JPH09235845A - Cooling structure of solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid any drop in the extent of generating efficiency due to a temperature rise by cooling a solar cell module effectively without entailing any special power supply to this module subjected to insulation. SOLUTION: In a unit building 2, a central ventilation system is generally used, and plural pieces of solar cell modules 1 are attached to a roof surface. At that time, a cooling vent layer B is installed in the backside of each of these solar cell modules 1. Next, this cooling vent layer B and an exhaust duct 25c exhausting the inside air of respective roans 21 and 22 both are interconnected through, therefore this exhaust duct 25c is connected thereto, and then a centralized ventilation fan 3 is installed in a vent hole piercing through a roof panel of an eaves side roof unit 23a. With this centralized ventilation fan 3, relatively cold inside air in these roans 21 and 22 is forcibly exhausted by way of the cooling vent layer B. At that time, its heat exchange is carried out with each of these solar cell modules 1.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a cooling structure for a solar cell module installed on the roof of a building such as a house.

[0002]

2. Description of the Related Art In recent years, a panel-shaped solar cell module has been installed on a roof of a house or the like to protect a clean solar environment due to serious problems of global environment and energy depletion caused by increased consumption of fossil fuels. Attention has been paid to a solar power generation system for homes that directly extracts electric power from energy and supplies it to homes. By the way, the solar cell module generates electricity by sunlight, but if the temperature of the solar cell module rises by absorbing solar heat, the power generation efficiency will decrease. In order to prevent the temperature increase of the solar cell module, conventionally, as described in, for example, JP-A-59-175168, there is a gap between the solar cell module and the ground plate (roof material). Is provided, and the solar cell module is cooled by natural ventilation.

[0003]

However, in the method of cooling the solar cell module described in the above publication, since the method relies on natural ventilation, the cooling effect is small on a day when the wind is weak,
Especially when there is strong sunlight in the summer and there is no wind,
It is not possible to suppress the temperature rise of the solar cell module,
Therefore, there is a drawback that the power generation efficiency of the solar cell module is reduced.

The present invention has been made in view of the above circumstances, and is effective without applying special power to a solar cell module installed on the roof surface of a house or the like and exposed to sunlight. An object of the present invention is to provide a cooling structure for a solar cell module that can be cooled to avoid a decrease in power generation efficiency due to a rise in temperature.

[0005]

In order to solve the above problems, a cooling structure for a solar cell module according to the invention of claim 1 has a ventilation system including at least one ventilation fan device, and a roof surface. In the building where the solar cell module is attached to, a ventilation layer for cooling the solar cell module is provided between the solar cell module and the roof surface, and the ventilation layer for cooling the solar cell module and the ventilation system A structure in which the indoor air is forcedly exhausted through the ventilation layer for cooling the solar cell module by communicating with the exhaust path and providing the at least one ventilation fan device on the exhaust path Is characterized by.

The invention according to claim 2 is the cooling structure for a solar cell module according to claim 1, wherein the ventilation fan device is used for a central ventilation system for totally ventilating the building. It is characterized by being a fan device.

Further, the cooling structure for a solar cell module according to a third aspect of the present invention is a building in which a ventilation space is provided in an arbitrary wall, and the solar cell module is mounted on a roof surface. Provide a ventilation layer for cooling the solar cell module between the solar cell module and the roof surface, to form a ventilation path by connecting the ventilation layer for cooling the solar cell module and the ventilation space in the wall, By providing at least one ventilation fan device at a predetermined position on the ventilation path, the air in the ventilation space in the wall is forcedly exhausted to the outside through the ventilation layer for cooling the solar cell module. The feature is that it is configured to.

According to a fourth aspect of the present invention, in the solar cell module cooling structure according to the third aspect, the ventilation space in the wall is connected to the outside of the building or an underfloor space through a ventilation port. It is characterized by being in communication.

The invention according to claim 5 is the cooling structure for a solar cell module according to claim 3 or 4, wherein the ventilation fan device includes a ventilation layer for cooling the solar cell module and the inside of the wall. It is characterized in that it is provided at a connecting portion with the ventilation space.

Further, the invention according to claim 6 is the cooling structure for a solar cell module according to claim 1, 2, 3, 4 or 5, wherein the ventilation layer for cooling the solar cell module is the building. The air is sent from the eaves side by the ventilation fan device, and the sent air is discharged from the ridge side.

