EP2432926B1 - Machine à laver dont le tambour équilibre la charge - Google Patents

Machine à laver dont le tambour équilibre la charge Download PDF

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Publication number
EP2432926B1
EP2432926B1 EP10718608A EP10718608A EP2432926B1 EP 2432926 B1 EP2432926 B1 EP 2432926B1 EP 10718608 A EP10718608 A EP 10718608A EP 10718608 A EP10718608 A EP 10718608A EP 2432926 B1 EP2432926 B1 EP 2432926B1
Authority
EP
European Patent Office
Prior art keywords
drum
washing machine
compartments
wall
electrorheological fluid
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
EP10718608A
Other languages
German (de)
English (en)
Other versions
EP2432926A1 (fr
Inventor
Kenan Atac
Yilmaz Dogan
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
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP2432926A1 publication Critical patent/EP2432926A1/fr
Application granted granted Critical
Publication of EP2432926B1 publication Critical patent/EP2432926B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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 
    • D06F33/48—Preventing or reducing imbalance or noise
    • 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
    • D06F34/16—Imbalance

Definitions

  • the present invention relates to a washing machine wherein the unbalanced load inside the drum is balanced by performing dynamic balancing.
  • the laundry to be washed is placed into a drum that rotates around a horizontal axis.
  • the laundry is cleaned with water and detergent by rotating the drum at different speeds. While the drum is being rotated, the laundry is not distributed homogeneously inside the drum, causing an uneven distribution of the laundry by piling up in some areas. Particularly in the spinning step wherein the drum is rotated at very high speeds, the unbalanced loads cause centrifugal forces to occur and as a result of this, cause vibration and noise.
  • viscous liquids are used as the balancing liquid, and spherical or cylindrical elements such as balancing balls that move around the drum by the effect of the centrifugal force are placed in the viscous liquids in order to improve the balancing process.
  • the said dynamic balancing systems occupy much space inside the washing machine body and due to the big masses of the used balancing materials, these materials themselves create an additional imbalance and the increase of noise cannot be prevented.
  • plural water-holding chambers are located wherein water is added for balancing and which are arranged on the drum rear wall and around the drum rotation axis.
  • Document DE 10034630 A1 discloses a laundry drying machine comprising the features of the preamble of claim 1.
  • the aim of the present invention is the realization of a washing machine having a balancing unit that performs precise balancing process and occupies less space.
  • the washing machine of the present invention comprises a drum wherein the laundry is placed and which rotates around a horizontal axis, and hollow annular balancing units, which are fixed at the front and back of the drum, and the inner volume of which is divided into compartments and wherein the compartments extend in the radial direction side by side as segments and into these compartments electrorheological fluid is placed as the balancing fluid.
  • the electrorheological fluid placed in the compartments is solidified when electric field is applied thereon, and is liquefied when the electric field is removed.
  • the electrorheological fluid placed in the balancing unit performs the balancing process by being activated, that is, by its viscosity being increased and reduced in the compartments that need balancing.
  • the washing machine furthermore, comprises an unbalanced load sensor that detects the unbalanced load occurring during the rotation of the drum, and a control card that provides an electric current to be applied to the compartment or compartments wherein the balancing process will be performed, or the applied electric field to be removed, according to the unbalanced load data received from the sensor.
  • the balancing unit Around the rotational axis of the drum, the balancing unit has a circular inner wall that surrounds the inner side of the drum, a circular outer wall that surrounds the outer side thereof, and compartment walls that form the compartments by extending in the radial direction between the inner wall and the outer wall.
  • control card In the washing machine, in the situation that no unbalanced load is detected by the sensor, the control card provides the electrorheological fluid to be solidified around the inner wall of the compartment by applying electric field to all of the compartments in the balancing unit.
