Oil discharge amount reducing device, horizontal rolling rotor compressor and oil discharge amount control method thereof

Abstract

The application provides a device for reducing oil discharge, a horizontal rolling rotor compressor and an oil discharge control method thereof. The device for reducing oil discharge is a prefabricated integral assembly and comprises a base and a filter screen mounted at one end of the base. The base is connected to the inlet of the filter screen and an exhaust pipe. The base expands from the connecting end of the exhaust pipe to the mounting end of the filter screen. The sum of the areas of the filter holes on the filter screen is greater than the area of the inner hole of the exhaust pipe. Since the device for reducing oil discharge is a prefabricated integral assembly, the assembly process can be simplified and the assembly efficiency can be improved. The filter screen can avoid direct impact of oil on the exhaust pipe. The design that the base expands from the connecting end of the exhaust pipe to the mounting end of the filter screen makes the refrigerant flowing through the base fold. The refrigerant is further separated in the base, the oil in the refrigerant is separated out, the oil separation effect is improved, the oil discharge is reduced, the oil discharge of the compressor at the terminal of the refrigerant flow path is controlled, and the oil discharge can be more effectively controlled.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and in particular to a device for reducing oil discharge, a horizontal rolling rotor compressor, and a method for controlling the oil discharge of the same. Background Technology

[0002] Currently, the most common approach to improving the oil discharge of horizontal rolling rotor compressors is to install an oil baffle between the pump body and the motor. The oil baffle is usually located on the main bearing or the muffler. This type of measure to improve the oil discharge of horizontal rolling rotor compressors controls the oil discharge from the path. However, controlling the oil discharge from the path may not result in a significant reduction in the final oil discharge, and the entire assembly process is cumbersome and inefficient. Summary of the Invention

[0003] In view of this, this application proposes an oil discharge reduction device, a horizontal rolling rotor compressor, and a method for controlling the oil discharge of the same, which can effectively control the oil discharge volume and simplify the assembly process.

[0004] In a first aspect, this application provides a device for reducing oil discharge, applied to a horizontal rolling rotor compressor. The device for reducing oil discharge is a prefabricated integral component and includes a base and a filter screen installed at one end of the base. The base connects the filter screen to the inlet of the exhaust pipe. The base expands outward from the connection end with the exhaust pipe to the installation end with the filter screen. The sum of the areas of the filter holes on the filter screen is greater than the area of ​​the inner hole of the exhaust pipe.

[0005] In one embodiment, the filter screen includes a central portion and a ring portion surrounding the central portion, the central portion being directly opposite the inner hole of the exhaust pipe, the central portion being a non-porous structure and the diameter d2 of the central portion being greater than or equal to the inner diameter D of the exhaust pipe, and the filter holes being formed on the ring portion.

[0006] In one embodiment, the filter screen is in the shape of a circular sheet, and the two sides of the edge of the filter screen are welded and fixed to the annular sheet-shaped support frame to form a filter assembly. One end of the base is provided with a step, and the filter assembly is connected to the step by interference fit or welding.

[0007] In one embodiment, the filter screen is in the shape of a circular sheet, and the edge of the filter screen is welded and fixed to the supporting frame of the annular outer edging structure to form a filter assembly. One end of the base is provided with a step, and the filter assembly is connected to the step by interference fitting or welding.

[0008] In one embodiment, the filter screen includes a central portion, a ring portion, and an edge portion. The central portion is directly opposite to the inner hole of the exhaust pipe and has the same diameter. The ring portion is a cylindrical wall that vertically connects the outer edge of the central portion and the inner edge of the edge portion. The edge portion has the same shape and size as the flange face and is welded together. The filter holes are formed on the central portion and the ring portion.

[0009] In one embodiment, one end of the base is provided with a flange surface extending outward, and the edge portion is mounted on the flange surface.

[0010] Secondly, this application provides a horizontal rolling rotor compressor, including a housing and a motor assembly and a pump assembly located inside the housing. The top of the housing has an opening, and a conduit is provided in the opening. An exhaust pipe is inserted into the outer section of the conduit, and the oil discharge reduction device described above is installed on the inner section of the conduit.

[0011] In one embodiment, the base includes an installation section, a flared section, and a connecting section. The installation section is connected to the exhaust pipe. The inner diameter d1 of the installation section is equal to the inner diameter D of the exhaust pipe. The outer diameter of the installation section is larger than the inner diameter of the conduit. The base and the conduit are connected by an interference fit.

[0012] In one embodiment, the base is made of spring steel, and at least one deformation groove is provided on the side wall of the mounting section, the deformation groove being arranged along the axial direction parallel to the mounting section.

[0013] In one embodiment, the inner section of the catheter is provided with a retaining ring that protrudes inward from the inner wall, and the outer wall of the mounting section is provided with an inverted conical hook that cooperates with the retaining ring.

[0014] Thirdly, this application provides a method for controlling the oil discharge volume of a horizontal rolling rotor compressor as described above, wherein the oil discharge reduction device is installed in the duct and the filter screen is directly opposite the inlet of the exhaust pipe.

[0015] In one embodiment, the following steps are included:

[0016] The oil discharge reduction device is provided, the oil discharge reduction device comprising a base and a filter screen mounted on the base; and

[0017] The oil discharge reduction device is installed in the conduit, so that the base connects the filter screen to the inlet of the exhaust pipe;

[0018] The oil discharge reduction device is placed inside the housing, and the installation section is pressed into the conduit by the deformation action of the deformation groove opened on the installation section of the base; after the installation section is pressed into the conduit, the inner diameter of the installation section is expanded from the outside of the housing by a tube expander.

[0019] The oil discharge reduction device, horizontal rolling rotor compressor, and oil discharge control method provided in this application have the following beneficial effects: The oil discharge reduction device is a prefabricated integral component including a base and a filter screen installed at one end of the base. The base connects the filter screen to the inlet of the exhaust pipe. The base expands outward from the connection end with the exhaust pipe to the installation end with the filter screen. The sum of the areas of the filter holes on the filter screen is greater than the inner hole area of ​​the exhaust pipe. Because the oil discharge reduction device is a prefabricated integral component, the assembly process can be simplified and the assembly efficiency improved. The filter screen can avoid direct impact of oil on the exhaust pipe. The design of the base expanding outward from the connection end with the exhaust pipe to the installation end with the filter screen causes the refrigerant flowing through the base to deflect, thereby allowing the refrigerant to undergo further separation at the base to separate the oil entrained in the refrigerant, improve the oil separation effect, reduce the oil discharge, and realize the control of the compressor's oil discharge at the end of the refrigerant flow path, which can more effectively control the oil discharge. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural schematic diagram of a horizontal rolling rotor compressor according to an embodiment of this application;

[0021] Figure 2 for Figure 1 A magnified structural diagram of part I in the diagram;

[0022] Figure 3 for Figure 2 A bottom view of the structure of the oil discharge reduction device in the middle;

[0023] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0024] Figure 5 for Figure 3 A three-dimensional structural diagram of the base of the oil discharge reduction device;

[0025] Figure 6 for Figure 3 A three-dimensional structural diagram of the filter assembly of the oil discharge reduction device in the middle;

[0026] Figure 7 for Figure 6 A schematic diagram of the main structure of the filtering component in the diagram;

[0027] Figure 8 For along Figure 7 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0028] Figure 9 This is a schematic diagram of the main structure of a filtering component according to another embodiment of this application;

[0029] Figure 10 For along Figure 9 Schematic diagram of the cross-sectional structure in the CC direction;

[0030] Figure 11 This is a cross-sectional structural schematic diagram of a horizontal rolling rotor compressor according to an embodiment of this application;

[0031] Figure 12 for Figure 11 Enlarged structural diagram of Part II;

[0032] Figure 13 This is a schematic cross-sectional view of the duct in section 12;

[0033] Figure 14 for Figure 11 A three-dimensional structural diagram of the oil discharge reduction device in the middle;

[0034] Figure 15 This is a three-dimensional structural schematic diagram of a device for reducing oil output according to another embodiment of this application;

[0035] Figure 16 for Figure 15 A three-dimensional structural diagram of the base;

[0036] Figure 17 for Figure 15 A schematic diagram of the three-dimensional structure of the filter screen.

[0037] The component labels in the diagram are as follows:

[0038] First side housing 10, main housing 20, second side housing 30, stator assembly 40, rotor assembly 50, pump body assembly 60, conduit 70 (of which, retaining ring 71), exhaust pipe 80, and oil discharge reduction device 90.

[0039] The base 91 includes an installation section 911, a flared section 912, a connecting section 913, a deformation groove 9111, an inverted conical hook 9112, a step 9121, and a flange face 9122; a filter assembly 92; a filter screen 921 includes a central part 9211, a ring part 9212, and an edge part 9213; and a support frame 922. Detailed Implementation

[0040] Before describing the embodiments in detail, it should be understood that this application is not limited to the detailed structures or element arrangements described below or in the accompanying drawings. This application can be implemented in other ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes only and should not be construed as limiting. The terms "comprising," "including," "having," and similar expressions used herein mean to include the items listed thereafter, their equivalents, and other additional items. In particular, when describing "an element," this application does not limit the number of elements to one, but may include multiple elements.

[0041] Roller compressors are divided into two types: vertical and horizontal. Horizontal roller compressors are mainly used in applications with strict space requirements, such as refrigeration, cold storage, and vehicle air conditioning.

[0042] In addition to performance indicators such as cooling capacity, power consumption, COP (Coefficient of Performance), and noise, the oil discharge rate is also a very important factor for rolling rotor compressors. A high oil discharge rate can easily lead to insufficient oil inside the compressor, worsening shaft lubrication conditions and ultimately causing reliability issues.

[0043] Compared to vertical rotary compressors, horizontal rotary compressors typically have a larger oil discharge rate, mainly due to the following two reasons:

[0044] (1) Part of the motor rotor is immersed in the refrigeration oil, and the rotor rotation carries oil, causing the refrigeration oil to splash.

[0045] (2) The exhaust pipe is usually located on the main housing near the pump body. The compressor exhaust cannot effectively utilize the oil separation effect of the motor coil, but is directly sucked into the exhaust pipe.

[0046] Currently, the most common approach to improving the oil discharge of horizontal rolling rotor compressors is to install an oil baffle between the pump body and the motor. The oil baffle is usually located on the main bearing or the muffler, as shown in Chinese Utility Model Patents No. 201820841573.0 and No. 201821367874.0. This type of measure to improve the oil discharge of horizontal rolling rotor compressors controls the oil discharge from the path. However, controlling the oil discharge from the path may not result in a significant reduction in the final oil discharge, and the entire assembly process is cumbersome and inefficient.

[0047] Therefore, this application provides an oil discharge reduction device, a horizontal rolling rotor compressor, and a method for controlling the oil discharge of the same, which can effectively control the oil discharge volume and simplify the assembly process.

[0048] Please see Figure 1 and Figure 2 One embodiment of the horizontal rolling rotor compressor of this application includes a housing and a motor assembly and a pump assembly 60 located inside the housing. The motor assembly is used to drive the pump assembly 60 to generate suction, compression and exhaust.

[0049] Specifically, the outer casing, along the horizontal axis of rotation, includes a first side casing 10, a main casing 20, and a second side casing 30. The first side casing 10 and the second side casing 30 are connected to both ends of the main casing 20, thereby forming a sealed space for accommodating the motor assembly and the pump assembly 60. The motor assembly includes a stator component 40 and a rotor component 50, which are fixed to the inner wall of the main casing 20. The pump assembly 60 includes a cylinder and a crankshaft connected to the cylinder piston. The rotor component 50 is connected to the crankshaft, thereby driving the crankshaft to rotate via the motor assembly 60. The crankshaft rotates eccentrically relative to the center of the cylinder, causing periodic changes in the compression chamber of the cylinder, enabling the pump assembly 60 to complete the processes of intake, compression, and exhaust. The top of the outer casing (main casing 20) has an opening, through which a conduit 70 is provided. An exhaust pipe 80 is inserted into the outer section of the conduit 70. The refrigerant exits the outer casing through the exhaust pipe 80 and then enters the refrigeration system for circulation.

