Scroll assembly and scroll compressor
By setting grooves and steps in the scroll assembly of the scroll compressor, along with seals and elastic elements, the problem of insufficient scroll sealing is solved, achieving higher sealing performance and lower energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN MAIGU TECH CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-04
AI Technical Summary
In existing scroll compressors, manufacturing and assembly errors lead to insufficient sealing between the scroll plates, resulting in decreased compression performance and increased energy consumption.
A scroll assembly is designed, including a first scroll, a second scroll, a first seal, and a first elastic element. By setting grooves and steps on the scroll, and cooperating with the seal and elastic element, a closed volume cavity is formed to reduce gas leakage.
It improves the sealing performance of the scroll compressor, reduces gas leakage from the high-pressure side to the low-pressure side, and enhances the airtightness of the compressor.
Smart Images
Figure CN224592343U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of compressor technology, and in particular to a scroll assembly and a scroll compressor. Background Technology
[0002] With the development of modern technology, scroll compressors, as positive displacement air compressors designed based on the scroll meshing compression principle, have been widely used in industrial manufacturing, medical equipment, and automotive fields. However, due to manufacturing and assembly errors, the sealing between the scrolls in related technologies is insufficient, which may lead to problems such as decreased compression performance and increased energy consumption. Utility Model Content
[0003] This application aims to provide a scroll assembly and a scroll compressor to reduce the problem of gas leakage from the high-pressure side to the low-pressure side.
[0004] In a first aspect, this application proposes a scroll assembly, including a first scroll, a second scroll, a first seal, and a first elastic member. The first scroll includes a first disc body and a first scroll portion connected together. The first scroll portion has a first groove and a second groove connected together. The first groove is located on the end face of the first scroll portion away from the first disc body, and the second groove is located on the side of the first groove facing the first disc body. The first groove and the second groove extend along the scroll line of the first scroll portion, respectively. A first step is provided at one end of the first groove along its extension direction, located on the side of the first groove facing the second groove. The second scroll includes a second disc body and a second scroll portion connected together, and the second scroll portion engages with the first scroll portion. The first seal is disposed within the first groove and abuts against the first step and the second disc body. The first elastic member is disposed within the second groove and abuts against the first seal.
[0005] In the above technical solution, the first and second scrolls are configured to cooperate with each other, with the first and second scroll sections meshing. The first scroll moves relative to the second scroll, forming a closed volumetric cavity to compress air. A first groove is provided in the first scroll section, and a first seal is disposed therein. A second groove is provided below the first groove, and a first elastic element is disposed therein. This provides compensation for the axial clearance of the scroll assembly, effectively improving the sealing performance of the compressor and reducing leakage. In addition, a first step is provided at one end of the first groove extending in the direction of extension. During the meshing motion of the first and second scrolls, the cooperation of the first groove, the second groove, the first seal, the first elastic element, and the first step reduces air leakage from the high-pressure side to the low-pressure side, thereby improving the airtightness of the compressor.
[0006] In some embodiments, the first groove has a first step at each end along its extension direction, and the two ends of the first seal abut against the first steps at both ends of the first groove. A first step is also provided at the other end of the first groove. The first steps at both ends cooperate with the first seal to form a relatively closed space in the second groove, reducing gas leakage from the high-pressure side to the low-pressure side.
[0007] In some embodiments, the extension length of the first groove is greater than the extension length of the second groove along its extension direction. And / or, the first seal and the first elastic member extend along the spiral line of the first scroll, with the extension length of the first seal greater than the extension length of the first elastic member. The extension length of the first groove is greater than the extension length of the second groove, and the extension length of the first seal is greater than the extension length of the first elastic member, such that the first seal, in conjunction with the first step, enhances radial sealing and reduces gas leakage from the high-pressure side to the low-pressure side.
