US1069402A - Reversing-furnace. - Google Patents

Description

P. G. FAHERTY. REVERSING FURNACE. APPLICATION FILED MAILSI, 191s.

Patnted Aug. 5, 1913.

' WITNESSES. Maw

UNITED-STATES PATENT orrrc.

IPATBICK G. FAHERTY, OF MUNHALL, PENNSYLVANIA.

BEVERSING-FURNACE.

'1 b all whom it may concern:

Be it known that I, PATRICK G. FAI-IERTY, a citizen of the United States, and aresident of Munhall, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Reversing-Furnaces, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a sectional plan-view of a portion of a reversing furnace, showing one form of my improved checker work chambers for open-hearth furnaces, taken on the line II of Fig. 2. Fig. 2 is a partial sectional view on the line II-II of Fig. 1; and Fig. 3 is also a partial sectional view on the line IIIIII of Fig. 1.

This invention relates to an improvement in reversing furnaces, and is particularly adapted for regenerative open-hearth furnaces.

The object of my invention is to provide a cheap and efficient structure of this character, in which the checker work can read ily be cleaned and the material removed from the checker work chambers without tearing down any portion of the structure.

It is well known to those familiar with the art that the life of a furnace of this character is dependent upon the life of the checker work, and as soon as the checker work becomes clogged or filled up the furnace must be practically rebuilt, which is not only expensive, but also takes considerable time to reconstruct, and after it has been reconstructed, the furnace must be fired for a long time to'season it before it can be used for melting metal.

In order to provide means for readily removing the deposits from the checker work, I provide the bottom of the checker work chambers with a plurality of parallel gutters intowhich the deposits on the tops of the checker work tiles will fall when removed therefrom. These gutters slope toward a suitable outlet or outlets, through which the deposits collected in the gutters are washed out by water admitted to the gutters. By

the use of a structure of this character I 7 am enabled to overcome all of the'formcr objections, without keeping the furnace out of commission for any length of time, and without materially cooling ofi the furnace during the cleaning operation.

Specification of Letters Patent.

' Application filed March 31, 1913.

Serial No. 757,759.

The precise nature of my invention will be best understood by. reference to the accompanying drawings, which will now be described, it being premised, however, that various changes may be made in the details of construction of the checker work chambers without departing from the spirit and scope of my invention, as defined in the appended claims. i

Referring to the accompanaying drawings, the numeral 2 designates regenerative chambers of an open hearth furnace, the lower portion of each of these chambers being provided with a plurality of gutters 8, formed between longitudinally extending piers or walls 4. Supported on the topsof these walls 4 and projections 5 extending inwardly from the walls of the chambers are tiles 6, and 7 are checker work tiles of the usual shape and size supported on the tiles 6.

Longitudinally disposed in front of each of the chambers 2 is a catch basin 8, each of which is provided with a sloping gutter 9, adjacent to the front end of each of the gutters 3 in their respective chambers. These gutters 3 slope from the rear of the furnace toward the catch basins S.

10 designates gutters in each catch. basin 8, leading from the central portions o? the gutters 9 to a drain 11 on the outside he walls forming the chambers S. Thesins 11 are connected by means of pipes I with a sewer, or any suitable point to which the material removed from the checker work is to be deposited.

Extending through the longitudinal outer walls of the regenerative chambers are openings 13, which are closed by means of brick or tiles when the furnace in operation, and 14; are openings through the walls 4: in alinenient with the openings 13.

13 are clean out openings extending through the walls of the chambers into the catch basins 8. These openings 13, as well as the openings leading from the gutters 10 to the catch basins 11, are closed by means of brick work or tile when the furnace is in operation.

15 are lines leading from the chambers above the catch basins S to the reversing valves of the furnace, and through which flues the products of combustion pass when one set of regenerators is used for heating up the air to form combustion in the fur- Patented Aug. 5,1913.

nacc, and through which the incoming air is admitted to the adjacent checker work when the furnace is reversed- When it is desired to clean out the clicckei' Work, a nozzle, such as indicated at 1?, which is connected to at suitable source of sir supply by means of u tube 16, is dropped down between the oi the cliecke'i. work. This nozzle is arranged to direct radially to disposed blasts all six in horizontal disco than over? the oi tlie'biricks to blow oil the deposits collected thereon, which deposits full into the gutteis 3 between the Wells After the have been blown l5 from tioe bricks oi" tiles, :1 nozzle such as indicoteti at 18, or a plurality of such nozzles, is inserted through the openings l3 through the wells of the checker Workchambers, and also throu b. the openings 14- to'wasli posits collficted f om the bottom of the gutters into the csfc basin s, by means oi Water passing through the tube 19, which is supplied from; any suitable source. If desired, I uiayiuse a, plurality of such nozzles or the cleaning operation can be performed by means of a, sii le uozzle. When using a single nozzle, t e nozzle. is first inserted through sin opening 13 adjacent to the catch be ins to Wash the material between said opening and tbe cetch basin into the catch basins. can then Wash the material in. the second gutter between the opening 14 adjacent to tlie catch basin by inseeting it through said opening, and by repeating the operation the material in all of the guttef's adjacent to the catch basins is ilushed out. I Will then insert the nozzle through the second opening 13, and Wash out the insteriizl between said opening; and the 40 opening 18 into the catch basins. This oporation is repeated until all oftbe deposit Within the gutters is flushed into the cot/ch basin, and after the checker Work chumbei' has been thoroughly cleansed, the various openings are sealed and the furnace is ready for use.

By constructing e furnuce as above described I arnembled to readily remove the deposits from the tops of the checker Work, and then Wash the deposits into the sewer or any suitable point. As the wells it are comparatively thick and as a very short space of time is required for Washing out the gutters, the Washington be accomplished without-materially reducing the temperelure of the Wells 1%, and the lie-Lit Within the walls will soon dry off the outer sue the Wz'tllfl utter one flushing as been c pleted and raise the temperature of illiQ miter i susfaces of til-e Walls to the temperature oi I the Walls.

of my invention result son of a furnace having a. slopiig gutters below the l Work, which o an into suitable v lowing outlets iougli which the deposits are Washed. ll u'rtuez" from the provision. of a furnace in which access can readily be had to the gutters with the flush: in device for flushing the material into the catch basin.

ll claim:

1. it. regenerative furnace having cliecltei' a plurality of gutters extending bethe ,ChQClIGI ork, there being outlets f un said gutters, and means for admitting Witter at a plurality of points to each of said gutters for Washing out deposits collected therein; substantially as described.

2. A regenerative furnace having checker Work, a plurality of gutters having sloping bottoms extending below the checker Work, there being outlets leading from said guttei's, means for removing the deposits from the tops of the checker work, and means for flushing the deposits from. said gutters to tlie'outlcts; substantially as described.

3. A. regenerative furnace having e plurality of regenerative chambers, longitudiuelly extending Wells in. the bottoms of said chambers, checkerwwork supported. on said uni ahere being it plurality of sloping guttermed between said Walls, there also being outlet openings leading" from said guttets, end nieces fox" admitting Water at 21 pltuulity of points to each of said gutters for Washing out the deposits collected therein through said outlets; substantially es'dcscribed, I

4. A. furnace iutvinge plurality of regenerative chambers, thick hestwetziining; Walls in. the bottoms of saidv chambers, checker work. supported on sold Willis forming depositrecciving gutters, a,

the interior o The udvsul from the cutcls basin in connection with the ends of se'id gutters, there being an outlet leading from said basin, means for directing blasts of air over the bricks on the checker work to blow the deposits on the tops of the tiles into the gutters, and means for admitting Water to said gutters to Wash out the do posits; substantially s l :ibed.

ln tcstiu'iou, T have hereunto set wells, said

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