Photovoltaic curtain wall

Abstract

The utility model relates to the technical field of photovoltaic building integration, and discloses a photovoltaic curtain wall, which comprises a plurality of glass assemblies arranged in an array, and a plurality of photovoltaic modules arranged in the array, each photovoltaic assembly is arranged at the interval between every two adjacent glass assemblies, the photovoltaic assemblies are outwards staggered by a first distance relative to the outer surfaces of the glass assemblies, and ventilation gaps are formed between the photovoltaic assemblies and the adjacent glass assemblies. According to the photovoltaic curtain wall provided by the utility model, the photovoltaic assembly is arranged in a staggered manner relative to the outer surface of the glass assembly, so that a ventilation gap is formed between the photovoltaic assembly and the glass assembly. The ventilation gap provides an extra space, is beneficial to air circulation and promotes heat dissipation, thereby effectively reducing the working temperature of the photovoltaic module, and optimizing the heat dissipation performance of the photovoltaic curtain wall.

Description

Technical Field

[0001] This utility model relates to the field of building-integrated photovoltaics (BIPV) technology, specifically to a photovoltaic curtain wall. Background Technology

[0002] With the continued growth of global energy demand, photovoltaic technology has been widely used in the building sector due to its clean and efficient characteristics. Building-integrated photovoltaic (BIPV) technology integrates photovoltaic modules directly into the building's exterior walls, effectively reducing building energy consumption while also improving the building's aesthetics and environmental performance. Among these technologies, photovoltaic curtain walls, as a key form of BIPV, are widely used in green building projects due to their combination of decoration and power generation.

[0003] However, existing photovoltaic (PV) curtain wall designs have certain technical limitations. Traditional PV curtain walls typically employ a planar installation method, with the PV modules flush with the glass curtain wall surface. While this design is structurally simple, it limits heat dissipation, especially when the PV modules are generating electricity continuously. The heat on the module surface is difficult to dissipate effectively, leading to increased operating temperatures, reduced power generation efficiency, and a shortened lifespan. Furthermore, high-temperature environments may accelerate the aging of module materials, further impacting the long-term reliability of the curtain wall. Utility Model Content

[0004] In view of this, the present invention provides a photovoltaic curtain wall to solve the problem of poor heat dissipation effect of photovoltaic curtain walls in the prior art.

[0005] This utility model provides a photovoltaic curtain wall, comprising: a plurality of glass components arranged in an array, with a gap between adjacent glass components; a photovoltaic component disposed at the gap between adjacent glass components, wherein the photovoltaic component is offset outward from the outer surface of the glass component by a first distance, and a ventilation gap is formed between the photovoltaic component and the adjacent glass component.

[0006] With the above-described configuration, the photovoltaic (PV) modules are offset from the outer surfaces of the glass modules, creating a ventilation gap between them. This gap provides additional space, facilitating airflow and heat dissipation, thereby effectively reducing the operating temperature of the PV modules. Lower operating temperatures not only improve the power generation efficiency of the PV modules but also extend their lifespan. Furthermore, the spacing between the PV modules and the glass modules effectively prevents direct contact between them, reducing the risk of material aging due to heat buildup, enhancing the overall reliability of the photovoltaic curtain wall, and optimizing its heat dissipation performance.

[0007] Optionally, the photovoltaic module has an air supply device on its back side.

[0008] The aforementioned setup, with its air supply device on the back of the photovoltaic modules, further enhances heat dissipation. This device blows air towards the back of the photovoltaic modules, promoting more efficient heat transfer and dissipation, thereby reducing the module's temperature. Lower temperatures improve the power generation efficiency of the photovoltaic modules and reduce potential damage or performance degradation caused by overheating. Furthermore, the introduction of the air supply device makes the photovoltaic wall's heat dissipation system more proactive and controllable, thus improving overall heat dissipation performance and system stability, further enhancing the long-term effectiveness of the photovoltaic wall.

[0009] Optionally, there is a second distance between the air supply device and the back of the photovoltaic module.

