EP0913640A2 - Combustion chamber for gas burner from a water heater and a heating apparatus - Google Patents

Combustion chamber for gas burner from a water heater and a heating apparatus Download PDF

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Publication number
EP0913640A2
EP0913640A2 EP98119352A EP98119352A EP0913640A2 EP 0913640 A2 EP0913640 A2 EP 0913640A2 EP 98119352 A EP98119352 A EP 98119352A EP 98119352 A EP98119352 A EP 98119352A EP 0913640 A2 EP0913640 A2 EP 0913640A2
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EP
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Prior art keywords
combustion chamber
chamber according
temperature
reflecting layer
ceramic
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EP98119352A
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German (de)
French (fr)
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EP0913640A3 (en
Inventor
Marcus Bienzle
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP0913640A3 publication Critical patent/EP0913640A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05004—Special materials for walls or lining

Definitions

  • the invention relates to a combustion chamber, in particular for Gas water heaters and gas heater burners that a at least laterally delimiting the combustion chamber Have a combustion chamber wall made of temperature-resistant material, the combustion chamber having a burner at a lower level and has a heat exchanger arranged above it.
  • Such a combustion chamber is e.g. from DE 30 24 792 C2 known.
  • combustion chambers are used for the combustion chamber wall Thermal insulation mostly made of ceramic fibers used, the wall thickness is about 10 mm and for Stabilization are provided with a sheet metal jacket. At full load operation of gas-fired device burners occur the outer surface of the combustion chamber wall, i.e. on the sheet metal casing Peak temperatures up to approx. 300 ° C. The average wall temperature is over 200 ° C. Thereby the combustion chamber experiences radiation losses that are common are in the range of 5-9%.
  • the ceramic fiber thermal insulation panels used for the combustion chamber wall represent an inexpensive solution for the required thermal insulation of the combustion chamber wall, however have a biologically and physiologically questionable Fiber material through openings in the sheet metal jacket step out and into the lungs of a living being, especially of a human being.
  • the above task is in a generic combustion chamber solved according to the invention in that the combustion chamber wall through a self-supporting high temperature resistant ceramic thermal insulation panel with low thermal conductivity is formed, which on its inner wall surface is coated with an infrared reflecting layer.
  • the infrared reflecting layer improved reflective properties of the inner surface of the Combustion chamber wall, the transmission losses of the Combustion chamber reduced, the heat remains in one larger part in the combustion chamber or in the combustion gases and can be transferred to the water via the heat exchanger be fed.
  • a high water efficiency can be achieved with this combustion chamber wall achieve without water cooling.
  • the thickness of the infrared reflecting layer is only a few ⁇ m.
  • Such a layer can be flame or Plasma spraying, vapor deposition or on chemical / electrochemical Be applied away.
  • a material for this Temperature resistant metals and coating come Metal alloys and according to their emission spectrum selected ceramic materials, e.g. Alumina in question.
  • Ceramic material existing coating is for the degradation of Temperature peaks and especially to avoid cracks advantageous.
  • the coating eliminates temperature peaks at the Dismantled inside the combustion chamber wall. An even one The result is temperature distribution. In the self-supporting Thermal insulation board used ceramic Backing material is caused by temperature peaks thermal stresses and shrinkage cracks reduced or avoided.
  • the combustion chamber wall can be opened have a sheet metal casing on their outer surface.
  • This Sheet metal sheathing can be between itself and the ceramic Plate have an air gap, so that additional air through openings on the underside of the combustion chamber wall in enter this air gap and the ceramic plate of the Can cool the combustion chamber wall.
  • the only drawing figure shows schematically one Cross section through a section of an inventive Embodiment of the proposed combustion chamber.
  • the combustion chamber 4 shown in the figure forms one from the combustion chamber wall 1 laterally surrounded space, and a Burner 2 is in a down position and on Heat exchanger 3 at an overlying position arranged.
  • the burner 2 is preferably a gas burner a gas water heater or gas heater.
  • the combustion chamber wall 1 consists of a self-supporting high temperature resistant ceramic Thermal insulation plate 10 with low thermal conductivity, that on its inner wall surface 11 with a layer 12 is provided, which is primarily the infrared radiation spectrum reflected.
  • This layer 12 is either through Flame or plasma spraying, by vaporization or on applied chemical / electrochemical way.
  • the material of the thin infrared reflecting layer 12 on the inner wall surface of the heat-insulating ceramic Plate 10 can e.g. a temperature-resistant metal or too be a temperature-resistant metal alloy. Alternatively, you can the infrared reflecting layer from a according to his Emission spectrum selected ceramic material consist. Such a ceramic material of layer 12 can e.g. Be alumina.
  • the figure shows the thickness of the layer 12 in Relative to the thickness of the ceramic plate 10 exaggerated represents.
  • the thickness of the infrared reflective layer should only be a few ⁇ m.
  • One for the self-supporting heat-insulating ceramic Suitable material is high temperature resistant Structural ceramics, e.g. a well-known from gas turbine construction Silicon nitride or silicon carbide material.
  • the combustion chamber wall 1 does not necessarily need an additional support or casing.
  • the ceramic plate 10 encasing sheet metal jacket 14 is provided be.
  • This sheet metal jacket 14 can be arranged such that between the heat insulating high temperature resistant ceramic plate 10 and the sheet metal jacket 14 an air gap 13 remains, the one of the burner during operation cool air flow from the ambient air flows through, through openings on the underside of the combustion chamber wall and through other openings at the top of the same can leak. This air flow through the air gap 13 cools the ceramic plate 10 on its outside and additionally the sheet metal jacket 14.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

