Scroll element having a relieved thrust surface

Details Scroll element having a relieved thrust surface Scroll element having a relieved thrust surface

1996-10-17

1998-08-11

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

057918872

ABSTRACT:
A scroll compressor (10) is disclosed which includes a fixed scroll element (12) and an orbiting scroll element (14). Each of the scroll elements has a planar surface (18, 24) extending from the wrap on the element to the peripheral edge of the element. A relief area (56) is formed in each of the scroll elements through the planar surface to move the effective pivot point of the intermediate pressure force counteracting the tangential gas force radially inwardly toward the centerline of the scroll elements. A reduction in friction forces is the result, as well as a decrease in the time necessary to work in the scroll elements.

REFERENCES:
patent: 3884599 (1975-05-01), Young et al.
patent: 5192202 (1993-03-01), Lee
patent: 5342183 (1994-08-01), Rafalovich et al.
patent: 5342184 (1994-08-01), Comparin et al.
patent: 5364247 (1994-11-01), Fukanuma et al.
patent: 5435707 (1995-07-01), Hirano et al.
patent: 5478219 (1995-12-01), Nardone et al.
patent: 5584677 (1996-12-01), Ishikawa et al.

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