Self contained compact burner

摘要

A low pressure burner capable of generating a relatively long narrow flame is disclosed. A rotationally symmetric chamber is open at each end. Air is forced through the chamber at low pressure, generally no greater than about 0.3 lbs. per square inch above ambient. An atomizer is located in the chamber and expels a combustible mixture out through the downstream end of the chamber. The mixture expelled by the atomizer of the present invention has a distribution which is not rotationally symmetric about the chamber axis. The atomizer utilizes low pressure air provided at no greater than about 4.5 lbs. per square inch above ambient. A flame throat is located at the downstream end of the chamber, and includes at least two axially spaced steps to induce and control eddy formation in the mixture. The nonsymmetric mixture distribution and the multistep chamber combine to provide a long, narrow, stable flame in the throat at relatively low inlet air pressures.