EP0649933B1 - Machine à laver avec consommation de détergent contrÔlée et procédé de contrÔle - Google Patents

Machine à laver avec consommation de détergent contrÔlée et procédé de contrÔle Download PDF

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Publication number
EP0649933B1
EP0649933B1 EP94116745A EP94116745A EP0649933B1 EP 0649933 B1 EP0649933 B1 EP 0649933B1 EP 94116745 A EP94116745 A EP 94116745A EP 94116745 A EP94116745 A EP 94116745A EP 0649933 B1 EP0649933 B1 EP 0649933B1
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EP
European Patent Office
Prior art keywords
detergent
washing machine
type
clothes
washing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94116745A
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German (de)
English (en)
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EP0649933A1 (fr
Inventor
Valerio Aisa
Costantino Mariotti
Donato Reginelli
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Whirlpool EMEA SpA
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Merloni Elettrodomestici SpA
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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D06F2103/22—Content of detergent or additives
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the present invention refers to a washing machine, in particular a laundry washing machine of the domestic type.
  • Laundry washing machines having means for the automatic detergent dosage and also the problems being associated to such a function are known, which refer both to powder and liquid detergents.
  • the aim of the present invention is that of indicating how it is possible to realise a laundry washing machine that, in a simple and economic way, allows for the optimisation of the detergent consumption, so allowing to solve the problem of wastage and its negative consequences on the environment.
  • a washing machine is the subject of the present invention, in particular a laundry washing machine, having the characterising features of the annexed claim 1.
  • the laundry washing machine has suitable means for carrying out the three following functions:
  • the washing machine realised according to the present invention has adequate means for estimating the optimal quantity of detergent, being necessary in relation to the characteristics of the washing water and the load of clothes to be washed.
  • the value of the water hardness may be determined by measuring its initial resistivity (i.e. before the introduction of the detergent), by means of a suitable measuring device, for example of the type as that being illustrated in figures 1A and 1B, that actually show possible embodiments of such a device.
  • a suitable measuring device for example of the type as that being illustrated in figures 1A and 1B, that actually show possible embodiments of such a device.
  • FIG 2A represents in graphic form the result of an experimental survey which illustrates the relation existing between the washing water hardness and the resistivity, detected by means of the device of figures 1A and 1B, in presence of a 20°C temperature.
  • Said device for measuring the resistivity of the washing water inside of a laundry washing machine comprises two electrodes, being indicated in figure 1A and 1B with letters A and B.
  • the electrode A is realised through an electrically conductive element, being in direct contact with the washing water, that in the case of figure 1A is the same metallic structure of the machine (tank-basket group), while in the case of figure 1B it is represented as being insulated from the same metallic structure by means of a suitable rubber gasket.
  • the electrode B is realised by means of an electrically conductive element being in direct contact with the washing water and insulated with respect to the electrode A. Said insulation can be obtained as indicated in figure 1B (and, more schematically, also in figure 1A), i.e. inserting the electrode B, which has the form of a small metallic cylinder, in a suitable hydraulic circuit, as a connecting means between two rubber tubes conveying the washing water.
  • the rubber hydraulic circuit being represented in figure 1B is the so-called detergent-recovery circuit (see for example the Italian Patent No. 1.229.878, in the name of the present Applicant).
  • Such a flow of current supplies the charge transitory of the capacitor C and stops when such transitory ends, i.e. when to the terminals of the capacitor C a voltage being equal to the value of E is present.
  • the duration of the charge transitory depends upon the capacity value of the capacitor C and upon the value of the resisitivity of the means (the washing water) through which the charge current flows .
  • the measure of the duration of the charge time can be carried out by way of any commercially available microcontroller mP (with a 4 or 8 bit architecture) being able to measure the time with a good resolution (for example with the resolution of 1 mSec).
  • a digital input of the microcontroller mP being indicated with INP in figure 1A, is connected to the terminals of the capacitor C, while its digital output, indicated with OUT, is used for controlling a transistor Q, being used as a switch, the collector of which is in turn connected to the terminals of the capacitor C.
  • the measure of the charge time of the capacitor C is carried out through the following operations of the microcontroller mP:
  • the total quantity of water supplied in the laundry washing machine according to invention may be determined by the use of a suitable turbine flow meter (for example of the type based on the Hall effect or infrared rays) or, even more conveniently, by using the information concerning the renewal of the washing water level being managed by the electromechanical first level pressure switch, as will be clarified in the following of the present description.
  • a suitable turbine flow meter for example of the type based on the Hall effect or infrared rays
  • the type of the clothes loaded can on the other hand be derived by the study of its dynamics of water absorption.
  • the supplied water quantity and the quantity and/or the type of the clothes loaded are obtained in a simple and economic way, by monitoring the renewal interventions of washing water level, being managed by the electromechanical first level pressure switch, which is practically present on all commercially available laundry washing machines.
  • the first level pressure switch of a laundry washing machine typically has the task of maintaining the water level constant, during the first phase of any washing program, with the double aim of ensuring the heating of the same, in a safe condition (i.e. with the heater always being immersed in the water) and ensuring the presence of a minimum liquid quantity, being necessary for carrying out an effective wash.
  • Such maintenance function of the water level consists in loading other water (by means of the activation of the suitable electrovalve) until the restoration of said level is obtained (which depends upon the calibration characteristics of the pressure switch), at any time that the same falls below a certain quantity (being expressed in mm-H2O and known as differential or hysteresis of the pressure switch) due to the effect of the absorption of the washing liquid by the clothes present inside of the laundry washing machine.
  • figures 3A and 4A which refer respectively to towelling and cotton fabrics, describe the relation which exists between the quantity in weight (being expressed in kg) of fabric introduced in the laundry washing machine and the total time (being expressed in seconds) associated to the different water level renewal operations carried out by the first level pressure switch during the first phase of the washing cycle, until the absorption process of water by the clothes does not reach saturation.
  • the overall duration of the water level renewal phases i.e. the sum of the duration of the single water level renewal operations, (which is directly proportional to the quantity of water supplied, supposing the electrovalve flow rate as being constant) is linked to the weight of clothes to be washed by a simple linear relation.
  • the values being represented in figures 3A and 4A are average values, derived from a high number of experimental tests carried out with different fabric loads.
  • the quality of the information being associated to such average values is made evident by the low dispersion shown by figures 3B and 4B, which relate respectively to towelling and cotton and represent the normalised Gauss function of the sums of the times of the water level renewal operations being associated to the different cloth quantities placed under observation.
  • Figures 6 and 7 represent the result of two experimental surveys, which refer respectively to a washing load of 4 kg of towelling and cotton fabrics; such figures make evident the dynamics of the water level renewal operations over time and express in more intuitive way the quality of the information being associated to the operation of the electromechanical first level pressure switch; for example, it is possible to detect
  • figures 8, 9 and 10 represent the relation of the exponential type (which is typical for process being characterised by saturation) that describes the absorbed water quantity in the time by different quantities of fabric, with regards respectively to towelling, cotton and synthetics.
  • the water quantity is shown (being expressed in litres), supplied during the water level renewal phases of the pressure switch, and on the abscissas axis the sum of times (being expressed in seconds) is reported of the pauses elapsing between one water level renewal operation and another, i.e. the speed with which the clothes absorb the washing liquid.
  • the water supplied in occasion of the first water level renewal operation has the aim to restore up to the initial value (that referring to the instant wherein the first supply ends) the level of the washing liquid, therefore exactly compensating the quantity absorbed by the clothes in the time interval between the end of the first supply and the beginning of the first water level renewal operation itself (abscissas axis).
  • the pressure switch differential is a parameter initially encoded inside the microcontroller's permanent memory of the control unit of the laundry washing machine according to the invention; to such a parameter a part of the information describing the links which exist between the values derivable from the monitoring of the pressure switch is then correlated, this latter information also being encoded in the non volatile memory of the microcontroller.
  • the laundry washing machine according to invention is in itself able to obtain the effective value of the pressure switch differential: such a value is in fact directly proportional to the average duration of the water level renewal operations, which may be obtained by dividing the sum of the times being associated to the different renewal operations for their number.
