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WO2006089703A1 - Systeme de fenetre, systeme de diagnostic pour des processus de combustion et chambre de combustion - Google Patents

Systeme de fenetre, systeme de diagnostic pour des processus de combustion et chambre de combustion Download PDF

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Publication number
WO2006089703A1
WO2006089703A1 PCT/EP2006/001524 EP2006001524W WO2006089703A1 WO 2006089703 A1 WO2006089703 A1 WO 2006089703A1 EP 2006001524 W EP2006001524 W EP 2006001524W WO 2006089703 A1 WO2006089703 A1 WO 2006089703A1
Authority
WO
WIPO (PCT)
Prior art keywords
window
coating
combustion chamber
window device
oxidation catalyst
Prior art date
Application number
PCT/EP2006/001524
Other languages
German (de)
English (en)
Inventor
Claus Wahl
Original Assignee
Deutsches Zentrum für Luft- und Raumfahrt e.V.
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 Deutsches Zentrum für Luft- und Raumfahrt e.V. filed Critical Deutsches Zentrum für Luft- und Raumfahrt e.V.
Priority to EP06707104A priority Critical patent/EP1851482A1/fr
Publication of WO2006089703A1 publication Critical patent/WO2006089703A1/fr
Priority to US11/891,299 priority patent/US20080022992A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23—Oxides
    • 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
    • F23M11/00—Safety arrangements
    • F23M11/04—Means for supervising combustion, e.g. windows
    • F23M11/042—Viewing ports of windows
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/21—Oxides
    • C03C2217/228—Other specific oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/006—Ignition installations combined with other systems, e.g. fuel injection

Definitions

  • the invention relates to a window device for a space loaded with carbonaceous particles, in particular for a combustion chamber, which has at least one optically transparent window element.
  • window devices of the type described above are necessary.
  • the invention has for its object to provide a window device of the type mentioned, which can be used in a simple manner.
  • this object is achieved in the case of the above-mentioned window device in that the at least one window element is provided with a coating which comprises an oxidation catalyst material for breaking down carbonaceous window contaminants.
  • the window device On the at least one window element of the window device carbon-containing particles such as soot particles may precipitate or it may also form a tar compound on the at least one window element.
  • carbon-containing particles such as soot particles may precipitate or it may also form a tar compound on the at least one window element.
  • a coating of an oxidation catalyst material for carbon is provided.
  • carbon can be catalytically oxidized into volatile constituents, in particular in the combustion of hydrocarbons, so that window contaminants are chemically degradable. This provides a self-cleaning effect for the corresponding window device, which in turn ensures observability.
  • the solution according to the invention makes it possible, for example, to observe direct combustion processes, for example via a diagnostic system. Due to the self-cleaning effect, a high level of reliability is ensured in a quantitative evaluation of the observation. For example, the analysis results can then also be used to control the combustion.
  • the window device according to the invention can be provided as a separate device. It may also be part of an optical diagnostic system, for example, which comprises, for example, one or more optical fibers.
  • a light guide can be a window element and the coating is then arranged on the light guide.
  • the oxidation catalyst material is selected so that above a threshold temperature window contaminants are degradable.
  • window occupancy can be reduced even at lower temperatures.
  • window deposits with carbonaceous material above a temperature of about 300 0 C to 450 0 C are degradable.
  • the oxidation catalyst material comprises in particular a material from the 8th subgroup.
  • the coating may consist of such a material or other materials may be present in the coating. It is also possible that the coating has different oxidation catalyst materials.
  • the coating comprises platinum.
  • Platinum acts as an oxidation catalyst material, through which carbon can be converted chemically into volatile components.
  • the coating may be formed of platinum or comprise platinum.
  • the coating is made of platinum or platinum rodium.
  • yttrium or palladium is used as the oxidation catalyst material.
  • the oxidation catalyst material comprises ceria (CeO 2 ).
  • the coating can be whole or partial
  • a 4 754 t be made of ceria. It is expected that diminishes with ceria as oxy dationskatalysatormaterial the ignition temperature of carbon black at 300 0 C to 35O 0 C.
  • the coating can be easily produced by vapor deposition. As a result, it is possible to produce a layer thickness in the nanometer range or submicrometer range which has a sufficient oxidation catalyst property and, on the other hand, does not significantly impair the transparency of the window element.
  • the coating is subjected to a temperature treatment. This may provide for better adhesion of the corresponding layer;
  • the layer is sintered.
  • the coating forms a surface of the at least one window element, that is, the coating has on the window element to the outside (so that it can point into the combustion chamber).
  • the coating has to the interior of the loaded with carbonaceous particles space to reduce coming from the interior window pollution can.
  • a diagnostic system for combustion processes can be provided which comprises at least one optical sensor and one or more window devices according to the invention. Via the window device with the at least one optically transparent window element, electromagnetic signals can be decoupled and fed to an optical sensor for detection. By the solution according to the invention the signal extraction is ensured.
  • the solution according to the invention may be formed, for example, on a light guide or it may be provided a window device, which is arranged in front of a light guide.
  • the solution according to the invention can be used in particular in connection with a diagnostic system, as described in DE 199 01 795 A1.
  • according to the invention can provide a combustion chamber with a combustion chamber, which is provided with at least one window device according to the invention.
  • combustion chamber of such a combustion chamber can be observed via the at least one window device, with no mechanical cleaning of the
  • Figure 1 is a schematic representation of an embodiment of a
  • Combustion chamber which is provided with an embodiment of a window device according to the invention
  • Figure 2 is a schematic representation of an embodiment of a diagnostic system, which is arranged on a combustion chamber and
  • FIG. 3 shows a detail enlargement of the diagnostic system according to FIG. 2 in a sectional view.
  • a first embodiment of a window device according to the invention which is designated by 10 in FIG. 1, comprises a window element 12 which is optically transparent.
  • the window element 12 is made of quartz glass, for example.
  • the window element 12 is formed for example in the form of a window pane with parallel spaced planar surfaces 14, 16.
  • the Fe ⁇ sterelement 12 is held for example on a frame 18.
  • the window device 10 is seated on a combustion chamber 20; the frame 18 is fixed to a combustion chamber wall 22 and held therein.
  • the combustion chamber 20 has a combustion chamber 24, which is loaded by carbonaceous particles such as soot particles.
  • carbonaceous particles such as soot particles.
  • the carbonaceous particles formed during combustion (indicated by the reference numeral 26), for example, of hydrocarbons.
  • the window member 12 can be occupied; soot deposits, tar deposits, etc. may form on the window element 12. This degrades the optical transparency.
  • a coating 28 of the window element 12 is provided, which faces the combustion chamber 24.
  • This coating 28 contains an oxidation catalyst material or is formed by means of an oxidation catalyst material, by means of which carbon is catalytically oxidizable to volatile components.
