EP0377803B1 - Electric steam iron - Google Patents

Electric steam iron Download PDF

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Publication number
EP0377803B1
EP0377803B1 EP89120546A EP89120546A EP0377803B1 EP 0377803 B1 EP0377803 B1 EP 0377803B1 EP 89120546 A EP89120546 A EP 89120546A EP 89120546 A EP89120546 A EP 89120546A EP 0377803 B1 EP0377803 B1 EP 0377803B1
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EP
European Patent Office
Prior art keywords
steam
iron
soleplate
tip
sole
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
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EP89120546A
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German (de)
French (fr)
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EP0377803A1 (en
Inventor
Bernd Lindstaedt
Günter Oppermann
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Braun GmbH
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Braun GmbH
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Priority to AT89120546T priority Critical patent/ATE90981T1/en
Publication of EP0377803A1 publication Critical patent/EP0377803A1/en
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    • 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
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/20—Arrangements for discharging the steam to the article being ironed

Definitions

  • the invention relates to a steam iron according to the preamble of claim 1.
  • Such a steam iron is known for example from DE-OS 35 45 753.
  • the steam iron described there has a steam chamber in which, controlled by a metering valve, water can be evaporated, the resulting steam then flowing into so-called evaporation chambers, from which it finally reaches the material to be ironed from a large number of steam outlet openings.
  • the steam chamber and the various evaporation chambers are connected to one another by passages which are formed on partition walls which define the division of the entire space filled with steam into a steam chamber and a plurality of evaporation chambers.
  • the partitions are all arranged in the rear area of the soleplate.
  • the iron described in the above-mentioned document has the advantage that if lime-containing water, for example tap water, is used to produce steam, the lime separation is almost exclusively due to the existing partition walls in the area of the steam chamber and hardly in the evaporation chambers he follows.
  • this steam iron has the disadvantage that the steam output, i.e. the amount of steam exiting from different steam outlet openings per unit of time, is quite uneven, with increasing distance from the partition arranged between the steam chamber and the associated evaporation chamber, that is, in the direction of the Tip of the iron, which decreases steam output.
  • an iron is known in which there are three steam outlet openings at the top of the iron soleplate, but which, with an unchanged outlet cross-section, expand more towards the ironing material in the form of so-called recesses than is the case with the other steam outlet openings .
  • the three steam outlet openings mentioned are connected to their own additional steam chamber, into which steam can be introduced by actuating a so-called deflection valve.
  • the steam can either emerge from all outlet openings or only from the three outlet openings arranged at the tip of the soleplate.
  • the steam output at the three outlet openings arranged at the top is significantly weaker than at the other outlet openings. This applies all the more if it is an outlet opening located in the rear area of the soleplate.
  • the steam output at the three steam openings at the tip of the soleplate is comparatively high.
  • the object of the invention is therefore to provide an easy-to-use steam iron which, while maintaining a limescale blockage and inexpensive production, enables a constructive structure, that is to say while maintaining a structure according to the preamble of claim 1, along the entire iron sole up to at the top of which has essentially the same steam output.
  • FIGS. 1 to 2 To avoid repetitions, the same position numbers are used in FIGS. 1 to 2 for correspondingly identical components.
  • the steam iron consists of an iron soleplate 1, preferably made of aluminum, which is provided on its underside shown in Fig. 2 with a sliding sole 2, for example with a sliding layer, not shown in the drawing, for the purpose of lower friction of the Iron soleplate can be coated on an ironing good.
  • the iron soleplate 1 in FIG. 1 essentially consists of a base body 5 which forms the shape of an isosceles triangle, the side surfaces 3 of which are curved. The side surfaces 3 converge at their upper end in FIG. 1 to form an iron sole tip 44.
  • a wall 6 rises from the base body 5 runs around the soleplate 1 and which is self-contained.
  • the end face 7 formed in FIG. 2 at the upper edge of the wall 6 runs parallel to the sliding sole 2.
  • a shoulder 8 adjoins the end face 7 radially inward, which serves to receive, center and seal a cover 9.
  • FIG. 1 the soleplate 1 is shown in plan view with the cover 9 removed.
  • the vaporization chamber 10 enclosed in FIGS. 1 and 2 by the iron soleplate 1, the wall 6 and the lid 9 is used to generate and forward the vapor to the vapor outlet openings 11 formed in this chamber 10 on the base body 5, which are one of the vaporization chamber 10 Establish a steam-conducting connection to the outside of the sliding sole 2.
  • Fig. 2 the drawing is followed by a housing provided with an iron handle, in which contact elements are provided for power supply, electronic switching elements for temperature control of the soleplate and a valve arrangement connected to a water tank for steam generation; however, these parts are not shown in the drawing.
  • the housing is centered and fastened on the soleplate 1 in FIG. 1 via centering bores 12 and via fastening means, which are not shown here.
  • the iron soleplate 1 has two threaded bores 13, via which a thermocouple controlling the temperature of the iron soleplate 1, which is not shown in the drawing, is fastened.
  • the platform 14 surrounding the upper threaded bore 13 in FIG. 1 serves as a flat support for the thermocouple on the heating element 15, in order to ensure a particularly good and rapid heat transfer from the heating element 15 to the thermocouple, so that the on and off behavior of the iron is particularly good is short.
  • a further threaded bore 16 is arranged, which is also surrounded by a second, circular platform 17 and which serves as a support for an overheating protection, not shown in the drawing, which interrupts the power supply to the heating element 15 when For example, the thermocouple is defective and the soleplate 1 would reach an impermissibly high temperature.
  • the threaded bores 18 to 21 serve for the pressure-tight fastening of the cover 9 on the wall 6.
  • the threaded bores 22 to 24 serve for fastening the housing provided with a handle on the soleplate 1.
  • a second wall 33 extends radially inside the wall 6, which begins on one side to the right of the center line 34 at the horizontally extending section of the first wall 6, which extends approximately to the second platform 17 at a distance from the left edge of the Leg 25 of the heating element 15 extends upward in the drawing, there turns, which then runs downward on the radially inner edge of the heating element 15, which bridges the heating element 15 horizontally slightly below the right of the centering hole 12, which then again on the radially outer edge of the Heating element 15 extends upwards in the drawing, which leaves the heating element 15 in the area of the threaded bore 19 and which then intersects the center line 34 via an arc 35 which forms the actual soleplate tip 44.
  • the second wall 33 runs symmetrically to the right wall 33.
  • the steam guide channels 36 formed by the wall 6, the second wall 33, the base body 5 and the cover 9 in FIG. 1 are connected to the evaporation chamber 10 via passages 37, as is also shown in FIG. 2, which are located radially inside the steam guide channels 36 lies and in which the largest part of the heating element 15 is formed.
  • the passages 37 have a rectangular cross section.
  • the passages 37 are formed at the upper end of the second wall 33 so that the lime which is forced to settle in the evaporation chamber 10 due to the lime content of the water cannot precipitate in the steam guide channels 36.
  • the second wall 33 thus forms the function of a limescale but also a water barrier.
  • the steam outlet openings 11 run along the edge of the wall 6 and the second wall 33 within the steam guide channels 36, the steam outlet openings 11, which are adjacent to each other in the longitudinal direction of the soleplate 1, have the same distance from one another.
  • the top three steam outlet openings according to FIG. 1 are provided with a larger cross section or diameter than the rest.
  • the drop-in area 41 shown in dashed lines in FIG. 1 for the amount of water discharged from the water tank via the valve arrangement lies radially inside the heating element 15 in the area of the section 42 connecting the two legs 25, 26.
  • the position of the drop-in area 41 was therefore chosen at this point, since in this area the heating element 15 has the dripping area 41 surrounds from three sides and therefore the highest temperature of the soleplate 1 occurs at this point.
  • Perpendicularly above the dripping-in area 41 at least one channel connected to the valve arrangement projects into the evaporation chamber 10 via an opening formed in the cover 9, the opening, the channel and the valve arrangement not being shown in the drawings.
  • the valve arrangement delivers drop or intermittent water from the storage tank into the evaporation chamber 10, in which the water then evaporates when the soleplate 1 is heated and is fed to the steam outlet openings 11 through the steam guide channels 36 and into the items to be ironed, which is arranged below the sliding sole 2 (not shown) penetrates.
  • the long steam guide channels 36 also ensure that the steam continues to heat up to the steam outlet openings 11.
  • the height h from the bottom 43 to the underside of the passages 37 is approximately 4/5 to 9/10 of the height H which results from the bottom 43 to the underside of the cover 9 (FIG. 2).
  • the steam iron according to the invention works as follows: As soon as water falls on the dripping-in area 41 in FIGS. 1 and 2, this begins to evaporate when the soleplate 1 is heated.
  • the steam flows evenly in all directions due to the symmetrical arrangement of the evaporation and outlet chamber 10, 36 and due to the uniform distribution of the passages 37, based on a corresponding number of associated steam outlet openings 11, whereby it is additionally heated by the soleplate 1 .
  • the lime settles uniformly and exclusively only on the bottom 43 of the evaporation chamber 10 due to the invention.
  • the overheated and decalcified steam flows through the passages 37 into the steam guide channels 36, from where it reaches the material to be ironed via the steam outlet openings 11 under the sliding sole 2.
  • the ironing material smeared by the iron soleplate 1 is equally well moistened at all points by the constant steam flow, in particular also in the region which is smeared by the iron soleplate 1 during ironing below the middle region (center line 34).

