EP0709512B1 - Procédé pour déterminer le niveau de remplissage dépendant de la nature et de la quantité du linge - Google Patents

Procédé pour déterminer le niveau de remplissage dépendant de la nature et de la quantité du linge Download PDF

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Publication number
EP0709512B1
EP0709512B1 EP95116020A EP95116020A EP0709512B1 EP 0709512 B1 EP0709512 B1 EP 0709512B1 EP 95116020 A EP95116020 A EP 95116020A EP 95116020 A EP95116020 A EP 95116020A EP 0709512 B1 EP0709512 B1 EP 0709512B1
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EP
European Patent Office
Prior art keywords
loading stage
washing
program
speed
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95116020A
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German (de)
English (en)
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EP0709512A1 (fr
Inventor
Rüdiger Olschewski
Wilhelm Sebeikat
Dirk Sieding
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
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Miele und Cie KG
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Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP0709512A1 publication Critical patent/EP0709512A1/fr
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Publication of EP0709512B1 publication Critical patent/EP0709512B1/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
    • 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
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the invention relates to a method for determining a type of laundry and Amount of laundry dependent load level in a washing machine after the Preamble of claim 1.
  • FR-A 2 474 547 describes a washing machine that carries out a method according to the preamble of claim 1, in which the determination of the type and The amount of loading is done by counting the refueling processes.
  • the method is very imprecise for pressure switches with large switching hysteresis, pressure switches however, with small switching hysteresis lead to very long program run times due to frequent refueling.
  • a method for detecting imbalance in household washing machines is included a motor for driving the drum and a device for displaying the motor speed known in the case of that occurring during the reversing movements
  • Speed fluctuations inferred on a "laundry clumping degree” is (DE 42 21 772 A1).
  • a degree of laundry clumping cannot be achieved to evaluate loading levels and to influence the dependent ones Use consumption values.
  • the invention is based on the problem of a method for determining which is as accurate as possible a loading level depending on the type of laundry and the amount of laundry to accomplish. According to the invention, this is achieved by a method with the features of claim 1 solved.
  • the evaluation circuit determines the Loading level depending on the vibration behavior of the speed signal at Reverse in suction times, whereby the suction times refer to individual water inlets Start of the first section of the program, especially the pre-wash or main wash connect.
  • this enables a very early detection of the loading level on the other hand it is possible to determine the loading level in this Stage very accurate. This is because just not yet completely damp laundry a strong dependence of the vibration behavior of the speed signal depending on its weight and the type of laundry shows. This is caused by different distribution or clumping the loading, as well as through different friction behavior of the loading on door sealing ring and door sight glass. They also form at this stage the washing process has no imbalance due to water absorption, which also strongly influence the speed curve.
  • the washing machine drum (1) is in a washing machine for performing the The inventive method in a known manner in the tub (2) rotatable stored. It is driven by a motor (3).
  • Tachometer generator (4) taps an engine speed signal n (t) for control purposes.
  • the drainage area (5) of the tub (2) provide a riser (6) within which a level sensor (7) is arranged.
  • the fresh water is fed into the tub (2) via a line (8), in which there is a solenoid valve (9).
  • Solenoid valves (9) preferably come with a small volume flow tolerance range over the largest possible Pressure range for use.
  • the water supply is simplified in the drawing shown so that only the inflow via the detergent dispenser drawer (10) is symbolized.
  • the incoming water is heated by a heater (11) in the drainage area (5) of the tub (2), the water temperature being regulated by a temperature sensor (12).
  • the heating (11) is only switched on after a level N max has been sensed by the level sensor (7).
