| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter device which enables the easy replacement of a base material and can well stand a high wind pressure. SOLUTION: A plate-like base members 10 are arranged like a folding screen in a square barrel-shaped casing 9 provided with a top plate 1, a bottom plate 2 and two side plates 3 in and having a depth a ventilation direction, and the upstream-side side face and the downstream-side side face of each base member 10 are fastened with a bar-like upstream-side frame 4 and a bar-like downstream-side frame 5 spanned across a space between the top and bottom plate 1, 2. In the filter device of the described construction, the upstream-side frame 4 has an upper claw 4b and a lower claw 4d formed on the upper and lower end of the upstream-side frame 4. These upper claw 4b and the lower claw 4c are fitted into small hoes 1a, 2a formed in the top plate 1 and the bottom plate 2, so that the upstream-side frame 4 is supported in a freely detachable manner. Thus any of the base members 10 can be replaced by removing the upstream-side frame 4. |
