JP6135318B2 - Concentrator - Google Patents

Description

  The present invention relates to a light collecting device that collects sunlight or the like.

  Conventionally, it has been considered to condense sunlight in order to generate power using solar energy. As a power generation method using such solar energy, a so-called heat receiving device is provided on the tower so as to use solar heat (thermal energy), and a plurality of mirrors as light collecting devices are provided around the tower. There is a tower type solar thermal power generation system (solar thermal power generation apparatus) (see, for example, Patent Document 1). This is not suitable for constructing a large-scale power generation facility by providing the light continuously at one point of the heat receiver provided on the tower by each mirror.

  For this reason, as a concentrating device, a plurality of reflecting portions that are long in the north-south direction are provided in parallel in the east-west direction, and a so-called linear Fresnel type that is provided with a heat receiving portion that is long in the north-south direction as an irradiated portion. Things are being considered. And the solar thermal power generation system (solar thermal power generation device) using this linear Fresnel type condensing device is considered. In the linear Fresnel type condensing device, each reflection part can be rotated around an axis extending in the north-south direction, and by appropriately rotating each reflection part according to the diurnal movement of the sun, from morning to evening Sunlight is condensed on the heat receiving part (irradiated part). In this condensing device, since the heat receiving part that is also long in the north-south direction is provided above the plurality of reflecting parts that are long in the north-south direction, the end on the north side and the end on the south side of the heat receiving part are provided. The plurality of reflecting portions can be extended outward. For this reason, in a solar thermal power generation system (solar thermal power generation apparatus) using a linear Fresnel type condensing device, it is possible to easily construct a large-scale power generation facility by providing a plurality of concentrating devices continuously in the north-south direction. it can.

  However, in the linear Fresnel type concentrator, even if each reflector is rotated according to the diurnal motion of the sun, the area that receives sunlight at each reflector due to changes in the altitude of the sun (each reflector There is a limit to suppressing the occurrence of so-called cosine loss that reduces the amount of light incident on the part. For this reason, in a linear Fresnel type condensing device, it is difficult to efficiently concentrate sunlight on the heat receiving part (irradiated part) in the morning and evening when the altitude of the sun is low, and solar energy (in this case, heat It is difficult to obtain energy.

  This invention is made | formed in view of said situation, and it aims at providing the condensing apparatus which can condense sunlight efficiently to an irradiated part.

  The light collecting device according to claim 1 is set by being irradiated with reflected light from each of the plurality of reflecting units that can rotate about the first rotation axis and can rotate about the second rotation axis, and the reflected light from each of the reflection units. An irradiated portion that is elongated in a direction in which the irradiated axis extends, and the first rotation axis includes a first position that includes the irradiated axis and the corresponding central position of the reflecting portion for each of the reflecting portions. A line segment orthogonal to the plane and passing through the center position, and the second rotation axis is included in the first plane and passes through the center position of the corresponding reflecting section for each reflecting section. Each of the reflecting portions is rotated about the first rotation axis and the second rotation axis so as to irradiate the irradiated portion with reflected light reflecting sunlight.

  In the condensing device according to the present invention, sunlight can be efficiently condensed on the irradiated portion.

It is explanatory drawing which shows the structure of the solar power generation device 30 provided with the condensing device 10 of this invention. It is explanatory drawing which shows the structure of the condensing device 10, (a) shows the mode seen from the zenith side in the zenith direction, (b) shows the mode seen from the south side in the north-south direction, and (c) shows the east-west direction. It shows a state seen from the east side. It is explanatory drawing for demonstrating the setting of the 1st rotating shaft 13 and the 2nd rotating shaft 14 in the reflection part 11, and the positional relationship with respect to the heat receiving part 12 of the 6th single reflection part 11 from the south side in the reflection line L1 is shown. It is shown in a schematic perspective view. It is explanatory drawing for demonstrating the setting of the 1st rotating shaft 13 and the 2nd rotating shaft 14 in each reflection part 11, From the 4th reflection part 11 from the south side to the 7th reflection part 11 from the south side in the reflection line L1 The positional relationship of the four reflecting portions 11 with respect to the heat receiving portion 12 is shown as seen from the east side in the east-west direction. It is explanatory drawing for demonstrating the 1st drive part 21 and the 2nd drive part 22 in the condensing apparatus 10, and respond | corresponds to the two reflection parts 11 (a total of four) which exist in the south side in the reflection line L1 and the reflection line L2. Only the first drive unit 21 and the second drive unit 22 are shown. It is explanatory drawing for demonstrating the structure for installation of each reflection part 11, (a) shows a mode that it looked in the direction where the 1st rotating shaft 13 extends, (b) shows the 2nd rotating shaft 14 extending. Shown from the direction. It is explanatory drawing for demonstrating the structure for installation of each reflection part 11 taking the 2nd reflection part 11 from the south side in each reflection line Ln as an example, (a) shows each part disassembled, ( b) shows the assembled state. It is explanatory drawing which expands and shows the reflection part 11 typically. It is explanatory drawing which shows a mode that the reflection part 11 was attached to the 2nd rotating shaft stage 25 used as a part of structure for installation of each reflection part 11, (a) is the 5th from the south side in each reflection line Ln. (B) shows the seventh reflection part 11 from the south side in each reflection line Ln, and (c) shows the second reflection part 11 from the south side in each reflection line Ln. It is explanatory drawing which shows the structure of the linear Fresnel type condensing device 50, (a) shows a mode seen from the zenith side in the zenith direction, (b) shows a mode seen from the south side in the north-south direction, (c ) Shows a view from the east side in the east-west direction. It is explanatory drawing for demonstrating cosine loss. It is explanatory drawing which shows the structure of the division | segmentation type | mold linear Fresnel type condensing device 60, (a) shows the mode seen from the zenith side in the zenith direction, (b) shows the mode seen from the south side in the north-south direction. (C) shows a state seen from the east side in the east-west direction. In the condensing device 60, it is explanatory drawing showing the positional relationship with respect to the heat receiving part 62 taking the one reflection part 61 as an example, and has shown as having formed the irradiation area | region IA on the heat receiving plane Pr. In the condensing device 60, it is explanatory drawing for demonstrating a mode that the irradiation area | region IA rotates on the heat receiving plane Pr (heat receiving part 62). In the condensing device 60, an explanation for explaining a state in which the on-axis point p1 and the on-axis point p2 move on the surface of the third plane P3 as the reflecting portion 61 rotates around the first rotation axis 64. FIG. In the condensing device 60, the reflecting portion 61 rotates around the first rotation axis 64, thereby reflecting the reflection axis upper point rp <b> 1 on the heat receiving plane Pr corresponding to the movement between the axial point p <b> 1 and the axial point p <b> 2. FIG. 15 is an explanatory view showing a schematic view of FIG. 15 viewed from the west side in the east-west direction in order to explain the movement of the on-axis point rp2 from the heat receiving axis line Ra, and (a) shows that the reflecting portion 61 is rotated. (B) shows a state in which the reflecting portion 61 has been rotated to the position indicated by the two-dot chain line in FIG. In the condensing device 60, it is explanatory drawing for demonstrating the example of the specific structure which enables each reflection part 61 to rotate to each rotating shaft, (a) is three in parallel in three east-west directions. Each of the reflecting portions 61 is shown as being supported by the support frame 66, (b) is a view of the reflecting portion 61 supported by the support frame 66 viewed from the east side in the east-west direction, and (c) the support frame 66 is shown. A mode that the supported reflection part 61 was seen from the north side of the north-south direction is shown. FIG. 10 is an explanatory diagram showing the setting of the first rotation shaft 64 and the second rotation shaft 65 in each reflection portion 61 of the light concentrator 60, and a reflection line 63 from the fourth reflection portion 61 from the south side to the seventh reflection from the south side. The positional relationship with respect to the heat receiving part 62 of the four reflecting parts 61 up to the part 61 is shown as seen from the east side in the east-west direction. FIG. 19 is an explanatory diagram showing a state in which each reflecting portion 61 is rotated around the second rotation shaft 65 from the state of FIG. In the condensing device 60, each reflecting portion 61 is rotated around the first rotation axis 64 from the state shown in FIG. 19, and the reflected light of sunlight toward the heat receiving portion 62 is applied to the heat receiving portion 62 (its heat receiving axis Ra). It is explanatory drawing which shows a mode that it advanced to the direction orthogonal with respect to it. In the condensing device 60, it is explanatory drawing which shows a mode that the irradiation area | region IA which the reflection part 61 in the state of FIG. 20 forms rotated with respect to the heat receiving part 62 (its heat receiving axis line Ra) with the perspective view similar to FIG. is there. In the condensing device 60, a reflecting portion 61 having a distance L of −20 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the Equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 60, a reflecting portion 61 having a distance L of -10 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of 0 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 60, a reflecting portion 61 having a distance L of 10 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 60, a reflecting portion 61 having a distance L of 20 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the Equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of −20 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the sun on the summer solstice at a point of 35 ° north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of -10 m with respect to the heat receiving portion 62 that rotates following the sun's diurnal motion on the day of the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of 0 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the sun on the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of 10 m with respect to the heat receiving portion 62 that rotates following the sun's diurnal motion on the day of the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of 20 m with respect to the heat receiving portion 62 that rotates following the diurnal motion of the sun on the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of −20 m with respect to the heat receiving portion 62 that rotates following the solar diurnal motion of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light collecting device 60, a reflecting portion 61 having a distance L of -10 m with respect to the heat receiving portion 62 that rotates following the solar diurnal motion of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 at the time of the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in (heat receiving plane Pr), a horizontal axis shows time (hour), and the left vertical axis shows rotation angle (°) at angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the concentrating device 60, a reflecting portion 61 having a distance L of 0 m with respect to the heat receiving portion 62 that rotates following the solar diurnal motion of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the concentrating device 60, a reflecting portion 61 having a distance L of 10 m with respect to the heat receiving portion 62 that rotates following the solar diurnal motion of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the light concentrator 60, a reflecting portion 61 having a distance L of 20 m with respect to the heat receiving portion 62 that rotates following the solar diurnal motion of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 62 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, an explanation for explaining a state in which the axial point p3 and the axial point p4 move on the surface of the first plane P1 by the reflection unit 11 rotating around the first rotation axis 13. FIG. In the condensing device 10, the reflection unit 11 rotates about the first rotation axis 13, so that even if the on-axis point p 3 and the on-axis point p 4 move, the reflection axis upper point rp 3 and the reflection axis on the heat receiving plane Pr are moved. In order to explain how the upper point rp4 does not move from the heat receiving axis Ra, FIG. 37 is an explanatory view showing a schematic view of FIG. 37 viewed from the west side in the east-west direction, and (a) the reflecting portion 11 is not rotated. (B) shows a state in which the reflecting portion 11 has been rotated to the position indicated by the two-dot chain line in FIG. It is explanatory drawing which shows the setting of the 1st rotating shaft 13 and the 2nd rotating shaft 14 in each reflection part 11 of the condensing apparatus 10, and is the 7th reflection part from the south side from the 4th reflection part 11 from the south side in the reflection line L1. The positional relationship with respect to the heat receiving part 12 of the four reflection parts 11 to 11 is shown in the state seen from the east side in the east-west direction. In the condensing device 10, each reflecting portion 11 is rotated around the first rotation shaft 13 from the state of FIG. FIG. In the condensing device 10, each reflecting unit 11 is rotated around the second rotation axis 14 from the state of FIG. 40 in order to advance the reflected light of sunlight in a direction orthogonal to the heat receiving unit 12 (its heat receiving axis Ra). FIG. In the condensing device 10, the reflecting portion 11 having a distance L of −20 m with respect to the heat receiving portion 12 that rotates following the diurnal solar motion at a point of 35 degrees north latitude and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −10 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 0 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the spring equinox sun at a point of 35 ° north latitude, and the heat receiving portion 12 (heat receiving portion) during the rotation. It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 10 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 20 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the spring equinox sun at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −20 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the sun on the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −10 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the summer solstice at a point of 35 ° north latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 0 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the sun on the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 10 m with respect to the heat receiving portion 12 that rotates following the diurnal movement of the sun on the day of the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 20 m with respect to the heat receiving portion 12 that rotates following the diurnal movement of the sun on the day of the summer solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −20 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the winter solstice at a point of 35 ° north latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L to −10 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the winter solstice at a point of 35 ° north latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 0 m with respect to the heat receiving portion 12 that rotates following the solar diurnal movement of the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 10 m with respect to the heat receiving portion 12 that rotates following the diurnal motion of the sun on the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 20 m with respect to the heat receiving portion 12 that rotates following the sun's diurnal movement on the winter solstice at a point of 35 degrees north latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −20 m with respect to the heat receiving portion 12 that rotates following the sun's diurnal motion on a spring equinox day at a point of 0 degree latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of −10 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the Equinox Day at a point of 0 degree latitude, and the heat receiving portion 12 ( It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in heat receiving plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows a rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 0 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the spring equinox at a point of 0 degree latitude, and the heat receiving portion 12 (heat receiving portion at the time of rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 10 m with respect to the heat receiving portion 12 that rotates following the sun's diurnal motion on the spring equinox day at a point of 0 degree latitude, and the heat receiving portion 12 (heat receiving portion at the time of rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. In the condensing device 10, the reflecting portion 11 having a distance L of 20 m with respect to the heat receiving portion 12 that rotates following the solar diurnal motion of the spring equinox at a point of 0 degree latitude, and the heat receiving portion 12 (heat receiving portion during the rotation) It is a graph which shows the mode of irradiation area IA (irradiation axis line Ia) in plane Pr), a horizontal axis shows time (hour), and a left vertical axis shows rotation angle (°) in angle θ1 and angle θ2. The right vertical axis is indicated by the rotation angle (°) at the angle θa. It is a table | surface which shows the result of having compared the efficiency in the condensing device 10 and the condensing device 60. FIG. It is explanatory drawing similar to FIG. 1 which shows the structure of the solar power generation device 40 provided with the condensing apparatus 10 'as another example of this invention. It is explanatory drawing similar to FIG. 3 which shows the structure of the condensing apparatus 10 '' as another example of this invention provided with reflection part 11 '. It is explanatory drawing which shows the structure of other heat receiving part 12 'in the condensing apparatus 10. FIG.

  Hereinafter, embodiments of a light collecting device, a solar thermal power generation device and a solar power generation device using the same according to the present invention will be described with reference to the drawings.

  A schematic configuration of a light collecting apparatus 10 as an embodiment of the light collecting apparatus according to the present invention will be described with reference to FIGS. 1 and 2. In the following description, directions (azimuths) in the east, west, north, and south directions on the installation plane are used. Yes. The installation plane is a flat surface orthogonal to the zenith direction (vertical direction). In FIG. 1, for easy understanding, it is assumed that the rotation about the first rotation shaft 13 (see FIG. 3, etc.) in each reflecting portion 11 is not performed. Further, in FIG. 1, for easy understanding, a configuration for supporting each reflecting portion 11 (second rotating shaft stage 25 and first rotating shaft stage 26 (support mechanism portion 29 (see FIG. 7 and the like))). Is omitted.

  In the present embodiment, the condensing device 10 is used to condense sunlight in the solar thermal power generation device 30, as shown in FIG. The condensing device 10 includes a plurality of reflecting portions 11 and a heat receiving portion 12 provided above them. Each of the reflecting portions 11 is formed of a mirror and is provided so as to reflect sunlight irradiating itself to the heat receiving portion 12. In the present embodiment, the reflecting portions 11 are equal to each other, and have a rectangular shape when viewed in the normal direction of the tangential plane at the center position C. Each of the reflecting portions 11 is formed of a mirror that is curved in one direction on the tangent plane and linear in another direction orthogonal to the one direction. That is, each reflecting portion 11 is formed by a mirror that is curved in the above-described one direction and flat in the other direction. In the present embodiment, the center position C is the center position on the reflecting surface of each reflecting portion 11 (see FIGS. 2 to 4). Each of the reflecting portions 11 is provided such that the height position from the installation plane at the center position C (position seen in the zenith direction (vertical direction)) is equal to each other. Hereinafter, the surface on which the center position C of each of the reflecting portions 11 exists is referred to as an installation reference surface Pb (see FIG. 4 and the like). The installation reference plane Pb is a flat surface orthogonal to the zenith direction (vertical direction), and is in a parallel positional relationship with a predetermined interval from the installation plane.

  Each reflecting portion 11 basically has a long direction (a direction in which a long side in a rectangle seen in the normal direction extends) along the installation reference plane Pb (see FIG. 4 and the like) along the east-west direction and a short direction. It is provided along the north-south direction (the direction in which the short side of the rectangle viewed in the normal direction extends). In the present embodiment, each reflecting portion 11 has a short direction as the above-described one direction, and is curved in one direction, that is, the short direction. For this reason, each reflection part 11 has the effect | action which condenses in a short direction (one direction), and has the effect | action which condenses in a long direction (other direction), when reflecting sunlight to the heat receiving part 12. Not done. Here, regarding the fact that the long (short) direction is aligned with the east-west (north-south) direction, the basic concept is that each reflecting portion 11 has a first rotating shaft 13 and a second rotating shaft 14 ( (See FIGS. 3 and 4 etc.) Since it can be rotated around, the orientation in the long (short) direction on the installation reference plane Pb (see FIG. 4 etc.) due to the change of the rotation angle in each rotation direction Is due to change. In addition, being able to rotate around the first rotating shaft 13 and the second rotating shaft 14 means being rotatable around the first rotating shaft 13 and the second rotating shaft 14.

  Each of the reflecting portions 11 is arranged in parallel on the installation reference plane Pb (see FIG. 4 and the like) so that the positions seen in the north-south direction of the center position C are equal to each other, and a plurality (four in the example of FIG. 1) are arranged in parallel. At the same time, the positions of the center position C viewed in the east-west direction are equal to each other, and a plurality (9 in the example of FIG. 1) are juxtaposed in the north-south direction. That is, in the light collecting apparatus 10, a plurality of (9 in the example of FIG. 1) reflecting portions 11 are arranged in the north-south direction over a certain range on the installation plane, and the reflecting line Ln ( n is a natural number excluding 0). Moreover, in the condensing device 10, the reflection line Ln is arrange | positioned in parallel by plural (4 in the example of FIG. 1) in the east-west direction. In this way, each reflection portion 11 is formed in a plurality of reflection lines Ln (four rows (n = 1 to 4 in the example of FIG. 1)) when viewed in the east-west direction, and a plurality of reflection lines Ln in the north-south direction. (9 in the example of FIG. 1) are provided in parallel. Note that the number of reflection portions 11, that is, the number of reflection lines Ln to be formed and the number of reflection portions 11 in each reflection line Ln may be set as appropriate, and is not limited to the present embodiment.

  In the reflecting portion 11, the first rotating shaft 13 and the second rotating shaft 14 (see FIG. 3 and FIG. 4) are individually set, and can be rotated around the respective rotating shafts. Yes. The first rotating shaft 13 is basically provided so that each reflecting portion 11 (its reflecting surface) can be directed to the east side and to the west side. Moreover, the 2nd rotating shaft 14 is basically provided so that each reflection part 11 (its reflective surface) can face the south side and can face the north side. The setting of the first rotating shaft 13 and the second rotating shaft 14 will be described in detail later. In each reflecting portion 11, changes in the altitude of the sun while corresponding to the diurnal motion of the sun by appropriately adjusting the rotation angle by the first rotating shaft 13 and the second rotating shaft 14 (see FIGS. 3 and 4, etc.). Corresponding to, the reflected light of the sunlight that irradiates itself (received by itself) is irradiated toward the heat receiving unit 12.

  The heat receiving portion 12 is provided at a predetermined height position above each reflecting portion 11 so as to straddle the reflection line Ln formed by each reflecting portion 11 in the east-west direction. In the present embodiment, the heat receiving portion 12 has a heat receiving axis Ra (heat receiving portion 12) above the center position C (the zenith direction) of the reflecting portion 11 that exists in the middle (the center seen in the north-south direction) of each reflection line Ln. The height dimension H from the installation reference plane Pb (center position C) viewed in the zenith direction is 14 m. The heat receiving unit 12 receives reflected sunlight from each reflecting unit 11 and collects heat. For this reason, the heat receiving part 12 functions as an irradiated part irradiated with the reflected light from each reflecting part 11, and the heat receiving axis Ra functions as an irradiated axis set to the heat receiving part 12 as the irradiated part. .

