USRE16601E - Oil and gas buhner - Google Patents

Description

16,601 April 19, 1927, L. G. DANIELS Re OIL AND GAS BURNER Original Filed Jan. 1,7. 1922 Reissued Apr. 19, 1927.

UNITED STATES PATENT OFFICE.

LEE G. DANIELE, F ROCKFORD, ILLINOIS.

OIL AND GAS BURNER.

Original No. 1,484,814, dated February 26, 1924, Serial No. 529,824, filed January 17, 1322. Application for reissue iled May 23, 1925. Serial No. 32,517.

This invention relates to liquid fuel burners` adapted for use in heaters and furnaces, and has more particularly reference to oil burners, and also to a combination oil and gas burner. The liquid fuel used in burners of this character is a hydrocarbon, low gravity oil which is inherently diiiicult to bring to a state of combustion, especially with a simple and inexpensive burner. such as the requirements of this trade demand.

One of the important objects of the present invention is the provision of a combined oil and burner o1 novel construction which will be practical and etiicicnt. In this regard, my invention contci'nplates the use of gas. first as a pilot lighter lo facilitate starting the burner, and secondly as a primary burner in conjunction with the oil burner to suit the conditions and requirements of those localities Vin which both oil and gas may be economically used as fuel.

Another object the provision of an oil burner comprising the following principal parts, namely: a base, a burner bowl and an air pipe casing arranged in a novel and particularly advantageous manner and permitting ready assembly and accurate adjustment of the parts to obtain most eilicient results.

Still another object is the provision of an air pipe or air supply casing embodying heat radiating ribs designed to increase the efficiency of the burner.

In furtherance of the foregoing, I have aimed to provide a burner consisting of comparatively few parts constructed in suoli simple manner that they may be pro-duced at a low cost and may be quickly and easily assembled and adjusted. and which when in operative condition will function very efficiently and will serve in a satisfactory manner the purposes intended.

Other objects and attendant advantages will be appreciated by those skilled in this art as the invention becomes better understood by reference to the following description when considered in connection With the uccomjianying drawings. in which Figure 1 is a top View of a burner embodying my invention;

Fig. 2 is a vertical sectional view through the burner taken substantially on the line ))2 of Fig. 1; and

Figs. 3 and 4: are detail sectional views taken substantially on the lines 3k?) and 4-4 of Figs. 1 and 2. respectively.

The principal parts mentioned above. namely, the base, burner bowl and air-pipe easing are designated. generally by characters and 8, respectively, These parts are preferably castings. The base (i. annular in form, has a peripheral flange 9 and is adapted to be permanently set into a furnace or heater, preferably by cementingl below the` flange 9.

The burner bowl 7 has an annular portion 11 adjustably supported on the base as will be described. and has a bowl portion 12 at the center of which is formed an upstanding burner 13. This burner is of frnsto-conic-.ll shape and is referred to herein as a cone burner. There is a central fuel passage 14 through the burner proper, and a liquid fuel supply pipe 15 connects with the lower end of this fuel passage. Any suitable means may be provided for regulating the flow or feed of fuel through the pipe 15. such for example as a regulating valve 16. nu overflow pipe 17 is provided for the bowl 12 as a safety factor. permitting overflow of the liquid l'uel to actuate a shut-off valve. such as described in my Patent No. 1.524.914, in the event that the burner flame should accidentally be extinguished. However. any suitable safety device may be employed. although its use is not essential to the present invention. The burner bowl is also shaped to provide a plurality, four in the present instance, of circumferentially spaced vertical air passages 18. The means for adjustably supporting the burner bowl on the base consists in the present instance of a number of equally spaced set screws 19 threadingly engaged in the rim portion ot the bowl '11. as shown in Fig. 3. and resting on the top of the hase 6. By proper adjustment of these set screws the burner bowl may be very accurately leveled` that is, as regards position of the burner proper. so that the oil rif-ing in the passage 14 will he equally distributed over the top of the cone burner and will flow down evenly over the entire peripheral area ot: said burner. t'lueh an adjustment is an important factor in a burner si' this character as it a. means of insuring V`puit distribution ol the oil and promotes reiter combustion and greater ellicieney. lhe set screws may be locked in the set position by uterine of a suitable plastic filling 2l which may.y itl desired. be subsequently lenuived t'or the purpose ot readjusting the set screws. in the event that the burner should get out ot 'alignment by shitting or settling ot' the furnace.

