JP2015224454A - Mounting structure for solar battery panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure for a solar battery panel, which enables efficient discharge of heat on the back side of the solar battery panel.SOLUTION: In a mounting structure for mounting a solar battery panel 3 via a support crosspiece part 2 on an inclined roof 1 of a building, transverse frames 4a and 4b supporting the solar battery panel 3 and fixed onto the support crosspiece part 2 are each provided with a vent hole 410 for making air pass in an eaves-ridge direction D1 of the inclined roof 1. An air flow F2 in an upper area within an air space 7 is generated through the vent hole 410.

Description

  The present invention relates to a solar cell panel mounting structure, and more particularly to a technique for creating an air flow on the back side of a solar cell panel.

  As disclosed in Patent Document 1, as a structure for attaching a solar cell panel to an inclined roof, a support frame is fixed to the inclined roof, and a frame attached so as to support an edge of the solar cell panel is attached to the support frame. An attachment structure for fixing on a part is known.

JP 2011-106121 A

  In the conventional mounting structure described above, a through hole is provided in the support bar, and drainage and ventilation are performed on the inclined roof through the through hole.

  In the conventional mounting structure, air is ventilated through the through-hole in the support beam, so that the air flow between the solar cell panel and the inclined roof flows on the side away from the solar cell panel (below the inclined roof). Side flow). Therefore, the conventional mounting structure had the subject that it was difficult to discharge | emit the heat | fever on the back surface side of a solar cell panel efficiently by the flow of air.

  This invention is invention which solves the said subject, and it aims at providing the attachment structure of the solar cell panel which can discharge | emit efficiently the heat | fever of the back surface side of a solar cell panel.

  In order to solve the above problems, the present invention provides a solar cell panel mounting structure having the following configuration.

  The present invention is a solar cell panel mounting structure including a solar cell panel, a support bar, a frame, and an air layer. The solar panel is attached to an inclined roof of a building. The support bar is fixed to the inclined roof. The frame supports an edge of the solar cell panel and is fixed on the support bar. The air layer is formed between the solar cell panel and the inclined roof. The frame has a vent hole that allows air to pass in the direction of the eaves of the inclined roof.

  The present invention has an effect that heat on the back side of the solar cell panel can be efficiently discharged.

It is a schematic perspective view of the building provided with the attachment structure of the solar cell panel of one Embodiment of this invention. It is a disassembled perspective view of the principal part of the attachment structure of the solar cell panel of one Embodiment of this invention. FIG. 3A is a plan view of a solar cell panel to which a frame used in the solar cell panel mounting structure of one embodiment of the present invention is attached, and FIG. 3B is a solar cell panel mounting structure of one embodiment of the present invention. It is a side view of the solar cell panel which attached the frame to be used. It is the sectional view on the AA line of FIG. It is B sectional drawing of FIG. 6A is an enlarged view of the main part of FIG. 4, FIG. 6B is an enlarged view of the other main part of FIG. 4, FIG. 6C is an enlarged view of the main part of FIG. 5, and FIG. FIG.

  The present invention will be described based on embodiments shown in the accompanying drawings.

  1 to 6 show a solar cell panel mounting structure according to an embodiment of the present invention.

  The attachment structure of this embodiment is a structure which arrange | positions several solar cell panel 3,3 ... on the inclined roof 1 of a building, as shown in FIG.

  In the following text, the inclined direction of the inclined roof 1 is referred to as “eave building direction D1”, the lower side of the eave building direction D1 is referred to as “eave side”, and the upper side of the eave building direction D1 is referred to as “building side”. A direction orthogonal to the eaves-ridge direction D1 in plan view is referred to as a “lateral direction D2”.

  As shown in FIG. 2 etc., in the mounting structure of this embodiment, the several base board 10 is arrange | positioned on the upper surface of the inclined roof 1 of a building. A plurality of the base plates 10 are continuously provided along the eave building direction D1, and a plurality of the base plates 10 are provided continuously along the lateral direction D2.

  On each base plate 10, the support bar 2 is fixed with screws or the like so that the lateral direction D <b> 2 is the longitudinal direction. The support crosspiece 2 has a water passage hole 20 penetrating in the eaves-ridge direction D1.

  In the present embodiment, the plurality of support bars 2 are positioned at a predetermined interval in the eaves building direction D1, and the plurality of support bars 2 are continuous in a straight line along the horizontal direction D2. The solar cell panel 3 is installed so as to be bridged between the support bars 2 adjacent to the eaves-ridge direction D1.

  As shown in FIG. 3A, FIG. 3B, etc., a rectangular frame-like frame 4 is attached to the periphery of the solar cell panel 3 having a rectangular outer shape.