A combustion chamber (4) has a temperature resistant wall (1) of a low thermal conductivity self-supporting ceramic heat insulating plate (10) coated with an IR reflective layer (12) on its interior wall surface (11).

Description

Hintergrund der ErfindungBackground of the Invention

Die Erfindung betrifft eine Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner, die eine die Brennkammer wenigstens seitlich begrenzende Brennkammerwand aus temperaturfestem Material aufweisen, wobei die Brennkammer einen tieferliegenden Brenner und einen darüber angeordneten Wärmeübertrager aufweist.The invention relates to a combustion chamber, in particular for Gas water heaters and gas heater burners that a at least laterally delimiting the combustion chamber Have a combustion chamber wall made of temperature-resistant material, the combustion chamber having a burner at a lower level and has a heat exchanger arranged above it.

Eine solche Brennkammer ist z.B. aus DE 30 24 792 C2 bekannt.Such a combustion chamber is e.g. from DE 30 24 792 C2 known.

Für die Brennkammerwand bekannter Brennkammern werden zur Wärmedämmung zumeist aus Keramikfasern bestehende Platten verwendet, deren Wandstärke etwa 10 mm beträgt und die zur Stabilisierung mit einer Blechummantelung versehen sind. Bei Vollastbetrieb von Gas-Keizungsgerätebrennern treten an der Außenfläche der Brennkammerwand, d.h. an der Blechummantelung Spitzentemperaturen bis ca. 300°C auf. Die mittlere Wandtemperatur liegt bei über 200°C. Dadurch erfährt die Brennkammer Abstrahlverluste, die üblicherweise im Bereich von 5-9% liegen.Known combustion chambers are used for the combustion chamber wall Thermal insulation mostly made of ceramic fibers used, the wall thickness is about 10 mm and for Stabilization are provided with a sheet metal jacket. At full load operation of gas-fired device burners occur the outer surface of the combustion chamber wall, i.e. on the sheet metal casing Peak temperatures up to approx. 300 ° C. The average wall temperature is over 200 ° C. Thereby the combustion chamber experiences radiation losses that are common are in the range of 5-9%.

Die für die Brennkammerwand verwendeten Keramikfaser-Wärmedämmplatten stellen zwar eine kostengünstige Lösung für die geforderte Wärmedämmung der Brennkammerwand dar, weisen jedoch ein biologisch und physiologisch bedenkliches Fasermaterial auf, das durch Öffnungen in der Blechummantelung nach außen treten und in die Lunge eines Lebewesens, besonders eines Menschen gelangen kann.The ceramic fiber thermal insulation panels used for the combustion chamber wall represent an inexpensive solution for the required thermal insulation of the combustion chamber wall, however have a biologically and physiologically questionable Fiber material through openings in the sheet metal jacket step out and into the lungs of a living being, especially of a human being.