[0011]

According to the structure of the present invention, a ventilation layer for cooling the solar cell module is provided between the solar cell module mounted on the roof surface of the building and the roof surface, and the solar fan module is forcibly forced by the ventilation fan device. Since the ventilation layer for cooling the battery module is ventilated to promote the heat radiation of the solar cell module by heat exchange, the solar cell module can be cooled reliably and evenly. Therefore, it is possible to maintain the power generation efficiency of the solar cell module without lowering it and improve the durability of the solar cell module.

More specifically, according to the structure of the first aspect, the ventilation layer for cooling the solar cell module communicates with the exhaust path of the ventilation system of the building. After the inside of the building is ventilated by operation, relatively cool air is blown onto the solar cell module to perform heat exchange, so that the solar cell module can be efficiently cooled. Also,
The polluted air used for ventilation can be effectively used for cooling the solar cell module without throwing it away, and it is not necessary to input special power.

According to the second aspect of the present invention, since the fan device for the central ventilation system is used as the ventilation fan device, the relatively cool air discharged from each room of the building is the fan device. After being collected on a relatively large scale by the above, heat is exchanged by being sprayed onto the solar cell module, so that the solar cell module can be cooled more efficiently and the air in the contaminated building can be cooled. Can be used more effectively.

According to the third aspect of the present invention, the ventilation layer for cooling the solar cell module communicates with the ventilation space in the wall of the building to form a ventilation path. After the ventilation space in the wall is ventilated by operation of the device to prevent dew condensation, relatively cool air is blown to the solar cell module to perform heat exchange, so that the solar cell module is efficiently Can be cooled. Similarly, the polluted air used for ventilation can be effectively used.

Further, according to the structure of claim 4, since the ventilation space in the wall is communicated with the outdoor space or the underfloor space of the building through the ventilation hole, the ventilation fan device is operated. Since the air taken in from the outside or the underfloor space is used to prevent dew condensation by ventilating the ventilation space in the wall, it can be used for cooling the solar cell module, so that the cooling is efficiently performed. It can be carried out.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. First Embodiment FIG. 1 is a sectional view showing a schematic configuration of a two-story detached unit building in which a cooling structure for a solar cell module according to a first embodiment of the present invention is implemented. 2 is a cross-sectional view showing a passage for the solar cell module, FIG.
Fig. 4 is a cross-sectional view showing how the solar cell module is installed on the roof surface, and Fig. 4 shows a central ventilation fan applied to the central ventilation system adopted in the unit building is attached to the roof panel of the unit building. It is sectional drawing which shows the appearance. As shown in FIGS. 1 and 2, the cooling structure of the solar cell module in this example is a unit building 2 in which a central ventilation system is adopted and the solar cell modules 1, 1, ... Are mounted on the roof surface.
Embodied in. Here, each solar cell module 1
On the back side, a cooling ventilation layer B for cooling the solar cell module 1 by heat exchange is provided, and the cooling ventilation layer B and the exhaust path of the central ventilation system are in communication with each other. A centralized ventilation fan 3 is provided on the exhaust path for forcibly exhausting the indoor air via the cooling ventilation layer B between each solar cell module 1 and the roof surface.

First, the unit building 2 of this example will be described. The unit building 2 is a unit building related to a two-story detached building in which the solar cell modules 1, 1, ... Are installed on the roof surface, and constitutes each room such as a living room, a dining room, and a bedroom. Units 21a, 22a, ...
Roof units 23a, 23 constituting the roof part of the building
b, 23c, ... In addition, these units are produced in advance in factories, transported to a construction site, constructed and assembled to be high-quality hermetic houses in order to increase the industrial production rate of buildings. In the assembling, first, the building units 21a, 21b, ... Are installed on the foundation and connected to each other to form the lower floor part of the building including the living rooms 21, 21 ,. Building units 22a, 2
2b, ... Are stacked and connected to each other to form an upper floor part of a building composed of living rooms 22, 22, etc. Further, roof units 23a, 23b, 23c, ... Are installed and connected to each other on the upper part of the upper floor part. Done by.

