EP2462270B1 - Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine - Google Patents

Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine Download PDF

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Publication number
EP2462270B1
EP2462270B1 EP10737545A EP10737545A EP2462270B1 EP 2462270 B1 EP2462270 B1 EP 2462270B1 EP 10737545 A EP10737545 A EP 10737545A EP 10737545 A EP10737545 A EP 10737545A EP 2462270 B1 EP2462270 B1 EP 2462270B1
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EP
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Prior art keywords
tubular connecting
foam
connecting element
laundry treatment
treatment machine
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EP10737545A
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German (de)
French (fr)
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EP2462270A1 (en
Inventor
Andreas Hanau
Thomas Schneider
Ingo Schulze
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL10737545T priority Critical patent/PL2462270T3/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • 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
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/12—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid solely by gases, e.g. air or steam, introduced into the washing liquid

Definitions

  • the invention relates to a device for producing foam in a laundry treatment machine with a tub, in particular a washing machine or a washer-dryer, which comprises two interconnected tubular connecting elements.
  • the invention also relates to a method for using such a device and to a corresponding laundry treatment machine.
  • the pamphlets JP 31 62 895 A2 and EP 0 086 935 A2 each discloses a device in which air or gas is blown with pressure from below into a soap solution or wash liquor, which is located in the lower part of a laundry container. As a result, the soap solution forms foam, which rises and wets the laundry in the laundry container.
  • the DE 26 28 879 A1 discloses a laundry treating machine having an additional conduit leading from the bottom of the tub into the drum, wherein foam may be generated in the conduit via a pump which is then directed into the drum. This construction has the disadvantage that foam from below can flow back into the tub.
  • an object of the invention is to provide a further developed device for producing foam in a laundry treatment machine with a tub, in particular a washing machine or a washer-dryer, which comprises two interconnected tubular connecting elements.
  • the device according to the invention it is possible to wet the textiles in the inner drum of the laundry treatment machine with foam, and at the same time to ensure that the foam produced by the device according to the invention can not flow back into the tub or the wash liquor.
  • Each tubular connector may be a rigid or flexible connector, e.g. has an oval or circular cross-section.
  • a hose, a tube, a cylinder, a conduit or the like can be used in the device according to the invention.
  • a hose or a pipe is used.
  • the first tubular connector is attached at its one end near the lowest point of the tub and connected at its other end to the second tubular connector. Lye is preferably conducted through the first tubular connecting element to the second tubular connecting element, for which reason the former is e.g. at least partially and in particular lies with its first end below the Laugenapts.
  • the second tubular connector has first and second ends, the first end being connected to the first tubular connector and the second end of the second tubular connector preferably being directly connected to a sleeve, the sleeve having a gap between a door allows access to the tub, and seals the tub and to compensate for any movements of the Laugenbenzofters against a housing of the laundry treatment machine is a form-slack elastomer part, so that a direct transition from the second tubular connecting element is ensured in the inner drum of the laundry treatment device.
  • directing the foam directly into the inner drum makes it more visible to the customer or user, which plays a role in the acceptance of foam washing programs.
  • the second end may be higher than the first end.
  • a gas preferably air
  • the vent is located in the vicinity of the first end of the second tubular connecting element, i. in the vicinity of the transition between the first and second tubular connecting element.
  • the vent is preferably arranged so that it is always covered even at low levels in the tub with a sufficient amount of alkali.
  • the vent is in the simplest case a component which limits an outflow opening.
  • the vent may have one or more outlets spanning the outflow opening to more evenly distribute and / or direct the outflowing gas in a particular direction.
  • baffles, valves or slides are arranged in the first tubular connecting element, which ensure that the foam produced can not flow back into the tub.
  • the density difference between foam and brine can be used to ensure the transition of the foam in the inner drum, wherein the liquor in the second tubular connecting element is traversed from below with gas and the foam is discharged upward.
  • the vent is preferably made of porous material. If gas flows through this porous material, fine gas bubbles are generated depending on the material. This creates foam in the second tubular connector.
  • the amount of foam obtained can be adjusted by the geometric design of the device and / or by the modification of vent, compressor or pump.
  • the foam delivery rate and the height of the achievable foam column can be adjusted in the required range both by the geometric arrangement of the individual connecting elements and by the modification of the outflow and / or the compressor or the pump (eg 50 cm when supplying the generated foam through the washing machine cuff ).
  • FIG. 1 shows an embodiment of the device. It is a laundry treatment machine for use in a private household with tub 1 and washing drum or inner drum 2.
  • the wash liquor is 3a.
  • a first tubular connecting member 4 having a first diameter is attached.
  • a second tubular connecting member 5 having a first and a second end and a second diameter is arranged such that its first end is connected to the first tubular connecting element 4 and its second end is connected to the inner drum 2 of the washing machine.
  • a compressor 6, through which air can be injected into the vent 7 and thus into the second tubular connecting element.
  • the first tubular connecting element 4 has a smaller diameter than the second tubular connecting element 5.
  • the vent 7 which is arranged in the second tubular connecting element 5 in the vicinity of the first end of the second tubular connecting element 5, ie in the vicinity of the transition from the first tubular connecting element 4th to the second tubular connecting element 5, even at low levels in the tub 1 is always covered with a sufficient amount of alkali. If air is now blown into the liquor 3b through the outflow 7, foam 8 is formed near the lower region of the second tubular connecting element 5.
  • FIG. 2 shows a further embodiment of the device.
  • the two tubular connecting members 4, 5 do not have different diameters, but baffles 9 are arranged in the first tubular connecting member 4 so that the foam 8 produced in the second tubular connecting member 5 can not flow back into the tub 1.
  • the apparatus of each embodiment provides a way to easily generate foam which enters the inner drum of the laundry treating machine and thus can be used in a user-friendly manner for a "foam washing / foam washing" program.

