Gas-liquid separator and compressor

Abstract

The present invention provides a gas-liquid separator and a compressor. The gas-liquid separator includes a shell, a pipeline and a liquid pumping device. The shell is provided with a storage space for storing liquid; the pipeline is fixed in the storage space and is provided with an oil return hole; the liquid pumping device includes an outer shell and a liquid suction pipe. The outer shell is fixed on the outside of the pipeline, and the outer shell is provided with a chamber, and the chamber is connected to the oil return hole. One end of the liquid suction pipe is fixedly connected to the outer shell and is connected to the chamber, and the other end extends to the bottom of the storage space; wherein, the fluid flows along the pipeline, and the chamber forms a negative pressure. The liquid suction pipe sucks the liquid into the chamber and flows to the pipeline through the oil return hole. The present application provides a liquid pumping device fixed on the outside of the pipeline. When fluid flows in the pipeline, the chamber generates a negative pressure, and the liquid in the storage space enters the chamber and the pipeline along the liquid suction pipe to meet the liquid return requirement of the compressor, and the oil return hole can be set at a high place, so that the gas-liquid separator has sufficient liquid storage capacity to avoid liquid hammer in the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a gas-liquid separator and a compressor. Background Art

[0002] The gas-liquid separator is the core component of the compressor and has an important impact on the performance and reliability of the compressor. The design of the oil return hole height is very important for the use of the gas-liquid separator. If the oil return hole is designed too low, the gas-liquid separator will store less refrigerant, and the compressor will be prone to liquid hammer, which will not only reduce the cooling capacity and energy efficiency, but also dilute the oil film, causing the lubrication of the moving parts to fail, increase wear and even get stuck; if the oil return hole is designed too high, the refrigerant oil will be difficult to return to the compressor, which will cause reliability problems such as compressor wear. Summary of the invention

[0003] The embodiments of the present invention provide a gas-liquid separator and a compressor to achieve sufficient liquid storage capacity and liquid return requirements of the gas-liquid separator.

[0004] The present invention provides a gas-liquid separator, comprising:

[0005] The shell has a storage space for storing liquid formed inside;

[0006] A pipeline is fixedly arranged in the accommodation space and is provided with an oil return hole;

[0007] The liquid pumping device comprises a shell and a liquid suction pipe, wherein the shell is fixedly arranged outside the pipeline, the shell is provided with a chamber, the chamber is communicated with the oil return hole, one end of the liquid suction pipe is fixedly connected with the shell and communicated with the chamber, and the other end extends to the bottom of the accommodating space;

[0008] The fluid flows along the pipeline, a negative pressure is formed in the chamber, the liquid suction pipe absorbs the liquid into the chamber, and the liquid flows to the pipeline through the oil return hole.

[0009] In the gas-liquid separator provided by the present invention, the chamber is provided with a flow hole connected to the oil return hole, and the flow hole is horizontally extended from the bottom end of the chamber toward the oil return hole to penetrate the chamber and the pipeline.

[0010] In the gas-liquid separator provided by the present invention, an opening is provided at the top end of the shell, and the opening connects the accommodating space and the chamber; wherein, fluid flows into the accommodating space, and the fluid enters the chamber along the opening and enters the pipeline along the circulation hole and the oil return hole.

[0011] In the gas-liquid separator provided by the present invention, the chamber is further provided with a guide groove, which is located in the bottom area of ​​the chamber. The guide groove gradually narrows from one end away from the flow hole toward the flow hole and is connected to the flow hole.

[0012] In the gas-liquid separator provided by the present invention, the liquid pumping device further comprises a pressurizing component, which is fixedly connected to the pipeline and is located above the chamber, and is used to increase the flow rate of the fluid in the chamber.

