CN101265907B - Scroll compressor with simplified floating seal mechanism - Google Patents
Scroll compressor with simplified floating seal mechanism Download PDFInfo
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- CN101265907B CN101265907B CN2008100278257A CN200810027825A CN101265907B CN 101265907 B CN101265907 B CN 101265907B CN 2008100278257 A CN2008100278257 A CN 2008100278257A CN 200810027825 A CN200810027825 A CN 200810027825A CN 101265907 B CN101265907 B CN 101265907B
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- floating seal
- boss
- scroll compressor
- quiet whirlpool
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- 238000007667 floating Methods 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims abstract description 5
- 230000004069 differentiation Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000004350 Strabismus Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention relates to a scroll compressor with a simplified floating sealing mechanism, which comprises a shell, a partition plate, a movable scroll disk, a static scroll disk, a motor and a crankshaft for driving the movable scroll disk, a base for mounting the static scroll disk, a sleeve bolt and the floating sealing mechanism, wherein the floating sealing mechanism comprises a boss which is integrally formed above an end plate of the static scroll disk, a groove formed at the lower part of the partition plate and a sealing ring, the boss is embedded into the groove, the sealing ring is hermetically arranged between the outer wall of the boss and the inner wall of the groove, and the floating sealing mechanism axially floats between a first position and a second position to achieve the purpose of balancing the stress of the static scroll disk. Compared with the prior art, the floating seal structure has the advantages of being easy to process, reliable to install and low in cost while effectively achieving the floating seal effect.
Description
Technical field
The present invention relates to scroll compressor, relate in particular to the mechanism that realizes the axial float sealing in the scroll compressor.
Background technique
Common scroll compressor mainly is made up of movable orbiting scroll, quiet whirlpool dish, bent axle, pedestal, anti-rotation mechanism and motor etc.; The molded lines of dynamic and static scroll all is a spirality; Movable orbiting scroll is with respect to quiet whirlpool dish off-centre and differ 180 ° of opposed installations, and their axially can contact the end of vortex body molded lines and relative vortex body pig on several straight lines in theory; So between the sound vortex body, form a series of crescent-shaped spaces, i.e. element volume.Is rotating center and when doing the revolution translation of no rotation with certain turning radius at movable orbiting scroll with the center of quiet whirlpool dish; The outer ring crescent-shaped space just can constantly move to the center; Element volume is constantly dwindled and pressure constantly raises, until communicating with the central row pore, pressurized gas are discharged compressor.
In order to reach peak efficiency, it is very important making the end plate of heliconid top and the quiet whirlpool dish of movable orbiting scroll combine the seepage to reduce to greatest extent between them hermetically.Except the seal arrangement that uses the heliconid top, can also use a kind of by means of the fluid certain pressure under make a scroll vertically the method that squints of another scroll reach the purpose of sealing.This just needs a handle to have the seal arrangement that required pressure comes with the fluid isolation that causes skew.
U.S. Copeland Corp discloses a kind of vortex-type machinery with floating seal in Chinese patents ZL 91108516.5, this mechanical device comprises: a can; One places in the shell and the first spirochetal rail operation vortex body is arranged on one end; One places in the shell and the second spirochetal trackless operation whirlpool type body is arranged on one end, and this two vortex body is meshing each other; Make rail operation volute body move the Orbiting device of volute body with respect to trackless, thereby make this two heliconid between a suction pressure district and a head pressure district, produce the inner chamber that volume gradually changes around one; In order to being installed, one of them volute body make it have the device of limited axial motion with respect to another volute body; Limit the device of a groove therein on a volute body surface; In order between said groove and said enclosure, to form the device of a fluid leakage way; The device of pressure fluid is provided to said groove; With the seal arrangement that is placed in the said groove; Seal arrangement in said groove between a primary importance and a second place axial float; In primary importance; Said seal arrangement isolates a head pressure district that distinguishes with suction pressure in said shell; And when the second place, allow head pressure escape of liquid such as suction pressure fluid.
Yet; The above-mentioned patented technology part that comes with some shortcomings: at first; Need on the dish end plate of quiet whirlpool, offer the discharge orifice that is communicated with said groove; Press the chamber so that form between seal arrangement and groove in one, the effect through middle pressure chamber could realize seal arrangement in said groove between a primary importance and a second place axial float; This outer sealing device need be realized three dot encapsulations; Press between chamber and the head pressure district promptly, between middle pressure chamber and the suction pressure district, between suction pressure district and the head pressure district; So structure and performance requirement to seal arrangement itself are higher; Make sealing device structure complicated, cost is high, is difficult for installing and inspection.
