EP3728955A1 - Gargerät mit einer spezifisch ausgebildeten katalysatoreinrichtung sowie verfahren zur herstellung eines gargeräts - Google Patents
Gargerät mit einer spezifisch ausgebildeten katalysatoreinrichtung sowie verfahren zur herstellung eines gargerätsInfo
- Publication number
- EP3728955A1 EP3728955A1 EP18807978.4A EP18807978A EP3728955A1 EP 3728955 A1 EP3728955 A1 EP 3728955A1 EP 18807978 A EP18807978 A EP 18807978A EP 3728955 A1 EP3728955 A1 EP 3728955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base unit
- cooking appliance
- catalyst device
- electrical energy
- unit
- 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.)
- Granted
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 75
- 239000003054 catalyst Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 19
- 230000001070 adhesive effect Effects 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000006260 foam Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000000875 corresponding effect Effects 0.000 description 7
- 235000019645 odor Nutrition 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000006262 metallic foam Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- Cooking appliance with a specifically designed catalyst device and method for producing a
- the invention relates to a cooking appliance with a catalyst device, which a
- Base unit made of an electrically conductive material. On this material is a variety of catalytically active elements or a catalytically active
- the cooking appliance furthermore has an electrical energy unit with which the base unit can be supplied with electrical energy for self-heating of the catalyst device.
- the base unit has electrical connection areas for connecting the electrical energy unit.
- the invention also relates to a method for producing a cooking appliance.
- a muffle is limited, and moreover through a door of
- Cooking device is closed, occur during operation and thus when preparing
- Preparation process of the food occurring in the oven and are discharged from the oven can also be provided in a cooking appliance, which has a pyrolysis operation, whereby corresponding odors can also occur in such a pyrolysis operation. Since these exhaust gases, referred to as vapor streams, are also led out of the cooking appliance, they thus also reach the surroundings of the cooking appliance and thus into kitchen areas or living areas.
- EP 2093490 A1 In the known embodiments, however, the self-heating is limited because the connection options for the electrical energy unit are limited, so that, where appropriate, the electrical energy transfer is limited.
- Cooking device is improved.
- the catalyst device has a base unit made of an electrically conductive material. On this electrically conductive material, a plurality of catalytically active elements or a catalytically active surface coating is applied, wherein the catalytically active elements or the surface coating also
- the cooking appliance furthermore has an electrical energy unit with which the base unit can be supplied with electrical energy for self-heating of the catalyst device.
- Catalyst device has electrical connection areas for connecting the electrical energy unit. These electrical connection regions are at least partially formed by a pressed material region of the base unit and / or at least partially formed by a partial region of the base unit, in the material of which an electrically conductive adhesive is additionally formed.
- Base unit to transfer.
- an energy-efficient operation of the catalyst device is then made possible and the losses of electrical energy are reduced.
- the proportion of generated electrical energy can then also be used Energy are more extensively and directly transferred to the base unit, so that the electrical energy unit can also be smaller, if necessary.
- the base unit of a uniform, electrically conductive material, which then locally individually has different density and just at the locations that form the terminal areas, a higher material density is generated defined.
- the base unit can also be provided from an advantageous electrically conductive material, which then no longer needs to be processed with regard to an individual dense production of this material, but this Material can then be supplemented at specific local points with a completely defined other material, namely the electrically conductive adhesive.
- the material density which is higher in comparison to the remaining area of the base unit, and thus a greater massiveness of these areas is then produced, so that the higher mechanical stability and, in particular, significantly improved transmission of electrical energy are also made possible here in a very defined manner.
- the electrically conductive material is thus advantageously a porous foam body.
- the weight is significantly reduced and significantly improved by the foam body, which then has a much larger surface area than a solid body, the catalytic effect.
- the individual machining of areas can then be achieved particularly advantageously, so that here also the pressed material areas can be generated in a particularly defined and compact manner.
- this adhesive also penetrates circumferentially in the porous structure of the foam body.
- Terminal areas is pressed and has a greater density than in the remaining area of the base unit.
- Terminal areas impregnated with the adhesive and the adhesive is also on the
- the electrical connection areas each have a solid contact plate made of an electrically conductive material.
- This embodiment with the solid contact plate may additionally be present in addition to the aforementioned embodiments. However, it can also be provided that in a further embodiment, only these solid contact plates are present.
- such a contact plate to the base unit in particular to a foam body of the base unit, non-destructively insoluble, in particular welded or soldered, is.
- This also allows the above-mentioned advantages to be achieved and a very robust base unit which is advantageous in terms of self-heating is created.
- the base unit is formed of metal.
- this metal is an alloy.
- Conditions are received, in particular a comprehensive recording of the transmitted electrical energy and a very fast heating up to relatively high temperatures are possible.
- alloys are relatively robust and wear-resistant, so that the functionality of the catalyst device is also permanently high.
- the metal has nickel. Nickel is particularly advantageous in terms of the above advantages.
- the material may preferably be NiCr and / or NiCrFe and / or NiFeCrAI and / or NiCrAl etc.
- materials may be used that can be heated up to a temperature of at least 250 ° C.
- the catalytic reaction is an exothermic reaction in which temperatures above 250 ° C and sometimes up to temperatures above 500 ° C can be achieved. Especially in pyrolysis such high temperatures are achieved, so that the material of the base unit must withstand these temperatures easily and permanently.
- the materials of which the base unit is formed should also have high electrical resistance.
- the materials should have a corresponding high heat capacity to be heated based on the Joule effect.
- the materials should preferably also have a high thermal conductivity in order to be heated very quickly.
- the material of the base unit is designed with a correspondingly high porosity.
- this material has different pore sizes.
- through such an open Cell structure, which is given by the porosity also generates a turbulent air flow or Wrasenstrom in the catalyst device, whereby the contact between the catalytically active elements or the corresponding surface coating and the Wrasenstrom, in particular the molecules that produce the pollution or odor is possible.
- the catalyst device is designed as a flat cylinder.
- it can be used particularly advantageously in a channel of an exhaust-carrying system of the cooking appliance and can also completely fill this flow cross-section.
- a particularly advantageous catalytic effect is achieved.
- the cooking appliance has an exhaust air duct, with which an exhaust air stream or a vapor stream produced in the cooking chamber during operation of the cooking appliance can be discharged from the cooking appliance, wherein the catalyst device is arranged in the exhaust air duct.
- Catalyst devices that are not directly heated by an electrical energy unit and thus not heated by electrical energy, but for example via a hot exhaust air stream, which is generated in the cooking appliance itself.
- Catalyst device can be achieved, so that in particular a more homogeneous temperature distribution prevails.
- heat is generated by the catalyst device itself, especially due to the external reaction. Due to this fact, the electrical energy supply can then be further reduced or even completely interrupted. This procedure is based on the Joule effect.
- the base unit is in an advantageous embodiment at the connection areas,
- such a pressed material region is formed on the edge, so that in a cross-sectional view of the base unit at the edge of a corresponding dilution is formed.
- the base unit with a base material in particular a porous foam body, is formed of a metallic material and in which then additionally the electrically conductive adhesive is optionally introduced, can also such
- the thickness of the base unit to this electrical may also be in such a configuration, the thickness of the base unit to this electrical
- Terminal areas equal to the thickness of the base unit outside the electrical
- Another aspect of the invention relates to a method for producing a cooking appliance, in which the cooking appliance is formed with a catalyst device having a base unit made of an electrically conductive material on which a plurality of catalytically active elements or a catalytically active
- the cooking appliance is also formed with an electrical energy unit, with which the
- Base unit can be supplied with electrical energy for self-heating of the catalyst device, wherein the base unit is formed with electrical connection areas for connecting the electrical energy unit.
- Terminal areas are at least partially formed by pressing material areas of the base unit and / or at least partially an electrically conductive adhesive is applied to the base unit in order to generate the terminal areas defined.
- top, bottom, front, “rear”, “horizontal”, “vertical”, “depth direction”, “width direction”, “height direction” are the positions given when the device is used as intended and disposed of properly Orientations indicated.
- Fig. 1 is a schematic vertical sectional view of an embodiment of a cooking appliance according to the invention
- FIG. 2 shows an illustration of an exemplary embodiment of a catalyst device as installed in the cooking appliance according to FIG. 1;
- FIG. 3 is a sectional view through the catalyst unit according to FIG. 2; FIG.
- FIG. 4 is a sectional view corresponding to FIG. 3 with a configuration different from that of FIGS. 2 and 3 of a catalyst device; and 5 shows a representation according to FIG. 3 and FIG. 4 with a catalyst device that is again different in this respect.
- a cooking appliance 1 is shown, which may be, for example, an oven or a microwave oven or a Dampfgarchel.
- the cooking appliance 1 may also share some of these functions and / or may have one
- the cooking appliance 1 which thus for preparing
- Food is formed, has a housing 2, in which a cooking chamber 3 is formed. In the cooking chamber 3 food can be introduced and prepared.
- the cooking chamber 3 is bounded by walls of a muffle 4, which is accommodated in the housing 2.
- the muffle 4 At the front and thus in the depth direction (z-direction) at the front, the muffle 4 has a feed opening 5, via which access to the receiving space
- the cooking appliance 1 also has a door 6, which is arranged pivotably on the housing 2 and which is provided for closing the cooking chamber 3. In Fig. 1, the closed state is shown in this regard.
- the cooking appliance 1 also has an exhaust duct 7, via which
- a fan 8 arranged in this regard the Wrasenstrom from the receiving space
- the cooking chamber 3 can aspirate and can promote. in the
- Embodiment is provided that the exhaust duct 7 at the front, in particular on a side facing the door 6, a discharge opening 9, so that an air flow through this discharge opening 9 towards the front, in particular through a gap 10, can be blown out.
- the gap 10 is preferably formed between the door 6 and the housing 2, in particular a control panel 11.
- the cooking appliance 1 also has a catalyst device 12, with which a catalysis of the Wrasenstroms can take place. In this way, it is also achieved, in particular, that undesired odors can escape from the cooking appliance 1 and, as a result, cleaning of this vapor stream is thus effected by the catalyst device 12, so that the air flow which flows after the catalyst device 12 and then flows out of the cooking device 1 from the discharge opening 9 , in this regard
- the cooking appliance 1 also has an electrical energy unit 13, which is separate from the catalyst device 12.
- the electrical energy unit 13 is electrically connected to the catalyst device 12, in particular via lines 14. By supplying electrical energy through the electrical energy unit 13 to the catalyst device 12, the catalyst device 12 can be heated directly.
- the catalyst device 12 is formed in particular over the entire cross section of the exhaust air duct 7.
- FIG. 2 shows a schematic plan view of an exemplary embodiment of a catalyst device 12.
- the catalyst device 12 has a base unit 15, which is advantageously formed here by a porous foam body of a metal foam. On this base unit 15, a plurality of catalytically active elements 16 or a catalytically active surface coating is applied.
- the base unit 15 which is of cylindrical design, has edge-mounted electrical connection areas 17 and 18. At these electrical connection regions 17 and 18, the electrical energy unit 13, in particular via the lines 14, electrically connected. Both the position and the dimensions of the electrical connection areas 17 and 18 are to be understood as examples only.
- the electrical connection areas 17 and 18 in the embodiment shown here are made of the same material as the rest of the configuration of the base unit 15.
- the electrical Connecting areas 17 and 18 are also formed here of a porous foam body made of metal.
- these electrical connection regions 17 and 18 are pressed, so that here there is a pressed material region of the porous foam body, which thus has a greater density here than in the regions of the base unit 15 outside this electrical
- the dimensions, viewed in the direction of the longitudinal axis A of the catalyst device 12, of the electrical connection regions 17 and 18 formed by the pressed material regions are here thinner than the remaining region of the base unit 15.
- a further embodiment of a catalyst device 12 is shown in a schematic sectional view.
- this embodiment provides for electrical connection regions 17 and 18 to have an axial thickness which corresponds to the thickness of the remaining region of the base unit 15.
- the electrical connection areas 17 and 18 are basically formed by the porous foam body made of metal, which is also formed outside of the electrical connection areas 17 and 18 in the base unit 15, in which case these material areas are not pressed or such are pressed, that they nevertheless have a smaller density than in
- Embodiment be provided with the electrically conductive adhesive 19, that the defined electrical connection portions 17 and 18 are thinner in the axial direction than the remaining area of the base unit 15, so at least slightly pressed.
- FIG. 5 a further exemplary embodiment of a catalyst device 12 is shown in FIG. 5 in a further schematic representation.
- the electrical connection areas 17 and 18 are formed by solid and thus virtually non-porous contact plates 20 and 21. You can especially in Supplement to the embodiments three and four may also be provided in addition. These contact plates 20, 21 are welded to the foam body in particular.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017223090.8A DE102017223090A1 (de) | 2017-12-18 | 2017-12-18 | Gargerät mit einer spezifisch ausgebildeten Katalysatoreinrichtung sowie Verfahren zur Herstellung eines Gargeräts |
PCT/EP2018/082324 WO2019120874A1 (de) | 2017-12-18 | 2018-11-23 | Gargerät mit einer spezifisch ausgebildeten katalysatoreinrichtung sowie verfahren zur herstellung eines gargeräts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3728955A1 true EP3728955A1 (de) | 2020-10-28 |
EP3728955B1 EP3728955B1 (de) | 2022-01-05 |
Family
ID=64457002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18807978.4A Active EP3728955B1 (de) | 2017-12-18 | 2018-11-23 | Gargerät mit einer spezifisch ausgebildeten katalysatoreinrichtung sowie verfahren zur herstellung eines gargeräts |
Country Status (5)
Country | Link |
---|---|
US (1) | US11885504B2 (de) |
EP (1) | EP3728955B1 (de) |
CN (1) | CN111448422B (de) |
DE (1) | DE102017223090A1 (de) |
WO (1) | WO2019120874A1 (de) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2931362B2 (ja) * | 1990-04-12 | 1999-08-09 | 日本碍子株式会社 | 抵抗調節型ヒーター及び触媒コンバーター |
JP2898364B2 (ja) * | 1990-07-06 | 1999-05-31 | 日本碍子株式会社 | 電極一体型ハニカムヒーター及びその製造方法 |
DE4139904A1 (de) * | 1991-12-04 | 1993-06-09 | Kueppersbusch Ag, 4650 Gelsenkirchen, De | Back- oder bratofen mit einem katalysator |
DE19608512A1 (de) * | 1996-03-05 | 1997-09-11 | Filterprodukte Gmbh Ab | Katalysator und Vorrichtung zur Abluftreinigung |
JP3557815B2 (ja) | 1996-11-01 | 2004-08-25 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102005056034A1 (de) | 2005-11-24 | 2007-05-31 | Electrolux Home Products Corporation N.V. | Katalysatoreinrichtung für ein Haushaltsgerät |
EP2093490B1 (de) * | 2008-02-21 | 2014-01-08 | Electrolux Home Products Corporation N.V. | Backofen mit Abgasreinigungsanordnung |
JP2009243383A (ja) * | 2008-03-31 | 2009-10-22 | Honda Motor Co Ltd | 触媒装置 |
CN102574746B (zh) * | 2009-10-07 | 2014-04-16 | 日本碍子株式会社 | 蜂窝状结构体 |
RU2417840C1 (ru) * | 2009-10-26 | 2011-05-10 | Александр Геннадьевич Тарарыкин | Каталитический элемент |
CN103269770B (zh) | 2010-12-24 | 2015-07-15 | 日本碍子株式会社 | 蜂窝状结构体 |
US9372213B2 (en) * | 2012-02-15 | 2016-06-21 | Alpha and Omega, Inc. | Sensors for electrical connectors |
EP2657615A1 (de) * | 2012-04-27 | 2013-10-30 | Miele & Cie. KG | Gargerät und Katalysatoreinrichtung |
CN105163407B (zh) * | 2015-08-11 | 2018-04-06 | 王睿君 | 一种多功能远程智能控制低温电发热板的制备方法 |
-
2017
- 2017-12-18 DE DE102017223090.8A patent/DE102017223090A1/de not_active Withdrawn
-
2018
- 2018-11-23 CN CN201880081578.0A patent/CN111448422B/zh active Active
- 2018-11-23 WO PCT/EP2018/082324 patent/WO2019120874A1/de unknown
- 2018-11-23 US US16/772,220 patent/US11885504B2/en active Active
- 2018-11-23 EP EP18807978.4A patent/EP3728955B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
DE102017223090A1 (de) | 2019-06-19 |
CN111448422B (zh) | 2023-03-31 |
WO2019120874A1 (de) | 2019-06-27 |
CN111448422A (zh) | 2020-07-24 |
EP3728955B1 (de) | 2022-01-05 |
US20210071877A1 (en) | 2021-03-11 |
US11885504B2 (en) | 2024-01-30 |
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