Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1999-03-04
2000-08-22
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 60R, 310 58, H02K 919, H02K 132
Patent
active
061077097
ABSTRACT:
A variable speed rotary electric machine comprises a stator having windings and a rotor having windings mounted within the stator for rotation about an axis; a cooling fluid inlet into a first end region of the rotor; at least one first fluid duct having an inlet orifice in the first end region of the rotor and an outlet orifice arranged to discharge fluid onto a first region of the stator windings; and at least one second fluid duct having an inlet orifice in an opposite end region of the rotor and an outlet orifice arranged to discharge fluid onto a second region of the stator windings. A flow path extends through the rotor from the first end region to the opposite end region, the rotor windings being in the flow path. The machine also comprises at least one third fluid duct having an inlet orifice in said opposite end region of the rotor and an outlet orifice. The at least one third duct has a greater flow capacity than the at least one second duct and the inlet orifice of the third duct is located closer to the axis of the rotor than the inlet orifice of the second duct.
REFERENCES:
patent: 4203044 (1980-05-01), Linscott, Jr.
patent: 5160864 (1992-11-01), Saito
patent: 5554898 (1996-09-01), Howard et al.
Jones Judson H.
Lucas Industries
Ramirez Nestor
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