Heat dissipation device for electrical cabinet

Abstract

The invention relates to a heat dissipation device for an electrical cabinet, and relates to the technical field of heat dissipation of electrical cabinets, the heat dissipation device comprises a cabinet body and a filter screen, air holes are formed in the side wall of the cabinet body in a penetrating mode, the filter screen is fixedly installed in the air holes, a mounting frame is arranged on the side wall of the cabinet body, and a sliding frame is arranged on the mounting frame in a sliding mode in the vertical direction; a sliding assembly used for driving the sliding frame to slide is arranged on the mounting frame, a brush roller is rotationally arranged on the sliding frame, the peripheral wall of the brush roller can abut against the outer side of the filter screen, a cleaning motor is fixedly arranged on the sliding frame and used for driving the brush roller to rotate, and a cleaning assembly is arranged on the cabinet body. And the cleaning assembly is used for cleaning the brush roller. The electric cabinet has the advantages that dust accumulated on the filter screen can be cleaned conveniently, the filter screen is prevented from being blocked by the dust, and the heat dissipation effect of the electric cabinet is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation of electrical cabinets, and in particular to a heat dissipation device for electrical cabinets. Background Art

[0002] Electrical cabinets are made of steel and are used to protect the normal operation of components. The materials used to make electrical cabinets are generally divided into two types: hot-rolled steel plates and cold-rolled steel plates. Cold-rolled steel plates are softer than hot-rolled steel plates and are more suitable for the production of electrical cabinets. Electrical cabinets are widely used in the chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, transportation industry, etc. Components are distributed inside the electrical cabinet. Components will generate a lot of heat when working, and a heat dissipation device is needed to dissipate the heat inside the electrical cabinet.

[0003] There is a common heat dissipation device for an electrical cabinet in the prior art, which includes a cabinet, a heat dissipation fan, and a filter. The heat dissipation fan is rotatably arranged in the cabinet, and a ventilation hole connecting the inside and outside of the cabinet is opened through the side wall of the cabinet. The filter is fixedly installed in the ventilation hole. When in use, the heat dissipation fan rotates to guide the hot air inside the electrical cabinet to be discharged from the ventilation hole. The filter prevents dust outside the cabinet from entering the cabinet through the ventilation hole to protect components.

[0004] In the process of implementing this application, it was found that there are at least the following problems in this technology: a lot of dust is easily accumulated on the filter net, and if it is not cleaned in time, it is easy to clog the filter net, affecting the heat dissipation effect of the electrical cabinet. Summary of the invention

[0005] In order to facilitate the cleaning of dust accumulated on the filter, prevent the dust from clogging the filter, and ensure the heat dissipation effect of the electrical cabinet, the present application provides a heat dissipation device for the electrical cabinet.

[0006] The present application provides a heat dissipation device for an electrical cabinet using the following technical solution: A heat dissipation device for an electrical cabinet comprises a cabinet body and a filter screen, wherein an air vent is formed through a side wall of the cabinet body, the filter screen is fixedly installed in the air vent, a mounting frame is arranged on the side wall of the cabinet body, a sliding frame is arranged on the mounting frame for sliding along a vertical direction, a sliding assembly for driving the sliding frame to slide is arranged on the mounting frame, a brush roller is rotatably arranged on the sliding frame, a peripheral wall of the brush roller can abut against the outer side of the filter screen, a cleaning motor is fixedly arranged on the sliding frame, the cleaning motor is used to drive the brush roller to rotate, a cleaning assembly is arranged on the cabinet body, and the cleaning assembly is used to clean the brush roller.

[0007] By adopting the above technical solution, when a lot of dust accumulates on the filter, the sliding assembly drives the sliding frame to move in the vertical direction, so that the peripheral wall of the brush roller abuts against the outer side of the filter, and then the cleaning motor starts to drive the brush roller to rotate, thereby cleaning the filter. During this period, the sliding assembly continuously drives the sliding frame to move, changing the contact position between the brush roller and the filter, and brushing the dust off the filter. After cleaning, the sliding assembly drives the brush roller to approach the cleaning assembly, and the cleaning assembly cleans the brush roller to ensure that the brush roller itself is clean, so that the brush roller can effectively clean the filter again, ensuring the ventilation effect of the filter, thereby ensuring that the heat dissipation performance of the electrical cabinet is not affected.

