Gas-liquid separation device and heat pump system

Abstract

The utility model discloses a gas-liquid separation device and a heat pump system, and relates to the technical field of heat pumps, the heat pump system comprises a first heat exchanger, the first heat exchanger comprises at least two heat exchange parts, the gas-liquid separation device comprises at least two gas-liquid separation cavities, and the gas-liquid separation cavities are communicated with the heat exchange parts. Each gas-liquid separation cavity is provided with a refrigerant inlet and a liquid outlet, and the refrigerant inlets and the liquid outlets of different gas-liquid separation cavities are arranged to communicate with different heat exchange parts in the first heat exchanger. According to the technical scheme, the heat exchange effect and the system energy efficiency of the heat exchanger can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a gas-liquid separation device and a heat pump system. Background Art

[0002] In a heat pump system, some heat exchangers are generally divided into two sections and a gas-liquid separation device is installed between the two sections. After the refrigerant passes through the first section heat exchanger for heat exchange, it passes through the gas-liquid separation device for gas-liquid separation and then the liquid refrigerant enters the second section heat exchanger for heat exchange.

[0003] At present, a flow divider, a liquid separation capillary, etc. are generally set at the inlet end of the second-stage heat exchanger to distribute the refrigerant flowing out of the gas-liquid separation device to different flow paths for heat exchange. However, this method will cause problems such as uneven distribution and pressure loss of the refrigerant in the distributor, which will affect the heat exchange effect of the heat exchanger and the system energy efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a gas-liquid separation device and a heat pump system, aiming to improve the heat exchange effect of the heat exchanger and the system energy efficiency.

[0005] To achieve the above-mentioned purpose, the utility model proposes a gas-liquid separation device, which is applied to a heat pump system, wherein the heat pump system includes a first heat exchanger, the first heat exchanger includes at least two heat exchange parts, and the gas-liquid separation device includes at least two gas-liquid separation chambers, each of the gas-liquid separation chambers is respectively provided with a refrigerant inlet and a liquid outlet, and the refrigerant inlets and liquid outlets of different gas-liquid separation chambers are arranged to be connected to different heat exchange parts in the first heat exchanger.

[0006] In one embodiment, the gas-liquid separation chamber is cylindrical, and the gas-liquid separation device also includes at least two inlet pipes. The refrigerant inlet is connected to the inlet pipes one-to-one, and the refrigerant flow channel in the inlet pipe extends along the tangential direction of the inner wall of the corresponding gas-liquid separation chamber.

[0007] In one embodiment, each of the gas-liquid separation chambers is further provided with a gas outlet, wherein the gas outlet is located at the top of the corresponding gas-liquid separation chamber, and the liquid outlet is located at the bottom of the corresponding gas-liquid separation chamber.

[0008] In one embodiment, the gas-liquid separation device comprises a cylinder, and a partition is arranged in the cylinder to divide the cylinder into the gas-liquid separation chambers.

[0009] In one embodiment, a cyclone element or a porous structure is disposed in each of the gas-liquid separation chambers.

[0010] In one embodiment, each of the gas-liquid separation chambers is further provided with a gas outlet, and the gas-liquid separation device further comprises a gas collecting pipe, and each of the gas outlets is communicated with the gas collecting pipe.

[0011] In one embodiment, the gas collecting pipe is disposed in each of the gas-liquid separation chambers;

[0012] In one embodiment, the gas collecting pipe is arranged outside the cylinder, and the gas collecting pipe is connected with each of the gas outlets through a pipeline.

[0013] In one embodiment, the gas outlet of the gas collecting pipe is arranged at the bottom of the gas collecting pipe.

[0014] In order to achieve the above-mentioned object, the present application further proposes a heat pump system, the heat pump system comprising a compressor, a reversing assembly, a first heat exchanger, a second heat exchanger, a throttling device and a gas-liquid separation device as described in any one of the above items, the first heat exchanger, the throttling device and the second heat exchanger are connected in sequence, the exhaust port of the compressor, the return air port of the compressor, the first heat exchanger and the second heat exchanger are all connected to the reversing assembly;

[0015] The first heat exchanger includes at least two heat exchange parts, which are arranged in a one-to-one correspondence with the gas-liquid separation chamber. The heat exchange part includes a first heat exchange module and a second heat exchange module. The first heat exchange module is connected to the refrigerant inlet of the corresponding gas-liquid separation chamber, and the second heat exchange module is connected to the liquid outlet of the corresponding gas-liquid separation chamber.