Summary of the invention
The purpose of this invention is to provide a kind of scroll compressor, can effectively realize axial float sealing, reduce cost simultaneously, simplified structure, make and install and inspection Rong Gengyi with floating seal mechanism of simplification.
Above-mentioned purpose realizes through following technological scheme:
A kind of scroll compressor with floating seal mechanism of simplification comprises:
One set inside has the can of dividing plate;
One places in the shell and the first spirochetal movable orbiting scroll is arranged on one end;
One places in the shell and the second spirochetal quiet whirlpool dish is arranged on one end, and movable orbiting scroll and quiet whirlpool dish are meshing each other;
One makes movable orbiting scroll around a device with respect to the rim orbital motion of quiet whirlpool, thereby makes movable orbiting scroll and quiet whirlpool dish between a suction pressure district and a head pressure district, produce the inner chamber that volume gradually changes;
One makes it have the device of limited axial motion with respect to movable orbiting scroll in order to quiet whirlpool dish to be installed;
One floating seal mechanism, axial float between a primary importance and a second place;
Said floating seal mechanism comprises groove and the seal ring that the integrated boss in dish end plate top, quiet whirlpool, the lower partition provide, and said boss embeds in the said groove, and said seal ring is arranged between outer wall of boss and the groove inwall hermetically.
The present invention is than the beneficial effect of existing technology, need not on the dish end plate of quiet whirlpool, to offer discharge orifice, presses the chamber in also need not forming, when effectively reaching the floating seal effect, floating seal mechanism possess be easy to process, reliable installation, characteristics that cost is low.
Description of drawings
The partial section of the scroll compressor that Fig. 1 provides for embodiment one;
The partial section of the scroll compressor that Fig. 2 provides for embodiment two;
The partial section of the scroll compressor that Fig. 3 provides for embodiment three;
Fig. 4 is the force analysis figure of quiet whirlpool dish in the scroll compressor provided by the invention.
Description of reference numerals is following:
1. shell, 2. dividing plate, 21. dividing plate exhaust ports, 22. partition grooves, 3. movable orbiting scroll; 4. quiet whirlpool dish, 41. quiet whirlpool dish exhaust ports, 42. boss, 43. volume grooves, 44. seal ring mounting grooves; 5. pedestal, 6. sleeve bolt, 7. bent axle, 8. seal ring, 9. bearing housing; 92. the bearing housing groove, 10. disk spring, the annular mechanism of 11. protrusions, 101. suction pressure districts, 102. head pressure districts.
Embodiment
Embodiment one
As shown in Figure 1, the scroll compressor that present embodiment has the floating seal mechanism of simplification comprises: can 1, and middle and upper part is provided with dividing plate 2 in it; Place in the shell 1 and the first spirochetal movable orbiting scroll 3 is arranged on one end; Place in the shell and the second spirochetal quiet whirlpool dish 4 is arranged on one end, movable orbiting scroll 3 is meshing each other with quiet whirlpool dish 4; Make movable orbiting scroll 3 coil 4 Orbiting devices with respect to quiet whirlpool, comprise motor (not shown) and bent axle 7 etc., thereby make movable orbiting scroll 3 and quiet whirlpool dish 4 between a suction pressure district 101 and a head pressure district 102, produce the inner chamber that volume gradually changes around one; Make it have the device of limited axial motion in order to quiet whirlpool dish 4 to be installed, comprise pedestal 5 and sleeve bolt 6 with respect to movable orbiting scroll 3.Wherein, quiet whirlpool is coiled 4 end plate central authorities and is offered exhaust port 41, and dividing plate 2 central correspondences offer exhaust port 21.Above-mentioned technical characteristics all has open in the prior art, no longer its details is done further description among the application.
Below in conjunction with Fig. 1 the outstanding creation point of present embodiment than existing technology, i.e. floating seal mechanism part are described mainly.The floating seal mechanism that present embodiment provides comprises that quiet whirlpool coils groove 22 and seal ring 8 that the integrated boss in 4 end plates tops 42, dividing plate 2 bottoms form; Wherein boss 42 is that the exhaust port of on quiet whirlpool dish 4, offering 41 is provided with; Groove 22 also is to offer exhaust port 21 around dividing plate 2 central correspondences to offer, and the volume groove 43 of a suitable size is offered on boss 42 tops downwards.Seal ring mounting groove 44 is offered in boss 42 outer walls upper end; Seal ring 8 is installed on this mounting groove 44, and boss 42 embeds in the said groove 22, and seal ring 8 is arranged between boss 42 outer walls and groove 22 inwalls hermetically; Seal ring 8 is whole for circular, and its transverse section is a Y shape.This floating seal mechanism can be between a primary importance and a second place axial float, make to reach optimum efficiency by quiet whirlpool dish stress balance.
Embodiment two
As shown in Figure 2, embodiment two is with embodiment one difference: embodiment's one further groove 22 is molded directly within dividing plate 2 bottoms, and this structure dividing plate is applicable to ash casting cast iron; And among the embodiment two; It is the bearing housing 9 of welding one band exhaust port in dividing plate 2 bottoms; By this bearing housing 9 bearing housing groove 92 is provided, said boss 42 embeds and is installed in the bearing housing groove 92, and seal ring 8 is arranged between boss 42 outer walls and bearing housing groove 92 inwalls hermetically.
Embodiment three
As shown in Figure 3, embodiment three is with embodiment two difference: among the embodiment two, bearing housing 9 is to weld dead dividing plate 2 bottoms, and the defective of its existence is to need centering, makes assembling inconvenient; Among the embodiment three, be between the dish end plate of bearing housing 9 bottoms and quiet whirlpool, to be provided with disk spring 10, be provided with one on bearing housing 9 tops and form the protrusion annular mechanism 11 of sealing, form the sealing of second road, need not centering with dividing plate 2 bottoms.
Below in conjunction with Fig. 4 action principle of the present invention is explained: the active force of quiet whirlpool dish comprises axial gas power Ft, its physical Fr of tangential, radial gas power Fa and the end thrust Fd that is formed by exhaust pressure; Fd=(Pd-Ps) Ae wherein; Pd is a drain pressure; Ps is air-breathing pressure, and Ae is that quiet whirlpool is coiled 4 back sides and is in the area under the exhaust pressure.
We know, in scroll compressor active chamber inside, because the existence of axial gas power; The orbiting and fixed scroll that makes is separated from each other vertically; In order to guarantee axial seal, need overcome the power of this separation, just axis sealing Fseal is greater than zero; Be Fseal=Fd-Ft＞0, so just can guarantee axial seal effect preferably and higher compressor efficiency.
But Fseal is excessive, and then the compressor frictional loss increases, and corresponding mechanical efficiency can reduce.So confirm the active area Ae of a suitable quiet dish exhaust pressure then can reach higher performance through theoretical calculation and experimental research.
The present invention can avoid occurring two kinds of situation so that dynamic and static scroll blade axis sealing is in the middle of the dynamic adjustment balance always:
A, axis sealing are excessive, the aggravation friction, and power consumption increases, and shortens part life;
B, axis sealing deficiency cause compression chamber to be collaborated, and Energy Efficiency Ratio reduces.
Longitudinal balance makes compressor when any operating point is worked, keep extremely low frictional loss.Dynamic and static dish can separate automatically and avoids when liquid hammer occurring in addition.
With No. 91108516.5 comparisons of Chinese patent ZL; The application has following characteristics: 1. the floating seal principle is different: No. 91108516.5 patents of ZL adopt is that the pressure in middle pressure chamber is used for floating seal, and the application directly adopts exhaust pressure to carry out floating seal; 2. project organization is different, and the big small sealing ring of former seal arrangement seals inner and outer wall (internal surface and outer surface on the dish of quiet whirlpool) respectively, and seal ring of the present invention all adopts the mode of seal boss outer wall (outer surface); 3. part processing is simple relatively, only needs above the dish end plate of quiet whirlpool, process boss, correspondingly on dividing plate processes the groove of accommodating boss, or the end of trying to get to the heart of a matter in quiet whirlpool is provided with a bearing housing, by bearing housing the groove of accommodating boss is provided, and then seal ring is set gets final product.
By on can know that the present invention is when realizing axial float sealing function and effect, structure is better simply, cost reduces significantly, and is easy for installation.In addition, the present invention is very responsive to pressure ratio, thereby can be to playing the favorable protection effect such as the vacuum condition of reversing and the air inlet obstruction causes.In this case, seal arrangement is ineffective, so that the fluid of discharging directly gets into the pressure area with pressure of inspiration(Pi) through bypass.This can prevent to form high vacuum and produce and two whirlpool type bodies are pulled in together excessive have destructive power in compressor inlet one side.What is more important, it can prevent to produce between motor protection device connector pin spark or burning.
