EP1567807B1 - Appareil chauffant recouvert d un revetement autonettoyant - Google Patents

Appareil chauffant recouvert d un revetement autonettoyant Download PDF

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Publication number
EP1567807B1
EP1567807B1 EP03786028A EP03786028A EP1567807B1 EP 1567807 B1 EP1567807 B1 EP 1567807B1 EP 03786028 A EP03786028 A EP 03786028A EP 03786028 A EP03786028 A EP 03786028A EP 1567807 B1 EP1567807 B1 EP 1567807B1
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EP
European Patent Office
Prior art keywords
inner layer
outer layer
layer
coating
oxidation catalyst
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
EP03786028A
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German (de)
English (en)
French (fr)
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EP1567807A1 (fr
Inventor
Stéphanie PESSAYRE
Henry Boulud
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SEB SA
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SEB SA
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Publication date
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/38—Sole plates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
    • 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

Definitions

  • the present invention relates to heating apparatus or to be heated during use and comprising a self-cleaning coating.
  • Some heating devices such as iron soles or cooking appliances, have qualities of ease of use and efficiency, depending inter alia on the state and nature of the surface of their coating. .
  • the iron soles could be improved by the care given to the gliding qualities of the ironing surface, combined with the qualities allowing the easier spreading of the linen.
  • One way to obtain these qualities is to use enamelled soles with a smooth-looking enamel, possibly with thicker lines to spread the fabric during the movement of the iron.
  • Other metal soles treated mechanically and / or covered or not with a deposit to facilitate sliding can also be suitable for a satisfactory use.
  • the sole can tarnish by carbonizing more or less diffuse on its ironing surface, and more or less incomplete, various organic particles captured by friction on ironed fabrics.
  • Iron sole coatings are known having a hard and resistant layer covered, as indicated by the patent. US4862609 by a layer improving the surface properties. But this patent does not indicate a solution to fight against fouling.
  • the walls of cooking appliances are also often covered with a smooth enamelled layer so that any splashes of grease or food do not adhere to the surface. Glazed self-cleaning surfaces are known, for example in furnaces and cooking utensils as described for example in the patent. US4029603 or the patent FR2400876 .
  • Baking apparatus wall claddings comprising two layers comprising the same oxidation catalyst chosen, inter alia, from among the oxides of platinoids ( US-3,566,855-A ).
  • the organic particles in contact with the outer layer of the coating are oxidized when the apparatus is heated. Furthermore, the synergistic effect obtained by the particular combination of an inner layer comprising a specific oxidation catalyst and an outer layer comprising a specific oxidation catalyst different from that of the inner layer makes it possible to obtain a coating having a particularly high catalytic activity. Thus, the surface of the coating is regenerated very quickly.
  • the grease projections present on the wall of the oven are oxidized hot, the solid residue is detached from the wall which is kept clean.
  • the adhesion of the coating to the metal support is particularly good.
  • This improved adhesion increases the friction resistance of the coating, this property being particularly advantageous in the case of an iron soleplate, for example.
  • heating apparatus is intended to mean any apparatus, article or utensil which, during its operation, reaches a temperature of at least 45 ° C. and preferably at least 90 ° C.
  • the device can reach this temperature operating by means of its own, such as a heating base integrated in the apparatus and provided with heating elements, or by external means.
  • Such appliances are, for example, iron soles, cooking appliances, ovens, grills, kitchen utensils.
  • the outer layer of the coating according to the invention comprises an oxidation catalyst chosen from platinum oxide.
  • platinum is meant, within the meaning of the present application, the elements having properties similar to those of platinum, and in particular, in addition to platinum, ruthenium, rhodium, palladium, osmium and iridium.
  • the outer layer comprises an oxidation catalyst selected from palladium oxides, platinum oxides and mixtures thereof.
