US3672336A - Heat generator of the smoke-tube type - Google Patents

Heat generator of the smoke-tube type Download PDF

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Publication number
US3672336A
US3672336A US40655A US3672336DA US3672336A US 3672336 A US3672336 A US 3672336A US 40655 A US40655 A US 40655A US 3672336D A US3672336D A US 3672336DA US 3672336 A US3672336 A US 3672336A
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US
United States
Prior art keywords
combustion chamber
exhaust passages
smoke
furnace
combustion
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.)
Expired - Lifetime
Application number
US40655A
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English (en)
Inventor
Giuseppe Joannes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GRUPPO FINANZIARIO TERMICO FIN
Original Assignee
GRUPPO FINANZIARIO TERMICO FIN
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Publication date
Application filed by GRUPPO FINANZIARIO TERMICO FIN filed Critical GRUPPO FINANZIARIO TERMICO FIN
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Publication of US3672336A publication Critical patent/US3672336A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
    • F24H1/285—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber

Definitions

  • a heat generator of the smoke-tube type which includes a furnace and a plurality of smoke tubes. Both the furnace and the tubes are made of a single metal sheet which is folded. The tubes are arranged circularly around the furnace or a part of the furnace. The shape of the tubes is such that there is communication between the tubes and the furnace for reversing the flow of the smoke.
  • the tubes are of a constant or of a variable cross section.
  • Another object of the invention is to provide a heat generator of the above type that is usable with minor changes for any kind of liquid, solid or gaseous fuel and for use either for normal combustion or combustion under pressure.
  • the main feature of the heat generator of the present invention consists in the fact that the furnace and the smoke tubes are made from a single metal sheet so folded in the longitudinal direction as to define both the combustion chamber or the furnace and the smoke'tub'es circularly disposed around the furnace.
  • the portions of the sheet which form the smoke tubes are so deformed at one end as to obtain communication between the furnace and such tubes in order to reverse the flow of the smoke.
  • FIG. I is a front view diagram of a unit comprising a furnace and a plurality of smoke tubes which are parts of a heat generator according to the invention
  • FIGS. 2 and 3 show two variations of the embodiment of FIG. 1;
  • FIG. 4 is an axial section along the line IV-IV of FIG. 1;
  • FIG. 5 is a front view of a unit analogous with that of FIG. I, in which there are radial connections between the furnace and the smoke tubes;
  • FIG. 6 is an axial section along line VI-VI of FIG. 5;
  • FIG. 7 is a detail on enlarged scale of a generator of the type illustrated in FIG. 1, made according to a variation of said figure;
  • FIG. 8 is a side view of the detail shown by FIG. 7, and
  • FIGS. 9 and 10 are two diagrammatical sections of two different types of heat generator which use the units illustrated in the preceding figures.
  • Such unit is obtained by folding the sheet 1, 1a, lb so as to make a number of flat strips which together define a furnace and a number of tubes 3, 3a, 3b of some or other shape separated from the furnace by means of longitudinal necks 4, 4a, 4b.
  • the tubes can be arranged in any pattern on the whole circumference of the furnace or on a part thereof and can be of any shape, as shown by FIGS. 1, 2 and 3. Also the furnace can be of any geometrical cross section.
  • the outer tubes 3 have their end parts 5 deformed each into a funnel so as to provide communication in radial direction of chamber A of the furnace with cavity B of the smoke tubes.
  • smoke tubes 3' can also be tapered, i.e., can have a varying cross section, as shown in FIGS.. 7 and 8, which can be called for by special design requirements.
  • FIGS. 9-and 10 illustrate by way of example two possible embodiments of heat generators, which incorporate a unit of a furnace and smoke tubes, obtained according to the invention.
  • burner 6 is arranged at the top and the furnace is closed at the bottom by a refractory base cover 7, the smoke rising along the inner walls of the furnace, penetrating the smoke tubes B to escape at the bottom, as shown by arrows C.
  • burner 6 is located at the top and the smoke, going through passageways 5 arranged at the bottom, rises along the smoke tubes B to escape at the top, as shown by arrows C.
  • the burner can be so arranged that the axis of the flame ray may form with the axis of the furnace an angle of any inclination.
  • I claim 1 In a boiler assembly having an outer jacket and an inner jacket forming a conduit for a fluid to be heated, a combustion chamber located within the inner jacket and a series of exhaust passages for combustion products, each passage extending along the side of the combustion chamber and communicating with it at one of its ends, the improvement comprising a single sheet of metal folded to form the inner jacket, combustion chamber and exhaust passages of the boiler assembly, the combustion chamber having a substantially cylindrical shape with the exhaust passages spaced at intervals around the external periphery of the combustion chamber to form corrugations on the outer surface, the corrugated outer surface forming the inner jacket whereby a one piece unit is provided for a boiler assembly.
  • the exhaust passages being flared radially inward from the periphery of the combustion chamber at one end thereof to provide a fluid communication between the exhaust passages and the combustion chamber.
  • combustion chamber inner surface being substantially formed of a series of contiguous flat surfaces and the exhaust passages having a substantially triangular configuration.
  • a method of assembling a boiler for heating liquids with hot gases of combustion comprising the steps of providing a single sheet of metal; bending the sheet of metal to fonn a substantially cylindrical combustion chamber and integral serting the bent sheet of metal into an outer housing so that its outer cylindrical surface forms an inner surface of a passageway for liquids to be heated, the passageway being peripheral exhaust passages for conveying the by-products of 5 defined between the outer housmg and the Surface combustion from the cylindrical combustion chamber; and in- I i l I

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
US40655A 1969-05-26 1970-05-26 Heat generator of the smoke-tube type Expired - Lifetime US3672336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5199869 1969-05-26

Publications (1)

Publication Number Publication Date
US3672336A true US3672336A (en) 1972-06-27

Family

ID=11276172

Family Applications (1)

Application Number Title Priority Date Filing Date
US40655A Expired - Lifetime US3672336A (en) 1969-05-26 1970-05-26 Heat generator of the smoke-tube type

Country Status (7)

Country Link
US (1) US3672336A (fr)
CH (1) CH507477A (fr)
DK (1) DK122477B (fr)
ES (1) ES380869A1 (fr)
FR (1) FR2048751A5 (fr)
NL (1) NL7007578A (fr)
SE (1) SE361734B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157698A (en) * 1976-10-09 1979-06-12 Hans Viessmann Water heating boiler
US4637371A (en) * 1983-11-17 1987-01-20 Webasto-Werk W. Baier Gmbh & Co. Fuel-operated heating system, particularly an auxiliary heater for a vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157698A (en) * 1976-10-09 1979-06-12 Hans Viessmann Water heating boiler
US4637371A (en) * 1983-11-17 1987-01-20 Webasto-Werk W. Baier Gmbh & Co. Fuel-operated heating system, particularly an auxiliary heater for a vehicle

Also Published As

Publication number Publication date
SE361734B (fr) 1973-11-12
DK122477B (da) 1972-03-06
DE2025472B2 (de) 1977-04-07
ES380869A1 (es) 1972-09-16
CH507477A (it) 1971-05-15
NL7007578A (fr) 1970-11-30
FR2048751A5 (fr) 1971-03-19
DE2025472A1 (de) 1971-05-06

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