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EP3294941B1 - Procédé de détermination de la masse lors de l'introduction d'un lot de linge dans un tambour de lavage et machine de traitement du linge permettant la mise en oeuvre du procédé - Google Patents

Procédé de détermination de la masse lors de l'introduction d'un lot de linge dans un tambour de lavage et machine de traitement du linge permettant la mise en oeuvre du procédé Download PDF

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Publication number
EP3294941B1
EP3294941B1 EP16717160.2A EP16717160A EP3294941B1 EP 3294941 B1 EP3294941 B1 EP 3294941B1 EP 16717160 A EP16717160 A EP 16717160A EP 3294941 B1 EP3294941 B1 EP 3294941B1
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EP
European Patent Office
Prior art keywords
laundry
oscillating system
shock absorber
loading
inclination
Prior art date
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Application number
EP16717160.2A
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German (de)
English (en)
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EP3294941A1 (fr
Inventor
Ansgar RISCHKE
Antje Rahfoth
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP3294941A1 publication Critical patent/EP3294941A1/fr
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    • 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
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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 determining the laundry mass when introduced into a laundry treatment machine, in particular a washing machine, a washer-dryer or a tumble dryer, with a resiliently supported in a housing at least two with respect to the vertical axis intersecting points arranged spring system of a carrier and a laundry drum mounted therein and having means for detecting the displacement of the container system relative to the housing.
  • the invention also includes a laundry treating machine of the type described above, the oscillating system of which is suspended on springs and calmed by shock absorbers or mounted on struts, the at least one shock absorber of which is provided with a displacement sensor.
  • an acceleration sensor has already been used for monitoring fault conditions of the vibration system firmly connected to it ( DE 10 2011 089 624 A1 ). By detecting the rest position of the acceleration sensor deviating from the direction of gravitational acceleration, one can infer an error condition on the oscillating system, such as a heavy wear or the breakage of a spring or a damper.
  • the invention is based on the object to specify the detection of the lowering of the vibration system from the rest position as a function of the weight of the introduced laundry items and to distinguish from extraneous influences.
  • the method according to the invention can determine the load very accurately beyond such a known estimation method.
  • the inventive method is less expensive or offers at the same cost significantly higher accuracy. This is mainly due to the additional knowledge of the tendency of the vibrating system during loading.
  • the oscillating system 2 includes a laundry drum, not shown in detail, which is rotatably mounted about an axis 3 within a tub - according to the outer contour of the oscillating system 2.
  • the oscillating system 2 also includes an unillustrated drive motor and a transmission for the laundry drum. So that the oscillating system 2 can oscillate within the housing, it is articulated on shock absorbers or on springs. As shock absorbers, friction dampers are used regularly in the washing machine industry.
  • a shortening or lengthening of the distance the articulation points of a shock absorber to each other in measuring signals implement. If one wants to use these measuring signals when sinking the oscillating system 2 by additional load when introducing laundry parts into the laundry drum according to the invention for estimating the loading amount of the introduced laundry item, then the desired accuracy of this estimation counteracts the static friction of friction shock absorbers. As a result, measured values for the shortening or lengthening of the relevant shock absorber are almost always subject to a system error.
  • Fig. 1 shows this washing machine in an unloaded condition.
  • the oscillating system 2 is adjusted by the springs 4 and shock absorber 5 in a so-called rest position.
  • a displacement sensor 6 which is attached to one of the shock absorbers 5, the path reading "0".
  • another sensor an acceleration sensor 7, mounted on top of the vibrating system 2, based on a different physical principle than the displacement sensor 6. While the latter measures a distance, the measuring principle of the acceleration sensor 7 is based on the deviation of its position from vector of earth acceleration.
  • position of rest coincides the position vector 8 with the vector of gravitational acceleration; Therefore, the acceleration measurement value "0" also results at the acceleration sensor 7.
  • Both measured values on "0” allow for a calculation result that indicates an empty laundry drum.
