JP2009182103A - Heat sink for solar power generation, and system for solar power generation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat sink capable of efficiently dissipating heat of a solar power generating element of a solar power generating device, which rotates on a predetermined axis so as to efficiently receive light rays corresponding to the position of the sun, using a limited space, and to provide a system for solar power generation. <P>SOLUTION: The heat sink for solar power generation includes: at least one heat pipe disposed below a solar unit having at least one substrate, mounted with the solar power generating element, at its bottom part and thermally connected to the substrate; and a heat dissipation fin portion composed of a plurality of heat dissipation fins each having a flat center fin portion inserted with the heat pipe, and a first bent plate-like fin portion and a second bent plate-like fin portion bent in mutually opposite directions and disposed at side ends of the center fin portion. The system for solar power generation is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat sink for solar power generation, in particular, a heat sink that dissipates heat from a solar power generation element of a unit, and a solar power generation system.

  With the growing environmental problems, solar power generation is attracting attention as clean energy. That is, solar power generation systems that use solar light energy by converting solar light energy into electrical energy are used. Solar power generation is a power generation method using a kind of semiconductor “solar cell” that generates electrical energy when receiving light. That is, when sunlight hits a silicon semiconductor connecting P-type and N-type, negative electricity and positive electricity are produced, negative electricity moves to N-type silicon, and positive electricity moves to P-type silicon, Produces a voltage. When a load such as a light bulb is connected to the electrode from the outside, a current flows to light the electrode. Using this principle, solar power generation has been put into practical use by applying peripheral technology.

 A solar power generation system is disclosed in Japanese Patent Application Laid-Open No. 2006-29668 (Patent Document 1). FIG. 6 is a schematic configuration diagram of a solar power generation system disclosed in Patent Document 1. As shown in FIG. 6, the solar power generation system 101 includes a solar panel 120 that generates power by receiving sunlight, a refrigerant circuit 110 that includes an electric compressor 112 that is driven by power generated by the solar panel 120, and a refrigerant circuit 110. A brine circulation circuit for circulating the brine heated by the heat pump effect by a pump 137 and a hot water circuit 140 are provided.

  The refrigerant circuit 110 is formed by sequentially connecting an electric compressor 112, a radiator 113, a capillary tube 116, an evaporator 117, and the like in an annular manner. The radiator 113 includes a first heat exchanger 114 for heating the hot water tank 142 and a second heat exchanger 115 provided so as to be able to exchange heat with the brine circulation circuit 130.

In the solar power generation system disclosed in Patent Document 1, brine, which is a fluid heat medium, is enclosed in a brine circulation circuit, and a heating pipe 34 through which the brine circulates is provided on the back side of the solar panel so that heat can be exchanged.
In the second heat exchanger, the refrigerant pipe through which the refrigerant in the refrigerant circuit circulates and the brine pipe through which the brine in the brine circulation circuit circulates are closely fixed so as to allow heat exchange.

  A concentrating solar power generation apparatus that condenses sunlight is disclosed in Japanese Patent Laid-Open No. 2001-274449 (Patent Document 2). FIG. 7 is a diagram for explaining the concentrating solar power generation apparatus disclosed in Patent Document 2. In FIG. A large number of hexagonal pyramid-shaped condensing prisms are arranged so that the upper edges are adjacent to each other to form a condensing body having a large area. If hexagonal pyramid-shaped condensing prisms are arranged densely with no gaps between them, sunlight is integrated by a large number of condensing prisms, so that sunlight incident on a power generation element with a small area is wasted. It can be used effectively without any problems. The solar power generation elements are provided separately from each other at a portion limited to the lower end of each condensing prism. That is, the light receiving area is increased, and the total use area of the solar power generation element is reduced.

