Gas-liquid separator and compression equipment

Abstract

The invention provides a gas-liquid separator and compression equipment. The gas-liquid separator is used for being arranged in a machine shell of a compressor. The gas-liquid separator is located above the air cylinder assembly and below the driving motor, so that gas exhausted from the compression cavity is exhausted from an exhaust port of the compressor after sequentially flowing through the gas-liquid separator and the driving motor; or the gas-liquid separator is located above the driving motor, so that the gas exhausted from the compression cavity is exhausted from the exhaust port of the compressor after sequentially flowing through the driving motor and the gas-liquid separator. According to the built-in gas-liquid separator, the problem that the exhaust temperature of existing compression equipment with an external gas-liquid separator is too high is solved.

Description

Technical Field

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

[0002] The liquid separator is also called a gas-liquid separator. The liquid separator of the compressor can separate the gas-liquid mixture from the evaporator. The separated gas enters the compressor from the outlet of the liquid separator, and the separated liquid refrigerant accumulates at the bottom of the liquid separator. The main function of the liquid separator is to prevent the liquid refrigerant from directly entering the compressor, thereby preventing the occurrence of liquid hammer problems.

[0003] When the compressor is running, the suction chamber of the compressor sucks in the low-temperature, low-pressure gas refrigerant separated by the gas-liquid separator. After being compressed in the compression chamber, the low-temperature, low-pressure gas refrigerant becomes high-temperature, high-pressure gas; the high-temperature, high-pressure gas is discharged from the exhaust port of the compressor. The high-temperature, high-pressure gas discharged from the compression chamber will pass through the motor when it flows to the exhaust port. The motor will generate heat when it is running. The high-temperature, high-pressure gas flowing through the motor will take away part of the heat of the motor, causing the temperature of the high-temperature, high-pressure gas to further increase.

[0004] If the exhaust gas temperature of the compressor is too high during operation, it will lead to reduced refrigeration efficiency and performance. It will also increase the workload of the compressor, increase the power consumption of the compressor during operation, and reduce the energy efficiency of the compressor. In addition, if the exhaust temperature of the compressor is too high, the probability of carbonization of the compressor's lubricating oil at high temperature will increase, resulting in reduced internal lubrication performance of the compressor, increased wear and failure rate of the equipment, and thus reduced service life of the equipment. If the compressor is overheated and runs at high temperature for a long time, the motor coil will also be affected by thermal expansion and thermal stress, causing the coil insulation material to age and break, and in severe cases, burn out.

[0005] The existing gas-liquid separator is located outside the compressor and is an external gas-liquid separator.

[0006] like Figure 5 As shown, the gas-liquid separator 1 is an external gas-liquid separator. Figure 5 The arrows in the figure indicate the direction of the gas. The gas enters from the air inlet 2 of the gas-liquid separator 1, and then enters the pump body for compression. The compressed high-temperature and high-pressure gas is discharged from the exhaust port inside the pump body into the inner cavity of the compressor, and then continues to pass through the gap between the stator and the rotor, and the gas flow holes inside the rotor, and undergoes heat exchange, and finally is discharged from the compressor from the exhaust port 3 located on the upper cover. Summary of the invention

[0007] The main purpose of the present invention is to provide a gas-liquid separator and a compression device to solve the problem of excessively high exhaust temperature of the existing compression device with an external gas-liquid separator.

[0008] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a gas-liquid separator is provided, which is suitable for a compressor; the compressor includes a cylinder assembly and a drive motor; the cylinder assembly is used to enclose an air intake chamber and a compression chamber; the gas outlet of the gas-liquid separator is used to communicate with the air intake chamber, and the compression chamber is used to compress the refrigerant; the gas-liquid separator is used to be arranged in the casing of the compressor. The gas-liquid separator is located above the cylinder assembly and below the drive motor, so that the gas discharged from the compression chamber flows through the gas-liquid separator and the drive motor in sequence, and then is discharged from the exhaust port of the compressor; or the gas-liquid separator is located above the drive motor, so that the gas discharged from the compression chamber flows through the drive motor and the gas-liquid separator in sequence, and then is discharged from the exhaust port of the compressor.

