Integrated device
By designing a detachable oil return assembly connected to the flow channel plate in the thermal management system, the problem of oil return hole blockage was solved, enabling convenient disassembly and maintenance, reducing parts replacement costs, and improving the sealing performance and operational stability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING SANHUA AUTOMOTIVE THERMAL MANAGEMENT TECHNOLOGY CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-12
AI Technical Summary
The oil return hole is prone to clogging in the thermal management system, resulting in poor oil return performance. Furthermore, the existing device is not easy to disassemble, increasing the cost of parts replacement.
Design an integrated device in which the oil return component and the flow channel plate are detachably connected by threaded or snap-fit connections to facilitate the disassembly and installation of the oil return component, and an O-ring sealing structure to ensure airtightness.
It enables easy disassembly of the oil return hole, reduces parts replacement costs, improves maintenance convenience, and prevents leakage through O-ring sealing, ensuring stable system operation.
Smart Images
Figure CN224230403U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fluid control, and in particular to an integrated device for a thermal management system. Background Technology
[0002] In thermal management integrated devices, the oil return component is usually sealed in the liquid storage chamber and cannot be disassembled separately without damage. During long-term use, some media will accumulate in the oil return hole, causing partial or complete blockage of the oil return hole and affecting the oil return effect. Utility Model Content
[0003] The purpose of this application is to provide an integrated device that helps to solve the problem of oil return hole blockage during use, makes the oil return hole device easy to disassemble, and further reduces the replacement cost of parts.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] An integrated device includes a liquid storage component, a flow channel plate, and an oil return component. The liquid storage component and the flow channel plate are fixedly connected or limitedly connected. The liquid storage component has a liquid storage cavity, the flow channel plate has a first flow channel, and the oil return component has an oil return hole communicating with the liquid storage cavity and the first flow channel. The flow channel plate includes a mounting portion with a mounting opening communicating with the first flow channel. A portion of the oil return component is located in the first flow channel, and the oil return component is detachably connected to the mounting portion.
[0006] This application provides an integrated device in which a liquid storage component has a liquid storage chamber, a flow channel plate has a first flow channel, and an oil return component has an oil return hole communicating with the liquid storage chamber and the first flow channel. The flow channel plate includes a mounting portion with a mounting opening communicating with the first flow channel. A portion of the oil return component is located in the first flow channel, and some components are detachably connected to the mounting portion. In this application, the oil return hole component is detachably fixed to the flow channel plate, making it easy to disassemble and facilitating future maintenance, further reducing parts replacement costs. Attached Figure Description
[0007] Figure 1 A three-dimensional structural schematic diagram of an integrated device provided in this application;
[0008] Figure 2 for Figure 1 The diagram shown is a front view of an integrated device.
[0009] Figure 3 for Figure 2 A schematic cross-sectional view of an integrated device along plane AA is shown.
[0010] Figure 4 for Figure 3 The diagram shows a partial cross-sectional view of an integrated device.
[0011] Figure 5 This is a top view schematic diagram of an integrated device.
[0012] Figure 6 for Figure 5 A schematic cross-sectional view of an integrated device along plane BB is shown.
[0013] Figure 7 This is a top view of the flow channel plate shown.
[0014] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the flow channel plate along the CC plane.
[0015] Figure 9 for Figure 1 A three-dimensional structural schematic diagram of one embodiment of the oil return assembly is shown.
[0016] Figure 10 for Figure 9 A front view schematic diagram of the oil return assembly shown;
[0017] Figure 11 for Figure 10 The schematic diagram of the cross-sectional structure of the oil return assembly along the DD plane is shown.
[0018] Figure 12 for Figure 1 Another embodiment of the oil return assembly shown is placed in a three-dimensional structural schematic diagram;
[0019] Figure 13 for Figure 12 A front view schematic diagram of the oil return assembly shown;
[0020] Figure 14 for Figure 13 The diagram shows a cross-sectional view of the oil return assembly along the EE plane.
