US1766186A - Fire grate - Google Patents

Description

.une 24, 1930. l fv, OC'NASEK 1,766,186`

FIRE GRATE Original Filed 111213.14I 1925 4 Sheets-Sheet 1 .lune 24, 1930. v. ocENAsEK 'FIRE GRATE Original Filed Feb. 14, 1925 4SheetsfSheet 4 33mg 'W26 L Y I l l i Patented' JunepzA, 1930 oonAsnKfon ,YKQN- Y.; As':serenoi3, BY mesma Assi,er"italianiiisg.''ro

Josnpn nj for LUI-1an,

0F NEW YORK, ity. j

. frm'n GRn'rE ,Appneatiqnwiea' Febfapy 414:, z19251. semi Naf-'9,1645 Renewed'november 5,1929] y invention relates itofimprovements in fire grates-on which a *Eirey maybe advam tageously. maintained for. any; purpose, but which is peculiarlyadapted for use,r in a vSteam or yhot Water boiler-.4y The :general objectl Aoffrny invention isito Vproducega fire s ,grate which is y,unusually strong in 'propon tion to its Weight-,which has an abnormally large air, 'delivery *froml beneath, Whichhas afplain top :surface which;'cany be advantageously Water eooled andadapted"t have the heatedwater serve asa feed Water heater l for the boiler if desiredfand@ Which byerea'- sonv of its :general construction v and 'particu-p larly of nits, means fordistributing a large quantity yof yair uniformlytofthe frefis adaptedto burn any fuely to advantage, and

particularly adapted ftouburn' vcheap and finely dividedfuels-riyliichf could not be 2Q burned to so good advantage on other grates.

Ineonsona-nce Withthe [idea above en pressed., I provide fa grate section which can of the grate,y seetion,ffrom `-the upper partsV ,ofy which f chambers the sheetlike openings ,t wizith-theresult'thatthe aifor .steamnsed ,extendgthrough'the top"A Wall of the grate to ,promote Y combustion .Willi'. How, 'through 'thesevral Chambers beprevented; by the;

- Walls. thereof from ieddying andk for equa-l distribution of :air ian,fd the 116661: lmformly. fte Y allanar@ ef the? grate section; and will; flow 'upwardly in yak Vmultitude "of @jets-tending to keep iwi/the, gratejjsur faceV clean, and''deliyeringz'angarnplel supply offairfbr oxygen,,tQiherefsurface, lthus pronloting` as n earlyas possible 'cor'nplete'v combustion. f The ,v arrangement noted T15 equallyY adapted lfor either -naturalFor forcedv draft and for Various kindsof fue- 1.4 Through "be used vrtoffeed the boiler or ffor other purposesg Theigratefis preferably placed at an inclinati-on 'when used, softhat-theincom-f grate` and casing.v

thernain-rbs the headers which?.

Y port them 'I-canfif'desired directa-)flow ofv Water 'which will absorb the heat froin'the grate ythus keeping it Cool, `and which lvcan@l bust-ible ypart of the fuel Vwill grayitate'to the: lower en'd of vthe grate,vv Wherefit oanbe dumped -by-'ineans of a special clifnker grate which I 'arrange' Ifor'this purpose, "andfby constructingthe grate with a series Y'of ,-hani-,

bers and yjet openings as described, arranging anfaifr chamber below the grate, and kby air 'chamber I control 'thevinfiowing airor 'steam` or ln-ixti'ire vthereof to such advantage that practioa'llj,T`j no ash-esfalfl vthrough the grate itself,g but they are ldeliverecjl,to' the cl-inler grate above noted', andthe small accumulation of matter in the air l,Chambers can 'beeasily blow-n out` as hereinafter described. It will Vbe further notedvt'hatyby the arrangement of ribs forming tl-rejair chambers on the under sidefof thev HgratefI not only acquire great uniformityofgai'rf delivery,'but the "grate is Vsltrengthened.to such an extentv that-lit is unlikely to become', Warped or distorted.. The-above advantages and others will"4 appear .more clearly4 from? 'the ldescription whichv follows.

i Reference isfto :be had to the accornpjaifiy'-iv ing drayyliigs`-fo11n1ng a' fp'artfof, this specifi f Figur-e 2' is a vlongitfifnlinal section thereof-l 4`Figure :Figui-e1 4 a' section muera@ 'f lFigure"t is alongitudinalsectionA offlie lStructure shownginllguref 4- Figure 7 is abrokenplan yiewfofthe inner, y

grate: when ythe :latter 1 Waterc'ool'epcl. v 1 ,09 kl VVFigure 8 yis V:afV broken elevation of the /header'shoivn in Figure?.

Figure V9 is a 'cross section through the Vgrate section shown in VFigure ,5. Y

g Figure'y 1 1is la -sideelevation section shownin Figure 10.

"Figure 10 isaY lan-view ot' Va sli ghtly inodl ified icormofja gratesect'ion.

of the grate Y "Figurej12`is' a cross; section `onthe line 12%12 of' Figure 10, and f" i Figure 13' is ya broken Vdetail section the linefl of Figure 10.

VAsilliistratedV in FigureV lftliegrateli's lformed ofva series-lorfrsections 10, lOa'nd 10"',and asvmanyxof these sections Vcan-be used vas is 'desirable' r The Vgrate is supported on suitable 'outer and Vinner V franies' -9 and f llfvvhich mayV belofany suitable'kind,"and

'Wherejthe' grate is'tobe v iifat'er cooled itfisv provided with headers -12and 13 whichV are supported on ledges 111 and 1:5 of the frames A9`faI1d' 112,l but vwhich may Obviously befsup- *Eachgrate vsection-' is ypreferably rec-` tangularin shape, flaton the topand pro-' vided "with "afeentral longitudinal Yrib 17'1 Withfdepending sideribs 1 8 and with longitu'dinal ribs" 19 disposed between theribs 17 and'18, andstheseribs 19 are preferablyY` i deepenedtovvards the-icenter so as to give thenr a trussA effect and thus greatly stiften-* 'ingf the Vgrate section. Y The gratev section lis alsofprovided with transverse ribs 20 which are obliquely arrangedas shown' cleiirly Vin `Figurer-3 so as to forni-aseries of diamond Vlor*seiniidiamend chambers, andthe ribs 20 can beY otherwise` arrangig'ed' .'iiiAV desiredto i fforni "the" air Achambers beneathv the grate Y andfto give thejnecessary strength, but the;

' erablebecause offease ofconstruetion.

'straight lines vdiagonally.arranged are pref-y o Il desiredthevcentral rib 1 7 may fbe iliade thinner anddeeper as shown at 15a in Fig-'f thickened; and deepened, `and fthe" diagonal '2 Vribs L2O."fniay' `:be givenincreased depth,"v as 'numerous inleg 21;, what; as Shown iin rig?,

In eonneetionvvith the grate IS haveish'owirV 'Water diverted to dow throughV the grate, .and can b eregu- V 75 Y through to supply heated Vfeed Water to the f Y by. suitabl iseV the boiler heated by the fire on the grate, and in Figure 3 l' have shown dia-grainniatically the direction ofthe Water- How.

The-'pipe 22 has a valve 23 and a ,branchA lavvater pipe .22 forsupplyingfeed water tot.

pipe 24 controlled by valvesy 25and 125m, ir-r Vranged atopposite sidesoifrthevgrate.A llhe Y through 'the line 24 'isinade latedso that Vjust siiiicientn Water yWill pass boiler!` Y' As a convenient arrangement for the passage of lWater through zthe. grate'l haveVKVV 80 the headers 13 and12, "has an Yelbovv bore 29 in .Y y

shown a pipe line 241; having sections 26 yand 26a delivering intoV and Vthe header 12 one part thereof', While'asiinilar *elbow 30 is held ina part ofthe header 13, these S5 i the grate sections 1()Q10a10;.` Thefendsof f registering with the bores 28-'-28--28? of? theelbovvbores 29- 01""30 register with the L boresQS-l-QiL and Q81?, WhichreXtend longi tudinally throughthe ribs 17 offthe grate sections, Aand the bores 28 and 28h also regis-v terrvvith the sectionsQG and a'othe head# ers.v vlt Willy be understood, ofcourse that- V there lnay'bera'greater orv less nuinber of A elbow bores inthe headers, depending on the number of sections of the grate, andfth'ese bores'byivhich the Water fioivfis led through the several central ribs ofthe grate sections iii-ay be produced in any fconvenient Way.` I

have found that a' good Way iS ,t0 hW Steelf i pipes i cast inthe headers'and "in the ngrate' ribs, and atY the 1 bores and grate bores ineetV suitable ,highv pressure joints are used tov prevent leakage,"

andv any joints suitableffor the purpose :can

be used'. Y `The headers 12 andv ii uncooled "grate sections 10d` are nsed,

it Willbe obvious that the headerszl andthe pipingconnections'will not be emp'loyedgi* points where the header and 13V can be heldin place es ineans such r as'bolt's or the like Beneath the grate is a easing forming an air chamber, andr this can be Aheld v on "the othervvise supported.` Theair chambers thusV Yformed shouldhave an airV inlet jthrouglr 1 i5 jv the'rarne'Q at the front fend thereof', v'and af suitable door can be providedlforfthis open- 1 ing.j .I also preferably arrangejvat:intervais; i f

(swinging baiies 35`v ivhich prevent 'eddying' currents g from @being vset v/upi in the 'air Y' bers, and" this arrangeiii'ent` 'infjconneetionrflow 'offairtoeve'ry part oef'thegrate. f i The grateisYV arrangedf'atV n inclination.' frein 't frontto back as shown 'clearly Fig ure 2,7end; can be usedl atvrnorina'l draft,=or;

Vair or 1 steamer bothfmayf be injected I intoY themehainbei vbeifieathV the, gr ate Y thro ughithe YOpening.3ftY Y inposition to close the opening 36. The arm 40 is provided With ,a pullvr rod 42 extending to the front of the furnace, and the rod should have a handle 43 or the like to facilitate its easy operation. When desired the side of the plate and. high pressure resisting pipes in certain of said ribs, adapted to convey a cooling medium therethrough and di-,v agonallyarranged ribs on the ,underside of said plate crossing yone .another` to lfform ka 'iengauainai strengthening ribs on the meer y plurality of substantially diamond vshaped 'v i.

air chambers. n p

In testimony Whereof,`I.have slgned `my name tothis specification this 16thvd'ay 05751 January, 1925. VACLAV OCENASEK.

rod 42 can lhe pulled, thus Vswi'nging'the member 37 from beneath the opening36,

and any accumulation oft soot or dust in the v casing 32 can bey bloWnout, and as it'drops from the opening 36, W'ill also pass through the opening 38 in the member 37. f

Opposite the inner and lo'Wer'endv of the .grate I place a clinker grate 44, and the un'- consumed ash and refuse from lthe fuel Will collect on this grate Which canbe ,dumped i When desired. To thisy end the grate 44 is 'l provided Withan axle v45 mounted in suitable supports 46, and-the axle has a crank 47 provided With a pull rod Y48 extending to `the front of the `furnace and provided Withy a handle 49.- Thus by pulling the rod the grate 44 can be dumped. v From the foregoing description it Will be seen that` I have provided a verysimple,

'strong' andy efficient grate adapted to con-v sume fuel of practically any kind to the best advantage, and furthermore a structure f which is cheap, not liable to distortion, and which can be used to great advantage as a feed Water heater whereby the double purpose is conserved of keeping thegrate cool andheating the Water. y p' Attention is called to the fact that the preferably made by castingv the grate or header around the pipe. larly advantageousv Where it is desired to use rvvater'of high pressure. Often pressures are used so high that ordinarycast ironl Would not withstand them`,.butby using high pressure-pipe in the bores, the pressure is easily withstood, and moreover the action of the ually toughened Cil external heat and internal high :pressure Wateris such that the castings bec and annealed. I'claim:- v' f' "l l. A fire grate comprising Aa platep'rovidl ing a plain top surface and having a plural-` ity of openings extending therethrough,

ribs connecting the longitudinal ribs, said diagonal ribs crossing onev another' to Yform a plurality of substantiallyl ,diamond-shaped air chambers. l j' L.;

25A fire gratecomprisingpa'jplate providi ging a,pflaintop surface and having a plural..."

ity of openings extendingf"therethrough,

omegrad- 'f v i bores of the grate and connected header are This is particui longitudinal strengtheningribs onthe under sideof said plateand diagonally arranged A so p ict

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