US830833A - Oil-burning steam-boiler. - Google Patents

Description

PABNTEDSEPT. 11, '1906. T. W. HEINTZELMAN L J. G. cAMP.

OIL BURNING STBAMBOILBR. APPLIUATIQN FILED NOV.14.1005.

z SHEETS-SHEET 1.

' wrrwsssss N0. 830,833. PATENTED SEPT. 11, 1906.

T. W. HEINTZBLMAN &'J. G. CAMP.

" OIL BURNING STEAM BOILER.

APPLICATION FILED NOV.14. 1905. I

2 SHEETS-SHEET 2.

" Y TE i s'rA'frEs PATENT oEEIo E fI TAYLOR W. HELNTZELMAN AND JAMES e. CAMP, E sAoEAMENi-o,`

i I xcALiEoENr-A.

OIL-BURNlNG STEAM-BOILER.

Specification of Letters Patent.

Patented sept. 11, iee.

Application filed November 14, 1905. Serial No. 287,231.

i To a/ZZ whom it may concern:

Be it known that We, TAYLOR W. HEiNT- .zELMAN and JAMES G. CAMP, of Sacramento, p

means being`designed to attain completel combustion of the fuel within the fire-box and the-,application of the evolved heat to the entire heating-surface of the ire-boX without injury to the fire-box sheets or inducing leaky flues and withoutunduly heating the `front end or smoke-arch, thereby avoiding the objections heretofore encoun- -tered of leaky steam-pipes and tubes in front end.

A further and special object of our invention is to enable brick arches and walls of the various forms ordinarily heretofore employed to be dispensed with, thereby materially. re-

ducing the quantity of brick required.

The improvement claimed is hereinafter l fully set forth.

In the-accompanying drawings, Figure l is a vertical longitudinal central section throu h the fire-box and adjoining portion of te waist of a steam-boiler, illustrating an application of our invention; Fig. 2, a rear view in elevation of the same; Fig. 3, a vertical transverse section on the line a a, of Fig. 1- g and Fig. 4, a vertical section through the lower portion of the front wall of the fire-box, illustrating a modification of structural detail.

Our invention is herein exemplified as embodied in a locomotive-boiler of the Ordinar narrow and deep fire-box type 3 but, as wi l appear upon a consideration of its essential structural and operative features, it is not limited in application to this or any other special type or form of Steam-boiler, being adapted to'use in any of the various constructions which are provided with a fire-box or furnace rnd tubes or flues leading therefrom. In the instance herein shown the insidemiire-box l is of the usual form and is closed at its top by a crown-sheet 2 and surrounded by vertical water-spaces 3,- the bbttoms of which are closed by a mud-ring 4, as in ordinary locomotive-boiler practice. The outside fire-box 5 is connected to the waist 6,

through Which the 4tubes 7 pass from the tube-sheet 8 to 'a smoke-box of the usual form (not shown) at'the front end ,of the boiler.

In the practice of our invention the inside fire-box 1 is closed at' bottom by a sheet or plate metal box or casing 9, which corresponds substantially in general form and location with the ordinary ashan of boilers in will be herein Y which solid fuel is used an descriptively .referred to as the lbottom pan. The bottom pan 9 is closed at all points except. as to aiplurality of draft-openings 10, located in its its bottom, sides, front, and rear with a rebrick lining 11, which extends upwardly for a short distance at its sides and for a greater distance at its rear into the inside fire-box 1. l

In all oil-burning ap liances of the type in which a jet of atomize hydrocarbon is introduced into the fire-box ator near its rear end or that farther from the tube-sheet, so that ont wall, and is provided on the flame from the burner is projected in the same direction as the traverse of the draft-K that is to say, forwardly toward the tubesheet-it has been the practice in order to protect the tube-sheet and tubes from the direct action ofthe high heat of the ame, as

well as to direct the heat, as far andas uniforml as may be over Athe surfaces of the side, fiack, and crown-sheets of the fire-box, to locate one or more transverse brick Walls or arches in the fire-box, one of them adjoining or being located a short distance in the rear of the tube-sheet and below the tubes.

It will be obvious -that brick walls or arches with thepbject of not only dis ensing with the ordinary brick walls andare es, butalso of obtainin tos a more uniform and effective a plication o vthe heat from the burner to t e heating-surfaces of the fire-box than has usually been attainable when the arch is used, consists in combining with a re-boX-and a floor or bottom pan a burner which delivers its flame rearwardly or in opposite direction to the draft above said floor withoutV obstruction from arches, bridge-walls, or other analoous members, means for supplying air to thev e-box adjacent to the burner, and a drafty o enlng 1n the rear wall of the fire-box above t eilevel of the burner, through which a curren of air is directed upon the flame, which is thereafter caused to travel forwardly below the crown-sheet to the tubes by the draft through the same. Under this construction the hydrocarbon fuel is consumed in the fireboX, imparting substantially uniform heat to all the heatin -surface thereof without direct action of the ame from the burner upon the tube-sheet and tubes and without highly heating the smoke-box and contained steamp1 es.

