JP2012132213A - Roof waterproof structure and laying method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof waterproof structure capable of effectively preventing fire spread due to leaping flames, without impairing long-life reliability or productivity.SOLUTION: A noncombustible insulation layer 120 is disposed between a heat insulator 110 and a waterproof layer 130, so that combustion due to leaping flames penetrating through a solar cell layer 140 and the waterproof layer 130 is quenched by the noncombustible insulation layer 120 and prevented from reaching the heat insulator 110. Consequently, fire spread due to leaping flames is effectively prevented without impairing long-life reliability or productivity.

Description

  The present invention relates to a waterproof sheet-integrated roof waterproof structure and a laying method thereof, and more particularly to a roof waterproof structure having solar cells and a laying method thereof.

  Assuming that the waterproof sheet-integrated roof waterproof structure is laid on the roof surface, a heat insulating material is laid on the roof frame, and the waterproof sheet-integrated roof waterproof structure is laid on the roof. One formed by joining together is known (Patent Document 1).

  In such a roof structure, flame retardancy, especially measures to prevent the spread of fire due to flying fire are required. On the other hand, EVA (Ethylene Vinyl Acetate copolymer) with a flame retardant added to the resin sealing material that seals solar cells for the purpose of improving the flame resistance and preventing the spread of fire due to flying fire as a waterproof waterproof structure Or what uses grafted PE (Polyethylene) is known (patent document 2).

JP 2007-067131 A JP 2004-207464 A

  However, if the roof waterproof structure subjected to such flame retardant is integrated with the waterproof sheet and arranged on the heat insulating material on the roof, the heat insulating material spreads and the fire spreads. It could not be surely prevented.

  In addition, it is necessary to select an additive that does not affect the roof waterproof structure as a flame retardant, and is preferable in terms of long-term reliability of solar cells and productivity. There wasn't.

  The present invention has been made in view of the problems as described above, and provides a roof waterproof structure that can effectively prevent the spread of fire due to flying fire without impairing long-term reliability and productivity. Is.

  The roof waterproof structure of the present invention is a roof waterproof structure laid on the upper surface of a housing such as a roof or a roof, a plurality of heat insulating materials laid on the upper surface of the housing via a predetermined gap, and a plurality of heat insulating materials Built-in non-combustible insulating layer containing non-combustible fibers laid on the top surface of the heat insulating material, waterproof layer laid on the top surface of the non-flammable insulating layer, and a plurality of electronic component cells wired inside the gap of the heat insulating material And an electronic component layer laid on the upper surface of the waterproof layer.

  Therefore, in the roof waterproof structure of the present invention, since the non-combustible insulating layer is located between the heat insulating material and the waterproof layer, even if the combustion due to flying fire penetrates the electronic component layer and the waterproof layer, the non-combustible insulating layer is stopped. And never reach the insulation.

  The structure laying method of the present invention is a structure laying method of laying the roof waterproof structure of the present invention on the upper surface of a housing such as a roof or a roof, and a plurality of heat insulating materials via a predetermined gap on the upper surface of the housing. A plurality of electronic components that are laid on the top surface of a plurality of heat insulating materials, a waterproof layer is laid on the top surface of the non-combustible insulating layer, and are wired inside the gap between the heat insulating materials. An electronic component layer containing the cell is laid on the top surface of the waterproof layer.

  In the roof waterproof structure of the present invention, even if combustion due to sparks penetrates the electronic component layer and the waterproof layer, it is stopped by the non-combustible insulating layer and does not reach the heat insulating material. For this reason, it is possible to effectively prevent the spread of fire due to sparks without impairing long-term reliability and productivity.

It is a perspective view which shows the assembly structure of the roof waterproofing structure of embodiment of this invention. It is a vertical side view which shows the AA 'cross section of FIG. It is a vertical front view which shows the BB 'cross section of FIG. It is a vertical front view which shows the CC 'cross section of FIG. It is a vertical side view which shows the DD 'cross section of FIG. It is a top view which shows the sheet | seat body which forms the solar cell layer which is an electronic component layer. It is a vertical side view which shows the internal structure of a photovoltaic cell.