  • the laundry washing machine is in the condition of measuring constantly, automatically and with precision the differential, or hysteresis, of the pressure switch: in the case of decalibration of the latter (and therefore in the case of discrepancies between the initially imposed hysteresis value and the effective values successively detected), the microcontroller can provide the updating, according to suitable criteria derived from the modern learning software techniques (learning algorithms), of the hysteresis value initially imposed as a project parameter.
  • the above described method for determining the quantity and/or the type of fabric is based on the observation of "natural" water level renewal operations of the pressure switch, i.e. those renewal operations of the level being caused directly by the closure of the empty contact of the pressure switch, which allows to excite the water supply electrovalve.
  • a possible variation of such a method, that brings about analogue results, consists in considering the case of the observation of "forced" renewal operations of the water level, by using the empty contact of the pressure switch solely for sending a criteria to the control system, rather than directly exciting the water supply electrovalve, which will be managed by the same control system by way of a suitable actuator (e.g. a relay).
  • a suitable actuator e.g. a relay
  • control system after having carried out the first water supply keeping the clothes steady, will begin to suitably rotate the basket of the laundry washing machine (for favouring the water absorption by the clothes) and will steadily maintain this situation for an established time T, the duration of which will be such as to allow the pressure switch to reset, i.e. its passage from the full to empty state.
  • control system will provide to excite the water supply electrovalve until the water level is restored, i.e. until the pressure switch has not passed from the full to empty state.
  • the quantity of water that the system must load to restore the initial level will represent the liquid quantity that the fabrics have absorbed during the pause T, i.e. it will give information about the kind of water absorption by the clothes, and therefore on the type of fabric.
  • Such a variation to the method according to invention has thus the advantage of being independent from the characteristics of the pressure switch, in particular from its differential.
  • Figure 13 in fact shows the different average value of the duration of the water level renewal operation associated to two different laundry washing machines (shown in the figure as machine A and machine B) being characterised by two pressure switches having a differential respectively of 23 mm-H2O (machine A) and 20 mm-H2O (machine B).
  • the type of soil and its entity are values which can hardly be measured in a direct way; it is however possible to estimate their value by means of indirect measures, the better known of which are those of the optical type, which are realised by measuring the turbidity of the washing liquid.
  • a alternative method to the optical one, according to a particularly advantageous embodiment of the laundry washing machine subject of the present invention, is based on measuring the water resistivity, that is easily carried out by means of the measuring device described with reference to figures 1A and 1B, and therefore without the necessity of any additional cost.
  • the detection of the entity of the soil, by means of the cited device, has a significant importance in anomalous conditions of soil, for example in the cases wherein the clothes to be washed are very dirty.
  • the information referring to the soil entity could be an input supplied by the user, for example by means of a suitable command device.
  • the knowledge base regarding the estimation of the optimal detergent quantity, is obtained with the aid of experts in the field of washing and by means of experimental surveys, and is encoded, inside the permanent memory of a microcontroller in the form of "rules" (IF...THEN rules) by means of the fuzzy logic techniques.
  • Such a knowledge base contains the criteria for determining the optimal quantity of detergent in function of the value of the quantity being obtained in the above described ways, i.e. in function of the water hardness, the quantity and the type of fabrics to be washed, the entity and the type of soil and finally the quantity of water supplied.
  • the laundry washing machine according to the invention has adequate means for also detecting the quantity of detergent introduced by the user before initiating the washing cycle: such detection means are in great part the same as those being used for the estimation of the optimal detergent quantity.
  • the following information is available to the control unit of the fuzzy logic type:
  • the hardness and the quantity of the water are measured with the above described means; in particular, the water hardness is derived from the measure of the resistivity, through the device of figures 1A and 1B, while the measuring of the water quantity is obtained by means of the information associated to the water level renewal operations carried out by the electromechanical first level pressure switch.
  • the value of the temperature of the washing water is determined by means of a suitable low-cost sensor, for example having a thermo-responsive element of the NTC type, i.e. realised by a mixture of oxides whose resistance changes in an inverse way with respect to the temperature, according to an exponential type law rule.
