Electric heating method

Details Electric heating method Electric heating method

1997-12-09

1999-11-02

Walberg, Teresa

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219453, 219451, H05B 368

Patent

active

059775238

ABSTRACT:
An electric heating method is described for use with a glass-ceramic top cooking appliance. A first sensor coil is provided in a heater associated with a first heating element and a second sensor coil is provided associated with a second heating element, the first and second sensor coils being adapted to provide first and second electrical output signals respectively. Changes in the first and second electrical output signals are monitored resulting from placement and removal of a metallic cooking utensil on and from the cook top and the ratio of change in the first electrical output signal to change in the second electrical output signal is determined. The first heating element is energised alone in accordance with a first predetermined value, or a first predetermined range of values, of the ratio, resulting from placement of a cooking utensil on substantially only an area of the cook top above the first heating element. Both the first and second heating elements are energised together in accordance with a second predetermined value, or a second predetermined range of values, of the ratio, resulting from placement of a cooking utensil on an area of the cook top above both the first and second heating elements.

REFERENCES:
European Search Report Oct. 30, 1998.

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