ES2377992T3 - Optimization method of the operating cycle of a washing machine and washing machine that uses said method - Google Patents

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

Optimization method of the operating cycle of a washing machine and washing machine that uses said method

[0001] The present invention relates on the one hand to a method of washing clothes in a clothes washer so as to optimize the washing cycle of poorly soiled clothes and prevent wrinkling of said clothes and, on the other hand, to a washing machine that allows the washing method according to the invention to be applied.

[0002] In general, the invention relates to washing machines and, in particular, washing machines for domestic use (see for example EP-A-1087051).

[0003] Currently, the programs available in clothes washers used for lightly soiled textiles do not optimize the washing cycle and limit the wrinkling of clothes.

[0004] Commercially available laundry machines feature an easy anti-wrinkle or ironing button that allows you to limit ironing. These cycles are designed to wash classic clothes loads of an average weight of 3.5 kg. The programs associated with these wash cycles are adapted to this and require relatively long program durations and spin times. The nature of the spots to be treated is also varied and requires a high mechanical action and bath temperature during the wash cycles. The temperature of the wash bath is generally of the order of 60 ° C.

[0005] These clothes washers that have the anti-wrinkle option proposed in the classic programs, such as in the cotton and mixed programs, cannot act correctly in the result of wrinkling of the clothes without negatively affecting other results expected in this type of programs with regard to the level of washing and in particular to the rinse.

[0006] Therefore, the invention proposes to apply a washing method by optimizing the parameters of temperature, water quantity, operating index, drum rotation speeds and drum accelerations to achieve a washing product in accordance with the user's expectations.

[0007] The interest of adapting the parameters of the washing program according to the type of clothes loaded in the drum of the clothes washer allows to optimize the energy consumption of water and electricity.

[0008] More precisely, the object of the invention is a method of washing clothes that has body dirt in a clothes washer that has a tank filled with liquid from a water feed, a rotating drum for loading clothing and control means of a laundry program.

[0009] This method has at least the following steps carried out continuously and in the order in which they are cited:

-

a prewash phase without detergent use; -a washing phase with a washing temperature less than or equal to a threshold Tmax of 40 ° C in which the water level reaches at least a first threshold Ne1;

-

at least a first intermediate spin phase with an increase in the rotation speed of the drum with

intervals to expel water from clothes and followed by a peak, the rotation speed being less or equal

that a threshold V1 of 250 revolutions per minute; -at least two rinse phases in which the water level is greater than a second threshold Ne2; -at least a second phase of intermediate centrifugation with an increase in the rotation speed of the drum

following a progressive ramp and the rotation speed is less than or equal to a V2 threshold of 450 revolutions

per minute; and -a final spin phase that has an increase in the rotation speed of the drum following a ramp

progressive and drum rotation speed is less than or equal to a V3 threshold of 800 revolutions per

minute.

[0010] The proposed washing method is oriented towards very specific clothes that correspond to the most annoying clothes of ironing. Such annoying clothes for ironing are for example shirts, underwear or t-shirts. These clothes have two main characteristics. Clothes that are attached to the body, such as underwear, have body dirt that causes unpleasant odors. Clothes such as shirts or must be easy to iron.

[0011] In this way, the washing method allows washing the clothes of the week, limiting wrinkles to the maximum and guaranteeing a perfect washing of this type of clothing in the minimum possible time.

[0012] The families of stains found in this type of clothing are much smaller than in the loads of ordinary clothes. The spots in question are limited to sebaceous secretions and other human secretions, such as perspiration. Adding an automatic prewash phase without soap use before the washing phase allows a clear improvement in the result of washing the sebaceous secretions and perspiration. In this way, the duration of the washing cycle, the mechanical action and the temperature during the washing phase can be reduced, since the sebaceous secretions and perspiration are not too sensitive to them and the prewash phase allows to compensate for that loss of action during the washing phase.

[0013] The centrifugation phases can be limited in the duration and speed reached since the maximum authorized load for these types of programs is of the order of 2 kg, and preferably 1.5 kg (ie the equivalent of six shirts approximately) which allows to limit the wrinkling of clothing.

