Full-direct-current variable-frequency air source heat pump

Abstract

The invention discloses a full-direct-current variable-frequency air source heat pump, and relates to the technical field of air source heat pumps, by using a dust cleaning assembly, the full-direct-current variable-frequency air source heat pump comprises a heat pump main body and an evaporator, and the dust cleaning assembly used for cleaning dust attached to the evaporator is arranged in the heat pump main body; a protection recycling assembly used for absorbing leaked refrigerants in a sealed mode is arranged in the heat pump body, a dust cleaning assembly is used, a bidirectional motor rotates to make a sliding block reciprocate left and right, an automatic pressure regulating pump pumps gas in the heat pump body and conveys the gas into a multi-layer telescopic pipe, and the gas is sprayed to an evaporator through a gas spraying head; compared with a traditional method that the evaporator is cleaned through a brush, the device automatically blows off the dust on the surface of the evaporator through air jet of the air jet heads reciprocating left and right, and the dust on the outer side of the whole evaporator is removed through the two air jet pipes. Airflow blows dust, so that damage to fins on the surface of the evaporator by cleaning tools such as brushes and rags is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air source heat pumps, and in particular to a full DC variable frequency air source heat pump. Background Art

[0002] The full DC variable frequency air source heat pump is a HVAC equipment based on the heat pump cycle process. The air energy heat pump is mainly composed of four parts, including an evaporator, a condenser, a compressor and an expansion valve. The working process mainly involves the circulation of refrigerant between low temperature and high temperature to achieve the purpose of transferring heat energy from the low temperature area to the high temperature area. The full DC variable frequency technology plays a key role in it. The full DC variable frequency air source heat pump can dynamically adjust the flow of refrigerant through variable frequency control to meet the indoor temperature requirements, thereby improving efficiency, reducing energy consumption, and effectively reducing energy expenses. Compared with traditional heating and cooling systems, the full DC variable frequency air source heat pump has lower noise and provides users with a quieter indoor environment.

[0003] The refrigerant pressure in the air source heat pump pipeline is relatively high, especially the refrigerant after being compressed by the compressor. When there is a cold weld at the pipeline connection or it becomes loose due to high temperature and high pressure, the refrigerant will leak. Most refrigerants are Freon or other chemical gases. These gases are non-toxic at room temperature, but may produce toxic or flammable gases at high temperatures, posing a threat to health. Secondly, refrigerant leakage will also lead to a significant decrease in the refrigeration effect. If it is not repaired for a long time, it will further damage the life of the compressor and lead to higher maintenance costs.

[0004] The evaporator of the air source heat pump is exposed to the outside and absorbs heat energy from the air through heat exchange with the air. However, this causes a large amount of dust and debris to adhere to the evaporator. The dust and debris will isolate the evaporator from direct contact with the air, directly affecting the heat exchange of the evaporator and thus the heating capacity of the air source heat pump. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a full DC variable frequency air source heat pump, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a full DC variable frequency air source heat pump, used for providing heating for floor heating, comprising a heat pump body and an evaporator, a dust cleaning component for removing dust adhered to the evaporator is arranged inside the heat pump body, and a protective recovery component for sealing and absorbing leaked refrigerant is arranged inside the heat pump body.

[0009] Furthermore, the dust cleaning component includes an automatic pressure regulating pump fixedly connected to the inside of the heat pump body, an air intake pipe is fixedly connected to the outside of the automatic pressure regulating pump, an air supply pipe is fixedly connected to the top of the automatic pressure regulating pump, the air supply pipe is fixedly connected to the heat pump body, a multi-layer telescopic pipe is rotatably connected to the top of the air supply pipe, and the air supply pipe is connected to the multi-layer telescopic pipe.

[0010] Furthermore, a bidirectional motor is fixedly connected inside the heat pump body, an output shaft of the bidirectional motor is fixedly connected to a threaded rod, a fixed block is fixedly connected inside the heat pump body, the fixed block is rotatably connected to the threaded rod, a slider is threadedly connected to the outer side of the threaded rod, an injection pipe is fixedly connected to the top of the slider, the injection pipe is connected to the multi-layer telescopic tube, and an injection head is fixedly connected to the side of the injection pipe close to the evaporator.