As shown in FIG. 7, a light collector 113 formed by integrally coupling a plurality of solar power generation devices on a common insulating substrate 114 provided with wirings 115 and lead electrode terminals 116 is received. By arranging the photovoltaic element 102 between the lower tips of the plurality of cone-shaped condensing prisms 103 forming the condensing body 113 and the substrate 114 by placing the bottom portion 103 which is a surface upward, respectively, A large solar power generation device 110 is realized by a solar power generation element having a small total occupation area.
JP 2006-29668 A JP 2001-274449 A

  In the solar power generation system shown in Patent Document 1, heat exchange in which heat generation of the solar power generation element is closely fixed to a refrigerant pipe through which the refrigerant in the refrigerant circuit circulates and a brine pipe through which the brine in the brine circulation circuit circulates. It is done with a vessel. Therefore, although the heat dissipation function is high, it has a wide area and requires a complicated structure. Therefore, a compact solar power generation system is difficult.

  In the solar power generation device shown in Patent Document 2, no problem occurs when the light collection rate is small. However, when the light collection rate of individual solar power generation elements increases, the function of the solar power generation element decreases. That is, in the concentrating solar power generation, if the condensing rate is increased to increase the amount of power generation, the solar power generation element becomes high temperature and the power generation efficiency decreases. Even if the number of solar power generation elements increases, in order to maintain the function, it is necessary to efficiently dissipate the heat of the solar power generation elements.

  Furthermore, the concentrating solar power generation device needs to be able to rotate about a predetermined axis so that it can receive light efficiently according to the position of the sun according to time or season, and it corresponds to the rotational movement of the solar power generation device. Therefore, it is necessary to rotate the heat dissipation device while maintaining the heat dissipation function. Furthermore, the solar power generation device needs to increase power generation efficiency while maintaining the above-described heat dissipation function without being broken down even under conditions where the temperature difference between day and night is large.

  Accordingly, an object of the present invention is to efficiently use the heat of the solar power generation element of the solar power generation device that rotates about a predetermined axis so as to efficiently receive light corresponding to the position of the sun, using a limited space. An object of the present invention is to provide a heat sink capable of radiating heat.

  The inventor has conducted extensive research to solve the above-described conventional problems. As a result, when a plurality of heat dissipating fins composed of a flat central fin portion and a first bent plate-like fin bent around one side end portion upward or downward are arranged in parallel, the central fin portion and the first fin It has been found that a cooling airflow channel that flows along the one-fold plate-like fin portion is formed, and the heat of the solar unit can be effectively dissipated.

  Similarly, a plurality of sheets consisting of a flat central fin portion and first and second bent plate-like fin portions bent in opposite directions and positioned at respective side end portions of the central fin portion. When the heat sink fins are arranged so that the first bent plate fin portion and the second bent plate fin portion are substantially parallel, the air introduced into the first bent plate fin portion is warmed by the heat sink fin and Therefore, a cooling air flow passage is formed along the first bent plate-like fin portion, the central fin portion, and the second bent plate-like fin portion to effectively dissipate the heat of the solar unit. It turns out that you can.

Furthermore, in order to effectively dissipate the heat of the substrate in a state where the heat dissipating part for moving the heat of the substrate of the solar unit provided with the substrate at the bottom is disposed below the substrate, the heat pipe is a so-called top. Since it becomes a heat mode, it turned out that it is necessary to use the reverse operation type heat pipe provided with the wick function provided with the capillary force inside the container of the heat pipe.
The present invention has been made based on the research results described above.

  According to a first aspect of the heat sink for solar power generation of the present invention, there is provided at least one piece which is disposed below a solar unit having at least one substrate on which a solar power generation element is mounted and which is thermally connected to the substrate. A plurality of heat pipes, a flat central fin portion inserted through the heat pipe, and a first bent plate-like fin portion where one side end portion of the central fin portion is bent upward or downward. It is a heat sink for solar power generation which has a heat radiating fin part which consists of a heat radiating fin.

