EP4368763B1 - Procédé de fonctionnement d'un automate de lavage et automate de lavage - Google Patents

Procédé de fonctionnement d'un automate de lavage et automate de lavage Download PDF

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Publication number
EP4368763B1
EP4368763B1 EP23203693.9A EP23203693A EP4368763B1 EP 4368763 B1 EP4368763 B1 EP 4368763B1 EP 23203693 A EP23203693 A EP 23203693A EP 4368763 B1 EP4368763 B1 EP 4368763B1
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EP
European Patent Office
Prior art keywords
liquid
washing drum
textiles
suds container
fill level
Prior art date
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EP23203693.9A
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German (de)
English (en)
Other versions
EP4368763C0 (fr
EP4368763A1 (fr
Inventor
Markus Drücker
Dirk Sieding
Elisabeth Hölscher
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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Publication date
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Publication of EP4368763A1 publication Critical patent/EP4368763A1/fr
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Publication of EP4368763C0 publication Critical patent/EP4368763C0/fr
Publication of EP4368763B1 publication Critical patent/EP4368763B1/fr
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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
    • 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
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • 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
    • D06F2103/14—Supply, recirculation or draining of washing liquid
    • 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
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • the invention relates to a method for operating a washing machine according to claim 1. Furthermore, the present application relates to a washing machine for washing textiles according to claim 12.
  • the washing machine comprises a tub in which a washing drum is mounted so as to be rotatably driven. Furthermore, the washing machine has a drum drive, by means of which the washing drum can be driven so as to rotate about its axis of rotation.
  • the washing machine further comprises a circulation pump, by means of which liquid in the tub can be circulated into the tub, wherein the circulation pump is configured such that the liquid can be conveyed onto textiles located in the washing drum.
  • the DE 10 2016 212490 A1 discloses a laundry care appliance with a tub, a laundry drum, a controller, and a pumping device.
  • the controller is configured to determine the load of the laundry drum with laundry depending on the detected duration of the pumping time.
  • the washing drum speed can be increased to the base speed before the circulation pump is switched on. Starting from a starting value, for example, 300 rpm, the washing drum is gradually accelerated. Due to the deactivated circulation pump, liquid is expelled from the fabrics and collected in the tub.
  • the expulsion speed is automatically selected by the control device depending on the amount of liquid. This procedure follows the consideration that if the total amount of liquid introduced into the tub is small, the volume flow of liquid expelled from the textiles will presumably also be small and therefore more difficult to measure.
  • the extent to which the speed of the washing drum should be increased from the base speed i.e. the amount by which the expulsion speed should be, is therefore preferably made dependent on the amount of liquid present. The rule here is that the smaller the amount, the higher the expulsion speed.
  • the expulsion speed is automatically determined by the control device depending on both the amount of liquid introduced into the tub and the mass of all textiles in the washing drum. This automatically determines the expulsion speed for each individual case, allowing the average volume flow to be determined with particular reliability.
  • the function of the expulsion speed as a function of the mass of the textiles and the amount of liquid can be determined in advance based on empirical studies.
  • the washing machine is particularly advantageous if it has at least one inlet sensor for detecting information regarding the amount of liquid introduced into the tub.
  • the inlet sensor can, in particular, be designed to determine the volume of all liquid introduced into the tub.
  • the inlet sensor can be formed, for example, by an impeller meter.
  • such a washing machine can be advantageous in which at least one fill level sensor is formed by a pressure sensor or a contact sensor.
  • the fill level sensor is designed as a pressure sensor, it can preferably be assigned to a base of the tub, i.e. act in particular in the base of the tub. In this way, a hydraulic pressure of liquid in the tub can be determined using the fill level sensor, whereby a conclusion can be drawn about the fill level of the tub, measured from the base. Accordingly, the fill level of the tub can be determined particularly well using such a fill level sensor. With knowledge of the geometry of the tub, the volume of liquid in the tub can also be determined based on this information.
  • the fill level sensor is formed by a contact sensor, it is advantageous if it is arranged at a vertically measured distance from the bottom of the lye container.
  • the information from the fill level sensor can be interpreted to mean that at the moment the fill level sensor comes into contact with liquid, the lye container is filled with a specific volume of liquid, which corresponds to a fill level of the lye container with liquid corresponding to the distance of the fill level sensor from the bottom of the lye container. Knowing the geometry of the lye container, the volume of liquid in the lye container is thus known.
  • the washing machine comprises a plurality of fill level sensors arranged at different distances from the bottom of the tub.
  • the times can be defined in particular by the fact that the fill level sensors each came into contact with the liquid for the first time. From this, it can be concluded that the tub at these times is or was filled with a volume of liquid that corresponds to a fill level of the tub that corresponds to the distance of the respective fill level sensor from the bottom of the tub.
  • the fill level sensors are particularly well suited to defining the beginning and end of the expulsion period, while the volumes that correspond to the detected fill levels are particularly well suited to determining the volume that was expelled from the textiles during the expulsion period.
  • the fill level sensors are preferably formed by contact sensors.
  • FIG. 1 An example of implementation that is shown in the Figures 1 and 2 , comprises a washing machine 1 comprising a tub 2 and a washing drum 4 that can be driven in rotation within the tub 2.
  • the washing drum 4 is mounted so as to be rotatable about a rotation axis 3 , wherein the washing drum 4 can be driven in rotation by means of a drum drive not shown in the figure.
  • Textiles 6 that are to be washed by the washing machine 1 are stored in the washing drum 4 .
  • the washing machine 1 further comprises a circulation pump 5, which is provided and configured to direct liquid contained in the tub 2 onto the textiles 6 located in the washing drum 4.
  • the circulation pump 5 interacts with a liquid line 7 , which directs the circulated liquid to an upper end of the washing drum 4 , so that the circulated liquid can fall from above onto the textiles 6.
  • a nozzle (not shown in the figure) can be arranged at an end of the liquid line 7 facing away from the circulation pump 5.
  • the suction of the liquid from the tub 2 by means of the circulation pump 5 takes place in the region of the bottom 13 of the tub 2, so that the circulation pump 5 can remove all of the liquid contained in the tub 2 from the tub 2 .
  • the washing machine 1 comprises a supply line 14, by means of which liquid can be introduced into the tub 2 from a liquid supply (not shown in the figure).
  • a pump 15 is provided to convey the liquid into the tub 2.
  • an inlet sensor 10 which here is formed by an impeller meter, is arranged in the supply line 14. The inlet sensor 10 is thus suitable for detecting information regarding the volume of liquid introduced into the tub 2 .
  • the washing machine 1 further comprises a fill level sensor 8. This is assigned to the bottom 13 of the tub 2.
  • the fill level sensor 8 is formed here by a pressure sensor, which is provided and configured to continuously detect information relating to a hydraulic pressure present at a sensor surface, which acts on the pressure sensor in the form of a water column.
  • the detected hydraulic pressure directly determines the height of a liquid level within the tub 2 at which the liquid stands at a given point in time. In other words, this determines the fill level of the tub 2.
  • This information is sent to a control device 9 of the washing machine 1 , so that the control device 9 can use the information acquired by the fill level sensor 8 to control the operation of the washing machine 1.
  • the control device 9 is also connected to the inlet sensor 10 in a data-transmitting manner, so that the information acquired by the inlet sensor 10 can be sent to the control device 9 and likewise processed by it.
  • the mass of all textiles 6 present in the dry state in the washing drum 4 is first determined using an inertia method.
  • the washing drum is loaded with 2.0 kg of laundry.
  • Liquid is then introduced into the tub 2 through the supply line 14 by means of the pump 15.
  • the volume of the total introduced liquid is recorded using the inlet sensor 10.
  • the washing drum 4 is then rotated about its axis of rotation 3 by means of the drum drive, and at the same time the circulation pump 5 is operated to introduce the introduced liquid into the textiles 6.
  • the circulation pump 5 is initially deactivated so that, as a result of the continued rotation of the washing drum 4, liquid is expelled from the textiles 6 and collects in the tub 2 .
  • the speed of the washing drum 4 is gradually increased, for example with an acceleration of 20 rpm per second.
  • This is Figure 2 particularly well recognizable by a speed curve 16 which in a coordinate system shows the speeds on its x-axis 17
  • the time recorded in seconds is correlated with the revolutions of the washing drum 4 per minute recorded on its y-axis 18.
  • the fill level of the tub 2 is continuously recorded by the fill level sensor 8.
  • the speed of the washing drum 4 is no longer increased.
  • the reached speed level then forms the base speed 11.
  • the circulation pump 5 is then reactivated, thus concluding the preparatory phase of the process.
  • the washing drum 4 initially continues to rotate at its previously determined base speed 11.
  • the circulation pump 5 By means of the circulation pump 5 , the liquid in the tub 2 is directed via the liquid line 7 onto the textiles 6 in the washing drum 4. In the example shown, this process is maintained until the fill level sensor 8 detects that the fill level in the tub 2 is 0 mm water column. In other words, at this point in time, all of the liquid in the tub 2 has been introduced into the textiles 6.
  • the circulation pump 5 is deactivated, while the washing drum 4 continues to operate at the base speed 11. The speed of the washing drum 4 is then accelerated from the base speed 11 to a previously defined expulsion speed 12 .
  • the volume flow of the expelled liquid is such that a change in the fill level can be easily detected by the fill level sensor 8. Since the fill level of the suds container 2 is continuously detected, here at a frequency of 200 Hz, information is available regarding a change in the fill level over time. At a defined point in time after the circulation pump 5 is switched off, for example after 20 seconds, the fill level of the suds container 2 at that time is detected.
  • a corresponding volume of the liquid that is or was in the suds container 2 at that time is determined for the fill level that existed at the defined time.
  • the value of this volume which corresponds to the fill level of the suds container 2 , can be known, in particular, from a previous determination. Since the fill level of the suds container 2 was zero at the time the circulation pump 5 was switched off, the volume determined at the defined time corresponds to the volume that has been expelled from the textiles 6 since the circulation pump 5 was switched off.

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

Claims (14)

  1. Procédé permettant le fonctionnement d'un lave-linge automatique (1), le lave-linge automatique (1) comprenant
    - une cuve de lessive (2),
    - un tambour de lavage (4) disposé dans la cuve de lessive (2) et pouvant être entraîné en rotation autour d'un axe de rotation (3),
    - un entraînement de tambour pour l'entraînement en rotation du tambour de lavage (4) autour de son axe de rotation (3),
    - une pompe de circulation (5) pour le transport du liquide se trouvant dans la cuve de lessive (2) sur les textiles (6) se trouvant dans le tambour de lavage (4),
    - au moins un capteur de niveau de remplissage (8) pour l'acquisition d'informations concernant un niveau de remplissage de la cuve de lessive (2) avec du liquide,
    - un dispositif de commande (9),
    le procédé comprenant les étapes de procédé suivantes :
    a) le tambour de lavage (4) est entraîné en rotation autour de son axe de rotation (3) à une vitesse de rotation de base (11) ;
    b) la pompe de circulation (5) est actionnée pour refouler le liquide se trouvant dans la cuve de lessive (2) sur les textiles (6) jusqu'à ce que les informations acquises par le capteur de niveau de remplissage (8) indiquent que le niveau de remplissage de la cuve de lessive (2) a atteint une valeur définie au préalable ;
    c) une fois que le niveau de remplissage a atteint la valeur définie, la pompe de circulation (5) est arrêtée ;
    d) le tambour de lavage (4) est davantage entraîné en rotation, moyennant quoi le liquide est expulsé des textiles (8) et recueilli dans la cuve de lessive (2), dans lequel la vitesse de rotation du tambour de lavage (4) est augmentée de la vitesse de base (11) à une vitesse d'expulsion (12) ;
    e) des informations concernant le niveau de remplissage de la cuve de lessive (2) sont acquises à l'aide du capteur de niveau de remplissage (8) et transmises au dispositif de commande (9) ;
    f) les informations sont traitées à l'aide du dispositif de commande (9) de telle sorte qu'un volume de liquide expulsé, déterminé à l'aide d'au moins un niveau de remplissage, est divisé par une durée d'une période d'expulsion, moyennant quoi un débit volumétrique du liquide expulsé, moyenné sur la période d'expulsion, est déterminé.
  2. Procédé selon la revendication 1, caractérisé en ce que le niveau de remplissage, en présence duquel la pompe de circulation (5) est arrêtée, est de 0 mm de colonne d'eau.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la période d'expulsion commence en même temps que l'arrêt de la pompe de circulation (5) ou après l'arrêt de la pompe de circulation (5).
  4. Procédé selon la revendication 3, caractérisé en ce que le tambour de lavage (4) fonctionne à la vitesse d'expulsion (12) pendant au moins une partie de la période d'expulsion, de préférence pendant toute la période d'expulsion.
  5. Procédé selon l'une des revendications précédentes, caractérisé par une étape de préparation au cours de laquelle la vitesse de rotation du tambour de lavage (4) est successivement augmentée jusqu'à la vitesse de rotation de base (11), la pompe de circulation (5) étant arrêtée.
  6. Procédé selon la revendication 5, caractérisé en ce que la vitesse de rotation du tambour de lavage (4) pour laquelle le niveau de remplissage de la cuve de lessive (2) atteint une valeur préalablement définie est définie comme vitesse de base (11), dans lequel l'augmentation de la vitesse de rotation est de préférence arrêtée au moment où ladite valeur est atteinte, de sorte que la vitesse de rotation du tambour de lavage (4) reste au moins temporairement au niveau de la vitesse de base (11).
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'une masse de tous les textiles (6) se trouvant dans le tambour de lavage (4) est déterminée, en particulier à l'aide d'un procédé d'inertie de masse, dans lequel la masse des textiles (6) est de préférence déterminée alors que ceux-ci se trouvent dans un état sec.
  8. Procédé selon la revendication 7, caractérisé en ce que la vitesse d'expulsion (12) est choisie automatiquement à l'aide du dispositif de commande (9) en fonction de la masse de tous les textiles se trouvant dans le tambour de lavage (4).
  9. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'une quantité de liquide introduite dans la cuve de lessive (2) est détectée, en particulier à l'aide d'un capteur d'entrée (10).
  10. Procédé selon la revendication 9, caractérisé en ce que la vitesse d'expulsion (12) est choisie automatiquement à l'aide du dispositif de commande (9) en fonction de la quantité de liquide introduite dans la cuve de lessive (2).
  11. Procédé selon les revendications 8 et 10, caractérisé en ce que la vitesse d'expulsion (12) est choisie automatiquement à l'aide du dispositif de commande (9) en fonction aussi bien de la masse de tous les textiles se trouvant dans le tambour de lavage (4) que de la quantité de liquide introduite dans la cuve de lessive (2).
  12. Lave-linge automatique (1) pour le lavage de textiles (6), comprenant
    - une cuve de lessive (2),
    - un tambour de lavage (4) disposé dans la cuve de lessive (2) et pouvant être entraîné en rotation autour d'un axe de rotation (3),
    - un entraînement de tambour pour l'entraînement en rotation du tambour de lavage (4) autour de son axe de rotation (3),
    - une pompe de circulation (5) pour le transport du liquide se trouvant dans la cuve de lessive (2) sur les textiles (6) se trouvant dans le tambour de lavage (4),
    - au moins un capteur de niveau de remplissage (8) pour l'acquisition d'informations concernant un niveau de remplissage de la cuve de lessive (2) avec du liquide,
    - un dispositif de commande (9),
    dans lequel le dispositif de commande (9) est relié au capteur de niveau de remplissage (8) de manière à transmettre des données,
    dans lequel le dispositif de commande (9) est prévu et disposé pour faire fonctionner l'entraînement de tambour et la pompe de circulation (5) en fonction des informations acquises par le capteur de niveau de remplissage (8) comme suit :
    a) le tambour de lavage (4) est entraîné en rotation autour de son axe de rotation (3) à une vitesse de rotation de base (11) ;
    b) la pompe de circulation (5) est actionnée pour refouler le liquide se trouvant dans la cuve de lessive (2) sur les textiles (6) jusqu'à ce que les informations acquises par le capteur de niveau de remplissage (8) indiquent que le niveau de remplissage de la cuve de lessive (2) a atteint une valeur définie au préalable ;
    c) une fois que le niveau de remplissage a atteint la valeur définie, la pompe de circulation (5) est arrêtée ;
    d) le tambour de lavage (4) est davantage entraîné en rotation, moyennant quoi le liquide est expulsé des textiles (8) et recueilli dans la cuve de lessive (2), dans lequel la vitesse de rotation du tambour de lavage (4) est augmentée de la vitesse de base (11) à une vitesse d'expulsion (12) ;
    e) des informations concernant le niveau de remplissage de la cuve de lessive (2) sont acquises à l'aide du capteur de niveau de remplissage (8) et transmises au dispositif de commande (9) ;
    f) les informations sont traitées à l'aide du dispositif de commande (9) de telle sorte qu'un volume de liquide expulsé, déterminé à l'aide d'au moins un niveau de remplissage, est divisé par une durée d'une période d'expulsion, moyennant quoi un débit volumétrique du liquide expulsé, moyenné sur la période d'expulsion, est déterminé.
  13. Lave-linge automatique (1) selon la revendication 12, caractérisé par au moins un capteur d'entrée (10) pour l'acquisition d'informations concernant une quantité de liquide introduite dans la cuve de lessive (2).
  14. Lave-linge automatique (1) selon la revendication 12 ou 13,
    caractérisé en ce que le capteur de niveau de remplissage (8) est conçu comme un capteur de pression, dans lequel le capteur de niveau de remplissage (8) est de préférence disposé dans une zone de fond d'un fond (13) de la cuve de lessive (2).
EP23203693.9A 2022-11-09 2023-10-16 Procédé de fonctionnement d'un automate de lavage et automate de lavage Active EP4368763B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE20225910A BE1031021B1 (de) 2022-11-09 2022-11-09 Verfahren zum Betrieb eines Waschautomaten sowie Waschautomat

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EP4368763A1 EP4368763A1 (fr) 2024-05-15
EP4368763C0 EP4368763C0 (fr) 2025-07-09
EP4368763B1 true EP4368763B1 (fr) 2025-07-09

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431654C2 (de) * 1994-09-06 1998-11-26 Miele & Cie Verfahren zum Füllen eines Laugenbehälters einer Waschmaschine
DE102014220021B3 (de) * 2014-10-02 2016-02-04 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Steuerelement
DE102016212490A1 (de) * 2016-07-08 2018-01-11 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
DE102019207240A1 (de) * 2019-05-17 2020-11-19 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

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EP4368763C0 (fr) 2025-07-09
BE1031021A1 (de) 2024-06-06
EP4368763A1 (fr) 2024-05-15
BE1031021B1 (de) 2024-06-10

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