Digital control valve for refrigeration system

Details Digital control valve for refrigeration system Digital control valve for refrigeration system

1997-09-15

1999-02-23

Wayner, William

Refrigeration

Processes

Assembling, charging, or repairing of refrigeration producer

62505, F25B 4500, F25B 3100

Patent

active

058732551

ABSTRACT:
The present invention provides a method and system for controlling and limiting the discharge temperature of a compressor of a refrigeration system. The invention is suitable for converting an existing refrigeration system which operates with one refrigerant to use with another refrigerant which can cause high discharge temperatures. The invention includes a simple four-part system-a temperature sensor to sense the discharge temperature, an injection valve for injecting liquid refrigerant into the suction gas line of the compressor, a fluid line for providing liquid refrigerant to the valve from the condenser and a digital controller for actuating the valve.

REFERENCES:
patent: 4258553 (1981-03-01), Kelly et al.
patent: 4974427 (1990-12-01), Diab
patent: 5076067 (1991-12-01), Prenger et al.
patent: 5189883 (1993-03-01), Bradford
patent: 5329788 (1994-07-01), Caillat et al.
patent: 5640854 (1997-06-01), Fogt et al.

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