US1589999A - Steam boiler - Google Patents

Description

June 22 1926. 1,589,999

P. THOMSEN STEAM BOILER Filed April 28, 1925 WITNESS INVENTOI? Patented June 22, 1926.

UNITED STATES PAT PETER THOMSEN, 0F CASSEL, GERMANY, ASSIGNOR T0 SCHMIDTSCP IE HEISSDAMPF GESELLSCHAFT M. B. EL, ,0! CASSEL-WILHELMSHOHE, GERMANY.

STEAM BOILER.

Application filed April 28, 1925, Serialll'o. 26,324, and in Germany May 2, 1924.

My present invention relates to steam boillevel of the lower containers and preferably and-water containers or airanged laterally of the grate, at the same level therewith; the'grate may be located between the drive wheels of the locomotive.

By providing two upper containers, I am enabled to make them of smaller diameter and therefore of thinner metal than when a single upper container or drum is employed. The manufacture'of the boiler is thus made easier and less expensive.

It is important that a thorou h water circulation be insured in the containers, the fire box walls, and the water tubes. For this purpose, I connect the containers with the water chambers of the fire box in such a manner that water will circulate through all of the containers and through the water chambers. For instance, the water chambers on" each side of the fire box may be connected by pipes in which the water ascends, alternately with the upper containers loeated on the same side and on the other side respectively, while the only direct con nection from each lower container to the fire box is b pipes leading to the respective water c amber on the same side, the water travelling downwardly in these latter pipes. a

A satisfactory and preferred example of my present invention is illustrated b the accompanying drawings, in which i 1 is a somewhat diagrammatic longitudinal vertical section of a locomotive boiler em= bodying my invention; Figs. 2 and 3 are vertical cross sections on lines 2-2 and 3-3 res ectivel of Fig. 1.

The boi or shown com rises four steamrums a, a, b, 1), extending longitudinally from the fire box to the smoke box. They are represented as horizontal, althou h this is not essential. On each side of t e locomotive there is a lower container or drain a or a and a corresponding upper boiler or drum b or I) respectively, the boilers or drums, a, B, on one side being connected by water tubes 0, while the containers or drums a, b on the other side are connected by water tubes 0. The upper drums or containers 6, b are relative- 1y close together, while the lower containers or drums at, a are much farther apart, their spacing corresponding approximately to the gauge of the track on which the locomotive is to travel, as indicated in Fig. 3. The side walls of the fire box are formed by water tubes connected with the upper containers 1). b and with water chambers d located at each side of the grate at a level below the lower containers a, a and preferably between the drive wheels 6 of the locomotive. The two water chambers shown at opposite sides of the locomotive may form part of a continuous water chamber of rectangular or other suitable shape. The pipes f and 7, which lead from the left-hand water chamher (1 in Fig. 3 to the upper containers 6 and b res ect-ively, are arranged in re ular alternatlon, and in close contact wlth each other at their lower portions, so as to form an unbroken or continuous side wall on that side of the fire box. Similarly, on the other side of the fire box, a continuous wall is formed by the lower portions of the pipes g and 9 arranged alternately with each other and leading from the right-hand water chamber at to the upper containers 6 and b respectively. As shown in Fig. 3 (and this is the preferred arrangement) the pipes f are in the same transverse lanes with the pipes g, and the pipes f wil be in the same transverse pi s g. e lower ends of these pipes or tu es f, 7", g, g, where they are connected to the water chambers 42, are made of somewhat reduced diameter, as indicated in Fig. 3. so that the desired close contact may be obtained between adjacent tubes.

On the outer sides of the tubular fire box walls thus formed, I have arranged on each side of the locomotive a second set of tubes )5. and 72. respectively which connect the water chambers 01 directly with the corresponding lower containers or drums a and a respectively. Since the walls formed by the tubes 7", f, g, g, shield the tubes it, it, from the direct heat ofthe combustion gases, the outer tubes It, it, will be relatively cooler lanes with the correspondingand the water will flow therein downwardly, while in'the tubes 7, f, g, g, the water will travel upwardly.

If the water chambers (Z of the fire box were connected only with the respective containers located on the same side of the locomotive, there would be two entirely separate paths for the circulation of the water, one on each side of the locomotive. By employing the arrangement described, according to which each of the water chambers (left and right) is connected with contain-- ers on both sides of the locomotive, I obtain a thorough circulation of water through all four containers and through the fire box.

For instance, starting from the upper lefthand container 7), there is water circulation through the following path: upper lefthand container 72, water tubes 0, lower lefthand container a, down-take pipes h, lefthand water chamber 03, uptake pipes f; upper right-hand container 5', water tubes 0, lower right-hand container a, downtake pipes k, right-hand water chamber 03, uptake pipes 9, upper left-hand container 7). In addition thereto, there is, of course, also an individual water circulation on each side of the boiler, for instance, on the left-hand side such circulation takes place through the following path: upper container 6, water tubes 0, lower container a, downtake pipes k, water chamber d, uptake pipes f, and upper container 6.

