USRE11090E - Feed water heater - Google Patents

Description

E. eoss. Assignor by direct and mesne assignments, to the FEED WATER. HEATER COMPANY.

D FEE-D WATER HEATER. No. 11,090.

Reissued Ju e 24, 1890.

q liimeooeo UNITED STATES PATENT OFFICE.

EDWARD GOSS, OF ST. JOHNSBURY, VERMONT, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE FEED WVATER HEATER COMPANY, OF

SAME PLACE.

FEED-WATER HEATER.

SPECIFICATION forming part of Reissued Letters Patent No. 11,090, dated June 24, 1890.

Original N0. 35 5,989, dated January 11, 1387. Application for reissue filed November 13, 1887. Serial No. 255,456.

To ctZZ whom it may concern:

Be it known that I, EDWARD Goss, of St. Johnsbury, Caledonia county, State of Vermont, have invented an Improvement in FeedlVatcr Heaters, of "which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representinglike parts.

My invention relates to' an apparatus for heating the feed-water for boilers by means of the exhaust-steam, being especially intended for use in connection with a locomotive-boiler, substantially as shown in Letters Patent N 0. 230,190, granted to Chas. H. Magoon, July 20, 1880.

The present invention consists, mainly, in novel details of construction of the feed-water heater, which may be connected with the frame of the locomotive and with the water and exhaust-steam pipes in substantially thesame way as the heater shown in patent to Magoon referred to.

The heater forming the subject of the present invention consists, essentially, of an outer shell or case which receives a portion of the exhaust-steam of the engine, and which is provided at one end with a cast-metal head having double walls provided with a series of transverse partitions, by which it is divided into a series of separate compartments or chambers, lying one above the other. The said head has screwed into it a series of pipes, which extend through the case or shell of the heater, and each of which has its mouth extending across one of the horizontal partitions in the head of the case, so that the said pipe forms a connection or means of communication between the chambers in the headseparated by the said partition. Each of the said pipes is provided with a longitudinal partition, which, when the pipe is screwed into place, coincides with the partitions in the head of the case, the partitions in the pipes extending nearly to the other end thereof, where the said pipes are closed. By this arrangement the feed-water, being forced into the lowest chamber or compartment in the head of the case, will pass longitudinally through the lowermost series of pipes below the partitions thereof, and will then return through the upper part of the said pipes into the next chamberor compartment of the head of the case, from which they will pass down and back through the second tier of pipes into the next compartment above, and so on until it reaches the uppermost compartment in the head of the case, from which it is delivered to the boiler after having been thoroughly ex posed to the exhaust-steam in the case surrounding the pipes. The head of the case near the closed ends of the pipes is shown as provided with supports for the said pipes, which are thus fully supported at both ends and prevented from bending or displacement by the jarring to which the heater is sub jected. I j

Figure 1 is a sectional view of a portion of a locomotive boiler and cylinders and frame work, showing the method of attach ng the heater to the frame-work; Fig. 2, a side elevation, partly in section, on line a; 00, Fig. 3, of

the heater detached, on a larger scale; Fig. 3, a vertical section on line yy, Fig. 2, of the head of the heater; Figs. 4 and 5, details of the passages by which the steam is taken from the exhaust-pipes of the engine to the heatercase, and Fig. 6, a sectional detail of the juuction, showing the said passage with the heatercase.

The heater consists, essentially, of an outer shell or case a, which may be a substantially rectangular box of sheet metal, provided at its ends with flanges a, to receive the heads or bonnets b c.

The head I) is composed of cast metal having two walls Z) 19 and a series of horizontal partitions b dividing the space between the said walls into a series of horizontal compartments, the lowermost and uppermost of which are provided with threaded openings cl d, to which the water-pipes e c, Fig. 1, are connected, the former receiving the water from the pump or forcing apparatus and the latter conveying it from the heater to the boiler. the interior of the case, is provided with a series of openings f, (best shown in Fig. 3,) opposite and extending over the partitions 19 as shown, into which openings are screwed a series of tiers of circulating-pipes g, (see The inner wall Z) of the head 1), next' ment.

Fig. 2,) the opposite ends of which are closed, as shown at g, and are properly shaped at the outside to receive a wrench, as shown at 9 Fig. 2, by which they maybe screwed into the openings in the wall I) of the head b. Each of the pipes g is provided with a series of horizontal partitions g extending longitudinally through it from its mouth to within a short distance of the closed end g, as clearly shown in Fig. 2. The said partitions when the pipes are screwed in place coincide with the partitions 19 as shown in Fig. 2, so that water forced into one of the horizontal compartments of the head I) can pass through the lower part of the opening f into the portion of the pipe 9 below the partition 9 and then, after having passed the entire length of the pipe below the partition and passed back above the partition, can enter through the other half of the same openingf to the next compartment of the head b above the one from which it entered the pipe g. Thus, if the water is forced from the pipe 6 into the lower compartment 'offlthe head I) it cannot reach the upper compartment in the said head and be delivered to the pipe 6 until after having passed back and forth through the entire length of the pipes of each tier of pipes g, and having thus been thoroughly exposed to the heat of steam in the case a outside the said pipes, the direction of its circulation being clearly shown by the arrows, Fig. 2.

The opposite head or bonnet c of the case a is provided with supports, (shown as inwardly-projecting ribs c',) for the ends of the pipes g, which are thus securelyheld at both ends and prevented from jarring or displace The exhauststeam may be taken from both sides of the exhaust-cone C, Fig. 1, which is shown in section beyond the heater A, as seen looking toward the front of the locomotive, the said heater being supported on cross-pieces or hangers B from the main side frames D of the locomotive slightly at the rear of the cylinders of the engine.

' The pipes m m lead from the tops of the cones and receive steam from the two cylinders alternately, and preferably unite at an acute angle, as indicated in Fig. 5,in a single piece n, leading into the side of the case a, as By this arrangement the.

shown in Fig. 3. exhaust-steam forced into either of the pipes 17?. 07?. will, on its arrival at their j unction with the pipe 17., tend, by its velocity, to continue on through the pipe it into the case a, instead of passing back in the other pipe toward the exhaust-cone.

A baffie-plate or deflector r is preferably placed opposite the mouth of the exhauststeam-inlet pipe m, as shown in Fig. 4, to insure a more uniform distribution of the steam throughout the interior of the case. The case a is provided with an outlet p for the escape of water of condensation.

The exhaustcone C may be provided with a laterally-adjustable piece 0', Figs. 4 and 5, opposite the mouths of the pipes m m, by means of which adj ustingpiece the size of the orifice of the exhaust-cone may be varied so as to produce the desired velocity of the exhaust-steam for forcing a portion of the same into the heater-case and causing the remainder to perform its usual function of stimulating the draft.

I claim 1. The combination, with the flanged cas- 3. The case having a head I), provided with I a series of horizontal partitions forming separate compartments, and head 0, combinedwith a series of pipes closed at one end and having their opening opposite end connected with the head I), and communicating with two of the compartments therein, the said pipes being provided with partitions coinciding with those of the head 19, extending to within a short distance of the closed ends of the pipes, substantially as described.

4. The combination of the exhaust-cone of the locomotive and pipes at m, leading therefrom, with an adjustable piece governing the orifice of the exhaust-cone, and a feed-water heater consisting of exhaust connected with said i es m m" and a series of water-circulating pipes in the said case, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWVARD GOSS. Witnesses:

J. L. BACON, F. G. CARTER.

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