EP1852537B1 - Method of optimising the operating cycle of a washing machine and washing machine using said method - Google Patents

Method of optimising the operating cycle of a washing machine and washing machine using said method Download PDF

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Publication number
EP1852537B1
EP1852537B1 EP07106359A EP07106359A EP1852537B1 EP 1852537 B1 EP1852537 B1 EP 1852537B1 EP 07106359 A EP07106359 A EP 07106359A EP 07106359 A EP07106359 A EP 07106359A EP 1852537 B1 EP1852537 B1 EP 1852537B1
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EP
European Patent Office
Prior art keywords
washing
laundry
water
drum
clothes
Prior art date
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Application number
EP07106359A
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German (de)
French (fr)
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EP1852537A2 (en
EP1852537A3 (en
Inventor
Caroline Ulmer
Carène Tissot
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FagorBrandt SAS
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FagorBrandt SAS
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Priority to PL07106359T priority Critical patent/PL1852537T3/en
Publication of EP1852537A2 publication Critical patent/EP1852537A2/en
Publication of EP1852537A3 publication Critical patent/EP1852537A3/en
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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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/10—Temperature of washing liquids; Heating means therefor
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing

Definitions

  • the present invention relates firstly to a method of washing laundry in a washing machine so as to optimize the cycle of washing lightly soiled clothes and to avoid wrinkling of these clothes, and secondly, a machine adapted to implement the washing method according to the invention.
  • the invention relates to washing machines, and more particularly to machines for domestic use (see for example the document EP-A-1087051 ).
  • the washing machines available on the market include an anti-crease or easy ironing button to limit the ironing chore. These cycles are intended to wash conventional laundry loads weighing an average of 3.5 kg.
  • the programs associated with these wash cycles are adapted accordingly and require relatively long program times and spin times.
  • the nature of the stains to be treated is also varied and requires a high mechanical action and bath temperature during washing cycles.
  • the temperature of the wash bath is generally of the order of 60 ° C.
  • washing machines including the anti-crease option proposed for conventional programs such as for example the cotton and mixed programs can not act correctly on the result of creasing clothes without degrading other performance expected on this type of program in washing and rinsing in particular.
  • 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 for washing laundry having body soiling in a washing machine comprising a tank filled with liquid from a water inlet, a rotary drum for loading the laundry, control means of a laundry program.
  • the washing process proposed is targeted at very specific items of laundry that correspond to the most restrictive pieces of linen to be ironed.
  • Said items of the most restrictive ironing are for example shirts, underwear or T-shirts. These items of laundry have two main characteristics. Clothing worn close to the body such as underwear have body soiling causing unpleasant odors. And clothes such as shirts and blouses must be easy to iron.
  • the washing process makes it possible to wash the laundry of the week by limiting as much as possible the creasing and ensuring a perfect washing of this type of clothing in a minimum of time.
  • the spinning phases can be limited in time and speed achieved because the maximum load allowed for this type of program is of the order of 2kg, and preferably 1.5kg (equivalent to about 6 shirts) and allows thus to limit the wrinkling of the pieces of linen.
  • the washing method according to the invention makes it possible to wash lightly soiled laundry, whose stains consist essentially of sebum and human secretions, according to parameters associated with the washing cycle, rinsing and drying. spinning the laundry according to specific rinsing and spinning patterns and limited drum rotation speeds.
  • the washing program comprising this succession of steps makes it possible to improve the washing performance, and thus to avoid wrinkling the fabrics.
  • This succession of steps makes it possible to reduce the cycle time of the washing program.
  • the prewash phase is systematic for the accomplishment of said washing program. Said prewash phase makes it possible to obtain a better washing performance of sebum stains and human secretions.
  • Said at least one intermediate spinning phase following the washing phase, where the bath temperature is sufficient, is adapted to limit the formation of wrinkles on the laundry items.
  • Said at least one intermediate spin phase follows a gradual increase in rotation speed of the drum and smoothly.
  • the laundry washing method comprises a step of cooling the end-of-washing bath preceding said at least a first intermediate spinning phase and said at least two rinsing phases implemented by introduction. of cold water in the drum.
  • This step makes it possible to limit the creasing of the laundry by avoiding thermal shocks between the laundry items and the bath water.
  • the level N e1 in the drum during the washing phase extends in a range between 50 and 90mm.
  • the level N e2 in the drum during said at least two rinsing phases is greater than 100mm.
  • the level N e2 in the drum during a second rinsing phase extends in a range between 100mm and 140mm, and preferably of the order of 115mm.
  • the water levels determined for each step of the washing process allow the clothes to be suspended in the drum and thus avoid wrinkling. In this way, the clothes are not subject to weight constraints.
  • the method of washing the laundry comprises a step of measuring the level of soiling determined during the phase Prewash.
  • the step of measuring the level of soiling is carried out after introduction of water into the drum.
  • the measurement for determining the level of soiling is a measurement of conductivity.
  • the parameters of the phases of the washing process are slaved according to the level of soiling.
  • the laundry washing method makes it possible to determine the level of soiling of the laundry and can adapt the parameters such as, for example, the duration of the phases and the consumption of water. In this way, the laundry can be protected against wear.
  • the present invention also aims according to a second aspect to provide a washing machine and / or drying the laundry equipped with a tank filled with liquid from a water intake, a rotating drum loading clothes and control means of a laundry program implementing the washing method.
  • the invention will be described in connection with a top-loading washing machine 1 illustrated in FIG. figure 1 but can just as easily 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 the atmosphere acts with an electrical contact that gives the level signal reached, the automation.
  • This level reached is also not necessarily chosen to correspond to a volume of water available at the bottom of the tank sufficient to operate the apparatus 1 in a normal way (or nominal).
  • a variant of the invention is to make the level reached coincide with the volume of water at the bottom of the tank 3 just necessary, and sufficient, for a good functioning of the apparatus 1.
  • the device for regulating the water level thus makes it possible to obtain a level well determined necessary to protect the laundry from mechanical action and optimize water consumption.
  • the washing machine 1 also comprises a drain pump for renewing the liquid at the bottom of the tank 3.
  • the lower part of the tank 3 comprises a recycling pump provided with a water guide pipe discharged by the bearing of the drum 4 and a drain pump connected to a discharge pipe. Filters and microfilters make it possible to recycle the clean water to supply the drum 4 in a closed circuit so as to save the volume of water introduced from the outside.
  • washing and rinsing cycles are sequenced in baths by emptying operations during which only the drain pump is actuated.
  • the washing process makes it possible to wash the articles of laundry containing body soils, such as, for example, sebum and human secretions, by limiting their wrinkling and by ensuring correct washing performance.
  • This washing process is particularly suitable for a load of laundry whose mass varies between 500g and 2kg.
  • Said at least a first phase of intermediate spin prevents the crumpling of the laundry and in particular the formation of folds of the hot laundry since said phase follows the wash phase where the bath water is heated.
  • the laundry washing method may comprise a step of measuring the level of soiling determined during the prewashing phase. This step makes it possible to determine the level of soiling of the pieces of laundry.
  • the step of measuring the level of soiling is carried out after introduction of water into the drum 4.
  • the measurement for determining the level of soiling may be a measure of conductivity.
  • a first level of soiling corresponds to pieces of laundry not or slightly dirty.
  • the first level of soiling may correspond to clothing worn during the work week, in particular for clothing worn during a sedentary professional activity.
  • a second level of soiling corresponds to dirty or very dirty pieces of laundry.
  • the second level of soiling may correspond to clothing worn during a sports activity.
  • the detection of the level of soiling of the laundry items by a conductivity measurement can be established from two minutes following the introduction of water into the drum 4.
  • the detection of the level of soiling is carried out in particular during the brewing of the laundry during the prewash phase.
