EP1712670B1 - Optimizing process for a cycle of a washing machine and a washing machine therefor - Google Patents
Optimizing process for a cycle of a washing machine and a washing machine therefor Download PDFInfo
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- EP1712670B1 EP1712670B1 EP06112295.8A EP06112295A EP1712670B1 EP 1712670 B1 EP1712670 B1 EP 1712670B1 EP 06112295 A EP06112295 A EP 06112295A EP 1712670 B1 EP1712670 B1 EP 1712670B1
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- laundry
- washing
- drum
- washing machine
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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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
Definitions
- the invention relates to washing machines, and more particularly the machines for domestic use.
- the laundry is subjected to a strong mechanical action throughout the wash cycle.
- the drum containing the laundry is rotated frequently to ensure proper washing performance.
- This conclusion is related to the high ratio of the rotation time of the drum to the total time of the washing cycle of the synthetic program.
- This report will be called the rate of march in the rest of the present document.
- the Applicant has measured the rate of operation of the synthetic program whose value is of the order of 75% on a traditional washing machine.
- the so-called "delicate" washing programs make it possible to preserve the elastic properties of the materials used for textiles made of stretch. On the other hand, said programs do not make it possible to obtain a compliant washing performance.
- the tests carried out by the Applicant could highlight a degradation of the washing performance of at least 9% of the delicate program compared to the synthetic program according to EN 60456. This conclusion is related to the low ratio of the rotation time of the drum to the total time of the wash cycle of the delicate program.
- the Claimant has measured the market rate of the delicate program whose value is 67%.
- the duration of the delicate program is shorter than that of the synthetic program.
- the Claimant measured the average duration of a delicate program and a synthetic program. The result of this analysis tells us that the duration of a wash cycle for a delicate program is 40 minutes and for a synthetic program of 82 minutes.
- the process of the document US2003 / 089139557 A1 comprises the steps of: rotating the drum at a first rotational speed sufficient to retain the wash load in a stationary state relative to the drum; introducing the rinsing water into the interior of the drum through the inlet; the volume of the rinsing water introduced during the step of introducing the rinsing water is less than the volume required to saturate the wash load, so that virtually all the rinsing water is absorbed in the wash load; the step of introducing the rinsing water is followed by a step of increasing the speed of rotation of the drum at a second speed sufficient to spin out a significant proportion of the rinsing water of the load washing.
- this method of controlling the drive of a drum has the disadvantage of not being adapted to respect the elastic properties of textiles composed of stretch materials.
- the invention proposes to implement a washing process by optimizing the parameters of temperature, water quantity, rate of operation, rotation speeds of the drum, accelerations of the drum to obtain a product to wash according to the expectations of the user.
- the subject of the invention is a method of washing laundry in a washing machine comprising a tank filled with liquid from a water inlet, a rotary drum for loading laundry, means for washing laundry. ordering a laundry program.
- the method according to the invention makes it possible to wash laundry composed of stretch materials according to parameters associated with said cycle washing phase and to spin the laundry according to a spin profile and a spin speed. rotation of the drum limited.
- the washing program comprising this succession of steps makes it possible to improve the washing performance, and thus to preserve the elastic properties.
- This succession of steps makes it possible to maintain the initial shape of the clothes.
- an additional cooling step of the washing bath is placed at the end of the washing phase.
- This step of cooling the washing bath at the end of the washing phase makes it possible to cool the textile fibers gently in order to avoid a strong deformation during the spinning step following said washing phase. It also makes it possible to avoid a thermal shock for the fibers of the textile during the filling of the tank of the rinsing phase.
- the rotation speed V 2 of the drum is less than 600 rpm during the intermediate spinning phase.
- This final spinning step avoids the deformation of the elastic fibers by limiting the speed V 3 of rotation of the drum at 800 revolutions per minute.
- the maximum temperature T max is 40 ° C during the washing phase.
- the temperature during the washing phase is limited to avoid degradation of the elastic fiber sensitive to temperature.
- the present invention also aims, according to a second aspect, to provide a washing machine equipped with a tank filled with liquid from a water intake, a rotary drum for loading the laundry and control means of a laundry program implementing the washing method.
- the invention will be described in the context of a top-loading washing machine 1, but may equally well be applied in the case of a front-loading washing machine 1 where the same type of problem is encountered .
- a household appliance 1 such as a washing machine, schematized in figure 1 , comprises a body 2, a tank 3 filled with liquid from a water intake, in which is mounted a rotating drum 4 for loading laundry, control means of a laundry program 5 and a water level regulator (not shown).
- This water regulating device may be, in a known manner, constituted by an air pressure switch, the bell-shaped compression chamber of which is disposed in the tank 3 of the appliance 1.
