US704879A - Feed-water heater. - Google Patents

Description

' Patented my l5, :902.

K. U U nn B N B nu H m om :FEED WATER HEATER. (Applicacion md Mar. 27, 1902.)

(No Modei.)

UNITED STATES PATENT OFFICE.

RAYMOND H. HORNBROOK, OF` CANTON, GHIO.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 704,879, dai-.ed July 1 5, 1902.

Application inea nach 27,1902. serial ramoner.' un man.)

To all whom, it may concern:

Be it known that I, RAYMOND H. HORN- BROOK, a subject of the King of Great Britain and IrelandLand a resident of Canton, Ohio, have invented certain Improvements in Feed-Water Heaters, of whichthe following is a specilication,

The object of my invention is to so con` struct a feed-water heater that avhigh temperatnre can be imparted to saidgfeed-water by the steam used for heatingpurposes, and it' said heating agent is exhaust-steam the latter can, if desired, be completely condensed.

In the accompanying drawings, Figure 1 is` a longitudinal section of a feed-water heater and condenser constructed in accordance with my invention. Fig. 2 is a transverse section on the line a. a, 1; and Fig. 3 is a transverse section on the line h b, Fig. 1.

The heater has an outer casing l, closed at the opposite ends by convex heads 2 and 3, the latter having a transverse partition 4, whereby theY space within said partition is divided into two chambers 5 and 6, the latter chamber communicating with the feed-water t outlet 7 of the heater.

Within the outer cylindrical casing lis an y inner cylindrical casing 9, Awhichis secured at its opposite ends to a pairl oftube-sheets 10 and 11, the tube-sheet 10 beinganged at the outer edge and this flange being bolted or rivi eted to the outer casing 1, while the outerportion of the tube-sheetV 11 is confined between the flanges of thecylindrical casing l near one end of the heater a feed-water-sup-` plyi'ng branchl, the delivery end of the passage communicating. through opening 16 in the tube-sheets 11 `with the chamber 5 in the head 3.0i the casing. lThe, helical partitionv 12 is preferably'made in the form of an angie-bar, one flange of which-constitutes the partition, the other flange being bolted or riveted to one of the casings of the heater, preferably to the inner casing 9, whereby the partition is thus properly secured in place.

Between `the opposite tube-sheets 10 and 11 extend-two sets of tubes 17 and'19, the tubes 17 communicating at one endwith the chamber 5 ofthe head 3 and the tubes 19 communicating at the same end with the chamber 6 of said head, both sets of tubes communicating at the opposite end with the chamber in the head 2 of the casing..

The tube-chamber 20 of the heater is in communication at one end v' with a steam-inlet branch 2l and at the opposite end with a steam-outlet branch 22, and said tube-chamber also has an outlet branch 23 for the escape of the waterof condensation. Steam entering the chamber 2O at the inlet 21 passes through said chamber in the direction of the arrow Fig. 1,` in contact withthe casing 9 of said chamber and with the tubes 17 and 19 and `finally escapes through the outlet branch 22,

the water resultingfromthe condensation of vthe steam in the chamber 2O escaping through the branch 23. The feed-water enters the chamber 14 through the branches 15 and travels in a spiral course in the direction of the arrows y around the heated casing 9, passing from said passage 1 4 into the chamber 5 of the head 3 through the openings 16 in the tubesheet 11. From said chamber 5 the feed-water heater passes in the direction of the arrows y', through the tubes 17, into the chamber within the head 2 4of the casing and from the latter in the direction of the arrows y? through the tubes 19 andwinto the chamber 6 of the head 3, from which'it escapes through the outlet branch 7. The water is'thus exposed three timesito the heating action of the steam-Inst,x when it is circulating around the casing 9 'of the heatingchamber; secondly, when passing through the tubes 17, and, lastly,=when passing through the tubes 19. Hence the water is heated to a highy temperature by the steam, and the heating capacity of the apparatusin proportion to its size is very great.

-At the same time there is a'corresponding condensation of the steam employed, and'ifthe-heatingagent iseXhaust-steam from an Vengine or pump I may, if desired, effect complete condensation of the same by introducing into the discharge IOO branch 22 of the heater a rose or sprayer 24,

communicating with a water-supply pipe 25,

condensation of the steam, which, with the lIC) added supply of water, escapes through the drainage-outlet 23, this drainage, if desired, being conveyed to a storage-tank to be added to the water-supply for the heater, or, if desired, being conveyed to the supply branches 15 or either of them.

The securing of the angular partition l2 to the inner casing 9 of the heater serves to stien and strengthen the same and enables it to resist either bursting or collapse. Hence I am enabled to use comparatively thin metal for said inner casing 9, with corresponding freer transmission of heat from the steam within the casing to the Water surrounding the same.

In the use of my improved heater the conditions above described may be reversed; that is to say, the feed-water may circulate through the chamber 20, and the steam may take the course prescribed for the water; butA the use of the heater in the manner before set forth is preferred.

I am aware that it has heretofore been proposed to construct feed-water heaters with steam-chambers containing two sets of tubescommunicating with the chambered heads, so that the water is caused to iiow first in one direction through one set of tubes and then in the opposite direction through the other set, and I am aware also that feed-water has been compelled to flow through spiral passages and that water jets or sprays have been introduced into the steam-inlet passages of feed-water heaters. I-Ience I do not lay claim to either of these things; but

I claim as my invention and desire to secure by Letters Patentl. The combination, in afeed-water heater, of an outer casing having chambered heads, an inner casing containing a chamber having inlet and outlet and closed at its opposite ends by tube-sheets whereby said internal chamber is separated from the chambered heads of the casing, tubes connecting said sheets and passing through the chamber within the inner casing, and means whereby fluid is caused to iiow through the chamber between the inner and outer casings and between the tube sheets of the heater and through the tubes of the same, substantially as specified.

2. The combination in a feed-water heater, of the outer casing having chambered heads, one of which chambers is divided into two parts, an inner casing containing a chamber with inlet and outlet, tube-sheets closing the opposite ends of said inner casing, and separating the chamber within the same from the chambers within the heads of the outer cas ing, tubes extending through said internal chamber and connecting the oppositetubesheets, both sets of tubesheets communicating with the chamber in one of the heads, and each setvof tubes communicating with its respective chamber in the other head, one of the latter chambers being in communication with the annular space between the inner and outer casings and between the tubesheets of the heater, and the other being in communication with the supply or discharge branch, substantially as specified.

3. rlhe combination in a feed-water heater, of an out-er casing having chambered heads, an inner casing containing a chamber with inlet and outlet, tube-sheets closing the opposite ends of said casing, and separating the saine from the heads of the outer casing, tubes connecting said tube-sheets, a helical partition whereby the annular chamber be- .tween the inner and outer casings is formed into a spiral passage, and communication between said passage and one of the chambered heads of the outer casing, substantially as specified.

Il. The combination in a feed-water heater, of inner and outer casings, with a helical par tition forming the annular chamber between said casings into a spiral passage, said partition consisting of an angular bar having one of its flanges secured to one of the casings, the other flange forming the partition, substantially as specified.

5. The combination in afeed-water heater, of inner and outer casings, with a helical partition forming the annular chamber between said casings into a spiral passage, said partition consisting of an angular bar having one of its iianges secured to the inner casing, sub- A RAYMOND H. HORNBROOK.

Vitucsses:

-A. S. GRIFFIN, I-I. F. AKE.

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