US2491324A - Rotary burner - Google Patents

Description

IN VEN TOR. CARL J. MAKI ATTORNEYS C. J. MAKI ROTARY BURNER Filed Dec.

Dec. 13, 1949 mm mm 2 m o D 0- \1| M v Patented Dec. 13, 1949 assi no o hillips ro oleum' omoanr, soon 1 poration of Delaware .sppiicationrocccmbcr 11, i945;seria1aio-..634308 a room (or. 158-118) This invention r lates to mta yburn'e svIn one o its mo cspeo flo asp ts it re ates to rotary gburners in which one. of the, gases .i-or combustion is ejected in jets from a rotating portion oi the burner and in w ich a chamber'ior di tribu ng said gas in the burn r s pr t ot dby a n se pl exposed to rad an heat f om h fl m oi flombustion n another of its more spool-fines:

pects it relates to eans for preventiiigthe burn. ns out of such nose p at i a mor speoific aspe t it r l te to the i j ct n ofsteam or oth r in r ga vapor f th purpose of cool- :ing parts of rotary burnerswhich end move heat, r

In the prior a t of rotaryrbur ers it been noted. that certain Po tions f the humor nd to e eat andl iirn out, Th s is lue pa y-lo depo tion eio rbonaoeous .mater l'iromthe as oass na thr ueht o burn rupon overheated pox: tion of theburne Such oa b nac ousdoposits reduce h. h at t ans erred irom the o erhea d port nam he o-vorheatedxpo tion mel s or burn out and he burner an no operate pr per -v have n ted th t ro ary burners of the type shown in the accompanying drawing-v that the no e plate is the portion which-overheats and b rns o t and on; which the deposit .of carbon forms. It is believed obvious that the present'in vention prevents such overheating and/or deposit of carbon.

One object of the invention is to prevent overheating of part of a rotary burner.

Another object is to prevent .depos'itsof carbon on an overheated portion of a rotary burner.

Another obiectis to-pro-vide means for supplylng ,a protective fluid to a rotary burner. I r

Numerous other objects and advantages will be apparent to those skilled in theart upon-readi g the ac p y n sp cificat on, claim, an

drawings.

. In th dra n 7 v The single figure in the drawing is e. gross sectional eievational view of a rotary burner ternthro gh Jet orifioes vmotor H rotates the burner when motor :2 nasa ai as ag ihe sthroush, and. h i o r. throug '2 may e adju d hrsh i o :4 sec red in ad usted, o iii elor but erfly out 5 shii t rhein up or e by. s p or s 5. r 1 v Arrotar burn r '-:gone a lylde ienat cl as 1 od spo ed i operr l t nr o a r qn u iio order t uti ize a m -g therethroush Rotary bu ner 11 oonsis s i r ta i g, head-8. twin e-as distributi nrm .9. thereon, and, i e i ed. f n he on a Head maybe rote h mot r 1 s o n mo n d on brack t J12 s ur d by bolt E3 to wall I. Motor II drives he adB v-.thr,ougl -i belt 14 or any. omen-Suitable driving. means. ;i,-Iowo r.-be t is may e rem ved and rotary head '8 ven-zentireirh J t ao ioriof as m aia fis ry burner shown the dr w be nineteenth it is iiref e abie t copied meth ds of constroti n r order oi dearisid ioo sproo r 'Th rbmi filkh dfi h s an extensi n -6 v i hioh rotatosin-a support ll andsuitable n -isi iotion rin s 18 and amayhe providodup ort 3 in turnsuono ted by arms =24 seoured y b lts 21 towall i. i

:Qoolin fluid inlet the 2:2 i secured to eatension by radial-arms :23 for rotation thereon-tn and, -.asshown 14 8 drawin ube :2? has ri idly m unted-the eon. drivin wheel fill.v y ion employed v v -1 A support member v:25 supports the-inlet end or cooling tube 22 and provides communication therethroughby means of conduit Zilbetweena cooling fluid supply source .(not shown) and cool!- ing tubeii.v Gosling fluid pressure is;.prrovided therathrlough and if desired suitable stuffing iboxes :iiandfi maycbe employed to prevent or substantially reduce 'ieakage of fluids.

