To provide an induction heating cooker which can reliably detect existence or non-existence of a pan placed on a top plate.
The induction heating cooker comprises a top plate 2, a heating coil 3, inverter means 10 for supplying an electric power to the heating coil 3, an infrared sensor 17 for detecting a temperature of a pan bottom of a pan 30, a temperature sensor 15 for detecting a temperature of the pan bottom, infrared light-emitting means 18a for emitting infrared rays toward the pan bottom of the pan 30, infrared light-receiving means 18b for receiving infrared rays reflected by the pan bottom of the pan 30, existence/non-existence-of-pan detection means 20 for performing conversion based on an output from the infrared light-receiving means 18b into a signal for detecting existence or non-existence of the pan 30, control means 118 for controlling, when it is unable to detect existence or non-existence of the pan 30 by comparing an output value from the existence/non-existence-of-pan detection means 20 with a preliminarily built-in value, the inverter means 100 to supply the heating coil 3 with an electric power of a weaker heating power and determining that the pan 30 covers an optical sensor window 16 when the temperature sensor 15 indicates variation representing temperature rise.
HANASAKA TERUHIKO
SHOJI TETSUYA
KIMIHIRA ATSUSHI
| JP2008166107A | 2008-07-17 | |||
| JP2005149836A | 2005-06-09 | |||
| JP2010135191A | 2010-06-17 | |||
| JP2008027730A | 2008-02-07 | |||
| JP2002075624A | 2002-03-15 | |||
| JP2009218042A | 2009-09-24 | |||
| JP2007287465A | 2007-11-01 | |||
| JP2008293888A | 2008-12-04 | |||
| JP2009087883A | 2009-04-23 | |||
| JP2008166107A | 2008-07-17 | |||
| JP2005149836A | 2005-06-09 | |||
| JP2010135191A | 2010-06-17 | |||
| JP2008027730A | 2008-02-07 |
Yuji Toda
Takahiro Watanabe
Shigemi Iwasaki