US891399A - Feed-water heater. - Google Patents

Description

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Douglas firm/3 B) ATTXS THE "cams PETERS cm. WASHINGTON. n. c.

DOUGLAS BREWS, OF CLEVELAND, OHIO.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented June 23, 1908.

Application filed November 11, 1907. Serial No. 401,577. I

To all'whom it may concern:

Be it known that I, DOUGLAS BREWS, a citizen of the United States, residing at Cleveland, in the county of'Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Feed-Water Heaters, Purifiers, and Surface Blowers for Steam- Boilers, and do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Myinvention relates to a feed water heater, purifier and surface blower for steam boilers, and the invention consists in the construction and combination of parts substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a cross section of the front end of the boiler showing my invention in end elevation, and Fig. 2 is a longitudinal sectional elevation of a boiler showing my invention in side elevation.

The objects of the invention as thus shown selves at last in accretions or scale on the tubes and surface of the boiler, as well as in other objectionable forms, especially if the 'Water be fouled with vegetable, or mineral matter or both, as often occurs. The invention contemplates trapping the mass of foreign matter of substances of all forms that will deposit by gravity, and the removal of floating matter by blowing the same from the surface of the water, thus largely purifying the water before it enters the boiler areas and cleansing it of matter that may escape such initial operations. To these ends I em ploy the novel construction shown herein, comprising a main feed water pipe P, which has as many joints as may be needed and runs lengthwise of the boiler in the top thereof in the steam space or area from rear to front, the entrance of the pipe within the boiler being preferably by an elbow or vertical portion 2 extending from about the normal water level to the top portion of the boiler and having a valve control at 4 outside at the end of the boiler. Water being admitted by this line of pipe, it is discharged at the front of the boiler into a vertically disposed tube D, having a reduced lower section (1 extending down into sediment deposit or trapping chamber O about half way the depth thereof, more or less, and which extension (1 is sufficiently smaller in cross section than said chamber O to afford an overflow water space between them. The

upper end of said chamber or cylinder C is open and rises to about the normal Water level in the boiler or just a little below such level, so that the surface water may be blown off through said chamber and the chamber itself be cleansed of its deposits through blow-out pipe E leading therefrom when live steam is drlven through the same for these purposes. Said blow-out pipe E discharges out of the rear end of the boiler, where a suitable cook or valve 6 controls the discharge, and connection of said pipe is with the lower end of chamber 0. The tube or pipe D is open at both ends, and when cook or valve 6 is opened for blow-out purposes steam passes down through tube D and creates a pow- I erful suction from the surface of the water in feed water strikes the water level at the top of said chamber in tube D, so that deposits in said chamber are not agitated thereby while the water quietly overflows from the top of the chamber. A T shaped couplin 10 is removably afiixed to the bottom 0% the said chamber for connection of pipe E, in order that a man may unscrew the plug 12 therein and run a wire into the chamber, if necessary, to stir the deposits to remove the same.

An elbow 14 a pears in pipe P near to its top and exposed its full depth to thesteam 15 tube D which faci itates arrangement of said in the boiler, a feed water pipe extending pipe in respect to said tube. lengthwise through the top of the boiler and WVhat I claim is discharging at its end directly into the open A steam boiler, a combined surface scummouth of said feed water heater D, and a ming and blow-off receptacle of tubular I valve controlled discharge pipe leading from 20 shape erected vertically in the front end of" the bottom of said sediment receptacle. the boiler and having its upper end open full In testimony whereof I sign this specificawidth and substantially even with the water tion in the presence of two witnesses.

level in the boiler, a feed water heater D of tubular form having a relatively reduced] DOUGLAS BREWS' lower end immersed in said receptacle and Witnesses:

discharging thereinto below said water level R. B. Mo'sER,

and having its'upper half open full width at F. C. MUSSUN.

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