公开(公告)号：US20180048211A1

公开(公告)日：2018-02-15

申请号：US15673887

申请日：2017-08-10

Applicant: ALSTOM Transport Technologies

Inventor： Philippe Dubois ,  Thomas Mas ,  Andry-Mamy Randria ,  Michel Scherer ,  Jean-Pierre Lombard

IPC: H02K5/24 ,  H02K9/04

CPC classification number: H02K5/24 ,  H02K9/04 ,  H02K9/06

Abstract: The electric motor includes a frame defining an inner volume (VI) wherein is accommodated a rotor, a stator and a fan, the frame comprising a first aperture placing the inner volume (VI) of the frame in fluidic communication with the outside of the frame, a second aperture placing the internal volume (VI) of the frame in fluidic communication with the outside of the frame along a radial axis (R) substantially perpendicular to an axis of rotation (X) of the rotor. The fan being positioned in proximity to the second aperture and being configured for generating a gas fluid flow (F), at least one acoustic attenuation device is accommodated in the second aperture so as to partly close the second aperture.

公开(公告)号：US10855139B2

公开(公告)日：2020-12-01

申请号：US15673887

申请日：2017-08-10

Applicant: ALSTOM Transport Technologies

Inventor： Philippe Dubois ,  Thomas Mas ,  Andry-Mamy Randria ,  Michel Scherer ,  Jean-Pierre Lombard

IPC: H02K5/24 ,  H02K9/06 ,  H02K9/04

Abstract: The electric motor includes a frame defining an inner volume (VI) wherein is accommodated a rotor, a stator and a fan, the frame comprising a first aperture placing the inner volume (VI) of the frame in fluidic communication with the outside of the frame, a second aperture placing the internal volume (VI) of the frame in fluidic communication with the outside of the frame along a radial axis (R) substantially perpendicular to an axis of rotation (X) of the rotor. The fan being positioned in proximity to the second aperture and being configured for generating a gas fluid flow (F), at least one acoustic attenuation device is accommodated in the second aperture so as to partly close the second aperture.