US1671494A - Fuel burner - Google Patents

Description

May 29, 1928,

Ll c. R. STEWART FUEL BURNER Filed March 114, '1925 a sheets-sheet 1 (Ya/ente Fussell ,Sie warf:

I N VEN TOR.

May 29, 19.281 1,671,494

c. R. STEWART FUEL BURNER Filed March 14, 1925 2 Sheets-Sheet 2 [Jaren ce Russell ,S'ewar lNvENToR BY l ATTORNEY Patented May 29, 1928.

UNITED STA .l l .l CLARENCE RUSSELL STEWART, OIEYMONTEREY PABX, CALIFORNIA, ASSIGNOR TO I PATEN.T"-.oi-Fic\i3;

4V:PEABODY ENGINEERING CORPORATION, OF NEW YORK, N. Y., A 'CORPORATION OF NEW YORK.

FUEL BURNER.

Application led March 14, 1925. Serial No. 15,568.

This invention relates to a device for burning fuels in theform of' elastic fluids, mixtures of, fluids, or mixtures of fluids and solids in which the fluid or mixture to be burned is projected in the forni of a hollow divergent cone into a stream of air or oxygen with which it is mixed and carried into' a combustion space, and has for its object the production of a burner that will burn either or both'nonelastic fluid 'fuel and fuels in the form of liquid including mixtures of ysolids and fluids, in. the same furnace, using the same furnace wall opening and coinbustion air system, also providing a means of changing from oneto the other fuel with the least possible delay.

It will be noted that air vor other gases Imay be charged with large quantities of fineelastic fluid mixture is for combustion pur.-

poses similar to a gas and can be burned like. a gas in suitable apparatus'. My invention is therefore capable of burning liquid fuel' and any other combustible in an elastic fluid form.

A further object is the combination ofv liquid and gas burners so arranged astoprovide two divergent concentric cones of fuel when both are in use, and to permit the withdrawal of either to inoperative position as desired.

The foregoing and other featuresof my invention will now be described in connection with the accompanying drawing forming part of this specification, in which I have represented my fuel burner in -its preerred form, after which I shall point out Amore particularly in the claims those features which I believe to be new and of vmy own invention.

Figure 1 is a longitudinal section of my burner supported in a frame of an air reglister which may be mounted in a furnacel Wall. e

Figure 2 is a cross section along the lines- 2-2, Figure 1. i

Figures 3 and 4 are modified forms`of burners which I may employ.

In the carrying out of my invcntionI einploy an atomizer for liquids 1 which may he of any typJeJ such-as the so-called mechanical atoinizer with or without'an oilrrcturn line, or steam or air atomizer. .Surrounding this atoinizer is a gas or fluid supply duct 2 of annular .section foi-'med by two concentric pipes- 2" and 2 closed lby a suitable wall at one end 2? and having an annular discharge p orifice 3 at the other and an inlet 4. 1T he llugs Qd serve to' keep the two pipes concenfric` inasmuch as they are not connected together in any way at the discharge end. At

the same time the lugs 2d are small in area and do not seriously interfere with the flowV fof the4 fluid. rl`he orifice 3 may be fixed as shown at`3 in Figure 3 or may have a variable* annular orifice as shown at 3 in Figure 4 so arranged that the orifice opening may be changed while the burner is in service. ClVith this latter arrangement a nearly constant fluid pressure and fluid exit velocity may be maintained at the burner tip throughout a wide range of volumelburned.

Surrounding this tubular gas supply pipe 2b, I provide a tubular sleeve 5 which slides in the air register frame 6 and carries on its furnace end a flame plate or diffuser 7. In-

lasmuch as any form of airregister or diffuser may be used they are not further described herein. v The oil burner or lat'omizer 1 slides inside t'lie tubular gas burner and may be -held in adjusted position therein by any well known means as for example set screw 8. Likewise the tubular sleeve carrying the diffuser 7 is heldin normal position of operation by means 9 andthe whole burner within the air register may be held by the set screw 10.I y It will be readily understood that with this arrangement either burner which is not in use can be drawn back so that the tip will be away 'from the heat. Also both' burners and flame plate are adjustable with ,reference to the-air register frame.

REV

Referring to Figure 3 lwhich is a simple y modification of my device, the pipe 30 is belled outon one end and threaded at the other. A cone 31 supportedon rod 32 is ri 'dly held coaxial with pipe 30 by pins 33. he annular discharge orifice 3 as illustrated in Figure 1 may be varied by adjustf ing the cone piece 40 and securing it in adjusted position'by a lock nut 41. If however it is advisable to provide a means-for adjusting the annular dischar e'orice while- Figure 3 but act as a guiding means in con-v tact with the inner wall of the pipe to keep the cone 4() coaxial with the throat piece 43.

I wish it distinctly lunderstood that my fuel burner described and illustrated is in the form in which I desire to construct it and that changes or variations may be made as may be convenient or desirable Without departing from the salient features of my invention and I therefore intend the following claims to cover such modifications as naturally fall within the lines of invention.

I claim zl 1. A burnerconiprising a frame, a tubular sleeve slidable in said frame and carrying at one end a flame plate, a tubular gas supply pipe slidable in said sleeve and having an annular discharge orifice, and an oil burner pipe slidable in said gas supply pipe and having its discharge orifice adjacent the annular discharge orifice when in operative position.

2. A burner comprising a frame, a tubular sleeve slidable insaid frame and carrying at one end a flame plate, a tubular gas supply pipe slidable in said sleeve and having an annular discharge orifice, an oil burner pipe slidable in said gas supply pipe and having its discharge orifice adjacent the annular discharge orifice when in operative position, and-means for holding the gas supply pipe in either operative or inoperative position.

3. A burner comprising a frame, a tubular sleeve slidable in said frameand carrying at one end va ila-me plate, a tubular gas supply pipe slidable in said sleeve and having vana'nnular discharge orifice, an ,oiI burner pipe slidable in said gas supply pipe and having its discharge orifice adjacent the annular discharge orifice when inoperative position, and' means for holding the oil burner pipe in either operative or inoperative position.

4. A burner comprising a frame, a tubular sleeve slidable in said frame and carrying at one end a flame plate, a tubular gas supply pipe slidable in saidl sleeve 'and having an annular discharge orifice, an oil ``burner pipe slidable in said gas supply pipe and having its discharge orifice adjacent the annular discharge orifice when in operative position and means for holding either or both of said pipes in operative or inoperative position.

5. A'burner comprising a frame, a tulou-v lar sleeve slidable in said frame and carrying at one end a. flame plate, a tubular gas supply pipe slidable in said sleeve and hav- Iing an annular discharge orifice, an' oil' burner pipe slidable in said gas supply pipe and having its discharge orifice adjacent the annular discharge orifice when'in operative position, and means for holding Said flame plate in adjusted position.

6. A burner unit comprising a plurality of i coaxial fuel supply pipes, a s eeve surrounding the outer end of-said pipes, all of saidl parts being mounted in asupport, means to unit as a whoIe or of the parts thereof independently of each other, and a diffuser or flame'plate mounted on the forward end of' said sleeve.

7. A burner unit comprising aframe, .a sleeve adjustably supportedtherein, a lurality of fuel supply pipes supported Within said sleeve and coaxial therewith, a coni-V CLARENCE RUSSELL STEWART.

I effect the longitudinal adjustment of the`

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