Fresh air fluorine pump air conditioner indoor unit

Abstract

The utility model discloses an indoor unit of a fresh air fluorine pump air conditioner, which belongs to the technical field of fluorine pump air conditioning equipment and comprises a case, an evaporation chamber and a circulation chamber are arranged in the case, and an evaporator and an auxiliary fan positioned at the bottom of the evaporator are arranged in the evaporation chamber. A ventilation opening and a heating piece arranged at the ventilation opening are arranged between the auxiliary fan and the evaporator, the circulation chamber is arranged beside the evaporation chamber, a compressor is arranged in the circulation chamber, and the compressor is connected with the evaporator through a condenser and a liquid storage device. According to the scheme, the compressor compresses a low-temperature and low-pressure gas-state refrigerant into a high-temperature and high-pressure gas-state refrigerant, the condenser receives the high-temperature and high-pressure gas-state refrigerant discharged by the compressor, heat is released through heat exchange, the high-temperature and high-pressure gas-state refrigerant is condensed into a high-pressure liquid-state refrigerant to be stored in the liquid storage device, then the high-pressure liquid-state refrigerant is input into the evaporator for heat exchange, and the refrigeration effect is achieved; the scheme is reasonable in structural arrangement and compact in structural layout.

Description

Technical Field

[0001] This utility model relates to a refrigerant pump air conditioning unit, and more specifically, to a fresh air refrigerant pump air conditioning indoor unit. Background Technology

[0002] In scenarios such as data centers, communication base stations, and laboratories, cooling equipment is often required. Traditional precision air conditioners rely on cooling modes such as compressors, condensers, and evaporators. However, such cooling modes have low cooling efficiency and poor cooling effect, making it difficult to meet the cooling needs of the computer room. At the same time, the overall size of the air conditioning equipment components is large, occupying a large amount of indoor space.

[0003] For example, Chinese Patent Publication No. CN220342683U, published on January 12, 2024, describes a utility model entitled "Structure of a Refrigerant Pump Air Conditioning Unit with Same-Side Supply and Return Air." This unit includes a channel steel base, a pleated frame, an indoor air supply mechanism, an evaporator, a condenser, an outdoor exhaust mechanism, a compressor refrigerant pump assembly, an electrical control box, and a return air chamber. The pleated frame and the compressor refrigerant pump assembly are arranged side-by-side on the channel steel base. The indoor air supply mechanism and the evaporator are located inside the pleated frame. The condenser is located at the top of the compressor refrigerant pump assembly, the outdoor exhaust mechanism is located at the top of the condenser, and the return air chamber is located at the top of the pleated frame. This design utilizes prefabricated integrated assembly in the factory, facilitating transportation and on-site installation without the need for individual unit deployment and repeated connection of indoor and outdoor units. Furthermore, the integrated design results in a lower failure rate compared to traditional computer room air conditioners. However, this refrigerant pump air conditioning unit has a large layout, occupies a significant amount of space, and has low cooling efficiency, making it difficult to guarantee indoor cooling needs. Utility Model Content

[0004] This invention overcomes the problem of low cooling efficiency in existing refrigerant pump air conditioner indoor units and provides a new type of refrigerant pump air conditioner indoor unit. This solution can improve the cooling effect of the refrigerant pump air conditioner indoor unit, with a reasonable structural layout and compact structure.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a new type of refrigerant pump air conditioner indoor unit, including a casing, an evaporation chamber and a circulation chamber are provided inside the casing. The evaporation chamber contains an evaporator and an auxiliary fan located at the bottom of the evaporator. A vent and a heating element are provided between the auxiliary fan and the evaporator. The circulation chamber is located beside the evaporation chamber and contains a compressor. The compressor is connected to the evaporator through a condenser and a liquid receiver. In this solution, the compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. The condenser receives the high-temperature, high-pressure gaseous refrigerant discharged from the compressor, releases heat through heat exchange, and condenses it into a high-pressure liquid refrigerant stored in the liquid receiver. This liquid is then fed into the evaporator for heat exchange, achieving a cooling effect. The evaporator and other components are arranged in the evaporation chamber, and the compressor and other components are arranged in the circulation chamber. The auxiliary fan at the bottom of the evaporator provides stable airflow to the evaporator, promoting the heat exchange and evaporation effect, thereby enabling the refrigerant to quickly absorb heat and cool, improving the cooling effect. The circulation chamber and evaporation chamber are arranged adjacent to each other and separated by a partition, which reduces the overall size of the indoor unit.