In this embodiment, the heat receiving portion 12 is a pipe (tube) formed of a material such as stainless steel, as shown in FIG. 1, and has a hollow tubular shape (cylindrical shape) with a circular cross section. The heat receiving part 12 is connected to a circulation pipe 31 described later at both ends viewed in the east-west direction. In this embodiment, the heat receiving unit 12 is filled with a heat medium (air, steam, etc.), and forms a path for circulating the heat medium in cooperation with the circulation pipes 31 connected to both ends. Yes. In the present embodiment, CO ₂ gas (carbon dioxide gas) is used as a heat medium that is filled and circulated in the heat receiving section 12. The heat receiving unit 12 is heated by being irradiated with the reflected light from each reflecting unit 11, and the heat medium is heated (transferred) to the heat medium to heat the heat medium and raise the temperature of the heat medium. . And the heat receiving part 12 circulates the heat medium which raised temperature by cooperation with the circulation pipe 31, and supplies it to the turbine 32 as a heat supply source mentioned later. That is, the heat receiving unit 12 uses solar energy by receiving heat when the reflected light from each reflecting unit 11 is irradiated.

  As shown in FIG. 2, each reflecting portion 11 that irradiates the heat receiving portion 12 with reflected light is reflected light in a direction orthogonal to the heat receiving axis Ra extending in the east-west direction with respect to the heat receiving portion 12 for each reflection line Ln. The angle is set so that the head is directed (advanced) (see FIG. 2B). The setting of this angle is mainly adjusted by rotation about a first rotation shaft 13 (see FIG. 3 and FIG. 4 etc.) which will be described later. For this reason, when each reflection part 11 provided in the same reflection line Ln sees in the east-west direction, the reflected light from the center position C will irradiate the same position in the heat receiving part 12, and reflection of a different reflection line Ln. It is supposed that the irradiation range in the heat receiving part 12 does not overlap with the part 11. Thereby, in the heat receiving part 12, the range irradiated for every reflective line Ln will be set seeing in the elongate direction (east-west direction).

  Further, the angles of the reflecting portions 11 provided on the same reflecting line Ln are set so that the reflected light is directed toward the heat receiving portion 12 existing above the central reflecting portion 11 when viewed in the north-south direction. (See FIG. 2 (c)). The setting of this angle is mainly adjusted by rotation about a second rotation shaft 14 (see FIG. 3 and FIG. 4 etc.) which will be described later. For this reason, each reflection part 11 provided in the same reflection line Ln is poured into a certain range (a range where the reflection line Ln (a plurality of reflection parts 11 constituting the reflection line Ln exists)) seen in the north-south direction. The reflected sunlight is collected (condensed) into the heat receiving unit 12. Thereby, in the heat receiving part 12, reflected light is condensed in the direction orthogonal to the heat receiving axis Ra from each reflecting part 11 of the corresponding reflecting line Ln for each range where each reflecting line Ln exists in the east-west direction. As a result, heat is collected for each reflection line Ln.

  Thus, the condensing device 10 condenses the plurality of reflection lines Ln (n = 1 to 4 in the illustrated example) with respect to the heat receiving unit 12 as the irradiated portion, in other words, the heat receiving unit 12. The linear Fresnel type solar condensing device in which the condensing part in FIG. 4 is divided in the longitudinal direction (east-west direction) corresponding to each reflection line Ln (the plurality of reflecting portions 11 existing there) It is. And in each reflection line Ln, the part to reflect is divided | segmented into the elongate direction by the some reflection part 11, and is comprised. For this reason, the condensing device 10 is a so-called split-type linear Fresnel type solar concentrating device. In this condensing device 10, the reflected light from each reflecting portion 11 is directed to the heat receiving portion 12 in a direction orthogonal to the heat receiving axis Ra, and therefore, a vertical heat receiving driving method (PL (Perpendental Lighting) method) It can be said that this is a linear Fresnel type solar concentrator.

  In addition, the parallel direction (the direction of the reflection line Ln and the direction in which the reflection lines Ln are parallel to each other) and the direction in which the heat receiving unit 12 (the heat receiving axis Ra) extends is the sun from each reflecting unit 11 as described above. As long as the reflected light of the light can be efficiently received by the heat receiving portion 12, the reflection line Ln is not completely aligned with the north-south direction, or the heat receiving portion 12 is not completely aligned with the east-west direction. Each direction may be different, and the direction (azimuth) relative to the east, west, south, and north on the installation plane (installation reference plane Pb) is not limited to the setting of the present embodiment.

  Further, the lengths of the reflection lines Ln on the north side and the south side with the heat receiving portion 12 installed in the east-west direction as a boundary are not necessarily the same. For example, in the northern hemisphere, since the solar trajectory passes on the south side with respect to the heat receiving part 12, when installing this condensing device 10 in the northern hemisphere, the length of the reflection line Ln is made longer to the north side than the south side, Condensing and collecting efficiency can be improved by taking a larger installation area of the reflecting portion 11 (mirror). On the other hand, when installing the condensing device 10 in the southern hemisphere, contrary to the case of installing it in the northern hemisphere, the length of the reflection line Ln is made longer to the south side than the north side, thereby increasing the light collecting and heat collecting efficiency. it can.

  Furthermore, although each reflection part 11 was made into the mutually equal space | interval and was paralleled in multiple numbers (in the example of FIG. 1 9 pieces) in the north-south direction, it is the distance L in the center position C with respect to the heat receiving part 12 seen in the north-south direction. The interval may be changed accordingly. As an example, in consideration of avoiding interference due to the shadow of the reflecting portions 11 adjacent in the north-south direction, the distance between the reflecting portions 11 is increased as the distance L from the heat receiving body 12 in the north-south direction increases. Can be mentioned. The interference due to the shadow means that sunlight incident on the reflection part 11 is blocked by the adjacent reflection part 11 and that reflected light from the reflection part 11 is blocked by the adjacent reflection part 11. In addition, although each reflective part 11 was made into the mutually equal space | interval and was parallelly arranged in the east-west direction (4 pieces in the example of FIG. 1), it is similarly in the center position C with respect to the heat receiving part 12 seen in the east-west direction. The interval may be changed according to the distance L. However, if the intervals seen in the east-west direction are equal to each other, the reflection lines Ln having the same structure in the east-west direction can be repeated.

  Next, in the land occupation area where the plurality of reflecting portions 11 are installed, the direction in which each reflection line Ln extends (the north-south direction in this embodiment) is longer than the direction in which the heat receiving portion 12 extends (the east-west direction in this embodiment). can do. As described above, each reflection line Ln is configured to irradiate (condensate) each reflecting portion 11 (mirror) by adjusting the angle with respect to the heat receiving portion 12 provided extending in the east-west direction as described above. By making the extending direction of the light beam relatively long, a condensing optical system with less light loss can be obtained compared to a linear Fresnel type solar light concentrating device (condensing device 50 (see FIG. 10)) described later. . The length in the direction in which each reflection line Ln extends is set so that the reflected light (sun image) from the farthest reflecting portion 11 does not protrude from the heat receiving portion 12 from the viewpoint of improving efficiency. It is desirable. For this reason, by constructing the reflecting section 11 group (mirror segment) extended in the direction in which each reflection line Ln extends (north-south direction), energy loss (loss) is reduced and heat is collected (condensed) efficiently. Heat energy (solar energy) can be obtained efficiently. Moreover, since the length dimension of the heat receiving part 12 can be set short compared with the linear Fresnel type sunlight condensing device (condensing device 50 (refer FIG. 10)) mentioned later, Heat loss due to heat dissipation can also be reduced. On the contrary, compared with the linear Fresnel type sunlight condensing device (condensing device 50 (see FIG. 10)) described later, a configuration in which the length in the direction in which each reflection line Ln extends is increased in the east-west direction. (Stretching in the east-west direction), it is possible to efficiently obtain larger thermal energy (solar energy).

  In addition, the height dimension H from the installation reference plane Pb in the heat receiving section 12 and the height position from the installation plane of each reflection section 11 (its central position C), that is, each reflection section 11 from the installation reference plane Pb (that The height dimension of the center position C) is, for example, that the sunlight can be efficiently received (irradiated) according to the surrounding environment in which the light collecting device 10 (solar thermal power generation device 30) is installed. It may be set as appropriate in consideration, and is not limited to the setting of the present embodiment.

  As shown in FIG. 1, the solar thermal power generation device 30 including the condensing device 10 includes a circulation pipe 31, a turbine 32, a generator 33, and an aggregator 34. The circulation pipe 31 is a pipe (tube), and a heat insulating member is provided on the outer surface. The circulation pipe 31 is connected to one end of the heat receiving unit 12 and is connected to the other end of the heat receiving unit 12 through the turbine 32 and the aggregator 34. For this reason, the circulation pipe 31 supplies the heat medium whose temperature has been raised in the heat receiving unit 12 to the turbine 32, and supplies the heat medium having passed through the turbine 32 and the aggregator 34 to the heat receiving unit 12 again. Circulate the medium.

  The turbine 32 applies the heat medium whose temperature has been raised in the heat receiving unit 12 to the moving blade row (not shown), thereby converting the kinetic energy (thermal energy) of the heat medium into the rotational motion of the moving blade row. . That is, the turbine 32 raises the temperature by using the thermal energy of sunlight in the light collecting device 10 (the heat receiving portion 12) instead of using a combustion gas of high temperature and high pressure by burning a fuel such as natural gas. The heat medium made is used. In the turbine 32, the rotating shaft of the moving blade row is connected to the rotating shaft of the generator 33.

  The generator 33 generates (generates) electric power when the rotating shaft is rotationally driven. In the present embodiment, the generator 33 generates (generates) electric power by using the rotational motion of the moving blade row (not shown) of the turbine 32 connected to the rotating shaft. For this reason, the solar thermal power generation device 30 is a power generation device that generates power using the thermal energy of sunlight among the solar power generation devices that generate electric power from solar energy. The generator 33 is provided with an output line 35. The output line 35 is connected to the power distribution path, and can output the power generated (generated) by the generator 33 to the power distribution path.

  The aggregator 34 cools the heat medium that drives the turbine 32 (rotates the blade row). The aggregator 34 supplies the cooled heat medium to the heat receiving unit 12. In the aggregator 34, the heat of the heat medium may be exchanged in the circulation pipe 31 other than the place where the turbine 32 and the heat receiving unit 12 are connected.

  Next, the setting of the 1st rotating shaft 13 and the 2nd rotating shaft 14 in each reflection part 11 of the condensing apparatus 10 is demonstrated. Here, in the condensing device 10, what is condensed in the heat receiving part 12 as the irradiated part is divided in the longitudinal direction (east-west direction) corresponding to each reflection line Ln (a plurality of reflection parts 11). And the setting position of each reflection part 11 seen in the north-south direction is mutually made equal by each reflection line Ln. For this reason, in the condensing device 10 of a present Example, the setting of the 1st rotating shaft 13 and the 2nd rotating shaft 14 in each reflection part 11 shall be mutually equal for every reflection line Ln. Therefore, hereinafter, the setting of the first rotation shaft 13 and the second rotation shaft 14 in each reflection portion 11 of the reflection line L1 will be described, and the first rotation shaft 13 and the first rotation shaft 13 in each reflection portion 11 of the other reflection line Ln. The setting of the two rotation shafts 14 is omitted.

  First, the 1st rotating shaft 13 is demonstrated using FIGS. 3-5. In FIG. 3, for easy understanding, the positional relationship of the sixth single reflection portion 11 from the south side with respect to the heat receiving portion 12 in the reflection line L1 is shown. Further, in FIG. 4, for easy understanding, the positional relationship of the four reflecting portions 11 from the fourth reflecting portion 11 from the south side to the seventh reflecting portion 11 from the south side with respect to the heat receiving portion 12 in the reflection line L1. Show. Further, in FIG. 4, for the sake of easy understanding, it is assumed that the rotation of each reflecting portion 11 around the first rotation shaft 13 is not performed. In FIG. 5, only the first drive unit 21 and the second drive unit 22 corresponding to the two reflection units 11 (total of four) existing on the south side in the reflection line L1 and the reflection line L2 are shown for easy understanding. ing.

  As shown in FIGS. 3 and 4, the first rotating shaft 13 is orthogonal to a plane including the heat receiving axis Ra of the heat receiving section 12 and the center position C in each reflecting section 11 (hereinafter referred to as the first plane P <b> 1). A line segment passing through the center position C is set. For this reason, the first rotating shaft 13 includes the center position C of each reflecting portion 11 and the heat receiving axis Ra (heat receiving portion 12) in each reflecting portion 11 provided in the reflecting line L1 (equal reflecting line Ln). It exists on the same plane (hereinafter referred to as a second plane P2 (a plane along the paper surface in FIG. 4)) that is orthogonal. Here, being on a surface means that it is a collection of points constituting the surface. In addition, since the first rotation shaft 13 is set as described above, the angle with respect to the installation reference plane Pb on the second plane P2 is reflected even in the reflection portion 11 provided in the same reflection line L1. Each part 11 is different (see FIG. 4 and the like). Thereby, as shown in FIG. 4, each first rotating shaft 13 is provided along a plane orthogonal to the heat receiving axis Ra (east-west direction), that is, along the second plane P <b> 2 (in the direction along the paper surface). The angles with respect to the installation reference plane Pb are different from each other on the second plane P2.

Specifically, since each reflection part 11 is provided with the center position C existing on the installation reference plane Pb, the interval with respect to the heat reception part 12 at the center position C viewed in the zenith direction is all heat reception. It becomes the height dimension H (14 m in this embodiment) from the installation reference plane Pb of the portion 12. And in each reflection part 11, the distance L in the center position C with respect to the heat receiving part 12 seen in the north-south direction will change according to the position seen in the north-south direction in the reflection line L1. Here, on the second plane P2 (see FIG. 3), a line segment connecting the heat receiving axis Ra of the heat receiving part 12 and the center position C of each reflecting part 11 is defined as a reflected light path Rp. This reflected light path Rp is directed from the center position C of the reflecting portion 11 to the heat receiving axis Ra of the heat receiving portion 12 among the reflected light going from each reflecting portion 11 to the heat receiving portion 12, and corresponds to each reflecting portion 11. This is where the first plane P1 and the second plane P2 intersect. Since each reflected light path Rp exists on the first plane P1, it is orthogonal to the first rotation axis 13 passing through the center position C of the corresponding reflecting portion 11. Then, the inclination angle α formed by the reflected light path Rp and the installation reference plane Pb is tan ⁻¹ (H / L). The inclination angle α is obtained by subtracting the inclination angle β formed by the first rotation shaft 13 and the installation reference plane Pb from the inclination angle (90 degrees) formed by the first rotation shaft 13 and the reflected light path Rp. For this reason, the 1st rotating shaft 13 can show inclination-angle (beta) with respect to the installation reference plane Pb by (90-tan < ^-1 > (H / L)). From this, in the 1st rotating shaft 13, the inclination angle (beta) with respect to the installation reference plane Pb (installation plane made parallel there) and the direction with respect to the heat receiving part 12 by the positional relationship of the reflection part 11 with respect to the heat receiving part 12, Is determined. For this reason, the 1st rotating shaft 13 is set for every reflection part 11 by the positional relationship of each reflection part 11 with respect to the heat receiving part 12. FIG. Each first rotating shaft 13 is set in a tangential direction with respect to a circle passing through the center position C of the corresponding reflecting portion 11 with the heat receiving axis Ra as the center. Each of the first rotation shafts 13 does not change the absolute positional relationship with respect to the heat receiving unit 12 regardless of the change in the rotation posture of the reflection unit 11 with the second rotation shaft 14 as the rotation center.

  As shown in FIG. 3, the second rotation shaft 14 is set to a line segment that is on the first plane P <b> 1 (included in the first plane P <b> 1) and that passes through the center position C of the corresponding reflector 11. For this reason, in each reflection part 11, both the 1st rotating shaft 13 and the 2nd rotating shaft 14 are made into the line segment which passes along the center position C as an equal rotation center. Further, in each reflecting portion 11, the first rotation axis 13 is orthogonal to the reflected light path Rp and orthogonal to the second rotation axis 14. Here, it is necessary that the second rotating shaft 14 does not coincide with the reflected light path Rp. In the present embodiment, the second rotation shaft 14 rotates on the first plane P1 with the first rotation shaft 13 as the rotation center as the first rotation shaft 13 of the reflecting portion 11 rotates about the rotation center. It is supposed to be. That is, in the present embodiment, the second rotating shaft 14 is set with the positional relationship fixed to the reflecting portion 11 so as to be orthogonal to the first rotating shaft 13. In the present embodiment, the second rotating shaft 14 is set so as to coincide with the longitudinal direction of the reflecting portion 11. For this reason, the second rotating shaft 14 is in a state where the normal direction of the tangent plane at the center position C is coincident with the reflected light path Rp (a state in which the heat receiving unit 12 is directly opposed (hereinafter also referred to as an initial state). If it says)), it becomes a line segment parallel to the heat receiving axis Ra of the heat receiving portion 12, and extends along the east-west direction. Therefore, in the initial state, the second rotating shaft 14 is parallel to the north-south direction while extending in parallel with the heat receiving axis Ra on the installation reference plane Pb in each reflecting portion 11 provided on the same reflecting line L1. (See FIG. 4). In addition, since the second rotation shaft 14 is configured such that the reflection lines Ln are arranged in parallel in the east-west direction as described above, in the initial state, the second rotation shaft 14 is provided at an equal position when viewed in the north-south direction for each reflection line Ln. Each reflecting portion 11 is present on the same straight line extending parallel to the heat receiving axis Ra.

  Here, the east-west direction is the x-axis direction (east side is the positive side), the north-south direction is the y-axis direction (north side is the positive side), and the zenith direction is the z-axis direction (the zenith side is the positive side). Then, the first rotating shaft 13 is fixed as a vector (0, -l, h) when expressed by a vector starting from the end on the south side. The l and h are variables determined by the positional relationship with respect to the heat receiving unit 12 (heat receiving axis Ra). In the initial state, the second rotating shaft 14 is represented by a vector (1, 0, 0) starting from the west end of the second rotating shaft 14, and the first rotating shaft 13 is the center of rotation. As appropriate. In the initial state, the normal passing through the center position C of the reflecting portion 11 (the normal of the tangent plane of the reflecting portion 11 at the center position C) is reflected from the reflecting portion 11 toward the heat receiving portion 12 (heat receiving axis Ra). It matches the light vector (0, h, l). Then, the tangent plane is rotated by an angle θ1 (see FIGS. 42 to 61), which will be described later, based on the normal vector (0, h, l) by appropriately rotating the reflecting portion 11 around the first rotation axis 13. ) And appropriately rotated around the second rotation axis 14 to rotate by an angle θ2 (see FIGS. 42 to 61) described later with reference to the normal vector rotated by the angle θ1.

  In the condensing device 10, each reflecting portion 11 can be rotated about the first rotation shaft 13 set for itself, and the second rotation shaft 14 set for itself is the rotation center. (Hereinafter, also referred to as rotation around the rotation axis). Since the first rotating shaft 13 is orthogonal to the direction parallel to the heat receiving portion 12 (its heat receiving axis Ra) extending in the east-west direction, by rotating the corresponding reflecting portion 11, It is possible to cope with changes in the position of the sun in the east-west direction due to circumferential motion. Moreover, since the 2nd rotating shaft 14 is a line segment which passes along the center position C of the corresponding reflection part 11 on the 1st plane P1 (what is contained in the 1st plane P1), it rotates the corresponding reflection part 11. By doing so, it is possible to cope mainly with changes in altitude of the sun (position in the north-south direction). Thereby, in the condensing device 10, by appropriately rotating each reflecting portion 11 around the first rotating shaft 13 and the second rotating shaft 14, the light collecting device 10 is always orthogonal to the heat receiving axis Ra corresponding to the diurnal motion of the sun. The light can be condensed to the heat receiving unit 12 for each reflection line Ln in the direction.

