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研究生：	洪孟漢 Hung, Meng-Han
論文名稱：	開迴路無閥幫浦系統之實驗研究 Experimental Study of an Open-Loop Valveless Pumping System
指導教授：	楊天祥 Yang, Tian-Shiang
學位類別：	碩士 Master
系所名稱：	工學院 - 機械工程學系 Department of Mechanical Engineering
論文出版年：	2011
畢業學年度：	99
語文別：	中文
論文頁數：	75
中文關鍵詞：	開迴路無閥幫浦系統、無閥流體驅動系統、Liebau效應、擠壓致動器衝擊效應
外文關鍵詞：	valveless pumping, open-loop system, Liebau effect, actuator impact effect
相關次數：	點閱：125 下載：2
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無閥幫浦近年來被廣泛應用於微系統與生醫系統上，其主要原因是無閥幫浦內部沒有閥門動件，如此一來可以減少零件損壞時造成之維修困難，同時也可以避免破壞系統內部流體成分。從歷史文獻來看，無閥幫浦系統在擠壓過程中，擠壓致動器與受壓容器之間的交互作用對於系統輸送流體效率的影響是鮮少被拿出來討論的，因此在本文中我們將釐清此現象對無閥幫浦帶來的影響。
本研究我們利用兩條長度不同的硬管，分別從擠壓幫浦兩側連接至兩個開放式壓克力水槽，以構成-開迴路的無閥幫浦系統。在本文中我們討論到門檻頻率(亦即公稱工作週期在預壓系統中，可使系統與擠壓致動器分離之最低擠壓頻率)對於開迴路無閥幫浦性能的影響，並藉此引導出擠壓致動器的衝擊效應在擠壓過程中扮演的重要角色。實驗過程中我們也記錄了擠壓致動器與受壓容器的位移變化，並歸納與分析兩者之間的交互作用對於無閥幫浦系統在流體輸送效率上面有何關聯。除此之外，我們也變更擠壓進程與受壓容器剛性等實驗參數，以釐清這些參數對於系統驅動流體效果的影響，這對於我們日後在無閥幫浦系統的設計上將有所貢獻。

In recent years, valveless pumps have widely been used in various engineering and biomedical systems. Since there are no moving valves inside a valveless pump system, we could maintain the system with more ease, and avoid contaminating the working fluid in the system.
In this work, we use two rigid tubes with different lengths to connect an actuator with two open style acrylic water reservoirs, which constitute our experimental system. Then, we demonstrate that the threshold frequency(the lowest driving frequency of the actuator beyond which the pliant part of a precompressed system having a nominal duty cycle of unity would separate from the actuator) plays an important role in the open-loop valveless pumping system. Moreover, we discuss in thesis the influence of actuator impact on the performance of the open-loop valveless pumping system. For that purpose, we recorded the displacements of the actuator and the pliant part of the system in the experiments, and then analyzed how the interactions between the actuator and the pliant part of the system influence working fluid transport. In addition, we also vary the stroke of the actuator and the rigidity of pliant part of the system in the experiments, so as to investigate the effects of such parameters on the system performance.

摘要 ..................................................... I
英文摘要 ................................................. II
致謝 ................................................... III
目錄 .................................................... IV
表目錄 .................................................. VI
圖目錄 ................................................. VII
符號說明 ................................................ XII

第一章  緒論 .............................................. 1
  1.1 研究背景 ............................................ 1
  1.2 文獻回顧 ............................................ 3
  1.3 無閥幫浦系統相關應用 ................................ 13
   1.3.1 散熱系統 ........................................ 13
   1.3.2 心臟體外反搏治療 ................................. 14
   1.3.3 心室輔助裝置 .................................... 16
  1.4 研究目的 ........................................... 17
  1.5 本文架構 ........................................... 18
第二章  實驗系統架構 .....................................  19
  2.1 實驗系統架設 ....................................... 19
  2.2 擠壓致動器設計 ..................................... 19
  2.3 量測儀器 ........................................... 22
   2.3.1 高速攝影機 ...................................... 22
   2.3.2 流量計 ......................................... 24
   2.3.3 位移感測器 ...................................... 26
   2.3.4 馬達、馬達控制器、訊號擷取卡和電源供應器 ............ 28
第三章  實驗流程與參數 .................................... 31
  3.1 實驗流程 ........................................... 31
  3.2 實驗參數 ........................................... 33
第四章  實驗結果與討論 .................................... 36
  4.1 預壓系統 ........................................... 37
   4.1.1 門檻頻率 ........................................ 37
   4.1.2 液面高度差 ...................................... 42
   4.1.3 碰撞型態 ........................................ 46
  4.2 無預壓系統 ......................................... 49
   4.2.1 液面高度差 ...................................... 49
   4.2.2 碰撞型態 ........................................ 52
  4.3 碰撞速度 ........................................... 56
  4.4 擠壓進程與伸縮囊剛性 ................................ 59
  4.5 擠壓幫浦之驅動流體性能 .............................. 64
第五章  結論與未來工作 .................................... 68
  5.1 結論 .............................................. 68
  5.2 未來工作 ........................................... 70
參考文獻 ................................................. 72

                                    

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校外：2012-07-04公開

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