Induction heating apparatus

H - Electricity – 05 – B

Patent

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Details

H05B 6/06 (2006.01) H05B 6/12 (2006.01)

Patent

CA 2276152

An induction heating or cooking apparatus comprises an inductive heating coil (L), means (CT) for sensing the current IS of an a.c. supply applied to the heating coil (L), means (VR) for selecting the desired heat output of the apparatus, means (APC) for comparing the sensed current with an output of the selecting means (VR), and means (RL1) for varying the voltage of the supply to a heating coil (L) in accordance with the value of an error signal output from the comparing means (APC). Thus, the temperature which the base of a cooking utensil (P) stood on the coil (L) reaches is independent of the material of the utensil.

La présente invention a trait à un appareil de cuisson ou de chauffage comprenant une bobine de chauffage par induction (L), un dispositif (CT) destiné à détecter le courant I¿s? provenant d'une alimentation en courant alternatif appliqué à la bobine de chauffage (L), un dispositif (VR) destiné à sélectionner la chaleur désirée produite en sortie par l'appareil, un dispositif (APC) destiné à comparer le courant détecté avec une sortie du dispositif de sélection (VR), un dispositif (RL1) destiné à faire varier la tension d'alimentation de la bobine de chauffage (L) en fonction de la valeur du signal d'erreur produit par le dispositif de comparaison (APC). Ainsi, la température atteinte par la base d'un ustensile de cuisson (P) placé sur la bobine (L) est indépendante du matériau de l'ustensile.

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