A novel shielded electromagnetic heating device and heating method

Abstract

The invention relates to a novel shielding type electromagnetic heating apparatus and heating method, used for heating a working medium in an inner conduit. The apparatus comprises an inner single-winding coil layer and an outer dual-winding coil layer, wherein the inner single-winding coil layer comprises single-winding coils; the single-winding coils are wound around the outer surface of the inner conduit; the outer dual-winding coil layer comprises dual-winding coils; the dual-winding coils are wound around the outer surface of the inner single-winding coil layer and cover the single-winding coils in the inner single-winding coil layer; magnetic lines of force of the dual-winding coils subjected to winding are opposite in direction; the single-winding coils are connected with a high-frequency alternating current to heat the working medium in the inner conduit based on an electromagnetic heating principle; and the dual-winding coils eliminate electromagnetic radiation based on an electromagnetic counteracting principle to realize electromagnetic shielding and isolation. The novel shielding type electromagnetic heating apparatus provided by the invention is simple in structure, high in heating efficiency, energy-saving, environmentally-friendly and relatively high in safety and reliability.

Description

technical field [0001] The invention relates to the technical field of heating and heat exchange, in particular to a novel shielded electromagnetic heating device and a heating method. Background technique [0002] The two most widely used heating methods are resistance heating and electromagnetic heating. The resistance heating method refers to the method of directly heating the material to be heated or indirectly heating the material to be heated by using the Joule effect after the resistance conductor is connected to the current. The resistance heating method uses heat such as resistance wire to heat the material to be heated, and the general heat loss is large, and a large amount of The lost heat energy is dissipated to the surroundings, causing the temperature of the surrounding environment to rise, increasing the possibility of further greenhouse effect, and increasing the possibility of requiring additional facilities to cool down the heated surrounding environment, r...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems of complex structure, high potential safety hazard and high cost budget existing in the existing electromagnetic heating device, and provides a novel shielded electromagnetic heating device, which adopts a single-winding coil to realize electromagnetic heating and uses a double-winding coil to eliminate electromagnetic radiation, and at the same time realizes Electromagnetic shielding and isolation, the electromagnetic heating device has a simple structure and reduces the cost budget, realizes the high-efficiency and energy-saving electromagnetic heating function, and improves safety and reliability at the same time

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