- the diaphragm of the pressure switch which moves under the effect of pressure variations relative to delicate and synthetic for the same washing phase is 11 liters. This increase in the water level does not allow to ensure the linen cushioning movement in the drum 4 and to prevent the pieces of laundry rub directly between them and against the drum 4.
- the abrasion effect between pieces of laundry is reduced during the brewing phases.
- the effect of the mechanical stress on the fallout of the clothes in the drum 4 during said brewing phases is avoided.
- the mechanical action corresponds to the phases of the washing cycle where the drum 4 drives the rotating laundry and makes it fall from the top of the drum 4 by churns thereby causing movement to the textile pieces. Therefore, the washing performance is better without degrading the elastic properties of the textile.
- the level of water needed in the drum 4 to ensure washing performance without degradation of the elastic properties of the textile fibers can range from 80 to 120 mm.
- the water level N e in the drum 4 is 100 mm.
- washing performance was measured by the Applicant in comparative tests between the delicate program and the textile-specific program composed of elastic material.
- the washing performance measurement is 222 points for the delicate program and 246 points for the textile-specific program made of elastic material according to EN 60456.
- the washing performance improvement is of the order of 10%.
- the washing liquid filling triggers the high level of the pressure switch. Then, a complementary filling during a determined period adapted to each filling phase is performed.
- the additional filling time is a function of the flow rate of the solenoid valve disposed on the hydraulic circuit. In the embodiment described, the flow rate of the solenoid valve is 8 liters per minute.
- Said complementary filling carried out during the washing step makes it possible to reach a water level Ne in the drum 4 of at least 80 mm.
- the temperature T max during the washing phase is limited to 40 ° C to prevent degradation of the elastic fiber sensitive to temperature.
- the speed of rotation of the drum 4 is less than a threshold V 1 during the washing step.
- This threshold V 1 is limited to 50 revolutions per minute.
- the number of rinses is two in number.
- the number of intermediate squeezes is two in number.
- the gradual ramp of the increase in speed of rotation of the drum 4 during the intermediate spinning phases is defined by an acceleration of between 10 and 20 revolutions per minute per second over a duration of the order of 30 to 50 seconds, and preferentially of the order of 37 seconds.
- the gradual ramp of the increase in speed of rotation of the drum 4 takes place over a range of the order of 480 revolutions per minute.
- the increase in rotational speed of the drum 4 is of the order of 11 revolutions per minute per second between 100 revolutions per minute and 600 revolutions per minute.
- This spin profile is illustrated on the figure 2 with the abscissa time t in seconds and the ordinate speed V rotation of the drum 4 in revolutions per minute.
- the progressivity of the rise ramp in rotation speed of the drum 4 prevents creasing of the laundry.
- the laundry is orbitalized on the inner peripheral wall of the drum 4 with flexibility.
- these intermediate spinning phases avoid wrinkling.
- the progressivity of the ramp for increasing the rotational speed of the drum 4 makes it possible to avoid vibrations of the suspended assembly comprising the drum 4 and the washing tub 3 as well as the bodywork 2.
- rotation speed of the drum 4 makes it possible to pass the transient regimes by limiting the vibrations, where the suspended assembly generally has a tendency to cause a large amplitude of vibrations.
- Transient regimes are typically between 100 and 200 rpm.
- the suspended assembly moves little inside the body 2.
- the body 2 is little vibration. Therefore, the user is not hindered by the noise caused by the machine during said intermediate spinning steps.
- the intermediate spinning stage also comprises two other phases corresponding to two peaks of rise in rotation speed of the drum at values of 250 revolutions per minute and 450 revolutions per minute for a duration of the order of 7 seconds for each said peaks.
- the rotational speed of the drum 4 is less than a threshold V 3 .
- the threshold V 3 is limited to 800 revolutions per minute to avoid deformation of the elastic fibers composing the textile.
- This method has the advantage of allowing a higher rotation speed than that of a delicate program during the final spinning step.
- the maximum speed V 3 allowed during a final spin for the delicate program is 500 revolutions per minute.
- This embodiment makes it possible to obtain a running rate of the order of 72% for a duration of 86 minutes.
- an additional cooling step of the washing bath is placed at the end of the washing step.
- the method of washing laundry in a washing machine described in the present invention can improve the washing performance and especially reduce the wear of laundry whose fibers have elastic properties.
- a measurement of conductivity in the tank makes it possible to follow in real time the evolution of the elimination of the detergent and the dirt present in the washing water of the washing machine 1.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
La présente invention concerne d'une part un procédé de lavage du linge dans une machine à laver de manière à conserver les propriétés élastiques et la forme initiale des vêtements, et d'autre part, une machine adaptée à mettre en oeuvre le procédé de lavage conforme à l'invention.The present invention relates on the one hand to a method of washing the laundry in a washing machine so as to retain the elastic properties and the initial shape of the clothes, and on the other hand, a machine adapted to implement the washing method according to the invention.
