公开(公告)号：US20190323516A1

公开(公告)日：2019-10-24

申请号：US16386064

申请日：2019-04-16

申请人： Johnson Electric International AG

发明人： Chuanjiang GUO ,  Chuanhui FANG ,  Feng XUE ,  Hongguang LI ,  Shaopeng MO ,  Guilin LI

IPC分类号： F04D29/22 ,  F04D29/24

摘要： An impeller includes a base plate, a hub protruding from the base plate, and a number of blades connected to the base plate and extending from a lateral surface of the hub toward an edge of the base plate. Opposite sides of each of the blades are a working surface and a non-working surface. The base plate is divided into a plurality of sub-plates by the plurality of blades. Each of the sub-plates is located between two adjacent blades and connected to the non-working surface of one of the two adjacent blades and the working surface of the other one of the two adjacent blades. A distance from an edge of each of the sub-plates to a center of rotation of the impeller is varied.

公开(公告)号：US20190040874A1

公开(公告)日：2019-02-07

申请号：US16157536

申请日：2018-10-11

申请人： Johnson Electric International AG

发明人： Chuan Jiang GUO ,  Chuan Hui FANG ,  Feng XUE ,  Feng LIU ,  Ji Cheng PAN ,  Gang PAN ,  Yong Qiang SONG

IPC分类号： F04D29/44 ,  F04D29/58 ,  F04D25/06 ,  F04D17/16 ,  F04D29/28

摘要： A centrifugal blower includes an electric motor, a centrifugal impeller driven by the motor, a diffuser mounted to the motor and disposed between the motor and the centrifugal impeller, and a casing mounted to the diffuser. The centrifugal impeller is received in a chamber defined by the diffuser and the casing. the casing defines an opening facing the inlet of the centrifugal impeller. The diffuser has a plurality of passage walls, and a plurality of diffusing passages, each bounded by neighboring passage walls. The diffuser further has at least one mounting portion connected to one of the passage walls. A cross section of each of the diffusing passages is increased form an outer end to an inner end thereof and no throat is formed in each of the diffusing passages.