Axial-flow fan
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 9, 2002
Grant Date -
Mar 21, 2002
app pub date -
Jan 11, 2001
filing date -
Jul 27, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is an axial-flow fan including a hub coupled to a rotating shaft and integral with the rotating shaft, and blades arranged around the outer peripheral surface of the hub and integral with the hub, the axial-flow fan having design parameters given under the condition using an outer fan diameter of 110 mm.+-.10 mm and a number of the blades corresponding to five or more. A sweep angle, which is included in the design parameters, is calculated using particular calculation equations, to reduce noises resulting from a 'blade passing frequency' and a 'blade vortex interaction' generated during an air sucking operation.
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Cited Art Landscape
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