[0008] Preferably, the cleaning assembly includes a cleaning box, which is fixedly mounted on the cabinet and located below the brush roller. The cleaning box is filled with cleaning liquid and has an opening at the top. The brush roller can pass through the opening and extend into the cleaning box.

[0009] By adopting the above technical solution, when the brush roller completes the cleaning work of the filter screen, the sliding frame moves downward under the drive of the sliding assembly, driving the brush roller to pass through the opening and immerse in the cleaning liquid in the cleaning box. The cleaning liquid washes away the dust adhering to the brush roller, keeps the brush roller clean, and prepares for the next cleaning of the filter screen.

[0010] Preferably, the cleaning component further comprises a cleaning block, the bottom of the inner wall of the cleaning box is arranged in an arc shape, a plurality of cleaning blocks are fixedly arranged on the inner wall of the cleaning box, and the brush roller can abut against the cleaning block.

[0011] By adopting the above technical solution, when the brush roller is immersed in the cleaning liquid in the cleaning box, the brush roller will be against the cleaning block, and because the bottom of the inner wall of the cleaning box is arranged in an arc shape, during the rotation of the brush roller, the cleaning block can contact and rub with the brush roller as much as possible, thereby enhancing the cleaning effect of the brush roller, further removing the stubborn stains and fine dust remaining on the brush roller, ensuring the cleanliness of the brush roller, so as to better play the cleaning effect of the filter.

[0012] Preferably, the cleaning assembly further comprises a dust cover and a torsion spring, wherein the dust cover is rotatably arranged on the opening of the cleaning box, the torsion spring is arranged between the dust cover and the cleaning box, the torsion spring is used to drive the dust cover to block the opening, and the brush roller can be against the dust cover.

[0013] By adopting the above technical solution, when the brush roller is not cleaned, the torsion spring drives the dust cover to block the opening to prevent foreign impurities (such as dust brushed off by the brush roller on the filter net) from falling into the cleaning box, thereby avoiding the cleaning liquid from being contaminated as much as possible and extending the replacement interval of the cleaning liquid, thereby ensuring the cleanliness of the cleaning liquid and the cleaning effect. When the brush roller needs to be cleaned, the sliding assembly pushes the brush roller against the dust cover to overcome the torsion of the torsion spring, so that the dust cover is opened and the brush roller can smoothly enter the cleaning box for cleaning.

[0014] Preferably, the mounting frame includes a fixed frame, a movable frame, and a tension spring. The fixed frame is fixedly arranged on the side wall of the cabinet, the movable frame is slidably arranged on the fixed frame in a direction approaching or away from the filter, the sliding frame is slidably arranged on the movable frame in a vertical direction, one end of the tension spring is fixedly connected to the fixed frame, and the other end of the tension spring is fixedly connected to the movable frame, the tension spring drives the movable frame close to the filter, and a pushing assembly is also arranged on the movable frame, and the pushing assembly is used to drive the movable frame away from the filter.

[0015] By adopting the above technical solution, when cleaning the filter, under the elastic force of the tension spring, the movable frame is close to the filter, and the brush roller can be in close contact with the filter, thereby ensuring the cleaning effect of the brush on the filter. After the brush roller is cleaned by the cleaning assembly, the push-off assembly drives the movable frame to overcome the tension of the tension spring and move away from the filter, so that the wet brush roller no longer contacts the filter, preventing the wet brush roller from being squeezed by the filter, and the residual cleaning liquid on the brush roller enters the cabinet. In addition, the sliding assembly can also drive the wet brush roller to face the filter, and the hot air discharged by the cooling fan can accelerate the drying of the brush roller to prevent dust in the air from sticking to the wet brush roller.

[0016] Preferably, the push-off assembly includes a cam, a linkage member, and a driving member. Two cams are rotatably arranged on a movable frame. The two cams are spaced apart from each other in the height direction, and their axes are parallel to each other. A protrusion is arranged on the cam. The protrusions of the two cams are oriented in the same direction in the circumferential direction of the cams. The protrusion can be abutted against a fixed frame. The driving member is used to drive the cam to rotate. The linkage member is arranged between the two cams. The linkage member is used to drive the other cam to rotate together when one of the cams rotates, and the rotation direction and rotation angle are the same.