  • the parameters of the phases of the washing process are slaved according to the level of soiling.
  • the optimization of the laundry program can enslave in particular the parameters such as for example the lengths of the phases of the washing process and the water consumption.
  • the washing process makes it possible to consume the energy strictly necessary to obtain desired washing performance.
  • this adaptation of the washing program protects the laundry from wear.
  • the recognition of the level of soiling of the laundry items may be related to the load recognition of laundry.
  • the washing method may comprise a step of measuring the level of soiling carried out during said at least two rinsing phases.
  • the washing process may also include a step of comparing the measurement of the level of soiling of the rinsing water with respect to the level of soiling of the water of the network.
  • the step of measuring the level of soiling carried out during said at least two rinsing phases can be carried out by means of a conductivity probe (not shown).
  • the washing process may comprise a step of cooling the end-of-wash bath preceding said at least one first intermediate spinning phase and said at least two rinsing phases carried out by introduction of cold water into the drum 4.
  • the washing method avoids a thermal shock between the laundry items and the bath water.
  • the washing process makes it possible to limit the rotation speeds V 1 , V 2 and V 3 of the drum 4 during the intermediate and final spinning stages.
  • the rotational speed V 1 of the drum 4 is less than or equal to 250 rpm during the first intermediate spinning phase.
  • the rotation speed V 2 of the drum 4 is less than or equal to 450 revolutions per minute during the second intermediate spinning phase.
  • the rotation speed V 3 of the drum 4 is less than or equal to 800 revolutions per minute during the final spinning phase.
  • This washing process makes it possible to limit the maximum rotation speed of the drum 4 and the durations of the intermediate or maximum speed bearings.
  • said peak comprises an instantaneous rise and fall in rotation speed of the drum 4.
  • the duration of the rise of the peak is short and extending in a range of 2 to 10 seconds.
  • the descent is also of short duration and extending in a range of equivalent duration.
  • the rotation speed of the drum 4 during the peak is less than or equal to 250 revolutions per minute.
  • Said at least a first intermediate spinning phase comprising a peak speed of rotation of the drum 4 is carried out following the rise in rotation speed of the drum 4 in steps.
  • the rise in rotation speed of the drum 4 for the peak is carried out while the laundry is already orbitalized on the inner peripheral wall of the drum 4. In this way, the laundry is neither damaged nor creased by this mechanical action.
  • Said at least a second intermediate spin phase and the final spin phase comprise an increase in the speed of rotation of the progressive drum 4.
  • the rise in rotation speed of the drum 4 is of the order of 8 revolutions per minute per second during the final spinning step. This rise in rotation speed of the drum 4 is followed by a bearing at a rotation speed substantially equal to 800tr / min for a duration of about 32 seconds.
  • the final spin profile is illustrated at figure 3 .
  • the gradual ramp of the increase in speed of rotation of the drum 4 during the final spin phase is defined by an acceleration of between 6 and 20 revolutions per minute per second over a period of the order of 50 to 100 seconds, and preferably of the order of 70 seconds.
  • the gradual ramp of the increase in speed of rotation of the drum 4 takes place over a range of the order of 590 revolutions per minute.
  • the rise in rotation speed of the drum 4 is of the order of 8 revolutions per minute per second during the final spinning step.
  • This rise in rotation speed of the drum 4 is followed by a bearing at a rotation speed substantially equal to 800tr / min for a duration of about 32 seconds.
  • the final spin profile is illustrated at figure 3 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 and final spinning stages 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 disturbed by the noise caused by the machine during said intermediate spinning steps.
  • the progressivity of the rise ramp in rotation speed of the drum 4 makes it possible to effectively protect the textiles against frictional wear with said drum 4.
  • the laundry is pressed against the inner peripheral wall of the drum 4 without movement relative to each other.
  • the laundry is rotated with the drum 4 by at least one laundry driving means disposed on the inner peripheral wall of the drum 4.
  • This laundry driving means is commonly called churn or omega.
  • the washing process uses a lower mechanical action than for a conventional program so as to perform a flexible brewing of the laundry.
  • the washing method also makes it possible to limit the wrinkling of the pieces of laundry.
  • the rotational speeds of the drum 4 during the brewing of the laundry are adapted to prevent clothes from falling back on itself.
  • the rotational speed of the drum 4 remains constant and extends in a range between 40 and 70tr / min, and preferably of the order of 50tr / min.
  • the maximum temperature T max is 40 ° C during the washing phase.
  • the washing and / or drying machine 1 comprises a water regulating device (not shown) and means for feeding said washing liquid (not shown).
  • the level of water N e2 necessary for the proper functioning of the specific program for the textile containing body soils, such as for example sebum and human secretions, is greater than for a conventional program.
  • the increase in the water level is of the order of 50% for each rinsing phase allowing the items of laundry to be immersed properly in the detergent bath.
  • the amount of water required for the proper operation of said washing process is 11 liters for the washing phase and at least 13 liters for said rinsing phases.
  • This increase in the water levels N e1 and N e2 ensures that the laundry cushioned movement in the drum 4 and prevent the pieces of laundry rub directly between them and against the drum 4.
  • the increase of the water levels N e1 and N e2 makes it possible to have a higher mechanical action compared to a traditional program.
  • the mechanical action corresponds to phases of the washing cycle where the drum 4 drives the rotating laundry and drops from the top of the drum 4 by churns thereby causing movement to the textile pieces. Therefore, washing performance is better while avoiding wrinkling clothes.
  • the level N e1 in the drum 4 during the washing phase extends in a range between 50 and 90mm.
  • the level N e2 in the drum 4 during said at least two rinsing phases is greater than 100mm.
  • the level N e2 in the drum 4 during a second rinsing phase extends in a range between 100mm and 140mm, and preferably of the order of 115mm.
  • the level of water N e2 in the drum 4 makes it possible to prevent the wrinkling of the pieces of laundry.
  • 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.
  • This washing process makes it possible to reduce the time of the operating cycle of the washing machine and / or to dry on the order of 60% compared with a conventional cotton program, by 44% compared with a conventional program comprising an anti-fatigue function. -crease and 24% compared to a classic short program.
  • the cycle time of the washing process is of the order of 37 minutes.
  • a step of breaking the laundry is carried out following the final spinning phase until the user requests the rotation stop of the drum 4 to open the drum door .
  • Said demoulding step avoids wrinkling of the laundry items following the end of the washing program.
  • the rate of rotation of the drum 4 is of the pendulum type to prevent packing of the laundry.
  • additions of water vapor are introduced into the drum 4 during at least one step of the process.
  • the method of washing laundry in a washing machine described in the present invention improves the washing performance of laundry having dirt consisting of sebum and human secretions and especially to reduce wrinkling and wear of laundry.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The process of washing dirty clothes e.g. clothes with oil and sweat in a laundry washing machine (5) having a tub (3) filled with water, rotatable drum (4) filled with clothes and program control device, comprises pre-washing the clothes without using detergent at a temperature less than or equal to a threshold of 40[deg]C of which the water level reaches an initial threshold, and first and second spin-drying stages of the clothes in the drum at a rotational speed less than or equal to a threshold of 250 and 450 respectively per minute. The process of washing dirty clothes e.g. clothes with oil and sweat in a laundry washing machine (5) having a tub (3) filled with water, rotatable drum (4) filled with clothes and program control device, comprises pre-washing the clothes without using detergent at a temperature less than or equal to a threshold of 40[deg]C of which the water level reaches an initial threshold, first and second spin-drying stages of the clothes in the drum at a rotational speed less than or equal to a threshold of 250 and 450 respectively per minute, rinsing the clothes of which the water level is greater than a second threshold, cooling the tub at an end of washing the clothes preceding the first spin-drying stage and rinsing state by introducing cold water in the drum, and conductivity measurement of the dirt level determined during the prewashing stage after introduction of water in the drum. A level of the clothes in the drum during the washing phase extends to 50-90 mm and the rinsing phase extends to 115 mm. A rotational speed of the drum during a final spin-drying stage of the clothe is 8 rotations per minute per second. An independent claim is included for a washing machine and/or drier.

