A cleaning device for photovoltaic systems

Abstract

This invention discloses a cleaning device for a photovoltaic system. The photovoltaic system includes photovoltaic panel units and a support frame. Each photovoltaic panel unit is supported on the support frame and has a slope. The slope direction is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction is defined as the transverse direction. The cleaning device includes a spray frame, a water supply mechanism, a drive mechanism, and a transmission mechanism. The water supply mechanism connects the spray frame to an external water source. The transmission mechanism is arranged along the transverse direction and connected to the spray frame. The drive mechanism is connected to the transmission mechanism. The front end of the spray frame is provided with multiple first cleaning nozzles for cleaning the photovoltaic panel units, and the rear end of the spray frame is provided with at least one second cleaning nozzle for cleaning wastewater flowing down the longitudinal direction. It has the advantages of simple structure, high cleaning efficiency, and good cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic power generation technology, and in particular to a cleaning device for photovoltaic systems. Background Technology

[0002] Currently, many industrial and commercial rooftops are equipped with photovoltaic (PV) power generation systems. These systems require regular cleaning to remove surface dust and dirt, preventing any impact on their power output. Existing cleaning robots, with one robot cleaning the entire PV panel coverage area, take 3 to 5 days per cleaning cycle, which is very inefficient. Traditional cleaning methods are infrequent (cleaning only once every few months), and the longer the cleaning interval, the more dust and dirt accumulate, leading to a greater reduction in PV panel power output (in some areas, power output decreased by 50% or more a month after cleaning). Furthermore, the longer the cleaning interval, the more difficult it is to remove dust and dirt, thus requiring a higher level of robot intelligence to ensure thorough cleaning, resulting in higher prices (several thousand to tens of thousands of yuan per robot). Additionally, cleaning robots require manual handling to move them onto and off the roof during use and when not in use, which is time-consuming and labor-intensive. To better receive sunlight, PV systems need to be tilted, and wastewater from cleaning higher areas of the PV panels can easily remain at lower areas. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a cleaning device for photovoltaic systems that is simple in structure, has high cleaning efficiency and good cleaning effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A cleaning device for a photovoltaic system, the photovoltaic system including photovoltaic panel units and a support frame, each photovoltaic panel unit being supported on the support frame and having a slope, the slope direction being defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction being defined as the transverse direction, the cleaning device including a water spray frame, a water supply mechanism, a drive mechanism, and a transmission mechanism, the water supply mechanism being connected to an external water source, the transmission mechanism being arranged in the transverse direction and connected to the water spray frame, the drive mechanism being connected to the transmission mechanism, the front end of the water spray frame being provided with a plurality of first cleaning nozzles for cleaning the photovoltaic panel units, and the rear end of the water spray frame being provided with at least one second cleaning nozzle for cleaning wastewater flowing down in the longitudinal direction.

[0005] As a further improvement to the above technical solution: The drive mechanism includes a drive motor, and the transmission mechanism is connected to the output end of the drive motor.

[0006] The transmission mechanism includes two support frames and a steel wire rope. The two support frames are located at both ends in the lateral direction. A rotating shaft is provided on the support frame, and a roller is provided on the rotating shaft. One of the two rotating shafts is connected to the output end of the drive motor, and the steel wire rope is wound around the two rollers.

[0007] The drive mechanism includes a drive motor, a rotating shaft, and a drive wheel. The drive wheel is fixed on the rotating shaft and connected to the transmission mechanism. The rotating shaft is connected to the output end of the drive motor.

[0008] The transmission mechanism includes two support frames and a steel wire rope. The two support frames are located at both ends in the lateral direction. A rotating shaft is provided on the support frame, and a roller is provided on the rotating shaft. The steel wire rope is wound between the two rollers and is connected to the drive wheel.

[0009] The water spray frame includes a support base and a water spray pipe. Each of the first cleaning nozzles is spaced apart at the front end of the water spray pipe, and each of the second cleaning nozzles is spaced apart at the rear end of the water spray pipe. The water spray pipe is mounted on the support base, and the support base is connected to a steel wire rope.