'lhe air supply casing' is shaped to provide a central mixing chamber E22 surrounding the burner 13 and further to provide radial pipes registering with the air passages le. The pipe portions 23 of the air rupply 'using seatV on the burner bowl and thus support said casing in position. The mixing chamber 22 has at its lower end an annular outlet 2l about the burner, through which outlet the products of combustion escape, as will be presently described. The air drawn into the mixing chamber through the passages 'i8 and the pipes 223 will be heated by reason otl the fact that the burner.

flames envelop the pipes 23. This air will loe brought to a high temperature by reason 0f the radiating ribs formed on the interior walls ot' the pipes and shaped to follow the general course o-t' the air therethrough.

l have now provided a gas burner conibined in a novel manner with the oil burner and adapted to serve both as a pilot lighter and as a primary burner, or in conjunction with the oil burner, or independently thereol. In the present example. this gas burner consists ot a hood or inverted cup shaped cap 26 supported by the air supply casing 8 eentrally above and inclosing the top ot' the burner 13. A gas supply 2 connects with the gas burne' as shown, and the gas is delivered downwardly through :i jet opening 2S into the chamber formed by the hood 2G. The gas will issue through the opening il ilieripheraily about the cone burner lil and the tlaine will completely envelop said cone. therebyr bringing to a state ot combustion the iilm of oil flowing down the peripheral wall ot the cone.

In operation, the gas burner serves as a pilot burner and by heating' the cone burner enables quick and convenient lighting of the oil burner. This pilot'lighter is especially' delirable. because of its convenience as dis tinguished trom prior oil burners now in common use. which are more or less inconvenient and difiicult to light. This facility ot lighting has another advantage. It insures a ontinuous flame. Which in the absence of a pilot burner is sometimes extinguished by a strong or sudden draft. The ges burner may be also used as a` primar)r burner either in conjunction with the oil burner or independently thereof, according to the conditionsJ at hand. This is especiah ly desirable in those communities in which both oil and natural gas are available as fuel but the supply varies and at certain times in the year may be very low either on account ot' increased consumption or for other reasons in such event, the owner ot a burner ot the character described herein muy adjust the fuel Yleed to liteit suit the particular conditions at hand. As regards the function of the burner, it will be manitest that the oil rising in the passage 14 will flow over the top ol the. rone burner, equally distributed cirerunferentially thereabout, and will iow down the periphery oiiv said burner. The oil will be heated tirst by con-- duction from the burner. which in turn has been heated by the gas flame and by coinbustion ol' the oil on the periphery of the burner` und will be tiuaily heated and brought to a state o combustion by the iaine at the bottoni of the mixing chamber. In efficient operation ot this burner the oil will be consumed before it reaches the bottom o the conc. lt will also be noted that b v reason ol the facilities for heating the air,y quicker and better comlnistion will be insured.

,It is believed that the foregoing conveys a clear und irstanding ot' the objects prefaced above, and while Vl have illirftrated but a single workingl embodiment. it should be understood that considerable changeV might be made in details of construction without departing lron'i the spirit and scope ot' the invention as expressed in the appended claims.

I claiml. In a liquid fuel burner, the combination of a cone burner, a central fuel supply passage therein, whereby the t'nel Hows over the top and down over the periphery ot' the cone burner. a supply hood embracing the top ot the cone burner and leaving a peripl'ieral opening' about the same,y and a gas supply pipe entering said hood Irom one sido thereof` whereby a gas thune will be delivered downwardly peripherally about the cone burner.

2. In a burner of the character described. the combination ot a burner howl having an upstanding cone burner provided with a central oil passage trom which the oil flows over the top ot the burner and down the outer side thereof, an air supply casing over said burner. and a supply pipe extending upwardly through the burner bowl at one side of the burner and upwardly through the air supply casing and thence laterally to a point in proximity to said burner for directing a gas flame downwardly onto the cone burner.

3. A burner of the character described comprising a stationary annular base. a burner bowl supported on said base plate and having a central upstanding cone burner llt) lift' and a pluralityv ot circumterentially spaced vertical air passages, an air-supply casing supported on said bowl and shaped to provide a mixing chamber' about the cone burner and a plurality of air pipes radiating from said mixing chamber and registering with the air passages in the bowl, said casing having an outlet above the cone burner at the bottom oi' said mixing chamber, and a burner in said mixing chamber `for directing a lame peripherally of the cone burner.

el. A liquid fuel burner ot the character described comprising an annular base, an annular burner bowl seated on theI base and having a central upstanding burner cone and circumferentially spaced vertical air passages, a fuel supply pipe connected to said cone burner, an air pipe casing seated on the burner casing and having air passages registering with those in the burner casing, said passages terminating in a mixing compartment surrounding the cone burner and havingI a lower outlet Jfor the escape of products of combustion` a supply hood concentric with and embracing the cone burner; and a pipe for supplying gas to said hood, whereby the gas: dame is directed downwardly about the cone burner.

5. A burner of the character described comprising an annular base, a burner bowl adapted to be seated on the base and carrying an upstanding burner and a mixing chamber casing about the burner, and means adjustably supporting the burner bowl upon said base for leveling the burner.

A burner of the character described comprising an annular base, a burner bowl adapted to be seated on the base and carrying an upstanding burner and a mixing chamber casing about the burner, and means adjustably supporting the burner bowl upon said base comprising a plurality ot' adjustable elements spaced circumferentially otl the burner bowl for effecting' vertical adj ustment of the bowl with respect to the base.

