P.t.c. resistor sensor circuit

F - Mech Eng,Light,Heat,Weapons – 24 – C

Patent

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Details

F24C 7/08 (2006.01) F24C 7/06 (2006.01) F24C 15/10 (2006.01) H05B 3/74 (2006.01)

Patent

CA 2129887

Electrical heating apparatus (10) is used in an electric stove (R) having a glass/ceramic cooking surface (S). A pan (12) is mounted adjacent an underside of the cooking surface. An electrical heating element (20) installed in the pan heats a defined area (A) of the cooking surface when electrical current is applied to the element. A sensor (34) installed in direct contact with the cooking surface senses the temperature of the cooking area. A control unit (42), to which an output of the sensor is supplied, is responsive to the output to control current flow to the heating element. This allows the apparatus to respond to temperature changes at the cooking area to insure food is properly cooked.

Un appareil de chauffage électrique (10) utilisé dans un four électrique (R) comprend une surface de cuisson (S) en verre et céramique. Un bac (12) est placé en contigu du dessous de la surface de cuisson. Un élément de chauffage électrique (20) installé dans le bac chauffe une zone (A) définie de la surface de cuisson lorsqu'un courant électrique est appliqué à l'élément. Un capteur (34) installé de façon à être en contact direct avec la surface de cuisson détecte la température de la zone de cuisson. Une unité de contrôle (42) à laquelle sont transmises les données du capteur régule le courant qui passe dans l'élément chauffant, ce qui permet à l'appareil de répondre aux changements de température dans la zone de cuisson donnant ainsi l'assurance que la nourriture est bien cuite.

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