Fresh air fluorine pump air conditioning unit

Abstract

This utility model discloses a fresh air refrigerant pump air conditioning unit, belonging to the field of fresh air refrigerant pump air conditioning technology. It includes an indoor unit and an outdoor unit. The indoor unit has a compressor assembly and an evaporator assembly. The compressor assembly includes a compressor and a gas-liquid separator, and the evaporator assembly includes an evaporator connected to the compressor via the gas-liquid separator. The outdoor unit has a refrigerant pump assembly and a condenser assembly. The refrigerant pump assembly includes a refrigerant pump and a liquid receiver, and the condenser assembly includes a condenser connected to the refrigerant pump via the liquid receiver. The output end of the gas-liquid separator is connected to the compressor, and the output end of the refrigerant pump is connected to the evaporator. In this design, the refrigerant pump air conditioning unit adopts a dual-unit mode, simplifying the overall structural layout of the unit, enhancing its adaptability, and enabling it to switch between different modes in response to varying environments.

Description

Technical Field

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

[0002] Traditional precision air conditioners rely on a single compressor cooling mode, resulting in low coefficient of performance (COP) and high energy consumption under low temperature or low load conditions. Ordinary air conditioners cannot operate stably over a wide temperature range (such as -40℃ to +50℃) and have poor adaptability to extreme environments. Some air conditioning components have complex structures, making maintenance difficult.

[0003] For example, Chinese Patent Publication No. CN219913292U, published on October 27, 2023, discloses a utility model entitled "An Integrated Refrigerant Pump Air Conditioning Unit." This application discloses a refrigerant pump air conditioning unit, including an indoor unit containing an evaporator and a refrigerant pump system. Above the indoor unit are a V-shaped condenser and a compressor system. The liquid outlet of the V-shaped condenser connects to the liquid inlet of the evaporator, the gas outlet of the evaporator connects to the gas inlet of the compressor system, and the gas outlet of the compressor system connects to the gas inlet of the V-shaped condenser. The refrigerant pump system is located between the V-shaped condenser and the evaporator. This solution employs an integrated design and prefabricated assembly in the factory, integrating all systems for air conditioning operation in the computer room. This facilitates transportation and rapid on-site deployment, eliminating the need for pipe connections and shortening the on-site construction period. However, this solution concentrates all units on a single unit, resulting in a complex structural layout, poor environmental adaptability, and significant maintenance difficulties in case of malfunctions. Utility Model Content

[0004] This invention overcomes the problems of complex structure and poor adaptability of existing refrigerant pump air conditioning units, and provides a new type of refrigerant pump air conditioning unit. The refrigerant pump air conditioning unit of this solution adopts a dual-unit mode, which makes the overall structure of the unit simple, has strong adaptability, and can adapt to different modes in different environments.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a fresh air refrigerant pump air conditioning unit, including an indoor unit and an outdoor unit. The indoor unit is equipped with a compressor assembly and an evaporator assembly. The compressor assembly includes a compressor and a gas-liquid separator, and the evaporator assembly includes an evaporator connected to the compressor through the gas-liquid separator. The outdoor unit is equipped with a refrigerant pump assembly and a condenser assembly. The refrigerant pump assembly includes a refrigerant pump and a liquid receiver, and the condenser assembly includes a condenser connected to the refrigerant pump through the liquid receiver. The output end of the gas-liquid separator is connected to the compressor, and the output end of the refrigerant pump is connected to the evaporator. In this solution, the compressor assembly and evaporator assembly are arranged in the indoor unit to absorb heat from the room through refrigerant to meet the cooling needs of the room. The refrigerant pump assembly and condenser assembly are arranged in the outdoor unit to release heat to the outdoor air through refrigerant. The gas-liquid separator is arranged in the indoor unit to separate the gas-liquid mixture of refrigerant returning from the evaporator, preventing liquid refrigerant from entering the compressor and causing liquid slugging. The liquid receiver stores the liquid refrigerant after passing through the condenser and can supply refrigerant to the evaporator. This solution's refrigerant pump air conditioning unit adopts a dual-unit mode, which simplifies the overall structure and layout of the unit, makes it highly adaptable, and allows it to switch between different modes to suit different environments.

