A heat dissipation device for a carbon dioxide heat pump air conditioner

Abstract

The present invention discloses a heat dissipation device for a carbon dioxide heat pump air conditioner, and relates to the field of carbon dioxide heat pump air conditioners, comprising: a partition plate fixedly arranged on a casing of the carbon dioxide heat pump air conditioner, a heat exchanger fixedly arranged between the casing of the carbon dioxide heat pump air conditioner and the partition plate, a water trough for drainage is also arranged inside the partition plate, and the two ends of the water trough are in a high and low shape, a mesh plate is fixedly arranged on a side wall of the casing of the carbon dioxide heat pump air conditioner, and a plurality of heat dissipation fans for dissipating heat for the heat exchanger are fixedly arranged on the top of the casing of the carbon dioxide heat pump air conditioner, the present invention can ensure that the mesh plate will not be blocked through a cleaning unit, resulting in a small air intake volume of the mesh plate, thereby affecting the heat dissipation effect of the heat dissipation fan on the heat exchanger, and the plastic bags or leaves processed by the cleaning unit can be collected under the action of the collecting unit, so as to ensure that the cleaning unit can always operate effectively.

Description

Technical Field

[0001] The invention relates to the field of carbon dioxide heat pump air conditioners, in particular to a heat dissipation device of a carbon dioxide heat pump air conditioner. Background Art

[0002] Carbon dioxide heat pump air conditioning refers to the use of carbon dioxide as a refrigerant in the air conditioning refrigeration cycle system to achieve air conditioning and heating through compression, condensation and expansion processes. Compared with traditional gas refrigerants such as Freon, carbon dioxide has the advantages of environmental protection, high efficiency and safety.

[0003] According to a carbon dioxide heat pump recorded in a Chinese public document (CN111964305B), the carbon dioxide heat pump includes a shell, a horizontal partition is arranged in the shell, the partition divides the shell into two spaces, a heat exchanger assembly is fixedly connected above the partition, a fan is arranged at the upper end of the shell, the fan is located above the heat exchanger assembly, the heat exchanger includes a plurality of fins and heat pipes arranged in sequence, the heat pipes are in a serpentine coil shape, and the heat pipes pass through each fin, drainage grooves are arranged on both sides of the partition, one end of the drainage groove is inclined downward, and a water outlet is arranged at the downwardly inclined end of the drainage groove, a through hole is arranged on the shell, the water outlet passes through the through hole, and air inlets corresponding to the heat exchanger are arranged on both sides of the shell, the fan performs exhaust treatment through the air inlet, and the heat of the heat exchanger assembly is diffused out with the flow of air. If the heat cannot be effectively discharged, it will affect the normal use of the heat pump air conditioner and affect the service life and performance.

[0004] In order to ensure the air intake, the area of ​​the air inlet is very large, and the air inlet is equipped with a mesh plate. The mesh plate can prevent external impurities from entering the shell, prevent debris from clogging the water outlet of the drain groove, and avoid affecting the flow rate of the fan to exhaust air. However, the surface of the mesh plate is easily attached to debris such as leaves and plastic bags due to the influence of suction. This kind of debris attached to the mesh plate will significantly reduce the air intake of the mesh plate, and ultimately affect the heat dissipation effect of the fan. Summary of the invention

[0005] The object of the present invention is to provide a heat dissipation device for a carbon dioxide heat pump air conditioner to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat dissipation device for a carbon dioxide heat pump air conditioner, comprising: a carbon dioxide heat pump air conditioner casing is fixedly provided with a partition plate inside the carbon dioxide heat pump air conditioner casing, and a heat exchanger is fixedly mounted between the carbon dioxide heat pump air conditioner casing and the partition plate, a water tank for drainage is also arranged inside the partition plate, and the two ends of the water tank are one high and one low, a mesh plate is fixedly arranged on the side wall of the carbon dioxide heat pump air conditioner casing, and a plurality of heat dissipation fans for dissipating heat from the heat exchanger are also fixedly mounted on the top of the carbon dioxide heat pump air conditioner casing;

[0007] It also includes: a cleaning unit, which is used to remove plastic bags, leaves and other substances adsorbed on the surface of the mesh plate to ensure the air intake of the mesh plate, and the cleaning unit is located outside the housing of the carbon dioxide heat pump air conditioner;

[0008] The collecting unit is used for collecting the leaves, plastic bags and other materials processed by the cleaning unit, and the collecting unit is located at the lower edge of the mesh plate.

