Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-09-05
2006-09-05
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S052000
Reexamination Certificate
active
07102260
ABSTRACT:
A drive unit comprises an electric motor1, a drive unit casing2accommodating therein the electric motor, an inverter3that controls the electric motor, and a flow passage of a refrigerant that cools the inverter. The inverter is mounted on a heat sink53and mounted to the drive unit casing with a space R defined, and the space is communicated to the flow passage of the refrigerant. The heat sink comprises fins56, and the drive unit casing comprises fins22, the both fins being apart from each other. Thereby, both a side of the drive unit casing and a side of the heat sink are effectively cooled by heat exchange with a cooling refrigerant in wide areas. Also, the fins are apart from each other whereby direct heat conduction is avoided and efficient cooling is enabled with temperature gradient conformed to heat-resistant temperatures.
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Kutsuna Naruhiko
Takenaka Masayuki
Yamaguchi Kozo
Aisin Aw Co. Ltd.
Hanh Nguyen N.
Schuberg Darren
Sughrue & Mion, PLLC
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