EP3536844A1 - Procédé de traitement de linge dans un lave-linge et lave-linge correspondant - Google Patents

Procédé de traitement de linge dans un lave-linge et lave-linge correspondant Download PDF

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Publication number
EP3536844A1
EP3536844A1 EP19157629.7A EP19157629A EP3536844A1 EP 3536844 A1 EP3536844 A1 EP 3536844A1 EP 19157629 A EP19157629 A EP 19157629A EP 3536844 A1 EP3536844 A1 EP 3536844A1
Authority
EP
European Patent Office
Prior art keywords
drum
aqueous liquid
laundry
washing machine
tub
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
EP19157629.7A
Other languages
German (de)
English (en)
Other versions
EP3536844B1 (fr
Inventor
Gundula Czyzewski
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3536844A1 publication Critical patent/EP3536844A1/fr
Application granted granted Critical
Publication of EP3536844B1 publication Critical patent/EP3536844B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • 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
    • D06F25/00—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 and having further drying means, e.g. using hot air 
    • 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 invention relates to a method for treating laundry items in a washing machine as well as a washing machine suitable for carrying out this method.
  • treatment agent In the treatment of laundry items in a washing machine are generally chemical laundry treatment (hereinafter sometimes also abbreviated "treatment agent") used, which may be composed differently depending on the intended use or intended effect.
  • a laundry treating agent e.g. a detergent or fabric softener
  • a laundry treatment agent typically contains several components used in the laundry treatment in the washing machine, e.g. Washing clothes, have different functions. So far, laundry treatment agents have been used in the form of their finished mixtures in liquid or powder form. However, particularly powerful ingredients can interact with each other, so that a certain separation of these ingredients before contact with laundry would be useful.
  • a detergent pad has at least one chamber surrounded by a water-soluble film, wherein the detergent pad in the chamber or chambers contains at least one liquid or powdered laundry treatment agent.
  • the detergent pillows at generally elevated prices, allow for easier dosage of the treating agent and, moreover, separation of potentially less compatible ingredients. So there are detergent pillows with, for example, three chambers. In this case, the ingredients remain separated until a washing program is carried out. Only when in contact with water, the film dissolves to release the active ingredients.
  • the films sometimes do not dissolve very quickly. Sometimes there are even film residues towards the end of a washing phase. In addition, the washing cushions sometimes slip into the door rubber, ie the cuff of the drum, and then come sometimes during a rinsing phase again in contact with water. This can lead under very unfavorable circumstances to the fact that even at the end of the rinsing phase still slimy residues appear in the laundry items.
  • the object of the invention is to provide an improved method for treating items of laundry in a washing machine, which is particularly suitable when using detergent cushions.
  • the object of the invention is also to show a suitable for carrying out this method washing machine.
  • the object underlying the invention is achieved by a method for treating laundry items and a suitable washing machine according to the independent claims.
  • Preferred embodiments of the invention are listed in the respective dependent claims.
  • Preferred embodiments of the method correspond to preferred embodiments of the washing machine, even if it is not separately pointed out here in each case.
  • substantially horizontal means that there may generally be deviations from the horizontal of up to 25%, preferably up to 15%.
  • the aqueous liquid is not restricted according to the invention. However, since these are to be used in the present invention for treating and especially for washing laundry, it will be as clean as possible water. Therefore, water from a water supply to the washing machine, i. E. Tap water, used. However, the aqueous liquid may also be, for example, rinsing liquid stored in the washing machine of e.g. act the last rinse.
  • the method step c) advantageously has the effect that no substantial redistribution of the items of laundry and of the container takes place within the drum.
  • the container remains at a location within the drum at which the container can be repeatedly washed by the aqueous liquid.
  • a friction is additionally generated on the container, which promotes a rapid dissolution of the container.
  • the predetermined period of time t set is in a range of 1.5 to 5 minutes.
  • the period of time t set is selected so that it is sufficient to substantially dissolve the container containing the laundry treatment agent and to distribute the laundry treatment agent in the aqueous liquid.
  • it is advantageously achieved to provide the laundry treatment agent early in the washing process and substantially completely.
  • residues of laundry treatment agent appear in a rinsing phase, which were not previously dissolved in the washing phase.
  • the washing machine has a pumping line and a pump which serves to convey an aqueous liquid (6), and in step (c) the aqueous liquid is moved by pumping through the pumping line.
  • the pumping is generally done with a suitable pump.
  • a pump which is used by the washing machine according to the invention and which serves to convey an aqueous liquid can also be used.
  • the pumping system the already dissolved laundry treatment agent is thus advantageously distributed in the aqueous liquid.
  • the circulating pumping also generates a movement of the aqueous liquid in the environment of the detergent pad.
  • the predetermined minimum value h min is selected so that at least the drum comes into contact with the aqueous liquid or pumping around with the pumped circulation system is possible, wherein pumping requires that so much aqueous liquid is contained in the pumping system sufficient to return the liquid pumped out of the tub via the pumping line into the tub.
  • a selected liquid level is advantageously ensured that the movement of the drum, which entrains the liquid when moving, or the operation of the pumped circulation system generates a movement of the aqueous liquid.
