According to an embodiment, an electric range includes a core frame. The core frame includes a withdrawal portion on a top surface thereof, formed by removing a portion of a guide rail. The withdrawal portion is configured to guide withdrawal of a working coil to outside of the core frame. A portion of the working coil is disposed on the withdrawal portion. Thus, the number of windings of the working coil around the guide rail of the core frame, a total winding length of the working coil, and a winding range of the working coil is easily adjusted.

An electric range includes a heating part configured to heat an object based on an electromagnetic interaction. The heating part may include a core frame having a plurality of channels disposed radially on a lower surface thereof and a plurality of ferrite cores mounted onto the channels and disposed under the core frame. The core frame include a plurality of air gaps disposed between the plurality of channels. The plurality of air gaps are disposed radially, and the plurality of air gaps connect a center of the core frame and an edge of the core frame.

A cooktop appliance apparatus for use in cooking includes a controller for controlling operation of the fan system based on an average power level supplied to a heating system, and based on a temperature measure associated with one or more subsystems. The appliance includes a hardware-implemented safety module having two or more temperature actuated safety circuits. The appliance includes a user interface adapted to receive a user input with respect to operating parameters of the heating system, the user input including a heating control mode and a set temperature. The appliance includes a controller adapted to identify a cooking vessel on an induction cooktop.

A camera module includes a liquid lens; a first connection substrate disposed on one of a top or a bottom of the liquid lens; a second connection substrate disposed on a remaining one of the top or the bottom of the liquid lens; a temperature sensor configured to sense a temperature of the liquid lens; and a controller configured to output a heating voltage corresponding to the sensed temperature, wherein at least one of the first or second connection substrate includes a heater configured to generate heat in response to the heating voltage, and wherein the heater is disposed at a position corresponding to at least one of an upper surface or a lower surface of the liquid lens.

A method for controlling an induction heating apparatus of one embodiment comprises starting to heat a container, obtaining an inductance value of the container, calculating an overheating determination index based on the inductance value, comparing the overheating determination index with a predetermined first reference value, and determining whether to stop heating the container based on results of the comparison between the overheating determination index and the first reference value.

Disclosed is a method for controlling the temperature of a heater which has a single plate-shaped member formed of a semiconductor substrate, and three or more electrodes formed on a side surface of the single plate-shaped member while being spaced apart from each other in a circumference direction, the method comprising a step for heating the plate-shaped member by supplying a power between the electrodes and sequentially changing the pair of electrodes to which the power is supplied, wherein a period of time in which the power is supplied between the electrodes in the heating step is individually determined for each set of electrodes.

A cooking vessel according to one example embodiment includes a food receptacle for holding food during cooking. The cooking vessel includes an inner shell and an outer shell. An outside surface of the inner shell forms the food receptacle. A portion of an inside surface of the inner shell is spaced from a portion of an inside surface of the outer shell forming a sealed volume between the inner shell and the outer shell. A heat pipe is positioned within the sealed volume between the inner shell and the outer shell for distributing heat through the sealed volume between the inner shell and the outer shell. Embodiments include those wherein each of the inner shell and the outer shell includes a respective bottom wall and a respective side wall.

The invention relates to a method for boil detection at a heating zone of an induction hob (1), the method comprising the steps of: —disabling (S110) a power control mechanism of the induction hob by setting the frequency of the AC-current provided to an induction coil of the induction hob to a fixed value; —measuring (S120) values of an electrical parameter provided within the induction hob (1); —interpolating (S130) the measured electrical parameter values by gathering a plurality of values of the electrical parameter within a time window and calculating the average value of said gathered plurality of values thereby obtaining interpolated electrical parameter values. —calculating (S140) a gradient measure indicative for the differential change of the interpolated electrical parameter values over time; —determining (S150) the boil point based on the calculated gradient measure.

A cooking appliance includes a cooktop having at least one heating element for heating a cookware member on or to be placed on the cooktop, the at least one heating element being adjustable between a working-power level wherein the at least one heating element is energized to generate heat and a zero-power level wherein the at least one heating element is not energized. The cooking appliance further includes a temperature sensor configured to detect a temperature or rate of temperature change of a cooking element. The cooking appliance further includes a control device configured to adjust the at least one heating element from the working-power level to the zero-power level based on the temperature or rate of temperature change of the cooking element. The at least one heating element will remain at the zero-power level until a user intervenes to re-energize the at least one heating element.

An induction heating type cooktop includes an upper plate coupled to a top side of a case and configured to place an object to be heated on a top of the upper plate, a working coil disposed inside the case to heat the object, a thin film disposed on at least one of a top surface or a bottom surface of the upper plate, an insulator disposed between the bottom surface of the upper plate and the working coil, and a temperature sensor configured to measure a temperature of at least one of the thin film or the upper plate by a plurality of thermocouples.