EP0379666B1 - Method and device for rinsing the laundry - Google Patents

Method and device for rinsing the laundry Download PDF

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Publication number
EP0379666B1
EP0379666B1 EP89121477A EP89121477A EP0379666B1 EP 0379666 B1 EP0379666 B1 EP 0379666B1 EP 89121477 A EP89121477 A EP 89121477A EP 89121477 A EP89121477 A EP 89121477A EP 0379666 B1 EP0379666 B1 EP 0379666B1
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EP
European Patent Office
Prior art keywords
laundry
rinsing
soft
treatment
portions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89121477A
Other languages
German (de)
French (fr)
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EP0379666A1 (en
Inventor
Lieselotte Brodzina
Manfred Dipl.-Ing. Krüger
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.)
BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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Publication of EP0379666A1 publication Critical patent/EP0379666A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof

Definitions

  • the invention is based on a method for rinsing detergent residues from a laundry item by means of water in a washing machine, in which the rinsing process contains a section for treating the laundry with a fabric softener and in which the amount of fabric softener provided for the treatment of the laundry is at least above the Duration of a first part of the treatment section is added to the rinse water.
  • Such methods are known (for example FR-A-24 02 026).
  • the quantity of fabric softener intended for the treatment process is regularly added to the rinse water in a coherent dose. This is done either in a way that a metered single dose of fabric softener is supplied to the incoming rinse water and this single dose is transferred together with the rinse water into the tub.
  • DE-A-31 49 851 such a measured amount of Fabric softener is conveyed from one storage container into the laundry treatment room in one go without the involvement of the rinse water.
  • the fabric softener Since the fabric softener has a very high viscosity, it cannot distribute itself evenly enough in the rinse water, so that local increases in the concentration of fabric softener occur. This applies equally to the addition without rinse water and the even addition to the incoming rinse water, because the fabric softener - even in the laminar flow of the incoming rinse water - cannot dissolve. If such clouds of highly concentrated fabric softener hit laundry items, the total amount of fabric softener in this cloud is absorbed onto the fibers of the laundry items and is therefore lost to the treatment of other fibers from laundry items. As a result, these are undersupplied with fabric softener. A uniform softener treatment of the laundry items is therefore not possible with devices of the prior art.
  • the invention has for its object to avoid the disadvantages described above in a method of the type mentioned and to ensure that laundry items treated with fabric softener are evenly acted upon by the fabric softener.
  • this object is achieved in that the amount of fabric softener intended for treating the laundry is added to the rinse water in small portions of several individual doses. If facilities are conceivable for this, it would be of great benefit to use the amount of fabric softener provided for the treatment of the laundry over a longer period of the treatment section (not only during the water inlet) continuously to the rinse water. But even the addition of several, for example seven, smaller portions according to the invention gives the fabric softener on the way to the laundry to a greater extent than with a short-term, continuous supply of the total amount, to be distributed in the incoming rinse water and to be distributed accordingly on the laundry . Smaller portions can dissolve faster in the rinse water than a coherent larger dose.
  • these portions are already added to the incoming rinse water.
  • the incoming water is very turbulent and only reaches the laundry over a long distance, so that some of the smaller portions of the fabric softener have the opportunity to be evenly distributed in the wash water before being drawn onto the laundry.
  • the method according to the invention is advantageously used in a device for carrying out the method with a program-controlled device for metering additions from a fabric softener supply and a control device which excites the device for dispensing the amount of fabric softener provided for the treatment of the laundry, the control device the quantity reported to her is broken down into a number of smaller portions and the device for the temporally distributed delivery of the portions is activated.
  • the method according to the invention is advantageously used in a device for carrying out the process by a program-controlled device for dosing additions from a fabric softener supply and by a control device which breaks down the amount of fabric softener reported to it into a number of small portions and the device during Treatment section stimulates the temporally distributed delivery of the portions.
  • the device is a peristaltic pump, the suction side of which is connected by means of a pipeline to a storage container and the pressure side of which is connected to a rinsing water supply channel.
  • the portionwise addition of the required amount of fabric softener still has a significant advantage over the continuous addition of the total amount:
  • the undesirable peculiarity of the fabric softener to affinity immediately and irreversibly in the amount present on the fabric parts just present had led to an adjustment of the dosage amount which would be too large if it were evenly distributed on the laundry. In this way, the chance was improved that, despite the concentrated loading of individual fabric parts, other fabric parts could still absorb sufficient amounts of fabric softener. Since the addition of the fabric softener distributed according to the invention no longer requires such large amounts as previously, an amount of approximately 20% of the amount of fabric softener previously required can be saved. The more economical use of fabric softener also reduces the risk of skin irritation caused by this. In addition, wastewater pollution is reduced to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning In General (AREA)