[0010] The aforementioned setup, establishing a second distance between the air supply device and the back of the photovoltaic module, helps optimize airflow and heat exchange. This distance ensures that the air supply device can effectively deliver air to the back of the photovoltaic module within an appropriate range, without affecting heat dissipation due to being too close or too far. Through proper distance control, airflow can be evenly distributed, ensuring more balanced heat dissipation across the entire photovoltaic module and improving heat dissipation efficiency.

[0011] Optionally, a first fastener is connected to the glass assembly, one end of which is connected to the glass assembly, and the other end of which extends toward the back of the glass assembly.

[0012] With the above configuration, the first fastener securely connects the glass assembly and provides additional support towards the back of the glass assembly through its extension. This enhances the overall stability of the photovoltaic curtain wall and ensures a more robust structural connection between the glass and photovoltaic modules. By providing stronger support and stability, the durability and reliability of the photovoltaic curtain wall are further improved, ensuring that structural failures are less likely to occur during long-term operation.

[0013] Optionally, the first fixing member includes: an integral fixing member and a separate fixing member, the integral fixing member and the separate fixing member being symmetrically arranged relative to the glass assembly, the separate fixing member including a male column and a female column arranged in parallel, the male column and the female column being snap-fit ​​connected.

[0014] With the above setup, the separate fasteners fix the glass and photovoltaic modules horizontally on the mounting plane, while the integrated fasteners fix them vertically, effectively and reliably securing them to the curtain wall plane in all directions. The male and female columns are connected to embedded parts within the building wall via connectors, providing a foundation for reliable curtain wall fixation.

[0015] Optionally, a second fixing member is connected to the photovoltaic module, one end of the second fixing member is connected to the photovoltaic module, and the other end of the second fixing member extends toward the back of the photovoltaic module.

[0016] Through the above-described design, the second fastener further enhances the stability of the connection between the photovoltaic module and other structural components. The extended portion of the second fastener faces the back of the photovoltaic module, providing additional support to ensure the module remains stable during long-term use and prevents loosening or displacement due to vibration or external impact.

[0017] Optionally, one end of the second fastener extending toward the back of the photovoltaic module is fixedly connected to one side of the top of the first fastener.

[0018] Through the above-described configuration, the second fixing member provides a stable and reliable support structure for the photovoltaic module. One end of the second fixing member is fixed to the first fixing member and the glass module, thus securing the photovoltaic module in its installation position and reducing the risk of displacement or shaking caused by external factors. The second fixing member, connected to the first fixing member, utilizes its own length to create a gap between the photovoltaic module and the glass module, ensuring that the photovoltaic module is always in a suitable working position, which helps maintain its normal power generation function and the integrity of the overall structure.

[0019] Optionally, the photovoltaic module is photovoltaic glass, and the photovoltaic glass is connected to the second fastener by structural adhesive.

[0020] The above-mentioned design enhances the bonding strength between the photovoltaic glass and the fasteners, ensuring the stability and firmness of the photovoltaic glass during use and improving the safety of the curtain wall. The flexibility of the structural adhesive can alleviate stress caused by temperature differences or wind loads, reducing the risk of damage, while also providing excellent sealing performance to prevent moisture penetration and extend the service life of the curtain wall. This simplifies the installation process, improves construction efficiency, and enhances the reliability and adaptability of the photovoltaic curtain wall.

[0021] Optionally, a heat dissipation plate is provided inside the ventilation gap, the heat dissipation plate is placed below the photovoltaic module, and the heat dissipation plate has a number of evenly distributed ventilation holes.

[0022] Through the above-described design, the heat sink not only provides support for the photovoltaic modules but also increases the surface area for heat transfer, improving heat dissipation efficiency, reducing the operating temperature of the photovoltaic modules, thereby increasing power generation efficiency and extending their service life. The uniform distribution of ventilation holes ensures the uniformity of the heat dissipation process, preventing localized overheating and further optimizing the thermal management performance of the photovoltaic curtain wall. This design improves the overall heat dissipation effect of the curtain wall and enhances the stability and reliability of the system.

