Planar transformer of switching power supply

Abstract

The invention relates to the technical field of transformers, in particular to a planar transformer of a switching power supply, which comprises a shell, a planar transformer body is fixedly connected to the middle of the interior of the shell, water tanks are movably connected to two sides of the interior of the shell, and a cooling device is fixedly connected to one side, close to the planar transformer body, of each water tank. A flow guide frame is fixedly connected to the side, close to the planar transformer body, of the cooling device, and through pipes are placed in the shell and the cooling device. According to the planar transformer, the shell, the cooling device, the water tank and the through pipe are arranged, heat dissipation of the planar transformer body is facilitated, a good dustproof effect is achieved while heat dissipation is conducted, a water pump and an air pump are started, cooling liquid circularly flowing in a spiral water pipe can further cool air in a spiral air pipe, and the cooling effect is improved. And the planar transformer body can be further cooled under the action of the through pipe, and meanwhile, dust can be automatically removed after the planar transformer is used for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a planar transformer for a switching power supply. Background Art

[0002] A switching power supply, also known as an alternating current power supply or switching converter, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage level to the voltage or current required by the user through various configurations. The input of a switching power supply is typically AC or DC, and the output is typically for devices requiring DC power, such as personal computers. The switching power supply performs the voltage and current conversion between the two. Switching power supplies typically utilize planar transformers, which are characterized by high frequency, low profile, and minimal height, while operating at high frequencies. The key differences between planar transformers and traditional transformers lie in the core and coil windings. Planar transformers utilize small E-type, RM-type, or toroidal ferrite cores, typically made of high-frequency power ferrite material, resulting in low core losses at high frequencies. The windings are constructed using multiple layers of printed circuit boards, with the windings or copper sheets stacked on the planar high-frequency core forming the transformer's magnetic circuit. This design offers low DC copper resistance, low leakage inductance, and distributed capacitance, meeting the design requirements of resonant circuits. Furthermore, the core's excellent magnetic shielding suppresses radio frequency interference.

[0003] Existing planar transformers in switching power supplies are generally optimized for heat dissipation by adding heat dissipation holes or attaching external heat sinks. However, this results in poor heat dissipation efficiency and low airflow exchange efficiency, leading to core saturation and reduced efficiency at high temperatures, and even thermal failure. Furthermore, the open heat dissipation design is prone to accumulation of dust and particulate matter, which may clog the air duct during long-term operation, reduce heat dissipation performance, or even cause electrical short circuit risks. Summary of the Invention

[0004] In view of this, the present invention provides a planar transformer for a switching power supply, the main technical problem to be solved is: solving the problem that the planar transformer of the switching power supply has low heat dissipation efficiency and is prone to dust accumulation during use.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a planar transformer of a switching power supply, comprising a shell, a planar transformer body is fixedly connected to the middle of the interior of the shell, water tanks are movably connected on both sides of the interior of the shell, a cooling device is fixedly connected to the side of the water tank close to the planar transformer body, a guide frame is fixedly connected to the side of the cooling device close to the planar transformer body, a through pipe is placed inside the shell and the cooling device, the cooling device comprises a fixed shell fixedly connected to the side of the water tank close to the planar transformer body, a water inlet pipe and a water outlet pipe are fixedly connected to the side of the fixed shell close to the water tank, a spiral water pipe is fixedly connected between the water inlet pipe and the water outlet pipe, an air inlet pipe and an air outlet pipe are fixedly connected to the side of the fixed shell away from the water tank, a spiral air pipe is fixedly connected between the air inlet pipe and the air outlet pipe, the spiral air pipe is fixedly connected to the spiral water pipe, an air pump is installed on the air outlet pipe, and a water pump is installed on the water outlet pipe.

[0006] By adopting the above technical solution, the water pump is started so that the coolant inside the water tank can enter the spiral water pipe through the water inlet pipe and flow back to the water tank through the water outlet pipe, so that the coolant in the water tank can circulate in the spiral water pipe. By starting the air pump, the air in the shell can enter the spiral air pipe through the air inlet pipe and be discharged to the shell through the air outlet pipe, so that the air in the shell can circulate in the spiral air pipe. The coolant circulating in the spiral water pipe can cool the spiral air pipe, and then the air in the spiral air pipe can be cooled, so that the air from the outlet pipe can be cooled. The temperature of the air discharged from the air pipe is lower, which is convenient for lowering the temperature of the air inside the shell, and thus facilitating rapid cooling of the planar transformer body. The air inlet pipe in the left cooling device is at the right rear, the air outlet pipe is at the right front, the water inlet pipe is at the left front, and the water outlet pipe is at the left rear. The air inlet pipe in the right cooling device is at the left front, the air outlet pipe is at the left rear, the water inlet pipe is at the right rear, and the water outlet pipe is at the right front, so that the flow directions of the air in the spiral air pipe and the coolant in the spiral water pipe are opposite, thereby making the flow speed of the air faster relative to the coolant, which is convenient for accelerating the heat exchange efficiency.

