Compression assembly and static scroll, scroll compressor

Abstract

The application discloses a compression assembly and a static scroll and a scroll compressor. The compression assembly comprises a static scroll, a base body and a static disc profile, the base body is provided with a mounting groove, and the static disc profile is located in the mounting groove; the end face of the base body around the opening of the mounting groove is a thrust face, the thrust face comprises a first friction area and a second friction area, the second friction area is located on the radial outer side of the first friction area, the first friction area is provided with an annular first oil groove, and the second friction area is provided with an oil groove network, the oil groove network comprises an annular second oil groove and a third oil groove communicated with the second oil groove; and a dynamic scroll is arranged on one side of the static scroll and in contact with the thrust face, the dynamic scroll is provided with an oil feeding hole opening towards the thrust face, and the oil feeding hole is intermittently communicated with the first oil groove. The compression assembly has the advantages of lubricating the thrust face on the static scroll from different positions, improving the lubricating efficiency of the thrust face, meeting the lubricating requirements of high-speed compressors and the like.

Description

Technical Field

[0001] This invention relates to the field of compressors, and more specifically, to a compression assembly and a static scroll compressor. Background Technology

[0002] In related technologies, the oil supply method for the thrust surfaces of the moving and stationary discs is suitable for compressor structures with low speed and small displacement. In compressor structures with small displacement, the eccentricity of the moving disc is small, and the distance between the edge of the moving disc and the oil groove of the stationary disc is short. The oil in the oil groove of the stationary disc can flow to any position area of ​​the thrust surface as the moving disc rotates. However, with the development of frequency conversion technology and the further expansion of compressor application fields, the speed requirements are getting higher and higher, and the displacement requirements are larger. The traditional oil supply lubrication method for the thrust surfaces of the moving and stationary discs can no longer meet the reliability requirements of compressor operation. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a compression assembly that has the advantages of lubricating the thrust surface on the stationary scroll from different positions, improving the lubrication efficiency of the thrust surface, and meeting the lubrication requirements of high-speed compressors.

[0004] The present invention also proposes a stationary scroll plate having the compression assembly and a scroll compressor having the compression assembly.

[0005] According to an embodiment of a first aspect of the present invention, a compression assembly is provided, the compression assembly comprising: a stationary scroll plate, the stationary scroll plate comprising a base and a stationary scroll plate profile, the base having a mounting groove, the stationary scroll plate profile being located within the mounting groove; an end face of the base plate surrounding the opening of the mounting groove being a thrust surface, the thrust surface comprising a first friction region and a second friction region, the second friction region being located radially outside the first friction region, the first friction region having an annular first oil groove, the second friction region having an oil groove network, the oil groove network comprising an annular second oil groove and a third oil groove communicating therewith, the oil groove network dividing the second friction region into multiple independent sub-regions; a moving scroll plate, the moving scroll plate being disposed on one side of the stationary scroll plate and in contact with the thrust surface, the moving scroll plate having an upper oil hole opening toward the thrust surface, the upper oil hole being intermittently communicating with the first oil groove, the moving scroll plate having a through hole communicating with the second oil groove, the through hole being adapted to communicate with a back pressure chamber; the back pressure chamber being adapted to be located on one side of the moving scroll plate to apply a force toward the thrust surface to the moving scroll plate.

[0006] The compression assembly according to embodiments of the present invention has advantages such as lubricating the thrust surface on the stationary scroll from different positions, improving the lubrication efficiency of the thrust surface, and meeting the lubrication requirements of high-speed compressors.

[0007] In addition, the compression component according to the above embodiments of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the outer diameter of the first friction region is 1.03-1.08 times the outer diameter of the moving scroll.

[0009] According to some embodiments of the present invention, the oil trough network further includes an annular fourth oil trough, the fourth oil trough being located radially outside the second oil trough, and the fourth oil trough and the second oil trough being connected through the third oil trough.

[0010] In some embodiments, the radial width of the sub-region is L, the operating eccentricity of the moving vortex is δ, where L≤1.5*δ; and / or the circumferential angle θ of the sub-region is ≤90°.

[0011] According to some embodiments of the present invention, the radial width m of the second oil groove is ≥ 0.8 mm.

[0012] According to some embodiments of the present invention, the first oil tank is provided with an oil inlet area, the oil inlet area is intermittently connected with the oil outlet, and the radial width of the oil inlet area is greater than the radial width of the rest of the first oil tank.