  An embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, description will be made by defining the front-rear, left-right, up-down directions as shown. However, this is provided for the sake of convenience in order to briefly explain the relative relationship between the components. Therefore, the direction at the time of manufacture and use of the product which implements the present invention is not limited.

  As shown in FIGS. 1 to 5, the roof waterproof structure 100 according to the present embodiment is laid on the upper surface of a housing 10 such as a roof or a rooftop. For this reason, the waterproof roof structure 100 includes a plurality of heat insulating materials 110 laid on the upper surface of the casing 10 via a predetermined gap, and glass fibers as non-combustible fibers laid on the upper surfaces of the plurality of heat insulating materials 110. A non-combustible insulating layer 120, a waterproof layer 130 laid on the top surface of the non-flammable insulating layer 120, and a solar cell that is a plurality of electronic component cells laid on the top surface of the waterproof layer 130 and wired inside the gaps of the heat insulating material 110. And a solar battery layer 140 that is an electronic component layer in which the battery cell 141 is built.

  More specifically, in the present embodiment, the housing 10 is composed of a ground deck plate whose surface is an uneven metal roof in the front-rear direction, which is a flat deck plate, a brick rod, RC (reinforced concrete), ALC ( autoclaved light weight concrete).

  The heat insulating material 110 is made of a flat polystyrene foam that is elongated in the front-rear direction and flat in the up-down direction and has a constant width in the left-right direction, and a plurality of the heat insulating materials 110 are laid on the upper surface of the housing 10 via a predetermined gap 111 in the left-right direction. The thickness is formed in 20-100 mm, and surface materials, such as aluminum foil, paper, a polyethylene-type resin film, and an ethylene vinyl acetate-type resin film, are stuck on the surface. The inner surface of the gap 111 is covered with an aluminum tape 112 as a metal layer.

  In the present embodiment, the heat insulating material 110 is a polystyrene foam, but may be a synthetic resin foamed molded body such as a polyethylene foam, a urethane foam, and a phenol foam.

  A joint tape 114 is attached to the upper surface of the heat insulating material 110 arranged in the front-rear direction. The joint tape 114 is preferably an aluminum tape based on nonflammable aluminum from the viewpoint of suppressing the spread of fire due to sparks. Further, as shown in FIGS. 3 and 4, an auxiliary steel plate 115 is disposed in a lower layer of the heat insulating material 110 and fixed to the housing 10 with screws 116.

  The incombustible insulating layer 120, the waterproof layer 130, and the solar cell layer 140 are each formed in a sheet shape, and are laid in order on the upper surface of the heat insulating material 110. As shown in FIGS. 2 and 3, the incombustible insulating layer 120 is fixed to the housing 10 with screws 150 in such a manner that the disk fixing metal 151 and the rectangular flat plate fixing metal 152 hold down the incombustible insulating layer 120. .

The incombustible insulating layer 120 is made of a resin sheet containing incombustible fibers, and the incombustible fibers are formed as a sheet-like nonwoven fabric. The non-combustible fiber is made of glass fiber, and the resin sheet is made of polyethylene resin. The glass fiber has a mass of 70 g / m ² or more contained in the resin sheet.

As described above, since the glass fiber is contained in the resin sheet in a mass of 70 g / m ² or more, it is possible to effectively prevent fires caused by sparks by the non-combustible insulating layer 120 and prevent burnout to the roof surface.

  The non-combustible fiber is preferably a glass fiber in consideration of workability, economy, etc., but is not limited to a glass fiber, and a metal fiber, a ceramic fiber, or the like can also be used. More specifically, the non-combustible insulating layer 120 has a configuration in which a non-combustible fiber woven fabric or non-woven fabric is used as a core material, and resin sheets are bonded to both sides or one side.

  Examples of the resin sheet include those obtained by molding polyethylene, polypropylene, polyester, and polyvinyl chloride resin, and polyethylene is preferable. By using polyethylene, migration of the plasticizer contained in the waterproof sheet can be reliably prevented when it comes into contact with a soft PVC (Polyvinyl Chloride) waterproof sheet. This is also preferable.

  Furthermore, in order to improve the adhesiveness between the nonflammable fibers and the resin sheet, it is preferable to interpose an LDPE (low density polyethylene) resin layer as an adhesive layer between the nonflammable fibers and the resin sheet.