The building units 21a, 22a, ...
A large beam made of grooved steel is spanned between the upper and lower ends of the four corner pillars made of square steel pipe, and a plurality of small beams are further spanned between the large beams to form a box-shaped steel frame body. A plurality of studs (studs) are attached, and further, various floor panels, outer walls, and ceiling sections are adhered with various panel materials having no gaps such as node holes and therefore having high airtightness. In the building units 21a, 22a, ...
a, 24b, ..., A plurality of studs that are erected at a predetermined interval, an outer wall panel material such as a hard wood chip cement plate or an ALC plate that is attached to the outside of the stud, and an inside of the stud. It is roughly composed of an inner wall panel material such as gypsum board, and a heat insulating material such as glass wool is filled between the outer wall panel material and the inner wall panel material. A gasket is inserted in the joint gap between the outer wall panel material and the outer wall panel material,
This prevents rain and wind from entering the building through the joint gap. The outer wall portions 24a, 24b, ... Are provided with window openings and entrance openings as required,
A packing material is attached to the peripheral edge of the door or the fitting frame so that no gap is created between the movable doors or between the door and the fitting frame. In addition, also in the floor portion and the ceiling portion, a heat insulating material is laid on the lower surface of the floor panel material and the upper surface of the ceiling panel material.

Further, the roof units include eaves side roof units 23a and 23c and a ridge side roof unit 23b, and solar cell modules 1, 1 are provided on the south side of the south side eaves side roof unit 23a and the ridge side roof unit 23b. ... is installed. In addition, the eaves side roof unit 23
Each of a and 23c is roughly composed of one roof panel, a pair of truss beams supporting both gable side ends of the roof panel, a gable small wall panel attached to each gable truss, and an eaves ceiling panel. In addition, the ridge-side roof unit 23b includes two roof panels, a pair of wife trusses that support both gable side ends of these roof panels, and a gable small wall panel attached to each gable truss,
It is roughly composed of purlins. In the roof panel, as shown in FIG. 3, a waterproof sheet 232 such as asphalt roofing is laid on the upper surface of a base plate (roof base material) 231 such as structural plywood or particle board, and further vinyl chloride is provided on the upper surface of the waterproof sheet. A ridge-side roof unit 23c and a ridge-side roof unit 2 on the north side, which are configured by adhering a non-combustible coating material 233 such as a steel plate (polyvinyl chloride metal laminated plate), to which the solar cell module 1 is not attached
A roof finishing material such as a slate is provided on the roof surface on the north side of 3b. In addition, the eaves side roof unit 23a on the south side
A ventilation hole Ha for communicating the cooling ventilation layer B with the exhaust path of the central ventilation system in the vicinity of the eaves of
Is pierced.

The solar cell modules 1, 1, ... Include the south side eaves side roof unit 23a and the ridge side roof unit 23b.
Of the solar modules 1 using the long mounting members 4, 4, ... Arranged in parallel to the flow direction of the roof surface and at a predetermined interval on the noncombustible coating material 233 in the area on the south side of the solar module 1. The cooling ventilation layer B is installed so as to be formed between the bottom surface and the roof surface, and the air flow is generated in the end direction. In addition, the solar cell modules 1, 1, ...
The long end member 4a for closing the opening below the end on the downstream side of the ridge is parallel to the direction orthogonal to the flow direction so that the predetermined portion of the side surface on the ridge side is the attachment member. 4,
The upper surface is attached to the eaves side end of 4, and the upper surface is attached to a fixed piece of each of the solar cell modules 1 described below, and the lower surface is in contact with the roof surface. In addition, a partition member 4b for stopping the flow of rainwater from the ridge side is provided at a site on the eaves side between the adjacent mounting members 4 and 4 in a direction in which the lengthwise direction is orthogonal to the flow direction of the roof surface. They are mounted so that they are parallel to each other.

Further, each solar cell module 1 has a large number of single crystal silicon solar cells (pn junction elements) 11, 11, ... As described above, a transparent support substrate 12 such as white tempered glass having excellent light transmittance and impact strength, a filler 13 such as EVA (ethylene vinyl acetate) having excellent moisture resistance, and PVF (vinyl fluoride) having excellent insulation properties. The panel-shaped module main body is formed by packaging (encapsulating) the metal sheet 14 whose both surfaces are coated with a resin) in a layered structure, and the peripheral edge of the formed module main body is covered with an aluminum frame 15. It is surrounded.

The frame body 15 is composed of a pair of vertical frames and horizontal frames, and a groove having a U-shaped cross section for fitting and holding the module main body is provided on the inner surface of each frame. These vertical frame and horizontal frame are joined to each other after being fitted to the peripheral edge of the module body. In addition, a fixing piece K for engaging and fixing the solar cell module 1 to the upper surface of the corresponding mounting member 4 is extended outward in each of the vertical frames and the horizontal frames. Each fixing piece K is provided with some screw holes. Then, the joining screws N, N, ... Are inserted through the screw holes of the respective fixing pieces K and screwed into the rafter 234 immediately below the roof panel to firmly fix the respective solar cell modules 1.

