F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
137/34
F24F 7/06 (2006.01) F24F 11/04 (2006.01)
Patent
CA 1071059
Abstract of the Disclosure An air flow velocity controller in a variable air volume control system interlocks a room temperature signal from a thermostat with the velocity set point so that the velocity controller maintains a constantly regulated amount of air into a room in proportion to the room's thermostat demands and independent of variations in the static pressure in the duct. The controller includes a maximum lift cam and a movable spring fulcrum which are both mounted in a common cam housing to permit the maximum velocity setting to be adjusted for varying room requirements while main- taining a constant spring range regardless of the maximum velocity setting. The controller is constructed to provide auto- matic compensation for control offset produced by changes in the static air pressure in the duct. The controller includes the ability to control the air flow at a minimum velocity so that the air can be economically reheated or a minimum volume of air flow can be maintained for ventilation requirements.
277535
Ginn Leroy D.
Ginn Leroyce S.
Travaglio Dalny
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