Power distribution cabinet with anti-electromagnetic interference function

Abstract

The invention discloses a power distribution cabinet with an anti-electromagnetic interference function, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a cabinet body, a cabinet door and a base, the cabinet door is connected to the cabinet body through a hinge, the cabinet body comprises a shielding cover and a flow guide cover, the base comprises a dehumidifier, an air induction seat, an air supply unit and a net cage cover, the dehumidifier is arranged at the bottom of the cabinet body, and the air induction seat is arranged at the bottom of the cabinet body. The air inducing seat, the air supply unit and the net cage cover are arranged behind the cabinet body, a refrigerating unit is further installed in the cabinet body and the cabinet door, the refrigerating unit cools the power distribution cabinet, low-temperature airflow is blown into the cabinet body to cool equipment in the power distribution cabinet, and dust is prevented from entering the cabinet body through a dust blocking curtain. The air flow in the cabinet body can flow out of the cabinet body through the dust blocking curtain, and the heat dissipation pipes are distributed in the gap between the outer layer plate and the shielding cover, so that the cooling air flow cools the heat dissipation pipes while flowing out of the cabinet body, dust is prevented from falling on the outer side of the cabinet body while the air flow flows out of the cabinet body, and the heat dissipation efficiency of the cabinet body is kept.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a power distribution cabinet with an anti-electromagnetic interference function. Background Art

[0002] With the rapid development of industrial automation and smart grids, distribution cabinets, as core devices for power distribution and equipment protection, are widely used in complex electromagnetic environments such as factories, data centers, and communication base stations. In strong electromagnetic interference scenarios, traditional distribution cabinets are susceptible to interference such as high-frequency noise and surge current, causing internal electronic components to malfunction or be damaged. For this reason, existing technologies often use metal shielding shells, filtering circuits, and grounding designs to improve anti-electromagnetic interference capabilities. However, there is a significant contradiction between anti-electromagnetic interference design and heat dissipation and dust removal requirements.

[0003] On the one hand, to maintain electromagnetic shielding effectiveness, cabinets must be fully enclosed or have minimal openings, which can lead to internal heat accumulation, accelerating component aging and even causing failures. Existing cooling solutions, such as forced air cooling or perforated ventilation, can improve temperature rise but compromise shielding integrity. External dust can easily penetrate the cabinet through the cooling holes, forming conductive dust deposits that further degrade the equipment's insulation performance. On the other hand, traditional dust removal technologies often rely on filters or regular manual cleaning, such as installing dust screens at air inlets. However, these filters are prone to clogging in high-dust environments, requiring frequent maintenance. Active dust removal devices, such as electrostatic precipitators, suffer from high energy consumption and complex structures, making them difficult to adapt to the compact space of small and medium-sized distribution cabinets. Summary of the Invention

[0004] The purpose of the present invention is to provide a power distribution cabinet with an anti-electromagnetic interference function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power distribution cabinet with anti-electromagnetic interference function, comprising a cabinet body, a cabinet door and a base, the cabinet door being connected to the cabinet body by a hinge, the cabinet body comprising a shielding cover and an air guide cover, the base comprising a dehumidifier, an induced draft seat, an air supply unit and a mesh box cover, the dehumidifier being arranged at the bottom of the cabinet body, the induced draft seat, the air supply unit and the mesh box cover being arranged at the rear of the cabinet body, a refrigeration unit being also installed in the cabinet body and the cabinet door, the refrigeration unit cooling the power distribution cabinet.

[0006] Furthermore, the air guide cover is composed of an inner plate and an outer plate, the shielding cover is embedded between the inner plate and the outer plate, and a dust curtain is arranged between the outer plate and the shielding cover. The refrigeration unit includes a heat dissipation pipe, a compression pipe, a flexible telescopic pipe, an evaporating pipe, an expansion valve and a compressor. The heat dissipation pipe is arranged in the cabinet body, and the evaporating pipe is arranged in the cabinet door. The refrigeration unit is filled with refrigerant. Under the action of the compressor, the condensing agent is sent out from the compression port of the compressor and is diverted to the heat dissipation pipes on both sides of the shielding cover through the compression pipe. The condensing agent dissipates heat to the outside in the heat dissipation pipe and is collected in the flexible telescopic pipe. The condensing agent in the flexible telescopic pipe enters the evaporating pipe after passing through the expansion valve. The temperature of the evaporating pipe is reduced, and the condensing agent flows to the negative pressure port of the compressor, realizing circulation in the pipeline.

