EP0831277B1 - Four avec un catalyseur - Google Patents

Four avec un catalyseur Download PDF

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Publication number
EP0831277B1
EP0831277B1 EP97114675A EP97114675A EP0831277B1 EP 0831277 B1 EP0831277 B1 EP 0831277B1 EP 97114675 A EP97114675 A EP 97114675A EP 97114675 A EP97114675 A EP 97114675A EP 0831277 B1 EP0831277 B1 EP 0831277B1
Authority
EP
European Patent Office
Prior art keywords
baking oven
catalyser
catalyst
catalysers
muffle
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
EP97114675A
Other languages
German (de)
English (en)
Other versions
EP0831277A1 (fr
Inventor
Johann Klement
Christian Dipl.-Ing. Zimmermann
Erich-Olaf Fischer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP0831277A1 publication Critical patent/EP0831277A1/fr
Application granted granted Critical
Publication of EP0831277B1 publication Critical patent/EP0831277B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2007—Removing cooking fumes from oven cavities
    • F24C15/2014—Removing cooking fumes from oven cavities with means for oxidation of cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type

Definitions

  • the present invention relates to an oven according to the preamble of Claim 1 and a catalyst according to the preamble of claim 7.
  • Such a catalyst is known from German specification DE 28 17 101, the catalyst being small through a ceramic disc with a multitude of holes Diameter is formed. During the cooking process or during a subsequent pyrolytic self-cleaning process flow the resulting Gases through the catalyst and are burned there or converted catalytically.
  • Another catalyst is known from German published application DE 41 39 904 A1, wherein the catalyst is made from a self-supporting wire mesh. As Wire is particularly suitable for an aluminum-containing alloy, if necessary Contains cerium. With the help of the catalyst is in the closed oven muffle circulating air cleaned.
  • a catalyst is known from German published patent application DE 41 42 336 A1 known that sits in a vapor outlet opening in the ceiling area of the oven muffle. As a result, vapors removed from the oven become a catalytic reaction Burn or neutralize unpleasant odors.
  • the object of the present invention is an oven and a catalyst to provide with which an improved cleaning of the gases is possible.
  • the catalytic converter has at least two fluidically one behind the other arranged partial catalysts.
  • palladium as The catalyst material used to break down formaldehyde has a platinum coating especially to reduce carbon monoxide. So there is a risk of adverse mutual odor influence of the two catalytic converters is reduced an uncoated, if appropriate, between the at least two partial catalysts coarser mesh neutral filter arranged. This also contributes to one Uniformization of the flow through the catalyst.
  • the catalyst is advantageously formed by a wire mesh, in particular good flowability of the catalyst and at the same time a large surface for to provide the catalytic reaction.
  • the catalyst is in a flow-through, Pot-shaped housing arranged. This simplifies manufacture and assembly of the catalyst. The same purpose and the easy cleanability of the The measures according to claim 4 serve as a catalyst.
  • the catalytic effect is particularly pronounced at the high temperatures that occur in pyrolytic self-cleaning operation.
  • An oven 1 has a housing 3 which encloses an oven muffle 5. This is dressed in a conventional manner with a heat insulation material and on her Front can be closed with an oven door 7.
  • the door consists of one metallic door floor 9, in which a viewing window 11 is held.
  • door 7 In the front area of the On the door base 9, door 7 is a front window 13 that is spaced apart from the viewing window attached.
  • Oven 1 is for pyrolytic self-cleaning operation Suitable, all components according to the occurring, especially are designed for high operating temperatures.
  • a vapor opening 21 is also provided in this, which consists of several individual openings 22 (Fig. 2). Via a funnel-shaped connector 23, the vapor opening 21 is connected to a blow-out duct 25 which opens into the open above the door 7 in the front area of the oven 1. In the blow-out duct 25, a fan 27 for sucking air from the oven muffle 5 is arranged.
  • a catalyst 35 is arranged in the area of the vapor opening 21.
  • the catalyst has a cup-shaped housing 37 made of a good heat-conducting material, in particular Aluminum, in the bottom of which a plurality of suction openings 39 are formed.
  • a fastening opening 41 through which a fastening screw 43 can be pushed through the catalyst 35 and in a mounting plate 45 of the top wall 20 of the oven muffle 5 is screwed can be.
  • a bent peripheral edge 47 of the catalyst housing 37 is thereby pressed against the top wall 20.
  • In the direction of flow there are three flat ones in a row Wire mesh arranged, the large areas of contact with each other and to the Have the inner wall of the housing 37 and the top wall 20.
  • the first Wire mesh forms the first partial catalytic converter 49.
  • the wire used for this is included Palladium coated and is used in particular to break down formaldehyde.
  • the second Wire mesh is through an uncoated metal wire as a neutral filter 51 educated.
  • the flow resistance of the neutral filter 51 is lower than that of the first partial catalyst 49 and a second partial catalyst 53, the fluidic after the neutral filter 51 and spatially separated from the first partial catalyst 49 is arranged.
  • the knitted fabric of the second partial catalyst 53 is made of a platinum-coated one Metal wire formed for burning or neutralizing other odor or pollutants.

