EP1424431B1 - Steam iron with device for blowing air into the steam chamber - Google Patents

Steam iron with device for blowing air into the steam chamber Download PDF

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Publication number
EP1424431B1
EP1424431B1 EP03027390A EP03027390A EP1424431B1 EP 1424431 B1 EP1424431 B1 EP 1424431B1 EP 03027390 A EP03027390 A EP 03027390A EP 03027390 A EP03027390 A EP 03027390A EP 1424431 B1 EP1424431 B1 EP 1424431B1
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EP
European Patent Office
Prior art keywords
steam
air
steam chamber
chamber
steam iron
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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
EP03027390A
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German (de)
French (fr)
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EP1424431A1 (en
Inventor
Carmelo Albandoz Ruiz De Ocenda
Alfred Fraunhofer
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1424431A1 publication Critical patent/EP1424431A1/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00Hand irons
    • D06F75/08Hand irons internally heated by electricity
    • D06F75/10Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • D06F75/18Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator

Abstract

A drip valve (20) introduces water into a heated steam chamber (14). A steam pressing iron base (16) has a hole (18) directed at an item of laundry to be ironed for delivering steam (40) flowing from the steam chamber. An air device (22) blows air into the steam chamber and has an air nozzle (24) running into the steam chamber.

Description

Die Erfindung betrifft ein Dampfbügeleisen mit einem Eintropfventil zur Einbringung von Wasser in eine beheizbare Dampfkammer und einer Damafbüaeleisensohle, die wenigstens eine auf ein zu bügelndes Wäschestück gerichtete Öffnung zur Durchleitung von aus der Dampfkammer strömendem Dampf aufweist wobei eine Vorrichtung zum Einblasen von Luft in die Dampfkammer vorgesehen ist.The invention relates to a steam iron with a drip valve for introducing water into a heated steam chamber and a Damafbüaeleensensohle having at least one directed to be ironed laundry item opening for the passage of steam flowing from the steam chamber wherein a device for blowing air into the steam chamber is.

Ein gattungsgemäßes Dampfbügeleisen ist in der DE 476 394 C offenbart.A generic steam iron is in the DE 476 394 C disclosed.

Die DE 100 25 233 A1 beschreibt ein Dampfbügeleisen, welches eine Verdampfungskammer, ein Dampfablassventil sowie eine Dampfbügeleisensohle aufweist. In dieser ist wenigstens eine auf ein zu bügelndes Wäschestück gerichtete Dampföffnung ausgebildet, Durch das Dampfablassventil kann im geöffneten Zustand Dampf aus einer Verdampfungskammer über die zumindest eine Dampföffnung auf das zu bügelnde Wäschestück geleitet werden.The DE 100 25 233 A1 describes a steam iron having a vaporization chamber, a vapor release valve and a steam iron sole. At least one steam opening directed at a laundry item to be ironed is formed therein. In the opened state, steam can be passed from an evaporation chamber via the at least one steam opening onto the laundry item to be ironed.

Eine Vorrichtung zur Dampferzeugung, die sich u.a. auch für Dampfbügeleisen eignet, ist weiterhin aus der EP 0 666 451 A1 bekannt. Diese Vorrichtung umfasst einen Heizkörper und einen Dampfkammerkopf, deren Innenwände eine ringförmige Dampfkammer bilden. Dort ist ein rotierendes Flügelrad angeordnet, dem über eine Wasserzuleitung Wasser zugeführt wird. Durch das schnell rotierende Flügelrad wird das Wasser in winzige Tröpfchen zerstäubt und gelangt an die heiße Dampfkammerwand, wo die Wassertropfen verdampfen.A device for generating steam, which is also suitable for steam irons, is still from the EP 0 666 451 A1 known. This device comprises a heating element and a steam chamber head whose inner walls form an annular steam chamber. There, a rotating impeller is arranged, which is supplied via a water supply water. The rapidly rotating impeller atomizes the water into tiny droplets and reaches the hot steam chamber wall, where the water droplets evaporate.

