EP1738013B1 - Procede de detection de charge - Google Patents

Procede de detection de charge Download PDF

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Publication number
EP1738013B1
EP1738013B1 EP05718534A EP05718534A EP1738013B1 EP 1738013 B1 EP1738013 B1 EP 1738013B1 EP 05718534 A EP05718534 A EP 05718534A EP 05718534 A EP05718534 A EP 05718534A EP 1738013 B1 EP1738013 B1 EP 1738013B1
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Prior art keywords
speed
fall
spinning
load
ramp
Prior art date
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Not-in-force
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EP05718534A
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German (de)
English (en)
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EP1738013A1 (fr
Inventor
K.; c/o Arcelik Anonim Sirketi ERENAY
A; c/o Arcelik Anonim Sirketi BAYKUT
L.; c/o Arcelik Anonim Sirketi TEZDUYAR
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Arcelik AS
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Arcelik AS
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    • 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
    • D06F2103/24—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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

  • This invention is related to a method of detecting the weight of the laundry placed into the drum in order to provide efficient performance of the washing machine.
  • the water to be taken, amount of cleaning agent and softeners, time period and cycle of the washing are determined according to the type and weight of the laundry to be washed. Also, in case the laundries are not equally distributed on the sidewall of the drum during the spinning cycle, centrifugal forces formed thereof may create detrimental vibrations and can cause moving of the machine and excessive forcing of the machine.
  • a method for determining unbalanced load in front loading machines in which the sensed values are compared to prerecorded values at high speed, which comprises, inter alia, the steps of: bringing the unbalance to a balanced state by providing the distribution of the load in the drum by rotating the drum in clockwise, counter-clockwise direction and stopping it; attaining a pre-spinning speed rate which is greater than the resonance speed rate in a short time by a high acceleration rate from a test spinning rate that is much lower than that of the resonance speed, which will cause the laundry to stick onto the inner peripheral walls of the drum, finding a firing angle value in AC motor drive systems at the pre-spinning speeds by calculating the rms voltage applied on the motor; after the pre-spinning speed, providing a fall to the test spinning speed rate by measuring the duration of the fall; measuring and calculating the value of deviation from the test speed; and calculation of the balanced loads and unbalanced loads by considering the measured and calculated data
  • load is determined based on the speed fluctuation during the washing cycle. Load is determined by the rising and falling down of the laundry in the drum.
  • load is estimated by the location and drawn voltage of the laundry placed into the drum rotating around its central axis.
  • the objective of this invention is to realize a method of detecting the load of the laundry placed into the washing machines in the most realistic way. This is achieved by the method according to independent claim 1.
  • Preferred embodiments are the subject-matter of the dependent claims.
  • Figure 1 is the schematic view of a dryer/washer.
  • Figure 2 is the flow chart of a load detection method.
  • Figure 3 is the graphical view of the change in the number of cycle in a load detection method applied before washing cycle.
  • Figure 4 is the graphical view of the change in the number of cycles in a method of detection load applied before the rinsing cycle.
  • Figure 5 is the graphical view of the change in the number of cycles in a method of detection load applied before the spinning cycle.
  • the washing machines (1) preferably front loading washing machines comprises a drum (2) into which the laundry which is called load is placed and realizes washing and spinning by rotating around an axis, an electronic control card (3), a microprocessor (5) and a data storing unit (4).
  • Data storing unit (4) may be an external unit on the control card (3) or else an internal unit in a microprocessor such as RAM, ROM or EEPROM. In the preferrred embodiment, data is saved on a ROM in the microprocessor (5).
  • Washing machines perform the washing job in various program stages (PA) as washing cycle (PY) and/or rinsing cycle (PD) and/or spinning cycle (PS).
  • PA program stages
  • PY washing cycle
  • PD rinsing cycle
  • PS spinning cycle
  • the present load detection method comprises of the following steps