  • the value of the ionic concentration of the washing liquid after the introduction of the detergent is determined in the same way as the value of the water hardness is determined, as described above, i.e. through measuring the liquid resistivity after the introduction of the detergent.
  • FIG 2B the result of an experimental survey that illustrates the relation existing between the detergent concentration and the resistivity is represented in a graphic form, detected by means of the device of figures 1A and 1B, in presence of a temperature of 20°C and for a water hardness value of 30°F.
  • control system of the laundry washing machine provides, in opportune instants, to measure the resistivity of the washing liquid, by means of the device illustrated in figures 1A and 1B, and to carry out the comparisons eventually necessary of the detected values; such measurements can, for example, occur before that in the washing water the detergent is introduced (for the measure of the water hardness), after that the detergent has been introduced in the washing water (for measuring the ionic concentration of the washing liquid), at the end of the washing phase (for example for having further indications concerning the soil entity), at the end of the rinsing phase (for measuring its quality).
  • the knowledge base contains in this case the criteria for the estimation of the quantity of detergent introduced by the user, in relation to the values obtained in the above described ways, i.e. the value of the hardness, the temperature and the quantity of water and on the basis of the ionic concentration of the washing liquid.
  • the laundry washing machine according to invention has finally suitable interface means for supplying the user with an appropriate feedback concerning the correctness, or not, of the quantity of detergent that has been introduced.
  • control unit of the system has, through the cited sensor devices and its own memorised knowledge, information relating to the estimation of the optimal detergent quantity and to the detection of the quantity of detergent introduced by the user .
  • control unit is equipped with a non volatile memory of the EEPROM type (Electrically Erasable Programmable Memory) and can therefore acquire indications on the user's habits , having regards to the type of the average load of clothes, the quantity and the average type of soil and the prevalent way of using the detergent.
  • EEPROM Electrically Erasable Programmable Memory
  • Such indications are detected over time, wash after wash, through the sensor and detection means cited above, and stored in the aforementioned non volatile memory, which is updated time after time according to opportune criteria derived from modern learning software techniques (learning algorithms).
  • the control unit moreover has a further knowledge base (which is also obtained through the experience of technicians and by means of experimental surveys, and encoded in the permanent memory of the microcontroller of the control unit), containing the criteria for supplying the user, by means of the cited interface means, with a qualitative and/or quantitative judgement on the degree of correctness concerning the quantity of the detergent introduced, which is evaluated on the basis of the comparison between the optimal theoretic quantity and the estimation of that effectively introduced, and taking into account the information on the user's habits, stored over time by the control unit.
  • the interface means or, in other words, the way of informing the user about the correctness, or not, of the detergent dosage he has used can be of different types, depending on the adopted signalling means.
  • a suitable display could be used for showing the degree of distance (in defect or in excess) in respect of the optimal dose of the detergent, being provided in relation to the characteristics of the water and the clothes present in the laundry washing machine.
  • an acoustic signalling device such as one or more buzzers having different sounds or tones, or a vocal synthesiser with messages of the type "DETERGENT IN EXCESS” or “DETERGENT IN DEFECT” or "CORRECT QUANTITY OF DETERGENT”.
  • a display means of a simplified type could be used, based on the use of simple luminous lights or, as an alternative, an index-type electric instrument, for example of the moving-coil type, duly connected to the control system.
  • an excellent method for encoding in a compact form the great quantity of information that the control unit has to deal with is that supplied by the control technology based on the fuzzy logic, which is already widely used in the field of consumer products and, in particular, in the field of household appliances.
  • the knowledge bases of the method according to invention, being obtained as described above, are encoded, inside of the permanent memory of the microcontroller in the form of "rules" (IF...THEN rules) by means of the fuzzy logic techniques.
  • the implementation of the invention has a very low cost; in fact the pressure switch is practically already present on all washing machines (for security and normative reasons), the cost of the microcontroller (if it is not already provided on the laundry washing machine) is in the order of $1; in the same way, the cost of the components of the device for measuring the water resistivity, the temperature sensor and the signalling light is second place concerning the utility of the control system of the machine being the subject of the present invention.

