An electric control cabinet

Abstract

The application relates to the technical field of electric control cabinets, and discloses an electric control cabinet which comprises a cabinet body, a first partition plate arranged above the cabinet body, a first air inlet and a first air outlet arranged on the first partition plate, and a dehumidifying device arranged on the first partition plate; the dehumidifying device comprises a compressor, an evaporator, a condenser and an air extractor; a water receiving box is arranged below the condenser on the first partition plate; a second air inlet is arranged on one side wall of the cabinet body, and a second air outlet is arranged on the other side wall; a second partition plate is further arranged on the inner side wall of the cabinet body; an air inlet cavity is formed between the second partition plate and the cabinet body; a filter ring is arranged between the cabinet body and the second partition plate; a water storage box is arranged on the cabinet body; the water storage box and the water receiving box are connected through a water pipe; a water outlet pipe is arranged at the lower end of the water storage box; and the pipe opening of the water outlet pipe is located above the filter ring; the application can dehumidify the inside of the electric control cabinet.

Description

Technical Field

[0001] This application relates to the technical field of electrical control cabinets, and in particular to an electrical control cabinet. Background Technology

[0002] Electrical control cabinets are central integrated equipment for controlling electrical systems. They typically contain a large number of electrical components. If the humidity inside the control cabinet is too high, it can accelerate the corrosion of the components, leading to problems such as poor insulation, poor contact, and leakage. This not only reduces the lifespan of the electrical components but also poses significant safety hazards.

[0003] Currently, common solutions for moisture control in electrical control cabinets include: installing heaters to dissipate internal moisture and increase overall temperature and humidity levels; adding ventilation openings to introduce dry outside air through natural or forced ventilation to reduce internal humidity; and using chemical desiccants placed inside the cabinet to absorb excess moisture. While these methods can alleviate the moisture problem to some extent, they each have their own limitations and shortcomings in practical applications.

[0004] For example, while heaters can remove some moisture, they raise the internal temperature of the electrical control cabinet, increasing the risk of fire; vents can introduce air, but their dehumidification effect is not ideal when the external air humidity is high, and the introduced external air may also bring in dust, affecting equipment operation; while chemical desiccants have limited effectiveness and need to be replaced regularly. Therefore, how to effectively solve the problem of excessive moisture inside the electrical control cabinet has become an urgent technical challenge. Summary of the Invention

[0005] In order to dehumidify the inside of the electrical control cabinet, this application provides an electrical control cabinet.

[0006] This application provides an electrical control cabinet, which adopts the following technical solution:

[0007] An electrical control cabinet includes a cabinet body, a first partition is provided on the top of the cabinet body, the first partition and the top of the cabinet body form a dehumidification chamber, a first air inlet and a first air outlet are provided on the first partition, and a dehumidification device is provided on the first partition between the first air inlet and the first air outlet.

[0008] The dehumidification device includes a compressor, an evaporator, and a condenser, as well as an exhaust fan for drawing air from the cabinet into the dehumidification chamber through the first air inlet. The exhaust port of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the evaporator through a throttling element, the outlet of the evaporator is connected to the suction port of the compressor, and a water collection box is provided on the first partition below the condenser.

[0009] A second air inlet is provided on one side wall of the cabinet, and a second air outlet is provided on the other side wall; a second partition is also provided on the inner side wall of the cabinet, forming an air inlet cavity between the second partition and the cabinet side wall; a filter ring is provided between the cabinet side wall and the second partition; the second air inlet is connected to the inner space of the filter ring; a third air inlet is provided on the second partition, and the third air inlet is connected to the outer space of the filter ring.

[0010] A water storage box is provided on the side wall of the cabinet. The water storage box is connected to the water receiving box by a water pipe. A water outlet pipe is provided at the lower end of the water storage box. A water valve is provided at the water outlet pipe to control the water outlet. The outlet of the water outlet pipe is located above the filter ring. A drain pipe is provided at the lower end of the cabinet. The drain pipe is connected to the air inlet cavity.

