EP0520913B1 - Heizung mit katalytischem Brenner - Google Patents

Heizung mit katalytischem Brenner Download PDF

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Publication number
EP0520913B1
EP0520913B1 EP92420204A EP92420204A EP0520913B1 EP 0520913 B1 EP0520913 B1 EP 0520913B1 EP 92420204 A EP92420204 A EP 92420204A EP 92420204 A EP92420204 A EP 92420204A EP 0520913 B1 EP0520913 B1 EP 0520913B1
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EP
European Patent Office
Prior art keywords
catalytic
combustion
thermal
face
upstream
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.)
Expired - Lifetime
Application number
EP92420204A
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English (en)
French (fr)
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EP0520913A1 (de
Inventor
Jean-Jacques Thibault
Hervé Bouvard
Daniel Demillière-Vergnais
Jean-Claude Pivot
Nino Urbano
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Application des Gaz SA
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Application des Gaz SA
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Application filed by Application des Gaz SA filed Critical Application des Gaz SA
Publication of EP0520913A1 publication Critical patent/EP0520913A1/de
Application granted granted Critical
Publication of EP0520913B1 publication Critical patent/EP0520913B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/18—Radiant burners using catalysis for flameless combustion

Definitions

  • the present invention relates to a heating device with a catalytic burner.
  • cooler any device, portable or not, integrating or connected to a source of combustible gas, using the heat of combustion produced by the catalytic burner for different purposes, such as cooking, heating, welding, generation of hot air, crimping of the hair, etc., and possibly comprising other elements or members allowing the use of said device for the chosen end or destination, for example a soldering failure, if the use selected for the device is welding.
  • Catalytic burner means any assembly making it possible to burn a combustible gas, by mixing the latter with so-called primary air, upstream of a catalytic structure, flameless combustion of said mixture during its passage through the catalytic structure, and evacuation of combustion fumes by the downstream face of this same structure.
  • a burner according to the invention known as "induced air”
  • secondary air catalytic burners, for which the combustible gas passes directly through the catalytic structure, and is burnt without flame on the face downstream of said catalytic structure, by mixing with ambient air.
  • catalytic structure or “catalytic combustion structure” is meant any structure permeable to the mixture to be burned, and sufficiently thick to generate a pressure drop during the passage of said mixture, from the upstream face to the downstream face of said structure.
  • This structure extends on the surface transversely or perpendicular to the direction of passage of the mixture to be burned.
  • This structure comprises a support which is inert with respect to the mixture to be burned, combustible gas, and combustion gases, and which is mechanically resistant to the high temperatures generated by catalytic combustion.
  • This support is coated, at least on its internal surface or surfaces, directly or indirectly, with an actual catalytic material, such as platinum or platinum salts, catalyzing combustion.
  • the catalytic structures consisting of a slice or a core of a refractory material such as ceramic, crossed by a plurality of adjacent transverse channels, and on the other hand structures of the tissue or catalytic sieve type.
  • Induced air catalytic burners are characterized by a high specific calorific power, that is to say per unit area, between 10 and 100 W / cm2.
  • a high specific calorific power that is to say per unit area, between 10 and 100 W / cm2.
  • Such a high specific power does not pose too many problems, as long as the surface of the catalytic structure remains relatively small. This power becomes an obstacle, as soon as one exceeds a certain surface of the catalytic structure, due to the significant heating observed on the device.
  • Such heating can be easily explained for a circular or cylindrical catalytic structure, having a constant thickness, by the fact that the calorific power obtained increases with the square of the diameter, while the exchange surface of the burner with the walls and the receiver thermal consuming combustion heat increases with diameter.
  • the device heats up mainly upstream of the catalytic structure, because in fact, in the thickness of the latter and in the direction of passage of the mixture to be burned, there is a radiant front of combustion without flames, nearby immediately upstream of said catalytic structure. And the rest of the thickness of the catalytic structure only serves to complete the combustion and evacuate the fumes.
  • the thermal receiver extends opposite the upstream face (and not downstream face) of the catalytic structure, along practically the entire surface of the latter, so as to receive the radiated thermal energy emitted by the radiant front of combustion of the catalytic structure in operation.
  • the receiver is chosen, arranged, or constructed to dissipate, on the side opposite the upstream face of the catalytic structure, at least 30% of the thermal energy received by radiation from the radiating front.
  • the thermal receptor is an element in vitro-ceramic.
  • the mixture to be burned being introduced into the burner, by the downstream side of the catalytic structure, is only in thermal relation with the upstream face of the latter at the last moment, that is to say just before its combustion; under these conditions, the mixture to be burned is at a relatively lower temperature in the distribution chamber, which significantly reduces the catches of fire upstream of the catalytic structure.
