A sealed, dust-proof and actively cooled control cabinet

Abstract

The present invention discloses a sealed, dust-proof and actively cooled control cabinet, which relates to the technical field of control cabinets. It includes a housing, on which an air inlet and an air outlet are provided. Electrical components are installed on the housing between the air inlet and the air outlet. A driving motor is installed in the air inlet. A filter plate, a cam and a scroll plate are sequentially installed on the output shaft of the driving motor. A fixed cylinder and a sliding cylinder are installed between the cam and the scroll plate. A refrigeration plate is installed in the fixed cylinder. A flexible film is installed on one side of the refrigeration plate. A thermoplate A is installed in the air outlet; the filter plate realizes primary dust removal, the cooperation between the sliding cylinder and the scroll plate realizes secondary dust removal, the cam realizes the inhalation and transportation of air, and the thermoplate A detects the temperature of the air outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of control cabinets, and specifically to a sealed, dust-proof and actively cooled control cabinet. Background Art

[0002] A control cabinet is a device for centralized control and protection of electrical equipment, usually constructed based on a metal cabinet. It can be used to centrally control and monitor various electrical equipment to ensure its normal operation and safety. Control cabinets are widely used in factories, power stations, buildings and other electrical systems. The design and functions of control cabinets are diverse and can meet the needs of different fields. For example, an industrial resistance furnace temperature control cabinet is used to control the temperature of an industrial resistance furnace to ensure the stability and safety of the process. The control cabinet housing for textile machinery electrical drive and control is suitable for the textile industry, providing stable power supply and equipment protection. In addition, there is a thyristor electric furnace control cabinet with a beautiful and lightweight housing, offering a variety of instrument specifications for optional installation and having additional functions such as motor control and alarm power-off control to ensure the stable operation of the power system. The existing control cabinets mainly have the following problems: (1) The air inlet of the control cabinet is not dust-removed, resulting in dust accumulation inside the control cabinet and burning out of the circuit; (2) The inside of the control cabinet is not cooled, reducing the service life of electrical components. Summary of the Invention

[0003] The purpose of the present invention is to provide a sealed, dust-proof and actively cooled control cabinet to solve the problems raised in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A sealed, dust-proof and actively cooled control cabinet, including a housing, an air inlet and an air outlet are provided on the housing, electrical components are installed on the housing between the air inlet and the air outlet, a driving motor is installed in the air inlet, a filter plate, a cam and a scroll plate are sequentially installed on the output shaft of the driving motor, a fixed cylinder and a sliding cylinder are installed between the cam and the scroll plate, a refrigeration plate is installed in the fixed cylinder, a flexible film is installed on one side of the refrigeration plate, and a thermoplate A is installed in the air outlet;

[0005] The filter plate realizes primary dust removal, the sliding cylinder and the scroll plate cooperate to realize secondary dust removal, the cam realizes the inhalation and transportation of air, and the thermoplate A detects the temperature of the air outlet.

[0006] The fixed cylinder is installed on the outer shell. The fixed cylinder is located outside the scroll plate. The sliding cylinder is slidably installed inside the fixed cylinder. The fixed cylinder limits the position of the sliding cylinder. The flexible membrane is made of a flexible structure in the shape of a corrugated pipe. A number of folds are provided on the flexible membrane. One side of the flexible membrane is installed on the sliding cylinder, and the other side of the flexible membrane is installed on the fixed cylinder. The refrigeration plate is installed on the fixed cylinder outside the flexible membrane. There are multiple groups of the refrigeration plates, and multiple groups of the refrigeration plates are all electrically connected to the control system.

[0007] A negative electrode plate is arranged inside the sliding cylinder, and a positive electrode plate is arranged on the inner wall of the scroll plate. The negative electrode plate and the positive electrode plate are respectively connected to the negative pole and the positive pole of the power supply through wires.

[0008] One side of the cam is rotatably installed with a first rotating plate through a bearing. The inside of the first rotating plate is rotatably installed on the output shaft of the driving motor through a bearing. The other side of the cam is rotatably installed with a second rotating plate through a bearing. A first spring is connected to the first rotating plate. One end of the first spring is installed on the filter plate. The second rotating plate is connected to the sliding cylinder. The first spring is electrically connected to the control system;

[0009] The cam is slidably installed on the output shaft of the driving motor through a spline. The driving motor is installed on the outer shell. A second spring is sleeved on the output shaft of the driving motor near the cam. One end of the second spring abuts against the cam, and the second spring realizes the reset of the cam;

[0010] A number of continuous protrusions and grooves are provided on the opposite sides of the cam and the outer shell. The protrusions are located on one side of the grooves.

