Scroll type pump with wrap curve offset for thermal expansion

Details Scroll type pump with wrap curve offset for thermal expansion Scroll type pump with wrap curve offset for thermal expansion

1987-12-23

1988-09-27

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 83, 418150, F04C 1804, F04C 2904

Patent

active

047738359

ABSTRACT:
A scroll type pump has a fixed scroll and an orbiting scroll engaging therewith, wherein a curve of a wrap of either of the scrolls is offset inwardly or outwardly relative to a set curve so as to prevent formation of a gap between the wraps due to thermal expansion of the scroll wraps.

REFERENCES:
patent: 4382754 (1983-05-01), Shaffer et al.
patent: 4490099 (1984-12-01), Terauchi et al.

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