A printed circuit board type heat exchanger automatic circulating cleaning equipment and a use method thereof

Abstract

This invention provides an automatic circulating cleaning device for printed circuit board heat exchangers and its usage method, including a housing (1), a placement platform (3), and a heat exchanger body (4). A groove (2) is formed on the upper part of the housing (1), and the placement platform (3) is located at the bottom of the groove (2). The heat exchanger body (4) is placed on the placement platform (3). Each connecting pipe (18) near the end of the heat exchanger body (4) is connected to a sleeve (5), and the inner wall of each sleeve (5) is provided with an annular sealing gasket. The sleeve (5) is compatible with the cold inlet (31), cold outlet (32), hot inlet (34), and hot outlet (35). This technical solution can solve the problem of reduced heat exchange efficiency or even blockage caused by scaling in the microchannels of printed circuit board heat exchangers after long-term use. The equipment has a simple structure, provides thorough cleaning, and automation eliminates the need for additional labor costs. The circulating cleaning process saves water resources.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger cleaning technology, and in particular to an automatic circulating cleaning device for printed circuit board type heat exchangers and its usage method. Background Technology

[0002] Printed circuit board heat exchangers, abbreviated as PCHE, are heat exchange cores made by chemically etching semi-circular cross-section flow channels with a diameter of 1 to 2 mm onto heat exchange plates, and then stacking and welding the heat exchange plates together using vacuum diffusion welding technology. Essentially, they belong to microchannel heat exchangers and are a new type of heat exchanger with a compact structure, high efficiency, and excellent heat exchange performance.

[0003] During use, the inner wall of the microchannel heat exchanger is in contact with the fluid for a long time, which will cause scaling inside. If the scale is not cleaned in time, the heat transfer efficiency of the equipment will be reduced, and in severe cases, blockage will occur, which will seriously affect the normal use of the printed circuit board heat exchanger. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an automatic circulating cleaning device for printed circuit board heat exchangers and its usage method, solving the problem of reduced heat exchange efficiency or even blockage caused by scaling in the microchannels of printed circuit board heat exchangers after long-term use. The device has a simple structure, cleans thoroughly, is automated without increasing labor costs, and the circulating cleaning saves water resources.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic circulating cleaning device for a printed circuit board type heat exchanger, comprising a box (1), a placement platform (3), and a heat exchanger body (4). The box (1) has a groove (2) on its upper part, and the placement platform (3) is set at the bottom of the groove (2). The heat exchanger body (4) is placed on the placement platform (3). The heat exchanger body (4) is provided with a cold inlet (31), a cold outlet (32), a hot inlet (34), and a hot outlet (35) along its outer wall. Connecting pipes (18) are slidably provided on both sides of the groove (2), and a sleeve (5) is connected to one end of the connecting pipe (18) near the heat exchanger body (4). The inner wall of the sleeve (5) is provided with an annular sealing gasket. The sleeve (5) is compatible with the cold inlet (31), the cold outlet (32), the hot inlet (34), and the hot outlet (35).

[0006] Both sides of the housing (1) are provided with pushers, which are used to push the two sleeves (5) to move and fit into the cold inlet (31) and cold outlet (32) or the hot inlet (34) and hot outlet (35); the lower part of the housing (1) has a water storage area (24), and a high-pressure water pump (21) is provided in the water storage area (24). The two connecting pipes (18) are respectively fixedly connected to the first hose (16) and the second hose (20) at the ends away from the sleeves (5). The other end of the second hose (20) is connected to the high-pressure water pump (21). A filter is rotatably provided in the housing (1) on the side near the first hose (16). The filter cartridge (14) is connected to the filter cartridge (14) with the lower end of the first hose (16) aligned with the filter cartridge (14). A cleaning groove (9) is opened on the outer wall of the box body (1) near the filter cartridge (14), and a cleaning mechanism is provided in the cleaning groove (9). The cleaning mechanism is used to rotate and clean the filter cartridge (14) alternately. The high-pressure water pump (21) draws water from the water storage area (24) and pumps it through the second hose (20), one of the connecting pipes (18), and into the heat exchanger body (4). It is then sprayed out through the other connecting pipe (18) and the first hose (16), and then returns to the water storage area (24) through the filter cartridge (14).