[0011] Multiple groups of input ports are provided on the cam between the first rotating plate and the second rotating plate. A communication port is provided on one side of the scroll plate. An output port penetrating the outer shell is provided on the other side of the scroll plate. Switch valves are installed in the input ports, the communication port and the output port. A flow sensor is built in the switch valve. The switch valve and the flow sensor are both electrically connected to the control system;

[0012] Multiple groups of input ports are communicated with the external atmosphere through the filter plate and the air inlet. The communication port communicates the input port and the output port. The output port is communicated with the upper side of the electrical component. The scroll plate is installed on the outer shell.

[0013] When the staff presses the start button on the control panel, the control system controls the driving motor to drive the cam to rotate, so that the protrusions on the cam are in staggered contact with the protrusions and grooves on the outer shell.

[0014] When the protrusion on the cam gradually comes into contact with the groove on the housing, the encoder inside the drive motor feeds data back to the control system. The control system opens the switching valve in the input port, closes the switching valve in the communication port, and connects the two semiconductors on the refrigeration plate to the circuit. The second spring is released and pushes the cam to move leftward on the output shaft of the drive motor. The cam pulls the sliding cylinder to move leftward synchronously through the second rotating plate, increasing the volume of the first chamber formed on one side of the cam, inside the sliding cylinder, inside the flexible membrane, and on one side of the scroll plate. External air passes through the filter screen and is inhaled into the input port. Large particulate dust in the air deposits on the filter screen, achieving primary dust removal. Small particulate dust and air enter the first chamber through the input port; the sliding cylinder stretches the bellows-shaped flexible membrane synchronously, unfolding the folds on the flexible membrane to increase the refrigeration area and improve the cooling effect. The refrigeration plate cools the air in the first chamber through the flexible membrane; thus, the cam moves leftward to inhale external air into the first chamber and perform cooling treatment to form the required low-temperature air, which is used to cool the electrical components.

[0015] When the protrusion on the cam gradually comes into contact with the protrusion on the housing, the encoder inside the drive motor feeds data back to the control system. The control system first connects the negative electrode plate to the circuit, closes the switching valve in the input port, and cuts off the power supply to the two semiconductors on the refrigeration plate. Then it opens the switching valve in the communication port. While the cam is forced to move rightward, it compresses the second spring. The rightward movement of the cam reduces the volume of the first chamber. The negative electrode plate simultaneously discharges the dust and air in the first chamber, forming a corona and ionizing the air into equal amounts of positive and negative ions. The positive ions are absorbed by the negative electrode plate, while the negative ions remain in the air and come into contact with the dust. The dust absorbs negative charges and becomes negatively charged. The low-temperature air and negatively charged dust in the first chamber are transported to the communication port and then through the communication port to the scroll plate.

[0016] Through the continuous rotation of the cam, the protrusions on the cam alternately come into contact with the protrusions and grooves on the housing, continuously inhaling external air into the first chamber for cooling and ionization.

[0017] When the dust and low-temperature air enter the scroll plate through the communication port, the switching valve in the communication port feeds the flow signal back to the control system. The control system connects the positive electrode plate to the circuit. The positive electrode plate attracts the negatively charged dust, causing the dust to deposit on the positive electrode plate. While the remaining dust and low-temperature air flow in the scroll plate, their directions change continuously. Due to the different inertial forces of the dust and air, the dust and air collide with the inner wall of the scroll plate to achieve separation. The dust deposits inside the scroll plate, achieving secondary dust removal. The low-temperature air is discharged from the output port above the electrical components.

[0018] When the low-temperature air is discharged from the outlet, the switching valve in the outlet feeds the flow data back to the control system. The control system controls the exhaust fan motor to drive the transmission gear to rotate. Through two sets of transmission gears and transmission belts, the drive shaft is driven to rotate. The drive shaft drives the fan blades to rotate. The low-temperature air contacts the electrical components downward. The electrical components exchange heat with the low-temperature air. The temperature of the air after heat exchange rises. The air after heat exchange contacts the fan blades. The thermopile A on the fan blades detects the temperature of the air after heat exchange and feeds the temperature data back to the control system. The fan blades transport the air after heat exchange to the air outlet and discharge it.