[0009] Furthermore, the cylinder assembly includes a cylinder, an upper flange and a lower flange, the upper flange and the lower flange are respectively arranged above and below the cylinder; the upper flange, the cylinder and the lower flange together form an intake chamber and a compression chamber; the gas-liquid separator is arranged above the upper flange.

[0010] Furthermore, the gas-liquid separator includes a main body and an exhaust pipe, the main body has a separation chamber, a first end of the exhaust pipe is connected to the separation chamber, and a second end of the exhaust pipe is used to communicate with the suction chamber.

[0011] Furthermore, the bottom of the main body has a second opening communicating with the separation chamber, and the first end of the exhaust pipe extends into the separation chamber through the second opening.

[0012] Furthermore, the axial direction of at least a portion of the exhaust pipe is parallel to the vertical direction.

[0013] Furthermore, the vertical height of the separation chamber is H, and the vertical distance between the first port of the exhaust pipe and the bottom wall of the separation chamber is h; 0.5≤h / H≤0.8.

[0014] Furthermore, the gas-liquid separator comprises a main body, the main body has a separation cavity, the main body is an annular structure, and the separation cavity is an annular cavity.

[0015] Further, a first recessed portion is concavely provided on the outer peripheral wall of the separation chamber away from the inner peripheral wall thereof; there are one or more first recessed portions, and the plurality of first recessed portions are distributed along the circumference of the separation chamber. And / or, a second recessed portion is concavely provided on the inner peripheral wall of the separation chamber away from the outer peripheral wall thereof; there are one or more second recessed portions, and the plurality of second recessed portions are distributed along the circumference of the separation chamber.

[0016] Furthermore, the gas-liquid separator includes a main body, the main body has a separation chamber and a first opening connected to the separation chamber, the separation chamber is used to connect with the second end of the intake pipe through the first opening; the first end of the intake pipe is located outside the compressor, and the first port of the intake pipe is its air inlet.

[0017] Furthermore, the main body has a first opening connected to the separation chamber, and the separation chamber is used to communicate with the second end of the intake pipe through the first opening; along the circumference of the main body, the angle between the first opening and the second opening is greater than 90 degrees and less than or equal to 180 degrees.

[0018] According to another aspect of the present invention, a compression device is provided, which includes a compressor and the above-mentioned gas-liquid separator.

[0019] By applying the technical solution of the present invention, the high-temperature and high-pressure gas discharged from the compression chamber will first flow through the gas-liquid separator before flowing through the drive motor. Since the temperature of the gas-liquid separator is relatively low, it will first cool down the temperature of the high-temperature and high-pressure gas to a certain extent. When the gas that has been cooled down first flows through the drive motor, even if it absorbs part of the heat of the drive motor and heats up, it will not cause the gas temperature to be too high, that is, the exhaust temperature of the compressor will not be too high.

[0020] Alternatively, the high-temperature and high-pressure gas discharged from the compression chamber first flows through the drive motor and then flows through the gas-liquid separator; when the gas flows through the drive motor, it will absorb part of the heat of the drive motor and heat up, and when the heated gas flows through the gas-liquid separator again, the gas-liquid separator with a lower temperature will cool the heated gas to a certain extent, thereby preventing the exhaust temperature of the compressor from being too high.

[0021] The built-in gas-liquid separator of the present application solves the problem of excessively high exhaust temperature of existing compression equipment with an external gas-liquid separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the structure of a compression device according to the present invention is shown;

[0024] Figure 2 A longitudinal cross-sectional view of a gas-liquid separator according to the present invention is shown;

[0025] Figure 3 A schematic structural diagram of a gas-liquid separator according to the present invention is shown;

[0026] Figure 4A schematic structural diagram of a separation chamber (provided with a first recessed portion and a second recessed portion) of a gas-liquid separator according to the present invention is shown;

[0027] Figure 5 The schematic diagram of the structure of the existing compression equipment (including the external gas-liquid separator) is shown;

[0028] Figure 6 Shows Figure 5 Schematic diagram of the structure of the external gas-liquid separator.

