CPC F04D 29/4233 (2013.01) [F04D 29/422 (2013.01); F24F 13/081 (2013.01); F24F 2013/205 (2013.01)] | 20 Claims |
1. A blower, comprising:
a centrifugal fan;
a fan wheel of the centrifugal fan comprising a rotational axis;
a plurality of blades of the centrifugal fan, wherein each blade of the plurality of blades comprises an inner blade boundary coupled to the fan wheel and a body that extends radially outwardly from the fan wheel to an outer blade boundary; and
a blower housing, comprising:
a first housing panel and a second housing panel disposed on opposite sides of the centrifugal fan and extending transverse to the rotational axis of the fan wheel;
a wall extending about the rotational axis and between the first housing panel and the second housing panel; and
a flange having a camber geometry and extending outwardly from an edge of the wall, wherein: a length of the flange is between 10 percent and 30 percent of a radial distance from the rotational axis to the outer blade boundary, a distal end of the flange is positioned away from the wall by a radial distance of between 2 percent and 10 percent of the radial distance from the rotational axis to the outer blade boundary, or both.
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