US 11,713,771 B2
Blower housing for blower of HVAC system
Kirankumar A. Muley, Pune (IN); Pankaj B. Avhad, Nashik (IN); Sumedh J. Suryawanshi, Pune (IN); and Tukaram R. Suryawanshi, Pune (IN)
Assigned to Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed by Johnson Controls Tyco IP Holdings LLP, Milwaukee, WI (US)
Filed on Nov. 7, 2022, as Appl. No. 17/982,309.
Application 17/982,309 is a continuation of application No. 16/725,924, filed on Dec. 23, 2019, granted, now 11,493,056.
Prior Publication US 2023/0057952 A1, Feb. 23, 2023
Int. Cl. F04D 29/42 (2006.01); F24F 13/08 (2006.01); F24F 13/20 (2006.01)
CPC F04D 29/4233 (2013.01) [F04D 29/422 (2013.01); F24F 13/081 (2013.01); F24F 2013/205 (2013.01)] 20 Claims
OG exemplary drawing
 
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.