EP3722674A1 - Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums - Google Patents

Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums Download PDF

Info

Publication number
EP3722674A1
EP3722674A1 EP19168020.6A EP19168020A EP3722674A1 EP 3722674 A1 EP3722674 A1 EP 3722674A1 EP 19168020 A EP19168020 A EP 19168020A EP 3722674 A1 EP3722674 A1 EP 3722674A1
Authority
EP
European Patent Office
Prior art keywords
cavity
layer
reflection shield
heat reflection
stick
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.)
Pending
Application number
EP19168020.6A
Other languages
English (en)
French (fr)
Inventor
Marco Böckler
Klaus Wälzlein
Gerede AYNUR
Paolo Cescot
Andrea BRATTI
Georg Pauli
Christoph Luckhardt
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP19168020.6A priority Critical patent/EP3722674A1/de
Priority to PCT/CN2020/083446 priority patent/WO2020207367A1/en
Priority to US17/601,546 priority patent/US20220202234A1/en
Priority to AU2020256589A priority patent/AU2020256589A1/en
Priority to EP20787420.7A priority patent/EP3952706A4/de
Priority to CN202080026176.8A priority patent/CN113677247A/zh
Publication of EP3722674A1 publication Critical patent/EP3722674A1/de
Pending legal-status Critical Current

Links

Images

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
    • F24C15/005—Coatings for ovens
    • 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
    • F24C15/36—Protective guards, e.g. for preventing access to heated parts

