PLENUM FILTRATION-VENTILATION DEVICE

摘要

FIELD: mechanics, heating. ^ SUBSTANCE: device incorporates the casing with the lower and upper walls, the casing inside accommodates the frame made up of a plate inclined relative to the casing lower wall, a shield and air passage holes. ^ EFFECT: larger active surface for air passage, reduced air drag at preset casing sizes and device and filtration material longer life. ^ 6 cl, 4 dwg