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EP2038465A1 - Method for introducing detergents and associated washing machine - Google Patents

Method for introducing detergents and associated washing machine

Info

Publication number
EP2038465A1
EP2038465A1 EP07729920A EP07729920A EP2038465A1 EP 2038465 A1 EP2038465 A1 EP 2038465A1 EP 07729920 A EP07729920 A EP 07729920A EP 07729920 A EP07729920 A EP 07729920A EP 2038465 A1 EP2038465 A1 EP 2038465A1
Authority
EP
European Patent Office
Prior art keywords
detergent
rotation
drum
liquid mixture
preferred direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07729920A
Other languages
German (de)
French (fr)
Other versions
EP2038465B1 (en
Inventor
Edwin Bolduan
Wyneken Fimmen
Horst Wiemer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2038465A1 publication Critical patent/EP2038465A1/en
Application granted granted Critical
Publication of EP2038465B1 publication Critical patent/EP2038465B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal axis
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the present invention is based on a method for introducing detergents in program-controlled washing machines by means of a detergent-liquid mixture flowing onto the preferably cylindrical and apertured drum casing of a laundry drum rotatably mounted in a tub about an at least approximately horizontal axis.
  • Such a method is apparent from DE 43 42 627 C2 or DE 43 42 626 C2. It can be carried out with a washing machine which has a detergent dispenser which can be controlled with regard to the dispensing of detergent stored in it and a detergent supply line and a drive motor for the laundry drum which can be controlled with respect to its direction of rotation.
  • the term detergent is here and hereinafter used in a simplified manner for all types of washing, care and rinsing agents that are commonly used in washing machines.
  • the aspiration of the washing machine manufacturers is to use the detergents used for the washing process as effectively as possible and to avoid losses. Losses can be caused, for example, by the fact that undissolved detergent enters the drain line on the tub, is no longer dissolved and thus remains ineffective for the washing process.
  • Umpumpsysteme in use for detergent recycling in the tub (eg DE 37 04 079 A1 and DE 35 40 741 A1).
  • a circulation pump By means of a circulation pump, the free liquor is pumped out of the drainage point from the lowest point of the tub and transported to the upper area of the tub. It thus takes place a cycle of the wash liquor, the detergent is dissolved by the constant movement in the fleet.
  • solutions are proposed to close the drain pipe to the lye or circulating pump during the washing process.
  • the locking mechanism prevents unresolved detergent from settling in the drain port and thus is lost during the washing process.
  • DE 100 65 404 A1 is cited. It is proposed to close the opening to the drain line by a buoyant body which is pressed against an annular projection in the drain opening of the tub. To improve the sealing effect of the buoyancy body is coated with rubber or with an elastic plastic. The buoyancy of the closure body is generated by the standing in the supply line to the return water column.
  • a return tank is arranged, in which there is a standing above the liquor level of the freshly soaked detergent-water mixture water column and thus has the necessary to produce the force acting on the buoyant pressure level. About the return tank, the spent liquor is pumped out of the tub.
  • the two above-described solutions have the common disadvantage that the washing machines are to equip to avoid or reduce detergent losses with expensive additional devices. These additional devices make such washing machines not inconsiderably expensive.
  • Umpumpenclar is also disadvantageous that additional energy must be expended when operating the washing machine.
  • the invention has for its object to provide for the reduction of detergent losses a method that can be implemented with very little material cost and requires no additional energy expenditure when operating the washing machine.
  • the detergent-liquid mixture flows during a drive of the laundry drum in the preferred direction of rotation, the detergent-liquid mixture in a jet against the moving drum shell, that the jet impinges at a shallow angle on a portion of the drum shell, which is in the upper quarter of its cylindrical shape.
  • the drum is moved counter to the direction of flow of the introduced detergent-liquid mixture in a preferred direction of rotation.
  • a variant is to be preferred in which the down-flowing detergent-liquid mixture is kept away from the drain opening as long as possible.
  • the dissolution of the detergent can be significantly improved without additional effort.
  • a particularly good effect can be achieved with the method if the surface of the laundry drum has a swirl-enhancing surface, in particular has a structured jacket surface. This allows the detergent-liquid mixture with rotating drum long in the upper area, so far away from the drain opening, are kept.
  • the method can be implemented with minimal effort because it is essentially characterized by a pure software solution. For the practical implementation of the method, no additional modules or fixtures are required.
  • the method is applicable to washing machines in which the detergent-liquid mixture is not centrally directed from the top of the drum shell, and can be retrofitted by reprogramming or replacement of the program block.
  • the detergent-liquid mixture flows approximately over the entire depth of the drum distributed on the drum shell.
  • the incoming liquid flows more evenly over the drum shell, which promotes the dissolution of the detergent.
  • the uniform distribution also causes more mixture can pass through the openings in the drum shell into the interior of the drum during the feeding.
  • the laundry is thereby wetted faster.
  • the wetting of the laundry can be further improved in that the openings in the drum shell in the preferred direction of rotation have a higher passability.
  • the amount of the liquid impinging on the laundry material through the openings in the drum casing during the feeding phase is controllable, within limits, by means of control of the drum speed.
  • the method according to the invention thus offers an additional possibility of designing the washing programs.
  • Fig. 1 shows a washing machine in perspective
  • Fig. 2 is a detail view of the upper portion of the drum shell.
  • a washing machine 1 is shown in perspective from the front.
  • the representation simplistic contains only the important for the function of the method according to the invention components.
  • the tub 3 and the therein about a horizontal axis 14 rotatable laundry drum 4 have a feed opening, which can be closed by means of a door removed here.
  • the detergent dispenser is arranged in the upper housing area next to the control panel 1.
  • her horizontally forward pull-out drawer 2 the required detergent is deposited.
  • the drawer 2 is divided into a plurality of chambers, which can be flushed programmatically by means of fresh water, which is supplied from an external water supply system.
  • the bottom of the dispenser opens into an outlet nozzle for the detergent supply line 7.
  • the flow direction of the detergent-liquid mixture is indicated by arrows 6.
  • a drain opening 10 is provided at the lowest point of the tub 3, which is connected via a connected line with the drain pump 1 1.
  • the detergent-liquid mixture is distributed over the width of the drum shell 13 (FIG. 2) introduced.
  • the drum shell 13 Due to manufacturing raised raised webs (not shown), which prevent the incoming detergent-liquid mixture flows through the sides.
  • the movement of the drum shell 13 is due to the preferential direction of rotation 8 of the laundry drum 4 of the flow direction 12 of the incoming detergent-liquid mixture directed against the liquid jet 12 from above at a shallow angle.
  • the introduction of the detergent liquid mixture takes place in a region of the tub within the upper quarter of the drum cylinder.
  • the through-flow openings 9 in the drum casing 13 are formed by gill-like forms in the form of a half-cone (see Fig. 2). This shape causes on the one hand a delayed drainage of the detergent-liquid mixture from the drum shell 13. On the other hand, by the thus-shaped openings 9 in the direction of rotation 8 of the drum 4 directed to a greater extent liquid in the interior of the drum. The moistening of the laundry is accelerated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detergent Compositions (AREA)