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine mit einem Laugenbehälter, insbesondere einer Waschmaschine oder einem Waschtrockner, welche zwei miteinander verbundene röhrenförmige Verbindungselemente umfasst. Die Erfindung betrifft auch ein Verfahren zum Verwenden einer solchen Vorrichtung sowie eine entsprechende Wäschebehandlungsmaschine.The invention relates to a device for producing foam in a laundry treatment machine with a tub, in particular a washing machine or a washer-dryer, which comprises two interconnected tubular connecting elements. The invention also relates to a method for using such a device and to a corresponding laundry treatment machine.

Bisher wird in einer herkömmlichen Wäschebehandlungsmaschine nicht gezielt Schaum erzeugt. Ist aber ein Programm "Schaumwaschen/Schaumwäsche" in der Maschine vorhanden, ist es erforderlich Schaum zu erzeugen. Bisher werden in entsprechenden Fällen dafür die nachfolgend beschriebenen Vorrichtungen verwendet:

  • Die Druckschrift JP 72 75 678 A2 offenbart eine Vorrichtung zum Erzeugen von Schaum, welche aus einem Luftversorgungsrohr und einem nachbarschaftlich angeordneten Flüssigkeitsversorgungsrohr besteht, die beide in einer Schaumherstellungskammer enden, wobei die Schaumherstellungskammer nur an einem Ende geöffnet ist.
So far, foam is not specifically produced in a conventional laundry treatment machine. However, if a program "foam washing / foam washing" is present in the machine, it is necessary to produce foam. So far, the devices described below are used in corresponding cases for this purpose:
  • The publication JP 72 75 678 A2 discloses an apparatus for producing foam, which consists of an air supply tube and a juxtaposed liquid supply tube, both of which terminate in a foam manufacturing chamber, the foam production chamber being open at one end only.

Die Druckschriften JP 31 62 895 A2 und EP 0 086 935 A2 offenbaren jeweils eine Vorrichtung, bei der Luft bzw. Gas mit Druck von unten in eine Seifenlösung bzw. Waschlauge, welche sich im unteren Teil eines Wäschebehälters befindet, geblasen wird. Dadurch bildet die Seifenlösung Schaum, welcher aufsteigt und die Wäsche im Wäschebehälter benetzt.The pamphlets JP 31 62 895 A2 and EP 0 086 935 A2 each discloses a device in which air or gas is blown with pressure from below into a soap solution or wash liquor, which is located in the lower part of a laundry container. As a result, the soap solution forms foam, which rises and wets the laundry in the laundry container.

In den Druckschriften DE 10 2007 028 213 A1 ist ein Verfahren zur Behandlung von Wäsche mit Schaum beschrieben, bei dem der Schaum durch den Betrieb der Waschmaschine oder durch den Eintrag von Luft über eine Luft-Kompressorpumpe direkt in den Laugenbehälter erzeugt wird. Dadurch, dass die gesamte Waschlauge von Luft durchströmt wird, ist die Schaummenge und -Art nicht besonders gut steuerbar.In the pamphlets DE 10 2007 028 213 A1 A method for treating laundry with foam is described in which the foam is generated by the operation of the washing machine or by the introduction of air via an air compressor pump directly into the tub. The fact that the entire wash liquor is flowed through by air, the amount and type of foam is not very well controlled.

