US2192996A - Fuel burner - Google Patents

Description

2 Sheets-Sheet l R. A. FENZL FUEL BURNER Filed Oct. 1l, 1955 March 12, 1940.

March l2, R A FENZL 2,192,996

FUEL BURNER Filed Oct. 1l, 1935 2 Sheets-Sheet 2 Patented Mar. `12,A 1940 l UNITEDSTATES ffrATsNT OFFICE BURNER Rudolph A. Fenzl, Houston, Tex. Applicationroembr 11,1935, serial No. 44,513

, Q Qlaims. T-This inventionrelates to a fuel'burner. l An object of theinvention is to provide a burner of the character described specially 'adapted to utilize either liquid or gaseous fuel, and by the i :.5 use of which, the fuel may be atomized and mixed with steam, air, or other similarfluidunder a pressure higher than the-pressure of the `furnace where the processof combustion takes place.

`Another Objectis .to provide a bur-ner of `the character described `which may be easilyinstalled and 'quickly'removed and dismantled and which has a.wide range offcapacities for varying heat I `requirements by yvarying thepressures of the fuel 4 vv.and of the steam,'a`ir,yor otherfluid to be mixed =therewith.1 v f `A still further, and novel feature ofthe invenf I-tion resides in the'p'rovision ofa burner of the character described-requiring only low pressures to insure steady'ope'ration, thus minimizing vibrav2 0 tion during the normal operation of the burner.

`1 A still further `object ofthe invention is to 5 provide a burner ef thecl'laracter described which :is offsuchconstruction thatfthe fuelwill be thoroughly atomized and mixed with the steam,

air, or other oxidizing agent `befor'ethe mixture f v"enters the furnace.` l

, It is a furtherfobject of this invention to' provide a` burner having a novel type of discharge l nozzle provided with outwardly flared ydischarge channels forthe delivery of ytheV atomizing ,agent 'and'.bores or ducts-leading from the` fuel channel and leading into lsaid diverging channels whereby thev fuel is caused Vto' be broken up into minute 35, particles and thoroughly mixed with the oxidizing A still `further object is' to provide a burner of 40 the character described embodying a stationary manifold to which the fuel` pipe and the steam a pipe may be anchored, and a separate, or detachable manifold clamped to the stationary manifold fand `forming part of the burner sof` that the atomizv ,45` ingagent and the fuel `cankpasfs fromlthe stationary manifold to the movable `manifold withandatomizing agent and forced out of the ope/ n ends* of the divergingj channels in combustible;r

Fig. 1 showsa longitudinal sectional View of the l burner.` l

Fig. 2 shows a nozzle :end view. Fig. 3 is an inner endy view of the deector. Fig. 4 shows a cross-sectionalview taken on line 4-4 of Fig.'l, and Fig. 5 shows a longitudinal sectional View taken on the line 5-5 of Fig. `1. l

Referring nowk more particularly to the drawings wherein like numerals `of reference designate similar parts in each of thefgures, the numeral r I. designates the stationary, manifold and the .numeral 2. designates the lmovable manifold. 'I'hese` manifolds are substantially cylindrical in `their external contour. There is an inverted U- 15 shaped yoke 3 which embraces the movable mamf fold andwhich isformed with a clamp collar 4 r`which has a threaded connection with, and surrounds, the stationary manifold I. A clamp screw .5 is .threaded through thecross-bar of the yoke andits inner end bears against the opposing ,end of the movable manifold 2 shown in Fig. 1, and'this screw may be turned by a grip member 6. The abutting parts of the manifolds are provided, Aone with annular groovesas,l, and the-other with annular ribs, as 8,-whi`eh t'into said grooves, and annular gaskets 9 are provided between these intertting parts so as to v form tight joints between them. AThe manifolds may be relatively adjusted, ,as desired, by loosening the screw 5@ or the manifold 2 may be removed for cleansing or replacements. `A handley I0 is provided on the manifold`2 for convenience in handling it. The numeral II designates thelfuel supply pipe which l is connected into the end of the stationary manij fold `l andthe fuel may pass from the fuel supply the `pipe, through the axialv bore I2 of the stationary manifold I. 'Ihe movable manifold 2 has also a central bore I3 which is co-axial with the bore I2, but of slightly larger diameter vand within the bore I2, there is a cylindrical strainer I4 which 'is aligned with the bore I2. This strainer extends from end to end of the bore I3 and the fuel is forcedto pass through it whereby any, clogging particles will be strained out. Y

In the manifolds I and 2, respectively, are' the annular chambers I5, I6. The atomizing agent such as steam, air, or the like, may enter the chamber lfthrough the inlet pipe I'I, and may pass thence through the channels I8into the 50 chamber I6. Thereis a tubular outer jacket or shell I9, one end of which is anchored to the movable manifold `2 and communicates with the 1 chamber I6. `Arranged concentrically within this shell and spaced from it, there is aninner fuel 55 and whose outer'su'rfaces fit closely against the' flared inner face 22 of the gland 2| so as to provide outwardly diverging channels 25. noted from an inspection of Fig. 1 that the face is tubular,- and'fleadingflfromfthepassageway 23 thereof, there are the radially extendingitducts 29 arranged aroundyther'deector,=z and leading from the borei'it intofthe ehannelsZ; t Inuse the atcmizing agent such asvstearnor. air;-.un`clervpres sure relatively higher than that of the furnace fis suppliedthrough the pipe il into the chamber l5 channels iS and' passes thence throughlthe jacket or shield f. i 9 andv ontA through" the :"flared.V chanlnels 25.. l.. v

' Thefuel is supplied under pressure higher than v v that in' the furnace-through the supply,` pipe Il screen "illand thence' out into the bore i3 and throughthefuel pipef where itis divided and` passes throughl thefsrnallv ductsf29 into: theV outwardly flared channels 25 where the fuel is entrained with the yatomizing agent in-said channels any foreign objects 1in the fuelwill. behs'creen'ed v out. They atomizing agent lpasses.throu'ghthe bore vZi'l and through .the channels 25 at 'a high velocity,jbut since `said channels `251'are graduallyfenlargedtoward their discharge endsthe velocity decreases somewhat. lThe bores'lZ .for

the fuel enter the'channels 25/as nearthe small ends of lthese i'last-mentioned channels. practical so thatthe'atomizing `agent passing through i the channels 25 willi-sweep by the'iouterliends particles and become. thoroughly lmixed with it,

It will'be channels 25, thus further breaking up the fuel into finely divided particles which become further mingled with the atomizing agent and the velocity of the mixture will be somewhat reduced and will thus leave the channels 25 at a somewhat 5 lower velocity and in a thoroughly combustible state.

The drawings and description disclose what is lnow considered to be a preferred form of the invention ,by .Way of illustration only, `while the :broadL-principleof the invention will bedened by the appended claims.

-- What I claim is:

' l. In a fluid burner a nozzle manifold having a,v 22 diverges at a greater. angle than the external?v` surface 2t of the deflector so that said channels 25 gradually increaseoutwardly inwidth as 'well' as"l in thickness.k The innerfendsfof-thefchannelsl an annular chamber around the bore and having a channelfextending through the manifold and 'terminating-. :inrsaid chamber, la jacket connected to the manifold and communicating with the chamber," an inner pipe positioned Within the jacket ,andi connected Lto thefmanifcld land Acornadapted `to be maintainedfthereiniby. said seccnd manifold.

. 2..;111, a fluid burner atnozzle manifold having a bore extending into :the manifold,;`andzh'aving an jannularhzchamber. around the :bore and havingcio j channels extending through the manifold and .terminating in saidec'hamber, a jacket connected Y to the' manifold and.y communicatingwith the and passes thence"through:thev borev IZintof the chamber, f an` inner pipe, positicnedwithin, the jacket and connected `to the manifold'and Acom-55% municating withl said bore, 4a second vmanifold 1. releasaloly` secured -to .the nozzlej manifolduand i havingpassages adaptedto align Withsaid bore and the other manifold having grooves to receive y said ribsuto .maintain the.,:manifoldsY inf' aligned vvrelationship. l K Y 4 l 4 S'LIn' a fluid burner a nozzlemanifold having aigri;

" bore extending into the manifold,l and having an y annular'chamberaroun'd the'fbore and having, a

'c'hanneli'extending through the manifold and terminatingin said chamber; a jacket 4connected to "the manifold and communicating vwith thegjc f'foldand'communicating with said bore, a second v I'nanifold'releasaloly'secured"to the nozzle manilfoldfanda screen: fitted in the'bore and adapted K tegel-maintained thereinwbysaid second mani-11155- and the mixturevwill-.gradually expandJinthe RUDLPHA. FENZL.'

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