Single-source gas actuation for screw compressor slide valve ass

Details Single-source gas actuation for screw compressor slide valve ass Single-source gas actuation for screw compressor slide valve ass

1997-07-15

1999-11-09

Vrablik, John J.

Refrigeration

Automatic control

Refrigeration producer

418 1, 4182012, 418DIG1, 417310, 417440, F25B 4902, F04B 4902, F04C 1816, F04C 2910

Patent

active

059791683

ABSTRACT:
The position of a screw compressor slide valve in a refrigeration system is controlled using compressor discharge gas sourced from a location where the gas is relatively oil-free and has undergone little or no pressure drop subsequent to its discharge from the compressor's working chamber.

REFERENCES:
patent: 4025244 (1977-05-01), Sato
patent: 4076461 (1978-02-01), Moody, Jr. et al.
patent: 4342199 (1982-08-01), Shaw et al.
patent: 4747755 (1988-05-01), Ohtsuki et al.
patent: 5509273 (1996-04-01), Lakowske et al.
Patent Abstracts of Japan, vol. 015, No. 134 (M-1099), Apr. 3, 1991 & JP 03 015693 A, Jan. 24, 1991.
Patent Abstracts of Japan, vol. 009, No. 333 (M-443), Dec. 27, 1985 & JP 60 164693 A, Aug. 27, 1985.

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