US1670819A

US1670819A - Ledoe

Info

Publication number: US1670819A
Authority: US
Publication date: 1928-05-22
Anticipated expiration: 1945-05-22

Description

May 22, 192s, 1,670,819

W, L. MORRIS ET AL 'FUELIGNITER Filed sept. 11. 1922 Fur'e, l

F'gure 6 @www Patented May 122,

unirse srArEs Partnr former..

WILLIAM L. Monnrsaxn WILLIAMYX. acorn, vor' omesso, ILLINoIs, aasre'aroiatsl ro amera on;l snrmca'rn, AN assocurzon comrosnn or c. r. :Maca-an,r L. IL nur- Lnnen, WILLIAM L. mouais, am) WILLIAM x. acorn.

FUEL Iemna.

Application led September 11, 1,922. i Serial No. 587,386.

' This invention relates to the ignition device of a furnace for a fluid, liquid, or granulated fuel, althoufrh of course, it may. be-

used wherever app icable. Among the objects of the invention are: to ignite the fuel electrically; to dispose the igniter outv of the direct path-of the vfuel when ignited; and

to provide means for'pre-heating the 'fuel electrically. AOther objects Will appear hereinafter.

In the accompanying drawings, Fig. 1 is a vertical section and Fig. 2 is a sectional front View illustrating an igniter constructed in accordance with the principles of this invention; Fig. 3 is a vertical section and Fig. 4 is a sectional front view of another form of igniter; F igs. 5 and 6 are vertical and plan sections respectively of another igniter out of the main flow of fuel; Fig. 7 illustrates another type of igniter at the end of the iiow of the fuel, and therefore out of the directv path thereof.

One of the principal objects of the present invention is to provide an igniter electrically operated which is out of the direct flow of the fuel when ignited, so that the igniter will not. he subject to the direct action of .the fuel 'for rapid oxidation and destruction, but will bc located in the path of stray or eddy currents whereby the fuel will be ignited by contact with the igniter when it 1s hot or incandescent.

As shown in Figs. 1 and 2, a fuel or door plate 1 of a furnace 2 is formed with a projecting trough 3 at the bottom substantially semi-circular in cross section and with a flange 4 at the top Jcofsupport a refractory 5. The trough 3 has ribs 6 to supportvthe refractory which is also formed with a trough-like projection 7, the ribs forming openings or air 'lues 8 between them. A burner 9 has an .adjustable cap 11 and burner is inserted through the plate y1 and extends into an opening 10 in the refractory.

ported by the refractory 14. The terminals This adjustable cap 11 is provided to reg.

registers 2O for regulating the air through these ports. Ports 21 about the top of the refractory are controlled by a movable register plate 22 and the ports 9 formed by the ribs 6 are controlled by a movable register plate 23 for admitting air to the furnace. In this construction the flowing fuel or the flame 13 passes the gniter coil 15 entirely' and only the eddying or stray currents come linto engagement with the igniter coil.

The troughof the refractory 5 is dis osed to drain any drips baclr to the igniter if thev igniter has failed to light the fuel. In Figs. 3 and 4, another construction is shown with the igniter out of the direct flow of the fuel; e

a plate 24 supports a refractory `25 which has an inwardly projecting trough 26, the burner 27 has an outer register 28 for control'- ling the admission of air. Extending through the refractory are conductor bolts 17 which are connected to the terminals of the ignition coil 29`by hooking the loose.

ends of the coil over the bolts and tightening the bolts in place. This coil 29 is attached to the back of the refractory 30 slightly in advance of lthe burner 27, the re ractory bein held in place by guide lips 31 formed in t e inner surface of the refractory 25. In this construction the interior path of the flame 31 passes by the 1igniter coil, only thestray 'and eddying currents coming in Contact therewith. Below the igniter refractory 30 is a passage 32 which ermits any drippings inthetrough 26l to ow back' to the igniter in case the fuel passing has not become ignited.

In the construction shown by Figs. 5 and 6, a burner 33 is located at one side of a e furnace S11-with an igniter coil 35 dis osed in a refractory 36 directly opposite the urner but out of the direct path of any ame or fuel from the nozzle. In this vcase the refractor 36 has a vertical o ening in which the co' is seated with con uctor terminals 37 extending therefrom to the outside of the furnace.y A. .heating ,eoi1 38..1 1ay also sur;

roundthe. burner 33, 'and'lfhgcoil' rn'iay bq: connected in Series with the ignition "co1l35' by mcansof conductors 3S), 40 and 47;' In' 1a''b'u-rne` y means',A 'ofy a circularaJel-cctrical ,.col; advance Jo tj-the' said .meansy lnitgsurron-nding the construction shown by .y 42 'is' at onesi'deof 'a'ffurnace'lt and admits a How of fuel thereto with anliflnition eoil`f 44 extendingthrough the wall of the ,fur-1 nace and supported by a refractory tube 45 inserted from the outside ofthe furnace.

In this case thc ignition device is at `the end of' the traveloflhe gases and therefore out of the direct or flowing Vlineof f-uelor n all ofl theabove constructionsthe ig-y nitiondeviee is .out of the-path of thewlame. and will sufl'er nodeteriorating,defect due.. to the direct aotionthereof.- The fuel is. ignited by the stray or eddycurrents of fuel,

and in the ease' of` the constructions shown in Fgsl and 3', the liquid. drippings mayy actually come in Contact with the coils .and

become ignited b .v thcni. i, lt is obijious that the igniter-may be variously placed without ,departing .fromthey spirit and scope ofthis invention.

`We claim: ,l 1.- The combination with..fuc.ly feedingy rnieans, of` anelectrical igniter surrouudineP but not in the d1rectpathy ol :the fuel, andy insulating. means for ,the ignlterwhich. also shields .the igniter. from direct Contact with `the {lowinggstreamoffuel., n. 2. They combination with fuelfeeding means, of anelectricalcoil igniter extending entirelyaround the 'direct path of. the fuel but not init, and insulating means therefor and for shielding the coilf-romndirect con-f` tact withthe stream of fuel either `when igf` nited or not ignited.; i

3. The combination ,of fuelfeeding means,4

nozzle, of a circular igniting; coil in fro'ntjof` the .nozzle and surrounding the fuel fivliich flows lfrom the nozzle, fand insu y ngjlfineans for supporting the coil outof thedirect path ot'i'ucl from y,the nozzles;v y "I l The combination with ajfuel` yfeeding nozzle., of, a circulanelectriealf gniter outv of but surroundingthe `d`ircct`1iathoffuel from` theynozzle', and air admit'tingl ine n'Sfor cool ing.theigniter(A 1 v' V` 9L The combination'fiyitl .fuel-peeing nozzle, of -anxeleetrical coil., igniter." in :adi Vance of lthe nozzleandgout of s'urro"undy ingr the'direct patho fuebtherefrormfan electrical heatingrfcoil ysurrfoiin'ding ,the noz-l zle to pre-heat the fuel,` and'l aira'drnitlting means for' coolingv the coils', and lfor supply.; ing air to aid the combustion ,of the fuel.

y WiLLif/lM:legni()afasie.V -WILLIAMJQeQOlfHe 1