CN112484343A

CN112484343A - Air source screw type heat pump unit with defrosting mechanism

Info

Publication number: CN112484343A
Application number: CN202011336153.5A
Authority: CN
Inventors: 陈瑜
Original assignee: Wenzhou Shoumei Machinery Technology Co ltd
Current assignee: Wenzhou Shoumei Machinery Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-03-12

Abstract

The invention belongs to the technical field of heat pump units, and particularly relates to an air source screw type heat pump unit with a defrosting mechanism. According to the invention, a set of perfect air source heat pump unit can be formed through the combined action of the condenser, the screw compressor, the gas-liquid separator, the evaporator, the expansion valve, the filtering component, the first conveying pipe, the second conveying pipe, the third conveying pipe, the fourth conveying pipe, the fifth conveying pipe and the sixth conveying pipe, so that a heating effect is achieved.

Description

Air source screw type heat pump unit with defrosting mechanism

Technical Field

The invention belongs to the technical field of heat pump units, and particularly relates to an air source screw type heat pump unit with a defrosting mechanism.

Background

The heat pump unit is a device which utilizes high-level energy to enable energy to flow from a low-level heat source to a high-level heat source, the heat pump unit can extract heat energy from a low-temperature heat source for heat supply, and is an energy-saving device, so that the heat pump is widely popularized and used at present, the air source heat pump can transfer heat in the air into water, and a hot water preparation function is realized.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides an air source screw type heat pump unit with a defrosting mechanism, which has the characteristics of defrosting function, convenience in disassembly and maintenance and better heat dissipation.

In order to achieve the purpose, the invention provides the following technical scheme: an air source screw type heat pump unit with a defrosting mechanism comprises a box body, wherein one side of the box body is fixedly connected with a water storage tank, the top of the water storage tank is fixedly connected with an insulation box, one sides of the water storage tank and the insulation box are fixedly connected with a condenser, a circulating pipeline is arranged in the condenser, the bottom of the inner wall of the water storage tank is fixedly connected with a second water pump, the top of the second water pump is communicated with a first connecting pipe, one end of the first connecting pipe penetrates through the water storage tank to be communicated with one end of the circulating pipeline, the other end of the circulating pipeline is communicated with a second connecting pipe, one end of the second connecting pipe penetrates through the insulation box to be communicated with the inner wall of the insulation box, the top of the inner wall of the box body is provided with a groove, the inner top of the groove is provided with a plurality of heat dissipation holes, the heat dissipation, sliding plates are connected in the two first sliding grooves in a sliding mode.

The two sides of the bottom of the groove are fixedly connected with the same concave frame, the top of one side of the inner wall of the concave frame is fixedly connected with a first motor, the top of the other side of the inner wall of the concave frame is fixedly connected with a bearing, a rotating shaft is movably arranged in the bearing in a penetrating way, one end of the rotating shaft is fixedly connected with a bidirectional threaded rod, the other end of the bidirectional threaded rod is fixedly connected with an output shaft of the first motor, the two-way threaded rod is in threaded connection with two threaded caps, the tops and the bottoms of the two threaded caps are fixedly connected with connecting blocks, the two connecting blocks form a group, the tops of the connecting blocks in the group are respectively and fixedly connected with the bottoms of the two sliding plates, the inner wall of the concave frame is fixedly connected with a fixed plate, the top of the fixed plate is provided with a second sliding chute, and two sliding blocks are connected in the second sliding groove in a sliding manner, and the bottom of the other connecting block is fixedly connected to the tops of the two sliding blocks respectively.

The inner wall bottom of the concave frame is fixedly connected with a screw compressor and a gas-liquid separator, the screw compressor is communicated with a first conveying pipe and a second conveying pipe, one end of the first conveying pipe penetrates through the concave frame to be communicated with a condenser, one end of the second conveying pipe is communicated with the top of the gas-liquid separator, the other side of the bottom of the inner wall of the box body is provided with an evaporator, one side of the box body is provided with a through hole, an air inlet assembly is fixedly connected in the through hole, one side of the gas-liquid separator is communicated with a third conveying pipe, one end of the third conveying pipe penetrates through the concave frame to be communicated with the evaporator, the bottom of the inner wall of the box body is fixedly connected with a liquid storage tank and a filtering assembly, one side of the liquid storage tank is communicated with a sixth conveying pipe, one end of the sixth conveying pipe is communicated, the top intercommunication of third water pump has the fifth conveyer pipe, the liquid reserve tank and the filter assembly intercommunication are passed to the one end of fifth conveyer pipe, one side intercommunication of filter assembly has the fourth conveyer pipe, the one end and the evaporimeter intercommunication of fourth conveyer pipe, be provided with the expansion valve on the fourth conveyer pipe.

