| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation device easy in maintenance of a fan unit or the like. SOLUTION: In an intermediate duct fan 2, a fan motor 42 and a motor driving base 44 (base for motor) are mounted on a fan case 40 to constitute a fan case unit 18, and the fan case unit 18 is detachable from a housing case 23 as a main housing. COPYRIGHT: (C)2006,JPO&NCIPI
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