Scroll compressor with reduced separating force between fixed an

Details Scroll compressor with reduced separating force between fixed an Scroll compressor with reduced separating force between fixed an

1998-04-07

1999-02-23

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

058737111

ABSTRACT:
A scroll compressor has structure in the tips of at least one of its wraps that reduces a force separating the scroll wraps. In one embodiment, the structure includes recesses formed in the tip such that low pressure fluid is tapped across the surface between the tip and the opposed scroll base. The low pressure fluid reduces the separating force between the scroll wrap. Separating walls may be formed to define separate recesses. In a second embodiment, an intermediate pressure fluid is tapped into a groove. Again, the low pressure reduces the separating force component across the scroll wrap. This invention is particularly valuable in the type of scroll wraps having thick wraps.

REFERENCES:
patent: 4204816 (1980-05-01), Bein
patent: 4437820 (1984-03-01), Terauchi et al.
patent: 4600369 (1986-07-01), Blain
patent: 4859159 (1989-08-01), Leptein
patent: 5035589 (1991-07-01), Fraser, Jr. et al.
patent: 5421707 (1995-06-01), Daniels

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