EP1029962B1 - Method for optimizing the working cycle of a dishwasher and a dishwasher using the method - Google Patents

Method for optimizing the working cycle of a dishwasher and a dishwasher using the method Download PDF

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Publication number
EP1029962B1
EP1029962B1 EP00400424A EP00400424A EP1029962B1 EP 1029962 B1 EP1029962 B1 EP 1029962B1 EP 00400424 A EP00400424 A EP 00400424A EP 00400424 A EP00400424 A EP 00400424A EP 1029962 B1 EP1029962 B1 EP 1029962B1
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European Patent Office
Prior art keywords
water
cycle
compartment
measuring
remaining
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EP00400424A
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German (de)
French (fr)
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EP1029962A1 (en
Inventor
Benoít THOMSON-CSF Propriété Intell. Gailledrat
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Brandt Industries SAS
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Brandt Industries SAS
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    • 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
    • A47L15/42—Details
    • A47L15/4244—Water-level measuring or regulating arrangements
    • 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
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0026—Rinsing phases
    • 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
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/09—Water level
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the present invention relates to a dishwasher equipped with a washing bath control method of to optimize the rinsing cycle.
  • the invention does not attempt to measure the turbidity of water to wash and even less to rinse next but proposes to measure the residual amount of water at the end of the wash, which exceeds a certain threshold is the unmistakable indicator that the dilution factor (laundry + microdheets) is not enough, to get a product to wash irreproachable. In this case, the rinse is automatically increased by one see several rinses.
  • the subject of the invention is a process optimizing the operating cycle of a dishwasher as described in claim 1.
  • the measurement of the quantity of water remaining at the bottom of the tank is a direct measurement performed by height direct manometer for example by an analog manometer (piezoelectric Or other).
  • the step of measuring the amount of water remaining can be done differentially by volume measurement water at the beginning of the rinsing cycle to reach a volume in the tank bottom, predetermined standard.
  • the measure may relate to the water supply time or be performed using a flowmeter to measure the complementary volume water to bring to reach a standard level.
  • the invention also relates to a dishwasher using the method of the invention.
  • This apparatus includes a filled tank in liquid from a water intake comprising a solenoid valve and means for closing the solenoid valve when the amount of water necessary for the operation of the wash cycle or the rinse cycle is equal to a predetermined amount of water and a cycle timer of washing and rinsing cycle characterized in that it comprises means to measure the quantity of water remaining in the tank after a draining operation at the end of the cycle of washing and means for controlling the programmer to schedule at least one additional rinse in the rinse cycle when said remaining amount of water is greater than a threshold value.
  • any means of precise measurement of level of water which may include a pressure gauge, or a float.
  • the means for closing the solenoid valve may be of the type switch.
  • a dishwasher 1 schematized in Figure 1, comprises a body 2, a tank 3 in which are mounted dish baskets 4, 5, reels 6, 7 and a water level regulating device 10.
  • water level regulating device 10 can be, in known manner, consisting of an air pressure switch whose chamber, delimited by a membrane flexible, is connected to the compression chamber, bell, disposed in the tank of the appliance.
  • the diaphragm of the pressure switch moves under the effect of pressure variations relative to the atmosphere acts on an electrical contactor that gives the level signal reached, to automatism.
  • This level reached is not necessarily chosen necessarily to match a sufficient volume of water at the bottom of the tank to operate the unit in a normal (or nominal) manner.
  • a variant of the invention in this case may be: provided that the detection the water level is fine enough to control a volume of water accurate, compatible with the operating thresholds of the present process, can match the level reached with the volume of water at the bottom of the tank just necessary, and sufficient, to a proper operation of the device.
  • the water level regulating device 10 thus makes it possible to obtain a level well determined, necessary for reasons of safety and economy of water.
  • the dishwasher also has a drain pump to renew the liquid at the bottom of the tank.
  • the bottom part of the tank comprises a recycling pump provided with a pipe of water guidance discharged to the lower sprinkler and a pump drain connected to an evacuation pipe. Filters and microfilters recycle clean water to supply the closed circuit with reels so as to save the volume of water introduced since outside.
  • washing cycles water + laundry
  • Rinsing cycles water only
  • Figure 2 schematizes the main steps of an example of process according to the invention.
  • the first step concerns a standard wash cycle C I.
  • the second step corresponds to a draining operation V of the tank.
  • the third step corresponds to the first phase of the rinsing cycle C R , ie to the first filling operation of the tank with clean rinsing water R 1 .
  • this operation it is measured in parallel the amount of water needed Q n to reach the standard amount of water Q R to bring into the tank to reach a standard level N R predetermined.
  • the rinsing cycle is followed by a drying cycle C s after a new drain V.
  • the rinsing cycle is a standard cycle.
  • the standard rinsing cycle can be limited to either a single rinse R 1 as illustrated in Figure 2, or two rinsing phases R 1 and R 2 . In the latter case, the rinse R 2 will be a hot bath.
  • a second additional rinse R i2 can be programmed.
  • the dishwasher is equipped with a sensor so as to precisely measure the volume of water to be added to the first rinsing bath after draining the last washing bath.
  • the volumes of water corresponding to the preset level N R can for a dishwasher range from 1 to 6 liters
  • the threshold Q S1 can be set to an order of magnitude of 0.5 liter and the cumulative accuracy of two means of measurement must be better than half the value of the threshold, ie for example ⁇ 0.15 liter for each.
  • the information provided by the sensor directly informs the programmer who then automatically selects the optimal number of rinses.
  • the sensor can be a small flow meter placed on the line water supply to the home appliance.
  • Measuring the volume of water to be added during the first rinse to complete the amount of water up to the standard level of the first rinse bath can be performed also through a counter that informs about the water supply time, done at regulated flow on arrival of water. If this time is less than a critical threshold, predefined, the automation of the machine triggers in the course of the cycle at least one rinse additional.

