VENTILATION PLANT Russian patent published in 2002 - IPC

FIELD: ventilation systems. SUBSTANCE: ventilation plant is arranged in duct of rectangular section with walls of different length; plant includes fan provided with intake manifold, impeller with drive and radial blades which are rotatable in plane of cross-section of duct; plant is also provided with exhaust manifold limited by deflector with two cylindrical surfaces located on different sides relative to impeller axis; they embrace its zone on side of blades and their generatrix is parallel to shorter sides of duct cross- section. Plant is additionally provided with transversal partition located at spaced relation behind impeller in way of incoming air flow adjoining walls of duct passing through longer sides of its cross-section in zone of impeller diameter; it is provided with projections whose profile is rounded-off in radius; these projections are located on free butts of partition; exhaust manifold is additionally provided with second dispensing hole and second dispensing passage, each of which is located symmetrically on either side of impeller. Cylindrical surfaces of deflector are made in form of separate plates whose generatrix is equal to length of shorter side of cross-section of duct with parallel buts; each butt is secured on wall of duct passing through shorter side of its cross-section at some distance from intake manifold. EFFECT: optimization of location of butts of cylindrical surfaces, sizes of duct and transversal partition. 2 cl, 1 dwg