EP1967121B1 - Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle - Google Patents

Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle Download PDF

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Publication number
EP1967121B1
EP1967121B1 EP08002338A EP08002338A EP1967121B1 EP 1967121 B1 EP1967121 B1 EP 1967121B1 EP 08002338 A EP08002338 A EP 08002338A EP 08002338 A EP08002338 A EP 08002338A EP 1967121 B1 EP1967121 B1 EP 1967121B1
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EP
European Patent Office
Prior art keywords
rotational speed
refuelling
circulating pump
pump
speed
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.)
Active
Application number
EP08002338A
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German (de)
English (en)
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EP1967121A1 (fr
Inventor
Erik Berends
Markus Drücker
Uwe Femmer
Volkmar Schwert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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Publication date
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Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL08002338T priority Critical patent/PL1967121T3/pl
Publication of EP1967121A1 publication Critical patent/EP1967121A1/fr
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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
    • A47L15/0018—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
    • A47L15/0023—Water filling
    • 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
    • A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • 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
    • A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve

Definitions

  • the invention relates to a method for carrying out a water inlet into the washing container of a dishwasher, in particular a domestic dishwasher with a circulating pump whose speed can be controlled, wherein the method of filling a groundwater quantity and a subsequent increase in the circulation pump speed of a start-up speed includes a target speed.
  • a method for carrying out a water inlet into the washing container of a dishwasher in particular a domestic dishwasher with a circulating pump whose speed can be controlled, wherein the method of filling a groundwater quantity and a subsequent increase in the circulation pump speed of a start-up speed includes a target speed.
  • unstable pump operation is characterized by an increase in the number of revolutions, a decrease in the engine torque, fluctuations in the pump pressure and noise.
  • the Applicant manufactures household dishwashers in which first a quantity of groundwater is introduced. If, as a result of an unstable pump run, a speed fluctuation of the circulating pump motor is detected, then a discrete quantity of 75 ml is refueled. For large Spülgutmengen this leads to the corresponding number of refilling cycles, also more water is usually filled in the rinse tank in the last refueling step, as would be necessary for a stable pump running.
  • the invention thus presents the problem of disclosing a method for carrying out a water inlet in the washing container of a dishwasher of the type mentioned, in which a very precise amount of water is simply and quickly determined.
  • the water intake becomes more accurate and faster.
  • the short dwell time in the unstable pump run (about one second) significantly reduces noise.
  • Dishwasher 1 shown has a designated 2 rinse tank, which opens into a collecting pot 3 in the lower area. From there, the accumulated liquid, usually cold or heated water with rinsing additives, via a suction nozzle 4 of a circulating pump 5 is supplied.
  • the washing container 2 two baskets 6 and 7 and a cutlery drawer 8 are arranged, which serve to hold the corresponding items to be washed.
  • the cutlery and crockery items not shown in the drawings are rotatable spray arms 9 to 11, of which two baskets 6 and 7 and the drawer 8 is assigned one each, irrigated with cleaning liquid.
  • the circulation pump 5 has three separate discharge nozzles 12 to 14, which are connected via Sprüharmzutechnisch 15 to 17 with the respective spray arm 9, 10 or 11 in combination.
  • the lower basket 6 associated spray arm 9 is supplied via the discharge nozzle 12 and the upper basket spray arm 10 via the discharge nozzle 13 with rinsing or cleaning liquid.
  • the upper installed on the Spipporaumdecke 2.1 spray arm 11 of the discharge nozzle 14 leads to liquid.
  • the spray arms can be operated together or alternately. To enable the latter, a water switch, not shown in the drawing would have to be integrated for example in the pump chamber of the circulation pump.
  • the drive of the pump impeller (not shown), through which the necessary pressure for supplying the spray arms is constructed 9 to 11, is carried out by a motor 18 with a variable speed.
  • a motor 18 with a variable speed In the embodiment, reference will later be made to an electronically commutated motor with permanent magnet rotor, other motor types with variable speed but are also conceivable.
  • the speed control takes place in the symbolized by the box 19 and the control line 20 electronic device control.
  • the speed is calculated by a speed estimator from motor parameters, voltages and measured motor currents.
  • the controller manipulated variable corresponds to a nominal value of the engine torque, from which the engine voltages are determined via a motor model.
  • the device control 19 also influences the water supply to the washing container 2 by setting the duty cycle of a solenoid valve 21 and determines the run-in amount of water via an impeller 22.
  • the water supply is shown in the figure only symbolized by the two aforementioned components solenoid valve 21 and impeller 22, which is common in dishwashers water supply via a water bag and a softening device is not included, because it is irrelevant to the invention.
  • FIG. 2 To explain the phenomenon of a stable and unstable pump run, is in FIG. 2 the behavior of some of the liquid level in the washing container 2 dependent parameters shown. Predetermined is a specific amount of liquid V 1 , which is located in the washing compartment 2. Now, if the speed of the circulation pump 5 is slowly increased, as shown in the diagram I, a part of the liquid in the Sprüharmzutechnischen 15 to 17 and the spray arms 9 to 11 transported, a part runs over the dishes. The volume in the collection pot 3 is reduced by these proportions. The higher the speed of the circulating pump 5, the more liquid is in circulation and the lower the volume in the collecting pot 3.
  • the liquid level drops to the height of the intake 4, the pump 5 sucks air , This increases due to the lower resistance of the air at the pump impeller abruptly the speed.
  • the characteristic value for monitoring the pump run is calculated from the controller manipulated variable by summing the amounts of the deviations from the average manipulated variable over a time interval of, for example, one second.
  • Another indication of unstable pump operation is the pressure fluctuation of the pump pressure due to the admixture of air (see diagram III).
  • the method according to the invention for carrying out a water inlet is illustrated by means of a time-dependent diagram, which represents the circulating pump speed and the amount of water flowed in by means of the impeller counter 22.
  • the device controller opens the solenoid valve 21 until a quantity of groundwater has entered the washing container 2.
  • the groundwater quantity corresponds to the quantity which a device that is only slightly or not loaded needs for stable pumping with target speed.
  • the circulating pump 5 is switched on by the device control 19 and, starting from a starting speed, the speed is increased with an increase of approximately 20 min -1 / s. The starting speed is selected so that stable pumping is ensured even at maximum load.
  • an unstable pump run will then occur when the baskets 6 to 8 are loaded, which is recognized by the device control 19 in that the characteristic value calculated from the controller control variable of the circulating pump motor 18 fluctuates more than a predetermined deviation measure.
  • the speed at which the unstable pump running occurs is stored as a refueling speed and used to calculate a Nachzutankenden amount of water.
  • the dependency between the refueling speed and the amount of water to be replenished is device-specific and can be determined by tests. In this case, suitable statistical methods can be used in order to be able to count on a linear dependence of the two variables.
  • the circulation pump 5 is operated after completion of the start-up and Nachankphase with a constant target speed, a calculation of the amount of water is sufficient depending on the Nachank speed;
  • variable target speeds that is to say those dependent on the selected program or on the program section to be executed, the difference or the quotient between the target speed and the refueling speed is included in the calculation of the water quantity.
  • the circulation pump speed is reduced by 200 min -1 compared to the refueling speed in order to achieve stable pumping again, refueling is then carried out at constant speed (section C).
  • the recycle pump speed is further increased, ideally up to the target speed because a single refueling operation has been sufficient.
  • an unstable pump run occurs again at a second refueling speed. This can be due to large sinks be in the fluid circuit, for example, caused by incorrectly set vessels or more Spülgutmaschine with a rough surface.
  • a second amount of water to be replenished is then calculated, there is a further refueling process in section E.
  • the target speed is then reached in section F.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (9)

