Pre-vaporizing liquid fuel burner

Details Pre-vaporizing liquid fuel burner Pre-vaporizing liquid fuel burner

1984-09-17

1986-08-19

Dority, Jr., Carroll B.

Combustion

Combustion products return structure

431347, F23J 502

Patent

active

046067205

ABSTRACT:
A pre-vaporizing liquid fuel burner with an eductor mounted to the end of a burner housing having an internal chamber. The eductor has air ducts disposed in a throat of the eductor through which combustion gas and air flow. A perforated flameholder is contiguous with the gas inlet of the eductor throat. The air flowing from the ducts creates a suction at the downstream side of the eductor throat which, in turn, draws the combustion gas from the center of the flame into the throat. The streams of air and gas flow from the eductor in interleaving streams to a mixing zone and then to the chamber downstream of the eductor. The interleaving streams are non-parallel to the burner axis but flow in an axisymmetric pattern to produce turbulent secondary eddies or flow patterns for complete mixing of air and combustion gas in a short distance. Liquid fuel is sprayed into the axisymmetric flow of the air-gas mixture where it evaporates. The combined air-gas-fuel vapor mixture is then fed to the flameholder and ignited.

REFERENCES:
patent: 3238994 (1966-03-01), Kirk
A Low Input Variable Firing Rate Oil-Fired Burner by Charles F. Mariano, Sep. 30, 1981, Prepared by Foster-Miller Associates, Inc., 350 2nd Ave., Waltham, MA 02154, Dept. of Energy Publication.

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