Refrigerator and defrost control method thereof

Details Refrigerator and defrost control method thereof Refrigerator and defrost control method thereof

2008-07-10

2011-10-11

Norman, Marc (Department: 3744)

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

C062S153000, C062S176200, C062S234000

Reexamination Certificate

active

08033124

ABSTRACT:
Disclosed herein are a refrigerator and a defrost control method thereof that are capable of sensing an amount of frost formed on an evaporator based on a change amount of absolute humidity in the refrigerator to control a defrost operation. A defrost control method of a refrigerator including a storage chamber and an evaporator to cool the storage chamber, includes sensing absolute humidity in the storage chamber, determining an estimated amount of frost formed on the evaporator using time segments in which the absolute humidity in the storage chamber decreases, and controlling a defrost operation based on the estimated amount of frost. According to the present embodiments, it is possible to perform the defrost operation at the point of time for optimum defrost, thereby maximizing energy efficiency and cooling efficiency.

REFERENCES:
patent: 5666816 (1997-09-01), Jeong et al.
patent: 07260324 (1995-10-01), None
patent: 07-294100 (1995-11-01), None

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