[0023] Optionally, it also includes a thermal insulation component, the thermal insulation component including a partition placed in the gap space, the partition having a thermal insulation layer fixed thereon.

[0024] Through the above-described design, the combined use of the partition and insulation layer effectively isolates heat from the external high-temperature environment, preventing heat from entering the building interior, thereby improving the building's thermal insulation performance and reducing energy consumption. Simultaneously, the insulation layer material effectively inhibits heat accumulation within the photovoltaic curtain wall, further optimizing the thermal management of the photovoltaic modules and improving power generation efficiency. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an overall schematic diagram of a specific embodiment of the photovoltaic curtain wall provided in this utility model.

[0027] Figure 2 for Figure 1 Sectional view of A in the middle;

[0028] Figure 3 for Figure 1 Sectional view of B;

[0029] Figure 4 for Figure 1 Sectional view of C;

[0030] Figure 5 for Figure 1 Sectional view of D.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Glass assembly; 2. Photovoltaic module; 3. Air supply device; 4. Male column; 5. Female column; 6. Middle column; 7. Upper crossbeam; 8. Middle crossbeam; 9. Lower crossbeam; 10. Second fastener; 11. Heat sink; 12. Ventilation hole; 13. Partition; 14. Insulation layer. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] like Figure 1 The above is an overall effect diagram of the photovoltaic curtain wall provided in this embodiment. The shaded area in the diagram represents the photovoltaic module 2, and the blank area represents the glass module 1. Cross-sectional views at four different connection points are shown below. Figures 2 to 5 The embodiments of this utility model are further described below.

[0035] like Figure 2 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment, including: glass component 1 and photovoltaic component 2.

[0036] Specifically, the glass components 1 have multiple glass components arranged in an array, with a gap between adjacent glass components 1; the photovoltaic components 2 are arranged at the gap between adjacent glass components 1, the photovoltaic components 2 are offset outward from the outer surface of the glass components 1 by a first distance, and a ventilation gap is formed between the photovoltaic components 2 and the adjacent glass components 1.

[0037] In this embodiment, the staggered design of the photovoltaic module 2 relative to the outer surface of the glass module 1 creates a ventilation gap between the photovoltaic module 2 and the glass module 1. This ventilation gap not only effectively promotes airflow and helps dissipate heat, but also effectively reduces the operating temperature of the photovoltaic module 2, thereby improving power generation efficiency. Furthermore, the spacing design between the glass module 1 and the photovoltaic module 2 ensures sufficient heat dissipation space for the photovoltaic module 2, enabling it to better exchange heat with the external environment, further reducing performance degradation and module aging caused by high temperatures.

[0038] It should be noted that this embodiment does not limit the specific selection of photovoltaic module 2 and glass module 1. In this embodiment, glass module 1 is a triple-glazed, two-cavity (argon-filled) high thermal performance glass. This glass module 1 adopts a three-layer glass structure, and argon gas is filled between the two layers of glass, which can effectively improve the thermal insulation performance of the glass and reduce heat conduction. Argon gas, as a gas filler, has good thermal insulation properties, which can effectively mitigate the impact of external temperature on photovoltaic module 2 and further improve the overall heat dissipation efficiency of the photovoltaic curtain wall.

[0039] like Figure 1As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment, wherein the back of the photovoltaic module 2 has an air supply device 3.

[0040] Specifically, the air supply device 3 is a ventilator. The ventilator is connected to the aluminum alloy main column and the aluminum alloy central column through ST4.8*16mm stainless steel pan head self-tapping screws. One side of the ventilator is the gap space formed by the photovoltaic module 2 and the glass module 1, and the other side of the ventilator is connected to the interior of the building. Air can be actively sent to the back of the photovoltaic module 2 to enhance the heat dissipation effect and effectively promote the air circulation on the back of the photovoltaic module 2, so that the heat can be quickly removed and further reduce the operating temperature of the photovoltaic module 2.

[0041] In other embodiments, the distribution device may also be an electric fan system, which includes a set of electric fans that automatically adjust the fan speed through an intelligent temperature control device to adapt to the real-time operating temperature of the photovoltaic module 2.