[0021] Figure label:
[0022] 100. Integrated device; 1. Liquid storage assembly; 11. Liquid storage chamber; 2. Flow channel plate; 21. First flow channel; 22. Mounting part; 221. Mounting port; 222. First side wall part; 223. Second side wall part; 23. Positioning hole; 3. Oil return assembly; 301. Oil return hole; 302. First hole; 31. First part; 311. First sealing part; 311a. First groove; 311b. Second protrusion; 312. Main body part; 312a. First protrusion; 312 b. First limiting part; 313. Third protrusion; 314. First notch; 32. Second part; 321. Second sealing part; 321a. Second groove; 322. Fixing part; 323. First slot; 324. First wall part; 325. Second wall part; 326. Second limiting part; 33. First sealing element; 34. Second sealing element; 35. Filter part; 351. Filter screen; 352. Bracket; 4. Positioning element; 101. Channel; 102. First plate. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0024] This application provides an integrated device 100, which can be applied to a thermal management system. The thermal management system can be used in household air conditioners, automotive air conditioners, energy storage systems, etc.
[0025] like Figures 1-14 As shown, this application provides an integrated device 100, including a liquid storage component 1, a flow channel plate 2, and an oil return component 3. The liquid storage component 1 and the flow channel plate 2 are fixedly connected or limitedly connected, for example, by welding or bonding. In this application, the liquid storage component 1 and the flow channel plate 2 are fixed by welding. The welding fixation between the liquid storage component 1 and the flow channel plate 2 can ensure the sealing between the liquid storage component 1 and the flow channel plate 2. The liquid storage component 1 has a liquid storage cavity 11, and the flow channel plate 2 has a first flow channel 21. In this application, the oil return component 3 is cylindrical and has an oil return hole 301 that connects the liquid storage cavity 11 and the first flow channel 21. Figure 5 and Figure 6This is a view of the integrated device 100 in its working state. The lubricating oil, with its high density, accumulates at the bottom of the reservoir 11. The function of the oil return hole 301 is to introduce the lubricating oil accumulated in the reservoir 11 into the first flow channel 21, flow through the first flow channel 21 and the connecting pipe between the flow channel plate 2 and the compressor, and return to the compressor, thus providing lubrication. The flow channel plate 2 includes a mounting part 22 with a mounting port 221 that communicates with the first flow channel 21. The oil return assembly 3 is located in the first flow channel 21, and the oil return assembly 3 is detachably connected to the mounting part 22, for example, by a threaded connection, snap-fit connection, or flange connection. In this application, the oil return assembly 3 is fixed to the mounting part 22 by a threaded connection. This threaded connection makes the oil return assembly 3 easy to disassemble, facilitating later maintenance and further reducing parts replacement costs. During assembly, after the liquid storage component 1 is welded and fixed to the flow channel plate 2, the entire oil return component 3 is installed through the mounting port 221, so that part of the oil return component 3 enters the first flow channel 21. The oil return hole 301 connects the liquid storage chamber 11 and the first flow channel 21. The oil return component 3 is fixedly connected to part of the mounting part 22 by threads. When disassembly is required, the entire oil return component 3 can be taken out for easy maintenance later.
[0026] The integrated device 100 includes a first plate 102, which is located between the liquid storage chamber 11 and the first flow channel 21. A portion of the wall forming the channel 101 is located on the first plate 102. In this application, there is only one first plate 102, and it is located within the liquid storage assembly 1. Having only one layer of first plates 102 reduces assembly steps between components, simplifies the assembly process, and also helps reduce the weight of the entire integrated device 100, thus lowering costs to some extent. Of course, in other specific embodiments, there can be multiple first plates 102. The arrangement of multiple first plates 102 facilitates multifunctional integration; for example, sensors (such as temperature and pressure sensors) can be embedded in the layers for real-time monitoring. The integrated device 100 also includes a positioning member 4, which is columnar. The positioning member 4 is fixedly connected to or limited by the first plate 102, for example, by welding or bonding. In this application, the specific connection method is welding. In other specific embodiments, the positioning member 4 and the first plate 102 can be an integral structure to enhance structural strength. The flow channel plate 2 has positioning holes 23, and there are at least two positioning holes 23. At least part of the positioning component 4 is located in the positioning holes 23, which can position the liquid storage component 1 and the flow channel plate 2 for easy installation and fixation. Figure 5 and Figure 6The diagram shows the integrated device 100 in operation. Oil entering the reservoir 11 is stored at the bottom of the reservoir 11. The accumulated oil passes through the oil return assembly 3 and enters the first flow channel 21, specifically through the oil return hole 301. After the compressor stops, some oil may remain in the first flow channel 21. This oil accumulation reduces the flow area of the first flow channel 21. When the compressor resumes normal operation, it can draw the accumulated oil from the first flow channel 21, returning the oil to the compressor.
