Photovoltaic panel cleaning device for photovoltaic electric power engineering

Abstract

The invention relates to the technical field of solar photovoltaic panel cleaning, and particularly discloses a photovoltaic panel cleaning device for photovoltaic power engineering, which comprises a rack, a first cleaning brush assembly, a second cleaning brush assembly, a wiping assembly, a fan assembly and a dust collection chamber, the first cleaning brush assembly and the second cleaning brush assembly are arranged at the two ends of the rack, the wiping assembly is arranged between the first cleaning brush assembly and the second cleaning brush assembly, the fan assembly generates negative pressure suction force to one of the first cleaning brush assembly and the second cleaning brush assembly and generates positive pressure air blowing to the other one of the first cleaning brush assembly and the second cleaning brush assembly, and the dust collection chamber is connected with the fan assembly; according to the device, a negative pressure area and a positive pressure area generated by the fan assembly can be isolated, it is ensured that suction airflow only acts on dust collection, positive pressure blowing can dry the photovoltaic panel surface, the closed-loop process of cleaning, collection, wiping and drying is formed, and the problem that dust is repeatedly collected due to the fact that the panel surface needs to be naturally dried for a long time after wiping in traditional water-carrying operation is solved.

Description

Technical Field

[0001] The invention relates to the technical field of solar photovoltaic panel cleaning, and in particular to a photovoltaic panel cleaning device used in photovoltaic power engineering. Background Art

[0002] With the rapid development of photovoltaic power generation technology, the large-scale deployment of solar panels has become an important direction for the application of clean energy. However, in outdoor environments, the surface of photovoltaic panels is exposed to natural conditions for a long time, and pollutants such as dust, sand, and bird droppings will gradually accumulate. Studies have shown that when the dust coverage rate on the surface of photovoltaic panels exceeds 5%, the light energy conversion efficiency will be significantly reduced (up to 30% or more), resulting in power generation loss and increased risk of permanent hot spot damage. Therefore, efficient and sustainable clean technology is of great significance to ensure the operating efficiency and life of photovoltaic systems.

[0003] At present, mainstream photovoltaic panel cleaning technologies can be divided into two categories: dry cleaning and water-based cleaning. Dry cleaning often uses a mechanical brush combined with a negative pressure adsorption device to remove dust through physical friction of the brush, and uses a negative pressure system to adsorb scattered particles to avoid secondary pollution. Although this method can remove most loose dust, it has limited cleaning effects on pollutants with strong adhesion or small particle size (such as oily particles and micron-level dust), and repeated friction may cause micro-scratches on the surface coating or glass layer of the photovoltaic panel, affecting light transmittance. Water-based cleaning technology is to soften and wash away stubborn pollutants by spraying water on the brush or photovoltaic panel surface, significantly improving the cleaning effect, but a single cleaning consumes a large amount of fresh water. In arid or remote areas, the cost of fresh water supply is high or even impractical.

[0004] Therefore, developing a photovoltaic panel cleaning technology that has low water consumption, high efficiency and adaptability to complex climates is a technical problem that needs to be urgently solved by technicians in this field. Summary of the invention

[0005] The invention discloses a photovoltaic panel cleaning device for photovoltaic power engineering to solve the above technical problems existing in the related technology.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions: The present application provides a photovoltaic panel cleaning device for photovoltaic power engineering, which includes a frame and a first cleaning brush assembly, a second cleaning brush assembly, a wiping assembly, a fan assembly and a dust collection chamber arranged on the frame; wherein: The frame is movably arranged on the photovoltaic panel, the first cleaning brush assembly and the second cleaning brush assembly are respectively arranged at two ends of the frame in a first direction, and the first direction is the moving direction of the frame; The wiping assembly is arranged on the frame, and the wiping assembly is distributed between the first cleaning brush assembly and the second cleaning brush assembly; The fan assembly connects the first cleaning brush assembly and the second cleaning brush assembly, the air inlet of the fan assembly is communicated with the dust collecting chamber, the dust collecting chamber is used to collect dust sucked by the fan under negative pressure, one of the air outlet of the fan assembly and the dust inlet of the dust collecting chamber is communicated with the first cleaning brush assembly, and the other is communicated with the second cleaning brush assembly, and the fan assembly is configured to generate negative pressure suction force to one of the first cleaning brush assembly and the second cleaning brush assembly while generating positive pressure blowing to the other.

[0007] The technical solution adopted by the present invention can achieve the following beneficial effects: The photovoltaic panel cleaning device for photovoltaic power engineering of the present application has a wiping component arranged between a first cleaning brush component and a second cleaning brush component, and the fan component is configured to generate a negative pressure suction force to one of the first cleaning brush component and the second cleaning brush component while generating a positive pressure blowing force to the other. The dust generated by the first cleaning brush component or the second cleaning brush component during cleaning is sucked into the dust collecting chamber by the negative pressure of the fan component, thereby avoiding secondary pollution of the dust on the photovoltaic panel. In addition, this layout method can isolate the negative pressure zone generated by the fan component from the positive pressure zone, thereby ensuring that the suction airflow only acts on dust collection, and the positive pressure blowing focuses on drying the surface of the photovoltaic panel, thereby forming a closed-loop process of "sweeping-collecting-wiping-drying". The surface of the photovoltaic panel can be put into use immediately after it is dried, thereby avoiding the problem of repeated dust collection caused by the need to wait for the panel surface to dry naturally for a long time after traditional water-assisted wiping. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 This is one of the structural schematic diagrams of a photovoltaic panel cleaning device for photovoltaic power engineering according to an embodiment of the present application; Figure 2 This is one of the internal structure schematic diagrams of the photovoltaic panel cleaning device used for photovoltaic power engineering in the embodiment of the present application; Figure 3 is a schematic diagram of the connection between the fan assembly and the first cleaning brush assembly and the second cleaning brush assembly in an embodiment of the present application; Figure 4This is the second schematic diagram of the internal structure of the photovoltaic panel cleaning device used in photovoltaic power engineering according to an embodiment of the present application; Figure 5 yes Figure 4 A local enlarged schematic diagram of the middle A; Figure 6 yes Figure 4 A partial enlarged schematic diagram of point B in the middle; Figure 7 is a schematic diagram of the structure of the filter in an embodiment of the present application; Figure 8 It is a schematic diagram of the application of a photovoltaic panel cleaning device for photovoltaic power engineering on a photovoltaic panel according to an embodiment of the present application.

[0010] In the figure: 100, frame; 110, roller; 200, first cleaning brush assembly; 210, housing; 220, roller brush; 300, second cleaning brush assembly; 400, wiping assembly; 410, roller shaft; 420, cleaning cloth; 440, sewage tank; 500, fan assembly; 510, fan; 511, air inlet; 512, air outlet; 520, first pipeline module; 521, first branch pipe; 522, second branch pipe; 530, second pipeline module; 531, third branch pipe; 532, fourth Branch pipe; 600, dust collecting chamber; 610, filter; 611, filter body; 612, cover body; 613, guide plate; 614, ventilation gap; 710, first three-way valve; 720, second three-way valve; 800, dust exhaust assembly; 810, dust suction pipe; 820, dust exhaust pipe; 910, squeezing roller; 1000, spray assembly; 1010, second water supply pipe; 1020, nozzle; 1110, imaging unit; 1200, elastic mechanism; 1300, water tank; 1400, photovoltaic panel. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0012] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0013] The following is combined with Figures 1 to 8 , the photovoltaic panel cleaning device for photovoltaic power engineering provided in the embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0014] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present application discloses a photovoltaic panel cleaning device for photovoltaic power engineering, which is used for cleaning a photovoltaic panel 1400. The disclosed photovoltaic panel cleaning device for photovoltaic power engineering includes a frame 100, a first cleaning brush assembly 200, a second cleaning brush assembly 300, a wiping assembly 400, a fan assembly 500 and a dust collecting chamber 600, wherein the frame 100 is the basic component of the photovoltaic panel cleaning device for photovoltaic power engineering, and can provide an installation foundation for the first cleaning brush assembly 200, the second cleaning brush assembly 300, the wiping assembly 400, the fan assembly 500 and the dust collecting chamber 600. The rack 100 is movably arranged on the photovoltaic panel 1400. For example, a guide rail is arranged on the outer side of the photovoltaic panel 1400, and a roller 110 that rolls with the guide rail is arranged at the bottom of the rack 100. By driving the roller 110 to rotate, the rack 100 can be moved on the photovoltaic panel 1400. The moving direction of the rack 100 on the photovoltaic panel 1400 is defined as a first direction. The first direction can be the length direction of the photovoltaic panel 1400 or the width direction of the photovoltaic panel 1400. In the embodiment of the present application, the first direction is preferably the length direction of the photovoltaic panel 1400, and the present application does not make any specific restrictions on this.

[0015] In the embodiment of the present application, the first cleaning brush assembly 200 and the second cleaning brush assembly 300 are respectively arranged at the two ends of the frame 100 in the first direction. The first cleaning brush assembly 200 and the second cleaning brush assembly 300 can be of the same structure and are symmetrically arranged at the two ends of the frame 100. Specifically, the first cleaning brush assembly 200 and the second cleaning brush assembly 300 both include a housing 210 and a roller brush 220 rotatably arranged in the housing 210. The bottom of the housing 210 is provided with an opening, and part of the roller brush 220 can protrude from the housing 210 through the opening and contact the panel surface of the photovoltaic panel 1400. When the frame 100 moves on the photovoltaic panel 1400, the exposed part of the roller brush 220 loosens the dust attached to the photovoltaic panel 1400 by mechanical peeling and physical contact.