The mounting members 4, 4, ... Are pedestals for mounting and fixing the solar cell modules 1, 1, ... On the roof surface (upper surface of the roof panel). As shown in FIG. ) 41, an incombustible coating material 42 such as a vinyl chloride steel plate is attached, and further fixed to each other with a fixing tool (not shown) such as a male screw. In this example, five mounting members 4, 4, ... Are used, and these mounting members 4, 4 ,.
Is a tree 2 which is a predetermined distance from each other and extends in the direction of the wife.
They are arranged directly above 34. Also, cutouts 43, 43, 43 for ventilation are provided near the eaves side ends of the three mounting members 4, 4, 4 excluding the mounting members 4, 4 arranged on the most west and east sides. Has been. Also,
Except for the mounting member 4 installed on the most west side, the four mounting members 4, 4, ... At the side where the partition members 4b, 4b, .. Notch portions 44, 44 for discharging the rainwater dammed by the partition members 4b, 4b, ... To the east side of the roof surface.
... are provided. Further, each partition member 4b is provided with a notch M in the upper part of the central portion to allow ventilation.

As shown in FIG. 1, in the unit building 2 having the above-mentioned structure, the outside wall 24a of each living room 21 on the lower floor and the outer wall 24b of each living room 22 on the upper floor are filled with fresh outdoor air. An openable / closable air supply port Hb for supplying to the living rooms 21 and 22 is provided (the air supply port Hb is provided in the factory in advance when the building unit is manufactured, and the corresponding outer wall portion 24 is provided.
a, 24b are formed by punching at predetermined locations). In addition, a ceiling ventilation hole Hc that can be opened and closed is provided in the ceiling of each living room 21 on the lower floor and each living room 22 on the upper floor to discharge air from the living room. In addition, an exhaust duct 25a for passing air exhausted from the ceiling ventilation hole Hc of each lower living room 21 is disposed in a space above the ceiling panel material of each lower living room 21. An exhaust duct 25b, which is connected to the exhaust duct 25a at the lower part and guides air to the vicinity of the lower part of the attic, is provided in the gap between the building units outside the wall on the central side of the building of each living room 22 on the floor, Further, above the ceiling panel material of each living room 22 on the upper floor, that is, on the lower part of the attic, the exhaust duct 25b is connected to the air exhausted from the ceiling vents Hc of each living room 22 on the upper floor. An exhaust duct 25c for guiding the air exhausted from the ceiling vent Hc of each living room 21 on the lower floor, which is guided by the exhaust duct 25b, to the vent Ha is provided. FIG.
As shown in FIG. 1, in the ventilation hole Ha, one centralized ventilation fan 3 for forcibly and intensively discharging indoor air to the outside is installed. The centralized ventilation fan 3 is remotely operated by an operation switch (not shown) installed in a predetermined living room 21 on the lower floor. This centralized ventilation fan 3 is used in advance in the factory on the eaves side roof unit 23a.
It is assembled at the time of production. In this way, the central ventilation system of this example is constructed to ventilate the unit building 2 as a whole.

To cool the solar cell modules 1, 1, ... Using the cooling structure for solar cell modules of this example,
First, an operation switch (not shown) is pressed to start the centralized ventilation fan 3 installed on the eaves side roof unit 23a. Then, the air in the exhaust duct 25c is forcibly blown up from the roof surface through the ventilation hole Ha. The blown air is first blown to the back surface of the solar cell module 1 closest to the eaves in the second row from the west of the solar cell modules 1, 1, ... Module 1 is cooled by heat exchange. Further, this air passes through the notch M of the second partition member 4b from the west, and rises toward the ridge on the cooling ventilation layer B formed between the back surface of the solar cell modules 1, 1, ... And the roof surface. Then, the solar cell modules 1, 1, ... Are successively cooled by heat exchange, and the solar cell modules 1 are discharged from the opening below the ridge-side end of the solar cell module 1 closest to the ridge. In addition, the air blown up through the ventilation holes Ha is also blown to the back surfaces of the solar cell modules 1, 1, 1 on the most eaves side of the three rows other than the second row from the west through the notches 43. These solar cell modules 1, 1, 1 are cooled by heat exchange, and similarly, the ventilation layer B for cooling is raised toward the ridge to open below the ridge-side end of the solar cell modules 1, 1, 1 closest to the ridge. Discharged from the department.

