Method for preventing formation of ice on damper in refrigerator

Details Method for preventing formation of ice on damper in refrigerator Method for preventing formation of ice on damper in refrigerator

1999-03-30

2000-10-03

Doerrler, William

Refrigeration

Automatic control

Of external fluid or means

F25D 1704

Patent

active

061256412

ABSTRACT:
Method for preventing formation of ice on a damper in a refrigerator, comprising the steps of (1) driving a compressor and a fan and opening baffles if a freezing room temperature is lower than a freezing room reference temperature and a chilling room temperature is lower than a chilling room reference temperature, (2) comparing the chilling room temperature to the chilling room reference temperature, to close the baffles if the chilling room temperature is lower than the chilling room reference temperature, (3) comparing the freezing room temperature to the freezing room reference temperature, to stop the compressor and the fan if the freezing room temperature is lower than the freezing room reference temperature, (4) comparing an outside temperature of the refrigerator to an outside reference temperature, to return back to the step (1) if the outside temperature of the refrigerator is higher than the outside reference temperature, and determining chilling room door of being opened if the outside temperature of the refrigerator is lower than the outside reference temperature, and (5) comparing a temperature difference before and after opening/closing of the chilling room door to a given reference temperature, to return back to the step (1) if the temperature difference is lower than the reference temperature, and to open the baffles of the damper and to drive the fan for a given time period if the temperature difference is higher than the reference temperature.

REFERENCES:
patent: Re27990 (1974-04-01), Rivard et al.
patent: 4852361 (1989-08-01), Oike

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