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EP0665321B1 - Water injection device for steam iron - Google Patents

Water injection device for steam iron Download PDF

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Publication number
EP0665321B1
EP0665321B1 EP94117143A EP94117143A EP0665321B1 EP 0665321 B1 EP0665321 B1 EP 0665321B1 EP 94117143 A EP94117143 A EP 94117143A EP 94117143 A EP94117143 A EP 94117143A EP 0665321 B1 EP0665321 B1 EP 0665321B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve pin
proportioning device
pin
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94117143A
Other languages
German (de)
French (fr)
Other versions
EP0665321A1 (en
Inventor
Augustin Auria
Francesc Pons
Pedro Perez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP0665321A1 publication Critical patent/EP0665321A1/en
Application granted granted Critical
Publication of EP0665321B1 publication Critical patent/EP0665321B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand 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
    • D06F75/18—Hand 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

Definitions

  • the invention relates to a water inlet device for steam irons with one between a water tank and an evaporation chamber arranged valve consisting of a valve element with one valve opening and one in the valve opening sealed valve pin with a longitudinal groove, which in a first position closes the valve opening and in a second Position is movable in the two ends of the longitudinal groove are open on both sides of the valve opening.
  • a water inlet for steam irons at the beginning mentioned type is known from EP-B-0 014 643.
  • the device consists of the valve element of the first valve from a ring-shaped part made of elastomer material, which on its Inner wall has an essentially radial, flexible lip, which limits the valve opening.
  • the valve pin is only axially movable with respect to the valve element, three different ones Positions are provided in which the valve pin can be locked with the aid of a locking mechanism.
  • the two ends of the longitudinal groove are in an end position on the same side of the valve opening, with the valve pin closes the valve opening.
  • the longitudinal groove on both sides of the valve opening the cross section of the longitudinal groove located within the lip which in the amount of water introduced into the evaporation chamber is defined.
  • This Cross section is due to appropriate training Longitudinal groove in the two positions, the middle and the second End position, of different sizes, so that depending on the selected Position a stronger or a weaker steam generation can be chosen. One way to generate a burst of steam is not scheduled.
  • FR-B-2 337 780 is also a water inlet device known for steam irons, by turning the valve pin the first valve is opened accordingly its open position one or more on the valve pin trained holes in a formed on the valve element engage radial opening so that water doses from the Water container through the holes in an arranged on the valve pin Longitudinal bore from where this goes into the evaporation chamber flows in.
  • the holes formed on the valve pin can with impurities due to their relatively small Diameter - because much larger holes are due the thickness of the valve pin hardly possible - easy to clog to lead. Continuous flow control on the first valve is hardly possible.
  • the invention is therefore based on the object of a water inlet device to create for steam irons that are simply constructed and is inexpensive to manufacture, dealing with a provides continuous regulation of the amount of steam generated, which is easy to regulate and clean, and which is less difficult due to constrictions clogged.
  • the water inlet device according to the invention can be opened easily by turning the valve pin and close, with the valve pin in the respective position is held frictionally, so that additional facilities such as the locking mechanism required in the prior art for locking of the valve pin in the respective position can be dispensed with are.
  • Stepless regulation of the evaporation chamber the amount of water introduced in the unit of time and the corresponding amount amount of steam generated can be with the first valve according to the invention can be easily achieved.
  • the Cross groove in the valve pin with the opening in the valve element created an aperture, the passage cross section by turning the valve pin is changeable. With the help of this aperture the amount of steam generated to meet the different needs Ironing can be easily adjusted.
  • the adjustment range the aperture is determined by the length of the transverse groove.
  • cross groove according to the features of the claim 3 extends over a circumferential angle of up to 180 °.
  • the third is suitable Position above all for the temporary increase in steam generation, without this changing the amount of steam by turning the valve pin. Above all, with With the help of this third position a so-called burst of steam causes where the amount of steam temporarily generated is the greatest possible amount of steam that can be generated in continuous operation exceeds.
  • the features of claim 5 are provided according to the invention.
  • the formation of the second longitudinal groove enables a simple one Valve structure and one of the other valve functions independent dimensioning of the passage cross section in the third Position of the valve pin.
  • This configuration continues Advantage that the third position with increased steam generation every previously set position of the valve pin, i.e. both can be reached from the first as well as from the second position.
  • the valve pin can work without disadvantage the first valve can also be moved in the axial direction, to thereby generate a burst of steam, for example, through the second valve to enable. By turning the valve pin selectable valve positions are not disturbed by this. The Actuation of the additional valve function can therefore be different Extend the positions of the valve pin.
  • the effective passage cross section in the fourth position so large that the amount of water introduced into the evaporation chamber automatic cleaning of the nozzle system.
  • the increased Water supply can be in the fourth position of the valve pin can be easily achieved in that the second longitudinal groove has a section of larger cross section, the two ends only in the fourth position on both sides outside the valve opening lie (claim 7).
  • the compression spring is on the one hand the first valve is always in its closed position during the loosening process brought and held and on the other hand the compression spring itself simply guided on the valve pin.
  • the third and / or fourth position of the valve pin only by special Handles or measures are achieved, that is, with normal Rotary movement of the operating button can be the third and / or fourth position of the valve cannot be reached.
  • the latter positions are only possible, for example, in that the valve additionally in a predetermined position still has to be axially shifted from the normal dosing position (normal steam mode) either in the third or fourth position.
  • Such unlocking means can but also formed by other release or locking devices will.
  • the unlocking means are formed by a recess, by only in a certain position of the valve pin this with its projection upwards from the wall of the iron what can be extracted from the characteristics of the Claim 12 results.
  • a second embodiment according to the features of the claim 13 the gushing inflow of water into solved the steam chamber in that the valve pin of a Sleeve is formed in which a second valve is arranged.
  • the valve pin thus exercises the normal drip function with the valve element, while the second valve instead of the separate one Longitudinal groove in the first embodiment, the gushy or accelerated inflow controls.
  • valve rod inserted into the valve pin from the side where the Longitudinal and transverse grooves are formed.
  • a spring ensures that the second valve is always kept in its flow position becomes.
  • the operating button runs concentric to the push button and when pressing the This push button pushes into the existing in the actuation button Space. This arrangement makes access particularly easy and allows easy handling without a separate Space for the push button must be provided.
  • FIG. 1 and 4 shows a section of a water container 1 and an underlying vaporization chamber 2 of a steam iron.
  • the water tank 1 and the evaporation chamber 2 are separated from each other by a wall 3.
  • the valve element 5 consists of elastomeric material and has the shape of an annular disc with a by a cylindrical collar 6 limited central valve opening 7 and a ring collar 8 adjacent to the disc edge engages in the opening 4.
  • In the valve opening 7 is the lower one End of a cylindrical valve pin 9 arranged by the Collar 6 is tightly covered.
  • valve pin 9 which is in Fig. 1 to 3 of a solid rod is formed, extends through the water tank according to FIG. 1 1 and carries on its upper, protruding from the water tank 1 End a cylindrical button 10 larger Diameter.
  • the valve pin 9 and the button 10 form one piece Component made of a temperature-resistant plastic is made.
  • the upper end of the valve pin 9 is in one stepped bore 11 in the wall 12 of the water tank 1 rotatable stored.
  • FIG. 1 there is between the wall 12 and the button 10 a compression spring 13 which is slightly biased and which the valve pin 9 holds in the axial position shown in FIG. 1, which is formed by a radially projecting on the valve pin 9 Nose 14 is determined on the inside of the Water tank 1 abuts the wall 12.
  • the valve pin 9 at its lower end two at a distance longitudinal grooves 15, 16 arranged from one another and a transverse groove 17 on.
  • the longitudinal groove 15 extends from the lower end of the valve pin 9 to one end of the transverse groove 17 and has in the longitudinal direction seen a constant cross section.
  • the transverse groove 17 opens into the longitudinal groove 15 and extends in the circumferential direction over a circumferential angle of about 160 °, their cross section with increasing distance from the longitudinal groove 15 decreases, as shown in FIG. 5 shows.
  • the transverse groove 17 is located in that shown in Figure 1 Position of the valve pin 9 in an area of the collar 6, the an opening 18 formed by a radial slot through which the transverse groove 17 can be connected to the interior of the water tank 1 is.
  • the width of the opening 18 is the same or slightly larger than the width of the longitudinal groove 15.
  • the longitudinal groove 16 is located on the side opposite the transverse groove 17 the valve pin 9, approximately in the middle between the longitudinal groove 15 and the end of the transverse groove 17.
  • the upper end of the longitudinal groove 16 is outside of FIG. 1 Valve opening 7 at such a distance from the collar 6 that in all positions of the valve pin 9, the longitudinal groove 16 with their maximum passage cross-section to the interior of the water tank 1 remains connected.
  • the lower end of the longitudinal groove 16 is at a distance from the end of the cylindrical surface of the Valve pin 9 is arranged and is in that shown in Figure 1 Position of the valve pin 9 within the valve opening 7. In this position of the valve pin 9 is therefore the longitudinal groove 16 closed to the evaporation chamber 2.
  • the longitudinal groove 16 is made from a lower section 19 and an upper section 20, which are connected by a short stepped transition 21.
  • the section 19 has a smaller width and a smaller one Depth than section 20. However, its cross section is larger than the cross section of the longitudinal groove 15.
  • the cross section of the section 20 is about twice the cross section of the section 19th
  • the different setting options are described below with reference to FIG explained in more detail with the described Water inlet device can be reached.
  • the individual pictures a to f of Figure 3 each show the valve element 5 and the valve pin 9 with its actuating button 10 in the different Positions that are possible.
  • a top view of the with A marked button 10 illustrates the respective Angular position of the valve pin 9.
  • valve pin is in its closed position. This position is reached when in the illustration 2, the valve pin 9 counterclockwise by approximately 100 ° is rotated.
  • the transverse groove 17 is in this position the opening 18 separated and closed by the collar 6.
  • the Opening 18 is closed by the outer surface of the valve pin 9.
  • the lower end of the longitudinal groove 16 is inside of the collar 6 and is accordingly also closed.
  • the lifting gear can be designed so that the depression of the button 10 is only possible in some positions, for example in the area in which one metered with the help of the transverse groove 17, continuous steam generation takes place.
  • the transverse groove 17 and the longitudinal groove 15 are by moving valve pin 9 from the connection area as shown in Figure d the opening 18 moved out and are therefore closed. This has the advantage that the discharge quantity when pressing the button 10 is independent of the respective position of the valve pin 9. Deviating from this, however, there is also the possibility of the transverse groove 17 and the connected end of the longitudinal groove 15 so high in the upper region of the collar 6 to arrange that even after depressing the button 10 the flow path over it open remains.
  • the upper section intended for self-cleaning of the iron 20 of the longitudinal groove 16 can only in the shown in Figure e Position of the actuating button 10 brought into effect will. In this position, in which the valve is initially closed the button 10 can be so deep in the bore 11th push in that the lower end of the upper portion 20 of the Longitudinal groove 16 emerges from the valve opening 7 and thereby a comparatively large amount of water in the evaporation chamber 2 can occur. Due to the correspondingly strong steam development become solid particles through the steam outlet holes of the soleplate washed out.
  • the button 10 is depressed against the force the compression spring 13, which is compressed. During the The button must therefore be held down for the duration of the actuation will. After release, the compression spring 13 moves the button 10 and the valve pin 9 back to its starting position.
  • valve pin 9 In order to determine the longitudinal grooves 15, 16 and the calcification To be able to clean the transverse groove 17 is the valve pin 9 with his Actuation button 10 and the compression spring 13 in the figure f position shown from the water tank 1 of the steam iron removable.
  • the wall 12 faces in the area of the contact surface for the nose 14 a recess 37 through which the nose 14 can pass through.
  • FIG. 4 shows a second exemplary embodiment of a water inlet device shown at avoid repetitions same item numbers for correspondingly identical components were used. For the sake of simplicity, this one Embodiment only on the differences from the Received water inlet device according to Figures 1 to 3.
  • the valve pin 9 consists of one over its entire Length pipe, on which at its lower end the Longitudinal and transverse groove already mentioned for FIGS. 1 to 3 and 5 15, 17 are formed.
  • the valve pin 9 points to the formation a tube has a longitudinal bore 22 in which a valve rod 23 is formed, which is an extension at its lower end 33, on which a valve surface 26 is formed.
  • the valve surface 26 is in the longitudinal bore 22 on one Stage trained valve seat 25 can be brought into contact if that second valve 27 thus formed assumes its closed position.
  • the second valve 27 is in Fig. 4 to the left of the center line 38 in its open and right of centerline 38 in its closed Position is shown.
  • Fig. 4 it can also be seen that the water inlet device presented in one of several possible open positions is because the transverse groove 17 is in the opening 18 and at the same time the longitudinal groove 15 connects from the inside of the Water tank 1 to the one formed below the valve element 5 Evaporation chamber 2 produces.
  • the transverse and longitudinal groove 17, 15 are formed on a section 39 of larger diameter, to which there is a section above a ring step 40 41 of smaller diameter connects. Smaller at section 41 A diameter 24 is provided, which is approximately from the ring step 40 up to a further ring step 42 larger diameter runs.
  • At the ring stage 42 follows upwards an annular groove 43 in which an O-ring 28 is inserted is.
  • the O-ring 28 serves as a seal against one in Water tank 1 trained bore to prevent leakage To prevent water from the water tank 1.
  • the hole is in not shown in the drawing, but points in the area of the nose 14 a recess, the bore for better guidance the valve pin 9 is used.
  • valve pin 9 penetrates the wall 12 and ends with a pot-shaped extension 37 that is open at the top and from a cap 31 by means of between the cap 31 and the extension 37 trained locking connection 32 closed is.
  • the extension 37 forms a ring step 44 which supports the compression spring 13 on the one hand.
  • this compression spring 13 is supported on the wall 12.
  • the compression spring 13 concentrically surrounds the valve pin 9 and is by this led to the side.
  • the compression spring 13 serves that the valve pin 9 with its projection or nose 14 always free of play abuts the wall 12 fixed to the housing.
  • a push button 30 is formed, which is in the cap 31 trained bore 36 protrudes outwards.
  • the push button 30 has a radially widening collar 35 which in non-actuated state of the push button 30 as a stop on the Inner wall of the cap 31 is used.
  • the valve rod 23 free of play, which by the action of Force the spring 29, the push button 30 always in the right of the Center line 38 shown resiliently holds on to the system.
  • the spring 29 is supported in the longitudinal bore 22 on a step 47 , whereas the other end of the spring is on one of the Valve rod 23 attached circlip 34, which acts as a stop serves, supports.
  • the mode of operation of the water inlet device according to FIG. 4 is the following:
  • a permanent and constant release of steam on the soleplate trained steam outlet holes can be achieved by rotating the cap 31 and thus of the valve pin 9 this without axial displacement in its Longitudinal direction are rotated until the transverse groove 17 in the Opening 18 protrudes or engages, causing water over the Transverse groove 17 to the longitudinal groove 15 and from there into the steam chamber 2 drips. Since the transverse groove 17 in the direction of the longitudinal groove 15 5, as clearly shown in FIG. 5, can be expanded by further Twisting the valve pin 9 of the surface portion of the transverse groove 17, which protrudes into the opening 18, are enlarged so that this also increases the passage cross section of the drip valve becomes.
  • valve pin 9 is rotated until the nose 14 an opening formed on the wall 12 (not shown) reached, through which the valve pin 9 is then lifted upwards can be.
  • the bevel 51 serves for better insertion of the valve pin 9 into the valve opening 7 of the elastomer Valve element 5.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Lift Valve (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