A suitable fuel gasosu-pp'ly pipe -,(not Shown) is connected to gas inletlfi and provides fuel gas "to head 3 through the annular space formed icetween'tuhe Hand extension ;l6 r,

.Bafilewlate 31- may he providedinside vburner head 8 on the end of shaft. tube-'22 to properly distribute thecoolinz fluid which emerges from tube 22 through orifice 32. i

The left hand end of rotary burner head 8 is.

known as the nose plate 33 and this nose plate is exposed to radiant heat. If desired, nose plate 33 may be supplied with orifices 34 suitably spaced therein, but in other cases orifices 34 may be;

eliminated completely. I

Each of arms 9 has a radial passage 35 receiving gas from head 8 through opening 38 and Operation The operation of the burner is obvious. Rotary burner head 8 is rotated either by jet propulsion from jet IE or by motor II, or both.

Arms 9 may be formed as propeller blades to;

draw air from right to left through conduit 3 in wall I which flow of air may be controlledby shutter 4 if desired. Arms 9 may or may not be shaped as fans or propellers to draw air if fan blades iii are employed for the purpose. However, fan blades 10 may be eliminated completely if arms 9 are shaped as fan blades.

The gas for distribution enters through inlet '28 and passes between tubes 18 and 22 into head 8 and openings 36 from which it passes through radial tubes 35 and out jet orifices 15. Upon ignition, a large ball of flame is formed about nose plate 33 and radiant'heat from that ball of flame tends to overheat nose plate 33 and cause 'gas coming from 28 into rotary head 8 to deposit carbonaceous material on the inside of nose plate 33. Such carbonaceous material would seriously reduce the heat transfer through nose plate 33 and probably result in the ball of flame melting the nose plate.

However, as provided in the present invention, a cooling fluid, preferably steam, from a source (not shown) enters through conduits 29, 22, and 32 into the space adjacent nose plate 33. This cooling fluid has two functions. The first function is to carry heat away from nose plate 33. The second function is to blanket nose plate 33 so that combustion gases inside rotary head 8 can not reach the nose plate. These two func-v tions are aided by baiile 3| which aids in maintaining a line of demarcation between the gas and the cooling fluid, makes the cooling fiuid pass against the inside surface of nose plate 33."

The cooling fluid may escape from the space between baflie plate 3i and nose plate 33 and/or 'through openings 34. By properly balancing the gas and cooling fluid pressure, it is possible to have the cooling fluid occupy all of the space forward of plate 3| and to escape out holes 34. In

"some instances it may be preferable however,

to have a little of the cooling fluid also escape through jets I5 or to have a little of the gas also escape through holes 34,

In some instances, with suitable cooling fluids, holes 34 may be eliminated and the cooling fluid allowed to escape from the chamber forward of bafile plate 3! so as to mix with the gas and pass entirely out of jet holes I5.

Any suitable non-carbon containing gas or vapor may be employed as the cooling fluid. The term non-carbon containing is meant to contrast with the term hydrocarbon gases, which are carbon containing gases.

While a specific embodiment of my invention has been described and illustrated for purposes of explanation of the invention, it is obvious that many other embodiments will lie within the scope of the present invention and that many changes in size, proportion, and arrangement of parts, and substitutions of equivalents may be made without departing from the present invention, the scope of which is defined only in the following claim.

Having described my invention, I claim: A rotary burner comprising in combination a burner head, being hollow in at least its forward end portion; an internally concave cover plate closing the forward end of said burner head; burner arms extending radially from points on said burner head adjacent said cover plate; passage means extending from the hollow portion of said burner head outwardly through said burner arms to substantially the end of each said burher arm; outlet means extending between said passage means and the exterior of each said burner arm through the walls of said arms; a first conduit for gaseous fuel under pressure rotatably mounted in anti-friction bearings, said conduit being rigidly connected to the rear end of said burner head so as to form a gas-tight seal and extending coaxially therethrough to said hollow head portion; a second conduit for non-carbon forming cooling gas under a relatively higher pressure than said fuel, smaller in diameter than said first conduit, extending longitudinally through said first conduit and said hollow head portion into the concavity of said cover plate, said second conduit being rigidly spaced from and secured to the walls of said first conduit so as to form an annular passage therebetween; and an annular bafile member, smaller in diameter than the adjacent diameter of said cover plate, rigidly aifixed to the end of said second conduit within said cover plate so as to provide communication between said second conduit and a chamber formed within said cover plate through the central opening in said baflie and so as to provide communication between said chamber within said cover plate and the hollow head portion in back of said bafile only through the annular space between the periphery of said bafiie and the wall of said cover plate. CARL J. MAKI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,105,290 Mueller July 28, 1914 V 2,112,888 Greenawalt Apr. 5, 1938 2,177,245 Dennis Oct, 24, 1939 2,276,960 Graham Mar. 17, 1942 2,327,512 Dennis Aug. 24, 1943 2,344,936 Zink Mar. 21,1944

2,351,421 Gibson June 13, 1944

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