| 摘要 |
A dual direction axial fan (10) is provided and includes a body (20) having a retention assembly (21) and being rotatable in first or second directions, a blade (30) being retained by the retention assembly such that the airfoil section (31) extends from the body (20) with the blade (30) assuming first, second or third orientations and a switching mechanism (40) coupled to the retention assembly (21) to urge the blade (30) to assume the second or the third orientation when the body (20) rotates in the first or the second direction, respectively.
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