EP0245721A1 - Washing machine drum provided with means for wetting the laundry - Google Patents

Washing machine drum provided with means for wetting the laundry Download PDF

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Publication number
EP0245721A1
EP0245721A1 EP87106336A EP87106336A EP0245721A1 EP 0245721 A1 EP0245721 A1 EP 0245721A1 EP 87106336 A EP87106336 A EP 87106336A EP 87106336 A EP87106336 A EP 87106336A EP 0245721 A1 EP0245721 A1 EP 0245721A1
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EP
European Patent Office
Prior art keywords
drum
washing machine
driver
laundry
machine according
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Granted
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EP87106336A
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German (de)
French (fr)
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EP0245721B1 (en
Inventor
Lieselotte Brodzina
Karl-Heinz Dr. Sämann
Detlef Uszkureit
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Individual
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Individual
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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid

Definitions

  • the invention is based on a drum washing machine with a washing drum driven more slowly during a wetting phase than during a cleaning phase and with scooping devices arranged in the area of the drivers protruding into the drum, which guide their perforated jacket from the outside when the drum rotates, the amount of water wetting it into the inside of the drum.
  • Such a drum washing machine is known from DD patent 37 560.
  • scoop blades are arranged as scooping devices within the driver cavities, through which a considerable part of this liquid should scoop when passing through the sump of water or alkali standing in the tub, and during the upward movement of this driver via perforations arranged in the flanks of the driver in the drum.
  • perforations arranged in the flanks of the driver in the drum.
  • Such airfoils and the holes arranged in the flanks of the drivers are not very suitable for effectively wetting the laundry lying inside the drum.
  • the scooped amount of water will flow as soon as it is scooped under the dynamic pressure that arises in the driver cavity and immediately after the driver exits the sump through the perforations in the driver flanks and then flow back to the sump along the inner wall of the drum without significantly wetting the laundry to have.
  • the invention is based on the object of improving a drum washing machine of the type mentioned at the outset in such a way that the amount of water drawn in each case effectively wets the laundry stored in the drum as quickly as possible.
  • this object is achieved by such a design of the scooping devices. That during the wetting phase they absorb the water quantities in raised positions up to the horizontal drum axis and at the earliest from a height in the range of the second eighth of the drum rotation, calculated from the lowest point to the end of the seventh eighth of the drum rotation at the latest.
  • Such a design of scoops can for the first time ensure that the laundry sprinkles from above in a very short time, i.e. is wetted. Since washing is to be carried out with as little use of water as possible, there is only a sump of low height at the bottom of the tub, which protrudes only a little into the drum or only touches the outside of the drum. Laundry that relies solely on contact with this small amount of water during the wetting phase can only wet very slowly and unevenly. With water quantities whose levels do not reach the inside of the drum, the laundry even stays completely dry.
  • the irrigation of the laundry according to the invention by suitably designed scooping devices can considerably accelerate the wetting process and ensure uniform wetting of the laundry.
  • the invention can be developed in a particularly advantageous manner in that the drivers are part of the scooping devices and have airfoils and flood holes on their bottoms directed towards the drum. Scoops designed in this way do not occupy their own space on the circumference of the drum and can be easily represented in terms of production technology.
  • drivers developed into scooping devices provide excellent possibilities for temporarily storing the required amounts of water until the corresponding driver is located far enough above the laundry stored in the drum. From this position, the temporarily stored amount of water can rain through the flood holes in a finely divided form over the laundry.
  • Carriers designed in this way are advantageously further developed in that the airfoils partially close off the carrier cavities which are open towards the outside of the drum on at least one of their edges running parallel to the axis of rotation of the drum. As a result, the driver cavities are closed well enough to the outside so that scooped liquid cannot drain out again.
  • the driver cavities are closed by a driver back arranged in the drum contour and the blades in the direction of rotation of the drum are released from the drum contour. In this way, the scooping effect can be best achieved under exclusion of the risk of the already drained amounts of water running back.
  • the driver cavities are divided into chambers to which at least one airfoil is assigned, which is oriented opposite to the airfoil of the neighboring chamber, the desired irrigation effect can be ensured in both directions of drum rotation in a simple manner.
  • the drivers have non-perforated surfaces on all sides and their flanks form troughs together with adjacent lateral surfaces.
  • Such drivers store the scooped water up to about the level of the horizontal drum axis in their troughs and release this amount of water as soon as the driver tips over with its free end.
  • the laundry is also advantageously irrigated from above and completely wetted in the shortest possible time.
  • the tub 1 in FIG. 1 contains in its upper area a filling opening 2 for detergent introduced from a detergent dispenser 3 together with feed water.
  • the bottom of the lye container 1, which is kept as close as possible to the drum 4, has a recess 5 in which the heating elements 6 required for heating the lye are arranged.
  • a recess 5 At the deepest point of the recess 5 there is an outlet opening 7 which is kept closed by a closure body 8 as long as a drain pump (not shown) does not suck on the drain line 9.
  • This closure body 8 has the task of keeping the space below the drain opening 7 closed as long as there is detergent required for washing the laundry inside the tub.
  • scoops 12 are arranged on the drum circumference in the area of the driver, which when rotating the drum, e.g. in the direction of arrow 13, from the lye stock standing in the recess 5, the respective intermediate storage space, here the driver 11, can fill.
  • this scooped amount of water is first temporarily stored and only released into the drum interior via outlet openings in the intermediate storage space when the intermediate storage space has reached a certain height above the laundry 10 lying in the drum 4.
  • the arrows 14 indicate the manner in which the water so raised rains over the laundry 10.
  • the dash-dot driver 11 of the drum 4 is just in its lowest position. Here he dips with his scooping devices into the lye inside the recess 5 under the bottom of the tub 1 and already absorbs some of the lye. When turning further in the direction of arrow 13, the scooping devices 12 fill the interior of the driver 11 higher than would occur in the static state.
  • the exemplary embodiment shown in FIGS. 5 and 6 for scooping devices on the driver 11 contains, as shovel blades, a plurality of ladles 20 which consist of cut-open features in the sheet metal of the driver back 26, which is part of the drum jacket 21.
  • the ladles 20 are arranged in two rows next to one another and offset from one another parallel to the axis of rotation 24 of the drum 4.
  • the roof-shaped driver 11 is arranged in the interior of the drum 4 and has a plurality of flood holes 17, from which the amount of water drawn can rain over the laundry.
  • the roof part of the driver has fastening tabs 22 on its foot edges, which are inserted through suitable slots in the drum jacket and are bent outside towards the drum jacket.
  • the interior of the driver 11 is divided by bulkheads 23 into several chambers 25, which are covered by the driver back 26 in FIG. 6.
  • a ladle 20 is assigned to each chamber 25.
  • the ladles of adjacent chambers are directed opposite each other, so that the 1st, 3rd, 5th etc. chamber in one drum direction of rotation, and the 2nd, 4th, 6th etc. chamber in the other direction of rotation are filled with water and their Empty the contents from the raised positions above the laundry.
  • the laundry drum 4 shown in detail in FIG. 7 contains, for example, six drivers, of which three drivers 27 are shown here. Instead of a number of six, however, the drum can also contain three drivers as usual.
  • drivers are trough-shaped on their flanks, so that, as the driver in the middle position shows, water can be temporarily stored in the upper trough 28 and raised to a height from which it is on the trough edge on the inside of the drum on the head of the driver 27 can rain on the laundry.
  • a partially permeable plate 29, which covers the trough 28, is shown on the driver located in the middle position.
  • the partial permeability of the plate 29 results from holes 30, which are preferably arranged in the edge region of the plate, so that the water can be well absorbed from the swamp in the trough on the one hand and can escape from the trough via the driver's head on the other hand.
  • This plate prevents the laundry lying at the bottom of the laundry drum from already sucking the trough 28 before the driver 27 has been lifted up. As a result, the laundry would soak itself very strongly, but only in a very limited area, and the other areas of the laundry remained almost dry. A more effective wetting of the laundry, as already explained above, only results from sprinkling the laundry from above.
  • FIG. 8 Another embodiment of a driver 31 with the same function as the driver 27 described with reference to FIG. 7 is shown in FIG. 8. It contains a support strip 32 with an edge bead 33 pointing inward of the drum. On its undersides, the edge bead has slit-like depressions which serve to receive a partially permeable cover plate 34 for the troughs 35 which result on both sides of the support strip 32.
  • the jacket-side edges of the cover plates 34 have bent tabs 36, which are inserted into slots in the jacket plate 37 of the laundry drum 4.
  • the cover plates 34 have large holes 38 in the area near the drum casing 37, which enable rapid absorption of water from the sump into the troughs 35, and small holes 39 in the area near the edge bead 33, which allow metered discharge of the scooped water from the troughs allow.
  • scooping devices Any modification of the scooping devices is possible within the scope of the invention. These do not necessarily have to be in a functional and constructive connection with the drivers, but can also be used as special equipment be distributed around the circumference of the drum. For example, in the direction of rotation of the drum, blades can be arranged in front of drivers according to FIGS. 7 and 8 on the drum jacket, which are still immersed in liquid when their level only affects the drum jacket. If, by means of any devices on the drum, certain amounts of water are drawn from the storage located at the bottom of the tub and lifted to such an extent that the amounts poured down onto the laundry from above, the inventive idea is met.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