[0007] In a preferred embodiment, a placement groove is provided on the upper part of the placement platform (3), and the heat exchanger body (4) is placed in the placement groove. Four overlapping grooves (33) are provided around the upper part of the placement platform (3). After the heat exchanger body (4) is placed in the placement groove, the cold inlet (31), cold outlet (32), hot inlet (34) and hot outlet (35) are all locked in the overlapping grooves (33).

[0008] In a preferred embodiment, the pusher includes two electric push rods (6), which are bolted to the outer walls of the two sides of the housing (1). One end of each of the two connecting pipes (18) extends into the interior of the housing (1), and a fixing bracket (17) is fixedly fitted at the end of each connecting pipe (18) away from the sleeve (5). The output ends of the two electric push rods (6) pass through the inner wall of the housing (1) and are fixed to one end of each of the two fixing brackets (17). The heat exchanger body (4) is placed in the placement slot on the placement platform (3). After placement, the cold inlet (31), cold outlet (32), hot inlet (34), and hot outlet (35) are all locked in the overlapping slot (33), thereby aligning the cold inlet (31) and cold outlet (32) with the two sleeves (5). The two electric push rods (6) are driven to fit the two sleeves (5) into the cold inlet (31) and cold outlet (32) respectively.

[0009] In a preferred embodiment, the placement platform (3) is rotatably located at the bottom of the groove (2). A third motor (19) is fixedly installed inside the housing (1) near the placement platform (3), and the output end of the third motor (19) is fixed at the center of the bottom of the placement platform (3). After the cold inlet (31) and cold outlet (32) are flushed with water under high pressure, the third motor (19) is started to drive the placement platform (3) to rotate, so that the hot inlet (34) and hot outlet (35) are aligned with the two sleeves (5), and the other water channels of the heat exchanger body (4) are flushed again.

[0010] In a preferred embodiment, the cleaning mechanism includes a cleaning roller (10) movably disposed within the cleaning trough (9), and the cleaning roller (10) has bristles around its circumference. A connecting notch is opened inside one side of the cleaning trough (9), and the filter cartridge (14) enters the cleaning trough (9) through the connecting notch. The cleaning roller (10) is adapted to the outer wall of the filter cartridge (14). A slider (28) is movably disposed inside the housing (1) near the filter cartridge (14), and a reciprocating screw (29) and a limiting post (30) are respectively provided through both ends of the slider (28). The limiting post (30) is slidably connected to the slider (28). The reciprocating screw (29) meshes with the slider (28). Both ends of the reciprocating screw (29) are rotatably disposed on the inner wall of the housing (1). Both ends of the limiting post (30) are fixed to the inner wall of the housing (1). A first motor (7) and a second motor (8) are fixed on the outer wall of one side of the housing (1). The second motor (8) outputs... One end of the first motor (7) is keyed to one end of the reciprocating screw (29), and the output end of the first motor (7) is keyed to one end of the filter cartridge (14). The top wall of the cleaning tank (9) has a strip groove (11). A connecting frame (15) is fixed on one side of the slider (28). The other end of the connecting frame (15) passes through the strip groove (11) and is rotated on the upper end of the cleaning roller (10). The second motor (8) drives the reciprocating screw (29) to rotate, so that the slider (28) drives the cover (27) to reciprocate. In conjunction with the first motor (7) driving the filter cartridge (14) to rotate, different parts of the filter cartridge (14) can be filtered alternately, improving the overall utilization rate of the filter cartridge (14). When the slider (28) moves, it drives the cleaning roller (10) to move through the connecting frame (15), so that it sweeps and cleans the filter cartridge (14) located on one side of the cleaning tank (9). At the same time, the cleaning roller (11) rotates under the action of the gear (26) and the rack (12).

