JP7165372B1 - Photovoltaic module support unit - Google Patents

Abstract

A means for inexpensively mounting a solar cell module on the roof of a freezer or refrigerated warehouse is provided. A roof substrate having a deck plate 1 and H steel 2 supporting the deck plate 1 from below, and a heat insulating layer 4 for mounting a solar cell module on the roof of a freezer/refrigerated warehouse. Steel pipe 3 which is a support unit and penetrates heat insulating layer 4, mounting plate 8 attached to the upper end of steel pipe 3 for mounting a solar cell module, lower end of steel pipe 3, and one flange 2a of H steel 2 It has a heat insulating block 9 made of fiber reinforced resin foam disposed between. [Selection drawing] Fig. 1

Description

The present invention relates to a support unit for mounting solar modules on the roof of a cold storage warehouse.

Conventionally, when mounting a solar cell module on a roof, it was common to mount it via a support bracket. For example, Patent Literature 1 discloses a configuration in which a solar cell module is attached to a slate roof with an attachment portion mainly made of a metal material. In the form of Patent Document 1, heat is conducted from the roof, which is heated to a high temperature, to the solar cell module in an area where the solar cell module is not arranged, and the temperature of the solar cell module becomes high, thereby suppressing a decrease in efficiency. , placing insulation between the solar module and the slate roof.

JP 2012-182323 A

In the form disclosed in Patent Document 1, a heat insulating material is arranged on the back surface of the solar cell module in order to suppress heat conduction from the roof to the solar cell module. In the case of a refrigerated warehouse, the temperature of the roof itself on which the support metal fittings are attached is low, and this temperature is transmitted to the solar cell modules via the support metal fittings.

Therefore, when mounting a solar module on the roof of a freezer or refrigerated warehouse, a heat insulating layer is placed around the support metal fittings to prevent dew condensation on the support metal fittings. By adopting a long shape, the temperature difference between the roof and the solar cell module is absorbed by the supporting metal fittings, and measures have been taken to prevent the solar cell module from becoming low temperature.

However, in order to mount a large number of solar cell modules on the roof of the warehouse, a large number of support fittings are also required. As a result, the cost of the support bracket and the heat insulating layer around it increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide means for inexpensively mounting a solar cell module on the roof of a cold storage warehouse or a cold storage warehouse.

The present invention provides a support unit for mounting a solar cell module on the roof of a freezer/refrigerated warehouse having a roof substrate and a heat insulating layer laminated on the roof substrate. It has any of the third features.

A first aspect of the present invention is a heat insulating block made of a vertically elongated metal support material penetrating the heat insulating layer, and a fiber-reinforced resin foam disposed between the lower end of the support material and the roof substrate. and a metal mounting plate attached to the upper end of the support member.

The second aspect of the present invention is composed of a vertically elongated metal support member that penetrates the heat insulating layer and whose lower end is attached to the roof base, and a fiber-reinforced resin foam disposed on the upper end of the support member. and a metal mounting plate arranged on the heat insulating block.

A third aspect of the present invention is a vertically elongated metal support member which penetrates the heat insulating layer and whose lower end is attached to the roof substrate, the support member being vertically divided into two or more; A heat insulating block made of a fiber-reinforced resin foam disposed between upper and lower support members at a division point of the support member, and a metal mounting plate disposed at the upper end of the support member. and

And this invention includes the following structures as a preferable aspect.
The roof substrate comprises at least a deck plate, with insulation disposed around the lower ends of the supports in the space between the lower surface of the insulation layer and the upper surface of the roof substrate.
The support material is a steel pipe, and the inside is filled with a heat insulating material.
The fiber reinforced resin foam is glass fiber reinforced rigid polyurethane foam. Furthermore, the glass fiber reinforced rigid polyurethane foam is a synthetic sleeper specified in JIS E 1203.
A heat insulating layer is laminated on the side surface of the support member. Further, a waterproof layer is laminated on the heat insulating layer laminated on the roof substrate, and the waterproof layer is continuously laminated on the surface of the heat insulating layer laminated on the side surface of the support member.