[0008] In some embodiments, along the extending direction of the first groove, one end of the first groove is provided with a first sidewall, and a gap is provided between the first sidewall and the first seal. Providing a gap between the first sidewall and the first seal, such that the length of the first seal is less than the length of the first groove, provides space for the first seal to be compressed and deformed, which is beneficial for the first seal to provide a sealing effect.
[0009] In some embodiments, the end face of the second scroll portion facing away from the second disc body is provided with a third groove. The scroll assembly also includes a second seal, which is disposed within the third groove and abuts against the first disc body. The third groove in the second scroll portion and the second seal within the third groove enhance the axial seal between the second scroll portion and the first disc body, thereby improving the sealing performance of the compressor.
[0010] In some embodiments, the scroll assembly further includes a second elastic element disposed in the second scroll portion and abutting against the side of the second seal opposite to the first disc body. Providing the second elastic element in the second scroll portion can compensate for the clearance in the scroll assembly caused by axial wear of the seal, effectively reducing the risk of compressor leakage.
[0011] In some embodiments, the second vortex portion further includes a fourth groove, which communicates with the third groove. The fourth groove is located on the side of the third groove facing the second disc, and the second elastic member is disposed within the fourth groove, abutting against the second seal. Providing the fourth groove on the side of the third groove facing the second disc, and placing the second elastic member within the fourth groove to abut against the second seal, not only improves the compactness of the second seal and the second elastic member, but also enhances the efficiency of the gap compensation function of the second elastic member against the second seal, thereby improving the working efficiency of the second elastic member.
[0012] In some embodiments, the third groove and the fourth groove extend along the vortex line of the second vortex portion, and a second step is provided at one end of the third groove along the extending direction. The second step is provided on the side of the third groove facing the fourth groove, and the side of the second seal opposite to the first disc abuts against the second step. By providing the second step on the side of the third groove facing the fourth groove and by providing the second seal on the second step, the sealing performance of the compressor is improved when air on the high-pressure side leaks to the low-pressure side.
[0013] In some embodiments, the first scroll further includes a first wear-resistant pad disposed on the side of the second disc body facing the first scroll, and the first wear-resistant pad abuts against the first seal. And / or, the second scroll further includes a second wear-resistant pad disposed on the side of the first disc body facing the second scroll, and the second wear-resistant pad abuts against the first disc body and the second scroll portion, respectively. The first and second wear-resistant pads can withstand frictional forces, reducing wear between the first and second seals and the scroll, and reducing the decrease in airtightness caused by wear of the first and second seals.
[0014] Secondly, this application provides a scroll compressor, including a scroll assembly as described in any embodiment of the first aspect. Additional aspects and advantages of the embodiments of this application will be described, shown, or illustrated in part by way of implementation of the embodiments of this application. Attached Figure Description
[0015] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are not intended to limit the embodiments, and elements having the same reference numerals in the drawings are designated as similar elements.
[0016] Figure 1 This is a structural diagram of the first vortex disk in some embodiments of this application; Figure 2 This is a structural diagram of the second vortex disk in some embodiments of this application; Figure 3 This is a partial structural cross-sectional view of the first vortex disk in some embodiments of this application; Figure 4 This is a partial structural cross-sectional view of the second vortex disk according to some embodiments of this application; Figure 5 This is a partial structural cross-sectional view of a scroll compressor according to some embodiments of this application; Figure 6 Some embodiments of this application Figure 5 Enlarged view of point A in the middle; Figure 7 Some embodiments of this application Figure 5 Enlarged view of point B in the middle.
[0017] Explanation of reference numerals in the attached drawings: 1. First vortex; 11. First disc body; 12. First vortex section; 121. First groove; 1211. First sidewall; 1212. Gap; 122. Second groove; 123. First step; 13. First wear-resistant pad; 2. Second vortex; 21. Second disc body; 22. Second vortex section; 221. Third groove; 222. Fourth groove; 223. Second step; 23. Second wear-resistant pad; 31. First elastic element; 32. Second elastic element; 41. First seal; 42. Second seal. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0019] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.