[0006] Preferably, the evaporation chamber is equipped with an evaporation assembly, which includes the evaporator and the auxiliary fan. Two sets of the evaporation assembly are arranged laterally within the evaporation chamber. The evaporator allows for the heat absorption and evaporation of the liquid refrigerant, while the auxiliary fan discharges the cooled air into the chamber, achieving a cooling effect. The two sets of refrigeration components significantly improve the cooling efficiency, meeting the cooling needs of the computer room.

[0007] Preferably, the auxiliary fan is provided with a mounting plate on top, and the mounting plate has a plurality of mesh holes corresponding to the air outlet position of the auxiliary fan. The mounting plate serves to install and fix the auxiliary fan, and the mesh holes on the mounting plate can rectify the airflow generated by the auxiliary fan, making the airflow entering the evaporator finned tubes more uniform and stable, thereby improving the heat exchange effect.

[0008] Preferably, the evaporator has a drip tray at the bottom with ventilation holes corresponding to the mesh openings, and the heating element is located at the ventilation holes. The drip tray receives condensate generated during heat exchange outside the evaporator. The ventilation holes at the bottom of the drip tray provide airflow for the auxiliary fan, thereby forcing air convection to enhance heat exchange efficiency. The heating element heats the air to promote the evaporation of the refrigerant inside the evaporator and prevents frost or ice formation due to excessive cold outside the evaporator.

[0009] Preferably, the vent has a water-blocking part at its edge facing the evaporator, and the bottom of the water receiving tray has a drain pipe. The water-blocking part can hold the condensate generated by heat exchange at the bottom of the evaporator in the water receiving tray, preventing the condensate from falling into the auxiliary fan through the vent, while the drain pipe can discharge the condensate in the water receiving tray.

[0010] Preferably, the evaporator has an integrated pipe at its inlet, which connects to the evaporator's inlet. The integrated pipe allows refrigerant to be introduced into the evaporator, where it absorbs heat and evaporates into a low-pressure gas, thus cooling the computer room.

[0011] Preferably, the circulation chamber is equipped with a compression system, which includes the compressor and the condenser. Two sets of the compression system are arranged vertically within the circulation chamber. The compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, providing energy to drive the refrigeration cycle. The condenser receives the high-temperature, high-pressure gaseous refrigerant discharged from the compressor, releases heat through heat exchange, and condenses it into a high-pressure liquid refrigerant.

[0012] Preferably, the circulation chamber is further equipped with a gas-liquid separator, which connects the evaporator and the compressor to form a loop. The gas-liquid separator can separate the gas-liquid mixture of refrigerant returning from the evaporator, preventing liquid refrigerant from entering the compressor and causing liquid slugging.

[0013] Preferably, the top of the circulation chamber is provided with heat dissipation holes. The heat dissipation holes on the top of the circulation chamber can achieve a good heat dissipation effect.

[0014] Preferably, the system also includes a control system located in the circulation chamber. The control system can regulate the indoor unit.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) It enables the refrigerant to absorb heat and cool quickly, improves the cooling effect, and ensures the indoor cooling demand; (2) The indoor unit has a reasonable structural design and a compact structure, which can effectively save space and cost; (3) It has multiple protection structures to improve the service life of the indoor unit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a front view of the internal structure of this utility model.

[0018] Figure 3 This is a side view of the internal structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the evaporation chamber of this utility model.

[0020] Figure 5 This is a schematic diagram of the evaporator structure of this utility model.