[0027] In this application, as Figure 3 , Figure 4 and Figures 7-14As shown, the oil return assembly 3 includes a first part 31 and a second part 32. The first part 31 and the second part 32 can be an integral structure, meaning they can be manufactured using 3D printing or injection molding processes. Alternatively, they can be separate structures, fixed using methods such as welding, bonding, or snap-fit connections. In this application, the first part 31 and the second part 32 are separate structures, fixed together by snap-fit connections. This method of separate assembly improves the utilization rate of components, facilitates future upgrades and replacements of parts, and further simplifies maintenance. Disassembling the components also reduces the processing difficulty of individual parts, further lowering processing costs. When the first part 31 needs replacement, the oil return assembly 3 can be removed from the flow channel plate 2, and only the first part 31 needs to be replaced, reducing component waste. The first part 31 includes a third protrusion 313 and a first notch 314, which are located at the end of the first part 31 near the second part 32. The opening of the main body 312 faces the second part 32. The third protrusion 313 protrudes along the outer peripheral wall of the main body 312, and the first notch 314 penetrates the third protrusion 313 and the main body 312. Due to the hollow structure of part of the main body 312 and the presence of the first notch 314, the third protrusion 313 can elastically move towards the axis of the oil return assembly 3 under the intervention of external force, facilitating its installation with the second part 32. The second part 32 of the oil return assembly 3 includes a second sealing part 321 and a fixing part 322, which are integrally formed. In other specific embodiments, the second sealing part 321 and the fixing part 322 can also be fixedly connected or limitedly connected. The second part 32 has a first slot 323, which opens towards the liquid storage assembly 1. The second part 32 includes a first wall portion 324 and a second wall portion 325. The first wall portion 324 is farther away from the fixing part 322 relative to the second wall portion 325. The maximum circumferential dimension of the first wall portion 324 is smaller than the maximum circumferential dimension of the second wall portion 325. Therefore, a second limiting part 326 is provided between the first wall portion 324 and the second wall portion 325. A third protrusion 313 and a portion of the first notch 314 are located in the first slot 323. The third protrusion 313 can abut against the second limiting part 326. The depth of the first slot 323 along the thickness direction of the flow channel plate 2 is greater than or equal to the thickness of the third protrusion 313 along the thickness direction of the flow channel plate 2. When it is greater, it can compensate for the processing error of the first part 31 along the thickness direction of the flow channel plate 2. The thickness direction of the flow channel plate 2 is as follows: Figure 2As shown. The second sealing part 321 is sealed to the mounting part 22 of the partial flow channel plate 2. The fixing part 322 is detachably connected to the partial mounting part 22, such as by threaded connection, pin connection, snap-fit connection, etc. In this application, the fixing part 322 has threads, and the fixing part 322 is threaded to the mounting part 22. The mounting part 22 of the flow channel plate 2 includes a first side wall part 222 and a second side wall part 223. The first side wall part 222 is away from the liquid storage component 1 relative to the second side wall part 223. The first side wall part 222 has threads, and the fixing part 322 is threaded to the first side wall part 222. The end of the second part 32 has an internal hexagonal groove. The internal hexagonal groove facilitates the installation and removal of the oil return component 3. At the same time, the internal hexagonal groove allows the entire oil return component 3 to be recessed into the mounting opening 221 of the flow channel plate 2, saving space and contributing to a compact structure.
[0028] The oil return assembly 3 includes a second seal 34, which is an O-ring in this application. O-rings are standard parts, facilitating replacement and maintenance, and contributing to cost savings to some extent. The second seal 34 is fitted onto the second sealing portion 321, which has a second groove 321a. The second groove 321a opens towards the outer peripheral wall of the second sealing portion 321. The fixing portion 322 is located away from the liquid storage assembly 1 relative to the second groove 321a. At least a portion of the second seal 34 is located in the second groove 321a, and the second seal 34 abuts against the second side wall portion 223 for sealing. The second groove 321a helps prevent the second seal 34 from falling off or shifting during installation or disassembly of the oil return assembly 3, further ensuring the sealing performance of the first flow channel 21 and preventing leakage.
[0029] The first part 31 is closer to the liquid storage chamber 11 than the second part 32. The oil return hole 301 is located in the first part 31 near the liquid storage chamber 11 and can connect the liquid storage chamber 11 and the first flow channel 21. The first part 31 of the oil return assembly 3 has a hollow structure and includes a first hole 302. The first hole 302 is located on the peripheral sidewall of the first part 31 and penetrates through the peripheral sidewall of the first part 31. The first hole 302 connects the oil return hole 301 and the first flow channel 21. The setting of the first hole 302 can reduce the weight of the entire oil return assembly 3 and also reduce the volume of the oil return assembly 3 in the first flow channel 21, thereby helping to reduce the impact on the flow resistance in the first flow channel 21. At least a portion of the second part 32 is located at the mounting port 221, and the portion of the second part 32 is fixedly connected or limited to the mounting part 22, for example, by welding or threaded connection. In this application, the portion of the second part 32 is fixed to the mounting part 22 by threaded connection. Threaded connection facilitates disassembly, making subsequent maintenance more convenient and further reducing the cost of replacing parts.
[0030] The first part 31 includes a first sealing part 311 and a main body part 312. The first sealing part 311 and the main body part 312 are an integral structure, that is, the first sealing part 311 and the main body part 312 are integrally formed by injection molding. In other embodiments, the first sealing part 311 and the main body part 312 can also be fixedly connected or limitedly connected. The specific fixing method can be welding connection, threaded connection, etc. In this application, the first sealing part 311 and the main body part 312 are integrally formed by injection molding. The integrated device 100 has a channel 101, part of the channel 101 is located in the liquid storage component 1, and part of the first part 31 is located in the channel 101. The first sealing part 311 is sealed to the wall forming the channel 101. A first plane is defined, which is perpendicular to the thickness direction of the flow channel plate 2. Along the thickness direction of the flow channel plate 2, the projection of the wall forming the channel 101 on the first plane coincides with the projection of the mounting port 221 on the first plane. Compared to the mounting port 221 being located on the side wall perpendicular to the thickness direction of the flow channel plate 2, the oil return assembly 3 is arranged along the thickness direction of the flow channel plate 2, which makes it easier to install and remove the oil return assembly 3. The mounting port 221 is located on the wall of the flow channel plate 2 along the thickness direction and penetrates the flow channel plate 2. As shown in the thickness direction of the flow channel plate 2, the liquid storage assembly 1 is welded to the end of the flow channel plate 2. When installing the oil return assembly 3, the oil return assembly 3 is inserted into the mounting port 221 from the wall of the flow channel plate 2 where the mounting port 221 is opened. The oil return assembly 3 is threadedly connected to the mounting part 22, that is, the oil return assembly 3 is screwed into the flow channel plate 2, so that part of the oil return assembly 3 is located in the first flow channel 21. The first sealing part 311 of the oil return assembly 3 is sealed to the wall forming the channel 101.
[0031] In this application, as Figure 3 , Figure 4 and Figures 9-11As shown, the first sealing part 311 has a first groove 311a, which opens towards the outer peripheral wall of the first sealing part 311. The oil return assembly 3 includes a first sealing element 33, which is sleeved on the first sealing part 311, meaning at least a portion of the first sealing element 33 is located in the first groove 311a. The first groove 311a helps prevent the first sealing element 33 from falling off or shifting during the installation or removal of the oil return assembly 3, further ensuring the sealing between the liquid storage chamber 11 and the first flow channel 21. A portion of the oil return assembly 3 and the first sealing part 311 are located inside a portion of the channel 101, and the first sealing element 33 abuts against the wall forming the channel 101 for sealing. In this embodiment, the first sealing element 33 is an O-ring. This method achieves radial sealing between the first sealing element 33 and the channel 101. This sealing method is suitable for dynamic sealing, which is beneficial for a compact structure. Furthermore, since the O-ring is a standard part, it is easy to replace and maintain, which helps to save costs to a certain extent. The main body 312 also includes a first protrusion 312a. The circumferential dimension of the first protrusion 312a is larger than the axial dimension of the first sealing part 311. Therefore, a first limiting part 312b is provided between the first protrusion 312a and the first sealing part 311. The first limiting part 312b is arranged in the direction of the liquid storage assembly 1 and abuts against the end wall of the forming channel 101. The abutment between the first limiting part 312b and the end wall of the forming channel 101 helps to limit the length of the return oil assembly 3 entering the channel 101. Furthermore, it can limit the length of the return oil assembly 3 in the liquid storage cavity 11, preventing the length of the return oil assembly 3 in the liquid storage cavity 11 from being too long and affecting the connection between the return oil hole 301 and the liquid storage cavity 11 and the first flow channel 21. In this embodiment, the oil return hole 301 is located at the end of the first part 31. Of course, in other embodiments, if the length of the oil return assembly 3 in the liquid storage cavity 11 is too long, the oil return hole 301 can also be set on the peripheral wall side of the first part 31 located in the liquid storage cavity 11.
