Horizontal oil separator structure of compressor

Abstract

The utility model relates to the technical field of compressors, and particularly discloses a horizontal oil separator structure of a compressor, which is characterized in that a first oil separation cavity is arranged in a rear cover and is communicated with a compression cavity, a second oil separation cavity is arranged in an extension part and is communicated with the first oil separation cavity, the extension part is provided with an exhaust port, and the exhaust port is communicated with the second oil separation cavity; the bottom wall of the second oil separation cavity is obliquely arranged downwards in the first direction, an oil return channel is formed in the rear cover, an oil pool is arranged at the bottom of the rear cover, and the oil return channel communicates with the first oil separation cavity and the second oil separation cavity at the same time and is used for enabling lubricating oil to flow back to the oil pool. The idle space of the extension part of the shell is effectively utilized, and the exhaust port and the second oil separation cavity are arranged in the extension part, so that the internal structure of the rear cover is further simplified, the size of the rear cover is reduced, the overall length of the compressor is greatly reduced, the overall structure of the compressor is simplified, and the utilization rate of the in-vehicle installation space is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a structure for a horizontal oil separator for a compressor. Background Technology

[0002] The compressor is a core component of refrigeration, air conditioning, industrial gas, and power systems. It is responsible for compressing low-pressure gases into high-pressure gases to provide power for energy conversion and fluid transport. The compressor contains lubricating oil to ensure the lubrication and sealing of moving friction parts. Existing compressors are equipped with an oil separator to separate the lubricating oil carried by the high-temperature refrigerant during the discharge process. This allows the lubricating oil to return to the compressor's interior, preventing a reduction in the oil level inside the compressor due to refrigerant discharge, which could compromise the compressor's operational stability.

[0003] Since the compressor's exhaust process mainly takes place inside the rear cover, the oil separator and refrigerant exhaust port are usually located inside the compressor's rear cover. This makes the oil return structure and exhaust structure inside the rear cover complex and cumbersome, resulting in a higher rear cover for the compressor, a significant increase in the overall length of the compressor, an increase in the volume space occupied, and low utilization of the vehicle's interior installation space.

[0004] Therefore, there is an urgent need for a horizontal oil separator structure for compressors to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a horizontal oil separator structure for compressors, which can simplify the overall structure of the compressor and further improve its space utilization.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a horizontal oil separator structure for a compressor. The compressor includes a housing, a rear cover, and a compression assembly. The housing includes a shell and an extension protruding from the outer side wall of the shell. The shell has a receiving cavity and an intake port. The compression assembly is placed in the receiving cavity and has a compression chamber communicating with the intake port. The compression chamber is used to compress refrigerant gas. The rear cover is disposed on the housing. The horizontal oil separator structure for the compressor includes:

[0008] A first oil separation chamber is disposed within the rear cover and is connected to the compression chamber;

[0009] The second oil separation chamber is located within the extension and is connected to the first oil separation chamber. The extension has an exhaust port connected to the second oil separation chamber. The bottom wall of the second oil separation chamber is inclined downward along a first direction. The rear cover has an oil return channel and an oil sump at the bottom. The oil return channel connects both the first and second oil separation chambers and is used to return lubricating oil to the oil sump.

[0010] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressor, the extension extends along the first direction, and the extension has a first end and a second end along its own length direction. The first end cooperates with the rear cover, and the exhaust port is opened at the second end.

[0011] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressors, the second oil separation chamber is frustum-shaped, and the inner diameter of the second oil separation chamber gradually decreases in the direction from the first end to the second end.

[0012] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressor, an exhaust circuit is also provided inside the rear cover. The exhaust circuit includes an exhaust chamber and an exhaust channel. The exhaust chamber is connected to the compression chamber, and the exhaust channel is connected to the exhaust chamber and the first oil separation chamber.

[0013] As a preferred technical solution for the above-mentioned horizontal oil separator structure of the compressor, a partition is provided inside the rear cover, and the partition separates the oil return channel from the exhaust circuit.

[0014] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressors, the horizontal oil separator structure for compressors further includes a sealing gasket, which is disposed between the outer casing and the rear cover.

[0015] As a preferred technical solution of the above-mentioned horizontal oil separator structure of the compressor, the sealing gasket has a first opening and a second opening. The first opening connects the first oil separation chamber and the second oil separation chamber, and the second opening connects the exhaust chamber and the compression chamber.

[0016] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressors, the horizontal oil separator structure for compressors further includes an oil return groove, which is recessed in the bottom wall of the second oil separation chamber.

[0017] As a preferred technical solution of the above-mentioned horizontal oil separator structure for compressors, the rear cover includes a first cover portion and a second cover portion connected in sequence, the first cover portion covering the extension portion, and the second cover portion covering the housing.

[0018] As a preferred technical solution for the above-mentioned horizontal oil separator structure of the compressor, the extension is integrally formed with the housing.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model provides a horizontal oil separator structure for a compressor. The compressor includes a housing, a rear cover, and a compression assembly. The housing includes a shell and an extension protruding from the outer wall of the shell. The shell has a receiving cavity and an air intake port. The compression assembly is placed in the receiving cavity and has a compression chamber communicating with the air intake port. The compression chamber is used to compress refrigerant gas. The rear cover is placed on the housing. The horizontal oil separator structure for the compressor includes: a first oil separation chamber, a second oil separation chamber, and an oil return channel. The first oil separation chamber is located inside the rear cover and communicates with the compression chamber. The second oil separation chamber is located inside the extension and communicates with the first oil separation chamber. The extension has an exhaust port that communicates with the second oil separation chamber. The bottom wall of the second oil separation chamber is inclined downward along a first direction. The rear cover has an oil return channel and an oil sump at the bottom of the rear cover. The oil return channel communicates with both the first and second oil separation chambers and is used to return lubricating oil to the oil sump. In this configuration, the low-temperature, low-pressure refrigerant gas enters the compression chamber through the intake port and is compressed into a high-temperature, high-pressure refrigerant gas. It then sequentially enters the first and second oil separation chambers tangentially, rotating around their walls. Due to the density difference between the lubricating oil and the refrigerant gas, the lubricating oil separates under gravity during rotation. The lubricating oil separated in the first oil separation chamber falls into the oil return channel and flows back to the oil sump, subsequently reaching the compressor pump body for lubrication via other oil return structures. The lubricating oil separated in the second oil separation chamber falls onto the downward-sloping bottom wall of the second oil separation chamber and flows back to the oil return channel under gravity. The refrigerant gas, after the lubricating oil is separated, has an increasingly smaller rotation radius until it is discharged through the exhaust port. This design effectively utilizes the unused space in the extension of the outer casing, placing the exhaust port and the second oil separation chamber within the extension. This further simplifies the internal structure of the rear cover, reduces its volume, significantly decreases the overall length of the compressor, simplifies the overall compressor structure, and improves the utilization rate of its in-vehicle installation space. Attached Figure Description

[0021] Figure 1 A cross-sectional view of the horizontal oil separator structure for a compressor provided by this utility model;

[0022] Figure 2 A schematic diagram of the compressor and controller provided by this utility model;

[0023] Figure 3 A schematic diagram of the structure of the back cover and extension provided by this utility model;

[0024] Figure 4A schematic diagram of the structure of the back cover provided by this utility model;

[0025] Figure 5 A schematic diagram of the structure of the sealing gasket provided by this utility model.

[0026] in:

[0027] 1. Outer shell; 101. Housing; 102. Extension;

[0028] 2. Back cover; 201. First covering part; 202. Second covering part;

[0029] 3. Air intake port; 4. First oil separation chamber; 5. Second oil separation chamber; 6. Exhaust port; 7. Oil return channel; 8. Oil sump;

[0030] 9. Exhaust circuit; 901. Exhaust chamber; 902. Exhaust passage;

[0031] 10. Partition;

[0032] 11. Sealing gasket; 111. First opening; 112. Second opening;

[0033] 12. Oil return tank; 13. Controller. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0036] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1 to 5As shown, this embodiment provides a horizontal oil separator structure for a compressor. The compressor includes a housing 1, a rear cover 2, and a compression assembly (not shown in the figure). The housing 1 includes a shell 101 and an extension 102 protruding from the outer side wall of the shell 101. The shell 101 has a receiving cavity and an intake port 3. The compression assembly is placed in the receiving cavity and has a compression chamber communicating with the intake port 3. The compression chamber is used to compress refrigerant gas. The rear cover 2 covers the housing 1. The horizontal oil separator structure for the compressor includes: a first oil separation chamber 4 and a second oil separation chamber. 5 and oil return channel 7, the first oil separation chamber 4 is located in the rear cover 2 and is connected to the compression chamber, the second oil separation chamber 5 is located in the extension 102 and is connected to the first oil separation chamber 4, the extension 102 is provided with an exhaust port 6, the exhaust port 6 is connected to the second oil separation chamber 5, the bottom wall of the second oil separation chamber 5 is inclined downward along the first direction, the rear cover 2 is provided with an oil return channel 7, and the bottom of the rear cover 2 is provided with an oil pool 8. The oil return channel 7 connects the first oil separation chamber 4 and the second oil separation chamber 5 and is used to return the lubricating oil to the oil pool 8. With this configuration, the low-temperature, low-pressure refrigerant gas enters the compression chamber through the intake port 3 and is compressed into a high-temperature, high-pressure refrigerant gas. Then, it sequentially enters the first oil separation chamber 4 and the second oil separation chamber 5 tangentially and rotates around the wall in the first oil separation chamber 4 and the second oil separation chamber 5. Due to the different densities of the lubricating oil and the refrigerant gas, the lubricating oil will separate under the action of gravity during rotation. The lubricating oil separated in the first oil separation chamber 4 will fall into the oil return channel 7 and flow back to the oil sump 8. Subsequently, it will be lubricated to the compressor pump body through other oil return structures (not shown in the figure). The lubricating oil separated in the second oil separation chamber 5 will fall to the bottom wall of the inclined downward second oil separation chamber 5 and flow to the oil return channel 7 under the action of gravity. The rotation radius of the refrigerant gas after the lubricating oil is separated becomes smaller and smaller until it continues to be discharged through the exhaust port 6. It effectively utilizes the unused space of the extension 102 of the outer casing 1, housing the exhaust port 6 and the second oil separator 5 within the extension 102. This further simplifies the internal structure of the rear cover 2, reduces its volume, significantly decreases the overall length of the compressor, simplifies the overall compressor structure, and improves the utilization rate of the vehicle's interior installation space. It should be noted that the first direction is... Figure 1 The arrow in the image indicates the direction.

[0040] Optionally, the extension 102 extends along a first direction and has a first end and a second end along its length. The first end mates with the rear cover 2, and the exhaust port 6 is located at the second end. This arrangement further extends the rotational flow path of the high-temperature, high-pressure refrigerant gas within the second oil separation chamber 5, effectively promoting efficient oil-gas separation.

[0041] Optionally, the second oil separation chamber 5 is frustum-shaped, and the inner diameter of the second oil separation chamber 5 gradually decreases along the direction from the first end to the second end. With this configuration, the reduced inner diameter of the second oil separation chamber 5 will further increase the flow velocity of the high-temperature and high-pressure refrigerant gas. The higher flow velocity in the rotating flow field will increase the centrifugal force, making it easier for the lubricating oil to be thrown towards the bottom wall and accumulate, thereby improving the oil-gas separation efficiency.

[0042] Optionally, in order to effectively prevent the high-speed circumferentially rotating refrigerant gas from re-rolling up the lubricating oil separated at the bottom, the compressor horizontal oil separator structure also includes an oil return groove 12, which is recessed in the bottom wall of the second oil separation chamber 5.

[0043] Specifically, this embodiment provides the following technical solution by way of example: an exhaust circuit 9 is also provided inside the rear cover 2. The exhaust circuit 9 includes an exhaust chamber 901 and an exhaust channel 902. The exhaust chamber 901 is connected to the compression chamber, and the exhaust channel 902 is connected to the exhaust chamber 901 and the first oil separation chamber 4.

[0044] Optionally, in order to avoid the influence of the refrigerant gas flow on the oil return channel 7 and the oil sump 8, and to re-encapsulate the separated lubricating oil, a partition 10 is integrally formed inside the rear cover 2, which separates the oil return channel 7 from the exhaust circuit 9.

[0045] In this embodiment, to prevent refrigerant gas leakage, the compressor horizontal oil separator structure also includes a sealing gasket 11. The sealing gasket 11 is disposed between the outer casing 1 and the rear cover 2. The sealing gasket 11 has a first opening 111 and a second opening 112. The first opening 111 connects the first oil separation chamber 4 and the second oil separation chamber 5, and the second opening 112 connects the exhaust chamber 901 and the compression chamber. At the same time, the sealing gasket 11 is correspondingly arranged with the partition 10 to completely separate the exhaust circuit 9 and the oil return channel 7 from the oil sump 8, avoiding mutual interference between the refrigerant gas and the lubricating oil.

[0046] Optionally, the back cover 2 includes a first cover portion 201 and a second cover portion 202 connected in sequence, the first cover portion 201 covering the extension portion 102, and the second cover portion 202 covering the housing 101.

[0047] Optionally, the extension 102 and the housing 101 are integrally formed. This configuration provides better structural stability for the integrally formed extension 102 and housing 101, reduces the number of additional parts, and improves production efficiency.

[0048] In this embodiment, the compressor also includes a drive motor, a crankshaft, and a controller 13. The drive motor is disposed in the receiving cavity and can drive the crankshaft to rotate. The crankshaft is connected to the compression assembly. The controller 13 is electrically connected to the drive motor and can supply power to it to control its operation.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A horizontal oil separator structure of a compressor, the compressor comprising a housing (1), a back cover (2) and a compression assembly, the housing (1) comprising a shell (101) and an extension (102) protruding from the outer wall of the shell (101), the shell (101) being provided with a receiving cavity and a suction port (3), the compression assembly being arranged in the receiving cavity and provided with a compression cavity in communication with the suction port (3) for compressing refrigerant gas, the back cover (2) being arranged on the housing (1), characterized in that, The compressor horizontal oil separator structure comprises: A first oil separation cavity (4) is arranged in the rear cover (2) and communicates with the compression cavity; A second oil separation cavity (5) is arranged in the extension part (102) and communicates with the first oil separation cavity (4), the extension part (102) is provided with an exhaust port (6) communicating with the second oil separation cavity (5), the bottom wall of the second oil separation cavity (5) is arranged in a first direction and inclined downward, the rear cover (2) is provided with an oil pool (8) and an oil return channel (7) communicating with the first oil separation cavity (4) and the second oil separation cavity (5) and returning lubricating oil to the oil pool (8).

2. The compressor horizontal oil separator structure according to claim 1, characterized by, The extension part (102) is arranged in the first direction and has a first end and a second end along the length direction of the extension part (102), the first end is matched with the rear cover (2), and the exhaust port (6) is arranged at the second end.

3. The compressor horizontal oil separator structure according to claim 2, characterized by, The second oil separation cavity (5) is in the shape of a circular truncated cone, and the inner diameter of the second oil separation cavity (5) gradually decreases in the direction from the first end to the second end.

4. The compressor horizontal oil separator structure according to claim 1, characterized by, The rear cover (2) is further provided with an exhaust loop (9) comprising an exhaust cavity (901) and an exhaust channel (902), the exhaust cavity (901) communicates with the compression cavity, and the exhaust channel (902) communicates with the exhaust cavity (901) and the first oil separation cavity (4).

5. The compressor horizontal oil separator structure according to claim 4, characterized by, The rear cover (2) is provided with a partition plate (10) separating the oil return channel (7) and the exhaust loop (9).

6. The compressor horizontal oil separator structure according to claim 4, characterized by, The compressor horizontal oil separator structure further comprises a sealing gasket (11) arranged between the housing (1) and the rear cover (2).

7. The compressor horizontal oil separator structure according to claim 6, characterized by, The sealing gasket (11) is provided with a first opening (111) and a second opening (112), the first opening (111) communicates with the first oil separation cavity (4) and the second oil separation cavity (5), and the second opening (112) communicates with the exhaust cavity (901) and the compression cavity.

8. The compressor horizontal oil separator structure according to any one of claims 1 to 5, characterized by, The compressor horizontal oil separator structure further comprises an oil return groove (12) arranged in the bottom wall of the second oil separation cavity (5).

9. The compressor horizontal oil separator structure according to any one of claims 1 to 5, characterized by, The rear cover (2) comprises a first cover part (201) and a second cover part (202) connected in sequence, the first cover part (201) covers the extension part (102), and the second cover part (202) covers the shell (101).

10. The compressor horizontal oil separator structure according to any one of claims 1 to 5, characterized by, The extension part (102) and the shell (101) are integrally formed.

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