Description

La présente invention concerne d'une part un procédé de lavage du linge dans une machine à laver le linge de manière à optimiser le cycle de lavage de vêtements peu sales et à éviter le froissage de ces vêtements, et d'autre part, une machine adaptée à mettre en oeuvre le procédé de lavage conforme à l'invention.The present invention relates firstly to a method of washing laundry in a washing machine so as to optimize the cycle of washing lightly soiled clothes and to avoid wrinkling of these clothes, and secondly, 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 (voir par exemple le document EP-A-1087051 ).In general, the invention relates to washing machines, and more particularly to machines for domestic use (see for example the document EP-A-1087051 ).

Actuellement, les programmes disponibles sur les machines à laver le linge utilisés pour des textiles peu sales ne sont pas adaptés pour optimiser le cycle de lavage et limiter le froissage des vêtements.At present, the programs available on washing machines used for lightly soiled textiles are not suitable for optimizing the washing cycle and limiting wrinkling of clothes.

Les machines à laver le linge disponibles sur le marché comprennent un touche anti-froissage ou repassage facile permettant de limiter la corvée de repassage. Ces cycles sont destinés à laver des charges de linge classiques d'un poids de 3,5kg en moyenne. Les programmes associés à ces cycles de lavage sont adaptés en conséquence et nécessitent des durées de programme et des temps d'essorage relativement conséquents. La nature des taches à traiter est également variée et nécessite une action mécanique et une température de bain élevées lors des cycles de lavage. La température du bain de lavage est généralement de l'ordre de 60°C.The washing machines available on the market include an anti-crease or easy ironing button to limit the ironing chore. These cycles are intended to wash conventional laundry loads weighing an average of 3.5 kg. The programs associated with these wash cycles are adapted accordingly and require relatively long program times and spin times. The nature of the stains to be treated is also varied and requires a high mechanical action and bath temperature during washing cycles. The temperature of the wash bath is generally of the order of 60 ° C.

Ces machines à laver le linge comprenant l'option anti-froissage proposées pour les programmes classiques tels que par exemple les programmes coton et mixte ne peut pas agir correctement sur le résultat de froissage des vêtements sans dégrader d'autres performances attendues sur ce type de programme au niveau du lavage et du rinçage en particulier.These washing machines including the anti-crease option proposed for conventional programs such as for example the cotton and mixed programs can not act correctly on the result of creasing clothes without degrading other performance expected on this type of program in washing and rinsing in particular.

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 présentant des salissures corporelles 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 for washing laundry having body soiling in a washing machine comprising a tank filled with liquid from a water inlet, a rotary drum for loading the laundry, control means of a laundry program.

Ce procédé comprend au moins les étapes suivantes exécutées en continu et dans l'ordre mentionné :

  • une phase de prélavage sans utilisation de détergent ;
  • une phase de lavage ayant une température de lavage inférieure ou égale à un seuil Tmax de 40°C dont le niveau d'eau atteint au moins un premier seuil Ne1 ;
  • au moins une première phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour ayant des paliers pour expulser l'eau du linge et suivie d'un pic, la vitesse de rotation étant inférieure ou égale à un seuil V1 de 250 tours par minute ;
  • au moins deux phases de rinçage dont le niveau d'eau est supérieur à un second seuil Ne2 ;
  • au moins une seconde phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour suivant une rampe progressive et la vitesse de rotation est inférieure ou égale à un seuil V2 de 450 tours par minute ; et
  • une phase d'essorage final comportant une montée en vitesse de rotation du tambour suivant une rampe progressive et la vitesse de rotation du tambour est inférieure ou égale à un seuil V3 de 800 tours par minute.
This method comprises at least the following steps performed continuously and in the order mentioned:
  • a prewash phase without the use of detergent;
  • a wash phase having a wash temperature less than or equal to a threshold T max of 40 ° C whose water level reaches at least a first threshold N e1 ;
  • at least a first intermediate spinning stage comprising a rise in rotation speed of the drum having bearings for expelling water from the laundry and followed by a peak, the rotational speed being less than or equal to a threshold V 1 of 250 Rotations per minute ;
  • at least two rinsing phases whose water level is greater than a second threshold N e2 ;
  • at least a second intermediate spinning phase comprising a rise in rotation speed of the drum in a progressive ramp and the speed of rotation is less than or equal to a threshold V 2 of 450 revolutions per minute; and
  • a final spin phase comprising a rise in rotation speed of the drum in a progressive ramp and the speed of rotation of the drum is less than or equal to a threshold V 3 of 800 revolutions per minute.

Le procédé de lavage proposé est ciblé sur des pièces de linge très spécifiques qui correspondent aux pièces de linge les plus contraignantes à repasser. Lesdites pièces de linge les plus contraignantes à repasser sont par exemple des chemises, des sous-vêtements ou encore des T-shirts. Ces pièces de linge présentent deux caractéristiques principales. Les vêtements portés près du corps tels que les sous-vêtements présentent des salissures corporelles provoquant des odeurs désagréables. Et les vêtements tels que des chemises et chemisiers doivent être faciles à repasser.The washing process proposed is targeted at very specific items of laundry that correspond to the most restrictive pieces of linen to be ironed. Said items of the most restrictive ironing are for example shirts, underwear or T-shirts. These items of laundry have two main characteristics. Clothing worn close to the body such as underwear have body soiling causing unpleasant odors. And clothes such as shirts and blouses must be easy to iron.

Ainsi, le procédé de lavage permet de laver le linge de la semaine en limitant au maximum le froissage et en assurant un lavage parfait de ce type de vêtements en un minimum de temps.Thus, the washing process makes it possible to wash the laundry of the week by limiting as much as possible the creasing and ensuring a perfect washing of this type of clothing in a minimum of time.

Les familles de taches que l'on retrouve sur ce type de vêtements sont beaucoup plus réduites que pour une charge de linge courante. Les taches ciblées se limitent au sébum et sécrétions humaines tels que par exemple la transpiration. L'ajout d'une phase de prélavage automatique sans l'utilisation de lessive avant la phase de lavage permet une amélioration nette de la performance de lavage du sébum et de la transpiration. La durée du cycle de lavage, l'action mécanique et la température peuvent alors être réduites lors de la phase de lavage car le sébum et la transpiration n'y sont pas trop sensibles et la phase de prélavage permet de compenser cette perte d'action en phase de lavage.The families of stains found on this type of clothing are much smaller than for a load of current laundry. The targeted spots are limited to sebum and human secretions such as for example perspiration. The addition of an automatic prewash phase without the use of laundry before the wash phase allows a clear improvement in sebum washing performance and transpiration. The duration of the washing cycle, the mechanical action and the temperature can then be reduced during the washing phase because sebum and transpiration are not too sensitive and the prewash phase compensates for this loss of action. in washing phase.

Les phases d'essorages peuvent être limitées en durée et en vitesse atteintes car la charge maximale autorisée pour ce type de programme est de l'ordre de 2kg, et préférentiellement de 1,5kg (soit l'équivalent de 6 chemises environ) et permet ainsi de limiter le froissage des pièces de linge.The spinning phases can be limited in time and speed achieved because the maximum load allowed for this type of program is of the order of 2kg, and preferably 1.5kg (equivalent to about 6 shirts) and allows thus to limit the wrinkling of the pieces of linen.