Preferably, a controller is arranged on one side of the front face of the box body, a temperature sensor is arranged on the other side of the box body, and both sides of the concave frame are hollowed out.

Preferably, one side of the front surface of the box body is movably connected with a box door through a hinge, a display is arranged on the box door, and a handle is fixedly connected to the box door.

Preferably, the bottom fixedly connected with universal wheel of box, the quantity of universal wheel has four, and four the even distribution of universal wheel is in the bottom four corners of box.

Preferably, the water storage tank and the heat insulation box are both internally provided with floating type liquid level meters.

Preferably, one side of the water storage tank is communicated with a water inlet pipe, one end of the water inlet pipe penetrates through the tank body and is communicated with the outside, the bottom of the inner wall of the heat insulation tank is fixedly connected with a first water pump, the top of the first water pump is communicated with a water outlet pipe, and one end of the water outlet pipe penetrates through the tank body and is communicated with the outside.

Preferably, the air inlet assembly comprises a frame body, a cross rod is fixedly connected to the inner wall of the frame body, a second motor is fixedly connected to one side of the cross position of the cross rod, a plurality of fan blades are fixedly connected to an output shaft of the second motor, a dust screen is fixedly connected to the inner wall of the frame body, a grid net is fixedly connected to one side of the dust screen, and the frame body is fixedly connected to the through hole.

Preferably, the filtering component comprises a filtering box, a box cover is lapped at the top of the filtering box, the two sides of the box cover are buckled on the filtering box through lock catches, a sealing ring is fixedly connected to the bottom of the box cover, the outer side of the sealing ring is lapped with the inner wall of the filtering box, a filtering net and a filtering core plate are fixedly connected to the bottom of the box cover, a fifth conveying pipe is communicated with one side of the filtering box, and a fourth conveying pipe is communicated with the other side of the filtering box.

Preferably, the inlet has been seted up to the top intermediate position of liquid reserve tank, threaded connection has the feed liquor lid on the inlet, the outside of inlet is provided with the external screw thread, be provided with the internal thread on the inner wall of feed liquor lid, the external screw thread of inlet and the internal thread threaded connection of feed liquor lid.

Preferably, the controller is electrically connected with the screw compressor through a wire display, the first water pump, the floating liquid level meter, the condenser, the second water pump, the first motor, the gas-liquid separator, the evaporator, the second motor, the expansion valve, the third water pump, the temperature sensor and the screw compressor.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, a set of complete air source heat pump unit can be formed through the combined action of the condenser, the screw compressor, the gas-liquid separator, the evaporator, the expansion valve, the filtering component, the first conveying pipe, the second conveying pipe, the third conveying pipe, the fourth conveying pipe, the fifth conveying pipe and the sixth conveying pipe, so that the heating effect is achieved, and the box door can be conveniently unfolded through the arrangement of the box body and the box door, so that the components in the box body can be detected and maintained.

2. According to the invention, through the combined action of the groove, the heat dissipation holes, the first sliding chute, the sliding plate, the first motor, the bearing, the rotating shaft, the bidirectional threaded rod, the threaded cap, the connecting block, the fixing plate, the second sliding chute and the sliding block, the box body can be subjected to heat dissipation, and the defrosting function can also be realized.

