EP1029496A2 - Household dishwasher - Google Patents

Household dishwasher Download PDF

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Publication number
EP1029496A2
EP1029496A2 EP00101981A EP00101981A EP1029496A2 EP 1029496 A2 EP1029496 A2 EP 1029496A2 EP 00101981 A EP00101981 A EP 00101981A EP 00101981 A EP00101981 A EP 00101981A EP 1029496 A2 EP1029496 A2 EP 1029496A2
Authority
EP
European Patent Office
Prior art keywords
spray
circulation pump
devices
speed
group
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.)
Granted
Application number
EP00101981A
Other languages
German (de)
French (fr)
Other versions
EP1029496A3 (en
EP1029496B1 (en
Inventor
Ernst Stickel
Helmut Jerg
Michael Rosenbauer
Bernd Schessl
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
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1029496A2 publication Critical patent/EP1029496A2/en
Publication of EP1029496A3 publication Critical patent/EP1029496A3/en
Application granted granted Critical
Publication of EP1029496B1 publication Critical patent/EP1029496B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L15/0052—Noise reduction
    • 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
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Definitions

  • the invention relates to a household dishwasher with changing loading of at least two spray devices or groups of spray devices that are operated by one Circulation pump supplied with rinsing liquid to act on the items to be cleaned become.
  • Household dishwashers with alternating operation of the spray levels have long been known e.g. from DE-OS 24 28 991.
  • the at least two spray devices simultaneously with that of a circulation pump fed liquid.
  • DE-OS 24 28 991 is used to achieve the same or better cleaning result as with the above-mentioned standard household dishwashers
  • Spraying device alternately in succession with the one conveyed by a circulation pump Liquid is fed, so that the full pressure of the circulation pump is only at one spray device to work and a lower amount of liquid and less energy to Circulation and also needed to heat the circulated liquid.
  • Reversing devices from a circulating pump are used.
  • the invention is therefore based on the object in a household dishwasher of the type mentioned at the outset when changing from a spray device or a group from spray devices to a further spray device or group of spray devices to avoid increased noise in a simple manner.
  • This object is achieved in that the speed of the circulation pump is controllable, during the change from a spray device or a group from spray devices to a further spray device or group of spray devices the speed of the circulation pump is reduced.
  • a household dishwasher has a washing container in which Good to be cleaned, e.g. dirty dishes and cutlery, usually in baskets is filled.
  • Good to be cleaned e.g. dirty dishes and cutlery
  • This rinsing liquid Usually called the rinsing liquor, is added to the liquid supply lines by means of a circulation pump the spray devices promoted.
  • alternate loading is carried out of at least two spray devices or groups of spray devices - of Spray Levels - performed by the circulation pump, so the full pressure of the circulation pump only to act on a spray device and a smaller amount of rinsing liquid and less energy to circulate and also to heat the circulated Need rinsing liquid.
  • alternately Feeding the spraying devices from a circulating pump becomes reversing devices used.
  • EP-OS 05 47 011 it is known, for example, by means of a hydraulically operated flap valve arranged between liquid supply lines to the spraying devices alternately open one of the liquid supply lines and at the same time the other liquid supply lines close.
  • EP-OS 02 37 994 it is also known, for example, by means of a ball in the pressure port of the circulation pump, which if the Operation of the circulation pump changes the position, alternately one of the liquid supply lines to open and close the other at the same time.
  • EP-PS 05 85 905 by means of a motor-driven, rotating horizontal Washer with holes to one or more entrances to liquid supply lines open and close others
  • the speed of the circulation pump can be regulated.
  • the speed of the circulation pump during the change from a spray device or a group of spray devices reduced to a further spray device or group of spray devices and thus counteracted a brief ramp-up of the speed of the circulation pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Vending Machines For Individual Products (AREA)

Abstract

The dishwasher has at least two alternately supplied spraying devices or groups of devices that are supplied by at least one circulating pump with rinsing liquid for application to the items to be cleaned. The speed of the pump can be regulated, whereby the speed is reduced during a changeover from one sprayer or group off sprayers to another.