  As shown in FIG. 6A to FIG. 6D and the like, the frame 4 extends downward from the support portion 40 and a support portion 40 provided in a U-shaped cross section so as to fit and support the edge portion 30 of the solar cell panel 3. And a lower frame portion 41 having the shape described above. The lower frame portion 41 has a plurality of vent holes 410 penetrating in the eaves-ridge direction D1.

  More specifically, the frame 4 having a rectangular frame-like outer shape as a whole has a straight eave-side horizontal frame 4a and a straight ridge-side horizontal frame 4b (see FIG. 3A). . The eaves-side horizontal frame 4a and the ridge-side horizontal frame 4b are positioned in parallel to each other. The frame 4 further includes a pair of vertical frames 4c and 4c that connect the ends of the horizontal frames 4a and 4b.

  A portion of the support portion 40 included in the eaves side horizontal frame 4 a supports the eaves side edge 30 a of the edge 30 of the solar cell panel 3. A portion included in the ridge-side horizontal frame 4 b of the support portion 40 supports the ridge-side edge portion 30 b of the edge portion 30 of the solar cell panel 3.

  The lower frame portion 41 which is the lower portion of the frame 4 includes an eave side lower frame portion 41a which is a lower portion of the eave-side horizontal frame 4a and a ridge-side lower frame which is a lower portion of the ridge-side horizontal frame 4b. Part 41b.

  Both the eaves-side lower frame portion 41a and the ridge-side lower frame portion 41b have a plurality of vent holes 410 at predetermined intervals in the left-right direction D2 (see FIGS. 3A and 3B).

  The number of vent holes 410 included in the eaves-side lower frame portion 41a is the same as the number of vent holes 410 included in the ridge-side lower frame portion 41b. Moreover, the distance between the vent holes 410 and 410 which the eaves side lower frame part 41a has is provided in the same way as the distance between the vent holes 410 and 410 which the ridge side lower frame part 41b has.

  As shown in FIG. 4 and the like, in a state where a plurality of solar battery panels 3, 3... Are arranged on the inclined roof 1, the support rail portion 2 located closest to the eaves side includes the eaves end cover 60 and the eaves end cover 60. The eaves-side horizontal frame 4a that supports the solar cell panel 3 that is positioned is attached and fixed using bolts (not shown).

  On the support bar 2, a predetermined gap 50 is positioned in the eave building direction D <b> 1 between the attached eaves cover 60 and the lateral frame 4 a, and by inserting the cover 62 from above, The upper part is sealed watertight.

  A horizontal frame 4b on the ridge side that supports the solar panel 3 located on the most ridge side and a ridge cover 61 are attached and fixed to the support rail portion 2 located on the most ridge side using bolts (not shown). The

  On the support bar 2, a predetermined gap 51 is positioned in the eaves-ridge direction D <b> 1 between the attached and fixed horizontal frame 4 b and the building cover 61, and the cover 63 is fitted from above so that the gap 51 The upper part of is sealed watertight.

  Further, in the present embodiment, an airtight material 80 that hermetically seals the gap 51 is provided. The airtight member 80 is interposed between the ridge cover 61 and the gap 51 (see FIG. 6B).

  The support frame 2 other than the support frame 2 on the most eaves side and the support frame 2 on the most building side includes a horizontal frame 4b of the solar cell panel 3 located on the eave side and a solar cell positioned on the building side. The horizontal frame 4a of the panel 3 is attached and fixed using a bolt (not shown) (see FIG. 6A).

  On the support bar 2, a predetermined gap 52 is located in the eaves-ridge direction D1 between the attached and fixed horizontal frames 4a and 4b. By fitting the cover 64 into the gap 52 from above, the upper part of the gap 52 is sealed watertight.

  In the present embodiment, an airtight material 81 that hermetically seals the gap 52 is provided. The airtight member 81 is interposed between the cover 64 and the horizontal frame 4b of the solar cell panel 3 located on the eaves side, and between the cover 64 and the horizontal frame 4a of the solar cell panel 3 located on the ridge side. Intervene in between.

  Furthermore, in this embodiment, as shown in FIG. 5 and FIG. 6C, between the solar cell panels 3 and 3 adjacent to the horizontal direction D2, the adjacent solar cell panels 3 and 3 are hermetically sealed. An airtight material 82 to be stopped is interposed. The airtight member 82 is disposed on the back side of the cover 65 that seals the gap between the frames 4 and 4 of the adjacent solar cell panels 3 and 3 in a watertight manner.

  5 and 6D, the vertical frame 4c of the solar cell panel 3 positioned at the end in the horizontal direction D2, and the side cover 66 positioned on the inclined roof 1 adjacent to the solar cell panel 3 An airtight member 83 is interposed between the two.

