Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-12-07
2000-06-06
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 54, H02K 900, H02K 916
Patent
active
060722533
ABSTRACT:
An liquid-cooling system for an electrical machine comprises a rotor mounted on a shaft for rotation therewith and defining an axis of rotation, and a stator disposed coaxially with and in opposition to the rotor. The stator has stator windings, the stator windings having an axially-extending portion. The electrical machine further comprises a housing enclosing the stator and the rotor, the housing having an axial end, the axial end having a wall with an inner surface and an outer surface. The electrical machine also includes a cooling tube having a first end and a second end and an embedded portion thereof embedded between the first inner surface and the first outer surface, the embedded portion of the cooling tube located in substantial axial alignment with the axially-extending portion of the stator windings. In another aspect of this design, the inner surface of the wall of the axial end of the housing is substantially flat and is separated from an axial end of the rotor by an air gap. In a third aspect of this design, the housing of the electrical machine comprises a front housing portion and a rear housing portion. The front housing portion defines a first circumferentially-extending channel which encloses a first axially-extending portion of the stator windings and the rear housing portion defines a second circumferentially-extending channel which encloses a second axially-extending portion of the stator windings. Designs as disclosed herein provide effective cooling of an electrical machine while supporting packaging-efficient electrical machine designs.
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Harpenau Kevin Roy
Harris Richard Kenneth
Yockey Steven John
York Michael Timothy
Ford Motor Company
Jones Judson H.
Ramirez Nestor
Sparschu Mark S.
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