[0007] As a further description of the above technical solution: the outer shell includes a shell, a card slot is provided on the inner side of the shell, a sealing sleeve is fixedly connected to the inner side of the shell, a placement hole is provided inside the shell, and a sealing ring is fixedly connected to the lower part of the inside of the shell.

[0008] By adopting the above technical solution, the sealing sleeve is used to ensure the sealing between the box body and the shell, the placement hole is used to place the through pipe, and the sealing ring is used to ensure the sealing between the pin and the shell. The sealing ring and the sealing sleeve are both made of rubber material.

[0009] As a further description of the above technical solution: the guide frame includes a frame body fixedly connected to the fixed shell on the side close to the planar transformer body, the frame body is provided with a through hole on the side close to the planar transformer body, and a partition is fixedly connected to the interior of the frame body.

[0010] By adopting the above technical solution, the through holes are used for the passage of air, ensuring that the exhausted air can be more evenly distributed in the shell, and allowing air from multiple locations to be inhaled into the intake pipe, preventing the air from being inhaled in a small range and resulting in poor cooling effect. The partition is used to block the incoming and exhausted air, ensuring that the air with a lower temperature that has just been discharged will not be inhaled too much into the intake pipe.

[0011] As a further description of the above technical solution: the water tank includes a box body movably connected to both sides of the interior of the shell, the top of the box body is threadedly connected to a sealing cover, the front and rear sides of the box body are fixedly connected to blocks, the interior of the box body is fixedly connected to a first heat sink and a second heat sink, the interior of the box body is provided with a groove, the side of the box body close to the cooling device is provided with a water inlet and a water outlet, and the upper and lower parts of the interior of the box body are fixedly connected to a dust removal device.

[0012] By adopting the above technical solution, the card block is made of rubber material, and the card block can be deformed by extrusion, so that the box can be smoothly placed in the shell, and when the card block is aligned with the card slot, it can be inserted into the card slot, so that the box can be fixed. The first heat sink and the second heat sink are both made of copper material, which has good thermal conductivity and is convenient for quickly dissipating heat in the coolant. The setting of the pull groove makes it convenient to pull the box out of the shell, the water inlet is fixedly connected to the water outlet pipe, so that the coolant flowing out of the water outlet pipe can enter the box, and the water outlet is fixedly connected to the water inlet pipe, so that the coolant in the box can enter the water inlet pipe. The dust removal device is used to scrape off dust attached to the surfaces of the first heat sink and the second heat sink.

[0013] As a further description of the above technical solution: the dust removal device includes an air shell fixedly connected to the upper and lower parts of the box body, the air shell is fixedly connected to a thermal insulation pad on one side close to the center of the box body, the air shell and the thermal insulation pad are fixedly connected to a heat conducting rod, the air shell is movably connected to a connecting rod inside, the connecting rod is movably connected to a rod sleeve outside, the inner end of the connecting rod is fixedly connected to a movable plate, the outer side of the movable plate is fixedly connected to a plate sleeve, the outer end of the connecting rod is fixedly connected to a scraper, and the scraper is provided with a scraping hole inside.

[0014] By adopting the above technical solution, when the first heat sink and the second heat sink have a lot of dust attached to the outside due to long-term use, the heat dissipation effect of the first heat sink and the second heat sink on the coolant in the box is reduced, thereby causing the temperature of the coolant to be higher. The temperature of the coolant will be introduced into the air shell through the heat conducting rod, thereby causing the carbon dioxide in the air shell space where the heat conducting rod is located to expand under the action of temperature, thereby causing the air pressure in the air shell space where the heat conducting rod is located to increase. When the air pressure reaches a level that overcomes the friction between the rod sleeve and the connecting rod, the friction between the plate sleeve and the air shell, and the friction between the scraper and the first heat sink and the second heat sink, the movable plate will drive the connecting rod so that the scraper can scrape off the dust attached to the surface of the first heat sink and the second heat sink, thereby returning the heat dissipation effect of the first heat sink and the second heat sink to a good state, thereby reducing the temperature of the coolant, thereby reducing the temperature of the heat conducting rod, and allowing the air pressure in the air shell space where the heat conducting rod is located to return to normal, allowing the movable plate to return to its original position until the first heat sink and the second heat sink are again affected by excessive dust adhesion, resulting in poor heat dissipation of the coolant.

[0015] As a further description of the above technical solution: the through pipe includes a tube body placed inside the shell and the fixed shell, the inner side of the tube body is fixedly connected to the heat dissipation fins, the front and rear sides of the outer side of the tube body are threadedly connected to the fixed disk, the side of the fixed disk close to the center of the tube body is fixedly connected to the sealing gasket, and the side of the fixed disk away from the center of the tube body is fixedly connected to the shift pin.

