Patent ID: 7547249

Claim:
An exhaust assembly comprising: a fan; an exhaust nozzle for the fan including: a pair of outer lateral walls and a pair of outer transverse walls extending from an inlet and forming an airflow path from the inlet to an outlet, the pair of outer lateral walls being spaced apart on opposite sides of a lateral axis extending in the direction between the pair of outer transverse walls; a pair of sloped inner lateral walls that angle outwards in the direction from the inlet towards the corresponding one of the outer lateral walls to form a pair of laterally extending outlets at the outlet on each side of the lateral axis, wherein the sloped inner lateral walls partition the airflow passage into at least two distinct passages each extending to the corresponding outlet in an outward direction from the lateral axis toward the corresponding one of the outer lateral walls; and a pair of spaced transverse walls intersecting the sloped inner lateral walls and forming a transverse outlet joining the pair of laterally extending outlets; and a windband having an entry side disposed with respect to the nozzle so as to receive air from the outlet and to entrain air through a space between the nozzle and the windband, the windband narrowing from the entry side in a downstream direction; wherein the walls of the nozzle are essentially planar and are joined at essentially perpendicular corners at the outlet of the nozzle such that the transverse outlet and the pair of laterally extending outlets form an H-shaped airflow outlet; and wherein the nozzle directs exhaust air upwardly and outwardly to an outer periphery of the nozzle so that entrainment with ambient air introduced at the entry side of the windband is facilitated.