EP0924330B1 - Machine à laver à tambour ou sèche-linge et procédé pour laver et essorer du linge dans une machine à laver ou une machine à laver et à sécher - Google Patents

Machine à laver à tambour ou sèche-linge et procédé pour laver et essorer du linge dans une machine à laver ou une machine à laver et à sécher Download PDF

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Publication number
EP0924330B1
EP0924330B1 EP98123813A EP98123813A EP0924330B1 EP 0924330 B1 EP0924330 B1 EP 0924330B1 EP 98123813 A EP98123813 A EP 98123813A EP 98123813 A EP98123813 A EP 98123813A EP 0924330 B1 EP0924330 B1 EP 0924330B1
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EP
European Patent Office
Prior art keywords
drum
speed
washing
weights
machine
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
EP98123813A
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German (de)
English (en)
Other versions
EP0924330A1 (fr
Inventor
Christian Beier
Dominic Beier
Rudolf Herden
Klemens Dr. Klamt
Thorsten Kuka
Helge Müller
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Miele und Cie KG
Original Assignee
Miele und Cie KG
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.)
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP0924330A1 publication Critical patent/EP0924330A1/fr
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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
    • 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
    • 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 washing machine or a washer-dryer for washing and Spin laundry with a drum (2), which is driven by a drive motor (4) a horizontal or inclined axis is rotatable, with a balancing device from at least one rotating with the drum (2), concentric to its axis of rotation arranged annular raceway (12; 20), within the at least two weights (13; 24) are freely movable, with means (14; 22, 23) for taking the weights (13; 24) in the career (12; 20), and with speed control means (6a-d) for driving the Drive motor (4) such that the drum (2) from a washing speed below the application speed is accelerated to a spin speed above the landing speed if the center of gravity of the weights (13; 24) is in a predetermined range.
  • the invention relates to a method for balancing the drum of such a washing machine or such a washer dryer.
  • a washing machine or washer-dryer and a balancing method of this type are from the subsequently published DE-C
  • EP 0 640 192 B1 describes a so-called ball balancer, in which Balls are freely movable within a track attached to the drum. When the drum rotates, these align with the laundry imbalance and compensate them up to the size of the total weight of the balls.
  • DE 27 53 610 C2 In addition to the ball balancer, systems with a similar effect are known (DE 27 53 610 C2), in which weights mounted on rollers rotate in a track with the body to be balanced. With a horizontal axis of rotation of the body, it must be ensured that the balls or weights rotate with the track and do not roll due to their gravity in the lower region of the track. For this purpose, it is proposed in EP 0 640 192 B1 to fill the track with a material which, due to the resistance it exerts (friction, viscous damping), takes the balls with it at the start of the rotation. A viscous damping agent, especially oil, has proven itself here, since liquids with low viscosity do not produce the desired effect. As an alternative to this, DE 27 53 610 C2 describes a device which fixes the weights to the inner edge of the raceway using springs below a predetermined speed and the centrifugal force associated therewith.
  • the disadvantage of the balancing devices described above is that they are compensatory Effect only above the resonance frequency or critical speed of the system unfold in which the rotating body is stored (see, for example, Kellenberger: elastic balancing; Springer Verlag 1987; P. 402f). In the subcritical speed range, the existing Unbalance can even be increased. Therefore the main area of application is an automatic one Ball balancer on fast rotating machines with a constant speed above all occurring resonance frequencies.
  • the automatic Ball balancer for example, when a washing machine spins up to be used with a horizontal or inclined axis of rotation. Both Amplitudes in the steady supercritical state as well as when driving through the Resonances can be reduced.
  • DE 196 14 721 A1 describes a Textile spinner described in which a weight on the drum as a fixed unbalance is arranged by accelerating the drum from a position in which the Weight is in the 12 o'clock position, the laundry should be unbalanced specifically trained against the fixed unbalance and thus partially compensate for both unbalances. Is the laundry imbalance due to low filling of the drum or good distribution but only slightly, the drum is with the entire spin cycle Fixed unbalance A rotated, which leads to the consequences described elsewhere.
