US642126A - Smoke-consumer. - Google Patents

Description

N0. 642J2fi. Patented Jan. 30, I900. J. JACKSON.

SMOKE CONSUMER.

I (Application filed Oct. 29, 1898.) No Mouel.) 2 Sheets-8heet I.

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SMOKE CONSUMER.

(Application filed Get. 29, 18984 wz'zriwasses ,Inu 7140/ THE News PETERS co, PHOTO-LITHQ, WASHINGTON. o. n

ilnrrr JOSEPH JACKSON, OF CHICAGO, ILLINOIS.

SMOKE-CONSUMER.

QPECIFICATIUN forming part of Letters Patent No. 642,126, dated January 30, 1900. Application filed October 29, 1898. Serial No 694,919. (No model.)

To (0 whom Til/(Ly concern:

Be it known that I, JOSEPH JACKSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Smoke'Consurners, of which the following is a specification.

My invention relates to certain improvements in smoke'consumers wherein a jet of steam carrying a current of air is mixed therewith and injected into the furnace at a suitable distance above the grate-surface, thereby commingling heated air and steam with the products of combustion' at such points that the complete combustion of the gases may be eii'ected in an economical and thorough manner.

Figure 1 is a longitudinal section of a horizontal tubular boiler of ordinary construction set in brickwork; Fig. 2, an end elevation, partly in section; Fig. 3, a horizontal section in line X X of Fig. 1, showing the furnace only; Fig. i, a transverse sectional elevation in line 3 y of Fig. 1; Fig. 5, an enlarged plan in detail of the steam, exhaust, and nozzle supply pipes and their connections; Fig. 6, an enlarged sectional detail of the nozzle, valve fitted thereon, and sleeve into which the nozzle projects; and Fig. 7 is a vertical transverse section through an intermediate brick furnace-wall with the air and steam nozzle connections leading to both adjoining furnaces.

I have illustrated and will now describe my invention as applied to an ordinary horizontal tubular boiler; but it will be understood that it may also be applied in like manner to vertical, locomotive, and marine boilers and steam-generating furnaces of various types.

As shown in Figs. 1, 2, and 3, the boilerA is set in walls 13, of brick, in a well-known manner, provided with a furnace O, gratebars D, a fire-bridge E, and having a flue F leading to the open tubular end of the boiler.

The side walls l3 and B are perforated, respectively, each to receive thimbles Gr, placed at suitable distances from each other uponan 'ascending line slightly above the fire-surface between the furnace-door and fire-bridge, thus providing clear openings through which nozzles II lead from a nozzle supply-pipe I, one end of which is con nected to a live-steam pipe K, leading to the steam-dome A, and the other end of said supply-pipe being connected by a T connection Z to an exhaust-steam pipe L, leading directly to the exhaust-port of an engine, the T connection Z being also fitted with an exhaust-overflow pipe L, leading at right angles from the exhaust-steam pipe L, thus conducting the exhaust-steam primarily to the nozzles when there is an inducing-draft in the furnace and allowing it to escape when not thus controlled through the overflow-pipe L to the atmosphere.

The live-steam pipe K has a steam-cock K, by means of which the steam may be first let into the nozzles from the boiler until the fires are well under Way and the engine is running and then turned off and the exhauststeam admitted through the stop-cock Z from exhaust-steam pipe to'the nozzle supply-pipe, thus economizing steam by employing the exhaust to both heat and inject the air through the thimbles G into the furnace, it being known that cold air alone admitted into the furnace to commingle with the heated gases will cool them below the degree of temperature for complete oxidation.

The open outer end of the thimble G is fitted with a disk damper M, perforated centrally to fit and slide longitudinally on the nozzle, as shown by enlarged detail in Fig. 6, the ends of the said thimbles being thus adapted to be left entirely open, entirely closed, or partly closed.

When two or more boilers are set in brickwork benches having intervening walls B a longitudinal air-conduit pipe G is placed centrally therein and inclined rearwardly at an elevation slightly above the fire-surface, and lateral thimbles leading therefrom extend into the inner sides of the two adjacent furnaces.

A steam-supply pipe I and a suitable number of nozzles, one for each thimble, pass from said supply-pipe partly through the thimbles, an air-space being left around the steam-supply pipe and nozzles to admit air into the furnace by means of the steam-jets issuing from the nozzles, which induce the has air-draft, warm the air, commingle the air with the steam, and force the mixture into the furnace above the fire-surface and at points suitable to supply the products of combustion with suitable gases at a temperature best adapted for complete oxidation.

In operation when the fires have been lighted and steam generated in the boilers the steam-cock K is opened sufficiently to start the air and steam into the sides of the furnace through the thimbles' and nozzles, which operation is continued, the damper being adjusted on the nozzles to regulate the proportion and amount of air and steam admitted to the furnace, until the engines are well under way, after which the live steam is either wholly or partly shut 0E and the exhauststeam is admitted by opening the exhaust stop-cock I, which allows the exhaust-steam to find the most direct vent stimulated by the draft from the furnace to the stack through the nozzles, thus drawing and mixing with it the air which surrounds the nozzles and within the sleeves.

My invention is especially adapted to boilers set in brickwork, as the thimbles may be fitted therein in a simple and inexpensive way, although the thimbles may be secured in a well-known manner, as shown in Fig. 6, by expanding and turning theiredges g through holes cut in the plates a a of the water-leg a of a metal-plate boiler-casing.

The exhaust-steam may be checked in the overflow-pipe L by means of a steam-pressure-regulating valve N, fitted thereon, as shown in Fig. 5, which will force the exhaust along the outside of the side walls of the turnace, nozzles thereon projecting partly into the said thimbles, a stop-valve to open and close said pipes, an exhaust-steam pipe leading from the exhaust-port of the engine to the said longitudinal steam-pipes and a stop-valve to close said exhaust-steam pipe, a dischargepipe leading from the exhaust-steam pipe and a pressure-regulating valve therein substantially as described.

2. In a double-shell boiler-furnace set in brickwork the combination with the dividing f u rnace-Wall, of an air-supply pipe placed longitudinally therein above the fire-surface of lateral thimbles leading from said pipe on each side directly to the interior of the furnace, of a steam-pipe located axially in said air-supply pipe and nozzles leading from each side thereof and located to pass axially into said lateral thimbles to the middle part thereof, substantially as described.

JOSEPH JACKSON.

Witnesses:

WM. I-I. ROWE, W. G. ATCHISON.

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