Patent Document ID: 5483804
Application ID: 08218598
Patent Flag: 1

Claim One:
1. A control apparatus for controlling a defrost operation of a refrigerator having a defrost device, comprising: counting means for counting a number of opening/closing times of a door for each of a plurality of time zones of one day; time number memory means for storing the number of opening/closing times of the respective time zones, said time number memory means including a storage area for storing the number of opening/closing times of the respective time zones of one day; index setting means for setting indexes of the respective time zones in accordance with the number of opening/closing times of the respective time zones, said index setting means setting said indexes in accordance with the number of opening/closing times of one day; defrost signal generating means for generating a defrost on/off signal for controlling said defrost device on the basis of said indexes; and first determining means for determining whether or not a sudden phenomenon occurs on the basis of the number of opening/closing times and the indexes of the respective time zones; wherein said index setting means includes renewing means for renewing the indexes only when it is determined that no sudden phenomenon occurs by said first determining means.