Method and apparatus for reducing scroll compressor tip leakage

Details Method and apparatus for reducing scroll compressor tip leakage Method and apparatus for reducing scroll compressor tip leakage

1990-01-16

1991-07-30

Vrablik, John J.

Rotary expansible chamber devices

Methods

418 552, 418 554, 418141, 277 53, 277 961, F04C 1804, F04C 2700, F16J 15447

Patent

active

050355899

ABSTRACT:
Leakage in a scroll wrap compressor is reduced by providing a roughened scroll wrap tip surface at the gap between the tip and the cooperating base so as to increase the frictional resistance to flow of fluid through the gap and to cause turbulence within the gap to further increase the resistance to the flow of fluid from the high pressure to the low pressure side across a scroll wrap tip. Various types of surfaces are shown for increasing the frictional resistance to flow such as knurling, grooving, cast cavities, metal particles and fibers and the like.

REFERENCES:
patent: 3660978 (1972-05-01), Hinckley
patent: 3965697 (1976-06-01), Beierwaltes
patent: 4059370 (1977-11-01), Gibson
patent: 4148494 (1979-04-01), Zelahy et al.
patent: 4227703 (1980-10-01), Stalker et al.
patent: 4411605 (1983-10-01), Sauls
patent: 4420162 (1983-12-01), Yanai et al.
patent: 4834400 (1989-05-01), Lebeck

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