CN103104485B - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- CN103104485B CN103104485B CN201110362067.6A CN201110362067A CN103104485B CN 103104485 B CN103104485 B CN 103104485B CN 201110362067 A CN201110362067 A CN 201110362067A CN 103104485 B CN103104485 B CN 103104485B
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- CN
- China
- Prior art keywords
- spring leaf
- movable orbiting
- orbiting scroll
- interface channel
- scroll
- 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.)
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
It is an object of the invention to provide a kind of scroll compressor, the simple structure of its backpressure regulation.It is characterized in, stretch out axial flange in the outward flange of bracket end face, the outer rim of spring leaf is fixed on the flange, the middle part of spring leaf is located between support and the end plate of movable orbiting scroll, interface channel, interface channel connection suction muffler and back pressure cavity are opened up on support, spring leaf accepts movable orbiting scroll flexible deformation, and the elastic deformation amount of spring leaf is associated with the opening area of interface channel, so that spring leaf can change the opening area of interface channel.
Description
Technical field
The present invention relates to compressor, more particularly to scroll compressor.
Background technology
The compression assembly of scroll compressor used for automobile air conditioning includes movable orbiting scroll and fixed scroll, is intermeshed many so as to cross
Individual compression chamber 27.Fixed scroll remains stationary, movable orbiting scroll are gradually moved to center by bent axle band action eccentric rotary, peripheral compression chamber 27
Dynamic volume-diminished simultaneously.
U.S. Patent number US6872063, discloses a kind of electric scroll formula compressor with back pressure, as shown in figure 1, the back of the body
Pressure 75 Jing pressure feeds passage 76 of chamber introduces pressure at expulsion from discharge chamber 52, to 45 back pressure supporting roles of movable orbiting scroll, to reduce
Frictional force between movable orbiting scroll and support 32.Valve 78 is provided between back pressure cavity 75 and suction muffler 50, valve 78 is opened back pressure cavity 75
Turn on suction muffler 50, the pressure drop of back pressure cavity 31, to adjust back pressure.
The content of the invention
It is an object of the invention to provide a kind of scroll compressor, which has the backpressure adjusting mechanism for substituting aforementioned valve,
Its simple structure.
To realize the scroll compressor of the purpose, including shell, with suction muffler and discharge chamber；Movable orbiting scroll and quiet whirlpool
Disk, engagement form compression chamber, and movable orbiting scroll is driven by bent axle；And between support, and the end plate of movable orbiting scroll, form back pressure cavity；Which is special
Levy and be, also including the spring leaf of annular, axial flange is stretched out in the outward flange of bracket end face, and the outer rim of spring leaf abuts against this
On flange, the middle part of spring leaf is located between support and the end plate of movable orbiting scroll, and interface channel, interface channel connection are opened up on support
Suction muffler and back pressure cavity, spring leaf accept movable orbiting scroll flexible deformation, and the elastic deformation amount of spring leaf and interface channel
Open area to be associated, so that spring leaf can change the opening area of interface channel.
Described scroll compressor, its further feature are that interface channel is to be opened in radially extending on flange
Groove, adjacent to suction muffler, the other end is adjacent to back pressure cavity for one end of groove.
Described scroll compressor, its further feature are that interface channel is to be opened in radially extending on flange
Hole, adjacent to suction muffler, the other end is adjacent to back pressure cavity for the one end in hole.
Described scroll compressor, its further feature are that interface channel is through the axially extending hole of support,
The one end in hole is located near flange adjacent to back pressure cavity, one end of neighbouring back pressure cavity adjacent to suction muffler, the other end.
Described scroll compressor, its further feature are that the installation relation between spring leaf and movable orbiting scroll is bullet
Reed maintains axial thrust to movable orbiting scroll.
Described scroll compressor, its further feature are that support is integrated or is fixed on shell with shell.
Described scroll compressor, its further feature are that interface channel is higher than back pressure cavity extreme lower position.
Described scroll compressor, its further feature are that the outer rim of spring leaf is folded in the flange and fixed scroll
Between.
Due to the change of spring plate shape, the opening for connecting the interface channel of suction muffler and back pressure cavity is numbered therewith, because
This spring leaf, support and movable orbiting scroll serve the function of a back pressure regulating valve, and when back pressure is excessive, interface channel insertion is fitted
When pressure being discharged to suction muffler, when back pressure is not enough, close interface channel so that pressure at expulsion has into after back pressure cavity in time
Effect ground is preserved wherein, to increase back pressure, is promoted movable orbiting scroll to fixed scroll side, is prevented movable orbiting scroll from acutely rubbing with support so that
Movable orbiting scroll is floated between support and fixed scroll all the time.Therefore the present invention realizes backpressure regulation with simple structure and technique
Function, spring leaf per se with wear-resisting function cause to rub between movable orbiting scroll and support it is less.
