JP4655313B2 - Solar concentrator - Google Patents

Description

  The present invention relates to a sunlight collecting device that collects sunlight.

Conventionally, as this type, a condensing lens, a heating body provided at the focal position of the condensing lens, and a moving means for moving the condensing lens around the heating body are provided. There exists a condensing device (for example, patent document 1) which collects solar heat and heats a heating body with the condensing lens which moves a condensing lens toward the sun, and rotates centering on a heating body.
Moreover, as an apparatus which condenses and uses solar heat, there exists a thing which provides a stove in the condensing point of a parabolic mirror, and heats this stove using solar energy (for example, patent document 2).
JP 2002-310515 A Japanese Utility Model Publication No. 6-32966

  In the condensing device of Patent Document 1 above, sunlight can be collected by a condensing lens and a heating body attached to the condensing lens can be heated. However, in order to use the heat of a heating body such as a pipe In addition, water must be passed through the heating body and pumped by a pump, and the heat energy obtained by a plurality of light collecting devices could not be efficiently collected and utilized.

  The present invention has been made paying attention to the above-mentioned problems, and is a collection of sunlight that can efficiently utilize solar energy by collecting light obtained by a plurality of light collecting means in a light collecting section. An object is to provide an optical device.

  In order to achieve the above object, the present invention includes a plurality of light collecting means for collecting sunlight, a light incident part for receiving sunlight collected by the light collecting means, and the light incident part. A light collecting light guide path in which a plurality of light guiding paths are gathered, and a light collecting portion provided on the terminal side of the light collecting light guide path.

  In the present invention, in order to achieve the above object, the light guide path is a pipe line whose inner surface forms a mirror surface.

  In order to achieve the above object, according to the present invention, the pipe is a stainless steel pipe, and the inner surface of the pipe is mirror-finished.

  Moreover, in order to achieve the said objective, this invention joins the said several light guide path corresponding to the said several condensing means in front of the said light gathering part.

In order to achieve the above object, the present invention further comprises posture control means for changing the direction of the light collecting means in accordance with the position of the sun, and the posture control means is connected to the light guide path. And a rotation driving means for rotating the light guide path on the tip side from the connecting rotation section, and the light collecting means is fixed to the light incident section side of the light guide path .

  According to the first aspect of the present invention, the sunlight obtained by the plurality of light collecting means can be efficiently collected by collecting it in the light collecting portion on the terminal side through the light guide.

According to the first aspect of the present invention, the light incident on the light guide from the light incident portion is guided to the light collecting portion on the terminal end side while being reflected by the mirror-like inner surface.

According to the invention of claim 1, a predetermined strength can be obtained by the stainless steel pipe, and the inner surface can be mirror-finished to form a light reflecting surface.

According to the first aspect of the present invention, the sunlight collected by the plurality of light collecting means can be merged and sent to the light collecting section on the terminal side, and the configuration of the light guide path can be simplified.

According to the invention of claim 1 , it is possible to efficiently collect light by matching the direction of the light collecting means with the position of the sun.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each of the embodiments, an unconventional sunlight condensing device is obtained by adopting a sunlight condensing device different from the conventional one, and the sunlight condensing device is described respectively.

  Embodiment 1 of the protector according to the present invention will be described below with reference to FIGS. The sunlight condensing device 1 includes a plurality of parabolic reflectors 2 that are light condensing means, and the light guide 4 includes a light incident portion 3 into which sunlight condensed by the reflected light 2 enters. The light incident part 3 is on the sun side of the reflecting mirror 2. The light guide 4 is made of a stainless steel pipe or the like, and includes a mirror-like inner surface 6 having a mirror-finished inner surface. If the light guide 4 is a stainless steel pipe, the mirror-like inner surface 6 is formed by mirror-finishing the inner surface using an abrasive or the like. The light incident part 3 is located at the condensing point of the reflecting mirror 2. In addition, the inner surface may be subjected to a heat reflection process of reflecting heat using a heat reflecting material or the like together with a mirror finish. Note that the reflecting mirror 2 is fixed to the light incident portion 3 side of the light guide 4 by an attachment member (not shown), and the reflecting mirror 2 faces the Z direction and reflects sunlight toward the light incident portion 3. .

