Electric heating – Metal heating – Of cylinders
Patent
1979-12-28
1982-03-09
Rubinson, Gene Z.
Electric heating
Metal heating
Of cylinders
219 1077, 219 1067, 219518, 340686, 324260, 99DIG14, H05B 612
Patent
active
043191096
ABSTRACT:
A sensor arrangement for an induction heating apparatus which monitors the position of a cooking utensil on a work surface and disables an inverter circuit powering a work coil if the utensil is located at an off-center position with respect to the coil, or if no utensil is present upon the cooking surface. The sensor arrangement comprises a plurality of sets of sensors at successively larger distances from the center of the work surface. Each set comprises a plurality of sensors arranged on an imaginary circle substantially equidistant from each other. Each sensor operates to provide an indication of the presence or absence of a utensil directly above the sensor. The sensors are monitored by a logic arrangement which indicates whether a utensil is properly centered, based on the fullness or degree of activation of the various sets. If the utensil is not properly positioned, the inverter is disabled and a signal advises the user of this condition. Additionally, the logic circuit determines the size of a properly positioned utensil and generates a signal which may be utilized to alter the output of the work coil in accordance therewith.
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General Electric Company
Lacomis Bernard J.
Leung Philip H.
Reams Radford M.
Rubinson Gene Z.
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