Description

La présente invention concerne un lave-vaisselle équipé d'un procédé de contrôle du bain de lavage de manière à optimiser le cycle de rinçage.The present invention relates to a dishwasher equipped with a washing bath control method of to optimize the rinsing cycle.

De manière générale, il peut arriver qu'au cours d'un cycle de fonctionnement de ce type d'appareil, la qualité de lavage se dégrade occasionnellement et aléatoirement sans que l'utilisateur ne puisse leur attribuer une cause. C'est notamment le cas si une trop grande quantité de mousse due au produit de lavage se développe pendant le cycle de lavage. Ceci peut se produire en cas de surdosage de lessive ou si une combinaison inopportune de certaines lessives avec un certain type de résidu alimentaire se forme ; il peut s'agir par exemple de certaines lessives avec une quantité importante de jaune d'oeuf.In general, it can happen that during a cycle of operation of this type of device, the washing quality deteriorates occasionally and randomly without the user being able to attribute a cause. This is particularly the case if too much foam due to the washing product develops during the wash cycle. This can happen in case of laundry overdose or if a combination inappropriate some laundry with some type of food residue forms ; it may be for example some laundry with a quantity important of egg yolk.

Les procédés actuels de programmation du cycle de lavage et de rinçage (voir p. ex. DE-A-196 38 514) sont basés sur la mesure d'un degré de salissure. Cette mesure peut être effectuée par turbidimétrie de l'eau en utilisant des moyens optiques, mais pour résoudre le problème précité ce type de mesure n'est pas adapté car la mousse qui se forme et qui a alors du mal à être évacuée lors de la vidange emprisonne une quantité de salissures difficile à détecter par turbidimétrie.Current processes for programming the wash cycle and rinsing (see eg DE-A-196 38 514) are based on measuring a degree of soiling. This measure can be performed by turbidimetry of water using means optical but to solve the problem mentioned above this type of measurement is not suitable because the foam that forms and then has difficulty to be evacuated when emptying traps a quantity of dirt difficult to detect by turbidimetry.

C'est pourquoi l'invention ne cherche pas à mesurer la turbidité de l'eau au lavage et encore moins au rinçage suivant mais propose de mesurer la quantité résiduelle d'eau en fin de lavage, qui au delà d'un certain seuil constitue l'indicateur indubitable que le facteur de dilution (lessive + microdéchets) n'est pas suffisant, pour obtenir un produit à laver irréprochable. Dans ce cas, le rinçage est automatiquement augmenté d'un voir plusieurs rinçages.This is why the invention does not attempt to measure the turbidity of water to wash and even less to rinse next but proposes to measure the residual amount of water at the end of the wash, which exceeds a certain threshold is the unmistakable indicator that the dilution factor (laundry + microdheets) is not enough, to get a product to wash irreproachable. In this case, the rinse is automatically increased by one see several rinses.