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

[0030] 1. Gas-liquid separator; 2. Air intake; 3. Air exhaust; 4. Air intake straight pipe; 5. Exhaust elbow; 6. Filter assembly; 7. Liquid separation chamber;

[0031] 100. Gas-liquid separator;

[0032] 10. Main body; 11. Separation chamber; 12. First opening; 13. Second opening; 14. Preset center plane; 15. First recessed portion; 16. Second recessed portion; 17. Ring hole;

[0033] 20. Exhaust pipe; 30. Intake pipe;

[0034] 200, compressor; 210, cylinder assembly; 2101, cylinder; 2102, upper flange; 21021, sleeve; 2103, lower flange; 2104, roller;

[0035] 2400, housing; 240, upper cover; 250, lower cover; 260, cylinder;

[0036] 220, driving motor; 230, exhaust port; 270, crankshaft; 2701, main shaft; 280, central axis. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Embodiment 1

[0041] The present invention provides a gas-liquid separator 100, please refer to Figures 1 to 4 The gas-liquid separator 100 is suitable for the compressor 200; the compressor 200 includes a cylinder assembly 210 and a drive motor 220; the cylinder assembly 210 is used to enclose an air intake chamber and a compression chamber; the air outlet of the gas-liquid separator 100 is used to communicate with the air intake chamber so that the air intake chamber inhales the gas refrigerant separated by the gas-liquid separator 100; the compression chamber is used to compress the gas refrigerant.

[0042] Specifically, the cylinder assembly 210 includes a cylinder 2101, an upper flange 2102 and a lower flange 2103, and the upper flange 2102 and the lower flange 2103 are respectively arranged above and below the cylinder 2101; the upper flange 2102, the cylinder 2101 and the lower flange 2103 together form a working chamber; the working chamber includes an intake chamber and a compression chamber.

[0043] The gas-liquid separator 100 is used to be arranged in the casing 2400 of the compressor 200; the gas-liquid separator 100 is located above the cylinder assembly 210, and the gas-liquid separator 100 is located below the drive motor 220, so that the gas discharged from the compression chamber of the cylinder assembly 210 flows through the gas-liquid separator 100 and the drive motor 220 in sequence, and then is discharged from the exhaust port 230 of the compressor 200.

[0044] During the specific operation, the suction chamber of the compressor 200 sucks in the low-temperature and low-pressure gas refrigerant separated by the gas-liquid separator 100, and the low-temperature and low-pressure gas refrigerant is compressed in the compression chamber of the cylinder assembly 210 to become a high-temperature and high-pressure gas; the high-temperature and high-pressure gas is discharged from the exhaust port 230 of the compressor 200. The high-temperature and high-pressure gas discharged from the compression chamber will pass through the drive motor 220 when flowing to the exhaust port 230. The drive motor 220 generates heat when running. The high-temperature and high-pressure gas flowing through the drive motor 220 will take away part of the heat of the drive motor 220, causing the temperature of the high-temperature and high-pressure gas to further increase.

[0045] If the exhaust gas temperature is too high during the operation of the compressor, it will lead to a decrease in refrigeration efficiency and refrigeration performance; it will also increase the workload of the compressor 200, increase the power consumption during the operation of the compressor, and reduce the equipment energy efficiency of the compressor 200. In addition, if the exhaust temperature of the compressor is too high, the probability of the compressor's lubricating oil carbonizing at high temperature will increase, resulting in a decrease in the internal lubrication performance of the compressor, increased wear and failure rate of the equipment, and thus a reduction in the service life of the equipment. If the compressor is overheated and operates at high temperature for a long time, the coil of the drive motor 220 will also be affected by thermal expansion and thermal stress, causing the coil insulation material to age and break, and in severe cases, burn out.

[0046] In this embodiment, the high-temperature and high-pressure gas discharged from the compression chamber will first flow through the gas-liquid separator 100 before flowing through the drive motor 220. Since the temperature of the gas-liquid separator 100 is relatively low, it will first cool down the temperature of the high-temperature and high-pressure gas to a certain extent; when the gas that has been cooled down first flows through the drive motor 220, even if it absorbs part of the heat of the drive motor 220 and heats up, it will not cause the gas temperature to be too high, that is, the exhaust temperature of the compressor 200 will not be too high. The gas-liquid separator 100 of the present application is a built-in gas-liquid separator, which solves the problem of the high exhaust temperature of the existing compression equipment with an external gas-liquid separator.