[0011] By adopting the above technical solution, a dehumidification chamber and dehumidification device are set at the top of the cabinet. The air inside the cabinet is drawn into the dehumidification chamber by the exhaust fan, and after being dehumidified by the dehumidification device, it is discharged from the first air outlet. This can effectively reduce the humidity inside the cabinet and prevent electrical components from being damaged by moisture. At the same time, the water collection box can collect condensate and discharge it to the water storage box through the water pipe, avoiding the accumulation of condensate inside the cabinet and keeping the cabinet dry. The filter ring can remove dust from the air entering the cabinet. Furthermore, the water stored in the water storage box can be used to flush the filter ring below by controlling the water valve to keep the filter ring clean.

[0012] Optionally, a humidity sensor is installed inside the cabinet, and the humidity sensor is connected to the dehumidification device.

[0013] By adopting the above technical solution, the humidity sensor can monitor the humidity inside the cabinet in real time. When the humidity exceeds the set value, the dehumidification device will be automatically started to dehumidify, realizing automatic control, improving dehumidification efficiency, ensuring that the humidity inside the cabinet is always within a suitable range, and extending the service life of electrical components.

[0014] Optionally, a water level sensor is provided on the side wall of the water storage box, and the water level sensor is connected to the water valve.

[0015] By adopting the above technical solution, the water level sensor is connected to the water valve. When the water level in the water storage box reaches a certain height, the water level sensor sends a signal to control the water valve to open and discharge the water, thereby rinsing and cleaning the filter ring from time to time.

[0016] Optionally, one end of the filter ring is rotatably connected to a positioning ring, which is fixed to the side wall of the cabinet. A positioning groove is provided on the second partition, and the other end of the filter ring is rotatably inserted into the positioning groove. The center position of the water outlet pipe is staggered relative to the axis position of the filter ring on the horizontal projection.

[0017] By adopting the above technical solution, the rotating connection method of the filter ring and the staggered arrangement of the water outlet pipe and the filter ring, the discharged water can impact the filter ring in an eccentric manner, causing the filter ring to rotate, thereby performing circumferential rinsing and improving the cleaning effect on the filter ring.

[0018] Optionally, a central column is provided on the second partition plate. The central column is coaxially disposed inside the filter ring. Cleaning bristles are provided on the upper side wall of the central column. The cleaning bristles are evenly distributed along the length direction of the central column, and the ends of the cleaning bristles abut against the inner side wall of the filter ring.

[0019] By adopting the above technical solution, the cleaning bristles on the central column can continuously clean the inner wall of the filter ring during the rotation of the filter ring, preventing dust and other impurities from adhering to the inner wall of the filter ring and improving cleaning efficiency.

[0020] Optionally, an impact ball is provided on the lower side wall of the central column, and the impact ball is connected to the central column by a connecting rope. Several protrusions are provided on the inner side wall of the filter ring. When the filter ring rotates, the impact ball can collide with the protrusions.

[0021] By adopting the above technical solution, the impact design of the impact ball and the convex strip allows the impact ball to continuously strike the convex strip when the filter ring rotates, generating vibration that causes dust and other impurities on the filter ring to fall off, further improving the cleaning effect of the filter ring, enhancing filtration performance, and reducing the problem of poor air intake caused by filter ring blockage.

[0022] Optionally, the air inlet cavity is provided with a water pipe and a ventilation pipe connected to the water pipe, the filter ring is provided at the connection between the water pipe and the ventilation pipe, the water outlet of the water storage box is connected to the upper end of the water pipe, the drain pipe is connected to the lower end of the water pipe, and the third air inlet is connected to the ventilation pipe.

[0023] By adopting the above technical solution, the water pipe and ventilation pipe are set up so that the air and water in the air intake cavity can flow through the ventilation pipe and water pipe respectively, which plays a guiding role; at the same time, the filter ring is located at the connection between the two, which can filter the air and be washed by the water in the water pipe, realizing the dual functions of air filtration and filter ring cleaning.

