Adjustable air volume regulator for heating

Details Adjustable air volume regulator for heating Adjustable air volume regulator for heating

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 11/047 (2006.01) F24F 13/10 (2006.01)

Patent

CA 2535628

An improved air volume regulator used in HVAC operating at a static pressure of 25 pa. (0.1"w.g.) having a pair of opposing gates facing into the airflow and a V shaped deflector positioned to form two constricting passageways. Air flowing through the passageway generates a light vacuum at its throat and combined with the static pressure differential across the gates urges them towards the deflector and constricts the airflow. A counterbalance spring cooperating with a concave cam and cam follower applies a resisting bias on gates such that the airflow in the regulator remains constant under varying inlet conditions. A variable spring rate mechanism permits the adjustment of the airflow rate over the full operating range using a single counterbalance spring. A cable driven "limited torque" flywheel controls the air volume regulator's propensity to pulsate under unstable inlet airflow conditions.

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