FAN BLADES
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 17, 2010
app pub date -
Dec 10, 2009
filing date -
Nov 28, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A blade for an axial fan, including at least a front edge portion, a back edge portion, and multiple pressure balance holes. The front edge portion operates to blow air from the outside of the blade, the back edge portion operates to blow air to the outside of the blade, and the pressure balance hole is disposed on the back edge portion. The pressure balance holes are adapted to balance pressure and reduce pressure difference between the front side and the back side of the blade, eliminating backflow phenomenon caused by separation of boundary layer airflow at the back edge portion on a windward side of the blade and thus reducing power consumption and noise, and preventing dust from settling on the back edge portion on the windward side of the blade.
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