JP2015145769A - Solar photovoltaic power generation panel cooling device and solar photovoltaic power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for stabilizing the motion of a working fluid during movement.SOLUTION: A heat receiving unit 41 that forms a first chamber, a heat radiation unit 42 that forms a second chamber, and a communication unit 43 that communicates the first chamber with the second chamber are formed by a heat pipe 40 of a cooling device 4 for a solar photovoltaic power generation panel. A working fluid is filled into the heat receiving unit 41, the heat radiation unit 42, and the communication unit 43. The heat receiving unit 41 is attached to the solar photovoltaic power generation panel in a state of being able to transfer heat. In a state in which the heat receiving unit 41 is attached to the solar photovoltaic power generation panel and in which the solar photovoltaic power generation panel is installed to be able to generate power, the communication unit 43 is disposed so that the working fluid present in the heat receiving unit 41 moves to the heat radiation unit 42 by the movement of the working fluid upward in the first chamber, and so that the working fluid present in the heat radiation unit 42 moves to the heat receiving unit 41 by the movement of the working fluid downward in the second chamber.

Description

  The present invention relates to a technology for cooling a photovoltaic power generation panel.

  Conventionally, a technology for cooling a power generation panel that converts sunlight into electricity is known. For example, Patent Document 1 describes a technique for cooling a solar power generation device by heat transporting heat generated in the solar power generation device with a self-excited vibration heat pipe and radiating the heat to the atmosphere.

JP 2011-103350 A

  However, the technique described in Patent Document 1 has a problem in that no consideration is given to the movement of the working fluid enclosed in the self-excited vibration heat pipe during operation. Therefore, the technique described in Patent Document 1 has a problem in that the circulation performance of the working fluid is poor during operation, and the efficiency of heat transport by the working fluid is reduced.

  This invention is made | formed in view of the said subject, and it aims at providing the technique which stabilizes the motion of the working fluid at the time of operation | movement.

  In order to solve the above problems, the invention of claim 1 is a cooling device for a photovoltaic power generation panel, wherein a heat receiving part forming a first chamber, a heat radiating part forming a second chamber, and the first chamber. And a communication portion that communicates with the second chamber, the heat receiving portion, the heat radiating portion, and the communication portion contain working fluid, and the heat receiving portion can conduct heat to the photovoltaic power generation panel. In the state where the heat receiving portion is attached to the photovoltaic power generation panel and the photovoltaic power generation panel is installed so as to be capable of generating power, the communication portion is configured such that the working fluid is in the first chamber. Is moved so that the working fluid present in the heat receiving portion moves to the heat radiating portion, and the working fluid moves downward in the second chamber to the heat radiating portion. The working fluid present is It is arranged to move the thermal unit.

  The invention of claim 2 is the solar power panel cooling device according to the invention of claim 1, wherein the communication portion is used when the working fluid moves from the heat receiving portion to the heat radiating portion. The high-temperature fluid flow path and the low-temperature fluid flow path used when the working fluid moves from the heat radiating portion to the heat receiving portion are separately formed.

  Moreover, invention of Claim 3 is a solar power generation panel cooling device which concerns on invention of Claim 2, Comprising: The said communication part is provided with the non-return valve which prescribes | regulates the moving direction of a working fluid.

  Moreover, invention of Claim 4 is the cooling device for photovoltaic power generation panels which concerns on invention of any one of Claim 1 thru | or 3, Comprising: In the state in which the said heat receiving part was attached to the said photovoltaic power generation panel, the said heat dissipation The part is disposed above the heat receiving part.

  The invention of claim 5 is the solar power generation panel cooling apparatus according to claim 4 of the present invention, wherein the working fluid plate-like flow is formed by the heat receiving portion, the heat radiating portion, and the communication portion. A path is formed.

  The invention of claim 6 is the solar power panel cooling apparatus according to claim 2 or 3, wherein the working fluid is spirally formed by the heat receiving portion, the heat radiating portion, and the communicating portion. A flow path wound around is formed.

  The invention according to claim 7 is the solar power generation panel cooling apparatus according to claim 6, wherein the apex angle arranged at the lowest position is an acute angle in the winding shape of the spirally wound channel. It is.

  Moreover, invention of Claim 8 is a cooling device for photovoltaic power generation panels of Claim 6 or 7, Comprising: In the winding shape of the flow path wound in the said spiral shape, the apex angle arrange | positioned lowest In the portion that forms, the spirally wound flow path is bent in a direction along the photovoltaic power generation panel.

  The invention of claim 9 is the solar power panel cooling device according to any one of claims 6 to 8, wherein the spirally wound flow path has a substantially triangular shape.

  The invention of claim 10 is a solar power generation panel cooling apparatus according to any of claims 6 to 9, wherein the heat receiving portion is attached to the solar power generation panel, and the solar light is provided. In a state where the power generation panel is installed so as to be able to generate power, the heat radiating portion is arranged to extend in a substantially vertical direction.

  Moreover, invention of Claim 11 is a solar power generation device, Comprising: The photoelectric conversion element which converts sunlight into electricity, the base material which fixes the said photoelectric conversion element, The solar power generation fixed to the said base material A cooling device for a panel, wherein the cooling device for a photovoltaic power generation panel communicates the heat receiving portion forming the first chamber, the heat radiating portion forming the second chamber, and the first chamber and the second chamber. And the heat receiving portion, the heat radiating portion, and the communication portion are filled with a working fluid, and in a state where the photoelectric conversion element is installed so as to be able to generate power, the communication portion Is arranged so that the working fluid existing in the heat receiving portion moves to the heat radiating portion by moving upward in the first chamber, and the working fluid moves downward in the second chamber. The working fluid present in the heat radiating part is It is arranged to move to.

