EP 0534891 B1 19960417 - Scroll compressor with dual pocket axial compliance
Title (en)
Scroll compressor with dual pocket axial compliance
Title (de)
Spiralverdichter mit Doppelkammer zum axialen Ausgleich
Title (fr)
Compresseur à volutes avec chambre double de compensation axiale
Publication
Application
Priority
US 76369191 A 19910923
Abstract (en)
[origin: EP0534891A1] Improved axial compliance in a scroll compressor 10 between a fixed scroll 11 and an orbiting scroll 13 is achieved by providing at least one dynamic back pressure chamber 25 disposed behind the orbiting scroll 13. A pressurized fluid is bled from a selected one of compression pockets 19 through a port 21 formed in the orbiting scroll 13 into the dynamic back chamber 25 to provide varying on sub-cycle basis back pressure to reduce friction between the fixed and orbiting scrolls. A static back pressure chamber 27, also disposed behind the orbiting scroll 13, may be provided into which pressurized fluid is bled from a selected one of the compression pockets 19 to provide an additional back pressure on the scroll 13 which is substantially constant over the cycle. <IMAGE>
IPC 1-7
IPC 8 full level
F04C 18/02 (2006.01); F04C 27/00 (2006.01); F04C 29/12 (2006.01)
CPC (source: EP KR)
F04C 18/02 (2013.01 - KR); F04C 27/005 (2013.01 - EP)
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0534891 A1 19930331; EP 0534891 B1 19960417; AU 2529592 A 19930325; AU 650570 B2 19940623; BR 9203702 A 19930420; DE 69209955 D1 19960523; DE 69209955 T2 19961024; JP 3004483 B2 20000131; JP H05202865 A 19930810; KR 930006329 A 19930421; KR 960004246 B1 19960328; MX 9205379 A 19930730; TW 223674 B 19940511
DOCDB simple family (application)
EP 92630087 A 19920917; AU 2529592 A 19920922; BR 9203702 A 19920923; DE 69209955 T 19920917; JP 25450292 A 19920924; KR 920017230 A 19920922; MX 9205379 A 19920922; TW 81107275 A 19920916