[0013] In the gas-liquid separator provided by the present invention, the pipeline includes a main channel and a accommodating chamber, the main channel is extended along the height direction of the shell, the accommodating chamber protrudes outward from one side of the main channel, and is surrounded by chamber walls, one of the chamber walls is provided with a through opening, the accommodating chamber is connected with the accommodating space and the chamber, and the booster is arranged in the main channel and the accommodating chamber.

[0014] In the gas-liquid separator provided by the present invention, the pressurizing member comprises a main impeller and an auxiliary impeller, the main impeller and the auxiliary impeller are coaxially connected, the main impeller is rotatably arranged in the main channel, and the auxiliary impeller is rotatably arranged in the accommodating chamber;

[0015] When the fluid is introduced into the main channel, the main impeller rotates to drive the auxiliary impeller to rotate, and the fluid in the accommodating space enters the accommodating cavity from the through port and flows into the chamber.

[0016] In the gas-liquid separator provided by the present invention, the shell is provided with a groove, the groove is formed by an inward depression of one side of the shell, and the groove passes through both sides of the shell along the height direction of the shell, and one side of the pipeline is embedded in the groove to be fixedly connected to the shell.

[0017] In the gas-liquid separator provided by the present invention, the liquid pumping device further comprises a counterweight, the counterweight is fixedly connected to the shell, and the counterweight and the shell are respectively located on both sides of the pipeline.

[0018] The present invention also provides a compressor, comprising:

[0019] A gas-liquid separator, wherein the gas-liquid separator is any one of the gas-liquid separators described above.

[0020] The present application has the pumping device fixedly installed on the outside of the pipeline, the housing is provided with the chamber, and the chamber is connected with the suction pipe and the oil return hole. When high-speed fluid flows inside the pipeline, the chamber generates negative pressure, so that the suction pipe absorbs the liquid at the bottom of the accommodating space into the chamber and enters the pipeline through the oil return hole, and finally enters the compressor to lubricate the compressor. Therefore, the oil return hole can be set at a high place, so that the gas-liquid separator has sufficient liquid storage capacity, and the liquid will not flow into the pipeline because the oil return hole is set too low, causing liquid hammer in the compressor; at the same time, the pumping device can extract the liquid at the bottom of the accommodating space into the pipeline according to the Venturi principle, thereby meeting the liquid return requirement of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] FIG1 is a cross-sectional view of a gas-liquid separator according to an embodiment of the present invention;

[0023] FIG2 is an assembly diagram of a pipeline and a liquid pumping device according to an embodiment of the present invention;

[0024] FIG3 is an assembly diagram of a counterweight member in an embodiment of the present invention;

[0025] FIG4 is a perspective view of a liquid extraction device according to an embodiment of the present invention;

[0026] FIG5 is a cross-sectional view of a liquid pumping device according to an embodiment of the present invention;

[0027] FIG6 is another cross-sectional view of the liquid pumping device according to an embodiment of the present invention;

[0028] FIG7 is an assembly diagram of a pressurizing member in an embodiment of the present invention;

[0029] FIG8 is a cross-sectional view of another pipeline and a liquid pumping device according to an embodiment of the present invention;

[0030] FIG9 is a perspective view of another pipeline in an embodiment of the present invention;

[0031] FIG10 is a structural diagram of a pressurizing member in an embodiment of the present invention;

[0032] The reference numerals in the figures are:

[0033] 1. Gas-liquid separator; 10. Shell; 11. Accommodating space; 20. Pipe; 21. Oil return hole; 22. Main channel; 23. Accommodating chamber; 24. Flange; 231. Through port; 30. Pumping device; 31. Shell; 310. Chamber; 311. Flow hole; 312. Guide groove; 320. Opening; 330. Groove; 32. Suction pipe; 33. Pressurizing element; 331. Main impeller; 332. Auxiliary impeller; 34. Counterweight. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0035] Reference Figures 1 to 10 As shown, it shows an embodiment of the gas-liquid separator 1 and the compressor of the present invention. The gas-liquid separator 1 includes a shell 10, a pipeline 20 and a liquid pumping device 30. The shell 10 is provided with a storage space 11 for storing liquid; the pipeline 20 is fixed in the storage space 11 and is provided with an oil return hole 21; the liquid pumping device 30 includes a shell 31 and a liquid suction pipe 32. The shell 31 is fixed outside the pipeline 20. The shell 31 is provided with a chamber 310. The chamber 310 is connected to the oil return hole 21. One end of the liquid suction pipe 32 is fixedly connected to the shell 31 and is connected to the chamber 310, and the other end extends to the bottom of the storage space 11; wherein, the fluid flows along the pipeline 20, the chamber 310 forms a negative pressure, the liquid suction pipe 32 sucks the liquid into the chamber 310, and flows to the pipeline 20 through the oil return hole 21.

[0036] Specifically, the gas-liquid separator 1 is used to separate gas and liquid, and store the separated liquid inside, so as to prevent the liquid from flowing to the compressor with the gas to cause liquid hammer of the compressor, resulting in a decrease in the energy efficiency of the compressor, and increased wear and jamming of the compressor; the gas-liquid separator 1 includes a shell 10, a pipeline 20 and a liquid pumping device 30; a receiving space 11 is provided inside the shell 10, and the receiving space 11 is used to store liquid, wherein the gas-liquid separator 1 in this embodiment is installed on the compressor, so the liquid includes liquid refrigerant and refrigerant oil, and the liquid refrigerant and the refrigerant oil are collected by the gas-liquid separator 1 and stored in the receiving space 11, and the refrigerant oil is precipitated to the bottom of the receiving space 11, and the refrigerant oil has lubricating and cooling effects.

[0037] The pipe 20 is fixedly arranged inside the accommodating space 11, and one end of the pipe 20 is connected with the accommodating space 11, so that the fluid in the accommodating space 11 can flow into the pipe 20, and flow to the outside of the gas-liquid separator 1 through the pipe 20, that is, the pipe 20 is used to transport the fluid, so that the fluid with liquid enters the gas-liquid separator 1 and is separated into liquid and gas through the gas-liquid separator 1, and the gas flows into the pipe 20 and flows to the outside of the gas-liquid separator 1 through the pipe 20, and the pipe 20 is provided with an oil return hole 21, and the oil return hole 21 connects the pipe 20 and the accommodating space 11, and the oil return hole 21 is used to transport part of the refrigerant oil stored at the bottom of the accommodating space 11 to the inside of the pipe 20, so that the refrigerant oil flows to the outside of the gas-liquid separator 1 with the fluid in the pipe 20, thereby entering the compressor to lubricate and cool the compressor.

[0038] The pumping device 30 is used to pump the refrigeration oil at the bottom of the storage space 11 into the pipe 20; the pumping device 30 is fixedly arranged on one side of the pipe 20 and is connected to the bottom of the storage space 11; the pumping device 30 includes a shell 31 and a liquid suction pipe 32, the shell 31 is fixedly connected to the outer wall of the pipe 20, one end of the liquid suction pipe 32 is fixedly connected to the shell 31, and the other end is extended toward the bottom of the storage space 11 until the other end of the liquid suction pipe 32 is located in the bottom space of the storage space 11, so that the liquid suction pipe 32 It can be in contact with the liquid at the bottom of the accommodating space 11, and the suction pipe 32 is used to transport the refrigerant oil at the bottom of the accommodating space 11 to the inside of the outer shell 31 so that the refrigerant oil enters the inside of the pipeline 20 through the oil return hole 21; a chamber 310 is provided inside the outer shell 31, and the chamber 310 is connected to the oil return hole 21, and the chamber 310 is connected to one end of the suction pipe 32, so that the liquid sucked by the suction pipe 32 enters the chamber 310 along with the suction pipe 32, and flows from the chamber 310 to the oil return hole 21 and enters the inside of the pipeline 20.

