Centrifugal blower unit
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United States of America Patent
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May 17, 2005
Grant Date -
Oct 9, 2003
app pub date -
Apr 7, 2003
filing date -
Apr 9, 2002
priority date (Note) -
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Abstract
In a centrifugal blower unit for an inside and outside air double-layer flow type vehicular air conditioner, a centrifugal fan includes a first fan and a second fan. The first fan and the second fan have plural first blades and second blades arranged about a rotation axis, respectively. A separation wall is provided between the first blades and the second blades. The separation wall restricts mixture of air blown by the first fan and air blown by the second fan. Also, it restricts the air blown by the first fan striking against an end of a divider, thereby suppressing noise due to turbulent air flow.
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