Provided is an evaporation apparatus configured to form an organic layer made from organic material on a substrate, the apparatus including: a container configured to contain the organic material, at least a portion of which is composed of conductor; a heating coil disposed around the container; a DC power supply; an inverter connected to the DC power supply; a primary coil connected to the inverter; and a secondary coil connected to the heating coil, wherein the primary coil and the secondary coil form a matching transformer.

A heating apparatus for heating a cavity inside a chamber. The apparatus may include a first heater at the bottom of the chamber, a second heater at the top of the chamber, at least one air inlet connected to the chamber; and at least one air outlet connected to the chamber.

A heating apparatus for heating a cavity inside a chamber. The apparatus may include a first heater at the bottom of the chamber, a second heater at the top of the chamber, at least one air inlet connected to the chamber; and at least one air outlet connected to the chamber.

Method for operating a kitchen appliance (100), the kitchen appliance (100) having: a rectifier (1) for producing a DC voltage (UG) from a grid voltage (UN), a first inverter (2) which is powered by the DC voltage (UG) and which is designed to generate a first control signal (AS1) having a first frequency (f1), a first coil (3) which is controlled by means of the first control signal (AS1) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (4) and/or for transferring energy in the direction of an electrical load (5) by means of inductive coupling, a second inverter (6) which is powered by the DC voltage (UG) and which is designed to generate a second control signal (AS2) having a second frequency (f2), and a second coil (7) which is controlled by means of the second control signal (AS2) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (8) and/or for transferring energy in the direction of an electrical load (9) by means of inductive coupling, the method having the step of: controlling the first inverter (2) and the second inverter (6) in such a way that the first frequency (f1) and the second frequency (f2) are dependent on each other.

Method for operating a kitchen appliance (100), the kitchen appliance (100) having: a rectifier (1) for producing a DC voltage (UG) from a grid voltage (UN), a first inverter (2) which is powered by the DC voltage (UG) and which is designed to generate a first control signal (AS1) having a first frequency (f1), a first coil (3) which is controlled by means of the first control signal (AS1) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (4) and/or for transferring energy in the direction of an electrical load (5) by means of inductive coupling, a second inverter (6) which is powered by the DC voltage (UG) and which is designed to generate a second control signal (AS2) having a second frequency (f2), and a second coil (7) which is controlled by means of the second control signal (AS2) and by means of which an alternating magnetic field is able to be generated for heating a cooking vessel (8) and/or for transferring energy in the direction of an electrical load (9) by means of inductive coupling, the method having the step of: controlling the first inverter (2) and the second inverter (6) in such a way that the first frequency (f1) and the second frequency (f2) are dependent on each other.

A household appliance device includes a control unit which is designed to control an induction target repetitively with a switching frequency and to supply the induction target with energy. The control unit is designed to modulate in an operating state through frequency modulation the switching frequency within a modulation period which corresponds to an integer multiple of a half period of a mains AC voltage.

An aerosol generating device for generating aerosol from an aerosol generating material is disclosed. The aerosol generating device includes a first heating unit and a second heating unit both arranged to heat, but not burn, an aerosol generating material in use. A controller is arranged to control the first and second heating units wherein during the course of a session the controller is arranged to set the first heating unit: (i) a target operating temperature T1 during a time period t1-t2; (ii) a target operating temperature T2 during a time period t2-t3; (iii) a target operating temperature T3 during a time period t3-t6; and (iv) a target operating temperature T4 during a time period t6-t7; wherein temperature T1>T2>T3>T4 and time t0<t1<t2<t3<t4<t5<t6<t7.

A heating device and an operating method of the heating device. The heating device includes: a communication interface configured to obtain identification information of a cooking device located on a top plate; a wireless power transmitter including a working coil arranged to form a magnetic field; and at least one processor, wherein the at least one processor is configured to identify a temperature control mode of the cooking device corresponding to the identification information of the cooking device, when a rotation input of rotating the cooking device is detected, obtain a target heating temperature corresponding to the cooking device based on a rotation displacement according to the rotation input and the temperature control mode of the cooking device, and control power transmission by the wireless power transmitter such that a temperature of a content of the cooking device reaches the target heating temperature.

The present invention relates to a method for controlling a cooking process by using a liquid in a cooking vessel, for example a cooking pot, upon a cooking hob (20). The method comprises a step of determining a cooking parameter of the liquid in the cooking vessel at a predetermined time (tB, tBP), a step of adjusting a heating power density (P) of a cooking zone of the cooking hob (20) for transferring a heating power (P) to the cooking vessel placed on the cooking zone; and a step of reducing the heating power density (P) transferred to the cooking vessel from an initial power (iP) to a simmering power (PS). Further, the present invention relates to a cooking vessel for the cooking hob (20). Moreover, the present invention relates to a cooking appliance for performing the cooking process.

An induction heater for a device for heating tobacco or aromatic herbs, in particular of the heat-not-burn type. The induction heater includes at least one inductor having at least one electrically insulating layer and at least one electrically conductive track fixed to the at least one electrically insulating layer. The at least one inductor is adapted to be arranged about a metal tube in which part of a cigarette can be inserted, and the metal tube is adapted to be heated by induction by the at least one inductor.