[0039] When the compressor is started, the compressor sucks in high-speed fluid, and the fluid enters the storage space 11 of the gas-liquid separator 1 from the outside, and the liquid part of the fluid is stored at the bottom of the storage space 11, and the gas part of the fluid enters the pipeline 20, and flows to the compressor at a high speed along the direction of the pipeline 20. Since the chamber 310 is connected with the pipeline 20, a negative pressure is formed inside the chamber 310. The liquid at the bottom of the storage space 11 is affected by the negative pressure of the chamber 310 and is sucked into the chamber 310 by the suction pipe 32, and flows into the pipeline 20 through the oil return hole 21, and finally flows to the compressor with the fluid to lubricate and cool the compressor.

[0040] More specifically, when the compressor operates at a low frequency, the refrigerant flow rate is small and the flow rate is low (the refrigerant refers to the fluid flowing in the pipe 20). The pressure difference between the inside and outside of the pipe 20 is small, and the flow rate of the refrigerant through the chamber 310 is low. According to the Venturi principle, the pressure difference between the upper and lower ends of the suction pipe 32 is small, so the amount of liquid suction is small (that is, the amount of liquid suction is small), and the liquid is stored in the gas-liquid separator 1.

[0041] When the compressor runs at high frequency, the pressure difference between the inside and outside of the pipeline 20 increases, and the flow rate of the refrigerant through the chamber 310 increases. According to the Venturi principle, the pressure difference between the upper and lower ends of the suction pipe 32 is large, so the suction amount is large. The liquid at the bottom of the gas-liquid separator 1 is extracted in large quantities through the suction pipe 32, and enters the suction chamber of the compressor through the oil return hole 21 to cool and lubricate the moving parts.

[0042] The present application provides the pumping device 30 on the outside of the pipe 20, and the housing 31 is provided with a chamber 310, and the chamber 310 is connected with the suction pipe 32 and the oil return hole 21. When the high-speed fluid flows through the inside of the pipe 20, the chamber 310 generates a negative pressure, so that the suction pipe 32 sucks the liquid at the bottom of the accommodating space 11 into the chamber 310 and enters the inside of the pipe 20 through the oil return hole 21, and finally enters the compressor along the direction of the pipe 20 and the flow direction of the fluid to lubricate the compressor, thereby realizing that the oil return hole 21 can be set at a high place, so that the gas-liquid separator 1 has There is sufficient liquid storage capacity, that is, the accommodating space 11 of the gas-liquid separator 1 can store more liquid, and the liquid will not flow into the inside of the pipe 20 because the return oil hole 21 is set too low, causing liquid hammer in the compressor; at the same time, the pumping device 30 can extract the liquid at the bottom of the accommodating space 11 into the inside of the pipe 20 according to the Venturi principle, thereby meeting the liquid return requirement of the compressor. In particular, the liquid mainly extracted by the pumping device 30 in this embodiment refers to refrigerant oil, so that no matter how high the return oil hole 21 is set, the refrigerant oil can be returned to the compressor to cool and lubricate the compressor, thereby avoiding wear of the compressor.

[0043] In one embodiment, referring to Figures 1 to 8 As shown, the chamber 310 is provided with a flow hole 311 connected with the oil return hole 21, and the flow hole 311 is horizontally extended from the bottom end of the chamber 310 toward the direction of the oil return hole 21 to penetrate the chamber 310 and the pipeline 20. Specifically, the chamber 310 is provided with a flow hole 311, and the flow hole 311 is connected with the oil return hole 21, and the flow hole 311 is arranged at the bottom end of the chamber 310, and the flow hole 311 is extended from the bottom end of the chamber 310 toward the direction of the oil return hole 21, and the flow hole 311 and the oil return hole 21 are horizontally connected, and the liquid suction pipe 32 introduces the liquid into the chamber 310, and the liquid flows along the flow hole 311 to the oil return hole 21 and enters the pipeline 20, and the flow hole 311 can make the liquid flow quickly to the inside of the pipeline 20, thereby improving the liquid extraction efficiency of the liquid extraction device 30.

