Gas-liquid separation device

Abstract

A gas-liquid separation device, which comprises a housing, a tube, a filter and a first noise reduction member, wherein the housing has an accommodating cavity, and the tube has a tube line; the filter is in fixed connection or limited connection with the tube, and comprises a filter screen; the filter screen has mesh holes, with one side of each mesh hole being in communication with the tube line, and the other side thereof being in communication with the accommodating cavity; and the first noise reduction member is located in the accommodating cavity, and comprises a porous structure, at least part of the porous structure being arranged on an outer side of the filter screen, such that noise can be reduced.

Description

Gas-liquid separation device

[0001] This application claims priority to Chinese Patent Application No. 202410502071.5, filed on April 25, 2024, entitled "Gas-Liquid Separation Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of fluid control technology, specifically to a gas-liquid separation device. Background Technology

[0003] The main function of a gas-liquid separator is to separate the gas and liquid phases of the refrigerant, ensuring that the refrigerant entering the compressor is gaseous.

[0004] The gas-liquid separation device includes a pipe body with an oil return hole on the bottom side. When the refrigeration system is not running, liquid refrigerant enters through the oil return hole inside the pipe body, while gaseous refrigerant is above the liquid level. After the refrigeration system is started, the gaseous refrigerant inside the pipe body compresses the liquid refrigerant inside the pipe body. When the gaseous refrigerant compresses the liquid refrigerant to the point where it is exposed through the oil return hole, the gaseous refrigerant will spray out from the filter screen. The impact causes a large number of air bubbles to mix with the liquid refrigerant outside the pipe body, generating a certain amount of noise. Summary of the Invention

[0005] The purpose of this application is to provide a gas-liquid separation device that can reduce noise.

[0006] To achieve the above objectives, one embodiment of this application adopts the following technical solution:

[0007] A gas-liquid separation device includes a housing, a tube, a filter, and a first noise reduction component. The housing has a receiving cavity, and the tube has a pipe. The filter is fixedly connected or limitedly connected to the tube. The filter includes a filter screen with mesh openings. One side of the mesh openings communicates with the pipe, and the other side of the mesh openings communicates with the receiving cavity. The first noise reduction component is located within the receiving cavity and includes a porous structure, with at least a portion of the porous structure located on the outside of the filter screen.

[0008] In one embodiment of this application, the gas-liquid separation device includes a housing, a tube, a filter, and a first noise reduction component. The first noise reduction component includes a porous structure, with at least a portion of the porous structure located on the outside of the filter screen. Thus, when gaseous refrigerant inside the tube is ejected from the filter screen, the porous structure can disperse and reduce air bubbles, thereby reducing noise. Attached Figure Description

[0009] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the gas-liquid separation device provided in this application;

[0010] Figure 2 is a top view of the gas-liquid separation device in Figure 1;

[0011] Figure 3 is a cross-sectional view of the gas-liquid separation device in Figure 2 along plane AA;

[0012] Figure 4 is a cross-sectional view of another installation method of the molecular sieve package in Figure 3;

[0013] Figure 5 is an exploded view of the gas-liquid separation device in Figure 1 from a first-angle perspective;

[0014] Figure 6 is an exploded view of the gas-liquid separation device in Figure 1 from a second perspective;

[0015] Figure 7 is a three-dimensional structural diagram of the dispersion cup in Figure 5;

[0016] Figure 8 is a three-dimensional structural diagram of the filter in Figure 5.

[0017] Key component symbols: 100, Gas-liquid separator; 10, Shell; 11, Receiving cavity; 111, First wall surface; 112, Second wall surface; 20, Pipe body; 21, Pipeline; 22, First pipe section; 221, Outlet end; 23, Second pipe section; 231, Oil return hole; 24, Third pipe section; 241, Inlet end; 30, Filter; 31, Filter screen; 32, Output port; 33, Base; 34, First clamp; 35, Second clamp; 40, First noise reduction component; 41, Second receiving cavity; 42, Second noise reduction component; 50, End cap; 51, Air outlet; 52, Air inlet; 53, Sealing component; 60, Dispersing cup; 61, Baffle; 611, Guide groove; 62, Cup wall; 63, First limiting component; 64, Second limiting component; 65, Liquid separation section; 70, Molecular sieve bag.

