N95级个体防尘呼吸器仿真试验研究

doi:10.16265/j.cnki.issn 1003-3033.2020.12.023

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (12): 165-172.doi: 10.16265/j.cnki.issn 1003-3033.2020.12.023

N95级个体防尘呼吸器仿真试验研究

朱金佗^1,2,3 讲师, 王亮^**1,3 教授, 何新建^1,2,3 研究员, 吕成明^1,2,3, 张如雪^1,2,3, 蒋奇君³

1 中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州 221116;
2 中国矿业大学矿山瓦斯粉尘灾害技术基础研究国家级专业中心实验室,江苏徐州 221116;
3 中国矿业大学安全工程学院,江苏徐州 221116

收稿日期:2020-09-18 修回日期:2020-11-11 出版日期:2020-12-28 发布日期:2021-07-15
通讯作者: **王亮(1982—),男,江苏连云港人,博士,教授,主要从事职业安全与健康等方面的研究。E-mail: wangliang@cumt.edu.cn。
作者简介:朱金佗 (1989—),男,河南安阳人,博士,讲师,主要从事气溶胶污染分析及控制、呼吸防护装备评测及研发、矿井粉尘防治等方面的研究。E-mail: zhjtcumt@163.com。
基金资助:
国家自然科学基金资助(51904291);江苏省基础研究计划项目(BK20190638);中央高校基本科研业务费专项资金资助(2020XGYJ08)。

Analogue simulation and experimental study on N95 individual dust prevention respirator

ZHU Jintuo^1,2,3, WANG Liang^1,3, HE Xinjian^1,2,3, LYU Chengming^1,2,3, ZHANG Ruxue^1,2,3, JIANG Qijun³

1 Key Laboratory of Ministry of Education for Gas and Fire Control in Coal Mines, China University of Mining and Technology, Xuzhou Jiangsu 221116, China;
2 National Professional Laboratory for Fundamental Research of Mine Gas and Dust Control Technology, China University of Mining and Technology, Xuzhou Jiiangsu 221116, China;
3 School of Safety Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221116, China

Received:2020-09-18 Revised:2020-11-11 Online:2020-12-28 Published:2021-07-15

摘要/Abstract

摘要： 为研究工业常用自吸过滤式防颗粒物N95级防护口罩的过滤效率、呼吸阻力和品质因数,构建一套个体防尘呼吸器仿真测试系统,并以10～205 nm的NaCl气溶胶为测试介质,在恒定抽气流量和模拟人体呼吸的循环流量2种模式下,在15～85 L/min的流量区间内,分别测试N95和KN95口罩各一款。研究表明:受测N95和KN95口罩的过滤效率均超过95%;以驻极体纤维为滤料的口罩最易穿透粒径在40～60 nm;相同大小的测试流量时,循环流量模式下颗粒物的穿透率显著高于恒定抽气流量;随吸气流量的升高,受测口罩的穿透率呈线性增加,吸气阻力呈正抛物线升高,而品质因数呈幂指数降低。

关键词: N95, 个体防尘, 呼吸器, 流量, 过滤效率, 呼吸阻力, 粒径

Abstract: In order to investigate filtration efficiency, breathing resistance and quality factors of non-powered air-purifying N95 respirators which have been widely used against particulate matters, an analogue simulation system of respiratory protection against dust was established. With NaCl aerosol at 10-205 nm as testing medium, N95 and KN95 respirators were tested under constant flow mode and simulated human respiratory circulation flow mode between range of 15-85 L/min. The results show that filtration efficiency of tested N95 and KN95 respirators is both higher than 95%. The most penetration particle size for respirators with electret fiber as filter material roughly falls between 40-60 nm. When at same test flow rate, particle penetration under circulation flow mode is significantly higher than that of constant flow. And along with increase of inhalation flow, particle penetration of respirators increase linearly, inhalation resistance shows parabolic increase, while quality factors decrease exponentially.

Key words: N95, individual dust prevention, respirator, test flow, filtration efficiency, breathing resistance, particle size

中图分类号:

X964

朱金佗, 王亮, 何新建, 吕成明, 张如雪, 蒋奇君. N95级个体防尘呼吸器仿真试验研究[J]. 中国安全科学学报, 2020, 30(12): 165-172.

ZHU Jintuo, WANG Liang, HE Xinjian, LYU Chengming, ZHANG Ruxue, JIANG Qijun. Analogue simulation and experimental study on N95 individual dust prevention respirator[J]. China Safety Science Journal, 2020, 30(12): 165-172.

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N95级个体防尘呼吸器仿真试验研究

Analogue simulation and experimental study on N95 individual dust prevention respirator

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