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Electric heating element of rare earth thick film circuit based on IR-LED (Infrared Light Emitting Diode) ceramic substrate and preparation method thereof

A rare earth thick film, ceramic substrate technology, applied in the direction of heating element materials, etc., can solve the problems of uneven temperature field, high heat source temperature, inconsistent thermal conductivity and thermal expansion coefficient, etc.

Inactive Publication Date: 2012-02-01
佛山市海辰科技有限公司
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Problems solved by technology

The electric furnace (resistance wire) is used to radiate and heat the far-infrared coating on the TDP board, which has low energy utilization rate, low thermal efficiency, and backward heating method.
Chinese patent 201020055361.3 uses a ceramic heater (casting the resistance wire in the ceramic body) to replace the electric furnace to heat the TDP board. Although the service life is improved, there is a leakage current problem, and the thermal conductivity and thermal expansion coefficient are inconsistent. The structure leads to uneven temperature field and radiation. Unstable efficiency, TDP board coating is easy to fall off and other defects
There are disadvantages such as complex molding process, high heat source temperature, low thermal efficiency, and difficult adjustment of infrared wavelength

Method used

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  • Electric heating element of rare earth thick film circuit based on IR-LED (Infrared Light Emitting Diode) ceramic substrate and preparation method thereof

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preparation example Construction

[0040] 1. Preparation of quartz ceramic substrate

[0041] The composition of the quartz ceramic substrate material is: high-purity quartz (SiO 2 -Al 2 o 3 -B 2 o 3 -Mg 2 0 3 -ZrO 2 ) ceramics and rare earth oxides, the ratio of each oxide powder of quartz ceramics is: SiO 2 93.5%~96.8%:Al 2 o 3 3~1.5%:B 2 o 3 1~0.5%:Mg 2 0 3 0.5~0.25%: ZrO 2 2~1%: Particle size≤3ηm. It is solidified and prepared by injection molding method, dried and sintered. The rare earth oxide is one or more of lanthanum, cerium, neodymium, promethium, gadolinium, erbium, scandium, yttrium and terbium oxide. Rare earth oxides can be added with different types and proportions of rare earth oxides according to the experimental mathematical model according to the requirements of quartz ceramic substrates with different specifications, different temperatures, and different uses for electrical properties, thermal properties, chemical properties, mechanical properties, and far-infrared functio...

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Abstract

The invention discloses an electric heating element of a rare earth thick film circuit based on an IR-LED (Infrared Light Emitting Diode) ceramic substrate and a preparation method thereof. The electric heating element is characterized by comprising a quartz ceramic substrate and serial rare earth electronic slurry. The serial rare earth electronic slurry is prepared on the quartz ceramic substrate in a form of a thick film circuit; and the thick film circuit is provided with an electrode connecting end for externally connecting with a power source. The invention has the advantages that the directly-heating type functional ceramic substrate is high in far infrared radiation efficiency, adjustable in wavelength range, uniform in temperature field, strong in thermal shock resistance, environment-friendly, efficient and energy-saving, safe and reliable as well as wide in application range.

Description

technical field [0001] The invention relates to the technical field of electric heating elements, in particular to a rare earth thick film circuit electric heating element and a preparation method thereof. Background technique [0002] High-efficiency infrared radiation ceramics refer to ceramic materials and products with higher emissivity at corresponding operating temperatures and wider wavelength bands. Thermal radiation, also known as infrared radiation, is an important way for objects to transfer heat. It is the most effective way of heating and dissipating heat under conditions of limited convection and heat conduction. Therefore, increasing the emissivity coefficient of the radiator surface is beneficial to the enhancement of radiation heat transfer. In other words, under the same high temperature condition, the heating element will emit more heat, and the temperature of the heated object will be higher. Different far-infrared ceramic products have different infra...

Claims

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Application Information

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IPC IPC(8): H05B3/10H05B3/12C04B35/14C04B41/88
Inventor 王克政王晨
Owner 佛山市海辰科技有限公司
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