US1387877A - Oil-burner - Google Patents

Description

E. L. WOOLLEY.

on BURNER. APPLICATION FILED NOV- I0, I9i9.

Patented Aug. 16, 1921.

PATE NT omer.;

- e.: L. wooLLEY. or PRovInENoE, Buona ISLAND.

ora-Bumeran.

1387,87?. I Specification or To all whom t may'conce'm:

Be it known that I, ERNEST L. WooLLnY, asubject of the King of Great Britain, residing at Providence, in the county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Oil- Burners, of which the following is -a specication.

My .invention relates to liquid-atomizers and more particularly to oil-burners for atomizing fuel-oilA and injecting it into the combustion-chamber of a furnace by mechanical action, without the use of compressed air or steam.

One object of my improvement is to provide a simplified form of burner comprising but two parts, which are economical to manufacture and easy to assemble with veryl 11ttle machine work andv fitting. l

Another object of the improvement 1s to provide a burner which requires no setting or adjustment when once in place.

A still further object of the improvement is to provide va burner which may be easily removed for cleaning and readily assembled again without requiring expert attention.

Various other objects of the improvement will appear from the description of the construction and method of operatlon of the device as fully set forth in the following specification, illustrated by the accompanying drawings, in which like reference characters designate like parts. In the draw- 1n s:

igure 1 is a sectional view taken 1n a plane coincident with the axis of the burner and illustrating the feed-pipe to which it 1s attached;

Fig. 2, a plan view of the burner-tip;

Fig. 3, a transverse, sectional view of the nozzle of the burner showing the fuel-ducts leading therethrough; and

Fig. 4, an axial, sectional view of the same taken on the line w-fv of Flg. 3.

Referring first to Fig. 1, 2 designates the main feed-pipe through which the oil or other liquid fuel is delivered from its source, said pipe being usually arranged to project into Athe combustion-chamber of the furnace and being provided with suitable valves to control the flow of thev oil under pressure. At

- its inner end the pipe 2 is exteriorly threaded to receive a ca`3 which constitutes the tip of the burner. he ca 3 may be of cylindrical shape, but is pre erably hexagonal on its sides as shown mgFig. 2, or it may be Np. ascuas.

part Icylindrical and' part hexagonal, to provide for its convenient application to, and

the feed-pipe 2 with an ordi- Lettersletnt. Patented Aug'. 16, 1921. Anuman mea November 1o, i919. serial glug' at either side. The outer, flaring end 7 of the discharge-opening 4 is illustrated in Fig. las being somewhat larger in diameter than that of the inner end 6, the conformation of fine the shape of the spray emitted from the burner, and being variable by substituting diii'erent typesy of tips in accordance'wlth diierent conditions of operation.

U Seated within theI interior of the cap or tlp 3, abutting its end wall and held against the end of the feed-pipe 2, is a cylindrical, disk-like plug 8 which constitutes the spraying-nozzle or atomizer of the burner. The plug 8 1s provided with a central, cylindical recess or oil-chamber 9- which is closed at one end by the wall 10 of the plug, while its opposite, open end is adapted to' register with the inner, flared end 6 of the opening 4 in the cap 3.v Leading into the oil-chamber 9 are oil-ducts 11 formed by holes drilled throu h the periphery of the plug 8 tangentia with the cylindrical wall of the chamber. Any convenient number of these ducts 11 may be y usual number as il ustratedY in Fig. 3. Communicating with the ducts 11 are lateral inlet-openings 12 drilled throu h the inner, flat side of the plug 8 at a shght distance from its periphery. When the nozzle or .atomizer 8 is assembled within the cap 3,

'this delivery end of the tip 3 serving to deproved device, its method of operation .will

next be explained:

TheA burner is assembled on the feed-pipe 2 by simply setting the nozzle-plug or atomizer 8 against the en d of the pipe and screwing the cap 3 onto the threads.

or 'ca 3 is screwed into place it will force the p ug or disk 8 snugly against the end of the pipe 2 andvhold itin fixed position with As the tip x the oil-chamber 9 registering with the inner,

conical end 6 of the discharge-opening 4.

f regulated by Thel end of the pipe 2 will thus be closed .by the plug 8, except for the relatively small holes 12 leadin into the ducts 1'1. lWhen the oil or other` 'quid fuel is forced through the ipe 2 under pressure it will be caused to ow through the openings 12 into the ducts 11, and thence will be delivered into the4 chamber 9 in a plurality of streams which spurt tangentiall to the cylindrical walls of the chamber. his action causes the oil to be whirled around the chamber 9 with a gyrator motion whereby it is ejected out through t e orifice 4 in a vfine spray, the fuel being atomized as it is emitted from the cap 3 and spread out into a funnel-like jet, as.

the conical wall 7 of the opening`4. By substitutin t pes, as regards the ischarge-opening 7, t e. angle and spread of the spray may be varied as required.

It will -be observed that my improved burner comprises only two essential elements: the nozzle or plu 8 and the tip or cap 3. The nozzle 8 is o extremely simple structure, consistin of a lozenge-shaped disk having an axia hole drilled part way throu h its flat side, with the smaller oilduct rill-holes leading thereinto. This element of the device may be manufactured at relatively small cost, the disks being produced in quantities from round rod and nished in a lathe after which they may be easily drilled in a drill-press of usual type. The cap or tip 3 is likewise of a structure to render it easy and cheap to manufacture from blanks cut from hexaxgonal rod or shaped in a screw-machine. ery little maf chining is necessary for this piece, the operations of drilling and tapping its bore and drilling and counterboring the end orice being very simple and easily and uickly accomplished by the usual metho s employed on screw-machines.

It is to be particularly noted that only one threading or tapping operation is required on the whole burner and, particularly, that there is no finishin and iitting required be' tween its parts. e plug or disk 8 ma -be left unfinished on its periphery and the ore in the cap 3 made large enough to provide a slight clearance around its sides; The plug will thus fit the cap loosely, but nevertheless it will be held ti htly in position against the end of the fee -pipe 2 when the call) is screwed snugly onto the pipe.`

twill also be observed that he parts of the burner do not require anyy setting or adjustment to apply them-to use. They ma be assembled on the feed-pipe by the ordinary pipe-fitter or other inexpert laborer and when once in dplace cannot get out of order or become eranged. Likewise, the burner is easy to take apart for cleaning and may be reassembled again with the use of a wrench without danger of damage or `oil' ducts in the plu caps of dierent v misarrangement plug or atomizer 8 has been reinoved it is very easily cleaned with a wire or other pointed instrument. For this urpose the are ma e -strai ht, without crooks or ben s, so that the cleaning Atool may be readily inserted through the The wire or other tool is simplyl pushed through the holes 11 from the outside to force any obstruction or gummed oil into the central chamber 9, from which it may be readily scra 12 ma also as easily cleaned by inserting the wire through them. v

The burner cap or tlils, bein made from standard or stock bla may manufactured so cheapl that various styles can be furnished at s ight expense the diii'erent types varying in the shape ot their delivery openings to provide for different spread and angll of thel flame prbduced by the spray. y im roved device is th/us much more economica in usethan the usualtype of burners having a more com licated structure and arrangement;l and rthermore, its simplicity makes for -hi her eiof the parts.. After the *A away; and the lateral holes I i ciency of operation and greater urability in use.

I am aware that it is old in the art to employ an oil-burner having an atomizer provided with a central chamber with oil ducts leading tangentially thereinto. I do not claim this structure broadly, therefore, but onl the herein described improvement which consists essentially in making the burner in two parts, and in so designing its elements that they may7 be manufactured by simple machining operations whereby to reduce the cost; and'whereof the parts may be assembled without fitting, finishing or adjnstment, while being easily removable for cleaning. v

What I claim and wish to secure by Letters Patent is:

1. A two-part oil-burner for attachment to a fuel feed-pipe comprising a cap adapted to be ap lied to the end of the pipe, said cap forme with a contracted discharge opening at its end, and a disk-like -plug litted within the cap` to be held thereby against the end o y. to form a connection between the feed-pipe and the central recess of the lug.

2. In anoil-burner for attac ment to feedpipes having threaded ends, the combination with a cap having a threaded bore fitted to the threads on the pipe and a contracted discharge opening provided with conical walls at its opposite sides, of a cylin- 'iio the pipe, said plug n formed with a central cylindrical recess coin-v drical plug-fitted to the bore of the cap to adapt it to be held thereby a ainst the end of the feed-pipe, ,said .plug ormed with a central, cylindrical recess registering with the inner conical end of the discharge openthrough the inner flat side of the plug into the oil-ducts.

3. A fuel oil burner, comprising a barrelv adapted to be connected to a fuel supply, a cap secured to the forward end of said barrel and provided with a nozzle opening the inner portion of which forms a rearwardly flaring conical throat, and an atomizin or disrupting member consisting of a dis interposed between the capl and the front face of the barrelrsaid ydisk having a central circular recess in its'front face the outer periphery of which is substantially coincident with the periphery of the base of said conical throat, and having ducts or grooves extending tangentiallyjloutward from said recess and in the same plane therewith,and passages extending through the disk to connect the outer yends of said ducts with the bore of the barrel. Y In testimony whereof I aiiix my signature.

- ERNEST L. VVQOLLEY.

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