EP3492814B1 - Biomasseoven mit gesenkten emissionen - Google Patents

Biomasseoven mit gesenkten emissionen Download PDF

Info

Publication number
EP3492814B1
EP3492814B1 EP18209730.3A EP18209730A EP3492814B1 EP 3492814 B1 EP3492814 B1 EP 3492814B1 EP 18209730 A EP18209730 A EP 18209730A EP 3492814 B1 EP3492814 B1 EP 3492814B1
Authority
EP
European Patent Office
Prior art keywords
stove
flue
area
gas
apertures
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.)
Active
Application number
EP18209730.3A
Other languages
English (en)
French (fr)
Other versions
EP3492814A1 (de
Inventor
Simone Pietro PARMIGIANI
Domenico PETROCELLI
Luigi Francesco POLONINI
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.)
Aico SpA
Original Assignee
Aico SpA
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 Aico SpA filed Critical Aico SpA
Publication of EP3492814A1 publication Critical patent/EP3492814A1/de
Application granted granted Critical
Publication of EP3492814B1 publication Critical patent/EP3492814B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F24B1/026—Closed stoves with several combustion zones
    • 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
    • F23B50/02—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 forming a column, stack or thick layer with the combustion zone at its bottom
    • F23B50/10—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 forming a column, stack or thick layer with the combustion zone at its bottom with the combustion zone at the bottom of fuel-filled conduits ending at the surface of a fuel bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • 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
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/026—Supply of primary and secondary air for combustion
    • 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
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/028—Arrangements combining combustion-air and flue-gas circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages

Definitions

  • the present invention concerns a biomass stove, particularly a pellet stove.
  • This type of stove typically comprises a combustion chamber, an unburned gas storage chamber, a flue gas extractor fan device for extracting unburned gas from the storage chamber and for sending it to an exhaust flue, and at least one air intake for feeding air from the outside to the inside of the combustion chamber.
  • the combustion chamber comprises a brazier area adapted to receive the biomass, typically by means of an auger, and to generate combustible gas and a flame area intended for the combustion of combustible gas coming from the brazier area.
  • first and a second series of apertures are typically present in these stoves.
  • the first series of apertures is placed at the brazier area for supplying primary air, while the second series of apertures is placed at the flame area for supplying secondary air.
  • known solutions provide for the use of a recirculation system which allows to reintroduce flue gases in the flame area of the stove such that to subject them to further combustion before being discharged.
  • Combustion stoves are known, in particular wood stoves in relatively large numbers, such as for example the one described in EP0268208 , in which two supplies of combustion air or other combustion gas with similar effects are provided.
  • An aperture for the primary combustion air is provided in communication with the combustion chamber in which the combustible material load is housed.
  • the combustible material rests on a combustion plane in which one or more apertures are provided for the passage of the gases generated in the combustion of the combustible material in an underlying storage chamber of these gases, also named flue gases. This chamber in turn communicates with an exhaust flue.
  • a post-combustion chamber for flue gases coming from the combustion chamber.
  • a supply duct of secondary ambient air flows in this post-combustion chamber and causes any possible unburned residues present in the flue gases coming from the combustion chamber to be burned before these flue gases are transferred into the storage chamber from where they are eliminated by the exhaust flue.
  • the document DE202006007860U1 shows a particular of a combustion chamber intended to operate in devices of the type described in EP260208 .
  • the primary air is directly supplied into a combustion chamber, while the secondary air is supplied into a post-combustion chamber in which the flue gases coming from the combustion of the combustible material are subjected to combustion.
  • the primary air is supplied into the combustion chamber which is at a higher height than the post-combustion chamber of the fuel gases.
  • This chamber has an independent inlet for the supply of secondary combustion air.
  • the flue gases deriving from the post-combustion process can be recovered and mixed with the fuel gases coming from the combustion chamber so that to be subjected to the post-combustion step together.
  • the post-combustion step is carried out directly on the flue gases in a post-combustion chamber that is separate from the brazier, and the flue gases deriving from the post-combustion process are at least partially reintroduced in the post-combustion chamber where they are mixed with the flue gases combing from the combustion chamber and that still have to be subjected to the post-combustion.
  • the post-combustion of the flue gases does not participate directly in the combustion of the combustible.
  • Object of the present invention is therefore to achieve a biomass stove, particularly a pellet stove, with reduced NO x emissions compared to traditional stoves.
  • the invention achieves the object with a stove as described in the beginning, in which there is a branch intercepting the flue gas directed to the exhaust flue such to at least partially direct said flue gases to the primary gas inlet apertures.
  • the unburned gases are sent to the primary air inlet, i.e. in the brazier area, instead of being directed on the flame area in order to face a further combustion.
  • the primary air therefore results poorer in oxygen and at a higher temperature compared to traditional stoves. This favors the pyrolytic step, i.e. the generation of combustible gases intended to be burned with secondary comburent air.
  • Pyrolysis is a reaction of transformation of a solid combustible into gas, which occurs at high temperatures without a flame and, therefore, without oxidation.
  • the inventors have surprisingly discovered how such reaction can be facilitated by using the same flue gases intended to be reclaimed in a very original way and with a drastic reduction of the pollutants released in the environment as the final result.
  • Flue gases can be channeled directly to the primary air intake, both pure and mixed with the external air, or they can also be sent both to the primary inlet and to the secondary inlet so that to also achieve the beneficial effect of the secondary combustion of unburned gases in order to further improve the quality of the flue gases released in the environment.