[0024] Optionally, the second partition is further provided with an opening and closing assembly for closing the water pipe or the ventilation pipe. The opening and closing assembly includes two first baffles and two second baffles that are rotatably arranged on both sides of the water pipe, and a power source for controlling the rotation of the first baffles and the second baffles. The two first baffles are arranged above the filter ring, and the two second baffles are arranged below the filter ring. When the first baffles and the second baffles are both in a horizontal state, the water pipe can be closed. When the first baffles and the second baffles are both flipped to a vertical state, the ventilation pipe can be closed.

[0025] By adopting the above technical solution, the opening and closing components can be flexibly controlled to open and close the water pipes and ventilation pipes as needed. When the filter rings need to be flushed, the ventilation pipes are closed and the water pipes are opened to allow water to pass through the filter rings. At this time, the first and second baffles can block the water and prevent it from entering the ventilation pipes. When air needs to be introduced, the water pipes are closed and the ventilation pipes are opened to guide the air and improve the efficiency of air entering the cabinet through the filter rings.

[0026] Optionally, magnets are provided at the ends of the first baffle and the second baffle, and the magnets at the ends of the two first baffles and the two second baffles can attract each other magnetically. At the same time, the magnets at the ends of the first baffle and the second baffle located on the same side can attract each other magnetically.

[0027] By adopting the above technical solution, the mutual magnetic attraction design of the magnets at the end of the baffle allows the baffle to be automatically positioned during rotation. When the baffle is in a horizontal or vertical state, the magnets attract each other, fixing the position of the baffle and ensuring reliable sealing of the water pipe or ventilation pipe, thereby improving the sealing and reliability of the equipment.

[0028] Optionally, the power source is an electric motor, which is mounted on the second partition. Both the first and second partitions are provided with rotating shafts, which rotatably pass through the second partition and are connected to the output shaft of the electric motor.

[0029] By adopting the above technical solution, the motor, as the power source, can precisely control the rotation of the baffle and realize the automatic opening and closing of the baffle.

[0030] In summary, this application includes at least one of the following beneficial effects:

[0031] 1. Through the synergistic effect of dehumidification devices, humidity sensors, water collection boxes, and water storage boxes, the humidity inside the cabinet can be precisely controlled and effectively reduced, providing a dry operating environment for electrical components and significantly improving the stability and reliability of electrical components;

[0032] 2. By opening a second air inlet and a second air outlet, air circulation inside and outside the cabinet is achieved, ensuring the heat dissipation effect of the cabinet. At the same time, a filter ring is installed to filter the air entering the cabinet. Moreover, the condensate accumulated in the water storage box can be opened intermittently under the control of the water level sensor to flush the filter ring, so as to ensure the filtration effect of the filter ring. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0034] Figure 2 This is a sectional view of the cabinet.

[0035] Figure 3 This is a schematic diagram of the dehumidification device;

[0036] Figure 4 This is a cross-sectional view of the second partition.

[0037] Figure 5 This is a schematic diagram of the internal structure of the air inlet cavity;

[0038] Figure 6 yes Figure 5 A magnified structural diagram of point A in the middle.

[0039] Explanation of reference numerals in the attached drawings: 1. Cabinet; 11. First partition; 111. First air inlet; 112. First air outlet; 12. Second air inlet; 13. Second air outlet; 14. Second partition; 141. Third air inlet; 15. Water storage box; 151. Water outlet pipe; 152. Water valve; 153. Water level sensor; 16. Drain pipe; 17. Humidity sensor; 2. Dehumidification chamber; 3. Dehumidification device; 31. Compressor; 32. Evaporator; 33. Condenser; 34. Exhaust fan; 4. Water collection box; 5. Air inlet chamber; 51. Water pipe; 52. Ventilation duct; 6. Filter ring; 61. Positioning ring; 62. Raised strip; 7. Central column; 71. Cleaning bristles; 72. Impact ball; 8. Opening and closing assembly; 81. First baffle; 811. Rotating shaft; 82. Second baffle; 83. Power source. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0041] Example 1:

