Adaptive defrost method

Details Adaptive defrost method Adaptive defrost method

2005-11-15

2005-11-15

Tapolcai, William E. (Department: 3744)

Refrigeration

Processes

Defrosting or frost inhibiting

C062S151000, C062S276000

Reexamination Certificate

active

06964172

ABSTRACT:
The accumulation period between defrost cycles of a refrigeration apparatus having a electrical defrost heater is calculated on the basis of energy expended to remove the ice from the coil during the previous defrost cycle. In this way, variations in the voltage level being delivered to the heater coil are taken into account and the degree of ice build-up on the coil between defrost cycles can be more accurately controlled.

REFERENCES:
patent: 4392358 (1983-07-01), Hicks
patent: 4432211 (1984-02-01), Oishi et al.
patent: 4723414 (1988-02-01), Hurutachi et al.
patent: 5295361 (1994-03-01), Novak et al.
patent: 5950439 (1999-09-01), Peterson et al.
patent: 2003/0131614 (2003-07-01), Jeong
patent: 2004/0244389 (2004-12-01), Denvir

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