Kurzfassung der ErfindungSummary of the invention

Angesichts des oben Gesagten ist es Aufgabe der Erfindung, eine gattungsgemäße Brennkammer so zu ermöglichen, daß bei ausreichender Wärmedämmung der Brennkammerwand an ihrer Außenfläche keine gefährlich hohen Temperaturen auftreten, daß der Wasserwirkungsgrad durch die herabgesetzte Außenwandtemperatur erhöht und daß gleichzeitig die Emission gesundheitsgefährlicher Keramikpartikel vermieden ist.In view of the above, it is an object of the invention to enable a generic combustion chamber so that at adequate thermal insulation of the combustion chamber wall on your No dangerously high temperatures occur outside, that the water efficiency due to the reduced outside wall temperature increases and that at the same time the emission dangerous ceramic particles is avoided.

Die obige Aufgabe wird bei einer gattungsgemäßen Brennkammer erfindungsgemäß dadurch gelöst, daß die Brennkammerwand durch eine selbsttragende hochtemperaturfeste keramische Wärmeisolationsplatte mit geringer Wärmeleitfähigkeit gebildet ist, welche auf ihrer Innenwandfläche mit einer infrarotreflektierenden Schicht beschichtet ist.The above task is in a generic combustion chamber solved according to the invention in that the combustion chamber wall through a self-supporting high temperature resistant ceramic thermal insulation panel with low thermal conductivity is formed, which on its inner wall surface is coated with an infrared reflecting layer.

Durch die durch die infrarotreflektierende Schicht verbesserten Reflexionseigenschaften der Innenfläche der Brennkammerwand werden die Transmissionsverluste der Brennkammer verringert, die Wärme verbleibt zu einem größeren Teil in der Brennkammer bzw. in den Verbrennungsgasen und kann über den Wärmeübertrager dem Wasser zugeführt werden.Through the infrared reflecting layer improved reflective properties of the inner surface of the Combustion chamber wall, the transmission losses of the Combustion chamber reduced, the heat remains in one larger part in the combustion chamber or in the combustion gases and can be transferred to the water via the heat exchanger be fed.

Mit dieser Brennkammerwand läßt sich ein hoher Wasserwirkungsgrad ohne Wasserkühlung erzielen.A high water efficiency can be achieved with this combustion chamber wall achieve without water cooling.

Die Dicke der infrarotreflektierenden Schicht beträgt nur einige µm. Eine solche Schicht kann durch Flamm- oder Plasmaspritzen, Bedampfung oder auf chemischem/elektrochemischem Weg aufgebracht werden. Als Werkstoff für diese Beschichtung kommen temperaturfeste Metalle und Metallegierungen sowie nach ihrem Emissionsspektrum ausgewählte keramische Materialien, wie z.B. Aluminiumoxid in Frage.The thickness of the infrared reflecting layer is only a few µm. Such a layer can be flame or Plasma spraying, vapor deposition or on chemical / electrochemical Be applied away. As a material for this Temperature resistant metals and coating come Metal alloys and according to their emission spectrum selected ceramic materials, e.g. Alumina in question.

Eine aus einem Aluminiumoxid oder aus einem anderen hinsichtlich seines Emmisionsspektrums ausgewählten Keramikmaterial bestehende Beschichtung ist zum Abbau von Temperaturspitzen und zur Vermeidung von Rissen besonders vorteilhaft.One made of alumina or another selected with regard to its emission spectrum Ceramic material existing coating is for the degradation of Temperature peaks and especially to avoid cracks advantageous.

Durch die Beschichtung werden Temperaturspitzen an der Innenseite der Brennkammerwand abgebaut. Eine gleichmäßige Temperaturverteilung ist die Folge. In dem als selbsttragende Wärmeisolationsplatte verwendeten keramischen Trägermaterial werden so durch Temperaturspitzen hervorgerufene thermische Spannungen und Schwundrisse abgebaut bzw. vermieden.The coating eliminates temperature peaks at the Dismantled inside the combustion chamber wall. An even one The result is temperature distribution. In the self-supporting Thermal insulation board used ceramic Backing material is caused by temperature peaks thermal stresses and shrinkage cracks reduced or avoided.