In the present invention, a heat insulating block made of a specific material is placed at least one of the upper end, the lower end, and the middle of the supporting material that connects the solar cell module and the roof substrate, so that the solar cell module and the roof substrate are connected. Since the heat conduction between the solar cell modules is greatly suppressed, the support member can be made shorter than before, and the cost for mounting the solar cell module can be greatly reduced.

Fig. 2 is a vertical cutaway end view of one embodiment of the support unit of the present invention mounted on a roof; Fig. 2 is a vertical cutaway end view of one embodiment of the support unit of the present invention mounted on a roof; Fig. 3 is a plan view showing a cut portion of the cut end view of Figs. 1 and 2; FIG. 2 is an enlarged view of the periphery of a heat insulating block in FIG. 1 and a plan view of the enlarged view from above; FIG. 4 is a vertical cut-away end view of another embodiment of the support unit of the present invention mounted on a roof; FIG. 4 is a vertical cut-away end view of another embodiment of the support unit of the present invention mounted on a roof; FIG. 4 is a vertical cutaway end view of a conventional support unit mounted on a roof;

The present invention is a support unit for mounting a solar cell module on the roof of a freezer warehouse or cold storage warehouse (hereinafter referred to as "freezer/cold storage warehouse"), and uses a heat insulating block made of fiber-reinforced resin foam. It is characterized by First, the configuration of a conventional support unit will be described.

FIG. 7 is a view schematically showing a state in which a conventional support unit for attaching a solar cell module is attached to the roof of a freezer/refrigerated warehouse, and is a vertically cut end view.

In the configuration of FIG. 7, a deck plate 1 as a roof material and an H-shaped steel 2 as a beam material for supporting the roof material are provided as a roof substrate, and the H-shaped steel 2 has one flange 2a supports the deck plate 1 from below. A heat insulating layer 4 is laminated on the deck plate 1 to maintain the temperature of the space below the deck plate 1 . The heat insulating layer 4 is formed by laminating a plurality of heat insulating materials 4a to 4d so as to have a predetermined thickness.

Reference numeral 3 in FIG. 7 denotes a steel pipe as a support material, which is arranged on the flange 2a of the H-shaped steel 2 so that the longitudinal direction is parallel to the vertical direction, penetrates the heat insulating layer 4, and the lower end is the upper surface of the flange 2a. It is attached by welding, etc. A heat insulating material 7 is filled in the steel pipe 3, and a heat insulating layer 5 is formed by laminating heat insulating materials 5a to 5c on the outer periphery of the steel pipe 3 as well. Furthermore, a waterproof layer 6 is continuously laminated on the surface of the heat insulating layer 4 on the deck plate 1 and the heat insulating layer 5 on the outer periphery of the steel pipe 3, and a mounting plate 8 for attaching the solar cell module is provided on the upper end of the steel pipe 3. Attached by welding, etc. A solar cell module is directly attached to the mounting plate, or indirectly via a member such as a base material, if necessary. The mounting plate 8 is made of the same material as the H-shaped steel 2 and the steel pipe 3 . In FIG. 7, a steel pipe 3, a heat insulating material 7, and a mounting plate 8 constitute a support unit.

In the configuration of FIG. 7, the deck plate 1, the H-shaped steel 2, the steel pipe 3, and the mounting plate 8 are made of metal. Therefore, by arranging the support unit for mounting the solar cell module, a heat transfer path is formed between the solar cell module mounted on the mounting plate 8 and the space in the warehouse under the deck plate 1. There was a risk that the temperature in the space inside the warehouse would be transmitted to the solar cell module. Therefore, conventionally, by setting the distance from the surface of the waterproof layer 6 on the deck plate 1 to the surface of the mounting plate 8 as long as about 1.5 m, temperature is transmitted to the solar cell module, suppressing dew condensation.

