Title:
鉄道駆動用電動機アセンブリ
Document Type and Number:
Japanese Patent JP7260261
Kind Code:
B2
Abstract:
An electric motor assembly (100) for railway drive. The motor assembly (100) comprises:
- an electric drive motor (10);
- a ventilation and cooling device (20) for ventilating and cooling the electric drive motor (10) through cooling air; and
- a draining device (30) to drain the ventilation and cooling air flow. The draining device (30) is provided with a silencer device (70) for the cooling air flow. The silencer device (70) comprise at least one straight channel (39D) to reduce the turbulent flow into a substantially laminar flow of the out-flowing ventilation and cooling air. Furthermore, the draining device (30) comprises a scroll (300), which consists of two separate arched channels (39A, 39B) in order to avoid the formation of stationary vortices. The two arched channels (39A, 39B) communicate with one another, from the fluidic point of view, only in a common outlet area (39C) for the ventilation and cooling air.
Inventors:
Mario Porzio
Ciro Maiello
Simone Sinatti
Ciro Maiello
Simone Sinatti
Application Number:
JP2018141301A
Publication Date:
April 18, 2023
Filing Date:
July 27, 2018
Export Citation:
Assignee:
hitachi rail societa per azioni
International Classes:
H02K5/24; B61C3/00
Domestic Patent References:
| JP2002233104A | ||||
| JP58006562U | ||||
| JP1167500A |
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Koichi Ito
Kentaro Ito
Keiji Akagi
Shinji Mihashi
Koichi Ito
Kentaro Ito
Keiji Akagi
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