DE19907074A1 - Water-bearing household appliance, in particular household dishwasher - Google Patents

Water-bearing household appliance, in particular household dishwasher

Info

Publication number
DE19907074A1
DE19907074A1 DE19907074A DE19907074A DE19907074A1 DE 19907074 A1 DE19907074 A1 DE 19907074A1 DE 19907074 A DE19907074 A DE 19907074A DE 19907074 A DE19907074 A DE 19907074A DE 19907074 A1 DE19907074 A1 DE 19907074A1
Authority
DE
Germany
Prior art keywords
pump
water
pumping
speed
household
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.)
Withdrawn
Application number
DE19907074A
Other languages
German (de)
Inventor
Ernst Stickel
Helmut Jerg
Michael Rosenbauer
Bernd Schesl
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7898094&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE19907074(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to DE19907074A priority Critical patent/DE19907074A1/en
Priority to ES00101982T priority patent/ES2223323T3/en
Priority to EP00101982A priority patent/EP1029497B1/en
Priority to AT00101982T priority patent/ATE269659T1/en
Priority to DE50006860T priority patent/DE50006860D1/en
Publication of DE19907074A1 publication Critical patent/DE19907074A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0052Noise reduction
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021Regulation 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
    • A47L15/0031Water discharge phases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225Arrangements or adaption of recirculation or discharge pumps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/09Water level
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00Output 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
    • A47L2501/05Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Electric Motors In General (AREA)
  • Cookers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Sliding-Contact Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The machine has an emptying pump and a circulating pump that is operated at least intermittently when pumping out the cleaning liquid from the machine. The speed of the circulating pump can be regulated, whereby its speed is regulated up to fully loaded operation according to the falling water level.

Description

Die Erfindung betrifft ein wasserführendes Haushaltsgerät, insbesondere eine Haushalt- Geschirrspülmaschine, mit einer Entleerungspumpe und einer Umwälzpumpe, die zuminde­ stens zeitweise beim Abpumpen der Reinigungsflüssigkeit aus dem Haushaltsgerät betrieben wird.The invention relates to a water-bearing household appliance, in particular a household Dishwasher, with a drain pump and a circulation pump, the at least operated at times when pumping the cleaning liquid out of the household appliance becomes.

Wasserführende Haushaltsgeräte der eingangs genannten Art sind bekannt, z. B. aus der DE-OS 39 21 422, in der eine Haushalt-Geschirrspülmaschine beschrieben ist, bei der wäh­ rend des Abpumpens in wenigstens einem Teilprogrammschritt die Umwälzpumpe und die zum Abpumpen vorgesehene Entleerungspumpe gleichzeitig betrieben werden: Der Betrieb der Umwälzpumpe hat den Zweck, den Eintritt der zum Zeitpunkt des Abpumpens ver­ schmutzten Spülflüssigkeit in Meßkammern, wie z. B. einen Niveaugeber, zu verhindern. Der Betrieb der Umwälzpumpe hält also den Flüssigkeitsstand auf einem, während des Abpum­ pens natürlich fallenden, dynamischen Niveau so lange bis sichergestellt ist, daß eine Schmutzverschleppung nicht mehr eintreten kann, d. h. auch das statische Niveau, das sich nach Abstellen der Umwälzpumpe einstellt, niedriger als z. B. der Eingang eines Niveauge­ bers. Diese Vorgehensweise wird üblicherweise dynamisches Abpumpen genannt.Water-bearing household appliances of the type mentioned are known, for. B. from the DE-OS 39 21 422, in which a household dishwasher is described, in which rend the pumping in at least one sub-program step, the circulation pump and the the drainage pump intended for pumping can be operated simultaneously: the operation the circulation pump has the purpose of ver dirty washing liquid in measuring chambers, such as. B. to prevent a level sensor. The Operation of the circulation pump thus keeps the liquid level at a, during the pumping pens naturally falling, dynamic level until it is ensured that a Carryover of dirt can no longer occur, d. H. also the static level that is after switching off the circulation pump sets lower than z. B. the entrance of a level eye bers. This procedure is usually called dynamic pumping.

