Low temp high radiation carbon fiber electrothermal radiation tube

An electrothermal radiation and carbon fiber technology, applied in the field of electrothermal radiant tubes, can solve the problems of high surface temperature, low thermal efficiency, and short life of resistance wires, and achieve high electrothermal conversion efficiency, strong thermal radiation ability, and long service life.

Inactive Publication Date: 2005-01-12
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the low temperature state, the electric resistance wire is usually used for electric heating, because the surface temperature of the resistance wire is high, the blackness is small, and it emits visible light when heated, the thermal efficiency is low, the surface load rate of the electric heating element is high, and the service life is short, especially the joint part is easy to oxidize and break off
[0003] At present, the heating element of low-temperature radiant tube mainly adopts resistance wire, and the outside is equipped with a heat-resistant steel protective sheath to protect the resistance wire. However, due to the limitation of the characteristics of the resistance wire itself, the thermal efficiency conversion is low.

Method used

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  • Low temp high radiation carbon fiber electrothermal radiation tube

Examples

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Effect test

Embodiment 1

[0015] Example 1: Winding a bundle of 12K carbon fibers on Al with helical grooves 2 o 3 On the insulator frame, the two ends of the insulator frame are inlaid with threaded heat-resistant steel joints, and the two ends of the carbon fiber wound on the insulating frame are wound and fixed on the threaded heat-resistant steel joints, and the outer side is covered with conductive powder and heated and cured to form an electric heating The main body of the element is to coat the surface of the quartz tube with infrared radiation paint, put the prepared carbon fiber electric heating element body into it, fill it with high-purity inert gas helium, and seal the end with a high-temperature adhesive, that is, the low-temperature heating element of the present invention is obtained. High radiation carbon fiber electric heating radiant tube.

Embodiment 2

[0016] Example 2: A bunch of 12K and 6K carbon fibers are mixed and wound on Al with spiral grooves 2 o 3 On the insulator frame, the two ends of the insulator frame are inlaid with threaded heat-resistant steel joints, and the two ends of the carbon fiber wound on the insulating frame are wound and fixed on the threaded heat-resistant steel joints, and the outer side is covered with conductive powder and heated and cured to form an electric heating The main body of the element, the surface of the quartz tube is coated with infrared radiation paint, the main body of the carbon fiber electric heating element is put into it, the end is sealed with a high-temperature adhesive, the inside of the quartz tube is evacuated and then the gas outlet is closed, and the product is obtained. Invented low-temperature high-radiation carbon fiber electric heating radiant tube.

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Abstract

The method is: its heating component is carbon fiber that is spiral wrap on the insulation framework, the joint is heat resisting steel joint having enclosed end; the heating component is blocked in the quartz capsule coated with infra red radiation paint, the quartz capsule is filled with high purity inert gases or is vacuum. The invention is specially applied in low temp baking and heating equipment.

Description

(1) Technical field [0001] The invention belongs to the field of heating elements of electric heating equipment, in particular to an electric heating radiation tube of low-temperature baking heating equipment. (2) Background technology [0002] Electric heating is the most widely used heating form, and electric heating elements are key components of heating equipment. At present, the most widely used heating element is heating by electric resistance wire. Due to different heating temperatures, the heating element is divided into three types: high temperature, medium temperature and low temperature. In the low temperature state, resistance wire is often used for electric heating. Because the surface temperature of resistance wire is high, the blackness is small, and it emits visible light when heated, the thermal efficiency is low, the surface load rate of the electric heating element is high, and the service life is short, especially the joints are easy to oxidize and break ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/40H05B3/68
Inventor 朱波王成国蔡华甦王延相
Owner SHANDONG UNIV
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