| 摘要 |
PROBLEM TO BE SOLVED: To reduce pressure loss of a blower unit 14. SOLUTION: In the blower unit 14, an electric motor 17 extends vertically at an upper end and a lower end of a rotary shaft 17b out of a motor housing 17a, respectively. Fans 18, 21 are connected to the upper end and lower end of the rotary shaft 17b of the electric motor 17 so that their air suction directions are coincident with each other. The fans 18, 21 can suck air flows without steep changes in entrance directions of the air flows near intake openings 15d, 16d and are reduced in pressure loss. Thereby, generation of noise can be inhibited. COPYRIGHT: (C)2008,JPO&INPIT
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