[0011] Furthermore, the threaded rods are symmetrically arranged with reference to the fixing block, the threads of the two threaded rods are opposite, and the air injection pipes are symmetrically arranged with reference to the fixing block.

[0012] Furthermore, the protective recovery component includes a folding airbag fixedly connected to the inside of the heat pump body, a recovery pipe is fixedly connected to the outside of the air supply pipe, the recovery pipe is communicated with the folded airbag, a bracket is fixedly connected to the top of the automatic pressure regulating pump, an electric telescopic rod is fixedly connected to the top of the bracket, a rubber plug is fixedly connected to the top of the electric telescopic rod, an air diffuser is fixedly connected to the outside of the rubber plug, and an air intake filter tube is fixedly connected to the inside of the heat pump body.

[0013] Furthermore, a moving rod is fixedly connected to the outside of the rubber stopper, a telescopic connecting rod is rotatably connected to the bottom of the moving rod, a sealing plate is fixedly connected to the bottom of the moving rod, the sealing plate is slidably connected to the recovery pipe, and a sealing gasket is fixedly connected to the end of the telescopic connecting rod away from the moving rod, and the sealing gasket is rotatably connected to the gas pipe.

[0014] Furthermore, an early warning component for warning of refrigerant leakage and facilitating the judgment of leakage speed is provided on the outside of the air diffuser, and the early warning component includes an early warning rod fixedly connected to the inside of the air diffuser, the early warning rod is slidably connected to the heat pump body, a connecting tube is fixedly connected to the bottom of the early warning rod, an active rod is slidably connected to the inside of the connecting tube, a power fan is fixedly connected to the bottom of the active rod, a connecting block is fixedly connected to the top of the active rod, and a rotating block is fixedly connected to the bottom of the connecting tube.

[0015] Furthermore, a rotating plate is rotatably connected to the top of the warning rod, a pop-up spring is fixedly connected to the side of the rotating plate close to the warning rod, the pop-up spring is fixedly connected to the warning rod, and a warning light is fixedly connected to the side of the pop-up spring away from the warning rod.

[0016] (III) Beneficial effects

[0017] The full DC variable frequency air source heat pump provided by the present invention has the following beneficial effects:

[0018] 1. The present invention uses a protective recovery component. The electric telescopic rod extends to drive the rubber plug to seal the bottom of the air inlet filter tube. At the same time, the sealing gasket rotates to seal the inside of the air delivery pipe. The leaked refrigerant is sealed inside the heat pump body to prevent the refrigerant from leaking outward. The sealing piece opens the inside of the recovery tube, and the automatic pressure regulating pump extracts the leaked refrigerant and rushes it into the folding air bag, thereby achieving the purpose of recovering the leaked refrigerant. Compared with the traditional air source heat pump, the leaked refrigerant is automatically sealed inside the heat pump body to prevent the refrigerant from leaking out and polluting the environment and endangering the safety of users. At the same time, the leaked refrigerant is absorbed and stored in the folding air bag, so that the leaked refrigerant can be processed and reused, thereby avoiding the waste of refrigerant.

[0019] The automatic pressure regulating pump draws the gas inside the heat pump body through the suction pipe and transports it to the inside of the multi-layer telescopic tube, so that the gas circulates inside the heat pump body, so that the heat pump body can cool down various electronic components and avoid overheating and damage of various electronic components. Some of the excess heat inside the heat pump body can be absorbed by the refrigerant, so as to achieve the effect of recycling and utilizing excess heat. Compared with the traditional air source heat pump, the heat generated by various electronic components is utilized to cool down various electronic components and recycle the excess heat for heating the refrigerant, so that the excess heat is recycled and utilized to heat the refrigerant, thereby improving the heat absorption of the heat pump body, and then optimizing the heat conversion efficiency of the heat pump body.

[0020] 2. The present invention uses a dust cleaning component. The two-way motor rotates to make the slider reciprocate left and right. The automatic pressure regulating pump draws the gas inside the heat pump body and transports it to the inside of the multi-layer telescopic tube. The gas is sprayed to the evaporator through the nozzle. The two nozzles blow off the dust on the outside of the entire evaporator, thereby achieving the effect of clearing dust and debris adhering to the evaporator. Compared with the traditional method of cleaning the evaporator with a brush, the device automatically blows off the dust on the surface of the evaporator through the nozzle that reciprocates left and right. The airflow blows the dust away, avoiding damage to the fins on the surface of the evaporator by cleaning tools such as brushes and rags.

[0021] 3. The present invention uses an early warning component. The air diffuser drives the early warning rod to pass through the heat pump body, and the warning light extends out and is exposed. The light of the warning light achieves the effect of reminding the user that there is a refrigerant leakage inside the heat pump body. At the same time, the connecting tube drives the rotating block to move upward. Since the interior of the heat pump body is sealed, the pressure inside the heat pump body changes with the refrigerant leakage rate. Therefore, the airflow inside the recovery pipe changes with the suction force of the automatic pressure regulating pump. The power fan inside the recovery pipe changes its rotation speed with the airflow inside the recovery pipe. The early warning rod drives the rotating plate to rotate the warning light. The user can roughly infer the refrigerant leakage rate through the rotation speed of the warning light, thereby achieving the effect of inferring the refrigerant leakage rate. Compared with the traditional heat pump heat medium leakage maintenance, the refrigerant leakage rate can be obtained through the rotation speed of the warning light when the user does not open the heat pump body. Therefore, the maintenance personnel can judge the size of the leakage point, thereby avoiding the situation where a large amount of refrigerant leakage and pollution of the environment is caused by directly opening the heat pump body for maintenance. The user can wait for the warning light to rotate slowly or stop rotating for maintenance to reduce the refrigerant leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of part of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the dust removal component of the present invention;

[0025] Figure 4 It is a schematic cross-sectional view of the multi-layer telescopic tube structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the protection and recovery component of the present invention;

[0027] Figure 6 This is a schematic diagram of the sealing sheet structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the warning pole of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the early warning component of the present invention.

[0030] The numbers in the figure represent:

[0031] 1. Heat pump body; 2. Evaporator;

[0032] The dust removal components include: 31, automatic pressure regulating pump; 32, suction pipe; 33, air delivery pipe; 34, multi-layer telescopic pipe; 35, bidirectional motor; 36, threaded rod; 37, fixed block; 38, slider; 39, jet pipe; 310, jet head;

[0033] The protective recovery component includes: 41, folding airbag; 42, recovery pipe; 43, bracket; 44, electric telescopic rod; 45, rubber plug; 46, air diffuser; 47, air intake filter tube; 48, moving rod; 49, sealing sheet; 410, telescopic connecting rod; 411, sealing pad;

[0034] The early warning component includes: 51, early warning rod; 52, connecting tube; 53, active rod; 54, power fan; 55, rotating block; 56, connecting block; 57, rotating sheet; 58, pop-up spring; 59, warning light. DETAILED DESCRIPTION

[0035] 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.

[0036] refer to Figures 1 to 8 A full DC variable frequency air source heat pump according to a preferred embodiment of the present invention will be described in detail below.

[0037] A full DC variable frequency air source heat pump is used to provide heating for floor heating, including a heat pump body 1 and an evaporator 2. Fins are fixedly connected to the outside of the evaporator 2. The fins are mainly made of aluminum foil with a clear water film. The air is in full contact with the heat transfer area of ​​the fins, so that the heat in the air is absorbed more efficiently. A dust cleaning component for removing dust adhered to the evaporator 2 is arranged inside the heat pump body 1. A protective recovery component for sealing and absorbing leaked refrigerant is arranged inside the heat pump body 1.

[0038] The dust cleaning component includes an automatic pressure regulating pump 31 fixedly connected to the inside of the heat pump body 1. The automatic pressure regulating pump 31 automatically changes the suction force according to the pressure change. By using components such as a microprocessor, a pressure sensor, a variable resistor, an inflation motor, an air pump and an inflation tube, the air pump can detect the actual air pressure in the inflation tube and compare the actual air pressure value with the set standard air pressure value, thereby generating a control signal through the microprocessor and sending it to the inflation motor to realize automatic adjustment of the air pressure. An intake pipe 32 is fixedly connected to the outside of the automatic pressure regulating pump 31. The intake pipe 32 is C-shaped, and a plurality of intake holes are provided at the top of the intake pipe 32. An air supply pipe 33 is fixedly connected to the top of the automatic pressure regulating pump 31. Two air supply pipes 33 are provided. The two air supply pipes 33 are connected by a connecting pipe. The air supply pipe 33 is fixedly connected to the heat pump body 1. A multi-layer telescopic pipe 34 is rotatably connected to the top of the air supply pipe 33. A four-layer telescopic structure is provided inside the multi-layer telescopic pipe 34 to make the telescopic length longer. The air supply pipe 33 is connected to the multi-layer telescopic pipe 34.

[0039] A bidirectional motor 35 is fixedly connected inside the heat pump body 1, and an external power supply of the bidirectional motor 35 controls the forward and reverse rotation of its output shaft. A threaded rod 36 is fixedly connected to the output shaft of the bidirectional motor 35, and a fixed block 37 is fixedly connected inside the heat pump body 1. The fixed block 37 is rotatably connected to the threaded rod 36. A slider 38 is threadedly connected to the outer side of the threaded rod 36. The slider 38 is slidably connected to the heat pump body 1. An injection pipe 39 is fixedly connected to the top of the slider 38. The injection pipe 39 is slidably connected to the top of the heat pump body 1, and the injection pipe 39 is connected to the multi-layer telescopic tube 34. A nozzle head 310 is fixedly connected to the side of the injection pipe 39 close to the evaporator 2.

[0040] The threaded rods 36 are symmetrically arranged with reference to the fixing block 37 , the threads of the two threaded rods 36 are opposite, and the air injection pipes 39 are symmetrically arranged with reference to the fixing block 37 .

[0041] The protective recovery component includes a folding airbag 41 fixedly connected to the inside of the heat pump body 1. The folding airbag 41 is made of the same material as an oxygen bag, and multiple gases of atmospheric pressure can be rushed into the inside. A recovery pipe 42 is fixedly connected to the outside of the gas supply pipe 33, and the recovery pipe 42 is connected to the folding airbag 41. The folding airbag 41 is installed at the bottom of the recovery pipe 42. A bracket 43 is fixedly connected to the top of the automatic pressure regulating pump 31, and an electric telescopic rod 44 is fixedly connected to the top of the bracket 43. A refrigerant monitor is connected to the outside of the electric telescopic rod 44. When the refrigerant monitor detects the refrigerant, it will trigger the extension of the electric telescopic rod 44. The extension and contraction of the electric telescopic rod 44 is controlled by an external power supply. A rubber plug 45 is fixedly connected to the top of the electric telescopic rod 44, and an air diffuser 46 is fixedly connected to the outside of the rubber plug 45. The air diffuser 46 is semicircular. An air intake filter pipe 47 is fixedly connected to the inside of the heat pump body 1, and a filter screen is arranged on the top of the air intake filter pipe 47 to prevent dust from passing through.

[0042] A moving rod 48 is fixedly connected to the outside of the rubber stopper 45, a telescopic connecting rod 410 is rotatably connected to the bottom of the moving rod 48, a sealing sheet 49 is fixedly connected to the bottom of the moving rod 48, the sealing sheet 49 is slidably connected to the recovery pipe 42, and a sealing gasket 411 is fixedly connected to the end of the telescopic connecting rod 410 away from the moving rod 48, and the sealing gasket 411 is rotatably connected to the gas supply pipe 33.

[0043] An early warning component for warning of refrigerant leakage and facilitating the judgment of leakage speed is arranged on the outside of the air diffuser 46, and the early warning component includes an early warning rod 51 fixedly connected to the inside of the air diffuser 46, and the early warning rod 51 is slidably connected to the heat pump body 1, and a connecting tube 52 is fixedly connected to the bottom of the early warning rod 51, and an active rod 53 is slidably connected to the inside of the connecting tube 52, and a power fan 54 is fixedly connected to the bottom of the active rod 53, and the power fan 54 is located inside the recovery pipe 42, a connecting block 56 is fixedly connected to the top of the active rod 53, and a rotating block 55 is fixedly connected to the bottom of the connecting tube 52.

[0044] The top of the warning rod 51 is rotatably connected to a rotating piece 57, and a side of the rotating piece 57 close to the warning rod 51 is fixedly connected to a spring 58. Figure 8 In the middle, it is in a compressed state, the pop-up spring 58 is fixedly connected to the warning rod 51 , and a warning light 59 is fixedly connected to the side of the pop-up spring 58 away from the warning rod 51 .