  • N max When the water level drops to a level of N min, there is an immediate shutdown. This avoids dry heating.
  • FIG. 2 shows the interaction of the components for determining the loading level shown in a block diagram.
  • the central regulating and control body is the control computer ⁇ P (13) of the program control device ⁇ C (14). He takes care of it Engine speed, the water temperature and the water level in the tub (2) with the help of control elements (power section (17), heating relay (18), solenoid valve (9)), depending on the status signals it receives through the sensors (tachogenerator (4), temperature sensor (12), level sensor (7) receives.
  • the regulation takes place or control depending on the program and additionally depending on a so-called Loading level.
  • Such a loading level is essentially due to the Characterized suction capacity of the laundry, which in turn of its type and Quantity depends.
  • further program parameters for example, water volumes in individual program sections, the duration of program sections, the number of rinse cycles, spin speeds or unbalance thresholds set.
  • one of the Load level dependent program can be selected, which is particularly important for Mixed laundry is advantageous.
  • the loading level is determined via a in the program control device Integrated evaluation circuit (15), which the speed signal n (t) during the reversing cycle in a first program section, in particular in the prewash program or in the main wash program, and depending on determines a value from its vibration behavior.
  • the evaluation circuit 15) even more detected by sensors Status signals such as B. the switching times of the solenoid valves (9) and the level sensor (7) and temperature values are supplied.
  • the fluctuation in the motor current can also be evaluated become.
  • the loading stage is determined at the beginning of the first program section, in particular the pre-wash or main wash cycle during the water inlet and the moistening of the laundry.
  • 3a shows a water level-time diagram and the associated speed-time diagram with a drum load of 2 kg of cotton fabric.
  • Figure 3b shows the corresponding diagrams with a load of 4kg cotton fabric.
  • the level is controlled by a switching pressure switch with a switching point N max and a switching back point N min .
  • the first run-in takes place from the 0mm level and, as with all subsequent filling steps, with the drum stopped (1).
  • the time t E1 until the switching point N max is reached is measured.
  • the time t E1 is multiplied by a constant factor F 1 and the duty cycle of the solenoid valve (9) is extended by the time t 1 'thus obtained. In this way a filling level N Ü1.2 is reached. Then the solenoid valve (9) is closed and the drum (1) rotated. The time from closing the solenoid valve (9) to reaching the downshift level N min , the suction time t S1 , is measured and fed to the evaluation circuit.
  • the evaluation circuit determines the fluctuation range S dn of the engine speed n (t) measured with the tachometer generator (4).
  • the fluctuation range S dn is understood to mean the standard deviation of the speed signal n (t) in the steady state, ie in the region I shown, ignoring the first overshoots.
  • the time t E2 is measured from the switching on of the solenoid valve (9) at N min until the switching point N max is reached .
  • t E2 is multiplied by a constant factor F 2 and the switch-on time of the solenoid valve (9) is extended by the time t 2 'thus obtained.
  • the filling takes place when the drum (1) is stopped.
  • the drum (1) is then rotated and the fluctuation range S dn is determined again and the second suction time t S2 is measured.
  • the evaluation circuit (15) determines the loading level as a function of the fluctuation range S dn , the suction times t S1 and t S2 and the total amount of water supplied.
  • a table with loading levels B B (S dn , t Si , V) created with a fuzzy logic algorithm is stored in a memory (16), from which the evaluation circuit (15) retrieves corresponding values.
  • the amount of water V supplied can be determined via the sum of the opening times t Ei of the solenoid valve (9) or via a water meter.
  • FIG. 4 shows the vibration behavior of the speed signal processed after the water inlet phase.
  • Figure 4 shows the speed curve for a washing machine during reversing in the main wash program with different loads.
  • the evaluation circuit evaluates (15) the overshoots in the speed increase after the reverse pause, the Overshoots in the reversing pause, the fluctuation range and their temporal Changes with known control characteristics. On closer inspection, falls that the speed behavior has the following characteristics:

Claims (11)

