US1014496A - Burner. - Google Patents

Description

-H. LITTLETON.

v BURNER.

APPLICATION FILED AUG. 17. 1911.

Patented Jan.9,'1912.

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Zigi/*lzm H. LITTLETON.

BURNER.

APPLIoATIoN FILED mm1?. 1911.

1,014,496. 'Patented Jan. 9, 1912-.

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H. LITTLETON.

BURNER.

APPLIGATION FILED 11116.17. 1911.

1,014,496." 1 Patented 111119, 1912'.A

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VHENRY LITTLETON, OF MARICOPA, CALIFORNIA.

BURNER.

Specification of Letters Patent.

Application led August 17, 1911.

Patented Jan. 9, 1912.

Serial No. 644,517.

ATo all lwhom t may concern:

Be it known that I, HENRY LITTLETON, a citizen of the United States, residing at Maricopa, in the county of Kern, State of California, have invented certain new and useful Improvements in Burners; and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to spray burners and has for an object to provide an L-shaped mixing chamber which will promote a swirling motion of the oil and injected steam so that a thorough mixing of both is effected.

A further object of the invention is to provide a burner having a supplemental fuel outlet so arranged that flame from the burning of the escaping fuel envelops the burner and intensely heats the same.

With the above objects in view the invention consists in certain novel details of construction and combination of parts hereinafter fully described and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the appended claims.

In the accompanying drawings formingVM part of this specification Figure 1 is a side elevation of a burner embodying my improvements. Fig. 2 is an end elevation of the burner. Fig. 3 is a longitudinal sectional view of the burner. Fig. 4 is a detail perspective view of the steam pipe discharge end. Fig. 5 is a side elevation with parts in section of a modified form of the device.

Referring now to the drawings in which like characters of reference designate similar parts, 10 designates a T coupling, the opposite ends of the alined branches of which are closed by reducers 11 and 12,the reducer 11 having an axial nipple 13 of less bore than the-axial nipple 14 of the reducer 12. Threaded into the lateral branch of the Tpcoupling is an L coupling 15 which communicates with an oil supply pipe 16, the flow of oil through this pipe being controlled by a valve 17 of any preferred construction.

yThreaded in the nipple 13 of the reducer 11 is a jet pipe 18 which extends through and is of considerably greater length than the alined branches of the T coupling. The threaded end of the pipe extends outwardly beyond the nipple and is connected to any suitable steam supply, preferably the boiler under which the burner is desired to operate. The discharge end of the jet pipe is reduced and formed with a substantially square nozzle 19.

Threaded into the nipple 14 of the reduoer 12 is one end of a pipe 20, the opposite end of this pipe being threaded into one end of an L shaped coupling 21 the opposite end of which coupling is closed by a plug 22.

.This coupling forms a mixing chamber, and

it will be noted that the discharge end of the jet pipe is substantially flush with and extends axially into the lower end of the chamber. The jet. of steam from the jet pipe rmixes with the oil flowing through the pipe 20, and the mixture .being urged forward under the pressure of the injected steam, will impinge against the curved wall of the chamber which confronts the discharge end of the jet pipe and be deflected upwardly against the plug 22, and from thence will be deflected back again toward the jet pipe. In this manner a swirling movement of the mixture is promoted and a complete mixing of the steam with the oil effected.

Formed in the advance wall 'of the mixing chamber is a downwardly opening transverse slot 23, the inner end of this slot confronting and being disposed centrally relatively to the discharge end of the jet pipe as clearly shown in Fig. 3. Through this slot the mixture will be discharged and will be directed in a substantially Hat sheet underneath the boiler to which the burner is applied. Formed in the wall of the mixing chamber below the slot is a circular opening 24 of relatively small diameter. A portion of the mixture will escape downwardly through this opening, and the flame from the burning of the mixture will rise and envelop the entire mixing chamber causing the contents of the latter to be heated and the oil rendered more fluid so that the thorough mechanical mixing of the oil and steam is promoted.

It is to be understood that to assure best working of the burner, it should be mounted in upright position, that is, with the plug 22 disposed at the highest point in the device. When so mounted, the rising of the flame from the opening 24 will be assured at all times.

In order to drain the device a short length of pipe is threaded into one side of the T coupling, and to the outer end of this pipe is attached an `L coupling 26 to which is connected a pipe 27, the discharge of oil through this pipe'being controlled by a valve 28 of any preferred construction arranged in the bore of the pipe.

It will be here stated that the difference between the interior diameter of the pipe 2Oy and jet pipe 18 is preferably but one sixteenth of an inch, practice having demonstrated that this space effects the most effi cient'working of the device.

In Fig. 5 the parts of the burner are identical with the parts above described with the exception that interposed between the' pipe 20 and mixing chamber 2l is disposed a stand pipe 29 having an elbow connection 30 with the pipe 20 and an elbow connection 3l with a horizontally disposed stub pipe 32 which in turn is connected to the above described mixing chamber 2l. The utility of this intermediate stand pipe is .that when a small amount of oil is designed to be used, the steam being confined for a greater length of time in the mixing chamber or in other words in the stand pipe, will thoroughly mix with the small quantity of oil before the discharge of the oil and furthermore this stand pipe connection permits of the device being used in high furnaces where it is impossible toV use the preferred form above described.

What is claimed, is

1. A burner including a substantially L shaped mixing chamber having a closed upper end, an oil supply. pipe communicating with the open lower end of said chamber, a steam jet pipe within said oil pipe extending into said chamber, the outer wall of said chamber being formed with an elongated transverse slotV which confronts the discharge end of said jet pipe, and the lower wall of said chamber being formed with a downwardly opening orifice of relatively small diameter. l

2. A burner including an oil supply pipe, a steam jet pipe arranged within said oil pipe, an elbow carried by said oil pipe, a

stand pipe carriedby said elbow, an elbow carried at the upper end of said stand pipe, and a substantially L-shaped mixing chamber having a lower open end communicating with the last named elbow, and having a closed upper end, the outer wall of said chamber beingrformed with a transverse slot, and further being formed with an opening of substantially small diameter intermediate said slot and the lower open end of said chamber.

In testimony whereof, I aiiix my signa-V ture, in presence of two witnesses.

HENRY LITTLETON.

Witnesses:

I-I. S. NEsBIT, 'M. CAMPBELL.

Washington, D. C.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

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