Abstract

The invention relates to a forwardly tapering electric steam iron which can be operated by hand and which has an evaporation chamber (10) which can be supplied with water from a water tank and is connected to the atmosphere via steam outlet ports (11) made in a heatable iron sole (1) and which is adjacent to the iron sole (1) for the purpose of heating the evaporation chamber (10). The steam outlet ports (11) have a larger area in the region of the tip (44) of the iron sole than in the rear region of the iron sole (1), in order to ensure a better steam distribution to the material to be ironed. <IMAGE>

Description

Die Erfindung betrifft ein Dampfbügeleisen nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a steam iron according to the preamble of claim 1.

Ein derartiges Dampfbügeleisen ist beispielsweise aus der DE-OS 35 45 753 bekannt. Das dort beschriebene Dampfbügeleisen weist eine Dampfkammer auf, in der, gesteuert durch ein Dosierventil, Wasser verdampft werden kann, wobei der entstehende Dampf dann in sogenannte Verdampfungskammern strömt, aus denen er schließlich aus einer Vielzahl von Dampfaustrittsöffnungen auf das Bügelgut gelangt. Die Dampfkammer und die verschiedenen Verdampfungskammern sind dabei durch Durchlässe miteinander verbunden, die an Trennwänden ausgebildet sind, welche die Aufteilung des gesamten von Dampf erfüllten Raums in eine Dampfkammer und mehrere Verdampfungskammern festlegen. Die Trennwände sind dabei alle im hinteren Bereich der Bügeleisensohle angeordnet.Such a steam iron is known for example from DE-OS 35 45 753. The steam iron described there has a steam chamber in which, controlled by a metering valve, water can be evaporated, the resulting steam then flowing into so-called evaporation chambers, from which it finally reaches the material to be ironed from a large number of steam outlet openings. The steam chamber and the various evaporation chambers are connected to one another by passages which are formed on partition walls which define the division of the entire space filled with steam into a steam chamber and a plurality of evaporation chambers. The partitions are all arranged in the rear area of the soleplate.

Das in der eingangs genannten Druckschrift beschriebene Bügeleisen hat zwar den Vorteil, daß dann, wenn zur Erzeugung von Dampf kalkhaltiges Wasser, beispielsweise also Leitungswasser, verwendet wird, die Abscheidung von Kalk aufgrund der vorhandenen Trennwände fast ausschließlich im Bereich der Dampfkammer und kaum in den Verdampfungskammern erfolgt.The iron described in the above-mentioned document has the advantage that if lime-containing water, for example tap water, is used to produce steam, the lime separation is almost exclusively due to the existing partition walls in the area of the steam chamber and hardly in the evaporation chambers he follows.

Andererseits weist dieses Dampfbügeleisen den Nachteil auf, daß die Dampfaustrittsleistung, das heißt die aus verschiedenen Dampfaustrittsöffnungen austretende Dampfmenge pro Zeiteinheit, recht ungleichmäßig ist, wobei mit zunehmender Entfernung von der jeweils zwischen der Dampfkammer und der zugehörigen Verdampfungskammer angeordneten Trennwand, das heißt, in Richtung der Spitze des Bügeleisens, die Dampfaustrittsleistung nachläßt.On the other hand, this steam iron has the disadvantage that the steam output, i.e. the amount of steam exiting from different steam outlet openings per unit of time, is quite uneven, with increasing distance from the partition arranged between the steam chamber and the associated evaporation chamber, that is, in the direction of the Tip of the iron, which decreases steam output.

Hierdurch wird das Bügeln von solchem Bügelgut, welches überwiegend mit der Spitze des Dampfbügeleisens geglättet wird - wie z.B. bei Hemden der Bereich um die Knöpfe und den Kragen und bei Hosen die Bügelfalten - relativ langwierig und auch kraftaufwendig.This will iron such ironing material, which is mostly smoothed with the tip of the steam iron - such as for shirts the area around the buttons and collar and for trousers the crease - relatively lengthy and also requires a lot of effort.

Aus der DE 21 36 050 B2 ist ein Bügeleisen bekannt, bei dem an der Spitze der Bügeleisensohle drei Dampfaustrittsöffnungen vorhanden sind, die bei unverändertem Austrittsquerschnitt sich aber in Richtung auf das Bügelgut in Form sogenannter Ausnehmungen stärker erweitern als dies bei den übrigen Dampfaustrittsöffnungen der Fall ist. Darüber hinaus sind die drei genannten Dampfaustrittsöffnungen mit einer eigenen weiteren Dampfkammer verbunden, in die Dampf durch Betätigung eines sogenannten Umlenkventils eingeleitet werden kann. Der Dampf kann bei dem bekannten Bügeleisen - je nach Stellung des manuell zu betätigenden Umlenkventils - entweder aus allen Austrittsöffnungen austreten oder nur aus den drei an der Spitze der Bügeleisensohle angeordneten Austrittsöffnungen. Im ersten Fall ist die Dampfaustrittsleistung an den drei an der Spitze angeordneten Austrittsöffnungen deutlich schwächer als an den übrigen Austrittsöffnungen. Dies gilt um so mehr, wenn es sich dabei um eine im hinteren Bereich der Bügeleisensohle gelegene Austrittsöffnung handelt. Im zweiten Fall dagegen ist die Dampfaustrittsleistung an den drei an der Spitze der Bügeleisensohle gelegenen Dampfaustrittsöffnungen vergleichsweise hoch.From DE 21 36 050 B2 an iron is known in which there are three steam outlet openings at the top of the iron soleplate, but which, with an unchanged outlet cross-section, expand more towards the ironing material in the form of so-called recesses than is the case with the other steam outlet openings . In addition, the three steam outlet openings mentioned are connected to their own additional steam chamber, into which steam can be introduced by actuating a so-called deflection valve. In the known iron, depending on the position of the manually operated deflection valve, the steam can either emerge from all outlet openings or only from the three outlet openings arranged at the tip of the soleplate. In the first case, the steam output at the three outlet openings arranged at the top is significantly weaker than at the other outlet openings. This applies all the more if it is an outlet opening located in the rear area of the soleplate. In the second case, on the other hand, the steam output at the three steam openings at the tip of the soleplate is comparatively high.