[0047] It should be noted that when the gas discharged from the compression chamber flows through the gas-liquid separator 100 , it flows through the outer wall surface of the gas-liquid separator 100 ; when the gas discharged from the compression chamber flows through the drive motor 220 , it flows through the outer wall surface of the drive motor 220 .

[0048] It should be noted that, since the gas-liquid separator inhales low-temperature and low-pressure gas, the temperature of the gas-liquid separator is relatively low, that is, the gas-liquid separator itself is in a low-temperature state.

[0049] Specifically, the gas-liquid separator 100 is disposed above the upper flange 2102 .

[0050] In this embodiment, the gas-liquid separator 100 includes a main body 10 and an exhaust pipe 20, the main body 10 has a separation chamber 11, the first end of the exhaust pipe 20 is connected to the separation chamber 11, and the second end of the exhaust pipe 20 is used to connect to the intake chamber, that is, the second port of the exhaust pipe 20 is the outlet of the gas-liquid separator 100.

[0051] Specifically, the bottom of the body 10 has a second opening 13 in communication with the separation chamber 11, and the first end of the exhaust pipe 20 extends into the separation chamber 11 through the second opening 13. In this way, there is a certain height difference between the first end of the exhaust pipe 20 and the bottom wall of the separation chamber 11, and this height difference can prevent the separation chamber 11 from directly entering the suction chamber of the compressor through the exhaust pipe 20 when the suction gas contains liquid; the liquid is deposited at the bottom of the separation chamber 11.

[0052] During the specific implementation process, the gas-liquid mixture enters the separation chamber 11. During the flow process, the followability of the droplets is weakened due to changes in the flow field velocity, droplet size and distribution, and the liquid and gas in the gas-liquid mixture are separated; the separated liquid is deposited at the bottom of the separation chamber 11 under the action of gravity; the separated gas flows upward to enter the exhaust pipe 20 through the first port of the exhaust pipe 20, and then enters the intake chamber.

[0053] Optionally, the axial direction of the exhaust pipe 20 is parallel to the vertical direction.

[0054] Optionally, the exhaust pipe 20 is fixed to the main body 10 by welding.

[0055] Optionally, the main body 10 has a preset center plane 14 , which is perpendicular to the vertical direction; the preset center plane 14 divides the main body 10 into two sub-parts, and the two sub-parts of the main body 10 are symmetrically arranged relative to the preset center plane 14 .

[0056] In this embodiment, the main body 10 is an annular structure, and the separation chamber 11 is an annular chamber.

[0057] Optionally, the central axis of the body portion 10 coincides with or is parallel to the central axis of the compressor 200 . Figure 1 The central axis 280 in FIG. 2 is the central axis of the compressor 200 .

[0058] In this embodiment, the main body 10 has a first opening 12 connected to the separation chamber 11; the separation chamber 11 is used to connect with the second end of the intake pipe 30 through the first opening 12; the first end of the intake pipe 30 is located outside the compressor 200, and the first port of the intake pipe 30 is its air inlet.

[0059] Specifically, the second end of the air intake pipe 30 is connected to the first opening 12 , or the second end of the air intake pipe 30 extends into the separation chamber 11 through the first opening 12 .

[0060] Optionally, the axial direction of the air intake pipe 30 is parallel to the horizontal direction.

[0061] Optionally, the central axis of the air intake pipe 30 is located on the preset central plane 14 .

[0062] Optionally, along the circumference of the main body 10 , an angle between the first opening 12 and the second opening 13 is greater than 90 degrees and less than or equal to 180 degrees.

[0063] In this embodiment, optionally, Figure 4 As shown, a first recessed portion 15 is recessed on the outer peripheral wall of the separation chamber 11 away from the inner peripheral wall thereof, and there are one or more first recessed portions 15. When there are multiple first recessed portions 15, the multiple first recessed portions 15 are distributed along the circumference of the separation chamber 11.

