US1607367A - Furnace wall - Google Patents

Description

Nov. 16 ,1926. 1,607,367

A. L. SCHEYING FURNACE wAL'rJ Filed Jan. i7. 1923 2 Sheets-Sheet 1 f6 l .20 -ff ff Patented Nov. 16, 1926.

UNITED STATES PATENT OFFICE.

v FURNACE WALL.

Application led January 17, 1923. Serial No. 613.110.

This invention relates to walls of furnaces. and particularly to walls which are exposed to high temperature or to serious air pressure, such as walls of boilers, metallurgical and steel furnaces, and the like. One ofthe objects of the invention is to provide a wall arranged so that injuries thereto may be conveniently and quickly repaired, particularly without disturbing or injuring portions of suitable fire bricks 18 cemented together' the wall which are not in need of repairs. Another object of the invention is to provide a wall which can be quickly and conveniently assembled and which is inexpensive and dependable. And Aanother object of the invention is to provide a wall which reduces materially the loss of heat and leakage of air therethrough and which eliminates warping, bowing, or other distortions due to the heat or air pressure thereon, or to other causes. Other objects of the invention will be apparent from a consideration of the accompanying drawings and the following description thereof.

Of the drawings, Fig. 1 is a sectional elevation of a steam boiler wall which embodies the features of my invention; Fig. 2 is a sectional plan view of the wall along the line 2 2 of Fig. 1; Fig. 3 is an elevation ofthe outer portion of the wall; Fig. 4 is an elevation of theframe work and of the inner vportion of the wall; Fig. 5l is an enlarged view of a portion of Fig. 1; and Fig. 6 is an enlarged view of a portion of Fig. 2.

In general the wall which I prefer for the purposes of my invention is afcombination of two Walls and comprises an inner wall 10 and an outer wall 11, having an airspace 12 between the two walls. The walls are both substantially airtight and the spaces between the two walls are sealed by means of a top wall 13 and side walls 14- and the floor 15. Other portions of the furnace are sealed in any sultable manner.

A frame is provided for supporting the walls. While any suitable frame may be used, yet I prefer for thejpurpose .vertical I-beams 16. In this instance I have shown one of the I-beams at each corner and one 'at the central portion of the wall, but as many such beams as are desired may be used. Each of these beams has its lower end anchored in the cement floor, and its upper connected in any suitable manner, such as by a beam 17, with the corresponding upper end of the I-b'eam of the wall on the other side of thefurnace; and various portions of the 4two walls are connected or associated with these I-beams in a manuel' hereinafter described.

The inner wall is preferably composed of with suit-able heat resisting cement; the dimensions of the bricks and the wall being suitable for the particular purposes. I prefer for ordinary boiler purposes to use brick about 9 X 4% X 21/2 inches and to build the wall about 131/2 inches thick. It is to be understood however that my invention is to be in no way limited 'to any dimensions given herein. Positioned at suitable places in the wall 10 are bonding blocks 19 made of heat'resisting material which extend into or through the wall 10, and

`which have projections 20 extending into the space 12 between the two walls. These projections are suitably clamped to the` frame work ofthe walls so as to hold the bonding blocks firmly in place, and particularly to prevent displacement thereof by air pressure` or other warping tendencies or during the repair of the wall. The means which I prefer for holding Vthe bonding blocks in place comprises clips 21 which are connectedto horizontal bars 22 in any suitable manner such as by means of pins 23. The bars 22 are held from lateral movement byfmeans of the anges 24 of the I- beams, and vertical angle bars 25 fixed to the respective webs of the I-beams. Thus, while the bars 22 arefree to move vertically, they are held firmly a ainst horizontal movement; and thus bowing or other displacements of the wall 10 is prevented, and the bonding blocks 19 are held at all times in position.

If, however, the fire in the fireplace 26 above the grate 27 injures the adjacent bricks or bonding blocks, so that it is necessary to repair the wall, the particular bricks which are injured can be readily driven out from the wall without disturbing the remainder of the wall, and any bonding blocks that are to be replaced may be quickly Vremoved and new bricks land blocks substituted without in any way injuring or disturbing the remainder of the wall.

While the inner wall alone as described is suitable for various purposes and it may, by suitable modifications within the province of those skilled in the art, be made suitable for substantially all purposes, yet I prefer in many cases to provide' an outer wall ll to be used in conjunction with the inner wall. This outer wall I prefer to form of a plurality of sections 30, each of which is composed of a metallic casing 31 which is filled by blocks 32 composed of suitable insulating material. These blocks are held in place in the casing in any suitable manner such as by means of straps of iron 33 which extend across the sections and are suitably fastened to the sides of thecasings. The various adjacent sectionsare connected to each other by means of L-irons 34 extending around the sections and the marginal edges of the walls are connected to the frame work in any suitable manner such as by means 'of L-bars 35 riveted to the I- beams 16.` The edges of the section are bolted to each other and to the frame work so that they may be clamped firmly together to reduce to a minimum the leakage; and gaskets may be interposed between the edges to still further eliminate the leakage. The bolts also allow the sections to be quickly detached, and one or more of the sections may thus be conveniently removed so as to allow access to the outer side of the inner wall when it is desired to repair that wall or for any other purpose. When any of the bricks of the inner wall are injured by the heat of the furnace so that they need to be replaced, the section 31 opposite the burned bricks is removed; the burned bricks are then driven out of the wall, new ones substituted, and the section 30 replaced.

It will thus be seen that'I have provided by my invention a furnace wall which may be very conveniently and quickly repaired and which is so bound and connected to the frame work that material distortion or displacement thereof -or any portion thereof is substantially impossible. Furthermore by theuse of the outer wall leakage of the air is largely eliminated as the surface of the casings 30 are entirely airproof, and the casings themselves and the edges of the two walls may be so connected as to substantially hermetically seal the spaces between the walls. Furthermore the outer wall materially reduces the loss of heat from the sides of the furnace owing to the air space between the two walls. As the heat energy from the outer surface of the inner wall is radiated outwardly it strikes the non-conducting outer wall, and is in turn radiated back to the inner wall. If desired, the heated air between the two walls may be forced into the fireplace to assist combustion.

I claim as my invention:

l. A furnace wall comprising a plurality r of heat resisting blocks in combination with a plurality of artificial stone bonding blocks interspersed among said first mentioned blocks, and means for holding said bonding blocks in place, said means comprising a frame work and means connecting said frame work with the outer ends of said bonding blocks.

2. A furnace wall comprising a plurality of heat resisting blocks in combination with a plurality of heat resisting bonding blocks interspersedl among said first mentioned blocks, and means for holding said bonding blocks in place, said means comprising a frame work and means connecting said frame work with the outer ends of said bonding blocks, said bonding blocks extending entirely through said Wall.

3. A furnace wall comprising a plurality of heat resisting blocks in combination with a plurality of somewhat similar blocks interspersed among said first mentioned blocks, and means for holding said interspersed blocks in place, said means comprising a frame work and means connecting said frame work with the outer ends of said interspersed blocks, said interspersed blocks having projections extending outwardly from said wall and said connecting means being fixed to said projections.

4. A furnace wall comprising a plurality of heat resisting blocks in combination with a plurality of bonding blocks interspersed among said first mentioned blocks, and means for holding said bonding blocks in place, said means comprising a framework and means connecting said frame work with the outer ends of said bonding blocks, said frame comprising vertical beams and horizontal bars slidably vertical with reference to said vertical beams, said connecting means being fixed to said horizontal bars.

5. A furnace wall comprising an outer wall and an inner wall, spaced apart with an airspace between said walls, said inner wall being composed of heat resisting material, and said outer wall comprising a thick layer of non-conducting material and metallic sheets on the outside of sai `non-conducting material.

6. A furnace wall comprising an inner wall and an outer wall, the outer wall spaced a material distance from said inner wall, and a frame work positioned between said walls; both of said walls being connected to said frame work at a plurality of Leones? 8 7. A furnace wall comprising an inner wall being rigidly fixed to said frame work, Wall' and an outer Wall, the outer wall said frame comprising beams extending 10 spaced a material distance from said inner vertically and horizontally from one side Wall, and a frame Workl positioned between to the other of said Walls.

5 said walls; both of said walls' bein con- In testimony whereof, I hereunto set my nested to said frame work at a plura ity of hand.

places in the interior portions of the sides of said Walls, and the edges of said outer ARTHUR L. SCHEYING.

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