In a drum washing machine 4 having a washing drum, which is driven more slowly during a wetting phase than during a washing phase, scoop devices 11, 12, 20, 27, 31 are arranged on the drum circumference and constructed in such a way that they pick up the scooped water during the wetting phase in a position below the axis 15 of rotation of the drum and discharge it into the interior of the drum in a position above the axis of rotation of the drum. During this process the laundry is sprayed during the wetting phase. <IMAGE>

Description

Die Erfindung geht aus von einer Trommelwaschmaschine mit einer während einer Benetzungsphase langsamer als während einer Reinigungsphase angetriebenen Wäschetrommel und mit im Bereich der in die Trommel ragenden Mitnehmer angeordneten Schöpfvorrichtungen, die beim Drehen der Trommel ihren gelochten Mantel von aussen benetzende Wassermengen ins Trommelinnere leiten.The invention is based on a drum washing machine with a washing drum driven more slowly during a wetting phase than during a cleaning phase and with scooping devices arranged in the area of the drivers protruding into the drum, which guide their perforated jacket from the outside when the drum rotates, the amount of water wetting it into the inside of the drum.

Eine derartige Trommelwaschmaschine ist aus der DD-Patentschrift 37 560 bekannt. Dort sind als Schöpfvorrichtungen innerhalb der Mitnehmerhöhlen Schaufelblätter angeordnet, über die beim Durchfahren des unten im Laugenbehälter stehenden Sumpfes von Wasser bzw. Lauge einen erheblichen Teil dieser Flüssigkeit schöpfen sollen und während der Aufwärtsbewegung dieses Mitnehmers über in den Flanken des Mitnehmers angeordnete Lochungen in den Trommel-Innenraum befördern sollen. Derartige Schaufelblätter sowie die in den Flanken der Mitnehmer angeordneten Löcher sind jedoch wenig geeignet, die innerhalb der Trommel liegende Wäsche wirkungsvoll zu benetzen. Die geschöpfte Wassermenge wird nämlich bereits beim Schöpfen unter dem dabei in der Mitnehmerhöhle entstehenden Staudruck und weiterhin sofort nach Austritt des Mitnehmers aus dem Sumpf über die Lochung in den Mitnehmerflanken abfließen und dann entlang der Innenwandung der Trommel zum Sumpf zurückfließen, ohne die Wäsche wesentlich benetzt zu haben.Such a drum washing machine is known from DD patent 37 560. There, scoop blades are arranged as scooping devices within the driver cavities, through which a considerable part of this liquid should scoop when passing through the sump of water or alkali standing in the tub, and during the upward movement of this driver via perforations arranged in the flanks of the driver in the drum. To convey the interior. Such airfoils and the holes arranged in the flanks of the drivers are not very suitable for effectively wetting the laundry lying inside the drum. The scooped amount of water will flow as soon as it is scooped under the dynamic pressure that arises in the driver cavity and immediately after the driver exits the sump through the perforations in the driver flanks and then flow back to the sump along the inner wall of the drum without significantly wetting the laundry to have.

Der F.rfindung liegt die Aufgabe zugrunde, eine Trommelwaschmaschine der eingangs genannten Art so zu verbessern, daß die jeweils geschöpfte Wassermenge die in der Trommel lagernde Wäsche schnellstmöglich wirkungsvoll benetzt.The invention is based on the object of improving a drum washing machine of the type mentioned at the outset in such a way that the amount of water drawn in each case effectively wets the laundry stored in the drum as quickly as possible.

Erfindungsgemäß wird diese Aufgabe durch eine derartige Ausbildung der Schöpfvorrichtungen gelöst. daß sie während der Benetzungsphase die Wassermengen in angehobenen Positionen bis höchstens zur waagerechten Trommelachse in sich aufnehmen und frühestens aus einer Höhe im Bereich des zweiten Achtels der Trommeldrehung, gerechnet vom tiefsten Punkt an bis spätestens zum Ende des siebten Achtels der Trommeldrehung ins Trommelinnere abgeben.According to the invention, this object is achieved by such a design of the scooping devices. that during the wetting phase they absorb the water quantities in raised positions up to the horizontal drum axis and at the earliest from a height in the range of the second eighth of the drum rotation, calculated from the lowest point to the end of the seventh eighth of the drum rotation at the latest.

Eine solche Ausbildung von Schöpfvorrichtungen kann erstmals dafür sorgen, daß die Wäsche binnen kürzester Zeit von oben herab beregnet, d.h. benetzt wird. Da in zunehmendem Maße mit möglichst wenig Wassereinsatz gewaschen werden soll, befindet sich am Boden des Laugenbehälters nur noch ein Sumpf von geringer Höhe, der nur noch wenig in die Trommel hineinragt oder die Trommel nur noch außen tangiert. Wäsche, die während der Benetzungsphase ausschließlich auf die Berührung mit dieser geringen Menge von Wasser angewiesen ist, kann sich nur sehr langsam und ungleichmäßig benetzen. Bei Wassermengen, deren Niveaus nicht ins Trommelinnere reichen, bleibt die Wäsche sogar ganz trocken. Die erfindungsgemäße Beregnung der Wäsche durch geeignet ausgebildete Schöpfvorrichtungen kann den Benetzungsvorgang erheblich beschleunigen und für eine gleichmäßige Benetzung der Wäsche sorgen.Such a design of scoops can for the first time ensure that the laundry sprinkles from above in a very short time, i.e. is wetted. Since washing is to be carried out with as little use of water as possible, there is only a sump of low height at the bottom of the tub, which protrudes only a little into the drum or only touches the outside of the drum. Laundry that relies solely on contact with this small amount of water during the wetting phase can only wet very slowly and unevenly. With water quantities whose levels do not reach the inside of the drum, the laundry even stays completely dry. The irrigation of the laundry according to the invention by suitably designed scooping devices can considerably accelerate the wetting process and ensure uniform wetting of the laundry.