[0011] In a preferred embodiment, a rack (12) is fixed inside the cleaning groove (9), a gear (26) is coaxially fixed at the bottom of the cleaning roller (11), and the gear (26) meshes with the rack (12). The side wall of the cleaning roller (11) is a concave arc surface.

[0012] In a preferred embodiment, the lower end of the first hose (16) is fixedly connected to a cover (27), and the end of the first hose (16) near the cover (27) is fixed to the slider (28).

[0013] In a preferred embodiment, one end of the filter cartridge (14) is open, and the open end of the filter cartridge (14) passes through the outer wall of one side of the box body (1). A water spray pipe (13) is fixedly installed on one side of the box body (1), and the water spray pipe (13) extends from the open end of the filter cartridge (14) into the interior of the filter cartridge (14). A plurality of spray holes (25) are equally spaced on one side of the water spray pipe (13), and the spray holes (25) are all aligned with the direction of the cleaning tank (9). A cleaning water pump (22) is installed in the water storage area (24), and the cleaning water pump (22) is connected to a third hose (23), and the other end of the third hose (23) is connected to one end of the water spray pipe (13).

[0014] The present invention also provides a method for using an automatic circulating cleaning device for printed circuit board type heat exchangers. The device employs the aforementioned automatic circulating cleaning device for printed circuit board type heat exchangers. The heat exchanger body (4) is placed in the placement slot on the placement platform (3). After placement, the cold inlet (31), cold outlet (32), hot inlet (34), and hot outlet (35) are all locked in the overlapping slot (33), thereby aligning the cold inlet (31) and cold outlet (32) with the two sleeves (5). The two electric push rods (6) are driven to allow the two sleeves (5) to be respectively fitted into the cold inlet (31) and cold outlet (32). Then, the high-pressure water pump (21) is started to draw water from the water storage area (24) from the high-pressure pump, and through the second hose (20), through one of the connecting pipes (18), into the heat exchanger body (4) for high-pressure rinsing. After the dirt and impurities are flushed down, they are sprayed out through the other connecting pipe (18) and the first hose (16). Then, the filter cartridge (14) returns to the water storage area (24) to achieve circulating rinsing. The second motor (8) drives the reciprocating screw (29) to rotate, so that the slider (28) drives the cover (27) to move back and forth. In conjunction with the first motor (7) driving the filter cartridge (14) to rotate, different parts of the filter cartridge (14) can be filtered alternately, improving the overall utilization rate of the filter cartridge (14). When the slider (28) moves, it drives the cleaning roller (10) to move through the connecting frame (15). Under the action of the gear (26) and rack (12), the cleaning roller (11) rotates, so that it sweeps and cleans the filter cartridge (14) on the side of the cleaning tank (9). At the same time, the cleaning water pump (22) draws out the water in the water storage area (24) and enters the spray pipe (13) through the third hose (23). Several spray holes (25) are equally spaced on one side of the spray pipe (13) and are aligned with the direction of the cleaning tank (9), so that the surface of the filter cartridge (14) is clean after it rotates back to its original position.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention utilizes a rotating placement platform, along with a placement groove and an overlapping groove. During use, the heat exchanger body is simply placed in the placement groove. After placement, the cold inlet, cold outlet, hot inlet, and hot outlet are all secured in the overlapping groove, aligning the cold inlet and cold outlet with the two sleeves. Two pushing components are then activated to allow the two sleeves to fit into the cold inlet and cold outlet respectively. A high-pressure water pump is then activated to draw water from the storage area, which is then pumped through a second hose and one of the connecting pipes into the heat exchanger body for high-pressure flushing. This flushes away dirt and impurities, which are then sprayed out through another connecting pipe and the first hose, returning to the storage area via a filter cartridge. This achieves circulating flushing, conserving water resources. Furthermore, the returned water is filtered by the filter cartridge and flows back to the storage area, maintaining the cleanliness of the circulating water.