Bei einer Weiterbildungsform kann die Brennkammerwand auf ihrer Außenfläche eine Blechummantelung aufweisen. Diese Blechummantelung kann zwischen sich und der keramischen Platte einen Luftspalt aufweisen, so daß zusätzlich Luft durch Öffnungen an der Unterseite der Brennkammerwand in diesen Luftspalt eintreten und die keramische Platte der Brennkammerwand kühlen kann.In one form of further education, the combustion chamber wall can be opened have a sheet metal casing on their outer surface. This Sheet metal sheathing can be between itself and the ceramic Plate have an air gap, so that additional air through openings on the underside of the combustion chamber wall in enter this air gap and the ceramic plate of the Can cool the combustion chamber wall.

Zeichnungdrawing

Die einzige Zeichnungsfigur zeigt schematisch einen Querschnitt durch einen Abschnitt einer erfindungsgemäßen Ausführungsform der vorgeschlagenen Brennkammer.The only drawing figure shows schematically one Cross section through a section of an inventive Embodiment of the proposed combustion chamber.

Die in der Figur dargestellte Brennkammer 4 bildet einen von der Brennkammerwand 1 seitlich umgebenen Raum, und ein Brenner 2 ist in einer unteren Position und ein Wärmeübertrager 3 an einer darüber liegenden Position angeordnet. Der Brenner 2 ist bevorzugt ein Gasbrenner eines Gas-Warmwasserbereiters oder Gas-Heizungsgeräts.The combustion chamber 4 shown in the figure forms one from the combustion chamber wall 1 laterally surrounded space, and a Burner 2 is in a down position and on Heat exchanger 3 at an overlying position arranged. The burner 2 is preferably a gas burner a gas water heater or gas heater.

Im Ausführungsbeispiel besteht die Brennkammerwand 1 aus einer selbsttragenden hochtemperaturfesten keramischen Wärmeisolationsplatte 10 mit geringer Wärmeleitfähigkeit, die auf ihrer Innenwandfläche 11 mit einer Schicht 12 versehen ist, die vor allem das infrarote Strahlungsspektrum reflektiert. Diese Schicht 12 wird entweder durch Flamm- oder Plasmaspritzen, durch Bedampfung oder auf chemischem/elektrochemischem Weg aufgebracht.In the exemplary embodiment, the combustion chamber wall 1 consists of a self-supporting high temperature resistant ceramic Thermal insulation plate 10 with low thermal conductivity, that on its inner wall surface 11 with a layer 12 is provided, which is primarily the infrared radiation spectrum reflected. This layer 12 is either through Flame or plasma spraying, by vaporization or on applied chemical / electrochemical way.

Das Material der dünnen, infrarotreflektierenden Schicht 12 auf der Innenwandfläche der wärmeisolierenden keramischen Platte 10 kann z.B. ein temperaturfestes Metall oder auch eine temperaturfeste Metallegierung sein. Alternativ kann die infrarotreflektierende Schicht aus einem gemäß seinem Emissionsspektrum ausgewählten keramischen Material bestehen. Ein solches keramisches Material der Schicht 12 kann z.B. Aluminiumoxid sein.The material of the thin infrared reflecting layer 12 on the inner wall surface of the heat-insulating ceramic Plate 10 can e.g. a temperature-resistant metal or too be a temperature-resistant metal alloy. Alternatively, you can the infrared reflecting layer from a according to his Emission spectrum selected ceramic material consist. Such a ceramic material of layer 12 can e.g. Be alumina.

Es ist deutlich, daß die Figur die Dicke der Schicht 12 im Verhältnis zur Dicke der Keramikplatte 10 übertrieben darstellt. Die Dicke der infrarotreflektierenden Schicht soll nämlich nur einige µm betragen.It is clear that the figure shows the thickness of the layer 12 in Relative to the thickness of the ceramic plate 10 exaggerated represents. The thickness of the infrared reflective layer should only be a few µm.

Ein für die selbsttragende wärmeisolierende keramische Platte geeignetes Material ist hochtemperaturbeständige Strukturkeramik, z.B. ein aus dem Gasturbinenbau bekanntes Siliziumnitrid- oder Siliziumkarbidmaterial.One for the self-supporting heat-insulating ceramic Suitable material is high temperature resistant Structural ceramics, e.g. a well-known from gas turbine construction Silicon nitride or silicon carbide material.

Da die keramische Wärmeisolationsplatte 10 selbsttragend ist, braucht die Brennkammerwand 1 nicht notwendigerweise eine zusätzliche Abstützung oder Ummantelung. Since the ceramic heat insulation plate 10 is self-supporting , the combustion chamber wall 1 does not necessarily need an additional support or casing.

Um jedoch die relativ teure wärmeisolierende keramische Platte 10 aus hochtemperaturbeständiger Strukturkeramik vor mechanischer Beschädigung zu schützen, kann zusätzlich ein die Keramikplatte 10 ummantelnder Blechmantel 14 vorgesehen sein. Dieser Blechmantel 14 kann so angeordnet sein, daß zwischen der wärmeisolierenden hochtemperaturbeständigen keramischen Platte 10 und dem Blechmantel 14 ein Luftspalt 13 verbleibt, der beim Betrieb des Brenners von einem kühlen Luftstrom aus der Umgebungsluft durchströmt wird, der durch Öffnungen an der Unterseite der Brennkammerwand ein- und durch andere Öffnungen an der Oberseite derselben austreten kann. Dieser Luftstrom durch den Luftspalt 13 kühlt die Keramikplatte 10 auf ihrer Außenseite und zusätzlich den Blechmantel 14.However, around the relatively expensive heat insulating ceramic Plate 10 made of high temperature resistant structural ceramics Protecting mechanical damage can also be a the ceramic plate 10 encasing sheet metal jacket 14 is provided be. This sheet metal jacket 14 can be arranged such that between the heat insulating high temperature resistant ceramic plate 10 and the sheet metal jacket 14 an air gap 13 remains, the one of the burner during operation cool air flow from the ambient air flows through, through openings on the underside of the combustion chamber wall and through other openings at the top of the same can leak. This air flow through the air gap 13 cools the ceramic plate 10 on its outside and additionally the sheet metal jacket 14.

In einer bevorzugten Ausführungsform ist der Querschnitt der Brennkammerwand rechteckig, so daß sich eine derart konstruierte Brennkammer besonders für den Einsatz in Gas-Warmwasserbereitern und Gas-Heizungsgerätebrennern eignet.In a preferred embodiment, the cross section the combustion chamber wall rectangular, so that one such designed combustion chamber especially for use in gas water heaters and gas heater burners.

Claims (10)

Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner, die eine die Brennkammer (4) wenigstens seitlich begrenzende Brennkammerwand (1) aus temperaturfestem Material aufweisen, wobei die Brennkammer (4) einen tieferliegenden Brenner (2) und einen darüber angeordneten Wärmeübertrager (3) aufweist,
dadurch gekennzeichnet, daß die Brennkammerwand (1) durch eine selbsttragende hochtemperaturfeste keramische Wärmeisolationsplatte (10) mit geringer Wärmeleitfähigkeit gebildet ist, welche auf ihrer Innenwandfläche (11) mit einer infrarotreflektierenden Schicht (12) beschichtet ist.Combustion chamber, in particular for gas water heaters and gas heating device burners, which have a combustion chamber wall (1) at least laterally delimiting the combustion chamber (4) made of temperature-resistant material, the combustion chamber (4) having a burner (2) at a lower level and a heat exchanger arranged above it ( 3) has
characterized in that the combustion chamber wall (1) is formed by a self-supporting, high-temperature-resistant ceramic heat insulation plate (10) with low thermal conductivity, which is coated on its inner wall surface (11) with an infrared-reflecting layer (12). Brennkammer nach Anspruch 1, dadurch gekennzeichnet, daß die selbsttragende wärmeisolierende keramische Platte (10) aus hochtemperaturbeständiger Strukturkeramik besteht.Combustion chamber according to claim 1, characterized in that the self-supporting heat-insulating ceramic plate (10) consists of high-temperature-resistant structural ceramics. Brennkammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Dicke der infrarotreflektierenden Schicht (12) einige µm beträgt.Combustion chamber according to claim 1 or 2, characterized in that the thickness of the infrared reflecting layer (12) is a few µm. Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die infrarotreflektierende Schicht (12) aus einem temperaturfesten Metall oder einer solchen Metallegierung besteht.Combustion chamber according to one of the preceding claims, characterized in that the infrared reflecting layer (12) consists of a temperature-resistant metal or such a metal alloy. Brennkammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die infrarotreflektierende Schicht (12) aus einem nach seinem Emissionsspektrum ausgewählten keramischen Material besteht. Combustion chamber according to one of claims 1 to 3, characterized in that the infrared reflecting layer (12) consists of a ceramic material selected according to its emission spectrum. Brennkammer nach Anspruch 5, dadurch gekennzeichnet, daß das keramische Material der infrarotreflektierenden Schicht (12) Aluminiumoxid, z.B. Korund, ist.Combustion chamber according to claim 5, characterized in that the ceramic material of the infrared reflecting layer (12) is aluminum oxide, eg corundum. Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die hochtemperaturbeständige keramische Wärmeisolationsplatte (10) der Brennkammerwand (1) zusätzlich auf ihrer Außenwandfläche eine Blechummantelung (14) aufweist.Combustion chamber according to one of the preceding claims, characterized in that the high-temperature-resistant ceramic heat insulation plate (10) of the combustion chamber wall (1) additionally has a sheet metal casing (14) on its outer wall surface. Brennkammer nach Anspruch 7, dadurch gekennzeichnet, daß die Blechummantelung unter Einhaltung eines Luftspaltes (13) die keramische Platte (10) ummantelt.Combustion chamber according to claim 7, characterized in that the sheet metal casing encases the ceramic plate (10) while maintaining an air gap (13). Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Querschnitt der Brennkammerwand rechteckig ist.Combustion chamber according to one of the preceding claims, characterized in that the cross section of the combustion chamber wall is rectangular. Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie in Gas-Warmwasserbereitern und Gas-Heizungsgerätebrennern einsetzbar ist.Combustion chamber according to one of the preceding claims, characterized in that it can be used in gas water heaters and gas heating device burners.
EP98119352A 1997-10-31 1998-10-14 Combustion chamber for gas burner from a water heater and a heating apparatus Withdrawn EP0913640A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997148260 DE19748260A1 (en) 1997-10-31 1997-10-31 Combustion chamber, especially for gas water heaters and gas heater burners
DE19748260 1997-10-31

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EP0913640A2 true EP0913640A2 (en) 1999-05-06
EP0913640A3 EP0913640A3 (en) 2000-05-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469096A1 (en) * 2003-04-18 2004-10-20 "System" Spolka Akcyjna Method of making anticorrosion coatings on the cooling shields of furnance chambers
CN103411311A (en) * 2013-07-18 2013-11-27 芜湖美的厨卫电器制造有限公司 Heat exchanger of gas water heater and gas water heater
CN112747457A (en) * 2021-01-29 2021-05-04 中山市恒乐电器有限公司 Heat exchange structure for water heater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015154B4 (en) 2009-03-26 2018-06-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Thermal insulation protection components

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024792C2 (en) 1979-07-13 1988-09-08 E.L.M. Leblanc, Drancy, Fr

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505765A1 (en) * 1975-02-12 1976-08-19 Bosch Gmbh Robert Gas or oil burner fired water heating device - has lamellar heat exchanger block with through flow tubes mounted on frame
CS197697B1 (en) * 1977-11-22 1980-05-30 Vaclav Pilous Double course protective coat of heat stressed components
US4630594A (en) * 1983-03-09 1986-12-23 Ellersick Russell R Furnace wall lining composition and the use thereof
DE4025583A1 (en) * 1990-08-11 1992-02-13 Bosch Gmbh Robert Water heater with gas or oil burner
AT400485B (en) * 1992-04-07 1996-01-25 Vaillant Gmbh UNCOOLED COMBUSTION CHAMBER FOR GUIDING COMBUSTION GASES FROM A BURNER
DE9415989U1 (en) * 1994-10-05 1996-02-01 Viessmann Werke Gmbh & Co, 35108 Allendorf Thermal insulation molding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024792C2 (en) 1979-07-13 1988-09-08 E.L.M. Leblanc, Drancy, Fr

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1469096A1 (en) * 2003-04-18 2004-10-20 "System" Spolka Akcyjna Method of making anticorrosion coatings on the cooling shields of furnance chambers
CN103411311A (en) * 2013-07-18 2013-11-27 芜湖美的厨卫电器制造有限公司 Heat exchanger of gas water heater and gas water heater
CN112747457A (en) * 2021-01-29 2021-05-04 中山市恒乐电器有限公司 Heat exchange structure for water heater

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EP0913640A3 (en) 2000-05-03

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