A defrosting control method of an air source heat pump and an air source heat pump

Abstract

This invention relates to the field of air source heat pump technology, specifically to a defrosting control method and an air source heat pump, including an evaporator, a condenser, a compressor, an expansion valve, and a defrosting assembly. The evaporator is connected to the compressor, the compressor is connected to the condenser, the condenser is connected to the expansion valve, and the expansion valve is connected to the evaporator. The defrosting assembly includes multiple rubber defrosting rods and multiple rubber defrosting protrusions. When frost is detected on the evaporator, the rubber defrosting rods move to one side of the evaporator and move repeatedly, while simultaneously working with the rubber defrosting protrusions to scrape and clean the frost on the evaporator. Thus, when frost forms on the evaporator, there is no need for reverse circulation, the indoor fan will not stop running, avoiding a decrease in the system's heating performance. The system can operate while simultaneously cleaning the frost, without affecting the user's indoor usage, greatly improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air source heat pump technology, and more particularly to a defrosting control method for an air source heat pump and an air source heat pump. Background Technology

[0002] An air source heat pump is a device that uses high-grade energy to transfer heat from a low-grade heat source to a high-grade heat source. It has the advantages of energy saving and environmental protection. The liquid refrigerant first completes the process of heating and pressurizing from its gaseous state, and then enters a high-efficiency evaporator, where it releases heat energy and transfers it to the water. At the same time, the refrigerant is cooled and becomes liquid. After that, it enters the evaporator after being reduced in pressure by a throttling element. The liquid refrigerant absorbs heat energy from the air and solar radiation energy, and after being compressed by the compressor, it exchanges heat with the water to achieve the heating effect. In order to absorb heat from the surrounding air, and at the same time facilitate heat dissipation and save space, the evaporator is usually installed outdoors. However, in winter, when the air source heat pump is running, when the surface temperature of the outdoor evaporator is below zero degrees and below the outdoor air dew point temperature, frost will form on the surface of the evaporator. When the frost layer reaches a certain thickness, it will lead to a decrease in outdoor heat exchange efficiency and a deterioration in the heat exchange performance of the unit.

[0003] In existing technologies, a four-way valve is typically used to change the flow direction of the refrigerant, causing it to flow in reverse, thereby reversing the functions of the condenser and evaporator in the heat pump system. When defrosting is required, the four-way valve will switch directions, allowing the high-temperature, high-pressure refrigerant discharged from the compressor to first enter the evaporator (which then acts as the condenser), using the heat of the refrigerant to melt the frost layer on the evaporator fins.

[0004] In the aforementioned prior art, although the four-way valve can complete defrosting through reverse circulation, the indoor unit's fan usually stops running during defrosting because the condenser and evaporator switch roles, which leads to a significant decrease in the system's heating performance and a long defrosting process, thus greatly affecting the user experience. Summary of the Invention

[0005] The purpose of this invention is to provide a defrosting control method for an air source heat pump and an air source heat pump, which solves the problem that although the four-way valve in the prior art can complete defrosting through reverse circulation, the indoor unit fan usually stops running during defrosting because the condenser and evaporator are reversed, which leads to a significant decrease in the heating performance of the system and a long defrosting process, thus greatly affecting the user experience.

[0006] To achieve the above objectives, the present invention provides an air source heat pump, comprising an evaporator, a condenser, a compressor, an expansion valve, and a defrosting assembly, wherein the evaporator is connected to the compressor, the compressor is connected to the condenser, the condenser is connected to the expansion valve, and the expansion valve is connected to the evaporator;

[0007] The defrosting assembly includes multiple rubber defrosting rods and multiple rubber defrosting protrusions. The multiple rubber defrosting rods are sequentially arranged on one side of the evaporator, and the multiple rubber defrosting protrusions are respectively fixedly connected to the corresponding rubber defrosting rods and are sequentially distributed on the outside of the rubber defrosting rods.

