Gas-liquid separator and heat pump system
By introducing capillary oil suction pipes and partitions into the gas-liquid separator, the problem of oil discharge at the liquid outlet in the CO2 heat pump system is solved, the heat exchange efficiency is improved, the system is blocked, and the normal operation of the system is achieved.
Patent Information
- Application Number
- CN202323272043.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-11-30
AI Technical Summary
The existing gas-liquid separators have problems with oil discharge ports in the CO2 heat pump system, resulting in a large amount of oil in the low-temperature evaporator, blocking the system flow path and affecting the heat exchange efficiency.
A gas-liquid separator is designed, and a capillary oil suction pipe is used to suck the oil at the bottom of the shell into the exhaust pipe to prevent excessive oil from causing the oil to rise above the inlet of the drain pipe, thereby preventing oil from flowing into the drain pipe. Block the system flow path and accelerate gas-liquid separation through the partition net and baffle to improve heat exchange efficiency.
It effectively avoids oil flow into the drain pipe, prevents system blockage, improves heat exchange efficiency, ensures the normal operation of the system, and achieves uniform oil inlet under the action of multiple oil suction holes.
Smart Images
Figure CN222210866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat pumps, in particular to a gas-liquid separator and a heat pump system. Background Art
[0002] The CO2 heat pump system has the advantages of high heating temperature and strong low-temperature heating capacity, and has great application prospects in home or commercial scenarios such as heat pump water heaters, heat pump floor heating, and air conditioners. During the operation of the CO2 heat pump system, the refrigerant enters the gas-liquid separator and completes the separation of gas and liquid under the action of gravity and enters the corresponding pipeline to avoid affecting the refrigeration efficiency of the system.
[0003] In the process of separating the gaseous refrigerant and the liquid refrigerant, the lubricating oil carried in the refrigerant is also separated. To ensure the normal operation of the system, the gas-liquid separator needs to return oil, that is, the lubricating oil is discharged with the gaseous refrigerant. However, in actual use, the gas-liquid separator has the problem of discharging oil from the drain port, resulting in a large amount of oil in the low-temperature evaporator, blocking the system flow path and affecting the heat exchange efficiency.
[0004] Accordingly, the art needs a new technical solution to solve the above problems. Utility Model Content
[0005] In order to solve at least one of the above problems in the prior art, that is, to solve the problems of oil discharge from the drain port and low heat exchange efficiency caused by the existing gas-liquid separator, the present application provides a gas-liquid separator, which includes:
[0006] A shell, wherein the shell is provided with a first opening, a second opening and a third opening;
[0007] An air inlet pipe, a liquid discharge pipe and an exhaust pipe, wherein the air inlet pipe, the liquid discharge pipe and the exhaust pipe extend into the interior of the shell from the first opening, the second opening and the third opening respectively;
[0008] A capillary oil suction pipe, wherein the upper end of the capillary oil suction pipe is connected to the exhaust pipe, and the lower end of the capillary oil suction pipe extends to the bottom of the shell.
[0009] When the above technical solution is adopted, the capillary oil suction tube can suck the oil at the bottom into the exhaust pipe, preventing excessive oil from causing the oil level to rise above the drain pipe inlet, thereby preventing the oil from flowing into the drain pipe, blocking the system flow path, and affecting the heat exchange efficiency.
[0010] In the preferred technical solution of the above-mentioned gas-liquid separator, the capillary oil suction pipe includes a horizontal pipe section and a vertical pipe section connected to each other, the horizontal pipe section is connected to the exhaust pipe, and the vertical pipe section extends to the bottom of the shell.
[0011] When the above technical solution is adopted, the capillary oil suction pipe can better suck the oil at the bottom of the gas-liquid separator into the exhaust pipe.
[0012] In the preferred technical solution of the above-mentioned gas-liquid separator, an oil suction hole is provided on the vertical pipe section.
[0013] When the above technical solution is adopted, the oil suction hole can automatically adjust the oil intake of the capillary oil suction tube according to the height of the liquid level.