  • the thermal receiver is arranged opposite the most radiant side, that is to say the upstream side, so a heating device according to the invention has a good combustion efficiency.
  • the solution according to the invention makes it possible both to reduce the risk of catching fire upstream of the catalytic structure, and to increase the efficiency of the catalytic burner, which is never encountered for a catalytic burner classic induced air.
  • a thermal receptor made of a ceramic-ceramic material completely meets these requirements, but also a metal plate blackened on both sides.
  • a preferential version still has the following technical characteristics.
  • a combustion smoke deflector is arranged opposite the downstream face of the catalytic structure, to return said smoke from the upstream side of said structure, outside the combustion chamber. distribution.
  • a heating device dissipates about a good third of the heat produced by catalytic combustion by convection, that is to say in combustion fumes. Consequently, the return of the fumes in direction of use, that is to say on the external side of the thermal receiver, makes it possible to improve the efficiency of the heating appliance, in significant proportions; this appears particularly important for a heating appliance of the cooking stove type.
  • Another preferred embodiment also presents the following means making it possible to improve the efficiency of a heating appliance according to the invention.
  • the combustion smoke deflector is thermally insulated, not only to limit the outside temperature of the walls of the heater, but also to lose the least sensible heat in the combustion smoke.
  • the heater can include heat exchange means, for example fins, between, on one side inside the distribution chamber, and on the other side the combustion fumes returned to the upstream side of the catalytic structure, generally cooler.
  • heat exchange means for example fins
  • This means not only improves the overall efficiency of the heating device, but also cools the distribution chamber, which limits the possibilities of catching fire upstream of the catalytic structure.
  • the cooling of the distribution chamber it is significant, since the life of the catalytic structure is almost doubled with heat exchange fins, all other things being equal.
  • the heating appliance shown in FIGS. 1 and 2 generally comprises, on the one hand, a catalytic burner 1, more particularly described below, and a thermal receiver 2, constituted by a circular wafer of a vitro-ceramic, this receiver consuming at least part of the heat generated by the catalytic burner 1, and being arranged to receive a thermal load on its external face 2b, for example a container in which cooking is carried out.
  • the assembly described above is arranged vertically, the thermal receiver 2 is placed above the catalytic burner 1, and the gas circulation takes place vertically, from top to bottom, then from bottom to top as described below; and the thermal receiver 2 is arranged substantially horizontally.
  • the thermal receiver 2 in relation to the catalytic combustion front 10 inside and near the upstream face 6a of the catalytic structure 6, the thermal receiver 2 extends opposite the upstream face 6a above, along virtually the entire surface of the latter, so as to receive the radiated thermal energy emitted by the radiant front of combustion of the catalytic structure in operation.
  • a deflector 8 of the combustion fumes leaving the downstream face 6b of the catalytic structure 6 is disposed opposite and at a distance of this downstream face.
  • This deflector 8 by its shape shown by way of example in FIG. 1, associating from the inside towards the outside a conical part 8a directed downwards and another part 8b directed upwards, makes it possible to return the fumes on the upstream side of the structure 6, and outside of the distribution chamber 5.
  • the fumes thus returned are used to heat the thermal load, for example a pan, the contents of which are to be heated or reheated, present on plate 2 in vitro-ceramic.
  • This deflector 8 also serves as a reflective screen, placed facing the downstream face 6b of the catalytic structure 6, for reflecting the radiation emitted by this downstream face, still outside the distribution chamber 5.
  • the catalytic burner 1 comprises means 9 for the return of combustion fumes. These means consist of an annular channel determined between an internal metallic ferrule 12 closing the distribution chamber 5, and an external metallic ferrule 13.
  • the apparatus according to FIGS. 1 and 2 also includes heat exchange means, between the inside of the distribution chamber 5 and the combustion fumes circulating in the abovementioned annular channel; these means consist of a plurality of radial fins 11, in thermal contact with the wall 12, around the flattened cylindrical volume determined by the two wafers 6 and 2, between the internal metallic ferrule 12 and the external metallic ferrule 13, so as to provide between the fins 11 circulation passages. These fins 11 make it possible to extract heat from the distribution chamber 5, to heat the fumes, and thus increase the supply of heat by convection to the thermal load.
  • the circulation means 9 can also be eliminated, while retaining the radial fins 11 of heat exchange.
  • the heat developed by the combustion front 10, and consequently by the catalytic burner is transferred to the thermal receiver 2, and to the thermal load present on the latter, mainly by radiation between the upstream face 6a. of the catalytic structure 6 and the internal face 2a of the receiver, but also for another part by the combustion fumes which bring their heat to the receiver 2 and to the thermal load, and for a last part by metallic conduction between structure 6 and receiver 2.
  • the mixture to be burned can be introduced from the side or around the periphery of the catalytic structure, between the latter and the thermal receptor.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Incineration Of Waste (AREA)
  • Catalysts (AREA)

Claims (12)

  1. Heizung mit einem katalytischen Brenner (1) und einem wenigstens einen Teil der von dem katalytischen Brenner erzeugten Wärme aufbrauchenden thermischen Verbraucher (2), wobei der katalytische Brenner eine Ausstoßeinrichtung (3) für einen Strom eines brennbaren Gases, eine Einrichtung (4) zum Zumischen von Primärluft zu dem Strom zum Erhalten eines brennbaren Gemisches, eine Verteilungskammer (5) für das Gemisch und ein Gefüge (6) der katalytischen Verbrennung, welches von dem Gemisch von seiner mit der Verteilungskammer (5) in Verbindung stehenden Oberseite (6a) zu seiner die Verbrennungsgase beseitigenden stromabwärts gelegenen Seite (6b) durchquert wird, dadurch gekennzeichnet, daß die strahlende Front (10) der Verbrennung ohne Flammen beim Betrieb nahe an der Oberseite des Gefüges der katalytischen Verbrennung angeordnet ist, sich der thermische Verbraucher (2) gegenüber von der Oberseite (6a) des katalytischen Gefüges (6) entlang praktisch der gesamten Oberfläche des letzteren zum Aufnehmen der von der strahlenden Front ausgesandten thermischen Energie erstreckt und der Verbraucher so angeordnet und ausgebildet ist, daß von der der Oberseite (6a) des katalytischen Gefüges gegenüberliegenden Seite (2b) wenigstens 30% der durch Strahlung der von der strahlenden Front erhaltenen thermischen Energie abgeführt wird.
  2. Heizung nach Anspruch 1, dadurch gekennzeichnet, daß der thermische Verbraucher (2) aus einem glaskeramischen Material hergestellt ist.
  3. Heizung nach Anspruch 1, dadurch gekennzeichnet, daß gegenüber der stromabwärts gelegenen Seite (6b) des katalytischen Gefüges (6) eine Ablenkeinrichtung (8) für die Verbrennungsgase zum Zurücklenken dieser Gase von der unteren Oberfläche des Gefüges aus der Verteilungskammer (5) heraus angeordnet ist.
  4. Heizung nach Anspruch 3, dadurch gekennzeichnet, daß die Ablenkeinrichtung (8) thermisch isoliert ist.
  5. Heizung nach Anspruch 3, dadurch gekennzeichnet, daß sie eine Einrichtung (9) zum Umlaufen der von der unteren Oberflache des katalytischen Gefüges (6) zurück-gelenkten Verbrennungsgase aufweist.
  6. Heizung nach Anspruch 5, dadurch gekennzeichnet, daß sie eine Einrichtung (11) für den Wärmeaustausch zwischen dem Inneren der Verteilungskammer (5) und den von der unteren Oberfläche des katalytischen Gefüges (6) zurückgelenkten Verbrennungsgasen aufweist.
  7. Heizung nach den Ansprüchen 5 und 6, dadurch gekennzeichnet, daß die Wärmetauschereinrichtung (11) senkrecht zur Wand (12) der Verteilungskammer (5) und mit der Wand in thermischem Kontakt stehende Flügel hat, wobei diese Flügel den Umlauf der Verbrennungsgase lenken, welche von der unteren Oberfläche des katalytischen Gefüges (6) zurückgelenkt werden.
  8. Heizung nach Anspruch 1, dadurch gekennzeichnet, daß ein Reflektionsschirm (8) gegenüber der stromabwärts gelegenen Fläche (6b) des katalytischen Gefüges (6) zum Reflektieren der von der stromabwärts gelegenen Fläche (6b) des katalytischen Gefüges aus der Verteilungskammer (5) heraus ausgesandten Strahlung angeordnet ist.
  9. Heizung nach Anspruch 1 des Typs Elektroheizung, dadurch gekennzeichnet, daß der thermische Verbraucher (2) zum Übertragen der Wärme durch Leitung und Konvention von der gegenüberliegenden Seite (2b) zur Oberseite (6a) des katalytischen Gefüges (6) angeordnet und ausgebildet ist.
  10. Heizung nach Anspruch 2 des Typs Kochplatte, dadurch gekennzeichnet, daß der thermische Verbraucher (2) zum Abstützen eines Wärmeverbrauchers genau horizontal angeordnet ist.
  11. Heizung nach Anspruch 10, dadurch gekennzeichnet, daß ein den thermischen Verbraucher (2) exakt koplanar verlängernder umfangsseitiger Rand (50) quer zur Bahn der Verbrennungsgase angeordnet ist, um diese in einer horizontalen Richtung abzulenken.
  12. Heizung nach Anspruch 1 des Typs Kochgrill, dadurch gekennzeichnet, daß der thermische Verbraucher (2) zum Zurückstrahlen der Wärme von der gegenüberliegenden Seite (2b) zur Oberseite (6a) des katalytischen Gefüges (6) angeordnet und ausgelegt ist.
EP92420204A 1991-06-28 1992-06-15 Heizung mit katalytischem Brenner Expired - Lifetime EP0520913B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9108339A FR2678360B1 (fr) 1991-06-28 1991-06-28 Appareil de chauffage avec bruleur catalytique.
FR9108339 1991-06-28