[0014] Taking into account the characteristics indicated above, the washing method according to the invention makes it possible to wash slightly soiled clothes, which have spots essentially formed by sebaceous secretions and other human secretions, following parameters associated with the washing, rinsing and spinning cycle of clothes according to specific rinse and spin profiles and limited drum rotation speeds.

[0015] By understanding the washing program, this succession of stages can improve the washing result and prevent wrinkling of the garments. This succession of stages reduces the cycle time of the washing program.

[0016] The prewash phase is systematic for carrying out said washing program. The prewash phase allows a better result in the washing of sebaceous secretions and other human secretions.

[0017] Said at least one intermediate spin phase that follows the wash phase, in which the bath temperature is sufficient, allows to limit the formation of folds in the garments. Said at least one intermediate spin phase is followed by an increase in the speed of rotation of the progressive drum without shaking.

[0018] In addition, this washing method allows to limit the wear of the clothes.

[0019] The limitation of the rotation speeds V1 and V2 of the drum during the aforementioned at least two intermediate spin phases and the rotation speed V3 during the final spin phase makes it possible to limit the wrinkling of garments.

[0020] According to an advantageous feature of the invention, the method of laundry washing comprises a cooling stage of the bath at the end of the washing which precedes said at least a first intermediate centrifugation phase and said at least two rinse phases performed. with the introduction of cold water in the drum.

[0021] This stage allows to limit the wrinkling of clothes by avoiding thermal shocks between the clothes and the water in the bathroom.

[0022] According to a preferred feature of the invention, the level Ne1 in the drum during the washing phase extends in a range between 50 and 90 mm.

0023] According to another preferred feature of the invention, the level Ne2 in the drum during said at least two rinse phases is greater than 100 mm.

[0024] According to another preferred feature of the invention, the level Ne2 in the drum during a second rinsing phase extends in a range between 100 mm and 140 mm, preferably of the order of 115 mm.

[0025] The water levels determined for each stage of the washing method allow clothing items to be suspended in the drum and thus prevent wrinkles. In this way, garments do not suffer the effect of weight.

[0026] According to an advantageous feature of the invention, the laundry method comprises a step of measuring the level of dirt determined in the prewash phase.

[0027] According to another preferred feature of the invention, the step of measuring the level of dirt is carried out after the introduction of water into the drum.

[0028] According to another preferred feature of the invention, the measurement that allows to determine the level of dirt is a conductivity measurement.

[0029] According to another preferred feature of the invention, the parameters of the washing method phases are developed according to the level of dirt.

[0030] In this way, the laundry method allows to determine the level of dirt in the clothes and can adapt the parameters such as the duration of the phases and the water consumption. In this way, clothing can be protected from wear.

[0031] The present invention is also directed, according to a second aspect, to provide a clothes washer and / or dryer equipped with a tub filled with liquid from a water supply outlet, a rotary drum for loading clothes and control means of a laundry program that applies the washing method.

[0032] The invention will be better understood and the other advantages will be more clearly seen by reading the following description, given by way of non-limitation and referring to the attached figures, in which:

-

Figure 1 represents a schematic and partial view of a washing machine; - Figure 2 shows an intermediate spin profile of a washing machine according to an embodiment of the invention; and Figure 3 shows a final spin profile of a washing machine according to an embodiment of the invention.

[0033] The invention will be described in the context of a top loading washing machine 1 shown in Figure 1, but it can also be applied in the case of a front loading washing machine 1 in which the same type is found. of problem.

[0034] In general, an appliance 1 such as a washing machine, schematized in Figure 1, comprises a housing 2, a tank 3 filled with liquid from a water supply outlet, in which a drum 4 is mounted rotary loading of clothes, control means of a laundry program 5 and a water level regulating device (not shown). Said water regulating device can be formed, in a known manner, by an air pressure switch whose compression chamber, in bell, is arranged in the tank 3 of the household appliance 1. The pressure switch membrane that is displaced by the effect of variations The pressure relative to the atmosphere acts with an electrical contact that gives the automatism the level reached signal. This level reached is 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 (or nominal) manner. A variant of the invention is to match the level reached with the volume of water at the bottom of the tank 3 just necessary, and sufficient, for a correct operation of the apparatus 1. The water level regulating device thus allows to obtain a level determined necessary to protect clothes from mechanical action and optimize water consumption.