Die Erfindung kann in besonders vorteilhafter Weise dadurch weitergebildet werden, daß die Mitnehmer Teile der Schöpfvorrichtungen sind und Schaufelblätter sowie an ihren trommeleinwärts gerichteten Böden Flutlöcher aufweisen. Derartig ausgebildete Schöpfvorrichtungen nehmen am Umfang der Trommel keinen eigenen Raum ein und können in fertigungstechnischer Hinsicht einfach dargestellt werden. Außerdem bilden zu Schöpfvorrichtungen ausgearbeitete Mitnehmer hervorragende Möglichkeiten, die erforderlichen Wassermengen solange zwischenzuspeichern, bis sich der entsprechende Mitnehmer weit genug oberhalb der in der Trommel lagernden Wäsche befindet. Aus dieser Position kann die zwischengespeicherte Wassermenge durch die Flutlöcher in fein verteilter Form über die Wäsche regnen.The invention can be developed in a particularly advantageous manner in that the drivers are part of the scooping devices and have airfoils and flood holes on their bottoms directed towards the drum. Scoops designed in this way do not occupy their own space on the circumference of the drum and can be easily represented in terms of production technology. In addition, drivers developed into scooping devices provide excellent possibilities for temporarily storing the required amounts of water until the corresponding driver is located far enough above the laundry stored in the drum. From this position, the temporarily stored amount of water can rain through the flood holes in a finely divided form over the laundry.

Solchermaßen gestaltete Mitnehmer sind vorteilhafterweise dadurch weitergebildet, daß die Schaufelblätter die zur Trommelaußenseite hin offenen Mitnehmerhöhlen an mindestens einer ihrer parallel zur Drehachse der Trommel verlaufenden Kanten teilweise abschließen. Hierdurch sind die Mitnehmerhöhlen nach außen gut genug abgeschlossen, so daß geschöpfte Flüssigkeit nicht wieder nach außen ablaufen kann.Carriers designed in this way are advantageously further developed in that the airfoils partially close off the carrier cavities which are open towards the outside of the drum on at least one of their edges running parallel to the axis of rotation of the drum. As a result, the driver cavities are closed well enough to the outside so that scooped liquid cannot drain out again.

In einer weiteren vorteihafen Ausführungsform der Erfindung sind die Mitnehmerhöhlen durch einen in der Trommelkontur angeordneten Mitnehmerrücken verschlossen und die Schaufelblätter in Drehrichtung der Trommel aus der Trommelkontur ausgestellt. Hierdurch läßt sich unter Umständen die Schöpfwirkung unter Ausschluß der Gefahr des Zurücklaufens bereits geschöpfter Wassermengen am besten erzielen.In a further advantageous embodiment of the invention, the driver cavities are closed by a driver back arranged in the drum contour and the blades in the direction of rotation of the drum are released from the drum contour. In this way, the scooping effect can be best achieved under exclusion of the risk of the already drained amounts of water running back.

Wenn die Mitnehmerhöhlen gemäß einer bevorzugten Weiterbildung dieser Ausführungsform in Kammern unterteilt sind, denen mindestens je ein Schaufelblatt zugeordnet ist, das zum Schaufelblatt der Nachbarkammer entgegengesetzt ausgerichtet ist, kann auf einfache Weise der angestrebte Beregnungseffekt in beiden Trommeldrehrichtungen sichergestellt werden.If, according to a preferred development of this embodiment, the driver cavities are divided into chambers to which at least one airfoil is assigned, which is oriented opposite to the airfoil of the neighboring chamber, the desired irrigation effect can be ensured in both directions of drum rotation in a simple manner.

Die gleichen Vorteile hat eine andere Weiterbildung der Erfindung, bei der die Mitnehmer allseitig undurchbrochene Flächen aufweisen und ihre Flanken zusammen mit benachbarten Mantelflächen Mulden bilden. Derartige Mitnehmer speichern die geschöpfte Wassermenge bis etwa in Höhe der waagerechten Trommelachse in ihren Mulden auf und geben diese Wassermenge ab, sobald der Mitnehmer mit seinem freien Ende überkippt. Dadurch wird die Wäsche ebenfalls in vorteilhafter Weise von oben beregnet und in kürzester Zeit vollständig benetzt.Another development of the invention has the same advantages, in which the drivers have non-perforated surfaces on all sides and their flanks form troughs together with adjacent lateral surfaces. Such drivers store the scooped water up to about the level of the horizontal drum axis in their troughs and release this amount of water as soon as the driver tips over with its free end. As a result, the laundry is also advantageously irrigated from above and completely wetted in the shortest possible time.

Damit die am Boden der Trommel liegende Wäsche bei einem allmählich angehobenen Mitnehmer die in der Mulde zwischengespeicherte Wassermenge nicht in uneffektiver Weise örtlich konzentriert vollständig aufsaugt, ehe ein Beregnungseffekt einsetzen kann, ist es bei derartig ausgestalteten Mitnehmern vorteilhaft, wenn die Mulden mit teilweise durchlässigen Platten abgedeckt sind. Solche Platten schützen die zwischengespeicherte Wassermenge vor ihrem vorzeitigen Aufsaugen durch die am Boden liegende Wäsche. Es hat sich nämlich gezeigt, daß dieselben Wassermengen die Wäsche schneller benetzen, wenn sie anstelle von örtlich begrenzten Saugvorgängen von oben her fein über die Wäsche verteilt wird.So that the laundry lying on the bottom of the drum does not soak up the amount of water temporarily stored in the trough in a concentrated manner in an ineffective manner in the event of a gradually raised driver before a sprinkling effect can occur, it is advantageous for drivers designed in this way if the troughs are covered with partially permeable plates are. Such plates protect the temporarily stored amount of water from being sucked up prematurely by the laundry lying on the floor. It has been shown that the same amounts of water wet the laundry faster if it is finely distributed over the laundry instead of locally limited suction processes.

Eine Trommelwaschmaschine der erfindungsgemäßen Art wird in vorteilhafter Weise dadurch weitergebildet, daß die Drehzahl der Wäschetrommel während der Benetzungsphase so eingestellt ist, daß sich am Trommelmantel eine Umfangsgeschwindigkeit von höchstens 0,75

Figure imgb0001
, vorzugsweise 0,67
Figure imgb0002
, ergibt. Erst bei so langsamer Umfangsgeschwindigkeit fallen Zentrifugalkräfte nicht mehr ins Gewicht, die eine genügend feine Verteilung des Wassers über die Wäsche verhindern würden und sind die Beschleunigungs- und Trägheitsverhältnisse der geschöpften Wassermengen aufeinander abgestimmt. Bei einem Trommeldurchmesser von 476 mm ergeben sich daher eine optimale Drehzahl nopt = 27 min-1 und eine maximale Drehzahl n = 30 min . maxA drum washing machine of the type according to the invention is advantageously further developed in that the rotational speed of the laundry drum during the wetting phase is set such that a circumferential speed of at most 0.75 is found on the drum shell
Figure imgb0001
 , preferably 0.67
Figure imgb0002
 , results. Only when the peripheral speed is so slow do centrifugal forces no longer play a role, which would prevent the water from being distributed sufficiently finely over the laundry, and are the acceleration and inertia ratios of the scooped water quantities coordinated. With a drum diameter of 476 mm, this results in an optimal speed n opt = 27 min -1 and a maximum speed n = 30 min. Max

Anhand der in der Zeichnung dargestellten Ausführungsbeispiele ist die Erfindung nachstehend erläutert. Es zeigen:

