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EP0205993A2 - Chauffe-eau chauffé par combustibles solides ayant une marche de flamme inversée pour une installation de chauffage central et en général pour une installation d'eau chaude - Google Patents

Chauffe-eau chauffé par combustibles solides ayant une marche de flamme inversée pour une installation de chauffage central et en général pour une installation d'eau chaude Download PDF

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Publication number
EP0205993A2
EP0205993A2 EP86107403A EP86107403A EP0205993A2 EP 0205993 A2 EP0205993 A2 EP 0205993A2 EP 86107403 A EP86107403 A EP 86107403A EP 86107403 A EP86107403 A EP 86107403A EP 0205993 A2 EP0205993 A2 EP 0205993A2
Authority
EP
European Patent Office
Prior art keywords
boiler
enclosure
fuel
chamber
combustion chamber
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.)
Withdrawn
Application number
EP86107403A
Other languages
German (de)
English (en)
Other versions
EP0205993A3 (fr
Inventor
Sauro Mescoli
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.)
MESCOLI - TECNOLOGIE SOLARI - SNC DI MESCOLI SAURO e GIANNI
Original Assignee
MESCOLI - TECNOLOGIE SOLARI - SNC DI MESCOLI SAURO e GIANNI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MESCOLI - TECNOLOGIE SOLARI - SNC DI MESCOLI SAURO e GIANNI filed Critical MESCOLI - TECNOLOGIE SOLARI - SNC DI MESCOLI SAURO e GIANNI
Publication of EP0205993A2 publication Critical patent/EP0205993A2/fr
Publication of EP0205993A3 publication Critical patent/EP0205993A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B7/00—Combustion techniques; Other solid-fuel combustion apparatus
    • F23B7/002—Combustion techniques; Other solid-fuel combustion apparatus characterised by gas flow arrangements
    • F23B7/005—Combustion techniques; Other solid-fuel combustion apparatus characterised by gas flow arrangements with downdraught through fuel bed and grate
    • 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
    • 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
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • the invention relates to a solid fuel fired boiler of the inverted flame type used in central heating and hot water systems, that is, a wood-fired unit for heating water used in central heating, domestic or otherwise, and for the production of hot water for domestic and industrial use in general, in which the flame is directed downwards.
  • the prior art embraces wood or coal fired boilers in which solid fuel is reduced to gas inside a chamber surrounded by a jacket containing the water to be heated. The fuel rests on a grate fashioned in steel and/or refractory material, which is fixed to the walls of the boiler and communicates with the inverted flame combustion chamber below; such a grate is not cooled.
  • Boilers of the type are beset by drawbacks originating from tar-laden condensation that forms on the internal jacket walls, which on the one side are in contact with water, still unheated, and on the other with gas, at high temperature immediately following distillation. Such condensation ultimately produces corrosion, with the result that the jacket metal is eaten through and the boiler put out of action.
  • a further drawback in boilers of the type is that the grate overheats, and one has early wear of the steel structure, and of the refractory if any.
  • a boiler design according to the invention which consists predominantly in a solid fuel enclosure that is encompassed by baffles composed of a vertical L-sections arranged side by side and welded together in such a way that one member of the L profile forms an integral part of the internal wall of a substantially parallelpiped three-sided enclosure, and the radially disposed member connects with a surrounding sheet that constitutes the inner wall of the water jacket, the remaining outer wall of which takes the form of a further sheet separated from the outer panelling of the boiler by lagging.
  • the L-section members and the sheet constituting the inner wall of the water jacket combine to create passages through which gas from the cobmustion chamber, located beneath the fuel enclosure, can be channelled upward, and then into the flue by way of manifolds if appropriate.
  • the lower end of the fuel enclosure is flared, widening toward bottom in order to facilitate descent of the solid fuel, integral with the grate, and associated at its base with longitudinal and sub-horizontally disposed water passages that connect with the water jacket.
  • the boiler is provided further with a blower located at front, beneath the stoking hatch, which produces a primary draught directed upward and into the fuel enclosure so as to create a barrier of air immediately inside of the hatch, and a secondary draught directed downward through a valve-controlled outlet into the combustion chamber.
  • Advantages obtained with a boiler according to the invention are: elimination of tar-laden condensation from surfaces of the boiler made cool by the as yet unheated water, hence longer service life; enhanced efficiency as regards transformation of solid fuel into gas; longer burn, considering volume as par; vigorous pre-heating of primary draught; metering of secondary draught commensurate with required boiler potential and type of fuel; quick start-up, and fast response to adjustment made during burn; pre-heating of fuel; markedly longer grate life.
  • 1 denotes an enclosure in which solid fuel 2 is deposited and converted into gas, access being afforded by way of a hatch 3 located in the upper half of the front section 4 of the outer panelling of the boiler, which exhibits parallelepiped shape in the example illustrated.
  • the intermediate part of the fuel enclosure 1 is encompassed by an internal baffle composed of vertically-disposed lengths of L-section (fig 4) arranged side by side and welded together in such a way as to create three internal walls (two side and one rear) exploiting the upright member 5 of the "L" profile; the horizontal member 6 of the "L” is welded to a further intermediate wall 7 embodied in sheet metal, which constitutes the inner wall of a water jacket 8 from which hot water flows to the heating system.
  • an internal baffle composed of vertically-disposed lengths of L-section (fig 4) arranged side by side and welded together in such a way as to create three internal walls (two side and one rear) exploiting the upright member 5 of the "L" profile; the horizontal member 6 of the "L” is welded to a further intermediate wall 7 embodied in sheet metal, which constitutes the inner wall of a water jacket 8 from which hot water flows to the heating system.
  • the water jacket 8 surrounds the baffle on either side, at the lower rear, and at the topmost part of the front, and is encased by an outer sheet 9 which will be lagged with insulating material 10 located between the jacket and the outer panelling 11; the rear of the boiler need not necessarily be panelled.
  • the baffle members5 and 6 serve both to stiffen the structure, and to isolate tar-laden distillate from those walls 7 in contact with as yet unheated water, while transferring heat to the wall 7, hence to the water jacket 8.
  • the assembled L-section members provide vertical passages 6' through hich flue gas may ascend, and flow thus in the opposite direction to the descending solid fuel 2. It will be observed that the rear part of the baffle is stopped short of the top of the boiler to leave room for a chamber 12 in which flue gases are gathered and exhausted into the flue 13.
  • a damper 14 controls the outlet 15 from the fuel enclosure 1 into the gathering chamber 12, and will be opened up whenever the boiler is lit.
  • 16 denotes a pair of longitudinally disposed manifolds at the top of the side walls of the baffle (see figs 2 and 3), which connect with the gathering chamber 12, and 17 denotes the uppermost part of the enclosure 1, which is covered by the top panel 18.
  • 19 denotes the bottom end of the enclosure I, having sides 20 which are flared toward the base of the boiler and join with converging sections 21 that run into the grate 22, thereby favouring descent of the fuel 2 toward the fire bars 23, which are located at the centre of the grate, 24 denotes the combustion chamber with its downardly directed flame 25.
  • 26 denotes a pair of sub-horizontally disposed hollow members interconnecting the rear of the water jacket with a further hollow member 27 at front; the further member 27 in its turn interconnects the two sides of the jacket 8.
  • 28 denotes the ashes left following a burn, and 29 is the plinth on which the boiler stands.
  • 30 and 31 denote the cold water supply inlet, and the hot water flow outlet, respectively;
  • 32 denotes a fascia accommoadting instrumentation and controls;
  • 33 denotes a bottom hatch affording access to the combustion chamber and the ash collector; 34 denotes an inspection glass.
  • a blower unit 35 is provided for the purpose of setting up primary and secondary draughts of air by way of a chamber 36 which is controlled by a check valve 37.
  • the chamber 36 is lined with refractory material 38, admitting of preheating combustion-assisting air without causing the blower unit itself to overheat, and provided uppermost with a narrow port 39 by way of which a primary draught is channelled into the fuel enclosure I; the flow of air issuing from the port 39 creates a barrier of air immediately inside the stoking hatch 3, so as the hatch can be opened during operation without any billowing of fumes from the enclosure.
  • 40 denotes an outlet at bottom of the chamber 36, regulated by a throttle valve 41 and distanced from the hollow member 27 of the water jacket, which controls the secondary flow of air into the combustion chamber 24; air issuing from the bottom outlet 40 is similarly obliged to set up a laminar flow, thereby safeguarding the inspection glass 34.
  • 42 denotes a guard protecting the refractory 38 in the air chamber 36 from heat in the bottom end 19 of the fuel enclosure; a similar guard 43 might also be provided to protect the top front part of the water jacket 8.
  • the two flaps denoted 44 (fig 2) serve to vent the fuel enclosure to the gathering chamber 12, thereby preventing the risk of explosion.
  • the flue gas passages 6 1 and hollow members 26 might be embodied in a different shape, the baffle could be extended uppermost to take in part of the gathering chamber 12, and extended at bottom to encompass the sides of the bottom end 19 of the fuel enclosure 1, and the passages themselves might exhibit any given cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
EP86107403A 1985-06-10 1986-05-31 Chauffe-eau chauffé par combustibles solides ayant une marche de flamme inversée pour une installation de chauffage central et en général pour une installation d'eau chaude Withdrawn EP0205993A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT40059/85A IT1187173B (it) 1985-06-10 1985-06-10 Caldaia a fiamma rovesciata a combustibile solido per riscaldamento di ambienti e produzione in genere di acqua calda
IT4005985 1985-06-10

Publications (2)

Publication Number Publication Date
EP0205993A2 true EP0205993A2 (fr) 1986-12-30
EP0205993A3 EP0205993A3 (fr) 1987-09-30

Family

ID=11247369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107403A Withdrawn EP0205993A3 (fr) 1985-06-10 1986-05-31 Chauffe-eau chauffé par combustibles solides ayant une marche de flamme inversée pour une installation de chauffage central et en général pour une installation d'eau chaude

Country Status (2)

Country Link
EP (1) EP0205993A3 (fr)
IT (1) IT1187173B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607228A1 (fr) * 1986-11-21 1988-05-27 Peyrot Pierre Chaudiere a combustible solide a haut rendement
EP0626544A1 (fr) * 1993-05-28 1994-11-30 UNICAL AG S.p.A. Générateur de chaleur avec combustion de biomasse
DE4325239A1 (de) * 1993-07-28 1995-02-02 Viessmann Werke Kg Heizkessel zum Verbrennen von Holz
EP1457741A2 (fr) 2003-03-14 2004-09-15 F.Lli Paladini S.a.s. di Paladini Maurizio & C. Poele comprenant une chaudiére por la production d'eau chaude
WO2014162159A1 (fr) * 2013-04-01 2014-10-09 Tsivikis Stavros Construction anti-goudron applicable dans des cheminées et dans tout autre type de poêles ou de chaudières brûlant des combustibles solides
KR20160010679A (ko) * 2014-07-17 2016-01-28 주식회사 대진에너지코퍼레이션 펠렛 연소용 보일러
WO2025179314A1 (fr) * 2024-02-26 2025-09-04 Martin Auer Dispositif de chauffage d'eau, agencement et procédé

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE218968C (fr) *
DE29639C (de) * F. GERECKE in Berlin. Vom 28. Fe- 1 bruar 1884 ab. j Anordnung des Rauchabzug- 1 rohres an Badeöfen, welche von oben gefeuert werden
DE430239C (de) * 1924-10-31 1926-06-12 Richard Mews Warmwasserheizungskessel
FR839477A (fr) * 1938-05-30 1939-04-04 Charbonniere Couderc Soc Foyer à charbon
FR1016208A (fr) * 1950-04-12 1952-11-05 Morvan Ets Appareils de chauffage
CH293385A (de) * 1951-06-11 1953-09-30 Rohrbach Emil Ofeneinbau.
CH392011A (de) * 1961-06-07 1965-05-15 Oil Therm Ag Heizkessel mit zusätzlichen Heizflächen
SE341060B (fr) * 1967-06-17 1971-12-13 Belleli & C S A S
DE3105099A1 (de) * 1981-02-12 1982-09-09 Kroll, Walter, 7141 Kirchberg Verbrennungsvorrichtung
EP0084852A3 (fr) * 1982-01-26 1983-09-14 UNICAL S.p.A. Chaudière en acier à combustible solide pour chauffage domestique

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607228A1 (fr) * 1986-11-21 1988-05-27 Peyrot Pierre Chaudiere a combustible solide a haut rendement
EP0626544A1 (fr) * 1993-05-28 1994-11-30 UNICAL AG S.p.A. Générateur de chaleur avec combustion de biomasse
DE4325239A1 (de) * 1993-07-28 1995-02-02 Viessmann Werke Kg Heizkessel zum Verbrennen von Holz
EP1457741A2 (fr) 2003-03-14 2004-09-15 F.Lli Paladini S.a.s. di Paladini Maurizio & C. Poele comprenant une chaudiére por la production d'eau chaude
EP1457741A3 (fr) * 2003-03-14 2006-07-05 F.Lli Paladini S.a.s. di Paladini Maurizio & C. Poele comprenant une chaudiére por la production d'eau chaude
WO2014162159A1 (fr) * 2013-04-01 2014-10-09 Tsivikis Stavros Construction anti-goudron applicable dans des cheminées et dans tout autre type de poêles ou de chaudières brûlant des combustibles solides
KR20160010679A (ko) * 2014-07-17 2016-01-28 주식회사 대진에너지코퍼레이션 펠렛 연소용 보일러
KR101636387B1 (ko) 2014-07-17 2016-07-06 주식회사 대진에너지코퍼레이션 펠렛 연소용 보일러
WO2025179314A1 (fr) * 2024-02-26 2025-09-04 Martin Auer Dispositif de chauffage d'eau, agencement et procédé

Also Published As

Publication number Publication date
IT1187173B (it) 1987-12-16
IT8540059A0 (it) 1985-06-10
EP0205993A3 (fr) 1987-09-30

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