A heating device and/or method to heat a slab, and in particular its edges, by electromagnetic induction, including an electric coil and a magnetic concentrator associated with the electric coil.

Disclosed herein is an induction heating device that provides improved user experience and user interface, the induction heating device including a case, a plurality of working coils provided in the case, a cover plate which is coupled to an upper end of the case and where an object subject to heating heated by at least one of the plurality of working coils is placed on an upper surface thereof, an input interface flatly buried into the upper surface of the cover plate, configured to receive a touch input from a user, and configured to display a specific image, a first control module configured to sense which one of the plurality of working coils has the object subject to heating at an upper side thereof, and a second control module configured to receive information on a position of the sensed object subject to heating from the first control module, and to control the specific image displayed on the input interface on the basis of the received information on the position of the object subject to heating, wherein, in case the object subject to heating includes first and second objects subject to heating placed close to each other, the second control module controls the input interface such that an image for guiding an optimal heating position of any one object subject to heating of the first and second objects subject to heating is displayed on the input interface.

Disclosed herein is an induction heating device that provides improved user experience and user interface, the induction heating device including a case, a plurality of working coils provided in the case, a cover plate which is coupled to an upper end of the case and where an object subject to heating heated by at least one of the plurality of working coils is placed on an upper surface thereof, an input interface flatly buried into the upper surface of the cover plate, configured to receive a touch input from a user, and configured to display a specific image, a first control module configured to sense which one of the plurality of working coils has the object subject to heating at an upper side thereof, and a second control module configured to receive information on a position of the sensed object subject to heating from the first control module, and to control the specific image displayed on the input interface on the basis of the received information on the position of the object subject to heating, wherein, in case the object subject to heating includes first and second objects subject to heating placed close to each other, the second control module controls the input interface such that an image for guiding an optimal heating position of any one object subject to heating of the first and second objects subject to heating is displayed on the input interface.

The invention relates to a method for the induction hardening of a workpiece, in particular a toothed and/or corrugated and/or ribbed workpiece such as a gear or saw blade, wherein a matchingly shaped induction loop is guided or set over the workpiece surface to be hardened, the induction loop being formed layer-by-layer by the additive application of material, and the induction loop being shaped to match the surface to be hardened.

The invention relates to a method for the induction hardening of a workpiece, in particular a toothed and/or corrugated and/or ribbed workpiece such as a gear or saw blade, wherein a matchingly shaped induction loop is guided or set over the workpiece surface to be hardened, the induction loop being formed layer-by-layer by the additive application of material, and the induction loop being shaped to match the surface to be hardened.

This high-frequency hardening apparatus is provided with: an induction heating coil which has a U-shaped part that sandwiches a turbine blade, a pair of linear parts, and a connection part connecting the U-shaped part and the linear parts; a temperature detection unit which detects, in a non-contact manner, temperature around the induction heating coil; a moving mechanism which relatively moves the turbine blade and the induction heating coil in the direction of blade height; an electrical current supply unit which supplies a high-frequency electrical current to the induction heating coil; and a control device which has an electrical current control unit that, on the basis of a detection value provided by the temperature detection unit, controls the magnitude of the high-frequency electrical current supplied from the electrical current supply unit such that the detection value will not exceed a predetermined temperature.

A clothing processing device disclosed in the present specification includes: a cabinet; a drum provided inside the cabinet, made of a metal material, and provided to receive a laundry therein; and an induction module which is spaced apart from the circumferential surface of the drum and heats the circumferential surface of the drum through a magnetic field generated when a current is applied to a coil having a wound wire, wherein: the induction module includes a base housing for receiving the coil; the coil includes a first region which is a portion located adjacent to the front of the drum, a third region which is a portion located adjacent to the rear of the drum, and a second region which is a portion positioned between the first region and the third region; and a shortest width of the first region or the third region is formed to be greater than a shortest width of the second region so that the coil having the wire wound on the base housing has different widths.

A clothing processing device disclosed in the present specification includes: a cabinet; a drum provided inside the cabinet, made of a metal material, and provided to receive a laundry therein; and an induction module which is spaced apart from the circumferential surface of the drum and heats the circumferential surface of the drum through a magnetic field generated when a current is applied to a coil having a wound wire, wherein: the induction module includes a base housing for receiving the coil; the coil includes a first region which is a portion located adjacent to the front of the drum, a third region which is a portion located adjacent to the rear of the drum, and a second region which is a portion positioned between the first region and the third region; and a shortest width of the first region or the third region is formed to be greater than a shortest width of the second region so that the coil having the wire wound on the base housing has different widths.

An induction heating device is provided. The induction heating device comprises a plurality of induction heating devices disposed at intervals along the circumference of a ring-shaped workpiece, a setting unit for setting induction heating conditions, and a switching control unit. Each of the plurality of induction heating devices comprises heating coils disposed facing areas to be heated of the workpiece, a plurality of transformers connected to the heating coils in parallel, a plurality of matching units connected to any one of the plurality of transformers, an inverter unit having a rectifier unit and an inverter unit, an inverter control unit having a rectification control unit, and a group of switches.

An induction heating device is provided. The induction heating device comprises a plurality of induction heating devices disposed at intervals along the circumference of a ring-shaped workpiece, a setting unit for setting induction heating conditions, and a switching control unit. Each of the plurality of induction heating devices comprises heating coils disposed facing areas to be heated of the workpiece, a plurality of transformers connected to the heating coils in parallel, a plurality of matching units connected to any one of the plurality of transformers, an inverter unit having a rectifier unit and an inverter unit, an inverter control unit having a rectification control unit, and a group of switches.