Oil-gas separator and compressor

Abstract

The utility model discloses an oil-gas separator and a compressor, and relates to the technical field of compressors, and the oil-gas separator is arranged in the compressor and located at an exhaust port of the compressor; the oil-gas separator comprises a support device and at least one filtering assembly. The support device is fixed in the compressor. The filtering assembly is mounted on the bracket device; wherein the number of the filter assembly is one, and the filter assembly is completely attached to the opening position of the exhaust port; and / or a plurality of filtering assemblies are arranged, and the plurality of filtering assemblies are enclosed to form a filtering space which completely surrounds the opening of the exhaust port. The oil-gas separator can reduce the oil spitting amount of the compressor so as to improve the stability of the oil amount in the compressor.

Description

Technical Field

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

[0002] Compressors are used to increase gas pressure and are commonly found in air conditioning and refrigeration systems. The working principle of a compressor is to compress and transport gas by driving the internal mechanism of the pump body through a motor.

[0003] In practice, the inventors found that there are at least the following problems in the prior art: during the operation of the compressor, since the compressed gas is mixed with vaporized oil, this part of the oil may be discharged when circulating inside the compressor, causing the so-called "oil spitting" phenomenon. Oil spitting will not only reduce the amount of oil inside the compressor, affecting the lubrication and cooling effects, but may also cause the compressor pump body to get stuck, causing the air conditioning system to fail to work properly. In addition, the spitted oil will enter the air conditioning system and adhere to the heat exchanger, reducing the heat exchange efficiency and the cooling effect.

[0004] Therefore, how to reduce the oil discharge of the compressor to improve the stability of the oil amount inside the compressor is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the present application is to provide an oil-gas separator, which can reduce the oil discharge of the compressor to improve the stability of the oil amount inside the compressor. Another purpose of the present application is to provide a compressor including an oil-gas separator.

[0006] To achieve the above object, the present application provides an oil-gas separator, which is arranged inside a compressor and located at an exhaust port of the compressor; the oil-gas separator comprises:

[0007] A bracket device, wherein the bracket device is fixed inside the compressor;

[0008] at least one filter assembly mounted on the support device; wherein:

[0009] There is one filter assembly, and the filter assembly completely covers the opening position of the exhaust port; and / or there are multiple filter assemblies, and the multiple filter assemblies enclose a filter space that completely surrounds the opening of the exhaust port.

[0010] In some embodiments, the support device has a filtering side, and each of the filtering sides is provided with a filtering installation position;

[0011] The number of the filter components corresponds to the number of the filter sides, and one of the filter components completely covers the opening position of the exhaust port, and the remaining filter components and the one filter component completely covers the opening position of the exhaust port are enclosed to form a filter space that completely surrounds the exhaust port opening.

[0012] In some embodiments, the bracket device is in contact with the inner wall of the compressor.

[0013] In some embodiments, a filter installation position is provided in the fitting area between the bracket device and the compressor, and the filter assembly installed in the filter installation position in the fitting area completely covers the opening position of the exhaust port.

[0014] In some embodiments, the filtering side surface of the bracket device that is in contact with the inner wall of the compressor is an arc-shaped surface.

[0015] In some embodiments, the support device is in the shape of a sector.

[0016] In some embodiments, the thickness direction of the fan-shaped body is parallel to the axial direction of the compressor, and the thickness direction of the fan-shaped body is perpendicular to the opening direction of the exhaust port;

[0017] The thickness dimension H of the fan-shaped body is greater than or equal to the opening diameter D of the exhaust port; and / or,

[0018] The central angle θ of the sector is less than or equal to 180°.

[0019] In some embodiments, the stent device comprises:

[0020] A filter bracket, on which the filter assembly is mounted;

[0021] A connecting assembly is used to fix the filter support inside the compressor.

[0022] In some embodiments, the connection assembly includes:

[0023] A first connecting member, the first connecting member is fixed inside the compressor, and the first connecting member is used to pass through the mounting hole opened on the filter bracket;

[0024] A second connecting member is connected to the first connecting member to fix the filter support.

