US173501A - Improvement in devices for supplying steam to boiler-furnaces - Google Patents

Description

C'. G. SCHLOTT'ER'BE'CK & `C. F. KNEISLY. DEVICE EOE SUPPLYING STEAM `To EOILER FURNACES.

Patented Eeb.15,1e7e.

figg-2 nVenoP Y.

ILPEERS. FHOTO-LITNQGRAPHEM WASHINGTON. Dv C.

PATENT CHRISTIAN e. SOHLOTTERBEOK AND CHRISTIAN F. KNEISLY, OF DAYTON,

- i OHIO. ,y

|MPRovrMrNI |N D'Evlcrs FOR SUPPLYING STEAM IorolLrReFuRN/icrs.

. Specification forming part'of Letters Patent No. 173,501, dated February 15, 1876-, application filed August 12, 1875. a

To all whom -it may concern Be it known that We, CHRISTIAN Gr. SCHLQT- TRBECK and CHRISTIAN F. KNEISLY, of Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Boiler-Furnaces; and we do hereby declare .that Vthe following is a full, clear, and exact description thereof', which will enable others skilled in the art to which it pertains to make and use the same, reference heilig had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Figure l is a longitudinal vertical section of a boiler and furnace, with improvement attached,'on line :v au Of Fig. 3. Fig. 2 is a transverse vertical section on y g/,ofFig l. Fig. 3 is a horizontal section on line z z of Fig. 1.

A represents anyordinary boiler-shell. vB is the tire-box; (l C, fines in the boiler. D is the bridge wall; E, grate-bars.

This inventionl relates to devices for promoting the combustion of fuel in the furnaces of steam-generators, by causing a more perfeet combustion of the gases generated therein;and ,it consists in the combination and arrangement of certain pipes for 'conducting steam from the generator to its furnace for the accomplishment of the purposes named,

' as will be more fully described hereinafter.

It is a well-known fact that in the burning of fuel in the furnaces of steam-generators in the usual manner, and when only what is termed a' natural draft is used, there is a great loss consequent upon the escape therebut which consists, in part, atleast, of unconsumed gases, which, if properly mixed with air or oxygen in the requisite quantities before leaving the furnace,`would be consumed, and thusbe made to produce large economy in the consumption Of fuel. l 1

The combination Vand arrangement of the parts composing this improvement are designed to produce the results-'above named; and to accomplish this we provide a series of pipes, a, made, preferably, of cast-iron, and which extend across the sides and-rear of the furnace and below the grates. The reason'for thus locating said pipes being, first, the placing'them in a position where they will not be destroyed by the intense heat generated in the furnace, and, second, placing them where they will receive a portion of the heat radiated from the fuel upon the grate, and thus admit ofthe steam which passes through them being superheated to some extent.

It will be seen by referring to Fig. 1 of the drawing, that the pipe cf, which passes across the rear of thefurnace, is inside of the bridge wall, and that the pipe a extends beyond it and into the hollow bridge wall. YVithin the space in said wall there rise two vertical pipes, a a, which extend upward sufficiently high to cause the rightangle outlets, which are placed upon their upperends, to be above the fuel upon the grates. The outlets of these rightangled portions have vertically elongated apertures, through which the steam passes, and is directed to` the center of the furnace.

1n the two front corners of the furnace there are placed vertical pipes a, similar to those described, except that their outlets are elongated horizontally, and are so placed that the steam issuing from them is also directed to the thus protected from the intense heat of thecentral and upper portions thereof.

Another important advantage arising from this arrangement is that the gases generated linthese remote portions'of the furnace are forced by the issuing steam to the center thereof, and are made to pass over the incandescent portion of thefuel, as a consequence of which they are ignited, and caused to aid in the generation of steam, instead of passing Oif in an unburned condition and thus wasted, as'

is the case in furnaces constructed without our Improvements.

We have shown our improvements as applied to an ordinary furnace, and to a two-flue boiler; but they are equally' applicable to that ners be caused to ascend within the furnace instead of Within the bridge wall.

In the present case, A represents a cylindrical boiler, having twodiues, C C, passing through it; B the furnace, in which the fuel is burned, and into which the steam is injected, and E the grates. l

One of the most important features of our invention consists in the fact that the discharge orifices of the steam-pipes are elongated, and their largest diameters placed in opposite directions, as a consequence of which the jets are made to act upon a much greater area of the surface of the lire-box, and to come in contact with a much larger portion of the gases contained therein.

The steam used in these pipes may be admitted at any convenient point by providing the place with a suitable connection -to which to attach it. t

Having thus described our invention, what we claim, and desire to secure by Letters Patent. is-

Vertical pipes arranged in the corners of a furnace, and having elongated discharge-orices, two of which are vertical and two horizontal, in combination with supply-pipes, arranged under the grate-bars of a furnace, substantially as and for the purpose set forth.

In testimony that We claim the foregoing as our own invention, we ax our signatures in presence of two witnesses.

'CHRISTIAN G. SCHLOTTERBECK. CHRISTIAN F. KNEISLY. Witnesses:

GEO. M. YOUNG, E. S. YOUNG.

Images