  According to a second aspect of the heat sink for solar power generation of the present invention, at least one heat sink is disposed below a solar unit having at least one substrate on which a solar power generation element is mounted, and is thermally connected to the substrate. Heat pipe, a flat central fin portion inserted through the heat pipe, a first bent plate-like fin portion and a second bent portion that are bent in opposite directions and located at respective side end portions of the central fin portion. A heat sink for solar power generation having a heat dissipating fin portion composed of a plurality of heat dissipating fins composed of a plate-shaped fin portion.

  According to a third aspect of the solar power generation heat sink of the present invention, a cooling air flow channel that flows along the first bent plate fin portion and the central fin portion is provided by a plurality of heat radiating fins arranged in parallel. This is a heat sink for solar power generation.

  According to a fourth aspect of the solar power generation heat sink of the present invention, the first bent plate-like fin portion and the second bent plate-like fin portion of the heat radiating fin are substantially parallel, and a plurality of heat radiating fins arranged in parallel. Is a solar power generation heat sink in which a flow path for cooling air flowing along the first bent plate-like fin portion, the central fin portion, and the second bent plate-like fin portion is formed.

  According to a fifth aspect of the solar power generation heat sink of the present invention, the end of the heat pipe on the substrate side has a loop shape, and the loop-shaped end portion is fixed to the heat receiving plate member. Heatsink.

  According to a sixth aspect of the solar power generation heat sink of the present invention, the solar unit rotates about an axis substantially parallel to a line connecting the first bent plate-like fin portion and the second bent plate-like fin portion. The solar power generation heat sink is characterized in that the heat pipe and the radiating fin rotate integrally with the solar unit.

  A seventh aspect of the heat sink for solar power generation according to the present invention is a heat sink for solar power generation in which the heat pipe includes a mechanism having a capillary force inside the container.

  A first aspect of the solar power generation system according to the present invention is a solar power generation in which a plurality of substrates are arranged at the bottom of the above-described solar unit, and the above-described heat pipes and heat radiation fin portions corresponding to the respective substrates are provided. System.

  According to a second aspect of the solar power generation system of the present invention, a plurality of the solar units are arranged in parallel, and the solar power generation system is formed by a plurality of parallel-arranged heat radiation fins that are thermally connected to the substrate of each unit. A solar power generation system in which flow paths of cooling air flowing along the first bent plate-like fin portion, the central fin portion, and the second bent plate-like fin portion are arranged in parallel.

  According to a third aspect of the solar power generation system of the present invention, the solar power generation system is characterized in that the solar unit is rotated so that a solar light receiving surface of the solar power generation element follows the sun.

  According to the heat sink for solar power generation of the present invention, a plurality of thin plate radiating fins stacked at predetermined intervals in the vertical direction form an air flow path from the lower side to the upper side. In a limited space, heat can be dissipated using the natural flow of wind.

  When a heat pipe is arranged by inserting heat radiating fins in a state where a plurality of heat radiating fins are stacked in a limited space below the solar unit, the substrate is located above and is thermally connected to the substrate. Although the heat pipe is in a so-called top heat mode, since a reverse operation type heat pipe having a wick function having a capillary force is used inside the container of the heat pipe, effective heat dissipation can be maintained.

  Furthermore, since the heat sink is formed integrally with the solar unit, the heat sink rotates together with the rotation of the solar unit, and excellent heat dissipation efficiency can be maintained. By forming the end portion of the heat pipe into a U-shape and inserting the U-shaped portion into the heat receiving plate, the working fluid can be prevented from freezing and the container from being ruptured due to a temperature difference.

An embodiment of a heat sink for solar power generation according to the present invention will be described with reference to the drawings.
One aspect of the heat sink for solar power generation according to the present invention is arranged below a solar unit having at least one substrate mounted with a solar power generation element at the bottom, and is thermally connected to the substrate. A plurality of sheets comprising a heat pipe, a flat central fin portion inserted through the heat pipe, and a first bent plate-shaped fin portion in which one side end portion of the central fin portion is bent upward or downward. There is a heat sink for solar power generation having a heat dissipating fin portion made of a heat dissipating fin.