  • oxidation catalysts are well known in themselves, as well as their methods of obtaining, without it being necessary to describe in detail their methods of preparation respectively.
  • platinum as an oxidation catalyst, its catalytically active form can be obtained by calcination or decomposition of a chloroplatinic acid salt or any other precursor.
  • any oxidation catalyst selected according to the present invention must remain sufficiently stable at the operating temperature of the device, and within the limits of the useful life of the device.
  • the surface of the outer layer is in direct contact with the ambient air and organic soils.
  • organic soils means any combustible or oxidizable substance in contact with the ambient air, completely or partially.
  • the oxidation catalyst selected from platinum oxide is distributed on and / or in the outer layer of the coating, where it is in contact with soiling, and in all or part of the outer layer, continuously or discontinuously.
  • the oxidation catalyst chosen from among the platinoids is distributed on the outer surface of the soleplate, intended to be brought into contact with the laundry.
  • the coating may comprise, in addition to the oxidation catalyst chosen from platinum oxide, any inner support layer catalytically inert with respect to oxidation.
  • This support adheres to the metal and catalytically inert support is preferably selected from aluminum or silicon compounds, such as for example alumina in divided form or particles, enamel, polytetrafluoroethylene and mixtures thereof.
  • the catalytically inert support with regard to oxidation is an enamel with a low porosity and / or roughness, at the micrometric and / or nanometric scale.
  • the enamel is for example a vitreous enamel.
  • the enamel should preferably be hard, have a good glide and resist the penetration of hot steam or humidity.
  • the outer layer of the coating preferably has a thickness, measured according to the RBS method described in Example 1 of the present application, ranging from 10 nanometers to 500 nanometers, and more preferably from 20 nanometers to 120 nanometers.
  • the oxidation catalyst of the outer layer being active at a coating temperature greater than or equal to 90 ° C, it cleans said coating when the latter is heated at least at such a temperature.
  • the inner layer comprises at least one oxidation catalyst chosen from among the oxides of the group Ib transition elements, preferably selected from copper oxides, silver oxides and mixtures thereof.
  • oxidation catalysts are well known in themselves, as well as their methods of obtaining, without it being necessary to describe in detail their methods of preparation respectively.
  • silver oxide as oxidation catalyst, it is possible to use as precursor commercial silver nitrate sold by Aldrich.
  • the catalytically active inner layer has a thickness, measured according to the RBS method described in Example 1 of the present application, ranging from 20 nanometers to 50 nanometers.
  • the oxidation catalyst present in the inner layer has a good affinity with the oxidation catalyst present in the outer layer. Indeed, after application on the support of the inner and outer layers, the support is annealed and, during this step, the oxidation catalyst present in the inner layer may diffuse into the outer layer and the oxidation catalyst present in the outer layer may diffuse into the inner layer.
  • the outer layer comprises, as oxidation catalyst, a palladium oxide and the inner layer comprises, as oxidation catalyst, a silver oxide.
  • the silver oxide has diffused into the outer layer and the outer layer thus comprises a mixture of palladium oxide and silver oxide. A particular synergistic effect on the catalytic activity of the coating has been observed in such an embodiment of the invention.
  • the heating apparatus is in the form of an iron soleplate comprising an ironing surface and the coating covers the ironing surface.
  • the heating apparatus is a cooking appliance comprising walls that can come into contact with organic soils and the coating covers these walls.
  • the catalyst acts at the operating temperature of the apparatus and the coating is kept clean as and when the device is used.
  • a second mode of operation during a so-called self-cleaning phase, before or after the use of the apparatus, the latter is set to a high temperature equal to or higher than the highest operating temperatures. is then left on hold for a predetermined time, during which the oxidation catalyst produces its effect. The user can maintain his device regularly, without waiting for a harmful fouling.
  • the metal support of the apparatus according to the invention can be based on any metal commonly used in the field of heating appliances such as aluminum, steel or titanium.