[0017] By adopting the above technical solution, when it is necessary to drive the movable frame away from the filter screen, the driving member drives one of the cams to rotate, and this cam causes the other cam to rotate synchronously through the linkage member. As the cam rotates, the raised portion of the protrusion abuts against the fixed frame, and the protrusion gradually pushes the movable frame away from the filter screen, thereby realizing the moving away action of the movable frame. When the raised portion of the protrusion does not abut against the fixed frame, under the action of the tension spring, the movable frame moves closer to the filter screen again.

[0018] Preferably, the driving member includes a first incomplete gear, a second incomplete gear, and a movable rack, the first incomplete gear and the second incomplete gear are provided with a plurality of meshing teeth, the first incomplete gear is coaxially fixed to a cam located above, the second incomplete gear is coaxially fixed to a cam located below, and a movable rack is fixed on the sliding frame; when the raised portion of the cam abuts against the fixed frame, the movable rack can only mesh with the meshing teeth of the first incomplete gear; when the raised portion of the cam does not abut against the fixed frame, the movable rack can only mesh with the meshing teeth of the second incomplete gear.

[0019] By adopting the above technical solution, during the sliding process of the sliding frame, the movable rack can alternately mesh with the first incomplete gear and the second incomplete gear. When cleaning the filter, the protrusion does not abut against the fixed frame, the sliding assembly drives the sliding frame to slide downward, the brush roller contacts the filter and cleans the filter from top to bottom. After the filter is cleaned, as the sliding assembly drives the sliding frame to continue to slide downward, the movable rack meshes with the meshing teeth of the second incomplete gear, and the second incomplete gear rotates with the cam located below. Under the action of the linkage, the protrusions of the two cams abut against the fixed frame at the same time, thereby pushing the movable frame away from the filter, so that the brush roller is away from the filter. After the brush roller is cleaned by the cleaning assembly, the sliding assembly drives the sliding frame to move upward. During the upward movement of the sliding frame, the movable rack will pass through the second incomplete gear again. However, at this time, since the raised portion of the cam abuts against the fixed frame, the movable rack will not mesh with the meshing teeth of the second incomplete gear until the sliding frame continues to move upward. The movable rack meshes with the meshing teeth of the first incomplete gear, thereby driving the cam to rotate, so that the raised portion no longer abuts against the fixed frame. The movable frame is close to the filter screen again under the action of the tension spring, ready for the next cleaning. In this way, the distance between the movable frame and the filter screen is automatically controlled to control whether the brush roller abuts against the filter screen.

[0020] Preferably, the linkage member includes a pulley and a synchronous belt, and two pulleys are provided, one of which is coaxially fixed with one of the cams, and the other pulley is coaxially fixed with the other cam. One end of the synchronous belt is sleeved on one of the pulleys, and the other end of the synchronous belt is sleeved on the other pulley. The two pulleys are connected by a synchronous belt transmission.

[0021] By adopting the above technical solution, when one of the cams rotates, the pulley fixed coaxially therewith rotates accordingly, and the other pulley is driven to rotate synchronously through the synchronous belt, thereby realizing the synchronous rotation of the two cams. In this way, the rotation direction and rotation angle of the two cams are always consistent, thereby ensuring the consistency and reliability of the push-off assembly action.

[0022] Preferably, the sliding assembly includes a driving motor, a driving gear, and a fixed rack, the fixed rack is fixedly arranged on the movable frame, the driving motor is fixedly arranged on the sliding frame, the driving gear is coaxially fixed with the driving shaft of the fixed motor, and the driving gear and the fixed rack are meshed with each other.

[0023] By adopting the above technical solution, when the sliding frame needs to be driven to slide on the movable frame, the driving motor is started to drive the driving gear to rotate. Since the driving gear and the fixed rack are meshed with each other, the rotation of the driving gear will be converted into the sliding of the sliding frame along the direction defined by the fixed rack. In this way, the moving position and speed of the sliding frame are accurately controlled, thereby achieving accurate cleaning of the filter screen by the brush roller and accurate cleaning operation in the cleaning box.

[0024] Preferably, a temperature sensor is provided in the cabinet, and the temperature sensor is electrically connected to the driving motor and the cleaning motor.

