US1431763A - Oil-burning-furnace front - Google Patents

Description

L sERvmE. OIL BURNING FURNACE FRONT. APPLICATION FILED JUNE I1, 1920 Patented Oct. 10, 1 922 3 SHEETS-SHEET vI.

Patented @ct. N1 1922.

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'OILBURNING-FURNACE FRONT.

Application filed June 11, 1920. Serial No. 388,172.

To all whom it may concern:

Be it known that I, THOMAS Snnvron, a citizen of the United. States, residing at Bethlehem, in the county .of Northampton, State of Pennsylvania, have invented new and useful Oil-Burning-Furnace Fronts, of which the following is a specification. It is essential in order'to secure the best results 'in an oil burning furnace that the air to promote combustion be admitted around the entire periphery of the burner, or the flame cone thereof without eddy cur- I rents due to narrow openings, when the air inlets are partially open, and the air going,

,to said flame cone, should travel in a continuous annular stream; It is also desirable that the air be given a whirling motion to insure an efiective commingling with the atomized oil and vvapor and that theair travel in short, direct and guided paths to said flame cone under all degrees of openings. There should also be provided a posi-',

tive control of the quantity of air fed to the burner, in conjunction witha fine degree of regulation, and to the above ends my invention consists of a novel construction of an oil burning furnace front suitable for use with both natural and forced 'draftembodying generally preferably three component parts,

a) a casing adapted to be fastened directly to the boiler or furnace front" and carrying the air inlet devices, comprising a novel construction and arrangement of vanes betw'een which air is admitted either 'by natural draft or by a forced draft to the atomized fuel, said vanes being so positioned as to give the incoming air a whirling motion in the same or opposite directions with respect to the atomized fuel, thereby insuring its proper commingling with the atomized particles of oil or other hydrocarbon fuel, (1)) a novel construction of valve pot capable of being longitudinally adjusted within said casing and (c) a novel burner supporting bracket and its adjuncts.

- It further consists of a novel construction of an outer casing adapted to be secured directly to the boiler or furnace front and. to enclose an adjustable valve pot, whereby a positive control for the quantityof airfed to the burner or flame cone with a fine degree of regulation is provided, and provision is'further made for shutting ofl completely the. air supply when the burner is shut down.

I and travellin preferred by me,

It further consists of a novel construction of a casinglhaving novel means for admitting air around the entire periphery thereof, the air being admitted axially of the burner in a continuous annular stream, in a w irling direction and in short, direct and guided paths to the flame cone, whereby a more complete combustion is effected than heretofore.

It further consists of a novel construction of a casing provided with an annular front valve seat and with annularly arranged vanes, whereby the air is given a .whirling motion in the same or opposite direction to that of the atomized fuel,'fto ensure a better 'commingling with. the atomized oil and vapour.

It" further consists of a novel construction of a valve pot having its forward end of conical shape and coacting with an annular valve seat on the outer enclosing casing.

It furtherconsists of a novel manner of mounting and actuating 'the valve pot with respect to the outer casingand the burner bracket and its adjuncts.

It further consists of'a novel actuating mechanism for said valve pot and itsfadj uncts, whereby I secure a positive control of the amount of air fed to the burner, with precise means of regulating such amount to the rate of fuel consumption.

It further consists of a novel construction of a burner supporting bracket upon which,

the burner and its adjuncts and the valve pot actuating mechanism are supported.

F or the purpose of illustrating my invention, I have. shown in the accompanying drawings forms thereof which are at present practice satisfactory and reliable results, :11- though it is to be understood that the. vari-' ous instrumentalities of which my'invention, consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents a front'elevation of an oil burning furnace front, embodying my invention, showing particularly the burner supporting bracket, the valve pot actuating mechanism and its supporting means.

Figure 2 represents'a top plan view of Figure 1, a portion of the casing being since they will give in 1 broken away to show them'anner of actuating the valve pot. t a

Figure 3 rep-resents a section on the line 33 of Figure 1, certain of the parts being shown in elevation.

Similar numerals of reference indicate.

lar portion or wall- 6 and the intermediate tangentially arranged vanes 4,- which are located or formed between the annular walls or portions 5 and '6, the general arrangement or collocation of said vanes, through which the air is admitted to the burner or flame cone thereof being understood from Figures 2 and 3.

