US1688827A - Burner - Google Patents

Description

23,1928. 1,688,827 J. H. NELSON BURNER Filed Sept. 14, 1925 ade 72567 175/32 M6502 B W6 6 Patented Oct. 23, 19-28.

UNITED STATES v 2 11,688,827 PATENT -OFFIC-E'.

JOHN H. NELSON, OF WORCESTER, MASSACHUSETTS.

BURNER.

. Application filed September 14, 1925. ,Serial No. 56,137;

, liquid fuel mix when they are moving in the same direction; also toprovide means for forcing the liquid fuel to travel in a pathat first transverse to the direction of the atomizit along a surface as a film in a position to be impinged. upon by the atomizing currents throughout its area until the liquid fuel is taken up by the atomizing. current; also to provide means for deflecting the mixture, if

desired, so as to spread it and make a wide flame.

Other objects and advantages of" the invention will appear hereinafter.

; Reference is to be hadto the accompanyin drawing, which is a sectional View of anoi burner provided with a preferred embodiment of this invention.

Ordinarily both in the burning of oil and in the mixing of air and gas in the carburetor, the two streams are. brought into contact wl1en moving in practically the same direction and when the stream of liquid is in the form of a spray orcurrent. 'Evenwhen it is sprayed the particles of liquid hang together and the air or steam merely moves along with it in the same direction so that it is well known thatthe atomization is very incomplete and part of the fuel is not only wasted as far as production of heat is concerned, but it also produces deposits on the parts which necessitate their frequent cleaning in orderto keep up the efficiency.

In order to overcome these defects I provide a burner having a casing 10 with an.

inlet 11 supplied with an air' or steam cur rent from a blower or otherwise. The air orsteam is discharged from the casing throughits outlet 12 into a casing or nozzle 13 which has an opening 19 at the end to let it out; Across the opening 12 is. a spider 14 in the present case for supporting other parts, as will appear, and not. interfering with the current of atomizing medlum.

Extending through a part of this casing mg medium as air or steam and then. spread 10 is a pipe 15 connected with a supply pipe for conducting a current of oil. This pipe is held at the center by the hub of the. spider 14: and iscentrally located in the casing 10. It 1s screwed into the end of a solid block or body 16 ofmetal or the like which has a passage 17 beyond the pipe for receiving the oil therefrom. From this passage extend ports 18 to the exterior-of the solid block 16 which I preferably make in the form of a cone with the large end extending outthrough the perforation 19 in the end of the nozzle 13, Surrounding the inner part of the cone 16 and the end of the pipe '15 is a. cylindrical tube 20 fixed to the spider 14 and centrally located therein so that its wall may receive fuel from the ports 18. The end i 'of this tube 20 is spaced from the cone 16 so as to provide a passage for the mixture. The end of the cone 16 may; terminate in the line 21 if desired, and in that case a long straight flame is secured but I have shown a deflector 22 which is a solid piece of metal secured t6 the'block or cone 16 by a screw 23 and having an'outwardly flaring circular surface to divert themixture and spread it. Holes 24 are boredi through the deflector to break the vacuum otherwise formed and thus increase the temperaturev of the flame.

The nozzle 13, is screw threaded on theout side of the outlet end of the casing 10 so that it can be removed after the cone- 16 is taken out or adjusted to regulate the area of the nozzle openingat' 19.

In operation, the oil flows into the space 17 and out through the ports 18 so as to be received on the outer surface of the block or cone 16. If any of it comes out with two much force to be spread on the surface, it'

be on the interior of the tube 20. In either eventthe continuous fresh supply of air or steam coming in and passing through this annular space will'take'up the film or films of oil on these surfaces and without any loss i necessity of spraying the oil. It is found in practice that substantially all of. the oil is then taken up by the atomizing medium and finely atomized and carried along with the air or steam through the outlet .19 which,

i on account of the cone is only a thin annu- -which I have found in maximum heat with a minimum quantity of lar space. It can be ignited here and in the form illustrated in the figure, will spread a flame out all around in a circular manher practice to provide oil so as to provide the highest degree of efficiency.

In this way it will be seen that with a very 16 and the tube 20 is provided for the same purpose as before. The nozzle 13 is omitted and the operation is exactly the same and with similar advantages.

Although I have illustrated and described really only one form of this invention and described it as applied for only two purposes,

. I am aware of the fact that other modifica- 1 time can be made therein, and that it can be used for other urposes of an analogous nature, without eparting from the scope of the invention as expressed in the claims.

Therefore I do not wish to be limited in these respects, but what I do claim is 2- 1; In a. device for mixing liquid fuel with an atomizing medium, the combination with a nozzle having an opening therein, and a conical body located in. said opening its larger and projecting therethrough, and spaced from Its edge all around to provide an outlet for the escape of the mixture, of means for introducing liquid fuel in a position to spread on the surface of said body,

means for directing the atomizing medium alon said surface toward the outlet to take up the fuel therewith as it passes out of the outlet, and a tubesurrounding the smaller end of said body and extending a distance therealong open at both ends to receive and discharge a current of an atomizing medium,

interior to the surface thereof to spread the fuel in a thin film on said surface in the path of the current of atomizing medium, whereby the fuel is atomized before and in passingout of the space between the body and the ed 6 of the opening, and a tube surrounding t 1e body at the points at which the fuel passes to its outside surfaces for receiving any fuel against it that may be projected from the opening, whereby another film of fuel is formed on the tube and taken up by the atomizing medium in the same way,. said tube being of a diameter inside equal to the diameter of said tapering body at a point about midwa between i s ends.

3. In a device for mixing liqgid fu l with an atomizing'medium, the com ination with body located in said opening and spaced from its edge to provide an opening for the e escape of the mixture, said body being proa nozzle having an opening therein, of a vided with a spreadin 'device on Its end he yond the nozzle for mixture outwardl in a sheet around it, said spreadin device aving lon itudinal erforations t rough it, means for intro ucing liquid fuel in a position to surface of said body, and means for directing the atomizing medium along said surface toward the outlet to take up the fuel as it passes out of the outlet.

In testimony whereof I have hereunto aflixed my signature.

JOHN NELSON.

irecting the explosive spread on the

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