  In the condensing device 10, as shown in FIG. 5, the first driving unit 21 and the second driving unit 22 are provided in each reflection unit 11. The first drive unit 21 drives the reflection unit 11 to rotate about the first rotation axis 13. The second drive unit 22 drives the reflection unit 11 to rotate about the second rotation axis 14. The first drive units 21 and the second drive units 22 are connected to the control unit 23. The control unit 23 controls the operation of each first drive unit 21 and each second drive unit 22 based on a built-in program. A solar position detector 24 is connected to the controller 23. The solar position detection unit 24 is a sensor that detects the position of the sun, and can be configured by using, for example, a four-split optical sensor. Moreover, in the control part 23, it is possible to calculate the position of the sun on calculation by a built-in program. The control unit 23 basically controls each reflection unit 11 via the first drive unit 21 and the second drive unit 22 based on the detection result from the solar position detection unit 24 and the first rotation shaft 13 and the second rotation unit 13. Rotate appropriately around the second rotation axis 14. And when the favorable detection result is not obtained from the sun position detection part 24, for example at the time of cloudy weather, the control part 23 is based on the position of the calculation sun, and each 1st drive part 21 and each 2nd drive Each reflecting portion 11 is appropriately rotated around the first rotating shaft 13 and the second rotating shaft 14 via the portion 22. For this reason, in the condensing device 10, it can always condense to the heat receiving part 12 for every reflection line Ln in the direction orthogonal to the heat receiving axis Ra in accordance with the diurnal movement of the sun regardless of the change in the weather. it can.

  Next, the structure for installing each reflection part 11 in the condensing apparatus 10 of a present Example is demonstrated using FIGS. 6-9. In this embodiment, as shown in FIGS. 6, 7, and 9, each reflecting portion 11 is provided by being supported by a corresponding second rotating shaft stage 25 and first rotating shaft stage 26 (support mechanism portion 29). It is done. The second rotating shaft stage 25 includes a supported arm portion 25a and a support arm portion 25b. The supported arm portion 25a constitutes a location (supported location) that is supported by the first rotary shaft stage 26 (see FIG. 7) in the second rotary shaft stage 25. The supported arm portion 25a has a long rod shape, and both end portions thereof are bent in the orthogonal direction. The supported arm portion 25a is sized so that the reflecting portion 11 can be received in the short direction between both end portions bent in the orthogonal direction (see FIG. 6B and the like). In the supported arm portion 25a, a pair of support protrusions 25c are provided at both ends curved in the orthogonal direction. Both the support projections 25c are provided so as to protrude outward from the respective end portions of the supported arm portion 25a, and their axis lines are located on the same straight line. Both the support protrusions 25c (its axis) are parallel to the direction in which the long supported arm portion 25a extends.

  The support arm portion 25 b constitutes a location (support location) that supports the reflecting portion 11 in the second rotating shaft stage 25. The support arm portion 25b is provided orthogonal to the supported arm portion 25a, has a long bar shape, and both end portions thereof are bent in the orthogonal direction. The support arm portion 25b is sized so that the reflecting portion 11 can be received in the longitudinal direction between both end portions bent in the orthogonal direction (see FIG. 6A and the like). In the support arm portion 25b, a pair of support holes 25d are provided at both ends curved in the orthogonal direction. Both the support holes 25d are provided so as to penetrate through both end portions of the support arm portion 25b, and their axis lines are located on the same straight line. Both the support holes 25d (the axes thereof) are parallel to the direction in which the long support arm portion 25b extends, and are in a positional relationship orthogonal to the axes of the pair of support protrusions 25c.

  In the present embodiment, the reflecting portion 11 is provided supported by the second rotating shaft stage 25. As shown in FIG. 8, as described above, the reflecting portion 11 has a rectangular shape when viewed in the normal direction of the tangential plane at the center position C, is curved in the short direction, and is a flat mirror in the long direction. Has been. As described above, the reflecting portion 11 is basically provided with the long direction along the east-west direction and the short direction along the north-south direction. In the reflection part 11, supported protrusions 11 a are provided in pairs at both ends viewed in the longitudinal direction. Each of the supported protrusions 11a is positioned on a straight line whose axis extends in the longitudinal direction, that is, the east-west direction while passing through the center position C. Both the supported projections 11a can be rotatably inserted into a pair of support holes 25d provided at both ends of the support arm portion 25b of the second rotating shaft stage 25. For this reason, the reflection part 11 is supported by the 2nd rotating shaft stage 25 so that it can rotate between the both ends of the support arm part 25b by inserting a pair of supported protrusion 11a in a pair of support hole 25d. (Refer FIG. 7 (a) etc.). In this state, the center position C of the reflecting portion 11 is such that the axis of both support protrusions 25c of the supported arm portion 25a (both support holes 26e to be inserted later) and both support holes 25d of the support arm portion 25b ( It is located at the intersection of the axis of both supported projections 11a) inserted therein. The second rotating shaft stage 25 on which the reflecting portion 11 is supported is supported and installed on the first rotating shaft stage 26 (see FIG. 7).

  As shown in FIG. 7, the first rotating shaft stage 26 has a support arm portion 26a, an installation base portion 26b, and a connecting leg portion 26c. The support arm portion 26a has a pair of support wall portions 26d that are U-shaped in cross section and constitute a portion that supports the second rotary shaft stage 25 and that are opposed to each other with a gap therebetween. The support arm portion 26a can receive the second rotary shaft stage 25 in the short direction between both the support wall portions 26d, that is, can receive both ends of the supported arm portion 25a curved in the orthogonal direction. It is a size. Each support wall portion 26d is provided with a support hole 26e. Both the support holes 26e are provided so as to penetrate the support wall portion 26d, and their axis lines are located on the same straight line. Both the support holes 26e (its axis) can rotatably receive a pair of support protrusions 25c provided at both ends of the supported arm portion 25a of the second rotary shaft stage 25.

  The installation base portion 26b is provided for installing the first rotation axis stage 26 on an installation plane on which the light collecting apparatus 10 (each reflection portion 11 thereof) is installed. The connecting leg portion 26c is positioned such that the center position C of each reflecting portion 11 supported via the support arm portion 26a and the second rotary shaft stage 25 is located on the above-described installation reference plane Pb (see FIG. 4 and the like). The installation base portion 26b and the support arm portion 26a are connected to each other. In the present embodiment, the connection leg portion 26c is connected at its upper end to the support arm portion 26a via the rotation mechanism portion 26f. In the rotation mechanism portion 26f, the support arm portion 26a rotates with respect to the connection leg portion 26c with a rotation axis 26g perpendicular to a line segment parallel to the axis line of the support holes 26e (the short side axis line 28 described later) as a rotation center. It is possible to do. The rotation mechanism unit 26f is connected to the control unit 23 (see FIG. 5), and appropriately rotates the support arm unit 26a with respect to the connection leg 26c under the control of the control unit 23.

  As shown in FIG. 7A, the reflecting portion 11 is inserted by inserting a pair of supported projections 11a into support holes 25d that make a pair at both ends of the support arm portion 25b of the second rotating shaft stage 25 (arrows). a), and supported by the second rotary shaft stage 25 so as to be rotatable between both end portions of the support arm portion 25b. For this reason, with respect to the second rotating shaft stage 25, the reflecting portion 11 has the axis of both supported protrusions 11a (supporting holes 25d) positioned on a straight line extending in the longitudinal direction while passing through the center position C as the rotation center. It is possible to rotate. The second rotary shaft stage 25 pairs a pair of support protrusions 25c provided at both ends of the supported arm portion 25a with both support wall portions 26d of the support arm portion 26a of the first rotary shaft stage 26. By being inserted into the support hole 26e (see arrow a2), the first rotary shaft stage 26 is rotatably supported between the support wall portions 26d. For this reason, the second rotary shaft stage 25 can rotate with respect to the first rotary shaft stage 26 about the axis of both the support protrusions 25c (support holes 26e) as the center of rotation. The first rotation axis stage 26 is installed at a position corresponding to the reflection unit 11 supported via the second rotation axis stage 25 on the installation plane on which the light collecting device 10 is provided.

  Thereby, as shown in FIG.7 (b), the reflection part 11 is the two support protrusions 25c (support hole) by the 1st rotating shaft stage 26 via the 2nd rotating shaft stage 25 in arbitrary positions in an installation plane. 26e) (a short side axis 28, which will be described later) is provided so as to be able to rotate. In addition, the reflecting portion 11 is disposed at an arbitrary position on the installation plane via both the first rotary shaft stage 26 and the two rotary shaft stages 25 that are positioned on a straight line extending in the longitudinal direction while passing through the center position C. The support protrusion 11a (support hole 25d) is provided so as to be rotatable about the axis of rotation. From this, the axis of both supported protrusions 11a (support hole 25d) functions as the long-side axis 27 as the second axis. Here, as described above, the axes of the support protrusions 25c (support holes 26e) are in a positional relationship orthogonal to the axes (long-side axis 27) of the pair of support holes 25d, and the pair of support holes 25d The two supported protrusions 11a whose axis is the long side axis 27 are rotatably supported. For this reason, the axis of both support protrusions 25c (support holes 26e) includes the short direction of the reflecting portion 11 regardless of the rotation about the long side axis 27 of the reflecting portion 11 with respect to the second rotating shaft stage 25 as the rotation center. It is assumed that it passes through the center position C on the surface. From this, the axis of both support protrusions 25c (support hole 26e) functions as the short-side axis 28 as the first axis.

  The reflection unit 11 is supported by the second rotation axis stage 25 so as to be able to rotate around the long side axis 27 (second axis) as the rotation center. The second rotation axis stage 25 has the first rotation axis. The stage 26 is supported by being able to rotate around the short side axis 28 (first axis) as the center of rotation. For this reason, the reflecting section 11 can be rotated about the short side axis 28 by the second rotation axis stage 25 and the first rotation axis stage 26, and the short side axis 28 is the rotation center. Regardless of the rotation, the long axis 27 can be rotated around the center of rotation and provided at an arbitrary position on the installation plane. In addition, the order of this attachment is not limited to a present Example.

  In the light collecting apparatus 10, each reflecting portion 11 is supported by the second rotating shaft stage 25 and the first rotating shaft stage 26 and is provided at an arbitrary position on the installation plane according to the position with respect to the heat receiving portion 12. Then, the short axis 28, that is, the axis (first axis) of both support protrusions 25c (both support holes 26e) is set to the first rotating shaft 13 set according to the position of the reflecting part 11 to be supported with respect to the heat receiving part 12. Match. The inclination of the short axis 28 is determined by the direction in which the support holes 26e of the support wall portions 26d of the support arm 26a of the first rotary shaft stage 26 make a pair. Further, the position of the short-side axis 28 on the installation plane is determined by the position at which the installation base 26b, that is, the first rotation axis stage 26 is installed on the installation plane. For this reason, in the condensing device 10, the direction in which the support holes 26 e of the support arm portions 26 a of the first rotating shaft stage 26 make a pair (the short-side axis 28 (first axis)) of the reflecting portion 11 with respect to the heat receiving portion 12. The first rotation axis stage 26 is installed so as to coincide with the first rotation axis 13 set according to the position. In the present embodiment, the rotation shaft 26g of the rotation mechanism portion 26f of the first rotation shaft stage 26 is parallel to the heat receiving portion 12 (the heat receiving axis Ra), and the first rotation shaft stage 26 is provided at the installation position of the reflecting portion 11. . Then, by rotating the support arm portion 26a with respect to the connection leg portion 26c around the rotation shaft 26g by the rotation mechanism portion 26f of the first rotation shaft stage 26, the short side axis 28 (the support hole 26e is paired). Direction) is orthogonal to the first plane P1 with reference to the reflecting portion 11 to be supported. By this adjustment, the short-side axis 28 (first axis) coincides with the first rotation shaft 13 set according to the position of the reflection unit 11 with respect to the heat receiving unit 12. The adjustment of the short side axis 28, that is, the adjustment of the rotation posture of the support arm portion 26a with respect to the connection leg portion 26c is performed under the control of the control unit 23 (see FIG. 5).

  Then, the first rotary shaft stage 26 aligns the short side axis 28 (the direction in which the support holes 26 e make a pair) with the first rotary shaft 13 set on the reflecting portion 11 to be supported, and the first rotary shaft 13. The second rotary shaft stage 25, that is, the reflecting portion 11 is supported so as to be rotatable about the (short-side axis 28). As described above, the second rotary shaft stage 25 has the long axis 27, that is, the axis of the two supported protrusions 11a (support holes 25d) positioned on the straight line extending in the long direction while passing through the center position C. The reflection part 11 is supported by allowing the reflection part 11 to rotate about the biaxial line). In the reflecting portion 11, the center position C is configured such that the center position C is the axis of the both support protrusions 25 c (both support holes 26 e) of the supported arm portion 25 a (the short side axis 28 (first axis)) and the support arm portion. It is located at the intersection of the axis (long-side axis 27 (second axis)) of both support holes 25d (both supported projections 11a) of 25b. The long side axis 27 (second axis) is in a positional relationship orthogonal to the short side axis 28 (first axis). Therefore, in the first rotating shaft stage 26, when the second rotating shaft stage 25 is rotated about the short side axis 28 (first rotating shaft 13 (first axis)) as the rotation center, the second rotating shaft stage 25 is rotated. The long-side axis 27 (second axis) set to 2 is rotated about the center position C on the plane orthogonal to the short-side axis 28 (first rotation axis 13). For this reason, the long side axis 27 (second axis) is set to the corresponding reflector 11 regardless of the rotation of the second rotary axis stage 25 about the first rotation axis 13 (short side axis 28). The first rotation axis 13 is included in the first plane P1 and is a line segment passing through the center position C of the reflecting portion 11. Thereby, in the first rotating shaft stage 26, as described above, when the direction in which the short-side axis 28 (the supporting hole 26e (first axis) of the supporting arm portion 26a) is paired with the first rotating shaft 13, The axis (second axis) of the long-side axis 27 (both supported protrusions 11a (support holes 25d)) satisfies the condition of the second rotating shaft 14. Therefore, in the light collecting apparatus 10, the first rotary shaft stage 26 is installed by making the short axis 28 (first axis) coincide with the first rotary shaft 13 set according to the position of the reflecting portion 11 with respect to the heat receiving portion 12. By doing so, the long-side axis 27 (second axis) functions as the second rotation shaft 14 set according to the position of the reflecting portion 11.

  From this, in the condensing device 10, each reflective part 11 installed in an installation plane is set to the 1st rotating shaft 13 set according to the position of the reflective part 11 with respect to the heat receiving part 12 as mentioned above, and the short side axis line 28 is set. The first rotary shaft stage 26 installed with the (first axis) aligned is supported via the second rotary shaft stage 25. Thereby, each reflecting portion 11 is installed on the installation plane so as to be rotatable around the first rotation axis 13 by allowing the second rotation axis stage 25 to be rotated around the short side axis 28 (first axis). The Each of the reflecting portions 11 is supported by the second rotation axis stage 25 so as to be rotatable around the long side axis 27 (second axis), and the long side axis 27 (second axis) is the second rotation axis. 14 is satisfied. That is, each reflecting portion 11 is based on the first rotating shaft 13 set in the corresponding reflecting portion 11 regardless of the rotation posture around the first rotating shaft 13 (short-side axis 28 (first axis)). It is included in the first plane P1, and is rotatable about the second rotation axis 14 (long-side axis 27 (second axis)) passing through the center position C of the reflecting portion 11.

  FIG. 9 shows an example in which each reflecting portion 11 provided in this way is supported by the second rotating shaft stage 25 and is in an initial state. In FIG. 9, the first rotating shaft 13 (short side axis 28 (first axis)) and the second rotating shaft 14 (long side axis 27 (on the installation reference plane Pb (see FIG. 4 etc.)). In order to facilitate understanding of the positional relationship of the second axis))), the first rotation axis stage 26 is omitted. As shown in FIG. 9A, the fifth reflecting portion 11 (see FIG. 1) from the south side in each reflection line Ln has the first rotating shaft 13 (the short side axis 28 (first axis)) in the north-south direction. While extending, the second rotating shaft 14 (long-side axis 27 (second axis)) extends in the east-west direction and is provided on the installation plane (installation reference plane Pb (see FIG. 4 and the like)). In addition, as shown in FIG. 9B, the seventh reflecting portion 11 (see FIG. 1) from the south side in each reflection line Ln is inclined with the north side upward, as shown in FIG. 9B. 1 axis)) extends in the north-south direction, and the second rotating shaft 14 (long-side axis 27 (second axis)) extends in the east-west direction to the installation plane (installation reference plane Pb (see FIG. 4 etc.)). Provided. Further, in each reflection line Ln, the second reflecting portion 11 (see FIG. 1) from the south side tilts the south side upward, as shown in FIG. 1 axis)) extends in the north-south direction, and the second rotating shaft 14 (long-side axis 27 (second axis)) extends in the east-west direction to the installation plane (installation reference plane Pb (see FIG. 4 etc.)). Provided. As described above, in the light collecting apparatus 10, setting is performed by installing each reflecting unit 11 on the installation plane via the first rotating shaft stage 26 and the second rotating shaft stage 25 adjusted according to the position with respect to the heat receiving unit 12. Each reflecting portion 11 is provided so as to be rotatable around the first rotation shaft 13 and the second rotation shaft 14. From this, the 1st rotating shaft stage 26 and the 2nd rotating shaft stage 25 comprise the support mechanism part 29 which supports each reflection part 11 separately.

  Here, although the illustration of the first drive unit 21 (see FIG. 5) described above is omitted, the second rotary shaft stage 25 is moved from the first rotary shaft stage 26 to the short side axis 28 (both the support arm portions 26a). The support hole 26e and the support protrusions 25c are rotated around the axis (first axis), that is, around the first rotation shaft 13. The second drive unit 22 (see FIG. 5) described above is not illustrated, but the reflection unit 11 is connected to the long rotation axis 27 (both support holes 25d of the support arm unit 25b) with respect to the second rotary shaft stage 25. Further, it is driven to rotate around the axis (second axis) of the supported protrusions 11a, that is, around the second rotating shaft 14.

  In the present embodiment, the first rotating shaft stage 26 is provided with the rotation mechanism portion 26f so that the support arm portion 26a can rotate with respect to the connection leg portion 26c. However, as described above. If the second rotary axis stage 25 is supported by aligning the short axis 28 with the first rotary axis 13 set according to the position of the reflecting part 11 with respect to the heat receiving part 12, it is directly supported by the connecting leg part 26c. The arm part 26a may be connected, may have other configurations, and is not limited to the configuration of the above-described embodiment.

  In this embodiment, the adjustment of the short side axis 28 in the support mechanism 29, that is, the adjustment of the rotation posture of the support arm 26a with respect to the connection leg 26c is performed under the control of the control unit 23 (see FIG. 5). Yes. However, this adjustment is set using an external device or the like when the first rotary shaft stage 26 is installed, and the support arm 26a is fixed to the connection leg 26c in the set state. Alternatively, other methods may be used and the present invention is not limited to the configuration of the above-described embodiment.

  Next, the technical problem in the condensing device (50, 60) that condenses sunlight on the irradiated portion (heat receiving portion) in the same manner as the condensing device 10 will be described with reference to FIGS. As shown in FIG. 10, the light collecting device 50 is a so-called linear Fresnel type that includes a plurality of reflecting portions 51 that are long in the north-south direction, and a heat receiving portion 52 that is long in the north-south direction. A solar concentrator. The plurality of reflecting portions 51 are provided in parallel in the east-west direction. Each reflecting portion 51 is provided with a rotating shaft 53 that is driven to rotate by a driving portion (not shown) extending in the north-south direction. Each of the reflecting portions 51 is rotatable around the rotation shaft 53. The heat receiving part 52 provided above is configured similarly to the heat receiving part 12 of the light collecting device 10 described above.