L'intérêt d'adapter le nombre de rinçages en fonction d'un paramètre de vidange plus ou moins complète en fin de cycle de lavage permet de plus d'éviter la saturation des filtres usuels de ce type d'appareil électroménager. The interest of adapting the number of rinses according to a more or less complete emptying parameter at the end of the wash cycle also avoids the saturation of the usual filters of this type of device home appliance.

Plus précisément l'invention a pour objet un procédé d'optimisation du cycle de fonctionnement d'un lave-vaisselle tel que décrit dans la revendication 1.More precisely, the subject of the invention is a process optimizing the operating cycle of a dishwasher as described in claim 1.

Selon une variante de l'invention, la mesure de la quantité d'eau restante en fond de cuve est une mesure directe effectuée par hauteur manométrique directe par exemple par un manomètre analogique (piézo-électrique ou autre).According to a variant of the invention, the measurement of the quantity of water remaining at the bottom of the tank is a direct measurement performed by height direct manometer for example by an analog manometer (piezoelectric Or other).

Selon une autre variante, l'étape de mesure de la quantité d'eau restante peut être effectuée de manière différentielle par mesure du volume d'eau à apporter en début de cycle de rinçage pour atteindre un volume dans le fond de cuve, prédéterminé standard.According to another variant, the step of measuring the amount of water remaining can be done differentially by volume measurement water at the beginning of the rinsing cycle to reach a volume in the tank bottom, predetermined standard.

La mesure peut porter sur le temps d'alimentation en eau ou être effectuée à l'aide d'un débitmètre pour mesurer le volume complémentaire d'eau à apporter pour atteindre un niveau standard.The measure may relate to the water supply time or be performed using a flowmeter to measure the complementary volume water to bring to reach a standard level.

L'invention a aussi pour objet un lave-vaisselle mettant en oeuvre le procédé de l'invention.The invention also relates to a dishwasher using the method of the invention.

Cet appareil comprend une cuve remplie en liquide à partir d'une prise d'arrivée d'eau comprenant une électrovanne et des moyens pour fermer l'électrovanne lorsque la quantité d'eau nécessaire au fonctionnement du cycle de lavage ou du cycle de rinçage est égale à une quantité d'eau prédéterminée et un programmateur de cycle de lavage et de cycle de rinçage caractérisé en ce qu'il comprend des moyens pour mesurer la quantité d'eau restante dans la cuve après une opération de vidange en fin de cycle de lavage et des moyens pour commander le programmateur de manière à programmer au moins un rinçage supplémentaire dans le cycle de rinçage lorsque ladite quantité d'eau restante est supérieure à une valeur de seuil.This apparatus includes a filled tank in liquid from a water intake comprising a solenoid valve and means for closing the solenoid valve when the amount of water necessary for the operation of the wash cycle or the rinse cycle is equal to a predetermined amount of water and a cycle timer of washing and rinsing cycle characterized in that it comprises means to measure the quantity of water remaining in the tank after a draining operation at the end of the cycle of washing and means for controlling the programmer to schedule at least one additional rinse in the rinse cycle when said remaining amount of water is greater than a threshold value.

Pour cela, on peut utiliser tout moyen de mesure précise de niveau d'eau, pouvant comprendre un manomètre, ou bien encore un flotteur. For this purpose, any means of precise measurement of level of water, which may include a pressure gauge, or a float.

Les moyens pour fermer l'électrovanne peuvent être de type pressostat.The means for closing the solenoid valve may be of the type switch.

L'invention sera mieux comprise et d'autres avantages apparaítront à la lecture de la description qui va suivre donnée à titre non limitatif et grâce aux figures annexées parmi lesquelles :

  • la Figure 1 représente une vue schématique et partielle d'un lave-vaisselle ;
  • la Figure 2 illustre les principales étapes d'un exemple de procédé selon l'invention.
The invention will be better understood and other advantages will become apparent on reading the following description given by way of non-limiting example and with reference to the appended figures in which:
  • Figure 1 shows a schematic and partial view of a dishwasher;
  • Figure 2 illustrates the main steps of an exemplary method according to the invention.

