Line heat source

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, the carbon nanopipe composite structure comprises a basal body and a carbon nano pipe membrane structure compounded in the basal body, and the carbon nano pipe membrane structure comprises a plurality of carbon nano pipes which are mutually wound. 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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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 is very low and easy to break, which is not conducive to the application of micro heat sources.

Third, the mass of the heating wire is relatively large, which is not conducive to the lightening of the heat source

However, the carbon nanotube filaments in this patent document are used for luminescence. Since the mechanical strength and toughness of the directly obtained pure carbon nanotube filaments are not good enough, they are easily destroyed during use, thus limiting the use of carbon nanotube filaments. Use range, can not be used directly for heat source

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