Nachteilig an diesem Bügeleisen ist neben der Notwendigkeit, immer wieder das Umlenkventil bedienen zu müssen, auch der mit der Dampfkammer und dem Umlenkventil verbundene Fertigungsaufwand, der zu einer Verteuerung des Bügeleisens führt.In addition to the necessity of having to operate the deflection valve again and again, the disadvantage of this iron is also the manufacturing outlay associated with the steam chamber and the deflection valve, which leads to an increase in the price of the iron.

Aufgabe der Erfindung ist es daher, ein einfach zu bedienendes Dampfbügeleisen zu schaffen, welches unter Beibehaltung eines die Ablagerung von Kalk behindernden und eine preiswerte Fertigung ermöglichenden konstruktiven Aufbaus, das heißt unter Beibehaltung eines Aufbaus nach dem Oberbegriff des Patentanspruchs 1, längs der gesamten Bügeleisensohle bis zu deren Spitze eine im wesentlichen gleiche Dampfaustrittsleistung aufweist.The object of the invention is therefore to provide an easy-to-use steam iron which, while maintaining a limescale blockage and inexpensive production, enables a constructive structure, that is to say while maintaining a structure according to the preamble of claim 1, along the entire iron sole up to at the top of which has essentially the same steam output.

Diese Aufgabe wird für ein Dampfbügeleisen nach dem Oberbegriff des Patentanspruchs 1 durch die im kennzeichnenden Teil dieses Patentanspruchs enthaltenen Merkmale gelöst. Dadurch, daß sich die Austrittsquerschnitte der Dampfaustrittsöffnungen in Richtung Spitze der Bügeleisensohle ständig vergrößern, wird der für die Dampfaustrittsleistung negative Einfluß, nämlich daß der Dampfdruck auf dem Weg des Dampfes von der zugehörigen Trennwand bis zur Spitze der Bügeleisensohle ständig abnimmt, ausgeglichen, da größere Dampfaustrittsöffnungen bei vermindertem Dampfdruck dann wieder etwa die gleiche Dampfmenge pro Zeiteinheit abgeben können.This object is achieved for a steam iron according to the preamble of claim 1 by the features contained in the characterizing part of this claim. Due to the fact that the outlet cross-sections of the steam outlet openings continuously increase towards the tip of the iron soleplate, the negative influence on the steam outlet capacity, namely that the steam pressure continuously decreases on the way of the steam from the associated partition to the tip of the iron soleplate, is compensated for, since larger steam outlet openings can then emit about the same amount of steam per unit of time at reduced steam pressure.

Es hat sich für die Gleichmäßigkeit der Dampfaustrittsleistung als besonders günstig erwiesen (vgl. Anspruch 2), die Austrittsquerschnitte der größten an der Spitze der Bügeleisensohle gelegenen Dampfaustrittsöffnungen etwa viermal so groß auszubilden wie die kleinsten im hinteren Bereich der Bügeleisensohle und damit in der Nähe einer Trennwand angeordneten Dampfaustrittsöffnungen.For the uniformity of the steam outlet performance, it has proven particularly favorable (cf. claim 2) to design the outlet cross sections of the largest steam outlet openings located at the tip of the iron soleplate to be approximately four times as large as the smallest in the rear area of the iron soleplate and thus in the vicinity of a partition arranged steam outlet openings.

Ordnet man gemäß Anspruch 3 an der Spitze der Bügeleisensohle drei Dampfaustrittsöffnungen mit etwa gleich großem Austrittsquerschnitt an, während alle anderen Dampfaustrittsöffnungen kleinere Austrittsquerschnitte aufweisen, so wird dadurch im Bereich der Spitze der Bügeleisensohle zur Glättung der Problembereiche eines Bügelgutes bei etwa gleicher Dampfaustrittsleistung pro Dampfaustrittsöffnung, auch im mittleren Bereich der Bügeleisensohle eine ausreichende Dampfmenge auf das Bügelgut abgegeben. Auch beim Bügeln von kleineren Bügelflächen, bei dem vorwiegend nur mit der Bügeleisensohlenspitze gearbeitet wird, macht sich eine Vergrößerung der vorderen Austrittsquerschnitte besonders vorteilhaft bemerkbar. Hierdurch wird nämlich aufgrund einer ausreichend großen Dampfaustrittsleistung auch ein Ansengen des Stoffes weitgehenst vermieden und es können Falten durch den höheren Dampfaustritt in kürzester Zelt glattgebügelt werden.If, according to claim 3, three steam outlet openings are arranged at the tip of the iron soleplate with approximately the same outlet cross-section, while all other steam outlet openings have smaller outlet cross-sections, then in the area of the tip of the iron soleplate for smoothing the problem areas of an ironing iron with approximately the same steam outlet capacity A sufficient amount of steam is emitted onto the ironing material per steam outlet opening, also in the central area of the soleplate. Even when ironing smaller ironing areas, in which work is mainly carried out with the soleplate tip, an enlargement of the front outlet cross-sections is particularly advantageous. Because of a sufficiently large steam output, this also largely avoids scorching of the fabric and folds can be ironed out in the shortest tent due to the higher steam output.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

Fig. 1
Draufsicht auf eine erfindungsgemäße Bügeleisensohle, die mit einer Verdampfungskammer und Dampfaustrittskammer versehen ist, und
Fig. 2
Teillängsschnitt durch die Bügeleisensohle gemäß der Schnittführung I-I in Fig. 1, jedoch bei verschlossener Verdampfungskammer.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
Fig. 1
Top view of an iron soleplate according to the invention, which is provided with an evaporation chamber and steam outlet chamber, and
Fig. 2
Partial longitudinal section through the soleplate according to section II in Fig. 1, but with the evaporation chamber closed.