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

Claims (8)

  1. Four de cuisson (1) avec un catalyseur (35) et une chambre (5) de four de cuisson qui peut être fermée et qui peut être chauffée par au moins un élément chauffant (19), une surface active du catalyseur étant formée par une couche de métal noble, caractérisé en ce que le catalyseur (35) sert à décomposer le formaldéhyde libéré pendant le chauffage de la chambre (5) du four de cuisson, en ce que le catalyseur (35) présente au moins deux catalyseurs partiels (49, 53) disposés l'un derrière l'autre dans le sens de l'écoulement et en ce que les matériaux des couches de métal noble des deux catalyseurs partiels (49, 53) au moins présents sont différents.
  2. Four de cuisson selon la revendication 1, caractérisé en ce que le catalyseur (35) est formé par un tricot de fils.
  3. Four de cuisson selon la revendication 1 ou 2, caractérisé en ce que le catalyseur (35) est disposé dans un boítier (37) en forme de calotte qui peut être traversée.
  4. Four de cuisson selon la revendication 3, caractérisé en ce que le boítier (37) présente une partie de fixation par laquelle le catalyseur est fixé de manière amovible, en fonction du fonctionnement, sur une paroi (45) de la chambre du four de cuisson.
  5. Four de cuisson selon l'une des revendications précédentes, caractérisé en ce que le catalyseur (35) est disposé dans la région d'un corps de chauffage supérieur (19) de la chambre (5) du four de cuisson.
  6. Four de cuisson selon l'une des revendications précédentes, caractérisé en ce que le catalyseur est disposé dans un four de cuisson qui présente des moyens de fonctionnement nécessaires pour un fonctionnement auto-nettoyant par pyrolyse.
  7. Catalyseur (35) destiné à être utilisé dans un four de cuisson qui présente une chambre (5) de four de cuisson qui peut être fermée et qui est chauffée par au moins un élément chauffant, la surface active étant formée par une couche de métal noble, caractérisé en ce que le catalyseur (35) sert à décomposer le formaldéhyde qui est libéré lors du chauffage de la chambre (5) du four de cuisson et en ce que le catalyseur (35) présente au moins deux catalyseurs partiels (49, 53) disposés l'un derrière l'autre dans le sens de l'écoulement, les matériaux des couches de métal noble des deux catalyseurs partiels étant différents.
  8. Catalyseur selon la revendication 7, caractérisé en ce qu'entre les au moins deux catalyseurs partiels (49, 53) est disposé un filtre neutre (51) non revêtu.
EP97114675A 1996-09-20 1997-08-25 Four avec un catalyseur Expired - Lifetime EP0831277B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638665A DE19638665A1 (de) 1996-09-20 1996-09-20 Backofen mit einem Katalysator
DE19638665 1996-09-20

Publications (2)

Publication Number Publication Date
EP0831277A1 EP0831277A1 (fr) 1998-03-25
EP0831277B1 true EP0831277B1 (fr) 2003-11-19

Family

ID=7806399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114675A Expired - Lifetime EP0831277B1 (fr) 1996-09-20 1997-08-25 Four avec un catalyseur

Country Status (2)