[0008] The evaporator includes an evaporator body and multiple heat sinks, with the multiple heat sinks sequentially arranged on the evaporation tubes of the evaporator body.

[0009] The defrosting assembly further includes a movable adjustment unit, which is disposed on the evaporator body;

[0010] The movable adjustment unit includes two longitudinal electric slide rails, two longitudinal sliders, a transverse electric slide rail, and a transverse slider. The two longitudinal electric slide rails are symmetrically arranged on one side of the evaporator body. The two longitudinal sliders are slidably connected to the corresponding longitudinal electric slide rails. The transverse electric slide rail is arranged between the two longitudinal sliders, and the transverse slider is slidably connected to the transverse electric slide rail.

[0011] The defrosting assembly further includes a defrosting switching unit, which comprises a camera, a temperature sensor, a supporting shell, a switching shell, two switching mechanisms, a rubber plate, a support plate, multiple first heating wires, multiple second heating wires, a sponge plate, multiple sponge strips, and multiple microfiber strips. The supporting shell is located below the horizontal slider, and the switching shell is connected to one end of the supporting shell. The camera and the temperature sensor are sequentially located at the other end of the supporting shell. The two switching mechanisms are symmetrically arranged on both sides of the switching shell. The support plate is mounted on the two switching mechanisms and located inside the switching shell. The rubber plate is detachably connected to one side of the support plate. Multiple rubber defrosting rods are sequentially mounted on the rubber plate. The sponge plate is detachably connected to the other side of the support plate. Multiple sponge strips are sequentially mounted on the sponge plate, and multiple microfiber strips are sequentially mounted on corresponding sponge strips. Multiple first heating wires are sequentially mounted inside the support plate, and multiple second heating wires are sequentially mounted on the inner wall of the switching shell.

[0012] The switching mechanism includes a self-locking motor, a rotating shaft, a switching electric slide rail, and a switching slider. Both the supporting housing and the switching housing have sliding grooves. The rotating shaft is adapted to the sliding grooves. One end of the rotating shaft is fixedly connected to the supporting plate, and the other end of the rotating shaft passes through the sliding groove and is fixedly connected to the output end of the self-locking motor. The switching electric slide rail is located on one side of the supporting housing and the switching housing. The switching slider is slidably connected to the switching electric slide rail, and the self-locking motor is fixedly connected to the switching slider.

[0013] The defrosting assembly further includes two adsorption units, which are symmetrically arranged above and below the supporting shell.

[0014] The adsorption unit includes an adsorption shell and a first fan. The adsorption shell is disposed on the supporting shell, the first fan is disposed inside the adsorption shell, and the horizontal slider is fixedly connected to the adsorption shell.

[0015] The defrosting assembly further includes two heating units, which are symmetrically arranged on both sides of the supporting housing.

[0016] The heating unit includes a heating shell, a plurality of third heating wires, and a second fan. The heating shell is fixedly connected to the supporting shell and is located on one side of the supporting shell. The plurality of third heating wires are sequentially arranged inside the heating shell, and the second fan is arranged inside the heating shell and is located on one side of the third heating wires.

[0017] The present invention also provides a defrosting control method for an air source heat pump, which uses the air source heat pump described above and includes the following steps:

[0018] The longitudinal and transverse electric slide rails are activated to move the supporting housing to the vicinity of the heat sink.

[0019] The temperature sensor detects the temperature of the heat sink. When the temperature is lower than the preset value, there is a risk of frost formation. At this time, the camera is turned on to take a picture of the heat sink to confirm.

[0020] Once frost is confirmed, the electric sliding rail is activated, causing the support plate to move within the support housing.

[0021] Multiple rubber defrosting slide bars are inserted between multiple heat sinks and move in all directions under the action of the longitudinal electric slide rail and the transverse electric slide rail to scrape off the frost. At the same time, the rubber defrosting protrusions are used to improve the defrosting effect.