[0035] The washing machine 1 also has a drainage pump that allows the liquid at the bottom of the tank 3 to be renewed. The lower part of the tank 3 has a recycling pump provided with a water guide duct ejected by the drum holder 4 and a drain pump connected to an evacuation duct. Filters and microfilters allow the clean water to be recycled to feed the drum 4 in a closed circuit in order to save on the volume of water introduced from the outside.

[0036] In general, the wash and rinse cycles are sequenced in baths by emptying operations during which only the emptying pump is operated.

[0037] The washing method has at least the following stages, executed continuously and in the order cited:

-

a prewash phase without detergent use; -a washing phase with a washing temperature less than or equal to a threshold Tmax of 40 ° C in which the water level reaches at least a first threshold Ne1;

-

at least a first intermediate centrifugation phase with an increase in the rotation speed of the drum 4 with intervals to expel the water from the clothes and followed by a peak, the rotation speed being less than or equal to a threshold V1 of 250 revolutions per minute;

-

at least two rinse phases in which the water level is greater than a second threshold Ne2;

-

at least a second intermediate spin phase with an increase in the rotation speed of the drum 4 following a progressive ramp and the rotation speed is less than or equal to a threshold V2 of 450 revolutions per minute; Y

-

a final spin phase with an increase in the rotation speed of the drum following a progressive ramp and the rotation speed of the drum 4 is less than or equal to a threshold V3 of 800 revolutions per minute.

[0038] In this way, the washing method allows washing clothes with body dirt, such as sebaceous secretions and other human secretions, limiting wrinkles and guaranteeing a correct washing result.

[0039] This washing method is particularly suitable for a load of clothes weighing between 500 g and 2kg.

[0040] The aforementioned at least a first phase of intermediate centrifugation makes it possible to avoid the wrinkling of clothes and in particular the formation of hot clothes folds since said phase follows the washing phase in which the water in the water is heated. bathroom.

[0041] At the beginning of the operating cycle of the washing machine and / or clothes dryer 1, a defined and fixed amount of water is introduced into the drum 4 without adding detergent. Body dirt formed by sebaceous secretions and other human secretions in clothing are diluted in water.

[0042] Thus, the method of washing clothes can comprise a step of measuring the level of dirt that is determined in the prewash phase. This stage allows you to determine the level of dirt on the clothes.

[0043] The step of measuring the level of dirt is carried out after introducing water into the drum 4.

[0044] The measurement that allows to determine the level of dirt can be a conductivity measurement.

[0045] The conductivity measurement of the bath makes it possible to determine at least two levels of dirt in the garments. A first level of dirt corresponds to garments of little or no dirty clothes. The first level of dirt may correspond to clothing worn during the work week, particularly in the case of clothing used in a sedentary professional activity. A second level of dirt corresponds to dirty or very dirty clothes. The second level of dirt may correspond to clothing used during a sporting activity.

[0046] The detection of the level of dirt of the clothes by means of a conductivity measurement can be carried out after two minutes after the introduction of the water in the drum 4.

[0047] The detection of the level of dirt is carried out in particular during the removal of the clothes in the prewash phase.

[0048] The parameters of the washing method phases are adapted according to the level of dirt. The optimization of the laundry program allows the parameters to be adapted in particular, such as the duration of the washing method phases and water consumption. In this way, the washing method allows to consume the energy strictly necessary to obtain the desired washing result. In addition, this adaptation of the washing program allows to protect clothes from wear.

[0049] In an improved embodiment, the recognition of the level of dirt in the garments can be linked to the recognition of the load of clothes.

[0050] In addition, the washing method may comprise a step of measuring the level of dirt carried out during said at least two rinsing phases.

[0051] The washing method may also comprise a step of comparing the measurement of the level of dirt in the rinse water with respect to the level of dirt in the water in the network.

