EP2530386A1 - Foyer d'une cheminée - Google Patents

Foyer d'une cheminée Download PDF

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Publication number
EP2530386A1
EP2530386A1 EP12004159A EP12004159A EP2530386A1 EP 2530386 A1 EP2530386 A1 EP 2530386A1 EP 12004159 A EP12004159 A EP 12004159A EP 12004159 A EP12004159 A EP 12004159A EP 2530386 A1 EP2530386 A1 EP 2530386A1
Authority
EP
European Patent Office
Prior art keywords
catalytically active
combustion chamber
filter element
fireplace
hot gases
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Withdrawn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
EP12004159A
Other languages
German (de)
English (en)
Inventor
Andreas Schreier
Andreas Klein
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.)
Hark & Co KG Kamin- und Kachelofenbau GmbH
Original Assignee
Hark & Co KG Kamin- und Kachelofenbau GmbH
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 Hark & Co KG Kamin- und Kachelofenbau GmbH filed Critical Hark & Co KG Kamin- und Kachelofenbau GmbH
Publication of EP2530386A1 publication Critical patent/EP2530386A1/fr
Withdrawn legal-status Critical Current

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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
    • F24B1/006—Stoves or ranges incorporating a catalytic combustor

Definitions

  • the invention relates to a fireplace hearth, comprising a combustion chamber with an openable door, a chimney connection to supply the hot gases from the combustion chamber through the chimney connection a fireplace and with a Schugasraum, in the flow direction of the hot gases between at least partially through which the hot gases filter element at the top , in particular rearward region of the combustion chamber and the chimney connection is arranged.
  • Such fireplace hearths are in the art, for example, from the publications DE 20 2009 014 002 and EP 1 353 125 known.
  • In these chimney fire places come as a filter in the upper, eg rear area of the combustion chamber, for example, plates of a ceramic foam used, which are at least partially, if necessary. Also flows through the hot gases generated in the combustion chamber.
  • the object of the invention is therefore to develop a fireplace fire of the type mentioned in such a way that a further improvement of the exhaust gas values, in particular with respect to the gaseous components can be achieved with consistently low or even reduced particulate matter in the exhaust gases compared to the known fireplace fire.
  • this object is achieved in that at a fireplace fire of the type mentioned in Schugasraum, ie between the filter element, which is at least partially flows through the combustion chamber leaving the fuel gases and the chimney connection, which leads into the chimney, in the flow path of the heating gases on the hot gases catalytically active element is arranged.
  • the flow path is understood to mean that path through which the heating gases flow from the combustion chamber in the direction of the chimney connection in order to be supplied from there to a chimney / chimney.
  • the heating gas space is that space which, as mentioned at the beginning, is arranged between the combustion chamber and the chimney connection, through which therefore the flow path of the heating gases leads.
  • such a heating gas space can be located substantially in the rear upper region relative to the combustion chamber.
  • at least the essential volume fraction of the heating gas space is formed, but it may also extend with a smaller volume fraction downstream of the combustion chamber and / or above the combustion chamber. It can also be provided that an air supply duct is guided by this significant volume fraction of the heating gas space.
  • this Schusterraum represents a direct connection between the combustion chamber and chimney connection or makes a certain desired guidance of the hot gases, e.g. in that the heating gas space is divided into several trains, e.g. is divided at least one falling and one rising train, so the hot gases, e.g. meandering down and up leads, if necessary. Also several times, until the hot gases reach the chimney connection.
  • the above-mentioned and known in the art filter element such as a foam ceramic plate can be operated in an optimal post-combustion temperature range, which is achieved for example by the fact that this filter element is exposed in operation directly to the flame and the radiant heat of the burning fire and so in Operation is heated to very high temperatures, which achieve optimum afterburning, but would be too high for catalyst materials.
  • a filter element through which at least a part of the heating gases leaves the combustion chamber and passes into the heating gas chamber, for example, also reach a glowing state during operation.
  • At least one catalytically active element is now provided in the flow path after said filter element in the heating gas space, which is thus arranged in a region in which the temperature has decreased relative to the temperature of the aforementioned filter element.
  • the arrangement is selected such that the catalytically active element does not exceed the aging temperature of the catalyst material used during operation of the fireplace hearth, e.g. that is, does not exceed 1000 degrees Celsius, but in particular is still heated to the optimum working temperature of the catalyst material, e.g. 800-900 degrees Celsius or at least up to the light-off temperature.
  • aging temperature is understood to mean the temperature above which a catalyst is damaged in continuous operation, e.g. by sintering or melting processes.
  • the light-off temperature is the temperature at which a catalyst material triggers a chemical reaction, in particular e.g. at least 250 degrees.
  • temperatures may be dependent on the particular catalyst materials used.
  • catalyst materials chromium, palladium, platinum, rhodium or other noble metals or other suitable materials, both in pure form as well as a mixture in a certain desired mixing ratio.
  • the formation of the catalytically active coating as a layer of nano-particles can also be provided.
  • the catalytically active element is designed as a baffle plate, which is arranged in the heating gas space in the flow path of the heating gases and at the catalytically coated surface, the hot gases flow past and are treated so catalytically.
  • the catalytically active element may also be formed as a second filter, in particular a second filter plate with a catalytically active coating, which is at least partially flowed through by the heating gases. It may be in such a filter, e.g. to act a foam ceramic plate, which is catalytically coated.
  • this second filter may be identical to the aforementioned filter, apart from an additional subsequently applied catalytic coating.
  • the second filter plate is made in the same process as the first mentioned filter element.
  • baffle plate or second filter element which are each coated catalytically, not only one may be provided in the flow path, but if necessary.
  • baffle plate or second filter element which are each coated catalytically, not only one may be provided in the flow path, but if necessary.
  • baffle plate or second filter element which are each coated catalytically, not only one may be provided in the flow path, but if necessary.
  • baffle plate or second filter element which are each coated catalytically
  • the catalytically active elements following one another in the flow direction are coated with different catalytically active materials, in particular those which catalytically convert the various gas constituents and / or whose optimum operating temperature range and / or light-off temperature are different from each other, in particular decreases in the flow direction ,
  • the catalytically active element in the flow direction of the hot gases within the Schugasraumes before or behind or in both arrangements i. is arranged both before and behind an air supply duct, by means of the fresh combustion air can be fed into the heating gas chamber.
  • the air supply can also reduce the temperature to a level which is harmless for catalytic materials, as described above.
  • the air supply channel is at least partially disposed above the combustion chamber and a catalytically active element is disposed at least below the air supply duct.
  • a catalytically active element is disposed at least below the air supply duct.
  • Such an arrangement may be particularly preferably provided at a distance below the air supply duct, e.g. by hanging the element to the air supply duct, e.g. as a baffle plate with a overflowed by the hot gases coating or as a flow-through catalytically active filter element.
  • the guided air is not conducted into the heating gas space through the air supply duct, but past it, e.g. to a dishwashing.
  • the guided air in this case only absorbs heat from the heating gas space and carries preheated air, e.g. for disc rinsing.
  • the temperature in the heating gas space is only slightly reduced to an ideal for catalytically active materials temperature level.
  • the construction according to the invention described here or arrangement of at least one catalytically active element in the heating gas space can be provided with basically any other construction of a fireplace with a combustion chamber.
  • combustion chambers with limiting wall areas made of refractory materials, such as fireclay or vermiculite or ceramic, such combustion chambers may have in a conventional manner an upper and preferably rearwardly oriented outlet opening for the withdrawal of the heating gases from the combustion chamber, here at least in part or completely by a filter element permeable to hot gases, eg a foam ceramic plate is closed.
  • a filter element permeable to hot gases eg a foam ceramic plate is closed.
  • the catalytically active coating of the elements used according to the invention may in particular be chosen such that hydrocarbons are catalytically converted to harmless gas constituents.
  • FIG. 1 shows in a sectional side view as an overview of a fireplace hearth 1 according to the invention with a combustion air supply 2, which is realized by a lower Feuerraummulde 3 through, with the limited down through the Feuerraummulde 3 combustion chamber 4 laterally, backwards and upwards by refractory bricks or plates 4a (lateral plates), 4b (lateral rear plates), 4c (rear back plate), 4d (upper plate) and 4e (upper rear plate for fuel gas continuous plate).
  • refractory bricks or plates 4a lateral plates
  • 4b lateral rear plates
  • 4c rear plate
  • 4d upper plate
  • 4e upper rear plate for fuel gas continuous plate
  • the plate 4e is here e.g. formed by a continuous flow of hot gas foam ceramic plate preferably without catalytically active coating.
  • the filter 4e thus formed is completely traversed by the hot gases, but it may be provided only a partial flow, for. if the filter element 4e does not completely close the passage opening from the combustion chamber 4 to the heating gas chamber 5 or has a bypass-like recess.
  • the combustion chamber 4 is closed by an openable door, not shown here, which may have a glass pane, for example, so that the fire can be observed by persons.
  • the geometry of the combustion chamber 4 shown here is only to be understood as an example and does not otherwise limit the invention. Any kind of combustion chamber geometry is possible.
  • an air supply duct 7 is provided, which in this embodiment extends essentially horizontally from the rear to the front and also carries combustion air in this direction, and, for example, in this direction. may have a rear portion with a constant, substantially rectangular cross-section which widens in a front portion 7a and opens into a gap 8, so that air flowing through the air supply channel 7 may be provided at the front gap 8 for a door air purge.
  • the channel 7, in particular here only about 25% of the total width of the Schugasraumes 5 is wide, laterally, ie left and flow around right from the direction of the door.
  • the air also supplied into the heating gas chamber through the channel 7 and leaving the openings 14 may assist the post-combustion process.
  • FIG. 1 shows here that in the heating gas chamber 5, which is located in the flow path between the combustion chamber 4 and the chimney port 6, a catalytically acting coated baffle plate 9 is arranged at a distance below the air supply duct 7.
  • the catalytically acting baffle plate 9 is arranged with its rear end face 9a near the rear wall of the heating gas chamber 5, so that there is only a slight distance between the rear end face 9a and said wall for passing or flowing around the heating gases around the plate 9 , It is therefore apparent that here mainly a flow around the baffle plate 9 takes place at the front end surface 9b as well as on the side surfaces 9c.
  • the figure further shows that above the air supply duct 7 another, e.g. also catalytically coated baffle plate 13 may be arranged, the loose, but guided in bolts 16, rests on the air supply duct 7.
  • another e.g. also catalytically coated baffle plate 13 may be arranged, the loose, but guided in bolts 16, rests on the air supply duct 7.
  • the upper baffle plate 13 protrudes on the right and left side over the channel 7 over as the lower baffle plate 9.
  • the baffle plate 13 is arranged so that the plate 13 with its front end face 13a directly against a limiting wall 5a of the heating gas chamber 5, however forms a uniform distance to the rear and the two lateral boundary surfaces, so that here essentially results through the upper baffle plate 13, a U-shaped flow cross-section for the hot gases, ie the hot gases flow around here the baffle plate 13 only laterally and on the rear end face 13b.
  • the lower baffle plate 9 Due to the fact that the lower baffle plate 9 is flowed around mainly on the front end face and laterally, it follows accordingly with reference to the FIG. 1 by the installation of the baffles 9 and 13, a flow path, the is substantially S-shaped with respect to a main component of the flow, namely past the front edge of the lower baffle plate 9, then between the baffles 9 and 13 from front to back and in the further course up to the rear end face 13b of the upper baffle plate over. Another component of the flow is the side of the baffles over.
  • baffle plates instead of the flow around baffle plates, it can also be provided to arrange behind the filter element 4e, which has no catalytically active coating, at least a second filter element, which has a catalytically active coating and also at least a portion of the heating gas flows through it.
  • the catalytic treatment would not take place with a surface flow past, but with a flow through the at least one second filter element.
  • Such a filter element with a catalytically active coating can e.g. be arranged behind the filter element 4e at a distance and in an orientation, so that both filter elements are parallel.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)
  • Incineration Of Waste (AREA)
EP12004159A 2011-05-31 2012-05-30 Foyer d'une cheminée Withdrawn EP2530386A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011101621U DE202011101621U1 (de) 2011-05-31 2011-05-31 Kaminfeuerstelle