[0044] More specifically, one end of the suction tube 32 is arranged in the circulation hole 311, that is, one end of the suction tube 32 is located between the bottom end of the chamber 310 and the oil return hole 21, thereby further improving the pumping efficiency of the pumping device 30 and improving the structural stability of the pumping device 30.

[0045] In a specific embodiment, refer to Figures 1 to 6As shown, an opening 320 is provided at the top of the housing 31, and the opening 320 connects the accommodating space 11 and the chamber 310; wherein, a fluid is introduced into the accommodating space 11, and the fluid enters the chamber 310 along the opening 320, and enters the pipeline 20 along the circulation hole 311 and the oil return hole 21. Specifically, an opening 320 is provided at the top of the shell 31, and the opening 320 connects the accommodating space 11 and the chamber 310, so that part of the fluid flowing into the accommodating space 11 flows to the pipe 20 and flows along the pipe 20 to the outside of the accommodating space 11, and the other part enters the chamber 310 through the opening 320, is collected in the chamber 310, and flows into the pipe 20 through the oil return hole 21 along the flow hole 311; the fluid flowing to the chamber 310 is large, and the fluid flows at a high speed in the flow hole 311, and the high-speed fluid will generate low pressure. The low pressure in the flow hole 311 draws up the liquid stored at the bottom of the gas-liquid separator 1, and finally the liquid and gas are mixed in the flow hole 311, and then enter the pipe 20 through the oil return hole 21, so as to realize rapid and increase the pressure difference between the pipe 20 and the pumping device 30 and the accommodating space 11, thereby improving the pumping efficiency of the pumping device 30.

[0046] In one embodiment, referring to Figure 4 and Figure 6 As shown, the chamber 310 is further provided with a guide groove 312 , which is located in the bottom area of ​​the chamber 310 . The guide groove 312 gradually narrows from one end away from the flow hole 311 toward the flow hole 311 and is connected to the flow hole 311 . Specifically, the chamber 310 is divided into a top area and a bottom area, the top area extends downward from the top of the shell 31 to connect with the bottom area, the bottom area is located at the bottom of the chamber 310, and extends to communicate with the circulation hole 311, and the bottom area of ​​the chamber 310 is provided with a guide groove 312, and the guide groove 312 is gradually narrowed from the side of the bottom area away from the circulation hole 311 toward the circulation hole 311 until it is connected with the circulation hole 311. The guide groove 312 can guide the fluid entering the chamber 310 from the opening 320 to the circulation hole 311, so that there is a transition area at the boundary of the circulation hole 311 and the chamber 310, so as to reduce the resistance of the fluid flowing from the chamber 310 to the circulation hole 311, increase the flow rate of the fluid, and make the pumping efficiency of the pumping device 30 higher.

[0047] In a specific embodiment, refer to Figures 7 to 10As shown, the pumping device 30 further includes a pressure booster 33, which is fixedly connected to the pipe 20 and is located above the chamber 310, and is used to increase the flow rate of the fluid in the chamber 310. Specifically, when the flow rate of the fluid in the pumping device 30 is so slow that the air pressure in the chamber 310 is insufficient for the suction pipe 32 to absorb the liquid at the bottom of the accommodating space 11, compressor wear will occur. Therefore, in this embodiment, the pumping device 30 further includes a pressure booster 33, and the pressure booster 33 is used to increase the flow rate of the fluid in the pumping device 30, so that the chamber 310 can form a sufficient pressure difference with the outside world, so that the suction pipe 32 can absorb the liquid into the chamber 310 and flow into the The booster 33 is fixed on the pipe 20 and is located above the opening 320. When the booster 33 is started, the booster 33 can increase the flow rate of the fluid entering the opening 320, the chamber 310 and the flow hole 311, so that the flow hole 311 forms a negative pressure, ensuring that the liquid can be sucked up into the flow hole 311 and flow to the oil return hole 21 into the pipe 20, while increasing the rate of sucking the liquid and improving work efficiency.