[0007] Furthermore, the compression tube is arranged at the bottom of the shielding cover, and the heat dissipation pipe is arranged on both sides and the top of the shielding cover. Both ends of the heat dissipation pipe pass through the air guide cover and are connected to the compression tube. One end of the flexible telescopic tube is connected to the heat dissipation pipe, and the other end of the flexible telescopic tube passes through the top of the air guide cover and is connected to the cabinet door. Since the cabinet door needs to be opened and closed, a flexible telescopic tube is used to connect the heat dissipation pipe with the evaporation tube. The heat dissipation pipe is mainly distributed on the left and right sides of the shielding cover, so the heat dissipated by the refrigeration unit is concentrated on the two side walls of the shielding cover.

[0008] Furthermore, the expansion valve is arranged on the upper part of the cabinet door, and an air inlet slot running through the bottom is opened in the cabinet door, the flexible telescopic tube is connected to the expansion valve, one end of the evaporation tube is connected to the expansion valve, and the other end of the evaporation tube passes through the bottom of the cabinet door, and the compressor is arranged on the outside of the cabinet body, and the evaporation tube and the compression tube are connected to the compressor through a pipeline. The equipment in the power distribution cabinet generates heat during operation, and the air supply unit sends external air into the moisture absorption slot, and the air flow in the moisture absorption slot enters the cabinet door from the air inlet slot, and passes through The evaporator is cooled, and low-temperature air is blown into the cabinet to cool the equipment in the distribution cabinet. The cooling air in the cabinet first flows into the gap between the inner plate and the shielding cover, and then flows out from the gap between the outer plate and the shielding cover. The dust curtain prevents dust from entering the cabinet, but the air in the cabinet can flow out of the cabinet through the dust curtain. The heat pipes are distributed in the gap between the outer plate and the shielding cover. Therefore, the cooling air flow cools the heat pipes while flowing out of the cabinet. While the air flow flows out of the cabinet, it prevents dust from falling on the outside of the cabinet, thereby maintaining the heat dissipation efficiency of the cabinet.

[0009] Furthermore, a moisture absorption air trough and a moisture discharge air trough are provided inside the dehumidifier, and the moisture absorption air trough is located above the moisture discharge air trough. Several silica gel moisture absorption rollers are rotatably installed inside the dehumidifier, and the several silica gel moisture absorption rollers are arranged in a stepped manner, and each silica gel moisture absorption roller is located between the moisture absorption air trough and the moisture discharge air trough. When the air flow flows in the moisture absorption air trough, it passes through the stepped silica gel moisture absorption rollers, and the windward surface of the silica gel moisture absorption roller absorbs water vapor in the air flow. After the multiple silica gel moisture absorption rollers adsorb water vapor in the air, the dryness of the air flow entering the cabinet is ensured, and the silica gel moisture absorption roller on the water absorption side becomes heavier, and the heavier side rolls downward under the action of gravity, and the silica gel moisture absorption roller that has not absorbed water comes into contact with the air flow head-on.

[0010] Furthermore, the moisture absorption trough is connected to the top of the dehumidifier, the moisture absorption trough is connected to the air inlet trough, the top air guide cover of the dehumidification trough is connected to the inside of the dehumidification trough, and the dehumidification trough is connected to the external atmosphere through the through grooves on both sides of the dehumidifier. The silica gel moisture absorption roller rolls to the bottom and absorbs water on the side to enter the dehumidification trough, and the warm air drained from the inside of the dehumidification trough enters the dehumidification trough, and the water absorbed by the silica gel moisture absorption roller evaporates and is discharged from both sides of the dehumidifier. The silica gel moisture absorption roller rotates continuously to continuously dehumidify the air supplied, thereby achieving the effect of drying the air.

[0011] Furthermore, the air supply unit is arranged on the top of the induced draft seat, and the air supply unit includes a cross-flow air duct and a motor. The cross-flow air duct is connected to the motor shaft of the motor. A wind tunnel is opened inside the induced draft seat, and the wind tunnel is connected to the moisture absorption air trough. The motor drives the cross-flow air duct to rotate, and the air flow enters the moisture absorption air trough through the wind tunnel in the induced draft seat. The filter on the mesh cover filters the air to prevent dust from being sucked into the cross-flow air duct.

