Variable liquid refrigerant injection port locator for screw com

Details Variable liquid refrigerant injection port locator for screw com Variable liquid refrigerant injection port locator for screw com

1983-11-22

1985-05-07

Gluck, Richard E.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working and working fluids intermix in working chamber

418201, 417310, F01C 2106, F01C 116

Patent

active

045155402

ABSTRACT:
An automatic variable volume ratio screw compressor has a plurality of ports for the injection of liquid refrigerant into the interlobe volume. These ports communicate with the interlobe volume at different effective distances from the discharge port so that the injection of liquid refrigerant may be done at the latest possible time during compression for effective use of the refrigerant, and without risking exposure to the open discharge port.
The selection of the port is done automatically in response to the instantaneous internal volume ratio.

REFERENCES:
patent: 3432089 (1969-03-01), Schibbye
patent: 3738780 (1973-06-01), Edstrom
patent: 3795117 (1974-03-01), Moody, Jr. et al.
patent: 3869227 (1975-03-01), Kocher et al.
patent: 3874828 (1975-04-01), Herschler et al.
patent: 3885402 (1975-05-01), Moody et al.
patent: 3913346 (1975-10-01), Moody, Jr. et al.
patent: 4375156 (1983-03-01), Shaw

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