Compte tenu des caractéristiques ci-dessus, le procédé de lavage selon l'invention permet de laver du linge peu sale, dont les taches sont constituées essentiellement de sébum et de sécrétions humaines, suivant des paramètres associés au cycle de lavage, de rincer et d'essorer le linge suivant des profils de rinçage et d'essorage spécifiques et des vitesses de rotation du tambour limitées.Given the above characteristics, the washing method according to the invention makes it possible to wash lightly soiled laundry, whose stains consist essentially of sebum and human secretions, according to parameters associated with the washing cycle, rinsing and drying. spinning the laundry according to specific rinsing and spinning patterns and limited drum rotation speeds.

Le programme de lavage comprenant cette succession d'étapes permet d'améliorer la performance de lavage, et ainsi d'éviter le froissage des étoffes. Cette succession d'étapes permet de réduire le temps de cycle du programme de lavage.The washing program comprising this succession of steps makes it possible to improve the washing performance, and thus to avoid wrinkling the fabrics. This succession of steps makes it possible to reduce the cycle time of the washing program.

La phase de prélavage est systématique pour l'accomplissement dudit programme de lavage. Ladite phase de prélavage permet d'obtenir une meilleure performance de lavage des taches de sébum et de sécrétions humaines.The prewash phase is systematic for the accomplishment of said washing program. Said prewash phase makes it possible to obtain a better washing performance of sebum stains and human secretions.

Ladite au moins une phase d'essorage intermédiaire suivant la phase de lavage, où la température du bain est suffisante, est adaptée à limiter la formation de plis sur les pièces de linge. Ladite au moins une phase d'essorage intermédiaire suit une montée en vitesse de rotation du tambour progressive et sans à-coups.Said at least one intermediate spinning phase following the washing phase, where the bath temperature is sufficient, is adapted to limit the formation of wrinkles on the laundry items. Said at least one intermediate spin phase follows a gradual increase in rotation speed of the drum and smoothly.

En outre, ce procédé de lavage permet de limiter l'usure des pièces de linge.In addition, this washing process allows to limit the wear of the clothes.

La limitation des vitesses de rotation V1 et V2 du tambour lors desdites au moins deux phases d'essorage intermédiaires et de la vitesse de rotation V3 lors de la phase d'essorage final permet de limiter le froissage des pièces de linge.The limitation of the rotation speeds V 1 and V 2 of the drum during said at least two intermediate spinning stages and the speed of rotation V 3 during the final spinning phase makes it possible to limit the wrinkling of the pieces of laundry.

Selon une caractéristique avantageuse de l'invention, le procédé de lavage du linge comprend une étape de refroidissement du bain de fin de lavage précédant ladite au moins une première phase d'essorage intermédiaire et lesdites au moins deux phases de rinçage mise en oeuvre par introduction d'eau froide dans le tambour.According to an advantageous characteristic of the invention, the laundry washing method comprises a step of cooling the end-of-washing bath preceding said at least a first intermediate spinning phase and said at least two rinsing phases implemented by introduction. of cold water in the drum.

Cette étape permet de limiter le froissage du linge en évitant les chocs thermiques entre les pièces de linge et l'eau du bain.This step makes it possible to limit the creasing of the laundry by avoiding thermal shocks between the laundry items and the bath water.

Selon une caractéristique préférée de l'invention, le niveau Ne1 dans le tambour au cours de la phase de lavage s'étend dans une plage entre 50 et 90mm.According to a preferred characteristic of the invention, the level N e1 in the drum during the washing phase extends in a range between 50 and 90mm.

Selon une autre caractéristique préférée de l'invention, le niveau Ne2 dans le tambour au cours desdites au moins deux phases de rinçage est supérieur à 100mm.According to another preferred feature of the invention, the level N e2 in the drum during said at least two rinsing phases is greater than 100mm.

Selon une autre caractéristique préférée de l'invention, le niveau Ne2 dans le tambour au cours d'une seconde phase de rinçage s'étend dans une plage comprise entre 100mm et 140mm, et préférentiellement de l'ordre de 115mm.According to another preferred feature of the invention, the level N e2 in the drum during a second rinsing phase extends in a range between 100mm and 140mm, and preferably of the order of 115mm.

Les niveaux d'eau déterminés pour chaque étape du procédé de lavage permettent aux pièces de linge d'être en suspension dans le tambour et éviter ainsi de se froisser. De cette manière, les pièces de linge ne subissent pas de contrainte de poids.The water levels determined for each step of the washing process allow the clothes to be suspended in the drum and thus avoid wrinkling. In this way, the clothes are not subject to weight constraints.

Selon une caractéristique avantageuse de l'invention, le procédé de lavage du linge comprend une étape de mesure du niveau de salissures déterminé lors de la phase de prélavage.According to an advantageous characteristic of the invention, the method of washing the laundry comprises a step of measuring the level of soiling determined during the phase Prewash.

Selon une autre caractéristique préférée de l'invention, l'étape de mesure du niveau de salissures est mise en oeuvre après introduction d'eau dans le tambour.According to another preferred characteristic of the invention, the step of measuring the level of soiling is carried out after introduction of water into the drum.

Selon une autre caractéristique préférée de l'invention, la mesure permettant de déterminer le niveau de salissures est une mesure de conductivité.According to another preferred feature of the invention, the measurement for determining the level of soiling is a measurement of conductivity.

Selon une autre caractéristique préférée de l'invention, les paramètres des phases du procédé de lavage sont asservis en fonction du niveau de salissures.According to another preferred feature of the invention, the parameters of the phases of the washing process are slaved according to the level of soiling.

Ainsi, le procédé de lavage du linge permet de déterminer le niveau de salissures du linge et peut adapter les paramètres tels que par exemple les durées des phases et les consommations d'eau. De cette manière, le linge peut être protégé contre l'usure.Thus, the laundry washing method makes it possible to determine the level of soiling of the laundry and can adapt the parameters such as, for example, the duration of the phases and the consumption of water. In this way, the laundry can be protected against wear.

La présente invention vise également selon un second aspect à fournir une machine à laver et / ou sécher le linge 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 and / or drying the laundry equipped with a tank filled with liquid from a water intake, a rotating drum loading clothes 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 ; et
  • la figure 3 illustre un profil d'essorage final d'un lave-linge conforme à un mode de réalisation de l'invention.
The invention will be better understood and other advantages will emerge more clearly on reading the description which follows given in a non-limiting manner, with reference to the appended figures, in which:
  • 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 an embodiment of the invention; and
  • the figure 3 illustrates a final spin profile of a washing machine according to an embodiment of the invention.

L'invention va être décrite dans le cadre d'un lave-linge 1 à chargement par le dessus illustré à la figure 1, 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 connection with a top-loading washing machine 1 illustrated in FIG. figure 1 but can just as easily be applied in the case of a front-loading washing machine 1 where the same type of problem is encountered.

De manière générale un appareil électroménager 1 tel qu'un lave-linge, schématisé en figure 1, comprend une carrosserie 2, une cuve 3 remplie en liquide à partir d'une prise d'arrivée en eau, dans laquelle est montée un tambour 4 rotatif de chargement du linge, des moyens de commande d'un programme de lavage du linge 5 et un dispositif de régulation de niveau d'eau (non représenté). Ce dispositif de régulation d'eau peut être, de manière connue, constitué d'un pressostat à air dont la chambre de compression, en cloche, est disposée dans la cuve 3 de l'appareil électroménager 1. La membrane du pressostat qui se déplace sous l'effet des variations de pression relative à l'atmosphère agit avec un contact électrique qui donne le signal de niveau atteint, à l'automatisme. Ce niveau atteint n'est d'ailleurs pas choisi nécessairement pour correspondre à un volume d'eau disponible en fond de cuve suffisant pour faire fonctionner l'appareil 1 de façon normale (ou nominale). Une variante de l'invention, est de faire coïncider le niveau atteint avec le volume d'eau en fond de cuve 3 juste nécessaire, et suffisant, à un bon fonctionnement de l'appareil 1. Le dispositif de régulation du niveau d'eau permet ainsi d'obtenir un niveau bien déterminé nécessaire pour protéger le linge de l'action mécanique et d'optimiser la consommation d'eau.In general, 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 the atmosphere acts with an electrical contact that gives the level signal reached, the automation. This level reached is also not necessarily chosen to correspond to a volume of water available at the bottom of the tank sufficient to operate the apparatus 1 in a normal way (or nominal). A variant of the invention is to make the level reached coincide with the volume of water at the bottom of the tank 3 just necessary, and sufficient, for a good functioning of the apparatus 1. The device for regulating the water level thus makes it possible to obtain a level well determined necessary to protect the laundry from mechanical action and optimize water consumption.

