Photovoltaic building curtain wall integrated with heat dissipation structure

Abstract

The application discloses a photovoltaic building curtain wall with integrated heat dissipation structure and relates to the technical field of curtain walls.The curtain wall body is composed of a plurality of vertical beams and a plurality of horizontal beams arranged in a grid and photovoltaic glass plates arranged in the grid.The horizontal beams separate the photovoltaic glass plates into a plurality of layers.A shunt pipe is horizontally arranged at the top of the curtain wall body.The top of the shunt pipe is provided with a communication pipe.The tail of the communication pipe is connected with a cooling water assembly.The bottom of the communication pipe is connected with a plurality of drippers.The application realizes the layered flow equalization of the cooling water by arranging flow equalization members on the horizontal beams, ensures that the cooling water uniformly covers each layer of photovoltaic glass plates, completely eliminates the cooling weak points of the lower curtain wall, and makes the cooling water accurately drip and slide along the surface of the photovoltaic glass plates, thereby avoiding the splashing of the cooling water and minimizing the waste of the cooling water.

Description

Technical Field

[0001] This invention relates to the field of curtain wall technology, specifically to a photovoltaic building curtain wall with an integrated heat dissipation structure. Background Technology

[0002] With the escalating global energy crisis and heightened environmental awareness, the solar photovoltaic industry has developed rapidly. Photovoltaic curtain walls, as an important form of building integration of solar photovoltaic technology, not only provide green energy for buildings but also enhance their aesthetics and functionality, and are widely used in various public and commercial buildings. During operation, the photovoltaic glass panels generate a large amount of heat due to photoelectric conversion. If this heat cannot be dissipated in time, it will lead to a decrease in photovoltaic conversion efficiency, and in severe cases, damage to the photovoltaic modules and a shortened lifespan of the curtain wall. Therefore, the heat dissipation structure is a crucial component of photovoltaic building curtain walls.

[0003] Currently, most existing photovoltaic building curtain walls utilize top-spraying cooling water for heat dissipation. This involves installing spray devices at the top of the curtain wall to spray cooling water onto its surface, allowing the evaporation of the water to carry away heat. However, this method has significant drawbacks: Firstly, the cooling water, after being sprayed from the top, gradually disperses during its descent due to gravity and airflow, resulting in insufficient cooling for lower sections of the curtain wall, creating weak points and uneven heat dissipation, thus failing to achieve effective heat dissipation across the entire curtain wall. Secondly, the sprayed cooling water cannot completely adhere to the curtain wall surface, with some splashing off and wasting water, increasing heat dissipation costs. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic building curtain wall with an integrated heat dissipation structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic building curtain wall with an integrated heat dissipation structure, comprising: The curtain wall body consists of several vertical beams and several horizontal beams arranged in a grid, as well as photovoltaic glass panels set within the grid. The horizontal beams divide the photovoltaic glass panels into several layers. The diversion pipe is horizontally located at the top of the curtain wall body. A connecting pipe is provided at the top of the pipe, and the tail end of the connecting pipe is connected to the cooling water assembly. Several drippers are connected at the bottom of the pipe. The flow guide channel is located on the bottom horizontal beam of the curtain wall body to realize the collection and recycling of cooling water. A plurality of flow equalization components are respectively disposed on the remaining crossbeams of the curtain wall body, which can perform stratified flow equalization of the falling cooling water. Each component includes an L-shaped plate, which is fixedly disposed on the outer wall of the crossbeam and can collect the cooling water falling from the upper photovoltaic glass panel. Several base plates are fixedly disposed at the bottom of the base plate, which corresponds one-to-one with several lower photovoltaic glass panels. Several connecting grooves are opened at the end of the base plate near the photovoltaic glass panel. A water outlet groove is opened at the bottom of the connecting groove and the top of the connecting groove is connected to the water equalization groove. Several water equalization grooves are opened on the side of the L-shaped plate near the crossbeam, which can evenly distribute the cooling water collected by the L-shaped plate to the water outlet groove, thereby realizing stratified flow equalization of cooling water.

