Burner unit

Claim 1

A fuel burner assembly for the combustion of liquid and gaseous fuels comprising an elongated cylindrical wall defining an internal cylindrical burner chamber, an end plate mounted on said cylindrical wall having an inlet opening at one end for introducing fuel into said burner chamber and an exhaust port at the opposite end for exhausting the products of combustion, said cylindrical wall being positioned along a horizontal axis, oil nozzle means at said inlet opening coaxially positioned along said horizontal axis, said end plate formed with a plurality of gas jet openings equally spaced apart in a plane such that said gas jet openings are positioned parallel with respect to said horizontal axis, gas nozzles mounted in each of said jet openings, said cylindrical wall having a plurality of orifices equal in number to said gas jet openings and medially located between said inlet opening and said exhaust port for introducing combustion air into said burner chamber, said orifices positioned in a plane which is substantially perpendicular to said horizontal axis, means for supplying jets of air at each of said orifices such that said combustion air is within a range below and above the theoretical combustion air required for complete combustion of the fuel in said burner chamber, whereby a portion of said jets of air is circulated towards said inlet opening to mix with a portion of said fuel and thereafter flow along said cylindrical wall towards said exhaust port and the remainder of said jets of air is mixed with said fuel and is conveyed towards said exhaust port for combustion as it is discharged.