| 摘要 |
PURPOSE:To foresee a thaw end time during thawing and to suitably thaw food by ringing a thaw buzzer before a predetermined time from the end of integrating a predetemined time of a thaw timer. CONSTITUTION:If it becomes a time before predetermined time (e.g. 5min) from predetermined time (e.g. 30min), a thaw timer 26 stores to set ON and to reset OFF in a thaw buzzer 25 in a RAN 18. The timer 26 is turned ON to integrate time. It outputs the states of a thaw heater 13 and the buzzer 25, but since the heater 13 is set to ON here, a transistor 21 is turned ON to conduct a relay coil 22 thereby to close a relay contact 23. Thus, the operations of the heater 13 and an auxiliary motor-driven blower 12 are continued to proceed thawing. The buzzer 25 turns a transistor 24 ON due to the ON state before predetermined time (e.g. 5min) of predetermined time (e.g. 30min) to ring the buzzer 25. |
