STATIC AIR MIXING APPARATUS

摘要

An improved static air mixing apparatus (30) is disclosed which includes an inner enclosure (34) at least partially traversing a duct (31), an outer enclosure (36) surrounding the inner enclosure (34), a first plurality of radial vanes (38) extending outwardly from a center of the inner enclosure (34) to adjacent the inner enclosure (34), a second plurality of radial vanes (40) extending from between the inner and outer enclosures (34, 36), and a transition member (42) forming a divergent retention region downstream of the enclosures (34, 36) for prolonging mixing of different temperature airstreams as they pass through the air mixing apparatus (30). Further improvements are derived from an optimized depth ratio between the depth of the enclosures to the minimum diameter of the outer enclosure of between .37 and .40 and core ratio between the core area defined by the inner enclosure (34) to the outer enclosure (36) area including the core area of between about .60 to about .65.