US1879916A - Gas burner - Google Patents

Description

Sept. 27,1932. w. a. BAGLEY 1,879,916

, ens BURNER Filed Dec. 3. 192a 2- Spats-Sheet 1 I N VEN TOR.

A 6. Ba

27, 9 w. a. BAGLEY I 1,879,916

GAS BURNER Filed Dec. 3. 192a -2 shuts-sheet '2 JNVENTOR. )7. 6. 5679/5? C M ATTORNEY.

Patented Sept. 27, 1932 i I UNITED STATES? WALTER o. BAGLEY, or renew; COLORADO (ms BURKEB I Application filed December 3, 1928. 'S'eriaI No. 323,424.

This invention relates to gas burners. It is an object of the invention to provide a gas burner adapted to emit a sheet of gaseous fuel at an angle and in intersecting relag t1on to a stream of air.

Another ob]ect is to provide ina burner of the above stated character, an unbroken sheet of fuel in intersecting relation to theair stream. A further object is to cause the IQ intersection to occur substantially at the point of ignition of the mixture in contradistinction to burners in which air and combustible gases are mixed before combustion.

Another object of the invention resides in I! the provision ofv a burner of the above type in which the sheet of gaseous fuel crosses the air stream at substantially right angles. Anotherobjectis to provide a burner in which two diiferent'kinds of fuel may be caused to intersect the air stream at or near the point of ignition either singly or simultaneously in accordance with varying conditions hereinafter to be described.

A further object is to provide adjustments for varying the thickness of the sheet of fuel gas whereby to regulate its quantity proportionate to that of the air stream, and still otherobjects reside in details of con-- struction' and noveland beneficial arrangements and combinations of parts as will be clearly brought out in the course of the following description with reference to the accompanying drawings.

In thedrawings, in which corresponding parts have'been similarly designated, I

Figure 1 represents a sectional elevation of a burner made in accordance with my invention, in its simplestform,

Figure 2, a similar view showing as a modification, .a means for supplying the air:

required in the operation ofthe burner, under artificially applied pressure,

Figure 3, a similar view, showing means for the selective supply of either of two gaseous fuels to the burner, and showing a suitable adjustment to regulate the width of the opening through which the fuelzis emitted, and V v Figure 4, a similar view showing a modi thereof may be adjusted.

the several views of 'and'fitted in the opening soas fied construction by which two be I gaseousfuel may be emitted either separately or simultanenously at the will of the operator. 1

Referring first to Figure 10f the draw ings, the wall 5 of afurnace has an opening 6 into which the burner extends. v

The burner comprises a nozzle pipe 7 connected with a header or main supply pipe 8. The header is connected with a conveniently located source for the supply of gases ous fuel and the flow of gas from the header 1 to the nozzle pipe maybe controlled by a i hand-operated'valve 9. l

to the open end of, the nozzle pipe provides a narrow annular passage 12 through which the gases are emitted. P i

The width of the passage mustnecessarily be varied in accordance with the require-- 7o ments of different kinds of fueland other varying conditions, and it is for this reason desirable that thedeflector be mounted in the pipe so that its distance from the end The deflector is to thisend provided with radial wings 13, that engage the interior of the pipe and permit of sliding adjustment of the deflector in either direction. 1

The deflector, is of conical form to better spread the gas .for its emission through the annular outlet, and its side facing the fur naceis protected from the radiant heat by a comparatively heavy head 14 ofrefractory material that may be strengthened by an embedded reenforc'ement, as shown at 15.

The end of the nozzle-pipe extends into the opening of'the furnace wall in spaced relation to the circumferential surface thereof, and it is held in place by a concentric rin 16 fastened to the pipeby means of spokes 1% to partially line the same; i

The annular space 18-bet'ween the gas pipe and the opening 6 constitutes the inlet for the i stream ofair that together with the gases emitted through the passage 12, forms the combustible mixture by which thefurnace is heated. I v

The air mayenter the furnace by induced A deflector 10 mounted spaced relation 65 or natural draft, usually obtained through the medium of a fanor by means of a high stack, or it may be supplied to the inlet surrounding the gas-pipe under artificially produced pressure.

A suitable means to carry the last mentioned method into effect has been illustrated in Figure 2 in which the opening in the furnace wall around the nozzle pipe is covered by a hood 19 at the end of a conduit 20 that connects with the egress opening of a blow-.

The flow of air to and through the annular inlet may be regulated by means of a damper 22, shown in Figure 1, as consisting of adisk slidably supported by the gas-pipe in spaced relation to the outer surface of the furnace wall. V a

The arrangement of the control valve relative to the header and the nozzle-pipe, as shown in Figure 2, is somewhat different from that of Figurelybut obviously accom plishes the same purpose.

