US295542A - Daniel mcbride graham - Google Patents

Description

(N0 Modl.)

D. MGRAHAM.

V V STEAM GENERATOR.

No. 295,542. Patented Mar. 25,1884.

N. PETERS. PhQwLiihognphor. wnilingfom B4 c.

7 UNITED STATES PAT T Orricn.

COMPANY OF V-ULOAN,

OF NEW YORK, N. Y.

ST AM-GENERATOR.

SPECIFICATIONforming part of Letters Patent No. 295,542, dated March 25, 18814.

Application filed May 29, 1883. (No model.)

To (ZZZ whom, it may concern:

Be it known that I, DANIEL MQBRIDE GRA- HAM, of Chicago, in the county of Cook, of the State of Illinois, have invented anew and useful Improvement in Steam-Generators; and

I do hereby declare the same to be described in the following specification and represented in the accompanying drawing, which is an elevation of a generator of my improved kind, except in having its outer casing or duplex airincluction jacket shown in vertical section.

The nature of my intention is defined in the claims hereinafter presented.

In the said drawing, A denotes the waterinduction pipe, which, after entering the case B at its lower part and projecting therein horizontally, as shown, is extended up ward vertically therein, and opens into a tubular coil or spirally-wound pipe, 0. \Vithin the said coil concentrically is a drum, D, with or into which at its lower end the coil communicates or opens.

Surrounding the coil 0, and extending below it, is another such coil, E, which opens out of the drum D at the top thereof. At its lower part the coil E communicates with. another such coil, F, arranged below the coil E, and opening at its lower end into a steam-drum, G. Concentrically within the coil F is the coil H of the heater, the induction-pipe of such coil\ H being shown at I. The coil H terminates at its upper end in ahorizontal pipe,K,wl1ich crosses the vertical axis of the generator and extends through its casing B in manner as represented. WVhere or about where the said pipe K intersects the said axis there is in the lower part of the pipe one or more holes, a. In practice I have in the pipe aclearer, which is shown in part at b, its office being to clear the hole of any carbonaceous deposit that may gather within the pipe in a manner to obstruct the outlet a. I

L and M are pipes extending from the steamdrum G, and furnished with waste-cocks c c.

45 The pipe N is the educt for the discharge of steam from the drum, condensed steam or water being extracted from the drum through. the pipe M. The case B is provided at top with a chimney or discharge-flue, B, and is 5o surrounded by a duplex air-jacket composed in part of two concentric casings, O and P, erected on the base S of the case B, and arranged as represented. The casing 0 does not extend up to the top T of the air-jacket. The

air for promoting combustion of the gas gen erated within and discharged from the heater enters the jacket through holes in the lower part of it, (shown at d (1,) and after circulating within the said jacket escapes therefrom through holes 6 e, &c., in the case B. 6

WVithin the coil H isadeflector, U, upon the top of which, when the generator is in operation, a jet of flame strikes, and by which it is deflected in radial and other directions upon the coil H, the said jet being produced by gas issuing from the opening a and afterward inflamed.

In the operation of this steam-generator oil or liquid petroleum or other proper hydrocarbon is to be supplied to the coil H from a suitible reservoir or means and by the induct I. After passing through the coil, the combustible liquid is to be inflamed at its point of exit a, or as it may drop upon the deflector. The flame produced willsoon intensely heat the coil H and convert into gas the liquid received therein, which, under great tension will escape at the hole a, and, mixing with the air entering the case B through the holes 6, will heat the pipe A, the coils E and 13:, and the drums D and G, and convert into steam the water flowing through the coil E, and superheat such steam while it may be passing through the coil F and from thence into the drum G.

In practice a steam boiler or generator thus made has been found to operate to very great advantage and very economically. If desirable, an auxiliary steam-drum may be placed within the upper part of the case B and connected with the drum G by a pipe. So should it be desirable to have between the coils E and F one or more coils like those marked 0 and E, and one or more drums like the drum D, all being properly connected with each other and the coils E and F, so that steam may pass from the coil E through such additions to and Iii t0 the coil. F, such may be adapted as useful auxiliaries to my invention. r

Within the upper part of the generator, and Ice extending across it, is a chamber,VV, having a series of pipes, X, going through it from top to bottom of it. Thesepipes are open at their ends,in order for the smoke and gaseous products of combustion to pass off through them into the space Y,between them andthe flue or pipe R. A pipe, Z, provided with a damper, A, is to supply the chamber W with air. Out of the said chamber pipes B extend into the air-jacket. The air flowing through the chamber W into the air-jacket will be heated by the pipes X, and consequently, by means of the chamber WV and its pipes X, Z, and B, heat which would otherwise be lost may be utilized in heating the air necessary for combustion.

I claim- 1. The combination of the drumsrD and G and the coils G, E, and F, the coil 0 being within the coil E and around the drum D,and the coil F above the drum G, as described, with the heater composed of the pipes I and K, the coil H,and the deflector U, arranged with and within the coil F, as represented, the pipe K of such heater being provided with one or more jet-holes, a, as explained.

2. The combination of the case B, provided with one or more air-inducts, 6, with the drums D and G, coils O, E, and F, the coil O'being within the coil E and around the drum D, and the coil F above the drum G and the heater, as described, consisting of the pipes I and K, coil H, and deflector U, coil H and deflector U being within the coil F, all being adapted substantially as described, and the coil 0 furnished with an induct,A,for supplying it with water. i

3. The combination of the air-heating chamber W, provided with the pipes X and Z, and with conduits leading from it into the airjacket, as described, with such jacket, the case B, and the heater, the coils and drums arranged within such case, and adapted substan tially and to operate as set forth.

v DANIEL MCBRIDE GRAHAM.

Witnesses:

B. H. EDDY, E. B. PRATT.

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