US1696840A - Gas burner - Google Patents

Description

Dec. 25, 1928. 1,696,840

H. E. DICKINSON GAS BURNER Filed Aug. 2, 1926 f i5, g

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Patented Dec. 25, 1928i'.

UNITED STATES i i Y 1,696,840 PATENT oFFicE.

HARRY E. DICKINSON, OF HOUSTON, TEXAS.

GAS BURNER.

Application :led August 2, 1926. Serial No. 126,533.

The present invention relates to improvements in gas burners and more especially to those of the class adapted to be used for heating and similar purposes, and the primary object of the invention is to provide a novel and improved burner of this class whereby substantially complete combustion of the gas and uniform distribution of the heat produced are attained, the burner being so constructed that it may be manufactured inexpensively and may be installed with The invention provides a burner embodying a suitable number of air and gas mixing burner tubes or units each of which is provided with divergent orifices from Which the combustible air and gas mixture issues and burns to produce a flame ofv substantially fan-like form, the burner tubes or units being so grouped as to arrange the flames in a continuous or substantially continuous annular series f although impingement of the flames, one against another, is prevented, high eiiiciency of combustion and effective distribution of the heat being thereby attained. i

The present invention alsol provides a burner construction which is relatively simple and is capable of being readily and inexpensively manufactured, and which can be installed with facility in stoves, furnaces and other heating appliances, it comprising a gas manifold into the top of which yare fitted the gas jets or nozzles, and burner tubesare connected to said jets to receive gas therefrom and are provided with means for mixing air with the gas to produce the combustible mixture, the upper portions of the tubes being provided, withorifices for the emission of ,the mixture for combustion.

Another object of the'invention is to provideV the center of the gasvmanifold with a gas jet for supplying gas to a pilot burner, a pilot burner tube being connected to this jet to receive gas therefrom and to mix air therewith and having orifices in itsupper portion for the discharge ofthe combustible mixture which supplies the pilot light or lights.

AV further object of the invention is to provide a canopy which may be threaded on or otherwise fixed to the top of the pilot burner tube and overlies it and the surrounding burner tubes, the canopy serving to prevent extinguishing of the pilot light by down drafts or excessive flue drafts.

To these and other ends, the invention consists-in certain improvements and combinations and arrangements of parts, all as will be hereinafter more fully described, the featuresof novelty beingipointed out particularly in the claims at the end of theV specification.v

In the accompanying drawings Figure l is a side elevation partly in central vertical section through algas burner constructed in accordance with the preferred embodiment of the invention;l

Figure 2 is a top plan view of the burnerv as shown in Figure 1, f

Figure 3 represents a cross-section through the burner taken on lthe line 3-3 of Figure l; and r f Figure 4 is a vertical section through one of the burner tubes ytaken onthe line 4-4 of Figure l.

Similar parts aredesignatedby thesame reference characters in the different views. Gas burners embod ingy the present invention are adapted fbi1 use'in vconnection with gas floor furnaces, gas heating plants, stoves and various other heating appliances. The preferred construction Yof burner is shown in the accompanying drawing. and Willfbehereinafter described in detail, but it is to be understood that the invention is not restricted to the precise construction shown, as variations in construction to adapt i trolling valve 4, 5 designates a branch pi e A which leads from the fitting 6 on the main gassupply pipe, preferably in advance of the control valve 4 therein, this branch pipe serving to supply gas to the pilot light, and 7 designates a Valve or cock in this branch pipe WhiChregiiIatesv or controls the flow of gas tothe pilot light. The burner may be installed invarious ways, as will be understood by those skilled in the art, as, for

example', in the 'combustion chamber ofa furnace,.stove, heater or vother heating plant or appliance. f

The burner comprises a'manifold 8 which may be* cast of iron or other suitable metal, 1.

it beingpreferably annular in form and con taining within it an annular gas supply passage 9. The main Vgas supply pipe- 3 is suitably connected to supply gasto this passage, the pipe 3 being shown in the present instance threaded into a side of the mani-V fold so that it communicates with the passage 9. A suitable number of' gas jets or nozzles 10 are fitted into the top of the manifold, these ets, as shown, being formed as nipples, the intermediate portion of each of which is preferably hexagonal or otherwise angular in form, as at 11, to' receive a wrench, and the lower end of each nipple is threaded, as at 12, to fit a correspondingly threaded hole in the top of the manifold, each nipple having a central or axial bore 13 which is in communication with and receives gas'from the passage 9, the gas thus received discharging at the vtip of the jet which is nozzle-like in form, so that the gas will be directed in a stream upwardly. Four gas jets or nozzles are shown in the presentV instance, but itV will be understood that a greater lor less number thereof may be used. Preferably,4 the jets or nozzles are spaced symmetrically or equidistantly around the circumference of the manifold, as is shown in Figures 2 and 3, the passage 9 within the manifold being suliiciently large in cross-section to insure uniform flow of gasto all of the jets.