Publications (1)

Publication Number Publication Date
EP2530386A1 true EP2530386A1 (fr) 2012-12-05

Family

ID=45020460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004159A Withdrawn EP2530386A1 (fr) 2011-05-31 2012-05-30 Foyer d'une cheminée

Country Status (2)

Country Link
EP (1) EP2530386A1 (fr)
DE (1) DE202011101621U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3008383A1 (fr) * 2013-06-12 2016-04-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Petite installation de chauffe dotée d'un équipement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015115933A1 (de) * 2015-09-21 2017-03-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Behandlung von Abgasen in Einzelraumfeuerungsanlagen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844051A (en) * 1987-06-11 1989-07-04 Horkey Edward J Fuel burning appliance incorporating catalytic combustor
EP1353125A1 (fr) 2002-04-03 2003-10-15 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Appareil et méthode pour traiter les fumées de foyers à combustible solide
DE202007017100U1 (de) * 2007-12-05 2008-02-28 Wodtke Gmbh Abgasreinigungsanordnung
DE202009014002U1 (de) 2009-10-15 2010-03-04 Hark Gmbh & Co Kg Kamin- U. Kachelofenbau Feuerstätte mit Reinigungselement zur Rauchgasreinigung
EP2166287A2 (fr) * 2008-12-24 2010-03-24 KAGO-Kamine-Kachelofen GmbH & Co. Deutsche Wärmesysteme KG Foyer de carburant solide pour bâtiments ainsi que pour des tels foyers de carburant solide
DE202010014241U1 (de) * 2010-10-14 2011-02-17 Hark Gmbh & Co Kg Kamin- U. Kachelofenbau Feuerstätte mit Schüttgut-Partikelfilter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4844051A (en) * 1987-06-11 1989-07-04 Horkey Edward J Fuel burning appliance incorporating catalytic combustor
EP1353125A1 (fr) 2002-04-03 2003-10-15 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Appareil et méthode pour traiter les fumées de foyers à combustible solide
DE202007017100U1 (de) * 2007-12-05 2008-02-28 Wodtke Gmbh Abgasreinigungsanordnung
EP2166287A2 (fr) * 2008-12-24 2010-03-24 KAGO-Kamine-Kachelofen GmbH & Co. Deutsche Wärmesysteme KG Foyer de carburant solide pour bâtiments ainsi que pour des tels foyers de carburant solide
DE202009014002U1 (de) 2009-10-15 2010-03-04 Hark Gmbh & Co Kg Kamin- U. Kachelofenbau Feuerstätte mit Reinigungselement zur Rauchgasreinigung
DE202010014241U1 (de) * 2010-10-14 2011-02-17 Hark Gmbh & Co Kg Kamin- U. Kachelofenbau Feuerstätte mit Schüttgut-Partikelfilter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3008383A1 (fr) * 2013-06-12 2016-04-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Petite installation de chauffe dotée d'un équipement

Also Published As

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