[0020] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0021] The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0022] In a first aspect, this application proposes a scroll assembly, including a first scroll 1, a second scroll 2, a first seal 41, and a first elastic member 31.
[0023] The first scroll plate 1 and the second scroll plate 2 are meshed with each other, and the first scroll plate 1 can perform translational motion relative to the second scroll plate 2. During the translational motion of the first scroll plate 1 relative to the second scroll plate 2, it needs to withstand the pressure load of compressed air, the friction load during meshing, and the heat of compression. To improve operation, the first scroll plate 1 and the second scroll plate 2 can be made of alloy materials. For the first scroll plate 1, aluminum alloy can be used, and weight-reducing grooves can be opened in the plate body to make the plate body lighter. For the second scroll plate 2, since the second scroll plate 2 is stationary, it is more prone to heat accumulation. Heat dissipation fins can be set in the plate body to reduce heat accumulation.
[0024] Regarding the first elastic element 31 and the first sealing element 41, the first elastic element 31 needs to compensate for the axial clearance variation of the scroll plate under all operating conditions, and typically requires sufficient effective deformation reserve. For example, a spring can have a compression margin. Furthermore, due to the cyclical and high-temperature working environment, the material of the first elastic element 31 needs to be selected as a material with high fatigue limit and heat resistance, such as stainless steel. For the first sealing element 41, it is usually interference-fitted with the plate body and requires a certain degree of elasticity and wear resistance. If it is made of metal, an elastic stainless steel sheet can be selected; if it is made of non-metallic materials, polytetrafluoroethylene composite material or fluororubber can be selected.
[0025] Specifically, please refer to Figure 1 The first volute 1 includes a first disk body 11 and a first volute portion 12 connected to each other. The first volute portion 12 has a first groove 121 and a second groove 122 that are connected to each other. The first groove 121 is located on the end face of the first volute portion 12 away from the first disk body 11, and the second groove 122 is located on the side of the first groove 121 facing the first disk body 11. The first groove 121 and the second groove 122 extend along the volute line of the first volute portion 12, respectively. A first step 123 is provided at one end of the first groove 121 along the extending direction, and the first step 123 is located on the side of the first groove 121 facing the second groove 122. Please refer to... Figure 2 The second scroll 2 includes a second disk body 21 and a second scroll portion 22 connected to each other, the second scroll portion 22 engaging with the first scroll portion 12. Please refer to... Figure 3 The first sealing element 41 is disposed in the first groove 121, and the first sealing element 41 abuts against the first step 123 and the second disc 21 respectively. The first elastic element 31 is disposed in the second groove 122, and the first elastic element 31 abuts against the first sealing element 41.
[0026] In the above technical solution, the first scroll 1 and the second scroll 2 are configured to cooperate with each other, and the first scroll portion 12 and the second scroll portion 22 mesh. The first scroll 1 translates relative to the second scroll 2, forming a closed volume cavity to compress air. A first groove 121 is provided in the first scroll portion 12, and a first seal 41 is provided therein. A second groove 122 is provided below the first groove 121, and a first elastic element 31 is provided therein. This can compensate for the axial clearance of the scroll assembly, effectively improving the sealing performance of the compressor and reducing leakage. In addition, a first step 123 is provided at one end of the first groove in the extending direction. During the meshing motion of the first scroll 1 and the second scroll 2, the cooperation of the first groove 121, the second groove 122, the first seal 41, the first elastic element 31, and the first step 123 reduces air leakage from the high-pressure side to the low-pressure side, thereby improving the airtightness of the compressor.
[0027] In some embodiments, please refer to Figure 1 and Figure 3 The first groove 121 has a first step 123 at each end along its extension direction, and the two ends of the first sealing member 41 abut against the first steps 123 at both ends of the first groove 121. A first step 123 is also provided at the other end of the first groove 121, which can simultaneously enhance the sealing performance at both ends of the first groove 121. Furthermore, the first steps 123 at both ends cooperate with the first sealing member 41 to form a relatively closed space in the second groove 122, reducing gas leakage from the high-pressure side to the low-pressure side.
