ROOM VENTILATING DEVICE Russian patent published in 1994 - IPC

FIELD: ventilation equipment. SUBSTANCE: device comprises draw-out duct 2 with encompassing light-permeable covering. The novelty resides in the provision of light-reflecting screen 4 facing the draw-out duct 2, installed with a provision for turning around the axis of duct 2 and having the form of a parabola, truncated cone or pyramid. Duct 2 is made up of several parts interconnected so as to form angles along the duct. In room 1 with light-permeable covering 3 at temperature of 14-16 C the light-reflecting screen 4 is turned towards the sun to ensure reflection of the sun rays from screen 4 onto draw-out duct 2 and heating it intensively. The draught in duct 2 increases proportionally to its heating. The volume of sucked-in air also grows which promotes the heating of room 1 of the hothouse type. EFFECT: improved design. 8 cl, 10 dwg