  According to the first to eleventh aspects of the present invention, the communication portion is arranged such that the working fluid existing in the heat receiving portion moves to the heat radiating portion when the working fluid moves upward in the first chamber, and the operation portion operates. Since the working fluid existing in the heat radiating part moves to the heat receiving part by moving the fluid downward in the second chamber, the movement of the working fluid is stabilized, so that the heat conduction efficiency is improved, The cooling effect is improved.

It is a figure which shows the solar power generation device in 1st Embodiment. It is the figure which looked at the solar power generation device in a 1st embodiment from the undersurface side of a substrate. It is a figure which shows the vicinity part of the communication part of the heat pipe in 1st Embodiment. It is a figure which shows the solar power generation device in 2nd Embodiment. It is the figure which looked at the solar power generation device in 2nd Embodiment from the lower surface side of the base material. It is a figure which shows the vicinity part of the communication part of the heat pipe in 2nd Embodiment. It is a figure which shows the solar power generation device in 3rd Embodiment. It is the figure which looked at the solar power generation device in 3rd Embodiment from the lower surface side of the base material. It is the schematic which shows the heat pipe in 3rd Embodiment. It is a figure which shows the solar power generation device in 4th Embodiment. It is the figure which looked at the solar power generation device in 4th Embodiment from the lower surface side of the base material. It is the schematic which shows the heat pipe in 4th Embodiment. It is a figure which shows the solar power generation device in 5th Embodiment. It is the figure which looked at the solar power generation device in 5th Embodiment from the lower surface side of the base material. It is the schematic which shows the heat pipe in 5th Embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. However, unless otherwise specified in the following description, descriptions of directions and orientations correspond to the drawings for the convenience of the description, and do not limit, for example, a product, a product, or a scope of rights.

<1. First Embodiment>
FIG. 1 is a diagram illustrating a solar power generation device 10 according to the first embodiment. In FIG. 1, an X axis, a Y axis, and a Z axis that are orthogonal to each other are defined. Both the X axis and the Y axis are axes in the horizontal plane. Further, the Z axis is an axis with the upward in the vertical direction being positive. In FIG. 1, the solar power generation device 10 is assumed to be in a state of being installed on the ground, a roof, or the like (a state where power generation is possible) by a pedestal or the like (not shown). That is, in FIG. 1, the attitude | position at the time of operation | movement is shown about each structure of the solar power generation device 10. In FIG.

  As shown in FIG. 1, a photovoltaic power generation apparatus 10 includes a photoelectric conversion element 2 that converts sunlight into electricity, a base material 3 that fixes the photoelectric conversion element 2, and a solar power generation panel that is fixed to the base material 3. Cooling device 4. In FIG. 1, the solar power panel cooling device 4 is shown attached to the base material 3.

  The photoelectric conversion element 2 is composed of an element that generates electric power by irradiated sunlight, and forms a plate-like structure in order to increase the incident area of sunlight. Actually, a large number of elements are included in the plate-like structure, but these are collectively referred to as a photoelectric conversion element 2 for convenience.

  The photoelectric conversion element 2 is arranged so that the incident angle of sunlight is substantially vertical in order to realize efficient power generation. Moreover, during operation (during power generation), the photoelectric conversion element 2 is warmed by the energy of the received sunlight being changed to heat, resulting in a high temperature. And in the general photoelectric conversion element 2, when it becomes high temperature, power generation efficiency will fall. Therefore, in order to maintain the power generation efficiency of the photoelectric conversion element 2, it is preferable to cool the photoelectric conversion element 2.

  The base material 3 is a plate-like member in which the photoelectric conversion element 2 is fixed to the upper surface 30, and has a function of structurally reinforcing the photoelectric conversion element 2 while arranging the photoelectric conversion element 2 at a predetermined position. ing. Furthermore, the base material 3 is made of a material excellent in heat conduction, and has a function of transferring heat generated in the photoelectric conversion element 2 toward the solar power generation panel cooling device 4 fixed to the lower surface 31. doing.

  Although detailed description is omitted here, the photoelectric conversion element 2 and the base material 3 constitute a so-called “solar photovoltaic panel”. As shown in FIG. 1, the photoelectric conversion element 2 is arranged in an inclined state according to the direction in which sunlight enters. In general, after the photovoltaic power generation apparatus 10 is installed, the posture of the photoelectric conversion element 2 is fixed, but the posture conversion mechanism (see FIG. 5) changes its orientation according to the position of the sun. (Not shown) may be provided.

  FIG. 2 is a diagram of the solar power generation device 10 according to the first embodiment viewed from the lower surface 31 side of the base material 3.

  The solar power generation panel cooling device 4 according to the first embodiment is configured by a circular (internally hollow) heat pipe 40 made of a material excellent in heat conduction (for example, aluminum or copper).

  In addition, the heat receiving area | region 90 shown with a broken line in FIG. 2 is an area | region where the base material 3 becomes high temperature compared with another part with the heat | fever from the photoelectric conversion element 2 at the time of operation | movement (at the time of electric power generation). Moreover, the heat radiation area | region 91 shown with a broken line in FIG. 2 is an area | region where the heat pipe 40 radiates heat to air | atmosphere at the time of operation | movement. However, the heat receiving region 90 and the heat radiating region 91 are regions that are not clearly defined as boundaries with other regions and are defined as approximate positions.

  Further, although detailed description is omitted here, the solar panel cooling device 4 is attached to the lower surface 31 of the base material 3 so as not to easily fall off by a mounting member (or an adhesive, welding, etc.) not shown. It is fixed. The attachment of the solar power generation panel cooling device 4 by the attachment member is preferably a method that does not hinder the thermal conductivity between the heat pipe 40 and the substrate 3. That is, even if the heat pipe 40 is brought into close contact with the base material 3 or the heat pipe 40 is attached to the base material 3 via another member, the other member is heated from the base material 3 to the heat pipe 40. It is preferable that the material (a material having excellent thermal conductivity) and a shape (a thin film or the like) that do not hinder the transmission of the light.

