US1790970A - Burner nozzle - Google Patents

Description

Feb. 3, 1931. w. M K. BRAYBROOKS 1,790,970

BURNER NOZZLE Filed Nov. 30, 192.8

gwomatoz Patented Feb. 3, 1931 UNITED STATES PATENT OFFICE WILLIAM LICK. BRAYIBBOOKS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'I'O GULF OIL BURNER COMPANY, 01 PITTSBURGH, PENNSYLVANIA, A CORPORATION 01 PENN SYLYANIA BURNER NOZZLE Application filed November so, 1928. Serial No. 322,842.

This invention relates to burner nozzles; and particularly to nozzles for burning fuel in a gaseous state or for liquid or solid fuels which are of very finely divided particles and accompanied by gas; and it comprises a burner nozzle having a main counterbored' body portion and a discharge portion bored with constantly increasing diameter and terminating in a sharp edge, a deflector plate' 10 located in the counterbored portion in line of delivery of the fuel to be burned, such deflector plate formed of a flat disc of metal of the same diameter as the counterbore and having a plurality of deflecting vanes ex-* quickly assembled and. disassembled, which is adapted for positive pressure blowers discharging oil and air, which will give even distribution of oil and air mixed with relatively small quantities of oil which will give .a wide spray, and which will thoroughly atomize the oil and discharge it in a definite form maintained some distance from the end of the nozzle.

In the accompanying drawings I have shown one form of a specfic embodiment of my invention.

Figure 1 1s a longitudinal section through the burner nozzle;

Figure 2 is a vertical section along line having a smooth tapered bore 2 leading 'the sharp ed b0 y 1s counterbore at 4 to leave a shoulder or seat d orifice 3. The nozzle 5 against which the deflector 6 (or distribu- I tor) is positioned. Deflector 6 consists of a sheetnietal disc having struck therefrom a inal plane, while part of the metal is raised up into deflector vanes by V-shaped cuts. The vanes are sections of metalone leg of whichextends out radially from apoint near the center of the deflector plate and the other leg back from the radial cut in a direction parall'el to the periphery. The deflector has an outside diameter corresponding to the counterbore 4 of the nozzle and is retained in position by a friction sleeve or col lar 8 having a similar outside diameter. The sleeve 8, which may be solid or split as shown in Fig. 3, is provided withopposite holes 9 for insertion of a tool to remove it when the device is to be disassembled. The angle of direction of the deflector vanes 7 is such that the air and oil spray is given a whirling motion after it passes through the deflector.

While the burner can be used for different mixtures including oil and steam and exceed- Ingly finely powdered coal, it is particularly usefulinconnectionwithhouseholdoilburners using an oil and air mixture. As the oil and air mixture is forced through the nozzle' the mixture is held against the tapered wall of the nozzle by the deflector and a'wide spray is discharged. This results in imparting to the air and oil a very good mixture and because of the superior mixing imparted by the whirling deflectors excellent distribution of the mixture from the orifice of the nozzle is effected with relatively small quantities of oil. The combination of whirling motion together with discharge from the sharp edged orifice of the nozzle results in a shearing action on the oil and air-and gives thorough atomization. The nozzle is particularly adapted for use wliere a positive pressure blower discharges oil and air together through the nozzle. In such use and because some little distance from the nozzle making it possible to assure more positive ignition and allowing latitude in the location of the ignition means, 5 The device is exceedingly simple in construction, no moving parts being required and it is exceptionally inexpensive in manufacture. What I claim is: o 1. A burner nozzle provided with a discharge portion having a tapered bore terminating in a sharp edge, a body portion counterbored to leave a shoulder at the dischargeportion, a separable disc abutting the shoul der and having its face provided with a plurality of vanes extending into the discharge end, and a retaining sleeve in the counterbored portion with its end resting against the said plate to hold it against said shoulder. 2. A burner nozzle provided with a body portion and a discharge portion, the discharge portion having a tapered bore and the body portion being counterbored to leave a seat adjacent the discharge portion, a separable sheet metal disc having a rim with an outside diameter corresponding to the said counterbore and provided on its face with a plurality of outwardly struck curved vanes projecting into the discharge portion, and a retaming sleeve in the counterbore of the body portion having its edge adjacent the rim of the deflector.

In testimony whereof, I have hereunto afiixed my signature. WILLIAM MoK. BRAYBROOKS.

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