Post mix nozzle design
OwnerWilliam E. Dennisoninventor
Life of this patent
Estimating the term…
Abstract
A cutting nozzle assembly and associated method of making same includes a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged. A plurality of spaced fuel gas bores are arranged around the central bore, and preheat passages are arranged around both the central bore and the fuel gas bores. A retaining nut receives at least a portion of the nozzle therein, and the retaining nut includes a shroud extending axially outward from a discharge end of the nozzle. At least one of an inner surface of the shroud and the additional preheat passages are angled inwardly toward the longitudinal axis. The fuel gas bores and the preheat passages each have the same cross-sectional dimension, and twice the number of preheat passages as fuel gas bores are provided.
Claims21
A method of making a cutting nozzle assembly comprising:
- providing a nozzle;
- forming a central bore along a longitudinal axis of the nozzle;
- forming a plurality of spaced fuel gas bores arranged around the central bore;
- forming preheat passages arranged around both the central bore and the fuel gas bores;
- providing a retaining nut dimensioned for receipt over at least a portion of the nozzle, and including a shroud extending axially outward at one end of the retaining nut, the shroud extending axially outward from discharge ends of the nozzle and the preheat passages when the retaining nut is assembled with the nozzle;
- and
- angling an inner surface of the shroud inwardly toward the longitudinal axis.
A cutting nozzle assembly comprising:
- a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged at a discharge end, and a plurality of spaced fuel gas bores arranged around the central bore, and additional preheat passages arranged around both the central bore and the fuel gas bores;
- a retaining nut receiving at least a portion of the nozzle therein, the retaining nut including a shroud extending axially outward at a first end of the retaining nut by an axial dimension so that the shroud extends axially outward from the discharge end of the nozzle an axially outward from terminal ends of the additional preheat passages when the retaining nut is assembled with the nozzle, the shroud having an inner surface angled toward the longitudinal axis.
A cutting nozzle assembly comprising:
- a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged at a discharge end, and a plurality of spaced fuel gas bores arranged around the central bore, and additional preheat passages arranged around both the central bore and the fuel gas bores;
- a retaining nut receiving at least a portion of the nozzle therein, the retaining nut including a shroud at a first end of the retaining nut, the shroud extending axially outward from the discharge end of the nozzle, wherein both an inner surface of the shroud and the additional preheat passages are angled inwardly toward the longitudinal axis, and the shroud has an inner surface angled up to about six degrees relative to the longitudinal axis.
Dependencies are inferred from the claim text.