  As shown in FIG. 2, the heat pipe 40 in the first embodiment includes a heat receiving portion 41 and a heat radiating portion 42. A working fluid 9 is enclosed in the tubular heat pipe 40 (hollow part). Thereby, the inside of the heat pipe 40 is a flow path of the working fluid 9. That is, the working fluid 9 can move according to the piping shape of the heat pipe 40.

  The heat receiving part 41 is a part of the heat pipe 40 and is disposed in the heat receiving region 90. The heat pipe 40 receives heat from the base material 3 (photoelectric conversion element 2) in the heat receiving part 41 arranged in the heat receiving region 90.

  The heat radiating part 42 is a part of the heat pipe 40 and is disposed in the heat radiating area 91. As already described, the heat pipe 40 radiates heat in the heat radiating portion 42 arranged in the heat radiating region 91.

  Returning to FIG. 1, the heat pipe 40 includes a communication portion 43. The communication portion 43 in the first embodiment is formed as a portion in which the heat pipe 40 is bent in a “shape”. That is, as is clear from FIGS. 1 and 2, the solar power generation panel cooling device 4 according to the first embodiment is configured so that the heat pipe 40 stretched in a flat plate shape has an axis P parallel to the X axis (FIG. 3). The shape is bent. In other words, the heat receiving part 41, the heat radiating part 42, and the communication part 43 form a plate-like flow path for the working fluid 9.

  FIG. 3 is a view showing the vicinity of the communication portion 43 of the heat pipe 40 in the first embodiment. FIG. 3 shows a state in which the cross section of the communication portion 43 shown in FIG. 1 is viewed from the (−X) direction to the (+ X) direction. That is, FIG. 3 shows the posture of the heat pipe 40 when the solar power generation device 10 in the first embodiment actually generates power (when installed).

  A heat receiving portion 41 that receives heat is present below the communication portion 43 (low position). Since the heat receiving part 41 is a part of the tubular heat pipe 40, the heat receiving part 41 forms a cavity (first chamber 44) therein.

  In addition, a heat dissipating part 42 that dissipates heat is present above the communication part 43 (high position). Since the heat radiation part 42 is a part of the tubular heat pipe 40, the heat radiation part 42 forms a cavity (second chamber 45) inside.

  As is apparent from FIG. 3, the communicating portion 43 in the first embodiment communicates the first chamber 44 of the heat receiving portion 41 and the second chamber 45 of the heat radiating portion 42. Therefore, the working fluid 9 can move between the first chamber 44 and the second chamber 45. In addition, the heat receiving part 41, the heat radiating part 42, and the communication part 43 do not have a clear boundary with each other, but are parts in which approximate positions in the heat pipe 40 are defined.

  The communication portion 43 is arranged such that the working fluid 9 existing in the heat receiving portion 41 moves to the heat radiating portion 42 when the working fluid 9 moves upward in the first chamber 44. The working fluid 9 in the first chamber 44 heated by the heat receiving part 41 receiving heat has a reduced specific gravity and forms an upward flow. The working fluid 9 moved upward by this flow passes through the communication portion 43 and smoothly moves to the heat radiating portion 42.

  The communication portion 43 is arranged so that the working fluid 9 existing in the heat radiating portion 42 moves to the heat receiving portion 41 when the working fluid 9 moves downward in the second chamber 45. The working fluid 9 in the second chamber 45 cooled by the heat radiating unit 42 radiating heat has a high specific gravity and forms a downward flow. The working fluid 9 moved downward by this flow passes through the communication portion 43 and smoothly moves to the heat receiving portion 41.

  As described above, the solar power generation panel cooling device 4 moves toward the heat radiating portion 42 by the working fluid 9 heated in the heat receiving portion 41 moving upward in the first chamber 44. In addition, the working fluid 9 cooled in the heat radiating unit 42 moves toward the heat receiving unit 41 by moving downward in the second chamber 45. That is, the solar power panel cooling device 4 can guide the working fluid 9 to a position suitable for heat transport so as to follow the convection direction of the working fluid 9 generated by heat reception and heat dissipation. Therefore, since the movement (flow) of the working fluid 9 in the heat pipe 40 is stabilized as compared with the conventional technology in which such consideration is not given, the heat conduction efficiency (heat transport efficiency) by the working fluid 9 is improved. The cooling effect on the photoelectric conversion element 2 is improved.

  Moreover, in the solar power generation device 10 (solar power generation panel cooling device 4) according to the first embodiment, the heat radiating unit 42 is disposed above the heat receiving unit 41. In other words, the heat radiating part 42 is arranged at a position higher than the heat receiving part 41. Therefore, the movement of the working fluid 9 is further stabilized.

  Furthermore, in the solar power generation device 10 according to the first embodiment, the heat receiving unit 41 and the heat radiating unit 42 are arranged at positions relatively separated from each other. That is, the heat dissipating part 42 is arranged to be hardly affected by the heat receiving part 41 having a relatively high temperature, and the heat dissipating effect in the heat dissipating part 42 is high.

<2. Second Embodiment>
FIG. 4 is a diagram illustrating the solar power generation device 11 according to the second embodiment. In FIG. 4, the solar power generation device 11 is assumed to be in a state of being installed on the ground, a roof, or the like (a state where power generation is possible) by a pedestal or the like (not shown). That is, in FIG. 4, the attitude | position at the time of operation | movement is shown about each structure of the solar power generation device 11. In FIG. FIG. 5 is a view of the solar power generation device 11 according to the second embodiment as viewed from the lower surface 31 side of the base material 3.

  The solar power generation device 11 according to the second embodiment is different from the solar power generation panel cooling device 4 in that the solar power generation panel cooling device 5 includes the solar power generation panel cooling device 5. Different from the power generation device 10. In the following description, with respect to the solar power generation device 11 in the present embodiment, the same components as those of the solar power generation device 10 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  The solar panel cooling device 5 includes a heat pipe 50 similar to the heat pipe 40 in the first embodiment. In addition, the heat pipe 50 is attached to the lower surface 31 of the base material 3 to thereby correspond to the heat receiving part 41, the heat radiating part 42, and the communication part 43 in the first embodiment, respectively. A communication unit 53 is provided.