[0019] A drive shaft is installed in the air outlet. Both sides of the drive shaft are rotatably installed on the housing through bearings. A transmission gear is installed on the drive shaft. The outside of the transmission gear meshes with a transmission belt. The inside of the transmission belt meshes with another set of transmission gears. The output shaft of the exhaust fan motor is installed in the middle of the other set of transmission gears. The exhaust fan motor is installed on the housing. Multiple sets of fan blades are installed on the drive shaft. The exhaust fan motor drives the transmission gear to rotate. The transmission gear drives another set of transmission gears to rotate through the transmission belt. The other set of transmission gears drives the drive shaft to rotate. The drive shaft drives the fan blades to rotate. The fan blades drive the air around the electrical components to blow out from the air outlet, realizing the circulation of the air.

[0020] Multiple sets of thermopile A are installed on the multiple sets of fan blades. Multiple sets of thermopile B are installed in the outlet. The multiple sets of thermopile A and the multiple sets of thermopile B correspond one by one. Two different materials of semiconductors and metal plates are provided on both the thermopile A, thermopile B and the refrigeration plate. One end of the two different materials of semiconductors is connected to the metal plate. The two semiconductors on the thermopile A and the two semiconductors on the thermopile B are connected by wires. One of the wires is connected to the control system. The two semiconductors on the refrigeration plate are electrically connected to the control system through wires;

[0021] The two semiconductors and the metal plate on the thermopile A are the hot ends of the Seebeck effect. The two semiconductors and the metal plate on the thermopile B are the cold ends of the Seebeck effect. Since the thermopile A is installed on the fan blades in the air outlet, and the thermopile B is located in the outlet through which the low-temperature air passes, the temperature of the hot end is higher than that of the cold end. The hot end and the cold end generate an electric current through the Seebeck effect and transmit it to the control system. The control system first detects and processes the current, and then obtains the temperature of the hot end, that is, the temperature of the air in the air outlet.

[0022] When the detected air temperature is higher than the set temperature, the control system adjusts the rotation speeds of the exhaust fan motor and the drive motor according to the temperature data of the air outlet, and speeds up the cooling speed of the cooling plate, so as to achieve rapid inhalation of external air, rapid cooling of the air by the cooling plate, and rapid discharge of the air after heat exchange, making the continuous low-temperature air contact with the electrical components, achieving active heat dissipation while achieving the purpose of rapid cooling; afterwards, the control system processes the current through rectification, transformation, etc. and uses it for cooling the cooling plate. When the control system detects that the generated current is small, the control system directly performs cooling treatment through the cooling plate.

[0023] Multiple groups of filter meshes are installed on the filter plate. The filter meshes block large-particle dust outside to achieve dust-proof treatment. A sliding groove is provided on the outer shell outside the filter plate. The filter plate slides in the sliding groove, and the sliding groove limits and supports the filter plate.

[0024] A first chamber is formed between one side of the cam, the inside of the sliding cylinder, the inside of the flexible membrane, and one side of the scroll plate.

[0025] A control panel is installed on the outer shell. A control system is arranged inside the control panel. Encoders and pressure sensors are built in both the drive motor and the exhaust fan motor. The outer shell seals the electrical components to prevent dust from entering. Air can only enter through the air inlet and be discharged through the air outlet.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. Secondary dust removal to ensure the safe use of electrical components. External air is inhaled into the input port after passing through the filter mesh. Large-particle dust in the air deposits on the filter mesh to achieve primary dust removal. The control system connects the positive electrode plate to the circuit. The positive electrode plate attracts negatively charged dust, making the dust deposit on the positive electrode plate. When the remaining dust and low-temperature air flow in the scroll plate, their directions change continuously. Due to the different inertial forces of dust and air, the dust and air collide with the inner wall of the scroll plate to achieve separation, and the dust deposits in the scroll plate to achieve secondary dust removal, ensuring the safe use of electrical components.

