[go: up one dir, main page]

EP1734303B1 - Chaudière à combustible granulé à haute récupération d'énergie - Google Patents

Chaudière à combustible granulé à haute récupération d'énergie Download PDF

Info

Publication number
EP1734303B1
EP1734303B1 EP06114199.0A EP06114199A EP1734303B1 EP 1734303 B1 EP1734303 B1 EP 1734303B1 EP 06114199 A EP06114199 A EP 06114199A EP 1734303 B1 EP1734303 B1 EP 1734303B1
Authority
EP
European Patent Office
Prior art keywords
combustion
combustion chamber
wall
plate
boiler
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.)
Not-in-force
Application number
EP06114199.0A
Other languages
German (de)
English (en)
Other versions
EP1734303A2 (fr
EP1734303A3 (fr
Inventor
Mario Acquaro
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.)
FAMAR ITL (Innovation Technology Lab) Srl
Original Assignee
FAMAR ITL (Innovation Technology Lab) Srl
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 FAMAR ITL (Innovation Technology Lab) Srl filed Critical FAMAR ITL (Innovation Technology Lab) Srl
Publication of EP1734303A2 publication Critical patent/EP1734303A2/fr
Publication of EP1734303A3 publication Critical patent/EP1734303A3/fr
Application granted granted Critical
Publication of EP1734303B1 publication Critical patent/EP1734303B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F23B40/06—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface
    • F23B40/08—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface into pot- or trough-shaped grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/12—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel being fed to the combustion zone by free fall or by sliding along inclined surfaces, e.g. from a conveyor terminating above the fuel bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/024—Closed stoves for pulverulent fuels
    • 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
    • F24H6/00—Combined water and air heaters
    • 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 present invention relates to a boiler which is fed with elements obtained by compression of combustion-supporting material, also known as pellets, characterized by high energy recovery.
  • pellets allows to limit the problems that occur when using ordinary firewood as solid fuel, such as the large volume occupied by the wood and the need to add frequently by hand new pieces of wood in order to feed the fire.
  • pellets are usually composed of pressed wood, with respect to ordinary firewood they have smaller volumes for an equal heating value, and the addition of new pellets to feed the fire, thanks to their limited dimensions, is fit for automation, therefore no longer requiring frequent intervention by an operator.
  • Stoves are in use which use pellets and usually comprise a hopper from which they are introduced periodically and automatically, for example by means of one or more screw feeders driven by electric motors, into a burner in which they burn.
  • boilers are also known in which the heat of the combustion chamber is transferred outside said chamber by means of a heat transfer medium, typically constituted by water, which is made to flow adjacent to the combustion chamber so as to come into contact with the hot parts thereof, becoming warm; the heat transfer medium is then sent to the heating system.
  • a heat transfer medium typically constituted by water
  • burners which partially recover the heat contained in the combustion gases; these known types of pellet boiler are present in two types, termed respectively fire tube and water tube.
  • fire tube boilers In so-called fire tube boilers, the gases generated in the combustion of the pellets, before entering the flue from which they are expelled into the outside environment, are made to flow by forced draft inside tubes immersed in water; the gases thus transfer heat to the water, heating it, and said water is sent to the heating system.
  • DE-A-19806428 discloses a pellet boiler having a combination of elements as set forth in the pre-characterizing portion of the appended claim 1.
  • the aim of the present invention is to solve the above-mentioned problems, eliminating the drawbacks of the cited background art, by providing a pellet boiler which has high energy efficiency and is therefore capable of heating even large enclosed spaces and optionally of heating simultaneously a sufficient amount of fluid for hygienic-sanitary uses and of having warm air in the surrounding environment,
  • an object of the present invention is to provide a pellet boiler which does not require frequent cleaning and maintenance interventions and has a long life.
  • Another object of the invention is to achieve high energy efficiency, utilizing optimally the heat generated by the combustion of the pellets.
  • Another object of the invention is to provide a pellet boiler which is structurally simple and has low manufacturing costs.
  • the reference numeral 1 designates a pellet boiler with high energy recovery.
  • the boiler I comprises a frame, which is composed of a footing 2, which has a rectangular base and from two sides of which there protrude two uprights 3, and a front wall 4, in which a first opening 5 is provided; a door 6 for accessing a combustion chamber 7 is hinged to said first opening, and said combustion chamber is delimited at the rear by a first wall 8, connected to an overlying heat exchanger 29, and at the front by a second wall 9.