De manière générale un lave-vaisselle 1, schématisé en Figure 1, comprend une carrosserie 2, une cuve 3 dans laquelle sont montés des paniers à vaisselle 4, 5, des moulinets d'arrosage 6, 7 et un dispositif de régulation de niveau d'eau 10. Ce dispositif de régulation du niveau d'eau 10 peut être, de manière connue, constitué d'un pressostat à air dont la chambre, délimitée par une membrane souple, est reliée à la chambre de compression, en cloche, disposée dans la cuve de l'appareil électroménager. La membrane du pressostat qui se déplace sous l'effet des variations de pression relative à l'atmosphère agit sur un contacteur 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 de façon normale (ou nominale). Une variante de l'invention, dans ce cas peut être : à condition que la détection du niveau d'eau soit suffisamment fine pour contrôler un volume d'eau précis, compatible avec les seuils de fonctionnement du présent procédé, on peut faire coïncider le niveau atteint avec le volume d'eau en fond de cuve juste nécessaire, et suffisant, à un bon fonctionnement de l'appareil. Le dispositif de régulation du niveau d'eau 10 permet ainsi d'obtenir un niveau bien déterminé, nécessaire pour des raisons de sécurité et d'économie d'eau.Generally a dishwasher 1, schematized in Figure 1, comprises a body 2, a tank 3 in which are mounted dish baskets 4, 5, reels 6, 7 and a water level regulating device 10. water level regulating device 10 can be, in known manner, consisting of an air pressure switch whose chamber, delimited by a membrane flexible, is connected to the compression chamber, bell, disposed in the tank of the appliance. The diaphragm of the pressure switch moves under the effect of pressure variations relative to the atmosphere acts on an electrical contactor that gives the level signal reached, to automatism. This level reached is not necessarily chosen necessarily to match a sufficient volume of water at the bottom of the tank to operate the unit in a normal (or nominal) manner. A variant of the invention, in this case may be: provided that the detection the water level is fine enough to control a volume of water accurate, compatible with the operating thresholds of the present process, can match the level reached with the volume of water at the bottom of the tank just necessary, and sufficient, to a proper operation of the device. The water level regulating device 10 thus makes it possible to obtain a level well determined, necessary for reasons of safety and economy of water.

Le lave-vaisselle comporte par ailleurs une pompe de vidange permettant de renouveler le liquide au fond de la cuve. La partie inférieure de la cuve comporte une pompe de recyclage munie d'une canalisation de guidage d'eau refoulée vers le moulinet d'arrosage inférieur et une pompe de vidange reliée à une conduite d'évacuation. Des filtres et microfiltres permettent de recycler de l'eau propre pour alimenter en circuit fermé les moulinets de manière à économiser le volume d'eau introduit depuis l'extérieur.The dishwasher also has a drain pump to renew the liquid at the bottom of the tank. The bottom part of the tank comprises a recycling pump provided with a pipe of water guidance discharged to the lower sprinkler and a pump drain connected to an evacuation pipe. Filters and microfilters recycle clean water to supply the closed circuit with reels so as to save the volume of water introduced since outside.

De manière générale les cycles de lavages (eau + lessive) et les cycles de rinçage (eau seule) sont séquencés en bains par des opérations de vidange durant lesquelles seule la pompe de vidange est actionnée.In general, the washing cycles (water + laundry) and the Rinsing cycles (water only) are sequenced in baths by operations during which only the drain pump is actuated.

La Figure 2 schématise les principales étapes d'un exemple de procédé selon l'invention.Figure 2 schematizes the main steps of an example of process according to the invention.

La première étape concerne un cycle standard de lavage CI.The first step concerns a standard wash cycle C I.

La seconde étape correspond à une opération de vidange V de la cuve.The second step corresponds to a draining operation V of the tank.

La troisième étape correspond à la première phase du cycle de rinçage CR, soit à la première opération de remplissage de la cuve en eau propre de rinçage R1. Lors de cette opération, on mesure en parallèle la quantité d'eau nécessaire Qn pour atteindre la quantité d'eau standard QR à apporter dans la cuve pour atteindre un niveau standard NR prédéterminé. La quantité Qi = QR - Qn correspond à la quantité d'eau restante dans la cuve après vidange. Si Qi est supérieure à une valeur seuil Qs1, alors le cycle de rinçage est automatiquement programmé pour un rinçage supplémentaire Ri1.The third step corresponds to the first phase of the rinsing cycle C R , ie to the first filling operation of the tank with clean rinsing water R 1 . During this operation, it is measured in parallel the amount of water needed Q n to reach the standard amount of water Q R to bring into the tank to reach a standard level N R predetermined. The quantity Q i = Q R - Q n corresponds to the quantity of water remaining in the tank after emptying. If Q i is greater than a threshold value Q s1 , then the rinse cycle is automatically programmed for an additional rinse R i1 .