[0010] The water supply mechanism includes a water supply pipe, one end of which is connected to a spray pipe and the other end is connected to an external water source.

[0011] The spray direction of the first cleaning nozzle is parallel to the water spray pipe, and the spray direction of the second cleaning nozzle is perpendicular to the water spray pipe.

[0012] The water spray pipe is equipped with a second cleaning nozzle at its front end and a first cleaning nozzle at its rear end.

[0013] The second cleaning nozzle is located outside the first cleaning nozzle.

[0014] The water spray pipe is set at an angle to the longitudinal direction, and the intersection point is located at the lower end of the longitudinal direction.

[0015] Compared with the prior art, the advantages of the present invention are as follows: The cleaning device for photovoltaic systems of the present invention uses a drive mechanism to drive a transmission mechanism to make a simple reciprocating motion of a water spray frame in the lateral direction to rinse and clean the photovoltaic panel units. The water supply mechanism stably increases the cleaning water source, which greatly simplifies the structure of the cleaning device and reduces costs. It can be kept on the photovoltaic system without the need for manual handling, saving time and effort and improving cleaning efficiency. In addition, the front end of the water spray frame effectively rinses the photovoltaic panel units through the first cleaning nozzle, and the rear end rinses the sewage flowing down from the photovoltaic panel units 1 through the second cleaning nozzle, avoiding sewage residue at low levels and achieving good cleaning effect. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

[0017] Figure 2 This is a partial enlarged view of the structure of Embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

[0019] Figure 4 This is a partial enlarged view of the structure of Embodiment 3 of the present invention.

[0020] Figure 5 This is a schematic diagram of the overall structure of Embodiment 4 of the present invention.

[0021] The markings in the diagram represent: 1. Photovoltaic panel unit; 2. Bracket; 3. Sprayer frame; 31. First cleaning nozzle; 32. Second cleaning nozzle; 33. Support base; 34. Spray pipe; 4. Water supply mechanism; 41. Water supply pipe; 5. Drive mechanism; 51. Drive motor; 52. Rotating shaft; 53. Drive wheel; 6. Transmission mechanism; 61. Support frame; 611. Rotating shaft; 612. Roller; 62. Steel wire rope. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: like Figure 1 and Figure 2As shown, in a first embodiment of the cleaning device for a photovoltaic system of the present invention, the photovoltaic system includes a photovoltaic panel unit 1 and a support 2. Each photovoltaic panel unit 1 is supported on the support 2 and has a slope. The slope direction is defined as the longitudinal direction, and the direction that is horizontally perpendicular to the longitudinal direction is defined as the transverse direction. The cleaning device includes a water spray frame 3, a water supply mechanism 4, a drive mechanism 5, and a transmission mechanism 6. The water supply mechanism 4 is connected to the water spray frame 3 and an external water source. The drive traction mechanism 5 is arranged in the transverse direction and is located at the end in the transverse direction. The transmission mechanism 6 is arranged in the transverse direction and is connected to the water spray frame 3. The drive mechanism 5 is connected to the transmission mechanism 6. The front end of the water spray frame 3 is provided with a plurality of first cleaning nozzles 31 for rinsing the photovoltaic panel unit 1, and the rear end of the water spray frame 3 is provided with a plurality of second cleaning nozzles 32 for rinsing the sewage flowing down in the longitudinal direction. This invention uses a drive mechanism 5 to drive a transmission mechanism 6, which in turn drives a water spray frame 3 to perform simple reciprocating motion in the lateral direction to rinse and clean the photovoltaic panel unit 1. The water supply mechanism 4 stably increases the cleaning water source, greatly simplifying the structure of the cleaning device and reducing costs. It can be readily available on the photovoltaic system, eliminating the need for manual handling, saving time and effort, and improving cleaning efficiency. In addition, the front end of the water spray frame 3 effectively rinses the photovoltaic panel unit 1 through the first cleaning nozzle 31, while the rear end uses the second cleaning nozzle 32 to rinse the wastewater flowing down from the photovoltaic panel unit 1, preventing wastewater from remaining at lower levels and achieving a good cleaning effect.