  • the container which is introduced in step a) at a lower region of the drum, comes in contact with the liquid level predetermined in this way at an early stage.
  • the minimum value h min of the liquid level is chosen such that it is above a container introduced in the lower part of the drum.
  • step (c) the drum is reversed with a predetermined amplitude A T which is less than 180 °, preferably less than 150 °, more preferably less than 120 °, and in particular Range is from 70 ° to 110 °, wherein the amplitude A T is the maximum deflection of the drum in degrees ("°") during a Reversier suitses.
  • the drum is moved in step (c) at a speed which corresponds to a speed of the drum in the range of 25 to 35 revolutions / min. The speed should preferably be less than or equal to 50 revolutions / min.
  • the maximum deflection of the drum is preferably dependent on the selected speed of the drum, wherein for a small amplitude A T a low speed of the drum and for a high amplitude A T a high speed can be selected.
  • a method is preferred in which the drum is stationary during the filling of the aqueous liquid in step (b).
  • step (c) is selected as a function of a load L with the items of laundry, wherein a relationship between the amount of movement and L is stored in the control device.
  • the load L can be determined with items of laundry, for example by weighing the drum. Moreover, it is possible to determine the load L on the basis of the suction behavior of the laundry items in a wetting phase.
  • a hydrostatic pressure of the aqueous liquid is measured in the tub, which is a measure of the present as a "free liquor" in the tub aqueous liquid.
  • the amount of free liquor will be less with the same addition of water in the tub when a comparatively large amount of laundry absorbs a relatively large proportion of the aqueous liquid. Based on this relationship, the amount of laundry can be determined, and the type of laundry may be considered. This can possibly be done by inputs of a user of the washing machine or by another determination of the type of laundry, for example by means of IR spectroscopy.
  • the method according to the invention generally overlaps with a wetting phase, so that the loading L can generally not be considered at the beginning, but only during the performance of the method according to the invention.
  • the extent of the movement in step (c) comprises an amplitude A T , with which the Drum is reversed, wherein the amplitude A T is the maximum deflection of the drum in degrees during a Reversier suitses.
  • a maximum allowable amount of movement in step (c) may be greater for larger loadings L with laundry.
  • the extent of the movement of the aqueous liquid in step (c) comprises a pumping rate of the aqueous liquid in the pumping line.
  • the open or closed container used in step (a) of the method according to the invention generally has the function of distributing treating agent contained in it in the aqueous liquid.
  • the container is not restricted, so that the term "container” includes dimensionally stable containers as well as laundry bags.
  • dimensionally stable containers are in particular open cups, the walls of which generally consist of a suitable sufficiently thick plastic material which is insoluble in an aqueous liquid, so that dimensional stability is ensured.
  • the container is a detergent pad which has at least one chamber which is enclosed by a water-soluble film, wherein the detergent pad in the chamber or chambers contains at least one liquid or powdered laundry treatment agent.
  • the water-soluble film is made of, for example, a polyvinyl alcohol or a derivative thereof.
  • the washing machine used in the method contains a treatment agent sensor for determining a concentration of the laundry treatment agent and in the process, the distribution of A laundry treating agent is traced from the container in the aqueous liquid using the treating agent sensor to determine a predetermined distribution of the laundry treating agent in the aqueous liquid.
  • the "predetermined distribution" can be chosen so that all laundry treatment agent has been distributed from the container. When using a laundry bag, this means in particular that the water-soluble film has largely or completely dissolved, so that the laundry treatment agent contained in the chamber or chambers of the laundry bag could completely get into the aqueous liquid.
  • the treatment agent sensor can fulfill this function, it is not restricted according to the invention. It may be, for example, an electrochemical sensor or an optical sensor, since many laundry treatment agents are colored.
  • step (b) the filling of the aqueous liquid takes place via a cuff of the washing machine, i. the aqueous liquid is fed directly to the laundry.
  • the liquid can be passed through a waterway, which is connected to the cuff and preferably not passed over a dispenser.
  • the waterway can also be passed through a prewash chamber of a dispenser tray.
  • the inventive method can be added separately by a user of the washing machine on the operating unit.
  • the user it is advantageously possible for the user to be able to select a washing program adapted to his laundry treatment agent.
  • the method according to the invention can be integrated into washing programs which are particularly suitable for the case of the use of detergent cushions.
  • the washing machine can be a washing machine per se or a washer-dryer, ie a device which also has a drying device.
  • the washing machine comprises a pump for conveying an aqueous liquid and a pumping line.
  • the pumping line is generally part of a pumping system, which also has a circulation pump.
  • This can be the pump, which is also used for pumping and thus disposal of wash liquor.
  • the operation of this pump would be suitably controlled, for example by means of a three-way valve, so that can be selected between pumping and pumping.
  • there may also be, for example, two pumps, one of which is used only in the pumping system, while the other pump is used only for pumping off used washing liquor or washing liquid.
  • the circulating pump provided in this embodiment of the invention is designed such that it can bring an aqueous liquid present in the tub in contact with the laundry items in the drum.
  • the pumping system essentially serves to distribute laundry treating agent in the aqueous liquid by, for example, assisting the dissolution of detergent pads.
  • the pumping system will also be advantageous used in a washing phase, in which then an aqueous liquid containing generally detergent is repeatedly brought into contact with laundry to be cleaned.
  • a washing machine used herein also generally includes a heater and a liquor drain system with a drain pump located at the bottom of the tub.
  • a washing machine used herein also generally includes laundry drippers and / or scooping devices.
  • a temperature sensor is arranged in the tub.
  • the temperature sensor is then arranged in a lower region of the tub, preferably in a designated as a radiator pocket portion of the tub container jacket, in which also generally the heater is placed.
  • the invention has the advantage that the distribution of laundry treatment agents in an aqueous liquid, which can then also be referred to as a wash liquor, is supported without the container containing it being moved too much and, for example, getting into a cuff of the washing machine. This is especially important when using laundry bags. It is supported in this case, the resolution of the laundry bag, so that by a rapid complete dissolution of the laundry bag, the retention of film residues in the cleaned laundry can be completely avoided.
  • FIG. 1 shows in particular a schematic representation of the invention essential parts of a suitable for carrying out the method according to the invention washing machine.
  • the schematically illustrated washing machine 1 contains in a tub 2 a rotatably mounted about a horizontal axis of rotation 18 drum 3 with laundry 4.
  • the washing machine 1 further comprises a fresh water supply device, which consists of a controllable by the controller 7 valve 23 and a fresh water supply line 21.
  • the fresh water supply line 21 is connected via a metering device 22 for laundry treatment agent, i. a dispensing tray 22, guided, so that in addition to an inventively provided addition of laundry treatment agent this can also be rinsed from the metering device 22 by means of fresh water supply via the fresh water supply line 21 into the tub 2.
  • the aqueous liquid generally water, enters the drum 3 without prior contact with laundry treatment agent, be it via the dispenser bowl 22 or a sleeve of the washing machine 1, not shown here.
  • the drum 3 is driven by the drive motor 11.
  • the drive motor 11 is in this non-limiting embodiment, a brushless and thus quiet operating drive motor 11th
  • the washing machine 1 further comprises a pumping system 5, 9, 14 consisting of a pumping line 9, a washing tub inlet 14 and a pump 5, which can also be labeled as a drain pump 5.
  • a pumping system 5, 9, 14 consisting of a pumping line 9, a washing tub inlet 14 and a pump 5, which can also be labeled as a drain pump 5.
  • an aqueous liquid 6, for example water can be pumped through the suds pump 5 via the suds container outlet 10 out of the suds container 2 and returned to the suds container 2 via the recirculation line 9 and the suds container inlet 14. In this way, a circulation of the aqueous liquid 6 is made possible.
  • step (c) of the method according to the invention namely a movement of the aqueous liquid 6 during a predetermined period t set > 1 min, in which the drum 3 is in a resting state or is moved so that no rotation of the drum 3 takes place by an angle ⁇ ⁇ 180 °, possible.
  • the drain pump 5 is further connected to a sewer line 13 in the exemplary embodiment shown here.
  • a controllable by the controller 7, not shown here, three-way valve allows this Embodiment, the switching of the pumping operation of the pumping system 5,9,14 on the sewer line 13. In this way, if necessary, aqueous liquid can be pumped out of the tub 2 and disposed of.
  • radiator pocket 20 arranged in the tub 2, there are a heating device 15, a pressure sensor 16 and a temperature sensor 17.
  • the pressure sensor 16 is a sensor for the measurement of the hydrostatic pressure in the tub 2.
  • the hydrostatic pressure p results from the filling level h of the aqueous liquid 6 present in the tub 2 and in particular also in the radiator pocket 20.
  • the pressure sensor 16 can according to the invention be used in particular for setting a predetermined water level h min . In addition, as described herein, it may also be used to determine the loading L of the drum 3 with laundry 4.
  • the closed container 8 is in particular a Detergent pad, which has at least one chamber enclosed by a water-soluble film, wherein the detergent pad in the chamber or chambers contains at least one liquid or powdered laundry treatment agent.
  • the container 8 and subsequently the laundry items 4 are placed in the drum 3 by a user first.
  • the container 8 is located at a lower portion of the drum 3, which comes into contact with the introduced into the tub 2 aqueous liquid 6 for the first time.
  • Fig. 1 is a liquid level of the aqueous liquid 6 indicated by the horizontal line shown within the drum, wherein the liquid level h is above the container 8.
  • the washing machine 1 makes it possible, in particular, for a reversing of the drum 3 with a predetermined amplitude A T , which is smaller than 180 °, to be carried out in step (c), the amplitude A T being the maximum deflection of the drum 3 in degrees during a Reversing step is.
  • the movement of the drum 3 with an amplitude A T is preferably ensured that no substantial redistribution of the laundry items 4 and the container 8 takes place within the drum 3.
  • step (c) it is alternatively or in addition to the above variant for step (c) possible due to the existing pumping 9, that in step (c) the aqueous liquid 6 is moved by pumping through the pumping line 9.
  • the movement of the aqueous liquid 6 in the tub 2 is effected by the rotation or movement of the drum 3 and / or by operating the pumping system 5, 9, 14.
  • the container 8 is flushed with the aqueous liquid 6 intensively, as a result of which the container 8 can dissolve quickly and the laundry treatment agent contained in the container 8 is introduced into the aqueous liquid 6.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP19157629.7A 2018-03-09 2019-02-18 Procédé de traitement de linge dans un lave-linge et lave-linge correspondant Active EP3536844B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018203577.6A DE102018203577A1 (de) 2018-03-09 2018-03-09 Verfahren zum Behandeln von Wäschestücken in einer Waschmaschine und hierzu geeignete Waschmaschine

Publications (2)

Publication Number Publication Date
EP3536844A1 true EP3536844A1 (fr) 2019-09-11
EP3536844B1 EP3536844B1 (fr) 2023-09-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19157629.7A Active EP3536844B1 (fr) 2018-03-09 2019-02-18 Procédé de traitement de linge dans un lave-linge et lave-linge correspondant

Country Status (4)

Country Link
EP (1) EP3536844B1 (fr)
CN (1) CN110241555B (fr)
DE (1) DE102018203577A1 (fr)
PL (1) PL3536844T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019216697A1 (de) * 2019-10-30 2021-05-06 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700989A1 (fr) * 1994-09-12 1996-03-13 The Procter & Gamble Company Détergent emballé par dose
WO2009033617A1 (fr) * 2007-09-06 2009-03-19 Andreas Siggelkow Emballage hydrosoluble à dépôt fonctionnel, fabrication et utilisation
EP2261413A1 (fr) * 2009-06-08 2010-12-15 BSH Bosch und Siemens Hausgeräte GmbH Procédé de traitement du linge par transport de lessive entre des récipients à lessive dans un lave-linge
EP3042991A1 (fr) * 2013-09-05 2016-07-13 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande
WO2016146313A1 (fr) * 2015-03-13 2016-09-22 BSH Hausgeräte GmbH Procédé pour faire fonctionner un lave-linge avec un capteur électrochimique et lave-linge pour la mise en oeuvre dudit procédé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8812795U1 (de) * 1988-02-15 1989-06-15 Henkel KGaA, 4000 Düsseldorf Dosiervorrichtung zur Aufnahme und Abgabe eines Wäschebehandlungsmittels
KR101396978B1 (ko) * 2007-08-01 2014-05-19 엘지전자 주식회사 드럼방식 세탁장치의 제어방법
DE102009002303B4 (de) * 2009-04-09 2019-03-28 BSH Hausgeräte GmbH Verfahren und Vorrichtung zum Dosieren von Reinigungsmitteln in einer Reinigungsmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700989A1 (fr) * 1994-09-12 1996-03-13 The Procter & Gamble Company Détergent emballé par dose
WO2009033617A1 (fr) * 2007-09-06 2009-03-19 Andreas Siggelkow Emballage hydrosoluble à dépôt fonctionnel, fabrication et utilisation
EP2261413A1 (fr) * 2009-06-08 2010-12-15 BSH Bosch und Siemens Hausgeräte GmbH Procédé de traitement du linge par transport de lessive entre des récipients à lessive dans un lave-linge
EP3042991A1 (fr) * 2013-09-05 2016-07-13 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande
WO2016146313A1 (fr) * 2015-03-13 2016-09-22 BSH Hausgeräte GmbH Procédé pour faire fonctionner un lave-linge avec un capteur électrochimique et lave-linge pour la mise en oeuvre dudit procédé

Also Published As

Publication number Publication date
DE102018203577A1 (de) 2019-09-12
CN110241555A (zh) 2019-09-17
PL3536844T3 (pl) 2024-02-12
EP3536844B1 (fr) 2023-09-13
CN110241555B (zh) 2023-02-17

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