[0048] In particular, the booster 33 may be driven by electricity or mechanically, which is not limited here.

[0049] In one embodiment, referring to Figures 7 to 9As shown, the pipeline 20 includes a main channel 22 and a accommodating chamber 23. The main channel 22 is extended along the height direction of the shell 10. The accommodating chamber 23 protrudes from one side of the main channel 22 and is surrounded by chamber walls. One of the chamber walls is provided with a through opening 231. The accommodating chamber 23 is connected to the accommodating space 11 and the chamber 310. The booster 33 is arranged in the main channel 22 and the accommodating chamber 23. Specifically, the pipeline 20 includes a main channel 22 and a accommodating chamber 23, the main channel 22 extends along the height direction of the shell 10, most of the fluid flows to the compressor via the main channel 22, and the oil return hole 21 is connected to the main channel 22; the accommodating chamber 23 is also provided on one side of the main channel 22, and the accommodating chamber 23 is arranged above the pumping device 30, that is, the accommodating chamber 23 is arranged above the oil return hole 21, and the accommodating chamber 23 is used to accommodate the supercharger 33, and the accommodating chamber 23 is provided with a cavity wall all around, and one of the cavity walls is provided with a through opening 231, and the through opening 231 connects the accommodating space 11 and the accommodating chamber 23, and one side of the accommodating chamber 23 is separated from the main channel 22 by a cavity wall, and the cavity wall is provided with Flange 24, the flange 24 is used to fix the booster 33, the other side of the accommodating chamber 23 is connected to the opening 320, that is, the accommodating chamber 23 is connected to the accommodating space 11 and the chamber 310, the booster 33 is arranged in the main channel 22 and the accommodating chamber 23, so as to protect the booster 33, and the booster 33 runs in the main channel 22 and the accommodating chamber 23, so that the fluid can enter the accommodating chamber 23 from the through port 231, and enter the chamber 310 along the running direction of the booster 33, and finally flow to the circulation hole 311 and the oil return hole 21 to enter the main channel 22, so as to further increase the flow rate of the fluid in the chamber 310 and accelerate the suction efficiency of the pumping device 30.

[0050] In a specific embodiment, refer to Figures 7 to 10As shown, the supercharger 33 includes a main impeller 331 and an auxiliary impeller 332, and the main impeller 331 and the auxiliary impeller 332 are coaxially connected. The main impeller 331 is rotatably disposed in the main channel 22, and the auxiliary impeller 332 is rotatably disposed in the accommodating chamber 23; wherein, when the main channel 22 passes fluid, the main impeller 331 rotates to drive the auxiliary impeller 332 to rotate, and the fluid in the accommodating space 11 enters the accommodating chamber 23 from the through port 231 and flows to the chamber 310. Specifically, the supercharger 33 is a shaft-connected impeller device, and the supercharger 33 includes a main impeller 331 and an auxiliary impeller 332. The main impeller 331 and the auxiliary impeller 332 are coaxially connected, and the connecting shaft of the main impeller 331 and the auxiliary impeller 332 is arranged in the flange 24 on the cavity wall of the accommodating cavity 23 and the main channel 22, so that the rotation of the main impeller 331 can drive the auxiliary impeller 332 to rotate; the main impeller 331 is arranged in the main channel 22 and can rotate in the main channel 22, and the auxiliary impeller 332 is arranged in the accommodating cavity 23 and can rotate in the accommodating cavity 23; when the compressor inhales air, that is, when the main channel 22 enters the fluid, the fluid will push the main impeller 331 to rotate, so that The auxiliary impeller 332 is driven to rotate in the accommodating chamber 23, so that part of the fluid in the accommodating space 11 flows into the accommodating chamber 23 through the through port 231, and flows to the chamber 310 along the rotation direction of the auxiliary impeller 332, and finally flows to the main channel 22 through the flow hole 311 and the oil return hole 21, and flows to the compressor along the main channel 22; at this time, due to the action of the auxiliary impeller 332, the flow rate of the fluid in the chamber 310 and the flow hole 311 is accelerated, so that a larger pressure difference is formed between the flow hole 311 and the outside world, so that the liquid can be drawn into the flow hole 311 more quickly and flow to the main channel 22, thereby improving the pumping efficiency of the pumping device 30.

