DEFROSTING CONTROL DEVICE FOR REFRIGERATOR

摘要

PROBLEM TO BE SOLVED: To provide a defrosting control device for a refrigerator capable of properly keeping a cooling condition in a refrigerator while surely defrosting a cooler. SOLUTION: The frost attached to the cooler 2a of a cooling device 2 is naturally unfrozen and defrosted during an off-period of the cooling device 2. A controller 6 controls the cooling device 2 to be switched on and off on the basis of a temperature-inside D detected by a temperature-inside sensor 3 to keep the temperature-inside D within a temperature range determined in accordance with a predetermined set value D0 by an operation switch 5a. The control part 6 continues an off-condition of the cooling means 2 even when the temperature-inside D is over an upper limit value D2 in a case when the frost attached to the cooler 2a is detected by a frost sensor 4 when the temperature-inside D reaches the upper limit value D2 within the temperature range by the switching-off of the cooling device 2, and the cooling device 2 is switched on when the temperature-inside D reaches a restricted value D3 higher than the upper limit value D2 under continuously detecting the frost of the cooler 2a. COPYRIGHT: (C)2003,JPO