| 摘要 |
PURPOSE: A damper device for a local clean section is provided to remove an installation position limit by including a lattice type structure which is easily installed on a wall. CONSTITUTION: A lattice frame(120) fixes an edge thereof to a wall(110) and includes an exhaust port(122) connected to a plurality of local clean sections(S1,S2) inside. The frame is divided by a vertical member(136) in parallel to right and left members. An opening and closing unit(150) has a plurality of rotary central shafts regularly arranged in parallel. A tension control unit(170) controls the rotation intensity of a wing which reacts with pressure difference of the local clean section. |
