WO2023221677A1

WO2023221677A1 - Compression assembly, fixed scroll, and scroll compressor

Info

Publication number: WO2023221677A1
Application number: PCT/CN2023/086550
Authority: WO
Inventors: 程军明; 梁卫恒; 何武鹏; 张康; 毛临书; 刘磊
Original assignee: 广东美的环境科技有限公司
Priority date: 2022-05-17
Filing date: 2023-04-06
Publication date: 2023-11-23
Also published as: EP4299910A1; CN117108500A

Abstract

A compression assembly (10), a fixed scroll (100) and a scroll compressor (1). The compression assembly (10) comprises the fixed scroll (100) and an orbiting scroll (400). The fixed scroll (100) comprises a base (110) provided with a mounting groove, wherein the end surface of the base (110) configured in a manner of surrounding an opening of the mounting groove is a thrust surface (111); the thrust surface (111) comprises a first friction area (200) and a second friction area (300), the first friction area (200) being provided with an annular first oil groove (210), the second friction area (300) being provided with an oil groove network (310), and the oil groove network (310) comprising a second oil groove (312) and a third oil groove (313). The orbiting scroll (400) comes into contact with the thrust surface (111), and the orbiting scroll (400) is provided with an upper oil hole (410), the upper oil hole (410) being in intermittent communication with the first oil groove (210).

Description

Compression components and fixed scrolls, scroll compressors

Cross-references to related applications

This application is filed based on the Chinese patent application with application number 202210541501.5 and the filing date is May 17, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.

Technical field

The present application relates to the field of compressors, specifically, to a compression assembly, a fixed scroll, and a scroll compressor.

Background technique

In the related art, the oil supply method to the thrust surface of the moving and stationary plates is suitable for compressor structures with low rotational speed and small displacement. The eccentricity of the moving plate of the compressor structure with a small displacement is small, and the distance between the edge of the moving plate and the oil groove of the static plate is short. The oil in the oil tank of the static plate can flow to any area on the thrust surface as the moving plate 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 higher. Large, the traditional oil supply lubrication method for the thrust surface of the moving and stationary discs can no longer meet the reliability requirements of compressor operation.

public content

This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a compression assembly that lubricates the thrust surface on the fixed scroll from different positions, improves the lubrication efficiency of the thrust surface, and can meet the lubrication requirements of high-speed compressors. advantage.

This application also proposes a fixed scroll with the compression assembly and a scroll compressor with the compression assembly.

According to an embodiment of the first aspect of the present application, a compression assembly is proposed. The compression assembly includes a fixed scroll. The fixed scroll includes a base body and a static plate profile. The base body is provided with a mounting groove. The static scroll plate is provided with a mounting groove. The disk profile line is located in the installation groove; the end surface of the base body is arranged around the opening of the installation groove and is a thrust surface, and the thrust surface includes a first friction area and a second friction area, and the second friction area is located at the Radially outside 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 includes an annular second oil groove and is connected with it. a third oil tank, the oil tank network divides the second friction area into multiple independent sub-areas; an orbiting scroll, the orbiting scroll is located on one side of the fixed scroll and is connected to the stop The thrust surface contacts, the movable scroll is provided with an oiling hole opening toward the thrust surface, the oiling hole is intermittently connected with the first oil groove, and the movable scroll is provided with an oiling hole connected to the second oil groove. A through hole connected to the oil groove, the through hole is adapted to communicate with the back pressure chamber; the back pressure chamber is adapted to be located on one side of the orbiting scroll to exert an action on the orbiting scroll towards the thrust surface force.

The compression assembly according to the embodiment of the present application has the advantages of lubrication of the thrust surface on the fixed scroll from different positions, improving the lubrication efficiency of the thrust surface, and being able to meet the lubrication requirements of high-speed compressors.

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

According to some embodiments of the present application, the outer diameter of the first friction area is 1.03-1.08 times the outer diameter of the orbiting scroll.

According to some embodiments of the present application, the oil groove network further includes an annular fourth oil groove, the fourth oil groove is located radially outside the second oil groove, and the fourth oil groove and the second oil groove pass through the third oil groove. The three oil tanks are connected.

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

According to some embodiments of the present application, the radial width m of the second oil groove is ≥ 0.8 mm.

