A device for increasing rooftop photovoltaic safety

Abstract

The present invention discloses a device for increasing the safety of rooftop photovoltaics, which belongs to the field of photovoltaic power generation technology. It includes a partition device arranged between the edge of the photovoltaic panel and the roof, and a passage for air circulation is provided between the partition devices on opposite sides. By providing a partition device between the photovoltaic panel and the roof, the oxygen delivery in the flame area is reduced when the building is on fire, the combustion equivalence ratio is reduced, and the flame propagation speed is limited, the chimney effect caused by the restricted space generated by the installation of photovoltaic panels is reduced, and the safety of the building is improved. At the same time, there is a passage for air circulation between the partition devices on opposite sides, which can allow a certain amount of natural wind to enter between the photovoltaic panel and the roof for heat exchange, reduce the surface temperature of the photovoltaic panel, and improve the power generation efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a device for increasing rooftop photovoltaic safety. Background Art

[0002] In recent years, with the rapid development of the photovoltaic industry, distributed photovoltaics have become an increasingly important direction of market investment due to their high yield characteristics. Many companies or individuals have chosen to install rooftop photovoltaics to reduce the electricity consumption of buildings and improve economic efficiency.

[0003] However, studies have shown that installing photovoltaic panels on the roof will reduce the safety of the building. The confined space formed between the photovoltaic panels and the roof can easily lead to the chimney effect. When the roof of the building catches fire, the flames will extend along the roof surface, increasing the heat transfer of the flame to the building itself and increasing the incoming flow pressure in the confined space, thereby greatly accelerating the spread of the flame, resulting in a reduction in the overall fire resistance of the building and posing a greater safety hazard. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a device for increasing the safety of rooftop photovoltaics, which can reduce the negative impact of photovoltaic panels on the fire resistance of buildings in the event of a fire and increase overall safety.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention discloses a device for increasing the safety of rooftop photovoltaics, comprising a partition device arranged between the edge of a photovoltaic panel and the roof, wherein a passage enabling air circulation is provided between the partition devices on opposite sides; preferably, the partition device comprises a first partition device, a second partition device and partition devices on both sides; the first partition device and the second partition device are mesh structures, wherein the upper and lower ends of the first partition device are respectively connected to the upper edge of the photovoltaic panel and the roof, and the upper and lower ends of the second partition device are respectively connected to the lower edge of the photovoltaic panel and the roof.

[0007] Further preferably, the length of the first partition device and the second partition device is greater than the length of the upper and lower edges of the photovoltaic panel, and the height is greater than the height of the photovoltaic panel.

[0008] Further preferably, the first partition device and the second partition device are both mesh structures with sparse mesh and dense mesh alternately arranged, and the sparse mesh of the first partition device faces the dense mesh of the second partition device, and the dense mesh of the first partition device faces the sparse mesh of the second partition device.

[0009] Further preferably, the roof is horizontal, the partition devices on both sides are mesh structures, and the upper and lower ends of the partition devices on both sides are respectively connected to the edges of the photovoltaic panels on both sides and the roof.

[0010] Further preferably, the length of the partition devices on both sides is greater than the length of the edges on both sides of the photovoltaic panel, and the height is greater than the height of the photovoltaic panel.

[0011] Further preferably, the roof is inclined, and the partition devices on both sides are a plurality of baffles arranged at intervals, and the bottom edges of the baffles are connected to the roof.

[0012] Further preferably, the top edge of the baffle is parallel to the lower surfaces of the edges on both sides of the photovoltaic panel and there is a gap.

[0013] Further preferably, the baffles are arranged at equal intervals, and the interval is 5 to 50 cm.

[0014] The baffle on one side of the partition device on both sides faces the partition on the other side.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The present invention discloses a device for increasing the safety of rooftop photovoltaics. By setting a partition device between the photovoltaic panel and the roof, the oxygen delivery in the flame area is reduced when the building is on fire, the combustion equivalence ratio is reduced, and the flame propagation speed is limited, the chimney effect caused by the restricted space generated by the installation of the photovoltaic panel is reduced, and the safety of the building is improved. At the same time, there is a channel between the partition devices on the opposite sides for air circulation, which can allow a certain amount of natural wind to enter between the photovoltaic panel and the roof for heat exchange, reduce the surface temperature of the photovoltaic panel, and improve the power generation efficiency. The partition device includes a first partition device, a second partition device and partition devices on both sides. The structure is simple, can be conveniently installed on the roof, and is well coupled with the limited space between the roof and the photovoltaic panel. The first partition device and the second partition device with a mesh structure can effectively prevent debris from accumulating under the photovoltaic panel while allowing natural wind to flow through the lower surface of the photovoltaic panel, reduce the surface temperature of the photovoltaic panel, and improve the power generation efficiency.

