Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Axially extending shroud ring or casing
Patent
1998-06-16
1999-09-28
Lopez, F. Daniel
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Axially extending shroud ring or casing
416223R, 416169A, 416192, 416234, 416237, B63H 116, B64C 1100, F01D 522
Patent
active
059576618
ABSTRACT:
A high efficiency axial flow fan includes a hub, fan blades and a circular band. The hub rotates about a rotational axis when torque is applied from a shaft rotatably driven by a power source. The circular band is concentric with the hub, connected to the tip of each blade, and is spaced radially outward from the hub. The blades are configured to produce an airflow when rotated about the rotational axis. Each blade has a chord length distribution, stagger angle and dihedral distribution which varies along the length of the blade. The dihedral distance of each blade varies as a function of blade radius from the rotational axis.
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Capdevila Hugo
Castillo Bonifacio M.
Hunt Alexander Graham
Barton Rhonda
Lopez F. Daniel
Siemens Canada Limited
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