Country Link
EP (1) EP0831277B1 (fr)
DE (2) DE19638665A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818289A1 (de) * 1998-04-23 1999-10-28 Bsh Bosch Siemens Hausgeraete Backofen mit Filtergehäuse
DE19907554A1 (de) 1999-02-22 2000-08-31 Bsh Bosch Siemens Hausgeraete Katalysator für einen Backofen
DE19912453A1 (de) * 1999-03-19 2000-09-21 Bsh Bosch Siemens Hausgeraete Katalysator für den Backofen
DE10013884C2 (de) * 2000-03-21 2002-05-08 Aeg Hausgeraete Gmbh Garofen
EP1160514A1 (fr) * 2000-06-02 2001-12-05 Whirlpool Corporation Four à nettoyage par pyrolyse
US7138092B2 (en) * 2001-04-06 2006-11-21 Realist Technology Ltd. Clip-mounted catalyst device
DE102004055153A1 (de) * 2004-11-16 2006-05-18 Electrolux Home Products Corporation N.V. Garofenmuffel
DE102005003975A1 (de) * 2005-01-28 2006-08-03 Electrolux Home Products Corp. N.V. Gargerät
DE102005045276A1 (de) * 2005-09-22 2007-04-05 Electrolux Home Products Corporation N.V. Ofen, insbesonder Küchen-Gar- oder Backofen
DE102006005807A1 (de) * 2006-02-08 2007-08-16 BSH Bosch und Siemens Hausgeräte GmbH Filterelement für Dunstabzugshaube
EP2273202B1 (fr) * 2009-07-08 2015-10-21 Electrolux Home Products Corporation N.V. Four de cuisson avec système de filtre catalytique
EP2657615A1 (fr) * 2012-04-27 2013-10-30 Miele & Cie. KG Appareil de cuisson et dispositif de catalyseur
DE102013107361A1 (de) * 2013-07-11 2015-01-15 Miele & Cie. Kg Gargerät und Katalysatoreinrichtung
EP3059504A1 (fr) * 2015-02-19 2016-08-24 Electrolux Appliances Aktiebolag Four de cuisine
DE102015205498A1 (de) * 2015-03-26 2016-09-29 BSH Hausgeräte GmbH Gargerät mit Abluftkatalysator
DE102021212941A1 (de) 2021-11-17 2023-05-17 BSH Hausgeräte GmbH Backofen mit spezifischem Katalysator, Verfahren
DE102022102905A1 (de) 2022-02-08 2023-08-10 Miele & Cie. Kg Gargerät mit Wrasenreinigung und Verfahren zum Betreiben des Gargeräts

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828404A (en) * 1955-07-01 1958-03-25 Gen Motors Corp Domestic appliance
US2846557A (en) * 1955-09-09 1958-08-05 Philco Corp Vapor treating means
DE1801668A1 (de) * 1967-10-13 1969-08-07 United Carr Inc Katalytischer Brenner und Verfahren zur Bildung einer katalytischen Einheit
DE1817529A1 (de) * 1968-01-02 1969-08-14 Gen Electric Tuer fuer einen kombinierten elektrischen und elektronischen Herd
US3474226A (en) * 1967-08-10 1969-10-21 Kelvinator Inc Range oven heating control circuit for pyrolytic oven cleaning
US3536457A (en) * 1968-02-21 1970-10-27 Gen Electric Catalytic oxidation unit for domestic oven exhaust
DE1954744A1 (de) * 1969-10-30 1971-05-06 Taste Master Inc Ofen mit einem Gehaeuse und einem ins Freie hinausfuehrenden Auslassdurchgang
DE2305025A1 (de) * 1973-02-02 1974-08-08 Burger Eisenwerke Ag Verfahren zum selbsttaetigen reinigen der innenwaende eines brat- oder backofens
DE2309873A1 (de) * 1973-02-28 1974-08-29 Burger Eisenwerke Ag Verfahren zum selbsttaetigen reinigen der innenwaende eines brat- oder backofens
DE2803910A1 (de) * 1977-02-11 1978-08-17 Philips Nv Kochofen mit gezwungenem heizgasumlauf in der muffel und mit katalytischen filterelementen
DE7836631U1 (de) * 1978-12-11 1979-03-22 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Garbehaelter
DE2817101A1 (de) * 1978-04-19 1979-10-25 Bosch Siemens Hausgeraete Elektrisch beheizter garbehaelter, insbesondere pyrolytisch selbstreinigender backofen
DE2640684C2 (de) * 1975-09-11 1981-11-26 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Brat- bzw. Kochofen
DE2811650C2 (de) * 1978-03-17 1983-02-03 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Katalytischer Nachverbrenner
US4481404A (en) * 1982-12-22 1984-11-06 General Electric Company Turn-off control circuit for self-cleaning ovens
DE3346019C2 (de) * 1983-12-20 1985-11-07 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen
EP0209887A2 (fr) * 1985-07-23 1987-01-28 E.G.O. Elektro-Geräte Blanc u. Fischer Catalyseur pour un four électrique
EP0220119B1 (fr) * 1985-10-16 1989-11-02 Compagnie Europeenne Pour L'equipement Menager "Cepem" Four de cuisson à nettoyage par pyrolyse
EP0500471A1 (fr) * 1991-02-21 1992-08-26 Société SCHOLTES Four de cuisson domestique
DE4139904A1 (de) * 1991-12-04 1993-06-09 Kueppersbusch Ag, 4650 Gelsenkirchen, De Back- oder bratofen mit einem katalysator
DE4142336A1 (de) * 1991-12-20 1993-06-24 Bosch Siemens Hausgeraete Wrasenleitung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB775549A (en) * 1953-09-21 1957-05-29 Harold Russell Suter Improvements in or relating to catalytic fume incineration
US3121158A (en) 1962-12-13 1964-02-11 Gen Electric Household cooking ovens and methods of cleaning the same
AT381947B (de) * 1977-04-27 1986-12-10 Teukros Ag Reaktionsfaehiger aktivator fuer die polykondensation von harnstoff- bzw. melaminformaldehyd-harzen
DE3929251C2 (de) 1989-09-02 1998-04-09 Scheffer Kludi Armaturen Sanitäre Einhebelmischbatterie
FR2699831B1 (fr) * 1992-12-30 1995-02-03 Berger Produits Dispositif d'épuration d'air, notamment de désodorisation, par destruction catalytique des espèces organiques présentes dans l'air à épurer.

