Line heat source

Abstract

The invention relates to a line heat source, which comprises a linear support structure, a heating element arranged on the surface of the linear support structure and at least two electrodes arranged at intervals, the at least two electrodes are electrically connected with the heating element, wherein the heating element comprises at least one carbon nanotube film, and carbon nanotubes in the same carbon nanotube film are arranged by preferred orientation along the same direction.

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. The wire heat source is one of the commonly used heat sources, and is widely used in electric heaters, infrared therapeutic devices, electric heaters and other fields. [0003] See figure 1 , the prior art provides a wire heat source 10, which includes a hollow cylindrical bracket 102; a heating element 104 is arranged on the surface of the bracket 102, and an insulating protective layer 106 is arranged on the surface of the heating element 104; two electrodes 110 are respectively arranged It is located at both ends of the bracket 102 and is electrically connected to the heating element 104 ; two clamping parts 108 fasten the two electrodes 110 and the heating element 104 to the two ends of the bracket 102 respectively. Where...

AI Technical Summary

Problems solved by technology

[0004] However, the use of carbon fiber paper as a heating element has the following disadvantages: First, the thickness of carbon fiber paper is relatively large, generally tens of microns, which makes it difficult for the linear heat source to be made into a microstructure, and cannot be applied to the heating of micro devices

Second, because the carbon fiber paper contains the paper substrate, the carbon fiber paper has a higher density and a higher weight, which makes it inconvenient to use the linear heat source using the carbon fiber paper

Third, due to the random distribution of pitch-based carbon fibers in the carbon fiber paper, the carbon fiber paper has low strength, poor flexibility, and is easy to break, which limits its scope.

Fourth, the electrothermal conversion efficiency of carbon fiber paper is low, which is not conducive to energy saving and environmental protection

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