  • Fig. 2 In the loading example of Fig. 2 is a medium laundry item W1 right of the vertical of the unloaded laundry drum.
  • the oscillating system 2 sinks somewhat, namely on the left shock absorber 5 more than on the right.
  • the path measured value at the displacement sensor 6 here corresponds, for example, to the value "5".
  • the acceleration sensor 7 now shifts its position, since the oscillating system 2 has tilted slightly to the right, correspondingly far to the right, so that its position (vector 8) deviates to the left by the angle ⁇ from the vector G of gravitational acceleration. In the calculation of the mass of the loading amount, this angle ⁇ corrects the value given by the path measurement value "5", which, taken into account in the calculation alone, would simulate a larger load.
  • the loading example of Fig. 3 shows a symmetrical loading of the laundry drum, so that both shock absorbers 5 sink in the same way. Therefore, the value "5" of the displacement sensor 6 can be used directly to evaluate the mass of the load; because the acceleration sensor 7 indicates a vector angle ⁇ against the gravitational acceleration G of "0 °".
  • the example described already improves the accuracy of the load calculation value compared with the prior art, because it has recently been taken into account that the load on the oscillating system 2 can be quite unbalanced due to the inserted laundry item W1 or W2.
  • the sole application of the displacement measurement value would be a symmetrical lowering of the vibration system 2, which, like the example of FIG Fig. 2 shows - in many cases deviates from the actual state. Without this consideration, the displacement sensor would have 6 in Fig. 2 an excessive amount of charge signaled. In Fig. 3 For example, it indicates the same depression, even though a clearly heavy laundry item W2 has been entered.
  • This improvement can be effected by taking a measure for releasing all the shock absorbers from their static friction state into the sliding friction (so-called "breakaway") at fixed intervals during insertion of the laundry articles.
  • the distances can generally be defined as evenly short, they can be determined by the respective insertion of laundry or by a calculated average of the detected feeds of laundry.
  • a measure may be a targeted drive pulse for the laundry drum.
  • all shock absorbers should experience an almost flawless strong deflection, so that from the measured deflection of a single shock absorber on the appropriate amount of the total load can be concluded.
  • the speed of the laundry drum may be equal to or higher than the speed at which the laundry is treated during the washing process for the drive pulse.
  • a then-adjusting state can also be displayed or verified with the acceleration sensor 7.
  • the acceleration sensor 7 thus indicates no deviation from the vector G of gravitational acceleration, the deflection indicated by the displacement sensor 6 directly governs the instantaneous loading. Otherwise, a conditional on the state of the vibrating system 2 correction factor would have to be considered.
  • acceleration sensors are already known which can generate measured values as a function of deflections in a plurality of axes.
  • an acceleration sensor 7 By using such an acceleration sensor 7, on the one hand, such a correction of the static friction can be more reliably calculated in a targeted "broken" oscillatory system.
  • the loads of those shock absorbers are better estimated, which are not equipped with a displacement sensor 6, as will be explained with reference to the following example.
  • the oscillating system 2 according to Fig. 4 is placed on three so-called struts 10, 11 and 12.
  • This combines one or more compression springs with a shock absorber per strut.
  • the use of such struts is therefore unnecessary the suspension of the vibrating system 2 at the top mounted springs (4 in Fig. 1 ).
  • One of these struts, z. B. the strut 10, is with a displacement sensor 6 according to the example Fig. 1 to 3 Provided.
  • a multiaxial measuring acceleration sensor 13 is mounted on the housing 1, the deflections can measure, for example, in the direction x of the axis 3 of the laundry drum and in the horizontal direction y transverse to the drum axis 3. In most cases, acceleration sensors are used which can also measure z in the vertical direction. However, the z-values can be disregarded in the present example.
  • Fig. 5 now shows a washing machine, the laundry load W3 unilaterally heavily loaded the strut 10, which therefore sinks disproportionately strong.