[0017] Furthermore, the length of the first partition device and the second partition device is greater than the length of the upper and lower edges of the photovoltaic panel, and the height is greater than the height of the photovoltaic panel, and can fully cover the gap between the roof and the upper and lower edges of the photovoltaic panel.

[0018] Furthermore, the first partition device and the second partition device are both mesh structures with sparse mesh and dense mesh alternately arranged, and the sparse mesh and dense mesh of the two are staggered and opposed to each other, while ensuring a certain amount of air circulation, further reducing the chimney effect.

[0019] Furthermore, when the roof is horizontal, the partition devices on both sides are also mesh structures, which can also play a good blocking effect on the debris on both sides.

[0020] Furthermore, the length of the partition devices on both sides is greater than the length of the edges on both sides of the photovoltaic panel, and the height is greater than the height of the photovoltaic panel, and can fully cover the gap between the roof and the two sides of the photovoltaic panel.

[0021] Furthermore, when the roof is inclined, debris will not enter from the sides, and the use of a number of baffles arranged at intervals can effectively reduce the chimney effect, thereby reducing costs and installation difficulty.

[0022] Furthermore, the top edge of the baffle is parallel to the lower surfaces of the edges on both sides of the photovoltaic panel with a gap therebetween, which enables air to evenly enter the lower plane of the photovoltaic panel and improve the heat dissipation effect.

[0023] Furthermore, the baffle on one side of the partition devices on both sides faces the partition on the other side, thereby reducing the chimney effect while ensuring air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the device for increasing rooftop photovoltaic safety of the present invention;

[0025] Figure 2 A solution for implementing a mesh partition device;

[0026] Figure 3 It is a side view schematic diagram of the device for increasing rooftop photovoltaic safety according to the present invention.

[0027] In the figure: 1-photovoltaic panel, 2-roof, 3-first partition device, 31-horizontal bar, 32-vertical bar, 4-second partition device, 5-partition devices on both sides. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings, the contents of which are intended to explain the present invention rather than to limit it:

[0029] like Figure 1 , which is a device for increasing rooftop photovoltaic safety of the present invention, includes a partition device arranged between the edge of the photovoltaic panel 1 and the roof 2, and a channel for air circulation is provided between the partition devices on opposite sides.

[0030] In a preferred embodiment of the present invention, the partition device includes a first partition device 3, a second partition device 4 and partition devices 5 on both sides; the first partition device 3 and the second partition device 4 are mesh structures, the upper and lower ends of the first partition device 3 are respectively connected to the upper edge of the photovoltaic panel 1 and the roof 2, and the upper and lower ends of the second partition device 4 are respectively connected to the lower edge of the photovoltaic panel 1 and the roof 2.

[0031] In one embodiment of the present invention, the first partition device 3 includes a plurality of horizontal bars 31 and a plurality of vertical bars 32, which are cross-fixed to form a plurality of horizontal bars 31 and a plurality of vertical bars 32. Figure 2The mesh structure shown. Generally, the width of the horizontal strip 31 is greater than or equal to 1 cm, and the length is slightly greater than the width of the photovoltaic panel 1; the width of the vertical strip 32 is greater than or equal to 1 cm, and the length is slightly greater than the installation height of the photovoltaic panel 1 from the roof 2. The spacing between the horizontal strips 31 is greater than or equal to 5 cm and less than or equal to 30 cm; the spacing between the vertical strips 32 is greater than or equal to 5 cm and less than or equal to 30 cm. The second partition device 4 adopts a structure similar to the first partition device 3. Of course, mesh structures of other shapes can also be made according to actual needs.

[0032] In a preferred embodiment of the present invention, the lengths of the first partition device 3 and the second partition device 4 are greater than the lengths of the upper and lower edges of the photovoltaic panel 1 , and the heights thereof are greater than the height of the photovoltaic panel 1 .

[0033] In a preferred embodiment of the present invention, the first partition device 3 and the second partition device 4 are both mesh structures with sparse mesh and dense mesh alternately arranged, and the sparse mesh of the first partition device 3 faces the dense mesh of the second partition device 4, and the dense mesh of the first partition device 3 faces the sparse mesh of the second partition device 4.

[0034] When the roof 2 is horizontal, the partition devices 5 on both sides are mesh structures, and the specific structures can refer to the first partition device 3 and the second partition device 4 mentioned above, and the upper and lower ends of the partition devices 5 on both sides are respectively connected to the edges of the photovoltaic panel 1 and the roof 2. Preferably, the length of the partition devices 5 on both sides is greater than the length of the edges of the photovoltaic panel 1 on both sides, and the height is greater than the height of the photovoltaic panel 1.

