Roof air outlet structure - has perforated plate forming horizontal partition in housing and tubular nozzle

摘要

The roof air outlet is for ventilation and air-conditioning systems, having a horizontal partition dividing the housing into top and bottom chambers, and an air inlet leading into the housing from the side, partly above and partly below the partition, and containing an adjustable shutter. A discharge nozzle is also connected to the housing. The partition is a perforated plate (18) and the nozzle (30) is tubular, and of circular cross-section, with its discharge end (32) curving outwards to end at an edge (34) bent backwards and upwards. The bottom chamber (22) contains one or more guide vanes (40), deflecting the air tangentially into the nozzle.