A cabinet type high voltage power supply

Abstract

The application provides a cabinet type high-voltage power supply, and relates to the technical field of high-voltage power supplies, which comprises a cabinet and an electrical device, wherein the cabinet is provided with an air inlet and an exhaust fan, the air inlet is provided with an air inlet dust removal unit, the air inlet dust removal unit comprises a bent pipe, an internal partition plate is arranged in the bent pipe, and the bent pipe is divided into a flow channel one and a flow channel two; a filter element is arranged in the flow channel two and located on one side of the filter element close to the first end; a dust outlet and a communication port are separately arranged on the two sides of the filter element and the side wall of the flow channel two, the communication port is communicated with the flow channel one, a thermal control valve is arranged at the communication port; a one-way valve is arranged on one side of the flow channel two away from the dust outlet and allows the airflow to flow in the direction from the first end to the second end in one direction; the bent pipe is arranged, when the airflow flows through the bent pipe, the dust will flow to the second flow channel direction on the outside under the action of centrifugal force, the clean air enters the flow channel one, and the airflow mixed with dust enters the flow channel two to effectively remove the dust.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power supply technology, and in particular to a chassis-type high-voltage power supply. Background Technology

[0002] High-voltage power supplies are the core power units of precision instruments, medical systems, and industrial equipment, and their output stability and reliability directly determine the system performance indicators. The core power devices in high-voltage power supplies are high-power and high-density, generating a large amount of Joule heat during operation. The accumulation of heat causes the junction temperature of the devices to rise, leading to problems such as performance degradation, reduced efficiency, increased thermal stress, decreased reliability, and shortened lifespan.

[0003] Existing high-voltage power supplies use cooling fans to force airflow within the chassis for heat dissipation. However, the effect of forced ventilation alone is limited, and it is difficult to ensure uniform heat dissipation inside the power supply box. There are two reasons for this: First, if the air inlet filter is not cleaned in time during forced ventilation, dust will enter the chassis with the airflow, adhere to the internal components, affect heat dissipation, and reduce airflow. Second, currently the air inlet is only on the side wall of the chassis, and the airflow path is fixed after entering the chassis, forming heat dissipation dead zones inside the chassis, resulting in poor heat dissipation uniformity. Summary of the Invention

[0004] The purpose of this invention is to at least partially solve the above-mentioned problems by providing a chassis-type high-voltage power supply.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a chassis-type high-voltage power supply, comprising a chassis and electrical components disposed within the chassis, wherein an air inlet and an exhaust fan are provided on the side wall of the chassis, the exhaust fan being used to exhaust gas from inside the chassis to the outside, and an air intake dust removal unit is provided at the air inlet, the air intake dust removal unit comprising:

[0006] The bend has one end connected to the air inlet and the other end connected to the inside of the chassis. Inside, there is a partition that extends from the end connected to the chassis and divides the inside of the bend into flow channel one and flow channel two.

[0007] The filter element is installed in the second flow channel. It is located on the side of the filter element closer to the first end. Dust outlet and connecting port are respectively provided on both sides of the filter element and the side wall of the second flow channel. The connecting port is connected to the first flow channel. A thermal control valve is installed at the connecting port.

[0008] A one-way valve is installed on the side of the flow channel two away from the dust outlet, allowing airflow to flow in one direction from the first end to the second end.

[0009] The side wall of the chassis is also provided with a dust exhaust fan and a dust exhaust port. The dust exhaust fan is connected to the end of the flow channel away from the first end, and the dust exhaust port is connected to the dust outlet.

[0010] The chassis-type high-voltage power supply disclosed in this invention has the following advantages compared with the prior art: By setting up a bend, ambient temperature gas enters the first end of the bend from the air inlet under negative pressure. The airflow changes direction when passing through the bend, and under the action of centrifugal force, dust will flow towards the second flow channel on the outside. Therefore, clean air will enter the first flow channel and then enter the chassis. The airflow mixed with dust enters the second flow channel. The airflow in the second flow channel is filtered by the filter and then flows into the chassis, thereby effectively removing dust and ensuring heat dissipation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a chassis-type high-voltage power supply according to the present invention. Figure 1 .

[0012] Figure 2 This is a schematic diagram of the structure of a chassis-type high-voltage power supply according to the present invention. Figure 2 .

[0013] Figure 3 This is a schematic diagram of the structure of a chassis-type high-voltage power supply concealed cover according to the present invention. Figure 1 .

[0014] Figure 4 This is a schematic diagram of the structure of a chassis-type high-voltage power supply concealed cover according to the present invention. Figure 2 .

[0015] Figure 5 This is a schematic diagram of the air intake dust removal unit in a chassis-type high-voltage power supply according to the present invention.

[0016] Figure 6 This is a side view of a heat dissipation and dust removal unit in a chassis-type high-voltage power supply according to the present invention.

[0017] Figure 7 This is a bottom view of the heat dissipation and dust removal unit in a chassis-type high-voltage power supply according to the present invention.

[0018] Figure 8 This is a cross-sectional view of the heat dissipation and dust removal unit in this invention.

[0019] Figure 9 This is a schematic diagram of the pipe fitting in this invention.

[0020] Figure 10 This is a cross-sectional view of the pipe fitting in this invention.

[0021] Figure 11 This is a schematic diagram of the one-way valve in this invention.

