空气净化器适用场所及自净时间——关于空气净化器几个问题的探讨（2）
Applicable situation and cleanliness recovery time of air cleaners—Discussion on several problems about air cleaners (2)
摘要：
分析了空气净化器在实际使用过程中的自净时间，探讨了空气净化器的适用场所。指出可以采用图算法计算空气净化器的自净时间，提高换气次数n比提高空气净化器的过滤效率η更有利于缩短自净时间。认为空气净化器不能代替洁净室的净化空调系统。
关键词：空气净化器,自净时间,净化空调系统,换气次数,过滤效率
Abstract：
Analyses the cleanliness recovery time of air cleaners in practical use. Discusses the applicable situation of air cleaners. Points out that the graphical determination method should be employed to calculate the cleanliness recovery time of air cleaners, and that increasing the air change rate (n) is more beneficial to the cleanliness recovery time of air cleaners than increasing total filter efficiency. Considers that the air cleaner can not take the place of the clean air conditioning system of clean rooms.
Keywords:air cleaner, cleanliness recovery time, clean air conditioning system, air change rate, filter on efficiency