[0028] In some embodiments, please refer to Figure 3 Along the extending direction of the first groove 121, the extension length of the first groove 121 is greater than the extension length of the second groove 122. And / or, the first seal 41 and the first elastic member 31 extend along the vortex line of the first volute 1, respectively, with the extension length of the first seal 41 being greater than the extension length of the first elastic member 31. The extension length of the first groove 121 is greater than the extension length of the second groove 122, and the extension length of the first seal 41 is greater than the extension length of the first elastic member 31, so that the first seal 41 cooperates with the first step 123 to enhance the radial sealing of the vortex portion and reduce gas leakage from the high-pressure side to the low-pressure side.
[0029] In some embodiments, please refer to Figure 1 and Figure 3 Along the extending direction of the first groove 121, one end of the first groove 121 is provided with a first sidewall 1211, and a gap 1212 is provided between the first sidewall 1211 and the first sealing member 41. The gap 1212 between the first sidewall 1211 and the first sealing member 41 makes the length of the first sealing member 41 less than the length of the first groove 121, which provides space for the first sealing member 41 to be squeezed and deformed, which is beneficial for the first sealing member 41 to provide a sealing function.
[0030] In some embodiments, please refer to Figure 2 and Figure 4 The second scroll portion 22 has a third groove 221 on its end face opposite to the second disc body 21. The scroll assembly also includes a second seal 42, which is disposed within the third groove 221 and abuts against the first disc body 11. The third groove 221 in the second scroll portion 22 and the second seal 42 within the third groove 221 enhance the axial seal between the second scroll portion 22 and the first disc body 11, thereby improving the sealing performance of the compressor.
[0031] In some embodiments, please refer to Figure 4 The scroll assembly also includes a second elastic element 32, which is disposed in the second scroll portion 22 and abuts against the side of the second seal 42 facing away from the first disc body 11. The second elastic element 32 in the second scroll portion 22 can compensate for the clearance in the scroll assembly caused by axial wear of the seal, effectively reducing the risk of compressor leakage.
[0032] In some embodiments, please refer to Figure 2 and Figure 4 The second vortex section 22 is also provided with a fourth groove 222, which communicates with the third groove 221. The fourth groove 222 is located on the side of the third groove 221 facing the second disc 21. The second elastic member 32 is located in the fourth groove 222 and abuts against the second sealing member 42. The fourth groove 222 is located on the side of the third groove 221 facing the second disc 21, and the second elastic member 32 is located in the fourth groove 222 and abuts against the second sealing member 42. This not only improves the compactness of the second sealing member 42 and the second elastic member 32, but also increases the efficiency of the gap compensation effect of the second elastic member 32 on the second sealing member 42, thus improving the working efficiency of the second elastic member 32.
[0033] In some embodiments, please refer to Figure 2 and Figure 4 The third groove 221 and the fourth groove 222 extend along the vortex line of the second vortex portion 22, respectively. A second step 223 is provided at one end of the third groove 221 along its extension direction. The second step 223 is located on the side of the third groove 221 facing the fourth groove 222. The side of the second seal 42 facing away from the first disc 11 abuts against the second step 223. With the second step 223 located on the side of the third groove 221 facing the fourth groove 222, when air leaks from the high-pressure side to the low-pressure side, the second step 223 can provide supplementary sealing. The cooperation between the second seal 42 and the second step 223 further improves the sealing performance of the compressor.
[0034] In some embodiments, please refer to Figures 5 to 7 The first scroll plate 1 further includes a first wear-resistant pad 13, which is disposed on the side of the second plate body 21 facing the first scroll plate 1 and abuts against the first seal 41. And / or, the second scroll plate 2 further includes a second wear-resistant pad 23, which is disposed on the side of the first plate body 11 facing the second scroll plate 2 and abuts against the first plate body 11 and the second scroll portion 22 respectively. The first wear-resistant pad 13 and the second wear-resistant pad 23 can withstand frictional forces, reducing wear between the first seal 41 and the second seal 42 and the scroll plate, and reducing the decrease in airtightness caused by wear of the first seal 41 and the second seal 42.
[0035] Secondly, this application provides a scroll compressor, including a scroll assembly as described in any embodiment of the first aspect.
[0036] In this application, the first scroll 1 and the second scroll 2 cooperate to perform eccentric motion, and the first scroll portion 12 and the second scroll portion 22 mesh to compress air. During compression, air on the high-pressure side may leak to the low-pressure side through the gap between the sealing strip and the elastic element. At this time, by designing the first step 123 and the second step 223, and utilizing the first sealing element 41 and the second sealing element 42 to cooperate with the first step 123 and the second step 223 to form a seal, the leakage of gas from the second groove 122 and the fourth groove 222 is reduced, and the sealing performance of the scroll compressor is more effectively improved.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A scroll set comprising: include: The first vortex disk includes a first disk body and a first vortex portion connected to each other. The first vortex portion is provided with a first groove and a second groove that are connected to each other. The first groove is provided on the end face of the first vortex portion away from the first disk body, and the second groove is provided on the side of the first groove facing the first disk body. The first groove and the second groove extend along the vortex line of the first vortex portion respectively. One end of the first groove along the extension direction is provided with a first step, and the first step is provided on the side of the first groove facing the second groove. The second scroll plate includes a second disk body and a second scroll portion connected together, and the second scroll portion meshes with the first scroll portion; A first sealing element is disposed within the first groove, and the first sealing element abuts against the first step and the second disc body respectively; A first elastic element is disposed within the second groove and abuts against the first sealing element.
2. The scroll set of claim 1, wherein, The first groove has a first step at each end along its extension direction, and the two ends of the first seal abut against the first steps at both ends of the first groove.
3. The scroll set of claim 1 wherein, Along the extending direction of the first groove, the extending length of the first groove is greater than the extending length of the second groove; and / or, The first sealing element and the first elastic element extend along the spiral line of the first volute, and the extension length of the first sealing element is greater than the extension length of the first elastic element.
4. The scroll assembly according to claim 1, characterized in that, Along the extending direction of the first groove, one end of the first groove is provided with a first sidewall, and a gap is provided between the first sidewall and the first seal.
5. The scroll plate assembly according to any one of claims 1-4, characterized in that, The second vortex section has a third groove on the end face opposite to the second disk body; The scroll assembly further includes a second seal, which is disposed in the third groove and abuts against the first disk body.
6. The scroll assembly according to claim 5, characterized in that, The scroll assembly further includes a second elastic element, which is disposed on the second scroll portion and abuts against the side of the second seal that is away from the first disk body.
7. The scroll assembly according to claim 6, characterized in that, The second vortex portion is further provided with a fourth groove, which communicates with the third groove. The fourth groove is located on the side of the third groove facing the second disc body. The second elastic member is located in the fourth groove and abuts against the second sealing member.
8. The scroll assembly according to claim 7, characterized in that, The third groove and the fourth groove extend along the vortex line of the second vortex portion, and a second step is provided at one end of the third groove along the extension direction. The second step is provided on the side of the third groove facing the fourth groove, and the side of the second seal member away from the first disc body abuts against the second step.
9. The scroll plate assembly according to any one of claims 1-4, characterized in that, The first scroll plate further includes a first wear-resistant pad, which is disposed on the side of the second disk body facing the first scroll plate, and the first wear-resistant pad abuts against the first seal; and / or, The second scroll also includes a second wear-resistant pad, which is disposed on the side of the first disk body facing the second scroll, and the second wear-resistant pad abuts against the first disk body and the second scroll portion respectively.
10. A scroll compressor, characterized in that, Includes the scroll assembly as described in any one of claims 1-9.