Fan discharge duct having a scroll section
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United States of America Patent
Stats
-
Jan 3, 2017
Grant Date -
Jan 17, 2013
app pub date -
Jul 12, 2012
filing date -
Jul 15, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fan assembly for generating an air flow within a room includes an impeller and a motor for driving the impeller to draw an air flow into the fan assembly, and a casing having an interior passage with a scroll section having a cross-sectional area that decreases from a scroll inlet section to a scroll outlet section. The scroll inlet section has an inlet port for receiving the air flow and the scroll outlet section has an outlet port for returning a first portion of the air flow to the scroll inlet section. The scroll section includes an air outlet for emitting a second portion of the air flow from the casing. The casing defines a bore through which air from outside the fan assembly is drawn by the air emitted from the air outlet.
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