[0051] At the same time, in this embodiment, the fluid in the main channel 22 drives the main impeller 331 to rotate, and then drives the auxiliary impeller 332 to rotate, so as to increase the flow rate of the fluid in the chamber 310. No additional power device is required to drive the main impeller 331 and the auxiliary impeller 332, which reduces the working cost and saves the space occupied by the pumping device 30. The rotation speed of the main impeller 331 and the auxiliary impeller 332 is related to the flow rate of the fluid, that is, it is related to the operating frequency of the compressor, so that the use of the booster 33 is more in line with the actual operating conditions, thereby improving the applicability of the pumping device 30.

[0052] In one embodiment, referring to Figure 4 and Figure 6As shown, the housing 31 is provided with a groove 330, the groove 330 is formed by a side of the housing 31 being recessed inwardly, and the groove 330 penetrates both sides of the housing 31 along the height direction of the housing 31, and one side of the pipe 20 is embedded in the groove 330 to be fixedly connected with the housing 31. Specifically, one side of the housing 31 is provided with a groove 330, the groove 330 is formed by a side of the housing 31 being recessed inwardly, the groove 330 is located on one side of the housing 31, the groove 330 penetrates both sides of the housing 31 along the height direction of the housing 31, and the shape of the groove 330 is adapted to the shape of the pipe 20. When the pumping device 30 and the pipe 20 are assembled, one side of the pipe 20 is embedded in the groove 330, so that the housing 31 is fixedly arranged on one side of the pipe 20.

[0053] In this embodiment, the groove 330 is used to achieve fixed connection between the housing 31 and the pipe 20 , and the connection method is simple and the production cost is low.

[0054] In a specific embodiment, refer to Figure 3 As shown, the liquid pumping device 30 further includes a counterweight 34, and the counterweight 34 and the housing 31 are respectively fixed on both sides of the pipe 20. Specifically, since the housing 31 is fixed on one side of the pipe 20, it is easy for the center of gravity of the pipe 20 to shift, thereby causing the pipe 20 to easily vibrate and deform. To ensure the stability of the pipe 20, the counterweight 34 is provided on the other side of the pipe 20, and the counterweight 34 and the housing 31 are respectively fixed on both sides of the pipe 20, so that the two sides of the pipe 20 achieve force balance, thereby solving the vibration problem of the pipe 20 caused by the housing 31 and the liquid suction tube 32.

[0055] More specifically, the counterweight 34 is made of a material that is not corroded by refrigeration oil and refrigerant. Since metal materials are heavy and small in size, the counterweight 34 can be made of metal materials. At the same time, the counterweight 34 and the outer shell 31 can be integrated, that is, the counterweight 34 and the outer shell 31 are fixedly connected and sleeved on the outside of the pipe 20. They can be fixed by heat sleeve or welding, which is not limited here.

[0056] In another embodiment, in order to solve the vibration problem of the pipeline 20 caused by the shell 31 and the pipette 32 , it can also be solved by adding reinforcing ribs on the other side of the pipeline 20 .

[0057] The present embodiment also provides a compressor (not shown in the figure), which includes a gas-liquid separator 1. The gas-liquid separator 1 can adopt any gas-liquid separator 1 provided by the present invention. Since the specific structure and working principle of the gas-liquid separator 1 have been introduced in detail in the previous description, they will not be repeated here for the sake of brevity.

