Solid particle fuel burner
OwnerEdward Norbert Endebrockinventor
Life of this patent
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Abstract
A burner for solid particle fuels such as shavings or pellets. The invention includes a helical piston to deliver fuel particles up an inclined tube into a cup having an oxygen delivery tube for combustion. The helical piston is axially extendable and retractable to first advance material up the tube without rotation, and then retract with rotation so as to screw itself into the next charge of material to be advanced. Combustion heat may be used to drive a Stirling engine or other mechanism for converting heat into other useful energy or power, such as using the burner as a component of a combined heat and power (CHP) system.
Claims15
An apparatus for oxygen-enriched burning, comprising
- a combustion cup comprising
- a floor having a central fuel-admitting orifice,
- a perimeter wall consisting of at least one inward-sloping surface, and
- an oxygen delivery tube centrally located within said fuel-admitting orifice,
- a fuel feed tube having a lumen oriented at an inclined angle between 30° and 75° inclusive, said lumen communicating with said fuel-admitting orifice,
- a helical piston disposed within said lumen, said helical piston rotatably coupled to and slidably coupled to said fuel feed tube,
- a motor operably coupled to said helical piston for rotation thereof, and
- means for sliding said helical piston between a retracted position and an extended position.
Dependencies are inferred from the claim text.