De manière générale, l'invention concerne les machines à laver le linge, et plus particulièrement les machines à usage domestique.In general, the invention relates to washing machines, and more particularly the machines for domestic use.
Actuellement, les programmes disponibles sur les machines à laver le linge actuelles et utilisés pour des textiles composés de matières stretch ne sont pas adaptés pour respecter les propriétés élastiques des matériaux employés pour ce type de vêtements ou encore lesdits programmes ne permettent pas d'obtenir une performance de lavage conforme. Les matières stretch employées pour la confection de vêtements sont notamment composées de fils d'élasthanne. L'utilisateur n'a pas la possibilité de laver ces vêtements ayant ces propriétés élastiques avec d'autres programmes de lavage. Ces programmes de lavage peuvent être appelés cycle « synthétique » et cycle « délicat ».Currently, the programs available on current washing machines and used for textiles composed of stretch materials are not adapted to respect the elastic properties of the materials used for this type of clothing or said programs do not provide a washing performance compliant. Stretch materials used in the manufacture of clothing include elastane yarns. The user does not have the possibility to wash these clothes having these elastic properties with other washing programs. These washing programs can be called "synthetic" cycle and "delicate" cycle.
Les programmes de lavage dits « synthétique » ne respectent pas l'élasticité des matériaux de ce type de vêtements. Ceci est lié à l'action mécanique appliquée en lavage. Cette action mécanique correspond à un profil d'essorage intermédiaire et un profil d'essorage final contraignants pour les fibres des vêtements. Le profil d'essorage intermédiaire est contraignant pour deux raisons principales :
- la vitesse d'essorage suit une rampe forte, par exemple la vitesse évolue de 0 et 800 tr/min sur une période de 15 secondes,
- ensuite, le profil d'essorage comprend un palier où la vitesse d'essorage est maintenue à un seuil élevé de l'ordre de 800 tr/min.
- the spin speed follows a strong ramp, for example the speed changes from 0 to 800 rpm over a period of 15 seconds,
- then, the spin profile comprises a bearing where the spin speed is maintained at a high threshold of the order of 800 rpm.
Le profil d'essorage final est contraignant à cause de la vitesse maximum de rotation du tambour avoisinant 1000 tours par minute.The final spin profile is restrictive because of the maximum speed of rotation of the drum close to 1000 revolutions per minute.
En outre, le linge est soumis à une action mécanique forte tout au long du cycle de lavage. Le tambour contenant le linge est en rotation fréquemment pour assurer une performance de lavage correcte. Cette conclusion est liée au fort rapport du temps de rotation du tambour sur le temps total du cycle de lavage du programme synthétique. Ce rapport sera appelé taux de marche dans la suite du document présent. Pour illustrer ce constat, la Demanderesse a mesuré le taux de marche du programme synthétique dont la valeur est de l'ordre de 75% sur une machine à laver le linge traditionnelle.In addition, the laundry is subjected to a strong mechanical action throughout the wash cycle. The drum containing the laundry is rotated frequently to ensure proper washing performance. This conclusion is related to the high ratio of the rotation time of the drum to the total time of the washing cycle of the synthetic program. This report will be called the rate of march in the rest of the present document. To illustrate this, the Applicant has measured the rate of operation of the synthetic program whose value is of the order of 75% on a traditional washing machine.
Les programmes de lavage dits « délicat » permettent de conserver les propriétés élastiques des matériaux utilisés pour les textiles composés de stretch. En revanche, lesdits programmes ne permettent pas d'obtenir une performance de lavage conforme. Les essais menés par la Demanderesse ont pu mettre en évidence une dégradation de la performance de lavage d'au moins 9% du programme délicat par rapport au programme synthétique suivant la norme EN 60456. Cette conclusion est liée au faible rapport du temps de rotation du tambour sur le temps total du cycle de lavage du programme délicat. Pour illustrer ce constat, la Demanderesse a mesuré le taux de marche du programme délicat dont la valeur est de 67%. En outre, la durée du programme délicat est plus courte que celle du programme synthétique. Pour illustrer ce constat, la Demanderesse a mesuré la durée moyenne d'un programme délicat et d'un programme synthétique. Le résultat de cette analyse nous apprend que la durée d'un cycle de lavage pour un programme délicat est de 40 minutes et pour un programme synthétique de 82 minutes.The so-called "delicate" washing programs make it possible to preserve the elastic properties of the materials used for textiles made of stretch. On the other hand, said programs do not make it possible to obtain a compliant washing performance. The tests carried out by the Applicant could highlight a degradation of the washing performance of at least 9% of the delicate program compared to the synthetic program according to EN 60456. This conclusion is related to the low ratio of the rotation time of the drum to the total time of the wash cycle of the delicate program. To illustrate this, the Claimant has measured the market rate of the delicate program whose value is 67%. In addition, the duration of the delicate program is shorter than that of the synthetic program. To illustrate this, the Claimant measured the average duration of a delicate program and a synthetic program. The result of this analysis tells us that the duration of a wash cycle for a delicate program is 40 minutes and for a synthetic program of 82 minutes.
