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.

公开(公告)号：US10971968B2

公开(公告)日：2021-04-06

申请号：US15888793

申请日：2018-02-05

Applicant: ALSTOM Transport Technologies

Inventor： Thomas Mas

IPC: H02K5/24 ,  F04D29/66 ,  F04D25/08 ,  H02K9/06 ,  H02K5/04 ,  F04D17/16 ,  F04D19/00 ,  H02K5/20 ,  H02K7/14 ,  B61C3/00

Abstract: The self-ventilated motor (10) comprises a casing (12) having an air inlet opening (18) and an air outlet opening (20) and delimiting an air passage between the air inlet opening (18) and the air outlet opening (20), drive means (13) comprising a shaft (22) housed in the casing (12), a ventilation propeller (24) connected to the shaft (22) upon rotation and housed in the air passage, and a noise reduction device (26). The noise reduction device (26) comprises a first noise reduction member (28), attached to the casing (12) at the air inlet opening (18), a second noise reduction member (30) arranged on the ventilation propeller (24), and a third noise reduction member (32) fixed to the casing (12) at the air outlet opening (20).