Method of circulating refridgerant for defrosting and refrigerat

Details Method of circulating refridgerant for defrosting and refrigerat Method of circulating refridgerant for defrosting and refrigerat

1997-05-30

1999-06-29

Tapolcai, William E.

Refrigeration

With means preventing or handling atmospheric condensate...

Means utilizing heat developed by refrigeration producer

623245, F25B 4702

Patent

active

059162546

ABSTRACT:
A method of circulating a refrigerant for defrosting comprises the steps of changing a switching valve installed at a discharge pipe and a suction pipe of a compressor to a defrosting mode according to a control signal from a controller; and directly transferring the refrigerant compressed to a high-temperature and high-pressure gas at the compressor to an evaporator to remove a frost formed on the evaporator. A refrigerator having a compressor, a condensor, a capillary tube and an evaporator, in which a refrigerant circulates through the compressor, the condensor, the capillary tube and the evaporator sequentially, in a refrigerating mode to perform cooling, comprises a switching valve installed at a discharge pipe and a suction pipe of the compressor, for changing a circulation direction of the refrigerant from the compressor to the evaporator, in a defrosting mode; and a controller for selectively controlling the switching valve to be switched to the defrosting mode or the refrigerating mode.

REFERENCES:
patent: 2878654 (1959-03-01), Kramer
patent: 3167930 (1965-02-01), Block et al.
patent: 3190079 (1965-06-01), Lauer
patent: 3309888 (1967-03-01), Jacobs
patent: 4343157 (1982-08-01), Hattori

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