PERFORATED AIR-RELEASE PANEL Russian patent published in 2015 - IPC F24F13/06 

FIELD: construction.

SUBSTANCE: invention relates primarily to the technique of ventilation and air conditioning. Character of the invention consists in the provision of perforated air-release panel, comprising a thin-walled perforated sheet perforated by the additional sheet, forming the double perforated panel, disposed at a distance, not exceeding the magnitude of 2 hydraulic diameters of the holes of the first sheet in the direction of the air flow. At that, the relative mutual location of centres of holes on both perforated sheets or their areas is subject to certain laws, and perforated sheets or their portions can be installed with possibility of relative displacement.

EFFECT: invention enabled to obtain the technical result, namely: possibility to change the initial air velocities (by magnitude and direction) in the air outlet openings of the panel, increase the level of turbulence and reduce the maximum speeds in the supply air flow, as well as to change the value of local resistance of the device or its local zones.