CN1084441C - Backpressure cavity sealing device of vortex compressor - Google Patents
Backpressure cavity sealing device of vortex compressor Download PDFInfo
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- CN1084441C CN1084441C CN96118780A CN96118780A CN1084441C CN 1084441 C CN1084441 C CN 1084441C CN 96118780 A CN96118780 A CN 96118780A CN 96118780 A CN96118780 A CN 96118780A CN 1084441 C CN1084441 C CN 1084441C
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- gasket seal
- scroll compressor
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Abstract
The present invention discloses a backpressure cavity sealing device of a scroll compressor, which comprises a non-revolution scroll disc, a revolution scroll disc, a circular sliding block, a main shaft and a bracket body, wherein the circular sliding block is hold in a shaft hub of the revolution scroll disc; the main shaft is combined with the circular sliding block to be rotated and supported; the bracket body is matched with a shaft neck of the main shaft to support the main shaft and is provided with two annular sealing end surfaces; an annular groove is arranged on the second annular end surface of the bracket body, and a sealing gasket is arranged in the annular groove. A sealing element is arranged between a lubricating oil cavity and a high backpressure cavity. The present invention has the characteristics of simple structure of the sealing device, good processing technology and reliable use.
Description
The present invention relates to a kind of scroll compressor with backpressure cavity sealing device.
Number of patent application CN1060699A discloses a kind of scroll machine with floating seal.It is to be provided with an annular groove in the upper-end surface of trackless operation volute body (being the non-revolution scroll), in this circular groove, placing the multi-functional floating seal that constitutes by 3 annular construction members and two groups of Sealings (perhaps by two annular construction members and one group of Sealing), the wear ring that face place, black box the top is provided with on seal lip and the cylindrical shell dividing plate has also constituted top seal, and the isolating seal between low pressure air suction chamber and back pressure cavity, back pressure cavity and high pressure gas chamber, high pressure gas chamber and the low pressure air suction chamber is finished in the sealing of several places respectively.This patent can be described as the up-set type back pressure cavity design of scroll compressor.In the design of up-set type back pressure cavity, the guide rail that the trackless volute body is offset to rail volute body (scroll promptly revolves round the sun) vertically need be set specially, many and the complex structure of the required part number of combination seal, in addition for guaranteeing the reliability of top seal, under the back pressure cavity fluid pressure action, trackless operation volute body must compress the end plate of rail operation volute body, and and then rail operation volute body is pressed on the annular end face of main bearing box (being stake body).Cause bigger friction and power loss.
The purpose of this invention is to provide a kind of simple in structure, use reliable, and the scroll compressor of the band backpressure cavity sealing device of can reduce to revolve round the sun friction between scroll and the stake body and power loss.
The object of the present invention is achieved like this, the present invention includes: a non-revolution scroll and a revolution scroll; The interior smooth block of propeller boss that is housed inside above-mentioned revolution scroll; A main shaft that is rotated supporting that combines with above-mentioned smooth block; One except that cooperating the stake body that also has the seal face of two annulars the supporting spindle with the axle journal of above-mentioned main shaft.On second annular end face of described stake body circular groove is set, in circular groove, adorns sealing gasket; Between lubricant reservoir that smooth block endoporus and end face surround and high pressure back pressure cavity, adorn Sealing.
The bottom of described circular groove is provided with the gas circuit that is made of several apertures and is communicated with the high pressure back pressure cavity.
The cross section of the sealing gasket of adorning in the described circular groove is a ＂ П ＂ shape.
Described Sealing is to establish one to contain the adjustment gasket seal that straight flange is not exclusively justified endoporus; Not exclusively the inner edge surface shape of circle endoporus is corresponding with the incomplete columniform outer edge surface shape of crank throw; Adjusting gasket seal is the outside that is nested in the main shaft crank throw, and axially be installed in smooth block below, leave the gap between second end face of adjusting gasket seal and the corresponding end face of stake body, alternating floor lubricant film only between first end face of adjustment gasket seal and the corresponding end face of smooth block.
