US1490919A - Xwaiid - Google Patents

Description

April 2z 1924.

1,490,919 E. R. GODWARD l vAPoIZING ATTACHMENT FOR CARBURETOR .Filed Aug ze. 1921' s sheetsfsneet 1 IIJI April 22 1924.

E. R. GODWARD vAPoRIzING ATTACHMENT Fon cARUnTQRs Filed Aug. 2s. 1'921 s sheetsf-sheet 2 willi/'1115i [tra r n rvs April 22 l1,924.

E. R` GODWARD VAfOBIZING ATTACHMENT FOR CARBURETORS i Filed Ais- 26. 1921` s sheets-sheet FIG. 7

I imno, n sulijexrt of King George V of Great `intmthe engine at a high veloeitgr, b; 1y

Patented Apr. V22, 1924.

rATENTpor-Flcn lBliiElS'JJl ROBERT GOIilWABD, QF CHRISTCHURH, NEW ZEALAND.

vromzmo n'rmlcnmnn'r non eennunnrens.

Appicatlon led anni 26, 1.921. Beria In. 495,751.

Tool! whom/t may comrern.'

lie it known that I, ERNEST Bonnin' Gol Britain, residing at 140 Hereford Street, Clxretchuroh, in the Dominion of New Zeuinurl, have invented certain new und useful lml'n'ovemonte in V1 norizing AAtten-liniente iiioh the following is a pcei lisation.

.lhis invention relates to veporizers for, internal combuntion engines.v o

`The ob"e`et of the invention is to produce a vuporzer whereby the engine ie'supplied. with a uniform dryI gaseous mixture.

With thieobjectin View I produce :1. vuporizer having; spiral passa with one or more eonvolutions, thesoif paesage being designed in a manner whereby the large sur faces of the partitions between the pessugee are available for the surface eve ration and time element process. The time element (provided'by making an element wliereb the charge is compelled to travel a'eullicxently long route to completely ab Sorb the 4wet particles) is very important. It is well known that any volatile liquid requires a given time to become a, vapour or gas (the time being dese. with@ greater amount of heat and as the charge is drauligi ma ing it travel a long router-suite cated, and with great surface aree for the )vet particles to be s rendl upon, a decided time element is supp ieri which deals eliiciently with the lowy ade fuel.

I provide a so a heat element in addition to the e irully shaped pessanee which eonstitute t e surface und time element.

Theheat element is so desimed that the' various fragt-ione of wet fue absorb heet from it according to the requirements for V evaporation of each fraction, the heavier part of the fuel being; treated with the highm er temperature, and the lighter parte with a lower temperature. n i

In the drawings eeconipmiying this speoifiliation, I have ilesoriii'efl the apparatus more purtioulurly in conriiection with vertically arranged spiral passages, but so lthat the invention muy be n'iore r'louriy understood in its izroac Sense, views illustrating horizontal epuelly instructed an# flugeeof' different (lesione are uielufied. hey

are ull related, or olizu'uolzerized hy, havin'gworea of 'the entreneee or inlets `the essence of `'the invention embodied, name f ly, `the time, surface and heat elements.

In the drewingu accompanying this apeci fic-ation,

Figure 1 .ie un end elevation of the vaporizer and connectione looking rearward from radiutor end. y

F i nire E in n )ersmetive View showin veimriuer, exhnuet end part of the inlet und return pipe, with the cover yof the return pipe removed. i

Figure li is a perspeotive view showing manifold, inlet and return pipe, carburetor eide, portion of return pipe being broken away to show distance piec `und method of its communication to the manifold.

`Figiue 4- is a sectional view of the va orimer,` the sci-oiled section taken on line AWA Figure 6.

Figure 5 'is a perspective View of the scri'ill.

Figure 6 is e plan of the scroll, showing` the corrugated metal ribbon which acts as a s aeerbetweejn the platee top and bottom. bo igure 7 is e perspective View of the hot Figure 8 is a. persptive view of the hot plate.

designs which embody similar features to those contained in the design illustrated in Figure 4. i f

`Figure 1() is a view rshowing one of the partitions around the inlet pipe as used in the design illustrated in Figure 9.

Figure 12 is ay View .of oneof the arti! tions around the inlet pipe as used in t e design 'illustrated in Figure `11.

My apparatus consists of. a. vessel or rhainher comprising an outer cover 1, and une or a series of spiral partitions 2 having one or more convolutions or partial convo` lotions before reaching its maximluu dilincter 4, providing a spiral or curved pas sugo or passages 3, spaced apart by separator menne such as a narrow mrrugabed metal ril-hon 3" or other suitable formation (opV und bottom, seid` corrugated metal r1 3B or other suitable formation, Where` loonteri et the bottom of the passages 3, is in enmay Figures 9 andll` are viewa of alternativer of the apparatus, although I prefer that it be in excess of the latter areas. The

l sum of the area lof the outlet 9 of the spiral passage or correspond 1nr area to 'the area of the return 7 which communicates with the 1ntake manifold 8, or in another form the sp1- ral partitions 2 in the vessel or chamber are so arranged that the area in the passage 3 may increase from the inlet 5 to the outlet f 9, and reduce the speed of the mixture durtion stroke of t ing its progress-through the spiral passages 3. These passage outlets 9 discharge the charge into an annular space 10 surrounded titions 2, and being too heavy to remain suspended (or be carried bv the 'air passing through vthe spiral passages 3) descend'the sui-face of the partitions 2, meeting invcreased temperature (due to conduction up the partitions from the hot plate and to radiation from -hot plate) until gas is formed, in the event of the liquid fuel reaching the extreme lower edge 3A of the spiral partitions-2, where..it comes in contact with-:a hot plate 12 (which may. be

dishedwith the object of causing a further -retardation of the heavy particles by the effect of gravit .further vaporization takes place and fina ly elongated receptacles 12A projecting from the sald hot plate 12 downwardly into a hot box 13 dissipate any of the wet hydro-carbonswhich4 may reach this point.

The air which carries or conveys the wet particles of the fuel slows'up-A to a degree lthat the said wet particles which have become deposited upon the partitioned surf aces descend the partitions 2 by gravitation until the said wet particles, meeting with a gradually increasing temperature, are treated in the manner described.

- These spiral ypassages 3 are covered by a to\p plate 14, which forms a joint lfl^ with the top edges 2A ofthe said partitions'-2,y so that the charge cannot escape from the top of the spiral passages 3. The -hot plate 12 forms a joint with the bottom edges 3Aof the partitions 2. compelling the charge to traveigthe spiral or curved routeas formed by th'e'spiral or curved partitions. The hot plate 12 or base with the cone member 12B forms the top member of the heating element which comprises what may be termed a hot box 13, into which the hot exhaust gas ges 3 may approximately.

,conducting it to the plate 12 an is permitted to enter and heat the plate 142,

thus in addition to the `function ascribedY heat and to them above, thatof collecting h t ence to' partitions 2.v Insteadof exhaust gases other.

suitable heating means may be lntroduced and disposed within the said hot box to supply the heat element for the method herein described.

In fitting the vaporizer to a power unit, it is preferably fitted into. and v'made part of. or placed in close `proximity to the eX- haust ipe 15. When in proximity as indicate in Figure 4, there is a branch 15A attached and led to the bottom of the hot box 13, forming communication between the exhaust and the interiorof the hot boi:r

at 15B, Where the exhaust gases enter. and heat the under surface of the hot plate 12, and surfaces 120, of the downwardly proj ecting elongated receptacles 12^. Of course, this manner 'of connecting with the exhaust of a powerrunit is' merely illustrative, and it will be understood that if desired all the hot `exhaust gas may be caused to pass through the hotbox 13.

The upper end of the vaporizer is covered by a cap member 16` in the centre of which a joint is made with the return pipe 7, as at 16A. There are set screws 17 having their heads outsidethe cap member 16, and

their points yinside which are brought to bear against the top plate 14, by means of which a joint is formed between the top and bottom edges of the partitions 2, the plate 14, and the hot plate 12 respectively. There are'suitablel bolt mem-bers 18 to retain the. vaporizer as` a complete unit.

`The heating element thus supports the vaporizer and transmits heat to the vaporizing unit. lt is obvious that the temperature is higher at .thcbase of thc unit where it is in direct contact with the hot plate 12, thus the spiral partitions2 have a ma innun temperature at the base of the vapo# 'rizcr, and a minimum at the top; then as `it is well known that the' fractions of the hydro-carbon oil or petrol as used for internal combustion engine fuel have different degrees of volatility, and as the wet particles or heavy wet fuel descends the partition surfaces, they become further broken up by heat' transmitted from Vthe heat element, and form a gas which combines with the air current.