  In this linear Fresnel type condensing device 50, each reflecting portion 51 is appropriately rotated to direct sunlight reflected toward the heat receiving portion 52 (see FIG. 10B), thereby collecting the heat receiving portion 52. Can be light. For this reason, sunlight can be condensed on the heat receiving part 52 from morning to evening by appropriately rotating each reflecting part 51 according to the diurnal motion of the sun. At this time, in the light collecting device 50, since each reflection part 51 extends in the north-south direction and the heat receiving part 52 extends in the north-south direction, even if the solar altitude changes, each reflection part 51 Although the angle toward the heat receiving unit 52 and the incident position on the heat receiving unit 52 change, the reflected light can be directed to the heat receiving unit 52 (see FIG. 10C).

  Here, in the linear Fresnel type condensing device 50, there is a limit in suppressing the occurrence of cosine loss. As shown in FIG. 11, the cosine loss is an area (incident light flux) that can be received by the reflecting portion 51 (see the reflecting portion 51 indicated by a two-dot chain line) in a state of facing the sunlight incident direction. 11), the area (amount of incident light beam) that can be received by the appropriately rotated reflecting portion 51 (see the reflecting portion 51 indicated by the solid line) is reduced (dots in sunlight in FIG. 11). (Refer to the section marked with). For this reason, the cosine loss can be suppressed by reducing the angle formed by the direction in which sunlight is incident and the normal direction of the reflecting unit 51, and the sunlight is efficiently collected on the heat receiving unit 52. be able to. However, in the linear Fresnel type light collecting device 50, as shown in FIG. 10, a plurality of reflecting portions 51 are provided on the east side and the west side across the heat receiving portion 52 with respect to the heat receiving portion 52 extending in the north-south direction. Therefore, the mode for responding to the position of the sun is different between each reflection part 51 on the east side and each reflection part 51 on the west side with the central position (heat receiving part 52) seen in the east-west direction as a boundary. End up. Specifically, for example, as illustrated in FIG. 10B, when the sun is present on the east side, the normal direction and the direction in which sunlight is incident on each of the reflecting portions 51 present on the west side with respect to the heat receiving portion 52. It is possible to direct the reflected light from them toward the heat receiving portion 52 while reducing the angle between the two. However, in each reflection part 51 which exists in the east side with respect to the heat receiving part 52, the reflected light from them is directed to the heat receiving part 52 while reducing the angle formed by the normal direction and the direction in which sunlight enters. It is difficult. This is the same even if the sun exists on the west side only by reversing the east side and the west side. For this reason, in the linear Fresnel type condensing device 50, the cosine loss becomes large in about half of all the reflection parts 51. This has a large influence especially in the morning and evening when the altitude of the sun is low, and it becomes difficult to efficiently concentrate the sunlight on the heat receiving portion 52 in the morning and evening.

  Further, in the linear Fresnel type condensing device 50 having the above-described configuration, although not shown, a plurality of long reflecting portions 51 and a heat receiving portion 52 provided above the reflecting portions 51 are provided along the east-west direction. Can be considered. However, since the change in the incident angle of sunlight with the diurnal movement of the sun is larger than the change in the altitude of the sun with the change in the season, compared to providing in the north-south direction as described above, Movement of the condensing position in the heat receiving part 52 (the surface) will become large. That is, in the morning and evening time zones, the incident angle of sunlight on each reflecting portion 51 with respect to the zenith direction becomes large, so that the reflected light from each reflecting portion 51 reaches the heat receiving portion 52. The distance of will increase. Such an increase in the distance assumes that the sun image is formed on the heat receiving unit 62 by the reflected light from the reflecting unit 61 and causes an increase in the size of the sun image. It becomes difficult to condense on the part 52. For these reasons, in the linear Fresnel type light collecting device 50, the fluctuation of the solar energy (thermal energy) obtained increases between the time in the south and the morning and evening when the solar altitude is low.

  For this reason, the condensing device 60 as shown in FIG. 12 can be considered. The condensing device 60 includes a plurality of reflecting portions 61 that are long in the east-west direction and a heat receiving portion 62 that is long in the east-west direction. A plurality of the reflecting portions 61 are juxtaposed in the north-south direction (in the example of FIG. 12, nine (in the middle, below the heat receiving portion 62)) are arranged in parallel to form a long reflection line 63 in the north-south direction. A plurality (four in the example of FIG. 12) of the reflection lines 63 are arranged in parallel in the east-west direction. For this reason, the concentrating device 60 is a so-called split-type linear Fresnel type solar concentrating device in which each reflection line 63 is divided by a plurality of reflecting portions 61 in the north-south direction (longitudinal direction). is there. In each reflection part 61 of each reflection line 63, a first rotation shaft 64 that is rotationally driven by a first drive part (not shown) extends in the short direction of the reflection part 61 while passing through the center position C, and is in the north-south direction. It is set along the plane including. And in each reflection part 61, the 2nd rotating shaft 65 rotationally driven by the 2nd drive part which abbreviate | omits illustration is extended and provided in the elongate direction of the reflection part 61, passing through the center position C, and the east-west direction is provided. Is set along. The heat receiving part 62 provided above is configured similarly to the heat receiving part 12 of the light collecting device 10 described above. That is, the condensing device 60 has the same configuration as the condensing device 10 of the present invention (see FIG. 2 and the like) except that the settings of the two rotation axes (the extending directions thereof) are different.

  Therefore, in the split-type linear Fresnel type condensing device 60, the reflected light from each reflecting portion 61 is received by each reflecting line 63 by rotating each reflecting line 63 around the first rotation axis 64 as appropriate. The direction toward the heat receiving part 62 is assumed to be orthogonal to the part 62 (see FIG. 12B). Also, by mainly rotating each reflecting portion 61 appropriately around the second rotation axis 65, the reflected light from each reflecting portion 61 provided on the same reflecting line 63 is seen above the center in the north-south direction. It is assumed that it goes to the existing heat receiving part 62 (see FIG. 12C). Thereby, in the heat receiving part 62, reflected light will be condensed in the direction orthogonal to each reflection part 61 of each corresponding reflection line 63 for every range where each reflection line 63 exists in the east-west direction. . For this reason, sunlight can be condensed on the heat receiving part 62 over a long operation time from morning to evening by appropriately rotating each reflecting part 61 according to the diurnal motion of the sun.

  In this divided linear Fresnel type condensing device 60, the reflected light is condensed for each range where each reflection line 63 exists in the east-west direction with respect to the heat receiving portion 62 extending in the east-west direction. The aspect for responding to the solar position of each of the reflection parts 61 on the east side and each of the reflection parts 61 on the west side with the central position seen in the east-west direction as the boundary can be made equal. In addition, in the condensing device 60, the reflected light is collected from each reflecting portion 61 of each reflecting line 63 in a direction orthogonal to the heat receiving portion 62, and therefore the solar altitude is low. However, the angle formed by the direction in which sunlight enters and the normal direction of each reflecting portion 61 can be reduced. For this reason, in the split-type linear Fresnel type condensing device 60, it is possible to suppress the occurrence of cosine loss in all the reflection portions 61 regardless of whether the sun is on the east side or the west side (FIG. 12 ( b)), sunlight can be efficiently collected on the heat receiving portion 62 even in the morning and evening when the altitude of the sun is low. In addition, in the divided linear Fresnel type condensing device 60, the driving for appropriately rotating each reflecting portion 61 is more complicated than the concentrating device 50 described above, but depending on the installed latitude. The arrangement of the reflecting portions 61 can be set to reduce cosine loss. This is due to the following. In the light collecting device 50, in order to collect light throughout the day, it is necessary to dispose each reflecting portion 51 on both sides in the east-west direction of the heat receiving portion 52 extending in the north-south direction. On the other hand, in the condensing device 60, since there is no restriction | limiting of the position with respect to the heat receiving part 62 for condensing through the day, for example, in the northern hemisphere, each reflecting part 61 is biased to the north side with respect to the heat receiving part 62. By being able to arrange.

  However, in this divided linear Fresnel type condensing device 60, there is a problem of rotation with respect to the heat receiving part 62 (heat receiving axis Ra) of the irradiation area IA (irradiation pattern (see FIG. 13 etc.)) by the reflected light from each reflecting part 61. Will occur. This will be described below. In addition, the irradiation area | region IA means the area | region where the reflected light from the reflection part 61 illuminates the heat receiving part 62 (the surface), as shown in FIG. In FIG. 13, for easy understanding, a rectangular irradiation area IA is formed on a virtual heat receiving plane Pr in the tubular heat receiving portion 62. The heat receiving plane Pr is orthogonal to the heat receiving axis Ra of the heat receiving part 62 (heat receiving part 12) and the first plane P1 including the center position C in the reflecting part 61, and includes (passes through) the heat receiving axis Ra of the heat receiving part 62. ) Plane. In the examples shown in FIGS. 13 to 16, the reflecting portion 61 is shown as a flat rectangular mirror for easy understanding. This is related to whether or not the problem of rotation of the irradiation area IA (see FIG. 13 and the like) with respect to the heat receiving portion 62 (heat receiving axis Ra) has an effect that each reflecting portion 11 collects light in the short direction (one direction). It depends on what happens. Further, in FIG. 16, for the sake of easy understanding, the reflecting portion 61 is shown as being not rotated about the second rotation axis 65 and parallel to the installation reference plane Pb (the reflecting portion 61 is horizontal). As described below, this is to facilitate understanding because the problem of rotation is caused regardless of the rotation (rotational attitude) of each reflecting portion 11 around the second rotation axis 65. The description described in (5) is the same even when the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb is different. Accordingly, in FIG. 16, a later-described third plane P3 is orthogonal to the installation reference plane Pb.

  Here, the problem of rotation occurs regardless of the presence or absence of the function of condensing light as described above. However, when there is an action of condensing light, the influence of the problem becomes large. In other words, in FIG. 14, the reflector 61 is a flat rectangular mirror, and the size in the short side direction in the irradiation area IA is large (a rectangle with a large width). However, when the reflecting portion 61 has the above-described condensing function, the irradiation area IA has a long and narrow shape (a rectangular shape having a considerably small width dimension) on the assumption that the reflecting portion 61 forms a preferable focal point on the heat receiving plane Pr. 3 and FIG. 21)). In this case, in the heat receiving part 62, the radiation loss is reduced with a small diameter corresponding to the elongated irradiation area IA. For this reason, when there is an effect of condensing light, if a problem of rotation of the irradiation area IA described below occurs, irradiation is performed even if the rotation angle (angle θa (see FIG. 14) described later) is small. The ratio of deviating from the heat receiving portion 62 in the area IA becomes large, and a large loss occurs. Thereby, when each reflection part 11 has the effect | action which condenses in a short direction (one direction) like a present Example, the influence of the problem of the rotation with respect to the heat receiving part 62 of the irradiation area IA described below becomes large. .

  In the condensing device 60, since the plurality of reflecting portions 61 provided in parallel in the north-south direction are condensed toward the heat receiving portion 62, the plurality of reflecting portions 61 are viewed in the north-south direction, and the heat receiving portion 62. It is displaced in the north-south direction from the position where is provided, that is, it is displaced in the north-south direction with respect to the heat receiving part 62 (see FIG. 12 etc.). Each of the reflecting portions 61 has a rectangular shape that is long in the direction (east-west direction) in which the heat receiving portion 62 (the heat receiving axis Ra) extends. Therefore, it is assumed that the irradiation area IA formed by the reflecting portion 61 is formed along the heat receiving axis Ra, that is, in the east-west direction on the heat receiving plane Pr, as shown in FIGS. A straight line defined at a location where the irradiation area IA and the first plane P1 intersect is defined as an irradiation axis line Ia in the irradiation area IA. This irradiation axis line Ia coincides with the heat receiving axis line Ra.

  Here, as described above, the reflecting portion 61 can rotate around the first rotation shaft 64 extending in the north-south direction. In order to form this irradiation part IA on the heat receiving plane Pr (heat receiving part 62) corresponding to the change of the position of the sun, the reflecting part 61 is shown by an arrow A1 (clockwise direction when viewed from the south side) in FIG. As described above, it is assumed that the first rotation shaft 64 has been rotated to the state indicated by the two-dot chain line. At this time, when the altitude of the sun actually changes, it is necessary to rotate it around the second rotation shaft 65, but this is omitted for the sake of easy understanding. This is because the problem of rotation of the irradiation area IA (see FIG. 13 and the like) with respect to the heat receiving portion 62 (heat receiving axis Ra) occurs regardless of the rotation (rotational posture) of each reflecting portion 11 around the second rotation axis 65. It depends. Then, on the heat receiving plane Pr (heat receiving portion 62), as shown by an arrow A2 in FIG. 14, the irradiation area IA rotates with its center position as the rotation center, and shifts to a state indicated by a two-dot chain line.

  Specifically, when the reflection unit 61 rotates around the first rotation axis 64, it will draw a cylindrical locus shown by a broken line in FIG. Here, in the reflection part 61, the axial point p1 and the axial point p2 are set as a guide at both ends on the axis extending in the east-west direction while passing through the center position C. Here, “on the line” means one point constituting the line. A location corresponding to the on-axis point p1 in the irradiation area IA is set as a reflection axis point rp1, and a location corresponding to the on-axis point p2 in the irradiation area IA is set as a reflection axis point rp2. Since the on-axis point p1 and the on-axis point p2 exist on the axis line of the reflecting part 61, the reflecting axis 61 and the reflecting axis point rp2 receive heat when the reflecting part 61 is not rotated. It exists on the heat receiving axis Ra in the plane Pr (see FIGS. 15 and 16A). The axial point p1 and the axial point p2 are a third plane passing through the center position C while being orthogonal to the first rotating shaft 64 extending in the north-south direction when the reflecting portion 61 rotates around the first rotating shaft 64. Move on the surface of P3. Then, the axial point p1 and the axial point p2 move from the state existing on the surface of the first plane P1 to the outside of the first plane P1 (see FIG. 15). For this reason, assuming that the reflecting portion 61 is rotated in the clockwise direction when viewed from the south side with the first rotation shaft 64 as the center of rotation as shown by a two-dot chain line in FIGS. 13 and 15. As shown in (b), the on-axis point p1 moves above the first plane P1 in the plane of the third plane P3, and the on-axis point p2 in the plane of the third plane P3. Move downwards. At this time, at the location of the center position C in the reflecting portion 61, the reflecting portion 61 does not move even if the reflecting portion 61 rotates around the first rotation axis 64. Therefore, as shown in FIG. By receiving sunlight in the plane of the plane Pb), the reflected light is directed toward the heat receiving axis Ra of the heat receiving plane Pr. On the other hand, in the place of the axial point p1 in the reflection part 61, by receiving sunlight above the first plane P1, the reflected light is directed upward from the heat receiving axis Ra on the heat receiving plane Pr. Thus, the reflection axis upper point rp1 is formed above the heat receiving axis Ra. In addition, at the position of the axial point p2 in the reflecting portion 61, by receiving sunlight below the first plane P1, the reflected light is directed downward from the heat receiving axis Ra on the heat receiving plane Pr to receive heat. A reflection axis upper point rp2 is formed below the axis Ra.

  Accordingly, when the reflecting portion 61 rotates around the first rotation axis 64 extending in the north-south direction with respect to the heat receiving portion 62 extending in the east-west direction, the irradiation region IA is located at the center position on the heat receiving portion 62 (heat receiving plane Pr). And the irradiation axis line Ia is inclined with respect to the heat receiving axis line Ra (see the irradiation area IA (the irradiation axis line Ia) indicated by a two-dot chain line in FIG. 14). Therefore, when the reflecting portion 61 rotates around the first rotation axis 64, the irradiation region IA rotates relative to the heat receiving portion 62 (heat receiving axis Ra) regardless of the rotation of the reflecting portion 61 around the second rotation axis 65. End up.

  In the condensing device 60 having such a configuration, an example of a specific configuration in which each reflecting portion 61 can be rotated around each rotation axis will be described with reference to FIG. In the example of FIG. 17, a plurality of support frames 66 that individually support the reflecting portions 61 are provided. Each of the support frames 66 includes a first support arm portion 66a and a second support arm portion 66b. The first support arm portion 66a has a rod shape extending in the short direction of the reflecting portion 61, and both end portions thereof are bent in the orthogonal direction. The first support arm portion 66a has a size that can receive the reflecting portion 61 in the short direction between both end portions bent in the orthogonal direction (see FIG. 17B and the like). In the first support arm portion 66a, a pair of support holes 66c are provided at both ends curved in the orthogonal direction. The both support holes 66c are provided so as to penetrate through both end portions of the first support arm portion 66a, and their axis lines are located on the same straight line. Each support hole 66c rotatably supports a pair of support protrusions 61a provided in the reflecting portion 61. The pair of support protrusions 61 a are positioned on a straight line whose axis is parallel to the short direction while passing through the center position C of the reflecting portion 61.

  The second support arm portion 66b has a rod shape extending in the longitudinal direction of the reflection portion 61, is provided orthogonal to the first support arm portion 66a, and both end portions are bent in the orthogonal direction. The second support arm portion 66b is sized to receive the reflecting portion 61 in the longitudinal direction between both ends bent in the orthogonal direction (see FIG. 17C and the like). . In the second support arm portion 66b, a pair of support protrusions 66d are provided at both ends bent in the orthogonal direction. Both the support protrusions 66d are provided so as to protrude outward from the respective end portions of the second support arm portion 66b, and their axis lines are located on the same straight line. Both the support projections 66d (its axis) are parallel to the direction in which the long second support arm portion 66b extends, and are in a positional relationship orthogonal to the axis of the pair of support holes 66c. Each of the support protrusions 66d is rotatably supported by the support column 67, and is provided at the same position when viewed in the north-south direction and supports the reflection frames 61 arranged in parallel in the east-west direction. It connects beyond the fence (refer FIG. 17 (a) etc.).

  In each of the support frames 66, the support protrusions 61a are rotatably passed through the support holes 66c at both ends of the first support arm portion 66a, and the corresponding reflection portions 61 are provided. As described above, the support frames 66 are rotatably supported by the support columns 67 while the support frames 66 adjacent to each other in the east-west direction and the respective support protrusions 66d are connected. Thereby, each reflection part 61 can be rotated around the axis of each support protrusion 66d extending in the east-west direction together with each support frame 66. For this reason, each support protrusion 66 d (its axis) functions as the second rotation shaft 65 in each reflection portion 61. In addition, each reflecting portion 61 can rotate around the axis of each support protrusion 61a (each support hole 66c) orthogonal to the second rotation shaft 65 in the support frame 66 rotated around the second rotation shaft 65. It is possible. For this reason, each support protrusion 61 a (each support hole 66 c (its axis)) functions as the first rotation shaft 64 in each reflection portion 61. For this reason, in the example shown in FIG. 17, the light collecting device 60 fixes the second rotation shaft 65 to the installation reference plane Pb, and the first rotation shaft 64 of the reflecting portion 61 around the second rotation shaft 65. It is assumed that it rotates with rotation (the axis after the rotation is the first rotation axis 64 ').

  A state in which the above-described rotation occurs in the condensing device 60 configured as described above will be described with reference to FIGS. 18 to 20, as in the examples shown in FIGS. 13 to 16, the reflecting portion 61 is shown as a flat rectangular mirror for easy understanding. 18 to 20, the support frames 66 and the support pillars 67 are omitted for easy understanding. Further, in FIG. 21, for the sake of easy understanding, only a single reflecting portion 61 and a heat receiving portion 62 are shown, and similarly to FIG. 3, a first plane P1, a second plane P2, and a heat receiving plane Pr are attached. Show.