  • the invention thus poses the problem of a washing machine or a washer-dryer and a method for washing and spinning laundry in such an apparatus disclose, in which both in the subcritical and in the supercritical area a safe Reduction of the total imbalance of the drum is achieved.
  • this problem is solved by a washing machine or a washer-dryer with the features specified in claim 1 and by a method with the Claim 9 specified features solved.
  • Advantageous refinements and developments the washing machine or washer-dryer result from the following Dependent claims.
  • the means for taking the weights consist of a viscous damping means arranged in the track, the viscosity and the size of the weights being dimensioned such that the weights are entrained at the washing speed.
  • a simply constructed ball balancer can be used, but when selecting the damping agent, it is only necessary to ensure that it is viscous enough even at high alkali temperatures up to 100 ° C to take the balls with it even at washing speeds around 50 min -1 .
  • fixation devices in the form of reducing the cross section of the raceway can be used Locking devices are used.
  • Locking devices are used.
  • Such facilities are from program control adjustable and are therefore not subject to external temperature influences.
  • the acceleration of the drum from a washing speed below the application speed can be used in washing machines with a ball balancer and damping agent-filled track after a stopping time or slight swiveling the drum in which the balls are gravity to the lowest point of the track have dropped.
  • the center of gravity of the balls is in the 6 o'clock position
  • means for sensing the position of the weights or the center of gravity can be used. This will, on the one hand, provide greater security the position of the fixed unbalance is reached, on the other hand the program run times are shortened.
  • a speed signal corresponding to the drum speed drum or drive motor can, for example, be the signal component of a speed signal corresponding to the drum speed drum or drive motor.
  • a displacement or acceleration signal of the tub can be used. This makes use of the fact that the laundry freely moving in the drum below the feed speed and no stationary imbalances yet has trained. Thus, the only periodic fluctuations in speed, displacement and acceleration caused by the unbalance.
  • suitable signal analysis e.g. Filtering of the aforementioned signals can thus be carried out in a simple manner and using already existing sensors (motor control, determination of the laundry weight) the position the center of gravity and the resulting unbalance become.
  • the balls from one Manufacture material with ferromagnetic properties and its location by a fixed Determine magnetic sensor. This does require additional resources, but it is a faster and possibly more precise determination of the position of the center of gravity is possible. In addition, information about the time of the imbalance-related alignment of the Bullets are obtained.
  • FIG. 1 shows the parts essential for the invention in a schematic diagram Washing machine.
  • the washing machine designed according to the invention has a tub (1), in which a drum (2) for receiving laundry (3) is rotatably mounted.
  • the drum (2) is driven by a motor (4), the power transmission by a V-belt (5).
  • the speed of the motor can be controlled in a known manner by a in the microprocessor control (6) the washing machine integrated motor controller (6a) program and can be set depending on the condition.
  • the tub is swinging on springs (7) in the housing (8) and becomes Damping of these vibrations in the lower area by shock absorbers (9) compared to Supported base (10). To further dampen the vibrations are on the tub (1) Additional weights (11) arranged so that it passes through the critical Speed range does not strike the housing (8).
  • So-called ball balancers are used as balancing systems in the drum cap and the drum base (12; 13) are used, wherein for producing the annular raceways (12) an inexpensive deep-drawing process is used.
  • these career (12) are individual Balls (13) arranged as weights and can freely in the circumferential direction of the drum move. To ensure maximum compensation, each track (12) must be in tightest packing can be filled with balls in a given angular range. By Setting the size and number of balls (13) can cause an imbalance in the order of magnitude of their total weight are generated and thus also compensated.
  • the computer circuit filters the weight signal in a known manner Drum speed corresponding frequency range and determines the position of the Fixed unbalance A.
  • the displacement sensor (14) for example, one from DE 19522393 A1 known acceleration sensor can be used.
  • a further computer circuit (6c) can determine the position of the fixed unbalance A by method Evaluation of the fluctuations of a speed-dependent signal (motor current, slip ...) or determine the speed yourself (with a tachometer generator (15)).
