Investigating the Use of Na2SO4 and MgSO4 Electrolytic Solutions for Bulk Electrolysis Micro-Flowrate Pump

電解式微流量幫浦設計與開發

楊詔剴(Chao-Kai Yang) ； 柯智元(Jhih-Yuan Ke) ； 林銘哲(Ming-Che Lin) ； 林紋仕(Wen-Shih Lin) ； 鄭宗杰(Tsung-Chieh Cheng)

《中國機械工程學刊》 40卷1期 (2019/02) Pp. 73-82

摘要

A bulk energy-efficient electrolytic micro flowrate pump which generated the electrolytic gas to push syringe to inject the medicine are investigated in this paper. Two electrolytic solutions: Na2SO4 and MgSO4, are electrolyzed to use as the power resource for pump. The results indicated that the preparation time of syringe injection is shorter with MgSO4 electrolytic solution because of its lower impedance, as well as shortened entire operation time for the pump. However, the results also showed that it would be more difficult to control the process of electrolysis with MgSO4 electrolytic solution because it easily yield white MgO precipitants in electrolysis, which caused unstable syringe injection flow rate, and decreased operating efficiency of pump. On the other hand, when using Na2SO4 electrolytic solution with higher impedance, it will cause longer preparation region and entire operation time for the pump. Due to there's no precipitants yielded from the process of electrolysis, thus its syringe injection flow rate would be stable and controllable, as well as higher operating efficiency. In addition, experimental result showed that a higher electrolytic current would result a higher syringe injection flowrate, and increase the operating efficiency for electrolytic pump.

關鍵字

micro flow ； electrolysis pump ； electrochemistry

並列摘要

本研究主要是設計出低耗能之電解式微流量幫浦，研究電解之方式，將產生的氣體推動複合式氣壓缸來推動針筒進行藥物注射之動作。研究中使用兩種不同電解液Na2SO4與MgSO4電解做為幫浦之動力來源並討論其優劣性。結果顯示使用MgSO4電解液其阻抗較低，因此具有較短的針筒注射準備時間，並縮短幫浦整體操作時間。但是MgSO4電解液在電解時會產生白色生成物，較不容易去控制電解過程，造成針筒注射流量較不穩定，幫浦操作效率下降。然而若使用Na2SO4電解液時，雖然電解液阻抗較高，準備區與幫浦整體操作時間較長。但因為在電解過程沒有任何生成物產生，針筒注射流量穩定且容易控制，並有較高的操作效率。此外，實驗結果也顯示較大的通電電流將會產生較大的針筒注射流量，將會提高電解式幫浦的操作效率。