| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient centrifugal blower with simple casing structure. SOLUTION: An impeller 28 of the centrifugal blower 14 consists of a boss 34 connected to a driving source 24, an annular plate 36 arranged on that circumference, a plurality of axial-flow type first vanes 38 connecting the boss with the annular plate, and a second and a third vane 40, 42 provided on both sides of the annular plate. With such constitution, air at one side of the impeller can be distributed to the other side by the first vane 38, and the air can be efficiently forcibly sent to the centrifugal direction by the vanes 40, 42 on both sides. COPYRIGHT: (C)2004,JPO
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