Heating device, preparation method of device and high-temperature heating equipment

Abstract

The invention provides a heating device which is ultrathin, good in high-temperature resistance, safe, reliable, high in heating efficiency, simple in structure and resistant to oxidation, a preparation method of the device and high-temperature heating equipment comprising the heating device. The heating device comprises an insulating substrate layer (1), wherein a titanium diboride semiconductorfilm layer (2) is sputtered on one surface of the insulating substrate layer, and an antioxidant and insulating protective film layer (3) is sputtered outside the titanium diboride semiconductor filmlayer. The preparation method comprises the following steps of a, preparing the insulating substrate layer, and preparing a titanium diboride target material; b, sputtering the titanium diboride target material on the surface of the insulating substrate layer and preparing an electrode; and c, sputtering the antioxidant and insulating protective film layer (3) on the surface of the formed titaniumdiboride semiconductor film layer. The high-temperature heating equipment comprises a main body (4), wherein a heating plate (5) is arranged on the surface of the main body, and the heating device isattached to the lower surface of the heating plate. The heating device, the preparation method of the device and the high-temperature heating equipment are applied to the field of high-temperature heating.

Description

technical field [0001] The invention relates to the field of high-temperature heating equipment, in particular to a heating device, a preparation method of the device and high-temperature heating equipment including the heating device. Background technique [0002] At present, the heating methods of the heating cooker in the prior art mainly include the following methods. [0003] One is conventional coal gas or natural gas burning heat. However, this method based on direct combustion of gas and natural gas will emit a large amount of carbon dioxide, and carbon dioxide permeates the living environment, causing environmental pollution and bringing unsafe factors. [0004] The second is that the electromagnetic field of the induction cooker converts heat. In this method, eddy currents occur on metal utensils. The eddy currents cause metal molecules to move at high speed and irregularly, and the molecules collide and rub against each other to generate heat energy. However, th...

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Problems solved by technology

In this method, eddy currents occur on metal utensils. The eddy currents cause metal molecules to move at high speed and irregularly, and the molecules collide and rub against each other to generate heat energy. However, the molecular collision and friction processes in this way will destroy the molecular structure of food, and cannot maintain the original taste and taste of food. It nourishes, and at work produces radiation of low-frequency electromagnetic waves

However, the electromagnetic field converts the heat into an intermittent heating method, the heating is not continuous enough, the controllability of the temperature is not strong, and it does not have some high-temperature stir-frying effects

And only metal utensils can be used, which brings serious pollution of heavy metals to food

[0005] The third type is nickel-chromium wire electric ceramic furnace. In this way, the nickel-chromium wire on the furnace plate is energized and heated to generate direct heat energy. However, because the nickel-chromium wire generally has a service life of 1-3 years at high temperature, the aging of the nickel-chromium wire The process is fast, and the furnace plate where the nickel-chromium wire is placed is in a long-term high-temperature state. After the dust on the furnace plate falls into the gap between the high-temperature heating wires, the open flame will instantly fuse the heating wires.

However, the hot pressing sintering of the existing technology has low production capacity and high cost, making it extremely difficult to achieve mass production

Moreover, the thermal expansion coefficients of tungsten wire and silicon nitride are quite different, and the components may burst when heating, and the reliability needs to be improved.

In addition, the heating wires or heating sheets used in the prior art generally have insufficient thermal efficiency, and the energy consumption is relatively serious, resulting in unnecessary waste of electric energy

[0007] There are many deficiencies in the heating methods used in the prior art. In addition, social development and life have put forward higher requirements for green electricity consumption environment and healthy energy-saving lifestyle. An unprecedented qualitative change is urgently needed

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