  In the condensing device 60, as shown in FIG. 18, in the initial state, the normal direction of each reflecting portion 61 coincides with the zenith direction, that is, each reflecting portion 61 is parallel to the installation reference plane Pb. Shall. In the condensing device 60, the line from the center position C of each reflecting portion 61 toward the heat receiving axis Ra of the heat receiving portion 62 becomes the reflected light path Rp, and in FIG. 18 viewed from the east side in the east-west direction, the first plane P1 is the reflected light path. A straight line coincides with Rp. Here, it is assumed that the sun is present in the southeast direction with respect to the light collector 60. In the condensing device 60, it is assumed that each reflecting portion 61 is rotated around the second rotation shaft 65 so that the reflected sunlight is directed toward the heat receiving portion 62 (see arrow A3). Then, in the condensing device 60, as shown in FIG. 19, each reflection part 61 is appropriately inclined with respect to the installation reference plane Pb, whereby the reflected sunlight is transmitted to the heat receiving part 62 on the first plane P1. And proceed. In this state, the normal direction of each reflecting portion 61 basically does not coincide with the reflected light path Rp (intersection line between the first plane P1 and the second plane P2). Here, the reason why they do not basically match is that when the incident direction of sunlight coincides with the first plane P <b> 1 in the reflecting portion 61, the normal direction coincides with the reflected light path Rp. In the example shown in FIG. 19, the second reflecting portion 61 from the right (sixth from the south side) has the incident direction of sunlight coincident with the first plane P <b> 1 of the reflecting portion 61, and the normal direction and the reflected light path Rp. Match.

  And in the condensing device 60, in order to make the reflected light of sunlight from each reflection part 61 advance to the direction orthogonal to the heat receiving part 62 (its heat receiving axis Ra), and to go to the heat receiving part 62 Suppose that it is rotated around the first rotation shaft 64 (see arrow A4). Then, in the light collecting device 60, as shown in FIG. 20, the traveling direction of the reflected light from the center position C of each reflecting portion 61 coincides with the reflected light path Rp, and the reflected light travels from the center position C. The direction is orthogonal to the heat receiving portion 62 (its heat receiving axis Ra). However, in each reflecting part 61 whose normal direction does not coincide with the reflected light path Rp, reflected light from the axial line extending in the longitudinal direction (non-condensing direction (east-west direction)) while passing through the center position C is received by the heat receiving part 62. Cannot be advanced toward the heat receiving axis Ra. This is due to the following. In each reflecting portion 61, when rotating around the first rotation axis 64, the longitudinal axis passing through the center position C moves in a plane perpendicular to the first rotation axis 64 including the normal direction passing through the center position C. To do. For this reason, in each reflection part 61, when a normal line direction does not correspond with the reflected light path Rp, the said axis line will remove | deviate from on the 1st plane P1. That is, in each reflecting portion 61, as described above, the longitudinal axis passing through the center position C by the rotation around the first rotation axis 64 intersects the first plane P1 at the center position C while the first plane P1 is intersected. The positional relationship crosses the plane P1. Therefore, in the longitudinal axis passing through the center position C, even if the reflected light from the center position C is advanced to the heat receiving axis Ra of the heat receiving part 62, the reflected light from other places is received by the heat receiving part. 62 cannot be advanced to the heat receiving axis Ra.

  For this reason, in the condensing device 60, when each reflection part 61 rotates around the 1st rotating shaft 64 and the 2nd rotating shaft 65 in the above-mentioned structure, the irradiation area IA will be with respect to the heat receiving part 62 (heat receiving axis line Ra). It rotates (see FIG. 21). This is shown in FIG. In the example shown in FIG. 21, the reflecting portion 61 intersects the first plane P1 at the intersection line i, and when viewed from the front, the upper side from the intersection line i exists above the first plane P1, and the front surface As viewed, the lower side than the intersection line i exists below the first plane P1. For this reason, in this reflection part 61, the axial point p1 on the longitudinal axis passing through the center position C receives sunlight above the first plane P1, and on the longitudinal axis passing through the center position C. The on-axis point p2 receives sunlight below the first plane P1. As a result, in the reflecting portion 61, the reflected light from the axial point p1 is directed to the upper side of the heat receiving axis Ra on the heat receiving plane Pr to form the reflection axis upper point rp1 above the heat receiving axis Ra. Further, in the reflecting portion 61, the reflected light from the axial point p2 is directed downward from the heat receiving axis Ra on the heat receiving plane Pr, and the reflection axial point rp2 is formed below the heat receiving axis Ra. From this, as is apparent from FIG. 21, the reflecting portion 61 rotates around the first rotating shaft 64 and the second rotating shaft 65, so that the irradiation region IA becomes the heat receiving portion 62 (heat receiving axis Ra). Rotate against it.

  Here, as described above, by appropriately rotating the reflecting portion 61 around the first rotating shaft 64 (first rotating shaft 64 ′) and the second rotating shaft 65 via the support frames 66, the solar diurnal A graph of FIGS. 22 to 36 shows how the irradiation area IA rotates when the irradiation area IA is formed in the heat receiving portion 62 (heat receiving plane Pr) following the movement. Here, in the heat receiving part 62, the center position C of each reflection part 61 supported by each support frame 66 and the support column 67, that is, the height dimension H from the installation reference plane Pb is 14 m. In FIG. 22 to FIG. 26, it is assumed that the light collecting device 60 is installed at a point of 35 degrees north latitude in the above-described configuration and corresponds to the diurnal movement of the sun in the spring equinox. 27 to 31, it is assumed that the light concentrator 60 is installed at a point of 35 degrees north latitude with the above-described configuration to correspond to the solar diurnal motion on the day of the summer solstice. In FIGS. 32 to 36, the condensing device 60 is installed at the point of 35 degrees north latitude with the above-described configuration, and is made to correspond to the diurnal movement of the sun on the winter solstice day. In FIGS. 27 to 31, the time range is the longest because the day is long in the summer solstice, and in FIGS. 32 to 36, the time range is the shortest because the day is short in the winter solstice. In 26, since it is an equinox, the time range becomes an intermediate graph.

  In FIGS. 22, 27, and 32, the distance L with respect to the heat receiving part 62 viewed in the north-south direction of the reflecting part 61 is set to −20 m, that is, the reflecting part 61 is provided at a position 20 m south of the heat receiving part 62. Yes. In FIGS. 23, 28, and 33, the distance L with respect to the heat receiving portion 62 viewed in the north-south direction of the reflecting portion 61 is -10 m, that is, the reflecting portion 61 is provided at a position 10 m south of the heat receiving portion 62. In FIG. 24, FIG. 29 and FIG. 34, the distance L with respect to the heat receiving part 62 seen in the north-south direction of the reflecting part 61 is 0 m, that is, the reflecting part 61 is provided at a position directly below the heat receiving part 62 in the vertical direction. . 25, 30, and 35, the distance L with respect to the heat receiving portion 62 viewed in the north-south direction of the reflecting portion 61 is 10 m, that is, the reflecting portion 61 is provided at a position 10 m north of the heat receiving portion 62. In FIG. 26, FIG. 31, and FIG. 36, the distance L with respect to the heat receiving part 62 seen in the north-south direction of the reflection part 61 is 20 m, ie, the reflection part 61 is provided in the position of the 20 m north side with respect to the heat reception part 62.

  22 to 36, an angle formed between the heat receiving axis Ra and the irradiation axis Ia of the irradiation area IA on the heat receiving plane Pr is an angle θa (see FIG. 14), and the counterclockwise view when the heat receiving plane Pr is viewed from the reflecting portion 61 side. The rotation direction around is the positive direction of the angle θa. In FIGS. 22 to 36, the angle formed by the reflecting portion 61 and the installation reference plane Pb when rotated about the second rotation axis 65 is an angle θ2, and the counterclockwise rotation direction when viewed from the east side is the angle θ2. The positive direction. Further, in FIGS. 22 to 36, the angle formed by the reflecting portion 61 and the installation reference plane Pb when rotated around the first rotating shaft 64 rotating with the rotation of the reflecting portion 61 around the second rotating shaft 65 is shown. The angle θ1 is set, and the counterclockwise rotation direction when viewed from the south side of the first rotation shaft 64 is the positive direction of the angle θ1.

  Since the condensing device 60 has the above-described configuration, first, each reflecting portion 61 is rotated around the second rotation shaft 65 (supporting protrusion 66d) through the supporting frame 66 (see FIG. 17) at an angle θ2. Just rotate. This is because in the light collecting device 60, the rotations around the second rotation axis 65 in the reflecting portions 61 arranged in parallel in the east-west direction at the same position viewed in the north-south direction are equal to each other. In the condensing device 60, since the support protrusions 66d of the support frames 66 that support the reflecting portions 61 are connected to each other (see FIG. 17), the reflecting portions 61 are collectively moved to the second rotating shaft 65. It can be rotated by an angle θ2. Thereafter, in the light collecting device 60, each reflection portion 61 is rotated about the first rotation shaft 64 (each support protrusion 61 a) by an angle θ 1 in each support frame 66 (see FIG. 17). Here, in each reflection part 61, the angle θ1 rotated around the first rotation axis 64 varies depending on the set position (distance from the heat receiving part 62 (its heat receiving axis Ra)).

  As shown in FIGS. 22 to 36, in the reflecting portion 61, the irradiation area IA (its irradiation axis line) is basically irrespective of the change in the season except for the case where it is provided at a position directly below the heat receiving portion 62. Ia) is rotated with respect to the heat receiving plane Pr, that is, the heat receiving portion 62 (its heat receiving axis Ra). Here, basically, the reason is that there may be a condition in which no rotation occurs by chance, such as the reflection portion 61 having a distance L of 10 m in Equinox Day shown in FIG. When this is an equinox day at a point of latitude 35 degrees, a curve indicating a change in the angle θ2 around the second rotation axis 65 (supporting protrusion 66d) when following the diurnal motion of the sun is a distance L This is due to the fact that it becomes the maximum or the minimum at about 10m across the south or middle. As can be seen from the change in the angle θa in FIGS. 22 to 36, the rotational angle of the rotation angle is changed between the reflection part 61 on the south side and the reflection part 61 on the north side with respect to the heat receiving part 62. The peak time changes, but it often increases in the morning and evening when the altitude of the sun is low. The rotation angle exceeds ± 4 degrees even when the maximum value is the smallest, exceeds ± 6 degrees in most cases, and exceeds ± 12 degrees when the maximum value is large. Here, for example, if the length dimension of the reflecting portion 61 in the longitudinal direction is 1 m, even if it is rotated by ± 6 degrees, it is orthogonal to the heat receiving axis Ra at both ends of the irradiation axis Ia on the heat receiving plane Pr. The amount of displacement in the direction of turning is about 10 cm, and the amount of displacement is about 20 cm with a rotation of ± 12 degrees. For this reason, under the above-described conditions, the loss rapidly increases from around the rotation angle exceeding ± 12 degrees.

Here, it is assumed that the sun image is formed on the heat receiving plane Pr (heat receiving portion 62) in the irradiation area IA by the reflected light from the reflecting portion 61, and the size of the sun image is 0.0093 × (reflecting portion 61). To the heat receiving portion 62). Then, the size of the image of the sun that each reflecting portion 61 forms on the heat receiving plane Pr (heat receiving portion 62) is about 13 cm (0.0093 × 14 (from height 14 m)) at L = 0 m that is the smallest, When L = ± 5 m, it becomes about 14 cm (0.0093 × SQRT (14 ² +5 ² )), and when L = ± 10 m, it becomes about 16 cm (0.0093 × SQRT (14 ² +10 ² )). Here, if the diameter dimension of the heat receiving portion 62 (heat receiving tube) is 20 cm, there is a margin of 20 cm−13 cm = 7 cm with respect to the smallest sun image (L = 0). In this case, as described above, assuming that the length dimension of the reflecting portion 61 in the longitudinal direction is 1 m, the displacement amount at both end positions of the irradiation axis Ia is about 7 cm even if the rotation is ± 4 degrees. For this reason, the irradiation area IA protrudes from the heat receiving portion 62 (see the irradiation area IA indicated by a two-dot chain line in FIG. 14). For this reason, it becomes impossible to concentrate sunlight on the heat receiving part 62 efficiently, and a loss due to rotation occurs. Similarly, since there is a margin of 6 cm for the sun image at L = ± 5, the rotation limit is about ± 3.4 degrees, and a margin of 4 cm for the sun image at L = ± 10. Therefore, about ± 2.3 degrees is the limit of rotation. When L is approximately ± 17 m, the size of the image of the sun formed on each heat receiving plane Pr (heat receiving portion 62) by each reflecting portion 61 is about 20 cm. It will occur. Therefore, when the diameter of the heat receiving portion 62 (heat receiving tube) is 20 cm, even if the rotation is ± 6 degrees, the irradiation area IA protrudes from the heat receiving portion 62 (irradiation indicated by a two-dot chain line in FIG. 14). As a result, the sunlight cannot be efficiently collected on the heat receiving portion 62. Similarly, in the case of rotation of ± 12 degrees, the amount of displacement in the direction orthogonal to the heat receiving axis Ra at both end positions of the irradiation axis Ia on the heat receiving plane Pr is about 20 cm, so that the loss further increases.

  In the summer solstice, since the altitude of the sun is higher than that in the spring equinox, the loss (cosine loss) due to the apparent size of the reflecting portion 61 from the sun being small as a whole is small, The loss due to the rotation of the irradiation area IA is slightly large (see FIGS. 22 to 26 and FIGS. 27 to 31). Further, at the time of the winter solstice, the loss due to the rotation of the irradiation area IA is the largest as compared with other seasons, and the loss due to the apparent size of the reflection part 61 from the sun being reduced ( The influence is greater than the increase in cosine loss (see FIGS. 22 to 26, FIGS. 27 to 31 and FIGS. 32 to 36). As can be seen from a comparison between FIG. 27 to FIG. 31 showing the time of the summer solstice and other drawings, in the summer, the reflecting portion 61 located on the north side (L> 0) with respect to the heat receiving portion 62 is the heat receiving portion. Even if the distance from 62 is small, the rotation (angle θa) of the irradiation area IA tends to be large. This is due to the higher solar altitude in summer. Further, as can be seen from a comparison between FIGS. 32 to 36 showing the time of the winter solstice and other drawings, the overall rotation (angle θa) of the irradiation region IA tends to increase in the winter season.

  For this reason, even in the split linear Fresnel type concentrator 60, the fluctuation of the solar energy (thermal energy) obtained becomes large between the time in the south and the morning and evening when the altitude of the sun is low. Here, the size of the heat receiving portion 62 viewed in the direction orthogonal to the heat receiving axis Ra on the heat receiving plane Pr is larger than the size measured in the direction in which the irradiation axis Ia extends in the irradiation area IA (sun image). Is sufficiently large, it is possible to prevent the irradiation area IA from protruding from the heat receiving portion 62 due to the rotation of the irradiation area IA. However, an increase in the size of the heat receiving portion 62 causes an increase in the surface area of the heat receiving portion 62, which increases heat radiation and thus increases loss. This is because thermal radiation is proportional to the fourth power of the absolute temperature (K) (more precisely, the value obtained by subtracting the ambient temperature from the absolute temperature) and the size of the surface area. In addition, a decrease in size as viewed in the direction in which the irradiation axis Ia extends in the irradiation area IA causes a decrease in size in a direction parallel to the heat receiving axis Ra in the reflection portion 61. If the area for the arrangement is made equal, the number of the reflection parts 61 is increased, and an increase in the first driving part and the second driving part (not shown) is caused, resulting in deterioration of efficiency. Furthermore, although the rotation angle of the irradiation area IA with respect to the heat receiving portion 62 (heat receiving plane Pr) is increased, it may be considered that the use in the time zone in which the irradiation area IA protrudes from the heat receiving portion 62 is stopped. This is not a fundamental solution because it reduces the time to use solar energy.

  On the other hand, in the condensing device 10 of the present invention, since the first rotating shaft 13 and the second rotating shaft 14 are set as described above, the irradiation area IA (its irradiation axis Ia) is irradiated. It is possible to prevent rotation with respect to the heat receiving portion 12 (heat receiving plane Pr (heat receiving axis Ra (irradiated axis))). This will be described below with reference to FIGS. 37 and 38. The state shown in FIG. 38A before the reflecting portion 11 is rotated around the first rotating shaft 13 and the state shown in FIG. 38B after the reflecting portion 11 is rotated around the first rotating shaft 13. In this state, the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb when viewed from the west in the east-west direction changes (see the reflecting portion 11 indicated by a solid line and a two-dot chain line in FIG. 37). In FIG. 38, for easy understanding, the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb is shown as being constant. In the example shown in FIGS. 37 and 38, as in FIGS. 13 to 16, the reflecting portion 11 is shown as a flat rectangular mirror for easy understanding. Further, in FIG. 38, for easy understanding, the reflecting portion 11 is shown in a state parallel to the installation reference plane Pb (the reflecting portion 11 is horizontal). The same applies even when the angle (inclination) with respect to Pb is different. The change in the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb changes depending on the setting of the first rotation shaft 13 and also changes due to the rotation around the first rotation shaft 13. The change in the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb due to the rotation around the first rotation axis 13 can be adjusted by the rotation of the reflecting portion 11 around the second rotation axis 14. Here, the change in the angle (inclination) of the reflecting portion 11 with respect to the installation reference plane Pb is caused by an axis line (an axial point p3 and an axis described later) extending in the longitudinal direction of the reflecting portion 11 through the center position C in the reflecting portion 11. Therefore, the movement of the on-axis point p3 and the on-axis point p4, which will be described later, with the rotation of the reflecting portion 11 is not affected. In FIG. 38, the third plane P3 is also shown as a comparison with FIG. 16 for easy understanding.

  In the split linear Fresnel type condensing device 10 of the present invention, the first rotating shaft 13 is orthogonal to the first plane P1 including the heat receiving axis Ra of the heat receiving unit 12 and the center position C in each reflecting unit 11, and the A line segment passing through the center position C is used. For this reason, when the reflection part 11 rotates around the 1st rotating shaft 13, it will draw the cylindrical locus | trajectory shown with a broken line in FIG. Here, in the reflecting portion 11, as both the same as the axial point p1 and the axial point p2 (see FIG. 15 and the like) in the reflecting portion 61, both ends on the axial line extending in the east-west direction passing through the center position C are used as a guide. It is assumed that the on-axis point p3 and the on-axis point p4 are set. A location corresponding to the irradiation area IA of the on-axis point p3 is defined as a reflection axis on-point rp3, and a location corresponding to the irradiation area IA of the on-axis point p4 is defined to be a reflection-axis on-point rp4. Since the on-axis point p3 and the on-axis point p4 are on the axis of the reflecting part 11, the reflecting axis on-point rp3 and the reflecting axis on-point rp4 are the heat receiving points when the reflecting part 11 is not rotated. It exists on the heat receiving axis Ra in the plane Pr (see FIG. 37 and FIG. 38 (a)). The axial point p3 and the axial point p4 are within the plane of the first plane P1 orthogonal to the first rotational axis 13 set as described above when the reflecting portion 11 rotates around the first rotational axis 13. Moving. That is, the on-axis point p3 and the on-axis point p4 maintain the state of being on the first plane P1 even when the reflecting portion 11 rotates around the first rotation axis 13. For this reason, when the reflecting portion 11 is rotated in the clockwise direction when viewed from the south side with the first rotation shaft 13 as the rotation center as shown by a two-dot chain line in FIG. 37, FIGS. 37 and 38 (b). As shown, the on-axis point p3 and the on-axis point p4 move on the first plane P1. At this time, at the location of the central position C in the reflecting portion 11, the reflecting portion 11 does not move even if the reflecting portion 11 rotates around the first rotation axis 13, and therefore, as shown in FIG. By receiving sunlight in the plane of the plane Pb), the reflected light is directed toward the heat receiving axis Ra of the heat receiving plane Pr. Here, “on the line” means one point constituting the line. And in the location of the axial point p3 in the reflection part 11, by receiving sunlight on the 1st plane P1 above the installation reference plane Pb, the reflected light is directed to the heat receiving axis Ra on the heat receiving plane Pr. Accordingly, a reflection axis upper point rp3 is formed on the heat receiving axis Ra. In addition, at the position of the axial point p4 in the reflecting portion 11, sunlight is received below the installation reference plane Pb on the first plane P1, and the reflected light is directed to the heat receiving axis Ra on the heat receiving plane Pr. Accordingly, a reflection axis upper point rp4 is formed on the heat receiving axis Ra.