In the longitudinal boiler located in front of the fire box, I have rovided casings 2' between the lower containers a, at. These casings serve to .gather the cinders deposited thereon and to cover or close the greater part of the free space remaining between these containers, so that the furnace gases may be properly guided. For this purpose,

the casings i are bent upwardly to a suitable extent at their front and rear ends, as indicated in Figs. 1 and 2. Furthermore, these casings are so constructed and arranged that they may be removed from the boiler forwardly through the smoke box door.

Various modifications may be made without departing from the nature of my invention as defined in the appended claims.

I claim:

1. A boiler comprising a fire box, a smoke box, upper left-hand and right-hand and lower left-hand and right-hand steam and water containers extending longitudinally from said fire box to said smoke box, water tubes connecting the said left-hand containers, other water tubes connecting the said right-hand containers, said fire box having a grate located below the level of said lower containers, water chambers located at opposite sides of said grate, and water tubes connecting said water chambers with said containers and forming side walls for said fire box.

and water tubes connecting said-waterc 2. A locomotive boiler comprising a fire box having a grate located between the drive wheels, a smoke box, upper left-hand and right-hand and lower left-hand and righthand steam and Water containers located above the level of said grate and extending longitudinally from said fire box to said smoke box, water tubes connecting the said left-hand containers, other water tubes con necting the said right-hand containers, water chambers located at opposite. sides'of said grate, between the drive wheels, and water tubes connecting said water chambers with said containers and. forming side walls for said fire box.

3. A boiler comprising a fire box, a smoke box, upper left-hand and right-hand and lower left-hand and right-hand steam and water containers extending longitudinally from said fire box to said smoke box. water tubes connecting the said left-hand con tainers, other water tubes connecting the said right-hand containers, said fire box having a grate located below the level of said lower containers, connected water chambers located at opposite sides of said grate, and water tubes extending upwardly from said water chambers and forming side walls for the fire box, some of the last mentioned water tubes extending from the water chambers to containers on the same side of the boiler while others of said water tubes extend from said water chambers to containers on the opposite side of the boiler, whereby water may circulate through a path including containers and water chambers on both sidesof the boiler.

4. A boiler comprising a fire box, a smoke box, upper left-hand and right-hand and lower left-hand and right-hand steam and water containers, extending lon itudinally from said fire box to said smoke ox, water tubes connecting the said left-hand containers, other water tubes connecting the said right-hand containers, said fire box having at each side water chambers located below the level of the lower containers, uptake water tubes extending from each "of said water chambers alternately to the u per container on the same side and to t e upper container on the other side, and downtake water tubes extending from each of the lower containers to the water chamber on the same side.

5. A boiler com rising a fire box, upper left-hand and rig t-hand and lower lefthand and right-hand steam and water containers extending longitudinally, from said fire box, water tubes connecting the said left-hand containers, other water tubes connecting the said right-hand containers, said fire box having a grate located below the level of said lower containers, water chambers located at opposite sides of said ate,

I lire box, water tubes connecting the lid neeaeee here with said containers and forming side walls for said fire box.

6. A boiler comprising a the box, upper left-hand and right-hand and lower lefthand and right-hand steam and water containers extending longitudinally from said;

salt left-hand, containers, other water tubes connecting the said right-hand containers, said fire box having at each side water chambers located-below the level of the lower containers, uptake water tubes extending from each of said water chambers alternately to the upper container on the seine side and to the upper container on the other side, and downtalre water tubes extending from each of the lower containers to the water chamber on the same side.

if. A locomotive-boiler comprising a fire box having a grate located between the drive wheels, upper left-hand and right hand and lower left-hand and right-hand steam and water containers extending longi tudinally from said tire box and located above the level of said grate, water tubes connecting the said' left-hand containers, other water tubes connecting the said righthand containers, water chambers located at opposite sides of said grate, between the drive wheels, and water tubes connecting said water chambers with said containers and forming side walls for said fire box.

'8. A boiler comprising a fire box, a smoke box, upper left-hand and right-hand and lower left-hand and right-hand steam and water containers extending longitudinally from said lire box to said smoke box, water tubes connecting the said left-hand containers, other water 1 ubes connecting the said right-hand containers, said v tire box having a grate located below the level oi said lower connected water chambers located at opposite sides of said rratc, and water tubes extending upwardly from said water chambers and forming side walls for the fire box, some of said last mentioned water tubes extending upwardly from each of said water chambers to the lower container on the same side of the boiler, while others of said water tubes extend from each water chamber to the upper container on the same side of the boiler, and still others of said water tubes extend from each water chamber to the upper container on the other side of the boiler, whereby a path is ati'orded for the circulation of water through all of said containers and water chambers.

In testimony whereof l have hereunto set my hand.

PETER THOMSEN.

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