The forward annular valve seat 3 may be formed upon the annular wall 5, which has its inner portion beveled to conform to the beveled valvular portion 7 of the valve pot, the latter comprising the rear wall 8 and the annular wall 9, from which said conical valvular member 7 projects, it being understood that the contacting surfaces between said valve pot and casing are machined to fit and that the walls 9 and 7 of said valve pot constitute a sliding or adjustable damper and control the inlet of the air throughthe vanes 4.

The vanes 1 as will be understood from Figure 1, are tangentially arranged so as to give the incoming air a whirling motion 40 in the same or opposite direction, as the tangential motion of theparti'cles of finely divided oil emitted from theatomizer. 10, to which the .oil is admitted by the supply pipe 11, which may -be centered in the air tube 12 by the spider 13, the inner end of said air pipe having the cone 14 attached there to, whose fuhction is that of a shield to prevent direct blasts of air on the flame and also to prevent carbonizationof oil on the burner tips. I have deemed it unnecessary to describe in detail the atomizer 10, as any suitable atomizer may be employed.

15 designates a conduit, 'whereby forced 55 draft may be directed to the vanes 4 when desired, it being apparent that. my novel device is equally adapted to a forced or natural draft. I

17 designates a transverse cross bar or burner supporting bracket having its ends bolted or otherwise secured either to the flange 18 (or bosses thereon) of the shell (see Figure 1) said. burner supporting bracket having the opening or passage 19, 65 for the reception of the air tube 12, and

' sired position,

having the forward and rearward extensions 20 and 21, in which the set screws 22 are located, whereby said air tube may be adjusted longitudinally and locked in any deit'being apparent that said extensions 20 and 21 form an elongated bearing for supporting said air tube, burner and their adjuncts, and that the entire outer periphery ofthe extension 20, in'conjunction with the inner wall 23 of the shell 2 form guiding bearings for the valve pot 8, as it is adjusted forwardly and backwar'dly, by the mechanism now to be described, reference being had to Figures 1 and 2, wherein I have shown a preferred form of the valve pot adjusting devices, although it is evident that other equivalent constructions may be employed, without departing from the spirit of my invention.

2 1 designates a rack bar having its inner end secured to the rear wall 8 of the valve pot, by any suitable means, as will be understood from Figure 2 and its buter end passing through a hole or hearing 25 in the cross bar or burner supporting bracket 17 and being supported therein, the underside of said bar having rack teeth 26 thereon in mesh with the pinion 27, which is mounted on the spindle or shaft 23, which has its inner end 29 stepped into the boss or bearing 30 as'seen in Figure 1 and its outer portion guided in the lug or bracket 31 andprovided with the hand wheel 32, whereby the pinion 27 can be readily rotated and the rack and valve pot reciprocated as a unit according to requirements. The collar 33 on the spindle 28 retains the spindle in its proper position, so that thepinion and rack properly mesh.

The rear wall 8' of the valve pot has a peep hole 33 therein, which is closed by the door 34, the latter having the lighting torch hole 35 therein, and said door being opened and closed according to requirements by the chain 36.

It is well known to those skilled in the art that when the burner is not lighted, oil is liable to drip from the oil burners or oil valves, when they have not been tightly closed and by my invention, I provide a means for catching said oil and conveying it outside of the combustion chamber through a leak off ,or drip having a plug 37 as seen in Figure 3, whereby any drip can be readily seen and any trouble of this character readily remedied. This prevents explosions when starting or relighting boilers from oil which may have leaked into'the combustion chamber duringa shut down.

While I haveshdivn my novel casing 131s attached to the furnace front 38, by means of bolts 39 passing through the annular wall ,5, these parts may be assembled in other equivalent means without departing from the spirit of my invention.

omitted, however.

The operation is as follows Before the boiler-is lighted, the valve pot should'be'in a nearly closed position'or adju'sted slightly to the right of the position seen in Figure 3 thereby'decreasing the danger of fiarebacks. The burner having been lighted, the desired adjustment of the valve pot can be efi'ectedtowards the position seen indotted lines in Figure 3,-by rotating the hand wheel 32, it being apparent that'the rotation of said hand wheel rotates the pinion 27,'which by its engagement with the rack teeth26 will cause the valve pot to move in the desired direction to the desired extent.