[0035] When the roof 2 is inclined, Figure 3 , the partition devices 5 on both sides are a number of baffles arranged at intervals, and the bottom edge of the baffle is connected to the roof 2. Preferably, the top edge of the baffle is parallel to the lower surface of the edges of the photovoltaic panel 1 on both sides and there is a gap. Preferably, a number of baffles are arranged at equal intervals, and the interval is 5 to 50 cm. Preferably, the baffle on one side of the partition devices 5 on both sides is opposite to the interval on the other side. Generally, the length of the baffle is greater than or equal to 5 cm and less than or equal to 50 cm, and the height is less than the installation height of the photovoltaic panel 1 from the roof 2. The spacing between each baffle is greater than or equal to 5 cm and less than or equal to 50 cm.

[0036] When the distance between the photovoltaic panel 1 and the roof 2 is large, two layers of baffles can be installed while the size of the baffle remains unchanged, one layer is installed on the roof 2 with the lower side connected to the surface of the roof 2, and the other layer is installed on the photovoltaic panel 1 with the upper side connected to the lower surface of the photovoltaic panel 1.

[0037] The effects of the present invention are further described in detail below in conjunction with specific embodiments:

[0038] The photovoltaic panel 1 installed on the roof 2 is 211.1 cm long and 104.6 cm wide. The inclination angle of the roof 2 is 20°, and the installation height of the photovoltaic panel 1 from the roof 2 is 40 cm.

[0039] like Figure 2 The first partition device 3 and the second partition device 4 are filter mesh structures composed of several horizontal bars 31 and vertical bars 32, wherein the horizontal bar 31 has a width of 1.5 cm and a length of 225 cm, which is slightly larger than the width of the photovoltaic panel 1; the vertical bar 32 has a width of 1.5 cm and a length of 45 cm, which is slightly larger than the installation height of the photovoltaic panel 1 from the roof 2. The spacing between each horizontal bar 31 is 7 cm, and the spacing between each vertical bar 32 is 7 cm; the partition devices 5 on both sides select a layer of baffles composed of several baffles, which are vertically installed on the roof 2 on both sides of the photovoltaic panel 1, and the lower side of the baffles is in contact with the surface of the roof 2; the baffles are parallelograms with the same lower side length as the inclination angle of the roof 2, with an angle of 70°, and each baffle is 25 cm long, 30 cm high, and 7.5 cm apart.

[0040] The above is only part of the embodiments of the present invention. Although some terms are used in the present invention, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present invention. It is contrary to the spirit of the present invention to interpret them as any additional restrictions. The above is only to further illustrate the content of the present invention with examples for easier understanding, but it does not mean that the embodiments of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention.

Claims

1. A device for increasing rooftop photovoltaic safety, characterized in that: It comprises a partition device arranged between the edge of a photovoltaic panel (1) and a roof (2), wherein a passage enabling air to circulate is provided between the partition devices on opposite sides; the partition device comprises a first partition device (3), a second partition device (4) and partition devices (5) on both sides; the first partition device (3) and the second partition device (4) are mesh structures, the upper and lower ends of the first partition device (3) are respectively connected to the upper edge of the photovoltaic panel (1) and the roof (2), and the upper and lower ends of the second partition device (4) are respectively connected to the lower edge of the photovoltaic panel (1) and the roof (2); The lengths of the first partition device (3) and the second partition device (4) are greater than the lengths of the upper and lower edges of the photovoltaic panel (1), and the heights are greater than the height of the photovoltaic panel (1); The first partition device (3) and the second partition device (4) are both mesh structures with sparse mesh and dense mesh arranged alternately, and the sparse mesh of the first partition device (3) faces the dense mesh of the second partition device (4), and the dense mesh of the first partition device (3) faces the sparse mesh of the second partition device (4); The roof (2) is horizontal, the partition devices (5) on both sides are mesh structures, and the upper and lower ends of the partition devices (5) on both sides are respectively connected to the edges of both sides of the photovoltaic panel (1) and the roof (2); The length of the partition devices (5) on both sides is greater than the length of the edges on both sides of the photovoltaic panel (1), and the height is greater than the height of the photovoltaic panel (1); The roof (2) is inclined, and the partition devices (5) on both sides are a plurality of baffles arranged at intervals, and the bottom edges of the baffles are connected to the roof (2); The top edge of the baffle is parallel to the lower surfaces of the edges on both sides of the photovoltaic panel (1) and there is a gap between them.

2. The device for increasing rooftop photovoltaic safety according to claim 1, characterized in that: Several baffles are arranged at equal intervals, and the intervals are 5 to 50 cm.

3. The device for increasing rooftop photovoltaic safety according to claim 1, characterized in that: The baffle plate on one side of the partition devices (5) on both sides faces the partition on the other side.

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