[0025] By adopting the above technical solution, the temperature sensor can monitor the temperature changes inside the cabinet in real time. When the temperature inside the cabinet rises to the preset threshold, it means that the heat dissipation network may be blocked, resulting in the inability to discharge heat. The temperature sensor sends a signal to the drive motor and the cleaning motor. The drive motor starts, driving the sliding frame to move, so that the brush roller cleans the filter; the cleaning motor also starts at the same time, driving the brush roller to rotate to enhance the cleaning effect.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the mounting frame, sliding frame, brush roller, cleaning motor and cleaning components, it is convenient to clean the dust accumulated on the filter net, prevent the dust from clogging the filter net and ensure the heat dissipation effect of the electrical cabinet; 2. By setting up a cleaning box, a cleaning block, a dust cover and a torsion spring, the cleaning effect of the brush roller is enhanced, the stubborn stains on the brush roller are effectively removed, and the cleanliness of the brush roller is ensured. At the same time, the design of the dust cover and the torsion spring can prevent the cleaning fluid from being contaminated, extend the service life of the cleaning fluid, and reduce maintenance costs; 3. By setting the cam, linkage, first incomplete gear, second incomplete gear and movable rack, the distance between the movable frame and the filter is automatically controlled, ensuring the contact and separation of the brush roller and the filter at different working stages, thereby improving the operating reliability and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a heat dissipation device for an electrical cabinet provided in an embodiment of the present application.

[0028] Figure 2 It is a schematic cross-sectional structure diagram of a heat dissipation device for an electrical cabinet provided in an embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A.

[0030] Figure 4 yes Figure 2 Enlarged view of part B.

[0031] Figure 5 It is a schematic diagram of the partial cross-section structure of the push-away component position in the embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the structure of the mounting frame in the embodiment of the present application.

[0033] Description of reference numerals: 1, cabinet; 11, air vent; 12, filter; 2, mounting frame; 21, sliding frame; 211, brush roller; 212, cleaning motor; 213, main slider; 214, side plate; 22, fixed frame; 221, column; 222, vertical rod; 23, movable frame; 231, square frame; 232, guide rod; 24, tension spring; 25, push-off assembly; 251, cam; 252, linkage; 2521 , pulley; 2522, synchronous belt; 253, driving member; 2531, first incomplete gear; 2532, second incomplete gear; 2533, movable rack; 3, cleaning assembly; 31, cleaning box; 311, opening; 32, cleaning block; 33, dust cover; 34, torsion spring; 4, sliding assembly; 41, driving motor; 42, driving gear; 43, fixed rack; 5, temperature sensor; 6, mounting ring; 61, cooling fan. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The present application embodiment discloses a heat dissipation device for an electrical cabinet. Figure 1 and Figure 2 , which comprises a cabinet 1 and a filter 12. An openable cabinet door is provided on the front of the cabinet 1, and a ventilation hole 11 is provided through the side wall of the cabinet 1. A mounting ring 6 which is adapted to the ventilation hole 11 is fixed in the ventilation hole 11, and the mounting ring 6 extends toward the inside of the cabinet 1. A heat dissipation fan 61 is fixed in the mounting ring 6, and the filter 12 is fixedly installed in the ventilation hole 11. When the heat dissipation fan 61 rotates, the hot air in the cabinet 1 is guided to be discharged from the cabinet 1 through the filter 12.

[0036] Reference Figure 1A mounting frame 2 is provided on the side wall of the cabinet 1, a sliding frame 21 is provided on the mounting frame 2 for sliding along the vertical direction, and a sliding assembly 4 for driving the sliding frame 21 to slide is provided on the mounting frame 2. A brush roller 211 is rotatably provided at the bottom of the sliding frame 21, and the peripheral wall of the brush roller 211 can abut against the outer side of the filter 12. A cleaning motor 212 is fixedly provided on the sliding frame 21. In this embodiment, the cleaning motor 212 adopts a waterproof motor, and the cleaning motor 212 is used to drive the brush roller 211 to rotate. A cleaning assembly 3 is provided on the cabinet 1, and the cleaning assembly 3 is used to clean the brush roller 211.