[0042] like Figure 1 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment, wherein the air supply device 3 and the back of the photovoltaic module 2 have a second distance.

[0043] Specifically, this second distance, through a reasonable interval setting, ensures that the air supply device 3 can effectively guide airflow to the back of the photovoltaic module 2, while avoiding excessively concentrated or uneven airflow. This design ensures that air is fully diffused on the back of the photovoltaic module 2, thereby maximizing heat dissipation. The second distance can also be adjusted according to different ambient temperatures and wind speeds, enabling the air supply device 3 to maintain efficient heat dissipation performance under various operating conditions.

[0044] like Figure 1 , Figure 3 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. A first fixing member is connected to the glass component 1. One end of the first fixing member is connected to the glass component 1, and the other end of the first fixing member extends toward the back of the glass component 1.

[0045] Specifically, the first fastener is a frame structure, with one end connected to the glass assembly 1 and the other end extending towards the back of the glass assembly 1, effectively providing additional support. This structural design enhances the connection stability between the photovoltaic module 2 and the glass assembly 1 through the extended portion, ensuring that the photovoltaic module 2 is not easily affected by external impacts or temperature changes during long-term use, thereby maintaining its positional stability.

[0046] like Figure 2 , Figure 4As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. The first fixing component includes: an integral fixing component and a separate fixing component.

[0047] Specifically, all the first fasteners are made of aluminum alloy. The integral fastener and the separate fasteners are symmetrically arranged relative to the glass assembly 1. The integral fastener is arranged vertically in the curtain wall plane. The separate fasteners include a male column 4, a female column 5, and a middle column 6 arranged parallel in the horizontal direction of the curtain wall plane. The male column 4 and the female column 5 are connected to the grooved embedded parts by aluminum alloy hangers, aluminum alloy supports, M12x100mm stainless steel adjusting bolts, and M16X60mm T-bolts. The male column 4 and the female column 5 are connected by snap-fit. The integral fastener includes an upper horizontal beam 7, a middle horizontal beam 8, and a lower horizontal beam 9 arranged parallel in the vertical direction of the curtain wall plane.

[0048] further, Figure 2 and Figure 3 This is a top-view cross-sectional view of the curtain wall at different locations. From left to right, the view shows a mother column 5, a male column 4, and a central column 6. Second fasteners 10 are connected to the male column 4 and the central column 6. Figure 2 As shown, the second fixing members 10 on the public column 4 and the central column 6 fix the two sides of the photovoltaic module 2, while the central column 6 and the mother column 5 in another set of separate fixing members on the right fix the two sides of the glass module 1, thereby realizing the alternating arrangement of the photovoltaic module 2 and the glass module 1 on the same layer. Figure 3 As shown, the second fixing member 10 on the public column 4 and the central column 6 fixes both sides of the photovoltaic module 2. The central column 6 and the public column 4 in another set of separate fixing members on the right side are also fixed with photovoltaic modules 2, thereby realizing the horizontal connection of continuous photovoltaic modules 2.

[0049] Figure 4 and Figure 5 This is a side view cross-section of the curtain wall at different locations. From top to bottom, the beams are the lower horizontal beam 9, the upper horizontal beam 7, and the middle horizontal beam 8. Figure 4 As shown, when fixing photovoltaic modules 2 and glass modules 1 at different layers, both the upper crossbeam 7 and the middle crossbeam 8 are connected to second fixing members 10. The upper crossbeam 7 and the middle crossbeam 8 connect the photovoltaic modules 2, while the middle crossbeam 8 and the lower crossbeam 9 in the adjacent integral fixing member connect the glass modules 1, thereby realizing the spaced arrangement of photovoltaic modules 2 and glass modules 1 at different layers. Figure 5 As shown, in order to fix the photovoltaic modules 2 between different layers and maintain a certain interval, second fixing members 10 are provided on the upper crossbeam 7, the middle crossbeam 8 and the lower crossbeam 9, so that photovoltaic modules 2 are connected between every two adjacent crossbeams, thereby realizing the longitudinal connection of continuous photovoltaic modules 2.

