EP2094893B1 - Lave-linge/sèche-linge - Google Patents

Lave-linge/sèche-linge Download PDF

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Publication number
EP2094893B1
EP2094893B1 EP07822068A EP07822068A EP2094893B1 EP 2094893 B1 EP2094893 B1 EP 2094893B1 EP 07822068 A EP07822068 A EP 07822068A EP 07822068 A EP07822068 A EP 07822068A EP 2094893 B1 EP2094893 B1 EP 2094893B1
Authority
EP
European Patent Office
Prior art keywords
drum
control unit
natural frequency
values
load
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
EP07822068A
Other languages
German (de)
English (en)
Other versions
EP2094893A2 (fr
Inventor
M. Omer Akbas
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2094893A2 publication Critical patent/EP2094893A2/fr
Application granted granted Critical
Publication of EP2094893B1 publication Critical patent/EP2094893B1/fr
Not-in-force 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
    • 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
    • D06F2103/24—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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

Definitions

  • the present invention relates to a washer/dryer wherein the amount of laundry contained therein is detected.
  • the amount of the laundry (the load) emplaced in the drum by the user is the amount of the laundry (the load) emplaced in the drum by the user. If this load is known, then the amount of water and detergent to be used and the washing duration can be determined. Respectively the washing machine can be operated with the minimum amount of energy, water and detergent as possible.
  • various sensors are used for measuring the load embraced in the drum by the user.
  • an electrically insulated surface functioning as a capacitor between the drum and the body, is utilized as a load sensor.
  • the load is detected by looking at the speed profiles obtained during washing.
  • the amount of load is determined by rising and falling of the laundry while the drum rotates.
  • EP 0709512 A1 concerns a washing machine and a process for using the washing machine.
  • the washing machine comprises a rotating drum for the washing, a motor for driving the drum, and a device for the display of a rotation speed signal.
  • the loading stage is determined by an evaluator circuit in accordance with the vibration behaviour of the speed signal during the reversing cycle in a first program cycle.
  • An object of the present invention is to provide a method of controlling a washer/dryer wherein the amount of load in the drum is determined easily.
  • the object of the present invention is achieved by the method for controlling a washer/dryer according to claim 1.
  • the object of the present invention is also achieved by the methods for controlling a washer/dryer according to the dependent claims.
  • the drum is accelerated up to a speed that is greater than the angular speed corresponding to the estimated value of natural frequency.
  • the angular speed of the system corresponding to the natural frequency present in the load is measured by using the measurements received from the speed sensor utilized in measuring the motor speed. This value is compared with the natural frequency values for known loads measured and previously recorded in the control unit by the producer. As a result, the load amount corresponding to the said natural frequency is determined as the weight of the load contained in the drum.
  • the angular speed value corresponding to the natural frequency is detected by determining the angular speed wherein the difference between the minimum and maximum angular speed values is greatest that is realized during a full revolution with the data received from the speed sensor.
  • the greatest angular speed value to which drum should be accelerated for determining the load is decided by the producer as a result of a study made while the machine is empty.
  • the natural frequency value is greatest while laundry is not loaded in the machine. For this reason the angular speed value corresponding to the natural frequency determined by tests done while the machine is empty can be used together with a safety margin as the highest speed value to which the drum has to accelerate.
  • the load determining process is made while dry before receiving water.
  • the dry weight of the laundry can be determined more precisely.
  • a certain amount of water is received into the tub in order to prevent fraying of the laundry as a result of rotating at high speed.
  • This amount is preferably less than the water amount required for washing, just sufficient for reducing the friction between the drum and the clothes.
  • subtracting the weight of water received into the tub will be adequate.
  • the producer records the same values in the control unit of all the washer/dryers produced of a certain type.
  • the producer does not have to apply tests to every washer/dryer separately.
  • the natural frequency value reduction corresponding to a certain load value increase has been ascertained to be approximately the sane for the same type of machines.