[0016] In the embodiment of the present application, the fan assembly 500 is connected to the first cleaning brush assembly 200, the second cleaning brush assembly 300 and the dust collecting chamber 600. The fan assembly 500 can apply negative pressure suction force to the first cleaning brush assembly 200 and the second cleaning brush assembly 300, thereby negatively extracting the dust peeled off by the friction of the roller brush 220. It can be understood that when the fan assembly 500 is under negative pressure suction, the dust on the photovoltaic panel 1400 that is cleaned and loosened by the roller brush 220 is sucked into the shell 210 through the opening at the bottom of the shell 210, and is then sucked into the dust collecting chamber 600.

[0017] In the examples of this application, see Figure 4 , Figure 5 and Figure 6 The wiping assembly 400 is disposed on the frame 100 and is distributed between the first cleaning brush assembly 200 and the second cleaning brush assembly 300. The wiping assembly 400 is used to deeply clean the surface of the photovoltaic panel 1400 again by water operation after the first cleaning brush assembly 200 or the second cleaning brush assembly 300 has brushed away the dust on the photovoltaic panel 1400. For example, see Figure 4 and Figure 6 The wiping assembly 400 includes a roller 410, a cleaning cloth 420, a first water supply pipe (not shown) and a sewage tank 440, wherein the roller 410 can be two symmetrically arranged on the frame 100, the cleaning cloth 420 is sleeved on the two rollers 410 and can rotate with the rotation of the rollers 410. It can be understood that the cleaning cloth 420 is tensioned and sleeved on the two rollers 410 and is in frictional contact with the surface of the photovoltaic panel 1400. The first water supply pipe is used to provide a small amount of cleaning water to the cleaning cloth 420. Exemplarily, the first water supply pipe can be arranged above the cleaning cloth 420. When the first water supply pipe is turned on, it can drip a small amount of water to the cleaning cloth 420. The sewage tank 440 can be arranged in the area surrounded by the cleaning cloth 420. The sewage tank 440 is used to collect sewage generated by wiping the cleaning cloth 420.

[0018] By arranging the wiping assembly 400 between the first cleaning brush assembly 200 and the second cleaning brush assembly 300, the photovoltaic panel 1400 can be cleaned by the roller brush 220 and then deeply wiped by the cleaning cloth 420. The dry brushing mode of the roller brush 220 can loosen the dust on the photovoltaic panel 1400, which is suitable for light cleaning. The negative pressure suction of the fan assembly 500 can extract dust and some large particles of impurities in the dry brushing mode, thereby preventing the subsequent wet wiping mode from scratching the photovoltaic panel 1400, and the wiping mode with water operation can soften stubborn stains, thereby improving the cleaning efficiency of the photovoltaic panel 1400. Under normal circumstances, it is only necessary to turn on the first cleaning brush assembly 200 and the second cleaning brush assembly 300 to perform the dry brushing mode. When there are stubborn stains on the photovoltaic panel 1400 or after a long period of dry brushing mode, the wet wiping mode of the wiping assembly 400 can be turned on to reduce the consumption of cleaning water, which is particularly suitable for arid or remote areas. It can be understood that the frame 100 is equipped with a water tank 1300, which can supply water to the cleaning cloth 420 through the first water supply pipe. For example, see Figure 2 Two water tanks 1300 may be provided on the frame 100 , and the two water tanks 1300 may be distributed on both sides of the dust collecting chamber 600 .

[0019] In the embodiment of the present application, the fan assembly 500 connects the first cleaning brush assembly 200 and the second cleaning brush assembly 300, but does not generate negative pressure suction to the first cleaning brush assembly 200 and the second cleaning brush assembly 300 at the same time. Specifically, the air inlet of the fan assembly 500 is connected to the dust collecting chamber 600, and one of the air outlet of the fan assembly 500 and the dust inlet of the dust collecting chamber 600 is connected to the first cleaning brush assembly 200, and the other is connected to the second cleaning brush assembly 300. The fan assembly 500 is configured to generate negative pressure suction to one of the first cleaning brush assembly 200 and the second cleaning brush assembly 300 while generating positive pressure blowing to the other. Taking the example of the fan assembly 500 generating negative pressure suction force to the first cleaning brush assembly 200 and generating positive pressure blowing force to the second cleaning brush assembly 300, the first cleaning brush assembly 200 is cleaning and removing dust from a certain working area, and the fan assembly 500 generates negative pressure suction to collect dust into the dust collecting chamber 600. As the frame 100 continues to move, the wiping assembly 400 passes through the working area and wipes it with water, thereby deeply cleaning the working area. At this time, there are water stains on the working area after being wiped by the wiping assembly 400. As the frame 100 continues to move, when the second cleaning brush assembly 300 passes through the working area, the positive pressure blowing generated by the fan assembly 500 can quickly act on the working area to dry the board surface of the working area, thereby effectively preventing water stains from adhering to dust in the air to form stubborn stains such as mud and dirt.

