Heat exchanger and inverter high-protection and high-efficiency heat dissipation system

Abstract

The invention relates to the field of heat dissipation of electronic equipment, in particular to a heat exchanger and an inverter high-protection and efficient heat dissipation system.The heat exchanger comprises a mounting plate, an outer circulation air inlet and an adjusting mechanism, the mounting plate is fixedly connected with a mounting frame located on the outer circulation air inlet, and the top and the bottom of the mounting frame are open; a filter screen is fixedly connected in the mounting frame, the adjusting mechanism comprises an adjusting scraper arranged above the filter screen, the adjusting scraper is in contact with the filter screen, and a driving mechanism for driving the adjusting scraper to slide along the filter screen is mounted on the mounting plate. The problem that the heat exchange efficiency of the heat exchanger is affected is solved.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation in electronic devices, and in particular to a high-protection, high-efficiency heat dissipation system for heat exchangers and inverters. Background Technology

[0002] With the development of power electronic devices, power output and integration are increasing, placing higher demands on heat dissipation. In the emerging energy storage field, inverters play a crucial and indispensable role. Inverters are commonly used in harsh environments such as deserts and coastlines, and need to be used in conjunction with battery cells; therefore, they are usually integrated into energy storage cabinets.

[0003] In related technologies, the high-protection, high-efficiency heat dissipation system of the inverter includes a cabinet, which is divided into an inner cavity and an outer circulation cavity. The inner cavity includes power devices, power boards, disconnect switches, an internal circulation fan, and IGBTs. The outer circulation cavity includes a heat sink, inductors, a heat exchanger, and an external circulation fan. The heat exchanger includes a heat exchanger mounting plate, a first partition, a second partition, a first sub-channel, a second sub-channel, an internal circulation air inlet, an internal circulation air outlet, an external circulation air inlet, an external circulation air outlet, a first air collection chamber, and a second air collection chamber. The first partition... The heat exchanger is divided into a first sub-channel and a second sub-channel. The first sub-channel is connected to the outside and is the external circulation cold air channel. The second sub-channel is connected to the inner cavity and is the internal circulation hot air channel. The second partition seals the lower part of the first sub-channel, changing the flow path of the external circulation cold air channel and allowing it to have sufficient indirect contact with the internal circulation hot air. The first air collecting chamber fixes the internal circulation fan on the heat exchanger, allowing the internal circulation hot air to flow through the second sub-channel. The second air collecting chamber fixes the external circulation fan on the heat exchanger, allowing the external circulation cold air to flow through the first sub-channel.

[0004] Regarding the aforementioned technologies, during the operation of the heat exchanger, when external air flows through the external circulation air inlet and the first sub-channel, external dust tends to accumulate in the air inlet and the first sub-channel. If it is not cleaned in time, it will affect the heat exchange efficiency of the heat exchanger. Summary of the Invention To address the issue of reduced heat exchange efficiency in heat exchangers, this invention provides a high-protection, high-efficiency heat dissipation system for heat exchangers and inverters.

[0005] The heat exchanger provided by this invention adopts the following technical solution: A heat exchanger includes a mounting plate, an external circulation air inlet, and an adjustment mechanism. A mounting frame located on the external circulation air inlet is fixedly connected to the mounting plate. The top and bottom of the mounting frame are open. A filter screen is fixedly connected to the mounting frame. The adjustment mechanism includes an adjustment scraper disposed above the filter screen. The adjustment scraper contacts the filter screen. A drive mechanism for driving the adjustment scraper to slide along the filter screen is mounted on the mounting plate.

[0006] Preferably, a cleaning mechanism is installed in the mounting frame. The cleaning mechanism includes a collection frame disposed below the filter screen. The top of the collection frame is open. A cleaning scraper that contacts the filter screen is installed on the collection frame. The driving mechanism can drive the collection frame to slide along the filter screen.

[0007] Preferably, cleaning scrapers are slidably installed on both sides of the top of the collection frame, the two cleaning scrapers move towards each other, and a moving part for driving the cleaning scrapers is installed on the collection frame.