[0017] 2. The present invention, through its cleaning mechanism, enables the second motor to continuously drive the filter cartridge to rotate during cyclic rinsing, while the first motor drives the reciprocating screw to rotate, causing the slider to move the cover opening back and forth. Combined with the rotation of the filter cartridge, this allows different parts of the filter cartridge to filter alternately, improving the overall utilization rate of the filter cartridge and ensuring the effectiveness of use. The start of the first motor can drive the reciprocating screw to rotate, causing the slider to move the cover opening longitudinally along the upper part of the filter cartridge. Combined with the rotation of the filter cartridge, this further ensures that the filter cartridge receives filtration from all directions. When the slider moves, it drives the cleaning roller to move through the connecting frame, which sweeps and cleans the side of the filter cartridge located in the cleaning tank. At the same time, the cleaning roller rotates under the action of gears and racks, resulting in better cleaning effect, so that the surface of the filter cartridge is clean after rotating back to its original position. Attached Figure Description

[0018] Figure 1 This is a perspective view of a preferred embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of another preferred embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional sectional view of a preferred embodiment of the present invention;

[0021] Figure 4 This is a schematic planar cross-sectional view of a preferred embodiment of the present invention;

[0022] Figure 5 This is a three-dimensional schematic diagram of the internal mechanism of a preferred embodiment of the present invention;

[0023] Figure 6 This is a three-dimensional schematic diagram of the placement platform and the heat exchanger body according to a preferred embodiment of the present invention;

[0024] Figure 7 This is a three-dimensional schematic diagram of the filter cartridge according to a preferred embodiment of the present invention;

[0025] The diagram is marked as follows:

[0026] 1. Housing; 2. Groove; 3. Placement platform; 4. Heat exchanger body; 5. Sleeve; 6. Electric push rod; 7. First motor; 8. Second motor; 9. Cleaning tank; 10. Cleaning roller; 11. Strip groove; 12. Rack; 13. Water spray pipe; 14. Filter cartridge; 15. Connecting frame; 16. First hose; 17. Fixing frame; 18. Connecting pipe; 19. Third motor; 20. Second hose; 21. High-pressure water pump; 22. Cleaning water pump; 23. Third hose; 24. Water storage area; 25. Spray hole; 26. Gear; 27. Cover opening; 28. Slider; 29. ​​Reciprocating lead screw; 30. Limiting post; 31. Cold inlet; 32. Cold outlet; 33. Overlap groove; 34. Hot inlet; 35. Hot outlet. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] like Figure 1-7As shown, an automatic circulating cleaning device for a printed circuit board type heat exchanger includes a housing 1, a placement platform 3, and a heat exchanger body 4. A groove 2 is formed in the upper part of the housing 1, and the placement platform 3 is located at the bottom of the groove 2. The heat exchanger body 4 is placed on the placement platform 3. The heat exchanger body 4 has a cold inlet 31, a cold outlet 32, a hot inlet 34, and a hot outlet 35 along its outer wall. Connecting pipes 18 are slidably installed on both sides of the groove 2, and sleeves 5 are connected to the ends of the connecting pipes 18 near the heat exchanger body 4. The inner walls of the sleeves 5 are provided with annular sealing gaskets. The sleeves 5 are adapted to the cold inlet 31, cold outlet 32, hot inlet 34, and hot outlet 35. Pushing components are provided on both sides of the housing 1 to push the two sleeves 5 to move and fit into the cold inlet 31 and cold outlet 32 ​​or the hot inlet 34 and hot outlet 35. The lower part of the housing 1 has a water storage area 24, and a high-pressure water pump 21 is installed in the water storage area 24. Two connecting pipes 18 are fixedly connected to the first hose 16 and the second hose 20 respectively at the ends away from the sleeve 5. The other end of the second hose 20 is connected to the high-pressure water pump 21. A filter cartridge 14 is rotatably installed in the housing 1 near the first hose 16, and the lower end of the first hose 16 is aligned with the filter cartridge 14. A cleaning groove 9 is opened on the outer wall of the housing 1 near the filter cartridge 14, and a cleaning mechanism is installed in the cleaning groove 9. The cleaning mechanism is used to rotate and clean the filter cartridge 14 alternately. The high-pressure water pump 21 draws water from the water storage area 24, passes through the second hose 20, one of the connecting pipes 18, enters the heat exchanger body 4, and is then sprayed out through the other connecting pipe 18 and the first hose 16, and then returns to the water storage area 24 through the filter cartridge 14.

