| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust capture device demonstrating enough capacity with less exchange frequency of filters without increasing the number of the filters nor increasing the scale of the device itself, even in a dusty environment. SOLUTION: The dust capture device includes a rolled filter 20 stretched between first and second winding shafts 33a, 33b, and unused part of the filter being wound around the second winding shaft; a brush 41 provided between the first and second winding shafts to come into contact with the surface of the filter; a feeding mechanism driving the first and second winding shafts to take up or rewind the filter; an opening 35 provided to guide atmospheric air passing through the filter face; and a feeding control unit controlling the feeding mechanism. The feeding control unit, when operating the renewal operation of feeding the unused part of the filter from the second winding shaft, controls the feeding mechanism such that once the filter is taken up by the first winding shaft by an take-up amount La, the filter is rewound by the second winding shaft by a rewind amount Lb, and La and Lb satisfy a relationship La≥Lb. COPYRIGHT: (C)2010,JPO&INPIT |