[0052] The steps of measuring and treating the level of dirt during said rinsing phases allow the duration and water consumption to be adapted during them.

[0053] The step of measuring the level of dirt carried out during said at least two rinsing phases can be performed with a conductivity probe (not shown).

[0054] The parameters that influence the wrinkling of garments during an operating cycle of a washing machine and / or a clothes dryer are the following:

-the filling level of the drum 4; -mechanical action during the cycle; the mechanical action is characterized by the duration of the washing phase and the

drum rotation cadence 4; -the intermediate and final centrifugal phases; et -the wash bath temperature.

[0055] To limit the wrinkling of garments, the washing method may comprise a cooling stage of the final wash bath that precedes said at least a first intermediate spin phase and said at least two rinse phases which It is carried out with the introduction of cold water into the drum 4.

[0056] In this way, the washing method allows to avoid a thermal shock between the garments and the bath water.

[0057] In addition, the washing method makes it possible to limit the rotation speeds V1, V2 and V3 of the drum 4 during the intermediate and final spin phases.

[0058] The rotation speed V1 of the drum 4 is less than or equal to 250 revolutions per minute during the first intermediate spin phase.

[0059] The rotation speed V2 of the drum 4 is less than or equal to 450 revolutions per minute during the second intermediate spin phase.

[0060] The rotation speed V3 of the drum 4 is less than or equal to 800 revolutions per minute during the final spin phase.

[0061] This washing method allows to limit the maximum rotation speed of the drum 4 and the duration of the intervals at intermediate or maximum speed.

[0062] During said at least one first phase of intermediate centrifugation comprising a peak of increase in the speed of rotation of the drum, said peak comprising an instantaneous rise and fall of the speed of rotation of the drum 4. The duration of the rise The peak is short and is in a range of 2 to 10 seconds. The descent is also of short duration and is in an equivalent duration interval. The rotation speed of the drum 4 during the peak is less than or equal to 250 revolutions per minute.

[0063] Said at least a first intermediate centrifugation phase comprising a peak of increase in the rotation speed of the drum 4 is performed after the increase in the rotation speed of the drum 4 by intervals. The increase in the rotation speed of the drum 4 for the beak is carried out when the clothes are already arranged in the rotation against the inner peripheral wall of the drum 4. In this way, the clothes are not damaged or wrinkled by this mechanical action.

[0064] Said at least a second intermediate spin phase and the final spin phase comprise a progressive increase in the rotation speed of the drum 4.

[0065] The increase in the rotation speed of the drum 4 is of the order of 8 revolutions per minute per second during the final spin stage. This increase in the rotation speed of the drum 4 is followed by a section at a rotation speed equal to 800 rpm. for a time of about 32 seconds. The final spin profile has been shown in Figure 3.

The progressive ramp of the increase in the rotation speed of the drum 4 during the final spin phase is defined by an acceleration between 6 and 20 revolutions per minute per second for a time of about 50 to 100 seconds, preferably about 70 seconds The progressive ramp of the increase in the rotation speed of the drum 4 is carried out in a range of about 590 revolutions per minute.

[0067] Preferably, the increase in the rotation speed of the drum 4 is about 8 revolutions per minute per second during the final spin stage. This increase in the rotation speed of the drum 4 is followed by a section at a rotation speed equal to 800 rpm. for a time of about 32 seconds. The final spin profile is shown in Figure 3, with the time t in seconds as abscissa and the speed V of rotation of the drum 4 in revolutions per minute as ordered.

[0068] The progressive nature of the ramp for increasing the speed of rotation of the drum 4 makes it possible to avoid wrinkling of the clothes. During the aforementioned intermediate and final centrifugation phases, the clothes are arranged in rotation against the inner peripheral wall of the drum 4 with smoothness. In this way, these intermediate and final spin phases prevent wrinkling.