  • a plurality of first through slots 10 is formed proximate to the upper end of the front wall 4.
  • a removable hatch 11 is formed proximate to the lower end of the front wall 4 and allows access to a control panel for activating several electrical and/or hydraulic devices of the boiler 1 (not shown in the accompanying figures).
  • a hollow hopper 12 for pellets is fixed between the upper ends of the uprights 3, in the rear region of the boiler 1, and can be closed in an upper region by means of a lid 100, which conveniently can be opened laterally in order to facilitate filling; said lid can be hidden from view by a door 101 pivoted along one side to the boiler.
  • the walls of the hopper 12 are thermally insulated in order to avoid the overheating and consequent possible spontaneous ignition of the pellets contained therein.
  • One or more screw feeders 13 are provided at the bottom of the hopper 12, are actuated for example by a corresponding number of electric motors, and are connected, at their upper end, to appropriate ducts 14, which are connected to the combustion chamber 7.
  • a box-like element 15 is provided below the combustion chamber 7, between the first wall 8 and the second wall 9, a box-like element 15 is provided, which is advantageously approximately shaped like a parallelepiped and hollow and is connected, by means of a sleeve 16, to the outside at the rear region of the boiler 1.
  • the box-like element 15 is open upward, toward the inside of the combustion chamber 7, and is closed thereat by a hearth 17, which is partially inserted therein and is advantageously approximately frustum-shaped and arranged so that its smaller end face is directed toward the bottom of the box-like element 15.
  • the hearth 17 made for example of steel or cast iron, has means for feeding primary air, which are constituted advantageously by first through holes 18 formed in the portion of the hearth 17 which lies inside the box-like element 15; the first holes 18 allow the passage of the primary combustion-supporting air required for the combustion of the pellets inside the hearth 17.
  • an igniter 19 which is adapted to trigger the combustion of the pellets; said igniter is constituted advantageously by a tube 20 inside which an electric resistor 21 is arranged.
  • the boiler 1 is provided with means for feeding secondary combustion-supporting air into the combustion chamber 7, which advantageously comprises a first plate 22, preferably made of cast iron, which is arranged approximately vertically inside and to the rear of the combustion chamber 7 above the hearth 17 and is spaced from the first wall 8, so as to be struck directly by the flame generated by the combustion of the pellets.
  • a first plate 22 preferably made of cast iron, which is arranged approximately vertically inside and to the rear of the combustion chamber 7 above the hearth 17 and is spaced from the first wall 8, so as to be struck directly by the flame generated by the combustion of the pellets.
  • the first plate 22 is approximately parallel and spaced with respect to the first wall 8 so as to form an interspace 23, which is open in a lower region and is connected to the outside of the combustion chamber 7.
  • the interspace 23 is connected to the inside of the combustion chamber 7 through second holes 24 formed in the first plate 22.
  • Ribs 8a are associated with the first wall 8 and with the plate 22, are directed toward the combustion chamber, at the interspace 23, form a finned structure, and are adapted to increase the heat exchange surface of the plate 22 in contact with the combustion gases and the flames in the combustion chamber, heating by conduction the air that is present in the interspace 23.
  • the ribs 8a are arranged radially and diverge upward at the plate 22.
  • a second plate 25 protrudes from the second wall 9 above the first opening 5 and toward the inside of the combustion chamber and is provided with a first inclined portion and a second vertical portion, which is arranged so as to affect approximately half of the space provided between the facing heat exchanger 29 and the second wall 9.
  • the second plate 25 delimits, within the combustion chamber 7, an inner chamber 7a, which is comprised between the heat exchanger 29 and the second plate 25, and an outer chamber 7b, which is comprised between the second plate 25 and the second wall 9.
  • the inner chamber 7a and the outer chamber 7b are insulated hermetically from each other by the second plate 25.
  • the outer chamber 7b is connected to the outside environment through second slots 26, which are formed in the second wall 9 and face the first slots 10.
  • the outer fins 27 and the inner fins 28 are made of a material which is a good heat conductor, of the metallic type.
  • the heat exchanger 29 is constituted by a hollow hermetic enclosure 30, within which there is a plurality of channels 31, which are approximately vertical and advantageously parallel and connected to each other so as to form a coiled or labyrinth-like path for the combustion gases.