[0042] This application discloses an electrical control cabinet. (Refer to...) Figure 1 and Figure 2The system includes a cabinet 1, with a first partition 11 on top of the cabinet 1. The first partition 11 divides the interior of the cabinet 1 into upper and lower spaces. The first partition 11 and the top of the cabinet 1 form a dehumidification chamber 2. The space between the first partition 11 and the bottom plate of the cabinet 1 is the main space for installing various electrical components. The first partition 11 is a metal plate, and a first air inlet 111 and a first air outlet 112 are respectively opened at both ends of the first partition 11. Dust filters can be installed on both the first air inlet 111 and the first air outlet 112.

[0043] Reference Figure 2 and Figure 3 In this embodiment, a dehumidification device 3 is provided inside the dehumidification chamber 2. The dehumidification device 3 mainly includes a compressor 31, an evaporator 32, and a condenser 33, as well as an exhaust fan 34 for drawing air from the cabinet into the dehumidification chamber 2 through the first air inlet 111. Specifically, a partition plate can also be provided inside the dehumidification chamber 2 to divide the dehumidification chamber 2 into a smaller first space and a larger second space. The compressor 31 is located in the first space, and the first air inlet 111 and the first air outlet 112 are both connected to the second space. The evaporator 32 is located on the side close to the first air inlet 111, the exhaust fan 34 is located on the side close to the first air outlet 112, and the condenser 33 is located between the evaporator 32 and the exhaust fan 34.

[0044] The exhaust port of compressor 31 is connected to the inlet of condenser 33, and the outlet of condenser 33 is connected to the inlet of evaporator 32 through a throttling element, which can be a capillary tube or an expansion valve. The outlet of evaporator 32 is connected to the suction port of compressor 31. During operation, the exhaust fan 34 is started, drawing air into cabinet 1 through the first air inlet 111. The airflow passes through evaporator 32, condenser 33, and exhaust fan 34 in sequence, and is then returned to cabinet 1 through the first air outlet 112. At the same time, compressor 31 compresses low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure gas. The high-temperature, high-pressure gas enters condenser 33 and, through heat exchange with outside air or cooling water, becomes low-temperature, high-pressure liquid. The low-temperature, high-pressure liquid is throttled and depressurized through the throttling element, becoming low-temperature, low-pressure gas. The low-temperature, low-pressure gas enters evaporator 32, absorbs heat from the air, and causes water vapor in the airflow passing through evaporator 32 to condense into water droplets that adhere to evaporator 32, thereby achieving dehumidification and drying of the air. A water collection box 4 is provided on the first partition 11 below the condenser 33; water droplets condensed on the evaporator 32 can drip into the water collection box 4 for collection. The detailed working principle of the dehumidification device 3 is existing technology and will not be elaborated here.

[0045] Preferably, a humidity sensor 17 can be installed inside the cabinet 1. The humidity sensor 17 is connected to the dehumidification device 3, so that when the humidity inside the cabinet 1 reaches a preset value, the dehumidification device 3 can be automatically activated to dehumidify the air inside the cabinet.

[0046] Reference Figure 1 and Figure 4 In the embodiments of this application, using Figure 1 The locations shown are for reference only. A second air inlet 12 is provided on the left side wall of cabinet 1, and a second air outlet 13 is provided on the right side wall. A second partition 14 is also provided on the inner side wall of the left side of cabinet 1, forming a relatively closed air inlet cavity 5 between the second partition 14 and the side wall of cabinet 1. A filter ring 6 is provided between the side wall of cabinet 1 and the second partition 14. The axis of the filter ring 6 is perpendicular to the side wall of cabinet 1, and the second air inlet 12 is connected to the inner space of the filter ring 6. The filter ring 6 is used to filter impurities and dust in the air, and its side wall can preferably be composed of multiple layers of fine filter mesh. A third air inlet 141 is provided on the second partition 14, and the third air inlet 141 is connected to the outer space of the filter ring 6.

