Air cooling type heat pump for building heating system

Abstract

The invention relates to the technical field of heat pump systems, and discloses an air-cooled heat pump for a building heating system, which comprises an outdoor evaporator, the outdoor evaporator comprises a shell, a fan is arranged on the outer wall of the shell, a condenser pipe is arranged in the shell, and a defrosting device is arranged on one side, far away from the fan, of the condenser pipe. The defrosting device comprises a partition plate fixedly connected into the shell, the outer wall of the partition plate is slidably connected with an insertion sliding block, and a rotary cleaning device and a telescopic cleaning device are arranged in the insertion sliding block. The rotary cleaning device comprises a mounting main rotating rod arranged in the insertion sliding block, one end of the mounting main rotating rod is fixedly connected with a cleaning rotating plate, the telescopic cleaning device comprises an insertion rod arranged in the mounting main rotating rod, and one end of the insertion rod is fixedly connected with a telescopic cleaning rod. The defrosting device has the beneficial effect that the problem that the normal operation of the heat pump can be influenced by frost attached to the condensation pipe is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heat pump systems, in particular to an air-cooled heat pump for a building heating system. Background Art

[0002] Air-cooled heat pump, also known as air-cooled heat pump unit or air-cooled heat pump, is an air conditioning device that combines air-cooled chiller and heat pump technology to achieve cooling and heating functions in the same system. The working principle of air-cooled heat pump is based on the heat pump principle, that is, the transfer of heat is achieved through the phase change cycle of refrigerant. In the refrigeration cycle, the refrigerant absorbs indoor heat in the evaporator and evaporates, and is then compressed by the compressor to increase its temperature and pressure. Then it releases heat to the outside air (air-cooled) in the condenser, returns to liquid state, and finally reduces the pressure through the expansion valve and enters the evaporator again. In the heating mode, this process is reversed, the refrigerant absorbs heat in the external condenser, and then releases heat in the indoor evaporator. The main components of the air-cooled heat pump include compressor, evaporator, condenser and expansion valve. Among them, the compressor is the heart component, responsible for driving the refrigerant circulation and increasing the temperature and pressure of the refrigerant.

[0003] When the air-cooled heat pump is working, frost will appear on the surface of the outdoor evaporator fins. This is because the air-cooled heat pump uses the ambient air as the cold source. When the surface temperature of the outdoor evaporator fins is lower than the dew point temperature of water vapor, condensed water will be generated on the surface. If the ambient temperature further drops below 0 degrees, frost will form on the evaporator surface.

[0004] Frosting has a certain impact on the operating performance of air-cooled heat pumps. On the one hand, the frost layer will increase thermal resistance and reduce heat transfer effect; on the other hand, the increase in frost thickness will increase air flow resistance and reduce air flow, thereby reducing the heat exchange capacity on the wind side. Overall, this will lead to a decrease in the heating effect of the heat pump, a decrease in energy efficiency, and may even affect the normal operation of the heat pump; therefore, it does not meet the existing needs. In this regard, we propose an air-cooled heat pump for building heating systems. Summary of the invention

[0005] The present invention provides an air-cooled heat pump for a building heating system, which has the beneficial effect of performing a defrosting operation when frost is generated on the condenser tube of an outdoor evaporator, thereby solving the problem mentioned in the above background technology that frost attached to the condenser tube will affect the normal operation of the heat pump.

[0006] The present invention provides the following technical solution: an air-cooled heat pump for a building heating system, comprising an outdoor evaporator, the outdoor evaporator comprising a shell, a fan is arranged on the outer wall of the shell, a condenser is arranged in the shell, and a defrosting device is arranged on the side of the condenser away from the fan.

[0007] The defrosting device comprises a partition fixedly connected in the shell, an outer wall of the partition is slidably connected with a plug-in slider, and a rotating cleaning device and a telescopic cleaning device are arranged in the plug-in slider.

[0008] The rotary cleaning device comprises a main rotating rod installed in the plug-in slider, one end of which is fixedly connected with a cleaning rotating plate, and the cleaning rotating plate is a circular plate.

