EP1882769B1 - Machine à laver avec un capteur de mouvement - Google Patents

Machine à laver avec un capteur de mouvement Download PDF

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Publication number
EP1882769B1
EP1882769B1 EP06117834A EP06117834A EP1882769B1 EP 1882769 B1 EP1882769 B1 EP 1882769B1 EP 06117834 A EP06117834 A EP 06117834A EP 06117834 A EP06117834 A EP 06117834A EP 1882769 B1 EP1882769 B1 EP 1882769B1
Authority
EP
European Patent Office
Prior art keywords
motion sensor
machine
floor
laundry machine
casing
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
EP06117834A
Other languages
German (de)
English (en)
Other versions
EP1882769A1 (fr
Inventor
Stefano Galassi
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to PL06117834T priority Critical patent/PL1882769T3/pl
Priority to AT06117834T priority patent/ATE523623T1/de
Priority to ES06117834T priority patent/ES2373325T3/es
Priority to EP06117834A priority patent/EP1882769B1/fr
Priority to PCT/EP2007/006465 priority patent/WO2008012032A1/fr
Priority to RU2009106465/12A priority patent/RU2009106465A/ru
Publication of EP1882769A1 publication Critical patent/EP1882769A1/fr
Application granted granted Critical
Publication of EP1882769B1 publication Critical patent/EP1882769B1/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
    • D06F34/16—Imbalance
    • 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
    • D06F2103/26—Imbalance; Noise level

Definitions

  • the present invention relates to a laundry machine with a motion sensor.
  • the present invention may be used to particular advantage in a washing machine, to which the following description refers purely by way of example.
  • the vibration generated by the washing machine may be resonance-amplified to an unacceptable noise level.
  • drum rotation speeds at which resonance phenomena occur mainly depend, however, on installation conditions, and in particular on the type of floor, optimum drum rotation speed varies from one machine to another and from one installation to another, so that it is practically impossible to determine beforehand, at the manufacturing stage, the rotation speeds at which resonance phenomena occur and which are therefore to be avoided.
  • US5930855A1 describes a method of optimizing the rotation speed of a washing machine drum to minimize vibration of the machine: the washing machine employs an accelerometer mounted close to the top of the casing to sense machine vibration, and a computer software program monitors, records, and compares machine vibrations over a range of rotation speeds to determine a rotation speed which minimizes machine vibration.
  • US 2004/0154351 discloses a vibration sensing assembly for sensing the vibration of the tub with respect to the casing and including a fixing part fixed to an inner wall of the cabinet, a rotational part rotatable connected to the fixing part to perform a rotational movement within a predetermined range by the vibration of the tub centering around a portion connected to the fixing part, and a sensor provided to the rotational part to sense the rotational movement of the rotational part.
  • GB 1 146 664 discloses a sensor device, which is disposed at, or adjacent to, a suitable location within the appliance which is sensitive to the vibrational movement during operation thereof.
  • the device includes a piezoelectric crystal, which generates a voltage signal indicative of the amplitude of the vibrational movement. If the monitored amplitude exceeds a predetermined threshold value, thereby indicating that the machine is being subjected to excessive vibrational movement, a microprocessor causes the machine to go into a re-distribute mode to attempt to re-distribute the uneven load of the machine.
  • DE 10 2004 049 647 discloses a method of monitoring a washing machine aggregate for impermissible or atypical movements during a first phase of a washing program while water is being filled into the aggregate and for discontinuing the filling upon detection of such movement as may result, for instance, from the presence of a child or animal in the aggregate.
  • EP 1 167 609 discloses accelerometers or optical means which are directed along a direction that is sensitive to the effect of a load which is dynamically unbalanced, the direction being parallel to the axis of rotation of the drum.
  • BE 1 010 008 disclose a method for determining residual moisture during a drying process, more specifically for drying linen, whereby the drying process is regulated in accordance with the desired residual moisture, a specific feature being that the residual moisture is determined by means of a measurement of the quantity of water present in the linen.
  • Number 1 in Figure 1 indicates as a whole a washing machine comprising a casing 2 resting on a floor 3 on a number of feet 4.
  • Casing 2 supports a revolving drum 5 (defining a wash tub) which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to casing 2.
  • Drum 5 is rotated about rotation axis 6 by an electric motor 8 connected to drum 5 by a transmission system, which comprises a belt 9 connecting a pulley 10, fitted to the shaft of drum 5, directly to a pulley 11 fitted to the shaft of electric motor 8.
  • electric motor 8 is coaxial with drum 5, and the shaft of drum 5 is connected rigidly to the shaft of electric motor 8.
  • Electric motor 8 is equipped with a drive system 12; and a tachometer generator 13 (or other equivalent speed-sensing device) for measuring the speed of electric motor 8 and therefore the rotation speed of drum 5.
  • Drive system 12 of the motor is preferably operated on the basis of the difference between the command (desired) speed and the actual speed as read by tachometer generator 13.
  • Washing machine 1 also comprises a control unit 14, which receives user commands from a user interface 15, and controls overall operation of washing machine 1.
  • Control unit 14 is connected to at least one machine vibration-sensing accelerometer 16.
  • vibration-sensing accelerometer 16 is replaced by a different type of motion sensor.
  • Control unit 14 implements a known method of analysing machine vibration to determine the rotation speeds at which machine vibration is maximum and/or minimum and so identify the rotation speeds at which resonance phenomena occur. During normal use, drum 5 is obviously rotated at different speeds from those at which resonance phenomena occur. The method of determining the rotation speeds at which machine vibration is maximum and/or minimum may be performed only once, after the washing machine is actually installed, may be performed at given periods, or may be performed at each cycle.
  • accelerometer 16 is located close to a foot 4 and therefore close to floor 3.
  • Various tests and analyses show this to be the most effective position for high-precision sensing the most dangerous machine vibration. In fact, the worst (in particular, noisiest) situation occurs when machine vibration interacts with, causing resonance of, floor 3.
  • Locating accelerometer 16 close to a foot 4, i.e. close to the mechanical transmission element between casing 2 and floor 3, enables high-precision sensing by accelerometer 16 machine vibration transmission between casing 2 and floor 3.
  • accelerometer 16 is fixed (preferably screwed) to casing 2 of washing machine 1, close to a foot 4.
  • accelerometer 16 is fixed (preferably screwed) to a foot 4 of casing 2.
  • accelerometer 16 is fixed to floor 3, close to a foot 4.
  • accelerometer 16 is preferably fixed rigidly to floor 3, e.g. glued to floor 3 using bi-adhesive tape 17, and is preferably located under, for mechanical protection by, casing 2.
  • Washing machine 1 as described above has numerous advantages, by being easy to implement and highly effective and efficient in sensing machine vibration, on account of the position of accelerometer 16.
  • the above structure also applies to any other kind of laundry machine, such as a drier or a washer-drier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (6)

  1. Lave-linge (1) comprenant :
    une enveloppe (2) reposant sur un sol (3) sur un certain nombre de pieds (4) ;
    un tambour rotatif (5) supporté par l'enveloppe (2) ;
    une unité de commande (14) implémentant un procédé d'analyse des vibrations de la machine ; et
    au moins un capteur de mouvement (16) connecté à l'unité de commande (14) ;
    le lave-linge (1) étant caractérisé en ce que le capteur de mouvement (16) est fixé au sol (3) et est situé près d'un pied (4).
  2. Lave-linge (1) selon la revendication 1, dans lequel le capteur de mouvement (16) est fixé rigidement au sol (3).
  3. Lave-linge (1) selon la revendication 2, dans lequel le capteur de mouvement (16) est collé au sol (3).
  4. Lave-linge (1) selon la revendication 3, dans lequel le capteur de mouvement (16) est collé au sol (3) au moyen d'une bande adhésive double face (17).
  5. Lave-linge (1) selon l'une quelconque des revendications 2 à 4, dans lequel le capteur de mouvement (16) est situé sous l'enveloppe (2) pour être protégé mécaniquement par l'enveloppe (2).
  6. Lave-linge (1) selon la revendication 1, dans lequel le capteur de mouvement (16) est un accéléromètre.
EP06117834A 2006-07-25 2006-07-25 Machine à laver avec un capteur de mouvement Not-in-force EP1882769B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL06117834T PL1882769T3 (pl) 2006-07-25 2006-07-25 Maszyna pralnicza z czujnikiem ruchu
AT06117834T ATE523623T1 (de) 2006-07-25 2006-07-25 Waschmaschine mit bewegungssensor
ES06117834T ES2373325T3 (es) 2006-07-25 2006-07-25 Lavadora de colada con un sensor de movimiento.
EP06117834A EP1882769B1 (fr) 2006-07-25 2006-07-25 Machine à laver avec un capteur de mouvement
PCT/EP2007/006465 WO2008012032A1 (fr) 2006-07-25 2007-07-20 Machine de blanchisserie comprenant un détecteur de mouvement
RU2009106465/12A RU2009106465A (ru) 2006-07-25 2007-07-20 Машина для обработки белья с датчиком перемещения

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06117834A EP1882769B1 (fr) 2006-07-25 2006-07-25 Machine à laver avec un capteur de mouvement

Publications (2)

Publication Number Publication Date
EP1882769A1 EP1882769A1 (fr) 2008-01-30
EP1882769B1 true EP1882769B1 (fr) 2011-09-07

Family

ID=37603251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06117834A Not-in-force EP1882769B1 (fr) 2006-07-25 2006-07-25 Machine à laver avec un capteur de mouvement

Country Status (6)

Country Link
EP (1) EP1882769B1 (fr)
AT (1) ATE523623T1 (fr)
ES (1) ES2373325T3 (fr)
PL (1) PL1882769T3 (fr)
RU (1) RU2009106465A (fr)
WO (1) WO2008012032A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223820A1 (de) * 2013-11-21 2015-05-21 Robert Bosch Gmbh Überwachungseinheit für ein Haushaltsgerät zur Detektion der Bewegung des Haushaltsgeräts

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101520665B1 (ko) * 2008-07-14 2015-05-15 엘지전자 주식회사 의류처리장치의 운전 제어방법
DE102010002048A1 (de) 2010-02-17 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Verfahren zur Einstellung einer Schleuderdrehzahl einer Trommel eines Hausgeräts zur Pflege von Wäschestücken
US8468631B2 (en) 2010-09-28 2013-06-25 Whirlpool Corporation Method for controlling a laundry treating appliance based on a floor parameter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH651602A5 (en) * 1982-07-20 1985-09-30 Terraillon Washing machine
GB2146664A (en) * 1983-09-20 1985-04-24 Thorn Emi Domestic Appliances Vibration detector for washing machine
BE1010008A3 (nl) * 1996-01-22 1997-11-04 Ipso Internatinal Naamloze Ven Werkwijze voor het bepalen van restvochtigheid tijdens een droogproces en inrichting om deze werkwijze te verwezenlijken.
ES2226663T5 (es) * 2000-06-30 2008-02-16 Whirlpool Corporation Metodo para detectar y controlar el desequilibrio dinamico en un tambor de una maquina lavadora y maquina lavadora que utiliza dicho metodo.
KR100505227B1 (ko) * 2002-11-28 2005-08-03 엘지전자 주식회사 세탁기의 터브 과진동 감지 장치
DE102004049647B3 (de) * 2004-10-11 2006-01-26 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223820A1 (de) * 2013-11-21 2015-05-21 Robert Bosch Gmbh Überwachungseinheit für ein Haushaltsgerät zur Detektion der Bewegung des Haushaltsgeräts

Also Published As

Publication number Publication date
PL1882769T3 (pl) 2012-05-31
ATE523623T1 (de) 2011-09-15
ES2373325T3 (es) 2012-02-02
WO2008012032A1 (fr) 2008-01-31
RU2009106465A (ru) 2010-08-27
EP1882769A1 (fr) 2008-01-30

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