Le lave-linge 1 comporte par ailleurs une pompe de vidange permettant de renouveler le liquide au fond de cuve 3. La partie inférieure de la cuve 3 comporte une pompe de recyclage munie d'une canalisation de guidage d'eau refoulée par le palier du tambour 4 et une pompe de vidange reliée à une conduite d'évacuation. Des filtres et micro - filtres permettent de recycler l'eau propre pour alimenter en circuit fermé le tambour 4 de manière à économiser le volume d'eau introduit depuis l'extérieur.The washing machine 1 also comprises a drain pump for renewing the liquid at the bottom of the tank 3. The lower part of the tank 3 comprises a recycling pump provided with a water guide pipe discharged by the bearing of the drum 4 and a drain pump connected to a discharge pipe. Filters and microfilters make it possible to recycle the clean water to supply the drum 4 in a closed circuit so as to save the volume of water introduced from the outside.

De manière générale, les cycles de lavage et de rinçage sont séquencés en bains par des opérations de vidange durant lesquelles seule la pompe de vidange est actionnée.In general, the washing and rinsing cycles are sequenced in baths by emptying operations during which only the drain pump is actuated.

Le procédé de lavage comprend au moins les étapes suivantes exécutées en continu et dans l'ordre mentionné :

  • une phase de prélavage sans utilisation de détergent ;
  • une phase de lavage ayant une température de lavage inférieure ou égale à un seuil Tmax de 40°C dont le niveau d'eau atteint au moins un premier seuil Ne1;
  • au moins une première phase d'essorage intermédiaire comportant une montée en vitesse de rotation du tambour 4 ayant des paliers pour expulser l'eau du linge et suivie d'un pic, la vitesse de rotation étant inférieure ou égale à un seuil V1 de 250 tours par minute ;
  • au moins deux phases de rinçage dont le niveau d'eau est supérieur à un second seuil Ne2 ;
  • au moins une seconde 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 ou égale à un seuil V2 de 450 tours par minute ; et
  • une phase d'essorage final comportant une montée en vitesse de rotation du tambour 4 suivant une rampe progressive et la vitesse de rotation du tambour 4 est inférieure ou égale à un seuil V3 de 800 tours par minute.
The washing process comprises at least the following steps performed continuously and in the order mentioned:
  • a prewash phase without the use of detergent;
  • a washing phase having a washing temperature less than or equal to a threshold T max of 40 ° C whose water level reaches at least a first threshold Ne1;
  • at least a first intermediate spinning stage comprising a rise in rotational speed of the drum 4 having bearings for expelling water from the laundry and followed by a peak, the rotation speed being less than or equal to a threshold V 1 of 250 rpm;
  • at least two rinsing phases whose water level is greater than a second threshold N e2 ;
  • at least a second intermediate spinning phase comprising a rise in rotation speed of the drum 4 in a progressive ramp and the speed of rotation is less than or equal to a threshold V 2 of 450 revolutions per minute; and
  • a final spin phase comprising a rise in rotation speed of the drum 4 in a progressive ramp and the rotational speed of the drum 4 is less than or equal to a threshold V 3 of 800 revolutions per minute.

Ainsi, le procédé de lavage permet de laver les pièces de linge comportant des salissures corporelles, tels que par exemple du sébum et des sécrétions humaines, en limitant leur froissage et en assurant des performances de lavage correctes.Thus, the washing process makes it possible to wash the articles of laundry containing body soils, such as, for example, sebum and human secretions, by limiting their wrinkling and by ensuring correct washing performance.

Ce procédé de lavage est particulièrement adapté pour une charge de linge dont la masse varie entre 500g et 2kg.This washing process is particularly suitable for a load of laundry whose mass varies between 500g and 2kg.

Ladite au moins une première phase d'essorage intermédiaire permet d'éviter le froissage du linge et notamment la formation de plis du linge à chaud étant donné que ladite phase suit la phase de lavage où l'eau du bain est chauffée.Said at least a first phase of intermediate spin prevents the crumpling of the laundry and in particular the formation of folds of the hot laundry since said phase follows the wash phase where the bath water is heated.

Au début du cycle de fonctionnement de la machine à laver et / ou sécher le linge 1, une quantité d'eau définie et fixe est introduite dans le tambour 4 sans l'apport de détergent. Les salissures corporelles constituées de sébum et de sécrétions humaines des pièces de linge sont diffusées dans l'eau.At the beginning of the cycle of operation of the washing machine and / or drying the laundry 1, a fixed and fixed amount of water is introduced into the drum 4 without the addition of detergent. The body soils consisting of sebum and human secretions of the clothes are diffused in the water.

Ainsi, le procédé de lavage du linge peut comprendre une étape de mesure du niveau de salissures déterminé lors de la phase de prélavage. Cette étape permet de déterminer le niveau de salissures des pièces de linge.Thus, the laundry washing method may comprise a step of measuring the level of soiling determined during the prewashing phase. This step makes it possible to determine the level of soiling of the pieces of laundry.

L'étape de mesure du niveau de salissures est mise en oeuvre après introduction d'eau dans le tambour 4.The step of measuring the level of soiling is carried out after introduction of water into the drum 4.

La mesure permettant de déterminer le niveau de salissures peut être une mesure de conductivité.The measurement for determining the level of soiling may be a measure of conductivity.

La mesure de conductivité du bain permet de déterminer au moins deux niveaux de salissures des pièces de linge. Un premier niveau de salissures correspond à des pièces de linge pas ou peu sales. Le premier niveau de salissures peut correspondre à des vêtements portés au cours de la semaine de travail, notamment pour des vêtements portés lors d'une activité professionnelle sédentaire. Et un second niveau de salissures correspond à des pièces de linge sales ou très sales. Le second niveau de salissures peut correspondre à des vêtements portés lors d'une activité sportive.The measurement of the conductivity of the bath makes it possible to determine at least two levels of soiling of the pieces of laundry. A first level of soiling corresponds to pieces of laundry not or slightly dirty. The first level of soiling may correspond to clothing worn during the work week, in particular for clothing worn during a sedentary professional activity. And a second level of soiling corresponds to dirty or very dirty pieces of laundry. The second level of soiling may correspond to clothing worn during a sports activity.

La détection du niveau de salissures des pièces de linge par une mesure de conductivité peut être établie à partir de deux minutes suite à l'introduction d'eau dans le tambour 4.The detection of the level of soiling of the laundry items by a conductivity measurement can be established from two minutes following the introduction of water into the drum 4.

La détection du niveau de salissures s'effectue en particulier au cours du brassage du linge lors de la phase de prélavage.The detection of the level of soiling is carried out in particular during the brewing of the laundry during the prewash phase.