T. A burner ot' the character described comprising a base adapted to be lixcdly secured in a furnace or heater, an upstanding liquid fuel burner having a central fuel supply passage through which fuel is delivered over the top of the burner and downwardly over the peripheral wall thereof, and means supporting the burner on said base with capacity tor adjustment to insure even distribution ot the oil over said peripheral wall.

S. ln a burner of the character described, the combination of a burner bowl, a cone burner therein` a mixing chamber about the burner, said burner having a central vertical liquid fuel supply passage whereby the fuel will flow over the top of the burner and down the outer side thereof, and means for adjusting said cone burner to insure even distril'iution of the oil periplierally about the burner.

9. In a liquid fuel burner of the character described, the combination of a burner bowl having a central upstanding cone burner, an air supply casing forming a mixing chamber about the burner and proriding a plurality of radiating air pipes` and heat radiating ribs in said air pipes.

10. In a liquid fuel burner ot' the character described, the combination ot' a central burner, a casing providing a mixing chamber about the burner, and air supply pipes radiating from said mixing chamber and having internal heat radiating ribs.

11. A burner ot the character deiaribed comprising a burner bowl having a central upstanding cone burner, a fuel-supply pipe connected to said cone burner, whereby fuel will be delivered downwardly over the outer side of the burner, said bowl having a plurality oit' circumferentially spaced vertical air passages, an air-supply casing above the burner bowl forming a mixing chamber about the cone burner and having a plurality of air-supply pipes radiating tron: said chamber and registering with said vertical passages, a gas burner in said mixing chamber carried by the air-supply casing, and means for supplying gas to said burner.

12. A burner of the character described comprising a burner bowl having a central upstanding cone burner, a fuel-supply pipe connected to said cone burner, whereby iuel will be delivered downwardly over the outer side of the burner, said bowl having a plurality of circumferentially spaced vertial air passages, an air-supply casing above the burner bowl forming a mixing chamber about the cone burner and having a plurality of air-supply pipes radiating from said chamber and registering with said vertical passages, a gas burner carried by the airsupply casing above the cone burner, and means for suj'iplying gas to said burner.

i3. A burner ot' the character described comprising a burner bowl having a central upstanding conc burner, a fuel-supply pipe connected to said cone burner, whereby fuel will be delivered downwardly over the outer side of the burner, said bowl having a plurality ot' circumferentially spaced vertical air passages, an airsupply casing above the burner bowl Jforming a mixing chamber about the cone burner and having a plurality of air-supply pipes radiating` from said chamber and registering with said vertical passages, a gas burner in said mixing chamber, and a gas-supply pipe extending through one of said air passages and air pipes and connected to the gas burner.

14. In an oil burner, in combination, a burner bowl having a liquid Jfuel burner, an air supply casing overlying the burner bowl adapted to be heated by the burner and to deliver air thereto for supporting combustion` and a gas supply conduit extending through Said air supply Casing and having,` i1 delivery opening directed downwardly t0- wurd the burner for delivering a gus flame onto said burner for heating it and igniting the liquid fuel.

l5. 111 an oil burner, in Combination, :i burner bowl having a. liquid fuel burner; means providing an air supply for the burner comprising an air easing overlying the burner und adapted to be heeled thereby so is to prehent ihe uir delivered to the burner` und an air inlet passage for said cashugl extending' up through the burner bowl: und n gee lighter pipe extending up through J Suid uir inlet passage and adapted for deliveringl n gas Haine for lighting the burner.

lt. ln combination, a liquid fuel burner, an air supply conduit for delivering air thereto having' an air inlet extending up- ;ni wurdly et the side of the burner und over the saine so as to be heated by the flame, and :i gue supply pipe extendingr through said inlet and providing a pilot lighter for de livering u llame onto the liquid fuel burner i through the delivery end ol" Suid nir inlet.

17. In Combination, a liquid fuel burner,

un air supply casing for delivering air to Suid burner, said easing being so located ne to be heated by the burner l-or pre-heldin;r the air delivered thereto, and a gus lighter including piping disposed within laid air supply Casing extending to a point sufliciently close to the delivery end ot' the casing for delivering a gas iizinie through said delivery end onto the burner for lighting),l the seme. i

18. In un oil burner of the charm-ter de- ;f-,rribeih comprising e burner bowl having' n Central fuel delivery opening', und :1n nir supply easing overlying the burner bowl having :i venti-nl uir delivery opening;l in the virinity of the fuel deliveryY opening und u lateral air inlet opening, u gue lighter pipe for heating the bowl and igniting the fuel` said pipe being extended through said air inlet into said casing and Within the easing); to n point permitring the delivery of n flame into the burner bowl while the said piping remains shielded by the mixing' from the Home ol' the burner.

LEE (i. DANIELS.

CERTIFICATE 0F CORRECTION.

Reissue Patent No. 16,60i. Granted April I9, 19271 to LEE G. DANIELS.

It is hereby certified that error appears in the printed specification 0f the above numbered patent requi ring correct ion as fol ows: Page 2, line 129, claim 3. strike out the word "plate" and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of May, A. D. 1927.

M. J. Moore, Seal.

Acting Commissioner of Patent.

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