  Furthermore, one aspect of the heat sink for solar power generation according to the present invention is at least one which is disposed below a solar unit having at least one substrate on which a solar power generation element is mounted and is thermally connected to the substrate. A first heat pipe, a flat central fin portion inserted through the heat pipe, a first bent plate-like fin portion and a second bent portion that are bent in opposite directions and located at respective side ends of the central fin portion. It is a heat sink for solar power generation having a heat radiation fin portion composed of a plurality of heat radiation fins composed of a bent plate-shaped fin portion.

  A plurality of heat dissipating fins arranged in parallel form a cooling wind passage that flows along the first bent plate-like fin portion and the central fin portion. Further, the first bent plate-like fin portion and the second bent plate-like fin portion of the heat radiating fin are substantially parallel, and a plurality of heat radiating fins arranged in parallel, the first bent plate-like fin portion, the central fin portion, and A cooling air flow channel that flows along the second bent plate-like fin portion is formed.

  FIG. 1 is a diagram for explaining one embodiment of a heat sink for solar power generation according to the present invention. The aspect shown in FIG. 1 is arranged so that the substrate on which the solar power generation element is mounted is horizontal. That is, this is an example in which the axis of rotation about which the light receiving surface of the solar unit rotates following the sun is horizontal to the ground.

  As shown in FIG. 1, a solar power generation heat sink 1 according to the present invention is disposed below a solar unit 2 having at least one substrate 7 mounted with a solar power generation element at the bottom. The solar power generation heat sink includes at least one heat pipe 5 thermally connected to the substrate 7, a flat central fin portion 4-1 inserted through the heat pipe 5, and a central fin portion bent in opposite directions. 4-1. A heat dissipating fin portion 4 composed of a plurality of heat dissipating fins each including a first bent plate-like fin portion 4-2 and a second bent plate-like fin portion 4-3 positioned at each side end portion of 4-1. Have.

You may provide the heat receiving board | plate material 3 arrange | positioned corresponding to the position of a board | substrate. In that case, the heat | fever of a board | substrate moves to a heat receiving board | plate material, and is moved to a radiation fin part with a heat pipe.
As shown in FIG. 1, the heat sink 1 is disposed in a space below the solar unit 2. As described above, the radiating fin includes the first bent plate-shaped fin portion 4-2, the central fin portion 4-1 and the second bent plate-shaped fin portion 4-3, and the plurality of radiating fins are in the vertical direction. Are arranged at predetermined intervals. Thus, air flows through a space formed by arranging a plurality of thin plate-like heat radiation fins in the vertical direction. That is, air is taken in from one end portion of the inclined first bent plate-like fin portion 4-2 from below to above and flows along a substantially horizontal central fin portion 4-1, and further from below. Flowing upward from one end of the inclined second bent plate-like fin portion 4-3 to the other end.

  In other words, cold air is taken in from one end of the first bent plate-shaped fin portion 4-2 inclined from below to above and enters the central fin portion through the other end, The temperature rises due to the heat moved by the heat pipe when moving from one end of the horizontal central fin portion to the other end, and the temperature-increased air is tilted upward from below. The two-folded plate-like fin portion 4-3 flows from one end portion to the other end portion. In this way, as shown by the arrows in the figure, along the inclined first bent plate-like fin portion 4-2, horizontal central fin portion 4-1 and second bent plate-like fin portion 4-3, Heat can be dissipated by convection.

  The unit 2 for solar power generation is a polygonal column-shaped body formed by a substrate 7 disposed at the bottom and mounted with a solar power generation element, and a solar light receiving surface disposed above the substrate 7 with a predetermined distance therebetween. It is made up of. That is, the solar power generation unit 2 is set as wide as possible as the light receiving surface on the side facing the sun, and has a polygonal shape with substantially the same cross section and extends downward in the position of the substrate. A heat sink is arranged using the space below the unit.