  • the reduction quantity according to the natural frequency of the empty machine corresponding to the angular speed is the same.
  • the producer tests each washer/dryer separately and the machine specific values are recorded in the control unit of each washer/dryer. Consequently, the amount of laundry the user places in the drum can be measured more precisely taking into account the differences relating to production. The producer can measure these values during the speed tests currently applied to the machines.
  • Figure 1 - is the schematic view of a washer/dryer.
  • Figure 2 - is the graph of the angular speed - drum angle of a washer/dryer.
  • the washer/dryer (1) can be a washing machine used in cleaning laundry by washing with water, a dryer used for drying wet laundry or a washer-dryer that can perform both washing and drying.
  • the washer/dryer (1) functions according to a program.
  • the washer/diyer (1) basically comprises
  • the washer/dryer (1) is basically formed of two main groups.
  • the first is the tub group including the motor (5), transmission components such as the belt-pulley, the drum (4), the tub (3) and balance weights (not shown in the figures).
  • the second is the body group including the door, detergent dispenser, control panel, feet and the body (2).
  • the tub group and the body group are dynamically connected to each other by means of springs, dry friction shock absorbers and a viscoelastic bellows.
  • the producer places a known load (Li) into the drum (4) each time for determining the natural frequency (Wni) value generated under that load during the production of the washer/dryer (1).
  • the results are recorded in the control unit (6) as a table or as a function.
  • the drum (4) is accelerated in dry conditions before receiving water into the tub (3).
  • the amount of load (L) placed in the drum (4) can be directly calculated.
  • the drum (4) is accelerated while the laundry is wet after a certain amount of water is received into the tub (3).
  • the amount of water received into the tub (3) is preferably less than the amount required for the main washing.
  • the water amount is sufficient for reducing the friction between the laundry and the drum (4).
  • subtracting the weight of the water will suffice while calculating the amount of the laundry load (L).
  • the maximum value (Wm) to which the drum (4) will be accelerated is a constant value preset by the producer, in another embodiment, it is a value determined dynamically by the control unit (6).
  • the producer determines the highest speed value that the drum (4) should accelerate by adding a certain safety margin to the natural frequency that is assessed while the machine is empty.
  • the control unit (6) that records the natural frequency values realized in various operations determines a maximum angular speed corresponding to these. The control unit (6) in this way prevents the drum (4) from accelerating to very high speeds by determining a value according to the routines of the user.
  • the senor (7) is a tachogenerator having a revolution that can detect the variations in the angular speed (W) during a full revolution (2p) of the drum (4).
  • the sensor (7) can either be a tachogenerator included in the motor (5) or a specific tachogenerator for measuring the angular speed of the drum (4).
  • This tachogenerator can be a multi-pole, optical or magnetic tachogenerator. It is preferable that the tachogenerator has approximately 30-60 poles for effectively monitoring the speed changes during one full revolution.
  • the producer records the same values (Wi-Li) in the control unit (6), regarding the fact that the dynamic properties of washer/dryers (1) belonging to a certain series are similar hence possess proximate natural frequency values. Consequently, the producer does not have to apply tests to each washer/dryer (1) separately.
  • the producer records to the control unit (6) the load difference (DLi) and the corresponding angular speed difference (DWi) values wherein the natural frequency is observed.
  • the load difference (DLi) and the corresponding angular speed difference (DWi) values wherein the natural frequency is observed.
  • the angular speed value (Wn_e) corresponding to the natural frequency detected while the machine is empty should also be recorded in the control unit (6).
  • the producer records in the control unit (6) the values (Wi-Li) exclusive to the machine obtained from the test results by testing each washer/dryer (1) separately. Consequently, the amount of laundry (L) placed in the drum (4) by the user can be determined more precisely by tasking into account the differences of each machine and the variations due to the production.
  • the laundry load can be determined by using the data of the available speed sensors (7), without a dedicated sensor designed exclusively for this process. Consequently, contribution is provided for decreasing the costs.