[0045] The following is the entire working process and working principle of the above embodiment: the heat pump body 1 is a part of the air source heat pump heating system. The heat pump body 1 absorbs heat from the outdoor air through the refrigerant inside the evaporator 2. The heat absorbed by the refrigerant is increased through the refrigerant compression process in the heat pump. The increased heat is released to the hot water used by the indoor heating system through the condenser. The heated hot water is sent to the indoor floor heating terminal, radiator or fan coil through a circulating water pump. The heat is dissipated through the floor heating terminal, radiator or fan coil to achieve the effect of heating the room temperature;

[0046] The user turns on the automatic pressure regulating pump 31. Since the various electronic components inside the heat pump body 1 are powered on, heat will be generated and dissipated into the gas inside the heat pump body 1. In addition, the condenser and the compressor will dissipate part of the heat into the gas inside the heat pump body 1. The automatic pressure regulating pump 31 extracts the gas inside the heat pump body 1 through the suction pipe 32 and transports it to the inside of the multi-layer telescopic tube 34. At the same time, the outside air enters the inside of the heat pump body 1 through the air intake filter tube 47. The outside air is blocked and dispersed by the air diffuser 46 and is supplemented into the inside of the heat pump body 1 to maintain the air pressure balance, so that the gas inside the heat pump body 1 circulates, so as to achieve the effect of cooling the various electronic components by the heat pump body 1, and avoid overheating and damage of various electronic components. The gas inside the multi-layer telescopic tube 34 passes through the multi-layer telescopic tube 34. The contraction tube 34 enters the inside of the injection tube 39, and the gas carrying the excess heat in the heat pump body 1 is sprayed toward the evaporator 2 through the injection head 310. The refrigerant in the evaporator 2 absorbs the heat in the gas, so that the evaporator 2 can absorb the excess heat in the heat pump body 1, thereby achieving the effect of recycling the excess heat. Compared with the traditional air source heat pump, the device utilizes the heat generated by various electronic components, that is, it cools down the various electronic components and recycles the excess heat for heating the refrigerant, so that the excess heat generated in the heat pump body 1 is recycled and utilized to heat the refrigerant in the evaporator 2, thereby improving the heat absorption of the refrigerant, and then optimizing the heat conversion efficiency of the heat pump. At the same time, the refrigerant can be recycled from the condenser, compressor and expansion chamber inside the heat pump body 1. The expansion valve or its interconnected pipes leak. Due to the complexity of the pipes, it is difficult to quickly determine the leakage point. When the refrigerant monitor on the outside of the electric telescopic rod 44 detects the refrigerant, the electric telescopic rod 44 will be triggered to extend. The extension of the electric telescopic rod 44 drives the rubber plug 45 fixedly connected to it to move upward, and the rubber plug 45 seals the bottom of the air intake filter tube 47. At the same time, the rubber plug 45 drives the moving rod 48 fixedly connected to it to move upward, and the moving rod 48 drives the telescopic connecting rod 410 rotatably connected to it to rotate, and the telescopic connecting rod 410 contracts. The telescopic connecting rod 410 drives the sealing gasket 411 fixedly connected to it to rotate to seal the inside of the gas delivery pipe 33, so that the inside of the heat pump body 1 is sealed, so that the leaked refrigerant is sealed. Inside the heat pump body 1, the refrigerant is prevented from leaking outwards. At the same time, the moving rod 48 drives the sealing plate 49 fixedly connected thereto to move upward, and the sealing plate 49 opens the inside of the recovery pipe 42. The automatic pressure regulating pump 31 extracts the refrigerant leaked from the heat pump body 1 through the suction pipe 32, and rushes into the folding airbag 41 through the recovery pipe 42, so that the refrigerant is recovered and stored in the folding airbag 41, thereby achieving the purpose of recovering the leaked refrigerant. Compared with the traditional air source heat pump, the leaked refrigerant is automatically sealed inside the heat pump body 1, thereby avoiding the leakage of refrigerant to pollute the environment and endanger the safety of users. At the same time, the leaked refrigerant is absorbed and stored in the folding airbag 41, so that the leaked refrigerant can be processed and reused, thereby avoiding the waste of refrigerant.

[0047] Furthermore, the automatic pressure regulating pump 31 extracts the gas inside the heat pump body 1 through the suction pipe 32 and transports it to the inside of the multi-layer telescopic tube 34. The gas enters the inside of the jet pipe 39 through the multi-layer telescopic tube 34. When the gas is sprayed toward the evaporator 2 through the jet head 310, the user turns on the bidirectional motor 35. The output shaft of the bidirectional motor 35 rotates forward and reverse alternately. The output shaft of the bidirectional motor 35 drives the threaded rod 36 fixedly connected thereto to rotate forward and reverse alternately. Since the slider 38 is slidably connected to the heat pump body 1, the threaded rod 36 drives the slider 38 threadedly connected thereto to reciprocate left and right. The slider 38 drives the jet pipe 39 fixedly connected thereto to reciprocate left and right. The jet pipe 39 drives the multi-layer telescopic tube 34 to expand and contract. The jet pipe 39 drives the multi-layer telescopic tube 34 to expand and contract. 9 drives the nozzle head 310 to reciprocate left and right, and the gas inside the nozzle pipe 39 is ejected from the nozzle head 310 to blow off the dust and debris inside the gap of the fins on the outside of the evaporator 2. The two nozzle pipes 39 blow off the dust on the outside of the entire evaporator 2. The dust will diffuse into the air and settle on the ground outside the heat pump body 1, thereby achieving the effect of removing dust and debris adhered to the evaporator 2. Compared with the traditional method of cleaning the evaporator 2 with a brush, the device automatically blows off the dust on the surface of the evaporator 2 through the nozzle head 310 that reciprocates left and right. The airflow blows the dust to avoid damage to the fins on the surface of the evaporator 2 by cleaning tools such as brushes and rags, and the reciprocating movement of the nozzle pipe 39 will not block the evaporator 2 too much, reducing the impact on the heat exchange between the evaporator 2 and the outside air.

[0048] Furthermore, when the diffuser sheet 46 moves upward, it drives the warning rod 51 fixedly connected thereto to move upward, and the warning rod 51 drives the rotating sheet 57 rotatably connected thereto to move upward, and the warning rod 51 passes through the heat pump body 1 so that the rotating sheet 57 passes through the heat pump body 1. Figure 8The rotating piece 57 is in a compressed state, and the rotating piece 57 loses the obstruction of the heat pump body 1. The rebound spring 58 stretches to push the rotating piece 57 to rotate, and the rotating piece 57 rotates to a horizontal state. The warning light 59 on the outside of the rotating piece 57 extends out of the heat pump body 1 with the movement of the rotating piece 57 and is exposed to the outside of the heat pump body 1. The light of the warning light 59 achieves the effect of reminding the user that the refrigerant is leaking inside the heat pump body 1. At the same time, the connecting tube 52 drives the rotating block 55 to move upward, so that the rotating block 55 moves to the outside of the connecting block 56. Since the inside of the heat pump body 1 is sealed, the pressure inside the heat pump body 1 changes with the refrigerant leakage rate. The automatic pressure regulating pump 31 automatically changes the suction size according to the pressure change, so that the airflow inside the gas pipe 33 follows the suction size change of the automatic pressure regulating pump 31. Therefore, the airflow inside the recovery pipe 42 follows the suction size change of the automatic pressure regulating pump 31. The power fan 54 inside the recovery pipe 42 changes the speed according to the airflow change inside the recovery pipe 42. The fan 54 drives the active rod 53 fixedly connected thereto to rotate, the active rod 53 drives the connecting block 56 fixedly connected thereto to rotate, the connecting block 56 drives the rotating block 55 to rotate, the rotating block 55 drives the connecting tube 52 to rotate the warning rod 51, the warning rod 51 drives the rotating piece 57 to rotate the warning light 59, the fast refrigerant leakage speed makes the air flow speed inside the recovery pipe 42 fast and thus the warning light 59 rotates fast, the user can roughly infer the refrigerant leakage speed through the rotation speed of the warning light 59, thereby achieving the effect of inferring the refrigerant leakage speed, compared with the traditional heat pump heat medium leakage repair, when the user does not open the heat pump main body 1, the refrigerant leakage speed can be obtained through the rotation speed of the warning light 59, so the maintenance personnel can judge the size of the leakage point, thereby avoiding the situation where a large amount of refrigerant leakage and pollution of the environment is caused by directly opening the heat pump main body 1 for maintenance, and the user can wait for the warning light 59 to rotate slowly or stop rotating for maintenance, thereby reducing the refrigerant leakage.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full DC variable frequency air source heat pump for floor heating, comprising a heat pump body (1) and an evaporator (2), characterized in that: A dust cleaning component for removing dust adhering to the evaporator (2) is arranged inside the heat pump body (1), and a protective recovery component for sealing and absorbing leaked refrigerant is arranged inside the heat pump body (1).