[0014] In the preferred technical solution of the gas-liquid separator, the oil suction hole is provided in plurality, and / or
[0015] The oil suction hole is located below the inlet of the drain pipe.
[0016] When the above technical solution is adopted, it can be ensured that under the action of the capillary oil suction tube, the oil level is always below the inlet of the discharge pipe, thereby preventing oil from flowing into the discharge pipe, blocking the system flow path, and affecting the heat exchange efficiency. In addition, under the action of multiple oil suction holes, oil can be evenly introduced into the capillary oil suction tube.
[0017] In the preferred technical solution of the above gas-liquid separator, the first opening is opened at the top of the shell, the air inlet pipe extends from the top of the gas-liquid separator, and / or
[0018] The second opening is formed in the side wall of the shell, the drain pipe extends from the side wall of the gas-liquid separator, and / or
[0019] The third opening is formed at the bottom end of the shell, and the exhaust pipe extends from the bottom end of the gas-liquid separator.
[0020] When the above technical solution is adopted, the separated gaseous refrigerant can quickly enter the inlet of the exhaust pipe.
[0021] In a preferred technical solution of the above-mentioned gas-liquid separator, the gas-liquid separator further includes a partition net, and the partition net is arranged between the air inlet pipe and the exhaust pipe.
[0022] When the above technical solution is adopted, the mixed refrigerant enters the gas-liquid separator from the air inlet and passes through the partition screen, and the gas and liquid phases are quickly separated under the dual effects of the partition screen and gravity.
[0023] In a preferred technical solution of the above-mentioned gas-liquid separator, the gas-liquid separator further includes a baffle, and the baffle is arranged above the exhaust pipe.
[0024] When the above technical solution is adopted, when the outlet of the intake pipe is directly opposite to the inlet of the exhaust pipe, the baffle can prevent the mixed refrigerant from directly entering the exhaust pipe from the intake pipe, thereby avoiding affecting the heat exchange efficiency.
[0025] The present application also provides a heat pump system, which includes any one of the gas-liquid separators described above.
[0026] When the above-mentioned gas-liquid separator is adopted, a capillary oil suction tube is provided in the gas-liquid separator in the heat pump system, and the capillary oil suction tube can suck the oil at the bottom into the exhaust pipe, so as to prevent the oil level from rising above the inlet of the drain pipe due to excessive oil, thereby preventing the oil from flowing into the drain pipe, blocking the system flow path and affecting the heat exchange efficiency.
[0027] In the preferred technical solution of the above heat pump system, the heat pump system includes a first indoor heat exchanger and a second indoor heat exchanger, and the air inlet pipe and the liquid discharge pipe of the gas-liquid separator are respectively connected to the outlet of the first indoor heat exchanger and the inlet of the second indoor heat exchanger.
[0028] When the above technical solution is adopted, the refrigerant enters the gas-liquid separator after completing the heat exchange in the first indoor heat exchanger, and then the liquid refrigerant that has not been completely heat exchanged enters the second indoor heat exchanger from the drain port for sufficient heat exchange, thereby improving the heat exchange efficiency.
[0029] In the preferred technical solution of the above heat pump system, the refrigerant used in the heat pump system is CO2.
[0030] When the above technical solution is adopted, using CO2 as a refrigerant will not have a negative impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] The gas-liquid separator of the present application is described below with reference to the accompanying drawings. In the accompanying drawings:
[0032] Figure 1 A schematic diagram of a gas-liquid separator of the present application;
[0033] Figure 2 A schematic diagram of a capillary oil suction tube of the present application;
[0034] Figure 3 is a schematic diagram of an existing gas-liquid separator;
[0035] Figure 4 is a schematic diagram of another existing gas-liquid separator;
[0036] Figure 5 This is a schematic diagram of the heat pump system of the present application.