[0021] In the diagram: 1. Chassis, 2. Evaporation chamber, 3. Circulation chamber, 4. Evaporator, 5. Auxiliary fan, 6. Ventilation hole, 7. Heating element, 8. Compressor, 9. Fan support frame, 10. Mounting plate, 11. Air outlet, 12. Mesh, 13. Water baffle, 14. Water tray, 15. Drain pipe, 16. Integrated pipe, 17. Gas-liquid separator, 18. Heat dissipation hole, 19. Control system, 20. Bracket, 21. Finned tube, 22. Manifold, 23. Return pipe, 24. Integrated connector, 25. Support frame. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] Example 1: As Figures 1 to 5 The indoor unit of a new type of air-conditioning unit with a refrigerant pump includes a casing 1. An evaporation chamber 2 and a circulation chamber 3 are arranged inside the casing 1. The evaporation chamber 2 and the circulation chamber 3 are separated by a partition. An evaporation assembly is arranged in the evaporation chamber 2. In this embodiment, two sets of evaporation assemblies are arranged adjacent to each other along the width direction inside the casing 1. The evaporation assembly includes an evaporator 4 and an auxiliary fan 5. Specifically, the evaporator 4 is located above the auxiliary fan 5. A space is provided at the bottom of the casing 1 to accommodate the auxiliary fan 5. The evaporator 4 and the auxiliary fan 5 are connected. The output end of the auxiliary fan 5 faces the side where the evaporator 4 is located. When the auxiliary fan 5 is working, it can provide a stable gas heat exchange effect for the evaporator 4 and improve the heat absorption and cooling effect of the refrigerant in the evaporator 4. A compression system is arranged inside the circulation chamber 3. Two compression systems are also provided, arranged vertically along the interior of the casing 1. The compression system includes a compressor 8, a condenser, a gas-liquid separator 17, and a receiver. The compressor 8 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, providing energy to drive the refrigeration cycle. The condenser receives the high-temperature, high-pressure gaseous refrigerant discharged from the compressor, releases heat through heat exchange, and condenses it into a high-pressure liquid refrigerant. The high-pressure liquid refrigerant enters the receiver for storage. After being throttled and depressurized by the expansion valve, it enters the internal piping of the evaporator 4 as a low-temperature, low-pressure mist, then forms a low-temperature, low-pressure gas and finally returns to the compressor 1 through the gas-liquid separator 17. The gas-liquid separator 17 separates the gas-liquid mixture returning from the evaporator 4, preventing liquid refrigerant from entering the compressor 8 and causing liquid slugging.

[0024] Furthermore, an installation plate 10 is provided inside the evaporation chamber 2. The installation plate 10 is horizontally arranged for mounting the auxiliary fan 5. A fan support frame 9 is provided at the bottom of the auxiliary fan 5, and a bracket 20 is provided on the outside of the auxiliary fan 5. The bracket 20 is used to fix the auxiliary fan 5 as a whole. The bottom of the bracket 20 is fixed to the fan support frame 9, and the top of the bracket 20 has four vertical connecting rods. The top of the bracket 20 is fixed to the installation plate 10, so that the auxiliary fan 5 is installed between the bottom of the casing 1 and the installation plate 10 through the bracket 20, forming a stable arrangement. The installation plate 10 is provided with a through-hole structure to cooperate with the output end of the auxiliary fan 5 and connect the auxiliary fan 5 and the interior of the evaporator 4.

[0025] Furthermore, a grid-shaped mesh 12 is provided on the mounting plate 10. The mesh 12 is a small rectangular through hole. The mesh on the mounting plate 10 can rectify the airflow generated by the auxiliary fan 5, making the airflow entering the finned tube of the evaporator 4 more uniform and stable, and improving the heat exchange effect.

[0026] Evaporators 4 are arranged above mounting plate 10 and spaced apart. A drip tray 14 is provided at the bottom of each evaporator 4. The drip tray 14 is fixed inside the casing 1 by a horizontal bracket on the inner wall of the casing 1. The middle of the drip tray 14 is horizontal, with both ends curving outwards to support the inverted V-shaped evaporator 4. An internal cavity is formed within the evaporator 4. To ensure communication between the auxiliary fan 5 and the cavity within the evaporator 4, a ventilation hole 6 is provided in the middle of the horizontal portion of the drip tray 14, aligned with the output end of the auxiliary fan 5. Multiple sets of parallel-arranged finned tubes 21 are arranged inside the evaporator 4. Refrigerant can pass through the finned tubes 21. When the auxiliary fan 5 operates, it delivers a stable airflow to the cavity inside the evaporator 4, improving heat exchange of the refrigerant in the finned tubes 21 and thus enhancing the cooling effect of the indoor unit.

[0027] Furthermore, the inlet and outlet ends of the finned tubes 21 of the evaporator 4 are located on the same side of the evaporator 4. The inlet end of the finned tube 21 is connected to the integrated pipe 16. The refrigerant from both sides of the evaporator 4 flows into the return pipe 23 after being collected by the manifold 22. The return pipe 23 is connected to the gas-liquid separator 17. The liquid refrigerant flows into each finned tube 21 in the evaporator 4 through the integrated pipe 16, and after heat exchange, it forms a low-temperature, low-pressure gaseous refrigerant, which then collects in the return pipe 23 and enters the gas-liquid separator 17 for gas-liquid separation. The separated gaseous refrigerant returns to the compressor 8 for another cycle. One end of the integrated pipe 16 is connected to the expansion valve, and the other end is U-shaped. Two sets of integrated connectors 24 are provided at the end of the U-shape. The integrated connectors 24 have multiple sets of output pipes distributed in a ring for connecting to the inlet ends of each finned tube 21.