  • a speed-dependent signal motor current, slip
  • one in the Computer circuit (6c) integrated filter the frequency range corresponding to the drum speed extract.
  • Figure 3 shows the speed signal of the tachometer generator at washing speed and the filtered unbalance signal at a rotation of the drum at a speed.
  • an evaluation circuit (6d) influences the motor controller (6a) and thus the speed curve the drum (2).
  • Another possibility for determining the position of the balls (13) consists of these to produce a material with ferromagnetic properties and a fixed magnetic sensor (not shown) to be arranged, for example, on the tub (1).
  • FIGs 2a and b show an embodiment of a ball balancer, in which a Filling the track (20) with oil can be omitted.
  • the ball balancer shown has an annular raceway (20) in which individual balls (24) are arranged as weights are. These can be in the circumferential direction of any body to be balanced (not shown) move freely.
  • each Raceway (20) in the densest packing in an angular range ⁇ ⁇ 180 ° filled with balls (24) become. This can cause an imbalance for a given size and number of balls (24) of 1 kg, for example, and thus also be compensated.
  • An elastic hose (22) is provided on the inner surface (21) of the raceway (20) as a fixing device. arranged, which can be set by the microprocessor control (not shown) Pump device (23) can be filled with air or another medium. This will the cross section of the raceway (20) is reduced and the balls (24) are fixed in their position.
  • the hose (22) can be subdivided, the individual segments (22a, 22b, 22c) then can be filled by separate pump devices (23a, 23b, 23c). This way you can initially a single segment (22b) is inflated at the end of the spinning process then the balls collect. You can then pump up the rest Segments (22a, 22c) are fixed.
  • the hose (22) Relieve pressure before spinning and stop the drum (2). hereby the balls (24) collect due to gravity in the lower part of the track (20) and can then be tightly packed together by inflating the tube (22) in the densest packing be fixed horizontally.
  • the track of ball balancers can be used Mechanically compact rolling or embossing. Other procedures by which the career for the weights are hardened, for example a hardness-increasing surface coating or cold compression is also possible. In addition to the running noises This avoids excessive stress at high speeds.
  • the alkali is first pumped out. Then the Drum (2) stopped for a holding time or swiveled slightly. This is dimensioned that the balls (13) sink due to gravity into the deepest area of the raceway (12) can. The drum (2) is then further rotated at the washing speed.
  • the position of the center of gravity of the ball which is the Represents the center of a fixed unbalance A, determined by one of the computer circuits (6b, 6c) become.
  • the washing speed n 1 and the initial acceleration are known to the microprocessor control (6) as manipulated variables, the weight of the laundry (3) can be measured with the displacement sensor (15).
  • the type of laundry can be determined from its suction behavior, which in turn can be determined with the displacement sensor (15) or with a level sensor not shown in the drawings.
  • the microprocessor control determines a position of the fixed unbalance A, from which acceleration then takes place. Such a method can generally be used for fixed unbalances, even if these are generated by stationary weights on the drum.
  • the acceleration is carried out initially until reaching a spin speed n 3, n 2 above the settling speed, but is crit below the critical speed range .DELTA.n.
  • This first spin speed n 3 is kept constant by the motor control for a time phase t 2 - t 3 in which the size and position of the unbalances A and B or the resulting total unbalance C is determined again. It is checked whether the prescribed placement of the laundry with respect to the fixed unbalance A was successful and the unbalances A and B are exactly opposite. In addition, it must be ensured that the overall imbalance C does not exceed a maximum value, which may occur .DELTA.n crit inadmissible vibration when passing through the critical speed range. If these conditions are met, the speed can be increased in a known manner until the final spin speed n 4 is reached.
  • the above-described method for changing the position of the weights can also be used are formed without a laundry imbalance or a determination of the Positions of unbalance A and B were made. Then the drum from the Standstill accelerated immediately to the first spin speed. Starting from any Placement of the unbalances relative to one another makes the position of the fixed unbalance A possibly existing Laundry unbalance B shifted with the method described above until it face each other and the resulting total unbalance C is as low as possible.