[0037] Specifically, refer to Figure 1 and Figure 6 The sliding frame 21 includes a main slider 213 and two side plates 214. The main slider 213 slides on the mounting frame 2. The two side plates 214 are fixed to the bottom of the main slider 213. The brush roller 211 is located between the two side plates 214 and rotates with the two side plates 214 at the same time. The cleaning motor 212 is fixed on one of the side plates 214. The driving shaft of the cleaning motor 212 passes through the side plates 214 and is coaxially fixed with the brush roller 211.

[0038] In order to facilitate the cleaning of dust adhering to the brush roller 211, refer to Figure 1 and Figure 3 The cleaning assembly 3 includes a cleaning box 31 and a cleaning block 32. The cleaning box 31 is fixedly mounted on the side wall of the cabinet 1, and the cleaning box 31 is located below the brush roller 211. The cleaning box 31 is filled with a cleaning liquid, and the cleaning liquid can be water, or can be selected according to the nature of the dust in the air. An opening 311 is provided at the top of the cleaning box 31, and the cleaning motor 212 and the brush roller 211 can pass through the opening 311 and extend into the cleaning box 31. The bottom of the inner wall of the cleaning box 31 is arranged in an arc shape, and a number of cleaning blocks 32 are fixedly arranged on the inner wall of the cleaning box 31. Specifically, the cross-section of the cleaning block 32 is arranged in a triangular shape. The brush roller 211 can abut against the cleaning block 32. When the brush roller 211 abuts against the cleaning block 32, the cleaning motor 212 drives the brush roller 211 to rotate, so that the brush roller 211 scrapes against the cleaning block 32.

[0039] In order to prevent foreign matter from falling into the cleaning box 31 and causing the cleaning liquid to be contaminated, refer to Figure 1 and Figure 3The cleaning assembly 3 further includes a dust cover 33 and a torsion spring 34. The dust cover 33 is rotatably disposed on the opening 311 of the cleaning box 31, and the torsion spring 34 is disposed between the dust cover 33 and the cleaning box 31. The torsion spring 34 is used to drive the dust cover 33 to block the opening 311, and the brush roller 211 can abut against the dust cover 33. When the brush roller 211 is not cleaned, the torsion spring 34 drives the dust cover 33 to block the opening 311 to prevent foreign matter from falling into the cleaning box 31. When the brush roller 211 needs to be cleaned, the sliding assembly 4 pushes the brush roller 211 to abut against the dust cover 33, overcomes the torsion of the torsion spring 34, opens the dust cover 33, and allows the brush roller 211 to smoothly enter the cleaning box 31 for cleaning.

[0040] In order to prevent the brush roller 211 from being contacted and squeezed by the filter screen 12 during the upward movement after the brush roller 211 is cleaned, the residual cleaning liquid on the brush roller 211 may enter the cabinet 1. Figure 1 The mounting frame 2 includes a fixed frame 22, a movable frame 23, and a tension spring 24. The fixed frame 22 is fixedly arranged on the side wall of the cabinet 1. The movable frame 23 is slidably arranged on the fixed frame 22 in a direction close to or away from the filter screen 12, and the sliding frame 21 is slidably arranged on the movable frame 23 in a vertical direction. One end of the tension spring 24 is fixedly connected to the fixed frame 22, and the other end of the tension spring 24 is fixedly connected to the movable frame 23, and the tension spring 24 drives the movable frame 23 to approach the filter screen 12. A push-off assembly 25 is also arranged on the movable frame 23, and the push-off assembly 25 is used to drive the movable frame 23 away from the filter screen 12.

[0041] Specifically, refer to Figure 1 and Figure 6 In this embodiment, the fixed frame 22 includes four columns 221 and two vertical rods 222. The four columns 221 are vertically fixed on the side wall of the cabinet 1, and the four columns 221 are distributed at the four corners of the side wall of the cabinet 1. The vertical rods 222 simultaneously connect two columns 221 located in the same vertical direction. The movable frame 23 includes a square frame 231 and four guide rods 232. The guide rods 232 are fixed at the four corners of the square frame 231, and the guide rods 232 are inserted into the columns 221 of the fixed frame 22.