[0028] Furthermore, a water-blocking part 13 is provided at the horizontal structure of the water receiving tray 14. The water-blocking part 13 is located on the outer periphery of the ventilation hole 6. The water-blocking part 13 is a baffle structure, which is arranged vertically in a rectangular manner around the ventilation hole 6, forming a water receiving trough with the periphery of the water receiving tray 14. When the heat exchange fins inside the evaporator 4 are exchanging heat, condensate will also be generated inside the evaporator 4. The water receiving tray 14 at the bottom of the evaporator 4 can collect this part of the condensate. A drain pipe 15 is provided at the water receiving trough, which can drain the water accumulated in the water receiving tray 14 in a timely manner.

[0029] It should be noted that, since there are two sets of evaporation components in this embodiment, the integrated pipe 16 and drain pipe 15 in the two sets of evaporators 4 are connected in parallel, which greatly simplifies the piping structure. It should also be noted that, in order to prevent airflow interference between the two sets of auxiliary fans 5, a baffle structure is also arranged between the two sets of auxiliary fans 5 to ensure the independence of operation between the two auxiliary fans 5.

[0030] Furthermore, a heating element 7 is installed at the ventilation hole 6 of the water tray 14. Specifically, the heating element 7 is fixed in the middle of the ventilation hole 6 by a mounting base. There are two sets of heating elements 7. When the auxiliary fan 5 is working, the airflow generated enters the evaporator 4 and passes through the heating element 7. The airflow is heated to a certain extent by the heating element 7. On the one hand, it can heat the air to promote the evaporation of refrigerant in the evaporator 4. On the other hand, it can also prevent the outside of the evaporator 4 from becoming too cold and frosting or freezing. The water baffle 13 on the water tray 14 can also protect the heating element 7 and prevent water accumulation from damaging the heating element 7.

[0031] Example 2: As Figures 1 to 5The indoor unit of a new type of air-conditioning unit with a refrigerant pump includes a casing 1. An evaporation chamber 2 and a circulation chamber 3 are arranged inside the casing 1. The evaporation chamber 2 and the circulation chamber 3 are separated by a partition. An evaporation assembly is arranged in the evaporation chamber 2. In this embodiment, two sets of evaporation assemblies are arranged adjacent to each other along the width direction inside the casing 1. The evaporation assembly includes an evaporator 4 and an auxiliary fan 5. Specifically, the evaporator 4 is located above the auxiliary fan 5. A space is provided at the bottom of the casing 1 to accommodate the auxiliary fan 5. The evaporator 4 and the auxiliary fan 5 are connected. The output end of the auxiliary fan 5 faces the side where the evaporator 4 is located. When the auxiliary fan 5 is working, it can provide a stable gas heat exchange effect for the evaporator 4 and improve the heat absorption and cooling effect of the refrigerant in the evaporator 4. A compression system is arranged inside the circulation chamber 3. Two compression systems are also provided, arranged vertically along the interior of the casing 1. The compression system includes a compressor 8, a condenser, a gas-liquid separator 17, and a receiver. The compressor 8 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant, providing energy to drive the refrigeration cycle. The condenser receives the high-temperature, high-pressure gaseous refrigerant discharged from the compressor, releases heat through heat exchange, and condenses it into a high-pressure liquid refrigerant. The high-pressure liquid refrigerant enters the receiver for storage. After being throttled and depressurized by the expansion valve, it enters the internal piping of the evaporator 4 as a low-temperature, low-pressure mist, then forms a low-temperature, low-pressure gas and finally returns to the compressor 1 through the gas-liquid separator 17. The gas-liquid separator 17 separates the gas-liquid mixture returning from the evaporator 4, preventing liquid refrigerant from entering the compressor 8 and causing liquid slugging.