[0022] Figure 12 for Figure 10 The diagram shown is a partially enlarged structural schematic of the thermal control valve at point A in the closed state of this invention.

[0023] Figure 13 for Figure 10 The diagram shown is a partially enlarged structural schematic of the thermal control valve in the open state at point A in this invention.

[0024] Figure 14 This is a schematic diagram of the thermal control valve in this invention.

[0025] Figure 15 This is a cross-sectional view of the thermal control valve in this invention.

[0026] Figure 16 This is a bottom view of the structure of tube one, tube two, and cover two in this invention.

[0027] Figure 17 This is a top view of the structure of tube one, tube two, and cover two in this invention.

[0028] Figure 18 This is a schematic diagram of the structure of tube one, tube two, and cover two in this invention.

[0029] Figure 19 This is a schematic diagram of the linear drive component in this invention.

[0030] Figure 20 This is a cross-sectional view of the linear drive component in this invention.

[0031] Figure 21 for Figure 20 The diagram shows a partially enlarged structural schematic at point B in this invention.

[0032] Figure 22 This is a schematic diagram of the structure of the filter element and the vibrating element in this invention.

[0033] In the diagram: 1. Chassis; 10. Chassis cover; 11. Air inlet 1; 12. Dust outlet; 13. Air inlet 2; 15. Electrical components; 2. Bend; 20a. Flow channel 1; 20b. Flow channel 2; 20. Cover 1; 200. First end; 201. Insertion port 1; 21. Insertion tube 1; 22. Fittings; 220. Partition plate; 221. Connecting port; 222. Airflow guiding vibration component; 2220. Elastic plate; 2221. Connecting plate 1; 2222, Cutting seam; 2223, Vibrating strip; 223, Guide plate one; 224, Guide plate two; 225, Dust outlet; 23, Insert pipe two; 24, Thermal control valve; 240, Valve; 241, Heat-conducting plate; 2420, Column cavity; 2421, Piston cylinder; 2422, Through hole; 2423, Piston rod one; 2424, Threaded rod; 25, Filter element; 250, Frame; 251, Filter layer one; 252. Connecting plate 2; 26. One-way valve; 260. Plate body; 261. Rotating shaft; 3. Dust exhaust fan; 31. Air guide pipe; 32. Dust guide pipe; 320. Dust guide cover; 321. One-way valve plate; 4. Pipe 1; 40. Air outlet; 41. Insert pipe 3; 5. Pipe 2; 50. Cover 2; 501. Insert port 2; 51. Insert pipe 4; 6. Baffle assembly; 60. Guide rod; 61. Valve plate; 62. Hinge rod; 63. Compression spring 1; 6 4. Reciprocating motion component; 65. Rigid cylinder; 650. Piston II; 651. Piston rod II; 652. Compression spring II; 66. Cylinder cover; 660. Ventilation pressure plate; 661. Ventilation hole; 662. Groove; 664. Filter layer II; 67. Baffle; 670. Guide cylinder; 68. Linkage rod; 680. Flange; 69. Magnetic seal; 690. Elastic corrugated component; 691. Magnetic component; 7. Exhaust fan; 9. Airflow. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0035] refer to Figure 1 - Figure 22 This application provides a chassis-type high-voltage power supply, the specific structure and working principle of which are described below. Example

[0036] refer to Figure 1 - Figure 13The chassis-type high-voltage power supply includes a chassis 1 and electrical components 15 housed inside the chassis 1. Electrical components 15, as the core of the high-voltage power supply's function, generate a large amount of Joule heat during operation. The chassis 1 provides a sealed protection and mounting platform for the electrical components 15, preventing interference from the external environment. An air inlet and an exhaust fan 7 are correspondingly provided on the side wall of the chassis 1. The exhaust fan 7 is fixedly installed on the side wall of the chassis 1, and its working direction is to exhaust the high-temperature gas inside the chassis 1 to the outside, thereby creating a negative pressure environment inside the chassis 1. This allows ambient temperature gas to enter the chassis 1 through the air inlet, achieving a circulation and exchange of gas inside and outside the chassis 1, providing initial heat dissipation for the electrical components 15. To solve the problem of dust accumulation on the air inlet filter 25 in the prior art, this embodiment provides an air intake dust removal unit at the air inlet and optimizes the airflow structure 9. The specific structure is as follows: the air intake dust removal unit includes a bent pipe 2, a filter 25, and a one-way valve 26. Simultaneously, an exhaust fan 3 and a dust outlet 12 are provided on the side wall of the chassis 1. The first end 200 of the bend 2 is connected to the air inlet, ensuring that the airflow 9 can completely enter the interior of the bend 2 from the air inlet through the first end 200. The second end extends into the interior of the chassis 1 and is connected to the interior space of the chassis 1, providing a channel for the airflow 9 to enter the interior of the chassis 1. The interior of the bend 2 is provided with a baffle 220, which extends from the second end near the connection with the chassis 1 to the first end 200. The extension length is adapted to the axial length of the bend 2, which precisely divides the interior of the bend 2 into flow channel one 20a and flow channel two 20b. The two flow channels are arranged in parallel, with one end located at the bend of the bend 2, realizing the diversion and flow of the airflow 9. The filter element 25 is made of glass fiber or metal sintered mesh and is installed in the flow channel 20b to effectively intercept dust and impurities in the airflow 9. Dust outlet 225 and connecting port 221 are respectively opened on both sides of the filter element 25 and the side wall of the flow channel 20b. The connecting port 221 is set through the partition 220 so that the flow channel 20b and the flow channel 1 20a are connected through the connecting port 221. A thermal control valve 24 is installed at the connecting port 221. The thermal control valve 24 is used to control the opening and closing of the connecting port 221, thereby adjusting the airflow 9 between the flow channel 1 20a and the flow channel 20b.