[0042] Reference Figure 5The push-off assembly 25 includes a cam 251, a linkage member 252, and a driving member 253. Two cams 251 are rotatably arranged on the movable frame 23. The two cams 251 are spaced apart from each other in the height direction, and their axes are parallel to each other. A protrusion is arranged on the cam 251, and the protrusions of the two cams 251 are oriented in the same direction in the circumferential direction of the cam 251. The protrusion can abut against the fixed frame 22, and the driving member 253 is used to drive the cam 251 to rotate. The linkage member 252 is arranged between the two cams 251, and the linkage member 252 is used to drive the other cam 251 to rotate together when one of the cams 251 rotates, and the rotation direction and rotation angle are the same.

[0043] Reference Figure 5 The driving member 253 includes a first incomplete gear 2531, a second incomplete gear 2532, and a movable rack 2533. A plurality of meshing teeth are provided on the first incomplete gear 2531 and the second incomplete gear 2532. The first incomplete gear 2531 is coaxially fixed to the cam 251 located above, and the second incomplete gear 2532 is coaxially fixed to the cam 251 located below. A movable rack 2533 is fixedly provided on the sliding frame 21. When the raised portion of the cam 251 abuts against the fixed frame 22, the movable rack 2533 can only mesh with the meshing teeth of the first incomplete gear 2531; when the raised portion of the cam 251 does not abut against the fixed frame 22, the movable rack 2533 can only mesh with the meshing teeth of the second incomplete gear 2532.

[0044] Specifically, refer to Figure 5 and Figure 6, the movable rack 2533 is located on the side of the first incomplete gear 2531 and the second incomplete gear 2532 away from the cabinet 1, and the teeth of the movable rack 2533 are facing the cabinet 1. When the raised portion of the cam 251 does not abut against the fixed frame 22, the raised portions of the two cams 251 are both located below the cam 251. The meshing teeth of the first incomplete gear 2531 are located above the first incomplete gear 2531, and the meshing teeth of the second incomplete gear 2532 are located on the side of the second incomplete gear 2532 away from the cabinet 1 (i.e., the position shown in the figure). At this time, when the movable rack 2533 slides downward with the sliding frame 21, the movable rack 2533 can only mesh with the meshing teeth of the second incomplete gear 2532, and after meshing, under the action of the linkage 252, the two cams 251, the first incomplete gear 2531, and the second incomplete gear 2532 are driven to rotate together. After the rotation, the protrusion of the cam 251 faces the cabinet 1 (at this time, the protrusion abuts against the vertical rod 222 of the fixed frame 22, the movable frame 23 is away from the cabinet 1, and the brush roller 211 is away from the cabinet 1), and at this time, the meshing teeth of the first incomplete gear 2531 are located on the side of the first incomplete gear 2531 away from the cabinet 1, and the meshing teeth of the second incomplete gear 2532 are located below the second incomplete gear 2532. At this time, during the upward sliding of the movable rack 2533 along with the sliding frame 21, the movable rack 2533 can only mesh with the meshing teeth of the first incomplete gear 2531. That is, during the upward movement of the movable rack 2533, the second incomplete gear 2532 will not be driven to rotate, and the brush roller 211 is still away from the cabinet 1. After the brush roller 211 passes over the filter 12, the meshing teeth of the movable rack 2533 and the first incomplete gear 2531, and the cam 251 rotates in the opposite direction to reset.

[0045] Reference Figure 5 The linkage member 252 includes a pulley 2521 and a synchronous belt 2522. Two pulleys 2521 are provided, one of which is coaxially fixed to one of the cams 251, and the other pulley 2521 is coaxially fixed to the other cam 251. One end of the synchronous belt 2522 is sleeved on one of the pulleys 2521, and the other end of the synchronous belt 2522 is sleeved on the other pulley 2521. The two pulleys 2521 are connected by the synchronous belt 2522. In this embodiment, the diameters of the two pulleys 2521 are equal, and the synchronous belt 2522 and the pulleys 2521 are meshed for transmission.

[0046] Reference Figure 4 The sliding assembly 4 includes a driving motor 41, a driving gear 42, and a fixed rack 43. The fixed rack 43 is fixedly arranged on the movable frame 23. The driving motor 41 is fixedly arranged on the sliding frame 21. The driving gear 42 is coaxially fixed with the driving shaft of the fixed motor, and the driving gear 42 and the fixed rack 43 are meshed with each other.

[0047] Reference Figure 2A temperature sensor 5 is provided in the cabinet 1 , and the temperature sensor 5 is electrically connected to the driving motor 41 and the cleaning motor 212 .