On the other hand, as a result of this, the inside of the exhaust duct 25c becomes a negative pressure, so that the inside of the exhaust duct 25c is passed through the ceiling vents Hc of the living rooms 22 on the upper floor to the living rooms 2 on the upper floor.
Air in 2 passes through the exhaust ducts 25a and 25b and the ceiling vents Hc of the living rooms 21 on the lower floors to the living rooms 2 on the lower floor.
The air in 1 flows in. And each living room 21 on the lower floor
And since the inside of each living room 22 on the upper floor becomes a negative pressure, fresh air outside from the individual air supply ports Ha, Ha, ... Enters each living room 21 on the lower floor and each living room 22 on the upper floor. Pour in.

Thus, during operation of the central ventilation fan 3,
Outdoor → Each living room 21 on the lower floor → Ceiling vent Hc of each living room 21 on the lower floor → Exhaust duct 25a → Exhaust duct 25b → Exhaust duct 25c → Vent Ha, and outdoor → Each living room 22 on the upper floor → A ventilation path is formed in which the flow of the ceiling ventilation opening Hc of the living room 22 on the upper floor → the exhaust duct 25c → the ventilation opening Ha in the forward direction is formed to ventilate all the rooms of the building. The fresh outside air continuously taken in is used for ventilation in the building and then used for cooling by heat exchange of the solar cell modules 1, 1, .... In addition, an air conditioner (heat control) is not shown in each living room in FIG. 1, but an individual air conditioner or a multi-room multi-type air conditioner is installed in a predetermined living room to perform air conditioning operation. Be seen. In addition, the ventilation path does not change even during the air conditioning operation of the air conditioner.

According to the above configuration, the cooling ventilation layer B for cooling the solar cell modules 1 is provided between the solar cell modules 1 mounted on the roof surface of the unit building 2 and the roof surface, and concentrated. Since the cooling ventilation layer B is forcibly ventilated by the ventilation fan 3 to promote the heat dissipation of each solar cell module 1 by heat exchange, each solar cell module 1
Can be cooled reliably and evenly. Therefore, the power generation efficiency of each of the solar cell modules 1 can be maintained without lowering, and the durability of each of the solar cell modules 1 can be enhanced. Further, since the cooling ventilation layer B communicates with the exhaust path (ventilation port Ha, exhaust duct 25c, etc.) of the central ventilation system of the unit building 2, the operation of the central ventilation fan 3 causes the unit building 2 to operate.
After the inside is ventilated, relatively cold air is blown to the solar cell modules 1 to perform heat exchange, so that the solar cell modules 1 can be efficiently cooled. In addition, the polluted air used for ventilation can be effectively used for cooling the solar cell modules 1 without discarding it, and it is not necessary to input special power. Furthermore, by operating the air conditioner on a hot summer day, the cool air in the living room cooled by this air conditioner can be blown to each solar cell module 1 through the exhaust path of the central ventilation system, so that each solar cell can be more efficiently operated. The battery module 1 can be cooled.

Second Embodiment FIG. 5 is a sectional view showing a schematic structure of a two-story detached unit building in which a cooling structure for a solar cell module according to a second embodiment of the present invention is embodied. Sectional drawing which shows the path | route for ventilation and cooling It is sectional drawing which shows the general structure of a cooling structure. The cooling structure of the solar cell module of the second embodiment is largely different from that of the first embodiment described above in the first embodiment.
While the central ventilation system is adopted in the unit building 2 in which the cooling structure of the solar cell module of the embodiment is embodied, the unit building 5 in which the cooling structure of the solar cell module of the second embodiment is embodied. In the above, the central ventilation system is not adopted, and instead, in order to prevent dew condensation in the wall, the air passage in the wall is communicated with the outside through the ventilation hole. The point is that the structure is incorporated. Except for this point, the configuration of the first embodiment (FIG. 1) is substantially the same as that of the first embodiment. Therefore, the components corresponding to those of the first embodiment are designated by the same reference numerals and the description thereof is omitted. .

