Patent JPS6342122A successfully refreshed from Google Patents.
EP0322894A2
Expired / Lapsed
EP
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Scroll compressor
Assignee: Panasonic Holdings Corp
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Filing: 1988-12-28
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Granted: —
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Expires: 2008-12-28
Abstract
Abstract In a scroll compressor, a thrust bearing (20) is movably held and urged to support thrust force of an orbiting scroll member (18) against a fixed scroll member (15) within a predetermined stroke in the axial direction of the scroll members, thereby to always allow desirable minute gap and also allow to back against urge to reduce abnormal pressure in a compression chamber.
Inventors
- 👤 Katuharu Fujio
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 17:40
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/02; F04C18/0207; F04C18/0215; F04C27/00; F04C27/005; F04C23/00; F04C23/008
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
155 words
A scroll compressor comprising: a stationary case (1); a first scroll member (18) held by said case; a second scroll member (15) which is orbitably held from said case and to be engaged with said first scroll member, to form compression chambers (51a, 51b etc.); driving means (3,4) which is held by said case and makes orbiting motion to drive said second scroll member; supporting means (20,21,70) which is movably held and urged from said case to support thrust force of said second scroll member against said first scroll member within a predetermined stroke in an axial direction of said scroll members, the smallest gap between said supporting means and said first scroll member being larger than thickness of a part of said second scroll member put therebetween; and rotation-prevention means (24) which is movably held by said supporting means and engaged with said second scroll member to prevent said second scroll member from rotating.
Claim 2
Dependent Claim
155 words
A scroll compressor comprising: a stationary case (1); a first scroll member (18) held by said case; a second scroll member (15) which is orbitably held from said case and to be engaged with said first scroll member, to form compression chambers (51a, 51b etc.); driving means (3,4) which is held by said case and makes orbiting motion to drive said second scroll member; supporting means (20,21,70) which is movably held and urged from said case to support thrust force of said second scroll member against said first scroll member within a predetermined stroke in an axial direction of said scroll members, the smallest gap between said supporting means and said first scroll member being larger than thickness of a part of said second scroll member put therebetween; and rotation-prevention means (24) which is movably held by said supporting means and engaged with said second scroll member to prevent said second scroll member from rotating.
Claim 3
Dependent Claim
19 words
A scroll compressor in accordance with claim 1, wherein said first scroll member is fixed to said stationary case.
Claim 4
Dependent Claim
27 words
A scroll compressor in accordance with claim 2, wherein said supporting means is always urged to move toward said scroll member by utilizing pressure of compressed fluid.
Claim 5
Dependent Claim
38 words
A scroll compressor in accordance with claim 3, wherein a back pressure chamber (39) is formed on a disk-shaped plate (18c) of said second scroll member, and said back pressure chamber is communicated with a delivery chamber (2).
Claim 6
Dependent Claim
38 words
A scroll compressor in accordance with claim 3, wherein a back pressure chamber (39) is formed on a disk-shaped plate (18c) of said second scroll member, and said back pressure chamber is communicated with said compression chambers (51a,51b).
Claim 7
Dependent Claim
21 words
A scroll compressor in accordance with claim 3, 4 or 5, wherein said supporting means is preliminary urged by elastic force.
Claim 8
Dependent Claim
44 words
A scroll compressor in accordance with claim 5, further comprising a check valve (58) which is provided on the way from said back pressure chamber to said compression chambers and allows fluid to flow only from said back pressure chamber to said compression chambers.
Claim 9
Dependent Claim
54 words
A scroll compressor in accordance with claim 3, wherein said second scroll member has an annular groove (81) and an annular ring (82) mounted therein, a gap between said annular groove and said annular ring in the axial direction being larger than the maximum gap between said second scroll member and said supporting means.
Claim 10
Dependent Claim
25 words
A scroll compressor in accordance with claim 8, wherein widths of said annular groove and said annular ring are not uniform over whole circumference thereof.
Claim 11
Dependent Claim
33 words
A scroll compressor in accordance with claim 8 or 9, wherein said annular ring has elasticity to radially open outward, and outer circumference thereof tightly touches an outer circumferential surface of said groove.
Claim 12
Dependent Claim
35 words
A scroll compressor in accordance with claim 8 or 9, wherein said annular ring has a cut-off portion therein, a pair of opposing cut ends being in contact with each other in said annular groove.
Claim 13
Dependent Claim
76 words
A scroll compressor in accordance with claim 3, wherein said rotation-prevention means is of ring-shaped and disposed between a disk-shaped plate (18c) of said second scroll member and said supporting means, said rotation-prevention means comprising a pair of projections for slidably engaging with a pair of holes formed in said disk-shaped plate and a pair of parallelly opposing straight portions for slidably engaging with a pair of parallelly opposing straight portions formed in said supporting means.
Claim 14
Dependent Claim
21 words
A scroll compressor in accordance with claim 3, wherein said rotation-prevention means makes pump action by reciprocating in said supporting means.
Claim 15
Dependent Claim
140 words
A scroll compressor comprising: a stationary case (1); a first scroll member (18) held from said case; a second scroll member (15) which is orbitably held from said case and to be engaged with said first scroll member, to form compression chambers (51a, 51b etc.); driving means (3,4) which is held from said case and makes orbiting motion to drive said second scroll member; supporting means (220) which is fixed to said case to support thrust force of second second scroll member against said first scroll member, the smallest gap between said supporting means and said first scroll member being larger than thicknesss of a part of said second scroll member put therebetween; and rotation-prevention means (24) which is movably held by said supporting means and engaged with said second scroll member to prevent said second scroll member from rotating.
Claim 16
Dependent Claim
140 words
A scroll compressor comprising: a stationary case (1); a first scroll member (18) held from said case; a second scroll member (15) which is orbitably held from said case and to be engaged with said first scroll member, to form compression chambers (51a, 51b etc.); driving means (3,4) which is held from said case and makes orbiting motion to drive said second scroll member; supporting means (220) which is fixed to said case to support thrust force of second second scroll member against said first scroll member, the smallest gap between said supporting means and said first scroll member being larger than thicknesss of a part of said second scroll member put therebetween; and rotation-prevention means (24) which is movably held by said supporting means and engaged with said second scroll member to prevent said second scroll member from rotating.
References Cited (Backward Citations)
No citation records indexed.
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