DE1962978A1 - Burners for burning liquid fuel - Google Patents

Description

Heinrich Franz Wallnöfer
5771 Kirkeby-Steristrup, Denmark

Burners for burning liquid fuel

DLü Lri'irifiunK applies to a burner for burning liquid fuel;, tuff, bj ^ .oihicr;.; for * ceramics "Uefen and other i'c-ii"> L \ iti ■ viov in the T.-mporat-ur about the Zürid temperatur den iii-tnii :: loi'i \ '. s Lifigt., and from represent the kind that da ν fuel nm eiiiv-i ·; l.uft.jt r-.iiii in rsini-m I.uftfiUa-ung ^ kanaL, in the form of a ;, '; . Fi (hro; / f: r '"f" - iubt · is · DFII Kouki-il a in Brenntir angebrachtoü Broiin i: f often guide iUtii ^r i bt.

'iin r: ι ■■■ --- i iLlyl'Aii-'W -._ ■■ iUtd ι; 1 ■ - .: ι. 'Anna> p, i: _·;? -.- .; y-o'rbi'xiiinuri ^ de .; fir-mi · -; f.! 'fr; .u,: r-: it 1. -n, üiu-üj d.-.- r Br.Hinat - ^ ff ^ o foln yle. where ^ l ■ h: - r.:t ) ■:> t // rl.-n, and dbr · ;;, r '<- · ti.Lhw lint! «απ frtthor d- ^ rur' ^ - : Lü, t,

DOfiö > nf ι in: »

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that the fuel is initially sprayed from a fuel nozzle or is sucked out, after which the droplets are sprayed onto the inner surface of a vortex chamber or a vortex tube ν / earth, where they form a fuel film, and by adding this to the mouth of the vortex tube is reached by a rapidly rotating air stream is captured and atomized.

The fuel is thereby in a, due to the centrifugal force, very wide angle thrown out of the burner mouth. In ceramic ovens, such as brick kilns, this causes the following disadvantages: The burner mouth must be deep in the hot hole or even be attached in the combustion chamber itself in order to avoid that the heating hole tube is sprayed on and melts. It will the burner mouth is exposed to great heat and the fuel is constantly burning (coking). The consequence of this is bad Burning function and a lot of cleaning work. The burner mouth must be continuously cooled with a lot of air, and this increases fuel consumption and also damages the material to be fired due to the oxidizing effect. Even if the burner mouth is attached deep in the HeLzloch and close to the firing material, the flame, due to the principle with the rapidly rotating air stream, is so wide that it touches the material to be fired directly and damaged in the process.

There are also known various burners which mechanically pure, or electro-mechanically produced pulses fuel sp- into the combustion chamber without air through fine ^nozzles. Sen This showed the disadvantages that the fuel does not burn intensely and thus black smoke gases and Rasa form, which discolor the material to be fired and pollute the air, and; In addition, the fuel ignites too late without direct air admixture in the combustion chamber and thus the material closest to the burner mouth becomes weak, the furthest becomes strong; .- ΐ.- · -,. -.p-

ito aim d ;; r invention is an air-fuel br-aimer, which

ΠΟ982 ~ 87Ϊ191

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is particularly suitable inr keranrische furnaces, and a fil ei clmiässi | causes ie and complete atomization of the fuel and has a long and slender flame. Another one? The aim is to be able to regulate the length and breadth of the π flame and to avoid the loss of fuel ep in the burner mouth "?] / I ru.

The objectives described are achieved with the burner ¹ according to the invention if the atomizer body has the shape of a bottle which tapers evenly in the direction of flow, and this atomizer body by means of a shaft "which ends a small piece in the fuel pipe inside without it :

but washed 1 it: ssen, is attached to the fuel pipe, and in its opposite end a recess is made so that the atomizer body ends like a collar.

In this version there is an adjustable amount of air between the inside of the burner tube and the fuel tube running in the axis of the burner tube, and these Air washes around the atomizer screwed into the end of the fuel tube, whereby it is due to the shape of the atomizer and the resulting narrowing of the flow cross-section is accelerated. The accelerated air flow causes the fuel that flows out onto the surface * of the atomizer to be distributed there as a thin film, which is torn from the sharp edge at the atomizer end and atomized into the combustion chamber. Because of the convergent and The air flow running parallel to the atomizer jacket between the burner tube and the lower part of the atomizer maintains the fine Fuel-air mixture also when flowing out of the burner mouth a good speed and an acute angle, which also makes the flame slim and adjustable in length will. Therefore, the burner mouth can be retracted a good distance in the heating hole tube and therefore removed from the combustion chamber be, whereby the mouth is not appreciably warm and

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19G2978 H.

at least not ro is called βγ? is because;? o thin coking of the fuel it takes place. In order to further reduce the heat influence from the furnace lid, the; Burner muzzle nocli applied an insulating layer. IJIc-Fe ro against heat, shelled mouth requires germ-r air cooling, and when adjusting the amount of air for dir-Zerrt ^ exercise and combustion of the ρ fuel substances, ο no taillight needs to be taken to cool the burner ignition, which is why de] ' Breniv-r such a very economical] I work.