[0069] In addition, the progressive nature of the ramp for increasing the rotation speed of the drum 4 makes it possible to avoid vibrations of the suspended assembly comprising the drum 4 and the washing tank 3 together with the housing 2. This ramp increases the Rotational speed of the drum 4 allows transient regimes to be limited by limiting vibrations, in which the suspended assembly generally tends to cause a strong amplitude of vibrations. Transitional regimes are generally between 100 and 200 revolutions per minute. In this way, the suspended assembly moves little inside the housing 2. And the housing 2 vibrates little. Therefore, the user is not disturbed by the noise caused by the machine during those intermediate spin stages.

[0070] On the other hand, the progressive nature of the ramp for increasing the rotation speed of the drum 4 makes it possible to effectively protect the clothes from wear associated with the friction with the said drum 4. During the said intermediate spin phases, the clothes are it crushes against the inner peripheral wall of the drum 4 without any movement between them. The clothes are dragged in rotation with the drum 4 by at least one means of dragging the clothes placed on the inner peripheral wall of the drum 4. This means of dragging the clothes is commonly called whisk or omega.

[0071] On the other hand, the washing method uses a weaker mechanical action than for a classical program in order to gently remove the clothes. In this way the washing method also allows to limit the wrinkling of clothes.

[0072] During the different phases of the washing method, the rotation rates of the drum 4 during the removal of the clothes make it possible to prevent the clothes from falling on themselves. In this way, the rotation speed of the drum 4 is kept constant and extends in a range of between 40 and 70 rpm, preferably about 50 rpm.

[0073] According to an advantageous feature of the invention, the maximum temperature Tmax is 40 ° C during the washing phase.

[0074] The washing machine and / or clothes dryer 1 comprises a water regulating device (not shown) and a means for feeding said washing liquid (not shown).

[0075] The level of water Ne2 necessary for the proper functioning of the specific program for textile with body stains, such as sebaceous secretions and other human secretions, is more important than for a classical program. The increase in the water level is approximately 50% for each rinse phase, which allows the garments to be properly submerged in the soapy water bath.

[0076] In tests carried out by the Claimant, the amount of water necessary for the proper functioning of said washing method is 11 liters for the washing phase and at least 13 liters for the rinsing phases. This increase in water levels Ne1 and Ne2 makes it possible to give the clothes a cushioned movement in the drum 4 and prevent the garments from rubbing against each other and against the drum 4.

[0077] In addition, the effect of abrasion between garments during agitation phases is reduced. Likewise, the effect of the mechanical tension is avoided when the garments fall on the drum 4 during said agitation phases and allows to avoid wrinkling.

[0078] The increase in water levels Ne1 and Ne2 allows for greater mechanical action compared to a traditional program. The mechanical action corresponds to the phases of the washing cycle in which the drum 4 drags the clothes in rotation and makes it fall from the top of the drum 4 by means of beaters, thus causing a movement in the textile garments. Consequently, the washing result is better and it is also avoided that the clothes are wrinkled.

[0079] The level Ne1 in the drum 4 during the washing phase is in a range between 50 and 90 mm.

[0080] The level Ne2 in the drum 4 during those mentioned at least two rinse phases is greater than 100 mm.

[0081] The level Ne2 in the drum 4 during a second rinsing phase is in a range between 100 mm and 140 mm, preferably of the order of 115 mm.

[0082] The water level Ne2 in the drum 4 allows to avoid the wrinkling of the clothes.

[0083] To achieve the amount of water required during the laundry washing stage, the filling of the washing liquid activates the high level of the pressure switch. Then, a complementary filling is carried out during a certain time adapted to each filling phase. The duration of complementary filling depends on the flow of the solenoid valve placed in the hydraulic circuit. In the described embodiment, the flow rate of the solenoid valve is 8 liters per minute.

[0084] This washing method allows to reduce the operating cycle time of the washer and / or dryer by approximately 60% with respect to a classic cotton program, 44% with respect to a classic program that has a wrinkle function and 24% compared to a classic short program.

[0085] In the described embodiment, the cycle time of the washing method is about 37 minutes.

[0086] According to an advantageous feature of the invention, a step of releasing the clothes is carried out after the final spin phase until the user requests the stop of the rotation of the drum 4 to open the drum door. This release stage allows to avoid the wrinkling of the clothes once the washing program is finished. The cadence of rotation of the drum 4 is of pendular type to avoid the tamping of the clothes.