A water feed unit for steam irons has a first valve (52), which is located between a water container (1) and an evaporation chamber (2). The valve (52) consists of a valve component (5) with a valve opening (7), and a valve rod (9) sealed in the valve opening (7). The rod has an oblong groove (15) and moves by means of rotating motion from the closing position into the open position and vice versa. The valve component (5) has a collar (6) which surrounds the rod (9) and has a radial opening (18). In the closed position, one end of the oblong groove (15) is located inside the collar (6) while in the open position, the groove end is connected to the collar opening (18).

Description

Die Erfindung betrifft eine Wassereinleitvorrichtung für Dampfbügeleisen mit einem zwischen einem Wasserbehälter und einer Verdampfungskammer angeordneten Ventil bestehend aus einem Ventilelement mit einer Ventilöffnung und einem in der Ventilöffnung abgedichteten Ventilstift mit einer Längsrille, der in einer ersten Stellung die Ventilöffnung verschließt und in eine zweite Stellung bewegbar ist, in der die beiden Enden der Längsrille beiderseits der Ventilöffnung offen sind.The invention relates to a water inlet device for steam irons with one between a water tank and an evaporation chamber arranged valve consisting of a valve element with one valve opening and one in the valve opening sealed valve pin with a longitudinal groove, which in a first position closes the valve opening and in a second Position is movable in the two ends of the longitudinal groove are open on both sides of the valve opening.

Eine Wassereinleitvorrichtung für Dampfbügeleisen der eingangs genannten Art ist aus der EP-B-0 014 643 bekannt. Bei dieser bekannten Vorrichtung besteht das Ventilelement des ersten Ventils aus einem ringförmigen Teil aus Elastomermaterial, das auf seiner Innenwandung eine im wesentlichen radiale, flexible Lippe aufweist, welche die Ventilöffnung begrenzt. Der Ventilstift ist gegenüber dem Ventilelement nur axial bewegbar, wobei drei unterschiedliche Stellungen vorgesehen sind, in denen der Ventilstift mit Hilfe eines Rastgesperres arretierbar ist.A water inlet for steam irons at the beginning mentioned type is known from EP-B-0 014 643. In this known The device consists of the valve element of the first valve from a ring-shaped part made of elastomer material, which on its Inner wall has an essentially radial, flexible lip, which limits the valve opening. The valve pin is only axially movable with respect to the valve element, three different ones Positions are provided in which the valve pin can be locked with the aid of a locking mechanism.