[0008] Preferably, the mounting frame has a discharge port for the collection frame to pass through, and a sealing door is hinged to the discharge port. A torsion spring is sleeved on the hinge shaft installed in the sealing door, and the adjusting scraper is located above the collection frame.

[0009] Preferably, a guide hopper is fixedly connected to the side wall of the collection frame, and a discharge port communicating with the guide hopper is opened on the collection frame. A stop gate is hinged to the discharge port, and a torsion spring is sleeved on the hinge shaft installed in the stop gate.

[0010] Preferably, the collection frame has a collection groove for the cleaning scraper to slide on. The moving part includes a cleaning screw rotatably installed in the collection groove. The cleaning screw is threadedly connected to the cleaning scraper. The cleaning screw extends to the outside of the collection frame. A cleaning gear is fixedly connected to the cleaning screw. A cleaning rack that meshes with the cleaning gear is slidably installed on the collection frame. A fixing plate is fixedly connected to the mounting plate. A stop bar is fixedly connected to both the fixing plate and the mounting frame. The stop bar can contact the cleaning rack.

[0011] Preferably, the driving mechanism includes a motor fixedly connected to a fixed plate, a driving screw rotatably mounted in the mounting frame, the driving screw being fixedly connected to the output shaft of the motor, a driving plate fixedly connected to the collecting frame, and the driving screw being threadedly connected to the driving plate.

[0012] Preferably, a pusher plate is slidably installed in the collection frame, and a pusher block that can contact the baffle is fixedly connected to the pusher plate. A reciprocating screw is rotatably installed in the collection frame and is threadedly connected to the pusher plate. A transmission component is installed on the fixed plate, and the drive screw can drive the reciprocating screw to rotate through the transmission component.

[0013] Preferably, the transmission component includes a transmission shaft rotatably mounted on a fixed plate, a conveyor belt sleeved between the transmission shaft and the drive screw, a first bevel gear fixedly connected to the transmission shaft, the reciprocating screw extending to the outside of the collection frame and fixedly connected to a second bevel gear, the second bevel gear being able to mesh with the first bevel gear, and a first spring being fixedly connected to the mounting frame and able to abut against the drive plate.

[0014] The present invention provides a high-protection, high-efficiency heat dissipation system for inverters, which adopts the following technical solution: A high-protection, high-efficiency heat dissipation system for an inverter includes a cabinet, which is divided into an inner cavity and an outer circulation cavity. The inner cavity includes power devices, a power board, a disconnect switch, an internal circulation fan, and IGBTs. The outer circulation cavity includes a heat sink, an inductor, a heat exchanger, and an external circulation fan. The heat exchanger includes a mounting plate, a first partition, a second partition, a first sub-channel, a second sub-channel, an internal circulation air inlet, an internal circulation air outlet, an external circulation air inlet, an external circulation air outlet, a first air collecting chamber, and a second air collecting chamber.

[0015] In summary, the present invention has at least the following beneficial technical effects: 1. During the operation of the heat exchanger, outside air enters the first sub-channel through the filter screen. The filter screen blocks dust in the air. After a period of time, the drive mechanism is activated. The drive mechanism drives the adjusting scraper to slide along the filter screen, which can scrape off the dust on the filter screen, avoiding clogging of the filter screen. At the same time, it prevents dust from entering the first sub-channel and causing clogging of the first sub-channel, thus solving the problem of affecting the heat exchange efficiency of the heat exchanger. 2. Start the drive mechanism. The drive mechanism drives the collection frame to slide along the filter screen. The collection frame drives the cleaning scraper to clean the dust at the bottom of the filter screen. At the same time, the scraped dust falls into the collection frame to collect the dust and prevent the dust from falling back into the first sub-channel, which further solves the problem of affecting the heat exchange efficiency of the heat exchanger. 3. When the drive plate moves the collection frame to the outside of the mounting frame, the drive screw drives the reciprocating screw to rotate through the transmission component. The reciprocating screw drives the pusher plate to move. The pusher plate pushes the dust in the collection frame to one side of the collection frame. When the pusher block contacts the baffle, the pusher block pushes the baffle to flip, so that the dust can be discharged from the discharge port. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the inverter's high protection and high-efficiency heat dissipation system according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the external circulation cavity in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the inner cavity structure according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the heat exchanger according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the external circulation air inlet according to an embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the adjustment mechanism according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of the movable component according to an embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0025] Figure 10 This is a schematic diagram of the purging mechanism according to an embodiment of the present invention.

