公开(公告)号：WO2023009436A1

公开(公告)日：2023-02-02

申请号：PCT/US2022/038182

申请日：2022-07-25

Applicant: REGAL BELOIT AMERICA, INC.

Inventor： PADIRI, Saigeetha ,  KAMBHAMMETTU, Vijay

IPC: F04D29/42 ,  F04D25/06 ,  F04D17/08 ,  F04D29/00

Abstract: A blower fan assembly comprising a scroll housing, a forward curved blower wheel, and a blower motor adapted to rotate the blower wheel about a blower wheel axis. The forward-curved blower wheel comprises a plurality of fan blades circumferentially spaced about the blower wheel axis. Each of the fan blades has a leading edge with a leading edge angle and a trailing edge with a trailing edge angle. The leading edge angle is at least 50° and not more than 80°. The trailing edge angle is at least 5.5° and not more than 18.5°. The outer radius is not more than 4 inches (101.6 mm).