US2161221A - Oil burning apparatus - Google Patents

Description

vJung: 6 1939.- I R. w. BECK.ETT 7 OIL BURNING APPARATUS.-

Filed Aug. 11, 1936 2 Sheets-Sheet 1 VENTOR ATTORNEY J 1939- R. w. B ECKETT I OIL BURNING APPARATUS Filed Aug. 11, 1956 '2' She ts-Sheet 2 \D 58 in 40 6/ 8%H J6 l A 4 26 6 Z7 57 42 1 a I .H M Z8 /0 4' 5 \30 35 7 6 J WVENT0R ATTORNEY Patented Janet, 1939 011. BURNING APPARATUS Reginald W. Beckett, Rocky River, Ohio, assignor to Cleveland Steel'Products 'Corp., land, Ohio, a corporation of Ohio Cleve- Application August 11,1936, Serial No. 95,396

- Claims. '(01. 158-4) This invention relates to oil burning apparatus,

and more particularly to oil burning apparatus of the rotary type in which combustion of the fuel mixture is initiated adjacent the combustion 5 chamber wall of the furnace.

One of the objects of the present invention is to provide new and improved oil'burning apparatus of the rotary wall flame type which is so constructed that more efiicient combustion of the fuel can be obtained.

Another object is to provide oil burning appa ratus of the wall flame type with a fuel intercepting member of improved construction which I is economical toinanufacture and which is efflll' cient in its operation.

A further object is to provide oil burning apparatus of the wall flame type with flame deflecting elements of new and improved construction. go With the above and other objects in' view, which will be apparent from the following detailed description, the present invention consists in certain features of construction and combinations of parts to be hereinafter described with reference to the accompanying drawings, and then claimed.

In the accompanying drawings which illustrate a suitable embodiment of the present invention, Fig. 1 is a side view of a furnace having the oil burning apparatus of the present invention incorporated therein, a portion of'the furnace beingshown in section,

Fig. 2 is an enlarged vertical elevation looking from the front of the furnace, but with the furnace being shown in section,v

Fig. 3 is an enlarged horizontal section taken approximately on line 3-3 of Fig. 2, and with the fuel intercepting ring and deflector elements removed,

Fig. 4 is aperspective view of one of the flame deflecting elements,

Fig: 5 is a plan view of the oil burning apparatus taken approximately on line 5-5 of Fig. l,

and

Fig. 6 is a vertical section taken approximately at right angles to the view shown in Fig. 2.

Referring to the accompanying drawingsin In a copendingfapplication Serial No. 93,395

55 flied on August 11, 1936, I have described'indetail the manner of mounting the oil burner unit in the furnace unit. v

The furnace unit comprises an annular shelllike structure A within which the burner unit is assembled as a unitary structure, including a .5 supporting base I, having a horizontal top portion 2, depending side portions 3 connected by a depending rear portion 4 and an open front portion 4a. The supporting base I, as shown in Figs. 1, 2' and 6 is supported on a bottom portion 10 B of the furnace unit, the open end portion of the base I extending below and beyond a removable wall portion 0 of the furnace unit.

Thetop portion 2 is provided with an opening 5 therethrough substantially coaxial with the furnace chamber D, and seating upon the upper portion 2. is a sheet of insulation 6 having-an opening I coaxial with the opening 5.

An' annular plate 8 is supported by the sheet of insulation 6 and is provided at one portion ,0 with an arcuate extension 8 abutting the wall member C and at other portions with spaced radially extending portions I0 which abut the furnace wall to align the casting l within the furnace unit, The plate 8 is rigidly mounted by means of bolts ll extending through the insulation 6 and the top portion 2. The plate 8 also has an opening l2 coaxial with the openings 5 and I, which opening is defined by an upwardly extending annular flange l3, the wall of the opening'having inwardly extending projections l4.

Secured to the under side of the plate 8 is an annular shell l5, having a circumferential bottom flange IS, the securing bolts l1 therefor extending through the flange I6 and having their heads supported on the projections l4. The casing or shell I5 is provided with an apertured web '18 terminating in an annular hub IS, the apertures 28 of the web l8 forming air openings which 40 I are adjustably controlled by a shutter 2|. -The shutter 2| is rotatably supported by an annular member 22 extending through the hub I8 and supported thereon by a-nut 23. a

The plate 8 is also formed with concentric inner and outer upwardly extending flanges 24 and 25. Engaged with the radially outer surface of the flange 24 isan upwardly extending ring or band 26 of heat resistant metal and engaged with the radlally inner surface of the outer flange 25 is a second ring or band 21 of heat resistant metal, which band is preferably of greater height than the band 26.- The bands 25 and 21 are provided with L-shaped stampings 28 secured thereto which seat upon the plate 8 as shown in Fig. 6. The annular space between the band 26 and shell- I is filled with refractory 29 to a level below the upper edge of the band 25, and the annular space between the bands 26 and 21 is also filled with refractory 33 to a level, somewhat below the upper edges of the bands 25 and 21, as shown in Fig. 6.

The space between the support I and the walls of the'furnace unit may, if desired be filled with a suitable insulation 3i, such as, for example, mineral wool, and the annular space between the furnace wall and the outer band 21 is preferably filled with an insulation 32, such as, for example, asbestos flour. v

Suspended from the shell i5 by means of brackets 33 is a driving motor 34 having a hollow shaft 35 projecting beyond the ends thereof. The upper endof the shaft 35 extends through the annular member 22 and is provided with a closure cap or head 31 which carries a plurality of radially extending tubes 38 that communicate with the hollow shaft 35. Secured to the head 31 by means of a cap nut 39 is a deflecting plate '40 having a plurality of fan blades 4i on its under side, the tubes 38 and plate 4! being disposed above the annular shell i5.

v is enclosed in a casing 43 and secured to the end of the motor 34 and has an inlet 44 which is con- I nected by means of a conduit 45 with control valves 45 and a shutoff valve 41, which, in turn is connected with a suitable source of oil supply (not shown). The valves 45 and 41 are supported on a bracket .48 secured to a cross-piece 49 extending between the sides 3 of the support I.

The cross-piece 49 also supports an electrical outlet box 59 and a transformer 5|, the leads for the motor being connected with the outlet box connections and surrounded by a conduit 52.

Fitting within the outer band 21 is an endless fuel intercepting member 53 of heat resistant metal which seats upon the refractory 33.

Associated with the endless member 53 are a plurality of deflecting elements 54, each of which is preferably formed of a single piece ofheat resistant sheet metal. Each of these elements is provided with a horizontal portion having projecting end portions 55, which are bent downwardly at right angles and formed with narrow slots 51 therein. Each element 54 is also provided with an inner, solid side portion 58, which is inclined downwardly, and with narrow. outer side portions 59, which are alternately inclined upwardly and downwardly as shown in Figs. 4 and 6.

The elements 54 are supported by the end. portions 55 in closely spaced relation, the bottoms ofthe slots 51 seating'on the upper edge of the ring 53, as shown in Fig. 6, the bottoms of the slots 51 spacing the horizontal portions 55 upwardly above the'edge of the flame ring 53 to provide passageways therebetween.

The fuel is-preferably electrically ignited by means of electrodes 8i extending through the hearth portion and provided with terminals 52 connected by conductors 63 with thetransiormer 5!, those portions of the electrodes which extend through the hearth being encased in suitable insulation material 54 mounted in preformed refractory segments embedded in the refractory 29 adjacent the inner band 26.

Each electrode 6i extends to a region above the endless member 53 and is formed with a reversely bent portion 55 having a tip 51 extending over the band 25 and terminating in spaced relation with respect to the flame ring 53 which is grounded. Each electrode is also inclined with respect to the radius of the band 25, as shown in Figs. 3 and 5, in the direction of rotation of the distributing unit, so that the electric sparks passing from the electrodes to the endless member 53 travel at least partially in the direction of air travel adjacent the endless member.

The band 25 is formed with a notch 58 which extends substantially to the refractory in advance of each electrode, as shown in Figs. 2 and 3, through which a portion of the air travels for passage between the electrode tips and member 53.

When there is a demand for heat, suitable controls, not shown, start the inotor 34 in operation and cause sparks to pass from the electrode tips to the flame ring 53. The rotating head causes streams of air and oil to discharge against the flame ring 53 where the oil is ignited and burns from the annular space between the member 53 and band 25. The flame heats the member'53 and deflector elements 54. and as these become hot, the oil and air become atomized and mixed through impact with the endless element 53 and vaporized, due to the heat thereof. The vaporized gases travel upwardly and; are deflected through the passageways 601 by the solid inner portions 58 of the deflecting elements 54, into the space adjacent the wall A, where they are further broken up by the alternating elements 59, combustion thereof then being initiated at the annular region adjacent the elements 59 and wall A. The elements. 59 of the deflectors 54,

after the burner is in operation, substantially assume a red glowing heat which materially assists in the vaporization of the gases and the burning of the same against the wall of the furnace unit;

Due to the action of the fan blades 4|, and the rotational movement of the air expelled thereby, the flame burning, during normal operation, from the region of the elements 59 and the wall A has a circular, wall wiping movement. The flame produced is bluish in color and quiet.

While the bands 25 and 21, and the member 53 are shown as being of circular shape for use in a circular combustion chamber, it is to be understood that they may be of oblong, square or rectangular shape, depending upon the shape of the combustion chamber in which the oil burner unit is to be used. Also, the mounting and supporting means for the casing l5 and motor 34 'derstood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined in the following claims. Y

What I claim is:

1. In oil burning apparatus of the rotary wall flame type having an upright combustion chamber wall and a centrally disposed rotary means for discharging oil and air toward said wall, a

, hearth and flame producing structure comprising a hearth body disposed below the path of discharge of the oil and air and extending from said v between, and horizontally arranged means disposed above said band in spaced relation for directing air and vaporized oil in a substantially horizontal direction outwardly over said annular chamber, said horizontally arranged means comprising a plurality of deflecting elements spaced in endwise relation with respect to each other, each of said elements including a continuous imperforate portion extending inwardly and downwardly with respect: to said band and an integral continuous imperforate portion disposed at right angles to and overlying said band in spaced relation.

v2. In oil burning apparatus of the rotary wall flame type having an upright combustion chamber wall and a centrally disposed rotary means for discharging oil and air toward said wall, a hearth and flame producing structure comprising a hearth body disposed below the path of discharge of the oil and air and extending from said rotary means to said wall, a one-piece, imperforate band of metal extending upwardly from said hearth for interceptingand, when heated, for vaporizing the oil discharged from said means, said band'being of uniform inside diameter throughout its height and being spaced inwardly of said wall to provide an annular chamber therebetween, and horizontally arranged means disposed-above said band in spaced relation for directing air and vaporized oil in a substantially horizontal direction outwardly over said annular chamber, said last mentioned flame type. comprising an impertorate portion having at one side an imperiorate extension disposed atan angle thereto, and a'plurality or ringers extending from the opposite side thereof at alternately opposite angles.

4. In an oil burning apparatus or. the rotary wall flame type having an upright combustion chamber. wall, an oil and air distributing device having a horizontal rotary head for projecting oil and air in a horizontal direction toward said wall, a hearth plate below said distributing device and having a central opening for said device, said plate having abutment means extending upwardly adjacent the periphery thereof, an endless band abutting said abutmentmeans, refractory material on said plate at each side of said band terminating below the upper edge of said band, and

' a second endless band of metal closely abutting said first band and seating on said hearth material, said second band extending upwardly to intercept theoil and air distributed by said device. 5 In an oil burning apparatus of the rotary wall flame type'having an upright combustion chamber wall, an oil and air distributing device having a horizontal rotary head tor projecting oil and air in a horizontal direction toward said wall, a

hearth member below said distributing device including a ring-like member extending upwardly adiacent the periphery thereof and in spaced relation with respect to said upright wall to provide an annular chamber therebetween and forinteroepting and, when heated, iorvaporizing the oil distributed by said head, and vapor directing means comprising a plurality of members supported on said ring-like member in endwise spaced'relation, each or said members having an imperforate strip portion spaced above said ringlike member and at right angles with respect thereto, an integral second imprforate strip portion extending inwardly and downwardly with respect to the inner face of said ring like member and a plurality of narrow fingers extending outwardly beyond the outer face of said ring-like member, certain .01 said fingers extending downwardly into said annular chamber and certain of said fingers extending upwardly with respect to and over said chamber.

' REGINALD W. BECKE'I'I.

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