An induction heater for a cook top comprising: a first electrically insulating sheet (1); a second electrically insulating sheet (2); one or more inductors (5) arranged on a same plane between the first sheet (1) and the second sheet (2), each inductor (5) comprising a single electrically conductive track defining a flat spiral coil; at least one magnetic flux concentrator (4) arranged on a plane under the second sheet (2); a metallic heat sink plate (3) arranged under the at least one magnetic flux concentrator (4), adapted to dissipate the heat produced by the one or more inductors (5).

An induction cooking apparatus includes a panel forming a cooking surface and a bottom surface. The cooking surface is configured to support a cooking utensil. A housing is in connection with and disposed beneath the cooking surface. The housing forms an enclosure having an internal cavity. The enclosure includes a first side and a second side opposite the first side. A plurality of induction coils is arranged in at least one linear array beneath the cooking surface. A beam structure includes a first end portion and a second end portion. The beam structure is configured to extend across the housing of the cooking apparatus from the first side to the second side and support the plurality of induction coils. A plurality of spring mechanisms connects the first end portion to the first side and the second end portion to the second side.

An induction cooktop includes a cooking surface operable to support cookware and a resonant circuit having a resonant frequency in the range of 40 kHz to 60 kHz. The resonant circuit includes a capacitor having capacitance of between 0.1 micro-Farads and 0.6 micro-Farads and a coil disposed under the cooking surface and configured to operate at a working frequency of between 50 kHz and 150 kHz. The induction cooktop includes an induction control circuit configured to power the resonant circuit at the working frequency.

An induction heater for a cooking surface. The induction heater includes an electrically insulating layer, at least one inductor defining a winding adapted to heat at least one cooking utensil, at least one sensor adapted to detect whether the at least one cooking utensil is placed above the cooking surface, and at least one magnetic flux concentrator. The at least one inductor and the at least one sensor are arranged on the electrically insulating layer. That layer is interposed between the at least one inductor and the at least one magnetic flux concentrator.

An induction heating cooker including a top plate; a substrate positioned on a bottom surface of the top plate; at least one heating coil on the substrate and configured to inductively heat a heating object, the at least one heating coil being sheet-shaped; and at least one sensor coil configured to detect a position of the heating object, wherein the at least one sensor coil is on the substrate so that the at least one heating coil and the at least one sensor coil are integrated into a single body.

An induction coil for a cooktop has a winding body in the form of a flat, spirally wound coil and at least four identical individual ferrite bodies therebelow. The ferrite bodies each have two regions, wherein a first, inner region is a stem region extending radially, and a second, outer region is a head region which adjoins the stem region and is wider in terms of angular degrees at its greatest width than the stem region at its greatest width. In terms of absolute width, it is over 50% wider than the stem region at its greatest width and projects radially beyond the winding body. The stem region widens radially in terms of absolute width from radially inside to radially outside, wherein it narrows radially in terms of angular degrees from radially inside to radially outside over a range of between 40% and 80% of the radius of the winding body or over a range of between 25% and 75% of the length of the ferrite body.

An induction heating circuit for a cooking appliance includes at least one induction coil configured to induce current in a cooking implement. At least one temperatures sensor is configured to measure a temperature proximate the cooking implement. An electrical circuit includes a substrate operably coupled to the at least one induction coil and the at least one temperatures sensor. The substrate of the electrical circuit forms a spring portion in connection with the at least one temperature sensor.

An induction range apparatus includes a controller determine whether the container is disposed on the working coil, and the container disposed on the working coil is heated through induction heating, in a container sensing mode, and configured to output a block signal so that induction power outputted from an inverter driver is prevented from being input into a first detector, in an induction heating mode; and a blocking part outputting the induction power input from the inverter driver to the working coil or preventing the induction power input from the inverter driver from being input into the first detector or outputting the sensing signal to the working coil, on the basis of any two or less of the input of the induction power from the inverter driver, the input of the unblock signal from the controller, and the input of the block signal from the controller.