[0006] Preferably, the indoor unit includes a first chamber and a second chamber arranged adjacent to each other. The first chamber houses the compressor assembly, and the second chamber houses the evaporator assembly. The compressor assembly and evaporator assembly are respectively arranged in the first and second chambers of the indoor unit to avoid mutual interference during operation and to ensure the normal operation of both the compressor assembly and the evaporator assembly.

[0007] Preferably, the evaporator assembly further includes a first fan, and the bottom of the evaporator is provided with a water receiving tray with a first through hole, the output end of the first fan corresponding to the first through hole. The output end of the first fan can provide a stable airflow to the evaporator through the first through hole on the water receiving tray, improving the heat exchange efficiency of the evaporator and thus improving the cooling effect; the water receiving tray can receive and discharge condensate generated outside the evaporator.

[0008] Preferably, the first fan is provided with a fixing plate on top, and the fixing plate has a second through hole. A rectifier plate is also provided on the fixing plate corresponding to the second through hole. The fixing plate is used to install and fix the first fan. The second through hole on the fixing plate allows the first fan to connect to the interior of the evaporator. The rectifier plate on the fixing plate can rectify the airflow produced by the first fan, ensuring a uniform and stable airflow within the evaporator and improving the heat exchange efficiency of the evaporator.

[0009] Preferably, the front side of the indoor unit is provided with a door panel structure corresponding to the first and second chambers. The door panel structure can be opened and closed. When opened, it can be used to maintain or adjust the structure of the indoor unit. When closed, it can seal and protect the structure of the indoor unit, ensuring the normal operation of the indoor unit.

[0010] Preferably, a first electrical control box is also provided in the first cavity, and the first electrical control box is located on the front panel of the indoor unit. The first electrical control box is used to regulate the working status of the indoor unit, and its location on the front of the indoor unit facilitates user operation.

[0011] Preferably, the water receiving tray is equipped with a heating element at the through hole and a drain hole. The heating element prevents frost or ice from forming inside the evaporator, and the drain hole on the water receiving tray allows condensate generated outside the evaporator to be drained in a timely manner.

[0012] Preferably, the outdoor unit includes a bracket, and the refrigerant pump assembly and the condenser assembly are mounted on the bracket. The arrangement of the refrigerant pump assembly and the condenser assembly on the bracket to form the outdoor unit simplifies the outdoor unit structure, reduces its size, and facilitates maintenance.

[0013] Preferably, the condenser assembly further includes a second fan. The condenser is V-shaped and has an internal cavity. The second fan is located at the top of the condenser and communicates with the cavity. When the second fan is operating, it can expel the latent heat generated in the internal cavity of the condenser to the outside, ensuring the condensing efficiency of the condenser.

[0014] Preferably, the bracket is also equipped with a second electrical control box. The second electrical control box is used to regulate the operating status of the outdoor unit.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) It adopts the dual-mode operation of indoor and outdoor units, which improves the cooling efficiency of the fresh air refrigerant pump air conditioning unit and simplifies the design of the unit; (2) It has multiple modes of operation, which can adapt to more environments and effectively reduce the energy consumption of the refrigerant pump air conditioning unit; (3) It is suitable for refrigerant pump precision air conditioning systems in scenarios such as data centers, communication base stations, and laboratories. Through the refrigerant pump circulation and the compressor working together, it can achieve high-precision temperature and humidity control and high-efficiency energy saving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of this utility model.

[0017] Figure 2 This is a schematic diagram of part of the internal structure of this utility model.

[0018] Figure 3 This is an isometric view of the rear internal structure of this utility model.