[0025] The present application also provides a compressor, comprising the above-mentioned oil-gas separator, wherein the oil-gas separator is arranged inside the compressor and located at the exhaust port of the compressor; wherein:

[0026] The compressor comprises a housing, and the oil-gas separator is fixed inside the housing; and / or,

[0027] The compressor comprises a main shell and a lower shell connected to each other, the oil-gas separator is fixed inside the lower shell, the outer periphery of the oil-gas separator is in contact with the inner wall of the main shell, and the oil-gas separator is positioned with the end face of the lower shell in the axial direction of the compressor; and / or,

[0028] The compressor further includes an oil suction pipe, which is arranged inside the compressor and an oil suction port of the oil suction pipe is arranged toward the lower side of the exhaust port of the compressor.

[0029] With respect to the above-mentioned background technology, the oil-gas separator provided in the present application is arranged inside the compressor and located at the exhaust port of the compressor; the oil-gas separator includes a bracket device and at least one filter component, the bracket device is fixed inside the compressor; the filter component is installed on the bracket device; wherein: there is one filter component, and the filter component is completely attached to the opening position of the exhaust port; and / or, there are multiple filter components, and multiple filter components are enclosed to form a filter space that completely surrounds the exhaust port opening.

[0030] During the installation process of the oil-gas separator, first, the oil-gas separator is assembled, including the following steps: the filter component is installed on the bracket device, and the integral oil-gas separator is obtained by assembling the bracket device and the filter component; then, the oil-gas separator is installed in the compressor, including the following steps: the integral oil-gas separator is set inside the compressor, so that the oil-gas separator is located at the exhaust port of the compressor.

[0031] During the use of the oil-gas separator, because the oil-gas separator needs to be used in conjunction with the compressor, the use process of the oil-gas separator and the use process of the compressor are explained in combination. After completing the installation of the oil-gas separator in the compressor, start the compressor, and the motor and pump body in the compressor work, powered by the motor, and the pump body performs compression work; oil spitting occurs during the operation of the pump body. Due to gas compression and mechanical movement, the oil may be mixed with the compressed gas, causing part of the oil to be brought out of the pump body. In response to this phenomenon, because the oil-gas separator is located at the exhaust port of the compressor, under the oil-gas separation action of the oil-gas separator, the gas can be discharged normally through the exhaust port, and the oil is filtered out of the gas by the oil-gas separator, thereby achieving the effect of oil-gas separation.

[0032] In particular, depending on the installation form of the filter component, it can be a form in which a filter component is completely attached to the opening position of the exhaust port to achieve the effect of filtering the oil, or it can be a form in which multiple filter components are enclosed to form a filter space that completely surrounds the opening position of the exhaust port to achieve the effect of filtering the oil. In addition, it can also be a form that combines the above two forms, which can also achieve the effect of filtering the oil.

[0033] In combination with the above structure and process description, it can be seen that the oil-gas separator has at least the following beneficial effects: the oil-gas separator can reduce the oil discharge amount of the compressor to improve the stability of the oil amount inside the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0035] Figure 1 A structural diagram of an oil-gas separator and a compressor provided in an embodiment of the present application;

[0036] Figure 2 for Figure 1 Structural diagram of the middle AA section;

[0037] Figure 3 A structural diagram of an oil-gas separator provided in an embodiment of the present application;

[0038] Figure 4 This is an installation diagram of the oil-gas separator provided in an embodiment of the present application.

[0039] in:

[0040] Oil-gas separator 1, support device 11, filter installation position 1101, filter side 1102, filter support 111, connecting component 112, first connecting piece 1121, second connecting piece 1122, third connecting piece 1123, filter component 12,

[0041] The compressor 2 , the exhaust port 201 , the casing 21 , the main casing 211 , the lower casing 212 , the exhaust pipe 22 , and the oil suction pipe 23 . DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] First of all, it is necessary to explain the composition and function of the vane compressor. The main components of the vane compressor include the body (cylinder), rotor, vane, crank-connecting rod mechanism, drive device, etc., and each component has its specific function. The body (cylinder) is the main part of the compressor, usually made of cast iron or steel. It provides a closed space so that the gas can be compressed. The rotor is eccentrically arranged in the cylinder, and a number of longitudinal grooves are opened on it. These grooves are equipped with vanes that can slide freely in the radial direction. Due to the eccentric configuration of the rotor, a crescent-shaped space is formed between the inner wall of the cylinder and the outer surface of the rotor. The vane is the core component of the vane compressor, and its function is to reciprocate on the crankshaft to compress the gas. The vane is usually made of high-quality alloy materials with high hardness and wear resistance. The crank-connecting rod mechanism converts the rotational motion into reciprocating motion and drives the vane to compress the gas. The crankshaft connects the vane through a connecting rod to form a motion transmission chain. This mechanism is reasonably designed and can effectively convert rotational motion into reciprocating motion. The driving device includes an electric motor, which provides power to rotate the rotor in the cylinder, thereby driving the sliding vane to compress the gas.

