一种生物气溶胶旋风式分离采集装置的设计与验证  

Design and verification of wind-driven bioaerosol separation and sampling inlet device

作　　者：程智 洪大富 李抄 严新忠[2] 周卫斌[2] 杜耀华 CHENG Zhi;HONG Da-fu;LI Chao;YAN Xin-zhong;Zhou Wei-bin;DU Yao-hua(Institute of Medical Support Technology,Academy of System Engineering,Academy of Military Science of Chinese PLA,Tianjin 300161,China;College of Electronic Information and Automation,Tianjin University of Science and Technology,Tianjin 300222,China)

机构地区：[1]军事科学院系统工程研究院卫勤保障技术研究所,天津300161 [2]天津科技大学电子信息与自动化学院,天津300222

出　　处：《医疗卫生装备》2021年第3期12-20,共9页Chinese Medical Equipment Journal

摘　　要：目的:设计一种生物气溶胶旋风式分离采集装置,为小粒径生物气溶胶分离采集和分析提供有效手段。方法:对经典旋风式分离采集装置结构参数进行优化,借助Fluent软件对筒体直径等关键结构参数对粒径分离效果的影响进行模拟仿真,确定生物气溶胶旋风式分离采集装置的最优结构参数,之后采用高纯铝材料制作生物气溶胶旋风式分离采集装置。采用TSI9310尘埃粒子计数器和六级安德森采样器对设计的生物气溶胶旋风式分离采集装置的粒径分离效果进行实验验证。结果:设计的生物气溶胶旋风式分离采集装置筒体直径为18 mm,该装置对于粒径小于3.3μm的生物气溶胶粒子基本无阻留,对于粒径大于3.3μm的粒子,分离阻留效率随粒径的增加逐渐增大。结论:生物气溶胶旋风式分离采集装置可以有效分离小粒径生物气溶胶粒子、阻留大粒径生物气溶胶粒子,达到粒径分离效果。Objective To design a wind-driven bioaerosol separation and sampling inlet device to facilitate the separation sampling and analysis of small-size bioaerosol.Methods The structural parameters of the classical wind-driven separation and sampling inlet device were optimized and the influences of key structural parameters such as the diameter of the cylinder on the particle size separation effect were simulated with Fluent software,so as to determine the optimal parameters of the wind-driven bioaerosol separation and sampling inlet device.Then the device was made from high purity aluminum.Experimental verification of particle size separation of the device designed was executed with a TSI9310 dust particle counter and a six-stage Anderson sampler.Results The device designed had an 18 mm cylinder diameter,which was essentially non-retentive for bioaerosol particles less than 3.3μm in size,while for particles larger than 3.3μm in size,had its separation retention efficiency increased with the rising particle size.Conclusion The device designed effectively separates small-size bioaerosol particles while retains large-size ones to implement particle size separation.

关 键 词：生物气溶胶 粒径分离 旋风式分离采集装置 Fluent仿真分析 逃逸率 

分 类 号：R318[医药卫生—生物医学工程] R197.39[医药卫生—基础医学]