US691250A - Glass-pot furnace. - Google Patents

Description

'N e9|,25o. 'Patented 1an. I4, |902.

H. L. nlxuN.

'IGLASS POT FUBNACE.

(Application filed June 4, 1901.1

2 Sheets-Sheet l.

(llo Nudel.)

i wess-as Patented 1an. I4, |902.

H. L. mxoN. GL'ASS POT FURNACE.

(Application led June 4, 1901.!

2 Sheets-Shadi 2.

(No Model.)

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INVENTOR TH: Nonms mans ou.. wow-Limo.. wnmcvom uc.

UNITED STATES PATENT OFFICE.

HENRY L. DIXON, OF PITTSBURG, PENNSYLVANIA.

GLASS-POT FURNACE.

SPECIFICATION forming part of Letters Patent No. 691,250, dated January 14, 1902.

Serial No. 63,088. (.No model.)

To all whom it' may concern;

Be it known that I, HENRY L. DIXON, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Glass-Pot Furnace, of which the following is a full,clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in Which- Figure 1 is a top plan view of my improved regenerative furnace, partly on the line I I of Fig. 2. Fig. 2 is a longitudinal section on the irregular line II II of Fig. 1. Figs. 3 and et are cross-sections on the lines Ill III and IV IV, respectively, of Fig. 1.

My invention relates to glass-pot furnaces wherein a regenerative heating system is employed, and is designed to cheapen and improve the construction of such furnaces and increase their capacity and, further, to facilitate the applying of the regenerative heating system to old furnaces..

Heretofore in regenerative pot-furnaces the inlet and outlet ports for the gases and products have been located at opposite sides of the furnace near the side walls, and for this reason the number of pots which could be used in a furnace was reduced by this location of the ports, a sixteen-pot furnace accommodatin g only fourteen pots, with the consequent decrease in capacity. This arrangement of the ports was deemed necessary on the theory that if the inlet and outlet ports should be arranged nearer to each other the gases would short-circuit, and thus pass out without efficient extraction of their heat. In applying this regenerative system to an old furnace it was necessary to tear the entire furnace down and rebuild it. Myinvention overcomes these difficulties and enables the full number of pots to be used. It is based upon the fact which I have found in practice that the draft or outlet flue simply relieves the excess pressure in the furnace and that hence there is no short-circuiting of the gases where the inlet and outlet iiues are closely adjacent. In these furnaces the dampers in the stack-flue are always adjusted to prevent any sucking out of the gases from the furnace, since otherwise the furnace Will become chilled. The result, therefore, is that the carbonio-acid gas and products of combustion settle over the iioor of the furnace-chamber, and as the heated products rise from the ports they expand rapidly and fill the entire chamber. The entering gases consequently burn and spread throughout the upper part ofthe chamber, from Which they descend to the outlet-ports. My invention is based upon this fact; and it consists in placing the regenerative ports inside the lines of the pots, thus allowing the full number of pots to be used. It further consists in assembling the regenerative iiues within the cave used in these furnaces and extending transversely beneath the furnace Ona diameter thereof, and also in the construction and arrangement of the parts, as hereinafter more fully described,

and set forth in the claims.

In the drawings, 2 represents a pot-furnace of the ordinary form and arranged to contain an annular row of pots on the bench 3.

` The regenerators which I employ are located exteriorly to the furnace, as shown in Figs. 1 and 2, and these regenerators may be arranged in any desired manner to preheat the air or combustible gases, or both, though I prefer the arrangement shown. In this form 4 4 are air-regenerators, and 5 5 gas-regenerators. The gas-supply flues 6 6 lead to the pointa; where the ordinary reversing-valve is located, and similarly the air-supply fines 7 7 lead to the point y Where the air-valve is used.

