公开(公告)号：WO2017143046A1

公开(公告)日：2017-08-24

申请号：PCT/US2017/018146

申请日：2017-02-16

Applicant: REGAL BELOIT AMERICA, INC.

Inventor： PIROUZPANAH, Sahand ,  FENG, Sylvia (Yuan) ,  SELKING, Paul ,  VATKAR, Shirish ,  HENRY, Joseph ,  BALAGURU, Rajavel

IPC: F04D29/28 ,  F04D29/30

CPC classification number: F04D29/283 ,  F04D17/105 ,  F04D25/08 ,  F04D29/282 ,  F04D29/30 ,  F04D29/424

Abstract: A forward curved blower wheel has fan blades having relatively small leading edge blades angles and a relatively lengthy mean camber lines. The blower wheel also comprises leading edge notches adjacent its blower wheel inlet. The leading edge notches eliminate buffeting that would occur with such blades if such notches were not present.

Abstract translation: 向前弯曲的鼓风机叶轮具有风扇叶片，其具有相对较小的前缘叶片角度和相对较长的平均弧线。 鼓风机叶轮还包括邻近鼓风机叶轮入口的前缘凹口。 前缘切口消除了如果这种切口不存在时可能出现的抖动。

公开(公告)号：WO2017205031A1

公开(公告)日：2017-11-30

申请号：PCT/US2017/031139

申请日：2017-05-04

Applicant: REGAL BELOIT AMERICA, INC.

Inventor： PIROUZPANAH, Sahand ,  HENRY, Joseph ,  VATKAR, Shirish M.

IPC: F04D29/28 ,  F04D29/42 ,  F04D29/44 ,  F04D29/46 ,  F04D29/62

CPC classification number: F04D25/08 ,  F04D29/282 ,  F04D29/283 ,  F04D29/4226 ,  F04D29/441 ,  F04D29/661

Abstract: A centrifugal blower for HVACR applications includes a squirrel cage forward-curved blower fan and a scroll housing. The blower fan comprises a plurality of blades that are configured to emit air radially outward and tangentially from between the blades when the blower fan rotates at a first speed. The air so emitted has a deviation angle defined as the difference between the direction of the emitted air and the blade exit angle. The scroll housing has a spline-shaped wall that has an axial cross-section that is configured such that the deviation angle of the air emitted from the blower fan at an axial plane deviates by no more than fifteen percent circumferentially about the blower fan in between the spline-shaped wall and the blower fan and such that the average tangential velocity of air between the spline-shaped wall and the blower fan deviates by no more than thirty percent.

Abstract translation: 用于HVACR应用的离心式鼓风机包括鼠笼前向弯曲鼓风机风扇和蜗壳。 鼓风扇包括多个叶片，所述叶片构造成当鼓风扇以第一速度旋转时从叶片之间沿径向向外和切向排出空气。 如此排出的空气具有偏差角度，该偏差角度定义为排出空气的方向与叶片出口角度之间的差异。 涡旋壳体具有花键形壁，该花键形壁具有轴向横截面，该轴向横截面构造成使得在轴向平面处从鼓风机排出的空气的偏差角度在围绕鼓风机之间的圆周方向上偏离不超过百分之十五 花键形壁和鼓风扇，并且使得花键形壁和鼓风扇之间的平均空气切向速度偏差不超过百分之三十。