US669921A - Feed-water heater. - Google Patents

Description

w. A. GIBSON.

FEED WATER HEATER.

(Application filed June 16, 1900. (No Model.)

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WILLIAM A. GIBSON, OF MUSGATINE, IOWA, ASSIGNOR OF ONE-HALF TO JAMES w.

DE FORREST, OF SAME PLACE.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 669,92I,dated March 12, 1901.

Application filed June 16, 1900. berial. No. 20,605, (No modelJ To wZZ whom, it may concern:

Be it known that 1, WILLIAM A. GIBSON, of Muscatine, in the county of Muscatine and State of Iowa, have invented certain new and useful Improvements in Feed-Water Heaters;

and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawbeing admitted into thewater-space of the boiler, and the accompanying drawings illustrate the device as applied to afire-tube or.

locomotive boiler.

Referring to said drawings, Figure 1 is-a sectional elevation of part of a boiler with my improved feed-water heating device applied thereto and indicating, conventionally, a feedwater injector and water-supply tank. Fig. 2 is an enlarged sectional view through the heating device detached.

A designates a boiler of any ordinary construction, that shown being of the fire-tube locomotive type, having awater-space B surrounding the tubes, above which is the steamspace 0, and at the end of the boiler is a smoke-box D. Projecting into the steamspace B through the boiler-head is a horizontally-arranged tube E, which is closed at its inner end by an enlarged cap E, which has a central inwardly-projecting conical baffleplate f. The outer end of tube E within the smoke-box D is closed by a hollow head G, which is connected by a pipe H within the smoke-box with the water-space B near the bottom thereof, a stop-cock h being placed in this pipe H for thepurpose hereinafter explained. Extending through the head G and into the tube E is a pipe I of smaller diameter than the tube E. The inner end of pipe I lies close to the conical bafltle-plate f and directly opposite the latter, and the pipe I extends through the head G and through the smokebox D to the exterior of the boiler, where it.

is connected by a pipe J with an injector K or any suitable feed-water-forcing device, the water beingsu pplied to the injector from the tank WV. Pipe I is provided at a suitable point, preferably exterior to the smoke-box, with a check-valvej to prevent back pressure from the boiler. Preferably all the pipes 'within the boiler, and especially the parts within the steam-space, are lined or coated with zinc to preventcorrosion.

The operation of the apparatus is as follows: The feed-water is propelled through the pipes I and J into the tube E and discharged 1 against the baffle-plate f, the conical surface of which causes a spraying and dissemination of the water in head F, and this spray rebounds back into the tube E, and as both the bafile plate and the tube E are subjected 'to the intense heat of the superheated steam in the space 0 the dispersed water flowing through the tube E is immediately raised to a high temperature Which is maintained or augmented by its passing through the head G and pipe H to the boiler, since head G and pipe H are located in the smoke box directly opposite the outlets of the fire-tubes and subjected to the intense heat of the products of combustion escapinginto the smoke-box. The spraying of water caused by the baffle-platef and the sudden rise of the temperature of the water in the tube E create a partial vacuum within the tube E, which largely relieves the check-valve j of back pressure.

The stop-cock his preferably located within the smoke-box, and when this stop-cock is closed the heater will be out of action, and, if desired, the check valve j can be inspected without danger and the pipes I and J can be removed without arresting or in any way interfering with the ordinary action of the boiler.

As the water is discharged into the lower part of the boiler at a high temperature, there is no danger of foaming, and the sediment and refuse will be forced to the forward part of the boiler, where they can be more easily removed.

Whereupright boilers are used, the pipe H may be extended through the steam-space to the point below the water-line. Where two injectors are used, both of them may be connected directly to the pipe I, so that they can Work independently of each other or both together without interfering with the operation of the heater.

By this apparatus a continuous uninterrupted supply of hot water may be maintained to the boiler and the water be raised to a high temperature before it enters into the water-space of the boiler.

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

1. In a feed-water heater for boilers, the combination of the boiler, a tube arranged in the steam-space thereof and projecting through the walls of the boiler, a baffle-plate closing the inner end of the tube and a head on the exterior end of the tube; with a pipe connecting the outer end of said tube with the water-space of the boiler; a water-supply pipe extending through the head into said tube and to a point directly opposite and ad joining the bafi'leplate, and means for forcing water through said pipe into said tube, substantially as and for the purpose described.

2. The combination with a boiler, of the tube arranged in the steam-space thereof and projecting through the walls of the boiler, the head on the inner end of said tube provided with a conical baflie-plate, and a head on the outer end of said tube, a pipe connecting said outer head with the boiler and the pipe extending through the outer head into the tube to a point directly opposite the baffie-plate, for the purpose and substantially as described.

3. In afeed-water heater for steam-boilers, the combination with a boiler, of a tube arranged in the steam-space thereof and projecting through the walls of the boiler, the head on the inner end of said tube provided with an internal conical baffle-plate, a hollow head on the out-er end of said tube, a pipe connecting said outer head with the boiler below the water-level and the pipe extending through the outer head into said tube to a point directly opposite the battle-plate, a cheek-valve in said pipe and means for foreing water through said pipe into the tube, for the purpose and substantially as described.

4. The combination of a boiler, the tube extending into the steam-space of the boiler havinga head on its inner end Within the steam-space provided wit-h a battle-plate, and a head on its outer end, a pipe connecting the outer head with the water-space of the boiler near the bottom thereof, and a stopcock in said pipe; with a pipe extending through said outer head into said tube to a point directly opposite the battle-plate on the inner head, said pipe also extending through the smoke-box to the exterior thereof and connecting with a water-supply pipe, and a check-valve in the water-supply pipe, all substantially as and for the purpose described.

5. The combination of the boiler having a smoke-box, the tube extending from the smoke-box into the steam-space of the boiler having a head on its inner end within the steam-space provided with a baffle-plate, and an enlarged head on its outer end within the smoke-box, a pipe connecting the outer head with the water-space of the boiler near the bottom thereof, and a stop-cock in said pipe; with a pipe extending through said outer head centrally of said tube and to a point directly opposite the battle-plate on the inner head, said pipe also extending through the smoke-box to the exterior thereof and connecting with a water-supply pipe, a checkvalve in the water-supply pipe, and an injector for forcing water through said pipe, all substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

WILLIAM A. GIBSON.

In presence of JAMES W. DE FOREST, T. R. FITZGERALD.

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