Darüber hinaus sei noch auf die unterschiedlichen in den Druckschriften US 1,593,898 A ; DE 43 15 800 A ; US 2,864,185 A ; DE 34 37 825 A und EP 0 617 156 A beschriebenen Bügeleisen hingewiesen.In addition, it is still on the different in the pamphlets US 1,593,898 A ; DE 43 15 800 A ; US 2,864,185 A ; DE 34 37 825 A and EP 0 617 156 A pointed iron described.

Eine Aufgabe der vorliegenden Erfindung besteht darin, bei einem gattungsgemäßen Dampfbügeleisen mehr Dampf zu erzeugen und seine Gleiteigenschaften zu verbessern.An object of the present invention is to produce more steam in a generic steam iron and to improve its sliding properties.

Diese Aufgabe wird mit einem Dampfbügeleisen mit den Merkmalen des unabhängigen Patentanspruchs dadurch gelöst, dass die Vorrichtung zum Einblasen von Luft wenigstens eine in die Dampfkammer mündende Luftdüse aufweist, welche in der Nähe eines In die Dampfkammer mündenden Eintropfventils zur Einbringung von Wasser angeordnet ist, wobei eine Ausströmöffnung der wenigstens einen Luftdüse auf eine Auslassöffnung des Einlassventils gerichtet ist.This object is achieved with a steam iron with the features of the independent claim, characterized in that the device for blowing air has at least one opening into the steam chamber air nozzle, which is arranged in the vicinity of an opening into the steam chamber Eintropfventils for introducing water, wherein a Outflow opening of the at least one air nozzle is directed to an outlet opening of the inlet valve.

Der vorliegenden Erfindung liegt die Idee zugrunde, in einer Dampfkammer des Dampfbügeleisens eine zusätzliche Vorrichtung zur Einblasung von Luft vorzusehen. Hierzu mündet in die Dampfkammer wenigstens eine Luftdüse, durch die Luft mit einem geringen Überdruck von bspw. ca. 0,5 bis 1 bar in die Dampfkammer eingeblasen wird. Durch das Einblasen von Luft in die Dampfkammer wird die Zerstäubung von darin eingebrachtem Wasser und/oder Nassdampf verbessert, so dass eine größere Dampfmenge erzeugt werden kann. Die Dosierungsmenge kann somit vergrößert werden. Gleichzeitig kann das Gleiten des Bügeleisens verbessert werden, da durch die größere und feiner verteilte Dampfmenge das Gleiten deutlich gleichmäßiger wird, ähnlich wie mit einem Luftkissen. Zudem tritt der Dampf mit einer höheren Energie aus der Dampfbügeleisensohle aus und dringt tiefer in das Gewebe des zu bügelnden Wäschestücks ein, so dass dieses besser aufgelockert wird. Weiterhin kann bei der Verdampfung eine größere Oberfläche der Bügeleisensohle verwendet werden, so dass die Verdampfung insgesamt gleichmäßiger erfolgt.The present invention is based on the idea to provide an additional device for blowing in air in a steam chamber of the steam iron. For this purpose, at least one air nozzle opens into the steam chamber, through which air is blown into the steam chamber at a slight overpressure of, for example, approximately 0.5 to 1 bar. By injecting air into the steam chamber, the atomization of water and / or wet steam introduced therein is improved, so that a larger amount of steam can be generated. The dosage amount can thus be increased. At the same time, the sliding of the iron can be improved, since the larger and more finely distributed amount of steam, the gliding is much smoother, similar to an air cushion. In addition, the steam with a higher energy from the steam iron sole and penetrates deeper into the fabric of the laundry to be ironed, so that it is better loosened up. Furthermore, a larger surface of the soleplate can be used in the evaporation, so that the evaporation takes place more uniform overall.

