AIRFLOW VOLUME CONTROL SYSTEM

摘要

A control system (502, 602) for controlling airflow through a vent assembly (118, 200, 200', 200'', 230, 250). The system (502, 602) includes a vent assembly (118, 200, 200', 200'', 230, 250) having a frame (202, 232, 252). The frame (202, 232, 252) includes an opening (204, 234, 260) to allow air to flow through the frame (202, 232, 252). The vent assembly (118, 200, 200', 200'', 230, 250) also includes a movable damper (206, 236, 256) for variably restricting the fluid flow through the opening (204, 234, 260) in the vent assembly (118, 200, 200', 200'', 230, 250), a motor (210, 238, 472) for controlling movement of the damper (206, 236, 256), and a sensor (214, 214', 214'', 214''') for determining the position of the damper (206, 236, 256). In addition, a controller (504, 606) is provided to control the motor (210, 238, 472) to vary the position of the damper (206, 236, 256) to thereby vary the airflow through the opening (204, 234, 260) in the vent assembly (118, 200, 200', 200'', 230, 250).