US1631771A - Oil burner - Google Patents

Description

A. SHEATH ER OIL BURNER June 7, 1927.

Filed. Oct. 18, 1921- INVENTOR WM Patented June 7, 1927.

ALBERT snEAmnER, OF ELIZABETH,NEW JERSEY;

i orL BURNER.

Application filed October 18, 1921. Serial No. 568, 161;

This invention relates to an improved oil burner adapted for use 111 furnaces and the like, which atomlzes oil thoroughly so that it is broken up into very small particles with a minimum amount of steam or air used as an atomizing agent.

The invention is designed to provide a burner of this kind in which the flame is so spread that there is no localizing on the surface to be heated. In other words, the flame is distributed so that no part will be subjected to excessive heat, which local excessive heating, when it occurs, is damaging to such elements as the tub-es of watertube boilers.

The burner provides a flame which is of a general fan-tail effect which allows a perfect mixture with the air in all parts of the furnace, thereby providing a resemblanceto a furnace fire made from coal.

This invention is designed to provide a burner having a head which is preferably made in one piece, being cast witha core so as to provide a device with substantially face and having in this front face slots which are usually milled through to communicate with a chamber inside the head so as to form arcuate lips between the slots, these arcu- 30 ate lips on the rounded front face providing a fan-shaped flame. More than one slot is usually required, but it will be evident that if it is found in particular cases that only one slot is required, then only one slot would be provided.

The invention is illustrated in the accompanying drawing, in which Figure l is a side view of a burner of the improved type,

partiy broken away to show the interior thereof. Figure 2 is a front view of the nozzle of the burner. Figure 3 is a section on line 33 in Figure 1, and'Figuret is a section on line i-4l in Figure 2.

The burner may be of any desired size and is preferably made with the passage therethrough, the casing being enlarged on the rear end, as at 12, to form a mixing chamber 13. The mixing chamber 13 has one inlet opening which receives a pipe l l which supplies an atomizing agent, such as air or steam under pressure, this pipe having its inlet usually in line with the passage 10, and a pipe 15 is connected to the nozzle, the pipe 15 being adapted to convey, from a suitable source of supply, the fuel oil.

The pipe 15 extends within the chamber thick walls, the head having a rounded front 12 to approximately theaxial' center thereof so that the outlet end 16 of the oil supply pipe is in the center of the stream of the atomizing agent and the oil is thus atomized at the centerof the flow of steam, and in this atomized form is then carried through the straight passage '10 to the head 17 which is provided with the chamber 18-; The front end of the head 17 is provided with slots through which the atomizedffuel oil is passed, these slots,-such as'at 19, being approximately parallel with the axis of the nozzle, and for clearness of description these will be termed as horizontal. The front face of the head 17 being rounded and these slot/s being cut straight across at their inner ends, they provide arc-shaped lips between which the atomized fuel emerges,

' I-prefer to also provide a lower slot 20 which is inclined, as will be seen from F igures l and 2, so that it points upward and forces a stream of atomized fuel into the stream or streams emerging from the slot or slots 19, which further divides the small particles of oil; in other words, still further a-tomizes the oil in the emerging stream and forms a fan-tail flame. This divergent or obliquely inclined stream emerging from the slit 20 gives a'slight arch to the flame and prevents any tendency toward excessive downward movement of the flame,thus acting to prevent burning out of grates and the like when it is used over them,

I prefer to make the chamber 18 of the same size throughout, and the slots 19 and 20 extending across the face or front end ofthe nozzle insure a minimum amount of fuel passing out through the extreme ends 21 of these slots, thus avoiding any impinging of fuel on the side Walls of the furnace.

The burner is easily handled, it being, of course, understood that the pipes 1-1 and 15 are provided with suitable'valves for the regulation of the amount of material supplied through these pipes,-and it will be furtherseen that by turning on the atomizing agent, steam or air, first, and then slowly feeding fuel oil through the pipe 15 until ignition takes place, any waste of fuel is eliminated and there is no possibility of explosions taking place in starting.

v It will be evidentthat minor changes can be made in the form of the parts without departing from the scope of the invention.

I claim: A burner comprising a one-piece casing enlarged a t one 61 1a 'to 'form'e mikiiighhaln,

her with'aiiehd inlet; and a sideinle't mid enlarged at the other end to form a head With a'curved rent and slits; in theifr'ont; the upper slit bemg parallel'with the axle stream; emergi g therefrom mixes With and -a'1'che's' theflime of the bu'rn elfl In testimony that l'claim thevforegoing, 10 Q I have-fheretoleset. my hand, this v of October, 1921.

ALBERT SHEATHER,

17th day

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