[0028] 2. Using low-temperature air to cool electrical components and extending the service life of electrical components. Air enters the first chamber through the input port. The sliding cylinder synchronously stretches the bellows-shaped flexible membrane, causing the folds on the flexible membrane to unfold, so as to increase the cooling area and improve the cooling effect. The cooling plate cools the air in the first chamber through the flexible membrane to form low-temperature air. The low-temperature air contacts the electrical components downward, and the electrical components and the low-temperature air perform heat exchange treatment. The temperature of the air after heat exchange rises, and the fan blades transport the air after heat exchange to the air outlet for discharge, which can extend the service life of electrical components.

[0029] 3. The filter screen impacts to remove dust to ensure the filtering effect of the filter screen. The first spring pulls the filter plate to slide left and right in the sliding groove, and the left and right sliding of the filter plate impacts on the outer shell, causing the dust on the filter screen to fall, ensuring a good filtering effect of the filter screen and preventing the filter screen from being blocked. Brief Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is Figure 1 the front view after removing part of the outer shell;

[0032] Figure 3 is Figure 2 the structural schematic diagram of the upper side part in

[0033] Figure 4 is Figure 3 the longitudinal sectional view after being installed with the outer shell;

[0034] Figure 5 is Figure 4 the partial enlarged view of area A in

[0035] Figure 6 is Figure 4 the partial enlarged view of area B in

[0036] Figure 7 is the internal structural schematic diagram of the air outlet;

[0037] Figure 8 is the internal structural schematic diagram of the vortex plate (the arrow direction is the air flow direction).

[0038] In the figure: 1, control panel; 11, outer shell; 12, air inlet; 121, filter screen; 13, air outlet; 14, electrical components; 15, input port; 16, output port; 161, temperature difference plate B; 17, communication port; 18, exhaust fan motor; 181, transmission gear; 182, transmission belt; 19, transmission shaft; 2, drive motor; 21, filter plate; 22, cam; 221, first rotating plate; 222, second rotating plate; 23, sliding cylinder; 231, fixed cylinder; 232, negative electrode plate; 24, vortex plate; 241, positive electrode plate; 25, first spring; 251, second spring; 26, refrigeration plate; 27, flexible film; 28, first chamber; 3, temperature difference plate A; 31, fan blade. Detailed Embodiment

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment: As Figures 1-8 shown, the present invention provides a technical solution for a sealed, dust-proof and actively cooled control cabinet, including a housing 11, on which an air inlet 12 and an air outlet 13 are provided. An electrical component 14 is installed on the housing 11 between the air inlet 12 and the air outlet 13. A driving motor 2 is installed in the air inlet 12. A filter plate 21, a cam 22 and a scroll plate 24 are successively installed on the output shaft of the driving motor 2. A fixed cylinder 231 and a sliding cylinder 23 are installed between the cam 22 and the scroll plate 24. A refrigeration plate 26 is installed in the fixed cylinder 231. A flexible film 27 is installed on one side of the refrigeration plate 26. A temperature difference plate A3 is installed in the air outlet 13. The filter plate 21 realizes primary dust removal, the cooperation between the sliding cylinder 23 and the scroll plate 24 realizes secondary dust removal, the cam 22 realizes the inhalation and transportation of air, and the temperature difference plate A3 detects the temperature of the air outlet 13. A first chamber 28 is formed between one side of the cam 22, the inside of the sliding cylinder 23, the inside of the flexible film 27 and one side of the scroll plate 24. A control panel 1 is installed on the housing 11, and a control system is arranged inside the control panel 1. Multiple groups of filter meshes 121 are installed on the filter plate 21. A sliding groove is provided on the housing 11 outside the filter plate 21, and the filter plate 21 slides in the sliding groove, and the sliding groove limits and supports the filter plate 21.

[0041] A first rotating plate 221 is rotatably installed on one side of the cam 22 through a bearing, the inside of the first rotating plate 221 is rotatably installed on the output shaft of the driving motor 2 through a bearing, a second rotating plate 222 is rotatably installed on the other side of the cam 22 through a bearing, a first spring 25 is connected to the first rotating plate 221, one end of the first spring 25 is installed on the filter plate 21, the second rotating plate 222 is connected to the sliding cylinder 23, and the first spring 25 is electrically connected to the control system; the cam 22 is slidably installed on the output shaft of the driving motor 2 through a spline, the driving motor 2 is installed on the housing 11, and a second spring 251 is sleeved on the output shaft of the driving motor 2 close to the cam 22, one end of the second spring 251 abuts against the cam 22, and the second spring 251 realizes the reset of the cam 22; several continuous protrusions and grooves are provided on the opposite sides of the cam 22 and the housing 11, and the protrusions are located on one side of the grooves.