[0016] In one embodiment, the first heat exchanger further comprises a main pipe, the first ends of the at least two heat exchange parts are both in communication with the main pipe, and the main pipe is in communication with the reversing assembly;

[0017] The heat pump system further includes a flow divider, which includes a confluence port and at least two flow diversion ports, the confluence port is communicated with the throttling device, and the second end of the heat exchange part is communicated with the flow diversion ports in a one-to-one correspondence.

[0018] In one embodiment, the pipeline between the reversing assembly and the gas return port is connected to the gas outlet of the gas collecting pipe through a first pipeline, and the first pipeline is provided with an electronic expansion valve and / or a solenoid valve;

[0019] In one embodiment, the compressor further includes an air supply port, the gas outlet of the gas collecting pipe is connected to the air supply port via a second pipeline, and the first pipeline is provided with an electronic expansion valve and / or a solenoid valve.

[0020] The technical solution of the utility model is to set at least two gas-liquid separation chambers in the gas-liquid separation device, and the refrigerant inlet and liquid outlet of each gas-liquid separation chamber can be respectively connected to different heat exchange parts of the heat exchanger in the heat pump system. The refrigerant in different heat exchange parts can be independently separated into gas and liquid in the gas-liquid separation chamber. The refrigerant flowing out of the gas-liquid separation device can be diverted to different heat exchange parts for heat exchange without setting a diversion structure, which can effectively avoid the uneven distribution problem caused by secondary distribution of the refrigerant, and can also avoid the pressure loss of the refrigerant in the distribution structure, thereby effectively improving the heat exchange effect of the heat exchanger and the system energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a gas-liquid separation device provided by the utility model;

[0023] Figure 2 A schematic structural diagram of another embodiment of the gas-liquid separation device provided by the utility model;

[0024] Figure 3 for Figure 1 A top view of the gas-liquid separation device;

[0025] Figure 4 A schematic structural diagram of another embodiment of the gas-liquid separation device provided by the utility model;

[0026] Figure 5 This is a structural schematic diagram of an embodiment of a heat pump system provided by the utility model.

[0027] Description of Figure Numbers:

[0028] 100. gas-liquid separation device; 101. gas-liquid separation chamber; 102. refrigerant inlet; 103. liquid outlet; 104. gas outlet; 105. gas outlet; 11. cylinder; 12. gas collecting pipe; 13. inlet pipe; 14. partition; 15. cyclone element or porous structure;

[0029] 200, first heat exchanger; 21, heat exchange unit; 211, first heat exchange module; 212, second heat exchange module;

[0030] 300, compressor; 400, second heat exchanger; 500, reversing assembly; 600, throttling device; 700, electronic expansion valve; 800, flow divider; 900, main pipe;

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] The utility model proposes a gas-liquid separation device 100, which is applied to a heat pump system. The heat pump system includes a first heat exchanger 200, and the first heat exchanger 200 includes at least two heat exchange parts 21. The gas-liquid separation device 100 can be used to separate the gas and liquid of the refrigerant in different heat exchangers in the first heat exchanger 200.

[0036] Reference Figure 1 , Figure 2 as well as Figure 4In one embodiment of the utility model, the gas-liquid separation device 100 includes at least two gas-liquid separation chambers 101, each of which is respectively provided with a refrigerant inlet 102 and a liquid outlet 103, and the refrigerant inlet 102 and the liquid outlet 103 of different gas-liquid separation chambers 101 are arranged to be connected to different heat exchange parts 21 in the first heat exchanger 200.

[0037] In this embodiment, the gas-liquid separation chambers 101 are isolated from each other, and the volumes of the gas-liquid separation chambers 101 are the same.

[0038] In one implementation, the gas-liquid separation device 100 may include at least two structures that are separately arranged, and different gas-liquid separation chambers 101 are arranged in different structures. In another implementation, the gas-liquid separation device 100 may include a shell, and different gas-liquid separation chambers 101 are formed by partitions in the shell.