[0047] It should be noted that the first air inlet 111 is preferably located on the same side as the third air inlet 141. When the dehumidification device 3 inside the cabinet 1 is working, the exhaust fan 34 draws air from inside the cabinet 1 into the dehumidification chamber 2 and sends the dried air back into the cabinet 1. At this time, the airflow can drive outside air into the cabinet 1, thus helping to dehumidify or cool the inside of the cabinet 1. Preferably, a backflow preventer valve can also be installed at the second air outlet 13 to restrict outside air from entering the cabinet 1 through the second air outlet 13. In other embodiments, fans can also be installed at the second air inlet 12 and the second air outlet 13, so that when the temperature inside the cabinet is high, starting the fans can draw outside air into the cabinet 1 for circulation, thus cooling the inside of the cabinet 1.

[0048] Outside air passes through the second air inlet 12, enters the inner side of the filter ring 6, then passes through the filter ring 6, reaches the outer side of the filter ring 6, flows along the air inlet cavity 5, and finally enters the cabinet 1 through the third air inlet 141. Optionally, dust filters can be installed at the first air inlet 111, the first air outlet 112, the second air inlet 12, the third air inlet 141, and the second air outlet 13.

[0049] Reference Figure 2 and Figure 4In this embodiment, a water storage box 15 is fixed on the side wall of the cabinet 1. The water storage box 15 is connected to the water receiving box 4 via a water pipe, allowing the water stored in the water receiving box 4 to be stored in the water storage box 15. The lower end of the water storage box 15 can be designed as a constricted opening, with a water outlet pipe 151 installed at the constriction. A water valve 152 is installed on the water outlet pipe 151 to control the water flow. The outlet of the water outlet pipe 151 is located above the filter ring 6. When the water valve 152 is opened, the water in the water storage box 15 can be discharged to rinse and clean the filter ring 6, maintaining its dust removal effect. A drain pipe 16 is also installed on the lower side wall of the cabinet 1. One end of the drain pipe 16 is connected to the air inlet chamber 5, and the other end extends out of the cabinet 1 to promptly discharge the rinsed water from the cabinet 1. A one-way valve or similar structure can be installed inside the drain pipe 16 to prevent water from outside the cabinet 1 from flowing back into the cabinet 1.

[0050] Preferably, a water level sensor 153 can be installed in the water storage box 15, and the water valve 152 can be an electric valve. The water level sensor 153 is connected to the water valve 152 via a signal. When the water level in the water storage box 15 rises to a certain level, the water valve 152 can be automatically controlled to open and flush the filter ring 6.

[0051] The implementation principle of an electrical control cabinet according to an embodiment of this application is as follows: When the humidity sensor 17 detects that the humidity inside the cabinet 1 has reached a preset value, the dehumidification device 3 is automatically activated. The dehumidification device 3 continuously draws air from inside the cabinet 1 into the dehumidification chamber 2, dehumidifies and dries the air, and then sends it back into the cabinet 1. The water condensed during the operation of the dehumidification device 3 is collected through the water receiving box 4 and stored in the water storage box 15. When the water level sensor 153 in the water storage box 15 detects that the water level has reached a preset position, the water valve 152 is automatically opened to discharge water to flush the filter ring 6 and clean the filter ring 6; the cleaned water is discharged from the cabinet 1 through the drain pipe 16.

[0052] By installing a dehumidifier 3 inside the electrical control cabinet, the air inside the cabinet can be dried, achieving effective control of the humidity inside the cabinet. At the same time, the installation of a second air inlet 12 and a filter ring 6 allows air from outside the cabinet 1 to be introduced into the cabinet 1, dehumidifying and cooling the interior of the cabinet 1 while filtering the air to prevent impurities and dust from affecting the electronic components inside the cabinet 1. The installation of a water storage box 15 allows for timely storage of the condensate generated by the dehumidifier 3, preventing condensate from accumulating inside the cabinet 1 and keeping the cabinet dry. The condensate stored in the water storage box 15 can also be used to rinse and clean the filter ring 6, helping to maintain the cleanliness of the filter ring 6 and improving the stability of the electrical control cabinet.