De manière classique le cycle de rinçage est suivi par un cycle de séchage Cs après une nouvelle vidange V. Dans le cas où la quantité Qi est inférieure à la valeur seuil Qs1, alors le cycle de rinçage est un cycle standard. Le cycle de rinçage standard peut être limité soit à un seul rinçage R1 comme illustré en Figure 2, soit à deux phases de rinçage R1 et R2. Dans ce dernier cas, le rinçage R2 sera un bain chaud.In a conventional manner the rinsing cycle is followed by a drying cycle C s after a new drain V. In the case where the quantity Q i is lower than the threshold value Q s1 , then the rinsing cycle is a standard cycle. The standard rinsing cycle can be limited to either a single rinse R 1 as illustrated in Figure 2, or two rinsing phases R 1 and R 2 . In the latter case, the rinse R 2 will be a hot bath.

De même si Qi est supérieure à une quantité seuil Qs2 plus élevée que Qs1, un second rinçage supplémentaire Ri2 peut être programmé.Similarly, if Q i is greater than a threshold quantity Q s2 greater than Q s1 , a second additional rinse R i2 can be programmed.

Dans le cadre de l'invention, le lave-vaisselle est équipé d'un capteur de manière à mesurer précisément le volume d'eau à ajouter au premier bain de rinçage après avoir vidangé le dernier bain de lavage. Typiquement, les volumes d'eau correspondant au niveau NR préétabli peuvent pour un lave-vaisselle s'échelonner de 1 à 6 litres, le seuil QS1 peut être fixé à un ordre de grandeur de 0,5 litre et la précision cumulée des deux moyens de mesure doit être meilleure que la moitié de la valeur du seuil, soit par exemple ± 0,15 litre pour chaque.In the context of the invention, the dishwasher is equipped with a sensor so as to precisely measure the volume of water to be added to the first rinsing bath after draining the last washing bath. Typically, the volumes of water corresponding to the preset level N R can for a dishwasher range from 1 to 6 liters, the threshold Q S1 can be set to an order of magnitude of 0.5 liter and the cumulative accuracy of two means of measurement must be better than half the value of the threshold, ie for example ± 0.15 liter for each.

L'information fournie par le capteur renseigne directement le programmateur qui sélectionne alors automatiquement le nombre optimal de rinçages. Le capteur peut être un petit débimètre déposé sur la ligne d'alimentation en eau de l'appareil ménager.The information provided by the sensor directly informs the programmer who then automatically selects the optimal number of rinses. The sensor can be a small flow meter placed on the line water supply to the home appliance.

La mesure du volume d'eau à ajouter lors du premier rinçage pour compléter la quantité d'eau jusqu'à atteindre le niveau standard du premier bain de rinçage peut être effectuée également grâce à un compteur qui renseigne sur le temps d'alimentation en eau, fait à débit régulé en arrivée d'eau. Si ce temps est inférieur à un seuil critique, prédéfini, l'automatisme de la machine déclenche dans le cours du cycle au moins un rinçage supplémentaire.Measuring the volume of water to be added during the first rinse to complete the amount of water up to the standard level of the first rinse bath can be performed also through a counter that informs about the water supply time, done at regulated flow on arrival of water. If this time is less than a critical threshold, predefined, the automation of the machine triggers in the course of the cycle at least one rinse additional.

Claims (8)