  • Fig. 1 eine schematische, aufgebrochene Darstellung des Laugenbehälters und der Trommel einer Trommelwaschmaschine,
  • Fig. 2 bis
  • Fig. 4 vier verschiedene Positionen eines erfindungsgemäß ausgestatteten Mitnehmers,
  • Fig. 5 und
  • Fig. 6 (Ansicht in Blickrichtung des Pfeiles VI) eine andere Ausgestaltung der Trommelwandung und des Mitnehmers derselben Art wie die Schöpfvorrichtungen in Fig. 2 bis 4,
  • Fig. 7 eine geschnittene Teilansicht einer Wäschetrommel mit einer anderen Ausbildungsform von Mitnehmern und
  • Fig. 8 eine andere Ausgestaltung eines Mitnehmers derselben Art wie die in Fig. 7 dargestellten.
The invention is explained below on the basis of the exemplary embodiments illustrated in the drawing. Show it:
  • 1 is a schematic, broken-open representation of the tub and the drum of a drum washing machine,
  • Fig. 2 to
  • 4 shows four different positions of a driver equipped according to the invention,
  • Fig. 5 and
  • 6 (view in the direction of arrow VI) another embodiment of the drum wall and the driver of the same type as the scooping devices in FIGS. 2 to 4,
  • Fig. 7 is a partial sectional view of a laundry drum with another form of training of carriers and
  • Fig. 8 shows another embodiment of a driver of the same type as that shown in Fig. 7.

Der Laugenbehälter 1 in Fig. 1 enthält in seinem oberen Bereich eine Einfüllöffnung 2 für aus einer Waschmittel-Einspülvorrichtung 3 zusammen mit Zulaufwasser eingeführtes Waschmittel.The tub 1 in FIG. 1 contains in its upper area a filling opening 2 for detergent introduced from a detergent dispenser 3 together with feed water.

Der Boden des in möglichst geringem Abstand zur Trommel 4 gehaltenen Laugenbehälters 1 hat eine Vertiefung 5, in der die zum Erwärmen der Lauge nötigen Heizkörper 6 angeordnet sind. An der tiefsten Stelle der Vertiefung 5 ist eine Auslauföffnung 7 angebracht, die durch einen Verschlußkörper 8 verschlossen gehalten wird, solange eine nicht dargestellte Laugenpumpe an der Abflußleitung 9 nicht saugt. Dieser Verschlußkörper 8 hat die Aufgabe, den Raum unterhalb der Abflußöffnung 7 solange verschlossen zu halten, wie sich zum Waschen der Wäsche benötigtes Waschmittel innerhalb des Laugenbehälters befindet.The bottom of the lye container 1, which is kept as close as possible to the drum 4, has a recess 5 in which the heating elements 6 required for heating the lye are arranged. At the deepest point of the recess 5 there is an outlet opening 7 which is kept closed by a closure body 8 as long as a drain pump (not shown) does not suck on the drain line 9. This closure body 8 has the task of keeping the space below the drain opening 7 closed as long as there is detergent required for washing the laundry inside the tub.

Im zunehmenden Bestreben, zum Waschen immer weniger Wasser und Waschmittel einzusetzen, hat sich in der jüngsten Zeit die zum Waschen erforderliche Wassermenge so verringert, daß die Wäschetrommel 4 nun nur noch geringfügig in die am Boden des Laugenbehälters 1 befindliche Lauge eintaucht. Hierdurch entsteht jedoch eine bisher nicht bekannte Schwierigkeit: Die am Boden der Wäschetrommel 1 lagernde Wäsche 10 kommt hierbei in nicht mehr ausreichendem Maße in Berührung mit der Lauge, so daß die Wäsche nur noch sehr langsam und sehr unvollständig benetzt wird. Dadurch gerät das Waschergebnis in Gefahr.In the increasing endeavor to use less and less water and detergent for washing, the amount of water required for washing has recently decreased so that the washing drum 4 is now only slightly immersed in the lye located at the bottom of the tub 1. However, this creates a hitherto unknown problem: the laundry 10 stored on the bottom of the drum 1 does not come into sufficient contact with the alkali so that the laundry is wetted only very slowly and very incompletely. This will jeopardize the washing result.

Zwar ist bereits vorgschlagen worden (DE-OS 33 24 481) während der Benetzungsphase die Trommeldrehzahl auf einen Wert (z.B. 30 min 1) unterhalb der Waschdrehzahl (z.B. 50 min-1) zu reduzieren, damit der Wäscheposten besser und schneller durchfeuchtet wird. Diese Methode erzielt jedoch nur dann die angestrebte Wirkung, wenn ein gewisses Laugenniveau in der Wäschetrommel gewährleistet werden kann, bei dem die Wäsche noch weit genug in die Lauge eintaucht. Neuere Entwicklungen unterschreiten jedoch auch ein hierfür noch zulässiges Mindestniveau, so daß die bekannte Methode - alleinig angewendet - den gewünschten Erfolg nicht mehr erzielen kann.Although it has already been proposed (DE-OS 33 24 481) to reduce the drum speed to a value (for example 30 min 1) below the washing speed (for example 50 min -1 ) during the wetting phase, so that the laundry items are better and faster moistened. However, this method only achieves the desired effect if a certain lye level can be guaranteed in the laundry drum, at which the laundry is still immersed sufficiently in the lye. However, recent developments also fall below a minimum level that is still permissible for this purpose, so that the known method - used alone - can no longer achieve the desired success.

Erfindungsgemäß sind am Trommelumfang im Bereich der Mitnehmer 11 Schöpfvorrichtungen 12 angeordnet, die beim Drehen der Trommel, z.B. in Richtung des Pfeiles 13, aus dem in der Vertiefung 5 stehenden Laugenvorrat den jeweiligen Zwischenspeicherraum, hier den Mitnehmer 11, füllen können. Während der Aufwärtsbewegung des Mitnehmers wird diese geschöpfte Wassermenge zunächst zwischengespeichert und über Auslaßöffnungen in dem Zwischenspeicherraum erst in den Trommel-innenraum abgegeben, wenn der Zwischenspeicherraum eine gewisse Höhe über der in der Trommel 4 liegenden Wäsche 10 erreicht hat. Durch die Pfeile 14 ist angedeutet, in welcher Weise das derartig hochgehobene Wasser über die Wäsche 10 regnet.According to the invention 11 scoops 12 are arranged on the drum circumference in the area of the driver, which when rotating the drum, e.g. in the direction of arrow 13, from the lye stock standing in the recess 5, the respective intermediate storage space, here the driver 11, can fill. During the upward movement of the driver, this scooped amount of water is first temporarily stored and only released into the drum interior via outlet openings in the intermediate storage space when the intermediate storage space has reached a certain height above the laundry 10 lying in the drum 4. The arrows 14 indicate the manner in which the water so raised rains over the laundry 10.

Irn ausschnittsweise dargestellten Laugenbehälter der Fig. 2 befindet sich der strichpunktierte Mitnehmer 11 der Trommel 4 gerade in seiner tiefsten Position. Hierbei taucht er mit seinen Schöpfvorrichtungen in die innerhalb der Vertiefung 5 unterm Boden des Laugenbehälters 1 stehende Lauge ein und nimmt bereits einen Teil der Lauge in sich auf. Beim Weiterdrehen in Richtung des Pfeiles 13 füllen die Schöpfvorrichtungen 12 den Innenraum des Mitnehmers 11 höher, als sich dies im statischen Zustand einstellen würde.2, the dash-dot driver 11 of the drum 4 is just in its lowest position. Here he dips with his scooping devices into the lye inside the recess 5 under the bottom of the tub 1 and already absorbs some of the lye. When turning further in the direction of arrow 13, the scooping devices 12 fill the interior of the driver 11 higher than would occur in the static state.

