| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ventilation device capable of adjusting an air volume without lowering static pressure with respect to the ventilation device having a decorative panel closing a front face of a suction opening of an axial-flow air blower. <P>SOLUTION: In this ventilation device disposed on a through hole 2 penetrating through a partitioning wall, provided with the axial-flow air blower 3 assembled in a main body frame 4 mounted on the through hole 2, and having a main suction opening 6 and a flange 7 constituting a planar part continuing to an outer periphery of the main suction opening 6, at an indoor side of an air channel 5, the flange 7 and a front face of the main suction opening 6 are covered by the decorative panel 12 provided with suction openings 15 in the four directions at prescribed intervals, and a roughly conical guide member 16 is disposed on a back face of the decorative panel 12 in a state of projecting roughly toward the center of the main suction opening 6. A partitioning plate 18 is disposed to radially partition an inclined part of the guide member 16 toward the suction openings 15 formed in the four directions, and a movable shutter 20 is disposed to open and close the suction opening 15 of at least one direction. <P>COPYRIGHT: (C)2009,JPO&INPIT |