[0050] like Figure 3 , Figure 5As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. A second fixing member 10 is connected to the photovoltaic module 2. One end of the second fixing member 10 is connected to the photovoltaic module 2, and the other end of the second fixing member 10 extends toward the back of the photovoltaic module 2.

[0051] Specifically, the second fastener 10 is a support structure. One end of the second fastener 10 is connected to the photovoltaic module 2, and the other end extends towards the back of the photovoltaic module 2, providing additional support and stability to the photovoltaic module 2. This extended portion helps to evenly distribute the weight and external forces of the photovoltaic module 2, preventing deformation or loosening of the module due to uneven stress. The second fastener 10, through its supporting function, offsets the mounting screen of the photovoltaic module 2 from the mounting plane of the glass module 1, creating a ventilation gap and providing conditions for heat dissipation of the curtain wall.

[0052] like Figure 2 , Figure 3 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. One end of the second fixing member 10 extending toward the back of the photovoltaic module 2 is fixedly connected to one side of the top of the first fixing member.

[0053] Specifically, second fixing members are fixedly connected to the male column 4, female column 5, and middle column 6 in the first fixing component, forming a stable support structure and ensuring the horizontal fixation of the photovoltaic module 2. Second fixing members are also fixedly connected to the upper crossbeam 7, middle crossbeam 8, and lower crossbeam 9 in the first fixing component, ensuring the vertical fixation of the photovoltaic module 2. The height of the second fixing members forms the first distance between the photovoltaic module 2 and the glass module 1, and this first distance can be adjusted by changing the height of the second fixing members according to actual needs.

[0054] like Figure 3 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. The photovoltaic module 2 is photovoltaic glass, and the photovoltaic glass is connected to the second fastener 10 by structural adhesive.

[0055] Specifically, photovoltaic module 2 consists of 5+1.14PVB+3 crystalline silicon+1.14PVB+5mm thick laminated semi-tempered photovoltaic glass. This photovoltaic glass is firmly bonded to the second fastener 10, ensuring the stability of photovoltaic module 2 within the entire photovoltaic curtain wall. The structural adhesive possesses excellent bonding performance and weather resistance, effectively resisting the effects of external environmental factors such as temperature changes, humidity, and ultraviolet radiation, guaranteeing the fixation effect of the photovoltaic glass during long-term use. This simplifies the installation process, reduces the use of mechanical fasteners, and effectively disperses stress, preventing stress concentration between the photovoltaic glass and the fasteners, thereby reducing the risk of glass breakage.

[0056] like Figure 2 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment. A heat dissipation plate 11 is provided inside the ventilation gap. The heat dissipation plate 11 is placed below the photovoltaic module 2. The heat dissipation plate 11 has a plurality of evenly distributed ventilation holes 12.

[0057] Specifically, the heat dissipation plate 11 is placed below the photovoltaic module 2, and its surface is provided with a number of evenly distributed ventilation holes 12. The addition of the heat dissipation plate 11 effectively improves the heat dissipation efficiency of the photovoltaic curtain wall. The heat dissipation plate 11 can absorb the heat generated by the photovoltaic module 2 and dissipate the heat into the ventilation gaps through the ventilation holes 12, thereby removing the heat through airflow and helping to reduce the operating temperature of the photovoltaic module 2. The setting of the heat dissipation plate 11 also provides a certain supporting effect for the photovoltaic module 2, enhancing the stability and durability of the overall structure of the photovoltaic curtain wall, ensuring that it can maintain a low temperature under various environmental conditions, and effectively extending the service life of the photovoltaic system.

[0058] like Figure 2 As shown, this is a specific implementation of the photovoltaic curtain wall provided in this embodiment, which also includes a heat insulation component. The heat insulation component includes a partition 13 placed in the gap space, and a heat insulation layer 14 is fixed on the partition 13.