[0031] The upper part of the placement platform 3 has a placement groove, and the heat exchanger body 4 is placed in the placement groove. The placement platform 3 has four overlapping grooves 33 around its upper part. After the heat exchanger body 4 is placed in the placement groove, the cold inlet 31, cold outlet 32, hot inlet 34, and hot outlet 35 are all locked in the overlapping grooves 33.

[0032] The pushing component includes two electric push rods 6, which are bolted to the outer walls of both sides of the housing 1. One end of each of the two connecting pipes 18 extends into the interior of the housing 1, and a fixing bracket 17 is fixedly fitted onto the end of each connecting pipe 18 away from the sleeve 5. The output ends of the two electric push rods 6 pass through the inner wall of the housing 1 and are fixed to one end of each of the two fixing brackets 17. The heat exchanger body 4 is placed in the placement slot on the placement platform 3. After placement, the cold inlet 31, cold outlet 32, hot inlet 34, and hot outlet 35 are all engaged in the overlapping slot 33, thereby aligning the cold inlet 31 and cold outlet 32 ​​with the two sleeves 5. The two electric push rods 6 are driven to make the two sleeves 5 fit into the cold inlet 31 and cold outlet 32 ​​respectively.

[0033] The placement platform 3 is rotatably located at the bottom of the groove 2. A third motor 19 is fixedly installed inside the housing 1 near the placement platform 3, and the output end of the third motor 19 is fixed at the center of the bottom of the placement platform 3. After the cold inlet 31 and the cold outlet 32 ​​are flushed with water under high pressure, the third motor 19 is started to drive the placement platform 3 to rotate, so that the hot inlet 34 and the hot outlet 35 are aligned with the two sleeves 5, and the other water passages of the heat exchanger body 4 are flushed again.

[0034] The cleaning mechanism includes a cleaning roller 10 movably disposed within a cleaning tank 9, with bristles arranged around its circumference. A connecting notch is provided on one side of the cleaning tank 9, through which a filter cartridge 14 enters the cleaning tank 9. The cleaning roller 10 is fitted to the outer wall of the filter cartridge 14. A slider 28 is movably disposed within the housing 1 near the filter cartridge 14, with a reciprocating screw 29 and a limiting post 30 respectively passing through both ends of the slider 28. The limiting post 30 is slidably connected to the slider 28, and the reciprocating screw 29 meshes with the slider 28. Both ends of the reciprocating screw 29 are rotatably disposed on the inner wall of the housing 1, and both ends of the limiting post 30 are fixed to the inner wall of the housing 1. A first motor 7 and a second motor 8 are fixed to the outer wall of one side of the housing 1. The output end of the second motor 8 is connected to the reciprocating screw 29. One end of the rod 29 is keyed, and the output end of the first motor 7 is keyed to one end of the filter cartridge 14. A strip groove 11 is opened on the top wall of the cleaning tank 9. A connecting frame 15 is fixed on one side of the slider 28. The other end of the connecting frame 15 passes through the strip groove 11 and is rotatably mounted on the upper end of the cleaning roller 10. The second motor 8 drives the reciprocating screw 29 to rotate, so that the slider 28 drives the cover 27 to reciprocate. In conjunction with the first motor 7 driving the filter cartridge 14 to rotate, different parts of the filter cartridge 14 can filter alternately, improving the overall utilization rate of the filter cartridge 14. When the slider 28 moves, it drives the cleaning roller 10 to move through the connecting frame 15, so that it sweeps and cleans the filter cartridge 14 located on one side of the cleaning tank 9. At the same time, the cleaning roller 10 rotates under the action of the gear 26 and the rack 12.

