US2563230A - Internally fired gas burner with interconnecting flash tubes and safety cutoff - Google Patents

Description

g- 1951 c. E. FITZGERALD 2, 63,230

INTERNALLY FIRED GAS BURNERS WITH INTERCONNECTING FLASH TUBES AND SAFETY CUT OFF Filed May 1a, 1948 v INVENTOR. CARL E..FITZGERQLQ I W e: that-n1 Paient dee 57,. 19st INTERNALLY FIRED GAS BURNER WITH INTERCONNECTING FLASH TUBES AND SAFETY CUTOFF Carl E. Fitzgerald, Chicago, Ill., assignor to Buronset, f

dett Manufacturing Company, Chicago, 11]., a corporation of Delaware Application May 18, 1948, Serial No. 27,750

4 Claims. 158-1171) This invention relates to combustion apparatus of the type employing a combustible gaseous fuel, such as a mixture of hydrocarbon gas and air, the apparatus consisting of a series of ining the time it is energized. The confronting side 2 walls of the burner bodies ar formed with openings 22.

In the burner structure illustrated, these openings are in the form of notches formed in the side diVidual burners arranged in a combustion chami walls of the bodies, with the bottom wall 23 of her. Often the combustion chamber is of conth openings arranged tangential to the bottom siderable size extending sev al feet n length as, curvature of the concave surface II, or forming f r mpl in o s f r yi coatings applied a continuation thereof. An ignition tube 24, to automobile bodies and the like. such arrangepreferably formed of refractory material, i ments pr s t a d fl ult situati in r sp to ranged intermediate the burners with the ends t n igniting the u s It is essential of the tubes arranged in registration with the that all f th ur be quickly ignited. a openings 22. The tubes 24 have an internal diif y of the burners fail to ignite, it s mp ameter at least equal to the depth of the opentant that t supply of m us be shut cu. ings 22. The tubes are supported and maintained Otherwise, e unburned gas d a mixture in place by a yoke formed of sheet metal memcu t in the combustion chamber will bers having a portion 25 encircling the burner sult in an explosion of considerable magnitude. body, nd end portions 28 arranged on opposite This nv n has as an Object a combustion sides of the tubes 24 and contracted against the apparatus wherein the individual burners are suctubes by clevis members 21 nd b lts 23. cess v y g this ignition taking place n- With this construction, the burners may be y and e app u s means y, arranged at any convenient spacing along the i the event y burner in the series fails to supply manifold l0, and the tubes 24 cut to the nite. the supply combustible will be shut desired length so that the nds of the tubes will The invent o co s in the novel features be arranged in juxtaposition to the sides of the and in the combinations and constructions here- 25 burner bodies Th arrangement for lighting the inafter set fo and claimedburners is shown diagrammatically in Figure 1 In describing this invention, reference is had and includes an igniter 3 arranged in t tct e cc p y g drawings in which like charsition to a burner at one end of the series. A acters designate correspo D all the thermostat 3| is arranged in heat exchanging views. relation to the burner at the opposite end of the ure 1 s a p p w Of a combustion series. The igniter 30 is operable, when enerpp us embo y y invention. gized, to ignite combustible gas in the burner Figure 2 s a sectional w taken on line employing an electric spark for this purpose, as Figure will be well understood. The igniter is energized Figure 3 s a View taken on line Figure by a, manually operable switch 32 which, when Fi ure 4 is a sectional view taken on line ll, actuated to the on position, completes a circuit Figure from the supply line to the igniter. This is This apparatus consists o a gas supply meuibrought about by the movable contact as bridgfold In on which there is mounted a series of ining ta t 34, 35, leting a circuit from the dividual burners. These burners each consist of t i 35 of th l line to the igniter a p shaped body formed of refractory material through wire 31. The igniter is connected to the with an annular concave burning surface H. The common i 33 of th supply through wire 39. bod es a provided h a central aperture to Actuation of the switch 32also efiects energizareceivea hollow stem l2 threaded into a shoult f Solenoid 49 i t d ith th supply dered sleeve I 3 which, in turn, is threaded into valve 2L This is brought about by th movable the ma fo d The p r end of e stems contact bridging the contacts.42,-43, connecting I2 is formed with a head portion l4 coope able the hot side 36 of the line to the solenoid 40 with an a justable baffle IE to direct the combustithrough wire 44. The opposite side of the soleble mixture downwardly and across t e curv noid is connected to the .common return 38 or concave burner surface ll.- These burners are 50 thrpugh wir 45, Accordingly, the valve 2! is 01 the type disclosed in the Burdett.Patent N0. open to supply the combustible gas fuel to the 1,959,456. The manifold I0 is connected to a supburners through the manifold l0 and simulply pipe 20 through a solenoid operated valve 2|. taneously, the igniter 30 is energized, lighting the This valve is normally closed and is opened durfirst burner of the series. As soon as the manifold I0 is connected to the supply pipe 20, gas

