Electronic gas cooktop control with simmer system and method...

F - Mech Eng,Light,Heat,Weapons – 23 – N

Patent

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Details

F23N 5/20 (2006.01) F23N 1/00 (2006.01) F24C 3/12 (2006.01) F23N 5/10 (2006.01)

Patent

CA 2387843

An electronically activated gas cooktop control system, responsive to a touch- sensitive user interface, and capable of providing a predetermined range of cooking and simmer levels of BTU output, has two complementary heating modes of operation. A first heating mode of operation is provided to produce a wide selection of simmer levels of BTU output, by electronically sequencing a solenoid-operated modulating gas valve "on" and "off", at a predetermined level of flame. A second cooking mode of operation is provided by electronically modulating the level of flame, through use of a pulse-width- modulation (PWM) output signal to produce a wide selection of cooking levels of BTU output. An igniter system capable of insuring proper ignition of gas without generating harmful electromagnetic interference is also provided.

L'invention concerne un système de commande électronique de surface de cuisson au gaz, réagissant à une interface utilisateur tactile, capable de fournir une gamme prédéterminée de niveaux de cuisson et de mijotage de la sortie BTU, et qui comporte deux modes de chauffe complémentaires. Un premier mode de chauffe est conçu pour produire une grande variété de niveaux de chauffe de la sortie BTU, par mise en séquence électronique <= on >= et <= off >= d'une soupape de gaz modulante à fonctionnement solénoïde, à un niveau de flamme prédéterminé. Un second mode de cuisson est obtenu par modulation électronique du niveau de la flamme, grâce à l'utilisation d'un signal de sortie à modulation d'impulsions en durée pour produire une gamme importante de niveaux de cuisson de la sortie BTU. L'invention concerne également un système d'allumage pouvant assurer une bonne inflammation du gaz sans générer d'interférences électromagnétiques dangereuses.

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