CN209129861U - Eccentric sleeve, oil return device and scroll compressor - Google Patents
Eccentric sleeve, oil return device and scroll compressor Download PDFInfo
- Publication number
- CN209129861U CN209129861U CN201821850386.5U CN201821850386U CN209129861U CN 209129861 U CN209129861 U CN 209129861U CN 201821850386 U CN201821850386 U CN 201821850386U CN 209129861 U CN209129861 U CN 209129861U
- Authority
- CN
- China
- Prior art keywords
- oil
- hole
- eccentric bushing
- recovery tank
- oil return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011084 recovery Methods 0.000 claims description 53
- 239000004519 grease Substances 0.000 abstract description 24
- 239000012535 impurity Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 22
- 230000017525 heat dissipation Effects 0.000 abstract description 14
- 238000009434 installation Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 55
- 239000000314 lubricant Substances 0.000 description 13
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Compressor (AREA)
Abstract
The utility model discloses an eccentric bushing, oil returning device and scroll compressor relates to compressor technical field, has solved among the prior art because of the eccentric bushing through-hole and terminal surface appear yellow oil dirt and impurity and influence the technical problem of compressor heat dissipation and lubricated effect. The utility model discloses an eccentric cover includes the installation department, has the through-hole on the installation department, the bent axle assemble in the through-hole and with the through-hole between form the clearance, still be provided with at least one oil return structure on the installation department to at least one oil return structure and clearance intercommunication. The utility model discloses a yellow grease and impurity on eccentric cover installation department are attached to in the clearance discharge between at least one oil return structure of eccentric cover accessible and/or bent axle and the through-hole to can improve oil return, the lubricated effect of compressor, improve the life of compressor.
Description
Technical field
The utility model relates to Compressor Technology field more particularly to a kind of eccentric bushings, oil return apparatus and screw compressor.
Background technique
Screw compressor since its is small in size, it is high-efficient the features such as type of compressor preferred in present passenger car,
And eccentric bushing is the existing common flexible sealing structure of automobile screw compressor.Fig. 1 show eccentric bushing in the prior art with
Structural schematic diagram after crankshaft assembly；Fig. 2 shows the top views of eccentric bushing in the prior art；Fig. 3 shows the prior art
The cross-sectional view of one preferred embodiment of turbo-compressor.As shown in FIG. 1 to 3, between eccentric bushing and crankshaft are in the prior art
Gap cooperation, the unlubricated channel on eccentric bushing are only capable of reaching lubrication, heat dissipation and other effects by the fit clearance of the two.
However, compressor operating for a period of time after, due to generating high temperature because of high speed rotation between eccentric bushing and crankshaft, make
It obtains eccentric bushing through-hole and yellow grease and impurity occurs in end face, oil circuit circulation is caused to have some setbacks.Therefore, the prior art is in bias
When set is rotated with crankshaft high-speed, the fit clearance for only relying on eccentric bushing and crankshaft is unable to reach heat dissipation and lubricant effect well,
Also the impurity of accumulation can not be discharged in time, to reduce the service life of compressor.
Therefore, it is badly in need of improving eccentric bushing in the prior art, improves the lubricant effect of compressor.
Utility model content
One of purpose of the utility model is to propose a kind of eccentric bushing, is solved in the prior art because of eccentric bushing through-hole
And there is yellow grease and impurity and influences compressor heat dissipation and the technical issues of lubricant effect in end face.The utility model is preferred
Many technical effects elaboration as detailed below that technical solution can be generated.
To achieve the above object, the utility model provides following technical scheme:
The eccentric bushing of the utility model includes mounting portion, has through-hole on the mounting portion, and crankshaft is assemblied in the through-hole
In and between the through-hole form gap, at least one oil-returning structure, and described at least one are additionally provided on the mounting portion
A oil-returning structure is connected to the gap.
According to a preferred embodiment, at least one described oil-returning structure include the first oil return bowl assembly, described first
Oil return bowl assembly is located on the wall surface of the through-hole and extends to another end face from an end face of the through-hole.