  • the displayed measured value "7" of the displacement sensor 6 is, however, in the calculation process with the angular values of the acceleration sensor 13 deviating from the acceleration vector G, ie the angle ⁇ in the X direction and the angle ⁇ in the y direction (the latter is not recognizable here), processed, so that at the end of the actual load state corresponding, corrected mass value for the introduced laundry items W3 can be displayed, no matter where the laundry drum, the mass of the laundry W3 concentrated.
  • Fig. 6 is again - as in Fig. 3 - Given the rare state of a symmetrically distributed mass of the laundry item W4, so that all struts 10, 11, 12 - equal system parameter sizes assumed - sinking deep, namely up to the value "5", as the displacement sensor 6 displays the strut 10.
  • This symmetrical distribution is also indicated by the acceleration sensor 13 whose measuring vector 8 coincides with the vector G of gravity in this example, ie its angle values are equal to "0".
  • the advantage of the method according to the invention is particularly noticeable when using a multiaxial acceleration sensor 13 ( 4 to 6 ). Namely, an increasing load is also indicated when the displacement sensor 6 indicates no change when the shock absorber of its shock absorber 10 is still in stiction, but the vibration system has already tilted by at least one other shock absorber 11 or 12 sunken. As a result, a new inclination position of the oscillatory system 2 is achieved, which is indicated by the change in angle of the measuring vector 8 of the acceleration sensor 13. In addition, it can also be recognized whether during loading a single shock absorber overcomes its static friction, because then adjusts a sudden change in the inclination of the vibrating system 2 in the direction of this shock absorber.
  • the following table shows how an existing static friction or the sudden overcoming of the static friction of a shock absorber during a loading process can be evaluated signals for unambiguous determination of the loading condition.
  • an embodiment according to 4 to 6 provided that no mechanical engineering measures are taken by which a static friction can be solved, for example by a short drive pulse.
  • the signal of the displacement sensor 6 with the inclination of the vibration system 2 (angle ⁇ or ⁇ of the acceleration sensor 13) are charged to the determined from the Wegensorsignal value of the mass Correct load accordingly.
  • the static load on all shock absorbers which is maintained at the same time as the load is continued, can no longer be determined without further measures.
  • even the acceleration sensor 13 would not change the inclination angle ⁇ or ⁇ more Show. In such a case, before starting the program, for example, a movement impulse for the laundry drum could be inserted.
  • the action should be repeated with at least one changed parameter.
  • the motion pulse could be repeated at a higher speed of the laundry drum.
  • a further repetition can be decided depending on whether the detected displacement sensor signal indicates loading at all. If this is not the case, cause 2 can be assumed and the action is not repeated. A breakaway is then not possible or only with even higher speeds. However, this would not be necessary anymore because obviously there is no or only very little loading.

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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. Procédé de détermination de la masse de linge lors de l'introduction dans une machine de traitement du linge, notamment une machine à laver, un lave-linge séchant ou un sèche-linge, comprenant un système oscillant (2) composé d'un support dans lequel est logé un tambour à linge et en appui élastique dans une carcasse (1), en au moins deux endroits répartis par rapport à la verticale coupant le centre de gravité, au moyen à chaque fois d'un amortisseur de chocs qui est exécuté en tant qu'amortisseur à friction, et comprenant un dispositif permettant de détecter (6, 7, 13) le déplacement du système oscillant (2) par rapport à la carcasse (1), dans lequel, à l'aide de moyens physiques indépendants les uns des autres, la trajectoire d'un abaissement du système oscillant (2) à partir de la position de repos, d'une part, et la direction (x, y) et l'angle (α, β) d'une inclinaison du système oscillant (2) par rapport à sa position normale dans la position de repos, d'autre part, sont détectés et les écarts détectés de l'abaissement et de l'inclinaison sont utilisés conjointement pour calculer la masse introduite, caractérisé en ce qu'une action visant à débloquer tous les amortisseurs de chocs de leur état de frottement par adhérence pour passer en friction de glissement est mise en oeuvre à intervalles prédéterminés pendant l'insertion des articles de linge.
  2. Procédé selon la revendication 1, caractérisé en ce que les intervalles sont déterminés par reconnaissance de l'insertion d'articles de linge.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce le premier principe physique est la mesure d'une distance d'abaissement du système oscillant (2) lors du chargement, et l'autre principe physique est la mesure d'un angle (α, β) d'inclinaison du système oscillant par rapport à la gravité (G).
  4. Procédé selon la revendication 5, caractérisé en ce que les intervalles effectifs déterminés d'insertion d'articles de linge sont convertis en une valeur moyenne qui sert de mesure pour fixer des intervalles moyens.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'action visant à débloquer tous les amortisseurs de chocs de leur état de frottement par adhérence pour passer en friction de glissement consiste en une impulsion d'entraînement du tambour à linge à une vitesse de rotation prédéterminée.
  6. Procédé selon la revendication 5, caractérisé en ce que l'impulsion d'entraînement est utilisée à plusieurs reprises.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que la vitesse de rotation est égale à une vitesse de rotation à laquelle le linge est traité pendant le processus de lavage.
  8. Procédé selon la revendication 5 ou 6, caractérisé en ce que la vitesse de rotation est supérieure à la vitesse de rotation à laquelle le linge est traité pendant le processus de lavage.
  9. Procédé selon l'une des revendications 6 à 8, caractérisé en ce que la vitesse de rotation de l'impulsion d'entraînement suivante est supérieure à celle de l'impulsion d'entraînement précédente.
  10. Procédé selon l'une des revendications 5 à 9, caractérisé en ce qu'une mesure permettant de reconnaître et de déterminer un balourd dans le tambour à linge est exécutée pendant l'action visant à débloquer tous les amortisseurs de chocs de leur état de frottement par adhérence pour passer en friction de glissement, par exemple par une impulsion de mouvement, et en ce qu'une reconnaissance d'un chargement du tambour à linge conduit à la détection du fait qu'au moins un des éléments de suspension élastique resp. d'amortissement comporte au moins une valeur de paramètre erronée, ainsi qu'à un ré-étalonnage et un enregistrement de la position zéro pour une position de base corrigée.
  11. Machine de traitement du linge permettant la mise en oeuvre du procédé selon l'une des revendications précédentes, comprenant un système oscillant (2) qui est suspendu à des ressorts (4) au niveau de sa partie supérieure et monté sur des amortisseurs de chocs (5) au niveau de sa partie inférieure, au moins deux amortisseurs de chocs (5) étant prévus, dont l'un (5) est relié à un capteur de course (6) qui mesure le déplacement axial de la partie reliée au boîtier de l'amortisseur de chocs (5) par rapport à la partie de l'amortisseur de chocs (5) reliée au piston, caractérisée en ce qu'un capteur d'accélération (7) est installé sur le côté extérieur du système oscillant (2), lequel capteur mesure l'inclinaison du système oscillant (2) en valeurs d'angle (α, β) dans au moins une direction (x, y) de façon que le vecteur (8) de la position d'inclinaison du capteur d'accélération (7) par rapport au vecteur (G) de la gravité soit déterminé, la machine de traitement du linge étant conçue pour mettre en oeuvre le procédé selon l'une des revendications précédentes.
  12. Machine de traitement du linge permettant la mise en oeuvre du procédé selon l'une des revendications 1 à 9, comprenant un système oscillant (2) qui est monté sur plus de deux jambes élastiques (10 à 12) qui comprennent à chaque fois un ou plusieurs ressorts de pression et un amortisseur de chocs, caractérisée en ce que l'amortisseur de chocs d'au moins une jambe élastique (10) est relié à un capteur de course (6) qui mesure le déplacement axial de la partie reliée au boîtier de l'amortisseur de chocs par rapport à la partie de l'amortisseur de chocs reliée au piston.
  13. Machine de traitement du linge selon la revendication 12, caractérisée en ce qu'un capteur d'accélération (13) est installé sur le côté extérieur du système oscillant (2), lequel capteur mesure l'inclinaison du système oscillant (2) en valeurs d'angle (α, β) dans deux directions (x, y) de façon que le vecteur (8) de la position d'inclinaison du capteur d'accélération (13) par rapport au vecteur (G) de la gravité soit déterminé.
EP16717160.2A 2015-05-11 2016-04-19 Procédé de détermination de la masse lors de l'introduction d'un lot de linge dans un tambour de lavage et machine de traitement du linge permettant la mise en oeuvre du procédé Active EP3294941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015208648.8A DE102015208648A1 (de) 2015-05-11 2015-05-11 Verfahren zum Bestimmen der Masse beim Einbringen eines Wäschepostens in eine Wäschetrommel und Wäschebehandlungsmaschine zum Durchführen des Verfahrens
PCT/EP2016/058648 WO2016180608A1 (fr) 2015-05-11 2016-04-19 Procédé de détermination de la masse lors de l'introduction d'un lot de linge dans un tambour de lavage et machine de traitement du linge permettant la mise en œuvre du procédé

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Publication Number Publication Date
EP3294941A1 EP3294941A1 (fr) 2018-03-21
EP3294941B1 true EP3294941B1 (fr) 2019-06-12

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EP (1) EP3294941B1 (fr)
CN (1) CN107636224B (fr)
DE (1) DE102015208648A1 (fr)
WO (1) WO2016180608A1 (fr)

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DE102016225609A1 (de) 2016-12-20 2018-06-21 BSH Hausgeräte GmbH Waschtrockner und System zur Reinigung und Trocknung von Wäsche sowie Verfahren zu deren Betrieb
DE102017223002A1 (de) * 2017-12-18 2019-06-19 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit Messvorrichtung zur Bestimmung einer Beladungsmenge sowie Verfahren
CN111826887B (zh) * 2019-03-29 2022-09-23 青岛海尔洗衣机有限公司 一种洗衣机的控制方法及洗衣机
CN112227021B (zh) * 2019-06-27 2023-05-23 青岛海尔智能技术研发有限公司 洗衣机、用于控制洗衣机的方法及装置
CN112575537B (zh) * 2019-09-27 2024-06-14 青岛海尔洗衣机有限公司 一种壁挂洗衣机及具有减震功能的壁挂结构
JP7442126B2 (ja) * 2019-12-10 2024-03-04 青島海爾洗衣机有限公司 ドラム式洗濯機
CN112522906B (zh) * 2020-11-27 2021-12-03 珠海格力电器股份有限公司 一种滚筒式衣物处理装置的偏心值检测方法及装置
CN113957659B (zh) * 2021-12-07 2023-04-07 四川虹美智能科技有限公司 一种滚筒洗衣机的称重方法、装置和滚筒洗衣机
CN119777111B (zh) * 2025-01-02 2025-11-21 Tcl家用电器（合肥）有限公司 洗衣机的控制方法、控制装置、洗衣机和存储介质

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ITTO20050623A1 (it) * 2005-09-14 2007-03-15 Indesit Co Spa Elettrodomestico per il trattamento di capi tessili con sensore di spostamento
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ITTO20070943A1 (it) * 2007-12-27 2009-06-28 Indesit Co Spa Metodo per stimare il peso del contenuto di un elettrodomestico
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DE102009028772A1 (de) * 2009-08-21 2011-02-24 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Hausgerät mit einem Dämpfer
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EP3294941A1 (fr) 2018-03-21
CN107636224B (zh) 2019-12-20
WO2016180608A1 (fr) 2016-11-17
CN107636224A (zh) 2018-01-26
DE102015208648A1 (de) 2016-11-17

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