US1161134A - Furnace. - Google Patents

Description

D. S. JACOBUS & N. E. LEWIS.

FURNACE.

APPLICATION FILED MAR. 20. 1914.

Patented Nov. 23, 1915 DAVID S. JACOBUS, F JERSEY JERSEY, ASSIGNORS TO THE BABCOCK JERSEY, A GORBORA'IION OF NEW JERS CITY, AND NATHAN E. LEWIS. 0F PLAINFIELD, NEW & WILCOX COMPANY, OF BAYONNE, NEW EY.

Fortunes.

mouse.

Specification of Letters Patent.

Patented Nov. 23, 11915.

Application filed March 20, 1914. Serial No. 825,943.

- To all whom it may concern:

Be it known that we, DAVID S. JAcoBUs and NATHAN E. Lnwls, citizens of the United States, and residing at Jersey City, county of Hudson, and State of New Jersey, and Plainfield, county ofUnion, and State of New Jersey, respectively, have in vented certain new and useful Improvewardly from wall 12 nearly to the first bank of tubes, said arch comprising sections 11 and 15 separated a suiiicient distance to provide an air passage 16. The arches 11 and ll15 are substantially parallel, the latter directing the hot gases into the first bank 'of boiler tubes and into the secondary com bustion chamber above the arch 14-15.

ments in Furnaces, of which the following The outer metal casing 9 is continued downis a specification.

Our invention relates to a furnace construction and more particularly to one used in connection with a Stirling boiler.

The features constituting the invention consist in the particular arrangement of the arches and to means for dividing the air for cooling the arches so as to admit a reguwhich arch vi a standard Stirling boiler into a water drum 1,- the lated amount above the lower or ignition arch of the stoker, and a regulated amount through a passage in the upper double arch, directs the hot gases into the first bank of boiler tubes. Q

The invention will be understood by ref; erence to the accompanying drawings in which Figure 1 is a longitudinal section of a furnace and boiler illustrating one embodiment and application of the invention, the stoker being shown in broken lines; Fig. 2 a section on. the line 22 of Fig. 3, and Fig. 3 a front view of the air regulating damper.

Similar reference numerals lar parts in the several views.

The invention is illustrated as applied to in which the tubes of the three banks 1, 2 and 8 are expanded boiler being fired indicate simiby a chain gratestoker 5 any approved type. --Water boxes 6 extend longitudinally ofthe stoker and these are connected to the boiler circulation through pipes 7 and 8. The boiler parts are inclosed within the usual walls, the front wall comprising an outer metal casing 9.

The furnace chamber 10 is constructed w h the usual ignition arch 11 which extends outwardly from the front wall of the setting. Above the inner end of the ignition arch is built a curtain Wall 12, the arch 11 and wall 12 being spaced apart a sufficient distance to provide an air passage 13.1 Forming the roof which may be of the air from the outside enters between casing9 and th {11, and in front of the 7 and in flowing through the passages 13 and Ward so as to inclose the front ends and side of arches l4 and'15 and wall 12, and the exposed portionvof arch 11, said casing being separated from the brick-work to provide a space for the admission of air through suitable openings therein. The space outside of the arches and curtain wall is closed at its lower end by brick-work 11 and at its upper end by an angle plate 17. To divide or separate-the air to be delivered through the passages 13 and 16 we introduce a seal 18, which may be asbestos packing, in the space between the front of wall 12 and cas- 19, and

between the tpp of wall 12 and arch 14.. The air to he-delivered through the passages 13 and 16 is admitted to the space inside of casing 9 through openings 19 formedin said casing,and to regulate the amount of enteringair we provide a damper 20 having openings corresponding to openings'19 and adapted-t0 be moved between suitable guides to close the openings 19 more or less as may be desired. By this means the air is distributed evenly across the width of the setting.

In operation, with the dampers 20 open, the spaces e upperlside of arch double arch 14-15,

16 cools the arches.

of the main combustion chtllmber is a double arch extending in--.

In practice we have found that by employing the arrangement described the arches can be maintained under conditions where ordinary arches would fail. Practically the full furnace temperature is maintained by reason of the heating of the air in passages 13 and 16, and complete combustion effected both in the main chamber 10 and the secondary combustion chamber abovearch 14-1 5. The amount of air admitted is such that it does .not interfere with the economy of the boiler; in fact, there are beneficial efi'ects imizing of smoke.

through the min- \Vhat we claim and desire to e ure by Letters Patent ot' the l nited States is 1. boiler furnace having a tuel support, a curtain wall over the support. an igji'iition arch extendingoutwardl v from the curtain wall over the file] support. an upper arch extending inwardly from the curtain wall toward the boiler tubes, said upper arch having a. passage for the admission of air to the furnace chamber, an air passage be ing provided above the lower external. arch and separated from the air passage for the upper arch. and each of the said air passages havingits outlet to the combustion chamber at the rear end of its respective arch.

2. A boiler furnace having a fuel support. a curtain wall over the support. an ignition arch extending outwardly from the curtain wall'over the fuel support. an upper arch extending inwardly from the curtain wall toward the boiler tubes. said upper arch having a passage for the admission of air to the furnace chamber. an air passage being provided above the lower external arch and separated from the air passage for the upper arcln each of the said air passages having its outlet to the cmnbustion chamber at the rear end of its respecti e arch. and means for regulating the admission of air to said passages.

3. A boiler furnace havinga fuel si'zpport.

a front wall therefor. an ignition arch extendingoutwardly from the front wall over the fuel support. an air inlet passage over said outwardly extending arch an. upper arch extending inwardl from the front wall toward the boiler tubes. said upper arch beingof double form with air ventilation between. the two portions thereof. and each of the said air passages having its outlet to the combustion chamber at the rear end of the arch.

-'l. A boiler furnace hai ing a fuel support, a front wall therefor. an ignition arch eX- tcnding outwardly from the front wall over the fuel support, an air inlet passage over said outwardly extending arch an upper arch extending inwardl from the front wall toward the boiler tubes. said upper arch being of double form with air ventilation between the two portions thereof. the air passages being separated from each other and having; means for independent regulation.- and each having its outlet to the combustion chamber at the rear end of the arch.

In testimony whereof we have hereunto signed our names in the presence of two subscribing witnesses.

Y DAVID S. JACOBUS. NATHAN E. LEWIS.

\Yitnesses E. P. TERRY. llDI'IH (.rnr.

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