EP0878575B1 - Procédé pour équilibrer un corps tournant - Google Patents

Procédé pour équilibrer un corps tournant Download PDF

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Publication number
EP0878575B1
EP0878575B1 EP98107766A EP98107766A EP0878575B1 EP 0878575 B1 EP0878575 B1 EP 0878575B1 EP 98107766 A EP98107766 A EP 98107766A EP 98107766 A EP98107766 A EP 98107766A EP 0878575 B1 EP0878575 B1 EP 0878575B1
Authority
EP
European Patent Office
Prior art keywords
speed
imbalance
temperature
weights
balancing
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.)
Expired - Lifetime
Application number
EP98107766A
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German (de)
English (en)
Other versions
EP0878575A1 (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
Original Assignee
Miele und Cie KG
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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 FR 1 213 067. She uses it freely Weights that can be moved within the raceway to compensate for an imbalance.
  • the balancing primarily refers to an unbalance caused by an uneven distributed laundry mass is caused in a laundry drum.
  • 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 in arranged a means to increase the running friction of the weights.
  • 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 method of producing the annular raceways (12) 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 well distributed around the drum circumference; so that better dewatering of the laundry and the least 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 the 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)

Claims (11)

  1. Procédé pour l'équilibrage de corps tournants utilisant un dispositif se composant d'une bande de roulement (12) de forme circulaire tournant avec le corps et disposée de manière concentrique à son axe de rotation, à l'intérieur de laquelle sont disposés au moins deux poids (13, 16) pouvant se déplacer librement, caractérisé par les étapes suivantes :
    accélération du corps jusqu'à un premier régime de rotation (nV; nA) avec lequel se forme un balourd stationnaire (15),
    saisie de la position du balourd (15)
    poursuite de l'accélération du corps, à partir d'une position dans laquelle le balourd (15) se trouve à l'opposé du centre de gravité (S) des poids, jusqu'à un deuxième régime de rotation (nS) situé au-dessus du régime de rotation critique du corps ou de son système de paliers.
  2. Procédé pour l'équilibrage de corps tournants selon la revendication 1, caractérisé en ce que la poursuite de l'accélération a lieu de manière discontinue avant que le régime de rotation critique (nR) ne soit atteint.
  3. Procédé pour l'équilibrage du tambour (3) d'une machine à laver à tambour (1) selon l'une des revendications 1 ou 2, caractérisé en ce que la position du balourd (15) est saisie dans la zone de régime de rotation de distribution ou d'application (tV; tA) lors de l'accélération d'essorage.
  4. Dispositif pour la réalisation du procédé pour l'équilibrage de corps tournants, en particulier du tambour (3) d'une machine à laver à tambour (1), selon l'une des revendications 1 à 3, caractérisé en ce que dans la bande de roulement (12) est disposé un produit servant à augmenter l'adhérence de glissement des poids.
  5. Dispositif selon la revendication 4, caractérisé en ce que la bande de roulement (12) est remplie au moins partiellement d'un produit d'amortissement visqueux (14).
  6. Dispositif selon l'une des revendications 4 ou 5, caractérisé par un dispositif pour la saisie de la taille et de la position d'un balourd (15) sur la base d'une grandeur caractéristique du moteur d'entraínement (14) pour la mise en rotation du corps, qui est fonction du régime de rotation.
  7. Dispositif selon les revendications 5 à 6, caractérisé en ce qu'un dispositif de saisie de la température (18) capte la température (υ) du produit d'amortissement visqueux (14) et en ce qu'un dispositif de commande accélère le corps à partir d'une position, qui dépend de la température et de la position du balourd (15), jusqu'au deuxième régime de rotation (nS).
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif de commande règle la vitesse de la montée en régime en fonction de la température.
  9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que des billes (13) sont utilisées comme poids.
  10. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que des ensembles de billes (16) sont utilisés comme poids.
  11. Dispositif selon la revendication 10, caractérisé en ce que sur les ensembles de billes (16) est disposée au moins une plaque (17), qui comprend perpendiculairement à la direction de déplacement une surface de section pouvant être modifiée en fonction de la température.
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
DE19718321 1997-04-30
DE19718321A DE19718321C1 (de) 1997-04-30 1997-04-30 Verfahren zum Auswuchten von rotierenden Körpern

Publications (2)

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

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Family Applications (1)

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EP98107766A Expired - Lifetime EP0878575B1 (fr) 1997-04-30 1998-04-29 Procédé pour équilibrer un corps tournant

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230532B (zh) * 2007-01-24 2011-10-12 三星电子株式会社 具有平衡器的洗衣机及其控制方法

Families Citing this family (16)

* 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
DE59806178D1 (de) * 1997-12-20 2002-12-12 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
DE19849594C1 (de) * 1998-10-27 2000-03-30 Miele & Cie Waschmaschine oder Waschtrockner
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
DE10000235B4 (de) 2000-01-05 2005-09-22 Snap-On Equipment Gmbh Vorrichtung zum Messen einer Rotorunwucht
DE10116977C2 (de) * 2000-05-17 2003-03-27 Miele & Cie Waschmaschine mit einer Auswuchteinrichtung
US6578225B2 (en) * 2000-05-25 2003-06-17 Skf Autobalance Systems Ab Low-speed prebalancing for washing machines
CN1183283C (zh) 2000-06-23 2005-01-05 惠尔普尔公司 洗衣机
KR101267334B1 (ko) 2006-11-06 2013-05-23 삼성전자주식회사 세탁기의 볼 밸런서 제어방법
WO2010105313A1 (fr) * 2009-03-20 2010-09-23 Safedin Zelic Mécanisme inertiel d'auto-équilibrage
KR101689714B1 (ko) * 2010-04-01 2016-12-26 엘지전자 주식회사 세탁기 및 그 제어방법
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
DE102018105894A1 (de) 2018-03-14 2019-09-19 Miele & Cie. Kg Auswuchtvorrichtung, Trommelwaschmaschine mit einer Auswuchtvorrichtung und Verfahren zum Auswuchten
FR3087862B1 (fr) 2018-10-26 2020-12-11 Airbus Helicopters Systeme et procede de reglage du comportement d'un arbre de transmission de puissance

Family Cites Families (6)

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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.
GB1598399A (en) * 1977-06-02 1981-09-16 Hitachi Ltd Drum type automatic electric washing machine
DE3822924C1 (fr) * 1988-07-07 1989-11-23 Miele & Cie Gmbh & Co, 4830 Guetersloh, De
CA2069120C (fr) * 1992-05-21 2005-04-26 Anton Gasafi Methode et appareil de correction de balourd
IT1289380B1 (it) * 1996-05-30 1998-10-02 Electrolux Zanussi Elettrodome Lavabiancheria con procedimento perfezionato di bilanciamento dinamico

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230532B (zh) * 2007-01-24 2011-10-12 三星电子株式会社 具有平衡器的洗衣机及其控制方法

Also Published As

Publication number Publication date
ES2178074T3 (es) 2002-12-16
DE59804484D1 (de) 2002-07-25
DE19718321C1 (de) 1998-10-29
EP0878575A1 (fr) 1998-11-18

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