The present invention is characterized in that a heat insulating block is arranged between the H-shaped steel 2 and the mounting plate 8, and the configuration other than this feature is basically the same as the conventional configuration shown in FIG. In the present invention, the heat insulating block may be placed at any of the bottom end, top end, and midway of the steel pipe 3 . Each will be described in detail below.

FIG. 1 is a vertical cross-sectional end view schematically showing a state in which one embodiment of the support unit of the present invention is attached to the roof of a cold storage warehouse, and FIG. is a cut end view of the. Moreover, FIG. 3 is a schematic diagram for showing the cutting position of FIGS. 1 and 2, and is a plan view of the state of FIGS. 1 and 2 as viewed from above. 1 is a cut end view at the A-A' portion in FIG. 3, and FIG. 2 is a cut end view at the B-B' portion. FIG. 1 is a cut end view of a steel pipe 3 having a square horizontal cross section including the center of the square, and FIG. 2 is a cut end view at a position off the center of the square. In FIG. 3, only some of the members shown in FIGS. 1 and 2 are shown. 1 to 3, the same members as those shown in FIG. 7 are denoted by the same reference numerals, and descriptions thereof are omitted.

In this embodiment, a heat insulating block 9 is arranged between the lower end of the steel pipe 3 as a supporting material and the flange 2a of the H-shaped steel 2 as a beam material. Heat is less likely to be conducted between the shaped steel 2 and the steel pipe 3, and even if the length of the steel pipe 3 is shortened to about half that of the conventional one, the temperature of the solar cell module is suppressed to the same extent as the conventional one. be able to. FIG. 4(a) is a partial enlarged view of the heat insulating block 9 and its surroundings in FIG. 1, showing only the main members. 4(b) is a top view of the portion shown in FIG. 4(a), and FIG. 4(a) is a cut end view of the CC′ portion in FIG. 4(b). . As shown in FIG. 4, a flange 3a attached to the lower end of the steel pipe 3 by welding or the like and a flange 2a of the H-shaped steel 2 sandwich the heat insulation block 9 and fix it with bolts 11, whereby the heat insulation block 9 and A steel pipe 3 is attached to the H-section steel 2 . Since the bolt 11 is made of metal, it becomes a heat transfer path between the steel pipe 3 and the H-section steel 2. significantly lower.

The upper end of the steel pipe 3 is closed by a mounting plate 8, and the steel pipe 3 and the mounting plate 8 are connected by welding. Alternatively, the flange and the mounting plate 8 may be fixed with bolts or the like.

5 and 6 are vertically cut end views schematically showing a state in which another embodiment of the support unit of the present invention is attached to the roof of a refrigerated warehouse. FIG. 4 shows similar elements to FIG. 3;

FIG. 5 shows an example in which the heat insulating block 9 is arranged between the upper end of the steel pipe 3 and the mounting plate 8. As shown in FIG. In this embodiment, the flange 3b is attached to the upper end of the steel pipe 3 by welding or the like, the heat insulating block 9 is sandwiched between the flange 3b and the mounting plate 8, and the flange 2b, the heat insulating block 9 and the mounting plate 8 are held together by bolts or the like. should be fixed. The lower end of the steel pipe 3 may be fixed to the flange 2a of the H-shaped steel 2 by welding or the like. The flange 2a of the H-shaped steel 2 may be fixed with bolts or the like.

FIG. 6 shows an example in which a heat insulating block 9 is interposed in the middle of the steel pipe 3. As shown in FIG. In this embodiment, the steel pipe 3 is divided into upper and lower parts, and the heat insulating block 9 is arranged between the upper and lower steel pipes 22 and 21 at the part of the division. A flange 22a is attached to the lower end of the upper steel pipe 22, and a flange 21a is attached to the upper end of the lower steel pipe 21 by welding or the like. The connection between the upper end of the steel pipe 22 and the mounting plate 8 and the connection between the lower end of the steel pipe 21 and the flange 2a of the H-shaped steel 2 may be welded. A flange may be attached to the upper end of the steel pipe 22 and the lower end of the steel pipe 21, and the mounting plate 8 and the flange 2a may be fixed with bolts or the like. Note that the number of division points may be two or more.

