EP2202343B1 - Procédé de traitement du linge ainsi que lave-linge adapté - Google Patents

Procédé de traitement du linge ainsi que lave-linge adapté Download PDF

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Publication number
EP2202343B1
EP2202343B1 EP09178995.8A EP09178995A EP2202343B1 EP 2202343 B1 EP2202343 B1 EP 2202343B1 EP 09178995 A EP09178995 A EP 09178995A EP 2202343 B1 EP2202343 B1 EP 2202343B1
Authority
EP
European Patent Office
Prior art keywords
laundry
water
outer tub
water tank
drum
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.)
Not-in-force
Application number
EP09178995.8A
Other languages
German (de)
English (en)
Other versions
EP2202343A1 (fr
Inventor
Andreas Hanau
Hartmut Schaub
Ingo Schulze
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
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Publication of EP2202343A1 publication Critical patent/EP2202343A1/fr
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Publication of EP2202343B1 publication Critical patent/EP2202343B1/fr
Not-in-force legal-status Critical Current
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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/06—Type or material
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/02—Water supply

Definitions

  • the invention relates to a method for treating laundry in a washing machine and to a particularly suitable for carrying out this method washing machine.
  • the invention relates to a process for the treatment of laundry with a controlled wetting phase (see US-A-20080282479 ).
  • the water consumption is still relatively large.
  • the water once in the drum or the tub of the washing machine is generally used only once and disposed of after use as wastewater. It is desirable to further reduce the water consumption of a washing machine.
  • the wetting phase should be optimized so that each batch of laundry is wetted completely and evenly with a matched thereto amount of water in the tub before the actual washing process in the shortest possible time.
  • laundry in a multi-stage process has hitherto generally been treated with water by adding tap water to a drum located in a tub until the items of laundry have been sufficiently wetted.
  • This is generally achieved when a level of water in the washing machine has reached a desired level and maintains it when the supply of water is interrupted.
  • the water supply is generally carried out discontinuously in order to be able to detect a possible absorption of water by insufficiently wetted laundry items.
  • This process can take up to ten minutes.
  • the amount of water consumed and the time required for the use of the laundry depend on the absorbency of the laundry items. In general, a small amount of water and a quick and sufficient wetting (wetting) of the laundry items are desirable in order to achieve an optimal washing result.
  • a program-controlled washing machine is described with a wetting process, which can be tuned to the amount of laundry in a washing drum rotatably mounted in a tub around a non-vertical axis by means of a water supply system and a control device.
  • the feed of water into the tub is time controllable, wherein the wetting process in as many phases (Ph1 to Ph3) is divided, as quantity levels (small, medium, large) are provided for the laundry to be treated.
  • the US 2008/0282479 A1 describes a washing machine with a rotating drum and a tub, a pump for the circulation of washing liquid between the drum and tub, a water level sensor for measuring and output of the water level in the tub, and a control instrument which receives the output and controls the activation of this pump.
  • the control instrument is programmed to determine the loading of the drum with laundry based on a changing water level in the tub. In a preferred method of determining the amount of charge, the water level in the tub is compared during the circulation in the stationary state with the water level after completion of the circulation and evaluated the difference in terms of the load.
  • the previously known wetting processes or phases can be further optimized.
  • the known wetting processes take insufficiently different sized laundry items into account, so that no complete wetting takes place at very large laundry loads (ie, laundry items near the loading limit).
  • the wetting phase for small items of laundry often takes too long, measured by their wetting success.
  • the uniformity of wetting can be further improved.
  • the object of the invention is therefore to provide a method for the treatment of laundry in a washing machine, in which a water consumption is significantly reduced and the wetting phase can be controlled so that the amount and / or type of laundry in the washing machine is taken into account.
  • the object is also to show a suitable for performing this method washing machine.
  • a defined water content in the laundry is set in a step (d) as a function of the determined load with laundry and / or the type of laundry by rotating the drum with a predetermined speed U set for a predetermined period t set2 .
  • an amount M p of the amount M l of unbound water pumped into the water reservoir, where M p ⁇ M l, is passed to the suds container via an induction bowl.
  • the quantity M p is selected as a function of a relationship stored in the program control between the amount M p and the loading amount with laundry and / or the type of laundry.
  • the introduction of water through the dispenser tray is typically performed to provide detergent for the wash phase in the drum.
  • step (a) of the process according to the invention water which is partly or exclusively present in the water reservoir is preferably passed into the lye container. Very particularly preferably, water which is present exclusively in the water reservoir is passed into the tub.