On connaît également le document
Le procédé du document
Cependant, ce procédé de rinçage présente l'inconvénient de ne pas être adapté pour respecter les propriétés élastiques des textiles composés de matières stretch.However, this rinsing process has the disadvantage of not being adapted to respect the elastic properties of textiles composed of stretch materials.
On connaît également le document
Cependant, ce procédé de contrôle de l'entraînement d'un tambour présente l'inconvénient de ne pas être adapté pour respecter les propriétés élastiques des textiles composés de matières stretch.However, this method of controlling the drive of a drum has the disadvantage of not being adapted to respect the elastic properties of textiles composed of stretch materials.
Les procédés actuels de programmation du cycle de lavage sont basés sur le lavage de matériaux traditionnels de type coton, polyester et laine par exemple. Ces matériaux traditionnels sont tels que le coton, la laine ou le synthétique utilisant des programmes appelés synthétiques ou délicats, mais pour résoudre le problème précité ces programmes de lavage ne sont pas adaptés car les matériaux des nouveaux vêtements contiennent des fibres élastiques.Current methods of programming the wash cycle are based on the washing of traditional materials such as cotton, polyester and wool, for example. These traditional materials are such as cotton, wool or synthetic using programs called synthetic or delicate, but to solve the aforementioned problem these washing programs are not suitable because the materials of the new clothes contain elastic fibers.
C'est pourquoi l'invention propose de mettre en oeuvre un procédé de lavage en optimisant les paramètres de température, de quantité d'eau, de taux de marche, des vitesses de rotation du tambour, des accélérations du tambour pour obtenir un produit à laver conforme aux attentes de l'utilisateur.This is why the invention proposes to implement a washing process by optimizing the parameters of temperature, water quantity, rate of operation, rotation speeds of the drum, accelerations of the drum to obtain a product to wash according to the expectations of the user.
L'intérêt d'adapter les paramètres du programme de lavage en fonction du type de linge chargé dans le tambour de la machine à laver le linge permet d'optimiser les consommations énergétiques en eau et en électricité.The advantage of adapting the parameters of the washing program according to the type of laundry loaded in the drum of the washing machine makes it possible to optimize energy consumption in water and electricity.
Plus précisément, l'invention a pour objet un procédé de lavage du linge dans une machine à laver le linge comprenant une cuve remplie en liquide à partir d'une prise d'arrivée en eau, un tambour rotatif de chargement du linge, des moyens de commande d'un programme de lavage du linge.More specifically, the subject of the invention is a method of washing laundry in a washing machine comprising a tank filled with liquid from a water inlet, a rotary drum for loading laundry, means for washing laundry. ordering a laundry program.
Ce procédé comprend les étapes suivantes exécutées en continu et dans l'ordre mentionné :
- une phase de lavage ayant une température de lavage inférieure ou égale à un seuil Tmax de 40°C, une vitesse de rotation du tambour inférieure à un seuil V1 de 50 tours par minute et un niveau d'eau Ne où les pièces de linge étant immergées dans le bain lessiviel ;
- où le niveau Ne dans le tambour s'étend dans une plage entre 80 et 120mm ;
- au moins une phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour suivant une rampe progressive et la vitesse de rotation est inférieure à un seuil V2 de 600 tours par minute ;
- au moins une phase de rinçage ;
- au moins une phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour suivant une rampe progressive et la vitesse de rotation est inférieure à un seuil V2 de 600 tours par minute ; et
- une phase d'essorage final ayant une vitesse de rotation du tambour inférieure à un seuil V3 de 800 tours par minute.
- a washing phase having a washing temperature lower than or equal to a threshold T max of 40 ° C, a rotation speed of the drum lower than a threshold V 1 of 50 revolutions per minute and a water level Ne where the pieces of linen being immersed in the detergent bath;
- where the level Ne in the drum extends in a range between 80 and 120mm;
- at least one intermediate spinning stage comprising a rise in rotation speed of the drum in a progressive ramp and the speed of rotation is less than a threshold V 2 of 600 revolutions per minute;
- at least one rinsing phase;
- at least one intermediate spinning stage comprising a rise in rotation speed of the drum in a progressive ramp and the speed of rotation is less than a threshold V 2 of 600 revolutions per minute; and
- a final spin phase having a rotation speed of the drum less than a threshold V 3 of 800 revolutions per minute.