[0022] After defrosting is completed, the support plate moves into the switching housing. At this time, the self-locking motor starts and drives the support plate to rotate, so that the positions of the sponge strip and the rubber defrosting rod are swapped.

[0023] The sponge strip and the multiple microfiber strips are inserted between the multiple heat sinks to absorb residual moisture on the heat sinks and prevent secondary frost formation.

[0024] At the same time, when the camera captures dew on the heat sink but it has not yet frost, the above operation can be used to absorb the water and prevent frost from forming.

[0025] The multiple heat sinks are defrosted sequentially by moving omnidirectionally along the longitudinal and transverse electric slide rails.

[0026] This invention discloses a defrosting control method for an air-source heat pump and the air-source heat pump itself. Air enters the evaporator, where the refrigerant exchanges heat with the surrounding air. Due to the low pressure within the evaporator, the refrigerant absorbs heat from the air and evaporates into a gaseous state, simultaneously absorbing a large amount of heat. The compressor draws in the gaseous refrigerant and compresses it, increasing its pressure and temperature, thus changing the refrigerant from a low-pressure gaseous state to a high-pressure gaseous state. At this point, the high-pressure gaseous refrigerant enters the condenser from the compressor, where it exchanges heat with a cooling medium. Due to the high pressure within the condenser, the refrigerant releases heat and condenses into a liquid state. The high-pressure liquid refrigerant then enters the expansion valve through a pipe from the condenser. The expansion valve throttles and reduces the pressure and temperature of the refrigerant. The refrigerant, after throttling and pressure reduction, re-enters the evaporator, and the cycle repeats.

[0027] When frost is detected on the evaporator, the rubber defrost rod moves to one side of the evaporator and moves repeatedly. At the same time, it works with the rubber defrost protrusion to scrape off and clean the frost on the evaporator. Thus, when frost appears on the evaporator, there is no need to reverse the circulation, and the indoor fan will not stop running, avoiding a decrease in the heating performance of the system. The system can operate and clean the frost at the same time without affecting the user's indoor use, greatly improving the user experience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a cross-sectional view of the entire invention.

[0031] Figure 3 This is the invention Figure 2 A sectional view along line AA.

[0032] Figure 4 This is a schematic diagram of the structure of the support shell of the present invention.

[0033] Figure 5 This is a front view of the support housing of the present invention.

[0034] Figure 6 This is the invention Figure 2 BB line section view.

[0035] Figure 7 This is a schematic diagram of the air source heat pump of the present invention.

[0036] Figure 8 This is a flowchart of the defrosting control method for the air source heat pump of the present invention.

[0037] 1-Evaporator, 2-Condenser, 3-Compressor, 4-Expansion Valve, 5-Rubber Defrosting Rod, 6-Rubber Defrosting Protrusion, 7-Evaporator Body, 8-Heat Discharge Fin, 9-Vertical Electric Slide Rail, 10-Vertical Slider, 11-Horizontal Electric Slide Rail, 12-Horizontal Slider, 13-Camera, 14-Temperature Sensor, 15-Support Housing, 16-Switching Housing, 17-Switching Mechanism, 18-Rubber Plate, 19-Support Plate, 20-First Heating Wire, 21-Second Heating Wire, 22-Sponge Plate, 23-Sponge Strip, 24-Microfiber Strip, 25-Self-Locking Motor, 26-Rotating Shaft, 27-Switching Electric Slide Rail, 28-Switching Slider, 29-Slide Groove, 30-Adsorption Housing, 31-First Fan, 32-Heating Housing, 33-Third Heating Wire, 34-Second Fan. Detailed Implementation