[0020] In the embodiment of the present application, the wiping assembly 400 is arranged between the first cleaning brush assembly 200 and the second cleaning brush assembly 300, and the fan assembly 500 is configured to generate a negative pressure suction force to one of the first cleaning brush assembly 200 and the second cleaning brush assembly 300 while generating a positive pressure blowing force to the other. The dust generated by the first cleaning brush assembly 200 or the second cleaning brush assembly 300 during cleaning is sucked into the dust collecting chamber 600 by the fan assembly 500 under negative pressure, thereby avoiding secondary pollution of the dust on the photovoltaic panel 1400. In addition, this layout method can isolate the negative pressure zone generated by the fan assembly 500 from the positive pressure zone, ensuring that the suction airflow only acts on dust collection, and the positive pressure blowing focuses on the drying of the surface of the photovoltaic panel 1400, forming a closed-loop process of "sweeping-collecting-wiping-drying". The surface of the photovoltaic panel 1400 can be put into use immediately after being dried, thereby avoiding the problem of repeated dust collection caused by the need to wait for the surface to dry naturally for a long time after traditional water-based wiping.

[0021] In the examples of this application, see Figure 2 and Figure 3 The fan assembly 500 includes a fan 510, a first pipeline module 520 and a second pipeline module 530. The fan 510 is connected to the first cleaning brush assembly 200 through the first pipeline module 520, and the fan 510 is connected to the second cleaning brush assembly 300 through the second pipeline module 530, thereby achieving a negative pressure suction effect in one of the first cleaning brush assembly 200 and the second cleaning brush assembly 300, and a positive pressure blowing effect in the other.

[0022] For details, please refer to Figure 3 , Figure 4 and Figure 5The fan 510 has an air inlet 511 and an air outlet 512. The air inlet of the fan assembly 500 is the air inlet 511 of the fan 510, and the air outlet of the fan assembly 500 is the air outlet 512 of the fan 510. The first pipeline module 520 includes a first branch pipe 521 and a second branch pipe 522, wherein the first branch pipe 521 connects the first cleaning brush assembly 200 and the dust inlet of the dust collecting chamber 600, and the outlet of the dust collecting chamber 600 is connected to the fan. The dust collecting chamber 600 is provided with a filter 610 at the air inlet 511 of the fan 510, and the filter 610 is arranged between the dust collecting chamber 600 and the air inlet 511 of the fan 510, and the gas in the dust collecting chamber 600 can enter the fan 510 through the filter 610. When the fan 510 generates a negative pressure suction effect on the first cleaning brush assembly 200, the dust enters the dust collecting chamber 600 through the first branch pipe 521, and is deposited in the dust collecting chamber 600 after being filtered by the filter 610. The second branch pipe 522 connects the air outlet 512 of the fan 510 and the first cleaning brush assembly 200. It can be understood that when the air inlet 511 of the fan 510 generates a negative pressure suction effect on the first cleaning brush assembly 200, the pipeline of the second branch pipe 522 is in a closed state; when the air outlet 512 of the fan 510 generates a positive pressure blowing effect on the first cleaning brush assembly 200, the pipeline of the first branch pipe 521 is in a closed state. In a preferred embodiment, one end of the second branch pipe 522 is connected to the first branch pipe 521 through the first three-way valve 710, so as to achieve connection with the first cleaning brush assembly 200 through the first branch pipe 521.

[0023] In the examples of this application, see Figure 3 The second pipeline module 530 can adopt the same pipeline design as the first pipeline module 520 and be symmetrically arranged on the rack 100 with the first pipeline module 520 . Specifically, the second pipeline module 530 includes a third branch pipe 531 and a fourth branch pipe 532, wherein the third branch pipe 531 connects the second cleaning brush assembly 300 and the dust inlet of the dust collecting chamber 600, and the outlet of the dust collecting chamber 600 is connected to the air inlet 511 of the fan 510. It can be understood that there can be two dust inlets of the dust collecting chamber 600, and the two dust inlets are respectively arranged corresponding to the first branch pipe 521 and the third branch pipe 531, and the fourth branch pipe 532 connects the air outlet 512 of the fan 510 and the second cleaning brush assembly 300. It can be understood that when the air inlet 511 of the fan 510 generates a negative pressure suction effect on the second cleaning brush assembly 300, the pipeline of the fourth branch pipe 532 is in a closed state; when the air outlet of the fan 510 generates a positive pressure blowing on the second cleaning brush assembly 300, the second branch pipe 522 is in a closed state.