[0053] Example 2:

[0054] The difference between this embodiment and Embodiment 1 is that the filter ring 6 is fixed by a rotating connection. (Refer to...) Figure 4 and Figure 5 Specifically, one end of the positioning ring 61 is rotatably connected to the positioning ring 61 via a bearing or similar means. The positioning ring 61 is fixed to the side wall of the cabinet 1 by bolts or clips. A positioning groove is opened on the side of the second partition 14 facing the air inlet cavity 5, and the other end of the positioning ring 61 is rotatably inserted into the positioning groove. Meanwhile, in this embodiment, the center position of the water outlet pipe 151 below the water storage box 15 is staggered with the axis position of the filter ring 6 on the horizontal projection, that is, the pipe opening of the water outlet pipe 151 faces the side of the filter ring 6. When the water in the water storage box 15 falls along the water outlet pipe 151, the impact force of the water flow can drive the filter ring 6 to rotate, thereby circumferentially rinsing the filter ring 6. Compared with fixed-point rinsing, this can improve the cleaning effect of the filter ring 6.

[0055] Reference Figure 5 and Figure 6 Furthermore, in this embodiment, a central column 7 is also fixed on the second partition 14. The central column 7 extends inside the filter ring 6 and is preferably coaxially arranged. Cleaning bristles 71 are fixed on the side wall above the central column. The cleaning bristles 71 are evenly arranged along the length of the central column 7, and the ends of the cleaning bristles 71 abut against the inner side of the filter ring 6. When the filter ring 6 rotates under the force of water flow, the cleaning bristles 71 can continuously brush the inner side wall of the filter ring 6, thereby further improving the cleaning effect on the filter ring 6.

[0056] Furthermore, an impact ball 72 is installed on the lower side wall of the central column 7. The impact ball 72 is connected to the central column 7 by a connecting rope. In its natural state, there is a gap between the central ball and the inner side wall of the filter ring 6. Several protrusions 62 are arranged circumferentially on the inner side wall of the filter ring 6. When the filter ring 6 rotates and drives the protrusions 62 to rotate to the lower position, the impact ball 72 strikes the protrusions 62, thereby causing the filter ring 6 to vibrate intermittently. On the one hand, this helps to shake off impurities on the filter ring 6. On the other hand, after rinsing, the filter ring 6 can still rotate for a certain period of time. At this time, the impact ball 72 drives the filter ring 6 to vibrate, which helps to shake off the water droplets remaining on the filter ring 6.

[0057] Example 3:

[0058] The difference between this application and Embodiments 1 and 2 is that the air inlet cavity 5 is further provided with a ventilation duct 52 and a water pipe 51 to guide the airflow. (Refer to...) Figure 4 and Figure 5Specifically, a water pipe 51 and a ventilation pipe 52 are interconnected between the side wall of cabinet 1 and the second partition 14 by means of a partition. The water pipe 51 preferably extends vertically, and the ventilation pipe 52 preferably extends horizontally. A filter ring 6 is disposed at the connection between the water pipe 51 and the ventilation pipe 52. The outlet pipe 151 of the water storage box 15 is connected to the upper end of the water pipe 51, and the drain pipe 16 is connected to the lower end of the water pipe 51. The third air inlet 141 is connected to the ventilation pipe 52, and is preferably disposed at both ends of the ventilation pipe 52.

