CN113482919B

CN113482919B - Scroll compressor's seal structure, scroll compressor and air conditioner

Info

Publication number: CN113482919B
Application number: CN202110896418.5A
Authority: CN
Inventors: 叶天志; 陈肖汕; 刘韵; 韦衍; 张俊杰
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-01-10
Anticipated expiration: 2041-08-05
Also published as: CN113482919A

Abstract

The invention provides a sealing structure of a scroll compressor, the scroll compressor and an air conditioner, wherein the sealing structure of the scroll compressor comprises: the cover body comprises a first end face positioned at one axial end of the cover body, the static disc comprises a second end face positioned at one axial end of the static disc, the first end face is opposite to the second end face so that the cover body is covered on the static disc, the first end face is not opposite to the shell, and a first sealing element is arranged between the first end face and the second end face; the casing sets up in the radial outside of quiet dish, and is provided with the second sealing member between the radial outer peripheral face of quiet dish and the radial inner peripheral face of casing. According to the invention, the sealing between the cover body and the static disc and between the static disc and the shell can be effectively completed, the sealing performance is improved, the leakage is prevented or reduced, and the leakage problem is solved; and 3 end faces are not required to be designed with sealing structures, the requirement on the machining precision of the sealing element is reduced, and therefore the machining cost is effectively reduced.

Description

Scroll compressor's seal structure, scroll compressor and air conditioner

Technical Field

The invention relates to the technical field of compressors, in particular to a sealing structure of a scroll compressor, the scroll compressor and an air conditioner.

Background

The scroll compressor has the advantages of few parts, high volumetric efficiency, high energy efficiency ratio, small vibration, low noise and the like. The horizontal aluminum shell scroll compressor has the advantages of small volume, light weight, high efficiency, low noise and the like, and is generally applied to passenger vehicles. In order to realize the light weight design, most parts in the aluminum shell scroll compressor are made of aluminum alloy, the aluminum alloy has difficulty in a welding process, and a full-closed structure cannot be realized while a semi-closed structure is adopted for realizing sealing. The good and bad tightness of the compressor has great influence on the performance and the reliability of the compressor. The semi-closed design has strict requirements on the machining precision and the assembly precision of important parts such as a front cover, a static disc, a bracket, a shell and the like, so that the cost of the compressor is increased.

Fig. 1 shows a conventional aluminum case sealing form: the axial compression of the static disc is realized by flattening the convex sealing sheet by the first plane of the front cover and then pressing the first plane of the static disc by the convex sealing sheet, and the axial fixation of the static disc is realized. Meanwhile, a groove is formed in the second plane of the static disc for placing a sealing ring, the second end face of the front cover extrudes the O-shaped ring, but a gap is reserved between the second plane of the static disc and the second plane of the front cover, and high-pressure gas is sealed in a cavity formed by the front cover and the static disc; the protruding sealing piece is pressed to the first plane of the front cover to be in contact with the plane of the shell, so that low-pressure gas is sealed. The problem of this kind of sealed mode lies in, the axial fixity of quiet dish is realized through the protruding sealing washer of protecgulum first plane pressure, and the sealed of low pressure gas is realized through the protruding sealing washer of protecgulum first plane pressure and casing contact, and this first plane and the casing plane of quiet dish must keep the coplanar after the complete machine assembly, and the protecgulum first plane must level and smooth, and this has improved the processing of compressor part and assembly required precision greatly, improves the complete machine cost.

The scroll compressor in the prior art has the problems of over-constraint of the axial size among the front cover assembly, the shell assembly and the static disc assembly, so that the sealing performance is reduced, and the machining precision of parts is required to be improved in order to overcome the over-constraint problem of the size, so that the machining cost is increased; and the technical problem that the exhaust end cannot effectively return oil due to the large pressure difference between the high pressure sides of the compressors at the low pressure side exists, and the like, so that the invention researches and designs a sealing structure of the scroll compressor, the scroll compressor and the air conditioner.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects that the scroll compressor in the prior art has the problem of over-restriction of the axial dimension among the front cover assembly, the shell assembly and the static disc assembly, which results in the reduction of the sealing performance, and the leakage easily exists between the high pressure and the low pressure inside the compressor, or between the compressor and the external environment, so as to provide a sealing structure of the scroll compressor, the scroll compressor and the air conditioner.

