Pigsty roof mounted ventilating unit - has heat conductive walls and top mounted fans in shutter controlled ducting

摘要

The ventilation system is for pigsties etc, having an extra heat-conductive wall (3) with an air supply to the top of the sty etc. Top fans (9) extract air from the inside and discharge it to atmosphere. The extra wall can be of ribbed or notched plate, and there can be one or more shutters (4) for the inlet air above the sty, adjusted by a central spindle. The fans can be mounted in ductings (8), while insulating plates are mounted below the ducting and the part of the extra wall at this point.