CN114439747B

CN114439747B - Scroll compressor shafting lubricating structure, scroll compressor and air conditioner

Info

Publication number: CN114439747B
Application number: CN202111601060.5A
Authority: CN
Inventors: 方琪; 胡余生; 魏会军; 徐嘉; 单彩侠
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2023-11-10
Anticipated expiration: 2041-12-24
Also published as: CN114439747A

Abstract

The invention provides a scroll compressor shafting lubricating structure, a scroll compressor and an air conditioner, wherein the scroll compressor shafting lubricating structure comprises a crankshaft, a movable scroll and an upper bracket, wherein the movable scroll is provided with a movable disk bearing seat, a crankshaft eccentric part arranged on the crankshaft is rotatably inserted in the movable disk bearing seat, a sleeve matching hole is formed in the upper bracket, the scroll compressor shafting lubricating structure further comprises a balance sleeve which is provided with an inner hole and an outer circle, the movable disk bearing seat is rotatably inserted in the inner hole, the balance sleeve is rotatably inserted in the sleeve matching hole, the circle center of the outer circle coincides with the rotation center of the crankshaft, the circle center of the inner hole does not coincide with the circle center of the outer circle, and a first lubricating flow path is arranged between a sleeve trimming and the sleeve matching hole. According to the invention, the weight of the balance weight is smaller, so that the deformation of the crankshaft is reduced, and the vibration and noise of the compressor are reduced; the friction pair of the pump body can be fully lubricated.

Description

Scroll compressor shafting lubricating structure, scroll compressor and air conditioner

Technical Field

The invention belongs to the technical field of compressor manufacturing, and particularly relates to a scroll compressor shafting lubricating structure, a scroll compressor and an air conditioner.

Background

The vortex compressor consists of a closed shell, a fixed vortex plate, a movable vortex plate, a bracket, an eccentric crankshaft, an anti-rotation mechanism and a motor. The molded lines of the movable vortex plate and the fixed vortex plate are spiral, the movable vortex plate is eccentric relative to the fixed vortex plate and is installed 180 degrees different from the fixed vortex plate, and a plurality of crescent spaces are formed between the movable vortex plate and the fixed vortex plate. The movable vortex disk uses the center of the fixed vortex disk as a rotation center and uses a certain rotation eccentric radius to do rotation translation without autorotation, the crescent space of the outer ring continuously moves towards the center, at the moment, the refrigerant is gradually pushed to the center space, the volume of the refrigerant is continuously reduced, the pressure is continuously increased until the refrigerant is communicated with the center exhaust hole, and the high-pressure refrigerant is discharged out of the pump body to complete the compression process.

When the scroll compressor runs, oil is required to be supplied to each friction pair and each rolling pair, so that lubrication is realized, friction coefficient is reduced, and the abrasion problem of the friction pair is avoided. In addition, friction heat can be taken away, and meanwhile, an oil film is formed on the sealing surface to ensure sealing.

Disclosure of Invention

Therefore, the invention provides a scroll compressor shafting lubricating structure, a scroll compressor and an air conditioner, which can fully lubricate a friction pair of a pump body, reduce abrasion of the friction pair and take away generated friction heat.

In order to solve the problems, the invention provides a scroll compressor shafting lubricating structure, which comprises a crankshaft, a movable scroll and an upper bracket, wherein the movable scroll is provided with a movable disk bearing seat, a crankshaft eccentric part of the crankshaft is rotatably inserted into the movable disk bearing seat, a sleeve matching hole is formed in the upper bracket, the scroll compressor shafting lubricating structure further comprises a balance sleeve, the balance sleeve is provided with an inner hole and an outer circle, the movable disk bearing seat is rotatably inserted into the inner hole, the balance sleeve is rotatably inserted into the sleeve matching hole, the circle center of the outer circle coincides with the rotation center of the crankshaft, the circle center of the inner hole does not coincide with the circle center of the outer circle, a first lubricating flow path is arranged between a sleeve trimming and the sleeve matching hole, and the first lubricating flow path can be communicated with a crankshaft center oil hole on the crankshaft.