Zur Vermeidung von Wiederholungen werden in den Fig. 1 bis 2 für entsprechend gleiche Bauteile gleiche Positionsnummern verwendet.To avoid repetitions, the same position numbers are used in FIGS. 1 to 2 for correspondingly identical components.

In Fig. 1 und 2 besteht das Dampfbügeleisen aus einer vorzugsweise aus Aluminium hergestellten Bügeleisensohle 1, die an ihrer in Fig. 2 dargestellten Unterseite mit einer Gleitsohle 2 versehen ist, die beispielsweise mit einer in der Zeichnung nicht dargestellten Gleitschicht zum Zwecke der geringeren Reibung der Bügeleisensohle auf einem Bügelgut beschichtet sein kann. Die Bügeleisensohle 1 besteht in Fig. 1 im wesentlichen aus einem die Form eines gleichschenkligen Dreiecks bildenden Grundkörpers 5, dessen Seitenflächen 3 gekrümmt sind. Die Seitenflächen 3 laufen an ihrem in Fig. 1 oberen Ende zu einer Bügeleisensohlenspitze 44 zusammen. In geringem Abstand vom Rand 4 der Bügelsohle 1 erhebt sich vom Grundkörper 5 eine Wand 6, die rund um die Bügeleisensohle 1 verläuft und die in sich geschlossen ist.In Figs. 1 and 2, the steam iron consists of an iron soleplate 1, preferably made of aluminum, which is provided on its underside shown in Fig. 2 with a sliding sole 2, for example with a sliding layer, not shown in the drawing, for the purpose of lower friction of the Iron soleplate can be coated on an ironing good. The iron soleplate 1 in FIG. 1 essentially consists of a base body 5 which forms the shape of an isosceles triangle, the side surfaces 3 of which are curved. The side surfaces 3 converge at their upper end in FIG. 1 to form an iron sole tip 44. At a short distance from the edge 4 of the soleplate 1, a wall 6 rises from the base body 5 runs around the soleplate 1 and which is self-contained.

Die in Fig. 2 am oberen Rand der Wand 6 ausgebildete Stirnfläche 7 verläuft parallel zur Gleitsohle 2. In Fig. 2 schließt sich radial nach innen an die Stirnfläche 7 ein Absatz 8 an, der zur Aufnahme, Zentrierung und Abdichtung eines Deckels 9 dient.The end face 7 formed in FIG. 2 at the upper edge of the wall 6 runs parallel to the sliding sole 2. In FIG. 2, a shoulder 8 adjoins the end face 7 radially inward, which serves to receive, center and seal a cover 9.

In Fig. 1 ist die Bügeleisensohle 1 in Draufsicht bei abgenommenem Deckel 9 dargestellt. Die in den Fig. 1 und 2 von der Bügeleisensohle 1, der Wand 6 und dem Deckel 9 eingeschlossene Verdampfungskammer 10 dient zur Erzeugung und Weiterleitung des Dampfes zu den in dieser Kammer 10 am Grundkörper 5 ausgebildeten Dampfaustrittsöffnungen 11, die von der Verdampfungskammer 10 eine den Dampf leitende Verbindung nach außen zu der Gleitsohle 2 herstellen.In Fig. 1 the soleplate 1 is shown in plan view with the cover 9 removed. The vaporization chamber 10 enclosed in FIGS. 1 and 2 by the iron soleplate 1, the wall 6 and the lid 9 is used to generate and forward the vapor to the vapor outlet openings 11 formed in this chamber 10 on the base body 5, which are one of the vaporization chamber 10 Establish a steam-conducting connection to the outside of the sliding sole 2.

In Fig. 2 schließt sich in der Zeichnung nach oben ein mit einem Bügeleisengriff versehenes Gehäuse an, in dem zur Stromversorgung Kontaktelemente, zur Temperaturregelung der Bügeleisensohle elektronische Schaltelemente und zur Dampferzeugung eine mit einem Wassertank verbundene Ventilanordndung vorgesehen sind; diese erwähnten Teile sind jedoch in der Zeichnung nicht dargestellt.In Fig. 2, the drawing is followed by a housing provided with an iron handle, in which contact elements are provided for power supply, electronic switching elements for temperature control of the soleplate and a valve arrangement connected to a water tank for steam generation; however, these parts are not shown in the drawing.

Das Gehäuse ist in Fig. 1 über Zentrierbohrungen 12 und über Befestigungsmittel, die hier nicht dargestellt sind, auf der Bügeleisensohle 1 zentriert und befestigt. Die Bügeleisensohle 1 weist in Fig. 1 zwei Gewindebohrungen 13 auf, über die ein die Temperatur der Bügeleisensohle 1 steuerndes Thermoelement, das in der Zeichnung nicht näher dargestellt ist, befestigt ist.The housing is centered and fastened on the soleplate 1 in FIG. 1 via centering bores 12 and via fastening means, which are not shown here. 1, the iron soleplate 1 has two threaded bores 13, via which a thermocouple controlling the temperature of the iron soleplate 1, which is not shown in the drawing, is fastened.