3. According to the invention, through the combined action of the frame body, the cross rod, the second motor, the fan blades, the grid net and the dustproof net, the heat absorption capacity of the evaporator in air can be enhanced, and impurities can be prevented from entering the box body, so that the heat absorption process of the evaporator is influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural diagram of a front view cross section of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is an enlarged schematic view of FIG. 2 at A in accordance with the present invention;

FIG. 5 is a schematic view of the filter assembly of FIG. 2 according to the present invention;

FIG. 6 is a schematic view of the air intake assembly of FIG. 2 according to the present invention;

in the figure: 1. a box body; 2. a universal wheel; 3. a box door; 4. a display; 5. a handle; 6. a controller; 7. a water storage tank; 8. a heat preservation box; 9. a water inlet pipe; 10. a first water pump; 11. a water outlet pipe; 12. a float-type level gauge; 13. a condenser; 14. a circulation pipe; 15. a second water pump; 16. a first connecting pipe; 17. a second connecting pipe; 18. a concave frame; 19. a groove; 20. heat dissipation holes; 21. a first chute; 22. a sliding plate; 23. a first motor; 24. a bearing; 25. a rotating shaft; 26. a bidirectional threaded rod; 27. a threaded cap; 28. connecting blocks; 29. a fixing plate; 30. a second chute; 31. a slider; 32. a first delivery pipe; 33. a second delivery pipe; 34. a gas-liquid separator; 35. a third delivery pipe; 36. an evaporator; 37. a through hole; 38. an air intake assembly; 381. a frame body; 382. a cross bar; 383. a second motor; 384. a fan blade; 385. a grid mesh; 386. a dust screen; 39. a fourth delivery pipe; 40. an expansion valve; 41. a filter assembly; 411. a filter box; 412. a box cover; 413. locking; 414. a seal ring; 415. a filter screen; 416. a filter element plate; 42. a fifth delivery pipe; 43. a liquid storage tank; 44. a sixth delivery pipe; 45. a third water pump; 46. a liquid inlet; 47. a liquid inlet cover; 48. a temperature sensor; 49. a screw compressor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-6, the present invention provides the following technical solutions: an air source screw type heat pump unit with a defrosting mechanism comprises a box body 1, one side of the box body 1 is fixedly connected with a water storage tank 7, the top of the water storage tank 7 is fixedly connected with an insulation can 8, one sides of the water storage tank 7 and the insulation can 8 are fixedly connected with a condenser 13, a circulating pipeline 14 is arranged in the condenser 13, the bottom of the inner wall of the water storage tank 7 is fixedly connected with a second water pump 15, the top of the second water pump 15 is communicated with a first connecting pipe 16, one end of the first connecting pipe 16 penetrates through the water storage tank 7 to be communicated with one end of the circulating pipeline 14, the other end of the circulating pipeline 14 is communicated with a second connecting pipe 17, one end of the second connecting pipe 17 penetrates through the insulation can 8 to be communicated with the inner wall of the insulation can 8, the top of the inner wall of the box body 1 is provided with a groove 19, the, first chutes 21 are formed in two sides of the inner wall of the groove 19, and sliding plates 22 are slidably connected in the two first chutes 21.

The two sides of the bottom of the groove 19 are fixedly connected with the same concave frame 18, the top of one side of the inner wall of the concave frame 18 is fixedly connected with a first motor 23, the top of the other side of the inner wall of the concave frame 18 is fixedly connected with a bearing 24, a rotating shaft 25 is movably arranged in the bearing 24 in a penetrating way, one end of the rotating shaft 25 is fixedly connected with a bidirectional threaded rod 26, the other end of the bidirectional threaded rod 26 is fixedly connected with an output shaft of the first motor 23, two threaded caps 27 are connected on the bidirectional threaded rod 26 in a threaded way, the tops and the bottoms of the two threaded caps 27 are both fixedly connected with connecting blocks 28, the two connecting blocks 28 are in a group, the tops of one group of connecting blocks 28 are respectively fixedly connected with the bottoms of the two sliding plates 22, a fixing plate 29 is fixedly connected on the inner wall of the concave frame 18, the top of the fixing plate 29 is provided with, through the combined action of the groove 19, the heat dissipation hole 20, the first sliding groove 21, the sliding plate 22, the first motor 23, the bearing 24, the rotating shaft 25, the bidirectional threaded rod 26, the threaded cap 27, the connecting block 28, the fixing plate 29, the second sliding groove 30 and the sliding block 31, the heat dissipation of the box body 1 can be realized, and the defrosting function can also be realized.

