US879362A - Feed-water heater. - Google Patents

Description

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FEED WATER HEATERI4 APPLICATION FILED MAR.17,1906.

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WILLIAM H.' BROWN, OE MINNEAPOLIS, MINNESOTA.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed March 17| 1906. Serial No. 306.620-

To all whom it may concern:

Be it known that I, WILLIAM H. BROWN,

of Minneapolis, Hennepin county, Minnesota,

have invented certain Imlprovements in Feed- Water Heaters, of Whic the following is a specification.

This invention relates to improvements in feed-water-heaters for boilers, and the invention is particularly adapted. for application to the boilers of locomotives.

lThe obj ect of the invention is to provide a feed-water-heater by means of which the Water may be raised toa high temperature before entering the boiler.

Other objects of the invention will appear from the following detailed description,` taken in connection with the accompanying drawings, in which,

Figure 1 is a side elevation of a locomotive boiler, partly broken away, and showing m improved feed-water-heaterapplied thereto. Fig. 2 is a partial side elevation of the receptacle or drum of the feed-water-heater, showing the inclosing drum in longitudinal section. Fig. 3. is a vertical section on line 3 3 of Fig. 2. Fig. 4 is a vertical section on line 1-4 of Fi 1. The locomotive-boiler 2 herein shown may l be of any ordinary or preferred constructlon.

It is rovided with the usual grate `3, fire-box 4, tube-sheet 5, tubes 6, smoke-box 7; smokestack 8, exhaust-nozzle 9 and netting 10. Above the fire-box ,4 is the usual crownsheet 11.

. exhaust from each engine cylinder.

Al Water-heating drum or chamber 12 is rovided, preferably of cylindrical form, and having preferablyV the heads or end sheets 13-13. This chamber has connected to it a water sup ly or inlet pipe 14, provided with a suitable check-valve 15. The injector pipe connects with the pipe 14, and by this means .the lwater to be heated is fed into the heating chamber or drum 12. A pipe 16 leads from the chamber 12 to the boiler, as hereinafter described.

The heating chamber 12 is arranged within a steam drum 17, provided with the inlet pipes 18, one of which is connected to the At the opposite end of the drum 17 is the exit pipe 19 having a suitable regulating valve 20. The exhaust steam from the engi-ne cylinders enters the drum through the pipes 18, passes 4Of these pipes is along and around the chamber 12, and also passes through the tubes 21, a series of which are arranged in lsaid heating chamber with their ends mounted in its end-plates. The

tubes 21 are preferably spirally coiled and I any desired part thereof maybe arranged -in said chamber (see Figs. 2 and 3). The drum 17 is provided with a suitable'covering 22, formed of asbestos, or other non-conductor of heat. I prefer also to lprovide the small steam pipes y23 which extend from the pipes 18 and project into the water pipe 16. Each check-valve; and small jets of steam are injected into the- Water pipe 16 (see Fig; 2), .forthe purpose of fur ther heating the water` 'after it leaves ,theI

rovided with a Suitable y meansofsaid pipes 'loy chamber 12 and while on its Way ,to the For the pur ose of additionally lheating the water in t e vchamber 12, vI provide .a heating coil 24' arranged in the smoke-box 7 abovethe exhaust pipe 9. This coilis con@ nected to the chamber 12 by and 26, one connectedy with itheup er art and one with the lower art lof said o am er, so that a circulation `o water through said coil is constantl maintained. A steamcoil 27is ypreferab y looatedin the upper part of the fire-box, and this coil isconnected to the chamber 12 by the pipes 28 and 29 so that a. circulation of Water is constantly maintained through the coil 27.

The heated water from the chamber 12 is conducted to the boiler through .the pipe 16, and I prefer to make four connections between ythis pipe and the Water-leg of the rounds `the lower part of the fire-box (see Figs. 1 and 4). For this purpose I provide pipes 30 and 31extendin around the outer wall of the fire-box, and Iiaving the branch pipes 32 thatextend through the outer shell of the boiler, and that are provided with check-valves 33. With this arrangement it will be seen that the feed-Water enters-the' water-leg of the boiler near the lower end thereof. I also prefer to rovide a series of pipes 345, 34, at each side o the fire-box, that `are connected at their lower ends to the water-leg of the boiler, and at their up r ends to the crown-sheet. These pipes urnish means for rapidly heating the" water the pipes 25 X boiler, or the portion of the boiler that surexhaust cylinders of th which, entering'the water-leg from the feed l, chamber, .and steam pipes having suitable pipe, willy move downward 'and will flow into i valves leading from said exhaust pipes and said pipes, and pass upward through said pipes in to the boiler above the crown-sheet. y this means there will be Aarapid heating of the water soon after it enters the boiler.

It will be seen thatthe feed-Water-heater herein described insures raising the water to a high temperature by means of the exhaust steam from the engine cylinders, and thereby utilizes the heat 4 from this steam that would` otherwise be Wasted. The heating Icoil that is located in the upper part of the fire-box also aids materially in raising the temperature of the feed-water. having the Water enter theboiler in the narrow space around ,the lower part of the fireb'ox and then pass upward through the ipes 34., additional heating is secured, an the production of steam is greatly facilitated.

The details of the construction may be varied in many particulars Without departing from my invention.

I claim as my invention:

1. .The combination, with a locomotive boiler, of a drum mounted thereon near the smoke stack and having double walls with a non-heat-conducting material between them, a chamber arranged within said-'- drum and spaced from the walls thereof, a water supply plpe connected with said chamber, a series of pipes arranged within said chamber having their ends opening thrpugh the ends of said chamber into the space between it and the walls of said drum, pipes leading from the e ocomotive and opening into the space between said chamber and drum and whereby the exhaust steam will be admitted to said 'spaceand to said spirally coiled pipes in said chamber, anda ipe leading from said chamber to the bo1ler, substantially as described.

2. The combination, with a boiler, of 'a drum mounted thereon, a chamber provided within said drum and spaced from the walls thereof, a series of pipes provided within said chamber and having their ends projecting through the heads ofsaidy chamber and com- `municating with the s ace between said chamber and the walls o said drum, a water inlet pipe communicating with the interior of said chamber, an outlet ipe leading from said chamber to the holler, and exhaustv steam pipes leading rom the en ine cylinders and through the walls of said rum into the s ace between it and said chamber, substantlallly as described.

3. The combination, with a boiler, of a drum mounted thereon, a chamber provided within said drum and spaced fromthe wall thereof, a waterinlet pipe for said chamber, an outlet pi e leading upward from the top of saidV cham er, exhaust steam pipes leading from the engine cylinder: and communicating with the space' between said drum and projecting into said water outlet pipe.

4. The combination, with a locomotive boiler having a stack and an exhaust nozzle arranged below the stack, of a drum mounted on sa1d boiler, a chamber arran edwithin.

wall of said chamber and the other' pi e,

through the upper wall thereof, substantla y as described.

5. The combination, with a boiler having a fire box,l of a chamber 'located on said boiler, a water supply pipe for said chamber, a pipe leading from the top of said chamber to said boiler, a drum inclosing said chamber, pi es leading from the exhaust into the space etween said. drum and chamber, a coil arranged in the upper part of said fire box, and

pipes leading from said coil to said chamber, one of said pipes entering the lower walls of said chamber and the other pi e entering the up er wall of said chamber w ereby the circu ation of water from said chamber will be established through the coil in said iire box.

6. The combination, with a locomotive boiler, o'f a chamber mounted thereon, a series of prilp'es provided within said'chamber, a water 1 et pipe communicating with the interior of sald chamber, an outlet pipe leading from said chamber to the boi er, drum heads provided at each end of'said chamber and s aced therefrom, and exhaust steam pipes eading from the engine cylinder andl communicating with the spaces between said chamberiand drum heads and through said amber, substantially as'described.

7 The combination, with a .locomotive boiler h'aving a stack and an exhaust nozzle arranged below said stack, a chamber mounted on said boiler, a series of pipesprovided in said chamber, and extending through the heads thereof, drum heads provided at each end of said chamber and spacedlfrom the heads thereof, pipes leading from said exhau'st nozzle and communicating with the pipes in said chamber through the spaces between said heads, a water su ply pipe leading into said chamber, `an out et pipe leadin from said chamber to the boiler, a coil locate between said stack and said exhaust nozzle, pipes leading from said coil and one pipe extending through the lower wall of said chamber and the other pipe through the upper wall thereof. i

8. The combination, with a locomotive splaces with the pipes extending through saidboiler havin a stack, and an exhaust vnozzle leading from said coil and extending through 10 arranged be ow said stack, of a chamber the Walls of said drum into said chamber, mounted on said boiler, a drum in'lclosing said substantially as described.

chamber. and spaced from the Walls thereof, In Witness whereof,- I have hereunto set pipes leading from said nozzle into said drum, my hand 'this 14th da of March 1906.

y a Water su ply pipe leading into said cham WIL IAM IrI.` BROWN.

ber, an out et pipe leadingfromsaid chamber vllVitnesses': to the boiler, a coil located between said. C. G.-I-IANSON,

, stack and said exhaust nozzle, and pipes A, C. PAUL.

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