US1662270A - Oil burner with air-whirling means - Google Patents

Description

March 13, 41928.

Af R. JEPsoN OL BURNER WITH AIR WHIRLING MEANS Filed March 7, 192.5

Patented Mar.- 13, 1928.-

UNITED STATES f y 1,662,270 PATENT oFFlcE.

ARTHUR R. JEPSON, F MINNEAPOLIS, MINNESOTA Application mea nar-cn 7, 1925'. serial italians,

This invention relates to an oil burner and while the invention is applicable to burners.

I l chamber, means for supplying oil to the bottom thereof, means for supplying air to the central and bottom part ot said chamber, and means for giving such air a whirling motion, together with means for supplying air about the sides of said combustion chamber.

It is more specifically an object of this invention to provide an oilA burner comprising a cylindrical fire pot'having an opening at its central bottom portion for the admission of air, means for giving this air a whirling motion, said fire pot having an annular channel about said opening to which oil is supplied and said fire pot having a perforated wall through which air is also supplied.

These and other objects and advantages of the invention will be fully setforth inthe following description made in connection with the accompanying drawings in which like reference characters refer to the Same 85 parts throughout the different views' and in which,

Fig. 1 is a top plan view of the burner, a certain portion being broken away and another portion shown in horizontal section;

and Fig. 2 is 'a vertical section through the burner taken on line 2-2 of Fig. 1.

Referring to the drawings, the device comprises a shell 3 having anfopen lower end and adapted to rest upon the grate bars 4 of a burner. While the shell 3 may be made of various forms, in the embodiment of the invention illustrated, the same is shown as cylindrical in shape and said shell will be held in place by some suitable material 5 placed on the grate bars, which material may be fire clay, asbestos packing, or similar material. The shell 3 has a supporting ring 3a spaced inwardly from its wall from which arms 3b extend to the wall,

spaces 3 thus being formed between arms 3". -The shell 3 is provided with a V-shaped grooveat its upper edge in which is supported the lower edge of a cylindrical shell 6, -said edge fitting in the groove in the shell 3. A burner section 7, shown as cylindrical in form, rests upon the ring 3, said ring being rabbeted to receive the section 7 so that said section is held in place on said E ring. The section 7 has a cup-shaped portion 7a disposed centrally thereof at its lower end, the sides of which are formed with openings 7, a flange 7C ot' comparatively small height extending around the edge of the member 7a. The cup portion 7a has an open upper end from which a passage 7I extends. The passage 7 1 has a shoulder formed therein on which is supportedl a member 8.

'hile this member may be variously formed,

in the embodiment of the invention illus trated, the same is shown as foi-med ot' sheet metal and as having a plurality of inclined or helically disposed vanes 8El extending radially, slits or openings 81 thus being formed between said vanes. A flange 7 C of small height surrounds thel passage 7 and an annular channel or groove 7 f is formed in the section 7 outwardly of the {iange 7e. The section 7 has a tapped opening 7g at one side extending from channel 7f. with which communi- Cates Aanoil supply pipe 9 extending down- 1 wardly throughaspace 3 and through the grate bars 4. A drain pipe 10 extends down-l wardly centrally of the cup portion 7a and 'communicates 4with the bottom of said portion. The portion is also provided with a V- shaped groove at its upper outer edge on which rests a similarly shaped loweredge of a cylindrical member 11, which, with the section 7, forms the combustion chamber or firepot of the burner. The member 11 has its wallfprovided with a multiplicity oit' openings 11a communicating with the passage between member 11 and the shell 6., A cover plate 12l is provided having a depending flange fitting about the shell 6 and extending over the member 11 a short dist-ance inwardly of its upper edge, said cover 12 having a central opening therein.

In operation, the fuel oil will be supplied under gravity or pressure through the .pipe

' 9. and the same will liow into the channel 7 f.

The members 7 and 11 will be preliminarily 'heated by priming or burning of fuel therein in some manner and when the oil enters the heated burner the same will be vaporized. Air will be supplied between the grate bars tand will pass throughvthe opening 7b in the ortion 7EL and upwardly through the mem er 8. As the air passes through the member 8 and between the inclined or helical blades thereof it will be given a whirling motion, as indicated by the arrows in Fig. 1. The vapor rising from the oil in the member 7 will be encountered by this whirling column of air and will be effectively mixed therewith. Air will also pass through the openings 3, as indicated by the arrows in Fig. 2, and this air will pass into the member 1l through the openings lla in the sides thereof. This air will also be efficiently mixed with the vapor formed in the member 7 and there will be, in effect, a multiplicity of jets of air directed into this vapor. The vapor thus formed is encountered both at the center and at the periphery of the burner by moving air and a very perfect and efficient combustible mixture is formed. The mixture will be ignited and the flame will rise from the fire pot through the opening in the cover 12. If for any reason there should be a surplus of oil the same will collect in the cup-shaped portion 7a within the flange 7 c and the same will be drained through the pipe l0 which preferably will be connected with a shut-off mechanism for the oil (not shown).

From the above description it is seen that applicanthas provided a. simple and efficient oil burner having -means for producing a very efficient mixture of the fuel vapor and the air supplied thereto. The vapor `formed in the burner is, as stated, efciently brought in contact with the air, both at the periphery of the combustion chamber' or fire pot and at the center thereof, the central supply of air being given a whirling motion so that the vapor will be efliciently mixedk therewith. The'burner, owing to the efficient mixture provided will be very economical of oil, and

practically-.perfect combustin is secured.

The device is simple, easily made and assembled and the same is ver easily taken apart when desired for cleaning or repairs. The device is simple and inexpensive in construction. 'The same has been amply demonstrated in actual practice and found to be very successful and efficient.

It will, of course, be understood, that various changes may be made in the form, details, arrangement and proportion of the parts without departing from the scope of applicants invention, which, generally stated, consists in a device capable of accomplishing the objects above set forth, in the novel parts and combinations of parts disclosed and defined in the appended claim.

lVhat is claimed is:

An oil burner having in combination, a cylindrical shell adapted to rest on the grate bars of a furnace-having a supporting means inward of its wall, a bottom fire pot section resting on said supporting means comprising a cup-shaped lower central portion having openings through its sides, said section having a central opening above said cup-shaped portion for the passage of air, means in said latter opening for giving said air a whirling motion, said section having an annular channel surrounding said last mentioned means adapted to receive oil, a pipe for supplying oil to said channel, a cylindrical shell forming-the upper tire pot section supported on said bottom section having a multiplicity of apertures through the wall thereof, a shell supported on said first mentioned shell and of substantially the same diameter as said `first mentioned shell and an annular cover extending over said last mentioned shell and inwardly of the edge of said secondV men# tioned shell.

In testimony whereof I aflix' my signature.

ARTHURR JP'soN.

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