Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1989-09-15
1991-08-06
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418150, F01C 104
Patent
active
050372793
ABSTRACT:
A scroll fluid machine in which a stationary scroll member and an orbiting scroll member each have an end plate and involute wrap on said end plate and mesh with each other. A winding-start portion of the wrap has such a section such that a base thereof is thick and the tip thereof is thin, with a curve of an inside line at each of the bases of the wraps is made as thick as possible while avoiding mutual interference between the wrap of fixed scroll member and the wrap of orbiting scroll member. A curve of an inside line at each of tips of the wraps has such a shape that it gradually thinned toward an inner periphery end thereof, and a section of each wraps in the wrap axial direction has such a shape that it is gradually reduced in thickness from the base toward the tip.
REFERENCES:
patent: 4594061 (1986-06-01), Terauchi
patent: 4666380 (1987-05-01), Hirano et al.
patent: 4678415 (1987-07-01), Hirano et al.
Arata Tetsuya
Ibaraki Yoshiro
Okamoto Jyoji
Shiibayashi Masao
Suefuji Kazutaka
Hitachi , Ltd.
Vrablik John J.
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