US1014903A - Deflecting-partition for furnaces. - Google Patents

Description

H. A. POPPENHUSEN & J. HARRINGTON.

DBPLEGTING PARTTIoN FOR PURNAGES.

APPLICATION FILED NOV. 10, 1910.

1,014,903. Patented Jan. 16, 1912.

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- the letters of reference marked thereon,

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HERMAN A. POPPENHUSEN, OF EVANSTON, AN) JOSEPH HABBINGTON, OF RIVERSIDE, ILLINOIS.

DEFLECTING-PARTITION FOR FURNACES.

Specification of Letters Patent. I Original application filed April 12, 1909, Serial No. 489,290. Divided and this application filed November Patented Jan. 16,1912.

10, 1910. fSerial No. 591,576.

titions for Furnaces; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to which form a part of this specification.

This invention relates to furnaces for lsteam boilers and other uses, andthe invention relates more specifically to improvements in the detlecting partit-ion, wall or arch located over the fire grateand arran ed to direct the fuel gases over the burning el in the combustionchamber in such a way asl to promote the combustion-of the fuel gases.

The improvements constituting our invention are applicable to furnaces provided with automatic stoking devices or means by which the fuel is advanced through the combustion chamber as it burns; and the deflecting partition, wall or arch is located above the fuel feeding or advancing grate in such manner that the burning gases are directed forwardly over the lire bed toward the fuel feeding end of the'furnace in their passage from-the combust-ion chamber to the smoke stack. A

Among the objects of the invention is to provide a deliecting partition, wall or arch of this character which may be made of relatively small depth or thickness so as to occupy but little space in the'furnace, and

`thereby enable the height of the furnace to be materially decreased.

A further object vof the invention is to simplify the construction of the delecting partition, wall or arch, to reduce the cost thereof and to provide a simple arrangement of water cooled supporting members or girders for supporting the arch structure We have herein shown our invention as embodied in a furnace having a traveling chain grate by which a layer of fuel is lfed from the feed end of the furnace rearwardly, but it-will be obvious that it may beapplied to furnaces having other forms of grates arranged to advance the fuel through the furnace duringcombustion thereof.

The present is a divisional application under 'a prior application filed by uson the 12th day of April, 1909, Serial Number 439,290. t

As shown in the drawings -Figure 1 is a vertical, longitudinal section of a boiler furnace provided withva deflecting partition, wall or arch, embodyingvour invention, taken on une i-siof Fig. 2. Fig. a is a horizontal i section taken on the indirect line 2-2 of Fig. 1.-

Asshown in the drawings, 10 designates asl afivhole. the front wall of the furnace; 11, 1.1 the side walls thereof; 12 the fuel feeding hopper at the frcnt wall; 13 the traveling or chain grate upon'which the fuel is fed and by which it is advanced into and through the furnace, and 14 designates the bridge wall of the furnace located at the rear of the grate. A vertically movable gate 15 controls the feedof the fuel from the hopper 12 to the traveling grate. f

2O designates, as al whole, the deflecting partition, wall or arch of the furnaceto4 which our invention relates. Said partition, wall or arch extends forwardly and upwardly Vfrom the bridge wall to a point near partition, -wall or arch, and extends rearwardly from a fire brick wall 23 whichconstitutes part of the front 'wall of the fur- Anace above the fuel feed opening thereof.

' The deiecting partition, .wall or arch to means for supporting the same -are constructed and arranged as follows: The deecting partition, wall or arch consists of a plurality `of tubular, metal supportm mem- -bers 24, 24arranged parallel w1th eac other and transversely of the furnace, and fire brick members 26, 26 which extend between and are supported at theirside margins on which vour present invention relates and the said supporting members. 'I he' supporting members are designed to be cooled by clrculso lation of water or other cooling medium therethrough. They are supported at their ends on the side walls of the furnace `and extend through one side wall thereof (the .left hand wall as lherein shown) for connection, outside of the furnace, with circulating tubes or pipes for supplying cooling water thereto. At the other or right hand side wall of the furnace the tubular members are 'connected in pairs with headers 25 embodied inv said latter wall, said headers affording communication between two adjacent supporting members. The supporting members may be inclosed by fire brick or tile coverings 27 to protect the same from the heat of the furnace and toavoid cooling of the heated gases by direct contact of the latter with the supporting members.

As shown in the drawings, the heat resisting'covering 27 embraces a plurality of fire brick or tile sections 31 and 32, each of which is made of such cross-sectional form as to fit upon and cover a part of the circumference of the tubular member 24 and which is adapted for contact of its lateral faces with one or more like sections and in connection with the same to completely close or cover the said tubular member. Each of such sections is moreover provided with endwise extending, locking lugs 33, adapted for interlocking engagement with correspondingly shaped recesses Bein the adjacent sections l1n such'a manner as to prevent lateral separation of the sections and thereby retain the same in place on the tubular member 24:, as shown in Fig. 2.

The members 26, which span the spaces between and are supported on the tubular members 24, 24:, may be either flat or curved and are formed at their side margins to engage with supporting surfacesy on the supporting members, or on the re brick coverings therefor. As herein shown, the arch sections 26 are inclined or beveled at their side edges and fit correspondingly inclined or beveled seats 28 at the opposite upper sides of the insulating coverings. The arrangement described places the arch members and the supporting portions of the insulating coverings under `compression throughout the dei'iecting partition,

Preferably, when such lling extensions are p wall or arch, a condition in which fire brick, by'

employed, they will be made of slightly less width than the distance between adjoining supporting members or the insulating cover-- ings thereof, thereby accommodating said parts to expansion without undue stress.

- It will be observed that"` the construction described provides a defiecting partition, wall or arch of a minimum depth, while affording means for firmly supporting the same in position over the furnace grate. By decreasing the depth of said partition, wall or arch, as compared to prior practice, we are enabled to materially decrease the height of the furnace, which is a great advantage in point of construction and compactness. The construction described possesses important practical advantages over the massive deflecting arch structure heretofore employed in furnaces which bridge between and are supported on the side walls of the furnace, not only because of the saving of space in the furnace and the lessening of the height of the furnace, but also because the arch is not so liable to break down by its own weight, and while comparatively light its construction is such as to amply support it. Moreover, our improved arch is capable of being more vreadily and economically repaired than the prior massive arch structures. This is obvious from a consideration of the fact that the arch members are so supported on the girders or su porting members as to be readily remove and replaced Without the necessity of disturbing the strucyture of the whole, or any part thereof except the arch members to be removed and,-

replaced. y

We claim as our invention 1. A furnace provided with a deflecting partition comprising a plurality of tubular, metal, supporting members extending transversely between and supported at their ends by the side walls of the furnace, fire brick coverings upon said tubular supporting members, and fire brick members extending between and supported upon the said lire brick coverings, said members being provided with downwardv extensions which occupy the spaces between the said coverings and the lower faces of which are substantially in line with the lower faces of saidl coverlngs. e

2. A furnace provided with a deflecting partition comprising a plurality of tubular,

metal supporting members extending transversely between and supported at their ends on the side Walls of the furnace, ire brick coverings uponthe said tubular supporting members, and fire brick members extending between and supported upon said coverings, said coverings being provided at their upper parts with lateral, inclined bearing faces, and the fire brick members being provided lat their `upper parts with inclined, lateral I,bearing faces engagmg the inclined faces on the coverings and between said inclined bearas our invention, we affix our signatures in ing faces, provided with downwardly prothe presence of two witnesses, this 5th day 1o jecting extensions which occupy the spaces of November, A. D. 1910.

between the side faces of said tire brick HERMAN A. POPPENHUSEN.

5 coverings and the bottom faces of which are JOSEPH HARRINGTCN.

substantially in vline with the'bottom faces Witnesses:

of said coverings. FRANK S. SPOLEN In testimony, that we claim the foregoing R. B. HARRIS.

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