Refrigeration system

Details Refrigeration system Refrigeration system

1987-07-14

1989-05-16

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62149, 62227, F25B 4100

Patent

active

048297771

ABSTRACT:
A condenser is connected to an outlet of a compressor. An expansion valve is connected to the condenser. An evaporator is connected between the expansion valve and an inlet of the compressor. A sensor detects a condition of refrigerant at an outlet side of the evaporator. A variation in rate of refrigerant flow into the evaporator is detected. A control device determines a variation in the detected condition of refrigerant which occurs in response to the variation in the rate of refrigerant flow. The control device judges a quantity of refrigerant to be insufficient when the determined variation in the refrigerant condition is equal to or smaller than a reference value.

REFERENCES:
patent: 4106306 (1978-08-01), Saunders
patent: 4571951 (1986-02-01), Szymaszek
patent: 4616485 (1986-10-01), Gillett et al.

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