US1539420A - Gas burner - Google Patents

Description

May 26, 1925. 1,539,420

H. E. KERR GAS BURNER Filed Dev- 29, 1924 2 Sheets-Sheet 1 in vento@ HEKERR.

May 26, 1925. 1,539,420

H. E. KERR GAS BURNER Filed Deo. 29 1924 2 Sheets-Sheet- 2 H E. K E R R Patented May 26, 1925.`

HARRY E. kann, oF cLEvELANn, omo.

GAS BURNER.

Application led December 29, 1924. Serial No. 758,616.

To all lwhom t may concern.'

Be it known that I, HARRY E. KERK, a citizen of the United States, andresiding at Cleveland, in the county of Cuyahoga and State of Ohio, have invented cert/ain new and useful Improvements in Gas Burners, of which the following is a specification.

This invention relates to an improvement in gas burners, andimore particularly to jet burners of the type and kind disclosed in my application for Patent Serial No. 720,558 `filed June 17, 1924. In the present invention, my general object is to group the jets in a particular way to gain the maximum heating effects within a given area without causing Amalfunction in mixing and burning Operations at any one of 'the jets or co-acting pairs of jets, and a further object is to bring the separate sheetsor columns of fiame produced by each pair of jets into close proximity bot-h radially and tangentially in a circular burner to permit it to be used very effectively in a cylindrical heater, for example, a water heater having a plural number of concentric Water circulating coils su ported centrally above the burner, all su stantially as hereinafter shown and described and more particularly pointed out inthe claims. i

In the drawings accompanying this application, Fig. 1 is a top view of one form of gas burner embodying my invention, and Fig. 2 is a vertical section thereof'on line 2 2 of Fig. l. Fig. -3 is a top view of a modification of the lnvention, and Fig. 4 a

side elevation thereof.

In certain types of water heaters containing water circulating and heating coils or equivalent elements 1t is desirable to concentrate a large amount of heat in a small circumscribed space and area, and the present burner is designed to jet streams of air and gas into confluence at a plurality of places above the burner to produce a plural number of vertical sheets or columns of flame adapted to burn independently but in such close proximity to each other that the combined flames will be uniformly applied to the heating elements superposed above the burner. In some instancesseparate sets of coils or heating elements of different diam` eters are concentrically arranged, and the present burner is especially serviceable in that connection in distributing the flame to both the inner and outer coils or heating elements. Thus, referring to Figs. 1 and 2, the circular burner shown therein comprises a hollow cast metal body or ring 2 having a small hub-portion 3 at its center and hollow arms or spokes 4 extending in opposite directions from this hub tothe ring. An open boss 5 at the bottom of the central hub has an internal screwthread to permit a gas supply pipe 6 to be connected therewith, and the burner may be solely supported on this pipe if necessary. vThe top of hub- 3 is of conical shape or formed with reversely-inclined fiat faces 7 to permit a series of gas jets or nozzles 8 to be seated thereon at an angle of approximately forty-five degrees, and these nozzles extend radiallyoutward toward corresponding nozzles 8 seated in reverselyinclined position on fiat faced bosses 9 and 9 on ring 2. Each nozzle has a screwthreaded extension 10 at its base vwhich is formed with a gas l intake cavity 11 terminating in a short gas orifice y12 of small diameter axially eo-incident with the longer main bore 13 of the nozzle. One or more lateral openings 14 in the side wall of the base portion of the nozzle admit air to bore .13 and this air is discharged with the stream of gas passing through the nozzle, the combined stream of air and gas coming into forcible imp-act and commingling with a similar stream of air and gas discharged at the same high velocity from the reverselyinclined companion nozzle axially opposite thereto. As;l a result a spreading sheet of flame is maintained vertically at ri ht angles to the axis between and above t e mou-th ends of each co-acting pair of nozzles, and where a plurality of pairs of nozzles are disposed radially of the burner as described a plural number of sheets or columns of fiame are produced at spaced intervals radially of the burner approximately midway of the center and of the burner.

An additional number of spreading sheets of flame are. produced at spaced intervals above ring 2 by a second group of jets or nozzles 8, the separate sheets of fiame being caused to spread radially of the burner tothe outer boundaries f ward the other sheets of flame inside of the ring or circle by arranging the inclined jets or nozzles in pairs on tangen-tial lines to the circle. To that end ring 2 is provided with raised bosses 9 at its top having fla-t inclined faces to seat the nozzles,leach boss havingat 'least two nozzles extending at an inclination in opposite'directions or radially therefrom toward reversely-inclined nozzles on the adjoining bosses on ring 2. In the burner shown in Fig. l, two of the bosses marked 9 are placed diametrically opposite each other on ring 2 at right angles to the hollow arms 4, and each of these two bosses mount or carry three nozzles, the central nipple 8 on each co-acting with a companion nipple extending radially of the burner Jfrom hub 3, and the other two nozzles 8 extending from the opposite sides of the boss toward companion nozzles on the bosses marked 9 on the same ring. Bosses 9 mount only two nozzles, and it may be observed that the fio-acting nozzles S which project toward each other and the median line of the burner which passes t-hrough the hub and hollow arms 4 cause two streams of gas to commingle and spread directly above the bosses 9 which carry only single nozzles 8 extending radially toward companion nozzles on hub 3. As thus rela-ted the separate pairs of nozzles are permitted t0 function perfectly without interference with each other, while obviously closely grouped together, and the commingled streams of air and gases are also permitted to spread and burn freely without obj ectionable interference or results. In that connection it should be understood that each pairi of nozzles discharge a predetermined amount of gas and air into confluence which burns as a hollow column of flame of substantial dimensions. Apparently a certain percentage of unconsumed gases travel upwardly within the hollow body of flame until all of the gas is consumed, the air which is entrained with the gas atA each nozzle of the pair together with the surrounding air being adequate to produce perfect' combustion at remote points from the tips or mouth ends of the nozzles when the burner is operating at full force, that is, when the gas is turned on at maximum pressure. On the other hand when the gas is turned down and the pressure is reduced to a minimum the gas will burn blue in color in the formof a small bead at the mouth ot each nozzle.

In Figs. 3 Kand 4, I show a modified form of burner which is essentially the same as the burner described, the main differences being that ring 2 is o'r' larger diameter and a larger hub 3 of ring shape lis involved.

Three hollow arms or spokes 4' are also used instead of two, and the supply of gas is taken in through a lateral extension or boss 5 instead of at the center. Obviously, this form of burner permits a larger number of jets or nozzles to begrouped together on radial and tangential lines with similar operatingefeot and result but with greater F heat-ing capacity, comparing the two burners, ,unit for unit.

That I claim, is:

1. Agas burner, comprising a hollow ring having a circular hollow central part and a. plurality of complementary pairs of gas nozzles mounted radially in reverselyinclined position upon said ring and central part.

A gas burner, comprising a hollow ring having a hollow hub and hollow arms, a plurality of gas nozzles larranged in pairs in reversely-inclined position upon said ring, and a plural number of gas nozzles mounted in inversely-inclined relation in pairs opposite each other upon said hub and ring.

3. A gas burner, comprising a hollow ring having co-acting pairs of reverselyinclined gas nozzles extending upwardly therefrom at spaced intervals tangentia-lly of the ring, a plurality of gas nozzles at the center of said burner extending radially outward and inclined upwardly toward said ring, anda plurality of gas nozzles extending radially inward from said ring toward the central nozzles.

4. A gas burner, comprising a hollow gas ring having pairs of gas nozzles extending upwardly at an inclination toward each other on the ring and other nozzles extending toward the center of the ring, and still other gas nozzles at the center of the ring extending upwardly and outwardly at an inclination toward companion nozzles on the ring.

5. A gas burner, comprising a hollow ring and a central hollow hub in gas distributing connection, a plurality of gas nozzles extending radially outward from said hub, companion gas nozzles extending radially inward from said ring opposite said hub nozzles, and a plurality of pairs of gas nozzles mounted in reversely-inclined gas converging relation upon said ring on lines angularly related to said radially arranged nozzles. Q i l 6. A gas burner, comprising a hollow ring having ra-isedbosses thereon and formed with ahollow central hub in gas distributing connection with. said ring, a plurality of 4gas nozzles radially mounted upon said huh and extending upwardly at an inclination toward the bosses on said ring, a plurality of gas nozzles mounted upon said bosses and extending upwardly at an inclination toward each other in pairs annularly of the ring, and separate gas nozzles on a number of said bosses extending inwardly and upwardly toward the nozzles upon said hub.

7. A gas burner, comprising a. hollow.

ring having a central hollow hub and hollow spokes connecting said vhub plurality of pairs of gas nozzle and ring, a. s mounted 1n reversely-inclined position at spaced intered to bring uence above pairs of gas nozzles mounted in reverselv-inclined posit-ion radially of said hub and ring and arranged to b-ring separate stre-ams of gas into 10 confluence at isolated places between said hub and ring.

In testimony whereof I aix my signature. HARRY E. KERR.

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