[0035] A rack 12 is fixed inside the cleaning tank 9, and a gear 26 is coaxially fixed at the bottom of the cleaning roller 10, with the gear 26 meshing with the rack 12. The side wall of the cleaning roller 10 is a concave arc surface.

[0036] The lower end of the first flexible tube 16 is fixedly connected to the cover opening 27, and the end of the first flexible tube 16 near the cover opening 27 is fixed to the slider 28.

[0037] The filter cartridge 14 has an open end, and the open end of the filter cartridge 14 passes through the outer wall of one side of the box body 1. A water spray pipe 13 is fixedly installed on one side of the box body 1, and the water spray pipe 13 extends into the interior of the filter cartridge 14 from the open end of the filter cartridge 14. Several spray holes 25 are equally spaced on one side of the water spray pipe 13, and the spray holes 25 are all aligned with the direction of the cleaning tank 9. A cleaning water pump 22 is installed in the water storage area 24, and the cleaning water pump 22 is connected to a third hose 23, and the other end of the third hose 23 is connected to one end of the water spray pipe 13.

[0038] A method for using an automatic circulating cleaning device for a printed circuit board type heat exchanger involves placing the heat exchanger body 4 in a placement slot on a placement platform 3. After placement, the cold inlet 31, cold outlet 32, hot inlet 34, and hot outlet 35 are all engaged in the overlapping slots 33, aligning the cold inlet 31 and cold outlet 32 ​​with two sleeves 5. Two electric push rods 6 are then driven to allow the two sleeves 5 to be fitted onto the cold inlet 31 and cold outlet 32 ​​respectively. Then, the high-pressure water pump 21 is activated to draw water from the water storage area 24. This water is then passed through a second hose 20, one of the connecting pipes 18, and into the heat exchanger body 4 for high-pressure rinsing, flushing away dirt and impurities. The water is then sprayed out through the other connecting pipe 18 and the first hose 16, and finally returns to the water storage area 24 through the filter cartridge 14, thus achieving [the desired cleaning process]. The second motor 8 drives the reciprocating screw 29 to rotate, causing the slider 28 to drive the cover 27 to reciprocate. This, combined with the first motor 7 driving the filter cartridge 14 to rotate, allows different parts of the filter cartridge 14 to filter alternately, improving the overall utilization rate of the filter cartridge 14. When the slider 28 moves, it drives the cleaning roller 10 to move through the connecting frame 15. Under the action of the gear 26 and rack 12, the cleaning roller 10 rotates, causing it to sweep and clean the filter cartridge 14 on one side of the cleaning tank 9. At the same time, the cleaning water pump 22 draws water from the water storage area 24 and enters the spray pipe 13 through the third hose 23. The spray pipe 13 has several spray holes 25 evenly spaced on one side, all aligned with the direction of the cleaning tank 9, which makes the cleaning effect better. Thus, the surface of the filter cartridge 14 is clean after it rotates back to its original position.

Claims

1. An automatic circulating cleaning device for printed circuit board heat exchangers, characterized in that, The device includes a housing (1), a placement platform (3), and a heat exchanger body (4). The housing (1) has a groove (2) on its upper part, and the placement platform (3) is located at the bottom of the groove (2). The heat exchanger body (4) is placed on the placement platform (3). The heat exchanger body (4) has a cold inlet (31), a cold outlet (32), a hot inlet (34), and a hot outlet (35) along its outer wall. Connecting pipes (18) are slidably provided on both sides of the groove (2), and a sleeve (5) is connected to one end of the connecting pipe (18) near the heat exchanger body (4). The inner wall of the sleeve (5) is provided with an annular sealing gasket. The sleeve (5) is compatible with the cold inlet (31), the cold outlet (32), the hot inlet (34), and the hot outlet (35). Both sides of the housing (1) are provided with pushers, which are used to push the two sleeves (5) to move and fit into the cold inlet (31) and cold outlet (32) or the hot inlet (34) and hot outlet (35); there is a water storage area (24) in the lower part of the housing (1), and a high-pressure water pump (21) is provided in the water storage area (24). The two connecting pipes (18) are respectively fixedly connected to the first hose (16) and the second hose (20) at the ends away from the sleeves (5). The other end of the second hose (20) is connected to the high-pressure water pump (21). A filter is rotatably provided in the housing (1) on the side near the first hose (16). The filter cartridge (14) is connected to the filter cartridge (14) with the lower end of the first hose (16) aligned with the filter cartridge (14). A cleaning groove (9) is opened on the outer wall of the box body (1) near the filter cartridge (14), and a cleaning mechanism is provided in the cleaning groove (9). The cleaning mechanism is used to rotate and clean the filter cartridge (14) alternately. The high-pressure water pump (21) draws water from the water storage area (24) and pumps it through the second hose (20), one of the connecting pipes (18), and into the heat exchanger body (4). It is then sprayed out through the other connecting pipe (18) and the first hose (16), and then returns to the water storage area (24) through the filter cartridge (14). The upper part of the placement platform (3) has a placement groove, and the heat exchanger body (4) is placed in the placement groove. The placement platform (3) has four overlapping grooves (33) around its upper part. After the heat exchanger body (4) is placed in the placement groove, the cold inlet (31), cold outlet (32), hot inlet (34) and hot outlet (35) are all locked in the overlapping grooves (33).

2. The automatic circulating cleaning equipment for printed circuit board heat exchangers according to claim 1, characterized in that, The pusher includes two electric push rods (6), which are bolted to the outer walls of the two sides of the housing (1). One end of each of the two connecting pipes (18) extends into the housing (1), and the end of each connecting pipe (18) away from the sleeve (5) is fixedly fitted with a fixing bracket (17). The output ends of the two electric push rods (6) pass through the inner wall of the housing (1) and are fixed to one end of each of the two fixing brackets (17). The heat exchanger body (4) is placed in the placement slot on the placement platform (3). After placement, the cold inlet (31), cold outlet (32), hot inlet (34) and hot outlet (35) are all locked in the overlapping slot (33), so that the cold inlet (31) and cold outlet (32) are aligned with the two sleeves (5). The two electric push rods (6) are driven so that the two sleeves (5) are respectively fitted into the cold inlet (31) and cold outlet (32).

3. The automatic circulating cleaning equipment for printed circuit board heat exchangers according to claim 2, characterized in that, The placement platform (3) is rotated and located at the bottom of the groove (2). A third motor (19) is fixed inside the box (1) near the placement platform (3), and the output end of the third motor (19) is fixed at the center of the bottom of the placement platform (3). After the cold inlet (31) and cold outlet (32) are flushed with water under high pressure, the third motor (19) is started to drive the placement platform (3) to rotate, so that the hot inlet (34) and hot outlet (35) are aligned with the two sleeves (5), and the other water channels of the heat exchanger body (4) are flushed again.

4. The automatic circulating cleaning equipment for printed circuit board heat exchangers according to claim 3, characterized in that, The cleaning mechanism includes a cleaning roller (10) movably disposed in the cleaning tank (9), and the cleaning roller (10) is provided with bristles around its circumference. A connecting notch is opened inside one side of the cleaning tank (9), and the filter cartridge (14) enters the cleaning tank (9) through the connecting notch. The cleaning roller (10) is adapted to the outer wall of the filter cartridge (14). A slider (28) is movably disposed in the housing (1) near the filter cartridge (14), and a reciprocating screw (29) and a limiting post (30) are respectively provided through both ends of the slider (28). The limiting post (30) is slidably connected to the slider (28), and the reciprocating screw (29) meshes with the slider (28). Both ends of the reciprocating screw (29) are rotatably disposed on the inner wall of the housing (1), and both ends of the limiting post (30) are fixed to the inner wall of the housing (1). A first motor (7) and a second motor (8) are fixed on the outer wall of one side of the housing (1). The output end of the second motor (8) is connected to the reciprocating screw. One end of the rod (29) is keyed, and the output end of the first motor (7) is keyed to one end of the filter cartridge (14). The top wall of the cleaning tank (9) has a strip groove (11). A connecting frame (15) is fixed on one side of the slider (28). The other end of the connecting frame (15) passes through the strip groove (11) and is rotated on the upper end of the cleaning roller (10). The second motor (8) drives the reciprocating screw (29) to rotate, so that the slider (28) drives the cover (27) to move back and forth. In conjunction with the first motor (7) driving the filter cartridge (14) to rotate, different parts of the filter cartridge (14) can be filtered alternately, improving the overall utilization rate of the filter cartridge (14). When the slider (28) moves, it drives the cleaning roller (10) to move through the connecting frame (15), so that it sweeps and cleans the filter cartridge (14) located on one side of the cleaning tank (9). At the same time, the cleaning roller (10) rotates under the action of the gear (26) and the rack (12).