The set of regenerators covers a space much Wider than the tunnel beneath the furnace, and the iiues connecting these rcgenerators to the furnace-ports consequently extendin- Wardly and toward each other,and the air and gas flues are preferably arranged one above the other Within the tunnel. Thus in Fig. 1 8 8 are the air-inlet ports, and 9 9 the gas-inlet ports, these being used alternately in the usual manner. The connecting-fines 10 eX tend horizontally through the tunnel to the gas-inlet ports and connect with the upper -part of the gas-regenerators thro ugh lues 11,

located between the bridge-wall12 and the front of the regenerative chamber. The gassupply flue 6 leads into the lower part of the regenerator and is shown in Fig. 2.

The air-lues 7 lead directly into the air-regenerators, and the connecting-fines 13 con- IOO 10 and thence lead to the center of the fur nace, Where they communicate through side openings with the air-inlet dues at the outer sides of the gas-inlets.

The vertical portions 14 of the inlet-fines are provided with blind-openings 15, which lead into the tunnel beneath the slag-hole 16. As the blocks Wear down at the top of the ports 8 and 9 any glass that runs down into these ports may thus be taken out through these blind-openings.

The furnace is operated in the usual manner, the damper 17 of stack-fine 18 being regulated so as to keep a pressure in the furnacechamber in the usual Way. The heated air and gases entering the furnace burn and spread throughout the chamber,and the products pass 4off through the other set of regenerators through the chimney, the direction of the gases being reversed, as desired.

To prevent the dame from the regeneratorports from overheating the nearest pots, VI preferably employ shade-Walls 19 at the ends of the ports and between them and the adjacent pots. l

In order to keep the floor 20 above the regenerators cool for the Workmen, I provide an air-space 2l between it and the tops 0f the regenerative chambers, as shown in Fig. 4. Air circulates through this insulating-space and keeps the door comparatively cool.

The advantages of my invention How from the location of the regenerator-ports Within the lines of the pots, and more specifically from the external regenerative system, with the compact arrangement of the dues leading into the furnace through the ordinarytunnel. The system is easily applied to an old furnace and is cheaper to build than the ordinary regenerative pot-furnace. A compact arrangement is afforded, While the output of the furnace is increased by allowing the full number of pots to be used. v

AV circular, elliptical, or rectangular furnace may be used, and the regenerators may be located at opposite sides of the furnace or directly beneath it, and many other changes maybe made in the form and arrangement of the regenerators, their connections, and the other parts of the furnace Without departing from my invention.

I claim* 1. A regenerative glass-pot furn'acehavlng two separated ports opening into the furnacechamber,a line of pots surrounding said ports, regenerators having dues connected to the ports,and1n1echanism for reversing the direction of flow through the regenerators, ports, and furnace; substantially as described.

2. A regenerative glass-pot furnace having a plurality of ports opening into the furnacechamber, arow of pots surrounding said ports, regenerators each having a flue leading to one of said ports and also arranged to be con- 'nected to an outlet-flue, and valve mechanism for reversing the flow of gases through said regenerators, ports and furnace; substantially as described.

3. A regenerative glass-pot furnace having four ports opening into the furnace-chamber, a row of pots surrounding the ports, four regenerators, each having a connection to one of said ports, and also a connection leading to a stack-flue, said regenerators being arranged in pairs and having suitable Agas and air connections, and mechanism for reversing the flow through the pairs of regenerators, their connections at the furnace; substantially as described.

4. A regenerative glass-pot furnace having a plurality of ports opening into the furnacechamber, a roW of pots surrounding the ports, regenerators exterior to the furnace and each having connections to one of said ports, and mechanism for reversing the direction of the flow through said regenerators, ports and furnace; substantially as described.

5. A regenerativepot-furnace having four ports opening into the furnace-chamber, a row of pots surrounding said ports, four regenerators external to the furnace, fines leading from the regenerators to the f urnace-ports and arranged in pairs one above the other,

and mechanism for reversing the direction of the iow through said regenerators, the ports, and furnace; substantially as described.

In testimony whereof I have hereunto set my hand.

HENRY L. DIXON.

Witnesses:

H. M. CORWIN, GEO. B. BLEMING.

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