Electromagnetic heating structure

Abstract

The invention provides an electromagnetic heating structure, which is easy to install, can form a closed magnetic field with the object to be heated to improve the heating effect, has a wide application range, high thermal efficiency, low energy consumption, and long service life; it includes a shell, an electromagnetic induction coil , the housing is composed of two L-shaped heating bodies, the electromagnetic induction coil is arranged in the heating body, and the two heating bodies form a Hafur-style rectangular structure and form a through-hole cavity, and the heated object The heating body is wrapped in the through-hole cavity.

Description

technical field [0001] The invention relates to the technical field of electric heating equipment, in particular to an electromagnetic heating structure. Background technique [0002] In the heating field of injection molding machines, extruders and blow molding machines in the plastic industry, heaters are commonly used heating devices. For plastic machines, cast copper heaters, infrared heaters, and electromagnetic heaters are more commonly used. Among them, The cast copper heater is an electric heating tube cast in the heating body of the metal material, which is heated by conduction, but the thermal efficiency is low, the energy consumption is high, and the service life is short; the infrared heater itself has a high temperature, but it is easy to cause Open flames have potential safety hazards; electromagnetic heaters are heated by induction, do not generate heat themselves, have high efficiency, and low energy consumption. Therefore, electromagnetic heaters are often u...

AI Technical Summary

Problems solved by technology

[0002] In the heating field of injection molding machines, extruders and blow molding machines in the plastic industry, heaters are commonly used heating devices. For plastic machines, cast copper heaters, infrared heaters, and electromagnetic heaters are more commonly used. Among them, The cast copper heater is an electric heating tube cast in the heating body of the metal material, which is heated by conduction, but the thermal efficiency is low, the energy consumption is high, and the service life is short; the infrared heater itself has a high temperature, but it is easy to cause Open flames have potential safety hazards; electromagnetic heaters are heated by induction, do not generate heat themselves, have high efficiency, and low energy consumption. Therefore, electromagnetic heaters are often used as heating methods, but the structure of existing electromagnetic heaters is that the coil as a whole However, in the flat twin-screw plastic mechanical heating, since the water pipe is arranged above the heated material pipe, the overall cross-section is square, if the existing cylindrical electromagnetic heating structure is still used, not only The coil arrangement and installation are inconvenient, and the whole cannot form a closed magnetic field, which affects the heating effect, low thermal efficiency, high energy consumption, and short life

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