Annular venturi burner for stirling engine
AssigneeNew Power Concepts LLC
InventorsChristopher C. Langenfeld, Michael S. Place, Jeremy B. Lund, Prashant Bhat, Michael G. Norris, Andrew A. Schnellinger
Life of this patent
Estimating the term…
Abstract
An annular venturi burner assembly and Stirling engine. The annular venturi burner injects fuel into combustion air flowing axially through a port with an annular cross section. The fuel enters the annular cross-section from the outside diameter. The flow of air through the annular section creates suction that draws the fuel through the ports. A venturi bushing directs the flow of fuel to provide improved and more uniform mixing of fuel and air.
Claims10
A burner for heating an external combustion engine or machine with a heater head comprising:
- a blower providing air for facilitating ignition and combustion in the burner;
- a preheater defining an incoming air passage and an exhaust passage separated by an exhaust manifold and wall for heating the air from a hot exhaust expelled from the heater head;
- and
- a burner head for heating a working fluid of the engine, the burner head further comprising:
- a plurality of fuel ports for supplying a fuel;
- an ignitor to ignite the fuel and air, and
- a venturi for receiving the heated incoming air and drawing in the fuel from a fuel annulus and directing the fuel and air near the ignitor;
- a combustion chamber disposed linearly below the venturi to receive the fuel/air mixture from the venturi and for supporting a flame;
- and
- wherein the plurality of fuel ports supply the fuel to the fuel annulus, and wherein the fuel annulus is a gap between an outside diameter of a venturi bushing and an inner surface of the venturi, and directs the fuel along the inner surface of the venturi.
Dependencies are inferred from the claim text.