Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2011-03-01
2011-03-01
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S053000, C310S214000
Reexamination Certificate
active
07898128
ABSTRACT:
The invention aims at providing a forced cooling rotary electric machine capable of bringing temperature distribution close to a designed temperature distribution and avoiding becoming a larger size, and employs a wedge formed with ventilation grooves and a wedge not formed with the ventilation grooves to regulate the flow rates of cooling gas passing through air ducts, so that the cooling gas supplied to a part of a stator core, in which temperature is low, can be caused to flow positively to a part in which the temperature is high and the temperature distribution in the axial direction of the stator core can be uniformized. As a result, the temperature distribution in the axial direction of the stator core can be brought close to a designed temperature distribution, and a forced cooling rotary electric machine that need not be made larger in size with a margin can be obtained.
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Notification of Reasons for Rejection in Japanese Patent Application No. 2007-005779 drafted Nov. 13, 2008 (with English translation).
Notification of Reasons for Rejection in Japanese Patent Application No. 2007-005779 drafted Nov. 10, 2009 (with English translation).
Hattori Ken-ichi
Kakimoto Tadaaki
Saeki Mitsuru
Semba Akitomi
Sezaki Mitsunori
Brundidge & Stanger, P.C.
Desai Naishadh N
Hitachi , Ltd.
Leung Quyen
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