[0009] Preferably, the cleaning unit includes a cleaning brush roller located on the side wall of the mesh plate, and the brush of the cleaning brush roller contacts the side wall of the mesh plate, a baffle is slidably inserted inside the carbon dioxide heat pump air conditioner casing, and frames are fixedly provided at both ends of the baffle, the frames and the baffle are vertically distributed, a rotating shaft is slidably inserted between the two frames, and the cleaning brush roller is fixedly sleeved on the outer surface of the rotating shaft, a toothed column is distributed on both ends of the cleaning brush roller, and the toothed column is fixedly sleeved on the outer surface of the rotating shaft, and the outside of each toothed column is meshed with A tooth plate is fixed to the outer wall of the carbon dioxide heat pump air conditioner casing, an extension plate is fixedly provided at one end of the baffle, a driving motor is fixedly mounted on the top of the carbon dioxide heat pump air conditioner casing, the output end of the driving motor faces downward, and a threaded rod is fixedly provided at the output end of the driving motor, the extension plate is threadedly sleeved on the outside of the threaded rod, a reciprocating transverse movement component is also provided at one end of the rotating shaft, the driving motor drives the baffle to move up and down through the threaded rod, and the rotating shaft and the cleaning brush roller can rotate through the meshing of the toothed column and the tooth plate during the up and down movement of the rotating shaft.

[0010] Preferably, the reciprocating transverse movement component includes a limit plate fixed to the side wall of the carbon dioxide heat pump air conditioner casing, the limit plate and the tooth plate are parallel, and the limit plate and the rotating shaft are perpendicular, and the limit plate is fixedly provided with a plurality of arc-shaped protrusions distributed in a straight line and equidistantly at one end face of the limit plate close to the rotating shaft, and a ring is rotatably provided at the end of each toothed column away from the cleaning brush roller, the ring is slidably sleeved on the outside of the rotating shaft, and a first spring is fixedly provided between the end of the ring away from the cleaning brush roller and the frame block, the end of the rotating shaft is in sliding contact with the arc-shaped protrusion and the limit plate, and when the rotating shaft is moving downward, the elastic pulling of the first spring and the pushing of the arc-shaped protrusion enable the rotating shaft to perform transverse reciprocating movement during rotation.

[0011] Preferably, the length of the toothed column is greater than the width of the toothed plate, which ensures that the toothed column can slide laterally on the surface of the toothed plate.

[0012] Preferably, the collecting unit includes a receiving plate located directly below the cleaning brush roller, and at least two optical axes are fixedly provided on the bottom of the receiving plate, and a mounting frame is fixedly provided on the outside of the carbon dioxide heat pump air conditioner casing, and the optical axis slides through the mounting frame, and a third spring is sleeved on the outside of each of the optical axes, and the two ends of the third spring are respectively fixed to the receiving plate and the mounting frame, and a plurality of comb teeth are fixedly provided on one end surface of the receiving plate away from the mesh plate and distributed equidistantly in a straight line, and the comb teeth extend upward, and when the cleaning brush roller moves downward in a self-rotating state, its brush will be inserted between the plurality of comb teeth, and the plastic bags, leaves and other materials collected on the surface of the cleaning brush roller will be cleaned up through the plurality of comb teeth.

[0013] Preferably, the comb teeth are made of metal, and the brush of the cleaning roller is made of metal wire or nylon wire. Metal wire or nylon wire has strong toughness. If a burr structure is designed on the surface, materials such as plastic bags or leaves can be effectively cleaned off.

[0014] Preferably, an auxiliary cleaning unit is also provided on the top of the mesh plate, and the auxiliary cleaning unit includes a water tank fixedly mounted on the outside of the carbon dioxide heat pump air conditioner casing, the water tank is located on one side of the lower end of the water tank, and a first connecting pipe is fixedly provided between the water tank and the water tank, and the water gathered in the water tank enters the interior of the water tank through the first connecting pipe, and a water distribution pipe is also fixedly mounted on the side wall of the mesh plate, and the water distribution pipe is located at the top position of the mesh plate, and a plurality of through holes equidistantly distributed in a straight line are fixedly opened at the bottom of the water distribution pipe, and a conveying component and a transmission component are provided inside the water tank, and the heat exchanger undergoes heat exchange, and the generated condensed water will pass through the water tank and the first connecting pipe and gather into the interior of the water tank.