In the in-wall ventilation structure incorporated in the unit building 5 of this example, for example, the air in the wall containing moisture, which is warmed by warm air in the room in winter, is cooled by the outside air through the outer wall material, It prevents dew condensation from damaging the wall material and prevents the wall material from deteriorating due to mold on the wall in hot and humid environments during the rainy season. The gap between the inner wall panel material and the outer wall panel material of the outer wall portion of each living room on the lower floor, and the gap between the inner wall panel and the outer wall panel of the outer wall portion of each living room on the upper floor is determined by a predetermined distance from the inner wall panel material. A heat insulating material such as glass wool is stored only for the thickness, and the remaining space is used as air passages C, C, ... In the wall for guiding air for ventilation. In addition, as shown in FIG. 5, a supply port Hd for intake of outside air is provided at a lower portion of the outer wall panel material (outer side wall of the air passage C in the wall) of the outer wall of each living room on the lower floor. It is set up.

Between the inner wall air passage C of the outer wall of each living room on the lower floor and the inner wall air passage C of the outer wall of each living room on the upper floor, and the outer wall portion of each living room on the upper floor. A ventilation hole is formed between the air passage C in the wall of the room and the back of the hut. Further, exhaust ducts 51a for guiding the air passing through the inside of the walls are respectively provided at the ends of the ventilation holes between the inside air passage C of the outer wall of each living room on the upper floor and the back of the hut. The exhaust duct 51a is connected and connected to the vent hole Ha. In this example, the exhaust ducts 25a, 25b, 25c, the air supply ports Hb, the ceiling ventilation ports Hc, and the air conditioner are not installed.

To cool the solar cell modules 1, 1, ... Using the solar cell module cooling structure of this example,
First, an operation switch (not shown) is pressed to start the centralized ventilation fan 3 installed on the eaves side roof unit 23a. Then, the air in the exhaust duct 51a is forcibly blown up from the roof surface through the ventilation hole Ha. This blown-up air follows the same process as in the first embodiment to cool all the solar cell modules 1, 1, ... By heat exchange. On the other hand, as a result, the exhaust duct 51
Since the inside of a has a negative pressure, the air in the air passages C in the upper floors flows in. Then, the air flows into the air passages C in the walls of the upper floor from the air passages in the walls of the lower floor, and the air passages C in the wall of the lower floor become negative pressure, so that the individual air supply ports Hd, Fresh air from the outside flows into the air passages C in each wall on the lower floor from Hd .... Thus, while the centralized ventilation fan 3 is in operation, the flow of the air from the outside → the air passages C in the walls on the lower floors → the air passages C in the walls on the upper floor → exhaust ducts 51a → the vents Ha are in the forward direction. A ventilation path is formed to
Ventilation of the air passage C in each wall is performed. The fresh air continuously taken in is used for ventilation in the air passages C in each wall, and then used for cooling the solar cell modules 1, 1, ....

According to the above construction, the cooling ventilation layer B communicates with the air passages C in each wall through the exhaust duct 51a of the unit building 5 to form the air passages, and the air passages C in each wall are exposed to the outside air. Since it communicates with the outside through the intake air supply port Hd, after the air taken in from the outside by the operation of the centralized ventilation fan 3 ventilates the air passages C in each wall to prevent dew condensation, The air is blown onto the solar cell modules 1 to perform heat exchange, so that the solar cell modules 1 can be efficiently cooled. In addition, the polluted air used for ventilation can be effectively used for cooling the solar cell modules 1 without discarding it, and it is not necessary to input special power.

Third Embodiment FIG. 6 is a sectional view showing a schematic structure of a two-story detached unit building in which a cooling structure for a solar cell module according to a third embodiment of the present invention is embodied. Sectional drawing which shows the path | route for ventilation and cooling It is sectional drawing which shows the general structure of a cooling structure. The cooling structure of the solar cell module of the third embodiment is largely different from that of the second embodiment described above in the second embodiment.
In the in-wall ventilation structure incorporated in the unit building 5 in which the cooling structure of the solar cell module of the embodiment is embodied, outside air is directly taken into the air passage C in the wall from the outside, whereas the third embodiment In the in-wall ventilation structure incorporated in the unit building 6 in which the cooling structure for the solar cell module is embodied, the underfloor space D that is a space under the floor
This is the point where outside air is taken into the wall wind passage C via the. Except for this point, the components of the second embodiment (FIG. 5) are substantially the same as those of the second embodiment. Therefore, the components corresponding to those of the second embodiment are designated by the same reference numerals and the description thereof will be omitted. .