Landscapes

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

Claims (9)

  1. Méthode de contrôle d'une machine à laver/sécher (1) utilisée dans le nettoyage du linge par lavage ou pour le séchage, comprenant
    un corps (2), une cuve (3) disposée dans le corps (2), un tambour (4) qui tourne dans la cuve (3) et où le linge (L) est placée,
    un moteur (5) fournissant l'entraînement nécessaire pour faire tourner le tambour (4),
    un capteur de vitesse (7) qui mesure la vitesse angulaire du tambour (4) et/ou du moteur (5), et une unité de contrôle (6),
    caractérisée en ce que
    les valeurs de fréquences naturelles (Wni, i=1, ..., k) correspondant à une série de montants de charge connue (Li, i=1, ..., K) sont enregistrées dans l'unité de contrôle (6) par le producteur,
    l'unité de contrôle (6) accélère le moteur (5) à une plus grande révolution que les valeurs probables de fréquence naturelle après que l'utilisateur charge le linge (L) dans le tambour (4),
    l'unité de contrôle (6) trouve simultanément la valeur de vitesse angulaire correspondant à la fréquence naturelle (Wn) en utilisant les valeurs de la vitesse momentané angulaire (Wj) mesurées par le capteur de vitesse (7), et
    l'unité de contrôle (6) compare cette valeur avec les valeurs (Li-Wni; i=1, ..., k) préenregistrées par le producteur pour déterminer le montant de la charge (L).
  2. Méthode de contrôle selon la Revendication 1,
    caractérisée par
    une unité de contrôle (6) qui effectue le processus de déterminer le montant de la charge avant que l'eau est reçue dans la cuve (3).
  3. Méthode de contrôle selon la Revendication 1,
    caractérisée par
    une unité de contrôle (6) qui effectue le processus de déterminer le montant de la charge après que une certaine quantité d'eau est reçue dans la cuve (3).
  4. Méthode de contrôle selon l'une quelconque des revendications de 1 à 3,
    caractérisée par
    une unité de contrôle (6) qui calcule la différence (DWj=Wmaxj-Wminj) entre les valeurs minimales (Wminj) et maximales (Wmaxj) de la vitesse momentanée angulaire (W) lors de chaque tour complet (2p) tandis que le tambour (4) est accéléré de zéro jusqu'à une certaine vitesse, et
    donc qui détermine que la vitesse angulaire (Wj) correspondant à la fréquence naturelle (Wn) pour ladite charge (L) est égale à la vitesse angulaire (j) à laquelle la plus grande de ces différences (Dwmax) correspond.
  5. Méthode de contrôle selon l'une quelconque des revendications de 1 a 4,
    caractérisée par
    une unité de contrôle (6) où la valeur maximale (Wm) à laquelle le tambour (4) est accélérée est prédéterminée et enregistrée par le producteur.
  6. Méthode de contrôle selon la Revendication 5,
    où la valeur maximale (Wm) à laquelle le tambour (4) est accélérée est déterminée par le producteur en ajoutant une certaine marge de sécurité à la fréquence naturelle détectée alors que le tambour (4) est vide.
  7. Méthode de contrôle selon l'une quelconque des revendications de 1 a 6,
    caractérisée par
    une unité de contrôle (6) qui détermine dynamiquement la valeur maximale (Wm) à laquelle le tambour (4) est accélérée en surveillant les valeurs de la fréquence naturelle produites dans des opérations diverses.
  8. Méthode de contrôle selon l'une quelconque des revendications de 1 a 3,
    caractérisée par
    une unité de contrôle (6) où les mêmes valeurs sont enregistrées dans tous ceux qui appartiennent à une certaine série.
  9. Méthode de contrôle selon la Revendication 8,
    caractérisée par
    une unité de contrôle (6) où les valeurs de la différence de la charge (DLi) de la valeur de la vitesse angulaire (Wn_e) correspondant à la fréquence naturelle détectée et les valeurs de la différence de la vitesse angulaire (DWi) correspondantes où la fréquence naturelle observée sont enregistrées alors que la machine est vide ;
    qui détermine la valeur de la vitesse angulaire (Wn_f) correspondant à la fréquence naturelle en accélérant le tambour (4) après que l'utilisateur charge le linge, et
    détermine la charge (L) en comparant la différence (DW=Wn_e-Wn_f) entre les deux valeurs de la vitesse angulaire correspondant aux fréquences naturelles détectées alors que le tambour (4) est vide et chargée avec les valeurs enregistrées (DLi-DWi).
EP07822068A 2006-10-31 2007-10-31 Lave-linge/sèche-linge Not-in-force EP2094893B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200606046 2006-10-31
PCT/EP2007/061717 WO2008053002A2 (fr) 2006-10-31 2007-10-31 Lave-linge/sèche-linge

Publications (2)

Publication Number Publication Date
EP2094893A2 EP2094893A2 (fr) 2009-09-02
EP2094893B1 true EP2094893B1 (fr) 2011-09-14

Family

ID=39166351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07822068A Not-in-force EP2094893B1 (fr) 2006-10-31 2007-10-31 Lave-linge/sèche-linge

Country Status (3)

Country Link
EP (1) EP2094893B1 (fr)
AT (1) ATE524593T1 (fr)
WO (1) WO2008053002A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9551103B2 (en) 2013-08-13 2017-01-24 Whirlpool Corporation Method to detect the type of a load in a laundry treating appliance
US9624615B2 (en) 2013-03-15 2017-04-18 Whirlpool Corporation Methods and compositions for treating laundry items

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8166590B2 (en) 2009-04-16 2012-05-01 Whirlpool Corporation Method and apparatus for determining laundry load size
US8631527B2 (en) 2009-08-10 2014-01-21 Whirlpool Corporation Laundry treating appliance with tumble pattern control
US8381569B2 (en) * 2009-11-17 2013-02-26 Whirlpool Corporation Method and apparatus for determining load amount in a laundry treating appliance
US9428854B2 (en) * 2010-07-30 2016-08-30 Haier Us Appliance Solutions, Inc. Method and apparatus for balancing an unbalanced load in a washing machine
KR20130025265A (ko) * 2011-09-01 2013-03-11 삼성전자주식회사 세탁기 및 그 제어방법
US9702074B2 (en) 2013-03-15 2017-07-11 Whirlpool Corporation Methods and compositions for treating laundry items
KR20150054128A (ko) * 2013-11-11 2015-05-20 동부대우전자 주식회사 세탁기의 세탁제어 장치 및 방법
CN106592155A (zh) * 2016-10-31 2017-04-26 无锡小天鹅股份有限公司 洗衣机及其模糊称重的校正方法和校正装置

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Publication number Priority date Publication date Assignee Title
IT1267587B1 (it) * 1994-09-28 1997-02-07 Zanussi Elettrodomestici Lavabiancheria perfezionata con determinazione automatica del peso
DE4438760A1 (de) * 1994-10-29 1996-05-02 Miele & Cie Verfahren zur Ermittlung einer von der Wäscheart und der Wäschemenge abhängigen Beladungsstufe
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
ES2203002T3 (es) * 1999-12-28 2004-04-01 Whirlpool Corporation Metodo para determinar la carga total y la carga desequilibrada en un tambor de secadora de una lavadora.
ATE541076T1 (de) * 2004-03-01 2012-01-15 Arcelik As Verfahren zur bestimmung der ladung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9624615B2 (en) 2013-03-15 2017-04-18 Whirlpool Corporation Methods and compositions for treating laundry items
US9631310B2 (en) 2013-03-15 2017-04-25 Whirlpool Corporation Methods and compositions for treating laundry items
US9644301B2 (en) 2013-03-15 2017-05-09 Whirlpool Corporation Methods and compositions for treating laundry items
US9689101B2 (en) 2013-03-15 2017-06-27 Whirlpool Corporation Methods and compositions for treating laundry items
US9758914B2 (en) 2013-03-15 2017-09-12 Whirlpool Corporation Methods and compositions for treating laundry items
US10011935B2 (en) 2013-03-15 2018-07-03 Whirlpool Corporation Methods and compositions for treating laundry items
US10017893B2 (en) 2013-03-15 2018-07-10 Whirlpool Corporation Methods and compositions for treating laundry items
US10072373B2 (en) 2013-03-15 2018-09-11 Whirlpool Corporation Methods and compositions for treating laundry items
US10266981B2 (en) 2013-03-15 2019-04-23 Whirlpool Corporation Methods and compositions for treating laundry items
US9551103B2 (en) 2013-08-13 2017-01-24 Whirlpool Corporation Method to detect the type of a load in a laundry treating appliance

Also Published As

Publication number Publication date
WO2008053002A3 (fr) 2008-06-26
WO2008053002A2 (fr) 2008-05-08
ATE524593T1 (de) 2011-09-15
EP2094893A2 (fr) 2009-09-02

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