Invention Grant
- Patent Title: Induction heating cooker
- Patent Title (中): 感应加热煲
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Application No.: US13142205Application Date: 2009-11-30
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Publication No.: US09055615B2Publication Date: 2015-06-09
- Inventor: Kenji Watanabe , Takahiro Miyauchi , Tomoya Fujinami , Hiroshi Tominaga
- Applicant: Kenji Watanabe , Takahiro Miyauchi , Tomoya Fujinami , Hiroshi Tominaga
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Brinks Gilson & Lione
- Priority: JP2008-332564 20081226; JP2009-148603 20090623
- International Application: PCT/JP2009/006475 WO 20091130
- International Announcement: WO2010/073490 WO 20100701
- Main IPC: B23K1/002
- IPC: B23K1/002 ; B23K1/015 ; B23K3/00 ; H05B6/06 ; B23K26/34 ; B23K9/173

Abstract:
The present invention provides an induction heating cooker, which is structured to cut off visible light being incident upon an infrared sensor, yet being capable of more accurately sensing any abnormality of the infrared sensor before heating is started. To this end, the induction heating cooker includes a sensor failure sensing-purpose light emitting portion that emits visible light for sensing any failure of an infrared sensor, a visible light cutting filter provided on a surface of a printed circuit board holding the infrared sensor so as to cover the field of view of the infrared sensor, and a control unit that limits the output of an inverter circuit supplying a high-frequency current to a heating coil when the output of the infrared sensor is equal to or less than a threshold value in a situation where the sensor failure sensing-purpose light emitting portion is lit up. The infrared sensor receives the visible light from the sensor failure sensing-purpose light emitting portion to irradiate inside the visible light cutting filter.
Public/Granted literature
- US20110259877A1 INDUCTION HEATING COOKER Public/Granted day:2011-10-27
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