The in-wall ventilation structure incorporated in the unit building 6 of this example is similar to the in-wall ventilation structure incorporated in the unit building 5 of the second embodiment. Prevents the material from being damaged. As shown in FIG. 6, the air intake port Hd for intake of outside air provided at a lower portion of the outer wall panel material (outer side wall of the air passage C in the wall) of the outer wall of each living room on the lower floor is exhausted. Instead, an air supply port He for introducing outside air into the underfloor space D is provided in the cloth foundation portion on the north side, and further, the air passage C in the wall of the outer wall portion of each living room on the lower floor on the south side and the underfloor space. A ventilation hole is formed between D and V.

To cool the solar cell modules 1, 1, ... Using the solar cell module cooling structure of this example,
First, an operation switch (not shown) is pressed to start the centralized ventilation fan 3 installed on the eaves side roof unit 23a. Then, the air in the exhaust duct 51a is forcibly blown up from the roof surface through the ventilation hole Ha. The blown-up air follows the same process as in the second embodiment to cool all the solar cell modules 1, 1, ... By heat exchange. On the other hand, as a result, the exhaust duct 51
Since the inside of a has a negative pressure, the air in the air passages C in the upper floors flows in. Then, air flows into the air passages C in the walls on the upper floor from the air passages in the walls on the lower floor, and the air passages in the walls on the lower floor become a negative pressure, so that the underfloor space is created through the ventilation holes. Air enters from D. Then, in the underfloor space D, individual air supply ports He, H
Fresh outdoor air flows in from e, ....

Thus, during operation of the central ventilation fan 3,
Outdoor → Underfloor space D → Air passage C in each wall on the lower floor → Air passage C in each wall on the upper floor → Exhaust duct 51a → Ventilation path having a forward direction of the flow of ventilation hole Ha is formed Ventilation of the air passage C in each wall is performed. The fresh air continuously taken in is used for ventilation in the air passages C in each wall, and then used for cooling the solar cell modules 1, 1, ....

According to the above structure, the air passages C in each wall are communicated with the underfloor space D of the building through the ventilation holes, and the outside air is blown below the cloth foundation portion of each living room on the lower floor. Since the air supply port He for taking in the space D is provided, the air in the relatively underfloor space D can be used for cooling the solar cell modules 1 particularly in summer, so that it is more efficient. Can be cooled down.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like that do not depart from the gist of the present invention. Is also included in the present invention. For example, in the above embodiment, the central ventilation fan is attached to the eaves side of the field board, but not limited to this location, it may be on the ridge side of the field board,
For example, it may be an arbitrary place on the ceiling. Further, the centralized ventilation fan is not limited to one, but a plurality of centralized ventilation fans may be installed.

Further, the mounting member does not have to have a structure in which a vinyl chloride steel plate is attached to the upper surface of wood, and may be, for example, aluminum alone or engineering plastic. Further, the roof finishing material is not limited to slate, but roof tiles, folded plates and the like may be used. Further, the fixture for fixing the solar cell module and the mounting member to the roof surface is not limited to the screw and may be a nail or the like. Furthermore, the solar cell incorporated in the solar cell module is not limited to a single crystal silicon solar cell, but a polycrystalline silicon solar cell,
Amorphous silicon solar cells may be used.

[0041]

As described above, according to the configuration of the present invention, the ventilation layer for cooling the solar cell module is provided between the solar cell module mounted on the roof surface of the building and the roof surface for ventilation. Since the fan device forcibly ventilates the ventilation layer for cooling the solar cell module and promotes heat dissipation of the solar cell module by heat exchange, it is possible to cool the solar cell module reliably and evenly. You can Therefore, it is possible to maintain the power generation efficiency of the solar cell module without lowering it and improve the durability of the solar cell module.

More specifically, according to the structure of claim 1, since the ventilation layer for cooling the solar cell module communicates with the exhaust path of the ventilation system of the building, the ventilation fan device has After the inside of the building is ventilated by operation, relatively cool air is blown onto the solar cell module to perform heat exchange, so that the solar cell module can be efficiently cooled. Also,
The polluted air used for ventilation can be effectively used for cooling the solar cell module without throwing it away, and it is not necessary to input special power.

According to the second aspect of the present invention, since the fan device for the central ventilation system is used as the ventilation fan device, the relatively cool air discharged from each room of the building is the fan device. After being collected on a relatively large scale by the above, heat is exchanged by being sprayed onto the solar cell module, so that the solar cell module can be cooled more efficiently and the air in the contaminated building can be cooled. Can be used more effectively.

