US1758414A - Tubular burner - Google Patents

Description

A TTORNE YS R; T H U RM TUBULAR BURNER original Filed not; 15, 1925 NN, I .24

RIIIARDTHURM, oF SAGINAW, MICHIGAN,

Patented 13, 19539 -ASSIG'NOR T0 BAKER PERKINS COMPANY,

INCORPORATED, OF SAGINAW, MICHIGAN, A CORPORATION OF NEW YORK TUBULAR BURNER Original application led October 15, 1925, Serial No. 62,511.

31, 1928. Serial No. 250,817.`

The invention relates to burners for illuminating gas, producer gas, oils and similar fuels; and it pertains particularly to burners of the longctubular type which are employed for burning mixtures of Water gas, vaporized gaseous fuels and air in atmospheres whichV are substantially free from oxygen, such, for example, as baking ovens.

When the ordinary long tubular type of burner is located so that the combustion at its outlet takes place in a more or less conned space in anatmosphere that is substantially free from or at least deficient in oxygen and raised to a comparativelyi high temperature, there is liability to objectionable and somewhat dangerous backfiring and ex` plosions.

The principal object of the present invention is to provide a burner so constructed as to prevent such backiiring and explosions; and to insure a continuous and substantially uniform combustion throughout the length of the burner. l

p With these and other objects'in View, the invention lcomprises thevnovel and improved features, constructions and'combination of parts hereinafter described and particularly pointed out in the claims, the advantages of which will be clearly understood and appreciated by those skilled in the art.

This application is a divisional applicationbased upon certain subject-matter contained in a prior application, Serial No. 62,511, filed VOctober 15, 1925, by Richard Thurm and Eugene Oscar Engels.

The invention will be clearlyCundrstood from the accompanying drawings'illustrating the invention. in its preferred forms and vthe following detailed description of the tion showing one means by which the discharge of fuel from the burner is controlled; Figures 6 and 7 are horizontal sectional views showing different modified forms of fuel discharge controlling means; and

Figures 8 and 9 are views in side elevation Divided andthis application iiled January showing still further modified formsof dis-u y charge controlling means.

In the illustrated embodiment of the invention,l the burner includes a suitable fuel chamber to which combustible fuel is suppliedfrom a suitable conduit, which preferably extends substantially throughout the length of the fuel chamber. supplied with combustible fuel from a suitable fuel main to which the fuel is supplied from a mixing device and which, in turn, has connection with sultable means for supplying the different element-s of which the fuel is composed. From the fuel chamber, the fuel is discharged and burned at the point of discharge.

In the accompanying drawings, the burner is designated by the reference character 10 and as shown in Figure 2, said burner includes a chamber which consists of atubular member 19 substantially circular in crosssect-ional form. This tubular member 19 is provided with an elongated slot 21, the length of which is determined by the length of the flame desired and which, in the present instance, is shown as extending throughout the major portion of the length of said tubular member.

llnthis type of burner, a conduit-20 is employed Aand this conduit extends throughout substantially the entire length of the chamber formed bythe tubular member 19, as indicated by dotted lines in Figure 1. This conduit 20 is'semi-circular in cross-section and as shown in Figure 2, is located in the lower 'portion of the tubular member 14 with its plane wall positioned upwardly. Thls construction provides a fuel chamber 25 in the tubular member 19. Suitable discharge openingssuch, for example, as the perforations 26 are provided in the straight wall'of the cons duit 20 and these dischargepopenings serve to permit the fuel to pass from the conduit 20 into the fuel chamber 25 in the tubular mem# ber 19. By this cLonstruction-,a uniform presvsure of fuel is maintained in thechamber 25.

Fuel is supplied to the conduit 20 by-means of a suitable pipe 11 controlled by a valve 13 and connected tota fuel main 12 for supplying combustiblefuel The fuel is supplied to the fuel main 1 2 from a suitable mixing device 14 to which the elements of the .fuel are -supplied separately in anys desired member 19 throughthe lelongated slot 21 and as the fuel issues therefrom, it is ignited or burned to provide the flame of the burner.

The tubular lmember 19 is provided with suitable means constructed 'to form a plurality through which the fuel v.passes in its of relatively long passageways charge 4 from c member 19. l

A suitable structure is positioned within the elongated slot 21 to secure this result. As shown in Figures 3, 4 and5, this structure comprises two relatively long plates of greatthe chamberl ofthe tubular er width-than thickness whichare adapted to 4be retained in the elongated slot 21y with their adjacent side faces in contact with each other( These two plates are designated by the refer-- ence characters 22 and 29 in the accompanying drawings, and as will be noted from Figure 3, the adjacent faces-,of these plates i are transversely grooved as indicated at 31 and 32 respectively.; It willbe noted thatthe transversely-'extending' grooves of each of the plates 22 and 29 are spaced wit re.-

- spec't to one another and further tha V'the grooves 31 inthe plate 22 are of a smaller p transverse dimension than the grooves 32 of ous mixture is discharged from the tubular member in a plurality of ndividualjets.

the plate 29, and consequently the intervening" spaces between the grooves 31 of the p1ate`22will be wider than that betweenthe grooves 32 of theplate 29.`l I Y Asheretofore stated, hese plates are posiexample, rivets 46.

