US1216928A - Furnace. - Google Patents

Description

- H. S. BENNETT.

FURNACE. APPLICATION FILED OCT-24. 19H).

Patented Feb. 20, 1917 I 2 SHEETS -SHEET I flows out through the stack.

HORATIO S. BENNETT, 0F CLEVELAND, 0HIC V FURNACE.

Specification of Letters Patent.

Patented Feb. 20, 1917.

Application filed October 24, 1910. Serial No. 588,725.

To all whom it may concern:

lle it known that I, HouA'rro S. BnNnE'rr, citizen ,of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Furnaces, of which the following; is a specification.

In the furnace industry it has been customary at the present time to employ practically one type of burncnwherein th lower part of the fire-pot at or near thqlllxi'ate is entirely or partially sealed with the burners arranged abovethe same and in a manner to project their'flaines against the inner surface of the fire-pot, all the air to support :eombustion and to form the mixture for the burning operation being furnished througlr the mixers of the several burners.

This quantity of air is insufiicient at any time to produce complete combustion of the gas even when a good mixture is formed within the burner itself, so that when the bottom of the fire-pot is closed, there is no additional air to support combustion in the furnace, and a great deal of unburnt gas This is especially true in natural gas burners for in some instances, it has been an actual fact that a flame could be sustained at the top of a chimney with a burner of this type 'showing that a large volume of the unburnt gas passes out at :this point.

, It is the objec'tofthe present invention, therefore, to provide a burner which is free and open at'the bottom and is used in conjunction with a spreading device or striker plate arranged above the burner and adapt ed to diir eebtlie flames toward the fire-pot "and atf tl er same time to restrict the flow for a small eonsumptionof fuel due to his of the burning mintureand'air at a point adjacent to the fire 'pot and above the burner, thereby preventing the loss of unburnt gas or infitljGlKflTOl'dS producing completecombastion at this point and raising the heat yield of the fuel. In act-pal practice the up" plieunt, who is engaged in the manufacture of furnaces and lun'ners, has found'that with his burner there is a greater heat yield construction. l

sage of unheated air between sections ofv 1 suitable "f ts-B5112 E with and forming a p flames produced by the several burner sections. In this way all air passing up into the heating drum is heated to a high temperature. I

The invention'comprises the construction parts hereinafter do i and arrangement of scribedand claimed.

Referringto the drawin s,-Figure]1 is a view of the burner partly n section; Fig.

2 is a sectional view of oneof the burner sections showing the main supply chamber lirseetlon and showing the burner mounted above a grate and illustrating the relation of the burner head with respect to the spreading plate'and the fire-pot; Fig 3 is a top plan view of the spreader-plate showing the mode of connection between theparts thereof and Fig. 4 isa view showing a furnace with parts broken away to showthe invention applied thereto. N

Incarrying out my invention any prefer ed form and construction of parts may be employed so long as they possess the necessary characteristics, but I have shownone forin inthe drawings which is highlyefi'ec tive in operation. and in such embodiment 1 represents the grate ,and 2 represents fthe In mounting the burner 1 prefer to employ; 7

an annular ring 3 which rests-uponthe open grate and supports the deuce." The burner which rests upon this ring consists of a main cast gas receivingmi supply chamber prefs erably c'omprismghalf-round portions Land a 5 eaclroi which is semi clrcular in form and hasupon its periphery a flange (land suitable opm-iings 7, for receiving nipples -8 upon which the burner sections are mounted. Each of these halt round gas receiving chaii berportions is provided witl"1* a,'gas inleteoilneetion 9 which leads to ofeat i nipple 8- is j'a jet nipplel0 having a gas eli ifiee '11. t til-bin, and connected by ai-trof a mixing tube 14 upon the end of which is a mixing casing member 15 which is preferably met-app a suitable a, soui'ee of" supplv. Mounted "up'o'n the-end It also one of the principal features of this inventiprr to use in conjunction with;

lhis arrangement a burner supplying a suba integral 15 member 15, throug lar and is provided with a flange 16 about which is provided. wan group of gas orifices 21. The edge'iif-thisburner plate seats against the slioul'clerformed by the flange 16 and it is screws 22 which ass through the casing mixing chamber and into threaded o eningsf: in the plate 17. The arrangement-F the "parts is such that air envelops each of the burner heads and supports-combustion. In this way the'flames are supplied with an ample amount of airfor takingeare of combustion. The burner sections are alsoarranged so that they form a continuous flame around the burner thereby heating all of the passingair.