φ ■ The invention is shown below with reference to drawings explained. It shows:

1 shows a length 11 of the Zorstäuberkörperr; to the Insertion in the burner according to the invention,

Fig. Ia-Iο cross sections through the atomizing body different places,

2 shows a longitudinal section through the atomization zone

dev ^c ; Burner with screwed-in atomizer body,

2a-2c cross sections through the burner according to FIG. 2,

3 shows a longitudinal section through another embodiment of the atomizer body according to the invention,

3a shows the same atomizer body seen from above,

Fig. 4 shows one in a heating hole in the oven ceiling

set burner according to the invention,

4a shows a detailed section through the heating hole and combustion chamber.

In the embodiment shown, the burner has an air duct 1, the last piece of which is ^{conically narrowed towards the mouth 2 ', 2 ", 2! Tf} . The jacket of this constriction is surrounded by an insulating layer 4. Coaxial to the air duct 1 is located in FIG This is a fuel tube i>, in the free end of which an atomizer body is screwed, as shown in Fig. 1. The fuel tube is surrounded by an air compensation duct 3, which is held coaxially to the fuel tube 5 by means of welded spacers 7. This

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Luftausgluich..kaiin 1 Ln Form ^ lu; -ü pipes;.: Is again by means of Di st arvzst üek -η ή axial luim Li'ft duct 1 content on,

UnLmmt 9c and 9d, and then tapered in the region 9f ': the Zerstäuhungskörper 0 (FLg, 1) has the form of a _Flasch: that the Ln ¹ Li: römungs direction zunärhrt.. This Zertitäuberkörper begins with a shaft 9a threaded in the fuel pipe ^r> screwed · wild. On the surface of the shaft run parallel grooves ^: -> b, dio a ^ t ück on a neck 9c fortsotiv.n, and then iai .t increasing circumference of the body with |

9d from £ lü: h ii, Di, -iiu Li il.-n 9b- direct the fuel from the interior dtJvS Brennstnr. t'rohroe horau ;; raif the surface of the body 9. The drawing body w'i.-hsL aunnst rom shaft is up to about a third of an ik-velvet length each bottle-shaped and begins in it, cloth pat-; Ll ei " to rejuvenate from Lau found Brönnerrohr. This Ϋ: rjün ^ un. ·: Runs gLciehiua ^ oig up to three quarters of its des -uut.i vn»> ■ b-- _: i ^! _: > I, At lie ^^ - r point 91 has four atomizers; iiiütiHi- nooii a di-ruiieter 'run about three quarters of its gr-sit m D'.trchm ^ j.-jerij bei ve, her Kerstauberkorpur i:; t an the;.;? r M-Il'- 9i i / inkel r'e lit ^ ur ¹ Ach ^ e cut through. At the cut surface i ^: t / on its circumference slightly conical to ί.ηη ·; .η ririv VurticfiUij, = w .-, ». ■; ■:; nart, so that the · body'-r here ¹ 1. ra ^ enformii ¹ ; -.u lt., and iu 1 ν Kruiaflache dieiV.; i · ^

V> .: rt i efung 9h .iu - m -y i. i üdriscli; Höh runt ·, 9g with Uei bark in front · in front: .jfc-tien. Γη lius «. j; (r: .wiiide can.: in * 'rrlan; / H'unestück "1: a screwed vf'-i-den, dm :. ', / Li, -? n K, -; j_- -1; tumpf lucgebildet it-t, whose broad ?; End "· UTR Üodc-nflache h pajü and a ^ ipfen with Vx-.winde has, and d ^. Jiien -mdoreo Isnd- same Woei :: e au-. i ■ is formed v / ie iii>; ΚίρΙίΠψ, ι ", -.-. 'U !«. taubi-rkoi'pera at 9t',. thus with eiritu ¹ VerM.eFuiir, and uin r i-.hrun; ', with. * k - // in -l · ·, Here we can rt: iri - !!' ..- ipruch ^ nd -;: -, Vi ι iiif ·, -nm _r ', te; tu ei. ^C H. eini »; eS'hr ^: aubt wt: r» i (ii, W'iicii;·; v / iv! d ^f -; M! iii »ni; ■. i u -m V- -r 1 Ui ^ .- rungr'atü'k ym 7 -r 'langt, ι r, i / ^ rd,;, · buna, wol · · .-' = λ _{: χ} · ϊάμ-Λ .. ^ - -. '. \ j- · les Giiode: i · ι »ιι -.- ο VIhI f'du ^ ier' Will, I ';.:; d! Κ ·· * ·: ■' Γ. iVi." λ ·: Ι ti ί; tr: i ste-heii d m \ through f-iino 1: 1. ine -plr · -: ■■ : rir »- hl.- if. · - > cm n ^: i li>; tfo lyuiid; i limb.