Description

Die Erfindung betrifft eine Haushalt-Geschirrspülmaschine mit wechselnder Beschickung von wenigstens zwei Sprüheinrichtungen bzw. Gruppen von Sprüheinrichtungen, die von einer Umwälzpumpe mit Spülflüssigkeit zur Beaufschlagung von zu reinigendem Gut beliefert werden.The invention relates to a household dishwasher with changing loading of at least two spray devices or groups of spray devices that are operated by one Circulation pump supplied with rinsing liquid to act on the items to be cleaned become.

Haushalt-Geschirrspülmaschinen mit Wechselbetrieb der Sprühebenen sind seit langem bekannt, z.B. aus der DE-OS 24 28 991. Bei handelsüblichen Haushalt-Geschirrspülmaschinen werden die wenigstens zwei Sprüheinrichtungen gleichzeitig mit der von einer Umwälzpumpe geförderten Flüssigkeit beschickt. Bei der Haushalt-Geschirrspülmaschine nach der DE-OS 24 28 991 wird aber zur Erzielung eines gleichen oder besseren Reinigungsergebnisses wie bei den vorgeschilderten handelsüblichen Haushalt-Geschirrspülmaschinen jede Sprüheinrichtung wechselnd nacheinander mit der von einer Umwälzpumpe geförderten Flüssigkeit beschickt, um so den vollen Druck der Umwälzpumpe nur an einer Sprüheinrichtung wirken zu lassen und eine geringere Flüssigkeitsmenge und geringere Energie zum Umwälzen und auch zum Erwärmen der umgewälzten Flüssigkeit zu benötigen. Zur Durchführung eines derartigen Verfahrens der wechselweisen Beschickung der Sprüheinrichtungen von einer Umwälzpumpe werden Umsteuereinrichtungen verwendet.Household dishwashers with alternating operation of the spray levels have long been known e.g. from DE-OS 24 28 991. In commercial household dishwashers the at least two spray devices simultaneously with that of a circulation pump fed liquid. In the household dishwasher after DE-OS 24 28 991 is used to achieve the same or better cleaning result as with the above-mentioned standard household dishwashers Spraying device alternately in succession with the one conveyed by a circulation pump Liquid is fed, so that the full pressure of the circulation pump is only at one spray device to work and a lower amount of liquid and less energy to Circulation and also needed to heat the circulated liquid. To carry out of such a method of alternately loading the spray devices Reversing devices from a circulating pump are used.

Beim Umschalten durch diese Umsteuereinrichtungen, üblicherweise sogenannte Wasserweichen, ist es unvermeidlich, daß - wenn auch kurzzeitig - Spülflüssigkeit in beide Zuleitungen zu beiden Sprühebenen geliefert wird. Bei diesem kurzzeitigen, gleichzeitigen Zweiebenenbetrieb kommt es zu einer höheren Belastung der Umwälzpumpe, was zu einer erhöhten Geräuschentwicklung durch die Umwälzpumpe führt.When switching through these reversing devices, usually so-called water switches, it is inevitable that - albeit briefly - flushing liquid in both supply lines is delivered to both spray levels. In this brief, simultaneous two-level operation there is a higher load on the circulation pump, which leads to an increased Noise caused by the circulation pump.

Der Erfindung liegt daher die Aufgabe zugrunde, bei einer Haushalt-Geschirrspülmaschine der eingangs genannten Art beim Wechsel von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen auf einfache Art und Weise eine erhöhte Geräuschentwicklung zu vermeiden. The invention is therefore based on the object in a household dishwasher of the type mentioned at the outset when changing from a spray device or a group from spray devices to a further spray device or group of spray devices to avoid increased noise in a simple manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Drehzahl der Umwälzpumpe regelbar ist, wobei während des Wechsels von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen die Drehzahl der Umwälzpumpe reduziert wird.This object is achieved in that the speed of the circulation pump is controllable, during the change from a spray device or a group from spray devices to a further spray device or group of spray devices the speed of the circulation pump is reduced.

