Double-rotor electromagnetic heating machine

Abstract

The invention belongs to the technical field of electromagnetic induction heating, and discloses a double-rotor electromagnetic heating machine. The heating machine totally converts input mechanical energy into thermal energy and transmits the thermal energy through a fluid heat-transfer medium. The heating machine adopts a double-rotor and double-air-gap structure, and a permanent magnetic rotor adopts a halbach magnetic structure to improve the utilization rate of a permanent magnet and reduce use quantity of iron cores of the rotor. When the rotor is driven by external mechanical power, a stator of the heating machine is located in an alternating magnetic field formed by a rotary permanent magnetic field. Heating is carried out through hysteresis, the eddy-current effect and the current thermal effect of a closed electric conductor in the stator. A baffling plate type heat exchanging channel is arranged in the stator so as to enlarge a heat exchanging area and improve heat exchange efficiency. The heating machine has the advantages of being simple in structure, easy to machine, high in utilization rate of the permanent magnet, high in heat exchange efficiency, capable of being used as small domestic heating equipment, and also capable of being used in fields such as mariculture, heating in work stations in alpine regions and warm water irrigation in high-latitude regions, and the like.

Description

technical field [0001] The invention relates to electromagnetic induction heating technology, in particular to a fluid heating technology based on rotating electromagnetic induction heating. Background technique [0002] The electromagnetic heat engine uses wind energy, water energy or other energy sources to drive the permanent magnet rotor to rotate, establish a rotating magnetic field, and use the hysteresis and eddy current effects generated in the magnetic and conductive materials to generate heat. The existing electromagnetic heat engine mainly has two structures: one is a simple single stator, single air gap structure, the material and space utilization rate of this structure is low; the other is a cup rotor with double stator, double air gap structure. The gap structure can use the thermal energy of the space occupied by the rotor core to increase the effective utilization of materials and space, and improve the heating efficiency, but its structure is complicated, i...

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Problems solved by technology

[0003] In order to solve the problems of low utilization rate of rotor permanent magnets in the existing electromagnetic heat engine, complex structure and difficult processing, and further improve the heat exchange efficiency and work efficiency of the electromagnetic heat engine, the invention provides a dual-rotor electromagnetic heat engine based on the halbach magnet structure

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