Device for controlling the internal compression in a screw compr

Details Device for controlling the internal compression in a screw compr Device for controlling the internal compression in a screw compr

1985-03-04

1989-06-27

Smith, Leonard E.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F04C 2908

Patent

active

048425010

ABSTRACT:
This invention relates to a device for controlling the internal compression in a screw compressor and to a screw compressor equipped with a device for internal compression control. In the compressor housing (10) an axially movable sliding vlave (17) for controlling the internal compression is located in paralllel with the rotors on the discharge side thereof. In the position yielding the highest internal compression, the sliding valve extends over the major part of the length of the rotors and outwardly over the inlet end plane (18) of the compressor.

REFERENCES:
patent: 3936239 (1976-02-01), Shaw
patent: 4042310 (1977-08-01), Schibbye
patent: 4388048 (1983-06-01), Shaw

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