[0059] Specifically, the partition 13 is a 1.5mm thick galvanized fireproof steel plate, and the heat insulation layer 14 is a 100mm thick 140kg Class A fireproof rock wool, effectively isolating the gap between the photovoltaic module 2 and the glass module 1, ensuring that heat is not directly transferred to the other side of the photovoltaic module 2 or the glass module 1 through this space. The heat insulation layer 14 is fixed to the partition 13 and has excellent heat insulation performance, effectively reducing heat conduction, preventing external heat sources from entering the back of the photovoltaic module 2, and further reducing the operating temperature of the photovoltaic module 2.

[0060] Working principle:

[0061] By combining photovoltaic module 2 with glass module 1 to form a system structure with ventilation gaps and heat dissipation plate 11, good thermal management performance is achieved. In this structure, photovoltaic module 2 is placed in the gap between adjacent glass modules 1 and is offset relative to the surface of glass module 1 to form ventilation gaps. A ventilator is installed in the ventilation gaps, allowing air to be actively introduced to the back of photovoltaic module 2 to promote air circulation, enhance heat dissipation, and reduce the operating temperature of photovoltaic module 2. Heat dissipation plate 11 is located below photovoltaic module 2, and the design of ventilation holes 12 further enhances the heat dissipation effect, effectively dissipating the heat generated by photovoltaic module 2. In addition, the curtain wall also includes a thermal insulation component, consisting of partition plate 13 and thermal insulation layer 14, to effectively isolate external heat sources, reduce heat transfer to the building interior, and improve the building's thermal insulation performance. Photovoltaic module 2 uses photovoltaic glass and is connected to the second fastener 10 by structural adhesive to ensure module stability and good thermal conductivity.

[0062] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope of the present invention.

Claims

1. A photovoltaic curtain wall, characterized in that, include: Glass assembly (1) having a plurality of glass assemblies arranged in an array, with a gap between adjacent glass assemblies (1); A photovoltaic module (2) is disposed at the interval between two adjacent glass modules (1). The photovoltaic module (2) is offset outward from the outer surface of the glass module (1) by a first distance, and a ventilation gap is formed between the photovoltaic module (2) and the adjacent glass module (1).

2. The photovoltaic curtain wall according to claim 1, characterized in that, The photovoltaic module (2) has an air supply device (3) on its back.

3. The photovoltaic curtain wall according to claim 2, characterized in that, There is a second distance between the air supply device (3) and the back of the photovoltaic module (2).

4. The photovoltaic curtain wall according to claim 1, characterized in that, A first fastener is connected to the glass assembly (1), one end of which is connected to the glass assembly (1), and the other end of which extends toward the back of the glass assembly (1).

5. The photovoltaic curtain wall according to claim 4, characterized in that, The first fixing component includes an integral fixing component and a split fixing component. The integral fixing component and the split fixing component are symmetrically arranged relative to the glass assembly (1). The split fixing component includes a male column (4) and a female column (5) arranged in parallel. The male column (4) and the female column (5) are snap-fitted together.

6. The photovoltaic curtain wall according to claim 4, characterized in that, A second fastener (10) is connected to the photovoltaic module (2). One end of the second fastener (10) is connected to the photovoltaic module (2), and the other end of the second fastener (10) extends toward the back of the photovoltaic module (2).

7. The photovoltaic curtain wall according to claim 6, characterized in that, One end of the second fastener (10) extending toward the back of the photovoltaic module (2) is fixedly connected to one side of the top of the first fastener.

8. The photovoltaic curtain wall according to claim 6, characterized in that, The photovoltaic module (2) is a photoelectric glass, which is connected to the second fastener (10) by structural adhesive.

9. The photovoltaic curtain wall according to any one of claims 1-8, characterized in that, A heat sink (11) is provided inside the ventilation gap. The heat sink (11) is placed below the photovoltaic module (2). The heat sink (11) has a number of evenly distributed ventilation holes (12).

10. The photovoltaic curtain wall according to any one of claims 1-8, characterized in that, It also includes a heat insulation component, which includes a partition (13) placed in the gap space, and a heat insulation layer (14) is fixed on the partition (13).

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