US2139974A - Oil burner - Google Patents

Description

H. c. l TucKER l OIL BURNER Dec. '13, 1938.

Filed March 27, V193'?v 11n/ENTER TUCKER. .xk A @wf HTTHNE'T Patented Dec. 13, 1938 UNITED STATES PATENT OFFiCE Application March 27,

1 Claim.

This invention relates to improvements in oil burners and has particular reference to an oil burner for use in locomotive boilers or other steam generating plants.

The principal object of this invention is to produce a burner which is simple in construction and economical to manufacture.

A further object is to produce a device of this character wherein the oil being employed will be heated previous to combustion, at the same time, employing the Vaporizing steam as the heating medium. f

A further object is to produce a device of this character which may be quickly installed and which will operate eiciently under various load conditions, burning a small amount of oil or a large amount of oil with equal facility.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig, 1 is a side elevation of my burner;

Fig. 2 is a vertical cross section of Fig. 1;

Fig. 3 is a top plan view of Fig. 1; and

Fig. 4 is a cross sectional View taken on the line liof Fig. 3.

In steam generating plants it is common to employ a heavy oil, which oil in order to burn must be heated to almost the ignition point and then must be vaporized in order to produce a clean re. It is true that this type of oil after once ignited will burn, but unless the proper conditions exist, a great dea-l of smoke will occur, which smoke impairs the efciency of the boiler, and at thc same time the oil does not give off its normal thermal units.

Applicant has, therefore, devised a burner wherein this heavy oil passes through a circuitous channel and is heated for a considerable period as it passes through this channel and is then discharged onto a lm of rapidly moving steam Which acts as a vaporizer for the oil whose viscosity has been reduced and has reached a point where it may be readily ignited.

In the accompanying drawing wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates the casting of my burner as a Whole, having an oil inlet 6 and a steam inlet 'I. The throat of the burner is shown at 8. At 9 I have shown a channel, which channel returns at Il so as to form a space in which steam channels l2 and I3 are formed, the channel I2 connecting with the steam inlet l, and the channel I3 connecting with a channel I4. The channel II connects with a channel IB. Both the channels I4 and I6 dis- 1937, Serial No, 133,408

charge into the throat 8. The partition I 'I, dividing the channels Ill and I6, has a downwardly curved end I8, the purpose of which will be later seen.

The result of this construction is that when it is desired to re a boiler and assuming that my device has been connected to the oil and steam line, oil is admitted through the inlet 6, which oil will ilow through the channel 9, channel Il, and channel I6. At the same time, steam will enter through the steam inlet 'I and iiow through the channels l2, I3, and I. As these channels are separated by relatively thin walls, it will be apparent that the steam will give ofi" to the oil heat, which heat will be ample to raise its point of combustion from a comparatively low level to a comparatively high level. As the steam is under considerable pressure when it strikes the downwardly curved end I8 of the partition I1,v the same will be restricted and will issue along the ledge i9 as a thin film of steam at a high velocity, and onto this carrier of steam will flow the oil which will now be broken up to such a degree that it will readily ignite.

It will be readily understood that by increasing the amount of oil, it is possible to increase the heating capacity of the burner so as to accommodate for Various loads, which steam boilers are called upon to meet.

Also, it will be apparent that the heated oil sprayed into the furnace will readily volatilize and burn in a clean manner, thus raising the eiii'ciency of the boiler due to the lack of carbon deposit, and the eiciency of the oil consumed by its complete burning.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described my invention, I claim:-

In an oil burner, a casting', a circuitous passage formed through said casting, means for delivering oil to said passage, a second circuitous passage formed through said casting and interspacing said iirst-mentioned passage, whereby steam passing into said second-mentioned passage will heat the oil in said iirst-mentioned passage, and a common discharge throat for both of said passages, the discharge opening from said oil passage into said throat aring outwardly, and the discharge opening from the steam passage being constricted, said throat being located beneath a portion of said circuitouspassage and to the rear of the discharge end of said casting.

HOOPER C. TUCKER.

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