Heat pump air conditioner

Abstract

The present application relates to air conditioning technical field, specifically to a kind of heat pump air conditioner.The present application aims to solve the problem of unsatisfactory dehumidification effect.For this purpose, the heat pump air conditioner of the present application includes compressor, outdoor heat exchanger, ejector, gas-liquid separator, first indoor heat exchanger, second indoor heat exchanger and vortex tube, the first port of compressor exhaust port and outdoor heat exchanger is communicated, the second port of outdoor heat exchanger and ejector inlet is communicated, the outlet of ejector and the inlet of gas-liquid separator are communicated, the gas-liquid separator exhaust port and compressor suction port are communicated, the liquid outlet of gas-liquid separator and the inlet of vortex tube are communicated, the hot end outlet and cold end outlet of vortex tube are communicated with the first port of first indoor heat exchanger and the first port of second indoor heat exchanger respectively, and the second indoor heat exchanger and the first indoor heat exchanger are sequentially arranged along the air outlet direction.By using ejector and vortex tube cascade, non-cooling dehumidification can be realized, and the dehumidification effect can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically to a heat pump air conditioner. Background Technology

[0002] Traditional air conditioners dehumidify the air by lowering the evaporation temperature. However, the temperature of the dehumidified air is relatively low, and directly supplying air to it would affect the user experience. Therefore, it is necessary to raise the supply air temperature by heating after dehumidification.

[0003] Currently, the common technical solution for increasing the supply air temperature during dehumidification is to set up a bypass pipeline and a reheat heat exchanger. The refrigerant discharged from the condenser is diverted to the reheat heat exchanger. Under dehumidification conditions, the indoor return air is cooled and dehumidified by the evaporator, and then passes through the reheat heat exchanger to increase its temperature before being sent into the room.

[0004] Although this technical solution improves the return air temperature to some extent, the supply air temperature is still not ideal because the refrigerant discharged from the condenser is at a low temperature and the heat is insufficient to support the reheating of the air.

[0005] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] To address at least one of the aforementioned problems in the prior art, namely, to resolve the issue that using a bypass pipe to divert the refrigerant discharged from the condenser to the reheat heat exchanger during dehumidification is not effective in increasing the supply air temperature, this application provides a heat pump air conditioner, including a compressor, an outdoor heat exchanger, an ejector, a gas-liquid separator, a first indoor heat exchanger, a second indoor heat exchanger, and a vortex tube.

[0007] The compressor's exhaust port is connected to the first port of the outdoor heat exchanger, the outdoor heat exchanger's second port is connected to the ejector's inlet, the ejector's outlet is connected to the gas-liquid separator's inlet, the gas-liquid separator's exhaust port is connected to the compressor's suction port, the gas-liquid separator's drain port is connected to the vortex tube's inlet, the vortex tube's hot end outlet is connected to the first port of the first indoor heat exchanger, and the vortex tube's cold end outlet is connected to the first port of the second indoor heat exchanger. The second indoor heat exchanger and the first indoor heat exchanger are arranged sequentially along the air outlet direction.

[0008] The heat pump air conditioner of this application, by employing an ejector and a vortex tube superimposed, can utilize the ejector to create the preconditions for the refrigerant to enter the vortex tube. On the one hand, it enables the refrigerant at a lower temperature to be discharged through the cold end outlet of the vortex tube to dehumidify the indoor air. On the other hand, the heat of the refrigerant discharged through the hot end outlet of the vortex tube reheats the dehumidified air, ultimately achieving dehumidification without cooling and ensuring the dehumidification effect.

[0009] In the preferred embodiment of the above-mentioned heat pump air conditioner, the second port of the first indoor heat exchanger is connected to the ejector port of the ejector or the inlet of the gas-liquid separator.

[0010] The above setup allows for the recovery and recycling of refrigerant in the first indoor heat exchanger, improving the operating efficiency of the air conditioner.

[0011] In the preferred embodiment of the above-mentioned heat pump air conditioner, the outlet of the ejector is also connected to the second port of the first indoor heat exchanger, the first port of the first indoor heat exchanger is also connected to the inlet of the gas-liquid separator, a first valve body is provided on the pipeline between the outlet of the ejector and the inlet of the gas-liquid separator, a second valve body is provided on the pipeline between the second port of the first indoor heat exchanger and the ejector port, and a third valve body is provided on the pipeline between the outlet of the ejector and the second port of the first indoor heat exchanger. One end of the third valve body is connected between the outlet of the ejector and the first valve body, and the other end of the third valve body is connected between the second port of the first indoor heat exchanger and the second valve body.

[0012] The above configuration, by setting up a first valve body, a second valve body, and a third valve body, allows for efficient operation of refrigeration and dehumidification through switching between the valve bodies.