In order to solve the above problems, the present invention provides a sealing structure of a scroll compressor, including:

the cover body comprises a first end face located at one axial end of the cover body, the static disc comprises a second end face located at one axial end of the static disc, the first end face is opposite to the second end face so that the cover body is covered on the static disc, the first end face is not opposite to the shell, and a first sealing element is arranged between the first end face and the second end face; the casing is arranged on the radial outer side of the static disc, and a second sealing element is arranged between the radial outer peripheral surface of the static disc and the radial inner peripheral surface of the casing.

In some embodiments, the first seal is a sealing sheet structure compressed between the first end face and the second end face by the lid.

In some embodiments, oil storage chamber and lid oil return path have been seted up on the lid, quiet dish oil return path has been seted up on the quiet dish, be provided with on the first sealing member and lead the oil passageway, it includes oil feed end and produces oil end to lead the oil passageway, lid oil return path one end with oil storage chamber intercommunication, the other end can with lead the oil channel the oil feed end intercommunication, lead the oil channel produce oil the end can with quiet dish oil return path intercommunication.

In some embodiments, the first sealing element is an annular structure, and a groove structure is opened on an end surface of the first sealing element facing the first end surface of the cover body to form the oil guide channel, and the oil guide channel is an arc-shaped groove structure.

In some embodiments, still include the support, the quiet dish still include in the axial with the third terminal surface that the second terminal surface carried on the back mutually, the support with the quiet dish the third terminal surface meets, just support oil return channel has still been seted up to the support inside, support oil return channel's one end can with the one end intercommunication of quiet dish oil return channel, support oil return channel's the other end can be derived oil.

In some embodiments, the housing includes a fourth end surface at one axial end, the cover further includes a fifth end surface opposite the fourth end surface, the fifth end surface is not flush with the first end surface, and a gap is provided between the fifth end surface and the fourth end surface.

In some embodiments, the cover further comprises a threaded connector capable of penetrating the fifth end surface of the cover and the fourth end surface of the housing to secure the cover to the housing.

In some embodiments, a stationary disc seal groove is formed in a radially outer peripheral surface of the stationary disc, the second seal is disposed in the stationary disc seal groove, and the second seal is attached to the radially inner peripheral surface of the casing.

In some embodiments, a casing sealing groove is formed in a radially inner circumferential surface of the casing, the second sealing member is disposed in the casing sealing groove, and the second sealing member is attached to a radially outer circumferential surface of the stationary disk.

In some embodiments, the second seal is in the form of an annular seal ring.

The invention also provides a scroll compressor, which comprises the sealing structure of the scroll compressor.

The invention also provides an air conditioner which comprises the scroll compressor.

The sealing structure of the scroll compressor, the scroll compressor and the air conditioner provided by the invention have the following beneficial effects:

1. according to the invention, the first sealing element arranged between the first end face of the cover body and the second end face of the static disc can only effectively seal the combination of the two end faces, namely, the static disc and the cover body, and the three end faces are not required to be sealed together in the prior art, so that the problem of over-constraint of the axial size among the front cover, the shell and the static disc can be avoided, the sealing property is effectively improved, the second sealing element arranged between the radial inner circumferential surface of the shell and the outer circumferential surface of the static disc can form effective sealing between the shell and the static disc, so that the sealing among the cover body, the static disc and the shell is effectively completed, the high-pressure gas is effectively prevented from entering the static disc and other positions through the cover body side, the low-pressure gas is also effectively prevented from entering the static disc and other positions through the shell, the sealing performance is improved, the leakage between the high pressure and the low pressure in the compressor is prevented or reduced, and the leakage problem between the compressor and the external environment is solved; moreover, because the sealing structures do not need to be designed aiming at 3 end faces, the requirement on the machining precision of the sealing element is reduced, and the machining cost is effectively reduced;