[0050] Please refer to the following: Figure 3 and Figure 4 This application also provides an oil discharge reduction device 90, which is installed inside the housing of a horizontal rolling rotor compressor and on the inner side of the duct 70. Specifically, the oil discharge reduction device 90 is a prefabricated integral component, including a base 91 and a filter assembly 92 installed in the base 91. The oil discharge reduction device 90 is integrally installed inside the duct 70 by an interference fit and is directly opposite the exhaust pipe 80.

[0051] Please refer to the following: Figure 5 The base 91 is made of spring steel, such as but not limited to SK5, 65Mn, etc. The base 91 is flared outward from top to bottom (from the connection end with the exhaust pipe 80 to the installation end with the filter assembly 92), including the mounting section 911, the flared section 912, and the connecting section 913. The mounting section 911 mates with the duct 70 and connects to the exhaust pipe 80. The flared section 912 is used to install the filter assembly 92. The connecting section 913 connects the lower end of the mounting section 911 and the upper end of the flared section 912.

[0052] The inner diameter d1 of the mounting section 911 is equal to the inner diameter D of the exhaust pipe 80 and is connected to the exhaust pipe 80. The outer diameter of the mounting section 911 is larger than the inner diameter of the conduit 70, so that the base 91 is installed into the conduit 70 through an interference fit between the mounting section 911 and the conduit 70. At least one deformation groove 9111 is provided on the side wall of the mounting section 911. The deformation groove 9111 is arranged along the axial direction parallel to the mounting section 911, so that the mounting section 911 can be squeezed into the deformation groove 9111 after being subjected to force (pressed into the conduit 70). The mounting section 911 of the base 91 deforms when it is installed with the conduit 70 through an interference fit, so that the oil discharge reduction device 90 is installed into the conduit 70.

[0053] The diameter of the flared section 912 is larger than the diameter of the installation section 911. The opening of the flared section 912 is provided with a step 9121 to facilitate the installation and fixation of the filter assembly 92.

[0054] The connecting section 913 is truncated cone-shaped, with its upper end connected to the lower end of the mounting section 911 and its lower end connected to the upper end of the flared section 912.

[0055] Please refer to the following: Figure 6 , Figure 7 and Figure 8 The filter assembly 92 can be fixedly connected to the base 91 by means of interference fit, welding, or adhesive bonding. Specifically, the filter assembly 92 is installed at the step 9121 of the flared section 912 of the base 91 by means of interference fit, welding, or adhesive bonding. The filter assembly 92 includes a filter screen 921 and a support frame 922. The filter screen 921 is circular, and the support frame 922 is annular. The two sides of the edge of the filter screen 921 are fixed to the two support frames 922 by pressure welding.

[0056] It is understandable that the oil discharge reduction device 90 is a prefabricated integral component and includes a base 91 and a filter screen 921 installed at one end of the base 91. The base 91 connects the filter screen 921 with the inlet of the exhaust pipe 80. The base 91 extends outward from the connection end with the exhaust pipe 80 to the installation end with the filter screen 921.

[0057] The filter screen 921 is made of metal, and the sum of the areas of the filter holes on the filter screen 921 is greater than the area of ​​the inner hole of the exhaust pipe 80. The filter screen 921 includes a central part 9211 located at the center, an annular part 9212 surrounding the central part 9211, and an edge part 9213 connected to the support frame 922. The central part 9211 is directly opposite to the inner hole of the exhaust pipe 80. The center of the central part 9211 is directly opposite to the axis of the lower end of the exhaust pipe 80. The central part 9211 has a non-porous structure and its diameter d2 is greater than or equal to the inner diameter D of the exhaust pipe 80. Filter holes are formed on the annular part 9212, and the edge part 9213 is embedded in the support frame 922. In this way, the direct impact of the refrigerant oil on the exhaust pipe 80 can be avoided. At the same time, through the deflection flow of the refrigerant, the refrigerant gas collides with the flared section 912 of the base 91 to further separate the oil and gas, thereby improving the oil separation effect.

[0058] Understandably, the design of filter 921 prevents direct impact of oil on exhaust pipe 80. The design of base 91, which extends outward from the connection end with exhaust pipe 80 to the installation end of filter 921, causes the refrigerant flowing through base 91 to deflect, thus allowing further separation of the refrigerant in base 91. This separates the oil mixed in with the refrigerant, improves the oil separation effect, reduces the amount of oil discharged, and enables control of the compressor's oil discharge at the end of the refrigerant flow path. This allows for more effective control of the oil discharge and significantly improves the oil discharge control effect.

[0059] During assembly, before assembling the first side housing 10, the oil discharge reduction device 90 is first placed inside the main housing 20 and moved along the inner wall of the main housing 20. Then, using specific tooling, the installation section 911 is pressed into the conduit 70 by the deformation action of the deformation groove 911. After pressing, the inner diameter of the installation section 911 is further expanded from the outside of the main housing 20 using a tube expander, which can further improve reliability.

[0060] Please see Figure 9 and Figure 10 In another embodiment, the structure of the filter screen 921 of the filter assembly 92 is largely the same as that in the aforementioned embodiment, except that the structure of the support frame 922 is different. In this embodiment, the support frame 922 is an annular outer edge structure with a groove formed on its inner side. When the edge portion 9213 of the filter screen 921 is placed into the groove, it can be fixed by the two side walls of the groove through compression deformation. This structure simplifies the processing difficulty of the filter assembly 92 and further reduces costs.

[0061] Please see Figure 11 and Figure 12 Another embodiment of the horizontal rotary compressor of this application includes a housing and a motor assembly and a pump assembly located inside the housing. The motor assembly drives the pump assembly to generate suction, compression, and exhaust. The structure of the horizontal rotary compressor of this embodiment is similar to... Figure 1 The embodiments are largely the same, except that the oil discharge reduction device 90 and the conduit 70 are assembled in a way that the oil discharge reduction device 90 is snapped into the conduit 70.

[0062] Please refer to the following: Figure 13 and Figure 14 The lower end of the conduit 70 is provided with a retaining ring 71 protruding inward from the inner wall; the outer wall of the mounting section 911 of the base 91 is provided with an inverted conical hook 9112. The inverted conical hook 9112 can cooperate with the retaining ring 71 on the inner wall of the conduit 70. When the oil discharge reduction device 90 is inserted into the conduit 70, the mounting section 911 of the base 91 is pressed against the deformation groove 9111 by force. After the inverted conical hook 9112 passes the retaining ring 71, the deformation of the deformation groove 9111 is restored, and the oil discharge reduction device 90 is successfully engaged with the conduit 70. The cooperation structure of the retaining ring 71 and the inverted conical hook 9112 further ensures that the oil discharge reduction device 90 is firmly fixed inside the conduit 70, and the connection reliability is further improved.

[0063] The aforementioned embodiment of the oil discharge reduction device is more suitable for scenarios where the interior of a horizontal rolling rotor compressor is small and the assembly space is limited.

[0064] When the internal space of the casing of a horizontal rotating rotor compressor is relatively large, please refer to [the relevant documentation / reference]. Figure 15The base 91 and filter screen 921 of the oil discharge reduction device 90 are welded together by pressure welding or other means through flange face.

[0065] Specifically, please refer to the following: Figure 16 The base 91 is shaped like an outward flare from top to bottom, including an installation section 911, a flared section 912 and a connecting section 913. The installation section 911 is fitted with the conduit 70 and connected to the exhaust pipe 80. The flared section 912 is used to install the filter screen 921. The connecting section 913 connects the lower end of the installation section 911 and the upper end of the flared section 912.

[0066] The inner diameter d1 of the mounting section 911 is equal to the inner diameter D of the exhaust pipe 80. At least one deformation groove 9111 is formed on the side wall of the mounting section 911, and the deformation groove 9111 is arranged axially parallel to the mounting section 911, allowing the mounting section 911 to be pressed into the deformation groove 9111 after being subjected to force (pressed into the conduit 70). The mounting section 911 of the base 91 deforms during interference fit installation with the conduit 70, thus enabling the oil discharge reduction device 90 to be installed into the conduit 70.

[0067] The diameter of the flared section 912 is larger than the diameter of the mounting section 911. The flared section 912 has a flange surface 9122 extending outward at the opening to facilitate the installation and fixing of the filter screen 921.

[0068] Accordingly, please refer to the following: Figure 17 The filter screen 921 is made of metal and is fixed to the flange face 9122 of the flared section 912 of the base 91 by welding, gluing, or other methods. The filter screen 921 is cylindrical, and the sum of the cross-sectional areas of the filter holes on the filter screen 921 is greater than the cross-sectional area of ​​the exhaust pipe 80. The filter screen 921 includes a central portion 9211, a ring portion 9212 surrounding the central portion 9211, and an edge portion 9213 connected to the support frame 922. The central portion 9211 is directly opposite to the inner hole of the exhaust pipe 80 and has the same diameter, and filter holes are formed on the central portion 9211. The ring portion 9212 is a cylindrical wall that vertically connects the outer edge of the central portion 9211 and the inner edge of the edge portion 9213, and filter holes are formed on the ring portion 9212. The edge portion 9213 has the same shape and size as the flange face 9122. The filter screen 921 is installed on the base 91 by welding after the end face between the edge part 9213 and the flange face 9122 is connected.

[0069] The oil discharge reduction device 90 in this embodiment can further increase the area of ​​the filter screen, reducing the impact of the filter screen setting on the compressor's energy efficiency.

[0070] It should be noted that the filter structure in the accompanying drawings of this application is for illustrative purposes only and does not constitute a limitation on the solution. In addition to the round holes shown in the figure, the mesh holes on the filter 921 can also be in other forms, such as rhombuses, squares, etc.

[0071] This application also provides a method for controlling the oil discharge volume of a horizontal rolling rotor compressor, wherein an oil discharge reduction device 90 is installed in the housing, and the oil discharge reduction device 90 is installed in the conduit 70 of the horizontal rolling rotor compressor and is directly opposite to the inlet of the exhaust pipe 80. Specifically, the method for controlling the oil discharge volume of a horizontal rolling rotor compressor includes the following steps:

[0072] An oil discharge reduction device 90 is provided, comprising a base 91 and a filter screen 921 mounted on the base 91; and

[0073] The oil discharge reduction device 90 is installed in the conduit 70 of the horizontal rolling rotor compressor, so that the base 91 is connected to the filter screen 921 and the inlet of the exhaust pipe 80.

[0074] The mounting section 911 of the base 91 is interference-fitted with the conduit 70. More specifically, the oil discharge reduction device 90 is placed inside the main housing 20, and the mounting section 911 is pressed into the conduit 70 by the deformation of the deformation groove 9111 on the mounting section 911. After being pressed in, the inner diameter of the mounting section 911 is further expanded from the outside of the main housing 20 by a tube expander.

[0075] The oil discharge reduction device, horizontal rolling rotor compressor, and oil discharge control method of this application can overcome the problem that "the improvement of oil discharge by improving the flow path is not obvious". By controlling the oil discharge of the compressor at the end of the refrigerant flow path, the oil discharge control effect can be significantly improved; the assembly process is simplified and the overall installation is convenient.

[0076] The concepts described herein may be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of this application is determined by the appended claims, and not by the foregoing description. Any modifications within the literal meaning and equivalent scope of the claims should fall within the scope of those claims.

Claims

1. A device for reducing oil output, applied to a horizontal rotating rotor compressor, characterized in that: The oil discharge reduction device (90) is a prefabricated integral component and includes a base (91) and a filter screen (921) installed at one end of the base (91). The base (91) connects the filter screen (921) to the inlet of the exhaust pipe (80). The base (91) expands outward from the connection end with the exhaust pipe (80) to the installation end with the filter screen (921). The sum of the areas of the filter holes on the filter screen (921) is greater than the area of ​​the inner hole of the exhaust pipe (80). The filter screen (921) includes a central part (9211), which is directly opposite the inner hole of the exhaust pipe (80). The diameter of the central part (9211) is greater than or equal to the inner diameter of the exhaust pipe (80). The central part (9211) is a non-porous structure or the filter holes are formed on the central part (9211). The base (91) includes an installation section (911), a flared section (912), and a connecting section (913). The mounting section (911) is connected to the exhaust pipe (80), and the inner diameter d1 of the mounting section (911) is equal to the inner diameter D of the exhaust pipe (80); The flared section (912) is used to install the filter screen (921), and the diameter of the flared section (912) is larger than the diameter of the installation section (911); The connecting section (913) is frustum-shaped, with its upper end connected to the lower end of the mounting section (911) and its lower end connected to the upper end of the flared section (912). At least one deformation groove (9111) is provided on the side wall of the installation section (911), and the deformation groove (9111) is arranged along the axial direction parallel to the installation section (911); the conduit (70) for installing the oil discharge reduction device is provided with a retaining ring (71) protruding inward from the inner wall, and the outer wall of the installation section (911) is provided with an inverted conical hook (9112) that cooperates with the retaining ring (71). When the oil discharge reduction device is inserted into the conduit (70), the installation section (911) is pressed into the deformation groove (9111) by force. After the inverted cone hook (9112) passes through the retaining ring (71), the deformation of the deformation groove (9111) is restored, so as to connect the oil discharge reduction device to the conduit (70).

2. The oil discharge reduction device as described in claim 1, characterized in that: The filter (921) includes a ring (9212) surrounding the central portion (9211), the central portion (9211) having a non-porous structure, and the filter holes being formed on the ring (9212).

3. The oil discharge reduction device as described in claim 2, characterized in that: The filter screen (921) is in the shape of a circular sheet. The two sides of the edge of the filter screen (921) are welded and fixed to the annular sheet-shaped support frame (922) to form a filter assembly (92). One end of the base (91) is provided with a step (9121). The filter assembly (92) is connected to the step (9121) by interference pressing or welding.

4. The oil discharge reduction device as described in claim 2, characterized in that: The filter screen (921) is in the shape of a circular sheet. The edge of the filter screen (921) is welded and fixed to the support frame (922) of the annular outer edge structure to form a filter assembly (92). One end of the base (91) is provided with a step (9121). The filter assembly (92) is connected to the step (9121) by interference pressing or welding.

5. The oil discharge reduction device as described in claim 1, characterized in that: The filter screen (921) includes a ring portion (9212) and an edge portion (9213). The diameter of the central portion (9211) is equal to that of the inner hole of the exhaust pipe (80). The ring portion (9212) is a cylindrical wall that vertically connects the outer edge of the central portion (9211) and the inner edge of the edge portion (9213). The edge portion (9213) has the same shape and size as the flange surface (9122) provided on the base (91) and is welded together. The filter holes are opened on the central portion (9211) and the ring portion (9212).

6. The oil discharge reduction device as described in claim 5, characterized in that: One end of the base (91) is provided with a flange surface (9122) extending outward, and the edge portion (9213) is installed on the flange surface (9122).

7. A horizontal rolling rotor compressor, characterized in that: The device includes a housing and a motor assembly and a pump assembly (60) located inside the housing. The top of the housing has an opening, and a conduit (70) is provided in the opening. An exhaust pipe (80) is inserted into the outer section of the conduit (70), and an oil discharge reduction device (90) as described in any one of claims 1 to 6 is installed on the inner section of the conduit (70).

8. The horizontal rolling rotor compressor as described in claim 7, characterized in that: The outer diameter of the mounting section (911) is larger than the inner diameter of the conduit (70), and the base (91) is interference-fitted with the conduit (70).

9. The horizontal rolling rotor compressor as described in claim 8, characterized in that: The base (91) is made of spring steel.

10. A method for controlling the oil discharge volume of a horizontal rolling rotor compressor as described in any one of claims 7 to 9, characterized in that: The oil discharge reduction device (90) is installed in the conduit (70) and the filter (921) is directly opposite the inlet of the exhaust pipe (80).

11. The method for controlling the oil discharge volume of a horizontal rolling rotor compressor as described in claim 10, characterized in that, Includes the following steps: Provided is the oil discharge reduction device (90), the oil discharge reduction device (90) including a base (91) and a filter screen (921) mounted on the base (91); and The oil discharge reduction device (90) is installed in the conduit (70), so that the base (91) is connected to the filter screen (921) and the inlet of the exhaust pipe (80); The oil discharge reduction device (90) is placed inside the housing. The installation section (911) of the base (91) is deformed by the deformation groove (9111) opened on the installation section (911) to press the installation section (911) into the conduit (70). After the installation section (911) is pressed into the conduit (70), the inner diameter of the installation section (911) is expanded from the outside of the housing by a tube expander.

Images