  In this example, three reflecting mirrors 2, 2, 2 are used, and light guide paths 4, 4, 4 are provided corresponding to the respective reflecting mirrors 2, 2, 2. And the heat storage body 7 which is a light gathering part. As this heat storage body 7, the metal etc. which were excellent in heat storage property can be used.

  As shown in FIG. 1, the light guide 4 includes a plurality of straight portions 5A and elbow tubes 5B that are curved portions, and the straight portions 5A are straight tubes 5X, 5Z, and 5, and the curved portions 5B are elbows. This elbow tube is bent in a curved shape with the bending center as the center. In FIG. 1, an elbow pipe bent at 90 degrees is shown. Further, a deformed pipe (shrimp pipe) may be used instead of the elbow pipe. The X direction is the horizontal direction, and the Z direction is the vertical direction.

  Specifically, the light guide path 4 connects the X-direction straight pipe 5X and the Z-direction straight pipe 5Z with the elbow pipe 5B of 90 degrees, and a short Z-direction straight pipe is provided at the base end side of the X-direction straight pipe 5Z. The tube 5Z is connected by an elbow tube 5B of 90 degrees, and the light incident portion 3 is located at the base end of the short Z-direction straight tube 5Z. The end sides of the Z-direction straight tubes 5Z, 5Z, 5Z of the light guides 4, 4, 4 are connected to the base end of the light collecting light guide 4S, and the base end side of the light collecting light guide 4S is the terminal side. The Z-direction straight pipe 5Z of the light collecting light guide 4S is connected to the proximal end of the collective pipe 51, and the Z-direction straight pipe 5Z and the heat storage body 7 are connected to the base end of the collective pipe 51. Are connected by an elbow pipe 5B and a straight pipe 5.

  A connecting rotation portion 12X is provided in the X-direction straight tube 5X of the light guide path 4, and a distal end side of the connection rotation portion 12X is rotatably provided by the rotation driving means 13X, and is connected to the Z-direction straight tube 5Z. A rotation part 12Z is provided, and the distal end side of the connection rotation part 12Z is provided so as to be rotatable by a rotation drive means 13Z.

  In addition, posture control means 11 for directing the reflecting mirror 2 toward the sun S is provided, and the posture control means 11 includes control means 15 for controlling the driving of the rotation driving means 13X and 13Z. Note that the Z-direction straight pipe 5 </ b> Z on the end side from the connecting rotation portion 12 </ b> Z is fixedly provided, and the end side is connected to the heat storage body 7.

  The posture control means 11 is constituted by a part of the rotation drive means 13X and 13Z, the light guide path 4, and the light collecting light guide path 4S. Further, the leading end side and the three light guide paths 4, 4 and 4 are integrally provided with respect to the connecting rotation portion 12Z of the light collecting light guide path 4S. Therefore, when the rotation driving means 13Z is driven, the three light guide paths 4, 4, and 4 on the tip side of the rotation driving means 13Z rotate integrally around the connecting rotation portion 12Z.

  As the rotation driving means 13X, a step motor or the like that moves the distal end side 17 from the rotation connecting portion 12X at an equal angle around the axis of the X-direction straight pipe 5X is used. The rotational drive means 13X is driven and controlled so that the position of the sun S for each time is stored and the reflecting mirror 2 is rotationally driven. Thereby, the direction of the reflecting mirror 2 can be adjusted so that the reflecting mirror 2 faces the sun S.

  Further, as the rotation driving means 13Z, a step motor or the like that moves the tip side from the rotation connecting portion 12Z at an equal angle around the axis of the Z-direction straight pipe 5Z is used, and the control means 15 is used. The rotation driving means 13Z is driven and controlled so that the reflecting mirror 2 is tilted depending on the location.

  That is, the reflecting mirror 2 is directed in the direction of the sun S by the rotation driving means 13Z, and the angle with respect to the plane of the reflecting mirror 2 is adjusted to the elevation angle of the sun by the rotation driving means 13X.

  The control means 15 is connected to an input means 16 such as a touch panel or a keyboard for inputting the date data to be used. The input means 16 can input the date data. The latitude and longitude data of the place of use can be input. Based on the data of the place of use and the data of the day, the control means 15 reflects the reflection so that the reflecting mirror 2, which is a condensing means, always faces the sun S. Move the mirror 2.

