ILLUMINATION-EXHAUST DEVICE FOR CATTLE-BREEDING BUILDINGS Russian patent published in 1997 - IPC

FIELD: agriculture. SUBSTANCE: device has protective skylight placed over the ridge of combined floor in the form of right triangular prism of wooden frame with side faces covered with transparent synthetic film from inside and outside, exhaust shaft. Exhaust shaft base is adjacent to zenith skylight face, in so doing inclined bars and ends of lower lengthwise bars and exhaust shaft base wall have holes arranged in the place of joining the shaft and skylight face. Though passages for air are formed by the holes in inter-film space of each sky-light slope. The holes interconnect the exhaust shaft and under-ridge space. Slots for flowing down condensed water from film surface are arranged on the lower bars on the side of internal film. The slots are arranged through regular steps. Exhaust shaft base is provided with internal folding-back sheet for regulating air flow through the skylight, and valve for direct communication of the under-ridge space and external air medium through the exhaust shaft. EFFECT: efficient lighting and exhaust. 2 cl, 6 dwg