In the present invention, as shown in FIGS. 1, 5, and 6, the heat insulating block 9 may be placed at one of the bottom end, top end, or midway of the support material. In this case, if the heat insulation block 9 cannot secure a sufficient thickness, it may be arranged at a plurality of locations to secure the necessary thickness as a whole.

The heat insulating block 9 used in the present invention is made of fiber-reinforced resin foam. A fiber-reinforced resin foam is a material whose strength is increased by mixing fiber as a filler into a resin foam as a matrix. The resin material of the resin foam includes thermosetting resins such as unsaturated polyester, polyvinyl ester, epoxy resin, polyphenol, and polyurethane, and the fibers include carbon fiber, polyester fiber, nylon fiber, aramid fiber, and glass fiber. , and boron fibers. Among them, glass fiber reinforced rigid polyurethane foam is preferably used. Glass fiber reinforced rigid polyurethane foam has a large number of long glass fibers arranged in parallel in the rigid polyurethane foam, and has the characteristics of both natural wood and plastic. .

As a glass fiber reinforced rigid polyurethane foam, more specifically, it is a synthetic sleeper specified in JIS E 1203. When such a synthetic sleeper is used, the preferable thickness of the heat insulating block 9 is about 50 to 100 mm. When the heat insulating blocks 9 are arranged at a plurality of locations, the total thickness of all the heat insulating blocks should be within the above range.
The strength of the glass fiber reinforced rigid polyurethane foam varies depending on the direction of the long glass fibers, but the insulating blocks 9 may be arranged so that the long glass fibers are parallel to the horizontal direction, as in the case of being used as a sleeper. .

In the above-described embodiment, the steel pipes 3, 21, 22 are used as the support members of the support unit, and it is preferable that the heat insulating material 7 be filled inside. Polyurethane foam that can be injected is preferably used as the heat insulating material 7 . Moreover, when using a steel pipe, the horizontal cross section is not limited to the square shown in the above embodiment, and may be polygonal, circular, or elliptical other than rectangular or quadrangular. In addition to steel pipes, long members such as H-shaped steels, angle steels (angles), channel steels, and flat steels can be used as supporting materials, and a plurality of these members may be used in combination. .

In the present invention, as exemplified in the above embodiment, by laminating the heat insulating layer 5 on the side surface of the supporting material, dew condensation on the supporting material and transmission of external heat into the warehouse via the supporting material can be prevented. It can be suppressed and is preferable. In the case of H-section steel or channel steel, a space formed by a pair of flanges and a web connecting the flanges may be filled with a heat insulating material by spraying, and then a heat insulating layer may be laminated. The heat insulating layer 5 may be formed by laminating a plurality of heat insulating materials 5a to 5c as illustrated in FIGS. 1, 2, 5 and 6 in order to obtain a predetermined thickness. Moreover, you may laminate|stack several heat insulating materials from which a kind differs. For example, the heat insulating materials 4a to 4c, 5a and 5b may be made of polystyrene foam, and the heat insulating materials 4d and 5c may be made of polyurethane foam. 1, 2, 5 and 6, each of the heat insulating layers 4 and 5 is formed by laminating a plurality of heat insulating materials. A single layer may be used as long as the properties are obtained, and the number of layers when laminating a plurality of layers is not limited.

Further, in the present invention, it is preferable to provide a waterproof layer 6 continuously on the surfaces of the heat insulating layers 4 and 5. Specifically, an asphalt waterproof material is preferably used. In this case, it is preferable that the heat insulating materials 4d and 5c in contact with the waterproof layer 6 are made of a material having heat resistance, or have a film made of a material having heat resistance provided on the surface thereof.

