Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-06-03
1999-08-17
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 54, 310 58, 310 59, 310 60, H02K 500
Patent
active
059398086
ABSTRACT:
An improved cast motor housing for medium to large motors is integrally formed with at least one conduit embedded in the housing for carrying a circulating heat removal fluid. The housing has a substantially cylindrical housing wall formed from a thermally conductive material. The fluid conduit is disposed within the housing wall intimate thermally-conductive contact with the wall material. The conduit may be formed of a sturdy, thermally conductive material. The conduit is arranged within the housing wall to extend along substantially the entire longitudinal and circumferential dimensions of the housing, and may be formed as a multi-turn helix. For larger motors, multiple conduits may be provided. The motor housing is formed by casting. A cylindrical casting core has a set of longitudinally-extending channels located at regular angular intervals along its circumference for supporting the conduit during the casting process. The resultant housing may be substituted for conventionally produced housings in the construction of motors. In operation, fluid is circulated through the motor housing to absorb heat, and then circulated through a heat exchanger to expel the heat.
REFERENCES:
patent: 5798587 (1998-08-01), Lee
Lam Thanh
Ramirez Nestor
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