公开(公告)号：US20190186499A1

公开(公告)日：2019-06-20

申请号：US16219291

申请日：2018-12-13

Applicant: REGAL BELOIT AMERICA, INC.

Inventor： SAHAND Pirouzpanah ,  Rajavel Balaguru ,  Padmasri Nanduri ,  Joseph Aaron Henry ,  Shirish Vatkar

IPC: F04D29/42 ,  F04D17/08 ,  F04D29/44 ,  F04D29/62

CPC classification number: F04D29/4226 ,  F04D17/08 ,  F04D29/162 ,  F04D29/44 ,  F04D29/62

Abstract: A centrifugal blower assembly includes a scroll wall, a pair of opposing sidewalls, and an adjustable cutoff plate. The scroll wall is positioned between the pair of opposing sidewalls such that the scroll wall and opposing sidewalls together define a blower chamber and a blower outlet. The scroll wall extends circumferentially between a cutoff point to an end point and defines a cutout extending circumferentially from the cutoff point. The scroll wall, the pair of opposing sidewalls, and the cutoff point define a blower outlet. The blower outlet defines a blower outlet area. The adjustable cutoff plate is adjustably positioned within the cutout to define a notch defining a notch area. The notch area and the blower outlet area define a total blower outlet area.