注意：液膜的电液动力学雾化。

Note: Electrohydrodynamic atomization of liquid sheet.

作者信息

Lee Yi-Hsuan, Zhang Jingjie, Chen Da-Ren

机构信息

Department of Energy, Environmental, and Chemical Engineering, Washington University, St. Louis, Missouri 63130, USA.

出版信息

Rev Sci Instrum. 2011 Feb;82(2):026111. doi: 10.1063/1.3553400.

DOI:10.1063/1.3553400

PMID:21361650

Abstract

Novel electrohydrodynamic atomization via liquid sheet is presented herein to produce monodisperse. Instead of multiple capillaries/holes used in previous publication, the spray heads with a circular slit exit, shaping the spray liquid into a thin sheet, were utilized. A number of notches were machined along the outer edge of an annular slit to bifurcate the liquid sheet into multiple jets and anchor them to establish the stable multijet operation. The liquid-sheet electrospray heads with 6, 12, and 20 notches were investigated in this study. It is observed that, for spraying liquids of low electrical conductivity, the maximal liquid flowrate of a 20-notched head is 166 times higher than that of single capillary with an inner diameter the same as the slit spacing of studied heads. The above observation evidences that the liquid-sheet electrospray technique and heads have excellent potential for high mass throughput while keeping the spray head cost low.

摘要

本文介绍了一种通过液膜的新型电流体动力学雾化方法来产生单分散液滴。与之前文献中使用的多个毛细管/孔不同，本研究采用了具有圆形狭缝出口的喷头，将喷雾液体成型为薄片。沿着环形狭缝的外边缘加工了多个凹槽，以使液膜分叉成多个射流并使其固定，从而建立稳定的多射流操作。本研究对具有6个、12个和20个凹槽的液膜电喷头进行了研究。研究发现，对于低电导率的喷雾液体，具有20个凹槽的喷头的最大液体流速比内径与所研究喷头的狭缝间距相同的单毛细管的最大液体流速高166倍。上述观察结果证明，液膜电喷雾技术和喷头在保持喷头成本较低的同时，具有实现高质量通量的巨大潜力。