[0042] The fixed cylinder 231 is installed on the outer shell 11. The fixed cylinder 231 is located outside the scroll plate 24. The sliding cylinder 23 is slidably installed inside the fixed cylinder 231. The fixed cylinder 231 limits the position of the sliding cylinder 23. The flexible membrane 27 is made of a flexible corrugated structure. A number of folds are provided on the flexible membrane 27. One side of the flexible membrane 27 is installed on the sliding cylinder 23, and the other side of the flexible membrane 27 is installed on the fixed cylinder 231. The refrigeration plate 26 is installed on the fixed cylinder 231 outside the flexible membrane 27. There are multiple groups of refrigeration plates 26, and multiple groups of refrigeration plates 26 are all electrically connected to the control system; a negative electrode plate 232 is arranged inside the sliding cylinder 23, and a positive electrode plate 241 is arranged on the inner wall of the scroll plate 24. The negative electrode plate 232 and the positive electrode plate 241 are respectively connected to the negative electrode and the positive electrode of the power supply through wires.

[0043] When the cam 22 moves left and right, the first spring 25 moves left and right following the cam 22 through the first rotating plate 221. The bearings installed inside and outside the first rotating plate 221 can ensure that the first spring 25 does not rotate following the cam 22. The first spring 25 pulls the filter plate 21 to slide left and right in the sliding groove. The filter plate 21 slides left and right and impacts on the outer shell 11, causing the dust on the filter net 121 to fall, ensuring a good filtering effect of the filter net 121 and preventing the filter net 121 from being blocked;

[0044] When the drive motor 2 does not work, the second spring 251 pushes the cam 22 to the leftmost side. The protrusion on the cam 22 contacts the groove on the outer shell 11. The staff continuously energizes and de-energizes the first spring 25 through the control system. After the first spring 25 is energized, each turn is gradually shortened by the mutually attracting magnetic field. The first spring 25 pulls the filter plate 21 to move to the right. After that, when the first spring 25 is de-energized, it pushes the filter plate 21 to move to the left under the action of its own elastic force. The elastic force of the first spring 25 is less than the elastic force of the second spring 251. Therefore, the first spring 25 cannot push the cam 22 to move. By continuously energizing and de-energizing the first spring 25 through the control system, it is realized that the filter plate 21 impacts on the outer shell 11 through the sliding groove, causing the dust on the filter net 121 to fall, ensuring the filtering effect of the filter net 121. The first rotating plate 221 and the second rotating plate 222 can respectively ensure that when the cam 22 rotates, the first spring 25 and the sliding cylinder 23 do not rotate following it, but only move following it.

[0045] There are multiple groups of input ports 15 provided on the cam 22 between the first rotating plate 221 and the second rotating plate 222. A communication port 17 is provided on one side of the scroll plate 24, and an output port 16 penetrating the housing 11 is provided on the other side of the scroll plate 24. Switch valves are installed in the input port 15, the communication port 17, and the output port 16. A flow sensor is built into the switch valve. Both the switch valve and the flow sensor are electrically connected to the control system; the multiple groups of input ports 15 are communicated with the external atmosphere through the filter plate 21 and the air inlet 12. The communication port 17 connects the input port 15 and the output port 16. The output port 16 is communicated with the upper side of the electrical component 14. The scroll plate 24 is installed on the housing 11.

