INDUCTION HEATING APPARATUS

• Main Authors: NISHIKOORI, Nobuharu, SASAGAWA, Masashi, OTAWARA, Masayuki, ONO, Masaki, YAGI, Yutaka, YOSHIDA, Taro, KANAGAWA, Tomoyuki
• Format: Patent
• Language: English; French; Korean
• Published: 14.05.2021
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION

An induction heating apparatus comprises: a coil; an inverter configured to provide a driving current to the coil; a current sensor for measuring the driving current of the coil; and a control unit for controlling the inverter so that the driving current follows a target current based on a user input. The control unit can maintain a switching operation of the inverter on the basis of the detection time of the driving current smaller than a reference current being less than the reference time, and can stop the operation of the inverter on the basis of the detection time of the driving current smaller than the reference current being equal to or greater than the reference time. L'invention concerne un appareil de chauffage par induction comprenant : une bobine ; un onduleur conçu pour fournir un courant d'excitation à la bobine ; un capteur de courant pour mesurer le courant d'excitation de la bobine ; et une unité de commande pour commander l'onduleur, de telle sorte que le courant d'excitation suive un courant cible sur la base d'une entrée d'utilisateur. L'unité de commande peut maintenir une opération de commutation de l'onduleur sur la base du temps de détection du courant d'excitation inférieur à un courant de référence qui est inférieur au temps de référence et peut arrêter le fonctionnement de l'onduleur sur la base du temps de détection du courant d'excitation inférieur au courant de référence qui est égal ou supérieur au temps de référence. 유도 가열 장치는, 코일; 상기 코일에 구동 전류를 제공하도록 구성된 인버터; 상기 코일의 구동 전류를 측정하는 전류 센서; 상기 구동 전류가 사용자 입력에 기초한 목표 전류를 추종하도록 상기 인버터를 제어하는 제어부를 포함한다. 상기 제어부는, 기준 전류보다 작은 구동 전류가 감지된 시간이 기준 시간보다 작은 것에 기초하여, 상기 인버터의 스위칭 동작을 유지하고, 상기 기준 전류보다 작은 구동 전류가 감지된 시간이 상기 기준 시간 이상인 것에 기초하여, 상기 인버터의 동작을 중지할 수 있다.