  In the embodiment shown in FIG. 1, the individual radiating fins forming the radiating fin portion 4 are the inclined first bent plate-like fin portion 4-2, horizontal central fin portion 4-1, and second bent plate-like fin portion 4. -3. A plurality of thin plate-like fins formed by being bent in this way are arranged in parallel.

  For example, a heat receiving plate 3 made of a metal having excellent thermal conductivity is thermally connected to the lower portion of the substrate 7 on which at least one solar power generation element is mounted. One end of the heat pipe 5 is thermally connected to a part of the heat receiving plate 3 as a heat receiving portion. The other end of the heat pipe 5 is thermally connected to a plurality of thin plate-like fins 6 arranged in parallel as a heat radiating part. For example, a hole is formed in the central fin portion 4-1 of the thin plate fin, and the heat pipe 5 is inserted into the hole. In that case, you may process the circumference | surroundings of a hole so that the contact surface of a hole and the heat pipe 5 may be enlarged.

  FIG. 2 is a diagram for explaining one embodiment of the heat sink for solar power generation according to the present invention. 2A is a front view, FIG. 2B is a side view, and FIG. 2C is a bottom view. As shown in FIG. 2A, the heat radiation fin 4 including the inclined first bent plate-like fin portion 4-2, the horizontal central fin portion 4-1, and the inclined second bent plate-like fin portion 4-3. They are stacked vertically at a predetermined interval. Above the central fin portion of the radiating fin, there is provided a heat receiving plate material 3 that is thermally connected to the substrate and moves the heat of the substrate, and one end portion of the heat pipe is thermally connected to the heat receiving plate material. .

  The heat pipe is inserted through the central fin portions of the plurality of heat dissipating fins stacked in the vertical direction at a predetermined interval, and the other end portion is located in a state of protruding below the heat dissipating fins. In this way, the heat radiation fins 4 including the inclined first bent plate-like fin portion 4-2, the horizontal central fin portion 4-1 and the inclined second bent plate-like fin portion 4-3 are vertically arranged at predetermined intervals. As indicated by the arrows between the heat radiation fins stacked on each other, cooling air flows by natural convection.

  As the heat pipe, a so-called U-shaped round heat pipe may be used, and the U-shaped portion may be thermally connected to the heat receiving plate material. In order to facilitate thermal connection, a groove corresponding to the heat receiving plate material may be formed, and a U-shaped portion may be fitted into the groove. FIG. 2B is a side view of the heat sink shown in FIG. As shown in FIG.2 (b), the edge part of the 2nd bending plate-shaped fin part 4-3 in which the radiation fin inclined was located in the front upper part. The back surface of the second bent plate-like fin portion 4-3 inclined downward can be seen. In the lowermost part, the back surface of the inclined first bent plate-like fin portion 4-2 can be seen. A line between the inclined second bent plate-like fin portion 4-3 and the inclined first bent plate-like fin portion 4-2 indicates the central fin portion of the heat radiating fin located at the lowermost position. The heat receiving plate member 3 is shown above the uppermost portion of the inclined second bent plate-like fin portion 4-3. As shown in FIG. 2B, the entire heat sink 1 including the heat radiating fins is located at the lower part of the solar unit.

  FIG.2 (c) has shown the state which looked at the heat sink shown to Fig.2 (a) from the back side. As shown in FIG. 2 (c), the back surface of the lowermost radiating fin is shown. The second bent plate-like fin portion 4-3 is inclined from above in the figure, the central fin portion is in the center, and is inclined downward. The first bent plate-like fin portion 4-2 is positioned. In the center fin portion, lower ends of two heat pipes provided perpendicular to the heat radiating fins are shown.

