INFLUX-AND-EXTRACT LANTERN OF A NATURAL VENTILATION SYSTEM Russian patent published in 2007 - IPC F24F7/02 

FIELD: the invention is designed for ventilation of cattle breeding buildings and may be used in agriculture.

SUBSTANCE: the influx-and-extract lantern of the natural ventilation system of the cattle breeding building has a chink aperture in the roof with wind-proof shields connected with a regulating drive. On the longitudinal axle of the chink aperture there is a vertically installed separating shield one part of which is located in the upper zone of the building and another part is located above the edges of a ridged chink in outdoors atmosphere. The upper edge of the separating shield on hinges is connected with the wind-proof shields that in low position get in touch with the edges of the ridged chink.

EFFECT: increases effectiveness of a natural ventilation system.

1 dwg