Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-09-14
1991-06-04
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 63, 310258, 310263, H02K 906
Patent
active
050216961
ABSTRACT:
A centrifugal fan for ventilated rotating machinery is provided having tapered fan blades to reduce sound pressure levels generated by fan operation over a wide speed range. The tapering of the fan blades keeps the cross-sectional area of each flow channel substantially constant as the air flows radially through the fan, resulting in a less turbulent flow. Each fan blade may include a height profile having a tapered segment in which blade height decreases in proportion to increasing radial distance from the central axis of the fan.
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Ford Motor Company
Godwin Paul K.
Mollon Mark
Skudy R.
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