Volume ratio control means for axial flow helical screw type com

Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone

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Details

417440, F01C 116, F04B 2900, F15B 13044

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044576811

ABSTRACT:
The high pressure end wall of an axial flow helical screw type compressor has a slide member which is movable transversely of the rotors for controlling the size of the discharge passage through the end wall and is controlled by sensing means responsive to the pressure at the end wall and in the discharge area in order that full compression which is substantially equal to the pressure at discharge may be obtained.

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patent: 4058988 (1977-11-01), Shaw
patent: 4140436 (1979-02-01), Schumacher
patent: 4222716 (1980-09-01), Shaw

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