According to some embodiments of the present application, the first oil groove is provided with an oil inlet area, the oil inlet area is intermittently connected with the oil filling hole, and the radial width of the oil inlet area is greater than that of the first oil groove. The radial width of the remainder.

In some embodiments, the inner wall of the oil inlet area is concave inwardly relative to the inner wall of the remaining portion of the first oil groove.

According to some embodiments of the present application, a fifth oil groove is provided in the first friction area, and the fifth oil groove is connected with the second oil groove.

In some embodiments, the fifth oil groove is arranged radially opposite the oil inlet area of the first oil groove.

According to an embodiment of the second aspect of the present application, a fixed scroll with the compression assembly is proposed. The fixed scroll includes a base body and a static plate profile line. The base body is provided with a mounting groove, and the static plate profile line is located at In the installation groove; the end surface of the base body arranged around the opening of the installation groove is a thrust surface, the thrust surface includes a first friction area and a second friction area, and the second friction area is located on the first Radially outside the 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 includes an annular second oil groove and a third oil groove connected thereto. Oil groove, the oil groove network divides the second friction area into multiple independent sub-areas.

In some embodiments, the oil groove network further includes an annular fourth oil groove, the fourth oil groove is located radially outside the second oil groove, and the fourth oil groove and the second oil groove pass through the third oil groove. Connected.

According to an embodiment of the third aspect of the present application, a scroll compressor having the compression assembly is provided, and the scroll compressor includes the compression assembly according to the embodiment of the first aspect of the present application.

In some embodiments, the scroll compressor includes a fixed scroll according to an embodiment of the second aspect of the application.

Additional aspects and advantages of the application 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 application.

Description of the drawings

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

Figure 1 is a cross-sectional view of a scroll compressor according to an embodiment of the present application.

Figure 2 is an enlarged view of point A in Figure 1.

FIG. 3 is an explanatory diagram of a friction area in a fixed scroll according to an embodiment of the present application.

Figure 4 is a schematic structural diagram of a fixed scroll according to an embodiment of the present application.

Figure 5 is a schematic structural diagram of a fixed scroll according to an embodiment of the present application.

Figure 6 is a cross-sectional view of the movable scroll according to the embodiment of the present application.

Reference signs: scroll compressor 1, compression assembly 10,

Fixed scroll 100, base body 110, thrust surface 111, static disk profile 120,

The first friction area 200, the first lubrication area 201, the second lubrication area 202, the first oil groove 210, the oil inlet area 220, the fifth oil groove 230,

The second friction area 300, the oil groove network 310, the second oil groove 312, the third oil groove 313, the radial oil groove 313a, the fourth oil groove 314, the sub-region 320,

Orbiting scroll 400, oil hole 410, assembly groove 420, scroll teeth 430, oil hole 440,

Back pressure chamber 51, oil pool 52, oiling piece 53, crankshaft 54, oil hole sealing screw 55,

Oiling channel 60 , transverse oiling channel 61 , and vertical oiling channel 62 .

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

The compression assembly 10 of the scroll compressor 1 according to the embodiment of the present application is described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 6 , the compression assembly 10 according to the embodiment of the present application includes a fixed scroll 100 and an orbiting scroll 400 .

The stationary scroll 100 includes a base body 110 and a stationary scroll profile 120. The base body 110 is provided with an installation slot. The stationary scroll profile 120 is located in the installation slot. The stationary scroll profile 120 cooperates with the movable scroll 400 so that the movable scroll 400 When rotating, it can cooperate with the static plate profile line 120 to jointly compress the air.

The end surface of the base body 110 surrounding the opening of the mounting groove is a thrust surface 111 . The thrust surface 111 includes a first friction area 200 , and the first friction area 200 is provided with an annular first oil groove 210 . It should be noted that the “annular” in this application refers to the first oil groove 210 extending in a circle along the circumferential direction, rather than specifically limiting the first oil groove 210 to an annular shape, as long as the first oil groove 210 can be formed along the circumferential direction. It only needs to extend circumferentially to present a circle shape. In this case, the first oil groove 210 can be in any shape such as an annular shape, a square shape, or an elliptical shape.

