Stoves and furnaces – Stoves – Cooking
Patent
1990-02-15
1991-04-02
Jones, Larry
Stoves and furnaces
Stoves
Cooking
431 27, F24C 308
Patent
active
050039601
ABSTRACT:
The electronic grill control employs a microprocessor-based circuit which monitors cooking temperature, cooking time, fuel level and the presence or absence of flame. The fuel level may be displayed alternately as a percentage or fraction of the full tank capacity or in terms of the burning time remaining in the tank. A dual electrode ignition circuit eliminates noise problems in the microprocessor circuitry by establishing the appropriate sparking voltage between the two electrodes instead of between a single electrode and the casting ground. A fuel presence sensor comprising one of the two electrodes measures resistance or conductance of the ionized gases within the flame to provide the microprocessor with an indication that the flame has failed to ignite or has blown out. All information is displayed on an alphanumeric display with audible alarms provided for certain conditions.
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Jones Larry
The Thermos Company, Inc.
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