Ventilated dustproof low-voltage electrical control cabinet and use method

Abstract

The application discloses a low-voltage electrical control cabinet with ventilation and dust prevention and a use method, and belongs to the field of electrical control cabinets. The low-voltage electrical control cabinet comprises an electrical control cabinet body, a rain cover fixedly connected to the four corners of the top of the electrical control cabinet body, a heat dissipation assembly arranged on one side of the back of the electrical control cabinet body and used for quickly heat exchanging the electrical control cabinet body, and ventilation assemblies arranged on the two sides of the inside of the electrical control cabinet body and used for ventilation and heat exchange. The low-voltage electrical control cabinet can realize transmission of various components, drive the rack to move up and down in cycles, drive the first gear to rotate back and forth, drive the flow guide plate to reciprocatingly rotate in the inside of the air outlet, guide the airflow, improve the range of airflow blowing, ensure that all components in the inside of the electrical control cabinet body can be heat exchanged, avoid accumulation of local heat, and reduce dust adhesion to a certain extent during blowing.

Description

Technical Field

[0001] This invention relates to the field of electrical control cabinets, and more specifically, to a ventilated and dustproof low-voltage electrical control cabinet and its usage method. Background Technology

[0002] An electrical control cabinet is a set of switchgear, measuring instruments, protective devices, and auxiliary equipment assembled in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, facilitate maintenance, and not endanger personnel or surrounding equipment. During normal operation, circuits can be connected or disconnected manually or automatically. In case of faults or abnormal operation, protective devices can cut off the circuit or trigger an alarm. Measuring instruments can display various operating parameters and allow adjustment of certain electrical parameters. It can also provide alerts or signals for deviations from normal operating conditions. It is commonly used in power generation, distribution, and substations.

[0003] Traditional intelligent low-voltage electrical control cabinets can basically meet people's needs, but they still have shortcomings: when used for a long time, the temperature inside the electrical control cabinet is prone to gradually rising, and it is unable to automatically dissipate heat from the inside of the electrical control cabinet.

[0004] To address the aforementioned technical problems, Chinese Patent Application No. CN115296163A discloses an intelligent low-voltage electrical control cabinet device with semiconductor cooling. This device improves the heat dissipation effect inside the control cabinet by using semiconductor cooling chips, thus avoiding the problem of the internal temperature of the electrical control cabinet gradually rising without being able to dissipate heat automatically. However, after the airflow is blown into the electrical cabinet, it flows in a straight line at a fixed position, which means that the airflow can only effectively dissipate heat to the components in the direction it is blowing, while the areas not covered by the airflow cannot be well dissipated. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a low-voltage electrical control cabinet with ventilation and dust prevention and a method of using it.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A low-voltage electrical control cabinet with ventilation and dust prevention includes an electrical control cabinet body, with rain covers fixedly connected to the four corners of the top of the electrical control cabinet body, a heat dissipation component for rapid heat exchange of the electrical control cabinet body on one side of the back of the electrical control cabinet body, and ventilation components for ventilation and heat exchange on both sides inside the electrical control cabinet body. The ventilation assembly includes air distribution chambers fixed to both sides inside the electrical control cabinet body, air inlet pipes fixed to the bottom of both sides of the electrical control cabinet body, and a dustproof assembly fixed to the top of the electrical control cabinet body. The air distribution chambers have multiple air outlets inside. A dual-axis motor is fixedly connected to the inner wall of the air inlet pipe. A cooling impeller is fixedly connected to the output shaft of the dual-axis motor. A dustproof net is fixedly connected to the bottom of the air inlet pipe. A ventilation mesh cylinder is provided on the dustproof assembly. A flow guide assembly is provided on one side inside the air distribution chamber.

[0008] Furthermore, the airflow guiding assembly includes a first bevel gear fixed to the other end of the dual-axis motor, a worm gear rotatably disposed inside the air intake pipe, and airflow guiding plates rotatably connected to both sides inside the air outlet. A second bevel gear is fixedly connected to the bottom of the worm gear. A first movable frame is slidably connected to one side of the air distribution chamber. A rack is fixedly connected to the edge of the first movable frame near the airflow guiding plate. A drive shaft is rotatably connected to the other side of the air distribution chamber. A worm gear is fixedly connected to one end of the outer surface of the drive shaft. A disc is fixedly connected to one side of the drive shaft. A first drive shaft is fixedly connected to one side of the disc. A first gear is fixedly connected to one side of the airflow guiding plate.