Eine besonders vorteilhafte Wirkung wird erreicht, wenn erfindungsgemäß die wenigstens eine Luftdüse in Nähe eines in die Dampfkammer mündenden Eintropfventils zur Einbringung von Wasser und/oder Nassdampf angeordnet ist, wobei eine Ausströmöffnung der wenigstens einen Luftdüse auf eine Auslassöffnung des Einlassventils gerichtet ist Dadurch dass wenigstens eine Luftdüse auf eine Auslassöffnung des Eintropfventils gerichtet ist erfolgt eine optimale Verteilung des Dampfes in der Dampfkammer, so dass insgesamt auch eine größere Dampfmenge in gleicher Zeit erzeugt werden kann.A particularly advantageous effect is achieved if, according to the invention, the at least one air nozzle is arranged in the vicinity of a drip valve opening into the steam chamber for introducing water and / or wet steam, wherein an outflow opening of the at least one air nozzle is directed onto an outlet opening of the inlet valve Air nozzle is directed to an outlet opening of Eintropfventils takes place an optimal distribution of the steam in the steam chamber, so that a total of a larger amount of steam can be generated in the same time.

Eine Ausgestaltung der Erfindung sieht vor, dass die Vorrichtung zur Einblasung von Luft einen von einem kleinen Elektromotor betriebenen Verdichter umfasst. Ein vom Elektromotor angetriebenes Verdichterrad kann Luft aus der Umgebung ansaugen und sie mit einem Überdruck von ca. 0,5 bis 1 bar in die Dampfkammer einblasen. Wenn die Luft an irgend einer Stelle in die Dampfkammer eingeblasen wird, wird dadurch zumindest das Gleiten des Bügeleisens verbessert. Wenn die Luft jedoch am Auslass des Eintropfventils eingeblasen wird, werden deutliche Verbesserungen hinsichtlich der erzeugten Dampfmenge, der Gleiteigenschaften des Bügeleisens sowie der erzielbaren Austrittsenergie des Dampfes erreicht. Beim Anblasen des Auslasses des Eintropfventils wird ein aus diesem austretender Tropfen fein in der Dampfkammer verteilt, wobei die Oberfläche der Verdampfung vergrößert und damit die erzeugte Menge an Dampf erhöht wird.An embodiment of the invention provides that the device for blowing in air comprises a compressor operated by a small electric motor. One from the electric motor driven compressor wheel can suck in air from the environment and blow them with an overpressure of about 0.5 to 1 bar in the steam chamber. If the air is injected at any point in the steam chamber, thereby at least the sliding of the iron is improved. However, when the air is injected at the outlet of the drip valve, significant improvements are achieved in terms of the amount of steam generated, the sliding properties of the iron and the achievable output energy of the steam. When the outlet of the dropping valve is blown, a drop emerging therefrom is finely dispersed in the steam chamber, thereby increasing the surface area of the evaporation and thus increasing the generated amount of steam.

Eine alternative Ausgestaltung sieht ein Druckluftreservoir im Dampfbügeleisen vor, das eine nachgeordnete Drosseleinrichtung zur Erzeugung des gewünschten konstanten Überdrucks bei der Einleitung in die Dampfkammer aufweist. Das Druckluftreservoir kann bspw. eine auswechselbare Patrone umfassen, die mit einem Überdruck von mehr als 100 bar gefüllt sein kann und die auf diese Weise bei geringer Größe eine relativ lange Betriebsdauer gewährleisten kann. Mit einem solchen auswechselbaren Druckluftreservoir kann gegenüber einem elektromotorisch betriebenen Verdichter der Bauaufwand verringert sowie das für die Vorrichtung zur Einblasung von Luft notwendige zusätzliche Baugewicht reduziert werden.An alternative embodiment provides a compressed air reservoir in the steam iron, which has a downstream throttle device for generating the desired constant overpressure during the introduction into the steam chamber. The compressed air reservoir may, for example, comprise an exchangeable cartridge which may be filled with an overpressure of more than 100 bar and which in this way can ensure a relatively long service life for a small size. With such a replaceable compressed air reservoir, the construction cost can be reduced compared to a compressor operated by an electric motor and the additional construction weight required for the device for blowing in air can be reduced.