  FIG. 6 is a view showing the vicinity of the communication portion 53 of the heat pipe 50 in the second embodiment.

  Similarly to the photovoltaic power generation panel cooling device 4 in the first embodiment, also in the photovoltaic power generation panel cooling device 5 in the second embodiment, one heat radiating portion 52 has two communication portions 53. Is connected to the heat receiving part 51. In the following description, the two communication parts 53 connected to the same heat radiating part 52 are referred to as a communication part 531 and a communication part 532 for distinction.

  In the heat pipe 50 according to the second embodiment, one or more check valves 56 are arranged (in FIG. 6, two check valves 56 are shown). The check valve 56 is a valve that allows fluid (working fluid 9) to pass in only one direction. That is, the check valve 56 has a function of defining the moving direction of the working fluid 9 in one direction at the position where the check valve 56 is disposed. As the check valve 56, various structures, shapes, and methods that have been conventionally proposed can be adopted as appropriate, and thus detailed description thereof is omitted here.

  The check valve 56 disposed in the vicinity of the communication portion 531 is installed in a direction that allows the working fluid 9 to pass from below to above. On the other hand, the check valve 56 disposed in the vicinity of the communication portion 532 is installed in a direction that allows the working fluid 9 to pass from the upper side to the lower side.

  Thereby, the communication part 531 forms the high-temperature fluid flow path used when the working fluid 9 moves from the heat receiving part 51 to the heat radiating part 52. On the other hand, the communication part 532 forms a low-temperature fluid channel used when the working fluid 9 moves from the heat radiating part 52 to the heat receiving part 51.

  Thus, in the solar power generation panel cooling device 5 according to the second embodiment, the communication part 53 causes the high-temperature fluid flow path (flow path formed by the communication part 531) and the low-temperature fluid flow path (communication part). Are formed as separate flow paths. Thereby, in one communication part 53, since the collision of the working fluid 9 which moves upward and the working fluid 9 which moves downward is avoided, compared with the cooling device 4 for photovoltaic power generation panels in 1st Embodiment. Thus, the movement of the working fluid 9 is further stabilized.

<3. Third Embodiment>
FIG. 7 is a diagram illustrating a solar power generation device 12 according to the third embodiment. In FIG. 7, the solar power generation device 12 is assumed to be in a state of being installed on the ground, a roof, or the like (a state where power generation is possible) by a pedestal or the like (not shown). That is, in FIG. 7, the attitude | position at the time of operation | movement is shown about each structure of the solar power generation device 12. FIG. Moreover, FIG. 8 is the figure which looked at the solar power generation device 12 in 3rd Embodiment from the lower surface 31 side of the base material 3. FIG.

  The solar power generation device 12 in the third embodiment is different from the solar power generation panel cooling device 4 in that the solar power generation panel cooling device 6 is provided with the solar power generation panel cooling device 6 in the first embodiment. Different from the power generation device 10. In the following description, for the solar power generation device 12 in the present embodiment, the same components as those of the solar power generation device 10 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  The solar panel cooling device 6 includes a heat pipe 60 similar to the heat pipe 40 in the first embodiment. That is, the heat pipe 60 is also a tubular member made of a material having excellent thermal conductivity (for example, aluminum or copper). However, the pipe shape in the YZ plan view of the heat pipe 60 in the third embodiment (the winding shape 92 indicated by a two-dot chain line in FIG. 7) is substantially rectangular.

  In addition, the heat pipe 60 is attached to the lower surface 31 of the base material 3 to thereby correspond to the heat receiving part 41, the heat radiating part 42, and the communication part 43 in the first embodiment, respectively. A communication part 63 is formed. In other words, the solar power panel cooling device 5 includes a heat receiving portion 61, a heat radiating portion 62, and a communicating portion 63.

  More specifically, a portion corresponding to one of the long sides of the substantially rectangular shape formed by the winding shape 92 of the heat pipe 60 is attached to the lower surface 31 of the substrate 3, whereby the substrate 3 (photoelectric conversion element 2 The heat receiving part 61 which receives the heat from) is comprised.

  Further, a portion corresponding to the other of the long sides of the substantially rectangular shape formed by the winding shape 92 of the heat pipe 60 is open to the atmosphere, and constitutes a heat radiating portion 62 that radiates heat.

  In addition, a portion corresponding to one of the short sides (the one disposed above) of the substantially rectangular shape formed by the winding shape 92 of the heat pipe 60 connects the heat receiving portion 61 and the heat radiating portion 62, The communication part 63 (communication part 631) is comprised.

  Further, the portion corresponding to the other of the short sides (the one disposed below) of the substantially rectangular shape forming the winding shape 92 of the heat pipe 60 also connects the heat receiving portion 61 and the heat radiating portion 62, and communicates with each other. The part 63 (communication part 632) is comprised.

  As shown in FIGS. 7 and 8, in the solar power panel cooling device 6 in the third embodiment, the working fluid 9 is formed by the heat pipe 60 (the heat receiving portion 61, the heat radiating portion 62, and the communicating portion 63). A spirally wound flow path is formed. In other words, in the solar power generation panel cooling device 6 according to the third embodiment, a part of the heat pipe 60 is wound in a spiral shape (coil shape), whereby the spiral flow path of the working fluid 9 is formed. Is formed.

  FIG. 9 is a schematic view showing a heat pipe 60 in the third embodiment. Also in the heat pipe 60, the first chamber 64 is formed by the tubular heat receiving portion 61, and the second chamber 65 is formed by the tubular heat radiating portion 62.