[0018] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a more detailed explanation of the present invention. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] The terms “first,” “second,” “third,” and “fourth” used in this specification are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0021] It should be noted that the directional terms such as up, down, left, right, front, and back mentioned in this specification are based on the orientation in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] The present application will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Figures 1 to 6 illustrate an embodiment of a gas-liquid separation device 100. The gas-liquid separation device 100 includes a housing 10, a pipe 20, a filter 30, and a first noise reduction component 40. The housing 10 has a receiving cavity 11, and the pipe 20 has a pipe 21. The filter 30 is fixedly connected or limitedly connected to the pipe 20. The filter 30 has a filter screen 31 and an output port 32 that are interconnected. The filter screen 31 is connected to the receiving cavity 11, and the output port 32 is connected to the pipe 21. At least a portion of the first noise reduction component 40 includes a porous structure, and at least a portion of the porous structure is disposed on the outside of the filter screen 31. It should be noted that in the related technology, in the initial stage of the gas-liquid separation device 100, liquid refrigerant enters the pipe body 20 through the oil return hole 231; while the refrigerant above the liquid level is gaseous. After the gas-liquid separation device 100 is started, the gaseous refrigerant continuously compresses the liquid refrigerant located in the pipe body 20. When the gaseous refrigerant compresses the liquid refrigerant to the point where it is exposed through the oil return hole 231, the gaseous refrigerant will be ejected from the filter screen 31. The impact causes a large number of air bubbles to mix with the liquid refrigerant outside the pipe body 20, generating a certain amount of noise. In this embodiment, the first noise reduction component 40 is arranged radially outside the filter screen 31. When the gaseous refrigerant is ejected from the filter screen 31 through the outlet 32, the first noise reduction component 40 can play a certain buffering role, reducing the number of air bubbles and thus reducing noise. In addition, at least a portion of the first noise reduction component 40 is fixedly connected or limited to the first wall surface 111. The connection method can be by adhesive bonding or by limiting the first noise reduction component 40 to the first wall surface 111 through a limiting structure (not shown in the figure).

[0024] In this embodiment, the porous structure is a sponge-like structure, a honeycomb structure, or a foamed structure. The foamed structure here has multiple interconnected pores. Along the radial direction of the gas-liquid separation device 100, the porous structure surrounds the radial outer side of the filter screen 31. This allows the porous structure to better disperse and reduce air bubbles, thereby reducing noise. In some embodiments, the first noise reduction component 40 is fixedly connected or limited to the housing 10 or the tube 20. As long as the porous structure surrounds the radial outer side of the filter screen 31, the noise reduction effect can be achieved.

[0025] In this embodiment, the wall forming the receiving cavity 11 includes a first wall surface 111. Along the axial direction of the gas-liquid separation device 100, the filter screen 31 is close to the first wall surface 111 relative to the tube body 20. At least part of the first noise reduction component 40 is fixedly connected or limited to the first wall surface 111, which can better limit the first noise reduction component 40, thereby ensuring the noise reduction effect of the first noise reduction component 40.

[0026] The wall forming the receiving cavity 11 also includes a second wall surface 112. Along the radial direction of the gas-liquid separation device 100 (perpendicular to the direction shown by H in Figure 3), the size of the first noise-reducing component 40 is smaller than the size of the second wall surface 112, meaning there is a gap between the first noise-reducing component 40 and the second wall surface 112. Understandably, if the size of the first noise-reducing component 40 is larger than the size of the second wall surface 112, wrinkles are likely to occur, affecting the noise reduction effect. This size can be diameter, width, length, or area, etc. In this embodiment, the size is preferably diameter. It should be noted that the sponge-like structure, honeycomb structure, or foamed structure can absorb air bubbles ejected from the filter screen 31, and the sponge-like structure, honeycomb structure, or foamed structure can disperse and reduce the size of the air bubbles, thereby reducing noise.

[0027] The first noise reduction component 40 has a second receiving cavity 41, and at least part of the filter screen 31 is located in the second receiving cavity 41. In other words, along the axial direction of the gas-liquid separation device 100, at least part of the wall forming the second receiving cavity 41 is located radially outside the filter screen 31. The wall forming the second receiving cavity 41 is a sponge-like structure or a honeycomb structure, which can play a certain buffering role and reduce the number of bubbles.

[0028] Specifically, along the axial direction of the gas-liquid separator 100, the dimension of the wall forming the second receiving cavity 41 is greater than one-third the dimension of the filter screen 31. Understandably, the greater the height of the wall forming the second receiving cavity 41, the better the absorption effect of the first noise reduction element 40 on bubbles. In some embodiments, along the axial direction of the gas-liquid separator 100, the height of the wall forming the second receiving cavity 41 may also be greater than or equal to the height of the filter screen 31; in other words, in this embodiment, the filter screen 31 is completely located within the second receiving cavity 41, thus improving the absorption effect on bubbles.

[0029] In this embodiment, along the axial direction of the gas-liquid separator 100, the height of the wall forming the second receiving cavity 41 is 3mm to 5mm, and the gap between the wall forming the second receiving cavity 41 and the filter screen 31 is 1mm to 3mm. It should be noted that if the gap between the wall forming the second receiving cavity 41 and the filter screen 31 is too large, when the gaseous refrigerant is ejected from the filter screen 31 through the outlet 32, bubbles will be ejected from the gap, affecting the absorption of bubbles by the first noise reduction component 40. If the gap between the wall forming the second receiving cavity 41 and the filter screen 31 is too small, the wall forming the second receiving cavity 41 will block the liquid refrigerant to a certain extent, potentially causing blockage.

[0030] Please refer to Figure 3 for details. Specifically, the first noise reduction component 40 has a second receiving cavity 41. Along the radial direction of the gas-liquid separation device 100, the size of the second receiving cavity 41 is larger than the size of the filter screen 31. Along the axial direction of the gas-liquid separation device 100 (as shown by H in Figure 3), at least part of the wall forming the second receiving cavity 41 is located radially outside the filter screen 31. It should be noted that this size can be a diameter, width, length, or area, etc. In this embodiment, the size is preferably a diameter. It can be understood that in other embodiments, the second receiving cavity 41 can be a regular circle, ellipse, or square, or it can be an irregular shape, as long as the wall forming the second receiving cavity 41 is located radially outside the filter screen 31.

[0031] In this embodiment, the first noise reduction component 40 is preferably made of a soft material and can absorb or buffer air bubbles. Preferably, the first noise reduction component 40 in this embodiment is preferably, but not limited to, made of hydrogenated nitrile rubber or EPDM rubber, which can effectively buffer air bubbles.

[0032] Please refer to Figure 8 for details. The filter 30 includes a base 33, a first claw 34, and a second claw 35. The filter screen 31 is fixedly connected to the base 33 or is an integral structure. The filter screen 31 is located at the end of the base 33 near the first wall surface 111. The first claw 34 and the second claw 35 are both integral structures with the base 33. The first claw 34 and the second claw 35 engage with each other and abut against the tube body 20. It should be noted that the first claw 34, the second claw 35, and the base 33 can be integrally formed by injection molding, or they can be manufactured separately and then assembled together. The filter screen 31 and the base 33 can be integrally formed by insert molding, or they can be assembled and fixed together. The filter screen 31 has several meshes (not shown in the figure) to facilitate the passage of lubricating oil. In this embodiment, the base 33 is preferably a plastic part, and the filter screen is preferably a plastic or metal part. The oil return hole 231 penetrates the base 33 along the axial direction of the gas-liquid separation device 100.

[0033] As shown in Figures 3 to 6, the gas-liquid separation device 100 also includes a head 50 with an outlet 51. The pipe body 20 includes a first pipe section 22, a second pipe section 23, and a third pipe section 24. The first pipe section 22 is preferably a straight pipe structure. The first pipe section 22 is fixedly connected to the head 50 and communicates with the outlet 51. The second pipe section 23 is fixedly connected to the end of the first pipe section 22 facing away from the outlet 51 or is an integral structure. The filter 30 is fixedly connected to the second pipe section 23. The second pipe section 23 is in the shape of an inverted C. The other end of the second pipe section 23 is fixedly connected to the third pipe section 24 or is an integral structure. The filter 30 has an oil return hole 231, and at least part of the oil return hole 231 is located inside the pipe 21. It should be noted that, along the axial direction of the gas-liquid separator 100, the outlet end 221 of the first pipe section 22 is higher than the inlet end 241 of the third pipe section 24. The third pipe section 24 is located inside the receiving cavity 11 so that the gaseous refrigerant located in the receiving cavity 11 flows into the pipe 21 through the inlet end 241.

[0034] Further, please refer to Figure 7. The gas-liquid separation device 100 also includes a liquid dispersing cup 60. The end cap 50 has an air inlet 52. The liquid dispersing cup 60 is fixedly connected to the first pipe section 22. The liquid dispersing cup 60 is close to the air inlet 52 relative to the first noise reduction component 40. There is a gap between the liquid dispersing cup 60 and the air inlet 52. The liquid dispersing cup 60 can block the gas-liquid two-phase refrigerant output from the air inlet 52, thereby improving the refrigerant separation effect.

[0035] Please refer to Figures 3 to 7. The liquid dispersing cup 60 includes a baffle 61 and a cup wall 62. Along the axial direction of the gas-liquid separator 100, the cup wall 62 extends from the baffle 61 toward the first wall surface 111, and the cup wall 62 is arranged around the outer periphery of the baffle 61. There is a gap between the cup wall 62 and the second wall surface 112. It should be noted that the baffle 61 is circular, which can effectively block the gas-liquid two-phase refrigerant output from the air inlet 52, thereby improving the refrigerant separation effect. The cup wall 62 is arranged around the outer periphery of the baffle 61, and there is a gap between the cup wall 62 and the second wall surface 112. Along the axial direction of the gas-liquid separator 100, at least a portion of the third pipe section 24 extends from the second pipe section 23 to the cup wall 62. In this way, when the gas-liquid two-phase refrigerant output from the inlet 52 impacts the second wall surface 112, the cup wall 62 can play a certain blocking role, reducing the splashing of liquid refrigerant to the inlet end 241 of the third pipe section 24. If the liquid refrigerant enters the external compressor, it may cause liquid slugging and damage the compressor. Specifically, the liquid dispersing cup 60 also includes a first limiting member 63, which extends from the baffle 61 toward the first wall surface 111 along the axial direction of the gas-liquid separator 100. The first limiting member 63 is fixedly connected to the first pipe section 22. It should be noted that the first limiting member 63 passes through the dispersing cup 60 and is fixedly connected to the first pipe segment 22. The first limiting member 63 and the first pipe segment 22 can be fixed by an interference fit. The first limiting member 63 extends from the baffle 61 toward the first wall surface 111, which can better radially limit the first pipe segment 22. In some embodiments, the first pipe segment 22 is fixed to the end cap 50 by riveting, flaring, or welding.

[0036] In this embodiment, the gas-liquid separation device 100 further includes a sealing element 53. The end cap 50 has a limiting cavity (not shown in the figure), and the sealing element 53 is sleeved on the radially outer side of the first pipe section 22, with at least a portion of the sealing element 53 located in the limiting cavity. It should be noted that the sealing element 53 can be an O-ring, a D-ring, or an X-ring, etc., and the sealing element 53 can achieve a certain sealing effect.

[0037] Referring to Figure 6, more specifically, the dispersion cup 60 also includes a second limiting member 64. There are at least two second limiting members 64, which surround the radially outer side of the third pipe section 24. Adjacent second limiting members 64 are spaced apart. Along the axial direction of the gas-liquid separator 100, the second limiting members 64 extend from the baffle 61 toward the first wall surface 111, and are connected to the third pipe section 24 in a limiting manner. It should be noted that in this embodiment, there are four second limiting members 64. These four second limiting members 64 are arranged around the radially outer side of the third pipe section 24, and their limiting cooperation with the third pipe section 24 better restricts the third pipe section 24. Furthermore, the second limiting members 64 extend from the baffle 61 toward the first wall surface 111, thus better radially restricting the third pipe section 24. Understandably, the first limiting member 63 is fixedly connected to the first pipe segment 22, and the second limiting member 64 is limitedly connected to the third pipe segment 24, thus achieving the limitation of the entire pipe body 20.

[0038] Please refer to Figure 7 for details. The liquid distribution cup 60 includes a liquid distribution section 65, which is fixedly connected to or integrally formed with the baffle 61. The liquid distribution section 65 is conical in shape and is located along the axial direction of the gas-liquid separator 100, closer to the air inlet 52 relative to the baffle 61. The baffle 61 has at least one guide groove 611, which extends from the liquid distribution section 65 to the cup wall 62 along the radial direction of the gas-liquid separator 100. It should be noted that in this embodiment, the guide groove 611 extends from the liquid distribution section 65 to the cup wall 62, and there are multiple guide grooves 611. These multiple guide grooves 611 are arranged radially from the liquid distribution section 65, which can achieve a good guiding effect. Furthermore, the conical liquid distribution section 65 is at least partially positioned opposite the air inlet 52. When the air inlet 52 outputs a gas-liquid two-phase refrigerant, the gas-liquid two-phase refrigerant will first impact the liquid distribution section 65 to perform the first gas-liquid separation. The liquid distribution section 65 will then introduce the gas-liquid two-phase refrigerant into different guide channels 611. Guided by the guide channels 611, the liquid refrigerant will be guided to impact the second wall surface 112 to perform the second gas-liquid separation. The liquid refrigerant will flow along the second wall surface 112 to the bottom of the receiving cavity 11.

[0039] Please refer to Figure 3 for details. The gas-liquid separation device 100 also includes a molecular sieve pack 70 and a second noise reduction component 42. The molecular sieve pack 70 is fixedly connected to the tube body 20, and the second noise reduction component 42 covers the outer periphery of the molecular sieve pack 70. It should be noted that in this embodiment, the molecular sieve pack 70 is fixed to the tube body 20 by cable ties, and the second noise reduction component 42 is preferably made of a soft material, which can absorb or buffer air bubbles. Preferably, the second noise reduction component 42 in this embodiment includes, but is not limited to, hydrogenated nitrile rubber or EPDM rubber, which can better buffer air bubbles. It can be understood that when the liquid refrigerant level in the receiving cavity 11 gradually rises, if the air bubbles on the surface of the liquid refrigerant come into direct contact with the molecular sieve pack 70, they will burst, thereby generating a certain amount of noise. In this embodiment, the second noise reduction component 42 covers the outer periphery of the molecular sieve pack 70, so the second noise reduction component 42 can absorb or buffer air bubbles, thereby reducing the number of bursting air bubbles and thus reducing noise.

[0040] Please refer to Figure 4 for details. In some embodiments, the molecular sieve pack 70 is fixedly connected to the dispersing cup 60, and the second noise reduction component 42 covers the outer periphery of the molecular sieve pack 70. In this embodiment, the liquid surface of the liquid refrigerant will not contact the molecular sieve pack 70, which can also reduce the number of bubble bursts, thereby reducing noise. In addition, the molecular sieve pack 70 and the dispersing cup 60 can be fixed by adhesive or by cable ties.

[0041] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A gas-liquid separation device, characterized in that, It includes a housing (10), a tube (20), a filter (30) and a first noise reduction component (40), wherein the housing (10) has a receiving cavity (11) and the tube (20) has a pipe (21); The filter (30) is fixedly connected or limited to the pipe body (20). The filter (30) includes a filter screen (31). The filter screen (31) has mesh holes. One side of the mesh holes is connected to the pipe (21), and the other side of the mesh holes is connected to the receiving cavity (11). The first noise reduction element (40) is located inside the receiving cavity (11), and the first noise reduction element (40) includes a porous structure, at least a portion of which is located on the outside of the filter screen (31).

2. The gas-liquid separation device according to claim 1, characterized in that, The porous structure is a sponge-like structure or a honeycomb structure. Along the radial direction of the gas-liquid separation device (100), the porous structure surrounds the radial outer side of the filter screen (31). The first noise reduction component (40) is fixedly connected or limited to the housing (10) or the tube (20).

3. The gas-liquid separation device according to claim 2, characterized in that, The wall forming the receiving cavity (11) includes a first wall surface (111). Along the axial direction of the gas-liquid separation device (100), the filter screen (31) is close to the first wall surface (111) relative to the tube body (20). The first noise reduction component (40) is fixedly connected or limited to the first wall surface (111).

4. The gas-liquid separation device according to any one of claims 1 to 3, characterized in that, The first noise reduction component (40) has a second receiving cavity (41), at least a portion of the filter screen (31) is located in the second receiving cavity (41), and the wall forming the second receiving cavity (41) is a sponge-like structure or a honeycomb structure.

5. The gas-liquid separation device according to claim 4, characterized in that, The wall forming the receiving cavity (11) also includes a second wall surface (112). Along the radial direction of the gas-liquid separation device (100), the size of the first noise reduction element (40) is smaller than the size of the second wall surface (112); along the axial direction of the gas-liquid separation device (100), the size of the wall forming the second receiving cavity (41) is greater than one-third the size of the filter screen (31).

6. The gas-liquid separation device according to claim 4, characterized in that, Along the axial direction of the gas-liquid separation device (100), the wall of the second receiving cavity (41) has a size of 3 mm to 5 mm, and the gap between the wall of the second receiving cavity (41) and the filter screen (31) is 1 mm to 3 mm.

7. The gas-liquid separation device according to claim 3, characterized in that, The first noise reduction component (40) comprises hydrogenated nitrile rubber or EPDM rubber, and the first noise reduction component (40) is bonded to the first wall surface (111).

8. The gas-liquid separation apparatus according to any one of claims 1 to 3 and 5 to 7, characterized in that, The gas-liquid separation device (100) further includes a molecular sieve pack (70) and a second noise reduction component (42), wherein the molecular sieve pack (70) is fixedly connected to the tube body (20).

9. The gas-liquid separation apparatus according to any one of claims 1 to 3 and 5 to 7, characterized in that, The gas-liquid separation device (100) further includes a head (50) having an outlet (51). The pipe body (20) includes a first pipe section (22), a second pipe section (23), and a third pipe section (24). The first pipe section (22) is fixedly connected to the head (50) and communicates with the outlet (51). The filter (30) is fixedly connected to the second pipe section (23). The second pipe section (23) is fixedly connected to the first pipe section (22) and the third pipe section (24) or is an integral structure.

10. The gas-liquid separation device according to claim 9, characterized in that, The gas-liquid separation device (100) further includes a liquid dispersing cup (60), the end cap (50) has an air inlet (52), the liquid dispersing cup (60) is fixedly connected to the first pipe section (22), the liquid dispersing cup (60) is close to the air inlet (52) relative to the first noise reduction component (40), and there is a gap between the liquid dispersing cup (60) and the air inlet (52).

Images