EP1882770B1 - Verfahren zur Installation einer Waschmaschine - Google Patents

Verfahren zur Installation einer Waschmaschine Download PDF

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Publication number
EP1882770B1
EP1882770B1 EP06117836A EP06117836A EP1882770B1 EP 1882770 B1 EP1882770 B1 EP 1882770B1 EP 06117836 A EP06117836 A EP 06117836A EP 06117836 A EP06117836 A EP 06117836A EP 1882770 B1 EP1882770 B1 EP 1882770B1
Authority
EP
European Patent Office
Prior art keywords
drum
speeds
decelerating
over
accelerating
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
EP06117836A
Other languages
English (en)
French (fr)
Other versions
EP1882770A1 (de
Inventor
Giuseppe Frucco
Giovanni Colombera
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 AT06117836T priority Critical patent/ATE427375T1/de
Priority to DE602006006050T priority patent/DE602006006050D1/de
Priority to EP06117836A priority patent/EP1882770B1/de
Priority to PL06117836T priority patent/PL1882770T3/pl
Priority to ES06117836T priority patent/ES2321645T3/es
Priority to PCT/EP2007/006591 priority patent/WO2008012077A1/en
Publication of EP1882770A1 publication Critical patent/EP1882770A1/de
Application granted granted Critical
Publication of EP1882770B1 publication Critical patent/EP1882770B1/de
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
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise 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
    • 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
    • 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
    • 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
    • D06F37/24—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 vertical axis

Definitions

  • the present invention relates to a method of installing a laundry machine.
  • the installation method according to the present invention may be used to particular advantage for 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 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.
  • Number 1 in the attached drawing 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 a machine vibration-sensing accelerometer 16.
  • accelerometer 16 is fixed to casing 2 of washing machine 1, close to one foot 4.
  • accelerometer 16 is fixed to a foot 4 of casing 2.
  • accelerometer 16 is fixed to floor 3, close to one foot 4.
  • Control unit 14 implements a method of installing washing machine 1 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 installing washing machine 1 comprises the steps of emptying drum 5 completely; providing the empty drum 5 with a predetermined unbalance; and then accelerating and/or decelerating drum 5 over a range of speeds.
  • control unit 14 senses the rotation speeds of drum 5 by means of tachometer generator 13, and senses machine vibration by means of accelerometer 16 over the range of speeds (in an alternative embodiment, vibration-sensing accelerometer 16 is replaced by a different type of motion sensor).
  • control unit 14 compares machine vibration over the range of speeds, and determines the rotation speeds at which machine vibration is maximum and/or minimum.
  • the predetermined unbalance of drum 5 is only added to determine the rotation speeds at which machine vibration is maximum and/or minimum, and is therefore defined by a calibrated mass 17 which is fixed temporarily in a predetermined position to an inner surface of drum 5 before accelerating and/or decelerating drum 5, and which is removed after accelerating and/or decelerating drum 5.
  • the predetermined unbalance of drum 5 is intrinsic and permanent (i.e. is always present, even during normal use), and is defined by a calibrated mass 17 fixed to an outer surface of drum 5.
  • calibrated mass 17 is much lighter than the nominal working load of drum 5, and is for example more than 50 g and between 50 g and 100 g.
  • the step of accelerating and/or decelerating drum 5 over a range of speeds comprises accelerating drum 5 steadily from zero to maximum rotation speed with a spinning ramp (for example a linear spinning ramp), and then decelerating drum 5 steadily from maximum rotation speed to zero with a spinning ramp (for example a linear spinning ramp).
  • a spinning ramp for example a linear spinning ramp
  • the above installation method has numerous advantages, by being easy to implement and highly effective and efficient.
  • the above installation method is highly effective by accurately and quickly determining real installation conditions using a predetermined unbalance of known position and weight.
  • the above installation method is efficient by only being performed once, after the washing machine is actually installed, and by not having to be repeated at each wash cycle.
  • the above installation method also applies to any other kind of laundry machine, such as a drier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (18)

