Outdoor photovoltaic grid-connected cabinet

Abstract

The invention discloses an outdoor photovoltaic grid-connected cabinet, and belongs to the technical field of photovoltaic grid-connected cabinets, the outdoor photovoltaic grid-connected cabinet comprises a cabinet body, a fan arranged on the cabinet body, a fixing frame slidably arranged in the cabinet body, and an airflow plate obliquely arranged on the fixing frame and used for cleaning the interior of the cabinet body, and the airflow plate is communicated with the fan; the dust collecting plate is arranged on the fixing frame and used for collecting dust, the dust collecting plate is arranged on the lower side of the airflow plate, the airflow plate and the dust collecting plate are arranged in a V shape, the end of the dust collecting plate is longer than that of the airflow plate, and the dust collecting plate comprises a sliding rod arranged on the fixing frame in a sliding mode and a track plate arranged in the cabinet body and movably making contact with the sliding rod; and the dust collecting plate and the airflow plate are arranged between the two sliding rods, so that the cleaning efficiency and quality of the equipment are further improved, and internal parts are prevented from being damaged in the cleaning process.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic grid-connected cabinet technology, and particularly relates to outdoor photovoltaic grid-connected cabinets. Background Technology

[0002] Outdoor photovoltaic grid-connected cabinets, as the core equipment connecting photovoltaic power generation systems to the power grid, are exposed to complex outdoor environments such as wind, sand, dust, and humidity for extended periods, making them prone to accumulating large amounts of dust inside. This dust mainly consists of sand particles, metal debris, and fibrous impurities from the air. If not cleaned regularly, it will gradually adhere to the surfaces of electrical components, leading to decreased heat dissipation efficiency, reduced insulation performance, and even short circuits and poor contact, seriously affecting the stable operation and lifespan of the equipment. Currently, the industry commonly uses cleaning rollers to clean the interior of grid-connected cabinets. However, the internal structure of photovoltaic grid-connected cabinets is complex, integrating a large number of precision electrical components such as circuit breakers, inverters, sensors, and terminals. These components are installed at varying heights, with some located in confined spaces such as the top and corners of the cabinet. During operation, the bristles or brush head of the cleaning roller must come into direct contact with the surface of these components. Due to the diverse materials of these components (such as plastic, metal, and ceramic), and the relatively weak impact resistance of some parts (such as circuit boards and chip pins), they are easily damaged by the mechanical collisions and friction of the cleaning roller. Furthermore, the limited length and flexibility of the cleaning roller make it difficult for operators to precisely control the cleaning force and angle for components installed at high heights or in concealed locations, easily leading to missed areas. Excessive force can also cause components to loosen or fall off. Especially when dealing with densely packed terminal blocks and thin wires, the soft bristles of the cleaning roller may become entangled in the wires, causing deformation of the terminals and further increasing the risk of equipment failure. Therefore, traditional cleaning roller methods are no longer sufficient to meet the safety and thoroughness requirements of outdoor photovoltaic grid-connected cabinets. For example, the patent with the number CN202510358352.2 exhibits the aforementioned problems, potentially damaging internal electrical components during cleaning and affecting equipment usability. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides an outdoor photovoltaic grid-connected cabinet, which solves the problem that the electrical components inside the cabinet are easily damaged during the cleaning process of existing equipment, and that the cleaning is not thorough enough.

[0004] This invention is implemented as follows: an outdoor photovoltaic grid-connected cabinet includes a cabinet body, a fan mounted on the cabinet body, a fixed frame slidably mounted inside the cabinet body, and further includes: An airflow plate, inclinedly mounted on a fixed frame, is used for cleaning the inside of the cabinet and is connected to a fan. A dust collection plate is mounted on a fixed frame for collecting dust. The dust collection plate is located below the airflow plate, and the airflow plate and the dust collection plate are arranged in a V-shape. The end of the dust collection plate is longer than the end of the airflow plate and is used to receive the airflow generated by the fixed frame. A path assembly, installed inside the cabinet, is used to adjust the distance of airflow injection according to the height of electrical components when driving the dust collection plate and airflow plate to move. It includes a sliding rod slidably installed on a fixed frame and a track plate installed inside the cabinet and in movable contact with the sliding rod. The dust collection plate and airflow plate are arranged between the two sliding rods.

[0005] As a preferred embodiment of the present invention, the movable component is disposed within the cabinet and is used to drive the fixed frame to move. This includes rotating two first threaded rods disposed within the cabinet, and the two first threaded rods are connected in a transmission manner. The fixed frame is threadedly connected between the two first threaded rods.

