US282586A - Regenerator-furnace - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1. W. SWINDELL.

REGENERATOR FURNACE. No. 282,586. Patented Aug. 7, 1883.

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REGE NBRATOR FURNACE. No. 282,586. Patented Aug. 7, 1883.

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(No Model.) 4 Sheets-Sheet 4.

W. SWINDELL.

REGENERATOR FURNACE. No. 282,586. Patented Aug. 7, 1883.

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VILLIAM 'SVINDELL, OF ALLEGHENY CITY, PENNSYLVANIA.

REG E NERATOR-FURNACE.

SPECIFICATION forming part of Letters Patent No. 282,586, dated August '7, 1883.

Application filed OctJber 15, 1881.

T 0 aZZ whom it may concern.-

Be it known that I, \VILLIAM SWINDELL, of Allegheny city, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Regenerator-Furnaces; and I do hereby declare the following to be a full, clear, and exact description thereof.

I make use of a separate valve for the air and gas fines at or near their point of discharge to the stack. Heretofore with the old construc tion, in which the valve was placed in the common stack-fine, it often happened that when the waste products of combustion were pass ing out at one side of the furnace one set of channels or fines became extremely hot, while the other remained comparatively cool. The effect of this unequal temperature on the opposite sides of the walls of the furnace and its chambers and fines was very deleterious, and tended to the speedy destruction of the same; It is apparent that with one valve it was impossible to regulate the degree of heat in the separate fines. By my improvement I am e11- abled to regulate and eqnalizethe heat in the chambers and waste-fines by simply manipu lating the valves.

Another feature of my invention consists in forming a joint between the crown and side walls of the furnace, of a horizontal notched or serrated outline, so that if the 'wear of the walls causes them to shrink away from the crown, the crack thus made will be stopped by one of the overlapping bricks, and will not open clear through the wall.

To enable others skilled in the art to make and use my invention, I will now describe it by reference to the accompanying drawings, in which- Figure l is a vertical longitudinal section of a regenerator furnace. Fig. 2 is a vertical cross-section of the furnace 011 the line :0 w of Fig. 1.. Figs. 3 and 4 are details of construction. Fig. 5 is ahorizontal section on the line 9/ y of Fig. 1. Fig. 6 is a vertical section on the line z z of Fig. 2.

Like letters of reference indicate like parts in each. p

The furnace a is of the usual construction, having air and gas fines I) and 0, which enter the bed on a regular curve. The regenerators (Z, reversing-valves e, valve-chambers e, fines (No model.)

0 d from the valves to the regenerators, stackfiuef, and stack f are all of a common c011- struction and arrangement.

The arch of the generator (I is struck from the thick side walls, (1, and "does not bear its entire weight on the partition (1 which separates the fines, and consequently is not liable to fall in case of the shrinkage of the bricks and the giving down of the partition d from the intense heat:

As heretofore constructed, the valve which regulated the passage of the waste heat to the stack was placed in the stack-fiuef, beyond the ends of the separate air and gas fines d c, and, as before stated, it was impossible to regulate any variation of temperature between the two fines. The consequence was that it was necessary to have the air and gas fines of the same relative area as "the regeneratorchambers, so that when, by the reversal of the furnace, such fines were the outgoing fines, the volume of waste heat should beproportionate to the size of their chambers; otherwise an unequal heat existed in the said fines and their regenerator chambers, and such variation caused the cutting away of the walls on one side and their warping and shrinkage, and resulted in the speedy destruction of the furnace. This was often caused by the unequal burning out of the fines, which produced a dispropon tionate area therein, and resulted in the nnequal heating of the regenerator-chambers and fines just mentioned. In these furnaces the air-fines and regenerator-chambers are usually one-third larger than the gas-fines and chambers. To obviate this danger and to obtain the advantage of equal heat in both fines and regenerator-chambers, I have placed a separate valve, 9, in each fine. Incase of unequal heating of the fines and regenerator-chambers such unequal heating can be corrected and the temperature equalized by the adjustment of the valves. This is an important feature, because when one fiue gets hotter than the other it draws the current away from the other, and

so becomes more and moreheated and increases the evil. The mampnlatlon of the valves eneven when the exit-fines leading from the bed to the regenerator-ch ambers are worn into disproportions.

The crown i of the furnace is joined to the walls h by means of square-ended bricks l 2 3, placed in the arch with their ends resting on the wall, forming therewith a horizontal or nearly horizontal joint having notched or zigzag meeting'edges. Heretofore the corner between the arch of the crown i and the wall h was filled by an irregular-shaped brick called a skewbacld This made a straight joint on the dotted line w w, and the effect of the wear of the side wall of the furnace, which is very great, was to cause it to give down in front and open a straight wedge-shaped crack along the joint 10 10, through which the flame and heat passed. This increased the rapidity of the wear and necessitated rebuilding of the furnace often. By my improved construction the giving down of the wall is at first limited to the point of the brick 1, and when that is passed to the point of the second, and so 011, the succeeding bricks each interposing a barrier to the cracking and opening of the wall. 7

I do not herein claim the combination of the curved flues b 0 with a reversing regeneratorfurnace, as I reserve the same for a separate application.

What I claim as my invention, and desire to secure by Letters Patent, is v 1. A regenerator furnace having separate valves controlling the air and gas fines at their discharging-point nearest the stack, substantially as and for the purposes described.

2. A regenerator-furnace having the crown united to the top of the walls by a horizontal or substantially horizontal serrated or zigzag line formed by the ends of the outer bricks of the crown, substantially as and for 'the purposes described. i

In testimony whereof I have hereunto set my hand.

\VILLIAM SVINDELL.

\Vitnesses:

T. B. KERR, JAMES H. FORTE.

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