  • Distribution step (200) comprises the steps of reaching a test speed (Vt) which is substantially lower than the resonance speed (Vr) that corresponds to the natural frequency of the entire washer and that harms itself at this frequency, which enables the laundry to cling on to the drum (2) due to the washing speed at a low speed and a long time interval and which results from the washers structure; and of waiting for a c ertain amount of time for the drum (2) speed within a specific time interval to settle into the constant test speed (Vt).
  • evacuation pump continuously pumps out the accumulated water.
  • the speed deviation calculation step (300) it is determined whether the absolute deviation is within the range set by the manufacturer. Thus when it is determined that the settling is provided at the test speed (Vt), speed measurement is made during "k" number of tours as set by the manufacturer in order to provide sufficient statistical data and required load distribution. Absolute deviation from the calculated speed values (V i ) from the test speed (Vt) (IV i - VtI) are calculated and added. By means of this, at the speed deviation calculation step (300), the speed deviation (Sv) formed at the test speed (Vt) is calculated according to the equation:
  • Obtained deviation value (Sv) from the test speed (Vt) is compared with the reference values obtained during design and manufacturing stages and recorded into the microprocessor (5) and unbalanced load amount in an empty drum is calculated. These values are equal to the minimum unbalanced load amount according to the other balanced load position. If this value does not permit to move to the pre-spinning step, before doing this, drum (2) is stopped and distribution step is repeated (200). If minimum unbalanced load amount obtained at the result of this process cannot be lowered to a limit preset by the manufacturer, distribution step (200) is repeated equal to the number of maximum cycle number. In case it is not succeeded, unbalanced load amount is accepted as a value specified as a result of test data and the cycle is proceeded. Thus, as there is no pre-limiting, it is moved from the speed deviation calculation step (300) to ramp step (400).
  • G ramp j t ramp t ramp end - t ramp start
  • pre-spinning speed (Vo) spinning is conducted for a specific time (t settle-pre spinning ).
  • This period (t settle-pre spinning ) is a period of time wherein settling in is guaranteed at the pre spinning speed.
  • the voltage (G pre spinning ) applied to the motor in order to ensure spinning at the pre spinning speed (Vo) are added together and the total of the pre spinning voltage (GTs) is calculated with the equation;
  • step to carry on with the rinsing stage (PD) is determined by calculating the determined load (Y) value and recorded manufacturer values and the unbalanced load (DY) value.
  • the obtained load (Y) value, the unbalanced load constants ((C1(Y)), (C2(Y)) which are recorded in the data storing unit (4) and which are determined by experimental measurements for load values (Y) calculated from experimental data and speed deviation (Sv) and unbalanced load (DY) value measured at the speed deviation calculation step (300) is calculated with the equation
  • the load (Y) quantity which is stored in the data storing unit (4) and which is found by solving the equations (equation 1 to eqution 8) with the parameters and the measurment values calculated from the results of the reference experiments carried out during design and production, the water quantity, the washing material such as detergant and softener quantity and the washing steps and the intervals to be used are selected according to the options predetermined by the manufacturer; and at the same time by comparing the experimental data defined for the spinning speeds that correspond to the obtained load (Y) quantity and the determined unbalanced load (DY) values, the spining profiles which comprise parameters such as the speed and the duration to be applied in the rinsing and the spinning stages are determined and applied.
  • the load detection method in a washer (1) which has a resonance frequency around 200 revolution/minute the test speed (Vt) used is 100 revolution/minute and the pre spinning speed (Vo) is 400 revolution/ minute.
  • the load detection method by properly determining the loads at the beginning of the washing process, appropriate washing algorithms can be applied by comsuming low energy and by using the required amount of washing material and water quantity. Consequently, it is possible to produce low volume washing machines that have high load capacities.
  • the unbalanced load values (DY) which are calculated from the load (Y) values, problems resulting from spinning such as opening of the drum, breaking of the bearings, wearinng out of the damper and the burden of service is decreased and at the same time it is possible for the user to use the washer/ dryer by using minimum detergant, softener quantities and minimum time and minimum energy.