According to a preferred embodiment, the first oil return bowl assembly includes at least one first oil-recovery tank.
According to a preferred embodiment, the eccentric bushing further includes fan-shaped surface, and the fan-shaped surface is located at the installation
It is integrally formed on the outside of the end face in portion and with the end face.
According to a preferred embodiment, first oil-recovery tank is located at the through-hole wall surface opposite with the fan-shaped surface
On.
According to a preferred embodiment, at least one described oil-returning structure further includes the second oil return bowl assembly, and described
Two oil return bowl assemblies are located on the end face of the mounting portion.
According to a preferred embodiment, the second oil return bowl assembly includes at least one second oil-recovery tank.
According to a preferred embodiment, second oil-recovery tank is extended to from the end face far from the side of the through-hole
The end face is close to the side of the through-hole.
According to a preferred embodiment, second oil-recovery tank is located on the end face connecting with fan-shaped surface.According to one
The depth of preferred embodiment, first oil-recovery tank and/or second oil-recovery tank is 0.1~10mm.
According to a preferred embodiment, the cross section of first oil-recovery tank and/or second oil-recovery tank is arc
One of structure or polygonized structure.
The another aspect of the utility model additionally provides a kind of oil return apparatus.The oil return apparatus includes that the utility model is appointed
At least one oil-returning structure on eccentric bushing described in one technical solution.
The another aspect of the utility model additionally provides a kind of screw compressor.The screw compressor includes that this is practical new
Oil return apparatus described in any technical solution of type.
Eccentric bushing provided by the utility model at least has following advantageous effects:
At least one oil-returning structure, and at least one oil return knot is arranged in the utility model on the mounting portion of eccentric bushing
The gap formed between structure and crankshaft and through-hole is connected to, so that appearing in the yellow on eccentric bushing mounting portion in compressor operation
Grease and impurity can be discharged by the gap between at least one oil-returning structure and/or crankshaft and through-hole, avoid crankshaft with
The gap formed between through-hole is too small to cause the attachment of yellow grease and impurity to be deposited on eccentric bushing, to influence compressor heat dissipation
And the problem of lubricant effect.
The eccentric bushing of the utility model can reduce eccentric bushing installation by the way that at least one oil-returning structure is arranged on mounting portion
Yellow grease and impurity in portion, to solve in the prior art because yellow grease and miscellaneous occur in eccentric bushing through-hole and end face
Matter and influence compressor heat dissipation and the technical issues of lubricant effect, returning for compressor is can be improved in the eccentric bushing of the utility model
Oil, lubricant effect, to improve the service life of compressor.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram after eccentric bushing in the prior art and crankshaft assembly；
Fig. 2 is the top view of eccentric bushing in the prior art；
Fig. 3 is the cross-sectional view of one preferred embodiment of prior art turbo-compressor；
Fig. 4 is the structural schematic diagram of one preferred embodiment of the utility model eccentric bushing；
Fig. 5 is the top view of one preferred embodiment of the utility model eccentric bushing；
Fig. 6 is the cross-sectional view of one preferred embodiment of the utility model turbo-compressor.
1- eccentric bushing in figure；101- mounting portion；102- through-hole；The end face 103-；104- fan-shaped surface；The first oil-recovery tank of 105-；
The second oil-recovery tank of 106-；2- crankshaft；3- housing unit；4- front cover component；The quiet disk component of 5-；6- dynamic disk component；7- bracket component；
8- rotor assembly；9- stator module；10- air entry；11- exhaust outlet.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Embodiment 1
It is described in detail in conjunction with eccentric bushing of the Fig. 4 and Fig. 5 to the present embodiment.
The eccentric bushing of the present embodiment includes mounting portion 101, has through-hole 102 on mounting portion 101, as shown in Fig. 4 or Fig. 5.
Crankshaft 2 is assemblied in through-hole 102 and forms gap between through-hole 102, at least one oil return knot is additionally provided on mounting portion 101
Structure, and at least one oil-returning structure is connected to gap.
At least one oil-returning structure, and at least one oil return is arranged in the present embodiment on the mounting portion 101 of eccentric bushing
The gap formed between structure and crankshaft 2 and through-hole 102 is connected to, so that appearing in mounting portion through-hole 102 in compressor operation
And yellow grease on end face 103 and impurity can by least one oil-returning structure and/or crankshaft 2 and through-hole 102 it
Between gap discharge, avoid the gap formed between crankshaft 2 and through-hole 102 it is too small cause yellow grease adhere to and impurity be deposited in
On eccentric bushing, thus the problem of influencing compressor heat dissipation and lubricant effect.
It is logical can to reduce eccentric bushing by the way that at least one oil-returning structure is arranged on mounting portion 101 for the eccentric bushing of the present embodiment
Yellow grease and impurity on hole 102 and end face 103, thus solve in the prior art because of eccentric bushing inner via hole 102 and
The technical issues of end face 103 yellow grease and impurity occurs and influences heat dissipation and lubricant effect, the eccentric bushing of the utility model can
To improve oil return, the lubricant effect of compressor, to improve the service life of compressor.
According to a preferred embodiment, at least one oil-returning structure includes the first oil return bowl assembly, the first oil-recovery tank group
Part is located on the wall surface of through-hole 102 and extends to another end face from an end face of through-hole 102.That is the first oil return bowl assembly
Length is suitable with the height of through-hole 102.Preferably, the first oil return bowl assembly includes at least one first oil-recovery tank 105, such as Fig. 4
Or shown in Fig. 5.
In the prior art, crankshaft 2 is assemblied in through-hole 102 and forms gap between through-hole 102, however, the seam in the gap
Gap is too small, causes the yellow grease generated in compressor operation and impurity not to be discharged in time, to be attached to eccentric bushing
In through-hole 102 or at end face 103.The first oil return bowl assembly is arranged in the present embodiment optimal technical scheme on the wall surface of through-hole 102,
And the first oil return bowl assembly extends to another end face from an end face of through-hole 102, so as to make to be attached in through-hole 102
Or yellow grease at end face 103 and impurity are discharged in time by the first oil return bowl assembly, avoid the heat dissipation for influencing compressor and
Lubricant effect.
First oil return bowl assembly of the present embodiment optimal technical scheme includes at least one first oil-recovery tank 105.Preferably,
First oil return bowl assembly includes two or more first oil-recovery tanks 105, and multiple first oil-recovery tanks 105 are spaced each other and set
It sets.The present embodiment optimal technical scheme includes at least one first oil-recovery tank 105, will can be generated in compressor operation in time
Yellow grease and impurity discharge, avoid it from being deposited in the heat dissipation and lubrication on the mounting portion of eccentric bushing 101 and influencing compressor
Effect.
According to a preferred embodiment, mounting portion 101 further includes end face 103, and end face 103 is located at the outside of through-hole 102
And be integrally formed with through-hole 102, as shown in Fig. 4 or Fig. 5.
According to a preferred embodiment, the eccentric bushing of the present embodiment optimal technical scheme further includes fan-shaped surface 104.It is preferred that
, fan-shaped surface 104 is located at 103 outside of end face of mounting portion 101 and is integrally formed with end face 103, as shown in Fig. 4 or Fig. 5.It is preferred that
, the radian of fan-shaped surface 104 is 120 °.The radian of fan-shaped surface 104 could also say that the angle of fan-shaped region is 120 °.
According to a preferred embodiment, the first oil-recovery tank 105 is located on the wall surface opposite with fan-shaped surface 104 of through-hole 102.
That is the first oil-recovery tank 105 is located at through-hole 102 and is not connected with having on the wall surface of fan-shaped surface 104.
Since the eccentricity generated by high speed rotation is influenced, the yellow grease that compressor generates is mostly present in through-hole
102 are located on the wall surface on 104 opposite of fan-shaped surface, i.e., the position of yellow grease and fan-shaped surface 104 are opposite, therefore, by the first oil return
Slot 105 is set on the wall surface opposite with fan-shaped surface 104 of through-hole 102, and the grease generated can be made to be discharged in time, avoids eccentric bushing logical
Adhere to yellow grease and accumulation impurity at hole 102, to make short axle end (close to one end of off-centre operation) and the through-hole 102 of crankshaft 2
It preferably radiates at cooperation.
According to a preferred embodiment, at least one oil-returning structure further includes the second oil return bowl assembly, the second oil-recovery tank
Component is located on the end face 103 of mounting portion 101.Preferably, the second oil return bowl assembly includes at least one second oil-recovery tank 106,
As shown in Fig. 4 or Fig. 5.It is furthermore preferred that the central axes of the second oil-recovery tank 106 alignment through-hole 102, that is to say the second oil-recovery tank 106
On the extended line of 102 diameter of through-hole.
According to a preferred embodiment, the second oil-recovery tank 106 extends to end far from the side of through-hole 102 from end face 103
Face 103 is close to the side of through-hole 102.It that is to say, the second oil-recovery tank 106 is extended to from end face 103 close to the side of fan-shaped surface 104
End face 103 is close to the side of through-hole 102, as shown in Fig. 4 or Fig. 5.
The second oil return bowl assembly is arranged in the present embodiment optimal technical scheme on the end face of mounting portion 101 103, so as to make
It is attached between the yellow grease at end face 103 and impurity is discharged between crankshaft 2 and through-hole 102 by the second oil return bowl assembly and formed
In gap, then pass through the first oil return bowl assembly and/or the gap and grease and impurity are discharged, avoids the heat dissipation and profit that influence compressor
Sliding effect.
Second oil return bowl assembly of the present embodiment optimal technical scheme includes at least one second oil-recovery tank 106.Preferably,
Second oil return bowl assembly includes two or more second oil-recovery tanks 106, and multiple second oil-recovery tanks 106 are spaced each other and set
It sets.The present embodiment optimal technical scheme includes at least one second oil-recovery tank 106, will can be generated in compressor operation in time
Yellow grease and impurity discharge, avoid its be deposited on eccentric bushing influence compressor heat dissipation and lubricant effect.
According to a preferred embodiment, the second oil-recovery tank 106 is located on the end face 103 connecting with fan-shaped surface 104.First
Positional relationship between oil-recovery tank 105 and the second oil-recovery tank 106 is not limited to Fig. 4 and a kind of situation shown in fig. 5, the second oil-recovery tank
It 106 position can also be depending on the oil return of eccentric bushing and heat dispersal situations.
According to a preferred embodiment, the depth of the first oil-recovery tank 105 and/or the second oil-recovery tank 106 is 0.1~
10mm.Preferably, the depth of the first oil-recovery tank 105 and/or the second oil-recovery tank 106 is that 0.1~10mm can make to be attached to through-hole
The 102 interior and yellow greases on end face 103 and impurity are discharged in time, to achieve the effect that oil return, heat dissipation.
According to a preferred embodiment, the cross section of the first oil-recovery tank 105 and/or the second oil-recovery tank 106 is arc knot
One of structure or polygonized structure.Preferably, the cross section of the first oil-recovery tank 105 and/or the second oil-recovery tank 106 be it is round,
Semicircle, ellipse or rectangle etc. can reach the effect of oil return, heat dissipation.
Embodiment 2
It is described in detail in conjunction with oil return apparatus and screw compressor of the Fig. 6 to the present embodiment.
The oil return apparatus of the present embodiment, at least one oil return knot on the eccentric bushing including any technical solution of the present embodiment
Structure.At least one oil-returning structure on the present embodiment eccentric bushing can make returning at 7 cooperation of eccentric bushing 1, crankshaft 2 and bracket component
Oil and lubrication are more smooth, to improve the oil return of compressor complete machine, lubricant effect by oil circulation, reduce the attached of yellow grease
Amount, improve the service life of compressor.
According to a preferred embodiment, the lubricating loop of the present embodiment optimal technical scheme is needed by such as lower component:
As shown in fig. 6, during the operation of the compressor, low-pressure gas enters suction chamber, suction chamber by the air entry 10 of suction pipe
Become compression chamber when closing, compressed high pressure gas is wherein mixed with lubricating oil, and lubricating oil enters high by vent ports 11
It presses buffer area (that is to say front cover component 4), it will be under lubrication oil filtration using strainer, the gas and oil separating plant on front cover component 4
Come, and high pressure gas further absorbs motor and distributes heat, after exported by exhaust pipe；The lubricating oil filtered down passes through quiet
Oilhole, the inner walls oil guide plate of disk component 5 lubricate sound disk, housing cavity, then pass through the oil return of bracket component 7
Slot enters crankshaft 2, eccentric bushing 1 until forming the lubricating loop of complete machine.
According to a preferred embodiment, above-mentioned lubricating loop is removed, in order to balance the gas born on dynamic disk component 6 effect
Power is also provided with back pressure cavity between dynamic disk component 6 and bracket component 7.Back pressure cavity passes through back pressure hole and centre on dynamic disk component 6
Compression chamber communicates, therefore the gas pressure of back pressure cavity is a certain intermediate pressure for being higher than pressure of inspiration(Pi) lower than pressure at expulsion, hereinto
Between under the action of pressure, movable orbiting scroll is contacted along axial remain with fixed scroll, maintains axial seal.Since through-hole 102 returns
Oil groove both ends import refrigerant, oil stream are moved relatively fewer, therefore also add oil-recovery tank in side simultaneously and are connected with back pressure cavity (refrigerant, oil
Amount of flow is relatively large), though oily flavescence can still be made by adding the eccentric bushing 1 of oil-recovery tank and the high temperature of crankshaft 2 when rotating at high speed,
Refrigeration oil can more preferably be recycled by oil circuit, be prevented due to the attachment of the more grease of through-hole 102 caused by radiating and lubricating, simultaneously
Understand some subtle impurity to be discharged by oil circuit, reduces the impurity accumulated at 1 through-hole 102 of eccentric bushing, make entire oil circuit, gas
Road is all more smooth, to improve the service life of compressor.
The screw compressor of the present embodiment, the oil return apparatus including any technical solution of the present embodiment.
Referring again to Fig. 6, the screw compressor of the present embodiment optimal technical scheme further include housing unit 3 and be located at shell
Rotor assembly 8 and stator module 9 in body component 3.
The screw compressor of the present embodiment is optimized by the structure to eccentric bushing, improves main zero, compressor
The lubricant effect of part (i.e. dynamic and static scroll plate, bracket etc.) reduces impurity accumulation and grease attachment, improves the oil return of complete machine
Access improves the service life of compressor to reduce the abrasion of part.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (13)
1. a kind of eccentric bushing, which is characterized in that including mounting portion (101), there are through-hole (102) on the mounting portion (101), it is bent
Axis (2) is assemblied in the through-hole (102) and is formed between the through-hole (102) gap, also sets up on the mounting portion (101)
There is at least one oil-returning structure, and at least one described oil-returning structure is connected to the gap.
2. eccentric bushing according to claim 1, which is characterized in that at least one described oil-returning structure includes the first oil-recovery tank
Component, the first oil return bowl assembly are located on the wall surface of the through-hole (102) and prolong from an end face of the through-hole (102)
Extend to another end face.
3. eccentric bushing according to claim 2, which is characterized in that the first oil return bowl assembly include at least one first
Oil-recovery tank (105).
4. eccentric bushing according to claim 3, which is characterized in that it further include fan-shaped surface (104), the fan-shaped surface (104)
It is integrally formed on the outside of the end face (103) of the mounting portion (101) and with the end face (103).
5. eccentric bushing according to claim 4, which is characterized in that first oil-recovery tank (105) is located at the through-hole
(102) and on the fan-shaped surface (104) opposite wall surface.
6. eccentric bushing according to any one of claims 2 to 5, which is characterized in that at least one described oil-returning structure also wraps
The second oil return bowl assembly is included, the second oil return bowl assembly is located on the end face (103) of the mounting portion (101).
7. eccentric bushing according to claim 6, which is characterized in that the second oil return bowl assembly include at least one second
Oil-recovery tank (106).
8. eccentric bushing according to claim 7, which is characterized in that second oil-recovery tank (106) is from the end face (103)
Side far from the through-hole (102) extends to the side of the end face (103) close to the through-hole (102).
9. eccentric bushing according to claim 8, which is characterized in that second oil-recovery tank (106) is located at and fan-shaped surface
(104) on the end face (103) connected.
10. eccentric bushing according to claim 7, which is characterized in that first oil-recovery tank (105) and/or described second
The depth of oil-recovery tank (106) is 0.1~10mm.
11. eccentric bushing according to claim 7, which is characterized in that first oil-recovery tank (105) and/or described second
The cross section of oil-recovery tank (106) is one of arcuate structure or polygonized structure.
12. a kind of oil return apparatus, which is characterized in that including at least one on eccentric bushing described in one of claim 1 to 11
Oil-returning structure.
13. a kind of screw compressor, which is characterized in that including the oil return apparatus described in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850386.5U CN209129861U (en) | 2018-11-09 | 2018-11-09 | Eccentric sleeve, oil return device and scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850386.5U CN209129861U (en) | 2018-11-09 | 2018-11-09 | Eccentric sleeve, oil return device and scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129861U true CN209129861U (en) | 2019-07-19 |
Family
ID=67244486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821850386.5U Active CN209129861U (en) | 2018-11-09 | 2018-11-09 | Eccentric sleeve, oil return device and scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209129861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185152A (en) * | 2018-11-09 | 2019-01-11 | 珠海凌达压缩机有限公司 | Eccentric sleeve, oil return device and scroll compressor |
-
2018
- 2018-11-09 CN CN201821850386.5U patent/CN209129861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185152A (en) * | 2018-11-09 | 2019-01-11 | 珠海凌达压缩机有限公司 | Eccentric sleeve, oil return device and scroll compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101004173A (en) | Rolling piston type compressor with no reservoir | |
| US20050129559A1 (en) | Horizontal rotary compressor | |
| CN1097243A (en) | Horizontai rotary compressor | |
| CN209129861U (en) | Eccentric sleeve, oil return device and scroll compressor | |
| CN106286223B (en) | A kind of oil-way lubrication system and compressor | |
| CN2861559Y (en) | Horizontal type rotary compressor | |
| CN201031716Y (en) | Engine oil centrifugal filtration device of motorcycle engine | |
| CN114412781B (en) | Scroll compressor and air conditioner | |
| CN109185152A (en) | Eccentric sleeve, oil return device and scroll compressor | |
| CN110925211A (en) | Low-backpressure rolling rotor type compressor and air conditioner | |
| CN209129847U (en) | eccentric sleeve and scroll compressor | |
| CN211116581U (en) | Compressor for vehicle | |
| CN213871050U (en) | Transmission housing with lubricating function | |
| CN207333191U (en) | Slide plate lubrication system and the rotary compressor with the slide plate lubrication system | |
| CN202325737U (en) | Lubricating-oil circulating device for engine | |
| CN101021172A (en) | Engine oil secondary filtering device for engine | |
| CN207393477U (en) | A kind of Horizontai rotary compressor | |
| CN201891601U (en) | Internal meshing gear oil pump | |
| CN204693006U (en) | Oil pump | |
| CN208281187U (en) | Pump body subassembly and compressor and air conditioner | |
| CN102121409A (en) | Lubricating oil channel for right crankcase of engine | |
| CN106438287A (en) | Air pump capable of changing lubricating mode | |
| CN214698328U (en) | Low-oil-quantity rotary compressor | |
| CN215805161U (en) | Screw air compressor and oil seal device thereof | |
| CN202645667U (en) | Mounting structure of engine oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |