US1616051A - Gaseous-fuel burner - Google Patents

Description

' 1 1,6115051 Feb. 1,1927. J. E KRESKY,

GAsEQUs FUEL BURNER Filed ct. 2. 1924 2 15116915.5116 1 Patented Feb. 1, 1927.

JESSE E. KRESKY, OF PETALUMA, CALIFORNIA.

eAsEoUs-EUEL BURNER..

Application filed October 2, 1924. Serial` No. 741,148,

AThe invention relates to that type of burner wherein the heat produced is partly utilized to change liquid fuel into vaporous fuel which is consumed at the burner fuel outlet.

An object of the invention is lto provide a burner which may be adjusted to it fire boxes or other containers of different size.

Another object of the invention is to provide a high capacity burner in which there is a free flow ofair to all of the fuel release apertures, so that perfect combustion of the fuel occurs.

Another object of the invention is to provide a vaporous fuel generating burner in which'the temperature of the generator is maintained below the temperature of the ame, so that the generator will not become fouled with carbon as rapildy as do generators which are subjected to the direct action of the ame. Another object of the inventionv is to provide an improved generator which may be readily cleaned and which is constructed since the invention,as set forth in the claims,

features,

to'prevent the passage of solid particles to discharge outlet,

vide a gaseous fuel burner having fuelrelease apertures formed to permit the release of large quantities of fuel without the liability of backfire into the burner.

The invention possesses other advantageous some of which with the foregoing, will be set forth at length in the following description, where I shall outline in full that form of the invention which I have selected for illustration in the drawings accompanying and forming part of thev resent specification. In said drawings I liave shown one form of burner embodying my invention, but it is to be understood that I do not limit myself to such form.

may be embodied lin a plurality of forms.

Referring to said drawings: Figure 1 is va plan or top view of the burner of my invention.

Figure 2 is a side elevation of the burner.

Figure 4 is alongitudinal vertical section of the burner taken on the line 4+4 of Figure 1.

Figure 5 is a cross section ofthe burner taken on the line 5 5 of Figure 2, and showing in dotted lines the extended position of one ofthe fuel chambers.

Figure 3 is an end elevation of the burner.`

Figure 6 is a top view ofa portion of one of the fuel chambers, Figure 7 is a longitudinal section through one end of the generator tube, showing the fuel distributor therein.

The burnerv of my invention is particularly adapted for the consumption of 'a vaporous or gaseous fuel which has been produced from a liquid stock, such as kerosene, distillate and other grades of liquid fuel. The liquid fuel is introduced into a generator or retortin which it is vaporized and the vaporized fuel discharges through a throat wherein it becomes mixed with air, into a mixing chamber in which a homogeneous mixtureof the fuel and air is produced. The resultant mixture is the combustible fuel. From the mixing chamber, the combustible mixture passes into fuel chambers provided with fuel release apertures and the fuel burns at these apertures.

The burner of my mixing chamber 2, closed at its forward end by a wall 3 having an aperture therein in which there is disposed a longitudinally adjustable throat 4. The vaporized fuel is discharged through a nozzle toward the throat and, in entering the throat, induces a flow of air into the throat so that a mixture of air and vaporized fuel is dischargedinto the mixing chamber. The throat 4 is provided with a bail 5 whereby its position may be longitudinally adjusted and varying the position of the throat, the proportion of air and vaporous fuel in the mixture may be varied. The top and side walls of the mixing chamber 2 extend beyond the end wall Sthereof to form a hood 6 which shields the stream of vaporous fuel discharg ing from the nozzle into the throat 4, so that invention comprises a the proportions of the combustible mixture its ends with supports 7 on which the generator tube 8 is carrie-d. Liquid fuel is introduced into the generator tube through the conduit 9 (the fuel being introduced-under pressure) and is vaporized in the generator. The vvaporous fuel produced in the generator, discharges therefrom through the conduit 12 which depends vertically from the tube 8 at the end thereof, remote from the fuel inlet conduit. The conduit 12 is provided witha discharge nozzle'13 which is substantially axially alined with the throat 4 and the flow of vaporous fuel through this nozzle is controlled by a needle .valve 14. "lhe needle valve is providedon its end with a thin blade 15 extending through the aperture in the nozzle, so that in the event the aperture becomes plugged with solid material, the rotation of the needle valve will cause the blade 15 to ream the solid material from the nozzle, thus restoring the nozzle to operative condition.

From the mixing chamber 2, fuel passes into the fuel chamber 16, which is integral with the mixing chamber and which is in communication with the mixing chamber throughout its length. rfhe fuel from the mixing chamber-also passes to a second fuel chamber 17, which is spaced-from the fuel chamber 16-and arranged in side-by-side re;

lation therewith. The' mixing chamber 2 is erably provided with legs 23 for supporting them above the base or supporting element* on which they are placed, to permit the free.

. burner to provided at the end remote from the wall 3 with a pocket 18 into'the side wall of which is screwed a large fuel conducting pipe 19 which is secured to and in communication with the fuel chamber 17. By rotating the fuel chamber 17 about the axis of the pipe 19, the spacing of the two fuel chambers 16 and 17 may be varied, thereby permitting the be adjusted to properly fit in any desired installation. The fuel chambers 16 and 17 are preferably'provided with lateral fuel release apertures 21, and 22, so that the ames of fuel are directed laterally from the fuel chambers. `These-apertures are preferably arranged on both sides of each fuel chamber so that eight rows of flames are produced, four .of the rows between the two fuel chambers 16 and 17. These two chambers'are spaced apart and there is a free air space between them, permitting the free passage of air .to the fuel release apertures on the adjacent sldes of the fuel chambers .to support the combustion of the fuel issuing from these apertures. The side walls of the chambers 16 and 17 are preferably vertical to permit the free access of air to the flames issuing from .the apertures. The fuel chambers are also pi'fe flow of air around the fuel chambers, to p rovide for perfect combustion of the issuing lfuel..

. Each fuel chamber is provided with a top wall 24 having elongatedpassages therein of, less width than the fuel chamber. .Ar-

ranged on the top wall 24 is a gas release aperture bar 25 having elongated passages 26 therein adapted to register with the elongated .passages 27 in the wall 24.v The-bar 25 is provided with a plurality of spaced teeth 28, these on the top and bottom surfaces of the bar, and these teeth cooperate with the wall 24 and the top -plate 29 to form a plurality of gas release apertures 31.

being formed teeth being preferably formed Dueto the of the bar 25 and the plates or walls 24 and l the chamb'er. Should the passages be made shallow, the width would have to be made very small in order to prevent backfire but by increasing the depth of the passages, the Width thereof` may also be increased, permitting the discharge of a larger amount of gas, without the liability of backfire. The top vplate 29 and the bar 25 and the top wall24 are secured together and to the fuel chamber byl the bolts 32 extending downward through the fuel chamber. rlhe generator 8, in which the liquid fuel is vaporized by the heat produced by the combustion of the vaporized fuel, is preferably placed above and adjacent to the fuel release apertures 4of one of the fuel chambers, so that the generator 8 is out of the path of the flames issuing from Due to.

the burner. The generator is thus heated by radiant heat only and not by direct contact with the flames. perature of the generator is kept lower than if it came into direct contact with the flames and as'a result carbonization of the fuel in the generator 8 is greatly reduced. Some Therefore, the temcarbonization will occur.' however, and in order to prevent the solid particles from entering the vapor fluid conduit 12, such conduitis provided with an extension 33 which extends upward into the generator 8 to a point adjacent the top thereof so that solid particles accumulating in the generator 8 will not have-a tendency to pass into the tube 12.`

The generator is provided at its fuel inlet end with a fuel distributor which operates to control the'ow of liquid fuel and to heated. in large masses;v 'This distributor preferably comprises an integral structure consisting of a plurality of spaced metallic discs 34, the discs being integral with the fdistribute such fuel so that it will not be intervening' studs. The discs are somewhat generator tube 8, s permitted to flow and is held in position -therein byia s wire 35 which projects from the endo'f distributor into contact withan abutment, such as the extension 33, in the tube The tube 8 will in time become fouled with car-v smaller in diameter than'the interior of the v 'at the liquid fuel is vuw, dises The die tr1butor is unattached'f tothe generator tu A12e ,v

exposing the end of the distributor. At

such end, the distributor is provided lwith a= screw socketand a suitable removing tool, such as a screw-eye 38 may be screwed into the socket for the purpose o-f withdrawing the distributor. In the event that the carbon in the generator has caked and the distributor is held tight, a blow, as by a hammer, on the eye 38 will free the distributor in the tube so that it may be withdrawn. The wire is sui'liciently `flexible to permit the distributor. to move inward under the blow.

For the purpose of initially starting the b burner from a cold condition, a trough 37 is provided on the top wall of the mixing chamber 2 and this trough is directly below thev generator 8. This trough is usually filled with absorbent material, such as asbestos, and by saturating this material with gasoline or-kerosene and igniting the saturated material, sufficient heat is developed to raise the temperature of the generator to a sufficient degree to vaporize the liquid" fuel therein and this vapor then passes into the mixing chamber and ou.'y cf the fuel release apertures, where it is ignited by the .fiame rising from the saturated material in the trough 37. Vhen the two fuel chambers 16 and 17 are spaced apart aconsiderable distance, the fuel issuing from the release apertures of the burner 17 may not be ignited by the flames from the burner 16, and

- to insure the ignition of the fuel being discharged from the burner 17, I have provided a pilot light on lthe burner 17. This pilot comprises a small trough 38 on the top wall of the fuel chamber 17, which. trough is filled with an absorbent material such as asbestos. Before the burner is initially started this absorbent material is saturated with a fuel such as" gasoline or kerosene and the fuel is ignited. This fuel burns in the trough 38 until fuel is discharged from the fuel releaseapertures of the burner and then such discharging fuel is ignited by the .flame of the pilot burner.

I claim:

1. In a gaseous fuel burner, a mixing chamber and a pair of longitudinal spaced parallel fuel chambers provided withfuel release apertures, communicating with the mixing chamber, the spacing between said chambers being adjustable to vary the width of the burner.

2. In a gaseous fuel burner, a mixing chamber, a longitudinal fuel chamber provided with fuel release apertures Yfixed thereon and communicating with the fuel 4charnber, a second longitudinal fuel chamber provided with fuel release apertures, spaced from said first fuel chamber and meansl adjustably connecting the second fuel chamber with the mixing chamber. whereby the distance between the two fuel chambers may be varied.

3. .In a gaseous fuel burner. a mixing chamber a longitudinal fuel chamber provided with fuel release apertures, communieating with the mixing chamber, a second longitudinal fuel chamber provided with fuel release-apertures, spaced from and disposed in parallel relation to said first fuel chamber in a horizontal plane, there being a clear open space between said fuel chambers to permit the passage of air between said chambers and means connecting the second fuel chamber with the mixing chainer and permitting relative rotation therebetween.

4. In a gaseous fuel burner, a mixing chamber, a longitudinal fuel chamber provided'with fuel release apertures, communieating with the mixing chamber. asecond longitudinal fuel chamber provided with fuel release apertures` spaced from and disposed in parallel relation to said first fuel chamber, there being a clear open space be# .tween said fuel chambers to permit the pas- 'videdwith fuel release apertures, the two chambers being arranged side by side and a connecting pipe secured to one chamber adjacent one end thereof and screwed intol the other chamber at the adjacent end thereof, said pipe being enteredinto the latter chamber for a sufficient distance to permit variation in thespacing of the two chambers without breaking the connection between them.

6. ln a gaseous fuel burner. anelongated mixing chamber. an elongated fuel chamber provided with fuel release apertures, formed integral with the mixing chamber and in' communication therewith, means for introducing fuel into one end of the mixing chamber, a second elongated fuel chamber provided with fuel release apertures, arranged at the side of and spaced from the first fuel chamber and an adjustable conduit connecting the end of the mix'ing chamber remote from the fuel introducing means, with the second fuel chamber whereby the distance t between said chambers may be varied.

' 7. In a gaseous fuel burner, a pair of connected fuel chambers, each provided with fuel release apertures, spaced apart in side by siderelation to permit theipassage of air upward between the chambers to the fuel release apertures and legs for supporting the bottoms of the chambers above the element on which they -are supported. to permit the free4 passage of air under the chambers and means for varying the distance between said chambers.

the chambers being 8. In a. gaseous fuel burner, a fuel chamher having a narrow, elongated fuel .discharge passage in its upper wall, a bar having a longitudinal series of passages there- 5 thru registering with said fuel discharge passage, the spaces between the passages of said series being oczupied by transverse bridges, teeth on the upper and lower fases of said bar coinciding with said bridges, the teeth l0 on the lower surface engaging the upper wall and forming therewith a plurality of fuel release apertures corresponding with the passages of said longitudinal series, and a plate` overlying the bar and forming a plurality o fuel release apertures correspond- 15 ing with the passages of said longitudinal series. Y In testimony whereof, I have hereunto set JESSE E. KRESKY.

my hand..

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