Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1985-12-30
1987-10-20
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418142, 277204, F04C 1804, F04C 2700
Patent
active
047011157
ABSTRACT:
The present invention relates to a scroll type fluid displacement compressor, and more particularly, to an axial sealing mechanism for sealing the scrolls in an axial direction. A scroll type fluid displacement compressor includes a housing, a pair of scrolls each comprising an end plate and scroll element projecting from one surface of the end plate. Both scroll elements are interfitted at an angular and radial offset to make a plurality of line contacts. A groove is formed on the end surface of each scroll element and a seal element is placed within each groove. The axial thickness of one seal element is equal to or greater than the depth of the groove. The axial thickness of the other seal element is less than the distance between the bottom surface of the other groove and the end plate of the opposing scroll. Thus, one seal element is fixed in the axial direction and the other seal element is movable in the axial direction to effect a proper axial sealing of the scrolls while making it possible to more easily manufacture and assemble the scroll compressor.
REFERENCES:
patent: 4568256 (1986-02-01), Blain
Iizuka Jiro
Shimizu Shigemi
Sanden Corporation
Vrablik John J.
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