Liquid injecting type oil-free screw compressor

Details Liquid injecting type oil-free screw compressor Liquid injecting type oil-free screw compressor

1992-02-27

1992-12-29

Bertsch, Richard A.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

With condition responsive control of non-working fluid

418 87, 418100, F01C 2104

Patent

active

051747413

ABSTRACT:
A liquid injecting type oil-free screw compressor is capable of preventing the generation of polymer in any part inside the compressor main body. A temperature controller detects the gas temperature in a discharge passage of the compressor main body, and controlling the degree of opening of the flow-rate control vale in such a manner as to control the injected liquid quantity to the inlet port for holding the gas temperature at a saturation temperature. A flow-rate controller controls the degree of opening of the flow-rate control valve to gradually change the flow rate of the liquid quantity from the injected liquid quantity to the liquid quantity at which the concentration of the liquid component at said inlet portion becomes a predetermined value. A selector switch for switches over the control function for controlling the degree of opening of the flow-rate control valve between the temperature controller which is operated in a transient state and the flow-rate controller, which is operated in a normal operating.

REFERENCES:
patent: 4180986 (1980-01-01), Shaw
patent: 4289461 (1981-09-01), van Oorschot et al.

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