[0015] Preferably, the conveying component includes a sealing cylinder fixedly mounted inside the water tank, and a piston disk is slidably installed inside the sealing cylinder, a piston rod slidingly passing through the sealing cylinder is fixedly arranged on the top of the piston disk, and a second spring is arranged between the other end of the piston disk and the sealing cylinder, a second connecting pipe is fixedly connected to the bottom outer wall of the sealing cylinder, and the other end of the second connecting pipe is connected to the water distribution pipe, a first one-way valve is fixedly arranged at the bottom of the sealing cylinder through a branch pipe, and a second one-way valve is fixedly arranged on the outside of the second connecting pipe, and when the piston disk moves downward, the water inside the sealing cylinder can be transported to the inside of the water distribution pipe through the second connecting pipe.

[0016] Preferably, the conveying direction of the first one-way valve is one-way flow from the water storage tank to the sealing cylinder, and the conveying direction of the second one-way valve is one-way flow from the sealing cylinder to the second connecting pipe.

[0017] Preferably, a transverse plate is fixedly provided on the top of the piston rod, a worm is rotatably installed on the top of the water tank, and the worm and the bottom of the threaded rod are driven and assembled via a transmission gear belt group, a positioning shaft is also rotatably inserted inside the water tank, and the positioning shaft and the worm are vertically distributed, a fixed sleeve on the outer surface of the positioning shaft is provided with a worm wheel movably engaged with the worm, and an eccentric wheel is also eccentrically fixed on the outer surface of the positioning shaft, the outer surface of the eccentric wheel is in sliding contact with the upper end surface of the transverse plate, and the worm drives the worm wheel to rotate, so that the transverse plate can be pressed through the eccentric wheel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can ensure that the mesh plate will not be blocked through the drainage unit, resulting in a small amount of air entering the mesh plate, thereby affecting the heat dissipation effect of the heat dissipation fan on the heat exchanger. In addition, the plastic bags or leaves processed by the drainage unit can be collected under the action of the collection unit to ensure that the drainage unit can always operate effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the water tank structure of the present invention;

[0022] Figure 3 It is a front view of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the frame block, the first spring and the toothed column of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the receiving plate and the comb teeth bar of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the water storage tank of the present invention;

[0026] Figure 7 It is a schematic diagram of the worm wheel and worm structure of the present invention.

[0027] In the figure: 1. CO2 heat pump air conditioner casing; 2. heat exchanger; 3. partition plate; 4. water tank; 5. heat dissipation fan; 6. mesh plate; 7. brush roller; 8. water distribution pipe; 9. limit plate; 10. drive motor; 11. water storage tank; 12. baffle plate; 13. frame block; 14. rotating shaft; 15. first spring; 16. toothed column; 17. first connecting pipe; 18. threaded rod; 19. worm; 20. worm gear; 21. positioning shaft; 22. eccentric wheel; 23. sealing cylinder; 24. piston disc; 25. piston rod; 26. cross plate; 27. second spring; 28. first non-return valve; 29. ​​second connecting pipe; 30. second non-return valve; 31. through hole; 32. arc-shaped protrusion; 33. tooth plate; 34. receiving plate; 35. comb teeth; 36. third spring; 37. optical axis. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1-Figure 5 A heat dissipation device of a carbon dioxide heat pump air conditioner shown in the figure comprises: a carbon dioxide heat pump air conditioner casing 1 is fixedly arranged on a partition plate 3 inside the carbon dioxide heat pump air conditioner casing 1, and a heat exchanger 2 is fixedly mounted between the carbon dioxide heat pump air conditioner casing 1 and the partition plate 3, a water tank 4 for drainage is also arranged inside the partition plate 3, and the two ends of the water tank 4 are in a high and low shape, a mesh plate 6 is fixedly arranged on the side wall of the carbon dioxide heat pump air conditioner casing 1, and a plurality of heat dissipation fans 5 for dissipating heat from the heat exchanger 2 are also fixedly mounted on the top of the carbon dioxide heat pump air conditioner casing 1;

[0030] It also includes: a cleaning unit for removing plastic bags or leaves and other substances adsorbed on the surface of the mesh plate 6 to ensure the air intake of the mesh plate 6, and the cleaning unit is located outside the carbon dioxide heat pump air conditioner casing 1;

[0031] The collecting unit is used to collect materials such as leaves or plastic bags processed by the cleaning unit. The collecting unit is located at the lower edge of the mesh plate 6.

[0032] The cleaning unit includes a cleaning brush roller 7 located on the side wall of the mesh plate 6, and the brush of the cleaning brush roller 7 contacts the side wall of the mesh plate 6. A baffle 12 is slidably inserted inside the carbon dioxide heat pump air conditioner casing 1, and both ends of the baffle 12 are fixedly provided with a frame block 13, the frame block 13 and the baffle 12 are vertically distributed, a rotating shaft 14 is slidably inserted between the two frames 13, and the cleaning brush roller 7 is fixedly sleeved on the outer surface of the rotating shaft 14, and a toothed column 16 is distributed on both ends of the cleaning brush roller 7, and the toothed column 16 is fixedly sleeved on the outer surface of the rotating shaft 14, and each toothed column 16 is meshed with a toothed plate 33 on the outside, and the toothed plate 33 Fixed to the outer wall of the carbon dioxide heat pump air-conditioning casing 1, one end of the baffle 12 is also fixedly provided with an extension plate, the top of the carbon dioxide heat pump air-conditioning casing 1 is fixedly provided with a drive motor 10, the output end of the drive motor 10 faces downward, and the output end of the drive motor 10 is fixedly provided with a threaded rod 18, the extension plate is threadedly sleeved on the outside of the threaded rod 18, and one end of the rotating shaft 14 is also provided with a reciprocating transverse movement component, the drive motor 10 drives the baffle 12 to move up and down through the threaded rod 18, and the rotating shaft 14 can rotate with the cleaning brush roller 7 during the up and down movement of the rotating shaft 14 through the engagement of the toothed column 16 with the tooth plate 33.

[0033] The reciprocating transverse movement component includes a limit plate 9 fixed on the side wall of the carbon dioxide heat pump air conditioner casing 1, the limit plate 9 and the tooth plate 33 are parallel to each other, and the limit plate 9 and the rotating shaft 14 are vertically distributed, and the limit plate 9 is fixedly provided with a plurality of arc-shaped protrusions 32 distributed in a straight line and equidistantly on one end face of the limit plate 9 close to the rotating shaft 14, and a ring is rotatably provided on the end of each toothed column 16 away from the cleaning brush roller 7, and the ring is slidably sleeved on the outside of the rotating shaft 14, and a first spring 15 is fixedly provided between the end of the ring away from the cleaning brush roller 7 and the frame block 13, and the end of the rotating shaft 14 is in sliding contact with the arc-shaped protrusion 32 and the limit plate 9. When the rotating shaft 14 is moving downward, the elastic pulling of the first spring 15 and the pushing of the arc-shaped protrusion 32 enable the rotating shaft 14 to perform transverse reciprocating movement during the rotation process.

[0034] The length of the toothed column 16 is greater than the width of the toothed plate 33 , which ensures that the toothed column 16 can slide laterally on the surface of the toothed plate 33 .

[0035] The collecting unit includes a receiving plate 34 located directly below the cleaning roller 7, and at least two optical axes 37 are fixedly provided at the bottom of the receiving plate 34. A mounting frame is fixedly provided on the outside of the carbon dioxide heat pump air conditioner casing 1, and the optical axis 37 slides through the mounting frame. A third spring 36 is sleeved on the outside of each optical axis 37, and the two ends of the third spring 36 are respectively fixed to the receiving plate 34 and the mounting frame. A plurality of comb teeth 35 distributed in a straight line and at equal intervals are fixedly provided on one end surface of the receiving plate 34 away from the mesh plate 6, and the comb teeth 35 extend upward. When the cleaning roller 7 moves downward in a self-rotating state, its brush will be inserted between the plurality of comb teeth 35, and the plastic bags, leaves and other materials collected on the surface of the cleaning roller 7 will be cleaned up through the plurality of comb teeth 35.

[0036] The comb teeth 35 are made of metal, and the brush of the cleaning roller 7 is made of metal wire or nylon wire. The metal wire or nylon wire has strong toughness. If a burr structure is designed on the surface, it can effectively clean plastic bags, leaves and other materials.