Compte tenu des caractéristiques ci-dessus, le procédé selon l'invention permet de laver du linge composé de matières stretch suivant des paramètres associés à ladite phase de lavage du cycle et d'essorer le linge suivant un profil d'essorage et une vitesse de rotation du tambour limitée.In view of the above characteristics, the method according to the invention makes it possible to wash laundry composed of stretch materials according to parameters associated with said cycle washing phase and to spin the laundry according to a spin profile and a spin speed. rotation of the drum limited.
Le programme de lavage comprenant cette succession d'étapes permet d'améliorer la performance de lavage, et ainsi de conserver les propriétés élastiques. Cette succession d'étapes permet de maintenir la forme initiale des vêtements.The washing program comprising this succession of steps makes it possible to improve the washing performance, and thus to preserve the elastic properties. This succession of steps makes it possible to maintain the initial shape of the clothes.
Selon une variante de l'invention, une étape supplémentaire de refroidissement du bain de lavage est placée à la fin de la phase de lavage.According to a variant of the invention, an additional cooling step of the washing bath is placed at the end of the washing phase.
Cette étape de refroidissement du bain de lavage à la fin de la phase de lavage permet de refroidir doucement les fibres de textile pour éviter une forte déformation au cours de l'essorage suivant ladite phase de lavage. Elle permet également d'éviter un choc thermique pour les fibres du textile lors du remplissage de la cuve de la phase de rinçage.This step of cooling the washing bath at the end of the washing phase makes it possible to cool the textile fibers gently in order to avoid a strong deformation during the spinning step following said washing phase. It also makes it possible to avoid a thermal shock for the fibers of the textile during the filling of the tank of the rinsing phase.
La vitesse V2 de rotation du tambour est inférieure à 600 tours par minute lors de la phase d'essorage intermédiaire.The rotation speed V 2 of the drum is less than 600 rpm during the intermediate spinning phase.
Cette étape d'essorage intermédiaire permet d'assurer une bonne extraction de l'eau contenue dans les fibres du textile tout en les protégeant.This intermediate spinning step ensures a good extraction of the water contained in the textile fibers while protecting them.
La vitesse V3 de rotation du tambour est inférieure à 800 tours par minute lors de la phase d'essorage final.The speed V 3 of rotation of the drum is less than 800 revolutions per minute during the final spinning phase.
Cette étape d'essorage final permet d'éviter la déformation des fibres élastiques en limitant la vitesse V3 de rotation du tambour à 800 tours par minute.This final spinning step avoids the deformation of the elastic fibers by limiting the speed V 3 of rotation of the drum at 800 revolutions per minute.
La température maximum Tmax est de 40°C lors de la phase de lavage.The maximum temperature T max is 40 ° C during the washing phase.
La température lors de la phase de lavage est limitée pour éviter une dégradation de la fibre élastique sensible à la température.The temperature during the washing phase is limited to avoid degradation of the elastic fiber sensitive to temperature.
La présente invention vise également selon un second aspect à fournir une machine à laver équipée d'une cuve remplie en liquide à partir d'une prise d'arrivée en eau, d'un tambour rotatif de chargement du linge et de moyens de commande d'un programme de lavage du linge mettant en oeuvre le procédé de lavage.The present invention also aims, according to a second aspect, to provide a washing machine equipped with a tank filled with liquid from a water intake, a rotary drum for loading the laundry and control means of a laundry program implementing the washing method.
L'invention sera mieux comprise et d'autres avantages apparaîtront plus clairement à la lecture de la description qui va suivre donnée à titre non limitatif, faite en référence aux figures annexées, sur lesquelles :
- la
figure 1 représente une vue schématique et partielle d'un lave-linge ; - la
figure 2 illustre un profil d'essorage intermédiaire d'un lave-linge conforme à un mode de réalisation de l'invention.
- the
figure 1 is a schematic and partial view of a washing machine; - the
figure 2 illustrates an intermediate spinning profile of a washing machine according to one embodiment of the invention.