[0013] In the preferred embodiment of the above-mentioned heat pump air conditioner, a fourth valve body is provided on the pipeline between the hot end outlet of the vortex tube and the first port of the first indoor heat exchanger.

[0014] In the preferred embodiment of the above-mentioned heat pump air conditioner, the second port of the second indoor heat exchanger is connected to the ejector port of the ejector or the inlet of the gas-liquid separator.

[0015] The above setup allows for the recovery and recycling of refrigerant in the second indoor heat exchanger, improving the efficiency of air conditioning operation.

[0016] In the preferred embodiment of the above-mentioned heat pump air conditioner, a second throttling element is provided on the pipe between the second port of the second indoor heat exchanger and the ejector inlet, or

[0017] A second throttling element is provided on the pipeline between the second port of the second indoor heat exchanger and the inlet of the gas-liquid separator.

[0018] The second throttling element can adjust the amount of refrigerant entering the second chamber heat exchanger, thereby adjusting the amount of refrigerant at the cold end outlet and the hot end outlet of the vortex tube, thus regulating the cooling and dehumidification capacity and reheat capacity, which helps to improve the dehumidification effect without cooling.

[0019] In the preferred embodiment of the above-mentioned heat pump air conditioner, the drain port of the gas-liquid separator is also connected to the first port of the second indoor heat exchanger, and a first throttling element is provided on the pipeline between the drain port of the gas-liquid separator and the first port of the second indoor heat exchanger.

[0020] The above configuration, by connecting the drain port of the gas-liquid separator to the first port of the second indoor heat exchanger, can improve the efficiency of air conditioning cooling operation.

[0021] In the preferred technical solution of the above-mentioned heat pump air conditioner, the drain port of the gas-liquid separator, the inlet of the vortex tube and the first port of the second indoor heat exchanger are respectively connected to the three ports of the electrically controlled three-way valve, and the first throttling element is disposed on the pipeline between the electrically controlled three-way valve and the first port of the second indoor heat exchanger.

[0022] In the preferred embodiment of the above-mentioned heat pump air conditioner, a fifth valve body is provided on the pipeline between the cold end outlet of the vortex tube and the first port of the second indoor heat exchanger.

[0023] In the preferred embodiment of the above-mentioned heat pump air conditioner, the heat pump air conditioner further includes a regenerator, wherein a first port of the regenerator is connected to a second port of the outdoor heat exchanger, the second port of the regenerator is connected to the inlet of the ejector, a third port of the regenerator is connected to the exhaust port of the gas-liquid separator, and a fourth port of the regenerator is connected to the suction port of the compressor, wherein a first heat exchange flow path is formed between the first port and the second port of the regenerator, and a second heat exchange flow path is formed between the third port and the fourth port of the regenerator; and / or

[0024] The heat pump air conditioner also includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, the intake port of the compressor, the first port of the outdoor heat exchanger, and the exhaust port of the gas-liquid separator. The refrigerant of the heat pump air conditioner is carbon dioxide or a mixed refrigerant including carbon dioxide. Attached Figure Description

[0025] This application will now be described with reference to the accompanying drawings and in conjunction with a carbon dioxide heat pump air conditioner. In the drawings:

[0026] Figure 1 This is a system diagram of the heat pump air conditioner of this application;

[0027] Figure 2 This is a flowchart of the cooling mode operation of the heat pump system in this application;

[0028] Figure 3 A flowchart illustrating the dehumidification mode of the heat pump system in this application;

[0029] Figure 4This is a flowchart illustrating the heating mode of the heat pump system in this application.

[0030] List of reference numerals

[0031] 1. Compressor; 2. Outdoor heat exchanger; 3. Ejector; 4. Gas-liquid separator; 5. First indoor heat exchanger; 6. Second indoor heat exchanger; 7. Vortex tube; 8. Four-way valve; 9. Regenerator; 10. First throttling element; 11. Second throttling element; 12. Third throttling element; 13. First valve body; 14. Second valve body; 15. Third valve body; 16. Fourth valve body; 17. Fifth valve body; 18. Sixth valve body; 19. Seventh valve body; 20. Eighth valve body; 21. Ninth valve body; 22. Tenth valve body; 23. Electrically controlled three-way valve. Detailed Implementation

[0032] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although this embodiment is described in conjunction with a carbon dioxide heat pump air conditioner, this is not intended to limit the scope of protection of this application. Those skilled in the art can apply this application to other application scenarios without departing from the principles of this application. For example, this application can also be applied to air conditioning systems using other refrigerants such as R134 and R32.