2. the oil guide channel is formed in the first sealing element, so that oil can be effectively guided from the high-pressure oil storage cavity and the high-pressure oil return channel on the cover body, and the oil can be throttled and decompressed after passing through the oil guide channel, so that the oil pump can effectively pump oil with proper pressure to parts needing lubrication, such as a main bearing and the like, the conditions such as back pressure rise and the like are prevented, the problem of oil return from the high-pressure side to the low-pressure side of the compressor is solved, and the oil return from the high-pressure side is continuously and effectively carried out.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a portion of a prior art scroll compressor;

FIG. 2 is a longitudinal sectional view showing the internal structure of a scroll compressor according to a first embodiment of the present invention;

FIG. 3 is a longitudinal sectional view showing the internal structure of a scroll compressor according to a second embodiment of the present invention;

fig. 4 is a top view structural view of the first seal member in fig. 2.

The reference numerals are represented as:

1. a cover body; 1-1, a cover body oil return channel; 1a, a first end face; 1b, a fifth end face; 2. a stationary disc; 2-1, a static disc oil return channel; 2-2, sealing grooves of the static disc; 2a, a second end face; 2b, a third end face; 3. a movable plate; 4. a support; 4-1, a bracket oil return channel; 5. an eccentric adjustment member; 6. a crank pin; 7. a crankshaft; 8. a housing; 8-1, sealing grooves of the shell; 8a, a fourth end face; 9. a motor; 9-1, a motor stator; 9-2, a motor rotor; 10. an air suction port; 11. a secondary bearing; 12. a main bearing; 13. a movable disc bearing; 14. an eccentricity adjusting piece limiting pin; 15. a wear resistant sheet; 16. the anti-rotation limiting pin; 17. an oil storage chamber; 18. an oil separation device; 19. a first seal member; 19-1: an oil guide channel; 19a, an oil inlet end; 19b, an oil outlet end; 19c, positioning holes; 20. a second seal member; 21. a threaded connection.

Detailed Description

As shown in fig. 2 to 4, the present invention provides a sealing structure of a scroll compressor, which includes:

the cover comprises a cover body 1, a shell body 8 and a static disc 2, wherein the cover body 1 comprises a first end surface 1a positioned at one axial end of the cover body, the static disc 2 comprises a second end surface 2a positioned at one axial end of the static disc, the first end surface 1a is opposite to the second end surface 2a so that the cover body 1 covers the static disc 2, the first end surface 1a is not opposite to the shell body 8, and a first sealing element 19 is arranged between the first end surface 1a and the second end surface 2 a;

the housing 8 is disposed radially outward of the stationary disk 2, and a second seal 20 is disposed between a radially outer peripheral surface of the stationary disk 2 and a radially inner peripheral surface of the housing 8.

According to the invention, the first sealing element is arranged between the first end face of the cover body and the second end face of the static disc, so that effective sealing can be effectively realized only aiming at the combination of the two end faces, namely, effective and accurate sealing can be realized between the static disc and the cover body, and the problem of over-constraint of the axial size among the front cover, the shell and the static disc can be avoided without aiming at the sealing of three end faces in the prior art, so that the sealing property is effectively improved, and the effective sealing is formed between the shell and the static disc through the second sealing element arranged on the inner circumferential surface in the radial direction of the shell and the outer circumferential surface of the static disc, so that the sealing between the cover body and the static disc and the shell is effectively completed, high-pressure gas is effectively prevented from entering the positions such as the static disc through the side of the cover body, low-pressure gas is also effectively prevented from entering the positions such as the static disc through the shell, the sealing property is improved, the leakage between the high pressure and the low pressure in the compressor is prevented or reduced, and the leakage problem between the compressor and the external environment is solved; and because 3 end faces are not required to be designed with sealing structures, the requirement on the machining precision of the sealing element is reduced, and the machining cost is effectively reduced.