  • the combustion gases are conveyed into the channels 31 through at least one upper intake 35 and at least one first lower outlet 36, with which it is possible to associate means for the forced draft of the combustion gases, which are constituted advantageously by one or more first fans 37, the delivery of which is connected to a discharge tube 38, through which the combustion gases are expelled outside the boiler 1.
  • the enclosure 30 is provided, in a lower region, with a second intake 33 and, in an upper region, with a second outlet 34, so as to form a labyrinth-like path 32 for a heat transfer medium which is adapted to be used in a heating and/or hygienic-sanitary system of a building.
  • Fins 31a protrude from one or more of the internal walls of the channels 31, approximately at right angles thereto, are arranged mutually side by side, and are aligned along axes which are transverse and/or longitudinal with respect to the channels 31, so as to form an alveolar structure.
  • the part of the fins 31a arranged longitudinally is riveted to the contact surface so as to ensure a suitable and expected heat exchange.
  • said fins being made of a metallic material which does not have a very high heat conductivity, although continuing to transfer heat to the heat transfer medium by conduction, become hot and burn the unburnt substances which otherwise deposit thereon, generating additional energy.
  • the boiler 1 comprises means for the forced input of warm air into the environment, which are constituted advantageously by one or more ducts 40, which are connected, at a first end thereof, to the outer chamber 7b and, at a second end, to the delivery of a second fan 41, which is adapted to force air from the outside environment into the outer chamber 7b.
  • the screw feeders 13 start turning, conveying the pellets from the hopper 12, through the ducts 14, into the hearth 17.
  • the electric resistor 21 of the igniter 19 begins to warm, and when it reaches a preset temperature, which is sufficient to trigger the ignition of the pellets, the first fans 37 start to operate, drawing combustion gases from the combustion chamber 7 or forcing them to pass through the channels 31 of the heat exchanger 29, and then discharging them, through the discharge tube 38, into the outside environment, producing in the combustion chamber 7 a partial vacuum with respect to the outside environment.
  • the partial vacuum draws air through the first holes 18 of the hearth 17 and the tube 20 of the igniter 19; said air, by making contact with the electric resistor 21, is heated and enters the hearth 17 at a very high temperature (typically between 500 and 600°C), such as to trigger the combustion of the pellets.
  • a very high temperature typically between 500 and 600°C
  • An appropriately provided temperature sensor detects the ignition of the pellets and interrupts the heating of the electric resistor 21.
  • the flame generated by the combustion of the pellets in the hearth 17 rises, striking the first plate 22.
  • combustion chamber 7 Since the combustion chamber 7 is in partial vacuum, air is drawn from the outside environment through the interspace 23 and the second holes 24, thus making contact with the first plate 22 and entering the combustion chamber 7 at a high temperature; other air at a high temperature is thus introduced in the combustion chamber 7 and improves the combustion of the pellets, reducing the percentage of any unburnt substances and increasing the thermal efficiency of the boiler 1.
  • the combustion gases then enter the channels 31 of the heat exchanger 29, flowing through it completely until they exit from the discharge tube 38.
  • the combustion gases release by conduction part of the heat they contain to the heat transfer medium which circulates along the path 32.
  • the execution of the channels is such as to lead to a substantial overheating of the fins and therefore to very high temperatures, which cause the combustion of any particles of unburnt substances conveyed by the combustion gases; said particles are therefore burned, becoming ash, which can be removed periodically, with rather long periods between one cleaning intervention and the next.
  • the amount of heat sent to the heat transfer medium depends on the amount of fuel burned in the combustion chamber, and this entails a variation of the flow rate of the combustion gases through the channels 31.
  • the boiler according to the invention thanks to the presence of the heat exchanger and to the particular arrangement of the channels 31 having a very specific heat exchange coefficient which reach high temperatures and burn any unburnt particles present in the combustion gases, allows to minimize the deposition of said particles on the walls of the path 32 affected by the heat transfer medium, thus reducing the required cleaning and maintenance interventions and increasing the lifespan of the boiler.
  • the invention in view of its structure, ensures the possibility of introducing greater or smaller quantities of heated air depending on the requirements of the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)

Claims (6)

  1. Chaudière à combustible granulé (1) comprenant:
    une chambre de combustion (7) qui est délimitée à l'arrière par une première paroi (8) et à l'avant par une seconde paroi (9) et qui contient un foyer (17) dans une zone inférieure,
    des moyens (16, 18) pour alimenter la chambre de combustion (7) en air comburant primaire,
    un échangeur de chaleur (29) qui est disposé au-dessus de ladite chambre de combustion (7) pour la récupération des gaz de combustion et pour un fluide caloporteur,
    une trémie (12) pour lesdits granulés, ladite trémie (12) étant prévue dans une zone inférieure avec des moyens (13) pour alimenter ledit foyer (17) et, dans une zone supérieure avec un couvercle (100) qui s'enlève et s'ouvre latéralement,
    des moyens (41) pour l'entrée d'air chaud forcée dans l'environnement,
    un bâti qui se compose d'un pied (2), des côtés duquel font saillie deux montants (3), et d'une paroi frontale (4), dans laquelle il y a une première ouverture (5), sur laquelle est articulée une porte pour l'accès à ladite chambre de combustion (7), qui est délimitée à l'arrière par ladite première paroi (8) et à l'avant par ladite seconde paroi (9), entre lesquelles il y a un élément creux en forme de boîte (15) qui est relié à l'extérieur et fermé dans une zone supérieure par ledit foyer (17) qui présente, dans une zone inférieure, des premiers trous (18) pour le passage de l'air comburant primaire requis pour la combustion desdits granulés,
    chaudière (1) caractérisée en ce qu'elle comprend en plus :
    des moyens (22, 23, 24) pour alimenter la chambre de combustion (17), qui comprend un espace intermédiaire (23) ménagé au-dessus dudit foyer (17) et adjacent à la première paroi (8), en air comburant secondaire depuis l'extérieur, et une première plaque (22) qui est disposée à peu près verticalement à l'intérieur et derrière ladite chambre de combustion (7) au-dessus dudit foyer (17), et qui est espacée par rapport à ladite première paroi (8) de sorte à être frappée directement par la flamme générée par la combustion desdits granulés, ladite première plaque (22) étant disposée à peu près parallèlement et de façon espacée par rapport à ladite première paroi (8) de manière à former ledit espace intermédiaire (23) qui est ouvert vers le bas et relié à l'extérieur de ladite chambre de combustion (7), ledit espace intermédiaire (23) étant relié à l'intérieur de ladite chambre de combustion (7) via des seconds trous (24) pratiqués dans ladite première plaque (22),
    des nervures (8a), qui forment une structure à ailettes, étant associées à ladite première paroi (8) et à ladite plaque (22) et dirigées vers ladite chambre de combustion (7), au niveau dudit espace intermédiaire (23), lesdites nervures (8a) étant adaptées à augmenter la surface d'échange de chaleur en contact avec les gaz de combustion et à se terminer dans la chambre de combustion (7) en chauffant par conduction l'air présent dans ledit espace intermédiaire (23), lesdites nervures (8a) étant disposées radialement et de façon à diverger vers le haut au niveau de ladite plaque (22),
    une seconde plaque (25) qui fait saillie de ladite seconde paroi (9) au-dessus de ladite ouverture (5) et vers l'intérieur de ladite chambre de combustion (7) et qui est munie d'une première portion inclinée et d'une seconde portion verticale qui est disposée de sorte à affecter approximativement la moitié de l'espace prévu entre ledit échangeur de chaleur faisant face (29) et ladite seconde paroi (9), ladite seconde plaque (25) délimitant, à l'intérieur de ladite chambre de combustion (7), une chambre interne (7a) qui est comprise entre ledit échangeur de chaleur (29) et ladite seconde plaque (25), et une chambre externe (7b) qui est comprise entre ladite seconde plaque (25) et ladite seconde paroi (9), lesdites chambres interne et externe (7a, 7b) étant isolées hermétiquement l'une par rapport à l'autre via ladite seconde plaque (25), ladite chambre externe (7b) étant reliée à l'environnement extérieur via des secondes fentes (26) qui sont pratiquées dans ladite seconde paroi (9) et font face à des premières fentes (10) qui sont pratiquées à proximité de l'extrémité supérieure de ladite paroi frontale (4),
    ledit échangeur de chaleur (29) étant disposé à l'arrière de ladite chambre de combustion (7), dans une zone qui est située au-dessus de ladite première paroi (8) de ladite chambre de combustion (7) et fait face à ladite seconde plaque (25), ledit échangeur de chaleur (29) étant constitué par une enceinte hermétique creuse (30), à l'intérieur de laquelle il y a une pluralité de canaux (31) qui sont à peu près verticaux et avantageusement parallèles et reliés les uns aux autres de sorte à former un chemin hélicoïdal ou labyrinthique pour les gaz de combustion, lesdits gaz de combustion étant transportés dans lesdits canaux (31) via au moins une première entrée supérieure (35) et au moins une première sortie inférieure (36) associées à des moyens pour le tirage forcé des gaz de combustion, moyens qui sont constitués par un ou plusieurs premiers ventilateurs (37), les sorties desquels sont reliées à un tube de décharge (38), via lequel les gaz de combustions sont expulsés à l'extérieur,
    ladite trémie (12) étant disposée adjacente et à l'arrière dudit échangeur de chaleur (29) et
    lesdits moyens d'entrée d'air chaud forcée dans l'environnement étant constitués par un ou plusieurs conduits (40) qui sont reliés, à une première extrémité, à ladite chambre externe (7b) et à une seconde extrémité, à la sortie du second ventilateur (41) qui est adapté à aspirer de l'air depuis l'environnement extérieur dans ladite chambre externe (7b).
  2. Chaudière (1) suivant la revendication 1, caractérisée en ce que des ailettes externes (27) et des ailettes internes (28) font respectivement saillie, de manière à former des angles approximativement droits avec elles, des deux surfaces de ladite seconde plaque (25), surfaces qui sont respectivement dirigées vers ladite seconde paroi (9) et vers ledit échangeur de chaleur (29), lesdites ailettes (27, 28) étant soudées de façon appropriée et réalisées dans une matière qui est un bon conducteur thermique.
  3. Chaudière (1) suivant la revendication 1, caractérisée en ce que ladite enceinte (30) est prévue dans une zone inférieure, avec une seconde entrée (33) et dans une zone supérieure, avec une seconde sortie (34) de manière à former un chemin labyrinthique pour un fluide caloporteur qui est adapté à être utilisé dans un système de chauffage et/ou un système sanitaire et hygiénique d'un bâtiment.
  4. Chaudière (1) suivant la revendication 3, caractérisée en ce que des ailettes (31 a), qui font saillie d'une ou de plusieurs des parois internes desdits canaux (31) de manière à former des angles approximativement droits avec celles-ci, sont disposées les unes à côté des autres et alignées le long d'axes qui s'étendent transversalement et/ou longitudinalement par rapport auxdits canaux (31) de manière à former une structure alvéolaire, la partie desdites ailettes (31a), qui est disposée longitudinalement, étant rivetée à la surface de contact de sorte à assurer un échange de chaleur acceptable et escompté.
  5. Chaudière (1) suivant une ou plusieurs des revendications précédentes, caractérisée en ce que ladite trémie (12) pour lesdits granulés est creuse et peut être fermée au moyen d'un couvercle (100) s'ouvrant latéralement, ledit couvercle (100) étant caché à la vue par une porte (101) qui est articulée sur ladite chaudière (1), un ou plusieurs distributeurs à vis (13) étant disposés au fond de ladite trémie (12) et reliés, à leurs extrémités supérieures, à des conduits (14), prévus de façon appropriée, qui sont reliés à ladite chambre de combustion (7).
  6. Chaudière (1) suivant une ou plusieurs des revendications précédentes, caractérisée en ce qu'un allumeur adapté à déclencher la combustion desdits granulés est disposé à l'arrière du fond dudit foyer (17), ledit allumeur étant constitué par un tube (20) qui fait saillie à l'extérieur par rapport à ladite chambre de combustion (7) et à l'intérieur duquel il y a une résistance électrique (21).
EP06114199.0A 2005-06-17 2006-05-19 Chaudière à combustible granulé à haute récupération d'énergie Not-in-force EP1734303B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000086A ITTV20050086A1 (it) 2005-06-17 2005-06-17 Struttura di caldaia a pellets ad elevato recupero energetico.

Publications (3)

Publication Number Publication Date
EP1734303A2 EP1734303A2 (fr) 2006-12-20
EP1734303A3 EP1734303A3 (fr) 2008-04-23
EP1734303B1 true EP1734303B1 (fr) 2014-06-11

Family

ID=36997868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114199.0A Not-in-force EP1734303B1 (fr) 2005-06-17 2006-05-19 Chaudière à combustible granulé à haute récupération d'énergie

Country Status (2)

Country Link
EP (1) EP1734303B1 (fr)
IT (1) ITTV20050086A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVR20060194A1 (it) * 2006-12-15 2008-06-16 Cola S R L Stufa, particolarmente alimentabile a pellets, misto legna, graniglia, mais, combustibili vegetali, biomassa e simili
US7823578B2 (en) * 2007-01-24 2010-11-02 Ardisam, Inc. High efficiency biomass stove
EP2103872A1 (fr) * 2008-03-17 2009-09-23 Jørn Pøhl Christensen Poêle à bois avec brûleur de pastilles de bois
ITBS20080142A1 (it) * 2008-07-25 2010-01-25 Cristini E Sartori Snc Dispositivo atto ad interrompere le vibrazioni applicato alle stufe a pellet in genere
WO2010092410A2 (fr) * 2009-02-10 2010-08-19 Notas, George Système de commande électronique pour cheminée à bon rendement énergétique
FR2947328B1 (fr) * 2009-06-24 2012-05-25 Supra Dispositif de chauffage par combustion de combustible solide fragmente
IT1397922B1 (it) * 2010-02-11 2013-02-04 Domotherm S R L Sistema di riscaldamento domestico con sorgente di calore costituita da focolare chiuso alimentato da legna e/o biomasse e sistema di recupero calore dai fumi ad esso applicabile.
ITCZ20100007A1 (it) * 2010-06-26 2010-09-25 Ungaro Srl Termocucina alimentata a pellet o grani di biomassa atta sia a cucinare che a riscaldare acqua per riscaldamento domestico
IT1402835B1 (it) * 2010-11-30 2013-09-27 Casana Caldaia per la combustione di biomasse.
JP6156751B2 (ja) * 2012-10-29 2017-07-05 パナソニックＩｐマネジメント株式会社 発電装置及びコジェネレーションシステム
ES2540153B1 (es) * 2013-10-09 2016-04-20 Domingo Aquilino VILLORIA OTERO Generador de aire caliente por combustión de biomasa
FR3019272B1 (fr) * 2014-03-25 2019-07-12 Actinov Sas Circuit d'air carburant et d'evacuation des gaz brules pour poele a granules de bois, autonome a usage domestique
GB2533222A (en) * 2014-12-12 2016-06-15 Xtralec Ltd Improved combustion apparatus
ITUB20152597A1 (it) * 2015-07-15 2017-01-15 Linea Vz S R L Barbecue in metallo alimentato con particolare bruciatore a pellet.
ITUB20152314A1 (it) * 2015-07-20 2017-01-20 Ungaro Srl Stufa a pellet
IT201800007325A1 (it) * 2018-07-19 2020-01-19 Caldaia a pellet o a biomassa
IT202200003668A1 (it) * 2022-02-28 2023-08-28 Amg S P A Corpo stufa perfezionato e stufa a pellet che utilizza il sudetto corpo stufa