The orbiting scroll 400 is disposed on one side of the fixed scroll 100. The orbiting scroll 400 is in contact with the thrust surface 111. The orbiting scroll 400 is provided with an oiling hole 410 opening toward the thrust surface 111. The oiling hole 410 is connected to the first oil groove. 210 is intermittently connected. When the oil hole 410 is connected with the first oil groove 210, the lubricating oil can enter the first oil groove 210 through the oil hole 410. When the movable scroll 400 rotates, the movable scroll 400 can bring 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 .

Specifically, the orbiting scroll 400 can rotate relative to the base body 110. When the orbiting scroll 400 rotates to a certain position, the first oil groove 210 is connected to the oiling hole 410. At this time, lubricating oil can enter from the oiling hole 410. The first oil groove 210 is used to lubricate the first friction area 200 and reduce the friction coefficient between the movable scroll 400 and the first friction area 200, thereby ensuring that the movable scroll 400 can rotate smoothly.

The thrust surface 111 also includes a second friction area 300, which is located radially outside the first friction area 200. The second friction area 300 is provided with an oil groove network 310, and the oil groove network 310 includes an annular second oil groove. 312 third oil groove 313. The third oil groove 313 is connected with the second oil groove 312. The oil groove network 310 divides the second friction area 300 into a plurality of independent sub-areas 320.

The movable scroll 400 is provided with a through hole communicating with the second oil groove 312. The through hole is suitable for communicating with the back pressure chamber 51. The lubricating oil in the back pressure chamber 51 can flow from the through hole to the second oil groove 312. The oil groove 312 is connected with the third oil groove 313 , and the lubricating oil in the second oil groove 312 can also flow into the third oil groove 313 to increase the area where the lubricating oil can flow in the second friction area 300 . Furthermore, when the movable scroll 400 rotates, the movable scroll 400 can bring the lubricating oil in the second oil groove 312 and the third oil groove 313 to the remaining areas of the second friction area 300 to lubricate the second friction area 300 .

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 realize the control. The lubrication of the second friction area 300 facilitates reducing the friction coefficient between the movable scroll 400 and the second friction area 300, thereby ensuring that the movable scroll 400 can rotate smoothly.

The back pressure chamber 51 is suitable for being located on one side of the orbiting scroll 400 to exert a force on the orbiting scroll 400 toward the thrust surface 111 , so that the orbiting scroll 400 and the thrust surface 111 are always in a compressed state, ensuring that the compression assembly 10 The internal sealing ensures the cooperation between the movable scroll 400 and the static disk profile 120, so that the movable scroll 400 can cooperate with the static disk profile 120 to compress the air when rotating.

In some embodiments, the orbiting scroll 400 and the stationary plate profile 120 define a compression chamber. When the orbiting scroll 400 rotates, the orbiting scroll 400 can compress the air in the compression chamber, so that the scroll compressor 1 Able to discharge high-pressure gas. The compression chamber is connected with the back-pressure chamber 51 , that is to say, there is high-pressure gas in the back-pressure chamber 51 , and the high-pressure gas exerts a force on the movable scroll 400 toward the thrust surface 111 , so that the movable scroll 400 and the thrust surface 111 are forced. The push surface 111 is always in a compressed state to ensure the sealing of the compression chamber.

To sum up, by arranging the first friction area 200 and the second friction area 300 on the thrust surface 111, the large-scale lubrication problem is divided into the lubrication of local small areas, and the first oil groove is arranged in the first friction area 200. 210. A second oil groove 312 and a third oil groove 313 are provided in the second friction area 300. The lubricating oil can enter the first friction area 200 from the first oil groove 210 to lubricate the first friction area 200. The lubricating oil can pass from the first oil groove 210 to the first friction area 200. The second oil groove 312 enters the second friction area 300 to achieve lubrication of the second friction area 300 .

By lubricating the thrust surface 111 from different positions, the oil resistance of the movable scroll 400 during operation can be reduced, and the entire area of the thrust surface 111 can be fully lubricated to ensure that the compression assembly 10 is in a relatively stable state. In harsh working conditions, when the friction and PV value between the thrust surface 111 on the movable scroll 400 and the stationary scroll 100 are relatively severe, the thrust surface 111 can still be fully lubricated to avoid contact between the movable scroll 400 and the stationary scroll 100. Abnormal wear of the scroll 100 avoids serious wear on the entire thrust surface 111 .

