Patent ID: 6250560
Filing Date: 2001-06-26
Classification: F24F,G05D

Abstract:
A control assembly for control of the operation of an actuator for a movable damper assembly in a variable-air-volume diffuser comprising:at least one of a room air temperature sensor and a supply air discharge flow rate sensor; anda control circuit coupled to receive input signals from each of the sensors, said control circuit being formed for coupling to said actuator and responsive to the receipt of said input signals from the sensors to control movement of said actuator to thereby position said the damper assembly so as to control the volume of supply air discharged from said diffuser; andsaid control circuit further being responsive to input signals from the sensors to drive said room air temperature toward a target temperature by repetitively sensing a parameter with a sensor, waiting to sense a stable condition of said parameter, when said stable condition is sensed, adjusting the position of the damper assembly in a manner tending driving room air temperature toward the target temperature, and maintaining said damper in the adjusted position until a stable condition is again sensed by a sensor before again adjusting the position of said damper assembly.