Scroll fluid machine having surface coating layers on wraps ther

Details Scroll fluid machine having surface coating layers on wraps ther Scroll fluid machine having surface coating layers on wraps ther

1996-11-14

1998-09-08

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 56, 418 57, F01C 104, F01C 1706, F01C 2108, F01C 2110

Patent

active

058037233

ABSTRACT:
A wrap of an orbiting scroll member and a wrap of a fixed scroll member are each provided with a non-rigid surface coating layer having a predetermined thickness. An orbiting radius varying mechanism is provided between a driving shaft and the orbiting scroll member, thereby gradually increasing the orbiting radius of the orbiting scroll member at the initial stage of running, and thus positively allowing the surface coating layers to wear by rubbing against each other. A stopper mechanism is provided between the driving shaft and the orbiting scroll member to regulate the rotation angle of a variable crank relative to the driving shaft to a predetermined rotation angle, thereby preventing the surface coating layers from being excessively worn as the orbiting radius of the orbiting scroll member increases.

REFERENCES:
patent: 3986799 (1976-10-01), McCullough

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