In some embodiments, the outer circle is provided with a sleeve trimming, the sleeve trimming penetrates through two axial ends of the balance sleeve, and the first lubrication flow path is formed between the sleeve trimming and the wall of the sleeve matching hole.

In some embodiments, a second lubrication flow path is provided between the rotor housing and the balance sleeve.

In some embodiments, a third lubrication flow path is provided between the crankshaft eccentric portion and the movable disk bearing seat.

In some embodiments, a movable disk sliding bearing is arranged between the crankshaft eccentric part and the movable disk bearing seat.

In some embodiments, the outer circumferential wall of the movable disc bearing seat is provided with a movable disc bearing seat trimming edge, and the second lubrication flow path is formed between the movable disc bearing seat trimming edge and the hole wall of the inner hole; and/or, a crankshaft eccentric part trimming is arranged on the outer circumferential wall of the crankshaft eccentric part, and the third lubrication flow path is formed between the crankshaft eccentric part trimming and the movable disc sliding bearing.

In some embodiments, a sealing ring groove is formed on the axial end face of the balancing sleeve, and is used for installing a sealing ring in the sealing ring groove.

In some embodiments, the seal ring has an oil-passing cutout that is capable of allowing lubricating oil to flow between a radially inner side and a radially outer side of the seal ring.

The invention also provides a scroll compressor, which comprises the scroll compressor shaft system lubricating structure.

The invention also provides an air conditioner comprising the vortex compressor.

According to the scroll compressor shafting lubricating structure, the scroll compressor and the air conditioner, on one hand, the inner hole is matched with the outer circumferential wall of the movable disc bearing seat, the outer circle is matched with the upper bracket through the sleeve matching hole, the crankshaft rotates to drive the movable scroll to revolve and translate through the crankshaft eccentric part, the movable scroll drives the balance sleeve to rotate, and as the rotation center of the balance sleeve coincides with the rotation center of the crankshaft, the balance sleeve is sleeved on the movable disc bearing seat and combined with the crankshaft eccentric part again to form a cylinder which is not eccentric, so that unbalanced mass on the shafting is only the substrate of the movable scroll and the scroll teeth on the substrate, and the movement mass required to be balanced is reduced, so that the rotation of the shafting is more stable, the mass required to be balanced is smaller, the deformation of the crankshaft is reduced, and the vibration and noise of the compressor are reduced; the balance sleeve sleeved outside the movable disc bearing seat can also be supported below the movable vortex disc, so that the overturning probability of the movable vortex disc can be effectively reduced, the running stability of the pump body is improved, and the efficiency of the compressor is improved; on the other hand, lubricating oil in the crankshaft center oil hole can be guided into the first lubricating flow path, so that sufficient lubrication between the balance sleeve and the upper bracket is realized, abrasion between friction pairs formed by the balance sleeve and the upper bracket is reduced, generated friction heat can be taken away, and reliable operation of the compressor is ensured.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a scroll compressor constructed in accordance with one embodiment of the present invention;

FIG. 2 is a schematic perspective view of a balance sleeve in a scroll compressor shaft lubrication system according to an embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of A-A of FIG. 3;

FIG. 5 is an assembled schematic view of the scroll compressor shafting lubrication structure of the present invention;

FIG. 6 is a schematic view showing the internal structure of the upper rack of FIG. 1;

FIG. 7 is a schematic cross-sectional view of B-B of FIG. 1;

FIG. 8 is a schematic perspective view of the orbiting scroll of FIG. 1;

FIG. 9 is an enlarged view of a portion of the oil passage cut of the seal ring of FIG. 1;

fig. 10 is a schematic diagram showing the flow direction of lubricating oil in the shafting lubricating structure of the scroll compressor according to the present invention.