The technical scheme implementation object of the invention is a scroll compressor, and the scroll compressor adopts a sealing structure, relates to a front cover, a shell, a static disc and a bracket, realizes high-pressure and low-pressure sealing and oil return lubrication in the compressor, reduces the requirements on the processing and assembling precision of parts, and realizes cost reduction.

The technical scheme of the invention can realize the sealing of high pressure and low pressure as well as the inside and the outside of the compressor without providing high-precision requirements on the axial dimensions of the static disc, the bracket and the shell, simultaneously solves the problem of throttling and pressure reduction of oil return in the compressor, has simple structure, reduces the manufacturing cost of the compressor, and ensures the normal operation of the compressor.

The invention 1, the over-constraint problem of the axial size of the front cover component and the shell component, the front cover component and the static disc component, reduces the processing precision of parts and reduces the processing cost; 2. the separation of high pressure and low pressure in the compressor is realized, and the problem of sealing the compressor and the external environment is solved; 3. the problem of oil return from the high-pressure side to the low-pressure side of the compressor is solved.

The invention firstly improves the sealing performance and secondly realizes oil return lubrication by utilizing the sealing structure. A first sealing element 19 (namely a plane sealing sheet) is arranged between the cover body 1 (namely a front cover) and the static disc 2, a radial second sealing element 20 (namely an O-shaped sealing ring) is arranged between the static disc 2 and the shell body 8, and an oil guide channel 19-1 (namely an oil return throttling channel) is arranged in the plane sealing sheet.

1. The plane sealing sheet is preferably made of rubber materials, an oil return throttling passage is formed in the plane sealing sheet, the oil inlet end of the oil return throttling passage is connected with the oil return passage 1-1 of the cover body, the oil outlet end of the oil return throttling passage is connected with the static disc oil return passage 2-1, the other end of the static disc oil return passage 2-1 is connected with the support oil return passage 4-1, and the support oil return passage 4-1 leads to a main bearing for lubrication.

2. A sealing groove is radially arranged on the static disc 2 or the shell 8, and an O-shaped ring is arranged in the sealing groove;

3. the back of the static disc is a plane, and a plane sealing sheet is arranged between the front cover and the static disc 2 and is pressed by the front cover to realize sealing.

The pump body of compressor is formed by the cooperation of quiet dish 2 and driving disk 3, and during 4 interference fit of support was to casing 8, place wear pad 15 between support 4 and the driving disk 3, this wear pad was made by the better material of wearability, prevented the wearing and tearing of the driving disk back and support terminal surface, improved the reliability of compressor. The crank pin 6 is eccentrically pressed into a hole formed in the upper end face of the crankshaft 7 in an interference manner. The crank pin, the joint clearance of driving disk set up driving disk bearing 13 and eccentric adjusting part 5, and this eccentric adjusting part's effect makes the compressor can realize the fine setting of driving disk eccentricity in the operation process. The motor rotor 9-2 is pressed into the crankshaft 7 in an interference manner and forms a shafting assembly together with the crank pin 6 and the main bearing 12. When the compressor is powered on, the shafting assembly is driven to rotate by the motor stator 9-1. The bottom of the movable disc is provided with a certain number of circular sinking grooves which are matched with an autorotation prevention limit pin 16 and an eccentricity adjusting part limit pin 14 to prevent the rotation of the movable disc. The shafting component drives the movable disc 3 to move horizontally around the static disc 2 to form a plurality of crescent chambers with the volume changing along with the angle, thereby completing the processes of air suction, compression and exhaust of the refrigerant of the compressor.

The refrigerant of the compressor enters the compressor from the air suction port 10, the lubricating oil in the oil storage area of the low-pressure chamber is driven to enter a compression cavity consisting of the movable disc 3 and the static disc 2 through the bracket through-flow hole and the wear-resistant plate through-flow hole, the crankshaft 7 is driven by the motor 9 to complete the compression process, and the compressed high-temperature high-pressure gas refrigerant carries the lubricating oil to be discharged from the exhaust port of the static disc. The gas refrigerant with entrained lubricant oil sinks to the high pressure oil storage chamber 17 under the action of gravity and centrifugal force through the oil separator 18, and the gas is discharged out of the compressor through the gas outlet.

