Planar super-conduction heat pipe and preparation method thereof

Abstract

The invention provides a planar super-conduction heat pipe. The planar super-conduction heat pipe comprises a closed shell, liquid absorption cores formed in the shell, and multiple steam passageways formed in the liquid absorption cores. The planar super-conduction heat pipe is characterized in that each steam passageway is composed of two symmetric arch-bridge-shaped pore ducts. A preparation method specifically includes the steps that 1, brass powder is ultrasonically cleaned at least three times with distilled water or high-purity water, each process is conducted for at least 20 min, chloride ions and sulfate radicals in the brass powder are removed, and the purity of the brass powder is more than 99.9%; 2, the completely-cleaned brass powder is injected into a planar super-conduction heat pipe with a core rod fixed, and even vibration is carried out; 3, the planar super-conduction heat pipe filled with the powder is fixed to a support and placed in a hollow protective sintering furnace to be sintered, and the planar super-conduction heat pipe is sintered for at least 3 hours at the constant temperature of 950 DEG C. Compared with the prior art, the heat conduction capacity is excellent, the super-conduction capacity of the planar super-conduction heat pipe is 5-10 times and even more that of market products, and great market prospects are achieved.

Description

technical field [0001] The invention relates to a heat pipe for heat transfer, in particular to a planar superconducting heat pipe and a preparation method thereof. Background technique [0002] The heat pipe has become an ideal component for heat dissipation of the current high heat flux chip, and it is generally composed of a tube shell and a liquid-absorbing core. The working principle is: the inside of the heat pipe is pumped into a negative pressure state, filled with an appropriate liquid medium, and the liquid-absorbing core is attached to the pipe wall and is composed of capillary porous materials. One end of the heat pipe is the evaporation end, and the other end is the condensation end. When one end of the heat pipe is heated, the liquid in the capillary evaporates rapidly, and the steam flows to the other end through the steam chamber in the middle under the pressure difference. After being cooled, it condenses into a liquid and releases a phase change. The laten...

AI Technical Summary

Problems solved by technology

Since the support structure and the porous capillary structure are not integrally formed, it is easy to disturb the steam flow and restrict the heat dissipation performance of the heat pipe

In addition, the steam channels of the existing liquid-absorbing cores are mostly circular, which has the problems of insufficient capillary force and large backflow resistance.

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