Definitions

  • the present invention relates to a cavity having a non-stick and/or non-wetting coating.
  • the present invention relates to a cavity of a cooking appliance.
  • the present invention relates to a cooking appliance having such a cavity.
  • the present invention relates to a method for manufacturing a cavity, in particular a cavity of a cooking appliance, wherein the non-stick and/or non-wetting coating is applied to at least one cavity wall of the cavity.
  • Appliances with pyrolysis functionality require additional components for the pyrolysis system, what leads to higher costs. Furthermore, high temperatures are needed for the cleaning process, what costs energy. Appliances with catalytic enamel require high burning temperatures of over 800°C during its manufacturing process. Further, the catalytic enamel has a brittle surface what may be problematic during assembly. Furthermore, over time the pores of the enamel get blocked and the cleaning effect worsens.
  • the first object of the present invention is achieved by a cavity according to claim 1.
  • a cavity in particular a cavity for a cooking appliance, in particular an oven cavity, is provided, wherein said cavity comprises at least one cavity wall defining a cooking chamber for cooking foodstuff and having an inner surface facing towards the cooking chamber.
  • the cavity further comprises a central opening for placing foodstuff into the cooking chamber.
  • Tthe inner surface is at least partially provided with a ceramic non-stick and/or non-wetting coating.
  • the coating comprises at least a first layer, wherein the first layer is obtained by a sol-gel process from a first composition comprising a silica sol and a silane.
  • the cavity further comprises a heat reflection shield system having at least one heat reflection shield to reduce the heat radiation produced by heating elements being arranged within the cavity against the non-stick and/or non-wetting coating.
  • the first layer hereinafter also referred to as base layer, is composed of a matrix comprising the condensation reaction product of a silica sol and a silane. Obtained by a sol-gel process from a first composition has therefore to be understood in such a way, that the first layer is obtained by means of hydrolysis and (poly-)condensation of an aqueous mixture comprising at least a silica sol and a silane.
  • the starting materials of the first composition namely at least silica sol, silane and water if needed, are mixed together and stirred.
  • the mixture obtained thereof is then applied to the inner surface of the cavity wall and dried to obtain the first layer.
  • a coating having one layer is known for example from EP 2 177 580 B1 .
  • non-stick indicates a surface that resists adherence of food items, such as cheese, sauces, oils, fat or the like, what permits easy cleaning of the cavity.
  • non-wetting terms a surface that repels liquids, e.g. water. The property is evidenced by a large contact angle between a drop of water and the surface on which the drop rests, wherein a contact angle of at least 95 degree is desirable.
  • the "inner surface” of a cavity wall is the surface directed to the heated or heatable cooking chamber defined by said cavity walls. Accordingly, an “outer surface” of a cavity wall is the surface facing away from said cooking chamber.
  • the cavity comprises cavity walls, which form a cooking chamber between them, into which foodstuff may be placed to be cooked or baked.
  • the cooking chamber is defined by the cavity walls, usually comprising a left and a right side wall, a bottom wall and an upper wall, a rear wall and a front wall, whereby one of the cavity walls, usually the front wall comprises a central opening for placing the foodstuff into the cooking chamber.
  • the central opening may be closed or opened, respectively, by a door.
  • the person skilled in the art also knows other configurations of such cavity.
  • the cavity may comprise further components that are provided to be attached to the cavity walls, for example backing trays or grids. Even these further components may have a comparable structure to the cavity walls, thus at least one surface of such accessory components may be coated with a ceramic non-stick and/or non-wetting coating comprising at least a first layer, wherein the first layer is obtained by a sol-gel process from a first composition comprising a silica sol and silane.
  • the components of the cavity may be integrally formed or may comprise several parts that are provided to be joined together to form a shaped structure, such as the heatable oven cavity, its frontframe or any component thereof.
  • the idea of the present invention is to provide a cavity with an easy to clean effect whereby the contact angle of the surface shows more than 95 degrees.
