US569329A

US569329A - Apparatus for improving combustion in furnaces

Info

Publication number: US569329A
Authority: US
Publication date: 1896-10-13
Anticipated expiration: 1913-10-13

Description

(No Model.)

V TKM PEYNON. APPARATUS FOR IMPROVING GOMBUSTIONIN FURAIAGES. No. 569,329. Patented Oct. 13, 1896.

UNITED STATES PATENT OFFICE.

THOMAS M. EYNON, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR IMPROVING COMBUSTION IN FURNACES.

SPECIFICATION forming part of Letters Patent No. 569,329, dated October 13, 1896.

Application filed December 27, 1895. Serial No. 573,538. (No model.)

To all whont it may concern.-

Be it known that I, THOMAS M. EYNON, a citizen of the United States, residing in the city and county of Philadelphia,State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Improving Combustion in Boiler and other Furnaces, which improvement is fully set forth in the following specification and accompanying drawing.

My invention consists of a novel apparatus for improving combustion of boiler and other furnaces, by means of which the heat radiated from a chimney or stack, which is ordinarily wholly lost, is utilized to highly heat the air in contact therewith, said air being confined in a casing inclosing said stack and being afterward conducted therefrom to a suitable portion of the furnace, above or below the grate, either by means of a natural or forced draft, which latter may be induced either by a fan or steam-jet blower, or both.

It further consists of novel details of construction, all as will be hereinafterset forth.

The figure represents a vertical transverse sectional view of an apparatus for improving combustion in boiler and other furnaces embodying my invention.

Referring to the drawing, A designates the walls of a furnace, and B a boiler suitably supported therein, the boiler shown in the present instance being of the horizontal tubular type, although it is obvious that any desired construction of boiler may be employed or that a boiler may be dispensed with.

O designates the grate-bars, D the ash-pit, and E the steam-dome.

F designates the stack or chimney, which communicates with the outlet for the hot gases and products of combustion in any suitable manner and may be secured to the plate G, which rests on the furnace-walls A.

II designates an outer casing or shell which incloses the chimney F, said casing resting also on the plate G.

J designates a hood attached to the stack F so as to overhang the casing H, and thus prevent water, &c., from entering the space between the latter and said stack.

K designates a pipe having one end attached to the lower portion of the casing H, while the other end is connected to a steam-jet blower L, the latter having connected to its upper portion the valved steam-pipe M, which conducts the steam from the steam-dome E to said blower.

N designates a pipe leading from the discharge end of the blower to the ash-pit D, and it is obvious that, if desired, a branch pipe P, discharging above the grate and having the blast-gate B therein,may be employed.

Q designates a valve for the steam-jet blower, and R designates a blast-gate in the pipe K.

S designates a pipe leading from the casing H and having discharge-pipes T and U, which communicate with the furnace above and below the grate. Z and A designate blast-gates in said pipes S and T,' respectively.

V designates a fan-blower, which has a dischargepipe W leading therefrom into the upper portion of the casing H.

X designates a suitable partition which is to be interposed between the stack and easing at a point intermediate the top of the latter and the junction of the pipe IV therewith, said partition being dispensed with when the steam-jet blower alone is used.

0 designates a spiral plate of suitable construction which is to be interposed between the casing and stack, the function of said spiral plate being to retard the downward passage of thehot air from the upper portion of said casing to the pipes S and K.

The operation is as follows: The hot gases and products of combustion passing out of the chimney F highly heat the air contained between the latter and the casing H, and when the proper blast-gates are opened the hot air will be conducted by natural draft through the pipes K and S into the furnace, above or below the grate, or both, as may be desired, and a perfect combustion will be insured. By starting the fan-blower V or the steam-jet blower L the hot air will be supplied through the pipes S and K to the furnace, above or below the grate, or both, as is evident. It will thus be seen that by the above apparatus the highly-heated air can be introduced into one or both sides of the furnace, above or below the grate, or both, either by natural or forced draft, singly or both together, and it will, furthermore, be apparent that the principle of my invention is applicable to any construction of furnace which has a stack or chimney whereby the hot gases or products of combustion are conducted therefrom the heat ordinarily lost or wasted being utilized in the manner above described and a practically perfect combustion being attained, as is evident.

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

1. A furnace having a grate,a flue provided with a surrounding jacket forming an intervening air-space, a spiral plate located in said air-space, pipes leading from said jacket and having branches leading into said furnace above and below said grate, gates in said pipes, a boiler in said furnace having a steampipe leading therefrom, and a steam-jet connected with said steam-pipe, and discharging into one of said former-mentioned pipes, said parts being combined substantially as described.

2. A furnace having a grate, a flue provided with a surrounding jacket forming an intervenin g air-space, a hood on said flue covering the top of said air-space, a spiral plate located in said air-space, pipes leading from said jacket and having branches leading into said furnace above and below said grate, gates in said pipes, a boiler in said furnace having a steam-pipe leading therefrom, and a steamjet connected with said steam-pipe and discharging into one of said former-mentioned pipes, said parts being combined substantially as described.

3. Afurnace having a grate, a flue provided with a surrounding jacket forming an intervenin g air-space, a spiral plate located in said air-space, pipes leading from said jacket and having branches leading into said furnace above and below said grate, gates in said pipes, an airblast pipe leading into said jacket, a boiler in said furnace having a steam-pipe leading therefrom, and a steamjet connected with said steam-pipe, and discharging into one of'said former-mentioned pipes, said parts being combined substantially as described.

4:. Afurnace havinga grate, a flue provided with a surrounding jacket forming an intervening air-space, a hood on said flue covering the top of said air-space,'a spiral plate located in' said airspace, pipes leading from said jacket and having branches leading into said furnace above and below said grate, gates in said pipes, an air-blast pipe leading into said jacket, a boiler in said furnace having a steam-pipe leading therefrom, and a steamjet connected with said steam-pipe, and discharging into one of said former-mentioned pipes, said parts being combined substantially as described.

THOMAS M. EYNON. 'Witnesses:

JOHN A. WIEDERSHEIM, E. H. FAIRBANKS.