US759523A

US759523A - Steam-boiler.

Info

Publication number: US759523A
Application number: US15968903A
Authority: US
Inventors: Archie G Hohenstein
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-06-01
Filing date: 1903-06-01
Publication date: 1904-05-10
Anticipated expiration: 1921-05-10

Description

No. 759,523. PATBNTED MAY 10, 1904. A. G. HOHENSTEIN. STEAM BOILER.

APPLICATION IILED JUNE 1. 1903. R0 MODEL. 3 SHEETS-SHEET 1.

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- A. G. HOHENSTEIN.

STEAM BOILER. APPLICATION IILBD JUNE 1. 1903.

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PATEN TED MAY 10, 1904,

A. G. HOHENSTEIN.

STEAM BOILER.

APPLICATION rum) JUNE 1. 1903.

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" UNITED STATES Patented May 10, 1904.

PATENT OFFICE.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 759,523, dated May 10, 1904,

Application filed June 1, 1903. Serial No. 159,689. (No model.)

To (LU 11/72/0111, it"ntcty concern:

Be it known thatI, ARCHIE GERRY I-Iouum s'rEIN, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented or discovered certain new and useful Improvements in Steam-Boilers, of which improvements the following is a specification.

The' invention described herein relates to certain improvements in water-tube boilers, the invention being more especially directed to a construction whereby the boiler is adapted for the use of liquid fuel, as oil.

Generally stated, the invention consists in the provision within the lire-box of suitable combustion-chambers or arches formed of refractory material in which the combustion of the oil occurs, the walls of the fire-box being formed in part by heatin '-surfaces, the arches being designed to prevent direct impingement of the hottest flames with the water-cooled tubes until complete combustion occurs.

The invention is hereinafter more fully described and claimed.

In the accompanying d awings, forming a part of this specification, Figure l is a front elevation of my improved boiler, a portion of the casing being removed. Fig. 2 is a transverse sectional elevation of the same; and Fig. 3 is a rear elevation, a portion of. the back casing being removed.

h In the practice of my invention the headers 1 are extended down to a point below that at which the oil is introduced and are connected at their lower ends to a distributing or equalizing box tube. The headers may be formed in two vertical sections, as shown and described in application Serial No. 159,684, filed June 1, 1903, or divided transversely by a par tition 1. The lower water-chambers or headers are connected to the front ends of a series of tubes 5, extending rearwardly and connect ed to junction-boxes 6. The rear ends of two series of tubes 7 and 8 are also connected to these junction-boxes and to the upper waterchambers or portions of the headers, as described and shown in application Serial No. 159,684, filed June 1, 1903. This arrangement of the series of

tubes

5, 7, and 8 may be re versed, as shown 1n the application referred to.- The upper ends of the headers are connected by a series of tubes 11 with the drum 12, which is also connected to the upper ends of the downtakes 13. These downtakes extend downwardly below the fire-chamber and may be either nippled together to equalize circulation, as shown in Fig. 3, or connected to an equalizing box or drum, as shownand described in application Serial No. 159,685,1iled J unc 1, 1903. 'Each of the downtalres is connected by a tube 9 with the equalizing box or.

chamber 39 at the front of the furnace, said tubes passing below the fire-chamber and forming a water-floor therefor. The outer or end downtakes are connected by a series of tubes 20 with the outer or end headers and are so arranged and connected to the headers and downtakes as to form water-walls at the sides of the boiler. formed ofrefractory material, are arranged in a space between the

tubes

5 and 9, forming a series of combustion-ehambers, said arches resting upon blocks I9, hereinafter described, or, if preferred, directly upon the tubes.

As clearly shown in Figs. 1 and 3, the lower ends of the headers are drawn in or flattened, so as to form spaces a through which can be inserted the burners 50, which project through the front casing. In case the burners are not inserted through all the spaces between the lower-ends of the headers such unoccupied space can be covered by .pieccs of mica, so as to permit the 'liremen to inspect the flame within the fire-chamber.

The entrance of air between the tubes 9,

forming the water-floor, is prevented by. a

plate 51, which extends from the front of the furnace to a point near the downtakes, and the open space thus formed is adapted to be closed by a hinged section 52 of the fiooru A series of arches 18,

crease the heating-surfaces of these blocks. As the air flows up through the opening adjacent to the downtakes it will flow forward along the passages in the blocks and the upper surfaces of the tubes 9, being highly heated both by the tubes and the blocks which are heated by the flame in the combustion-chambers.

It will be observed that in the construction shown the equalizing-box and the water-floors are arranged a considerable distance above the floor of the fire-room, so that there willbe a free flow of air therethrough, keeping such floor cool, thereby permitting of the storage of the liquid fuel immediately below the boiler. In order to prevent the downtakes from being injured by the direct impingement of the hot flames from the combustion-chambers, their lower portions are covered by refractory material, and the space between the downtakes and the junction-boxes is closed by a supporting-wall 54:, also a form of refractory material.

It is characteristic of my improved boiler that the sides, ends, and bottom of the firebox are formed by Water-walls, the headers forming the front wall, the tubes forming the side walls, the downtakes forming the rear Wall, while the bottom of the fire box is formed by the tubes 9. The refractory arches are employed for insuring complete vaporization and ignition of the gases before they come into contact with water-cooled surfaces, thus preventing the formation of carbon.-

It will be observed that the headers, downtakes, side water-wall, and the water-floor form portions of the complete loop circulation characteristic of my improved type of boiler.

I claim herein as my invention- 1. A water-tube boiler having in combination a lower series of water-chambers forming the front wall of the fire-box, an upper series of water-chambers, connected series of tubes extending from said chambers, and return connections from the upper to the lower series of water-chambers, substantially as set forth.

2. A water-tube boiler having in combination a lower series of water-chambers forming the front wall of the fire-box, an upper series of water-chambers, connected series of tubes extending from said chambers, tubes extending from the lower water-chambers and forming the bottom of the fire-box, and connections from the upper series of water-chambers to said tubes, substantially as set forth.

3. A water-tube boiler having in combination headers arranged to form the front of the fire-box, three connected series of tubes extending from the headers, tubes extending from the upper portions of the headers, downtakes having their upper ends connected to said tubes, and tubes extending forwardly from the downtakes and connected to the headers, and forming a floor for the fire-box, substantially as set forth.

4:. A water-tube boiler having in combination headers arranged to form the front of the fire-box, three connected series of tubes extending from the headers, a drum connected to the upper portions of the headers, downtakes extending from the drum, and tubes extending from the downtakes and connected to the headers and forming a water-floor for the fire-box, substantially as set forth.

5. A water-tube boiler having in combination a distributing or equalizing box, headers connected to said box and forming the front of the fire-box, three connected series of tubes extending from the headers, a drum connected to the headers, downtakes, tubes extending from the downtakes to the equalizing-box and forming a water-floor for the fire-box, and tubes extending from the end downtakes to end headers and forming water-walls for the fire-box, substantially as set forth.

6. A water-tube boiler having a loop circulation having in combination therewith waterwalls forming the sides, ends and floor of the fire-box and forming parts of the circulating system of the boiler, substantially as set forth.

7 A water-tube boiler having in combination therewith water-walls forming the sides, ends and floor of the fire-box and forming parts of the circulating system of the boiler, substantially as set forth.

8. A water-tube boiler having in combina tion therewith a water-floor for the fire-box and a series of arches or combustion-chambers supported by said floor, substantially as set forth.

9. A water-tube boiler having in combination therewith a water-floor formed of a series of tubes included in the circulating system of the boiler, metal blocks having grooved under surfaces resting on said tubes and arches or combustion chambers supported by said blocks, substantially as set forth.

In testimony whereof I have hereunto set my hand.

ARCHIE G. HOHENSTEIN.

Witnesses:

DARWIN S. VVOLCOTT, J. C. DAvrDsoN.