US1728011A - Centrifugal fluid-fuel burner - Google Patents

Description

Sept. 10, 1929. J. J. SIMMONS ET AL CENTRIFUGAL FLUID FUEL BURNER 2 Sheets-Sheet 1 Filed June 15, 1928 INVENTORS lMMO/VS,

V ATTORNEYS.

Sept. 10, 1929- J. J. SIMMONS ET AL CENTRIFUGAL FLUID FUEL BURNER Filed June 15, 1928 2 Sheets-Sheet 2 L/V/YEX INVENTOR5 JOHN J 5/MMO/V ATTORNEYS.

Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

JOHN J. SIMMONS AND .RALPH J. DELANEY, OF PHILADELPHIA, PENNSYLVANIA, AS- SIGNORS OF ONE-THIRD TO JOHN N. M.SHIMEB, OF PHILADELPHIA, PENNSYL- VANIA.

Application filed June 15,

Our invention relates to a new an useful centrifugal fluid fuel burner having a novel draft regulating apparatus wherein a plurality of casings is employed, each casing having independent draft controlling means therefor.

Our invention further relates to a novel burner of this character and its adjuncts wherein a uniform, circular, horizontal 1O flame of a relatively large area is produced and wherein the fluid fuel is finely atomized and thoroughly consumed to provide maxi mum heating efficiency with a minimum consumption of fuel.

Our invention further relates to a novel burner of the character stated wherein a uniform controllable air current is supplied to the flame at its outer and inner portions to insure the complete and thorough combustion of the fuel used.

Our invention further relates to a novel burner having a gauze screen below it whereby all danger of, what is commonly known as ash pit fire and explosion is completely eliminated.

Our invention further relates to a novel burner and its adjuncts of an extremely simple construction wherein the number of parts is reduced to a minimum so that the cost of assembly, maintenance and repair is greatly reduced.

To the above ends our invention consists of a base. an inner casing supported thereon. a motor yieldably supported within said inner casing, primary air inlets in the lower portion of said casing, a head and a conical cup shaped member carried on the end of the motor shaft and adapted to be revolved thereby. means for conducting fluid fuel into said cup shaped member, an outer casing surrounding said inner casing below said bafiie plate and above said primary air inlets. a bafiie plate overhanging said outer casing. secondary air inlets in the lower portion of said outer/"casing, control means for said secondary air inlets, and means for supporting said outer casing in position.

Our invention further consists in providing our novel burner with a screen of gauze or the like, intermediate the inner and outer CENTRIFUGAL FLUID-FUEL BURNER.

1928. Serial No. 285,510.

casin and above the motor to prevent the ignition of any unburned gases which might accumulate in the lower portion of said inner casing, thereby eliminating the danger of ash pit fire and explosion.

Our invention further relates to various other novel features of construction and advantage, all as will be hereinafter enumerated and described, and pointed out in the claims appended hereto.

For the purpose of illustrating our invention we have shown in the accompanying drawings one form thereof which is at pres ent preferred by us, since the same has been found in practice to. give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which our invention consists can be variously arranged and organized and that our invention is not limited to the precise arrangement and organizaton of the instrumentalities as herein shown and described.

Figure 1, represents a vertical sectional view of a draft regulating apparatus for a fuel burner embodying our invention, certain parts being shown in elevation.

Figure 2, represents a section on' line 2-2 of Figure 1. k V

Figure 3, represents a section on line 33 of Figure 1.

Referring to the drawings, in which like reference characters indicate like parts, 1 designates the base or other suitable support on which our novel burner is installed, and which may rest on the cellar floor 2 or the like, to which it is anchored in any suitable manner. Supported on the base 1 and secured thereto in any suitable manner is the inner burner casing 3, provided with the lower primary air inlets 4 and the upper flared rim 5. Within the inner casing 3 and supported on the base 1 is the spring 6 or its equivalent, which in turn resiliently supports the electric motor 7, provided with the shaft 8 to which is secured the upper disc 9 95 by the nuts 9", juxtaposed cup shaped member having the contour of an inverted frusto-conical head 10-, said motor being energized by the electrical conductor 12.

The cup shaped member 10 is composed of with the flared upper rim 20, which is juxtathe inverted frusto-conical wall 13, the lower end portion 14 of which is turned upwardly to form the annular channel 15, whic posed to the offset flared rim 5 of the easing 3, above described. To the lower portion of the inner casing 3, and coinciding with the primary .air inlets 4, is secured the damper 2O composed of an annular band or ring having spaced openings 21. The ends of said band are. secured together by the bolt or rivet 22 passing through the lugs 23. Byv revolving thedampeig 20 around the inner casing 3, the primary air inlets or ports 4 maybe completely or partially opened or closed at will, as will be understood fromI-Figures land 3.