[0037] One-way valve 26 is installed inside flow channel 20b and is located on the side of dust outlet 225 away from filter element 25. For details, please refer to [reference needed]. Figure 8 , Figure 10 , Figure 11 The one-way valve 26 includes a plate 260 and a rotating shaft 261. The rotating shaft 261 is inserted into the side wall of the bend 2 and rotates after being inserted into the insertion sleeve on the edge of the plate 260. The rotating shaft 261 is correspondingly arranged at the end of the partition 220. Figure 10 The state shown is the closed state. Airflow 9 flows from the first end 200 of the bend 2 to the second end. Airflow 9 can impact the plate 260 as it rotates around the axis 261. Figure 8The open state shown allows only external gas to enter the chassis 1 through the flow channel 20b in one direction, while preventing the airflow in the flow channel 20b from flowing back to the air inlet, thus preventing dust from re-entering the air intake channel. The dust exhaust fan 3 is fixedly installed on the side wall of the chassis 1 and is connected to the end of the flow channel 20b away from the first end 200 through the air guide pipe 31. The dust exhaust fan 3 is used to operate for a predetermined time (1 minute to 2 minutes) when the exhaust fan 7 stops working. The working direction is to pump gas into the flow channel 20b to form a back-blowing airflow. After the back-blowing airflow enters the flow channel 20b, it can back-blow the filter element 25. At this time, the one-way valve 26 is closed, and the back-blowing airflow can flow out of the flow channel 20b through the dust outlet 225 and then be discharged from the dust outlet 12.

[0038] refer to Figure 1 - Figure 7 The air inlets include air inlet 11 and air inlet 13. The dust outlet 12 is located on the side wall of the chassis 1, below air inlet 11, and is connected to the dust outlet 12 via a dust guide pipe 32 and a dust guide cover 320. (See reference...) Figure 6 , Figure 7 The end of the dust guide pipe 32 is rotatably equipped with a one-way valve plate 321, which allows airflow to flow unidirectionally from the dust guide pipe 32 into the dust guide cover 320. In this embodiment, the dust discharge port 12 and the dust exhaust fan 3 are located on different sides of the chassis 1, which can reduce the chance that the dust discharged from the dust discharge port 12 will be sucked back into the dust exhaust fan 3.

[0039] Its working principle is as follows: When the high-voltage power supply is working, when the internal temperature reaches above 60℃, the exhaust fan 7 starts, expelling the high-temperature gas inside the chassis 1 to the outside. A negative pressure is formed inside the chassis 1, and the ambient temperature gas enters the first end 200 of the bend 2 from the air inlet under the action of the negative pressure. The airflow 9 flows in the direction shown in the figure. Figure 8 , Figure 10As shown, when the airflow 9 passes through the bend, the airflow 9 changes direction. Under the action of centrifugal force, the dust will flow towards the outer flow channel 20b. Therefore, clean air will enter the flow channel 20a and then enter the inside of the casing 1. The airflow 9 mixed with dust enters the flow channel 20b and is filtered by the filter element 25. The dust is intercepted on the side of the filter element 25 near the first end 200. The opening temperature of the thermal control valve 24 is 50℃-60℃. At this time, the thermal control valve 24 is open, and the airflow 9 enters the flow channel 20a through the connecting port 221. It enters the inside of the casing 1 along with the clean airflow 9 and exchanges heat with the electrical components 15, carrying away the heat generated by the electrical components 15 and completing the heat dissipation. When the exhaust fan 7 operates until the internal temperature of the chassis 1 reaches a suitable temperature (below 55℃), the exhaust fan 7 stops working. At this time, the dust extraction fan 3 starts working and maintains its operation for a predetermined duration (1-2 minutes). The backflushing airflow 9 is drawn from the outside. When the airflow 9 flows through the thermal control valve 24, it lowers the temperature of the thermal control valve 24, and the thermal control valve 24 closes the connection port 221. At this time, the dust extraction fan 3 pumps airflow into the flow channel 20b. The dust accumulated on the surface of the filter element 25 is separated from the filter element 25 under the action of the backflushing airflow and discharged through the dust outlet 225 with the airflow direction, realizing online dust removal of the filter element 25. The cleaning can be completed without disassembling the equipment. This ensures the cleanliness of the gas entering the chassis 1, reduces the probability of dust adhering to the electrical components 15, reduces the problem of performance degradation and shortened service life of the electrical components 15, and improves the heat dissipation effect.