  • the coating 28 is formed by means of platinum or platinum rodium or the coating contains platinum or platinum rodium as the oxidation catalyst material.
  • the coating 28 is formed by means of cerium dioxide (CeO 2 ) or the coating contains ceria as the oxidation catalyst material.
  • the oxidation catalyst material is vapor-deposited onto the window element 12, in particular for producing the coating 28.
  • the coating 28 forms a surface of the window element 12 which points into the combustion chamber 24.
  • a coating is subjected to a temperature treatment after its application in order to ensure a better adhesion of the thus modified coating 28.
  • the layer thickness is in the nanometer range (with a thickness of a few nanometers) or Submikrometer Suite.
  • the layer thickness should be comparable to the wavelength of light and in particular be smaller.
  • a pollution of the window member 12 can be reduced at least above certain temperatures, so that no mechanical cleaning is necessary. For example, it is thereby possible that carbonaceous contaminants are degraded on the window member 12 above a temperature of about 300 0 C to 450 0 C.
  • a window device according to the invention with one or more coated window elements can be arranged directly on a combustion chamber 20. It is also possible that one or more corresponding window devices are arranged on a space communicating with a combustion chamber 20, such as a chimney space.
  • a diagnostic system for combustion processes is provided with one or more window devices according to the invention.
  • FIG. 2 An example of a diagnostic system for combustion processes is shown schematically in FIG. 2 and designated there as a whole by 30. It comprises one or more diagnostic elements 32 which can be inserted into a combustion chamber 34 in order to detect electromagnetic radiation occurring in the combustion chamber 34.
  • the combustion chamber 34 is enclosed by a combustion chamber wall 36.
  • the diagnostic system 30 includes in particular one or more optical sensors.
  • the diagnostic element 32 is formed, for example, as a spark plug and includes the usual spark plug elements and functions.
  • a screw-in body 38 is provided, which can be screwed into a threaded bore 40 of the combustion chamber wall 36 and carries a ground electrode 42 on its side facing the combustion chamber 34. Usually, such a ground electrode 42 is bent.
  • the screw-in body 38 has an external thread 39.
  • a 4 754 t In the Einschraubenia 38 a ceramic body 44 is used, which isolates a high-voltage electrode 46 passing through this relative to the Einschraub stresses 38.
  • the high-voltage electrode 46 projects with a front end 48 over the ceramic body 44 and sits at a defined distance from the ground electrode 42 in order to generate the spark.
  • the ceramic body 44 is provided with a plurality of apertures 50 (FIG. 3), which extend from an end region 52 of the ceramic body 44 remote from the screw-in body 38 to a conically tapered front end region 54 of the ceramic body 44 with respect to the screw-in body 38 extend through this, up to a combustion chamber-side opening 56, which is preferably located near the combustion chamber-side end 28 of the high-voltage electrode 46 and in the region of a conical surface 58 of the front end portion 54.
  • the conical surface 58 preferably extends conically with respect to an axis 60 which is simultaneously the central axis of the high-voltage electrode 46.
  • a light guide 62 is inserted, which passes through the respective aperture 50 and ends with a combustion chamber-side optical fiber end 64.
  • the optical fiber end 64 is preferably arranged so that it still in the ceramic body 44 passing through the opening 50 of the combustion chamber side opening 56 thereof, so that between the combustion chamber side optical fiber end 64 and the combustion chamber side opening 56 a portion 66 of the aperture 50 remains, which serves to protect the combustion chamber-side optical fiber end.
  • the section 66 also serves to define an appendix for the electromagnetic radiation entering from the combustion chamber 34, which defines an apparatus A with which a detection of electromagnetic radiation from a spatial section 48 of the combustion chamber 34 is possible.
  • the optical fiber end 64 may be provided with a coating corresponding to the coating 28.
  • a window element is formed over the light guide itself, wherein the coating (indicated by reference numeral 70 in FIG. 3) ensures "self-cleaning" of the light guide end 64 against carbon deposits.
  • a window device 72 is arranged, which comprises a window element with a coating as described above.
  • the window device 72 By means of the window device 72, the section 66 and thus the light guide end 64 are mechanically closed relative to the combustion space 34, so that no carbonaceous particles can reach the light guide end 64.
  • the window device 72 with its oxidation catalyst material coating has a self-cleaning effect as described above.
  • the optical fiber ends 64 are shaped or possibly ground so that an average incident direction E of the electromagnetic radiation from the combustion space 34 forms an angle bisector of the apposition A obliquely to the central axis 60 and preferably also obliquely to a longitudinal direction 74 of the combustion chamber 34
  • a 4 754 t Breakthrough 50 may extend in a subsequent to the section 66 section 76 of the opening 50, wherein this section 76 extends to a combustion chamber 34 facing away opening of the aperture 50, from which, for example, the light guide 62 led out and guided to a diagnostic device 78 ,
  • the diagnosis creation device 60 comprises one or more optical sensors, wherein in particular for each light guide a separate optical sensor is provided.
  • a diagnostic system 30 as described above is disclosed in DE 199 01 795 and further explained there. This document is expressly incorporated by reference.
  • combustion processes in the combustion chamber 34 can be analyzed and a diagnosis can be made. On the basis of the diagnosis, for example, a control or regulation of the combustion processes take place.
  • the window device according to the invention which is formed either over the light guide with the coating 70 or through a separate window device 72
  • an occupancy with carbonaceous material such as soot and / or tar
  • a self-cleaning function can be provided.
  • the optical transparency is ensured, so that light signals can reach the diagnosis creation device 78 with its optical sensors.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Testing Of Engines (AREA)
  • Control Of Combustion (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