[0048] The implementation principle of a heat dissipation device for an electrical cabinet in an embodiment of the present application is as follows: during the operation of the electrical cabinet, the temperature sensor 5 monitors the temperature inside the cabinet 1 in real time. When the temperature exceeds the set threshold, it indicates that a lot of dust may have accumulated on the filter 12, affecting the heat dissipation effect. At this time, the drive motor 41 and the cleaning motor 212 are started at the same time, the drive motor 41 drives the drive gear 42 to rotate and mesh with the fixed rack 43, driving the sliding frame 21 to slide in the vertical direction of the movable frame 23, and the drive motor 41 drives the electric brush roller 211 to rotate.

[0049] When the brush roller 211 moves to the filter 12, the brush roller 211 cleans the dust on the filter 12. Then, the sliding frame 21 continues to slide downward, and the movable rack 2533 meshes with the meshing teeth of the second incomplete gear 2532. The second incomplete gear 2532 and the cam 251 located below rotate together, and under the action of the pulley 2521 and the synchronous belt 2522, the protrusions of the two cams 251 rotate simultaneously and abut against the fixed frame 22. Thereby, the movable frame 23 is pushed away from the filter 12, so that the brush roller 211 is away from the filter 12.

[0050] Then, the brush roller 211 pushes open the dust cover 33 and extends into the cleaning box 31 . The brush roller 211 abuts against the cleaning block 32 in the cleaning liquid and scrapes on the cleaning block 32 , thereby completing the cleaning of the brush roller 211 .

[0051] After the brush roller 211 is cleaned, the sliding frame 21 moves upward. During the upward movement of the sliding frame 21, the movable rack 2533 will first pass through the second incomplete gear 2532 again. However, at this time, the movable rack 2533 will not mesh with the meshing teeth of the second incomplete gear 2532. The sliding frame 21 continues to move upward, and the wet brush roller 211 is no longer in contact with the filter 12, preventing the wet brush roller 211 from being squeezed by the filter 12, and the cleaning liquid remaining on the brush roller 211 will not enter the cabinet 1. At this time, the wet brush roller 211 is facing the filter 12, and the hot air discharged by the cooling fan 61 can accelerate the drying of the brush roller 211 to prevent dust in the air from sticking to the wet brush roller 211.

[0052] Finally, the sliding frame 21 continues to move upward, and the movable rack 2533 meshes with the meshing teeth of the first incomplete gear 2531, thereby driving the cam 251 to rotate in the opposite direction and reset, so that the protrusion of the cam 251 no longer abuts against the fixed frame 22, and the movable frame 23 approaches the filter screen 12 again under the action of the tension spring 24, ready for the next cleaning. In this way, it is convenient to clean the dust accumulated on the filter screen 12, prevent the dust from clogging the filter screen 12, and ensure the heat dissipation effect of the electrical cabinet.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat dissipation device for an electrical cabinet, comprising a cabinet body (1) and a filter screen (12), wherein a ventilation hole (11) is formed through a side wall of the cabinet body (1), and the filter screen (12) is fixedly installed in the ventilation hole (11), characterized in that: A mounting frame (2) is arranged on the side wall of the cabinet (1); a sliding frame (21) is arranged on the mounting frame (2) for sliding along a vertical direction; a sliding assembly (4) for driving the sliding frame (21) to slide is arranged on the mounting frame (2); a brush roller (211) is rotatably arranged on the sliding frame (21); a peripheral wall of the brush roller (211) can abut against the outer side of the filter screen (12); a cleaning motor (212) is fixedly arranged on the sliding frame (21); the cleaning motor (212) is used to drive the brush roller (211) to rotate; and a cleaning assembly (3) is arranged on the cabinet (1); the cleaning assembly (3) is used to clean the brush roller (211).

2. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The cleaning assembly (3) comprises a cleaning box (31), the cleaning box (31) being fixedly mounted on the cabinet (1), the cleaning box (31) being located below the brush roller (211), the cleaning box (31) being filled with cleaning liquid, the top of the cleaning box (31) being provided with an opening (311), the brush roller (211) being able to pass through the opening (311) and extend into the cleaning box (31).