  • Constructive variations provide the use of a mixing chamber in fluid dynamic communication either only with the primary inlets or with the primary and secondary inlets, by arranging the external air intake at the primary inlets so that to achieve different flue gases/air mixing ratios for the primary and secondary inlets with a simple geometric arrangement.
  • More complex solutions in which the stoichiometric ratio of the primary and secondary gases can be finely varied by acting on the flows of flue gases and external air, can obviously be provided, for example with fans and separate mixing chambers.
  • the bypass created for the recirculation of exhausted flue gases is advantageously provided inside the stove structure downstream the fan acting as the extractor device of flue gas so that to achieve a very compact solution. It is however also possible to provide an external deviation to be applied to traditional stoves so that to intercept part of the flue gases directed to the chimney flue and to direct them to the primary air inlet. This allows to achieve a kit to be used to retrofit existing systems with clear benefits for users in terms of direct costs and installation fees.
  • the invention concerns kits in combinations with biomass stoves, particularly pellet stoves, equipped with a flue gas outlet for the connection to an exhaust flue, a primary air inlet and a secondary air inlet in fluid dynamic communication respectively with a brazier area and a flame area of a combustion chamber, characterized in that it comprises a fitting intended for the connection of flue gas outlet with the exhaust flue and with primary air inlet to make a stove according to one or more of the preceding claims.
  • the fitting can advantageously comprise a choke, a grid, a labyrinth or the like to adjust the ratio of the flue gases reintroduced in the combustion chamber through the primary air inlet of the stove in a simple and effective way.
  • the storage chamber is directly provided under the combustion chamber and the brazier also significantly juts out inside the storage chamber.
  • the brazier is well-like, cup-like or bowl-like, the latter being open on the side facing the combustion chamber and jutting out inside the storage chamber under the combustion chamber and which storage chamber constitutes a flue gases and air mixing chamber.
  • the flame is generated in this well that has apertures for the primary combustion air intake on the bottom and apertures for the secondary air intake at the end of said brazier, the end facing the combustion chamber and being open towards it, which are essentially coinciding or interfering with the area of said brazier 7 in which the flame is formed.
  • An embodiment provides that the storage or mixing chamber of the flue gases with ambient air is separated in two parts of which one directly communicates with the secondary air passage apertures and the other directly with the passage apertures of the primary air and recirculated flue gases.
  • the brazier is a body with a vertical axial extension that ends in a diametrical bottom wall of the combustion chamber and with its upper side open, while the bottom wall, at or immediately near which the inlet apertures of the primary combustion air and recirculation flue gases are provided, ends in the storage or mixing chamber which is under the combustion chamber.
  • the primary air supply together with the unburned flue gases, is supplied to these lower apertures, while the secondary air is supplied through the holes in the upper part of the brazier, which are rather spaced from the bottom wall.
  • a biomass stove typically comprises a compartment or tank, generally loaded from above, that contains the biomass to be burned. It can have a capacity ranging from fifteen and up to sixty or more kilograms depending on the stove model. Inside it, there is an endless screw or auger that drags the pellet from the tank to the inside of the brazier, where the combustible material is burned thanks to the presence of an electric resistance that, becoming incandescent in the start-up step, triggers the flame in the presence of oxygen coming from an external air inlet.
  • the brazier can, for example, be made according to the teachings of the patent IT1428942 of the same Proprietor.
  • the flue gases deriving from combustion are channeled in an exhaust flue by an extractor fan.
  • the heat produced is diffused in the environment either by natural convection, by forced air with one or more fans that help distribute the hot hair in the adjacent environments and by a heat-transfer fluid that is circulated in an exchanger of the stove to distribute the heat through the exchangers of a heating system.
  • the present invention aims to achieve an improvement that allows to reduce the polluting emissions, in particular NO x , of traditional stoves by acting on the mechanism that adjusts their combustion.
  • the following description will therefore mainly focus on such improvement, leaving out the details concerning the shared operations of these types of stoves, which are well known to the operators.
  • the biomass stove comprises a combustion chamber 2, an unburned gas storage chamber 3, a flue gas extractor fan device 4 for extracting unburned gas from the storage chamber 3 and for sending it to an exhaust flue 5, and at least one air intake 6 for feeding air from the outside to the inside of the combustion chamber 2.
  • the combustion chamber 2 in turn comprises a brazier area 7 adapted to receive the biomass and to generate combustible gas and a flame area 8 intended for the combustion of combustible gas coming from the brazier area 7.
  • Purpose of the primary gas is to transform the biomass into gases intended to be burned in the flame area thanks to the comburent action exerted by the oxygen present in the secondary gas, typically air.
  • a branch 9 intercepting the flue gases directed to the exhaust flue 5 such to at least partially direct said flue gases to the primary gas inlet apertures 107.
  • the mixing chamber can be a compartment separate from the combustion chamber and communicating therewith.
  • the mixing chamber 10 is in fluid dynamic communication with at least the primary gas inlet apertures 107 and the flue gas intercepting branch 9 to introduce unburned gas, pure or mixed with air coming from outside, into the brazier area 7.
  • the mixing chamber 10 has an inlet 110 for flue gases coming from the branch 9 and an inlet for the external air 6.
  • the inlet for the flue gases 110 is advantageously provided at the apertures 107 of the brazier area 7 while the air inlet 6 is provided at the apertures 108 of the flame area 8 such that the fuel gases/air mixture reaching the apertures 107 of brazier area 7 has a stoichiometric content different from that of the flue gases/air mixture reaching the apertures 108 of the flame area 8.
  • the mixing chamber 10 is divided in two parts 210, 310 not in communication, for example through a septum.
  • the first part of the mixing chamber 201 is in fluid dynamic communication with the apertures 107 of the brazier area 7 and the intercepting branch 9 of the flue gas while the second part of the mixing chamber 310 is in fluid dynamic communication with the apertures 108 of the flame part 8 and the external air 6.
  • the flue gas intercepting branch 9 has an inlet 109 for the external air such that intercepted flue gases are mixed with the external air before entering the first part of the mixing chamber 210 without altering the oxygen content present in the primary gas.
  • the flue gas intercepting branch 9 is placed outside of the stove on a duct 12 that puts in communication the extractor fan device 4 with the exhaust flue 5. This is particularly advantageous in case of the retrofit of existing stoves.
  • the flue gas intercepting branch 9 is placed inside the stove body downstream the extractor fan device 4.
  • the extractor fan device 4 and the flue gas intercepting branch 9 are housed within a compartment 11 inside the stove adjacent to the mixing chamber 210.
  • the first part of the mixing chamber 210 is adjacent to the compartment 11 housing the extractor fan device 4 and has an aperture for the inflow of flue gases coming from the branch 9.
  • the first part 210 of the mixing chamber 10 can be closed as shown in figure 4 , or have an aperture 110 towards the outside for the inflow of air as shown in figure 5 .
  • the flue gas intercepting branch 9 can advantageously comprise a choke, a grid, a labyrinth or the like that in a fixed or variable geometrical manner defines the percentage of flue gases to be directed into the mixing chamber 10.
  • the inlet of the branch 9 for the flue gas recirculation flow is advantageously provided at a point of the flue gas path in which there is an overpressure compared to the existing pressure inside the flue gas path in the stove.
  • the flue gas path from the combustion chamber to the chimney flue itself is in depression, while in the volute of the extractor fan 4 and in the immediate vicinity of the delivery mouth thereof, an overpressure condition is generated, therefore according to a further embodiment of the invention that can be provided in combination with any one of the preceding variations described, the inlet of said branch 9 is provided at said volute of the extractor fan or immediately downstream the delivery mouth thereof.
  • An embodiment provides that said inlet of the branch 9 for the collection of the recirculation flue gases is provided approximately in the maximum overpressure area generated by the extractor fan and, in particular, at a distance not greater than 10-15 mm from the delivery mouth.
  • the extractor fan device 4 can advantageously be driven by a control unit able to set the flow rate of the flue gases intercepted by the branch 9, for example to adjust the air and recirculation flue gas supply with respect to the combustion process conditions.
  • the ideal conditions for obtaining an Nox reduction effect consist in adjusting the mixing ratio of the comburent air to recirculation flue gases so that to determine an oxygen content of the air and recirculation flue gas mixture present in the mixing chamber between 9 and 18% by volume.
  • Better effects are achieved in the narrower range of oxygen content that is preferably between 11 and 16% by volume.
  • the maximum efficiency of Nox content reduction in flue gases is obtained by setting the mixing between comburent air and recirculation flue gases so that to cause an oxygen content of the mixture in the mixing chamber between 13 and 14% by volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)

Claims (13)

  1. Biomasseofen (1) mit einer Verbrennungskammer (2), einer Sammelkammer (3) für unverbranntes Gas, einer Rauchgasabzugsgebläsevorrichtung (4) zum Abziehen von unverbranntem Gas aus der Sammelkammer (3) und zum Leiten desselben zu einem Abgaskanal (5), mindestens einem Lufteinlass (6) zum Zuführen von Luft von außen in das Innere der Verbrennungskammer (2), wobei die Verbrennungskammer (2) einen becher- oder schüsselartigen Kohlenbeckenbereich (7), der zur Aufnahme der Biomasse und zur Erzeugung von brennbarem Gas geeignet ist, und einen Flammenbereich (8) umfasst, der für die Verbrennung des aus dem Kohlenbeckenbereich (7) kommenden brennbaren Gases vorgesehen ist, wobei die Brennkammer (2) eine erste Reihe von Öffnungen (107) im Bodenbereich des Kohlenbeckens (7), optional in der Bodenwand oder in den Seitenwänden direkt neben der Bodenwand, zum Zuführen von Primärgas, insbesondere Umgebungsluft, und eine zweite Reihe von Öffnungen (108) im Flammenbereich (8), d.h. am oberen Ende des Kohlenbeckens (7), das zu einem oberen Teil der Brennkammer hin offen ist, zum Zuführen von Sekundärgas aufweist, wobei der Biomasseofen eine Abzweigung (9) umfasst, die die zum Abgaskanal (5) gerichteten Rauchgase abfängt, um die Rauchgase zumindest teilweise zu den Primärgaseinlassöffnungen (107) zu leiten, wobei eine Mischkammer (10) vorhanden ist, welche Mischkammer (10) in strömungstechnischer Verbindung mit zumindest den Primärgaseinlassöffnungen (107) des Bodenbereichs des Kohlenbeckenbereichs (7) und der Rauchgasabfangabzweigung (9) steht, um unverbranntes Gas, rein oder gemischt mit von außen kommender Umgebungsluft, in den Kohlenbeckenbereich (7) einzuführen, dadurch gekennzeichnet, dass die Mischkammer (10) einen Einlass (110) für aus dem Abzweig (9) kommende Rauchgase und einen Außenlufteinlass (6) aufweist, wobei der Rauchgaseinlass (110) an den Öffnungen (107) des Kohlenbeckenbereichs (7) vorgesehen ist und der Lufteinlass (6) an den Öffnungen (108) des Flammenbereichs (8) vorgesehen ist, so dass das die Öffnungen (107) des Kohlenbeckenbereichs (7) erreichende Rauchgas/Luft-Gemisch einen anderen stöchiometrischen Gehalt aufweist als das die Öffnungen (108) des Flammenbereichs (8) erreichende Rauchgas/Luft-Gemisch und wobei die Mischkammer (10) in zwei Teile (210, 310) unterteilt ist, die nicht direkt miteinander in Verbindung stehen, d.h. deren gemeinsame Trennwände keine Öffnungen aufweisen, die direkt in die eine oder andere Kammer münden, wobei der erste Teil der Mischkammer (210) in unmittelbarer strömungstechnischer Verbindung mit den Öffnungen (107) des Kohlenbeckenbereichs (7) und des Rauchgasabzweigs (9) steht und der zweite Teil der Mischkammer (310) in unmittelbarer strömungstechnischer Verbindung mit den Öffnungen (108) des Flammenteils (8) und der externen Umgebungsluft (6) steht.
  2. Ofen (1) nach Anspruch 1, wobei die Rauchgasabzweigung (9) einen Außenlufteinlass (109) aufweist, so dass die abgefangenen Rauchgase mit der Außenluft gemischt werden, bevor sie in den ersten Teil der Mischkammer (210) eintreten.
  3. Ofen (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rauchgasabzweigung (9) außerhalb des Ofens an einer Leitung (12) angeordnet ist, die die Abzugsgebläsevorrichtung (4) mit dem Abgaskanal (5) in Verbindung bringt.
  4. Ofen (1) nach einem oder mehreren der vorhergehenden Ansprüche, wobei die Rauchgasabfangsabzweigung (9) im Inneren des Ofenkörpers stromabwärts der Abzugsgebläsevorrichtung (4) angeordnet ist.
  5. Ofen (1) nach Anspruch 4, wobei die Abzugsgebläsevorrichtung (4) und die Rauchgasabfangsabzweigung (9) in einem Raum (11) innerhalb des Ofens neben der Mischkammer (210) untergebracht sind.
  6. Ofen (1) nach Anspruch 4 oder 5, wobei der erste Teil der Mischkammer (210) an den Raum (11) angrenzt, in dem die Abzugsgebläsevorrichtung (4) untergebracht ist, und eine Öffnung für das Einströmen von Rauchgasen aufweist, die von der Abzweigung (9) kommen.
  7. Ofen (1) nach Anspruch 8, wobei der erste Teil der Mischkammer (210) eine Öffnung (110) nach außen zum Einlassen von Luft aufweist.
  8. Ofen (1) nach einem oder mehreren der vorhergehenden Ansprüche, wobei die Rauchgasabfangsabzweigung (9) eine Drossel, ein Gitter, ein Labyrinth oder dergleichen aufweist, die in fester oder variabler geometrischer Weise den Anteil der in die Mischkammer (10) zu leitenden Rauchgase definiert.
  9. Ofen (1) nach einem oder mehreren der vorhergehenden Ansprüche, wobei die Abzugsgebläsevorrichtung (4) von einer Steuereinheit gesteuert wird, die eingerichtet ist zum Einstellen der Durchflussmenge der von der Abzweigung (9) abgefangenen Rauchgase.
  10. Ofen nach einem oder mehreren der vorhergehenden Ansprüche, mit Einstellmitteln zum Einstellen des Sauerstoffgehalts des Luft- und Rezirkulationsabgasgemisches im Bereich von 9 bis 18 Vol.-%, vorzugsweise von 11 bis 16 Vol.-% und insbesondere von 13 bis 14 Vol.-%.
  11. Ofen nach einem oder mehreren der vorhergehenden Ansprüche, wobei der Einlass des Rezirkulations-Rauchgasabzweiges (9) an der Volute des Abzugsgebläses oder an dessen Druckausgang vorgesehen ist, und jedenfalls in einem Rauchgasströmungsbereich, in dem durch die Wirkung des Abzugsgebläses (4) ein Überdruck herrscht.
  12. Bausatz, der in Kombination mit Biomasseöfen, insbesondere Pelletöfen, nach einem oder mehreren der vorhergehenden Ansprüche vorgesehen ist, wobei die Öfen mit einem Rauchgasauslass für den Anschluss an einen Abgaskanal, einem Primärlufteinlass und einem Sekundärlufteinlass in strömungstechnischer Verbindung mit einem Kohlenbeckenbereich bzw. einem Flammenbereich einer Brennkammer ausgestattet sind, wobei der Bausatz dadurch gekennzeichnet ist, dass er ein Fitting umfasst, das für die Verbindung des Rauchgasauslasses mit dem Abgaskanal und mit dem Primärlufteinlass vorgesehen ist, um einen Ofen nach einem oder mehreren der vorhergehenden Ansprüche 1 bis 11 herzustellen.
  13. Bausatz nach Anspruch 12, wobei das Fitting eine Drossel, ein Gitter, ein Labyrinth oder dergleichen umfasst, um das Verhältnis der durch den Primärlufteinlass des Ofens wieder in die Brennkammer eingeleiteten Rauchgase einzustellen.
EP18209730.3A 2017-12-04 2018-12-03 Biomasseoven mit gesenkten emissionen Active EP3492814B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201700139805 2017-12-04

Publications (2)

Publication Number Publication Date
EP3492814A1 EP3492814A1 (de) 2019-06-05
EP3492814B1 true EP3492814B1 (de) 2021-08-25

Family

ID=61656148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18209730.3A Active EP3492814B1 (de) 2017-12-04 2018-12-03 Biomasseoven mit gesenkten emissionen

Country Status (2)

Country Link
EP (1) EP3492814B1 (de)
ES (1) ES2899173T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000003050A1 (it) * 2020-02-17 2021-08-17 Mcz Group S P A Braciere
IT202100007760A1 (it) * 2021-03-30 2022-09-30 Palazzetti Lelio Spa Apparecchiatura di riscaldamento

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE449916B (sv) * 1981-07-23 1987-05-25 Hultgren Karl S H Anordning for forbrenning av fast brensle
US4438756A (en) * 1982-12-13 1984-03-27 Joseph G. Chamberlain Apparatus and method for accomplishing efficient burning of biomass fuel materials
FR2603813B1 (fr) 1986-09-11 1989-05-12 Rossignol Sa Raquette de tennis
DE8630875U1 (de) 1986-11-18 1987-01-29 Künzel, Haiko, 2084 Rellingen Brenner für einen feststoffbefeuerten Kessel
FR2752915A1 (fr) * 1996-08-29 1998-03-06 Miquee Max Chaudiere double combustion a tirage inverse
DE19646525C1 (de) * 1996-10-29 1998-06-10 Christian Dipl Ing Herlt Vergaserheizkessel für feste Brennstoffe, insbesondere für Holz
DE202006007860U1 (de) 2006-05-15 2006-09-21 Paul Künzel GmbH & Co. Brennofen für feste Brennstoffe
DE102011109780B3 (de) * 2011-08-09 2013-01-31 B & 0 Saatinvest Heizhaus OHG Heizvorrichtung für Holzbrennstoffe sowie Verfahren zu ihrem Betrieb
KR101404671B1 (ko) * 2012-06-26 2014-06-09 한국에너지기술연구원 목재 펠릿 보일러의 테이퍼형 연소기
KR101658559B1 (ko) * 2015-04-06 2016-09-21 김종락 펠렛난로
CN205102178U (zh) * 2015-10-30 2016-03-23 王利军 节能家用炉灶

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3492814A1 (de) 2019-06-05
ES2899173T3 (es) 2022-03-10

Similar Documents

Publication Publication Date Title
EP3492814B1 (de) Biomasseoven mit gesenkten emissionen
CN103134086B (zh) 具有三次助燃结构的生物质炉
RU132530U1 (ru) Твердотопливный котел длительного горения
EP3765792B1 (de) Festbrennstoffheizer mit drei-zonen-verbrennungsluftzufuhr
KR101527682B1 (ko) 고효율 친환경 펠렛 난로
CN101956999B (zh) 生物质直燃炉
US8161959B1 (en) Wood burning furnace
CN201547818U (zh) 进风可调式生物质气化炉
CN110762557A (zh) 一种燃煤炉具
CN203177231U (zh) 具有三次助燃结构的生物质炉
CN206572512U (zh) 一种高身炉头
CN205690387U (zh) 应用于全预混锅炉的烟气回流装置及全预混锅炉
CN201462915U (zh) 生物质半气化炉
CN204757018U (zh) 一种民用气化燃烧炊事取暖炉
CN208418705U (zh) 一种热解装置
CN220338492U (zh) 一种自吸式空氧混合器
CN204739624U (zh) 单侧进气生物质炉
CN205481140U (zh) 一种燃烧炉
CN218237466U (zh) 一种垃圾焚烧系统
CN211977242U (zh) 燃气热水设备
CN218884017U (zh) 一种家用锅炉
CN213901049U (zh) 带预燃室采用低温烟气循环的煤粉低氮燃烧器及煤粉锅炉
CN212339302U (zh) 一种取暖用生物质燃料炉
CN111981520B (zh) 灶具、灶具的控制方法和存储介质
CN212746939U (zh) 一种燃气热水器五排燃烧器

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191106

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200331

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RIC1 Information provided on ipc code assigned before grant

Ipc: F24B 1/02 20060101AFI20210218BHEP

Ipc: F23G 7/10 20060101ALI20210218BHEP

Ipc: F23B 80/02 20060101ALI20210218BHEP

Ipc: F23B 50/10 20060101ALI20210218BHEP

Ipc: F24B 5/02 20060101ALI20210218BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210430

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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

Ref country code: AT

Ref legal event code: REF

Ref document number: 1424176

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018022323

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210825

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1424176

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210825

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

Ref country code: RS

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: 20210825

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: 20210825

Ref country code: HR

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: 20210825

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: 20210825

Ref country code: NO

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: 20211125

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: 20211227

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: 20211125

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: 20210825

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: 20210825

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

Ref country code: FR

Payment date: 20211117

Year of fee payment: 4

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

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: 20210825

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: 20210825

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: 20211126

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

Ref country code: BE

Payment date: 20211123

Year of fee payment: 4

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2899173

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20220310

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

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: 20210825

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: 20210825

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018022323

Country of ref document: DE

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

Ref country code: SM

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: 20210825

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: 20210825

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: 20210825

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: 20210825

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: 20210825

Ref country code: AL

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: 20210825

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

Ref country code: IT

Payment date: 20211231

Year of fee payment: 4

Ref country code: ES

Payment date: 20220126

Year of fee payment: 4

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602018022323

Country of ref document: DE

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: 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: 20210825

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20220527

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: 20210825

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

Ref country code: LU

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

Effective date: 20211203

Ref country code: IE

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

Effective date: 20211203

Ref country code: DE

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

Effective date: 20220701

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

Ref country code: LI

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

Effective date: 20211231

Ref country code: CH

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

Effective date: 20211231

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: 20210825

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

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: 20181203

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

Effective date: 20221203

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221231

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: 20221203

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: 20221231

Ref country code: BE

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

Effective date: 20221231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240126

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: 20221203

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

Ref country code: ES

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

Effective date: 20221204

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

Ref country code: MK

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: 20210825

Ref country code: ES

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

Effective date: 20221204