In prder to retard the flowof the burning mixture and air and therebg to insure complete combustion and furt er in order to cause the'flames'to impinge directly against the fire-pot a suitable spreading or striker 'plate' is" provided; and it is composed of seini circular membe'rs23 and 24 which fit the two halfreceiving chamber sections and -rest upon the flanges G'at' the'ccnter; 'A. suitable semi-circular opening 25' is vided at thecenter of each-ofthese nc ers and for accommodating the gas-receiving chamber as above outlined. These half-sectionsiare'each provided with a downwardly extending fl ing tubes 14 and are secured together by lugs -26' p ro vided with openings 27 engaging pins 28 securedin the plates. The arrangen'ientof this 'lug-and-pin construction is such that there is a'lug carried'by each plate on the opposite side of the center with a pin oppositeso that when the platesare heirl straight edges edge to placed with" t edge 'andmbvedrslightlyaout of the same plane,flthe lugsmay be brought down upon thefpins so thatthe spreader willlbe'locked together upon the gas. receiving chamber. -Ea'ch h of this spreading, plate is pro vided with an upwardly inclined portion 29 terminating in 'afiat edge portion 30 which extends overthe burner heads and toward thefire-pot iand-serx 'es to retard. the flowof burning gas as rected against the fire-pot when the heat Q a a 1,210,923 r The burner plate iswith an inwardly heldiin place by two tl] striker plate and ang 24 which rests on the mix-.

I d i recting the flame and air and to direct the flames against the surface of the fire-pot.

of the flame willcausdari u pwardcirculation of air which enters free y through the grate and" passes up throughand with the I flames, the flow at the periphery of the striker plate and between it and the fire-pot-"m being'so retarded or restricted that complete cornbustion'is produced, and all the air entering the drum is thoroughly heated and none is'pe'r-mitted to Mass between the sections of flames unheated. By constructing'a burner in the manner .set. .orth and supporting it upon the ring which rests on the grate it may be disas- -sembled and removed from the. furnace readily to permit the use of solid fuel, the so parts being such'that the fuel pipes extend l up from the grate.

Having 1 described claim:- I a 1. In a furnace, a. fire pot, a striker plate extending within the, fire pot to a point near the interior wall thereof, and a burner structure having burner-orifices located to project the flames against the fire pot. and against the edge of the striker plate to prevent air from passing between the edge of the fire pot without coming in contact with a flame. 2. In a furnace, a fire-pot, a striker plate" mounted therein and having its edge terminating at a point near the fire pot, and a burner structure having burner orifices for projectingtheliri flames against the edge ofthe striker plate and thence throughthe v space between the edge of'the striker plate and the firep'ot;

m y invention, I

'3. In a furnace, a circular fire p0t, a. I

striker plate-having its periphery extending to a point. nearithe-fire pot, a burner comprising a. plurality of sections each having 1 a burner head with a grou i 'of burner'orifices for projectingflames against the am derside and near 'theperiphery of the striker plate and another group of burner a horizontally disposed groupof discharge 1,15 ,orifices' for direct-mgthe flame against the, fire potand a group of -dischargeorifices 1 V upwardly,-and ii-striker plate above the burner andhavinglitsupe g rlphery extending near the fire pot above 1 0 t is last named: burner .ori;fices sa1d orifices producing a substantially 'continuousiflaeme around the entireburner v t 5. In a furnace, a fire pot, a burner-supported near the bottom of the fire 13.01; inane:

comprising aplu ralityof bni'nersections each having a head'provided'with a. hori-.

zontallydisposed group of 'discha'r .ori-

'ficeslf'fofdirectifig thefl'ameagainstt am. y a groupof-discharge orifices di- 3? pot, and

rooting theflzune upwardly, a striker plate above the burner and having its periphery near the fire )ot above the last named orifices, said ori (res producing a substantially continuous flame around the entire burner, and :i downwardly extending flange carried by the striker. plate and supported upon the burner adjacent the burner heads.

6. In it furnace, a fire pot, a burner supported near the bottom .of'the fire pot and comprising a plurality of substantially rectangular burner sections ea'lfi having a horizontally disposed group of discharge oritially continuous fices for directing a substantially continuous flame against the fire pot and a group of discharge orifices directing a substanfiame upwardly, and a striker plate covering the burner and having its periphery extending near the fire pot above said last named discharge orifices.

In testimony whereof I affix my signature in presence of two witnesses as follows:

HORATIO S. BENNETT. Witnesses:

ALTON H. BEMIS, CHRISTINE H. TRESGH.

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