The compressor needs to realize the independence of internal low pressure and high pressure and the independence of the internal and the external parts during normal operation. A flat seal piece (first seal 19) is mounted between the second end face 2a of the stationary disc and the first end face 2a of the lid body 1, and is positioned by a positioning hole 19 c. When a screw (a threaded connecting piece 21) is tightened, the plane sealing piece is stressed and compressed, the sealing of a high-pressure side can be realized, high-pressure gas is sealed in a high-pressure exhaust cavity, and a radial O-shaped ring (a second sealing piece 20) is radially arranged on a static disc of the static disc, so that the gas sealing of a low-pressure side is realized. Meanwhile, when the horizontal scroll compressor returns oil, the size of an oil return channel needs to be controlled to realize the effect of pressure reduction and throttling, and the phenomenon that high-pressure gas directly flows back to low pressure or medium pressure is avoided. In the technical scheme of the invention, a semi-annular oil guide channel 19-1 is formed in a plane sealing sheet between a cover body 1 and a static disc 2, lubricating oil in an oil storage cavity 17 flows to the oil inlet end of the plane sealing sheet through a cover body oil return channel 1-1, then generates loss along the axis when passing through the semi-annular oil guide channel 19-1 on the plane sealing sheet to realize throttling and pressure reduction, and flows into a support oil return channel from an oil outlet through the static disc to finally lubricate a main bearing.

In some embodiments, the first seal 19 is a sealing sheet structure, and is compressed between the first end face 1a and the second end face 2a by the cover body 1. The first sealing element is preferably arranged between the cover body and the static disc, so that the sealing disc can effectively seal the cover body and the static disc, the requirement on the design accuracy of the sealing disc can be lower due to the sealing between the two planes, and the sealing performance is improved.

In some embodiments, an oil storage cavity 17 and a cover body oil return channel 1-1 are formed in the cover body 1, a static plate oil return channel 2-1 is formed in the static plate 2, the first sealing element 19 is provided with an oil guide channel 19-1, the oil guide channel 19-1 comprises an oil inlet end 19a and an oil outlet end 19b, one end of the cover body oil return channel 1-1 is communicated with the oil storage cavity 17, the other end of the cover body oil return channel can be communicated with the oil inlet end 19a of the oil guide channel 19-1, and the oil outlet end 19b of the oil guide channel 19-1 can be communicated with the static plate oil return channel 2-1. The oil guide device further comprises an oil storage cavity on the cover body, an oil return channel of the cover body and an oil guide channel on the first sealing element, so that the separated oil after being exhausted on the cover body is effectively guided into the oil guide channel, and the oil is finally guided into the oil return channel of the static disc, so that parts such as a main bearing and the like in backpressure pressure are lubricated, and the oil can be throttled and decompressed after passing through the oil guide channel, so that the oil with proper pressure can be effectively pumped to the parts such as the main bearing and the like needing to be lubricated, the conditions such as backpressure rising and the like (for example, the condition that the abrasion between the movable disc and the static disc is intensified due to the backpressure rising so as to cause the ineffective compression, and the oil return from the high-pressure side of the compressor to the low-pressure side needs to be avoided during oil return), the oil return problem from the high-pressure side of the compressor to the low-pressure side is solved, and the oil return from the high-pressure side is continuously and effectively performed.

In some embodiments, the first sealing member 19 is an annular structure, and a groove structure is opened on an end surface of the first end surface 1a facing the cover body 1 to form the oil guiding channel 19-1, and the oil guiding channel 19-1 is an arc-shaped groove structure. The first sealing element is in a preferable structure form, can effectively cooperate with the static disc through the annular structure, and effectively seals the first end face of the radial outer side of the static disc, the end face of the first sealing element facing the cover body is provided with the oil guide channel with the groove, so that oil from the cover body can be received and guided to the oil return channel of the static disc through the oil guide channel, the oil guide channel of the arc-shaped groove structure meets the requirement of a transfer path, and the throttling and pressure reducing effects can also be met.

In some embodiments, still include support 4, quiet dish 2 still includes axially with third terminal surface 2b that second terminal surface 2a carried on the back mutually, support 4 with quiet dish 2 the third terminal surface 2b meets, just support 4 is inside still seted up support oil return passage 4-1, support oil return passage 4-1's one end can with quiet dish oil return passage 2-1's one end intercommunication, support oil return passage 4-1's the other end can be derived oil. The oil can be introduced from the static disc oil return channel through the arrangement of the support oil return channel on the support, and then the oil is finally introduced into the back pressure mechanisms such as the main bearing and the like so as to lubricate the moving friction part.

In some embodiments, the housing 8 includes a fourth end surface 8a at one axial end, the cover 1 further includes a fifth end surface 1b opposite to the fourth end surface 8a, and the fifth end surface 1b is not aligned with the first end surface 1a, and a gap is formed between the fifth end surface 1b and the fourth end surface 8 a. This is a further preferred form of the invention, namely the cover body and the housing are in a connected position, namely the cover body is connected with the static disc at the radial inner side and connected with the housing at the radial outer side to cover the housing; and the lid is used for being not parallel and level with the first terminal surface of lid with the relative fifth terminal surface of casing, and has the clearance between fifth terminal surface and the fourth terminal surface, can make not laminating between lid and the casing, and first sealing member needn't also can not reach between casing and the lid and seal the two promptly to when guaranteeing to seal between quiet dish and the lid, reduced the machining precision of first sealing member, reduce the processing cost, and sealing performance improves.

In some embodiments, a threaded connector 21 is further included, and the threaded connector 21 can penetrate the fifth end surface 1b of the cover 1 and the fourth end surface 8a of the housing 8 to fix the cover 1 to the housing 8. The cover body can be effectively fastened and fixed with the shell through the threaded connecting piece, so that the cover body is fixed on the shell, but the shell is not sealed with the cover body.

As shown in fig. 2, in some embodiments, a stationary disk seal groove 2-2 is formed on a radial outer circumferential surface of the stationary disk 2, the second seal 20 is disposed in the stationary disk seal groove 2-2, and the second seal 20 is attached to the radial inner circumferential surface of the housing 8. The first sealing element is arranged in a sealing groove of the static disc, and the second sealing element is arranged in the sealing groove of the static disc.

As shown in fig. 3, in some embodiments, a casing sealing groove 8-1 is formed on a radial inner circumferential surface of the casing 8, the second sealing element 20 is disposed in the casing sealing groove 8-1, and the second sealing element 20 is attached to a radial outer circumferential surface of the stationary disc 2. The second sealing element is arranged in a casing sealing groove formed in the inner circumferential surface of the casing in the radial direction, and can achieve an effective sealing effect between the static disc and the casing.

In some embodiments, the second seal 20 is in the form of an annular seal ring (i.e., an O-ring). The second sealing element is a preferable structure form of the second sealing element, and can play an effective sealing function on the circumferential circle of the shell and the static disc. Different from the first embodiment, the O-ring sealing groove of the second embodiment is arranged in the shell and is not arranged in the radial direction of the static disc. The static disc is subjected to complicated gas force, and the elimination of a static disc sealing groove is favorable for improving the strength of the static disc and reducing the stress and deformation of the static disc in a complicated force field.

The invention also provides a scroll compressor, which comprises the sealing structure of the scroll compressor. The technical scheme of the invention can realize the sealing of high pressure and low pressure, inside and outside of the compressor without providing high-precision requirements on the axial dimensions of the static disc, the bracket and the shell, simultaneously solves the throttling and pressure reducing problems of oil return in the compressor, has simple structure, reduces the manufacturing cost of the compressor and ensures the normal operation of the compressor.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be also considered as the protection scope of the present invention.

Claims

1. A sealing structure of a scroll compressor is characterized in that: the method comprises the following steps:

the cover comprises a cover body (1), a shell (8) and a static disc (2), wherein the cover body (1) comprises a first end face (1 a) positioned at one axial end of the cover body, the static disc (2) comprises a second end face (2 a) positioned at one axial end of the static disc, the first end face (1 a) is opposite to the second end face (2 a) so that the cover body (1) is covered on the static disc (2), the first end face (1 a) is not opposite to the shell (8), and a first sealing element (19) is arranged between the first end face (1 a) and the second end face (2 a);

the shell (8) is arranged on the radial outer side of the static disc (2), and a second sealing element (20) is arranged between the radial outer peripheral surface of the static disc (2) and the radial inner peripheral surface of the shell (8);

seted up oil storage chamber (17) and lid oil return passage (1-1) on lid (1), quiet set oil return passage (2-1) has been seted up on quiet set (2), be provided with on first sealing member (19) and lead oil passageway (19-1), it includes oil inlet end (19 a) and goes out oil end (19 b) to lead oil passageway (19-1), lid oil return passage (1-1) one end with oil storage chamber (17) intercommunication, the other end can with lead oil inlet end (19 a) intercommunication of oil passageway (19-1), lead oil passageway (19-1) go out oil end (19 b) can with quiet set oil return passage (2-1) intercommunication.

2. A seal structure of a scroll compressor according to claim 1, wherein:

the first seal (19) is of a sealing sheet construction and is compressed between the first end face (1 a) and the second end face (2 a) by the lid (1).

3. A seal structure of a scroll compressor according to claim 1, wherein:

the first sealing element (19) is of an annular structure, a groove structure is formed in the end face, facing the first end face (1 a) of the cover body (1), of the first sealing element to form the oil guide channel (19-1), and the oil guide channel (19-1) is of an arc-shaped groove structure.

4. A seal structure of a scroll compressor according to claim 1, wherein:

still include support (4), quiet dish (2) still include in the axial with third terminal surface (2 b) that second terminal surface (2 a) carried on the back mutually, support (4) with quiet dish (2) third terminal surface (2 b) meet, just support oil return passage (4-1) have still been seted up to support (4) inside, the one end of support oil return passage (4-1) can with the one end intercommunication of quiet dish oil return passage (2-1), the other end of support oil return passage (4-1) can be derived oil.

5. A seal structure of a scroll compressor according to any one of claims 1 to 4, wherein:

casing (8) is including fourth terminal surface (8 a) that is located axial one end, lid (1) still include with fifth terminal surface (1 b) that fourth terminal surface (8 a) is relative, just fifth terminal surface (1 b) with first terminal surface (1 a) is not neat, just fifth terminal surface (1 b) with have the clearance between fourth terminal surface (8 a).

6. A seal structure of a scroll compressor according to claim 5, wherein:

further comprising a threaded connection (21), said threaded connection (21) being able to penetrate the fifth end face (1 b) of the cover (1) and the fourth end face (8 a) of the casing (8) to fix the cover (1) to the casing (8).

7. A sealing structure of a scroll compressor according to any one of claims 1 to 4, wherein:

a static disc sealing groove (2-2) is formed in the radial outer peripheral surface of the static disc (2), the second sealing element (20) is arranged in the static disc sealing groove (2-2), and the second sealing element (20) is attached to the radial inner peripheral surface of the shell (8).

8. A seal structure of a scroll compressor according to any one of claims 1 to 4, wherein:

a shell sealing groove (8-1) is formed in the radial inner circumferential surface of the shell (8), the second sealing element (20) is arranged in the shell sealing groove (8-1), and the second sealing element (20) is attached to the radial outer circumferential surface of the static disc (2).

9. A seal structure of a scroll compressor according to any one of claims 1 to 4, wherein:

the second sealing element (20) is in the structure of an annular sealing ring.

10. A scroll compressor characterized by: a seal structure including the scroll compressor of any one of claims 1-9.

11. An air conditioner, characterized in that: comprising the scroll compressor of claim 10.