Electric cooker having temperature warning means

Details Electric cooker having temperature warning means Electric cooker having temperature warning means

G - Physics

01

K

340/159

G01K 7/22 (2006.01)

Patent

CA 1207405

ABSTRACT An electric cooker having means for warning the user when one or more of the cooking surfaces is above a safe touching temperature comprises a glass ceramic cooking surface having one or more electrical heaters arranged on the underside of the cooking surface. A temperature monitoring device (30) is thermally coupled with at least one of said one or more heaters and comprises an auxiliary heater (42), for example of PTC material, a thermally responsive device (44) in the form of a thermistor, for example of PTC or NTC material, and a thermal buffer (72) positioned between the auxiliary heater and the thermistor. A neon lamp or a filament lamp (60) is provided for indicating when the thermistor is at or above a predetermined temperature.

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