An electromagnetic induction system for providing either heating or cooling. A sleeve shaped component extends within the housing and supports a plurality of spaced apart and radially extending electro-magnetic plates. An elongated conductive component is rotatably supported about the sleeve support and incorporates a plurality of linearly spaced apart and radially projecting conductive plates which alternate with the electro-magnetic plates. A motor rotates the conductive component such that rotation of the conductive plates results in the creation of an oscillating magnetic field for conditioning of the fluid by either heating or cooling of the fluid. A controller adjusts an intensity of the magnetic fields to adjust a level of conditioning of the fluid flow which is communicated via the conductive component through an outlet of the housing.

A heat-treatment device 10 includes a table 11 on which a ring-shaped workpiece W can be placed, and a pair of heat processing units 20 for heat-processing the peripheral surface of the workpiece W. The heat-treatment device 10 is used for obtaining the workpiece W having desired properties by the heat-processing the workpiece W while the pair of heat processing units 20 move in opposite directions along the peripheral surface of the workpiece W. The heat-treatment device 10 is configured in such a way that a pair of revolving arms 30 movable relative to the table 11 oscillate the pair of heat processing units 20 relative to the workpiece W, thereby heat-processing the peripheral surface of the workpiece W. By adopting such a configuration, it is possible to obtain a heat-treatment device heat-processing the entire circumference of a ring-shaped workpiece.

A heat generator comprises a fluid input and fluid output, an electrically conducting disc mounted on a shaft, a plurality of magnets with their N-S axis aligned parallel to the plane of the first disc are mounted either side of the disc, a plurality of runner vanes upstanding from the disc and forming a plurality of widening fluid paths towards the magnets and allow fluid to flow over a vane free portion of the disc to exit the heat generator though the output. Drive systems are described in which high pressure fluid from a hydraulic motor connected to a turbine or Archimedean screw is used to drive the disc.

Disclosed herein is a heat generation apparatus using permanent magnets. The heat generation apparatus using permanent magnets includes: a plurality of rotors fixedly mounted on a rotating shaft, and configured such that they are rotatable along with the rotating shaft with permanent magnets disposed thereon at predetermined intervals; a heat generation part configured such that the rotors are contained therein to thus form a predetermined gap between the heat generation part and the rotors, and adapted to generate heat while the permanent magnets are being rotated; a motor configured to serve as a source for the rotation of the rotating shaft; and a power transmission means configured to transfer the rotation force of the motor to the rotating shaft.

The induction heating device that heats a heating medium includes a rotor having a rotation shaft, a heating part disposed to be opposed to the rotor at a distance, a magnetic flux generating part provided at the rotor to generate magnetic flux for the heating part, and a flow passage provided along the heating part to allow the heating medium to circulate. The flow passage has an inlet to supply the heating medium on one side in a direction along the heating part and an outlet to discharge the heating medium on the other side. The distance between the magnetic flux generating part and the heating part is larger on the outlet side than on the inlet side of the flow passage.

A heat generator having first and second members disposed around a shaft. One of the members has an electrically conducting portion and the other of said members has magnets mounted thereon opposite the said electrically conducting portion. A passage for fluid to be heated between the magnets and the electrically conducting portions is thus formed. The magnets are arranged so that their magnetic fields intersect the electrically conducting portions. Means are provided to rotate one member with respect to the other including an integral impeller and using liquid to be heated as the high pressure drive of a hydraulic motor.

Described herein are methods and system that use electromagnetic heating to heat wellbores and the fluids therein. The heating is achieved by placing one or more permanent magnets in the wellbore and moving a metallic component and/or the one or more permanent magnets relative to each other. This generates eddy currents in the metallic component, which heat the metallic component. This heat is transferred to the fluids in the wellbore from the metallic component by convection.

An induction heating device includes: a rotor having a rotation shaft; a heating part disposed to be opposed to the rotor at a distance; a magnetic flux generating part provided at the rotor to generate magnetic flux for the heating part; a magnetic flux guide part provided on an opposed surface side of the heating part that is opposed to the magnetic flux generating part to guide the magnetic flux from the magnetic flux generating part to the heating part; and a flow passage provided in the heating part to allow a heating medium to circulate. The magnetic flux guide part includes magnetic substance parts. The magnetic flux guide part has a structure in which the magnetic substance parts and the insulator parts extend along a direction from the magnetic flux generating part to the heating part and are alternately layered along a circumferential direction of the heating part.

Apparatus for heating fluids through rotary magnetic induction, which has at least one rotating central disc of magnets and at least one bilateral heat exchanger, wherein the magnet disc comprises at least one pair of magnets disposed in such disc and whose configuration exposes the magnets to both sides of the disc with alternating polarity on each side to generate on both sides an agitated magnetic field, and wherein at least one heat exchanger, comprising at least one low resistivity metal surface, is disposed adjacent to each side or face of the magnet disc in order to expose its metal surface to the agitated magnetic field, getting heated and transmitting such heat to a fluid circulating within at least one configured conduit located inside the heat exchanger.

A rotating magnet heater for metal products, such as aluminum strip, can include permanent magnet rotors arranged above and below a moving metal strip to induce moving or time varying magnetic fields through the metal strip. The changing magnetic fields can create currents (e.g., eddy currents) within the metal strip, thus heating the metal strip. A magnetic rotor set can include a pair of matched magnetic rotors on opposite sides of a metal strip that rotate at the same speed. Each magnetic rotor of a set can be positioned equidistance from the metal strip to avoid pulling the metal strip away from the passline. A downstream magnetic rotor set can be used in close proximity to an upstream magnetic rotor set to offset tension induced by the upstream magnetic rotor set.