| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption in a blower. SOLUTION: Each blade 5 is formed into an approximately rectangular shape with an inner side 5a arranged on the side of a motor shaft 4 and an outer side 5b arranged on the side of an orifice 1 in a periphery. In the approximately rectangular shape, a front side 5c connecting the inner side 5a and the outer side 5b is formed into such a shape that the center thereof is projected to a rotation side and the portion thereof from a projecting portion A to the side of the inner side 5a and the side of the outer side 5b is gently curved to a side opposite to a rotating direction. In the approximately rectangular shape, a rear side 5d connecting the inner side 5a and the outer side 5b is formed into such a shape that the center thereof is projected to the rotation side and the portion thereof from a projecting portion B to the side of the inner side 5a and the side of the outer side 5b is gently curved to a side opposite to the rotating direction. COPYRIGHT: (C)2011,JPO&INPIT |