In DE 10 2007 033 492 A1 ist ein Verfahren zum Schaumwaschen offenbart, welches darin besteht, dass die Anwesenheit von Schaum zunächst detektiert wird, und anschließend der Schaum über die Drehzahl modifiziert oder beibehalten wird.In DE 10 2007 033 492 A1 there is disclosed a method of foam washing which consists in first detecting the presence of foam and then modifying or maintaining the foam over the speed.

Die DE 26 28 879 A1 offenbart eine Wäschebehandlungsmaschine mit einer zusätzlichen Leitung, die vom Boden des Laugenbehälters in die Trommel führt, wobei in der Leitung über eine Pumpe Schaum erzeugt werden kann, der dann in die Trommel geleitet wird. Dieser Aufbau hat den Nachteil dass Schaum von untem zurück in den Laugenbehälter fließen kann.The DE 26 28 879 A1 discloses a laundry treating machine having an additional conduit leading from the bottom of the tub into the drum, wherein foam may be generated in the conduit via a pump which is then directed into the drum. This construction has the disadvantage that foam from below can flow back into the tub.

Vor diesem Hintergrund besteht eine Aufgabe der Erfindung darin, eine weiterentwickelte Vorrichtung zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine mit einem Laugenbehälter, insbesondere einer Waschmaschine oder einem Waschtrockner, welche zwei miteinander verbundene röhrenförmige Verbindungselemente umfasst, anzugeben.Against this background, an object of the invention is to provide a further developed device for producing foam in a laundry treatment machine with a tub, in particular a washing machine or a washer-dryer, which comprises two interconnected tubular connecting elements.

Zur Lösung dieser Aufgabe angegeben werden eine Vorrichtung, ein Verfahren und eine Wäschebehandlungsmaschine. Bevorzugte Weiterbildungen sind in abhängigen Patentansprüchen oder der nachfolgenden Beschreibung aufgeführt.To solve this problem, an apparatus, a method and a laundry treating machine are disclosed. Preferred developments are listed in the dependent claims or the following description.

Gelöst wird die Aufgaben demnach durch eine Wäschebehandlungsmaschine mit einem Laugenbehälter und einer Vorrichtung zum Erzeugen von Schaum, welche die folgenden Komponenten aufweist:

  1. (a) ein erstes röhrenförmiges Verbindungselement mit einem ersten Durchmesser, welches in der Nähe eines tiefsten Punktes des Laugenbehälters angebracht ist,
  2. (b) ein zweites röhrenförmiges Verbindungselement mit einem ersten Ende und einem zweiten Ende und einem zweiten Durchmesser, welches über sein erstes Ende an das erste röhrenförmige Verbindungselement angeschlossen ist und über sein zweites Ende mit einer Innentrommel der Wäschebehandlungsmaschine verbunden ist,
  3. (c) einen Ausströmer, der sich im zweiten röhrenförmigen Verbindungselement in der Nähe des ersten Endes befindet,
wobei die Wäschebehandlungsmaschine dadurch gekennzeichnet ist, dass der zweite Durchmesser des zweiten röhrenförmigen Verbindungselements größer ist als der erste Durchmesser des ersten röhrenförmigen Verbindungselements.The objects are therefore achieved by a laundry treatment machine with a tub and a device for producing foam, which has the following components:
  1. (a) a first tubular connecting member having a first diameter, which is mounted near a lowest point of the tub,
  2. (b) a second tubular connecting member having a first end and a second end and a second diameter which is connected at its first end to the first tubular connecting member and connected via its second end to an inner drum of the laundry treating machine,
  3. (c) an air vent located in the second tubular connector near the first end,
wherein the laundry treating machine is characterized in that the second diameter of the second tubular connecting member is larger than the first diameter of the first tubular connecting member.

Durch die erfindungsgemäße Vorrichtung ist es möglich, die Textilien in der Innentrommel der Wäschebehandlungsmaschine mit Schaum zu benetzen, und gleichzeitig sicherzustellen, dass der mit der erfindungsgemäßen Vorrichtung erzeugte Schaum nicht in den Laugenbehälter bzw. die Waschlauge zurückströmen kann.By the device according to the invention it is possible to wet the textiles in the inner drum of the laundry treatment machine with foam, and at the same time to ensure that the foam produced by the device according to the invention can not flow back into the tub or the wash liquor.

