EP1392909A1 - Fer a repasser a semelle auto-nettoyante - Google Patents
Fer a repasser a semelle auto-nettoyanteInfo
- Publication number
- EP1392909A1 EP1392909A1 EP02733086A EP02733086A EP1392909A1 EP 1392909 A1 EP1392909 A1 EP 1392909A1 EP 02733086 A EP02733086 A EP 02733086A EP 02733086 A EP02733086 A EP 02733086A EP 1392909 A1 EP1392909 A1 EP 1392909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- iron
- sole
- oxidation catalyst
- ironing
- 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
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
Definitions
- the present invention relates to irons.
- Irons have qualities of ease of use and efficiency, depending among other things on the condition and nature of the ironing surface of their soleplate.
- the soles could have been improved by the care given to the sliding qualities of the ironing surface, combined with the qualities allowing easier spreading of the laundry.
- One way to obtain these qualities is to use enameled soles with a smooth-looking enamel, possibly with extra thickness 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 satisfactory use.
- the soleplate may tarnish by carbonizing in a more or less diffuse manner on its ironing surface, and in a more or less incomplete manner, various organic particles captured by friction on the ironed fabrics.
- Iron soleplates comprising a hard and resistant layer covered, as indicated by US Pat. No. 4,862,609, with a layer improving the surface properties. But this patent does not indicate a solution to combat fouling.
- the object of the invention described below is a self-cleaning iron, the soleplate of which is kept clean from any contamination by organic particles, and does not clog up in normal use, so as to retain its initial qualities.
- the object of the invention is achieved by an iron comprising a soleplate whose external surface includes the ironing surface, characterized in that an oxidation catalyst comprising an oxidizing catalytic agent is present or distributed in and / or on a surface layer of said sole, said oxidation catalyst being active with respect to organic dirt, at a temperature at least equal to 90 ° C. Thanks to the invention, during ironing, the organic particles captured by the soleplate are oxidized. They are somehow burned when the iron is hot, the possible solid residue loses all grip and comes off the soleplate. The sole stays clean.
- an oxidation catalyst has already been associated with the external surface of a support.
- Self-cleaning enamelled surfaces are known, for example in ovens and cooking utensils as described for example in patent US4029603 or patent FR2400876.
- the patent US4994430 describes an enamel coating comprising a dense layer and on the surface a porous layer supporting a catalyst. But such a thick, porous layer is incompatible with ironing.
- the oxidation catalyst is distributed over and / or in the surface layer of the soleplate of the iron, where it is in contact with dirt.
- the oxidation catalyst is present and / or distributed on the surface, depending on all or part of the external surface of the sole.
- the oxidation catalyst can be present or distributed between zones predetermined external surface of the sole, for example recessed areas of said external surface, capable of capturing or accumulating dirt, and in general hotter than the ironing surface, which is favorable for oxidation or catalytic.
- the oxidation catalyst is present or distributed in the said recessed part (s) , excluding the ironing surface.
- the oxidation catalyst may be present, depending on all or part of the ironing surface proper.
- the oxidizing catalytic agent considered according to the present invention is therefore any element, compound or composition capable of oxidizing, at a temperature at least equal to 90 ° C., any organic substance as included in the soils commonly encountered in the treatment (including washing and possibly softening) of textile parts or articles (for example linen)
- Such an oxidizing catalytic agent can be specific or non-specific for such and such an organic substance.
- the oxidation catalyst may or may not comprise, in addition to the catalytic oxidation agent, an inert support, for example in divided form or of particles, for example alumina, on the surface (including internal) of which the oxidizing catalytic agent is distributed or distributed.
- the inert support alone can constitute, in the undivided state, the surface layer which will be discussed below.
- Mention may be made, as catalytically active elements, of palladium, platinum, vanadium, copper or any composition of such catalytically active elements (in terms of oxidation).
- the catalytically active compositions considered according to the present invention may be present oxides of copper, manganese or cobalt, increasing the catalytic efficiency or the stability of the catalytic agent.
- oxidation catalysts are well known in themselves, as well as their production methods, without it being necessary to describe in detail their methods of preparation respectively.