[0012] Furthermore, the mesh cover is arranged above the induced draft seat, and a filter is arranged at an angle on the top of the mesh cover. A reducer is installed on the induced draft seat. The reducer is arranged on the side of the cross-flow air duct away from the motor. The cross-flow air duct is connected to the input shaft of the reducer, and the output shaft of the reducer is provided with a spiral convex pattern wheel. The cross-flow air duct rotates while driving the reducer to rotate, and the reducer drives the spiral convex pattern wheel to rotate at a low speed.

[0013] Furthermore, a small slide groove is provided on the rear side of the shielding cover, and a slider is slidably installed in the small slide groove. A striker is provided on the top of the slider, and a spring is provided between the bottom of the slider and the small slide groove. A pin is also provided on the side of the slider, and the pin is in contact with the spiral convex dial wheel. The threaded protrusion on the spiral convex dial wheel pushes the pin downward, and the slider slides downward along the small slide groove. The spring is compressed and accumulates elastic potential energy. As the spiral convex dial wheel rotates, the pin is slowly pushed to the position where the threaded protrusion is disconnected. With the help of the elastic potential energy of the spring, the slider moves up quickly, and the striker knocks on the edge of the filter screen, causing the filter screen to vibrate, and the dust is shaken off the filter screen and slides down along the inclined surface of the filter screen, thereby improving the air intake efficiency of the air supply unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the setting of the refrigeration unit, low-temperature airflow is blown into the cabinet to cool the equipment in the distribution cabinet. The dust curtain is used to prevent dust from entering the cabinet, but the airflow in the cabinet can flow out of the cabinet through the dust curtain. The heat pipes are distributed in the gap between the outer plate and the shielding cover. Therefore, the cooling airflow cools the heat pipes while flowing out of the cabinet. The airflow prevents dust from falling on the outside of the cabinet while flowing out of the cabinet, thereby maintaining the heat dissipation efficiency of the cabinet.

[0015] 2. The silica gel desiccant roller is used to absorb moisture in the air flow to ensure the dryness of the air flow entering the cabinet. The silica gel desiccant roller on the water absorption side becomes heavier and rolls downward into the dehumidification air slot under the action of gravity. The warm air drawn from the inside of the air deflector evaporates the water absorbed by the silica gel desiccant roller. The silica gel desiccant roller rotates continuously to continuously dehumidify the air supplied to achieve the effect of drying the air.

[0016] 3. While supplying air, the cross-flow fan drives the spiral convex dial to rotate at a low speed. The threaded protrusion on the spiral convex dial pushes the pin downward, the spring is compressed and accumulates elastic potential energy, and the pin is slowly pushed to the position where the threaded protrusion is disconnected. With the help of the elastic potential energy of the spring, the slider moves upward quickly, and the impact rod hits the edge of the filter, causing the filter to vibrate. The dust is shaken off the filter and slides down the inclined surface of the filter, thereby improving the air intake efficiency of the air supply unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall disassembly structure of the present invention Figure 1 ; Figure 3 This is a schematic diagram of the overall disassembly structure of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the disassembled structure of the power distribution cabinet of the present invention; Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of area A in the middle; Figure 6 This is a schematic diagram of the disassembled structure of the base of the present invention; Figure 7 Schematic diagram of the internal structure of the dehumidifier of the present invention; Figure 8 It is a structural schematic diagram of the air induction seat part of the present invention.

[0018] Figure 9 Schematic diagram of the flow of cooling airflow of the present invention.

