複合式微結構對均熱板特性影響之研究

Study on the Performance of Vapor Chamber in the Complex Wicks

張仁林(Jen-Lin Chang)

指導教授 ： 蘇程裕

國立臺北科技大學/機電學院/製造科技研究所/碩士(2007年)

摘要

本研究利用燒結式銅粉作為均熱板蒸發區之微結構，搭配銅網製成複合式均熱板，探討不同粒徑(270~400mesh)及結構型態(球形及樹枝狀)粉末經燒結之後對複合式均熱板性能(熱傳量及熱阻)之影響。
研究結果顯示，當球形粉末粒徑由270mesh減小至400mesh時，由於燒結後的微結構孔隙率及滲透度較小，以致於毛細壓力相對會較大，因此用於複合式均熱板所得到的熱阻也較小；相對地，在270mesh的球形粉末粒徑中，由於滲透度較大，因此用於複合式均熱板可呈現出較佳的均溫性。此外，在樹枝狀結構粉末中，因為微結構內部流道綿密而複雜，導致工作流體流動不易，導致在滲透率上不佳，所以用於複合式均熱板的熱阻會較大。

關鍵字

銅粉 ； 毛細結構 ； 均熱板 ； 熱阻

並列摘要

The purpose of the study is to investigate the performance of the complex vapor chambers composed of various particle diameters (270~400mesh) and structures (particle or tree-like shapes). In this study, the wickers consisted of sintered copper powders and meshes were used to form the complex vapor chambers in the evaporation area.
The results show that the thermal resistances of the complex vapor chambers are
decreasing with the particle distribution from 270 mesh to 400 mesh. Because of lower porosity and permeability, the capillary pressure is enhanced. Relatively, the complex vapor chambers composed of 270 mesh powders have better isothermal. In addition, the thermal resistances of the complex vapor chambers are enhanced due to the complex internal channels contributed to tree-like powders.

並列關鍵字

Copper powders ； Wick ； Vapor chamber ； Thermal resistances

參考文獻

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