Bei jedem röhrenförmigen Verbindungselement kann es sich um ein starres oder flexibles Verbindungselement handeln, welches z.B. einen ovalen oder kreisförmigen Querschnitt aufweist. Beispielsweise kann in der erfindungsgemäßen Vorrichtung ein Schlauch, eine Röhre, ein Zylinder, eine Leitung oder ähnliches eingesetzt werden. Vorzugsweise wird ein Schlauch oder ein Rohr verwendet.Each tubular connector may be a rigid or flexible connector, e.g. has an oval or circular cross-section. For example, in the device according to the invention, a hose, a tube, a cylinder, a conduit or the like can be used. Preferably, a hose or a pipe is used.

Das erste röhrenförmige Verbindungselement ist mit seinem einen Ende in der Nähe des tiefsten Punktes des Laugenbehälters angebracht und mit seinem anderen Ende mit dem zweiten röhrenförmigen Verbindungselement verbunden. Durch das erste röhrenförmige Verbindungselement wird bevorzugt Lauge zum zweiten röhrenförmigen Verbindungselement geleitet, weshalb ersteres z.B. zumindest teilweise und insbesondere mit seinem ersten Ende unterhalb des Laugenspiegels liegt.The first tubular connector is attached at its one end near the lowest point of the tub and connected at its other end to the second tubular connector. Lye is preferably conducted through the first tubular connecting element to the second tubular connecting element, for which reason the former is e.g. at least partially and in particular lies with its first end below the Laugenspiegels.

Das zweite röhrenförmige Verbindungselement weist ein erstes und ein zweites Ende auf, wobei das erste Ende an das erste röhrenförmige Verbindungselement angeschlossen ist und das zweite Ende des zweiten röhrenförmigen Verbindungselements vorzugsweise direkt an eine Manschette angeschlossen ist, wobei die Manschette einen Spalt zwischen einer Tür, welche einen Zugang zum Laugenbehälter ermöglicht, und dem Laugenbehälter abdichtet und zum Ausgleich eventueller Bewegungen des Laugenbehäfters gegen ein Gehäuse der Wäschebehandlungsmaschine ein formschlaffes Elastomerteil ist, so dass ein direkter Übergang vom zweiten röhrenförmigen Verbindungselement in die Innentrommel des Wäschebehandlungsgeräts gewährleistet ist. Es ist jedoch auch möglich, den Schaum in den Laugenbehälter zu entlassen, so dass er dann beispielsweise über die Trommellochung der Innentrommel oder über die Manschette zwischen Türöffnung und Innenbehälter in die Innentrommel eindringen kann. Wird jedoch der Schaum direkt in die Innentrommel geleitet, ist dies für den Kunden bzw. Benutzer besser sichtbar, was für die Akzeptanz von Schaumwaschprogrammen eine Rolle spielt. Beim zweiten röhrenförmigen Verbindungselement kann das zweite Ende weiter oben liegen als das erste Ende.The second tubular connector has first and second ends, the first end being connected to the first tubular connector and the second end of the second tubular connector preferably being directly connected to a sleeve, the sleeve having a gap between a door allows access to the tub, and seals the tub and to compensate for any movements of the Laugenbehäfters against a housing of the laundry treatment machine is a form-slack elastomer part, so that a direct transition from the second tubular connecting element is ensured in the inner drum of the laundry treatment device. However, it is also possible to dismiss the foam in the tub, so that it can then penetrate, for example via the drum hole of the inner drum or the cuff between the door opening and inner container into the inner drum. However, directing the foam directly into the inner drum makes it more visible to the customer or user, which plays a role in the acceptance of foam washing programs. In the second tubular connector, the second end may be higher than the first end.

Über den Ausströmer wird ein Gas, vorzugsweise Luft, in die Lauge im zweiten röhrenförmigen Verbindungselement eingeblasen. Dies geschieht beispielsweise durch einen Kompressor bzw. eine Pumpe. In der erfindungsgemäßen Vorrichtung ist der Ausströmer in der Nähe des ersten Endes des zweiten röhrenförmigen Verbindungselements angeordnet, d.h. in der Nähe des Übergangs zwischen erstem und zweitem röhrenförmigen Verbindungselement. Der Ausströmer ist vorzugsweise so angeordnet, dass er auch bei geringen Füllständen im Laugenbehälter immer mit einer ausreichenden Menge an Lauge bedeckt ist.Via the vent, a gas, preferably air, is injected into the liquor in the second tubular connecting element. This happens, for example, by a compressor or a pump. In the device according to the invention, the vent is located in the vicinity of the first end of the second tubular connecting element, i. in the vicinity of the transition between the first and second tubular connecting element. The vent is preferably arranged so that it is always covered even at low levels in the tub with a sufficient amount of alkali.

