| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating cooker capable of detecting boiling state with high precision when boiling water. <P>SOLUTION: The induction heating cooker comprises a heating coil 3 heating a pot 1, a top plate 2 arranged on an upper part of the heating coil 3 for putting the pot 1 on it, an infrared-ray detection means 5 arranged on a lower surface of the top plate, detecting the infrared-ray irradiated from the bottom surface of the pot 1, a temperature detection means 6 detecting the temperature of the pot 1 from the output of the infrared-ray detection means 5, a control means 8 controlling the electric power to be supplied to the heating coil 3, and a boiling state detection means 7 detecting the boiling state in compliance with the output of the temperature detection means 6 and outputting a control signal to the control means 8. The boiling state can be detected with high precision as the temperature calculated at the temperature detection means 6 through the infrared-ray detection means 5 can exactly detect the change of temperature at the bottom surface of the pot. Further, as the power of the heating coil 3 is controlled by detecting the boiling state, the quantity of the evaporation of the water and power consumption can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