  • Applying a non-stick and non-wetting coating by a sol-gel process has the advantage that a burning process at high temperatures for applying a non-stick coating on the cavity walls is not required what saves energy. Besides a good cleaning behaviour, said coating shows good abrasion-resistant and a great surface hardness what leads to an increased lifetime.
  • Heating elements e.g. tube heating elements or grill elements
  • a non-stick and non-wetting coating in particular a coating obtained by a sol-gel process being described herein, that is easy to clean
  • the maximum temperature needs to be below about 300 to 350°C. Therefore, it is also an idea of the invention to provide a heat reflection shield system in order to shield the heating elements against the critical areas of the cavity walls in order to reduce the heat radiation.
  • This allows the use of known heating elements that are already used when cavity surfaces are coated with enamel that is temperature resistant up to 500°C. This has the advantage that an easy clean coated oven can be created without the need to change the whole oven concept or without the need to apply a completely new heating system.
  • the cavity walls can be made of stainless steel or another material that is non-corrosive itself, for example aluminium or an aluminium alloy.
  • the disadvantage of such cavity walls is, however, that they are expensive. Therefore, in particular, the at least one cavity wall is made of corrosive steel and is provided with an anticorrosive layer, in particular an enamel layer and/or an aluminium layer and/or a layer comprising aluminium, and the first layer is applied to said anticorrosive layer.
  • a cavity more specific the cavity walls made of corrosive steel comprises or comprise an anticorrosive layer, hereinafter also referred to as corrosion protection layer, on its inner surface, and the non-stick and/or non-wetting coating is applied to an inner surface of said corrosion protection layer.
  • corrosion protection layer an anticorrosive layer
  • the non-stick and/or non-wetting coating itself does not protect the base material or substrate, thus the cavity walls, from corrosion. Therefore, an additional corrosion protection layer is advantageous if the cavity walls are made of any corrosive material so that the non-stick and/or non-wetting coating can also be used with base material or substrate that is corrosive itself.
  • Said enamel layer might be a so-called pyro or vitreous enamel that essentially consists of melted and fused glass powder.
  • high burning temperatures from about 820 to 840°C are needed.
  • Another kind of enamel layer might be made of an enamel having a low softening point between 450°C and 560°C, respectively a low glass transition temperature, a so-called "low-temperature enamel".
  • the softening point is defined as a temperature, respectively a temperature range, at which the material, e.g. the enamel turns from its hard and relatively brittle state into a molten or rubber-like state when temperature is increased. Therefore said low-temperature enamel can be applied to the surface of the cavity walls at lower burning temperatures.
  • Said enamel is for example an aluminium enamel that comprises aluminium oxide.
  • low carbon steel typically containing a small percentage of carbon, approximately about 0.05 to 0.30% carbon.
  • the ceramic non-stick and/or non-wetting coating comprises at least a second layer being applied to an inner surface of the first layer, wherein the second layer is obtained by a sol-gel process from a second composition comprising a silica sol, a silane and a siloxane, in particular a polydimethylsiloxane.
  • a coating having at least a second layer is also known from EP 2 177 580 B1 .
  • the second layer hereinafter also referred to as top layer, is composed of a matrix comprising the condensation reaction product of a silica sol, a silane and a siloxane. Obtained by a sol-gel process from a second composition has therefore to be understood in such a way, that the second layer is obtained by means of hydrolysis and (poly-)condensation of an aqueous mixture comprising at least a silica sol, a silane and a siloxane.
  • the starting materials of the second composition namely at least silica sol, silane, siloxane and water if needed, are mixed together and stirred. The mixture obtained thereof is then applied to the inner surface of the first layer and dried to obtain the second layer.
  • the silica sol is present in an amount of 15 to 70wt%, in particular in an amount of 30 to 70wt% and/or the silane is present in an amount of 2 to 70wt%, in particular in an amount of 10 to 40wt%, both in the first and the second composition or first and second layer.
  • silane in the first and the second composition or first and second layer is an organoalkoxysilane, in particular a methyltrimethyoxysilane and/or a fluoralkoxysilane.
  • the first and/or the second composition or the first and/or second layer may comprise a catalyst, in particular an acidic catalyst, more preferably an organic compound containing one or more carboxyl groups and/or a mineral acid, e.g. hydrochloric acid, sulfuric acid or nitric acid.