[0006] As a further preferred embodiment of this technical solution, the cooling water assembly includes a cooling water tank, with support feet fixedly provided at the four corners of the bottom of the cooling water tank. The upper end of the cooling water tank is connected to a water inlet pipe, and the other end of the water inlet pipe is connected to a water source. The bottom of the cooling water tank is provided with a water outlet, and a connecting pipe is connected to the water outlet. An electric valve is provided between the connecting pipe and the water outlet.

[0007] As a further preferred embodiment of this technical solution, the end of the connecting pipe near the cooling water tank is higher than the other end.

[0008] As a further preferred embodiment of this technical solution, the water outlet area of ​​the electric valve is smaller than the sum of the water outlet areas of the water outlet troughs of a single flow equalization component.

[0009] As a further preferred embodiment of this technical solution, a baffle plate is provided on the horizontal upper surface of the L-shaped plate, and a plurality of electric telescopic rods are provided at the end of the baffle plate away from the water distribution tank. The fixed end of the electric telescopic rod is fixed to the vertical plate of the L-shaped plate, and the telescopic end of the electric telescopic rod is fixedly connected to the baffle plate.

[0010] As a further preferred embodiment of this technical solution, a protective plate is provided above the electric telescopic rod.

[0011] As a further preferred embodiment of this technical solution, the protective plate is fixedly mounted on the vertical plate of the L-shaped plate, and a gap is left between its bottom and the horizontal plate of the L-shaped plate to accommodate the movement of the shielding plate.

[0012] As a further preferred embodiment of this technical solution, two collection troughs are provided on both sides of the bottom of the curtain wall body. Both collection troughs are embedded in the ground and are located on the lower side of both ends of the guide trough, so as to realize the collection and recycling of cooling water.

[0013] This invention provides a photovoltaic building curtain wall with an integrated heat dissipation structure, which has the following beneficial effects: (1) By setting flow equalization components on each layer of the crossbeam, the present invention realizes the layered flow equalization of cooling water. After the L-shaped plate collects the cooling water falling from the upper layer, it is evenly distributed to each water outlet through the water equalization tank, and then drips onto the surface of the corresponding photovoltaic glass panel in the lower layer, ensuring that the cooling water evenly covers each layer of photovoltaic glass panel, completely eliminating the cooling weak points of the lower curtain wall, and improving the heat dissipation uniformity and heat dissipation effect of the entire curtain wall.

[0014] (2) The bottom plate of the flow equalization component of the present invention corresponds one-to-one with the lower photovoltaic glass plate, and the water outlet is directly facing the surface of the photovoltaic glass plate, so that the cooling water can drip precisely and slide down the surface of the photovoltaic glass plate, avoiding the splashing of cooling water, minimizing the waste of cooling water, and reducing heat dissipation costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention; Figure 2 This is a partially enlarged schematic diagram of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention; Figure 3 This is a schematic diagram of a flow equalization component for a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention; Figure 4 This is a side view of the flow equalization component of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention. Figure 5 This is a schematic diagram of the installation of the flow equalization component of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention; Figure 6 This is a schematic diagram of the flow channel of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention; Figure 7 This is a schematic diagram of the cooling water assembly of a photovoltaic building curtain wall with an integrated heat dissipation structure according to the present invention.

[0016] In the diagram: 1. Curtain wall body; 11. Vertical beam; 12. Horizontal beam; 13. Photovoltaic glass panel; 2. Diversion pipe; 21. Drip head; 22. Connecting pipe; 3. Flow equalization component; 31. L-shaped plate; 311. Water equalization trough; 32. Base plate; 321. Connecting groove; 3211. Water outlet groove; 4. Guide groove; 41. Collection groove; 5. Cooling water assembly; 51. Cooling water tank; 52. Support leg; 53. Inlet pipe; 54. Outlet; 55. Electric valve; 6. Baffle plate; 61. Electric telescopic rod; 62. Protective plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention provides a technical solution: such as Figure 1 As shown in this embodiment, a photovoltaic building curtain wall with an integrated heat dissipation structure includes a curtain wall body 1, a diversion pipe 2, a flow guide 4, several flow equalization components 3, and a cooling water assembly 5. like Figure 2 As shown, the curtain wall body 1 serves as the main structure of the photovoltaic curtain wall. It adopts a grid-like frame design and consists of several vertical beams 11, several horizontal beams 12, and several photovoltaic glass panels 13. The vertical beams 11 and horizontal beams 12 are fixedly connected by corner brackets to form a uniform grid structure. The photovoltaic glass panels 13 are embedded in the grid. The photovoltaic glass panels 13 are sealed to the vertical beams 11 and horizontal beams 12 with silicone sealant. The horizontal beams 12 divide the photovoltaic glass panels 13 into several layers.

[0019] like Figure 2 As shown, the diversion pipe 2 is horizontally fixed at the top of the curtain wall body 1, parallel to the uppermost horizontal beam 12, and its length is consistent with the width of the curtain wall body 1. A connecting pipe 22 is welded to the top of the diversion pipe 2, and the top of the connecting pipe 22 is connected to the cooling water assembly 5 for transporting cooling water. Several drippers 21 are evenly connected to the bottom of the diversion pipe 2 to ensure that the cooling water can drip evenly to the top of the curtain wall body 1, that is, the upper surface of the uppermost photovoltaic glass panel 13, and to avoid the cooling water from being concentrated and scattered.

[0020] like Figure 2 As shown, several flow equalization components 3 are respectively fixed on the remaining horizontal beams 12 of the curtain wall body 1, except for the bottom horizontal beam 12, to distribute the cooling water falling from the upper layer in layers. Figure 5As shown, the flow equalization component 3 includes an L-shaped plate 31 and several base plates 32. The L-shaped plate 31 is made of Q235 steel plate and has undergone rust prevention treatment. The L-shaped plate 31 is fixed to the outer wall of the crossbeam 12 by expansion bolts. Several water equalization grooves 311 are opened on the side of the L-shaped plate 31 near the crossbeam 12. The water equalization grooves 311 are rectangular grooves. The several water equalization grooves 311 are arranged in a straight array along the length of the L-shaped plate 31 to evenly distribute the cooling water collected by the L-shaped plate 31. The base plates 32 are made of the same steel plate as the L-shaped plate 31. The number of base plates 32... The quantity corresponds one-to-one with the quantity of the lower photovoltaic glass panel 13. The base plate 32 is fixed to the bottom of the L-shaped plate 31 by welding. The end of the base plate 32 near the photovoltaic glass panel 13 is provided with several connecting grooves 321. Each connecting groove 321 has a water outlet groove 3211 at the bottom. The top of each water outlet groove 3211 is connected to several equalizing grooves 311, so that the cooling water in the equalizing grooves 311 can be evenly distributed to each water outlet groove 3211 and then drip onto the surface of the corresponding lower photovoltaic glass panel 13, realizing the layered and uniform flow of cooling water.

[0021] like Figure 4 As shown, a baffle plate 6 is provided on the horizontal upper surface of the L-shaped plate 31. Several electric telescopic rods 61 are provided at the end of the baffle plate 6 away from the water distribution tank 311. The fixed end of the electric telescopic rod 61 is fixed to the vertical plate of the L-shaped plate 31 by bolts. The telescopic end of the electric telescopic rod 61 is fixedly connected to the baffle plate 6 by welding. The baffle plate 6 can be moved by the telescopic movement of the electric telescopic rod 61 to block the water distribution tank 311 and prevent dust and other debris from entering the water distribution tank 311 and causing blockage when the device is not in use. A protective plate 62 is provided above the electric telescopic rod 61. The protective plate 62 is fixed to the vertical plate of the L-shaped plate 31 by bolts. There is a gap between its bottom and the horizontal plate of the L-shaped plate 31. This gap is used to accommodate the movement of the baffle plate 6.

[0022] like Figure 6 As shown, the guide channel 4 is fixedly installed on the bottommost horizontal beam 12 of the curtain wall body 1. It is an L-shaped plate structure, forming a U-shaped channel with the horizontal beam 12. Its length is consistent with the width of the curtain wall body 1. It is used to collect the cooling water that slides off the bottommost photovoltaic glass panel 13. Figure 1 As shown, two collection troughs 41 are provided on both sides of the bottom of the curtain wall body 1. Both collection troughs 41 are embedded in the ground and are located on the lower side of both ends of the guide trough 4, so as to realize the collection and recycling of cooling water. After the recycled cooling water is filtered, it can be pumped to the cooling water assembly 5 for recycling, further reducing water waste.

[0023] like Figure 7As shown, the cooling water assembly 5 is used to provide cooling water for the entire heat dissipation system. It includes a cooling water tank 51, support feet 52, inlet pipe 53, outlet 54, and electric valve 55. The cooling water tank 51 is used to store cooling water. Support feet 52 are fixed at the four corners of the bottom of the cooling water tank 51. The support feet 52 are fixed to the roof with expansion bolts to support the cooling water tank 51. The upper end of the cooling water tank 51 is connected to the inlet pipe 53. The other end of the inlet pipe 53 is connected to the municipal water source or a recycled water storage device to replenish the cooling water tank 51. The bottom of the cooling water tank 51 is provided with an outlet 54. A connecting pipe 22 is connected to the outlet 54. An electric valve 55 is provided between the connecting pipe 22 and the outlet 54. The two ends of the electric valve 55 are respectively connected to the connecting pipe 22 and the outlet 54 through flange sealing.

[0024] like Figure 1 As shown, the end of the connecting pipe 22 closest to the cooling water tank 51 is higher than the other end, which facilitates the natural flow of cooling water under gravity without the need for additional power. This ensures that the cooling water can be evenly delivered to each dripper 21 of the diversion pipe 2. The water outlet area of ​​the electric valve 55 is smaller than the sum of the water outlet areas of the water outlet trough 3211 of a single flow equalization component 3, thus preventing the cooling water from accumulating and overflowing at the flow equalization component 3.

[0025] Work process: When the photovoltaic curtain wall is working, the surface temperature of the photovoltaic glass panel 13 is detected in real time by a temperature sensor installed on the surface of the photovoltaic glass panel 13. The sensor model is PT100 and is not shown in the figure. When the temperature exceeds the set threshold, the cooling system is activated. At this time, the electric telescopic rod 61 is activated, causing the baffle plate 6 to retract, opening the water distribution tank 311 of the flow equalization component 3, and the electric valve 55 is opened. The cooling water in the cooling water tank 51 enters the connecting pipe 22 through the outlet 54. Since the connecting pipe 22 is inclined, the cooling water flows naturally under the action of gravity and is transported to the distribution pipe 2. The cooling water in the distribution pipe 2 drips evenly onto the top of the curtain wall body 1, i.e., the upper surface of the uppermost photovoltaic glass panel 13, through the evenly distributed drippers 21 at the bottom, achieving an initial uniform distribution of cooling water. The cooling water slides down the surface of the uppermost photovoltaic glass panel 13, absorbing the heat from the surface of the photovoltaic glass panel 13. The sliding cooling water is collected by the L-shaped plate 31 of the flow equalization component 3 on the lower crossbeam 12. The cooling water is evenly distributed to each connecting groove 321 by several equalizing grooves 311 on the L-shaped plate 31. Then, through the water outlet groove 3211 at the bottom of the connecting groove 321, it is precisely dripped onto the surface of the corresponding photovoltaic glass panel 13 on the lower layer. In this way, through the layered equalizing effect of the flow equalizing components 3, the cooling water flows through each layer of photovoltaic glass panel 13 in sequence, realizing uniform heat dissipation of the entire curtain wall and completely eliminating the weak points of cooling in the lower layer. After heat dissipation through multiple layers, the cooling water finally slides into the guide groove 4 on the bottom crossbeam 12. The guide groove 4 collects the cooling water and transports it to the collection grooves 41 on both sides to realize the recycling of cooling water. After being filtered and cooled, the recycled cooling water can be pumped to the cooling water tank 51 for recycling, reducing water waste and reducing heat dissipation costs.