[0039] The gas-liquid separation chamber 101 is arranged in a one-to-one correspondence with the heat exchange part 21 in the first heat exchanger 200, wherein each heat exchange part 21 includes a first heat exchange module 211 and a second heat exchange module 212, the first heat exchange module 211, the refrigerant inlet 102 of the corresponding gas-liquid separation chamber 101, the liquid outlet 103 of the corresponding gas-liquid separation chamber 101 and the second heat exchange module 212 are connected in sequence, and the refrigerant in the heat exchange part 21 corresponding to the gas-liquid separation chamber 101 can flow from the refrigerant inlet 102 into the corresponding gas-liquid separation chamber 101 for gas-liquid separation, and the liquid refrigerant can flow back from the liquid outlet 103 into the corresponding heat exchange part 21 for further heat exchange, and the refrigerant dryness is effectively improved. When the first heat exchanger 200 is in an evaporating state, the evaporation effect of the first heat exchanger 200 can be effectively improved.

[0040] In this embodiment, at least two heat exchange parts 21 include a first heat exchange part 21, a second heat exchange part 21 and a third heat exchange part 21, at least two gas-liquid separation chambers 101 include a first separation chamber, a second separation chamber and a third separation chamber, the refrigerant inlet 102 and the liquid outlet 103 of the first separation chamber are connected to the first heat exchange part 21, the refrigerant inlet 102 and the liquid outlet 103 of the second separation chamber are connected to the second heat exchange part 21, and the refrigerant inlet 102 and the liquid outlet 103 of the third separation chamber are connected to the third heat exchange part 21.

[0041] The technical solution of the present invention is to set at least two gas-liquid separation chambers 101 in the gas-liquid separation device 100, and the refrigerant inlet 102 and the liquid outlet 103 of each gas-liquid separation chamber 101 can be respectively connected to different heat exchange parts 21 of the heat exchanger in the heat pump system, and the refrigerant in different heat exchange parts 21 can be independently separated into gas and liquid in the gas-liquid separation chamber 101. The refrigerant flowing out of the gas-liquid separation device 100 can be diverted to different heat exchange parts 21 for heat exchange without setting a diversion structure, which can effectively avoid the uneven distribution problem caused by the secondary distribution of the refrigerant, and can also avoid the pressure loss of the refrigerant in the distribution structure, thereby effectively improving the heat exchange effect of the heat exchanger and the system energy efficiency.

[0042] In one embodiment, referring to Figure 3 The gas-liquid separation chamber 101 is cylindrically arranged, and the gas-liquid separation device 100 also includes at least two inlet pipes 13. The refrigerant inlet 102 is connected to the inlet pipes 13 in a one-to-one correspondence, and the refrigerant flow channel in the inlet pipes 13 extends along the tangent direction of the inner wall of the corresponding gas-liquid separation chamber 101.

[0043] Each inlet pipe 13 is configured to communicate with a corresponding heat exchange portion 21 in the first heat exchanger 200 .

[0044] In this embodiment, the cross section of the gas-liquid separation chamber 101 is circular. In other embodiments, the cross section of the gas-liquid separation chamber 101 may also be elliptical or other shapes.

[0045] In this embodiment, the inlet pipe 13 is arranged as described above, so that the refrigerant can flow into the gas-liquid separation chamber 101 along the tangential direction. After the refrigerant enters the gas-liquid separation chamber 101, rapid gas-liquid separation can be achieved under the action of centrifugal force, thereby effectively improving the gas-liquid separation efficiency.

[0046] In other embodiments, the refrigerant flow channel in the inlet pipe 13 may also be arranged perpendicular to or at an angle to the tangent direction of the inner wall.

[0047] In one embodiment, referring to Figure 1 , Figure 2 as well as Figure 4 Each of the gas-liquid separation chambers 101 is also provided with a gas outlet 104 , and the gas outlet 104 is located at the top of the corresponding gas-liquid separation chamber 101 , and the liquid outlet 103 is located at the bottom of the corresponding gas-liquid separation chamber 101 .

[0048] After the gas-liquid mixed refrigerant is separated in the gas-liquid separation chamber 101, the gaseous refrigerant floats up and the liquid refrigerant sinks. The gaseous refrigerant can be discharged from the gas outlet 104 at the top, and the liquid refrigerant can be discharged from the liquid outlet 103 at the bottom to the corresponding heat exchange part 21.

[0049] In this embodiment, the gas outlet 104 of the gas-liquid separation chamber 101 can be communicated with the low-pressure side of the refrigerant flow path in the heat pump system.

[0050] In this embodiment, the gas outlet 104 and the liquid outlet 103 are arranged in the above manner, and no additional drainage structure is required in the gas-liquid separation chamber 101, and the loss of refrigerant energy caused by flow resistance is reduced, thereby effectively improving the gas-liquid separation effect.