[0013] In some embodiments, the inner wall of the oil inlet area is recessed inward relative to the inner wall of the remaining portion of the first oil tank.

[0014] According to some embodiments of the present invention, a fifth oil groove is provided in the first friction area, and the fifth oil groove is in communication with the second oil groove.

[0015] In some embodiments, the fifth oil tank is radially aligned with the oil inlet area of ​​the first oil tank.

[0016] According to an embodiment of a second aspect of the present invention, a stationary scroll plate having the compression assembly is provided. The stationary scroll plate includes a base and a stationary plate profile. The base is provided with a mounting groove, and the stationary plate profile is located within the mounting groove. An end face of the base surrounding the opening of the mounting groove is a thrust surface. The thrust surface includes a first friction region and a second friction region. The second friction region is located radially outside the first friction region. The first friction region is provided with an annular first oil groove. The second friction region is provided with an oil groove network. The oil groove network includes an annular second oil groove and a third oil groove communicating with it. The oil groove network divides the second friction region into multiple independent sub-regions.

[0017] In some embodiments, the oil trough network further includes an annular fourth oil trough, the fourth oil trough being located radially outside the second oil trough, and the fourth oil trough and the second oil trough being connected through the third oil trough.

[0018] According to an embodiment of a third aspect of the present invention, a scroll compressor having the compression assembly described in the first aspect of the present invention is provided.

[0019] In some embodiments, the scroll compressor includes a stationary scroll disc as described in an embodiment of the second aspect of the invention.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a cross-sectional view of a scroll compressor according to an embodiment of the present invention.

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 This is an explanatory diagram of the friction region in the stationary vortex disk according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the stationary vortex disk according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the stationary vortex disk according to an embodiment of the present invention.

[0027] Figure 6 This is a cross-sectional view of the moving scroll plate according to an embodiment of the present invention.

[0028] Reference numerals: Scroll compressor 1, Compression assembly 10

[0029] Static volute 100, base 110, thrust surface 111, static volute profile 120.

[0030] First friction zone 200, first lubrication zone 201, second lubrication zone 202, first oil groove 210, oil inlet zone 220, fifth oil groove 230

[0031] Second friction region 300, oil groove network 310, second oil groove 312, third oil groove 313, radial oil groove 313a, fourth oil groove 314, sub-region 320.

[0032] Moving scroll 400, oil inlet 410, assembly slot 420, scroll gear 430, oil passage 440.

[0033] Back pressure chamber 51, oil sump 52, upper oil plate 53, crankshaft 54, oil hole sealing screw 55

[0034] Oiling channel 60, horizontal oiling channel 61, vertical oiling channel 62. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The compression assembly 10 of the scroll compressor 1 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0037] like Figures 1-6 As shown, the compression assembly 10 according to an embodiment of the present invention includes a stationary scroll plate 100 and a moving scroll plate 400.

[0038] The stationary scroll 100 includes a base 110 and a stationary scroll profile 120. The base 110 is provided with a mounting groove, and the stationary scroll profile 120 is located in the mounting groove. The stationary scroll profile 120 cooperates with the moving scroll 400 so that the moving scroll 400 can cooperate with the stationary scroll profile 120 to compress air together when rotating.

[0039] The end face of the substrate 110 surrounding the opening of the mounting groove is a thrust surface 111. The thrust surface 111 includes a first friction region 200, and the first friction region 200 is provided with an annular first oil groove 210. It should be noted that "annular" in this application refers to the first oil groove 210 extending in a circular shape in the circumferential direction, rather than specifically limiting the first oil groove 210 to a circular shape. As long as the first oil groove 210 can extend in the circumferential direction to present a circular shape, the first oil groove 210 can be any shape such as circular, square, or elliptical.

[0040] A moving scroll 400 is located on one side of the stationary scroll 100 and contacts the thrust surface 111. The moving scroll 400 has an oil inlet 410 that opens towards the thrust surface 111. The oil inlet 410 is intermittently connected to the first oil groove 210. When the oil inlet 410 is connected to the first oil groove 210, lubricating oil can enter the first oil groove 210 through the oil inlet 410. When the moving scroll 400 rotates, it can carry the lubricating oil in the first oil groove 210 to the remaining areas of the first friction area 200 to lubricate the first friction area 200.

[0041] Specifically, the moving scroll 400 can rotate relative to the base 110. When the moving scroll 400 rotates to a certain position, the first oil groove 210 is connected to the upper oil hole 410. At this time, lubricating oil can enter the first oil groove 210 from the upper oil hole 410 to lubricate the first friction area 200, reduce the friction coefficient between the moving scroll 400 and the first friction area 200, and thus ensure that the moving scroll 400 can rotate smoothly.

