Axially compliant scroll with rotating pressure chambers

Details Axially compliant scroll with rotating pressure chambers Axially compliant scroll with rotating pressure chambers

1990-09-24

1992-02-04

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F04C 1804

Patent

active

050855654

ABSTRACT:
One or more eccentrically located pressure pockets are defined between the orbiting scroll and a seal plate. The seal plate and pockets rotate while the orbiting scroll orbits. The pressure in the pockets provide a restoring moment relative to the overturning moment provided by the gas forces in addition to providing an axial bias for axial compliance. Because the moment is balanced, a reduced axial biasing force is necessary and thereby wear and friction losses are reduced. In the preferred embodiment, the seal plate is integral with the slider block.

REFERENCES:
patent: 4992032 (1991-02-01), Barito et al.
patent: 4993928 (1991-02-01), Fraser, Jr.

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