Abstract

A method and washing machine that drives a cylindrical drum body, having openings and rotatably supported about an approximately horizontal axis in a tub, in a preferred direction of rotation, and that flows a detergent-liquid mixture in a stream onto an area of an upper quandrant of the cylindrical drum at an oblique angle against the preferred direction of rotation.

Description

Verfahren zum Einbringen von Waschmitteln und Waschmaschine dafür Method for introducing detergents and washing machine therefor

Die vorliegende Erfindung geht aus von einem Verfahren zum Einbringen von Waschmitteln bei programmgesteuerten Waschmaschinen durch ein auf den vorzugsweise zylindrischen und mit Öffnungen versehenen Trommelmantel einer in einem Laugenbehälter um eine wenigstens annähernd waagerechte Achse drehbar gelagerten Wäschetrommel strömendes Waschmittel-Flüssigkeits-Gemisch.The present invention is based on a method for introducing detergents in program-controlled washing machines by means of a detergent-liquid mixture flowing onto the preferably cylindrical and apertured drum casing of a laundry drum rotatably mounted in a tub about an at least approximately horizontal axis.

Ein solches Verfahren geht hervor aus der DE 43 42 627 C2 oder der DE 43 42 626 C2. Es ist mit einer Waschmaschine durchführbar, die eine hinsichtlich der Ausgabe von in ihr zwischengelagertem Waschmittel steuerbaren Waschmitteleinspüleinrichtung und eine Waschmittelzuführungsleitung sowie einen hinsichtlich seiner Drehrichtung steuerbaren Antriebsmotor für die Wäschetrommel aufweist. Der Begriff Waschmittel wird hier und im Folgenden vereinfachend für alle Arten von Wasch-, Pflege- und Spülmitteln verwendet, die für gewöhnlich bei Waschmaschinen zum Einsatz kommen.Such a method is apparent from DE 43 42 627 C2 or DE 43 42 626 C2. It can be carried out with a washing machine which has a detergent dispenser which can be controlled with regard to the dispensing of detergent stored in it and a detergent supply line and a drive motor for the laundry drum which can be controlled with respect to its direction of rotation. The term detergent is here and hereinafter used in a simplified manner for all types of washing, care and rinsing agents that are commonly used in washing machines.

