Cooling axial flow fan with reduced noise levels caused by swept laminar and/or asymmetrically staggered blades
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United States of America Patent
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Oct 5, 1999
Grant Date -
N/A
app pub date -
Nov 22, 1995
filing date -
Nov 22, 1995
priority date (Note) -
Expired
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Abstract
An axial fan for a cooling blower of a vehicle engine has fins with leading and trailing edges, and aeroacoustic optimization is provided by each of the leading edges and trailing edges having a strong forward sweep followed by a strong backward sweep in the manner of a bird's wing or by a straight forward sweeps followed by a strong backward sweep.
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