[0009] Furthermore, the interior of the air distribution chamber is interconnected with the interior of the air intake pipe. The first bevel gear and the second bevel gear mesh with each other. One side of the drive shaft extends out of the interior of the air distribution chamber. The worm gear and the worm wheel mesh with each other. One side of the first drive shaft extends into the interior of the first moving frame and slides against each other. A gear groove with the same number of air outlets is opened on one side of the interior of the air distribution chamber. The first gear is located inside the gear groove. The first gear meshes with the rack. The two ends of the guide plate are rounded and chamfered to facilitate the rotation of the guide plate inside the air outlet.

[0010] Furthermore, the dustproof component includes a mounting plate fixed to the top of the electrical control cabinet body. Guide rails are fixedly connected to the front and rear sides of the bottom of the mounting plate. Two connecting sliders are slidably connected inside the guide rails. A protective cover is fixedly connected between the two connecting sliders. The ventilation mesh is fixed in the middle of the bottom of the mounting plate. The top of the ventilation mesh extends out of the electrical control cabinet body. The ventilation mesh is located between the two protective covers.

[0011] Furthermore, the heat dissipation assembly includes water tanks fixed to the top of both sides of the electrical control cabinet body, support rails fixed to the top and bottom of one side of the back of the electrical control cabinet body, and a wiping assembly located in the middle of one side of the back of the electrical control cabinet body. A support slide rod is slidably connected inside the support rails, and a moving rod is slidably connected to the outer surface of the support slide rods. A wiping cotton is fixedly connected to one side of the moving rod, and a spring is sleeved on the outer surface of the support slide rod. A water inlet frame is fixedly connected to the top of the water tank, and a telescopic guide hose is fixedly connected to the middle of the bottom of the water tank. A water inlet groove is opened at the bottom of the water inlet frame, and a floating plate is provided at the bottom of the water tank. A guide cavity is opened at the top of the moving rod, and a water outlet is opened at the top of one side of the guide cavity.

[0012] Furthermore, the water inlet tank is equipped with a filter screen, and the floating plate has slots on both sides and ends to facilitate water flow and reduce friction between the sides of the floating plate and the inside of the water storage tank.

[0013] Furthermore, the other end of the telescopic flow guiding hose is fixedly connected to one side of the moving rod. The interior of the telescopic flow guiding hose, the interior of the flow guiding cavity, and the interior of the water storage tank are all interconnected. A limit plate is provided on one side of the support slide rod. The spring is located between the support slide rod and the moving rod. The spring is in a compressed state, so that the wiping cotton is in contact with the outer wall of the back of the electrical control cabinet body.

[0014] Furthermore, the wiping assembly includes a U-shaped frame fixed to the middle of one side of the back of the electrical control cabinet body, a second movable frame fixed to one side of the back of the movable rod, and a temperature sensor fixed inside the rear of the electrical control cabinet body. A drive motor is fixedly connected to one side of the U-shaped frame, and a motor shaft is fixedly connected to the output end of the drive motor. A ring is fixedly connected to one side of the motor shaft, and a second drive shaft is fixedly connected to one side of the ring. One side of the second drive shaft extends into the interior of the second movable frame and slides to fit against it. An intermittent opening and closing assembly is provided on the front side of the U-shaped frame.

[0015] Furthermore, the intermittent opening and closing assembly includes a first reduction gear fixed to the outer surface of the motor shaft, a second reduction gear and a fourth reduction gear rotating sequentially on the front side of the U-shaped frame, and a solenoid valve switch fixed to the top rear side of the U-shaped frame. One end of the telescopic flow guide hose is equipped with a solenoid valve, which connects the telescopic flow guide hose to the interior of the flow guide cavity. A third reduction gear is fixedly connected to the front side of the second reduction gear, and a cam is fixedly connected to the rear side of the fourth reduction gear. The first and second reduction gears mesh with each other, and the third and fourth reduction gears mesh with each other. The pitch circle diameter of the second reduction gear is an integer multiple of the pitch circle diameter of the first reduction gear, and the pitch circle diameter of the fourth reduction gear is an integer multiple of the pitch circle diameter of the third reduction gear. The cam is located below the solenoid valve switch, which is a micro-motion contact switch and is electrically connected to the solenoid valve.

[0016] A method for using a ventilated and dustproof low-voltage electrical control cabinet includes the following steps: S1: The dual-shaft motor drives the cooling impeller to send outside air into the air distribution chamber through the air inlet pipe, and blow it out from the air outlet to take away the heat inside the electrical control cabinet; at the same time, through the bevel gear and worm gear transmission, the guide plate is driven to deflect back and forth to adjust the air direction, expand the heat dissipation and blowing range, and the hot air is discharged through the ventilation screen.

[0017] S2: Before cleaning the ventilation screen, push the protective cover along the guide rail to close and wrap the screen, then remove the mounting plate. The dust is sealed inside the protective cover to prevent dust from polluting electrical components or being inhaled by personnel.