[0045] During the working process of the vane compressor, as the rotor rotates continuously, the volume of the unit cell changes repeatedly according to a certain rule. When the volume of the unit cell gradually increases, gas begins to be sucked in; when the volume of the unit cell begins to decrease, the gas is compressed inside it; when the volume of the unit cell is connected to the exhaust port, the compression process ends and exhaust begins.

[0046] In general, the vane compressor has the characteristics of simple structure, high reliability and easy maintenance. Its reasonable structural design and the selection of high-quality materials ensure the working efficiency and service life of the compressor. This compressor is widely used in air conditioning, refrigeration equipment, automobile manufacturing and other fields, providing the necessary gas compression and circulation for our life and industrial production.

[0047] The purpose of the present application is to provide an oil-gas separator 1. By using the oil-gas separator 1 in a compressor 2, the oil discharge amount of the compressor can be reduced to improve the stability of the oil amount inside the compressor.

[0048] Please refer to Figures 1 to 3 ,in, Figure 1 This is a structural diagram of the oil-gas separator and the compressor provided in the embodiment of the present application. Figure 2 for Figure 1 The structural diagram of the AA section. Figure 3 This is a structural diagram of the oil-gas separator provided in an embodiment of the present application.

[0049] In a specific embodiment, Figure 1 and Figure 2As shown, the oil-gas separator 1 provided in the embodiment of the present application is arranged inside the compressor 2, the exhaust port 201 is an opening on the compressor 2 for discharging compressed gas, and the oil-gas separator 1 is located at the exhaust port 201 of the compressor 2.

[0050] In this embodiment, the oil-gas separator 1 is located on the discharge path of the compressed gas, and the path position of the oil-gas separator 1 is the last position where the compressed gas leaves the compressor 2. Therefore, the oil can be filtered through the oil-gas separator 1, especially large particles of oil and mist-like oil can be filtered from the gas, thereby achieving the effect of oil-gas separation.

[0051] In other words, the oil-gas separator 1 is located at the end of the compressed gas discharge path of the compressor 2, and its main function is to efficiently separate the oil in the compressed gas to ensure the purity of the gas. Through physical interception, the oil-gas separator captures oil droplets and prevents them from being discharged with the gas, thereby reducing the oil loss inside the compressor 2 and avoiding the pollution of the air conditioning system to which the exhaust port 201 leads after the oil is discharged.

[0052] like Figure 3 As shown, the oil-gas separator 1 mainly includes a support device 11 and at least one filter assembly 12 . The support device 11 is fixed inside the compressor 2 , and the filter assembly 12 is installed on the support device 11 .

[0053] Optionally, the support device 11 is provided with at least one filter installation position 1101. The filter installation position 1101 is a mounting position on the support device 11 for installing the filter assembly 12. One filter installation position 1101 can be correspondingly installed with one filter assembly 12. By installing the filter assembly 12 on the filter installation position 1101, the support device 11 and the filter assembly 12 can be assembled into a complete oil-gas separator 1. Based on this, after the complete oil-gas separator 1 is set inside the compressor 2 and located at the exhaust port 201 of the compressor 2, the oil can be filtered through the oil-gas separator 1, thereby achieving the effect of oil-gas separation.

[0054] It should be noted that the present embodiment does not limit the form of the filter installation position 1101 of the bracket device 11, because the filter assembly 12 also has multiple forms based on the different forms of the filter installation position 1101, so the present embodiment also does not limit the form of the filter assembly 12. For example, the form of the filter installation position 1101 in the bracket device 11 can be a single-layer form, in which case the form of a single filter installation position 1101 is involved, and the corresponding technical solution is a single-layer form of the filter assembly 12, and the effect achieved at this time is the effect of single-layer filtering of oil; in addition, the form of the filter installation position 1101 in the bracket device 11 can also be a multi-layer form, in which case the form of multiple filter installation positions 1101 is involved, and the corresponding technical solution is a multi-layer form of the filter assembly 12, and the effect achieved at this time is the effect of multi-layer filtering of oil.

[0055] Optionally, the filter assembly 12 is one, and the filter assembly 12 completely covers the opening position of the exhaust port 201. A filter assembly 12 can be regarded as a planar filter structure laid flat on the opening position of the exhaust port 201, which can tightly cover the opening position of the exhaust port 201 in a flat position to provide an efficient, space-efficient and easy-to-maintain solution. This design not only ensures that the compressed gas is accurately filtered before being discharged from the compressor, but also improves the tightness of the fit and reduces the obstruction to the airflow due to its flat-laying characteristics. Similarly, the customizability of the filter assembly 12 enables it to fully cover the size and shape of the exhaust port 201, and its compact planar structure is also suitable for application scenarios with limited space.

[0056] Optionally, there are multiple filter assemblies 12, and multiple filter assemblies 12 enclose a filter space that completely surrounds the opening position of the exhaust port 201. Compared with the planar filter structure of one filter assembly 12 in the aforementioned solution, the technical solution of multiple filter assemblies 12 enclosing a filter space no longer limits the condition of whether it is necessary to completely cover the opening position of the exhaust port 201, but forms a three-dimensional filter structure that surrounds the opening position of the exhaust port 201 in the form of a three-dimensional space. Compared with a single planar filter structure, this solution does not rely on the complete fit of the filter assembly 12 and the exhaust port 201, but uses multiple filter assemblies 12 to form a three-dimensional enclosed area to improve filtering efficiency and flexibility. This design allows independent replacement and maintenance of each filter assembly 12, while providing a larger filtering area and adaptability, more comprehensive control of oil filtration, and higher reliability.

[0057] In a specific implementation, based on the structural description of the oil-gas separator 1 in the foregoing content, the process description of the oil-gas separator 1 is now described as follows.

[0058] During the installation process of the oil-gas separator 1, first, the oil-gas separator 1 is assembled, including the following steps: at least one filter installation position 1101 is set on the bracket device 11, and the filter component 12 is installed on the filter installation position 1101. The overall oil-gas separator 1 is obtained by assembling the bracket device 11 and the filter component 12; then, the oil-gas separator 1 is installed in the compressor 2, including the following steps: the overall oil-gas separator 1 is set inside the compressor 2, so that the oil-gas separator 1 is located at the exhaust port 201 of the compressor 2.

[0059] During the use of the oil-gas separator 1, because the oil-gas separator 1 needs to be used in conjunction with the compressor 2, the use process of the oil-gas separator 1 and the use process of the compressor 2 are explained in combination. After the oil-gas separator 1 is installed in the compressor 2, the compressor 2 is started, and the motor and the pump body in the compressor 2 work, the motor provides power, and the pump body performs compression work; the oil spitting phenomenon occurs during the operation of the pump body. Due to gas compression and mechanical movement, the oil may be mixed with the compressed gas, causing part of the oil to be brought out of the pump body. To address this phenomenon, because the oil-gas separator 1 is located at the exhaust port 201 of the compressor 2, the oil-gas separator 1 filters the oil to achieve oil-gas separation.

[0060] In particular, depending on the installation form of the filter component 12, it can be a form in which a filter component 12 completely covers the opening position of the exhaust port 201 to achieve the effect of filtering the oil, or it can be a form in which multiple filter components 12 are enclosed to form a filter space that completely surrounds the opening position of the exhaust port 201 to achieve the effect of filtering the oil. In addition, it can also be a form that combines the above two forms, which can also achieve the effect of filtering the oil.

[0061] Combined with the above structure and process description, it can be seen that the oil-gas separator 1 has at least the following beneficial effects: the oil-gas separator 1 can effectively prevent the oil from being discharged through the exhaust port 201, significantly reducing the oil discharge volume, thereby improving the reliability of the compressor; at the same time, it prevents the oil from being discharged into the air-conditioning system, providing guarantee for the normal operation of the air-conditioning system.

[0062] It should be noted that the present embodiment does not limit the structural shape of the oil-gas separator 1 , that is, structural shapes such as a cube and a column should also fall within the description scope of the present embodiment.

[0063] In some embodiments, the support device 11 has a filtering side surface 1102 , and each filtering side surface 1102 is provided with a filtering installation position 1101 .