  In addition, the above resin sheet may be a non-woven fabric made of polyethylene in consideration of heat insulation. By using a non-woven fabric made of polyethylene, longitudinal and lateral elongation can be suppressed, and elongation and breakage of nonflammable fibers can be prevented. Polyethylene non-woven fabric is a stretched tape-shaped polyethylene film arranged in a biaxial (vertical / horizontal) or triaxial (vertical / both diagonal) lattice pattern, and a sheet with the intersections adhered is cored. The material can be obtained by laminating polyethylene films on both sides.

  As another form of the non-combustible insulating layer 120, a non-combustible fiber can be used as a short fiber (chopped strand), which can be contained in a resin, and a resin sheet molded into a sheet by extrusion molding or calendar molding can be obtained. The preferred fiber diameter in this case is 6 μm to 24 μm.

  As shown in FIGS. 1, 3, and 4, the non-combustible insulating layer 120 as described above is not located at the upper surface opening of the gap 111 of the plurality of heat insulating materials 110, and the gap 111 of the plurality of heat insulating materials 110 is not located. The upper surface opening is sealed with an aluminum tape 113 which is a metal layer.

  The waterproof layer 130 is formed in an elongated sheet shape, for example, a cross-layered two-layer structure of a lower layer elongated in the front-rear direction and a plurality of layers arranged in the left-right direction and an upper layer elongated in the left-right direction and arranged in the front-rear direction Is formed. Here, the waterproof layer 130 is made of PVC (Polyvinyl Chloride). By setting it as PVC, the fire spread by flying fire can be effectively suppressed by the self-extinguishing property.

  As shown in FIG. 6, the solar cell layer 140 is formed in a rectangular sheet shape elongated in the front-rear direction as a whole, and rectangular solar cells 141 elongated in the front-rear direction are arranged in two rows in the left-right direction, in the front-rear direction. Arranged in four rows.

  As shown in FIG. 7, the solar cell layer 140 includes a waterproof sheet 147 made of PVC (Polyvinyl Chloride), an adhesive layer 142 having a laminated structure made of vinyl acetate resin, a back surface protective layer 143 made of a fluorine resin film, and a polyethylene film. The lower surface sealing material 144 made of, a film-like amorphous silicon solar cell 141, the upper surface sealing material 145 made of a polyethylene film, and the surface protective layer 146 made of a fluorine-based resin film are laminated.

  Thus, the upper surface sealing material 145 and the lower surface sealing material 144 that seal the upper surface and the lower surface of the solar battery cell 141 are the portions of the upper surface sealing material 145 that seal the upper surface of the solar battery cell 141. The thickness is 0.3 mm or less and the total thickness is 0.7 mm or less. More preferably, the upper surface sealing material 145 has a thickness of 0.3 mm and the lower surface sealing material 144 has a thickness of 0.4 mm. .

  As another form, the solar cell layer 140 is made of a waterproof sheet 147 made of PVC, a lower surface sealing material 144 made of a vinyl acetate resin, a film-like amorphous silicon solar cell 141, and a vinyl acetate film. The upper surface sealing material 145 and the surface protective layer 146 made of a fluorine-based resin film are laminated.

  Thus, each of the upper surface sealing material 145 and the lower surface sealing material 144 sealing the upper surface and the lower surface of the solar battery cell 141 has a thickness of 0.6 mm or less, and more preferably, the respective thicknesses. Is 0.4 mm.

  Further, as shown in FIG. 5, the solar cell layer 140 has an output terminal unit 161 wired to the solar cell 141 protruding from the lower surface, and this is wired by a connector 162 and a cable 163. Such output terminal unit 161, cable 163, and the like are inserted using the gap 111 of the heat insulating material 110.

  In the structure as described above, in the roof waterproof structure 100 of the present embodiment, the plurality of solar cells 141 of the uppermost solar cell layer 140 receive sunlight to generate power. The electric power generated in this way is output to the outside through the output terminal unit 161 and the cable 163 inserted through the gaps 111 of the plurality of heat insulating materials 110.

  Since this solar cell layer 140 is formed in a flexible sheet shape unlike a conventional general solar cell panel, its construction is easy. Moreover, since the waterproof layer 130 and the non-combustible insulating layer 120 located in the lower layer are also formed in a flexible sheet shape, the construction is further facilitated.