[0038] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0039] Please see Figures 1 to 7 This invention provides an air source heat pump, including an evaporator 1, a condenser 2, a compressor 3, an expansion valve 4, and a defrosting assembly. The defrosting assembly includes multiple rubber defrosting rods 5 and multiple rubber defrosting protrusions 6. The evaporator 1 includes an evaporator body 7 and multiple heat sinks 8. The defrosting assembly also includes a movement adjustment unit, which includes two longitudinal electric slide rails 9, two longitudinal sliders 10, a transverse electric slide rail 11, and a transverse slider 12. The defrosting assembly also includes a defrosting switching unit, which includes a camera 13, a temperature sensor 14, and a supporting housing 15. The defrosting assembly includes a switching housing 16, two switching mechanisms 17, a rubber plate 18, a support plate 19, multiple first heating wires 20, multiple second heating wires 21, a sponge plate 22, multiple sponge strips 23, and multiple microfiber strips 24. The switching mechanism 17 includes a self-locking motor 25, a rotating shaft 26, a switching electric slide rail 27, and a switching slider 28. The defrosting assembly also includes two adsorption units, each comprising an adsorption housing 30 and a first fan 31. Furthermore, the defrosting assembly includes two heating units, each comprising a heating housing 32, multiple third heating wires 33, and a second fan 34.

[0040] The evaporator 1 is connected to the compressor 3, the compressor 3 is connected to the condenser 2, the condenser 2 is connected to the expansion valve 4, the expansion valve 4 is connected to the evaporator 1, a plurality of rubber defrost rods 5 are sequentially arranged on one side of the evaporator 1, and a plurality of rubber defrost protrusions 6 are fixedly connected to the corresponding rubber defrost rods 5 and are sequentially distributed on the outside of the rubber defrost rods 5. Air enters the evaporator 1, where the refrigerant exchanges heat with the surrounding air. Due to the low pressure inside the evaporator 1, the refrigerant absorbs heat from the air and evaporates into a gaseous state, absorbing a large amount of heat in the process. The compressor 3 draws in the gaseous refrigerant and compresses it, increasing its pressure and temperature, thus changing the refrigerant from a low-pressure gaseous state to a high-pressure gaseous state. At this point, the high-pressure gaseous refrigerant enters the condenser 2 from the compressor 3, where it exchanges heat with the cooling medium. Due to the high pressure inside the condenser 2, the refrigerant releases heat and condenses into a liquid state. The high-pressure liquid refrigerant enters the expansion valve 4 from the condenser 2 through a pipe. The expansion valve 4 throttles and reduces the pressure and temperature of the refrigerant, which then re-enters the evaporator 1, thus repeating the cycle. When frost is detected on the evaporator 1, the rubber defrost rod 5 moves to one side of the evaporator 1 and moves repeatedly, working in conjunction with the rubber defrost protrusion 6 to scrape away and clean the frost on the evaporator 1.

[0041] Secondly, multiple heat sinks 8 are sequentially arranged on the evaporator tube of the evaporator body 7. The heat sinks 8 dissipate heat from the evaporator tube of the evaporator 1. Since the evaporator 1 is installed outdoors, when the surface temperature of the heat sinks 8 is below zero degrees Celsius and below the outdoor air dew point temperature, frost will form on the surface of the evaporator.

[0042] Meanwhile, the movable adjustment unit is disposed on the evaporator body 7; two longitudinal electric slide rails 9 are symmetrically disposed on one side of the evaporator body 7, and two longitudinal sliders 10 are slidably connected to the corresponding longitudinal electric slide rails 9. A transverse electric slide rail 11 is disposed between the two longitudinal sliders 10, and a transverse slider 12 is slidably connected to the transverse electric slide rail 11. When the longitudinal electric slide rail 9 is activated, it drives the longitudinal slider 10 to move, causing the transverse electric slide rail 11 to move longitudinally. When the transverse electric slide rail 11 is activated, it drives the transverse slider 12 to move, thereby enabling the support slider to perform omnidirectional adjustment in both longitudinal and transverse directions on one side of the evaporator body 7.