[0042] The thrust surface 111 also includes a second friction region 300, which is located radially outside the first friction region 200. The second friction region 300 is provided with an oil groove network 310, which includes an annular second oil groove 312 and a third oil groove 313. The third oil groove 313 is connected to the second oil groove 312. The oil groove network 310 divides the second friction region 300 into multiple independent sub-regions 320.

[0043] The moving scroll 400 is provided with a through hole communicating with the second oil groove 312. The through hole is adapted to communicate with the back pressure chamber 51. The lubricating oil in the back pressure chamber 51 can flow from the through hole into the second oil groove 312. Since the second oil groove 312 is connected to the third oil groove 313, the lubricating oil in the second oil groove 312 can also flow into the third oil groove 313, thereby increasing the area where the lubricating oil can flow in the second friction region 300. Furthermore, when the moving scroll 400 rotates, it can carry the lubricating oil from the second oil groove 312 and the third oil groove 313 to the remaining areas of the second friction region 300 to lubricate the second friction region 300.

[0044] In some embodiments, the through hole always connects the back pressure chamber 51 and the second oil groove 312, so that the lubricating oil in the back pressure chamber 51 can reach the second oil groove 312 along the through hole at any time, so as to achieve lubrication of the second friction area 300, which helps to reduce the friction coefficient between the moving scroll 400 and the second friction area 300, thereby ensuring that the moving scroll 400 can rotate smoothly.

[0045] The back pressure chamber 51 is adapted to be located on one side of the moving scroll 400 to apply a force toward the thrust surface 111 to the moving scroll 400, so that the moving scroll 400 and the thrust surface 111 are always in a pressed state, ensuring the sealing of the inside of the compression assembly 10, ensuring the fit between the moving scroll 400 and the stationary disk profile 120, so that the moving scroll 400 can fit with the stationary disk profile 120 when rotating to compress air.

[0046] In some embodiments, the moving scroll 400 and the stationary scroll profile 120 define a compression chamber. When the moving scroll 400 rotates, it compresses the air in the compression chamber, enabling the scroll compressor 1 to discharge high-pressure gas. The compression chamber is connected to the back pressure chamber 51, meaning that the back pressure chamber 51 contains high-pressure gas. This high-pressure gas exerts a force on the moving scroll 400 toward the thrust surface 111, ensuring that the moving scroll 400 and the thrust surface 111 are always pressed together, thus guaranteeing the sealing of the compression chamber.

[0047] In summary, by setting a first friction region 200 and a second friction region 300 on the thrust surface 111, the lubrication problem of a large area is divided into lubrication of local small areas. A first oil groove 210 is set in the first friction region 200, and a second oil groove 312 and a third oil groove 313 are set in the second friction region 300. Lubricating oil can enter the first friction region 200 from the first oil groove 210 to achieve lubrication of the first friction region 200, and lubricating oil can enter the second friction region 300 from the second oil groove 312 to achieve lubrication of the second friction region 300.

[0048] By lubricating the thrust surface 111 from different locations, the resistance of the oil-bearing rotating scroll 400 can be reduced, and sufficient lubrication of the entire area of ​​the thrust surface 111 can be achieved. Even when the compression assembly 10 is in a relatively harsh working environment and the friction and PV value between the thrust surfaces 111 of the rotating scroll 400 and the stationary scroll 100 are relatively severe, sufficient lubrication of the thrust surface 111 can still be achieved, avoiding abnormal wear of the rotating scroll 400 and the stationary scroll 100, and avoiding serious wear on the entire thrust surface 111.

[0049] Therefore, the compression assembly 10 according to the present invention has advantages such as lubricating the thrust surface 111 on the stationary scroll 100 from different positions, improving the lubrication efficiency of the thrust surface 111, and meeting the lubrication requirements of high-speed compressors.

[0050] The compression component 10 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0051] like Figures 1-6 As shown, the compression assembly 10 according to an embodiment of the present invention includes a stationary scroll plate 100 and a moving scroll plate 400.

[0052] In some embodiments of the present invention, the moving scroll 400 is provided with scroll teeth 430, which are formed in a spiral structure. The stationary disk profile 120 on the stationary scroll 100 is also formed in a spiral structure. The scroll teeth 430 and the stationary disk profile 120 mesh with each other to form a crescent-shaped compression cavity. When the moving scroll 400 rotates eccentrically, the volume of the crescent-shaped compression cavity changes continuously and periodically, thereby forming a complete intake, compression and exhaust process.

