Liquid separation structure and compressor

Abstract

The application provides a liquid separation structure and a compressor. The liquid separation structure comprises a cylinder body, the cylinder body has a containing cavity, the cylinder body has an air inlet pipe and an air outlet pipe which are in communication with the containing cavity; a filter screen assembly is located in the containing cavity, the filter screen assembly is used for filtering gas in the containing cavity; a liquid separation component is rotatably arranged in the containing cavity, the liquid separation component is provided with a flow-through opening, so that the gas flow entering from the air inlet pipe reaches the filter screen assembly after passing through the flow-through opening. By the above arrangement, the liquid separation component is arranged in the cylinder body of the liquid separation structure of the compressor and is installed between the liquid separator air inlet pipe and the filter screen assembly. When low-pressure gas enters the compressor from an evaporator, the gas first enters the liquid separation structure, and on one hand, the oil-gas-liquid mixed gas jetting onto the liquid separation component can separate a part of liquid refrigerant or refrigeration oil in the gas, and the liquid separation structure of the application solves the problem that the filter screen of the liquid separator of the compressor in the prior art is easily blocked.

Description

Technical Field

[0001] This invention relates to the field of compressors, and more specifically, to a liquid separation structure and a compressor. Background Technology

[0002] The compressor distributor is installed between the system evaporator and the compressor body. Its main function in the compressor is to separate excess liquid refrigerant from the refrigeration system, preventing liquid from entering the compressor and causing liquid slugging. Simultaneously, the refrigerant gas also contains compressor lubricating oil. The oil-gas-liquid mixture is separated by the distributor, allowing the lubricating oil to flow back to the pump body through a small hole at the bottom of the distributor's steel pipe, preventing lubricating oil loss and subsequent wear and tear on the compressor pump body.

[0003] However, in existing separators, after gas is drawn in through the straight pipe, it is directly sprayed onto the filter assembly. Because the filter assembly is close to the straight pipe, the oil brought back by the system is also directly sprayed onto the filter assembly. This causes some filter screen holes to become blocked momentarily during the air intake process, reducing the air intake flow area and generating significant intake resistance. Furthermore, this structure leads to incomplete gas-liquid separation, creating a risk of liquid hammer. Summary of the Invention

[0004] The main objective of this invention is to provide a liquid distribution structure and a compressor to solve the problem that the filter screen of the liquid distributor in the prior art is easily clogged.

[0005] To achieve the above objectives, according to one aspect of the present invention, a liquid-distributing structure is provided, comprising: a cylindrical body having a receiving cavity, the cylindrical body having an inlet pipe and an outlet pipe communicating with the receiving cavity; a filter assembly located within the receiving cavity, the filter assembly being used to filter gas within the receiving cavity; and a liquid-distributing component rotatably disposed within the receiving cavity, the liquid-distributing component being provided with a flow port so that airflow entering from the inlet pipe passes through the flow port and reaches the filter assembly.

[0006] Furthermore, the liquid separation structure also includes a bearing component located between the filter assembly and the air inlet pipe. The outer ring of the bearing component is connected to the cylinder body; the liquid separation component is connected to the inner ring of the bearing component; when the airflow passes through the flow port, the liquid separation component is driven to rotate by the airflow.

[0007] Furthermore, the shortest distance between the liquid separating component and the air inlet pipe is H1, and the shortest distance between the filter assembly and the air inlet pipe is H2; wherein, 0.4≤(H1 / H2)≤2.5.

[0008] Furthermore, the liquid separating component includes: a connecting ring, which is connected to the inner ring of the bearing component; a liquid separating plate, which is located inside the connecting ring, and the extending direction of the liquid separating plate is perpendicular to the extending direction of the air inlet pipe; the liquid separating plate is connected to the connecting ring, and the flow port is provided on the liquid separating plate.

[0009] Furthermore, the connecting ring includes a first connecting part and a second connecting part. The first connecting part and the second connecting part are located on opposite sides of the liquid distribution plate. The first connecting part is located on the side of the liquid distribution plate near the air inlet pipe. A blade portion is provided on the side of the liquid distribution plate near the air inlet pipe, and the blade portion protrudes from the surface of the liquid distribution plate.

[0010] Furthermore, there are at least two blade sections, each of which is a plate-like structure, and the angle between the extension direction of each of the at least two blade sections and the separating plate is β.