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

Claims (13)

  1. Lave-linge ou sèche-linge pour laver et essorer du linge, comprenant un tambour (2) pouvant tourner autour d'un axe horizontal ou incliné sous l'action d'un moteur d'entraínement (4), comprenant également un dispositif d'équilibrage composé d'au moins une glissière (12; 20) en forme d'anneau de cercle qui fait tout le tour du tambour (2) et qui est disposée de façon concentrique par rapport à l'axe de rotation de ce dernier, glissière dans laquelle sont placés au moins deux poids (13 ; 24) mobiles librement, des moyens (14 ; 22, 23) pour entraíner les poids (13 ; 24) dans la glissière (12 ; 20) et des moyens de contrôle de la vitesse de rotation (6a-d) pour commander le moteur d'entraínement (4) de manière à ce que le tambour (2) subisse une accélération lui permettant de passer d'une vitesse de rotation de lavage inférieure à la vitesse nominale à une vitesse de rotation d'essorage supérieure à la vitesse nominale lorsque le centre de gravité des poids (13 ; 24) se trouve dans une zone prédéfinie, caractérisé en ce que les moyens pour entraíner les poids sont réalisés de telle sorte que les poids soient entraínés lorsque la vitesse de rotation du tambour se situe dans une plage dont la valeur minimale est inférieure à la vitesse de rotation de lavage.
  2. Lave-linge ou sèche linge à tambour selon la revendication 1, caractérisé en ce que les moyens d'entraínement des poids (13) sont constitués par un agent amortissant (14) visqueux placé dans la glissière (12), sa viscosité et la dimension des poids (13) étant telles que ces derniers sont entraínés lorsque la vitesse de rotation de lavage est atteinte.
  3. Lave-linge ou sèche linge à tambour selon la revendication 1, caractérisé en ce que les moyens d'entraínement sont composés d'un dispositif de fixation (22 ; 23) réduisant la section transversale de la glissière (20).
  4. Lave-linge ou sèche linge à tambour selon la revendication 3, caractérisé en ce que la glissière est au moins partiellement trempée ou présente un revêtement de surface qui en augmente la dureté.
  5. Lave-linge ou sèche-linge à tambour selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'avant de subir une accélération l'amenant d'une vitesse de rotation de lavage inférieure à la vitesse nominale à une vitesse d'essorage supérieure à la vitesse nominale, le tambour (2) est immobilisé ou effectue un faible mouvement pendulaire.
  6. Lave-linge ou sèche-linge à tambour selon l'une ou plusieurs des revendications 1 à 5, caractérisé par un dispositif (6b ; 6c) pour détecter la position des poids (13 ; 24) ou un déséquilibre fixe (A) à une vitesse de rotation inférieure à la vitesse nominale.
  7. Lave-linge ou sèche linge à tambour selon la revendication 6, caractérisé en ce que, pour détecter la position du déséquilibre fixe (A), on utilise la fréquence d'un signal de vitesse de rotation du tambour (2) ou du moteur d'entraínement (4) et/ou d'un signal de poids, de course ou d'accélération de la cuve (1), laquelle fréquence correspondant à une vitesse de rotation du tambour.
  8. Lave-linge ou sèche linge à tambour selon la revendication 6, caractérisé en ce que, pour détecter la position des poids (13 ; 24), ceux-ci sont fabriqués en un matériau à forte perméabilité, et en ce qu'au moins un capteur magnétique fixe est placé dans la carrosserie (8) du lave-linge ou sur la cuve de lessive (1).
  9. Procédé pour équilibrer le tambour d'un lave-linge ou d'un sèche-linge pendant un processus de lavage ou d'essorage, le tambour étant entraíné en rotation autour d'un axe de rotation horizontal ou incliné par un moteur d'entraínement (4), à l'aide d'un dispositif d'équilibrage composé d'une glissière (12 ; 20) en forme d'anneau de cercle qui fait tout le tour du tambour et qui est disposée de façon concentrique par rapport à l'axe de rotation de ce dernier, glissière dans laquelle sont placés au moins deux poids (13 ; 24) mobiles librement, et à l'aide de moyens (14 ; 22, 23) pour entraíner les poids (13) dans la glissière dans une plage de vitesses de rotation du tambour dont la valeur minimale est inférieure à la vitesse de rotation de lavage, caractérisé en ce que le tambour (2) subit une accélération l'amenant d'une vitesse de rotation de lavage inférieure à la vitesse nominale à une vitesse de rotation d'essorage supérieure à la vitesse nominale lorsque le centre de gravité des poids (13 ; 24) se trouve dans une zone prédéfinie.
  10. Procédé selon la revendication 9, caractérisé en ce qu'avant de le soumettre à une accélération pour lui faire atteindre une vitesse de rotation d'essorage supérieure à la vitesse nominale, on immobilise le tambour (2) pendant un temps d'arrêt, et en ce qu'ensuite le tambour (2) continue à tourner tout d'abord à la vitesse de rotation de lavage tandis que la commande par microprocesseur (6) compte les rotations du tambour.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que l'on fait subir au tambour (2) une accélération pour l'amener d'une vitesse de rotation de lavage inférieure à la vitesse nominale à une vitesse de rotation d'essorage supérieure à la vitesse nominale lorsque le centre de gravité des poids (13 ; 24) se trouve dans une zone prédéfinie, sachant que la zone est déterminée par une commande par microprocesseur (6) en fonction de la vitesse de rotation de lavage et/ou de l'accélération initiale du tambour (2) et/ou de la nature et/ou du poids du linge (3).
  12. Procédé selon l'une des revendications 9 à 11, caractérisé par les étapes supplémentaires suivantes :
    relevé de la grandeur et de la position du déséquilibre fixe A produit par les poids, du déséquilibre causé par le linge B et/ou de la grandeur du déséquilibre total C résultant de la somme de ces déséquilibres ;
    production d'impulsions d'accélération positives ou négatives pour modifier la position des poids lorsque le déséquilibre total est supérieur à un déséquilibre seuil prédéfini ou lorsque les déséquilibres A et B ne sont pas situés à l'opposé l'un de l'autre par rapport à l'axe du tambour ;
    répétition du relevé de la grandeur et de la position des déséquilibres A et B ou du déséquilibre total C résultant de la somme de ces déséquilibres et des étapes suivantes.
  13. Procédé pour équilibrer le tambour selon la revendication 12, caractérisé en ce qu'après un nombre prédéfini de répétitions, l'accélération d'essorage est interrompue et le linge est nouvellement réparti.
EP98123813A 1997-12-20 1998-12-15 Machine à laver à tambour ou sèche-linge et procédé pour laver et essorer du linge dans une machine à laver ou une machine à laver et à sécher Expired - Lifetime EP0924330B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19757132 1997-12-20
DE19757130 1997-12-20
DE19757130 1997-12-20
DE19757132 1997-12-20
DE19808850 1998-03-03
DE19808850 1998-03-03

Publications (2)

Publication Number Publication Date
EP0924330A1 EP0924330A1 (fr) 1999-06-23
EP0924330B1 true EP0924330B1 (fr) 2002-11-06

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EP98123813A Expired - Lifetime EP0924330B1 (fr) 1997-12-20 1998-12-15 Machine à laver à tambour ou sèche-linge et procédé pour laver et essorer du linge dans une machine à laver ou une machine à laver et à sécher

Country Status (3)

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EP (1) EP0924330B1 (fr)
DE (2) DE19857663A1 (fr)
ES (1) ES2186081T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6550292B1 (en) 2000-04-03 2003-04-22 Whirlpool Corporation Dynamic balancer for an automatic washer
DE10231719B3 (de) * 2002-07-13 2004-04-22 Pfaff Industrie Maschinen Ag Nähmaschine mit einer Dämpfungsvorrichtung
KR101085495B1 (ko) * 2006-11-06 2011-11-23 삼성전자주식회사 드럼 세탁기의 터브 진동제어방법
KR101156713B1 (ko) * 2006-11-06 2012-06-15 삼성전자주식회사 드럼 세탁기 및 그 제어방법
KR101428477B1 (ko) * 2007-01-24 2014-08-12 삼성전자 주식회사 세탁기 및 그 제어방법
KR20090119560A (ko) 2008-05-16 2009-11-19 엘지전자 주식회사 세탁물 처리기기
WO2011115384A2 (fr) * 2010-03-15 2011-09-22 엘지전자 주식회사 Machine à linge et procédé de commande associé
AU2013204355B2 (en) 2012-12-21 2016-10-27 Fisher & Paykel Appliances Limited Improved laundry appliance
DE102017219050A1 (de) 2017-10-25 2019-04-25 BSH Hausgeräte GmbH Wäschetrommelanordnung
CN115949860A (zh) * 2023-03-03 2023-04-11 菏泽市自然资源和规划局 一种国土空间规划测绘用水准仪

Family Cites Families (4)

* 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.
DE3822924C1 (fr) * 1988-07-07 1989-11-23 Miele & Cie Gmbh & Co, 4830 Guetersloh, De
DE19718321C1 (de) * 1997-04-30 1998-10-29 Miele & Cie Verfahren zum Auswuchten von rotierenden Körpern

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ES2186081T3 (es) 2003-05-01
DE19857663A1 (de) 1999-06-24
EP0924330A1 (fr) 1999-06-23
DE59806178D1 (de) 2002-12-12

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