In the construction illustrated in Figure 3, the nozzle is connected with two sources of gas supply by means of a branched conduit illustration that by proportioning the ports" of the valve somewhat differently from those shown in the drawings, the two gases may be supplied to the burner in any desired mixture.

Figure 3 also shows a convenient expedient for the adjustment of the deflector from outside the furnace and if necessary while the burner is in operation.

The deflector slidably supported in the nozzle-pipe as before, is fastened at the. end of a rod 26 by means of nuts 27. The rod projects through a stufling box 28 at the endv of the pipe 7 and is held against longitudinal motion by nuts 29 at opposite sides of a brace 40 fastened at the end of the pipe. It will be apparent that by proper manipulation of these nuts the rod may be moved lengthwise to any desired extent and that the width of the gas outlet between the end of the nozzle pipe and the deflector is correspondingly varied.

In the modified construction illustrated in Figure 4, means are provided to supply two different kinds of gaseous fuel either singly or simultaneously through two annular outlets, juxtaposed to intersect the air stream themselves users of gas.

point and at practifor gases3l, in juxtaposition to the passage 12 thatconn'ects With the interior of the pipe. Gas from a source of supply separated from that to which the header is connected, issupplied to the space inside the collar by pipes 32 and the connection between these pipes and their source is controlled by a valve 33. V.

In order to provide for adjustment of the width of the passage 31 between thecollar and the flange at the end of the nozzle pipe, the latter may have a telescoping section 35, as shown in the drawings.

By proper adjustment of this section and the deflector, the two passages may be varied in width to any desired extent for the main purpose of adapting the burner to the re-fi quirements of different kinds of fuel.

The provision 'of different kinds, of gases either singly or simultaneously to one and the same burner is of more than ordinary importance in furnaces which dependfor For instance in the operation of In theoperation of blast furnaces, there are periods during which no gas is produced and.

during which in effect, the furnaces become These periods occur, for example, while the furnaces are being tapped and the blast is discontinued. Thefeed these other fuels by hand or install for I their use bur-11ers different from those employed for consumption of the blast furnace gas.

By the use of the present burner two different gases may be used either singly or together without any different installation, it

nular passages through which the gases are emitted, may be pre-fixed so that the one burner can be employed to supply either gas in the required quantities for proper combustion without further adjustment. V

being evident that the widths of the'two an- The burner, as shown and described, is not 1 only adaptable for the consumptions of different kinds of fuels singly or together under all conditions, but it provides in a very simple and efiicient manner for the complete combustion of the fuel in order to obtain the maximum value of the heat units contained therein.

'lhese advantageous features of the burner are mainly attributable to the production of a combustible mixture by intersecting astream of air by a current of gas in sheet-like form at substantially right angles to each other and practically at the point of ignition. In this respect the burner differs from those in which the air and the fuel are mixed prior to ignition as in burners of the Bunsen type and from those in which the fuel is supplied through a series of jets between which the air can freely pass.

What I claim and desire to secure by Letters Patent is:

l. The combination with two sources of fuel-supply, of a burner comprising a nozzle having a flanged end, a deflector spaced from said end to provide an annular outlet, a collar spaced from the nozzle and from the flange to provide a chamber having an annular outlet adjacent the other, and valve-controlled nicans connecting the nozzle and the chamber with respective sources of supply.

The combination with two sources of fuel-supply, of a burner comprising a nozzle having an adjustable flanged section at an end thereof. a deflector spaced from the end of the nozzle to provide an annular outlet, a cell; r spaced from the nozzle and from the flange to provide a chamber having an annular outlet adjacent the other, and valve-controlled means connecting the nozzle and the chamber with respective sources of supply.

3. The combination of means providing an air duct, a plurality of sources of fuel, single nozzle connected with said sources for mixing said fuels. an adjustable deflector spaced from an end of the nozzle to provide a passage of variable width for the emission of fuel from the nozzle into the air duct, and means to vary the proportions of said fuels.

4. The combination of means providing an air duct, a plurality of sources of fuel, a nozzle connected with the sources and means on the nozzle for separately spreading the fuels in an outward direction in the air duct in sheet-like form. whereby to be intersected by an air stream in the duct.

5. The comhinati on with two sources of fuel supply, of a burner comprising a nozzle having a flanged end, a duct for conducting a stream of air past said end. a deflector spaced from said end of the nozzle to provide an annular outlet, a collar spaced from the nozzle and from the flange to provide a chamber having an annular outlet adjacent the other.' and valve-controlled means connecting the nozzle and the chamber with the sources of fuel supply, said annular outlets being disposed to enter streams of fuel into the air stream in the duct, whereby to roduce an intimate intermixture of both uels and air beyond the duct.

6. In combination with a furnace having an entrance for the admission of a stream of air, a burner having an egress in said ensignature.

WALTER G. BAGLEY.

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