CLEANLINESS CLASSIFYING METHOD AND CLEANLINESS CLASSIFYING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a cleanliness classifying method and a cleanliness classifying system that is inexpensive, has high safety, and can effectively keep cleanliness of a second room, when the second room is managed in a cleaner state than a first room, of the adjacent first and second rooms between which a person can go and come via the doorways.;SOLUTION: A purifying device 1 is arranged above the doorway 103 on the first room side 101, and delivers air containing purification ions from the upside to the downside of the doorway 103.;COPYRIGHT: (C)2007,JPO&INPIT