  FIG. 3 is a perspective view of the heat sink shown in FIG. 1 viewed from the back side. As shown in FIG. 3, the heat sink 1 is disposed in a space below the solar unit 2. The radiating fin includes a first bent plate-like fin portion 4-2, a central fin portion 4-1 and a second bent plate-like fin portion 4-3, and a plurality of radiating fins are spaced at a predetermined interval in the vertical direction. Are arranged. Thus, air flows through a space formed by arranging a plurality of thin plate-like heat radiation fins in the vertical direction. That is, air is taken in from one end portion of the inclined first bent plate-like fin portion 4-2 from below to above and flows along a substantially horizontal central fin portion 4-1, and further from below. Flowing upward from one end of the inclined second bent plate-like fin portion 4-3 to the other end.

  The heat of the substrate moves to the heat receiving plate member 3 provided thermally connected to the lower side of the substrate. One end of the heat pipe 5 is thermally connected to a part of the heat receiving plate 3 as a heat receiving portion. The other end of the heat pipe 5 is thermally connected to a plurality of thin plate-like fins 6 arranged in parallel as a heat radiating part. For example, a hole is formed in the central fin portion 4-1 of the thin plate fin, and the heat pipe 5 is inserted into the hole.

  As described with reference to FIGS. 1 to 3, the substrate provided at the bottom of the solar unit and the heat receiving plate member thermally connected to the substrate are located above the heat pipe. Therefore, the heat pipe operates in a so-called top heat mode. That is, the heat absorption part thermally connected to the heat receiving plate member is always located above the heat radiation part thermally connected to the heat radiation fin. The hydraulic fluid absorbs and evaporates due to the heat transferred from the heat-receiving plate at the heat-absorbing part in the heat pipe container, moves to the heat-dissipating part, is cooled by the heat-dissipating fins, and returns to the liquid phase. It is necessary to return to

  Therefore, a groove is formed on the inner wall of the container, and a wick that exhibits capillary force is placed in the container, and the working fluid that has returned to the liquid phase is returned to the heat absorption part using capillary force such as the wick. Let At this time, if an acute angle portion is formed between the container inner wall and the wick or the like, the capillary force is further increased along the acute angle portion. In any case, even when the heat pipe is positioned in the vertical direction, it has an excellent capillary force, and the design inside the container so that the working fluid that has returned to the liquid phase in the heat radiating part is returned to the heat absorbing part. It is important to make it appropriate.

  In the embodiment shown in FIGS. 1 to 3, the substrate is positioned horizontally, but in actual arrangement, the light receiving surface rotates in the horizontal plane and in the vertical direction following the position of the sun throughout the season. In this way, the substrate is arranged to be inclined. The heat pipe that is thermally connected to the substrate via the heat receiving plate member and the radiating fin portion inserted through the heat pipe rotate substantially integrally with the solar unit that rotates around the rotation axis. The heat sink of the present invention is positioned below the solar unit with the rotation of the solar unit described above, and air is taken in from one end portion of the inclined first bent plate-like fin portion 4-2 and is generally horizontal. Of the second bent plate-like fin portion 4-3 that is inclined from the lower side to the upper side, and flows from one end to the other end of the second bent plate-like fin portion 4-3. I do.

  FIG. 4 is a diagram for explaining another aspect of the heat sink for solar power generation according to the present invention, which includes a unit having an inclined substrate. As shown in FIG. 4, in this aspect, the solar unit follows the position of the sun and the light receiving surface is inclined. A substrate on which a solar power generation element is mounted is provided at the bottom of the solar unit, and a heat receiving plate material is thermally connected to the substrate. The heat receiving plate is inclined together with the substrate provided at the bottom of the solar unit. A space for housing the heat sink is located below the inclined solar unit.

  In the space portion thus positioned, the radiating fin including the inclined first bent plate-like fin portion 4-2, the central fin portion 4-1 and the inclined second bent plate-like fin portion 4-3 is provided at the center. The fin portions are arranged so as to be parallel to the heat receiving plate member, and a plurality of heat radiation fins are laminated at a predetermined interval. That is, the heat dissipating fin portion of the heat sink is inclined integrally with the inclined solar unit. The inclined solar unit follows the position of the sun and rotates as shown in the figure with the extended line of the long axis of the substrate as the rotation axis.

