Self-cleaning heat pipe with super-hydrophilic liquid absorption core

Abstract

The invention discloses a self-cleaning heat pipe with a super-hydrophilic liquid absorption core. The self-cleaning heat pipe comprises a pipe shell, the super-hydrophilic liquid absorption core and a super-hydrophobic film. The pipe shell is provided with a closed cavity, the super-hydrophilic liquid absorption core and a heat-transfer medium are arranged in the closed cavity, the super-hydrophilic liquid absorption core comprises a liquid absorption core and a super-hydrophilic film, the liquid absorption core is a silk screen liquid absorption core, the super-hydrophilic film is arranged on the surface of the silk screen liquid absorption core, the thickness of a surface rough structure of the super-hydrophilic film ranges from 50 nanometers to 500 nanometers, the top diameter of the surface rough structure of the super-hydrophilic film ranges from 1 nanometer to 200 nanometers, and the top distance of the surface rough structure of the super-hydrophilic film ranges from 10 nanometers to 100 nanometers. The super-hydrophobic film covers the outer surface of the pipe shell, and the thickness of the super-hydrophobic film ranges from 50 nanometers to 500 nanometers. By nano-scale rough structure construction, the heat transfer performance of the heat pipe can be improved, the super-hydrophobic film has adhesion resistance, the problem of ash deposition of the outer surface of the heat pipe can be solved, and self-cleaning is realized. Self-cleaning and heat transfer performances of the heat pipe are effectively improved.

Description

technical field [0001] The invention relates to a self-cleaning heat pipe with a superhydrophilic liquid-absorbing core, belonging to the technical field of heat exchange. Background technique [0002] A heat pipe is a component that relies on the phase change of its internal working liquid to achieve heat transfer. It uses the evaporation and condensation of the liquid to transfer heat quickly. At the same time, it can transport heat over a long distance through a small cross-sectional area without external power. It is precisely because of the excellent heat transfer performance of heat pipes that heat pipes are widely used in solar heating, electronic equipment cooling, chemical engineering, aerospace and other fields. [0003] The heat pipe mainly relies on the capillary force obtained by the liquid-absorbing core in the pipe to realize heat transfer. The backflow of the heat transfer medium driven by the liquid-absorbing core directly affects the heat transfer efficien...

AI Technical Summary

Problems solved by technology

[0004] For heat pipes exposed to the air for a long time, the outer surface is easy to absorb dust, which increases the thermal resistance of the heating surface of the heat pipe and reduces the heat transfer performance

At the same time, it takes a lot of manpower and material resources to clean the surface impurities

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