Publications (2)

Publication Number Publication Date
EP0520913A1 EP0520913A1 (de) 1992-12-30
EP0520913B1 true EP0520913B1 (de) 1994-10-26

Family

ID=9414682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420204A Expired - Lifetime EP0520913B1 (de) 1991-06-28 1992-06-15 Heizung mit katalytischem Brenner

Country Status (6)

Country Link
US (1) US5251609A (de)
EP (1) EP0520913B1 (de)
JP (1) JP3437190B2 (de)
AT (1) ATE113360T1 (de)
DE (1) DE69200573T2 (de)
FR (1) FR2678360B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842851A (en) * 1995-04-05 1998-12-01 Application Des Gaz Induced air catalytic burner, and apparatus incorporating such a burner
EP1186833A1 (de) 2000-09-05 2002-03-13 Whirlpool Corporation Kochgerät mit atmosphärischem Brenner
RU2721077C2 (ru) * 2016-04-14 2020-05-15 Далянь Инститьют Оф Кемикал Физикс, Чайниз Академи Оф Сайенсез Устройство для каталитического беспламенного сжигания с чрезвычайно малым выбросом загрязняющих веществ и способ сжигания

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2682361B2 (ja) * 1992-12-09 1997-11-26 日本鋼管株式会社 排熱回収型燃焼装置
JP2682362B2 (ja) * 1992-12-09 1997-11-26 日本鋼管株式会社 排熱回収型燃焼装置
FR2708337B1 (fr) * 1993-07-28 1995-09-22 Applic Gaz Sa Appareil de chauffage avec brûleur catalytique, et un dispositif de visualisation de son allumage.
FR2727191A1 (fr) * 1994-11-22 1996-05-24 Applic Gaz Sa Appareil de chauffage avec bruleur catalytique, notamment rechaud de cuisson
FR2741140B1 (fr) * 1995-11-14 1998-01-30 Applic Gaz Sa Appareil de chauffage avec bruleur catalytique
FR2741139B1 (fr) * 1995-11-14 1998-01-30 Applic Gaz Sa Rechaud avec bruleur catalytique, integre dans une table de cuisson
NL1004097C2 (nl) * 1996-09-23 1998-03-24 Gastec Nv Keramische kookplaat.
FR2787866B1 (fr) 1998-12-23 2001-06-08 Applic Gaz Sa Structure de combustion catalytique, bruleur catalytique la comportant et appareil de chauffage comprenant celui-ci
DE19901145A1 (de) * 1999-01-14 2000-07-20 Krieger Gmbh & Co Kg Als Flächenstrahler ausgebildeter Infrarot-Strahler
US6213761B1 (en) * 1999-08-10 2001-04-10 The Coleman Company, Inc. Heating apparatus
JP2002206713A (ja) * 2001-01-10 2002-07-26 Tokyo Gas Co Ltd 平坦加熱面型ガスコンロ
US6497571B1 (en) 2001-04-20 2002-12-24 Teledyne Energy Systems, A Division Of Teledyne Durable catalytic burner system
WO2004051145A1 (en) * 2002-11-29 2004-06-17 Lg Electronics Inc. Gas radiation oven range
US8517717B2 (en) * 2004-08-13 2013-08-27 Velocys, Inc. Detonation safety in microchannels
US20070044667A1 (en) * 2005-08-26 2007-03-01 Saflame Product Corp. Contained flame heating system and method for maintaining chafing dishes and the like heated for prolonged periods
US7824654B2 (en) * 2005-11-23 2010-11-02 Wilson Mahlon S Method and apparatus for generating hydrogen
US7766005B2 (en) * 2006-01-20 2010-08-03 Lg Electronics Inc. Gas radiation burner and controlling method thereof
SE530775C2 (sv) * 2007-01-05 2008-09-09 Zemission Ab Värmeanordning för katalytisk förbränning av vätskeformiga bränslen samt en spis innefattande en sådan värmeanordning
US10690340B2 (en) * 2010-01-06 2020-06-23 Precision Combustion, Inc. Flameless cooking appliance
US20140338660A1 (en) * 2011-11-14 2014-11-20 Gregory Alan Kelly Gas powered heater
KR101573989B1 (ko) * 2013-12-26 2015-12-02 엘지전자 주식회사 조리기기 및 버너 유닛
DE102015207056A1 (de) * 2015-04-17 2016-10-20 Bielomatik Leuze Gmbh + Co. Kg Heizvorrichtung und Heizverfahren
US10584869B2 (en) * 2015-07-27 2020-03-10 The United States Of America As Represented By The Secretary Of The Army Heater
US11877687B2 (en) 2015-07-27 2024-01-23 The United States Of America As Represented By The Secretary Of The Army Heater and cookware for flameless catalytic combustion
DE102016122776A1 (de) * 2016-11-25 2018-05-30 Frima International Ag Gargerät

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US3299938A (en) * 1965-03-29 1967-01-24 Corning Glass Works Gas-fired radiant burner
US4189294A (en) * 1977-10-18 1980-02-19 Comstock & Wescott Inc. Flameless combustion burner and method of operation
SU1252613A1 (ru) * 1985-03-14 1986-08-23 Институт газа АН УССР Реактор дл термокаталитической очистки газообразных выбросов
JPS61250413A (ja) * 1985-04-27 1986-11-07 Nakajima Doukoushiyo:Kk 熱風発生装置
FR2621981B1 (fr) * 1987-10-20 1990-02-09 Applic Gaz Sa Appareil chauffant avec bruleur catalytique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5842851A (en) * 1995-04-05 1998-12-01 Application Des Gaz Induced air catalytic burner, and apparatus incorporating such a burner
EP1186833A1 (de) 2000-09-05 2002-03-13 Whirlpool Corporation Kochgerät mit atmosphärischem Brenner
RU2721077C2 (ru) * 2016-04-14 2020-05-15 Далянь Инститьют Оф Кемикал Физикс, Чайниз Академи Оф Сайенсез Устройство для каталитического беспламенного сжигания с чрезвычайно малым выбросом загрязняющих веществ и способ сжигания

Also Published As

Publication number Publication date
JPH05187618A (ja) 1993-07-27
FR2678360B1 (fr) 1993-09-10
DE69200573T2 (de) 1995-03-09
DE69200573D1 (de) 1994-12-01
JP3437190B2 (ja) 2003-08-18
FR2678360A1 (fr) 1992-12-31
ATE113360T1 (de) 1994-11-15
EP0520913A1 (de) 1992-12-30
US5251609A (en) 1993-10-12

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