A liquid metal heat pipe and heat dissipation device used in space microgravity environment

By designing a liquid metal heat pipe composed of a multi-layer liquid absorbent core and a thermal conduction layer in a space microgravity environment, the problem of insufficient anti-gravity heat transfer performance in this environment is solved, and efficient heat dissipation and temperature stability are achieved.

CN119756039AActive Publication Date: 2025-04-04BEIJING GUODIAN GAOKE TECH CO LTD
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Patent Information

Application Number
CN202411654176.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2025-04-04
Estimated Expiration
2044-11-19

AI Technical Summary

Technical Problem

Existing heat pipes are difficult to ensure anti-gravity heat transfer performance in space microgravity environments, resulting in poor heat dissipation effect and affecting the temperature stability of satellite equipment.

Method used

A liquid metal heat pipe is designed, and a liquid absorbing core composed of a first sintered liquid absorbing core, a micro-groove liquid absorbing core and a second sintered liquid absorbing core is used to combine a sintered nanoporous copper powder layer and a metal copper mesh prepared by irregular copper powder to achieve efficient evaporation and condensation process.

Benefits of technology

This design effectively balances high capillary capacity and high permeability in the space microgravity environment, ensures the anti-gravity heat transfer performance of liquid metal heat pipes, and improves the heat dissipation efficiency and reliability of satellite equipment.

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Abstract

The present invention relates to the field of heat dissipation technology, and provides a liquid metal heat pipe and heat dissipation device applied to a space microgravity environment. The above-mentioned liquid metal heat pipe comprises: a tube shell, a liquid wick and liquid metal; the liquid wick and the liquid metal are arranged in the tube shell, and a steam flow channel penetrating along the axial direction of the tube shell is formed in the liquid wick; the liquid wick comprises a first sintered liquid wick, a micro-groove liquid wick and a second sintered liquid wick connected in sequence along the axial direction of the tube shell; the first sintered liquid wick and the second sintered liquid wick both comprise a plurality of metal copper meshes sequentially sleeved from the inside to the outside; the micro-groove liquid wick comprises a plurality of liquid wicking channels extending along the axial direction of the tube shell, and the inner wall of the liquid wicking channel is provided with a groove structure extending along the axial direction of the tube shell. The liquid metal heat pipe of the present invention can perform heat dissipation work normally in a space microgravity environment, and has good anti-gravity heat transfer performance, which helps to improve the heat dissipation efficiency of satellite equipment and enhance its reliability and stability in space environment.
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