[0051] In other embodiments, the gas outlet 104 and the liquid outlet 103 may both be disposed at the bottom, and a driving device may be provided to drive the gaseous refrigerant obtained after separation to be discharged from the bottom gas outlet 104; or, the liquid outlet 103 and the gas outlet 104 may both be disposed at the top, and a driving device may be provided to drive the liquid refrigerant obtained after separation to be discharged from the top liquid outlet 103.

[0052] In one embodiment, referring to Figure 1 , Figure 2 as well as Figure 4 The gas-liquid separation device 100 includes a cylinder 11 , and a partition 14 is arranged inside the cylinder 11 to separate the cylinder 11 into the gas-liquid separation chambers 101 .

[0053] The partition 14 and the cylinder 11 may be an integral structure. Alternatively, the partition 14 and the cylinder 11 may be separate structures, and the partition 14 is fixedly installed in the cylinder 11 by an adhesive or a fastener.

[0054] In other embodiments, the gas-liquid separation device 100 may also include more than one shell, each shell is separately arranged, and different gas-liquid separation chambers 101 are arranged in different shells.

[0055] In one embodiment, in combination Figure 1 and Figure 2 A cyclone element 15 or a porous structure 15 is provided in each of the gas-liquid separation chambers 101 .

[0056] The swirl element 15 may include at least one of the following: a swirl plate, a swirl umbrella, a spiral blade, etc. The swirl element 15 can separate the refrigerant under the action of centrifugal force.

[0057] The porous structure 15 may include at least one of the following: a steel ball, a sieve plate, etc. The porous structure 15 can filter and separate the refrigerant.

[0058] In this embodiment, the cyclone element 15 or the porous structure 15 is provided in the gas-liquid separation chamber 101 to improve the gas-liquid separation efficiency.

[0059] In one embodiment, referring to Figure 1 , Figure 2 as well as Figure 4Each of the gas-liquid separation chambers 101 is also provided with a gas outlet 104 . The gas-liquid separation device 100 further includes a gas collecting pipe 12 . Each of the gas outlets 104 is connected to the gas collecting pipe 12 .

[0060] The refrigerants separated from the gas-liquid separation chambers 101 can be mixed in the gas collecting pipe 12 and then discharged.

[0061] The gas outlet 105 of the gas collecting pipe 12 may be in communication with a refrigerant flow path in the heat pump system.

[0062] In this embodiment, the setting of the gas collecting pipe 12 can improve the convenience of connecting the gas-liquid separation device 100 with other components on the one hand, and on the other hand, it is beneficial to improve the performance stability of the gas-liquid separation device 100 discharging the gaseous refrigerant to improve the stability of the heat pump system in which it is located.

[0063] In other embodiments, a gas outlet pipe may be provided in the gas-liquid separation device 100 corresponding to each gas outlet 104 .

[0064] In one embodiment, referring to Figure 1 , the gas collecting pipe 12 is inserted into each of the gas-liquid separation chambers 101. Wherein, when the gas-liquid separation device 100 includes the above-mentioned cylinder 11, the cylinder 11 is sleeved outside the gas collecting pipe 12 and is spaced apart from the outer wall of the gas collecting pipe 12, and the gas-liquid separation chamber 101 is formed between the inner wall of the cylinder 11 and the outer wall of the gas collecting pipe 12.

[0065] In this embodiment, the gas collecting pipe 12 is arranged in each gas-liquid separation chamber 101, which is beneficial to reduce the connection structure between the gas-liquid separation chamber 101 and the gas collecting pipe 12, reduce the overall volume of the gas-liquid separation device 100, and facilitate installation.

[0066] In one embodiment, referring to Figure 2 and Figure 4 The gas collecting pipe 12 is arranged outside the cylinder 11, and the gas collecting pipe 12 is connected with each of the gas outlets 104 through a pipeline.

[0067] In this embodiment, through the above arrangement, different components in the gas-liquid separation device 100 can be produced independently, which is beneficial to simplifying the production process and thus beneficial to improving production efficiency.

[0068] In one embodiment, referring to Figure 4 The gas outlet 105 of the gas collecting pipe 12 is arranged at the bottom of the gas collecting pipe 12 .

[0069] In this embodiment, the gas-liquid outlet is arranged at the bottom of the gas collecting pipe 12, which is beneficial to prevent part of the gaseous refrigerant from liquefying or the refrigeration oil from accumulating at the bottom of the gas collecting pipe 12, and is beneficial to ensure the operational reliability of the heat pump system.

