| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator capable of reducing change in heating value of a component for powering a heater, shortening a period in which heating value reaches it maximum, and also shortening a period in which the power consumption of the heater becomes maximum.SOLUTION: A control circuit sets power supply rates of a plurality of heaters respectively according to predetermined conditions, and controls a plurality of switching elements so that the rates of power supply periods of the respective heaters to the totals of the power supply periods and no-power-supply periods of the respective heaters become equal to the set power supply ratios. The control circuit supplies electric power to the plurality of heaters in order so that a power supply period of a heater being currently powered does not overlap a power supply period of a heater to be powered next. For example, the control circuit controls the plurality of switching elements so that the heater to be powered next (for example, heater B) begins to be powered the moment the heater being currently powered (for example, heater A) finishes being powered. |