A burner tube 14 isv provided for each of these jets. These burner tubes may be formed of castings of iron or other suitable material, they each being formed with al vertical bore or chamber 15 which leads from the bottom toa point near the top of the respectiveA burner tube, the top of the tube, however, being closed, and' the lower end of each burner tube is formed to receive the respective gas jet 10. Preferably, the lower end of the tube is threaded to `receive the upper thread 16 on the gas jet. The gas jet thus projects upwardly into the tube andthe tube is provided withl a transverse passageway 17 or is otherwise formed with openings leading to the jet 10 and communicating with the bore 15 of the tube whereby air will be miXedwith the gas dis-v charging from the jet and the resulting ain and gas mixturel w-ill flow upwardly into the bore 16 of; the burner tube. Each burner tube is provided near its top with oriiices 18 for the discharge of the combustible air and gasmixture. According to the present invention, a plurality of these oriltices is provided in the outer side of each burner tube, these orifices leading from the burner tube at relatively divergent angles, as will be clear from Figs. 2 and 4e, whereby the flame produced by the burning of the combustible mixture at the outer ends of these orifices will? be spread laterally orhorizontally intoa substantially. fan-like form.

tributed 'around the burner, so that they form; a: continuousy or substantially continuous flame encircling the burner, but the flames do not impinge against one another and, hence, high efficiency in combustion is.

attained. i

rhe burner embodies, in addition to the heating tubes above described, a pilot burner which provides a pilot light which serves foi-the ignition of the heating burner tubes.` Preferably, the branch pipe 5 which sup. plies gas for they pilot burner is threadedV or otherwise connected to the bottom of the manifold at the'center thereof, as indicated at 19, thus avoiding-interference withfthe surrounding passage 9` which suppliesl the gas for the heating burner tubes.. The pilot burner jet 20-whichmay be similar in con.-

struction to that of the Vnipplesforming the,

'ets for the heating burner tubes isthreaded as at 21 into the top ofthe manifold at the4 center thereof, so that itsy central axial oritice will receive gas from the pipe 5. The pilot burner tube 22 which may be castor otherwise formed of metal is provided with an interior bore 23 which'extends from the bottom of thistube to a point near the top,

thereof at which point it is closed, and this` tube which may be threaded upon the nip.-` ple forming the jet 20 is provided with a suitable number of slots21l which communi-- cate with the interior bore 231 around thew jet 20 and serve to admit air which mixes with the gas introduced into the bore 23'fby the jet. r1`he air and' gas mixturewhich is forced upwardly in the chamber 23 under the pressure of the inflowing gas discharges from this boreV through the orifices 25 which lead from the bore123" outwardly to.` the eXf terior of this tube, the combustible mixture discharging from these*` orifices maintaining the pilot light orY lights. The pilot lights may be regulatedby appropriate setting of thel valve 7;

The pilot burner tube 22 is preferably made longer than the heating burner tubes 1 4 so that it projects above the top of the latter tubes, andthe upper endof the pilot burner tubes is threaded. or otherwise adapted to receive a canopy 26 which. surrounds the upper end of the pilot 22` and preferably overhangs or overlies the heating burner tubes. This canopy may be, formed ofa substantially clislrlilel casting of metal preferably concavo-convexV in form withy its con cave side facing downwardly, asi-shown, and the canopy serves to-protect' theY pilot light or lights from the effects of: down drafts or excessive flue drafts tending to extinguish llo l the pilot lights. It will be understood that when the burner is not in use as a heating burner, the valve 4 which controls the supply of gas thereto will be closed, but the pilot lights will continue to burn. The heating burner tubes are brought into operation by opening the valve 4, the combustible mix- Vture issuing from the orifices of these tubes being ignited by the pilot light or lights.

I claim as my invention o l. A gas burner comprising an annular gas manifold having a plurality of gas jets upstanding therefrom, a group of tubes one to each gas jet mounted upon the manifold and extending upwardly therefrom, a pilotlight burner mounted concentrically of and on the manifold within said group of burners and projecting upwardly and terminating above the latter, and a canopy mounted on the upper end of the pilot light burner and extending above and over said group of burners.

2. A gas burnei comprising a gas manifold, an annular series of upright burner tubes mounted on its upper side and having air and gas mixing means and relatively divergent orifices extending outwardly from the center of the respective tubes for the discharge of the combustible mixture, the relatively divergent orifices of each tube being operative to produce a substantially fan-like flame from the v burning mixture discharged therefrom, andthe tubes being arranged on the manifold so that the orifices extend outwardly whereby the fan-like flames from the series of tubes will produce a substantially continuous annular flame.

3. A gas burner, including a disk-shaped member having an annular gas chamber with a gas-adinitting port and with a plubeing in the upper face of the member, a plurality of gas jets one mounted in each port and projecting above the member, a plurality of tubes, each tube being attached to the member through the instrumentality of the jet and having a chamber into which the jet opens, said chamber being closed at the top and provided with lower air-admitting ports and with upper gas burning jets, an upstanding pilot burner disposed in the center of the disk and terminating at a point above the upper ends of the tubes, and a concavo-convex disk attached to the upper end of the pilot tube and extending above and over the upper ends of the burner tubes.

In testimony whereof I have hereunto set my hand.

HARRY E. nioKINsoN.

yrality of gas outletports, said latter ports

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