EP2370732A2 - Rauchgasbox für ein festbrennstoff verwendendes haushaltsheizgerät - Google Patents

Rauchgasbox für ein festbrennstoff verwendendes haushaltsheizgerät

Info

Publication number
EP2370732A2
EP2370732A2 EP09803783A EP09803783A EP2370732A2 EP 2370732 A2 EP2370732 A2 EP 2370732A2 EP 09803783 A EP09803783 A EP 09803783A EP 09803783 A EP09803783 A EP 09803783A EP 2370732 A2 EP2370732 A2 EP 2370732A2
Authority
EP
European Patent Office
Prior art keywords
flue gas
gas box
box according
wall
catalyst
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.)
Granted
Application number
EP09803783A
Other languages
English (en)
French (fr)
Other versions
EP2370732B1 (de
Inventor
Frédéric HAAS
Fabien Ozil
Gwennaelle Trouve
Valérie TSCHAMBER
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.)
Fondis SA
Original Assignee
Fondis SA
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 Fondis SA filed Critical Fondis SA
Publication of EP2370732A2 publication Critical patent/EP2370732A2/de
Application granted granted Critical
Publication of EP2370732B1 publication Critical patent/EP2370732B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 present invention is in the field of domestic combustion heaters.
  • Solid fuels such as wood are known to release gaseous pollutants, and particulates and micropoussines, these various compounds found in the fumes.
  • the body of the catalyst being conventionally placed at the outlet of the flue gases from the furnace in the birth of the connection duct or Beyond this, the temperature of the combustion gases and fumes is in certain phases and in particular the intermediate phases, being insufficient to trigger and maintain the catalytic reaction.
  • the present invention has the triple purpose of first ensuring a longer operation of the catalyst, at least as long as possible even when the fire is at reduced speed or when it has just started, or is s' extinguish, then have a good purification performance and finally make the cleaning and sweeping operations as fast and easy as possible.
  • the invention relates to a fume box simultaneously providing the functions of purifier and heat exchanger in which is placed a partition wall having off-center with respect to the inlet and the outlet of the the fume box the body of a catalyst with an inner face that can be heated, the part towards the front of the partition wall being occupied by a removable plate for access to the upper compartment and the birth of the connection duct to the discharge, the smoke box being provided with a lower deflector of fumes and a lower deflector close to the outlet, the body of the fume box having dissipators in the form for example of fins, to transmit the air heat between the metal walls of the smoke box and those of the double jacket of the heater body.
  • FIG. 1 is a diagrammatic cross-sectional view of a hearth surmounted by the smoke box according to the invention
  • FIG. 2 is a schematic longitudinal sectional view of a fireplace topped with the flue gas box according to the invention, cut through the catalyst block,.
  • FIG. 3 is a perspective view of the catalyst block as a whole,
  • Figure 4 is a large scale view of the circled portion of Figure 3 showing the internal structure of the catalyst block.
  • the present invention relates to a smoke box 1 mounted above the firebox 2 of a heater 3 including, but not limited to, wood 4 and front glass door 5.
  • This heater preferably comprises, but not exclusively , an outer envelope 6 for recovering heated air in front of the side walls of the fireplace and those of the smoke box.
  • This envelope delimits with said sidewalls a thin convection volume 7 along which the air, admitted in the lower part, is warmed up to leave the upper part by mouths or be distributed beyond the home by ducts a Vogellic. These mouths and sheaths are not shown.
  • the flue gas box 1 opens upwards through an upper outlet 8 in the form of an outlet orifice on an outlet duct 9 conventionally called a connecting duct for the evacuation of combustion gases and fumes.
  • the flue gas box 1 is an almost closed volume with a lower inlet 10 for the passage of flue gases and fumes from the furnace and at the upper outlet 8. These flue gases and fumes exit the flue gas box after passing through a catalyst. .
  • the latter consists of two successive compartments juxtaposed, separated by a wall containing the catalyst through which the flue gases and fumes pass during the continuous operation in heating the wood burning appliance.
  • the smoke box has a lower wall 11, slightly inclined rising towards its lower inlet 10 over most of its width. This bottom wall 11 ends below the front side wall 12 of the fume box to leave a free longitudinal space which forms a longitudinal inlet opening 13 constituting the lower inlet 10 through which the combustion gases and fumes exiting the fireplace are allowed in the smoke box.
  • This longitudinal inlet opening 13 constituting the inlet passage in the smoke box is located in the lower part, but at the front of the smoke box, that is to say deported relative to the center of its interior volume towards the front of the heater. In the example shown, this longitudinal inlet opening 13 extends along the wall front side 12 of the smoke box.
  • the bottom wall 11 of the smoke box acts as the upper wall of the hearth.
  • the rising inclination towards the opening 13 of this bottom wall 11 and the offset position of the longitudinal inlet opening 13 are intended to slow down the fumes, to increase their path, to promote heat exchange and to protect the catalyst of the flames of the hearth.
  • the flue gas box has side walls 14, for example provided with external heat sinks, for example in the form of fins 15.
  • the smoke box 1 is composed of two compartments, a lower compartment whose lower part is closed by the inclined lower wall 11 and an upper compartment opening through the upper outlet 8 in the outlet duct 9.
  • the smoke box is divided into two compartments by a partition wall 16 in which is inserted a catalyst block 17. It is a lower expansion compartment 18 and an upper discharge compartment 19.
  • the location of the catalyst block 17 is remote to the rear wall 20 of the flue gas box to be in proximity thereto so as to lengthen the path of the flue gases and fumes and to decenter the catalyst 17 from the zone immediately below the orifice output 8.
  • the partition wall 16 has two parts: a front portion 21 with a releasable access and a rear portion 22 receiving the catalyst.
  • At least the rear portion 22 is made of metal, thick and mass, for example cast iron so as to benefit from a significant thermal inertia making it possible to maintain the body of the catalyst 17 longer at its operating temperature.
  • the maintenance is carried out for example, by an opening with or without a frame that receives the catalyst block 17 removably mounted in this opening or frame, so that it can be easily removed for cleaning and if necessary to his replacement.
  • the front portion 21 of the partition wall 16, which is preferably made of metal, is constituted so as to detachably receive at least one, but preferably two, thick and thermally insulating blocks such as 23, making it possible, by a strong thermal insulation, to maintain a temperature. raised in the lower compartment 18 of the smoke box and also to allow to free an access passage for sweeping and maintenance.
  • This or these removable blocks (s) form (s) an access door easily openable and closable for cleaning the smoke box.
  • the rear portion receiving the catalyst block 17 is made of metal, for example cast iron, forming a heat storage block, allowing additional temperature maintenance of the catalyst block 17 in order to extend its operating time during heating and so to obtain extended periods of purification of gases and combustion fumes.
  • the catalyst block 17 is also off-center with respect to the outlet 8 of the flue gas box.
  • a deflector 24 in the form of an inclined plate protruding from the outlet 8 of the smoke box.
  • This deflector 24 is inclined downwards and directed towards the front wall 12 of the smoke box. It forms a baffle between the upper face of the catalyst block and the outlet 8. As an auxiliary function, it deflects the soot and deposits that may fall out of the outlet duct 9, during operation of the heater and during the sweeping.
  • the front portion of the partition wall 16 carries the one or two removable insulating blocks such as 23 which close the access opening to the upper compartment so as to facilitate the cleaning and replacement of parts, especially the catalyst block 17
  • the catalyst block 17 can affect different shapes of section: circular, rectangular, square.
  • a parallelepipedic block such as that represented in FIG. 3 is preferred. It is a catalyst of the multi-channel metal type formed by the succession of parallel longitudinal walls 26 and 27, together being delimited by a frame 28.
  • the parallel metal walls 26 and 27 made of thin sheet metal are interconnected by a connecting structure 29 shaped in waves, for example corrugated sheet 30, each of whose peaks in edges such as 31 waves is successively secured to one then to the other parallel wall 26 and 27 thus delimiting the juxtaposed parallel channels 25 having a sinusoidal section and a flat base.
  • a connecting structure 29 shaped in waves, for example corrugated sheet 30, each of whose peaks in edges such as 31 waves is successively secured to one then to the other parallel wall 26 and 27 thus delimiting the juxtaposed parallel channels 25 having a sinusoidal section and a flat base.
  • a catalytic material generating a catalytic reaction with the unburnt gases of combustion in the furnace.
  • There is a real afterburner raising the temperature of the catalyst body allowing the oxidation of the incomplete combustion gas residues which can even go as far as the calcination or incineration of the solid and microporous particles contained in the fumes.
  • This or these resistor (s) 32 are carried by a support 33 and placed (s) near the inlet face 34 of the catalyst 17. It will be disposed of as much as necessary to obtain each time, the additional temperature sufficient to the initialization or the continuation of the catalysis reaction even at the start of the fire, when it is extinguished or at reduced speed. This momentary, but almost instantaneous and significant rise in temperature allows the catalyst to start almost immediately after the fire is born, that is to say the production of fumes.
  • the fume box according to the invention may comprise at the front, as in the example shown, a block or compartment or decorative front box or heat accumulator. In the latter case, the operation of the catalyst is further improved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Details Of Fluid Heaters (AREA)
  • Incineration Of Waste (AREA)
EP09803783.1A 2008-12-17 2009-12-17 Festbrennstoff verwendendes haushaltsheizgerät mit einer rauchgasbox Active EP2370732B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0807094A FR2939870B1 (fr) 2008-12-17 2008-12-17 Boite a fumees pour un appareil de chauffage domestique a combustible solide
PCT/FR2009/001431 WO2010076417A2 (fr) 2008-12-17 2009-12-17 Boite a fumees pour un appareil de chauffage domestique a combustible solide