[0033] It should be noted that in the description of this application, terms such as "upper," "lower," "left," and "right," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are used merely for descriptive purposes and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," "fourth," "fifth," "sixth," "seventh," "eighth," "ninth," and "tenth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in the description of this application, "a plurality of" refers to at least two.

[0034] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] First refer to Figure 1 The present application describes the carbon dioxide heat pump air conditioner.

[0036] like Figure 1 As shown, to address the issue of unsatisfactory results in increasing the supply air temperature during dehumidification by using a bypass pipe to divert the refrigerant discharged from the condenser to the reheat heat exchanger, the carbon dioxide heat pump air conditioner of this application includes a compressor 1, an outdoor heat exchanger 2, an ejector 3, a gas-liquid separator 4, a first indoor heat exchanger 5, a second indoor heat exchanger 6, and a vortex tube 7. The exhaust port of the compressor 1 is connected to the first port of the outdoor heat exchanger 2, the second port of the outdoor heat exchanger 2 is connected to the inlet of the ejector 3, the outlet of the ejector 3 is connected to the inlet of the gas-liquid separator 4, the exhaust port of the gas-liquid separator 4 is connected to the suction port of the compressor 1, the drain port of the gas-liquid separator 4 is connected to the inlet of the vortex tube 7, the hot end outlet of the vortex tube 7 is connected to the first port of the first indoor heat exchanger 5, and the cold end outlet of the vortex tube 7 is connected to the first port of the second indoor heat exchanger 6. The second indoor heat exchanger 6 and the first indoor heat exchanger 5 are arranged sequentially along the air outlet direction.

[0037] Thus, during the dehumidification process, the high-temperature, high-pressure gaseous refrigerant discharged from compressor 1 passes through outdoor heat exchanger 2 and becomes a medium-temperature, medium-pressure gas-liquid mixture, which then enters ejector 3. The outlet of ejector 3 sprays this medium-temperature, medium-pressure gas-liquid mixture into gas-liquid separator 4. The gaseous refrigerant flows back to compressor 1 from the exhaust port of gas-liquid separator 4, while the liquid refrigerant enters vortex tube 7 from the drain port of gas-liquid separator 4. In vortex tube 7, the liquid refrigerant splits into two parts. After heat exchange, the high-temperature refrigerant is discharged from the hot end outlet to the first indoor heat exchanger 5, and the low-temperature refrigerant is discharged from the cold end outlet to the second indoor heat exchanger 6. Indoor air passes sequentially through the second indoor heat exchanger 6 and the first indoor heat exchanger 5. When passing through the second indoor heat exchanger 6, heat exchange occurs with the low-temperature refrigerant, causing moisture to be released from the air. When passing through the first indoor heat exchanger 5, heat exchange occurs with the high-temperature refrigerant, raising the air temperature. Ultimately, dehumidification is achieved without cooling the air.

[0038] The heat pump air conditioner of this application, by employing an ejector 3 and a vortex tube 7 in superposition, can utilize the ejector 3 to create the preconditions for the refrigerant to enter the vortex tube 7. On the one hand, it enables the refrigerant at a lower temperature to be discharged through the cold end outlet of the vortex tube 7 to dehumidify the indoor air. On the other hand, the heat of the refrigerant discharged through the hot end outlet of the vortex tube 7 is used to reheat the dehumidified air, ultimately achieving dehumidification without cooling and ensuring the dehumidification effect.

[0039] The following reference Figures 1 to 4 A preferred embodiment of this application will be described.

[0040] like Figure 1 As shown, in a preferred embodiment, the carbon dioxide heat pump air conditioner includes a compressor 1, a four-way valve 8, an outdoor heat exchanger 2, a regenerator 9, an ejector 3, a gas-liquid separator 4, a first indoor heat exchanger 5, a second indoor heat exchanger 6, and a vortex tube 7.

[0041] The discharge port of compressor 1 is connected to the first port of four-way valve 8, and the second port of four-way valve 8 is connected to the first port of outdoor heat exchanger 2. Figure 1 The right-hand port of the outdoor heat exchanger 2 is connected to the second port of the outdoor heat exchanger 2. Figure 1 The left port of the middle section) and the first port of the regenerator 9 ( Figure 1 The upper left port of the regenerator 9 is connected to the second port of the regenerator 9. Figure 1 The lower left port is connected to the inlet of ejector 3, the outlet of ejector 3 is connected to the inlet of gas-liquid separator 4, and the exhaust port of gas-liquid separator 4 is connected to the third port of regenerator 9. Figure 1 The lower right port is connected to the regenerator 9, and the fourth port of the regenerator 9 is connected to it. Figure 1 The upper right port is connected to the third port of the four-way valve 8, and the fourth port of the four-way valve 8 is connected to the suction port of the compressor 1. The discharge port of the gas-liquid separator 4 is connected to the inlet of the vortex tube 7, and the hot end outlet of the vortex tube 7 ( Figure 1 The upper middle port) and the first port of the first indoor heat exchanger 5 ( Figure 1 The right-hand port of the vortex tube 7 is connected to the cold end outlet of the vortex tube 7. Figure 1 The lower middle port) and the first port of the second indoor heat exchanger 6 Figure 1 The right-hand port of the first indoor heat exchanger 5 is connected to the second port of the first indoor heat exchanger 5. Figure 1 The left port of the middle chamber and the second port of the second indoor heat exchanger 6 ( Figure 1 The left port of the middle section is connected to the ejector port of the ejector 3.