The reference numerals are expressed as:

1. a scroll compressor; 2. a compression mechanism; 3. a driving section; 4. a motor; 5. a fixed scroll; 6. an orbiting scroll; 6a, a movable disc bearing seat; 6b, trimming the movable disc bearing seat; 7. a cross slip ring; 8. an upper bracket; 8a, sleeve matching holes; 8b, an inner hole of the main bearing of the upper bracket; 8c, an oil return hole of the upper bracket; 9. an upper cover; 10. a housing; 11. a balancing sleeve; 11a, an inner hole; 11b, an outer circle; 11c, sealing ring grooves; 11d, sleeve trimming; 111. a seal ring; 12. a movable disk sliding bearing; 12a, an inner hole of a sliding bearing of a movable disc; 13. a crankshaft; 13a, a crankshaft eccentric portion; 13b, a crankshaft center oil hole; 13c, trimming the main journal of the crankshaft; 13d, a radial oil hole (communicated with the central oil hole) of a main journal of the crankshaft; 13e, trimming the auxiliary journal of the crankshaft; 13f, a radial oil hole (communicated with a central oil hole) of a crankshaft auxiliary journal; 13g, trimming the eccentric part of the crankshaft; 14. thrust plate; 15. a main sliding bearing; 16. a main balance block; 17. a motor rotor; 18. a motor stator; 19. an auxiliary balance block; 20. a secondary bearing cover plate; 21. a lower bracket; 22. a sub-bearing; 23. an oil return pipe; 24. an oil supply mechanism; 25. a lower cover; 26. an oil storage tank; s, collecting space of an oil way at the upper part of the bracket; b1, a flow path for supplying lubricating oil; b2, a circulation path of lubricating oil return; b3, cutting edges through the movable vortex plate and then entering a flow path of the pump body through an oil-passing notch of the sealing ring; b4, passing through the oil through notch of the sealing ring and then entering the circulation path of the pump body through the trimming of the balance sleeve.

Detailed Description

Referring to fig. 1 to 10, according to an embodiment of the present invention, there is provided a lubrication structure for a scroll compressor shafting, including a crankshaft 13, a movable scroll 6, and an upper bracket 8, wherein the movable scroll 6 has a movable disk bearing seat 6a, a crankshaft eccentric portion 13a of the crankshaft 13 is rotatably inserted into the movable disk bearing seat 6a, a sleeve mating hole 8a is configured on the upper bracket 8, and further includes a balance sleeve 11, the balance sleeve 11 has an inner hole 11a and an outer hole 11b, wherein the movable disk bearing seat 6a is rotatably inserted into the inner hole 11a, the balance sleeve 11 is rotatably inserted into the sleeve mating hole 8a, a center of the outer hole 11b coincides with a rotation center of the crankshaft 13, and a center of the inner hole 11a does not coincide with a center of the outer hole 11b, that is, an eccentric design structure is formed between the inner hole 11a and the outer hole 11b, a first lubrication flow path 1 is provided between the sleeve cutting edge 11d and the sleeve mating hole 8a, and the first lubrication flow path 1 can be communicated with the crankshaft 13 b. In the technical scheme, on one hand, the inner hole 11a is matched with the outer circumferential wall of the movable disc bearing seat 6a, the outer circle 11b is matched with the upper bracket 8 through the sleeve matching hole 8a, the crankshaft 13 rotates to drive the movable disc 6 to revolve and translate through the crankshaft eccentric part 13a, the movable disc 6 drives the balance sleeve 11 to rotate, and as the rotation center of the balance sleeve 11 coincides with the rotation center of the crankshaft 13, the balance sleeve 11 is sleeved on the movable disc bearing seat 6a and combined with the crankshaft eccentric part 13a to form an eccentric cylinder, so that unbalanced mass on a shafting only has vortex teeth on a base plate and a base plate of the movable disc 6, the movement mass required to be balanced is reduced, so that the rotation of the shafting is more stable, the deformation of the crankshaft 13 is reduced, the vibration and noise of a compressor are reduced, the balance sleeve 11 sleeved outside the movable disc bearing seat 6a can also be supported under the movable disc 6, the efficiency of the movable disc 6 is improved, and the stability of the movable disc 6 is improved; on the other hand, the lubricating oil in the crankshaft central oil hole 13b can be guided into the first lubrication flow path a1, so that the balance sleeve 11 and the upper bracket 8 are fully lubricated and generated friction heat can be taken away, the abrasion between friction pairs formed by the balance sleeve 11 and the upper bracket is reduced, and the reliable operation of the compressor is ensured.