The bottom of the inner wall of the concave frame 18 is fixedly connected with a screw compressor 49 and a gas-liquid separator 34, the screw compressor 49 is communicated with a first conveying pipe 32 and a second conveying pipe 33, one end of the first conveying pipe 32 passes through the concave frame 18 to be communicated with a condenser 13, one end of the second conveying pipe 33 is communicated with the top of the gas-liquid separator 34, the other side of the bottom of the inner wall of the box body 1 is provided with an evaporator 36, one side of the box body 1 is provided with a through hole 37, an air inlet component 38 is fixedly connected in the through hole 37, one side of the gas-liquid separator 34 is communicated with a third conveying pipe 35, one end of the third conveying pipe 35 passes through the concave frame 18 to be communicated with the evaporator 36, the bottom of the inner wall of the box body 1 is fixedly connected with a liquid storage tank 43 and a filter component 41, one side of the liquid storage tank 43 is communicated with a sixth conveying pipe, the top of the third water pump 45 is communicated with a fifth conveying pipe 42, one end of the fifth conveying pipe 42 penetrates through the liquid storage tank 43 and is communicated with the filtering component 41, one side of the filtering component 41 is communicated with a fourth conveying pipe 39, one end of the fourth conveying pipe 39 is communicated with the evaporator 36, the fourth conveying pipe 39 is provided with an expansion valve 40, and through the combined action of the condenser 13, the screw compressor 49, the gas-liquid separator 34, the evaporator 36, the expansion valve 40, the filtering component 41, the first conveying pipe 32, the second conveying pipe 33, the third conveying pipe 35, the fourth conveying pipe 39, the fifth conveying pipe 42 and the sixth conveying pipe 44, a complete set of air source heat pump unit can be formed, so that the heating effect is achieved.

Specifically, as shown in fig. 1 and 2: the front one side of box 1 is provided with controller 6, controller 6 can play the conventional known equipment of control for the computer and so on, the opposite side of box 1 is provided with temperature sensor 48, setting through temperature sensor 48, can detect external and box 1's temperature, the both sides of concave frame 18 are the fretwork setting, there is chamber door 3 positive one side of box 1 through hinge swing joint, setting through box 1 and chamber door 3, can be convenient expand chamber door 3, thereby detect and maintain the inside part of box 1, be provided with display 4 on chamber door 3, fixedly connected with handle 5 on chamber door 3.

Specifically, as shown in fig. 1 and 2: the bottom fixedly connected with universal wheel 2 of box 1, the quantity of universal wheel 2 has four, and the even distribution of four universal wheels 2 is in the bottom four corners of box 1, setting through universal wheel 2, can be convenient remove the device, all be provided with cursory formula level gauge 12 in water storage box 7 and the insulation can 8, setting through cursory formula level gauge 12 and display 4, can show the water level height in water storage box 7 and the insulation can 8, but one side intercommunication of water storage box 7 has inlet tube 9, box 1 and external intercommunication are passed to the one end of inlet tube 9, insulation can 8's the first water pump 10 of inner wall bottom fixedly connected with, the top intercommunication of first water pump 10 has outlet pipe 11, the one end of outlet pipe 11 is passed box 1 and external intercommunication.

Specifically, as shown in fig. 2 and 6: the air intake assembly 38 comprises a frame body 381, a cross rod 382 is fixedly connected to the inner wall of the frame body 381, a second motor 383 is fixedly connected to one side of the cross position of the cross rod 382, a plurality of fan blades 384 are fixedly connected to an output shaft of the second motor 383, a dustproof net 386 is fixedly connected to the inner wall of the frame body 381, a grid net 385 is fixedly connected to one side of the dustproof net 386, the frame body 381 is fixedly connected to the through hole 37, the frame body 381, the cross rod 382, the second motor 383, the fan blades 384, the grid net 385 and the dustproof net 386 jointly act, the heat absorption capacity of the evaporator 36 in the air can be enhanced, impurities can be prevented from entering the box body 1, and the heat absorption process of the evaporator 36 is influenced.

Specifically, as shown in fig. 2 and 5: filter assembly 41 includes filter tank 411, the top overlap joint of filter tank 411 has case lid 412, the both sides of case lid 412 all are through hasp 413 lock joint on filter tank 411, the bottom fixedly connected with sealing washer 414 of case lid 412, the outside of sealing washer 414 and the inner wall overlap joint of filter tank 411, the bottom fixedly connected with filter screen 415 and the filter core board 416 of case lid 412, one side intercommunication of filter tank 411 has fifth conveyer pipe 42, the opposite side intercommunication of filter tank 411 has fourth conveyer pipe 39, through filter tank 411, case lid 412, sealing washer 414, the combined action of filter screen 415 and filter core board 416, can filter the working medium that flows, prevent that working medium from carrying to the heat pump set in, produce the harm to its unit.