[0006] As a preferred embodiment of the present invention, the end of the dust collection plate near the track plate is arc-shaped, and the surface of the dust collection plate is provided with a damp non-woven fabric.

[0007] As a preferred embodiment of the present invention, the airflow plate has a plurality of air holes evenly distributed on the side near the dust collection plate, and the airflow plate is set at an acute angle to the inner wall of the cabinet.

[0008] As a preferred embodiment of the present invention, the path assembly further includes a movable plate fixedly disposed between two sliding rods, the airflow plate being fixedly disposed on the movable plate, the dust collection plate being rotatably disposed on the movable plate, and a spring for resetting the movable plate being sleeved on the sliding rod.

[0009] As a preferred embodiment of the present invention, an auxiliary wheel is installed at the end of the sliding rod, and the auxiliary wheel is in active contact with the track plate. The surface of the track plate is uneven, and the uneven position is set relative to the height of the electrical components.

[0010] As a preferred embodiment of the present invention, the bottom of the cabinet is provided with a collection box for collecting dust from the surface of the dust collection plate, and the collection box is provided with a cleaning component for cleaning the dust collection plate.

[0011] As a preferred embodiment of the present invention, the cleaning component includes a first gear installed on one side of the dust collection plate, a rack that is fixedly disposed inside the collection box and movably meshes with the dust collection plate, and a scraper for cleaning the dust collection plate is slidably disposed inside the collection box.

[0012] As a preferred embodiment of the present invention, the drive assembly is mounted on the cabinet and is used to drive the movement of the fixing frame and the scraper. It includes rotating a second threaded rod mounted inside the collection box. The scraper is threadedly connected to the second threaded rod. A second gear is mounted on the first threaded rod. A gearbox is provided at the end of the second threaded rod, and a third gear is provided at the input end of the gearbox. A drive motor is mounted on the cabinet. Two half gears are mounted at the output end of the drive motor, which mesh with the second gear and the third gear respectively. The teeth of the two half gears are staggered.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes the movement of an airflow plate and a dust collection plate within the device, combined with airflow generated by a fan. This airflow acts on the electrical components through the airflow plate, reducing contact between the airflow plate and the components during cleaning. This prevents damage to connectors or capacitors caused by contact during cleaning. The airflow also avoids dead zones during cleaning, ensuring both efficiency and safety. The airflow acting on the electrical components through the airflow plate provides even heat dissipation, resulting in higher cooling efficiency. The dust collection plate filters impurities from the airflow, preventing dust from becoming airborne. The path assembly controls the distance between the airflow plate and the electrical components, preventing contact or excessive proximity that could damage them during cleaning. This further improves the practicality and ease of use of the equipment, while ensuring safety during cleaning. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure from the left side of the present invention; Figure 2 This is a schematic diagram of the front view structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure from a partial frontal view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention from a partial rear view. Figure 5 This is a schematic diagram of the internal structure of the invention from a partial lower view. Figure 6 This is a schematic diagram of the structure from the right side of the present invention; Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0015] In the picture: 1. Cabinet; 2. Fan; 3. First threaded rod; 4. Fixing frame; 5. Airflow plate; 6. Dust collection plate; 7. Sliding rod; 8. Auxiliary wheel; 9. Track plate; 10. Spring; 11. First gear; 12. Rack; 13. Collection box; 14. Second threaded rod; 15. Scraper; 16. Second gear; 17. Gearbox; 18. Third gear; 19. Drive motor; 20. Half gear; 21. Moving plate. Detailed Implementation

[0016] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0017] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figures 1 to 7 As shown in the embodiment of the present invention, the outdoor photovoltaic grid-connected cabinet includes a cabinet body 1, a fan 2 mounted on the cabinet body 1, a fixed frame 4 slidably mounted inside the cabinet body 1, and further includes: An airflow plate 5, which is inclinedly mounted on the fixed frame 4, is used for cleaning the inside of the cabinet 1. The airflow plate 5 is connected to the fan 2. A dust collection plate 6 is installed on the fixed frame 4 for collecting dust. The dust collection plate 6 is located below the airflow plate 5, and the airflow plate 5 and the dust collection plate 6 are arranged in a V-shape. The end of the dust collection plate 6 is longer than the end of the airflow plate 5, and is used to receive the airflow generated by the fixed frame 4. The path assembly, set inside the cabinet 1, is used to adjust the distance of the airflow jet according to the height of the electrical components when driving the dust collection plate 6 and the airflow plate 5 to move. It includes a sliding rod 7 slidably set on the fixed frame 4, and a track plate 9 set inside the cabinet 1 and in active contact with the sliding rod 7. The dust collection plate 6 and the airflow plate 5 are set between the two sliding rods 7. When working, refer to Figure 4 and 5By controlling the movement of the fixed frame 4 within the cabinet 1, the airflow plate 5 and dust collection plate 6 are moved. Simultaneously, the fan 2 is turned on to generate airflow. When the fan 2 generates airflow, the airflow enters the airflow plate 5 through the external hose and is then discharged through the airflow plate 5. At this time, the airflow can act evenly on the electrical components within the cabinet 1. It not only lifts up the dust on the electrical components, but also cools them evenly. When the airflow lifts up the dust, since the dust collection plate 6 is located below the airflow plate 5, the airflow will gradually pass through the dust collection plate 6, allowing the dust collection plate 6 to fully collect the dust in the air and prevent the dust from flying. When the airflow plate 5 and dust collection plate 6 move, the track plate 9 can effectively control the distance between the airflow plate 5 and the electrical components, so that the airflow plate 5 can always maintain an equidistant distance from the electrical components. This ensures the cleaning effect of the airflow and reduces contact with the electrical components, preventing damage to the electrical components and further improving the cleaning effect of the equipment while avoiding damage to the electrical components. This invention utilizes the movement of the airflow plate 5 and dust collection plate 6 within the device. Combined with the airflow generated by the fan 2, the airflow passes through the airflow plate 5 and acts on the electrical components, thereby reducing contact between the airflow plate 5 and the electrical components during cleaning. This prevents damage to the connectors or capacitors of the electrical components due to contact during cleaning. Furthermore, the airflow avoids dead zones during cleaning, ensuring both efficiency and safety. The airflow acting on the electrical components through the airflow plate 5 provides even heat dissipation, resulting in higher heat dissipation efficiency. The dust collection plate 6 filters impurities in the airflow, preventing dust from flying. The path assembly controls the distance between the airflow plate 5 and the electrical components, preventing contact or excessive close proximity that could damage the electrical components during cleaning. This further improves the practicality and ease of use of the equipment while ensuring safety during cleaning.

[0019] As a preferred embodiment of the present invention, the movable component is disposed inside the cabinet 1 and is used to drive the fixed frame 4 to move. It includes two first threaded rods 3 that are rotatably disposed inside the cabinet 1, and the two first threaded rods 3 are connected in a transmission manner. The fixed frame 4 is threadedly connected between the two first threaded rods 3. refer to Figure 1 By rotating the two first threaded rods 3 in the forward and reverse directions, the fixed frame 4 can be effectively driven to move the airflow plate 5 and the dust collection plate 6, thereby realizing the automatic cleaning of the equipment and making the cleaning of the equipment more convenient and faster.

[0020] As a preferred embodiment of the present invention, the end of the dust collection plate 6 near the track plate 9 is arc-shaped, and the surface of the dust collection plate 6 is provided with a damp non-woven fabric. The end of the dust collection plate 6 is arc-shaped, and the end of the dust collection plate 6 is longer than the end of the airflow plate 5. refer to Figure 4 When the airflow plate 5 generates airflow, the airflow blows onto the electrical components. At the same time, the airflow acts on the arc-shaped surface, causing the airflow to flow back. This airflow then passes through the damp non-woven fabric on the dust collection plate 6, allowing the non-woven fabric to adsorb dust in the gas. Simultaneously, the airflow cleaning process prevents the dust from generating a large amount of static electricity, thus avoiding its adsorption on other locations and further improving the cleaning effect of the equipment.

[0021] As a preferred embodiment of the present invention, the airflow plate 5 is provided with a plurality of air holes evenly distributed on the side near the dust collection plate 6, and the airflow plate 5 is set at an acute angle to the inner wall of the cabinet 1. refer to Figure 4 and 5 The airflow plate 5 forms an acute angle with the inner wall of the cabinet 1. Together with the dust collection plate 6 at the bottom, it can effectively receive the airflow, allowing the airflow to carry the dust to the dust collection plate 6. The dust can then be effectively adsorbed and collected by the dust collection plate 6, preventing the dust from flying and further improving the cleaning efficiency and quality of the equipment.

[0022] As a preferred embodiment of the present invention, the path assembly further includes a movable plate 21 fixedly disposed between two sliding rods 7, an airflow plate 5 fixedly disposed on the movable plate 21, a dust collection plate 6 rotatably disposed on the movable plate 21, and a torsion spring disposed at the connection between the dust collection plate 6 and the movable plate 21, and a spring 10 for resetting the movable plate 21 sleeved on the sliding rod 7. refer to Figure 5 When the fixed frame 4 moves the movable plate 21, the sliding rod 7 slides and extends according to the shape of the track plate 9. When the sliding rod 7 slides and extends, the spring 10 is compressed and reset at the same time, which can effectively drive the sliding rod 7 to move. This ensures the distance between the airflow plate 5 and the electrical components, preventing the distance from being too far or too close, which would affect the cleaning efficiency and quality of the airflow plate 5. The torsion spring can effectively ensure that the dust collection plate 6 is set at a certain angle, so that even if it is flipped, it can be reset to the predetermined angle.

[0023] As a preferred embodiment of the present invention, an auxiliary wheel 8 is installed at the end of the sliding rod 7, and the auxiliary wheel 8 is in active contact with the track plate 9. The surface of the track plate 9 is provided with concave and convex features, and the concave and convex positions are set relative to the height of the electrical components. refer to Figure 4 By using the uneven surface of the track plate 9, the distance between the electrical components and the airflow plate 5 can be determined, thereby controlling the spacing between the airflow plate 5 and the electrical components to prevent the spacing from being too far or too close, which would affect the speed of gas flow.

[0024] As a preferred embodiment of the present invention, the bottom of the cabinet 1 is provided with a collection box 13 for collecting dust from the surface of the dust collection plate 6, and a cleaning component for cleaning the dust collection plate 6 is provided inside the collection box 13. refer to Figure 3 This facilitates the collection of dust adsorbed on the dust collection plate 6, thereby preventing excessive dust accumulation on the dust collection plate 6, which would affect its collection effect. At the same time, it reduces manual cleaning and improves the cleaning efficiency of the equipment.

[0025] As a preferred embodiment of the present invention, the cleaning component includes a first gear 11 installed on one side of the dust collection plate 6, a rack 12 fixedly disposed in the collection box 13 and movably meshing with the dust collection plate 6, and a scraper 15 for cleaning the dust collection plate 6 slidably disposed in the collection box 13. refer to Figure 3 and 5 When the first gear 11 and rack 12 mesh, the first threaded rod 3 continuously drives the fixed frame 4 to descend, so the rack 12 drives the first gear 11 to rotate. When the first gear 11 rotates, it drives the dust collection plate 6 to flip, thus flipping the side with non-woven fabric to the lower side, and at the same time contacting the scraper 15 in the collection box 13. Since the inlet of the collection box 13 and the diameter of the dust collection plate 6 are the same, and the side wall of the collection box 13 is provided with a flexible friction pad, when the first gear 11 drives the dust collection plate 6 to flip, the dust collection plate 6 will be stuck in the collection box 13, and the scraper 15 will move to clean it. When the scraper 15 cleans the dust collection plate 6, the first threaded rod 3 stops rotating. After the scraper 15 finishes cleaning, the dust collection plate 6 will be moved out of the collection box 13 again, and through the cooperation of the first gear 11 and rack 12, the dust collection plate 6 will be reset again, so as to perform the next cleaning.

[0026] As a preferred embodiment of the present invention, the drive assembly is disposed on the cabinet 1 and is used to drive the movement of the fixing frame 4 and the scraper 15. It includes a second threaded rod 14 rotatably disposed in the collection box 13, the scraper 15 being threadedly connected to the second threaded rod 14, a second gear 16 being mounted on the first threaded rod 3, a gearbox 17 being disposed at the end of the second threaded rod 14, and a third gear 18 being disposed at the input end of the gearbox 17. A drive motor 19 is mounted on the cabinet 1, and two half gears 20 being mounted at the output end of the drive motor 19, which mesh with the second gear 16 and the third gear 18 respectively. The teeth of the two half gears 20 are staggered. refer to Figure 7The drive motor 19 drives two half-gears 20 to rotate. Therefore, the teeth of the half-gears 20 are misaligned. So when the half-gear 20 meshes with the second gear 16 and drives the first threaded rod 3 to rotate, the other half-gear 20 separates from the third gear 18. At this time, the first threaded rod 3 can drive the fixed frame 4, the airflow plate 5 and the dust collection plate 6 to move. When the dust collection plate 6 flips and is located in the collection box 13, the half-gear 20 disengages from the second gear 16, and the other half-gear 20 drives the third gear 18 to rotate. At this time, the third gear 18 drives the scraper 15 to move through the second threaded rod 14, thereby realizing the cleaning of the dust collection plate 6 by the scraper 15. When the drive motor 19 rotates in the opposite direction, it can first drive the second threaded rod 14 to rotate in the opposite direction, and then drive the first threaded rod 3 to rotate in the opposite direction, so that the fixed frame 4 moves to the top surface of the cabinet 1, thereby preventing it from occupying too much space and affecting the use of its internal components.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outdoor photovoltaic grid-connected cabinet, comprising a cabinet body (1), a fan (2) mounted on the cabinet body (1), and a mounting frame (4) slidably mounted inside the cabinet body (1), characterized in that: Also includes: An airflow plate (5) is inclinedly mounted on a fixed frame (4) for cleaning the inside of the cabinet (1), and the airflow plate (5) is in communication with the fan (2); A dust collection plate (6) is set on the fixed frame (4) for dust collection. The dust collection plate (6) is set on the lower side of the airflow plate (5), and the airflow plate (5) and the dust collection plate (6) are set in a V shape. The end of the dust collection plate (6) is longer than the end of the airflow plate (5) and is used to receive the airflow generated by the fixed frame (4). The path assembly, located inside the cabinet (1), is used to adjust the distance of the airflow jet according to the height of the electrical components when driving the dust collection plate (6) and the airflow plate (5) to move. It includes a sliding rod (7) slidably mounted on the fixed frame (4) and a track plate (9) located inside the cabinet (1) and in active contact with the sliding rod (7). The dust collection plate (6) and the airflow plate (5) are located between the two sliding rods (7).

2. The outdoor photovoltaic grid-connected cabinet as described in claim 1, characterized in that: The moving component is set inside the cabinet (1) and is used to drive the fixed frame (4) to move. It includes rotating two first threaded rods (3) set inside the cabinet (1) and the two first threaded rods (3) are connected in a transmission manner. The fixed frame (4) is threadedly connected between the two first threaded rods (3).

3. The outdoor photovoltaic grid-connected cabinet as described in claim 2, characterized in that: The dust collection plate (6) is arc-shaped at one end near the track plate (9), and the surface of the dust collection plate (6) is covered with a damp non-woven fabric.

4. The outdoor photovoltaic grid-connected cabinet as described in claim 3, characterized in that: The airflow plate (5) has multiple air holes evenly distributed on the side near the dust collection plate (6), and the airflow plate (5) is set at an acute angle to the inner wall of the cabinet (1).

5. The outdoor photovoltaic grid-connected cabinet as described in claim 4, characterized in that: The path assembly also includes a movable plate (21) fixedly disposed between two sliding rods (7), the airflow plate (5) fixedly disposed on the movable plate (21), the dust collection plate (6) rotatably disposed on the movable plate (21), and a spring (10) for resetting the movable plate (21) sleeved on the sliding rod (7).

6. The outdoor photovoltaic grid-connected cabinet as described in claim 5, characterized in that: An auxiliary wheel (8) is installed at the end of the sliding rod (7), and the auxiliary wheel (8) is in contact with the track plate (9). The surface of the track plate (9) is concave and convex, and the concave and convex positions are set relative to the height of the electrical components.

7. The outdoor photovoltaic grid-connected cabinet as described in claim 6, characterized in that: The bottom of the cabinet (1) is provided with a collection box (13) for collecting dust on the surface of the dust collection plate (6), and a cleaning component for cleaning the dust collection plate (6) is provided inside the collection box (13).

8. The outdoor photovoltaic grid-connected cabinet as described in claim 7, characterized in that: The cleaning assembly includes a first gear (11) installed on one side of the dust collection plate (6), a rack (12) that meshes with the dust collection plate (6) is fixedly installed in the collection box (13), and a scraper (15) for cleaning the dust collection plate (6) is slidably installed in the collection box (13).

9. The outdoor photovoltaic grid-connected cabinet as described in claim 8, characterized in that: A drive assembly, mounted on the cabinet (1), is used to drive the movement of the fixing frame (4) and the scraper (15), including rotating a second threaded rod (14) mounted in the collection box (13). The scraper (15) is threadedly connected to the second threaded rod (14). A second gear (16) is mounted on the first threaded rod (3). A gearbox (17) is provided at the end of the second threaded rod (14), and a third gear (18) is provided at the input end of the gearbox (17). A drive motor (19) is mounted on the cabinet (1). Two half gears (20) are mounted at the output end of the drive motor (19) and mesh with the second gear (16) and the third gear (18) respectively. The teeth of the two half gears (20) are misaligned.

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