An induction heating type cooktop according to an embodiment of the present disclosure includes: a case; a cover plate configured to be coupled to an upper end of the case and provided with an upper plate portion on which an object to be heated is disposed; a thin film configured to be coated on the upper plate portion and having an opening in a center thereof; a working coil provided inside the case and including a first working coil and a second working coil; and at least one inverter configured to be driven to allow electric currents to flow through the first working coil and the second working coil, wherein a direction of the electric current flowing through the first working coil is the same as or different from a direction of the electric current flowing through the second working coil according to the object to be heated.

An induction heating device includes a case, working coils, a cover plate, an input interface, a first control module configured to detect one or more of the working coils at a position of an object seated on the cover plate, a second control module configured to receive information on the position of the object and control the input interface to display an image of a heating zone, and light emitting elements disposed below a periphery of each of the plurality of working coils. The second control module is configured to analyze an arrangement form of the one or more of the working coils based on the information on the position of the object, and control driving of at least one of the light emitting elements based on a result of analyzing the arrangement form.

A wireless power transmission apparatus including a plurality of cooking zones, a communication interface to communicate with a cooking appliance, an output interface, a wireless power transmitter comprising a plurality of working coils corresponding to the plurality of cooking zones, and an inverter circuit, and at least one processor configured to: control, upon detecting a first wireless communication signal transmitted from the cooking appliance, the inverter circuit to drive the plurality of working coils to generate a magnetic field according to a plurality of power transmission patterns; receive a second wireless communication signal from the cooking appliance, including information regarding the cooking zone detected at a location of the cooking appliance; and based on the second wireless communication signal, output, through the output interface, the information regarding the cooking zone in which the cooking appliance is located.

A cooking article detection system for an induction cooktop having a first power-delivery induction coil includes a first detector coil overlying the first power-delivery induction coil and including a first conductive element revolving continuously around a centroid in a first tangential direction to define a shape of the first coil that extends in a first linear direction and a second linear direction along a plane and a second detector coil overlying the first power-delivery coil and including a second conductive element connected with the first detector coils and revolving continuously around a centroid in a second tangential direction, opposite the first tangential direction. The second detector coil is linearly arranged with the first detector coil and is spaced apart therefrom in the second linear direction. A controller drives the first and second detection coils, simultaneously, with a low-voltage, high frequency detection signal, and measures a voltage across the first and second detection coils to identify a cooking article on the induction cooktop.

In a method for operating a cooktop having a cooktop plate and adjacent heating means arranged thereunder along a straight line, and a pan detection means for detecting a relative coverage of each heating means by cooking vessels placed thereover, it is detected in a preceding step over which of the heating means a cooking vessel has been placed and thus that a relative coverage is present. In a subsequent step, the pan detection means is used to detect how great is the relative coverage of each covered heating means, and from this result and a comparison of these results for each heating means a case analysis is performed into one of several cases. For a 1st case, in which it is detected for the three heating means arranged along the straight line, that the relative coverage of the middle heating means is less than the relative coverage of the other two adjacent heating means, it is determined that no cooking vessel has been placed over the three heating means which contiguously covers all three heating means, but rather that at least two cooking vessels have been placed over the three heating means.

An electromagnetic cooker includes: a plane section that faces a bottom face part of a cooking pot when the cooking pot is placed; a frame body section that is erected from the plane section and houses the cooking pot to face a side face part of the cooking pot when the cooking pot is placed; a first heating section that is provided in the plane section and heats the bottom face part of the cooking pot by an induction heating method; and a second heating section that is provided in the frame body section and heats the side face part of the cooking pot by a method different from the induction heating method.

An induction heating type cooktop includes a cover plate that is coupled to a top of a case and that includes an upper plate configured to seat an object to be heated, a working coil disposed inside the case and configured to heat the object, an insulator disposed between a bottom surface of the upper plate and the working coil, and a thin film that is disposed on at least one of a top surface of the upper plate or the bottom surface of the upper plate and that includes a plurality of sub-films that are arranged about a central portion of the thin film. An outer boundary of one of the plurality of sub-films is positioned radially outward of an outer boundary of another of the plurality of sub-films relative to the central portion of the thin film.

An induction heating type cooktop according to an embodiment of the present disclosure may include a case; a cover plate configured to be coupled to the upper end of the case and provided with an upper plate portion on which an object to be heated is disposed; a thin film configured to be coated on the upper plate portion; a first working coil and a second working coil provided inside the case; an inverter configured to be connected to the first working coil; and a first switch configured to be connected between the first working coil and the second working coil. The first switch may determine whether the first working coil and the second working coil are connected in series.

Disclosed is a support structure for an induction heating device that includes a working coil configured to heat an object. The support structure includes: a housing including an upper surface that is recessed do inward and that is configured to seat the object; a repeating coil that is located inside of the housing, that is configured to generate magnetic induction or magnetic resonance with the working coil, and that is configured to heat the object on the upper surface of the housing based on magnetic induction or magnetic resonance with the working coil; and a compensation capacitor located inside of the housing and connected to the repeating coil, where the compensation capacitor is configured to control output of the repeating coil.

The present invention relates to an induction cooking hob (10) with a plurality of induction coils (16). The induction cooking hob (10) comprises a cooking surface (12) and a control unit. The cooking surface (12) includes a cover plate. The induction coils (16) are arranged side-by-side according to a predetermined scheme and below the cover plate. At least one induction coil (16) is marked by an identification symbol (18). The identification symbol (18) includes a first element (20) and a second element (22), wherein the first element (20) extends beyond the diameter of the corresponding induction coil (16) and the second element (22) marks the diameter of said induction coil (16).