High volume low speed fan

Details High volume low speed fan High volume low speed fan

2008-11-07

2011-11-29

Chu, Chris (Department: 2815)

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Plural diverse condition responsive

C416S005000, C416S032000, C416S036000, C416S162000, C416S155000, C310S092000

Reexamination Certificate

active

08066480

ABSTRACT:
A high volume low speed (HVLS) fan provides improved air circulation and thermal control in a building by incorporating composite fan blades pivotable to both positive and negative pitch angles. The blades are molded of polymer material over a metal tube core for strength and ease of attachment to the fan hub, and have a symmetrical airfoil shape to produce an efficient bi-directional conical airflow. The fan includes a control unit providing manual and automated intelligent control over blade angle and rotational speed, as well as startup with approximately zero blade angle for more economical power consumption and less motor wear. The fan structure and mounting system allows the fan to be installed at an optimal height inside a variety of buildings to provide increased efficiency of air destratification and air mixing. An array of multiple HVLS fans with alternating directions of airflow can further increase efficiency of air movement.

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AirMotion Sciences Inc.—AltAir HVLS Fan Brochure—copyright 2008.

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