Therefore, the compression assembly 10 according to the embodiment of the present application has the ability to lubricate the thrust surface 111 on the fixed scroll 100 from different positions, improve the lubrication efficiency of the thrust surface 111, and can meet the lubrication requirements of high-speed compressors, etc. advantage.

The compression assembly 10 according to specific embodiments of the present application is described below with reference to the accompanying drawings.

In some embodiments of the present application, the orbiting scroll 400 is provided with vortex teeth 430 , and the vortex teeth 430 are formed into a spiral structure. The stationary scroll profile 120 on the fixed scroll 100 is also formed into a spiral structure, and the vortex teeth 430 are formed into a spiral structure. It meshes with the static disk profile 120 to form a crescent-shaped compression cavity. When the movable scroll 400 rotates eccentrically, the volume of the crescent-shaped compression cavity changes continuously and periodically, thereby forming a complete suction, compression, and exhaust system. process.

In some embodiments, the movable scroll 400 and the fixed scroll 100 are made of metal materials to ensure the strength of the movable scroll 400 and the fixed scroll 100 and ensure that the compression assembly 10 can smoothly compress the air and form high-pressure air. .

In some embodiments of the present application, the outer diameter of the first friction area 200 is 1.03-1.08 times the outer diameter of the movable scroll 400 .

In some embodiments, the orbiting scroll 400 can rotate eccentrically relative to the stationary scroll profile 120 of the fixed scroll 100, and the outer diameter of the first friction area 200 is set to 1.03-1.08 times the outer diameter of the orbiting scroll 400, When the movable scroll 400 rotates, the movable scroll 400 can bring the lubricating oil in the first oil groove 210 to each area of the first friction area 200 to fully lubricate the first friction area 200 .

In some embodiments of the present application, the oil groove network 310 further includes an annular fourth oil groove 314. The fourth oil groove 314 is located radially outside the second oil groove 312. The fourth oil groove 314 and the second oil groove 312 pass through the third oil groove 313. The fourth oil groove 314 is connected to facilitate increasing the flow area of the lubricating oil at the second friction area 300, thereby facilitating sufficient lubrication of the second friction area 300.

In some embodiments, as shown in FIG. 5 , the second oil groove 312 and the fourth oil groove 314 are formed as annular oil grooves, and the third oil groove 313 includes a plurality of radial oil grooves 313a, and each radial oil groove 313a can communicate with the second oil groove 313a. The oil groove 312 and the fourth oil groove 314 are arranged so that the lubricating oil in the second oil groove 312 can flow to the fourth oil groove 314 along the radial oil groove 313a to increase the area where the lubricating oil can flow, so that the movable scroll 400 can fully rotate The lubricating oil is brought to each area of the second friction area 300 to achieve sufficient lubrication of the second friction area 300 .

In some embodiments of the present application, the radial width of the sub-region 320 is L, the operating eccentricity of the orbiting scroll 400 is δ, where L≤1.5*δ, and a third is provided between the sub-region 320 and the back pressure chamber 51 The radial width of the second oil groove 312 in the sub-region 320 is set to L≤1.5*δ. When the movable scroll 400 rotates, the movable scroll 400 can bring the lubricating oil in the second oil groove 312 to the sub-region 320, thereby The lubricating oil in the second oil groove 312 is brought to each area of the second friction area 300 to achieve sufficient lubrication of the second friction area 300 .

In some embodiments of the present application, the circumferential angle θ ≤ 90° of the sub-region 320 is used to divide the sub-region 320 into an arc shape, so that when the movable scroll 400 rotates, the lubricating oil at the second oil groove 312 can be removed. to the sub-area 320, and then bring the lubricating oil in the second oil groove 312 to each area of the second friction area 300 to achieve sufficient lubrication of the second friction area 300.

In some embodiments, as shown in Figure 5, the oil groove network 310 divides the second friction area 300 into six independent sub-areas 320, and the circumferential angle θ of each independent sub-area 320 is ≤90°, so as to form The arc-shaped sub-region 320 has a third oil groove 313 between two adjacent sub-regions 320 in the circumferential direction of the second friction region 300. The second oil groove 312 is located inside the sub-region 320, and the fourth oil groove 314 is located inside the sub-region 320. Outside area 320.

