Metal composite electric heating device and heating furnace applying same

Abstract

The invention relates to a metal composite electric heating device and a heating furnace applying the same. The metal composite electric heating device comprises an electric heating layer, metal base layers, a first insulating layer and a second insulating layer, and the electric heating layer is connected with a first wring terminal and a second wiring terminal and is used for converting the electric energy into the heat energy; the metal base layers are arranged on the first surface of the electric heating layer at intervals and are used for reducing the heat loss of the electric heating layer; the first insulating layer is arranged between the electric heating layer and the metal base layers and is used for isolating the electric heating layer from the metal base layers; and the second insulating layer is arranged on the second surface of the electric heating layer and is used for isolating the second surface of the electric heating layer from the outside. The metal composite electric heating device is simple and reasonable in overall structure, the electric heating conversion efficiency of the electric heating layer is high, heat diffusion can be well prevented, the heat transfer efficiency and the heat utilization rate can be improved, and the cost and the influence on the environment are reduced; and the power consumption of the metal composite electric heating device is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of heating devices, in particular to a metal composite electric heating device and a heating furnace using the electric heating device. Background technique [0002] At present, industrial electric heating devices are mainly composed of electric heating wires. Electric heating wires are generally infrared type, quartz tube type, ceramic brick type, etc. This type of technology is mainly to cover the heating wire with materials as a protective layer, such as ceramics, Quartz, glass, etc. Its mechanism of action is to convert electrical energy into light energy, and then from light energy to heat energy. This electric heating device has the following deficiencies: [0003] (1) The electrothermal conversion efficiency is low, generally lower than 90%; [0004] (2) The heating wire or heating body emits heat to the surroundings, which causes a large part of the heat to be consumed in places that do not need h...

AI Technical Summary

Problems solved by technology

[0003] (1) The electrothermal conversion efficiency is low, generally lower than 90%;

[0004] (2) The heating wire or heating body emits heat to the surroundings, which causes a large part of the heat to be consumed in places that do not need heating, resulting in heat loss, resulting in low effective utilization of heat;

[0005] (3) In order to increase the heating temperature, some products unilaterally adopt the scheme of increasing power, which leads to aggravated energy waste, which not only pollutes the environment, but also shortens the life of the heating device, resulting in high energy consumption and high pollution (referring to the surrounding environment) Environmental heat dissipation, increase the temperature of the surrounding environment), high-cost vicious cycle problems

[0006] At present, electrical appliances such as heating furnaces using the above-mentioned electric heating device composed of electric heating wires on the market are difficult to meet the needs of consumers due to reasons such as high power and low electrothermal conversion efficiency.

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