US449150A - Steam and hot-water generator - Google Patents

Description

(No Model D. A. DICKINSON.v STEAM AND HOT WATER GENERATOR.

No. 449,150. Patented Mar. 31, 1891.

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ATENT DANIEL A. DICKINSON, OF ST. PAUL, MINNESOTA.

STEAM AND HOT-WATER GENERATOR.

SPECIFICATION forming part of Letters Patent No. 449,150, dated March 31, 1891. Application filed August '7, 1890. Serial No. 361,384. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL A. DICKINSON, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Steam and Hotater Generators, of which the following is a specification.

This invention relates to sectional steam and hot-water generators; and it consists in the manner of constructing the independent generating-chamber, whereby a more uniform and free meansof circulation is provided, and a water-jacket formed around the sections, as hereinafter shown and described, and specifically pointed out in the claims.

In the drawings, Figure l is a semi-sectional side elevation. Fig. 2 is a plan view of the sectional generating-chamber with the dome and jacket removed. Figs. 3 and 4: are perspective views of one of the combined gencrating-chambers and water-jackets detached. Fig. 5 is an enlarged sectional view through one side of the series of generating-chambers and water-jackets, illustrating more fully the manner of constructing and connecting them, and showing the arrangement of the partitions when the apparatus is employed as a hotwater heater.

The generator is built up of independent hollow sections A B, the sections A formed of a less diameter than the sections B, and the latter provided with hollow downwardly-projecting outer sides Bi'forming, when the sections are connected by the branch pipes D, a water-jacket or wall to the generator. Each section isshown formed in two parts, and may be temporarily united by bolts or rivets or in any other suitable manner.

lVhile I have shown the sections formed in two parts, I do not wish to be limited to any precise number, as a greater number may be employed, or each section may be constructed in one piece, as preferred.

The sections B are formed with .central openings E for the passage of the smoke and other products of the combustion, which thus pass in Zigzag lines through and around the sections, as indicated by the arrows. The lower edge of the lowermost jacket-section B rests above an annular plate F, supported by a rim a on the fire-pot G, but does not quitetouch it, while the lowermost edge of the jacket-sections B D of the upper section B rests above but does not quite touch the upper surface of the lowermost of the jacketsections 13 The upper surface of both the lowermost of the sections B and also the ring F are formed with ribs b, rising just inside the water-jacket sections, as shown, to assist in holding the cement, which is placed between the adjacent portions of the sections. By this simple construction the sections A B are surrounded by a hollow wall B through which the hot water freely circulates, thereby accomplishing two very important resultsviz., utilizing the heat radiating from the generator by absorbing it into the water flowing through the jacket-sections and transmitting it therefrom back again into the interior of the sections, and also preventing the heat being absorbed into the surrounding atmosphere. If found necessary, a casing of asbestus or other non-heating material may be placed around the sections B as a further protection.

As before stated, the sections A B are united by branches D, and within each of the branches is a curved cross-partition E,which extends backward into and ac oss the interior of the sections Band drop-sections B as shown at d, so that the water in circulating throughout the sections is caused thereby to flow downward into the jacket-sections and insures the complete and perfect circulating throughout every portion of the system. The partitions E thus divide each of the connecting branches into two compartments, as in Patent No. 431,037, July 1, 1890. The greatest heat being near the centers of the sections A and B, the water is caused to flow upward through the inner series of compartments formed in the branches D, connecting the sections by the partition E. This upward flow, increasing in volume at each section, contributes its quota of water, and to provide for this increasing volume of upwardly-flowing water the partition in the connecting branches of each section is set farther outward than the partition in the section immediately below it, so that the inner compartments are increased in size from the lowermost toward the uppermost, as shown. The rcturnilow, when the boiler is used for hot-water heating, passes upward from the firepot through the outer series of compa tments in the branches connecting the sections, and each section draws its supply of return-water therefrom. The volume of the return-flow being greater at the bottom and diminishing as each section is supplied, the arrangement of the partitions above indicated economizes the space contained in the connecting branches, allowing both the outilowing heated water and the return-flow of colder water the lz-trgest space at those points in both series of compartments where the volume of the warmest water is the greatest, thus facilitating the circulation.

The jacket scctions will be provided with drainage plugs or pipes at suitable points in their lower parts, as indicated at e.

\Vhen the apparatus is employed for generating hotwater, the dome II will not be required, as the outflow-pipes K can be connected directly to the uppermost branch D, and the upper end of the partition E in the uppermost section 13 turned off at right anglcs and united to the body of the section, as shown at g in Fig. 5, closing the outer series of compartments at the top. \Vhen used for the generation of steam, the uppermost partition IE will be continued upward into the dome ll, as shown at min Fig. 1, and inclined upward beneath the outflow-pipes K, so that any water of condensation ilowing back through the piping will fall upon the outer surfaces of or outside this inclined partition lit and be carried down in the outer series of compartments formed by the partition E and not come in contact with the upwardly-flowing and more highlyheated and stcanrbearing currents. By this simple means the colder water of condensation is conducted directly into the colder downwardly-flowing currents and is prevented from mingling with the upward-flowing hotter currents, thus facilitating the circulation and avoiding the necessary cooling of the steanrbcaring currents of water as it comes into the stcanrdome from the heating-sections.

llaving thus described my inventiomwhat I claim as new is- 1. In a steam or hot-water generator, a series of hollow horizontal disks formed of separate segmental sections 13, with central openings E, and a series of horizontal hollow d isks formed of separate segmental sections A and of smaller diameter than said sectional disks B, said series of sectionaldisks A being arranged alternately with said sections B and united by branches D, in combination with hollow upright sections B formed integral with said sections B and projecting between them and outside of the said sections A, whereby a hollow water jacket or wall is formed around the sections, substantially as and for the purpose set forth.

2. In a steam or hot-water generator, a serics of hollow alternating sections A13, united by branches I), each of said sections B having hollow extensions B integral therewith, and partitions E within said branches and extending into the interior of said sections B, and also into said extensions B whereby the circulation of the water therein insu red, substantially as and for the purpose set forth.

3. In a steam or hot-water generator, a series of alternating sections A13, united by branches D, and with a partition E in each branch and formingits interior into two scpa rate compartments, said partition being placed farther outward within the branches from the lowermost toward the uppermost section, so as to increase the area of the inner compartment in each branch upward, and correspondingly increase the area of the outer compartments downward, whereby means are provided for the free passage of the volume of the flowing currents, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses, this 30th day of July, 1890.

. DANIEL A. DICKINSON.

\Vitnesses:

O. N. Woonwann, It. Wnnsrnn.

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