Claims (8)
1. scroll compressor with floating seal mechanism of simplification comprises:
One set inside has the can of dividing plate;
One places in the shell and the first spirochetal movable orbiting scroll is arranged on one end;
One places in the shell and the second spirochetal quiet whirlpool dish is arranged on one end, and movable orbiting scroll and quiet whirlpool dish are meshing each other;
One makes movable orbiting scroll around a device with respect to the rim orbital motion of quiet whirlpool, thereby makes movable orbiting scroll and quiet whirlpool dish between a suction pressure district and a head pressure district, produce the inner chamber that volume gradually changes;
One makes it have the device of limited axial motion with respect to movable orbiting scroll in order to quiet whirlpool dish to be installed;
One floating seal mechanism, axial float between a primary importance and a second place;
It is characterized in that; Said floating seal mechanism comprises groove and the seal ring that the integrated boss in dish end plate top, quiet whirlpool, the lower partition provide, the exhaust port setting of boss on the dish of quiet whirlpool, and groove is semi-open shape groove; Its central authorities upwards directly are communicated with the exhaust port of dividing plate; Said boss embeds in the said groove, and said seal ring is arranged between outer wall of boss and the groove inwall hermetically, and seal ring separates suction pressure district and head pressure differentiation.
2. the scroll compressor with floating seal mechanism of simplification according to claim 1 is characterized in that said groove directly is opened in the bottom of dividing plate.
3. the scroll compressor with floating seal mechanism of simplification according to claim 1 is characterized in that, also comprises the bearing housing of a band exhaust port, is arranged on the dividing plate bottom, and said groove is provided by this bearing housing.
4. the scroll compressor with floating seal mechanism of simplification according to claim 3 is characterized in that, said bearing housing is to weld dead dividing plate bottom.
5. the scroll compressor with floating seal mechanism of simplification according to claim 3; It is characterized in that; Be provided with disk spring between the dish end plate of said bearing housing bottom and quiet whirlpool, said bearing housing top is provided with one and forms the protrusion annular mechanism of sealing with the dividing plate bottom.
6. according to any described scroll compressor with floating seal mechanism of simplification of claim 1 to 5, it is characterized in that the seal ring mounting groove is offered in said outer wall of boss upper end, said seal ring is installed on this groove.
7. according to any described scroll compressor with floating seal mechanism of simplification of claim 1 to 5, it is characterized in that said seal ring is whole for circular, its transverse section is a Y shape.
8. according to any described scroll compressor of claim 1 to 5, it is characterized in that said boss top offers the volume groove downwards with floating seal mechanism of simplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100278257A CN101265907B (en) | 2008-04-30 | 2008-04-30 | Scroll compressor with simplified floating seal mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100278257A CN101265907B (en) | 2008-04-30 | 2008-04-30 | Scroll compressor with simplified floating seal mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265907A CN101265907A (en) | 2008-09-17 |
| CN101265907B true CN101265907B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100278257A Active CN101265907B (en) | 2008-04-30 | 2008-04-30 | Scroll compressor with simplified floating seal mechanism |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749235B (en) * | 2009-12-22 | 2011-08-24 | 大连三洋压缩机有限公司 | Scroll compressor with floating disc |
| JP6578504B2 (en) | 2013-04-30 | 2019-09-25 | パナソニックＩｐマネジメント株式会社 | Scroll compressor |
| WO2022000873A1 (en) * | 2020-07-01 | 2022-01-06 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| CN112855532B (en) * | 2021-01-19 | 2022-02-18 | 珠海格力电器股份有限公司 | Moving disc assembly and compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196776A (en) * | 1996-05-28 | 1998-10-21 | 大金工业株式会社 | Scroll compressor |
| CN101046202A (en) * | 2007-03-27 | 2007-10-03 | 珠海格力电器股份有限公司 | Compressor with floating sealing device and floating sealing device |
-
2008
- 2008-04-30 CN CN2008100278257A patent/CN101265907B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196776A (en) * | 1996-05-28 | 1998-10-21 | 大金工业株式会社 | Scroll compressor |
| CN101046202A (en) * | 2007-03-27 | 2007-10-03 | 珠海格力电器股份有限公司 | Compressor with floating sealing device and floating sealing device |
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| Publication number | Publication date |
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| CN101265907A (en) | 2008-09-17 |
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