CN101761477B - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN101761477B CN101761477B CN2009102486992A CN200910248699A CN101761477B CN 101761477 B CN101761477 B CN 101761477B CN 2009102486992 A CN2009102486992 A CN 2009102486992A CN 200910248699 A CN200910248699 A CN 200910248699A CN 101761477 B CN101761477 B CN 101761477B
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- floating disc
- vortex
- upper support
- ladder
- groove
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Abstract
The invention discloses a scroll compressor. A floating disc is arranged between a movable scroll and an upper supporter of the compressor, the floating disc is a circular disc with two layers of steps, a crossed ring is positioned between the movable scroll and the upper surface of the second step of the circular disc of the floating disc, pressure guide passages are arranged on the upper supporter and the fixed scroll, and the pressure guide passages are communicated with a compression cavity of the compressor and the lower surface of the floating disc for forming a sealed cavity between pressure guide passages and the bottom surface of grooves formed on the upper supporter. The invention has the advantages that all sealing parts adopt static sealing, good and reliable sealing can be realized, the crossed ring moves flatly between the movable scroll and the step surface of the floating disc, the fit gap of the flat movement maintains unchanged, the problems of moving stability loss, vibration enhancement and the like of the crossed ring can not occur, the sealing effect of the sealing between the floating disc and the upper supporter can be ensured during large axial displacement, the movement gap of the crossed ring can not be changed after the floating of the movable scroll, the distance between the movable scroll and a fixed scroll can be longer, and the starting load can be reduced to the maximum degree.
Description
Technical field
The present invention relates to the scroll compressor field, particularly scroll compressor tooth top sealing configuration.
Background technique
Existing scroll compressor comprise be provided with the spirality scroll wrap decide vortex, with decide the moving vortex that is provided with the spirality scroll wrap that vortex matches, between moving vortex and upper support, move, respectively with moving, decide the vortex cooperation and limit the partition ring that they can only relative translation, by moving vortex and deciding a plurality of compression chambers that vortex has complemented each other to form variable volume, move vortex along its revolution orbit revolution by the driven by motor crank-driven, thereby finish suction, compression and the discharge of gas.In order to raise the efficiency, must make fits at the bottom of the tooth of the vortex tooth top of two scroll and another scroll closely leaks with the tooth top that reduces between the adjacent compression chamber.
In the existing prior art, fit closely at the bottom of the tooth for the vortex tooth top that makes two scroll and another scroll and leak with the tooth top that reduces between the adjacent compression chamber, take between moving vortex and upper support, to form a back pressure cavity by Sealing, to move vortex by the fluid of introducing certain pressure and push decide vortex one segment distance to, vortex is fitted tightly decide vortex, reduce the leakage of tooth top.The deficiencies in the prior art are:
1, in the scroll compressor real-world operation process, moving vortex is always in motion at a high speed and generation certain deformation, and the fluid that therefore obtains in good sealing back pressure cavity and the sealing back pressure cavity is very difficult;
2, before this kind scroll compressor starts, moving vortex with decide the vortex tooth top and have a gap with at the bottom of the corresponding tooth, this gap can produce certain unloading effect, the load of minimizing compressor start than greatly the time when startup.Yet excesssive gap moves after deciding vortex at moving vortex, and the axial clearance of the partition ring motion between moving vortex and upper support can increase, and can cause the partition ring motion unstable, problems such as vibration increase.
Summary of the invention
The objective of the invention is in order to solve the above-mentioned problems in the prior art, propose a kind of improved scroll compressor that can reduce the tooth top leakage.
To achieve these goals, technological scheme of the present invention is as follows:
A kind of scroll compressor, comprise the vortex of deciding that is installed in the compressor housing, moving vortex, partition ring, upper support, bent axle, rotor, motor stator, deciding vortex is fixed on the upper support, moving vortex, partition ring is arranged on to be decided between vortex and the upper support, moving vortex is by crank-driven, rotor is installed on the bent axle, upper support, motor stator is fixed on the compressor housing, move vortex and decide vortex and complement each other to form a plurality of compression chambers, it is characterized in that: between described moving vortex and described upper support, be provided with floating disc, described floating disc is the disk with two layers of ladder, the floating disc middle part has two layers of ladder axis hole, circumferential surface with the second rank axis hole on the outer peripheral surface of the second ladder disk of floating disc is provided with seal groove, Sealing is housed in the seal groove, floating disc (8) second ladder disks are loaded on the described upper support (4), upper support (4) is provided with the groove that matches with (8) two layers of ladder axis hole of floating disc and floating disc excircle respectively, the floating disc second ladder disk is loaded in the groove on the described upper support, between the outer peripheral surface of the floating disc second ladder disk and the outer peripheral surface of the groove on the upper support is Spielpassung, the floating disc second rank shaft hole sleeve is contained on the inner peripheral surface of the groove on the upper support, between the circumferential surface of the floating disc second rank axis hole and the inner peripheral surface of the groove on the upper support is Spielpassung, on the floating disc second ladder disk outer peripheral surface and the Sealing in the seal groove on the circumferential surface of the second rank axis hole and the seal groove will seal between the groove on floating disc and the upper support, the intermediate pressure cavity of sealing will be formed between the bottom surface of circular groove on the floating disc lower surface and the groove on the upper support, the upper surface of the floating disc first ladder disk and the bottom surface of moving vortex connect, floating disc second ladder disk upper surface and described partition ring connect, and partition ring is between floating disc second ladder disk upper surface and the moving vortex; On the described upper support and describedly decide vortex and be provided with the impulse passage, the compression chamber of impulse channel connection compressor and described intermediate pressure cavity.
Scroll compressor of the present invention is characterized in that: the upper surface of the first step disk of described floating disc is provided with oil groove.
Scroll compressor of the present invention is characterized in that: the upper surface of the first ladder disk of described floating disc is a concave panel.
Scroll compressor of the present invention is characterized in that: the concave panel of the upper surface of the first ladder disk of described floating disc is inverted cone face or concave spherical surface.
Scroll compressor of the present invention is characterized in that: described upper support and to decide on the vortex impulse passage be or one or more, impulse passage seal by Sealing between vortex and the upper support deciding.
Principle of the present invention is: between moving vortex and upper support a floating disc that can move up and down vertically is set.Floating disc cooperates intermediate pressure cavity of formation by two Sealings with upper support.In upper support with decide to be provided with on the vortex tracting pressuring hole, with moving, decide the middle hydraulic fluid introducing intermediate pressure cavity in the compression chamber that vortex cooperates formation.The pressure of fluid acts on the back side of moving vortex in the intermediate pressure cavity by floating disc.By choosing suitable intermediate pressure value, axial the making a concerted effort upwards that vortex is subjected to, floating disc will move vortex and push decide vortex to.Floating disc is provided with oil groove to improve lubricated between floating disc and the moving vortex, the loss of reducing friction.Floating disc and moving vortex matching surface can be processed into the shape of slight concave in advance, and the distortion during with moving vortex real work matches, and the surface of contact that more is complementary is provided.Among the present invention, partition ring is arranged between moving vortex and the floating disc, respectively with moving, decide vortex and cooperate, guarantee to move, decide relative translation between the vortex.Partition ring horizontal slip between moving vortex and floating disc step surface, and move axially synchronously with moving vortex and floating disc, the matching gap that partition ring slides guaranteed.
Compared with prior art, the present invention has following beneficial effect:
1, forming intermediate pressure cavity of the present invention needs the sealing of three places, is respectively the two places axial seal that floating disc and upper support cooperate, upper support and decide vortex tracting pressuring hole joint and seal.Three positions are static seal, just can realize good sealing reliably with existing technology (as O type circle), have avoided the leakage of intermediate pressure fluid.
