Electrical machine with a cooling device
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United States of America Patent
Stats
-
Oct 22, 2002
Grant Date -
Jan 17, 2002
app pub date -
May 30, 2001
filing date -
May 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrical machine with a cooling system for the removal of waste heat includes a stator laminated core having a plurality of first sheet metal laminations stacked to form a first core part having a plurality of axial passages arranged on a reference circle which is concentric to a central axis, and a plurality of second sheet metal laminations stacked to form a second core part having a plurality of axial recesses which are also on the reference circle. The second core part abuts the first core part so that the passages are axially aligned with the recesses. Each passage receives a cooling duct which is connected to an adjacent cooling duct by a return element having radially extending legs received in respective axial recesses, the legs being connected by a peripherally extending center section. Where the stator laminated core is located centrally of a rotor hand has a concentric internal space, the center section of each return element is located in the internal space.
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