[0070] In other embodiments, the gas-liquid outlet of the gas collecting pipe 12 may also be disposed at the top of the gas collecting pipe 12 .

[0071] The utility model also proposes a heat pump system, referring to Figure 5 The heat pump system includes a compressor 300, a reversing assembly 500, a first heat exchanger 200, a second heat exchanger 400, a throttling device 600 and a gas-liquid separation device 100. The specific structure of the gas-liquid separation device 100 refers to the above embodiment. Since the heat pump system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0072] The first heat exchanger 200, the throttling device 600 and the second heat exchanger 400 are connected in sequence, and the exhaust port of the compressor 300, the return air port of the compressor 300, the first heat exchanger 200 and the second heat exchanger 400 are all connected to the reversing assembly 500;

[0073] The first heat exchanger 200 includes at least two heat exchange parts 21, and the heat exchange parts 21 are arranged in a one-to-one correspondence with the gas-liquid separation chamber 101. The heat exchange part 21 includes a first heat exchange module 211 and a second heat exchange module 212. The first heat exchange module 211 is connected to the refrigerant inlet 102 of the corresponding gas-liquid separation chamber 101, and the second heat exchange module 212 is connected to the liquid outlet 103 of the corresponding gas-liquid separation chamber 101.

[0074] In this embodiment, at least two heat exchange parts 21 are connected in parallel.

[0075] In each heat exchange part 21, after the refrigerant flows into the first heat exchange module 211 for heat exchange, it can flow into the corresponding gas-liquid separation chamber 101 from the refrigerant inlet 102 for gas-liquid separation, and the liquid refrigerant obtained by gas-liquid separation can flow into the second heat exchange module 212 from the liquid outlet 103 for heat exchange.

[0076] The reversing component 500 (such as a four-way valve, etc.) has a first operating state and a second operating state. When the reversing component 500 operates in the first operating state, the exhaust port of the compressor 300 is connected to the first heat exchanger 200, and the return air port of the compressor 300 is connected to the second heat exchanger 400, the first heat exchanger 200 is in a condensing state, and the second heat exchanger 400 is in an evaporating state; when the reversing component 500 operates in the second operating state, the exhaust port of the compressor 300 is connected to the second heat exchanger 400, and the return air port of the compressor 300 is connected to the first heat exchanger 200, the first heat exchanger 200 is in an evaporating state, and the second heat exchanger 400 is in a condensing state.

[0077] In one embodiment, referring to Figure 5The first heat exchanger 200 also includes a main pipe 900, the first ends of the at least two heat exchange parts 21 are connected to the main pipe 900, and the main pipe 900 is connected to the reversing assembly 500; the heat pump system also includes a diverter 800, the diverter 800 includes a confluence and at least two diversion ports, the confluence is connected to the throttling device 600, and the second end of the heat exchange part 21 is connected to the diversion port one by one.

[0078] Here, by setting the diverter 800, the refrigerant flowing out of the throttling device 600 can be evenly distributed to each heat exchange part 21 for heat exchange. By setting the main pipe 900, the refrigerant flowing out of each heat exchange part 21 after heat exchange can be fully mixed and then flow back to the compressor 300. Based on this, it is beneficial to improve the heat exchange efficiency of the first heat exchanger 200 and the operating reliability of the compressor 300.

[0079] In one embodiment, referring to Figure 5 The pipeline between the reversing assembly 500 and the gas return port is connected to the gas outlet 105 of the gas collecting pipe 12 through a first pipeline, and the first pipeline is provided with an electronic expansion valve 700 and / or a solenoid valve.

[0080] The electronic expansion valve 700 can adjust the refrigerant flow in the first pipeline.

[0081] The solenoid valve can open or block the first pipeline.

[0082] When the first pipeline is provided with the electronic expansion valve 700 and the solenoid valve, the electronic expansion valve 700 and the solenoid valve are connected in series.

[0083] Based on this, it is beneficial to increase the amount of gaseous refrigerant flowing into the compressor 300, thereby effectively improving the energy efficiency of the compressor 300 and achieving an effective improvement in the output capacity of the system.

[0084] In one embodiment, the compressor 300 further includes a gas supply port, and the gas outlet of the gas collecting pipe 12 is connected to the gas supply port via a second pipeline, and the first pipeline is provided with an electronic expansion valve 700 and / or a solenoid valve.