  1. Verfahren zur Installation einer Waschmaschine (1), die eine rotierende Trommel (5) aufweist, wobei das Verfahren folgende Schritte umfasst:
    Beschleunigen und/oder Verlangsamen der Trommel (5) auf unterschiedliche Geschwindigkeiten;
    Messen der Drehzahlen der Trommel (5) und der Maschinenvibrationen bei den unterschiedlichen Geschwindigkeiten;
    Vergleichen der Maschinenvibrationen bei den unterschiedlichen Geschwindigkeiten; und
    Feststellen der Drehzahlen, bei denen die Maschinenvibration am größten und/oder geringsten ist;
    wobei das Verfahren dadurch gekennzeichnet ist, dass es noch folgende weitere Schritte umfasst:
    Vollständiges Entleeren der Trommel (5) vor dem Beschleunigen und/oder Verlangsamen der Trommel (5) bei unterschiedlichen Geschwindigkeiten; und
    Ausstatten der leeren Trommel (5) mit einer festgelegten Unwucht, bevor die Trommel (5) auf unterschiedliche Geschwindigkeiten beschleunigt und/oder verlangsamt wird.
  2. Verfahren gemäß Anspruch 1, wobei die festgelegte Unwucht der Trommel (5) der Trommel einverleibt und permanent ist.
  3. Verfahren gemäß Anspruch 2, wobei die festgelegte Unwucht der Trommel (5) von einer geeichten Masse (17) definiert wird, die an einer Außenfläche der Trommel (5) befestigt ist.
  4. Verfahren gemäß Anspruch 3, wobei die geeichte Masse (17) wesentlich leichter ist als die Nennarbeitslast der Trommel (5).
  5. Verfahren gemäß Anspruch 4, wobei das Gewicht der geeichten Masse (17) über 50 g beträgt.
  6. Verfahren gemäß Anspruch 4, wobei das Gewicht der geeichten Masse (17) zwischen 50 g und 100 g beträgt.
  7. Verfahren gemäß Anspruch 1, bei dem das festgelegte Ungleichgewicht der Trommel (5) nur hinzugefügt wird, um die Drehzahlen zu bestimmen, bei denen die Maschinenvibration am größten und/oder am geringsten ist, wobei das Verfahren den zusätzlichen Schritt der Entfernung der Unwucht der Trommel (5) nach Bestimmung der Drehzahlen, bei denen die Maschinenvibration am größten und/oder am geringsten ist, aufweist.
  8. Verfahren gemäß Anspruch 7, bei dem die Unwucht der Trommel (5) von einer geeichten Masse (17) definiert wird, die vorübergehend an einer Innenfläche der Trommel (5) befestigt ist, bevor die Trommel (5) beschleunigt und/oder verlangsamt wird, und wobei die Unwucht nach der Beschleunigung und/oder Verlangsamung der Trommel (5) entfernt wird.
  9. Verfahren gemäß einem der Ansprüche 1 bis 7, bei dem die Maschinenvibration von mindestens einem Bewegungssensor (16) gemessen wird.
  10. Verfahren gemäß Anspruch 9, bei dem der Beschleunigungsmesser (16) an einem Gehäuse (2) der Waschmaschine (1) befestigt ist,
  11. Verfahren gemäß Anspruch 10, bei dem das Gehäuse (2) der Waschmachine (1) mehrere auf einem Boden (3) stehende Füße (4) aufweist, wobei der Beschleunigungsmesser (16) am Gehäuse (2) in der Nähe eines Fußes (4) befestigt ist.
  12. Verfahren gemäß Anspruch 10, bei dem der Beschleunigungsmesser (16) an einem Fuß (4) des Gehäuses (2) befestigt ist.
  13. Verfahren gemäß Anspruch 9, bei dem die Waschmaschine (1) ein Gehäuse (2) mit mehreren auf einem Boden (3) stehenden Füßen (4) aufweist, wobei der Beschleunigungsmesser (16) am Boden (3) in der Nähe eines Fußes (4) befestigt ist.
  14. Verfahren gemäß einem der Ansprüche 1 bis 13, wobei der Schritt der Beschleunigung und/oder Verlangsamung der Trommel (5) bei unterschiedlichen Geschwindigkeiten die gleichmäßige Beschleunigung der Trommel (5) von Null auf eine Maximaldrehzahl mit einer Schleuderrampe umfasst.
  15. Verfahren gemäß einem der Ansprüche 1 bis 13, wobei der Schritt der Beschleunigung und/oder Verlangsamung der Trommel (5) bei unterschiedlichen Geschwindigkeiten die gleichmäßige Verlangsamung der Trommel (5) von einer Maximaldrehzahl auf Null mit einer Schleuderrampe umfasst.
  16. Verfahren gemäß einem der Ansprüche 1 bis 15, das den zusätzlichen Schritt der Ermittlung der Drehzahlen umfasst, bei denen Resonanzphänomene auftreten, indem die Drehzahlen ermittelt werden, bei denen die Maschinenvibration am höchsten ist.
  17. Verfahren gemäß Anspruch 16, das den zusätzlichen Schritt der Rotation der Trommel im normalen Gebrauch bei Drehzahlen umfasst, die sich von den Drehzahlen unterscheiden, bei denen Resonanzphänomene auftreten.
  18. Waschmaschine (1), die eine Steuereinheit (14) umfasst, die das Installationsverfahren gemäß einem der Ansprüche 1 bis 17 implementiert.
EP06117836A 2006-07-25 2006-07-25 Verfahren zur Installation einer Waschmaschine Not-in-force EP1882770B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT06117836T ATE427375T1 (de) 2006-07-25 2006-07-25 Verfahren zur installation einer waschmaschine
DE602006006050T DE602006006050D1 (de) 2006-07-25 2006-07-25 Verfahren zur Installation einer Waschmaschine
EP06117836A EP1882770B1 (de) 2006-07-25 2006-07-25 Verfahren zur Installation einer Waschmaschine
PL06117836T PL1882770T3 (pl) 2006-07-25 2006-07-25 Sposób instalowania urządzenia pralniczego
ES06117836T ES2321645T3 (es) 2006-07-25 2006-07-25 Metodo de instalacion de una maquina de lavanderia.
PCT/EP2007/006591 WO2008012077A1 (en) 2006-07-25 2007-07-25 Method of installing a laundry machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06117836A EP1882770B1 (de) 2006-07-25 2006-07-25 Verfahren zur Installation einer Waschmaschine

Publications (2)

Publication Number Publication Date
EP1882770A1 EP1882770A1 (de) 2008-01-30
EP1882770B1 true EP1882770B1 (de) 2009-04-01

Family

ID=37685799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06117836A Not-in-force EP1882770B1 (de) 2006-07-25 2006-07-25 Verfahren zur Installation einer Waschmaschine

Country Status (6)

Country Link
EP (1) EP1882770B1 (de)
AT (1) ATE427375T1 (de)
DE (1) DE602006006050D1 (de)
ES (1) ES2321645T3 (de)
PL (1) PL1882770T3 (de)
WO (1) WO2008012077A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8695381B2 (en) * 2008-03-28 2014-04-15 Electrolux Home Products, Inc. Laundering device vibration control
KR20130025265A (ko) * 2011-09-01 2013-03-11 삼성전자주식회사 세탁기 및 그 제어방법
KR20150072652A (ko) * 2013-12-20 2015-06-30 동부대우전자 주식회사 언밸런스 특성이 개선된 세탁기와 언밸런스 오프셋 설정방법
KR102348371B1 (ko) * 2017-07-05 2022-01-07 엘지전자 주식회사 세탁물 처리 장치의 제어 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564537A (en) * 1994-04-04 1996-10-15 Cooper Tire & Rubber Company Adaptive-passive vibration control system
JP3030228B2 (ja) * 1995-04-14 2000-04-10 三洋電機株式会社 遠心脱水装置
US5924312A (en) * 1997-12-23 1999-07-20 Maytag Corporation Multiple direction vibration absorber
US5930855A (en) * 1997-12-23 1999-08-03 Maytag Corporation Accelerometer for optimizing speed of clothes washer

Also Published As

Publication number Publication date
WO2008012077A1 (en) 2008-01-31
ATE427375T1 (de) 2009-04-15
DE602006006050D1 (de) 2009-05-14
EP1882770A1 (de) 2008-01-30
ES2321645T3 (es) 2009-06-09
PL1882770T3 (pl) 2009-08-31

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