  In the roof waterproof structure 100 of the present embodiment, a non-combustible insulating layer 120 in which non-combustible fibers are formed as a sheet-like non-woven fabric is laid as an upper layer of the heat insulating material 110, and a gap between the plurality of heat insulating materials 110. An upper surface opening 111 is sealed with a nonflammable aluminum tape 113.

  Furthermore, the thickness of the upper surface sealing material 145 made of a polyethylene film of the solar battery cell 141 is 0.3 mm, and the thickness of the lower surface sealing material 144 is 0.4 mm. Or the thickness of the lower surface sealing material 144 and the upper surface sealing material 145 which consist of a vinyl acetate type film of the photovoltaic cell 141 is 0.4 mm, respectively.

  For this reason, the inventor has experimentally confirmed that the roof waterproof structure 100 of the present embodiment can effectively prevent the combustion due to flying fire even if the combustion due to flying fire penetrates the solar cell layer 140 and the waterproof layer 130. confirmed.

  Further, in the roof waterproof structure 100 of the present embodiment, the waterproof sheet 147 is provided not only on the waterproof layer 130 of the exclusive two-layer cloth but also on the uppermost solar cell layer 140, so that the waterproof sheet is formed in triplicate. Therefore, its waterproof performance is good. In addition, the waterproofness of these waterproof sheet layers is maintained by welding, fusing, or bonding the edges of the waterproof sheet layers with a solvent, heat, an adhesive, or the like.

  Here, the structure laying method of the waterproof waterproof structure 100 of the present embodiment will be briefly described below. First, a plurality of heat insulating materials 110 are laid on the upper surface of the housing 10 via a predetermined gap 111, and aluminum tapes 112 and 113 are attached to the inner surface and the upper surface of the gap 111.

  Next, the incombustible insulating layer 120 containing incombustible fibers is laid on the top surfaces of the plurality of heat insulating materials 110. The incombustible insulating layer 120 is formed in a rectangular shape elongated in the front-rear direction, and is not disposed on the upper surface of the gap 111 between the plurality of heat insulating materials 110.

  Next, the waterproof layer 130 made of a two-layer cloth sheet is laid on the upper surface of the incombustible insulating layer 120 as described above. Next, the solar cell layer 140 is laid on the top surface of the waterproof layer 130, and the plurality of solar cells 141 are wired inside the gap 111 of the heat insulating material 110. The edges of each waterproof layer are welded, fused, or bonded with a solvent, heat, adhesive, or the like.

  In the waterproof roof structure 100 laid in this way, the non-combustible insulating layer 120 is formed in a plurality of sheets that are elongated in the front-rear direction, and therefore, its construction is easy. Further, since the solar cells 141 can be wired inside the gaps 111 of the plurality of heat insulating materials 110, this wiring is also easy.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above embodiment, the non-combustible insulating layer 120 has a rectangular shape elongated in the front-rear direction and is not disposed in the upper surface opening of the gap 111 between the plurality of heat insulating materials 110, and the upper surface opening is sealed with the aluminum tape 113.

  However, the upper surface openings of the gaps 111 of the plurality of heat insulating materials 110 may also be sealed with the incombustible insulating layer 120. Furthermore, the insides of the gaps 111 of the plurality of heat insulating materials 110 may be filled with separate heat insulating members (both not shown). Such a heat insulating member can be formed of the same polystyrene foam or polyurethane as the heat insulating material 110.

  Furthermore, in the said form, although illustrated that the glass fiber of the nonflammable insulating layer 120 was formed as a nonwoven fabric, you may form as a woven fabric. Moreover, what made the resin sheet contain a short fiber (chopped strand) as a filler may be used. Moreover, in the said form, although the nonflammable fiber consisted of glass fiber and the resin sheet consisted of a polyethylene-type resin, the combination other than this is also possible.

  Needless to say, the above-described embodiment and a plurality of modifications can be combined within a range in which the contents do not conflict with each other. Further, in the above-described embodiments and modifications, the structure of each part has been specifically described, but the structure and the like can be changed in various ways within a range that satisfies the present invention.

