Line heat source

A linear heat source and linear technology, applied in the direction of electric heating devices, heating element materials, heating element shapes, etc., can solve the problems of easy damage, large heating wire quality, unfavorable micro heat sources, etc., and achieve non-destructive, mechanical strength and toughness big effect

Active Publication Date: 2010-10-20
TSINGHUA UNIV +1
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Problems solved by technology

[0004] However, the heating wire made of metal, alloy or carbon fiber has the following disadvantages: first, the heat generated by the heating wire radiates outwards at ordinary wavelengths, and its electrothermal conversion efficiency is not high, which is not conducive to saving energy. Cotton thread coated with far-infrared paint to improve electrothermal conversion efficiency
Second, the size of carbon fiber is not small enough, which is not conducive to the application of micro heat sources. When the diameter of the metal wire is small, the strength i

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preparation example Construction

[0069] see Figure 16 , the first embodiment of the present invention further provides a method for preparing a linear heat source 20, which specifically includes the following steps:

[0070] Step S101, providing a carbon nanotube structure.

[0071] According to different carbon nanotube structures, the preparation method of the carbon nanotube structure includes: direct film drawing method, rolling method, flocculation method and the like. The preparation methods of the above-mentioned several carbon nanotube structures will be described separately below.

[0072] (1) When the carbon nanotube structure includes at least one carbon nanotube drawn film, the preparation method of the carbon nanotube structure comprises the following steps:

[0073] Firstly, a carbon nanotube array formed on a growth substrate is provided, and the array is preferably a super-aligned carbon nanotube array.

[0074] The preparation method of the carbon nanotube array adopts a chemical vapor de...

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Abstract

The invention relates to a line heat source comprising a line-shaped supporting structure, a heating element arranged at the surface of the line-shaped supporting structure and two electrodes, wherein the two electrodes are arranged at intervals and are electrically connected with the heating element, the heating element comprises at least one carbon nano pipe composite structure, and the carbon nano pipe composite structure comprises a basal body and a carbon nano pipe structure compounded in the basal body. The line heat source can be used for manufacturing heating clothes, heating gloves or heating shoes with spontaneous heating, an electric heater, an infrared therapeutic apparatus, an electric room heater and the like and has extensive application range.

Description

technical field [0001] The invention relates to a line heat source, in particular to a line heat source based on carbon nanotubes. Background technique [0002] Heat sources play an important role in people's production, life and scientific research. Wire heat source is a kind of heat source, which has a wide range of applications in industrial fields, scientific research fields, or life fields, such as electric heating tubes, electric blankets, infrared therapeutic instruments, and electric heaters. [0003] The existing linear heat source usually includes a linear heating element (such as a resistance wire, etc.) and two electrodes, the two electrodes are arranged at intervals and electrically connected to both ends of the linear heating element. When a voltage or current is applied to the linear heating element through the two electrodes, the linear heating element generates Joule heat, and the heat is radiated outward at a common wavelength. Usually, the linear heating...

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Application Information

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IPC IPC(8): H05B3/40H05B3/14B82B1/00
CPCH05B2214/04
Inventor 冯辰刘锴王佳平姜开利刘长洪范守善
Owner TSINGHUA UNIV
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