Landscapes

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

Claims (6)

  1. Une méthode de détection de charge, qui est utilisée dans une laveuse (1) comprenant une carte électronique de commande (3) et une unité de stockage des données (4), et qui est appliquée avant n'importe quelle étape de programme (PA) qui sont l'étape de lavage (PY), l'étape de rinçage (PD) ou l'étape d'essorage (PS) afin de détecter le poids du linge placé dans le tambour, et qui comprend les étapes de
    - une étape de distribution (200) à une vitesse (Vy) prédéfinie par le fabricant au cours de laquelle le déséquilibre que la distribution du linge dans la machine à laver cause est diminué ou éliminé ;
    - une étape de mesure d'écart de vitesse (300) où la première mesure est réalisée à une vitesse de test (Vt) prédéfinie par le fabricant, où des écarts de valeur absolus entre les valeurs de vitesse mesurées (Vi) et la vitesse de test (Vt) sont calculés (I Vi- Vt I) et ajoutés, qui donne l'écart de vitesse Sv à une vitesse de test (Vt), tout en décidant s'il convient de procéder à l'étape suivante ou de répéter l'étape de distribution (200) selon les valeurs obtenues dans les comparaisons ;
    - Une étape d'augmentation (400) où une vitesse de pré-essorage (Vo) plus élevée que la vitesse de test (Vt) par une accélération momentanée est atteint, où la période d'augmentation (tramp) entre la période de la vitesse de test (Vt) à la vitesse de pré-essorage (Vo) et des valeurs totales de tension d'augmentation du moteur GTr calculées aux intervalles de temps prédéfinies par le fabricant sont enregistrées;
    - une étape de pré-essorage (500) où, après avoir passé quelque temps à la vitesse de pré-essorage atteinte (Vo), les valeurs totales de tension de moteur de pré-essorage GTs au pré-essorage telles que calculées à des intervalles de temps prédéfinis à la vitesse de pré-essorage sont enregistrées, et
    - une étape de baisse (600) où l'intervalle de baisse (tdecent) requis pour passer de la vitesse de pré-essorage (Vo) à une vitesse de transition de baisse (Vg) qui est inférieure à la vitesse de pré-essorage (Vo) et supérieure à la vitesse de test (Vt) est enregistrée et en utilisant la période de sortie d'augmentation tramp, la période de baisse tfall, les valeurs totales de tension de moteur de pré-essorage GTs et les valeurs totales de tension d'augmentation du moteur GTr et les constantes de charge prédéterminées K1, K2, K3, K4, K11, K12, K13, K14, K21, K22 et les constantes de charge déséquilibré C1(Y), C2 (Y), pour les valeurs de charge possibles (Y) prédéterminées en calculant à partir des données expérimentales et qui sont enregistrées dans l'unité de stockage des données (4),
    la valeur temporaire de change d'augmentation Yr est obtenue en utilisant les valeurs obtenues à l'étape d'augmentation (400) avec l'équation : Yr = K ⁢ 1 + K ⁢ 2 * Sv + K ⁢ 3 * t ramp + K ⁢ 4 * GTr
    Figure imgb0018
    la valeur temporaire de change de baisse Yf est obtenue en utilisant les valeurs obtenues a l'étape de baisse (600) avec l'équation : Yf = K ⁢ 11 + K ⁢ 12 * Sv + K ⁢ 13 * t fall + K ⁢ 14 * GTs
    Figure imgb0019
    la valeur de charge corrigé Y est obtenue en utilisant la valeur temporaire de charge d'augmentation Yr et la valeur temporaire de charge de baisse Yf avec l' équation : Y = K ⁢ 21 * Yr + K ⁢ 22 * Yf
    Figure imgb0020
    et la valeur de charge déséquilibré DY est obtenue par le charge corrigé obtenu Y et la façon de démarrer et de poursuivre les étapes du programme (PA) est déterminé selon les valeurs de charge déséquilibré (DY).
  2. Une méthode de détection de charge selon la Revendication 1, comprenant l'étape de baisse (600) où sa valeur de charge déséquilibré (DY) est calculée avec l'équation : DY = C ⁢ 1 Y + C ⁢ 2 Y * Sv
    Figure imgb0021
  3. Une méthode de détection de charge selon la Revendication 1 ou 2, comprenant une étape de baisse (600) où la baisse libre est assurée par la vitesse de pré-essorage (Vo) jusqu'à ce que le tambour s'arrête après l'étape de lavage (PY).
  4. Une méthode de détection de charge selon l'une quelconque des revendications précédentes, comprenant une étape de baisse (600) où une baisse libre est activée à partir de la vitesse de pré-essorage (Vo) à la vitesse de test (Vt) avant l'étape de rinçage (PD).
  5. Une méthode de détection de charge selon l'une quelconque des revendications précédentes, comprenant une étape de baisse (600) où une baisse libre est activée à partir de la vitesse de pré-essorage (Vo) à la vitesse de test (Vt) avant l'étape d'essorage (PS).
  6. Une méthode de fonctionner une laveuse (1) selon une méthode de détection de charge selon l'une quelconque des revendications précédentes.
EP05718534A 2004-03-01 2005-03-01 Procede de detection de charge Not-in-force EP1738013B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400381 2004-03-01
PCT/IB2005/050751 WO2005085511A1 (fr) 2004-03-01 2005-03-01 Procede de detection de charge

Publications (2)

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EP1738013A1 EP1738013A1 (fr) 2007-01-03
EP1738013B1 true EP1738013B1 (fr) 2012-01-11

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AT (1) ATE541076T1 (fr)
TR (1) TR200604628T1 (fr)
WO (1) WO2005085511A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053002A2 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Lave-linge/sèche-linge
KR101211590B1 (ko) * 2008-10-29 2012-12-12 주식회사 대우일렉트로닉스 액체세제 공급장치를 가지는 세탁기의 제어방법
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
US20120005840A1 (en) * 2010-07-06 2012-01-12 Jang Hoyong Washing machine and method for controlling the same
KR20130025265A (ko) * 2011-09-01 2013-03-11 삼성전자주식회사 세탁기 및 그 제어방법
US20130160221A1 (en) * 2011-12-22 2013-06-27 Whirlpool Corporation Method for maximizing drum rotational speed by continuously monitoring inertia during extraction
KR102577545B1 (ko) 2016-09-27 2023-09-11 엘지전자 주식회사 세탁기 및 그 제어방법
KR102520506B1 (ko) 2016-09-29 2023-04-10 엘지전자 주식회사 세탁기 및 그 제어방법
KR102517609B1 (ko) 2016-09-29 2023-04-03 엘지전자 주식회사 세탁기 및 그 제어방법
KR102527576B1 (ko) * 2016-10-07 2023-04-28 엘지전자 주식회사 세탁기 및 그 제어방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1256270B (it) * 1991-10-11 1995-11-29 Zanussi Elettrodomestici Procedimento di misurazione del peso della biancheria per macchina lavatrice di biancheria.
DE4431846C2 (de) * 1994-09-07 2001-02-15 Diehl Ako Stiftung Gmbh & Co Verfahren zum beladungsabhängigen Steuern und/oder Regeln einer Waschmaschine oder eines Wäschetrockners
IT1267587B1 (it) * 1994-09-28 1997-02-07 Zanussi Elettrodomestici Lavabiancheria perfezionata con determinazione automatica del peso
DE19857903A1 (de) * 1997-12-16 1999-06-17 Miele & Cie Verfahren zur Ermittlung der Wäschemenge in der Trommel einer Waschmaschine oder eines Trockners
AU2002360235A1 (en) * 2001-11-30 2003-06-10 Arcelik A.S. Method for determining unbalanced load
KR100504486B1 (ko) * 2002-12-10 2005-08-03 엘지전자 주식회사 드럼세탁기의 포량 감지방법

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EP1738013A1 (fr) 2007-01-03
WO2005085511A1 (fr) 2005-09-15
TR200604628T1 (tr) 2007-01-22
ATE541076T1 (de) 2012-01-15

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