Specifically, as shown in fig. 1, 2, 3, and 6: liquid inlet 46 has been seted up to the top intermediate position of liquid reserve tank 43, threaded connection has feed liquor lid 47 on liquid inlet 46, through the setting of feed liquor 46 and feed liquor lid 47, can add when the working medium in liquid reserve tank 43 reduces, the outside of feed liquor 46 is provided with the external screw thread, be provided with the internal thread on the inner wall of feed liquor lid 47, the external screw thread of feed liquor 46 and the internal thread threaded connection of feed liquor lid 47, controller 6 passes through wire difference display 4, first water pump 10, cursory formula level gauge 12, condenser 13, second water pump 15, first motor 23, vapour and liquid separator 34, evaporimeter 36, second motor 383, expansion valve 40, third water pump 45, temperature sensor 48 and screw compressor 49 electric connection.

The working principle and the using process of the invention are as follows: when the invention is used, a power supply is connected with a device, then an external water pipe is communicated with a water inlet pipe 9, a water outlet pipe 11 is communicated with a household water pipe, then a handle 5 is pulled, a box door 3 is unfolded, a liquid inlet cover 47 is screwed, the liquid inlet cover 47 is separated from a liquid inlet 46, then working media (the working media are media substances for realizing mutual conversion of heat energy and mechanical energy, such as Freon and the like) are added into a liquid storage box 43 through the liquid inlet 46, after the addition is finished, the liquid inlet cover 47 is screwed back to the liquid inlet 46, then a controller 6 controls a floating liquid level meter 12 and a display 4 to start working, then a water valve on the external water pipe is opened, water is fed into a water storage box 7 through the water inlet pipe 9, the floating liquid level meter 12 in the water storage box 7 always measures the height of the water level, when the height of the water level measured by the floating liquid level meter 12 reaches the maximum value of the height of the water level in the water, the valve on the external water valve can be closed, water inflow is stopped, then the controller 6 controls the first motor 23 to work, the output shaft of the first motor 23 drives the bidirectional threaded rod 26 to rotate, the bidirectional threaded rod 26 drives the rotating shaft 25 to rotate in the bearing 24, the bidirectional threaded rod 26 rotates, so that the two threaded caps 27 move on the bidirectional threaded rod 26 in the direction away from each other, the two threaded caps 27 drive the four connecting blocks 28 to move, the two connecting blocks 28 drive the two sliding blocks 31 to slide in the second sliding grooves 30, the other two connecting blocks 28 drive the sliding plate 22 to slide in the first sliding grooves 21, the sliding plate 22 slides in the first sliding grooves 21, the heat dissipation holes 20 are unfolded, and after the unfolding is completed, the first motor 23 stops working through the controller 6;

then the controller 6 controls the second water pump 15, the third water pump 45, the expansion valve 40, the evaporator 36, the second motor 383, the gas-liquid separator 34, the screw compressor 49 and the condenser 13 to start working, the third water pump 45 pumps the working medium in the liquid storage tank 43, the working medium enters the filter tank 411 through the fifth conveying pipe 42 and enters the fourth conveying pipe 39 through the filter screen 415 and the filter element plate 416 in the filter tank 411, the flow rate of the working medium in the working medium is controlled through the expansion valve 40 when the working medium passes through the fourth conveying pipe 39, the uneven flow of the working medium is prevented, incomplete heat absorption is realized in the evaporator 36, when the working medium enters the evaporator 36, the second motor 383 drives the fan blade 384 to rotate, so that the outside air is pumped into the box body 1, the air pumped in the air is blown to the surface of the evaporator 36, the heat absorption capacity of the evaporator 36 in the air is enhanced, and when the working medium passes through the evaporator 36, absorbing heat from air, converting the heat into gas, then entering a gas-liquid separator 34 through a third conveying pipe 35, separating the working medium converted into gas by the gas-liquid separator 34, preventing the gas working medium from containing trace liquid, enabling the liquid to enter a screw compressor 49, shortening the service life of the screw compressor 49, after the separation is completed, enabling the gas working medium to enter the screw compressor 49 through a second conveying pipe 33, compressing the gas working medium into high-temperature high-pressure gas by the screw compressor 49, enabling the compressed gas working medium to enter a condenser 13 through a first conveying pipe 32, enabling a water flow pumped by a second water pump 15 to enter a circulating pipeline 14 through a first connecting pipe 16, enabling the gas working medium to flow in the circulating pipeline 14, releasing heat by the gas working medium in a high-temperature high-pressure state, and enabling cold water to be converted into hot water and enter an insulation box 8 through a second connecting pipe 17 in the heat releasing process, a certain amount of heat is scattered in the box body 1 and discharged to the outside through the heat radiation holes 20, the gas working medium is converted into a liquid working medium and enters the liquid storage tank 43 through the sixth delivery pipe 44, circulation is carried out, and therefore cold water in the circulating pipeline 14 is heated continuously, the change of the water level in the heat preservation box 8 is observed through the display 4, and when the water level reaches the maximum value, the work of each part can be stopped through the controller 6;

through predetermineeing controller 6, when temperature sensor 48 detected that ambient temperature is in zero degree centigrade (ambient temperature generally is in below zero degree centigrade, will frost), each part operates in advance, in the operation, the excessive heat that looses of condenser 13 gathers in box 1, thereby improve the inside temperature of box 1, and the temperature of box 1 then overflows to the external world through box 1, thereby reach the effect of defrosting, after the temperature in box 1 reaches certain temperature, the work of first motor 23 of secondary control, thereby launch louvre 20, dispel the heat, can carry out the reutilization to a certain extent to the excessive heat of condenser 13 like this, thereby reduce thermal scattering and disappearing.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an air source screw heat pump set with mechanism defrosts, includes box (1), its characterized in that: a water storage tank (7) is fixedly connected to one side of the box body (1), an insulation box (8) is fixedly connected to the top of the water storage tank (7), a condenser (13) is fixedly connected to one sides of the water storage tank (7) and the insulation box (8), a circulating pipeline (14) is arranged in the condenser (13), a second water pump (15) is fixedly connected to the bottom of the inner wall of the water storage tank (7), a first connecting pipe (16) is communicated with the top of the second water pump (15), one end of the first connecting pipe (16) penetrates through the water storage tank (7) to be communicated with one end of the circulating pipeline (14), the other end of the circulating pipeline (14) is communicated with a second connecting pipe (17), one end of the second connecting pipe (17) penetrates through the insulation box (8) to be communicated with the inner wall of the insulation box (8), a groove (19) is formed in the top of, a plurality of heat dissipation holes (20) are formed in the inner top of the groove (19), the heat dissipation holes (20) are uniformly distributed on the top of the inner wall of the groove (19), first sliding grooves (21) are formed in two sides of the inner wall of the groove (19), and sliding plates (22) are connected in the two first sliding grooves (21) in a sliding mode;

the two sides of the bottom of the groove (19) are fixedly connected with the same concave frame (18), the top of one side of the inner wall of the concave frame (18) is fixedly connected with a first motor (23), the top of the other side of the inner wall of the concave frame (18) is fixedly connected with a bearing (24), a rotating shaft (25) is movably arranged in the bearing (24) in a penetrating manner, one end of the rotating shaft (25) is fixedly connected with a two-way threaded rod (26), the other end of the two-way threaded rod (26) is fixedly connected with an output shaft of the first motor (23), the two-way threaded rod (26) is in threaded connection with two threaded caps (27), the tops and the bottoms of the two threaded caps (27) are fixedly connected with connecting blocks (28), the two connecting blocks (28) form a group, the tops of the group of connecting blocks (28) are respectively and fixedly connected to the bottoms of the two sliding plates (22), and the inner wall, a second sliding groove (30) is formed in the top of the fixing plate (29), two sliding blocks (31) are connected in the second sliding groove (30) in a sliding mode, and the bottoms of the other group of connecting blocks (28) are fixedly connected to the tops of the two sliding blocks (31) respectively;

inner wall bottom fixedly connected with screw compressor (49) and vapour and liquid separator (34) of concave frame (18), the intercommunication has first conveyer pipe (32) and second conveyer pipe (33) on screw compressor (49), concave frame (18) and condenser (13) intercommunication are passed to the one end of first conveyer pipe (32), the one end of second conveyer pipe (33) and the top intercommunication of vapour and liquid separator (34), the inner wall bottom opposite side of box (1) is provided with evaporimeter (36), through-hole (37) have been seted up to one side of box (1), fixedly connected with air inlet subassembly (38) in through-hole (37), one side intercommunication of vapour and liquid separator (34) has third conveyer pipe (35), concave frame (18) and evaporimeter (36) intercommunication are passed to the one end of third conveyer pipe (35), the inner wall bottom fixedly connected with liquid reserve tank (43) and filtering component (41) of box (1), one side intercommunication of liquid reserve tank (43) has sixth conveyer pipe (44), the one end and condenser (13) intercommunication of sixth conveyer pipe (44), inner wall bottom fixedly connected with third water pump (45) of liquid reserve tank (43), the top intercommunication of third water pump (45) has fifth conveyer pipe (42), liquid reserve tank (43) and filter assembly (41) intercommunication are passed to the one end of fifth conveyer pipe (42), one side intercommunication of filter assembly (41) has fourth conveyer pipe (39), the one end and the evaporimeter (36) intercommunication of fourth conveyer pipe (39), be provided with expansion valve (40) on fourth conveyer pipe (39).

2. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: the temperature control box is characterized in that a controller (6) is arranged on one side of the front face of the box body (1), a temperature sensor (48) is arranged on the other side of the box body (1), and both sides of the concave frame (18) are hollowed out.

3. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: the refrigerator is characterized in that a refrigerator door (3) is movably connected to one side of the front face of the refrigerator body (1) through a hinge, a display (4) is arranged on the refrigerator door (3), and a handle (5) is fixedly connected to the refrigerator door (3).

4. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: the bottom fixedly connected with universal wheel (2) of box (1), the quantity of universal wheel (2) has four, and four the even distribution in the bottom four corners of box (1) of universal wheel (2).

5. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: and floating liquid level meters (12) are arranged in the water storage tank (7) and the heat insulation box (8).

6. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: one side of the water storage tank (7) is communicated with a water inlet pipe (9), one end of the water inlet pipe (9) penetrates through the tank body (1) to be communicated with the outside, a first water pump (10) is fixedly connected to the bottom of the inner wall of the heat insulation box (8), the top of the first water pump (10) is communicated with a water outlet pipe (11), and one end of the water outlet pipe (11) penetrates through the tank body (1) to be communicated with the outside.

7. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: the air inlet assembly (38) comprises a frame body (381), a cross rod (382) is fixedly connected to the inner wall of the frame body (381), a second motor (383) is fixedly connected to one side of the cross position of the cross rod (382), a plurality of fan blades (384) are fixedly connected to an output shaft of the second motor (383), a dustproof net (386) is fixedly connected to the inner wall of the frame body (381), a grid net (385) is fixedly connected to one side of the dustproof net (386), and the frame body (381) is fixedly connected to the through hole (37).

8. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: filter component (41) includes rose box (411), the top overlap joint of rose box (411) has case lid (412), the both sides of case lid (412) are all through hasp (413) lock joint on rose box (411), the bottom fixedly connected with sealing washer (414) of case lid (412), the outside of sealing washer (414) and the inner wall overlap joint of rose box (411), the bottom fixedly connected with filter screen (415) and the filter core board (416) of case lid (412), one side intercommunication of rose box (411) has fifth conveyer pipe (42), the opposite side intercommunication of rose box (411) has fourth conveyer pipe (39).

9. The air source screw heat pump unit with the defrosting mechanism of claim 1, which is characterized in that: inlet (46) have been seted up to the top intermediate position of liquid reserve tank (43), threaded connection has feed liquor lid (47) on inlet (46), the outside of inlet (46) is provided with the external screw thread, be provided with the internal thread on the inner wall of feed liquor lid (47), the external screw thread of inlet (46) and the internal thread threaded connection of feed liquor lid (47).

10. The air source screw heat pump unit with the defrosting mechanism of claim 2, wherein: the controller (6) is electrically connected with the display (4), the first water pump (10), the floating liquid level meter (12), the condenser (13), the second water pump (15), the first motor (23), the gas-liquid separator (34), the evaporator (36), the second motor (383), the expansion valve (40), the third water pump (45), the temperature sensor (48) and the screw compressor (49) through leads.