Apparatus and method for controlling a rotary screw compressor

Details Apparatus and method for controlling a rotary screw compressor Apparatus and method for controlling a rotary screw compressor

1996-02-02

1998-04-14

Freay, Charles G.

Pumps

Processes

4182012, 417310, 13762522, F01C 116, F04B 4900

Patent

active

057384975

ABSTRACT:
A process and apparatus for controlling a rotary screw compressor capacity mechanism by manual pneumatic means. The apparatus compromises a specially placed rotary type cartridge valve enclosed in a valve body and housing. The assembly is attached via a flexible coupling to a rotating indicator rod that follows internal movement of the compressor's capacity piston mechanism. Manual movement of the assembly body opens valve ports that pneumatically position the compressor's internal capacity piston.

REFERENCES:
patent: 3088658 (1963-05-01), Wagenius
patent: 3656876 (1972-04-01), Kocher
patent: 4042310 (1977-08-01), Schibbye
patent: 5044894 (1991-09-01), Field et al.
patent: 5123822 (1992-06-01), Yoshimura
patent: 5135374 (1992-08-01), Yoshimura

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