[0026] Figure 11 This is a schematic diagram of the structure of the collection frame according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Cabinet; 11. Internal circulation fan; 12. External circulation fan; 2. Heat exchanger; 21. Mounting plate; 211. Fixing plate; 22. First partition; 23. Second partition; 24. External circulation air inlet; 25. External circulation air outlet; 26. Internal circulation air inlet; 27. Internal circulation air outlet; 28. Mounting frame; 281. Sealing door; 29. ​​Filter screen; 3. Adjustment mechanism; 31. Adjustment plate; 32. Adjustment scraper; 33. Adjustment screw; 331. Adjustment gear; 34. Adjustment rack; 341. Connecting rod; 35. Push rod; 4. Cleaning mechanism; 41. Collection frame; 411. Guide hopper; 412. Baffle; 42. Cleaning scraper; 43. Cleaning screw; 431. Cleaning gear; 44. Cleaning rack; 45. Baffle rod; 46. 461. Pusher plate; 47. Reciprocating screw; 471. Second bevel gear; 5. Drive mechanism; 51. Motor; 52. Drive screw; 53. Drive plate; 54. Transmission shaft; 541. First bevel gear; 55. First spring; 56. First screw; 561. First gear; 57. First rotating shaft; 571. Second gear; 58. Second rotating shaft; 581. Third gear; 6. Cleaning mechanism; 61. Cleaning screw; 62. Cleaning vertical plate; 63. Cleaning plate; 64. Cleaning spring; 65. Cleaning column; 7. Blowing mechanism; 71. Air pipe; 72. Air storage box; 73. Connecting pipe; 74. Valve shaft; 741. Fourth gear; 75. Air pressure plate; 76. Air pressure spring; 77. Air inflator box; 78. Inflating plate; 79. Inflating rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 11 The present invention will be described in further detail below.

[0029] This invention discloses a high-protection, high-efficiency heat dissipation system for a heat exchanger and inverter. (Refer to...) Figures 1 to 6 The heat exchanger includes a mounting plate 21, an external circulation air inlet 24, and an adjustment mechanism 3. A mounting frame 28 located on the external circulation air inlet 24 is fixedly connected to the mounting plate 21. The top and bottom of the mounting frame 28 are open. A filter screen 29 is fixedly connected to the top of the mounting frame 28. The adjustment mechanism 3 includes an adjustment scraper 32 disposed above the filter screen 29. The adjustment scraper 32 contacts the filter screen 29. A drive mechanism 5 is installed on the mounting plate 21 to drive the adjustment scraper 32 to slide along the filter screen 29. During the operation of the heat exchanger 2, external air enters the first sub-channel through the filter screen 29. The filter screen 29 blocks dust in the air. After a period of time, the drive mechanism 5 is activated. The drive mechanism 5 drives the adjustment scraper 32 to slide along the filter screen 29, which can scrape off the dust on the filter screen 29, avoiding clogging of the filter screen 29 and preventing dust from entering the first sub-channel and causing clogging. This solves the problem of affecting the heat exchange efficiency of the heat exchanger 2.

[0030] Reference Figures 4 to 7 A cleaning mechanism 4 is installed in the mounting frame 28. The cleaning mechanism 4 includes a collection frame 41 located below the filter screen 29. The top of the collection frame 41 is open. A cleaning scraper 42 that contacts the filter screen 29 is installed on the collection frame 41. The driving mechanism 5 can drive the collection frame 41 to slide along the filter screen 29. When the driving mechanism 5 is activated, the driving mechanism 5 drives the collection frame 41 to slide along the filter screen 29. The collection frame 41 drives the cleaning scraper 42 to clean the dust at the bottom of the filter screen 29. At the same time, the scraped dust falls into the collection frame 41 for collection, preventing the dust from falling back into the first sub-channel. This further solves the problem of affecting the heat exchange efficiency of the heat exchanger 2.