[0037] Reference numerals list
[0038] 10. Gas-liquid separator; 11. Shell; 111. First opening; 112. Second opening; 113. Third opening; 12. Air inlet pipe; 13. Liquid discharge pipe; 14. Exhaust pipe; 15. Capillary oil suction pipe; 151. Horizontal pipe section; 152. Vertical pipe section; 153. Oil suction hole; 16. Screen; 17. Baffle; 18. Opening; 20. Compressor; 30. Four-way valve; 40. Outdoor heat exchanger; 50. Regenerator; 60. Ejector; 70. First indoor heat exchanger; 80. Second indoor heat exchanger; 90. Throttling element. DETAILED DESCRIPTION
[0039] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. For example, although the air intake pipe and the exhaust pipe in the accompanying drawings are relatively arranged, this positional relationship is not fixed, and those skilled in the art can make adjustments as needed to adapt to specific applications. For example, the exhaust pipe can extend from the side wall of the gas-liquid separator.
[0040] It should be noted that, in the description of the present application, the terms "center", "upper", "lower", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are merely for the convenience of description and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, "multiple" refers to at least two.
[0041] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0042] As described in the background technology, the CO2 heat pump system has the advantages of high heating temperature and strong low-temperature heating capacity, and has great application prospects in home or commercial scenarios such as heat pump water heaters, heat pump floor heating, and air conditioners. During the operation of the CO2 heat pump system, the refrigerant enters the gas-liquid separator and completes the separation of gas and liquid under the action of gravity and enters the corresponding pipeline to avoid affecting the refrigeration efficiency of the system.
[0043] In the process of separating the gaseous refrigerant and the liquid refrigerant, the lubricating oil carried in the refrigerant is also separated. To ensure the normal operation of the system, the gas-liquid separator needs to return oil, that is, the lubricating oil is discharged with the gaseous refrigerant. However, in actual use, the gas-liquid separator has the problem of discharging oil from the drain port, resulting in a large amount of oil in the low-temperature evaporator, blocking the system flow path and affecting the heat exchange efficiency.
[0044] In order to solve the problems of oil discharge from the drain port and low heat exchange efficiency caused by the existing gas-liquid separator, the present application provides a gas-liquid separator, which includes a shell, an air inlet pipe, a liquid discharge pipe, an exhaust pipe and a capillary oil suction pipe, wherein a first opening, a second opening and a third opening are opened on the shell, and the air inlet pipe, the liquid discharge pipe and the exhaust pipe extend into the interior of the shell from the first opening, the second opening and the third opening respectively, and the upper end of the capillary oil suction pipe is connected to the exhaust pipe, and the lower end extends to the bottom of the shell.
[0045] When the above technical solution is adopted, the capillary oil suction tube can suck the oil at the bottom of the shell into the exhaust pipe, thereby preventing excessive oil from causing the oil level to rise above the drain pipe inlet, thereby preventing the oil from flowing into the drain pipe, blocking the system flow path, and affecting the heat exchange efficiency.
[0046] Combine the following Figures 1 to 4 , the gas-liquid separator of the present application is described. Among them, Figure 1 A schematic diagram of a gas-liquid separator of the present application; Figure 2 A schematic diagram of a capillary oil suction tube of the present application; Figure 3 is a schematic diagram of an existing gas-liquid separator; Figure 4 It is a schematic diagram of another existing gas-liquid separator.
[0047] like Figure 1 to Figure 2 As shown, in a preferred embodiment, the gas-liquid separator 10 includes a shell 11, an air inlet pipe 12, a liquid discharge pipe 13, an exhaust pipe 14, a capillary oil suction pipe 15, a partition 16 and a baffle 17, wherein a first opening 111 is provided at the top of the shell 11, a second opening 112 is provided at the side wall of the shell 11, and a third opening 113 is provided at the bottom of the shell 11. The air inlet pipe 12, the liquid discharge pipe 13 and the exhaust pipe 14 extend into the interior of the gas-liquid separator 10 from the first opening 111, the second opening 112 and the third opening 113 respectively. The capillary oil suction pipe 15 includes a horizontal pipe section 151 and a vertical pipe section 152 connected to each other, the horizontal pipe section 151 is connected to the exhaust pipe 14, and the vertical pipe section 152 extends to the bottom of the shell 11 and is lower in height than the inlet of the liquid discharge pipe 13 (i.e., one end of the liquid discharge pipe 13 located inside the shell 11). In addition, four oil suction holes 153 are evenly opened on the vertical pipe section 152, and the four oil suction holes 153 are also located below the inlet of the drain pipe. The partition 16 is arranged between the air inlet pipe 13 and the exhaust pipe 14, and the baffle 17 is located directly above the exhaust pipe 14 and arranged between the partition 16 and the exhaust pipe 14.
