| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating cooker capable of detecting temperature of a pot put on a top plate with good precision. <P>SOLUTION: The induction heating cooker is composed of: a top plate 2 on which a pot 1 is placed; a heating coil 3 heating the pot 1, arranged under the top plate 2; an infrared-ray detection means 6 arranged under the top plate 2, detecting the infrared-ray emitted from a central part of a bottom of the pot 1; a magnetism prevention means 7 preventing the infrared-ray detection means 6 from an influence of magnetic field generated at the heating coil 3; a temperature detection means 8 detecting the temperature of the bottom of the pot 1 depending on the output of the infrared-ray detection means 6; and a control means 9 controlling the power supplied to the heating coil 3 in compliance with the output of the temperature detection means 8. The view field of the infrared-ray detection means 6 is narrowed. Since the magnetism prevention means 7 is arranged at outside of the view field, the temperature of the pot can be stably detected at all time, and heat-cooking with good precision can be carried out without receiving influence of the temperature from the magnetism prevention means 7 and disturbance light from outside, by receiving the infrared-ray only from an limited area at central part of the pot 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