[0024] In a preferred embodiment, the fan assembly 500 also includes a first three-way valve 710, which is arranged on the first branch pipe 521 and located between the first cleaning brush assembly 200 and the dust inlet of the dust collecting chamber 600, and the second branch pipe 522 is connected to the first branch pipe 521 through the first three-way valve 710; similarly, the fan assembly 500 may also include a second three-way valve 720, which is arranged on the third branch pipe 531 and located between the second cleaning brush assembly 300 and the dust inlet of the dust collecting chamber 600, and the fourth branch pipe 532 is connected to the third branch pipe 531 through the second three-way valve 720.

[0025] Based on the above technical solution, when the rack 100 moves on the side of the photovoltaic panel 1400 toward the first cleaning brush assembly 200, the first three-way valve 710 can be used to control the dust collecting chamber 600 and the first branch pipe 521 to be connected and the pipeline of the second branch pipe 522 to be closed, and the second three-way valve 720 can be used to control the dust collecting chamber 600 and the third branch pipe 531 to be closed and the pipeline of the fourth branch pipe 532 to be opened. At this time, the air inlet 511 of the fan 510 negatively sucks the dust cleaned by the first cleaning brush assembly 200 through the dust collecting chamber 600 and the first branch pipe 521, and the air outlet 512 of the fan 510 blows positive pressure to the second cleaning brush assembly 300 through the fourth branch pipe 532. From the moving direction of the rack 100, the second cleaning brush assembly 300 is located at the rear end of the wiping assembly 400, so the positive pressure blowing can just act on the area wiped by the wiping assembly 400, thereby accelerating the drying of the surface of the photovoltaic panel 1400.

[0026] Similarly, when the rack 100 moves on the side of the photovoltaic panel 1400 toward the second cleaning brush assembly 300, the first three-way valve 710 can be used to control the dust collecting chamber 600 and the first branch pipe 521 to be closed, and the pipeline of the second branch pipe 522 to be opened. The second three-way valve 720 can be used to control the dust collecting chamber 600 and the third branch pipe 531 to be opened, and the pipeline of the fourth branch pipe 532 to be closed. At this time, the air inlet 511 of the fan 510 negatively sucks the dust cleaned by the second cleaning brush assembly 300 through the dust collecting chamber 600 and the third branch pipe 531, and the air outlet of the fan 510 blows positive pressure to the first cleaning brush assembly 200 through the second branch pipe 522. At this time, from the moving direction of the rack 100, the first cleaning brush assembly 200 is located at the rear end of the wiping assembly 400, so the positive pressure blowing can just act on the area wiped by the wiping assembly 400, and can also accelerate the drying of the surface of the photovoltaic panel 1400.

[0027] As can be seen from the foregoing, the dust is sucked into the dust collecting chamber 600 by negative pressure, and is deposited in the dust collecting chamber 600 after being filtered by the filter 610. In the embodiment of the present application, see Figure 5 and Figure 7The filter 610 can be arranged above the dust inlet of the dust collecting chamber 600. Specifically, the filter 610 includes a filter body 611 and a cover body 612 arranged on the periphery of the filter body 611. The cover body 612 is provided with a plurality of inclined guide plates 613. The outer height of the guide plate 613 is higher than the inner height thereof. A ventilation gap 614 is formed between two adjacent guide plates 613, and the airflow can enter the filter body 611 through the ventilation gap 614. The inclined guide plate 613 can change the direction of the dust-laden airflow, and use the inertia of the dust particles to make them lose kinetic energy after hitting the guide plate 613, and then settle to the bottom of the dust collecting chamber 600. In other words, the inclined guide plate 613 can play a preliminary screening role for the dust particles, thereby reducing the amount of particles entering the filter body 611 and extending the service life of the filter body 611. On the other hand, the inclined guide plate 613 can guide the airflow to pass through the filter body 611 evenly, avoiding excessive dust concentration and local blockage of the filter body 611 due to excessive local airflow speed. At the same time, the inclined surface of the guide plate 613 may reduce the adhesion of particulate matter, because the gravity makes it difficult for particles to accumulate on the guide plate 613.

[0028] The inventors found during the research that when the dust in the dust collecting chamber 600 accumulates to a certain extent, the dust collecting chamber 600 needs to be cleaned. The related art usually adopts the method of disassembling the dust collecting chamber 600 to discharge the accumulated dust, which makes the cleaning operation troublesome, time-consuming and labor-intensive.

[0029] In this case, see Figure 3 , Figure 4 and Figure 5 The photovoltaic panel cleaning device for photovoltaic power engineering of the embodiment of the present application further includes a dust exhaust component 800. Specifically, the dust exhaust component 800 includes a dust suction pipe 810 and a dust exhaust pipe 820. One end of the dust suction pipe 810 is placed in the dust collecting chamber 600, and the other end of the dust suction pipe 810 is connected to the air inlet 511 of the fan 510. One end of the dust exhaust pipe 820 is connected to the air outlet 512 of the fan 510, and the other end of the dust exhaust pipe 820 is placed outside the dust collecting chamber 600. In this arrangement, when the dust collecting chamber 600 needs to be cleaned, the pipelines of the dust suction pipe 810 and the dust exhaust pipe 820 can be opened. Under the negative pressure of the fan 510, the dust in the dust collecting chamber 600 is discharged from the dust collecting chamber 600 through the dust suction pipe 810, the fan 510 and the dust exhaust pipe 820.

[0030] In the embodiment of the present application, when the dust deposited in the dust collecting chamber 600 reaches a certain level and needs to be discharged and cleaned by using the dust discharge assembly 800, a dust box or other collection container can be set at the dust outlet of the dust discharge pipe 820 to uniformly collect the dust discharged from the dust collecting chamber 600, and dump it in a designated area. The volume of the dust box should be larger than the volume of the dust collecting chamber 600, and the designated area should be a dust discharge area far away from the photovoltaic panel installation area to avoid secondary pollution to the photovoltaic panel 1400. For those skilled in the art, when using the dust discharge assembly 800 to remove the dust in the dust collecting chamber 600, the dust will not be discharged directly into the current environment through the dust discharge pipe 820 to avoid secondary pollution to the photovoltaic panel, but the dust discharge pipe 820 is used to receive the collection container outside to eliminate the complicated work of disassembling and assembling the dust collecting chamber 600 for dust discharge.

[0031] For further technical solutions, see Figure 4 and Figure 5 The dust suction pipe 810 may be at least two arranged in parallel, and the entrances of the plurality of dust suction pipes 810 are distributed in different areas of the dust collection chamber 600 to minimize possible cleaning dead zones. In a preferred embodiment, the entrance of the dust suction pipe 810 is trumpet-shaped, which helps to expand the dust suction range and increase the effective dust suction area, making it easier for dust to be sucked into the dust suction pipe 810. At the same time, this design can also reduce the resistance of the airflow when entering the dust suction pipe 810, thereby improving the dust suction efficiency.

[0032] In the examples of this application, see Figure 6 The photovoltaic panel cleaning device for photovoltaic power engineering may also include an extrusion component, which includes two extrusion rollers 910, one of which is arranged on the inner side of the cleaning cloth 420, and the other is arranged on the outer side of the cleaning cloth 420, and the two extrusion rollers 910 are located above the sewage tank 440, and the two extrusion rollers 910 are in friction contact with the cleaning cloth 420, so that the sewage in the cleaning cloth 420 is squeezed and dripped into the sewage tank 440. Through the squeezing effect of the two squeezing rollers 910, on the one hand, the sewage (including dust, bird droppings, pollen and other pollutants) adsorbed by the cleaning cloth 420 can be discharged in time to avoid the sewage from seeping back to the surface of the photovoltaic panel to form mottled water stains. On the other hand, the water content of the cleaning cloth 420 can be effectively controlled by squeezing, that is, the cleaning cloth 420 is kept slightly moist but not over-wet, thereby ensuring the wiping effect of the cleaning cloth 420.

[0033] In a further technical solution, the linear speed of the periphery of the squeezing roller 910 is less than the moving speed of the cleaning cloth 420, that is, the squeezing roller 910 has a certain hysteresis compared with the cleaning cloth 420, and the speed difference between the squeezing roller 910 and the cleaning cloth 420 forms dynamic friction between the squeezing roller 910 and the cleaning cloth 420, so that the squeezing roller 910 has a "scraping" effect on the cleaning cloth 420, thereby prompting the sewage and dust hidden deep in the fiber pores of the cleaning cloth 420 to be squeezed out, which is particularly suitable for high-viscosity pollutants (such as bird droppings, etc.).

[0034] In some embodiments of this application, see Figure 1 and Figure 2 The photovoltaic panel cleaning device for photovoltaic power engineering may also include a spraying assembly 1000, which includes a second water supply pipe 1010 and a plurality of nozzles 1020 arranged on the second water supply pipe 1010. The second water supply pipe 1010 may be connected to the aforementioned water tank 1300, and the second water supply pipe 1010 extends along a second direction, the second direction is perpendicular to the first direction, and when the first direction is the length direction of the photovoltaic panel 1400, the second direction may be the width direction of the photovoltaic panel 1400, and the nozzle 1020 is arranged toward the photovoltaic panel 1400. When there are stain areas on the photovoltaic panel 1400 that are difficult to clean with the roller brush 220 (such as a guano calcification layer, an oil film, etc.), the cleaning liquid (such as water) may be sprayed through the nozzle 1020 to soften the stains, so that the cleaning cloth 420 is easier to wipe clean in the subsequent wiping process.

[0035] For further technical solutions, please continue to refer to Figure 1 and Figure 2 The photovoltaic panel cleaning device for photovoltaic power engineering may also include an imaging component, which includes a plurality of imaging units 1110 distributed along the second direction. Exemplarily, the imaging unit 1110 may be a camera. When the imaging unit 1110 detects that there is a stain area on the photovoltaic panel 1400, the nozzle 1020 corresponding to the stain area sprays cleaning liquid. By accurately locating the stain area through the imaging unit 1110, targeted treatment of stubborn stains can be achieved, avoiding unnecessary water spraying on the entire photovoltaic panel 1400, thereby saving water. At the same time, precise water spraying can reduce the situation where the cleaning cloth 420 is over-wet and improve the wiping effect.

[0036] In the examples of this application, see Figure 4The first cleaning brush assembly 200 and the second cleaning brush assembly 300 are respectively connected with an elastic mechanism 1200. For example, the elastic mechanism 1200 can be a spring. The elastic mechanism 1200 enables the first cleaning brush assembly 200 and the second cleaning brush assembly 300 to be set to float in the height direction. The surface of the photovoltaic panel 1400 may be slightly bent and deformed. The elastic floating setting of the first cleaning brush assembly 200 and the second cleaning brush assembly 300 can be adaptively adjusted according to the unevenness of the surface of the photovoltaic panel 1400, so that the roller brush 220 of the first cleaning brush assembly 200 and the second cleaning brush assembly 300 are always in contact with the surface of the photovoltaic panel 1400 to avoid missed brushing or uneven cleaning. During the cleaning process, the roller brush 220 may encounter obstacles or surface protrusions. The elasticity of the elastic mechanism 1200 can absorb the impact force and protect the surface of the photovoltaic panel 1400 from damage.

[0037] In a further technical solution, the first cleaning brush assembly 200 and the second cleaning brush assembly 300 are adjustable in height. For example, the aforementioned first cleaning brush assembly 200 or the second cleaning brush assembly 300 can be arranged on a mounting plate with a corresponding elastic mechanism 1200, and a driving mechanism for driving the mounting plate to be lifted and lowered is arranged on the frame 100. The mounting plate is lifted and lowered by the driving mechanism, thereby realizing the adjustment of the first cleaning brush assembly 200 and the second cleaning brush assembly 300 in height direction. When there are stubborn stains that are difficult to remove on the photovoltaic panel 1400, the height position of the roller brush 220 can be appropriately lowered by the lifting mechanism to increase the contact pressure, so that the roller brush 220 can be fully in contact with the stubborn stains or docking dust, thereby improving the cleaning efficiency. For example, the driving mechanism can be an electric push rod.

[0038] It should be noted that in the embodiment of the present application, the first cleaning brush assembly 200, the second cleaning brush assembly 300, the wiping assembly 400 and the extrusion assembly are all connected with a driving device, and the driving device can realize the normal operation of the first cleaning brush assembly 200, the second cleaning brush assembly 300, the wiping assembly 400 and the extrusion assembly. Exemplarily, the driving device can be a chain transmission mechanism driven by a motor, which is not elaborated in the present application.

[0039] See also Figure 2 , Figure 3 and Figure 8 When the photovoltaic panel cleaning device for photovoltaic power engineering of the embodiment of the present application is used to clean the photovoltaic panel 1400, the frame 100 can move back and forth in the length direction of the photovoltaic panel 1400, and the first cleaning brush assembly 200 and the second cleaning brush assembly 300 are respectively arranged at both ends of the frame 100 to avoid the generation of cleaning dead zones on the photovoltaic panel 1400.

[0040] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0041] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic panel cleaning device for photovoltaic power engineering, characterized in that: The invention comprises a frame (100) and a first cleaning brush assembly (200), a second cleaning brush assembly (300), a wiping assembly (400), a fan assembly (500) and a dust collection chamber (600) arranged on the frame (100); wherein: The frame (100) is movably arranged on the photovoltaic panel (1400), and the first cleaning brush assembly (200) and the second cleaning brush assembly (300) are respectively arranged at two ends of the frame (100) in a first direction, and the first direction is a moving direction of the frame (100); The wiping assembly (400) is arranged on the frame (100), and the wiping assembly (400) is distributed between the first cleaning brush assembly (200) and the second cleaning brush assembly (300); The fan assembly (500) is connected to the first cleaning brush assembly (200) and the second cleaning brush assembly (300); the air inlet of the fan assembly (500) is communicated with the dust collecting chamber (600); one of the air outlet of the fan assembly (500) and the dust inlet of the dust collecting chamber (600) is communicated with the first cleaning brush assembly (200), and the other is communicated with the second cleaning brush assembly (300); the fan assembly (500) is configured to generate a negative pressure suction force to one of the first cleaning brush assembly (200) and the second cleaning brush assembly (300) while generating a positive pressure blowing force to the other.

2. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 1, characterized in that: The fan assembly (500) comprises a fan (510), a first branch pipe (521), a second branch pipe (522), a third branch pipe (531), and a fourth branch pipe (532); wherein: The first branch pipe (521) connects the first cleaning brush assembly (200) and the dust inlet of the dust collecting chamber (600), and the second branch pipe (522) connects the first cleaning brush assembly (200) and the air outlet (512) of the fan (510); The third branch pipe (531) connects the second cleaning brush assembly (300) and the dust inlet of the dust collecting chamber (600), and the fourth branch pipe (532) connects the second cleaning brush assembly (300) and the air outlet (512) of the fan (510).

3. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 2, characterized in that: The fan assembly (500) further comprises a first three-way valve (710), the first three-way valve (710) being arranged on the first branch pipe (521), and the first three-way valve (710) being located between the first cleaning brush assembly (200) and the dust inlet of the dust collecting chamber (600), and the second branch pipe (522) being connected to the first branch pipe (521) via the first three-way valve (710); And / or, the fan assembly (500) further comprises a second three-way valve (720), the second three-way valve (720) being arranged on the third branch pipe (531), and the second three-way valve (720) being located between the second cleaning brush assembly (300) and the dust inlet of the dust collecting chamber (600), and the fourth branch pipe (532) being connected to the third branch pipe (531) via the second three-way valve (720).

4. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 2, characterized in that: It also comprises a filter (610), wherein the filter (610) is arranged between the dust collecting chamber (600) and the air inlet (511) of the fan (510), and the gas in the dust collecting chamber (600) can enter the fan (510) through the filter (610).

5. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 4, characterized in that: It also comprises a dust exhaust component (800), the dust exhaust component (800) comprising a dust suction pipe (810) and a dust exhaust pipe (820), one end of the dust suction pipe (810) is placed in the dust collecting chamber (600), the other end of the dust suction pipe (810) is connected to the air inlet (511) of the fan (510), one end of the dust exhaust pipe (820) is connected to the air outlet (512) of the fan (510), and the other end of the dust exhaust pipe (820) is placed outside the dust collecting chamber (600); And / or, the filter (610) comprises a filter body (611) and a cover body (612) arranged on the periphery of the filter body (611), the cover body (612) being provided with a plurality of obliquely arranged guide plates (613), the outer side height of the guide plates (613) being higher than the inner side height thereof, and a ventilation gap (614) being formed between two adjacent guide plates (613).

6. The photovoltaic panel cleaning device for photovoltaic power engineering according to any one of claims 1 to 4, characterized in that: The wiping assembly (400) comprises a roller (410), a cleaning cloth (420), a first water supply pipe and a sewage tank (440); wherein: There are two rollers (410), the cleaning cloth (420) is sleeved on the two rollers (410), the first water supply pipe is arranged above the cleaning cloth (420) and is used to supply water to the cleaning cloth (420), and the sewage tank (440) is arranged in the area surrounded by the cleaning cloth (420).

7. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 6, characterized in that: The invention also comprises a squeezing assembly, wherein the squeezing assembly comprises two squeezing rollers (910), wherein one of the squeezing rollers (910) is arranged on the inner side of the cleaning cloth (420), and the other squeezing roller (910) is arranged on the outer side of the cleaning cloth (420), the two squeezing rollers (910) are in frictional contact with the cleaning cloth (420), and the peripheral speed of the squeezing rollers (910) is less than the moving speed of the cleaning cloth (420).

8. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 1, characterized in that: It also includes a spraying component (1000) and an imaging component; wherein: The spray assembly (1000) comprises a second water supply pipe (1010) and a plurality of nozzles (1020) arranged on the second water supply pipe (1010), the second water supply pipe (1010) extending along a second direction, the second direction being perpendicular to the first direction, and the nozzles (1020) being arranged toward the photovoltaic panel (1400); The imaging component comprises a plurality of imaging units (1110) distributed along the second direction, and when the imaging unit (1110) detects that a stained area exists on the photovoltaic panel (1400), the nozzle (1020) corresponding to the stained area sprays cleaning liquid.

9. The photovoltaic panel cleaning device for photovoltaic power engineering according to any one of claims 2 to 4, characterized in that: The first cleaning brush assembly (200) and the second cleaning brush assembly (300) both comprise a housing (210) and a roller brush (220) rotatably disposed in the housing (210); the first branch pipe (521) is connected to the housing (210) of the first cleaning brush assembly (200), and the third branch pipe (531) is connected to the housing (210) of the second cleaning brush assembly (300); The first cleaning brush assembly (200) and the second cleaning brush assembly (300) are respectively connected with an elastic mechanism (1200), and the elastic mechanism (1200) enables the first cleaning brush assembly (200) and the second cleaning brush assembly (300) to be floated in a height direction.

10. The photovoltaic panel cleaning device for photovoltaic power engineering according to claim 8, characterized in that: The first cleaning brush assembly (200) and the second cleaning brush assembly (300) are adjustable in height direction.

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