公开(公告)号：US20240328429A1

公开(公告)日：2024-10-03

申请号：US18735395

申请日：2024-06-06

Applicant: ABB SCHWEIZ AG

Inventor： Xiaoliang Zhou ,  Yang Xu ,  Weimin Li

IPC: F04D29/28 ,  F04D1/00 ,  H02K9/06

CPC classification number: F04D29/281 ,  F04D1/00 ,  H02K9/06

Abstract: An electrical machine that includes a centrifugal fan. The centrifugal fan is for cooling an electrical machine and configured to rotate around a rotating axis. The centrifugal fan includes a first plate with an air inlet configured to face a rotor of the electrical machine to receive air; a second plate spaced apart from the first plate in a direction parallel to the rotating axis (R); a plurality of first blades arranged between the first plate and the second plate; and a plurality of second blades arranged on a side of the second plate away from the first plate and configured to reduce an air pressure in vicinity of the second plate.

公开(公告)号：US20240243629A1

公开(公告)日：2024-07-18

申请号：US18561724

申请日：2021-06-21

Applicant: ABB SCHWEIZ AG

Inventor： Pei Yan ,  Weimin Li

IPC: H02K1/32

CPC classification number: H02K1/32

Abstract: An air duct assembly for a rotor of an electric machine and associated rotor and electric machine. The air duct assembly includes a base plate arranged between core laminations of the rotor, where the base plate has ventilation holes axially aligned with inlet channels of the rotor respectively; and a plurality of airflow guides axially protruding from a radial outer portion of an end surface of the base plate relative to the ventilation hole. The plurality of airflow guides includes a plurality of first guiding members extending radially; and a plurality of second guiding members arranged between the first guiding member and the ventilation holes and radially spaced apart from the first guiding member by a predetermined distance.