La présente invention concerne un système de fenêtre pour un espace chargé de particules contenant du carbone, en particulier pour une chambre de combustion (24). Ce système comprend au moins un élément de fenêtre optiquement transparent (12) qui présente un revêtement (28) comprenant un matériau catalyseur d'oxydation qui permet de dégrader des salissures de fenêtre contenant du carbone.
PCT/EP2006/001524 2005-02-22 2006-02-21 Systeme de fenetre, systeme de diagnostic pour des processus de combustion et chambre de combustion WO2006089703A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06707104A EP1851482A1 (fr) 2005-02-22 2006-02-21 Systeme de fenetre, systeme de diagnostic pour des processus de combustion et chambre de combustion
US11/891,299 US20080022992A1 (en) 2005-02-22 2007-08-09 Window device, diagnosis system for combustion processes, and combustion chamber

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005009285A DE102005009285B3 (de) 2005-02-22 2005-02-22 Fenstervorrichtung und Verwendung einer Fenstervorrichtung für ein Diagnosesystem für Verbrennungsvorgänge und für eine Brennkammer
DE102005009285.3 2005-02-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/891,299 Continuation US20080022992A1 (en) 2005-02-22 2007-08-09 Window device, diagnosis system for combustion processes, and combustion chamber

Publications (1)

Publication Number Publication Date
WO2006089703A1 true WO2006089703A1 (fr) 2006-08-31

Family

ID=36095856

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/001524 WO2006089703A1 (fr) 2005-02-22 2006-02-21 Systeme de fenetre, systeme de diagnostic pour des processus de combustion et chambre de combustion

Country Status (4)

Country Link
US (1) US20080022992A1 (fr)
EP (1) EP1851482A1 (fr)
DE (1) DE102005009285B3 (fr)
WO (1) WO2006089703A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105672A1 (fr) 2008-03-27 2009-09-30 Fondis Produit catalytique de nettoyage appliqué par l'utilisateur sur la face intérieure d'une vitre d'un appareil de chauffage à combustion
DE102008047236B3 (de) * 2008-09-08 2010-06-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung und Verfahren zum Zünden eines Brennstoff-Oxidator-Gemisches
WO2011032776A1 (fr) * 2009-09-15 2011-03-24 Robert Bosch Gmbh Fenêtre de chambre de combustion

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
FR2929374B1 (fr) * 2008-03-27 2014-11-21 Fondis Sa Vitre autonettoyante pour appareil de chauffage a combustion et a paroi vitree
EP2310087B1 (fr) 2008-04-29 2016-03-23 Medtronic, Inc. Modification de programme de thérapie sur la base d'un modèle de domaine de thérapie
FR2939127A1 (fr) * 2008-11-28 2010-06-04 Saint Gobain Paroi transparente autonettoyante d'enceinte chauffante
DE102010064023A1 (de) * 2010-12-23 2012-06-28 Robert Bosch Gmbh Laserzündeinrichtung für eine Brennkraftmaschine
JP6088939B2 (ja) * 2013-08-26 2017-03-01 株式会社島津製作所 プラグ内蔵型光学測定用プローブ及びこれを備えた光学測定装置
DE102016122132A1 (de) 2015-11-19 2017-06-08 Schott Ag Katalytisch aktives Material, Verfahren zu dessen Herstellung sowie dessen Verwendung

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WO2004024352A1 (fr) * 2002-09-10 2004-03-25 Ppg Industries Ohio, Inc. Procede et dispositif de nettoyage d'une surface photoactive et/ou hydrophile

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US4048978A (en) * 1972-03-02 1977-09-20 Glaverbel-Mecaniver Heat insulating screen
FR2771031A1 (fr) * 1997-11-17 1999-05-21 Claude Philippe Procede de nettoyage d'une plaque transparente exposee a des fumees et moyens pour la mise en oeuvre du procede
DE19901795A1 (de) * 1999-01-19 2000-07-27 Deutsch Zentr Luft & Raumfahrt Verbrennungsdiagnosesystem
US6024084A (en) * 1999-02-22 2000-02-15 Engineered Glass Products, Llc Double sided heat barrier glass with clear CVD coating and method of making the same
US20030113550A1 (en) * 2001-09-14 2003-06-19 Millett Frederick A. Heat barrier window utilizing a combination of coatings
WO2004024352A1 (fr) * 2002-09-10 2004-03-25 Ppg Industries Ohio, Inc. Procede et dispositif de nettoyage d'une surface photoactive et/ou hydrophile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105672A1 (fr) 2008-03-27 2009-09-30 Fondis Produit catalytique de nettoyage appliqué par l'utilisateur sur la face intérieure d'une vitre d'un appareil de chauffage à combustion
FR2929375A1 (fr) * 2008-03-27 2009-10-02 Fondis Sa Procede d'auto-nettoyage en fonctionnement de la face interieure d'une vitre d'un appareil de chauffage
DE102008047236B3 (de) * 2008-09-08 2010-06-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung und Verfahren zum Zünden eines Brennstoff-Oxidator-Gemisches
WO2011032776A1 (fr) * 2009-09-15 2011-03-24 Robert Bosch Gmbh Fenêtre de chambre de combustion

Also Published As

Publication number Publication date
EP1851482A1 (fr) 2007-11-07
US20080022992A1 (en) 2008-01-31
DE102005009285B3 (de) 2006-09-21

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