[0031] Reference Figures 4 to 8 Cleaning scrapers 42 are slidably installed on both sides of the top of the collection frame 41. The two cleaning scrapers 42 move towards each other. The collection frame 41 is equipped with a moving part for driving the cleaning scrapers 42 to move. During forward movement, one cleaning scraper 42 cleans the bottom of the filter screen 29 while the other retracts. When moving in the reverse direction, the other cleaning scraper 42 cleans the bottom of the filter screen 29 while one retracts, to prevent the scraped dust from falling onto the outside of the collection frame 41.

[0032] The mounting frame 28 has a discharge port through which the collection frame 41 passes. A sealing door 281 is hinged to the discharge port. A torsion spring is sleeved on the hinge shaft installed in the sealing door 281. The adjusting scraper 32 is located above the collection frame 41. During the movement of the collection frame 41, the adjusting scraper 32 is always located above the collection frame 41. When the collection frame 41 moves to the outside of the mounting frame 28, the adjusting scraper 32 can scrape the dust above the filter screen 29 into the collection frame 41, thereby collecting the dust.

[0033] Reference Figures 4 to 11 A guide hopper 411 is fixedly connected to the side wall of the collection frame 41. A discharge port communicating with the guide hopper 411 is opened on the collection frame 41. A baffle 412 is hinged inside the discharge port. A torsion spring is sleeved on the hinge shaft installed in the baffle 412. When the collection frame 41 moves to the outside of the mounting frame 28, the dust in the collection frame 41 is discharged through the discharge port and slides into the external collection cylinder through the guide hopper 411.

[0034] Reference Figures 4 to 8The collection frame 41 has a collection groove for the cleaning scraper 42 to slide. The moving part includes a cleaning screw 43 rotatably installed in the collection groove. The cleaning screw 43 is threadedly connected to the cleaning scraper 42 and extends to the outside of the collection frame 41. A cleaning gear 431 is fixedly connected to the cleaning screw 43. A cleaning rack 44 that meshes with the cleaning gear 431 is slidably installed on the collection frame 41. A fixing plate 211 is fixedly connected to the mounting plate 21. The fixing plate 211 and the mounting frame 28 are both fixedly connected. A stop bar 45 is fixedly connected, and the stop bar 45 can contact the cleaning rack 44. During the movement of the collection frame 41, the collection frame 41 drives the cleaning rack 44 to move. When the cleaning rack 44 contacts the stop bar 45, the cleaning rack 44 slides relative to the collection frame 41. The cleaning rack 44 drives the cleaning gear 431 to rotate, the cleaning gear 431 drives the cleaning screw 43 to rotate, and the cleaning screw 43 drives the cleaning scraper 42 to move, so that the two cleaning scrapers 42 can move towards each other.

[0035] Reference Figures 4 to 7 The drive mechanism 5 includes a motor 51 fixedly connected to the fixed plate 211, a drive screw 52 rotatably mounted in the mounting frame 28, the drive screw 52 being fixedly connected to the output shaft of the motor 51, and a drive plate 53 fixedly connected to the collection frame 41, with the drive screw 52 threadedly connected to the drive plate 53; when the motor 51 is started, the motor 51 drives the drive screw 52 to move, the drive screw 52 drives the drive plate 53 to move, and the drive plate 53 drives the collection frame 41 to move.