Surrounding the inner casing 3 is the upper outer casing 24 having thesecondary air inlets 25 which are regulated by the rotary damper 26, having the openings 27 said damper being mounted on the casing 24 in the same manner as the damper 20 heretofore described. The casing 24 is supported on brackets 28 bolted to the inner casing 3 by the bolts 29 as will be understood from Figure 1.

A screen of gauze or the like 30 is interposed between the outer casing 24 and the inner casing 3, at any suitable point above the motor 7, to prevent a flareback within the inner casing 3, due to the accumulation of unburned gases therein. A bafl'le plate 31 surrounds the inner casing 3 just below the upper flared rim 5 thereof, and is supported on the brackets 32 secured to the casing 3 by the bolts 33, and by the columns 34, resting on the upper edge of the neck ring 36 and the brick or clay lining 35, which latter is reinforced and supported by said neck ring 36 the lower channelled part 37 of which is formed integral with the boss 38 which engages the head of the supporting column 39, which rests in turn on the cellar floor or the like 1, as will be understood from Figures 1 and 2. The head 10 is securedto the shaft 8 by the spider 43 and the nut 44 in any suitable conventional manner.

The operation is as follows The fluid fuel 16 is fed preferably by gravity through the pipe 18 into the channel 15 of the head 10. The motor 7 rotates the head 10 and the disc 9 at high rate of due to the rising of the heated air through the stack, a current of air is produced within the inner casing 3, which travels upwardly in the direction of the arrows 42 and passes out through the opening 45 to commingle with theatomized fluid fuel emanating from the openin 40. The amount of air current thus produced is regulated by manipulating. the damper 20 in the manner heretofore described. To effect a thorough combustion of the fuel discharged into the "outer annular periphery of the circular flame thus produced, a secondary current of air rises upwardly in the outer casing 24, travelling in the direction of the arrows 46 and flows outwardly under the bailie plate 31, around and between the sup-- porting columns 34, where it commingles with the outermost peripheral portions of the flame and completes the ignition of the heavier particles of fuel and by supplying oxygen to the outer portions of flame,- produces a uniform thorough combustion, the amount of the secondary air current produced beingregulated by the damper 26 as is evident.

It will be apparent from the foregoing that by the provision of the inner casing 3 and the outer casing 24, we have provided a plurality of inner and outer air chambers, the inner chamber bein'g'in relatively close proximity to the motor, the burner and .mits the ascending air currents to flow around the outer edge or periphery of the baiiie 31 to commingle with the outer portions of the flame to promote secondary combustion, both of said air chambers being adapted to admit oxygen independently or simultaneously to the inner and outer portions of the flame emanating from the burner, whereby an adequate primary and secondary supply of oxygen is provided, to facilitate complete combustion.

It will be apparent that'the baflie plate 31 coacts with the outer air chamber and serves to facilitate commingling of the air from the secondary or outer air chamber to the outer portions of the flame emanating from the burner.

It will be further apparent that under some conditions, it will only be necessary to employ the air from the inner air chamber to cooperate with the flame emanating from issuing from the outer air chamber and that the rotation of the head 10 and disc 9, and under other conditions, it may be desirable to utilize simultaneously both the inner and outer air currents.

It will thus be seen from the foregoing that primary and secondary currents of oxygen can be admitted to the inner or outer portions of the flame emanating from the burner either independently or simul taneously at will.

The provision of the screen or gauze 30 serves as a complete preventative of any back firlng as s evldent, and 1n addltlon.

Having thus described our invention,-

what we claim as new and desire to secure by Letters Patent, is I 1. In a centrifugal burner, the combination of a vertical motor shaft, carryin a fuel cup, having a flared mouth, an' a baflie disk above said mouth, an interior casing having a flared upper end surrounding said mouth and adjustable air inlets in its lower end, a baffle plate surrounding said casing near its upper end, and an exterlor casing surrounding said interior casing and provided with adjustable air inlets in its ower end, the open upper end terior casing lying below said bafiie plate. 2. In a centrifugal'burner, the combination of a vertical motor driven shaft, an inverted frusto-conical fuel cup, having a flared mouth, carried by said shaft near its upper end, a baflle disk carried by said shaft above said mouth, an inner casing surrounding said shaft and cup and having a flared upper end surrounding said mouth,

an outer casing surrounding said inner casing with its open upper end below said flared upper end, and a baffle plate surrounding said inner casing and projecting over but spaced from said open u per end.

- JOHN J. SIMM NS.

, RALPH J. DELANEY,

of said ex-

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