Beim weiteren Anheben des Mitnehmers 11 (Fig. 3) infolge der Drehung der Trommel 4 in Richtung des Pfeils 13 durchläuft der Mitnehmer Positionen unterhalb der waagerechten Trommelachse 15 (im zweiten Achtel der Drehung). In jeder dieser Positionen speichert der Hohlraum des Mitnehmers 11 eine gewisse Wassermenge 16, bis der Mitnehmer 11 eine Position, in diesem Ausführungsbeispiel im dritten Achtel oberhalb der Trommeldrehachse 15, einnimmt, bei der die Wassermenge 16 den Rand des untersten der Löcher 17 im Boden 18 des Mitnehmers 11 erreicht. Von da ab fließt das Wasser 16 aus dem Mitnehmer 11 durch die Löcher 17 tropfenweise in den Innenraum der Trommel 4 ab. Dieser Vorgang ist in Fig. 4 dargestellt, die auch in eindrucksvoller Weise die Regentropfen 19 zeigt, die zur gleichmäßigen und vollständigen Benetzung der Wäsche führen. Ehe der Mitnehmer 11 das siebte Achtel der Drehung der Trommel 4 erreicht hat, hat sich der Innenraum des Mitnehmers 11 entleert und kann nach Durchlaufen der restlichen Drehung erneut Wasser aus dem unten im Laugenbehälter 1 stehenden Vorrat schöpfen.When the driver 11 (FIG. 3) is raised further as a result of the rotation of the drum 4 in the direction of the arrow 13, the driver passes through positions below the horizontal drum axis 15 (in the second eighth of the rotation). In each of these positions, the cavity of the catch 11 stores a certain amount of water 16 until the catch 11 assumes a position, in this exemplary embodiment in the third eighth above the drum axis of rotation 15, in which the amount of water 16 borders the bottom of the holes 17 in the bottom 18 of the driver 11 reached. From there, the water 16 flows from the driver 11 dropwise through the holes 17 into the interior of the drum 4. This process is shown in Fig. 4, which also shows the raindrops 19, which lead to the even and complete wetting of the laundry in an impressive manner. Before the driver 11 has reached the seventh eighth of the rotation of the drum 4, the interior of the driver 11 has emptied and can again draw water from the supply located at the bottom in the tub 1 after passing through the remaining rotation.

Für das Beispiel in Fig. 2 bis 4 besteht eine Regel für die Bemessung des Abstandes der einander zugewandten Kanten der als Schöpfvorrichtungen ausgebildeten Schaufelbleche 12. Dieser Abstand sollte etwa in derselben Größenordnung sein wie der Abstand des jeweils äußeren Rands der am weitesten voneinander entfernten Löcher im Querschnitt der Mitnehmer betrachtet. Ist der Abstand der Schaufelkanten größer als der Abstand der Lochränder, dann ist das Volumen des in jedem Mitnehmer zwischengespeicherten Wassers verhältnismäßig gering und eine Beregnung der Wäsche beginnt erst dann, wenn sich der Mitnehmer oberhalb der waagerechten Trommelachse 15 befindet. Ist der Abstand der Schaufelkanten jedoch kleiner als der Abstand der Lochränder, dann ist das Volumen des zwischengespeicherten Wassers größer und die Beregnung beginnt bereits unterhalb der waagerechten Trommelachse. Sofern die Position des Mitnehmers beim Beginn des Wasseraustritts aus den Flutlöchern noch weit unterhalb der waagerechten Trommelachse liegt, besteht die Gefahr, daß ein Teil des abgeregneten Wassers die Wäsche nicht trifft, oder daß das austretende Wasser sich nicht von der Mitnehmerwandung löst, sondern an ihr herabfließt. Dann könnte keine wirkungsvolle Benetzung eintreten. Zwischen beiden Extremen ist daher ein Optimum zu finden, auf das die Umfangsgeschwindigkeit des Trommelmantels ebenfalls einen Einfluß hat.For the example in FIGS. 2 to 4, there is a rule for the dimensioning of the distance between the mutually facing edges of the blade plates 12 designed as scooping devices. This distance should be approximately the same order of magnitude as the distance between the outer edge of the most distant holes in the Cross section of the carriers considered. If the spacing of the blade edges is greater than the spacing of the hole edges, then the volume of the water temporarily stored in each carrier is comparatively small and washing of the laundry only begins when the carrier is located above the horizontal drum axis 15. However, if the distance between the bucket edges is smaller than the distance between the edges of the holes, then the volume of the temporarily stored water is greater and the irrigation starts below the horizontal Drum axis. If the position of the driver is still far below the horizontal drum axis at the start of the water discharge from the flood holes, there is a risk that part of the rain water will not hit the laundry, or that the escaping water will not detach from the driver wall, but on it flows down. Then no effective wetting could occur. An optimum is therefore to be found between the two extremes, on which the peripheral speed of the drum shell also has an influence.

Beispielsweise ist bei einer erfindungsgemäß ausgerüsteten Wäschetrommel mit einem Durchmesser von etwa 475 mm die Waschdrehzahl auf 52 min-1 = 1,3 - Umfangsgeschwindigkeit eingestellt. Es hat sich gezeigt, daß zum Benetzen der Wäsche in einer solchen Trommel die optimale Drehzahl bei 27 min = 0,67 - Umfangsgeschwindigkeit liegt. Als Cbergrenze der Umfangsgeschwindigkeit, bei der noch eine brauchbare Benetzung stattfindet, sollte bei einer solchen Wäschetrommel 0,75 m gelten (= 30 min-1).For example, in a laundry drum equipped according to the invention with a diameter of approximately 475 mm, the washing speed is set to 52 min −1 = 1.3 − peripheral speed. It has been shown that the optimum speed for wetting the laundry in such a drum is 27 min = 0.67 circumferential speed. The upper limit of the peripheral speed at which usable wetting still occurs should be 0.75 m in such a washing drum (= 30 min -1 ).

Das in Fig. 5 und 6 dargestellte Ausführungsbeispiel für Schöpfvorrichtungen am Mitnehmer 11 enthält als Schaufelblätter mehrere Schöpflöffel 20, die aus einseitig aufgeschnittenen Ausprägungen im Blech des Mitnehmer-Rückens 26 bestehen, der Bestandteil des Trommelmantels 21 ist. Die Schöpflöffel 20 sind in zwei Reihen nebeneinander und jeweils versetzt zueinander parallel zur Drehachse 24 der Trommel 4 angeordnet.The exemplary embodiment shown in FIGS. 5 and 6 for scooping devices on the driver 11 contains, as shovel blades, a plurality of ladles 20 which consist of cut-open features in the sheet metal of the driver back 26, which is part of the drum jacket 21. The ladles 20 are arranged in two rows next to one another and offset from one another parallel to the axis of rotation 24 of the drum 4.

Über diesen Reihen von Schöpflöffeln 20 ist im Innenraum der Trommel 4 der dachförmige Mitnehmer 11 angeordnet, der mehrere Flutlöcher 17 aufweist, aus denen die geschöpfte Wassermenge über die Wäsche regnen kann. Das Dachteil des Mitnehmers hat an seinen Fußkanten Befestigungslappen 22, die durch passende Schlitze im Trommelmantel gesteckt und außen zum Trommelmantel hin umgebogen sind.Above these rows of ladles 20, the roof-shaped driver 11 is arranged in the interior of the drum 4 and has a plurality of flood holes 17, from which the amount of water drawn can rain over the laundry. The roof part of the driver has fastening tabs 22 on its foot edges, which are inserted through suitable slots in the drum jacket and are bent outside towards the drum jacket.

