IMPROVED CONTROLLER OF AIR FLOW Russian patent published in 2014 - IPC F24F11/04 

FIELD: ventilation.

SUBSTANCE: in the invention an air flow controller is designed for passage in the shaft, comprising a louver plate made as capable of rotating to the set position, which is in the range from the closed position, in which the louver plate limits at least some path to the open position, in which air may freely flow in the path; and a connecting mechanism to rotate the louver plate, besides, the connecting mechanism includes a mechanism of a displacement stand, which is only put in action to rotate the louver plate in the open position, when the specified air flow is achieved, and supports the louver plate into its set position after the air flow is less than the specified air flow, at the same time the mechanism of the shifting stand is made as capable of movement with the connecting mechanism when not put in action.

EFFECT: invention provides for continuous position regulation of louver plates and uses a mechanism of a stand with preferably constant force for return movement of plates, which is relatively non-compressed in idle condition.

19 cl, 12 dwg