  1. Procédé de réalisation d'une entrée d'eau dans la cuve de lavage (2) d'un lave-vaisselle (1), en particulier d'un lave-vaisselle ménager avec une pompe de recirculation (5) dont la vitesse de rotation est réglable, le procédé comprenant le remplissage d'une quantité d'eau de la nappe phréatique suivi d'une augmentation de la vitesse de rotation de la pompe de recirculation passant d'une vitesse de rotation de départ à une vitesse de rotation d'arrivée,
    caractérisé en ce que,
    après l'entrée de la quantité d'eau de la nappe phréatique, la vitesse de rotation de la pompe de recirculation est augmentée, en partant de la vitesse de rotation de départ, jusqu'à une vitesse de rotation de remplissage d'appoint pour laquelle une marche de pompe instable apparaît, et en ce que, ensuite, une quantité d'eau dépendant de la vitesse de rotation de remplissage d'appoint ou de la différence ou du quotient entre la vitesse de rotation d'arrivée et la vitesse de rotation de remplissage d'appoint est ensuite conduite à la cuve de lavage (2).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la marche instable de pompe est déterminée par le dépassement, selon une dimension de divergence prédéfinie, d'un paramètre de régulation du moteur (18) de pompe de recirculation ou d'une valeur caractéristique qui est calculée à partir de ce dépassement.
  3. Procédé selon la revendication 2,
    caractérisé en ce que,
    comme paramètre de régulation, la grandeur de réglage du moteur (18) de pompe de recirculation ou bien une valeur caractéristique calculée à partir de cette grandeur est surveillée.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que,
    après le premier processus de remplissage d'appoint, une autre surveillance de la marche instable de pompe est effectuée, accompagnée d'une éventuelle détermination d'une deuxième vitesse de rotation de remplissage d'appoint et d'un deuxième processus de remplissage d'appoint qui lui est lié.
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la vitesse de rotation de départ est inférieure à une vitesse de rotation pour laquelle il se produit une marche instable de pompe à la charge maximale.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la vitesse de rotation est augmentée de façon continue.
  7. Procédé selon la revendication 6,
    caractérisé en ce que
    la vitesse de rotation est augmentée d'environ 20 min-1/s.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la vitesse de rotation de la pompe de recirculation est maintenue constante pendant le processus de remplissage d'appoint.
  9. Procédé selon la revendication 8,
    caractérisé en ce que la vitesse de rotation de la pompe de recirculation est, pendant le processus de remplissage d'appoint, réduite par rapport à la vitesse de rotation de remplissage d'appoint.
EP08002338A 2007-03-06 2008-02-08 Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle Active EP1967121B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08002338T PL1967121T3 (pl) 2007-03-06 2008-02-08 Sposób realizacji dopływu wody do komory myjącej zmywarki