[0059] Reference Figure 4 and Figure 5 Furthermore, the second partition 14 is also provided with an opening and closing assembly 8 for closing the water pipe 51 or the ventilation pipe 52. The opening and closing assembly 8 includes two first baffles 81 rotatably disposed on both sides of the water pipe 51. With the filter ring 6 as a reference, the two first baffles 81 are located at the upper end of the filter ring 6. When the two first baffles 81 rotate towards each other to a horizontal position, their ends abut against each other, thereby closing the water pipe 51 at the upper end of the filter ring 6. The opening and closing assembly 8 also includes two second baffles 82 rotatably disposed on both sides of the water pipe 51. Correspondingly, the two second baffles 82 are located at the lower end of the filter ring 6, for closing the water pipe 51 at the lower end of the filter ring 6. When the two first baffles 81 rotate downwards and the two second baffles 82 rotate upwards, the opposing first baffles 81 and second baffles 82 abut against each other, thereby opening the two water pipes 51 on the upper and lower sides of the filter ring 6, and simultaneously closing the ventilation pipes 52 on the left and right sides of the filter ring 6.

[0060] The opening and closing assembly 8 also includes a power source 83 for driving the first baffle 81 and the second baffle 82 to rotate. The power source 83 can be a motor, which is fixed on the second partition 14. Correspondingly, a rotating shaft 811 is connected to both the first baffle 81 and the second baffle 82. The two ends of the rotating shaft 811 are rotatably connected to the side wall of the cabinet 1 and the side wall of the second plate, respectively. At the same time, the rotating shaft 811 passes through the second partition 14 and is connected to the output shaft of the motor. The motor is correspondingly arranged with the first baffle 81 and the second baffle 82, and the motor is preferably connected to the water level sensor 153.

[0061] Optionally, magnets (not shown in the figure) can be embedded in the ends of both the first baffle 81 and the second baffle 82. The magnets at the ends of the two first baffles 81 and the two second baffles 82 can attract each other, thereby increasing the stability of the connection between adjacent plates. At the same time, when the first baffle 81 and the second baffle 82 are flipped, the magnets embedded in the ends of the first baffle 81 and the second baffle 82 on the same side can also attract each other.

[0062] In its natural state, both the first baffle 81 and the second baffle 82 are horizontal. At this time, the ventilation duct 52 is opened, and the air entering from outside the cabinet 1 moves along the ventilation duct 52 and enters the cabinet 1 through the third air inlet 141. When the water level sensor 153 senses that the water level has reached the preset value, the motor is started first to drive the first baffle 81 and the second baffle 82 to rotate, thereby closing the ventilation duct 52 and opening the water pipe 51. Then the water valve 152 is opened, and the water storage box 15 discharges water to rinse the filter ring 6. After rinsing for a period of time, the motor is started again, and the first baffle 81 and the second baffle 82 are rotated back to close the ventilation duct and open the ventilation duct 52.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrical control cabinet, characterized in that: Includes a cabinet (1), a first partition (11) is provided on the top of the cabinet (1), the first partition (11) and the top of the cabinet (1) form a dehumidification chamber (2), the first partition (11) is provided with a first air inlet (111) and a first air outlet (112), and a dehumidification device (3) is provided on the first partition (11) between the first air inlet (111) and the first air outlet (112); The dehumidification device (3) includes a compressor (31), an evaporator (32) and a condenser (33), and a water collection box (4) is provided on the first partition (11) below the condenser (33). A second air inlet (12) is provided on one side wall of the cabinet (1), and a second air outlet (13) is provided on the other side wall; a second partition (14) is also provided on the inner side wall of the cabinet (1), and an air inlet cavity (5) is formed between the second partition (14) and the side wall of the cabinet (1); a filter ring (6) is provided between the side wall of the cabinet (1) and the second partition (14); the second air inlet (12) is connected to the inner space of the filter ring (6); a third air inlet (141) is provided on the second partition (14), and the third air inlet (141) is connected to the outer space of the filter ring (6); the filter ring (6) is fixed by a rotating connection. A water storage box (15) is provided on the side wall of the cabinet (1). The water storage box (15) is connected to the water receiving box (4) by a water pipe. A water outlet pipe (151) is provided at the lower end of the water storage box (15). A water valve (152) for controlling the water outlet is provided at the water outlet pipe (151). The opening of the water outlet pipe (151) is located above the filter ring (6). A drain pipe (16) is provided at the lower end of the cabinet (1). The drain pipe (16) is connected to the air inlet chamber (5). A central column (7) is provided on the second partition (14). The central column (7) is coaxially arranged inside the filter ring (6). Cleaning bristles (71) are provided on the upper side wall of the central column (7). The cleaning bristles (71) are evenly arranged along the length direction of the central column (7). The ends of the cleaning bristles (71) abut against the inner side wall of the filter ring (6).