[0009] The telescopic cleaning device comprises a plug-in rod arranged in the main rotating rod, one end of the plug-in rod is fixedly connected to a telescopic cleaning rod, the telescopic cleaning rod is a rectangular rod, and the plug-in rod is a cylindrical rod.

[0010] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a screw slot is provided in the plug-in slider, a rotating screw is rotatably connected in the screw slot, one side of the rotating screw is rotatably connected in the shell, the other end of the rotating screw is installed on the output end of the motor, and the motor is installed in the shell.

[0011] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, the main rotating rod is installed and rotatably connected in a rotating groove, the rotating groove is opened in the plug-in slider, and the end of the main rotating rod installed away from the cleaning rotating plate is fixedly connected to a rotating gear, the rotating gear is meshedly connected to a rack, and the rack is fixedly connected in the partition.

[0012] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a track groove is opened in the partition, a slider is slidably connected in the track groove, one end of the slider is fixedly connected to the plug rod, the plug rod is slidably connected in the telescopic groove, and the telescopic groove is opened in the main mounting rotating rod.

[0013] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a limiting groove is provided in the main rotating rod for installation, a limiting plate is slidably connected in the limiting groove, the limiting plate is fixedly connected to the outer wall of the plug-in rod, a limiting spring is installed on one side of the limiting plate, and the other end of the limiting spring is fixedly connected in the limiting groove.

[0014] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a rotation groove is opened in the limit plate, a rotation rod is rotatably connected in the rotation groove, the limit spring is fixedly connected to one side of the rotation rod, and the cross-section of the rotation rod and the rotation groove is T-shaped.

[0015] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a swinging cleaning device is provided in the telescopic cleaning rod, and the swinging cleaning device includes a movable groove and a connecting groove provided in the telescopic cleaning rod, and a fixed rack is provided in the movable groove, and the fixed rack is inserted in the connecting groove, and the other end of the fixed rack is fixedly connected to one end of the main rotating rod for installation, and the fixed rack is meshedly connected with a gear, and the gear is rotatably connected in a fixed shaft, and the fixed shaft is fixedly connected in the movable groove, and a scraper is fixedly connected to the side wall of the gear, and the scraper extends out of the telescopic cleaning rod, and the inner wall of the scraper contacts the condenser.

[0016] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a pneumatic device is arranged in the movable groove, and the pneumatic device includes a piston cylinder fixedly connected in the movable groove, a piston plate is slidably connected in the piston cylinder, the top of the piston plate abuts against the fixed rack, a piston spring is fixedly connected to one side of the piston plate, the other end of the piston spring is installed in the piston cylinder, and an air outlet hole is opened in the telescopic cleaning rod, and the air outlet hole is connected to the piston cylinder.

[0017] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, a frost blowing device is provided in the shell, the frost blowing device includes a bellows installed on one side of the plug-in slider, the other end of the bellows is installed on the inner wall of the shell, a mounting groove, an air inlet hole, and an exhaust hole are provided in the shell, an elastic airbag is installed in the mounting groove, the elastic airbag is connected to the air inlet hole and the exhaust hole, the bellows is connected to the elastic airbag through the air inlet hole, and one side of the exhaust hole is blocked by a sealing plate.

[0018] As an optional solution for an air-cooled heat pump for a building heating system described in the present invention, the blocking plate is slidably connected in a blocking slide groove, the blocking slide groove is opened in the shell, one side of the blocking plate is designed as a slope, the slope of the blocking plate is resisted by a release rod, the release rod is arranged in the shell, one side of the blocking plate is fixedly connected with a release spring, the other end of the release spring is fixedly connected in the blocking slide groove, and the cross-section of the blocking slide groove is L-shaped.

[0019] The present invention has the following beneficial effects:

[0020] 1. The building heating system uses an air-cooled heat pump. Through the design of the defrost device, the cleaning rotating plate and the telescopic cleaning rod installed on the defrost device can be driven to clean the side walls and gaps of the condenser tube, and the frost attached to the surface of the condenser tube can be effectively cleaned, thereby ensuring the heat transfer efficiency, ensuring the air circulation inside the outdoor evaporator, and thus ensuring the normal operation of the heat pump. Under the action of the rotating cleaning device, the cleaning rotating plate can rotate as the plug-in slider slides. Under the action of the telescopic cleaning device, the frost in the gap of the condenser tube can be slid back and forth, so that the brushes on the upper and lower surfaces of the rectangular telescopic cleaning rod can clean the frost in the gap of the condenser tube. Through this design, the cleaning effect of the frost on one side of the condenser tube can be further improved, further ensuring the heat exchange effect of the heat pump.