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007011307A DE102007011307B3 (de) 2007-03-06 2007-03-06 Verfahren zur Durchführung eines Wassereinlaufs in den Spülbehälter einer Spülmaschine

Publications (2)

Publication Number Publication Date
EP1967121A1 EP1967121A1 (fr) 2008-09-10
EP1967121B1 true EP1967121B1 (fr) 2011-07-06

Family

ID=39563597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08002338A Active EP1967121B1 (fr) 2007-03-06 2008-02-08 Procédé d'exécution d'une introduction d'eau dans le récipient de rinçage d'un lave-vaisselle

Country Status (5)

Country Link
EP (1) EP1967121B1 (fr)
AT (1) ATE515227T1 (fr)
DE (1) DE102007011307B3 (fr)
ES (1) ES2367668T3 (fr)
PL (1) PL1967121T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056918B3 (de) * 2007-11-27 2009-04-30 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Regelung eines Spülgangs in einem wasserführenden Haushaltsgerät
DE102008055022A1 (de) * 2008-12-19 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät
DE102009046359A1 (de) * 2009-11-03 2011-05-05 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer optimierten Füllsequenz
DE102010029730A1 (de) * 2010-06-07 2011-12-08 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer dynamischen Füllsequenz
DE102010043328A1 (de) * 2010-11-03 2012-05-03 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
DE102012105906A1 (de) 2012-07-03 2014-01-09 Miele & Cie. Kg Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
DE102014105527B3 (de) * 2014-04-17 2015-04-16 Miele & Cie. Kg Verfahren zur Regelung eines Umflutungspumpen-Systems
CN108289586B (zh) 2015-11-19 2021-02-12 伊莱克斯电器股份公司 估算用于洗涤和冲洗物品的器具中的充水率
KR102448862B1 (ko) * 2016-01-05 2022-09-30 엘지전자 주식회사 식기 세척기 및 식기 세척기의 제어방법

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803006A1 (de) * 1988-02-02 1989-08-03 Hanning Elektro Werke Geschirrspuelmaschine
DE19505552A1 (de) * 1995-02-18 1996-08-22 Aeg Hausgeraete Gmbh Verfahren zum Betreiben einer Geschirrspülmaschine
DE19513352C2 (de) * 1995-04-08 1998-01-08 Miele & Cie Verfahren zur Drehzahleinstellung der Umwälzpumpe einer programmgesteuerten Geschirrspülmaschine
DE19750266A1 (de) * 1997-11-13 1999-05-20 Miele & Cie Verfahren zum Betrieb einer Umwälzpumpe bei einer programmgesteuerten Geschirrspülmaschine
DE19828871B4 (de) * 1998-06-25 2008-07-03 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
DE19907076A1 (de) * 1999-02-19 2000-08-24 Bsh Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät, insbesondere Haushalt-Geschirrspülmaschine
DE10065677A1 (de) * 2000-12-29 2002-07-04 Bsh Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät mit optimierter Pumpensteuerung
DE10065639A1 (de) * 2000-12-29 2002-07-04 Bsh Bosch Siemens Hausgeraete Steuerverfahren zum Steuern des elektrischen Antriebsmotors einer Pumpe auf verschiedene Drehzahlen
US7776159B2 (en) * 2005-12-30 2010-08-17 General Electric Company Methods and apparatus for controlling a dishwasher

Also Published As

Publication number Publication date
ATE515227T1 (de) 2011-07-15
ES2367668T3 (es) 2011-11-07
EP1967121A1 (fr) 2008-09-10
DE102007011307B3 (de) 2008-08-21
PL1967121T3 (pl) 2011-12-30

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