EP2408958A1 - Procédé pour optimiser une phase de rinçage d'une machine à laver, ainsi que machine à laver convenant à ce procédé - Google Patents

Procédé pour optimiser une phase de rinçage d'une machine à laver, ainsi que machine à laver convenant à ce procédé

Info

Publication number
EP2408958A1
EP2408958A1 EP10708185A EP10708185A EP2408958A1 EP 2408958 A1 EP2408958 A1 EP 2408958A1 EP 10708185 A EP10708185 A EP 10708185A EP 10708185 A EP10708185 A EP 10708185A EP 2408958 A1 EP2408958 A1 EP 2408958A1
Authority
EP
European Patent Office
Prior art keywords
rinsing
water
softener
fabric softener
sensor
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
EP10708185A
Other languages
German (de)
English (en)
Other versions
EP2408958B1 (fr
Inventor
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 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
Priority to PL10708185T priority Critical patent/PL2408958T3/pl
Publication of EP2408958A1 publication Critical patent/EP2408958A1/fr
Application granted granted Critical
Publication of EP2408958B1 publication Critical patent/EP2408958B1/fr
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
    • 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
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
    • 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
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

Definitions

  • the invention relates to a method for optimizing a rinsing phase in a washing machine with a program control for controlling a program sequence, a rotatably mounted in a tub drum, a water inlet system, a dispenser, a at the bottom of the tub arranged lye drain system with a drain pump, a drive motor for the drum and a sensor for the presence of fabric softener in a rinsing liquid contained in the tub, wherein the rinsing phase comprises at least a first step and a final step, and a particularly suitable for performing this method washing machine.
  • DE 196 50 915 B4 describes a liquid-conducting domestic appliance with a program control and a conductance sensor, by which the conductance of a liquid in the range of the domestic appliance can be determined, with the help of the results of Leitwertress a contained in the liquid detergent substance is identified and dependent on detected conductivity and the recognized type of cleaner a predefined program is executed.
  • EP 0 649 933 B1 describes a washing machine with controlled detergent consumption and a control method.
  • the washing machine includes means for detecting the detergent concentration in the washing liquid and means for estimating the optimum detergent concentration and means for indicating to the user the result of the comparison between the detected detergent concentration and the estimated optimum detergent concentration.
  • DE 103 47 766 A1 describes a household appliance that can perform a cleaning process using cleaning liquid, with a system for supplying detergent into the cleaning liquid.
  • a sensor detects in the Cleaning liquid the content of washing-active substances during the cleaning process.
  • a metering device is present, which supplies the cleaning fluid at too low a content of detergent-active substances additional detergent or at too high a content of washing-active substances fresh water.
  • the sensor is preferably a surfactant sensor which determines the surfactant content in the cleaning fluid by means of a bubble pressure method.
  • a method for level-independent determination of the surface tension of liquid substances is known, which is preferably suitable for determining and influencing the quality of fleets during washing and / or rinsing of soiled or clean textile.
  • a gaseous volume flow is introduced into the liquid to be measured and measured and evaluated during the bubble breaks the bubble pressure and / or the flow rate.
  • DE 100 42 846 A1 describes a method for the qualitative and / or quantitative characterization of polar constituents in liquids by impedance measurement and the application of the method and optionally an electrode arrangement for controlling the surfactant feed due to the characterization of the surfactant content in the washing and / or rinsing water of washing machines.
  • DE 10 2007 041 069 A1 describes a method for the detection of fabric softener in a washing machine with a program control for controlling a program flow, a rotatably mounted in a tub drum, a water inlet system, arranged at the bottom of the tub lye drain system with a drain pump, a drive motor for the drum and a sensor, wherein in a washing process after a washing or rinsing step, in particular after a rinsing step with clear water, detects a signal from the sensor and evaluated by comparison with a reference signal with regard to the presence of fabric softener in a rinsing liquid.
  • the duration of the softening step and / or subsequent rinsing steps, the temperature of the rinsing liquid, the number of revolutions of the drum, etc. can be determined.
  • a washing program following the actual washing step and at least one rinsing step in which only washing water remains used for rinsing out, at the request of the user a rinse with a softener.
  • the metering of softener in the liquid is usually carried out by adding an empirical or prescribed amount of fabric softener. For the calculation of an optimal concentration of fabric softener, the dependence on several factors such as temperature and hardness of the water as well as type and quantity of the laundry must be considered.
  • the duration of the softening depends on the amount of fabric softener used.
  • the object of the present invention was therefore to provide a method for further improving a rinsing phase in a program-controlled washing machine and a program-controlled washing machine suitable for this purpose.
  • the invention thus relates to a method for optimizing a rinsing phase in a washing machine with a program control for controlling a program sequence, a drum rotatably mounted in a tub, a water supply system, a Ein Togetherschale, arranged at the bottom of the tub lye drain system with a drain pump, a drive motor for the drum and a sensor for the presence of fabric softener in a rinsing liquid in the tub, the rinsing phase comprising at least a first step and a last step, and in which method in the last step alternatively a rinsing step with water only and a rinsing step with water and softener are provided that in the last step, a rinsing liquid in the Lye container is admitted and a signal of the sensor is detected, this signal is evaluated by comparison with a reference signal S R ⁇ f with respect to the presence of fabric softener in the rinse liquid that occurs without a detected presence of fabric softener rinsing step only with
  • the washing mechanism is generally understood to be the introduction of mechanical energy into the laundry items to be treated, in particular to be washed or rinsed, in the drum.
  • the washing mechanism W M comprises a switch-on time [in%], a duration of a reversing cycle [in seconds] and a rotational speed [rpm] of the drum.
  • the turn-on time [in%] and the speed [rpm] of the drum are respectively reduced by at least 20%, preferably by at least 50%, and the duration of a reversing cycle [in seconds] compared to the first final-rinse step at least 20%, preferably increased by at least 50%.
  • the turn-on time is that time portion of the wash phase during which the drum is rotating. This switch-on time is preferably 60 to 70% in the first rinse step. In a detected presence of fabric softener according to the invention, the turn-on time in a preferred embodiment would be reduced by at least 20%. In this preferred example, this would correspond to a turn-on time of at most 48 to 56%.
  • a reversing cycle is generally the period that results from the periods: rotating the drum in one direction, resting the drum, rotating the drum in the opposite direction, resting the drum.
  • a reversing cycle preferably has a duration of 30 to 50 seconds in the first rinse step.
  • Reversing cycle increased by at least 20%. In this preferred example, this corresponds to a switch-on time of at least 36 to 60%.
  • two alternative, mutually different rinsing steps are provided for the last step of the rinsing phase, one of which is provided especially for the absence of fabric softener and the other especially for the presence of fabric softener.
  • an optimized rinsing step for rinsing the laundry without fabric softener and on the other hand an optimized rinsing step for achieving the best possible effect of the fabric softener used can be offered.
  • drying liquid refers to the liquid that is present in the tub for a rinsing step, which generally contains components of the wash liquor used in previous process steps, which are extracted from the wash during the rinsing step contain.
  • the water may be heated and / or more water used to achieve improved wicking of the softener surfactants.
  • the presence of fabric softener in a rinse liquid is determined by a suitable sensor.
  • a suitable sensor for determining the amount of a fabric softener in the tub, the sensor signal can be followed during the inventive method, preferably an optical sensor, a tensiometer or a conductivity sensor is used.
  • An optical sensor measures optical properties of the washing liquid, which differ for water containing water and fabric softener. Accordingly, in one Rinse liquid the presence of fabric softener can be determined qualitatively and quantitatively.
  • a tensiometer is a simple, dynamic measuring system for determining the level of fabric softener in the rinsing liquid.
  • a signal proportional to the surface tension of the liquid is produced by the so-called bubble pressure method, which corresponds to the concentration of fabric softener.
  • a tensiometer operating according to the bubble pressure method has at least one capillary which leads into the cleaning liquid and from which a predetermined gas flow with a certain capillary pressure escapes with the formation of bubbles in the liquid.
  • the gas used in this case is, for example, air.
  • a conductivity sensor generally comprises two electrodes arranged in the liquid to be examined, which allow a statement about the qualitative and quantitative presence of fabric softener via the conductivity measured between them.
  • optical sensor or a conductivity sensor is used.
  • the reference signal for the sensor is obtained by measuring the corresponding signal of water from a preceding water inlet with the aid of this sensor.
  • water inlets from previous rinsing steps from timely water inlets via adjacent chambers, e.g. a prewash chamber, or water inlets in previous washing programs / process steps are used for the determination of the reference signal.
  • the reference signal is stored in the program control of the washing machine.
  • the evaluation of the presence of fabric softener in a rinse liquid by Comparison of the signal measured on the sensor with the reference signal stored in the program control.
  • At least the signal of a rinsing liquid introduced into the suds container after the first rinse is measured by the sensor.
  • evaluation with regard to the presence of softener means an evaluation with regard to the qualitative and possibly quantitative presence of fabric softener Depending on the requirement, it may be sufficient in the process according to the invention for the presence of fabric softener to be qualitatively determined.
  • a quantitative determination of the plasticizer is preferably carried out by means of the sensor.
  • data stored in a memory of the program control may be used for the relationship between the type and concentration of fabric softener and the respective signal (for example conductivity, surface tension, optical characteristics).
  • a result of the evaluation regarding the presence of fabric softener in the form of an optical and / or acoustic signal is output.
  • a "result of the evaluation" in the sense of the present invention may in this case merely be the statement that fabric softener is present or absent, or it may also be a statement about the fact or extent of too high or too low a concentration of fabric softener.
  • the content of fabric softener determined by the sensor during the method according to the invention can be determined via suitable optical and / or acoustic Display means are displayed so that an operator can make the addition of plasticizer during operation of the washing machine independently due to the indicated concentration value.
  • an acoustic signal display could be used, e.g. one or more buzzers with different sounds or clays, or a speech synthesizer with messages such as "fabric softener missing” or “too little fabric softener” or “fabric softener correct.”
  • a speech synthesizer with messages such as "fabric softener missing” or “too little fabric softener” or “fabric softener correct.”
  • Corresponding qualitative and quantitative information on the presence of fabric softener in the rinse liquid can be obtained via optical display devices such as LED - or LCD display devices are given.
  • the rinse phase is adapted to a result of the evaluation with regard to the presence of fabric softener.
  • a softening step is carried out, in which the washing mechanism W M 1 is reduced as described in detail above.
  • an optionally determined by the sensor amount of fabric softener with regard to the duration of the fabric softening phase, the temperature of the washing liquid, the number of revolutions of the drum, etc. are taken into account.
  • a second rinse step may be performed.
  • the invention also relates to a washing machine with a program control for controlling a program sequence, a rotatably mounted in a tub drum, a water inlet system, a Ein Togetherschale, arranged at the bottom of the tub lye drain system with a drain pump, a drive motor for the drum and a sensor for the Presence of fabric softener in a rinse liquid in the tub, the program controller being arranged to optimize a rinse phase, the rinse phase comprising at least a first step and a last step;
  • the program control is arranged to carry out the rinsing phase in such a manner that in the last step, alternatively, a rinsing step with water only and a rinsing step with water and softener are provided are that in the last step, a rinsing liquid is admitted into the tub and a signal of the sensor is detected, this signal is evaluated by comparison with a reference signal S R ⁇ f with respect to the presence of fabric softener in the rinse that without a detected presence
  • an optical sensor In the washing machine according to the invention, an optical sensor, a tensiometer or a conductivity sensor is preferably used as the sensor.
  • the washing machine comprises a metering device for the softener.
  • the dosing device for the softener can supply softener if the level of fabric softener in the rinse liquid is too low.
  • the sensor can cause the liquid to be additionally supplied with water if the content of fabric softener is too high.
  • the preferably automatically functioning metering device advantageously delivers only the amount of softener required on the basis of the concentration of fabric softener determined by the sensor to the dishwashing liquid.
  • the washing machine comprises means for determining an optimum amount of softener depending on the type and amount of loading with laundry and / or the properties of the water used (eg Water hardness, temperature). In this way, the washing machine can determine and regulate the amount of fabric softener in the rinse liquid required for an optimum softening effect.
  • the properties of the water used eg Water hardness, temperature
  • the loading amount can be determined by a known measure.
  • the laundry in the drum absorbs water, which therefore can not contribute to an increase in the hydrostatic pressure.
  • the amount of laundry (load) can be determined.
  • the duration of the softening phase can be tuned very precisely to the predetermined amount of laundry.
  • the evaluation of the signals supplied by the sensor and the evaluation of the content of softener in the rinsing liquid as well as a possibly resulting control of the supply of softener and / or water are preferably carried out by an electronic control of the washing machine.
  • the optimal amount of fabric softener may be approximately known based on empirical data and stored in the memory of the washing machine. Then the amount of water and the amount of softener can be specified in a softening program.
  • the invention has numerous advantages.
  • the inventive method has the advantage that in a rinse phase fabric softener in a rinsing liquid can be qualitatively and possibly quantitatively detected and then a softening phase can be optimally performed. This can be done a better and more economical application of fabric softener.
  • the user of the washing machine can also be set out the advantages of sensors in a transparent manner.
  • FIG. Figure 1 is a schematic representation of the presently relevant parts of a washing machine, in which a method according to the invention can be carried out.
  • the washing machine of the embodiment shown in Figure 1 comprises a tub 1, in which a drum 2 rotatably mounted and can be operated by a drive motor 14.
  • a small angle eg 13 °
  • a sensor 15 is arranged for the presence of fabric softener.
  • 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 is guided via a dispenser 11, from which the feed water detergent portions in the tub 1 can transport.
  • Ein Hughesschale 11 has a separate softener compartment 18, in which also a sensor 15 is arranged for the presence of fabric softener.
  • a heater 13 in the tub 1, a heater 13.
  • 16 means a pump for the liquid in the tub 1.

Landscapes

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

Abstract

L'invention porte sur un procédé pour optimiser une phase de rinçage d'une machine à laver, comportant un tambour 2 monté à rotation dans une cuve de lavage 1, et un capteur 15 pour la présence d'un assouplissant dans un liquide de rinçage se trouvant dans la cuve de lavage 1, la phase de rinçage comprenant au moins une première étape et une dernière étape. Dans la dernière étape, il est prévu en alternance une étape de rinçage uniquement avec de l'eau, et une étape de rinçage avec de l'eau et avec un assouplissant. Dans la dernière étape, on introduit un liquide de rinçage dans la cuve de lavage 1, et on détecte un signal du capteur 15, et on évalue ce signal par comparaison avec un signal de référence SRef pour ce qui est de la présence de l'assouplissant dans le liquide de rinçage. Si la présence de l'assouplissant n'est pas détectée, l'étape de rinçage s'effectue uniquement avec de l'eau ; si l'on a détecté la présence d'un assouplissant, l'étape de rinçage s'effectue avec de l'eau et avec l'assouplissant, à l'occasion de quoi on abaisse d'au moins 15 %, par comparaison avec l'étape de rinçage utilisant uniquement de l'eau, un coefficient mécanique de lavage WM, le coefficient mécanique de lavage WM comprenant un temps d'enclenchement [en %], une durée d'un cycle réversible [en seconde] et une vitesse de rotation [tours/minute] du tambour 2, le temps d'enclenchement [en %] et la vitesse de rotation [en tours/minute] du tambour 2 subissant chacun une diminution d'au moins 20 %, la durée d'un cycle réversible [en secondes] étant augmentée d'au moins 20 %. L'invention porte aussi sur une machine à laver configurée de façon à mettre en oeuvre ce procédé.
EP10708185A 2009-03-16 2010-03-09 Procédé pour optimiser une phase de rinçage d'une machine à laver, ainsi que machine à laver convenant à ce procédé Active EP2408958B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10708185T PL2408958T3 (pl) 2009-03-16 2010-03-09 Sposób optymalizacji fazy płukania w pralce automatycznej oraz nadająca się do tego pralka automatyczna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009001582 2009-03-16
PCT/EP2010/052944 WO2010105937A1 (fr) 2009-03-16 2010-03-09 Procédé pour optimiser une phase de rinçage d'une machine à laver, ainsi que machine à laver convenant à ce procédé

Publications (2)

Publication Number Publication Date
EP2408958A1 true EP2408958A1 (fr) 2012-01-25
EP2408958B1 EP2408958B1 (fr) 2013-01-23

Family

ID=42125337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10708185A Active EP2408958B1 (fr) 2009-03-16 2010-03-09 Procédé pour optimiser une phase de rinçage d'une machine à laver, ainsi que machine à laver convenant à ce procédé

Country Status (6)

Country Link
US (1) US9481957B2 (fr)
EP (1) EP2408958B1 (fr)
CN (1) CN102356190B (fr)
EA (1) EA019827B1 (fr)
PL (1) PL2408958T3 (fr)
WO (1) WO2010105937A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9334600B2 (en) * 2011-04-20 2016-05-10 General Electric Company Fabric softener sensing and reuse of grey water from the rinse cycle of a washing machine
DE102011083578B4 (de) 2011-09-28 2019-10-24 BSH Hausgeräte GmbH Verfahren zur Weichspülung von Wäsche in einer Waschmaschine sowie hierzu geeignete Waschmaschine
AU2017272753B9 (en) 2016-05-31 2021-12-16 Kao Corporation Method for cleaning clothing
KR20200144820A (ko) * 2019-06-19 2020-12-30 삼성전자주식회사 세탁기의 제어 방법 및 세탁기
KR20210047109A (ko) 2019-10-21 2021-04-29 엘지전자 주식회사 세탁기 및 그 제어 방법

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DE3904222A1 (de) * 1989-02-13 1990-08-16 Lang Apparatebau Gmbh Verfahren und vorrichtung zur programmablaufsteuerung von waschmaschinen
DE3907357A1 (de) * 1989-03-08 1990-09-13 Licentia Gmbh Verfahren zum spuelen von in einer programmgesteuerten trommelwaschmaschine gewaschenen waesche
IT1261006B (it) 1993-10-26 1996-04-29 Merloni Elettrodomestici Spa Macchina di lavaggio a consumo di detersivo controllato, e relativo metodo di controllo.
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Also Published As

Publication number Publication date
EP2408958B1 (fr) 2013-01-23
PL2408958T3 (pl) 2013-06-28
US20120005842A1 (en) 2012-01-12
WO2010105937A1 (fr) 2010-09-23
CN102356190A (zh) 2012-02-15
US9481957B2 (en) 2016-11-01
EA019827B1 (ru) 2014-06-30
CN102356190B (zh) 2014-01-01
EA201171118A1 (ru) 2012-06-29

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