Abstract

The quantity of fabric conditioner provided for treating the laundry is administered to the rinsing water in small portions consisting, for example, of seven individual doses. This ensures that the fabric conditioner is distributed more effectively in the rinsing water. Local accumulations of high concentrations of portions of fabric conditioner on the laundry batches can thus be prevented.

Description

Die Erfindung geht aus von einem verfahren zum Ausspülen von Waschmittelresten aus einem Wäscheposten mittels Wasser in einer Waschmaschine, bei dem der Spülprozeß einen Abschnitt zum Behandeln der Wäsche mit einem Weichspülmittel enthält und bei dem die für die Behandlung der Wäsche vorgesehene Menge an Weichspülmittel mindestens über die Dauer eines ersten Teils des Behandlungsabschnitts verteilt dem Spülwasser zugegeben wird.The invention is based on a method for rinsing detergent residues from a laundry item by means of water in a washing machine, in which the rinsing process contains a section for treating the laundry with a fabric softener and in which the amount of fabric softener provided for the treatment of the laundry is at least above the Duration of a first part of the treatment section is added to the rinse water.

Derartige Verfahren sind bekannt (z.B. FR-A-24 02 026). Hierbei wird regelmäßig die für den Behandlungsprozeß vorgesehene Menge an Weichspülmittel in einer zusammenhängenden Dosis den Spülwasser zugegeben. Dies geschieht entweder auf eine Weise, bei der dem zulaufenden Spülwasser eine zugemessene Einzeldosis von Weichspülmittel zugeleitet und dabei diese Einzeldosis zusammen mit dem Spülwasser in den Laugenbehälter überführt wird. In einer anderen bekannten Einrichtung (DE-A-31 49 851) wird eine solche bemessene Menge an Weichspülmittel in einem Zuge ohne Mitwirkung des Spülwassers aus einem Vorratsbehälter unmittelbar in den Wäsche-Behandlungsraum gefördert.Such methods are known (for example FR-A-24 02 026). The quantity of fabric softener intended for the treatment process is regularly added to the rinse water in a coherent dose. This is done either in a way that a metered single dose of fabric softener is supplied to the incoming rinse water and this single dose is transferred together with the rinse water into the tub. In another known device (DE-A-31 49 851) such a measured amount of Fabric softener is conveyed from one storage container into the laundry treatment room in one go without the involvement of the rinse water.

Da das Weichspülmittel eine sehr hohe Viskosität hat, kann es sich nicht schnell genug gleichmäßig im Spülwasser verteilen, so daß örtliche Überhöhungen der Konzentration von Weichspülmittel auftreten. Dies betrifft die Zugabe ohne Spülwasser und die gleichmäßige Zugabe ins zulaufende Spülwasser gleichermaßen, weil sich das Weichspülmittel - auch in der laminaren Strömung des zulaufenden Spülwassers - nicht auflösen kann. Treffen nun derartige Wolken hochkonzentrierten Weichspülmittels auf Wäschestücke, so zieht die gesamte Weichspülmittel-Menge dieser Wolke auf die Fasern der Wäschestücke auf und geht damit der Behandlung anderer Fasern von Wäschestücken verloren. Diese werden dadurch mit Weichspülmittel unterversorgt. Eine gleichmäßige Weichspülmittel-Behandlung der Wäschestücke ist daher mit Einrichtungen des Standes der Technik nicht möglich.Since the fabric softener has a very high viscosity, it cannot distribute itself evenly enough in the rinse water, so that local increases in the concentration of fabric softener occur. This applies equally to the addition without rinse water and the even addition to the incoming rinse water, because the fabric softener - even in the laminar flow of the incoming rinse water - cannot dissolve. If such clouds of highly concentrated fabric softener hit laundry items, the total amount of fabric softener in this cloud is absorbed onto the fibers of the laundry items and is therefore lost to the treatment of other fibers from laundry items. As a result, these are undersupplied with fabric softener. A uniform softener treatment of the laundry items is therefore not possible with devices of the prior art.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Verfahren der eingangs genannten Art die zuvor beschriebenen Nachteile zu vermeiden und dafür zu sorgen, daß mit Weichspülmittel behandelte Wäscheposten gleichmäßig vom Weichspülmittel beaufschlagt werden.The invention has for its object to avoid the disadvantages described above in a method of the type mentioned and to ensure that laundry items treated with fabric softener are evenly acted upon by the fabric softener.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die für die Behandlung der Wäsche vorgesehene Menge an Weichspülmittel in kleinen Portionen von mehreren Einzeldosen dem Spülwasser zugegeben wird. Sofern hierfür Einrichtungen denkbar sind, wäre es von großem Nutzen, die für die Behandlung der Wäsche vorgesehen Menge an Weichspülmittel über eine längere Dauer des Behandlungsabschnittes (nicht nur während des Wasserzulaufs) kontinuierlich dem Spülwasser zuzugeben. Aber bereits die erfindungsgemäße Zugabe von mehreren, z.B. sieben, kleineren Portionen gibt dem Weichspülmittel auf dem Wege bis zur Wäsche in höherem Maße als bei einer kurzfristigen, zusammenhängenden Zufuhr der Gesamtmenge die Gelegenheit, sich im zugelaufenen Spülwasser zu verteilen und entsprechend verteilt auf die Wäsche aufzuziehen. Kleinere Portionen können sich schneller im Spülwasser losen als eine zusammenhängende größere Dosis. Alle nachfolgend zugegebenen Einzeldosen haben demnach wiederum die Chance, sich aufzulösen, bevor sie auf andere Teile des Wäschepostens stoßen als ihre Vorgängerdosis. Die einzelnen Portionen können aber auch direkt in den Laugenbehälter einer Waschmaschine gegeben werden, deren Wäschetrommel durch Drehen das Weichspülmittel sofort im Spülwasser verteilt.According to the invention, this object is achieved in that the amount of fabric softener intended for treating the laundry is added to the rinse water in small portions of several individual doses. If facilities are conceivable for this, it would be of great benefit to use the amount of fabric softener provided for the treatment of the laundry over a longer period of the treatment section (not only during the water inlet) continuously to the rinse water. But even the addition of several, for example seven, smaller portions according to the invention gives the fabric softener on the way to the laundry to a greater extent than with a short-term, continuous supply of the total amount, to be distributed in the incoming rinse water and to be distributed accordingly on the laundry . Smaller portions can dissolve faster in the rinse water than a coherent larger dose. All subsequently added single doses therefore have the chance to dissolve before they come across parts of the laundry item other than their previous dose. However, the individual portions can also be placed directly in the washing tub of a washing machine, the drum of which immediately rotates the fabric softener into the washing water.

In besonders vorteilhafter Weise werden diese Portionen auch schon dem zulaufenden Spülwasser beigeben. Das zulaufende Wasser ist stark turbulent und gelangt erst auf längerem Wege an die Wäsche, so daß ein Teil der kleineren Portionen des Weichspülmittels Gelegenheit hat, sich vor dem Aufziehen auf die Wäsche im Spülwasser gleichmäßig zu verteilen.In a particularly advantageous manner, these portions are already added to the incoming rinse water. The incoming water is very turbulent and only reaches the laundry over a long distance, so that some of the smaller portions of the fabric softener have the opportunity to be evenly distributed in the wash water before being drawn onto the laundry.