[0040] Further reference Figure 1 - Figure 13 In this implementation, the inner wall of the chassis 1 is connected to a cover 20 structure, which covers the outer perimeter of the air inlet 11. The first end 200 of the bend 2 is sealed and connected to the cover 20, allowing external gas to first enter the cover 20 and then enter the first end 200 of the bend 2 through the cover 20. The bend 2 adopts a split structure design, including a body and a fitting 22. The body and the cover 20 are integrally formed to ensure the sealing of the connection between the two. The fitting 22 is detachably connected to the body, specifically by bolt connection or snap-fit ​​connection, which facilitates the subsequent disassembly of the fitting 22 for cleaning or maintenance of the baffle 220, flow channel 20a, and flow channel 20b inside the bend 2, and also facilitates the installation of the thermal control valve 24 and the flow guiding vibration component 222. The baffle 220 and the fitting 22 are integrally formed to ensure the firmness of the connection between the baffle 220 and the fitting 22, and the integral structure can improve the overall strength. The dividing surface between the main body and the fitting 22 is set to extend from the bend of the bend in the pipe 2 along the extension direction of the partition 220. That is, the dividing surface penetrates the bend in the pipe 2 and is parallel to the extension direction of the partition 220. This dividing method can ensure that the connecting surface between the main body and the fitting 22 is flat after the fitting 22 is disassembled, so that they can be quickly aligned during subsequent assembly. At the same time, it is easy to clean the dust accumulated at the bend, and avoid the accumulation of dust in the dead corner of the bend, which would affect the airflow 9.

[0041] Furthermore, a first insertion tube 21 is integrally formed on the cover 20, and a second insertion tube 23 is integrally formed on the end of the tube 22. The second insertion tube 23 is connected to the end of the second flow channel 20b, and the outer diameter of the second insertion tube 23 is adapted to the inner diameter of the second flow channel 20b; Reference Figure 3 , Figure 5 The dust exhaust fan 3 is connected to the air guide pipe 31. The end of the air guide pipe 31 is provided with an elbow that can be inserted and matched with the second insertion pipe 23. The back-blowing airflow can flow into the second flow channel 20b through the air guide pipe 31 and the second insertion pipe 23, which is convenient for assembly. The opening of the first insertion pipe 21 is set towards the box cover 10, which is convenient for subsequent insertion and matching with the third insertion pipe 41 at the end of the first pipe 4.

[0042] In practical applications, an electrically controlled valve (not shown in the figure) can also be configured on the air duct 31. The electrically controlled valve opens when the dust exhaust fan 3 is turned on, allowing airflow to pass through the air duct 31. When the dust exhaust fan 3 is turned off, the air duct 31 is closed. Filter cotton is installed at the dust exhaust fan 3 to filter the pumped backflushing airflow entering the dust exhaust fan 3.

[0043] Furthermore, in order to optimize the layout of the heat pipes within chassis 1 and further improve the uniformity of heat dissipation, refer to Figure 1 - Figure 13 Cover 20 is fixedly installed on the side of chassis 1 and corresponds to the air inlet 11 on the side to ensure that airflow can smoothly enter cover 20; the top of chassis 1 adopts a detachable and sealed cover 10. The cover 10 is sealed to the top of chassis 1 by bolts. A sealing strip is set at the connection between the cover 10 and chassis 1 to ensure the airtightness of chassis 1 and prevent external dust and moisture from entering the interior of chassis 1. At the same time, the detachable design makes it easy to open the cover 10 to maintain and repair the electrical components 15 inside chassis 1. Along the width direction of the chassis 1, a tube 4 is fixedly installed on the inner surface of the cover 10. The side of the tube 4 closest to the cover 10 is open and sealed to the cover 10. A third insertion tube 41 is provided at the end of the tube 4. The third insertion tube 41 is inserted and sealed to the upper end of the first insertion tube 21 to ensure that the airflow in the flow channel 20a can enter the tube 4 through the insertion tube 21. Multiple air outlets 40 are provided at intervals on the bottom surface of the tube 4. The air outlets 40 are evenly distributed along the length direction of the tube 4, and the air outlets 40 are oriented toward the electrical components 15 inside the chassis 1 to ensure that the airflow 9 flowing out from the tube 4 can be evenly blown to various areas inside the chassis 1.

[0044] The above-described implementation further optimizes the flow and heat dissipation effect of the airflow 9 inside the chassis 1, as follows: When the thermal control valve 24 is turned on, the airflow 9 in the first flow channel 20a and the second flow channel 20b enters the interior of the first pipe 4 through the first insertion tube 21. Since the first pipe 4 is set along the width direction of the chassis 1 and has multiple air outlets 40 evenly distributed on its bottom surface, after the airflow 9 is evenly distributed inside the first pipe 4, it blows vertically downwards through each air outlet 40 towards the electrical components 15 inside the chassis 1, realizing the dispersed outflow of the airflow 9. This disperses the airflow 9 that originally directly enters the interior of the chassis 1 into multiple air outlets 40, increasing the coverage of the airflow 9, effectively eliminating heat dissipation dead zones inside the chassis 1, and achieving uniform heat dissipation. When it is necessary to maintain the electrical components 15, the cover 10 can be removed, and the first pipe 4 can be removed together with the cover 10, making it convenient to clean and maintain the first pipe 4 and the interior of the chassis 1. The removable sealing design of the cover 10 takes into account both the sealing performance of the chassis 1 and the convenience of maintenance.

[0045] Furthermore, in this embodiment, reference is made to Figure 1 - Figure 8 Both the exhaust fan 7 and the dust extraction fan 3 are fixedly installed on the rear side wall of the chassis 1, and are spaced apart to avoid mutual interference. The exhaust fan 7 is used to exhaust the high-temperature gas inside the chassis 1. The air intake end of the dust extraction fan 3 is fixedly connected to the air guide pipe 31. The other end of the air guide pipe 31 is inserted and sealed with the end of the second pipe 23. The second end of the bent pipe 2 is bent towards the front end of the chassis 1, so that the first pipe 4 can be arranged at the front end of the chassis 1. This allows the heat dissipation airflow to flow from front to back inside the chassis 1, improving heat dissipation efficiency and optimizing the structural layout of the chassis 1, thus improving space utilization.