The lubricating oil in the back pressure chamber 51 can flow from the second oil groove 312 to the fourth oil groove 313 along the third oil groove 313 to fully increase the flow area of the lubricating oil in the second friction area 300, so that when the movable scroll 400 rotates, The orbiting scroll 400 can fully bring the lubricating oil in the second oil groove 312 , the third oil groove 313 and the fourth oil groove 314 to the sub-region 320 to fully lubricate the sub-region 320 and further lubricate the second friction region 300 . Adequate lubrication.

In some embodiments of the present application, the radial width m of the second oil groove 312 is ≥ 0.8 mm to ensure that the oil in the back pressure chamber 51 can flow into the second oil groove 312 when the movable scroll 400 rotates.

In some embodiments of the present application, the first oil groove 210 is provided with an oil inlet area 220. The oil inlet area 220 is intermittently connected with the oil hole 410. The lubricating oil at the oil hole 410 can enter the third oil tank from the oil inlet area 220. An oil groove 210 is provided 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 oil hole 410 and the oil inlet area 220, thereby increasing the oil supply amount.

Specifically, when the orbiting scroll 400 rotates, the oiling hole 410 rotates together with the orbiting scroll 400 . When the oiling hole 410 rotates to a position corresponding to the oil inlet area 220 , the oiling hole 410 is in contact with the oil inlet area. 220 are connected, at this time, the lubricating oil can enter the oil inlet area 220 from the oil hole 410, and flow into the first oil groove 210 from the oil inlet area 220.

The radial width of the oil inlet area 220 is set larger, so that when the movable scroll 400 rotates within a certain range, the oil inlet area 220 can continuously communicate with the oil filling hole 410, so that the lubricating oil can continuously flow from the oil filling hole 410. 410 enters the first oil groove 210 to increase the amount of oil supplied to the first oil groove 210 to facilitate sufficient lubrication of the first friction area 200 .

In some optional embodiments of the present application, the inner wall of the oil inlet area 220 is concave 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, it can smoothly use The lubricating oil at the oil hole 410 flows into the oil inlet area 220. On the other hand, it is convenient to increase the communication time between the oil inlet area 220 and the oil hole 410, and to increase the oil supply to the oil inlet area 220, so as to realize the third A sufficient lubrication of the friction area 200.

In some optional embodiments of the present application, a fifth oil groove 230 is provided in the first friction area 200, and the fifth oil groove 230 is connected with the second oil groove 312, so that the lubricating oil can flow between the second oil groove 312 and the fifth oil groove 230. flow between them, increasing the area where the lubricating oil can flow on the thrust surface 111, so as to fully lubricate the thrust surface 111.

In some optional embodiments of the present application, the fifth oil groove 230 is arranged radially opposite the oil inlet area 220 of the first oil groove 210 , so that the oil inlet area 220 on the first oil groove 210 and the oil inlet area 220 on the orbiting scroll 400 When the oiling hole 410 is connected, the fifth oil groove 230 is connected with the oiling hole 410. At this time, the lubricating oil can enter the fifth oil groove 230 through the oiling hole 410, and flow from the fifth oil groove 230 to the second oil groove 312, so as to The second friction zone 300 is supplied with oil.

In addition, since the fifth oil groove 230 is connected with the second oil groove 312, the lubricating oil at the fifth oil groove 230 flows into the second oil groove 312, and the second oil groove 312 is connected with the fourth oil groove 314 through the third oil groove 313, that is to say , when the oiling hole 410 is connected with the fifth oil groove 230, the lubricating oil can flow into the fifth oil groove 230 through the oiling hole 410, and flow from the fifth oil groove 230 to the second oil groove 312, the third oil groove 313 and the fourth oil groove. 314, to increase the flow area of the lubricating oil in the second friction area 300, so that the movable scroll 400 can fully drive the lubricating oil to lubricate the second friction area 300 when rotating.

In addition, when the lubricating oil flows to the second oil groove 312, since the second oil groove 312 and the back pressure chamber 51 are connected through the through holes, the lubricating oil in the second oil groove 312 can flow into the back pressure chamber 51 through the through holes, thereby forming a back pressure chamber. The pressure chamber 51 is replenished with lubricating oil.

