| 摘要 |
PURPOSE:To enlarge a filter area and reduce the operation noise by installing a gusset filter which is formed in curved shape along a gusset line in a ventilation device where a motor, a fan and an uncover are laid out in a frame. CONSTITUTION:This ventilation device provides a filter cover comprising filter covers A and B on both lower and upper sides where a gusset filter 8 is curved along a gusset line and supported. The filter 8 is supported by engaging its both end faces with an ear portion 13A of a filter receiver cover 13. The central part of the filter receiver cover 13 has both ear portion 13A interlinked with a bridge 14 comprising a straight run section 14A and a curverd section 14B. This bridge 14 supports the filter 8 in such a fashion that its central part may be curved. The filer cover 7A is semi-fixed with a fan cover 6 which incorporates a fan 3 with a claw or the like while the filter cover 7B is engaged with the lower part of the filter receiver cover 13. |