Bei Waschmaschinen der in Rede stehenden Art werden die für ein Waschprogramm erforderlichen Waschmittel in einer Schublade der Waschmitteleinspüleinrichtung deponiert. Zur Aufnahme von unterschiedlichen Arten und Mengen von Waschmitteln sind in der Schublade zumeist mehrere Kammern vorhanden, die während der einzelnen Waschprogrammphasen mittels eines steuerbaren Wasserstrahls ausgespült werden. Über eine Einspülleitung fließt das Wasser-Waschmittel-Gemisch in den Laugenbehälter. Nach dem Waschgang wird die Lauge abgepumpt. Dazu ist an der tiefsten Stelle des Laugenbehälters eine Auslassöffnung vorgesehen mit einem Stutzen zum Anschluss der Abpumpleitung.In washing machines of the type in question, the detergent required for a washing program are deposited in a drawer of Detergent Waschmitteleinrichtung. To accommodate different types and quantities of detergents, several chambers are usually present in the drawer, which are flushed out during the individual wash program phases by means of a controllable water jet. About a Einspülleitung the water-detergent mixture flows into the tub. After the wash, the liquor is pumped out. For this purpose, an outlet opening is provided at the lowest point of the tub with a nozzle for connection of the pumping line.

Das Bestreben der Waschmaschinenhersteller geht dahin, die für den Waschprozess eingesetzten Waschmittel möglichst effektiv einzusetzen und Verluste zu vermeiden. Verluste können z.B. dadurch entstehen, dass ungelöstes Waschmittel in die Abpumpleitung am Laugenbehälter gelangt, nicht mehr aufgelöst wird und somit für den Waschprozess unwirksam bleibt. Um derartigen Waschmittelverlusten entgegenzuwirken, sind bei bekannten Waschmaschinen Umpumpsysteme im Einsatz zur Waschmittelrückführung in den Laugenbehälter (z.B. DE 37 04 079 A1 und DE 35 40 741 A1 ). Mittels einer Umwälzpumpe wird die freie Flotte über den Ablaufstutzen vom tiefsten Punkt des Laugenbehälters abgepumpt und in den oberen Bereich des Laugenbehälters befördert. Es findet somit ein Kreislauf der Waschflotte statt, das Waschmittel wird durch die ständige Bewegung in der Flotte gelöst.The aspiration of the washing machine manufacturers is to use the detergents used for the washing process as effectively as possible and to avoid losses. Losses can be caused, for example, by the fact that undissolved detergent enters the drain line on the tub, is no longer dissolved and thus remains ineffective for the washing process. To counteract such detergent losses are in known washing machines Umpumpsysteme in use for detergent recycling in the tub (eg DE 37 04 079 A1 and DE 35 40 741 A1). By means of a circulation pump, the free liquor is pumped out of the drainage point from the lowest point of the tub and transported to the upper area of the tub. It thus takes place a cycle of the wash liquor, the detergent is dissolved by the constant movement in the fleet.

Ein anderer Ansatz den Waschmittelverlusten entgegenzuwirken besteht darin, das Volumen der für den Waschprozess unwirksamen Flotte radikal zu reduzieren. In verschiedenen Ausführungsformen werden Lösungen vorgeschlagen, den Ablaufstutzen zur Laugenoder Umwälzpumpe während des Waschvorgangs zu verschließen. Mit dem Verschlussmechanismus wird verhindert, dass sich ungelöstes Waschmittel im Ablaufstutzen absetzen kann und somit für den Waschprozess verloren geht.Another approach to counteracting detergent losses is to radically reduce the volume of the ineffective liquor fleet. In various embodiments, solutions are proposed to close the drain pipe to the lye or circulating pump during the washing process. The locking mechanism prevents unresolved detergent from settling in the drain port and thus is lost during the washing process.