Der Ausströmer ist im einfachsten Fall ein Bauteil, welches eine Ausströmöffnung begrenzt. In weiterentwickelter Form kann der Ausströmer eine oder mehrere die Ausströmöffnung überspannende Leitflächen haben, um das ausströmende Gas gleichmäßiger zu verteilen und/oder es in eine bestimmte Richtung zu lenken.The vent is in the simplest case a component which limits an outflow opening. In a further developed form, the vent may have one or more outlets spanning the outflow opening to more evenly distribute and / or direct the outflowing gas in a particular direction.

In einer weiteren Ausführungsform der erfindungsgemäßen Vorrichtung sind Schikanen, Ventile oder Schieber im ersten röhrenförmigen Verbindungselement angeordnet, welche sicherstellen, dass der erzeugt Schaum nicht in den Laugenbehälter zurückströmen kann. Zusätzlich kann der Dichteunterschied zwischen Schaum und Lauge genutzt werden, um den Übergang des Schaums in die Innentrommel zu gewährleisten, wobei die Lauge im zweiten röhrenförmigen Verbindungselement von unten mit Gas durchströmt wird und der Schaum nach oben abgeführt wird.In a further embodiment of the device according to the invention, baffles, valves or slides are arranged in the first tubular connecting element, which ensure that the foam produced can not flow back into the tub. In addition, the density difference between foam and brine can be used to ensure the transition of the foam in the inner drum, wherein the liquor in the second tubular connecting element is traversed from below with gas and the foam is discharged upward.

Der Ausströmer ist vorzugsweise aus porösem Material hergestellt. Wird dieses poröse Material nun mit Gas durchströmt, werden abhängig vom Material feine Gasblasen erzeugt. Dadurch entsteht Schaum im zweiten röhrenförmigen Verbindungselement.The vent is preferably made of porous material. If gas flows through this porous material, fine gas bubbles are generated depending on the material. This creates foam in the second tubular connector.

Das verwendete Gas ist vorzugsweise ein "Inertgas", d.h. dass das Gas in Bezug auf die Behandlungsflüssigkeit und das zu behandelnde Material inert ist. Dadurch reagiert das Gas mit der Flüssigkeit oder dem Material nicht in unerwünschter Weise oder übt andere Einflüsse auf die Flüssigkeit oder das Material aus. Normalerweise wird als Gas Luft verwendet, obgleich auch ein solches Gas benutzt werden kann, das im strengen Sinne inert ist, beispielsweise Stickstoff und zwar dann, wenn ein besonderer Grund dafür besteht. Mit der Erfindung kann ein Verfahren durchgeführt werden zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine mit einem Laugenbehälter, welches eine Vorrichtung zum Erzeugen von Schaum verwendet, welche die folgenden Komponenten aufweist:

  1. (a) ein erstes röhrenförmiges Verbindungselement mit einem ersten Durchmesser, welches in der Nähe eines tiefsten Punktes des Laugenbehälters angebracht ist,
  2. (b) ein zweites röhrenförmiges Verbindungselement mit einem ersten Ende und einem zweiten Ende und einem zweiten Durchmesser, welches über sein erstes Ende an das erste röhrenförmige Verbindungselement angeschlossen ist und über sein zweites Ende mit einer Innentrommel der Wäschebehandlungsmaschine verbunden ist,
  3. (c) einen Ausströmer, der sich im zweiten röhrenförmigen Verbindungselement in der Nähe des ersten Endes befindet,
    und welches Verfahren folgende Schritte umfasst:
    1. (i) Durchströmen des Ausströmers mit Gas, so dass Schaum entsteht;
    2. (ii) Aufsteigen des Schaums im zweiten röhrenförmigen Verbindungselement, bis der Schaum in die innentrommel gelangt.
The gas used is preferably an "inert gas", ie the gas is inert with respect to the treatment liquid and the material to be treated. As a result, the gas does not undesirably react with the liquid or material or exerts any other influence on the liquid or material. Normally, air is used as the gas, although it is also possible to use such a gas which is strictly inert, for example nitrogen, when there is a particular reason. With the invention, a method can be carried out for producing foam in a laundry treating machine with a tub, which uses a device for producing foam, comprising the following components:
  1. (a) a first tubular connecting member having a first diameter, which is mounted near a lowest point of the tub,
  2. (b) a second tubular connecting member having a first end and a second end and a second diameter which is connected at its first end to the first tubular connecting member and connected via its second end to an inner drum of the laundry treating machine,
  3. (c) an air vent located in the second tubular connector near the first end,
    and which method comprises the following steps:
    1. (i) passing gas through the vaporizer to produce foam;
    2. (ii) rising the foam in the second tubular connector until the foam enters the inner drum.

