US 11,982,290 B2
Housing for forward curved blower
Patric Ananda Balan Thobias, Chennai (IN); Vinoth Kumar Settu, Ponmar (IN); Prabhu Prakasam, Chennai (IN); and Sangameshwaran Sadhasivam, Kancheepuram (IN)
Assigned to Lennox Industries Inc., Richardson, TX (US)
Filed by Lennox Industries Inc., Richardson, TX (US)
Filed on Oct. 21, 2021, as Appl. No. 17/451,768.
Prior Publication US 2023/0128902 A1, Apr. 27, 2023
Int. Cl. F04D 29/42 (2006.01); F04D 29/28 (2006.01); F04D 29/30 (2006.01)
CPC F04D 29/4226 (2013.01) [F04D 29/281 (2013.01); F04D 29/30 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A blower for a heating, ventilation and air conditioning system, comprising:
an air inlet;
an air outlet;
a blower wheel comprising blades;
a motor operable to cause the blower wheel to rotate; and
a blower housing within which the blower wheel is positioned, wherein:
the blower housing comprises a top panel, a bottom panel, and a connecting panel, wherein the top panel and the bottom panel are connected to the connecting panel;
the top panel comprises a curved edge extending from a bottom edge of the connecting panel to a top edge of the connecting panel, wherein an expansion angle of the curved edge of the top panel changes as a function of angular position along the curved edge of the top panel; and
the curved edge of the top panel comprises a first section with a first expansion angle, wherein the first section extends from a lower edge of the air outlet to a first angular position along the curved edge of the top panel, and wherein the first expansion angle is in a range from −1.5° to 0°.