[0019] In the figure: 1. Cabinet body; 2. Cabinet door; 3. Base; 4. Shielding cover; 5. Heat dissipation pipe; 6. Compression pipe; 7. Flexible telescopic pipe; 8. Air guide cover; 9. Evaporation pipe; 10. Air inlet trough; 11. Small slide trough; 12. Slider; 13. Plugging pin; 14. Impact rod; 15. Dehumidifier; 16. Draft seat; 17. Mesh box cover; 18. Filter; 19. Moisture absorption trough; 20. Moisture discharge trough; 21. Silicone moisture absorption roller; 22. Cross-flow fan; 23. Motor; 24. Reducer; 25. Spiral convex dial; 26. Spring; 27. Expansion valve; 28. Dust curtain. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figures 1-9 As shown, the present invention provides a technical solution, a power distribution cabinet with anti-electromagnetic interference function, including a cabinet body 1, a cabinet door 2 and a base 3, the cabinet door 2 is connected to the cabinet body 1 by a hinge, the cabinet body 1 includes a shielding cover 4 and a guide cover 8, the base 3 includes a dehumidifier 15, an air induced seat 16, an air supply unit and a mesh box cover 17, the dehumidifier 15 is arranged at the bottom of the cabinet body 1, the air induced seat 16, the air supply unit and the mesh box cover 17 are arranged at the rear of the cabinet body 1, a refrigeration unit is also installed in the cabinet body 1 and the cabinet door 2, the refrigeration unit cools the power distribution cabinet, the guide cover 8 is composed of an inner plate and an outer plate, the shielding cover 4 is embedded between the inner plate and the outer plate, and a shielding cover 4 is arranged between the outer plate and the shielding cover 4. There is a dust curtain 28. The refrigeration unit includes a heat dissipation pipe 5, a compression pipe 6, a flexible telescopic pipe 7, an evaporation pipe 9, an expansion valve 27 and a compressor. The heat dissipation pipe 5 is arranged in the cabinet body 1, and the evaporation pipe 9 is arranged in the cabinet door 2. The refrigeration unit is filled with a refrigerant. Under the action of the compressor, the condenser is sent out from the compression port of the compressor and is diverted to the heat dissipation pipe 5 on both sides of the shielding cover 4 through the compression pipe 6. The condenser dissipates heat to the outside in the heat dissipation pipe 5 and is collected in the flexible telescopic pipe 7. The condenser in the flexible telescopic pipe 7 passes through the expansion valve 27 and enters the evaporation pipe 9. The temperature of the evaporation pipe 9 is reduced, and the condenser flows to the negative pressure port of the compressor, realizing circulation in the pipeline.

[0022] The compression tube 6 is arranged at the bottom of the shielding cover 4, and the heat dissipation tube 5 is arranged on both sides and the top of the shielding cover 4. Both ends of the heat dissipation tube 5 pass through the air deflector 8 and are connected to the compression tube 6. One end of the flexible telescopic tube 7 is connected to the heat dissipation tube 5, and the other end of the flexible telescopic tube 7 passes through the top of the air deflector 8 and is connected to the cabinet door 2. The expansion valve 27 is arranged on the upper part of the cabinet door 2, and the cabinet door 2 is provided with an air inlet slot 10 running through the bottom. The flexible telescopic tube 7 is connected to the expansion valve 27, one end of the evaporation tube 9 is connected to the expansion valve 27, and the other end of the evaporation tube 9 passes through the bottom of the cabinet door 2. The compressor (not shown in the figure) is arranged outside the cabinet body 1, and the evaporation tube 9 and the compression tube 6 are connected to the compressor through a pipeline. Since the cabinet door 2 needs to be opened and closed, the flexible telescopic tube 7 is used to connect the heat dissipation tube 5 with the evaporation tube 9. The heat dissipation tube 5 is mainly distributed on the left and right sides of the shielding cover 4. Therefore, the heat dissipated by the refrigeration unit is concentrated on the two side walls of the shielding cover 4. The equipment in the distribution cabinet generates heat during operation. The air supply unit sends external air into the moisture-absorbing wind slot 19. The air flow in the moisture-absorbing wind slot 19 enters the cabinet door 2 from the air inlet slot 10. After being cooled by the evaporator 9, the low-temperature air flow is blown into the cabinet 1 to cool the equipment in the distribution cabinet. The cooling air flow in the cabinet 1 first flows into the gap between the inner plate and the shielding cover 4, and then flows out from the gap between the outer plate and the shielding cover 4. The dust curtain 28 prevents dust from entering the cabinet 1, but the air flow in the cabinet 1 can flow out of the cabinet 1 through the dust curtain 28. The heat pipe 5 is distributed in the gap between the outer plate and the shielding cover 4. Therefore, the cooling air flow cools the heat pipe 5 while flowing out of the cabinet 1. While the air flow flows out of the cabinet 1, it prevents dust from falling on the outside of the cabinet 1, thereby maintaining the heat dissipation efficiency of the cabinet 1.

[0023] The dehumidifier 15 is provided with a moisture absorption duct 19 and a moisture discharge duct 20. The moisture absorption duct 19 is located above the moisture discharge duct 20. Several silica gel moisture absorption rollers 21 are rotatably installed inside the dehumidifier 15. Several silica gel moisture absorption rollers 21 are arranged in a stepped manner. Each silica gel moisture absorption roller 21 is located between the moisture absorption duct 19 and the moisture discharge duct 20. The moisture absorption duct 19 is connected to the top of the dehumidifier 15. The moisture absorption duct 19 is connected to the air inlet duct 10. The interior of the top air guide 8 of the moisture discharge duct 20 is connected. The moisture discharge duct 20 is connected to the external atmosphere through the through grooves on both sides of the dehumidifier 15. When the air flows in the moisture absorption duct 19, it passes through the stepped silica gel moisture absorption rollers 21. The windward surface of the silica gel moisture absorbing roller 21 absorbs the water vapor in the air flow. After multiple silica gel moisture absorbing rollers 21 adsorb the water vapor in the air, the dryness of the air flow entering the cabinet 1 is guaranteed. The silica gel moisture absorbing roller 21 on the water absorbing side becomes heavier, and the heavier side rolls downward under the action of gravity. The silica gel moisture absorbing roller 21 that has not absorbed water comes into contact with the air flow head-on, and the water absorbing side of the silica gel moisture absorbing roller 21 that rolls to the bottom enters the dehumidification air slot 20. The warm air drained from the inside of the air guide cover 8 enters the dehumidification air slot 20, and the water absorbed by the silica gel moisture absorbing roller 21 evaporates and is discharged from both sides of the dehumidifier 15. The silica gel moisture absorbing roller 21 rotates continuously to continuously dehumidify the incoming air to achieve the effect of drying the air.

[0024] The air supply unit is arranged on the top of the induced air seat 16, and the air supply unit includes a crossflow air duct 22 and a motor 23. The crossflow air duct 22 is connected to the motor shaft of the motor 23. A wind tunnel is opened inside the induced air seat 16, and the wind tunnel is connected to the moisture absorption wind slot 19. The mesh cover 17 is arranged above the induced air seat 16, and a filter 18 is arranged at an angle on the top of the mesh cover 17. A reducer 24 is installed on the induced air seat 16, and the reducer 24 is arranged on the side of the crossflow air duct 22 away from the motor 23. The crossflow air duct 22 is connected to the input shaft of the reducer 24, and the output shaft of the reducer 24 is provided with a spiral convex pattern dial 25. A small slide 11 is provided on the rear side of the shielding cover 4, and a slider 12 is slidably installed in the small slide 11. A striker 14 is provided on the top of the slider 12, and a spring 26 is provided between the bottom of the slider 12 and the small slide 11. The side of the slider 12 is also provided with a pin 13, which contacts the spiral convex pattern dial 25.

[0025] The motor 23 drives the cross-flow duct 22 to rotate, and the air flows through the wind tunnel in the air-inducing seat 16 and enters the moisture-absorbing duct 19. The filter 18 on the mesh cover 17 filters the air to prevent dust from being sucked into the cross-flow duct 22. The cross-flow duct 22 rotates while driving the reducer 24 to rotate. The reducer 24 drives the spiral convex dial 25 to rotate at a low speed. The threaded protrusion on the spiral convex dial 25 pushes the pin 13 downward, and the slider 12 slides downward along the small slide groove 11. The spring 26 is compressed and accumulates elastic potential energy. As the spiral convex dial 25 rotates, the pin 13 is slowly pushed to the position where the threaded protrusion is disconnected. With the help of the elastic potential energy of the spring 26, the slider 12 moves up quickly, and the striker 14 knocks on the edge of the filter 18, causing the filter 18 to vibrate, and the dust is shaken off the filter 18 and slides down the inclined surface of the filter 18, thereby improving the air intake efficiency of the air supply unit.

[0026] The working principle of the present invention is as follows: the refrigeration unit is filled with refrigerant. Under the action of the compressor, the condenser is sent out from the compression port of the compressor and is diverted to the heat dissipation pipes 5 on both sides of the shielding cover 4 through the compression pipe 6. The condenser dissipates heat to the outside in the heat dissipation pipe 5 and is collected in the flexible telescopic pipe 7. The condenser in the flexible telescopic pipe 7 passes through the expansion valve 27 and enters the evaporation pipe 9. The temperature of the evaporation pipe 9 is reduced, and the condenser flows to the negative pressure port of the compressor, realizing circulation in the pipeline.

