The present invention relates to a superconducting magnet apparatus using movable iron core and induction heating apparatus thereof. The superconducting magnet structure is composed by including a pair of superconducting magnets and a pair of movable iron cores which are symmetrically located with respect to the heating target product located between the superconducting magnets and a part of which move through the cutouts of the superconducting magnets. And the distance from the superconducting magnets is adjusted by moving the movable iron cores. Further, the present invention manufactures an induction heating apparatus by using the superconducting magnet structure.

An electromagnetic induction heating or cooling system including a housing having a fluid air inlet, a sleeve shaped support extending within the housing and including a plurality of spaced apart and radially extending magnetic or electromagnetic plates communicated with the inlet. An elongated conductive component is rotatably supported about the sleeve support and includes linearly spaced apart and radially projecting conductive plates which alternate with the spacing established by the magnetic or electromagnetic plates. A motor rotates the conductive component which, upon rotation of the conductive plates, generates magnetic fields to condition the fluid according to either of induction heating or cooling. The rotating plates of the conductive component are further individually configured so that they simultaneously redirect the conditioned fluid flow through a warm air outlet of the housing.

An inductive hardening system for hardening a component includes a holding unit for holding the component, an induction coil configured to induce an electrical current in the component to heat the component, and a control unit configured to control the induction coil to produce a first amount of heat per unit area in the component until a predetermined temperature is reached and/or a predetermined time is elapsed and after the predetermined temperature is reached and/or the predetermined time is elapsed, to control the induction coil to produce a second amount of heat per unit area in the component, the second amount of heat being from 3% to 80% of the first amount of heat.

A cooking appliance apparatus includes at least one fan unit having at least one fan wheel which is mounted for rotation about a rotation axis. A heating element is provided to heat the fan wheel in at least one operating state, with the heating element being configured as an induction heating element.

A laundry treatment apparatus is configured to directly heat a drum containing laundry therein. The laundry treatment apparatus includes: a tub; a drum configured to rotate within the tub and to contain laundry therein, the drum being formed of a metallic material; and an induction module provided at an outer surface of the tub and configured to heat a surface of the drum within the tub via induction, the induction module comprising: a coil that comprises a wire through which an electric current is configured to pass so as to generate a magnetic field; a base housing configured to accommodate the coil therein, the base housing being mounted on the outer surface of the tub; an at least one magnet configured to be arranged above the base housing in which the coil is accommodated, and arranged to be lengthwise perpendicular to a longitudinal direction of the wire of the coil.

An induction heating device having a control box, a magnetic core provided with at least one inductor fed with a current by a power electronics that is controlled by a control circuit, the power electronics and the control circuit being disposed in the control box, a removeable closing yoke for completing the magnetic circuit of the magnetic core, and a plurality of temperature sensors. A plurality of metal articles are simultaneously heated so as to each reach a target temperature and according to a heating cycle during which the temperatures sensors monitor the temperatures of the plurality of the metal articles so that each metal article is connected to a temperature sensor that is not connected to any other metal article.

A laundry treating apparatus includes a tub, a drum rotatably provided in the tub, an induction heater which is fixed to the tub, is spaced apart from the drum, and heats the drum, a first circuit including a first coil installed in the tub, a power supply unit which applies AC power to the first coil, and a second circuit installed in the drum and including a second coil disposed in a position overlapping with the first coil in a length direction of a rotational central shaft of the drum and a thermistor having a resistance that varies based on a temperature.

The invention relates to a method for the inductive surface layer hardening of a surface which runs around an annular component and has an initial zone, an end zone and two intermediate zones extending between the initial zone and the end zone. The initial zone is brought to hardening temperature by an inductor and quenched by a spray. Subsequently, an inductor arrangement is moved in each case along the intermediate zone to the end zone. Each inductor arrangement includes a leading inductor for preheating the region covered by it, a trailing inductor for finish-heating the preheated region and a spray for quenching the finish-heated region. After the inductor arrangements are located at a certain distance from the initial zone, the leading inductor of at least one of the inductor arrangements is moved in the direction of the end zone at an increased feed rate compared to the trailing inductor. The leading inductor thus reaches the end zone by a time interval earlier, whose duration is equal to the duration required by the trailing inductor to overcome the distance previously resulted between said trailing inductor and the leading inductor. In the meantime, the end zone is preheated by the leading inductor that reached it. When one of the trailing inductors of the inductor arrangements has arrived in the end zone, it heats the end zone to the finished hardening temperature.

A laundry treating apparatus includes a cabinet, a drum provided inside the cabinet and formed of a metal material, and an induction module configured to heat the drum, The induction module includes a base housing for accommodating a coil, and a cover housing forming a moving space of heat generated from the coil, jointed to an upper portion of the base housing, the cover housing includes a through portion for discharging the heat by passing through the cover housing up and down, and the cover housing forms a section upwardly inclined toward the through portion to move the heat generated from the coil along the inclined section and discharge the heat to the through portion. It is possible to prevent a temperature of the coil from being excessively increased, and enhance durability and efficiency of the induction module by active discharge of heat generated from the coil.

The invention relates to a method and a heating device (1c) for inductively heating a stator (2) or armature (3) of an electric machine, in particular before and during trickle impregnation thereof. In addition, the invention relates to an impregnating device (50) in which this heating device (1c) is integrated. According to the invention, it is provided that the heating takes place inductively by electromagnetic fields of different frequencies. For this purpose, it is provided in the case of the heating device (1c) that it has at least one electromagnetic inductor (18, 21, 24) which is disposed coaxially or axially parallel with respect to the longitudinal axis (7) of the stator (2) or armature (3) and which inductively heats said stator or armature, and that the at least one inductor (18, 21, 24) is designed to generate at least two electromagnetic fields of different frequencies.