  The heat pipe 5 is disposed through the inclined central fin portion of the radiating fin, and one end portion is inserted into the heat receiving plate member 4 and fixed. The heat pipe 5 thermally connected to the heat receiving plate 3 at the bottom of the solar unit 2 installed at a predetermined angle is arranged so that the heat absorbing portion is high and the heat radiating portion is low, so-called top heat mode. Is in a state. For this reason, in order to avoid so-called dry-out and effectively radiate heat, it is necessary to make the wick structure in the container appropriate so that the working fluid sealed in the container returns to the heat-absorbing part by capillary force. .

  In the embodiment shown in FIG. 4, the cold wind is taken in from one end of the first bent plate-shaped fin portion 4-2 inclined from below to above, and passes through the other end to the central fin portion. The temperature rises due to the heat moved by the heat pipe when moving from one end of the inclined central fin portion to the other end, and the temperature-increased air is inclined upward from below. The second bent plate-like fin portion 4-3 flows from one end portion to the other end portion. In this way, as indicated by the arrows in the figure, along the inclined first bent plate fin portion 4-2, the inclined central fin portion 4-1, and the inclined second bent plate fin portion 4-3. The heat can be dissipated by natural convection.

  Although not shown, a plurality of solar power generation heat sinks described with reference to FIGS. 1 to 3 or 4 may be arranged in parallel corresponding to the number of solar units. The individual solar units follow the position of the sun and the light receiving surface is inclined. A heat sink is integrally disposed with the solar unit corresponding to each of the space portions located below the individual solar units. The central fin portion of the heat radiating fin of the heat sink is provided so as to be parallel to the substrate and the heat receiving plate material provided at the bottom of the solar unit.

  The heat pipe 5 is disposed through the inclined central fin portion of the radiating fin, and one end portion is inserted into the heat receiving plate member 4 and fixed. The heat pipe 5 that is thermally connected to the heat receiving plate 3 at the bottom of the solar unit 2 that is installed inclined at a predetermined angle has a high heat absorption portion and a low heat dissipation portion, as in the other embodiments. Arranged and in a so-called top heat mode state. Therefore, in order to avoid so-called dry-out and effectively dissipate heat, it is necessary to make the wick structure in the container appropriate so that the hydraulic fluid enclosed in the container returns to the heat-absorbing part by capillary force.

  FIG. 5 is a partially enlarged view of the heat pipe. As shown in FIG. 5A, when the end portion of the heat pipe 5 that is thermally connected to the heat receiving plate material is formed in a U shape or a loop shape, the working fluid can flow at the end portion, and the working fluid can be frozen. Can be prevented. Further, as shown in FIG. 5 (b), by inserting the end of the U-shaped heat pipe 5 into the heat receiving plate 3, it is possible to prevent the container of the heat pipe 5 from being ruptured by a sudden temperature change. it can. In addition, although the radiation fin part demonstrated the radiation fin part which consists of the bending plate-like fin part which inclined the upper part, and the perpendicular | vertical plate-like fin part arrange | positioned perpendicularly, a radiation fin part is a perpendicular | vertical thing without a bending part. You may consist of a plate-shaped fin arrange | positioned.

  Although the solar power generation heat sink has been mainly described, the solar power generation system incorporating the solar power generation heat sink described above functions similarly.

  As described above, according to the solar power generation heat sink and solar power generation system of the present invention, a plurality of thin plate radiating fins stacked at predetermined intervals in the vertical direction form a flow path of air gently from below to above. Therefore, in a limited space below the solar unit, heat can be radiated by utilizing the natural flow of wind. Furthermore, according to the heat sink for solar power generation of the present invention, when a plurality of heat radiation fins are stacked in a limited space below the solar unit and the heat pipe is disposed through the heat radiation fins, the substrate is The heat pipe that is thermally connected to the substrate is in the so-called top heat mode, but because the reverse operation type heat pipe with wick function with capillary force is used inside the heat pipe container, Effective heat dissipation can be maintained.

