CN107503939A - A kind of twin-stage scroll compressor with pressure difference oil supply structure - Google Patents
A kind of twin-stage scroll compressor with pressure difference oil supply structure Download PDFInfo
- Publication number
- CN107503939A CN107503939A CN201710928956.1A CN201710928956A CN107503939A CN 107503939 A CN107503939 A CN 107503939A CN 201710928956 A CN201710928956 A CN 201710928956A CN 107503939 A CN107503939 A CN 107503939A
- Authority
- CN
- China
- Prior art keywords
- chamber
- bearings
- vortex
- pressure difference
- twin
- 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 18
- 239000010687 lubricating oil Substances 0.000 claims abstract description 16
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000446 fuel Substances 0.000 abstract description 9
- 230000003031 feeding effect Effects 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
Abstract
The invention discloses a kind of twin-stage scroll compressor with pressure difference oil supply structure, include housing, a driving bent axle anyhow is provided with housing, the middle part of driving bent axle is provided with a through hole I anyhow, one end of driving bent axle is provided with scroll component I, the other end is provided with scroll component II, scroll component I includes bearings I, determine vortex I, dynamic vortex I, scroll component II includes bearings II, determine vortex II, dynamic vortex II, the outside of determine vortex II is provided with the high and low voltage isolation plate for separating housing cavity room, the both ends of housing encapsulate the chamber to form a closing by end cap, high and low voltage isolation plate separates chamber for chamber I and chamber II, air intake duct and blast pipe have been respectively communicated with chamber I and chamber II.The present invention realizes the supply of lubricating oil by pressure difference, on the premise of avoiding scroll component from being immersed in inside lubricating oil, realizes the fuel feeding of double-level scroll compressor；The not compressed machine rotating speed of its fuel system influences, fuel feeding effect stability.
Description
Technical field：
The present invention relates to screw compressor field, relates generally to a kind of twin-stage scroll compressor with pressure difference oil supply structure.
Background technology：
Lubricating oil in screw compressor mainly plays lubrication, sealing, cleaning, radiating, anti-rust action, just as the blood in human body,
Insufficient supply has fatal danger to compressor.Fuel feeding inside usual compressor is completed by driving bent axle, and driving is bent
One end of axle is directly or indirectly in the lubricating oil, by driving eccentric oilhole inside bent axle or small-sized oil pump to be used as driving
Power, complete supply of the lubricating oil on each parts and friction pair.
For twin-stage scroll compressor, particularly drive in the case that the both ends of bent axle respectively drive a set of scroll component,
The characteristic that can not be immersed in due to scroll component in lubricating oil, cause traditional fuel system not realize, therefore how to ensure this
Each parts sufficient lubrication of class compressor, it is an insoluble problem.
The content of the invention：
A kind of the defects of the object of the invention is exactly to make up prior art, there is provided twin-stage vortex with pressure difference oil supply structure
Compressor, two sets of scroll components mainly are utilized, in compressor internal structure one higher than pressure of inspiration(Pi) and less than in pressure at expulsion
Between pressure chamber, supply of the lubricating oil on each parts is then ensured by pressure difference.
The present invention is achieved by the following technical solutions：
A kind of twin-stage scroll compressor with pressure difference oil supply structure, includes housing（3）, the housing（3）Inside it is provided with one
Anyhow driving bent axle (7), it is characterised in that：The driving bent axle（7）Middle part be provided with a through hole I anyhow（28）, it is described
Drive bent axle（7）One end scroll component I is installed, the other end is provided with scroll component II, and the scroll component I includes axle
Hold support I（5）, determine vortex I（2）, dynamic vortex I（4）, the scroll component II includes bearings II（10）, determine vortex II
（12）, dynamic vortex II（11）, the determine vortex II（12）Outside high and low voltage isolation for separating housing cavity room is installed
Plate（13）, the both ends of the housing encapsulate the chamber to form a closing, the high and low voltage isolation plate by end cap（13）By chamber
Room is separated as chamber I（20）With chamber II（21）, the chamber I（20）With chamber II（21）On be respectively communicated with air intake duct（19）
And blast pipe（17）；
The bearings I（5）, dynamic vortex I（4）With driving bent axle（7）Between formed chamber IV（25）, the bearings II
（10）, dynamic vortex II（11）With driving bent axle（7）Between formed chamber III（24）, the through hole I（28）One end and chamber IV
（25）Connection, the other end and chamber III（24）Connection；
The chamber III（24）Corresponding bearings II（10）It is provided with a vertical hole II（26）, the hole II（26）One
End and chamber III（24）Connection, the other end and chamber I（20）Connection.
Described bearings I（5）Outside determine vortex I is installed（2）, the bearings I（5）End be provided with
Positioned at determine vortex I（2）With bearings I（5）Between and with determine vortex I（2）The dynamic vortex I of cooperation（4）, the dynamic vortex I（4）
With bearings I（5）Between anti-rotation mechanism I is installed（6）.
Described bearing supporting I（5）With dynamic vortex I（4）A seal groove is provided with the end face of contact（23）, seal groove（23）
Inside there is a sealing ring (17).
The sealing ring (17) is radially provided with opening (22) so that chamber IV（25）With the suction muffler of scroll component I（27）
Communicate, therefore the pressure in chamber (IV) is more than pressure of inspiration(Pi) less than the pressure in chamber (I), is lubricated in the presence of pressure difference
Oil can be ceaselessly via bearings I（5）Hole (II) and bent axle hole (I) flow into chamber (IV), realize that compressor respectively rubs
The lubrication of secondary scroll component.
Described bearings II（10）Outside determine vortex II is installed（12）, the bearings II（10）End
It is provided with and is located at determine vortex II（12）With bearings II（10）Between and with determine vortex II（12）The dynamic vortex II of cooperation（11）,
The dynamic vortex II（11）With bearings II（10）Between anti-rotation mechanism II is installed（16）.
Described chamber I（20）Bottom be provided with lubricating oil（19）.
It is an advantage of the invention that：
1st, the supply of lubricating oil is realized by pressure difference, on the premise of avoiding scroll component from being immersed in inside lubricating oil, is realized
The fuel feeding of double-level scroll compressor；
2nd, compared with traditional fuel system, the not compressed machine rotating speed of the fuel system influences, fuel feeding effect stability；
3rd, the structure can be compressed the circulation of machine interior oil and compressor entirety oil spitting amount by the opening size on sealing ring
Control.
Brief description of the drawings：
Fig. 1 is the structural representation of the present invention.
Fig. 2 is middle (center) bearing of the present invention supporting I and the structural representation of the connecting end surface of dynamic vortex I.
Fig. 3 is the structural representation of sealing ring in the present invention.
In figure：1st, end cap I 2, determine vortex I 3, housing 4, dynamic vortex I 5, bearings I, 6, anti-autobiography mechanism I 7, drive
Dynamic crankshaft 8, motor stator 9, motor rotor 10, bearings II 11, dynamic vortex II 12, determine vortex II 13, height
Low pressure division board 14, blast pipe 15, end cap II 16, anti-autobiography mechanism II 17, sealing ring 18, the lubricating oil of air intake duct 19
20th, chamber I 21, chamber II 22, opening 23, seal groove 24, chamber III 25, chamber IV 26, hole II 27, suction muffler
28th, hole I.
Embodiment：
Referring to accompanying drawing.
A kind of twin-stage scroll compressor with pressure difference oil supply structure, include housing 3, one is provided with the housing 3
Anyhow driving bent axle 7, the middle part of the driving bent axle 7 are provided with a through hole I 28 anyhow, one end peace of the driving bent axle 7
Equipped with scroll component I, the other end is provided with scroll component II, the scroll component I include bearings I 5, determine vortex I 2,
Dynamic vortex I 4, the scroll component II include bearings II 10, determine vortex II 12, dynamic vortex II 11, the determine vortex II
12 outside is provided with the high and low voltage isolation plate 13 for separating housing cavity room, and the both ends of the housing encapsulate shape by end cap
Into the chamber of a closing, the high and low voltage isolation plate 13 separates chamber for chamber I 20 and chamber II 21, the chamber I 20
With air intake duct 19 and blast pipe 17 have been respectively communicated with chamber II 21；
The determine vortex I 2 is fixed in bearings I 5, and is matched with dynamic vortex I 4 and be combined into scroll component I, scroll component I
Air entry is joined directly together with the air intake duct 18 through housing 3；
The determine vortex II 12 is fixed in bearings II 10 and is engaged to form scroll component II with dynamic vortex II 11.It is vortexed
The exhaust outlet of component II is connected by high and low voltage isolation plate 13 with the compressor internal chamber II 21, chamber II 21 and blast pipe 14
Directly connect；
During compressor operation, gas is directly entered scroll component I by the air intake duct 18 on housing 3, after first compression
Be discharged into compressor internal chamber I 20, then via after the second-compressed of scroll component II enter compressor inside chamber II 21, most
Compressor is discharged by blast pipe 14；
There is a through hole I 28 inside the driving bent axle 7, one end is connected with dynamic vortex II 11, and the other end is connected with dynamic vortex I 4；
The bearings II 10, dynamic vortex II 11 and driving bent axle 7 form a chamber III 24, are provided with bearings II 10
One hole II 26, the one end of hole II 26 are located in the chamber III 24, and the other end is located at chamber I 20, is immersed in lubricating oil 19.
The bearings I 5, dynamic vortex I 4 and driving bent axle 7 form a chamber IV 25, and the chamber IV 25 passes through song
Hole II 26 on hole I 28 and bearings II 10 and the UNICOM of chamber I 20 inside axle 7；
A seal groove 23 is provided with the end face that bearing supporting I 5 contacts with dynamic vortex I 4, there is a sealing ring 17 in seal groove 23.Institute
State sealing ring 17 and be radially provided with opening 22 so that chamber IV 25 communicates with the suction muffler 27 of scroll component I.
The structure, an oil passage is constructed, starting point is the oilhole II 26 in bearings II 10, bent via driving
Through hole I 28 inside axle 7 is reached 17 at the sealing ring of bearings I 5, and pressure of inspiration(Pi) is in the outside of sealing ring 17 and passes through sealing ring
Opening on 17 is communicated, and is herein pressure minimum point, and lubricating oil is in chamber I 20, and pressure is higher than pressure of inspiration(Pi), therefore is pressing
Under power effect, lubricating oil passes through the path, realizes the supply of lubricating oil, and by the size of opening 22 on sealing ring 17, can
Realize the control of interior oil internal circulating load.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of twin-stage scroll compressor with pressure difference oil supply structure, includes housing（3）, the housing（3）Inside it is provided with
One driving bent axle (7) anyhow, it is characterised in that：The driving bent axle（7）Middle part be provided with a through hole I anyhow（28）, institute
State driving bent axle（7）One end scroll component I is installed, the other end is provided with scroll component II, and the scroll component I includes
Bearings I（5）, determine vortex I（2）, dynamic vortex I（4）, the scroll component II includes bearings II（10）, determine vortex
Ⅱ（12）, dynamic vortex II（11）, the determine vortex II（12）Outside be provided with for separate the high-low pressure of housing cavity room every
From plate（13）, the both ends of the housing encapsulate the chamber to form a closing, the high and low voltage isolation plate by end cap（13）Will
Chamber is separated as chamber I（20）With chamber II（21）, the chamber I（20）With chamber II（21）On be respectively communicated with air intake duct
（19）And blast pipe（17）；
The bearings I（5）, dynamic vortex I（4）With driving bent axle（7）Between formed chamber IV（25）, the bearings II
（10）, dynamic vortex II（11）With driving bent axle（7）Between formed chamber III（24）, the through hole I（28）One end and chamber IV
（25）Connection, the other end and chamber III（24）Connection；
The chamber III（24）Corresponding bearings II（10）It is provided with a vertical hole II（26）, the hole II（26）One
End and chamber III（24）Connection, the other end and chamber I（20）Connection.
2. the twin-stage scroll compressor according to claim 1 with pressure difference oil supply structure, it is characterised in that：Described
Bearings I（5）Outside determine vortex I is installed（2）, the bearings I（5）End be provided with positioned at determine vortex I（2）
With bearings I（5）Between and with determine vortex I（2）The dynamic vortex I of cooperation（4）, the dynamic vortex I（4）With bearings I（5）
Between anti-rotation mechanism I is installed（6）.
3. the twin-stage scroll compressor according to claim 1 with pressure difference oil supply structure, it is characterised in that：Described
Bearing supporting I（5）With dynamic vortex I（4）A seal groove is provided with the end face of contact（23）, seal groove（23）Inside there is a sealing ring
(17)。
4. the twin-stage scroll compressor according to claim 3 with pressure difference oil supply structure, it is characterised in that：It is described close
Seal (17) is radially provided with opening (22) so that chamber IV（25）With the suction muffler of scroll component I（27）Communicate.
5. the twin-stage scroll compressor according to claim 1 with pressure difference oil supply structure, it is characterised in that：Described
Bearings II（10）Outside determine vortex II is installed（12）, the bearings II（10）End be provided with positioned at determining whirlpool
Rotation II（12）With bearings II（10）Between and with determine vortex II（12）The dynamic vortex II of cooperation（11）, the dynamic vortex II
（11）With bearings II（10）Between anti-rotation mechanism II is installed（16）.
6. the twin-stage scroll compressor according to claim 1 with pressure difference oil supply structure, it is characterised in that：Described
Chamber I（20）Bottom be provided with lubricating oil（19）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710928956.1A CN107503939A (en) | 2017-10-09 | 2017-10-09 | A kind of twin-stage scroll compressor with pressure difference oil supply structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710928956.1A CN107503939A (en) | 2017-10-09 | 2017-10-09 | A kind of twin-stage scroll compressor with pressure difference oil supply structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503939A true CN107503939A (en) | 2017-12-22 |
Family
ID=60700606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710928956.1A Pending CN107503939A (en) | 2017-10-09 | 2017-10-09 | A kind of twin-stage scroll compressor with pressure difference oil supply structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503939A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194360A (en) * | 2018-03-05 | 2018-06-22 | 珠海格力电器股份有限公司 | Compressor and air-conditioner set |
| CN111550405A (en) * | 2020-06-11 | 2020-08-18 | 佛山市南海瀚雪科技有限公司 | Vortex air compressor |
| CN112065716A (en) * | 2020-09-15 | 2020-12-11 | 周晓亮 | Double-extension-shaft horizontal scroll refrigerating compressor |
| CN112963345A (en) * | 2021-03-04 | 2021-06-15 | 柳州易舟汽车空调有限公司 | Vortex type electric air-conditioning compressor |
| CN113123967A (en) * | 2019-12-31 | 2021-07-16 | 比亚迪股份有限公司 | Scroll type two-stage compressor and vehicle with same |
| CN114738277A (en) * | 2022-05-13 | 2022-07-12 | 重庆超力高科技股份有限公司 | Two-stage scroll assembly and two-stage scroll compressor |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141483A (en) * | 1997-11-06 | 1999-05-25 | Matsushita Electric Ind Co Ltd | Electric gas compressor |
| JP2003293966A (en) * | 2002-03-29 | 2003-10-15 | Tokico Ltd | Scroll type fluid machine |
| CN1474060A (en) * | 1997-09-17 | 2004-02-11 | ������������ʽ���� | Vortex compressor |
| JP2006029252A (en) * | 2004-07-20 | 2006-02-02 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| US20110194965A1 (en) * | 2009-01-30 | 2011-08-11 | Panasonic Corporation | Scroll compressor |
| JP2012215082A (en) * | 2011-03-31 | 2012-11-08 | Hitachi Automotive Systems Ltd | Scroll fluid machine |
| CN104295493A (en) * | 2014-09-16 | 2015-01-21 | 合肥圣三松冷热技术有限公司 | Scroll compressor with axially flexible sealed structure |
| US20150037184A1 (en) * | 2013-07-31 | 2015-02-05 | Trane International Inc. | Double-ended scroll compressor lubrication of one orbiting scroll bearing via crankshaft oil gallery from another orbiting scroll bearing |
| CN105683577A (en) * | 2013-10-30 | 2016-06-15 | 三电控股株式会社 | Scroll-type fluid machine |
| CN205559277U (en) * | 2016-04-21 | 2016-09-07 | 张建平 | Horizontal type scroll compressor |
| CN206280258U (en) * | 2017-02-24 | 2017-06-27 | 湖南汤普悦斯压缩机科技有限公司 | A kind of lubrication system of Machining of Vortex Disk of Vortex Compressor |
| CN207500112U (en) * | 2017-10-09 | 2018-06-15 | 合肥圣三松冷热技术有限公司 | A kind of twin-stage scroll compressor with pressure difference oil supply structure |
-
2017
- 2017-10-09 CN CN201710928956.1A patent/CN107503939A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474060A (en) * | 1997-09-17 | 2004-02-11 | ������������ʽ���� | Vortex compressor |
| JPH11141483A (en) * | 1997-11-06 | 1999-05-25 | Matsushita Electric Ind Co Ltd | Electric gas compressor |
| JP2003293966A (en) * | 2002-03-29 | 2003-10-15 | Tokico Ltd | Scroll type fluid machine |
| JP2006029252A (en) * | 2004-07-20 | 2006-02-02 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| US20110194965A1 (en) * | 2009-01-30 | 2011-08-11 | Panasonic Corporation | Scroll compressor |
| JP2012215082A (en) * | 2011-03-31 | 2012-11-08 | Hitachi Automotive Systems Ltd | Scroll fluid machine |
| US20150037184A1 (en) * | 2013-07-31 | 2015-02-05 | Trane International Inc. | Double-ended scroll compressor lubrication of one orbiting scroll bearing via crankshaft oil gallery from another orbiting scroll bearing |
| CN105683577A (en) * | 2013-10-30 | 2016-06-15 | 三电控股株式会社 | Scroll-type fluid machine |
| CN104295493A (en) * | 2014-09-16 | 2015-01-21 | 合肥圣三松冷热技术有限公司 | Scroll compressor with axially flexible sealed structure |
| CN205559277U (en) * | 2016-04-21 | 2016-09-07 | 张建平 | Horizontal type scroll compressor |
| CN206280258U (en) * | 2017-02-24 | 2017-06-27 | 湖南汤普悦斯压缩机科技有限公司 | A kind of lubrication system of Machining of Vortex Disk of Vortex Compressor |
| CN207500112U (en) * | 2017-10-09 | 2018-06-15 | 合肥圣三松冷热技术有限公司 | A kind of twin-stage scroll compressor with pressure difference oil supply structure |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194360A (en) * | 2018-03-05 | 2018-06-22 | 珠海格力电器股份有限公司 | Compressor and air-conditioner set |
| CN108194360B (en) * | 2018-03-05 | 2023-08-25 | 珠海格力电器股份有限公司 | Compressor and air conditioning unit |
| CN113123967A (en) * | 2019-12-31 | 2021-07-16 | 比亚迪股份有限公司 | Scroll type two-stage compressor and vehicle with same |
| CN111550405A (en) * | 2020-06-11 | 2020-08-18 | 佛山市南海瀚雪科技有限公司 | Vortex air compressor |
| CN112065716A (en) * | 2020-09-15 | 2020-12-11 | 周晓亮 | Double-extension-shaft horizontal scroll refrigerating compressor |
| CN112065716B (en) * | 2020-09-15 | 2022-10-21 | 周晓亮 | Double-shaft horizontal vortex type refrigeration compressor |
| CN112963345A (en) * | 2021-03-04 | 2021-06-15 | 柳州易舟汽车空调有限公司 | Vortex type electric air-conditioning compressor |
| CN114738277A (en) * | 2022-05-13 | 2022-07-12 | 重庆超力高科技股份有限公司 | Two-stage scroll assembly and two-stage scroll compressor |
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