[0064] In this embodiment, optionally, Figure 4 As shown, the inner peripheral wall of the separation chamber 11 is provided with a second recessed portion 16 inwardly away from the outer peripheral wall thereof, and there are one or more second recessed portions 16. When there are multiple second recessed portions 16, the multiple second recessed portions 16 are distributed along the circumference of the separation chamber 11.

[0065] By providing the first recess 15 and / or the second recess 16, the area of ​​the outer wall and / or the inner wall of the separation chamber 11 can be increased, so that the gas sucked into the separation chamber 11 can contact the wall of the separation chamber 11 over a larger area when flowing in the separation chamber 11. This is conducive to allowing the moisture or liquid refrigerant in the gas to adhere to the wall of the separation chamber 11 and then liquefy and deposit when cooled.

[0066] Optionally, the first recessed portion 15 is an arc-shaped groove, and the central axis of the arc-shaped groove is parallel to or coincides with the central axis of the main body 10 .

[0067] Optionally, the second recessed portion 16 is an arc-shaped groove, and the central axis of the arc-shaped groove is parallel to or coincides with the central axis of the main body 10 .

[0068] In this embodiment, optionally, according to the use environment of the compressor, a filter mechanism is provided in the separation chamber 11, and the filter mechanism is located on the side of the second end of the intake pipe 30 away from the first end thereof, so that the gas in the intake pipe 30 enters the separation chamber 11 after being filtered by the filter mechanism.

[0069] Specifically, the filter mechanism includes a filter.

[0070] Specifically, the filter mechanism is disposed close to the first opening 12 .

[0071] From the above description, it can be seen that this embodiment achieves the following technical effects:

[0072] The low-temperature and low-pressure gas enters the separation chamber 11 of the gas-liquid separator 100 through the intake pipe 30, and then enters the cylinder 2101 through the exhaust pipe 20. After being compressed by the crankshaft 270 and the roller 2104, a high-temperature and high-pressure gas is formed; the high-temperature and high-pressure gas is discharged through the gas outlet on the upper flange; the high-temperature and high-pressure gas discharged from the gas outlet first passes through the area where the gas-liquid separator 100 is located, which has always been in a low-temperature state, and at this time, the high-temperature and high-pressure gas will be cooled to a certain extent; the cooled gas continues to flow to the exhaust port 230 of the compressor, and when passing through the area where the drive motor 220 is located, it exchanges heat with the drive motor 220, taking away part of the heat of the drive motor 220. Compared with the existing external gas-liquid separator, the gas temperature discharged by the compressor of the built-in gas-liquid separator of the present application is not too high.

[0073] The built-in design of the gas-liquid separator greatly reduces the probability of excessive exhaust temperature in the compressor while retaining its original function, which is beneficial to increasing the service life of the compressor; and it enables the lubricating oil to better lubricate the components and improve the performance of the compressor.

[0074] Furthermore, since the cooled gas exchanges heat with the drive motor 220, the temperature of the drive motor 220 can be reduced to a certain extent, thereby making the operation of the drive motor 220 more stable. At the same time, the temperature of the barrel 260 can also be reduced.

[0075] In addition, the built-in design of the gas-liquid separator can also reduce the space occupied by the compression equipment, which is conducive to the miniaturization of the compression equipment, thereby making the compression equipment more adaptable to various systems.

[0076] like Figure 5 and Figure 6 As shown, for the existing gas-liquid separator 1, due to the current assembly problem, the exhaust port of the existing gas-liquid separator 1 is designed as a curved pipe; after the gas enters from the air intake port 2, it first passes through the air intake straight pipe 4, then is discharged from the exhaust curved pipe 5, and then enters the compressor pump body. Because the air intake port 2 and the air intake straight pipe 4 are on the same central axis, if the inhaled gas contains some liquid, it is easy for the liquid to enter the compressor, thereby causing rust inside the compressor, so a filter assembly 6 is also provided above the air intake straight pipe 4. The function of the filter assembly 6 is to allow the liquid in the inhaled gas to enter the liquid separation chamber 7 from all sides without affecting the circulation of the gas.