Als Beispiel einer solchen Lösung wird die DE 100 65 404 A1 angeführt. Darin wird vorgeschlagen, die Öffnung zur Abflussleitung durch einen Auftriebskörper zu verschließen, der gegen einen ringförmigen Vorsprung in der Ablauföffnung des Laugenbehälters gedrückt wird. Zur Verbesserung der Dichtwirkung ist der Auftriebskörper mit Gummi oder mit einem elastischen Kunststoff beschichtet. Der Auftrieb des Verschlusskörpers wird durch die in der Zuleitung zum Rücklaufbehälter stehende Wassersäule erzeugt. Im oberen Bereich der Waschmaschine ist ein Rücklaufbehälter angeordnet, in dem eine über dem Laugenniveau des frisch eingespülten Waschmittel-Wasser-Gemisches stehende Wassersäule steht und damit die zur Erzeugung des auf den Auftriebskörper wirkenden Anpressdrucks notwendige Höhe aufweist. Über den Rücklaufbehälter wird die verbrauchte Lauge aus dem Laugenbehälter abgepumpt.As an example of such a solution, DE 100 65 404 A1 is cited. It is proposed to close the opening to the drain line by a buoyant body which is pressed against an annular projection in the drain opening of the tub. To improve the sealing effect of the buoyancy body is coated with rubber or with an elastic plastic. The buoyancy of the closure body is generated by the standing in the supply line to the return water column. In the upper area of the washing machine, a return tank is arranged, in which there is a standing above the liquor level of the freshly soaked detergent-water mixture water column and thus has the necessary to produce the force acting on the buoyant pressure level. About the return tank, the spent liquor is pumped out of the tub.

Den beiden vorbeschriebenen Lösungen ist der Nachteil gemeinsam, dass die Waschmaschinen zum Vermeiden bzw. zur Verringerung von Waschmittelverlusten mit aufwendigen zusätzlichen Vorrichtungen auszurüsten sind. Durch diese zusätzlichen Vorrichtungen werden solche Waschmaschinen nicht unerheblich verteuert. Beim erstgenannten Um- pumpverfahren ist weiterhin nachteilig, dass beim Betreiben der Waschmaschine zusätzliche Energie aufgewendet werden muss. Der Erfindung liegt die Aufgabe zugrunde, zur Minderung von Waschmittelverlusten ein Verfahren anzugeben, das mit sehr geringem materiellen Aufwand realisierbar ist und beim Betreiben der Waschmaschine keinen zusätzlichen Energieaufwand erfordert.The two above-described solutions have the common disadvantage that the washing machines are to equip to avoid or reduce detergent losses with expensive additional devices. These additional devices make such washing machines not inconsiderably expensive. In the former Umpumpenverfahren is also disadvantageous that additional energy must be expended when operating the washing machine. The invention has for its object to provide for the reduction of detergent losses a method that can be implemented with very little material cost and requires no additional energy expenditure when operating the washing machine.

Erfindungsgemäß wird die Aufgabe durch die im kennzeichnenden Teil des Patentanspruchs 1 genannten Merkmale gelöst. Außerdem wird eine diese Aufgabe lösende Waschmaschine zur Durchführung des Verfahrens im Anspruch 6 angegeben. Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten, deren Merkmale einzeln oder in beliebiger Kombination miteinander oder mit den Merkmalen des Anspruchs 1 bzw. 6 angewendet werden können.According to the invention the object is achieved by the features mentioned in the characterizing part of patent claim 1. In addition, a task solving washing machine for performing the method in claim 6 is given. Further advantageous embodiments of the invention are contained in the subclaims, whose features can be used individually or in any combination with each other or with the features of claim 1 or 6.

Nach Maßgabe der Erfindung strömt während eines Antriebs der Wäschetrommel in Vorzugsdrehrichtung das Waschmittel-Flüssigkeits-Gemisch in einem Strahl so gegen den bewegten Trommelmantel, dass der Strahl in einem flachen Winkel auf einen Bereich des Trommelmantels auftrifft, der im oberen Viertel seiner Zylinderform liegt. Die Trommel wird entgegen der Fließrichtung des eingeleiteten Waschmittel-Flüssigkeits-Gemisches in einer Vorzugsdrehrichtung bewegt. Außerdem ist eine Variante zu bevorzugen, in der das herab fließende Waschmittel-Flüssigkeits-Gemisch von der Ablauföffnung möglichst lange fern gehalten wird.According to the invention flows during a drive of the laundry drum in the preferred direction of rotation, the detergent-liquid mixture in a jet against the moving drum shell, that the jet impinges at a shallow angle on a portion of the drum shell, which is in the upper quarter of its cylindrical shape. The drum is moved counter to the direction of flow of the introduced detergent-liquid mixture in a preferred direction of rotation. In addition, a variant is to be preferred in which the down-flowing detergent-liquid mixture is kept away from the drain opening as long as possible.

Es zeigt sich nun, dass durch diese einfache Maßnahme das Auflösen des Waschmittels ohne zusätzlichen Aufwand signifikant verbessert werden kann. Eine besonders gute Wirkung ist mit dem Verfahren erzielbar, wenn die Oberfläche der Wäschetrommel eine die Verwirbelung verstärkende Oberfläche aufweist, insbesondere eine strukturierte Mantelfläche hat. Dadurch kann das Waschmittel-Flüssigkeits-Gemisch bei drehender Trommel lange im oberen Bereich, also von der Ablauföffnung fern, gehalten werden.It now turns out that by this simple measure, the dissolution of the detergent can be significantly improved without additional effort. A particularly good effect can be achieved with the method if the surface of the laundry drum has a swirl-enhancing surface, in particular has a structured jacket surface. This allows the detergent-liquid mixture with rotating drum long in the upper area, so far away from the drain opening, are kept.

Das Verfahren ist in mit geringstem Aufwand realisierbar, weil es im Wesentlichen durch eine reine Softwarelösung gekennzeichnet ist. Für die praktische Umsetzung des Verfahrens sind keine zusätzlichen Baugruppen oder Einbauteile erforderlich. Das Verfahren ist für Waschmaschinen anwendbar, in denen das Waschmittel-Flüssigkeits-Gemisch nicht zentrisch von oben auf den Trommelmantel geleitet wird, und kann durch Umprogrammieren oder Auswechseln des Programmbausteins nachgerüstet werden. - A -The method can be implemented with minimal effort because it is essentially characterized by a pure software solution. For the practical implementation of the method, no additional modules or fixtures are required. The method is applicable to washing machines in which the detergent-liquid mixture is not centrally directed from the top of the drum shell, and can be retrofitted by reprogramming or replacement of the program block. - A -

In Ausgestaltung der Erfindung strömt das Waschmittel-Flüssigkeits-Gemisch annähernd über die gesamte Tiefe der Trommel verteilt auf den Trommelmantel. Die einlaufende Flüssigkeit fließt gleichmäßiger über den Trommelmantel, was das Lösen des Waschmittels begünstigt. Die gleichmäßige Verteilung bewirkt auch, dass bereits während der Zuführung mehr Gemisch durch die Öffnungen im Trommelmantel ins Trommelinnere gelangen kann. Das Waschguts wird dadurch beschleunigt benetzt. Das Benetzen des Waschguts kann dadurch weiterhin verbessert werden, dass die Öffnungen im Trommelmantel in der Vorzugsdrehrichtung eine höhere Durchlassfähigkeit aufweisen.In an embodiment of the invention, the detergent-liquid mixture flows approximately over the entire depth of the drum distributed on the drum shell. The incoming liquid flows more evenly over the drum shell, which promotes the dissolution of the detergent. The uniform distribution also causes more mixture can pass through the openings in the drum shell into the interior of the drum during the feeding. The laundry is thereby wetted faster. The wetting of the laundry can be further improved in that the openings in the drum shell in the preferred direction of rotation have a higher passability.

Die Menge der über die Öffnungen im Trommelmantel während der Zuführungsphase auf das Waschgut treffenden Flüssigkeit ist - in Grenzen - mittels Regelung der Trommeldrehzahl steuerbar. Das erfindungsgemäße Verfahren bietet damit eine zusätzliche Möglichkeit die Waschprogramme zu gestalten.The amount of the liquid impinging on the laundry material through the openings in the drum casing during the feeding phase is controllable, within limits, by means of control of the drum speed. The method according to the invention thus offers an additional possibility of designing the washing programs.

Anhand der nachstehend aufgeführten Zeichnungen werden das erfindungsgemäße Verfahren und Ausführungsbeispiele dazu erläutert. Es zeigenBased on the drawings listed below, the inventive method and embodiments are explained. Show it

Fig. 1 eine Waschmaschine in perspektivischer Darstellung undFig. 1 shows a washing machine in perspective and

Fig. 2 eine Detailansicht des oberen Bereiches des Trommelmantels.Fig. 2 is a detail view of the upper portion of the drum shell.

In Fig. 1 ist eine Waschmaschine 1 perspektivisch von vorn dargestellt. Die Darstellung enthält vereinfachend nur die für die Funktion des erfindungsgemäßen Verfahrens bedeutenden Bauteile.In Fig. 1, a washing machine 1 is shown in perspective from the front. The representation simplistic contains only the important for the function of the method according to the invention components.