[0027] Since the cabinet door 2 needs to be opened and closed, a flexible telescopic tube 7 is used to connect the heat pipe 5 with the evaporation tube 9. The heat pipe 5 is mainly distributed on the left and right sides of the shielding cover 4. Therefore, the heat dissipated by the refrigeration unit is concentrated on the two side walls of the shielding cover 4. The equipment in the distribution cabinet generates heat during operation. The air supply unit sends the external air into the moisture absorption trough 19. The air flow in the moisture absorption trough 19 enters the cabinet door 2 from the air inlet groove 10. After being cooled by the evaporation tube 9, the low-temperature air flow is blown into the cabinet body 1, which cools the equipment in the distribution cabinet. To cool down, the cooling airflow in the cabinet 1 first flows into the gap between the inner plate and the shielding cover 4, and then flows out from the gap between the outer plate and the shielding cover 4. The dust curtain 28 prevents dust from entering the cabinet 1, but the airflow in the cabinet 1 can pass through the dust curtain 28 and flow out of the cabinet 1. The heat pipe 5 is distributed in the gap between the outer plate and the shielding cover 4. Therefore, the cooling airflow cools the heat pipe 5 while flowing out of the cabinet 1. While the airflow flows out of the cabinet 1, it prevents dust from falling on the outside of the cabinet 1, thereby maintaining the heat dissipation efficiency of the cabinet 1.

[0028] When the air flow flows in the moisture absorption duct 19, it passes through the stepped silica gel moisture absorption roller 21. The windward surface of the silica gel moisture absorption roller 21 absorbs the water vapor in the air flow. After multiple silica gel moisture absorption rollers 21 adsorb the water vapor in the air, the dryness of the air flow entering the cabinet 1 is ensured. The silica gel moisture absorption roller 21 on the water absorption side becomes heavier, and the heavier side rolls downward under the action of gravity. The silica gel moisture absorption roller 21 that has not absorbed water comes into contact with the air flow head-on and rolls to the bottom. The water absorption side of the silica gel moisture absorption roller 21 enters the dehumidification duct 20. The warm air drained from the inside of the air guide cover 8 enters the dehumidification duct 20, and the water absorbed by the silica gel moisture absorption roller 21 evaporates and is discharged from both sides of the dehumidifier 15. The silica gel moisture absorption roller 21 rotates continuously to continuously dehumidify the incoming air to achieve the effect of drying the air.

[0029] The motor 23 drives the cross-flow duct 22 to rotate, and the air flows through the wind tunnel in the air-inducing seat 16 and enters the moisture-absorbing duct 19. The filter 18 on the mesh cover 17 filters the air to prevent dust from being sucked into the cross-flow duct 22. The cross-flow duct 22 rotates while driving the reducer 24 to rotate. The reducer 24 drives the spiral convex dial 25 to rotate at a low speed. The threaded protrusion on the spiral convex dial 25 pushes the pin 13 downward, and the slider 12 slides downward along the small slide groove 11. The spring 26 is compressed and accumulates elastic potential energy. As the spiral convex dial 25 rotates, the pin 13 is slowly pushed to the position where the threaded protrusion is disconnected. With the help of the elastic potential energy of the spring 26, the slider 12 moves up quickly, and the striker 14 knocks on the edge of the filter 18, causing the filter 18 to vibrate, and the dust is shaken off the filter 18 and slides down the inclined surface of the filter 18, thereby improving the air intake efficiency of the air supply unit.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A power distribution cabinet with anti-electromagnetic interference function, characterized by: The invention comprises a cabinet body (1), a cabinet door (2) and a base (3), wherein the cabinet door (2) is connected to the cabinet body (1) by a hinge, the cabinet body (1) comprises a shielding cover (4) and a guide cover (8), the base (3) comprises a dehumidifier (15), an air induction seat (16), an air supply unit and a mesh cover (17), the dehumidifier (15) is arranged at the bottom of the cabinet body (1), the air induction seat (16), the air supply unit and the mesh cover (17) are arranged at the rear of the cabinet body (1), and a refrigeration unit is further installed in the cabinet body (1) and the cabinet door (2), and the refrigeration unit cools the power distribution cabinet.

