Light building integrated photovoltaics (BIPV) waterproof and thermal insulation integrated roof and waterproof frame thereof

Abstract

The invention discloses a light BIPV waterproof and heat-preservation integrated roof and a waterproof frame thereof, and belongs to the field of building roofs. The system structurally comprises a photovoltaic module used for converting solar energy into electric energy to realize energy self-sufficiency of a building; the metal roof board comprises curled edges located on the two sides, bonding platforms arranged on the inner sides of the curled edges and a wave-shaped protrusion located in the middle. The photovoltaic module is mounted on the bonding platform; the roof structure can flexibly meet the requirements of different climate areas for the heat transfer coefficient of a building roof, the waterproof frame can meet the high-grade waterproof requirement of a standard roof, and lightweight optimization is conducted on products while the waterproof and heat preservation performance of the building roof is met; through the design of the embedded part assembly, the weight of the roof is transmitted to a building bearing wall body, so that the roof can be more suitable for large-span space and building roofs with strict roof load requirements.

Description

Technical Field

[0001] The present invention is a lightweight BIPV waterproof and heat-insulating integrated roof and its waterproof frame, belonging to the field of building roofs. Background Art

[0002] The popularization and application of building photovoltaic integration technology is one of the important measures to promote the low-carbon transformation of building energy use. The government has introduced a number of policies to promote the installation of photovoltaic systems on the roofs of newly built or existing industrial factories, public buildings, and residential buildings as much as possible. At the same time, various photovoltaic new energy enterprises have correspondingly launched a variety of roof BIPV products, which have been continuously optimized and improved in terms of component efficiency, product life, structural safety, price cost, etc., and the applicable scenarios have also been continuously expanded.

[0003] However, the existing products still fail to meet the performance requirements of the waterproof and heat-insulating aspects of building roofs, and there should not be too high load requirements for building roofs after adding waterproof and heat-insulating structures, especially for the roof structures of large-span spaces. Therefore, it is necessary to invent a lightweight BIPV waterproof and heat-insulating integrated roof product. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a lightweight BIPV waterproof and heat-insulating integrated roof and its waterproof frame to solve the problems.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions: A lightweight BIPV waterproof and heat-insulating integrated roof, comprising:

[0006] Photovoltaic modules, used to convert solar energy into electrical energy to achieve the energy self-sufficiency of the building;

[0007] Metal roof panels, including curled edges on both sides, a bonding platform placed inside the curled edges, and corrugated protrusions in the middle; the photovoltaic modules are installed on the bonding platform; a plurality of the metal roof panels are provided, and the curled edges of two adjacent metal roof panels abut against each other;

[0008] Support components, including purlins, fixed ends, and bonding ends; the fixed ends are inserted into the corrugated protrusions where the respective metal roof panels are located, and the bonding ends are clamped and fixed on the corrugated protrusions; the bonding ends support and fix the photovoltaic modules;

[0009] A heat-insulating layer, installed below the metal roof panel;

[0010] The embedded connection component is installed and fixed on the building load-bearing wall and fixedly connected to the support component; the embedded connection component transfers the loads of the metal roof panel and the photovoltaic module to the building load-bearing wall; the embedded connection component includes a metal plate and a J-shaped embedded bolt, wherein the metal plate and the embedded bolt are partially embedded into the building load-bearing wall; a part of the embedded bolt protrudes outside the building load-bearing wall and is fixedly connected to the purlin.

[0011] Preferably, a heat insulation pad is padded between the metal plate and the purlin to perform heat bridge breaking treatment.

[0012] Preferably, the insulation layer is made of polyurethane insulation boards with different thicknesses to form a closed roof insulation layer.

[0013] Preferably, the thermal conductivity of the polyurethane insulation board is 0.024 W / (m·K), and the material density is 35 kg / m 3 。

[0014] A waterproof frame for a lightweight BIPV waterproof and heat insulation integrated roof includes the following steps:

[0015] Step 1: After the metal plate is buried, it will be completely submerged or at least flush with the building load-bearing wall, and a waterproof coating is applied at the junction of the metal plate and the building load-bearing wall;

[0016] Step 2: Lay a waterproof coiled material on the metal roof panel and apply a waterproof coating on the waterproof coiled material;

[0017] Step 3: Fill sealant at the junction of two abutting curled edges.

[0018] Preferably, the photovoltaic module adopts a lightweight double-glass frameless photovoltaic panel, so that there is a gap between the edge of the photovoltaic panel and the curled edge; rainwater flows out from the gap.

[0019] Preferably, in Step 2, before laying the waterproof coiled material, the surface of the metal roof panel is pretreated, including cleaning, rust removal and primer coating.

[0020] Preferably, in Step 2, at the edge joint of the metal roof panel and the photovoltaic module, a hot melt welding technology is used for sealing treatment.