  1. Procédé pour déterminer le niveau de charge d'un lave-linge en fonction de la nature et de la quantité de linge, lequel lave-linge comprend un tambour rotatif (1) destiné à recevoir du linge, un moteur (3) pour entraíner le tambour (1) et un dispositif destiné à fournir un signal de vitesse de rotation dépendant du régime du moteur, notamment une génératrice tachymétrique (4) pour indiquer le régime du moteur ou une résistance de mesure pour indiquer le courant du moteur, caractérisé en ce qu'un circuit d'interprétation (15) détermine le niveau de charge en fonction des oscillations du signal de la vitesse de rotation pendant le cycle d'inversion du sens de rotation au cours de la première étape du programme, notamment pendant le prélavage ou le lavage principal.
  2. Procédé selon la revendication 1, caractérisé en ce que le circuit d'interprétation (15) détermine le niveau de charge sur la base de l'amplitude d'oscillation et des pics inertiels pendant la pause précédent une inversion du sens de rotation et lors de l'accélération de la vitesse de rotation après ladite pause, tout en tenant compte de la caractéristique du régulateur de la vitesse de rotation.
  3. Procédé selon la revendication 1, caractérisé en ce que le circuit d'interprétation (15) détermine le niveau de charge en fonction des oscillations du signal de la vitesse de rotation (n(t)) lors de l'inversion du sens de rotation, en temps d'imprégnation (tS), les temps d'imprégnation (tS) faisant suite à différentes prises d'eau au début de la première étape du programme, notamment du prélavage ou du lavage principal.
  4. Procédé selon la revendication 3, caractérisé en ce que l'on interprète l'amplitude du signal de la vitesse de rotation (n(t)) en régime transitoire.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que, pour déterminer le niveau de charge, on prend en compte la durée des temps d'imprégnation (tS).
  6. Procédé pour déterminer le niveau de charge en fonction de la nature et de la quantité de linge selon l'une des revendications 1 à 5 en utilisant un détecteur de niveau à haute résolution (7), caractérisé en ce que, pour déterminer le niveau de charge, on prend en compte la variation du signal du niveau (tS1, tS2).
  7. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que, pour déterminer le niveau de charge, on prend en compte la quantité d'eau admise (V).
  8. Procédé selon la revendication 7, caractérisé en ce qu'un niveau de charge déjà établi est corrigé en prenant en compte la quantité d'eau admise.
  9. Procédé selon l'une des revendications 1 à 6 utilisant un détecteur d'eau à haute résolution (7) pour ajuster le niveau d'eau, caractérisé en ce que le niveau de charge est corrigé à l'appui du niveau d'eau après la dernière prise d'eau au début de la première étape du programme, notamment du prélavage ou du lavage principal.
  10. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le niveau de charge est corrigé à l'appui d'une mesure de la baisse de la température de l'eau de lessive à la suite d'un processus de chauffage.
  11. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que l'on tient compte du niveau de charge pour déterminer des paramètres du programme tels que les quantités d'eau dans les différentes étapes du programme, les durées des différentes étapes du programme, le nombre de rinçages, les vitesses d'essorage et les seuils de déséquilibre.
EP95116020A 1994-10-29 1995-10-11 Procédé pour déterminer le niveau de remplissage dépendant de la nature et de la quantité du linge Expired - Lifetime EP0709512B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438760 1994-10-29
DE4438760A DE4438760A1 (de) 1994-10-29 1994-10-29 Verfahren zur Ermittlung einer von der Wäscheart und der Wäschemenge abhängigen Beladungsstufe

Publications (2)

Publication Number Publication Date
EP0709512A1 EP0709512A1 (fr) 1996-05-01
EP0709512B1 true EP0709512B1 (fr) 1999-01-13

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EP95116020A Expired - Lifetime EP0709512B1 (fr) 1994-10-29 1995-10-11 Procédé pour déterminer le niveau de remplissage dépendant de la nature et de la quantité du linge

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Country Link
EP (1) EP0709512B1 (fr)
AT (1) ATE175734T1 (fr)
DE (2) DE4438760A1 (fr)
ES (1) ES2129725T3 (fr)

Cited By (1)

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DE102004049650B3 (de) * 2004-10-11 2006-03-09 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine

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DE19505414C2 (de) * 1995-02-17 1998-08-27 Miele & Cie Verfahren zur Erkennung eines Fehlers im Wasserzulauf bzw. Wasserablauf einer programmgesteuerten Wasch- oder Geschirrspülmaschine
DE19505639C2 (de) * 1995-02-18 2001-01-18 Miele & Cie Verfahren zur Überwachung des Flüssigkeitsstandes in einer Waschmaschine
CA2242994C (fr) * 1997-07-14 2008-09-16 Lg Electronics Inc. Methode de detection d'une quantite de linge dans une machine a laver a tambour
DE19946245C2 (de) * 1998-10-01 2002-09-05 Miele & Cie Verfahren zur Steuerung eines Waschprogramms
DE19947307C1 (de) * 1999-10-01 2000-11-23 Miele & Cie Verfahren zum Waschen von Wäsche in einer Waschmaschine
DE10017160C1 (de) * 2000-04-06 2001-04-05 Miele & Cie Verfahren zum Spülen von Wäsche in einer Waschmaschine
DE10062111C1 (de) * 2000-12-13 2002-07-25 Miele & Cie Verfahren zum Dosieren von Waschmittel
DE10217009C1 (de) * 2002-04-16 2003-10-16 Miele & Cie Waschverfahren für eine programmgesteuerte Trommelwaschmaschine
US7673358B2 (en) 2003-09-26 2010-03-09 Miele & Cie Kg. Method of controlling the revolutions of the drum of a program controlled laundry machine
EP1734167B1 (fr) * 2005-06-17 2007-09-26 Electrolux Home Products Corporation N.V. Procédé pour mouiller du linge et machine à laver
US20110041356A1 (en) 2006-04-05 2011-02-24 Lg Electronics, Inc. Spin drying method
ATE524593T1 (de) 2006-10-31 2011-09-15 Arcelik As Verfahren zur bestimmung des gewichts der last in einer waschmaschine mit trockner anhand der eigenfrequenzreaktion der beladenen trommel
DE102007057331A1 (de) * 2007-11-28 2009-06-04 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zur Bestimmung der optimalen Drehzahl der Trommel einer Wäschebehandlungsvorrichtung
KR100977575B1 (ko) 2008-05-23 2010-08-23 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
KR100977574B1 (ko) 2008-05-23 2010-08-23 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
KR100977576B1 (ko) 2008-05-23 2010-08-23 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
KR101028086B1 (ko) 2008-05-23 2011-04-08 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
KR101028087B1 (ko) 2008-05-23 2011-04-08 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
KR101028089B1 (ko) 2008-05-23 2011-04-08 엘지전자 주식회사 세탁물 처리기기 및 세탁물 처리기기의 제어방법
DE102014218278A1 (de) * 2014-09-12 2016-03-17 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Hausgeräts
EP3382083A1 (fr) * 2017-03-27 2018-10-03 Vestel Elektronik Sanayi ve Ticaret A.S. Procédé de détermination de mousse dans une machine à laver
DE102017219043A1 (de) 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung

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Publication number Priority date Publication date Assignee Title
DE102004049650B3 (de) * 2004-10-11 2006-03-09 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine
EP1645677A2 (fr) 2004-10-11 2006-04-12 Miele & Cie. KG Procédé pour faire fonctionner une machine à laver
US7610643B2 (en) 2004-10-11 2009-11-03 Miele & Cie. Kg Method of monitoring the rotational movement of a washing machine drum

Also Published As

Publication number Publication date
ES2129725T3 (es) 1999-06-16
EP0709512A1 (fr) 1996-05-01
DE59504797D1 (de) 1999-02-25
DE4438760A1 (de) 1996-05-02
ATE175734T1 (de) 1999-01-15

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