[0036] Reference Figures 4 to 11 A pusher plate 46 is slidably installed in the collection frame 41. A pusher block 461 that can contact the baffle 412 is fixedly connected to the pusher plate 46. A reciprocating screw 47 is rotatably installed in the collection frame 41 and is threadedly connected to the pusher plate 46. A transmission component is installed on the fixed plate 211. The drive screw 52 can drive the reciprocating screw 47 to rotate through the transmission component. When the drive plate 53 moves the collection frame 41 to the outside of the mounting frame 28, the drive screw 52 drives the reciprocating screw 47 to rotate through the transmission component. The reciprocating screw 47 drives the pusher plate 46 to move. The pusher plate 46 pushes the dust in the collection frame 41 to one side of the collection frame 41. When the pusher block 461 contacts the baffle 412, the pusher block 461 pushes the baffle 412 to flip, so that the dust can be discharged from the discharge port.

[0037] The transmission components include a transmission shaft 54 ​​rotatably mounted on a fixed plate 211, a conveyor belt sleeved between the transmission shaft 54 ​​and the drive screw 52, ​​a first bevel gear 541 fixedly connected to the transmission shaft 54, a reciprocating screw 47 extending to the outside of the collection frame 41 and fixedly connected to a second bevel gear 471, the second bevel gear 471 being able to mesh with the first bevel gear 541, and a first spring 55 fixedly connected in the mounting frame 28, capable of abutting against the drive plate 53; when the collection frame 41 moves to the outside of the mounting frame 28, the drive plate 53 abuts against the first spring 55, and simultaneously the second bevel gear 471 meshes with the first bevel gear 541, the drive screw 52 drives the transmission shaft 54 ​​to rotate, the transmission shaft 54 ​​drives the first bevel gear 541 to rotate, the first bevel gear 541 drives the second bevel gear 471 to rotate, and the second bevel gear 471 drives the reciprocating screw 47 to rotate.

[0038] Reference Figures 5 to 8 A first screw 56 is rotatably mounted on a fixed plate 211, and an adjusting plate 31 is mounted on an adjusting scraper 32. The first screw 56 is threadedly connected to the adjusting plate 31, and a conveyor belt is sleeved between the first screw 56 and the drive shaft 54. The drive shaft 54 ​​drives the first screw 56 to rotate, the first screw 56 drives the adjusting plate 31 to move, and the adjusting plate 31 drives the adjusting scraper 32 to move.

[0039] An adjustment groove is provided on the adjustment plate 31, and an adjustment scraper 32 is slidably installed in the adjustment groove. An adjustment screw 33 is rotatably installed in the adjustment groove and is helically connected to the adjustment scraper 32. The adjustment screw 33 extends to the outside of the adjustment plate 31 and is fixedly connected to an adjustment gear 331. An adjustment rack 34 that meshes with the adjustment gear 331 is slidably installed on the adjustment plate 31. Push rods 35 are fixedly connected to both the mounting frame 28 and the fixed plate 211. The push rods 35 can abut against the adjustment rack 34. During the forward movement of the adjusting plate 31, the adjusting scraper 32 contacts the filter screen 29 and cleans the filter screen 29. When the adjusting plate 31 moves in the reverse direction, the push rod 35 pushes the adjusting rack 34 to move. The adjusting rack 34 drives the adjusting gear 331 to rotate. The adjusting gear 331 drives the adjusting screw 33 to rotate. The adjusting screw 33 drives the adjusting scraper 32 to separate from the filter screen 29, preventing the adjusting scraper 32 from pushing the dust back again, thereby preventing dust from remaining on the filter screen 29.

[0040] Reference Figures 7 to 9A cleaning mechanism 6 is installed on the adjusting plate 31. The cleaning mechanism 6 includes a cleaning screw 61 rotatably mounted on the adjusting plate 31, the thread on the cleaning screw 61 being a reciprocating thread. A cleaning vertical plate 62 is slidably mounted on the adjusting plate 31, the cleaning vertical plate 62 being threadedly connected to the cleaning screw 61. A cleaning plate 63 is slidably mounted on the bottom of the cleaning vertical plate 62. A cleaning spring 64 is fixedly connected between the cleaning plate 63 and the cleaning vertical plate 62. Multiple cleaning posts 65 are fixedly connected to the bottom of the cleaning plate 63, and the multiple cleaning posts 65 can be correspondingly set with the mesh holes on the filter screen 29; the cleaning mechanism removes the wastewater. The screw 61 rotates, causing the cleaning screw 61 to move the cleaning vertical plate 62 vertically. The cleaning vertical plate 62 then moves the cleaning plate 63, which in turn moves the cleaning column 65 into the mesh of the filter screen 29 to clean the dust in the mesh. At the same time, the adjusting plate 31 moves the cleaning vertical plate 62 horizontally, and the cleaning vertical plate 62 and the cleaning plate 63 slide relative to each other. When the cleaning column 65 separates from the mesh of the filter screen 29, the cleaning spring 64 moves the cleaning plate 63 back, allowing the cleaning column 65 to continue cleaning the mesh of the next row of filter screens 29.