Publications (2)

Publication Number Publication Date
EP2370732A2 true EP2370732A2 (de) 2011-10-05
EP2370732B1 EP2370732B1 (de) 2018-09-26

Family

ID=40909750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09803783.1A Active EP2370732B1 (de) 2008-12-17 2009-12-17 Festbrennstoff verwendendes haushaltsheizgerät mit einer rauchgasbox

Country Status (5)

Country Link
US (1) US8646441B2 (de)
EP (1) EP2370732B1 (de)
CA (1) CA2747103A1 (de)
FR (1) FR2939870B1 (de)
WO (1) WO2010076417A2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101478A1 (it) * 2010-08-03 2012-02-04 Sms Concast Italia Spa Cappa per l'aspirazione di fumi prodotti in un ambiente metallurgico ed edificio dotato di tale cappa
US8812162B2 (en) 2010-11-05 2014-08-19 Clearstak Llc Intelligently-controlled catalytic converter for biofuel-fired boiler
EP2455666A1 (de) * 2010-11-17 2012-05-23 József Simkó Kaminofen mit verbessertem Wirkungsgrad
CN102192527A (zh) * 2011-05-25 2011-09-21 浙江工业大学 节能环保煤球炉
DK177552B1 (en) * 2012-04-27 2013-10-07 Skamol As Catalytic unit for solid fuel burning stoves
EP3044513B1 (de) 2013-09-13 2019-11-27 Biomass Controls PBC Brennstoffzufuhr- und luftzufuhrsteuerung für mit biokraftstoff befeuerten ofen
WO2015138800A1 (en) 2014-03-12 2015-09-17 Hallowell Jeffrey R Combined heat, power, and biochar with ventilator
PL3535522T3 (pl) 2016-11-01 2023-09-25 Jøtul As Urządzenie wspomagane katalizatorem i nieposiadające możliwości obejścia
DE202017001335U1 (de) * 2017-03-14 2017-05-10 Spartherm Feuerungstechnik Gmbh Feuerstätte

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US38361A (en) * 1863-04-28 Improvement in stoves
US3802397A (en) * 1969-02-05 1974-04-09 Nat Steel Construction Co Water heater and method of constructing the same
US3964943A (en) * 1974-02-12 1976-06-22 Danfoss A/S Method of producing electrical resistor
US4319556A (en) * 1981-03-09 1982-03-16 Jamestown Group Catalytic stove
US4479921A (en) * 1982-04-15 1984-10-30 Corning Glass Works Solid fuel heating appliance and combustor apparatus therefor
US4502462A (en) * 1982-11-12 1985-03-05 Brent Lawrence Wood stove
US4582044A (en) * 1984-01-19 1986-04-15 Vermont Castings, Inc. Clean burning exterior retrofit system for solid fuel heating appliances
US4611572A (en) * 1984-07-31 1986-09-16 Martenson Donald S Low emission stove
BE1000352A7 (fr) * 1987-03-03 1988-11-08 Lion Sa Fonderies Foyer, en particulier poele a bois, equipe d'un dispositif capable de neutraliser les elements polluants des gaz brules.
US4844051A (en) * 1987-06-11 1989-07-04 Horkey Edward J Fuel burning appliance incorporating catalytic combustor
US5320086A (en) * 1993-02-16 1994-06-14 Majco Building Specialties, L.P. Direct vent gas appliance with vertical and horizontal venting
US6216687B1 (en) * 1996-03-22 2001-04-17 The Majestic Products Company Unvented heating appliance having system for reducing undesirable combustion products
US6067979A (en) * 1998-08-04 2000-05-30 Dennis Jaasma Combustion system
EP1426691A1 (de) * 2002-11-20 2004-06-09 Thermic Investments S.A. Heizgerät mit hohem Wirkungsgrad
US7360506B2 (en) * 2006-02-13 2008-04-22 American Water Heater Company Low CO water heater

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Also Published As

Publication number Publication date
CA2747103A1 (fr) 2010-07-08
EP2370732B1 (de) 2018-09-26
US8646441B2 (en) 2014-02-11
US20110247533A1 (en) 2011-10-13
WO2010076417A2 (fr) 2010-07-08
FR2939870A1 (fr) 2010-06-18
FR2939870B1 (fr) 2013-06-07
WO2010076417A3 (fr) 2010-10-07

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