WO2016150661A1 - Appareil de cuisson pourvu d'un catalyseur d'air sortant - Google Patents

Appareil de cuisson pourvu d'un catalyseur d'air sortant Download PDF

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Publication number
WO2016150661A1
WO2016150661A1 PCT/EP2016/054309 EP2016054309W WO2016150661A1 WO 2016150661 A1 WO2016150661 A1 WO 2016150661A1 EP 2016054309 W EP2016054309 W EP 2016054309W WO 2016150661 A1 WO2016150661 A1 WO 2016150661A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooking appliance
catalyst
appliance according
tube
grill
Prior art date
Application number
PCT/EP2016/054309
Other languages
German (de)
English (en)
Inventor
Frank JÖRDENS
Jürgen Salomon
Philipp Schaller
Gerhard Schmidmayer
Original Assignee
BSH Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Hausgeräte GmbH
Publication of WO2016150661A1 publication Critical patent/WO2016150661A1/fr

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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

Definitions

  • the present invention relates to a cooking appliance. Background of the invention
  • a generic cooking appliance is known for example from EP 1 378 71 1 A2.
  • an electric heater is used in which in an opening of a muffle wall.
  • an outlet opening leading to a vapor outlet is provided in which a catalyst which molds the outlet opening is inserted.
  • This catalyst decomposes fats contained in the vapor or compounds causing "offensive frying odor.”
  • This prior art oven there is the problem that it is often difficult to bring the catalyst to a predetermined operating temperature so that it has the maximum efficiency, ie
  • Another oven with a catalyst for odor or fat removal in the vapor is known, for example, from EP 0 209 887 A2
  • This annular heating element in turn surrounds a catalyst formed from a tube filled with a catalytically active material, this unit consisting of a fan, annular heating element and catalytic converter between a rear wall of the unit of ens forming muffle wall and a baffle wall provided.
  • the circulating in the cooking chamber in circulation air flows through openings in the baffle in the fan and is guided by this radially outward on the ring heater and the catalyst.
  • the catalyst here is to be understood as meaning a one-part or multi-part structural unit which has such catalytic properties at least in regions that at least partial removal of odor or fat in the vapor is achieved.
  • the catalyst should not be part of the muffle wall, but spaced from it, be provided between the heater and the muffle wall. So at least one part, i. a region of the catalyst should extend between the heater and the muffle wall.
  • the muffle wall and the heater does not exclude that the catalyst z. B. directly, so without gap, on the heating device rests or is formed by a coating of the heater.
  • the catalyst is also not only spaced from the muffle wall but also spaced from the heater.
  • the catalyst is thus designed as a structural unit, which may be one or more parts, which is at least partially provided between the muffle wall and the heater.
  • This subregion is furthermore preferably aligned substantially parallel to the muffle wall and preferably simultaneously also parallel to the heating device.
  • this region or part of the catalyst is provided at least the region of the catalyst which is provided between the muffle wall and the heating device, in particular preferably the entire structural unit forming the catalyst, is oriented parallel to the muffle wall and is particularly preferably also simultaneously aligned as being parallel to the heating device.
  • the catalyst is provided between the muffle wall and the heating device, it is achieved that the catalyst is heated substantially immediately by the heating device during operation of the latter, and that for
  • Wrasenauslass flowing fumes can flow to the catalyst.
  • Wrasenauslass usually goes from an outlet opening in a muffle wall of the muffle.
  • the electric heater is designed as a projecting into the oven grill, preferably a grill for the operation of top or bottom heat, as is well known in the art.
  • grilling is z. B. around a meandering curved metal rod having at least one preferably two, three or more turns.
  • this metal rod ie the grill, two parallel aligned side by side provided fastener-side ends, via which a heating voltage is applied.
  • a grill can also be formed only by a straight-line extending rod-shaped element, which is energized via opposite ends, or by a substantially U-shaped element with mutually parallel bar legs whose fastening-side ends are provided for energizing side by side.
  • this grill protrudes into the oven, ie preferably no baffle between the cooking chamber and the grill is provided.
