US396049A - Oil-burner - Google Patents

Description

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A. U. PAGE 8v J'. BRAGG. OIL BURNER. V No. 396,049. Patented Jan. 8.1889.

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(No Mouiel.) A.U. PAGE 8v J. BRAGG.

OIL BURNER.

10.396.049 Patented Jan. 8, 1889.

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AUGUSTUS U. PAGE AND JOHN BRAGO, OF CLEVELAND, OHIO.

@iL-BURNER.

SEECIFICATON forming part of Letters Patent No. 396,049, dated January 8, 1889.

Application tiled May 2, 1887. Serial No. 236,872. (No model.)

To all whom, it may concern:

Be it known that we, AUGUSTUS U. PAGE and JOHN BRAGG, of Cleveland, in the county of Cuyahoga and State of Ohio, citizens of the United States, and residents ot' said city, have invented certain new and useful linprovements in Oil-Burners; and we do hereby declare that the following is a full, clear, and exact description of said invention, such as will enable others, skilled in the art to which it pertains to make and use the same, reference being had to the annexed drawings.

Our invention relates to the class of oilburners adapted to burn hydrocarbon oils under steam-boilers and in furnaces; and it consists in the arrangement ot' parts and the combination ef the elements of combustion, as herein described, and spceiiically pointed out in the claims. v

'lhe object of the invention is to facilitate the use of crude petroleum-oil as a fuel by securin g more perfect combustion with economy of material, to avoid the danger of leakage or dripping of uncousumed oil from the burner, which is a common fault with oilburners of this class now in use, and to obtain a quieter and more cquable flame.

ln the drawings, Figure l is a central vertical sectional view of a burner embodying' our invention. Fig. 2 is a plan view of the top of the front portion or nozzle. Fig. 3 is an elevation of the nozzle, showingthe escape-vent. Fig. -l is a detached sectional view showing a modified form of construction of the internal parts of the burner. Fig. 5 shows the preferred method of attaching the burner under a steam-boiler, the burner and boiler being shown in elevation, and the brick-setting in section. Fig. 0 is a partial sectional view on the line .1: ,2' of Fig. 5, showing the preferred distribution of air passages beneath the boiler. Fig. 7 is a detached view, in elevation, of the burner and its attachments when arranged under a boiler, asin Fig. 5, and Fi 8 is a plan view of the burner and attachments shown in Fig. 7.

The burner consists, essentially, of a shell or case, A, preferably of cast metal, gradually tapering at about one-third its length from the front end to a diameter of about half that of the main body of the shell, thus formto the inner end of the nozzle c.

ing a nozzle, a, which at its distal end is flattened horizontally and somewhat fan-shaped, so that the outlet is in the form of a long narrow slot, I); and this opening, as seen in Fig. 3, is made somewhat narrower in the center than at the ends, and widens gradually and regularly from the center toward the ends, in order to prevent a too free escape direetly in front of the internal steam-jet and insure an even distribution of the combustible mixture of oil, steam, and air throughout the entire length of the escape-vent b. rlhe nozzle u. may, if preferred, be formed separately from the case A, and attached thereto by a screw-thread; but as there is no liability of the nozzle to burn away at the outlet and need replacing we prefer te castthe shell and nozzle in one piece. rlhe rear endA of the shell A is closed by a cap, 13, screwed on.

O is a pipe entering the shell A near the rear end and passing forward cent-rally in the shell A to near the point where the converging walls of the shell merge into the nozzle a, where the pipe O terminates in a free open end.

D is a pipe surrounding the pipe O and of about twice its diameter, ending a short distance back of the end of pipe O. Another pipe, E, enters the shell A near the rear end,

and terminates in a nozzle, c, parallel with thepipes O and D, but terminating some distance farther back in the shell. A smaller pipe, F, enters centrally along the pipe E and terminates in a reduced opening opposite and near The pipe O is connected with the Oilsupply. D and F are connected with a steam-superheater, and E, either immediately outside the shell or at any suitable distance, is freely open to the outer air. le prefer to take the air-supply from the space above the nozzle of the burner, or through a bend or coil carried through the fire-pit, thereby securing air already more or less heated.. any convenient point outside the shell with suitable valves.

The pipes O, D, E, and F may enter the shell A at the top or bottom, or on either side, as may be most convenient in any given location, or they may all enter the rear end of the shell through the' cap B. The parts of O, D,

All the pipes are provided at' and E contained wholly within the shell may be east in one piece, as shown in Fig. e.

In the operation ot the device oil admitted through the pipe C, and simultaneously superheated steam is admitted through the pipes D and F, that enterin through 'F havingthe greater velocity. The jet ot steam from the contracted end ot the pipe l?, passing through the nozzle e, draws in air through the pipe E, and the mingled steam and air 'pass forward around the pipe D to the nozzle A. The steam entering through D and passing around the pipe Cheats the oil in C near-l;7 to the Vaporizing-point, and takes up the oil as it escapes from pipe (l in this condition, turning the oil into a spray and mingling at the same time with the mixed steam and air which iill the shell from the nozzle e, thus i'orming a gaseous mixture permeated with the oil, which inixture oi air, steam, and oil passes into the nozzle u, from which it emerges through the ventl) in the form of a broad thin diverging sheet of gaseous spray,whieh, when ignited, burns steadilyand quietly, like a lai1ipiia1ne, without the cutting blast eii'ect ot a llame discharged in a columnar or tubu lar shape, or from a Circular opening, and much greater heating efl'eet is obtained from the expenditure ot' an equal amouiiit of oil. The proportion ot air introduced is regulated by the velocit)r olf the steam introduced through the pipe F, the greater velocity drawing in more air, and it is desirable to have the proliortion ot' air largel)v preponderate over that ot the steam, for which reason the steam-pipe F may be as small as one-quarter inch internal diameter, and still further reduced at the end, while the air-inlet pipe E may have a diameter of one inch or more.

2y using dry superheated steam, a much larger proportion oi air, a complete and perlt'eet mixture ot' the air, steam, and oil-both being heated before the mixture takes placewe obtain more perfect combustion and a more intense heat than has been hitherto accom plished, while the diffusion of the flame secures more complete utilization of the heat prod ueed.

lVhat we claim as our invention, and desire to secure by Letters Patent, is

l. In an oilburner, the combination of the following elements, to wit: a shell or case having a contracted nozzle, with a centrally compressed and lzitorally-expanded outlet, with an air-inlet pipe to said ease having an expanded chamber with contracted outlet, and inelosing within such chamber a steampipe, and an oil-inlet pipe to said case surrounded by a separate and independent stean1- pipe, substantially as described.

An oil-burner composed of a shell having a contracted nozzle, with centrally-compressed and narrow laterally-elongate opening, and containing an air-inlet pipe inelosing a steam-inlet pipe, and an oil-inlet pipo surroumled by a separate steam-inlet pipe, substantially as described..

AUGUSTUS U. PAGE. JOHN BRAGG. lllitnesses:

L. PrinN'rIss, E. (l. )L Tonen.

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