[0032] Furthermore, an installation plate 10 is provided inside the evaporation chamber 2. The installation plate 10 is horizontally arranged for mounting the auxiliary fan 5. A fan support frame 9 is provided at the bottom of the auxiliary fan 5, and a bracket 20 is provided on the outside of the auxiliary fan 5. The bracket 20 is used to fix the auxiliary fan 5 as a whole. The bottom of the bracket 20 is fixed to the fan support frame 9, and the top of the bracket 20 has four vertical connecting rods. The top of the bracket 20 is fixed to the installation plate 10, so that the auxiliary fan 5 is installed between the bottom of the casing 1 and the installation plate 10 through the bracket 20, forming a stable arrangement. The installation plate 10 is provided with a through-hole structure to cooperate with the output end of the auxiliary fan 5 and connect the auxiliary fan 5 and the interior of the evaporator 4.

[0033] Furthermore, a grid-shaped mesh 12 is provided on the mounting plate 10. The mesh 12 is a small rectangular through hole. The mesh on the mounting plate 10 can rectify the airflow generated by the auxiliary fan 5, making the airflow entering the finned tube of the evaporator 4 more uniform and stable, and improving the heat exchange effect.

[0034] Evaporators 4 are arranged above mounting plate 10 and spaced apart. A drip tray 14 is provided at the bottom of each evaporator 4. The drip tray 14 is fixed inside the casing 1 by a horizontal bracket on the inner wall of the casing 1. The middle of the drip tray 14 is horizontal, with both ends curving outwards to support the inverted V-shaped evaporator 4. An internal cavity is formed within the evaporator 4. To ensure communication between the auxiliary fan 5 and the cavity within the evaporator 4, a ventilation hole 6 is provided in the middle of the horizontal portion of the drip tray 14, aligned with the output end of the auxiliary fan 5. Multiple sets of parallel-arranged finned tubes 21 are arranged inside the evaporator 4. Refrigerant can pass through the finned tubes 21. When the auxiliary fan 5 operates, it delivers a stable airflow to the cavity inside the evaporator 4, improving heat exchange of the refrigerant in the finned tubes 21 and thus enhancing the cooling effect of the indoor unit.

[0035] Furthermore, the inlet and outlet ends of the finned tubes 21 of the evaporator 4 are located on the same side of the evaporator 4. The inlet end of the finned tube 21 is connected to the integrated pipe 16. The refrigerant from both sides of the evaporator 4 flows into the return pipe 23 after being collected by the manifold 22. The return pipe 23 is connected to the gas-liquid separator 17. The liquid refrigerant flows into each finned tube 21 in the evaporator 4 through the integrated pipe 16, and after heat exchange, it forms a low-temperature, low-pressure gaseous refrigerant, which then collects in the return pipe 23 and enters the gas-liquid separator 17 for gas-liquid separation. The separated gaseous refrigerant returns to the compressor 8 for another cycle. One end of the integrated pipe 16 is connected to the expansion valve, and the other end is U-shaped. Two sets of integrated connectors 24 are provided at the end of the U-shape. The integrated connectors 24 have multiple sets of output pipes distributed in a ring for connecting to the inlet ends of each finned tube 21.

[0036] Furthermore, a water-blocking part 13 is provided at the horizontal structure of the water receiving tray 14. The water-blocking part 13 is located on the outer periphery of the ventilation hole 6. The water-blocking part 13 is a baffle structure, which is arranged vertically in a rectangular manner around the ventilation hole 6, forming a water receiving trough with the periphery of the water receiving tray 14. When the heat exchange fins inside the evaporator 4 are exchanging heat, condensate will also be generated inside the evaporator 4. The water receiving tray 14 at the bottom of the evaporator 4 can collect this part of the condensate. A drain pipe 15 is provided at the water receiving trough, which can drain the water accumulated in the water receiving tray 14 in a timely manner.

[0037] It should be noted that, since there are two sets of evaporation components in this embodiment, the integrated pipe 16 and drain pipe 15 in the two sets of evaporators 4 are connected in parallel, which greatly simplifies the piping structure. It should also be noted that, in order to prevent airflow interference between the two sets of auxiliary fans 5, a baffle structure is also arranged between the two sets of auxiliary fans 5 to ensure the independence of operation between the two auxiliary fans 5.

[0038] Furthermore, a heating element 7 is installed at the ventilation hole 6 of the water tray 14. Specifically, the heating element 7 is fixed in the middle of the ventilation hole 6 by a mounting base. There are two sets of heating elements 7. When the auxiliary fan 5 is working, the airflow generated enters the evaporator 4 and passes through the heating element 7. The airflow is heated to a certain extent by the heating element 7. On the one hand, it can heat the air to promote the evaporation of refrigerant in the evaporator 4. On the other hand, it can also prevent the outside of the evaporator 4 from becoming too cold and frosting or freezing. The water baffle 13 on the water tray 14 can also protect the heating element 7 and prevent water accumulation from damaging the heating element 7.