  • this embodiment distinguishes the grill from the known for so-called Um Kunststoffbacköfen RingAlbkör- pern.
  • At least parts of the catalyst are thus provided between the grill and the muffle wall, wherein in particular this part of the catalyst is also aligned parallel to the grill.
  • the catalyst is formed by a tube, which consists of at least one heating element of the grill e.g. a portion of the meanderförigen metal rod is penetrated.
  • the tube surrounds the entire grill in a circumferential direction of the grill. At least, however, a part of the grill also penetrates part of the catalyst tube.
  • the tube surrounding the grill is heated substantially by heat radiation and optionally in addition to a small portion, also by convection.
  • such a tube can be designed as a one-piece element and, for example, be slotted along the grill along its length.
  • such a tube may also be formed of a plurality of shell elements, in particular of two half shells.
  • the half shells lie directly against each other, so that a closed tube is formed. Rather, here too, the view comes into focus, that as long as the envelope surface of the catalyst walls has a tubular configuration, the feature of the tube is met.
  • such a pipe does not have to have a round cross-section, but merely to provide an envelope-like receiving space for the grill and preferably to be connected to the outlet opening leading to the vapor outlet.
  • the tube is formed substantially cylindrical.
  • the tube communicates with the so
  • the vapors enters only at its end openings in the cavity formed by the tube, in which the grill protrudes, and is through this cavity, for. passed via a outgoing from the pipe flow connection to the outlet opening.
  • the vapor can also pass through these recesses in the cavity formed by the tube and be transferred from there into the Wrasenauslass.
  • the vapor flows only through the pipe and preferably over the areas of the cavity in which the grill protrudes to Wrasenauslass.
  • the tube extends perpendicular to the Wrasenauslass. This is especially the case when the Wrasenauslass is formed on the upper side of the cooking appliance.
  • a further piece of pipe goes from the pipe, which leads to the outlet opening or is connected to it and thus connects the pipe with the vapor outlet.
  • This pipe section can be integrated RAL be provided on the pipe or attached as a separate element, for example by plug connection to the pipe.
  • this further tube piece can serve as a fastening flange for the tube, i. to serve the catalyst.
  • the catalyst is formed by a T-shaped in its cross-section unit, wherein the tube into which the grill at least partially protrudes, the roof of the Ts and the pipe section, which for
  • Wrasenauslass leads forming the base of Ts.
  • the Wrasenauslass is in each case the fluidic connection to the environment, which emerges from an opening, which opens det in the cooking chamber, seen.
  • one end of the pipe is fastened to a holding flange for the grill and accordingly surrounds in particular a base region of the grill circumferentially. So far as it is in the grill to such, in which the two rod legs parallel to each other at a mounting end, so the tube surrounds at least these mutually parallel bar legs.
  • the attachment-side end of the grill and the tube thus run substantially coaxially with each other.
  • the length of the tube may also be limited (in the following sub-tube) to essentially form a sleeve which only has the neck-shaped attachment-side end, i.
  • the grill surrounds the base area of the grill, and as soon as the grill widens again in the direction of the cooking space, the grill is free so that it does not protrude from the pipe into the cooking space.
  • the grill is designed as a folding grill.
  • two alternative embodiments are offered here.
  • the pipe can be connected to the grill in such a way that the grill together with the pipe can be moved from a first position for the baking operation into a second position for a cleaning of the grill and / or pipe.
  • folding mechanisms for the grill are well known.
  • the tube or the partial tube is connected to the vapor outlet, it should therefore be ensured that a plug connection is provided between the vapor outlet and the catalyst-forming tube and / or the tube piece leading to the vapor outlet and the tube forming the catalyst.
  • the tube may be formed from at least two shell elements, wherein that shell element, which is provided on the side facing away from the muffle wall side of the grill can be removed or folded down; the latter applies insofar as it is fastened to the other shell element via one or more hinges
