Fan Blade
AssigneeTrane International Inc.
InventorStephen Stewart Hancock
Life of this patent
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Abstract
A heating, ventilation, and/or air conditioning (HVAC) system includes an outdoor unit having an outdoor fan configured to generate an airflow. The outdoor fan includes a fan blade assembly having a plurality of fan blades. Each fan blades is formed from a constant and/or uniform thickness material and includes an upwardly curved leading edge that causes a lower surface of the fan blade to contact the air first as the fan blade assembly is rotated and causes air attachment to the lower surface such that an eddy of air is trapped, recirculated, and/or generally passed more slowly through a recirculation zone, defined generally as the angularly trailing space behind the upwardly curved leading edge and between the upwardly curved leading edge and the remainder of an upper surface.
Claims20
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a fan blade assembly, the fan blade assembly comprising:
- at least one fan blade comprising an upwardly curved leading portion.
A method of manufacturing a fan blade, comprising:
- providing a sheet of substantially constant thickness material;
- and
- stamping the sheet into a form comprising at least one of an upwardly curved leading portion.
A fan blade, comprising:
- a uniform thickness material;
- and
- a upwardly curved leading portion.
Dependencies are inferred from the claim text.