US1611704A - Furnace construction - Google Patents

Description

Dec. 21 1926.

F. J. ZIPPLER FURNACE CONSTRUCTION Filed Sept. 50, 1925 F11 z/PPLER MENTOR ATTORNEY Patented Dec. 21, 1926.

UNITED. STATES 1,611,704 PATENT OFFICE.- j

FRANCIS .r. ZIPPLER, or PIVITTSBURGVH, PENNSYLVANIA.

FUnNhoE coNsrauc'rIoN.

Application tiled. September This invention relates to furnaces, and

v metal in the furnace and consequent stoppage thereof. Further objects'will appear from the detail description. a

In the drawings v Figure 1 is a vertical sectional view through the lower portion of a furnace constructed in accordance withv my inventiontaken substantially on line '11 of Figure 2.

Figure 2 is a section taken substantially on line 2-2 of Figure l.

Figure 3is a perspective view of one of the supporting blocks.

Figure l is a perspective view of one of the twyer blocks. Y

Fi re 5 is a fragmentary shctional view. showing a modified form of construction.

Figure 6 is a modified sectional view show-- ing another modified form of construction.

The furnace A is of known construction and includes a sheathing B which surrounds the refractory material C. The furnace is provided with a neck a which communicates with a throat d discharging into a metal receivin chamber 6 in thelower portion f of the rnaee. Furnaces of this type are of well known construction and it is not thought necessary to further describe in .detail the construction of the furnace itself.

A flat cast iron rin" 1 seats upon the upper face of lower portion f of the furnace an is provided with an upwardly projecting rib 2 remote from its inner edge. support ing blocks 3 seat upon plate 1', each of these blocks being provlded in its lower inner corner with a rabbet 4 which receives rib 2.

The block 3 is of approximately T-shape to hold the supporting blocks in position,

and against movement inwardly of ring 1.

of the air before it enters the fur:

30,1925. Serial No. 59,611.

Due to the T-s'hape of blocks 3, an air receiving' space 6'is formed about the furnace in the p ane of the blocks. Blocks 3 are spaced'apart so as to leave openings 7 for entrance of the air into the furnace, air being supplied to space 6 through openin s 8 provided for this purpose in sheathing fi, these openings communicating with an air chest or manifold 9 which extends about the furnace and to which air is supplied by means of conduits 10 connected to any suitable or preferred means for supplying air under pressure to the chest.

- An upper ring 11 is supported upon blocks 3 and is provided with an inner depending flange 12 which is spaced away from the innor faces of blocks 3 and extends downward ly an appreciable distance from the upper ends of these blocks forming with the inner faces of the blocks an air passage 13. The

lower portion of this flange is reduced in of such breadth as to contact with the inner faces of blocks 3 and extend to the inner edge of plate 1, bridging the space between the two plates. The twyer blocks are spaced apart to provide twyer openings 17 for admitting air into the throat of the furnace. These twyer blocks can be readily adjusted on plate 1 so as to vary the size and relative disposition of the openings to obtain maximum eficiency in operation of the furnace. By having the blocks positioned on end or vertically, and bridging the space between the two plates, these blocks are readily accessible and can be easily adjusted as de- 1 sired or necessary.

Flues 18 of known construction commu nicate at their upper ends with the throat of the furnace above the upper plate. These flues also communicate, at their lower ends, with the air space 6 throu h suitable openings 11 provided throug up er plate 1 andopenings 3 provided throug certain of the blocks 3 for this purpose, openings 3 registering with openings 11. supporting blocks and associated parts are heated to a high temperature during operation of the furnace, the air which enters space 6and flows about and between these, blocks will be. heated to a. high temperature As thebefore entering the air passage 13 where this air-will be heated to even ahigher temperature before being discharged through the twyer openings 17 into the furnace. This insures that the air will be properly preheated before enterin the furnace and effeetually prevents chilling andconsequent freezing of the metal in the furnace. The

admission of this preheated air to the furure 5, ring 1 is. provided with two upwardly projecting ribs 2" between which is seated a lower supporting block 3" upon which is seated a center ring 2". An upper supporting block 3 is seated on ring 2* and sup- -ports an upper ring 11" having a depending flange 11. The twyer blocks 16 are supported upon the inner portion of lower ring 1 each of these blocks being provided with r a projection 15 extending from its upper inner-corner in front of plate 2*, a space 19 being left between the upper end of blocks 16* and the under face of plate 2*. Plate 2 may be continuous or can be formed of spaced segments, as desired. The air flowingbetween blocks 3 can pass into the space 13 between flange 11 and blocks 3 so as to be heated, this heated air commingling with the air flowing into space 6 and passing between blocks 3". The air which flows between blocks 3 passes through the spaces between the twyer blocks, some of this air flowing diregtly into the furnace and the restof this air flowing through space 19 into the spaces between the twyer blocks and thence into the furnace. The lower supporting blocks 3* are preferably provided at their outer upper edges with upwardly rojecting flanges 3 which serve to hold t e central plate 2* in osition.

In the modified form illustrated in Figure 6 the central late 2 is provided with an outer upward y projecting peripheral flange 2 which acts to hold the upper supporting blocks 3 against outward-movement, and the depending flange 120i the upper plate 11 and projection 15 of twyer block" 16" is rabbeted to receive the redneedlower, portion of flange 12 of-upper plate'11; The

' inner portion 2 of plate 2 is reduced in thickness to provide a space 19 between the upper ends of the twyer blocks and the plate. The operation of this modified form is in all essentlal respects the same as the operation of the form illustrated in Figure 5.

As will be understood, and as herernabove suggested, changes may be resorted to in the construction and arra'n ement of parts of the invention without" spar-ting from the tion, a lower rin --blocks, the flange of the upper ring i J field and scope of thegsame, and I intend to include all 'such variations, as fall within the scope of the appended claims, in this application in which a preferred form only of my invention is disclosed. 4

- "What r claim is 1. In a furnace construction, a lower portion, a lower ring seated on said lower portion, supporting blocksseated on the ring in spaced relation, means for supplying air under pressure to the spaces between the blocks, an upper ring seated upon the blocks and having a depending flange spaced away from the inner faces ofthe blocks, and twyer blocks seated on the lower ring and extending therefrom to the flange of the upper ring, said twyer blocks being spaced apart to provide twyer openings and being inde-- pendently adjustable upon the lower ring to vary the size and relative disposition of the twyer openings, the upper port-ion of the furnace resting upon said upper ring. I

2. In a furnace construction, a lower portion, a lower ring seated on said lower portion, supporting blocks seated on the ring in spacedrelation and provided with outwardly projecting flanges at their lower ends, said blocks being of approximate T- shape, a sheathing forming with the blocks an air space extending a structure, an upper ring seated on the blocks and having a depending flange cooperating with the upper portions of the block to form an air passage, means for supplying air unout the furnace der pressure to said air space, and twyeri blocks mounted on the lower ring inside of the supporting blocks and in spaced relation, said twyer blocks extending from the lower ring to said flange and being independently adjustable upon the ring to vary the size and relative disposition of the twyer v openings, the upper portion of the furnace resting upon the upper ring. 3. In a furnace construct'on, a lower porseated-on said lower portion, supporting spaced relation and provided with outwardly projecting flanges at their lower ends, said blocks being of approximate T-shape, a

sheathing forming with the blocks an air space extending about the furnace structure, an upper ring seated on the blocks and having a depending flange cooperating with the upper portions of the block toform an air passage, means for supplying air under pressure to said air space, the lower ring extending inwardly beyond the supporiling aving its lowerportion reduced in thickness from its inner\ face, and a plurality oftwyer blocks supported upon the inner portion of the lower ring and independently adjustable thereon, said twyer blocks corresponding in width to the width of the inner portion of the lower ring and being of less height than locks seated on the ring in the supporting blocks, the twyer blocks bei ing provided at. the inner edges of their upper ends with extensions projecting into the lower reduced portion of the flange of the upper ring, the upper portion of the furnace resting upon said upper ring.

4. In afurnace construction, a lower portion, a lower ring seated on said lower 'por-\ tion, supporting blocks seated upon the lower ring in spaced relation, means for supplying air under pressure to the spaces between said blocks, an upper ring seated upon the supporting blocks and having a depending flange' spaced away from the inner faces of the blocks, the upper portion-of the furnace resting upon said upper ring, the lower ring extending inwardly beyond the supporting blocks, and twyer blocks supported upon the inner portionof the lower ring and extending therefrom to the flange of the upper ring, said twyer blocks being spaced apart and independently ad justable on the lower'ring.

5. In a furnace construction, a lower portion, a lower ring'seated on said lower portion, supporting blocks seated upon the lower ring in spaced relation and the blocks and the ring being provided with cooperating means for preventing movement. of the blocks inwardly of the ring, means for' supporting-blocks, and twyer blocks supportednpon the inner portion of the lower ring and extending therefrom to the flange of the upper ring, said twyer blocks-being spaced apart and independently adjustable on the lower ring. v

'6. In a furnace construction including a sheathing, a lower portion, a lower ring seated on said lower portion, supporting blocks mounted on the'ring in spaced relationand spaced away from the sheathing,

means for supplying air under pressure to the space between said blocks and the sheathing, the ring extending inwardly beyond the blocks, an upper rin seated on the blocks and coacting therewith to form an inner air space communicating with the spaces between the blocks, the upper portion of the furnace resting upon the upper plate, and

twyer blocks mounted upon the inner por tion of thelower ring in spaced relation and bridging the space between the two rings, said twyer blocks being independently.

adjustable to vary the size and relative disposition of the spaces .therebetweem 7. In a' furnace construction includinga sheathing, a lower portion, a lower ring seated on said lower portion, sup orting blocks mounted on the rlng in spac relation and spaced away from the sheathing, means for supplying air under pressure to the space A between said blocks and the sheathing, the

ring extending inwardly beyond the blocks, an upper ring seated on the blocks and coacting therewith'to form an inner air space communicating withthe spaces between the blocks, the upper portion of the furnace resting upon the upper plate, twyer blocks mounted upon the inner portion of the lower ring in spaced. relation and bridging the space, between the two rings, Said twyer blocks apeing independently adjustable to vary the size and relative disposition 9f the spaces therebetween, and fines comunicating with the interior of the furnace above the'npper ring, the upper ring and the supporting blocks having openings establishing communication between-said fluesv and the space between the S a ng and said su portingblocks. p

, In testimony whereof I- aflix my signature.

FRANCIS J. ZIPPLER.v

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