A cooking apparatus includes a cooking plate including a cooking area divided into a plurality of sub-areas; a plurality of induction heating coil groups installed at a bottom of the cooking plate to correspond to the plurality of sub-areas; and a plurality of drive assemblies configured to supply a driving current to the plurality of induction heating coil groups. The cooking apparatus includes a user interface configured to receive a compartment command that divides the cooking area into the plurality of sub-areas; a sub-assembly configured to determine the induction heating coil group corresponding to the sub-area in which a cooking vessel is placed when the compartment command is input; and a controller configured to control the drive assembly supplying the driving current to the determined induction heating coil group such that a driving current corresponding to a target temperature is distributed to an induction heating coil overlapping the cooking vessel.

An induction heating apparatus including a plurality of inverters configured with a plurality of types of switching topologies on a printed board assembly (PBA). The induction heating apparatus includes a cooking plate; a plurality of induction heating coils installed below the cooking plate and configured to generate a magnetic field; a plurality of driving circuits respectively connected to the plurality of induction heating coils and configured to supply a driving current to the corresponding induction heating coils; and a rectifier circuit configured to rectify AC power to supply the rectified AC power to the plurality of driving circuits. Each of the plurality of driving circuits may be connected in parallel to an output terminal of the rectifier circuit. The plurality of driving circuits may include at least one first driving circuit comprising one switching element and at least one second driving circuit comprising a plurality of the switching elements.

The present invention relates to an induction heating apparatus. In order to cope with various types of containers without increasing an operating frequency of an induction heating apparatus, the present invention compares a resistance value of a container with a predetermined reference resistance value, and determines an operating mode of a switching device according to a result of the comparison. According to the present invention, it is possible to use various types of containers without increasing an operating frequency of an induction heating apparatus, by adjusting a resonance frequency of a working coil according to a resistance value of a container used in the induction heating apparatus.

An induction heating type cooktop according to an embodiment of the present disclosure may comprise: a case; a cover plate which is coupled to an upper end of the case and has an upper plate portion having an upper surface on which an object to be heated is disposed; a working coil provided inside the case; an inverter for applying a voltage to the working coil; a thin film which is provided on the lower surface of the upper plate portion and is inductively heated by the working coil; and a magnetic container determination unit which determines whether a magnetic container is present on the upper surface of the upper plate portion on the basis of an output power according to an operating frequency of the inverter.

An induction heating-type cooktop include a case, a cover plate comprising an upper plate that is coupled to an upper end of the case and that is configured to seat an object to be heated on an upper surface of the upper plate, a working coil disposed in the case and configured to heat the object, a module base that is disposed at a lower surface of the upper plate and that includes a thin layer attached to a surface of the module base, and a thermal insulation material disposed between the module base and the working coil.

The invention relates to a hob comprising a transparent or semi-transparent hob plate (2) and multiple heating elements (3) arranged below said hob plate (2), the hob further comprising illumination means arranged below said hob plate (2) for providing light markings (4) at the upper side (2.1) of the hob plate (2), said light markings (4) indicating heating zones (5) associated with the heating elements (3), wherein the illumination means comprise a light box (10) with at least a bottom wall portion (11) and a pair of side wall portions (12), said light box (10) including one or more lighting elements (13) for illuminating an interior space (14) of the light box (10), wherein the light box (10) further comprises an upper portion (15) being adapted to emit light towards the hob plate (2) in order to provide said light marking (4) at the upper side of the hob plate (2).

A method for controlling a cooking hob including induction coils, wherein a heating process includes time cycles subdivided into time slots. The method includes: setting a requested power for each induction coil to be activated by a user, defining a group of induction coils that have the same requested power, determining a number of time slots given by the number of different requested powers, activating all groups of induction coils to be activated during a first time slot at a same current power for a calculated duration, and activating a part of groups of induction coils to be activated during a further time slot at the same current powers in each time slot for a calculated duration if more than one group of induction coils are defined, so that an average current power of each induction coil within the time cycle corresponds with the requested power for the induction coil.

A wireless induction heating system includes an induction heating device having a heating coil configured to generate a magnetic field and a wireless induction heating cooker disposed in an area formed by the heating coil and configured to perform cooking operation based on the magnetic field generated by the heating coil. The induction heating device and the wireless induction heating cooker can perform mutual data communication to control output of the heating coil and output abnormality information, based on a displacement state of the wireless induction heating cooker with respect to the induction heating device.

A wireless power transmission apparatus according to the present invention includes a coil which generates a high-frequency magnetic field upon reception of a high-frequency current, a support which supports the power receiving device within the high-frequency magnetic field, an inverter circuit which supplies the high-frequency current to the coil, and a controller which controls the driving of the inverter circuit. The controller performs a power transmission operation to transmit power to the power receiving device, if the impedance on the output side of the inverter circuit exhibits a resonant characteristic as the driving frequency of the inverter circuit is changed.

A smart table is disclosed. The smart table includes a plate, an inverter configured to convert direct current (DC) power into alternative current (AC) power and to supply the AC power, a coil unit disposed below the plate and including a plurality of working coils heated by the AC power, a radio frequency identification (RFID) reader configured to recognize an RFID tag of a home appliance placed on the plate and to receive information on the home appliance from the RFID tag, and a processor configured to drive one or more of the plurality of working coils as wireless power transmission coils to perform control to transmit wireless power to the home appliance based on the received information.