The heavier particles which reach the hotv plate 12 `are carried along the spiral orv curved passage in direct Contact with the vui . along thev opi hout l'roni tho exhaust iH nood to the host aulvuntngo by gcoppi ing tho nocossary hout to thriuo port ,s t uit require it. Th vary largo plate surfimo oltaiuod hy this@` iliooiiro und upon which tho mixture spreads ita, f, Moin-te Wwm'ization, Iaiiuoo rentrifurul :Lotion oxorfmi upon *the tuoi mixture` tunilu to 'lopofiit` the wet poirtioloiiy upon suoli lar-1e pluto surface, thun expos ing thol Huid writ iiiartichiu to a moving.;r ouh ront of :Lim wl'iioh tondo to msooloruto v' Doril zatiori by opwinding such wet partio to in a. thin. film over largesurfitoo wliorohy the fuoiirtion of the air current in oomhintion with thu vuryiripf hout ohliuinoil, hy conrluoiivity throuigli tho l'iaitit,iriiisii" prof mploto vaporizatiori.

i another form of tho invention (i'ihuo vtuto-fl in liiguiroo 9 and i0) where tho fipirul partition 2 may ho formed as in tho manner of n vortioal ooi-ew thread having; two or moro turrm,thoro may he ono, no shown in Figure 10, or a, multiple of thm thro und thoy muy hirvo un inoreuuingr `pitch so that they provide o gradually incroiusing area in the ,pamgm t In thisform the cover lio a. `cup ohuiiiod member, the surfacel" thereof ttin` snugly over the peripheryof the threads firming.

the partitions 2.

The hot box 13 is o cup ohapd mernliior,

of greater diameter than the cover 1.J pro viding an annular space i3^ for the exhaust gasoil. f'

lt 'will ho ur'uierstomi that io thi@ forin of thol invention the: `nzlzutrpo of :forli :io drown through t u ii t pitio to thu lower odge, 3^ ofV opn l i `roo Zi, und .from tho *o [miiempgoo 3 to tho top th of. und into tho roturu pip .it thuo n|i|mront thu u 1m iiruurou'ymto i ro timos hotw, l.

lpipgu, o hut .io drown flown direct ele-w spirol pogingen and theoutlet 9 of uuid pasyIori :it tho periphery of tho disco 2. In

igooigu the chui-gro outoro the to2), as `in l y on to tho hot pluto i2 usr shown in Figzuro 1,1,

when: it follows u oorollod pasiouge .lilr

formed in the hot pluto 12, an otpzivalont to` tho riuiroptuolo in ruoiul'ior 12, l `i,j nire l4. i

This sorollwl whirh tho the inf-lido t' passage lil is o .:hannol into t partidos of fuol flow `from the outor oligo in diroot con- `tfiotwith thohot plutou A rouiul iiuilloplaw 22? uhovo this hot plato riuniti-u the ohungo triwol out over the poriphory` of unifi round hulio, uml this bulli@ .20 iu hohl io a pouition in proximity to the Scrollrad pasion vo iu the hot piutohut o. ouiioient distance t orofromA to' allow' a free ptlosngewoy for tho evapo'rztt' 'l mit Tho pintor or dirson are oovered ,h v p pluto il, efpzivahaint to the plate 14 ilii.if-,r-otoci in Figurr 4, which forms a joint with u top (liso of tho rstaoic, tlm` diameter of `tho unifi pluto boing not greater than the iinu'iotor of the (lisos oo that tho passagewuyol.' tho charge drown from the annuiar,

spi ,o l() mirroufniliogr the diso is not con otriottul, 'Thora` `uro Het screws 17 provided. mloptod to register `with tl'ireiulod holes in tho rap mumhor lil, and screw therein so thot tho pointof tho sot Sori-W will engage ti-ug pluto 14 to impart pressure thereon,

unil reliu'np the stool: of lis-iosa in position betwoon tho top pluto ifi und thoflat projection i. of uovor l. "lho ohurgo io thon drawn into the stool( or column of the platos or lisos 2, whioh provides the surface nesoarv for n, ooiul'iloto evaporation of, the fuel, unf.` also greatly reduces the, temperature of the oho'rpgo, w'l'iioh iu then led to the outlet as ihown. y

ny nymruti'off/W'Ihe petrol is drawn tllrougrh froni the moin supply tank in any ui'iprovod way, and after passing through tho ':mhurotor 11 led through the inlet pupo 6 to tho top of tho vaporizer through u holo lil in tho cap 16 thereof, `and jointed up with u pluto 14 adopted to cover. and horrn of joint MA, with the top edgrii 2^of thu spiral partitions 2. The loto 14 is nmintainori oor ontrio with t o sorolled iurruhor, mui i ,h tho outer cover 1, by in of tot uumwu 1% which serve the .i purposo of keeping the mrolled momher rigid in. itu pluto omi forming thr. joint 711i." het 'o reforred tru with tho wrrollod rooruhriu 'pluto 14, jiuiut mijl inlut pipo littedo'prul partit mm i fllt" wut purtioloo motori upon by gravity de-` scendi the heated partitions, and in dewhereby the scending meetlwith'an increasing temperature due to conductivity of heat upward from ythe bottom ends of the partitions until they reach the maximum temperature at the hot plate 12;*thusuthe downward travel of the wet particles carries the same under the influence of constantly increasing heat are vaporized as they meet a degree of eatadequate to produce such eiect; if anyy of said lwet particles actually reach said hot-.plate 12' they are further retarded in their passage by the corrugated I metal ribbon?,B which separates the parti'- 15 tions, thusforming vcellsrwhich retard any liquid. Any remaining wet particles fall by gravity into the elongated receptacles 12A .provided in the hot plate 12. where they7 are subjected to theiaximnm heat andvaporized. The vgas t us formed is drawninto/the annular space 10 surrounding the maximum ,diameter 4 o`f the scrolled member, to the top thereof, and across the space 10^. into thereturn pipe 7 surrounding the'inlet pipe 6,. then is drawn through the said return pipe 7' to the engine. The advantage of placing the inlet pipe 6 to the vaporizer, inside the outlet pipe 7 from the vaporizer. is that the incoming charge contained in the pipe 6 being cold,'absorbs' avv certain amount of heat from the gas in the outlet pipe 7 which is thereby robbed Vof its heat, thus supplying a cool charge to the engine. The corrugated metal ribbon 6^ in the pipe 7 is supplied for the purpose' of forming a distance piece to maintain l the pipe 6 centrally disposed within the pipe 7; it also acts as heat radiators to facilitate interchange of heat between the `incoming and outgoing gas fuel.

4tures-pr the like comprising means forreceiving thefuel mixture-said receiving means having a curvilinear partitioned passage for prolonging the progress of the fuel mixture therethrough while at the same time gyraJing laterally the latter.to deposit by centrifugal action the heavier particles of unvaporined fuel on the walls of said passage. and a heat transfer means engaging the walls of said passage whereby'heat is assisted by conductivity to extend through said walls in a direction opposite to the gravitation of unvaporized fuel both on said walls and, in the'passage, the temperature varying in degrees from a maximum heat vat the bottom of said walls and pasto a minimum heat atthe top of said sagle wa ls and passage.

3. A vaporlzer as characterized in claim 2 having means for delivering t-he fuel mixture to said receiving means and means for discharging the vaporized fuel mixture from said receivin means, said delivering means and said dischargin means being disposed in intimate paral el relation so that heat f the discharged vaporized fuel mixture is exchanged to the .incoming fuel mixture iowing to said recelvlng means.

4. A vaporizer for hydrocarbon fuel mixtures or the like -comprising a casing, a

transverse partition providing a hot-plate sages leadmg outwardly from said central receiving passage with their outer ends spaced from the wall of said casing, means to form a plurality of radiating curved pasclosing 'the top sides of said curved passages, A

said hot-plate by engagement with the lower ends of said partitions serving to close the i lower sides of said curved passages and said "ntral receiving passage, said hotplate being adapted to transfer heat by conduction upwardly through said partitions, the temperature varying in degrees from a maximum heatat the bottom of said partitions and passages to a minimum heat at the top of the same, means for deliverin a fuel mixture into the upper end of said central receiving assage, and means communicating with t e upper end of said casing for discharging vaporized fuel therefrom. y

5. A vaporizer as characterized in claim 4 in which'said fuel mixture delivery means and said vaporized fuel discharge means ar disposed in intimate parallel relation so th t heat of the discharged vaporized fuel is `exchangedv to the incoming fuel mixture flowing to said receiving means.

6. A vaporizer as characterized in claim 4 in which the bottoms of said curved passages of said receiving means are provided with means in mutual engagement with said hot-plate and the bottom portions of said vertical partitions to both aid in conductingheat from the former to the latter and also for retarding the outward flow of any unvaporized .fuel which gravitates into direct contact with said hot-plate whereby its discharge from 1said passages is delayed until it is finally vaporized.'

1,490,919 l i l u 7. A vapcrizer as characterized in claim -L yand said vaporized fuel dischar means bef in which said hot-plate is provided with a ing disposed in intimate para lel relation, conical nielubcrdisposcd to project upwardso that heat of the discharged vaporized ly into said central receiving passage of fuel mixture is exchanged to the primary I said receiving means. fuel'mixture enteringth vnporizcr. 15

8. In a vaporizer for hydrocarbon fuel In witness whereof I ulix nl signature. mixtures or Atlie'lilre, means for delivering 'a ERNEST ROBERT GO WARD. `fuel mixture into said vaporizer, means or Witnesses:

discharging vaporized fuel from said vepo- MABEL MCKEEHAH,

l0 rizer, and said fuel mixture delivery means Rom'r Pm, Jr.

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