Enhancements to high efficiency ceiling fan
AssigneeUniversity of Central Florida
InventorsDanny S. Parker, Guan Hua Su, Bart D. Hibbs
Life of this patent
Estimating the term…
Abstract
Twisted ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 60″ and 64″ diameter fans, and have less blades (3 for example) than conventional flat type bladed fans having 4, 5 blades and have greater air flow and less power draw results than the conventional flat 54 inch fans. Any of the novel twisted blades of 54″, 60″ and 64″ can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional blades.
Claims36
A method of increasing air flow coverage under a ceiling fan, comprising the steps of:
- providing at least two twisted ceiling fan blades attached to a ceiling fan motor, each of the fan blades being substantially planar having a twist running from a root end to a tip end, with the root end having a substantially greater width span than the tip end;
- and
- running the blades to cover an area of greater than approximately 2290 square inches under the ceiling fan to increase air flow coverage under the ceiling fan to be at least approximately 23% greater as compared to using approximately 52 inch diameter blades.
A method of enhancing air flow in ceiling fans, comprising the steps of:
- rotating fan blades attached to a ceiling at a speed of up to approximately 75 rpm;
- and
- drawing power supply of up to approximately 17 Watts, wherein the method generates downward air flows greater than similar flat bladed fans.
A method of operating an overhead ceiling fan, comprising the steps of:
- rotating fan blades attached to a ceiling fan motor at a speed of up to approximately 86 rpm;
- and
- drawing a power supply from the motor of up to approximately 14.5 Watts;
- and
- generating a downward flow of up to approximately 2500 CFM beneath the blades.
A method of operating an overhead ceiling fan, comprising the steps of:
- rotating fan blades attached to a ceiling fan motor at a speed of up to approximately 242 rpm;
- and
- drawing a power supply from the motor of up to approximately 102 Watts;
- and
- generating a downward flow of up to approximately 5700 CFM beneath the blades.
A method of increasing air flow coverage under a ceiling fan, comprising the steps of:
- providing at least two twisted ceiling fan blades attached to a ceiling fan motor, each of the blades having a substantially planar configuration between a root end and a tip end, with the root end having a greater degree of twist than the tip end, and a substantially greater span width than the span width of the tip end;
- and running the blades to cover an area of greater than approximately 2290 square inches under the ceiling fan to increase air flow coverage to be at least approximately 40% greater than as compared to using approximately 52 inch diameter blades.
Dependencies are inferred from the claim text.