| 摘要 |
PURPOSE:To maintain a uniform flow of air all over the surface of a filter, by providing a filter enclosed by a frame, a spacer attached to the surface of said filter, and a supporting rod which fixes and connects those components as stated above. CONSTITUTION:A frame 1 encloses filters 2, to the surface of which spacers 3 are attached, while a supporting rod 4 is connected to be fixed to the frame 1 and the spacers 3. The spacers 3 keeps the space between the filters 2 to maintain an uniform flow of air all over the surface of the filters. And the filters 2 are adhered and fixed by means of the supporting rod 4 to be reinforced in strength thereof. Accordingly, even when pressure is given on the upstream side of the filters 2, deflection and collapse thereof is avoided, causing uniform flow of aid to be maintained all over the surface of the filters 2. |
