CPC F24F 13/24 (2013.01) [G10K 11/162 (2013.01); F24F 2013/242 (2013.01)] | 30 Claims |
1. A ventilation assembly comprising:
a main housing defining an inlet through which air can be received into the main housing and defining an outlet;
a blower in the main housing and operable to generate a flow of air; and
a grille configured to be located adjacent to the main housing inlet, the grille defining an outlet aperture and having a plurality of acoustic features arranged annularly about the outlet aperture to reduce sound generated by the blower,
wherein each of the acoustic features comprises at least an outer acoustic body and an inner acoustic body spaced apart from each other and aligned radially relative to the outlet aperture.
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