US1439186A - Oil burner - Google Patents

Description

Patented Dec. 19, 192?.v

1,439,186 PATENT OFFICE.

CLYDE W. MUMMERY, OF DETROIT, MICHIGAN.

OIL BURNER.

Application filed November 23, 1921. Serial No. 517,229.

To all whom it may concern:

Be it known that I, CLYDE W. MUMMERY, a citizen o'f the United States, residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Oil Burners, of which the following is a specification.

This invention relates to oil burners of the wickless type, especially suitable for burning kerosene, and in which the combustible vapor is generated after starting, by means of heat communicated to the walls of a generating chamber or trough above which is a pair of inner and outer shells which are perforated to supply air to the mixture and the flame.

' The object of the present invention is to simplify and cheapen the structure of such a burner; improved meansifor supplymg airto the mixture, this air being heated to assist 1n vaporization. A further object is to provide improved means for supplying air to the flame at or about the point of combustion.

Further objects and advantages Wlll appear from the following description and the accompanying drawings in which F g. 1 s a vertical section of the burner. Fig. 2 1s a section on the line 2-2 of Fig. 1.

Referring specifically to the drawings, 6

indicates an oil supply pipe controlled bya suitable valve 7. This pipe discharges through an opening 8 into the base of the burner which consists of a trough 9 which in the formshown is annular, the trough being substantially V-shaped in cross section, and above th oil line the inner and outer walls or sides of the trough are provided with air holes 10 and 1 1. to admit a suitable amount of air into the trough above the oil therein.

Upon the top of this trough rests the burner body which consists principally of two concentric tubular shells, the inner one being indicated at 12 and the outer one at 13. These rest on opposite edges of the trough and form a mixing and combustion chamber therebetween. The inner shell 12 is closed at the top as indicated at 12, and

the mixing and combustion space 14, be

A further object is to provide' surrounded by a thin metal casing 17 which depends from the flaring lip or rim of the shell, and the casing 17 is open at the bottom so that air may enter within the same where it is heated before being supplied to the combustion space. Near its upper end the shell 13 has a row of relatively large holes 18, and also, near its extreme end or upper edge has a row of similar holes 19,

and air will flow through these holes to the flame at the top of the combustion space.

The pipe 6 is threaded into a hollow boss 20 and extending vertically through and across the chamber in this boss is an air pipe 21. This pipe is open at the bottom as indicated at 22 but is closed at the top by a cap 23. It projects upwardly into the space between the shell 13 and the casing 17 and is preferably located in contact with the former so that it will conduct heat therefrom. In the chamber of the boss 20 the pipe has a plurality of holes 24 located slightly above the oil line or level and arranged to discharge heated air into the boss. The outer wall of the trough 9 has a circular downwardly inclined flange 25 at its rim which assists in directing the air toward or into the holes 11.

In operation, the burner may be started with gasoline or alcohol by pouring a small amount into the trough and lighting the same, and the flame from the gasoline or alcohol will create heat enough to start the generation of the oil which is admitted into the trough from the pipe 6. As the burner becomes heated, the air in the pipe 21 will flow or be drawn through the holes 24 in said pipe into the chamber in the boss, and this air mixes with thevaporized oil, the point of vaporization being within the chamber of the boss 20. The air is drawn in by the suction of the flame between the burner shells 12 and 13, and the mixture, including unvaporized oil if any, flows through the hole 8 into' the trough where the vaporization. is completed and the vapor burns between the shells 1'2 and 13 and at the top thereof, additional air being supplied through the holes in the shells as well as through the large holes 18 and 19 at the top. Any air not necessary for immediate combustion will flow through the holes 19 around the outside of the flame.

A burner so constructed will generate and burn kerosene Without smoke or odor, producing a blue flame of high heating quality, without requiring the use of a wick.

The burner shells can be readily lifted oil the base trough to permit cleaning of the latter if and when necessary.

I claim:

1. A burner comprising a' lower trough, and spaced perforated shells standing thereon, an inlet oil chamber discharging into the trough, and means to supply heated air to said chamber.

2. A burner comprising a lower oil trough, spaced perforated shells standing thereon, a hollowinlet chamber discharging into the trough, and an air pipe standing beside one of the shells and having discharge opening into said chamber. I

3. A burner comprising a lower oil trough, spaced perforated shells standing thereon, a hollow inlet chamber discharging into the trough, and an air pipe standing beside one of the shells and having discharge openings into said chamber, the lower end of said pipe extending across said chamber and being provided with said openings therein.

4. A burner comprising a lower oil trough, a pair of spaced perforated shells standing thereon, an oil supply chamber opening into.

the trough, and an air pipe extending across said chamber and standing beside one of the shells, said pipe'being open at the bottom and closed at the top, and having holes opening into said chamber.

5. A burner comprising a lower generating trough, inner and outer spaced shells standing above said trough, said shells having a plurality of small holes through the same, the outer shell being flared at the top, said flared portion having a row of larger openings.

6. A burner comprising a generating trough, a pair of spaced perforated concentric shells standing above the same, the outer shell being flared at the top, and having a row of relatively large holes at the top of the space between the shells, and

having another row of relatively large holes near the outer edge of the flared part thereof.

In testimony whereof, I afiix my signature in presence of two witnesses.

CLYDE W. MUMMERY. Witnesses:

MYRTLE C. HENAGIN, LORE'I'IA MUMMERY.

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