[0011] Furthermore, the flow port is a circular through hole, the axis of the flow port coincides with the rotation axis of the liquid separating component, and at least two blades are arranged around the flow port.

[0012] Furthermore, the separatory plate is provided with a protrusion that protrudes from the surface of the separatory plate, and the flow port is provided on the protrusion.

[0013] Furthermore, the liquid separating component includes a connecting ring, the inside of which is provided with a circular through hole, the axis of which coincides with the rotation axis of the liquid separating component, and a liquid separating groove is provided between the connecting ring and the connecting ring, with a protrusion located inside the liquid separating groove; and / or, the protrusion includes a first protrusion and a second protrusion, the first protrusion being located on the side of the liquid separating plate near the air inlet pipe, the second protrusion being located on the side of the liquid separating plate away from the air inlet pipe, and a flow port being located between the first protrusion and the second protrusion; and / or, at least a portion of the outer surface of the protrusion is an arc-shaped surface.

[0014] Furthermore, there are at least two flow ports, which are arranged at intervals; and / or, there are at least two flow ports, which are arranged in a centrally symmetrical manner with a predetermined axis as the center of symmetry; and / or, the liquid distribution component is sleeved on the air inlet pipe, the liquid distribution component is a ring structure, the outer diameter of the liquid distribution component is d, and the receiving cavity is a cylindrical cavity with an outer diameter of D; wherein, Dd≥2mm.

[0015] Furthermore, the liquid separation structure also includes: a partition plate disposed in the receiving cavity and connected to the cylinder; a connecting pipe passing through the partition plate, the connecting pipe being located at the end of the filter assembly away from the liquid separation component, one end of the connecting pipe having an air inlet disposed opposite to the filter assembly, and the other end of the connecting pipe being connected to an air outlet pipe; the partition plate and the connecting pipe forming a receiving groove.

[0016] According to another aspect of the present invention, a compressor is provided, including a liquid distribution structure, wherein the liquid distribution structure is as described above.

[0017] The present invention provides a liquid-distributing structure comprising a cylindrical body with a receiving cavity, an inlet pipe and an outlet pipe communicating with the receiving cavity; a filter assembly located within the receiving cavity, used to filter the gas within the receiving cavity; and a liquid-distributing component rotatably disposed within the receiving cavity, having a flow port so that airflow entering from the inlet pipe passes through the flow port and reaches the filter assembly. With this configuration, the liquid-distributing component is located within the cylindrical body of the compressor's liquid-distributing structure, installed between the distributor's inlet pipe and the filter assembly. When low-pressure gas enters the compressor from the evaporator, the gas first enters the liquid-distributing structure. On one hand, the oil-gas-liquid mixture sprayed onto the liquid-distributing component separates a portion of the liquid refrigerant or refrigeration oil from the gas. On the other hand, the gas passing through the flow port on the liquid-distributing component changes its original gas flow direction, allowing for better oil-gas separation, reducing the amount of oil adsorbed on the filter screen pores, preventing filter assembly blockage, reducing the suction resistance of the liquid-distributing structure, and solving the problem of easy clogging of the filter screen in the prior art compressor distributor. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of one embodiment of the liquid separation structure according to the present invention is shown;

[0020] Figure 2 A schematic diagram of another embodiment of the liquid separation structure of the present invention is shown;

[0021] Figure 3 A cross-sectional view of an embodiment 1 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0022] Figure 4 A top view of an embodiment 1 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0023] Figure 5 A cross-sectional view of an embodiment 2 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0024] Figure 6 A top view of an embodiment 2 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0025] Figure 7 A cross-sectional view of an embodiment 3 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0026] Figure 8 A top view of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown in Embodiment 3;

[0027] Figure 9 A cross-sectional view of an embodiment 4 of the liquid-dispensing component of the liquid-dispensing structure of the present invention is shown;