As shown in Figure 3, in this embodiment, a first friction area 200 and a second friction area 300 are provided on the thrust surface 111 of the fixed scroll 100. The first friction area 200 and the second friction area 300 are formed into an annular area. The second friction area 300 is located outside the first friction area 200 .

As shown in Figure 4, the first friction area 200 includes a first lubrication area 201 and a second lubrication area 202. The second lubrication area 202 is located outside the first lubrication area 201 and between the first lubrication area 201 and the second lubrication area 202. A first oil groove 210 is defined, and lubricating oil can enter the first friction area 200 from the first oil groove 210. When the movable scroll 400 rotates, the movable scroll 400 can drive the lubricating oil in the first oil groove 210 to the first lubrication area. 201 and the second lubrication area 202 are lubricated to achieve lubrication of the first friction area 200.

As shown in FIG. 4 , one part of the first lubrication area 201 is recessed in a direction close to the stationary plate profile 120 to form an oil inlet area 220 . The oil inlet area 220 is connected with the first oil groove 210 . When the movable scroll 400 rotates, , the oil inlet area 220 is intermittently connected with the oil filling hole 410 of the movable scroll 400, so that the lubricating oil can enter the oil inlet area 220 through the oil filling hole 410, so that the lubricating oil can flow from the oil inlet area 220 to the first oil groove 210 .

A fifth oil groove 230 is provided in the second lubrication area 202 at a position corresponding to the oil inlet area 220. The fifth oil groove 230 is recessed in a direction close to the static plate profile line 120, and is in the same recess direction as the oil inlet area 220. When oil is inlet When the area 220 is connected to the oil filling hole 410, the fifth oil groove 230 is connected to the oil filling hole 410, and the lubricating oil can enter the fifth oil groove 230 from the oil filling hole 410.

As shown in Figure 5, the second friction area 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 are formed as annular oil grooves. The third oil groove 313 includes a plurality of radial oil grooves 313a. Each radial oil groove 313a can communicate with the second oil groove 312 and the fourth oil groove 314. The second oil groove 313a includes a plurality of radial oil grooves 313a. 312 is located outside the second lubrication area 202, and the second oil groove 312 is connected with the fifth oil groove 230.

When the fifth oil groove 230 is connected with the 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 movable scroll 400 rotates, The lubricating oil can be driven to lubricate multiple sub-regions 320 .

The fixed scroll 100 according to the embodiment of the present application is described below. The stationary scroll 100 according to the embodiment of the present application includes a base body 110 and a stationary plate profile line 120. The base body 110 is provided with a mounting groove, and the stationary plate profile line 120 is located in the installation groove to realize the positioning of the stationary plate profile line 120 and the stationary plate profile line 120. The disc wire 120 is mounted on the base 110 .

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

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

The oil groove network 310 divides the second friction area 300 into a plurality of independent sub-areas 320 to divide a larger lubrication area into smaller lubrication areas to facilitate sufficient lubrication of the second friction area 300 .

In some optional embodiments of the present application, the oil groove network 310 also includes an annular fourth oil groove 314. The fourth oil groove 314 is located radially outside the second oil groove 312. The fourth oil groove 314 and the second oil groove 312 pass through the third oil groove 314. The oil grooves 313 are connected, and the fourth oil groove 314 is provided to increase the flow range of the lubricating oil in the second friction area 300 to facilitate lubrication of the second friction area 300 .

In some embodiments, as shown in FIG. 5 , the second oil groove 312 and the fourth oil groove 314 are formed as annular oil grooves, and the third oil groove 313 includes a plurality of radial oil grooves 313a, and each radial oil groove 313a can communicate with the second oil groove 313a. The oil groove 312 and the fourth oil groove 314 are arranged so that the lubricating oil in the second oil groove 312 can flow to the fourth oil groove 314 along the radial oil groove 313a, so as to increase the circulation area of the lubricating oil in the second friction area 300 and make the movable vortex The disc 400 can fully bring the lubricating oil to each area of the second friction area 300 when rotating.

The scroll compressor 1 according to the embodiment of the present application is described below.

In some embodiments of the present application, the scroll compressor 1 according to the embodiment of the present application includes the compression assembly 10 according to the above-mentioned embodiment of the present application.

In some embodiments, as shown in FIG. 1 , the compression assembly 10 is disposed on one side of the scroll compressor 1 , and an oil pool 52 is provided on the other side of the scroll compressor 1 . The oil pool 52 is used to store lubricating oil. The scroll compressor 1 is also provided with a crankshaft 54. The scroll compressor 1 is also provided with an oiling piece 53 and an oiling channel 60. The oiling channel 60 extends from the crankshaft 54 to the orbiting scroll 400. The oiling channel 60 has One end is connected to the oil pool 52, and the other end is connected to the oiling hole 410. The oiling piece 53 is located in the oiling channel 60. When the crankshaft 54 rotates, the oiling piece 53 located in the oiling channel 60 can be driven to rotate. At this time, the oiling piece 53 is connected to the oiling hole 410. The rotation of the oil piece 53 generates suction force to transport the lubricating oil in the oil pool 52 to the oil supply channel 60 . The lubricating oil entering the oil supply channel 60 can enter the first oil tank 210 and the fifth oil tank 230 through the oil supply hole 410 .

As shown in Figures 1 and 6, in this embodiment, the movable scroll 400 is provided with an assembly groove 420 on the side facing the crankshaft 51, and one end of the crankshaft 54 extends into the assembly groove 420 to realize the connection between the crankshaft 54 and the movable scroll. 400 connection, when the crankshaft 54 rotates, it can drive the movable scroll 400 to rotate eccentrically to compress the air, and during the rotation process, the movable scroll 400 can drive the lubricating oil in the first oil tank 210 and the fifth oil tank 230 to rotate. The first friction area 200 is lubricated, driving 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.

In some optional embodiments, as shown in FIG. 2 , 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, on top of the assembly groove 420 . below the wall. The transverse oiling passage 61 is located on the orbiting scroll 400 . An oil passage hole 440 is provided on the top wall of the assembly groove 420, and the oil passage hole 440 communicates with the vertical oil supply channel 62 and the transverse oil supply channel 61.

The oiling piece 53 is arranged in the vertical oiling channel 62. The horizontal oiling channel 61 connects the oiling hole 410 and the oil through hole 440. The lubricating oil in the oil pool 52 enters the vertical oiling under the action of the suction generated by the oiling piece 53. The channel 62 flows from the oil through hole 440 into the transverse oil supply channel 61, flows from the transverse oil supply channel 61 to the oil supply hole 410, and flows through the oil supply hole 410 to the first oil groove 210 and the fifth oil groove 230.

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

Specifically, in order to process the transverse oiling passage 61 in the orbiting scroll 400, the orbiting scroll 400 can be processed on one side of the orbiting scroll 400 to form the transverse oiling passage 61. At this time, the transverse oiling passage 61 is There is an opening on this side, which is connected with the transverse oiling channel 61. An oil hole sealing screw 55 is provided at the opening to seal the transverse oiling channel 61 to a certain extent and prevent the lubricating oil in the transverse oiling channel 61 from leaking out. Leaks from openings.

In addition, the oil hole sealing screw 55 can guide the lubricating oil in the transverse oiling channel 61 to flow toward the oiling hole 410 , so that the lubricating oil can enter the thrust surface 111 from the oiling hole 410 . The outer diameter of the oil hole sealing screw 55 is smaller than the size of the transverse oiling channel 61 , which facilitates the installation of the oil hole sealing screw 55 in the transverse oiling channel 61 .

The scroll compressor 1 according to the embodiment of the present application, by using the compression assembly 10 according to the above embodiment of the present application, has the ability to lubricate the thrust surface 111 on the fixed scroll 100 from different positions and improve the thrust surface 111 It has the advantages of excellent lubrication efficiency and being able to meet the lubrication needs of high-speed compressors.

In other embodiments of the present application, the scroll compressor 1 according to the embodiment of the present application includes the fixed scroll 100 according to the above-mentioned embodiment of the present application. By arranging a first friction on the thrust surface 111 of the fixed scroll 100 The first friction area 200 and the second friction area 300 are provided with a first oil groove 210 in the first friction area 200, and the first friction area 200 is lubricated by the lubricating oil in the first oil groove 210.

The second friction area 300 is divided into a plurality of independent sub-areas 320 by the oil groove network 310. The second oil groove 312 and the third oil groove 313 are provided in the second friction area 300, and the second oil groove 312 and the third oil groove 313 are utilized. The lubricating oil lubricates the second friction area 300 .

