US1434159A - Gas burner - Google Patents

Description

F. W. SKINNER.

GAS BURNER.

APPLICATION FILED ocr. Io. 1921.

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FRANK W. SKINNER', 0F TAFT, CALIFORNIA.

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GAS BURNER.

Application led ctober 10, 1921. ASerial No. 506,599. y

To all 'whom t may concern.'

Be it known that l, FRANK v j a citizen of the United States, residing at Taft, in the county of Kern and State of` California, have invented new and .useful improvements 1n Gas Burners, of `which the following is a specification.

rllhis invention relates to gas burners and is particularly directed to a burner especially adaptable for firing furnaces. u

The objects of the invention are, to provide a burner having a burner tube in which the gas supply is directed in hollow cone formation across the area of the tube so that all the air entrained through the tube to form with the gas a combustible mixture ,must pass through the gas conegto provide means independently varying the amount of air entrained through the tube; to provide means independently varying the volume of vthe gas cone; and to provide means for combining steam with the gas before 1t enters the tube.

Various other objects' and advantages will be more fully apparent from the following description of the accompanying drawings which form a part of this disclosure, and which illustrate a perferred form of embodiA ment of the invention.

Of the drawings:

Fig. 1 is a vertical section through a por! tion of a furnace with my improved type of burner installed therein.

Fig. 2 is an enlarged section through the rear portion of the burner.

Fig. 3 is a section on line 3-m3 of Fig 2.

In the preferable method of installation as illustrated in Figure 1 the burner projects downwardly at an angle through an opening in the furnace wall with its axis in line with a baffle wall extending across the floor of the furnace, there being no air admitted through the opening through which the burner pro- `ects. v J The burner comprises a burner tube 1 and a burner head 2 screw-threaded on the outer end of the tube, said head having a gas nozzle 3 projecting axially into the tube and centrally bored to accommodate the fuel control mechanism. The burner head 2 is: provided with a plurality of circularly spaced air inlet ports 1 and rotatable on the head is a sleeve valve member 5 having a like number of openings. and constituting a means by which the air admitted to the burner may be independently controlled. A

set screw 6 carried bythe sleeve 5 engages the head 2 and serves as a means for retaining the sleeve in adjusted position.A j n Thev forwardv edge ofthe gas nozzle is tapered outwardly to form an angled valve seat 7 and cooperating with saidv seat is a valve 8, of coneformation, the seat and valve cooperatingto form an annular fuel orifice angled to direct the fuel into the burner tube in hollow cone formation and against the side walls ofthe tubey so that all the air entrained through the airinlet ports 4 must pass through such gas cone. j ,j

The valve v8 is carriedbya valve stem 9 70 which extends rearwardly-through a plug 10 screw-threaded into the burner vhead *and* through a. stuiiingbox 11. The stem hasja screw-thread.engagement lwith the plugk 10 and by turning the stem by the handle 12 ythe 75 `y valve 8 may be translated to vary the volume of the fuel fed into the burner tube.

An inner tube 13 surrounding the valve stem, is screw-threaded into the plug 10 and projects forwardly to a point just rearwardly of the fuel valve 8 and a steam supply pipe 14 is screw-threaded into the side of the plug 10 and is in communication with the inner tube 13. A gas supply pipe 15 is screw-threaded into the side of the burner head 2 and communicates with the bore o the fuel nozzle 3.

In the operation of the burner the gas under pressure is fed from the fuel nozzle 3 in the form ofa hollow cone directed forwardly and towards the walls of the burner tube. By this arrangement all of the air which is combined with the fuel in the burner must pass through the fuel cone thereby causing a very intimate mixture of the fuel and air.

This, in effect, produces` a thin partition of fuel across the entire area of the tube with the air passing through such fuel partition in a manner by which the maximum area of the fuel molecules will be exposed to intimate contact by the air in its passage through the fuel partition.

Such arrangement results in a perfect mixture contributing to maximum burner eliciency.

In some instances it is desirable to combine a certain amount of steam with the fuel and to meet such conditions the burner is provided with the inner tube 13 by which 110 steam is conducted to the nozzle and combined with the fuel.

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lt is, not intended to? confine Athe invention v to the' onefrmorrnI oi` embodiment-'herein illusL trated and described, for it is susceptible-oiY embodiment in Various othery forms all corning Within the scope of" the claims whichV `follow. :.f.

l claim: u l. A gas burner cornplingl'a fuelfnoi'zle tube having an annular seatat its forward endland; a closure'"atits're'arv en'd, a"A conev t valveicooper'ating with saidf seat-to'iornr annular :tuel0r1ice,-apValve stern connected Y A to'tlieape of'tlieValVe andihavingascrewtube p 'astitlieffuel inletto;A a point adj acent" th`e`1-c'one' Valve", vSaid lSteam" tubef 'having an j operi* "orvva-r'd@end for discharging steam vdirectly along the rod and against" the Valve 'surfa'ce` to thoroughly scour the' ro'dIl and valve@ sur-ace,"v a'nda steam l inlet? `or' the ste'arn tube.v

agf-as'lburner", a burnertube havingani ai-if inlet; l a u'el'j nozzle axially aligned Wit-hand'y extending into the tubeV beyond the air 'iii-'iler with ite forward" end J'orrned to provide an annular valve seat, a cone Valve cooperating with Said seat to form an annular fuel orifice directing a hollow cone shaped column of fuel ytowards the tube Walls, a itting closing the rear end'of the nozzle@and?havingfavsteam inlet, a valve actuating rod Secured to ythe apexV end of the cone Valve 'anchham`1if a. screw thread" engagement 'in Said iitting` rearwardly spaced from,v the 'rod`- and'v having an' open inne'r end discharging's'tearn directly along Y the rod?and' against the' valVesura-'ce 'tol thoroughly scour the*rodzfandvalvesurface;

the rod' being" entirely `Supported" lby said fitting.-

signed-a Tae;oaiifmm;nieuwe'day

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