[0042] The second indoor heat exchanger 6 and the first indoor heat exchanger 5 are arranged sequentially along the air outlet direction. A first heat exchange flow path is formed between the first port and the second port of the regenerator 9, and a second heat exchange flow path is formed between the third port and the fourth port of the regenerator 9. The second heat exchange flow path can exchange heat with the first heat exchange flow path.

[0043] Furthermore, the outlet of ejector 3 is also connected to the second port of the first indoor heat exchanger 5, and the first port of the first indoor heat exchanger 5 is also connected to the inlet of the gas-liquid separator 4. A first valve body 13 is installed on the pipeline between the outlet of ejector 3 and the inlet of gas-liquid separator 4, and a second valve body 14 is installed on the pipeline between the second port of the first indoor heat exchanger 5 and the ejector port of ejector 3. The first valve body 13 and the second valve body 14 are preferably solenoid valves. A third valve body 15 is installed on the pipeline between the outlet of ejector 3 and the second port of the first indoor heat exchanger 5. One end of the third valve body 15 is connected between the outlet of ejector 3 and the first valve body 13, and the other end of the third valve body 15 is connected between the second port of the first indoor heat exchanger 5 and the second valve body 14. The third valve body 15 is preferably a one-way valve, which is configured to open when the refrigerant flows from the outlet of ejector 3 to the second port of the first indoor heat exchanger 5.

[0044] Furthermore, the drain port of the gas-liquid separator 4 is also connected to the first port of the second indoor heat exchanger 6, and a first throttling element 10 is provided on the pipeline between the drain port of the gas-liquid separator 4 and the first port of the second indoor heat exchanger 6. Preferably, the drain port of the gas-liquid separator 4, the inlet of the vortex tube 7, and the first port of the second indoor heat exchanger 6 are respectively connected to the three ports of the electrically controlled three-way valve 23, and the first throttling element 10 is preferably an electronic expansion valve, which is provided on the pipeline between the electrically controlled three-way valve 23 and the first port of the second indoor heat exchanger 6.

[0045] Furthermore, a fourth valve body 16 is installed on the pipeline between the hot end outlet of the vortex tube 7 and the first port of the first indoor heat exchanger 5, and a fifth valve body 17 is installed on the pipeline between the cold end outlet of the vortex tube 7 and the first port of the second indoor heat exchanger 6. One end of the fourth valve body 16 is connected to the hot end outlet of the vortex tube 7, and the other end is connected between the first port of the first indoor heat exchanger 5 and the inlet of the gas-liquid separator 4. One end of the fifth valve body 17 is connected to the cold end outlet of the vortex tube 7, and the other end is connected between the first port of the second indoor heat exchanger 6 and the first throttling element 10. Preferably, both the fourth valve body 16 and the fifth valve body 17 are one-way valves, wherein the fourth valve body 16 is configured to open when the refrigerant flows from the hot end outlet of the vortex tube 7 to the first port of the first indoor heat exchanger 5, and the fifth valve body 17 is configured to open when the refrigerant flows from the cold end outlet of the vortex tube 7 to the first port of the second indoor heat exchanger 6.

[0046] Still refer to Figure 1A second throttling element 11 is installed on the pipeline between the second port of the second indoor heat exchanger 6 and the injection port of the ejector 3. The second port of the second indoor heat exchanger 6 is connected to the first port of the first indoor heat exchanger 5 via a pipeline. A sixth valve body 18 is installed on this pipeline. One end of the sixth valve body 18 is connected between the second port of the second heat exchanger and the second throttling element 11, and the other end of the sixth valve body 18 is connected between the first port of the first heat exchanger and the fourth valve body 16. Preferably, the second throttling element 11 is an electronic expansion valve, and the sixth valve body 18 is a one-way valve. The one-way valve is configured to open when the refrigerant flows from the second port of the second indoor heat exchanger 6 to the first port of the first indoor heat exchanger 5.

[0047] Furthermore, a seventh valve body 19 is provided on the pipeline between the second port of the regenerator 9 and the inlet of the ejector 3. The seventh valve body 19 is preferably a one-way valve and is configured to open when the refrigerant flows from the second port of the regenerator 9 to the inlet of the ejector 3.

[0048] Furthermore, the first port of the first indoor heat exchanger 5 is connected to the second port of the regenerator 9 via a pipeline, on which an eighth valve body 20 and a third throttling element 12 are installed. One end of the eighth valve body 20 is connected between the second port of the first indoor heat exchanger 5 and the second valve body 14, and the other end is connected to the first port of the third throttling element 12. The second port of the third throttling element 12 is connected between the second port of the regenerator 9 and the seventh valve body 19. Preferably, the third throttling element 12 is an electronic expansion valve, and the eighth valve body 20 is a one-way valve. The eighth valve body 20 is configured to be open when the refrigerant flows from the first port of the first indoor heat exchanger 5 to the second port of the regenerator 9.

[0049] Furthermore, a ninth valve body 21 is provided on the pipeline between the fourth port of the regenerator 9 and the third interface of the four-way valve 8. The ninth valve body 21 is preferably a one-way valve. The ninth valve body 21 is configured to conduct when the refrigerant flows from the fourth port of the regenerator 9 to the third interface of the four-way valve 8.

[0050] Furthermore, the third and fourth ports of the regenerator 9 are connected by a pipeline, and a tenth valve body 22 is installed on this pipeline. One end of the tenth valve body 22 is connected between the ninth valve body 21 and the third interface of the four-way valve 8, and the other end is connected between the third port of the regenerator 9 and the exhaust port of the gas-liquid separator 4. The tenth valve body 22 is preferably a one-way valve, and the tenth valve body 22 is configured to open when the refrigerant flows from the third interface of the four-way valve 8 to the inlet of the gas-liquid separator 4.

[0051] The following is combined Figures 2 to 4 The operation process of the heat pump air conditioner of this application is described.

[0052] like Figure 2As shown, when the heat pump air conditioner is operating in cooling mode, the first valve body 13, the second valve body 14, and the third throttling element 12 are closed, the second throttling element 11 is fully open, and the electrically controlled three-way valve 23 is switched to connect the drain port of the gas-liquid separator 4 with the first port of the second indoor heat exchanger 6. At this time, the compressor 1 compresses the refrigerant to a high temperature and high pressure, and then it enters the outdoor heat exchanger 2 through the four-way valve 8. After exchanging heat with the outdoor air in the outdoor heat exchanger 2, the refrigerant enters the regenerator 9. After exchanging heat with the returning low-temperature refrigerant gas in the regenerator 9, the refrigerant enters the ejector 3 through the seventh valve body 19. The high-pressure refrigerant, as the driving fluid, enters the ejector 3 and is injected, forming a first pressure and a second pressure at the outlet and ejector port of the ejector 3, respectively, where the first pressure is higher than the second pressure. The refrigerant discharged from the ejector 3 outlet passes through the third valve body 15 and enters the first indoor heat exchanger 5 to exchange heat with the indoor air. After heat exchange, the refrigerant enters the gas-liquid separator 4. In the gas-liquid separator 4, the liquid refrigerant is separated into liquid and flows out from the drain port of the gas-liquid separator 4. After passing through the three-way control valve and being throttled and depressurized by the first throttling element 10, it enters the second indoor heat exchanger 6 to exchange heat with the indoor air and becomes low-temperature, low-pressure refrigerant. The low-temperature, low-pressure refrigerant is drawn into the ejector 3 through the ejector port of the ejector 3 after passing through the fully open second throttling element 11. It mixes with the refrigerant in the ejector 3 and participates in the injection again. The gaseous refrigerant discharged from the exhaust port of the gas-liquid separator 4 is further heated by the regenerator 9 and then flows back to the suction port of the compressor 1 through the ninth valve body 21 and the four-way valve 8, completing the refrigeration cycle.

[0053] like Figure 3As shown, when the heat pump air conditioner is operating in dehumidification mode, the first valve body 13 and the second valve body 14 are open, the first throttling element 10 and the third throttling element 12 are closed, and the electronically controlled three-way valve 23 is switched to connect the drain port of the gas-liquid separator 4 with the inlet of the vortex tube 7. At this time, the compressor 1 compresses the refrigerant to a high temperature and high pressure and then enters the outdoor heat exchanger 2 through the four-way valve 8. After exchanging heat with the outdoor air in the outdoor heat exchanger 2, the refrigerant enters the regenerator 9. After exchanging heat with the returning refrigerant gas in the regenerator 9, the refrigerant enters the ejector 3 through the seventh valve body 19. After the high-pressure refrigerant is injected into the ejector 3 as a driving fluid, a first pressure and a second pressure are formed at the outlet and the inlet of the ejector 3, respectively, where the first pressure is higher than the second pressure. The refrigerant discharged from the ejector 3 outlet enters the gas-liquid separator 4 through the first valve body 13. In the gas-liquid separator 4, the liquid refrigerant flows out from the drain port of the gas-liquid separator 4 after gas-liquid separation, and enters the vortex chamber of the vortex tube 7 after passing through the electrically controlled three-way valve 23. The refrigerant entering the vortex chamber rotates at high speed and flows towards the hot end outlet of the vortex tube 7. The remaining refrigerant is blocked and rotates in the opposite direction at the same speed in the inner circle of the original airflow, flowing towards the cold end outlet of the vortex tube 7. During this process, the two airflows exchange heat. The temperature of the inner ring refrigerant decreases and is discharged from the cold end outlet of the vortex tube 7, while the temperature of the outer ring airflow increases and is discharged from the hot end outlet of the vortex tube 7. The high-temperature refrigerant discharged through the hot end outlet enters the first chamber heat exchanger 5 after passing through the fourth valve body 16, and the low-temperature refrigerant discharged through the cold end outlet enters the second chamber heat exchanger 6 after passing through the fifth valve body 17. Indoor air first passes through the second indoor heat exchanger 6, exchanging heat with the low-temperature refrigerant. During this process, the air temperature decreases, and moisture in the air condenses and precipitates. Then, the air exchanges heat with the first indoor heat exchanger 5, exchanging heat with the high-temperature refrigerant, causing the air temperature to rise. The refrigerant discharged from the first indoor heat exchanger 5 passes through the second valve body 14 and is drawn into the ejector 3 through its inlet. The refrigerant discharged from the second indoor heat exchanger 6 passes through the second throttling element 11 and is drawn into the ejector 3 through its inlet. The refrigerant entering through the ejector 3's inlet mixes with the refrigerant inside the ejector 3 and re-participates in the injection. The gaseous refrigerant discharged from the exhaust port of the gas-liquid separator 4 is further heated by the regenerator 9 and then flows back to the compressor 1's suction port through the ninth valve body 21 and the four-way valve, completing the dehumidification cycle. The amount of refrigerant entering the second indoor heat exchanger 6 can be adjusted by controlling the opening of the second throttling element 11, thereby adjusting the amount of refrigerant at the cold end outlet and the hot end outlet of the vortex tube 7, and thus regulating the cooling and dehumidification capacity and the reheat capacity.

[0054] like Figure 4As shown, when the heat pump air conditioner is running in heating mode, the four-way valve 8 reverses, the first valve body 13, the second valve body 14 and the second throttling element 11 are closed, the first throttling element 10 is fully open, and the electrically controlled three-way valve 23 switches to connect the drain port of the gas-liquid separator 4 with the first port of the second indoor heat exchanger 6. At this time, the compressor 1 compresses the refrigerant to a high temperature and pressure, and after passing through the four-way valve 8 and the tenth valve body 22, it enters the gas-liquid separator 4 through the exhaust port of the gas-liquid separator 4. The high temperature and pressure refrigerant gas flows out through the liquid outlet of the gas-liquid separator 4 and enters the second indoor heat exchanger 6 after passing through the electronically controlled three-way valve 23 and the fully open first throttling element 10. The high temperature and pressure refrigerant exchanges heat with the indoor air in the second indoor heat exchanger 6. After heat exchange, the refrigerant enters the first indoor heat exchanger 5 through the sixth valve body 18 and further exchanges heat with the indoor air to become a low temperature and low pressure refrigerant. The low temperature and low pressure refrigerant flows through the eighth valve body 20 and is throttled and cooled and depressurized by the third throttling element 12 before entering the outdoor heat exchanger 2 through the regenerator 9. After exchanging heat with the outdoor air in the outdoor heat exchanger 2, the low temperature and low pressure refrigerant flows back to the suction port of the compressor 1 through the four-way valve 8, completing the heating cycle.

[0055] The above configuration, by employing a superimposed ejector 3 and vortex tube 7, creates the necessary conditions for refrigerant to enter the vortex tube 7. This allows for the discharge of lower-temperature refrigerant through the cold end outlet of the vortex tube 7, achieving dehumidification of the indoor air. Simultaneously, the heat from the refrigerant discharged through the hot end outlet of the vortex tube 7 reheats the dehumidified air, ultimately achieving dehumidification without cooling. Furthermore, the second throttling element 11 allows for adjustment of the flow rate at both the cold and hot ends of the vortex tube 7, thereby regulating the amount of air cooled and dehumidified and the amount of reheated air, further enhancing the dehumidification effect without cooling. The second ports of both the first indoor heat exchanger 5 and the second indoor heat exchanger 6 are simultaneously connected to the ejector port of the ejector 3, enabling refrigerant recovery and recycling, thus improving air conditioning efficiency. By configuring the first valve body 13, the second valve body 14, and the third valve body 15, efficient cooling and dehumidification operations can be achieved through switching between valve bodies. Connecting the drain port of the gas-liquid separator 4 to the first port of the second indoor heat exchanger 6 further improves the efficiency of air conditioning cooling operation.

[0056] Those skilled in the art will understand that the above preferred embodiments are merely illustrative of the principles of this application and are not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can adjust the above configurations to make this application applicable to more specific application scenarios.

[0057] For example, although the above embodiment is described in conjunction with the second port of the first indoor heat exchanger 5 and the second port of the second indoor heat exchanger 6 being connected to the ejector port of the ejector 3, this is only a preferred technical solution. Those skilled in the art can make adjustments to it. For example, one of the second ports of the first indoor heat exchanger 5 and the second port of the second indoor heat exchanger 6 can also be connected to the inlet of the gas-liquid separator 4, and the corresponding valve body can be set on the pipeline between the second port of the first indoor heat exchanger 5 or the second port of the second indoor heat exchanger 6 and the inlet of the gas-liquid separator 4.

[0058] For example, although the above embodiment is described with the outlet of the ejector 3 connected to the second port of the first indoor heat exchanger 5 and the first port of the first indoor heat exchanger 5 connected to the inlet of the gas-liquid separator 4, this arrangement is not mandatory, and those skilled in the art can choose according to specific application scenarios. If the outlet of the ejector 3 is not connected to the second port of the first indoor heat exchanger 5, and the first port of the first indoor heat exchanger 5 is not connected to the inlet of the gas-liquid separator 4, the first valve body 13, the second valve body 14, and the third valve body 15 can be omitted accordingly. In this case, to ensure the cooling effect, the refrigerant discharged from the hot end outlet of the vortex tube 7 can be diverted to other locations, or the amount of refrigerant entering the first indoor heat exchanger 5 can be adjusted by adding valve bodies.

[0059] For example, although the above implementation is described with the example of a fourth valve body 16 being provided on the pipeline between the hot end outlet of the vortex tube 7 and the first port of the first indoor heat exchanger 5, and a fifth valve body 17 being provided on the pipeline between the cold end outlet of the vortex tube 7 and the first port of the second indoor heat exchanger 6, the provision of the fourth valve body 16 and the fifth valve body 17 is not necessary, and those skilled in the art can choose them based on specific application scenarios.

[0060] For example, although the drain port of the gas-liquid separator 4 is connected to the first port of the second indoor heat exchanger 6, and the drain port of the gas-liquid separator 4, the inlet of the vortex tube 7, and the first port of the second indoor heat exchanger 6 are connected via an electrically controlled three-way valve 23, this is merely an example, and those skilled in the art can adjust it. For instance, the drain port of the gas-liquid separator 4 may not be connected to the first port of the second indoor heat exchanger 6, in which case the first throttling element 10 can be omitted. Furthermore, the drain port of the gas-liquid separator 4 may also be connected to the inlet of the vortex tube 7 and the second indoor heat exchanger 6 respectively via pipelines. Moreover, the electrically controlled three-way valve 23 can also be replaced with multiple solenoid valves, etc.

[0061] For example, although the heat pump air conditioner described above includes a regenerator 9 and a four-way valve 8, their inclusion is not mandatory, and those skilled in the art can choose based on specific needs. For instance, the regenerator 9 can be omitted, along with the corresponding omission of the ninth valve body 21 and tenth valve body 22. Alternatively, the four-way valve 8 can be omitted altogether, in which case the heat pump air conditioner will become a cooling-only air conditioner.

[0062] For example, in the above embodiments, the second port of the second indoor heat exchanger 6 is connected to the first port of the first indoor heat exchanger 5 through a pipeline, and the second port of the first indoor heat exchanger 5 is connected to the second port of the regenerator 9 through a pipeline. These are both preferred embodiments. Those skilled in the art can choose whether to set the above two pipelines based on the specific application scenario. When the above two pipelines are not set, the valve bodies related to the two pipelines (such as the sixth valve body 18, the seventh valve body 19, the eighth valve body 20, and the third throttling element 12, etc.) can be omitted.

[0063] For example, the specific forms of the first valve body 13, the second valve body 14...the tenth valve body 22 are not restrictive. Under the premise of achieving the corresponding functions, those skilled in the art can replace one or more of the valve bodies mentioned above. For example, the solenoid valve can be replaced with other valve bodies that are adjustable for opening and closing, such as electric ball valves, electric butterfly valves, etc., and the check valve can be replaced with solenoid valves, etc.

[0064] For example, in addition to the electronic expansion valve, the first throttling element 10, the second throttling element 11, and the third throttling element 12 mentioned above can also be other throttling valves with opening adjustment functions.

[0065] For example, the above embodiment is described in conjunction with the provision of a second throttling element 11. However, the provision of the second throttling element 11 is not essential, and those skilled in the art can omit it. Of course, omitting it would prevent the flow rate at the cold end outlet and hot end outlet of the vortex tube 7 from being adjusted. Furthermore, the second throttling element 11 can also be located on the cold end outlet or hot end outlet pipeline of the vortex tube 7. This not only enables flow rate control at the cold end outlet or hot end outlet but also eliminates the need for the fourth valve body 16 or the fifth valve body 17 on that pipeline.

[0066] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0067] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A heat pump air conditioner, characterized in that, Includes a compressor, outdoor heat exchanger, ejector, gas-liquid separator, first indoor heat exchanger, second indoor heat exchanger, and vortex tube. The compressor's exhaust port is connected to the first port of the outdoor heat exchanger, the outdoor heat exchanger's second port is connected to the ejector's inlet, the ejector's outlet is connected to the gas-liquid separator's inlet, the gas-liquid separator's exhaust port is connected to the compressor's suction port, the gas-liquid separator's discharge port is connected to the vortex tube's inlet, the vortex tube's hot end outlet is connected to the first port of the first indoor heat exchanger, and the vortex tube's cold end outlet is connected to the first port of the second indoor heat exchanger. The second indoor heat exchanger and the first indoor heat exchanger are arranged sequentially along the air outlet direction. The second port of the first indoor heat exchanger is connected to the ejector port of the ejector. The outlet of the ejector is also connected to the second port of the first indoor heat exchanger, and the first port of the first indoor heat exchanger is also connected to the inlet of the gas-liquid separator. A first valve body is provided on the pipeline between the outlet of the ejector and the inlet of the gas-liquid separator. A second valve body is provided on the pipeline between the second port of the first indoor heat exchanger and the ejector inlet. A third valve body is provided on the pipeline between the outlet of the ejector and the second port of the first indoor heat exchanger. One end of the third valve body is connected between the outlet of the ejector and the first valve body, and the other end of the third valve body is connected between the second port of the first indoor heat exchanger and the second valve body. The drain port of the gas-liquid separator is also connected to the first port of the second indoor heat exchanger, and a first throttling element is provided on the pipeline between the drain port of the gas-liquid separator and the first port of the second indoor heat exchanger. The drain port of the gas-liquid separator, the inlet of the vortex tube, and the first port of the second indoor heat exchanger are respectively connected to the three ports of the electrically controlled three-way valve. The first throttling element is installed on the pipeline between the electrically controlled three-way valve and the first port of the second indoor heat exchanger.

2. The heat pump air conditioner according to claim 1, characterized in that, A fourth valve body is installed on the pipeline between the hot end outlet of the vortex tube and the first port of the first indoor heat exchanger.

3. The heat pump air conditioner according to claim 1, characterized in that, The second port of the second indoor heat exchanger is connected to the ejector port of the ejector or the inlet of the gas-liquid separator.

4. The heat pump air conditioner according to claim 3, characterized in that, A second throttling element is provided on the pipe between the second port of the second indoor heat exchanger and the ejector inlet, or A second throttling element is provided on the pipeline between the second port of the second indoor heat exchanger and the inlet of the gas-liquid separator.

5. The heat pump air conditioner according to claim 1, characterized in that, A fifth valve body is installed on the pipeline between the cold end outlet of the vortex tube and the first port of the second indoor heat exchanger.

6. The heat pump air conditioner according to claim 1, characterized in that, The heat pump air conditioner further includes a regenerator, the first port of which is connected to the second port of the outdoor heat exchanger, the second port of which is connected to the inlet of the ejector, the third port of which is connected to the exhaust port of the gas-liquid separator, and the fourth port of which is connected to the suction port of the compressor. A first heat exchange path is formed between the first and second ports of the regenerator, and a second heat exchange path is formed between the third and fourth ports of the regenerator; and / or The heat pump air conditioner also includes a four-way valve, the four ports of which are respectively connected to the exhaust port of the compressor, the suction port of the compressor, the first port of the outdoor heat exchanger, and the exhaust port of the gas-liquid separator; and / or The refrigerant in the heat pump air conditioner is carbon dioxide or a mixture of refrigerants including carbon dioxide.

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