US547107A

US547107A - Boiler-furnace

Info

Publication number: US547107A
Authority: US
Publication date: 1895-10-01
Anticipated expiration: 1912-10-01

Description

(No Model.) 2 Sheets-Sheet 1.

' O. A. ANDERSON.

BOILER FURNACE.

. No. 547,107. I Patented 001;. 1, 1895.

ANDREW B GRAHAM,PHOTOiJHQWASHINGTOND I:

(No Model.) I 2 Sheets-Sheet 2.

O.A.ANDERSON. BOILER FURNACE.

No. 547,107. Patented Oct l, 1895.

ANDREW 5.6RAHAM, PHOTO-H1110 wnsmmrmu' D t:

Units rates Pant CHRISTIAN A. ANDERSON, OF KAUKAUNA, WISCONSIN.

BOILER- FURNACE.

SPECIFICATION forming part of Letters Patent No. 547,107, dated October 1, 1895.

Application filed April 15, 1893. Renewed March 30, 1895- Serial No. 543,909- (No model.)

To all whom it may concern.-

Be it known that I, CHRISTIAN A. ANDER- SON, a citizen of the United States, residing at Kaukauna, in the county of Outagamie and State of Wisconsin, have invented a new and useful Improvement in Boiler-Furnace Settings, of which the following is a specification. My invention relates to the arrangement in two horizontal planes in a furnace of two or more boilers for the purpose of making steam for heating purposes or forproducing motive power, either two or three boilers being adapted for the arrangement, and the boiler or the boilers, if there are three in the nest in the lower one of said planes, being arranged for receiving the entire heat arising from the combustion of the fuel directly under and through the tubes thereof, the other boiler being located in the higher plane and receiving the heat remaining unexpended after it has passed under and through the tubes of the boiler or the boilers of said lower plane. The boiler of the higher plane is supplied with water from any available source, which water is heated therein to a high degree of temperature, after which it is delivered to the boiler or the boilers of said lower plane, and the object of this arrangement is to utilize to the greatest extent possible the heat of the fuel which is burned, and also to supply the steam-making boiler or boilers of the lower plane with water of a high degree of temperature and from which the lime or other mineral impurities have been removed. I attain these objects by means of the arrangement of the boilers in a furnace-setting as illustrated in the accompanying drawings, in which- Figure 1 is an end view of three boilers in a furnace embodying my improvement, the boiler-front and the front of the breeching of all of the boilers being removed and only the brickwork of the furnace-wall being shown from a point just below the bridge-wall to its top. Fig. 2 is a longitudinal elevation of the boiler-setting as it appears in looking at it toward the left from the line a a of Fig. 1, a portion of the boiler-front and of the bridge-wall with a grate-bar extending from one to the other being shown and a portion of the breeching and of the brickwork of the furnace-wall being broken away for the purpose of a better illustration of the several parts. Fig. 3 is an end view of the improvement having but two boilers in the furnace, the boiler-front and the front of the breeching of the two boilers being removed. Fig. 4. is a longitudinal and vertical section of the two boilers and their setting, taken upon the line b b of Fig. 3. Figs. 5 and 6 are upon a reduced scale, Fig. 5 being an end view of the upper boiler-supporting casting as shown in Fig. 1, and Fig. 6 is a vertical section longitudinally of a portion of each end of said casting as seen in looking toward the left of the line 0 c of Fig. 5.

Similar figures of reference indicate like parts in the several views.

1 1 indicate the brick walls of the furnace immediately about the sides of the lower boilers; 2 2, the walls about the rear end of said furnace; 3, the lower boilers; 4 4c, the upper boilers; 5, bridge-walls; 6, boiler-fronts; 6', a door of the front; 7, grate-bars; 8, brackets which are secured to the lower boilers for supporting them upon the side walls of the furnace; 9, a series of tubes which extend lengthwise of the lower boilers from end to end; 10, fire-chambers under each lower boiler; 11, flues extending from said fire-chambers to the rear end of each lower boiler for carrying off the products of combustion; 12, return-flues at the rear end of each lower boiler for conducting said products of combustion to the tubes 9; 13, a flue which extends under the upper boiler lengthwise thereof for receiving said products; 14, a breeching for receiving said products from the tubes 9 and conducting them into the due 13; 15, a series of lines arranged in the upper boiler and extending from one end thereof to the other; 16, a return-flue at the rear end of the upper boiler for conducting the heat, &c., from the fine 13 to the series of flues 15; 17, a breeching at the front end of the upper boiler for conducting the remaining heat and smoke to the chimney; 18, the base of a casting having curved sides 18', a straight central fiue-dividing plate 18", and cars 18 upon each side of the upper edge of said plate for supporting the upper boiler upon and for forming within its curved sides the flue 13; 19, safety-valves arranged upon the several boilers; 19', pipes for connecting said valves to the boilers; 19", steam-escape pipes; 20 20, steam-delivery pipes for carrying the steam from the boilers;

21, a drum or pipe connecting the pipes 20 of the boilers in Figs. 1 and 2; 22, a watersupply pipe for supplying the upper boiler with water; 23, a pipe connecting the upper to the lower boiler for delivering water from the former to the latter; 2t, blow-off pipes extending from the lower part of each boiler; 25 25, brackets secured to the upper boilers for supporting them; 26, iron pillars within the side walls of the furnace in Figs. 3 and 4, upon which the upper boiler is supported; 26, iron rods connecting each pair of said pillars for preventing the pillars from spreading apart; 27, manhole-plates upon the several boilers; 28, hand-hole plates upon the upper boilers.

The important features of my improvement are the arrangment of the combustion-chamher under the lower boiler or boilers,the flue leading therefrom, the return-flue at the rear end of the furnace, the series of tubes 9, the breeching connecting with said tubes at the front of the boiler, the flue under the upper boiler, the return-flue at the rear end of the upper boiler, the flues through the upper boiler, and the breeching at the front end of the upper boiler leading to the chimney, in connection with a watensupply for the several boilers in the order shown and the delivery of steam from the lower boiler or boilers.

The boiler or boilers of the lower plane are arranged within brick walls and are provided with the usual boiler-front, supporting-brackets, grates, and bridge-wall, each one being inclosed with aside wall its entire length, whereby the combustionchamber and flue leading therefrom are separated from those of the other from one end of the furnace to the other. After the heat from the burning fuel has passed under the boilers of the lower plane it ascends and passes through the tubes 9 and thence under the boiler of the upper plane. A flue-division plate 18 is provided in the arrangement shown in Figs. 1 and 2 fordividing the flue under the upper boilerinto two equal parts longitudinally of the boiler. This division-plate is only used when there are two boilers in the lower plane and is for the purpose of keeping the products of combustion from each of said boilers separate from each other until they have nearly reached the rear end of the upper boiler. Fair results may be obtained if the heat from the two boilers is merged into a single flue; but the divided fine is preferable.

It is often necessary in running the boilers to sweep out the fines in order to secure a perfect draft, and for doing this to one boiler while-the other one is kept running the divided flue is desirable. The flue-dividing plate may be cast in sections longitudinally of the boiler and its base provided with arms extending upward, upon the upper end of which arms the upper boiler is supported by means of brackets 25, which brackets are secured to the boiler. The outer arms 18 are concave in form upon their inner sides and form the inclosing sides of the flue under the upper boiler and may be lined with brick, lireclay, or other desired lining; The central division-plate is provided with cars 18" for the boiler to rest upon.

Vhere there is but one boiler in the lower plane, the upper one requires no flue-division and may be supported upon brick walls, as shown in Figs. 3 and 4.. Brick walls may also be used for supporting the upper boiler when there are two boilers in the lower plane by placing the lower boilers at a sufficient distance apart for allowing the necessary supporting-walls for the upper boiler.

In Figs. 3 and 4 pillars 26 are shown for supporting the upper boiler and its side walls. These pillars may be provided with bases for resting upon a suitable foundation and each pair of pillars may be connected together with bolts 26 within the brick walls, as shown, for the purpose of strengthening said walls. Brackets 25, which are secured to the boiler 4, rest upon the pillar-tops and support said boiler. The fine 13 is formed under the boiler 4' by means of the brick side walls and a brick filling underneath the boiler. An arch is turned below the flue 13, but is only for the purpose of lessening the number of brick which are required for the furnace-wall.

I do not confine my invention to the form of the upper-boilersupports which are shown, to the particular arrangement of the boilersupporting walls, or to any particular material for their construction. The upper and lower boilers are shown with their ends uneven with each other; but this is not a necessary element of their position, they being so illustrated for the easier distinguishing of the upper from the lower one.

The fines for the return of the heat, dsc, from below the boiler or boilers of the lower plane into the tubes thereof are made separate from each other and also separate from the return-fines of the upper boiler. A plate 12' is provided, which extends transversely of said boiler or boilers the necessary distance and from the rear boiler-wall to said boileror boilers, to which they may be removably connected by resting upon a bar 12", which bar may be secured to the boiler in any suitable manner. These plates form the top of the return-fines at the rear end of the furnace. Similar plates 16 are provided for the closing of the tops of the return-flue at the rear of the upper boiler.

At the front end of the boilers a breeching 14 or 14' is provided for conducting the heat, &c., from the tubes of the lowerboiler or boilers under the boiler of the upper plane, and also a breeching 17 for conducting the smoke, &c., from the fines of the upper boiler to the chimney.

In Fig. 1 the division-plate 18 with its base 18 is extended forward the necessary distance for connecting with the breeching 14; for conducting the heat, &c., underthe upper boiler, and it may be extended at the rear in Fig. 2 for forming the bottom of the return for said heat, or said return may have its bottom and sides built up of brick.

The upper boiler is to be supplied with water from some suitable source through the pipe 22 by means of a pump or suitable device, the time and amount of said supply being regulated by means of the valve 22'. This boiler is to be kept full or nearly full at all times and the boiler or boilers of the lower plane supplied from it through the pipes 23, said pipes being provided with valves 23 for shutting off the supply, as desired. Theupperboilerbeingconnected with the lower ones only by the pipe 23, which pipe extends from out of the upper side of the boiler, said boiler must be full and sufficient pressure applied so that the water will overflow and supply the lower boiler or boilers. The upper boiler being large and used for heating the water to a high degree of temperature before delivering it to those upon the lower plane, the lime and other mineral impurities have ample time to become separated from the water therein, whereby water of a pure quality and high degree of temperature is provided for the supply of the steamproducing boiler 0r boilers.

The lower boilers may be provided with tubes 9, as shown, or with fines of alarge size, the small tubes being preferred for their better distribution of heat, and as the water therein is comparatively free of scale-producing material after it has passed through the upper boiler no difficulty is likely to occur from that source.

The upper boiler I make with large flues, the area of which, it is essential, equals or exceeds the combined area of the tubes or fines in the boiler or boilers of the lower plane. These Flues being large and of the necessary distance apart, they can be reached by the boiler'cleaner upon their entire surface for removing any scale which may form.

Steam is taken from the lower boiler or boilers through the

pipes

20 or 20, from which it can be delivered to the desired point. Two boilers being used in the lower plane, the pipes 20 20 are connected with a larger pipe or drum 21, from which the pipe 21 extends for carrying the steam where desired.

Each boiler is provided with a safety-valve 19 and blow-off pipe 24:, which latter may have valves at a convenient point outside of the boiler-wall.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination in a boiler furnace setting of a nest of boilers of approximately equal length arranged parallel with each other in two horizontal planes of different elevation,each boiler of the lower plane being arranged in a diagonal direction from a boiler in the upper plane, those in the lower plane being provided with a series of comparatively smalltubes arranged longitudinally' thereof, and the boiler of the nest in the upper plane having flues similarly arranged of a larger size than the aforesaid tubes, said boilers being so arranged that the heat and gases first pass under the boiler, or boilers, of the lower plane, then return through the tubes thereof, then pass under the boiler of said nestin the upper plane, returning then through the fines thereof to the front of the boilers, and then pass into the chimney, the boiler of the upper plane being provided with a water supply and being used as a water heater, the water from which after being heated is conducted to and supplies the boiler, or boilers, of said lower plane, substantially as described.

The combination in a boiler furnace setting, of a nest of boilers of approximately a uniform length, arranged parallel with each other in horizontal planes of different elevation, each boiler of the lower plane being arranged in' a diagonal direction from a boiler in the upper plane, the boiler of the nest in said upper plane having a series of lines extending from end to end thereof, and communicating at their rear ends with a line extending longitudinally with, and under said boiler to its front end, and at their front ends communicating with a breeching for carrying the smoke, &c., from said fines to a chimney, said boiler being provided with a water supply pipe, and with a Water delivery pipe extending from the top of said boiler to a boiler, or to the boilers, of said lower plane, each boiler of said lower plane being provided with a series of tubes extending longitudinally from end to end thereof, and with a boiler wall upon two sides thereof, extending from the front to the rear of the furnace, and having also a boiler front, a bridge wall, and grate bars extending from said front to the bridge wall, and forming thereby, a fire or combustion chamber, under each boiler of said lower plane, a flue extending from said chamber toward the rear end of the furnace and communicating with a series of tubes of the boiler over said flue, a breeching at the front end of said boiler for conducting the products of combustion from said tubes to the afore' said flue which is arranged under the boiler of the upper plane, and a steam delivery pipe extending from the boiler, or boilers, of said lower plane, substantially as set forth.

3. The combination in a boiler furnace setting, of a nest of boilers of approximately a uniform length, arranged parallel with each other in horizontal planes of different eleva tion, one boiler of the nest lying in the upper plane, and one upon each side thereof in a diagonal direction, lying in the lower plane, the boiler of said upper plane having aseries of fines extending from end to end thereof and communicating at their front ends with a breeching for conducting the products of combustion from said fines to a chimney, and at their rear ends communicating with a flue extending longitudinally with, and under said boiler to its front end, said boiler being provided with a water supply pipe, and with a water delivery pipe extending from the top of said boiler to each boiler of said lower plane, each boiler of said lower plane being provided with a series of tubes extending longitudinally from end to end thereof, a boiler wall upon two sides of each boiler extending from the front to the rear of the furnace, and having also, a boiler front, a bridge wall, and grate bars extending from said front to the bridge wall, and forming thereby, a fire or combustion chamber, under each boiler of said lower plane, a fiue extending from said chamber toward the rear end of the furnace and communicating with the series of tubes of the boiler over said line, a breeching at the front end of each of said boilers for conducting the products of combustion from said tubes to the aforesaid flue which is arranged under the boiler of said upper plane, and a steam delivery pipe extending from each boiler in said lower plane, substantially as described.

4. The combination in a boiler furnace setting, of a nest of boilers of approximately a uniform length, arranged parallel with each other in horizontal planes of different elevation, one boiler of the nest lyingin the upper plane, and one upon each side thereof in a diagonal direction, lying in the lower plane, the boiler of said upper plane having a series of tlucs extending from one end thereof to the other, and communicating at their front ends with a breeching for conductingthe products of combustion from said fines to a chimney,

and at their rear ends communicating with a flue extending longitudinally with, and under said boiler to its front end, said last named flue being divided by a vertical partition which is arranged under said boiler, and extends from near the rear end of said boiler to the front of its breeching at the front end thereof, said boiler being provided with a water supply pipe, and with a water delivery pipe extending from the top of said boiler to each boiler of said lower plane, each of said latter boilers being provided with a series of tubes extending longitudinally from end to end thereof, a boiler wall upon two sides of each boiler extending from the front to the rear of the furnace, and having also a boiler front, a bridge wall, and grate bars extending from said front to the bridge wall, and forming thereby, a fire 0r combustion chamber, under each boiler of said lower plane, a fine extending from said chamber toward the rear end of the furnace and communicating with the series of tubes of the boiler over said flue, a breeching at the front end of each boiler for conducting the products of combustion from the tubes thereof to one division of the divided fine which is arranged under the boiler of the aforesaid upper plane, and a steam delivery pipe extending from each boiler in said lower plane, substantially as set forth.

CHRISTIAN A. ANDERSON. Vitnesses:

LovEL SrowE, MARY IIALVERSON.