DESCRIPTION OF SYMBOLS 10 Housing | casing 100 Waterproofing structure 110 Roof insulation material 111 Space | gap 112 Aluminum tape 113 Aluminum tape 114 Joint tape 115 Auxiliary steel plate 116 Screw 120 Nonflammable insulating layer 130 Waterproof layer 140 Solar cell layer 141 Solar cell cell 142 Adhesive layer 143 Back surface protective layer 144 Lower surface Sealing material 145 Top surface sealing material 146 Surface protective layer 147 Waterproof sheet 150 Screw 151 Disk fixing bracket 152 Flat plate fixing bracket 161 Output terminal unit 162 Connector 163 Cable

Claims (14)

A roof waterproof structure laid on the upper surface of a housing such as a roof or a roof,
A plurality of heat insulating materials laid on the upper surface of the housing via a predetermined gap;
A non-combustible insulating layer containing non-combustible fibers laid on the top surface of the plurality of heat insulating materials;
A waterproof layer laid on the top surface of the incombustible insulating layer;
A plurality of electronic component cells wired inside the gap of the heat insulating material, and an electronic component layer laid on the top surface of the waterproof layer;
A roof waterproof structure having:   The roof waterproof structure according to claim 1, comprising a structure in which the non-combustible insulating layer, the waterproof layer, and the electronic component layer, each formed in a sheet shape, are laminated.   The roof waterproof structure according to claim 1 or 2, wherein the incombustible insulating layer is made of a resin sheet containing the incombustible fiber.   4. The waterproof roof structure according to claim 3, wherein the non-combustible insulating layer includes the non-combustible fiber made of glass fiber and the resin sheet made of polyethylene resin. 5. 5. The roof waterproof structure according to claim 4, wherein the non-combustible insulating layer contains the glass fiber in a mass of 70 g / m ² or more in the resin sheet.   The roof waterproof structure according to any one of claims 1 to 5, wherein the incombustible insulating layer has the incombustible fiber formed in a sheet shape.   The waterproof structure for roof according to claim 6, wherein the non-combustible insulating layer is formed of the non-combustible fiber as a nonwoven fabric. The incombustible insulating layer is not disposed in the upper surface opening of the gaps of the plurality of heat insulating materials,
The roof waterproof structure according to any one of claims 1 to 7, wherein upper surfaces of the gaps of the plurality of heat insulating materials on which the non-combustible insulating layer is not disposed are sealed with a metal layer.   The roof waterproof structure according to claim 8, wherein inner surfaces of the gaps of the plurality of heat insulating materials are covered with a metal layer.   The roof waterproof structure according to any one of claims 1 to 7, wherein upper surface openings of the gaps of the plurality of heat insulating materials are sealed with the non-combustible insulating layer.   The roof waterproof structure according to any one of claims 1 to 7, wherein the gaps of the plurality of heat insulating materials are filled with separate heat insulating members. The electronic component layer has a solar cell that is the film-shaped electronic component cell, and a sealing material made of a polyethylene film that seals the upper surface and the lower surface of the solar cell,
The roof waterproofing according to any one of claims 1 to 11, wherein the sealing material has a thickness of 0.3 mm or less and a total thickness of 0.7 mm or less at a portion sealing the upper surface of the electronic component cell. Structure. The electronic component layer has a solar cell that is the film-shaped electronic component cell, and a sealing material made of a vinyl acetate resin film that seals the upper surface and the lower surface of the solar cell,
The thickness of the part which seals the upper surface of the said electronic component cell of the said sealing material is 0.6 mm or less, and the thickness of the part which seals a lower surface is 0.6 mm or less. The roof waterproof structure according to claim 1. A structure laying method for laying the roof waterproof structure according to any one of claims 1 to 13 on an upper surface of a housing such as a roof or a roof,
Laying a plurality of heat insulating materials through a predetermined gap on the upper surface of the housing,
Laying a non-combustible insulating layer containing non-combustible fibers on the top surface of the plurality of heat insulating materials,
Laying a waterproof layer on the top surface of the incombustible insulating layer;
A structure laying method in which an electronic component layer containing a plurality of electronic component cells wired inside the gap of the heat insulating material is laid on the upper surface of the waterproof layer.

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