[0064] In this embodiment, the oil-gas separator 1 can be a three-dimensional structure with four faces, or a three-dimensional structure with more faces. Taking the oil-gas separator 1 as a four-sided three-dimensional structure as an example, the oil-gas separator 1 can be regarded as a quadrangular prism, and the four sides of the oil-gas separator 1 correspond to the four filtering sides 1102 of the bracket device 11 and the filter assembly 12 installed on the filtering side 1102. The oil-gas separator 1 in the form of a quadrangular prism can provide a stable and efficient oil-gas separation environment for the compressor 2. The four-sided three-dimensional design of the oil-gas separator 1 makes it more compact in spatial layout. At the same time, the four faces of the oil-gas separator 1 have specific inclination angles, which can also achieve the effect of increasing the filtering area and improving the separation efficiency. In addition, the oil-gas separator 1 can also be a pentahedron and a three-dimensional structure with more faces, which should also belong to the description scope of this embodiment.

[0065] Furthermore, the number of filter components 12 in this embodiment corresponds to the number of filter sides 1102, and one of the filter components 12 is completely covered with the opening position of the exhaust port 201, and the remaining multiple filter components 12 and the filter component 12 that is completely covered with the opening position of the exhaust port 201 are enclosed to form a filter space that completely surrounds the opening position of the exhaust port 201.

[0066] Based on the three-dimensional structural design of the oil-gas separator 1 in the aforementioned content, the present embodiment further limits the form of the filter component 12, so that the oil-gas separator 1 not only has a filter component 12 that completely covers the opening position of the exhaust port 201, but also has a form in which the remaining multiple filter components 12 and a filter component 12 that completely covers the opening position of the exhaust port 201 form a filter space that completely surrounds the opening position of the exhaust port 201, that is, the oil-gas separator 1 has both a planar filter structure and a three-dimensional filter structure.

[0067] When in use, if the oil and compressed gas mix and try to enter the exhaust port 201 through the oil-gas separator 1, the three-dimensional filtering structure in the oil-gas separator 1 will first act on the mixture of oil and compressed gas to separate the oil and gas. If there is still oil in the mixture that passes through the three-dimensional filtering structure, the planar filtering structure in the oil-gas separator 1 will further act on the passed mixture to further separate the oil and gas, thereby achieving a "double-layer" filtering mode combining the planar filtering structure and the three-dimensional filtering structure.

[0068] In some embodiments, the support device 11 is in contact with the inner wall of the compressor 2 .

[0069] In this embodiment, the oil-gas separator 1 adopts a special-shaped structure. By making the bracket device 11 fit against the inner wall of the compressor 2, the oil-gas separator 1 with a special-shaped structure can adapt to the irregular shape inside the compressor and maximize the utilization of the internal space. At the same time, the compact adaptable design of the oil-gas separator 1 and the compressor 2 also helps to improve the degree of integration between the oil-gas separator 1 and the compressor 2 and reduce the harm caused by vibration.

[0070] Furthermore, a filter installation position 1101 is provided in the fitting area between the bracket device 11 and the compressor 2 , and the filter assembly 12 installed in the filter installation position 1101 in the fitting area completely covers the opening position of the exhaust port 201 .

[0071] In this embodiment, because the planar filtering structure of the oil-gas separator 1 is integrated into the fitting area between the bracket device 11 and the compressor 2, this design not only optimizes space utilization, but also improves the tightness of the fit of the planar filtering structure, thereby improving the performance of the oil-gas separator 1.

[0072] In some embodiments, the filtering side surface 1102 of the bracket device 11 that is in contact with the inner wall of the compressor 2 is an arc-shaped surface.

[0073] In this embodiment, the filter side surface 1102 of the bracket device 11 that fits the inner wall of the compressor 2 is an arc-shaped surface, so that the oil-gas separator 1 can adapt to the arc-shaped inner wall of the compressor 2, so that the oil-gas separator 1 can seamlessly adapt to the internal space of the compressor, optimize space utilization, enhance the sealing effect, and reduce gas pressure loss. In addition, the arc-shaped surface also helps to smooth gas flow, improve heat transfer efficiency, and because it is closely matched with the inner wall of the compressor, it also improves structural stability.

[0074] In some embodiments, the support device 11 is in the shape of a sector.

[0075] In this embodiment, the fan-shaped body has filter components 12 on all the upper, lower, left, right, front and back surfaces. In particular, the fan-shaped body has two inner and outer arc-shaped surfaces. The outer arc-shaped surface plays a role of fitting with the inner wall of the compressor 2, and the inner arc-shaped surface can be regarded as a hollow design. The advantage of this is that the internal components of the compressor 2, such as the pump body parts such as the muffler, can be avoided. At the same time, the design of the inner arc-shaped surface also helps to increase the filtering area and improve the separation efficiency. The shape structure of the fan-shaped body can also provide better strength and stability.

[0076] In some embodiments, the thickness direction of the sector-shaped body is parallel to the axial direction of the compressor 2 , and the thickness direction of the sector-shaped body is perpendicular to the opening direction of the exhaust port 201 .

[0077] In this embodiment, the various physical parameters of the fan-shaped body include: the thickness dimension H of the fan-shaped body, the center angle θ of the fan-shaped body, and the width L of the circular ring of the fan-shaped body. Among them, optionally, the thickness dimension H of the fan-shaped body is designed according to the size of the exhaust port 201, and the thickness dimension H of the fan-shaped body is greater than or equal to the opening diameter D of the exhaust port 201; optionally, the center angle θ of the fan-shaped body is less than or equal to 180° to avoid the oil-gas separator 1 from contacting the oil liquid surface inside the compressor 2 or the distance is too close; the width L of the circular ring of the fan-shaped body is designed according to the spatial position of the internal components of the compressor 2 to avoid interference with the internal components.

[0078] In some embodiments, the support device 11 includes a filter support 111 and a connecting assembly 112 .

[0079] In this embodiment, the filter support 111 is specially designed with a filter installation position 1101 for installing the filter assembly 12 to achieve oil and gas separation and filtration of the exhaust port 201 of the compressor 2. The connecting assembly 112 is responsible for firmly fixing the filter support 111 inside the compressor to ensure the stability and reliability of the entire filter system during the operation of the compressor. This structural design allows precise matching between the filter support 111 and the compressor 2, while simplifying the installation and maintenance process.

[0080] Please refer to Figure 4 , Figure 4 This is an installation diagram of the oil-gas separator provided in an embodiment of the present application.

[0081] In some embodiments, the connection assembly 112 includes a first connection member 1121 and a second connection member 1122 .

[0082] In this embodiment, this design allows the filter holder 111 to be installed inside the compressor 2 in a stable and adjustable manner. Specifically, the first connecting member 1121 is fixed inside the compressor and is designed to pass through the mounting hole pre-opened on the filter holder 111. The second connecting member 1122 is connected to the first connecting member 1121 to achieve a stable fixation of the filter holder 111. Such a design not only provides installation flexibility, but also can adjust the position of the filter holder 111 on the first connecting member 1121 as needed, ensure the precise alignment between the oil-gas separator 1 and the exhaust port 201, and ensure the normal realization of the oil-gas separation function.

[0083] Optionally, the connecting component 112 also includes a third connecting member 1123, which is installed on the first connecting member 1121 before the second connecting member 1122, so that the filter bracket 111 is installed between the third connecting member 1123 and the second connecting member 1122. The position of the filter bracket 111 on the first connecting member 1121 is adjusted by adjusting the position of the third connecting member 1123 on the first connecting member 1121, and then the filter bracket 111 is fixed on the first connecting member 1121 at a determined position using the second connecting member 1122.

[0084] Exemplarily, the first connecting member 1121 is a bolt, the second connecting member 1122 is a nut, and the third connecting member 1123 is a limiting washer or a nut.

[0085] In some cases, the first connector 1121 is fixed in the compressor 2 by welding, preferably resistance welding; when the central angle θ of the oil-gas separator 1 is small, only one first connector 1121 may be used. During assembly, the third connector 1123 is fixed to the first connector 1121 in advance, and then the filter bracket 111 is installed and fixed with the second connector 1122. After assembly and fixing, it can be further fixed by welding, preferably ring welding.

[0086] In some cases, the connection assembly 112 only uses the first connection member 1121 and the second connection member 1122, and avoids using the third connection member 1123, which can reduce the number of parts used. During assembly, the filter bracket 111 can be positioned with the help of the internal structure of the compressor 2, and the assembly work can also be completed while reducing the number of parts used.

