Abstract An oxygen-fuel burner of the rocket burner type comprising a cylindrical combustion chamber having an open discharge end and a burner plate with separate oxygen and fuel ports constituting the opposite end of the chamber; the projected longitudinal axes of the oxygen ports extending in converging directions towards the longitudinal axis of the chamber but in off-set, non-intersecting relation thereto, so that points on the respective axes that most closely approach the chamber axis define a transversely positioned plane between the burner plate and the chamber exhaust; the projected longitudinal axes of the fuel ports being substantially parallel to the chamber axis for mixing of oxygen and fuel at and beyond the plane of closest approach, and means for adjusting the longitudinal position of the burner plate on the chamber axis and thereby locating the plane of closest approach in relation to the chamber exhaust for determining the pattern of the burner discharge flames.
The method of flame pattern control as specified in claim 1 wherein the flow of primary and secondary fuel constitutes a plurality of streams in generally parallel relation to the axis.
Claim 2
Dependent Claim
39 words
The method of flame pattern control as specified in claim 1 wherein the location of the defined zone is variable with respect to the discharge end of the combustion chamber for changing the location of the oxygen-fuel envelope traverse.
Claim 3
Dependent Claim
51 words
The method of flame pattern control as specified in claim 3 wherein the defined zone is so located within the chamber that the divergent oxygen streams impinge on the chamber wall and the mixed oxygen and fuel gases are confined to axial flow for producing a long, needle-type secondary combustion flame.
Claim 4
Dependent Claim
47 words
The method of flame pattern control as specified in claim 3 wherein the defined zone is so located near the chamber discharge end, that the divergent oxygen streams with mixed secondary fuel expand laterally beyond the chamber for producing a spreading, comparatively short umbrella-type secondary combustion flame.