  • the control card In the washing machine, in the situation that an unbalanced load is detected by the sensor, the control card removes the electric field it applies to the compartment or compartments, which will perform the function of balancing the detected unbalanced load, according to the unbalanced load data received from the sensor and thus, the electrorheological fluid that is kept in the solid state around the inner wall is liquefied and moves to the outer wall by the effect of the centrifugal force.
  • the control card again applies electric field to the electrorheological fluid that reaches the outer wall and solidifies it, and provides the electrorheological fluid to form a counterweight there.
  • the washing machine furthermore, has ring - shaped conductive commutators which provide an electric field to be applied to the electrorheological fluid and to be removed therefrom, and which are peripherally insulated and mounted onto the drum shaft, rotate with the drum shaft, and provide the electric current that will be applied to the electrorheological fluid to be transmitted to the compartments by means of cables; brushes which provide the electric current generated in a power source to be transmitted to the commutators and electrodes which are located inside the compartments and transmit the electric current received from the commutators to the electrorheological fluid in the compartments.
  • nano - electrorheological fluid to which nano - particle is added that provides it to reach a solidity close to solid materials when electric field is applied, is used in the balancing unit.
  • the balancing unit occupies a very small space by means of the electrorheological fluid placed therein, and a more effective and precise balancing in comparison to the balancing mechanisms with big masses is performed.
  • Figure 1 - is the schematic view of a washing machine.
  • Figure 2 - is the schematic view of a drum, at the front and back of which balancing units are mounted.
  • Figure 3 - is the schematic view of a balancing unit in the passive position.
  • Figure 4 - is the schematic view of a balancing unit in the active position.
  • Figure 5 - is the schematic view of the brushes, commutators and electrodes that transmit electric current to a balancing unit through the drum shaft.
  • the washing machine (1) comprises a body, a drum (2) wherein the laundry is placed and which rotates around a horizontal axis, a motor which moves the drum (2), a tub wherein the drum (2) moves, and a shaft (3) which transmits the movement received from the motor to the drum (2) and determines the rotational axis (E) of the drum (2).
  • the washing machine (1) of the present invention comprises one or more balancing units (5)
  • balancing units (5) are mounted to the drum (2) as one to the front side wherein the laundry loading port is situated and one to the rear side wherein the actuating elements are situated.
  • electrorheological fluid is used for fluids which become gel-like or solidified from the liquid state in a very short time, for example in a couple of milliseconds by their viscosity being increased according to the magnitude of the electric field when an electric field is applied, and which return to the liquid state when the applied electric field is removed.
  • the electrorheological fluid (ER) is sometimes called the electroviscous fluid, too. Alteration of the viscosity by the effect of the electric field, and accordingly of the mechanical features such as the yield stress of the electrorheological fluid (ER) is known as the Winslow effect.
  • electrorheological fluids (ER) are used in brake mechanisms, hydraulic valves, clutches and shock absorbers.
  • the electrorheological fluid (ER) is filled into the balancing units (5), which rotate together with the drum (2), as the balancing fluid.
  • the electrorheological fluid (ER) provides the balancing process to be performed by being activated, that is, by its viscosity being increased and reduced in the compartment (4) or compartments (4) that need balancing.
  • the washing machine (1) furthermore, comprises a sensor (6) that detects the unbalanced load occurring during the rotation of the drum (2), and a control card (7) that provides an electric field to be applied to the electrorheological fluid (ER) in the compartments (4) and that provides an electric current to be applied to the compartment (4) or compartments (4) wherein the balancing process will be performed, or the applied electric field to be removed, according to the unbalanced load data received from the sensor (6).
  • ER electrorheological fluid
  • the balancing unit (5) comprises a circular inner wall (8) that surrounds the inner side of the drum (2), a circular outer wall (9) that surrounds the outer side thereof, and more than one compartment wall (10) that extend in the radial direction between the inner wall (8) and the outer wall (9) and thus, form the compartments (4).
