| 摘要 |
An electric fan core having a generally rectilinear shape, a positive pressure side, and a vacuum side is disclosed. A fan bracket attached to the positive pressure side of the electric fan core and offset from the fan core thereby defining a gap between the fan core and the fan bracket, the gap having a width less than an amount required to sustain a Venturi effect air intake when the electric fan core is in an operating state is disclosed. A grille attached to the vacuum side of the fan core and having a grille face that is offset from the fan core, the offset being greater than an amount of offset required to reduce turbulence noise from the grille face when the electric fan core is in an operating state is also disclosed.
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