2. A full DC variable frequency air source heat pump according to claim 1, characterized in that: The dust cleaning component comprises an automatic pressure regulating pump (31) fixedly connected to the inside of the heat pump body (1); an air intake pipe (32) is fixedly connected to the outside of the automatic pressure regulating pump (31); an air supply pipe (33) is fixedly connected to the top of the automatic pressure regulating pump (31); the air supply pipe (33) is fixedly connected to the heat pump body (1); a multi-layer telescopic pipe (34) is rotatably connected to the top of the air supply pipe (33); and the air supply pipe (33) is in communication with the multi-layer telescopic pipe (34).

3. A full DC variable frequency air source heat pump according to claim 2, characterized in that: A bidirectional motor (35) is fixedly connected inside the heat pump body (1), and an output shaft of the bidirectional motor (35) is fixedly connected to a threaded rod (36). A fixed block (37) is fixedly connected inside the heat pump body (1), and the fixed block (37) is rotatably connected to the threaded rod (36). A slider (38) is threadedly connected to the outer side of the threaded rod (36), and an injection pipe (39) is fixedly connected to the top of the slider (38). The injection pipe (39) is connected to the multi-layer telescopic pipe (34), and an injection head (310) is fixedly connected to the side of the injection pipe (39) close to the evaporator (2).

4. A full DC variable frequency air source heat pump according to claim 3, characterized in that: The threaded rods (36) are symmetrically arranged with the fixing block (37) as a reference, the threads of the two threaded rods (36) are opposite, and the air injection pipes (39) are symmetrically arranged with the fixing block (37) as a reference.

5. A full DC variable frequency air source heat pump according to claim 2, characterized in that: The protective recovery component comprises a folding airbag (41) fixedly connected to the inside of the heat pump body (1); a recovery pipe (42) is fixedly connected to the outside of the air delivery pipe (33); the recovery pipe (42) is communicated with the folding airbag (41); a bracket (43) is fixedly connected to the top of the automatic pressure regulating pump (31); an electric telescopic rod (44) is fixedly connected to the top of the bracket (43); a rubber plug (45) is fixedly connected to the top of the electric telescopic rod (44); a diffuser sheet (46) is fixedly connected to the outside of the rubber plug (45); and an air intake filter pipe (47) is fixedly connected to the inside of the heat pump body (1).

6. A full DC variable frequency air source heat pump according to claim 5, characterized in that: A moving rod (48) is fixedly connected to the outer side of the rubber stopper (45), a telescopic connecting rod (410) is rotatably connected to the bottom of the moving rod (48), a sealing sheet (49) is fixedly connected to the bottom of the moving rod (48), the sealing sheet (49) is slidably connected to the recovery pipe (42), and a sealing pad (411) is fixedly connected to one end of the telescopic connecting rod (410) away from the moving rod (48), and the sealing pad (411) is rotatably connected to the gas supply pipe (33).

7. A full DC variable frequency air source heat pump according to claim 5, characterized in that: An early warning component for warning of refrigerant leakage and facilitating the determination of leakage speed is arranged on the outside of the air diffuser (46), the early warning component comprising an early warning rod (51) fixedly connected to the inside of the air diffuser (46), the early warning rod (51) being slidably connected to the heat pump body (1), a connecting tube (52) being fixedly connected to the bottom of the early warning rod (51), an active rod (53) being slidably connected to the inside of the connecting tube (52), a power fan (54) being fixedly connected to the bottom of the active rod (53), a connecting block (56) being fixedly connected to the top of the active rod (53), and a rotating block (55) being fixedly connected to the bottom of the connecting tube (52).

8. A full DC variable frequency air source heat pump according to claim 7, characterized in that: The top of the warning rod (51) is rotatably connected to a rotating plate (57); a side of the rotating plate (57) close to the warning rod (51) is fixedly connected to a pop-up spring (58); the pop-up spring (58) is fixedly connected to the warning rod (51); and a side of the pop-up spring (58) away from the warning rod (51) is fixedly connected to a warning light (59).

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