  The communicating portion 631 is arranged such that the working fluid 9 existing in the heat receiving portion 61 moves to the heat radiating portion 62 when the working fluid 9 moves upward in the first chamber 64 of the heat receiving portion 61. The working fluid 9 in the first chamber 64 heated by the heat receiving portion 61 receiving heat has a low specific gravity and forms an upward flow. The working fluid 9 moved upward by this flow passes through the communication portion 631 and smoothly moves to the heat radiating portion 62.

  The communication portion 632 is arranged such that the working fluid 9 existing in the heat radiating portion 62 moves to the heat receiving portion 61 when the working fluid 9 moves downward in the second chamber 65 of the heat radiating portion 62. . The working fluid 9 in the second chamber 65 cooled by the heat radiating unit 62 radiating heat has a higher specific gravity and forms a downward flow by the action of gravity. The working fluid 9 moved downward by this flow passes through the communication portion 632 and smoothly moves to the heat receiving portion 61.

  As described above, also in the solar power panel cooling device 6, the working fluid 9 heated in the heat receiving portion 61 moves upward in the first chamber 64 of the heat receiving portion 61, thereby moving toward the heat radiating portion 62. Move. In addition, the working fluid 9 cooled in the heat radiating unit 62 moves toward the heat receiving unit 61 by moving downward in the second chamber 65 of the heat radiating unit 62. That is, also in the solar power generation panel cooling device 6 in the present embodiment, the working fluid 9 is suitable for heat transport so as to follow the convection direction of the working fluid 9 generated by heat reception and heat dissipation, as in the above embodiment. Can lead to position.

  Moreover, the communication part 631 forms the high-temperature fluid flow path used when the working fluid 9 moves from the heat receiving part 61 to the heat radiating part 62 as already described. On the other hand, the communication part 632 forms a low-temperature fluid flow path used when the working fluid 9 moves from the heat radiating part 62 to the heat receiving part 61.

  Thus, also in the solar power generation panel cooling device 6 according to the third embodiment, the communication part 63 causes the high-temperature fluid flow path (flow path formed by the communication part 631) and the low-temperature fluid flow path (communication part). 632 formed as separate flow paths. Therefore, like the solar power generation panel cooling device 5 in the second embodiment, in each communication portion 63, the working fluid 9 that moves toward the heat radiating portion 62 and the working fluid 9 that moves toward the heat receiving portion 61. Therefore, the movement of the working fluid 9 is stabilized.

  Moreover, the solar power generation panel cooling device 6 in the third embodiment forms the high-temperature fluid channel and the low-temperature fluid channel as separate channels without providing a check valve in the heat pipe 60. can do. However, similarly to the second embodiment, a configuration corresponding to the check valve 56 may be provided in the heat pipe 60.

  Furthermore, unlike the heat pipes 40 and 50 in the first and second embodiments, the heat pipe 60 in the third embodiment does not have a portion protruding (protruding) from the photovoltaic power generation panel (base material 3). Is arranged. In more detail, the part arrange | positioned in the highest position of the cooling device 6 for photovoltaic power generation panels is comprised so that it may become lower than the part arrange | positioned in the highest position of the base material 3. FIG. Thereby, size reduction of the solar power generation device 12 is implement | achieved.

<4. Fourth Embodiment>
FIG. 10 is a diagram illustrating a solar power generation device 13 according to the fourth embodiment. In FIG. 10, the solar power generation device 13 is assumed to be in a state where it is installed on the ground, a roof, or the like (a state where power generation is possible) by a pedestal (not shown) or the like. That is, in FIG. 10, the attitude | position at the time of operation | movement is shown about each structure of the solar power generation device 13. In FIG.

  The solar power generation device 13 according to the fourth embodiment is different from the solar power generation panel cooling device 4 in that the solar power generation panel cooling device 7 includes the solar power generation panel cooling device 7. Different from the power generation device 10. In the following description, with respect to the solar power generation device 13 in the present embodiment, the same components as those of the solar power generation device 10 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  The solar panel cooling device 7 includes a heat pipe 70 similar to the heat pipe 40 in the first embodiment. That is, the heat pipe 70 is also a tubular member made of a material having excellent thermal conductivity (for example, aluminum or copper). However, the pipe shape in the YZ plan view of the heat pipe 70 in the fourth embodiment (the winding shape 93 shown by a two-dot chain line in FIG. 10) is a substantially triangular shape.

  In addition, the heat pipe 70 is attached to the lower surface 31 of the base material 3 to thereby correspond to the heat receiving part 41, the heat radiating part 42, and the communication part 43 in the first embodiment, respectively. A communication portion 73 is formed. In other words, the solar panel cooling device 7 includes a heat receiving part 71, a heat radiating part 72, and a communication part 73.

  FIG. 11 is a view of the solar power generation device 13 according to the fourth embodiment as viewed from the lower surface 31 side of the substrate 3.

  As shown in FIGS. 10 and 11, in the solar power panel cooling device 7 according to the fourth embodiment, the working fluid 9 is formed by the heat pipe 70 (the heat receiving portion 71, the heat radiating portion 72, and the communication portion 73). A spirally wound flow path is formed. In other words, in the solar power panel cooling device 7 according to the fourth embodiment, a part of the heat pipe 70 is wound in a spiral shape (coil shape), so that the spiral flow path of the working fluid 9 is formed. Is formed.

  In the heat pipe 60 in the third embodiment, the winding shape 92 has a substantially rectangular shape, but in the heat pipe 70 in the fourth embodiment, the winding shape 93 has a substantially triangular shape as shown in FIG. ing.

  FIG. 12 is a schematic view showing a heat pipe 70 in the fourth embodiment. Also in the heat pipe 70, the first chamber 74 is formed by the circular heat receiving part 71, and the second chamber 75 is formed by the circular heat radiating part 72.

  That is, a portion corresponding to one side of the substantially triangular shape formed by the winding shape 93 of the heat pipe 70 is attached to the lower surface 31 of the base material 3 to receive heat from the base material 3 (photoelectric conversion element 2). The heat receiving part 71 is configured. The tubular heat receiving part 71 forms a first chamber 74.

