US189847A - Improvement in feed-water heaters for boilers - Google Patents

Description

r ZSheets-Sheet 1. A. T. DENISO-N.

` lFELIJ-WATER HEATER-S FOR'BOILERS. l

N 189,847 v Patented Apr'1124, 1877.

Ny PETERS. PHOTO-UTHOGRAFHER, WASHXNGTON. n C.

UNITED STATES PATENT CEEICE.

ADNA T. DENISON, OF MECHANICS FALLS, MAINE.

' IMPROVEMENT IN FEED-WATER HEATERS FOR BILERS.

' Specification forming part of Letters Patent No. 189,847, dated April 24, 18.77; application tiled 4 July 7, 1876.

.To all whom it may concern:

Be it known that I, ADNA T. DENrsoN, of Mechanics Falls, Maine, have invented a new i and useful Improvement in Apparatus for y for heating the supply-water for steam-boilers that is formed of a pipe or pipes, through which the supply-Water is conveyed tothe boiler, heated by the same tire by which the water in the boiler is heated; and consists of the peculiar heating-chambers hereinafter described, formed in the walls of the brick-work B, and combnstionchamher of the boiler, in which the said pipes are located, the heat from the tire reaching said pipes through apertures Iliade in the wall dividing the said tire-place and combustion-chamber from the said heating-chamber.

A represents a common steam-cylinder boiler, set in brick-Work B. U is the lire-place, the combustion-chamber extending along underneath the boiler, in the usual way. D and Dl represent end views ot' the chamber formed in the Walls of the brick-Work. This heating-chamber extends the entire length of the sides of the brick-work B, and across its ends, inclosing a space about equal in extent vertically to that of the lire-place and combustion chamber. Through their inner Walls a c are apertures. (Shown by the small circles ein Fig. 4, and at e in Fig, 3.) These apertures permit the ready transmission of heat from the lire-place and combastion-chamber to the heating-chamber D D. Within this chamber D Dl is placed a continuous pipe, or a series of pipes, E, through which the supply-Water for the boiler is to be forced. In the drawing a single pipe is represented, which enters the said chamber at the front end, on one side, as represented by f, Figs. 1 and It runs A along near the bottom of the chamber D to the rear end; then across said end, and back through and near the bottom of the chamber D to its front end; then, bending back upon itself, runs around the stack to its startingpoint; then, again bending, returns to the front end of side chamber D, and out of the brick\vorl; B, as represented at c. Water forced through this pipe will thuspass three times the entire length of the sides and end of the chamber. A greater or less numberof bends may be made, as may be thought desirable.

rlhe walls or 'partitions c a', between the cham ber and lire-place, may be of brick, built into and forming part of the general Wall of the lireplaee; or they may be built up independently after the pipe is putin place; or, again, they may consist of heavy ironplates, anchored into the wall, so as to be conveniently removed. Ot' whatever material formed, it is essential that these partition-walls should be pierced by a number of apertures of suitable size to permit the heat from the lire-place to penetrate freely'iuto the chamber, but, at the same time, not so large but that the saidv pipe shall be protected in the heating-chamber from disturbance or injury. The pipe is to be connected at one end with a force-pump, or other means of forcing water through it, and at the opposite end with the boiler.

It is obvious that this construction and arrangement of heating chambers and pipe will secure the heating of the supply-Water to any desired degree by the same fire by which the water in the boiler is heated, Without exposing the pipes to injury, and without cumbering the tire-place With their presence in it.

Water-heaters have been placed in cham bers formed in the Walls of the tire-places ot' steam-boilers, through which the products of combustion pass on their way to the smoke. stack, the said chamber thus constituting, in fact, a part of the flue. My claim is restricted to the special construction and arrangement shown and described, wherein the heater is located in chambers or a chamber formed in the walls ot' the fireplace outside, and forming no part of, the tlue, and communieating with `the lire-place or liuc only byapertures in the division-wall between the said chamber or chambers and the {ire-place or tine.

The special advantages of this location and arrangement of the pipes for heating the supply-Water for steam-boilers are, that While they are submitted to the action of the same tire by which the steam is formed in the boiler, they are, at the same time, not exposed to the direct heat of said re, by which they would be more rapidlyoxidized and destroyed. They are also out of the Way, and not eX- posed to accidental injury, as they would be if not inclosed in the chamber described. This arrangement also secures the heating ot' the supply-Water very economically and uniformly.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of' a steam boiler, lireplace, and Water-heater, the said heater being located in a chamber in the sides or ends of the brick-Work setting, said chamber forming no partot' the smokeflue, and communicating with the rc place by apertures through the division-Wall, separating the said chamber from the fire-place, all substantially as and for the purpose described; A Witness my hand this 30th day of June, 1876.

ADNA T. DENISON.

Witnesses:

G. L. REED, C. M. CRANE.

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