[0043] Additionally, the supporting housing 15 is located below the horizontal slider 12, the switching housing 16 is connected to one end of the supporting housing 15, the camera 13 and the temperature sensor 14 are sequentially located at the other end of the supporting housing 15, the two switching mechanisms 17 are symmetrically arranged on both sides of the switching housing 16, the supporting plate 19 is arranged on the two switching mechanisms 17 and located inside the switching housing 16, the rubber plate 18 is detachably connected to one side of the supporting plate 19, a plurality of rubber defrosting rods 5 are sequentially arranged on the rubber plate 18, the sponge plate 22 is detachably connected to the other side of the supporting plate 19, a plurality of sponge strips 23 are sequentially arranged on the sponge plate 22, a plurality of microfiber strips 24 are sequentially arranged on the corresponding sponge strips 23, a plurality of first heating wires 20 are sequentially arranged inside the supporting plate 19, and a plurality of second heating wires 21 are sequentially arranged on the inner wall of the switching housing 16. The temperature sensor 14 detects the temperature of the heat sink 8. When the temperature is lower than a preset value, it indicates a risk of frost formation. At this time, the camera 13 is activated to capture images of the heat sink 8 and transmits the information to the host computer for analysis and confirmation. After confirming the presence of frost, the switching electric slide rail 27 is activated, driving the switching slider 28 to move, which in turn drives the self-locking motor 25 to move. The rotating shaft 26 slides in the slide groove 29, causing the support plate 19 to move within the support housing 15. Multiple rubber defrosting slide bars are inserted between multiple heat sinks 8 and move in all directions under the action of the longitudinal electric slide rail 9 and the transverse electric slide rail 11 to scrape off the frost. At the same time, the rubber defrosting protrusions 6 are used to improve the defrosting effect.

[0044] After defrosting, the support plate 19 moves into the switching housing 16. At this time, the self-locking motor 25 starts, driving the support plate 19 to rotate, causing the positions of the sponge strip 23 and the rubber defrosting rod 5 to be swapped. The sponge strip 23 and multiple microfiber strips 24 are inserted between multiple heat sinks 8 to absorb the residual moisture on the heat sinks 8, preventing secondary frost formation. At the same time, when the camera 13 captures dew on the heat sinks 8 but not frost, the above operation can also absorb water to prevent frost formation. The sponge plate 22 can increase the water storage capacity, allowing the sponge strip 23 and microfiber strips 24 to absorb more water. After water absorption is completed, it returns to the switching housing 16. At this time, the first heating wire 20 is activated, causing the support plate 19 to heat up and dry the sponge plate 22. The second heating wire 21 is activated, heating and drying the sponge strip 23 and microfiber strips 24. The moisture is discharged from the opening at the top of the switching housing 16 for reuse.

[0045] Then, both the supporting housing 15 and the switching housing 16 have a sliding groove 29. The rotating shaft 26 is adapted to the sliding groove 29. One end of the rotating shaft 26 is fixedly connected to the supporting plate 19, and the other end of the rotating shaft 26 passes through the sliding groove 29 and is fixedly connected to the output end of the self-locking motor 25. The switching electric slide rail 27 is disposed on one side of the supporting housing 15 and the switching housing 16. The switching slider 28 is slidably connected to the switching electric slide rail 27, and the self-locking motor 25 is fixedly connected to the switching slider 28. When the self-locking motor 25 is started, it drives the rotating shaft 26 to rotate, causing the supporting plate 19 to rotate in the switching housing 16, thereby switching the positions of the rubber defrosting rod 5 and the sponge strip 23. After switching, the switching electric slide rail 27 is started, driving the switching slider 28 to move into the interior of the supporting housing 15 for defrosting or water absorption.

[0046] Furthermore, the two adsorption units are symmetrically arranged above and below the supporting housing 15; the adsorption housing 30 is disposed on the supporting housing 15, the first fan 31 is disposed inside the adsorption housing 30, and the horizontal slider 12 is fixedly connected to the adsorption housing 30. The adsorption housing 30 supports the first fan 31. When the first fan 31 is activated, it can adsorb the scraped frost, preventing it from falling downwards onto the other heat sinks 8.

[0047] Finally, the two heating units are symmetrically arranged on both sides of the supporting housing 15; the heating housing 32 is fixedly connected to the supporting housing 15 and located on one side of the supporting housing 15; a plurality of third heating wires 33 are sequentially arranged inside the heating housing 32; the second fan 34 is arranged inside the heating housing 32 and located on one side of the third heating wires 33. The heating housing 32 supports the second heating wires 21 and the second fan 34. The second heating wires 21 heat the surrounding air, and then the second fan 34 starts to blow hot air onto the heat sink 8, thereby thinning thick, stubborn frost and improving scraping efficiency and effect.

[0048] When using an air-source heat pump according to this embodiment, air enters the evaporator 1, and the refrigerant exchanges heat with the surrounding air. Due to the low pressure inside the evaporator 1, the refrigerant can absorb heat from the air and evaporate into a gaseous state, absorbing a large amount of heat. The compressor 3 draws in the gaseous refrigerant and compresses it, increasing its pressure and temperature, causing the refrigerant to change from a low-pressure gaseous state to a high-pressure gaseous state. At this time, the high-pressure gaseous refrigerant enters the condenser 2 from the compressor 3. In the condenser 2, the refrigerant exchanges heat with the cooling medium. Due to the high pressure inside the condenser 2, the refrigerant can release heat and condense into a liquid state. The high-pressure liquid refrigerant enters the expansion valve 4 from the condenser 2 through a pipe. The expansion valve 4 throttles and reduces the pressure of the refrigerant, lowering its pressure and temperature. The refrigerant after throttling and pressure reduction re-enters the evaporator 1, thus repeating the cycle.

[0049] When frost is detected on the evaporator 1, the temperature sensor 14 detects the temperature of the heat sink 8. If the temperature is lower than a preset value, there is a risk of frost formation. At this time, the camera 13 activates to photograph the heat sink 8 for confirmation. After confirming the presence of frost, the switching electric slide rail 27 is activated, driving the switching slider 28 to move, which in turn drives the self-locking motor 25 to move. The rotating shaft 26 slides in the slide groove 29, causing the support plate 19 to move within the support housing 15. Multiple rubber defrosting slide rods are inserted between multiple heat sinks 8 and move omnidirectionally under the action of the longitudinal electric slide rail 9 and the transverse electric slide rail 11. Simultaneously, in conjunction with the rubber defrosting protrusions 6, the frost on the heat sink 8 is scraped and cleaned. After cleaning, the self-locking motor 25 is activated, driving the rotating shaft 26 to rotate, causing the support plate 19 to move within the support housing 15. The plate 19 rotates on the switching housing 16, causing the rubber defrosting rod 5 and the sponge strip 23 to switch positions. After switching, the switching electric slide rail 27 is activated, driving the switching slider 28 to move into the support housing 15 to absorb water, preventing moisture from causing secondary frost. At the same time, when the camera 13 captures dew on the heat sink 8 but it is not frosted, the above operation can also absorb water to prevent frost from forming. While scraping off the frost, the first fan 31 is activated to absorb the scraped frost and prevent it from falling onto other heat sinks 8. With the above structural design, when the evaporator 1 is frosted, there is no need for reverse circulation, and the indoor fan will not stop running, avoiding a decrease in the system's heating performance. It can operate and clean the frost simultaneously without affecting the user's indoor use, greatly improving the user experience.

[0050] Please see Figure 8 The present invention also provides a defrosting control method for an air source heat pump, comprising the following steps:

[0051] S1: The longitudinal electric slide rail 9 and the transverse electric slide rail 11 are activated, moving the support housing 15 to the vicinity of the heat sink 8;

[0052] S2: The temperature sensor 14 detects the temperature of the heat sink 8. When the temperature is lower than the preset value, there is a risk of frost formation. At this time, the camera 13 is turned on to take a picture of the heat sink 8 for confirmation.

[0053] S3: After confirming the presence of frost, the switching electric slide rail 27 is activated, causing the support plate 19 to move within the support housing 15;

[0054] S4: Multiple rubber defrosting slide bars are inserted between multiple heat sinks 8 and move in all directions under the action of the longitudinal electric slide rail 9 and the transverse electric slide rail 11 to scrape off the frost. At the same time, they work with the rubber defrosting protrusions 6 to improve the defrosting effect.

[0055] S5: After defrosting is completed, the support plate 19 moves into the switching housing 16. At this time, the self-locking motor 25 starts and drives the support plate 19 to rotate, so that the positions of the sponge strip 23 and the rubber defrosting rod 5 are swapped.

[0056] S6: The sponge strip 23 and the multiple microfiber strips 24 are inserted between the multiple heat sinks 8 to absorb the residual moisture on the heat sinks 8 and prevent secondary frost formation;

[0057] S7: At the same time, when the camera 13 can capture the presence of dew on the heat sink 8 but not frost, the above operation can be used to absorb the water and prevent frost from forming.

[0058] S8: The longitudinal electric slide rail 9 and the transverse electric slide rail 11 move in all directions to perform defrosting operations on the multiple heat sinks 8 in sequence.

[0059] The longitudinal electric slide rail 9 and the transverse electric slide rail 11 are activated, moving the support housing 15 to the vicinity of the heat sink 8. The temperature sensor 14 detects the temperature of the heat sink 8. When the temperature is lower than a preset value, there is a risk of frost formation. At this time, the camera 13 is activated to photograph the heat sink 8 for confirmation. After confirming the presence of frost, the switching electric slide rail 27 is activated, causing the support plate 19 to move within the support housing 15. Multiple rubber defrosting slide bars are inserted between multiple heat sinks 8 and move omnidirectionally under the action of the longitudinal electric slide rail 9 and the transverse electric slide rail 11 to scrape off the frost. Simultaneously, the rubber defrosting protrusions 6 are used to lift the frost. High defrosting effect; after defrosting, the support plate 19 moves into the switching housing 16. At this time, the self-locking motor 25 starts, driving the support plate 19 to rotate, so that the positions of the sponge strip 23 and the rubber defrosting rod 5 are swapped; the sponge strip 23 and multiple microfiber strips 24 are inserted between multiple heat sinks 8 to absorb the residual moisture on the heat sinks 8 and prevent secondary frost formation; at the same time, when the camera 13 captures dew on the heat sinks 8 but not frost, the above operation can also absorb water to prevent frost formation; the multiple heat sinks 8 are defrosted sequentially by moving omnidirectionally through the longitudinal electric slide rail 9 and the transverse electric slide rail 11.

[0060] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An air source heat pump, comprising an evaporator, a condenser, a compressor, and an expansion valve, wherein the evaporator is connected to the compressor, the compressor is connected to the condenser, the condenser is connected to the expansion valve, and the expansion valve is connected to the evaporator, characterized in that, It also includes a defrosting component; The defrosting assembly includes multiple rubber defrosting rods and multiple rubber defrosting protrusions. The multiple rubber defrosting rods are sequentially arranged on one side of the evaporator, and the multiple rubber defrosting protrusions are respectively fixedly connected to the corresponding rubber defrosting rods and are sequentially distributed on the outside of the rubber defrosting rods. The evaporator includes an evaporator body and multiple heat sinks, with the multiple heat sinks sequentially arranged on the evaporation tubes of the evaporator body; The defrosting assembly also includes a movable adjustment unit, which is disposed on the evaporator body; The movable adjustment unit includes two longitudinal electric slide rails, two longitudinal sliders, a transverse electric slide rail, and a transverse slider. The two longitudinal electric slide rails are symmetrically arranged on one side of the evaporator body. The two longitudinal sliders are slidably connected to the corresponding longitudinal electric slide rails. The transverse electric slide rail is arranged between the two longitudinal sliders, and the transverse slider is slidably connected to the transverse electric slide rail. The defrosting assembly further includes a defrosting switching unit, which includes a camera, a temperature sensor, a supporting shell, a switching shell, two switching mechanisms, a rubber plate, a support plate, multiple first heating wires, multiple second heating wires, a sponge plate, multiple sponge strips, and multiple microfiber strips. The supporting shell is located below the horizontal slider, and the switching shell is connected to one end of the supporting shell. The camera and the temperature sensor are sequentially located at the other end of the supporting shell. The two switching mechanisms are symmetrically arranged on both sides of the switching shell. The support plate is located on the two switching mechanisms and inside the switching shell. The rubber plate is detachably connected to one side of the support plate. Multiple rubber defrosting rods are sequentially arranged on the rubber plate. The sponge plate is detachably connected to the other side of the support plate. Multiple sponge strips are sequentially arranged on the sponge plate, and multiple microfiber strips are sequentially arranged on the corresponding sponge strips. Multiple first heating wires are sequentially arranged inside the support plate, and multiple second heating wires are sequentially arranged on the inner wall of the switching shell.

2. The air source heat pump as described in claim 1, characterized in that, The switching mechanism includes a self-locking motor, a rotating shaft, a switching electric slide rail, and a switching slider. Both the supporting housing and the switching housing have sliding grooves. The rotating shaft is adapted to the sliding grooves. One end of the rotating shaft is fixedly connected to the supporting plate, and the other end of the rotating shaft passes through the sliding groove and is fixedly connected to the output end of the self-locking motor. The switching electric slide rail is located on one side of the supporting housing and the switching housing. The switching slider is slidably connected to the switching electric slide rail, and the self-locking motor is fixedly connected to the switching slider.

3. The air source heat pump as described in claim 2, characterized in that, The defrosting assembly also includes two adsorption units, which are symmetrically arranged above and below the supporting shell. The adsorption unit includes an adsorption shell and a first fan. The adsorption shell is disposed on the supporting shell, the first fan is disposed inside the adsorption shell, and the horizontal slider is fixedly connected to the adsorption shell.

4. The air source heat pump as described in claim 3, characterized in that, The defrosting assembly also includes two heating units, which are symmetrically arranged on both sides of the supporting housing; The heating unit includes a heating shell, a plurality of third heating wires, and a second fan. The heating shell is fixedly connected to the supporting shell and is located on one side of the supporting shell. The plurality of third heating wires are sequentially arranged inside the heating shell, and the second fan is arranged inside the heating shell and is located on one side of the third heating wires.

5. A defrosting control method for an air source heat pump, employing the air source heat pump as described in claim 4, characterized in that, Includes the following steps: The longitudinal and transverse electric slide rails are activated to move the supporting housing to the vicinity of the heat sink. The temperature sensor detects the temperature of the heat sink. When the temperature is lower than the preset value, there is a risk of frost formation. At this time, the camera is turned on to take a picture of the heat sink to confirm. Once frost is confirmed, the electric sliding rail is activated, causing the support plate to move within the support housing. Multiple rubber defrosting rods are inserted between multiple heat sinks and move in all directions under the action of the longitudinal electric slide rail and the transverse electric slide rail to scrape off the frost. At the same time, the rubber defrosting protrusions are used to improve the defrosting effect. After defrosting is completed, the support plate moves into the switching housing. At this time, the self-locking motor starts and drives the support plate to rotate, so that the positions of the sponge strip and the rubber defrosting rod are swapped. The sponge strip and the multiple microfiber strips are inserted between the multiple heat sinks to absorb residual moisture on the heat sinks and prevent secondary frost formation. At the same time, when the camera captures dew on the heat sink but it has not yet frost, the above operation can be used to absorb the water and prevent frost from forming. The multiple heat sinks are defrosted sequentially by moving omnidirectionally along the longitudinal and transverse electric slide rails.

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