AUTOMATIC VENTILATION VALVE Russian patent published in 2013 - IPC F24F13/00 

FIELD: ventilation.

SUBSTANCE: ventilation valve comprises a base with a central hole in it, on the inner end of the base there is a seat, where a plate is installed with the possibility of pressing, being hingedly fixed on the axis on a rotary double-arm lever connected to the base, at the same time the lever by its one end with a ball joint is hingedly connected with the plate. On the other end of the lever there is a cavity, in holes of upper and lower walls of which there is an adjustment screw interacting with a counterweight, at the same time the counterweight is installed on the lever as capable of displacement relative to the lever. The base is equipped with a flange of valve fixation, a fixator installed in the flange bracket, and the second fixator in the form of an eccentric installed on the axis arranged in holes of the specified bracket, and has a groove, in which the first fixator is installed. A spring is connected to the flange by one end, and its other end is connected to a flag of the second fixator, the lever is connected with the axis by means of the screw, and the screw is installed in the specified lever and rests with its end against the groove on the axis.

EFFECT: higher reliability of automatic valve actuation when relieving air through it from one room into another in one direction, higher sensitivity of a valve and accuracy of its setting.

3 cl, 10 dwg