According to the third aspect of the present invention, the ventilation layer for cooling the solar cell module communicates with the ventilation space in the wall of the building to form a ventilation path, and therefore the ventilation fan. After the ventilation space in the wall is ventilated by operation of the device to prevent dew condensation, relatively cool air is blown to the solar cell module to perform heat exchange, so that the solar cell module is efficiently Can be cooled. Similarly, the polluted air used for ventilation can be effectively used.

Further, according to the structure of claim 4, since the ventilation space in the wall is communicated with the outside of the building or the underfloor space through the ventilation hole, the ventilation fan device is operated. Since the air taken in from the outside or the underfloor space is used to prevent dew condensation by ventilating the ventilation space in the wall, it can be used for cooling the solar cell module, so that the cooling is efficiently performed. It can be carried out.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a schematic structure of a two-story detached unit building in which the cooling structure for a solar cell module according to the first embodiment of the present invention is embodied. It is sectional drawing shown.

FIG. 2 is a perspective view showing a partially broken view of a cooling structure of the solar cell module.

FIG. 3 is a cross-sectional view showing how the solar cell module of this example is installed on a roof surface.

FIG. 4 is a cross-sectional view showing a state in which a centralized ventilation fan applied to a central ventilation system adopted in the unit building is attached to a roof panel of the unit building.

FIG. 5 is a cross-sectional view showing a schematic structure of a two-story detached unit building in which a cooling structure for a solar cell module according to a second embodiment of the present invention is implemented, in which passages for ventilation and cooling are shown. Sectional view shown is a sectional view showing the general configuration of a cooling structure.

FIG. 6 is a cross-sectional view showing a schematic structure of a two-story detached unit building in which a solar cell module cooling structure according to a third embodiment of the present invention is embodied, and showing passages for ventilation and cooling. Sectional view shown is a sectional view showing the general configuration of a cooling structure.

[Explanation of symbols]

1 solar cell module 2, 5, 6 unit building (building) 3 centralized ventilation fan (fan device for ventilation) 25a, 25b, 25c, 51a exhaust duct (exhaust path) B ventilation layer for cooling (ventilation for cooling solar cell module) Layer) C Wind passage in the wall (ventilation space in the wall) D Underfloor space (underfloor space) Hd Air supply port (ventilation port)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Hasegawa, Sekisui Chemical Co., Ltd. 32, Wadai, Tsukuba, Ibaraki Prefecture (72) Inventor Shota Morita, 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Sharp Corporation (72) Satoshi Tanaka 22-22, Nagaike-cho, Abeno-ku, Osaka City, Osaka Prefecture

Claims (6)

[Claims] 1. In a building having a ventilation system including at least one ventilation fan device, wherein a solar cell module is mounted on a roof surface, the solar cell module is provided between the solar cell module and the roof surface. By providing a ventilation layer for cooling, connecting the ventilation layer for cooling the solar cell module and the exhaust path of the ventilation system, and providing the at least one ventilation fan device on the exhaust path, indoor air A cooling structure for a solar cell module, which is configured to forcibly exhaust air through a ventilation layer for cooling the solar cell module. 2. The cooling structure for a solar cell module according to claim 1, wherein the ventilation fan device is a fan device for a central ventilation system for ventilating the building as a whole. 3. In a building in which a ventilation space is provided in an arbitrary wall and a solar cell module is attached to a roof surface, the solar cell module cooling is provided between the solar cell module and the roof surface. A ventilation layer is provided, the ventilation layer for cooling the solar cell module communicates with the ventilation space in the wall to form a ventilation path, and at least one ventilation fan device is provided at a predetermined position on the ventilation path. The cooling structure for the solar cell module is characterized in that the air in the ventilation space in the wall is forcibly exhausted to the outside through the ventilation layer for cooling the solar cell module. 4. The cooling structure for a solar cell module according to claim 3, wherein the ventilation space in the wall is communicated with an outdoor space or an underfloor space of the building through a ventilation hole. 5. The ventilation fan device is provided at a connecting portion between a ventilation layer for cooling the solar cell module and a ventilation space in the wall. Solar cell module cooling structure. 6. The ventilation layer for cooling the solar cell module is configured such that air is sent from the eaves side of the building by the ventilation fan device and the sent air is discharged from the ridge side. Claim 1, characterized in that
The cooling structure for a solar cell module according to 2, 3, 4 or 5.