[0048] It needs to be explained that, usually, when the air conditioner is in cooling mode, the refrigerant is first compressed into a high-temperature and high-pressure gas through the compressor. The high-temperature and high-pressure gaseous refrigerant is cooled through the outdoor heat exchanger and becomes a medium-temperature and high-pressure liquid refrigerant. The medium-temperature and high-pressure liquid refrigerant then passes through the throttling device and becomes a low-temperature and low-pressure liquid refrigerant. After the low-temperature and low-pressure liquid refrigerant flows into the indoor heat exchanger, it absorbs the heat in the room and becomes a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant is sucked into the compressor again and compressed into a high-temperature and high-pressure gaseous refrigerant. The reciprocating cycle achieves the cooling effect, but the refrigerant in the indoor heat exchanger may not be able to fully exchange heat, that is, the liquid refrigerant may not be able to fully absorb heat and become a gaseous refrigerant.
[0049] In this embodiment, the mixed refrigerant first enters the gas-liquid separator 10 before returning to the compressor, so as to separate the gaseous refrigerant from the liquid refrigerant, and then the liquid refrigerant can pass through the indoor heat exchanger again to absorb heat, so as to improve the refrigeration efficiency. Figure 1 and Figure 2 As shown, the mixed refrigerant enters the shell 11 from the air inlet pipe 12, first passes through the partition 16, and is separated from the gas and liquid under the action of the partition 16 and gravity. The baffle 17 can prevent the liquid refrigerant from directly flowing into the exhaust pipe 14. Generally, since the density of the lubricating oil is greater than the density of the refrigerant, the oil layer is deposited below the liquid refrigerant layer, and then the liquid refrigerant is discharged through the drain pipe 13, and the gaseous refrigerant is discharged through the exhaust pipe 14. The lubricating oil flows into the exhaust pipe 14 under the action of the capillary oil suction tube 15.
[0050] In the prior art, an opening 18 is usually directly provided on the exhaust pipe 14, and lubricating oil can flow into the exhaust pipe 14 from the opening 18. From the perspective of the setting height of the opening 18, there are the following two situations: one is that Figure 3 As shown, the opening 18 is located above the inlet of the drain pipe 13. At this time, the oil in the system will accumulate below the opening 18 and cannot circulate back to the compressor with the exhaust gas, causing the oil at the bottom to enter the drain pipe 13 and then remain in the liquid refrigerant circulation loop of the indoor heat exchanger, causing system blockage and poor heat exchange effect. Second, Figure 4 As shown, the opening 18 is located below the inlet of the drain pipe 13. When the amount of oil is large, it is difficult to control the amount of oil, and excess oil is often returned. Even when the machine is shut down, the oil flows into the exhaust circuit through the opening 18, causing an impact.
[0051] Return to Reference Figure 1 and Figure 2In the present application, under the capillary action, the capillary oil suction tube 15 can evenly absorb the lubricating oil at the bottom, and because a plurality of oil suction holes 153 are provided on the vertical pipe section 152 of the capillary oil suction tube 15, not only can the oil intake of the capillary oil suction tube 15 be increased when the lubricating oil accumulates more, but also it can be ensured that as the liquid level of the oil layer and the liquid refrigerant layer drops, after the upper oil suction hole 153 takes in air, the suction force of the capillary oil suction tube 15 becomes smaller, so that the oil intake of the capillary oil suction tube 15 becomes less, and as the liquid level continues to drop, the capillary oil suction tube 15 can stop taking in oil, thereby ensuring that the lubricating oil can be evenly mixed with the gaseous refrigerant to avoid excessive oil accumulation entering the drain pipe 13, and also preventing the lubricating oil from automatically flowing into the exhaust pipe 14 when the machine is shut down.