Les paramètres des phases du procédé de lavage sont asservis en fonction du niveau de salissures. L'optimisation du programme de lavage du linge permet d'asservir notamment les paramètres tels que par exemple les durées des phases du procédé de lavage et les consommations d'eau. Ainsi, le procédé de lavage permet de consommer l'énergie strictement nécessaire pour obtenir des performances de lavage souhaitées. En outre, cette adaptation du programme de lavage permet de protéger le linge de l'usure.The parameters of the phases of the washing process are slaved according to the level of soiling. The optimization of the laundry program can enslave in particular the parameters such as for example the lengths of the phases of the washing process and the water consumption. Thus, the washing process makes it possible to consume the energy strictly necessary to obtain desired washing performance. In addition, this adaptation of the washing program protects the laundry from wear.

Dans un mode de réalisation perfectionné, la reconnaissance du niveau de salissures des pièces de linge peut être liée à la reconnaissance de charge de linge.In an improved embodiment, the recognition of the level of soiling of the laundry items may be related to the load recognition of laundry.

En outre, le procédé de lavage peut comprendre une étape de mesure du niveau de salissures mise en oeuvre au cours desdites au moins deux phases de rinçage.In addition, the washing method may comprise a step of measuring the level of soiling carried out during said at least two rinsing phases.

Le procédé de lavage peut comprendre également une étape de comparaison de la mesure du niveau de salissures de l'eau de rinçage par rapport au niveau de salissures de l'eau du réseau.The washing process may also include a step of comparing the measurement of the level of soiling of the rinsing water with respect to the level of soiling of the water of the network.

Les étapes de mesure et de traitement du niveau de salissures lors desdites phases de rinçage permettent d'adapter la durée et la consommation d'eau au cours de celles-ci.The steps of measuring and treating the level of soiling during said rinsing phases make it possible to adapt the duration and the consumption of water during these rinses.

L'étape de mesure du niveau de salissures mise en oeuvre au cours desdites au moins deux phases de rinçage peut être réalisée par avec une sonde de conductivité (non représentée).The step of measuring the level of soiling carried out during said at least two rinsing phases can be carried out by means of a conductivity probe (not shown).

Les paramètres influents sur le froissage des pièces de linge pendant un cycle de fonctionnement d'une machine à laver et / ou sécher le linge sont les suivants :

  • le niveau de remplissage du tambour 4 ;
  • l'action mécanique au cours du cycle, l'action mécanique est caractérisée par la durée de la phase de lavage et la cadence de rotation du tambour 4 ;
  • les phases d'essorage intermédiaires et final ; et
  • la température du bain de lavage.
The parameters influencing the creasing of the laundry items during a cycle of operation of a washing machine and / or drying the laundry are as follows:
  • the filling level of the drum 4;
  • the mechanical action during the cycle, the mechanical action is characterized by the duration of the washing phase and the rate of rotation of the drum 4;
  • the intermediate and final spin phases; and
  • the temperature of the wash bath.

De manière à limiter le froissage des pièces de linge, le procédé de lavage peut comprendre une étape de refroidissement du bain de fin de lavage précédant ladite au moins une première phase d'essorage intermédiaire et lesdites au moins deux phases de rinçage mise en oeuvre par introduction d'eau froide dans le tambour 4.In order to limit wrinkling of the laundry articles, the washing process may comprise a step of cooling the end-of-wash bath preceding said at least one first intermediate spinning phase and said at least two rinsing phases carried out by introduction of cold water into the drum 4.

Ainsi, le procédé de lavage permet d'éviter un choc thermique entre les pièces de linge et l'eau du bain.Thus, the washing method avoids a thermal shock between the laundry items and the bath water.

En outre, le procédé de lavage permet de limiter les vitesses de rotation V1, V2 et V3 du tambour 4 lors des phases d'essorage intermédiaires et final.In addition, the washing process makes it possible to limit the rotation speeds V 1 , V 2 and V 3 of the drum 4 during the intermediate and final spinning stages.

La vitesse de rotation V1 du tambour 4 est inférieure ou égale à 250 tours par minute lors de la première phase d'essorage intermédiaire.The rotational speed V 1 of the drum 4 is less than or equal to 250 rpm during the first intermediate spinning phase.

La vitesse de rotation V2 du tambour 4 est inférieure ou égale à 450 tours par minute lors de la seconde phase d'essorage intermédiaire.The rotation speed V 2 of the drum 4 is less than or equal to 450 revolutions per minute during the second intermediate spinning phase.

La vitesse de rotation V3 du tambour 4 est inférieure ou égale à 800 tours par minute lors de la phase d'essorage final.The rotation speed V 3 of the drum 4 is less than or equal to 800 revolutions per minute during the final spinning phase.

Ce procédé de lavage permet de limiter la vitesse de rotation maximale du tambour 4 et les durées des paliers à vitesse intermédiaire ou maximale.This washing process makes it possible to limit the maximum rotation speed of the drum 4 and the durations of the intermediate or maximum speed bearings.

Lors de ladite au moins une première phase d'essorage intermédiaire comportant un pic de montée en vitesse de rotation du tambour, ledit pic comprend une montée et une descente instantanées en vitesse de rotation du tambour 4. La durée de la montée du pic est courte et s'étendant dans une plage comprise entre 2 et 10 secondes. La descente est également de durée courte et s'étendant dans une plage de durée équivalente. La vitesse de rotation du tambour 4 lors du pic est inférieure ou égale à 250 tours par minute.During said at least a first intermediate spinning phase comprising a peak speed of rotation of the drum, said peak comprises an instantaneous rise and fall in rotation speed of the drum 4. The duration of the rise of the peak is short and extending in a range of 2 to 10 seconds. The descent is also of short duration and extending in a range of equivalent duration. The rotation speed of the drum 4 during the peak is less than or equal to 250 revolutions per minute.

Ladite au moins une première phase d'essorage intermédiaire comportant un pic de montée en vitesse de rotation du tambour 4 est réalisée à la suite de la montée en vitesse de rotation du tambour 4 suivant des paliers. La montée en vitesse de rotation du tambour 4 pour le pic est réalisée alors que le linge est déjà satellisé sur la paroi périphérique intérieure du tambour 4. De cette manière, le linge n'est ni abîmé ni froissé par cette action mécanique.Said at least a first intermediate spinning phase comprising a peak speed of rotation of the drum 4 is carried out following the rise in rotation speed of the drum 4 in steps. The rise in rotation speed of the drum 4 for the peak is carried out while the laundry is already orbitalized on the inner peripheral wall of the drum 4. In this way, the laundry is neither damaged nor creased by this mechanical action.

Ladite au moins une seconde phase d'essorage intermédiaire et la phase d'essorage final comprennent une montée de la vitesse de rotation du tambour 4 progressive.Said at least a second intermediate spin phase and the final spin phase comprise an increase in the speed of rotation of the progressive drum 4.

La montée en vitesse de rotation du tambour 4 est de l'ordre de 8 tours par minute par seconde pendant l'étape d'essorage final. Cette montée en vitesse de rotation du tambour 4 est suivie d'un palier à une vitesse de rotation sensiblement égale à 800tr/min pendant une durée de l'ordre 32 secondes. Le profil d'essorage final est illustré à la figure 3.The rise in rotation speed of the drum 4 is of the order of 8 revolutions per minute per second during the final spinning step. This rise in rotation speed of the drum 4 is followed by a bearing at a rotation speed substantially equal to 800tr / min for a duration of about 32 seconds. The final spin profile is illustrated at figure 3 .

La rampe progressive de la montée en vitesse de rotation du tambour 4 lors de la phase d'essorage final est définie par une accélération comprise entre 6 et 20 tours par minute par seconde sur une durée de l'ordre de 50 à 100 secondes, et préférentiellement de l'ordre de 70 secondes. La rampe progressive de la montée en vitesse de rotation du tambour 4 s'effectue sur une plage de l'ordre de 590 tours par minutes.The gradual ramp of the increase in speed of rotation of the drum 4 during the final spin phase is defined by an acceleration of between 6 and 20 revolutions per minute per second over a period of the order of 50 to 100 seconds, and preferably of the order of 70 seconds. The gradual ramp of the increase in speed of rotation of the drum 4 takes place over a range of the order of 590 revolutions per minute.