[0041] A first gear 561, rotatably connected to an adjusting plate 31, is fitted onto a first screw 56. The first gear 561 is slidably connected to the first screw 56. A first rotating shaft 57 is rotatably mounted on the adjusting plate 31, and a second rotating shaft 58 is slidably mounted on the adjusting plate 31. A conveyor belt is fitted between the first rotating shaft 57 and the cleaning screw 61. A second gear 571 is fixedly connected to the first rotating shaft 57, and a third gear 581 is rotatably mounted on the second rotating shaft 58. The third gear 581 can simultaneously mesh with the first gear 561 and the second gear 571. During the rotation of the first screw 56, the first screw 56 drives the first gear 561 to rotate, the first gear 561 drives the third gear 581 to rotate, the third gear 581 drives the second gear 571 to rotate, the second gear 571 drives the first rotating shaft 57 to rotate, and the first rotating shaft 57 drives the cleaning screw 61 to rotate.

[0042] A connecting rod 341 is fixedly connected to the adjusting rack 34. The connecting rod 341 is fixedly connected to the second rotating shaft 58. When the adjusting rack 34 moves, the adjusting rack 34 drives the second rotating shaft 58 to move. At this time, the adjusting scraper 32 separates from the filter screen 29, and the third gear 581 separates from the first gear 561 and the second gear 571 at the same time.

[0043] Reference Figures 7 to 10A purging mechanism 7 is installed on the adjusting plate 31. The purging mechanism 7 includes an air pipe 71 fixedly connected to the adjusting plate 31. Multiple nozzles facing the filter screen 29 are provided at the bottom of the air pipe 71. An air storage box 72 is fixedly connected to the adjusting plate 31. The air storage box 72 and the air pipe 71 are connected via a connecting pipe 73. A valve shaft 74 is rotatably mounted on the connecting pipe 73. A valve capable of closing the connecting pipe 73 is fixedly connected to the valve shaft 74. A fourth gear 741 capable of meshing with the adjusting rack 34 is fixedly connected to the valve shaft 74. A pressure plate 75 is slidably installed in the air box 72, and a pressure spring 76 is fixedly connected between the pressure plate 75 and the air storage box 72. When the adjusting rack 34 drives the adjusting scraper 32 to separate from the filter screen 29, and the third gear 581 simultaneously separates from the first gear 561 and the second gear 571, the adjusting rack 34 drives the fourth gear 741 to rotate. The fourth gear 741 drives the valve to open, and the gas in the air storage box 72 is squeezed by the pressure spring 76 and enters the blowing pipe 71 through the connecting pipe 73 to blow away the dust on the filter screen 29.

[0044] An air inflator box 77 is fixedly connected to the adjusting plate 31. The air inflator box 77 has an air inlet at the top and a one-way valve in the air inlet. The air outlet is connected to the air storage box 72 through a pipe. An inflation plate 78 is installed in the air inflator box 77. The inflation plate 78 has a connection port and a one-way valve in the connection port. An inflation rod 79 extending to the outside of the air inflator box 77 is fixedly connected to the inflation plate 78. The inflation rod 79 is fixedly connected to the cleaning vertical plate 62. During the movement of the cleaning vertical plate 62, the cleaning vertical plate 62 drives the inflation rod 79 to move, and the inflation rod 79 drives the inflation plate 78 to move, thereby inflating the air storage box 72.