[0019] Figure 4 This is a side view of the internal structure of this utility model.

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

[0021] Figure 6 This is an isometric view of the evaporator structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the outdoor unit structure of this utility model.

[0023] Figure 8 This is a schematic diagram showing the internal structure connection between the indoor unit and the outdoor unit of this utility model.

[0024] In the diagram: 1. Indoor unit, 2. Compressor, 3. Gas-liquid separator, 4. Evaporator, 5. Outdoor unit, 6. Refrigerant pump, 7. Receiver, 8. Condenser, 9. First chamber, 10. Second chamber, 11. First fan, 12. Drain tray, 13. First through hole, 14. Fixing plate, 15. Second through hole, 16. Rectifier plate, 17. First electrical control box, 18. Heating assembly, 19. Drain hole, 20. Bracket, 21. Second fan, 22. Second electrical control box, 23. Support frame, 24. Dryer filter, 25. Support rod, 26. Bracket, 27. Finned tube, 28. Diverter pipe, 29. Manifold, 30. Support section, 31. Refrigerant pump branch, 32. Compressor branch, 33. Check valve, 34. Fan shroud. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0026] Example: Figures 1 to 8 The illustrated new type of refrigerant pump air conditioning unit includes an indoor unit 1 and an outdoor unit 5. The indoor unit 1 has a box-like structure and includes two chambers: a first chamber 9 and a second chamber 10. A compressor assembly is arranged in the first chamber 9, and an evaporator assembly is arranged in the second chamber 10. Specifically, there are two sets of both the compressor and evaporator assemblies. In the first chamber 9, the two sets of compressor assemblies are arranged vertically; in the second chamber 10, the two sets of evaporator assemblies are arranged horizontally adjacent to each other. The outdoor unit 5 is composed of a rod-type support frame 20. Similarly, two sets of refrigerant pump assemblies and two sets of condenser assemblies are arranged in a coordinated manner.

[0027] Furthermore, the compressor assembly includes a compressor 2 and a gas-liquid separator 3, the evaporator assembly includes an evaporator 4, the refrigerant pump assembly includes a refrigerant pump 6 and a liquid receiver 7, and the condenser assembly includes a condenser 8. In this embodiment, the fresh air refrigerant pump air conditioning unit has multiple modes. When the outdoor temperature is greater than 25°C, the compressor cooling mode is used, in which only the compressor 2 operates. When the outdoor temperature is lower than 15°C, the refrigerant pump cooling mode is used, in which only the refrigerant pump 6 operates. When the outdoor temperature is between 20°C and 25°C, the dual-engine cooling mode of compressor 2 and refrigerant pump 6 is used, in which both compressor 2 and refrigerant pump 6 operate. This intelligent operation mode further optimizes energy utilization efficiency and reduces energy waste.

[0028] Specifically, in compressor 2 refrigeration mode, the output of compressor 2 is connected to the input of condenser 8 via a pipeline. The output of condenser 8 is connected to receiver 7 via a pipeline. The output of receiver 7 is connected to the input of evaporator 4 via an expansion valve (not shown in the figure) and a pipeline. The output of evaporator 4 is connected to the input of gas-liquid separator 3 via a pipeline. Finally, the output of gas-liquid separator 3 is connected to the input of compressor 2 via a pipeline, forming a closed-loop refrigerant circulation path. In refrigerant pump 6 refrigeration mode, the output of refrigerant pump 6 is connected to the input of evaporator 4 via a pipeline and an expansion valve. The output of evaporator 4 is connected to the input of condenser 8 via a pipeline. The output of condenser 8 is connected to receiver 7 via a pipeline. Finally, the output of receiver 7 is connected to the input of refrigerant pump 6 via a pipeline, forming a closed-loop refrigerant circulation path.

