One variation of a system for cooking food includes: a griddle module including a lower plate configured to receive a food product and an upper plate arranged over the lower plate and configured to contact the food product; a set of induction stations, each induction station including a lower coil configured to inductively couple to the lower plate when the griddle module is arranged in the induction station and an upper coil configured to inductively couple to the upper plate when the griddle module is arranged in the induction station; a hub configured to support the lower plate and the upper plate between the upper and lower coils of the induction stations and to sequentially position the griddle module through the set of induction stations; and a controller configured to drive the upper and lower coils to heat the food product between the lower plate and the upper plate.

Disclosed are an induction heating device and a vessel sensing method of the induction heating device. The induction heating device determines whether a vessel is present in a heating region corresponding to a working coil using two sensing methods. In more detail, the induction heating device determines whether a vessel is present in the heating region by sequentially performing first vessel sensing based on a resonance current value of the working coil and second vessel sensing based on a sensing value obtained by a vessel sensor. It is possible to precisely sense a vessel by applying the two sensing methods as described above.

A system for generating an asymmetric magnetic field. The system includes a drive circuit and a stacked winding structure coupled to the drive circuit. The stacked winding structure includes a plurality of winding layers. The plurality of winding layers includes a first winding layer including a first conductive winding having first turns and a second winding layer including a second conductive winding having second turns ion. The plurality of winding layers is arranged to produce a first magnetic field at a first side of the stacked winding structure and a second magnetic field at a second side of the stacked winding structure when the drive circuit electrically drives the plurality of winding layers. The first magnetic field is greater than the second magnetic field.

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.

The invention relates to an induction hob comprising at least one switching element and at least one induction coil (3), the switching element providing an alternating current flow through said induction coil (3) and cooling means (4) providing an airflow through the induction hob for cooling said switching element and said induction coil (3). The induction coil (3) is arranged at a first side (5.1) of a first plate-shaped support element (5) and the switching element is arranged at a first side (6.1) of a second plate-shaped support element (6), wherein the first support element (5) and the second support element (6) are connected to one another and arranged at a distance (d) in order to form an air channel (7) between the first and second support element (5, 6) and wherein the cooling means (4) are arranged such that an airflow is provided through said air channel (7).

The present invention relates to an induction heating circuit for an induction heating cooker. The induction heating circuit for an induction heating cooker includes: one or more induction heating coils (111, 112 and 113) one or more resonance condensers (121, 122 and 123); one or more switching elements (Q1, Q2 and Q3); one or more switching drivers (131, 132 and 133); an on-time control unit (140); and a microcomputer (150) (=claim 1), whereby although the plurality of induction heating coils are provided on the single cooking tool, a configuration of the induction heating circuit can be simplified without any noise to thereby reduce the manufacturing cost can be reduced.

An induction cooking apparatus that includes a plate that is configured to accommodate a cooking vessel; a first coil that is located under the plate; a second coil that is located under the plate and adjacent to the first coil; and a temperature detector that is located on the plate and that includes: a resistor element having a resistance value that is changed based on a temperature of the cooking vessel that is inductively heated by the second coil is disclosed.

Apparatus for automatic and fast cooking of food comprising: a base structure (12) in the form of a vessel open at the top housing a vertical pressure cooker (10); said apparatus comprises a solenoid (13) positioned close to said cooker; said solenoid is positioned below the cooker and beside the cooker covering a height ranging from 50% to 70% of the total height of the cooker starting from the bottom; said solenoid is made of coils with variable pitch widening from bottom to top; said pressure cooker (10) comprises: a lid (15) having a closing system; a pressure release valve (30); a temperature measurement system (70-76); where said cooker operates at a temperature higher than 140° C.

The invention relates to a method for operating an induction hob (1), the induction hob (1) comprising a power circuit portion (2) with at least one switching element adapted to provide pulsed electric power to an induction coil (3) and a control entity (4) for controlling operating parameters of the switching element, the method comprising the steps of: performing a control loop with control cycles in order to detect coupling changes between the induction coil (3) and a piece of cookware, said control cycles comprising the steps of: receiving frequency information (f.sub.curr) and power information (P.sub.curr) at said control entity (4); calculating at least one relation coefficient (Ds′, Ds″) based on said frequency information (f.sub.curr) and said power information (P.sub.curr); and comparing said relation coefficient (Ds′, Ds″) with a relation coefficient boundary, thereby deriving a comparison result; deciding, based on the comparison result, whether to: perform a new control cycle of said control loop or whether to stop said control loop and said provision of pulsed electric power to the induction coil (3) and restart said control loop after updating an operating parameter of the switching element.

An induction heating cooker according to the present invention has a top plate on which a heater area indication indicating a mount position of to-be-heated object is formed, and a first coil and a second coil that are formed of an annular coil arranged below the heater area indication of the top plate, the second coil includes a first winding portion extending in a circumferential direction of the first coil, and a second winding portion spaced apart from the first winding portion and extending in the circumferential direction of the first coil, and the distance between the first winding portion and the top plate is different from the distance between the second winding portion and the top plate.