Specifically, by dividing the large-scale lubrication problem into local small-area lubrication, and lubricating the thrust surface 111 from different positions, on the one hand, the oil-laden resistance during the operation of the movable scroll 400 can be reduced. , on the other hand, it is possible to lubricate the entire area of the thrust surface 111, thereby improving the lubrication efficiency of the thrust surface 111 with lubricating oil, meeting the lubrication requirements of the high-speed compressor, and ensuring the operational reliability of the scroll compressor 1.

Other structures and operations according to the embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail here.

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis", The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or element to which it refers. Must have a specific orientation, be constructed and operate in a specific orientation and therefore should not be construed as a limitation on this application. In addition, features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise stated, "plurality" means two or more. In the description of this application, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in direct contact with each other. additional characteristic contacts between.

In the description of this application, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is horizontally higher than Second characteristic.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be incorporated into the description of the implementation. An example or example describes a specific feature, structure, material, or characteristic that is included in at least one embodiment or example of the present application. In this specification, schematic representations 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 any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A compression component of a scroll compressor, which includes:

A fixed scroll, the fixed scroll includes a base body and a static plate profile, the base body is provided with a mounting groove, and the static plate profile is located in the mounting groove;

The end surface of the base body arranged around the opening of the mounting slot has 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, and 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 Divide the second friction area into multiple independent sub-areas;

An orbiting scroll, the orbiting scroll is disposed on one side of the fixed scroll and is in contact with the thrust surface, the orbiting scroll is provided with an oiling hole opening toward the thrust surface, and the upper The oil hole is intermittently connected to the first oil groove, and the orbiting scroll is provided with a through hole connected to the second oil groove. The through hole is adapted to communicate with the back pressure chamber; the back pressure chamber is adapted to be located in One side of the orbiting scroll exerts a force on the orbiting scroll toward the thrust surface.
The compression assembly of the scroll compressor according to claim 1, wherein the outer diameter of the first friction area is 1.03-1.08 times the outer diameter of the orbiting scroll.
The compression assembly of the scroll compressor according to claim 1 or 2, wherein the oil groove network further includes an annular fourth oil groove, the fourth oil groove is located radially outside the second oil groove, and the fourth oil groove is located radially outside the second oil groove. The oil tank and the second oil tank are connected through the third oil tank.
The compression assembly of a scroll compressor according to claim 3, wherein the radial width of the sub-region is L, and the operating eccentricity of the orbiting scroll is δ, where L≤1.5*δ; and/or

The circumferential angle θ of the sub-region is ≤90°.
The compression assembly of the scroll compressor according to any one of claims 1 to 4, wherein the radial width m of the second oil groove is ≥ 0.8 mm.
The compression assembly of a scroll compressor according to any one of claims 1 to 5, wherein the first oil groove is provided with an oil inlet area, and the oil inlet area is intermittently connected with the oil filling hole, so The radial width of the oil inlet area is greater than the radial width of the remaining portion of the first oil groove.
The compression assembly of the scroll compressor according to claim 6, wherein the inner wall of the oil inlet area is concave inwardly relative to the inner wall of the remaining portion of the first oil groove.
The compression assembly of the scroll compressor according to any one of claims 1 to 7, wherein a fifth oil groove is provided in the first friction area, and the fifth oil groove is connected with the second oil groove.
The compression assembly of the scroll compressor according to claim 8, wherein the fifth oil groove is arranged radially opposite to the oil inlet area of the first oil groove.
A fixed scroll of a scroll compressor, which includes:

The base body and the static plate profile line, the base body is provided with an installation groove, and the static plate profile line is located in the installation groove;

The end surface of the base body arranged around 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 The road divides the second friction area into multiple independent sub-areas.
The fixed scroll of the scroll compressor according to claim 10, wherein the oil groove network further includes an annular fourth oil groove, the fourth oil groove is located radially outside the second oil groove, and the fourth oil groove It is connected with the second oil tank through the third oil tank.
A scroll compressor, comprising the compression assembly according to any one of claims 1-9.
A scroll compressor, comprising a fixed scroll of the scroll compressor according to claim 10 or 11.