[0053] In some embodiments, the moving scroll 400 and the stationary scroll 100 are made of metal to ensure the strength of the moving scroll 400 and the stationary scroll 100, and to ensure that the compression assembly 10 can compress the air smoothly and form high-pressure air.

[0054] In some embodiments of the present invention, the outer diameter of the first friction region 200 is 1.03-1.08 times the outer diameter of the moving scroll 400.

[0055] In some embodiments, the moving scroll 400 can rotate eccentrically relative to the stationary disk profile 120 of the stationary scroll 100, and the outer diameter of the first friction region 200 is set to 1.03-1.08 times the outer diameter of the moving scroll 400. This facilitates the moving scroll 400 to carry the lubricating oil at the first oil groove 210 to each area of ​​the first friction region 200 when the moving scroll 400 rotates, thereby achieving sufficient lubrication of the first friction region 200.

[0056] In some embodiments of the present invention, the oil groove network 310 further includes an annular fourth oil groove 314, which is located radially outside the second oil groove 312. The fourth oil groove 314 and the second oil groove 312 are connected through a third oil groove 313. The fourth oil groove 314 is provided to increase the flow area of ​​lubricating oil in the second friction area 300, thereby facilitating sufficient lubrication of the second friction area 300.

[0057] In some embodiments, such as Figure 5 As shown, the second oil groove 312 and the fourth oil groove 314 are formed into annular oil grooves. The third oil groove 313 includes multiple radial oil grooves 313a. Each radial oil groove 313a can connect the second oil groove 312 and the fourth oil groove 314, so that the lubricating oil in the second oil groove 312 can flow along the radial oil groove 313a to the fourth oil groove 314, thereby increasing the area where the lubricating oil can flow. This allows the rotating scroll 400 to fully carry the lubricating oil to each area of ​​the second friction area 300 when it rotates, thereby achieving sufficient lubrication of the second friction area 300.

[0058] In some embodiments of the present invention, the radial width of the sub-region 320 is L, and the running eccentricity of the moving scroll 400 is δ, wherein L≤1.5*δ. A second oil groove 312 is provided between the sub-region 320 and the back pressure cavity 51. The radial width of the sub-region 320 is set to L≤1.5*δ. When the moving scroll 400 rotates, the moving scroll 400 can carry the lubricating oil at the second oil groove 312 to the sub-region 320, and then carry the lubricating oil at the second oil groove 312 to each area of ​​the second friction area 300, thereby achieving sufficient lubrication of the second friction area 300.

[0059] In some embodiments of the present invention, the circumferential angle θ of the sub-region 320 is ≤90°, so that the sub-region 320 is divided into an arc shape. When the moving volute 400 rotates, it can carry the lubricating oil in the second oil groove 312 to the sub-region 320, and then carry the lubricating oil in the second oil groove 312 to each area of ​​the second friction area 300, so as to achieve sufficient lubrication of the second friction area 300.

[0060] In some embodiments, such as Figure 5 As shown, the oil groove network 310 divides the second friction region 300 into 6 independent sub-regions 320. The circumferential angle θ of each independent sub-region 320 is ≤90° to form an arc-shaped sub-region 320. In the circumferential direction of the second friction region 300, there is a third oil groove 313 between two adjacent sub-regions 320, a second oil groove 312 is located inside the sub-region 320, and a fourth oil groove 314 is located outside the sub-region 320.

[0061] The lubricating oil in the back pressure chamber 51 can flow from the second oil groove 312 along the third oil groove 313 to the fourth oil groove 314, so as to fully increase the flow area of ​​the lubricating oil on the second friction area 300. When the moving scroll 400 rotates, the moving scroll 400 can fully carry the lubricating oil in the second oil groove 312, the third oil groove 313 and the fourth oil groove 314 to the sub-area 320, so as to fully lubricate the sub-area 320, and thus fully lubricate the second friction area 300.

[0062] In some embodiments of the present invention, the radial width m of the second oil groove 312 is ≥0.8mm, so as to ensure that the oil in the back pressure chamber 51 can flow into the second oil groove 312 when the moving scroll 400 rotates.