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

Claims (16)

  1. Machine à laver, en particulier machine à laver le linge du type domestique, comprenant des moyens pour détecter la concentration de détergent dans le liquide de lavage, caractérisée en ce qu'elle comprend en outre des moyens pour estimer la concentration optimale de détergent et des moyens pour signaler à l'utilisateur le résultat de la comparaison entre la concentration de détergent détectée et la concentration optimale de détergent estimée.
  2. Machine à laver selon la revendication 1, caractérisée en ce que lesdits moyens pour détecter la concentration de détergent dans le liquide de lavage et/ou lesdits moyens pour estimer la concentration optimale de détergent comprennent :
    des moyens pour détecter la dureté du liquide de lavage et/ou
    des moyens pour détecter la quantité de liquide de lavage fourni et/ou
    des moyens pour détecter la température du liquide de lavage et/ou
    des moyens pour détecter la concentration ionique du liquide de lavage après l'introduction du détergent, et/ou
    des moyens pour détecter la quantité de vêtements à laver et/ou
    des moyens pour détecter le type de tissu à laver et/ou
    des moyens pour détecter l'entité et/ou le type de salissure des vêtements à laver.
  3. Machine à laver selon la revendication 1, caractérisée en ce que lesdits moyens pour signaler à l'utilisateur le résultat de la comparaison entre la concentration de détergent détectée et la concentration de détergent optimale sont du type capable de montrer le degré de différence entre la quantité de détergent optimale et la quantité de détergent détectée, lesdits moyens pour signaler comprenant en particulier des lampes lumineuses et/ou un dispositif d'affichage de type LED ou LCD ou fluorescent, et/ou un dispositif indicateur ayant un index mobile.
  4. Machine à laver selon la revendication 2, caractérisée en ce qu'il est fourni un dispositif pour mesurer la résistivité du liquide de lavage, qui est utilisé pour :
    mesurer la dureté du liquide de lavage et/ou
    détecter la concentration ionique du liquide de lavage après l'introduction du détergent et/ou
    mesurer l'entité et/ou le type de salissure des vêtements,
    la mesure d'un ou plusieurs desdits paramètres étant réalisée en particulier d'une manière indirecte par le biais de la mesure de la résistivité du liquide de lavage.
  5. Machine à laver selon la revendication précédente, caractérisée en ce que ledit dispositif pour mesurer la résistivité du liquide de lavage comprend deux électrodes (A, B) en contact avec le liquide de lavage et insérées dans le circuit de charge d'un condensateur (C), et des moyens (mP, Q) pour mesurer la durée de charge (Tc) dudit condensateur (C), la mesure de la résistivité étant obtenue d'une manière indirecte par le biais de la mesure de ladite durée de charge (Tc).
  6. Machine à laver selon la revendication 2, caractérisée en ce que lesdits moyens pour détecter la quantité de liquide fourni comprennent :
    un débitmètre à turbine et/ou
    un commutateur de pression, en particulier du type électromécanique, la détection de ladite quantité de liquide étant obtenue par surveillance, par le biais de moyens de commande (mP), des interventions pour rétablir le niveau de liquide de lavage réalisées par ledit commutateur de pression.
  7. Machine à laver selon la revendication 2, caractérisée en ce que lesdits moyens pour détecter la quantité de vêtements à laver comprennent des moyens pour mesurer le courant absorbé par le moteur de la machine pour mettre en mouvement le panier contenant les vêtements, et/ou des moyens pour mesurer l'énergie nécessaire pour passer d'un premier état inertiel, défini par une certaine vitesse du panier contenant les vêtements, à un second état inertiel défini par une vitesse différente du même panier.
  8. Machine à laver selon la revendication 2, caractérisée en ce que lesdits moyens pour détecter le type de vêtements à laver comprennent un capteur de niveau, la détection du type de vêtements à laver étant obtenue par surveillance, par le biais de moyens de commande (mP), des interventions pour rétablir le niveau de liquide de lavage commandées par ledit capteur.
  9. Machine à laver selon la revendication précédente, caractérisée en ce que ledit capteur de niveau est un commutateur de premier niveau électromécanique et en ce que les informations concernant le type de tissu sont obtenues par mesure de la pause qui s'écoule entre le premier apport de liquide de lavage dans la machine à laver le linge et le premier rétablissement du niveau de liquide réalisé par le commutateur de pression.
