Axial flow fan
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United States of America Patent
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-
Sep 8, 1998
Grant Date -
N/A
app pub date -
Dec 6, 1995
filing date -
Dec 6, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An axial flow fan primarily for use in harsh and/or corrosive environments such as agricultural barns has a one-piece plastic moulded housing which defines an air flow passageway, and a direct drive fan assembly supported in the air flow passageway by a novel motor mount. The mount includes at least three radially disposed support arms of equal length which maintain the fan assembly in the center of the air flow opening despite distortions in the housing that might occur for example due to temperature changes. Each support arm is a thin and flat plate disposed edge on to the air flow so as to minimize resistance. The air flow opening is smoothly contoured to define a convergent conical inlet section and a divergent conical outlet section for improved efficiency of air flow.
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