- platinum as a catalytic oxidizing agent, its catalytically active form can be obtained by calcination or decomposition of a chloro-platinic acid salt or any other precursor.
- any oxidation catalytic converter selected according to the present invention must remain sufficiently stable at the working temperature of the ironing surface, and this within the limits of the useful life of the iron.
- the oxidation catalyst according to the invention is distributed at least in and / or on the surface layer of the soleplate of the iron.
- surface layer is meant any boundary layer, the thickness of which may, for example, be at most equal to 500 nanometers and in particular between 20 nanometers and 120 nanometers in contact on one side with another layer or the sole of the sole, and providing on the other side an interface with the outside, comprising the ironing surface proper.
- the oxidation catalyst or the catalytic oxidation agent can be distributed over all or part of the external surface of the sole, in the thickness and / or on the above-mentioned external layer, continuously or discontinuously.
- ironing surface means all or part of the external surface of the sole, coming directly into contact with the laundry during ironing.
- the oxidation catalyst When the oxidation catalyst remains on the surface layer of the sole, it can form a continuous or discontinuous layer or film.
- the aforementioned surface layer may not be distinguished from the rest of the sole, from its substrate or from a constituent layer of the latter, in which case, in the present description and in the claims below, the use of the term “layer "has no other object than to distinguish the limited thickness, or even zero, of the sole, in which the oxidation catalyst or the oxidizing catalytic agent can be distributed and incorporated.
- the thickness of the surface layer in which the catalyst or the catalytic oxidation agent can be included depends in particular on the depth of migration of organic dirt inside the soleplate of the iron. iron, from its outer surface.
- Organic soiling means any combustible or oxidizable substance in contact with the ambient air, completely or partially.
- the catalytic oxidizing agent comprises a metal from group IV of the periodic table or a noble metal, for example palladium and / or vanadium.
- the oxidation catalyst being active at a temperature of the sole greater than or equal to 90 ° C., it cleans said sole when it is hot.
- the catalyst acts at the ironing temperature of the iron, and the soleplate is kept clean at all times, as the iron is used for ironing.
- the iron In a second operating mode, during a so-called self-cleaning phase, before or after the use of the iron, the iron is adjusted to a high temperature, equal to or higher than the highest ironing temperatures. . It is then left on standby for a predetermined time, during which the oxidation catalyst produces its effect. The user can thus maintain her iron regularly, without waiting for a harmful fouling.
- the iron comprises a metallic sole coated with an enamel of low porosity and / or roughness, on a micrometric and / or nanometric scale, and the oxidation catalyst belongs to the surface layer of the enamel coating.
- the enamel is for example a vitrified enamel.
- Such an enamel is chosen from enamels with low porosity, for example vitrified, known for their ironing qualities, this in comparison with the enamels used in ovens or on grills, which being porous would unnecessarily require the deposition of a large amount of oxidation catalyst and would not have the qualities required for an iron soleplate.
- the enamel must in fact be at least hard, have a good glide and resist the penetration of steam or hot humidity.
- Obtaining or applying the oxidation catalyst or the oxidation catalytic agent, on or in the above-mentioned surface layer can be carried out by any known means such as by application of any precursor of the catalytic agent d oxidation, then cooking using a pyrolytic process or by electrophoresis or by chemical deposition without current called “electroless” or by vapor deposition.
- precursor is meant any chemical or physicochemical form of the oxidation catalyst and / or the oxidation catalytic agent, which is capable of succeeding in or releasing the latter by any suitable treatment, for example pyrolysis .
- any salt of chloro-platinic acid is a precursor of platinum considered as an oxidation catalyst.
- the choice of the composition of the oxidation catalyst or of the oxidation catalytic agent, and / or the conditions for obtaining or applying the latter, are determined so as not to substantially alter the intrinsic qualities of the ironing surface, in particular its sliding.
- the iron comprises a metal soleplate, for example made of aluminum alloy, and a surface layer is added to the exterior surface of said soleplate, in the form of a thin layer of a support, by example alumina, for said catalytic oxidizing agent of said organic soiling.
