| 摘要 |
PROBLEM TO BE SOLVED: To reduce the size of a blower, and simultaneously increase the air volume of the blower, and further reduce sound during operation. SOLUTION: The blower A is provided with a centrifugal fan 5, a scroll casing 7 accommodating the centrifugal fan 5, and a motive power generator for rotationally driving the centrifugal fan 5. The scroll casing 7 is provided with an air suction port 20 and an air blow-off port 19. A separated wall part 31 separated from a wall part 7a of the scroll casing 7 in an inside/outside direction is provided to the scroll casing 7 to form the scroll casing 7 in a multiple wall structure. COPYRIGHT: (C)2008,JPO&INPIT
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