[0021] Beneficial effects

[0022] The roof structure of the present invention can flexibly meet the requirements of different climate zones for the heat transfer coefficient of building roofs. Its waterproof framework can meet the high-grade waterproof requirements of the standard roof. While meeting the waterproof and thermal insulation performance of the building roof, the product is optimized for lightweight. Through the design of the embedded component assembly, the roof weight is transferred to the building load-bearing wall, enabling the roof to be more adaptable to large-span spaces and building roofs with relatively strict roof load requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more apparent:

[0024] Figure 1 is a schematic structural diagram of a lightweight BIPV waterproof and thermal insulation integrated roof of the present invention;

[0025] Figure 2 is a schematic structural diagram of the support component of the present invention;

[0026] Figure 3 is a schematic structural diagram of the embedded connection component of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the technical means, creative features, achieved purposes, and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] Please refer to Figures 1 - 3 , the present invention provides a technical solution for a lightweight BIPV waterproof and thermal insulation integrated roof, including:

[0029] The photovoltaic module 1, which adopts the existing lightweight double-glass frameless photovoltaic module, is used to achieve the energy self-sufficiency of the building. The surface allows construction and maintenance personnel to step on it, eliminating the need to lay maintenance walkways, thereby increasing the photovoltaic installation capacity. The photovoltaic module 1 adopts a frameless design, which not only reduces its own weight but also facilitates rainwater to wash the surface and edge dust, reducing the impact of dust accumulation on the photoelectric efficiency of the photovoltaic module 1.

[0030] The metal roof panel 2 is made of high-strength aluminum alloy material and has excellent corrosion resistance and forming performance. The metal roof panel 2 includes curled edges 21 on both sides, an adhesive platform 22 inside the curled edges 21, and a corrugated protrusion 23 in the middle; the integrated design of the curled edges 21, the adhesive platform 22, and the corrugated protrusion 23 reduces the gaps between components and improves the overall sealing performance and stability. The photovoltaic module 1 is installed on the adhesive platform 22; there are several metal roof panels 2, and the curled edges 21 of two adjacent metal roof panels 2 are abutted. Among them, laser welding technology is used at the abutted curled edges 21 to achieve seamless connection and improve the waterproof performance. The corrugated protrusion 23 designed in the middle of the metal roof panel 2 not only enhances the structural strength but also facilitates the installation of the support component 3 and provides stable bearing capacity for the photovoltaic module 1.

[0031] The support component 3 includes a purlin 31, a fixed end 32, and an adhesive end 33, all made of lightweight and high-strength composite materials. The fixed end 32 is inserted into the corrugated protrusion 23 of the metal roof panel 2, and the adhesive end 33 is clamped and fixed on the corrugated protrusion 23 to support and fix the photovoltaic module 1. Among them, the fixed end 32 is in an "L" shape, extends to the bottom surface of the metal roof panel 2, and is connected to the embedded connection component 5 through the purlin 31 (the fixed end 32 and the purlin 31 are fixed with self-tapping screws). Specifically, the purlin 31 has two right-angled corners. One corner is inserted into the gap between two adjacent insulation layers 4, and the other corner turns to the metal plate 51, and the two are locked and fixed by the embedded bolt 52.

[0032] The insulation layer 4 is made of a high-performance polyurethane insulation board with a thermal conductivity as low as 0.024 W / (m·K) and a material density of 35 kg / m 3 , and has good heat insulation performance.

[0033] The embedded connection component 5 includes a metal plate 51 and a J-shaped embedded bolt 52. The metal plate 51 and the embedded bolt 52 are partially embedded in the building load-bearing wall 6 to ensure the stability and reliability of the connection. Part of the embedded bolt 52 protrudes outside the building load-bearing wall 6 and is fixedly connected to the purlin 31 by bolts or welding, etc., so that the pressure of the metal roof panel 2 is transmitted to the embedded bolt 52 and the building load-bearing wall 6. Further, there is a heat insulation pad between the metal plate 51 and the purlin 31 for heat insulation bridge treatment to improve the heat insulation performance of the roof. Among them, the embedded bolt 52 is designed in a J shape, so that the embedded bolt 52 can be better fastened in the building load-bearing wall 6 to prevent the roof from falling off the building load-bearing wall 6.

[0034] A waterproof frame for a lightweight BIPV waterproof and heat insulation integrated roof;

[0035] It includes the following steps:

[0036] Step 1: After the metal plate 51 is embedded, it will be completely submerged or at least flush with the building load-bearing wall 6, and a waterproof coating is applied at the junction of the metal plate 51 and the building load-bearing wall 6;

[0037] Step 2: Lay a waterproof coiled material on the metal roof panel 2, and apply a waterproof coating on the waterproof coiled material;

[0038] Step 3: Fill sealant at the junction of the crimps 21 of two abutting metal roof panels 2.

[0039] Further, for the waterproof treatment at the joint between the metal plate 51 and the building load-bearing wall 6: After the metal plate 51 is embedded in the building load-bearing wall 6, it will be completely submerged or at least flush with the wall 6. A self-healing polymer waterproof coating is applied at the junction of the metal plate 51 and the building load-bearing wall 6. In one embodiment, polyurethane waterproof coating is used. This coating can automatically repair cracks through internal chemical reactions when tiny cracks appear at the joint, maintaining the integrity of the waterproof layer.

[0040] Further, fill self-healing polymer sealant at the junction of the crimps 21 of two abutting metal roof panels 2. In one embodiment, polyurethane waterproof sealant is used, which has excellent weather resistance.

[0041] Further, for the waterproof treatment at the joint between the photovoltaic module 1 and the metal roof panel 2: The photovoltaic module 1 uses a lightweight double-glass frameless photovoltaic panel, so that there is a gap between the edge of the photovoltaic panel and the crimp 21 of the metal roof panel 2. In one embodiment, a 5-mm drainage gap is formed between the crimp 21 and the photovoltaic panel for rainwater to flow out from the gap. At the junction of the bonding platform 22 and the photovoltaic module 1, hot melt welding technology is used for sealing treatment to improve the waterproof performance.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0043] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightweight BIPV waterproof and thermal insulation integrated roof, characterized in that: Including: Photovoltaic modules, which are used to convert solar energy into electrical energy to achieve the energy self - sufficiency of the building; Metal roof panels, including curled edges on both sides, bonding platforms placed inside the curled edges, and corrugated protrusions in the middle; the photovoltaic modules are installed on the bonding platforms; several metal roof panels are provided, and the curled edges of two adjacent metal roof panels are in abutment; Support components, including purlins, fixed ends, and bonding ends; the fixed ends are inserted into the corrugated protrusions where their respective metal roof panels are located, and the bonding ends are clamped and fixed on the corrugated protrusions; the bonding ends support and fix the photovoltaic modules; Thermal insulation layer, installed under the metal roof panels; Embedded connection components, installed and fixed on the building load - bearing wall and fixedly connected to the support components; the embedded connection components transfer the loads of the metal roof panels and the photovoltaic modules to the building load - bearing wall; the embedded connection components include metal plates and J - shaped embedded bolts, where the metal plates and the embedded bolts are partially embedded into the building load - bearing wall; part of the embedded bolts protrudes outside the building load - bearing wall and is fixedly connected to the purlins.

2. A lightweight BIPV waterproof and thermal insulation integrated roof according to claim 1, characterized in that: A heat insulation pad is added between the metal plate and the purlin for heat - break treatment.

3. A lightweight BIPV waterproof and thermal insulation integrated roof according to claim 1, characterized in that: The fixed end is in an "L" shape, extends to the bottom surface of the metal roof panel, and is connected to the embedded connection component through the purlin.

4. A lightweight BIPV waterproof and heat-insulating integrated roof according to claim 1, characterized in that: The thermal insulation layer is made of polyurethane thermal insulation boards with different thicknesses to form a closed roof thermal insulation layer.

5. A lightweight BIPV waterproof and thermal insulation integrated roof according to claim 4, characterized in that: The thermal conductivity of the polyurethane insulation board is 0.024 W / (m·K), and the material density is 35 kg / m 3 .

6. A waterproof frame for a lightweight BIPV waterproof and thermal insulation integrated roof, adopting a lightweight BIPV waterproof and thermal insulation integrated roof as described in claim 1, characterized in that: Including the following steps: Step 1: After the metal plate is buried, it will be completely submerged or at least flush with the building load - bearing wall, and waterproof paint is brushed at the joint between the metal plate and the building load - bearing wall; Step 2: Waterproof coiled materials are laid on the metal roof panels, and waterproof paint is brushed on the waterproof coiled materials; Step 3: Sealant is filled at the joint of the curled edges of two abutting curled edges.

7. The waterproof frame of a lightweight BIPV waterproof and heat-insulating integrated roof according to claim 6, characterized in that: The photovoltaic module adopts a lightweight double - glass frameless photovoltaic panel, so that there is a gap between the edge of the photovoltaic panel and the curled edge; rainwater flows out from the gap.

8. The waterproof frame of a lightweight BIPV waterproof and thermal insulation integrated roof according to claim 6, characterized in that: In Step 2, before laying the waterproof coiled materials, the surface of the metal roof panel is pre - treated, including cleaning, rust removal, and primer painting.

9. The waterproof frame of a lightweight BIPV waterproof and thermal insulation integrated roof according to claim 6, characterized in that: In Step 2, at the edge joint between the metal roof panel and the photovoltaic module, hot - melt welding technology is used for sealing treatment.

Images