  Further, a portion corresponding to the other side of the substantially triangular shape formed by the winding shape 93 of the heat pipe 70 is open to the atmosphere, and constitutes a heat radiating portion 72 that radiates heat. In particular, the heat radiation part 72 in the fourth embodiment is arranged so as to extend in a substantially vertical direction (a direction parallel to the Z axis). The tubular heat radiating portion 72 forms a second chamber 75.

  Further, a portion corresponding to another side (a side other than one side corresponding to the heat receiving portion 71 and the heat radiating portion 72) of the substantially triangular shape formed by the winding shape 93 of the heat pipe 70 is the heat receiving portion 71 and the heat radiating portion. 72 and a communication portion 73 (communication portion 732).

  Furthermore, the apex angle arranged at the highest position among the apex angles of the substantially triangular shape formed by the winding shape 93 of the heat pipe 70 connects the heat receiving portion 71 and the heat radiating portion 72, and the communication portion 73 (communication portion). 731).

  The communication portion 731 is arranged so that the working fluid 9 existing in the heat receiving portion 71 moves to the heat radiating portion 72 when the working fluid 9 moves upward in the first chamber 74 of the heat receiving portion 71. The working fluid 9 in the first chamber 74 heated by the heat receiving part 71 receiving heat has a reduced specific gravity and forms an upward flow. The working fluid 9 moved upward by this flow passes through the communicating portion 731 and smoothly moves to the heat radiating portion 72.

  The communication portion 732 is arranged such that the working fluid 9 existing in the heat radiating portion 72 moves to the heat receiving portion 71 when the working fluid 9 moves downward in the second chamber 75 of the heat radiating portion 72. . The working fluid 9 in the second chamber 75 cooled by the heat radiating unit 72 radiating heat has a high specific gravity and forms a downward flow by the action of gravity. The working fluid 9 moved downward by this flow passes through the communication portion 732 and smoothly moves to the heat receiving portion 71.

  As described above, also in the solar power panel cooling device 7, the working fluid 9 heated in the heat receiving portion 71 moves upward in the first chamber 74 of the heat receiving portion 71, so that it is directed toward the heat radiating portion 72. Move. Further, the working fluid 9 cooled in the heat radiating portion 72 moves toward the heat receiving portion 71 by moving downward in the second chamber 75 of the heat radiating portion 72. That is, as in the above embodiment, the working fluid 9 can be guided to a position suitable for heat transport so as to follow the convection direction of the working fluid 9 generated by heat reception and heat dissipation.

  In particular, since the communication portion 732 is disposed so as to extend in a substantially vertical direction (a direction parallel to the Z axis), the working fluid 9 having an increased specific gravity can smoothly move toward the heat receiving portion 71. is there.

  The communication portion 731 forms a high-temperature fluid flow path that is used when the working fluid 9 moves from the heat receiving portion 71 to the heat radiating portion 72. On the other hand, the communication part 732 forms a low-temperature fluid flow path used when the working fluid 9 moves from the heat radiating part 72 to the heat receiving part 71.

  Thus, also in the solar power generation panel cooling device 7 in the fourth embodiment, the communication part 73 causes the high-temperature fluid flow path (flow path formed by the communication part 731) and the low-temperature fluid flow path (communication part). 732) are formed as separate flow paths. Therefore, as in the solar panel cooling device 5 in the second embodiment and the solar panel cooling device 6 in the third embodiment, each communication portion 73 moves toward the heat radiating portion 72. Since the collision between the working fluid 9 that moves and the working fluid 9 that moves toward the heat receiving portion 71 is avoided, the movement of the working fluid 9 is stabilized.

  Further, the solar power panel cooling device 7 according to the fourth embodiment forms the high-temperature fluid channel and the low-temperature fluid channel as separate channels without providing a check valve in the heat pipe 70. can do. However, similarly to the second embodiment, a configuration corresponding to the check valve 56 may be provided in the heat pipe 70.

  Further, the heat pipe 70 in the fourth embodiment does not have a portion protruding (protruding) in the height direction from the photovoltaic power generation panel (base material 3), like the heat pipe 60 in the third embodiment. Are arranged as follows. In more detail, the part arrange | positioned in the highest position of the cooling device 7 for photovoltaic power generation panels is comprised so that it may become lower than the part arrange | positioned in the highest position of the base material 3. FIG. Thereby, size reduction of the solar power generation device 13 is implement | achieved.

  In addition, the heat pipe 70 in the fourth embodiment is arranged so as not to have a protruding (protruding) portion in the (+ Y) direction from the photovoltaic power generation panel (base material 3). More specifically, the portion disposed in the most (+ Y) direction of the solar panel cooling device 7 is more in the (−Y) direction than the portion disposed in the most (+ Y) direction of the substrate 3. It is configured to be arranged. Thereby, the solar power generation device 13 can be further downsized.

  Further, in the winding shape 93 of the heat pipe 70 in the fourth embodiment, the apex angle arranged at the lowest position is an acute angle. Thereby, the part of the heat pipe 70 (the part arranged in the range indicated by the range d in FIG. 10) arranged below the lowermost part of the photoelectric conversion element 2 is the third embodiment. Less than the heat pipe 60 in FIG. That is, since the part arrange | positioned below the part heated can be reduced, the residence amount of the working fluid 9 can be suppressed.

  Furthermore, the communication part 732 in the fourth embodiment is arranged such that the position in the Z-axis direction becomes lower as the heat receiving part 71 is approached. In other words, the communication part 732 is disposed in a posture inclined with respect to the horizontal plane (XY plane) so that the heat radiating part 72 side is high and the heat receiving part 71 side is low. As a result, the working fluid 9 whose specific gravity is increased by heat dissipation moves smoothly to the heat receiving portion 71.