Der Innenraum des Mitnehmers 11 ist durch Schottwände 23 in mehrere Kammern 25 unterteilt, die in Fig. 6 durch den Mitnehmer-Rücken 26 verdeckt sind. Jeder Kammer 25 ist ein Schöpflöffel 20 zugeordnet. Die Schöpflöffel jeweils benachbarter Kammern sind einander entgegengesetzt gerichtet, so daß in einer Trommeldrehrichtung die 1., 3., 5. usw. Kammer, in der anderen Drehrichtung die 2., 4., 6. usw. Kammer mit Wasser gefüllt werden und ihren Inhalt aus angehobenen Positionen jeweils über der Wäsche entleeren.The interior of the driver 11 is divided by bulkheads 23 into several chambers 25, which are covered by the driver back 26 in FIG. 6. A ladle 20 is assigned to each chamber 25. The ladles of adjacent chambers are directed opposite each other, so that the 1st, 3rd, 5th etc. chamber in one drum direction of rotation, and the 2nd, 4th, 6th etc. chamber in the other direction of rotation are filled with water and their Empty the contents from the raised positions above the laundry.

Die in Fig. 7 ausschnittsweise dargestellte Wäschetrommel 4 enthält beispielsweise sechs Mitnehmer, von denen hier drei Mitnehmer 27 dargestellt sind. Statt einer Anzahl von sechs kann die Trommel jedoch auch wie üblich drei Mitnehmer enthalten.The laundry drum 4 shown in detail in FIG. 7 contains, for example, six drivers, of which three drivers 27 are shown here. Instead of a number of six, however, the drum can also contain three drivers as usual.

Diese Mitnehmer sind an ihren Flanken muldenförmig ausgebildet, so daß, wie der in der mittleren Position befindliche Mitnehmer zeigt, in der oberen Mulde 28 Wasser zwischengespeichert und bis in eine Höhe angehoben werden kann, aus der es über die trommelinnenseitige Muldenkante am Kopf des Mitnehmers 27 auf die Wäsche regnen kann. Am in mittlerer Postition befindlichen Mitnehmer ist eine teilweise durchlässige Platte 29 dargestellt, welche die Mulde 28 abdeckt. Die teilweise Durchlässigkeit der Platte 29 ergibt sich durch Löcher 30, die vorzugsweise im Randbereich der Platte angeordnet sind, damit das Wasser einerseits aus dem Sumpf in der Mulde gut aufgenommen werden und andererseits über den Kopf des Mitnehmers aus der Mulde entweichen kann. Durch diese Platte wird verhindert, daß die unten in der Wäschetrommel liegende Wäsche die Mulde 28 bereits leersaugt, ehe der Mitnehmer 27 in die Höhe gehoben worden ist. Hierdurch würde sich die Wäsche zwar sehr stark vollsaugen, jedoch nur in einem örtlich sehr begrenzten Bereich, und die übrigen Bereiche der Wäsche blieben nahezu trocken. Eine effektivere Benetzung der Wäsche ergibt sich, wie oben bereits erläutert, erst durch Beregnung der Wäsche von oben her.These drivers are trough-shaped on their flanks, so that, as the driver in the middle position shows, water can be temporarily stored in the upper trough 28 and raised to a height from which it is on the trough edge on the inside of the drum on the head of the driver 27 can rain on the laundry. A partially permeable plate 29, which covers the trough 28, is shown on the driver located in the middle position. The partial permeability of the plate 29 results from holes 30, which are preferably arranged in the edge region of the plate, so that the water can be well absorbed from the swamp in the trough on the one hand and can escape from the trough via the driver's head on the other hand. This plate prevents the laundry lying at the bottom of the laundry drum from already sucking the trough 28 before the driver 27 has been lifted up. As a result, the laundry would soak itself very strongly, but only in a very limited area, and the other areas of the laundry remained almost dry. A more effective wetting of the laundry, as already explained above, only results from sprinkling the laundry from above.

Eine andere Ausgestaltung eines Mitnehmers 31 mit derselben Funktion wie der anhand von Fig. 7 beschriebene Mitnehmer 27 ist in Fig. 8 dargestellt. Er enthält eine Stützleiste 32 mit einem trommeleinwärts zeigenden Randwulst 33. An seinen Unterseiten hat der Randwulst schlitzartige Vertiefungen, die zur Aufnahme je einer teilweise durchlässigen Abdeckplatte 34 für die sich an beiden Seiten der Stützleiste 32 ergebenden Mulden 35 dienen. Die mantelseitigen Ränder der Abdeckplatten 34 haben umgebogene Lappen 36, die in Schlitzen des Mantelblechs 37 der Wäschetrommel 4 stecken.Another embodiment of a driver 31 with the same function as the driver 27 described with reference to FIG. 7 is shown in FIG. 8. It contains a support strip 32 with an edge bead 33 pointing inward of the drum. On its undersides, the edge bead has slit-like depressions which serve to receive a partially permeable cover plate 34 for the troughs 35 which result on both sides of the support strip 32. The jacket-side edges of the cover plates 34 have bent tabs 36, which are inserted into slots in the jacket plate 37 of the laundry drum 4.

Die Abdeckplatten 34 haben im Bereich nahe dem Trommelmantel 37 große Löcher 38, die eine schnelle Aufnahme von Wasser aus dem Sumpf in die Mulden 35 ermöglichen, und kleine Löcher 39 im Bereich nahe dem Randwulst 33, die eine dosierte Abgabe des geschöpften Wassers aus den Mulden gestatten.The cover plates 34 have large holes 38 in the area near the drum casing 37, which enable rapid absorption of water from the sump into the troughs 35, and small holes 39 in the area near the edge bead 33, which allow metered discharge of the scooped water from the troughs allow.

Im Rahmen der Erfindung ist eine beliebige Abwandlung der Schöpfvorrichtungen möglich. Diese müssen nicht unbedingt im funktionellen und konstruktiven Zusammenhang mit den Mitnehmern stehen, sondern können auch als besondere Einrichtungen am Umfang der Trommel verteilt sein. Beispielweise können in Drehrichtung der Trommel vor Mitnehmern gemäß Fig. 7 und 8 am Trommelrnantel Schaufelblätter angeordnet sein, die auch dann noch in Flüssigkeit eintauchen, wenn deren Niveau den Trommelmantel nur noch tangiert. Sofern durch irgendwelche Einrichtungen an der Trommel gewisse Wassermengen aus dem unten im Laugenbehälter stehenden Vorrat geschöpft und soweit hochgehoben werden, daß die geschöpften Mengen von oben herab auf die Wäsche regnen, ist der Erfindungsgedanke getroffen.Any modification of the scooping devices is possible within the scope of the invention. These do not necessarily have to be in a functional and constructive connection with the drivers, but can also be used as special equipment be distributed around the circumference of the drum. For example, in the direction of rotation of the drum, blades can be arranged in front of drivers according to FIGS. 7 and 8 on the drum jacket, which are still immersed in liquid when their level only affects the drum jacket. If, by means of any devices on the drum, certain amounts of water are drawn from the storage located at the bottom of the tub and lifted to such an extent that the amounts poured down onto the laundry from above, the inventive idea is met.