Eine weitere Ausgestaltung der Erfindung kann vorsehen, dass zwei oder mehr sehr feine Luftdüsen konzentrisch um das Eintropfventil angeordnet sind und für eine optimale Dampferzeugung durch extrem feine Zerstäubung des mittels des Eintopfventils zugeführten Wassers und/oder Nassdampfes sorgen.A further embodiment of the invention can provide that two or more very fine air nozzles are arranged concentrically around the drip valve and ensure optimum steam generation by extremely fine atomization of the water and / or wet steam supplied by means of the one-pot valve.

Insgesamt wird durch die Verwendung des Venturi-Effektes durch die Einblasung von Luft auf die Ausströmöffnung des in der Dampfkammer angeordneten Diffusors die darin erzeugte Dampfmenge erhöht, wodurch die Gleiteigenschaften des Bügeleisens verbessert und die Effektivität beim Glätten der Wäsche erhöht werden kann.Overall, the use of the Venturi effect by the blowing of air to the discharge opening of the arranged in the steam chamber diffuser, the amount of steam generated therein is increased, whereby the sliding properties of the iron can be improved and the effectiveness of the smoothing of the laundry can be increased.

Weitere Aspekte und vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen sowie aus der nachfolgenden Figurenbeschreibung.Further aspects and advantageous developments of the invention will become apparent from the dependent claims and from the following description of the figures.

Nachstehend wird die Erfindung anhand eines Ausführungsbeispiel unter Bezugnahme auf die beiliegende Zeichnung näher erläutert. Dabei zeigt:

Figur 1
eine schematische Darstellung eines erfindungsgemäßen Dampfbügeleisens und
Figur 2
eine schematische Detailansicht der Vorrichtung zur Einblasung von Luft in die Dampfkammer des Bügeleisens.
The invention will be explained in more detail with reference to an embodiment with reference to the accompanying drawings. Showing:
FIG. 1
a schematic representation of a steam iron according to the invention and
FIG. 2
a schematic detail view of the device for the injection of air into the steam chamber of the iron.

Ein Dampfbügeleisen 10 weist ein an sich bekanntes Gehäuse 12 mit einem Handgriff und einer nach unten gerichteten Dampfbügeleisensohle 16 auf, die beheizbar ist und die unter mehr oder weniger starkem Druck über ein zu bügelndes Wäschestück geschoben wird. Innerhalb des Gehäuses 12 und oberhalb der beheizbaren Dampfbügeleisensohle 16 ist eine Dampfkammer 14 angeordnet, in die mittels eines Eintropfventils 20 Wasser aus einem Wassertank (nicht dargestellt) eingebracht und in kleine Wassertröpfchen fein zerstäubt wird. In der Dampfbügeleisensohle 16 sind mehrere, vorzugsweise eine Vielzahl von Öffnungen 18 vorgesehen, durch die der in der Dampfkammer 14 erzeugte Dampf 40 hindurch treten und in das Wäschestück eindringen kann, um dessen Gewebe aufzulockern und die Bügelergebnisse zu verbessern.A steam iron 10 has a housing 12 known per se with a handle and a steam iron sole plate 16 directed downwards, which can be heated and which is pushed under more or less strong pressure over a laundry item to be ironed. Within the housing 12 and above the heated steam iron sole 16, a steam chamber 14 is arranged, into which by means of a Eintropfventils 20 water from a water tank (not shown) is introduced and finely atomized into small water droplets. In the steam iron sole plate 16 are provided a plurality, preferably a plurality of openings 18, through which the steam 40 generated in the steam chamber 14 can pass and penetrate into the laundry to loosen its fabric and improve the ironing results.

