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Microcrystal heating element and metal microcrystal heating element

A heating element and microcrystalline technology, applied in the direction of electric heating devices, ohmic resistance heating, heating element materials, etc., can solve the problems of poor thermal shock resistance, short life of heat concentration, easy scale formation, etc., and achieve improved corrosion resistance, resistance The effect of excellent corrosion performance and excellent corrosion resistance

Inactive Publication Date: 2014-04-16
张鸿鸣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing electric heat exchangers in the field of medium and low temperature electric heat exchangers have the following disadvantages. The heating area of ​​the electric heating tube type heat exchanger is small, the surface heating is uneven, and local overheating is easy. The thermal inertia is large, the reaction speed of the temperature sensing element is relatively slow, the efficiency is relatively low, and the life is short due to the excessive concentration of heat
[0004] Existing sheet electric heat exchangers have disadvantages such as poor thermal shock resistance, complex manufacturing process, and high cost

Method used

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  • Microcrystal heating element and metal microcrystal heating element
  • Microcrystal heating element and metal microcrystal heating element
  • Microcrystal heating element and metal microcrystal heating element

Examples

Experimental program
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Embodiment 1

[0061] Embodiment 1, with reference to attached figure 1 , figure 2 .

[0062] This embodiment provides a sheet-shaped microcrystalline heating element, which includes a base layer multi-phase composite ceramic 1 as an insulating and heat-conducting layer, an interface layer multi-phase composite ceramic 2, an electrothermal alloy foil 3 and a frame 4 as an electric heating element.

[0063] The simple production process is as follows: (reference figure 1 , figure 2 )

[0064]Coat the interface layer multiphase composite ceramic slurry 2 on the surface of the electrothermal alloy foil 3 as the electric heating element, and then coat the matrix layer multiphase composite ceramic slurry 1 as the insulating and heat conducting layer or put the matrix layer as the insulating and heat conducting layer The multi-phase composite ceramic green sheet 1, and then paste the multi-phase composite ceramic green sheet 4 as a frame on the outer edge of the stack, and after stacking tog...

Embodiment 2

[0071] Embodiment 2, with reference to attached image 3 .

[0072] What this embodiment provides is a disc-shaped metal microcrystalline heating element, which includes a metal shell 21, and sintered on the metal shell 21 are multi-phase composite ceramic insulating and heat-conducting layers 22-1, 22-2, 22-3, 22-4 and 4-layer interfacial layer multi-phase composite ceramic insulation heat conduction layer 24-1, 24-2, 24-3, 24-4 are composed of multi-phase composite ceramics, which are combined into axial layers, so The layered multiphase composite ceramics have frames 22-3-1 and 22-4-1, the frame 22-3-1 is located at the periphery of 22-3, and the frame 22-4-1 is located at the periphery of 22-4. The metal shell 21 has a flanging 21-1, and the flanging 21-1 constitutes the outermost frame, so that it is combined with the frame 22-3-1, 22-4-1 to form a radial direction of the multi-phase composite ceramic insulating and heat-conducting layer. Layered frames, the frames 22-3...

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Abstract

The invention provides a microcrystal heating element which comprises multi-phase composite ceramic and an electric heating component. The multi-phase composite ceramic comprises microcrystal glass and oxide ceramic and / or non-oxide ceramic, and the microcrystal glass and the oxide ceramic and / or the non-oxide ceramic are tightly combined through sintering in the environment of 900-1450 DEG C. The invention further provides a metal microcrystal heating element which comprises a metal shell, the multi-phase composite ceramic and the electric heating component, wherein the multi-phase composite ceramic comprises the microcrystal glass and the oxide ceramic and / or the non-oxide ceramic, and the oxide ceramic and / or the non-oxide ceramic, the electric heating component, basic glass particles of the microcrystal glass and the metal shell are tightly combined through sintering in the environment of 900-1450 DEG C to form a laminated structure. The combination strength between the metal shell serving as a cooling element and the multi-phase composite ceramic and the combination strength between the multi-phase composite ceramic and the electric heating component are high, heat shock resistance is high, safety is improved, the heating surface is uniform, thermal inertia is little, and thermal efficiency is high.

Description

technical field [0001] The invention relates to the field of electric heat exchangers. Background technique [0002] The existing electric heat exchangers mainly include tubular electric heat exchangers and sheet electric heat exchangers. Most of the heat exchange working surfaces are made of aluminum, aluminum alloy, copper, stainless steel and other metals, and some tubular electric heat exchangers are expanded by cast aluminum. Heat exchange area, and some electric heat exchangers use graphite with high thermal conductivity to expand the heat exchange area to achieve the purpose of increasing heat exchange efficiency. [0003] The existing electric heat exchangers in the field of medium and low temperature electric heat exchangers have the following disadvantages. The heating area of ​​the electric heating tube type heat exchanger is small, the surface heating is uneven, and local overheating is easy. The thermal inertia is large, the response speed of the temperature se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/10H05B3/28C04B35/00
Inventor 张鸿鸣沈稚鸣
Owner 张鸿鸣
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