Beim Verfahren kann die Menge des erzielten Schaums durch die geometrische Gestaltung der Vorrichtung und/oder durch die Modifikation von Ausströmer, Kompressor oder Pumpe eingestellt werden. Die Schaumförderleistung und die Höhe der erzielbaren Schaumsäule lassen sich sowohl durch die geometrische Anordnung der einzelnen Verbindungselemente als auch durch die Modifikation des Ausströmers und/oder des Kompressors bzw. der Pumpe im erforderlichen Bereich einstellen (z.B. 50 cm bei Zufuhr des erzeugten Schaums über die Waschmaschinenmanschette).In the method, the amount of foam obtained can be adjusted by the geometric design of the device and / or by the modification of vent, compressor or pump. The foam delivery rate and the height of the achievable foam column can be adjusted in the required range both by the geometric arrangement of the individual connecting elements and by the modification of the outflow and / or the compressor or the pump (eg 50 cm when supplying the generated foam through the washing machine cuff ).

Anhand der Figuren der beigefügten Zeichnung werden nachfolgend Ausführungsbeispiele der erfindungsgemäßen Vorrichtung genauer erläutert:

Figur 1
zeigt eine Vorrichtung zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine, wobei der zweite Durchmesser des zweiten röhrenförmigen Verbindungselements größer ist als der erste Durchmesser des ersten röhrenförmigen Verbindungselements,
Figur 2
zeigt eine Vorrichtung zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine, wobei im ersten röhrenförmigen Verbindungselement Schikanen angeordnet sind.
Reference to the figures of the accompanying drawings embodiments of the device according to the invention are explained in more detail below:
FIG. 1
shows a device for producing foam in a laundry treating machine, wherein the second diameter of the second tubular connecting element is greater than the first diameter of the first tubular connecting element,
FIG. 2
shows a device for producing foam in a laundry treating machine, wherein baffles are arranged in the first tubular connecting element.

Figur 1 zeigt eine Ausführungsform der Vorrichtung. Dabei handelt es sich um eine Wäschebehandlungsmaschine zur Nutzung in einem privaten Haushalt mit Laugenbehälter 1 und Waschtrommel bzw. Innentrommel 2. Im Laugenbehälter 1 befindet sich die Waschlauge 3a. In der Nähe des tiefsten Punktes des Laugenbehälters 1 wird ein erstes röhrenförmiges Verbindungselement 4 mit einem ersten Durchmesser angebracht. Daran anschließend ist ein zweites röhrenförmiges Verbindungselement 5 mit einem ersten und einem zweiten Ende und einem zweiten Durchmesser angeordnet und zwar so, dass sein erstes Ende an das erste röhrenförmige Verbindungselement 4 angeschlossen ist und sein zweites Ende mit der Innentrommel 2 der Waschmaschine verbunden ist. Des Weiteren ist ein Kompressor 6 vorhanden, durch den Luft in den Ausströmer 7 und damit in das zweite röhrenförmige Verbindungselement eingeblasen werden kann. In der in Figur 1 gezeigten Ausführungsform hat das erste röhrenförmige Verbindungselement 4 einen kleineren Durchmesser als das zweite röhrenförmige Verbindungselement 5. Im zweiten röhrenförmigen Verbindungselement 5 befindet sich ebenfalls Waschlauge 3b und darüber der durch den Ausströmer erzeugte Schaum 8. Durch die Lage des Übergangs zwischen dem zweiten röhrenförmigen Verbindungselement 5 mit größerem Durchmesser und dem ersten röhrenförmigen Verbindungselement 4 mit kleinerem Durchmesser wird sichergestellt, dass der Ausströmer 7, welcher im zweiten röhrenförmigen Verbindungselement 5 in der Nähe des ersten Endes des zweiten röhrenförmigen Verbindungselements 5 angeordnet ist, d.h. in der Nähe des Übergangs vom ersten röhrenförmigen Verbindungselement 4 zum zweiten röhrenförmigen Verbindungselement 5, auch bei geringen Füllständen im Laugenbehälter 1 immer mit einer ausreichenden Menge an Lauge bedeckt ist. Wird nun durch den Ausströmer 7 Luft in die Lauge 3b geblasen, entsteht nahe am unteren Bereich des zweiten röhrenförmigen Verbindungselements 5 Schaum 8. Aufgrund des großen Dichteunterschieds zwischen der Lauge 3b und dem Schaum 8 und der unterschiedlichen Durchmessers der beiden röhrenförmigen Verbindungselemente 4 und 5 strömt der entstehende Schaum 8 nicht durch das erste röhrenförmige Verbindungselement 4 zurück in den unteren Bereich des Laugenbehälters 1, sondern er steigt im zweiten röhrenförmigen Verbindungselement 5 auf, bis er über den Anschluss an der Manschette in die Innentrommel 2 gelangt. Durch die Verwendung eines ersten röhrenförmigen Verbindungselements 4 mit geringem Durchmesser im unteren Bereich wird zugleich die durch die Schaumerzeugungseinheit zusätzlich eingeführte tote Flotte so gering wie möglich gehalten. FIG. 1 shows an embodiment of the device. It is a laundry treatment machine for use in a private household with tub 1 and washing drum or inner drum 2. In the tub 1, the wash liquor is 3a. In the vicinity of the lowest point of the tub 1, a first tubular connecting member 4 having a first diameter is attached. Thereafter, a second tubular connecting member 5 having a first and a second end and a second diameter is arranged such that its first end is connected to the first tubular connecting element 4 and its second end is connected to the inner drum 2 of the washing machine. Furthermore, there is a compressor 6, through which air can be injected into the vent 7 and thus into the second tubular connecting element. In the in FIG. 1 In the embodiment shown, the first tubular connecting element 4 has a smaller diameter than the second tubular connecting element 5. In the second tubular connecting element 5 is also washing liquor 3b and above the foam 8 produced by the vent through the position of the transition between the second tubular connecting element 5 with larger diameter and the first tubular connecting member 4 of smaller diameter ensures that the vent 7, which is arranged in the second tubular connecting element 5 in the vicinity of the first end of the second tubular connecting element 5, ie in the vicinity of the transition from the first tubular connecting element 4th to the second tubular connecting element 5, even at low levels in the tub 1 is always covered with a sufficient amount of alkali. If air is now blown into the liquor 3b through the outflow 7, foam 8 is formed near the lower region of the second tubular connecting element 5. Due to the large density difference between the liquor 3b and the foam 8 and the different diameter of the two tubular connecting elements 4 and 5, flows the resulting foam 8 is not returned to the lower portion of the tub 1 through the first tubular connector 4, but rises in the second tubular connector 5 until it passes into the inner drum 2 via the port on the sleeve. By using a first tubular connecting element 4 with a small diameter in the lower region At the same time, the dead liquor additionally introduced by the foam generation unit was kept as low as possible.

Figur 2 zeigt eine weitere Ausführungsform der Vorrichtung. Hierbei weisen die zwei röhrenförmige Verbindungselemente 4, 5 keine unterschiedlichen Durchmesser auf, jedoch sind im ersten röhrenförmigen Verbindungselement 4 Schikanen 9 angeordnet, so dass der im zweiten röhrenförmigen Verbindungselement 5 erzeugte Schaum 8 nicht in den Laugenbehälter 1 zurückströmen kann. FIG. 2 shows a further embodiment of the device. Here, the two tubular connecting members 4, 5 do not have different diameters, but baffles 9 are arranged in the first tubular connecting member 4 so that the foam 8 produced in the second tubular connecting member 5 can not flow back into the tub 1.

Die Vorrichtung jeder Ausführungsform stellt eine Möglichkeit dar, um auf eine einfache Art und Weise Schaum zu erzeugen, welcher in die Innentrommel der Wäschebehandlungsmaschine gelangt und somit für ein Programm "Schaumwaschen/Schaumwäsche" benutzerfreundlich genutzt werden kann.The apparatus of each embodiment provides a way to easily generate foam which enters the inner drum of the laundry treating machine and thus can be used in a user-friendly manner for a "foam washing / foam washing" program.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Laugenbehältertub
22
Innentrommelinner drum
3a3a
Waschlaugesuds
3b3b
Waschlaugesuds
44
erstes röhrenförmiges Verbindungselementfirst tubular connecting element
55
zweites röhrenförmiges Verbindungselementsecond tubular connecting element
66
Kompressorcompressor
77
Ausströmervent
88th
Schaumfoam
99
Schikanechicane

Claims (5)

  1. Laundry treatment machine with a solution container (1) and a device for producing foam (8), which comprises the following components:
    (a) a first tubular connecting element (4) with a first diameter, which is mounted in the vicinity of a deepest point of the solution container (1),
    (b) a second tubular connecting element (5) with a first end and a second end and a second diameter, which is connected by way of its first end with the first tubular connecting element (4) and by way of a second end with an inner drum (2) of the laundry treatment machine, and
    (c) an outflow means (7) which is disposed in the second tubular connecting element (5) in the vicinity of the first end,
    characterised in that the second diameter of the second tubular connecting element (5) is larger than the first diameter of the first tubular connecting element (4).
  2. Laundry treatment machine according to claim 1, characterised in that chicanes (9) or slides are arranged in the first tubular connecting element (4).
  3. Laundry treatment machine according to one of the preceding claims, characterised in that the outflow means (7) consists of a porous material which produces bubbles when flowed through by gas.
  4. Laundry treatment machine according to any one of the preceding claims, characterised in that air can be blown into the second tubular connecting element (5) through the outflow means (7).
  5. Laundry treatment machine according to any one of the preceding claims, characterised in that the second end of the second tubular connecting element (5) is directly connected with the inner drum (2) by way of a sleeve.
EP10737545A 2009-08-04 2010-07-22 Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine Active EP2462270B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10737545T PL2462270T3 (en) 2009-08-04 2010-07-22 Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028197A DE102009028197A1 (en) 2009-08-04 2009-08-04 Apparatus for producing foam in a laundry treating machine, method for its use and laundry treating machine
PCT/EP2010/060610 WO2011015457A1 (en) 2009-08-04 2010-07-22 Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine

Publications (2)

Publication Number Publication Date
EP2462270A1 EP2462270A1 (en) 2012-06-13
EP2462270B1 true EP2462270B1 (en) 2013-03-27

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Application Number Title Priority Date Filing Date
EP10737545A Active EP2462270B1 (en) 2009-08-04 2010-07-22 Device for generating foam in a laundry treatment machine, method for using same and laundry treatment machine

Country Status (6)

Country Link
EP (1) EP2462270B1 (en)
CN (1) CN102471971B (en)
DE (1) DE102009028197A1 (en)
EA (1) EA019632B1 (en)
PL (1) PL2462270T3 (en)
WO (1) WO2011015457A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017155278A1 (en) * 2016-03-08 2017-09-14 엘지전자 주식회사 Laundry handling apparatus and control method therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT344123B (en) * 1975-07-02 1978-07-10 Henkel Kgaa METHOD AND DEVICE FOR WASHING TEXTILES
JPS58149372A (en) 1982-02-23 1983-09-05 皆川　基 Foam washing method
JPH03162895A (en) 1990-11-02 1991-07-12 Matsushita Electric Ind Co Ltd Washing machine
JP3148508B2 (en) 1994-04-06 2001-03-19 ユシロ化学工業株式会社 Foam maker and small foam washer using the same
KR100765277B1 (en) * 2005-01-10 2007-10-09 엘지전자 주식회사 drum type washer
KR101287532B1 (en) * 2007-04-11 2013-07-18 삼성전자주식회사 Drum type washing machine
DE102007028213A1 (en) * 2007-06-20 2008-12-24 BSH Bosch und Siemens Hausgeräte GmbH Washing machine and method of treating laundry with foam
DE102007033492A1 (en) * 2007-07-18 2009-01-22 BSH Bosch und Siemens Hausgeräte GmbH Process for controlling foam production in a washing machine and washing machine suitable for this purpose

Also Published As

Publication number Publication date
DE102009028197A1 (en) 2011-02-17
EA201270234A1 (en) 2012-09-28
CN102471971A (en) 2012-05-23
EP2462270A1 (en) 2012-06-13
PL2462270T3 (en) 2013-08-30
CN102471971B (en) 2014-06-04
WO2011015457A1 (en) 2011-02-10
EA019632B1 (en) 2014-05-30

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