[0032] In some other embodiments, the oil return assembly 3 includes a first seal 33 located at the end of the first sealing portion 311 facing the liquid storage assembly 1. The first seal 33 has an annular structure and a through hole that connects the oil return hole 301 and the liquid storage chamber 11. In this embodiment, the first seal 33 is a sealing gasket. The first seal 33 is fixedly connected or limitedly connected to the first sealing portion 311, for example, by vulcanization, bonding, or welding. The first seal 33 abuts against the end wall of the channel 101 facing the flow channel plate 2 for sealing. This end-face sealing method helps reduce the wear of the first seal 33, improves its service life, and reduces costs to some extent. In some embodiments, such as Figures 12-14As shown, the first sealing part 311 includes a second protrusion 311b. There are multiple second protrusions 311b. In this embodiment, the second protrusions 311b are evenly arranged along the outer peripheral wall of a portion of the main body 312. The first sealing part 311 is interference-fitted with the wall forming the channel 101, that is, the second protrusion 311b can abut against and seal with the wall forming the channel 101. The hard sealing abutment method has higher wear resistance than the soft sealing method, resulting in a longer service life and reduced material consumption. During the installation or disassembly of the oil return assembly 3, the sealing ring is prevented from falling off, simplifying the installation process.
[0033] In this application, as Figure 3 , Figure 4 and Figures 9-14 As shown, the oil return assembly 3 includes a filter section 35, at least a portion of which is located in the liquid storage chamber 11. The filter section 35 is injection molded to the first part 31 of the oil return assembly 3, or the filter section 35 is fixedly connected to or limited by the first part 31. Specifically, the filter section 35 includes a filter screen 351 and a support 352. The filter screen 351 is fixedly connected to or limited by the support 352, for example, by adhesive bonding. Similarly, the filter screen 351 and the support 352 are an integral structure. In this embodiment of the oil return assembly 3, the filter screen 351 is integrally injection molded with the support 352 as an insert, simplifying the processing steps. The integral injection molding has no seams or connection points, improving the overall durability of the oil return assembly 3. The support 352 is fixedly connected to or limited by the first part 31 of the oil return assembly 3, for example, by snap-fit connection, welding, etc. Figures 9-11 As shown, the bracket 352 is fixed to the first part 31 by welding, which simplifies the assembly process and reduces labor and post-processing costs. Figures 12-14 As shown, the bracket 352 is snap-fitted to the first part 31, which improves the utilization rate of components, facilitates the replacement of some components in the later stage, and further facilitates later maintenance. At the same time, disassembling the components also helps to reduce the processing difficulty of individual components, and further reduces the processing cost to a certain extent. Similarly, in other embodiments of the oil return assembly 3, the bracket 352 and the first part 31 can also be an integral structure. The filter screen 351 and the bracket 352 are located in the liquid storage chamber 11. After the medium is filtered by the filter screen 351, it flows through the oil return hole 301. The filter screen 351 can filter impurities, thereby preventing the oil return hole 301 from being blocked, which is conducive to the stable operation of the integrated device 100.
[0034] The difference between this embodiment and the previous one is that the oil return assembly 3 includes a filter screen 351. The filter screen 351 is fixedly connected or limitedly connected to the first part 31 of the oil return assembly 3. The first part 31 has a hollow structure, and the filter screen 351 can be embedded in the inner cavity of the first part 31 or sleeved on the first part 31. Similarly, the filter screen 351 and the first part 31 can also be an integral structure. The filter screen 351 can be injection molded as an insert with the first part 31. The filter screen 351 is located in the first flow channel 21. After being filtered by the filter screen 351, the accumulated oil flows into the first flow channel 21. The integrated structure of the filter screen 351 and the first part 31 makes the oil return assembly 3 compact.
[0035] The above-described embodiments are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications without departing from the concept of this utility model, and these modifications all fall within the protection scope of this utility model.
Claims
1. An integrated device, characterized in that, It includes a liquid storage component (1), a flow channel plate (2) and an oil return component (3). The liquid storage component (1) and the flow channel plate (2) are fixedly connected or limitedly connected. The liquid storage component (1) has a liquid storage cavity (11). The flow channel plate (2) has a first flow channel (21). The oil return component (3) has an oil return hole (301). The oil return hole (301) connects the liquid storage cavity (11) and the first flow channel (21). The flow channel plate (2) includes a mounting part (22), which has a mounting port (221) that communicates with the first flow channel (21). Part of the oil return assembly (3) is located in the first flow channel (21), and the oil return assembly (3) is detachably connected to the mounting part (22).
2. The integrated device according to claim 1, characterized in that, The oil return assembly (3) includes a first part (31) and a second part (32). The first part (31) and the second part (32) are an integral structure, or the first part (31) and the second part (32) are fixedly connected or limitedly connected. The first part (31) is closer to the liquid storage assembly (1) than the second part (32). The oil return hole (301) is located in the first part (31). At least part of the second part (32) is located in the mounting port (221). Part of the second part (32) is detachably connected to the mounting part (22).
3. The integrated device according to claim 2, characterized in that, The first part (31) is a hollow structure. The first part (31) includes a first hole (302). The first hole (302) is located on the peripheral sidewall of the first part (31). The first hole (302) penetrates the peripheral sidewall of the first part (31). The first hole (302) connects the oil return hole (301) and the first flow channel (21).
4. The integrated device according to claim 2 or 3, characterized in that, The integrated device (100) has a channel (101), part of which is located in the liquid storage assembly (1). The first part (31) includes a first sealing part (311) and a main body part (312). The first sealing part (311) and the main body part (312) are integrally formed, or the first sealing part (311) and the main body part (312) are fixedly connected or limitedly connected. The first sealing part (311) is sealed to the wall forming the channel (101).
5. The integrated device according to claim 4, characterized in that, The integrated device (100) includes a first plate (102) located between the liquid storage chamber (11) and the first flow channel (21), and a portion of the wall forming the channel (101) is located on the first plate (102). The oil return assembly (3) includes a first seal (33) sleeved on the first sealing part (311). The first sealing part (311) has a first groove (311a) opening toward the outer peripheral wall of the first sealing part (311). At least a portion of the first seal (33) is located in the first groove (311a), and the first seal (33) abuts against and seals the wall forming the channel (101). Alternatively, the oil return assembly (3) includes a first seal (33), which is fixedly connected or limitedly connected to the first sealing part (311). The first seal (33) is located at the end of the first sealing part (311) facing the liquid storage assembly (1), and the first seal (33) abuts against the end forming the channel (101) facing the flow channel plate (2) for sealing.
6. The integrated device according to claim 5, characterized in that, Define a first plane that is perpendicular to the thickness direction of the flow channel plate (2). Along the thickness direction of the flow channel plate (2), the projection of the wall of the channel (101) on the first plane at least partially coincides with the projection of the mounting port (221) on the first plane.
7. The integrated device according to any one of claims 2-6, characterized in that, The second part (32) includes a second sealing part (321) and a fixing part (322). The second sealing part (321) and the fixing part (322) are integrally formed. The mounting part (22) includes a first sidewall part (222) and a second sidewall part (223). The first sidewall part (222) is away from the liquid storage assembly (1) relative to the second sidewall part (223). The second sealing part (321) and the second sidewall part (223) are sealed together. The first sidewall part (222) has a thread and is threadedly connected to the fixing part (322).
8. The integrated device according to claim 7, characterized in that, The oil return assembly (3) includes a second seal (34), which is sleeved on the second sealing part (321). The second sealing part (321) has a second groove (321a) which opens toward the outer peripheral wall of the second sealing part (321). The fixing part (322) is away from the liquid storage assembly (1) relative to the second groove (321a). At least a portion of the second seal (34) is located in the second groove (321a). The second seal (34) abuts against the second side wall part (223) for sealing.
9. The integrated device according to any one of claims 1-8, characterized in that, The oil return assembly (3) includes a filter section (35), at least a portion of which is located in the liquid storage chamber (11). The filter section (35) is injection molded to the first part (31) of the oil return assembly (3), or the filter section (35) is fixedly connected or limitedly connected to the first part (31).
10. The integrated device according to any one of claims 1-8, characterized in that, The oil return assembly (3) includes a filter screen (351), which is fixedly connected or limited to the first part (31) of the oil return assembly, or the filter screen (351) and the first part (31) are an integral structure, and the filter screen (351) is located in the first flow channel (21).