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EP0913641B1 - Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz - Google Patents

Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz Download PDF

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Publication number
EP0913641B1
EP0913641B1 EP98120440A EP98120440A EP0913641B1 EP 0913641 B1 EP0913641 B1 EP 0913641B1 EP 98120440 A EP98120440 A EP 98120440A EP 98120440 A EP98120440 A EP 98120440A EP 0913641 B1 EP0913641 B1 EP 0913641B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
wall
layer
chamber according
ceramic
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
EP98120440A
Other languages
German (de)
English (en)
Other versions
EP0913641A2 (fr
EP0913641A3 (fr
Inventor
Peter Boiger
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0913641A2 publication Critical patent/EP0913641A2/fr
Publication of EP0913641A3 publication Critical patent/EP0913641A3/fr
Application granted granted Critical
Publication of EP0913641B1 publication Critical patent/EP0913641B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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 for water heaters, especially gas heaters, the one that Combustion chamber at least laterally delimiting combustion chamber wall made of temperature-resistant material.
  • 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.
  • the ceramic fiber thermal insulation panels used for the combustion chamber wall provide an inexpensive solution for the required thermal insulation of the combustion chamber wall, however have a biologically and physiologically questionable Fiber material on through openings in the sheet metal jacket step out and into the lungs of a living being, especially of a human being. Also are the people involved in the manufacture of the combustion chamber very dangerous to health.
  • the ceramic fiber plates used have excellent insulation, but poor Resistance to aging and temperature.
  • the above object is achieved in that the combustion chamber wall is made of heat-insulating ceramic Insulating material existing outer wall plate or layer and a separate inner wall plate made of high temperature resistant Structural ceramics that the covers outer wall plate to the interior of the combustion chamber.
  • the known structure the combustion chamber through a thin-walled layer or plate made of high temperature resistant structural ceramics on the To supplement the inside of the combustion chamber wall, on the one hand high temperature resistance and excellent thermal insulation properties and on the other hand the outside Subsequent thermal insulation layer or plate opposite the Burner interior covers.
  • the outer wall layer or -plate consist of a ceramic fiber plate, since now none Ceramic fibers can get more into the ambient air.
  • the outer wall plate is alternative and preferred in the form of a press plate made of ceramic fill formed, which is not physiological even during manufacture can give off questionable fibers.
  • combustion chamber wall also stabilizes towards the outside and protected, is the outer wall layer or panel additionally on the outside of a retaining sheet jacket jacketed.
  • the high-temperature-resistant structural ceramic inner wall plate can advantageously be relative run thin-walled, so that in a few A homogeneous temperature spectrum seconds after the burner starts reinforced by the spatial separation from the actual one Thermal insulation panel, i.e. the outer wall plate.
  • the outer thermal insulation board or layer consisting of ceramic fill can be a outer, encasing the outer wall layer or plate Holding plate with an air gap between them and the outer wall layer or plate. Cool ambient air can flow through this air gap, the one located on the underside of the combustion chamber wall Openings in and out of their openings Top side flows out.
  • the thermal insulation properties of the combustion chamber wall corrective measure, the inner wall surface of the made of high temperature resistant structural ceramics inner wall plate also with an infrared reflecting Layer be coated.
  • This infrared reflective Layer is only a few ⁇ m thick and can either made of a temperature-resistant metal, a temperature-resistant Metal alloy or alternatively from one after his Emission spectrum selected ceramic material consist.
  • This ceramic material can, for example Alumina, especially corundum.
  • the coating eliminates temperature peaks at the Dismantled inside the combustion chamber wall. An even one The result is temperature distribution.
  • high-temperature-resistant structural ceramics are thus Thermal peaks and thermal stresses Shrinkage cracks reduced or avoided.
  • 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 lower position and a heat exchanger 3 on one above the burner 2 Position arranged.
  • the burner 2 is preferably a Gas burner of a gas water heater or gas water heater.
  • the Cross section rectangular combustion chamber wall 1 from the inside to outside of an inner wall plate 11 made of high temperature resistant Structural ceramics, one of them separate Press plate 10 made of ceramic fill, an air gap 15 and an outer sheet metal jacket in the form of the outside the press plate 10 in compliance with the air gap mentioned 15 covering retaining plate 14.
  • the inner wall of the inner wall plate 11 is optionally made of high temperature resistant structural ceramics with an infrared reflecting Layer 12 coated, which consists of a ceramic selected according to its emission spectrum Material such as Corundum.
  • the figure is the thickness of the infrared reflecting Layer 12 in relation to the thickness of the inner wall plate 11 is exaggerated.
  • the thickness of the infrared reflecting layer 12 is only a few microns.
  • the figure also shows that the outer press plate 10th surrounding sheet metal jacket 14 by an end plate as the Heat exchanger 3 trained bracket 13 with the Heat exchanger 3 is connected.
  • the one described above and shown in the figure preferred embodiment of the proposed combustion chamber avoids completely physiologically questionable emissions ceramic fibers in the manufacturing process, during the Operating and recycling by one made of ceramic Existing existing press plate 10 is used.
  • This ceramic bed can be inexpensively as Make the press plate.
  • this press plate is from said sheet metal jacket 14 and inwards through the relatively thin inner wall plate 11 made of high temperature resistant Structural ceramics covered, optionally on their inner wall with an infrared reflecting, very thin ceramic layer 12 is coated.
  • the according Embodiment realized combustion chamber has excellent thermal insulation properties, high temperature resistance and can be relatively inexpensive produce small dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Details Of Fluid Heaters (AREA)
  • Air Supply (AREA)