  • a catalyst in particular an acidic catalyst, more preferably an organic compound containing one or more carboxyl groups and/or a mineral acid, e.g. hydrochloric acid, sulfuric acid or nitric acid.
  • a catalyst in particular an acidic catalyst, more preferably an organic compound containing one or more carboxyl groups and/or a mineral acid, e.g. hydrochloric acid, sulfuric acid or nitric acid.
  • a catalyst in particular an acidic catalyst, more preferably an organic compound containing one or more carboxyl groups and/or a mineral acid, e.g. hydrochloric acid, sulfuric acid or nitric acid.
  • a mineral acid e.g. hydroch
  • the catalyst generally acts as a catalyst in the hydrolysis and condensation reaction and prevents too slow crosslinking.
  • first and/or the second composition or the first and/or second layer comprise or comprises a solvent, in particular an organic solvent.
  • organic solvents are alcoholic solvents, for example methanol, ethanol or propanol.
  • the solvent is present in an amount of 10 to 60wt%, in particular in an amount of 10 to 40wt%.
  • the first composition or first layer may also comprise a siloxane in a preferred embodiment.
  • Said siloxane is in particular a polydimethylsiloxane.
  • An advantageous amount of siloxane in the first composition or first layer as well as in the second composition or second layer is between 0,1 to 2 wt%.
  • the first composition or first layer and/or the second composition or second layer comprise or comprises pigments and/or dyes and/or filling materials and/or further additives.
  • temperature resistant anorganic pigments are favourable.
  • water is added to the first composition and/or the second composition, if needed.
  • the cavity comprises a heat reflection shield system, in particular at least one heat reflection shield and said heat reflection shield system, in particular said at least one heat reflection shield has a first part for protecting a cavity top wall and at least a second part for protecting a cavity side wall from heat radiation produced by heating elements being arranged within the cavity, wherein the first and the second part have in particular different dimensions.
  • One part is protecting the cavity top wall and the other one is protecting the cavity side wall.
  • An asymmetric geometry and shape results specifically in a protection that works downwards the cavity side wall.
  • the heat reflection shield system and, respectively, the heat reflection shield can be attached to an outside rod of the heating element or alternatively to all rods of the heating element. Another possibility is to attach a heat reflection shield as a whole plate on top of the heating element.
  • a heat reflection shield may also extend between two or more heating elements to isolate them from each other.
  • an inner surface of the heat reflection shield system, in particular the at least one heat reflection shield is shiny with a high emissivity, in particular with an emissivity between 0.1 and 0.6. This has the advantage that the radiation is reflected back into the cavity.
  • the heat reflection shield system in particular the at least one heat reflection shield is made of a material being temperature-resistant and/or light and/or insulating so that it shows low self-radiation behaviour.
  • Steel, aluminum alloy, stainless steel or other metallic materials will work as simple solutions also.
  • the heat reflection shield system in particular the at least one heat reflection shield comprises two or more layers of different materials.
  • Such a “sandwich solution” combines two or more layers, wherein an inner layer is the stiff carrying geometry, an outer layer is made of a light isolating material with low radiation.
  • the heat reflection shield system can be pressed out of one piece of metal or be but together out of straight profiles.
  • the heat reflection shield can be fixed to the heating element or at the inner surface of the cavity.
  • the second object of the present invention is achieved by a cooking appliance according to claim 13.
  • Such a cooking appliance comprises a heatable cavity, heating elements for heating said cavity, and a door for closing the cavity, in particular for closing a central opening of the cavity, wherein the heatable cavity is a cavity according to the present invention.
  • a cooking appliance and/or the cavity according to the present invention is a cooking and/or baking device for cooking and/or baking of foodstuff.
  • Such cooking appliance preferably a cooking and/or baking device, may particularly be a cooking appliance selected from the group comprising an oven, baking oven, microwave, steam-oven, and steam-cooker.
  • the third object of the present invention is achieved by a method for manufacturing a cavity according to claim 14.
  • Such a method for manufacturing a cavity, in particular an oven cavity of a cooking appliance, having a non-stick and/or non-wetting coating on an inner surface of at least one cavity wall of a cavity comprises at least the following steps: Firstly, an anticorrosive layer, in particular an enamel layer and/or an aluminium layer and/or a layer comprising aluminium is applied to the inner surface of the at least one cavity wall.
  • an anticorrosive layer in particular an enamel layer and/or an aluminium layer and/or a layer comprising aluminium is applied to the inner surface of the at least one cavity wall.
  • an enamel layer high burning temperatures of above 800°C are required for burning said layer to the cavity wall.
  • the cavity walls are coated with such an anticorrosive layer by spray-painting.
  • the latter Before applying the anticorrosive layer to the cavity wall, the latter can be prepared, e.g. by cleaning and/or drying the inner surface of the cavity wall and/or activating the inner surface, preferably by roughening the surface for example by mecahnical treatment, laser treatment or chemical treatment of the inner surface of the cavity wall, in order to achieve better adhesion of the anticorrosive layer.
  • the first layer of the non-stick and/or non-wetting coating is applied to a surface of the anticorrosive layer.
  • the surface of the anticorrosive layer can be prepared, e.g. cleaning and/or drying the inner surface of the anticorrosive layer, before applying the first layer to the anticorrosive layer.
  • a heat reflection shield system having at least one heat reflection shield is attached to an inner surface of the cavity or to a heating element of the cooking appliance.
  • the second layer of the non-stick and/or non-wetting coating is applied to a surface of the first layer in a further step, so that a cavity comprising a coating comprising base layer and top layer is obtained.
  • the method for manufacturing a cavity can comprise an additional step, namely that the cavity is provided by joining together the at least to cavity walls, in particular by means of laser welding. Even further components of the cavity, such as its frontframe or housing parts that surround the cavity walls can be joined together to each other and/or to the cavity walls by laser welding.
  • FIG 1 illustrates a schematic view of a cooking appliance 2.
  • Such cooking appliance 2 comprises a heatable cavity 4 according to the present invention.
  • the cavity 4 comprises cavity walls which define a cooking chamber 6 into which foodstuff may be placed for cooking or baking.
  • the cooking chamber 6 is defined by the cavity walls, usually comprising a left and a right side wall, 8a and 8b, respectively, a bottom wall 8c and an upper wall 8d and a rear wall and a front wall, which are not shown in Fig. 1 .
  • One of the cavity walls, usually the front wall comprises a central opening for placing the foodstuff into the cooking chamber 6.
  • the central opening may be closed or opened by a door that may be a part of the front wall.
  • the cooking appliance 2 usually further comprises also heating elements (not shown in FIG 1 ) for heating the cooking chamber 6 and therefore heating food that has been placed therein to be cooked. Such heating elements may be disposed at one of the cavity walls.
  • the cavity walls 8a, 8b, 8c, 8d are exemplary made of corrosive steel, actually a low carbon steel.
  • the cavity walls 8a, 8b, 8c, 8d are provided with an anticorrosive layer 12, in the present case an enamel layer that has burned to the cavity walls 8a, 8b, 8c, 8d at temperature of 820°C.
  • the cavity walls 8a, 8b, 8c, 8d are further provided with a non-stick and/or non-wetting coating 16 comprising a first layer 18 as a base layer and a second layer 22 as a top layer.
  • the first layer 18 is applied to a surface 14 of the anticorrosive layer 12.
  • a cross-sectional view of a cavity wall 8a is exemplary shown in detail in FIG 2 .
  • Both, the first layer 18 and the second layer 22 are obtained by a sol-gel process.
  • a colloidal silica sol which is pure SiO 2
  • an organoalkoxysilane which is an organic-inorganic hybrid material and presently methyltrimethyoxysilane
  • an acid catalyst presently acetic acid are mixed and stirred for about 2 hours at room temperature in order to effect a condensation reaction.
  • the weight proportion of organoalkoxysilane is about 10 to 40wt%
  • silica sol is present in an amount of 30 to 70wt%. Adding acetic acid in an amount of 0,1 to 2 wt% is sufficient for accelerating the condensation reaction.
  • a solvent presently propanol, is added in an amount of 10 to 40wt%. Pigments are added and further additives can be additionally added at this step.
  • colloidal silica sol, siloxane and a solvent, even here propanol are mixed.
  • Organoalkoxysilane and an acid catalyst, presently acetic acid are then added. Even said mixture is mixed and stirred for about 2 hours at room temperature.
  • the weight proportion of organoalkoxysilane is about 10 to 40wt%
  • silica sol is present in an amount of 30 to 70wt%