<5. Fifth embodiment>
FIG. 13 is a diagram illustrating a solar power generation device 14 according to the fifth embodiment. In FIG. 13, the solar power generation device 14 is assumed to be in a state of being installed on the ground, a roof, or the like (a state where power generation is possible) by a pedestal (not shown) or the like. That is, in FIG. 13, the attitude | position at the time of operation | movement is shown about each structure of the solar power generation device 14. In FIG.

  The solar power generation device 14 according to the fifth embodiment is different from the solar power generation panel cooling device 7 in that the solar power generation panel cooling device 8 includes the solar power generation panel cooling device 8. This is different from the power generation device 13. In the following description, with respect to the solar power generation device 14 according to the present embodiment, the same components as those of the solar power generation device 13 are denoted by the same reference numerals, and description thereof is omitted as appropriate.

  The solar panel cooling device 8 includes a heat pipe 80 similar to the heat pipe 70 in the fourth embodiment. That is, the heat pipe 80 is also a tubular member made of a material having excellent thermal conductivity (for example, aluminum or copper). Moreover, the piping shape (winding shape 94 shown with a dashed-two dotted line in FIG. 13) in the YZ planar view of the heat pipe 80 in 5th Embodiment is a substantially triangle like 4th Embodiment.

  In addition, the heat pipe 80 is attached to the lower surface 31 of the base material 3 to thereby correspond to the heat receiving part 71, the heat radiating part 72, and the communication part 73 in the fourth embodiment, respectively. A communication portion 83 is formed. In other words, the solar panel cooling device 8 includes a heat receiving portion 81, a heat radiating portion 82, and a communicating portion 83.

  FIG. 14 is a view of the solar power generation device 14 according to the fifth embodiment as viewed from the lower surface 31 side of the substrate 3.

  As shown in FIGS. 13 and 14, in the solar power generation panel cooling apparatus 8 according to the fifth embodiment, the working fluid 9 is formed by the heat pipe 80 (the heat receiving portion 81, the heat radiating portion 82, and the communication portion 83). A spirally wound flow path is formed. In other words, in the solar power generation panel cooling device 8 according to the fifth embodiment, a part of the heat pipe 80 is wound in a spiral shape (coil shape), whereby the spiral flow path of the working fluid 9 is formed. Is formed.

  In the heat pipe 80 according to the fifth embodiment, as shown in FIG. 13, the winding shape 94 is substantially triangular.

  In the solar panel cooling device 7 according to the fourth embodiment, the spirally wound flow path is solar power generation in the portion of the winding shape 93 that forms the apex angle arranged at the lowest position. It bent in the direction away from the panel (base material 3). However, in the solar power panel cooling device 8 according to the fifth embodiment, the spiral shape of the spirally wound flow path 94 forms the apex angle arranged at the lowest position. The flow path wound around is bent in a direction along the photovoltaic power generation panel.

  FIG. 15 is a schematic diagram showing a heat pipe 80 according to the fifth embodiment. Also in the heat pipe 80, the first chamber 84 is formed by the tubular heat receiving portion 81, and the second chamber 85 is formed by the tubular heat radiating portion 82.

  That is, a portion corresponding to one side of the substantially triangular shape formed by the winding shape 94 of the heat pipe 80 is attached to the lower surface 31 of the base material 3 to receive heat from the base material 3 (photoelectric conversion element 2). The heat receiving part 81 is configured. The tubular heat receiving part 81 forms a first chamber 84.

  Further, a portion corresponding to the other side of the substantially triangular shape formed by the winding shape 94 of the heat pipe 80 is open to the atmosphere, and constitutes a heat radiating portion 82 that radiates heat. Further, the heat dissipating part 82 in the fifth embodiment is arranged so as to extend in a substantially vertical direction (direction parallel to the Z axis), similarly to the heat dissipating part 72 in the fourth embodiment. The tubular heat radiating portion 82 forms a second chamber 85.

  Further, a portion corresponding to another side (a side other than one side corresponding to the heat receiving portion 81 and the heat radiating portion 82) of the substantially triangular shape formed by the winding shape 94 of the heat pipe 80 is the heat receiving portion 81 and the heat radiating portion. 82 and a communication part 83 (communication part 832).

  Furthermore, the apex angle arranged at the highest position among the apex angles of the substantially triangular shape formed by the winding shape 94 of the heat pipe 80 connects the heat receiving portion 81 and the heat radiating portion 82, and the communication portion 83 (communication portion) 831).

  The communicating portion 831 is arranged so that the working fluid 9 existing in the heat receiving portion 81 moves to the heat radiating portion 82 when the working fluid 9 moves upward in the first chamber 84 of the heat receiving portion 81. The working fluid 9 in the first chamber 84 heated by the heat receiving portion 81 receiving heat has a low specific gravity and forms an upward flow. The working fluid 9 moved upward by this flow passes through the communication portion 831 and smoothly moves to the heat radiating portion 82.

  Further, the communication portion 832 is arranged so that the working fluid 9 existing in the heat radiating portion 82 moves to the heat receiving portion 81 when the working fluid 9 moves downward in the second chamber 85 of the heat radiating portion 82. . The working fluid 9 in the second chamber 85 cooled by the heat radiating unit 82 radiating heat has a higher specific gravity and forms a downward flow due to the action of gravity. The working fluid 9 moved downward by this flow passes through the communication portion 832 and smoothly moves to the heat receiving portion 81.

  Thus, also in the solar power generation panel cooling device 8 in the present embodiment, the same effect as that of the solar power generation panel cooling device 7 in the fourth embodiment can be obtained.

  Furthermore, in the solar power generation panel cooling device 8 according to the fifth embodiment, in the spiral shape of the flow path 94 of the flow path wound in the spiral, at the portion forming the apex angle arranged at the lowest position, The flow path wound around is bent in a direction along the photovoltaic power generation panel (base material 3). Therefore, the portion of the heat pipe 70 disposed below the portion disposed at the lowest position of the photoelectric conversion element 2 (portion disposed in the range indicated by the range d in FIG. 10) is significantly reduced. That is, since the part arrange | positioned below the part heated can be reduced, the residence amount of the working fluid 9 can further be suppressed.

