A method is provided for identifying cookware items placed on top of an induction cooktop having a plurality of coils. The method includes the following steps: acquire coverage factor information for each coil and collect it into a matrix; identify all local maxima in the matrix; find the coordinates of each of the local maxima as follows: when the local maxima is a single coil, the coordinates are those of the coil center, and when the local maxima is a region of contiguous coils, the coordinates are those of a centroid of the region; calculate distances from each coil to each of the coordinates of the identified local maxima; determine a minimum among the distances; classify the coils in clusters, based on the distances from the local maxima; and use the identified coil clustering to estimate the position, shape, size, and orientation of the cookware items.

Aspects of the present invention relate to an induction heating system for heating a component. The induction heating system includes a power module for outputting an alternating current, the power module being operable to output the alternating current at a variable supply frequency. A controller is provided to identify at least one resonant frequency of the alternating current supplied to the at least one induction element. The controller is configured to determine an operating temperature of the component in dependence on the at least one identified resonant frequency. Aspects of the present also relate to an induction heating controller; a component comprising an induction heating element; and to a method of heating a component by inductive heating.

Disclosed herein is an induction heating device that provides improved user experience and user interface, the induction heating device including a case, a plurality of working coils provided in the case, a cover plate which is coupled to an upper end of the case and where a first object subject to heating heated by at least one of the plurality of working coils is placed on an upper surface thereof, an input interface flatly buried into the upper surface of the cover plate, configured to receive a touch input from a user, and configured to display a specific image, a first control module configured to sense which one of the plurality of working coils has the first object subject to heating at an upper side thereof, a second control module configured to receive first position information on a position of the sensed first object subject to heating from the first control module, to determine a size of the first object subject to heating on the basis of the received first position information, and to receive first input information on a touch input supplied by the user in relation to heating conditions of the first object subject to heating from the input interface, and a memory configured to receive the first input information and first size information on the determined size of the first object subject to heating from the second control module, and to match and store the received first input information and the first size information.

Disclosed herein is an induction heating device that provides improved user experience and user interface, the induction heating device including a case, a plurality of working coils provided in the case, a cover plate which is coupled to an upper end of the case and where an object subject to heating heated by at least one of the plurality of working coils is placed on an upper surface thereof, an input interface flatly buried into the upper surface of the cover plate, configured to receive a touch input from a user, and configured to display a specific image, a first control module configured to sense which one of the plurality of working coils has the object subject to heating at an upper side thereof, and a second control module configured to control the input interface such that a coil image of each of the plurality of working coils is displayed on the input interface, wherein the second control module receives information on a position of the sensed object subject to heating from the first control module, determines whether the sensed object subject to heating is concentrically placed on the basis of the information on the position of the sensed object subject to heating, and controls the input interface on the basis of results of the determination and on the basis of the information on the position of the sensed object subject to heating such that a burner image for the object subject to heating is displayed on the input interface.

An aerosol provision device comprises a coil, a heater component arranged to heat aerosol generating material, wherein the heater component is heatable by the coil, an indicator assembly and a controller. The controller is configured to cause the coil to heat the heater component and cause the indicator assembly to indicate that the device is ready for use within a predetermined period of time after causing the coil to heat the heater component, wherein the predetermined period of time is less than about 60 seconds.

An induction cooktop and a control method for the induction cooktop, the induction cooktop includes: a processing module, a power supply module and a heating module; the power supply module is configured to supply power to the heating module. The heating module includes: a heating circuit configured to heat a pot and a detection circuit connected to the heating circuit. The processing module is configured to acquire a parameter value of a signal collection point of the detection circuit, determine, according to the parameter value, whether the pot is placed on the heating module, and control the heating circuit to heat the pot if it is determined that the pot is placed on the heating module, so as to provide a high heating efficiency.

The present disclosure provides a method for controlling a power of an electromagnetic cooking appliance and an electromagnetic cooking appliance. The electromagnetic cooking appliance includes a first coil disk and a second coil disk. Each of the first coil disk and the second coil disk corresponds to an independent resonance circuit. After obtaining a target power of the electromagnetic cooking appliance, a heating period of the electromagnetic cooking appliance is determined based on the target power, each heating period including at least one first heating time period and at least one second heating time period. The first coil disk is controlled to heat in the first heating time period, and the second coil disk to heat in the second heating time period, such that the first coil disk and the second coil disk are heated alternately to reduce an interference of harmonic current and voltage flicker.

A kitchen appliance is disclosed. The kitchen appliance comprises: a user interface control unit for interacting with a user; a plurality of driver units configured to control power supply to a plurality of coils; and the plurality of coils configured to heat one or more cookers based on electromagnetic induction effect, wherein each driver unit is configured to generate a control signal for a corresponding coil of the plurality of coils, and the control signal is used for controlling the power supply to the corresponding coil by controlling turn-on or turn-off of an insulated gate bipolar transistor (IGBT) in a single-pipe module.

The invention relates to a power supply circuit (1, 2) for a cooking device, in particular for an induction cooking device, more particularly for an induction hob (80), wherein the power supply circuit is comprising—a, in particular a single, frequency adapting unit (20), in particular filtering unit, for adapting at least one external supply signal (11, 12) into a single or at least one internal AC supply signal (15, 16; 17, 18),—and at least one, at least two, two, at least three or three DC signal generating units (25, 30, 35), each for converting the one or at least one internal AC supply signal (15, 16; 17, 18) into at least one signal component, in particular one or two signal components, of an internal DC supply signal (40, 41, 42, 43, 44; 45, 46) and —at least one, at least two, in particular two, least three, three, at least four or four, heating frequency generating units (50, 55), each for converting one or at least one DC supply signal (40, 41; 42, 43; 44, 46; 45, 46) supplied by at least one DC signal generating unit (25, 30, 35) into a heating frequency signal (61, 62, 63, 64) for supplying at least one heating unit (70, 75) with electrical power.

An induction heating cooker includes a first coil, a second coil, a third coil, a first inverter circuit configured to supply a first high-frequency current to the first coil, a second inverter circuit configured to supply a second high-frequency current to the second coil, a third inverter circuit configured to supply a third high-frequency current to the third coil, a controller, and a load determining unit configured to determine a material of a heating object, wherein when a material of the heating object placed above the first coil is a magnetic material and a material of the heating object placed above the second coil includes a non-magnetic material, the controller operates the first inverter circuit and the second inverter circuit, and stops an operation of the third inverter circuit, and controls such that a frequency of the second high-frequency current is higher than a frequency of the first high-frequency current.