US1502228A

US1502228A - Oil burner

Info

Publication number: US1502228A
Application number: US628107A
Authority: US
Inventors: Michael A Attallah
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-03-27
Filing date: 1923-03-27
Publication date: 1924-07-22
Anticipated expiration: 1941-07-22

Description

July 22', 1924. 1,502,228

M. A. ATTALLAH 0 IL BURNER Filed March 2'7, 192-3 III/1 115 111,111;

mam

Patented July 22, 1924.

UNlT-ED fiTATES MICHAEL A. ATTALLAH, or ronon'ro, on'raaio, CANADA.

OIL BURNER.

Application filed March 27, 1923-. Serial No. 628,107.

T all 2072-0922. it vim-y concern:

Be it known that l, Mrorrann A. ATTALLAH, of the city of Toronto, in the county of York, Province of Ontario, Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Oil Burners, of which the following is a specification.

" to burn liquid fuels and more particularly to devices capable of burning heavy fuel oils and my object is todevise a burner of this type which is specially adapted for use with household heating plants, which will be safe, economical and efficient.

I attain my objects by means of the con structions hereinafter described and illustrated in the accompanying drawings in which- Fig. l is a plan view of av burner constructed in accordance with my invention showing the same applied to the firepot of a furnace;

Fig. 2 a longitudinal section on a larger scale; and

Fig. 3 a front elevation of the burner showing its connections in diagrammatic form.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

Referring particularly to Fig. 3, 1 is an oil tank from which leads the oil supply pipe 2 which leads to a float feed chamber 3, this float feed being of the type commonly employed for carburettors for internal combustion engines 4 4 is a pipe leading from the carburettor to the fuelnozzle 5 of an atomizing fuel jet. 6 is the air nozzle of the fuel jet, the fuel jet being formed as an integral casting. The outlet of the fuel nozzle is formed by a nipple 7 which may be formed on a short tube 8 screwed into the casting of the fuel jet so that the nipple may be adjusted up and down relative to the air nozzle or turned. The nipple is laterally flattened so that the opening is a slit as shown particularly in Fig. 1. In practice it is preferable that this slit be parallel to the axis of the air nozzle, the oil thus issuing from the jet in a very thin stream which is readily picked up by the blast of air issuing from the air nozzle. With this arrangement I find that there is no oil drip down the outside of the fuel nozzle as any oil tending to trickle down ward is readily swept off the sides of the nipple by the force of the air current.

The air nozzle is connected with a pipe 9 which leads to a suitable source of supply of air under pressure,- preferably a tank 10 in which the pressure may be maintained by means of a pump 11, which is preferably driven by hydraulic or electric power. The air nozzle is threaded into the fuel jet so that it may be adj 'usted to and from the fuel nozzle 5, as shown in Fig. 2.

An automatic valve 12 is preferablyprovided in the pipe 9 as well as a manually operated valve 13 by means of which the air supply to the air nozzle may be regulated. The automatic valve is adapted to automatically close as soon as air ceases to flow through the pipe, and to remain closed until manually reset. The body of the automatic valve is provided with the inlet and

outlet openings

16 and 17. the latter being located below the inlet opening. To cut off the supply of air which normally passes through the outlet opening a valve disk 18 is provided. The stem 19 of this valve is axially movable in aplug 20, which is threaded in the valve body in 'alinement with the outlet opening and at the upper side of the inletv opening so that the valve will fall by means of gravity below the inlet opening and seat itself on the portion of the air supply pipe 9 which is threaded in the outlet opening. The plug 20 is provided with a plurality of holes 21 communicating with the interior of the valve body and the atmosphere. Assuming the valve to be manually raised and held in its open position above the inlet opening as the air pressure is turned on it is obvious that the latter will hold the valve in its open position but if for any reason the pressure of the air decreases sufliciently to allow the valve 18 to drop below the inlet opening the air will escape through the holes 21. This arrangement also visibly indicates by means. of the relative position of the end of the stem 19 projecting through the plug 20. whether the air is escaping or not. The reason for this construction is that if the air supply fails. the jet of fuel is cut off sufficiently long for the fire to be extinguished so that it will not relight when the air pressure comes on again, and if under these conditions the air supply to the fuel jet is renewed, the furnace is soon filled with unburned oil. However, if the air supply remains out oif after it has once failed, no

oil flows into the furnace until the fire is relit and the valve 12 re-opened. As the fuel nozzle is supplied by float feed, no oil will flow from it unless the air nozzle is in operation.

A very important feature of my invention is the combustion shell 14:. This may be formed of a metal casting or of any suitable refractory. In its simplest form, it is shaped as a cross with openings 15 opposite one another and in alinement with the axis of the air nozzle 6 and lateral openings 23 which are shown. directly opposite one another. The jet of air and fuel from the fuel jet passes through the shell and by injector action air is drawn in to mingle with it both through the lateral openings and the opening 15 nearest the fuel jet. The burningjet strikes a fire-brick wall 22, which protects the metal of the furnace and forms a heated radiant mass serving to heat by radiation the heat transferring surfaces of the heater.

i It will be understood that any suitable fluid, such as steam, may be substituted for the air for causing the atomizing of the fuel.

hat I claim is In oil burning apparatus the combina tion of an upwardly directed fuel nozzle having its sides flattened and formed with a narrow slit like aperture parallel to the sides: and an air nozzle substantially at.

right angles'to and directed across the fuel" nozzle, the said flattened sides of the fuel nozzle extending parallel to the axis of the air nozzle 'whereby Oll dripping down the sides of the fuel nozzle is swept off by the air current from the air nozzle.

Signed at Toronto, Canada, this 21 day of March, 1923.

MICHAEL A. ATTALLAH.