| 摘要 |
An induction heating cooker includes a top plate having an upper arranged to have a load pan placed over the upper surface and transmitting infrared radiation, a heating coil for inductionally-heating the load pan, a n inverter for supplying a high-frequency current to the heating coil, an infrared detector which detects infrared radiation emitted from the load pan and is located under the second surface of the top plate, a first temperatur e detector for detecting a temperature of the load pan based on an output of the infrared detector, a heating controller for controlling a power output from the inverter, a thermo-sensitive element for receiving heat from the top plate, and a second temperature detector for detecting a temperature of the load pan based on an output of the first thermo-sensitive element. The heating controller determines that the temperature of the load pan becomes stable if a condition that a change of the temperature detected by the first temperature detector is within a predetermined range for a predetermined period of time is satisfied. When the temperature detected by the first temperature detector does not satisfy the condition, the heating controller determines that the temperature of the load pan becomes stable based on the temperature detected by the second temperature detector. This induction heating cooker detects a temperature change of the load pan accurately by detecting an infrared radiation from the load pan, and detects the temperature of the load pan by the heat conduction from the pan even if ambient light enters.
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