[0077] The built-in gas-liquid separator of the present application is directly mounted on the pump body, so the structure can be simplified and the elbow can be eliminated; and because the first opening 12 and the central axis of the exhaust pipe 20 are normal, there is no situation where the liquid directly enters the exhaust pipe 20 when the gas is sucked with liquid, so the filter assembly can be eliminated. When the separation chamber 11 sucks gas with liquid, the liquid will be deposited at the bottom of the separation chamber 11 due to gravity, and the sucked gas will not be affected and will be discharged from the exhaust pipe 20 after flowing through the separation chamber 11.

[0078] According to the displacement of the compressor, the vertical height H of the separation chamber 11 can be adjusted to meet different liquid separation requirements. In addition, 0.5≤h / H≤0.8 to meet the requirements of air intake circulation; wherein h is the vertical distance between the first port of the exhaust pipe 20 and the bottom wall of the separation chamber 11.

[0079] Optionally, when h / H is 0.5, the first port of the exhaust pipe 20 is located at the preset center plane 14 ; that is, the plane where the first port of the exhaust pipe 20 is located is located on the preset center plane 14 .

[0080] It should be noted that the built-in gas-liquid separator of the present application also relies on gravity to separate gas and liquid. The gas-liquid mixed fluid enters the separation chamber 11 and circulates. In the process of flowing toward the exhaust pipe 20, the liquid adheres to the wall and sinks.

[0081] Embodiment 2

[0082] The difference between the second embodiment and the first embodiment is that:

[0083] The gas-liquid separator is located above the drive motor 220, so that the gas discharged from the compression chamber flows through the drive motor 220 and the gas-liquid separator in sequence, and then is discharged from the exhaust port 230 of the compressor 200. That is, the high-temperature and high-pressure gas discharged from the compression chamber first flows through the drive motor 220, and then flows through the gas-liquid separator; when the gas flows through the drive motor 220, it absorbs part of the heat of the drive motor 220 and heats up. When the heated gas flows through the gas-liquid separator again, the gas-liquid separator with a lower temperature will cool the heated gas to a certain extent, so that the exhaust temperature of the compressor 200 will not be too high.

[0084] The gas-liquid separator of this embodiment can also solve the problem of excessively high exhaust temperature of existing compression equipment with an external gas-liquid separator.

[0085] In this embodiment, the axial direction of at least a portion of the exhaust pipe 20 is parallel to the vertical direction.

[0086] In this embodiment, the main body 10 is not limited to an annular structure, and the separation chamber 11 is not limited to an annular chamber.

[0087] In this embodiment, the gas-liquid separator is disposed on the driving motor 220 , so that the gas-liquid separator is in contact with the driving motor 220 and can also play a certain role in cooling the driving motor 220 .

[0088] Embodiment 3

[0089] The present invention also provides a compression device, such as Figures 1 to 4 As shown, it includes a compressor 200, an air intake pipe 30 and a gas-liquid separator, and the gas-liquid separator is the gas-liquid separator in the first embodiment or the second embodiment.

[0090] Optionally, the compressor 200 is a rolling rotor compressor.

[0091] Specifically, the exhaust port 230 is located at the top of the compressor 200 .

[0092] Specifically, the housing 2400 includes an upper cover 240 , a lower cover 250 and a barrel 260 , and the upper cover 240 and the lower cover 250 are respectively disposed at the upper end and the lower end of the barrel 260 .

[0093] Specifically, the compressor 200 further includes an upper cover assembly, a shell assembly, a crankshaft 270 , and an upper flange; the cylinder assembly 210 further includes a roller 2104 ; the upper cover assembly includes an upper cover 240 ; and the shell assembly includes a cylinder 260 .

[0094] Specifically, when the gas-liquid separator is the gas-liquid separator of the first embodiment, the main shaft 2701 of the crankshaft 270 is located in the annular hole 17 of the main body 10 .

[0095] Specifically, the upper flange includes an upper flange plate 2102 and a sleeve portion 21021 , and the sleeve portion 21021 is connected to the upper portion of the upper flange plate 2102 .

[0096] Optionally, the upper flange 2102 and the sleeve portion 21021 are an integrally formed structure.

[0097] Specifically, when the gas-liquid separator is the gas-liquid separator of the first embodiment, the sleeve portion 21021 is located in the annular hole 17 of the main body 10 .

[0098] Specifically, a gas outlet is provided on the upper flange, and the gas outlet is communicated with the compression chamber so that the compressed high-temperature and high-pressure gas is discharged through the gas outlet.

[0099] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0100] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas-liquid separator, suitable for a compressor (200); the compressor (200) comprises a cylinder assembly (210) and a drive motor (220); the cylinder assembly (210) is used to enclose an air intake chamber and a compression chamber; the air outlet of the gas-liquid separator is used to communicate with the air intake chamber, and the compression chamber is used to compress the refrigerant; characterized in that: The gas-liquid separator is used to be arranged in a casing (2400) of the compressor (200); The gas-liquid separator is located above the cylinder assembly (210) and below the drive motor (220), so that the gas discharged from the compression chamber flows through the gas-liquid separator and the drive motor (220) in sequence and then is discharged from the exhaust port (230) of the compressor (200); or The gas-liquid separator is located above the drive motor (220), so that the gas discharged from the compression chamber flows through the drive motor (220) and the gas-liquid separator in sequence and is then discharged from the exhaust port (230) of the compressor (200).

2. The gas-liquid separator according to claim 1, characterized in that: The cylinder assembly (210) comprises a cylinder (2101), an upper flange (2102) and a lower flange (2103), wherein the upper flange (2102) and the lower flange (2103) are respectively arranged above and below the cylinder (2101); the upper flange (2102), the cylinder (2101) and the lower flange (2103) together enclose the suction chamber and the compression chamber; and the gas-liquid separator is arranged above the upper flange (2102).

3. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator comprises a main body (10) and an exhaust pipe (20), wherein the main body (10) has a separation chamber (11), a first end of the exhaust pipe (20) is connected to the separation chamber (11), and a second end of the exhaust pipe (20) is used to communicate with the air intake chamber.

4. The gas-liquid separator according to claim 3, characterized in that: The bottom of the main body (10) has a second opening (13) communicating with the separation chamber (11), and the first end of the exhaust pipe (20) extends into the separation chamber (11) through the second opening (13).

5. The gas-liquid separator according to claim 4, characterized in that: The axial direction of at least part of the exhaust pipe (20) is parallel to the vertical direction; and / or The vertical height of the separation chamber (11) is H, and the vertical distance between the first port of the exhaust pipe (20) and the bottom wall of the separation chamber (11) is h; 0.5≤h / H≤0.

8.

6. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator comprises a main body (10), the main body (10) having a separation chamber (11), the main body (10) being an annular structure, and the separation chamber (11) being an annular chamber.

7. The gas-liquid separator according to claim 6, characterized in that: A first recessed portion (15) is provided on the outer peripheral wall of the separation chamber (11) away from the inner peripheral wall thereof; there are one or more first recessed portions (15), and the plurality of first recessed portions (15) are distributed along the circumference of the separation chamber (11); and / or A second recessed portion (16) is provided on the inner peripheral wall of the separation chamber (11) and is recessed inwardly away from the outer peripheral wall thereof; there are one or more second recessed portions (16), and the plurality of second recessed portions (16) are distributed along the circumference of the separation chamber (11).

8. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator comprises a main body (10), the main body (10) having a separation chamber (11) and a first opening (12) communicating with the separation chamber (11), the separation chamber (11) being used to communicate with the second end of an intake pipe (30) via the first opening (12); the first end of the intake pipe (30) is located outside the compressor (200), and the first port of the intake pipe (30) is its intake port.

9. The gas-liquid separator according to claim 4, characterized in that: The main body (10) has a first opening (12) communicating with the separation chamber (11), and the separation chamber (11) is used to communicate with the second end of the air intake pipe (30) through the first opening (12); Along the circumference of the main body (10), the angle between the first opening (12) and the second opening (13) is greater than 90 degrees and less than or equal to 180 degrees.

10. A compression device, characterized in that: It comprises a compressor (200) and the gas-liquid separator according to any one of claims 1 to 9.

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