[0045] The implementation principle of a heat exchanger according to an embodiment of the present invention is as follows: During the operation of the heat exchanger 2, external air enters the first sub-channel through the filter screen 29. The filter screen 29 blocks dust in the air. After a period of time, the motor 51 is started, and the motor 51 drives the drive screw 52 to move. The drive screw 52 moves the collection frame 41, and the collection frame 41 drives the cleaning scraper 42 to clean the dust at the bottom of the filter screen 29. At the same time, the drive screw 52 drives the first screw 56 to rotate, and the first screw 56 drives the adjusting scraper 32 to clean the dust at the top of the filter screen 29. The first screw 56 drives the first rotating shaft 57 to rotate, and the first rotating shaft 57 drives the cleaning screw 61 to rotate. The cleaning screw 61 drives the cleaning column 65 to insert into the mesh of the filter screen 29 to clean the dust in the mesh. When the collection frame 41 moves... After moving to the outside of the mounting frame 28, the two cleaning scrapers 42 move towards each other. At the same time, the second bevel gear 471 meshes with the first bevel gear 541, driving the screw 52 to rotate the transmission shaft 54. The transmission shaft 54 ​​drives the reciprocating screw 47 to rotate, and the reciprocating screw 47 drives the pusher plate 46 to move, discharging the dust in the collection frame 41 from the discharge port. The adjusting rack 34 moves, causing the adjusting scraper 32 to separate from the filter screen 29. When the third gear 581 separates from the first gear 561 and the second gear 571, it drives the fourth gear 741 to rotate, causing the valve in the connecting pipe 73 to open. When the collection frame 41 moves in the opposite direction, the gas in the air storage box 72 is squeezed by the air pressure spring 76 and enters the blowing pipe 71 through the connecting pipe 73 to blow away the dust on the filter screen 29.

[0046] Reference Figures 1 to 4 A high-protection, high-efficiency heat dissipation system for an inverter includes a cabinet 1, which is divided into an inner cavity and an outer circulation cavity. The inner cavity includes power devices, a power board, a disconnect switch, an internal circulation fan 11, and IGBTs. The outer circulation cavity includes a heat sink, an inductor, a heat exchanger 2, and an external circulation fan 12. The heat exchanger 2 includes a mounting plate 21, a first partition 22, a second partition 23, a first sub-channel, a second sub-channel, an internal circulation air inlet 26, an internal circulation air outlet 27, an external circulation air inlet 24, an external circulation air outlet 25, a first air collection chamber, and a second air collection chamber. The partition 22 divides the heat exchanger 2 into a first sub-channel and a second sub-channel. The first sub-channel is connected to the outside and is an external circulation cold air channel. The second sub-channel is connected to the inner cavity and is an internal circulation hot air channel. The second partition 23 seals the lower part of the first sub-channel, changing the flow path of the external circulation cold air channel so that it can have sufficient indirect contact with the internal circulation hot air. The first air collecting cavity fixes the internal circulation fan 11 on the heat exchanger 2 so that the internal circulation hot air flows through the second sub-channel. The second air collecting cavity fixes the external circulation fan 12 on the heat exchanger 2 so that the external circulation cold air flows through the first sub-channel.

[0047] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A heat exchanger, comprising a mounting plate (21), an external circulation air inlet (24), and an adjustment mechanism (3), characterized in that: The mounting plate (21) is fixedly connected to the mounting frame (28) located on the external circulation air inlet (24). The top and bottom of the mounting frame (28) are open. A filter screen (29) is fixedly connected in the mounting frame (28). The adjustment mechanism (3) includes an adjustment scraper (32) disposed above the filter screen (29). The adjustment scraper (32) contacts the filter screen (29). The mounting plate (21) is equipped with a drive mechanism (5) for driving the adjustment scraper (32) to slide along the filter screen (29).