Claims (8)

1. Trommelwaschmaschine mit einer während einer Benetzungsphase langsamer als während einer Reinigungsphase angetriebenen Wäschetrommel und mit im Bereich der in die Trommel ragenden Mitnehmer angeordneten Schöpfvorrichtungen, die beim Drehen der Trommel ihren gelochten Mantel von außen benetzende Wassermengen ins Trommelinnere leiten, dadurch gekennzeichnet , daß die Schöpfvorrichtungen (11, 12, 20, 27, 31) so ausgebildet sind, daß sie während der Benetzungsphase die Wassermengen in angehobenen Positionen bis höchstens zur waagerechten Trommelachse (15) in sich aufnehmen und frühestens aus einer Höhe im Bereich des zweiten Achtels der Trommeldrehung gerechnet vom tiefsten Punkt an bis spätestens zum Ende des siebten Achtels der Trommeldrehung ins Trommelinnere abgeben.1. Drum washing machine with a washing drum driven more slowly during a wetting phase than during a cleaning phase and with scooping devices arranged in the area of the drivers projecting into the drum, which guide the perforated jacket from the outside when the drum rotates their amounts of water wetting water into the inside of the drum, characterized in that the scooping devices (11, 12, 20, 27, 31) are designed so that during the wetting phase they absorb the water quantities in raised positions up to at most the horizontal drum axis (15) and at the earliest from a height in the range of the second eighth of the drum rotation from Place the lowest point at the end of the seventh eighth of the drum rotation at the latest. 2. Trommelwaschmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mitnehmer (11) Teile der Schöpfvorrichtungen sind und Schaufelblätter (12, 20) sowie an ihren trommeleinwärts gerichteten Böden (18) Flutlöcher (17) aufweisen.2. Drum washing machine according to claim 1, characterized in that the drivers (11) are parts of the scooping devices and shovel blades (12, 20) and on their inwardly directed bottoms (18) have flood holes (17). 3. Trommelwaschmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Schaufelblätter (12) die zur Trommelaußenseite hin offenen Mitnehmerhöhlen an mindestens einer ihrer parallel zur Drehachse (24) der Trommel (4) verlaufenden Kanten teilweise abschließen.3. Drum washing machine according to claim 2, characterized in that the shovel blades (12) partially close the driver cavities open towards the drum outside on at least one of their edges parallel to the axis of rotation (24) of the drum (4). 4. Trommelwaschmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Mitnehmerhöhlen (25) durch einen in der Trommelkontur (21) angeordneten Mitnehmer-Rücken (26) verschlossen sind und die Schaufelblätter (20) in Drehrichtung (13) der Trommel (4) aus der Trommelkontur (21) ausgeprägt sind.4. Drum washing machine according to claim 2, characterized in that the driver cavities (25) are closed by a driver back (26) arranged in the drum contour (21) and the blades (20) in the direction of rotation (13) of the drum (4) the drum contour (21) are pronounced. 5. Trommelwaschmaschine nach Anspruch 4, dadurch gekennzeichnet, daß die Mitnehmerhöhlen in Kammern (25) unterteilt sind, denen mindestens je ein Schaufelblatt (20) zugeordnet ist, das zum Schaufelblatt der Nachbarkammer entgegengesetzt ausgerichtet ist.5. drum washing machine according to claim 4, characterized in that the driver cavities are divided into chambers (25), each of which is assigned at least one airfoil (20) which is oriented opposite to the airfoil of the adjacent chamber. 6. Trommelwaschmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mitnehmer (27, 31) allseitig undurchbrochene Flächen aufweisen und ihre Flanken zusammen mit benachbarten Mantelflächen Mulden (28, 35) bilden.6. drum washing machine according to claim 1, characterized in that the drivers (27, 31) have non-perforated surfaces on all sides and their flanks form troughs (28, 35) together with adjacent lateral surfaces. 7. Trommelwaschmaschine nach Anspruch 6, dadurch gekennzeichnet, daß die Mulden (28, 35) mit teilweise durchlässigen Platten (29, 34) abgedeckt sind.7. drum washing machine according to claim 6, characterized in that the troughs (28, 35) with partially permeable plates (29, 34) are covered. 8. Trommelwaschmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Drehzahl der Wäschetrommel (4) während der Benetzungsphase so eingestellt ist, daß sich am Trommelmantel eine Umfangsgeschwindigkeit von höchstens 0,75
Figure imgb0003
, vorzugsweise 0,67
Figure imgb0004
, ergibt. 8 . Drum washing machine according to one of the preceding claims, characterized in that the rotational speed of the washing drum (4) during the wetting phase is set such that a peripheral speed of at most 0.75 is found on the drum casing
Figure imgb0003
 , preferably 0.67
Figure imgb0004
 , results.
EP19870106336 1986-05-06 1987-05-02 Washing machine drum provided with means for wetting the laundry Expired - Lifetime EP0245721B1 (en)

Applications Claiming Priority (4)

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DE3615350 1986-05-06
DE3615350 1986-05-06
DE3712118 1987-04-10
DE19873712118 DE3712118A1 (en) 1986-05-06 1987-04-10 DRUM WASHING MACHINE

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EP0245721A1 true EP0245721A1 (en) 1987-11-19
EP0245721B1 EP0245721B1 (en) 1991-09-04

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ES (1) ES2023846B3 (en)
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DE3726613A1 (en) * 1987-08-11 1989-02-23 Miele & Cie WASHING MACHINE DRUM
DE3726651A1 (en) * 1987-08-11 1989-02-23 Miele & Cie DRUM WASHING MACHINE
EP0318761A1 (en) * 1987-12-04 1989-06-07 Bosch-Siemens HausgerÀ¤te GmbH Method for using a drum washing machine and machine to perform this method
EP0352439A2 (en) * 1988-07-26 1990-01-31 Bosch-Siemens HausgerÀ¤te GmbH Washing drum
EP0517058A1 (en) * 1991-05-31 1992-12-09 MERLONI ELETTRODOMESTICI S.p.A. Basket for laundry washing machines
EP0557572A1 (en) * 1992-02-25 1993-09-01 WASCHGERÄTE GmbH i.L. Washing machine drum
FR2713678A1 (en) * 1993-12-14 1995-06-16 Bosch Siemens Hausgeraete Device for feeding feed water and / or washing agent into a top-loading drum washing machine
FR2713677A1 (en) * 1993-12-14 1995-06-16 Bosch Siemens Hausgeraete Device for feeding feed water and / or washing agent into a drum washing machine which can be controlled automatically.
CN1066223C (en) * 1995-05-31 2001-05-23 Bsh博施及西门子家用器具有限公司 Device for adding water and/or detergent for casing side-fed drum washer
CN1069363C (en) * 1995-05-31 2001-08-08 Bsh博施及西门子家用器具有限公司 Device for adding water and/or detergent for autocontrolled drum washer
EP1174536A2 (en) * 2000-07-13 2002-01-23 FISHER &amp; PAYKEL LIMITED Perforation of laundry machine
EP1433888A1 (en) * 2002-12-26 2004-06-30 Lg Electronics Inc. Drum-type washing machine and lift unit thereof
WO2006097362A1 (en) * 2005-03-17 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Wetting process for the laundry inside a program-controlled washing machine
ES2276627A1 (en) * 2005-12-02 2007-06-16 Bsh Electrodomesticos España, S.A. A laundry drum
EP1816250A1 (en) * 2006-02-02 2007-08-08 Electrolux Home Products Corporation N.V. Improvement in the lifting ribs of the drum of a clothes washing machine
EP1873296A2 (en) * 2006-06-13 2008-01-02 IAR-SILTAL S.p.A. Laundry washing machine, in particular of the front-loading type
WO2008003594A1 (en) * 2006-07-06 2008-01-10 BSH Bosch und Siemens Hausgeräte GmbH Washing machine with hollow drivers
EP2309048A1 (en) 2009-10-06 2011-04-13 Miele & Cie. KG Drum for a washing machine
CN101705598B (en) * 2009-01-23 2011-08-31 南京乐金熊猫电器有限公司 Washing device
EP2700744A1 (en) * 2012-08-20 2014-02-26 Miele & Cie. KG Drum for a washing machine
DE102013104005A1 (en) * 2013-04-19 2014-10-23 Jensen Gmbh Washing process and clock washing system
US20140318190A1 (en) * 2013-04-30 2014-10-30 Lg Electronics Inc. Washing machine
EP3138946A1 (en) * 2015-09-04 2017-03-08 Lg Electronics Inc. Laundry treating apparatus

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DE3728940C2 (en) * 1987-08-29 1998-10-01 Miele & Cie Mantle-loading washer dryer
DE3803195C2 (en) * 1988-02-03 1994-08-18 Bosch Siemens Hausgeraete Driving scoop for a washing drum
DE3820409A1 (en) * 1988-06-15 1989-12-21 Bosch Siemens Hausgeraete Device for the circulation of washing or rinsing lye in a drum-type washing machine
ES2042054T3 (en) * 1988-11-14 1993-12-01 Miele & Cie. Gmbh & Co. WASHING PROCEDURE FOR A PROGRAM-CONTROLLED DRUM WASHER.
DE3933355A1 (en) * 1988-11-14 1990-05-17 Miele & Cie Washing program for drum type washing machine - with specific changes from high to slow speed in both directions
DE3913746C2 (en) * 1989-04-26 1995-08-17 Miele & Cie Drum washing machine
DE4310595A1 (en) * 1993-03-31 1994-10-06 Bosch Siemens Hausgeraete Washing machine with a reversing laundry drum
DE19859571A1 (en) * 1998-12-22 2000-06-29 Bsh Bosch Siemens Hausgeraete Laundry drum
DE10031037A1 (en) 2000-06-14 2001-12-20 Pharmagg Systemtechnik Gmbh Method for managing wet washing by varying peripheral speed of washer drum
DE102007036619B3 (en) 2007-08-02 2008-09-18 Miele & Cie. Kg Drum for washing machine, has suds container, in which drum is rotatably supported on horizontal or inclined axis, and drum has rear wall and casing is provided with holes
US8024947B2 (en) * 2008-01-11 2011-09-27 Bsh Home Appliances Corporation Front-loading washing machine having liquid distributing paddles
BE1029833B1 (en) 2021-10-11 2023-05-08 Miele & Cie Machine for washing and/or drying laundry and drum of such a machine

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DE3726613A1 (en) * 1987-08-11 1989-02-23 Miele & Cie WASHING MACHINE DRUM
DE3726651A1 (en) * 1987-08-11 1989-02-23 Miele & Cie DRUM WASHING MACHINE
EP0318761A1 (en) * 1987-12-04 1989-06-07 Bosch-Siemens HausgerÀ¤te GmbH Method for using a drum washing machine and machine to perform this method
EP0475462A1 (en) * 1987-12-04 1992-03-18 Bosch-Siemens HausgerÀ¤te GmbH Method for using a drum washing machine and washing machine to perform this method
EP0352439A2 (en) * 1988-07-26 1990-01-31 Bosch-Siemens HausgerÀ¤te GmbH Washing drum
EP0352439A3 (en) * 1988-07-26 1991-08-07 Bosch-Siemens HausgerÀ¤te GmbH Washing drum
EP0517058A1 (en) * 1991-05-31 1992-12-09 MERLONI ELETTRODOMESTICI S.p.A. Basket for laundry washing machines
EP0557572A1 (en) * 1992-02-25 1993-09-01 WASCHGERÄTE GmbH i.L. Washing machine drum
FR2713678A1 (en) * 1993-12-14 1995-06-16 Bosch Siemens Hausgeraete Device for feeding feed water and / or washing agent into a top-loading drum washing machine
FR2713677A1 (en) * 1993-12-14 1995-06-16 Bosch Siemens Hausgeraete Device for feeding feed water and / or washing agent into a drum washing machine which can be controlled automatically.
CN1066223C (en) * 1995-05-31 2001-05-23 Bsh博施及西门子家用器具有限公司 Device for adding water and/or detergent for casing side-fed drum washer
CN1069363C (en) * 1995-05-31 2001-08-08 Bsh博施及西门子家用器具有限公司 Device for adding water and/or detergent for autocontrolled drum washer
EP1174536A2 (en) * 2000-07-13 2002-01-23 FISHER &amp; PAYKEL LIMITED Perforation of laundry machine
EP1174536A3 (en) * 2000-07-13 2003-07-30 FISHER &amp; PAYKEL LIMITED Perforation of laundry machine
EP1433888A1 (en) * 2002-12-26 2004-06-30 Lg Electronics Inc. Drum-type washing machine and lift unit thereof
CN1294317C (en) * 2002-12-26 2007-01-10 Lg电子株式会社 Drum washing machine and its lifting unit
WO2006097362A1 (en) * 2005-03-17 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Wetting process for the laundry inside a program-controlled washing machine
ES2276627A1 (en) * 2005-12-02 2007-06-16 Bsh Electrodomesticos España, S.A. A laundry drum
US7997104B2 (en) 2005-12-02 2011-08-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Laundry drum
EP1816250A1 (en) * 2006-02-02 2007-08-08 Electrolux Home Products Corporation N.V. Improvement in the lifting ribs of the drum of a clothes washing machine
WO2007087887A1 (en) * 2006-02-02 2007-08-09 Electrolux Home Products Corporation N.V. Improvement in the lifting ribs of the drum of a clothes washing machine
US8336338B2 (en) 2006-02-02 2012-12-25 Electrolux Home Products Corporation N.V. Lifting ribs of the drum of a clothes washing machine
EP1873296A2 (en) * 2006-06-13 2008-01-02 IAR-SILTAL S.p.A. Laundry washing machine, in particular of the front-loading type
EP1873296A3 (en) * 2006-06-13 2008-01-09 IAR-SILTAL S.p.A. Laundry washing machine, in particular of the front-loading type
WO2008003594A1 (en) * 2006-07-06 2008-01-10 BSH Bosch und Siemens Hausgeräte GmbH Washing machine with hollow drivers
CN101705598B (en) * 2009-01-23 2011-08-31 南京乐金熊猫电器有限公司 Washing device
EP2309048A1 (en) 2009-10-06 2011-04-13 Miele & Cie. KG Drum for a washing machine
EP2700744A1 (en) * 2012-08-20 2014-02-26 Miele & Cie. KG Drum for a washing machine
DE102013104005A1 (en) * 2013-04-19 2014-10-23 Jensen Gmbh Washing process and clock washing system
DE102013104005B4 (en) * 2013-04-19 2017-04-06 Jensen Gmbh Washing process and clock washing system
US20140318190A1 (en) * 2013-04-30 2014-10-30 Lg Electronics Inc. Washing machine
EP2799611A1 (en) * 2013-04-30 2014-11-05 LG Electronics, Inc. Washing machine
CN104131438A (en) * 2013-04-30 2014-11-05 Lg电子株式会社 Washing machine
KR20140129781A (en) * 2013-04-30 2014-11-07 엘지전자 주식회사 A washing machine
US9347165B2 (en) 2013-04-30 2016-05-24 Lg Electronics Inc. Washing machine
KR102053143B1 (en) * 2013-04-30 2019-12-06 엘지전자 주식회사 A washing machine
EP3138946A1 (en) * 2015-09-04 2017-03-08 Lg Electronics Inc. Laundry treating apparatus
CN106498658A (en) * 2015-09-04 2017-03-15 Lg电子株式会社 Clothes treatment device

Also Published As

Publication number Publication date
DE3712118A1 (en) 1987-11-12
DE3772618D1 (en) 1991-10-10
HK102895A (en) 1995-06-30
GR3003283T3 (en) 1993-02-17
ES2023846B3 (en) 1992-02-16
EP0245721B1 (en) 1991-09-04

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