• CN:11-2187/TH
  • ISSN:0577-6686

›› 2007, Vol. 43 ›› Issue (12): 166-170.

• 论文 • 上一篇    下一篇

微小型毛细泵环热控制系统及其制造技术

池勇;汤勇;陈锦昌;邓学雄;刘林;刘小康;万珍平   

  1. 华南理工大学机械工程学院
  • 发布日期:2007-12-15

MINIATURIZED CAPILLARY PUMPED LOOP HEAT CONTROLLING SYSTEM AND ITS MANUFACTURING TECHNIQUE

CHI Yong;TANG Yong;CHEN Jinchang;DENG Xuexiong;LIU Lin;LIU Xiaokang;WAN Zhenping   

  1. College of Mechanical Engineering, South China University of Technology
  • Published:2007-12-15

摘要: 针对当前微电子芯片高热流密度问题,设计一种微小型毛细泵吸环路(Capillary pumped loops,CPL)热控制系统。介绍制造该微小型CPL的方法:采用犁切—挤压成形微沟槽翅结构和刨削成形整体式翅片散热片,毛细吸液芯则采用商用多孔泡沫金属或丝网材料。该微小型CPL系统由蒸发器、冷凝器、蒸汽联管、液体联管以及液体工质组成。蒸发器中含有多尺度多维交错互通微沟槽翅强化沸腾结构,冷凝器为微沟槽翅结构与翅片散热片组成的复合结构,可有效提高系统蒸发冷凝效率。整个系统利用工质蒸发冷凝相变传热,通过毛细泵吸作用和蒸发气体压力保证循环,依靠饱和毛细芯对气体的阻碍作用保证工质的单向流动,无需机械泵和阀控制。

关键词: 犁切—挤压, 刨削, 微沟槽翅结构, 微小型毛细泵环, 整体式翅片散热片

Abstract: In order to dissipate the high heat flux of micro electronic chips, a miniaturized capillary pumped loop (Miniaturized CPL) heat controlling system was developed and the techniques to manufacture this miniaturized CPL were introduced. A kind of finned micro-groove structure was manufactured by ploughing-extrusion and an integrated fin heat sink was manufactured by skiving. The capillary structure can be with the porous formed metal or the wire-mesh screen industrialized. The miniaturized CPL was composed of an evaporator, a condensator, a vapor line, a liquid line and working liquid. To increase its evaporation-condensation efficiency, a boiling enhancement structure of dimensional cross-connected micro-grooves with fins was implanted in the evaporator, and the condensator was composed of finned micro-groove structure and integrated fin heat sink. Using the phase-change heat transfer, the miniaturized CPL can be ensured under the capillary pumping function and the press of evaporating gas. Due to the resistance from capillary structure, the working liquid can run strictly along the single direction without extra mechanical pump or valve.

Key words: Finned micro-groove structure, Integrated fin heat sink, Miniaturized capillary pumped loop, Ploughing-extrusion, Skiving

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