Air-Outlet-Hood for Self-Ventilated Traction Motors for Rolling Stock
AssigneeALSTOM Holdings
InventorBen Diedrichs
Life of this patent
Estimating the term…
Abstract
An airflow hood for a self-ventilated traction is motor mechanically attached to a casing of the traction motor and substantially surrounds a rotatable motor shaft of the traction motor. The airflow hood includes a main body mounted on the casing, and an air duct presenting at one end an airflow inlet and at the other end an airflow outlet downwardly oriented. The airflow hood is located at a proximal end of the traction motor opposed to a shaft prolonging the rotatable motor shaft for driving an axle. The air-flow outlet is arranged asymmetrically with respect to a longitudinal axis of the traction motor on one side of the traction motor.
Claims12
An airflow hood for a self-ventilated traction motor mechanically attachable to a casing of said traction motor, said airflow hood comprising:
- a main body mountable on said casing and substantially surrounding a longitudinal axis of said traction motor;
- and
- an air duct presenting at one end an airflow inlet and at the other end an airflow outlet;
- wherein, said airflow outlet is oriented downwardly;
- and, when said airflow hood is mounted on said casing, said airflow hood is located at a proximal axial end of the casing opposed to a distal axial end of the casing where a fan is located and from which a rotatable motor shaft axially protrudes to drive an axle.
A self-ventilated motor traction assembly comprising a casing surrounding a rotatable motor shaft transmitting driving power to a gearbox, and a fan attached to the rotatable motor shaft on the side of the gearbox for generating a cooling airflow circulating longitudinally through the self-ventilated traction motor, wherein the self-ventilated traction motor assembly further comprises an airflow hood for guiding a cooling airflow exhaust, the airflow hood comprising:
- a main body mountable on said casing and substantially surrounding a longitudinal axis of said traction motor;
- and
- an air duct presenting at one end an airflow inlet and at the other end an airflow outlet;
- wherein, said airflow outlet is oriented downwardly;
- and, when said airflow hood is mounted on said casing, said airflow hood is located at a proximal axial end of the casing opposed to a distal axial end of the casing where a fan is located and from which a rotatable motor shaft axially protrudes to drive an axle.
Dependencies are inferred from the claim text.