[0028] Figure 10 A top view of embodiment 4 of the liquid separation component of the liquid separation structure of the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 1. Cylinder; 11. Receiving cavity; 2. Inlet pipe; 3. Outlet pipe; 4. Filter assembly; 5. Liquid distribution component; 501. Connecting ring; 502. Liquid distribution plate; 503. Connecting ring; 51. Flow port; 52. First connecting part; 53. Second connecting part; 54. Blade part; 55. Protrusion; 551. First protrusion; 552. Second protrusion; 56. Liquid distribution tank; 6. Bearing component; 7. Partition plate; 8. Connecting pipe; 9. Receiving tank. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] See Figures 1 to 10 The liquid-distributing structure of this embodiment includes: a cylinder 1, which has a receiving cavity 11, and an inlet pipe 2 and an outlet pipe 3 communicating with the receiving cavity 11; a filter assembly 4, located inside the receiving cavity 11, which is used to filter the gas inside the receiving cavity 11; and a liquid-distributing component 5, rotatably disposed inside the receiving cavity 11, which has a flow port 51 so that the airflow entering from the inlet pipe 2 passes through the flow port 51 and reaches the filter assembly 4. With the above arrangement, the liquid-distributing component 5 is located inside the cylinder 1 of the compressor's liquid-distributing structure and is installed between the liquid distributor inlet pipe 2 and the filter assembly 4. When low-pressure gas enters the compressor from the evaporator, the gas first enters the liquid-distributing structure. On the one hand, the oil-gas-liquid mixture is sprayed onto the rotating liquid-distributing component 5, which separates a portion of the liquid refrigerant or refrigeration oil from the gas. On the other hand, as the gas passes through the flow port 51 on the liquid separator 5, it can change the original gas flow direction, so that the oil and gas can be separated better, the amount of oil adsorbed on the filter screen pores can be reduced, the filter screen assembly 4 can be prevented from clogging, the suction resistance of the liquid separator structure can be reduced, and the problem of easy clogging of the filter screen of the liquid separator of the compressor in the prior art can be solved.

[0033] In some embodiments, the liquid separation component 5 can be manufactured by forming methods such as stamping, machining, welding, riveting, and bonding.

[0034] In the liquid separation structure of this embodiment, the liquid separation structure also includes a bearing component 6, which is located between the filter screen assembly 4 and the air inlet pipe 2. The outer ring of the bearing component 6 is connected to the cylinder 1. The liquid separation component 5 is connected to the inner ring of the bearing component 6. When the airflow passes through the flow port 51, it can drive the liquid separation component 5 to rotate, so that the liquid separation component 5 has an oil-throwing effect, which increases the efficiency of liquid separation.

[0035] In this embodiment, the liquid separating component 5 is connected to the inner diameter of the upper cylinder 1 by a bearing component 6. The bearing component 6 is driven to rotate by gas force, and the bearing component 6 drives the liquid separating component 5 to rotate. No additional power is required, which reduces the impact on the power consumption of the compressor.

[0036] Specifically, the outer ring of the bearing component 6 is fixed to the inner side of the upper cylinder of the separator with an interference fit, and the inner ring is firmly connected to the outer ring of the separator component 5 with an interference fit.

[0037] In the liquid separation structure of this embodiment, the shortest distance between the liquid separation component 5 and the air inlet pipe 2 is H1, and the shortest distance between the filter assembly 4 and the air inlet pipe 2 is H2; wherein, 0.4≤(H1-H2) / H2≤2.5.

[0038] With the above setup, the installation position of the liquid separator 5 is related to the oil-gas-liquid separation effect. If it is closer to the straight pipe inlet pipe 2 of the liquid separator, the liquid separation effect is better, but the suction resistance is increased, which affects the energy efficiency.

[0039] In the liquid separation structure of this embodiment, the liquid separation component 5 includes a connecting ring 501, which is connected to the inner ring of the bearing component 6; a liquid separation plate 502, which is located inside the connecting ring 501, and the extension direction of the liquid separation plate 502 is perpendicular to the extension direction of the air inlet pipe 2; the liquid separation plate 502 is connected to the connecting ring 501, and the flow port 51 is provided on the liquid separation plate 502.

[0040] In the liquid distribution structure of this embodiment, the connecting ring 501 includes a first connecting part 52 and a second connecting part 53. The first connecting part 52 and the second connecting part 53 are respectively located on opposite sides of the liquid distribution plate 502. The first connecting part 52 is located on the side of the liquid distribution plate 502 near the air inlet pipe 2. A blade part 54 is provided on the side of the liquid distribution plate 502 near the air inlet pipe 2. The blade part 54 protrudes from the surface of the liquid distribution plate 502.

[0041] In the liquid separation structure of this embodiment, there are at least two blade portions 54, and both blade portions 54 are plate-shaped structures. The angle between the extension direction of the at least two blade portions 54 and the liquid separation plate 502 is β.

[0042] In the liquid separation structure of this embodiment, the flow port 51 is a circular through hole, the axis of the flow port 51 coincides with the rotation axis of the liquid separation component 5, and at least two blade portions 54 are arranged around the flow port 51.

[0043] In the liquid separation structure of this embodiment, a protrusion 55 is provided on the liquid separation plate 502, the protrusion 55 protrudes from the surface of the liquid separation plate 502, and the flow port 51 is provided on the protrusion 55.

[0044] In the liquid-dispensing structure of this embodiment, the liquid-dispensing component 5 includes a connecting ring 503, and a circular through hole is provided inside the connecting ring 503. The axis of the circular through hole coincides with the rotation axis of the liquid-dispensing component 5. A liquid-dispensing groove 56 is provided between the connecting ring 503 and the connecting ring 501. A protrusion 55 is located in the liquid-dispensing groove 56. And / or, the protrusion 55 includes a first protrusion 551 and a second protrusion 552. The first protrusion 551 is located on the side of the liquid-dispensing plate 502 near the air inlet pipe 2, and the second protrusion 552 is located on the side of the liquid-dispensing plate 502 away from the air inlet pipe 2. A flow port 51 is located between the first protrusion 551 and the second protrusion 552. And / or, at least a portion of the outer surface of the protrusion 55 is an arc-shaped surface.

[0045] In the liquid separation structure of this embodiment, there are at least two flow ports 51, which are arranged at intervals; and / or, there are at least two flow ports 51, which are arranged in a centrally symmetrical manner with the rotation axis of the liquid separation component 5 as the center of symmetry; and / or, the liquid separation component 5 is sleeved on the air inlet pipe 2, the liquid separation component 5 is a ring structure, the outer diameter of the liquid separation component 5 is d, and the receiving cavity 11 is a cylindrical cavity with an outer diameter of D; wherein, Dd≥2mm.

[0046] Specifically, the liquid separating component 5 has vent holes on its plane, with a maximum of 3 vent holes. The flow port 51 can be circular, square, or irregularly shaped. The total area S of the flow ports 51 is not less than the total area of ​​the openings on the filter screen support.

[0047] In this embodiment, the liquid separation structure further includes: a partition 7 disposed within the receiving cavity 11, the partition 7 being connected to the cylinder 1; a connecting pipe 8 passing through the partition 7, the connecting pipe 8 being located at the end of the filter assembly 4 furthest from the liquid separation component 5, one end of the connecting pipe 8 having an air inlet opposite to the filter assembly 4, and the other end of the connecting pipe 8 communicating with the air outlet pipe 3; the partition 7 and the connecting pipe 8 forming a receiving tank 9. With the above arrangement, the receiving tank 9 can be used to store the separated oil.

[0048] The compressor in this embodiment includes a liquid distribution structure, which is the liquid distribution structure described above.

[0049] In this embodiment, the liquid-distributing component 5 of the liquid-distributing structure is installed between the air inlet pipe 2 and the filter screen assembly 4 of the cylinder 1. The liquid-distributing structure includes a bearing component 6 and at least one liquid-distributing component 5. The outer ring of the bearing component 6 is connected to the inner diameter of the liquid distributor cylinder 1, and the inner ring of the bearing component 6 is connected to the liquid-distributing component 5; or, the inner ring of the bearing component 6 is connected to the outer diameter of the air inlet pipe 2, and the outer ring of the bearing component 6 is connected to the liquid-distributing component 5.

[0050] When low-pressure gas enters the compressor from the evaporator, it first enters the liquid-liquid separator. On one hand, the oil-gas-liquid mixture is sprayed onto the rotating liquid-liquid separator 5, separating some of the liquid refrigerant or refrigeration oil from the gas. On the other hand, the gas force drives the bearing component 6 to rotate, which in turn drives the liquid-liquid separator 5 to rotate, generating centrifugal force. This accelerates oil-gas-liquid separation and changes the refrigerant flow direction, preventing unvaporized refrigerant liquid from entering the compressor's suction chamber, avoiding liquid slugging, and improving compressor reliability. Simultaneously, it reduces the amount of oil adsorbed on the filter screen, lowering suction resistance and improving compressor efficiency. This structure accelerates oil-gas separation, reduces the oil content in the refrigerant, increases the compressor's cooling capacity, and improves lubrication.

[0051] Example 1:

[0052] See Figure 3 , Figure 4 In this embodiment, the liquid distribution plate 502 can be welded onto the connecting ring 501 or integrally stamped. The liquid distribution plate 502 has two or more blade portions 54 in the middle. The angle between the blades and the plate is β, where 0° < β < 90°. The tilting direction can be left or right, but the tilting direction of the blade portions 54 on the same liquid distribution component 5 should be consistent.

[0053] Example 2:

[0054] See Figure 5 , Figure 6 In this embodiment, the liquid distribution plate 502 can be welded to the connecting ring 501, and the connecting ring 503 can be welded to the liquid distribution plate 502, or it can be integrally stamped. The liquid distribution plate 502 has two or more blade portions 54 in the middle. The blade portions 54 are installed at an angle β with the liquid distribution plate 502, where 0° < β < 90°. The tilting direction can be left or right, but the tilting direction of the blades on the same liquid distribution component 5 should be consistent.

[0055] Example 3:

[0056] See Figure 7 , Figure 8 The liquid separating component 5 has a circular through hole in the middle, the liquid separating plate 502 has a raised protrusion 55, and the connecting ring 503 has a vent hole.

[0057] Example 4:

[0058] The separator plate 502 has more than three flow ports 51. Each flow port 51 is composed of two corresponding semi-circular holes. In this way, when the airflow passes through the flow port 51, the lateral area is increased, the direction of refrigerant flow is changed, and the oil-spinning effect is accelerated.

[0059] Example 5: Based on the structure of Example 3, the number of blade sections 54 can be increased to improve the liquid separation effect.

[0060] Example 6: The number of blade sections 54 can be increased in the structure of Example 4 to improve the liquid separation effect.

[0061] In other embodiments, the flow port 51 may be circular, square, or irregularly shaped.

[0062] In other embodiments, the liquid separating component 5, in addition to the structure in the embodiments, may also be bowl-shaped, fan-shaped, I-shaped, T-shaped, inverted T-shaped, etc.

[0063] In other embodiments, the material of the liquid separation component 5 may also be a lightweight metal or a non-metallic material.

[0064] In other embodiments, the liquid separation component 5 can be formed by stamping, machining, welding, riveting, bonding, or other forming methods.

[0065] In other embodiments, the liquid separating component 5 is installed on the outside of the straight tube of the liquid separator. The inner diameter of the bearing component 6 is connected to the outer upper flange of the air inlet pipe 2, and the inner diameter of the liquid separating component 5 is connected to the outer diameter of the bearing component 6. Dd ≥ 2mm. Air is discharged from the side of the air inlet pipe 2 of the liquid separator structure.

[0066] In other embodiments, the compressor may use multiple oil-gas-liquid separation structures simultaneously.

[0067] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0068] The liquid-distributing structure of the present invention includes a cylindrical body 1, which has a receiving cavity 11 and an inlet pipe 2 and an outlet pipe 3 communicating with the receiving cavity 11; a filter assembly 4, located inside the receiving cavity 11, for filtering the gas inside the receiving cavity 11; and a liquid-distributing component 5, located inside the receiving cavity 11, which has a flow port 51 so that the airflow entering from the inlet pipe 2 passes through the flow port 51 and reaches the filter assembly 4. With the above arrangement, the liquid-distributing component 5 is located inside the cylindrical body 1 of the compressor's liquid-distributing structure, installed between the liquid distributor inlet pipe 2 and the filter assembly 4. When low-pressure gas enters the compressor from the evaporator, the gas first enters the liquid-distributing structure. On the one hand, the oil-gas-liquid mixture sprayed onto the liquid-distributing component 5 separates a portion of the liquid refrigerant or refrigeration oil from the gas. On the other hand, as the gas passes through the flow port 51 on the liquid separator 5, it can change the original gas flow direction, so that the oil and gas can be separated better, the amount of oil adsorbed on the filter screen pores can be reduced, the filter screen assembly 4 can be prevented from clogging, the suction resistance of the liquid separator structure can be reduced, and the problem of easy clogging of the filter screen of the liquid separator of the compressor in the prior art can be solved.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0071] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0072] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0073] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A liquid separation structure, characterized by, The utility model relates to a filter device, including: a cylinder (1) having a containing cavity (11), the cylinder (1) having an air inlet pipe (2) and an air outlet pipe (3) in communication with the containing cavity (11); a filter screen assembly (4) located in the containing cavity (11) and used for filtering gas in the containing cavity (11); a liquid separation component (5) rotatably arranged in the containing cavity (11), the liquid separation component (5) being provided with a flow-through opening (51) so that the gas flow entering from the air inlet pipe (2) reaches the filter screen assembly (4) after passing through the flow-through opening (51); the liquid separation structure further comprises a bearing component (6) located between the filter screen assembly (4) and the air inlet pipe (2), an outer ring of the bearing component (6) being connected with the cylinder (1), and an inner ring of the bearing component (6) being connected with the liquid separation component (5); when the gas flow passes through the flow-through opening (51), the liquid separation component (5) is driven to rotate by the gas flow; the liquid separation component (5) comprises: a connecting ring (501) connected with the inner ring of the bearing component (6); a liquid separation plate (502) located in the connecting ring (501), the liquid separation plate (502) being arranged in a direction perpendicular to the extending direction of the air inlet pipe (2), the liquid separation plate (502) being connected with the connecting ring (501), and the flow-through opening (51) being arranged on the liquid separation plate (502); a vane portion (54) is arranged on the side of the liquid separation plate (502) close to the air inlet pipe (2), the vane portion (54) being arranged protruding from the surface of the liquid separation plate (502), the vane portion (54) being at least two, the at least two vane portions (54) each being a plate structure, and the included angle between the extending direction of the at least two vane portions (54) and the liquid separation plate (502) being β.

2. The liquid separation structure according to claim 1, wherein The shortest distance between the liquid separation component (5) and the air inlet pipe (2) is H1, and the shortest distance between the filter screen assembly (4) and the air inlet pipe (2) is H2; wherein 0.4≤(H1-H2) / H2≤2.

5.

3. The liquid separation structure according to claim 2, wherein The connecting ring (501) comprises a first connecting portion (52) and a second connecting portion (53), the first connecting portion (52) and the second connecting portion (53) being respectively located on the opposite sides of the liquid separation plate (502), and the first connecting portion (52) being located on the side of the liquid separation plate (502) close to the air inlet pipe (2).

4. The liquid separation structure according to claim 3, wherein The flow-through opening (51) is a circular through hole, the axis of the flow-through opening (51) coincides with the rotation axis of the liquid separation component (5), and the at least two vane portions (54) are arranged around the flow-through opening (51).

5. The liquid separation structure according to claim 3, wherein A protruding portion (55) is arranged on the liquid separation plate (502), the protruding portion (55) being arranged protruding from the surface of the liquid separation plate (502), and the flow-through opening (51) being arranged on the protruding portion (55).

6. The liquid separation structure according to claim 5, characterized in that, the liquid separation component (5) comprises a communication ring (503) provided with a circular through hole inside, the axis of the circular through hole coincides with the rotation axis of the liquid separation component (5), the communication ring (503) and the connecting ring (501) have a liquid separation groove (56) therebetween, and the protruding part (55) is located in the liquid separation groove (56); and / or, the protruding part (55) comprises a first protruding part (551) and a second protruding part (552), the first protruding part (551) is located on the side of the liquid separation plate (502) close to the air inlet pipe (2), the second protruding part (552) is located on the side of the liquid separation plate (502) away from the air inlet pipe (2), and the flow passage (51) is located between the first protruding part (551) and the second protruding part (552); and / or, at least part of the outer surface of the protruding part (55) is an arc surface.

7. The liquid separation structure according to claim 1, characterized in that, the flow passage (51) is at least two, and the at least two flow passages (51) are arranged at intervals; and / or, the flow passage (51) is at least two, and the at least two flow passages (51) are arranged in central symmetry with a predetermined axis as the center of symmetry; and / or, the liquid separation component (5) is sleeved on the air inlet pipe (2), the liquid separation component (5) is in a ring structure, the outer diameter of the liquid separation component (5) is d, the containing cavity (11) is a cylindrical cavity, and the outer diameter of the containing cavity (11) is D; wherein, D-d≥2mm.

8. The liquid separation structure according to claim 1, wherein The liquid separation structure further comprises: a partition plate (7) arranged in the containing cavity (11), the partition plate (7) is connected with the cylinder (1); a connecting pipe (8) penetrating through the partition plate (7), the connecting pipe (8) is located at the end of the filter screen assembly (4) away from the liquid separation component (5), one end of the connecting pipe (8) has an air inlet arranged opposite to the filter screen assembly (4), the other end of the connecting pipe (8) is in communication with the air outlet pipe (3), and the partition plate (7) and the connecting pipe (8) enclose a containing groove (9).

9. A compressor comprising a liquid separation structure, characterized by, The liquid separation structure is the liquid separation structure according to any one of claims 1 to 8.

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