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877000A (en) * 1955-09-16 1959-03-10 Int Harvester Co Heat exchanger
GB2123944A (en) * 1982-07-22 1984-02-08 Dennis Beardmore Heating air in fuel-effect gas fires
IE54023B1 (en) * 1982-09-29 1989-05-24 Waterford Foundry Ltd Improvements in and relating to room heating apparatus
CA2098592A1 (fr) * 1990-12-17 1992-06-18 Carrol E. Buckner Appareil de chauffage aux combustibles solides a pression equilibree
IT1270726B (it) * 1993-10-14 1997-05-07 Caminetti Montegrappa Srl Stufa a combustibile
DE4344760A1 (de) * 1993-12-28 1995-06-29 Wodtke Gmbh Ofen für feste Brennstoffe
DE19806428A1 (de) 1997-02-18 1998-08-20 Patram Patent And Trademark Ad Heizeinrichtung mit verbessertem Wirkungsgrad
DK9700348U3 (da) * 1997-09-23 1997-12-29 Greenfire Aps Stokerbrændeovn til træpiller
DE19804093C2 (de) * 1998-02-03 2003-06-12 Wodtke Gmbh Wasser-Wärmetauscher für Öfen und Kleinfeuerungsanlagen für feste, rieselfähige Brennstoffe
DE19927607A1 (de) * 1999-06-17 2000-12-21 Behr Gmbh & Co Ladeluftkühler mit einem Kühlmitteleintritt sowie einem Kühlmittelaustritt
ITVR20020001U1 (it) * 2002-01-10 2003-07-10 Gruppo Piazzetta Spa Stufa a pellet perfezionata
US7665406B2 (en) * 2003-04-09 2010-02-23 Even Temp, Inc. Apparatus and method for combustion

Also Published As

Publication number Publication date
EP1734303A2 (fr) 2006-12-20
EP1734303A3 (fr) 2008-04-23
ITTV20050086A1 (it) 2006-12-18

Similar Documents

Publication Publication Date Title
EP1734303B1 (fr) Chaudière à combustible granulé à haute récupération d'énergie
US5893358A (en) Pellet fuel burner for heating and drying systems
KR100917787B1 (ko) 고체연료용 열풍기
US4565184A (en) Combustible particulate fuel heater
US3930490A (en) Fireplace heater
EP2884200A1 (fr) Chaudière de chauffage central
KR101134044B1 (ko) 장작 및 펠렛 겸용 난로
KR20140118362A (ko) 난방 펠릿난로
GB1379327A (en) Solid waste incinerators
US4292933A (en) Furnace
US3938496A (en) Fireplace forced air circulation means
KR200446195Y1 (ko) 우드펠릿 온수보일러
RU46561U1 (ru) Банная печь
KR100825822B1 (ko) 고체연료용 난방기의 화격자
KR101148696B1 (ko) 펠렛 보일러
US4386599A (en) Fireplace stove
CA2869690A1 (fr) Simulation de cheminee utilisant un combustible biomasse
JP3119032U (ja) ペレットストーブ
KR101727692B1 (ko) 펠릿 난로
JP2007101124A (ja) 燃焼装置
RU2272960C1 (ru) Устройство для сжигания топлива
US2247304A (en) Storage furnace
CN217178707U (zh) 一种可用于供暖的烤箱
GB2233748A (en) Improvements in or relating to back boilers
RU2023957C1 (ru) Камин

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: F23L 9/00 20060101ALI20080320BHEP

Ipc: F23B 40/08 20060101AFI20060926BHEP

17P Request for examination filed

Effective date: 20081023

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20100129

RIC1 Information provided on ipc code assigned before grant

Ipc: F23L 9/00 20060101ALI20131015BHEP

Ipc: F23B 40/08 20060101AFI20131015BHEP

Ipc: F24H 6/00 20060101ALI20131015BHEP

Ipc: F24B 1/02 20060101ALI20131015BHEP

Ipc: F23B 50/12 20060101ALI20131015BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20131219

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 672452

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006041851

Country of ref document: DE

Effective date: 20140717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140912

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140611

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 672452

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140611

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141013

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141011

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006041851

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

26N No opposition filed

Effective date: 20150312

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006041851

Country of ref document: DE

Effective date: 20150312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150528

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150527

Year of fee payment: 10

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150531

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150519

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150519

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006041851

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140611