  For this reason, even if the reflecting part 11 rotates around the first rotation axis 13 set as described above with respect to the heat receiving part 12 extending in the east-west direction, the reflection axis upper point rp3 and the reflection axis upper point rp4 are always receiving heat. It will be formed on the axis line Ra. Therefore, even if the reflecting portion 11 rotates around the first rotation axis 13 set as described above with respect to the heat receiving portion 12 extending in the east-west direction, the heat receiving portion 12 (heat receiving plane Pr) as the irradiated portion. The upper irradiation area IA does not rotate, and the irradiation axis Ia can be prevented from being inclined with respect to the heat receiving axis Ra as the irradiated axis. Strictly speaking, the heat receiving unit 12 from each position (heat receiving plane Pr) except for the center position C on the axis extending in the east-west direction while passing through the center position C by the rotation of the reflecting section 11 around the first rotation axis 13. There is a change in the distance to.

  In addition, in the split-type linear Fresnel type condensing device 10 of the present invention, the second rotating shaft 14 is on the first plane P1 (included in the first plane P1), and the corresponding reflecting portion 11 A line segment passing through the center position C is used. The second rotation shaft 14 is coincident with an axis extending in the east-west direction through the center position C where the axial point p3 and the axial point p4 are set. For this reason, even if the reflecting part 11 rotates around the second rotation axis 14, the position corresponding to the center position C in the irradiation area IA, that is, the center position of the irradiation area IA is the heat receiving axis in the heat receiving plane Pr (heat receiving part 12). When present on Ra, the reflection axis upper point rp3 and the reflection axis upper point rp4 corresponding to the axial point p3 and the axial point p4 in the irradiation region IA are reflected on the heat receiving plane Pr (heat receiving part 12). It can be present on Ra. For this reason, it is possible to prevent the irradiation region IA from rotating with respect to the heat receiving unit 12 regardless of the rotation of the reflection unit 11 around the first rotation axis 13 and the rotation of the reflection unit 11 around the second rotation axis 14. Can do.

  Further, as described above, the reflection unit 11 is rotatable about the second rotation axis 14 (second axis) perpendicular to the first rotation axis 13 with respect to the second rotation axis stage 25. It is supported by. The second rotary shaft stage 25 is supported by the first rotary shaft stage 26 so as to be rotatable around the first rotary shaft 13 (first axis) with respect to the first rotary shaft stage 26. The first rotating shaft stage 26 is fixed to the installation reference plane Pb at a position corresponding to the position setting of the reflecting unit 11 supported by the second rotating shaft stage 25 with respect to the heat receiving unit 12. Thereby, since the 1st rotating shaft 13 is being fixed to the installation reference plane Pb by the 1st rotating shaft stage 26, the 1st plane containing the heat receiving axis line Ra of the heat receiving part 12, and the center position C in each reflecting part 11 is obtained. A line segment that is orthogonal to P1 and that passes through the center position C is maintained. Further, the second rotating shaft 14 changes its posture with respect to the installation reference plane Pb by the rotation of the second rotating shaft stage 25 around the first rotating shaft 13, but is on the first plane P1 (included in the first plane P1). ) And the line segment passing through the center position C of the corresponding reflector 11 is maintained. This is because the second rotation shaft 14 always changes around the first rotation shaft 13 as the rotation center even when the second rotation shaft stage 25 rotates around the first rotation shaft 13. For this reason, by rotating the reflecting portion 11 around the first rotation shaft 13 and the second rotation shaft 14, the reflection axis upper point rp3 and the reflection axis upper point in the irradiation region IA are included regardless of the order (including simultaneous). rp4 can be present on the heat receiving axis Ra in the heat receiving plane Pr (heat receiving part 12). Here, strictly speaking, the reflection axis upper point rp3 and the reflection axis upper point rp4 in the irradiation region IA deviate from the heat receiving axis Ra on the heat receiving plane Pr (heat receiving part 12) once during the rotation. However, in practice, the reflecting portion 11 is rotated around the first rotating shaft 13 and the second rotating shaft 14 in order to follow the diurnal motion of the sun, so that the movement is extremely small in a short time. By repeating the above, it is possible that the reflection axis upper point rp3 and the reflection axis upper point rp4 are not substantially deviated from the heat receiving axis Ra.

  In the condensing device 10 configured as described above, how the above-described rotation is prevented will be described with reference to FIG. 3 in addition to FIGS. 39 to 41. 39 to 41, as in the example shown in FIGS. 37 and 38, the reflecting portion 11 is shown as a flat rectangular mirror for easy understanding. 39 to 41, the support mechanism 29 (the first rotary shaft stage 26 and the second rotary shaft stage 25 (see FIG. 7 and the like)) is omitted for easy understanding. Further, in FIG. 41, for easy understanding, each of the reflecting portions 11 is shown by a solid line after being rotated around the second rotation axis 14, and two before being rotated around the second rotation axis 14. It is indicated by a dotted line.

  In the condensing device 10, as shown in FIG. 39, in the initial state, the normal direction of each reflecting portion 11 coincides with the reflected light path Rp, that is, each reflecting portion 11 faces the heat receiving portion 12. . Since the reflected light path Rp is a line from the center position C of each reflecting part 11 to the heat receiving axis Ra of the heat receiving part 12, in FIG. 39 viewed from the east side in the east-west direction, the first plane P1 is the reflected light path Rp. Matching straight lines. Here, it is assumed that the sun is present in the southeast direction with respect to the light collector 10. In the condensing device 10, each reflecting part 11 shall be rotated around the 1st rotating shaft 13 so that it may respond | correspond to the diurnal motion of sunlight (refer arrow A5). Then, in the condensing apparatus 10, as shown in FIG. 40, each reflection part 11 is suitably inclined from the state facing the heat receiving part 12. In this state, in each reflecting portion 11, regardless of the rotation angle around the first rotation shaft 13 (rotational posture), it passes through the center position C in the long direction (non-condensing direction (east-west direction)). The extending axis can be positioned on the first plane P1. This is because, in the light collecting apparatus 10, as described above, the first rotation shaft 13 is set to be orthogonal to the first plane P <b> 1 while passing through the center position C of the corresponding reflecting portion 11. In the light collecting apparatus 10, the longitudinal axis passing through the center position C is coincident with the second rotation axis 14. For this reason, in the condensing device 10, the second rotation shaft 14 can be positioned on the first plane P <b> 1 regardless of the rotation angle (rotation posture) of each reflecting portion 11 around the first rotation shaft 13. it can.

  And in the condensing apparatus 10, in order to make the reflected light of sunlight from each reflection part 11 advance to the direction orthogonal to the heat receiving part 12 (its heat receiving axis line Ra), and to go to the heat receiving part 12 Suppose that it is rotated around the second rotation axis 14 (see arrow A6). In the examples shown in FIGS. 39 to 41, the second reflecting portion 61 from the right (sixth from the south side) has the incident direction of sunlight coincident with the first plane P1 in the reflecting portion 61. The rotation about the second rotation shaft 14 is not performed. Then, in the condensing device 10, as shown in FIG. 41, the advancing direction of the reflected light from the center position C of each reflecting portion 11 coincides with the reflected light path Rp, and the advancing direction of the reflected light from the center position C. The direction is orthogonal to the heat receiving portion 12 (its heat receiving axis Ra). As described above, since the longitudinal axis passing through the center position C, that is, the second rotation shaft 14 is always positioned on the first plane P1, the rotation angle around the second rotation shaft 14 is reduced. Regardless of the size (rotational posture), the longitudinal axis passing through the center position C can be positioned on the first plane P1. Thereby, in each reflection part 11, the reflected light from the longitudinal direction axis line which passes along the center position C can be located on the 1st plane P1, and it is made to advance to the heat receiving axis line Ra of the heat receiving part 12. FIG. be able to.

  For this reason, in the condensing device 10, in the above-described configuration, even if each reflecting portion 11 is rotated around the first rotating shaft 13 and the second rotating shaft 14, the irradiation region IA becomes the heat receiving portion 12 (heat receiving axis Ra). It does not rotate (see FIG. 3). This is shown in FIG. In the example shown in FIG. 3, the reflecting section 11 intersects the first plane P1 at the intersection line i, and the upper side of the intersection line i exists above the first plane P1 when viewed from the front. As viewed, the lower side than the intersection line i exists below the first plane P1. The intersection line i coincides with the longitudinal axis passing through the center position C in the reflecting portion 11 and coincides with the second rotation axis 14 in the reflecting portion 11. For this reason, in this reflection part 11, it will receive sunlight on the 1st plane P1 in all the places on the axis line of the elongate direction which passes along the center position C containing the axial point p3 and the axial point p4. . Thereby, in this reflection part 11, the reflected light from the axial point p3 is made to direct on the heat receiving axis line Ra in the heat receiving plane Pr, and the reflection axis upper point rp3 is formed on the said heat receiving axis line Ra. Further, in the reflecting portion 11, the reflected light from the axial point p4 is directed to the heat receiving axis Ra on the heat receiving plane Pr, and the reflection axis upper point rp4 is formed on the heat receiving axis Ra. From this, as is apparent from FIG. 3, even when the reflecting portion 11 rotates around the first rotating shaft 13 and the second rotating shaft 14, the irradiation area IA becomes the heat receiving portion 12 (heat receiving axis Ra). It does not rotate with respect to it.

  As described above, in the light collecting device 10, even if each of the reflecting portions 11 is rotated around the first rotation shaft 13 and the second rotation shaft 14, an axis line orthogonal to the first rotation shaft 13 (long through the center position C) is long. By rotating the irradiation area IA relative to the heat receiving portion 12 (heat receiving axis Ra), the first plane P1 is always included in the direction (axis extending in the non-condensing direction). However, since each reflecting part 11 has a function of condensing, an axis perpendicular to the first rotation axis 13 (an axis extending in the long direction (non-condensing direction)) is always included in the first plane P1. Even when the angle of incidence on the reflecting portion 11 and the angle of reflection by the reflecting portion 11 are extremely large, a loss due to aberration may appear. However, in reality, the NA (numerical aperture) of the curved surface for the light collecting action set in the short direction (one direction) in the reflecting portion 11 is extremely small, so that the effect of loss due to aberrations is substantially affected. It does not occur.

  Here, the state of the irradiation area IA when the irradiation area IA is formed in the heat receiving section 12 (heat receiving plane Pr) by appropriately rotating the reflection section 11 to follow the diurnal motion of the sun is shown in FIG. It is shown by the graph in FIG. In the graphs of FIGS. 42 to 61, the first rotary shaft 13 whose absolute position with respect to the heat receiving portion 12 (its heat receiving axis Ra) is fixed (the absolute positional relationship does not change) and the rotation thereof are set as described above. Even when the reflecting portion 11 is rotated with the second rotating shaft 14 rotating under the above-described conditions as the rotation center, the heat receiving portion 12 (heat receiving plane Pr) is irradiated by following the solar diurnal motion. It shows that the region IA can be formed. In FIGS. 42 to 46, it is assumed that the condensing device 10 is installed at a point of 35 degrees north latitude in the above-described configuration and corresponds to the diurnal movement of the sun on the spring equinox. 47 to 51, the condensing device 10 is installed at the point of 35 degrees north latitude in the above-described configuration, and is made to correspond to the solar diurnal motion on the day of the summer solstice. 52 to 56, it is assumed that the condensing device 10 is installed at a point of 35 degrees north latitude with the above-described configuration, and corresponds to the solar diurnal motion on the winter solstice day. In FIGS. 47 to 51, the longest time range is shown in the summer solstice, so the time range is the longest. In FIGS. 52 to 56, the shortest time range is shown in the winter solstice, and the time range is the shortest. In 46, since it is the equinox, the time range becomes an intermediate graph. In FIGS. 57 to 61, it is assumed that the light collecting device 10 is installed at the point of latitude 0 degree with the above-described configuration and corresponds to the solar diurnal motion of the Equinox Day.

  42 to 61, the height dimension H of the heat receiving portion 12 from the installation reference plane Pb is 14 m. 42, FIG. 47, FIG. 52 and FIG. 57, the distance L with respect to the heat receiving part 12 seen in the north-south direction of the reflecting part 11 is -20 m, that is, the reflecting part 11 is provided at a position 20 m south of the heat receiving part 12. ing. 43, FIG. 48, FIG. 53, and FIG. 58, the distance L with respect to the heat receiving part 12 seen in the north-south direction of the reflecting part 11 is −10 m, that is, the reflecting part 11 is provided at a position 10 m south of the heat receiving part 12. ing. That is, in the reflecting portion 11, the zenith angle of the line segment (first plane P1) extending from the center position C to the heat receiving axis Ra of the heat receiving portion 12 is approximately −35 degrees (the counterclockwise rotation direction when viewed from the east side is normal). Side). This zenith angle is equal to the angle formed by the first rotation shaft 13 of the reflecting portion 11 and the installation reference plane Pb with a distance L of −10 m. 44, 49, 54, and 59, the distance L with respect to the heat receiving part 12 as viewed in the north-south direction of the reflecting part 11 is 0 m, that is, the reflecting part 11 is perpendicular to the heat receiving part 12 and perpendicular to the heat receiving part 62. It is provided at a position directly below the direction. Since the reflecting part 11 at this position is located directly below the heat receiving part 12, the sunlight irradiating itself is reflected so as to jump up directly (the zenith direction). 45, FIG. 50, FIG. 55, and FIG. 60, the distance L with respect to the heat receiving part 12 seen in the north-south direction of the reflection part 11 is 10 m. That is, the reflecting portion 11 is provided at a position on the north side 10 m with respect to the heat receiving portion 12, and the zenith angle of the line segment (first plane P1) extending from the center position C to the heat receiving axis Ra of the heat receiving portion 12 is approximately. It is 35 degrees. This zenith angle is also equal to the angle formed by the first rotation shaft 13 of the reflecting portion 11 and the installation reference plane Pb with a distance L of 10 m. In FIG. 46, FIG. 51, FIG. 56, and FIG. 61, the distance L with respect to the heat receiving part 12 seen in the north-south direction of the reflecting part 11 is 20 m. That is, the reflecting portion 11 is provided at a position 20 m north of the heat receiving portion 12, and the zenith angle of the line segment (first plane P1) extending from the center position C to the heat receiving axis Ra of the heat receiving portion 12 is approximately. It is 55 degrees. This zenith angle is also equal to the angle formed by the first rotation shaft 13 of the reflecting portion 11 and the installation reference plane Pb with a distance L of 20 m.

  In FIGS. 42 to 61, changes due to the revolution of the earth during one day are omitted in the calculation in the diurnal motion of the sun. For this reason, the diurnal movement of the sun is symmetric between morning and afternoon with respect to South Central Time. Further, the diurnal motion seasons in FIGS. 42 to 61 are calculated for the equinox, the summer solstice, and the winter solstice (on the ecliptic). Further, in FIGS. 42 to 61, unlike the general definition of sunrise and sunset, the center of the sun is used as a reference, and refraction and altitude due to the atmosphere are not considered. The same applies to FIGS. 22 to 36.

  42 to 61, an angle formed between the heat receiving axis Ra and the irradiation axis Ia of the irradiation area IA on the heat receiving plane Pr is an angle θa (see FIG. 14), and the heat receiving plane Pr is counterclockwise when viewed from the reflecting portion 11 side. Is the positive direction of the angle θa. 42 to 61, the angle formed by the reflecting portion 11 and the installation reference plane Pb on the first plane P1 when rotated about the first rotation axis 13 is an angle θ1 (see FIG. 6A). The counterclockwise rotation direction when viewed from the south side of the first rotation shaft 13 is the positive direction of the angle θ1. This angle θ1 is orthogonal to the normal line (the direction) passing through the center position C in the reflecting portion 11 and the direction (heat receiving axis Ra (east-west direction)) in which the reflected light (the reflected light beam from the center position C) is directed at the center position C. The second plane P2) and the angle formed by the second plane P2) are 0 degrees at the south-central time. Further, in FIGS. 42 to 61, the angle formed between the tangential plane including the center position C and the first rotating shaft 13 in the reflecting portion 11 when rotated around the second rotating shaft 14 is an angle θ2 (FIG. 6B). The rotation direction counterclockwise when viewed from the east side of the second rotation shaft 14 is the positive direction of the angle θ2. This angle θ <b> 2 indicates an angle formed by the first plane P <b> 1 orthogonal to the first rotation axis 13 and a normal line (the direction) passing through the center position C in the reflecting portion 11, and rotates around the first rotation axis 13. This is based on the normal direction of the reflecting portion 11 after the above.

  Qualitative explanation of the changes in the angle θa, the angle θ1, and the angle θ2 by taking out some of the graphs of FIGS. 42 to 61 due to the change in the season, the change in the position with respect to the heat receiving unit 12 and the change in the latitude. do. Under the conditions of this graph, on the Equinox day, the sun appears in the east on the horizon at sunrise, and the sun sinks from the west on the horizon at sunset. As described above, the angle θ2 at the time of sunrise and sunset is approximately 0 degrees (the initial state where the reflecting portion 11 is around the second rotation shaft 14). When the reflecting portion 11 (distance L = 10 m) at a position 10 m north of the heat receiving portion 12 at a point of 35 degrees north latitude is rotated around both rotation axes in accordance with the diurnal movement of the sun on an equinox day, As shown in FIG. 44, the angle θ2 remains substantially 0 degrees (initial state around the second rotation shaft 14) and does not change. If this is a spring equinox day at a point of latitude 35 degrees, the curve indicating the change in the angle θ2 around the second rotation axis 14 when following the sun's diurnal motion has a distance L of about 10 m. By switching between becoming maximum or minimum at the time of South and Central. That is, when the distance L <10 m, the curve showing the change in the angle θ2 is convex upward as shown in FIGS. 42 to 44, and when the distance L> 10 m, the change in the angle θ2 is shown as shown in FIG. The curve indicating 凸 is convex downward. When the reflection unit 11 (distance L = 0 m) at a position of 35 degrees north latitude and directly below the heat receiving unit 12 is rotated around both rotation axes in accordance with the diurnal movement of the sun in the spring equinox, FIG. As shown, the sunrise and sunset angle θ1 is 45 degrees. Also, under this condition, as shown in FIG. 44, the reflecting portion 11 jumps up incident light having a zenith angle of 35 degrees to a zenith angle of 0 degrees (that is, directly above). The angle is half (= 17.5 degrees).

  As shown in FIGS. 47 to 51, the reflecting portion 11 at a latitude of 35 degrees north latitude rotates around both rotation axes in response to the diurnal movement of the sun on the summer solstice day, as compared with other seasons. Thus, the angle θ2 is shifted to the negative side as a whole. This is because the altitude of the sun (the altitude of the incident angle of sunlight on the reflecting portion 11) is high. In addition, the reflection part 11 (distance L = 10 m) located 10 m north of the heat receiving part 12 at a point of 35 degrees north latitude is rotated around both rotation axes in accordance with the diurnal movement of the sun on the summer solstice. As shown in FIG. 50, as compared with the case of spring equinox (see FIG. 45), the angle θ2 is generally smaller (shifted to the negative side). This is because, when viewed from the reflecting portion 11, the sun in the middle of the south comes to the upper side of the heat receiving portion 12 (heat receiving tube). When the reflecting portion 11 (distance L = −10 m) at a position 10 m south of the heat receiving portion 12 at a point of 35 degrees north latitude is rotated around both rotation axes in accordance with the diurnal movement of the sun on the winter solstice day. As shown in FIG. 53, the angle θ2 is entirely shifted to the positive side as compared with other seasons. This is because the altitude of the sun (the altitude of the incident angle of sunlight on the reflecting portion 11) is low.

  If the earth's revolution during the day is not taken into consideration at the point of 0 latitude latitude (just below the equator) shown in Fig. 57 to Fig. 61, the diurnal motion of the sun will be sunrise from true east, Street, sunset to the west. For this reason, when the reflection part 11 (distance L = 0 m) just below the heat receiving part 12 at a point of 0 degree latitude is rotated around both rotation axes in accordance with the diurnal motion of the sun on an equinox day. As shown in FIG. 59, the angle θ1 changes linearly, and the angle θ2 is always approximately 0 degrees. That is, under this condition, the reflecting portion 11 is rotated at a constant angular speed around the first rotation axis 13 and is not rotated around the second rotation axis 14. In addition, at the point of latitude 0 degree in spring equinox (just below the equator), as is clear from the comparison between FIG. 57 and FIG. 61 or the comparison between FIG. 58 and FIG. On the positive side and the negative side of the direction, the angle θ2 at the position where the distance from the heat receiving unit 12 is equal is the same magnitude, and the positive and negative are reversed. Note that the above description at a point of latitude 0 degrees (directly below the equator) is the same for the summer solstice and the winter solstice although illustration is omitted.

