Photovoltaic panel cooling and dust removal device
Patent Information
- Application Number
- CN202521187149.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-06-11
AI Technical Summary
[0005]本实用新型的目的是为了解决现有技术中喷淋装置难以将整个光伏板表面覆盖，导致局部区域过热的问题，而提出的一种光伏板降温除尘装置
1、该光伏板降温除尘装置，通过安装盖和叶轮配合使用，连接管内有水源流动后，驱动叶轮旋转，进而使安装盖旋转从而改变喷嘴的喷水端角度，相较于现有定点喷头扩大了喷出水源的覆盖面积，通过光伏板表面的水流动对光伏板表面降温除尘，避免光伏板局部区域难以覆盖的问题，方便使用。
Smart Images
Figure CN224669763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic panel cooling and dust removal technology, and in particular to a photovoltaic panel cooling and dust removal device. Background Technology
[0002] Photovoltaic panels, also known as solar panels, are devices that directly convert sunlight into electrical energy. The power generation efficiency of photovoltaic panels is affected by both temperature and dust accumulation: when the temperature rises, the recombination rate of charge carriers in the semiconductor material of the battery increases, resulting in a decrease in output voltage; at the same time, dust cover will significantly hinder the absorption of light energy, so photovoltaic panels need to be cooled and dust removed.
[0003] The surface cooling and dust removal of photovoltaic panels typically employs a spray system and a robot. The spray system uses high-pressure nozzles to spray water in a parabolic pattern to the highest point of the photovoltaic panel. By tilting the photovoltaic panel, the water flows to the lower part of the panel, thus achieving the effect of dust removal and cooling. The robot, using a combination of sweeping and cleaning components, moves on the photovoltaic panel to achieve the purpose of dust removal and cooling.
[0004] When existing spraying devices are used to cool and remove dust from photovoltaic panels, they are usually set up with fixed nozzles and baffles to spray water. When the water flows into the baffles, it will spread out in an arc shape due to the influence of water tension to cool and remove dust from the photovoltaic panels. However, although the liquid sprayed by the nozzles expands the spraying area, the water flow is difficult to cover the entire surface of the photovoltaic panel, resulting in local overheating and reducing the power generation efficiency of the photovoltaic panel. Utility Model Content
[0005] The purpose of this invention is to solve the problem that existing spray devices are unable to cover the entire surface of photovoltaic panels, leading to overheating in local areas, and to propose a photovoltaic panel cooling and dust removal device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A photovoltaic panel cooling and dust removal device includes a water inlet pipe fixedly installed on the photovoltaic panel, a T-shaped connecting pipe fixedly installed on the water inlet pipe, an installation cover rotatably installed on the connecting pipe, an impeller fixedly installed inside the installation cover, the axis of the impeller coinciding with the axis of the installation cover, a water spray hole opened on the installation cover, and a nozzle fixedly installed on the installation cover, the nozzle communicating with the installation cover, the nozzle and the water spray hole being symmetrically arranged, when water flows in the connecting pipe, the impeller pushes the installation cover to rotate around the axis of the connecting pipe.
[0007] To facilitate the switching of the working state between the nozzle and the spray hole, the water outlet end of the connecting pipe is further provided with a water outlet and an arc-shaped baffle. The arc-shaped baffle fits into the mounting cover. When the mounting cover is rotated, the nozzle and the spray hole alternately switch between open and closed states.
[0008] To prevent the nozzle and water spray hole from becoming blocked during switching, preferably, the ratio of the outer diameter circumference of the arc-shaped baffle to that of the water outlet is 10:9, so that the water spray hole opens in advance when the nozzle rotates to the front of the arc-shaped baffle.
[0009] To increase the water jet area, preferably, an impact plate is fixedly installed on the nozzle. The impact plate has a parabolic cross-section, and its axis coincides with the axis of the nozzle's water jet end. The arc-shaped end face of the impact plate corresponds to the water outlet end of the nozzle. When the nozzle sprays water, the water flows to the concave end face of the impact plate and then diverges.
[0010] To maintain stable water pressure inside the mounting cover, preferably, at least five sets of spray holes are provided, and the five sets of spray holes are arranged at equal intervals. The ratio of the orifice area of the nozzle to the total orifice area of the spray holes is 1:1. When all spray holes are open, the water pressure inside the mounting cover is the same as the water pressure when the nozzles are open.
[0011] To prevent the mounting cover from falling off, preferably, a limiting groove is provided on the connecting pipe, and a limiting ring is fixedly installed on the mounting cover, with the limiting ring snapping into the limiting groove.
[0012] Compared with the prior art, this utility model provides a photovoltaic panel cooling and dust removal device, which has the following beneficial effects: 1. This photovoltaic panel cooling and dust removal device uses a mounting cover and an impeller in conjunction. When water flows in the connecting pipe, it drives the impeller to rotate, which in turn rotates the mounting cover, thereby changing the spray angle of the nozzle. Compared with existing fixed-point nozzles, it expands the coverage area of the sprayed water source. By using water flow on the surface of the photovoltaic panel, it cools and removes dust from the photovoltaic panel surface, avoiding the problem of difficult coverage of local areas of the photovoltaic panel, and is convenient to use.
[0013] 2. This photovoltaic panel cooling and dust removal device, through the setting of the impact plate, when the water flow impacts the surface of the impact plate, the water flow is diffused and sprayed through the concave end of the impact plate, further expanding the water coverage of the photovoltaic panel surface. When the water spray holes are opened, since the water spray holes are on the same horizontal plane, the water spray holes open one after another. At this time, the nozzle is in the closed state. The water spray hole that opens first has a stronger pressure, thereby spraying water to the corners of the photovoltaic panel, thereby achieving cooling and dust removal at the corners of the photovoltaic panel. Until all water spray holes are opened and the pressure inside the mounting cover is consistent with the pressure when the nozzle is opened, the water flow pressure tends to stabilize, avoiding the problem of the impeller being unable to work due to the blockage of the water outlet of the mounting cover.
[0014] The parts of this device not described herein are the same as or can be implemented using existing technologies. Compared with existing fixed-point nozzles, this utility model expands the coverage area of the sprayed water source. By using water flow on the surface of the photovoltaic panel to cool and remove dust, it avoids the problem of difficult coverage of local areas of the photovoltaic panel and is convenient to use. Attached Figure Description
[0015] Figure 1 This is an isometric structural schematic diagram of a photovoltaic panel cooling and dust removal device proposed in this utility model; Figure 2 This utility model proposes a photovoltaic panel cooling and dust removal device. Figure 2 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the connecting pipe structure of a photovoltaic panel cooling and dust removal device proposed in this utility model; Figure 4 This is a schematic diagram of the mounting cover structure of a photovoltaic panel cooling and dust removal device proposed in this utility model.
[0016] In the diagram: 1. Photovoltaic panel; 2. Water inlet pipe; 3. Connecting pipe; 31. Limiting groove; 32. Water outlet; 33. Arc-shaped baffle; 4. Mounting cover; 41. Limiting ring; 5. Nozzle; 6. Impact plate; 7. Impeller; 8. Spray hole. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example
[0019] Reference Figures 1-4A photovoltaic panel cooling and dust removal device includes a water inlet pipe 2 fixedly installed at a high position on the photovoltaic panel 1. A T-shaped connecting pipe 3 is fixedly installed on the water inlet pipe 2. An installation cover 4 is rotatably installed on the connecting pipe 3. A limit groove 31 is formed on the connecting pipe 3. A limit ring 41 is fixedly installed on the installation cover 4 and is engaged in the limit groove 31. An impeller 7 is fixedly installed inside the installation cover 4. The axis of the impeller 7 coincides with the axis of the installation cover 4. A water spray hole 8 is formed on the installation cover 4. A nozzle 5 is fixedly installed on the installation cover 4. The nozzle 5 is connected to the mounting cover 4. The nozzle 5 and the water spray hole 8 are symmetrically arranged. When the water in the connecting pipe 3 enters the mounting cover 4, the impeller 7 is affected by the impact force of the water flow, which pushes the mounting cover 4 to rotate around the axis of the connecting pipe 3. As a result, the nozzle 5 changes the position of the water spray end. Compared with the existing fixed-point nozzle, the coverage area of the sprayed water source is expanded, thereby more effectively improving the cooling and dust removal effect of this application. The water flow on the surface of the photovoltaic panel 1 cools and removes dust from the surface of the photovoltaic panel 1, avoiding the problem that the local area of the photovoltaic panel 1 is difficult to cover, and making it convenient to use.
[0020] The outlet end of the connecting pipe 3 is provided with an outlet 32 and an arc-shaped baffle 33. The arc-shaped baffle 33 is fixedly installed at the outlet end of the connecting pipe 3 and fits against the mounting cover 4. When the mounting cover 4 rotates, the nozzle 5 and the spray hole 8 alternately switch between open and closed states. There are at least five sets of spray holes 8, and the five sets of spray holes 8 are arranged at equal intervals. The ratio of the hole area of the nozzle 5 to the total hole area of the spray hole 8 is 1:1. When all the spray holes 8 are open, the water pressure inside the mounting cover 4 is consistent with the water pressure when the nozzle 5 is open, so that the water pressure tends to be stable and avoids the problem of inconsistent water pressure inside the mounting cover 4 for a long time, which causes the impeller 7 to be unable to work properly.
[0021] The ratio of the outer diameter circumference of the arc-shaped baffle 33 to that of the water outlet 32 is 10:9. When the nozzle 5 rotates to the arc-shaped baffle 33, the water spray hole 8 opens in advance. When the water spray hole 8 opens, since the water spray holes 8 are on the same horizontal plane, the water spray holes 8 open one after another. At this time, the nozzle 5 is in the closed state, and some water spray holes 8 have not rotated to the position of communicating with the water outlet 32. Therefore, the pressure inside the mounting cover 4 is relatively strong. Water is sprayed to the corner of the photovoltaic panel 1 through the water spray hole 8 that opens first, thereby achieving cooling and dust removal at the corner of the photovoltaic panel 1. At the same time, when the water spray hole 8 closes, the water spray hole 8 that closes later will also reach a farther position after being sprayed due to the increased pressure inside the mounting cover 4. By using the alternating working state of the nozzle 5 and the water spray hole 8, the water flow is maintained, and the problem of the water outlet 32 being blocked and the impeller 7 unable to work is avoided.
[0022] An impact plate 6 is fixedly installed on the nozzle 5. The cross-section of the impact plate 6 is parabolic. The axis of the impact plate 6 coincides with the axis of the water spray end of the nozzle 5. The arc-shaped end face of the impact plate 6 corresponds to the water outlet end of the nozzle 5. When the water flow impacts the surface of the impact plate 6, the water flow is sprayed in a divergent manner through the concave end of the impact plate 6, which further expands the water coverage of the photovoltaic panel 1, thereby improving the cooling and dust removal effect of the nozzle 5 on the photovoltaic panel 1.
[0023] In this utility model, when water flows in the inlet pipe 2, the water flows into the connecting pipe 3. After the outlet 32 of the connecting pipe 3 is connected to the nozzle 5, the nozzle 5 sprays water out. When the sprayed water collides with the impact plate 6, it is affected by the concave end face of the impact plate 6, causing the water flow to diverge after impacting the concave end face, thereby expanding the area of the photovoltaic panel 1 covered by the water flow. At the same time, the baffle set on the impact plate 6 can prevent the water flow from spraying backward, thus avoiding the problem of water waste. While nozzle 5 is working, the water flow in connecting pipe 3 drives impeller 7 to rotate, thus mounting cover 4 rotates and drives nozzle 5 to rotate, further expanding the coverage area of water sprayed by nozzle 5. When nozzle 5 rotates to arc-shaped baffle 33, water spray hole 8 rotates to outlet 32, thus keeping the water in connecting pipe 3 in a flowing state. The water spray hole 8 that opens first has a greater spray distance due to the increased internal pressure of mounting cover 4, thus covering the corners of photovoltaic panel 1 with water. The water spray hole 8 opens successively by rotating mounting cover 4. When all water spray holes 8 are open, the water pressure inside mounting cover 4 is the same as the pressure when nozzle 5 is open. When water spray hole 8 rotates to arc-shaped baffle 33, the water spray hole 8 that opens later will also have a greater spray distance due to the increased internal pressure of mounting cover 4, covering the other corner of photovoltaic panel 1. At this time, nozzle 5 rotates to outlet 32 again to open, realizing the alternating working state of water spray hole 8 and nozzle 5, which is convenient to use.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A photovoltaic panel cooling and dust removal device, comprising a water inlet pipe (2) fixedly installed on a photovoltaic panel (1), characterized in that, A "T"-shaped connecting pipe (3) is fixedly installed on the water inlet pipe (2), and an installation cover (4) is rotatably installed on the connecting pipe (3). An impeller (7) is fixedly installed inside the mounting cover (4). The axis of the impeller (7) coincides with the axis of the mounting cover (4). A water spray hole (8) is opened on the mounting cover (4). A nozzle (5) is fixedly installed on the mounting cover (4). The nozzle (5) is connected to the mounting cover (4). The nozzle (5) and the water spray hole (8) are symmetrically arranged. When water flows into the mounting cover (4) from the connecting pipe (3), the impeller (7) pushes the mounting cover (4) to rotate around the axis of the connecting pipe (3).
2. The photovoltaic panel cooling and dust removal device according to claim 1, characterized in that, The water outlet of the connecting pipe (3) is provided with a water outlet (32) and an arc-shaped baffle (33). The arc-shaped baffle (33) fits against the mounting cover (4), and the water outlet (32) faces the photovoltaic panel (1). When the mounting cover (4) rotates, the arc-shaped baffle (33) can intermittently close the nozzle (5) and the water spray hole (8).
3. The photovoltaic panel cooling and dust removal device according to claim 2, characterized in that, The arc length ratio of the arc-shaped baffle (33) and the outlet (32) is 10:
9.
4. The photovoltaic panel cooling and dust removal device according to claim 1, characterized in that, An impact plate (6) is fixedly installed on the nozzle (5). The cross section of the impact plate (6) is parabolic. The axis of the impact plate (6) coincides with the axis of the water spray end of the nozzle (5). The concave end face of the impact plate (6) corresponds to the water outlet end of the nozzle (5).
5. The photovoltaic panel cooling and dust removal device according to claim 1, characterized in that, The water spray holes (8) are provided in at least five sets, and the five sets of water spray holes (8) are arranged at equal intervals. The ratio of the hole area of the nozzle (5) to the total hole area of the water spray holes (8) is 1:
1.
6. The photovoltaic panel cooling and dust removal device according to claim 1, characterized in that, A limiting groove (31) is provided on the connecting pipe (3), and a limiting ring (41) is fixedly installed on the mounting cover (4), and the limiting ring (41) is engaged in the limiting groove (31).