[0052] It is understood by those skilled in the art that the specific setting of the capillary oil suction pipe 15 is not fixed, and its shape can also be changed according to the needs of those skilled in the art. In an alternative embodiment, the capillary oil suction pipe 15 is set to an arc, or a pipe section connected to each other with an obtuse angle. In addition, although in this embodiment, four oil suction holes 153 are evenly opened at the bottom of the capillary oil suction pipe 15, its setting is not fixed, and the number and height of the oil suction holes 153 can also be changed according to the needs of those skilled in the art. In an alternative embodiment, the oil suction hole 153 can also be set to one, two, three, five or more, and when multiple oil suction holes 153 are set, their spacing can also be changed. Of course, the oil suction hole 153 can also be omitted, and the capillary oil suction pipe 15 only takes in oil from the bottom, but considering that the capillary oil suction pipe 15 needs to take in oil quickly when the amount of oil is large, therefore, setting the oil suction hole 153 is a better choice. In another alternative embodiment, the oil suction hole 153 can also be set at the upper part of the vertical pipe section 152. When the liquid level is low, the upper oil suction hole 153 takes in air, resulting in a small amount of oil intake. When the liquid level gradually rises to the oil suction hole 153, the oil suction hole 153 also starts to take in oil, so that when the amount of oil is large, the oil intake of the capillary oil suction tube 15 also increases accordingly. However, considering that when the liquid level rises, oil may also start to enter the discharge pipe 13. Therefore, it is a better choice to set the oil suction hole 153 at the lower part of the vertical pipe section 152 and below the entrance of the discharge pipe 13.
[0053] Those skilled in the art can also understand that the arrangement of the first opening 111, the second opening 112 and the third opening 113 is not fixed. In consideration of the arrangement space and distribution, as long as the normal functions of the air intake pipe 12, the liquid discharge pipe 13 and the exhaust pipe 14 can be achieved, in an alternative embodiment, the third opening 113 is arranged on the side wall of the shell 11, and the exhaust pipe 14 extends from the side wall. In another alternative embodiment, the first opening 111 is arranged on the side wall of the shell 11, the third opening 113 is arranged at the top of the shell 11, the air intake pipe 12 extends from the side wall, and the exhaust pipe 14 extends from the top. In addition, the arrangement of the partition 16 and the baffle 17 is not necessary. In the case where the partition 16 is not arranged, the liquid and the gas can also be separated under the action of gravity, but under the action of the partition 16, the liquid and the gas can be separated faster, so the arrangement of the partition 16 is a better choice. In addition, when the outlet of the intake pipe 12 is not directly opposite to the inlet of the exhaust pipe 14, the baffle 17 may not be provided. Of course, when the baffle 17 is provided, its shape may also be changed according to the needs of technicians in this field.
[0054] The present application also provides a heat pump system, which includes the gas-liquid separator 10 in the above embodiment.
[0055] See below Figure 5 To describe the preferred embodiment of the heat pump system of the present application, Figure 5 This is a schematic diagram of the heat pump system of the present application.
[0056] like Figure 5 As shown, in a preferred embodiment, the heat pump system includes a gas-liquid separator 10, a compressor 20, a four-way valve 30, an outdoor heat exchanger 40, a regenerator 50, an ejector 60, a first indoor heat exchanger 70, a second indoor heat exchanger 80 and a throttling element 90. The air inlet pipe and the liquid discharge pipe of the gas-liquid separator 10 are respectively connected to the outlet of the first indoor heat exchanger and the inlet of the second indoor heat exchanger, and the exhaust pipe of the gas-liquid separator 10 is connected to the air intake of the compressor 20. Preferably, the refrigerant used in the heat pump system of this embodiment is CO2, and the throttling element 90 is set as an electronic expansion valve.
[0057] In this embodiment, the refrigerant gas compressed by the compressor 20 enters the outdoor heat exchanger 40 through the four-way valve 30 to be cooled, and then enters the regenerator 50 to be further cooled. The low-temperature and low-pressure refrigerant liquid enters the first indoor heat exchanger 70 through the ejector 60. After cooling the indoor temperature, the mixed refrigerant enters the gas-liquid separator 10. After the gaseous refrigerant comes out of the gas-liquid separator 10, it enters the regenerator 50 to be heated, and then returns to the compressor 20 through the four-way valve 30 to enter the next refrigeration cycle; and after the liquid refrigerant comes out of the gas-liquid separator 10, it enters the second indoor heat exchanger 80 through the throttling of the throttling element 90, and after cooling the indoor temperature again, it enters the first indoor heat exchanger 70 through the inlet of the ejector 60, and the reciprocating cycle is used to improve the refrigeration effect.
[0058] It should be explained that the present embodiment only lists a CO2 heat pump system including a gas-liquid separator 10, but the specific setting of the heat pump system is not necessary. As long as the normal function of the gas-liquid separator 10 can be achieved, other settings in the heat pump system can also be increased or decreased according to demand. Accordingly, the setting position of the gas-liquid separator 10 in the heat pump system can also be changed. For example, in an alternative embodiment, the second indoor heat exchanger 80 is omitted, and the liquid refrigerant can return to the upstream of the first indoor heat exchanger 70 after coming out of the gas-liquid separator 10, and then re-enter the first indoor heat exchanger 70 and cool the room. In another alternative embodiment, the refrigerant may not use CO2, as long as the density of the refrigerant is less than the density of the lubricating oil. In addition, the throttling element 90 can also be replaced by a capillary. Of course, the gas-liquid separator 10 in the present application can also be set in an ordinary air conditioner. At this time, the gas-liquid separator 10 can be set upstream of the compressor 20, thereby preventing the occurrence of liquid hammer and avoiding damage to the compressor 20.
[0059] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.
[0060] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present 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 fall within the protection scope of the present application.
Claims
1. A gas-liquid separator, characterized in that: include: A shell, wherein the shell is provided with a first opening, a second opening and a third opening; An air inlet pipe, a liquid discharge pipe and an exhaust pipe, wherein the air inlet pipe, the liquid discharge pipe and the exhaust pipe extend into the interior of the shell from the first opening, the second opening and the third opening respectively; A capillary oil suction pipe, wherein the upper end of the capillary oil suction pipe is connected to the exhaust pipe, and the lower end of the capillary oil suction pipe extends to the bottom of the shell.
2. The gas-liquid separator according to claim 1, characterized in that: The capillary oil suction pipe comprises a horizontal pipe section and a vertical pipe section connected to each other, the horizontal pipe section is connected to the exhaust pipe, and the vertical pipe section extends to the bottom of the shell.
3. The gas-liquid separator according to claim 2, characterized in that: The vertical pipe section is provided with an oil suction hole.
4. The gas-liquid separator according to claim 3, characterized in that: The oil suction hole is provided in plurality, and / or The oil suction hole is located below the inlet of the drain pipe.
5. The gas-liquid separator according to claim 1, characterized in that: The first opening is formed at the top of the housing, the air inlet pipe extends from the top of the gas-liquid separator, and / or The second opening is formed in the side wall of the shell, the drain pipe extends from the side wall of the gas-liquid separator, and / or The third opening is formed at the bottom end of the shell, and the exhaust pipe extends from the bottom end of the gas-liquid separator.
6. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator further comprises a partition net, and the partition net is arranged between the air inlet pipe and the exhaust pipe.
7. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator further includes a baffle, which is arranged above the exhaust pipe.
8. A heat pump system, characterized in that: The heat pump system comprises the gas-liquid separator according to any one of claims 1-7.
9. The heat pump system according to claim 8, characterized in that: The heat pump system includes a first indoor heat exchanger and a second indoor heat exchanger, and an air inlet pipe and a liquid discharge pipe of the gas-liquid separator are respectively connected to an outlet of the first indoor heat exchanger and an inlet of the second indoor heat exchanger.
10. The heat pump system according to claim 8, characterized in that: The refrigerant used in the heat pump system is CO2.