| 摘要 |
PROBLEM TO BE SOLVED: To provide a double electric fan device for a vehicle capable of reducing noise during the rotation of electric fan rotation. SOLUTION: The double electric fan device for a vehicle has two electric fans provided on an heat exchanger. The two electric fans arranged in a left-and-right direction of a fan shroud consists of an even fan blade pitch electric fan 2 having 11 fan blades 21 and an uneven fan blade pitch electric fan 3 having 9 fan blades 31. COPYRIGHT: (C)2008,JPO&INPIT
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