Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-01-30
1999-03-02
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310 42, 310258, 310 64, 363141, 363145, H02K 112, H02K 132
Patent
active
058775765
ABSTRACT:
A dynamoelectric machine having a stator housing or frame made by a lost foam process utilizing a unitary single-piece vaporizable pattern. The stator housing may be made from a molten metal such as cast iron or aluminum, and has an annular wall having integral outwardly extending longitudinal cooling fins, mounting foots pads and a conduit box support pad. The lost foam process enables the cooling fins to have a greater effective cooling fin height to housing diameter ratio and greater effective cooling fin height to housing annular wall thickness ratio than obtained with prior sand casting processes. The greater height fins provide increased strength and rigidity for the annular wall which can be made radially thinner than prior stator housing or frames of similar size. Substantial savings in material and labor are realized by the stator housing.
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General Electric Company
Ramirez Nestor
Traynham Wayne O.
Wallace, Jr. Michael
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