US2614545A - Water-cooled lintel and skewback channel cooler - Google Patents

Description

H. F. NULPH Oct. 21, 1952 K WATER-COOLED LINTEL AND SKEW-BACK CHANNEL COOLER Filed Dec. 30, 1949 Fig Z.

mlmuwuunnm 8 INVENTOR.

Ann-II Harry 1-. Iva/ 00 H; F. NULPH Oct. 21, 1952 WATER-COOLED LINTEL AND SKEW-BACK CHANNEL COOLER I 2 SHEETSSHEET 2 Filed Dec. 30, 1949 Fig.5.

Harry. F. Nu/plz I 'INVENTOR.

-BY all Patented Oct. 21, 1952 UNITED mm, PATENT OFFICE WATER-COOLED IIJINTELI ANDY SKEWBACK CHANNEL COOLER Han-yr. Nulplr, East Liverpool, 01116 Application December 30, 1949,- Serial Not-136,086

1 This invention relates to new and useful improvements in water-cooled door frames of the type used inthe furnaces of the steel industry,

and more particularly pertainsto a water-cooled lintel having improved circulation means and meansfor attaching the same to a supporting structure.

The primary olbject of this invention is to'pr'ovide support for the masonry-above furnace openings, which will permit efficacious replacement of bricks or the like adjacent the opening that have been destroyed byexcessivelyhigh tempera any considerable heat exchangetherewith; while-- obtaining adequate support therefrom.

Still another important object of the invention is'to provide a device ofthis character which is liquid cooled and in which the liquid circulation is suchqasto insure adequatecooling to the sup port at the points where: the same is more sub- J'ect todeleterious effects of heat;

A-meritorious feature ofthe present invention resides in the sleeves; which receive the fastening bolts by which the lintel is supported upon the buck stays, extending; through thez 'rear portionsof the hollow jacket, whereby thesleeves and the bolts-are Water-cooled and the arrangementof the portions being such with respect to thebuck stays that heat insulatingjpads; such as asbestos-can beinserted therebetween.

Anotherimportant feature of the present inventionresides in the-contour of the-front wall of the lintel, whereby: access is permitted to the water inlet pipes, adequat support given'thefurnace roof, radiant energy reflected from the same,

andv the combustion products slide'off the same.

'Another important feature of the present in-' vention resides in the laterally extending portions being slightly higher than the body sectionto'accommodate steam if such is formed; andto permit access'to bricks overlyin the body section.

A final important feature to be specifically enumerated.- herein-resides in thewater. icirculae claims; (01. D etion afi o-rded by the lintel, whereby cold water is directed to the danger points, and the flow of the water being. forced to the rear of the laterally extending portions, whilesteam if such is formed is directed away from the. forward sloping, wall and immediately out of the outlet pipes,- thereby avoiding high temperatures in the lintel by not permitting the formation of superheated steam at any point in the lintel; V I

These, together with various ancillary features and objects of the invention which will later become apparent as the following description pro ceeds are attained by the presentinvention, a preferred embodiment of which has been illustrated by way of example only in the accompanying drawings, wherein:

Figure l is a front elevational vie'w'of the lintel, showing the same in position on afurnace and secured to buck stays by bolts, indicated in dotted li do .a a v c Figure 2 is a rear elevational view of the lintel, showingthesame in use on a furnace;

Figur 3 is a vertical transverse sectional view of :the present invention, being taken substantially upon theplane of the section line 33 of Figure gl; 7

Figures s a, top plan-view of the lintel, than taching sleeves being" shown in dotted outlines;

l igure'5 is a' horizontal sectional view of the lintel, being taken upon theplane of the section line fi;5iofFigure 6';

Figure 6' isa vertical transverse sectional view .o f-thelintel, being taken upon the plane of the section line 6'6* of Figure 4;

Figure 7 a vertica1- longitudinal sectional viewofthe lintel, bein taken substantially upon the plane of the broken'section line T--! of Figurefi; and,

t Figure 3 is another vertical transverse sectional designate similar parts throughout the variousviews, and inwhich the lintelis indicated generally byithe numeral I0.

The lintel I0 comprises a substantially U- shaped hollow jacket having a body section l2 and rear-wardly extending portions I4 at the opposite extremities of the body section I 2. end walls It of thebodysection I2 extend rearwardly to define'theouter side walls l8'of' the portions 1 l4; while the'inner walls'zfl'of theportions l'4' terminate at the opposite 'extremities 'of the rear wall 22 of the body section I2"; so that:

The

the interiors 24 of the portions l4 are in free communication with the interior 26 of the body section 12, as will be readily understood upon reference to Figure 5.

As best shown in Figures 1 and 7, the upper wall 28 of the body section I2 is downwardly curved at 39 adjacent its opposite ends 34 to be lower than the upper walls 36 of the portions l4 substantially its entire length for a purpose to become subsequently apparent.

The rear wall of the body section 12 includes an upper vertical portion 38 and horizontal portion 40 extending rearwardly from the lower edge of the portion 38. A wall portion 42 extends rearwardly and downwardly from the Outer edge of the portion 46 and terminates at the bottom wall d4 of the lintel ill, the rear wall being so contoured for a purpose presently clear.

A plurality of longitudinally spaced water inlet pipes extend vertically through the portion 40, and have their lower ends terminating in spaced relationship above the bottom wall 44 of the lintel l0, and the upper ends of the water pipes 46 are threaded as at 48 for connection to a source of water, not shown, for forcing water into the body section l2 immediately above the bottom wall 44 thereof. Pairs of spaced hot water outlet pipes 56 extend upwardly from each of the portions M, the lower ends of which communicate with the upper parts of the interiors 24, and the upper ends of which are threaded as at 52 for connection to a water cooling system or the like, not shown, so that the water can be recirculated to the pipes :36 if desired. Outlet pipes 54 are connected to the lower rear extremities of the portions l4, and each of the pipes 54 is provided with valves 56 for controlling the discharge therefrom. The pipes 54 and valves 56 are for the purpose of permitting the lintel IE) to be drained or flushed free of sediment which may have been deposited therein.

Vertically spaced sleeves 58 extend through each of the portions l4, and are in sealed engagement with the walls. I8 and 20, as by welding so, the arrangement being such that water circulating in the interiors 24 circulates about the sleeves 58 so as to cool the exterior thereof.

As shown clearly in Figures 1, 2 and 3, the lintel I is disposed above an Opening 62 in the side wall 64 of a furnace 66 that is constructed of masonry, such as fire brick, or other refractory material as desired, and which includes an arched roof construction 68 and upright buck stays disposed on opposite sides of the opening 62. The lintel H] is supported by the buck stay 10 by means of bolts 12 which extend through suitable apertures in the buck stays l0 and the sleeves 58, the arrangement being such that asbestos pads or the like, not shown, may be disposed between the portions l4 and the buck stays 10 if desired.

With particular reference to Figure 3, it will be seen that the rear wall of the lintel [0 provides adequate support for the roof construction 68, while the horizontal portion 40 and the upper wall 28 being depressed permit access to the inlet pipes 46 and the bricks forming the roof structure 68 It will be readily appreciated that the portions l4 may, if desired, be formed to extend below the body section 12 to define cooled side walls for the opening 62, and with the same being secured to the buck stays in a similar manner throughout their vertical extent without departing from'the spirit of the instant invention.

The circulation of water through the lintel ill will be readily understood. Water admitted to the interior of the body section l2 intermediate its ends proceeds from immediately above the bottom wall 44 thereof, to the portions [4 to insure cooling of the body section 12 throughout its entire length and upwardly to the outlet pipes 50 so as to cool the sleeves 58. It will be noted that any steam formed against the sloping wall 42 is directed upwardly and away from the wall 42 to provide for good heat exchange between the liquid water in the body section l2 and the wall 42, while such steam thus formed proceeds immediately to the upper portion of the interiors of the portions 14 so as to be immediately removed from the lintel lil through the pipes 59. It will also be noted that the sloping wall 42 does not permit the accumulation of combustion products upon the lintel l0 and that the sloping of the same tends to reflect radiant, energy emanating from the combustion chamber of the furnace away from the lintel ID.

The lintel I0 is preferably constructed of steel plate to insure sufficient strength in the same for supporting the roof structure, and it will be seen that the form of the same is such that the same may be readily fabricated by suitable welding.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not desired to limit the invention to the exact construction shown and described, but all suitable modifications and equivalent may be resorted to, falling within the scope of the appended claims.

I-Iaving described the invention, what is claimed as new is: f

1. A lintel for furnace structures, said lintel comprising a hollow substantially U-shaped member including a body section and a pair of spaced parallel leg portions joined by said body section, said leg portions each having flat upper and lower horizontal walls and inner and outer vertical side walls, said body section also including flat upper and lower walls, said lower wall of said body section being coplanar with said lower walls ofsaid leg portions and said upper wall of said body section being in a horizontal plane below a horizontal plane of the upper walls of said leg portions, said body section including a stepped rear wall having a vertically; disposed upper portion, a vertically inclined rearwardly and downwardly sloping lower portion and a horizontal portion joining said upper and lower portions, inlet conduits extending downwardly through said horizontal portion, outlet conduits extending downwardly through the upper walls of said leg portions, said side walls of each leg portion having registering apertures therein, and sleeves fixed in said registering apertures and adapted to receive fasteners, whereby the lintel may be secured between the buck stays of a furnace structure.

2. A lintel for furnace structures, said lintel comprising an elongated hollow body member including forward and rear walls, a pair of hollow attaching flanges extending forwardly from said bodymember and having communication with the interior of said body member, said hollow fiangeseach having inner and outer side walls with registering apertures therein, sleeves fixed in said registering apertures and adapted to receive fasteners, outlet means attached to each of said hollow flanges, inlet means attached to said body member, and drain conduits extending from said hollow flanges and including valve 5 means, said rear wall of said body member including a flat vertical upper portion, a vertically in- ,clined downwardly and rearwardly sloping lower portion, and a horizontal portion joining said upper and lower portions. 10

HARRY F. NULPH.

' REFERENCES CITED ,The following references are of record in the 15 file of this patent:

UNITED STATES PATENTS Number Number Name Date Ross et a1 Mar. 9, 1897 Knox June 26, 1906 Blair July 6, 1909 Knox Aug. 9, 1913 Naismith June 8, 1915 Davison Dec. 21, 1926 Thornton Feb. '7, 1933 Thornton 1 Sept. 12, 1939 'Pottmeyer Aug. 27, 1946 FOREIGN PATENTS Country Date Great Britain Aug. 8, 1912 France Dec. 26, 1922

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