  Next, the operation of the above structure will be described. The sunlight is collected by the reflecting mirror 2, and the collected light enters the light guide tube 4 from the light incident portion 3, and the mirror-like inner surface 6. While being reflected, the light enters the heat storage body 7 on the end side and heats the heat storage body 7. In this case, the light collected by the plurality of reflecting mirrors 2, 2, and 2 is collected by the collecting pipe 51 and enters the heat storage body 7 through the light collecting light guide 4S. The heat storage body 7 can be heated by collecting. Thus, the heat storage body 7 can be heated by the energy obtained from sunlight, and the heat of the heat storage body 7 can be utilized. For example, water can be heated by the heat of the heat accumulator 7, steam can be generated, or solar energy can be used as illumination light.

  As described above, in this embodiment, the reflecting mirrors 2 and 2 as a plurality of condensing means for collecting sunlight, the light incident portions 3 and 3 into which the sunlight collected by the reflecting mirrors 2 and 2 enters, Light guides 4, 4 to which the light parts 3, 3 are connected, a light collective light guide 51 in which a plurality of light guides 4, 4 are gathered, and a heat storage body that is a light gathering part provided on the terminal side of the light collective light guide 51 7, the sunlight obtained by the plurality of reflecting mirrors 2, 2 can be efficiently collected by gathering in the heat storage body 7 on the terminal side through the light guide path 4. In this example, three light guides 4 are provided independently.

  Further, in this embodiment, since the inner surface of the light guide 4 is a mirror surface, the light incident on the light guide 4 from the light incident part 3 is reflected on the mirror inner surface 6. Then, it is guided to the heat storage body 7 which is the light collecting part on the terminal side.

  In this way, in this embodiment, the pipe is a stainless steel pipe, and the inner surface of the pipe is mirror finished, so that a predetermined strength is obtained by the stainless steel pipe, and the inner surface is mirror finished. A light reflecting surface can be formed.

As described above, in this embodiment, the posture control means 11 is provided to change the direction of the reflecting mirror 2 as the light collecting means in accordance with the position of the sun S. The posture control means 11 is connected to the connection circuit provided in the light guide path 4. A moving portion 12X and a rotation driving means 13X for rotating the light guide path 4 on the distal end side from the connecting rotation section 12X are provided, and the reflecting mirror 2 as a light condensing means is fixed to the light incident section 3 side of the light guide path 4 since the that the orientation of the reflecting mirror 2 in accordance with the position of the sun S, can be efficiently condensed.

  FIG. 3 shows a second embodiment of the present invention, in which the same reference numerals are assigned to the same parts as in the first embodiment, and detailed description thereof is omitted. In this example, the condensing means is a condensing lens. 8, the light incident part 3 is on the anti-sun side of the condenser lens 8, the focal point of the condenser lens 8 is adjusted to the light incident part 3, and it corresponds to a plurality of condenser lenses 8, 8. A plurality of light guides 4 and 4 are provided. In addition, the condensing lens 8 is being fixed to the front end side of the light guide 4 with the attachment member which is not shown in figure.

  And also in this example, the condensing lens which can collect the light condensed by the several condensing lenses 8 and 8 and can heat the thermal storage body 7, and is a several condensing means which condenses sunlight. 8 and the light incident part 3 into which sunlight collected by the condenser lens 8 enters, and the inner surface of the light guide 4 is the mirror-like inner surface 6, and thus the same operations and effects as in the first embodiment are achieved. .

FIG. 4 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and detailed description thereof is omitted. In this example, the direction of the reflecting mirror 2 is set to the sun. Attitude control means 11 directed to S is provided. First, the light guide 4 includes an X-direction straight tube 5X, a Z-direction straight tube 5Z, and a Y-direction straight tube 5Y, and the straight tubes 5X, 5Z, and 5Y are connected by a 90-degree elbow tube 5B. A straight pipe 5Z in the Z direction is connected to the tip of the straight pipe 5X by an elbow pipe 5B of 90 degrees at the end of the light incident part 3 side. That is, adjacent straight pipes 5X, 5Z, and 5Y form an angle of 90 degrees. The X direction and the Y direction are directions orthogonal to each other on the plane, and the Z direction is a direction orthogonal to the plane. The X-direction straight pipe 5X is provided with a connecting rotation portion 12X, and the distal end side of the connection rotation portion 12X is provided so as to be rotatable by the rotation driving means 13X. the provided 12Z, is provided pivotably distal end side of the connecting pivot portion 12 Z by the rotation driving means 13Z. Further, the reflecting mirror 2 is attached to the X-direction straight pipe 5 </ b> X by an attachment member 14, and the reflecting mirror 2 faces the Z direction and reflects sunlight toward the light incident portion 3.