[0018] S3: Rainwater flows through the rain cover and water inlet frame into the water storage tank. The water inlet trough filters impurities, and the floating plate reduces water evaporation. The water in the tank is then used to wet the wiping cotton through the telescopic guide hose, and the cabinet temperature is reduced by water evaporation.

[0019] S4: After the temperature sensor detects that the temperature inside the cabinet exceeds the threshold, the drive motor drives the wiping cotton to swing back and forth. The spring ensures that the wiping cotton is in close contact with the cabinet, increasing the contact area and improving the evaporative cooling efficiency.

[0020] S5: After the motor shaft is reduced in multiple stages by the first reduction gear to the fourth reduction gear, it drives the cam to intermittently press the solenoid valve switch, periodically opening and closing the solenoid valve, intermittently supplying water to the wiping cotton, preventing rainwater from being lost quickly and improving water resource utilization.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This solution uses a flow guiding component to drive the rack to move up and down in a circular motion through the transmission of each component. This drives the first gear to rotate back and forth, causing the flow guide plate to rotate repeatedly inside the air outlet. This guides the airflow, expands the range of airflow, ensures that all components inside the electrical control cabinet can be cooled, avoids local heat accumulation, and reduces dust adhesion to a certain extent during purging.

[0022] 2. This solution uses a dustproof component to bring two protective covers close together, sealing the ventilation screen inside the space formed by the two protective covers. Then, the mounting plate is disassembled as a whole. During the process, dust on the surface of the ventilation screen will fall into the inside of the protective cover, which will block the dust and prevent it from falling on the components. It also ensures that the staff will not inhale dust during disassembly.

[0023] 3. This solution, by setting up a heat dissipation component, can transport rainwater from inside the water storage tank to the inside of the wiping cotton, causing the wiping cotton to swing back and forth, increasing the contact area between the wiping cotton and the surface of the electrical control cabinet, improving heat exchange efficiency. In addition, the spring continuously applies a certain pressure to the moving rod, ensuring that the wiping cotton always adheres to the surface of the electrical control cabinet, further improving cooling efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the ventilation component structure of the present invention; Figure 3 This is a schematic diagram of the intake pipe structure of the present invention; Figure 4 This is a schematic diagram of the dustproof component structure of the present invention; Figure 5 This is a schematic diagram of the heat dissipation component structure of the present invention; Figure 6 This is a schematic diagram of the water storage tank structure of the present invention; Figure 7 This is a schematic diagram of the wiping component structure of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the wiping component structure of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the intermittent opening and closing component structure of the present invention. Figure 1 ; Figure 10 This is a schematic diagram of the intermittent opening and closing component structure of the present invention. Figure 2 .

[0025] Explanation of the labels in the diagram: 1. Electrical control cabinet body; 2. Rain cover; 3. Ventilation components; 31. Air distribution chamber; 32. Air outlet; 33. Air inlet pipe; 34. Dust filter; 35. Heat dissipation impeller; 36. Dual-shaft motor; 37. Flow guide assembly; 371. First bevel gear; 372. Worm gear; 373. Second bevel gear; 374. Worm wheel; 375. Drive shaft; 376. Disc; 377. Rack; 378. First gear; 379. Flow guide plate; 3710. First moving frame; 3711. First drive shaft; 38. Dustproof components; 381. Mounting plate; 382. Guide rail; 383. Connecting slider; 384. Protective cover; 39. Ventilation mesh tube; 4. Heat dissipation components; 41. Water storage tank; 42. Water inlet frame; 43. Telescopic flow guide hose; 44. Moving rod; 45. Wiping cotton; 46. Flow guide cavity; 47. Water outlet; 48. Wiping assembly; 481. Drive motor; 482. Ring; 483. Second drive shaft; 484. Motor shaft; 485. U-shaped frame; 486. Second moving frame; 487. Temperature sensor; 49. Intermittent opening and closing assembly; 491. First reduction gear; 492. Second reduction gear; 493. Third reduction gear; 494. Fourth reduction gear; 495. Solenoid valve switch; 496. Cam; 497. Solenoid valve; 410. Support rail; 411. Support slide bar; 412. Spring; 413. Float plate; 414. Water inlet tank. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1 to 10 A low-voltage electrical control cabinet with ventilation and dust prevention includes an electrical control cabinet body 1, rain covers 2 are fixedly connected to the four corners of the top of the electrical control cabinet body 1, a heat dissipation component 4 for rapid heat exchange of the electrical control cabinet body 1 is provided on one side of the back of the electrical control cabinet body 1, and ventilation components 3 for ventilation and heat exchange are provided on both sides inside the electrical control cabinet body 1. like Figures 2-3As shown, the ventilation assembly 3 includes an air distribution chamber 31 fixed on both sides inside the electrical control cabinet body 1, an air inlet pipe 33 fixed on the bottom of both sides of the electrical control cabinet body 1, and a dustproof assembly 38 fixed on the top inside the electrical control cabinet body 1. The air distribution chamber 31 has multiple air outlets 32. A dual-axis motor 36 is fixedly connected to the inner wall of the air inlet pipe 33. A heat dissipation impeller 35 is fixedly connected to the output shaft of the dual-axis motor 36. A dustproof net 34 is fixedly connected to the bottom of the air inlet pipe 33. A ventilation net cylinder 39 is provided on the dustproof assembly 38. A flow guide assembly 37 is provided on one side inside the air distribution chamber 31.

[0028] like Figures 2-3 As shown, the airflow guiding assembly 37 includes a first bevel gear 371 fixed to the other end of the dual-axis motor 36, a worm gear 372 rotatably disposed inside the air intake pipe 33, and airflow guiding plates 379 rotatably connected to both sides inside the air outlet 32. The bottom of the worm gear 372 is fixedly connected to a second bevel gear 373. A first moving frame 3710 is slidably connected to one side inside the air distribution chamber 31. A rack 377 is fixedly connected to the edge of the first moving frame 3710 near the airflow guiding plate 379. A drive shaft 375 is rotatably connected to the other side inside the air distribution chamber 31. A worm gear 374 is fixedly connected to one end of the outer surface of the drive shaft 375. A disc 376 is fixedly connected to one side of the drive shaft 375. A first drive shaft 3711 is fixedly connected to one side of the disc 376. A first gear 378 is fixedly connected to one side of the airflow guiding plate 379.

[0029] The interior of the air distribution chamber 31 is connected to the interior of the air intake pipe 33. The first bevel gear 371 and the second bevel gear 373 mesh with each other. One side of the drive shaft 375 extends out of the interior of the air distribution chamber 31. The worm gear 372 and the worm wheel 374 mesh with each other. One side of the first drive shaft 3711 extends into the interior of the first moving frame 3710 and slides against each other. One side of the interior of the air distribution chamber 31 has a number of gear slots that are the same as the number of air outlets 32. The first gear 378 is located inside the gear slots. The first gear 378 meshes with the rack 377. The two ends of the guide plate 379 are rounded and chamfered to facilitate the rotation of the guide plate 379 inside the air outlet 32.

[0030] When ventilating the interior of the electrical control cabinet body 1, the dual-axis motor 36 is started to drive the cooling impeller 35 to rotate. The cooling impeller 35 delivers external airflow to the interior of the air distribution chamber 31 through the air inlet pipe 33, and sprays it out through multiple air outlets 32 inside the air distribution chamber 31. The airflow transfers the heat inside the electrical control cabinet body 1 to the outside through the ventilation mesh 39, thereby cooling the interior of the electrical control cabinet body 1. The dual-axis motor 36 synchronously drives the first bevel gear 371 to rotate, and drives the worm gear 372 to rotate through the second bevel gear 373. The worm gear 374 drives the transmission shaft 375 and the disc 376 synchronously. The transmission shaft 375 rotates, driving the first drive shaft 3711 to make a circular motion, pushing the first moving frame 3710 to slide up and down inside the air distribution chamber 31. The first drive shaft 3711 moves left and right back and forth inside the first moving frame 3710, thereby driving the rack 377 to move up and down back and forth, driving the first gear 378 to rotate back and forth, driving the guide plate 379 to rotate back and forth inside the air outlet 32, guiding the airflow, increasing the range of airflow purging, ensuring that all components inside the electrical control cabinet body 1 can be heat exchanged, avoiding local heat accumulation, and reducing dust adhesion to a certain extent during purging.

[0031] like Figure 4 As shown, the dustproof component 38 includes a mounting plate 381 fixed to the top of the electrical control cabinet body 1. Guide rails 382 are fixedly connected to the front and rear sides of the bottom of the mounting plate 381. Two connecting sliders 383 are slidably connected inside the guide rails 382. A protective cover 384 is fixedly connected between the two connecting sliders 383. A ventilation screen 39 is fixed in the middle of the bottom of the mounting plate 381. The top of the ventilation screen 39 extends out of the electrical control cabinet body 1. The ventilation screen 39 is located between the two protective covers 384.

[0032] When airflow enters the electrical control cabinet body 1 through the air inlet pipe 33 and then flows to the outside of the electrical control cabinet body 1 through the ventilation screen 39, dust inside the electrical control cabinet body 1 will accumulate on the filter screen of the ventilation screen 39, resulting in poor ventilation. The ventilation screen 39 needs to be disassembled and cleaned promptly. However, during the disassembly and replacement process, dust from the surface of the ventilation screen 39 may fall onto switch components. Therefore, when disassembling the ventilation screen 39, the two protective covers 384 are pushed closer together, causing the connecting slider 383 to slide inside the guide rail 382, ​​bringing the two protective covers 384 into contact and sealing the ventilation screen 39 within the space formed by the two protective covers 384. Then, the mounting plate 381 is disassembled as a whole. During this process, dust from the surface of the ventilation screen 39 will fall into the inside of the protective covers 384, which block the dust, preventing it from falling onto components and ensuring that personnel do not inhale dust during disassembly.

[0033] like Figures 5-7 As shown, the heat dissipation assembly 4 includes a water tank 41 fixed to the top of both sides of the electrical control cabinet body 1, a support rail 410 fixed to the top and bottom of one side of the back of the electrical control cabinet body 1, and a wiping assembly 48 located in the middle of one side of the back of the electrical control cabinet body 1. A support slide rod 411 is slidably connected inside the support rail 410, and a moving rod 44 is slidably connected to the outer surface of the support slide rod 411. A wiping cotton 45 is fixedly connected to one side of the moving rod 44, and a spring 412 is sleeved on the outer surface of the support slide rod 411. A water inlet frame 42 is fixedly connected to the top of the water tank 41, and a telescopic guide hose 43 is fixedly connected to the middle of the bottom of the water tank 41. A water inlet groove 414 is opened at the bottom of the water inlet frame 42, and a float plate 413 is set at the bottom of the water tank 41. A guide cavity 46 is opened at the top of the moving rod 44, and a water outlet hole 47 is opened at the top of one side of the guide cavity 46.

[0034] The water inlet tank 414 is equipped with a filter screen, and the float plate 413 has slots on both sides and both ends to facilitate water flow and reduce the friction between the sides of the float plate 413 and the inside of the water storage tank 41.

[0035] The other end of the telescopic flow guide hose 43 is fixedly connected to one side of the moving rod 44. The interior of the telescopic flow guide hose 43, the interior of the flow guide cavity 46, and the interior of the water storage tank 41 are all interconnected. A limit plate is provided on one side of the support slide rod 411. The spring 412 is located between the support slide rod 411 and the moving rod 44. The spring 412 is in a compressed state, so that the wiping cotton 45 is in contact with the outer wall of the back of the electrical control cabinet body 1.

[0036] In hot environments, the overall temperature of the electrical cabinet is high. Water inside the water storage tank 41 flows into the guide cavity 46 through the telescopic guide hose 43. When the guide cavity 46 is full, water flows into the wiping cotton 45 through the water outlet 47, wetting the wiping cotton 45. The wet wiping cotton 45 adheres to the surface of the electrical control cabinet body 1, and the moisture continues to evaporate and absorb heat, which can effectively reduce the outer shell temperature of the electrical control cabinet body 1, causing a slight decrease in the core temperature rise of heat-generating components such as air, circuit breakers, and frequency converters inside the cabinet. On rainy days, water flows into the water inlet frame 42 through the rain cover 2, and then into the water storage tank 41 for collection. The water inlet trough 414 can effectively filter out impurities, preventing them from entering the water storage tank 41. At the same time, the float plate 413 will move upward as the water level rises, which can effectively reduce the evaporation efficiency of rainwater inside the water storage tank 41.

[0037] like Figures 7-8As shown, the wiping assembly 48 includes a U-shaped frame 485 fixed to the middle of one side of the back of the electrical control cabinet body 1, a second moving frame 486 fixed to one side of the back of the moving rod 44, and a temperature sensor 487 fixed inside the rear side of the electrical control cabinet body 1. A drive motor 481 is fixedly connected to one side of the U-shaped frame 485. A motor shaft 484 is fixedly connected to the output end of the drive motor 481. A ring 482 is fixedly connected to one side of the motor shaft 484. A second drive shaft 483 is fixedly connected to one side of the ring 482. One side of the second drive shaft 483 extends into the interior of the second moving frame 486 and slides and adapts to each other. An intermittent opening and closing assembly 49 is provided on the front side of the U-shaped frame 485.

[0038] However, the contact area between the wiping cotton 45 and the surface of the electrical control cabinet body 1 is limited, and the area for evaporative heat absorption is also limited. Therefore, it is necessary to increase the contact area between the wiping cotton 45 and the electrical control cabinet body 1. The internal temperature of the electrical control cabinet body 1 is detected in real time by the temperature sensor 487. When the temperature exceeds the set threshold, the drive motor 481 is started to drive the motor shaft 484 to rotate. The motor shaft 484 drives the second drive shaft 483 to rotate through the ring 482. The second drive shaft 483 drives the second moving frame 486 to swing left and right in a circular motion, causing the moving rod 44 and the wiping cotton 45 to swing back and forth, thereby increasing the contact area between the wiping cotton 45 and the surface of the electrical control cabinet body 1 and improving the heat exchange efficiency. In addition, the spring 412 continuously applies a certain pressure to the moving rod 44, so that the wiping cotton 45 always adheres to the surface of the electrical control cabinet body 1, further improving the cooling efficiency.

[0039] like Figures 9-10 As shown, the intermittent opening and closing assembly 49 includes a first reduction gear 491 fixed to the outer surface of the motor shaft 484, a second reduction gear 492 and a fourth reduction gear 494 rotating sequentially on the front side of the U-shaped frame 485, and a solenoid valve switch 495 fixed to the top of the rear side of the U-shaped frame 485. A solenoid valve 497 is provided at one end of the telescopic flow guide hose 43, connecting the telescopic flow guide hose 43 to the interior of the flow guide cavity 46. A third reduction gear 493 and a fourth reduction gear 494 are fixedly connected to the front side of the second reduction gear 492. A cam 496 is fixedly connected to the rear side. The first reduction gear 491 and the second reduction gear 492 mesh with each other, and the third reduction gear 493 and the fourth reduction gear 494 mesh with each other. The pitch circle diameter of the second reduction gear 492 is an integer multiple of the pitch circle diameter of the first reduction gear 491, and the pitch circle diameter of the fourth reduction gear 494 is an integer multiple of the pitch circle diameter of the third reduction gear 493. The cam 496 is located below the solenoid valve switch 495. The solenoid valve switch 495 is a micro-contact switch and is electrically connected to the solenoid valve 497.

[0040] During the cooling process, the water inside the water storage tank 41 continuously flows into the guide cavity 46, causing the rainwater inside the water storage tank 41 to drain away quickly. This means most of the rainwater doesn't have time to exchange heat before flowing away. Therefore, when the motor shaft 484 rotates, it drives the first reduction gear 491 to rotate synchronously, which in turn drives the second reduction gear 492 and the third reduction gear 493 to rotate the fourth reduction gear 494. Through the reduction of multiple gears, the fourth reduction gear can rotate more than once the motor shaft 484 has rotated several times. When the speed gear 494 rotates once, the farthest end of the cam 496 presses the solenoid valve switch 495, opening the solenoid valve 497 and opening the passage between the telescopic guide hose 43 and the guide cavity 46. This allows water to smoothly enter the guide cavity and moisten the wiping cotton 45, ensuring continuous moisture inside the wiping cotton 45 and preventing water from flowing out too quickly. This improves the utilization rate of rainwater inside the water storage tank 41. When the farthest end of the cam 496 moves away from the solenoid valve switch 495, the solenoid valve switch 495 resets and closes the solenoid valve 497.

[0041] A method for using a ventilated and dustproof low-voltage electrical control cabinet includes the following steps: S1: The dual-shaft motor 36 drives the heat dissipation impeller 35 to send outside air into the air distribution chamber 31 through the air inlet pipe 33, and blow it out from the air outlet 32 ​​to take away the heat inside the electrical control cabinet body 1; at the same time, through the bevel gear and worm gear transmission, the guide plate 379 is driven to reciprocate to adjust the air direction, expand the heat dissipation and blowing range, and the hot air is discharged through the ventilation screen 39.

[0042] S2: Before cleaning the ventilation screen 39, push the protective cover 384 along the guide rail 382 to close and wrap the screen, and then remove the mounting plate 381. The dust is sealed inside the protective cover 384 to prevent dust from polluting electrical components or being inhaled by personnel.

[0043] S3: Rainwater flows into the water storage tank 41 through the rain cover 2 and the water inlet frame 42. The water inlet trough 414 filters impurities, and the floating plate 413 reduces water evaporation. The water in the tank is soaked in the wiping cotton 45 through the telescopic guide hose 43, and the cabinet temperature is reduced by water evaporation.

[0044] S4: After the temperature sensor 487 detects that the temperature inside the cabinet exceeds the threshold, the drive motor 481 drives the wiping cotton 45 to swing back and forth. The spring 412 ensures that the wiping cotton 45 is in close contact with the cabinet, increasing the contact area and improving the evaporative cooling efficiency.

[0045] S5: The motor shaft 484 drives the cam 496 to intermittently press the solenoid valve switch 495 after multiple reduction stages from the first reduction gear 491 to the fourth reduction gear 494. This periodically opens and closes the solenoid valve 497, intermittently supplying water to the wiping cotton 45, preventing rainwater from being lost quickly and improving water resource utilization.

[0046] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A ventilated and dustproof low-voltage electrical control cabinet, comprising an electrical control cabinet body (1), wherein rain covers (2) are fixedly connected to the four corners of the top of the electrical control cabinet body (1), characterized in that: The electrical control cabinet body (1) has a heat dissipation component (4) on one side of the back side for rapid heat exchange of the electrical control cabinet body (1), and ventilation components (3) for ventilation and heat exchange are provided on both sides inside the electrical control cabinet body (1). The ventilation assembly (3) includes an air distribution chamber (31) fixed on both sides inside the electrical control cabinet body (1), an air inlet pipe (33) fixed on the bottom of both sides of the electrical control cabinet body (1), and a dustproof assembly (38) fixed on the top inside the electrical control cabinet body (1). The air distribution chamber (31) has multiple air outlets (32) inside. A dual-axis motor (36) is fixedly connected to the inner wall of the air inlet pipe (33). A heat dissipation impeller (35) is fixedly connected to the output shaft of the dual-axis motor (36). A dustproof net (34) is fixedly connected to the bottom of the air inlet pipe (33). A ventilation net cylinder (39) is provided on the dustproof assembly (38). A flow guide assembly (37) is provided on one side inside the air distribution chamber (31).

2. The low-voltage electrical control cabinet with ventilation and dust prevention according to claim 1, characterized in that: The airflow guiding assembly (37) includes a first bevel gear (371) fixed to the other end of the dual-axis motor (36), a worm gear (372) rotatably disposed inside the air intake pipe (33), and airflow guide plates (379) rotatably connected to both sides inside the air outlet (32). The bottom of the worm gear (372) is fixedly connected to the second bevel gear (373). A first movable frame (3710) is slidably connected to one side inside the air distribution chamber (31). The first movable frame (3710) is close to the airflow guide plate. A rack (377) is fixedly connected to one edge of the air distribution chamber (31), and a drive shaft (375) is rotatably connected to the other side of the air distribution chamber (31). A worm gear (374) is fixedly connected to one end of the outer surface of the drive shaft (375). A disc (376) is fixedly connected to one side of the drive shaft (375). A first drive shaft (3711) is fixedly connected to one side of the disc (376). A first gear (378) is fixedly connected to one side of the guide plate (379).

3. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 2, characterized in that: The interior of the air distribution chamber (31) is connected to the interior of the air inlet pipe (33). The first bevel gear (371) and the second bevel gear (373) mesh with each other. One side of the drive shaft (375) extends out of the interior of the air distribution chamber (31). The worm (372) meshes with the worm wheel (374). One side of the first drive shaft (3711) extends into the interior of the first moving frame (3710) and slides against each other. One side of the interior of the air distribution chamber (31) has a gear groove with the same number as the air outlet (32). The first gear (378) is located inside the gear groove. The first gear (378) meshes with the rack (377). The two ends of the guide plate (379) are rounded and chamfered to facilitate the rotation of the guide plate (379) inside the air outlet (32).

4. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 3, characterized in that: The dustproof component (38) includes a mounting plate (381) fixed inside the top of the electrical control cabinet body (1). The bottom front and rear sides of the mounting plate (381) are fixedly connected to guide rails (382). The guide rails (382) are slidably connected to two connecting sliders (383). A protective cover (384) is fixedly connected between the two connecting sliders (383). The ventilation screen (39) is fixed in the middle of the bottom of the mounting plate (381). The top of the ventilation screen (39) extends out of the electrical control cabinet body (1). The ventilation screen (39) is located between the two protective covers (384).

5. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 1, characterized in that: The heat dissipation assembly (4) includes a water tank (41) fixed to the top of both sides of the electrical control cabinet body (1), a support rail (410) fixed to the top and bottom of one side of the back of the electrical control cabinet body (1), and a wiping assembly (48) located in the middle of one side of the back of the electrical control cabinet body (1). A support slide rod (411) is slidably connected inside the support rail (410), and a moving rod (44) is slidably connected to the outer surface of the support slide rod (411). A wiping cotton (45) is fixedly connected to one side of the moving rod (44). The outer surface of the support slide rod (411) is fitted with a spring (412), the top of the water storage tank (41) is fixedly connected with a water inlet frame (42), the middle of the bottom of the water storage tank (41) is fixedly connected with a telescopic guide hose (43), the bottom of the water inlet frame (42) is provided with a water inlet groove (414), the bottom of the water storage tank (41) is provided with a floating plate (413), the top of the moving rod (44) is provided with a guide cavity (46), and the top of one side of the guide cavity (46) is provided with a water outlet hole (47).

6. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 5, characterized in that: The water inlet trough (414) is equipped with a filter screen, and the floating plate (413) has slots on both sides and both ends to facilitate water flow and reduce the friction between the side of the floating plate (413) and the inside of the water storage tank (41).

7. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 6, characterized in that: The other end of the telescopic flow guide hose (43) is fixedly connected to one side of the moving rod (44). The interior of the telescopic flow guide hose (43), the interior of the flow guide cavity (46), and the interior of the water storage tank (41) are all interconnected. A limit plate is provided on one side of the support slide rod (411). The spring (412) is located between the support slide rod (411) and the moving rod (44). The spring (412) is in a compressed state, so that the wiping cotton (45) is in contact with the outer wall of the back of the electrical control cabinet body (1).

8. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 7, characterized in that: The wiping assembly (48) includes a U-shaped frame (485) fixed at the middle of one side of the back of the electrical control cabinet body (1), a second moving frame (486) fixed at one side of the back of the moving rod (44), and a temperature sensor (487) fixed inside the rear side of the electrical control cabinet body (1). A drive motor (481) is fixedly connected to one side of the U-shaped frame (485), and a motor shaft (484) is fixedly connected to the output end of the drive motor (481). A ring (482) is fixedly connected to one side of the motor shaft (484), and a second drive shaft (483) is fixedly connected to one side of the ring (482). One side of the second drive shaft (483) extends into the interior of the second moving frame (486) and slides and adapts to each other. An intermittent opening and closing assembly (49) is provided on the front side of the U-shaped frame (485).

9. A low-voltage electrical control cabinet with ventilation and dust prevention according to claim 8, characterized in that: The intermittent opening and closing assembly (49) includes a first reduction gear (491) fixed to the outer surface of the motor shaft (484), a second reduction gear (492) and a fourth reduction gear (494) rotating sequentially on the front side of the U-shaped frame (485), and a solenoid valve switch (495) fixed to the top rear side of the U-shaped frame (485). A solenoid valve (497) is provided at one end of the telescopic flow guide hose (43), connecting the telescopic flow guide hose (43) to the interior of the flow guide cavity (46). A third reduction gear (493) is fixedly connected to the front side of the second reduction gear (492), and the fourth reduction gear (494)... A cam (496) is fixedly connected to the rear side of the device. The first reduction gear (491) and the second reduction gear (492) mesh with each other. The third reduction gear (493) and the fourth reduction gear (494) mesh with each other. The pitch circle diameter of the second reduction gear (492) is an integer multiple of the pitch circle diameter of the first reduction gear (491). The pitch circle diameter of the fourth reduction gear (494) is an integer multiple of the pitch circle diameter of the third reduction gear (493). The cam (496) is located below the solenoid valve switch (495). The solenoid valve switch (495) is a micro-motion contact switch and is electrically connected to the solenoid valve (497).

10. A method of using the ventilated and dustproof low-voltage electrical control cabinet according to any one of claims 1-9, characterized in that, Includes the following steps: S1: The dual-axis motor (36) drives the heat dissipation impeller (35) to send outside air into the air distribution chamber (31) through the air inlet pipe (33), and blow it out from the air outlet (32) to take away the heat inside the electrical control cabinet body (1); at the same time, through the bevel gear and worm gear transmission, the guide plate (379) is driven to deflect back and forth to adjust the air direction, expand the heat dissipation and blowing range, and the hot air flow is discharged through the ventilation screen (39). S2: Before cleaning the ventilation screen (39), push the protective cover (384) along the guide rail (382) to close and wrap the screen, and then remove the mounting plate (381). The dust is sealed inside the protective cover (384) to prevent dust from polluting electrical components and being inhaled by personnel. S3: Rainwater flows into the water storage tank (41) through the rain cover (2) and the water inlet frame (42). The water inlet trough (414) filters impurities, and the floating plate (413) reduces water evaporation. The water in the tank is soaked in the wiping cotton (45) through the telescopic guide hose (43), and the cabinet temperature is reduced by water evaporation. S4: After the temperature sensor (487) detects that the temperature inside the cabinet exceeds the threshold, the drive motor (481) drives the wiping cotton (45) to swing back and forth. The spring (412) ensures that the wiping cotton (45) is in close contact with the cabinet, increasing the contact area and improving the evaporative cooling efficiency. S5: The motor shaft (484) drives the cam (496) to intermittently press the solenoid valve switch (495) after multiple reduction stages from the first reduction gear (491) to the fourth reduction gear (494), periodically opening and closing the solenoid valve (497), intermittently supplying water to the wiping cotton (45), avoiding rapid loss of rainwater and improving water resource utilization.

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