The valve. pot having its cylindrical wall 9 functionin as a damper is shown in Figure 3 in fu lines in its extreme left hand or closed position and is shown in dotted lines in its extreme right hand or open position, and it will be apparent that the axial longitudinal. movement of the valve pot is effected through the rotation of the handwheel 32 thus giving afiner degree of adjustment and a positive method of'locking in anyposition.

It will be apparent that a certain amount of atmospheric air is drawn in through the air tube 12 and commingled with the hydrocarbon or other fuel discharged through the atomizer 10, and when the valve pot is moved to the right of' the'closed position seen in Figure 3, so as to unseat'the valvularmember 7 from its seat 3 on the wall 5,

it will be apparent that a predeterminedamount ofair will be admitted through the vanes 4 in a whirling motion to the desired points, and will be effectively commingled with'the atomized oil and vapour, the airgoing to the flame cone in a continuous annular stream and there being no gaps.

' It will be further apparent that the incoming air'has short, 'direct, and guided paths to the flame-cone through all'degrees of openings, and there is, ,npon the proper manipulation of the valve pot a positive control of the quantity of air to the burner through the vanes 4 with a fine degree of regulation.

When the burner is shut down, it will be apparent that the air supply can be completely shut off therefrom by advancing the valve 'pot into the closed position seen in full lines in Figure 3, and it will be further apstood from Figure 1, it willbe apparent that less eddy currents, due to narrow openings, when the valve pot is partially opened, are created, and the air-going to the flame cone will travel in a continuous annular stream.

It will be further apparent that my novel construction of furnace front may be used without alteration with natural draft or in a closed fire room under pressure with forced draft through the ducts or conduits 15.

When my novel; device is used with 'a forced draft, the quantity of air is obviously regulated by the position of the valve pot and when said valve pot is in its closed position seen in Figure 3,-all air to the burner is shut ofl and the duct connection 15 leading from the blower (not shown) is closed, thereby decreasing the quantity of air the blower has to discharge. v-

' It will be apparent that upon the removal of the burner supporting bracket, the valve pot and the various burner parts are readily disassembled or dismantled and access to the combustion chamber44 is obtained through a free opening, which is inpractice twenty inches or more in diameter.

It will be apparent that by the inclination or positioning of the vanes 4, as will be understood from Figure 1, the incoming air "is given a whirling .or tangential' motion, thus insuring an intimate commingling with the atomized fuel, and it is obvious that said vanes may be collocated with the burner so as. to give the incoming air a whirling mo-' tion in the same direction as the tangentialmotion of the atomized fuel, or, if desired, the vanes may be so collocated that the incoming air will have a direction or a whirl,-

. ing motion opposite to that imparted to the atomized oil, whereby in either case a very intimate commingling of the atomized fuel and air will be effected. I

It will be apparent that while I have shown the preferred manner of assembling the casing, valve pot and burner supporting bracket, which will be found to be very eflieient and satisfactoryin practice, that slight changes may be made in the manner of as semb ing these elenientspwithout departing from the spirit of my invention.

It will now be apparent that I have devised a novel and useful oil burning furnace front, which embodies the features of statementof the invention and the above description, and while I have, in the present instance, shown and described-a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be understood that the same is susadvantage enumerated as desirable in the sition, and actuating means for said valve pot, comprising a rack attached thereto, a'

ceptible'aof modification in various particu casing and having a forward extension on lars without departing from the spirit or scope of the; invention or sacrificing-any of its advantages. I

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of' the character stated, a casing adapted to be attached to a furnace front, and having an annular valve seat, and annularly tangentially arranged vanes,- a valve pot slidably mounted in said casing, a conical valvular forward end portion on said valve pot'adapted to engage said seat when said valve pot is in its extreme forward pop'inion in mesh with said rack. a transverse supporting bracket-secured to the outer portion of said casingand a spindle rotatably mounted in said bracket on which said pinion is mounted.

2. In a device of the character stated, a valvepot comprising a cylindrical body or'tion havin a rear wall with an o enin p b 7 t therein, and a front conical valvular member, said valve pot being provided with actuating means, and its rear wall having a peep hole therein, said peep hole being closed by a door.

casing adapted to be attached to a furnace 3. In a .device of the character stated, a

front and having an annular front valve seat, annularly, tangentially arranged vanes, a

valve pot slidably mounted in said casing, a

burner supporting bracket mounted on said casing, an air tube supported by said bracket and having a cone on the inner end thereof, an oil atomizer supported within said cone, and actuating means for said valve pot comprising a rack attached thereto, a pinion in mesh with said rack, a spindle having its inner end stepped in a boss on said brhcket and carrying said pinion -and its outer end supported-in a lug carried by said bracket, the outer end of said spindle having a hand wheel mounted thereon.

4:. As an improved article of manufacture,

a burner supporting bracket comprising a transverse member having a passage through its central P01131011) and forward and rearward extensionsadapted to receive an air tube, oil burner and their adjuncts, a boss on said bracket having a stepped bearing therein, a lug on said bracket in which said.

I spindle has its bearing, and an opening in guiding the valvefp'ot rack which the rear wall of said valve pot is supported and guided, an'air tube also sup-' ported in said extension and having a cone on the inner end thereof, oil atomizing devices carried by said air tube, a rack extending rearwardly from said valve pot, a spin-' dle supported on said burner bracket and having a pinion on the inner end thereof in mesh with said rack, and ahand wheel on the outer end of said spindle for actuating said spindle, pinion, rack and valve pot in unison.

6. In adevice of the character stated, a casing having a front annular valve seat, and a series of annular,v tangentially arranged vanes, a valve pot located in said casing and having a forward conicalvalvvular portion adapted to coact with said valve seat, a burner supporting bracket mounted on said casing and having a forward extension on which the rear wall of said valve pot is supportedand guided, an air tube also supported in said extension and having a cone on the inner end thereof, oil atomizi'ng devices carried by said air tube, a rack extending rearwardly from said valve pot, a spindle supported in said burner bracket and having a pinion on the inner end thereof in mesh with said rack, a hand wheel on the outer end of saidv spindle for actuating said spindle, pinion, rack and valve pot in unison, internal stiffening ribs for said valve pot, an oil leak-off for said valve pot, and a peep hole in the rear wall of said valve pot pro,- vided with a'door for closing the same, said door having a torch opening therein.

7. Ina device of the character stated, a casin having front and rear annular'walls and a rearwardly projecting portion, inclined vanes annularly arranged between said walls, an annular valve seat on said front wall, a valve pot contained within said adapted to coact with said valve seat, a burner supporting bracket mounted on the rearwardly projecting portion of said casing, an air tube supported in said bracket, a

.cone attachedto the" inner end of said air casing and having its forward portionbearings in said bracket, a pinion carried by said spindle and engaging said rack, and at hand wheel for operating said spindle. Q

8. In a device of the character statedfa and adapted to be attached to a furnace front and havlng an annular valve seat, annularly, tangentially arranged vanes in said casing, a valve pot slidingly mounted in said casing adapted for forced or natural draft Which said pinion is mounted, a hand Wheel on said spindle, and aburner supporting bracket-carried by said casing in which said rack is guided and on which said spindle is mounted.

. 9. In a device of the character stated, a casing adapted to be attached to a furnace front and having a front annular valve seat, annularly, tangentially arranged vanes in said casing,.a valve pot slidingly mounted in said casing, actuating means for said valve pot comprising a rack attached there to, a pinion in mesh with said rack, a spindle .on which said pinion is mounted,.a hand Wheel on said spindle, a burner supportin bracket secured to said casing in Which said rack is guided and on Which said spindle is mounte an .air tube supported in said bracket, a cone on the'inner-end of said air tube, and oil atomizing devices located within said cone.

V 10. In a device of the character stated, a casing adapted for forced or natural draft and adapted to beattached to a furnace front and having an annular valve seat, air inletsin said casing, a valve pot slidingly mounted in said casing and having a forward conical valvular portion adapted to engage said seat, a bracket attached to the rear of said casing, a rack attached to said valve pot and slidingly mounted in said bracket, a spindle rotatably mounted on said bracket and a pinion on said spindle in mesh with said rack.

. THOMAS SERVICE. Witnesses: V

R. S. A. DOUGHERTY, D. J. OYER.

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