US1671238A - Apparatus for mixing and burning oil - Google Patents

Description

May 2%, 1928. 1,671,238

A.E.GRANT APPARATUS FOR MIXING AND BURNING OIL Filed Feb. 21. 1920 4 Sheets-Sheet 1 INVENTOR ATTORNEYS May 29, 1928. 1,671,238 A. E. GRANT APPARATUS FOR MIXING AND BURNING on;

Filed Feb. 21. 1920 4 Sheets-Sheet 2 jr m rs May 29, 1928.

A. E. GRANT APPARATUS FOR MIXING AND BURNING OIL 7 Filed Feb. 21, 1920 4 t 5h t 3 7 1 J A Al 9 4/ v IV. V A I no 1. 4 7 f i re 5 1 1 K R/VEYS 4 Sheets-Sheet m mb W I a V \mm 1 Q E 0 m May 29. 1928.

- A. E. GRANT APPARATUS FOR MIXING AND BURNING OIL Filed Feb. 21 1920 HJH vllllrlflrlllllllrllv 3 Ex B Patented May 29, 1928.

UNITED STATES PATENT OFFICE.

ALBERT E. GRANT, OF

TION, A CORPORATION OF DELAWARE.

APPARATUS FOR MIXING AND BURNING OIL.

Application filed February 21, 1920. Serial No. 360,516.

This invention relates to oil burners and particularly to a method and apparatus for providing a combustible mixture of oiland air. The chief object of the invention is to provide for the vaporization of the oil by highly heated gases such as steam with the admixturev of air to form a composition burning with a hot flame of large volume and without the accumulation of a carbon deposit.

A further object of the invention is to provide simple and easily and safely operated apparatus for thus mixing the oil and air.

In the accompanying drawings illustrating one embodiment of the invention in a burner Fig. 1 is a diagrammatic elevation of the mixing and burning apparatus in connection with the flames to be heated by the burner,

Fig. 2 is a sectional elevation of a portion of Fig. 1,

Fig. 3 is a and superheater,

Figs. 4 and'5 are respectively front and sectional views thereof and Fig. 6 is an enlarged sectional elevation of a portion of the mixing apparatus.

In the process of this invention a fluid such as water preferably under substantially constant head is fed, for instance from a tank 10 through pipe 11 to a cross pipe 12 which distributes it to the opposite ends 13 and 14 of a boiler and superheater 15 heated in any desirable manner. The water entering at 13 and 14 passes into'the boiler tubes 16 and 17 where it is vaporized and on into the tubes 18and 19 where it is superheated and passed out at 20 through a pipe 21 connected to a steam jet supply 22 through a regulating needle valve 23 (see Fig. 6) a funnel being provided to carry away any water overflow.

The I superheated steam is passed on through pipe section 24 to nozzle chamber 25 and out through nozzle 26 where it issues as .a. jet forming around it a vacuum area at 27. In this vacuum area 27 is placed the upper end 28 of an oil supply tube 29 receiving oil from a substantially constant oil level supply means maintaining the level of the oil in tube 29 considerably below the end 28 so that suction will be required to draw the oil up and out of the tube 29 and in the absence of such suction the oil level will recede be low the outlet 28. Such oil supply means may for instance be a barrel connected horizontal section of the boiler by siphon 36 to a tank 37 a small hand operated pump 38 and check valve 39 being provided to start the flow through the siphon. As the oil passes over through the pipe 36 it will fillthe lower tank 37 and raise the float 40 to close valve 41 and. shut off the siphon supply and this flow and siphon will maintain constant level in the tank 37 so that the jet from the nozzle 26 will work against a substantially constant suction in the oil pipe 29.

The jet of superheated steam issuing from nozzle 26 will thus draw up and vaporize a supply of oil from tube 29 and in the specific embodiment of the invention shown in the drawings there will also be drawn in by the steam jet a supply of air through the pipe 42 the end 42 of which is also positioned in the vacuum space surrounding the jet. The

mixed jet of steam, oil and air isthen directed through the nozzle 43 around which is a second or auxiliary steam nozzle 44 receiving its steam supply through the branch 45 from the supply 22. The nozzles 43 and 44 are preferably concentric and so arranged that the auxiliary steam jet is in an annular sheet surrounding the central jet of steam, oil and air. This secondary jet further vaporizes the oil and mixes the steam, oil and air into a rapidly projected jet issuing into the tube of the burner which is preferably provided with air passages 51 and air holes 52 supplying further air to the final jet.

The jet issuing from the nozzles 43 and 44 is a highly inflammable and thorough mixture of steam, oil and air and will burn with a hot flame of large volume and without the deposit of any carbon or soot. In this spe cific embodiment of the invention shown in Fig. 1 this flame from tube 50 is directed downward at an angle under the boiler and superheater 15 standing on legs 54 on a fire brick 55 which may for instance be placed over the grate g of the usual steam boiler furnace. The flame curves upward around the tubes of the boiler and superheater 15 and extends upward to heat the tubes or water compartments of the boiler 56, the hot products of combustion finally passing out through the usual chimney flue.

The control of the flame is exerted through needle valve 23 of spindle 6O threaded through nut 61 and packed. at 62 to be steam tight and carrying a hand wheel 63. The

priming;

.tos or similar material handle 74.

must be removed from under the boiler 15 and pad 73 saturated with oil alteravhich it,

greater the opening of the valve 23, the

greater \villibe the pressure off the steamin the steam openings 51 giving 1a large volume with properly proportioned const tuents. In the structure of the mix ng apparatus SllQWItll'l the drawings (see Fig". 6) all the parts are adjustable but predetermined in size justment and the user is limitedfsimply to theturn'ing o'tthehandvvheelbi; The parts;

of this mixer are easily constr ctedand assembled, 'c heapening the cost production and malring the structure convenient torture: pairs replacements.

Inthe specific embodil ent ot the invention sbo vn in the vdrawings the tank 1Q ,for a the wateflsupply is preferably a constant level tank conveniently located in the, build ing Where the heater isinstalled. By feeding the water to theopposite ends 13 and 14: of the boiler and 'superheater two parallel passages forthe steam are provided and con;

nectedat so that fluctuationsdn pressure- Will, be taken careof and equalized Within the heater itsel'f and, Without causing surging of-the pressure and consequent inequali The boiler and superheaten tubes 16, 17; 18 and 19 are preferably packed,

ties in the flame.

as indicated \vitli small;balls of Monel metal which provide additional-heating surface and act to restrict and make tortuous; the passage through thetubes, and also by their relative movement prevent the accumulation of scale. ll he boiler and superheater 15 is mounted on legs 54 not only to permit the free play 01 the flame from underneath but also to provide space for the removable pan 71 which is initially charged With oil and ignited to start the ,burner, This pan comprises a shallowmetal container 72 filled With a porous pad.73 ofl ashesand provided With a To charge this pan with oil it is reinserted under the boiler and iguitedand removed after the main burner begins to" function. With this arrangement 'it is therefore impossible to pour the oil in fluid condition near the surfaces which are liable to be heated near the flash point of the oil andthepriming charge of oil When inserted .1 or v. in. 1 -m1xes and remixes the steam, 011 and air but is correspondingly increased as is also et througlrthe surrounding noz-g zle 4st Z111l lll0l.6flll is drawn in through the a d a l-I trolled by, said steam under the, ooiler will necessarily becontained in the saturated pad 73 and so cannot cause an explosion.

The process of this inventionnot only 70 also permits "of easy control of the mixture by. a single, adjustment. The apparatus shown issimpleinsti'iicture and efiicient and safe muse It, is easily installed and after installation requires no attention except the es ry eg l t on Qti lie iae'ofithe flam y urn ng; he, s ngle andl r i iaherough v poriza i n i l-e l llllr lt e ah. m naot hesans heste t s-e air and oil producesa composit o u g ee with an ensely h t-fl me t, ai'sev lwna; w i h amend v r; t i ati ely 991i .11%, faces to be heatedzwithout the deposit cheap ee. T e pa atusautilizinathisprote ts therefore clean and eflicient and odor essin, usefully consuming all; of the, fpel snp I claim: D

1. Apparatus for vaporizing o mix-Ing Oil "c mr i i gn ans dapted; mi. t am. j and a valve adapte to 041 team, j t, means dapted e; s pply; Q o dam 1 je id il; upplvfieiw Qll'l. l edz y a t ma br v lve. tast -need e simultaneous y supplyai e-sa' dio l supply steam jet, and a sprocket and chain QOIllleQti ing said: steam; v lve nd; air iva y uwh hy movement of the steam va-lvea wi ll; controh;

the a steam, oil and, air supplies.

Apparafius or vaporiz ng i s er. we; burner comprising means adapted to fgrm 109 a eambjet, r team wa ve. a apted .i eeeq z troll said s eam j me ns dapted to; upply oilto saidlsteam jet,ian;air;yalve geared, to. said steam valve toi perat imultan ous-1; 1y; therewith andadaptedijtovsuppl t air -to 10! saidstearn. jet, and a ec nd ineans adapt d; to fornra second steam j' tl q Qmbji nQnWi h/l the mixture ofoil,airand steama, f

3/ Apparatus :for vaporizingj, oil for, a burner com prising means ,adapterl 1;to fo;r a steanrjet, asteam valveadaptedmo co tI' l Saidlsteam jet, means a'daptedgwtog sup ;T

1 ply? oilto said steamjet, an air valye gearedf to said steam valve to operate simultaneousg 1y therewith. and a adaptedLtohsupply Zt-llfltddlfl said steam jet, a secondmeansfladapted to; form a second steamjet to acombi'neawithfthe mixture, of oil, airwan'd steam, and ;a,., see.-I 0nd means adapted to supply air to theinajin mixture of oil, air. and steam;

4. Apparatus for vaporizing oili for, a; burner comprising means adapted to form Steam j te mva ve danted to was, trol said steam jet, means adapted to supigf p y Oil Said t a i ty ai lbeii g- 9 j n airiv lvagear d to sai d steam valve to operate simultaneo ly therewit-h qandjsupply Mair to said (st; j et, 1 and a 2 second 4 means adapted 1 form a ewed r mindli g, was i t' f ea-t e a combine with the mixture of oil, air and steam controlled by said steam valve.

5. Apparatus for vaporizing oil for a burner comprising means adapted to form a steam jet, a valve adapted to control the steam jet, means adapted to supply oil to said steam jet, an air valve geared to said steam valve to operate simultaneously there With and adapted to supply air to said steam jet, and a second means adapted to supply 10 air to the main mixture of oil, air and steam independent of the main mixture.

ALBERT E. GRANT.

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