L'invention va être décrite dans le cadre d'un lave-linge 1 à chargement par le dessus, mais peut tout aussi bien être appliquée dans le cas d'un lave-linge 1 à chargement frontal où le même type de problème est rencontré.The invention will be described in the context of a top-
De manière générale un appareil électroménager 1 tel qu'un lave-linge, schématisé en
L'augmentation du niveau d'eau Ne permet d'avoir une action mécanique plus élevée par rapport à un programme délicat traditionnel. L'action mécanique correspond aux phases du cycle de lavage où le tambour 4 entraîne le linge en rotation et le fait tomber du haut du tambour 4 par des barattes en provoquant ainsi un mouvement aux pièces de textile. Par conséquent, les performances de lavage sont meilleures sans dégrader les propriétés élastiques du textile.Increasing the water level does not allow for a higher mechanical action compared to a traditional delicate program. The mechanical action corresponds to the phases of the washing cycle where the
Le niveau d'eau Ne nécessaire dans le tambour 4 pour assurer une performance de lavage sans dégradation des propriétés élastiques des fibres du textile peut s'étendre dans une plage entre 80 et 120mm. Préférentiellement, le niveau d'eau Ne dans le tambour 4 est de 100mm.The level of water needed in the
Cette amélioration de performance de lavage a été mesurée par la Demanderesse lors d'essais comparatifs entre le programme délicat et le programme spécifique au textile composé de matière élastique. La mesure de performance de lavage est de 222 points pour le programme délicat et de 246 points pour le programme spécifique au textile composé de matière élastique suivant la norme EN 60456. Plus la note de performance de lavage est élevée plus la performance est bonne. L'amélioration de performance de lavage est de l'ordre de 10%.This improvement in washing performance was measured by the Applicant in comparative tests between the delicate program and the textile-specific program composed of elastic material. The washing performance measurement is 222 points for the delicate program and 246 points for the textile-specific program made of elastic material according to EN 60456. The higher the washing performance rating, the better the performance. The washing performance improvement is of the order of 10%.
Afin d'obtenir la quantité d'eau nécessaire lors de l'étape de lavage du linge, le remplissage de liquide de lavage déclenche le niveau haut du pressostat. Puis, un remplissage complémentaire pendant une durée déterminée adapté à chaque phase de remplissage est effectué. La durée de remplissage complémentaire est fonction du débit de l'électrovanne disposée sur le circuit hydraulique. Dans le mode de réalisation décrit, le débit de l'électrovanne est de 8 litres par minute.In order to obtain the quantity of water required during the washing step, the washing liquid filling triggers the high level of the pressure switch. Then, a complementary filling during a determined period adapted to each filling phase is performed. The additional filling time is a function of the flow rate of the solenoid valve disposed on the hydraulic circuit. In the embodiment described, the flow rate of the solenoid valve is 8 liters per minute.
Ledit remplissage complémentaire réalisé pendant l'étape de lavage permet d'atteindre un niveau d'eau Ne dans le tambour 4 d'au moins 80mm.Said complementary filling carried out during the washing step makes it possible to reach a water level Ne in the
La température Tmax lors de la phase de lavage est limitée à 40°C pour éviter une dégradation de la fibre élastique sensible à la température.The temperature T max during the washing phase is limited to 40 ° C to prevent degradation of the elastic fiber sensitive to temperature.
D'autre part, la vitesse de rotation du tambour 4 est inférieure à un seuil V1 lors de l'étape de lavage. Ce seuil V1 est limité à 50 tours par minute.On the other hand, the speed of rotation of the
Après l'étape de lavage, le programme de lavage dédié au textile composé de fibres à propriétés élastiques comprend au moins une phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour 4 suivant une rampe progressive et la vitesse de rotation est inférieure à un seuil V2, puis au moins une étape de rinçage.After the washing step, the textile washing program composed of fibers with elastic properties comprises at least one intermediate spinning phase. comprising a rise in rotation speed of the
Le nombre de rinçages est au nombre de deux.The number of rinses is two in number.
Selon une autre caractéristique, au moins une autre phase d'essorage intermédiaire comporte une montée en vitesse de rotation du tambour 4 suivant une rampe progressive et la vitesse de rotation est inférieure à un seuil V2. Le seuil V2 est limité à 600 tours par minute.According to another characteristic, at least one other intermediate spinning phase comprises a rise in rotation speed of the
Le nombre d'essorages intermédiaires est au nombre de deux.The number of intermediate squeezes is two in number.