The present invention is owing to adopt a kind of underneath type back pressure cavity designing technique that is different from prior art combination floating seal, adopt different seal elements to finish seal isolation between low pressure back pressure cavity and the high pressure back pressure cavity and the seal isolation between high pressure back pressure cavity and the lubricant reservoir respectively, and between the air aspiration cavity of compressor and back pressure cavity (being the high pressure back pressure cavity), increased a low pressure back pressure cavity, can not take place by of the direct leakage of high pressure back pressure cavity to air aspiration cavity, thereby reduced the gas leakage between the different pressures chamber and the power loss of complete machine, and improve the reliability of sealing effectively by the compensating action of seal element.These seal elements simple in structure, technology capability is good, uses reliable.In addition, two other advantage of the present invention is: the guide rail when not needing to be provided with specially the revolution scroll and being offset vertically; Under the back pressure cavity fluid pressure action, the revolution scroll only compresses with the end plate of non-revolution scroll when upwards being offset, thereby the frictional force between revolution scroll and the stake body is reduced to some extent, and power loss is also less.
Below in conjunction with drawings and Examples technological scheme of the present invention is elaborated.
Fig. 1 is the shaft section figure of the scroll compressor among the embodiment 1.
Fig. 2 is the shaft section figure of stake body.
Fig. 3 is the shaft section figure of П shape pad.
Fig. 4 is for adjusting the attached view of gasket seal.
Fig. 5 is for adjusting the shaft section figure of gasket seal.
Fig. 6 is the shaft section figure of the scroll compressor among the embodiment 2.
Fig. 7 is the plan view of gasket seal.
Fig. 8 is the shaft section figure of gasket seal.
With reference to Fig. 1, the backpressure cavity sealing device that is adopted in the embodiments of the invention 1 is for П shape pad 60 and adjust gasket seal 70.In Fig. 1, scroll compressor 5 is made up of a non-revolution scroll 10 and 40, one stake bodies of revolution 30, main shafts of 20, one smooth blocks of scroll, 50 parts such as grade.Non-revolution scroll 10 has from outwardly directed first a spiral wraps 10-1 of end plate, and it and the second spiral wraps 20-1 of revolution on the scroll 20 intersect, thereby limits the fluid chamber of a plurality of continuous motions; On second end face of the end plate on the revolution scroll 20, an outwardly directed propeller boss 20-2 is arranged, the outer edge surface of smooth block 30 is the cylndrical surface, and endoporus is one to contain the non-circular hole of straight flange, smooth block 30 is housed inside in the propeller boss of above-mentioned revolution scroll, both can relatively rotate, can move axially relatively again with the revolution scroll; The one eccentric crank throw 40-2 that is provided with is arranged on first end face of the axle journal 40-1 of main shaft 40, main shaft extends axially with rotor 90 and is consolidated from second end face of axle journal, the outer edge surface of crank throw is that an incomplete cylndrical surface (not shown) that contains straight flange is housed inside in the non-circular hole that one of above-mentioned smooth block contains straight flange, both can relatively move along straight flange with smooth block, can move axially relatively again, lubricant oil is drawn from the end of crank throw by the main oilhole 40-3 that changes, simultaneously the interior outer rim cylinder of lubricated smooth block; With reference to Fig. 2, stake body 50 is except that cooperating the supporting spindle with the axle journal 40-1 of above-mentioned main shaft, the seal face 50-11 and the 50-12 that also have two annulars, outermost annular end face 50-11 is fixed with the corresponding annular end face on the above-mentioned non-revolution scroll, thereby the low pressure back pressure cavity 5-2 of high pressure gas chamber 5-1 in the cylindrical shell and scroll compressor is isolated, with the revolution scroll end plate acting in conjunction of making revolution motion back pressure cavity is divided into two back pressure cavity of high low pressure near the second inboard annular end face 50-12, the outside is low pressure back pressure cavity 5-2, the inboard is high pressure back pressure cavity 5-3, lubricant reservoir 5-4 is surrounded by smooth block 30 and adjustment pad 70 to form, on the second annular end face 50-12 of stake body, a circular groove 50-21 is set, all has the gas circuit that constitutes by several apertures 50-22 to be communicated with at the end of circular groove 50-21 with high pressure back pressure cavity 5-3.Fig. 3 represents that sealing gasket is a ring part, its cross section is made by the wear resistant friction reducing material for the П shape pad 60 of " П " shape, be housed inside among the circular groove 50-21 on the second annular end face 50-12 of above-mentioned stake body, its first end face is a plane or similar plane, on second end face, make an annular groove, outer rim two ring-type fins 60-1 and 60-2 in making it to form, when the gas in the back pressure cavity enters the bottom of circular groove 50-21 of stake body by gas circuit 50-22 after, the interior outer rim fin of П shape pad is respectively to the different direction distending, gas in the salable circular groove 50-21 can not revealed along the sidewall of groove, П shape pad can be made axial float under the pressed gas effect simultaneously, with the wear extent after compensate for clearance and the long-term work of П shape pad.Fig. 4, the incomplete round endoporus 70-1 that gasket seal 70 tools one contain straight flange is adjusted in 5 expressions, be nested in the outside of main shaft crank throw 40-2, and axially be installed in smooth block 30 below, leave the gap between the corresponding end face of its second end face and stake body 50, and alternating floor lubricant film only between the corresponding end face of its first end face and smooth block 30, first end face of smooth block 30 lubricant oil that is stressed directly acts on, sealing load is provided, when main shaft rotates, adjust between gasket seal and the smooth block and do relative translational movement, thereby isolated the gas of high pressure back pressure cavity 5-3 and the lubricant oil around the crank throw 40-2, also played the effect on the surface of lubricated relative movement part simultaneously.
Fig. 6 has illustrated that the backpressure cavity sealing device that is adopted is П shape pad 60 and gasket seal 80 in embodiments of the invention 2.Fig. 7,8 explanation gasket seals, 80 tools one contain the outer edge surface of the non-cylindrical 80-1 of straight flange, it can be nested among the non-round endoporus 30-1 of smooth block, the employing bolt is movably pressed on the end face of putting crank throw by the unthreaded hole 80-2 in center portion, the ring-shaped step of She Zhiing is used for the axially locating of gasket seal on crank throw vertically, sealing load is provided by the pressure oil that acts on gasket seal first end face, and the oilhole 80-3 of gasket seal 80 communicates with oilhole (40-3) on the main shaft 40.Adjusting gasket seal 70 and gasket seal 80 makes by steel.
Except that the above; sealing gasket can also change the flat gasket that the cross section is a rectangle into; perhaps use two or more П shape pads 60 or flat gasket simultaneously; and the gas passageway is not set and replaces spring in the circular groove 50-21 bottom of second annular end face of stake body 50; and the incomplete round endoporus of adjusting gasket seal 70 change into can be nested with the incomplete columniform outer edge surface of main shaft crank throw 40-2 various endoporus; the outer edge surface of the non-cylindrical of gasket seal 80 change into can be nested with the non-round endoporus of smooth block 30 designs such as various outer rim cylinders; all be correction of the present invention or distortion, thereby also all belong to protection scope of the present invention.
Claims (8)
1. the scroll compressor with backpressure cavity sealing device comprises: a non-revolution scroll and a revolution scroll; The interior smooth block of propeller boss that is housed inside above-mentioned revolution scroll; A main shaft that is rotated supporting that combines with above-mentioned smooth block; One except that cooperating the stake body that also has the seal face of two annulars the supporting spindle with the axle journal of above-mentioned main shaft; It is characterized in that: on second annular end face (50-12) of described stake body (50) circular groove (50-21) is set, dress sealing gasket in circular groove (50-21); Between lubricant reservoir (5-4) that smooth block (30) endoporus and end face surround and high pressure back pressure cavity (5-3), adorn Sealing.
2. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: the bottom of described circular groove (50-21) is provided with the gas circuit (50-22) that is made of several apertures and is communicated with the high pressure back pressure cavity.
3. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: the sealing gasket in the described circular groove (50-21) is that the cross section is the П shape pad (60) of " П " shape.
4. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: described Sealing is to establish an adjustment gasket seal (70) that contains the not exclusively round endoporus (70-1) of straight flange; The inner edge surface shape of not exclusively round endoporus (70-1) is that the incomplete columniform outer edge surface shape of same crank throw (40-2) is corresponding; Adjusting gasket seal (70) is the outside that is nested in main shaft crank throw (40-2), and axially be installed in smooth block (30) below.Leave the gap between second end face of adjusting gasket seal (70) and the corresponding end face of stake body (50).Alternating floor lubricant film only between first end face of adjusting gasket seal (70) and the corresponding end face of smooth block (30).
5. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: the bottom shock mount of described circular groove (50-21).
6. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: the sealing gasket of dress is that the cross section is the flat gasket of rectangle in the described circular groove (50-21).
7. according to the scroll compressor of the band backpressure cavity sealing device of claim 1, it is characterized in that: described Sealing is to establish a gasket seal (80) that contains straight flange non-cylindrical (80-1), and it is corresponding with the inner edge surface shape that one of smooth block (30) contains the non-round endoporus of straight flange (30-1) that one of gasket seal (80) contains the outer edge surface of straight flange non-cylindrical (80-1); Movably press by the unthreaded hole (80-2) in gasket seal (80) center portion and to put on the end face of crank throw (40-2), on gasket seal (80), ring-shaped step is set vertically.
8. according to the scroll compressor of the band backpressure cavity sealing device of claim 4 or 7, it is characterized in that: the sealing that described adjustment gasket seal (70) and gasket seal (80) are located all belongs to the mechanical seal of end face contact-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118780A CN1084441C (en) | 1996-10-21 | 1996-10-21 | Backpressure cavity sealing device of vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118780A CN1084441C (en) | 1996-10-21 | 1996-10-21 | Backpressure cavity sealing device of vortex compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1180793A CN1180793A (en) | 1998-05-06 |
| CN1084441C true CN1084441C (en) | 2002-05-08 |
Family
ID=5125345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118780A Expired - Fee Related CN1084441C (en) | 1996-10-21 | 1996-10-21 | Backpressure cavity sealing device of vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1084441C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343529C (en) * | 2005-07-04 | 2007-10-17 | 兰州理工大学 | Vortex compressor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371600C (en) * | 2003-12-12 | 2008-02-27 | 乐金电子(天津)电器有限公司 | Vortex type compressor for preventing leakage of compressed gas |
| CN1963205B (en) * | 2005-11-12 | 2011-01-12 | 柯恩龙 | Vortex fluid machinery |
| GB0823184D0 (en) * | 2008-12-19 | 2009-01-28 | Edwards Ltd | Scroll compressor |
| CN113090527A (en) * | 2021-04-19 | 2021-07-09 | 重庆超力高科技股份有限公司 | Backpressure cavity seal structure, compressor and on-vehicle air conditioning system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060699A (en) * | 1990-10-01 | 1992-04-29 | 科普兰公司 | The scroll machine of band floating seal |
| CN2175841Y (en) * | 1993-10-25 | 1994-08-31 | 西安交通大学 | Coiled compressor with backpressure controlling mechanism |
| US5447418A (en) * | 1993-08-30 | 1995-09-05 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll-type fluid machine having a sealed back pressure chamber |
| CN1132826A (en) * | 1994-10-24 | 1996-10-09 | 株式会社日立制作所 | Vortex-type compressor |
-
1996
- 1996-10-21 CN CN96118780A patent/CN1084441C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060699A (en) * | 1990-10-01 | 1992-04-29 | 科普兰公司 | The scroll machine of band floating seal |
| US5447418A (en) * | 1993-08-30 | 1995-09-05 | Mitsubishi Jukogyo Kabushiki Kaisha | Scroll-type fluid machine having a sealed back pressure chamber |
| CN2175841Y (en) * | 1993-10-25 | 1994-08-31 | 西安交通大学 | Coiled compressor with backpressure controlling mechanism |
| CN1132826A (en) * | 1994-10-24 | 1996-10-09 | 株式会社日立制作所 | Vortex-type compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343529C (en) * | 2005-07-04 | 2007-10-17 | 兰州理工大学 | Vortex compressor |
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| Publication number | Publication date |
|---|---|
| CN1180793A (en) | 1998-05-06 |
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| CF01 | Termination of patent right due to non-payment of annual fee |