  • a washing phase generally follows a wetting phase.
  • a wash liquor is pumped out of the tub by means of the first pump for disposal. This would eliminate the need for a separate pump to dispose of the wash liquor.
  • step (b) of the process the drum is rotated for a few seconds or minutes at a speed of 10 to 50 revolutions per minute.
  • the hydrostatic pressure p measured in method step (a) with the aid of the sensor can be compared with the amount of water charged.
  • the laundry in the drum absorbs water, which therefore can not contribute to an increase in the hydrostatic pressure.
  • the absolute values and their temporal change - with corresponding stored in the program control of the washing machine values for washing moisture can be the amount of present in the drum laundry and their naturalfeuchtungsgrad ( Wetting degree).
  • the duration of the wetting phase can be tuned very precisely to the amount of laundry present.
  • the method step (c) preferably uses the circumstance that with increasing saturation of the laundry with water, there is more relatively free water, which due to gravity can run back from the laundry into the tub comparatively quickly.
  • the drum is at a standstill, by tracking the time change of the hydrostatic pressure p, it is possible to detect the load of laundry and its wetting or the type of laundry.
  • the direction of rotation of the laundry drum corresponds to the direction of effectiveness of a scooping device.
  • the laundry is thoroughly moistened, so that the amount of the accumulated water can be determined more accurately.
  • a measuring device may be present, for example a time measuring device for determining the opening period of a feed valve for the water or a liquid amount measuring device for measuring the filled amount of liquid.
  • a measuring device for example a time measuring device for determining the opening period of a feed valve for the water or a liquid amount measuring device for measuring the filled amount of liquid.
  • the first pump is also arranged between the tub and a waste water outlet.
  • the use of a second pump is unnecessary, because a single pump can be used both for water transport between the water reservoir and the tub and for the removal of wash liquor from the tub via a wastewater outlet.
  • a second pump is arranged between the tub and a waste water outlet.
  • the washing machine according to the invention has a liquor outlet system arranged at the bottom of the tub and a heater for heating the aqueous liquid.
  • a liquor outlet system arranged at the bottom of the tub and a heater for heating the aqueous liquid.
  • the invention has further advantages. With the method according to the invention, it is possible to significantly reduce the amount of water used in a laundry treatment process in a washing machine, wherein at the same time a wetting phase can be optimally adjusted to the amount and / or type of laundry to be treated, so that at more uniform Wetting the laundry before the actual washing process with the optimum amount of water or alkali is wetted.
  • FIG. 1 is a schematic representation of the presently relevant parts of a washing machine, in which a method now to be explained exactly. Other embodiments are conceivable.
  • the washing machine of the FIG. 1 embodiment shown has a tub 1, in which a drum 2 rotatably mounted and operated by a drive motor 14.
  • the washing machine also has a liquor inlet system comprising a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may optionally also be guided via a Waschstoffein Kunststoff Anlagen Maschinene ("Ein Stammschale") 11, from which the feed water Can transport detergent into the tub.
  • a heater 13 in the tub 1, a heater 13.
  • the valve 9 as well as the heater 13 can be controlled by a control device (“program control”) 12 in response to a program flowchart of a time program and / or the achievement of certain measurements of Parameters such as the amount of liquid in the tub, reaching the amount M o , alkaline level, liquor temperature, speed of the laundry drum, etc. may be bound within the washing machine.
  • 15 means a sensor for measuring a hydrostatic pressure p and / or a height h of an aqueous liquid in the tub 1.
  • 17 means a first pump which is arranged between a water reservoir 16 and the tub 1. The water reservoir 16 is connected via a line 19 with the dispenser 11, so that water present in the water tank 16 can be used for the flushing of detergent before the actual washing phase.
  • the pump is arranged at the same time between a waste water outlet 18 and the tub 1.
  • a connection between the water reservoir 16 and the tub 1 or between the waste water outlet 18 and the tub 1 can be made.
  • washing machine only one pump necessary.
  • FIG. 2 shows a second embodiment of a washing machine, in which two pumps are used.
  • a first pump 17 is in this case between the water reservoir 16 and the tub 1.
  • a second pump 20 is disposed between the waste water outlet 18 and the tub 1.
  • the water reservoir 16 is connected via a line 19 with the dispenser 11, so that water present in the water tank 16 can be used for the flushing of detergent before the actual washing phase.
  • a defined water content in the laundry is set for a predetermined period of time t set2 by rotating the drum 2 at a predetermined revolution number U set in response to the determined amount of load with laundry and / or the type of laundry.
  • an amount M p of the quantity M l of unbound water pumped into the water reservoir 16, where M p ⁇ M l, is conducted into the suds container 1 via an induction bowl 11.
  • the amount M p is selected depending on a relationship between the amount M p stored in the program control and a load amount of laundry and / or a laundry type.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (10)

  1. Procédé de traitement de linge dans un lave-linge comprenant une commande programmée (12), un tambour (2) monté tournant dans une cuve (1), un capteur (15) pour déterminer une hauteur h et/ou une pression hydrostatique p d'un liquide aqueux se trouvant dans la cuve (1), un réservoir d'eau (16) et une première pompe (17) montée entre le réservoir d'eau (16) et la cuve (1), procédé dans lequel, dans une phase de mouillage,
    (a) une quantité Mo d'eau est versée dans la cuve (1) jusqu'à atteindre une hauteur prédéfinie hset et/ou une pression hydrostatique prédéfinie pset,
    caractérisé en ce que
    (b) après un temps prédéfini tset1 et un nombre prédéfini nset de rotations du tambour, une quantité Ml d'eau libre présente dans la cuve (1) est pompée dans le réservoir d'eau (16) ; et
    (c) la quantité Ml d'eau libre pompée dans le réservoir d'eau (16), le rapport Ml Ml/Mo et/ou un gradient de temps (Δh/Δt) pour la hauteur h du liquide aqueux et/ou un gradient de temps (Δp/Δt) pour la pression hydrostatique p est évalué(e) pour déterminer une quantité de charge de linge et/ou un type de linge.
  2. Procédé selon la revendication 1, caractérisé en ce que dans une étape (d), en fonction de la quantité de charge de linge déterminée et/ou du type de linge déterminé, une teneur en eau définie du linge est réglée par rotation du tambour (2) à une vitesse de rotation prédéfinie Uset pendant un temps prédéfini tset2.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que dans une phase de lavage, dans une étape (e), une quantité Mp de la quantité Ml d'eau libre pompée dans le réservoir d'eau (16), avec Mp ≤ Ml, est acheminée dans la cuve (1) via un bac à produits (11).
  4. Procédé selon la revendication 3, caractérisé en ce que la quantité Mp est choisie en fonction d'une relation, mémorisée dans la commande programmée, entre la quantité Mp et une quantité de charge de linge et/ou un type de linge.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que dans l'étape (a), l'eau présente partiellement ou exclusivement dans le réservoir d'eau (16) est acheminée dans la cuve (1).
  6. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, après un processus de lavage, un bain de lessive est pompé hors de la cuve (1) au moyen de la première pompe (17) pour être éliminé.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que dans l'étape (b), le tambour (2) est mis en rotation pour quelques secondes ou minutes à une vitesse de 10 à 50 tours par minute.
  8. Lave-linge comprenant une commande programmée (12), un tambour (2) monté tournant dans une cuve (1), un capteur (15) pour déterminer une hauteur h et/ou une pression hydrostatique p d'un liquide aqueux se trouvant dans la cuve (1), le lave-linge comprenant un réservoir d'eau (16) et une première pompe (17) montée entre le réservoir d'eau (16) et la cuve (1) et la commande programmée (12) étant conçue pour la mise en oeuvre d'un procédé de traitement de linge, procédé dans lequel, dans une phase de mouillage,
    (a) une quantité Mo d'eau est versée dans la cuve (1) jusqu'à atteindre une hauteur prédéfinie hset et/ou une pression hydrostatique prédéfinie pset,
    caractérisé en ce que
    (b) après un temps prédéfini tset1 et un nombre prédéfini nset de rotations du tambour (2), une quantité Ml d'eau libre présente dans la cuve (1) est pompée dans le réservoir d'eau (16) ; et
    (c) la quantité Ml d'eau libre pompée dans le réservoir d'eau (16), le rapport Ml / Mo et/ou un gradient de temps (Δh/Δt) pour la hauteur h du liquide aqueux et/ou un gradient de temps (Δp/Δt) pour la pression hydrostatique p est évalué(e) pour déterminer une quantité de charge de linge et/ou un type de linge.
  9. Lave-linge selon la revendication 8, caractérisé en ce que la première pompe (17) est montée en outre entre la cuve (1) et une sortie d'eaux usées (18).
  10. Lave-linge selon la revendication 8, caractérisé en ce qu'une seconde pompe (20) est montée entre la cuve (1) et une sortie d'eau usée (18).
EP09178995.8A 2008-12-18 2009-12-14 Procédé de traitement du linge ainsi que lave-linge adapté Not-in-force EP2202343B1 (fr)

Applications Claiming Priority (1)

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DE102008054930 2008-12-18

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EP2202343A1 EP2202343A1 (fr) 2010-06-30
EP2202343B1 true EP2202343B1 (fr) 2017-04-12

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217121A1 (de) * 2014-08-28 2016-03-03 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Zuführeinrichtung
DE102014220021B3 (de) * 2014-10-02 2016-02-04 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Steuerelement
DE102016225146B3 (de) * 2016-12-15 2018-05-03 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2252342T3 (es) * 2002-04-02 2006-05-16 Whirlpool Corporation Metodo para controlar el programa de una maquina lavadora y maquina lavadora que utiliza dicho metodo.
DE102006029948A1 (de) * 2006-06-29 2008-01-03 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Behandlung von Wäsche sowie hierzu geeignete programmgesteuerte Waschmaschine
DE102006030891A1 (de) * 2006-07-04 2008-01-10 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Behandlung von Wäsche sowie hierzu geeignete programmgesteuerte Waschmaschine
US20080282479A1 (en) 2007-05-18 2008-11-20 Adam John Darby Laundry machine, control and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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