CLEANING METHOD OF TIGHTLY CLOSED SPACE AND TIGHTLY CLOSED SPACE WITH CLEANING FUNCTION

摘要

PROBLEM TO BE SOLVED: To effectively capture and remove a gaseous contaminant with particulates by extending a freely workable effective area. SOLUTION: In a cleaning device for the tightly closed space using an ultraviolet ray source 2, a photoelectron emitting material 3 and/or a photocatalyst, a cleaning unit 3 integrated so as to surround the photoelectron emitting material 3 and/or the photocatalyst with the ultraviolet ray source 2 as the center is installed on the floor 14 of the tightly closed space or on the under part of the floor 14 through a parting plate. The cleaning unit 3 can be used in combination with the purification by an ion exchange fiber.