Induction cooking device
US8729434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2008 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Aug 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2213/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction cooking device includes a heating coil performing induction heating of a cooking container placed on a top plate, an inverter circuit supplying high frequency current to the heating coil, an infrared sensor detecting an amount of infrared light radiated from the cooking container and outputting a detection signal based on the detected amount, a temperature sensor detecting a temperature of the cooking container by thermal conduction through the top plate, and a control unit controlling an output of the inverter circuit so that the outputs of the infrared and temperature sensors do not exceed the respective control temperature. The control unit judges whether or not the infrared sensor is normally detecting the temperature of the cooking container, and when it is judged that the infrared sensor is normally detecting the temperature of the cooking container, the control unit raises the control temperature of the temperature sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.