US1666136A - Steam-actuated air injector - Google Patents

Description

April 17, 1928. 1,666,136

' 1-. E. HARTER STEAM ACTUATED AIR INJECTOR Filed July 8. 1926 110 6 EHa-riewr;

mentioned, is the" 'pres'ent lnvention;

Patented Apr. 17, 19 2 8.

.z umrso STATES-J; gr m-Y semen, or I H V PHANY, nrorrmonn, rnnIAnA, A ooltrottaa'ron oniritnrnnh,

, 'STEAM-AGTUATED Aria, INJ CTOR; r I

I, 1,666,135; ATENT:OFFR'QEfl-J I v A plicant filed ul 8, 192s. i -Serial No;. 121,25li j lt has been determined, scientifically, that inorder. to obtain the best resultsandobtain the maximum amount of heat in the combus- 5 tlon of coal lIl furnaces that a certainamount of secondary air should beinjected over and.

in contact with the burning coal, thereby supporting the combustion inorder to ob-, tain the maximum amount of heat units therefrom and to eliminate soot and smoke,-

pthatg'is to say,-substituting the soot and smoke,"whicl1' is'ordinarily produced, for usable heat. Thereforetoovercome said ohjections, and to obtain the desirable results paramount object of my further; object is toprovide means for injecting air, under the. desired pressure and with asuitab'le carrying agent, into the combustion chamber of furnaces or the like in Y F such manner asto obtain the highest degree of efliciency and economy, i .tAnd "a further-object is to provide means foraccomplishing said results in an economicali manner. by means not a constructionwhich is, simple 'in' character, strong I and durable, in its several parts," easily operated and controlled, and which can be manufactured, installed, and sold at, a. comparatively lowprice," One way ofcarrying out, the-prlnciplesof my invention in a practical and. eflicient' therear Walls thereof. 9

manner is shownin-the accompanying draw- 1ngs,'1n wh1ch-F1gure-1 shows'my nven: tion in elevation as lnstalled inconnection With'afurnace which is shown, incentrztl vertical section taken through thefront and Figure 2 is-a centrallongitudinal,section,

taken; through, the several partsof myi-in-p vention proper showing the same] in assembled cond tion. Figure 3 is an end elevationqofthe concentric rings or cones as assembled. alone, with the parts integral therewith; Figure 4is an exterior viewi-ot' the assembled parts of my invention. Fig- 'ure -5- isxa horizontallongitudinal section of a portion of the mainior distributing nozzle the' corresponding parts shown in Fig; 4;.

assembly, "being a slight modification from And F-igure 6 is: an outsideview 'offthesteamg Similar indices denote like parts thronghf "out/the several views.)

:Inorder that the construction, the, opera.-

ition; andithe several advantages-of my in- E i s locatedgi M v ;.s

All, of said parts are -shownvime'relyftog ,3, substantially as shown 2 tov the' A, AssIeNoR T0 onovvn FUEL sAv'EnooMg be more fully understood and; v: pr edii W new t e 1 1 a d a e description thereof, in which I willjsetfforth r the, same as oomprehensivelyas I N Referring now mule) dr win s in detail Letter A:.indicates the" front wallf ovfia fil I mace, and B denotes' 'the" rearwall of the notesthe furnace-grate, the 1 same Letter. '0 denotes the top,.and D de make clear ,the'application of myv invention" j in connection therewith.v

The invent on proper includes i3; concentric r ng or cone assembly, which icon;

sists oflaplurality of conefs'hapedfri'ngs 1,

'2 and "3, wl1ich.--are of varying vdimensions I With relation. to" each other. The 'small'er:

end portion or the ring -1'is,-1ocatec1in}the" ring 2, b ut,;not Linlcontact therewith; Like wisethe' smaller end portion of the ring 2'Q'is located in therewith, v p a The ring, integrally connected with the ring 3 by" the, two, oppositely directed ribs Likewiselthe ring 2 and the, ring 1 ;the rin g' a, but isnot in c'ontact so a are connected by the ribs 5'. By the above 1 it will beseenthat the rings 1, and 3 are nested together, iyet. without contact with each. other, "there being 'Qair-intake' spaces formed therebetweenf Located concentric and flush with the larger end 'o fthe ring l'is the disc 6, shown in Fig. "3, which'is' inte grally connected with the ring 1 by the ribs 7.. jAl'l aperture 8 is :formed'through the center of the "disc 6, and it is interiorly threaded, for the "purpose hereinafter set forth. ,1 H i f The smaller end of, the 1 ring 3 terminates in aicollar 9, whiclijis offset outwardto form a shoulderat the junctureof the ring 3 with said collar 9 for the purp s h rein t re forth .,,,11 j

y The mainjnozzle assembly comprises tein-"r paratively large and hollow stem 10, one end of which fits snugly in the collar 9 and contacts with said shoulder whereby the'inside diameter of the stem 10 is equal with theji nf side diameter of the smaller, end of he, ring The stemflO isfdeta'chably; seciire gP referably wformed'f-integral withgand nozzle 11, which is flattened and formed flaring, in order to provide a comparatively long and narrow discharge slot 12.

Gonneeting h p and b ttom port on of the nozzle ll is a dividing pier 18, which is shown in Figs. 2 and 4: as diamond shape, in cross section. In some instances the pier is formed curved, as the pier 1a shown in Fig. 5, in which latter instance the nozzle is usually longer on one side than on the other, for the purpose hereinafter explained, the same being indicated bythe nozzle 16 which is shown'in Figi.

The steam-jet nozzle, shown alone in Fig. 6, consists' of three portions, whiclrare'integra'l witheach other: Thecentral disc portion 17 which is adaptedto contact flat with the disc 6; th exteriorly threaded nose 18,

which is adapted to run "into the aperture 8' I and the larger, exteriorlythreaded, stem 19 adapted to havefa' pipe fitting, as an elbow or a T- fitting, run thereon, as hereinatterexplained.

Formedcentrally and longitudinally where i is retained by threads;

"' throughsaid steam-jet nozzle iean aperture 20, Thatfportion of the aperture I is near the end of the nose"l8 being formed 20 which less diameter than isthe remainder thereof, s indicated in Fig. 2.

' Inthis instance a T-fitting 21 1s threaded onto the stem 19. Threaded onto; the second br'ancho'f the fitting 21 is an L-fitting' -22, wh ch is c nnect d vto the te m, upply pip 23', which latter in turn is connected'with a "uitable stea immaterial to-an understanding of this in ventiiin." I Where two or more of my devices are emplayed n a e ur ace a p pe o frornthe third bfanch of the fitting, 21 to the secohdfor the third device, 'so that all'rn'ay be supplied by the same pipe 23. However where only oneof my dev'icesis employed then the pipe 24; may be dispensed witlrand the third branch off'the fitting 21 should be plugged, or: the fitting 22 may be connected directly to the stem 19. a

Numeral 25 denotes a cut-off valve, where by theisteam maybe turnedon or off at will, I However in practice I usually provide a valve constructionwvhich operates automatically with the opening and closing of th fu n ce door, ut is s e al to an understanding of my present invention. In practice znydevice shouldbe disposed at an angle,'substantially as shown in'Fig. 1, being inserted through, or built into the wall "A, and directed downward and inward, whereby the ai'r'in issuing from the slot 12 will bedischarged 103 .61 the fuelE which is in the process of combustion at that time,

\Vhenever fresh 'fuel is placed'onthe fire carriedhy thegriate D then the verve 25 stan h pe e wh c w pe fi' e steam to "be discharged with considerable pply; no ho and 24 is extended force through the steam nozzle or nose 18,.

it is projectedthrough the rings successively expand and form suctions through the spaces whereby a comparatively I between the rings, large volume of air will be taken into the air discharge nozzle, and by reason of the velocity imparted by the steam it will issue from the slot 12in the form of a heavy air blanket whiclrwill cover practically all of the horizontal extent of the interior of the combustion chamber into which it is in- 'jected. i

For devices is required, in which case the air de livery nozzle'is of the shape shown in Fig. 4. But in large furnaces several ot my devices may be employed, as in a series, the same beingarranged in a horizontal-row andparallel with each other. my injectors are employed in a'turnace then the two end air delivery nozzles should be asthat shown in Figure 5, whereby a portion of the'air from each will be directed more 1 laterally, that is toward the lnner corners of the combustion chamber, thereby causing the injected air to be distributed over "a greater extent laterally of the interior of the combustion chamber. However the intermediate air delivery nozzles, that is those betweenthe two end-air nozzles will be of the" shape of that shown in Figure 4,.

For convenience of description]: have em ployed herein the word steam, underpressure, as the preferable power for carrying the secondary air into the furnace, however it is to be understood that I am not to. be limited thereto, as other carrying elements may be employed such, for instance, as 0011 pressed-air.- t

The force and the suction created by the expanding steam' will manifestly "cause out side air to be drawn in through'the larger open ends of the rings or'cones 1, 2 3, successively, and carried by theforce of the steam into the stem 10, then into the air I chamber. I

The secondary air injectedinto. and-over the fuelunder combustion 'in 'the furnace causes every part of the fuel, and the gases :1 small size furnace only one of my a usable heat,'and entirely dispensing with I smoke, thereby greatly increasing the etfi- Tosummarize: I have found by experience that my invention requires a comparatively small initial expense for installation,

' and practicallyno expense for maintenance: orrepa1rs; it is as permanent as the boller or the furnace With W hlChlt is used; it meets all fire preventive ordinance and requirev ments; it dispenses with smo-ke'and soot, and

the consequentcleaning of fines; it makes ipossible the use of a cheaper grade of fuel,

and requires a less amount of fuel to be used; it increases the draft and'causes steam to be raised more quickly; and it is adapted to be used in various types of furnaces or combustion chambers and can be installed either singlyor in multiple. I

i I desire that it be understood thatvarious changes maybe made in the "several details herein set forth Without'departing from the spirit of the invention or sacrificing any of the advantages thereof whichlare new and useful and which involve invention;

In testimony-whereof scribed my name. v r e K i 7 i1 HARTER;

my invention, what I claim "and desire to se cure by Letters-Patent of the United States, 'ciency of the :fuel and solving'the so called I I smoke nuisance.

spaced apart and integrally, connected to form air inlets between each two andflead ing from the outsideto the. interiors thereof, a steam jet nozzle concentric with said rings and adapted w direct a jet of steam through the centers of all of vsaid rings, means for desaid rings, a hollow stem connected to an-.

other one of said'rings. which is'most remote to the ring to which said nozzle is con- H nected, an air discharge nozzle extending from the outer end oflsaid stem and formed I flattened and fan-shaped horizontally witha e slot formed through-the end thereof for the dischargetheret-hrou'gh ofair, and a dividfing pier connecting the upper and the lower portions of said air discharge nozzle,

A secondary air injector, to beemployed I 1 in COIlllQOtlQIIWlth a furnace or the like, andv comprising a plurality of 'cone-shapedrmgs x 35 I have hereunto sub- 4e tachably connecting said fno'zzle- With one of.

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