  • this is not formed as a tube but as a plate element, which is provided between the muffle wall and the grill and preferably of both spaced.
  • Such a plate element can have essentially any desired geometry, both in plan view and in cross-sectional view, as far as the casual view of a plate-like element results.
  • a circular or oval in plan geometry is provided, which projects beyond the outlet to the Wrasenauslass so far, so that at least one overlap area between muffle wall and plate element is formed.
  • such a plate segment may also mimic the geometry of the muffle wall to which the plate element is adjacent, but preferably be dimensioned (in plan view) smaller than this muffle wall so that a gap exists between the edge or edges of the plate element and the to the muffle wall opposite the plate member is adjacent, then form muffle walls.
  • the plate element is heated directly by the heating device, in particular by the grill, and heated primarily by radiant heat and, secondly, the vapor can flow over the aforementioned gap and the gap between the plate element and the substantially parallel thereto Muffelwand are passed to the Wrasenauslass.
  • the vapor outlet or the outlet opening in the muffle wall is preferably provided on the muffle wall which runs parallel to the plate element and adjacent to it in the case where the catalyst is designed as a plate element.
  • the plate element may be attached to the adjacent muffle wall via spacers, alternatively at its edges at the muffle walls adjacent to the edges and / or directly, i. be attached directly to the heater itself.
  • a flow channel is formed to the Wrasenauslass between the plate member and this adjacent and parallel to this muffle wall. This means that substantially all of the vapor can only reach the vapor outlet via this flow channel.
  • the plate member is formed perpendicular to the Wrasenauslass and projects beyond the leading to Wrasenauslass outlet. Because the plate element at least partially projects beyond the outlet opening, first a flow channel can be formed between the muffle wall and the plate element, since otherwise the vapor can pass directly into the vapor outlet without necessarily coming into contact with the plate element.
  • the Wrasenauslass is provided at the top of the muffle. That is, in particular, therefore, the outlet opening is provided on an upper muffle wall, from which the Wrasenauslass goes off.
  • structural engineering equipment especially building construction equipment in mind. That is, for example, in a kitchen such a cooking appliance is not installed below the worktop, but at least partially above the worktop in particular on chest or operating height of the operating staff.
  • the Wrasenauslass as far as it is provided on an upper muffle wall to connect to an exhaust duct.
  • the present invention next to long known ovens also called multifunction devices, in addition to the thermal heating of particular food by means of an electric heater and other functional elements such.
  • B. microwave heating, and / or Dampfgar Anlagenen may contain.
  • a cooking appliance is not limited to a single cooking chamber, but rather it can also be provided several cooking chambers within a housing.
  • the catalyst is provided adjacent to the heating device in such a way that the optimum operating temperature of the catalyst is achieved essentially only by the radiant heat of the heating device, in particular at a normal operating temperature.
  • the optimum operating temperature of the catalyst i. H. that a significant odor removal effect occurs, it is preferably a temperature between 200 ° and 800 ° C, more preferably 200 ° and 350 ° C or alternatively 350 ° to 700 ° C.
  • Typical operating temperatures of a cooking appliance are between 160 ° and 270 ° C. This means that the air in the cooking appliance is heated to this temperature. Any temperature in this range can be adjusted via a setting on the cooking appliance. It goes without saying that due to the air exchange, the temperature of the heater, such as the grill, must be several degrees above the operating temperature of the cooking appliance, in particular 10 ° to 80 ° C, preferably 20 ° to 40 ° C, in particular 30 ° C. above the operating temperature of the oven.
  • the optimum operating temperature of the catalyst is about the same as the temperature of the heater or about 20 ° C lower Temperature than that of the heater.
  • the optimum operating temperature of the catalyst is about 20 ° C higher than the operating temperature of the heater.
  • the catalyst is preferably a structural unit whose surface has a catalytic coating. Ie. at least a catalytically active coating should be applied at least in some areas on a surface of the assembly facing the heating device.
  • the inner wall of the tube should be coated at least in some areas, but preferably completely with a catalytically active material.
  • the surface facing the muffle wall should preferably be provided with a catalytic coating, i. H. the surface facing away from the heater.
  • the assembly of a material such as in particular of a metallic material may be formed, which has catalytically active properties.
  • the catalyst i. H. the structural unit may be filled with a porous body or porous bodies and / or a wire mesh which in itself has catalytic properties or else which is provided with a catalytically active coating.
  • the tube can be filled as such with the porous body, or the porous bodies, or the wire mesh or both in mixture or partially filled.
  • the tube can be designed as a double-walled, apertured housing, e.g. B. in particular in lattice form and within the housing, so between the pipe walls, the porous body, or the porous body, and / or the wire mesh to be introduced.
  • this plate member as such may have a plate-like apertured housing having a cavity in which the aforementioned catalytically active materials are filled are.
  • a grid-like housing may be provided.
  • the aforementioned catalytically active material may be introduced into the flow channel formed between the muffle wall and the plate element. In any case, this catalytically active material should preferably be able to be heated by heat radiation from the heater to the predetermined optimum operating temperature.
  • the catalytically active material contains noble metals, their mixtures or their compounds, in particular Pt, Pd, Au, Nb and, alternatively or additionally
  • an air circulating device and a ring heater for recirculation mode is additionally provided.
  • a heating device of the cooking appliance is a grill for the top or bottom heat mode, therefore, a second heater should be provided for the recirculation mode.
  • This annular heating element may preferably be surrounded by a further catalyst, as described in EP 0 209 887 A2, the disclosure content of which is hereby included in the present application.
  • the efficiency of the odor and fat removal from the vapor can be further increased.
  • Figure 1A a schematic embodiment of a high-installation oven
  • Figure 1 B a schematic representation of an upper part of a first embodiment of the invention
  • Figure 1 C a schematically illustrated upper part of a baking oven, according to a second embodiment of the invention.
  • a high-installation kiln shown in FIG. 1A has a muffle 1 and, on the upper side, a vapor outlet 2, which leaves from an upper muffle wall 3 via an outlet opening 2a.
  • the muffle 1 surrounds, by means of the upper muffle wall 3 of a lower muffle wall 9, two lateral muffle walls 5, and a rear muffle wall, not shown, a cooking space 4 in which a food can be heated.
  • a grill 1 1 Arranged on the upper side and parallel to the upper muffle wall 3 is a grill 1 1.
  • FIGS. 1B and 1C show two different exemplary embodiments, this upper region with the grill 11 and the upper muffle wall 3 aligned parallel thereto. Identical elements are designated in these figures and in Figure 1 with the same reference numerals.
  • FIG. 1B shows a T-shaped catalyst module 13 in its cross-sectional view, which is formed from a tube 14 and a tube piece 15 extending vertically therefrom.
  • the pipe section 15 is inserted into the outlet opening 2a and fixed there.
  • the grill 1 1 extends through the tube 14 in its longitudinal direction.
  • the tube 14 is formed of an upper shell member and a lower shell member, which can not be seen in the schematic drawing.
  • the tube 14 has at opposite sides in extension to each other aligned openings 14a, 14b, over which, as the arrows in Figure 1 B show the vapor through the tube 14 via the sub-tube 15 in the Wrasenauslass 2 is passed.
  • both the tube 14 and the sub-tube 15 is provided with a catalytically active coating.
  • the catalytic coating is heated by radiant heat of the grill and is brought during operation of the oven to the appropriate temperature.
  • a plate element 16 is provided between the grill 11 and the upper muffle wall 3 as the catalyst module 13 instead of the tube 14 shown in FIG. 1B, so that a flow channel 17 between the upper muffle wall 3 and the plate element 16 is formed, via which the vapor flows into the Wrasenauslass 2.
  • the plate element 16 is brought substantially by the radiant heat of the grill 1 1 to the necessary operating temperatures for catalysis.
  • the plate element 15 is provided on the executed to the upper muffle wall 3 side with a catalytically active coating.
  • the upper muffle wall is provided with just such a catalytically active coating.

Abstract

La présente invention concerne un appareil de cuisson comprenant un manchon (1) délimitant un compartiment de cuisson (4), un dispositif de chauffage électrique (11) destiné au chauffage du compartiment de cuisson (4), une sortie de vapeurs (2) destinée à la sortie des vapeurs émanant du compartiment de cuisson (4), et un catalyseur (15) destiné à l'élimination au moins partielle des odeurs et/ou des graisses. Le but de la présente invention est de proposer un appareil de cuisson de construction simplifiée, de fabrication plus économique et aux propriétés d'élimination des odeurs et/ou graisses améliorées. Un catalyseur (15) disposé à une certaine distance d'une paroi (3) du manchon entre le dispositif de chauffage électrique (11) et la paroi (3) du manchon, est orienté au moins sensiblement parallèle à la paroi (3) de manchon.
PCT/EP2016/054309 2015-03-26 2016-03-01 Appareil de cuisson pourvu d'un catalyseur d'air sortant WO2016150661A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015205498.5A DE102015205498A1 (de) 2015-03-26 2015-03-26 Gargerät mit Abluftkatalysator
DE102015205498.5 2015-03-26

Publications (1)

Publication Number Publication Date
WO2016150661A1 true WO2016150661A1 (fr) 2016-09-29

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Application Number Title Priority Date Filing Date
PCT/EP2016/054309 WO2016150661A1 (fr) 2015-03-26 2016-03-01 Appareil de cuisson pourvu d'un catalyseur d'air sortant

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DE (1) DE102015205498A1 (fr)
WO (1) WO2016150661A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922018A (en) * 1958-06-23 1960-01-19 Gen Electric Domestic cooking appliance
DE3447481A1 (de) * 1984-12-27 1986-07-03 Küppersbusch AG, 4650 Gelsenkirchen Bratroehre mit selbsttaetiger beseitigung von geruchs- u. verschmutzungsteilchen in der bratroehrenluft
EP0209887A2 (fr) 1985-07-23 1987-01-28 E.G.O. Elektro-Geräte Blanc u. Fischer Catalyseur pour un four électrique
EP0831277A1 (fr) * 1996-09-20 1998-03-25 Bosch-Siemens HausgerÀ¤te GmbH Four avec un catalyseur
EP1378711A2 (fr) 2002-06-19 2004-01-07 Ceramaspeed Limited Radiateur électrique
EP1666799A1 (fr) * 2004-11-16 2006-06-07 Electrolux Home Products Corporation N.V. Moufle d'un four de cuisson avec un catalyseur
JP2007105211A (ja) * 2005-10-13 2007-04-26 Matsushita Electric Ind Co Ltd 加熱調理器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846557A (en) * 1955-09-09 1958-08-05 Philco Corp Vapor treating means
JPH0351628A (ja) * 1989-07-19 1991-03-06 Sanyo Electric Co Ltd 加熱調理装置
DE19509569A1 (de) * 1995-03-16 1996-09-19 Wiesheu Wiwa Gmbh Ofen zur Wärmebehandlung von Lebensmitteln und Verfahren zum Backen
DE19907554A1 (de) * 1999-02-22 2000-08-31 Bsh Bosch Siemens Hausgeraete Katalysator für einen Backofen
GB0214038D0 (en) * 2002-06-19 2002-07-31 Ceramaspeed Ltd Electric heating element
WO2006122118A2 (fr) * 2005-05-09 2006-11-16 Adamski Joseph R Parois de four a rayonnement et convection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922018A (en) * 1958-06-23 1960-01-19 Gen Electric Domestic cooking appliance
DE3447481A1 (de) * 1984-12-27 1986-07-03 Küppersbusch AG, 4650 Gelsenkirchen Bratroehre mit selbsttaetiger beseitigung von geruchs- u. verschmutzungsteilchen in der bratroehrenluft
EP0209887A2 (fr) 1985-07-23 1987-01-28 E.G.O. Elektro-Geräte Blanc u. Fischer Catalyseur pour un four électrique
EP0831277A1 (fr) * 1996-09-20 1998-03-25 Bosch-Siemens HausgerÀ¤te GmbH Four avec un catalyseur
EP1378711A2 (fr) 2002-06-19 2004-01-07 Ceramaspeed Limited Radiateur électrique
EP1666799A1 (fr) * 2004-11-16 2006-06-07 Electrolux Home Products Corporation N.V. Moufle d'un four de cuisson avec un catalyseur
JP2007105211A (ja) * 2005-10-13 2007-04-26 Matsushita Electric Ind Co Ltd 加熱調理器

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