  When a plurality of solar battery panels 3, 3... Are attached to the inclined roof 1 in the mounting structure of the present embodiment, each solar battery panel 3 is positioned in parallel to the inclined roof 1. An air layer 7 as shown in FIG.

  Of the solar cell panels 3 and 3 adjacent to the eaves building direction D1, the air layer 7 below the eaves side solar cell panel 3 (hereinafter referred to as “eave side air layer 70”) and the solar cell panel on the building side. The air layer 7 below 3 (hereinafter referred to as “building side air layer 71”) communicates with the eaves building direction D1 through the water passage hole 20 (see FIG. 2) of the support bar 2.

  Therefore, as shown by arrows in FIG. 4 and FIG. 6A, an air flow F <b> 1 that moves from the eaves-side air layer 70 to the ridge-side air layer 71 through the water passage hole 20 is generated. The air flow F <b> 1 here is a flow in which the air heated on the back side of the solar cell panel 3 moves to the ridge side along the inclined roof 1.

  The air flow F <b> 1 moves to the ridge side along the inclined roof 1 in a region (lower region) closer to the inclined roof 1 in the eaves-side air layer 70 and the ridge-side air layer 71.

  In addition, the eaves-side air layer 70 and the ridge-side air layer 71 include a vent 410 included in the horizontal frame 4b on the support bar 2, and a vent 410 included in the horizontal frame 4a on the support bar 2. It communicates with the eaves-ridge direction D1 through the gap 52 between the adjacent horizontal frames 4b, 4a.

  Therefore, as indicated by arrows in FIGS. 4 and 6A, an air flow F2 is generated that moves from the eaves-side air layer 70 to the ridge-side air layer 71 through the vent holes 410, 410 and the gaps 52 on both sides.

  The air flow F <b> 2 generated here is a region (upper region) closer to each solar cell panel 3 in the eaves-side air layer 70 and the ridge-side air layer 71 along the back surface of each solar cell panel 3. It is a flow that moves to the building side.

  Although the temperature of each solar cell panel 3 becomes high at the time of sunlight, in this embodiment, the air flow F1 occurs in the lower region near the inclined roof 1, and the air flows in the upper region near the back surface of each solar cell panel 3. Therefore, the temperature rise of each solar cell panel 3 is effectively suppressed.

  In addition, in the present embodiment, the air layer 7, which is located in communication with each other between the solar cell panels 3, 3... And the inclined roof 1, due to the airtight structure using the airtight members 80, 81, 82, 83. 7 is provided, and a blower mechanism 9 for forcibly flowing the air in the air layers 7, 7. The airtight structure enhances the airtightness between the adjacent solar cell panels 3 and 3 with the airtight materials 81 and 82 and the like, and enhances the airtightness between the solar cell panel 3 and the side cover 66 with the airtight material 83 and the like. In this structure, the airtightness between the solar cell panel 3 and the building cover 61 is enhanced by the airtight material 80 or the like.

  As shown in FIG. 4, the air blowing mechanism 9 of the present embodiment includes an intake port 90 that opens a part of the inclined roof 1, an intake passage 91 that continues downward from the intake port 90, and air in the intake passage 91. And a fan (not shown) that draws The air inlet 90 is located below the solar cell panel 3 located closest to the ridge.

  The air blowing mechanism 9 drives the fan to forcibly draw the air in the air layer 7 below the solar cell panel 3 positioned closest to the building side into the building. As a result, the integrated air flow from the eave side to the ridge side under the entire panel block in which a plurality of solar battery panels 3, 3. This is a structure generated by

  As described above, the mounting structure of the present embodiment includes the solar cell panel 3 attached to the inclined roof 1 of the building, the support bar 2 fixed to the inclined roof 1, the frame 4, and the solar cell panel 3. An air layer 7 formed between the roof 1 and the roof 1 is provided. The frame 4 supports the edge 30 of the solar cell panel 3 and is fixed on the support bar 2. The frame 4 has an air vent 410 that allows air to pass in the eaves-ridge direction D1 of the inclined roof 1.

  According to the mounting structure of the present embodiment, the air flow F <b> 2 that moves toward the ridge is generated in the upper region along the back surface of the solar cell panel 3 through the vent hole 410 formed through the frame 4. The temperature rise of the panel 3 can be effectively suppressed.

  Furthermore, the mounting structure of the present embodiment includes a blower mechanism 9 that forcibly sends the air in the air layer 7 toward the building.

  Therefore, according to the mounting structure of the present embodiment, the air flow F2 in the upper region of the air layer 7 can be generated with a large air volume, and as a result, the temperature rise of the solar cell panel 3 is more effective. Can be suppressed.