UO ⁵ Ji! 'i \ / Il O

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962978

The atomizer body can also have a shape that deviates from the embodiment described. He can after the screw-in shaft 9 ^? a (Fi, - ?. 3-3a) immediately with the same diameter bent inside as the air equalization pipe 1 ends, so that .from the jacket of the air mixing pipe -.- s ~ around the jacket of the atomizer 9 ^? b a stepless, not unbroken transition arises. The atomizer circumference can easily assume the direction of flow, odti · but run parallel, -and then after about a third of its total length from ^ cha for h-. _: r converge parallel to the running burner tube taper 9% and then continue as described earlier. In the variant that is distorted at the transition from the air equalization pipe to the atomizer 9'b, there is no vacuum because of the similar air cross-section, and the air from the air equalization channel becomes redundant and in this case it can be shut off. E-: but also Li know the apex circular ring area of the Zt, -rfit: 'over;.: 9 "b, which closes the air from the air equalization ccUial ^: r, zuvi ο (Kl' several holes 3 ^r in At a slight angle to the axis ·. · Of the. ■■. Atomizer. After their union 3 ^f a in the axis then a common, equally large or attva -:. ·· larger hole leads through the axis of the Atomizer and E & i.uo anacliL ios ende steps from the outlet and ends in a straight line or- slightly divergent. For the oil outlet from the fuel pipe on the atomizer surface then grooves run in the shaft surface fiaraLLal ^ on the axis, which obliquely after nuts on the surface dt- Instead of the outer open ri! .i, the zorcitäuberüchaft can hold a bore in its axis: from which four or more smaller Zv / e bores 5'a diagonally right after the shaft lead to aiws-ti on the atomizer jacket.

ULt; In Fig. K orsichtlir-h, L; t the burner in t-lrit-m Heifisloch 14 in the Ofenclecko 15 angtbrivdn, - :: - o that the mouth remains rom Brennruitii ϊ-nt / t'ernt. At the Bronnf-rtei L across the deck ;? are located dn · Anrclilüftae for Brennet '-. tf 10 and air IL ₃ Dar Brenner has a ye it 1. i ·. hen, r <ichtv-; incl ig aur Auhsu ring? -brought air- =

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1902078

am-eh] usstu1 r-en and is closed at the top with a screw cap ·· p <-n. This cover has a through hole in the middle di '. the fuel pipe leads. This is on the ceiling] by means of a ineimnverseljr.? Exercise J 3 attached. When opening this screw connection can dar? Fuel tube axially, displaced and also in In the direction of the PiVi] es P ", the entire; i'ur / iinminhanging prenner insert 3-5-3-9 lowered or raised will.

Due to the various setting options of the atomizer · = body 9 allows the free passage of air between the atomizer] '- " body and the surrounding conical air tube 2 annoyed when lifting it t and can be reduced in size when swiveling. This will make the Air speed, the amount of air, the spray angle of the air-fuel mixture and thus regulates the height and width of the flame. Another setting option is that remove up to three links 9k-9-k-9ni from the atomizer body can.

The fuel pipe and thus the atomizer body can also be lowered so far that the atomizer body with seiru-r entire length protrudes from the burner mouth, and the three scratches ß, which sit at the lower end of the air equalization tube 3, and whose outer edges run parallel to the inside of the burner tube outlet 2, hit the burner mouth and by means of Rotate to scrape off any fuel contamination.

If the fuel is very impure, or if the air supply fails, the burner mouth can become clogged. These In such a case, it can be cleaned with the scrapers S as described without having to dismantle the burner.

The burner according to the invention, in which mainly intensive, fine atomization and acute spray angle of the fuel-air mixture value is placed on low air volume, works as follows:

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Through the fuel Kuführr- 'hr' - "(Ij g ,?) ΨΛ rd the fuel to the .shaft 9a of the Prennstol""1.Y.ei"dust; ro leads, and the fuel through here di n grooves 9'bsw "through the holes ^r ß ^t n to the Oberflächt: the Z ^^ täuberkörpor *. rather the Lu ft connection piece 11 (I ^r ig I ₁ -] is pressed air in the burner tube where it is distributed and Luftführungi pipe 1 and air flows equalization channel 3 'for burner face ⁱ Arn flacchenhalsförrnig incipient ^atomizer;. ereint ri eh. the air from the air compensation channel 3 again with the outer air flow. The air from the air compensation channel mainly prevents a vacuum from forming at the end of the fuel pipe and distributes the fuel flowing out of the grooves as a thin fi 3 in In the other embodiment of the atomizer body (FIG. 3) the air is pressed through the bores in the atomizer body, combines in the central bore in the axis of the atomizer body and penetrates the end as a thin jet at high speed The oil film, propelled and distributed on the jacket of the atomizer by the air, is then partly released on the first stage of the atomizer riss'-n, atomized by the air flow and mixed with air and sprayed into the combustion chamber in the shape of a cone. Another part of the fuel is at d'r: transferred member 9k and from its edge is again a part of the fuel ^v ora air current entrained and dusted into the combustion chamber and a part of t-9 transferred to the member. Part of this link 91 is again atomized into the combustion chamber and the greatly reduced remainder is transferred to link 9m, from whose Kant? it is torn off, atomized and transferred to the furnace. The thin air jet coming out of the hole in the axis of the atomizer at high speed mainly serves to prevent a possible concentration of the fuel after leaving the edges of the atomizer jacket when the burner is in operation with very little air, and also to prevent the conical fuel jet to atomize from the inside.

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The fact that the air duct and the air duct 9e to? M taper conically and parallel to one another in the direction of flow, and that the air flow transports the fuel around happens and still there. ·, ε dusted when the air-fuel mixture is enveloped, t — acts, "uaur, the grain of the mixture ^., from;. becomes extremely thin and long.

The fM'fiudurii. ': Int not only on the bH.v-.hri level and on the drawing inclined ^ Aa; :: fühi'Uiig;, form begi-i-nst, fiyr Lufbführungc ~ canal Z' ^% Lanit - δ As. at its outlet directed into the F-it f-space

f; did "tl; .. niö" .- h syLIndrisch 7erlauf> in, want au-.:h the atomizer body « λ

pe-r i 'iiii after deai li.rreichea r-ö-i.nc; 3 largest circumference in Sylindi'isch! "Ind. U1 ft.-n. in di ^ st'iii case also di-- · Verlängerungsgli & dei '' /, y" l ^Lndrj: .--- h, but in übrir: eu the tlelrhen principle ηaoh v / ie »τΙηιγ

BAt)

Claims (1)

PATENT CLAIMS lJ A burner for burning liquid fuel, mainly for ceramic and other kilns, in which the temperature exceeds the ignition temperature of the fuel, and of the type that the fuel is atomized by an air stream in an air duct in the form of a pipe, which is coaxial with this a mounted in the burner fuel pipe surrounds, and where sitting in the air guide channel as a connection to the fuel pipe, a sprayer body, characterized ge Ic e η η - ζ ei seframe that the sprayer body has the shape of a bottle 9 which uniformly tapers in the direction of flow, and that Atomizer body by means of a shaft 9a, which ends a small piece in the fuel pipe 5 inside, but is attached to the fuel pipe 5 without closing it, and in its opposite end a recess 9g is made so that the atomizer body ends like a collar. 2, A burner according to claim 1 with a conically tapering air duct j geke η η ζ eic ■ h η et that the atomizer body is shaped like a bottle neck at the "end facing the fuel pipe, and evenly merges into a truncated cone in the direction of flow," the bottom of which has a conically inwardly directed recess, 3. A burner according to claim 1 - 2, characterized _to ek en η, that the atomizer body has a bore in the recessed ^{bottom circular surface for receiving the pin 0 of} a surätzlri chen k '-' gelr.tumpff-shaped atomizer body, whose free end in is designed in the same way as the end section of the atomizer body. ' 4 »A burner according to claim 1 ~ 3 _} characterized by an air equalization channel that connects the fuel pipe SADORiGfNAL surrounds coaxially, and shortly after the air connection socket on the Burner tube begins and at the same height as the fuel tube end ends- « 5. Am burner according to claim 4, characterized in that g e k e η η be c h η e 1. that the atomizer body in the apex traveling to the fuel pipe ^ with a circular shoulder ends, from which obliquely to the axis. Lead air holes, which is located in a central hole in the axis of the atomizer unite that also through the axis of the additional frustoconical Atomizer body continues. * 6. A burner according to claim 5, characterized in that the atomizer body at the apex by means of A pin with an external thread is screwed into the end of the fuel pipe is, and as a fuel channel through the axis of the pin there is a hole that can still be easily inserted into the atomizer goes into it, and from there continues in several branch bores obliquely outwards onto the atomizer jacket. 7. A burner according to claims 1-6, characterized by a clamping device, the one in the air duct allows axial and vertical displacement of the atomizer body. ' BATH ORIGINAL