[0029] Specifically, support frames 23 are provided in the middle and bottom positions of the first chamber 9. The upper compressor assembly is arranged on the support frame 23 in the middle position, and the lower compressor assembly is arranged on the support frame 23 at the bottom position. A sight glass and a dryer filter 24 are also provided on the support frame 23 at the bottom position of the first chamber 9. The sight glass and the dryer filter 24 are arranged on the pipeline where the compressor 2 and the gas-liquid separator 3 are located. The dryer filter 24 can dry the gaseous refrigerant separated by the gas-liquid separator 3 and finally supply it to the compressor 2 to prevent liquid from entering the compressor 2 and causing liquid slugging, which would damage the structure of the compressor 2.

[0030] Furthermore, a partition structure is provided between the first chamber 9 and the second chamber 10 to separate the two chambers, and the evaporator assembly is arranged in the second chamber 10. The evaporator assembly also includes a first fan 11, which is arranged at the bottom of the second chamber 10. Specifically, a fixing plate 14 is provided near the bottom of the second chamber 10. Since there are two sets of evaporator assemblies, there are two sets of fixing plates 14 and two sets of first fans 11. In this embodiment, only one set of evaporator assemblies is described. The fixing plate 14 is fixedly arranged in the second chamber 10 near the bottom, reserving space for the installation of the first fan 11, which is installed at the bottom of the fixing plate 14. A support rod 25 is provided at the bottom of the second chamber 10. A bracket 26 is provided on the outside of the first fan 11. The bracket 26 has four connecting frames evenly distributed around its circumference. The bottom of the four connecting frames is arranged horizontally and connected together radially inward to support the first fan 11. The bottom of the bracket 26 is mounted on the support rod 25. The top of the four connecting frames is vertically connected to the bottom of the fixing plate 14. The first fan 11 is installed in the middle of the bracket 26, with the output port of the first fan 11 facing upward, i.e., towards the location of the fixing plate 14. A second through hole 15 is provided on the fixing plate 14, corresponding to the output end of the first fan 11. The second through hole 15 is a circular through hole on the fixing plate 14 and is adapted and fixedly connected to the output end of the first fan 11 to improve the installation strength of the first fan 11. A partition plate is provided between the two sets of first fans 11 to separate the installation space between the two sets of first fans 11, ensuring the independence of the operation of the two sets of first fans 11 and preventing airflow interference when the two sets of first fans 11 are working.

[0031] An evaporator 4 is arranged at a certain interval above the fixed plate 14. The evaporator 4 has an inverted V-shaped structure. The top of the evaporator 4 is fixedly connected to the top of the indoor unit 1. At this position, the top of the indoor unit 1 has a through-hole structure to facilitate the flow of heat exchange gas (cooling gas) inside the evaporator 4 (the internal cavity formed by the inverted V-shaped evaporator 4 body). A water receiving tray 12 is arranged at the bottom of the evaporator 4. The middle part of the water receiving tray 12 has a planar structure, and the two sides of the water receiving tray 12 are upwardly inclined support parts to support the inverted V-shaped evaporator 4 body on both sides. A first through hole 13 is provided in the middle of the water receiving tray 12. The position of the first through hole 13 corresponds to the position of the second through hole 15 on the fixed plate 14. The alignment of the first through hole 13 and the second through hole 15 facilitates the airflow output by the first fan 11 to enter the inverted V-shaped cavity inside the evaporator 4 for heat exchange with the finned tubes 27 inside the evaporator 4.

[0032] It should be noted that protrusions are provided at the outer edge of the drip tray 12 and the outer edge of the first through hole 13. These protrusions are thin, upward-curving plates designed to prevent condensate collected on the drip tray 12 from flowing out. A drain hole 19 is also provided on the drip tray 12, which, through a pipe, promptly drains accumulated water from the drip tray 12, preventing water from flowing into other internal structures of the indoor unit 1 and damaging the equipment. The drain pipes in the two sets of evaporators 4 are arranged in parallel, effectively simplifying the piping structure of the indoor unit 1.

