US431458A - Furnace - Google Patents

Description

(No Model.)

P. A. GOODWIN.

FURNAGE.

No. 431,458. Patented July l, 1890.

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UNITED STATES PATENT OFFICE.

PETER A. GOODWIN, OVENSBOROUGH, KENTUCKY.

FURNAQE.

SPECIFICATION forming part of Letters Patent No. 431,458, dated .Tilly 1, 1890.

Application filed May 21, 1889. Renewed February 7, 1890. Serial No. 339,514. No model.)

To all whom t may concern,.-

Be it known that I, PETER A. GOODWIN, a citizen of the United States, residing at Owensborough, in the county di Daviess and State of Kentucky, have invented certain new and useful Improvements in Furnaces for Steam- Boilers; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to furnaces forsteamboilers or other purposes.

The object of my invention is to secure complete combustionof the fuel.

It is well known that in furnaces having forced orinduced draft through the fire-chamber a large per cent. of the gaseousA products of combustion pass oif unconsumed and are therefore wasted. This is due in part to the irregular quantity and improper condition of the air introduced. Good results have been attained by the introduction of air at the proper place in properly-regulated quantities and at the proper temperature; and my invention consists in improved means for heating air, regulating the amount to be used,

and to secure its introduction at the proper point to insure complete combustion.

In the drawings formingapart ot' this specieation, Figure l is a plan of a boiler and a section through the boiler-furnace on the line of Fig. 3. Fig. 2 is a longitudinal section through the furnace on the line z e' of Fig. 3. Fig. 3 is a transverse section through the furnace on the line y y of Figs. 1 and 2, the boiler' being shown in elevation; and Fig. 4 is an elevation of a coil or system of pipes suitable for use in the heater-boxes or the bridge-wall.

Ais an ordinary boiler, and B is the brickwork of a furnace therefor. Within the side walls of the-furnace I arrange preliminary heating-coils or systems of pipes C C. These coils are provided with valves c c, through the medium of which the admission of cold air is regulated. The coils or pipes communicate with heater-boxes D D, arranged abreast of the lower part of the boiler and forming the inner wall of the furnace. The heater-boxes communica-te with a chamber E in the bridge-wall of the furnace by means of pipe-connections d d. They also are providedwith lateral nipples or perforations d d for discharging air across the furnace just in front of and near the bridge-wall. The

, chamber E in the bridge-wall is also provided with perforations or nipples c c for discharging air into the furnace at vthe bridge-wall, where it unites with and consumes the escaping gases resulting from imperfect combustion. There may be arranged in the heaterboxes and in the chamber in the bridge-wall coils or systems of pipes, as shown in Fig. 4., or of any desired forni and construction, or either of these may be dispensed with and a coil alone substituted therefor.

In operation, the valves being open, air is admitted to the preliminary heating-coils C C in the walls of the furnace, and, becoming heated, passes onto the boxes D D to be further heated, and is thence discharged in part through pipes d d to the chamber E, where the heat is further augmented, and thence through perforations e e at the bridge-wall. Simultaneously air is discharged laterally across the furnace in front of the bridge-wall through nipples or perforations d d. The perforations through the walls of chamber E may be horizontally forward and backward vertically and at all angles between to mix the heated air with the escaping gases.

The invention described is simple and easily applied. It secures as complete combustion and prevents waste as well as the most elaborate and complicated contrivance hitherto devised. According to my plan any number of boilers may be set up side by side and all equally supplied with hot air to enhancecombustion. The lateral discharge of air from the heater-boxes D'D, in connection with the discharge in all directions from the chamber in the bridge-wall, produces such countercurrents as to secure a most perfect commingling of air with the products of imperfect combustion. Y

Having now described my invention, what I claim is- 1. In an air-feeding furnace for steam-boilers, the combination of preliminary heatingcoils arranged in the side walls, heating boxes or coils connected with said heating-coils arranged abreast of the boiler and forming the inner wall of the furnace, and a chamber or coil in the bridge-wall communicating with IOO said heating-boxes provided with perforations for discharging hot air at the bridge-Wall, substantially as described.

2. In an air-feeding furnace for steam-boilers, the combination of preliminary heatingcoils arranged in the side Walls, heating boxes or coils connected with said heating-coils arranged abreast of the boiler, and a chamber or coil in the bridgeWail, the chamber and the heating-boxes being perforated, as described, to discharge counter-currents of heated air about the bridge-Wall, substantially as described.

3. The combination, in a furnace, of valved preliminary heating coils, heating boxes abreast the boiler, and a chamber in the brldge-Wall communicating With each other, the chamber and the heating-boxes being provided with openings to discharge countercurrents about the bridge-Wall of the furnace, substantially as described.

In testimony whereof I aiiix my signature in presence of two Witnesses.

PETER A. GOODWIN. Vitnesses:

JAS. H. PARRISH, K. GEIBEL, J r.

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