US1536583A - Hydrocarbon burner - Google Patents

Description

May s, 1925. 1,536,583

R. o. HUMPHREY.

HYDROCARBON BURNER Filed Feb. 18, 1922 4 Sheets-Sheet 1 lllllllll/"""" May 5, 1925. 1,536,583

R. o. HUMPHREY HYDROCARBON BURNER Filed Feb. 18, 1922 4 Sheets-Sheet 2 [nue/r Haley/L @Vamp/ing] May 5, 1925. R.- o. HUMPHREY HYDROCARBON BURNER 4 Sheetssheet 3 Filed Feb. 1B, 1922 SEAN NNN

lll; YI n 55% May 5, 1925. 1,536,583

R. O. HUMPHREY HYDROCARBON BURNER Filed Feb. 18. 1922 4 Sheets-Sheet 4.

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Patented May 5, 1925.

UNlTED S''a P'ENT QFFICE..

RALEIGH O. HUMPHEEY. F CHICAGO, ILLINOIS, ASSINOR 'ISO ,AMERICAN AUTOMATIC HEATING COMPANY, OF CHICAGQ, ZLIJNOIS, A CORFGRATION OF DELAW'ARE.

HYDROGARBON BURNER.

Application tiled February 18, 1922.

To HU fle/7mm if 12mg/ contara.'

Be it known that l, llamaron (l. Heim Primer, a citizen ot the luited States. residing at Chicago, in the county oi Coal; and State ot Illinois, have invented a certain neuv and usetul Improvement in Hydrocarbon Burners, ot which the following a full, clear, concise, and exact description reiterence heilig had to the accompanying drawings, forming a part ot this specifi ation.

This invention relates to imrn'ovements in hydrocarbon burners.

One object ot' the invention is to provide a burner adapted to use kerosene or other relatively low grade hydrtafarbon tuel and wherein the t'uel is ctuiiinuously vapor-ized before. being mixed with air.

Another object ot the invention is to provide a hydrocarbon burner vfherein are employed main and auxiliary 'aporizing geuerators providing the vapor-ized tuel i'or maintaining the necessary tenipe'ature ot both generators and all fuel vaporiyzed in the main generator being utilized productively.

Another object ot the invention is to provide a hydrocarbon burner which is especially adapted for use vvith landraces, hot water heaters and the like to replafe the usual tuel, said burner having means 'l'or automatically regulating the amount ot vaporixed luel and provided also with means tor autonnltically shutting oliA the supply of the hydrocarbon tuel to the burner When the 'llame is extinguished trom any cause.

Uther objects ot the invention will more clearly appear from the description and claims hereinafter following.

lu the drawings forming a part ot this specitication, Figure 1 is a combined side elevation and vertical sectional view ot' a burner embodying my improvements and a hot air 'l'urnace with which the burue is adapted to be employed. Figure il an enlarged end elevational viexv ot they improved burner shown in Figure l. Figure l is a top plan vieuv ot the iuulrovcd burner with the cover or casing removed. Figure 'lis an enlarged v rtical. longitudinal sectional view ot the burner correspoiuliug to tlze section line tut ot Figure Figure 5 is a detail vertical sectional vievvY correspomb ing to the section line ot Figure 2. Figure (l is an elevational vlevv ot an air Scral No, 537,366.

controlled valve tor the mixer and corresponds approximately to the section line (lie ot Figure l. Figures 7 and S are vertical sectional views taken transvesely ot the burner and corresponding` with the section lines Tis-T ot Figure 1 and S-S ot Figure l, respectively.

ln said drawings, my improved burner is designated generally by the reference character il and the hot air furnace with which it is shown associated is indicated by the reference character l5. The furnace B is shown provided vvith a lire pot 1t), grate 1l` combustion chamber 12 and suitable lilies customary in air furnaces. As will be un derst ood by those siiilled in the art, my improved burner may be employed with hot vra-,ter r steam heaters.

rl`he improved burner, as shown, employs a main hase or bed plate. 13, to the four lorners ot which are vertically adjustably attached pedestals or teet lll-14 so that the height ot the burner from the lloor or other support may be adjusted, as vvill be understood, The base plate 13 is cut away centrally as indicated at 15 in Figure T and disposed within said opening is a removable pan 1t? lilled With absorbent material 1i' so that a priming pan is thereby provided to be used vvhen the. burner is lirst started.

Secured to the base plate 13 near each end thereof are vertically eXtendin T standards or end plates 1S and 19, the latter being arranged parallel as shown best in Figure 3. Said end plates 18 and 1S) are preferably bolted or otherwise detachably secured to the base plate 13. The end plates 18 and 1) are notched at the tops thereoic as indicated at 2t) in Figures T and 8 and within said notches 2t) are adapted to be received the extended ends 2l and 22 ot the main generator (l.

lelovv the main generator (l is located the auxiliary generator l), lnet'erably in the Ytoria ol' a pipe, which is extended through a sleeve or bearing l provided in the end uall lt' and through au opening 2l in the end vvall l).

lelovv the auxiliary generator ll and cit-- teiuling between and secured to said end ivalls 18 and 1f) is the burner proper desig nated generally by the reference character F. riaid burner proper E, as shown, consists ot tu'o horizontal and parallelly arranged pipes 25"-*25 laterally sepa rated and each provided on the top thereof with a series of transversely extending burner slots QGZC. The pipes 25 are suppiied with vapor-ized fuel mixed with air through openings QT-#Bi' in the end wall lt) which are in minnnuuication with a mixing chamber 28 provided in an integral goose neck pipe ift. the upper end lt) of which is extended over the delivery end of the auxiliary `gen xrater l).

The main generator Y, as shown best in Figure 7, is of semi-cyliiidrieal fornuttion havingl a flat bottoni wall l and a curved upper wall 32. The width of the fiat bottom wall 31 is slightly greater than the distance from the outside point on one pipe to the outside point on the other pipe .25 so that the tiame arising from the pipes 25 will strike against the flat bottom wall 3l of the main generator and heat the latter intensely, at the same time heating the auxiliary generator" D which is located between the main generator and the burner proper and intermediate the pipes of the burner proper.

The fuel is applied to the burner from a tank. not shown, which may be arranged to feed the fuel either under gravity or under air pressure, the fuel being supplied through a main feed pipe 233 (see Figures l and 2) which leads into a T-coupling 34 from which are extended upper and lower branch feed pipes 3.3' and Sti leading to the extended end 2l ot' the main generator (l and the extended end 232' of the auxiliary generator l) respeetively. lu the branch pipes ifi and t are individual manually operated control valves and Sti. respectively. There is also a niain control valve 4t) for the main suppiy pipe Si). said valve 40 being operated automatically, as hereinafter explained.

ythe fuel supplied to the auxiliary generator l). through the brauch feed pipe S5. tiows along the pipe-lile generator l) and will be vapor-ized and ejected as a vapor through the discharge nozzle 4l into the goose neck mixing chamber, heretofore referred to. The amount of vaporized fuel delivered from the auxiliary generator is controlled by a needle valve 42 having a rod 43 which extends out of the left hand end. as viewed in Figure 4. and has threaded connection with a nut 44.

The fuel supplied to the main generator C through the brani/fh pipe is vaporized within the main part of the generator and is delivered through the extension QQ and finally through a nozzle 45 into the air mixing pipe 4G. The, amount of vaporized fuel delivered through the nozzle 45 is controlled by another needle valve 47 carried at the end of an operating rod 48. the opposite end of said rod 48 having a steep pitch thread sleeve 49 Secured thereon and with which cooperates a pin 5t) so as to produce relatively great movement longitudinally or axially of the needle valve 47 for compara tively small arcs through which the open ating rod 48 is turned, for the purpose here inafter described.

The outer end of the operating rod ta. as shown in Figures 2 and 4, has rigidly secured thereto a lever 51. The other vatve operating rod 43, at its outer end, has rigidlj,v secured thereto a two-armed bushing 352 and a loosely mounted lever' 53, the inner extended end 54 of which works between the arms of the bushing 52 to provide for a predetermined amount of angular lost motion. The levers 5l and 53 are extended iu the same general direction and are adapted to )e connected to and to be simultaneously and similarly operated by a chain or cable 55 which passes around a suitable pulley 5o, Said chain or cable being operated by a suitable motor, not shown, the motor in turn being controlled by any of the well known types of thermostats so that when the temperature of a room heated from the furnace B, reaches a predetermined maximum` the motor will he operated so as to move the chain or cable in the direction indicated by the arrow ,fr and when the room temperature reaches a predetermined minimum, the chain or cable is operated in the opposite direction. ln this manner. automatic control ot nay improved burner is readily obtained. as will be understood.

it is oi' course desirable that the generator be never entirely shut ott' automatically except in extreme cases and it is also desirable that said auxiliary generator be maintained at a fairly constant temper-- ature without waste of fuel. For this purpose, the lost motion is provided for between the lever 53 and the needle valve rod 43 so that. although the operating rod 4H for the control valve of the main generator C will respond quickly and fully to alt movements of the chain 55, on account of the steep pitch thread and pin 49 50, the auxiliary generator D will not be affected by small or minor movements of the chain and will only be affected when a relatively great change is required in the amount of fuel vaporized for the burner proper E. ln this n'lanner. while only a slight amount ot vaporized fuel may be required in the furnace or other heating apparatus. never theless the tempe ature of the main genen ator well as the auxiliary generator can be maintained Without unnecessary waste ot' fuel and in condition to immediately start vaporizing any quantity of fuel in the main generator when heat is required in the furnace.

The vaporized fuel from the main generator is supplied to the mixing pipe to as hereinbefore explained. The latter. at its auxiliary llt) tft)

admission end, is provided with a circumferentially vperforated bushing 57. Said bushing 57 is also provided in the wall 58 thereof adjacent the needle valve, with a pair of diarnetrically disposed arcuate slots 59 59 which are adapted to be covered and uncovered by a rotatable valve 60 having corresponding diametrically disposed slots (l-(l (sce Figure t5). The plate valve 6d has a handle 62 adapting it for manual control.

The air mixing pipe 46 is entered through the ash door or other suitable opening of the furnace beneath the grate and then extended upwardly through the latter into a cylindrical chamber 63 from which are extended laterally a series of burner pipes (S4-64, the latter' of course being located within the tire pot 10.

The generators C and l) and the burner proper E are enclosed or covered over by a casing or shell F, the latter being supported on the base plate l?) and removable therefrom. Said shell or casing F consists preferably of an inner cast iron wall 65 covered with a layer of asbestos or mineral wool 66 and an outer layer of sheet metal (i7. As will be understood by those skilled in the art, vents 68-68 are left on the sides so as to admit the necessary amount of air for combustion. To utilize the heat from the burner proper, which would otherwise be dissipated from within the casing F, the products of combustion are led through a lateral pipe 69 and conducted to the interior of the furnace through any suitable opening` in the front thereof, geuerally the usual flue door T0, so that said products of combustion arc utilized productively in heating the air or water, as the ease may be.

'l'o automatically sluit oli' the supply of fuel to my improved burner, in the event the generators or burner proper are stopped for any reason, l employ the following arrangement. Disposed beneath the discharge nozzle 45 on the main generator and below the perforated bushing is a drip pan 77 carried on the end of a lever 78 which is pivoted intermediate its ends as noted at Tf) to an upright arm 80 secured to the base plate lll. The opposite end of said lever 7H is formed with a latch or trigger linger tl cooperable with a notched or shouldered wheel 82 rigid with a horizontally extending shaftf 83. Said shaft 83, on its end nearest the main shut-olf valve 4t), carries a slotted clutch member 84 which in turn cooperates with a second clutch member on the end of the operating rod for the valve 4t). Said shaft 83 is rotatably lnounted in suitable bearings provided by a spring housing 86 and within the latter, said shaft S3 has one end of a coil plate spring Q7 secured thereto, the opposite end of said spring' being secured to the housing. The shaft 83 is extended beyond the end of the housing 86 and carries a hand wheel 8S.

The arrangement is such that the springr 87 tends to rotate the shaft S3 in counter clockwise direction in Fig. 5 for closing the valve 4t). lVhen the valve is opened manually by the use of the hand-wheel 88, the linger 8l by engagement with the notched wheel 82 holds the valve open, the lever T8 being slightly overbalanced for holding the finger 81 by gravity in operative position. llfhen, however, the pan 7T begins to till with liquid fuel dripping from the main generator, the lever 'T8 will be overbalanced in the opposite direction and thus release the shaft S3 and allow it to rotate counterclockwise under the influence of the springv 87 and thus close the main valve lo and prevent further supply of fuel to either of the generators.

I claim:

1. ln a hydrocarbon burner, the combination with a main vaporizing generator of elongated form and with a substantially broad flat side at the bottom, of a smaller auxiliary generator positioned centrally beneath the main generator, means for supplying fuel to each of said generators, a burner proper consisting of two burner units located bencath said main and auxiliary generators and at either side of the auxiliary generator and adapted to project flames therefrom against the flat side of the main. generator. and means for supplying vaporized fuel admixed with air from said auxi|- iary generator to said burner proper.

2. ln a hydrocarbon burner. the combi nation with a main vaporizing generator of elongated form and semi-cylindrical cross section with the flat side thereotl at the bottom: an auxiliary generator arranged parallel with and centrally below said main generator; means for supplying fuel to both of said generators; a burner proper consisting of two similar burner units extending parallel with and located below said mam and auxiliary generators; and means for supplying vaporized fuel admixed with air from said auxiliary generator to said burner proper.

3. ln a hydrocarbon burner, the combination with a main vaporizing` generator; of an auxiliary vaporiziug generator in the form of a pipe: a burner proper comprising twin arranged laterally sepaiated slot -v ted pipes disposed below said auxiliary generator and the main generator; and means for supplying said burner proper with vaporized fuel.

4. A hydrocarbon burner adapted to be used in conjunction with a hard fuel hearing apparatus located exteriorly of said apparatus, said hydrocarbon burner including a fuel-vaporizing generator, a burner llt) nu'. u.

proper, means for conducting vaporized luel adnlixed with air to the interior of said apparatus; a easing over said generator and burner proper; and a vent pipe Vfrom said easing leading,` to the interior of said apparatus.

5. A hydrocarbon burner comprising, a base, end walls, twin slotted burner pipes extending between said end walls, an auxiliary 2( generator located above and intermediate said twin burner pipes and arranged parallel to the latter, an air mixing chamber between the delivery end of said generator and the admission end of said burner pipes, and a inain Vaporizing generator extending between said end walls and located above said auxiliary generator and the burner pipes.

ln witness that I elail'n the foregoing I have hereunto subscribed iny naine this 2e 1st day of February, 1922.

RALE [GH O. HUMPHREY. llfitness:

UNA C. GRIGSBY.

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