Der Laugenbehälter 3 und die darin um eine waagerechte Achse 14 drehbare Wäschetrommel 4 weisen eine Beschickungsöffnung auf, die mittels einer hier entfernten Tür verschließbar ist. Im oberen Gehäusebereich ist neben der Bedienblende 1 die Waschmittel- Einspülvorrichtung angeordnet. In ihrer waagerecht nach vorn herausziehbaren Schublade 2 werden die benötigten Waschmittel deponiert. Zur Aufnahme verschiedener Waschmittel ist die Schublade 2 in mehrere Kammern unterteilt, die mittels Frischwasser programmgesteuert ausgespült werden können, das von einem externen Wasserversorgungssystem zugeführt wird. Der Boden der Einspülvorrichtung mündet in einem Auslaufstutzen für die Waschmittelzuführungsleitung 7. In der Zeichnung ist die Flussrichtung des Waschmittel-Flüssigkeits- Gemisches durch Pfeile 6 angedeutet. Zum Abpumpen der Waschlauge ist an der tiefsten Stelle des Laugenbehälters 3 eine Abflussöffnung 10 vorgesehen, die über eine angeschlossene Leitung mit der Laugenpumpe 1 1 verbunden ist.The tub 3 and the therein about a horizontal axis 14 rotatable laundry drum 4 have a feed opening, which can be closed by means of a door removed here. In the upper housing area next to the control panel 1, the detergent dispenser is arranged. In her horizontally forward pull-out drawer 2, the required detergent is deposited. To accommodate various detergents, the drawer 2 is divided into a plurality of chambers, which can be flushed programmatically by means of fresh water, which is supplied from an external water supply system. The bottom of the dispenser opens into an outlet nozzle for the detergent supply line 7. In the drawing, the flow direction of the detergent-liquid mixture is indicated by arrows 6. To drain off the wash liquor, a drain opening 10 is provided at the lowest point of the tub 3, which is connected via a connected line with the drain pump 1 1.

Über einen Flüssigkeitsverteiler 5, der achsparallel zur Trommeldrehachse 14 außermittig auf dem Laugenbehälter 3 befestigt ist und eine Reihe von Durchlassöffnungen aufweist, wird das Waschmittel-Flüssigkeits-Gemisch über die Breite des Trommelmantels 13 (Fig. 2) verteilt eingeleitet. An den beiden Rändern zur Rückwand und zur Stirnseite weist der Trommelmantel 13 fertigungsbedingt erhabene Randstege auf (nicht dargestellt), die verhindern, dass das einlaufende Waschmittel-Flüssigkeits-Gemisch über die Seiten abfließt. Der Flüssigkeitsstrahl 12 trifft von oben in einem flachen Winkel α auf die Mantelfläche 13 der Wäschetrommel 4. Die Bewegung des Trommelmantels 13 ist infolge der Vorzugsdrehrichtung 8 der Wäschetrommel 4 der Strömungsrichtung 12 des einlaufenden Waschmittel-Flüssigkeits-Gemisches entgegen gerichtet. Die Einleitung des Waschmittel- Flüssigkeits-Gemisches erfolgt in einem Bereich des Laugenbehälters innerhalb des oberen Viertels des Trommelzylinders. Durch diese konstruktive Maßnahme und durch die mit der Trommeldrehung bewirkte Strömung entgegen der Bewegungsrichtung des Trommelmantels und des Fernhaltens von der Abflussöffnung wird das Lösen der Waschmittel begünstigt.Via a liquid distributor 5, which is eccentrically mounted axially parallel to the drum rotation axis 14 on the tub 3 and has a number of passage openings, the detergent-liquid mixture is distributed over the width of the drum shell 13 (FIG. 2) introduced. At the two edges to the rear wall and the end face, the drum shell 13 due to manufacturing raised raised webs (not shown), which prevent the incoming detergent-liquid mixture flows through the sides. The movement of the drum shell 13 is due to the preferential direction of rotation 8 of the laundry drum 4 of the flow direction 12 of the incoming detergent-liquid mixture directed against the liquid jet 12 from above at a shallow angle. The introduction of the detergent liquid mixture takes place in a region of the tub within the upper quarter of the drum cylinder. By this structural measure and caused by the drum rotation flow against the direction of movement of the drum shell and keeping away from the drain opening the release of the detergent is favored.

Im Ausführungsbeispiel werden die Durchflutungsöffnungen 9 im Trommelmantel 13 durch kiemenartige Ausprägungen in Form eines Halbkegels gebildet (s. Fig. 2). Diese Form bewirkt einerseits ein verzögertes Ablaufen des Waschmittel-Flüssigkeits-Gemisches vom Trommelmantel 13. Andererseits wird durch die so geformten Öffnungen 9 in Drehrichtung 8 der Trommel 4 in verstärktem Maße Flüssigkeit in das Trommelinnere geleitet. Das Durchfeuchten der Wäsche wird beschleunigt. Andere, gegebenenfalls zusätzliche Prägestrukturen im Trommelmantel 13, bevorzugt solche, die eine stark verwirbelte Strömung des Waschmittel-Flüssigkeits-Gemisches bewirken, können die Verweildauer des Gemisches auf dem Trommelmantel 13 und den Eintritt in die Wäschetrommel 4 unterstützen und zum guten und rechtzeitigen Lösen des Waschmittels beitragen, ehe das Gemisch den Laugenbehälterboden und die Abflussöffnung erreicht. In the exemplary embodiment, the through-flow openings 9 in the drum casing 13 are formed by gill-like forms in the form of a half-cone (see Fig. 2). This shape causes on the one hand a delayed drainage of the detergent-liquid mixture from the drum shell 13. On the other hand, by the thus-shaped openings 9 in the direction of rotation 8 of the drum 4 directed to a greater extent liquid in the interior of the drum. The moistening of the laundry is accelerated. Others, optionally additional embossing structures in the drum shell 13, preferably those that cause a strong turbulent flow of the detergent-liquid mixture, can support the residence time of the mixture on the drum shell 13 and the entrance to the laundry drum 4 and for good and timely release of the detergent before the mixture reaches the bottom of the lye container and the drainage hole.

