AIR SUPPLY UNIT OF NATURAL VENTILATION SYSTEM IN LIVESTOCK BUILDING Russian patent published in 2009 - IPC F24F13/10 F24F7/00 

FIELD: agriculture.

SUBSTANCE: unit is designed for the natural ventilation system and can be used in livestock buildings. The unit comprises an air intake fitting set in the wall opening and connected to the air distribution channel inside the building; the air intake fitting is equipped by a control valve which is made as two flaps directed to the air intake fitting inlet and fixed at the shaft inside the air intake fitting by a hinge; the flaps are interconnected by a calibrated extension spring. Stoppers are rigidly fixed at the inner sides of the two air intake fitting walls; the clear section of the air intake fitting inlet is equal to the cross section of the air distribution channel inside the building and the air intake fitting casing is made as a convergent nozzle. The unit allows for the automation of the livestock building natural ventilation depending on the force of the outdoor wind.

EFFECT: simple design and high reliability.

3 cl, 2 dwg