Method and apparatus for controlling refrigeration systems

Details Method and apparatus for controlling refrigeration systems Method and apparatus for controlling refrigeration systems

1986-08-06

1988-04-12

Tanner, Harry

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62186, 62278, F25D 2106

Patent

active

047365943

ABSTRACT:
A method and apparatus for providing optimum control of a refrigeration system during both its cooling cycle and its defrost cycle. During the cooling cycle, the control system maintains operation of a fan for a predetermined period of time sufficient to fully evaporate the liquid refrigerant in the refrigeration system's evaporator coil. The control system initiates the defrost cycle only when the actual system parameters indicate the need to defrost. In the defrost cycle, the flow of hot gas and refrigerant is coordinated in a manner to minimize the amount of energy expended and to reduce thermal shock to the system, thereby eliminating unnecessary wear on the system components.

REFERENCES:
patent: 2430960 (1947-11-01), Soling
patent: 2492970 (1950-01-01), Carry
patent: 3377817 (1968-04-01), Petranek
patent: 4136730 (1979-01-01), Kinsey
patent: 4299095 (1981-11-01), Cassarino
patent: 4356703 (1982-11-01), Vogel

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