[0058] The compressor in this embodiment adopts the gas-liquid separator 1 provided by the present invention. The gas-liquid separator 1 has sufficient liquid storage capacity, and the oil return hole 21 of the gas-liquid separator 1 can meet the liquid return requirement of the compressor when it is at a high position, so that when the compressor is at a low frequency, the flow rate of the fluid is slow, and the gas-liquid separator 1 has sufficient liquid storage capacity; when the compressor is at a high frequency, the flow rate of the fluid is fast, and the liquid return amount of the gas pressure separator is increased, ensuring that the compressor is not prone to liquid hammer and wear problems.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A gas-liquid separator, characterized in that: include: The shell has a storage space for storing liquid formed inside; A pipeline is fixedly arranged in the accommodation space and is provided with an oil return hole; A liquid pumping device, comprising a shell and a liquid suction pipe, wherein the shell is fixedly arranged outside the pipeline, the shell is provided with a chamber, the chamber is communicated with the oil return hole, the chamber is provided with a flow hole communicated with the oil return hole, the flow hole is horizontally extended from the bottom end of the chamber toward the direction of the oil return hole to pass through the chamber and the pipeline, one end of the liquid suction pipe is fixedly connected to the shell and communicated with the chamber, and the other end extends to the bottom of the accommodating space; The fluid flows along the pipeline, a negative pressure is formed in the chamber, the liquid suction pipe absorbs the liquid into the chamber, and the liquid flows to the pipeline through the oil return hole.

2. The gas-liquid separator according to claim 1, characterized in that: The top of the shell is provided with an opening, and the opening communicates the accommodating space and the chamber; wherein, fluid flows into the accommodating space, and the fluid enters the chamber along the opening and enters the pipeline along the circulation hole and the oil return hole.

3. The gas-liquid separator according to claim 2, characterized in that: The chamber is further provided with a guide groove, which is located in the bottom area of ​​the chamber. The guide groove gradually narrows from one end away from the flow hole toward the flow hole and is connected to the flow hole.

4. The gas-liquid separator according to any one of claims 1 to 3, characterized in that: The liquid pumping device also includes a pressure booster, which is fixedly connected to the pipeline and located above the chamber, and is used to increase the flow rate of the fluid in the chamber.

5. The gas-liquid separator according to claim 4, characterized in that: The pipeline includes a main channel and a accommodating chamber, the main channel extends along the height direction of the shell, the accommodating chamber protrudes outward from one side of the main channel, and is surrounded by chamber walls, one of the chamber walls is provided with a through opening, the accommodating chamber is connected with the accommodating space and the chamber, and the booster is arranged in the main channel and the accommodating chamber.

6. The gas-liquid separator according to claim 5, characterized in that: The supercharging component comprises a main impeller and an auxiliary impeller, the main impeller and the auxiliary impeller are coaxially connected, the main impeller is rotatably arranged in the main channel, and the auxiliary impeller is rotatably arranged in the accommodating chamber; When the fluid is introduced into the main channel, the main impeller rotates to drive the auxiliary impeller to rotate, and the fluid in the accommodating space enters the accommodating cavity from the through port and flows into the chamber.

7. The gas-liquid separator according to claim 1, characterized in that: The shell is provided with a groove, which is formed by an inward depression of one side of the shell, and the groove passes through both sides of the shell along the height direction of the shell, and one side of the pipe is embedded in the groove to be fixedly connected with the shell.

8. The gas-liquid separator according to claim 1, characterized in that: The liquid pumping device also includes a counterweight, which is fixedly connected to the shell and is located on both sides of the pipeline with the shell.

9. A compressor, characterized in that: include: A gas-liquid separator, wherein the gas-liquid separator is the gas-liquid separator according to any one of claims 1 to 8.

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