Description of the drawings
Fig. 1 is the schematic diagram of the electric scroll formula compressor for having carried back pressure.
Fig. 2 is the schematic diagram of the electric scroll formula compressor with back pressure of the present invention.
Fig. 3 is the close-up schematic view of backpressure adjusting mechanism in Fig. 2.
Fig. 4 is the view of the end face side of support.
Fig. 5 is the profile of the line A-A along Fig. 4.
Fig. 6 is the schematic diagram that backpressure adjusting mechanism disconnects suction muffler and back pressure cavity.
Fig. 7 is the schematic diagram of backpressure adjusting mechanism insertion suction muffler and back pressure cavity.
Fig. 8 is the close-up schematic view of the backpressure adjusting mechanism of another embodiment of the present invention.
Specific embodiment
Embodiment 1
As shown in Fig. 2 screw compressor is driven by motor 1.Shell 20 crosses motor cavity 29 and accommodates motor, by motor
1 transmission mechanism for driving includes bent axle 2, eccentric wheel 4, bearing 8.Compression mechanism includes movable orbiting scroll 10 and fixed scroll 15, and which is mutual
Engage so as to cross multiple compression chambers 27.The intermediate ends of bent axle 2 deviate the position of crankshaft center and stretch out crank 3, and crank 3 is inserted partially
In the hole 5 of heart wheel 4.Bearing 8, the bushing 11 at 10 back side of movable orbiting scroll are installed on the outside of eccentric wheel 4 successively.Shell 20 is provided with air entry
And exhaust outlet, the refrigerant gas in air conditioner loop are sucked into suction muffler 28 by air entry, the middle part fixed installation of shell 20
Frame 21, bearing 26 support rotating of the bent axle 3 by 21 mesopore of support, crank 3 drive movable orbiting scroll 10 to make eccentric motion, work as movable orbiting scroll
When 10 stress shift to support 21, the end face 22 of support 21 is relative with the end plate 16 of movable orbiting scroll 10, and end plate 16 can be played a supportive role.
The outermost layer of movable orbiting scroll 10 is suction muffler 28, and the cold-producing medium of low pressure is sucked from outside compressor.When movable orbiting scroll 10 is rotated, whirlpool is moved
The compression chamber 27 of closing, and gradually inner layer movement, the diminution of compression chamber 27 are formed between disk 10 and fixed scroll 15, so as to compress system
Cryogen, cold-producing medium discharge high-pressure refrigerant from fixed scroll centre bore 19, drain into discharge chamber 30, then are discharged to air-conditioning by exhaust outlet
Loop.
Back pressure cavity 31 is formed between the end plate 16 and support 21 of movable orbiting scroll 10, the high pressure gas of discharge chamber 30 in Fig. 2, are illustrated
Body causes back pressure cavity 31 through whirlpool disk feed path 17, and to improve back pressure, back pressure effect makes movable orbiting scroll 10 in movable orbiting scroll end plate 16
Axial movement or the mobile trend to fixed scroll 15 is produced, to reduce the friction between 10 end of movable orbiting scroll, 16 plate and 21 end face of support
Power, meanwhile, the sealing of each compression chamber 27 is improved, and the gases at high pressure in intermediate compression chamber 27 is reduced from end of engagement towards external leakage.
Annular spring leaf 12 is located between movable orbiting scroll end plate 16 and support 21, and annular spring leaf 12 is made of metal, for example
Spring steel, surface need smooth abrasion-proof, and thickness is 0.1～0.8mm.
Fig. 3 is the partial enlarged drawing of Fig. 2, it illustrates the backpressure regulation including spring leaf 12, support 21 and movable orbiting scroll 11
Mechanism, Fig. 4 are the end views of support 21, near 21 center of support region be back pressure cavity 31, on the outside of support 21 with rear side with
Suction muffler 28 is communicated.The axially extended flange 22A in outward flange of 21 end face of support, offers a groove for radially extending on flange 22A
23, the groove 23 can will on the outside of support 21 with 21 central area of support turn on, will back pressure cavity 31 turn on suction muffler 28.Movable orbiting scroll
10 16 diameter of end plate is less than flange 22A internal diameters, hermetically contacts between the outward flange 16A and spring leaf 12 of end plate 16.Fig. 5 is
The A-A directions sectional view of Fig. 4, the axial height of groove is 0.01～0.4mm, and the circumferential width of groove is 1～15mm.
The outward flange 12A of spring leaf 12 is located between the flange 22A and fixed scroll 15 of support 21, and in the middle part of which, 12B is located at convex
Between the end plate 16 of edge 22A inner side ends and movable orbiting scroll 11.When the pressure Pc of the compression chamber 27 acted on movable orbiting scroll 11 is less than
Or equal to back pressure Pb and spring leaf 12 acted on movable orbiting scroll 11 elastic-restoring force F sums when, i.e. Pc≤Pb+F, move whirlpool
Disk 11 is offset towards 15 direction of fixed scroll, and according to each component assembly relation, spring leaf 12 is slightly pressed to by the end plate 16 of movable orbiting scroll 11
Support 21, i.e. spring leaf 12 are present all the time to the thrust of movable orbiting scroll 11, and elastic-restoring force F is consistently greater than 0, show with small
Deformation, and groove 23 is still in by the state of back pressure cavity 31 and 28 insertion of suction muffler.As shown in fig. 6, work as acting on movable orbiting scroll 11
Compression chamber 27 pressure Pc more than the elastic-restoring force F sums for acting on back pressure Pb and spring leaf 12 on movable orbiting scroll 11
When, i.e. Pc ＞ Pb+F, movable orbiting scroll 11 are offset towards 21 direction of support, and the end plate 16 of movable orbiting scroll 11 is pressed against on spring leaf 12, end plate
16 outward flange 16A becomes a fulcrum so that the middle part 12B of spring leaf 12 occurs obvious deflection deformation, towards 21 end face of support
Come close to or in contact with so that the insertion area of groove 23 is decreased or turned off, between back pressure cavity 31 and suction muffler 28 gas flow reduce or
Block.Elastic-restoring force F acts on movable orbiting scroll 11, and direction is towards fixed scroll 15.The pressure Pc of compression chamber 27 is mainly distributed on dynamic
The center of whirlpool disk 11, radially outward successively decreases, therefore movable orbiting scroll 11, in skew, center produces the trend of evagination deformation, figure
Not shown in.
As shown in fig. 7, groove 23 can also be substituted with the hole 24 that radially extends on flange is opened in.Can set in circumferencial direction
One or more corresponding passage is put, its total sectional area is S.To avoid lubricating oil from being lost in, back pressure cavity 31 and suction muffler 28 it
Between channel position can not be back pressure cavity 31 bottom, need to be higher than 31 extreme lower position of back pressure cavity.
Due to the change of 12 shape of spring leaf, connect suction muffler 28 and back pressure cavity 31 groove 23 can insertion or closing, therefore
Spring leaf 12, support 21 and movable orbiting scroll 11 constitute a back pressure regulating valve.When back pressure is excessive, 24 insertion of groove 23 or hole is fitted
When pressure being discharged to suction muffler 28, when back pressure is not enough, close groove 23 in time or hole 24 causes pressure at expulsion to enter back pressure cavity
Be efficiently saved in after 31 wherein, to increase back pressure, movable orbiting scroll 11 promoted to 15 side of fixed scroll, prevent movable orbiting scroll 11 and support 21
Acutely rub so that movable orbiting scroll 11 is floated between support 21 and fixed scroll 15 all the time.Therefore previous embodiment is tied with simple
Structure and technique realize the function of backpressure regulation, spring leaf 12 per se with wear-resisting function cause movable orbiting scroll 11 and support 21
Between rub it is less.
Embodiment 2
As shown in figure 8, hole 24 can be with replacing through the axially extending hole 25 of support 21, motor cavity 29 and suction muffler 28
Communicate, adjacent to motor cavity 29, the other end is located at flange adjacent to one end of back pressure cavity 31 attached adjacent to back pressure cavity 31 for the one end in hole 25
Closely.
Claims (6)
1. scroll compressor, including
Shell, with suction muffler and discharge chamber；
Movable orbiting scroll and fixed scroll, engagement form compression chamber, and movable orbiting scroll is driven by bent axle；And
Back pressure cavity is formed between support, and the end plate of movable orbiting scroll；
Characterized in that,
Also include the spring leaf of annular, axial flange is stretched out in the outward flange of the bracket end face, and the outer rim of the spring leaf is adjacent
It is connected on the flange, the middle part of the spring leaf is located between the support and the end plate of the movable orbiting scroll, is opened on the support
If interface channel, the interface channel connects the suction muffler and the back pressure cavity, and the spring leaf accepts the movable orbiting scroll simultaneously
Flexible deformation, and the elastic deformation amount of the spring leaf is associated with the opening area of the interface channel, so that the bullet
Reed can change the opening area of interface channel；
Wherein, the interface channel is the groove for radially extending being opened on the flange, and one end of the groove is adjacent to the air-breathing
Chamber, the other end is adjacent to the back pressure cavity.