  10. Machine à laver selon la revendication 2, caractérisée en ce que lesdits moyens pour détecter la quantité de vêtements à laver comprennent un capteur de niveau, la détection de ladite quantité de vêtements à laver étant obtenue par surveillance, par le biais de moyens de commande (mP), des interventions pour rétablir le niveau de liquide de lavage commandées par ledit capteur de niveau.
  11. Machine à laver selon la revendication précédente, caractérisée en ce que ledit capteur de niveau est un commutateur de pression de premier niveau électromécanique et en ce que les informations concernant la quantité de vêtements sont obtenues par mesure de la durée totale des différentes opérations de rétablissement du niveau de liquide de lavage, réalisées par le commutateur de pression dans la première phase du lavage, sur la base du type de tissu.
  12. Machine à laver selon une ou plusieurs des revendications précédentes, caractérisée en ce qu'elle comprend un microcontrôleur (mP) qui, en particulier, réalise le comptage de ladite durée de charge dudit condensateur (C) et/ou la surveillance des opérations de rétablissement du niveau de liquide de lavage dudit commutateur de pression, et des moyens de mémoire permanente (ROM) et/ou des moyens de mémoire non volatile (EEPROM) associés audit microcontrôleur (mP), dans lesdits moyens de mémoire étant codés, en particulier sous forme de "règles", les critères pour :
    déterminer la quantité de détergent introduite par l'utilisateur, en fonction de la valeur de la quantité de liquide fourni, et/ou de sa dureté, et/ou de sa température, et/ou de sa concentration ionique, et/ou
    déterminer la quantité optimale de détergent en fonction de la valeur de la quantité de liquide fourni, et/ou de sa dureté, et/ou de la quantité, et/ou du type de vêtements à laver, et/ou de l'entité/type de salissure ; et/ou
    fournir à l'utilisateur des informations concernant le degré de caractère correct de la quantité de détergent introduit, évalué sur la base de la comparaison entre la quantité optimale et la quantité effectivement introduite.
  13. Machine à laver selon la revendication précédente, caractérisée en ce que ledit microcontrôleur et lesdits moyens de mémoire non volatile (EEPROM) sont capables d'acquérir des informations sur les habitudes de l'utilisateur, en particulier concernant le type moyen de charge de linge, la quantité moyenne et le type de salissure et la manière d'utiliser le détergent.
  14. Machine à laver selon la revendication précédente, caractérisée en ce que lesdites informations sont détectées au cours du temps, lavage après lavage, par lesdits moyens pour détecter la dureté du liquide de lavage, et/ou la quantité de liquide fournie, et/ou la température du liquide, et/ou la concentration ionique du liquide de lavage après l'introduction du détergent, et sont stockées dans une mémoire non volatile (EEPROM) appropriée, qui est mise à jour au cours du temps, en particulier selon des critères déduits de techniques logicielles d'apprentissage (algorithmes d'apprentissage).
  15. Procédé pour la commande de la consommation de détergent dans une machine à laver, en particulier une machine à laver le linge à usage domestique, caractérisé par les étapes suivantes :
    estimation, en relation avec les caractéristiques de l'eau de lavage, de la quantité et/ou du type de vêtements à laver, et/ou de l'entité de la salissure, de la quantité optimale de détergent qui est nécessaire pour réaliser un lavage efficace ;
    détection de la quantité de détergent effectivement introduite par l'utilisateur au début d'un cycle de lavage ;
    comparaison de la quantité optimale de détergent avec la quantité de détergent effectivement introduite ;
    signalisation du résultat de la comparaison entre la concentration de détergent détectée et la concentration optimale à l'utilisateur, en particulier pour éduquer progressivement l'utilisateur, lavage après lavage, concernant une utilisation plus correcte du détergent.
  16. Procédé selon la revendication précédente, caractérisée en ce que l'estimation de la quantité optimale de détergent est réalisée en fonction de la dureté du liquide de lavage, et/ou de la quantité de liquide fourni, et/ou de la quantité des vêtements à laver, et/ou de l'entité, et/ou du type de salissure des vêtements à laver et en ce que la détection de la quantité de détergent introduite est réalisée en fonction de la dureté et du liquide de lavage, et/ou de la quantité de liquide fourni, et/ou de la concentration ionique du liquide de lavage après introduction du détergent.
EP94116745A 1993-10-26 1994-10-24 Machine à laver avec consommation de détergent contrÔlée et procédé de contrÔle Expired - Lifetime EP0649933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO930796 1993-10-26
ITTO930796A IT1261006B (it) 1993-10-26 1993-10-26 Macchina di lavaggio a consumo di detersivo controllato, e relativo metodo di controllo.