[0039] Furthermore, the circulation chamber 3 is arranged adjacent to the evaporation chamber 2. Two compression systems are arranged within the circulation chamber 3, including a compressor 8, a condenser, a gas-liquid separator 17, and a liquid receiver. Specifically, support frames 25 are installed in the middle and at the bottom of the circulation chamber 3. These support frames 25 rest on rods on the inner wall of the casing 1. The compressor 8 and the gas-liquid separator 17 are arranged on the support frames 25. The compressor 8 is connected sequentially to the condenser, liquid receiver, expansion valve, evaporator 4, and gas-liquid separator 17 via piping. The gas-liquid separator 17 is then connected back to the compressor 8, thus forming a refrigerant circulation path. The piping passes through the partition between the circulation chamber 3 and the evaporation chamber 2, connects to the evaporator 4, and then returns to the compressor 8.

[0040] Furthermore, a heat dissipation hole 18 is provided at the top of the circulation chamber 3, that is, at the top of the chassis 1. The heat dissipation hole 18 can play a good heat dissipation role and prevent the components in the circulation chamber 3 from overheating. Furthermore, a control system 19 is also provided in the circulation chamber 3. The control system 19 is arranged in the upper part of the circulation chamber 3 and located at the front of the chassis 1. The control system 19 includes various integrated components, a control panel and a display screen, and can control the indoor unit.

[0041] The casing 1 is also equipped with door panels around its perimeter to enclose the interior of the indoor unit and enclose the internal structure of the circulation chamber 3 and the evaporation chamber 2. The top of the evaporation chamber 2 is open to allow airflow on the evaporator 4 to circulate effectively.

Claims

1. A novel air-conditioning indoor unit using a refrigerant pump, characterized in that, The device includes a chassis, which contains an evaporation chamber and a circulation chamber. The evaporation chamber contains an evaporator and an auxiliary fan located at the bottom of the evaporator. A vent and a heating element are located between the auxiliary fan and the evaporator. The circulation chamber is located next to the evaporation chamber and contains a compressor. The compressor is connected to the evaporator through a condenser and a liquid receiver.

2. The indoor unit of a fresh air refrigerant pump air conditioner according to claim 1, characterized in that, The evaporation chamber is equipped with an evaporation assembly, which includes the evaporator and the auxiliary fan. There are two sets of the evaporation assembly arranged laterally in the evaporation chamber.

3. A fresh air refrigerant pump indoor unit for air conditioning according to claim 1 or 2, characterized in that, The auxiliary fan is provided with a mounting plate on top, and the mounting plate is provided with a number of mesh holes corresponding to the air outlet position of the auxiliary fan.

4. The indoor unit of a fresh air refrigerant pump air conditioner according to claim 3, characterized in that, The evaporator is provided with a water receiving tray at the bottom, and the water receiving tray is provided with ventilation holes, which correspond to the mesh holes. The heating element is located in the ventilation holes.

5. The indoor unit of a fresh air refrigerant pump air conditioner according to claim 4, characterized in that, The ventilation hole has a water-blocking part on the edge facing the evaporator, and the bottom of the water receiving tray has a drain pipe.

6. The indoor unit of a fresh air refrigerant pump air conditioner according to claim 4, characterized in that, The input end of the evaporator is provided with an integrated tube, which is connected to the input port of the evaporator.

7. A fresh air refrigerant pump indoor unit for air conditioning according to claim 1 or 2, characterized in that, The circulation chamber is equipped with a compression system, which includes the compressor and the condenser. The compression system is provided in two sets and is arranged vertically in the circulation chamber.

8. The indoor unit of a fresh air refrigerant pump air conditioner according to claim 6, characterized in that, The circulating chamber is also equipped with a gas-liquid separator, which is connected to the evaporator and the compressor to form a loop.

9. A fresh air refrigerant pump indoor unit for air conditioning according to claim 1 or 2, characterized in that, The top of the circulation chamber is equipped with heat dissipation holes.

10. A fresh air refrigerant pump indoor unit for air conditioning according to claim 1 or 2, characterized in that, It also includes a control system, which is located in the circulation chamber.

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