Compressor with liquid injection

Details Compressor with liquid injection Compressor with liquid injection

1990-07-31

1991-12-31

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

62126, 62505, 417 32, F25B 4100

Patent

active

050760670

ABSTRACT:
A refrigeration system incorporating a scroll type compressor is disclosed which includes an injection system for injecting liquid refrigerant into the suction inlet opening of the compressor in response to excessive discharge gas temperature. A temperature sensor assembly is located within a well formed in the discharge chamber and serves to control actuation of the liquid injection system. In one embodiment the sensor assembly incorporates a pair of thermostats, one to control liquid injection and one to shut down the compressor in the event of continued overheating. In another embodiment a single thermostat having two tip temperatures is utilized. In a third embodiment a temperature sensing transducer is utilized in combination with a microprocessor.

REFERENCES:
patent: 2946203 (1960-07-01), Carver
patent: 3232519 (1966-02-01), Long
patent: 3276221 (1966-10-01), Crumley
patent: 3278111 (1966-10-01), Parker
patent: 3285030 (1966-11-01), Coyne
patent: 3396550 (1968-08-01), Cawley

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