VENTILATION SYSTEM OF WORKING AREA Russian patent published in 2010 - IPC F24F7/04 F24F13/10 

FIELD: heating.

SUBSTANCE: system includes exhaust pipe 1, supply air duct the ends of which are enveloped with rigid branch pipes 8 and made from synthetic film material, with outlet holes 12 and 11 in lower and side parts, air deflectors 13 located under the holes of supply air duct, valve 4 and 9 of exhaust pipe and supply air duct. Air entering rigid connection pipes 8 of supply air duct is supplied through sleeves 7 to film air duct. In case of cold air penetration and ice formation on film air duct, its sagging appears on springs 16, air deflectors 13 cover holes 12 and supply of ambient air decreases. Ice formation melts and film air duct is raised with springs to previous height.

EFFECT: automatic indoor control of air flow and improving indoor microclimate.

2 cl, 1 dwg