  1. Method of optimising the operating cycle of a dishwasher comprising a compartment (3) filled with liquid from a water feed connection, comprising a wash cycle (C1) followed by a rinse cycle (CR), characterised in that it comprises the following steps:
    measuring the quantity of water (Qi) remaining in the compartment after a drainage operation (V) at the end of the wash cycle (C1); and
    programming at least one supplementary rinsing (Ri1, Ri2) in a rinse cycle (CR) when the said remaining quantity of water (Qi) is above a threshold value (QS1).
  2. Method of optimising the operating cycle of a dishwasher according to Claim 1, characterised in that the step of measuring the remaining quantity of water (Qi) is performed differentially by measuring the volume of water (QN) to be added at the start of the rinse cycle (CR) in order to attain a standard predetermined volume (QR) in the bottom of the compartment.
  3. Method of optimising the operating cycle of a dishwasher according to Claim 2, characterised in that the differential measurement step is performed in the presence of a pressure switch (10) which measures a manometric head of water.
  4. Dishwasher (1) comprising a compartment (3) filled with liquid from a water feed connection comprising a solenoid valve and means for closing the solenoid valve when the quantity of water necessary for the functioning of the wash cycle (C1) or of the rinse cycle (CR) is equal to a predetermined quantity of water and a wash cycle and rinse cycle programmer, characterised in that it comprises means for measuring the quantity of water (Qi) remaining in the compartment after a drainage operation (V) at the end of the wash cycle (C1) and means for controlling the programmer so as to programme at least one supplementary rinsing (Ri1, Ri2) in the rinse cycle (CR) when the said remaining quantity of water (Qi) is above a threshold value (QS1).
  5. Dishwasher according to Claim 4, characterised in that the means for closing the solenoid valve comprise a pressure switch (10).
  6. Dishwasher according to one of Claims 4 or 5, characterised in that the means for measuring the quantity of water (Qi) remaining in the compartment after a drainage operation (V) at the end of washing comprise means of the analogue pressure gauge type.
  7. Dishwasher according to one of Claims 4 or 5, characterised in that the means for measuring the quantity of water (Qi) remaining in the compartment after a drainage operation (V) at the end of washing comprise means for measuring the time taken for feeding water to the compartment during the first bath of the rinse cycle.
  8. Dishwasher according to one of Claims 4 or 5, characterised in that the means for measuring the quantity of water (Qi) remaining in the compartment after a drainage operation (V) at the end of washing comprise a flow sensor for measuring the additional volume of water (Qn) to be supplied in order to supplement the bottom-of-compartment volume to a predetermined level (NR), during the first bath of the rinse cycle.
EP00400424A 1999-02-16 2000-02-15 Method for optimizing the working cycle of a dishwasher and a dishwasher using the method Expired - Lifetime EP1029962B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901860 1999-02-16
FR9901860A FR2789568B1 (en) 1999-02-16 1999-02-16 METHOD FOR OPTIMIZING THE OPERATING CYCLE OF A WASHING HOUSEHOLD APPLIANCE AND APPARATUS USING THE SAME

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EP1029962A1 EP1029962A1 (en) 2000-08-23
EP1029962B1 true EP1029962B1 (en) 2005-08-17

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EP00400424A Expired - Lifetime EP1029962B1 (en) 1999-02-16 2000-02-15 Method for optimizing the working cycle of a dishwasher and a dishwasher using the method

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EP (1) EP1029962B1 (en)
DE (1) DE60021930T2 (en)
ES (1) ES2245926T3 (en)
FR (1) FR2789568B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045151C2 (en) * 2000-09-13 2002-09-26 Whirlpool Co Process for the delivery of rinse aid in a dishwasher
DE10253017B4 (en) * 2002-11-14 2004-09-09 Whirlpool Corp., Benton Harbor Method for operating a dishwasher with a central control unit
DE10253025B3 (en) 2002-11-14 2004-07-22 Whirlpool Corp., Benton Harbor Method for operating a dishwasher with a central control unit and turbidity measurement
DE10259736A1 (en) * 2002-12-19 2004-07-08 BSH Bosch und Siemens Hausgeräte GmbH Rinsing process for a dishwasher and dishwasher
CN114145686B (en) * 2021-11-22 2023-09-12 珠海格力电器股份有限公司 Washing control method and device and dish washing machine

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Publication number Priority date Publication date Assignee Title
US4777683A (en) * 1987-12-07 1988-10-18 Pellerin Milnor Corporation Treatment of cloth or other liquid absorbent goods
DE4141213C2 (en) * 1991-12-13 1996-12-12 Bosch Siemens Hausgeraete Method for determining the dry weight of laundry, the water level and the bound liquor in a drum washing machine and washing machine for carrying out the method
EP0686721B1 (en) * 1994-06-09 2000-05-10 Whirlpool Europe B.V. Method for optimising water utilisation in a washing machine, washing-drying machine or the like during the use thereof
KR0176863B1 (en) * 1995-11-18 1999-05-15 구자홍 Water level sensing method using weight sensor
DE19641477B4 (en) * 1996-10-09 2005-10-20 Aeg Hausgeraete Gmbh Method for controlling the rinsing process of a washing machine
US5768729A (en) * 1996-12-19 1998-06-23 Maytag Corporation Adaptive fill control for an automatic washer

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Publication number Publication date
DE60021930T2 (en) 2006-06-08
DE60021930D1 (en) 2005-09-22
EP1029962A1 (en) 2000-08-23
FR2789568A1 (en) 2000-08-18
ES2245926T3 (en) 2006-02-01
FR2789568B1 (en) 2001-05-04

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