Heat pipe and preparation method thereof

A technology of junction heat pipes and heat pipes, applied in the field of junction heat pipes and their preparation, can solve the problems of reducing the service life of junction heat pipes, affecting the heat transfer performance of junction heat pipes, and prone to deformation, etc., achieving low production costs, improving anti-deformation functions, and improving The effect of stress resistance

Active Publication Date: 2017-09-01
ZUNYI ZHONGBO CEMENTED CARBIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper is the most common material in cables and electronic components, and its thermal conductivity is also high. However, due to the softness of copper, the hardness of the existing shell is low, and it is easy to deform. The deformation of the shell will not only affect the heat transfer of the junction tube. thermal performance, and will greatly reduce the service life of the junction heat pipe

Method used

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  • Heat pipe and preparation method thereof
  • Heat pipe and preparation method thereof

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Embodiment 1

[0024] The embodiment is basically as attached figure 1 Shown: provide a junction heat pipe, including a tube shell, a tube core close to the inner wall of the tube shell and a working liquid sealed in the tube shell, the tube shell includes a boron nitride section 1 and a white corundum section 2, wherein the boron nitride section 1 occupies 1 / 2 of the length of the shell, white corundum section 2 occupies 1 / 2 of the length of the shell, the outer diameter of the shell is 65mm, the inner diameter is 55mm, and the height is 125mm; and the free end of boron nitride section 1 is round shape, the free end of the white corundum segment 2 is a protrusion.

[0025] The preparation method of the heat junction tube in this embodiment includes the following steps:

[0026] A. Material preparation: heat white corundum to 2200°C to molten state by electric arc, and heat boron nitride to 2800°C to molten state by electric arc;

[0027] B. Injection molding: first inject molten white cor...

Embodiment 2

[0033] A junction heat pipe provided in this implementation includes a tube shell, a tube core close to the inner wall of the tube shell and a working liquid sealed in the tube shell. The tube shell includes a boron nitride section 1 and a white corundum section 2, wherein the boron nitride section 1 occupies 1 / 3 of the length of the shell, white corundum section 2 occupies 2 / 3 of the length of the shell, the outer diameter of the shell is 80mm, the inner diameter is 70mm, and the height is 140mm; and the free end of boron nitride section 1 is round shape, the free end of the white corundum segment 2 is a protrusion.

[0034] The preparation method of the heat junction tube in this embodiment includes the following steps:

[0035] A. Material preparation: heating white corundum to 2350°C to molten state by electric arc, and heating boron nitride to 2900°C to molten state by electric arc;

[0036] B. Injection molding: first inject molten white corundum into the stamping mold,...

Embodiment 3

[0042] A junction heat pipe provided in this implementation includes a tube shell, a tube core close to the inner wall of the tube shell and a working liquid sealed in the tube shell. The tube shell includes a boron nitride section 1 and a white corundum section 2, wherein the boron nitride section 1 occupies 1 / 6 of the length of the shell, white corundum section 2 occupies 5 / 6 of the length of the shell, the outer diameter of the shell is 100mm, the inner diameter is 90mm, and the height is 165mm; and the free end of boron nitride section 1 is round shape, the free end of the white corundum segment 2 is a protrusion.

[0043] The preparation method of the heat junction tube in this embodiment includes the following steps:

[0044] A. Material preparation: heat white corundum to 2500°C to molten state by electric arc, and heat boron nitride to 3200°C to molten state by electric arc;

[0045] B. Injection molding: first inject the white corundum in the molten state into the st...

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Abstract

The invention relates to the technical field of heat pipes, and provides a heat pipe. The heat pipe comprises a pipe shell, a pipe core and working liquid, wherein the pipe core is arranged on the inner wall of the pipe shell, the working liquid is sealed in the pipe shell, the pipe shell comprises a white corundum section and a boron nitride section which are integrally formed, the white corundum section is 1/2 to 5/6 of the length of the pipe shell, and the boron nitride section is 1/6 to 1/2 of the length of the pipe shell. The invention further provides a preparation method of the heat pipe. The heat pipe provided by the invention has the advantage of difficulty in deformation, the heat transfer performance of the heat pipe can be effectively improved, the service life of the heat pipe is prolonged, and additionally, the invention provides the preparation method of the heat pipe.

Description

technical field [0001] The invention relates to the technical field of heat pipes, in particular to a junction heat pipe and a preparation method thereof. Background technique [0002] Junction heat pipes are widely used in aerospace, military and other industries. It makes full use of the principle of heat conduction and the rapid heat transfer properties of phase change media, and quickly transfers the heat of the heating object to the heat source through the junction heat pipe; the heat conductivity of the junction heat pipe exceeds that of any known metal. The thermal conductivity is an artificial component with excellent heat transfer; the working principle of the junction heat pipe is: in the evaporation section of the junction heat pipe, the working fluid in the tube core is heated and evaporated, and the heat is taken away. Latent heat of evaporation, steam flows from the central channel to the condensation section of the heat junction tube, condenses into liquid, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/04F28F21/04
CPCF28D15/04F28F21/04
Inventor 稽建斌胡光政胡筱
Owner ZUNYI ZHONGBO CEMENTED CARBIDE
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