  • the electrorheological fluid (ER) in the compartments (4) inside the balancing unit (5) is collected around the inner wall (8) and the electrorheological fluid (ER) is provided to be solidified by applying electric field to all of the compartments (4) by the control card (7).
  • the electrorheological fluid (ER) takes a proper annular shape around the inner wall (8) that is close to the center of the balancing unit (5), and does not create an additional imbalance.
  • the control card (7) removes the electric field it applies to the compartment (4) or compartments (4), which will perform the function of balancing the detected unbalanced load, according to the unbalanced load data received from the sensor (6) and thus, liquefies the electrorheological fluid (ER) which is initially kept in the solid state around the inner wall (8), that is, releases it.
  • the electrorheological fluid (ER) liquefied in the compartment (4) moves towards the outer wall (9) by the effect of the centrifugal force, and is solidified by the control card (7) applying an electric field again at the moment it reaches the outer wall (9).
  • the electrorheological fluid (ER) that is solidified by adhering to the inner surface of the outer wall (9) in the compartment (4) performs the function of balancing by forming a counterweight for the unbalanced load.
  • the washing machine (1) of the present invention furthermore, comprises more than one ring - shaped conductive commutator (11) which provide an electric field to be applied to the electrorheological fluid (ER) and to be removed therefrom, and which are peripherally insulated and mounted onto the shaft (3), rotate with the shaft (3) and provide the electric current applied to the electrorheological fluid (ER) to be transmitted to the compartments (4) by means of cables; more than one brush (12) which provide the electric current generated in a power source to be transmitted to the commutator (11) and which are fixed to the body of the drum or of the washing machine (1) and produced from thin copper or steel wire; and more than one electrode (13) which are located inside the compartments (4) in the balancing unit (5) and transmit the electric current received from the commutators (11) to the electrorheological fluid (ER) in the compartments (4).
  • the control card (7) detects in which compartment (4) or compartments (4) the balancing process will be performed according to the unbalanced load data received from the sensor (6), and the current generated in the power source is transmitted to the commutators (11), which rotate on the shaft (3), by means of the brushes (12), and from the commutators (11) to the electrodes (13) by means of the cables passing through the drum (2) or shaft (3), and from the electrodes (13) to the electrorheological fluid (ER) in the related compartment (4) or compartments (4).
  • the electrodes (13) are disposed between the compartment walls (10) and on the inner wall (8), and extend in the radial direction from the inner wall (8) towards the outer wall (9) ( Figures 3, 4 ).
  • the electrodes (13) provide the electrorheological fluid (ER), which is liquefied around the inner wall (8) when the electric field is removed and which is under the influence of the centrifugal force, to be directed towards the outer wall (9) in a proper manner.
  • the washing machine (1) has a balancing unit (5) wherein nano - electrorheological fluid (NER), to which nano - particles are added that provides it to reach a solidity close to solid materials such as plastic materials when electric field is applied, is used.
  • NER nano - electrorheological fluid
  • silicone oil is used as the electrorheological fluid and Barium Titanyl Oxalate (BaTiO(C204)2) nano-particles having a size of approximately 50 - 70 nm are added to the electrorheological fluid (ER).
  • the provided nano - electrorheological fluid is solidified from the liquid state in 1/100 of a second by the applied electric field of 1 - 2 kV/mm, and is liquefied from the solid state in the same period of time when the electric field is removed.
  • the balancing unit (5) occupies a very small space by means of the electrorheological fluid (ER) placed therein, and provides a more effective and precise balancing in comparison to the balancing mechanisms with big masses to be performed.
  • the balancing unit (5) furthermore, does not form a source of imbalance itself.
  • the compartments (4) forming the balancing unit (5) are shaped as a closed box each, and once the electrorheological fluid (ER) is filled into the compartments (4), the compartments (4) are completely closed and the electrorheological fluid (ER) remains in the compartment (4) permanently.
  • processes such as filling fluid from the outside or discharging fluid to the outside like for example in the mechanisms wherein water is used as the balancing fluid are not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (9)

  1. Une machine à laver (1) comprenant un tambour (2) où le linge est placé et qui tourne autour d'un axe horizontal, un arbre (3) qui transmet le mouvement reçu du moteur au tambour (2) et qui détermine l'axe de rotation (E) du tambour (2), et une ou plusieurs unités d'équilibrage (5) comprenant plus d'un compartiment (4) disposé tout autour de l'axe de rotation (E) du tambour (2), caractérisée en ce que un fluide électrorhéologique (ER) est placé dans les compartiments (4), qui devient comme un gel ou est solidifié de l'état liquide par l'augmentation de sa viscosité lorsqu'un champ électrique est appliqué et qui retourne à l'état liquide lorsque le champ électrique est supprimé.
  2. Une machine à laver (1) selon la Revendication 1, caractérisée par un capteur (6) qui détecte la charge déséquilibrée se produisant pendant la rotation du tambour (2), et une carte de commande (7) qui permet l'application d'un champ électrique au fluide électrorhéologique (ER) dans les compartiments (4) et qui permet l'application d'un courant électrique au compartiment (4) ou aux compartiments (4) où le processus d'équilibrage sera effectué, ou la suppression du champ électrique appliqué, selon les données de la charge déséquilibrée reçues du capteur (6).
  3. Une machine à laver (1) selon la Revendication 1 ou 2, caractérisée par l'unité d'équilibrage (5) qui est fixée à l'avant et/ou à l'arrière du tambour (2) de façon concentrique avec le tambour (2) et qui présente une forme annulaire creuse, et où des compartiments (4) sont formés en divisant son volume intérieur en parts et où ces compartiments (4) sont arrangés tout autour de l'axe de rotation (E) du tambour (2), et qui, autour de l'axe de rotation du tambour (2), présente une paroi intérieure circulaire (8) qui entoure la face intérieure du tambour (2), une paroi extérieure circulaire (9) qui entoure la face extérieure de celle-ci, et plus d'une paroi de compartiment (10) qui s'étend dans la direction radiale entre la paroi intérieure (8) et la paroi extérieure (9) et qui forme les compartiments (4).
  4. Une machine à laver (1) selon les Revendication 3, caractérisée par la carte de commande (7) qui permet la solidification du fluide électrorhéologique (ER) rassemblé autour de la paroi intérieure (8) en l'appliquant le champ électrique dans tous les compartiments (4) dans l'unité d'équilibrage (5) au cas où aucune charge déséquilibrée ne serait détectée par le capteur (6).
  5. Une machine à laver (1) selon les Revendications 3 et 2 ou selon la Revendication 4, caractérisée par la carte de commande (7) qui, au cas où une charge déséquilibrée serait détectée par le capteur (6), supprime le champ électrique qu'elle applique au compartiment (4) ou aux compartiments (4), qui effectue la fonction d'équilibrage de la charge déséquilibrée détectée selon les données de la charge déséquilibrée reçues du capteur (6) et qui libère le fluide électrorhéologique (ER) maintenu en l'état solide autour de la paroi intérieure (8) en le liquéfiant, et qui solidifie le fluide électrorhéologique (ER) liquéfié dans le compartiment (4) en appliquant le champ électrique au moment où il atteint la paroi extérieure (9) par l'effet de la force centrifuge.
  6. Une machine à laver (1) selon l'une quelconque des revendications de 2 à 4, caractérisée par la carte de commande (7) qui, lorsque le capteur (6) détecte la suppression de déséquilibrage, libère le fluide électrorhéologique (ER) dans le compartiment (4) en supprimant le champ électrique appliqué à celui-ci lorsque le compartiment (4) s'approche la position du haut pendant la rotation du tambour (2).
  7. Une machine à laver (1) selon l'une quelconque des revendications précédentes, caractérisée par plus d'un commutateur (11) conducteur en forme de bague qui est périphériquement isolé et monté sur l'arbre (3), qui tourne avec l'arbre (3) et permet la transmission du courant électrique appliqué au fluide électrorhéologique (ER) aux compartiments (4) par des câbles ; plus d'un balai (12) qui permet la transmission du courant électrique généré dans une source d'alimentation au commutateur (11) et qui est fixé au corps du tambour (2) ou de la machine à laver (1) et est produit d'un fil fin en cuivre ou acier ; et plus d'une électrode (13) qui est située dans les compartiments (4) dans l'unité d'équilibrage (5) et qui transmet le courant électrique reçu des commutateurs (11) au fluide électrorhéologique (ER) dans les compartiments (4).
  8. Une machine à laver (1) selon les revendications 7 et 3, caractérisée par les électrodes (13) qui sont disposées entre les parois de compartiment (10) et sur la paroi intérieure (8), et qui s'étendent dans la direction radiale de la paroi intérieure (8) vers la paroi extérieure (9) dans le compartiment (4).
  9. Une machine à laver (1) selon l'une quelconque des revendications précédentes, caractérisée par l'unité d'équilibrage (5) où un nanofluide électrorhéologique (NER) incluant des nanoparticules qui lui permettent d'atteindre une solidité presque solide lorsque le champ électrique est appliqué.
EP10718608A 2009-05-22 2010-05-11 Machine à laver dont le tambour équilibre la charge Not-in-force EP2432926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200903976 2009-05-22
PCT/EP2010/056468 WO2010133480A1 (fr) 2009-05-22 2010-05-11 Machine à laver dont le tambour équilibre la charge

Publications (2)

Publication Number Publication Date
EP2432926A1 EP2432926A1 (fr) 2012-03-28
EP2432926B1 true EP2432926B1 (fr) 2013-03-20

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Family Applications (1)

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EP10718608A Not-in-force EP2432926B1 (fr) 2009-05-22 2010-05-11 Machine à laver dont le tambour équilibre la charge

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EP (1) EP2432926B1 (fr)
WO (1) WO2010133480A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436173A (zh) * 2016-11-28 2017-02-22 珠海格力电器股份有限公司 洗衣机及其配重装置、配重调节系统和配重调节方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9708740B2 (en) 2012-06-07 2017-07-18 Samsung Electronics Co., Ltd. Balancer, balancer housing, washing machine having the same and control method thereof
US9441697B2 (en) * 2012-06-07 2016-09-13 Samsung Electronics Co., Ltd. Balancing module and washing machine having the same
KR101955024B1 (ko) * 2012-06-07 2019-05-30 삼성전자주식회사 밸런서, 밸런서 하우징 및 이를 구비한 세탁기 및 그 제어 방법
PL2671995T3 (pl) * 2012-06-07 2015-07-31 Samsung Electronics Co Ltd Wyważarka, obudowa wyważarki, pralka, która jest w nie wyposażona i sposób jej sterowania
KR101944370B1 (ko) * 2012-10-12 2019-02-07 삼성전자주식회사 밸런서를 갖는 세탁기 및 그 제어 방법
KR102160971B1 (ko) 2013-11-05 2020-10-05 삼성전자주식회사 밸런서 및 이를 갖는 세탁기
DE102014108856B3 (de) * 2014-06-25 2015-04-30 Miele & Cie. Kg Waschmaschine mit Unwuchtkompensation
WO2020182449A1 (fr) * 2019-03-11 2020-09-17 Arcelik Anonim Sirketi Lave-linge/sèche-linge dans lequel une charge déséquilibrée est équilibrée avec un fluide

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JPH03261500A (ja) * 1990-03-12 1991-11-21 Matsushita Electric Ind Co Ltd 全自動洗濯機
JPH08229287A (ja) * 1995-02-27 1996-09-10 Sharp Corp 流体バランサ
JP4306880B2 (ja) * 1999-07-16 2009-08-05 三洋電機株式会社 洗濯機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106436173A (zh) * 2016-11-28 2017-02-22 珠海格力电器股份有限公司 洗衣机及其配重装置、配重调节系统和配重调节方法
CN106436173B (zh) * 2016-11-28 2019-02-19 珠海格力电器股份有限公司 洗衣机及其配重装置、配重调节系统和配重调节方法

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WO2010133480A1 (fr) 2010-11-25
EP2432926A1 (fr) 2012-03-28

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