Eine Vorrichtung 22 zur Einblasung von Luft in die Dampfkammer 14 umfasst im gezeigten Ausführungsbeispiel wenigstens eine in die Dampfkammer 14 mündende Luftdüse 24, die über eine Verbindungsleitung 30 mit einem Verdichter 26 in Verbindung steht, dessen Verdichterrad von einem Elektromotor 28 angetrieben wird. Da bei einem Dampfbügeleisen 10 ohnehin eine Spannungsversorgung zum Betrieb der Heizung zur Verfügung steht, kann der Elektromotor 28 ohne signifikanten konstruktiven Mehraufwand problemlos über diese Spannungsversorgung betrieben werden. Die wenigstens eine Luftdüse 24 ist mit ihrer Ausströmöffnung auf eine Auslassöffnung des Eintropfventils 20 gerichtet, wodurch eine wesentlich feinere Verteilung der Wassertröpfchen und damit ein höherer Dampfdurchsatz erreicht werden kann.In the embodiment shown, a device 22 for blowing air into the steam chamber 14 comprises at least one air nozzle 24 which opens into the steam chamber 14 and is connected via a connecting line 30 to a compressor 26 whose compressor wheel is driven by an electric motor 28. Since in a steam iron 10, a power supply for operating the heater is available anyway, the electric motor 28 can be easily operated without significant additional design effort on this power supply. The at least one air nozzle 24 is directed with its outflow opening to an outlet opening of the Eintropfventils 20, whereby a much finer distribution of the water droplets and thus a higher steam flow rate can be achieved.

Eine hier nicht dargestellte erfindungsgemäße Ausgestaltung sieht zwei oder mehr Luftdüsen 24 vor, die konzentrisch um das Eintropfventil 20 angeordnet sind und die jeweils sehr feine Ausströmöffnungen zur Einblasung von Luft in die Dampfkammer 14 aufweisen. Dies kann zu einer weiteren Verbesserung des Dampfdurchsatzes führen. Die Luft wird vorzugsweise mit einem Überdruck von ca. 0,5 bis 1 bar in die Dampfkammer 14 eingeblasen.An embodiment of the invention, not shown here, provides two or more air nozzles 24, which are arranged concentrically around the drip valve 20 and each have very fine outflow openings for the injection of air into the steam chamber 14. This can lead to a further improvement of the steam flow rate. The air is preferably blown into the steam chamber 14 at an overpressure of about 0.5 to 1 bar.

Eine hier ebenfalls nicht dargestellte Variante der Erfindung sieht vor, dass anstatt eines elektromotorisch betriebenen Verdichters ein Druckluftreservoir im Gehäuse 12 angeordnet ist, dessen hoher Überdruck vorzugsweise mittels einer Drossel auf den gewünschten Überdruck (0,5 - 1 bar) reduziert. Dieses Druckluftreservoir kann bspw. in Form einer auswechselbaren Patrone ausgebildet sein, die ein sehr geringes Gewicht aufweist und auf diese Weise das Gesamtgewicht des Dampfbügeleisens 10 nur geringfügig erhöht.A variant of the invention which is likewise not shown here provides for a compressed air reservoir to be arranged in the housing 12 instead of an electric motor-driven compressor, the high overpressure of which is preferably reduced to the desired overpressure (0.5-1 bar) by means of a throttle. This compressed air reservoir may be formed, for example, in the form of a replaceable cartridge, which has a very low weight and in this way increases the total weight of the steam iron 10 only slightly.

Die erfindungsgemäße Vorrichtung 22 zur Einblasung von Luft ermöglicht eine deutliche Verbesserung der Bügelergebnisse, da das Dampfbügeleisen 10 annähernd wie auf einem Luftkissen gleitet, zumindest jedoch seine Gleiteigenschaften verbessert werden. Die durch die Öffnungen 18 vergrößerte Menge an austretendem Dampf 40 tritt gleichzeitig mit höherer Energie aus, wodurch der Dampf 40 tiefer in das zu bügelnde Gewebe eindringt und dieses stärker auflockert. Zudem wird bei der Verdampfung eine größere Oberfläche der Dampfbügeleisensohle 16 beaufschlagt, so dass die Verdampfung insgesamt gleichmäßiger wird. Dies kann insbesondere durch die Verwendung von wenigstens zwei Luftdüsen 24 erreicht werden, die die aus dem Eintropfventil 20 austretenden Wassertröpfchen deutlich besser innerhalb der Dampfkammer 14 verteilen können als das Eintropfventil 20 alleine oder nur eine einzige Luftdüse 24.The air-blowing device 22 according to the invention enables a marked improvement in ironing results, since the steam iron 10 slides approximately as if it were on an air cushion, but at least its sliding properties are improved. The increased amount of escaping steam 40 through the openings 18 exits simultaneously with higher energy, whereby the steam 40 penetrates deeper into the fabric to be ironed and this loosens more. In addition, in the evaporation of a larger surface of the steam iron sole 16 is applied, so that the evaporation is more uniform overall. This can be done in particular by the use of at least two Air nozzles 24 can be achieved, which can distribute the water droplets emerging from the drip valve 20 much better within the steam chamber 14 than the dripping valve 20 alone or only a single air nozzle 24th

Claims (6)

  1. Steam iron with a drip-in valve (20) for introducing water into a heatable steam chamber (14) and a steam iron sole (16) having at least one opening (18), which is oriented towards a laundry article to be ironed, for conducting steam (40) flowing out of the steam chamber (14), wherein a device (22) for blowing air into the steam chamber (14) is provided, characterised in that the device (22) for blowing in air comprises at least one air nozzle (24) which opens into the steam chamber (14) and which is arranged in the vicinity of a drip-in valve (20), which opens into the steam chamber (14), for the introduction of water, wherein an outflow opening of the at least air nozzle (24) is oriented towards an outlet opening of the drip-in valve (20).
  2. Steam iron according to claim 1, characterised in that the air blown into the steam chamber (4) has an over-pressure of at least approximately 0.5 bars.
  3. Steam iron according to claim 1 or 2, charactised in that the device (22) for blowing in air comprises a compressor (26) driven by an electric motor (28).
  4. Steam iron according to claim 1 or 2, charactised in that the device (22) for blowing in air comprises a pressure reservoir and a downstream throttle.
  5. Steam iron according to claim 4, characterised in that the pressure reservoir is constructed in the form of an exchangeable cartridge.
  6. Steam iron according to any one of the preceding claims, characterised in that two or more very fine air nozzles (24) are arranged concentrically around the drip-in valve.
EP03027390A 2002-11-28 2003-11-27 Steam iron with device for blowing air into the steam chamber Expired - Lifetime EP1424431B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10255677 2002-11-28
DE10255677 2002-11-28

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EP1424431A1 EP1424431A1 (en) 2004-06-02
EP1424431B1 true EP1424431B1 (en) 2011-10-05

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EP03027390A Expired - Lifetime EP1424431B1 (en) 2002-11-28 2003-11-27 Steam iron with device for blowing air into the steam chamber

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EP (1) EP1424431B1 (en)
AT (1) ATE527406T1 (en)
ES (1) ES2372173T3 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1593898A (en) * 1925-11-12 1926-07-27 Cannon Engineering Co Electric sadiron
DE476394C (en) * 1928-05-19 1929-05-16 Joseph Schneider Iron with an evaporation room and an air heater room
BE547490A (en) * 1955-05-03
DE3437825C2 (en) * 1984-01-13 1986-08-14 Rowenta-Werke Gmbh, 6050 Offenbach steam iron
IT1272133B (en) * 1993-03-23 1997-06-11 Dierre Finanziaria S R L IRON FOR IRONING OF WET AND NON-WOVEN FABRICS
DE4315800A1 (en) * 1993-05-13 1994-11-24 Knorr Wilfried Device for loading textiles u. The like. With fluids, especially ironing device
FR2764912B1 (en) * 1997-06-18 1999-09-17 Seb Sa IRONING APPARATUS, HOT AND WET AIR

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ES2372173T3 (en) 2012-01-16
EP1424431A1 (en) 2004-06-02
ATE527406T1 (en) 2011-10-15

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