A cooktop accessory device includes a detection coil configured to detect an inductive signal of an induction heating unit, and a signal analysis unit configured to determine a parameter of the inductive signal.

A cooktop appliance includes a cooking surface including a plurality of burners; a control panel operably coupled to the cooking surface, the control panel including a plurality of controls for operating the plurality of burners; and a controller operably coupled to the cooking surface and the control panel. The controller is configured for determining that a cookware item has been activated; receiving a remote signal from the activated cookware item; determining a recommended burner of the plurality of burners in response to receiving the remote signal from the activated cookware item; and implementing a responsive action in response to determining the recommended burner of the plurality of burners.

Food stuffs are cooked at precise temperatures, which are optionally below 100° C., in a vessel that is evacuated to exclude air, in which low pressure steam replaces the air. When a sufficient quantity of air is excluded and replaced with water vapor, the temperature of vapor is accurately measured inside the vessel below the lid to control the temperatures within about 1° C. Air is preferably excluded via a controlled heated process for a relatively short period of time at high temperature to generate steam, the temperature is lowered to condense water vapor upon which the lid will sealingly engage the rim of the vessel, forming a partial vacuum in the cooking vessel.

A method for operating a cooking system, the cooking system including a hob, cookware, and a mobile device, includes: transmitting a process instruction from the mobile device to the hob; receiving the process instruction from the mobile device by the hob; transmitting a confirmation request from the hob to the cookware; in response to a confirmation by a user on the cookware, transmitting a confirmation message from the cookware to the hob; and in response to the hob receiving the confirmation message from the cookware, executing the process instruction of the mobile device by the hob.

A wireless power transmission apparatus for determining empty heating is provided. The wireless power transmission apparatus includes at least one processor configured to control a communication interface configured to communicate with a cooking appliance, wherein the communication interface is further configured to receive, from the cooking appliance, a temperature of a bottom surface of the cooking appliance and an internal temperature of the cooking appliance for a first time period during which a heating operation is performed and for a second time period following the first time period, during which the heating operation is stopped, and the at least one processor is further configured to stop the heating operation for the second time period, and determine whether the cooking appliance undergoes empty heating based on a relationship between the temperature of the bottom surface and the internal temperature for the second time period.

A kitchen appliance is disclosed includes a first electrical component, a second electrical component, and a wireless power receiver system. The wireless power receiver system includes a first receiver antenna configured to couple with a first transmission antenna and receive virtual AC power signals from the first transmission antenna. A second receiver antenna is configured to couple with a second transmission antenna and receive virtual DC power signals from the second transmitter antenna. A first receiver power conditioning system is configured to receive the virtual AC power signals, convert the virtual AC power signals to AC received power signals, and provide the AC received power signals to power the first electrical component. The second receiver power conditioning system configured to receive the virtual DC power signals, convert the virtual DC power signals to DC received power signals, and provide the DC received power signals to power the second electrical component.

A kitchen appliance is disclosed includes a first electrical component, a second electrical component, and a wireless power receiver system. The wireless power receiver system includes a first receiver antenna configured to couple with a first transmission antenna and receive virtual AC power signals from the first transmission antenna. A second receiver antenna is configured to couple with a second transmission antenna and receive virtual DC power signals from the second transmitter antenna. A first receiver power conditioning system is configured to receive the virtual AC power signals, convert the virtual AC power signals to AC received power signals, and provide the AC received power signals to power the first electrical component. The second receiver power conditioning system configured to receive the virtual DC power signals, convert the virtual DC power signals to DC received power signals, and provide the DC received power signals to power the second electrical component.

A wireless induction heating cooker is configured to be operated on an induction heating apparatus. The wireless induction heating cooker includes a main body, a lid that is configured to be coupled to an upper surface of the main body and that includes an output module, an internal pot configured to be disposed within the main body, a plurality of temperature sensors that are disposed at an outer surface of the internal pot and that are arranged along a circumferential direction of the internal pot, and a control module. The control module is configured to determine an alignment state of the main body relative to the induction heating apparatus based on measured values of the plurality of temperature sensors, and control the output module to output a guide signal corresponding to the alignment state.

A heating cooker system according to the present invention includes: an induction cooker including a first coil configured to produce a first high-frequency magnetic field for induction heating, a first inverter circuit configured to supply a first high-frequency current to the first coil, a second coil configured to produce a second high-frequency magnetic field, and a second inverter circuit provided independently of the first inverter circuit and configured to supply a second high-frequency current to the second coil; and a cooking device including a power receiving coil configured to wirelessly receive supply of electric power from the second high-frequency magnetic field when the power receiving coil is positioned in the second high-frequency magnetic field, and a cooking unit configured to be driven by the electric power received by the power receiving coil.

A home appliance includes a case having a first seating portion and a second seating portion, a first coil arranged in the first seating portion and configured to generate induced current to the first seating portion, a second coil arranged in the second seating portion and configured to generate induced current to the second seating portion and having a height lower than a height of the first seating portion, a first inverter arranged in the first seating portion and to supply driving current to the first coil to cause the first coil to generate the induced current, and a second inverter arranged in the first seating portion and to supply driving current to the second coil to cause the second coil to generate the induced current.