In einer Endstellung befinden sich die beiden Enden der Längsrille auf derselben Seite der Ventilöffnung, wobei der Ventilstift die Ventilöffnung verschließt. In einer mittleren Stellung und in einer zweiten Endstellung befinden sich die beiden Enden der Längsrille auf beiden Seiten der Ventilöffnung, wobei der innerhalb der Lippe befindliche Querschnitt der Längsrille die in die Verdampfungskammer eingeleitete Wassermenge definiert. Dieser Querschnitt ist aufgrund einer entsprechenden Ausbildung der Längsrille in den beiden Stellungen, der mittleren und der zweiten Endstellung, unterschiedlich groß, so daß je nach ausgewählter Stellung eine stärkere oder eine schwächere Dampferzeugung gewählt werden kann. Eine Möglichkeit zur Erzeugung eines Dampfstoßes ist nicht vorgesehen.The two ends of the longitudinal groove are in an end position on the same side of the valve opening, with the valve pin closes the valve opening. In a middle position and the two ends are in a second end position the longitudinal groove on both sides of the valve opening, the cross section of the longitudinal groove located within the lip which in the amount of water introduced into the evaporation chamber is defined. This Cross section is due to appropriate training Longitudinal groove in the two positions, the middle and the second End position, of different sizes, so that depending on the selected Position a stronger or a weaker steam generation can be chosen. One way to generate a burst of steam is not scheduled.

Aus der FR-B-2 337 780 ist weiterhin eine Wassereinleitvorrichtung für Dampfbügeleisen bekannt, bei der durch Drehen des Ventilstiftes das erste Ventil dadurch geöffnet wird, daß entsprechend seiner Öffnungsstellung eine oder mehrere am Ventilstift ausgebildete Bohrungen in eine am Ventilelement ausgebildete radiale Öffnung eingreifen, so daß Wasser dosiert aus dem Wasserbehälter über die Bohrungen in eine an dem Ventilstift angeordnete Längsbohrung gelangen, von wo dieses in die Verdampfungskammer einfließt. Die am Ventilstift ausgebildeten Bohrungen können bei Verunreinigungen aufgrund ihrer verhältnismäßig kleinen Durchmesser - denn sehr viel größere Bohrungen sind aufgrund der Dicke des Ventilstiftes kaum möglich - leicht zu Verstopfungen führen. Eine stufenlose Durchflußregelung am ersten Ventil ist kaum möglich.FR-B-2 337 780 is also a water inlet device known for steam irons, by turning the valve pin the first valve is opened accordingly its open position one or more on the valve pin trained holes in a formed on the valve element engage radial opening so that water doses from the Water container through the holes in an arranged on the valve pin Longitudinal bore from where this goes into the evaporation chamber flows in. The holes formed on the valve pin can with impurities due to their relatively small Diameter - because much larger holes are due the thickness of the valve pin hardly possible - easy to clog to lead. Continuous flow control on the first valve is hardly possible.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Wassereinleitvorrichtung für Dampfbügeleisen zu schaffen, die einfach aufgebaut und kostengünstig herzustellen ist, die sich mit einer stufenlosen Regulierung der erzeugten Dampfmenge versehen läßt, die leicht regel- und reinigbar ist und die weniger durch Verengungen verstopft.The invention is therefore based on the object of a water inlet device to create for steam irons that are simply constructed and is inexpensive to manufacture, dealing with a provides continuous regulation of the amount of steam generated, which is easy to regulate and clean, and which is less difficult due to constrictions clogged.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Die erfindungsgemäße Wassereinleitvorrichtung läßt sich auf einfache Weise durch Drehen des Ventilstifts öffnen und schließen, wobei der Ventilstift in der jeweiligen Stellung reibschlüssig gehalten wird, so daß zusätzliche Einrichtungen wie das beim Stand der Technik erforderliche Rastgesperre zur Arretierung des Ventilstifts in der jeweiligen Stellung entbehrlich sind. Eine stufenlose Regulierung der in die Verdampfungskammer in der Zeiteinheit eingeleiteten Wassermenge und der entsprechend erzeugten Dampfmenge kann mit dem erfindungsgemäßen ersten Ventil auf einfache Weise erreicht werden. Durch das Zusammenwirken der Querrille im Ventilstift mit der Öffnung im Ventilelement wird eine Blende geschaffen, deren Durchlaßquerschnitt durch Drehen des Ventilstifts veränderbar ist. Mit Hilfe dieser Blende kann die erzeugte Dampfmenge den unterschiedlichen Bedürfnissen beim Bügeln auf einfache Weise angepaßt werden. Der Verstellbereich der Blende wird durch die Länge der Querrille bestimmt.This object is achieved by the features of the claim 1 solved. The water inlet device according to the invention can be opened easily by turning the valve pin and close, with the valve pin in the respective position is held frictionally, so that additional facilities such as the locking mechanism required in the prior art for locking of the valve pin in the respective position can be dispensed with are. Stepless regulation of the evaporation chamber the amount of water introduced in the unit of time and the corresponding amount amount of steam generated can be with the first valve according to the invention can be easily achieved. By the interaction of the Cross groove in the valve pin with the opening in the valve element created an aperture, the passage cross section by turning the valve pin is changeable. With the help of this aperture the amount of steam generated to meet the different needs Ironing can be easily adjusted. The adjustment range the aperture is determined by the length of the transverse groove.

Durch den sich in Öffnungsrichtung des ersten Ventils stetig erweiterten bzw. vergrößerten Querschnitts der Querrille nach den Merkmalen des Anspruchs 2 wird eine besonders gute Dosierbarkeit des Wassers am ersten Ventil erreicht.Due to the steadily expanding in the opening direction of the first valve or enlarged cross-section of the transverse groove according to the Features of claim 2 will be a particularly good meterability of water at the first valve.

Um einen vorteilhaft großen Verstellbereich zu erzielen, ist es zweckmäßig, wenn sich die Querrille nach den Merkmalen des Anspruchs 3 über einen Umfangswinkel von bis zu 180° erstreckt.In order to achieve an advantageously large adjustment range, it is useful if the cross groove according to the features of the claim 3 extends over a circumferential angle of up to 180 °.

Nach den Merkmalen des Patentanspruchs 4 eignet sich die dritte Stellung vor allem zur vorübergehenden Steigerung der Dampferzeugung, ohne daß es hierzu einer Veränderung der Dampfmengeneinstellung durch Drehen des Ventilstifts bedarf. Vor allem kann mit Hilfe dieser dritten Stellung ein sogenannter Dampfstoß bewirkt werden, bei dem die vorübergehend erzeugte Dampfmenge die größtmögliche, im Dauerbetrieb erzeugbare Dampfmenge übersteigt. According to the features of claim 4, the third is suitable Position above all for the temporary increase in steam generation, without this changing the amount of steam by turning the valve pin. Above all, with With the help of this third position a so-called burst of steam causes where the amount of steam temporarily generated is the greatest possible amount of steam that can be generated in continuous operation exceeds.

Zur Bildung des zusätzlichen Durchlasses in der dritten Stellung sind erfindungsgemäß die Merkmale des Patentanspruchs 5 vorgesehen. Die Ausbildung der zweiten Längsrille ermöglicht einen einfachen Ventilaufbau und eine von den übrigen Ventilfunktionen unabhängige Bemessung des Durchlaßquerschnitts in der dritten Stellung des Ventilstifts. Diese Ausgestaltung hat weiterhin den Vorteil, daß die dritte Stellung mit erhöhter Dampferzeugung aus jeder vorher eingestellten Position des Ventilstifts, also sowohl aus der ersten als auch aus der zweiten Stellung erreichbar ist. Daneben kann der Ventilstift ohne Nachteil für die Wirkungsweise des ersten Ventils zusätzlich in axialer Richtung bewegbar sein, um hierdurch beispielsweise durch das zweite Ventil eine Dampfstoßerzeugung zu ermöglichen. Die durch Drehen des Ventilstifts auswählbaren Ventilstellungen werden hierdurch nicht gestört. Das Betätigen der zusätzlichen Ventilfunktion kann daher von verschiedenen Stellungen des Ventilstifts ausgehen.To form the additional passage in the third position the features of claim 5 are provided according to the invention. The formation of the second longitudinal groove enables a simple one Valve structure and one of the other valve functions independent dimensioning of the passage cross section in the third Position of the valve pin. This configuration continues Advantage that the third position with increased steam generation every previously set position of the valve pin, i.e. both can be reached from the first as well as from the second position. In addition, the valve pin can work without disadvantage the first valve can also be moved in the axial direction, to thereby generate a burst of steam, for example, through the second valve to enable. By turning the valve pin selectable valve positions are not disturbed by this. The Actuation of the additional valve function can therefore be different Extend the positions of the valve pin.

Nach den Merkmalen des Patentanspruchs 6 ist der wirksame Durchtrittsquerschnitt in der vierten Stellung so groß bemessen, daß die in die Verdampfungskammmer eingeleitete Wassermenge eine selbsttätige Reinigung des Düsensystems bewirkt. Die erhöhte Wasserzufuhr kann in der vierten Stellung des Ventilstifts auf einfache Weise dadurch erreicht werden, daß die zweite Längsrille einen Abschnitt größeren Querschnitts hat, dessen beide Enden nur in der vierten Stellung beiderseits außerhalb der Ventilöffnung liegen (Anspruch 7).According to the features of claim 6 is the effective passage cross section in the fourth position so large that the amount of water introduced into the evaporation chamber automatic cleaning of the nozzle system. The increased Water supply can be in the fourth position of the valve pin can be easily achieved in that the second longitudinal groove has a section of larger cross section, the two ends only in the fourth position on both sides outside the valve opening lie (claim 7).