  42 to 61, since the angle θa formed by the heat receiving axis Ra and the irradiation axis Ia of the irradiation area IA is always 0 degree on the heat receiving plane Pr, the first rotation axis corresponding to the diurnal motion of the sun. It can be seen that the irradiation region IA is prevented from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra) due to the rotation of the reflecting portion 11 around 13 and the second rotation axis 14. 42 to 46, 47 to 51, 52 to 56, or 57 to 61, the position of each reflecting portion 11 with respect to the heat receiving portion 12 (the distance L to the heat receiving portion 12 (the heat receiving portion 12). The change of the rotation mode of each reflecting portion 11 around the first rotating shaft 13 and the second rotating shaft 14 corresponding to the diurnal movement of the sun is caused by the change in the north-south direction with respect to 12). However, it can be seen that the irradiation region IA is prevented from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra). 42 to 46, 47 to 51, and FIGS. 52 to 56, the first corresponding to the diurnal movement of the sun due to the change of the season, as is clear. Even if the aspect of rotation of the reflecting portion 11 around the rotating shaft 13 and the second rotating shaft 14 is different, the irradiation region IA is prevented from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra). . 42 to 46 and FIGS. 57 to 61, it is clear that the first corresponding to the diurnal motion of the sun due to the change in the installation position (latitude) of the light collector 10. Even if the aspect of rotation of the reflecting portion 11 around the first rotating shaft 13 and the second rotating shaft 14 is different, the irradiation region IA is prevented from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra). Yes. This is the same even when the installation position changes between the northern hemisphere and the southern hemisphere, although a clear illustration is omitted.

  Here, if the latitude, season, and time are the same, the conditions of the incident light rays due to the diurnal motion of the sun are equal, so the direction of the normal (normal vector) that passes through the center position C of each reflector 11 is as follows. The configuration of the present invention (condenser 10) is the same as that of the conventional configuration (concentrator 60). This is because each of the reflecting portions 11 is different from the heat receiving portion 12 (62) regardless of the setting difference between the first rotating shaft 13 and the second rotating shaft 14 and the first rotating shaft 64 and the second rotating shaft 65. This is because the angle is set so that the reflected light is directed in a direction orthogonal to the heat receiving axis Ra extending in the east-west direction. For this reason, in the condensing apparatus 10 of this invention, since rotation of the irradiation area | region IA can be prevented, compared with the conventional condensing apparatus 60 which the said rotation arises, each reflection part 11 has efficient solar. It can be seen that the light can be collected on the heat receiving portion 12. Therefore, in the split linear Fresnel type concentrating device 10 of the present invention, sunlight is efficiently collected in the heat receiving unit 12 regardless of changes in season, position (distance) with respect to the heat receiving unit 12, and change in latitude. Can be light.

  Here, the result of comparing the efficiency of the light collector 10 and the light collector 60 is shown in the table of FIG. First, assuming that the width of the irradiation area IA is not taken into consideration, a tubular heat receiving body (heat receiving body) by reflected light from the reflecting mirror (the reflecting portion 11 or the reflecting portion 61) in consideration of the rotation angle θa of the irradiation area IA (irradiation pattern). The irradiation efficiency to the part 12 or the heat receiving part 62) can be expressed by the following formula (1).

Irradiation efficiency ≒ (diameter of tubular heat receiving member) / {(length of reflecting mirror) x sin θa} (1)
Here, the length of the reflecting mirror is a length dimension of the reflecting portion 11 or the reflecting portion 61 in the initial state as viewed in a direction parallel to the heat receiving axis Ra of the tubular heat receiving body (the heat receiving portion 12 or the heat receiving portion 62). Yes, in the above-described example, the length is the length of the reflective portion 11 and the reflective portion 61 as viewed in the longitudinal direction. And as long as the irradiation area IA is long, this expression (1) can be used as an approximate expression for obtaining the irradiation efficiency. However, in this calculation, until the value of the denominator exceeds the value of the numerator, that is, when the denominator <the numerator, 100% is set.

  The size of the irradiation area IA in the width direction is considered to be equal to the diameter of the sun image. When the ratio of the diameter of the tubular heat receiving body (heat receiving section 12 or heat receiving section 62) to the width of the irradiation area IA is smaller than 1, that is, when the diameter of the tubular heat receiving body is smaller than the width of the irradiation area IA. Then, the correction coefficient corresponding to the ratio is multiplied by the calculated value according to the equation (1). In addition, as described above, in each reflecting mirror (the reflecting portion 11 or the reflecting portion 61), a cosine loss occurs with rotation around each rotation axis. For this reason, by multiplying the irradiation efficiency calculated by the equation (1) by the correction coefficient described above and the coefficient related to cosine loss, tubular heat receiving by a single reflecting mirror (the reflecting portion 11 or the reflecting portion 61) is performed. The irradiation efficiency to the body (heat receiving part 12 or heat receiving part 62) can be obtained.

Then, the light collecting device 10 and the light collecting device 60 are installed at a point of 35 degrees north latitude, and the amount of heat from the sun is 1 kW per 1 m ² of the horizontal plane. It is assumed that a predetermined range in which each of the reflecting mirrors (the reflecting portion 11 or the reflecting portion 61) is set is set, and the reflecting mirror is arranged so as to be most efficient in the range. “To be most efficient” means to occupy the range as much as possible by each reflecting mirror while avoiding interference due to shadows of adjacent reflecting mirrors. By integrating the irradiation efficiencies of the reflecting mirrors based on the arrangement area ratio of the reflecting mirrors (reflecting portions 11 or 61) arranged in this way, the light collecting device 10 and the light collecting device 60 as a whole are integrated. The total amount of heat used (kWh) is calculated. Moreover, the utilization efficiency of the sunlight as the whole in the condensing device 10 and the condensing device 60 from the utilization total calorie | heat amount (kWh) with respect to the solar total calorie | heat amount (kWh) of the solar heat poured over the whole predetermined range mentioned above. (%) Is calculated. FIG. 62 shows the values calculated in this way.

  In the table of FIG. 62, as the predetermined range, the tubular heat receiving body (the heat receiving portion 12 or the heat receiving portion 62 (its heat receiving axis Ra)) is used as a reference, and the size is 1 m when viewed in the east-west direction. The following two sizes are seen in the direction. The first is a size of 46 m with respect to the tubular heat receiving body as seen in the north-south direction from the south side 20 m (L = −20 m) to the north side 26 m (L = 26 m). Second, the tubular heat receiver has a size of 32 m when viewed in the north-south direction from the south side 6 m (L = −6 m) to the north side 26 m (L = 26 m). Here, with respect to the value of L, the north side (26 m) is set to be equal, and the south side is set to −20 m and −6 m in consideration of the arrangement position being 35 degrees north latitude. This is due to the wide arrangement of mirrors. In the table of FIG. 62, three conditions of summer solstice, spring equinox, and winter solstice are set as seasonal conditions as in the above-described graphs. In the table of FIG. 62, two operating time conditions are set. The first is that in each season, one hour after sunrise passes until one hour before sunset, and is listed in the upper part for each season. Secondly, in each season, the period is from 2 hours after sunrise until 2 hours before sunset, and is shown in the lower part of each season.

  Here, two predetermined ranges are set because the use efficiency of solar heat by the reflecting mirror decreases as the distance from the tubular heat receiving body to the reflecting mirror increases, whereas the larger the predetermined range, the whole apparatus. It is because the utilization total calorie | heat amount (kWh) obtained as can be increased. In addition, two operating time conditions were set because the usage rate (%) can be increased in the time zone with a higher solar altitude, while the total amount of heat that can be obtained by extending the operating time ( kWh) can be increased.

  As is apparent from the table of FIG. 62, the light collecting device 10 of the present invention is used regardless of the seasonal change, the difference in operation time, and the region where the reflecting mirror is arranged, as compared with the light collecting device 60. Both total heat (kWh) and utilization efficiency (%) can be increased. Here, in the condensing device 10 and the condensing device 60, the influence of the cosine loss in the reflecting mirrors arranged at the same position is almost the same, and other conditions are almost the same except for the presence or absence of the rotation of the irradiation region IA. Is. For this reason, in the condensing device 10, compared with the condensing device 60, since rotation of the irradiation area | region IA can be prevented, both utilization total calorie | heat amount (kWh) and utilization efficiency (%) can be enlarged. It is thought that it was made. In particular, in the light collecting device 10, when the region where the reflecting mirror is arranged is increased in the north-south direction from the comparison of the values under the conditions of two predetermined ranges, the total heat amount and the utilization efficiency of the light collecting device 60 are increased. The difference can be increased. From this, it can be seen that the greater the distance from the tubular heat receiving body to the reflecting mirror, the greater the effect of improving the total amount of heat used and the efficiency of use by preventing the irradiation area IA from rotating. For this reason, in the condensing device 10, even if the area | region which arrange | positions a reflective mirror is enlarged in the north-south direction by preventing rotation of the irradiation area | region IA, sunlight can be utilized with high efficiency. Thereby, in the condensing device 10, in order to improve the utilization total heat amount per unit length seen in the heat receiving axis line Ra direction in the tubular heat receiving body (the heat receiving part 12 or the heat receiving part 62), in the direction orthogonal to the heat receiving axis line Ra. Even if the length dimension of is increased, high utilization efficiency can be maintained. Therefore, in the condensing device 10, by increasing the length dimension in the direction orthogonal to the heat receiving axis Ra, high utilization efficiency can be obtained while improving the total utilization heat amount.

  In addition, from the table of FIG. 62, in terms of utilization efficiency, in the equinox or winter solstice where the altitude of the sun is low, the smaller the area where the reflector is placed, the higher, and the shorter the operation time, regardless of the season, the higher. . This is because the arrangement of the reflecting mirrors on the south side is narrowed and the arrangement of the reflecting mirrors is widened on the north side, considering that the installation position is a point at 35 degrees north latitude. However, when viewed in terms of the total amount of heat used, regardless of the season, the larger the region where the reflector is placed, the higher the region, and the longer the operation time, the higher. For this reason, it is difficult to determine which one is better based only on the utilization efficiency in view of restrictions on the total amount of heat used and the operating time. Therefore, the table in FIG. 62 shows the total amount of heat used and the utilization efficiency. ing.

  From this, in the condensing apparatus 10 of the Example which concerns on this invention, even if each reflection part 11 is rotated around the corresponding 1st rotating shaft 13, the heat receiving part 12 (its irradiated surface) as an irradiated part It is possible to prevent the irradiation area IA formed in the above from rotating with respect to the heat receiving axis Ra (irradiated axis). In the condensing device 10, the first rotating shaft 13 of each reflecting portion 11 includes the heat receiving axis Ra (irradiated axis) of the heat receiving portion 12 (irradiated portion) and the center position C in each reflecting portion 11. This is because the line segment is orthogonal to one plane P1 and passes through the center position C.

  Moreover, in the condensing apparatus 10, even if each reflection part 11 is rotated around the 2nd rotating shaft 14, it can prevent that the irradiation area | region IA formed in the heat receiving part 12 (its irradiation surface) rotates. . In the condensing device 10, the second rotating shaft 14 of each reflecting portion 11 is included in the first plane P <b> 1 (on the first plane P <b> 1) and passes through the center position C of the corresponding reflecting portion 11. It depends on the line segment.

  Furthermore, in the condensing device 10, even if each reflecting portion 11 is rotated around the corresponding first rotating shaft 13, the second rotating shaft 14 of each reflecting portion 11 is always included in the first plane P1 (the first plane P1). It can be a line segment passing through the center position C of the corresponding reflecting portion 11 on one plane P1. In the condensing device 10, the second rotation shaft 14 is orthogonal to the first rotation shaft 13 in each reflection unit 11, and rotates with the rotation of the reflection unit 11 around the first rotation shaft 13. By what you are going to do.

  In the condensing device 10, the irradiation area IA formed on the heat receiving portion 12 (its irradiated surface) rotates even if each reflecting portion 11 is appropriately rotated around the corresponding first rotating shaft 13 and second rotating shaft 14. This can be prevented. This is because the following two conditions must be satisfied. First, in the condensing device 10, the first rotation shaft 13 of each reflection unit 11 is set to the heat receiving axis Ra (irradiation axis) of the heat receiving unit 12 (irradiated unit) and the center position C in each reflection unit 11. The line segment is perpendicular to the first plane P1 and includes the center position C. Second, in the light collecting apparatus 10, the second rotation axis 14 of each reflecting portion 11 is included in the first plane P <b> 1 (on the first plane P <b> 1) and the corresponding center position C of the reflecting portion 11. It is assumed that the line passes through. In other words, in each reflecting portion 11, an axis perpendicular to the first rotation axis 13 (in the above-described embodiment, an axis extending through the center position C and extending in the longitudinal direction (non-condensing direction)) is always included in the first plane P1. Since the reflected light of sunlight is directed to the irradiated part (heat receiving part 12), the irradiation area IA can be prevented from rotating.

  In the condensing device 10, sunlight can always be efficiently collected on the heat receiving unit 12 even if each reflecting unit 11 is rotated around the first rotation axis 13 in accordance with a change in the position of the sun. This is because in the light collecting device 10, even if each reflecting portion 11 is rotated around the corresponding first rotating shaft 13 and second rotating shaft 14, the irradiation region IA formed on the heat receiving portion 12 (its irradiated surface) This is because it can be prevented from rotating.

  In the condensing device 10, the respective reflecting portions 11 are rotated around the first rotating shaft 13 and the second rotating shaft 14 in an appropriate manner in response to changes in the position of the sun, so that the efficiency can be constantly stabilized. Thus, sunlight can be condensed on the heat receiving portion 12. This is because in the light collecting device 10, even if each reflecting portion 11 is rotated around the corresponding first rotating shaft 13 and second rotating shaft 14, the irradiation region IA formed on the heat receiving portion 12 (its irradiated surface) This is because it can be prevented from rotating. For this reason, in the condensing device 10, the fluctuation | variation of the solar energy (thermal energy) obtained between the time in the south and the morning and evening when the altitude of the sun is low can be further reduced.

  In the condensing device 10, sunlight can be efficiently condensed on the heat receiving unit 12 even in a scene where the rotation angles around the first rotation shaft 13 and the second rotation shaft 14 in each reflection unit 11 become large. . This is because, in the light collecting device 10, even if each reflecting portion 11 is rotated around the first rotating shaft 13 and the second rotating shaft 14 in response to the change in the position of the sun, the heat receiving portion 12 (its irradiated object). This is because the irradiation area IA formed on the surface) can be prevented from rotating.

  In the condensing device 10, the arrangement and size of each reflecting portion 11 and the arrangement and size of the heat receiving portion 12 are prevented from being restricted due to the setting of the first rotating shaft 13 and the second rotating shaft 14. be able to. This is because in the light collecting device 10, the first rotation shaft 13 and the second rotation shaft 14 are set for each reflection portion 11 according to the positional relationship of each reflection portion 11 with respect to the heat receiving portion 12. For this reason, in the condensing apparatus 10, since the fall of the efficiency by the position with respect to the heat receiving part 12 can be prevented, the range which can install each reflective part 11 on the basis of the heat receiving part 12 is expanded from a viewpoint of preventing the fall of efficiency. be able to. From this, in the condensing device 10, it is possible to increase the number of the reflecting portions 11 arranged in parallel in the north-south direction in each reflecting line Ln, and it is possible to obtain larger thermal energy.

  In the condensing device 10, the size of each reflecting portion 11 viewed in a direction parallel to the heat receiving portion 12 (its heat receiving axis Ra) can be set large from the viewpoint of efficiently condensing. This is because, in the light collecting device 10, the arrangement and size of each reflecting portion 11 and the arrangement and size of the heat receiving portion 12 are limited due to the setting of the first rotating shaft 13 and the second rotating shaft 14. Can be prevented. For this reason, in the condensing device 10, if the area | region for arrangement | positioning of the several reflection part 11 shall be equal, compared with other structures (for example, condensing device 60), the number of the reflection parts 11 will be reduced. However, the same light collecting performance can be obtained.

  In the condensing device 10, by setting the size dimension of the irradiation area IA formed by each reflecting portion 11 in accordance with the size dimension of the heat receiving unit 12 (its irradiated surface) from the viewpoint of efficiently collecting light, Regardless of the change in the position of the sun, the sunlight can always be collected more efficiently on the heat receiving portion 12. This prevents the irradiation area IA formed on the heat receiving portion 12 (its irradiated surface) from rotating in the light collecting device 10 even if each reflecting portion 11 is rotated around the corresponding first rotation axis 13. By being able to.

  In the light concentrator 10, the first rotary shaft stage 26 supports the second rotary shaft stage 25 so as to be rotatable around the first rotary shaft 13 (first axis) with respect to the first rotary shaft stage 26, and the The reflector 11 is supported by the second rotary shaft stage 25 so as to be rotatable around a second rotary shaft 14 (second axis) orthogonal to the first rotary shaft 13 with respect to the second rotary shaft stage 25. For this reason, in the condensing device 10, even if each reflection part 11 is rotated around the corresponding 1st rotating shaft 13 by simple structure, the 2nd rotating shaft 14 is contained in the 1st plane P1 (1st A line segment passing through the center position C of the corresponding reflecting portion 11 on one plane P1) can be maintained.

  In the condensing device 10, the second rotating shaft stage 25 is provided with a pair of support protrusions 25c so that the second rotating shaft stage 25 can be rotated, and the second rotating shaft stage 25 can be rotated. A pair of support holes 25d are provided to support each other, and their axis lines are orthogonal to each other at the center position C. In other words, a supported portion (a pair of support protrusions 25c) for supporting the second rotary shaft stage 25 so as to be rotatable about the first axis passing through the center position C of the reflecting portion 11 on the second rotary shaft stage 25. And a support portion (a pair of support holes 25d) for supporting the reflector 11 so as to be rotatable around a second axis that passes through the center position C of the reflector 11 and is orthogonal to the first axis. And in the condensing device 10, while making the axis line (1st axis line) of a pair of support protrusion 25c correspond to the 1st rotating shaft 13 set corresponding to the reflection part 11 which the 2nd rotating shaft stage 25 supports, the said A second rotary shaft stage 25 is provided so as to be rotatable around both support projections 25c (its axis). Then, in the light collecting device 10, the pair of support holes 25 d (its axis (second axis)) are always connected to the first rotating shaft 13 regardless of the rotation of the second rotating shaft stage 25 around the first rotating shaft 13. A line segment that is orthogonal and that passes through the center position C of the reflecting portion 11 held by the second rotating shaft stage 25 can be used. In other words, in the light collecting apparatus 10, the pair of support holes 25 d (its axis (second axis)) can be used as the second rotation shaft 14 of the reflecting portion 11 held by the second rotation shaft stage 25. For this reason, in the condensing device 10, even if each reflection part 11 is rotated around the corresponding 1st rotating shaft 13 by simple structure, the 2nd rotating shaft 14 is contained in the 1st plane P1 (1st A line segment passing through the center position C of the corresponding reflecting portion 11 on one plane P1) can be maintained.

  In the condensing device 10, by providing the heat receiving portion 12 with the heat receiving axis Ra parallel to the east-west direction, each reflecting portion 11 is rotated around the first rotating shaft 13 and the second rotating shaft 14 in accordance with changes in the position of the sun. Thus, the reflected light can be directed to the heat receiving unit 12 appropriately corresponding to the diurnal motion of the sun. For this reason, in the condensing apparatus 10, sunlight can be more efficiently condensed on the heat receiving part 12 from the morning where the solar altitude is low to the evening.

  In the condensing device 10, due to seasonal changes, even if the reflection modes of the reflecting portions 11 around the first rotation shaft 13 and the second rotation shaft 14 corresponding to the diurnal movement of the sun are different, It is possible to prevent the irradiation region IA from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra). For this reason, in the condensing apparatus 10, if it puts in more efficiently throughout the year, efficiency can be stabilized and sunlight can be condensed on the heat receiving part 12. FIG.