2, partition ring translation between moving vortex and floating disc step surface among the present invention, no matter whether moving vortex floats, the matching gap of partition ring translation remains unchanged, and the gap that moving vortex floats back partition ring translation can not occur and increase problems such as causing partition ring motion unstability, vibration increase.
3, before moving vortex floats the scroll compressor starting, moving vortex with decide vortex and normally separate a bit of distance.In the compressor start process, the fluid in the compression chamber can be gone out by this clearance leakage, produces the effect of unloading when starting, reduces starting duty.Common moving vortex floating structure, because it is be subjected to the plane sealing structure between moving vortex and the upper support and the restriction of partition ring matching gap, moving, to decide the distance that vortex separates not too large usually, the DeGrain of unloading.Structure among the present invention, between floating disc and the upper support be sealed in bigger axial displacement the time also can guarantee the sealing, the gap of the motion of partition ring can not change after moving vortex floats yet, therefore can the distance setting of moving, deciding between the vortex is bigger, farthest reduce starting duty.
Description of drawings
The present invention has 5 width of cloth accompanying drawings.Wherein:
Fig. 1 is the structural representation of scroll compressor of the present invention;
Fig. 2 is the partial structurtes view of scroll compressor tooth top sealing mechanism of the present invention;
Fig. 3 is the plan view of this upper support;
Fig. 4 is the embodiment of floating disc upper surface band oil groove of the present invention;
Fig. 5 is the embodiment that floating disc upper surface of the present invention is a matrix.
Among the figure: 1, decide vortex, 2, moving vortex, 3, partition ring, 4, upper support, 5, bent axle, 6, rotor, 7, motor stator, 8, floating disc, 9, compression chamber, 10, decide the impulse passage on the vortex, 11, impulse passage on the upper support, 12, Sealing, 13, Sealing, 14, decide on the vortex Sealing between the impulse passage on the impulse passage and upper support, 15, floating disc second step outer peripheral surface, 16, the floating disc second axis hole circumferential surface, 17, floating disc first step upper surface, 18, floating disc second step upper surface, 19, the moving vortex back side, 20, upper support groove inner peripheral surface, 21, upper support groove outer peripheral surface, 22, intermediate pressure cavity, 23, floating disc first step upper surface oil groove.
Embodiment
Embodiment below in conjunction with accompanying drawing describes further to the present invention.As shown in Figure 1, scroll compressor mainly comprises and decides vortex 1, moving vortex 2, partition ring 3, upper support 4, bent axle 5, rotor 6, motor stator 7.Decide vortex 1 and complement each other to form a plurality of compression chambers 9 with moving vortex 2, be provided with partition ring 3 and decide vortex 1 and moving vortex 2 cooperates at moving vortex 2 dorsal parts, make vortex 2 can only decide vortex 1 translation relatively, bent axle 5 is driven by rotor 6 by motor stator 7, bent axle 5 drives moving vortex 2 and moves along orbit plane, thereby finishes air-breathing, compression, the exhaust process of compression working medium.
As shown in Figure 2, between moving vortex 2 and upper support 4, be provided with floating disc 8, floating disc 8 has the second step outer peripheral surface 15 and the second axis hole circumferential surface 16, cooperate with the outer peripheral surface 21 and the inner peripheral surface 20 of the fluted body structure of upper support 4 respectively, by Sealing 12 and Sealing 13 sealings, and then form intermediate pressure cavity 22.Deciding to offer impulse path 10 and impulse passage 11 on vortex 1 and the upper support 4, and be communicated with on vortex 1 and upper support 4 surface of contact deciding, by Sealing 14 sealings.The impulse path 10 is connected compression chamber 9 and intermediate pressure cavity 22 with impulse passage 11.
Floating disc 8 has first step upper surface 17, contacts with moving vortex 2.Moving vortex 2 slides on the first step upper surface 17 of floating disc 8 when compressor operating, and provides axially support power upwards by floating disc 8.
Floating disc 8 has second step upper surface 18, has one section difference with first step upper surface 17.Partition ring 3 is motion between the second step upper surface 18 of floating disc 8 and the moving vortex back side 19, and guarantees that by the distance between these two planes partition ring 3 can only planar slide, can run-off the straight or vibration.
Floating disc 8 is provided with oil groove 23 with the first step upper surface 17 that moving vortex 2 contacts, and can make the easier entire contact surface that enters into of lubricant oil provide better lubricated, reduces the frictional loss that moving vortex moves on floating disc.
Working principle of the present invention is as follows: when compressor start, along with the rotation of moving vortex 2, the pressure in the compression chamber 9 raises.To promote moving vortex 2 and decide vortex 1 and separate a segment distance, a part of compressed fluid in the compression chamber 9 can driven vortex 2 with the tooth top of deciding vortex 1 to external leakage, thereby reduce starting duty.Simultaneously, along with the pressure in the compression chamber 9 raises, compressive flow cognition enters the intermediate pressure cavity 22 that is surrounded by floating disc 8 and upper support 4 by impulse path 10 and the impulse passage of deciding on the vortex 1 11 on the upper support 4, and the pressure in the intermediate pressure cavity 22 is raise.Pressure in the intermediate pressure cavity 22 acts on floating disc 8, changes into the support force of floating disc 8 for moving vortex 2, and direction is axially upwards.When suffered other of the big and moving vortex of this support force 2 axially downward make a concerted effort the time, floating disc 8 will promote moving vortex 2 and rely on and decide vortex 1, closely contact at the bottom of making the tooth of vortex 2 and the tooth top of deciding vortex 1 and relative scroll, make compression chamber 9 obtain good tooth top sealing.
Provided the another kind of embodiment of floating disc 8 as Fig. 5, the first step upper surface 17 that contacts with moving vortex 2 is processed to the center slightly to recessed shape.This shape can be that the inverted cone face also can be a concave spherical surface.Moving vortex 2 is subjected to the effect of temperature and gas force when the compressor real work, can produce certain deformation.The back side 19 that makes vortex is not a good plane, the blistering sphere but the downward cocked bead in a kind of centre is tilted upward.First upper surface 17 that floating disc 8 is contacted with moving vortex 2 is processed into corresponding shape, can make the back side 19 of first step upper surface 17 on the floating disc 8 and moving vortex good fit, gap everywhere is more even, be beneficial to lubricant film and form, can reduce the frictional loss that moving vortex 2 moves on floating disc 8.
Claims (5)
1. scroll compressor, comprise being installed in and decide vortex (1) in the compressor housing, moving vortex (2), partition ring (3), upper support (4), bent axle (5), rotor (6) and motor stator (7), deciding vortex (1) is fixed on the upper support (4), moving vortex (2), partition ring (3) is arranged on to be decided between vortex (1) and the upper support (4), moving vortex (2) is driven by bent axle (5), rotor (6) is installed on the bent axle (5), upper support (4) and motor stator (7) are fixed on the compressor housing, move vortex (2) and decide vortex (1) and complement each other to form a plurality of compression chambers (9), it is characterized in that: between described moving vortex (2) and described upper support (4), be provided with floating disc (8), described floating disc (8) is the disk with two layers of ladder, floating disc (8) middle part has two layers of ladder axis hole, the outer peripheral surface (15) of the second ladder disk of floating disc (8) is gone up and the circumferential surface (16) of the second rank axis hole is provided with seal groove, Sealing (12 is housed in the seal groove, 13), floating disc (8) second ladder disks are loaded on the described upper support (4), upper support (4) is provided with the groove that matches with (8) two layers of ladder axis hole of floating disc and floating disc excircle respectively, floating disc (8) second ladder disks are loaded in the groove of described upper support (4), be Spielpassung between the outer peripheral surface (21) of the groove of (4) on the outer peripheral surface (15) of floating disc (8) second ladder disks and the upper support, floating disc (8) second rank shaft hole sleeves are contained on the inner peripheral surface (20) of the groove on the upper support, between the circumferential surface (16) of floating disc (8) second rank axis holes and the inner peripheral surface of the groove on the upper support is Spielpassung, on the floating disc second ladder disk outer peripheral surface and seal groove on the circumferential surface of the second rank axis hole and the Sealing (12 in the seal groove, 13) will seal between the groove on floating disc and the upper support, the intermediate pressure cavity (22) of sealing will be formed between the bottom surface of the groove on floating disc (8) lower surface and the upper support, the upper surface (17) of floating disc (8) first ladder disks connects with the bottom surface of moving vortex (2), floating disc (8) second ladder disk upper surfaces (18) connect with described partition ring (3), and partition ring (3) is between floating disc second ladder disk upper surface (18) and the moving vortex (2); Described upper support (4) goes up and describedly decides vortex (1) and be provided with impulse passage (10,11), the compression chamber (9) of impulse channel connection compressor and intermediate pressure cavity (22).
2. scroll compressor according to claim 1 is characterized in that: the upper surface of the first ladder disk of described floating disc (8) is provided with oil groove (23).
3. scroll compressor according to claim 1 is characterized in that: the upper surface of the first ladder disk of described floating disc is a concave panel.
4. scroll compressor according to claim 3 is characterized in that: the concave panel of the upper surface of the first ladder disk of described floating disc is inverted cone face or concave spherical surface.
5. scroll compressor according to claim 1 is characterized in that: described upper support (4) and decide vortex (1) and go up impulse passage (10,11) and be one or more, impulse passage seal by Sealing between vortex and the upper support deciding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102486992A CN101761477B (en) | 2009-12-22 | 2009-12-22 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102486992A CN101761477B (en) | 2009-12-22 | 2009-12-22 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101761477A CN101761477A (en) | 2010-06-30 |
| CN101761477B true CN101761477B (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102486992A Active CN101761477B (en) | 2009-12-22 | 2009-12-22 | Scroll compressor |
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| Country | Link |
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| CN (1) | CN101761477B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287371A (en) * | 2011-09-16 | 2011-12-21 | 大连三洋压缩机有限公司 | Scroll compressor |
| CN102953989B (en) * | 2012-11-27 | 2015-07-15 | 松下压缩机(大连)有限公司 | Floating scroll compressor |
| JP6274281B1 (en) * | 2016-08-31 | 2018-02-07 | ダイキン工業株式会社 | Scroll compressor |
| JP6274280B1 (en) * | 2016-08-31 | 2018-02-07 | ダイキン工業株式会社 | Scroll compressor |
| WO2023125816A1 (en) * | 2021-12-31 | 2023-07-06 | 丹佛斯（天津）有限公司 | Driving member for scroll compressor, and scroll compressor |
| CN114718862A (en) * | 2022-02-18 | 2022-07-08 | 松下压缩机(大连)有限公司 | Dynamic vortex floating structure of compressor |
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2009
- 2009-12-22 CN CN2009102486992A patent/CN101761477B/en active Active
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| CN101761477A (en) | 2010-06-30 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO., LTD. Free format text: FORMER NAME: DALIAN SANYO COMPRESSOR CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 116600 Dalian economic and Technological Development Zone, Liaoning Pine Street, No. 8 Patentee after: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO.,LTD. Address before: 116033 No. 78 East Sea Road, Ganjingzi District, Liaoning, Dalian Patentee before: DALIAN SANYO COMPRESSOR Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 116600 No. 8 Songlan Street, Dalian Economic and Technological Development Zone, Liaoning Province Patentee after: Bingshan Songyang Compressor (Dalian) Co.,Ltd. Address before: 116600 No. 8 Songlan Street, Dalian Economic and Technological Development Zone, Liaoning Province Patentee before: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |