Patent ID: 8212192

Claim:
An induction heating cooker, comprising: a top plate; an induction heating coil operable to perform induction heating of an object to be heated on the top plate; an inverter circuit operable to supply a high frequency current to the induction heating coil; an infrared sensor operable to output a detection signal of a magnitude corresponding to a temperature of the heated object, the infrared sensor including an infrared detection element and an amplifier, the infrared detection element being provided on a lower side of the top plate to detect an amount of infrared light radiated from the heated object, the amplifier being operable to amplify a signal detected by the infrared detection element; and a control unit operable to control an output of the inverter circuit based on an output of the infrared sensor, wherein the infrared sensor outputs an initial detection value having a substantially constant magnitude with respect to the temperature of the heated object when the temperature of the heated object is lower than a detection lower limit temperature, and outputs the detection signal having a magnitude and a rate of increase which become larger as the temperature of the heated object becomes higher in a vicinity of a control temperature range in which the control unit controls an output of the induction heating coil to perform temperature control of the heated object, and the control unit includes a storage unit operable to measure and store the initial detection value, and the control unit reduces the output of the induction heating coil or stops the heating when an increased amount of the output value of the infrared sensor with respect to the initial detection value stored in the storage unit becomes greater than or equal to a predetermined value.