[0087] In an improved embodiment of the invention, water vapor additives are introduced into the drum 4 during at least one step of the method.

[0088] These water vapor additives advantageously limit the wrinkling of clothing.

[0089] The method of washing clothes in a clothes washer described in the present invention allows to improve the result of washing clothes with stains constituted by sebaceous secretions and other human secretions and, above all, decrease wrinkling and wear of clothes

[0090] Of course, the present invention is not limited in any way to the embodiments described and represented, but instead encompasses any variant within the scope of the person skilled in the art and, among others, the use of the method in any apparatus washing

Claims (14)

1. Method of washing clothes with body dirt in a clothes washer comprising a tank (3) filled with liquid from a water inlet, a rotating drum (4) for loading clothes, control means of a laundry program (5), characterized in that it comprises at least the following steps carried out continuously and in the order cited:

-

a prewash phase without detergent use;

-

a wash phase with a wash temperature less than or equal to a threshold (Tmax) of 40 ° C, in which the water level reaches at least a first threshold (Ne1);

-

at least a first intermediate spin phase with an increase in the rotation speed of the drum (4) with intervals to expel the water from the clothes and followed by a peak, the rotation speed being less than or equal to a threshold (V1 ) 250 revolutions per minute;

-

at least two rinse phases in which the water level is greater than a second threshold (Ne2);

-

at least a second intermediate spin phase with an increase in the rotation speed of the drum (4) following a progressive ramp and the rotation speed is less than or equal to a threshold (V2) of 450 revolutions per minute; Y

-

a final spin phase with an increase in the rotation speed of the drum (4) following a progressive ramp and the rotation speed of the drum (4) is less than or equal to a threshold (V3) of 800 revolutions per minute.

2.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 1, characterized in that the level (Ne1) in the drum (4) during the washing phase extends within a range between 50 and 90 mm.

3.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 1 or 2, characterized in that the level (Ne2) in the drum (4) during said at least two rinse phases is greater than 100 mm.

Four.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 3, characterized in that the level (Ne2) in the drum (4) during a second rinsing phase extends within a range between 100 mm and 140 mm , and preferably of the order of 115 mm.

5.

Method of washing clothes in a washing machine and / or clothes dryer according to any of the preceding claims, characterized in that the increase in the speed of rotation of the drum (4) is of the order of 8 revolutions per minute per second during the centrifugation stage final.

6.

Method of washing clothes in a washing machine and / or clothes dryer according to any one of the preceding claims, characterized in that it comprises a cooling stage of the final wash bath that precedes said at least a first intermediate centrifugation phase and at least said said two phases of rinsing, performed with the introduction of cold water into the drum (4).

7.

Method of washing clothes in a washing machine and / or clothes dryer according to any one of the preceding claims, characterized in that water (4) are added to the water during at least one stage of the method.

8.

Method of washing clothes in a washing machine and / or clothes dryer according to any of the preceding claims, characterized in that it comprises a stage of measurement of the level of dirt determined during the prewash phase.

9.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 8, characterized in that the step of measuring the level of dirt is carried out after introducing water into the drum (4).

10.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 8 or 9, characterized in that the measure that allows to determine the level of dirt is a measure of conductivity.

eleven.

Method of washing clothes in a washing machine and / or clothes dryer according to any one of claims 8 to 10, characterized in that the parameters of the washing method phases are applied depending on the level of dirt.

12.

Method of washing clothes in a washing machine and / or clothes dryer according to any of the preceding claims, characterized in that it comprises a step of measuring the level of dirt that is carried out during said at least two rinse phases.

13.

Method of washing clothes in a washing machine and / or clothes dryer according to claim 12, characterized in that it comprises a step of comparing the measurement of the level of dirt in the rinse water with the level of dirt in the water of the supply network.

14.

Washing machine and / or clothes dryer comprising a tank filled with liquid from a water supply outlet, a rotating drum (4) for loading clothes, control means of a laundry program, characterized in that the washing of the Clothes are made according to the washing method according to any of the preceding claims.