Working medium filling system for independent parallel multichannel flat heat pipe, and filling method thereof

Abstract

The invention discloses a working medium filling system for an independent parallel multichannel flat heat pipe, and a filling method thereof. The filling system comprises a working medium tank, a quantitative system, a constant temperature common chamber, a flat heat pipe, a variable temperature system, a vacuum system and a sealing system; and control valves are arranged between the quantitativesystem and the constant temperature common chamber as well as between the constant temperature common chamber and the vacuum system. During filling, non-condensable gas in a pipeline system and the flat heat pipe is pumped out firstly, and then high temperature and high pressure working medium vapor is filled into the flat heat pipe through the quantitative system; when temperature and pressure vapor-liquid equilibrium is achieved, working media in the parallel multichannel flat heat pipe are in the vapor-liquid phase coexisting state; at the moment, one end of the parallel multichannel flatheat pipe is sealed through the sealing system, so that the independent parallel multichannel flat heat pipe is made. The working medium filling system has the advantages of stable overall performance, the high filling quality and automation degree, and the simple technology, and is suitable for mass production, and the mass consistency of the working media in each flat heat pipe channel can be controlled accurately.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an independent parallel multi-channel flat heat pipe working fluid filling system with high performance and stable quality and a filling method thereof. Background technique [0002] With the rapid development of science and technology such as electronics and electricity, and the improvement of living standards, consumers require electronic products to be shorter, smaller, lighter, thinner, multi-functional, and high-performance, which leads to the generation of electronic products during work. The heat is getting bigger and the power density is getting higher and higher. The traditional solid material heat dissipation technology is increasingly unable to meet the needs of technological development. Therefore, heat dissipation has become a bottleneck restricting the development of electronic products. [0003] A heat pipe is a high-performance heat transfer element that...

AI Technical Summary

Problems solved by technology

Since multiple independent channels are used to evacuate non-condensable gas at the same time, during the vacuum exhaust process, it is impossible to control and ensure that the remaining working mass in each channel after exhaust is the same, and the non-condensable gas in each channel cannot be guaranteed. can be completely discharged

In summary, resulting in its low performance and unstable quality defects, which restricts the large-scale production and application of multi-channel aluminum flat heat pipes

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