The groovedjplates 22y and 29-when thus secured together, and secured within the slot 21 n of the tubular member 19, provide a series'of channels or passages through which the gase- Thechanneled structure is positioned in the elongated slot 121 and ,is retainedin position therein bythe side edges of the slot whichare caused -to engage the outer faces i, of the channeled structure and clamp the disversely of the tubular member 19, which bolts are provided with nuts 28, which, when tightened on their respective bolts, cause a contraction of the tubular member 19 and thus results in-a clamping of the channeled structure withinthe elongated slot 21.

Additional securing means for the channeled structure may be employed and as shown in Figure 3, this additional means may com rise suitablev clamping members such as 4 secured to the outer face ofthe tubular member 19 at points between its ends and end plates .48 which latter conform in shape to the tubular member and serve to prevent the escape of gas around the ends ofthe channeled structure.l As shown in Figure 3,"t his structure is sli htly shorter than the length of the .elongate slot to allow forexpansion of the same during operation of theburner. X

'In Figure 6 is 'shown a slightly modified form of channeled structure, 1n which there with its-grooved face` engaging. the smooth face of the plate 33. These plates 33 and 34 may be attached together land secured l within the elongated slot 21 and tubular member 19 in the same manner as described in the form of the invention 'shown in Figure 2.`

In Figure 7, a still further modified form.

of the invention is lshown and in this form a plate 40 is rovided in its opposite sides with a plurality of transversely-extending grooves, the' grooves of one side being offset or staggered with respect' to those of the other si e. forming the channeled structure, this plate 40 is secured between two ,plates 37 and 38, each having a smooth face engaging the .plate 40,' this plate together i with the grooves `of the plate 40 forming a plurality offchannels. rllhis entire structure is secured in the elon ated slot 21 of the tubular member A19 in t e same manner as in n the other forms of the invention. ,This type tioned with their grooved faces adjacent and,

the plates may be retained in this position by v a plurality of fastening meanSQSucha'S, for'.

In the further modied form of the in-- vention shown in Figure 8, a plate 41 is provided with a plurality of diagonally-extending grooves 42. In the preferred construction, this plate is assembled` with a second plateof corresponding shape and-size hav- "z ing a smooth face, the smooth face of the second plate being placed in'contactwith the grooved face of the 'plate 41. These vtwo plates are inserted in the slot 21 of the tubular of channels through which thegaseous mix- -member 19'and-are secured in position therey l A in. The grooves 42 thus provide a plurality same `w1th1n the slot. This result is obi n I tainedby means -ofbolts extending trans- Figure 9 shows a form of the invention similar to that shown in Figure 8. In the form of the invention shown in Figure 9, the

plate 43 is provided with two sets of diagonal- It is to be understood that a plurality of I these burners are employed in a baking oven, and as shown in Figure 1, the burners are supported at their ends in the walls 15 and 16 and between their ends, the burners maybe supported by suitable supportssuch as N17 The invention is not limited to the particular construction and arrangement of parts of the illustrated embodiments of the invention, but may be embodied in other forms within the scope of the claims. y

Having. explained the nature and object of the invention and having specifically described the structure embodying the invention in its preferred form, what is claimed is: 1. A burner comprising a relatively long tubular member provided with a slot extend- `ing longitudinally thereof, and a plurality of relatively long narrow Walls placed face to face and extending along said slot, each of said walls having a series of spaced grooves extending transversely thereof to provide channels through which the fuel is discharged from the tubular member,

opposite the spaces betweenthe grooves of the other wall.

2. A burner comprising a relatively long tubular member provided with a slot extending longitudinally thereof, and a plurality of charged from the .tubular member, the

grooves in one wall being wider than the grooves in the other wall, and the grooves in each wall being opposite the spaces betwen the grooves in the other wall.

3. A burner comprising a relatively long tubular member provided with a slot extending longitudinally thereof, and a plurality of relatively long narrow walls placed face to face and extendingalong said slot, one of said walls having a series of grooves extending transversely thereof and the other wall having a substantially smooth surface opposite the grooves to 4provide channels throu h which thefuel is discharged from the-tu ular member. I

Signed atSaginaw, Michigan, this 25th day of January, 1928.

' RICHARD TM.

said grooves being .so arranged that the grooves of each wall are

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