  • This metal support may itself be covered with a protective layer such as an enamelled layer before being covered by the coating of the present invention.
  • the apparatus comprises an enamel intermediate layer located between the metal support and the catalytically active inner layer of the coating.
  • the application of the catalytically active inner and outer layers to the metal support, covered or not by an enameled layer, is preferably by pyrolysis, by heating the surface to be coated and spray on this hot surface of a solution containing a precursor of the oxidation catalyst.
  • precursor any chemical or physico-chemical form of the oxidation catalyst, which is likely to lead to, or to release the latter by any appropriate treatment, for example pyrolysis.
  • the surface of the metal support to be covered is heated in an oven at about 400 ° C. and then placed very briefly, for example for a few seconds, under infrared, until a superficial temperature is reached. ranging from 400 ° C to 600 ° C.
  • This operation softens the surface of the support and makes it possible to increase the subsequent adhesion of the coating.
  • a solution of the precursor of the oxidation catalyst selected from Group Ib transition elements is sprayed onto the surface of the metal support. In contact with the surface, the precursor oxidizes and is fixed on the support and the water evaporates. A layer of thickness ranging from 20 to 50 nm is deposited. The support cools very quickly.
  • a coated support is obtained whose self-cleaning properties are particularly good.
  • FIG. 1 is a sectional view of an iron soleplate according to the invention
  • Figure 2 is a sectional view of an iron soleplate according to the invention comprising an enameled protective layer.
  • a heater 1 in the form of an iron soleplate comprising a metal support 2 covered with an inner layer 3 and an outer layer 4.
  • the sole comprises also a heating base 6 provided with heating elements 7.
  • the support 2 and the base 6 are assembled by mechanical means or by gluing.
  • the inner layer 3 comprises a catalyst oxidation agent chosen from the oxides of the transition elements of the group Ib and the outer layer 4 comprises an oxidation catalyst selected from the oxides of platinoids.
  • an iron soleplate 1 comprising a metal support 2 covered with an intermediate layer 5, an inner layer 3 and an outer layer 4.
  • the sole also comprises a heating base 6 provided with heating elements 7, bonded to the support 2.
  • the inner layer 3 comprises an oxidation catalyst chosen from the oxides of the transition elements of the group Ib and the outer layer 4 comprises a chosen oxidation catalyst among the oxides of platinoids.
  • the protective layer 5 is enamel.
  • a clean insole iron enamelled aluminum is placed on an aluminum support of about 2 cm to best retain heat. The whole is heated to 400 ° C in an oven. The sole, with the support, is placed under infrared for a few seconds until reaching a surface temperature between 400 ° C and 600 ° C. Silver nitrate, sold by Aldrich, is dissolved in water at 4 g / l and is sprayed with a pneumatic gun on the sole. A layer of about 40 to 50 nm, measured according to the RBS method, is deposited.
  • the RBS (Rutherford Backscattering Spectroscopy) method is an analytical technique based on the elastic interaction between a 4 He 2+ ion beam and the sample particles.
  • the high energy beam (2MeV) strikes the sample, the backscattered ions are detected at a teta angle.
  • the spectrum thus acquired represents the intensity of the ions detected as a function of their energy and makes it possible to determine the thickness of the layer. This method is described in WK Chu and G. Langouche, MRS Bulletin, January 1993, p 32.
  • the sole is again heated in the oven at 400 ° C and then placed for a few seconds under infrared at a temperature between 400 ° C and 600 ° C.
  • the assembly is annealed under infrared at 500 ° C for three minutes.
  • An iron sole is obtained whose self-cleaning coating adheres particularly well to the sole and has a very good catalytic activity and retains its gliding qualities.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Irons (AREA)
  • Electric Ovens (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP03786028A 2002-12-05 2003-11-20 Appareil chauffant recouvert d un revetement autonettoyant Expired - Lifetime EP1567807B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0215360A FR2848290B1 (fr) 2002-12-05 2002-12-05 Appareil chauffant recouvert d'un revetement autonettoyant
FR0215360 2002-12-05
PCT/FR2003/003429 WO2004061371A1 (fr) 2002-12-05 2003-11-20 Appareil chauffant recouvert d'un revetement autonettoyant

Publications (2)

Publication Number Publication Date
EP1567807A1 EP1567807A1 (fr) 2005-08-31
EP1567807B1 true EP1567807B1 (fr) 2007-10-31

Family

ID=32320016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03786028A Expired - Lifetime EP1567807B1 (fr) 2002-12-05 2003-11-20 Appareil chauffant recouvert d un revetement autonettoyant

Country Status (16)

Country Link
US (1) US7339142B2 (ja)
EP (1) EP1567807B1 (ja)
JP (1) JP4358749B2 (ja)
CN (1) CN1316202C (ja)
AT (1) ATE377176T1 (ja)
AU (1) AU2003295034B2 (ja)
BR (1) BR0317056B1 (ja)
CA (1) CA2508750C (ja)
DE (1) DE60317233T2 (ja)
ES (1) ES2295676T3 (ja)
FR (1) FR2848290B1 (ja)
HK (1) HK1081638A1 (ja)
MX (1) MXPA05005918A (ja)
PT (1) PT1567807E (ja)
RU (1) RU2323287C2 (ja)
WO (1) WO2004061371A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1911874A1 (en) * 2006-10-09 2008-04-16 Koninklijke Philips Electronics N.V. Soleplate for an iron
US7854222B2 (en) * 2008-06-26 2010-12-21 General Electric Company Pyrocatalytic coatings for heating devices
EP2228485A1 (en) * 2009-03-12 2010-09-15 Koninklijke Philips Electronics N.V. Domestic appliance comprising an antimicrobial agent
WO2011042886A2 (de) * 2009-10-09 2011-04-14 BSH Bosch und Siemens Hausgeräte GmbH Bügeleisensohle, insbesondere für ein dampfbügeleisen
US10449685B2 (en) 2010-04-29 2019-10-22 Whirlpool Corporation Food processor with adjustable blade assembly
US8720325B2 (en) 2010-04-29 2014-05-13 Whirlpool Corporation Food processor with a lockable adjustable blade assembly
FR2968016B1 (fr) * 2010-11-29 2013-05-03 Seb Sa Appareil chauffant recouvert d'un revetement autonettoyant
RU2657411C2 (ru) 2013-02-06 2018-06-13 Конинклейке Филипс Н.В. Обрабатывающая пластина для устройства обработки одежды
US9841195B2 (en) 2013-02-28 2017-12-12 Haier Us Appliance Solutions, Inc. Non-stick, pyrolytic coatings for heating devices
CN104174413B (zh) * 2014-09-10 2016-04-06 山东大学 一种红外光催化剂及其制备方法与应用
US10085599B2 (en) 2014-12-19 2018-10-02 Whirlpool Corporation Multi-cook and food processing prep product
USD819389S1 (en) * 2015-05-29 2018-06-05 Seb Electric fryer
RU2764846C1 (ru) * 2018-06-14 2022-01-21 Филип Моррис Продактс С.А. Генерирующее аэрозоль устройство с пирокаталитическим материалом
CN109208262B (zh) * 2018-10-29 2023-06-20 珠海格力电器股份有限公司 洗衣机的蒸汽发生装置、洗衣机及清洗方法
WO2020126266A1 (en) 2018-12-18 2020-06-25 Asml Netherlands B.V. Method of measuring a parameter of a patterning process, metrology apparatus, target

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566855A (en) * 1969-10-21 1971-03-02 Fedders Corp Self-cleaning cooking apparatus
US4029603A (en) * 1973-03-26 1977-06-14 Imperial Chemical Industries Limited Catalytic coating composition and a method for making a coated surface for an oven
JPS5436320A (en) * 1977-08-24 1979-03-17 Matsushita Electric Ind Co Ltd Articles having selffcleanable coated layer
JPS6052871B2 (ja) * 1980-03-14 1985-11-21 松下電器産業株式会社 自己浄化被覆層の製造法
DE3676975D1 (en) * 1985-12-24 1991-02-21 Braun Ag Buegeleisensohle.
CN1083036C (zh) * 1996-09-24 2002-04-17 皇家菲利浦电子有限公司 熨斗和熨斗用底板

Also Published As

Publication number Publication date
AU2003295034B2 (en) 2008-12-11
AU2003295034A1 (en) 2004-07-29
BR0317056A (pt) 2005-10-25
RU2005121142A (ru) 2006-01-20
CA2508750A1 (fr) 2004-07-22
MXPA05005918A (es) 2005-08-26
BR0317056B1 (pt) 2014-03-04
HK1081638A1 (en) 2006-05-19
DE60317233D1 (de) 2007-12-13
RU2323287C2 (ru) 2008-04-27
CN1316202C (zh) 2007-05-16
FR2848290B1 (fr) 2005-01-07
ES2295676T3 (es) 2008-04-16
EP1567807A1 (fr) 2005-08-31
WO2004061371A1 (fr) 2004-07-22
CN1717565A (zh) 2006-01-04
US20060151474A1 (en) 2006-07-13
FR2848290A1 (fr) 2004-06-11
DE60317233T2 (de) 2008-08-07
PT1567807E (pt) 2008-01-25
US7339142B2 (en) 2008-03-04
JP2006513747A (ja) 2006-04-27
JP4358749B2 (ja) 2009-11-04
ATE377176T1 (de) 2007-11-15
CA2508750C (fr) 2011-02-22

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