[0033] Furthermore, several finned tubes 27 are installed on the main body of the evaporator 4. The inlet and outlet ends of the finned tubes 27 are located on the same side of the evaporator 4. The inlet ends of all the finned tubes 27 are connected through branch pipes 28. The outlet ends of the branch pipes 28 are U-shaped and are used to connect to the main bodies of the evaporator 4 on both sides respectively. The outlet ends of the branch pipes 28 can be connected to the inlet ends of all the finned tubes 27 through pipe fittings with multiple holes, or they can be connected to the inlet ends of all the finned tubes 27 simultaneously through a single main pipe. The outlet ends of all the finned tubes 27 are connected through a manifold 29 (one on each of the two main bodies of the evaporator 4), thereby realizing the circulation and heat exchange of refrigerant in the evaporator 4. Similarly, the main branch pipes and main manifolds on the two sets of evaporators 4 are also arranged in parallel to simplify the piping structure of the indoor unit 1.

[0034] It should be noted that a heating element 18 is also provided inside the first through hole 13. Specifically, the heating element 18 is a heating plate. The first through hole 13 is directly opposite the output end of the first fan 11, so the heating element 18 is also directly opposite the output end of the first fan 11. When the first fan 11 is working, the airflow generated enters the evaporator 4 and passes through the heating element 18. The airflow is heated to a certain extent by the heating element 18. On the one hand, it can heat the air to promote the evaporation of the 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 icing.

[0035] Furthermore, a rectifier plate 16 is also provided on the fixed plate 14. Specifically, the rectifier plate 16 is arranged at the position of the second through hole 15 on the fixed plate 14. The rectifier plate 16 on the fixed plate 14 can rectify the airflow produced by the first fan 11, ensuring that a uniform and stable airflow can be formed in the evaporator 4, thereby improving the heat exchange efficiency of the evaporator 4.

[0036] Furthermore, a first electrical control box 17 is arranged within the first chamber 9 of the indoor unit 1. The first electrical control box 17 is located in the upper part of the first chamber 9 and at the front of the entire indoor unit 1. The second electrical control box 17 includes an integrated circuit, a control panel, and a display screen, and can monitor and control the operating status of the indoor unit 1. In addition, ventilation holes are provided at the top of the first chamber 9 to dissipate heat and prevent overheating of the internal structure of the first chamber 9, which could lead to malfunctions. A door panel structure (not shown in the figure) is also provided at the front of the indoor unit 1. The door panel structure is connected to the front of the indoor unit by means of hinges. The door panel structure is provided at the front of both the first chamber 9 and the second chamber 10. When the door panel structure is opened, the internal structure of the first chamber 9 and the second chamber 10 can be inspected and maintained. When the door panel structure is closed, the internal structure of the first chamber 9 and the second chamber 10 can be protected.

[0037] In the outdoor unit 5, the condenser 8 is arranged in a V-shape. Similarly, the condenser 8 also has several finned tubes inside. The connection structure of the finned tubes in the condenser 8 is similar to that in the evaporator 4, and will not be described again here. The output end of the finned tubes in the condenser 8 is connected to the liquid receiver 7, and the output end of the liquid receiver 7 is connected to the refrigerant pump 6. A second fan 21 is installed at the top of the outdoor unit 5. The output end of the second fan 21 faces outwards from the outdoor unit 5. The second fan 21 connects to the cavity structure formed by the internal V-shaped body of the condenser 8. When the second fan 21 is working, it can send the latent heat generated inside the cavity of the condenser 8 to the outside, ensuring the condensing efficiency of the condenser 8. A fan shroud 34 is also installed at the output end of the second fan 21. Both the second fan 21 and the fan shroud 34 are circular structures, and the fan shroud 34 is detachably fixed to the output port of the second fan 21. The shroud 34 is a shroud structure with grid holes woven from metal lines. On the one hand, it can protect the interior of the second fan 21 and prevent external objects from falling into the second fan 21. On the other hand, it can also ensure the airflow output effect of the second fan 21.

[0038] A support section 30 is provided on the bracket 20, which supports both sides of the V-shaped main body of the condenser 8. The bracket 20 also includes a refrigerant pump mounting plate and a liquid receiver mounting plate to securely install the refrigerant pump 6 and the liquid receiver 7. A second electrical control box 22 is also provided on the bracket 20, directly mounted on it. The outer side of the second electrical control box 22 is flush with the overall exterior of the outdoor unit 5 to prevent it from protruding and being damaged by collision.

[0039] It should be noted that, as Figure 8As shown, a refrigerant pump branch line 31 is connected in parallel to the pipeline where compressor 2 is located, and a compressor branch line 32 is connected in parallel to the pipeline where refrigerant pump 6 is located. One-way valves 33 are installed on both refrigerant pump branch line 31 and compressor branch line 32 to prevent refrigerant backflow. When operating in compressor 2 refrigeration mode, the overall refrigerant flow path is: compressor 2 → condenser 8 → compressor branch line 32 → evaporator 4 → compressor 2; when operating in refrigerant pump 6 refrigeration mode, the overall refrigerant flow path is: refrigerant pump 6 → evaporator 4 → refrigerant pump branch line 31 → condenser 8 → refrigerant pump 6.

Claims

1. A novel air-conditioning unit using a refrigerant pump, characterized in that, include The indoor unit includes a compressor assembly and an evaporator assembly. The compressor assembly includes a compressor and a gas-liquid separator, and the evaporator assembly includes an evaporator connected to the compressor via the gas-liquid separator. The outdoor unit is equipped with a refrigerant pump assembly and a condenser assembly. The refrigerant pump assembly includes a refrigerant pump and a liquid receiver, and the condenser assembly includes a condenser. The condenser is connected to the refrigerant pump through the liquid receiver. The gas-liquid separator output is connected to the compressor, and the refrigerant pump output is connected to the evaporator.

2. The fresh air refrigerant pump air conditioning unit according to claim 1, characterized in that, The indoor unit includes a first chamber and a second chamber arranged adjacent to each other. The first chamber houses the compressor assembly, and the second chamber houses the evaporator assembly.

3. A fresh air refrigerant pump air conditioning unit according to claim 1 or 2, characterized in that, The evaporator assembly further includes a first fan, and the bottom of the evaporator is provided with a water receiving tray with a first through hole, and the output end of the first fan corresponds to the first through hole.

4. The fresh air refrigerant pump air conditioning unit according to claim 3, characterized in that, The first fan is provided with a fixing plate on the top, and a second through hole is provided on the fixing plate. A rectifier plate is provided on the fixing plate at the position corresponding to the second through hole.

5. A fresh air refrigerant pump air conditioning unit according to claim 2, characterized in that, The front side of the indoor unit is provided with a door panel structure corresponding to the first chamber and the second chamber.

6. A fresh air refrigerant pump air conditioning unit according to claim 5, characterized in that, The first chamber is also equipped with a first electrical control box, which is located on the front panel of the indoor unit.

7. A fresh air refrigerant pump air conditioning unit according to claim 3, characterized in that, A heating element is provided at the through hole of the water receiving tray, and a drain hole is provided on the water receiving tray.

8. A fresh air refrigerant pump air conditioning unit according to any one of claims 1, 2, 5, or 6, characterized in that, The outdoor unit includes a bracket, and the refrigerant pump assembly and the condenser assembly are mounted on the bracket.

9. A fresh air refrigerant pump air conditioning unit according to claim 8, characterized in that, The condenser assembly further includes a second fan. The condenser is V-shaped and has an internal cavity. The second fan is located at the top of the condenser and communicates with the cavity.

10. A fresh air refrigerant pump air conditioning unit according to claim 8, characterized in that, The bracket is also equipped with a second electrical control box.

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