US874731A - Steam-producer. - Google Patents

Description

PATENTED DEG. 24, 1907.

I. H. BUYER. STEAM PRODUCER.

APPLICATION FILED FEB. 5, 1906.

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No. 874,731. PATENTED DEG. 24, 1907.

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STEAM PRODUCER.

APPLIGATION FILED FEB. 5, 1906.

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No. 874,731. PATENTED DEC. 24, 1907.

I. H. BOYER.

STEAM PRODUCER.

APPLICATION FILED FEB. 6, 1906.

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ISAAC H. BOYER, OF MUNOIE, INDIANA.

STEAM-PRODUCER.

Specification of Letters Patent.

Patented Dec. 24, 1907.

Application filed February 5, 1906. Serial No. 299,487.

To all whom it may concern:

Be it known that I, ISAAC II. BOYER, a citizen of the United States, residing at Muncie, in the county of Delaware and State of Indiana, have invented new and useful Improvements in Steam-Producers and I do declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to apparatus for producing steam from water by means of heat, and has particular reference to primary heaters for heating the water by means of waste heat that unavoidably passes from the furnace to the furnace chimney; ,to evaporators whereby the hot water may be converted into steam, and to superheaters for improving the quality of the steam.

The principal object of the invention is to provide an improved steam producer of compact construction and adapted to be operated economically, whereby steam may be produced rapidly with a relatively small furnace and upon the minimum area of ground space.

The above-mentioned and minor objects are attained in the present invention, which consists in the novel construction and ar rangement of elements comprising an improved steam producer, as hereinafter particularly described and referred to in the appended claims.

Referring to the drawings, Figure 1 is a top plan view of a steam producer constructed substantially in accordance with the invention and illustrating the compact construction thereof; Fig. 2, a front eleva tion of the producer, also illustrating the compactness thereof; Fig. 3, a longitudinal vertical sectional view on the line AA in Fig. 2; Fig. 4, a transverse vertical sectional view as on the line BB in Fig. 3; Fig. 5, a side elevation partially broken away and shown in vertical section as on the line CC in Fig. 4; Fig. 6, a fragmentary horizontal sectional view as on the line D in Fig. 5 corresponding approximately to the plane of the line D-D in Fig. 7; and, Fig. 7, a fragmentary vertical sectional view, partiall in front elevation, approximately on the fine E in Fig. 3.

EilSimilar reference characters in the several figures-of the drawings designate corresponding elements or features.

In the drawings, representing a practical embodiment of the invention, a designates the front wall of a furnace structure provided with an iron front 8; a a swelled front wall having an iron front 9 inclosing a secondary heater; 1), the rear wall of the structure; a the rear or bridge wall of the furnace; d and d the side walls of the structure; a and e, partition walls in the furnace. The furnace is relatively short, measured from front to rear, but extends from one side wall to the other, and a combustion chamber is formed beyond and above the furnace by means of an inclined floor f having projections f formed by bricks on the top thereof, and a suitable number of removable arches, as it, having projections i, on the tops and projections i at the bottom thereof formed of bricks, there being grates g, and suitable furnace doors.

Fire-bricks are employed as linings as usual Where required. On the tops of the arches filling j may be provided, as indicated in Fig. 4, if required. The floor f extends from the wall a upwardly at an inclined angle to the wall I), and the arches extend from the front wall over thegrates approximately to the vertical plane of the wall 0, the partition wall partially supporting the arches and extending from the front wall to the wall 0. The arches are lowest near the front wall, and ash pockets 7c are formed above the arches adjacent to the front wall, suitable provision being made for removing the ashes and soot through the side walls.

A bar Z of channel-iron section is placed upon the wall d, and a similar bar Z is placed upon the wall d, there being rollers m on the bar Z. A main header F, the lower portion of which is for holding water and the upper portion steam, is placed upon the bar Z, and a main header F is placed on the rollers m, the header F having a blow-off connection 10 and the header F having a blow-off connection 11. The header F has a horizontal partition n dividing it into a water-chamber 12 and a main steam chamber 13 above the waterchamber. There are also vertical and horizontal partitions in the header above the partition a forming therewith relatively small steam chambers 14 separate from but inclosed in the main steam-chamber. An outlet steam connection 15 communicates with the main steam-chamber.

A suitable number of evaporators are provided, each comprising a tubular shell, as G, G G and G all attached at their ends to the inner walls of the headers F and F, there being free communication between the interiors of the shells and the interiors of the headers. The wall I) has a lateral projection b extending to one of the shells which is arran ed near the wall, the shells being relative y close to ether parallel to the front and rear walls. 1% suitable number of watertubes 10 are attached to the headers and serve to assist in supporting covers q that are placed upon the shells. The shells thus form collectively the roof of the combustion chamber above referred to. A number of stirrups are supported in each shell, the stirrups being curved concentrically to the shell and arranged near the bottom thereof whereby a water-divider of the evaporator is sup ported relatively close to the bottom of the shell. Each water-divider is composed of any suitable number of tubes of any desired diameter, as tubes H having each an upturned end 8 extending in the header F nearly to the partition n, the end having an extension I extending through said partition into a chamber 14 and having a socket 16 receiving the end, and the extension therefor providing communication between the chamber 14 and the tube H. The extension may be elevated small and become heated rapidly to high temperature, and instead of rising rapidly through the larger bulk of water in the evaporators will mostly pass up.ar0und the dividers close to the shell of the evaporator along highly heated portions thereof, while the cooler water in the middle of the evaporators will descend between the pipes of the dividers. Also the steam which may be generated will be forced into the divider tubes and become dried somewhat in the highly heated tubes.

Each evaporator is provided with a foamarrester in the upper portion of the shell composed of a number of tubes J supported on cross-bars u and having headers v and v attached to their ends, the headers being provided with stand-pipes w and w to prevent the entrance of water into the tubes, the stand-pipes extending above the water-level in the evaporator, so that steam only may enter the tubesfor heating them and consequently the surface of the water.

The foam-arresters break up foam that may arise with steam from the surface of the water, to permit ready separation of the steam from the foam, so that the foam will not be liable to pass with the steam through the steam chambers to the engine, the arrester tubes retarding the formation of large quantities of foam on the water.

The superheater comprises a series of tubes K and a series of tubes K that are attached to the headers F and F, some of the tubes communicating with the main steam chamber 13 and others of the tubes communicating with chambers 14 of the header F, so that hot steam may pass from the superheater down into and through the water-divider by way of the extensions 1. The superheater extends approximately from the plane of the front wall towards the-rear wall I) leaving a draft passage at the inner side of the rear wall. partition or baffle as is arranged upon the tubes K and is composed of bricks that extend down between the tubes K.

Joint-bars y and y are placed upon the headers F and F and are composed of I-beams, the joint-bar y having rollers m thereon. A water-head L is mounted on the joint-bar y and has a horizontal partition 2 therein dividing the water-head. into two chambers 17 and 18. A water-head L is mounted on the rollers m. A series of tubes M are connected to the water-heads L and L, and a baflie N is arranged above or on the tubes extending from the front wall to the plane of the end of the baffle 90. WValls 19 and 20 extend from the ends of the baffle 50 to the baflle N. A series of tubes 0 are connected to the water-heads L and L these tubes and the tubes M having communication with the chamber 17. A baffle P extends from the rear wall I) on some of the tubes O a suitable distance toward the front wall a leaving a draft passage around the end of the baffle. A series of tubes Q are attached also to the water-heads L and L, communicating with the chamber 18, and a roof P covers the tubes The primary heater and the superheater, as will be seen, are arranged above the evaporators in the draft passage.

A secondary heater comprises a pair of narrow headers R and R that are attached to the forward ends of the headers F and F and also to the lower portions of the waterheads L and L, the headers R and B being taller than the headers F and F, and watertubes S are connected to the pair of narrow headers. A connection T is interposed between the lower portion of the water-head L and the upper portion of the header R and has a passage 21 therein affording communication between the chamber 17 and the header R. A connection U is interposed between the lower portions of the headers A horizontal F and R, a similar connection (not shown) being arranged between the headers F and R, the connections having passages 22, 23 and 24 respectively therein provided with feed- water regulators 25, 26 and 27 respectively.

A smoke-box V is provided and is connected by ducts W, W and W with the draft passage under the roof P, and a chimney connection X is connected to the smoke-box and provided with a damper 28.

In the lower portion of the structure are one or more draft passages Y that extend through the walls 0 and I), each passage being connected by a pipe Z that is connected to the smoke-box V, there being dampers 29 and 31 in the passage Y provided with operating handles 30 and 32 respec tively, and by this means a draft may be created through the ash-pit or through the grates downwardly.

In order to supply the apparatus with water a supply-pipe connection 33 is attached to the water-head L, communicating with the chamber 18 thereof.

In practical use the heat will pass from the fire along the course indicated by feathered arrows, passing between the tubes S, under the tubes K, and between the tubes 0 and Q to the chimney connection, thus heating the water gradually after the heat has performed its part in converting the water into steam in the evaporators. The course of the water is indicated by plain darts.

The various results consequent to the particular construction described will be understood from the remarks in connection with the detailed. description, and it will be readily seen that the greatest efficiency may be attained in practice.

Having thus described the invention, what is claimed as new is 1. A steam producer including a horizontal cylindrical evaporator shell with headers connected thereto, stirrups supported in the shell and extending near the lowermost portion thereof, and a plurality of tubes arranged on the'stirrups and having their ends turned up and opening into the headers.

2. A steam producer including a horizontal cylindrical shell with headers connected thereto, stirrups supported in the shell, superheating tubes connected to one of the headers, a steam chamber connected to the superheating tubes, and a plurality of tubes arranged on the stirrups and having their ends turned upwardly, one end of each tube opening into the steam chamber and the other end opening near the uppermost portion of the evaporator shell.

3. A steam producer including a furnacewith front and rear walls and also side walls, a pair of main headers mounted on the side walls, evaporator shells attached to the headers, a secondary heater mounted on the frontwall and having communication with the main headers and provided with regulators at the communicating passages, a superheater extending above the evaporatorshells, arches and a combustion chamber floor extending collectively under the evaporator shells, a draft passage from the furnace through the rear wall, a primary heater in the draft passage above the superheater having communication with the secondary heater, and a chimney connection communicating with the draft passage.

4. A steam producer including a furnace with front and rear walls and also side walls, a pair of main headers mounted on the side walls, evaporator shells attached to the headers, a pair of narrow upright headers on the front wall attached to and extending higher than the main headers at ends thereof, tubes connected to the upright headers, feed passages provided with regulators between the upright headers and the main headers, superheating tubes connected to the main headers, a steam chamber in connection with the superheater tubes, and a primary heater mounted on the main headers and having communication with one of the narrow upright headers.

5. A steam producer including a furnace with walls, a front header and a rear header mounted on the walls, the rear header having a lower chamber and an upper chamber therein, evaporator shells connected to the front header and also with the lower chamber of the rear header, water-divider tubes supported in the evaporator shells and having upturned ends, superheating tubes connected to the front header and also with the upper chamber of the rear header, and ducts connecting upturned ends of the water divider tubes with ends I of the superheater tubes.

6. A steam producer including a horizontal evaporator shell with headers connected thereto, cross-bars supported in the shell, a plurality of tubes supported by the crossbars, horizontal headers attached to the ends of the tubes, and stand-pipes attached to the headers and extending upwardly in the upper portions of the shell.

7. A steam producer including a furnace with walls, a front header and arear header superheater tubes connected to the front header and also with the separate chambers of the main upper chamber of the rear header.

8. A steam producer including a furnace with front and rear walls and also side walls, a pair of main headers mounted on the side walls, a pair of narrow upright heater headers each connected to an end of a main header at the front wall, feed passages between the upright headers and the main headers, evaporator shells attached to the main headers, and water-heating tubes connecting the upright heater headers together, the tubes being arranged parallel to the evaporator shells.

9. A steam producer including a furnace, a front header, a rear header having a lower chamber and also a main steam chamber therein, a plurality of evaporator shells connected to the front header and also with the lower chamber of the rear header, a plurality of water-tubes connected to the two headers adjacent to the shells, coverings on the shells supported partially by the water-tubes, superheater tubes connected to the front header and also with the steam chamber of the rear header, a baffle composed of bricks extending over and also between the superheater tubes, and a draft passage extending from the furnace under and over the evaporator shells and under and over the superheater tubes.

In testimony whereof, I afliX my signature in presence of two witnesses.

ISAAC H. BOYER.

Witnesses:

WM. 0. THOMPSON, E. T. SrLvIUs.

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