Flexible heat-transfer device based on low-melting metal joints

Abstract

A flexible heat-transfer device based on low-melting metal joints consists of N flexible pipeline type liquid metal joints and N+1 heat pipes; N is a positive integral between 1 and 9; the heat pipes are communicated with both ends of the flexible pipeline type liquid metal joints; low-melting metal which has high heat conductivity and is liquid at room temperature is stored in the flexible pipeline type liquid metal joints; in the running process, heat passes through the heat pipes and the flexible pipeline type liquid metal joints arranged at intervals in sequence so as to realize the heat transfer. The low-melting metal has high heat conductivity so that the device can realize high-efficient heat transfer property; simultaneously, the connection by the flexible liquid metal can guarantee the flexible bending of the whole heat-transfer device; and the flexible heat-transfer device has the advantages of simple structure, excellent heat-conducting property and high bending flexibility, and can be applied to the fields of aerospace heat management and IT (Information Technology) such as notebook computer, mobile phone and server.

Description

technical field [0001] The invention relates to a heat conduction device, in particular to a flexible heat conduction device based on low melting point metal joints. Background technique [0002] Flexible heat conduction devices are generally used in occasions where there is relative movement at both ends of the heat transfer. For example, when a space satellite is in operation, there is mechanical vibration or movement between some heating elements and the radiation plate, so a flexible heat pipe is required to realize heat conduction (CN 200610063418.2). A flexible heat pipe generally consists of a flexible pipe connecting two rigid pipes. In order to ensure the free return of condensed liquid, the capillary structure and support structure must be arranged in the flexible pipe. However, the capillary structure greatly limits the bending flexibility of the pipe, and when the bending degree is greater than 90 degrees, it is easy to cause difficulty in liquid reflux and eve...

AI Technical Summary

Problems solved by technology

However, the heat conduction through the hinge is solid-solid heat conduction, the contact thermal resistance is large, and the heat transfer efficiency is low

Moreover, the hinge can only achieve one degree of freedom of rotation along the center line, and the flexibility is relatively poor

[0004] Generally speaking, the above-mentioned flexible heat conduction device has the following disadvantages: (1) The flexible pipe part of the flexible heat pipe must be arranged with a capillary structure, which limits the bending flexibility of the flexible pipe section, and the heat pipe is prone to failure when the bending degree is greater than 90 degrees; ( 2) The metal mechanical hinge mechanism can only realize the solid-solid heat conduction between the two heat pipes, the contact thermal resistance is large, and the heat transfer efficiency is low

At the same time, the hinge can only realize one degree of freedom of rotation, and the flexibility is low

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