[0085] The electronic expansion valve 700 can adjust the refrigerant flow in the first pipeline.

[0086] The solenoid valve can open or block the first pipeline.

[0087] When the first pipeline is provided with the electronic expansion valve 700 and the solenoid valve, the electronic expansion valve 700 and the solenoid valve are connected in series.

[0088] Here, the separated gaseous refrigerant is used to replenish air and increase enthalpy of the compressor 300, which is beneficial to improving the output capacity of the compressor 300 and effectively improving the heat exchange efficiency of the system.

[0089] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A gas-liquid separation device, characterized in that: Applicable to a heat pump system, the heat pump system includes a first heat exchanger, the first heat exchanger includes at least two heat exchange parts, the gas-liquid separation device includes at least two gas-liquid separation chambers, each of the gas-liquid separation chambers is respectively provided with a refrigerant inlet and a liquid outlet, and the refrigerant inlets and liquid outlets of different gas-liquid separation chambers are arranged to be connected to different heat exchange parts in the first heat exchanger.

2. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation chamber is cylindrically arranged, and the gas-liquid separation device also includes at least two inlet pipes. The refrigerant inlet is connected to the inlet pipes one by one, and the refrigerant flow channel in the inlet pipe extends along the tangent direction of the inner wall of the corresponding gas-liquid separation chamber.

3. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device comprises a cylinder, and a partition is arranged in the cylinder to divide the cylinder into the gas-liquid separation chambers.

4. The gas-liquid separation device according to claim 1, characterized in that: A cyclone element or a porous structure is arranged in each of the gas-liquid separation chambers.

5. The gas-liquid separation device according to any one of claims 1 to 4, characterized in that: Each of the gas-liquid separation chambers is also provided with a gas outlet, and the gas-liquid separation device further comprises a gas collecting pipe, and each of the gas outlets is communicated with the gas collecting pipe.

6. The gas-liquid separation device according to claim 5, characterized in that: The gas collecting pipe is arranged in each gas-liquid separation chamber; Alternatively, the gas collecting pipe is arranged outside each of the gas-liquid separation chambers, and the gas collecting pipe is connected to each of the gas outlets through a pipeline.

7. The gas-liquid separation device according to claim 5, characterized in that: The gas outlet of the gas collecting pipe is arranged at the bottom of the gas collecting pipe.

8. The gas-liquid separation device according to claim 5, characterized in that: The gas outlet is located at the top of the corresponding gas-liquid separation chamber, and the liquid outlet is located at the bottom of the corresponding gas-liquid separation chamber.

9. A heat pump system, characterized in that: The heat pump system comprises a compressor, a reversing assembly, a first heat exchanger, a second heat exchanger, a throttling device, and a gas-liquid separation device according to any one of claims 1 to 8, wherein the first heat exchanger, the throttling device, and the second heat exchanger are connected in sequence, and the exhaust port of the compressor, the return air port of the compressor, the first heat exchanger, and the second heat exchanger are all connected to the reversing assembly; The first heat exchanger includes at least two heat exchange parts, which are arranged in a one-to-one correspondence with the gas-liquid separation chamber. The heat exchange part includes a first heat exchange module and a second heat exchange module. The first heat exchange module is connected to the refrigerant inlet of the corresponding gas-liquid separation chamber, and the second heat exchange module is connected to the liquid outlet of the corresponding gas-liquid separation chamber.

10. The heat pump system according to claim 9, characterized in that: The first heat exchanger further comprises a main pipe, the first ends of the at least two heat exchange parts are both connected to the main pipe, and the main pipe is connected to the reversing assembly; and / or, The heat pump system further includes a flow divider, which includes a confluence port and at least two flow diversion ports, the confluence port is communicated with the throttling device, and the second end of the heat exchange part is communicated with the flow diversion ports in a one-to-one correspondence.

11. The heat pump system according to claim 9 or 10, characterized in that: The heat pump system comprises a gas-liquid separation device as claimed in any one of claims 6 to 8, the pipeline between the reversing assembly and the gas return port is connected to the gas outlet of the gas collecting pipe through a first pipeline, and the first pipeline is provided with an electronic expansion valve and / or a solenoid valve; or The heat pump system includes a gas-liquid separation device as described in any one of claims 6 to 8, and the compressor also includes a gas supply port. The gas outlet of the gas collecting pipe is connected to the gas supply port through a second pipeline, and the first pipeline is provided with an electronic expansion valve and / or a solenoid valve.

Images