US1688395A - Oil burner - Google Patents

Description

Oct. 23, 192s. A1,638,395

s. E. MEYERS OIL BURNER Filed May 29, 1924y 2 Sheets-Sheet l Oct.

S. E. MEYERS OIL BURNER Filed May 29, 1924 2 Sheets-Sheet Patented Oct. 23, 1928.

UNITED STATE-s; 'PATENT OFFICE.

SIDNEY E; MEYEBS, OF BUFFALO, NEW YORK, ASSIGNOR, BY DIRECT AND MESNE AS- SIGNMENTS, TO MELCO ENGINEERING CORPORATION, A yGOIRPORATION OF NEW YORK.

oIL BURNER.

Application'led- May 29,

t mate combustible mixture ofv air; and: thoroughly andsubstantially completely vaporized oil while-avoiding any carbon deposits within the burnery structure, to deliver' the fuel mixture uniformly throughout the arca .ofits discharge opening and in such manner ythat the resultantflame is highly .eflicient and free from any blow torch effect Vorvobjectionable degree of noise, to avoiddestructive.heating of the burner casingor pot,-and to provide for low pressure operating conditions.

The invention consists generallyvin novel features of structure andcombination which will be set forth inv detail as the *description proceeds. L

In the accompanying drawings:

Figure 1 is aplan view showinga burner in accordancevwith -the invention as installed in a heating furnace. Y

Figure 2 isa-view drawn to'larger scale showing the burner partly in section and' partly in plan, the sectionl being takenA on line 2-2 of Figure 3. 1

Figure 3 isa verticalsection on'the line 3-3 of Figure/2. f

Figure 4 is a cross section on the line lf-l o-f Figure 3. Y

Figure 5 isa plan viewvof Vthe vaporizing clement.

Figure 6 is a side elevation of the same.

The burner B is provided at the end of an air trunk T and is supplied with oil by a pipe Op The burner includesl a casing which,'ac cording to the-invention, has a bottom l, a helical 'vertical wall 2 and atop plate The walls l, 2 and 3' provide a chamber 4which, owing to the spiral formofitsfvertical perimetric wall, causes the gasified fuel tok have a whirling motion whichprolongs its contact with :the adj acentfheated surfacesand effects its intimate admixture withl the air supplied by the trunk T; and-by which the combustible mixture is completed. Thel gaseous: fuel in the chamber 4f issues in a state of combustion from the burner through an opening in they top plateS, combustion being completed outside the burner.'v The fuel discharge opening, as 5, is cio-axial with the `axial point of origin of the helical wall 2 and is preferably formed 1924. `Serial No. 716,659.

in an annular section 3 which is functionally a part ofthe top .plate'and is removably supported on a ledge 6 'delimiting an opening 7 in the top plate. By thus! providing the opening 5 in a separabletop plate section 3a the size of the fuel discharge opening may be readily selected as conditions may require, it being understood that different sections V3 will have openings of different diameters and that all that is necessary` in any case is to employ asection having an opening of a size best adapted for the requirements of the particular installation. v

The air trunk T is connected tangentially tothe burner casing and is in opencommunication with the chamber 4, the vertical'walls of said trunk being connected at their ends to:L the ends of the helical wall 2 of said chamber whereby the latter forms in eecta laterally disposed helical continuation of the air trunk. Y f

The burner also includes a vaporizing element upon which theoil discharged bye-the pipe O is deposited yand which is so arranged that its temperature is `raiseds'uitably above the vaporizing point of the oil by heat radi- `ated from within the chamber 3. 'As shown i and preferred thevaporizing element consists of aplate 8 which is arranged partly within the discharge end of the trunk T and partly within the portion of the-chamber 3 n adjoining such discharge vend, the sides of said-plate conforming to the helical curvature of the wall 2. The plate 8 extends within the chamber 3 for a fraction of a circle, preferably" approximately ninetyy degees, and is inclined downward in the direction in which' it extends into said chamber, beingprovided at its end located within the trunk T with a depending vtransverse supporting flange 9 bywhich such end of the plate is supported at gthe elevation desired. The oil pipe O adacentftheburner `has a lateral extension f which projects into the trunk T and terminates in a discharge, extension 10 arranged to over-'lie thefplate 8y whereby the oil delivered by the lpipe Oy will be deposited onsaidplate. The oil supplied to the chamber 3 is initially ignited by a gasV burner l11 which is connected to a gas rpipe 12 and is arrangedyunder the raised endofthe plate 8. At a point in ad- Vance of the gas burner 171' the plate 8 is In case anyexcess oil should be deposited m in the chamber 4, due to overfeeding or to a failure of vaporization or ignition-from any cause whatever, such excess will 'How away through a pipe 164 which may be connected to the vertical wall of said chamber at any point except under the plate 8, the pipe 16 leading to an oil recovery tank (not shown).

It will be noted that the plate 8 with its flange 9 provides a complete barrierto protect the llames of the gas burner l1 from o the air blastdscharged by the trunk T and that all of the air is caused by the flange 9 to pass above the plate 8. l

In operation the gas is lighted at the burner 11 and burns under the 'plate 8 which 5 becomes moderately heated. Oil and air are way by the heat of said plate.

admitted simultaneously through the pipe O andtrunk T respectively. The oil being deposited upon the sloping plate 8 flows toawardits lower end and is vaporized on the The gas flames issuing through the openings 13 ignite the oil vapor and combustion commences. The helical shape of the chamber 4 causes the vapor and air to revolve at high Vspeed 55 which promotes the intimacy of theinixture and shortens the time required for its production. A centrifugally formed rapidly whirling stratum of air surrounds the burning mixture in the chamber 4 and has a cooling effect on the walls ofV said chamber whereby destructive heating of the burner casing is avoided. The combustion which occurs lwithin the chamber'4 supplies the radiant heat necessary for maintaining a vaporizing temperature in the plate 8. The burning rapidly whirling c mixture issues uniformly throughout the area of the opening 5 and has a natural centrifugal spread which, combustion being completed outside the burner, results in a llame of the most eflicient cha-racter for heating purposes, that is to say a relatively low and wide fluffy or bush-like flame. OnceV having established combustion the process is automatic and the operation of the gas burner 11 may be discontinued.

The oil may be supplied to the furnace by gravity feed or under just sufficient pressure to insure its deposit at the required rate and the air, which is not intended to have any atomizing action, is forced through the trunk T` under low pressure, e.y g. approximately four or live pounds, which is sufficient for its delivery in the amount required to insure complete combustion and to develop the requisite whirling movement of the mixture.

It is particularly to he noted that the vaporizing element, in this instance the Vplate 8, is so arranged that it is heated by radiation from the flame of the mixture burning in the chamber 4 to a degree which prevents it from being cooled below the vaporizing point of the oil by the current of air issuing from the trunk T. Itfollows that the plate 8 is always maintained at a temperature which will effect vaporization of the oiland that the deposit of carbon anywhere' within the chamber 4 is prevented. I have found that any free carbon' which may lodge on the plate 8`is swept away as soon as deposited y by the mechanical action lof the current'of air passing over said plate. In other words non-volatile carbon will not deposit on a vaporizing surfacewhich is being swepty by a copious supply of air.

' Having fully described my invention,` I claim Y V i 1. An oil burner comprising av chamber having a helically curved-vertical wall adapted to cause the flame to'whirl` and after leaving the burner to spread, a top wall provided with a circular fuel discharge openingarranged co-axially with the axial point of origin of said vertical wall,- an oil vaporizing element so arranged in said chamber thatv it is raised by 'the radiated heat of thefmixture burning in said chamber to oil vaporizing temperature, said vaporizing element being located atone end of the helically curved wall, means for` depositingfoil on said Vaporizing elementand an air trunk communicating with said chamber and extending tangentially theretoand arrangedto directvthe f current ofrair over the vaporizing element to produce a scrubbing action on the same.V

2. An oil burner comprisingv a chamber having a helicallyv curved vertical lwall to cause the flame to whirl, a top wall provided V with a circular fuel discharge opening ainu j and a pilot burner arranged under Isaid plate, the latter having openings throughV which the flames from said pilot burner may pass. yl v v K Y i 3. An oil burner comprising an air trunk and al chamber laterally offset from and cominunicating with the discharge end of said air trunlrwhich adjoins said chamber tangentially, said chamber having .-a helical ver tical wall and a top provided with a circular fuel discharge opening arranged (zo-axially said'chamber, and an oily supply pipe hav- With the axial point of origin of said Wall, Aing its discharge end arranged to deposit an oil vaporizing plate positioned in the oil on said plate. discharge end of said air trunk and eXtendn testimony whereof I aiix my signa- 5 ing into said chamber, said plate being swept ture.

by the cool air from said trunk and heated Y to vaporizing heat by the radiation Within SIDNEYEi-MEYERS.

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