2. A heat exchanger according to claim 1, characterized in that: The mounting frame (28) is equipped with a cleaning mechanism (4), which includes a collection frame (41) located below the filter screen (29). The top of the collection frame (41) is open, and a cleaning scraper (42) that contacts the filter screen (29) is installed on the collection frame (41). The driving mechanism (5) can drive the collection frame (41) to slide along the filter screen (29).

3. A heat exchanger according to claim 2, characterized in that: Cleaning scrapers (42) are slidably installed on both sides of the top of the collection frame (41). The two cleaning scrapers (42) move towards each other. A moving part for driving the cleaning scrapers (42) is installed on the collection frame (41).

4. A heat exchanger according to claim 3, characterized in that: The mounting frame (28) has an outlet for the collection frame (41) to pass through. A sealing door (281) is hinged in the outlet. A torsion spring is sleeved on the hinge shaft installed in the sealing door (281). The adjusting scraper (32) is located above the collection frame (41).

5. A heat exchanger according to claim 4, characterized in that: A guide hopper (411) is fixedly connected to the side wall of the collection frame (41). A discharge port communicating with the guide hopper (411) is opened on the collection frame (41). A stop gate (412) is hinged in the discharge port. A torsion spring is sleeved on the hinge shaft installed in the stop gate (412).

6. A heat exchanger according to claim 5, characterized in that: The collection frame (41) is provided with a collection groove for the cleaning scraper (42) to slide. The moving part includes a cleaning screw (43) rotatably installed in the collection groove. The cleaning screw (43) is threadedly connected to the cleaning scraper (42). The cleaning screw (43) extends to the outside of the collection frame (41). A cleaning gear (431) is fixedly connected to the cleaning screw (43). A cleaning rack (44) that meshes with the cleaning gear (431) is slidably installed on the collection frame (41). A fixing plate (211) is fixedly connected to the mounting plate (21). A stop bar (45) is fixedly connected to both the fixing plate (211) and the mounting frame (28). The stop bar (45) can contact the cleaning rack (44).

7. A heat exchanger according to claim 6, characterized in that: The drive mechanism (5) includes a motor (51) fixedly connected to a fixed plate (211), a drive screw (52) rotatably mounted in the mounting frame (28), the drive screw (52) being fixedly connected to the output shaft of the motor (51), a drive plate (53) being fixedly connected to the collection frame (41), and the drive screw (52) being threadedly connected to the drive plate (53).

8. A heat exchanger according to claim 7, characterized in that: A pusher plate (46) is slidably installed in the collection frame (41). A pusher block (461) that can contact the stop gate (412) is fixedly connected to the pusher plate (46). A reciprocating screw (47) is rotatably installed in the collection frame (41). The reciprocating screw (47) is threadedly connected to the pusher plate (46). A transmission component is installed on the fixed plate (211). The drive screw (52) can drive the reciprocating screw (47) to rotate through the transmission component.

9. A heat exchanger according to claim 8, characterized in that: The transmission component includes a transmission shaft (54) rotatably mounted on a fixed plate (211), a conveyor belt sleeved between the transmission shaft (54) and the drive screw (52), a first bevel gear (541) fixedly connected to the transmission shaft (54), a reciprocating screw (47) extending to the outside of the collection frame (41) and fixedly connected to a second bevel gear (471), the second bevel gear (471) being able to mesh with the first bevel gear (541), and a first spring (55) being fixedly connected in the mounting frame (28) and able to abut against the drive plate (53).

10. A high-protection, high-efficiency heat dissipation system for an inverter, using a heat exchanger as described in any one of claims 1-9, characterized in that, The cabinet (1) is divided into an inner cavity and an outer circulation cavity. The inner cavity includes power devices, a power board, a disconnect switch, an inner circulation fan (11), and an IGBT. The outer circulation cavity includes a radiator, an inductor, a heat exchanger (2), and an outer circulation fan (12). The heat exchanger (2) includes a mounting plate (21), a first partition (22), a second partition (23), a first sub-channel, a second sub-channel, an inner circulation air inlet (26), an inner circulation air outlet (27), an outer circulation air inlet (24), an outer circulation air outlet (25), a first air collection chamber, and a second air collection chamber.

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