Claims (12)

  1. Chambre de combustion pour un chauffe-eau, notamment appareils de chauffage au gaz, présentant une paroi de chambre de combustion (1) en matériau résistant aux températures, délimitant au moins latéralement la chambre de combustion (4),
    caractérisée en ce que
    la paroi de chambre de combustion (1) présente un panneau ou une couche de paroi (10) extérieur réalisé à partir d'un matériau céramique thermiquement isolant, et un panneau de paroi (11) intérieur séparé de celui-ci réalisé à partir d'une céramique structurée résistant à des températures élevées, qui recouvre le panneau de paroi (10) extérieur vers l'espace intérieur de la chambre de combustion (4).
  2. Chambre de combustion selon la revendication 1,
    caractérisée en ce que
    la couche de paroi (10) extérieure est réalisée à partir d'un panneau en fibres céramiques.
  3. Chambre de combustion selon la revendication 1,
    caractérisée en ce que
    la couche de paroi (10) extérieure est réalisée par foisonnement céramique.
  4. Chambre de combustion selon la revendication 1,
    caractérisée en ce que
    le foisonnement céramique a la forme d'un panneau comprimé (10).
  5. Chambre de combustion selon la revendication 1,
    caractérisée en ce que
    la couche ou le panneau de paroi (10) extérieur est en outre entouré d'une tôle de retenue (14) au niveau de sa face extérieure.
  6. Chambre de combustion selon la revendication 1 ou 3 à 5,
    caractérisée en ce que
    la tôle de retenue (14) entoure la couche ou le panneau de paroi extérieur (10) en respectant un intervalle d'air.
  7. Chambre de combustion selon l'une des revendications 1 à 6,
    caractérisée en ce que
    la surface de paroi intérieure du panneau de paroi intérieur (11) en céramique structurée résistant à des températures élevées est en outre revêtue par une couche à réflexion infrarouge (12).
  8. Chambre de combustion selon la revendication 7,
    caractérisée en ce que
    l'épaisseur de la couche à réflexion infrarouge (12) est de quelques µm.
  9. Chambre de combustion selon la revendication 7 ou 8,
    caractérisée en ce que
    la couche à réflexion infrarouge (12) est réalisée à partir d'un métal résistant aux températures ou d'un tel alliage de métaux.
  10. Chambre de combustion selon la revendication 7 ou 8,
    caractérisée en ce que
    la couche à réflexion infrarouge (12) est réalisée à partir d'un matériau céramique choisi en fonction de son spectre d'émission.
  11. Chambre de combustion selon la revendication 10,
    caractérisée en ce que
    le matériau céramique de la couche à réflexion infrarouge (12) est en oxyde d'aluminium, par exemple en corindon.
  12. Chambre de combustion selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la section transversale de la paroi de chambre de combustion (1) est rectangulaire.
EP98120440A 1997-10-31 1998-10-29 Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz Expired - Lifetime EP0913641B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19748259A DE19748259A1 (de) 1997-10-31 1997-10-31 Brennkammer für Warmwasserbereiter, insbesondere Gasheizgeräte
DE19748259 1997-10-31

Publications (3)

Publication Number Publication Date
EP0913641A2 EP0913641A2 (fr) 1999-05-06
EP0913641A3 EP0913641A3 (fr) 2000-05-03
EP0913641B1 true EP0913641B1 (fr) 2003-08-27

Family

ID=7847292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120440A Expired - Lifetime EP0913641B1 (fr) 1997-10-31 1998-10-29 Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz

Country Status (3)

Country Link
EP (1) EP0913641B1 (fr)
AT (1) ATE248324T1 (fr)
DE (2) DE19748259A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111411B (fi) * 2001-10-24 2003-07-15 Outokumpu Oy Laite vedenlämmittimeen
CN119642411B (zh) * 2024-12-04 2025-12-05 珠海格力电器股份有限公司 燃气热水器的检火装置、燃气热水器及检火控制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020772A (en) * 1976-01-22 1977-05-03 The Lummus Company Process to protect process heater casing from corrosion
FR2461199A1 (fr) * 1979-07-13 1981-01-30 Leblanc Sa E L M Perfectionnements apportes aux chambres de combustion d'appareils chauffes au gaz
DE3144744C2 (de) * 1981-11-11 1984-04-12 Lafarge Réfractaires, 92542 Montronge Heizungskessel
US4630594A (en) * 1983-03-09 1986-12-23 Ellersick Russell R Furnace wall lining composition and the use thereof
AT400485B (de) * 1992-04-07 1996-01-25 Vaillant Gmbh Ungekühlter brennkammerschacht zur führung von brenngasen eines brenners
DE9415989U1 (de) * 1994-10-05 1996-02-01 Viessmann Werke Gmbh & Co, 35108 Allendorf Wärmedämmformstück
DE19502730A1 (de) * 1995-01-28 1996-08-01 Abb Management Ag Keramische Auskleidung
DE19530914A1 (de) * 1995-08-23 1996-05-09 Josef Hoesl Schichtaufbauverfahren für hochreflektierende, katalytische Oberflächen im Brennraum von Verbrennungskraftmaschinen

Also Published As

Publication number Publication date
EP0913641A2 (fr) 1999-05-06
ATE248324T1 (de) 2003-09-15
DE19748259A1 (de) 1999-05-06
EP0913641A3 (fr) 2000-05-03
DE59809403D1 (de) 2003-10-02

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