La rampe progressive de la montée en vitesse de rotation du tambour 4 lors des phases d'essorage intermédiaires est définie par une accélération comprise entre 10 et 20 tours par minute par seconde sur une durée de l'ordre de 30 à 50 secondes, et préférentiellement de l'ordre de 37 secondes. La rampe progressive de la montée en vitesse de rotation du tambour 4 s'effectue sur une plage de l'ordre de 480 tours par minutes.The gradual ramp of the increase in speed of rotation of the
Préférentiellement, la montée en vitesse de rotation du tambour 4 est de l'ordre de 11 tours par minute par seconde entre 100 tours par minute et 600 tours par minute. Ce profil d'essorage est illustré sur la
La progressivité de la rampe de montée en vitesse de rotation du tambour 4 permet d'éviter le froissage du linge. Au cours desdites phases d'essorage intermédiaires, le linge est satellisé sur la paroi périphérique intérieure du tambour 4 avec souplesse. Ainsi, ces phases d'essorage intermédiaires évitent le froissage.The progressivity of the rise ramp in rotation speed of the
En outre, la progressivité de la rampe de montée en vitesse de rotation du tambour 4 permet d'éviter des vibrations de l'ensemble suspendu comprenant le tambour 4 et la cuve de lavage 3 ainsi que de la carrosserie 2. Cette rampe de montée en vitesse de rotation du tambour 4 permet de passer les régimes transitoires en limitant les vibrations, où l'ensemble suspendu a généralement une tendance à provoquer une forte amplitude de vibrations. Les régimes transitoires sont généralement entre 100 et 200 tours par minute. Ainsi, l'ensemble suspendu se déplace peu à l'intérieur de la carrosserie 2. Et la carrosserie 2 est peu mise en vibrations. Par conséquent, l'utilisateur n'est pas gêné par le bruit provoqué par la machine lors desdites étapes d'essorage intermédiaires.In addition, the progressivity of the ramp for increasing the rotational speed of the
Par ailleurs, la progressivité de la rampe de montée en vitesse de rotation du tambour 4 permet de protéger efficacement les textiles composés de matière stretch contre l'usure liée au frottement avec ledit tambour 4. Au cours desdites phases d'essorage intermédiaires, le linge est plaqué contre la paroi périphérique intérieure du tambour 4 sans mouvement l'un par rapport à l'autre. Le linge est entraîné en rotation avec le tambour 4 par au moins un moyen d'entraînement du linge disposé sur la paroi périphérique intérieure du tambour 4. Ce moyen d'entraînement du linge est communément appelé baratte ou oméga.Moreover, the progressivity of the rise ramp in rotation speed of the
L'étape d'essorage intermédiaire comprend aussi deux autres phases correspondant à deux pics de montées en vitesse de rotation du tambour à des valeurs de 250 tours par minute et de 450 tours par minute sur une durée de l'ordre de 7 secondes pour chacun desdits pics.The intermediate spinning stage also comprises two other phases corresponding to two peaks of rise in rotation speed of the drum at values of 250 revolutions per minute and 450 revolutions per minute for a duration of the order of 7 seconds for each said peaks.
Selon le procédé de l'invention mis en oeuvre, lors de la phase d'essorage final, la vitesse de rotation du tambour 4 est inférieure à un seuil V3. Le seuil V3 est limité à 800 tours par minute pour éviter la déformation des fibres élastiques composant le textile.According to the method of the invention used, during the final spinning phase, the rotational speed of the
L'étape d'essorage final comprend trois grandes phases décrites ci-dessous :
- un premier pic correspondant à une montée en vitesse de rotation du tambour à 450 tours par minute pendant une durée courte de l'ordre de 3 secondes,
- un deuxième pic correspondant à une montée en vitesse de rotation du tambour à 600 tours par minute pendant une durée courte de l'ordre de 6 secondes, et
- un palier à une vitesse de rotation à 800 tours par minute pendant une durée de l'ordre de 40 secondes.
- a first peak corresponding to a rise in rotation speed of the drum at 450 revolutions per minute for a short duration of the order of 3 seconds,
- a second peak corresponding to a rise in rotation speed of the drum at 600 revolutions per minute for a short duration of the order of 6 seconds, and
- a bearing at a speed of rotation at 800 rpm for a duration of the order of 40 seconds.
Ce procédé a l'avantage de permettre une vitesse de rotation supérieure à celle d'un programme délicat pendant l'étape d'essorage final. La vitesse V3 maximum autorisée lors d'un essorage final pour le programme délicat est de 500 tours par minute.This method has the advantage of allowing a higher rotation speed than that of a delicate program during the final spinning step. The maximum speed V 3 allowed during a final spin for the delicate program is 500 revolutions per minute.
Ce mode de réalisation permet d'obtenir un taux de marche de l'ordre de 72% pour une durée de 86 minutes.This embodiment makes it possible to obtain a running rate of the order of 72% for a duration of 86 minutes.
Préférentiellement, une étape supplémentaire de refroidissement du bain de lavage est placée à la fin de l'étape de lavage.Preferably, an additional cooling step of the washing bath is placed at the end of the washing step.
Cette étape supplémentaire permet de refroidir le linge pour limiter le froissage des textiles. Cette étape permet aussi de refroidir doucement les fibres de textile pour éviter une forte déformation au cours de l'essorage suivant cette étape, ainsi que d'éviter des chocs thermiques lors du remplissage suivant de la cuve de l'étape de rinçage.This extra step is used to cool the laundry to limit wrinkling of textiles. This step also allows the textile fibers to be cooled slowly to avoid a strong deformation during spinning in this step, as well as to avoid thermal shocks during the subsequent filling of the tank of the rinsing step.
Le procédé de lavage du linge dans une machine à laver le linge décrit dans la présente invention permet d'améliorer la performance de lavage et surtout de diminuer l'usure du linge dont les fibres ont des propriétés élastiques.The method of washing laundry in a washing machine described in the present invention can improve the washing performance and especially reduce the wear of laundry whose fibers have elastic properties.
Une mesure de conductivité dans la cuve permet de suivre en temps réel l'évolution de l'élimination de la lessive et des saletés présentes dans l'eau de lavage de la machine à laver 1.A measurement of conductivity in the tank makes it possible to follow in real time the evolution of the elimination of the detergent and the dirt present in the washing water of the
Bien entendu, la présente invention n'est nullement limitée aux modes de réalisation décrits et représentés, mais englobe, bien au contraire, toute variante à portée de l'homme du métier et entre autre, l'utilisation d'un tel procédé dans tout appareil de lavage.Of course, the present invention is not limited to the modes of embodiment described and shown, but encompasses, on the contrary, any variant within the reach of the skilled person and among others, the use of such a method in any washing machine.
Claims (8)
- A method for washing laundry composed of stretch material in a laundry washing machine comprising a tank (3) filled with liquid from a water inlet, a rotating drum (4) to load the laundry into, means for controlling a laundry-washing program (5), characterized in that it comprises the following steps executed continuously and in the order mentioned:- a phase of washing that has a washing temperature less than or equal to a threshold (Tmax) of 40°C, a rotational speed of the drum (4) less than a threshold (V1) of 50 revolutions per minute, and a water level (Ne) where the laundry items are immersed in the detergent bath;- wherein the level (Ne) in the drum (4) is in a range between 80 and 120 mm;- at least one intermediate spin phase comprising an increase in the rotational speed of the drum (4) that gradually ramps up, wherein the rotational speed is less than a threshold (V2) of 600 revolutions per minute;- at least one rinsing phase;- at least one intermediate spin phase comprising an increase in the rotational speed of the drum (4) that gradually ramps up, wherein the rotational speed is less than a threshold (V2) of 600 revolutions per minute; and- a final spin phase that has a rotational speed of the drum (4) less than a threshold (V3) of 800 revolutions per minute.
- A method for washing laundry in a laundry washing machine according to claim 1, characterized in that the level (Ne) in the drum (4) is 100 mm.
- A method for washing laundry in a laundry washing machine according to claim 1 or 2, characterized in that the gradual ramp-up of the increase in the rotational speed of the drum (4) during the intermediate spin phases is defined by an acceleration comprised between 10 and 20 revolutions per minute per second over a duration of 30 to 50 seconds.
- A method for washing laundry in a laundry-washing machine according to claim 3, characterized in that the increase in the rotational speed of the drum (4) is on the order of 11 revolutions per minute per second between 100 revolutions per minute and 600 revolutions per minute.
- A method for washing laundry in a laundry-washing machine according to any one of the preceding claims, characterized in that an additional step of cooling the wash bath is placed at the end of the washing phase.
- A method for washing laundry in a laundry-washing machine according to any one of the preceding claims, characterized in that the number of rinses is two.
- A method for washing laundry in a laundry-washing machine according to any one of the preceding claims, characterized in that the number of intermediate spins is two.
- A method for washing laundry in a laundry-washing machine according to any one of the preceding claims, characterized in that the final spin step comprises three main phases in which at least two of said phases is short in duration.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0503655A FR2884263B1 (en) | 2005-04-11 | 2005-04-11 | METHOD OF OPTIMIZING THE OPERATING CYCLE OF A WASHING MACHINE AND A WASHING MACHINE USING THE SAME |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1712670A1 EP1712670A1 (en) | 2006-10-18 |
EP1712670B1 true EP1712670B1 (en) | 2016-09-07 |
Family
ID=35457005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06112295.8A Active EP1712670B1 (en) | 2005-04-11 | 2006-04-06 | Optimizing process for a cycle of a washing machine and a washing machine therefor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1712670B1 (en) |
ES (1) | ES2602729T3 (en) |
FR (1) | FR2884263B1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB357405A (en) * | 1930-10-31 | 1931-09-24 | Robert Powley & Sons Ltd | Improvements in and relating to machines for washing bottles and the like |
GB0003008D0 (en) * | 2000-02-11 | 2000-03-29 | Notetry Ltd | A method of operating a domestic appliance |
KR100480133B1 (en) * | 2003-01-16 | 2005-04-07 | 엘지전자 주식회사 | Drum type washing machine and drive control method thereof |
-
2005
- 2005-04-11 FR FR0503655A patent/FR2884263B1/en not_active Expired - Fee Related
-
2006
- 2006-04-06 ES ES06112295.8T patent/ES2602729T3/en active Active
- 2006-04-06 EP EP06112295.8A patent/EP1712670B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR2884263A1 (en) | 2006-10-13 |
FR2884263B1 (en) | 2007-06-29 |
EP1712670A1 (en) | 2006-10-18 |
ES2602729T3 (en) | 2017-02-22 |
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