| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan guard grill for a blower capable of providing a stable noise suppressing effect irrespective of a change of an inflow angle of air. SOLUTION: In regard to cross-sectional shapes of bar members 5a, 5b of the fan guard grill 5 extending in a blowing direction of air, when a direction of a maximum dimension in the cross-sectional shape is a reference axis O, and a dimension in a direction orthogonal to the reference axis O is a width, by forming a wide portion and a narrow portion in a body cross section part, providing the wide portion in portions near to both front and rear ends 51, 52 of the reference axis O, and providing the narrow portion in a center part 53 of the reference axis O, the stable noise suppressing effect can be provided irrespective of a change of the inflow angle of air. COPYRIGHT: (C)2007,JPO&INPIT |