5. The automatic circulating cleaning equipment for printed circuit board heat exchangers according to claim 4, characterized in that, A rack (12) is fixed inside the cleaning tank (9), and a gear (26) is coaxially fixed at the bottom of the cleaning roller (10), and the gear (26) meshes with the rack (12). The side wall of the cleaning roller (10) is a concave arc surface.

6. The automatic circulating cleaning equipment for a printed circuit board heat exchanger according to claim 5, characterized in that, The lower end of the first hose (16) is fixedly connected to the cover opening (27), and the end of the first hose (16) near the cover opening (27) is fixed to the slider (28).

7. The automatic circulating cleaning equipment for a printed circuit board heat exchanger according to claim 6, characterized in that, The filter cartridge (14) has an open end, and the open end of the filter cartridge (14) passes through the outer wall of one side of the box (1). A water spray pipe (13) is fixedly installed on one side of the box (1), and the water spray pipe (13) extends from the open end of the filter cartridge (14) into the inside of the filter cartridge (14). Several spray holes (25) are equidistantly opened on one side of the water spray pipe (13), and the spray holes (25) are all aligned with the direction of the cleaning tank (9). A cleaning water pump (22) is installed in the water storage area (24), and the cleaning water pump (22) is connected to a third hose (23), and the other end of the third hose (23) is connected to one end of the water spray pipe (13).

8. A method of using an automatic circulating cleaning device for printed circuit board heat exchangers, characterized in that, The automatic circulating cleaning device for a printed circuit board type heat exchanger described in claim 7 is used. The heat exchanger body (4) is placed in the placement slot on the placement platform (3). After placement, the cold inlet (31), cold outlet (32), hot inlet (34), and hot outlet (35) are all locked in the overlapping slot (33), so that the cold inlet (31) and cold outlet (32) are aligned with the two sleeves (5). The two electric push rods (6) are driven so that the two sleeves (5) are respectively fitted into the cold inlet (31) and cold outlet (32). Then, the high-pressure water pump (21) is started to draw water from the high-pressure pump in the water storage area (24), and through the second hose (20), through one of the connecting pipes (18), into the heat exchanger body (4) for high-pressure flushing. The dirt and impurities are flushed down and then sprayed out through the other connecting pipe (18) and the first hose (16), and then returned to the storage through the filter cartridge (14). In the water zone (24), a circulating rinse is achieved. The second motor (8) drives the reciprocating screw (29) to rotate, causing the slider (28) to drive the cover (27) to reciprocate. In conjunction with the first motor (7) driving the filter cartridge (14) to rotate, different parts of the filter cartridge (14) can be filtered alternately, improving the overall utilization rate of the filter cartridge (14). When the slider (28) moves, it drives the cleaning roller (10) to move through the connecting frame (15). Under the action of the gear (26) and rack (12), the cleaning roller (10) rotates, causing it to clean the filter cartridge (14) located on the side of the cleaning tank (9). At the same time, the cleaning water pump (22) draws water out of the water storage zone (24) and enters the spray pipe (13) through the third hose (23). Several spray holes (25) are evenly spaced on one side of the spray pipe (13) and are aligned with the direction of the cleaning tank (9), so that the surface of the filter cartridge (14) is clean after it rotates back to its original position.

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