Da die Umwälzpumpe bei einem dynamischen Abpumpen ständig mit voller Pumpenleistung betrieben wird, wird sobald der Rundlauf der Umwälzpumpe durch die immer geringer wer­ dende, umzuwälzende Flüssigkeit gestört ist, ein wesentlich höheres Geräusch, insbesonde­ re durch Geräuschspitzen, entwickelt, als im Normalbetrieb mit ausreichender Flüssigkeits­ menge. Die Entleerungspumpe wird üblicherweise zeitgesteuert betrieben, wobei die Be­ triebsdauer der Entleerungspumpe, um keine Rückstände der schmutzigen Spülflüssigkeit zurückzulassen, auf das Abpumpen der größten möglichen Flüssigkeitsmenge ev. mit einem Zeitzuschlag ausgelegt ist. Da auch die Entleerungspumpe ständig mit voller Pumpenlei­ stung betrieben wird, wird auch bei Betrieb dieser sobald deren Rundlauf die immer geringer werdende, abzupumpende Flüssigkeit gestört ist, ein wesentlich höheres Geräusch, insbe­ sondere durch Geräuschspitzen, entwickelt. Durch die lange Betriebsdauer kommt es oft zu einem längeren Betrieb der Entleerungspumpe bei schon vollständig entleertem wasserfüh­ renden Haushaltsgerät, dem sogenannten Trockenlauf, was eine besonders hohe Geräusch­ entwicklung zur Folge hat.Since the circulating pump is constantly at full pump output during dynamic pumping is operated, as soon as the circulation of the circulation pump by the whoever the circulating liquid is disturbed, a much higher noise, in particular re by noise peaks, developed than in normal operation with sufficient liquid quantity. The drain pump is usually operated time-controlled, the loading operating time of the drain pump, so no residues of the dirty rinsing liquid to pump out the largest possible amount of liquid with a Time allowance is designed. Since the drainage pump is constantly full of pumps Stung is operated, the operation of this as soon as their concentricity the less liquid to be pumped out is disturbed, a much higher noise, in particular developed especially through noise peaks. Due to the long operating time it often happens prolonged operation of the drain pump when the water has already been completely drained  renden household appliance, the so-called dry running, which is a particularly high noise development.

Der Erfindung liegt daher die Aufgabe zugrunde, bei einem wasserführenden Haushaltsgerät der eingangs genannten Art beim Abpumpen auf einfache Art und Weise eine erhöhte Ge­ räuschentwicklung zu vermeiden.The invention is therefore based on the object in a water-carrying household appliance the type mentioned in the pumping in a simple manner, an increased Ge to avoid noise.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Drehzahl der Umwälzpumpe regelbar ist, wobei die Drehzahl der Umwälzpumpe entsprechend der fallenden Wasser­ menge auf Vollastbetrieb geregelt wird.This object is achieved in that the speed of the circulation pump is adjustable, the speed of the circulation pump corresponding to the falling water quantity is regulated to full load operation.

Dadurch, daß die Drehzahl und damit die Förderleistung der Umwälzpumpe dem fallenden Flüssigkeitsniveau angepaßt wird, kommt es nicht zum Ansaugen von Luft und anderen denkbaren Störungen, die unweigerlich zu den genannten Geräuschspitzen führen und eine erhöhte Geräuschentwicklung während des Abpumpen aus dem erfindungsgemäßen wasserführenden Haushaltsgerät verursachen. Dadurch, daß bei der Regelung der Drehzahl der Umwälzpumpe erkannt wird, ob und wie stark das Flüssigkeitsniveau absinkt, ist auch eine Überprüfung des Betriebes und der Förderleistung der Entleerungspumpe möglich, wo­ durch die Betriebsdauer der Entleerungspumpe auf einen optimalen Wert eingestellt werden kann, wodurch ein unnötig langer Trockenlauf und die dabei besonders hohe Geräuschent­ wicklung vermieden wird. Mit der Erfindung wird bei einem wasserführenden Haushaltsgerät der eingangs genannten Art beim Abpumpen auf einfache Art und Weise eine erhöhte Ge­ räuschentwicklung vermieden.The fact that the speed and thus the delivery rate of the circulation pump the falling If the liquid level is adjusted, there is no suction of air and others conceivable disturbances, which inevitably lead to the noise peaks mentioned and a increased noise during pumping out of the invention cause water-bearing household appliance. The fact that in the regulation of the speed the circulation pump is recognized whether and how much the liquid level drops is also a check of the operation and delivery of the drain pump possible where can be set to an optimal value by the operating time of the drain pump can, resulting in an unnecessarily long dry run and the particularly high noise winding is avoided. With the invention is in a water-bearing household appliance the type mentioned in the pumping in a simple manner, an increased Ge avoided noise.

Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles einer Haushalt- Geschirrspülmaschine erläutert.The invention is described below using an exemplary embodiment of a household Dishwasher explained.

Eine erfindungsgemäße Haushalt-Geschirrspülmaschine weist eine Umwälzpumpe auf, die zu­ mindestens zeitweise beim Abpumpen der Spülflüssigkeit aus der Haushalt- Geschirrspülmaschine durch eine Entleerungspumpe betrieben wird. Dies erfolgt im Ausfüh­ rungsbeispiel dadurch, daß am Ende eines Teilprogrammabschnittes mit Flüssigkeitseinsatz, z. B. dem Teilprogrammabschnitt "Reinigen" die Entleerungspumpe in Betrieb genommen wird und die Umwälzpumpe noch weiter im Vollastbetrieb am eigentlichen Arbeitspunkt betrieben wird, was üblicherweise als dynamisches Abpumpen bezeichnet wird. Der Betrieb der Umwälz­ pumpe beim Abpumpvorgang hat den Zweck, den Eintritt der zum Zeitpunkt des Abpumpens sehr verschmutzten Spülflüssigkeit in z. B. einen Niveaugeber zu verhindern. Entsprechend der sich während der Fortdauer des Abpumpvorganges der Haushalt-Geschirrspülmaschine verrin­ gernden Spülflüssigkeitsmenge wird nun die Drehzahl der Umwälzpumpe so geregelt, daß sich immer ein Vollastbetrieb einstellt, d. h. sie wird immer niedriger eingestellt. Diese wird so lange fortgesetzt, bis eine minimale Drehzahl der Umwälzpumpe erreicht ist. Dadurch, daß die Dreh­ zahl und damit die Förderleistung der Umwälzpumpe dem fallenden Flüssigkeitsniveau ange­ paßt wird, kommt es nicht zum Ansaugen von Luft und anderen denkbaren Störungen, die un­ weigerlich zu den genannten Geräuschspitzen führen und eine erhöhte Geräuschentwicklung während des Abpumpen aus dem erfindungsgemäßen wasserführenden Haushaltsgerät verur­ sachen. Danach wird die Entleerungspumpe alleine über eine geregelte Betriebsdauer betrie­ ben. Diese Regelung der restlichen Betriebsdauer erfolgt aufgrund der bei der Regelung der Drehzahl der Umwälzpumpe erkannten Flüssigkeitsniveauabsenkung, wodurch ein unnötig lan­ ger Trockenlauf und die dabei besonders hohe Geräuschentwicklung der Entleerungspumpe vermieden wird. Mit der Erfindung wird bei einem wasserführenden Haushaltsgerät der eingangs genannten Art beim Abpumpen auf einfache Art und Weise eine erhöhte Geräuschentwicklung vermieden.A household dishwasher according to the invention has a circulating pump that closes at least temporarily when pumping the washing liquid out of the household Dishwasher is operated by a drain pump. This is done in execution Example in that at the end of a sub-program section with the use of liquid, e.g. B. the sub-program section "cleaning" the drain pump is put into operation and the circulation pump is still operated at full load at the actual working point what is commonly referred to as dynamic pumping. Operation of the circulation pump during the pumping process has the purpose of entering at the time of pumping very dirty washing liquid in e.g. B. to prevent a level sensor. According to the get lost during the pumping process of the household dishwasher The amount of flushing liquid is now regulated so that the speed of the circulation pump  always runs at full load, d. H. it is set lower and lower. This will be so long continued until a minimum speed of the circulation pump is reached. Because the rotation number and thus the delivery rate of the circulating pump depending on the falling liquid level fits, there is no suction of air and other conceivable faults that un inevitably lead to the noise peaks mentioned and increased noise during the pumping out of the water-bearing household appliance according to the invention stuff. The drain pump is then operated alone over a regulated operating period ben. This regulation of the remaining operating time takes place on the basis of the regulation of the Recirculation pump speed detected liquid level drop, making an unnecessarily long Long dry running and the particularly high noise level of the drain pump is avoided. The invention is the beginning of a water-bearing household appliance mentioned type when pumping in a simple way an increased noise avoided.

Claims (1)

Wasserführendes Haushaltsgerät, insbesondere Haushalt-Geschirrspülmaschine, mit einer Ent­ leerungspumpe und einer Umwälzpumpe, die zumindestens zeitweise beim Abpumpen der Rei­ nigungsflüssigkeit aus dem Haushaltsgerät betrieben wird, dadurch gekennzeichnet, daß die Drehzahl der Umwälzpumpe regelbar ist, wobei die Drehzahl der Umwälzpumpe ent­ sprechend der fallenden Wassermenge auf Vollastbetrieb geregelt wird.Water-carrying household appliance, in particular household dishwasher, with a drain pump and a circulating pump, which is operated at least temporarily when pumping out the cleaning liquid from the domestic appliance, characterized in that the speed of the circulating pump is adjustable, the speed of the circulating pump accordingly the falling Water volume is regulated at full load.
DE19907074A 1999-02-19 1999-02-19 Water-bearing household appliance, in particular household dishwasher Withdrawn DE19907074A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19907074A DE19907074A1 (en) 1999-02-19 1999-02-19 Water-bearing household appliance, in particular household dishwasher
ES00101982T ES2223323T3 (en) 1999-02-19 2000-02-01 ELECTRICAL APPLIANCE WITH WATER CIRCULATION; IN PARTICULAR DISHWASHER.
EP00101982A EP1029497B1 (en) 1999-02-19 2000-02-01 Household apparatus with water circulation , in particular household dishwasher
AT00101982T ATE269659T1 (en) 1999-02-19 2000-02-01 WATER-CHARGING HOUSEHOLD APPLIANCE, IN PARTICULAR HOUSEHOLD DISHWASHER
DE50006860T DE50006860D1 (en) 1999-02-19 2000-02-01 Water-bearing household appliance, in particular household dishwasher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19907074A DE19907074A1 (en) 1999-02-19 1999-02-19 Water-bearing household appliance, in particular household dishwasher

Publications (1)

Publication Number Publication Date
DE19907074A1 true DE19907074A1 (en) 2000-08-24

Family

ID=7898094

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19907074A Withdrawn DE19907074A1 (en) 1999-02-19 1999-02-19 Water-bearing household appliance, in particular household dishwasher
DE50006860T Expired - Lifetime DE50006860D1 (en) 1999-02-19 2000-02-01 Water-bearing household appliance, in particular household dishwasher

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE50006860T Expired - Lifetime DE50006860D1 (en) 1999-02-19 2000-02-01 Water-bearing household appliance, in particular household dishwasher

Country Status (4)

Country Link
EP (1) EP1029497B1 (en)
AT (1) ATE269659T1 (en)
DE (2) DE19907074A1 (en)
ES (1) ES2223323T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000760A1 (en) * 2011-02-16 2012-08-16 Miele & Cie. Kg Method for emptying liquid e.g. fresh water from storage vessel in rinsing chamber of dishwasher, involves starting circulating pump with low speed, and operating pump with high rotation speed during emptying liquid in rinsing chamber

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10257826A1 (en) * 2002-05-16 2003-11-27 Electrolux Home Prod Corp Dishwasher and method for operating a dishwasher when using a combination preparation with several active ingredients
KR101322548B1 (en) 2005-03-19 2013-10-25 엘지전자 주식회사 A dish washer and a control method the same
JP4982524B2 (en) * 2009-05-25 2012-07-25 パナソニック株式会社 Control method for starting operation of gas dissolving apparatus
DE102016201446B3 (en) * 2016-02-01 2017-02-09 BSH Hausgeräte GmbH Laundry care device with a pump control
ES2656508B1 (en) * 2016-07-06 2018-12-11 Bsh Electrodomésticos España, S.A. METHOD OF GENERATING STEAM AND DOMESTIC STEAM GENERATION DEVICE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921422A1 (en) * 1989-06-29 1991-01-10 Bosch Siemens Hausgeraete METHOD FOR OPERATING A PROGRAM-CONTROLLED DISHWASHER
IT1273149B (en) * 1994-04-15 1997-07-04 Merloni Elettrodomestici Spa DISHWASHER MACHINE PERFECTED WITH AN ELECTRONIC WASHING WATER PRESSURE REGULATION SYSTEM
US5762080A (en) * 1997-01-24 1998-06-09 White Consolidated Industries, Inc. Dishwasher cycle pulsing pump out of collection chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000760A1 (en) * 2011-02-16 2012-08-16 Miele & Cie. Kg Method for emptying liquid e.g. fresh water from storage vessel in rinsing chamber of dishwasher, involves starting circulating pump with low speed, and operating pump with high rotation speed during emptying liquid in rinsing chamber

Also Published As

Publication number Publication date
ES2223323T3 (en) 2005-03-01
EP1029497B1 (en) 2004-06-23
ATE269659T1 (en) 2004-07-15
EP1029497A2 (en) 2000-08-23
EP1029497A3 (en) 2000-11-22
DE50006860D1 (en) 2004-07-29

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