EP0878575A1 - Procédé pour équilibrer un corps tournant - Google Patents

Procédé pour équilibrer un corps tournant Download PDF

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Publication number
EP0878575A1
EP0878575A1 EP98107766A EP98107766A EP0878575A1 EP 0878575 A1 EP0878575 A1 EP 0878575A1 EP 98107766 A EP98107766 A EP 98107766A EP 98107766 A EP98107766 A EP 98107766A EP 0878575 A1 EP0878575 A1 EP 0878575A1
Authority
EP
European Patent Office
Prior art keywords
speed
unbalance
drum
weights
temperature
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.)
Granted
Application number
EP98107766A
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German (de)
English (en)
Other versions
EP0878575B1 (fr
Inventor
Rainer Blum
Klemens Dr. Klamt
Heige Müller
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.)
Miele und Cie KG
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Miele und Cie KG
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Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP0878575A1 publication Critical patent/EP0878575A1/fr
Application granted granted Critical
Publication of EP0878575B1 publication Critical patent/EP0878575B1/fr
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
    • 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
    • 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

Definitions

  • the invention relates to a method for balancing rotating bodies using a device consisting of at least one concentrically rotating body to its axis of rotation arranged annular raceway, within the at least two weights are freely movable.
  • Such a device is known for example from EP 0 640 192 B1. This is what it is about is a so-called ball balancer, in which balls are released within the track are movably arranged.
  • a ball balancer has a compensatory effect only unfolded above the resonance frequency or critical speed of the system in which the rotating body is supported (see e.g. Kellenberger: elastic balancing; springer Publishing company; P. 402f). In the subcritical speed range, the existing unbalance is even reinforced. Therefore, the main area of application for an automatic ball balancer is in fast rotating machines with a constant speed above all occurring Resonance frequencies.
  • the automatic ball balancer for example, when a washing machine with a horizontal spin-up Use axis of rotation. Both the amplitudes in the steady state supercritical state as well as when driving through the resonances can be reduced.
  • EP 0 349 798 B1 describes a method for controlling the spinning process in washing machines known in which the drum from a fixed, previously determined position of the Unbalance is accelerated out. This procedure is designed to reduce unbalance Deflections of the vibrating system of the washing machine, but not to Remove or reduce the imbalance.
  • the invention therefore has the problem of a method and a device for balancing of rotating bodies of the type mentioned above, which (s) in subcritical range does not lead to an increase in the unbalance.
  • the advantages achievable with the invention result from the fact that the acceleration of the Body takes place from a defined position, in which the weights are out of balance first fully or partially compensate. In this way, statistically, less Vibration amplitudes of the body to be balanced than with a random initial distribution the weights are expected.
  • the speed is before reaching the critical speed advantageously increased suddenly or at least very quickly prevent the weights from being aligned in a position that increases the unbalance.
  • a means to increase the running friction of the weights At a horizontal axis of rotation of the body is ensured by such a means that the Balls rotate with the raceway and not due to their gravity in the lower area of the Roll off the web.
  • a viscous damping agent, especially oil has proven itself here, as liquids with low viscosity do not produce the desired effect and highly viscous masses or sand disturb the orientation of the balls in the supercritical area.
  • damping agents unfortunately lead to considerable problems in their disposal.
  • their viscosity strongly temperature-dependent, so that their use in rotating bodies with fluctuating Temperature, for example in washing machine drums in suds containers with different tempered lye, difficult.
  • a temperature detection device the ambient temperature of the track detected and if a control device Bodies from a dependent on the ambient temperature and the position of the unbalance Position accelerated to the second speed.
  • the temperature influences of the Damping device on the position of the balls before accelerating to the supercritical Speed can be reduced.
  • FIG. 1 is a drum washing machine (1) with a swinging suspended Indoor unit shown schematically.
  • a washing drum is in a tub (2) (3) rotatably mounted and is driven by an electric motor (4).
  • the Regulation (6) of the motor (4) and a device (7) for detecting the unbalance (15) of the Drum (3) are integrated in a microprocessor control (5).
  • a microprocessor control (5) As an indication of a possibly This unbalance (15) can cause the fluctuations in the speed, the motor current consumption and / or the torque can be evaluated.
  • it creates with tachogenerator (8) connected to the motor shaft one of the respective rotational speeds of the laundry drum (3) corresponding voltage.
  • the actual voltage generated by the tachometer generator (8) with a target voltage corresponding to the desired speed (reference voltage) compared.
  • the motor control variable is influenced.
  • Balancing systems are used in the drum cap (9) and the drum base (10) (See FIG. 2), an inexpensive one for producing the annular raceways (11) Thermoforming process is used.
  • Figure 3 shows a longitudinal section through a raceway (12), with individual balls (13) as weights are recognizable. These can have a circular cross-section (12) move freely meridional. To ensure the maximum compensation, each track (12) in the densest packing in an angular range ⁇ ⁇ 180 ° with balls (13) be filled. So with the horizontal axis of rotation the gravity acting on the ball (13) is overcome from a desired rotational speed and the balls (13) of the career, it must be with a viscous damping agent (14) be filled, advantageously using oil. Without this damping agent (14) the balls (13) would only be subject to rolling friction and thus at the lowest point of the Roll career (12) without developing their compensatory effect.
  • the laundry drum (3) runs through a laundry distribution speed range t V when accelerating from a washing speed n W.
  • this distribution speed range t V the laundry is distributed well around the drum circumference, so that better drainage of the laundry and the lowest possible imbalance (15) is achieved.
  • a laundry application speed range t A with a constant application speed n A can be traversed following the laundry distribution speed range t V.
  • any imbalance (15) that may be present is sensed by the microprocessor control (5) of the drum washing machine (1).
  • the size and position of the unbalance (15) are sensed by evaluating the fluctuations in the speed, the motor current or the torque in relation to the motor control.
  • the size of the change in speed is a measure of the size of the unbalance (15).
  • the speed, the Mortor current consumption and the torque provide information about the position of the unbalance (15) in the drum (3).
  • the microprocessor control (5) therefore first senses the position of the unbalance (15) and starts the centrifugal run-up according to the invention exactly when unbalance (15) and Oppose the center of gravity of the ball diametrically. It should be noted that the microprocessor control (5) the location of the center of gravity (S) must be known. A sensation with the help of position sensors is used when using several individual balls (13) reasonable effort not possible. Therefore, the rolling behavior of the balls (13) must be in Test series observed and the friction-dependent position of the center of gravity (S) in be stored in a memory of the microprocessor control.
  • the decisive factor here is The fact that the viscous damping with a drum washing machine (1) different lye temperature relevant temperature range between 20 ° C and 70 ° C Varies at least by a factor of 2, since no more viscosity-stable liquids are known.
  • the phase angle of the unbalance position during spin-up must therefore depend on the temperature ( ⁇ ) can be varied, since the drain position of the Balls (13) changes in the subcritical speed range. Acceleration must also be accelerated be modified because the time to distribute the balls (13) depending on Viscosity of the damping agent (14) changes and only then an amplitude reduction in Resonance passage is guaranteed.
  • the temperature ( ⁇ ) of the damping agent is with the The alkali temperature is identical and can therefore be measured using an existing temperature sensor (18) be detected on the tub (2).
  • FIG. 8 shows another embodiment in which, instead of individual balls (13), ball trains (16) be used.
  • Bimetal plate (17) At the ends of each ball train (16) there is one Bimetal plate (17), which, depending on the temperature, the gap width to the edges of the track (12) varies and thus keeps the viscous damping of the ball trains (16) constant.
  • this Trap will be the adaptation of the acceleration, as well as the temperature-dependent change dispensing with the phase spin angle.
  • Another advantage of the ball trains (16) is in that the sliding friction with each other and the collision of the balls (13) is prevented, which has a positive effect on the noise situation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Testing Of Balance (AREA)
EP98107766A 1997-04-30 1998-04-29 Procédé pour équilibrer un corps tournant Expired - Lifetime EP0878575B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19718321A DE19718321C1 (de) 1997-04-30 1997-04-30 Verfahren zum Auswuchten von rotierenden Körpern
DE19718321 1997-04-30

Publications (2)

Publication Number Publication Date
EP0878575A1 true EP0878575A1 (fr) 1998-11-18
EP0878575B1 EP0878575B1 (fr) 2002-06-19

Family

ID=7828260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107766A Expired - Lifetime EP0878575B1 (fr) 1997-04-30 1998-04-29 Procédé pour équilibrer un corps tournant

Country Status (3)

Country Link
EP (1) EP0878575B1 (fr)
DE (2) DE19718321C1 (fr)
ES (1) ES2178074T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0997568A1 (fr) * 1998-10-27 2000-05-03 Miele & Cie. GmbH & Co. Machine à laver ou séchoir à linge
WO2001050108A1 (fr) * 2000-01-05 2001-07-12 Snap-On Deutschland Holding Gmbh Dispositif pour mesurer le balourd d'un rotor
WO2001090473A1 (fr) * 2000-05-25 2001-11-29 Skf Autobalance Systems Ab Pre-equilibrage a basse vitesse d'un lave-linge
EP1167612A2 (fr) * 2000-06-23 2002-01-02 Whirpool Corporation Procédé et système de suspension pour réduire le déplacement de la cuve pendant l'accélération du tambour lors de l'essorage
WO2011122915A3 (fr) * 2010-04-01 2012-06-14 엘지전자 주식회사 Machine à laver et son procédé de commande
EP2821538A1 (fr) * 2013-06-25 2015-01-07 Whirlpool Corporation Procédé de fonctionnement d'un appareil de traitement de linge doté de compensateurs à roulement
DE102017219081A1 (de) 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Haushaltsgeräts zur Pflege von Wäschestücken mit Erkennung einer Unwucht anhand von zwei Eingangskanälen sowie Haushaltsgerät
FR3087862A1 (fr) 2018-10-26 2020-05-01 Airbus Helicopters Systeme et procede de reglage du comportement d'un arbre de transmission de puissance

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19842611C2 (de) * 1997-12-10 2000-11-16 Miele & Cie Waschmaschine oder Waschtrockner
DE19857663A1 (de) * 1997-12-20 1999-06-24 Miele & Cie Trommelwaschmaschine oder Waschtrockner bzw. Verfahren zum Waschen und Schleudern von Waschgut in einer Waschmaschine oder einem Waschtrockner
DE19802929C1 (de) 1998-01-27 1999-02-04 Miele & Cie Vorrichtung zum Auswuchten von rotierenden Körpern
DE19952464C2 (de) * 1999-10-29 2002-05-08 Miele & Cie Verfahren zum Auswuchten eines rotierenden Körpers, der durch einen geregelten Antrieb in Rotation versetzt wird, und Verwendung des Verfahrens
DE10116977C2 (de) * 2000-05-17 2003-03-27 Miele & Cie Waschmaschine mit einer Auswuchteinrichtung
KR101267334B1 (ko) 2006-11-06 2013-05-23 삼성전자주식회사 세탁기의 볼 밸런서 제어방법
KR101428477B1 (ko) * 2007-01-24 2014-08-12 삼성전자 주식회사 세탁기 및 그 제어방법
WO2010105313A1 (fr) * 2009-03-20 2010-09-23 Safedin Zelic Mécanisme inertiel d'auto-équilibrage
DE102018105894A1 (de) 2018-03-14 2019-09-19 Miele & Cie. Kg Auswuchtvorrichtung, Trommelwaschmaschine mit einer Auswuchtvorrichtung und Verfahren zum Auswuchten

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1213067A (fr) * 1957-11-08 1960-03-29 Frame Machine à laver
DE1912481U (de) * 1961-07-24 1965-03-18 Siemens Elektrogeraete Gmbh Einrichtung zum schleudern von wasche mit elastischer aufhaengung des trommelaggregats.
FR2393097A1 (fr) * 1977-06-02 1978-12-29 Hitachi Ltd Machine a laver electrique du type a tambour et entierement automatique
EP0349798A2 (fr) * 1988-07-07 1990-01-10 Miele & Cie. GmbH & Co. Procédé pour commander l'essorage dans une machine à laver
EP0810316A1 (fr) * 1996-05-30 1997-12-03 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Procédé d'équilibrage dynamique pour machine à laver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2069120C (fr) * 1992-05-21 2005-04-26 Anton Gasafi Methode et appareil de correction de balourd

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1213067A (fr) * 1957-11-08 1960-03-29 Frame Machine à laver
DE1912481U (de) * 1961-07-24 1965-03-18 Siemens Elektrogeraete Gmbh Einrichtung zum schleudern von wasche mit elastischer aufhaengung des trommelaggregats.
FR2393097A1 (fr) * 1977-06-02 1978-12-29 Hitachi Ltd Machine a laver electrique du type a tambour et entierement automatique
EP0349798A2 (fr) * 1988-07-07 1990-01-10 Miele & Cie. GmbH & Co. Procédé pour commander l'essorage dans une machine à laver
EP0810316A1 (fr) * 1996-05-30 1997-12-03 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Procédé d'équilibrage dynamique pour machine à laver

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0997568A1 (fr) * 1998-10-27 2000-05-03 Miele & Cie. GmbH & Co. Machine à laver ou séchoir à linge
WO2001050108A1 (fr) * 2000-01-05 2001-07-12 Snap-On Deutschland Holding Gmbh Dispositif pour mesurer le balourd d'un rotor
US6708563B2 (en) 2000-01-05 2004-03-23 Snap-On Equipment Gmbh Device for measuring rotor imbalance
WO2001090473A1 (fr) * 2000-05-25 2001-11-29 Skf Autobalance Systems Ab Pre-equilibrage a basse vitesse d'un lave-linge
US6578225B2 (en) 2000-05-25 2003-06-17 Skf Autobalance Systems Ab Low-speed prebalancing for washing machines
EP1167612A2 (fr) * 2000-06-23 2002-01-02 Whirpool Corporation Procédé et système de suspension pour réduire le déplacement de la cuve pendant l'accélération du tambour lors de l'essorage
EP1167612A3 (fr) * 2000-06-23 2003-02-26 Whirlpool Corporation Procédé et système de suspension pour réduire le déplacement de la cuve pendant l'accélération du tambour lors de l'essorage
US6647575B2 (en) 2000-06-23 2003-11-18 Whirlpool Corporation Method and apparatus for reducing wash tub displacement during spin cycle ramp-up
WO2011122915A3 (fr) * 2010-04-01 2012-06-14 엘지전자 주식회사 Machine à laver et son procédé de commande
CN102844487A (zh) * 2010-04-01 2012-12-26 Lg电子株式会社 洗衣机及其控制方法
RU2507327C1 (ru) * 2010-04-01 2014-02-20 ЭлДжи ЭЛЕКТРОНИКС ИНК. Стиральная машина и способ управления ею
CN102844487B (zh) * 2010-04-01 2015-04-29 Lg电子株式会社 洗衣机及其控制方法
US9243361B2 (en) 2010-04-01 2016-01-26 Lg Electronics Inc. Washing machine and method for controlling same
EP2557216A4 (fr) * 2010-04-01 2017-10-04 LG Electronics Inc. Machine à laver et son procédé de commande
EP2821538A1 (fr) * 2013-06-25 2015-01-07 Whirlpool Corporation Procédé de fonctionnement d'un appareil de traitement de linge doté de compensateurs à roulement
US9493897B2 (en) 2013-06-25 2016-11-15 Whirlpool Corporation Method of operation for a laundry treating appliance having a ball balance ring
DE102017219081A1 (de) 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Haushaltsgeräts zur Pflege von Wäschestücken mit Erkennung einer Unwucht anhand von zwei Eingangskanälen sowie Haushaltsgerät
WO2019081223A1 (fr) 2017-10-25 2019-05-02 BSH Hausgeräte GmbH Procédé pour le fonctionnement d'un appareil électroménager pour l'entretien du linge pourvu d'une détection d'un balourd à l'aide de deux canaux d'entrée ainsi qu'appareil domestique.
FR3087862A1 (fr) 2018-10-26 2020-05-01 Airbus Helicopters Systeme et procede de reglage du comportement d'un arbre de transmission de puissance

Also Published As

Publication number Publication date
DE59804484D1 (de) 2002-07-25
EP0878575B1 (fr) 2002-06-19
DE19718321C1 (de) 1998-10-29
ES2178074T3 (es) 2002-12-16

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