[0046] As a specific implementation method, refer to Figure 12 - Figure 15In this embodiment, the specific structure of the thermal control valve 24, which realizes the automatic temperature control function of the thermal control valve 24, is as follows: The connecting port 221 is opened on the partition plate 220 and located on the side near the second end of the bend 2. The size of the connecting port 221 is adapted to the valve component 240 of the thermal control valve 24, ensuring that the valve component 240 can effectively open and close the connecting port 221, realizing the closure or opening of the connecting port 221; the thermal control valve 24 includes a valve component 240, a heat-conducting plate 241, a cylindrical cavity 2420, and a piston cylinder 2421. The valve component 240 can be made of sealing rubber or a metal sealing plate; the heat-conducting plate 241 is detachably installed on the side wall of the pipe component 22. The heat-conducting plate 241 is made of a material with high thermal conductivity, and has… The body can be made of copper or aluminum alloy for easy and rapid temperature conduction. A threaded rod 2424 is provided at the end of the column cavity 2420, which is mounted on the heat-conducting plate 241. The piston cylinder 2421 is coaxially arranged with the column cavity 2420, and one end of the piston cylinder 2421 is connected to the interior of the column cavity 2420 through a through hole 2422. The other end of the piston cylinder 2421 extends to a position close to the communication port 221. A piston rod 2423 is guided and fitted inside the piston cylinder 2421. One end of the piston rod 2423 is threadedly connected to the valve 240, and the other end is fitted with the piston cylinder 2421. The inside of the column cavity 2420 is filled with a thermal expansion medium, which can be paraffin or other substances with a large coefficient of thermal expansion.

[0047] refer to Figure 12 , Figure 15 This is the state when the temperature of the thermal control valve 24 drops below 55°C. At this time, valve 240 is inside the connection port 221. When the connection port 221 is closed, and the temperature around the thermal control valve 24 is above 60°C, the thermal expansion medium expands, pushing piston rod 2423 to move, thus causing valve 240 to extend out of the connection port 221, and is now in the open state. When the high-voltage power supply is working, the heat generated by the electrical components 15 is transferred to the inside of the chassis 1, and then to the side wall of the pipe 22. The heat-conducting plate 241 quickly conducts the temperature to the inside of the column cavity 2420. The thermal expansion medium inside the column cavity 2420 absorbs heat and expands in volume. When the temperature inside the chassis 1 is low (below a preset threshold, such as 55°C), the volume of the thermal expansion medium is small, and piston rod 2423... 23 drives valve 240 to be positioned inside connection port 221, closing connection port 221. At this time, the inside of chassis 1 is at a suitable temperature, and exhaust fan 7 does not work. When the temperature inside chassis 1 is too high, thermal control valve 24 opens connection port 221, connecting flow channel 1 20a and flow channel 20b. Exhaust fan 7 works, and part of the outside air enters chassis 1 after being filtered through flow channel 20b, while the other part enters chassis 1 directly through flow channel 1 20a for heat dissipation. When the temperature inside chassis 1 drops, the volume of thermal expansion medium contracts, and piston rod 2423 also retracts with the contracting medium, driving valve 240 to close connection port 221 again, thus achieving automatic temperature regulation.

[0048] Furthermore, it is understandable that when the thermal control valve 24 is open, the airflow 9 flowing in the flow channel 20b during the operation of the exhaust fan 7 may come into convective contact with the column cavity 2420. Since the airflow 9 flowing through the flow channel 20b is at a lower temperature, this may cause the thermal control valve 24 to close. To solve this problem, refer to... Figure 12 , Figure 13 The heat-conducting plate 241 is fixedly installed on the side wall of the pipe fitting 22. The side wall is a side wall on the pipe fitting 22 that is spaced apart from the partition plate 220. The heat-conducting plate 241 is located between the column cavity 2420 and the filter element 25. A flow guide plate 224 is fixedly installed on the side wall. The flow guide plate 224 is made of thin metal plate. The flow guide plate 224 extends towards the partition plate 220, and the end of the flow guide plate 224 is spaced apart from the partition plate 220 to form an airflow channel.

[0049] Its working principle is as follows: After the airflow in the second flow channel 20b passes through the filter element 25, under the guidance of the second guide plate 224, it is directly guided to the connecting port 221 and then enters the first flow channel 20a from the connecting port 221. This reduces the time that the airflow 9 stays around the thermal control valve 24 and also avoids the airflow 9 from directly contacting the column cavity 2420. This prevents the airflow 9 from directly impacting and exchanging heat with the column cavity 2420, which would cause the thermal control valve 24 to cool down excessively, resulting in too small an opening or closure.

[0050] It is understandable that, in some implementations, references Figure 3 , Figure 4 , Figure 12 The air duct 31 and the fitting 22 are arranged in parallel and spaced apart, so that the column cavity 2420 can be placed inside the air duct 31. The heat conduction plate 241 is placed on the side wall of the air duct 31 away from the fitting 22. After the piston rod 2423 extends out, it passes through the side wall of the air duct 31 and the fitting 22 and communicates with the valve 240, thereby avoiding the airflow 9 in the flow channel 20b from impacting the column cavity 2420 during heat dissipation.

[0051] Furthermore, in this embodiment, a flow-guiding vibration element 222 is added to further improve the dust removal effect of the filter element 25 and prevent the filter element 25 from clogging. (Refer to...) Figure 12 , Figure 13 The specific implementation method is as follows: Within the flow channel 20b, a flow-guiding vibration element 222 is fixedly installed on the partition 220 located between the thermal control valve 24 and the filter element 25. (Refer to...) Figure 22The flow-guiding vibrating element 222 includes a connecting plate 2221 detachably and fixedly connected to the partition 220 and an elastic plate 2220 welded to the connecting plate 2221. The elastic plate 2220 is made of elastic metal sheet and has a certain degree of elasticity and toughness. One end of the flow-guiding vibrating element 222 is fixedly connected to the partition 220, and the other end is a free end, which bends and extends towards the filter element 25. Multiple vibration strips 2223 are formed by cutting through the cutting slit 2222 on the elastic plate 2220, and the end of the vibration strip 2223 connected to the elastic plate 2220 is close to the free end. The structure of component 222 is designed such that when the airflow in the flow channel flows from the second end to the first end 200 (i.e., when the dust exhaust fan 3 is started, the airflow flows in the opposite direction), the free end of the elastic plate 2220 abuts against the filter element 25. At this time, the airflow flows through the cutting slit 2222, generating an impact force on the free end of the vibrating strip 2223. Because the guide vibrating component 222 is elastic, it will generate high-frequency vibration under the action of the airflow impact force. Its free end can adhere to the surface of the filter element 25, and the vibration shakes off the dust attached to the surface of the filter element 25, making it easier for the airflow to carry away the dust. (Reference) Figure 22 The filter element 25 includes a frame 250, a filter layer 251 installed on the frame 250, and a connecting plate 252 connected to the frame 250. The frame 250 is plugged into the pipe 22, and the connecting plate 252 is detachably and fixedly connected to the pipe 22 for easy disassembly and maintenance.

[0052] This embodiment utilizes the reverse airflow to cause the guide vibrator 222 to vibrate at high frequency, which helps to shake off stubborn dust adhering to the surface of the filter element 25. The shaken-off dust moves towards the dust outlet 225 under the action of the reverse airflow and is finally discharged through the dust outlet 225 and the dust discharge port 12, achieving deep cleaning of the filter element 25. When the dust exhaust fan 3 is turned off and the airflow resumes forward flow (from the first end 200 to the second end), the airflow impacts the guide vibrator 222 in the opposite direction, and the guide vibrator 222 will bend in the opposite direction. Figure 13 The state shown maintains a gap with the filter element 25, which does not obstruct the forward flow of air or affect the filtration effect of the filter element 25. This method does not require an additional drive device, and uses the impact force of the reverse flow of air to achieve vibration, which saves energy, has a simple structure, and is highly reliable.

[0053] Further reference Figure 12 , Figure 13On one side of the inlet 2 501, a guide plate 223 is also provided on the partition 220. The end of the guide plate 223 away from the partition 220 bends towards the side wall and the thermal control valve 24. With the above arrangement, during dust removal, the airflow entering the flow channel 20b is guided by the guide plate 223 and then convects with the column cavity 2420, thereby accelerating the heat exchange with the column cavity 2420 and causing the thermal control valve 24 to quickly switch to the closed state. The same effect can be achieved when the column cavity 2420 is located in the air duct 31. Example

[0054] refer to Figure 16 - Figure 21 This application provides a chassis-type high-voltage power supply. The difference from Embodiment 1 is that, to further improve heat dissipation uniformity and air intake efficiency, two air inlets are provided: air inlet 11 and air inlet 23. The two air inlets are symmetrically located on the two side walls of the chassis 1. Air inlet 11 corresponds to cover 20, and air inlet 23 is correspondingly provided with cover 20. On the inner surface of the cover 10, pipe 25 is also installed. Pipe 25 is parallel to and spaced apart from pipe 14. Pipe 25 is hollow inside and open at the top. Both ends of pipe 25 are provided with insertion tubes 41 that are inserted and sealed to cover 20 and cover 20. (Refer to...) Figure 5 Cover 1 20 is provided with a matching socket 1 201, and cover 2 50 is provided with a socket 2 501, so that cover 1 20 and cover 2 50 are connected; a flow-disrupting component 6 is provided inside pipe 1 4. The specific structure of the flow-disrupting component 6 is as follows: here, two sets are provided at the air outlet 40, and two are provided in each set; including a guide rod 60 provided at the bottom of pipe 1 4, and two valve plates 61 provided on the guide rod 60. Each valve plate 61 is provided between the two air outlets 40 in each set, and the guide rod 60 is located at the two Compression springs 63 are fitted on both sides of the valve plate 61 to provide elastic force for the valve plates 61 to move closer to each other. Both valve plates 61 are hinged to hinge rods 62, the other end of which is hinged to a reciprocating motion component 64. The reciprocating drive component can drive the reciprocating motion component 64 to reciprocate in a direction perpendicular to the guide rod 60. With this arrangement, when the reciprocating motion component 64 reciprocates, it can drive the valve plate 61 to reciprocate axially along the guide rod 60, thereby alternately blocking the two air outlets 40 in each group. During alternating blocking, the effective flow area of ​​each air outlet 40 is changed, thereby changing the airflow rate from the air outlet 40. This can cause airflow disturbance inside the chassis 1, avoiding a fixed airflow path and further improving heat dissipation uniformity. In some embodiments, the reciprocating drive component can be an electric push rod, reciprocating at a predetermined frequency.

[0055] Furthermore, as another specific implementation method, refer to Figure 18 - Figure 21The specific structure of the reciprocating drive component is as follows: Pipe 4 and pipe 5 are integrally set. The reciprocating drive component includes a rigid cylinder 65 set on the common side wall of pipe 4 and pipe 5. The end of the rigid cylinder 65 that extends into pipe 4 is provided with a vent and a piston rod 651 is provided as a guide. The piston rod 651 is connected to a piston 650. The piston 650 is adapted to the rigid cylinder 65. A vent is provided through the piston 650. The flow area of ​​the vent is smaller than the flow area of ​​the vent, and the two are 5-10 times smaller. A cylinder cover 66 is provided at the end of the rigid cylinder 65 that extends into pipe 5. A guide cylinder 670 is provided on the cylinder cover 66. A linkage rod 68 is provided inside the guide cylinder 670. The linkage rod 68 is connected to the piston 650. A flange 680 is provided at the end of the linkage rod 68. A baffle 67 is connected to the end of the guide cylinder 670. The cylinder cover 66 has a groove 662, and a filter layer 664 is installed inside the groove 662. Multiple vent holes 661 are provided through the bottom of the groove 662, and the sum of the flow areas of the multiple vent holes 661 is greater than the flow area of ​​the vent. A vent plate 660 is adhered above the groove 662. Magnetic sealing elements 69 are provided on the surface of the baffle 67 corresponding to the vent holes 661. A compression spring 652 is provided between the piston 650 and the end of the rigid cylinder 65. (Reference) Figure 21 The magnetic seal 69 includes an elastic corrugated element 690 bonded to the baffle 67 and a magnetic element 691. The magnetic element 691 can magnetically engage with the cylinder cover 66. The elastic corrugated element 690 is made of rubber or silicone and its initial state is... Figure 21 The corrugated shape shown has axial stretchability.

[0056] Its working principle is as follows: when exhaust fan 7 is working, a certain negative pressure is generated inside the chassis 1, so that the air pressure inside pipe 4 is lower than the air pressure inside pipe 5. Figure 20 In the state shown, compression spring 652 is in a compressed state, as indicated by the reference. Figure 21At this time, due to the magnetic attraction between the magnetic seal 69 and the cylinder cover 66, the magnetic element 691 is in a sealed state blocking the vent 661. Therefore, the rigid cylinder 65 is not connected to the pipe 5. At this time, the air pressure on both sides is balanced through the vent on the piston 650. Under the elastic force of the compression spring 652, the piston 650 is pushed towards the cylinder cover 66. During the movement, after contacting the end of the guide cylinder 670, it pushes the guide cylinder 670 to move synchronously, thereby pushing the baffle 67 to move, causing the elastic bellows 690 to be stretched. As it continues to move, the elastic force of the elastic bellows 690 is greater than the magnetic attraction between the magnetic element 691 and the cylinder cover 66. When the piston 650 continues to move closer to the cylinder cover 66, the magnetic element and the cylinder cover 66... Separation; at this time, the rigid cylinder 65 can communicate with the inside of the second pipe 5. Due to the small flow area of ​​the vent and the small balance flow, a pressure difference is generated on both sides of the second piston 650 inside the rigid cylinder 65. Under the action of this pressure difference, the second piston 650 is pushed to squeeze the second spring 652 and drive the linkage rod 68 to move. When the second piston 650 moves to a certain displacement, the flange 680 at the end of the linkage rod 68 can pull the baffle 67 to move so that the magnetic part 691 re-contacts the cylinder cover 66 and closes the vent hole 661 again. Then the vent balances the air pressure on both sides again and repeats the above action to achieve the effect of repeated driving. The reciprocating motion part 64 is connected to the second piston rod 651 to achieve the effect of reciprocating driving.

[0057] This embodiment uses the negative pressure difference generated inside the chassis 1 during heat dissipation to drive the reciprocating motion component 64. The reciprocating speed of the reciprocating drive component is proportional to the power of the exhaust fan 7. When the power of the exhaust fan 7 is greater and the negative pressure generated inside the chassis 1 is lower, the negative pressure difference between the two ends of the rigid cylinder 65 is greater when the baffle 67 is opened. This results in a greater air pressure difference on both sides of the piston 650, which in turn drives the piston 650 to move faster and the reciprocating drive frequency is also faster. The driving power of the exhaust fan 7 is adjusted according to the internal temperature of the chassis 1. The higher the temperature, the greater the driving power, which in turn makes the reciprocating speed of the reciprocating drive component faster, resulting in better turbulence and higher heat dissipation efficiency, thereby improving heat dissipation efficiency. This achieves dynamic airflow turbulence, making the airflow distribution more uniform. It completely eliminates heat dissipation dead zones inside the chassis 1, improving heat dissipation uniformity. The turbulence intensity can be adjusted according to the temperature to achieve intelligent heat dissipation. It optimizes the airflow circulation inside the chassis 1 and extends the service life of the electrical components 15.

[0058] It should be noted that, in a specific implementation, the length of the linkage rod 68 is one-third to one-half of the axial dimension of the rigid cylinder 65.

[0059] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A chassis-type high-voltage power supply, comprising a chassis (1) and electrical components (15) disposed within the chassis, wherein the side wall of the chassis (1) is provided with an air inlet and an exhaust fan (7), the exhaust fan (7) being used to exhaust gas from inside the chassis (1) to the outside, characterized in that, An air intake dust removal unit is provided at the air inlet, and the air intake dust removal unit includes: The bend (2) has a first end (200) connected to the air inlet and a second end connected to the inside of the chassis (1). A partition (220) is provided inside the bend (2), which extends from the end connected to the chassis (1) and divides the inside of the bend (2) into flow channel one (20a) and flow channel two (20b). The filter element (25) is disposed in the second flow channel (20b) and located on the side of the filter element (25) near the first end (200). Dust outlet (225) and connecting port (221) are respectively provided on both sides of the filter element (25) and the side wall of the second flow channel (20b). The connecting port (221) is connected to the first flow channel (20a). A thermal control valve (24) is provided at the connecting port (221). A one-way valve (26) is provided on the side of the flow channel (20b) away from the dust outlet (225) and away from the filter element (25), allowing the airflow (9) to flow unidirectionally from the first end (200) to the second end; The side wall of the chassis (1) is also provided with a dust exhaust fan (3) and a dust exhaust port (12). The dust exhaust fan (3) is connected to the end of the flow channel (20b) away from the first end (200), and the dust exhaust port (12) is connected to the dust outlet (225). It also includes a cover (20) corresponding to the air inlet, with the first end (200) connected to the cover (20); The bend (2) includes a body integrally formed with the cover (20) and a pipe fitting (22) detachably connected to the body. The partition (220) is integrally formed with the pipe fitting (22), and the dividing surface of the body and the pipe fitting (22) extends along the extension direction of the partition (220) from the bend.

2. The chassis-type high-voltage power supply according to claim 1, characterized in that, Cover 1 (20) is integrally provided with insert tube 1 (21), insert tube 1 (21) is connected to flow channel 1 (20a), and fitting (22) is integrally provided with insert tube 2 (23) which is connected to the end of flow channel 2 (20b).

3. A chassis-type high-voltage power supply according to claim 2, characterized in that, The cover (20) is located on the side of the chassis (1). The top of the chassis (1) is detachably sealed with a cover (10). Along the width direction of the chassis (1), the inner surface of the cover (10) is provided with a pipe (4) that is inserted and sealed with the insertion pipe (21). Multiple air outlets (40) are provided at intervals on the bottom surface of the pipe (4).

4. A chassis-type high-voltage power supply according to claim 2, characterized in that, The exhaust fan (7) and the dust exhaust fan (3) are both located on the rear side wall of the chassis (1). The dust exhaust fan (3) is connected to the air guide pipe (31), and the air guide pipe (31) is connected to the second insertion pipe (23) in a sealed fit.

5. A chassis-type high-voltage power supply according to claim 3, characterized in that, The connecting port (221) is provided on the partition plate (220). The thermal control valve (24) includes a valve (240) adapted to the connecting port (221), a heat-conducting plate (241) provided on the side wall of the pipe fitting (22), a column cavity (2420) provided on the heat-conducting plate (241), and a piston cylinder (2421) coaxially provided with the column cavity (2420). The piston cylinder (2421) is guided and fitted with a piston rod (2423). The piston rod (2423) is connected to the valve (240). One end of the piston cylinder (2421) is connected to the column cavity (2420). The column cavity (2420) is filled with a thermal expansion medium.

6. A chassis-type high-voltage power supply according to claim 5, characterized in that, The heat-conducting plate (241) is disposed on a side wall that is spaced apart from the pipe (22) and the partition (220), located between the column cavity (2420) and the filter (25). A guide plate (224) is disposed on the side wall, which extends toward the partition (220) and its end is spaced apart from the partition (220).

7. A chassis-type high-voltage power supply according to claim 6, characterized in that, Located in the flow channel two (20b), on the side of the thermal control valve (24) away from the valve (240), a guide plate one (223) is also provided on the partition plate (220). The end of the guide plate one (223) away from the partition plate (220) bends toward the side wall one and toward the thermal control valve (24).

8. A chassis-type high-voltage power supply according to claim 2, characterized in that, Located between the thermal control valve (24) and the filter element (25), the partition plate (220) is also provided with a flow guide vibration element (222). When the airflow (9) in the flow channel flows from the second end to the first end (200), the end of the flow guide vibration element (222) can fit with the filter element (25) and vibrate when the airflow (9) flows through it.

9. A chassis-type high-voltage power supply according to claim 3, characterized in that, The air inlet includes an air inlet 1 (11) and an air inlet 2 (13) respectively located on the two side walls of the chassis. Cover 1 (20) corresponds to air inlet 1 (11), and air inlet 2 (13) corresponds to cover 2 (50). On the cover (10), there is also a pipe 1 (4) arranged parallel to pipe 2 (5). The two ends of pipe 2 (5) are respectively inserted and sealed with cover 1 (20) and cover 2 (50). A turbulence component (6) is provided inside pipe 1 (4), and a reciprocating drive component is provided between pipe 2 (5) and pipe 1 (4) to drive the turbulence component (6) to reciprocate turbulence motion.

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