  In the condensing device 10, due to the change in the installation position, the manner of rotation of the reflecting portions 11 around the first rotation shaft 13 and the second rotation shaft 14 corresponding to the diurnal motion of the sun may be different. The irradiation area IA can be prevented from rotating with respect to the heat receiving portion 12 (its heat receiving axis Ra). For this reason, in the condensing device 10, it can prevent that an installation position is restrict | limited.

  In the light concentrating device 10, the rotation mechanism portion 26 f is provided on the first rotating shaft stage 26, and the support arm portion 26 a can rotate with respect to the connection leg portion 26 c, so that the position with respect to the heat receiving portion 12. Regardless, the same first rotating shaft stage 26 can be used. For this reason, in the condensing apparatus 10, since the 1st rotating shaft stage 26 and the 2nd rotating shaft stage 25 can be made shared by making each reflection part 11 mutually equal, the whole cost is reduced. be able to.

  In the condensing device 10, below the heat receiving part 12 as the irradiated part, the direction parallel to the heat receiving axis Ra (irradiated axis) and the direction orthogonal to the heat receiving axis Ra (irradiated axis) are parallel. A plurality of reflecting portions 11 are provided. For this reason, in the condensing device 10, the position with respect to the heat receiving part 12 of each reflection part 11 in each reflection line Ln can be made mutually equal. From this, in the condensing device 10, the rotation postures around the respective rotation axes that are adapted to the diurnal motion of the sun in the reflection portion 11 at the same position in the north-south direction are assumed to be equal to each other in the respective reflection lines Ln. be able to. That is, in the condensing device 10, the rotation postures around the respective rotation axes that are adapted to the diurnal motion of the sun in the respective reflecting portions 11 that are equal in the direction (north-south direction) orthogonal to the heat receiving axis Ra (irradiation axis) are equal. It can be. Therefore, in the condensing device 10, the angle setting (drive control for that) of each reflection part 11 can be made easy.

  In the condensing device 10, a large-scale solar condensing facility can be easily constructed by connecting a plurality of end portions of the respective heat receiving units 12 and providing them. This is because, in the light collecting device 10, when viewed in a direction parallel to the heat receiving axis Ra, both end portions of the heat receiving portion 12 extend outward from the locations where the reflecting portions 11 are provided. .

  In the condensing device 10, since the irradiation area IA is prevented from rotating, the heat receiving axis line is improved in order to improve the total amount of heat used per unit length viewed in the direction of the heat receiving axis line Ra in the irradiated part (heat receiving part 12). Even when the length dimension in the direction orthogonal to Ra is increased, high utilization efficiency can be maintained. For this reason, in the condensing apparatus 10, high utilization efficiency can be obtained, improving the total utilization calorie | heat amount by increasing the length dimension in the direction orthogonal to the heat receiving axis line Ra.

  Since the solar thermal power generation device 30 includes the light concentrating device 10, each effect described above in the light concentrating device 10 can be obtained. For this reason, in the solar thermal power generation device 30, by using the heat acquired from the sunlight condensed on the heat receiving unit 12 by the light collecting device 10, the solar energy (thermal energy) is efficiently used. Electric power can be generated (power generation).

  The solar thermal power generation apparatus 30 uses the heat acquired by the heat receiving unit 12 to be more efficient throughout the day regardless of the season and the change in the installation position. In other words, the efficiency is stabilized and solar energy (thermal energy) is used. Power can be generated (power generation). This is because the solar thermal power generation apparatus 30 includes the condensing device 10 that can more efficiently collect sunlight on the heat receiving unit 12 throughout the year regardless of the change in the installation position.

  Since the solar thermal power generation device 30 includes the light collecting device 10 that can easily construct a large-scale solar light collecting facility, the solar power generating device 30 can be easily made into a large-scale solar power generation facility.

  Therefore, in the condensing apparatus 10 of the Example which concerns on this invention, sunlight can be efficiently condensed on the heat receiving part 12 as an irradiated part.

  In the above-described embodiment, the light collecting apparatus 10 as an example of the light collecting apparatus according to the present invention has been described. However, a plurality of light that can be rotated about the first rotation axis and can be rotated about the second rotation axis. A reflecting portion, and a irradiated portion that is irradiated with reflected light from each of the reflecting portions and is elongated in a direction in which a set irradiated axis extends, and the first rotation axis is provided for each reflecting portion. The second axis of rotation is included in the first plane for each of the reflecting sections, and is a line segment that is orthogonal to the first plane including the center position of the irradiated axis and the corresponding reflecting section and passes through the center position. A line segment passing through the central position of the corresponding reflecting portion, and each reflecting portion is configured to irradiate the irradiated portion with reflected light reflecting sunlight. Any concentrator that rotates about two rotation axes may be used. It is not limited to the examples.

  In the above-described embodiment, the heat receiving portion 12 as the irradiated portion is provided along the heat receiving axis Ra as the irradiated axis along the east-west direction (in parallel with the east-west direction). However, as long as the following two conditions are satisfied, the extending direction of the heat receiving portion 12 (heat receiving axis Ra) may be set as appropriate, and is not limited to the above-described embodiment. The first condition is that the first rotating shaft 13 is a line segment that is orthogonal to the first plane P1 including the heat receiving axis Ra of the heat receiving part 12 and the center position C in each reflecting part 11 and passes through the center position C. That is. The second condition is that the second rotation axis 14 is a line segment that is included in the first plane P1 (on the first plane P1) and that passes through the center position C of the corresponding reflecting portion 11.

  Furthermore, in the above-described embodiment, the heat receiving portion 12 is provided as the irradiated portion in the light collecting apparatus 10. However, as long as the irradiated part satisfies the following conditions, the solar battery 41 which is a power device that directly converts sunlight (its light energy) into electric power instead of the heat receiving part 12 as shown in FIG. The light collecting device 10 ′ may be provided, and is not limited to the above-described embodiment. The condition is that the solar energy collected by each reflecting portion 11 is provided to be used. In FIG. 63, the solar power generation device 40 configured to include the condensing device 10 ′ is shown. The solar cell 41 uses solar energy by receiving light when the reflected light from each reflecting portion 11 is irradiated. In the solar power generation device 40, since the irradiated portion of the light collecting device 10 ′ is the solar cell 41, the circulating pipe 31, the turbine 32, the generator 33, and the aggregator 34 ( 1), the electric power can be generated using solar energy (its light energy). For this reason, in the solar power generation device 40, the output line 42 is provided in the solar cell 41 of the condensing device 10 '. The output line 42 is connected to the power distribution path, and can output the power generated (generated) by the solar cell 41 to the power distribution path. The condensing device 10 ′ has the same configuration as the condensing device 10 except that the heat receiving unit 12 is replaced with the solar battery 41. Thus, the solar power generation device 40 is a power generation device that generates (generates) electric power using solar light energy among solar power generation devices that generate electric power from solar energy. Even in the case where the solar power generation device 40 is configured in this manner, it is not desirable to increase the size of the irradiated portion because the solar cell 41 is increased. For this reason, in the solar power generation device 40, even if each reflection part 11 is rotated around the corresponding 1st rotating shaft 13 like the condensing apparatus 10 mentioned above, the irradiation area | region formed in the heat receiving part 12 (irradiation part) By preventing the IA from rotating with respect to the heat receiving axis Ra (irradiated axis), even if each reflecting portion 11 is rotated around the first rotation axis 13 according to a change in the position of the sun, the sun is always efficiently Since light can be condensed on the heat receiving unit 12, electric power can be generated (power generation) efficiently using solar energy. When the solar power generation device 40 is configured in this way, it is desirable to provide a mechanism for cooling the solar cell 41 in order to prevent a decrease in energy conversion efficiency in the solar cell 41.

  In the embodiment described above, the second rotary shaft stage 25 is supported by the first rotary shaft stage 26 so as to be rotatable around the first rotary shaft 13 (first axis) with respect to the first rotary shaft stage 26, and The reflector 11 is supported by the second rotary shaft stage 25 so as to be rotatable around a second rotary shaft 14 (second axis) orthogonal to the first rotary shaft 13 with respect to the second rotary shaft stage 25. However, as long as the following two conditions are satisfied, the second rotary shaft stage 25 and the first rotary shaft stage 26 may not be used, and the configuration is not limited to the above-described embodiment. The first condition is that the first rotating shaft 13 is a line segment that is orthogonal to the first plane P1 including the heat receiving axis Ra of the heat receiving part 12 and the center position C in each reflecting part 11 and passes through the center position C. That is. The second condition is that the second rotation axis 14 is a line segment that is included in the first plane P1 (on the first plane P1) and that passes through the center position C of the corresponding reflecting portion 11.

  In the above-described embodiment, the pair of support protrusions 25c are provided on the second rotating shaft stage 25. However, the second rotating shaft stage 25 is rotatable around the first axis passing through the center position C of the reflecting portion 11 to be supported. As long as a supported location for supporting the substrate is provided, the configuration is not limited to the above-described embodiment.

  In the embodiment described above, the pair of support holes 25d are provided in the second rotating shaft stage 25. However, the reflecting portion is rotatable around the second axis passing through the center position C of the reflecting portion 11 and orthogonal to the first axis. 11 may be provided as long as a support portion for supporting the support 11 is provided, and the configuration is not limited to the above-described embodiment.

  In the embodiment described above, the second rotary shaft stage 25 is supported by the first rotary shaft stage 26. However, as long as the following two conditions are satisfied, the first rotating shaft stage 26 may not be used, and is not limited to the configuration of the above-described embodiment. The condition is that the first axis passing through the center position C of the reflecting portion 11 is matched with the first rotating shaft 13 set corresponding to the reflecting portion 11 supported by the second rotating shaft stage 25, and the first axis The second rotating shaft stage 25 is supported at a supported position so as to be rotatable around.

  In the above-described embodiment, each reflecting portion 11 that is curved in one direction (short direction) and formed by a flat mirror in the other direction (long direction) is used, but as shown in FIG. It may be a condensing device 10 ″ using each reflecting portion 11 ′ formed by a flat mirror having a rectangular shape when viewed in the normal direction, and is not limited to the above-described embodiment. This condensing device 10 ″ has the same configuration as that of the condensing device 10 except that each reflecting portion 11 is each reflecting portion 11 ′.

  In the above-described embodiment, each reflecting portion 11 is curved in one direction (short direction) and formed in a flat mirror in the other direction (long direction), and has a rectangular shape when viewed in the normal direction. However, the irradiation area IA formed in the heat receiving portion 12 (irradiated portion) as the irradiated portion when each reflecting portion 11 is rotated around the corresponding first rotation axis 13 is the heat receiving axis Ra (irradiated axis). If the aspect of the irradiation area IA in the heat receiving portion 12 (its irradiated surface) changes by rotating with respect to the shape, the shape seen in the normal direction may be set as appropriate, and is limited to the above-described embodiment. Is not to be done.

  In the above-described embodiment, each reflecting portion 11 is supposed to form the irradiation region IA along the direction in which the heat receiving axis Ra (irradiated axis) extends in the heat receiving portion 12 (irradiated portion). The solar image may be formed on the heat receiving portion 12 and is not limited to the above-described embodiment.

  In the embodiment described above, the irradiated portion is a heat receiving portion 12 that is long in the direction of the irradiated axis (heat receiving axis Ra), and straddles a plurality of reflection lines Ln (four rows (n = 1 to 4 in the example of FIG. 1)). However, it is possible to prevent the irradiation area IA formed in the irradiated portion from rotating with respect to the irradiated axis when each reflecting portion 11 is rotated around the corresponding first rotation axis 13. As long as the effect can be obtained, the shape may be the same as the irradiation area IA formed by each reflecting portion 11 and is not limited to the above-described embodiment.

  In the above-described embodiment, each reflection portion 11 forms a plurality of reflection lines Ln (four rows (n = 1 to 4 in the example of FIG. 1)) when viewed in the east-west direction, and the north-south direction in each reflection line Ln. A plurality (9 in the example of FIG. 1) are provided in parallel. However, if each reflection part 11 irradiates a to-be-irradiated part (heat receiving part 12 in an Example) with the reflected light which reflected sunlight, an installation position should just be set suitably and it is limited to an above-described Example. Is not to be done.

In the above-described embodiment, the heat receiving portion 12 as the irradiated portion has a hollow tubular shape (cylindrical shape) with a circular cross section. However, it is only necessary to receive heat when the reflected light from each reflecting portion 11 is irradiated, and the configuration is not limited to the above-described embodiment. As another configuration, for example, a heat insulating member may be provided above a cylindrical pipe member (heat receiving portion 12) that circulates the heat medium, and the pipe member or a heat collecting pipe 15 described later (FIG. 65). A compound parabolic trough mirror (CPC = Compound Parabolic Concentrator) may be provided to collect light on the light source (see FIG. 5). Other configurations will be described with reference to FIG. 65 includes a plurality of heat collecting pipes 15, a heat insulating outer wall 16, and a heat absorbing net 17. Each of the heat collecting pipes 15, the heat insulating outer wall 16, and the heat absorbing net 17 have the same configuration over the entire length of the heat receiving portion 12 extending in the east-west direction. Each of the heat collecting pipes 15 is a pipe (tube) formed of a material such as stainless steel, and both ends viewed in the east-west direction are connected to a circulation pipe 31 (see FIG. 1) described later. Each heat collecting pipe 15 is filled with a heat medium (air, steam, etc.), and forms a path for circulating the heat medium in cooperation with the circulation pipes 31 connected to both ends. A CO ₂ gas (carbon dioxide gas) is an example of a heat medium that is filled and circulated in each heat collecting pipe 15. In the example shown in FIG. 65, six heat collecting pipes 15 are provided in parallel. Each of the heat collecting pipes 15 is heated by being irradiated with the reflected light from each reflecting portion 11, and the heat medium is heated by transferring (moving) the heat to the heat medium so that the temperature of the heat medium is increased. Raise. And each heat collecting pipe 15 (heat receiving part 12) circulates the heat medium which raised temperature by cooperation with circulation pipe 31, and supplies it to turbine 32 (refer to Drawing 1). The heat insulating outer wall 16 is formed of a material having a function of blocking heat. The heat insulating outer wall 16 has an arc shape in cross section, and is provided so as to cover the top of each heat collecting pipe 15 so as to span all the heat collecting pipes 15. In the heat insulating outer wall 16, both side edge portions 16 a which are both ends seen in the north-south direction project downward from the heat absorption net 17 while passing through positions near the heat absorption net 17 (its edge). The heat absorption net 17 is provided on the inner side (lower side) of the heat insulating outer wall 16 so as to block the lower part of all the heat collecting pipes 15. The endothermic net 17 is configured to have a predetermined thickness dimension (a dimension as viewed in the vertical direction when FIG. 65 is viewed from the front) by forming the linear member in a cross-beam shape or a honeycomb structure. The endothermic net 17 can be formed, for example, by using a so-called stainless mesh using a linear member made of a stainless material. This heat absorption network 17 allows the reflected light from each reflecting portion 11 to pass and allows it to reach each heat collecting pipe 15, and radiated light (heat radiation) is on the inside (inside of the heat insulating outer wall 16). Thus, the heat collecting pipe 15 side) is prevented from coming out. If comprised in this way, in the heat receiving part 12, the convective heat loss resulting from an updraft occurring in the heat insulation outer wall 16 can be suppressed significantly. In the case of such a configuration, the heat receiving axis Ra may be the center axis of the heat receiving unit 12, the center position (center axis) of the heat absorbing net 17 irradiated with the reflected light from the reflecting unit 11, or the reflected light thereof. It is good also as a center position (center axis) of a plurality of heat collection pipes 15 which collect the heat.

  In the above-described embodiment, the center position C of each reflecting portion 11 is the center position in the reflecting portion 11, but the common center of rotation of each reflecting portion 11 around the first rotating shaft 13 and the second rotating shaft 14 is common. What is necessary is just to become a position, and is not limited to the above-described embodiment.

  As mentioned above, although the condensing apparatus of this invention, the solar thermal power generation apparatus using the same, and a solar power generation device have been demonstrated based on the Example, it is not restricted to an Example about a specific structure, The summary of this invention As long as they do not deviate, design changes and additions are permitted.

10, 10 ′, 10 ″ Condensing device 11, 11 ′ Reflecting unit 12, 12 ′ Heat receiving unit (as an example of the irradiated unit) 13 First rotating shaft 14 Second rotating shaft 25 Second rotating shaft stage 26 First rotary axis stage 27 Long side axis 28 (as an example of the second axis) 28 Short side axis 29 (as an example of the first axis) 29 Support mechanism part 41 (As an example of the irradiated part) Sun Battery C Center position P1 First plane Ra Heat receiving axis (as an example of irradiated axis)

JP 2010-286200 A

Claims (9)

A plurality of reflecting portions that are rotatable about the first rotation axis and rotatable about the second rotation axis;
Irradiated with the reflected light from each of the reflecting parts, and the irradiated part that is long in the direction in which the set irradiated axis extends,
The first rotation axis is a line segment that is orthogonal to the first plane including the irradiated axial line and the corresponding central position of the reflective part and passes through the central position for each reflective part;
The second rotation axis is a line segment that is included in the first plane and passes through the center position of the corresponding reflection part for each reflection part,
Each said reflection part is rotated about the said 1st rotating shaft and the said 2nd rotating shaft so that the said to-be-irradiated part may be irradiated with the reflected light which reflected sunlight.   2. The light collecting device according to claim 1, wherein the second rotation shaft rotates around the first rotation axis in accordance with rotation of the corresponding reflection unit around the first rotation axis. The light collecting device according to claim 1 or 2,
A plurality of support mechanism parts for individually supporting each of the reflection parts;
Each of the support mechanism units includes a second rotation axis stage that supports the corresponding reflection unit so as to be rotatable about the second rotation axis, and the second rotation axis about the first rotation axis of the corresponding reflection unit. And a first rotating shaft stage that rotatably supports the stage.   2. Each of the reflecting parts is provided below the irradiated part in parallel in a direction parallel to the irradiated axis and in a direction orthogonal to the irradiated axis. The condensing device according to any one of claims 3 to 4.   The said irradiation axis is set along the east-west direction, The condensing device of any one of Claims 1-4 characterized by the above-mentioned.   Each of the reflecting portions causes sunlight to travel by reflecting light from the center position on a reflected light path that is an intersection line of the second plane and the first plane that includes the center position and is orthogonal to the irradiated axis. The rotation according to any one of claims 1 to 5, wherein the irradiated portion is rotated around the first rotation axis and the second rotation axis so as to irradiate the irradiated portion with reflected light. Concentrator.   Each said reflection part has the effect | action which condenses in the direction orthogonal to the said to-be-irradiated axis line, The condensing apparatus of any one of Claims 1-6 characterized by the above-mentioned.   8. The device according to claim 1, wherein the irradiated portion has a hollow tubular shape with a circular cross section, and receives or receives heat when reflected light from each of the reflecting portions is irradiated. The light collecting device described in 1. A plurality of reflecting portions that are rotatable about the first rotation axis and rotatable about the second rotation axis;
An irradiated portion that is irradiated with reflected light from each of the reflecting portions;
A plurality of support mechanism parts for individually supporting the reflection parts,
Each of the support mechanism units supports a second rotating shaft stage that supports the corresponding reflecting unit so as to be rotatable about a second axis, and a first rotation that supports the second rotating shaft stage so as to be rotatable about the first axis. An axis stage, and
The first rotating shaft stage is orthogonal to a first plane including a center position of the reflecting portion supported via the second rotating shaft stage and an irradiated axis set in the irradiated portion, and the central position is By making the first axis line coincide with the line segment that passes through, the first axis line becomes the first rotation axis in the corresponding reflecting portion,
The second rotation axis stage is supported by the first rotation axis stage having the first axis as the first rotation axis in the corresponding reflecting portion so as to be rotatable around the second axis, thereby A condensing device characterized in that two axes are the second rotation axes of the corresponding reflecting portions.