Scroll compressor with a fluid thrust bearing

Details Scroll compressor with a fluid thrust bearing Scroll compressor with a fluid thrust bearing

1990-11-19

1992-07-28

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 76, 418 77, 418 79, 384123, F04C 1804, F04C 2902, F16C 3206

Patent

active

051336510

ABSTRACT:
A thrust bearing of a scroll compressor to be used as a fluid compressor for a refrigeration or air conditioning unit, is designed to resist the moment exerted on the orbiting scroll member, and tending to tilt the orbiting scroll member, so as to prevent the clearance between a thrust surface and a surface of the orbiting scroll member slidingly supported thereon from being reduced or the surfaces from making local contact. The thrust bearing uses wedge shaped grooves having tip end portions in which fluid is compressed by the orbiting motion of the scroll member to generate dynamic pressure at one side of the compressor. This dynamic pressure maintains the clearance between the thrust surface and the surface of the orbiting scroll member thereby stabilizing the movement of the orbiting scroll member.

REFERENCES:
patent: 2570682 (1951-10-01), Imbert
patent: 3891282 (1975-06-01), Tuffias
patent: 4699525 (1987-10-01), Mizobuchi et al.
patent: 4702683 (1987-10-01), Inaba et al.
patent: 4772188 (1988-09-01), Kimura et al.

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