PURPOSE: To provide a refrigerator with a defrosting chamber, capable of defrosting in a short period of time, especially in the refrigerator by a method wherein a heater is conducted continuously from the starting of defrosting to a time when the temperature of a bottom plate is risen to a predetermined temperature and when the same temperature has risen to the predetermined temperature, the rate of conduction of the heater is reduced for a period of time obtained by multiplying a time, required for rising to the predetermined temperature, by a first magnification and, thereafter, the rate of conduction of the heater is reduced further for a time obtained by multiplying the time, required for rising to the predetermined temperature, by a second magnification.
CONSTITUTION: Foods 45 to be defrosted are put on a defrosting tray 44 and the tray 44 is arranged on a bottom plate 41 in a defrosting chamber 15, then, a defrosting switch is thown. Then, a far-infrared ray heater 34 and a heater 42 are conducted continuously. When the defrosting operation is advanced and a temperature, detected by a temperature detector 43, has risen to a predetermined temperature, the heat generating capacity of the far-infrared heater 34 is reduced to the rate of conduction of 80% for a time (t1) after the continuous conduction time (to), then, the rate of conduction is reduced to 40% for a successive time (t2) and, thus, the rate of conduction is reduced stepwisely in accordance with the elapse of time. On the other hand, the rate of conduction of the heater 42 is 80% for a time (t1') after the continuous conduction time (to) and the same rate is reduced to 0% in a successive time (t2').
OHASHI YOSHINORI
SAKAGUCHI MIKIKO