- the sole is coated with a layer of a polymer resistant to any oxidation at high temperature, for example polytetrafluoroethylene, and the surface layer belongs to said layer of polymer.
- a layer of a polymer resistant to any oxidation at high temperature for example polytetrafluoroethylene
- the surface layer consists of a thin layer of the oxidation catalyst, comprising an inert support, for example alumina, and a catalytic oxidation agent supported by said support.
- the invention also relates to the use of an oxidation catalyst as a self-cleaning agent for all or part of the surface. outer sole of an iron.
- Figure 1 is a sectional view of an iron soleplate according to the invention.
- Figure 2 is a bottom view of an iron according to the invention, showing the underside of the sole.
- the iron 1 visible in FIG. 1 comprises a sole 2 of aluminum secured to a heating base 3 of molded aluminum and provided with a heating element 4.
- the sole 2 is coated on its external surface 5 more easily visible in Figure 2 by an enamel known for its ironing qualities.
- the catalyst or catalytic oxidizing agent is deposited in a very thin layer on the external surface.
- This external surface 5 comprises the ironing surface 51 proper, and recessed parts 52, 53 for example around the steam outlet orifices 6.
- the outer surface is degreased and activated by a slight acid attack, for example with a solution of citric or nitric acid.
- a precursor of the oxidizing catalytic agent is prepared, for example by dissolving palladium nitrate in water at the rate of 2 grams of palladium nitrate per liter.
- PCAS palladium nitrate
- several companies for example the company PCAS in Longjumeau in France, supply more sophisticated precursors.
- the sole being heated to 300 ° C., the precursor in solution is applied to the sole by scrolling it below an ultrasonic atomizer, in one or more passes, to obtain good homogeneity of the application.
- the whole is cooked at around 300 ° C.
- the thickness of the layer of the oxidation catalyst (palladium) thus obtained can vary from 20 to 120 nanometers.
- the device is adjusted to obtain a thickness of the order of 30 nanometers. It can be seen that the palladium deposit adheres to the ironing surface, and does not significantly affect the sliding characteristics of the underlying enamel.
- the efficiency of the oxidation catalyst can be measured in a closed enclosure. A sole sample is heated to 300 ° C., on which a piece of fiber, made of organic polymer, of 2 mg, is melted representative of the dirt. After having measured the initial quantity of carbon dioxide in the enclosure, one notes its increase, attesting to the effectiveness of this solution.
- Example 2 the enamelled soleplate is heated to 300 degrees.
- a solution comprising alumina in suspension is prepared by mixing 4 grams of tetraethylorthosilicate with 96 grams of 0.6% dilute nitric acid, to which 12.8 grams of "DISPERSAL S" are added. The latter alumina product is supplied by CONDEA. The solution diluted 10 times is sprayed onto the sole. The sole is held at 300 degrees for one hour. The spraying is adjusted to obtain a deposit in solid form of approximately 10 micrometers thick, of a support for the catalytic oxidizing agent, based on alumina. An aqueous solution of palladium nitrate is then sprayed, which is subjected to cooking at 300 degrees for one hour.
- the activity of the same catalytically active surface, sample is increased to 175 x 10 -6 moles of carbon dioxide produced per hour.
- the iron has an aluminum soleplate.
- the ironing surface is cleaned by a sodium attack followed by neutralization and rinsing.
- the soleplate is oxidized in an oven at 560 degrees for 30 minutes, then a solution of palladium nitrate 2 grams per liter is applied by spraying.
- a catalytically active surface layer or oxidation catalyst is obtained, about 30 nanometers thick. Sliding qualities are obtained which are substantially close to those of aluminum. The interest of this achievement lies in the manufacturing economy.
- the activity obtained is of the order of 112 ⁇ 10 ⁇ 6 moles of carbon dioxide produced per hour, for a catalytically active surface, sample, of 10 square centimeters.
- the catalytic oxidizing agent is incorporated into a surface layer of Ormosil type, serving as a support, this term being an abbreviation of the expression in English “organically modified silicates”, as explained in the article “Structures and Properties of Ormosils” of the Journal of Sol-Gel Science and Technology, 2, 81-86 (1994), written by John D Mackenzie.
- the surface layer is obtained from a liquid solution intended to produce a gel.
- the catalytic oxidizing agent is then deposited on and or in this surface layer, by a process similar to the previous one using an ultrasonic atomizer. One to four passes make it possible to obtain good homogeneity. The whole is then dried and then cooked at around 300 ° C.
- the iron has a stainless steel soleplate.
- the ironing surface is cleaned and then passivated in a 20% nitric acid bath.
- an alumina solution such as that described in the second embodiment is applied and the soleplate is maintained at 300 degrees for one hour to obtain a surface layer serving as a support for the agent.
- oxidation catalytic A layer of the catalytic oxidizing agent is then deposited in and on this surface layer, by spraying with an ultrasonic atomizer a solution of palladium nitrate. The whole is then dried and then cooked at around 300 ° C.
- This command modifies the set temperature of the iron, bringing it to a recommended operating temperature of the oxidation catalyst, and marks the start of a predetermined self-cleaning phase, during which this temperature is maintained, and beyond which the heating of the iron stops automatically. During this phase, the oxidation catalyst fully exerts its effect. Dirt that may have stuck to the sole burns without danger, including in the recessed areas 52, 53, after which the sole regains all of its initial properties.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Catalysts (AREA)
- Irons (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Golf Clubs (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0107209A FR2825385B1 (fr) | 2001-06-01 | 2001-06-01 | Fer a repasser a semelle auto-nettoyante |
| FR0107209 | 2001-06-01 | ||
| PCT/IB2002/001945 WO2002097185A1 (fr) | 2001-06-01 | 2002-05-24 | Fer a repasser a semelle auto-nettoyante |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1392909A1 true EP1392909A1 (fr) | 2004-03-03 |
| EP1392909B1 EP1392909B1 (fr) | 2006-05-03 |
Family
ID=8863872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02733086A Expired - Lifetime EP1392909B1 (fr) | 2001-06-01 | 2002-05-24 | Fer a repasser a semelle auto-nettoyante |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US7040047B2 (fr) |
| EP (1) | EP1392909B1 (fr) |
| CN (1) | CN1243870C (fr) |
| AT (1) | ATE325216T1 (fr) |
| BR (1) | BR0209353B1 (fr) |
| DE (1) | DE60211154T2 (fr) |
| ES (1) | ES2263782T3 (fr) |
| FR (1) | FR2825385B1 (fr) |
| MX (1) | MXPA03010318A (fr) |
| RU (1) | RU2283389C2 (fr) |
| WO (1) | WO2002097185A1 (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7574878B2 (en) * | 2006-08-07 | 2009-08-18 | Karl Siegfried Schroeder | System and method for controlling the water flow of household appliances |
| EP1911874A1 (fr) * | 2006-10-09 | 2008-04-16 | Koninklijke Philips Electronics N.V. | Semelle de fer à repasser |
| EP1911873A1 (fr) * | 2006-10-09 | 2008-04-16 | Koninklijke Philips Electronics N.V. | Semelle de fer à repasser |
| EP2119822A1 (fr) * | 2008-05-16 | 2009-11-18 | Koninklijke Philips Electronics N.V. | Dispositif comprenant une plaque revêtue de métal et son procédé de fabrication |
| US7854222B2 (en) * | 2008-06-26 | 2010-12-21 | General Electric Company | Pyrocatalytic coatings for heating devices |
| ES2338846B1 (es) * | 2008-08-28 | 2011-02-18 | Bsh Krainel, S.A | Suela de plancha, dispositivo de planchado, asi como procedimiento para la fabricacion de una suela de plancha. |
| RU2535274C2 (ru) * | 2009-10-09 | 2014-12-10 | Бсх Бош Унд Сименс Хаусгерете Гмбх | Подошва утюга, в частности парового утюга |
| FR2952385B1 (fr) * | 2009-11-12 | 2012-01-20 | Seb Sa | Fer a repasser comportant une semelle presentant un evidement muni de trous de sortie de vapeur |
| FR2968016B1 (fr) * | 2010-11-29 | 2013-05-03 | Seb Sa | Appareil chauffant recouvert d'un revetement autonettoyant |
| WO2014122023A1 (fr) | 2013-02-06 | 2014-08-14 | Koninklijke Philips N.V. | Plaque de traitement pour un appareil de traitement de vêtement |
| EP3222770A1 (fr) * | 2016-03-21 | 2017-09-27 | Koninklijke Philips N.V. | Plaque de traitement pour appareil de traitement de vêtements |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266477A (en) * | 1964-04-15 | 1966-08-16 | Du Pont | Self-cleaning cooking apparatus |
| US3566855A (en) * | 1969-10-21 | 1971-03-02 | Fedders Corp | Self-cleaning cooking apparatus |
| US3993597A (en) * | 1974-05-22 | 1976-11-23 | E. I. Du Pont De Nemours And Company | Catalytic coating composition for cooking devices |
| US4702933A (en) * | 1985-07-26 | 1987-10-27 | Braun Aktiengesellschaft | Fabric pressing device |
| ES2023113B3 (es) * | 1985-12-24 | 1992-01-01 | Braun Ag | Base de plancha. |
| DE3821920A1 (de) * | 1988-06-29 | 1990-02-08 | Kraftanlagen Ag | Verfahren zur herstellung eines plattenfoermigen traegers katalytisch wirkender verbindungen |
| FR2641553B1 (fr) * | 1989-01-11 | 1991-08-23 | Seb Sa | Semelle emaillee de fer a repasser |
| GB8918086D0 (en) * | 1989-08-08 | 1989-09-20 | Ciba Geigy | Coating compositions |
| DE4113211A1 (de) * | 1991-04-23 | 1992-10-29 | Winfried Heinzel | Verfahren zum beschichten von haus- und kuechengeraetschaften |
| US6926971B2 (en) * | 2002-06-28 | 2005-08-09 | All-Clad Metalcrafters Llc | Bonded metal components having uniform thermal conductivity characteristics and method of making same |
-
2001
- 2001-06-01 FR FR0107209A patent/FR2825385B1/fr not_active Expired - Lifetime
-
2002
- 2002-05-24 US US10/479,243 patent/US7040047B2/en not_active Expired - Lifetime
- 2002-05-24 ES ES02733086T patent/ES2263782T3/es not_active Expired - Lifetime
- 2002-05-24 MX MXPA03010318A patent/MXPA03010318A/es active IP Right Grant
- 2002-05-24 CN CNB028089014A patent/CN1243870C/zh not_active Expired - Lifetime
- 2002-05-24 EP EP02733086A patent/EP1392909B1/fr not_active Expired - Lifetime
- 2002-05-24 BR BRPI0209353-7A patent/BR0209353B1/pt not_active IP Right Cessation
- 2002-05-24 RU RU2003137839/12A patent/RU2283389C2/ru active
- 2002-05-24 AT AT02733086T patent/ATE325216T1/de not_active IP Right Cessation
- 2002-05-24 WO PCT/IB2002/001945 patent/WO2002097185A1/fr not_active Ceased
- 2002-05-24 DE DE60211154T patent/DE60211154T2/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02097185A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2283389C2 (ru) | 2006-09-10 |
| US7040047B2 (en) | 2006-05-09 |
| EP1392909B1 (fr) | 2006-05-03 |
| BR0209353A (pt) | 2004-06-15 |
| CN1505717A (zh) | 2004-06-16 |
| MXPA03010318A (es) | 2004-02-17 |
| FR2825385B1 (fr) | 2003-09-12 |
| FR2825385A1 (fr) | 2002-12-06 |
| DE60211154D1 (de) | 2006-06-08 |
| ES2263782T3 (es) | 2006-12-16 |
| DE60211154T2 (de) | 2007-02-22 |
| CN1243870C (zh) | 2006-03-01 |
| HK1059951A1 (en) | 2004-07-23 |
| US20040172868A1 (en) | 2004-09-09 |
| WO2002097185A1 (fr) | 2002-12-05 |
| ATE325216T1 (de) | 2006-06-15 |
| BR0209353B1 (pt) | 2011-06-28 |
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