  • acetic acid is present in an amount of 0,1 to 2wt%.
  • Siloxane presently polydimethylsiloxane, is added in an amount of 0,1 to 2 wt%.
  • a solvent presently even here propanol, is added in an amount of 10 to 40wt%. Pigments are added and further additives can be additionally added at this step.
  • the anticorrosive layer presently an enamel layer is applied to the inner surface 10 of the cavity walls 8a, 8b, 8c, 8d in a first step.
  • the first layer 18 is applied to the surface 14 of the anticorrosive layer 12.
  • the second layer 22 is applied to the surface 20 of the first layer 18.
  • the first layer 16 as well as the second layer 22 are sprayed on the surface 14 of the anticorrosive layer 12 or the surface 20 of the first layer 16 and dried.
  • the first layer 16 is preferably at least still wet during the second layer 22 is applied.
  • the present invention thus a cavity having a non-stick and/or non-wetting coating and a cooking appliance having such a cavity shows an improved cleaning behaviour.
  • the cavity or the coating respectively is abrasion-resistant and shows a greater surface hardness what leads to an increased lifetime. Furthermore the coating has shown a good adhesion on the cavity wall, in particular on the surface of the anticorrosive layer. As the coating is produced by a sol-gel process, a (second) burning step at high temperatures is not necessary.
  • the cavity 4 further comprises a heat reflection shield system 26 having at least one heat reflection shield 28 to reduce the heat radiation produced by heating elements 30 being arranged within the cavity 4 against the non-stick and/or non-wetting coating 16.Each of the FIG 3 to 7 shows a part of the cavity 4 with different embodiments of such a heat reflection shield system 26.
  • the cavity 4 comprises a heat reflection shield system 26 with one heat reflection shield 28 that is applied to an outside rod of the heating element 30.
  • the heat reflection shield 28 has a first part 32a for protecting a cavity top wall 8d and a second part 32b for protecting a cavity side wall 8a.
  • the first and the second part 32a, 32b have different dimensions, the second part 32b that extends downwards the cavity side wall has larger extension than the first part 32a.
  • the heat reflection shield (28) is made of a material being temperature-resistant, light and insulating.
  • FIG 4 shows a cavity 4 having a heat reflection shield system 26 with exemplary two heat reflection shields 28 each being applied to a heating rod of the heating element 30.
  • a heat reflection shield 28 can be applied to all rods of the heating element 30.
  • the heat reflection shield (28) is made of a material being temperature-resistant, light and insulating.
  • FIG 5 shows an alternative embodiment, wherein a whole plate 28 is applied on top of the heating element 30 as a whole heat reflection shield 28.
  • the heat reflection shield 28 according to FIG 4 and FIG 5 have the same functional geometry.
  • the heat reflection shield 28 is made of a material being temperature-resistant, light and insulating.
  • FIG 6 shows an embodiment wherein the heat reflection shield 28 comprises two layers 36a, 36b made of different materials.
  • the inner layer 36b is the stiff carrying geometry
  • the outer layer 36a is the light isolating material with low radiation.
  • FIG 7 shows an embodiment wherein the heat reflection shield 28 has such a shape that two rods of the heating element 30 are isolated from each other by said heat reflection shield 28.
  • All of the above heat reflection shields 28 have an inner surface 34 that is shiny with an emissivity between 0.1 and 0.6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
EP19168020.6A 2019-04-09 2019-04-09 Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums Pending EP3722674A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19168020.6A EP3722674A1 (de) 2019-04-09 2019-04-09 Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums
PCT/CN2020/083446 WO2020207367A1 (en) 2019-04-09 2020-04-07 Cavity having a non-stick and/or non-wetting coating, cooking appliance comprising such a cavity and method for manufacturing a cavity
US17/601,546 US20220202234A1 (en) 2019-04-09 2020-04-07 Cavity having a non-stick and/or non-wetting coating, cooking appliance comprising such a cavity and method for manufacturing a cavity
AU2020256589A AU2020256589A1 (en) 2019-04-09 2020-04-07 Cavity having a non-stick and/or non-wetting coating, cooking appliance comprising such a cavity and method for manufacturing a cavity
EP20787420.7A EP3952706A4 (de) 2019-04-09 2020-04-07 Hohlraum mit einer antihaft- und/oder antibenetzungsbeschichtung, kochgerät mit solch einem hohlraum und verfahren zur herstellung eines hohlraums
CN202080026176.8A CN113677247A (zh) 2019-04-09 2020-04-07 具有不粘和/或不湿涂层的腔体、包括这种腔体的烹饪器具以及用于制造腔体的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19168020.6A EP3722674A1 (de) 2019-04-09 2019-04-09 Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums

Publications (1)

Publication Number Publication Date
EP3722674A1 true EP3722674A1 (de) 2020-10-14

Family

ID=66102904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19168020.6A Pending EP3722674A1 (de) 2019-04-09 2019-04-09 Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums

Country Status (1)

Country Link
EP (1) EP3722674A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4216670A1 (de) 2022-01-21 2023-07-26 Electrolux Appliances Aktiebolag Verfahren zur herstellung eines mehrkomponententeils eines haushalts- und/oder kochgerätes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000059555A1 (de) * 1999-04-06 2000-10-12 Institut Für Neue Materialien Gem. Gmbh Beschichtung für haushaltsgeräte auf silanbasis mit desodorisierender wirkung
EP1757863A2 (de) * 2005-08-23 2007-02-28 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung mit einem Gargerätezubehörteil
EP2177580A1 (de) 2008-10-16 2010-04-21 Looser Holding AG Antihaft-Beschichtungen
WO2012040605A1 (en) * 2010-09-24 2012-03-29 Emisshield Inc. Food product and method and apparatus for baking
EP3399240A1 (de) * 2016-02-12 2018-11-07 Samsung Electronics Co., Ltd. Ofen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000059555A1 (de) * 1999-04-06 2000-10-12 Institut Für Neue Materialien Gem. Gmbh Beschichtung für haushaltsgeräte auf silanbasis mit desodorisierender wirkung
EP1757863A2 (de) * 2005-08-23 2007-02-28 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung mit einem Gargerätezubehörteil
EP2177580A1 (de) 2008-10-16 2010-04-21 Looser Holding AG Antihaft-Beschichtungen
WO2012040605A1 (en) * 2010-09-24 2012-03-29 Emisshield Inc. Food product and method and apparatus for baking
EP3399240A1 (de) * 2016-02-12 2018-11-07 Samsung Electronics Co., Ltd. Ofen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4216670A1 (de) 2022-01-21 2023-07-26 Electrolux Appliances Aktiebolag Verfahren zur herstellung eines mehrkomponententeils eines haushalts- und/oder kochgerätes
WO2023138861A1 (en) 2022-01-21 2023-07-27 Electrolux Appliances Aktiebolag Method of manufacturing a multi-component part of a household and/or cooking appliance

Similar Documents

Publication Publication Date Title
US3853612A (en) Method for making coated receptacle for microwave cooking of food
US20020145134A1 (en) Sol-gel derived resistive and conductive coating
US20030138661A1 (en) Sol-gel composition and method of making same
US20080060634A1 (en) Coated griddle bottom
CN109788763A (zh) 具有吸收电磁辐射并将热辐射发射到炉腔中的介电涂布玻璃衬底的炉
EP3722674A1 (de) Hohlraum mit einer antihaft- und/oder nicht benetzenden beschichtung, kochgerät mit einem solchen hohlraum und verfahren zur herstellung eines hohlraums
US6392203B1 (en) Baking oven with baking oven muffle
AU2016303117B2 (en) A heatable cavity for a kitchen appliance having a low emissivity coating
US3363090A (en) Electric heating element
EP3327358B1 (de) Hohlraum mit einer emailbeschichtung, kochgerät mit solch einem hohlraum und verfahren zur herstellung solch eines hohlraums
US20220202234A1 (en) Cavity having a non-stick and/or non-wetting coating, cooking appliance comprising such a cavity and method for manufacturing a cavity
US20220404026A1 (en) Fan cover having a non-stick and/or non-wetting coating, cooking appliance comprising such a fan cover and method for manufacturing a fan cover
JP7243730B2 (ja) 防汚皮膜、ガラスセラミックス製品、防汚皮膜形成用塗料、ガラスセラミックス製品の製造方法
CN104768435B (zh) 具有包括由非氧化或至少部分非氧化的陶瓷制成的防粘涂层的烹饪表面的烹饪装置及包括这种烹饪装置的厨用器具或烹饪家电设备
JPH0967529A (ja) 熱吸収皮膜およびこれを利用した炊飯器
EP0368666B1 (de) Struktur einer Schicht für Hochtemperatur-Kochgeräte und ihr Herstellungsverfahren
KR100263549B1 (ko) 불소수지코팅세라믹용기및그제조방법
JPH0684270B2 (ja) 赤外線輻射被膜
EP4053457A1 (de) Kochgerät mit einem abdeckelement mit hochreflektierender oberfläche
JPH03240202A (ja) サーミスタ
JPS63189716A (ja) 加熱調理器
JP2523271Y2 (ja) 電子レンジ
JPS633818A (ja) 加熱用調理器の製造方法
JPH0796933B2 (ja) オーブンレンジ
JPS62186132A (ja) 調理器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210414

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR