Patent ID: 8916808
Filing Date: 2014-12-23
Classification: H05B

Abstract:
1. An inductive heating cooking device comprising: a top plate on which a cooking container is placed; a heating coil to which a high-frequency current is applied to generate an induction magnetic field for heating the cooking container; an input unit configured to receive a command for keeping a temperature of the cooking container at a constant temperature; an infrared ray sensor configured to detect an infrared ray energy radiated from the cooking container through the top plate; and a control unit configured to control the high-frequency current to be applied to the heating coil based on an output of the infrared ray sensor so as to keep the temperature of the cooking container at the constant temperature according to the command received by the input unit, wherein the input unit further includes a constant cooking material temperature switch configured to receive a command for keeping a temperature of a cooking material in the cooking container at the constant temperature, the control unit further includes a cooling time determination unit configured to determine a cooling time for stopping heating, depending on the temperature of the cooking container when the temperature switch is operated, the cooling time determination unit is further configured to determine the cooling time necessary for absorbing a difference in the temperature of the cooking container and the temperature of the cooking material based on the output of the infrared ray sensor; when the temperature switch is operated, the control unit stops the heating during the cooling time determined by the cooling time determination unit, and controls the high-frequency current to be applied to the heating coil, by reference to an output value of the infrared ray sensor after a lapse of the cooling time.