Claims

Patentansprüche claims 1. Verfahren zum Einbringen von Waschmitteln bei programmgesteuerten Waschmaschinen durch ein auf den vorzugsweise zylindrischen und mit Öffnungen (9) versehenen Trommelmantel (13) einer in einem Laugenbehälter (3) um eine wenigstens annähernd waagerechte Achse (14) drehbar gelagerten Wäschetrommel (4) strömendes Waschmittel-Flüssigkeits-Gemisch, dadurch gekennzeichnet, das Waschmittel-Flüssigkeits-Gemisch in einem Strahl (12) so gegen den bewegten Trommelmantel (13) strömt, dass der Strahl (12) in einem flachen Winkel (α) auf einen Bereich (15) des Trommelmantels (13) auftrifft, der im oberen Viertel seiner Zylinderform liegt, und die Wäschetrommel (4) dabei in einer Vorzugsdrehrichtung (8) angetrieben wird, so dass der Trommelmantel (13) sich gegen den auftreffenden Strahl (12) bewegt.1. A method for introducing detergent in program-controlled washing machines by a preferably cylindrical and with openings (9) provided drum shell (13) in a tub (3) about an at least approximately horizontal axis (14) rotatably mounted laundry drum (4) flowing Detergent-liquid mixture, characterized in that the detergent-liquid mixture in a jet (12) against the moving drum shell (13) flows, that the beam (12) at a shallow angle (α) to a region (15) the drum shell (13) impinges, which is in the upper quarter of its cylindrical shape, and the laundry drum (4) is driven in a preferred direction of rotation (8), so that the drum shell (13) moves against the impinging jet (12). 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Vorzugsdrehrichtung (8) für das abwärts fallende Waschmittel-Flüssigkeits-Gemisch eine von einer Ablauföffnung (10) im Laugenbehälter (3) weg weisende Strömung erzeugt.2. The method according to claim 1, characterized in that the preferred direction of rotation (8) for the downwardly falling detergent-liquid mixture generated by a drain opening (10) in the tub (3) pointing away flow. 3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Waschmittel- Flüssigkeits-Gemisch in der Vorzugsdrehrichtung (8) schneller durch die Öffnungen (9) in die Wäschetrommel (4) eintritt bzw. wirksamer durch die Öffnungen (9) geschöpft wird als in einer der Vorzugsdrehrichtung (8) entgegen gesetzten Drehrichtung.3. The method according to claim 1, characterized in that the detergent liquid mixture in the preferred direction of rotation (8) faster through the openings (9) enters the laundry drum (4) or more effectively through the openings (9) is scooped as in one of the preferred direction of rotation (8) opposite direction of rotation. 4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Waschmittel- Flüssigkeits-Gemisch über die Breite des Trommelmantels (13) - entsprechend der Tiefe der Wäschetrommel (4) - verteilt in den Laugenbehälter (3) einströmt. 4. The method according to claim 1, characterized in that the detergent liquid mixture over the width of the drum shell (13) - according to the depth of the laundry drum (4) - distributed in the tub (3) flows. 5. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Drehgeschwindigkeit der Wäschetrommel (4) während des Antreibens in der Vorzugsdrehrichtung (8) gesteuert wird.5. The method according to claim 1, characterized in that the rotational speed of the laundry drum (4) during driving in the preferred direction of rotation (8) is controlled. 6. Waschmaschine zur Durchführung eines Verfahrens nach einem der vorstehenden Ansprüche mit einer hinsichtlich der Ausgabe von in ihr zwischengelagertem Waschmittel steuerbaren Waschmitteleinspüleinrichtung (2) und einer Waschmittelzuführungsleitung (7) sowie mit einem hinsichtlich seiner Drehrichtung steuerbaren Antriebsmotor für die Wäschetrommel (4), dadurch gekennzeichnet, dass die Waschmittelzuführungsleitung (7) innerhalb des Bereiches (15) im Laugenbehälter (3) mündet und so gerichtet ist, dass der aus der Mündung austretende Strahl (12) des Waschmittel-Flüssigkeits-Gemisches von oben in einem flachen Winkel (α) auf den Trommelmantel (13) auftrifft, und dass die Wäschetrommel (4) während der Zuführung des Waschmittel-Flüssigkeits-Gemisches in einer Vorzugsdrehrichtung (8) antreibbar ist, in welcher der Trommelmantel (13) sich gegen den auftreffenden Strahl (12) bewegt.6. Washing machine for carrying out a method according to any one of the preceding claims with a controllable with respect to the issue of interposed detergent in her Waschmitteleinspüleinrichtung (2) and a detergent supply line (7) and with a controllable with respect to its direction of rotation drive motor for the laundry drum (4), characterized in that the detergent feed line (7) opens within the region (15) in the suds container (3) and is directed such that the jet (12) of the detergent-liquid mixture emerging from the mouth is at a shallow angle (α) from above the drum shell (13) impinges, and that the laundry drum (4) during the supply of the detergent-liquid mixture in a preferred direction of rotation (8) is drivable, in which the drum shell (13) moves against the impinging jet (12). 7. Waschmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Wäschetrommel (4) Öffnungen (9) im Trommelmantel (13) aufweist, welche jeweils eine Durchlässigkeit und / oder eine Schöpfwirkung haben, welche beim Drehen der Wäschetrommel (4) in der Vorzugsdrehrichtung (8) größer sind als beim Drehen in einer der Vorzugsdrehrichtung (8) entgegen gesetzten Drehrichtung.7. Washing machine according to claim 6, characterized in that the laundry drum (4) openings (9) in the drum shell (13), which each have a permeability and / or a scooping action, which when turning the laundry drum (4) in the preferred direction of rotation ( 8) are larger than when turning in one of the preferred direction of rotation (8) opposite direction of rotation. 8. Waschmaschine nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, dass der Trommelmantel (13) zusätzlich zu den Öffnungen (9) Strukturen (16) aufweist, welche ein ungehindertes Abfließen des Waschmittel- Flüssigkeits-Gemisches verzögern. 8. Washing machine according to one of claims 6 and 7, characterized in that the drum shell (13) in addition to the openings (9) has structures (16) which retard unimpeded flow of the detergent liquid mixture.
EP07729920A 2006-06-27 2007-06-06 Method for introducing detergents and associated washing machine Active EP2038465B1 (en)

Applications Claiming Priority (2)

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DE102006029478A DE102006029478A1 (en) 2006-06-27 2006-06-27 Method for introducing detergents and washing machine therefor
PCT/EP2007/055545 WO2008000591A1 (en) 2006-06-27 2007-06-06 Method for introducing detergents and associated washing machine

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EP (1) EP2038465B1 (en)
KR (1) KR20090033189A (en)
CN (1) CN101479418B (en)
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DE (2) DE102006029478A1 (en)
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ATE445728T1 (en) 2009-10-15
DE102006029478A1 (en) 2008-01-03
CN101479418A (en) 2009-07-08
US20090293555A1 (en) 2009-12-03
DE502007001753D1 (en) 2009-11-26
WO2008000591A1 (en) 2008-01-03
KR20090033189A (en) 2009-04-01
CN101479418B (en) 2011-05-04
RU2009101071A (en) 2010-08-10
RU2414553C2 (en) 2011-03-20
EP2038465B1 (en) 2009-10-14

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