| 摘要 |
PROBLEM TO BE SOLVED: To resolve problems wherein, though efficient dust removing is attained by increasing filtering area by forming a filter disposed in a dust removing device in zigzag, the filter deflects by air resistance to impair dust removing effect by contact of filter faces of an air passing side each other. SOLUTION: In a main filter 8, form retaining materials 9 are packed inside a filter body 8a formed bag-like. Even if the filter body 8a receives load in the crushing direction by resistance of air passing through the main filter 8, the bag-like form is maintained with little deformation. As a result, even if spaces S between the adjacent filter bodies 8a are made small, no problem is caused, efficient dust removing is performed. COPYRIGHT: (C)2007,JPO&INPIT
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