2. The power distribution cabinet with anti-electromagnetic interference function according to claim 1, characterized in that: The deflector (8) is composed of an inner plate and an outer plate, the shielding cover (4) is embedded between the inner plate and the outer plate, and a dust curtain (28) is provided between the outer plate and the shielding cover (4). The refrigeration unit comprises a heat dissipation pipe (5), a compression pipe (6), a flexible telescopic pipe (7), an evaporation pipe (9), an expansion valve (27) and a compressor, the heat dissipation pipe (5) is provided in the cabinet body (1), and the evaporation pipe (9) is provided in the cabinet door (2).

3. The power distribution cabinet with anti-electromagnetic interference function according to claim 2, characterized in that: The compression tube (6) is arranged at the bottom of the shielding cover (4), the heat dissipation tube (5) is arranged on both sides and the top of the shielding cover (4), both ends of the heat dissipation tube (5) pass through the air guide cover (8) and are connected to the compression tube (6), one end of the flexible telescopic tube (7) is connected to the heat dissipation tube (5), and the other end of the flexible telescopic tube (7) passes through the top of the air guide cover (8) and is connected to the cabinet door (2).

4. The power distribution cabinet with anti-electromagnetic interference function according to claim 3, characterized in that: The expansion valve (27) is arranged on the upper part of the cabinet door (2), and an air inlet slot (10) penetrating the bottom is provided in the cabinet door (2). The flexible telescopic tube (7) is connected to the expansion valve (27), one end of the evaporation tube (9) is connected to the expansion valve (27), and the other end of the evaporation tube (9) passes through the bottom of the cabinet door (2). The compressor is arranged outside the cabinet body (1), and the evaporation tube (9) and the compression tube (6) are both connected to the compressor through a pipeline.

5. The power distribution cabinet with anti-electromagnetic interference function according to claim 4, characterized in that: The dehumidifier (15) is provided with a moisture absorption air trough (19) and a moisture discharge air trough (20), wherein the moisture absorption air trough (19) is located above the moisture discharge air trough (20), and a plurality of silica gel moisture absorption rollers (21) are rotatably installed inside the dehumidifier (15), wherein the plurality of silica gel moisture absorption rollers (21) are arranged in a stepped manner, and each silica gel moisture absorption roller (21) is located between the moisture absorption air trough (19) and the moisture discharge air trough (20).

6. The power distribution cabinet with anti-electromagnetic interference function according to claim 5, characterized in that: The moisture absorption air trough (19) is communicated with the top of the dehumidifier (15), the moisture absorption air trough (19) is communicated with the air inlet trough (10), the top of the moisture removal air trough (20) is connected to the interior of the air guide cover (8), and the moisture removal air trough (20) is communicated with the external atmosphere through the through slots on both sides of the dehumidifier (15).

7. The power distribution cabinet with anti-electromagnetic interference function according to claim 5, characterized in that: The air supply unit is arranged on the top of the air induced seat (16), and the air supply unit includes a cross-flow air duct (22) and a motor (23). The cross-flow air duct (22) is connected to the motor shaft of the motor (23). A wind tunnel is opened inside the air induced seat (16), and the wind tunnel is connected to the moisture absorption wind slot (19).

8. The power distribution cabinet with anti-electromagnetic interference function according to claim 7, characterized in that: The mesh cover (17) is arranged above the induced draft seat (16), and a filter screen (18) is arranged obliquely on the top of the mesh cover (17). A reducer (24) is installed on the induced draft seat (16). The reducer (24) is arranged on a side of the cross-flow air duct (22) away from the motor (23). The cross-flow air duct (22) is connected to the input shaft of the reducer (24), and the output shaft of the reducer (24) is provided with a spiral convex pattern dial (25).

9. The power distribution cabinet with anti-electromagnetic interference function according to claim 8, characterized in that: A small slide groove (11) is provided on the rear side of the shielding cover (4), a slider (12) is slidably installed in the small slide groove (11), a striker (14) is provided on the top of the slider (12), a spring (26) is provided between the bottom of the slider (12) and the small slide groove (11), and a detent pin (13) is further provided on the side of the slider (12), and the detent pin (13) is in contact with the spiral convex pattern dial wheel (25).

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