2. The electrical control cabinet according to claim 1, characterized in that: The dehumidification device (3) also includes a fan (34) for drawing air from the cabinet into the dehumidification chamber (2) through the first air inlet (111). The exhaust port of the compressor (31) is connected to the inlet of the condenser (33). The outlet of the condenser (33) is connected to the inlet of the evaporator (32) through a throttling element. The outlet of the evaporator (32) is connected to the suction port of the compressor (31).

3. The electrical control cabinet according to claim 1, characterized in that: A humidity sensor (17) is installed inside the cabinet (1), and the humidity sensor (17) is connected to the dehumidification device (3).

4. An electrical control cabinet according to claim 1, characterized in that: A water level sensor (153) is provided on the side wall of the water storage box (15), and the water level sensor (153) is connected to the water valve (152).

5. An electrical control cabinet according to any one of claims 1-3, characterized in that: One end of the filter ring (6) is rotatably connected to a positioning ring (61), the positioning ring (61) is fixed on the side wall of the cabinet (1), the second partition (14) is provided with a positioning groove, the other end of the filter ring (6) is rotatably inserted into the positioning groove, and the center position of the water outlet pipe (151) is staggered relative to the axis position of the filter ring (6) on the horizontal projection.

6. An electrical control cabinet according to claim 5, characterized in that: An impact ball (72) is provided on the lower side wall of the central column (7). The impact ball (72) is connected to the central column (7) by a connecting rope. Several protrusions (62) are provided on the inner side wall of the filter ring (6). When the filter ring (6) rotates, the impact ball (72) can collide with the protrusions (62).

7. An electrical control cabinet according to claim 3, characterized in that: The air inlet cavity (5) is provided with a water pipe (51) and a ventilation pipe (52) connected to the water pipe (51). The filter ring (6) is located at the connection between the water pipe (51) and the ventilation pipe (52). The water outlet pipe (151) of the water storage box (15) is connected to the upper end of the water pipe (51). The drain pipe (16) is connected to the lower end of the water pipe (51). The third air inlet (141) is connected to the ventilation pipe (52).

8. An electrical control cabinet according to claim 7, characterized in that: The second partition (14) is also provided with an opening and closing assembly (8) for closing the water pipe (51) or the ventilation pipe (52). The opening and closing assembly (8) includes two first baffles (81) and two second baffles (82) that are rotatably arranged on both sides of the water pipe (51), and a power source (83) for controlling the rotation of the first baffles (81) and the second baffles (82). The two first baffles (81) are arranged above the filter ring (6), and the two second baffles (82) are arranged below the filter ring (6). When the first baffles (81) and the second baffles (82) are both in a horizontal state, the water pipe (51) can be closed. When the first baffles (81) and the second baffles (82) are both flipped to a vertical state, the ventilation pipe (52) can be closed.

9. An electrical control cabinet according to claim 8, characterized in that: Magnets are provided at the ends of the first baffle (81) and the second baffle (82). The magnets at the ends of the two first baffles (81) and the two second baffles (82) can attract each other. At the same time, the magnets at the ends of the first baffle (81) and the second baffle (82) located on the same side can attract each other.

10. An electrical control cabinet according to claim 9, characterized in that: The power source (83) is an electric motor, which is mounted on the second partition (14). Both the first baffle (81) and the second baffle (82) are provided with a rotating shaft (811). The rotating shaft (811) rotates through the second partition (14) and is connected to the output shaft of the electric motor.

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