| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an induction heating cooker which is insusceptible to a disturbance light, dirt on a top plate and dirt on a heating object, and can control a temperature of the heating object by an infrared sensor with a simple structure. <P>SOLUTION: An infrared sensor 26 outputs an initial detection value of approximately constant greatness with respect to a temperature of a heating target 20 when the temperature of the heating target 20 is below a lower detection limit temperature. The infrared sensor 26 outputs a detection signal having an amplitude and an increase rate increasing with increase in temperature of the heating target 20 near a control temperature range. A control section 29 includes a storage section 29a for storing a predetermined value defined as an initial detection value, reduces output power of the induction heating coils 21a, 21b or stop the heating when increment of output value with respect to the initial detection value output from the infrared sensor 26 exceeds a predetermined value. Further, when an output value from the infrared sensor 26 falls below the initial detection value, the control section 29 replaces the initial detection value stored in the storage section 29a with the output value from the infrared sensor 26 that falls below the initial detection value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