3. The heat dissipation device for an electrical cabinet according to claim 2, characterized in that: The cleaning assembly (3) further comprises a cleaning block (32); the inner wall of the cleaning box (31) is arranged in an arc shape; a plurality of cleaning blocks (32) are fixedly arranged on the inner wall of the cleaning box (31); and the brush roller (211) can abut against the cleaning block (32).

4. The heat dissipation device for an electrical cabinet according to claim 2, characterized in that: The cleaning assembly (3) further comprises a dust cover (33) and a torsion spring (34); the dust cover (33) is rotatably arranged on the opening (311) of the cleaning box (31); the torsion spring (34) is arranged between the dust cover (33) and the cleaning box (31); the torsion spring (34) is used to drive the dust cover (33) to block the opening (311); and the brush roller (211) can abut against the dust cover (33).

5. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The mounting frame (2) comprises a fixed frame (22), a movable frame (23), and a tension spring (24); the fixed frame (22) is fixedly arranged on the side wall of the cabinet (1); the movable frame (23) is slidably arranged on the fixed frame (22) in a direction approaching or moving away from the filter screen (12); the sliding frame (21) is slidably arranged on the movable frame (23) in a vertical direction; one end of the tension spring (24) is fixedly connected to the fixed frame (22); the other end of the tension spring (24) is fixedly connected to the movable frame (23); the tension spring (24) drives the movable frame (23) to approach the filter screen (12); and a push-off assembly (25) is also arranged on the movable frame (23); the push-off assembly (25) is used to drive the movable frame (23) away from the filter screen (12).

6. The heat dissipation device for an electrical cabinet according to claim 5, characterized in that: The push-off assembly (25) comprises a cam (251), a linkage member (252), and a driving member (253). Two cams (251) are rotatably arranged on the movable frame (23). The two cams (251) are spaced apart from each other in the height direction, and their axes are parallel to each other. A protrusion is arranged on the cam (251). The protrusions of the two cams (251) are oriented in the same direction in the circumferential direction of the cam (251). The protrusion can abut against the fixed frame (22). The driving member (253) is used to drive the cam (251) to rotate. The linkage member (252) is arranged between the two cams (251). The linkage member (252) is used to drive the other cam (251) to rotate together when one of the cams (251) rotates, and the rotation direction and rotation angle are the same.

7. The heat dissipation device for an electrical cabinet according to claim 6, characterized in that: The driving member (253) comprises a first incomplete gear (2531), a second incomplete gear (2532), and a movable rack (2533). The first incomplete gear (2531) and the second incomplete gear (2532) are provided with a plurality of meshing teeth. The first incomplete gear (2531) is coaxially fixed to a cam (251) located above, and the second incomplete gear (2532) is coaxially fixed to a cam (251) located below. The movable rack (2533) is fixedly provided on the sliding frame (21); when the raised portion of the cam (251) abuts against the fixed frame (22), the movable rack (2533) can only mesh with the meshing teeth of the first incomplete gear (2531); when the raised portion of the cam (251) does not abut against the fixed frame (22), the movable rack (2533) can only mesh with the meshing teeth of the second incomplete gear (2532).

8. The heat dissipation device for an electrical cabinet according to claim 6, characterized in that: The linkage member (252) comprises a pulley (2521) and a synchronous belt (2522). The pulleys (2521) are provided in two, one of which is coaxially fixed to one of the cams (251), and the other of which is coaxially fixed to the other cam (251). One end of the synchronous belt (2522) is sleeved on one of the pulleys (2521), and the other end of the synchronous belt (2522) is sleeved on the other pulley (2521). The two pulleys (2521) are connected by transmission via the synchronous belt (2522).

9. The heat dissipation device for an electrical cabinet according to claim 1, characterized in that: The sliding assembly (4) comprises a driving motor (41), a driving gear (42), and a fixed rack (43); the fixed rack (43) is fixedly arranged on the movable frame (23); the driving motor (41) is fixedly arranged on the sliding frame (21); the driving gear (42) is coaxially fixed with a driving shaft of the fixed motor; and the driving gear (42) and the fixed rack (43) are meshed with each other.

10. A heat dissipation device for an electrical cabinet according to claim 9, characterized in that: A temperature sensor (5) is provided in the cabinet (1), and the temperature sensor (5) is electrically connected to the driving motor (41) and the cleaning motor (212).

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