is supplied to all of the burners and is directed in both ends of each of the ignition tubes ll, whereupon these tubes are quickly filled with gas and the burners become successively ignited, as will be well understood. This ignition of all the burners takes place almost instantly, whereupon the switch 32 is released. The contacts of the thermostat 3| become closed as the last burner of the series is ignited and establish an operating circuit to the solenoid 40, the thermostat being connected to the supply 35, through wire 41, and to the solenoid through wire 48.

With this arrangement, if any of the burners in the series do not ignite, the remaining burners of the series will not ignite, and the contacts in the thermostat it will not close. Accordingly, upon release of the manually operable switch 32, the solenoid will be deenergizcd and the supply to all the burners will be shut off. The operator is thus informed ofthe existence of a defect in the combustion apparatus, and can proceed to remedy the trouble. This prevents a portion of the series of burners being operated and accordingly, the excess accumulation of unburned gas from the burners that have not been ignited.

I am aware of the fact-that gaseous fuel burners have heretofore been ignited through the use of an ignition tube, or flash tube. However, in my apparatus, I arrange the burners in a series arrangement, whereby gas is supplied to the ignition tubes at both ends thereof. This, coupled with the fact that the tubes are of large diameter, results in the tubes being quickly and completely filled with gas, and in prompt ignition through the tubes from one burner to the next.

What I claim is:

i. A combustion apparatus comprising a gas supply manifold, a plurality of gas burners mounted in spaced relation on said manifold, each of said burners comprising an annular wall structure forming an upwardly concave combustion surface and a gas conducting passage communicating with said manifold and having an upwardly directed discharge outlet through the center of said combustion surface, a bailie arranged in juxtaposition to said discharge outlet and operable to direct gas outwardly from said outlet across saidconcave surface, the confronting sides of each of said annular wall structures being formed with an opening, the bottom portion of which is arranged tangential to the bottom of said concave surface, a tubular flame conducting memberextending from one burner to the next, with the ends of the tubes arranged in register with said openings. I

2. A combustion apparatus comprising a gas supply manifold, a series of gas burners mounted in spaced relation along said manifold, each of said burners including a cylindrical body having an annular wall structure forming an upwardly concave combustion burner surface, a gas conducting passage communicating with said manifold and having an upwardly directed discharge outlet through the center of said concave surface, a bafne member arranged in juxtaposition to said discharge outlet and being operable to direct gas outwardly from said outlet across said concave combustion surface, the confronting sides of each of said annular wall structures being formed with openings, a flame conducting tube extending from one burner to the next, and means cooperable with said tubes to position the ends thereof in registration with said openings.

3. A combustion apparatus comprising a gas supply manifold, a series of gas burners mounted in spaced relation along the manifold, each of said burners including a body comprising an annular wall structure forming an upwardly concave combustion surface, a gas conducting passage arranged in the center of said surface and communicating with said manifold and having an upwardly directed discharge outlet through the center of said surface, a baiile carried by the body in juxtaposition to said passage and being cooperable to direct gas from said passage outwardly across'said .concave combustion surface,

the confronting sides of each of said annular wall structures being formed with openings, the

bottom wall of said openings being tangential supply manifold, a'solenoid valve operable when energized to connect said manifold to a source of combustible gas, a series of gas burners mounted in spaced relation along said manifold. each of said burners including a body comprising an annular wall structure forming an up-'- wardly concave combustion burner surface, and a gas conducting communicating with said manifold and having an upwardly directed discharge outlet through'the center of said concave combustion surface, a balile arranged in juxtaposition to saiddischarge outlet and cooperable to direct gas outwardly from said outlet across said concave surface, the confronting sides of each of said annular wall structures being formed with openings, a tubular flame conducting member extending from one' burner to the next, with the ends of said tubes being arranged in register with said openings, igniter means arranged in proximity to a burner atone end of said series and beingoperable when energised to ignite the combustible gas in said burner, a thermostat arranged in proximity to the last burner at the opposite end of said series, a manually actuated switch means operable while actuated to closed position to energire said igniier and solenoid valve, and said thermostat including means to maintain energization of said valve upon ignition of the said last burner.

CARL I. FITZGERAID.

BEFEBENCfiS CITED The following references are of record in the file of this patent:

. UNITED STATES PATENTS 2,503,260 Apr. 11, 1950

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