In the embodiment of FIGS. 1 to 6, the deck plate 1 and the H-section steel 2 are used as the roof substrate, and the steel pipe 3 or the insulation block 9 is in contact with the upper surface of the flange 2a of the H-section steel 2, so that the region The ends of the deck plate 1 are separated from each other and attached. Therefore, as shown in FIGS. 1, 5, and 6, a space is created between the upper surface of the deck plate 1 and the lower surface of the heat insulating layer 4 around the lower end of the steel pipe 3. A heat insulating material 10 may be arranged around the steel pipe 3 and the heat insulating block 9 . Polyurethane foam that can be sprayed is preferably used as the heat insulating material 10 .

In the embodiment of FIGS. 1 to 6, the roof base has the deck plate 1 as the roof material and the H-shaped steel 2 as the beam material, but the structure of the roof base is not limited to these in the present invention. The roofing material may be flat panels, in which case the support material and the insulating blocks 9 may be attached to the roofing material. In addition, although a form that does not use beams may be used, it is preferable to arrange the support material on the beams in order to support the weight of the solar cell module. Moreover, the roofing material is not limited to a metal member such as a deck plate, and the effect of the present invention can be obtained even if it is a non-metallic member such as a concrete slab.

1: deck plate, 2: H-shaped steel, 2a, 2b: flange, 3: steel pipe, 3a, 3b: flange, 4, 5: heat insulating layer, 4a to 4d, 5a to 5c: heat insulating material, 6: waterproof layer, 7: heat insulating material, 8: mounting plate, 9: heat insulating block, 10: heat insulating material, 11: bolt, 21, 22: steel pipe, 21a, 22a: flange

Claims (9)

A support unit for mounting a solar cell module on the roof of a freezer/refrigerated warehouse, comprising a roof substrate and a heat insulating layer laminated on the roof substrate,
A vertically elongated metal support that penetrates the heat insulating layer;
a heat insulation block made of a fiber-reinforced resin foam disposed between the lower end of the support member and the roof base;
A support unit for a solar cell module, comprising: a metal mounting plate attached to the upper end of the support member. A support unit for mounting a solar cell module on the roof of a freezer/refrigerated warehouse, comprising a roof substrate and a heat insulating layer laminated on the roof substrate,
a vertically elongated metal support member that penetrates the heat insulating layer and has a lower end attached to the roof substrate;
a heat insulating block made of a fiber-reinforced resin foam disposed on the upper end of the support;
A support unit for a solar cell module, comprising: a metal mounting plate arranged on the heat insulating block. A support unit for mounting a solar cell module on the roof of a freezer/refrigerated warehouse, comprising a roof substrate and a heat insulating layer laminated on the roof substrate,
a vertically elongated metal support member which penetrates the heat insulating layer and whose lower end is attached to the roof substrate, the support member being vertically divided into two or more;
a heat insulating block made of a fiber-reinforced resin foam disposed between upper and lower support members at the division point of the support member;
A support unit for a solar cell module, comprising: a metal mounting plate disposed on an upper end of the support member. The roof substrate comprises at least a deck plate, and a heat insulating material is arranged around the lower end of the support member in the space between the lower surface of the insulating layer and the upper surface of the roof substrate. Item 4. The solar cell module support unit according to any one of Items 1 to 3. 4. The support unit for a solar cell module according to claim 1, wherein the support member is a steel pipe, the interior of which is filled with a heat insulating material. 4. The support unit for a solar cell module according to claim 1, wherein said fiber-reinforced resin foam is glass fiber-reinforced rigid polyurethane foam. 7. The support unit for a solar cell module according to claim 6, wherein said glass fiber reinforced rigid polyurethane foam is a synthetic sleeper specified in JIS E 1203. 4. The support unit for a solar cell module according to claim 1, wherein a heat insulating layer is laminated on a side surface of said support member. A waterproof layer is laminated on the heat insulation layer laminated on the roof substrate, and the waterproof layer is laminated continuously on the surface of the heat insulation layer laminated on the side surface of the support member. The support unit for a solar cell module according to claim 7.

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