  Moreover, the control means 15 which controls the drive of the said rotation drive means 13X and 13Z is provided. In addition, the terminal side is fixedly provided from the connection rotation part 12Z, the terminal side is connected to a collecting pipe 51 (not shown), and the terminal pipes 4 are connected to the terminal side of the collecting pipe 51, The light collecting light guide 4 </ b> S is provided on the end side of the collecting pipe 51, and the end of the light collecting light guide 4 </ b> S is connected to the heat storage body 7.

  The posture control means 11 is composed of rotation drive means 13X and 13Z and a light guide path 4.

  As the rotation driving means 13X, a step motor or the like that moves the tip side 17 from the rotation connecting portion 12X at an equal angle around the axis (horizontal direction) of the X-direction straight pipe 5X is used. Controls the rotation driving means 13X so as to store the position of the sun S for each day and hour and to drive the reflecting mirror 2 to rotate. Thereby, the direction of the reflecting mirror 2 can be adjusted so that the reflecting mirror 2 faces the sun S.

  Further, as the rotation driving means 13Z, a step motor or the like that moves the tip side from the rotation connecting portion 12Z at an equal angle around the axis (vertical direction) of the Z-direction straight pipe 5Z is used. 15 drives and controls the rotation driving means 13Z so that the reflecting mirror 2 is tilted with respect to the angle θ between the orbital surface of the sun S and the horizontal surface on the ground.

  The control means 15 is connected to an input means 16 such as a touch panel or a keyboard for inputting the date data to be used. The input means 16 can input the date data. The latitude and longitude data of the place of use can be input. Based on the data of the place of use and the data of the day, the control means 15 reflects the reflection so that the reflecting mirror 2, which is a condensing means, always faces the sun S. Move the mirror 2.

  As described above, the present embodiment includes the reflecting mirror 2 as a plurality of condensing means for condensing sunlight and the light incident portion 3 into which the sunlight collected by the reflecting mirror 2 enters, and the inner surface of the light guide 4 Since this is the mirror-like inner surface 6, the same operations and effects as the first embodiment are achieved.

  Further, in this embodiment, since the posture control means 11 is provided to change the direction of the reflecting mirror 2 as the light collecting means according to the position of the sun S, the direction of the reflecting mirror 2 is adjusted to the position of the sun, It can collect light efficiently.

  FIG. 5 shows a fourth embodiment of the present invention, in which the same reference numerals are given to the same portions as the above-described embodiments, and detailed description thereof is omitted. In this example, in the X-direction straight pipe 5X, A confluence portion 21 is provided on the front end side of the connecting rotation portion 12X, confluence pipes 22 and 22 are provided on the front end of the confluence portion 21, and the front end sides 17 and 17 are attached to the front ends of the confluence pipes 22 and 22, respectively. . The straight tube on the tip side 17 is in the X direction. Therefore, in this example, two (a plurality) of light guide paths 4 are gathered and merged into one by the merging portion 21 on the side of the reflecting mirror 2 serving as the light collecting means.

  Therefore, when the distal end side is pivoted from the pivotal connecting portion 12Z and the distal end portion is pivoted from the pivotal connecting portion 12X by the pivotal driving means 13X, the two reflecting mirrors 2 and 2 are directed to the sun S, respectively. The light condensed by the two reflecting mirrors 2 and 2 enters the light guides 4 and 4 from the respective light entrances 3 and 3, merges at the junction 21, and becomes one light guide 4 from the branch 21. Then, the light enters the heat storage body 7 on the end side.

As described above, the present embodiment includes the reflecting mirror 2 as a plurality of condensing means for condensing sunlight and the light incident portion 3 into which the sunlight collected by the reflecting mirror 2 enters, and the inner surface of the light guide 4 Since this is the mirror-like inner surface 6, the same operations and effects as the first embodiment are achieved.
Further, in this embodiment, since the plurality of light guide paths 4 and 4 corresponding to the reflecting mirrors 2 and 2 as a plurality of condensing means are merged in front of the heat storage body 7 as a light collecting portion, the light guide path The configuration of 4 can be simplified.

  FIG. 6 shows a fifth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the reflecting mirror 2 serving as a condensing means is shown. A flat reflecting mirror 31 is provided at the condensing point, and an opening 32 is provided at the center of the reflecting mirror 2 corresponding to the reflecting mirror 31, and the light guide path is provided behind the opening 32. 4 light incident portions 3 are connected. That is, the front end of the light guide 4 is connected to the center of the rear part of the reflecting mirror 2 with respect to the reflecting mirror 2 into which sunlight enters from the front.

  As described above, the present embodiment includes the reflecting mirror 2 as a plurality of condensing means for condensing sunlight and the light incident portion 3 into which the sunlight collected by the reflecting mirror 2 enters, and the inner surface of the light guide 4 Since this is the mirror-like inner surface 6, the same operations and effects as the first embodiment are achieved.

  FIGS. 7 to 8 show Embodiment 6 of the present invention. The same reference numerals are given to the same parts as those in the above-described embodiments, and detailed description thereof will be omitted. A sensor 61 for directing the reflecting mirror 2 toward the sun S is provided. The sensor 61 includes a cylindrical main body 63 having an opening 62 at the tip, and the cylindrical main body 62 has a shape that expands from the opening 62 toward the bottom. None, a plurality of solar cells 65 are arranged on the bottom 64 in a grid pattern. In this example, nine solar cells 65 are arranged, and the central solar cell 65 is located at the axial center of the cylindrical main body 62 together with the opening 62.

  The sensor 61 is fixed to the distal end side 17 with the opening 62 facing the sun in the Z direction.

  Therefore, as shown in FIG. 8, when the sensor 61 faces the sun S, the sunlight R that has entered through the opening 62 hits the central solar cell 65, and the sunlight R shifts due to the movement of the sun S. The solar R hits the other solar cell 65 to generate an electromotive force, and the control unit 15 drives the rotation driving units 13Y and 13Z so that the electromotive force of the central solar cell 65 is maximized, Control is performed so that the reflecting mirror 2 which is a condensing means together with the sensor 61 faces the sun S.

  As described above, the embodiment provides the same operations and effects as the above embodiments. In this example, the attitude control means 11 includes the sensor 61 that tracks the moving sun S, so that the apparatus can be automated. it can.

In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible in the range of the summary of this invention. For example, in the embodiment, the heat storage body is exemplified as the light collecting portion. However, if the light collected by the plurality of light collecting means is collected, the light collecting portion may have another structure and illuminate the light emitted from the terminal side. You may use for .

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view which shows Example 1 of this invention. It is a block diagram same as the above. It is a front view of the principal part which shows Example 2 of this invention. It is explanatory drawing which shows Example 3 of this invention. It is explanatory drawing which shows Example 4 of this invention. It is a front view of the principal part which shows Example 5 of this invention. It is a front view of the principal part which shows Example 6 of this invention. FIG. 8 is a cross-sectional view taken along line AA in FIG.

1 Condenser 2 Reflector (Condenser)
DESCRIPTION OF SYMBOLS 3 Light entrance part 4 Light guide 4S Light gathering light guide 5 Pipe 6 Mirror surface inner surface 7 Heat storage body (light gathering part)
8 Condensing lens (Condensing means)
11 Attitude control means
12X, 12Z connection rotation part
13X, 13Z Rotation drive means S Sun θ Angle

Claims (1)

A plurality of light collecting means for collecting sunlight, a light incident part for receiving sunlight collected by the light collecting means, a light guide path to which the light incident part is connected, and a plurality of the light guide paths are gathered. In the sunlight condensing device comprising a light collecting light guide path and a light collecting portion provided on a terminal end side of the light collecting light guide path, the light guide path is a tube made of a stainless steel pipe whose inner surface is mirror-finished The plurality of light guide paths corresponding to the plurality of light collecting means are combined in front of the light collecting section, and include posture control means for changing the direction of the light collecting means in accordance with the position of the sun. ,
The posture control means includes a connecting rotation portion provided in the light guide path, and a rotation driving means for rotating the light guide path on the distal end side from the connection rotation section, and the light incident portion of the light guide path. A solar condensing device, characterized in that the condensing means is fixed to the side .

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