Die in Fig. 1 die obere Gewindebohrung 13 umgebende Plattform 14 dient als ebene Auflage für das Thermoelement am Heizelement 15, um einen besonders guten und schnellen Wärmeübergang von dem Heizelement 15 auf das Thermoelement zu gewährleisten, damit das Ein- bzw. Ausschaltverhalten des Bügeleisens besonders kurz ist.The platform 14 surrounding the upper threaded bore 13 in FIG. 1 serves as a flat support for the thermocouple on the heating element 15, in order to ensure a particularly good and rapid heat transfer from the heating element 15 to the thermocouple, so that the on and off behavior of the iron is particularly good is short.

Auf der gegenüberliegenden Seite der oberen Gewindebohrung 13 ist eine weitere Gewindebohrung 16 angeordnet, die ebenfalls von einer zweiten, kreisförmigen Plattform 17 umgeben ist und die als Auflage für einen in der Zeichnung nicht dargestellten Überhitzungsschutz dient, der die Stromzufuhr zum Heizelement 15 dann unterbricht, wenn beispielsweise das Thermoelement defekt ist und dadurch die Bügeleisensohle 1 eine unzulässig hohe Temperatur erreichen würde. Die Gewindebohrungen 18 bis 21 dienen zur druckdichten Befestigung des Deckels 9 auf der Wand 6. Die Gewindebohrungen 22 bis 24 dienen zur Befestigung des mit einem Handgriff versehenen Gehäuses auf der Bügeleisensohle 1.On the opposite side of the upper threaded bore 13, a further threaded bore 16 is arranged, which is also surrounded by a second, circular platform 17 and which serves as a support for an overheating protection, not shown in the drawing, which interrupts the power supply to the heating element 15 when For example, the thermocouple is defective and the soleplate 1 would reach an impermissibly high temperature. The threaded bores 18 to 21 serve for the pressure-tight fastening of the cover 9 on the wall 6. The threaded bores 22 to 24 serve for fastening the housing provided with a handle on the soleplate 1.

In Fig. 1 und 2 verläuft radial innerhalb der Wand 6 eine zweite Wand 33, die auf der einen Seite rechts von der Mittellinie 34 am horizontal verlaufenden Abschnitt der ersten Wand 6 beginnt, die etwa bis zur zweiten Plattform 17 im Abstand vom linken Rand des Schenkels 25 des Heizelements 15 in der Zeichnung nach oben verläuft, dort wendet, die dann am radial inneren Rand des Heizelements 15 nach unten verläuft, die geringfügig unterhalb rechts von der Zentrierbohrung 12 horizontal das Heizelement 15 überbrückt, die anschließend wieder am radial äußeren Rand des Heizelements 15 in der Zeichnung nach oben verläuft, die im Bereich der Gewindebohrung 19 das Heizelement 15 nach oben verläßt und die dann über einen Kreisbogen 35, der die eigentliche Bügeleisensohlenspitze 44 bildet, die Mittellinie 34 schneidet. Auf der linken Seite der Mittellinie 34 verläuft die zweite Wand 33 symmetrisch zur rechten Wand 33.1 and 2, a second wall 33 extends radially inside the wall 6, which begins on one side to the right of the center line 34 at the horizontally extending section of the first wall 6, which extends approximately to the second platform 17 at a distance from the left edge of the Leg 25 of the heating element 15 extends upward in the drawing, there turns, which then runs downward on the radially inner edge of the heating element 15, which bridges the heating element 15 horizontally slightly below the right of the centering hole 12, which then again on the radially outer edge of the Heating element 15 extends upwards in the drawing, which leaves the heating element 15 in the area of the threaded bore 19 and which then intersects the center line 34 via an arc 35 which forms the actual soleplate tip 44. On the left side of the center line 34, the second wall 33 runs symmetrically to the right wall 33.

Die in Fig. 1 von der Wand 6, der zweiten Wand 33, dem Grundkörper 5 und dem Deckel 9 gebildete Dampfführungskanäle 36 ist über Durchlässe 37, wie auch in Fig. 2 dargestellt, mit der Verdampfungskammer 10 verbunden, die radial innerhalb der Dampfführungskanäle 36 liegt und in der auch der größte Teil des Heizelements 15 ausgebildet ist. Die Durchlässe 37 haben einen rechteckigen Querschnitt. Die Durchlässe 37 sind am oberen Ende der zweiten Wand 33 ausgebildet, damit der in der Verdampfungskammer 10 sich zwangsweise aufgrund des Kalkgehaltes des Wassers absetzende Kalk nicht in den Dampfführungskanälen 36 niederschlagen kann. Die zweite Wand 33 bildet somit die Funktion einer Kalk- aber auch Wassersperre.The steam guide channels 36 formed by the wall 6, the second wall 33, the base body 5 and the cover 9 in FIG. 1 are connected to the evaporation chamber 10 via passages 37, as is also shown in FIG. 2, which are located radially inside the steam guide channels 36 lies and in which the largest part of the heating element 15 is formed. The passages 37 have a rectangular cross section. The passages 37 are formed at the upper end of the second wall 33 so that the lime which is forced to settle in the evaporation chamber 10 due to the lime content of the water cannot precipitate in the steam guide channels 36. The second wall 33 thus forms the function of a limescale but also a water barrier.

In Fig. 1 bildet der Abschnitt der zweiten Wand 33, der zu beiden Seiten des Heizelements 15 verläuft, mit dem Deckel 9 und dem Grundkörper 5 auf beiden Seiten je einen weiten Dampfführungskanal 39, 40, die beide für einen größeren Dampfausstoß sorgen. Innerhalb der Dampfführungskanäle 36 verlaufen am Rand der Wand 6 und der zweiten Wand 33 die Dampfaustrittsöffnungen 11, deren jeweils in Längsrichtung der Bügeleisensohle 1 benachbarte Dampfaustrittsöffnungen 11 einen gleichen Abstand voneinander haben. An der Bügeleisensohlenspitze 44 sind die nach Fig. 1 obersten drei Dampfaustrittsöffnungen gegenüber den restlichen mit einem größeren Querschnitt bzw. Durchmesser versehen.In FIG. 1, the section of the second wall 33 that extends on both sides of the heating element 15, with the cover 9 and the base body 5, forms a wide steam guide channel 39, 40 on both sides, both of which ensure a greater steam output. The steam outlet openings 11 run along the edge of the wall 6 and the second wall 33 within the steam guide channels 36, the steam outlet openings 11, which are adjacent to each other in the longitudinal direction of the soleplate 1, have the same distance from one another. At the soleplate tip 44, the top three steam outlet openings according to FIG. 1 are provided with a larger cross section or diameter than the rest.

Der in Fig. 1 gestrichelt dargestellte Eintropfbereich 41 für die aus dem Wassertank über die Ventilanordnung abgegebene Wassermenge liegt radial innerhalb des Heizelements 15 im Bereich des die beiden Schenkel 25, 26 verbindenden Abschnitts 42. Die Lage des Eintropfbereiches 41 wurde deshalb an dieser Stelle gewählt, da in diesem Bereich das Heizelement 15 den Eintropfbereich 41 von drei Seiten her umgibt und daher an dieser Stelle die höchste Temperatur der Bügeleisensohle 1 auftritt. Senkrecht oberhalb des Eintropfbereiches 41 ragt über eine in dem Deckel 9 ausgebildete Öffnung mindestens ein mit der Ventilanordnung verbundener Kanal in die Verdampfungskammer 10 hinein, wobei die Öffnung, der Kanal und die Ventilanordnung in den Zeichnungen nicht dargestellt sind. Die Ventilanordnung gibt bei entsprechender Stellung tropfen- bzw. stoßweise Wasser aus dem Vorratstank in die Verdampfungskammer 10 ab, in der dann das Wasser bei aufgeheizter Bügeleisensohle 1 verdampft und durch den sich bildenden Dampfdruck über die Dampfführungskanäle 36 den Dampfaustrittsöffnungen 11 zugeführt und in das Bügelgut, welches unterhalb der Gleitsohle 2 angeordnet ist (nicht dargestellt), eindringt. Die langen Dampfführungskanäle 36 sorgen auch dafür, daß sich der Dampf bis zu den Dampfaustrittsöffnungen 11 noch weiter erhitzt. Die Höhe h vom Boden 43 bis zur Unterseite der Durchlässe 37 beträgt etwa 4/5 bis 9/10 der Höhe H, die sich vom Boden 43 bis zur Unterseite des Deckels 9 ergibt (Fig. 2).The drop-in area 41 shown in dashed lines in FIG. 1 for the amount of water discharged from the water tank via the valve arrangement lies radially inside the heating element 15 in the area of the section 42 connecting the two legs 25, 26. The position of the drop-in area 41 was therefore chosen at this point, since in this area the heating element 15 has the dripping area 41 surrounds from three sides and therefore the highest temperature of the soleplate 1 occurs at this point. Perpendicularly above the dripping-in area 41, at least one channel connected to the valve arrangement projects into the evaporation chamber 10 via an opening formed in the cover 9, the opening, the channel and the valve arrangement not being shown in the drawings. With the appropriate position, the valve arrangement delivers drop or intermittent water from the storage tank into the evaporation chamber 10, in which the water then evaporates when the soleplate 1 is heated and is fed to the steam outlet openings 11 through the steam guide channels 36 and into the items to be ironed, which is arranged below the sliding sole 2 (not shown) penetrates. The long steam guide channels 36 also ensure that the steam continues to heat up to the steam outlet openings 11. The height h from the bottom 43 to the underside of the passages 37 is approximately 4/5 to 9/10 of the height H which results from the bottom 43 to the underside of the cover 9 (FIG. 2).

Die Wirkungsweise des erfindungsgemäßen Dampfbügeleisens ist folgende:
Sobald in Fig. 1 und 2 Wasser auf den Eintropfbereich 41 fällt, beginnt dieses bei erhitzter Bügeleisensohle 1 zu verdampfen. Der Dampf strömt aufgrund der symmetrischen Anordnung der Verdampfungs- und Auslaßkammer 10, 36 und aufgrund der gleichmäßigen Verteilung der Durchlässe 37, bezogen auf eine entsprechende Anzahl von zugehörigen Dampfaustrittsöffnungen 11, gleichmäßig nach allen Richtungen, wobei er dabei noch zusätzlich von der Bügeleisensohle 1 erhitzt wird. Während der Dampfbildung setzt sich der Kalk aufgrund der Erfindung gleichmäßig und ausschließlich nur am Boden 43 der Verdampfungskammer 10 ab. Der überhitzte und entkalkte Dampf strömt über die Durchlässe 37 in die Dampfführungskanäle 36, von wo er über die Dampfaustrittsöffnungen 11 unter die Gleitsohle 2 in das zu bügelnde Gut gelangt. Durch die Erfindung wird erreicht, daß das von der Bügeleisensohle 1 bestrichene Bügelgut durch den konstanten Dampfstrom an allen Stellen gleichermaßen gut befeuchtet wird, inbesondere auch in dem Bereich, der unterhalb des mittleren Bereichs (Mittellinie 34) von der Bügeleisensohle 1 beim Bügeln bestrichen wird.The steam iron according to the invention works as follows:
As soon as water falls on the dripping-in area 41 in FIGS. 1 and 2, this begins to evaporate when the soleplate 1 is heated. The steam flows evenly in all directions due to the symmetrical arrangement of the evaporation and outlet chamber 10, 36 and due to the uniform distribution of the passages 37, based on a corresponding number of associated steam outlet openings 11, whereby it is additionally heated by the soleplate 1 . During the vapor formation, the lime settles uniformly and exclusively only on the bottom 43 of the evaporation chamber 10 due to the invention. The overheated and decalcified steam flows through the passages 37 into the steam guide channels 36, from where it reaches the material to be ironed via the steam outlet openings 11 under the sliding sole 2. It is achieved by the invention that the ironing material smeared by the iron soleplate 1 is equally well moistened at all points by the constant steam flow, in particular also in the region which is smeared by the iron soleplate 1 during ironing below the middle region (center line 34).

Claims (3)

  1. An electric steam iron to be operated by hand, the heated iron sole (1) of which has a tip (44) in its front area and steam exit apertures (11) on its bottom side, comprising an evaporation chamber (10) to which water can be supplied at an injection or drip-in point (41) for the purpose of steam generation and which communicates with the steam exit apertures (11) through passages (37) and steam ducts (36), the said injection or drip-in point (41) for the water being arranged in the area of the tip (44) of the iron sole (1), while the passages (37) leading to the steam ducts (36) are arranged at the sole's rear area (45),
    characterized in that the opening cross-sections of the steam exit apertures (11) are increasing constantly from the rear area (45) of the iron sole (1) up to its tip (44).
  2. A steam iron as claimed in claim 1,
    characterized in that the opening cross-sections of the largest steam exit apertures (11) maximally amount to four times the opening cross-section of the smallest steam exit apertures (11).
  3. A steam iron as claimed in claim 1,
    characterized in that three steam exit apertures (11) having an equally large opening cross-section are arranged at the tip (44) of the iron sole (1) and symmetrically in relation to it, while all other steam exit apertures (11) have smaller opening cross-sections.
EP89120546A 1989-01-13 1989-11-07 Electric steam iron Expired - Lifetime EP0377803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89120546T ATE90981T1 (en) 1989-01-13 1989-11-07 ELECTRIC STEAM IRON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901024A DE3901024A1 (en) 1989-01-13 1989-01-13 ELECTRIC STEAM IRON
DE3901024 1989-01-13

Publications (2)

Publication Number Publication Date
EP0377803A1 EP0377803A1 (en) 1990-07-18
EP0377803B1 true EP0377803B1 (en) 1993-06-23

Family

ID=6372121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120546A Expired - Lifetime EP0377803B1 (en) 1989-01-13 1989-11-07 Electric steam iron

Country Status (4)

Country Link
EP (1) EP0377803B1 (en)
AT (1) ATE90981T1 (en)
DE (2) DE3901024A1 (en)
ES (1) ES2042938T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2704247B1 (en) * 1993-04-23 1995-11-10 Moulinex Sa SOLE OF AN ELECTRIC STEAM IRON.
DE4422087A1 (en) * 1994-06-24 1996-01-11 Braun Ag Domestic steam iron, giving broad delivery of steam
EP0676498A3 (en) * 1994-04-06 1996-04-17 Braun Ag Outlet and distribution of steam.
FR2767542B1 (en) * 1997-08-21 1999-10-08 Seb Sa STEAM IRON SOLE HAVING STEAM PASSING HOLES

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425598A (en) * 1944-05-30 1947-08-12 Philco Corp Steam electric iron
US3722117A (en) * 1972-05-15 1973-03-27 Gen Electric Steam nozzle iron
FR2337780A1 (en) * 1976-01-12 1977-08-05 Seb Sa ELECTRIC STEAM IRON
DE7837620U1 (en) * 1977-12-21 1980-06-12 Seb S.A., Selongey, Cote-D'or (Frankreich) Electric steam iron
US4665637A (en) * 1985-07-26 1987-05-19 Braun Aktiengesellschaft Sole plate coating for a fabric pressing device
DE3545753A1 (en) * 1985-12-21 1987-06-25 Braun Ag Electric steam iron
IT8721064V0 (en) * 1987-03-09 1987-03-09 Ronchi Costantino ELECTRIC HOTPLATE FOR STEAM IRONING.

Also Published As

Publication number Publication date
DE3901024C2 (en) 1990-10-25
ATE90981T1 (en) 1993-07-15
DE58904796D1 (en) 1993-07-29
EP0377803A1 (en) 1990-07-18
DE3901024A1 (en) 1990-07-26
ES2042938T3 (en) 1993-12-16

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