[0016] By adopting the above technical solution, the tube body and the heat dissipation fins are both made of copper with good thermal conductivity. The outer side of the tube body is fitted with the spiral air pipe, so that the heat in the spiral air pipe can enter the tube body and then enter the heat dissipation fins. The heat dissipation fins are in direct contact with the outside air, which is convenient for dissipating the heat directly to the outside air, and can further dissipate the heat of the spiral air pipe, thereby facilitating the rapid dissipation of the air in the spiral air pipe. The tube body is inserted into the shell and the fixed shell, and then the fixed disk is put on the front and back sides of the outer side of the tube body, and the fixed disk is rotated on the outside of the tube body by twisting the dial, and the fixed disk is moved back and forth on the outside of the tube body by the forward and reverse rotation of the fixed disk. The movement allows the sealing gasket to be close to the shell, so that the tube body can be fixed, and under the sealing of the sealing sleeve, sealing ring and sealing gasket, the interior of the shell is in a relatively sealed state, so that dust in the outside air will not enter the shell. While dissipating heat, it also ensures a good dustproof effect, preventing excessive dust from easily clogging the air duct, reducing heat dissipation performance and causing electrical short circuit risks.

[0017] As a further description of the above technical solution: the planar transformer body includes a magnetic core component fixedly connected to the middle of the shell, the interior of the magnetic core component is fixedly connected to a winding, and the interior of the winding is fixedly connected to a pin.

[0018] By adopting the above technical solution, the substrate of the PCB board in the winding is a ceramic substrate, which can quickly dissipate heat.

[0019] As a further description of the above technical solution: the inner diameter and outer diameter of the air inlet pipe, spiral air pipe and air outlet pipe are the same, the inner diameter and outer diameter of the spiral water pipe, water inlet pipe and water outlet pipe are the same, and the inner diameter of the spiral air pipe is larger than the outer diameter of the spiral water pipe.

[0020] By adopting the above technical solution, it is ensured that the spiral water pipe will not block the spiral air pipe when it is in the spiral air pipe, thereby allowing the coolant to circulate smoothly.

[0021] As a further description of the above technical solution: the first heat sink and the second heat sink are spaced apart inside the box, the inner end of the first heat sink is fixedly connected to the inner wall of the box, and the inner end of the second heat sink is at a certain distance from the inner wall of the box.

[0022] By adopting the above technical solution, the coolant can flow in a zigzag manner through the plate holes in the first heat sink and the gap between the inner end of the second heat sink and the box body, thereby allowing the coolant to stay in the box body for a longer time, allowing the coolant to fully contact the first heat sink and the second heat sink, ensuring that the heat in the coolant can be fully introduced into the first heat sink and the second heat sink, thereby facilitating rapid cooling of the coolant.

[0023] By means of the above technical solution, the planar transformer of a switching power supply of the present invention has at least the following beneficial effects:

[0024] Compared with the prior art, the planar transformer of the switching power supply is provided with a shell, a cooling device, a water tank and a through pipe, which is conducive to heat dissipation of the planar transformer body and has a good dust-proof effect while dissipating heat. By starting the water pump, the coolant inside the water tank can enter the spiral water pipe through the water inlet pipe and return to the water tank through the water outlet pipe, so that the coolant in the water tank can circulate in the spiral water pipe. By starting the air pump, the air in the shell can enter the spiral air pipe through the air inlet pipe and be discharged into the shell through the air outlet pipe, so that the air in the shell can circulate in the spiral air pipe. The coolant circulating in the spiral water pipe can further cool the spiral air pipe, and further cool the air in the spiral air pipe, so that the temperature of the air discharged from the air outlet pipe is lower, which is convenient for reducing the temperature of the air inside the shell, and further convenient for quickly cooling the planar transformer body. The air inlet pipe in the left cooling device is at the right rear, the air outlet pipe is at the right front, the water inlet pipe is at the left front, and the water outlet pipe is at the left rear. The air inlet pipe in the right cooling device is at the left front, the air outlet pipe is at the left rear, the water inlet pipe is at the right rear, and the water outlet pipe is at the right front, so that the flow directions of the air in the spiral air pipe and the coolant in the spiral water pipe are opposite, thereby making the flow speed of the air faster than that of the coolant, which is convenient for accelerating the heat exchange efficiency, and the coolant returning into the box body can flow in a zigzag shape through the plate holes in the first heat sink and the gap between the inner end of the second heat sink and the box body, thereby making the coolant stay in the box body for a longer time, so that the coolant can fully contact the first heat sink and the second heat sink, ensuring that the heat in the coolant can be fully introduced into the first heat sink and the second heat sink, so as to quickly cool the coolant, so as to ensure that the coolant can normally cool the air;

[0025] The outer side of the tube body is in contact with the spiral air pipe, so that the heat in the spiral air pipe can enter the tube body and then enter the heat dissipation fins. The heat dissipation fins are in direct contact with the outside air, which is convenient for directly dissipating the heat to the outside air, and can further dissipate the heat of the spiral air pipe, thereby facilitating the rapid dissipation of the air in the spiral air pipe. In addition, under the sealing of the sealing sleeve, the sealing ring and the sealing gasket, the interior of the shell is in a relatively sealed state, so that dust in the outside air will not enter the shell. While dissipating heat, it also ensures a good dust-proof effect, preventing excessive dust from easily clogging the air duct, reducing heat dissipation performance and causing electrical short circuit risks.

[0026] When the heat dissipation in the cooling fan is too low, the cooling fan will not be heated, and the dust accumulation in the cooling fan will be reduced, so the fans will not be heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic cross-sectional view of a planar transformer of a switching power supply proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of a planar transformer of a switching power supply proposed by the present invention;

[0029] Figure 3 This is a schematic diagram of the cross-section of the shell and the cross-section of the cooling device of a planar transformer of a switching power supply proposed by the present invention;

[0030] Figure 4 This is a schematic diagram of the overall structure of a current guide frame of a planar transformer of a switching power supply proposed by the present invention;

[0031] Figure 5 This is a schematic diagram of the cross section of the spiral air pipe and the overall structure of the spiral water pipe of a planar transformer of a switching power supply proposed by the present invention;

[0032] Figure 6 This is a schematic diagram of the overall structure of a water tank of a planar transformer of a switching power supply proposed by the present invention;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of a water tank of a planar transformer of a switching power supply proposed by the present invention;

[0034] Figure 8 This is a schematic cross-sectional view of a dust removal device for a planar transformer of a switching power supply proposed by the present invention;

[0035] Figure 9 A planar transformer for a switching power supply proposed by the present invention Figure 8 A in the middle is an enlarged structural diagram;

[0036] Figure 10 This is a schematic diagram of the overall structure of a through-tube of a planar transformer of a switching power supply proposed by the present invention.

[0037] Legend:

[0038] 1. Shell; 101. Shell; 102. Slot; 103. Sealing sleeve; 104. Placement hole; 105. Sealing ring; 2. Guide frame; 201. Frame; 202. Through hole; 203. Partition; 3. Cooling device; 301. Fixed shell; 302. Air pump; 303. Water pump; 304. Air inlet pipe; 305. Spiral air pipe; 306. Air outlet pipe; 307. Spiral water pipe; 308. Water inlet pipe; 309. Water outlet pipe; 4. Water tank; 401. Box; 402. Sealing cover; 403. Block; 404. First heat sink; 405. Second heat sink; 406, groove; 407, water inlet; 408, water outlet; 409, dust removal device; 4091, air shell; 4092, heat conducting rod; 4093, scraper; 4094, scraping hole; 4095, rod sleeve; 4096, connecting rod; 4097, plate sleeve; 4098, movable plate; 4099, thermal insulation pad; 5, through pipe; 501, tube body; 502, sealing gasket; 503, fixed disk; 504, shifting post; 505, heat dissipation fin; 6, planar transformer body; 601, core assembly; 602, winding; 603, pin. DETAILED DESCRIPTION

[0039] Reference Figure 1-10The present invention provides a planar transformer for a switching power supply: comprising a housing 1, a planar transformer body 6 fixedly connected to the middle of the housing 1, a water tank 4 movably connected to both sides of the housing 1, a cooling device 3 fixedly connected to the side of the water tank 4 close to the planar transformer body 6, a guide frame 2 fixedly connected to the side of the cooling device 3 close to the planar transformer body 6, a through pipe 5 is placed inside the housing 1 and the cooling device 3, the cooling device 3 comprises a fixed shell 301 fixedly connected to the side of the water tank 4 close to the planar transformer body 6, a water inlet pipe 308 and a water outlet pipe 309 fixedly connected to the side of the fixed shell 301 close to the water tank 4, the water inlet pipe 308 is used for the entry of coolant, and the water outlet pipe 309 is used for cooling Liquid is discharged, a spiral water pipe 307 is fixedly connected between the water inlet pipe 308 and the water outlet pipe 309, and an air inlet pipe 304 and an air outlet pipe 306 are fixedly connected to the side of the fixed shell 301 away from the water tank 4. The air inlet pipe 304 is used for the intake of air, and the air outlet pipe 306 is used for the discharge of air. A spiral air pipe 305 is fixedly connected between the air inlet pipe 304 and the air outlet pipe 306. The spiral air pipe 305 and the spiral water pipe 307 are both spiral structures, and a part of the spiral water pipe 307 is inside the spiral air pipe 305, and the spiral direction of the spiral air pipe 305 is opposite to that of the spiral water pipe 307. The spiral air pipe 305 is fixedly connected to the spiral water pipe 307, and an air pump 302 is installed on the air outlet pipe 306. 9 is equipped with a water pump 303. By starting the water pump 303, the coolant inside the water tank 4 can enter the spiral water pipe 307 through the water inlet pipe 308 and flow back to the water tank 4 through the water outlet pipe 309, so that the coolant in the water tank 4 can circulate in the spiral water pipe 307. By starting the air pump 302, the air in the shell 1 can enter the spiral air pipe 305 through the air inlet pipe 304 and be discharged to the shell 1 through the air outlet pipe 306, so that the air in the shell 1 can circulate in the spiral air pipe 305. The coolant circulating in the spiral water pipe 307 can further cool the spiral air pipe 305, and further cool the air in the spiral air pipe 305. The temperature of the air discharged from the air outlet pipe 306 is lower, which is convenient for lowering the temperature of the air inside the shell 1, and further convenient for quickly cooling the planar transformer body 6. The air inlet pipe 304 in the left cooling device 3 is located at the right rear, the air outlet pipe 306 is located at the right front, the water inlet pipe 308 is located at the left front, and the water outlet pipe 309 is located at the left rear. The air inlet pipe 304 in the right cooling device 3 is located at the left front, the air outlet pipe 306 is located at the left rear, the water inlet pipe 308 is located at the right rear, and the water outlet pipe 309 is located at the right front. The flow directions of the air in the spiral air pipe 305 and the coolant in the spiral water pipe 307 are opposite, thereby making the flow speed of the air faster relative to the coolant, which is convenient for accelerating the heat exchange efficiency.

[0040] Furthermore, the housing 1 includes a shell 101, and a card slot 102 is provided on the inner side of the shell 101, and the card slot 102 is used to insert the card block 403. A sealing sleeve 103 is fixedly connected to the inner side of the shell 101, and the sealing sleeve 103 is used to ensure the sealing between the box body 401 and the shell 101. A placement hole 104 is provided inside the shell 101, and the placement hole 104 is used to place the through pipe 5. A sealing ring 105 is fixedly connected to the bottom of the inside of the shell 101, and the sealing ring 105 is used to ensure the sealing between the pin 603 and the shell 101. The sealing ring 105 and the sealing sleeve 103 are both made of rubber.

[0041] Furthermore, the guide frame 2 includes a frame 201 fixedly connected to the fixed shell 301 on the side close to the planar transformer body 6. A through hole 202 is provided on the side of the frame 201 close to the planar transformer body 6. The through hole 202 is used for the passage of air to ensure that the exhausted air can be more evenly distributed in the shell 101, and to allow air from multiple locations to be inhaled into the air intake pipe 304, to prevent the cooling effect from being poor due to a small range of inhaled air. A partition 203 is fixedly connected to the inside of the frame 201, and the partition 203 is used to block the incoming and exhausted air to ensure that the air with a lower temperature that has just been discharged will not be inhaled too much into the air intake pipe 304.

[0042] Furthermore, the water tank 4 includes a box body 401 movably connected to both sides of the interior of the shell 101, and a sealing cover 402 is threadedly connected to the top of the box body 401. The box body 401 is used to place the coolant, and the coolant can be added to the box body 401 by unscrewing the sealing cover 402. The front and rear sides of the box body 401 are fixedly connected with a clamping block 403, and the clamping block 403 is made of rubber material. The clamping block 403 can be deformed by squeezing, so that the box body 401 can be smoothly placed in the shell 101, and when the clamping block 403 is aligned with the clamping slot 102, it can be clamped into the clamping slot 102, so that the box body 401 can be fixed. The interior of the box body 401 is fixedly connected with a first heat sink 404 and a second heat sink 405. The first heat sink 404 and the second heat sink 405 are both made of copper material. The thermal conductivity is good, which facilitates the rapid dissipation of heat in the coolant. The interior of the first heat sink 404 is provided with plate holes for the coolant to pass through, and the interior of the box body 401 is provided with a groove 406. The setting of the groove 406 facilitates the pulling out of the box body 401 from the shell 101. The box body 401 is provided with a water inlet 407 and a water outlet 408 on the side close to the cooling device 3. The water inlet 407 is fixedly connected to the water outlet pipe 309 so that the coolant flowing out of the water outlet pipe 309 can enter the box body 401, and the water outlet 408 is fixedly connected to the water inlet pipe 308 so that the coolant in the box body 401 can enter the water inlet pipe 308. A dust removal device 409 is fixedly connected above and below the interior of the box body 401. The dust removal device 409 is used to scrape off dust attached to the surfaces of the first heat sink 404 and the second heat sink 405.

[0043] Furthermore, the dust removal device 409 includes an air shell 4091 fixedly connected to the upper and lower parts of the box body 401. The front and rear sides of the air shell 4091 are at a certain distance from the inner wall of the box body 401 to ensure that the air shell 4091 will not block the sealing cover 402 so that the coolant cannot be introduced into the box body 401. A thermal insulation pad 4099 is fixedly connected to one side of the air shell 4091 near the center of the box body 401. The air shell 4091 is made of alumina ceramic material, and the thermal insulation pad 4099 is made of ceramic fiber material, which has a good thermal insulation effect, ensuring that the temperature in the box body 401 will not enter the air shell 4091, and the outer side of the thermal insulation pad 4099 is coated with a waterproof layer to avoid thermal insulation failure caused by contact with water. The inner surface of the air shell 4091 and the thermal insulation pad 4099 are The heat conducting rod 4092 is fixedly connected to the gas shell 4091, and the heat conducting rod 4092 is made of copper and has good heat conduction effect. The inside of the gas shell 4091 is movably connected to the connecting rod 4096, and the outside of the connecting rod 4096 is movably connected to the rod sleeve 4095. The rod sleeve 4095 is fixedly connected to the box body 401, and the connecting rod 4096 can move inside the rod sleeve 4095 and the gas shell 4091. The inner end of the connecting rod 4096 is fixedly connected to the movable plate 4098, and the outside of the movable plate 4098 is fixedly connected to the plate sleeve 4097. The plate sleeve 4097 and the rod sleeve 4095 are both made of fluororubber, which are used to ensure better sealing between the movable plate 4098 and the gas shell 4091 and the connecting rod 4096 and the box body 401. The movable plate 4098 and the plate sleeve 4097 can move inside the gas shell 4091, and the interior of the gas shell 4091 is filled with carbon dioxide. The movable plate 4098 divides the left and right sides of the gas shell 4091 into two parts. Under normal conditions, the air pressure on the left and right sides of the movable plate 4098 is the same. The outer end of the connecting rod 4096 is fixedly connected to the scraper 4093. The scraper 4093 is provided with a scraping hole 4094 inside. The scraping hole 4094 is adapted to the first heat sink 404 and the second heat sink 405, so that the scraper 4093 fits the outer sides of the first heat sink 404 and the second heat sink 405. When the first heat sink 404 and the second heat sink 405 are used for a long time and a lot of dust is attached to the outer sides, the first heat sink 404 and the second heat sink 405 are pressed against the box body 401. The heat dissipation effect of the coolant in the air is reduced, thereby making the temperature of the coolant higher. The temperature of the coolant will be introduced into the air shell 4091 through the heat-conducting rod 4092, thereby causing the carbon dioxide in the space of the air shell 4091 where the heat-conducting rod 4092 is located to expand under the action of temperature, thereby causing the air pressure in the space of the air shell 4091 where the heat-conducting rod 4092 is located to increase. When the air pressure reaches a level that overcomes the friction between the rod sleeve 4095 and the connecting rod 4096, the friction between the plate sleeve 4097 and the air shell 4091, and the friction between the scraper 4093 and the first heat sink 404 and the second heat sink 405, the movable plate 4098 will drive the connecting rod 4096 so that the scraper 4093 can scrape off the dust attached to the surfaces of the first heat sink 404 and the second heat sink 405.This allows the first heat sink 404 and the second heat sink 405 to return to a good heat dissipation state, thereby reducing the temperature of the coolant, which in turn reduces the temperature of the heat conducting rod 4092, allowing the air pressure in the air shell 4091 where the heat conducting rod 4092 is located to return to normal, allowing the movable plate 4098 to return to its original position, until the first heat sink 404 and the second heat sink 405 again experience poor heat dissipation due to excessive dust adhesion.

[0044] Furthermore, the through pipe 5 includes a tube body 501 placed inside the shell 101 and the fixed shell 301, and the inner side of the tube body 501 is fixedly connected with a heat dissipation fin 505. The tube body 501 and the heat dissipation fin 505 are both made of copper and have good thermal conductivity. The outer side of the tube body 501 fits with the spiral air pipe 305, so that the heat in the spiral air pipe 305 can enter the tube body 501 and then enter the heat dissipation fin 505. The heat dissipation fin 505 is in direct contact with the outside air, which is convenient for dissipating the heat directly to the outside air, and can further dissipate the heat of the spiral air pipe 305, thereby facilitating the rapid heat dissipation of the air in the spiral air pipe 305. The front and rear sides of the outer side of the tube body 501 are both threadedly connected with a fixed disk 503, and the side of the fixed disk 503 close to the center of the tube body 501 is fixedly connected with a sealing gasket 502. The sealing gasket 502 is used to ensure the sealing between the shell 101 and the tube body 501. The disc 503 is fixedly connected to a lever 504 on one side away from the center of the tube body 501. The tube body 501 is inserted into the shell 101 and the fixed shell 301, and then the fixed disc 503 is put on the front and back sides of the outside of the tube body 501, and the fixed disc 503 is rotated on the outside of the tube body 501 by twisting the lever 504. The fixed disc 503 is moved back and forth on the outside of the tube body 501 by the forward and reverse rotation of the fixed disc 503. The movement enables the sealing gasket 502 to be close to the shell 101, so that the tube body 501 can be fixed. Under the sealing of the sealing sleeve 103, the sealing ring 105 and the sealing gasket 502, the interior of the shell 101 is in a relatively sealed state, so that dust in the outside air will not enter the shell 101. While dissipating heat, it also ensures a good dust-proof effect, preventing excessive dust from easily clogging the air duct, reducing heat dissipation performance and causing electrical short circuit risks.

[0045] Furthermore, the planar transformer body 6 includes a magnetic core component 601 fixedly connected to the middle of the shell 101, the interior of the magnetic core component 601 is fixedly connected to a winding 602, the interior of the winding 602 is fixedly connected to a pin 603, and the substrate of the PCB board in the winding 602 is a ceramic substrate, which can quickly dissipate heat.

[0046] Furthermore, the inner diameter and outer diameter of the air inlet pipe 304, the spiral air pipe 305 and the air outlet pipe 306 are the same, the inner diameter and outer diameter of the spiral water pipe 307, the water inlet pipe 308 and the water outlet pipe 309 are the same, and the inner diameter of the spiral air pipe 305 is larger than the outer diameter of the spiral water pipe 307, ensuring that the spiral water pipe 307 will not block the spiral air pipe 305 when it is in the spiral air pipe 305, thereby allowing the coolant to circulate smoothly.

[0047] Furthermore, the first heat sink 404 and the second heat sink 405 are arranged at intervals inside the box body 401, the inner end of the first heat sink 404 is fixedly connected to the inner wall of the box body 401, and the inner end of the second heat sink 405 is at a certain distance from the inner wall of the box body 401, so that the coolant can flow in a zigzag manner through the plate holes in the first heat sink 404 and the gap between the inner end of the second heat sink 405 and the box body 401, thereby allowing the coolant to stay in the box body 401 for a longer time, allowing the coolant to fully contact the first heat sink 404 and the second heat sink 405, ensuring that the heat in the coolant can be fully introduced into the first heat sink 404 and the second heat sink 405, so as to facilitate rapid cooling of the coolant.

[0048] Working principle: When in use, the water pump 303 is started so that the coolant inside the water tank 4 can enter the spiral water pipe 307 through the water inlet pipe 308, and flow back to the water tank 4 through the water outlet pipe 309, so that the coolant in the water tank 4 can circulate in the spiral water pipe 307, and the air pump 302 is started so that the air in the shell 1 can enter the spiral air pipe 305 through the air inlet pipe 304, and be discharged to the shell 1 through the air outlet pipe 306, so that the air in the shell 1 can circulate in the spiral air pipe 305, and the coolant circulating in the spiral water pipe 307 can further cool the spiral air pipe 305, and further cool the air in the spiral air pipe 305, so that the air discharged from the air outlet pipe 306 is The temperature is lower, which is convenient for lowering the temperature of the air inside the shell 1, and thus is convenient for quickly cooling the planar transformer body 6, and the air inlet pipe 304 in the left cooling device 3 is at the right rear, the air outlet pipe 306 is at the right front, the water inlet pipe 308 is at the left front, and the water outlet pipe 309 is at the left rear. The air inlet pipe 304 in the right cooling device 3 is at the left front, the air outlet pipe 306 is at the left rear, the water inlet pipe 308 is at the right rear, and the water outlet pipe 309 is at the right front, so that the flow directions of the air in the spiral air pipe 305 and the coolant in the spiral water pipe 307 are opposite, thereby making the flow speed of the air faster than that of the coolant, which is convenient for accelerating the heat exchange efficiency, and the coolant returning to the box 401 can pass through the first heat sink 404. The gap between the plate hole and the inner end of the second heat sink 405 and the box body 401 flows in a zigzag manner, thereby allowing the coolant to stay in the box body 401 for a longer time, allowing the coolant to fully contact the first heat sink 404 and the second heat sink 405, ensuring that the heat in the coolant can be fully introduced into the first heat sink 404 and the second heat sink 405, facilitating rapid cooling of the coolant, and ensuring that the coolant can normally cool the air, and the outer side of the tube body 501 is in contact with the spiral air pipe 305, so that the heat in the spiral air pipe 305 can enter the tube body 501 and then enter the heat dissipating fins 505. The heat dissipating fins 505 are in direct contact with the outside air, facilitating the direct dissipation of heat to the outside air, which can The spiral air pipe 305 is further cooled, thereby facilitating rapid cooling of the air in the spiral air pipe 305. Under the sealing of the sealing sleeve 103, the sealing ring 105 and the sealing gasket 502, the interior of the housing 101 is in a relatively sealed state, so that dust in the external air will not enter the housing 101. While dissipating heat, it also ensures a good dustproof effect, preventing excessive dust from easily clogging the air duct, reducing the heat dissipation performance and causing the risk of electrical short circuit. Moreover, when the first heat sink 404 and the second heat sink 405 have a lot of dust attached to the outside due to long-term use, the heat dissipation effect of the first heat sink 404 and the second heat sink 405 on the coolant in the box 401 is reduced, thereby causing the temperature of the coolant to be higher.The temperature of the coolant will be introduced into the air shell 4091 through the heat conducting rod 4092, thereby causing the carbon dioxide in the air shell 4091 space where the heat conducting rod 4092 is located to expand under the action of the temperature, thereby increasing the air pressure in the air shell 4091 space where the heat conducting rod 4092 is located. When the air pressure reaches a level that overcomes the friction between the rod sleeve 4095 and the connecting rod 4096, the friction between the plate sleeve 4097 and the air shell 4091, and the friction between the scraper 4093 and the first heat dissipation plate 404 and the second heat dissipation plate 405, the movable plate 4098 will drive the connecting rod 4096 to make the scraper 4093 can scrape away dust adhering to the surfaces of the first and second heat sinks 404 and 405, thereby restoring the heat dissipation performance of the first and second heat sinks 404 and 405 to a good state. This in turn lowers the temperature of the coolant, which in turn lowers the temperature of the heat conducting rod 4092, allowing the air pressure in the air shell 4091 where the heat conducting rod 4092 is located to return to normal, allowing the movable plate 4098 to return to its original position. This is until the first and second heat sinks 404 and 405 experience poor heat dissipation due to excessive dust adhering to the coolant again.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A planar transformer for a switching power supply, comprising a housing (1), characterized in that: A planar transformer body (6) is fixedly connected to the middle of the interior of the housing (1), a water tank (4) is movably connected to both sides of the interior of the housing (1), a cooling device (3) is fixedly connected to the side of the water tank (4) close to the planar transformer body (6), a guide frame (2) is fixedly connected to the side of the cooling device (3) close to the planar transformer body (6), a through pipe (5) is placed inside the housing (1) and the cooling device (3), and the cooling device (3) includes a fixed shell (301) fixedly connected to the side of the water tank (4) close to the planar transformer body (6), and the fixed shell (301) close to the water tank (4 ) is fixedly connected to a water inlet pipe (308) and a water outlet pipe (309) on one side thereof, a spiral water pipe (307) is fixedly connected between the water inlet pipe (308) and the water outlet pipe (309), an air inlet pipe (304) and an air outlet pipe (306) are fixedly connected to the side of the fixed shell (301) away from the water tank (4), a spiral air pipe (305) is fixedly connected between the air inlet pipe (304) and the air outlet pipe (306), the spiral air pipe (305) is fixedly connected to the spiral water pipe (307), an air pump (302) is installed on the air outlet pipe (306), and a water pump (303) is installed on the water outlet pipe (309).

2. The planar transformer of a switching power supply according to claim 1, wherein: The housing (1) comprises a shell (101), a card slot (102) is provided on the inner side of the shell (101), a sealing sleeve (103) is fixedly connected to the inner side of the shell (101), a placement hole (104) is provided inside the shell (101), and a sealing ring (105) is fixedly connected to the lower part of the inside of the shell (101).

3. The planar transformer of a switching power supply according to claim 1, wherein: The guide frame (2) comprises a frame body (201) fixedly connected to a side of a fixed shell (301) close to a planar transformer body (6); a through hole (202) is provided on a side of the frame body (201) close to the planar transformer body (6); and a partition (203) is fixedly connected to the interior of the frame body (201).

4. The planar transformer of a switching power supply according to claim 1, wherein: The water tank (4) comprises a box body (401) movably connected to both sides of the interior of the shell (101); a sealing cover (402) is threadedly connected to the top of the box body (401); a clamping block (403) is fixedly connected to the front and rear sides of the box body (401); a first heat dissipation plate (404) and a second heat dissipation plate (405) are fixedly connected to the interior of the box body (401); a groove (406) is provided inside the box body (401); a water inlet (407) and a water outlet (408) are provided on a side of the box body (401) close to the cooling device (3); and a dust removal device (409) is fixedly connected to the top and bottom of the interior of the box body (401).

5. The planar transformer of a switching power supply according to claim 4, characterized in that: The dust removal device (409) includes an air shell (4091) fixedly connected to the upper and lower parts of the box body (401); a heat insulating pad (4099) is fixedly connected to one side of the air shell (4091) close to the center of the box body (401); a heat conducting rod (4092) is fixedly connected to the inside of the air shell (4091) and the heat insulating pad (4099); a connecting rod (4096) is movably connected to the inside of the air shell (4091); a rod sleeve (4095) is movably connected to the outside of the connecting rod (4096); a movable plate (4098) is fixedly connected to the inner end of the connecting rod (4096); a plate sleeve (4097) is fixedly connected to the outer end of the movable plate (4098); a scraper (4093) is fixedly connected to the outer end of the connecting rod (4096); and a scraping hole (4094) is provided inside the scraper (4093).

6. The planar transformer of a switching power supply according to claim 1, wherein: The through pipe (5) comprises a tube body (501) placed inside the housing (101) and the fixed shell (301); a heat dissipation fin (505) is fixedly connected to the inner side of the tube body (501); a fixing plate (503) is threadedly connected to the front and rear sides of the outer side of the tube body (501); a sealing gasket (502) is fixedly connected to the side of the fixing plate (503) close to the center of the tube body (501); and a shifting post (504) is fixedly connected to the side of the fixing plate (503) away from the center of the tube body (501).

7. The planar transformer of a switching power supply according to claim 1, wherein: The planar transformer body (6) comprises a magnetic core component (601) fixedly connected to the center of the housing (101), a winding (602) fixedly connected to the interior of the magnetic core component (601), and a pin (603) fixedly connected to the interior of the winding (602).

8. The planar transformer of a switching power supply according to claim 1, wherein: The inner diameter and outer diameter of the air inlet pipe (304), the spiral air pipe (305) and the air outlet pipe (306) are the same; the inner diameter and outer diameter of the spiral water pipe (307), the water inlet pipe (308) and the water outlet pipe (309) are the same; the inner diameter of the spiral air pipe (305) is larger than the outer diameter of the spiral water pipe (307).

9. The planar transformer of a switching power supply according to claim 4, characterized in that: The first heat dissipation plate (404) and the second heat dissipation plate (405) are arranged at intervals inside the box body (401); the inner end of the first heat dissipation plate (404) is fixedly connected to the inner wall of the box body (401); and the inner end of the second heat dissipation plate (405) is at a certain distance from the inner wall of the box body (401).

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