<6. Modification>
The preferred embodiments of the present invention have been described above. However, the above-described preferred embodiments are merely examples, and the present invention is not limited to the above-described preferred embodiments. Deformation is possible.

  For example, the shape of the heat pipes 40, 50, 60, 70 is not limited to the shape shown in the above embodiment. For example, a square tube may be used instead of a circular tube.

  Further, the circulation shape (piping shape) of the heat pipes 40, 50, 60, 70 may be created by appropriately bending one straight pipe, or these parts are communicated with each other after a plurality of partial parts are produced. As such, it may be created by welding or the like.

  Further, the heat pipes 40, 50, 60, and 70 may be appropriately provided with heat radiation fins to improve the heat radiation effect.

  Moreover, the photoelectric conversion element 2 may be fixed to the upper surface 30 of the base material 3 as a plurality of plate-like structures. In that case, solar power generation panel cooling devices 4, 5, 6, and 7 may be provided corresponding to the respective structures.

  In the fourth and fifth embodiments, the example in which the winding shapes 93 and 94 of the heat pipes 70 and 80 are substantially triangular has been described. However, in order to make the apex angle arranged at the lowest position in the winding shape of the heat pipe an acute angle, it can be realized even if the winding shape is a rhombus, a parallelogram, or a trapezoid. That is, the winding shape is not limited to a substantially triangular structure.

10, 11, 12, 13, 14 Photovoltaic power generation device 2 Photoelectric conversion element 3 Base material 30 Upper surface 31 Lower surface 4, 5, 6, 7, 8 Solar power generation panel cooling device 40, 50, 60, 70, 80 Heat Pipes 41, 51, 61, 71 Heat receiving portions 42, 52, 62, 72 Heat radiating portions 43, 53, 531, 532, 63, 631, 632, 73, 731, 732, 83, 831, 832 communicating portions 44, 54, 64, 74, 84 First chamber 45, 55, 65, 75, 85 Second chamber 56 Check valve 9 Working fluid 90 Heat receiving area 91 Heat releasing area 92, 93, 94 Winding shape

Claims (11)

A heat receiving part forming a first chamber;
A heat dissipating part forming a second chamber;
A communication portion for communicating the first chamber and the second chamber;
With
Working fluid is sealed in the heat receiving portion, the heat radiating portion, and the communication portion,
The heat receiving part is attached in a state capable of conducting heat with respect to the photovoltaic power generation panel,
In the state where the heat receiving portion is attached to the photovoltaic power generation panel and the photovoltaic power generation panel is installed so as to be capable of generating power, the communication portion moves the working fluid upward in the first chamber. The working fluid present in the heat receiving portion is arranged to move to the heat radiating portion, and the working fluid present in the heat radiating portion is moved to the heat receiving portion by moving the working fluid downward in the second chamber. The cooling device for photovoltaic power generation panels arranged to move to the section. A solar panel cooling device according to claim 1,
The communication part is
A high-temperature fluid flow path used when the working fluid moves from the heat receiving section to the heat radiating section, and a low-temperature fluid flow path used when the working fluid moves from the heat radiating section to the heat receiving section. Cooling device for photovoltaic power generation panel formed separately. A solar panel cooling device according to claim 2,
The communication unit is a solar power panel cooling device including a check valve that defines a moving direction of the working fluid. It is the cooling device for photovoltaic power generation panels in any one of Claims 1 thru | or 3, Comprising:
In the state where the heat receiving unit is attached to the solar power generation panel, the heat radiation unit is a solar panel cooling device disposed above the heat receiving unit. It is a cooling device for photovoltaic power generation panels according to claim 4,
A solar power panel cooling device in which a plate-like flow path for the working fluid is formed by the heat receiving portion, the heat radiating portion, and the communication portion. It is a cooling device for photovoltaic power generation panels according to claim 2 or 3,
A solar panel cooling device in which a spirally wound flow path of the working fluid is formed by the heat receiving portion, the heat radiating portion, and the communication portion. It is a cooling device for photovoltaic power generation panels according to claim 6,
The solar power generation panel cooling device in which the apex angle arranged at the lowest position is an acute angle in the spiral shape of the flow path wound in the spiral shape. The solar power panel cooling device according to claim 6 or 7,
Sunlight in which the spirally wound flow path bends in a direction along the photovoltaic power generation panel at a portion forming the apex angle arranged at the lowest position in the spirally wound flow path. Cooling device for power generation panel. A solar panel cooling device according to any one of claims 6 to 8,
A cooling device for a photovoltaic power generation panel, wherein the spirally wound flow path has a substantially triangular shape. A solar panel cooling device according to any one of claims 6 to 9,
In the state where the heat receiving portion is attached to the photovoltaic power generation panel and the photovoltaic power generation panel is installed so as to be able to generate power, the heat dissipation portion is disposed so as to extend in a substantially vertical direction. Cooling system. A photoelectric conversion element that converts sunlight into electricity;
A base material for fixing the photoelectric conversion element;
A solar panel cooling device fixed to the substrate;
With
The solar panel cooling device is
A heat receiving part forming a first chamber;
A heat dissipating part forming a second chamber;
A communication portion for communicating the first chamber and the second chamber;
With
Working fluid is sealed in the heat receiving portion, the heat radiating portion, and the communication portion,
In the state where the photoelectric conversion element is installed so as to be able to generate power, the communication part moves the working fluid present in the heat receiving part to the heat radiating part by moving the working fluid upward in the first chamber. The photovoltaic power generator is arranged so that the working fluid existing in the heat radiating portion moves to the heat receiving portion when the working fluid moves downward in the second chamber.

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