Préférentiellement, la montée en vitesse de rotation du tambour 4 est de l'ordre de 8 tours par minute par seconde pendant l'étape d'essorage final. Cette montée en vitesse de rotation du tambour 4 est suivie d'un palier à une vitesse de rotation sensiblement égale à 800tr/min pendant une durée de l'ordre 32 secondes. Le profil d'essorage final est illustré à la figure 3 avec en abscisse le temps t en secondes et en ordonnée la vitesse V de rotation du tambour 4 en tours par minute.Preferably, the rise in rotation speed of the drum 4 is of the order of 8 revolutions per minute per second during the final spinning step. This rise in rotation speed of the drum 4 is followed by a bearing at a rotation speed substantially equal to 800tr / min for a duration of about 32 seconds. The final spin profile is illustrated at figure 3 with the abscissa time t in seconds and the ordinate speed V rotation of the drum 4 in revolutions per minute.

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 et final, le linge est satellisé sur la paroi périphérique intérieure du tambour 4 avec souplesse. Ainsi, ces phases d'essorage intermédiaires et final évitent le froissage.The progressivity of the rise ramp in rotation speed of the drum 4 prevents creasing of the laundry. During said intermediate and final spinning phases, the laundry is orbitalized on the inner peripheral wall of the drum 4 with flexibility. Thus, these intermediate and final spinning stages avoid wrinkling.

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 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. Thus, the suspended assembly moves little inside the body 2. And the body 2 is little vibration. Therefore, the user is not disturbed by the noise caused by the machine during said intermediate spinning steps.

Par ailleurs, la progressivité de la rampe de montée en vitesse de rotation du tambour 4 permet de protéger efficacement les textiles 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 drum 4 makes it possible to effectively protect the textiles against frictional wear with said drum 4. During said intermediate spinning stages, the laundry is pressed against the inner peripheral wall of the drum 4 without movement relative to each other. The laundry is rotated with the drum 4 by at least one laundry driving means disposed on the inner peripheral wall of the drum 4. This laundry driving means is commonly called churn or omega.

Par ailleurs, le procédé de lavage utilise une action mécanique plus faible que pour un programme classique de manière à réaliser un brassage du linge en souplesse. Ainsi, le procédé de lavage permet également de limiter le froissage des pièces de linge.Furthermore, the washing process uses a lower mechanical action than for a conventional program so as to perform a flexible brewing of the laundry. Thus, the washing method also makes it possible to limit the wrinkling of the pieces of laundry.

Au cours des différentes phases du procédé de lavage, les cadences de rotation du tambour 4 lors de brassage du linge sont adaptées à éviter que les pièces de linge ne retombent sur lui-même. Ainsi, la vitesse de rotation du tambour 4 reste constante et s'étend dans une plage comprise entre 40 et 70tr/min, et préférentiellement de l'ordre de 50tr/min.During the various phases of the washing process, the rotational speeds of the drum 4 during the brewing of the laundry are adapted to prevent clothes from falling back on itself. Thus, the rotational speed of the drum 4 remains constant and extends in a range between 40 and 70tr / min, and preferably of the order of 50tr / min.

Selon une caractéristique avantageuse de l'invention, la température maximum Tmax est de 40°C lors de la phase de lavage.According to an advantageous characteristic of the invention, the maximum temperature T max is 40 ° C during the washing phase.

La machine à laver et / ou sécher le linge 1 comprend un dispositif de régulation d'eau (non représenté) et un moyen d'alimentation dudit liquide de lavage (non représenté).The washing and / or drying machine 1 comprises a water regulating device (not shown) and means for feeding said washing liquid (not shown).

Le niveau d'eau Ne2 nécessaire au bon fonctionnement du programme spécifique pour le textile comportant des salissures corporelles, tels que par exemple du sébum et des sécrétions humaines, est plus important que pour un programme classique. L'augmentation du niveau d'eau est de l'ordre de 50% pour chaque phase de rinçage permettant aux pièces de linge d'être immergées correctement dans le bain lessiviel.The level of water N e2 necessary for the proper functioning of the specific program for the textile containing body soils, such as for example sebum and human secretions, is greater than for a conventional program. The increase in the water level is of the order of 50% for each rinsing phase allowing the items of laundry to be immersed properly in the detergent bath.

Lors des essais menés par la Demanderesse, la quantité d'eau nécessaire au bon fonctionnement dudit procédé de lavage est de 11 litres pour la phase de lavage et d'au moins 13 litres pour lesdites phases de rinçage. Cette augmentation des niveaux d'eau Ne1 et Ne2 permet d'assurer au linge un mouvement amorti dans le tambour 4 et d'éviter que les pièces de linge ne frottent directement entre elles et contre le tambour 4.In the tests conducted by the Applicant, the amount of water required for the proper operation of said washing process is 11 liters for the washing phase and at least 13 liters for said rinsing phases. This increase in the water levels N e1 and N e2 ensures that the laundry cushioned movement in the drum 4 and prevent the pieces of laundry rub directly between them and against the drum 4.

En outre, l'effet d'abrasion entre les pièces de linge est réduit au cours des phases de brassage. De même, l'effet de la contrainte mécanique à la retombée des pièces de linge dans le tambour 4 au cours desdites phases de brassage est évité et permet d'éviter le froissage.In addition, the abrasion effect between the laundry items is reduced during the brewing phases. Similarly, the effect of the mechanical stress to the fall of the clothes in the drum 4 during said brewing phase is avoided and prevents creasing.

L'augmentation des niveaux d'eau Ne1 et Ne2 permet d'avoir une action mécanique plus élevée par rapport à un programme 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 tout en évitant de froisser les pièces de linge.The increase of the water levels N e1 and N e2 makes it possible to have a higher mechanical action compared to a traditional program. The mechanical action corresponds to phases of the washing cycle where the drum 4 drives the rotating laundry and drops from the top of the drum 4 by churns thereby causing movement to the textile pieces. Therefore, washing performance is better while avoiding wrinkling clothes.

Le niveau Ne1 dans le tambour 4 au cours de la phase de lavage s'étend dans une plage entre 50 et 90mm.The level N e1 in the drum 4 during the washing phase extends in a range between 50 and 90mm.

Le niveau Ne2 dans le tambour 4 au cours desdites au moins deux phases de rinçage est supérieur à 100mm.The level N e2 in the drum 4 during said at least two rinsing phases is greater than 100mm.

Le niveau Ne2 dans le tambour 4 au cours d'une seconde phase de rinçage s'étend dans une plage comprise entre 100mm et 140mm, et préférentiellement de l'ordre de 115mm.The level N e2 in the drum 4 during a second rinsing phase extends in a range between 100mm and 140mm, and preferably of the order of 115mm.

Le niveau d'eau Ne2 dans le tambour 4 permet d'éviter le froissage des pièces de linge.The level of water N e2 in the drum 4 makes it possible to prevent the wrinkling of the pieces of laundry.

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.

Ce procédé de lavage permet de réduire le temps du cycle de fonctionnement de la machine à laver et / ou sécher de l'ordre de 60% par rapport à un programme coton classique, de 44% par rapport à un programme classique comprenant une fonction anti-froissage et de 24% par rapport à un programme court classique.This washing process makes it possible to reduce the time of the operating cycle of the washing machine and / or to dry on the order of 60% compared with a conventional cotton program, by 44% compared with a conventional program comprising an anti-fatigue function. -crease and 24% compared to a classic short program.

Dans le mode de réalisation décrit, le temps de cycle du procédé de lavage est de l'ordre de 37 minutes.In the embodiment described, the cycle time of the washing process is of the order of 37 minutes.

Selon une caractéristique avantageuse de l'invention, une étape de défoulage du linge est mise en oeuvre suite à la phase d'essorage final jusqu'à ce que l'utilisateur demande l'arrêt en rotation du tambour 4 pour ouvrir la porte du tambour. Ladite étape de défoulage permet d'éviter le froissage des pièces de linge suite à la fin du programme de lavage. La cadence de rotation du tambour 4 est du type pendulaire pour éviter le tassement du linge.According to an advantageous characteristic of the invention, a step of breaking the laundry is carried out following the final spinning phase until the user requests the rotation stop of the drum 4 to open the drum door . Said demoulding step avoids wrinkling of the laundry items following the end of the washing program. The rate of rotation of the drum 4 is of the pendulum type to prevent packing of the laundry.

Dans un mode de réalisation perfectionné de l'invention, des ajouts de vapeur d'eau sont introduits dans le tambour 4 au cours d'au moins une étape du procédé.In an improved embodiment of the invention, additions of water vapor are introduced into the drum 4 during at least one step of the process.

Ces ajouts de vapeur d'eau permettent de limiter avantageusement le froissage des pièces de linge.These additions of water vapor can advantageously limit the creasing of the clothes.

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 du linge ayant des salissures constituées de sébum et de sécrétions humaines et surtout de diminuer le froissage et l'usure du linge.The method of washing laundry in a washing machine described in the present invention improves the washing performance of laundry having dirt consisting of sebum and human secretions and especially to reduce wrinkling and wear of laundry.

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 embodiments 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 apparatus.

Claims (14)

  1. A method for washing laundry exhibiting bodily dirt in a laundry washing machine comprising a tub (3) filled with liquid from a water intake, a rotating tumbler (4) for loading laundry, means of controlling a laundry wash program (5), characterized in that it comprises at least the following steps executed continuously and in the order mentioned:
    - a pre-washing phase without using detergent;
    - a washing phase having a wash temperature less than or equal to a 40°C threshold (Tmax), the water level of which reaches at least a first threshold (Ne1);
    - at least one first intermediate spinning phase comprising an increase in the rotating speed of the tumbler (4) having intervals to expel the water from the laundry and followed by a peak, the rotational speed being less than or equal to a threshold (V1) of 250 revolutions per minute;
    - at least two rinsing phases whose water level is greater than a second threshold (Ne2);
    - at least one second intermediate spinning phase comprising an increase in the speed of the tumbler (4) following a gradual ramp-up and the rotational speed is less than or equal to a threshold (V2) of 450 revolutions per minute; and
    - a final spinning phase comprising an increase in the speed of the tumbler (4) following a gradual ramp-up, and the speed of the tumbler's (4) rotation is less than or equal to a threshold (V3) of 800 revolutions per minute.
  2. A method for washing laundry, in a laundry washing and/or drying machine according to claim 1, characterized in that the level (Ne1) in the tumbler (4) during the washing phase extends within a range of between 50 and 90 mm.
  3. A method for washing laundry in a laundry washing and/or drying machine according to claim 1 or 2, characterized in that the level (Ne2) in the tumbler (4) in the course of said at least two rinsing phases is greater than 100 mm.
  4. A method for washing laundry in a laundry washing and/or drying machine according to claim 3, characterized in that the level (Ne2) in the tumbler (4) in the course of a second rinsing phase extends within a range of between 100 mm and 140 mm, and preferentially on the order of 115 mm.
  5. A method for washing laundry in a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that the increase in the speed of the tumbler (4) is in the order of 8 revolutions per minute per second during the final spinning step.
  6. A method for washing laundry in a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that it comprises a step of cooling the finishing bath water preceding said at least one first intermediate spinning phase and said at least two rinsing phases implemented by introducing cold water into the tumbler (4).
  7. A method for washing laundry in a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that additions of water vapor are introduced into the tumbler (4) in the course of at least one step of the method.
  8. A method for washing laundry in a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that it comprises a step of measuring the dirt level determined during the pre-washing phase.
  9. A method for washing laundry in a laundry washing and/or drying machine according to claim 8, characterized in that the step of measuring the dirt level is implemented after water is introduced into the tumbler (4).
  10. A method for washing laundry in a laundry washing and/or drying machine according to claim 8 or 9, characterized in that the measurement that makes it possible to determine the dirt level is a measurement of conductivity.
  11. A method for washing laundry in a laundry washing and/or drying machine according to any one of the claims 8 to 10, characterized in that the parameters of the phases of the washing method are subject to the dirt level.
  12. A method for washing laundry in a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that it comprises a step of measuring the dirt level implemented in the course of said at least two rinsing phases.
  13. A method for washing laundry in a laundry washing and/or drying machine according to claim 12, characterized in that it comprises a step of comparing the measurement of the dirt level of the rinsing water to the dirt level in the network's water.
  14. A laundry washing and/or drying machine comprising a tub filled with liquid from a water intake, a rotating tumbler (4) for loading laundry, means of controlling a laundry wash program, characterized in that the washing of the laundry is carried out according to the washing method in accordance with one of the preceding claims.
EP07106359A 2006-04-27 2007-04-17 Method of optimising the operating cycle of a washing machine and washing machine using said method Active EP1852537B1 (en)

Priority Applications (1)

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PL07106359T PL1852537T3 (en) 2006-04-27 2007-04-17 Method of optimising the operating cycle of a washing machine and washing machine using said method

Applications Claiming Priority (1)

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FR0604005A FR2900421B1 (en) 2006-04-27 2006-04-27 METHOD OF OPTIMIZING THE OPERATING CYCLE OF A WASHING MACHINE AND A WASHING MACHINE USING THE SAME

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EP1852537A3 EP1852537A3 (en) 2009-05-06
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AT (1) ATE537290T1 (en)
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JP2013009806A (en) * 2011-06-29 2013-01-17 Panasonic Corp Drum type washing machine and program for the same
JP2013009882A (en) * 2011-06-30 2013-01-17 Panasonic Corp Drum type washing machine and program for the same
EP2752515B1 (en) * 2011-09-02 2019-05-08 Panasonic Corporation Drum-type washing machine
ITPR20130088A1 (en) * 2013-11-07 2015-05-08 Indesit Co Spa METHOD OF TREATMENT OF TEXTILE ITEMS.
CN111676649A (en) * 2019-02-25 2020-09-18 青岛海尔洗衣机有限公司 Washing machine control method and washing machine
CN113981651B (en) * 2020-07-27 2024-03-15 青岛海尔洗衣机有限公司 Control method of washing machine

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JPH08299658A (en) * 1995-05-12 1996-11-19 Toshiba Corp Drum type washing machine
NL1004629C2 (en) * 1996-11-27 1998-05-28 Gerardus Theodorus Antonius Ma Method and system for washing textiles and the like.
US5781390A (en) * 1996-12-21 1998-07-14 Sgs-Thomson Microelectronics, Inc. Integrated supply protection
GB0003008D0 (en) * 2000-02-11 2000-03-29 Notetry Ltd A method of operating a domestic appliance
GB2368071A (en) * 2000-10-17 2002-04-24 Notetry Ltd Method of operating a laundry appliance
JP2003181189A (en) * 2001-12-21 2003-07-02 Toshiba Corp Washing machine

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EP1852537A2 (en) 2007-11-07
ATE537290T1 (en) 2011-12-15
FR2900421A1 (en) 2007-11-02
PL1852537T3 (en) 2012-05-31
FR2900421B1 (en) 2008-06-06
EP1852537A3 (en) 2009-05-06
ES2377992T3 (en) 2012-04-04

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