Patent ID: 10397987

Abstract:
The invention conceives an induction heating arrangement (1000) comprising four coils of a smaller diameter (1100, . . . , 1400) and a coil having a larger diameter (1500). The coils are arranged on a first plane (2100) and on a second plane (2200). In order to adapt a cooking area (1600) to the size of a pot, either the larger coil (1500) or one or more of the smaller coils (1100, 1400) are operated. A power supply circuitry (2400) is shared between the coils of the two planes and a selector (2300) takes care of disconnecting a respective coil of the plane of coils that is not operated in order to avoid coupling and interference and loss of energy. The guiding elements of the magnetic flux (1110, 1115, 1540) are used to confine the magnetic field in the area of the pot. The method of operating the induction heating arrangement takes care of efficient energy use, and an induction hob (3000) includes the induction heating arrangement.