[0021] 2. The building heating system uses an air-cooled heat pump. The swing cleaning device is designed to clean the frost on the side of the condenser away from the cleaning rotating plate. Through the design of the swing cleaning device, the telescopic cleaning rod can be driven to slide left and right relative to the main rotating rod to drive the scraper at the bottom of the telescopic cleaning rod to wrap the circular pipe of the condenser. During the relative sliding of the two, the fixed rack and gear in the telescopic cleaning rod engage with each other, thereby driving the scraper at the bottom of the gear to swing. When the telescopic cleaning rod is at the far left end, the scraper is located at the far left of the condenser, and when the telescopic cleaning rod is at the far right end, the scraper is located at the far right of the condenser. The swinging of the scraper can more comprehensively clean the curved side wall of the condenser, thereby improving the cleaning effect of the frost on the side wall of the condenser.

[0022] 3. The building heating system uses an air-cooled heat pump, and the frost blowing device is designed to clean the frost remaining on the surface of the cleaning rotating plate and the telescopic cleaning rod. To ensure the subsequent cleaning effect, in the process of the plug-in slider sliding relative to the partition, the plug-in slider continuously squeezes the bellows and drives the bellows to contract, and transmits the air pressure in the bellows to the elastic airbag through the air inlet hole, so that the elastic airbag continuously collides, and then has a certain elasticity with the elastic airbag, and the exhaust hole is blocked by the blocking plate, so the inside of the elastic airbag is continuously pressurized. When the plug-in slider slides to one side of the shell and contacts the release rod, the release rod will drive the blocking plate to slide to the left. At this time, the blocking plate will not block the exhaust hole. At this time, the squeezed gas in the elastic airbag will be instantly discharged through the exhaust hole and blown to the telescopic cleaning rod and the cleaning rotating plate that slide to one side of the exhaust hole. Through this design, the frost remaining on the cleaning rotating plate and the telescopic cleaning rod can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention.

[0024] Figure 2 It is a front structural schematic diagram of the present invention.

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-section structure of section 1-1.

[0026] Figure 4 For the present invention Figure 2 Section 2-2 shows the schematic diagram of the structure of Mina.

[0027] Figure 5 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0028] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0029] Figure 7 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0030] Figure 8 It is a structural schematic diagram of the sealing plate of the present invention.

[0031] In the figure: 1. outdoor evaporator; 11. shell; 12. fan; 13. condenser; 2. defrosting device; 21. partition; 22. plug-in slider; 23. rotating screw; 24. motor; 25. screw slot; 3. rotating cleaning device; 31. rotating slot; 32. installing main rotating rod; 33. cleaning rotating plate; 34. rotating gear; 35. rack; 4. telescopic cleaning device; 41. track slot; 42. slider; 43. plug-in rod; 44. telescopic slot; 45. limit slot; 46. limit plate; 47. limit spring; 48 , self-rotating groove; 49, self-rotating rod; 410, telescopic cleaning rod; 5, swing cleaning device; 51, movable groove; 52, fixed rack; 53, fixed shaft; 54, gear; 55, scraper; 56, connecting groove; 6, pneumatic device; 61, piston cylinder; 62, piston plate; 63, piston spring; 64, air outlet; 7, defrosting device; 71, bellows; 72, mounting groove; 73, elastic airbag; 74, air inlet; 75, exhaust hole; 76, blocking plate; 77, blocking slide; 78, release rod; 79, release spring. DETAILED DESCRIPTION

[0032] 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.

[0033] Example 1: This example is intended to help solve the problem that frost on the condenser tube 13 affects the normal operation of the heat pump. Figures 1 to 8 A wind-cooled heat pump for a building heating system includes an outdoor evaporator 1, the outdoor evaporator 1 includes a shell 11, a fan 12 is arranged on the outer wall of the shell 11, a condenser 13 is arranged in the shell 11, and a defrosting device 2 is arranged on the side of the condenser 13 away from the fan 12.

[0034] The defrosting device 2 comprises a partition 21 fixedly connected in the shell 11 , an outer wall of the partition 21 is slidably connected with a plug-in slider 22 , and a rotating cleaning device 3 and a telescopic cleaning device 4 are arranged in the plug-in slider 22 .

[0035] A screw slot 25 is provided in the plug-in slider 22 , and a rotating screw 23 is rotatably connected in the screw slot 25 . One side of the rotating screw 23 is rotatably connected in the housing 11 , and the other end of the rotating screw 23 is installed at the output end of the motor 24 , and the motor 24 is installed in the housing 11 .

[0036] The rotary cleaning device 3 comprises a main rotating rod 32 arranged in the plug-in slider 22 , and one end of the main rotating rod 32 is fixedly connected to a cleaning rotating plate 33 .

[0037] The telescopic cleaning device 4 includes a plug-in rod 43 arranged in the main rotating rod 32, and one end of the plug-in rod 43 is fixedly connected to the telescopic cleaning rod 410.

[0038] Through the design of the motor 24 and the rotating screw 23, the plug-in slider 22 can be driven to slide on the outer wall of the partition 21, thereby driving the cleaning rotating plate 33 and the telescopic cleaning rod 410 installed on one side of the plug-in slider 22 to clean the frost on the side wall of the condenser 13.

[0039] Through the design of the defrost device 2, the cleaning rotating plate 33 and the telescopic cleaning rod 410 installed on the defrost device 2 can be driven to clean the side walls and gaps of the condenser 13, effectively cleaning the frost attached to the surface of the condenser 13, thereby ensuring the heat transfer efficiency, ensuring the air circulation inside the outdoor evaporator 1, and thus ensuring the normal operation of the heat pump.

[0040] The main rotating rod 32 is installed and rotatably connected in the rotating groove 31, and the rotating groove 31 is opened in the plug-in slider 22. The end of the main rotating rod 32 away from the cleaning rotating plate 33 is fixedly connected with a rotating gear 34, and the rotating gear 34 is meshedly connected with a rack 35, and the rack 35 is fixedly connected in the partition 21.

[0041] Due to the relative sliding between the partition 21 and the plug-in slider 22, and the main rotating rod 32 is installed in the plug-in slider 22, and the rotating gear 34 on one side of the main rotating rod 32 is meshed with the rack 35 in the partition 21, the plug-in slider 22 will drive the main rotating rod 32 to rotate during the sliding process on the outer side of the partition 21, and then drive the cleaning rotating plate 33 at the other end of the main rotating rod 32 to rotate synchronously. The rotation of the cleaning rotating plate 33 can further improve the cleaning effect of the frost on the side wall of the condenser 13, thereby effectively ensuring the heat exchange efficiency of the heat pump.

[0042] A track groove 41 is provided in the partition 21 , a slider 42 is slidably connected in the track groove 41 , a plug rod 43 is fixedly connected to one end of the slider 42 , the plug rod 43 is slidably connected in the telescopic groove 44 , and the telescopic groove 44 is provided in the main rotating rod 32 .

[0043] A limiting groove 45 is provided in the main rotating rod 32 , and a limiting plate 46 is slidably connected in the limiting groove 45 . The limiting plate 46 is fixedly connected to the outer wall of the plug-in rod 43 . A limiting spring 47 is installed on one side of the limiting plate 46 , and the other end of the limiting spring 47 is fixedly connected in the limiting groove 45 .

[0044] A rotation groove 48 is defined in the limit plate 46 , a rotation rod 49 is rotatably connected in the rotation groove 48 , and a limit spring 47 is fixedly connected to one side of the rotation rod 49 .

[0045] By designing the telescopic cleaning device 4, the frost at the gap of the condenser tube 13 can be slid back and forth, so that the brushes on the upper and lower surfaces of the rectangular telescopic cleaning rod 410 can clean the frost at the gap of the condenser tube 13. By this design, the cleaning effect of the frost on one side of the condenser tube 13 can be further improved, and the heat exchange effect of the heat pump can be further guaranteed. In the process of the plug-in slider 22 sliding relative to the partition 21, the slider 42 in the plug-in slider 22 slides in the track groove 41. Under the design of the track groove 41 and the reset effect of the limit spring 47, the plug-in slider 22 continuously swings left and right (refer to Figure 5 ), through this design, the telescopic cleaning rod 410 is driven to slide and clean the gap of the condenser tube 13, thereby improving the cleaning effect of the gap of the condenser tube 13, further ensuring the heat exchange efficiency of the heat pump, and improving the use effect of the heat pump.

[0046] Since the main rotating rod 32 is installed in a rotating state, and the telescopic cleaning rod 410 cannot rotate due to its rectangular design, the plug-in rod 43, the telescopic slot 44, the limit slot 45, and the limit plate 46 are designed to be circular, and a rotation slot 48 and a rotation rod 49 are provided in the limit plate 46. While ensuring the connection relationship between the main rotating rod 32 and the plug-in rod 43, the two can be relatively independent and will not get stuck, thereby improving the stability of the structural operation.

[0047] Embodiment 2, this embodiment is intended to promote the solution of the problem that the outer wall away from the plug-in slider 22 cannot be cleaned by telescopic and rotating. This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 8 ,

[0048] A swing cleaning device 5 is provided in the telescopic cleaning rod 410, and the swing cleaning device 5 includes a movable groove 51 and a connecting groove 56 which are opened in the telescopic cleaning rod 410. A fixed rack 52 is provided in the movable groove 51, and the fixed rack 52 is inserted in the connecting groove 56. The other end of the fixed rack 52 is fixedly connected to one end of the main rotating rod 32. The fixed rack 52 is meshedly connected with a gear 54, and the gear 54 is rotatably connected in the fixed shaft 53. The fixed shaft 53 is fixedly connected in the movable groove 51. A scraper 55 is fixedly connected to the side wall of the gear 54. The scraper 55 extends out of the telescopic cleaning rod 410, and the inner wall of the scraper 55 contacts the condensation tube 13.

[0049] The swing cleaning device 5 is designed to clean the frost on the side of the condenser 13 away from the cleaning rotating plate 33. Through the design of the swing cleaning device 5, when the telescopic cleaning rod 410 slides left and right relative to the main rotating rod 32, the scraper 55 at the bottom of the telescopic cleaning rod 410 can be driven to wrap the circular pipe of the condenser 13. During the relative sliding of the two, the fixed rack 52 and the gear 54 in the telescopic cleaning rod 410 engage with each other, thereby driving the scraper 55 at the bottom of the gear 54 to swing. When the telescopic cleaning rod 410 is at the leftmost end, the scraper 55 is located at the leftmost side of the condenser 13. When the telescopic cleaning rod 410 is at the rightmost end, the scraper 55 is located at the rightmost side of the condenser 13. Through the swing of the scraper 55, the curved side wall of the condenser 13 can be cleaned more comprehensively, thereby improving the cleaning effect of the frost on the side wall of the condenser 13.

[0050] A pneumatic device 6 is arranged in the movable groove 51, and the pneumatic device 6 includes a piston cylinder 61 fixedly connected in the movable groove 51, a piston plate 62 is slidably connected in the piston cylinder 61, the top of the piston plate 62 abuts against the fixed rack 52, a piston spring 63 is fixedly connected to one side of the piston plate 62, and the other end of the piston spring 63 is installed in the piston cylinder 61, and an air outlet hole 64 is opened in the telescopic cleaning rod 410, and the air outlet hole 64 is connected to the piston cylinder 61.

[0051] The pneumatic device 6 is designed to clean the frost that has not fallen off the condenser tube 13 after being scraped and remains on the outer wall of the condenser tube 13. When the telescopic cleaning rod 410 slides relative to the fixed rack 52, the tooth block of the fixed rack 52 continuously contacts the top of the piston plate 62, and under the action of the piston spring 63, it continuously makes a piston movement in the piston cylinder 61. Through this drive, the outer wall of the condenser tube 13 can be continuously sprayed through the air outlet 64. Through this spraying, the frost that has not fallen off and remains on the surface of the condenser tube 13 can be cleaned, thereby ensuring the cleaning effect of the frost on the condenser tube 13.

[0052] Example 3: This example is intended to help solve the problem that there may be residue on the cleaning plate during the cleaning process. This example is an explanation based on Example 2. For details, please refer to Figures 1 to 8 A frost blowing device 7 is provided in the shell 11, and the frost blowing device 7 includes a bellows 71 installed on one side of the plug-in slider 22. The other end of the bellows 71 is installed on the inner wall of the shell 11. A mounting groove 72, an air inlet hole 74, and an exhaust hole 75 are provided in the shell 11. An elastic airbag 73 is installed in the mounting groove 72. The elastic airbag 73 is connected to the air inlet hole 74 and the exhaust hole 75. The bellows 71 is connected to the elastic airbag 73 through the air inlet hole 74, and one side of the exhaust hole 75 is blocked by a blocking plate 76.

[0053] The blocking plate 76 is slidably connected in the blocking slot 77, and the blocking slot 77 is opened in the shell 11. One side of the blocking plate 76 is designed as a slope, and the slope of the blocking plate 76 is resisted by the release rod 78. The release rod 78 is set in the shell 11. One side of the blocking plate 76 is fixedly connected to a release spring 79, and the other end of the release spring 79 is fixedly connected in the blocking slot 77.

[0054] The frost blowing device 7 is designed to clean the frost remaining on the surface of the cleaning rotating plate 33 and the telescopic cleaning rod 410. To ensure the subsequent cleaning effect, during the sliding of the plug-in slider 22 relative to the partition plate 21, the plug-in slider 22 continuously squeezes the bellows 71 and drives the bellows 71 to contract, and transmits the air pressure in the bellows 71 to the elastic airbag 73 through the air inlet hole 74, so that the elastic airbag 73 continuously collides with the elastic airbag 73, and then has a certain elasticity with the elastic airbag 73, and the exhaust hole 75 is blocked by the blocking plate 76, so the inside of the elastic airbag 73 is continuously pressurized, and when the plug-in slider 22 slides to one side of the shell 11 and contacts the release rod 78, the release rod 78 will drive the blocking plate 76 to slide to the left (refer to Figure 8), at this time, the sealing plate 76 will not block the exhaust hole 75. At this time, the gas squeezed in the elastic airbag 73 will be instantly discharged through the exhaust hole 75 and blown to the telescopic cleaning rod 410 and the cleaning rotating plate 33 that slide to one side of the exhaust hole 75. Through this design, the frost remaining on the cleaning rotating plate 33 and the telescopic cleaning rod 410 can be cleaned.

[0055] 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.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An air-cooled heat pump for a building heating system, comprising an outdoor evaporator (1), characterized in that: The outdoor evaporator (1) comprises a shell (11), a fan (12) is arranged on the outer wall of the shell (11), a condenser (13) is arranged inside the shell (11), and a defrosting device (2) is arranged on a side of the condenser (13) away from the fan (12); The defrosting device (2) comprises a partition (21) fixedly connected to the shell (11); the outer wall of the partition (21) is slidably connected to a plug-in slider (22); a screw groove (25) is provided in the plug-in slider (22); a rotating screw (23) is rotatably connected in the screw groove (25); one side of the rotating screw (23) is rotatably connected in the shell (11); a frost blowing device (7) is provided in the shell (11); and a rotating cleaning device (3) and a telescopic cleaning device (4) are provided in the plug-in slider (22); The rotary cleaning device (3) comprises a mounting main rotating rod (32) arranged in the plug-in slider (22), one end of the mounting main rotating rod (32) is fixedly connected to a cleaning rotating plate (33), the mounting main rotating rod (32) is rotatably connected in the rotating groove (31), one end of the mounting main rotating rod (32) away from the cleaning rotating plate (33) is fixedly connected to a rotating gear (34), and the rotating gear (34) is meshingly connected to a rack (35); The telescopic cleaning device (4) comprises a plug-in rod (43) arranged in the mounting main rotating rod (32), one end of the plug-in rod (43) is fixedly connected to a telescopic cleaning rod (410), a swing cleaning device (5) is arranged in the telescopic cleaning rod (410), the swing cleaning device (5) comprises a movable groove (51) and a connecting groove (56) provided in the telescopic cleaning rod (410), and a pneumatic device (6) is arranged in the movable groove (51).

2. According to the air-cooled heat pump for a building heating system according to claim 1, the other end of the rotating screw (23) is installed at the output end of the motor (24), and the motor (24) is installed in the housing (11).

3. According to the air-cooled heat pump for a building heating system as described in claim 1, the rotating groove (31) is provided in the plug-in slider (22), and the rack (35) is fixedly connected in the partition (21).

4. The air-cooled heat pump for a building heating system according to claim 3, characterized in that: A track groove (41) is provided in the partition plate (21), a slider (42) is slidably connected in the track groove (41), one end of the slider (42) is fixedly connected to the plug rod (43), the plug rod (43) is slidably connected in the telescopic groove (44), and the telescopic groove (44) is provided in the main rotating rod (32) for installation.

5. The air-cooled heat pump for a building heating system according to claim 4, characterized in that: A limiting groove (45) is provided in the main rotating rod (32) for installation, a limiting plate (46) is slidably connected in the limiting groove (45), the limiting plate (46) is fixedly connected to the outer wall of the plug-in rod (43), a limiting spring (47) is installed on one side of the limiting plate (46), and the other end of the limiting spring (47) is fixedly connected in the limiting groove (45).

6. The air-cooled heat pump for a building heating system according to claim 5, characterized in that: A rotation groove (48) is provided in the limit plate (46), a rotation rod (49) is rotatably connected in the rotation groove (48), and the limit spring (47) is fixedly connected to one side of the rotation rod (49).

7. The air-cooled heat pump for a building heating system according to claim 1, characterized in that: A fixed rack (52) is provided in the movable groove (51), and the fixed rack (52) is inserted in the connecting groove (56). The other end of the fixed rack (52) is fixedly connected to one end of the mounting main rotating rod (32). The fixed rack (52) is meshingly connected with a gear (54), and the gear (54) is rotatably connected in a fixed shaft (53). The fixed shaft (53) is fixedly connected in the movable groove (51). A scraper (55) is fixedly connected to the side wall of the gear (54), and the scraper (55) extends out of the telescopic cleaning rod (410). The inner wall of the scraper (55) contacts the condenser tube (13).

8. The air-cooled heat pump for a building heating system according to claim 7, characterized in that: The pneumatic device (6) includes a piston cylinder (61) fixedly connected in the movable groove (51), a piston plate (62) slidably connected in the piston cylinder (61), the top of the piston plate (62) abuts against the fixed rack (52), one side of the piston plate (62) is fixedly connected to a piston spring (63), the other end of the piston spring (63) is installed in the piston cylinder (61), and an air outlet hole (64) is opened in the telescopic cleaning rod (410), and the air outlet hole (64) is connected to the piston cylinder (61).

9. The air-cooled heat pump for a building heating system according to claim 2, characterized in that: The frost blowing device (7) comprises a bellows (71) installed on one side of the plug-in slider (22), the other end of the bellows (71) is installed on the inner wall of the shell (11), the shell (11) is provided with a mounting groove (72), an air inlet hole (74), and an exhaust hole (75), an elastic air bag (73) is installed in the mounting groove (72), the elastic air bag (73) is connected with the air inlet hole (74) and the exhaust hole (75), the bellows (71) is connected with the elastic air bag (73) through the air inlet hole (74), and one side of the exhaust hole (75) is blocked by a blocking plate (76).

10. The air-cooled heat pump for a building heating system according to claim 9, characterized in that: The blocking plate (76) is slidably connected in a blocking slide groove (77), and the blocking slide groove (77) is provided in the shell (11). One side of the blocking plate (76) is designed as an inclined surface, and the inclined surface of the blocking plate (76) is resisted by a release rod (78), and the release rod (78) is provided in the shell (11). One side of the blocking plate (76) is fixedly connected with a release spring (79), and the other end of the release spring (79) is fixedly connected in the blocking slide groove (77).

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