,nder our invention we provide an oilburner 12, which may be of any suitable and approved construction, various types being familiar to those skilled in the art, and which is located in front of the fire-box with its dischar e or delivery nozzle 12a extendin rearwarfy and opening thereinto. Iny t e instance shown the deliver nozzle passes through an opening in the ont sheet of the bottom an 9; but it will be obvious that, if preferred, it may, as shown in Fig. 4, be led through a hollow stay or sleeve in the lower portion of the front Water-space 3, as has een done in a number of cases by us with equally satisfactory results in practice. Oil

is supplied to the burner through an oil-supply pipe 13, leading from a suitable tank or receptacle and controlled by a firing-valve '131), which is actuated by a hand-lever 13a through connections 14, 15, 16, and 16a. The oil is, as in ordin ary'practice, preferably heated by means of a superheater 17, through which the oil-supply pi e 13 passes on its way to the burner and W ich is supplied with steam from the boiler through a pipe 18, controlled by a valve 19, and is atomized and discharged into the fire-box by a jet of steam admitted to the burner through a ipe 20, controlled by`a cock 21. The detailbd construction of the burner and its accessories is not, as above indicated, an essential of our invention, and the same may be varied in the discretion of the skilled constructor without departure therefrom. rlhe burner shown is, however, one which is simple, durable, 'and inexpensive and is now successfully operating in regular service.`

A blower-pipe 22, controlled by a valve 23,

serves to maintain draft on the fire when the steam is shut off, and the exhaust-steam blast, which is operative in running, is consequently not effecting draft through the tubes.

'[he supply of air to the fire-box for thel combustion ,of the liquid hydrocarbon fuel-is effected below and at the sides of the burner' 12 through one or more lower draft-o eni'ngs 10, `formed in the front wallof the ottom pan 9. For convenience of construction, as well as for insuring proper distribution of. the incomin air,a lurality of draft-openings is provide and t ese are preferably formed of l I nary door-opening used with solid fuel conpassage, which f stitutes the u per air-suppl is controlled by a door 25, liaving a similar hinged door or trap 26, which covers a transverse opening in the door and is turned l to uncover said opening, .as shown in ig. 1. The deflecting-plate 27 is connected to the inside of the door and may be adjusted to the angle desired for downwardly deiiecting the incoming current ofiair. The specific construction of door, trap, and defiectin -plate herein shown is not claimed in and o itself as of our invention and'has been adopted by us as being one which is suitably adapted for the purpose.

It will be obvious that any other-preferred form of similarly-located air admission and deflecting devices may be employed in the discretion of the constructor Without" departure from the spirit and operative principle of our invention. i

In the operation of our invention the fiame of the mixture of atomized oil and steam which is delivered rearwardly from the discharge-nozzle'of the burner passes above the floor of the bottom an of the fire-box, and the draft of the eX aust, by which air is drawn in through the'draft-openings 10, beingin the opposite direction tends to raise the flame in its rearward traverse, in which it meets the oppositely-moving current of air from the upper air-supply passage 24, and thereafter passes forwardly through the firebox below the crown-sheet to the tubes. The oil is found in practice to be consumed in the inside fire-box with a very uniform a plication of heat to the heating-surfaces t iereof, and the flame produced, which is of a lemon color, is softand does not injure the crownsheet or tube-sheet or cause leaky tubes, a substantial advantage having been gained in this latter particular over appliances heretofore used in the same service.

Our invention has been ap lied and is new in service in connection wit i the -boilers of several locomotive-engines, thel construction used being in all essential )artieulars substantially the same as that flerein described and shown and has in regular service com- IOO plied with all the re uirements thereof and obviated objections which had been found to exist to a substantial degree in constructions theretofore used in similar service.

We claim as our invention and desire to secure by Letters Patent- 1. The combination, with a steam-boiler having a fire-box closed at bottom, of means for delivering a hydrocarbon flame rearwardly into the hre-box, means for establishing a draft of air into the fire-box adjacent to the delivery of the hydrocarbon flame thereinto, and means for admitting air directly into the rear of the fire-box and above the level of delivery of the hydrocarbon flame.

2. The combination, with a steam-boiler having a fire-box closed at bottom, of m'eans for delivering a h drocarbon flame rearwardly into the fireox, means for establishing a draft of air into the fire-box adjacent to the delivery of the hydrocarbon flame` thereinto, means for admitting air at the rear of the fire-box and above the level of delivery of the hydrocarbon iiame,. and means for downwardly deflecting the air admitted at the rear.. of the fire-box.

3. The combination, with a steam-boiler having a fire-boi( closed at bottom, of a hydrocarbon burnerV/f discharging rearwardly into the fire-box at the front end thereof,A the front of the fire-box being provided with lower draft-openings for the admission of air to the fire-box below and on opposite sides of the burner, and the rear wall of the fire-box having an upper air-su ply passage located Within it above the leve of the burner.

4. The combination, with a steam-boiler having a fire-box closed at bottom, of a hydrocarbonburner discharging rearwardly into the fire-box at the front end thereof, the front of the fire-box being provided with lower draft-openings for the admission of air to the fire-box below and on opposite sides of the burner, and the rear wall of the fire-box having an upper air-su ply passage located within it above the leve of the burner, and a door controlling said upper air-supply passage.

5. having a fire-box closed at' bottom, of a hydrocarbon-burner discharging rearwardly into the fire-box at the front end thereof, the front of the fire-box being provided with lower draft-openings for the admission of air to the fire-box below and on opposite sides of the burner, and the rear wall of the fre-bo havin an u per air-su assage ocate withiff it aboire the levefiifytl burner, and a deectinglate projecting in to the fire-box above the evel of the upper air-supply passage.

6. The combination, with a steam-boiler fire-box, of a bottom pan which closes the lower end of the fire-box, a hydrocarbonburner discharging rearwardly into the firebox, the. front wall of the bottom pan being provided with lower draft-openings, and the rear wall vof the fire-box having an up er airsupply passage above the level of the liurner, a door controlling said u per air-supply passage, and a deflecting-plhte rejecting into the fire-box above the level of) said passage.

7. The combination, with a steam-boiler fire-box, of a bottom pan which closes the lower end of the fire-box, a refractory lining The combination, with a steam-boilerlining extending partly into the fire-box, a u

hydrocarbon-burner located adjacent to the front of the fire-box, in position to discharge its Haine thereinto above the bottom of said pan, the front wall of said pan being pro- 1s' on the bottoms and sides of said pan, said

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