Scroll fluid machine, scroll member and processing method thereo

Details Scroll fluid machine, scroll member and processing method thereo Scroll fluid machine, scroll member and processing method thereo

1995-01-03

1996-09-10

Freay, Charles

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

2988802, F01C 104

Patent

active

055540171

ABSTRACT:
A scroll fluid machine in which, even if volute bodies on the orbiting side and on the fixed side are different in material from each other, the volute bodies can be brought to their respective strengths equal to each other, dimension can be miniaturized or reduced, and internal leakage is reduced so that an attempt can be made to improve performance. In the scroll fluid machine, a curve of either one of an orbiting outward curve and a orbiting inward curve of a volute body on the orbiting side is formed by an algebraic spiral expressed by the following equation in the form of polar coordinates r=a.multidot..theta..sup.k (here, r: radius vector, .theta.: angle of deviation, a: coefficient, k: exponent). This curve and any one of a fixed outward curve and a fixed inward curve of the volute body on the fixed side are arranged with a phase difference of about 180 degrees. Thicknesses of respective volute walls on the orbiting side and on the fixed side are adequately or suitably changed.

REFERENCES:
patent: 5103558 (1992-04-01), Herrick et al.
patent: 5122040 (1992-06-01), Fields
patent: 5151020 (1992-09-01), Mori et al.
patent: 5314317 (1994-05-01), Abe et al.

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