JP7182593B2 - collector - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat collector for capturing radiant energy composed of far infrared rays radiated from a heat source in closed spaces such as factories and computer rooms where heat tends to accumulate.

In addition to heat conduction in which heat is directly transferred inside a substance, there are phenomena such as convection and radiation in how heat is transferred. Of these, convection is a phenomenon in which heat is transferred by the flow of fluid. It is also used in air conditioners that use heat pumps, where temperature-controlled air is released into the room through the refrigerant that circulates between the indoor and outdoor units. , the temperature of the room is controlled by convection.

Radiation is a phenomenon in which electromagnetic waves carry heat. When the temperature of a substance rises, the energy of the electrons that make up the atoms and molecules of that substance becomes electromagnetic waves and is radiated as radiant energy. In particular, high-temperature substances have the property of strongly emitting far-infrared rays, which are electromagnetic waves with longer wavelengths than visible light, and these far-infrared rays have the property of causing a strong heat effect when they are absorbed by the object to be heated. Therefore, the radiant energy radiated from the high-temperature substance is converted into heat again, causing a heat transfer phenomenon.

By the way, in a room where there is a high temperature heat source such as a factory or computer room, part of the air that touches the heat source is directly heated by heat conduction, and a large amount of far infrared rays emitted from the heat source by the phenomenon of radiation Thermal effects absorbed by various heated objects, such as walls, also result in an increase in room temperature. Therefore, in such a room, it is essential to consider the cooling of the indoor space, such as considering the health of the people who work and preventing thermal runaway of various electronic devices. often try to cool the air in the space by convection using the aforementioned air conditioner. However, if the heat source in the room is of a considerably high temperature, cooling the entire room with an air conditioner would require a fairly powerful cooling facility and consume a large amount of power, making the cooling effect practically impractical. can be said to be limited.

Therefore, when such a high-temperature heat source exists in the room, rather than aiming to transfer heat by convection using an air conditioner as described above, the far-infrared rays, which are electromagnetic waves generated from the heat source, are directly captured and used to heat the heat source. If this radiant energy can be released to the outside, the heat effect that causes the room to rise can be reduced. I can say.

Far-infrared rays generated from a heat source are radiated in all directions in the room, and are radiated from random directions in the room because they are repeatedly diffusely reflected by walls and the like. Therefore, in order to directly capture such far-infrared rays, a technical means related to a heat collector capable of capturing far-infrared rays radiated from random directions is required.

Therefore, as a technical means for capturing such electromagnetic waves, for example, Patent Document 1 discloses that a light collecting plate forms a cylindrical light collecting cylinder, and light rays from all directions are collected on a light receiving body at the center of the light collecting cylinder. technique is described.

Japanese Patent Application Laid-Open No. 2008-203522

Examining the above prior art, the one described in Patent Document 1 is particularly intended for concentrating sunlight, but since sunlight is an electromagnetic wave containing various wavelengths, It is recognized that it is a technology that can be used for the application of a heat collector for far-infrared rays installed indoors.

However, the device described in Patent Document 1 is obtained by laminating countless number of rectifying units composed of transparent prisms having a complicated shape, so the manufacturing cost is considered to be considerably high. In addition, as long as a solid prism is used, a certain amount of weight is unavoidable, so it is thought that it is necessary to pay attention to the handling of optical equipment that is vulnerable to vibration, and it is necessary to easily handle it. It is not recognized that it can be installed or moved indoors at any time.

An object of the present invention is to solve the above problems. By using a film-like double-sided mirror sheet without using a solid prism, it can be manufactured easily and inexpensively, and is light in weight. To provide a heat collector which is characterized by being resistant to vibration during transportation and which can be easily installed and moved according to indoor conditions.

In the heat collector of the present invention, as a means for solving the above problems, a plurality of vertically elongated double-sided mirror films stretched in the vertical direction are arranged at equal intervals in the heat collection unit used in the heat collector. and a columnar heat collecting unit whose interior is partitioned into vertical slits by the plurality of double-sided mirror films, wherein the horizontal cross-sectional shape of the plurality of double-sided mirror films is a shape in which a plurality of circular arcs are provided symmetrically. , the arc length of each arc increases according to the distance from the central portion, and the radius of curvature of each arc is larger than the distance from the central portion.

Further, the heat collector of the present invention is a heat collector in which a plurality of the heat collection units are arranged inside a cylindrical housing and a vertically long heat absorption pipe is provided in the center, wherein the heat collection unit is characterized in that it is mounted at regular intervals on a plurality of concentric circles having different radii inside a cylindrical housing.

According to the problem-solving means of the present invention, since the heat collecting unit reflects heat with a lightweight material called double-sided mirror film, it can be manufactured easily and inexpensively, and is light in weight and resistant to vibration during transportation. can also be strengthened. In addition, since the double-sided mirror film has a horizontal cross-sectional shape with a plurality of symmetrical arcs that increase in curvature radius and arc length in proportion to the distance from the center, it efficiently guides far infrared rays. be able to.

In addition, a plurality of the heat collecting units are attached at regular intervals on the circumference of a plurality of concentric circles with different radii inside the cylindrical housing, so that far infrared rays are efficiently transferred to the central part. It can be guided to the body to collect heat.

As described above, the heat collector of the present invention can be manufactured easily and inexpensively by using a film-like double-sided mirror sheet without using a solid prism, and is light in weight and easy to transport. Since it has the feature of being strong against vibrations, it can exhibit an excellent effect that it can be easily installed and moved according to the indoor conditions.

1 is an external view of a heat collection unit that is an embodiment of the present invention; Layout of the double-sided mirror film in the same heat collection unit Diagram showing the reflection of far-infrared rays in the same heat collection unit Horizontal cross-sectional view of a collector that is an embodiment of the present invention External view of the same collector Overall configuration diagram of a heat collection system using the same heat collector

Hereinafter, the embodiments of the present invention will be described. First, FIG. 1 is an external view of a heat collecting unit 1 of the present invention. Two support plates 4 are provided vertically in parallel, and a plurality of double-sided mirror films 3 are stretched vertically in the space between them.

The heat collection unit 1 has a function of adjusting the traveling direction of the far-infrared rays irradiated to one end surface by the double-sided mirror film 3 and emitting them from the other end surface.

In particular, since the double-sided mirror film 3 used in the present invention is used by reflecting far-infrared rays on both the front and back sides, the front and back sides are subjected to aluminum vapor deposition processing, etc., which has the characteristic of having the highest possible reflectance of electromagnetic waves. It is necessary to cut it into a tape shape of the same length with a predetermined width in advance.

Further, the support plate 4 has a function of a structural member for mounting the double-sided mirror film 3 and curved in an arc shape. slits 5 are provided at regular intervals. Although the shape of the arcuate slit 5 differs depending on the mounting position of the double-sided mirror film 3, the top and bottom have the same shape at the same mounting position.

Then, by inserting the ends of the mirror films into the arc-shaped slits 5 and fixing them with an adhesive or the like, both ends of all the double-sided mirror films 3 are attached to the upper and lower support plates 4, When the upper and lower support plates 4 are pulled apart, the double-sided mirror film 3 curves along the arc-shaped slits 5 provided in the support plate 4, and maintains a horizontal cross-sectional shape that draws a uniform arc over the top and bottom. It will be stretched.

Next, the details of the horizontal cross-sectional shape of the double-sided mirror film 3 will be described. In the heat collection unit 1 of the present invention, the far infrared ray irradiated from the front front is allowed to pass backward as it is without obstructing the course as much as possible, and the far infrared ray irradiated from the front oblique direction is curved in an arc shape. This is intended to realize a function of reflecting the light on the double-sided mirror film 3 and changing the course as much as possible toward the rear side.

Therefore, a specific design method for the double-sided mirror film 3 that realizes the above functions will be described with reference to FIG. First, on the XY plane shown in A of FIG. 2, a semicircle with a radius α centered at the origin O is drawn downward, and then the center point is drawn in the positive direction on the X axis at equal intervals of α. Draw multiple moving semicircles. At that time, the radius of each semicircle is set to be (2αX+1) with respect to the X coordinate of the center point of each semicircle.

Then, for the plurality of semicircles drawn as described above, if the portion drawn in the negative direction of the X-axis is cut in a fan shape downward from the origin O, the upper end is perpendicular to the X-axis. A figure is obtained in which a plurality of circular arcs intersecting with are arranged at regular intervals of α. The characteristics of the fan-shaped figure are that the arc length of each arc increases according to the distance from the origin O, and the radius of curvature of each arc is (2αX+1) as described in the previous paragraph. Therefore, it is larger than the distance from the origin O.

Further, if the fan-shaped cut figure is rotated clockwise by about 5 to 10 degrees and copied symmetrically with respect to the Y-axis, two fan-shaped apex angles as shown in FIG. It is possible to obtain a symmetrical figure in which a plurality of circular arcs are arranged, forming an outer shape in which the parts are joined at the origin O of the central part. The figure is a horizontal sectional view of the double-sided mirror film 3 in the heat collection unit 1 of the present invention, and far infrared rays are incident from the front edge on the upper side to the rear edge on the lower side. Note that the circular arc closest to the center is omitted because it has little effect.

In the double-sided mirror film 3 having the horizontal cross-sectional shape as described above, as shown in FIG. While the mirror films 3 are arranged at intervals, the rear edges of the respective mirror films 3 are arranged in a divergent manner, with the distance gradually widening toward the rear edge. Further, the leading edge of each double-sided mirror film 3 is located forward as it moves away from the central portion, and the trailing edge is located rearward as it moves away from the central portion. Further, the leading edge side of each double-sided mirror film 3 is inclined slightly inward, while the trailing edge side is almost parallel to the Y-axis.

The heat collection unit 1 of the present invention is obtained by stretching the double-sided mirror film 3 having the horizontal cross-sectional shape designed as described above in the vertical direction as shown in FIG. A columnar heat collecting unit 1 in which a plurality of vertically long double-sided mirror films 3 stretched on a wall are arranged at equal intervals, and the interior is partitioned into vertical slits by the plurality of double-sided mirror films 3, and the plurality of The horizontal cross-sectional shape of the double-sided mirror film 3 has a shape in which a plurality of arcs are provided symmetrically, and the arc length of each arc increases according to the distance from the center, and the radius of curvature of each arc increases in accordance with the distance from the center. It is characterized by being larger than the distance from the part.

Next, how far infrared rays are reflected by the double-sided mirror film 3 in the heat collection unit 1 of the present invention will be described with reference to FIG.

First, as shown in FIG. 3A, when far-infrared rays are incident from the front toward the leading edge, most of the far-infrared rays pass straight to the trailing edge side as shown in FIG. However, if there is no double-sided mirror film 3 in the vicinity of the central part, or even if there is, the arc length of the double-sided mirror film 3 is short, so there is almost nothing to block and almost all far infrared rays are directed to the trailing edge side. pass by.

Further, as shown in (b) of FIG. 3A, since the arc length of the double-sided mirror film 3 at the outer position away from the central portion is longer, the far infrared rays are easily reflected by the outer curved surface of the double-sided mirror film 3. However, since the radius of curvature of the arc of the double-sided mirror film 3 located away from the central portion is large, the traveling direction thereof is only slightly deflected outward, and most of the far infrared rays are directed toward the trailing edge side. You can go straight.

Next, as shown in FIG. 3B, when the far-infrared rays are incident toward the inner curved surface side of the double-sided mirror film 3 at a certain angle, the center Some of the far-infrared rays pass through the double-sided mirror film 3 and pass outward in the vicinity of the part, but most of the far-infrared rays are reflected by the inner curved surface of the double-sided mirror film 3, and their course is directed toward the central part. and biased. The angle of reflection at that time is slightly smaller than the angle of incidence because the leading edge side of the double-sided mirror film 3 is slightly inclined inward.

Further, as shown in FIG. 3B (b), when the angle of incidence is remarkably large, almost all far-infrared rays are reflected by the inner curved surface of the double-sided mirror film 3. At 3, the reflected far-infrared rays are deflected as they are toward the central portion. Furthermore, in the double-sided mirror film 3 located outside the central portion, part of the far-infrared rays reflected on the inner curved surface is repeatedly reflected between the outer curved surface of the adjacent double-sided mirror film 3 and finally reaches the outer surface. Although some far-infrared rays are deflected toward the left, the trailing edge of the double-sided mirror film 3 is located rearward as it moves away from the central portion, and the spacing between the double-sided mirror films 3 forms a shape that widens toward the ends. Therefore, there is a high probability that the light is finally deflected toward the central portion at a reflection angle that is slightly smaller than the angle of incidence, and as a whole, the amount of far-infrared rays directed toward the rear of the central portion is greater. .

Furthermore, as shown in FIG. 3C, when the far infrared rays are incident on the outer curved surface of the double-sided mirror film 3 at a certain angle, there is a slight difference near the center as shown in FIG. 3C (a). Although the far-infrared rays of the part pass through the double-sided mirror film 3 and pass in the direction of the central part, the front edge of the double-sided mirror film 3 is located forward as it moves away from the central part, so most of the The far-infrared rays are reflected by the outer curved surface of the double-sided mirror film 3. - 特許庁Although there is a far infrared ray that is deflected outward by slightly increasing the angle of reflection as it is, the rear edge of the double-sided mirror film 3 is located rearward as it separates from the central portion. The probability that the light is reflected by the inner curved surface of the double-sided mirror film 3 and deflected toward the central portion increases. In this case, the angle of reflection is approximately the same as the angle of incidence, but as a whole, the amount of far-infrared rays directed toward the rear of the central portion is greater.

Furthermore, as shown in (b) of FIG. 3C, when the angle of incidence is remarkably large, almost all far-infrared rays are reflected by the outer curved surface of the double-sided mirror film 3, and even after that, most of the far-infrared rays are Reflection is repeated between adjacent inner curved surfaces of the double-sided mirror film 3, but the trailing edge of the double-sided mirror film 3 is located rearward as it moves away from the central portion, and the interval between the double-sided mirror films 3 widens toward the end. Therefore, there is a high probability that the reflected light will be deflected toward the center at a reflection angle that is slightly smaller than the angle of incidence as a result of repeated reflections. The amount of far-infrared rays is greater.

As described above, according to the heat collection unit 1 of the present invention, although the performance varies depending on the incident angle of the far-infrared rays, by passing the heat collection unit 1, the far-infrared rays incident from all angles While being deflected toward the central portion, it is possible to guide backward while approaching an angle close to straight ahead. However, as described above, the heat collecting unit 1 alone cannot produce a sufficient effect, so when it is used as the heat collector 2, it is necessary to use a plurality of units to obtain a synergistic effect.

Then, next, the heat collector 2 of the present invention will be described.

The heat collector 2 of the present invention has a plurality of heat collection units 1 arranged inside a cylindrical housing 6, and its basic structure is shown in FIG. The housing 6 is used in a vertically oriented state, and its outer periphery is surrounded by a thin cylindrical portion 7 through which far infrared rays can pass. As the material of the cylindrical portion 7, it is preferable to use a material such as acrylic resin which is transparent and has a high electromagnetic wave transmittance as much as possible, in addition to glass. A vertically long cylindrical heat absorption tube 9 having a diameter smaller than that of the cylindrical portion 7 extends vertically through the central portion of the housing 6, and a liquid such as water or oil filled therein for transferring heat. The heat absorbed by the heat medium 10 is transferred to the outside.

When the heat absorption tube 9 is irradiated with far infrared rays, it generates heat by thermal action and plays a role of conducting heat to the liquid inside. A metal material such as copper is desirable, and it is necessary to suppress the reflection of far-infrared rays by applying black matte paint or graphite powder to the surface, and to enhance the heat generation effect by heat action as much as possible. be. The space between the cylindrical portion 7 and the heat absorbing tube 9 is a space in which the heat collection unit 1 is arranged, and it is also effective to keep this space in a vacuum state like a thermos flask.

Furthermore, doughnut-shaped sealing plates 8 are attached to the upper and lower ends of the cylindrical housing 6 so as to close the upper and lower openings of the housing 6, and the heat absorption tube 9 is inserted through the central portion. The sealing plate 8 also functions as a member for mounting the heat collecting unit 1. By mounting the upper and lower support plates 4 in the heat collecting unit 1 shown in FIG. A double-sided mirror film 3 is vertically stretched inside the body 6 .

FIG. 4 also shows a horizontal cross-sectional shape of the housing 6 , and depicts a situation in which a plurality of heat collection units 1 are arranged inside the cylindrical housing 6 . In the figure, a plurality of heat collection units 1 are mounted at regular intervals on a plurality of concentric circles with different radii, and all the heat collection units 1 are arranged so that the front edge side faces outward. . The size of each heat collecting unit 1 changes according to each radial position, and becomes smaller toward the center.

As described above, the heat collecting unit 1 of the present invention has a small effect as a single unit, but can exhibit a sufficient effect by arranging a plurality of heat collecting units 1 as described above. That is, after the far-infrared rays irradiated to the heat collecting unit 1 on the outermost side pass through the heat collecting unit 1, heat is collected from all directions by passing through the next heat collecting unit 1 further inside one after another. Each time the far-infrared rays irradiated to the vessel 2 pass through the plurality of heat collection units 1, the traveling direction is gradually corrected toward the center of the cylindrical housing 6, and finally, the heat absorption tube 9 In the horizontal direction with respect to the surface, the light is irradiated at an angle close to vertical.

Most of the far-infrared rays irradiated to the heat collector 2 in this way are guided to the heat absorption tube 9 without leaking to the outside of the heat collector 2, and the far-infrared rays irradiated to the heat absorption tube 9 are caused by thermal action. Heat is generated to efficiently raise the temperature of the liquid inside the heat absorption tube 9 .

Next, FIG. 6 shows the overall configuration of a heat collection system using the heat collector 2 of the present invention. The pipes 11 with sufficient heat insulation are attached to the upper and lower ends of the heat absorption pipes 9, and each pipe 11 is connected to a heat exhauster 12 using a heat exchanger such as a radiator installed outdoors. ing.

The inside of the pipe 11 is filled with a liquid heat medium 10 like the heat absorption pipe 9, and by circulating through the pipe 11, the heat stored in the heat medium 10 warmed by the heat collector 2 is converted into the waste heat. It is discharged to the outside by the vessel 12 . When circulating the heat medium 10, it is possible to circulate using a pump, but as shown in FIG. The heat medium 10 whose specific gravity is reduced by being warmed by the pipe 9 rises from the upper end of the heat absorption tube 9 toward the heat sink 12, and the heat medium 10 whose specific gravity is increased by being cooled by the heat sink 12 absorbs heat. Since it descends to the lower end of the tube 9, natural circulation is possible without a pump.

In addition, it is desirable to install the heat collector 2 in the room as close to the heat source as possible, but it is also possible to install a plurality of heat collectors 2 with one pipe 11 by connecting in series or in parallel. be. In addition, since it is light in weight and resistant to vibrations during transportation, if a flexible material is used for the piping 11, it can be easily moved according to indoor conditions. Moreover, it is desirable to install the heat sink 12 in a well-ventilated and cool place, and depending on the situation, it is possible to use a blower for forced cooling.

As described above, the heat collection unit 1 of the present invention can deflect far-infrared rays irradiated from all directions in a certain direction, and the heat collector 2 in which a plurality of the heat collection units 1 are arranged In a room where there is a high temperature heat source such as a factory or computer room, the room temperature can be lowered by efficiently absorbing the far infrared rays emitted in large quantities by the phenomenon of radiation from the heat source and discharging them to the outside. of.

The heat collecting unit 1 of the present invention is capable of deflecting not only far-infrared rays but also electromagnetic waves of all wavelengths. Since it efficiently absorbs far-infrared rays, it can be effectively used not only for industrial applications such as factories, but also for air conditioning equipment for buildings and homes.

REFERENCE SIGNS LIST 1 heat collection unit 2 heat collector 3 double-sided mirror film 4 support plate 5 arc-shaped slit 6 housing 7 cylindrical portion 8 sealing plate 9 endothermic tube 10 heat medium 11 pipe 12 heat sink

Claims (1)

A columnar heat collection unit in which a plurality of vertically long double-sided mirror films stretched in a vertical direction are arranged at equal intervals, and the interior is partitioned into vertical slits by the plurality of double-sided mirror films, wherein the plurality of both surfaces The horizontal cross-sectional shape of the mirror film has a shape in which a plurality of arcs are provided symmetrically, the arc length of each arc increases according to the distance from the center, and the radius of curvature of each arc increases from the center. A heat collector in which a plurality of heat collection units that are larger than the distance of are arranged inside a cylindrical housing and a vertically long heat absorption pipe is provided in the center, wherein the heat collection unit is A heat collector comprising a plurality of concentric circles having different radii inside a cylindrical housing, and a plurality of heat collectors mounted at regular intervals.

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