2. scroll compressor, including
Shell, with suction muffler and discharge chamber；
Movable orbiting scroll and fixed scroll, engagement form compression chamber, and movable orbiting scroll is driven by bent axle；And
Back pressure cavity is formed between support, and the end plate of movable orbiting scroll；
Characterized in that,
Also include the spring leaf of annular, axial flange is stretched out in the outward flange of the bracket end face, and the outer rim of the spring leaf is adjacent
It is connected on the flange, the middle part of the spring leaf is located between the support and the end plate of the movable orbiting scroll, is opened on the support
If interface channel, the interface channel connects the suction muffler and the back pressure cavity, and the spring leaf accepts the movable orbiting scroll simultaneously
Flexible deformation, and the elastic deformation amount of the spring leaf is associated with the opening area of the interface channel, so that the bullet
Reed can change the opening area of interface channel；
Wherein, the interface channel is the hole for radially extending being opened on the flange, and the one end in the hole is adjacent to the air-breathing
Chamber, the other end is adjacent to the back pressure cavity.
3. scroll compressor as claimed in claim 1 or 2, it is characterised in that between the spring leaf and the movable orbiting scroll
Installation relation axial thrust is maintained to the movable orbiting scroll for the spring leaf.
4. scroll compressor as claimed in claim 1 or 2, it is characterised in that the support be integrated with the shell or
Fix on the housing.
5. scroll compressor as claimed in claim 1 or 2, it is characterised in that the interface channel is higher than the back pressure cavity
Extreme lower position.
6. scroll compressor as claimed in claim 1 or 2, it is characterised in that the outer rim of the spring leaf is folded in described
Between flange and the fixed scroll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362067.6A CN103104485B (en) | 2011-11-15 | 2011-11-15 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110362067.6A CN103104485B (en) | 2011-11-15 | 2011-11-15 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104485A CN103104485A (en) | 2013-05-15 |
| CN103104485B true CN103104485B (en) | 2017-04-05 |
Family
ID=48312608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110362067.6A Expired - Fee Related CN103104485B (en) | 2011-11-15 | 2011-11-15 | Scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104485B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101642178B1 (en) * | 2013-07-02 | 2016-07-25 | 한온시스템 주식회사 | Scroll compressor |
| CN104747438A (en) * | 2013-12-30 | 2015-07-01 | 上海三电贝洱汽车空调有限公司 | Scroll compressor |
| CN106545495A (en) * | 2017-01-19 | 2017-03-29 | 柳州易舟汽车空调有限公司 | Swirl motor compressor |
| CN107575381A (en) * | 2017-09-04 | 2018-01-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor and air conditioner |
| CN108533487A (en) * | 2018-05-28 | 2018-09-14 | 安徽大富重工机械有限公司 | Screw compressor, refrigeration equipment and automobile |
| DE102020117373A1 (en) * | 2020-07-01 | 2022-01-05 | Hanon Systems | Scroll compressor for compressing a refrigerant and process for oil enrichment and distribution |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58160583A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Scroll type fluidic machine |
| JP4013730B2 (en) * | 2002-10-25 | 2007-11-28 | 株式会社豊田自動織機 | Scroll compressor |
| CN100455807C (en) * | 2004-04-28 | 2009-01-28 | 乐金电子(天津)电器有限公司 | Screw compressor |
| CN100564970C (en) * | 2005-01-25 | 2009-12-02 | 艾罗克林有限公司 | Constant flow regulator device |
| KR100912515B1 (en) * | 2007-09-12 | 2009-08-19 | 학교법인 두원학원 | A scroll compressor having sealing structure for back pressure chamber |
| JP4951586B2 (en) * | 2008-05-30 | 2012-06-13 | 日立アプライアンス株式会社 | Scroll fluid machinery |
| JP2011080376A (en) * | 2009-10-05 | 2011-04-21 | Toyota Industries Corp | Scroll compressor |
-
2011
- 2011-11-15 CN CN201110362067.6A patent/CN103104485B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104485A (en) | 2013-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Shanghai City 200025 Madang Road No. 347 Applicant after: SANDEN HUAYU AUTOMOTIVE AIR-CONDITIONING CO., LTD. Address before: 200025 Shanghai City, Luwan District Shanghai City Madang Road No. 347 Applicant before: Sandian Beier Automobile Air-Conditioner Co., Ltd., Shanghai |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |