CN103104485A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN103104485A CN103104485A CN2011103620676A CN201110362067A CN103104485A CN 103104485 A CN103104485 A CN 103104485A CN 2011103620676 A CN2011103620676 A CN 2011103620676A CN 201110362067 A CN201110362067 A CN 201110362067A CN 103104485 A CN103104485 A CN 103104485A
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- back pressure
- cavity
- movable orbiting
- spring sheet
- orbiting scroll
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Abstract
The invention aims at providing a scroll compressor with a simple back pressure adjusting structure. The scroll compressor is characterized in that an axial flange projects from the external edge of the end face of a bracket; the external edge of a leaf spring is fixed on the flange; the middle part of the leaf spring is located between the bracket and an end plate of a dynamic vortex plate; a connecting channel is formed in the bracket and connects an air sucking cavity and a back pressure cavity; the leaf spring is connected with the dynamic vortex plate and elastically deforms; and the elastic deformation amount of the leaf spring is associated with the opening area of the connecting channel, so that the leaf spring can change the opening area of the connecting channel.
Description
Technical field
The present invention relates to compressor, relate in particular to scroll compressor.
Background technique
The compression assembly of used for automobile air conditioning scroll compressor comprises movable orbiting scroll and quiet whirlpool dish, thereby intermeshingly crosses a plurality of compression chambers 27.Quiet whirlpool dish keeps static, and movable orbiting scroll is subjected to bent axle band action eccentric rotary, and peripheral compression chamber 27 moves volume-diminished simultaneously gradually to the center.
U.S. Patent number US6872063, disclose a kind of electric scroll formula compressor with back pressure, as shown in Figure 1, back pressure cavity 75 is introduced exhaust pressure through pressure feed passage 76 from exhaust cavity 52, to 45 back pressure supporting effects of movable orbiting scroll, to reduce the frictional force between movable orbiting scroll and support 32.Be provided with valve 78 between back pressure cavity 75 and air aspiration cavity 50, valve 78 is opened back pressure cavity 75 and air aspiration cavity 50 conductings, and the pressure drop of back pressure cavity 31 is to regulate back pressure.
Summary of the invention
The object of the present invention is to provide a kind of scroll compressor, it has the backpressure adjusting mechanism that substitutes aforementioned valve, and it is simple in structure.
For realizing the scroll compressor of described purpose, comprise shell, have air aspiration cavity and exhaust cavity; Movable orbiting scroll and quiet whirlpool dish, engagement forms compression chamber, and movable orbiting scroll is driven by bent axle; And support, and form back pressure cavity between the end plate of movable orbiting scroll; It is characterized in that, the spring sheet that also comprises annular, the outward edge projecting shaft of bracket end face to flange, the outer rim of spring sheet abuts against on this flange, and connecting passage is offered in the middle part of spring sheet on support between the end plate of support and movable orbiting scroll, connecting passage connects air aspiration cavity and back pressure cavity, spring sheet is accepted movable orbiting scroll and flexible distortion, and the elastic deformation amount of spring sheet is associated with the area of opening of connecting passage, so that spring sheet can change the area of opening of connecting passage.
Described scroll compressor, its further characteristics are that connecting passage is the groove that radially extends that is opened on flange, the contiguous air aspiration cavity of an end of groove, the contiguous back pressure cavity of the other end.
Described scroll compressor, its further characteristics are that connecting passage is the hole of radially extending that is opened on flange, the contiguous air aspiration cavity of an end in hole, the contiguous back pressure cavity of the other end.
Described scroll compressor, its further characteristics be, connecting passage is the axially extended hole of running through support, the contiguous air aspiration cavity of an end in hole, and the contiguous back pressure cavity of the other end, an end of contiguous back pressure cavity is located near flange.
Described scroll compressor, its further characteristics are that it is that spring sheet maintains end thrust to movable orbiting scroll that the installation between spring sheet and movable orbiting scroll is closed.
Described scroll compressor, its further characteristics are that support and shell are integrated or are fixed on shell.
Described scroll compressor, its further characteristics are that connecting passage is higher than the back pressure cavity extreme lower position.
Described scroll compressor, its further characteristics are that the outer rim of spring sheet is folded between this flange and quiet whirlpool dish.
Variation due to the spring sheet shape, the opening that connects the connecting passage of air aspiration cavity and back pressure cavity is numbered thereupon, therefore spring sheet, support and movable orbiting scroll have played the function of a back pressure regulating valve, when back pressure is excessive, connecting passage connects, suitably to the air aspiration cavity release pressure, when back pressure is not enough, close in time connecting passage, effectively be kept at wherein after making exhaust pressure enter back pressure cavity, to increase back pressure, promote movable orbiting scroll to quiet whirlpool dish side, prevent that movable orbiting scroll and support from acutely rubbing, make movable orbiting scroll float between support and quiet whirlpool dish all the time.Therefore the present invention has realized the function of backpressure regulation with simple structure and technique, spring sheet itself with wear-resisting function make rub between movable orbiting scroll and support less.
Description of drawings
Fig. 1 is the schematic diagram that has with the electric scroll formula compressor of 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 local enlarged diagram of backpressure adjusting mechanism in Fig. 2.
Fig. 4 is the view of the end face side of support.
Fig. 5 is the sectional drawing along A-A line in Fig. 4.
Fig. 6 is the schematic diagram that backpressure adjusting mechanism disconnects air aspiration cavity and back pressure cavity.
Fig. 7 is the schematic diagram that backpressure adjusting mechanism connects air aspiration cavity and back pressure cavity.
Fig. 8 is the local enlarged diagram of the backpressure adjusting mechanism of another embodiment of the present invention.
Embodiment
Embodiment 1
As shown in Figure 2, scroll compressor is driven by drive motor 1.Shell 20 crosses motor cavity 29 and holds motor, and the driving mechanism that is driven by motor 1 comprises bent axle 2, eccentric wheel 4, bearing 8.Compressing mechanism comprises movable orbiting scroll 10 and quiet whirlpool dish 15, thereby it intermeshingly crosses a plurality of compression chambers 27.The middle end of bent axle 2 departs from the position of crankshaft center and stretches out crank 3, and crank 3 inserts in the hole 5 of eccentric wheel 4.The lining 11 at bearing 8, movable orbiting scroll 10 back sides is installed in eccentric wheel 4 outsides successively.Shell 20 is provided with intakeport and relief opening, intakeport is sucked into air aspiration cavity 28 with the refrigerant gas in air conditioner loop, the middle part mounting bracket 21 of shell 20, bent axle 3 is subjected to bearing 26 support rotatings of support 21 mesopores, crank 3 drives movable orbiting scroll 10 and makes eccentric motion, when movable orbiting scroll 10 is stressed when shifting to support 21, the end face 22 of support 21 is relative with the end plate 16 of movable orbiting scroll 10, can end plate 16 be played a supportive role.The outermost surface of movable orbiting scroll 10 is air aspiration cavity 28, from the outside refrigeration agent that sucks low pressure of compressor.When movable orbiting scroll 10 rotates, form the compression chamber 27 of sealing between movable orbiting scroll 10 and quiet whirlpool dish 15, and compression chamber 27 moves, dwindles to internal layer gradually, thereby compressed refrigerant, refrigeration agent is discharged high-pressure refrigerant from quiet whirlpool center hole 19, drain into exhaust cavity 30, then be discharged to air conditioner loop by relief opening.
Form back pressure cavity 31 between the end plate 16 of movable orbiting scroll 10 and support 21, the pressurized gas that illustrate exhaust cavity 30 in Fig. 2 cause back pressure cavity 31 through whirlpool dish supply passage 17, to improve back pressure, back pressure acts on movable orbiting scroll end plate 16, movable orbiting scroll 10 is produced to the moving axially or mobile trend of quiet whirlpool dish 15, to reduce the frictional force between movable orbiting scroll 10 end 16 plates and support 21 end faces, simultaneously, improve the sealing of each compression chamber 27, reduce the pressurized gas in intermediate compression chamber 27 from end of engagement towards external leakage.
Fig. 3 is the partial enlarged drawing of Fig. 2, and it shows the backpressure adjusting mechanism that comprises spring sheet 12, support 21 and movable orbiting scroll 11, and Fig. 4 is the end view of support 21, is back pressure cavity 31 near the zone at support 21 centers, and support 21 outsides communicate with air aspiration cavity 28 with rear side.The outward edge of support 21 end faces axially stretches out flange 22A, offers a groove 23 that radially extends on flange 22A, and this groove 23 can with support 21 outsides and support 21 center region conductings, be about to back pressure cavity 31 and air aspiration cavity 28 conductings.End plate 16 diameters of movable orbiting scroll 10 are less than flange 22A internal diameter, contact hermetically between the outward edge 16A of end plate 16 and spring sheet 12.Fig. 5 is the A-A direction sectional view of Fig. 4, and the axial height of groove is 0.01～0.4mm, and the circumferential width of groove is 1～15mm.
The outward edge 12A of spring sheet 12 is between the flange 22A and quiet whirlpool dish 15 of support 21, and its middle part 12B is between the end plate 16 of flange 22A inner side end and movable orbiting scroll 11.When the pressure P c of the compression chamber 27 on acting on movable orbiting scroll 11 is less than or equal to the elastic-restoring force F sum of the back pressure Pb that acts on movable orbiting scroll 11 and spring sheet 12, be Pc≤Pb+F, movable orbiting scroll 11 is towards the 15 direction skews of quiet whirlpool dish, according to each Assembly of the parts relation, spring sheet 12 is pressed to support 21 slightly by the end plate 16 of movable orbiting scroll 11, the thrust that is 12 pairs of movable orbiting scrolls 11 of spring sheet exists all the time, elastic-restoring force F is all the time greater than 0, demonstration is with small distortion, and groove 23 still is in the state that back pressure cavity 31 and air aspiration cavity 28 are connected.As shown in Figure 6, the pressure P c of the compression chamber 27 on acting on movable orbiting scroll 11 is when acting on the elastic-restoring force F sum of back pressure Pb on movable orbiting scroll 11 and spring sheet 12, be Pc＞Pb+F, movable orbiting scroll 11 is towards support 21 direction skews, the end plate 16 of movable orbiting scroll 11 is by being pressed on spring sheet 12, the outward edge 16A of end plate 16 becomes a fulcrum, make the middle part 12B of spring sheet 12 that obvious deflection deformation occur, come close to or in contact with towards support 21 end faces, make the perforation area of groove 23 reduce or close, between back pressure cavity 31 and air aspiration cavity 28, gas flow reduces or blocks.Elastic-restoring force F acts on movable orbiting scroll 11, and direction is towards quiet whirlpool dish 15.The pressure P c of compression chamber 27 mainly is distributed in the central position of movable orbiting scroll 11, and radially outward successively decreases, so movable orbiting scroll 11 is in when skew, and the center produces the trend of evagination distortion, and is not shown.
As shown in Figure 7, groove 23 also can substitute with being opened in the hole 24 that is radially extension on flange.Can one or more corresponding passage be set at circumferencial direction, its total sectional area is S.For avoiding lubricant oil to run off, the channel position between back pressure cavity 31 and air aspiration cavity 28 can not be the bottom of back pressure cavity 31, needs higher than back pressure cavity 31 extreme lower positions.
Due to the variation of spring sheet 12 shapes, the groove 23 that connects air aspiration cavity 28 and back pressure cavity 31 can connect or close, so spring sheet 12, support 21 and movable orbiting scroll 11 have consisted of a back pressure regulating valve.When back pressure is excessive, groove 23 or hole 24 connect, suitably to air aspiration cavity 28 release pressures, when back pressure is not enough, close in time and effectively be kept at wherein after locked groove 23 or hole 24 make exhaust pressure enter back pressure cavity 31, to increase back pressure, promote movable orbiting scrolls 11 to quiet whirlpool dish 15 sides, prevent that movable orbiting scroll 11 and support 21 from acutely rubbing, make movable orbiting scroll 11 float between support 21 and quiet whirlpool dish 15 all the time.Therefore previous embodiment has realized the function of backpressure regulation with simple structure and technique, spring sheet 12 itself with wear-resisting function make rub between movable orbiting scroll 11 and support 21 less.
Embodiment 2
As shown in Figure 8, hole 24 can replace with the axially extended hole 25 of running through support 21, and motor cavity 29 communicates with air aspiration cavity 28, the contiguous motor cavity 29 of an end in hole 25, and the contiguous back pressure cavity 31 of the other end, an end of contiguous back pressure cavity 31 is located near flange.
Claims (8)
1. scroll compressor, comprise
Shell has air aspiration cavity and exhaust cavity;
Movable orbiting scroll and quiet whirlpool dish, engagement forms compression chamber, and movable orbiting scroll is driven by bent axle; And
Support, and form back pressure cavity between the end plate of movable orbiting scroll;
It is characterized in that,
The spring sheet that also comprises annular, the outward edge projecting shaft of described bracket end face to flange, the outer rim of described spring sheet abuts against on this flange, the middle part of described spring sheet is between the end plate of described support and described movable orbiting scroll, offer connecting passage on described support, described connecting passage connects described air aspiration cavity and described back pressure cavity, described spring sheet is accepted described movable orbiting scroll and flexible distortion, and the elastic deformation amount of described spring sheet is associated with the area of opening of described connecting passage, so that described spring sheet can change the area of opening of connecting passage.
2. scroll compressor as claimed in claim 1, is characterized in that, described connecting passage is the groove that radially extends that is opened on described flange, the contiguous described air aspiration cavity of an end of this groove, the contiguous described back pressure cavity of the other end.
3. scroll compressor as claimed in claim 1, is characterized in that, described connecting passage is the hole of radially extending that is opened on described flange, the contiguous described air aspiration cavity of an end in this hole, the contiguous described back pressure cavity of the other end.
4. scroll compressor as claimed in claim 1, it is characterized in that, described connecting passage is the axially extended hole of running through described support, the contiguous described air aspiration cavity of an end in this hole, the contiguous described back pressure cavity of the other end, an end of contiguous described back pressure cavity is located near described flange.
5. scroll compressor as claimed in claim 1, is characterized in that, it is that described spring sheet maintains end thrust to described movable orbiting scroll that the installation between described spring sheet and described movable orbiting scroll is closed.
6. scroll compressor as claimed in claim 1, is characterized in that, described support and described shell are integrated or are fixed on described shell.
7. scroll compressor as claimed in claim 1, is characterized in that, described connecting passage is higher than described back pressure cavity extreme lower position.
8. scroll compressor as claimed in claim 1, is characterized in that, the outer rim of described spring sheet is folded between described flange and described quiet whirlpool dish.
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 true CN103104485A (en) | 2013-05-15 |
| CN103104485B CN103104485B (en) | 2017-04-05 |
Family
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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 |
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| CN (1) | CN103104485B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747438A (en) * | 2013-12-30 | 2015-07-01 | 上海三电贝洱汽车空调有限公司 | Scroll compressor |
| CN105026763A (en) * | 2013-07-02 | 2015-11-04 | 汉拿伟世通空调有限公司 | 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 |
| CN115003913A (en) * | 2020-07-01 | 2022-09-02 | 翰昂汽车零部件有限公司 | Scroll compressor for compressing refrigerant and method for oil enrichment and distribution |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58160583A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Scroll type fluidic machine |
| US20040136855A1 (en) * | 2002-10-25 | 2004-07-15 | Kazuya Kimura | Scroll type compressor |
| CN1690431A (en) * | 2004-04-28 | 2005-11-02 | 乐金电子(天津)电器有限公司 | Screw compressor |
| CN101107468A (en) * | 2005-01-25 | 2008-01-16 | 艾罗克林有限公司 | Constant flow regulator device |
| KR20090027348A (en) * | 2007-09-12 | 2009-03-17 | 학교법인 두원학원 | A scroll compressor having sealing structure for back pressure chamber |
| CN101592150A (en) * | 2008-05-30 | 2009-12-02 | 日立空调·家用电器株式会社 | Scroll fluid machine |
| 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
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58160583A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Scroll type fluidic machine |
| US20040136855A1 (en) * | 2002-10-25 | 2004-07-15 | Kazuya Kimura | Scroll type compressor |
| CN1690431A (en) * | 2004-04-28 | 2005-11-02 | 乐金电子(天津)电器有限公司 | Screw compressor |
| CN101107468A (en) * | 2005-01-25 | 2008-01-16 | 艾罗克林有限公司 | Constant flow regulator device |
| KR20090027348A (en) * | 2007-09-12 | 2009-03-17 | 학교법인 두원학원 | A scroll compressor having sealing structure for back pressure chamber |
| CN101592150A (en) * | 2008-05-30 | 2009-12-02 | 日立空调·家用电器株式会社 | Scroll fluid machine |
| JP2011080376A (en) * | 2009-10-05 | 2011-04-21 | Toyota Industries Corp | Scroll compressor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105026763A (en) * | 2013-07-02 | 2015-11-04 | 汉拿伟世通空调有限公司 | Scroll compressor |
| CN105026763B (en) * | 2013-07-02 | 2018-04-10 | 翰昂系统有限公司 | 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 |
| CN115003913A (en) * | 2020-07-01 | 2022-09-02 | 翰昂汽车零部件有限公司 | Scroll compressor for compressing refrigerant and method for oil enrichment and distribution |
| CN115003913B (en) * | 2020-07-01 | 2024-04-19 | 翰昂汽车零部件有限公司 | Scroll compressor for compressing refrigerant and method for oil enrichment and distribution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103104485B (en) | 2017-04-05 |
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| C06 | Publication | ||
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| 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 |
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| 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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |