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.

The present invention relates to a cooking appliance with at least one carrying plate (3) adapted to receive cookware placed thereon, in particular a cooking hob (1) with a top plate or with a system comprising a top plate and at least one pan support. At least one sensing means for the detection of vibration is comprised. The vibration is generated when food to be cooked and/or cooking adjuvant inside of the cookware is heated up. The food to be cooked and/or cooking adjuvant may be a cooking liquid. A vibration sensor is attached to the carrying plate (3) by way of fixation means which prevent relative movement between the vibration sensor and the carrying plate (3), in particular in the direction towards and/or away from each other. Further, a method for assembling a vibration sensor to a carrying plate (3) of a cooking appliance, particularly to a top plate of a cooking hob (1), is disclosed. The carrying plate (3) transmits vibration movements from a cookware to the vibration sensor. The assembly comprises the assembling steps: - a first rigid frame part (23) is rigidly connected to the carrying plate (3), preferably in a first assembling step; and - the vibration sensor is connected to the first rigid frame part (23) in a way that prevents relative movement between vibration sensor and carrying plate (3), in particular in the direction towards and/or away from each other, preferably in a second assembling step.

An inductive cooktop includes: at least one cooking zone; at least one heating coil associated with the cooking zone; and a cooktop controller for driving the at least one heating coil in an operating mode of the inductive cooktop to heat a cooktop utensil with a transmitter unit, which cooktop utensil is placed on the cooking zone. The inductive cooktop is operable in a standby mode in which driving of the at least one heating coil is disabled. The inductive cooktop is operable in a ready mode. The inductive cooktop is switchable from the standby mode to the ready mode by a wake-up signal received by a receiver unit of the cooktop controller. In the ready mode, the at least one heating coil is drivable by the cooktop controller such that, on one hand, the cooktop utensil is prevented from being effectively heated for a preparation operation.

A cooking apparatus may comprise: an alarm; a cooking plate including glass and a capacitance sensor panel; and a control unit which determines a reference position corresponding to the position of a cooking vessel on the basis of a capacitance change of the cooking plate, determines a plurality of regions on the cooking plate, to which different weights are provided depending on a distance from the reference position, and controls the alarm to output a warning message when a value of capacitance change of the cooking plate having the weights applied thereto exceeds a predetermined value.

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.

A cooking device that includes a controller configured to, after being activated, control an operation of the cooking device; a communication unit configured to, after being activated, transmit data to a wireless power transmission device; a pickup coil configured to wirelessly receive power from a transmitting coil of the wireless power transmission device; a rectification unit configured to rectify the an alternating current (AC) of the pickup coil corresponding to the power received by the pickup coil, to produce a direct current (DC); a first capacitor configured to be charged in accordance with the DC current produced by the rectification unit to activate the communication unit; and a second capacitor, having a capacitance greater than a capacitance of the first capacitor, configured to be charged in accordance with the DC current produced by the rectification unit to activate the controller, so that the communication unit is activated before the controller.

A cooking apparatus is disclosed, which comprises a first housing provided with an inverter for induction heating; and a second housing including a working coil to which a current supplied from the inverter is transferred, heated as a container for receiving cooking food is arranged thereon, wherein the first housing and the second housing constitute spaces detached from each other.

Disclosed are a split-type cooking appliance and a control method therefor. The control method includes acquiring state information of an identification device after a base is powered on; if the state information is a first state, forbidding the base from operating in an induction cooker operation mode and allowing the base to operate in an electric cooker operation mode; if the state information of the identification device is a second state, determining whether a wireless transmission coil circuit detects a feedback signal; if so, forbidding the base from operating in the induction cooker operation mode and allowing the base to operate in the electric cooker operation mode; and if not, allowing the base to operate in the induction cooker operation mode, and forbidding the base from operating in the electric cooker operation mode.

An induction heating device includes a working coil and a resonance capacitor, an inverter that performs a switching operation to supply a resonance current to the working coil, a plurality of snubber capacitors electrically connected to the inverter, a direct current (DC) link capacitor electrically connected to the inverter, and a relay configured to electrically connect one of the plurality of snubber capacitors to the DC link capacitor or the resonance capacitor.

An induction heating device includes: a working coil, an inverter, a current transformer, a current detecting circuit, a voltage detecting circuit, an AND circuit, and a controller. The induction heating device may detect presence or absence of an object and a material of the object based on a magnitude of resonance current applied to the working coil and a phase difference between the resonance current and a voltage applied to a switching element of the inverter.