Das erfindungsgemäße Verfahren wird vorteilhafterweise in einer Einrichtung zur Durchführung des Verfahrens mit einer programmgesteuerten Vorrichtung zum Dosieren von Zugaben aus einem Weichspülmittel-Vorrat und einer Steuereinrichtung welche die Vorrichtung zur Abgabe der für die Behandlung der Wäsche vorgesehenen Menge an Weichspülmittel anregt, angewendet, wobei die Steuereinrichtung die ihr gemeldete Menge in einer Anzahl von kleineren Portionen zerlegt und die Vorrichtung zur zeitlich verteilten Abgabe der Portionen aktiviert.The method according to the invention is advantageously used in a device for carrying out the method with a program-controlled device for metering additions from a fabric softener supply and a control device which excites the device for dispensing the amount of fabric softener provided for the treatment of the laundry, the control device the quantity reported to her is broken down into a number of smaller portions and the device for the temporally distributed delivery of the portions is activated.

Das erfindungsgemäße Verfahren wird vorteilhafterweise in einer Einrichtung zur Durchführung angewendet, die durch eine programmgesteuerte Vorrichtung zum Dosieren von Zugaben aus einem Weichspülmittel-Vorrat und durch eine Steuereinrichtung, welche die ihr gemeldete Menge an Weichspülmittel in eine Anzahl von kleine Portionen zerlegt und die Vorrichtung während des Behandlungsabschnitts zur zeitlich verteilten Abgabe der Portionen anregt.The method according to the invention is advantageously used in a device for carrying out the process by a program-controlled device for dosing additions from a fabric softener supply and by a control device which breaks down the amount of fabric softener reported to it into a number of small portions and the device during Treatment section stimulates the temporally distributed delivery of the portions.

Eine vorteilhafte Weiterbildung der erfindungsgemäßen Einrichtung ist dadurch gekennzeichnet, daß die Vorrichtung eine Peristaltik-Pumpe ist, deren Saugseite mittels einer Rohrleitung an einen Vorratsbehälter und dessen Druckseite an einen Spülwasser-Zulaufkanal angeschlossen ist. Diese Einrichtungen ermöglichen auf einfache und kostengünstige Weise die Durchführung des erfindungsgemäßen Verfahrens und können durch eine Steuereinrichtung in bekannter elektrischer oder elektronischer Schaltungstechnik gesteuert werden.An advantageous development of the device according to the invention is characterized in that the device is a peristaltic pump, the suction side of which is connected by means of a pipeline to a storage container and the pressure side of which is connected to a rinsing water supply channel. These devices enable the method according to the invention to be carried out in a simple and inexpensive manner and can be controlled by a control device using known electrical or electronic circuit technology.

Die portionsweise Zugabe der benötigten Weichspülmittel-Menge hat noch einen bedeutenden Vorteil gegenüber der zusammenhängenden einmaligen Zugabe der Gesamtmenge: Die unerwünschte Eigenart des Weichspülmittels, sofort und unumkehrbar in der jeweils vorliegenden Menge affin auf die gerade vorliegenden Gewebeteile aufzuziehen, hatte zu einer Einstellung der Dosiermenge geführt, die bei gleichmäßiger Verteilung auf der Wäsche an sich zu groß wäre. Auf diese Weise wurde die Chance verbessert, daß trotz konzentrierter Beaufschlagung einzelner Gewebeteile auch andere Gewebeteile noch genügende Mengen von Weichspülmittel aufnehmen konnten. Da nunmehr durch die erfindungsgemäß verteilte Zugabe des Weichspülmittels hiervon nicht mehr so große Mengen wie bisher benötigt werden, kann eine Menge von ca. 20 % der bisher benötigten Weichspülmittel-Menge eingespart werden. Die sparsamere Verwendung von Weichspülmittel setzt auch die Gefahr von hierdurch verursachten Haut-Irritationen herab. Außerdem wird die Abwasserbelastung auf ein Minimum verringert.The portionwise addition of the required amount of fabric softener still has a significant advantage over the continuous addition of the total amount: The undesirable peculiarity of the fabric softener to affinity immediately and irreversibly in the amount present on the fabric parts just present had led to an adjustment of the dosage amount which would be too large if it were evenly distributed on the laundry. In this way, the chance was improved that, despite the concentrated loading of individual fabric parts, other fabric parts could still absorb sufficient amounts of fabric softener. Since the addition of the fabric softener distributed according to the invention no longer requires such large amounts as previously, an amount of approximately 20% of the amount of fabric softener previously required can be saved. The more economical use of fabric softener also reduces the risk of skin irritation caused by this. In addition, wastewater pollution is reduced to a minimum.

Claims (4)

  1. Method for the rinsing of washing agent residues out of a laundry lot by means of water in a washing machine, in which the rinsing process contains a section for treating the laundry with a soft-rinsing agent and in which the quantity of soft-rinsing agent provided for the treatment of the laundry is added to the rinsing water in distribution over at least the duration of a first part of the treatment section, characterised thereby, that the quantity of the soft-rinsing agent provided for the treatment of the laundry is added to the rinsing water in small portions of several individual doses.
  2. Method according to claim 1, characterised thereby, that at least a part of the portions is added to the inflowing rinsing water.
  3. Equipment for the performance of the method according to claim 1 or 2 with a program-controlled device for the metering of additions from a soft-rinsing agent stock and a control equipment which stimulates the device for delivery of the quantity of soft-rinsing agent provided for the treatment of the laundry, characterised thereby, that the control equipment resolves the quantity reported to it into a number of smaller portions and activates the device for the delivery of the portions spread in time.
  4. Equipment according to claim 3, characterised thereby, that the device is a peristaltic pump, the suction side of which is connected by means of a pipe duct to a stock container and the pressure side of which is connected to a rinsing water inlet channel.
EP89121477A 1989-01-23 1989-11-21 Method and device for rinsing the laundry Expired - Lifetime EP0379666B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901884A DE3901884A1 (en) 1989-01-23 1989-01-23 METHOD FOR RINSEING DETERGENT REMAINS FROM A LAUNDRY LOT, AND DEVICE FOR CARRYING OUT THE METHOD
DE3901884 1989-01-23

Publications (2)

Publication Number Publication Date
EP0379666A1 EP0379666A1 (en) 1990-08-01
EP0379666B1 true EP0379666B1 (en) 1995-02-15

Family

ID=6372612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121477A Expired - Lifetime EP0379666B1 (en) 1989-01-23 1989-11-21 Method and device for rinsing the laundry

Country Status (5)

Country Link
EP (1) EP0379666B1 (en)
AT (1) ATE118563T1 (en)
DE (2) DE3901884A1 (en)
ES (1) ES2068230T3 (en)
GR (1) GR3015080T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011083578B4 (en) * 2011-09-28 2019-10-24 BSH Hausgeräte GmbH Process for softening laundry in a washing machine and washing machine suitable for this purpose

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176906A (en) * 1968-05-17 1970-01-07 Shell Int Research Method and Apparatus for Continuously Producing Tubular Foamed Polyurethane Insulation
DE2739792A1 (en) * 1977-09-03 1979-03-15 Bauknecht Gmbh G WASHING MACHINE

Also Published As

Publication number Publication date
DE58909008D1 (en) 1995-03-23
GR3015080T3 (en) 1995-05-31
EP0379666A1 (en) 1990-08-01
ES2068230T3 (en) 1995-04-16
ATE118563T1 (en) 1995-03-15
DE3901884A1 (en) 1990-07-26

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