Durch die Weiterbildung nach den Merkmalen des Patentanspruchs 8 wird eine selbsttätige Rückstellung des Ventilstifts aus der dritten und vierten Stellung erreicht. By training according to the features of claim 8 will automatically reset the valve pin from the third and fourth position reached.

Eine besonders einfache Anordnung ergibt sich für die Feder nach den Merkmalen des Anspruchs 9. Durch die Druckfeder wird einerseits das erste Ventil beim Lösevorgang stets in seine Schließstellung gebracht und gehalten und andererseits wird die Druckfeder selbst einfach am Ventilstift geführt.A particularly simple arrangement results for the spring the features of claim 9. The compression spring is on the one hand the first valve is always in its closed position during the loosening process brought and held and on the other hand the compression spring itself simply guided on the valve pin.

Nach den Merkmalen des Patentanspruchs 10 kann die dritte und/oder vierte Stellung des Ventilstiftes nur durch besondere Handgriffe bzw. Maßnahmen erreicht werden, das heißt, bei normaler Drehbewegung des Betätigungsknopfes kann die dritte und/oder vierte Stellung des Ventils nicht erreicht werden. Letztere Positionen sind beispielsweise nur dadurch möglich, daß das Ventil in einer bestimmt vorgegebenen Position zusätzlich noch axial verschoben werden muß, um aus der normalen Dosierstellung (normaler Dampfbetrieb) entweder in die dritte oder vierte Stellung zu gelangen. Derartige Entriegelungsmittel können aber auch durch andere Löse- oder Sperreinrichtungen gebildet werden.According to the features of claim 10, the third and / or fourth position of the valve pin only by special Handles or measures are achieved, that is, with normal Rotary movement of the operating button can be the third and / or fourth position of the valve cannot be reached. The latter positions are only possible, for example, in that the valve additionally in a predetermined position still has to be axially shifted from the normal dosing position (normal steam mode) either in the third or fourth position. Such unlocking means can but also formed by other release or locking devices will.

Unter der dritten Stellung des Ventils soll beispielsweise diejenige gemeint sein, die sich bei ganz herunter gedrücktem Ventilstift ergibt. Die vierte Stellung soll dann diejenige sein, die sich ergibt, wenn der Ventilstift zwecks Reinigung ganz nach oben aus dem Ventilelement herausgezogen wurde. Bei letzterem sind dabei die Merkmale des Patentanspruchs 11 von Vorteil, da dabei die Entriegelungsmittel von einer Aussparung gebildet werden, durch die nur in einer bestimmten Position des Ventilstiftes dieser mit seinem Vorsprung nach oben aus der Wand des Bügeleisens herausgezogen werden kann, was sich aus den Merkmalen des Patentanspruchs 12 ergibt. For example, under the third position of the valve to be meant when the valve pin is pressed all the way down results. The fourth position should then be the one which results when the valve pin is completely removed for cleaning was pulled out of the valve element at the top. With the latter the features of claim 11 are advantageous because the unlocking means are formed by a recess, by only in a certain position of the valve pin this with its projection upwards from the wall of the iron what can be extracted from the characteristics of the Claim 12 results.

In einem zweiten Ausführungsbeispiel nach den Merkmalen des Patentanspruchs 13 wird das schwallartige Einfließen von Wasser in die Dampfkammer dadurch gelöst, daß der Ventilstift von einer Hülse gebildet wird, in dem ein zweites Ventil angeordnet ist. Der Ventilstift übt also mit dem Ventilelement die normale Tropffunktion, während das zweite Ventil anstelle der gesonderten Längsrille im ersten Ausführungsbeispiel den schwallartigen oder beschleunigten Zufluß steuert.In a second embodiment according to the features of the claim 13 the gushing inflow of water into solved the steam chamber in that the valve pin of a Sleeve is formed in which a second valve is arranged. The valve pin thus exercises the normal drip function with the valve element, while the second valve instead of the separate one Longitudinal groove in the first embodiment, the gushy or accelerated inflow controls.

Eine besonders einfache Herstellung und Montage wird durch die Merkmale des Patentanspruchs 14 erreicht. Dabei wird die Ventilstange von der Seite in den Ventilstift eingeführt, an der die Längs- und Querrille ausgebildet sind.A particularly simple manufacture and assembly is by the Features of claim 14 achieved. The valve rod inserted into the valve pin from the side where the Longitudinal and transverse grooves are formed.

Gemäß den Merkmalen des Patentanspruchs 15 sorgt eine Feder dafür, daß das zweite Ventil stets in seine Fließstellung gehalten wird.According to the features of claim 15, a spring ensures that the second valve is always kept in its flow position becomes.

Um die Ventilstange unabhängig von dem Ventilstift betätigen zu können, sind nach einer Weiterbildung der Erfindung die Merkmale des Patentanspruchs 16 vorgesehen. Dabei verläuft der Betätigungsknopf konzentrisch zum Druckknopf und bei Betätigung des Druckknopfes dringt dieser in den im Betätigungsknopf vorhandenen Raum ein. Durch diese Anordnung wird ein besonders leichter Zugriff und eine leichte Handhabung ermöglicht, ohne daß ein gesonderter Raum für den Druckknopf vorgesehen werden muß.To operate the valve stem independently of the valve pin can, according to a development of the invention, the features of claim 16 provided. The operating button runs concentric to the push button and when pressing the This push button pushes into the existing in the actuation button Space. This arrangement makes access particularly easy and allows easy handling without a separate Space for the push button must be provided.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert, das in der Zeichnung dargestellt ist. Es zeigen

Fig. 1
einen Teilquerschnitt durch den Wasserbehälter und die Verdampfungskammer eines Dampfbügeleisens mit dem erfindungsgemäßen Dampfsteuerventil nach einem ersten Ausführungsbeispiel,
Fig. 2
einen Querschnitt durch das Ventil der Wassereinleitvorrichtung gemäß Figur 1,
Fig. 3
eine Darstellung der unterschiedlichen Ventilstellungen a bis f der Wassereinleitvorrichtung gemäß Figur 1,
Fig. 4
ein zweites Ausführungsbeispiel eines Dampfsteuerventils nach der Erfindung und
Fig. 5
Seitenansicht auf den Ventilstift im Bereich der Quer- und Längsrille, gemäß der Pfeilrichtung X nach Fig. 4.
The invention is explained in more detail below using an exemplary embodiment which is illustrated in the drawing. Show it
Fig. 1
2 shows a partial cross section through the water tank and the evaporation chamber of a steam iron with the steam control valve according to the invention according to a first exemplary embodiment,
Fig. 2
2 shows a cross section through the valve of the water inlet device according to FIG. 1,
Fig. 3
2 shows a representation of the different valve positions a to f of the water inlet device according to FIG. 1,
Fig. 4
a second embodiment of a steam control valve according to the invention and
Fig. 5
Side view of the valve pin in the area of the transverse and longitudinal groove, according to the direction of arrow X in FIG. 4.

Figur 1 und 4 zeigt einen Ausschnitt eines Wasserbehälters 1 und einer darunter liegenden Verdampfungskammer 2 eines Dampfbügeleisens. Der Wasserbehälter 1 und die Verdampfungskammer 2 sind durch eine Wand 3 voneinander getrennt. In der Wand 3 befindet sich eine Öffnung 4, in der ein Ventilelement 5 befestigt und abgedichtet ist. Das Ventilelement 5 besteht aus elastomerem Material und hat die Form einer ringförmigen Scheibe mit einer durch einen zylindrischen Kragen 6 begrenzten, mittigen Ventilöffnung 7 und einem dem Scheibenrand benachbarten Ringbund 8, der in die Öffnung 4 eingreift. In der Ventilöffnung 7 ist das untere Ende eines zylindrischen Ventilstifts 9 angeordnet, der von dem Kragen 6 dicht umspannt wird. Figures 1 and 4 shows a section of a water container 1 and an underlying vaporization chamber 2 of a steam iron. The water tank 1 and the evaporation chamber 2 are separated from each other by a wall 3. Located in wall 3 there is an opening 4 in which a valve element 5 is attached and is sealed. The valve element 5 consists of elastomeric material and has the shape of an annular disc with a by a cylindrical collar 6 limited central valve opening 7 and a ring collar 8 adjacent to the disc edge engages in the opening 4. In the valve opening 7 is the lower one End of a cylindrical valve pin 9 arranged by the Collar 6 is tightly covered.

Der Ventilstift 9, der in Fig. 1 bis 3 von einem massiven Stab gebildet wird, erstreckt sich nach Fig. 1 durch den Wasserbehälter 1 und trägt an seinem oberen, aus dem Wasserbehälter 1 herausragenden Ende einen zylindrischen Betätigungsknopf 10 größeren Durchmessers. Der Ventilstift 9 und der Knopf 10 bilden ein einstückiges Bauteil, das aus einem temperaturbeständigen Kunststoff hergestellt ist. Das obere Ende des Ventilstifts 9 ist in einer gestuften Bohrung 11 in der Wand 12 des Wasserbehälters 1 drehbar gelagert.The valve pin 9, which is in Fig. 1 to 3 of a solid rod is formed, extends through the water tank according to FIG. 1 1 and carries on its upper, protruding from the water tank 1 End a cylindrical button 10 larger Diameter. The valve pin 9 and the button 10 form one piece Component made of a temperature-resistant plastic is made. The upper end of the valve pin 9 is in one stepped bore 11 in the wall 12 of the water tank 1 rotatable stored.