[0024] In this embodiment, the drive mechanism 5 includes a drive motor 51, and the transmission mechanism 6 is connected to the output end of the drive motor 51. Its structure is simple, and it is stable and reliable when driven by the drive motor 51.

[0025] In this embodiment, the transmission mechanism 6 includes two support frames 61 and a steel wire rope 62. The two support frames 61 are located at both ends in the lateral direction. A rotating shaft 611 is provided on the support frame 61, and a roller 612 is provided on the rotating shaft 611. One of the two rotating shafts 611 is connected to the output end of the drive motor 51, and the steel wire rope 62 is wound around the two rollers 612. In this structure, the water spray frame 3 is moved to perform water spraying and rinsing by the steel wire rope 62 wound at both ends in the lateral direction. Its structure is simple and the transmission is stable.

[0026] In this embodiment, the water spray frame 3 includes a support base 33 and a water spray pipe 34. Each first cleaning nozzle 31 is spaced apart at the front end of the water spray pipe 34, and each second cleaning nozzle 32 is spaced apart at the rear end of the water spray pipe 34. The water spray pipe 34 is mounted on the support base 33, and the support base 33 is connected to the wire rope 62. Its structure is simple and easy to install.

[0027] In this embodiment, the water supply mechanism 4 includes a water supply pipe 41, one end of which is connected to the spray pipe 34 and the other end is connected to an external water source. Water is supplied through the water supply pipe 41, which has a simple structure and low cost.

[0028] In this embodiment, the spray direction of the first cleaning nozzle 31 is perpendicular to the lateral direction, and the spray direction of the second cleaning nozzle 32 is perpendicular to the longitudinal direction. This arrangement allows the first cleaning nozzle 31 to fully cover and rinse the photovoltaic panel unit 1, while the second cleaning nozzle 32 can effectively rinse the downstream wastewater.

[0029] Example 2: like Figure 3 As shown, the second embodiment of the cleaning device for photovoltaic systems of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the drive mechanism 5 includes a drive motor 51, a rotating shaft 52, and a drive wheel 53. The drive wheel 53 is fixedly mounted on the rotating shaft 52 and connected to the transmission mechanism 6. The rotating shaft 52 is connected to the output end of the drive motor 51. The transmission mechanism 6 includes two support frames 61 and a steel wire rope 62. The two support frames 61 are located at both ends in the lateral direction. A rotating shaft 611 is provided on the support frame 61, and a roller 612 is provided on the rotating shaft 611. The steel wire rope 62 is wound between the two rollers 612 and is connected to the drive wheel 53. In this structure, the drive motor 51 drives the rotating shaft 52 to rotate, and the drive wheel 53 drives the steel wire rope 62 to move, thereby causing the water spray frame 3 to move in the lateral direction and spray water for cleaning. Its structure is simple and its movement is stable.

[0030] Example 3: like Figure 4 As shown, the third embodiment of the cleaning device for photovoltaic systems of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, a second cleaning nozzle 32 is provided at the front end of the water spray pipe 34, and a first cleaning nozzle 31 is provided at the rear end of the water spray pipe 34. The second cleaning nozzle 32 is located outside the first cleaning nozzle 31. In this structure, this arrangement further improves the cleaning effect, and the second cleaning nozzle 32, being located on the outside, can effectively treat the wastewater generated after rinsing the first cleaning nozzle 31.

[0031] Example 4: like Figure 5 As shown, the fourth embodiment of the cleaning device for photovoltaic systems of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the water spray pipe 34 is set at an angle to the longitudinal direction, and the intersection point is located at the lower end of the longitudinal direction. In this structure, by setting the water spray pipe 34 at an angle, the upper part of the longitudinal direction is cleaned first, and the lower part is cleaned later. In this way, the sewage flowing down from the upper part can be cleaned a second time, which improves the cleaning effect.

[0032] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A cleaning device for a photovoltaic system, the photovoltaic system comprising photovoltaic panel units (1) and a support (2), each photovoltaic panel unit (1) being supported on the support (2) and having a slope, the slope direction being defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction being defined as the transverse direction, characterized in that: The cleaning device includes a water spray frame (3), a water supply mechanism (4), a drive mechanism (5), and a transmission mechanism (6). The water supply mechanism (4) connects the water spray frame (3) to an external water source. The transmission mechanism (6) is arranged in the transverse direction and connected to the water spray frame (3). The drive mechanism (5) is connected to the transmission mechanism (6). The front end of the water spray frame (3) is provided with a plurality of first cleaning nozzles (31) for cleaning photovoltaic panel units (1). The rear end of the water spray frame (3) is provided with at least one second cleaning nozzle (32) for cleaning sewage flowing down in the longitudinal direction.

2. The cleaning device for photovoltaic systems according to claim 1, characterized in that: The drive mechanism (5) includes a drive motor (51), and the transmission mechanism (6) is connected to the output end of the drive motor (51).

3. The cleaning device for photovoltaic systems according to claim 2, characterized in that: The transmission mechanism (6) includes two support frames (61) and a steel wire rope (62). The two support frames (61) are located at both ends in the lateral direction. A rotating shaft (611) is provided on the support frame (61), and a roller (612) is provided on the rotating shaft (611). One of the two rotating shafts (611) is connected to the output end of the drive motor (51), and the steel wire rope (62) is wound around the two rollers (612).

4. The cleaning device for photovoltaic systems according to claim 1, characterized in that: The drive mechanism (5) includes a drive motor (51), a rotating shaft (52) and a drive wheel (53). The drive wheel (53) is fixed on the rotating shaft (52) and connected to the transmission mechanism (6). The rotating shaft (52) is connected to the output end of the drive motor (51).

5. The cleaning device for a photovoltaic system according to claim 4, characterized in that: The transmission mechanism (6) includes two support frames (61) and a steel wire rope (62). The two support frames (61) are located at both ends in the lateral direction. A rotating shaft (611) is provided on the support frame (61), and a roller (612) is provided on the rotating shaft (611). The steel wire rope (62) is wound between the two rollers (612) and is connected to the drive wheel (53).

6. The cleaning apparatus for a photovoltaic system according to any one of claims 1 to 5, characterized in that: The water spray frame (3) includes a support base (33) and a water spray pipe (34). Each of the first cleaning nozzles (31) is spaced apart at the front end of the water spray pipe (34), and each of the second cleaning nozzles (32) is spaced apart at the rear end of the water spray pipe (34). The water spray pipe (34) is mounted on the support base (33), and the support base (33) is connected to the wire rope (62).

7. The cleaning device for a photovoltaic system according to claim 6, characterized in that: The water supply mechanism (4) includes a water supply pipe (41), one end of which is connected to a spray pipe (34) and the other end is connected to an external water source.

8. The cleaning device for a photovoltaic system according to claim 7, characterized in that: The spray direction of the first cleaning nozzle (31) is parallel to the water spray pipe (34), and the spray direction of the second cleaning nozzle (32) is perpendicular to the water spray pipe (34).

9. The cleaning device for a photovoltaic system according to claim 8, characterized in that: The front end of the water spray pipe (34) is provided with a second cleaning nozzle (32), and the rear end of the water spray pipe (34) is provided with a first cleaning nozzle (31).

10. The cleaning device for a photovoltaic system according to claim 9, characterized in that: The second cleaning nozzle (32) is located outside the first cleaning nozzle (31).

11. The cleaning device for a photovoltaic system according to claim 10, characterized in that: The water spray pipe (34) is set at an angle to the longitudinal direction and the intersection point is located at the lower end of the longitudinal direction.

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