US2511755A - Atomizing burner for fluid fuels - Google Patents

Description

June 13, 1950 A. J. TURPIN ETAL ATOIIIZING BURNER FOR FLUID FUELS IN V EN TORS A1. EXANDE'R d. TuRPm ,q/vo MEL w/v d P4 RKER Fild July 1, 1947 aw wwmw A r TOR/VEX Patented June 13, 1950 UNITED STATES 3 OFFICE 2,511,755 'jj I V ATONIIZING BURNER FUVELS Alexander J. Turpin," Stewart Mal mrraild Melvin J Parker, New York, N. Y., 'assignbrs to Hauck Manufacturing Company, Bro'olr'lynfN. Y., a corporation of- New York Application July 1, 1947, sefiaifia vssms The invention relates to burner apparatus suitable for the combustion offfluid'fuels including those of a solid nature but in finely powdered state; and it is concerned more especially with the mixing of such fuels with an atomizing/gaseous medium for dischargeof an atomized, highly combustible mixture. p y

It'has for an object to provide a novel mixing and atomizing burner head or nozzle whereby the fuel is more efficiently atomized and a more effective mixture obtained for combustion.

Another object of theinvention is to provide a nozzle of the aforesaid nature which will afford maximum velocity of discharge, even at reduced burner operation, due to close proximity of the atomizing action to the discharge orifice of the nozzle.

Still another object of the invention is to provide an atomizing nozzle for fluid fuel wherein a gaseous atomizing medium is supplied close to the discharge orifice of the nozzle whereby to afford a wider range of operation for comparable size burners.

Theinvention has for a further object to so distribute the fuel in thenozzle that it will be provided therein about the greater portion of individual streams of atomizing medium therefor by delivering said fuel from two directions toward the respective streams of atomizing medium.

The invention has for an object, also, to provide a nozzle which will afford a conical pattern of the discharged atomized fuel as individual streams of mixture.

In carrying out the invention, provision is made to supply the atomizing medium through a tubular casing element open at the discharge end which is designed to receive the novel atomizing nozzle member. This member is designed to be carried by the discharge end of a fuel supply tube mounted coaxially within the casing which latter at its discharge end coacts with the said nozzle member in delivering atomized fuel. To this end, jets of fuel are directed radially through a portion of the nozzle and are directed further in a novel manner into streams of the atomizing medium. The latter pass through discharge channels of the nozzle member when it is juxtaposed to the outer end of said casing, said discharge channels being interrupted intermediate their ends by a circular fuel-distributing groove receiving the radially directed fuel jets; and the outer portion of each channel is constructed of larger cross-sectional area than its inner portion.

The nature of the invention, however, will best 3 Claims. (cresc nt) 2 beunderstood when described in connection with the accompanying drawings, in which:

1 is a longitudinal section through the b rn 1 Big. 2 is a front elevation of the nozzle member and Fig 3 is an elevation of its inner end.

E'ig,;4 is a fragmentary development, on an enlargcd scale, of the inner face of the nozzle i inb r Q J Referring to the, drawings, l0 designates a tubular elongated casing member affording a chamber for atomizing: medium which may be suppliedthrougha suitable inlet connection I I, said casing. being open at its discharge end which is indicated as capped by an orifice cap l2 designedto cooperate with ,an atomizing head or nozzle member l3, ashereinafter set forth.

The rear end 'of the casing I 0 is sealed by a removable jplug l l and between this end and the iiilet l Pthere'is-provide'd in said casing a further inlet l5 for the fuel to be atomized. The fuel chamber 16 and the atomizing medium chamber ll of the casing are to be sealed from each other 'at a dividing partition l8 through which a tubular fuelsupply member as the open-ended pipe l9 passes, the same being disposed coaxially within th'ejcasing II]. To effect the seal and at the same time allow of a limited axial displacement of the said pipe 19, for the purpose hereinafter set forth, a sealing tapered and tubular plug or bushing 20 surrounds the said pipe. Between the flanged outer end of this plug and a nut 2| threaded over the outer end of pipe I!) is included a helical spring 22 which not only exerts pressure on the plug 20 to hold it in the sealing position but exerts also a force to displace axially toward plug I4 the said fuel supply pipe l9 as a whole.

At its atomizing end, the pipe I9 is threaded to receive the novel atomizing head or member l3 which is to be securely screwed thereon and is bored at its inner end, as at 23, to align with the bore 24 of the said pipe. The periphery 25 of said atomizing head conforms to the inner contour of the orifice cap 12 which may be substantially conical, as shown, or of any other desired and suitable conformation in accordance with the particular shape of the atomized discharge desired. Due to the action of the spring 22, a tight fit between the respective coacting surfaces of the atomizing head and the orifice cap is assured and the same will be maintained under variations in diameter resulting from temperature changes.

There is provide, however, and preferably solely in the periphery of the head, a series of interrupted, generally longitudinal ports commedium. Thus, such medium will be supplied substantially at the burner oiitlt and be dis- 1 charged therefrom as multiplestreamsthrough charge end and displaced from the inner surface of said casing member to afiord space for receiving an atomizing agent; and an atomizing head carried over the discharge end of the fuelsupplying member having a periphery conforming to the discharge outlet of the cap and juxtaposed thereto, said atomizing head being prof-Vidfid with loi'igittidinal channels-over its periphry which afford outwardly directed ports communicating with the said atomizing agent receiving space, said atomizing head having also a peripheral circular groove intersecting the said longitudinal ports intermediate their ends, and

the outer ports 21 of the respective ports; Y

will admit of producing the discharge in'various desired patterns.

Fuel is supplied to these streams, intermediate their discharge, from the pipe [9 through the bored portion 23 of the atomizing head 13 and radial fuel discharge ports 29 extending outwardly from the bored portion 23 and terminating in a peripheral circular groove 30 which efiects thei'nterruption in the discharge ports for greater portion of their surfaces the'ou'tgoing r stream of atomizing medium leavin'gthe port 26 of a longitudinal discharge port and securing a more complete mixture of the fuel therewith as discharged from the outer port- 2 1 of therespective ports discharging atomized fuel from .1 v

the nozzle head.

We claim: W

-1. An atomizing burner for fluid fue ls, com prising a tubular casing member and a tubular cap fitted over its oneend andaffording a dischargeputlet at said'end'; :an open-ended tubular fuel-supplying member coaxially mounted within the casing member and extending to its diszradiairueidisehargeports extending into the circuiar groo ebetween the longitudinal ports and communicating with the outer end of the fuelsupplying member whereby a single fuel discharge partway deliver fuel to two adjacent longitudinal discharge ports upon their respective opposite sides. 2. An atomizing burner for fluid fuels accordmg to claim '1, "wherein the discharge ports befyo'nd "their: intersections with 'the circular groove are of increased "cross-sectional area. .3. An a'tomizing head for fluid fuel atomi'zing burners, having longitudinal atomizing-medium supply grooves its periphery and circularly disposed thereover, and a circular groove about said periphery interrupting the atomizingmediumsu ply grooves, the said head being'bored axially to receive-fluid 'fuel, and fuel ports extending radially outwardly from the bore and fterminating in the said circular groove between respective stemming-medium supply grooves.

. ALEXANDER J. 'I'URPIN.

MELVIN J. PARKER.

REFERENCES CITED following references are of record in the file of. this ,patent:

UNITED STATES PATENTS

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