[0046] A transmission shaft 19 is installed in the air outlet 13. Both sides of the transmission shaft 19 are rotatably installed on the housing 11 through bearings. A transmission gear 181 is installed on the transmission shaft 19. The outer side of the transmission gear 181 is engaged with a transmission belt 182. The inner side of the transmission belt 182 is engaged with another group of transmission gears 181. The middle of the other group of transmission gears 181 is installed with the output shaft of the exhaust fan motor 18. The exhaust fan motor 18 is installed on the housing 11. Multiple groups of fan blades 31 are installed on the transmission shaft 19. Both the drive motor 2 and the exhaust fan motor 18 are built with encoders and pressure sensors. The exhaust fan motor 18 drives the transmission gear 181 to rotate. The transmission gear 181 drives another group of transmission gears 181 to rotate through the transmission belt 182. The other group of transmission gears 181 drives the transmission shaft 19 to rotate. The transmission shaft 19 drives the fan blades 31 to rotate. The fan blades 31 drive the air around the electrical component 14 to be blown out from the air outlet 13 to the atmosphere, realizing the air circulation.

[0047] Multiple groups of thermopiles A3 are installed on the multiple groups of fan blades 31. Multiple groups of thermopiles B161 are installed in the output port 16. The multiple groups of thermopiles A3 and the multiple groups of thermopiles B161 correspond one by one. Two different materials of semiconductors and metal plates are provided on both the thermopile A3, the thermopile B161, and the refrigeration plate 26. One end of the two different materials of semiconductors is connected to the metal plate. The two semiconductors on the thermopile A3 and the two semiconductors on the thermopile B161 are connected by a wire. One of the wires is connected to the control system. The two semiconductors on the refrigeration plate 26 are electrically connected to the control system through a wire. The two semiconductors and the metal plate on the thermopile A3 are the hot ends of the Seebeck effect. The two semiconductors and the metal plate on the thermopile B161 are the cold ends of the Seebeck effect. Since the thermopile A3 is installed on the fan blades 31 in the air outlet 13, and the thermopile B161 is located in the output port 16 where the low-temperature air passes through, the temperature of the hot end is higher than that of the cold end. The hot end and the cold end generate an electric current through the Seebeck effect and transmit it to the control system. The control system first detects and processes the current, and then obtains the temperature of the hot end, that is, the air temperature in the air outlet 13.

[0048] When the detected air temperature is higher than the set temperature, the control system adjusts the rotation speeds of the exhaust fan motor 18 and the drive motor 2 according to the temperature data of the air outlet 13, and speeds up the cooling speed of the cooling plate 26, so as to achieve rapid inhalation of external air, rapid cooling of the air by the cooling plate 26, and rapid discharge of the air after heat exchange, enabling the continuous low-temperature air to contact the electrical components 14 to achieve the purpose of rapid cooling; afterwards, the control system processes the current through rectification and transformation and other processes and uses it for the cooling of the cooling plate 26. When the control system detects that the generated current is small, the control system directly conducts cooling treatment through the cooling plate 26.

[0049] Working principle: The operator presses the start button on the control panel 1, and the control system controls the drive motor 2 to drive the cam 22 to rotate, so that the protrusions on the cam 22 come into staggered contact with the protrusions and grooves on the housing 11.

[0050] When the protrusion on the cam 22 gradually comes into contact with the groove on the housing 11, the encoder inside the drive motor 2 feeds back data to the control system. The control system opens the switching valve in the input port 15, closes the switching valve in the communication port 17, and connects the two semiconductors on the cooling plate 26 to the circuit. The second spring 251 is released and pushes the cam 22 to move leftward on the output shaft of the drive motor 2. The cam 22 pulls the sliding cylinder 23 to move leftward synchronously through the second rotating plate 222, so that the volume of the first chamber 28 formed on one side of the cam 22, inside the sliding cylinder 23, inside the flexible membrane 27, and on one side of the scroll plate 24 becomes larger. The external air passes through the filter screen 121 and is inhaled into the input port 15. The large-particle dust in the air is deposited on the filter screen 121 to achieve primary dust removal, and the small-particle dust and air enter the first chamber 28 through the input port 15; the sliding cylinder 23 synchronously stretches the bellows-shaped flexible membrane 27 to unfold the folds on the flexible membrane 27 to increase the cooling area and improve the cooling effect. The cooling plate 26 cools the air in the first chamber 28 through the flexible membrane 27; therefore, the leftward movement of the cam 22 is to inhale the external air into the first chamber 28 and perform cooling treatment to form the required low-temperature air, which is used for cooling the electrical components 14.

[0051] When the protrusion on the cam 22 gradually contacts the protrusion on the housing 11, the encoder inside the drive motor 2 feeds data back to the control system. The control system first connects the negative electrode plate 232 to the circuit, closes the switching valve in the input port 15, and cuts off the power supply to the two semiconductors on the refrigeration plate 26. Then, it opens the switching valve in the communication port 17. While the cam 22 is forced to move to the right, it compresses the second spring 251. As the cam 22 moves to the right, the volume of the first chamber 28 becomes smaller. At the same time, the negative electrode plate 232 discharges electricity to the dust and air in the first chamber 28, forming a corona, which ionizes the air into equal amounts of positive and negative ions. The positive ions are absorbed by the negative electrode plate 232, while the negative ions remain in the air and come into contact with the dust. The dust absorbs the negative charge and becomes negatively charged. The low-temperature air and the negatively charged dust in the first chamber 28 are transported into the communication port 17 and then through the communication port 17 to the scroll plate 24.

[0052] Through the continuous rotation of the cam 22, the protrusions on the cam 22 alternately contact the protrusions and grooves on the housing 11, continuously sucking external air into the first chamber 28 for cooling and ionization.

[0053] When the dust and low-temperature air enter the scroll plate 24 through the communication port 17, the switching valve in the communication port 17 feeds the flow signal back to the control system. The control system connects the positive electrode plate 241 to the circuit. The positive electrode plate 241 attracts the negatively charged dust, causing the dust to deposit on the positive electrode plate 241. While the remaining dust and low-temperature air flow in the scroll plate 24, their directions change continuously. Due to the different inertial forces of the dust and the air, the dust and the air collide with the inner wall of the scroll plate 24 to achieve separation. The low-temperature air is discharged from the output port 16 above the electrical component 14.

[0054] When the low-temperature air is discharged from the output port 16, the switching valve in the output port 16 feeds the flow data back to the control system. The control system controls the exhaust fan motor 18 to drive the transmission gear 181 to rotate. Through the two sets of transmission gears 181 and the transmission belt 182, the transmission shaft 19 is driven to rotate. The transmission shaft 19 drives the fan blade 31 to rotate. The low-temperature air contacts the electrical component 14 downward. The electrical component 14 exchanges heat with the low-temperature air. After heat exchange, the temperature of the air rises. The air after heat exchange contacts the fan blade 31. The temperature difference plate A3 on the fan blade 31 detects the temperature of the air after heat exchange and feeds the temperature data back to the control system. The fan blade 31 transports the air after heat exchange to the air outlet 13 for discharge.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A sealed and dust-proof active heat dissipation type control cabinet, characterized in that: It includes a housing (11), on which an air inlet (12) and an air outlet (13) are provided. An electrical component (14) is installed on the housing (11) between the air inlet (12) and the air outlet (13). A driving motor (2) is installed in the air inlet (12). A filter plate (21), a cam (22) and a scroll plate (24) are successively installed on the output shaft of the driving motor (2). A fixed cylinder (231) and a sliding cylinder (23) are installed between the cam (22) and the scroll plate (24). A refrigeration plate (26) is installed in the fixed cylinder (231). A flexible film (27) is installed on one side of the refrigeration plate (26). A temperature difference plate A (3) is installed in the air outlet (13). The filter plate (21) realizes primary dust removal. The cooperation between the sliding cylinder (23) and the scroll plate (24) realizes secondary dust removal. The cam (22) realizes the inhalation and transportation of air. The temperature difference plate A (3) detects the temperature of the air outlet (13). The flexible film (27) is made of a corrugated flexible structure. A number of folds are provided on the flexible film (27). One side of the flexible film (27) is installed on the sliding cylinder (23), and the other side of the flexible film (27) is installed on the fixed cylinder (231). The refrigeration plate (26) is installed on the fixed cylinder (231) outside the flexible film (27). There are multiple groups of the refrigeration plates (26), and multiple groups of the refrigeration plates (26) are all electrically connected to the control system. One side of the cam (22) is rotatably installed with a first rotating plate (221) through a bearing. The inside of the first rotating plate (221) is rotatably installed on the output shaft of the driving motor (2) through a bearing. The other side of the cam (22) is rotatably installed with a second rotating plate (222) through a bearing. A first spring (25) is connected to the first rotating plate (221). One end of the first spring (25) is installed on the filter plate (21). A number of continuous protrusions and grooves are provided on the opposite sides of the cam (22) and the housing (11), and the protrusions are located on one side of the grooves. The fixed cylinder (231) is installed on the housing (11). The fixed cylinder (231) is located outside the scroll plate (24). The sliding cylinder (23) is slidably installed inside the fixed cylinder (231), and the fixed cylinder (231) limits the position of the sliding cylinder (23).

2. The sealed dust-proof and actively cooled control cabinet according to claim 1, characterized in that: A negative electrode plate (232) is provided inside the sliding cylinder (23). A positive electrode plate (241) is provided on the inner wall of the scroll plate (24). The negative electrode plate (232) and the positive electrode plate (241) are respectively connected to the negative pole and the positive pole of the power supply through wires.

3. The sealed dust-proof and actively cooled control cabinet according to claim 2, wherein: The second rotating plate (222) is connected to the sliding cylinder (23), and the first spring (25) is electrically connected to the control system. The cam (22) is slidably mounted on the output shaft of the drive motor (2) by splines. The drive motor (2) is mounted on the housing (11). A second spring (251) is sleeved on the output shaft of the drive motor (2) near the cam (22), and one end of the second spring (251) abuts against the cam (22).

4. A sealed dust-proof and actively cooled control cabinet according to claim 3, characterized in that: Multiple groups of input ports (15) are provided on the cam (22) between the first rotating plate (221) and the second rotating plate (222). A communication port (17) is provided on one side of the scroll plate (24), and an output port (16) penetrating the housing (11) is provided on the other side of the scroll plate (24). Switch valves are installed in the input port (15), the communication port (17), and the output port (16). A flow sensor is built in the switch valve. The switch valve and the flow sensor are both electrically connected to the control system; The multiple groups of input ports (15) are communicated with the external atmosphere through the filter plate (21) and the air inlet (12). The communication port (17) connects the input port (15) and the output port (16). The output port (16) is communicated with the upper side of the electrical component (14). The scroll plate (24) is installed on the housing (11).

5. The sealed dust-proof and actively cooled control cabinet according to claim 4, characterized in that: A transmission shaft (19) is installed in the air outlet (13). Both sides of the transmission shaft (19) are rotatably mounted on the housing (11) through bearings. A set of transmission gears (181) is installed on the transmission shaft (19). A transmission belt (182) is meshed with the outside of the set of transmission gears (181). Another set of transmission gears (181) is meshed with the inner side of the transmission belt (182). The middle of the other set of transmission gears (181) is installed with the output shaft of the exhaust fan motor (18). The exhaust fan motor (18) is installed on the housing (11). Multiple groups of fan blades (31) are installed on the transmission shaft (19).

6. The sealed dust-proof and actively heat-dissipating control cabinet according to claim 5, wherein: Multiple groups of temperature difference plates A (3) are installed on the multiple groups of fan blades (31). Multiple groups of temperature difference plates B (161) are installed in the output port (16). The multiple groups of temperature difference plates A (3) and the multiple groups of temperature difference plates B (161) correspond one by one. Two different materials of semiconductors and metal plates are provided on the temperature difference plate A (3), the temperature difference plate B (161), and the refrigeration plate (26). One ends of the two different materials of semiconductors are both connected to the metal plate. The two semiconductors on the temperature difference plate A (3) and the two semiconductors on the temperature difference plate B (161) are connected by wires. One of the wires is connected to the control system. The two semiconductors on the refrigeration plate (26) are electrically connected to the control system through wires.

7. The sealed and dust-proof active heat dissipation type control cabinet according to claim 6, characterized in that: Multiple groups of filter meshes (121) are installed on the filter plate (21). A sliding groove is provided on the housing (11) outside the filter plate (21). The filter plate (21) slides in the sliding groove, and the sliding groove positions and supports the filter plate (21).

8. A sealed dust-proof and actively cooled control cabinet according to claim 7, characterized in that: A first chamber (28) is formed between the other side of the cam (22), the inside of the sliding cylinder (23), the inside of the flexible membrane (27), and one side of the scroll plate (24).

9. The sealed and dust-proof active heat dissipation type control cabinet according to claim 8, wherein: A control panel (1) is installed on the housing (11), a control system is arranged inside the control panel (1), and both the drive motor (2) and the exhaust fan motor (18) are internally provided with an encoder and a pressure sensor.

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