  Furthermore, the mounting structure of this embodiment includes an airtight structure that increases the airtightness of the air layer 7.

  Therefore, in this embodiment, the air flow F <b> 2 that suppresses the temperature rise of the solar battery panel 3 can be generated uniformly along the eaves-ridge direction D <b> 1 in the air layer 7. As a result, the temperature rise of the solar cell panel 3 can be further efficiently suppressed.

  Table 1 below shows the results of experiments conducted by the present inventors in an artificial weather chamber.

  In this experiment, the solar cell panels 3, 3,... Are attached in a matrix along the eave building direction D1 and the lateral direction D2 on the inclined roof 1, and the solar cell panels 3, 3,. The average temperature of the solar cell panels 3, 3... Was measured while keeping the room temperature at 33 ° C. for a long time.

  The specification B shown in Table 1 does not provide the air vent 410 in the frame 4 as in the present embodiment, does not perform forced air blowing by the air blowing mechanism 9, and further airtight structures such as the airtight materials 80, 81, 82, 83, etc. This is the so-called current specification. As a result of conducting an experiment with the current specification B, the average temperature of the solar cell panels 3, 3... Was 74.8.degree. The column of temperature comparison in Table 1 shows a comparison with the average temperature in the specification B.

The specifications A1 to A3 shown in Table 1 are specifications in which the ventilation holes 410 are provided in the frame 4. In the specification A2, the blowing mechanism 9 performs forced blowing of 50 m ³ / h, and in the specification A3, the blowing mechanism 9 performs forced blowing of 50 m ³ / h, and the airtight materials 80, 81, 82, An airtight structure such as 83 is provided. The specification A3 is the same structure as the mounting structure of the present embodiment shown in FIGS.

  As can be seen from the comparison between the specification B and the specification A1, the panel average temperature was lowered by 0.4 ° C. compared with the current specification B by providing the ventilation holes 410 in the frame 4. This is because the warmed air flows toward the building along the back surface of the solar cell panel 3 and the air flow F2 in the upper region of the air layer 7 is generated, so that the temperature rise of the solar cell panel 3 is suppressed. It is thought.

  As can be seen from the comparison between the specification B and the specification A2, the frame 4 is provided with the air vent 410 so that the air flow F2 can be generated, and then the forced air blowing is performed by the air blowing mechanism 9, so that the panel average The temperature dropped by 3.8 ° C. It can be considered that this is because the temperature increase of the solar cell panel 3 is further suppressed by generating the air flow F2 flowing toward the ridge along the back surface of the solar cell panel 3 with a forced air volume.

Although not shown in Table 1, the panel average temperature is 73.2 even when forced air is blown at 50 m ³ / h by the air blowing mechanism 9 in the structure in which the ventilation hole 410 is not provided in the frame 4. The panel average temperature decreased by 1.6 ° C. compared to the current specification B. However, it is less than half compared with the temperature drop (3.8 ° C.) in the specification A2. Also from this result, when the frame 4 is provided with the vent 410 to generate the air flow F2, the high temperature It turns out that the suppression effect is acquired.

  As can be seen from the comparison between the specification B and the specification A3, the frame 4 is provided with a vent hole 410 so that an air flow F2 can be generated, and forced air is blown by the air blowing mechanism 9, and the airtight materials 80, 81, 82 are provided. , 83, etc., the panel average temperature decreased by 4.1 ° C. This is because the air blowing mechanism 9 and the airtight structure are provided, so that the air layers 7, 7... Below the plurality of solar cell panels 3, 3. As a result, it is thought that the temperature of the solar cell panels 3, 3.

  As mentioned above, although this invention was demonstrated based on embodiment shown to an accompanying drawing, this invention is not limited to the said embodiment. Within the range intended by the present invention, appropriate design changes can be made.

DESCRIPTION OF SYMBOLS 1 Inclined roof 2 Supporting frame part 3 Solar cell panel 30 Edge part 4 Frame 410 Ventilation hole 7 Air layer 9 Blowing mechanism D1 Eaves building direction F2 Air flow

Claims (3)

Solar panels attached to the sloped roof of the building,
A support bar fixed to the inclined roof;
A frame that supports an edge of the solar cell panel and is fixed on the support bar;
An air layer formed between the solar cell panel and the inclined roof,
The mounting structure of a solar cell panel, wherein the frame has a vent hole that allows air to pass in the direction of the eaves of the inclined roof. The solar cell panel mounting structure according to claim 1, further comprising a blower mechanism that forcibly sends air in the air layer toward the ridge side. The solar cell panel mounting structure according to claim 2, further comprising an airtight structure that increases the airtightness of the air layer.

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