FIG. 1 is a diagram for explaining one embodiment of a heat sink for solar power generation according to the present invention. FIG. 2 is a diagram for explaining one embodiment of the heat sink for solar power generation according to the present invention. 2A is a front view, FIG. 2B is a side view, and FIG. 2C is a bottom view. FIG. 3 is a perspective view of the heat sink shown in FIG. 1 viewed from the back side. FIG. 4 is a diagram for explaining another aspect of the heat sink for solar power generation according to the present invention, which includes a unit having an inclined substrate. FIG. 5 is a partially enlarged view of the heat pipe. FIG. 6 is a schematic configuration diagram of a conventional solar power generation system. FIG. 7 is a diagram illustrating a conventional concentrating solar power generator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat sink for solar power generation 2 Solar unit 3 Heat-receiving board material 4 Radiation fin part 4-1 Center fin part 4-2 1st bending plate-like fin part 4-3 2nd bending plate-like fin part 7 Board | substrate

Claims (10)

  At least one heat pipe that is disposed below a solar unit that includes at least one substrate on which a solar power generation element is mounted and that is thermally connected to the substrate, and a flat inserted through the heat pipe. For solar power generation having a central fin portion and a plurality of heat radiating fin portions including a first bent plate-shaped fin portion in which one side end portion of the central fin portion is bent upward or downward heatsink.   At least one heat pipe that is disposed below a solar unit that includes at least one substrate on which a solar power generation element is mounted and that is thermally connected to the substrate, and a flat inserted through the heat pipe. It comprises a plurality of heat dissipating fins comprising a central fin portion and first and second bent plate-like fin portions bent in opposite directions to each other and located at respective side end portions of the central fin portion. A heat sink for solar power generation having a radiation fin portion.   2. The solar power generation device according to claim 1, wherein a plurality of heat dissipating fins arranged in parallel form a cooling air flow channel that flows along the first bent plate-shaped fin portion and the central fin portion. heatsink.   The first bent plate-like fin portion and the second bent plate-like fin portion of the heat radiating fin are substantially parallel to each other, and the first bent plate-like fin portion and the central fin are arranged by a plurality of heat radiating fins arranged in parallel. The solar power generation heat sink according to claim 2, wherein a flow path for cooling air flowing along the second bent plate-like fin portion is formed.   5. A solar power generation system, wherein a plurality of substrates are arranged at the bottom of the solar unit according to claim 1, and the heat pipes and the radiation fin portions corresponding to the respective substrates are provided. .   The solar power generation according to any one of claims 1 to 4, wherein an end of the heat pipe on the substrate side has a loop shape, and the end of the loop shape is fixed to the heat receiving plate member. Heat sink.   A plurality of the solar units are arranged in parallel, and are formed by a plurality of heat-dissipating fins arranged in parallel and thermally connected to the substrate of each unit, the first bent plate-like fin portion, the central fin portion, and The solar power generation system according to claim 5, wherein the cooling airflow passages flowing along the second bent plate-like fin portions are arranged in parallel.   The solar unit rotates about an axis substantially parallel to a line connecting the first bent plate-like fin portion and the second bent plate-like fin portion, and the heat pipe and the heat radiating fin are integrated with the solar unit. The heat sink for solar power generation according to any one of claims 1 to 4, and 6, wherein the heat sink for solar power generation is characterized in that it rotates in a rotating manner.   The solar power generation system according to claim 5 or 7, wherein the solar unit is rotated such that a solar light receiving surface of the solar power generation element follows the sun. The heat sink for solar power generation according to any one of claims 1 to 4, 6, and 8, wherein the heat pipe includes a mechanism having a capillary force inside the container.

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