US 6,981,915 B2
Airflow volume control system
David Allen Moore, Tomball, Tex. (US); Abdlmonem H. Beitelmal, Los Altos, Calif. (US); and Cullen E. Bash, San Francisco, Calif. (US)
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US)
Filed on Mar. 15, 2004, as Appl. No. 10/799,730.
Prior Publication US 2005/0208888 A1, Sep. 22, 2005
Int. Cl. F24F 7/007 (2006.01)
U.S. Cl. 454—184 54 Claims
OG exemplary drawing
 
1. A control system for controlling airflow through a vent to cool heat generating components in a room comprising at least one of a raised floor and a lowered ceiling, the system comprising:
a vent assembly positioned in fluid communication with a plenum, said plenum being formed in a space created by the at least one of the raised floor and the lowered ceiling, said plenum comprising cooling airflow supplied from an air conditioning unit, said vent assembly comprising:
a frame having an opening to allow the cooling airflow to flow through the frame;
a movable damper for variably restricting the cooling airflow through the opening in the vent assembly;
a motor for controlling movement of the damper;
a sensor for determining to position of the damper; and
a controller for controlling the motor to vary the position of the damper to thereby vary the cooling airflow through the opening in the vent assembly.