[0037] Working principle: When the CO2 heat pump air conditioner is started, the cooling fan 5 will also be started to dissipate heat from the heat exchanger 2 in an exhaust manner, and the outside air enters the interior of the CO2 heat pump air conditioner casing 1 through the mesh plate 6. At this time, the mesh holes of the mesh plate 6 will generate a large suction force, so the leaves or plastic bags from the outside are easily adsorbed on the mesh plate 6. After being adsorbed, it will affect the air intake of the mesh plate 6. If there are many leaves or plastic bags attached to the mesh plate 6, it will seriously affect the cooling effect of the cooling fan 5 on the heat exchanger 2. For this reason, the staff should regularly start the drive motor 10 and start the drive motor 10 to drive The threaded rod 18 rotates, thereby driving the baffle plate 12 to move from top to bottom. During the movement, since the toothed column 16 is meshed with the toothed plate 33, the cleaning roller 7 can move downward in a rotating state. During the rotation, the brush of the cleaning roller 7 can roll up the leaves or plastic bags attached to the surface of the mesh plate 6. Moreover, due to the effect of the baffle plate 12, the baffle plate 12 is located directly behind the cleaning roller 7. When the baffle plate 12 moves downward together with the cleaning roller 7, the mesh of the mesh plate 6 between the two will generate suction. Because the mesh of this part is blocked by the baffle plate 12, it is more convenient for the cleaning roller 7 to roll up materials such as plastic bags or leaves.

[0038] As the cleaning roller 7 continues to move downward, it will also contact the receiving plate 34 and the comb teeth 35. The rotation of the cleaning roller 7 can allow its brush to be inserted between the plurality of comb teeth 35, and the plastic bags or leaves rolled up on the surface of the cleaning roller 7 can be cleaned off through the comb teeth 35, thereby ensuring the cleanliness of the cleaning roller 7 for repeated use. Moreover, the cleaned plastic bags or plastics are interlaced and limited by the plurality of comb teeth 35, so that they cannot contact the mesh plate 6, which can ensure the effective air intake of the mesh plate 6, thereby ensuring the effectiveness of the heat dissipation treatment of the heat exchanger 2 by the heat dissipation fan 5.

[0039] Example 2: Please refer to Figure 5-Figure 7 This embodiment is a further explanation of the first embodiment. An auxiliary cleaning unit is also provided on the top of the mesh plate 6. The auxiliary cleaning unit includes a water storage tank 11 fixedly mounted on the outside of the carbon dioxide heat pump air conditioner casing 1. The water storage tank 11 is located on one side of the lower end of the water tank 4. A first connecting pipe 17 is fixedly arranged between the water storage tank 11 and the water tank 4. The water gathered in the water tank 4 enters the interior of the water storage tank 11 through the first connecting pipe 17. A water distribution pipe 8 is also fixedly mounted on the side wall of the mesh plate 6. The water distribution pipe 8 is located at the top of the mesh plate 6, and a plurality of through holes 31 are fixedly opened at the bottom of the water distribution pipe 8 and are equidistantly distributed in a straight line. A conveying component and a transmission component are arranged inside the water storage tank 11. The heat exchanger 2 undergoes cold and heat exchange, and the condensed water generated will pass through the water tank 4 and the first connecting pipe 17 and gather into the interior of the water storage tank 11.

[0040] The conveying component includes a sealing cylinder 23 fixedly mounted inside the water tank 11, and a piston disk 24 is slidably installed inside the sealing cylinder 23, a piston rod 25 slidingly passing through the sealing cylinder 23 is fixedly arranged on the top of the piston disk 24, and a second spring 27 is arranged between the other end of the piston disk 24 and the sealing cylinder 23, a second connecting pipe 29 is fixedly connected to the outer wall of the bottom of the sealing cylinder 23, and the other end of the second connecting pipe 29 is connected to the water distribution pipe 8, a first one-way valve 28 is fixedly connected to the bottom of the sealing cylinder 23 through a branch pipe, and a second one-way valve 30 is fixedly arranged on the outside of the second connecting pipe 29, when the piston disk 24 moves downward, the water inside the sealing cylinder 23 can be transported to the inside of the water distribution pipe 8 through the second connecting pipe 29.

[0041] The conveying direction of the first one-way valve 28 is one-way flow from the water storage tank 11 to the sealing cylinder 23 , and the conveying direction of the second one-way valve 30 is one-way flow from the sealing cylinder 23 to the second connecting pipe 29 .

[0042] A transverse plate 26 is fixedly provided on the top of the piston rod 25, a worm 19 is rotatably installed on the top of the water tank 11, and the worm 19 and the bottom of the threaded rod 18 are assembled through a transmission gear belt group. A positioning shaft 21 is also rotatably inserted inside the water tank 11, and the positioning shaft 21 and the worm 19 are vertically distributed. A worm wheel 20 movably meshed with the worm 19 is fixedly sleeved on the outer surface of the positioning shaft 21, and an eccentric wheel 22 is also eccentrically fixedly sleeved on the outer surface of the positioning shaft 21. The outer surface of the eccentric wheel 22 is in sliding contact with the upper end surface of the transverse plate 26. The worm 19 drives the worm wheel 20 to rotate, and the transverse plate 26 can be pressed through the eccentric wheel 22.

[0043] In this embodiment, the heat exchanger 2 generates condensed water during operation. The condensed water enters the water storage tank 11 through the first connecting pipe 17 under the guidance of the water tank 4. During the rotation of the threaded rod 18, the worm 19 can be driven to rotate synchronously through the transmission gear belt group. The worm 19 drives the positioning shaft 21 and the eccentric wheel 22 to rotate through the worm wheel 20. During the rotation, the piston rod 25 can be pressed by the cross plate 26. At the same time, the piston disc 24 can be reciprocated under the action of the second spring 27. The reciprocating movement of the piston disc 24 cooperates with the action of the first check valve 28 and the second check valve 30 to suck the condensed water inside the water storage tank 11 into the inside of the sealing cylinder 23, and then transport it from the inside of the sealing cylinder 23 to the inside of the water distribution pipe 8 through the second connecting pipe 29, and finally drips through a plurality of through holes 31. The condensed water will drip on the surface of the mesh plate 6 and the surface of the cleaning roller 7. When the cleaning roller 7 is running, it can clean the dust accumulated on the surface of the mesh plate 6 to achieve self-cleaning of the mesh plate 6.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation device for a carbon dioxide heat pump air conditioner, characterized in that: include: A carbon dioxide heat pump air conditioner casing (1), a partition plate (3) fixedly arranged inside the carbon dioxide heat pump air conditioner casing (1), a heat exchanger (2) fixedly mounted between the carbon dioxide heat pump air conditioner casing (1) and the partition plate (3), a water tank (4) for drainage is also arranged inside the partition plate (3), and the two ends of the water tank (4) are one high and one low, a mesh plate (6) is fixedly mounted on the side wall of the carbon dioxide heat pump air conditioner casing (1), and a plurality of heat dissipation fans (5) for dissipating heat from the heat exchanger (2) are also fixedly mounted on the top of the carbon dioxide heat pump air conditioner casing (1); Also includes: A cleaning unit, used to remove plastic bags or leaves adsorbed on the surface of the mesh plate (6) to ensure the air intake of the mesh plate (6), the cleaning unit being located outside the carbon dioxide heat pump air conditioner casing (1); A collecting unit, used for collecting leaves or plastic bags processed by the drainage unit, the collecting unit being located at the lower edge of the mesh plate (6); The cleaning unit comprises a cleaning brush roller (7) located on the side wall of the mesh plate (6), and the brush of the cleaning brush roller (7) contacts the side wall of the mesh plate (6); a baffle (12) is slidably inserted inside the carbon dioxide heat pump air conditioner casing (1), and both ends of the baffle (12) are fixedly provided with a frame block (13), the frame block (13) and the baffle (12) are vertically distributed, a rotating shaft (14) is slidably inserted between the two frames (13), and the cleaning brush roller (7) is fixedly sleeved on the outer surface of the rotating shaft (14), a toothed column (16) is distributed on both ends of the cleaning brush roller (7), and the toothed column (16) is fixedly sleeved on the outer surface of the rotating shaft (14), and a toothed plate (33) is meshedly provided on the outside of each toothed column (16), and one end of the rotating shaft (14) is also provided with a reciprocating transverse component; The reciprocating transverse displacement component comprises a limit plate (9) fixed to the side wall of the carbon dioxide heat pump air conditioner casing (1); the limit plate (9) and the tooth plate (33) are arranged in parallel, and the limit plate (9) and the rotating shaft (14) are arranged in perpendicular relation; a plurality of arc-shaped protrusions (32) arranged in a straight line and equidistantly are fixedly arranged on one end face of the limit plate (9) close to the rotating shaft (14); a sleeve ring is rotatably arranged at one end of each of the toothed columns (16) away from the cleaning brush roller (7); the sleeve ring is slidably sleeved on the outside of the rotating shaft (14); a first spring (15) is fixedly arranged between one end of the sleeve ring away from the cleaning brush roller (7) and the frame block (13); and the end of the rotating shaft (14) is in sliding contact with the arc-shaped protrusion (32) and the limit plate (9).

2. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 1, characterized in that: An extension plate is fixedly provided at one end of the baffle (12); the tooth plate (33) is fixed to the outer wall of the carbon dioxide heat pump air conditioner casing (1); a drive motor (10) is fixedly mounted on the top of the carbon dioxide heat pump air conditioner casing (1); the output end of the drive motor (10) faces downward, and a threaded rod (18) is fixedly provided at the output end of the drive motor (10); and the extension plate is threadedly sleeved on the outside of the threaded rod (18).

3. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 1, characterized in that: The length of the toothed column (16) is greater than the width of the toothed plate (33).

4. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 1, characterized in that: The collecting unit comprises a receiving plate (34) located directly below the cleaning roller (7), and at least two optical axes (37) are fixedly arranged at the bottom of the receiving plate (34); a mounting frame is fixedly arranged on the outside of the carbon dioxide heat pump air conditioner casing (1), and the optical axis (37) slides through the mounting frame; a third spring (36) is sleeved on the outside of each of the optical axes (37), and the two ends of the third spring (36) are respectively fixed to the receiving plate (34) and the mounting frame; a plurality of comb teeth (35) are fixedly arranged on one end surface of the receiving plate (34) away from the mesh plate (6) and are equidistantly distributed in a straight line, and the comb teeth (35) extend upward.

5. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 4, characterized in that: The comb teeth (35) are made of metal material, and the brush of the cleaning brush roller (7) is made of metal wire or nylon wire.

6. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 2, characterized in that: An auxiliary cleaning unit is also provided on the top of the mesh plate (6), and the auxiliary cleaning unit comprises a water storage tank (11) fixedly mounted on the outside of the carbon dioxide heat pump air conditioner casing (1), the water storage tank (11) being located on one side of the lower end of the water tank (4), a first connecting pipe (17) being fixedly arranged between the water storage tank (11) and the water tank (4), and water collected in the water tank (4) enters the interior of the water storage tank (11) through the first connecting pipe (17), a water distribution pipe (8) is also fixedly mounted on the side wall of the mesh plate (6), the water distribution pipe (8) being located at the top of the mesh plate (6), and a plurality of through holes (31) distributed in a straight line and at equal intervals are fixedly opened at the bottom of the water distribution pipe (8), and a conveying component and a transmission component are arranged inside the water storage tank (11).

7. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 6, characterized in that: The conveying component comprises a sealing cylinder (23) fixedly mounted inside the water storage tank (11), and a piston disc (24) is slidably mounted inside the sealing cylinder (23), a piston rod (25) is fixedly arranged on the top of the piston disc (24) and slides through the sealing cylinder (23), and a second spring (27) is arranged between the other end of the piston disc (24) and the sealing cylinder (23), a second connecting pipe (29) is fixedly arranged on the outer wall of the bottom of the sealing cylinder (23), and the other end of the second connecting pipe (29) is mutually connected with the water distribution pipe (8), a first one-way valve (28) is fixedly arranged on the bottom of the sealing cylinder (23) through a branch pipe, and a second one-way valve (30) is fixedly arranged on the outside of the second connecting pipe (29).

8. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 7, characterized in that: The conveying direction of the first one-way valve (28) is one-way flow from the water storage tank (11) to the sealing cylinder (23), and the conveying direction of the second one-way valve (30) is one-way flow from the sealing cylinder (23) to the second connecting pipe (29).

9. The heat dissipation device of a carbon dioxide heat pump air conditioner according to claim 7, characterized in that: A transverse plate (26) is fixedly provided on the top of the piston rod (25); a worm (19) is rotatably mounted on the top of the water storage tank (11); the worm (19) and the bottom of the threaded rod (18) are assembled and driven by a transmission gear belt group; a positioning shaft (21) is also rotatably inserted inside the water storage tank (11); the positioning shaft (21) and the worm (19) are vertically distributed; a worm wheel (20) movably meshing with the worm (19) is fixedly sleeved on the outer surface of the positioning shaft (21); an eccentric wheel (22) is also eccentrically fixedly sleeved on the outer surface of the positioning shaft (21); and the outer surface of the eccentric wheel (22) is in sliding contact with the upper end surface of the transverse plate (26).

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