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828404A (en) * 1955-07-01 1958-03-25 Gen Motors Corp Domestic appliance
US2846557A (en) * 1955-09-09 1958-08-05 Philco Corp Vapor treating means
US3474226A (en) * 1967-08-10 1969-10-21 Kelvinator Inc Range oven heating control circuit for pyrolytic oven cleaning
DE1801668A1 (de) * 1967-10-13 1969-08-07 United Carr Inc Katalytischer Brenner und Verfahren zur Bildung einer katalytischen Einheit
DE1817529A1 (de) * 1968-01-02 1969-08-14 Gen Electric Tuer fuer einen kombinierten elektrischen und elektronischen Herd
US3536457A (en) * 1968-02-21 1970-10-27 Gen Electric Catalytic oxidation unit for domestic oven exhaust
DE1954744A1 (de) * 1969-10-30 1971-05-06 Taste Master Inc Ofen mit einem Gehaeuse und einem ins Freie hinausfuehrenden Auslassdurchgang
DE2305025A1 (de) * 1973-02-02 1974-08-08 Burger Eisenwerke Ag Verfahren zum selbsttaetigen reinigen der innenwaende eines brat- oder backofens
DE2309873A1 (de) * 1973-02-28 1974-08-29 Burger Eisenwerke Ag Verfahren zum selbsttaetigen reinigen der innenwaende eines brat- oder backofens
DE2640684C2 (de) * 1975-09-11 1981-11-26 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Brat- bzw. Kochofen
DE2803910A1 (de) * 1977-02-11 1978-08-17 Philips Nv Kochofen mit gezwungenem heizgasumlauf in der muffel und mit katalytischen filterelementen
DE2811650C2 (de) * 1978-03-17 1983-02-03 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Katalytischer Nachverbrenner
DE2817101A1 (de) * 1978-04-19 1979-10-25 Bosch Siemens Hausgeraete Elektrisch beheizter garbehaelter, insbesondere pyrolytisch selbstreinigender backofen
DE7836631U1 (de) * 1978-12-11 1979-03-22 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Garbehaelter
US4481404A (en) * 1982-12-22 1984-11-06 General Electric Company Turn-off control circuit for self-cleaning ovens
DE3346019C2 (de) * 1983-12-20 1985-11-07 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen
EP0209887A2 (fr) * 1985-07-23 1987-01-28 E.G.O. Elektro-Geräte Blanc u. Fischer Catalyseur pour un four électrique
EP0220119B1 (fr) * 1985-10-16 1989-11-02 Compagnie Europeenne Pour L'equipement Menager "Cepem" Four de cuisson à nettoyage par pyrolyse
EP0500471A1 (fr) * 1991-02-21 1992-08-26 Société SCHOLTES Four de cuisson domestique
DE4139904A1 (de) * 1991-12-04 1993-06-09 Kueppersbusch Ag, 4650 Gelsenkirchen, De Back- oder bratofen mit einem katalysator
DE4142336A1 (de) * 1991-12-20 1993-06-24 Bosch Siemens Hausgeraete Wrasenleitung

Also Published As

Publication number Publication date
DE59711022D1 (de) 2003-12-24
EP0831277A1 (fr) 1998-03-25
DE19638665A1 (de) 1998-03-26

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