Zwischen der Wand 12 und dem Knopf 10 befindet sich nach Fig. 1 eine Druckfeder 13, die leicht vorgespannt ist und die den Ventilstift 9 in der in Figur 1 dargestellten Axialposition hält, die durch eine an dem Ventilstift 9 ausgebildete, radial vorspringende Nase 14 bestimmt wird, die auf der Innenseite des Wasserbehälters 1 an der Wand 12 anliegt.According to FIG. 1, there is between the wall 12 and the button 10 a compression spring 13 which is slightly biased and which the valve pin 9 holds in the axial position shown in FIG. 1, which is formed by a radially projecting on the valve pin 9 Nose 14 is determined on the inside of the Water tank 1 abuts the wall 12.

Zur Bildung steuerbarer Ventildurchlässe weist der Ventilstift 9 nach den Figuren 1 bis 3 an seinem unteren Ende zwei im Abstand voneinander angeordnete Längsrillen 15, 16 und eine Querrille 17 auf. Die Längsrille 15 erstreckt sich vom unteren Ende des Ventilstifts 9 bis zu einem Ende der Querrille 17 und hat in Längsrichtung gesehen einen konstanten Querschnitt. Die Querrille 17 mündet in die Längsrille 15 und erstreckt sich in Umfangsrichtung über einen Umfangswinkel von etwa 160°, wobei ihr Querschnitt mit zunehmendem Abstand von der Längsrille 15 abnimmt, wie dies Fig. 5 zeigt.To form controllable valve passages, the valve pin 9 according to Figures 1 to 3 at its lower end two at a distance longitudinal grooves 15, 16 arranged from one another and a transverse groove 17 on. The longitudinal groove 15 extends from the lower end of the valve pin 9 to one end of the transverse groove 17 and has in the longitudinal direction seen a constant cross section. The transverse groove 17 opens into the longitudinal groove 15 and extends in the circumferential direction over a circumferential angle of about 160 °, their cross section with increasing distance from the longitudinal groove 15 decreases, as shown in FIG. 5 shows.

Die Querrille 17 befindet sich in der in Figur 1 dargestellten Position des Ventilsstifts 9 in einem Bereich des Kragens 6, der eine durch einen radialen Schlitz gebildete Öffnung 18, durch die die Querrille 17 an den Innenraum des Wasserbehälters 1 anschließbar ist. Die Breite der Öffnung 18 ist gleich oder geringfügig größer als die Breite der Längsrille 15. Die Längsrille 16 befindet sich auf der der Querrille 17 entgegengesetzten Seite des Ventilstifts 9, ungefähr in der Mitte zwischen der Längsrille 15 und dem Ende der Querrille 17.The transverse groove 17 is located in that shown in Figure 1 Position of the valve pin 9 in an area of the collar 6, the an opening 18 formed by a radial slot through which the transverse groove 17 can be connected to the interior of the water tank 1 is. The width of the opening 18 is the same or slightly larger than the width of the longitudinal groove 15. The longitudinal groove 16 is located on the side opposite the transverse groove 17 the valve pin 9, approximately in the middle between the longitudinal groove 15 and the end of the transverse groove 17.

Das obere Ende der Längsrille 16 liegt nach Fig. 1 außerhalb der Ventilöffnung 7 in einem solchen Abstand vom Kragen 6, daß in allen Stellungen des Ventilstifts 9 die Längsrille 16 mit ihrem maximalen Durchtrittsquerschnitt an den Innenraum des Wasserbehälters 1 angeschlossen bleibt. Das untere Ende der Längsrille 16 ist in einem Abstand vom Ende der zylindrischen Mantelfläche des Ventilstifts 9 angeordnet und liegt in der in Figur 1 dargestellten Stellung des Ventilstifts 9 innerhalb der Ventilöffnung 7. In dieser Stellung des Ventilstifts 9 ist daher die Längsrille 16 zur Verdampfungskammer 2 hin verschlossen. Die Längsrille 16 besteht aus einem unteren Abschnitt 19 und einem oberen Abschnitt 20, die durch einen kurzen gestuften Übergang 21 verbunden sind. Der Abschnitt 19 hat eine geringere Breite und eine geringere Tiefe als der Abschnitt 20. Sein Querschnitt ist jedoch größer als der Querschnitt der Längsrille 15. Der Querschnitt des Abschnitts 20 ist etwa doppelt so groß wie der Querschnitt des Abschnitts 19.The upper end of the longitudinal groove 16 is outside of FIG. 1 Valve opening 7 at such a distance from the collar 6 that in all positions of the valve pin 9, the longitudinal groove 16 with their maximum passage cross-section to the interior of the water tank 1 remains connected. The lower end of the longitudinal groove 16 is at a distance from the end of the cylindrical surface of the Valve pin 9 is arranged and is in that shown in Figure 1 Position of the valve pin 9 within the valve opening 7. In this position of the valve pin 9 is therefore the longitudinal groove 16 closed to the evaporation chamber 2. The longitudinal groove 16 is made from a lower section 19 and an upper section 20, which are connected by a short stepped transition 21. The section 19 has a smaller width and a smaller one Depth than section 20. However, its cross section is larger than the cross section of the longitudinal groove 15. The cross section of the section 20 is about twice the cross section of the section 19th

Nachfolgend werden anhand von Figur 3 die unterschiedlichen Einstellmöglichkeiten näher erläutert, die mit der beschriebenen Wassereinleitvorrichtung erreichbar sind. Die einzelnen Abbildungen a bis f von Figur 3 zeigen jeweils das Ventilelement 5 und den Ventilstift 9 mit seinem Betätigungsknopf 10 in den verschiedenen Stellungen, die möglich sind. Eine Draufsicht auf den mit einer Markierung versehenen Knopf 10 veranschaulicht die jeweilige Winkelstellung des Ventilstifts 9.The different setting options are described below with reference to FIG explained in more detail with the described Water inlet device can be reached. The individual pictures a to f of Figure 3 each show the valve element 5 and the valve pin 9 with its actuating button 10 in the different Positions that are possible. A top view of the with A marked button 10 illustrates the respective Angular position of the valve pin 9.

In Abbildung a befindet sich der Ventilstift in seiner Schließstellung. Diese Stellung wird erreicht, wenn in der Darstellung gemäß Figur 2 der Ventilstift 9 um ca. 100° entgegen dem Uhrzeigersinn gedreht wird. Die Querrille 17 ist in dieser Stellung von der Öffnung 18 getrennt und durch den Kragen 6 verschlossen. Die Öffnung 18 ist durch die Mantelfläche des Ventilstifts 9 verschlossen. Das untere Ende der Längsrille 16 befindet sich Innerhalb des Kragens 6 und ist dementsprechend ebenfalls geschlossen.In Figure a, the valve pin is in its closed position. This position is reached when in the illustration 2, the valve pin 9 counterclockwise by approximately 100 ° is rotated. The transverse groove 17 is in this position the opening 18 separated and closed by the collar 6. The Opening 18 is closed by the outer surface of the valve pin 9. The lower end of the longitudinal groove 16 is inside of the collar 6 and is accordingly also closed.

Ausgehend von der In Abbildung a gezeigten Schließstellung wird das Ventil durch Drehen des Betätigungsknopfes 10 im Uhrzeigersinn geöffnet. Hierbei gelangt die Querrille 17 in Überdeckung mit der Öffnung 18, wodurch Wasser aus dem Wasserbehälter 1 über die Querrille 17 und die Längsrille 15 in die Verdampfungskammer 2 fließen kann. Eine solche Öffnungsstellung ist in Abbildung b und in Figur 2 gezeigt. In dieser Stellung wird die Durchflußmenge durch den jeweils an die Öffnung 18 angeschlossenen Querschnitt der Querrille 17 bestimmt. Soll die Durchflußmenge erhöht werden, so wird der Betätigungsknopf 10 im Uhrzeigersinn, soll sie erniedrigt werden, entgegen dem Uhrzeigersinn gedreht.Starting from the closed position shown in Figure a the valve by turning the operating button 10 clockwise open. Here, the transverse groove 17 overlaps with the opening 18, whereby water from the water tank 1 over the transverse groove 17 and the longitudinal groove 15 into the evaporation chamber 2 can flow. Such an open position is shown in Figure b and shown in Figure 2. In this position the flow rate through the cross section connected to the opening 18 the transverse groove 17 determines. Should increase the flow rate are, the operating button 10 is clockwise, should they are humiliated, rotated counterclockwise.

Die für kontinuierliche Dampferzeugung vorgesehene, maximale Durchflußmenge und damit maximale Dampferzeugung ist erreicht, wenn sich das mit der Längsrille 15 verbundene Ende der Querrille 17 unmittelbar vor der Öffnung 18 befindet und dementsprechend der volle Durchflußquerschnitt der Längsrille 15 dem Wasser für den Ausfluß in die Verdampfungskammer 2 zur Verfügung steht. Diese Stellung ist in Abbildung c wiedergegeben. The maximum intended for continuous steam generation Flow rate and thus maximum steam generation is reached, if the end of the transverse groove connected to the longitudinal groove 15 17 is located immediately in front of the opening 18 and accordingly the full flow cross section of the longitudinal groove 15 the water for the outflow into the evaporation chamber 2 is available. This position is shown in Figure c.

Soll die erzeugte Dampfmenge über das durch die Längsrille 15 begrenzte Maß hinaus erhöht werden, so ist dies, wie in Abbildung d gezeigt, durch Niederdrücken des Betätigungsknopfes 10 möglich. Hierbei wird der Ventilstift 9 axial verschoben, wobei der untere Abschnitt 19 der Längsrille 16 aus der Ventilöffnung 7 heraustritt und dadurch den Wasserbehälter 1 mit der Verdampfungskammer 2 verbindet. Der im Vergleich zur Längsrille 15 und zur Querrille 17 größere Querschnitt des Abschnitts 19 läßt eine entsprechend größere Wassermenge in der Zeiteinheit austreten, so daß eine stärkere Dampfentwicklung in der Art eines Dampfstoßes bewirkt wird.Should the amount of steam generated over the limited by the longitudinal groove 15 To be increased to an extent, this is as shown in Figure d shown, possible by depressing the operating button 10. Here, the valve pin 9 is axially displaced, the lower one Section 19 of the longitudinal groove 16 emerges from the valve opening 7 and thereby the water tank 1 with the evaporation chamber 2 connects. The compared to the longitudinal groove 15 and the transverse groove 17 larger cross section of section 19 leaves a corresponding larger amount of water leak in the time unit, so that a causes stronger steam development in the manner of a burst of steam becomes.

Um zu gewährleisten, daß der Ventilstift 9 beim Niederdrücken des Betätigungsknopfes 10 die geeignete Axialposition erreicht und nicht zu weit nach unten bewegt wird, sind an dem Betätigungsknopf 10 nicht näher dargestellte Anschlagmittel vorgesehen, die den Axialweg des Betätigungsknopfes 10 begrenzen. Die Anschlagmittel können so gestaltet sein, daß das Niederdrücken des Knopfes 10 nur in einigen Stellungen möglich ist, beispielsweise in dem Bereich, in dem eine mit Hilfe der Querrille 17 dosierte, kontinuierliche Dampferzeugung erfolgt.To ensure that the valve pin 9 when depressing the Actuating button 10 reaches the appropriate axial position and are not moved too far down on the control button 10 sling means, not shown, are provided limit the axial travel of the operating button 10. The lifting gear can be designed so that the depression of the button 10 is only possible in some positions, for example in the area in which one metered with the help of the transverse groove 17, continuous steam generation takes place.

Die Querrille 17 und die Längsrille 15 werden durch das Verschieben des Ventilstifts 9 gemäß Abbildung d aus dem Anschlußbereich der Öffnung 18 herausbewegt und sind daher geschlossen. Dies hat den Vorteil, daß die Auslaufmenge beim Niederdrücken des Knopfes 10 von der jeweiligen Stellung des Ventilstifts 9 unabhängig ist. Davon abweichend besteht jedoch auch die Möglichkeit, die Querrille 17 und das daran angeschlossene Ende der Längsrille 15 so hoch im oberen Bereich des Kragens 6 anzuordnen, daß auch nach dem Niederdrücken des Knopfes 10 der Strömungsweg hierüber offen bleibt. The transverse groove 17 and the longitudinal groove 15 are by moving valve pin 9 from the connection area as shown in Figure d the opening 18 moved out and are therefore closed. this has the advantage that the discharge quantity when pressing the button 10 is independent of the respective position of the valve pin 9. Deviating from this, however, there is also the possibility of the transverse groove 17 and the connected end of the longitudinal groove 15 so high in the upper region of the collar 6 to arrange that even after depressing the button 10 the flow path over it open remains.

Der zur Selbstreinigung des Bügeleisens vorgesehene obere Abschnitt 20 der Längsrille 16 kann nur in der in Abbildung e gezeigten Stellung des Betätigungsknopfes 10 zur Wirkung gebracht werden. In dieser Stellung, In der das Ventil zunächst geschlossen ist, läßt sich der Knopf 10 so tief in die Bohrung 11 hineindrücken, daß das untere Ende des oberen Abschnitts 20 der Längsrille 16 aus der Ventilöffnung 7 heraustritt und dadurch eine vergleichsweise große Wassermenge in die Verdampfungskammer 2 eintreten läßt. Durch die entsprechend starke Dampfentwicklung werden feste Partikel durch die Dampfaustrittslöcher der Sohlenplatte ausgewaschen.The upper section intended for self-cleaning of the iron 20 of the longitudinal groove 16 can only in the shown in Figure e Position of the actuating button 10 brought into effect will. In this position, in which the valve is initially closed the button 10 can be so deep in the bore 11th push in that the lower end of the upper portion 20 of the Longitudinal groove 16 emerges from the valve opening 7 and thereby a comparatively large amount of water in the evaporation chamber 2 can occur. Due to the correspondingly strong steam development become solid particles through the steam outlet holes of the soleplate washed out.

Das Niederdrücken des Knopfes 10 erfolgt jeweils gegen die Kraft der Druckfeder 13, die dabei zusammengedrückt wird. Während der Dauer der Betätigung muß der Knopf daher niedergedrückt gehalten werden. Nach dem Loslassen bewegt die Druckfeder 13 den Knopf 10 und den Ventilstift 9 in seine Ausgangslage zurück.The button 10 is depressed against the force the compression spring 13, which is compressed. During the The button must therefore be held down for the duration of the actuation will. After release, the compression spring 13 moves the button 10 and the valve pin 9 back to its starting position.

Um bei Auftreten von Verkalkungen die Längsrillen 15, 16 und die Querrille 17 reinigen zu können, ist der Ventilstift 9 mit seinem Betätigungsknopf 10 und der Druckfeder 13 in der in Abbildung f gezeigten Position aus dem Wasserbehälter 1 des Dampfbügeleisens herausnehmbar. Hierzu weist die Wand 12 im Bereich der Anlagefläche für die Nase 14 eine Aussparung 37 auf, durch die die Nase 14 hindurchtreten kann.In order to determine the longitudinal grooves 15, 16 and the calcification To be able to clean the transverse groove 17 is the valve pin 9 with his Actuation button 10 and the compression spring 13 in the figure f position shown from the water tank 1 of the steam iron removable. For this purpose, the wall 12 faces in the area of the contact surface for the nose 14 a recess 37 through which the nose 14 can pass through.

In Fig. 4 ist ein zweites Ausführungsbeispiel einer Wassereinleitvorrichtung dargestellt, bei der zur Vermeidung von Wiederholungen für entsprechend gleiche Bauteile gleiche Positionsnummern verwendet wurden. Der Einfachheit halber wird bei diesem Ausführungsbeispiel nur noch auf die Unterschiede gegenüber der Wassereinleitvorrichtung nach den Figuren 1 bis 3 eingegangen. 4 shows a second exemplary embodiment of a water inlet device shown at avoid repetitions same item numbers for correspondingly identical components were used. For the sake of simplicity, this one Embodiment only on the differences from the Received water inlet device according to Figures 1 to 3.

Nach Fig. 4 besteht der Ventilstift 9 aus einem über seine gesamte Länge verlaufenden Rohr, an dem an seinem unteren Ende die bereits zu den Figuren 1 bis 3 und 5 erwähnte Längs- und Querrille 15, 17 ausgebildet sind. Der Ventilstift 9 weist zur Bildung eines Rohres eine Längsbohrung 22 auf , in der eine Ventilstange 23 ausgebildet ist, die an ihrem unteren Ende eine Erweiterung 33 aufweist, an der eine Ventilfläche 26 ausgebildet ist. Die Ventilfläche 26 ist mit einer in der Längsbohrung 22 an einer Stufe ausgebildeten Ventilsitz 25 in Kontakt bringbar, wenn das so gebildete zweite Ventil 27 seine Schließstellung einnimmt. Das zweite Ventil 27 ist nach Fig. 4 links von der Mittellinie 38 in seiner offenen und rechts von der Mittellinie 38 in seiner geschlossenen Stellung dargestellt ist.4, the valve pin 9 consists of one over its entire Length pipe, on which at its lower end the Longitudinal and transverse groove already mentioned for FIGS. 1 to 3 and 5 15, 17 are formed. The valve pin 9 points to the formation a tube has a longitudinal bore 22 in which a valve rod 23 is formed, which is an extension at its lower end 33, on which a valve surface 26 is formed. The valve surface 26 is in the longitudinal bore 22 on one Stage trained valve seat 25 can be brought into contact if that second valve 27 thus formed assumes its closed position. The second valve 27 is in Fig. 4 to the left of the center line 38 in its open and right of centerline 38 in its closed Position is shown.

In Fig. 4 ist weiterhin zu erkennen, daß die Wassereinleitvorrichtung in einer von mehreren möglichen Offenstellungen dargestellt ist, da die Querrille 17 sich in der Öffnung 18 befindet und gleichzeitig die Längsrille 15 eine Verbindung vom Innern des Wasserbehälters 1 zu der unterhalb des Ventilelements 5 ausgebildeten Verdampfungskammer 2 herstellt. Die Quer- und Längsrille 17, 15 sind an einem Abschnitt 39 größeren Durchmessers ausgebildet, an den sich über eine Ringstufe 40 nach oben ein Abschnitt 41 kleineren Durchmessers anschließt. Am Abschnitt 41 kleineren Durchmessers ist ein Durchbruch 24 vorgesehen, der sich in etwa von der Ringstufe 40 bis nach oben zu einer weiteren Ringstufe 42 größeren Durchmessers verläuft. An die Ringstufe 42 schließt sich nach oben eine Ringnut 43 an, in der ein O-Ring 28 eingesetzt ist. Der O-Ring 28 dient als Abdichtung gegenüber einer im Wasserbehälter 1 ausgebildeten Bohrung, um ein Austritt von Wasser aus dem Wasserbehälter 1 zu verhindern. Die Bohrung ist in der Zeichnung nicht dargestellt, weist aber im Bereich der Nase 14 eine Aussparung auf, wobei die Bohrung zur besseren Führung des Ventilstiftes 9 dient.In Fig. 4 it can also be seen that the water inlet device presented in one of several possible open positions is because the transverse groove 17 is in the opening 18 and at the same time the longitudinal groove 15 connects from the inside of the Water tank 1 to the one formed below the valve element 5 Evaporation chamber 2 produces. The transverse and longitudinal groove 17, 15 are formed on a section 39 of larger diameter, to which there is a section above a ring step 40 41 of smaller diameter connects. Smaller at section 41 A diameter 24 is provided, which is approximately from the ring step 40 up to a further ring step 42 larger diameter runs. At the ring stage 42 follows upwards an annular groove 43 in which an O-ring 28 is inserted is. The O-ring 28 serves as a seal against one in Water tank 1 trained bore to prevent leakage To prevent water from the water tank 1. The hole is in not shown in the drawing, but points in the area of the nose 14 a recess, the bore for better guidance the valve pin 9 is used.

Nach Fig. 4 durchdringt der Ventilstift 9 die Wand 12 und endet mit einer topfförmigen Erweiterung 37, die nach oben hin offen ist und von einer Kappe 31 mittels einer zwischen der Kappe 31 und der Erweiterung 37 ausgebildeten Rastverbindung 32 verschlossen ist. Die Erweiterung 37 bildet eine Ringstufe 44, an der sich die Druckfeder 13 einerseits abstützt. Andererseits stützt sich diese Druckfeder 13 an der Wand 12 ab. Die Druckfeder 13 umgibt den Ventilstift 9 konzentrisch und wird von diesem seitlich geführt. Die Druckfeder 13 dient dazu, daß der Ventilstift 9 mit seinem Vorsprung bzw. seiner Nase 14 stets spielfrei an der gehäusefesten Wand 12 anliegt.4, the valve pin 9 penetrates the wall 12 and ends with a pot-shaped extension 37 that is open at the top and from a cap 31 by means of between the cap 31 and the extension 37 trained locking connection 32 closed is. The extension 37 forms a ring step 44 which supports the compression spring 13 on the one hand. On the other hand this compression spring 13 is supported on the wall 12. The compression spring 13 concentrically surrounds the valve pin 9 and is by this led to the side. The compression spring 13 serves that the valve pin 9 with its projection or nose 14 always free of play abuts the wall 12 fixed to the housing.

In dem von der Erweiterung 37 und der Kappe 31 gebildeten Kammer 45 ist ein Druckknopf 30 ausgebildet, der über eine in der Kappe 31 ausgebildeten Bohrung 36 nach außen ragt. Der Druckknopf 30 weist einen sich radial erweiternden Ringbund 35 auf, der im nichtbetätigten Zustand des Druckknopfes 30 als Anschlag an der Innenwandung der Kappe 31 dient. Am Boden 46 des Druckknopfes 30 liegt die Ventilstange 23 spielfrei an, die durch die Wirkung der Kraft der Feder 29 den Druckknopf 30 stets in die rechts von der Mittellinie 38 dargestellte Ausgangslage federnd auf Anlage hält. Die Feder 29 stützt sich in der Längsbohrung 22 an einer Stufe 47 ab, wobei hingegen das andere Ende der Feder sich an einem an der Ventilstange 23 befestigten Sicherungsring 34, der als Anschlag dient, abstützt. Hierdurch wird die Ventilstange 23 bei nichtbetätigtem Zustand stets in seiner rechts von der Mittellinie 38 dargestellte Ausgangsstellung, also die Schließstellung des zweiten Ventils 27, gehalten. In the chamber formed by the extension 37 and the cap 31 45, a push button 30 is formed, which is in the cap 31 trained bore 36 protrudes outwards. The push button 30 has a radially widening collar 35 which in non-actuated state of the push button 30 as a stop on the Inner wall of the cap 31 is used. At the bottom 46 of the push button 30 is the valve rod 23 free of play, which by the action of Force the spring 29, the push button 30 always in the right of the Center line 38 shown resiliently holds on to the system. The spring 29 is supported in the longitudinal bore 22 on a step 47 , whereas the other end of the spring is on one of the Valve rod 23 attached circlip 34, which acts as a stop serves, supports. As a result, the valve rod 23 when not actuated Condition always in its right from the center line 38 shown starting position, that is the closed position of the second valve 27 held.

Die Wirkungsweise der Wassereinleitvorrichtung nach Fig. 4 ist folgende:The mode of operation of the water inlet device according to FIG. 4 is the following:

In der geschlossenen Stellung der Wassereinleitvorrichtung befindet sich die Querrille 17 und somit auch die Längsrille 15 außerhalb der Öffnung 18, so daß der Kragen 6 die Quer- und Längsrille 17, 15 verschließt und somit eine Verbindung vom Wasserbehälter 1 zur Dampfkammer 2 nicht vorhanden ist, so daß kein Wasser in die Dampfkammer 2 eintropfen kann. In dieser geschlossenen Stellung kann, beispielsweise für einen schlagartigen Dampfstoß, jederzeit das zweite Ventil 27 geöffnet werden, indem der Druckknopf 23 gegen die Kraft der Feder 29 nach unten gedrückt wird, wobei die Ventilstange 23 sich mit samt der Erweiterung nach unten bewegt, wobei sich die Ventilfläche 26 vom Ventilsitz 25 abhebt. Nun kann Wasser über den Druchbruch 24 in die Längsbohrung 22 und von dort in die Verdampfungskammer 2 einströmen. Sobald der Druckknopf 30 gelöst wird, wird durch die Kraft der Feder 29 die Ventilstange 23 in ihre rechts von der Mittellinie 38 dargestellte Schließstellung zurückbewegt. Das Ventil 27 ist wiederum verschlossen und es kann kein Wasser schwallartig in die Dampfkammer 2 einströmen.Is in the closed position of the water inlet device the transverse groove 17 and thus also the longitudinal groove 15 outside the opening 18 so that the collar 6 the transverse and longitudinal groove 17, 15 closes and thus connects the water tank 1 to the steam chamber 2 is not present, so that no water in the Steam chamber 2 can drip in. In this closed position can, for example for a sudden burst of steam, at any time the second valve 27 can be opened by the push button 23 is pressed down against the force of the spring 29, the Valve rod 23 moves down together with the extension, wherein the valve surface 26 stands out from the valve seat 25. Well now Water through the breakthrough 24 into the longitudinal bore 22 and from there flow into the evaporation chamber 2. As soon as the push button 30 is solved by the force of the spring 29, the valve rod 23 into its closed position shown to the right of the center line 38 moved back. The valve 27 is in turn closed and no water can flow into the steam chamber 2 in a surge.

Um beim normalen Bügelvorgang neben dem Dampfstoßbetrieb auch eine dauerhafte und konstante Dampfabgabe an den an der Bügeleisensohle ausgebildeten Dampfaustrittslöchern (nicht dargestellt) zu erzielen, kann durch Drehen der Kappe 31 und somit des Ventilstiftes 9 dieser ohne axiale Verschiebung in seiner Längsrichtung soweit verdreht werden, bis die Querrille 17 in die Öffnung 18 hineinragt bzw. eingreift, wodurch Wasser über die Querrille 17 zur Längsrille 15 und von dort in die Dampfkammer 2 tropft. Da sich die Querrille 17 in Richtung zur Längsrille 15 hin erweitert, wie dies Fig. 5 deutlich zeigt, kann durch weiteres Verdrehen des Ventilstiftes 9 der Flächenanteil der Querrille 17, der in die Öffnung 18 hineinragt, vergrößert werden, so daß hierdurch der Durchlaßquerschnitt des Tropfventils ebenfalls vergrößert wird.In addition to steam operation during normal ironing a permanent and constant release of steam on the soleplate trained steam outlet holes (not shown) can be achieved by rotating the cap 31 and thus of the valve pin 9 this without axial displacement in its Longitudinal direction are rotated until the transverse groove 17 in the Opening 18 protrudes or engages, causing water over the Transverse groove 17 to the longitudinal groove 15 and from there into the steam chamber 2 drips. Since the transverse groove 17 in the direction of the longitudinal groove 15 5, as clearly shown in FIG. 5, can be expanded by further Twisting the valve pin 9 of the surface portion of the transverse groove 17, which protrudes into the opening 18, are enlarged so that this also increases the passage cross section of the drip valve becomes.

In Fig. 5 wird nochmals der Verlauf der Quer- und Längsrille 17, 15 in vergrößertem Maßstab dargestellt, wobei die Quer- und Längsrille 17, 15 aus einer in den Abschnitt 39 größeren Durchmessers an der Außenfläche eingebrachte Nut besteht. Die Ober- und Unterkante 48, 49 verlaufen in Umfangsrichtung U des Abschnitts 39 aufeinander zu, bis sie sich an dem Endabschnitt 50 treffen. Bei kleinster Ventilöffnung ragt also gerade der Endabschnitt 49 in die Öffnung 18 hinein. Je mehr die Querrille 17 durch Drehen des Ventilstiftes 9 in die Öffnung 18 hineingedreht wird, je größer wird der Durchlaßquerschnitt, über den Wasser von der Querrille 17 zur Längsrille 15 und von dort in die Verdampfungskammer 2 abfließen kann. Durch die Festlegung der Tiefe t der Quer- und Längsrille 17, 15 kann der Durchfluß des Wasser durch das erste Ventil 52 festgelegt werden.5 again shows the course of the transverse and longitudinal grooves 17, 15 shown on an enlarged scale, the transverse and Longitudinal groove 17, 15 from a larger diameter in section 39 there is a groove made on the outer surface. The The upper and lower edges 48, 49 extend in the circumferential direction U des Section 39 towards each other until they are at the end section 50 to meet. With the smallest valve opening, the end section protrudes 49 into the opening 18. The more the transverse groove 17 by turning the valve pin 9 into the opening 18 becomes, the larger the passage cross section, over the water of the transverse groove 17 to the longitudinal groove 15 and from there into the evaporation chamber 2 can drain. By setting the depth t of the transverse and longitudinal grooves 17, 15 can the flow of water be determined by the first valve 52.

Sollte einmal die Wassereinleitvorrichtung im Berelch der Quer- oder Längsrille 17, 15 verstpft sein, so kann durch einfaches Herausziehen des Ventilstiftes 9 mit der Ventilstange 23 die Quer- und Längsrille 17, 15 von außen einfach gereinigt werden. Dabei wird der Ventilstift 9 solange gedreht, bis die Nase 14 einen an der Wand 12 ausgebildeten Durchbruch (nicht dargestellt) erreicht, durch den dann der Ventilstift 9 nach oben herausgehoben werden kann. Beim anschließenden Einsetzen des Ventilstiftes 9 dient die Schräge 51 zum besseren Einführen des Ventilstiftes 9 in die Ventilöffnung 7 des aus Elastomer bestehenden Ventilelements 5.Should the water inlet device in the Berelch Transverse or longitudinal groove 17, 15 be plugged, so it can be done by simple Pull out the valve pin 9 with the valve rod 23 the transverse and longitudinal grooves 17, 15 can be easily cleaned from the outside. The valve pin 9 is rotated until the nose 14 an opening formed on the wall 12 (not shown) reached, through which the valve pin 9 is then lifted upwards can be. When subsequently inserting the valve pin 9, the bevel 51 serves for better insertion of the valve pin 9 into the valve opening 7 of the elastomer Valve element 5.

Claims (17)

  1. A water proportioning device for steam irons, with a first valve (52) arranged between a water reservoir (1) and a steam-generating chamber (2) and comprising a valve member (5) having a valve opening (7) and a valve pin (9) in sealing engagement within the valve opening (7) and provided with a longitudinal groove (15), said valve pin closing the valve opening (7) in a first position and being movable into a second position in which the two ends of the longitudinal groove (15) are open on either side of the valve opening (7),
    characterized in that the valve pin (9) is rotary within the valve opening (7), being movable from a closed position into an open position and vice versa by a rotary motion, that the valve member (5) includes a skirt (6) encompassing the valve pin (9), and further includes a radial opening (18), that the end of the longitudinal groove (15) proximal to the skirt (6) is provided with a transverse groove (17) extending circumferentially in an area of the valve pin (9) lying in the valve opening (7) such as to extend within the height of the skirt (6), and that the transverse groove (17) is in communication with the opening (18) in the skirt (6) to a greater or lesser extent, depending on the open position of the valve (52).
  2. A water proportioning device as claimed in claim 1,
    characterized in that the area of cross-section of the transverse groove (17) decreases with its distance from the longitudinal groove (15) increasing.
  3. A water proportioning device as claimed in claim 2,
    characterized in that the transverse groove (17) extends over a circumferential angle of 180 degrees or smaller.
  4. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the valve pin (9) is axially movable into a third position in which an additional passageway (16) is opened between the water reservoir (1) and the steam-generating chamber (2).
  5. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the valve pin (9) has on its side remote from the transverse groove (17) a second longitudinal groove (16) which, with the valve pin (9) in the first and the second position, has one end thereof within the valve opening (7) of the valve member (5), both ends thereof lying outside the valve opening (7) on either side in the third position reachable by an axial motion of the valve pin (9).
  6. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the valve pin (9) is axially movable beyond the third position into a fourth position, with the effective cross-section of passage in said fourth position being dimensioned sufficiently large to cause the amount of water introduced into the steam-generating chamber (2) to effect a self-cleaning action of the jet system.
  7. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the second longitudinal groove (16) is provided with a section (20) of enlarged cross-section whose both ends lie outside the valve opening (7) on either side only in the fourth position.
  8. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the valve pin (9) takes support upon a spring (13) adapted to be biased by an axial motion of the valve pin (9).
  9. A water proportioning device as claimed in claim 9,
    characterized in that the spring (13) is configured as a compression spring encompassing the actuating end of the valve pin (9) and bearing with one end against an operating button (10) fixedly connected with the valve pin (9) while its other end takes support upon a housing surface (12).
  10. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that means are provided allowing a movement of the valve pin (9) into the third and/or fourth position only when the valve pin (9) is in a predetermined angular position.
  11. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the operating button (10) connected with the valve pin (9) includes a projection (14) cooperating with an abutment (12) on the housing for limiting the axial motion of the operating button (10) in the third position, the abutment having an aperture (37) only in a predetermined area into which the projection (14) is capable of entering on an axial motion of the operating button (10).
  12. A water proportioning device as claimed in any one of the preceding claims,
    characterized in that the valve pin (9) is detachable from the water reservoir (1) in a particular angular position.
  13. A water proportioning device as claimed in any one of the claims 1 to 9,
    characterized in that the valve pin (9) includes a longitudinal bore (22), that the longitudinal bore (22) is connected with the water reservoir (1) through an aperture (24), that the longitudinal bore (22) receives a valve rod (23) extending longitudinally of the valve pin (9), and that the valve rod (23), together with the valve pin (9), forms a second valve (27) arranged at the elevation of the valve member (5).
  14. A water proportioning device as claimed in claim 13,
    characterized in that the second valve (27) is comprised of a valve seat (25) formed in the longitudinal bore (22) and a valve surface (26) provided on an enlarged portion (33) of the valve rod (23).
  15. A water proportioning device as claimed in claim 14,
    characterized in that a spring (29) holding the valve (27) in the closed position takes support upon stops (37, 34) on the valve pin (9) and on the valve rod (23).
  16. A water proportioning device as claimed in claim 14,
    characterized in that the operating button (10) receives slidably therein a push-button (30) against which the valve rod (23) bears, that the push-button (30) extends through a bore (36) provided in the operating button (10), and that the push-button (30) includes an annular collar (35) abutting against the inside of the operating button (10) when the valve (27) is in the closed position.
  17. A water proportioning device as claimed in claim 16,
    characterized in that the operating button (10) is formed by a cap (31) connected to the cup-shaped enlargement (37) at the end of the valve pin (9) through a snap fitting (32).
EP94117143A 1994-01-29 1994-10-29 Water injection device for steam iron Expired - Lifetime EP0665321B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4402683A DE4402683A1 (en) 1994-01-29 1994-01-29 Water inlet device for steam irons
DE4402683 1994-01-29

Publications (2)

Publication Number Publication Date
EP0665321A1 EP0665321A1 (en) 1995-08-02
EP0665321B1 true EP0665321B1 (en) 1998-07-08

Family

ID=6508996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117143A Expired - Lifetime EP0665321B1 (en) 1994-01-29 1994-10-29 Water injection device for steam iron

Country Status (5)

Country Link
US (1) US5531037A (en)
EP (1) EP0665321B1 (en)
AT (1) ATE168147T1 (en)
DE (2) DE4402683A1 (en)
ES (1) ES2120553T3 (en)

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Also Published As

Publication number Publication date
EP0665321A1 (en) 1995-08-02
DE4402683A1 (en) 1995-08-03
DE59406415D1 (en) 1998-08-13
ES2120553T3 (en) 1998-11-01
US5531037A (en) 1996-07-02
ATE168147T1 (en) 1998-07-15

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