US121079A - Improvement in steam-generators - Google Patents
Improvement in steam-generators Download PDFInfo
- Publication number
- US121079A US121079A US121079DA US121079A US 121079 A US121079 A US 121079A US 121079D A US121079D A US 121079DA US 121079 A US121079 A US 121079A
- Authority
- US
- United States
- Prior art keywords
- water
- steam
- reservoir
- coils
- generators
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 52
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 240000008669 Hedera helix Species 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/205—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes
Definitions
- A is a steam and water reservoir, which may be cylindrical or of other shape, and of any suitable metal.
- B B are tubes inwhich steam is generated. These tubes are preferably coiled in a cylindrical form, but any desired shape may be used. Any number of these coils may be employed in connection with the reservoir. The coils are connected with the reservoir by their exit-pipes O (l and by their inlet-pipes D D. E E is the water-line in the reservoir.
- the vital principle of my invention is realized through the connection of the exit-pipes with the reservoir at or near the water-line, instead of above or below that line. If the connection is made below the water surface the weight of water above said connection obstructs the circulation through the coils. If the connection be made above the water-line, or so far above that the heated water in the coils does not naturally and freely rise to the height of said connection, the generated steam only passes through the exitpipes into the reservoir, leaving the water behind in the coils, and thus destroying all circulation of the water in the generator.
- the steam-generator B composed of a series or coil of tubes, connected with the steam and water reservoir A, the outlets C O of said generator entering said reservoir near its Water-level, substantially as and for the purpose set forth.
Description
2 Sheets Shee'tL Patenied Nov. 21,1871.
3-511252.4H"H%WHMiirifiaisi,izii v m A. D. B R O C K.
AM PHOTOLITHOERAFHIL ca IVY/OSBORNE? PROCESS.)
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Improvement in Steam Generators.
Wzmesses.
UNITED STATES FFICE.
PATENT IMPROVEMENT IN STEAM-GENERATORS.
Specification forming part of Letters Patent No. 121,079, dated November 21, 1871.
To all whom it may concern:
Be it known that I, ALVAN D. BROOK, of the city of Washington, District of Columbia, have made a new and useful Improvement in Tubulous Steam-Generators; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which the two figures represent front elevations of two forms of my invention, parts being broken away to show the construction.
In the drawings, A is a steam and water reservoir, which may be cylindrical or of other shape, and of any suitable metal. B B are tubes inwhich steam is generated. These tubes are preferably coiled in a cylindrical form, but any desired shape may be used. Any number of these coils may be employed in connection with the reservoir. The coils are connected with the reservoir by their exit-pipes O (l and by their inlet-pipes D D. E E is the water-line in the reservoir.
Having shown the construction of my generator, I will now describe its mode of operation.
Water being introduced into the reservoir, it enters the coils by the inlet-pipes D D? and rises in them to the water-line E E. On the application of heat to the generator the water in the coils expands, and, as the specific gravity of water in the coils is less than that in the reservoir, this expansion must be in the direction of the exitpipes O G, causing a rush of water through them into the reservoir at the water-line E E. The space in the coils thus made vacant is at once occupied by a fresh supply of water from the bottom of the reservoir, to be in its turn subjected to the same process. As the temperature isincreased the circulation of the water in the coils is correspondingly accelerated. At 212 Fahrenheit steam is generated in the coils, which, obeying the same law, passes on, mingled with the heated water, through the exit-pipes into the reservoir. The steam thus generated and delivered into the reservoir, being of a less specific gravity than the water, rises and fills the space above the waterline. A rapid circulation in the generator, as well as a rapid circulation of steam, is by this process effected.
The vital principle of my invention is realized through the connection of the exit-pipes with the reservoir at or near the water-line, instead of above or below that line. If the connection is made below the water surface the weight of water above said connection obstructs the circulation through the coils. If the connection be made above the water-line, or so far above that the heated water in the coils does not naturally and freely rise to the height of said connection, the generated steam only passes through the exitpipes into the reservoir, leaving the water behind in the coils, and thus destroying all circulation of the water in the generator.
All experience touching this subject goes to show that a rapid circulation in generators is absolutely essential to a rapid generation of steam. This explains the success of my generator, in which a rapid circulation of both water and steam is efiected by means of connecting the exit-pipe or pipes with the reservoir at or near the water level in the same By this means, also, I over- .come the difficulties which the inventors of tubulous steam-generators have hitherto encountered: First, unless there is a rapid circulation of water and steam through the coils the sediment which naturally gathers in the coils remains there, and soon destroys the effectiveness of the generator. Second, unless there is a continuous flow of water flom the bottom of the reservoir into the coils, (which water, being of a lower temperature, tends constantly to diminish the intensity of the heat,) the coils become overheated, and soon burn out. Third, unless there is a continuous fresh supply of water in the coils, not only is the water in the coils soon generated into steam, exposing the pipes to intense heat, but this intense heat, together with the back pressure of the steam, effectually expels and prevents all fresh supply of water from the reservoir, and destruction to the entire apparatus from exposure or burning out is the consequence.
It will be understood from the foregoing that the peculiarity and, advantage of my invention relates exclusively to the particular point or height at which I connect the exit-pipe or pipes with the reservoir. That point or height is determined by the water-level in the reservoir. The water-line is rendered constant, or nearly so, by gauging the supply of water to the reservoir. The best result will always be obtained when the water-line is at the point of connection, but in practice the water-line may slightly vary 3 hence rator is attached to the reservoir, and I do not claim that arrangement; but
I claim- The steam-generator B, composed of a series or coil of tubes, connected with the steam and water reservoir A, the outlets C O of said generator entering said reservoir near its Water-level, substantially as and for the purpose set forth.
Witnesses: A. D. BROOK.
EDWARD N. BEAL, W. A. BARTLETT. (148)
Publications (1)
Publication Number | Publication Date |
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US121079A true US121079A (en) | 1871-11-21 |
Family
ID=2190523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US121079D Expired - Lifetime US121079A (en) | Improvement in steam-generators |
Country Status (1)
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US (1) | US121079A (en) |
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- US US121079D patent/US121079A/en not_active Expired - Lifetime
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