US1376979A - Muffler-burner - Google Patents

Description

R. L. STROBEL.

MUFFLER BURNER.

APPLICATION FILED MAY 2. 1919.

Patented May 3, 1921.

3 SHEETS-SHEET I.

VV NTOR ATTORNEY R. L. STROBEL.

MUFFLER BURNER.

APP LICATION FILED MAY 2, 1919.

1 76,979. Pa nted May 3, 1921.

3 SHEETS-SHEET 3.

lwmmumu h WITNESSES A TTORNE Y ,UNl TE-D STATES PATENT D-FFICE.

ROGER I sfibRoBEn 03 Ease HELENA, MONTANA; ASSIGNOIB, TO AMERICAN SMELTING AND REFINING COMPANY, A CORPORATION or NEW JERSEY.

Mar anna-BURNER.

I Specification of Letters Patent; V =Pate 1fed May 19 21 Application filed May 2, 1919. Serial no. 294525 2; a

T 0 all whom it may concern i 7 Be it known that I, Roenn L. STR BE a citizen of the United States,-.a-nd resident of East Helena, in the county of Lewis and Clark and State of Montana, have invented certain new and useful Improvements in Muflier-Burners; of which the following is a specification. v

My invention relates to an ignition de vice for'firing the charge of ore on a moving grate, such as is found in a Dwight-Lloyd sintering machine and constitutes an improvement in the similar device disclosed in the patent to John F. Austin, No. 1,179,390, granted April 18 1916.

It 1s usual in such the top of the moving charge to be fired and eject burning fuel into the mulfleinsuch a manner that the down draft of air through the charge on such machines will draw the flames down onto the charge to ignite the same.

Difliculty has been experienced in effecttions and which will effect this ignition eco- Accord'ngly, another objectof the m..

I tion istoprovide a device of the class described in which the exposedparts of the metal are minimized and protected as far as possible from the action of the heat.

Among the other objects of the'invention is to provide an ignition device formed largely. of separate blocks which can be readily replaced in the supporting frame. which cannot accidentally drop from the constructions to position an open bottom muflle or hood across,

frame and which will a gas tight fit along the upper sides while permitting the expanslon and contraction'incidental to Various other objects and advantages of the invention will be in part obvious from an inspectionof the accompanying drawings and in part will be more fully set forth in the following-particular descriptionof one form ofmechanism embodying my inven tion, and the invention also consists in certain' new and novel features of construction and combination of parts hereinafter set forth andclaimed. Referring to the accompanying draw- 1ngs: y V

Figure 1 is a plan view lookingdow-n upon a preferred embodiment of the inven tion and with oneendb'roken awayto show internal construction 1 Fig. 2is a view in side elevation: of the device shown in Fig. 1;

Fig' 3 is a longitudinal taken centrally through the device shown in Figs. 1 and2g H Fig. t-ris an endelevational View at the left handside or burner end ofthe device shown in the preceding figures;

such structures when in activeuse.

sectional view- Fig. 5 is a transverse sectional view taken;

on theline 5'5 of'Fig. 2-;

Fig. 6 is an end elevational view at the right hand end of the deviceshown in Figs.

1and3;and v J Figs. 7, 8 and 9 are each perspective views of one element of the several archsections,

taken in order from left to right. in their corresponding positionsan. the supporting frame; Fig. 7 belng one of the two left hand mediate arch sections and Fig. 9,being one of the right hand end arch sections.

The device is made up mainly of a fire. block construction formed of arch blocks, such as are shown in' Figs. 7 8 and 9 assem, bled in a supporting -metal frame-. The,

to form a skeleton frame. .The'ribs are arch shaped asshown morefpartieu-larly in Figs. A'to 6 and are each formedof a pair arch sections; Fig; 8 being one of theinterof angle irons bent to-form an upstanding" side 12, a top part 13 and an upwardly projecting extension 14. These angle irons are each disposed with a flange 15 projecting outwardly and adjacent flanges about opposite sides of a gusset plate 16 and fastened together by means of through bolts 17.

These outwardly extending parts provide, in addition to their reinforcing functions, ex-

. tensive areas of surface which act as heat ends of the ribs.

distributing areas tendingto distribute the heat which contacts with the lower, exposed The ribs are connected along opposite sides by means of deep plates 18 forming side sills fastened to the inner flanges 19 of the ribs by means of bolts 20. The ribs are also fastened in position adj acent the inner portions of the parts 13 by of one pair of ribs to the next adjacent ex.-

tensions, thus assisting the center sill to hold the upper parts of the ribs in place. The open skeleton frame thus formed has the side sills fixed in position relative to 7 each other and provides a rigid support .for

7' the arched construction of fire resisting marior of the device.

terial hereinafter described. This metallic skeleton frame also provides the support for a J-shaped bracket 24 at the left or burner end of the device. This bracket is utilized for the purpose of supporting a burneror other fuel discharging nozzle common in such devices for the purpose of discharging combustion-supporting fuel into the inte- The device is provided with a fuel conducting chamber extending lengthwise thereof and which can be divided into an open bottom combustion chamber 25 and a closed bottom burner containing compartment 26. The compartment 26 is formed in a burner section 27 confined within the outlines of the two end arch ribs at the left of the device. These ribs project downwardly below the other ribs and are each provided on the inner flanges with L- plates 28 constituting supports for a floor plate 29 bridging the space between the opposite sides 12 of these ribs. The lower ends of these ribs are tied together by a pair of connecting rods 30. The fire resisting part of the device containing the chamber 25 and compartment 26 is formed of three pairs of. arch blocks, each slightly different from the others. The first pair at the left end of the device is made up of two of the blocks shown in Fig. 7 and coact to form the sides and top of the burner containing section 27. This compartment, as will be noted from Fig. 1, is outlined on opposite sides by upstanding walls 31 and is of progressively greater cross-sectional area from the inlet end 32 toward the opposite or inner end.

through the upper portion of the structure is avoided. The intermediate archstructure is formed of a pair of the arch blocks 36 shown in Fig. '8 and the right end arch structure is similarly formed of a pair of the arch blocks 37 shown in Fig.9.

The upper arched wall constituting the crown of the'assembled arch structure converges downwardly from the flame inlet end 26 of the combustion chamber 25 toward the opposite end 39. This opposite end is substantially closed by a depending wall 40 ex-' cept for an outlet 41 of small dimension ex tending slightly above the plane of the bottom edge 42 of'the blocks 36 and 37. The

lower edges of the intermediate and right end arch sections'are provided with broad flat surfaces 43 disposed in a single plane so that the right hand portion of the structure may be positioned relatively close to the grate on the sintering machine shown in dotted outline in Fig. 3. This construction provides a relatively wide and long outlet which extends entirely across, the moving grate of the sintering machine and due'to the tapered shape of the combustion chamber tends to cause an even distribution of flame throughout the entire length of the opening. The bottom of the compartment is closed bymeans of a pair of flat blocks 44 positioned on the plate 29 fitted between the two left end ribs and engaging the lower face 45 of the arch blocks at the left end of the device.

In operation, the device is hung above the sintering machine as is usual in such operation and With a suitable burner in the burner containing chamber, the burner is started inactive operation, so as to eject burning fuel into thecombustionrchamber. The fuel contacting with the inclined wall of the chamber is reflected downon top of the moving charge of ore igniting the charge as is usual in such operations' By means of a device of this character an eflicient combustion is attained with a .re-' sulting saving in fuel and but little heat is lost as radiation has beenreduced to a minimum and the jointed structure minimizes leaks. The ignition of the charge as it is passed under the muffler is uniform, taking onto the moving charge.

igsrepre place entirely across the pallet and especially igniting that part of the charge which heat within the combustion chamber or to the heat from the fired charge and even what little" metal there is exposed at the lower end of the rib is connected with an extensive radiating'surface thus insu'ringa longv life to the nietalpart of the structure; Even should one of the arch sections break for. any reason, the broken parts are retained'in the frames due to the fit between the side sills and these It is practically impossible for the side sillsto burn away and'so lon tion. The upper edge of the side sillswhich constitute the supports for the blocks are removed from the lower side of the blocks and are thus removed from the heating action of both the combustion chamber and from thefired charge on the sintering machine. 7 As the blocks can be readily demounted, new sections can be inserted in place in the frame as desired and even should part of the frame'burn-it is easy to replace the damaged part with but little interruption to the continued use of the device.-

claim 1. In adeviceof the class described, a fire resisting, open bottom arch construction having oppositely disposed upstanding walls, each of said walls provided on the outer sides thereof with a' recess forming overhanging shoulders on opposite-sides of the arch construction, said shoulders adapted to rest on oppositely disposed sill elements of a supporting frame whereby the arch construction can be suspended in position.

2. In a device of the class described, a fire resisting, open-bottom arch construction out lining the upper portion of a combustion. chamber with the rise thereof decreasing from one end toward the opposite end and means for having the construction in position. 1

I 8. In a device of the class described, a fire resisting, open-bottom arch construction outlining the'upper portion of a combustion chamber with the rise thereof decreasing from'one end toward the opposite end and having a cross" sectional area intermediate the ends greater than the cross-sectional area adjacent the ends.

4. In a device of the class described, a fire resisting, open-bottom arch construction outlining the upper portion of a combustion chamber with the rise thereof decreasing. from one end toward the oppositeend and having." a cross-sectional area intermediate" the ends greater than the cross-sectional.

said sections: being exposed and disposed parts willnot fall as the side sills last the fire blocks will be eld in posiaving thus described my invention, I

area adjacent the ends afid inea-nsfor mtgf in theconstruotion in osition. v V

5; In ade'viee of'the ol assdescribed,- the; combination of a plurality of" arch sectlioiis arrangedin pairs interlocking along their" crowns and with one pair interlocking with the next adjacent pairat "their contiguous ends thereby to=fforni open bottoni arch construction, the lower. edges on each *ofjsubstantially in a single plane whereby the open-bottom of the arch oons'tniction: may be ositioned olose to thetop'of a. travelingj member; A

6i a devioe of theolass: described,

openebottoniarch construction having a combustion therein exposed" down wardly through'the open-bottom; said ohanr her; having; a' combustion tuel onterin end and said; c'l iainher decreasing" the cross=sec tional' area: from said .fuel entering end toward the opposite end. I

7. In a device 'offt'he class de's'cribegh an open-bottom arch"- construction having a combustion chamber therein exposed down, wardly through the open-bottom, said charm ber having a combustion-fuel-entering end: and' said chamber decreasing the cross-sec? tional area from said? fuel enterin end-to'-" ward the opposite" endvand 'a epehding; arched "wall forsubstan tiallyclosing said opposite end.

8. An igniting 'devicenin'c'luding an open v end burner containing" sect on "closedi along its bottom and a combustion chamber sec tion opening from the burner section to receive theflame from the burner therein and: exposed along its bottom to permit'the' flame to ignite substances positioned below said; combustion chamber, the upper wall of said" combustion chamber being incl-ineddownwardly from the burner section endtoward' the opposite end thereof whereby the-flames impinging against said wall are deflected thereby downwardly through the open- 9'. i niting devi egprovided" with a longitudinally extending combustion Chain ber open along its b tt m side andiprovided at one end with a flame receiving inlet, said chamber having'a greater rise at the inlet than at the opposite" end whereby, the clear-f ance f r-the burning isfdecreased'as the gases" are passed through the chambe thus ftelld ing'to insure a uniform distributio'nof flame. throughout the lengthg'oflfthe open bottom. 10. An i niting" device; rovided with a longitudinally extending combustion chant" b'er open along'its'bott'om sideand. provided at one end 'with a flainereceiving inlet, the cross-sectional area of said chamber pro gressively decreasing from the inlet; end

toward the opposite end whereby tending to insure a uniform distribution 'o'f'fflam'e along thelength of-said open bOttQIllf,Said chamber closing theunderside of the same to form a burner containing compartment at one endhaving a greater rise at the inlet than at the opposite end whereby the clearance for the burning is decreased as the gases are passed through the chamber thus tending to insure a uniform distribution of flame throughout the length of the open bottom.

11. In a sintering device having a chamber extending lengthwise thereof, one end of said chambercprovided with a bottom for closing the underside of the same toform a burner containing compartment at one end of said chamber and the part of the chamber beyond said compartment being exposed on its underside to permit flames in the chamber to passtherefrom and ignite substances positioned beneath theopen bottom part, theouter end of said compartment providedwith an opening permitting access to the interior ofthe burnercontaining compartment and a frame engaging the igniting device above the bottom thereof for supporting the same in the sintering machine.

,12. In a sintering device having a chamber 7 extending lengthwise thereof, one end of said chamber provided with a bottomcfor of said chamber and the part of the chamber beyond-said compartment being exposed on :its undersideto permit flames in the chamber to pass therefrom and ignite substances positioned beneath the open bottom part, the outer end of said compartment provided with an opening permittingaccess to the interior of the burner containing 'compart: ment anda frame engaging the igniting de vice above the bottom thereof for supporting the same in the sintering machine, said burner containing compartment increaslng in span from said opening toward theflame inlet of the open bottom portion of the chamber.

13. In a sintering device having a chamber extending lengthwise thereof, one end of said chamber provided with. a bottom for,

closing the underside of the same to; form a burner containing compartment at one end of said chamber and the part of the chamber beyond said compartmentbeingexposed on its underside to'permitflames in the ,chamber to pass therefrom and ignite substances positioned beneath the open bottom part, .the, outer end of said, compartment provided with an opening permitting access to the interior of the'burner containing compartment andqa frame engaging the igniting device above the bottom thereof for supporting the same in the sinteringfma'chine, saidburner containing compartment increasing in" span from said opening toward the flame inlet of the open bottom portion of the chamber, and

said open bottom portion of thechamber de= creaslng in rise from said flame 'inlet end toward the opposite end.

14. In a device of the class described, the

combination with a hanging frame comprising a plurality of longitudinally spaced apart arch ribs, and a pair of longitudinally extending and transversely spaced apart s de sills connecting the inner sides of: said ribs, of arch sections fitted between said side sills and provided withshoulders spacedfrom the bottom of said sections positioned to rest on said sills, said sections coacting to form an open bottom combustion chamber spaced from said hanging, frame.

15. In a device of the class described, the

combination with a supporting frame in-I eluding ,a pair of inverted U-shaped arch ribs and side sills connecting adjacent sides of eachrib above the lower ends thereof,

arch sections fitted within said ribs, support-1 ed above'the bottom thereof on saidside sills and coacting to form a combustion space closed along its top and open through its bottom side. I p

' 16. In a device of the class described, the combinationof a supporting frame provided with means for hanging the same in place, a

on said sills and contacting along theircrowns, said sections coacting to form a combustion space and acting to protect the frame from the heat in said space.

18. In a device of the class described, the combination of a supporting frame including longitudinally disposed side sills fixed relative to each other in spaced apart position, an arch construction fitted between and supported by said side sills,said construction forming a combustion chamber provided with an open bottom and said construction closed along its crown whereby burning;

gases in said chamber are caused to move therefrom downwardly out through sald bottom end andout of contact with said sills; f

,19. In a device. of the class described, the

combination with a supporting frame in eluding a pair of inverted U-shaped arch 1 ribs and side vsills connecting adjacent sides of each rib above the. lower ends thereof, arch sections fitted within said ribs, support ed above the bottom thereof on said side sills and coacting to form a combustion space closed along its top and floor blocks separate from the arch section fitted between and sup.-

ported by said ribs and closing the bottom of said combustion space;

7 opening.

20. In a device of the class described, the combination of an igniting device formed of fire resisting material and provided with a large heat discharging areas and spaced from said bottom opening to remove the same from flames discharged through said 21. In a deviceof the class described, the combination with a skeleton metal frame, of a block construction fitted within said frame and having a combustion chamber therein with an opening through the bottom thereof, said construction including a plurality of pairs of interlocking blocks of fire resisting material, the blocks of each pair locked in position by said frame against an outward separating movement. ,1

22. In a device of the class described, the combination with a skeleton metal frame, of a block construction fitted within-said frame and having a combustion chamber therein with an opening through the bottom thereof, said construction including a plurality of pairs of interloclnng blocks of fire resisting material,the blocks of each pair locked in position by said frame against an outward separating movement and all parts of the frame which act-to support the blocks forming the opening being positioned above the plane of the openmg.

Signed at Helena in the county of Lewis and Clark and State of Montana this 18th day of April,'A. D. 1919. I

' ROGER L. STROBEL.

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