[0063] In some embodiments of the present invention, the first oil groove 210 is provided with an oil inlet area 220, which is intermittently connected to the upper oil hole 410. Lubricating oil at the upper oil hole 410 can enter the first oil groove 210 from the oil inlet area 220 to lubricate the first friction area 200. The radial width of the oil inlet area 220 is greater than the radial width of the rest of the first oil groove 210 to increase the communication time between the upper oil hole 410 and the oil inlet area 220, thereby increasing the oil supply.

[0064] Specifically, when the moving scroll 400 rotates, the oil inlet 410 rotates with the moving scroll 400. When the oil inlet 410 rotates to the position corresponding to the oil inlet area 220, the oil inlet 410 connects with the oil inlet area 220. At this time, lubricating oil can enter the oil inlet area 220 from the oil inlet 410 and flow into the first oil groove 210 from the oil inlet area 220.

[0065] By setting a larger radial width for the oil inlet area 220, the oil inlet area 220 can continuously circulate with the upper oil hole 410 when the moving scroll 400 rotates within a certain range. This allows lubricating oil to continuously enter the first oil groove 210 from the upper oil hole 410, increasing the oil supply to the first oil groove 210 and facilitating sufficient lubrication of the first friction area 200.

[0066] In some optional embodiments of the present invention, the inner wall of the oil inlet area 220 is recessed inward relative to the inner wall of the remaining part of the first oil groove 210 to increase the radial width of the oil inlet area 220. On the one hand, this allows the lubricating oil at the upper oil hole 410 to flow smoothly into the oil inlet area 220. On the other hand, it facilitates increasing the communication time between the oil inlet area 220 and the upper oil hole 410, thereby increasing the oil supply to the oil inlet area 220 and achieving sufficient lubrication of the first friction area 200.

[0067] In some optional embodiments of the present invention, a fifth oil groove 230 is provided in the first friction area 200, and the fifth oil groove 230 is connected to the second oil groove 312 so that the lubricating oil can flow between the second oil groove 312 and the fifth oil groove 230, thereby increasing the area on which the lubricating oil can flow on the thrust surface 111 and facilitating sufficient lubrication of the thrust surface 111.

[0068] In some optional embodiments of the present invention, the fifth oil groove 230 and the oil inlet area 220 of the first oil groove 210 are arranged radially opposite each other, so that when the oil inlet area 220 on the first oil groove 210 is connected to the oil inlet hole 410 on the moving scroll 400, the fifth oil groove 230 is connected to the oil inlet hole 410. At this time, lubricating oil can enter the fifth oil groove 230 through the oil inlet hole 410 and flow from the fifth oil groove 230 to the second oil groove 312 to supply oil to the second friction area 300.

[0069] Furthermore, since the fifth oil groove 230 is connected to the second oil groove 312, the lubricating oil in the fifth oil groove 230 flows into the second oil groove 312. The second oil groove 312 is connected to the fourth oil groove 314 through the third oil groove 313. That is to say, when the upper oil hole 410 is connected to the fifth oil groove 230, the lubricating oil can flow through the upper oil hole 410 into the fifth oil groove 230, and from the fifth oil groove 230 to the second oil groove 312, the third oil groove 313 and the fourth oil groove 314, so as to increase the flow area of ​​the lubricating oil in the second friction area 300, so that the moving scroll 400 can fully drive the lubricating oil to lubricate the second friction area 300 when rotating.

[0070] In addition, when the lubricating oil flows to the second oil groove 312, since the second oil groove 312 is connected to the back pressure chamber 51 through the through hole, the lubricating oil in the second oil groove 312 can flow into the back pressure chamber 51 through the through hole to replenish the lubricating oil in the back pressure chamber 51.

[0071] like Figure 3 In this embodiment, the thrust surface 111 of the stationary vortex disk 100 is provided with a first friction region 200 and a second friction region 300. The first friction region 200 and the second friction region 300 form an annular region, and the second friction region 300 is located outside the first friction region 200.

[0072] Figure 4 As shown, the first friction region 200 includes a first lubrication region 201 and a second lubrication region 202. The second lubrication region 202 is located outside the first lubrication region 201. A first oil groove 210 is defined between the first lubrication region 201 and the second lubrication region 202. Lubricating oil can enter the first friction region 200 from the first oil groove 210. When the moving scroll 400 rotates, the moving scroll 400 can drive the lubricating oil in the first oil groove 210 to lubricate the first lubrication region 201 and the second lubrication region 202, so as to achieve lubrication of the first friction region 200.

[0073] like Figure 4 As shown, a portion of the first lubrication zone 201 is recessed towards the stationary disc profile 120 to form an oil inlet area 220. The oil inlet area 220 is connected to the first oil groove 210. When the moving scroll 400 rotates, the oil inlet area 220 is intermittently connected to the upper oil hole 410 of the moving scroll 400, so that lubricating oil can enter the oil inlet area 220 through the upper oil hole 410 and flow from the oil inlet area 220 to the first oil groove 210.

[0074] A fifth oil groove 230 is provided in the second lubrication zone 202 at the position corresponding to the oil inlet zone 220. The fifth oil groove 230 is recessed in the direction close to the stationary disc profile 120, which is the same as the recessed direction of the oil inlet zone 220. When the oil inlet zone 220 is connected to the upper oil hole 410, the fifth oil groove 230 is connected to the upper oil hole 410, and lubricating oil can enter the fifth oil groove 230 from the upper oil hole 410.

[0075] like Figure 5 As shown, the second friction region 300 includes an oil groove network 310 and a pair of sub-regions 320 divided by the oil groove network 310. The oil groove network 310 includes a second oil groove 312, a third oil groove 313 and a fourth oil groove 314. The second oil groove 312 and the fourth oil groove 314 form an annular oil groove. The third oil groove 313 includes a plurality of radial oil grooves 313a. Each radial oil groove 313a can connect the second oil groove 312 and the fourth oil groove 314. The second oil groove 312 is located outside the second lubrication region 202 and is connected to the fifth oil groove 230.

[0076] When the fifth oil groove 230 is connected to the upper oil hole 410, the lubricating oil can enter the second oil groove 312 from the fifth oil groove 230, and then flow to the third oil groove 313 and the fourth oil groove 314. When the moving scroll 400 rotates, it can drive the lubricating oil to lubricate multiple sub-regions 320.

[0077] The static scroll plate 100 according to an embodiment of the present invention is described below. The static scroll plate 100 according to an embodiment of the present invention includes a base 110 and a static scroll plate profile 120. The base 110 is provided with a mounting groove, and the static scroll plate profile 120 is located in the mounting groove to achieve positioning of the static scroll plate profile 120 and mounting the static scroll plate profile 120 on the base 110.

[0078] The end face of the base 110 surrounding the opening of the mounting groove is a thrust surface 111. The thrust surface 111 includes a first friction region 200. The first friction region 200 is provided with an annular first oil groove 210. Lubricating oil can enter the first friction region 200 from the first oil groove 210 to achieve lubrication of the first friction region 200.

[0079] The thrust surface 111 also includes a second friction region 300, which is located radially outside the first friction region 200. The second friction region 300 is provided with an oil groove network 310, which includes an annular second oil groove 312 and a third oil groove 313. The third oil groove 313 is connected to the second oil groove 312, and lubricating oil can flow in the second oil groove 312 and the third oil groove 313.

[0080] The oil groove network 310 divides the second friction area 300 into multiple independent sub-areas 320, thereby dividing the larger lubrication area into smaller lubrication areas, which facilitates sufficient lubrication of the second friction area 300.

[0081] In some optional embodiments of the present invention, the oil groove network 310 further includes an annular fourth oil groove 314, which is located radially outside the second oil groove 312. The fourth oil groove 314 and the second oil groove 312 are connected through a third oil groove 313. The fourth oil groove 314 is provided to increase the flow range of lubricating oil in the second friction area 300, so as to facilitate the lubrication of the second friction area 300.

[0082] In some embodiments, such as Figure 5As shown, the second oil groove 312 and the fourth oil groove 314 are formed into annular oil grooves. The third oil groove 313 includes a plurality of radial oil grooves 313a. Each radial oil groove 313a can connect the second oil groove 312 and the fourth oil groove 314, so that the lubricating oil in the second oil groove 312 can flow along the radial oil groove 313a to the fourth oil groove 314, thereby increasing the area of ​​lubricating oil circulation in the second friction region 300, so that the moving scroll 400 can fully carry the lubricating oil to each area of ​​the second friction region 300 when rotating.

[0083] The scroll compressor 1 according to an embodiment of the present invention is described below.

[0084] In some embodiments of the present invention, the scroll compressor 1 according to the present invention includes the compression assembly 10 according to the above embodiments of the present invention.

[0085] In some embodiments, such as Figure 1 As shown, the compression assembly 10 is located on one side of the scroll compressor 1, and the other side of the scroll compressor 1 is provided with an oil sump 52 for storing lubricating oil. The scroll compressor 1 is also provided with a crankshaft 54, an upper oil plate 53, and an oil supply channel 60. The oil supply channel 60 extends from the crankshaft 54 ​​into the moving scroll 400. One end of the oil supply channel 60 is connected to the oil sump 52, and the other end is connected to the oil supply hole 410. The upper oil plate 53 is located in the oil supply channel 60. When the crankshaft 54 ​​rotates, it can drive the upper oil plate 53 located in the oil supply channel 60 to rotate. At this time, the rotation of the upper oil plate 53 generates suction to transport the lubricating oil in the oil sump 52 to the oil supply channel 60. The lubricating oil entering the oil supply channel 60 can enter the first oil groove 210 and the fifth oil groove 230 through the oil supply hole 410.

[0086] like Figure 1 , Figure 6 As shown, in this embodiment, the moving scroll 400 is provided with an assembly groove 420 on the side facing the crankshaft 51. One end of the crankshaft 54 ​​extends into the assembly groove 420 to connect the crankshaft 54 ​​and the moving scroll 400. When the crankshaft 54 ​​rotates, it can drive the moving scroll 400 to rotate eccentrically to compress the air. During the rotation, the moving scroll 400 can drive the lubricating oil in the first oil groove 210 and the fifth oil groove 230 to lubricate the first friction area 200, and drive the lubricating oil in the second oil groove 312, the third oil groove 313 and the fourth oil groove 314 to lubricate the second friction area 300.

[0087] In some alternative embodiments, such as Figure 2As shown, the oil supply channel 60 includes a transverse oil supply channel 61 and a vertical oil supply channel 62. The vertical oil supply channel 62 is located on one side of the crankshaft 54, that is, below the top wall of the assembly groove 420. The transverse oil supply channel 61 is located on the moving scroll 400. An oil passage hole 440 is provided on the top wall of the assembly groove 420, which connects the vertical oil supply channel 62 and the transverse oil supply channel 61.

[0088] The upper oil plate 53 is located in the vertical oil channel 62. The horizontal oil channel 61 connects the upper oil hole 410 and the oil passage hole 440. The lubricating oil in the oil sump 52 enters the vertical oil channel 62 under the suction force generated by the upper oil plate 53, flows into the horizontal oil channel 61 from the oil passage hole 440, flows from the horizontal oil channel 61 to the upper oil hole 410, and flows through the upper oil hole 410 to the first oil groove 210 and the fifth oil groove 230.

[0089] Among them, an oil hole sealing screw 55 is installed on the side of the transverse oil channel 61 away from the vertical oil channel 62. The oil hole sealing screw 55 can seal the lubricating oil in the transverse oil channel 61.

[0090] Specifically, in order to machine a transverse oil supply channel 61 in the moving scroll 400, the moving scroll 400 can be machined on one side to form a transverse oil supply channel 61. At this time, this side of the transverse oil supply channel 61 has an opening, which is connected to the transverse oil supply channel 61. An oil hole sealing screw 55 is set at the opening to seal the transverse oil supply channel 61 to a certain extent and prevent the lubricating oil in the transverse oil supply channel 61 from leaking out from the opening.

[0091] Furthermore, the oil hole sealing screw 55 can guide the lubricating oil in the transverse oil channel 61 toward the upper oil hole 410, allowing the lubricating oil to enter the thrust surface 111 from the upper oil hole 410. The outer diameter of the oil hole sealing screw 55 is smaller than the size of the transverse oil channel 61, which facilitates the installation of the oil hole sealing screw 55 in the transverse oil channel 61.

[0092] The scroll compressor 1 according to an embodiment of the present invention, by utilizing the compression assembly 10 according to the above embodiment of the present invention, has advantages such as lubricating the thrust surface 111 on the stationary scroll 100 from different positions, improving the lubrication efficiency of the thrust surface 111, and meeting the lubrication requirements of high-speed compressors.

[0093] In some other embodiments of the present invention, the scroll compressor 1 according to the present invention includes a stationary scroll 100 according to the above embodiments of the present invention. A first friction region 200 and a second friction region 300 are provided on the thrust surface 111 of the stationary scroll 100. A first oil groove 210 is provided in the first friction region 200, and the lubricating oil in the first oil groove 210 is used to lubricate the first friction region 200.

[0094] The second friction region 300 is divided into multiple independent sub-regions 320 by the oil groove network 310. A second oil groove 312 and a third oil groove 313 are provided in the second friction region 300, and the lubricating oil in the second oil groove 312 and the third oil groove 313 is used to lubricate the second friction region 300.

[0095] Specifically, by dividing the large-scale lubrication problem into local small-area lubrication and lubricating the thrust surface 111 from different locations, on the one hand, the resistance of the oil-bearing moving scroll 400 during operation can be reduced, and on the other hand, lubrication of the entire area of ​​the thrust surface 111 can be achieved. This can improve the lubrication efficiency of the lubricating oil on the thrust surface 111, meet the lubrication requirements of the high-speed compressor, and ensure the operational reliability of the scroll compressor 1.

[0096] Other configurations and operations according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0097] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0098] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0099] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compression assembly for a scroll compressor, characterized in that, include: A stationary scroll plate, comprising a base and a stationary scroll profile, wherein the base is provided with a mounting groove and the stationary scroll profile is located within the mounting groove; The end face of the substrate surrounding the opening of the mounting groove is a thrust surface. The thrust surface includes a first friction area and a second friction area. The second friction area is located radially outside the first friction area. The first friction area is provided with an annular first oil groove. The second friction area is provided with an oil groove network. The oil groove network includes an annular second oil groove and a third oil groove connected thereto. The oil groove network divides the second friction area into multiple independent sub-regions. The radial width of the sub-region is L. The running eccentricity of the moving scroll is δ, where L≤1.5*δ. A moving scroll plate is disposed on one side of the stationary scroll plate and in contact with the thrust surface. The moving scroll plate has an oil inlet hole that opens toward the thrust surface. The oil inlet hole is intermittently connected to the first oil groove. The moving scroll plate has a through hole that communicates with the second oil groove. The through hole is adapted to maintain communication with the back pressure chamber so as to continuously supply oil from the back pressure chamber to the second oil groove. The back pressure chamber is adapted to be located on one side of the moving scroll to apply a force toward the thrust surface to the moving scroll.

2. The compression assembly of the scroll compressor according to claim 1, characterized in that, The outer diameter of the first friction region is 1.03-1.08 times the outer diameter of the moving scroll.

3. The compression assembly of the scroll compressor according to claim 1, characterized in that, The oil tank network also includes a fourth annular oil tank, which is located radially outside the second oil tank, and the fourth oil tank and the second oil tank are connected through the third oil tank.

4. The compression assembly of the scroll compressor according to claim 3, characterized in that, The circumferential angle θ of the sub-region is ≤90°.

5. The compression assembly of the scroll compressor according to claim 1, characterized in that, The radial width m of the second oil groove is ≥ 0.8 mm.

6. The compression assembly of the scroll compressor according to claim 1, characterized in that, The first oil tank has an oil inlet area, which is intermittently connected to the oil inlet hole. The radial width of the oil inlet area is greater than the radial width of the rest of the first oil tank.

7. The compression assembly of the scroll compressor according to claim 6, characterized in that, The inner wall of the oil inlet area is recessed inward relative to the inner wall of the rest of the first oil tank.

8. The compression assembly of the scroll compressor according to any one of claims 1-7, characterized in that, A fifth oil groove is provided in the first friction area, and the fifth oil groove is connected to the second oil groove.

9. The compression assembly of the scroll compressor according to claim 8, characterized in that, The fifth oil tank is radially aligned with the oil inlet area of ​​the first oil tank.

10. A stationary scroll plate of a scroll compressor, characterized in that, include: The base and the stationary disc profile, wherein the base is provided with a mounting groove and the stationary disc profile is located in the mounting groove; The end face of the substrate surrounding the opening of the mounting groove is a thrust surface. The thrust surface includes a first friction area and a second friction area. The second friction area is located radially outside the first friction area. The first friction area is provided with an annular first oil groove. The second friction area is provided with an oil groove network. The oil groove network includes an annular second oil groove and a third oil groove connected thereto. The oil groove network divides the second friction area into multiple independent sub-regions. The radial width of the sub-region is L. The running eccentricity of the moving scroll is δ, where L≤1.5*δ.

11. The stationary scroll plate of the scroll compressor according to claim 10, characterized in that, The oil tank network also includes a fourth annular oil tank, which is located radially outside the second oil tank, and the fourth oil tank and the second oil tank are connected through the third oil tank.

12. A scroll compressor, characterized in that, Includes the compression component according to any one of claims 1-9.

13. A scroll compressor, characterized in that, Includes the stationary scroll plate of the scroll compressor according to claim 10 or 11.

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