Methods for fan assemblies and fan wheel assemblies

摘要

Fan assemblies, and in particular fan wheels and stator assemblies for fan assemblies, are disclosed. In one embodiment, the fan wheel includes a wheel back having an outer surface forming one of a curved dome-shape and a truncated cone-shape. The fan wheel may also include a plurality of fan blades radially spaced about and mounted to the outer surface of the wheel back. In one embodiment, each of the fan blades is formed from a segment of an airfoil-shaped aluminum extrusion defining at least one internal cavity. The fan blade first ends can be provided with a compound cut profile with at least one curved cut such that the first end of the blade is mounted flush to the wheel back outer surface. The stator assembly can also be provided with a plurality of stator blades formed from airfoil-shaped aluminum extrusion segments and provided with compound cut profiles.

主权项

1. A method of producing a fan wheel for a fan assembly comprising:
(a) providing an aluminum base having an outer surface forming a truncated dome-shape; (b) providing an airfoil-shaped aluminum extrusion having at least one internal cavity; (c) cutting the aluminum extrusion into a plurality of fan blades; (d) defining a mounting orientation and position for each of the fan blades with respect to a projection contour on the base; (e) machine cutting a first end of each of the fan blades with a cutting head of a cutting machine to provide each fan blade with a compound cut profile that is curved in at least one direction and that is curved in at least one other direction to match the projection contour; and (f) flush mounting each of the fan blades to the base in the defined mounting orientation and position.