[0087] In a specific embodiment, the filter component 12 is a filter screen.

[0088] In this embodiment, in order to effectively filter the oil, the filter is designed with extremely fine pores, which are much smaller than the size of the oil droplets, so that submicron oil droplets can be intercepted with high capture efficiency. The filter is usually composed of a multi-layer structure, each layer has a different pore size, so as to achieve graded filtration of oil droplets. The materials used, such as polytetrafluoroethylene (PTFE), not only have high adsorption, but also have good temperature resistance and mechanical strength, which ensures the performance and durability of the filter in the high temperature environment of the compressor exhaust port. In addition, the design of the filter takes into account the fluid dynamics characteristics, aiming to minimize pressure loss, while providing the convenience of easy maintenance and replacement to ensure the long-term and efficient operation of the entire filtration system.

[0089] The present application also provides a compressor 2 , comprising the above-mentioned oil-gas separator 1 , wherein the oil-gas separator 1 is arranged inside the compressor 2 and located at the exhaust port 201 of the compressor 2 .

[0090] In this embodiment, the compressor 2 should have all the beneficial effects of the above-mentioned oil-gas separator 1, which will not be described in detail here.

[0091] The present application relates to the field of compressors, and in some cases, in particular to a horizontal DC variable frequency rotary compressor, and an automotive air conditioning system using the compressor.

[0092] For the compressor 2, the exhaust port 201 on the compressor 2 corresponds to the exhaust pipe 22, and the exhaust pipe 22 is a structure connecting the compressor 2 to the air conditioning system.

[0093] In recent years, with the continuous improvement of DC variable frequency rotary compressor technology, rotary compressors have gradually entered the refrigeration and freezing, automotive air conditioning and other industries from the fields of household air conditioners and dehumidifiers, and have been compared with existing compressors. At present, vertical machines are used in the fields of household air conditioners, and some automotive fields such as logistics vehicles and buses equipped with top-mounted integrated air conditioners.

[0094] The horizontal DC variable frequency rotary compressors in existing automobile and other systems have the following disadvantages when used. First, the compressor discharges a large amount of oil when working, which reduces the amount of oil inside the compressor. In severe cases, the compressor will be short of oil, causing the pump body to get stuck and the air conditioning system to not work properly. Second, the compressor discharges a large amount of oil, causing a large amount of refrigeration oil to enter the air conditioning system and adhere to the heat exchanger, thereby causing the air conditioning heat exchange capacity to deteriorate and the refrigeration effect to decrease. In order to solve the above problems, how to reduce the compressor oil discharge is a technical problem that needs to be solved urgently.

[0095] In view of the above problems, the compressor 2 provided by the present application is improved from the perspective of reducing the amount of oil discharged. Specifically, the present application sets an oil-gas separator 1 in the compressor 2. Due to the three-dimensional structural characteristics and filter properties of the oil-gas separator 1, the oil-gas separator 1 can be regarded as a fan-shaped filter cage. By adding a fan-shaped filter cage, the amount of oil discharged is reduced, thereby improving the reliability of the compressor and ensuring the normal operation of the air-conditioning system.

[0096] In addition, the compressor 2 also includes a housing 21, and the oil-gas separator 1 is fixed inside the housing 21. Among them, a pump body is also arranged in the space of the housing 21, and the pump body is composed of a main bearing, a cylinder, a crankshaft, a piston, a sliding vane, etc. This part belongs to the prior art and will not be repeated here.

[0097] Optionally, the compressor 2 includes a main shell 211 and a lower shell 212 that are connected to each other, that is, the shell 21 consists of two parts: the main shell 211 and the lower shell 212 , and the oil-gas separator 1 is fixed inside the lower shell 212 .

[0098] During assembly, the oil-gas separator 1 is first installed on the lower housing 212 , and then the lower housing 212 is connected to the main housing 211 .

[0099] Furthermore, the outer periphery of the oil-gas separator 1 is in contact with the inner wall of the main housing 211 , and the oil-gas separator 1 is positioned with the end surface of the lower housing 212 in the axial direction of the compressor 2 .

[0100] For example, the filter assembly 12 and the filter support 111 can be formed by furnace welding. When the oil-gas separator 1 is assembled, the oil-gas separator 1 is pressed into the main housing 211 along with the lower housing 212, and the compressor assembly is completed by girth welding.

[0101] In this embodiment, the oil-gas separator 1 is relatively independent from the pump body, and the oil-gas separator 1 is pre-fixed with the lower shell 212, so the installation is reliable and not loose, and the assembly method is simple and convenient. The oil-gas separator 1 is matched with the inner diameter of the shell 21 by shape, and is easy to install. The double-layer filtering effect is obvious. The oil-gas separator 1 directly acts on the exhaust port 201 to separate oil and gas, reducing the oil discharge of the compressor 2, and effectively solving the problem of large oil discharge of the compressor 2.

[0102] Optionally, the compressor 2 further includes an oil suction pipe 23 , which is disposed inside the compressor 2 and an oil suction port of the oil suction pipe 23 is disposed toward below the exhaust port 201 of the compressor 2 .

[0103] It should be noted that the oil suction power of the oil suction pipe 23 includes but is not limited to utilizing the system pressure difference, providing an additional oil pump, utilizing the exhaust pressure of the compressor, etc., which are not limited here.

[0104] It should be noted that many of the components mentioned in this application are universal standard parts or components known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0105] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0106] The oil-gas separator and compressor provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An oil-gas separator, characterized in that: The oil-gas separator is arranged inside the compressor and located at the exhaust port of the compressor; the oil-gas separator comprises: A bracket device, wherein the bracket device is fixed inside the compressor; at least one filter assembly mounted on the support device; wherein: There is one filter assembly, and the filter assembly completely covers the opening position of the exhaust port; and / or there are multiple filter assemblies, and the multiple filter assemblies enclose a filter space that completely surrounds the opening of the exhaust port.

2. The oil-gas separator according to claim 1, characterized in that: The support device has a filtering side surface, and each of the filtering sides is provided with a filtering installation position; The number of the filter components corresponds to the number of the filter sides, and one of the filter components completely covers the opening position of the exhaust port, and the remaining filter components and the one filter component completely covers the opening position of the exhaust port are enclosed to form a filter space that completely surrounds the exhaust port opening.

3. The oil-gas separator according to claim 1, characterized in that: The support device is fitted with the inner wall of the compressor.

4. The oil-gas separator according to claim 3, characterized in that: A filter installation position is provided in the fitting area between the bracket device and the compressor, and the filter assembly installed in the filter installation position in the fitting area completely covers the opening position of the exhaust port.

5. The oil-gas separator according to claim 3, characterized in that: The filtering side surface of the bracket device that is in contact with the inner wall of the compressor is an arc-shaped surface.

6. The oil-gas separator according to claim 5, characterized in that: The support device is in the shape of a fan.

7. The oil-gas separator according to claim 6, characterized in that: The thickness direction of the fan-shaped body is parallel to the axial direction of the compressor, and the thickness direction of the fan-shaped body is perpendicular to the opening direction of the exhaust port; The thickness dimension H of the fan-shaped body is greater than or equal to the opening diameter D of the exhaust port; and / or, The central angle θ of the sector is less than or equal to 180°.

8. The oil-gas separator according to claim 1, characterized in that: The support device comprises: A filter bracket, on which the filter assembly is mounted; A connecting assembly is used to fix the filter support inside the compressor.

9. The oil-gas separator according to claim 8, characterized in that: The connection component comprises: A first connecting member, the first connecting member is fixed inside the compressor, and the first connecting member is used to pass through the mounting hole opened on the filter bracket; A second connecting member is connected to the first connecting member to fix the filter support.

10. A compressor, characterized in that: The invention comprises an oil-gas separator according to any one of claims 1 to 9, wherein the oil-gas separator is arranged inside the compressor and located at the exhaust port of the compressor; wherein: The compressor comprises a housing, and the oil-gas separator is fixed inside the housing; and / or, The compressor comprises a main shell and a lower shell connected to each other, the oil-gas separator is fixed inside the lower shell, the outer periphery of the oil-gas separator is in contact with the inner wall of the main shell, and the oil-gas separator is positioned with the end face of the lower shell in the axial direction of the compressor; and / or, The compressor further includes an oil suction pipe, which is arranged inside the compressor and an oil suction port of the oil suction pipe is arranged toward the lower side of the exhaust port of the compressor.

Images