Axial flow cooling fan with centripetally guiding stator vanes
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United States of America Patent
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Oct 17, 2017
Issued Date -
May 7, 2015
app pub date -
Apr 26, 2013
filing date -
Apr 26, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A generator system that includes an engine and an alternator which is driven by the engine to generate electrical power. A radiator is connected to the engine and an axial fan directs air toward the radiator to cool the radiator. A plurality of static vanes is located between the axial fan and the radiator. Each static vane includes an inner end and an outer end, the inner ends of the static vanes being joined together. The static vanes are curved in a plane orthogonal to the rotation axis in order to direct the air towards the axis, thereby counterbalancing the centrifugal forces. The static vanes may be twisted, the pitch angle increasing from 0 degree at hub to circa 45 degrees at tip. Additionally, each static vane is attached to the shroud via a third member that extends axially, thereby allowing an axial offset between shroud and static vanes.
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