Cooking apparatus

Details Cooking apparatus Cooking apparatus

H - Electricity

05

B

309/83

H05B 1/02 (2006.01) F24C 15/10 (2006.01) H05B 3/68 (2006.01) H05B 3/74 (2006.01)

Patent

CA 1175090

ABSTRACT "COOKING APPARATUS" An electric cooker or cooking hob has a ceramic plate 2 on which there are a number of hot plate areas each heated by a respective annular heating element 4 disposed within an insulating housing 7. A temperature dependent resistor 9 is disposed below the hot plate area at the centre of focus of a reflector 8 which is arrange to focus radiant energy from the hot plate area on to the resistor 9 while at the same time shielding the resistor 9 from direct radiation from the electric heating element 4. The signal derived from the resistor 9 is a measure of the temperature of the hot plate and can be used to provide a thermal tripping function to prevent over-heating of the hot plate area and/or to- carry out closed loop control of the temperature of the hot plate area. The reflector 8 may be replaced by a shield which shields the resistor 9 from direct heating by the heater. A further annular heating element surrounding the element 4 may be provided, with the control circuitry enabling either the element 4 alone or element 4 plus the outer element to be energised.

372248

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