Publications (2)

Publication Number Publication Date
EP0649933A1 EP0649933A1 (fr) 1995-04-26
EP0649933B1 true EP0649933B1 (fr) 1999-03-17

Family

ID=11411826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116745A Expired - Lifetime EP0649933B1 (fr) 1993-10-26 1994-10-24 Machine à laver avec consommation de détergent contrÔlée et procédé de contrÔle

Country Status (4)

Country Link
EP (1) EP0649933B1 (fr)
DE (1) DE69417146T2 (fr)
ES (1) ES2130329T3 (fr)
IT (1) IT1261006B (fr)

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US7114209B2 (en) 2001-12-12 2006-10-03 The Procter & Gamble Company Method for cleaning a soiled article
DE102007041069A1 (de) 2007-08-30 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Erkennung von Weichspüler in einer Waschmaschine sowie hierzu geeignete programmgesteuerte Waschmaschine
CN103339310A (zh) * 2011-01-25 2013-10-02 大宇电子株式会社 用于警告液体清洁剂的剩余量的方法
US9481957B2 (en) 2009-03-16 2016-11-01 BSH Hausgeräte GmbH Method for optimizing a rinsing phase in a washing machine and washing machine suitable therefor

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IT1304664B1 (it) 1998-09-30 2001-03-28 Merloni Elettrodomestici Spa Sistema per la programmazione di un apparato elettrodomestico acontrollo elettronico.
DE10145601A1 (de) * 2001-04-27 2002-10-31 Aweco Appliance Sys Gmbh & Co Haushaltsmaschine
DE102007036800A1 (de) * 2007-05-29 2008-12-04 Herbert Kannegiesser Gmbh Verfahren zur Nassbehandlung von Wäschestücken
DE102007046555A1 (de) * 2007-09-28 2009-04-02 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und eine Einrichtung zum Verwerten von Informationen über ein Behandlungsmittel in einer Wäschebehandlungsmaschine
WO2009066941A2 (fr) * 2007-11-20 2009-05-28 Lg Electronics Inc. Procédé et appareil pour traiter le linge
US8388695B2 (en) 2008-07-01 2013-03-05 Whirlpool Corporation Apparatus and method for controlling laundering cycle by sensing wash aid concentration
US8266748B2 (en) 2008-07-01 2012-09-18 Whirlpool Corporation Apparatus and method for controlling bulk dispensing of wash aid by sensing wash aid concentration
US8397328B2 (en) 2008-07-01 2013-03-19 Whirlpool Corporation Apparatus and method for controlling concentration of wash aid in wash liquid
US9243987B2 (en) 2013-05-01 2016-01-26 Whirlpool Corporation Method of determining fabric type of a laundry load in a laundry treating appliance
CN109183357A (zh) * 2018-10-23 2019-01-11 珠海格力电器股份有限公司 一种清洗方法及洗衣机
CN111434838A (zh) * 2019-01-11 2020-07-21 青岛海尔洗衣机有限公司 一种洗衣机的控制方法及洗衣机
CN112176638B (zh) * 2019-06-14 2023-09-12 青岛海尔洗衣机有限公司 一种洗衣机的控制方法
CN113930940B (zh) * 2020-06-29 2024-01-12 青岛海尔洗衣机有限公司 洗涤剂投放控制方法、装置、设备及存储介质

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DE3002786C2 (de) * 1980-01-26 1982-08-26 Miele & Cie GmbH & Co, 4830 Gütersloh Verfahren und Anordnung zur Programmsteuerung einer Waschmaschine
EP0110999A4 (fr) * 1982-05-10 1985-04-24 Matsushita Electric Ind Co Ltd Machine a laver.
DE4122307A1 (de) * 1991-07-05 1993-01-14 Licentia Gmbh Verfahren zur ermittlung von programmsteuerungs-parametern fuer haushalt-waschmaschinen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7114209B2 (en) 2001-12-12 2006-10-03 The Procter & Gamble Company Method for cleaning a soiled article
DE102007041069A1 (de) 2007-08-30 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Erkennung von Weichspüler in einer Waschmaschine sowie hierzu geeignete programmgesteuerte Waschmaschine
DE102007041069B4 (de) * 2007-08-30 2017-01-12 BSH Hausgeräte GmbH Verfahren zur Erkennung von Weichspüler in einer Waschmaschine sowie hierzu geeignete programmgesteuerte Waschmaschine
US9481957B2 (en) 2009-03-16 2016-11-01 BSH Hausgeräte GmbH Method for optimizing a rinsing phase in a washing machine and washing machine suitable therefor
CN103339310A (zh) * 2011-01-25 2013-10-02 大宇电子株式会社 用于警告液体清洁剂的剩余量的方法
CN103339310B (zh) * 2011-01-25 2016-05-18 大宇电子株式会社 用于警告液体清洁剂的剩余量的方法

Also Published As

Publication number Publication date
DE69417146T2 (de) 1999-08-12
ES2130329T3 (es) 1999-07-01
ITTO930796A1 (it) 1995-04-26
ITTO930796A0 (it) 1993-10-26
EP0649933A1 (fr) 1995-04-26
IT1261006B (it) 1996-04-29
DE69417146D1 (de) 1999-04-22

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