Apparatus and method for defrosting a heat exchanger in a refrig

Details Apparatus and method for defrosting a heat exchanger in a refrig Apparatus and method for defrosting a heat exchanger in a refrig

1983-06-01

1986-01-21

Bennett, Henry

Refrigeration

Processes

Defrosting or frost inhibiting

62278, 62198, F25B 4100

Patent

active

045650705

ABSTRACT:
An apparatus and method for providing a refrigeration circuit and for effecting defrost are disclosed. Multiple outdoor heat exchangers are utilized to effect defrost of one of the outdoor heat exchangers while the other serves as an evaporator. In the refrigeration circuit disclosed, the indoor heat exchanger is not utilized during defrost and the outdoor heat exchangers are separated such that one is defrosted while the other serves as an evaporator. The circuit may then be reversed such that the non-defrosted outdoor heat exchanger is then defrosted while the other heat exchanger serves as an evaporator. This refrigeration circuit allows for effective defrost of the outdoor heat exchangers without necessitating electric resistance heat nor the transfer of heat energy from the indoor air to the outdoor heat exchangers.

REFERENCES:
patent: 2998710 (1961-09-01), Reese
Bonhotal, Larry, Defrost How Hot Gas Does It, Mar. 1979, pp. 33 and 34.

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