In some embodiments, the outer circle 11b is provided with a sleeve trimming 11d, the sleeve trimming 11d penetrates through two axial ends of the balance sleeve 11, the first lubrication flow path a1 is formed between the sleeve trimming 11d and the hole wall of the sleeve matching hole 8a, and the construction molding of the first lubrication flow path a1 is realized through the relative relation between the sleeve trimming 11d and the sleeve matching hole 8a, so that the processing operation is simple and easy.

In some embodiments, a second lubrication flow path a2 is provided between the movable disc bearing seat 6a and the balance sleeve 11, and/or a third lubrication flow path a3 is provided between the crankshaft eccentric portion 13a and the movable disc bearing seat 6a, and the second lubrication flow path a2 and the third lubrication flow path a3 are respectively communicated with the crankshaft central oil hole 13b so as to respectively form sufficient lubrication for corresponding parts.

In some embodiments, a movable disk sliding bearing 12 is provided between the crankshaft eccentric portion 13a and the movable disk bearing seat 6 a.

As a specific implementation manner of the second lubrication flow path a2 and the third lubrication flow path a3, a movable disc bearing seat trimming edge 6b is provided on an outer circumferential wall of the movable disc bearing seat 6a, and the second lubrication flow path a2 is formed between the movable disc bearing seat trimming edge 6b and a hole wall of the inner hole 11 a; and/or, the outer circumferential wall of the eccentric portion 13a has a crankshaft eccentric portion cut edge 13g, and the third lubrication flow path a3 is formed between the crankshaft eccentric portion cut edge 13g and the movable disk slide bearing 12.

In some embodiments, a seal ring groove 11c is configured on an axial end surface of the balance sleeve 11, and a seal ring 111 (for example, a PTFE seal ring) is disposed in the seal ring groove 11c, it is to be understood that the balance sleeve 11 has two shaft ends (that is, the foregoing axial end surfaces), each of which is configured with the seal ring groove 11c, so that, by contacting the seal ring 111 with an end surface of the corresponding movable scroll 6 or an end surface of the upper bracket 8, a region of a corresponding position is divided, specifically, a region of a shaft end is divided into a radially inner side and a radially outer side of the seal ring 111, so that refrigerant with different pressures can be introduced between the two regions, which is beneficial to ensuring a reliable seal between the movable scroll 6 and the fixed scroll 5, and also preventing the movable scroll 6 from tilting during a high-speed operation or a light-load operation.

In some embodiments, the seal ring 111 has an oil passing cut 111a, where the oil passing cut 111a can allow lubricating oil to flow between a radially inner side and a radially outer side of the seal ring 111, and the oil passing cut 111a may specifically utilize the principle of labyrinth sealing, and it is understood that the oil passing cut 111a should not be too large in size selection, on the design premise that the lubricating oil can be allowed to flow between the radially inner side and the radially outer side, and an oil film seal can be formed to prevent excessive channeling of pressure refrigerant on both sides.

According to an embodiment of the present invention, there is also provided a scroll compressor including the above-described scroll compressor shaft lubrication structure.

The technical scheme of the invention is further described below with reference to fig. 1 to 10.

As shown in fig. 1, a scroll compressor 1 accommodates a compression mechanism 2 and a driving portion 3 in a sealed container composed of a closed container upper cover 9, a closed container housing 10, and a closed container lower cover 25; the compression mechanism 2 (also referred to as a pump body) is composed of a fixed scroll 5, an orbiting scroll 6, and an cross slip ring 7; the driving portion 3 is mainly composed of a motor 4 and a crankshaft 13. In the working process of the scroll compressor, the driving part 3 drives the movable scroll 6 to operate, and the movable scroll is meshed with the fixed scroll 5 so as to form a crescent compression cavity. With the rotation of the crankshaft 13, the refrigerant (i.e., the refrigerant) enters the compression mechanism 2, the movable scroll 6 continues to rotate and translate and always keeps a good meshing state, the suction cavity continuously moves towards the center, the volume is continuously reduced, and the pressure in the cavity continuously rises. When the compression reaches a preset compression ratio, the refrigerant is discharged from a central exhaust port of the fixed scroll 5, enters the upper cover space of the sealed container, enters the space of the motor 4 through an exhaust channel of the fixed scroll 5 and the upper bracket 8, cools the motor 4, and then is discharged out of the scroll compressor 1 to enter an air conditioning system to complete refrigeration/heating cycle.

As shown in fig. 2, the balance sleeve 11 of the scroll compressor of the present invention has the core characteristics that the inner hole 11a and the outer circle 11b of the balance sleeve 11 are designed in an eccentric structure, i.e. the center of the inner hole 11a and the outer circle 11b are not concentric. As shown in the plan view of fig. 3, a sleeve cut edge 11d is provided on the sleeve outer circumference, and a seal ring groove 11c for accommodating the seal ring 111 is provided on each of the upper and lower end surfaces of the balance sleeve 11.

As shown in fig. 5, the shafting of the scroll compressor of the present invention integrally includes the movable scroll 6 and the balance sleeve 11, the main weight 16 and the motor rotor 17 are mounted on the crankshaft 13, and the sub weight 19 is mounted on the motor rotor 17. The seal rings 111 are placed in seal ring grooves 11c of the upper and lower end surfaces of the balance sleeve 11. The crankshaft eccentric portion 13a is inserted into the movable disk slide bearing inner hole 12a. As shown in fig. 7 and 8, a cut edge 6b is formed on the outer diameter of the movable disk bearing seat, a sleeve inner hole 11a is matched with the movable scroll 6, and a sleeve outer circle 11b is matched with an inner hole 8a of the upper bracket 8. The motor rotates to drive the crankshaft 13 to rotate, and the eccentric part 13a of the crankshaft drives the movable disc 6 to revolve and translate. The orbiting scroll 6 in turn rotates the balance sleeve 11, and is characterized in that the center of rotation of the balance sleeve 11 is the same as the center of rotation of the crankshaft 13 and is also concentric with the bracket bearing hole 8 b.

As shown in fig. 8, a cutting edge 6b is provided at the tail of the movable disk. As shown in fig. 9, the seal ring 111 is provided with an oil passage slit 111a. As shown in fig. 6, the upper bracket 8 has a bearing hole 8b and an oil return hole 8c.

As shown in fig. 7, the movable plate 6, the upper bracket 8, the balance sleeve 11, and the crankshaft 13 form oil passage passages therebetween. An oil path a3 formed by the crankshaft eccentric part trimming 13c and the movable disc sliding bearing inner hole 12 a; an oil path a2 formed by the movable disc bearing seat trimming 6b and the sleeve inner hole 11 a; the sleeve trim 11d and the upper bracket bore 8b form an oil passage a3, which communicates with each other.

As further shown in fig. 10, the oil circuit system structure and the circulation principle of the present invention are specifically described below.

The lubricating oil is stored in an oil reservoir 26 at the lower part of the compressor, and is supplied to the crankshaft center hole 13b through an oil supply mechanism (oil pump or other oil supply device) 24, and supplied from the lower part of the compressor to the upper part. The lubricating oil first passes through the radial oil hole 13f at the auxiliary journal of the crankshaft to supply the auxiliary bearing 22 with the lubricating oil. And then to the radial oil hole 13d of the main journal of the crankshaft and the trimming edge 13c of the main journal of the crankshaft to supply the lubricating oil to the main bearing 22, and the lubricating oil is collected in the oil passage collecting space S at the upper part of the upper bracket. The lubricating oil in the crankshaft center hole 13b then passes through the crankshaft eccentric portion cut edge 13g, that is, the oil passage a3 described above, to supply the lubricating oil to the disc bearing 12, which is collected in the upper bracket oil passage collection space S.

The lubricating oil in the bracket collecting space enters the back pressure cavity to lubricate the pump body, one of the two paths flows into the edge cutting 6b of the movable disc bearing seat, namely the oil passage a2, and enters the back pressure cavity through the oil passing notch 111a of the sealing ring 111 on the upper end surface of the balance sleeve 11 to lubricate the pump body. The other path of oil flows into an oil path formed by the sleeve trimming and the inner hole of the upper bracket through the notch 111a of the sealing ring 111 on the lower end surface of the balance sleeve 11, namely the oil path a1, lubricates the sleeve outer ring and then enters the back pressure cavity to lubricate the pump body.

The lubrication oil in the bracket collecting space S, except for the lubrication balance sleeve 11, the thrust plate 14 and the lubrication pump body entering the back pressure cavity, also has a great part of the lubrication oil returned to the oil storage space at the lower part of the compressor through the oil return pipe 23, thereby forming a complete and reliable oil circuit circulation.

The structure of the invention provides an effective lubrication system for the high-speed scroll compressor, realizes multi-channel oil supply of the pump body, optimizes the oil supply quantity of the pump body compared with the conventional oil supply design, greatly improves the sealing and lubrication effects of the compressor, improves the reliability of the compressor, improves the sealing effect of the movable scroll and the movable scroll, avoids the leakage of the pump body, and improves the efficiency of the compressor.

The foregoing is a specific exemplary embodiment of the present invention, and the core idea of the present invention is briefly expressed. By the oil supply system, the lubrication sealing effect of the scroll compressor during high-speed operation is achieved, the compressor is prevented from being worn out and disabled due to high-speed rotation, and the reliability and the compressor performance are improved.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. The utility model provides a scroll compressor shafting lubricating structure, its characterized in that includes bent axle (13), moves vortex dish (6), upper bracket (8), move vortex dish (6) have movable dish bearing frame (6 a), bent axle eccentric part (13 a) that bent axle (13) have rotatable cartridge in move in dish bearing frame (6 a), be constructed on upper bracket (8) and have sleeve mating hole (8 a), still include balanced sleeve (11), balanced sleeve (11) have hole (11 a) and excircle (11 b), wherein, move dish bearing frame (6 a) rotatable cartridge in hole (11 a), balanced sleeve (11) rotatable cartridge in sleeve mating hole (8 a), the centre of a circle of excircle (11 b) with the center of rotation of bent axle (13) coincides and the centre of a circle of hole (11 a) with the centre of a circle of excircle (11 b), have sleeve side cut (11 d) on excircle (11 b), sleeve (11 d) have one lubrication flow path (1 a) can be in between the lubrication path (13 a) and the first oil hole (1 a).

2. A scroll compressor shafting lubricating structure as set forth in claim 1, wherein said sleeve trim (11 d) penetrates through both axial ends of said balance sleeve (11), said sleeve trim (11 d) and a wall of said sleeve mating hole (8 a) forming said first lubricating flow path (a 1) therebetween.

3. A scroll compressor shafting lubrication structure as claimed in claim 1 or 2, characterized in that a second lubrication flow path (a 2) is provided between the movable disc bearing seat (6 a) and the balance sleeve (11).

4. A scroll compressor shafting lubricating structure according to claim 3, characterized in that a third lubricating flow path (a 3) is provided between the crankshaft eccentric portion (13 a) and the movable disc bearing seat (6 a).

5. A scroll compressor shafting lubricating structure according to claim 4, characterized in that a movable disc sliding bearing (12) is provided between the crankshaft eccentric portion (13 a) and the movable disc bearing seat (6 a).

6. The scroll compressor shafting lubricating structure of claim 5, wherein a movable disc bearing seat trim (6 b) is provided on an outer circumferential wall of the movable disc bearing seat (6 a), and the second lubricating flow path (a 2) is formed between the movable disc bearing seat trim (6 b) and a wall of the inner hole (11 a); and/or, a crankshaft eccentric portion side edge (13 g) is arranged on the outer circumferential wall of the crankshaft eccentric portion (13 a), and the third lubrication flow path (a 3) is formed between the crankshaft eccentric portion side edge (13 g) and the movable disk sliding bearing (12).

7. A scroll compressor shafting lubricating structure as claimed in claim 1, characterized in that a seal ring groove (11 c) is constructed on an axial end face of the balance sleeve (11), and a seal ring (111) is provided in the seal ring groove (11 c).

8. A scroll compressor shafting lubrication structure as claimed in claim 7, wherein the seal ring (111) has an oil passing cutout (111 a), the oil passing cutout (111 a) being capable of allowing lubricating oil to flow between a radially inner side and a radially outer side of the seal ring (111).

9. A scroll compressor comprising the scroll compressor shafting lubrication structure of any one of claims 1 to 8.

10. An air conditioner comprising the scroll compressor of claim 9.