[0026] When the temperature sensor detects that the surface temperature of the photovoltaic glass panel 13 is lower than the set threshold, the electric valve 55 is closed to stop the cooling water supply. At the same time, the electric telescopic rod 61 is activated, which drives the shielding plate 6 to extend and close the water distribution tank 311 of the flow equalization component 3 to prevent debris from entering the water distribution tank 311 and complete one heat dissipation cycle.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A photovoltaic building curtain wall with an integrated heat dissipation structure, characterized in that, include: The curtain wall body (1) consists of a number of vertical beams (11) and a number of horizontal beams (12) arranged in a grid, and photovoltaic glass panels (13) arranged in the grid. The horizontal beams (12) divide the photovoltaic glass panels (13) into several layers. The diversion pipe (2) is horizontally located at the top of the curtain wall body (1), and a connecting pipe (22) is provided at the top of the connecting pipe (22). The tail of the connecting pipe (22) is connected to the cooling water assembly (5), and a number of drippers (21) are connected at the bottom. The guide channel (4) is located on the bottom beam (12) of the curtain wall body (1) to realize the collection and recycling of cooling water; A plurality of flow equalization components (3) are respectively provided on the remaining crossbeams (12) of the curtain wall body (1), which can perform layered flow equalization of the falling cooling water. It includes an L-shaped plate (31), which is fixed on the outer wall of the crossbeam (12) and can collect the cooling water falling from the upper photovoltaic glass panel (13). A plurality of bottom plates (32) are fixed at its bottom, and the plurality of bottom plates (32) correspond one-to-one with the plurality of lower photovoltaic glass panels (13). A plurality of connecting grooves (321) are opened at one end of the bottom plate (321) near the photovoltaic glass panel (13). A water outlet groove (3211) is opened at the bottom of the connecting groove (321), and the top of the groove is connected to the water equalization groove (311). The plurality of water equalization grooves (311) are opened on the side of the L-shaped plate (31) near the crossbeam (12), which can evenly distribute the cooling water collected by the L-shaped plate (31) to the water outlet groove (3211) to achieve layered flow equalization of cooling water.

2. The photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 1, characterized in that: The cooling water assembly (5) includes a cooling water tank (51), and support feet (52) are fixedly provided at the four corners of the bottom of the cooling water tank (51). The upper end of the cooling water tank (51) is connected to a water inlet pipe (53), and the other end of the water inlet pipe (53) is connected to a water source. The bottom of the cooling water tank (51) is provided with a water outlet (54). The connecting pipe (22) is connected to the water outlet (54), and an electric valve (55) is provided between the connecting pipe (22) and the water outlet (54).

3. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 2, characterized in that: The end of the connecting pipe (22) near the cooling water tank (51) is higher than the other end.

4. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 2, characterized in that: The outlet area of ​​the electric valve (55) is smaller than the sum of the outlet areas of the outlet trough (3211) of a single flow equalization element (3).

5. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 1, characterized in that: The horizontal upper surface of the L-shaped plate (31) is provided with a baffle plate (6). The baffle plate (6) is provided with a plurality of electric telescopic rods (61) at one end away from the water distribution tank (311). The fixed end of the electric telescopic rod (61) is fixed to the vertical plate of the L-shaped plate (31), and the telescopic end of the electric telescopic rod (61) is fixedly connected to the baffle plate (6).

6. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 5, characterized in that: A protective plate (62) is provided above the electric telescopic pole (61).

7. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 6, characterized in that: The protective plate (62) is fixed on the vertical plate of the L-shaped plate (31), and there is a gap between its bottom and the horizontal plate of the L-shaped plate (31) to accommodate the movement of the shielding plate (6).

8. A photovoltaic building curtain wall with an integrated heat dissipation structure according to claim 1, characterized in that: The bottom sides of the curtain wall body (1) are provided with two collection troughs (41), which are embedded in the ground and located at the lower ends of the guide trough (4) to realize the collection and recycling of cooling water.

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