| 空气湿度对自吸过滤式口罩过滤性能的影响研究 |
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| 引用本文： | 刘飞,柳静献,陈思思,薛建伟,林秀丽.空气湿度对自吸过滤式口罩过滤性能的影响研究[J].中国安全生产科学技术,2017,13(8):18-23. |
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| 作者姓名： | 刘飞 柳静献 陈思思 薛建伟 林秀丽 |
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| 作者单位： | （东北大学 滤料检测中心，辽宁 沈阳 110004） |
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| 摘 要： | 口罩是阻止颗粒物进入人体的有效防护用品，其性能优劣直接影响着佩戴人员的健康与安全。采用国标建议的呼吸阻力实验装置与自制的过滤效率实验装置，对自吸过滤式KN90，KN95系列口罩的呼吸阻力与不同相对湿度下的分级过滤效率进行实验研究。结果表明:所研究的6种口罩的呼气阻力与吸气阻力值不仅满足国标要求，而且满足佩戴舒适性的要求；在同一风速下，气流相对湿度的增加，使2种口罩对粒径为1 μm以下颗粒物的过滤效率降低，对1 μm以上颗粒物的过滤效率没有影响。
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| 关 键 词： | 口罩 呼气阻力 吸气阻力 湿度 分级过滤效率 |
tudy on influence of air humidity on filtration performance of self-inhalation filter respirator |
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| LIU Fei,LIU Jingxian,CHEN Sisi,XUE Jianwei,LIN Xiuli.tudy on influence of air humidity on filtration performance of self-inhalation filter respirator[J].Journal of Safety Science and Technology,2017,13(8):18-23. |
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| Authors: | LIU Fei LIU Jingxian CHEN Sisi XUE Jianwei LIN Xiuli |
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| Affiliation: | (Filter Material Test Center, Northeastern University, Shenyang Liaoning 110004, China) |
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| Abstract: | The respirator is an effective protective equipment to prevent the particles getting into the human body, and its performance directly affects the health and safety of wearer. The experimental study on the respiration resistance and the fractional filtration efficiency under different relative humidity of the self-inhalation filter KN90 and KN95 series respirators was carried out by using the respiratory resistance test device recommended by national standards and the self-made filtration efficiency test device. The results showed that the exhalation resistance and inhalation resistance of the studied six kinds of respirators not only met the requirements of national standards, but also met the requirements of wearing comfort. Under the same wind speed, the increasing relative humidity of airflow reduced the filtration efficiency of 2 kinds of respirators to the particles with the size of less than 1 μm, but had no influence on the filtration efficiency to the particles with the size of larger than 1 μm. |
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| Keywords: | respirator exhalation resistance inhalation resistance humidity fractional filtration efficiency |
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