Pulsating heat pipe with roughening structure

Abstract

The invention discloses a pulsating heat pipe with a roughening structure. Acetone is injected into the pulsating heat pipe to serve as a work medium. The pulsating heat pipe comprises an evaporation section, a heat insulation section, a condensation section and a work medium injected section, wherein the heat insulation section and the condensation section are integrated through a capillary tube, the evaporation section is welded to the heat insulation section, two connecting ports of the work medium injected section are communicated with a three-way pipe, and the surface of the inner wall of the evaporation section is of a particle structure. As the surface of the inner wall of the evaporation section is of the particle structure, the lowest temperature needed by starting of the pulsating heat pipe is lowered, the pulsating heat pipe can still smoothly start and operate even under a low heat flux density condition, the starting time can be effectively shortened, and the pulsating heat pipe with the roughening structure has broad application prospects in the field of heat dissipation of electronic elements.

Description

technical field [0001] The invention relates to a cooling and heat dissipation device for electronic components, in particular to a pulsating heat pipe with a roughened structure. Background technique [0002] With the continuous improvement of the integration of electronic components, the volume of electronic equipment is getting smaller and smaller, and the functions and complexity of electronic equipment are increasing. The heat dissipation problem of the high heat flux density of the heating chip has become one of the biggest bottlenecks in the development of the microelectronics industry. The pulsating heat pipe has a good development prospect in the efficient cooling of electronic devices due to its simple and changeable structure, strong adaptability, no need for capillary core, simple manufacture, and good heat transfer performance. The pulsating heat pipe is a closed capillary circuit with serpentine bend and vacuum. After filling part of the working fluid, under t...

AI Technical Summary

Problems solved by technology

The traditional pulsating heat pipe is made of capillary bends, the wall surface is relatively smooth, and the heat flux needs to reach a certain level before it can be started, resulting in a too high start-up temperature rise beyond the allowable temperature range of the equipment, thereby affecting the performance of the equipment, and at the same time, it takes a long time start-up time, which limits the practical application of pulsating heat pipes

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