An inductive heating device (1) comprises a device housing (10) a DC power source (11), a power supply electronics (13) comprising a DC/AC inverter (132) including a Class-E power amplifier with a transistor switch (1320), a transistor switch driver circuit (1322), and an LC load network (1323) configured to operate at low ohmic load (1324), the LC load network (1323) comprising a shunt capacitor (C1) and a series connection of a capacitor (C2) and an inductor (L2), and a cavity (14) arranged in the device housing (10), the cavity (14) having an internal surface shaped to accommodate at least a portion of the aerosol-forming substrate (20), wherein the cavity (14) is arranged such that the inductor (L2) is inductively coupled to the susceptor (21) of the aerosol-forming substrate (20) during operation.

A method of curing a part in a mold using induction heated tooling is provided. In preferred embodiments, the method comprises placing a material that may be cured with pressure and heat in tooling made from a non-metallic material wherein the tooling includes a mold cavity that forms the part. Creating an electro-magnetic field across the tooling using induction coils. Applying pressure to the tooling and heating a metallic material contained in channels formed in the tooling around the mold cavity of the part.

A heating system is provided. The heating system comprises an induction heating assembly configured to generate a varying magnetic field and a heating target assembly comprising one or more heating targets, wherein the one or more heating targets are moveable relative to the induction heating assembly, the one or more heating targets being heatable by penetration with the varying magnetic field.

An induction heating device for a shrink-clamping and/or unshrink-unclamping of tools into and/or from tool holders, in particular an induction heating unit of a shrink-clamping and/or unshrink-unclamping station for tools, comprises an induction heating unit comprising at least one induction coil which is configured to expand, by heating, at least a portion of the tool holder during a shrink-clamping and/or unshrink-unclamping process, and includes at least one shielding unit which is at least configured for a shielding of an induction magnetic field generated by the induction heating unit at least substantially at least in an axial direction of the induction coil, wherein the induction heating unit and the shielding unit form structural units which can be operatively decoupled from each other and can thus be moved relative to each other at least in the axial direction.

Aspects of the present invention relate to an induction heating system for heating a component. The induction heating system includes a power module for outputting an alternating current, the power module being operable to output the alternating current at a variable supply frequency. A controller is provided to identify at least one resonant frequency of the alternating current supplied to the at least one induction element. The controller is configured to determine an operating temperature of the component in dependence on the at least one identified resonant frequency. Aspects of the present also relate to an induction heating controller; a component having an induction heating element; and to a method of heating a component by inductive heating.

The induction heating-type cooktop according to an embodiment of the present disclosure comprises: a top plate part on which an object to be heated is placed; a working coil which generates a magnetic field for heating the object to be heated; and an inverter part which performs actuation to have an electric current supplied to the working coil, wherein the top plate part may be made of a metallic material that can be heated by the magnetic field.

An induction heating-type cooktop according to an embodiment of the present disclosure comprises: a upper plate part on which an item to be heated is placed; a working coil for generating magnetic field for heating the item to be heated or an intermediate heating body; and an inverter unit that operates so as to provide the working coil with current, wherein the inverter unit can adjust the operating frequency in accordance with the constituent material of the item to be heated.

A cooktop using an induction heating method according to an embodiment of the present disclosure includes a plate on which an object to be heated is placed, a working coil generating a magnetic field for heating the object to be heated, and an inverter configured to control current flowing through the working coil. The plate may include a supporter made of a non-metallic material, an intermediate heating body forming at least a part of an upper surface of a top plate, and an insulating material that is arranged to be in contact with at least one surface of the intermediate heating body.

An induction heating cooktop according to an embodiment of the present disclosure may include a top plate on which a cooking vessel is placed; a working coil configured to generate a magnetic field passing through the cooking vessel; an inverter configured to supply current to the working coil; a sensor configured to detect the temperature of the top plate; and a controller configured to identify a material of the cooking vessel using at least one of a change in a load impedance and a change in temperature, and determine whether the cooking vessel is in a preheated state based on at least one reference value that compares the change in the load impedance and the change in temperature, which are set differently for each material of the cooking vessel.

A method for controlling an induction heating apparatus comprises receiving a power level for a heating region, supplying a switching signal to an inverter circuit based on a predetermined reference frequency, measuring an output current value of the inverter circuit, measuring a DC link voltage value, calculating an output power value of the working coil based on the output current value of the inverter circuit and the DC link voltage value, determining a heating frequency of the inverter circuit based the result of comparison by comparing the output power value of the working coil with a required power value, and supplying a switching signal to the inverter circuit based on the heating frequency.