Durch die Reduzierung der Drehzahl der Umwälzpumpe bei jedem Wechsel der Beschickung der Sprühebenen wird einem kurzzeitigen Hochfahren der Drehzahl der Pumpe aufgrund des kurzzeitigen Zweiebenenbetriebes entgegengewirkt und damit einer erhöhten Geräuschentwicklung durch die Umwälzpumpe entgegengewirkt. Mit der Erfindung wird bei einer Haushalt-Geschirrspülmaschine der eingangs genannten Art beim Wechsel von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen auf einfache Art und Weise eine erhöhte Geräuschentwicklung vermieden.By reducing the speed of the circulation pump each time the feed is changed the spray level is caused by a brief increase in the speed of the pump the short-term two-level operation counteracted and thus an increased noise counteracted by the circulation pump. With the invention Household dishwasher of the type mentioned when changing from one Spray device or a group of spray devices for a further spray device or group of spray devices in a simple manner an increased noise avoided.

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 einen Spülbehälter auf, in den zu reinigendes Gut, z.B. verschmutztes Geschirr und Besteck, üblicherweise in Geschirrkörbe eingefüllt wird. In dem Spülbehälter sind erfindungsgemäß wenigstens zwei Sprüheinrichtungen angeordnet, die das zu reinigende Gut mit Spülflüssigkeit beaufschlagen. Diese Spülflüssigkeit, üblicherweise Spülflotte genannt, wird mittels einer Umwälzpumpe in Flüssigkeitszuleitungen zu den Sprüheinrichtungen gefördert.A household dishwasher according to the invention has a washing container in which Good to be cleaned, e.g. dirty dishes and cutlery, usually in baskets is filled. According to the invention, there are at least two spray devices in the rinsing container arranged, which act on the items to be cleaned with rinsing liquid. This rinsing liquid, Usually called the rinsing liquor, is added to the liquid supply lines by means of a circulation pump the spray devices promoted.

Bei der erfindungsgemäßen Haushalt-Geschirrspülmaschine wird ein wechseweises Beschicken von wenigstens zwei Sprüheinrichtungen bzw. Gruppen von Sprüheinrichtungen - von Sprühebenen - durch die Umwälzpumpe durchgeführt, um so den vollen Druck der Umwälzpumpe nur an einer Sprüheinrichtung wirken zu lassen und eine geringere Spülflüssigkeitsmenge und geringere Energie zum Umwälzen und auch zum Erwärmen der umgewälzten Spülflüssigkeit zu benötigen. Zur Durchführung eines derartigen Verfahrens der wechselweisen Beschickung der Sprüheinrichtungen von einer Umwälzpumpe werden Umsteuereinrichtungen verwendet.In the household dishwasher according to the invention, alternate loading is carried out of at least two spray devices or groups of spray devices - of Spray Levels - performed by the circulation pump, so the full pressure of the circulation pump only to act on a spray device and a smaller amount of rinsing liquid and less energy to circulate and also to heat the circulated Need rinsing liquid. To carry out such a procedure alternately Feeding the spraying devices from a circulating pump becomes reversing devices used.

Aus der EP-OS 05 47 011 ist beispielsweise bekannt, mittels eines hydraulisch betätigten, zwischen Flüssigkeitszuleitungen zu den Sprüheinrichtungen angeordneten Klappenventils wechselweise eine der Flüssigkeitszuleitungen zu öffnen und gleichzeitig die anderen Flüssigkeitszuleitungen zu schließen. Aus der EP-OS 02 37 994 ist weiterhin beispielsweise bekannt, mittels einer Kugel im Druckstutzen der Umwälzpumpe, die bei Unterbrechung des Betriebes der Umwälzpumpe die Lage ändert, wechselweise eine der Flüssigkeitszuleitungen zu öffnen und die andere gleichzeitig zu schließen. Ferner ist beispielsweise aus dem EP-PS 05 85 905 bekannt, mittels einer motorisch angetriebenen, sich drehenden horizontalen Scheibe mit Bohrungen einen oder mehrere Zugänge zu Flüssigkeitszuleitungen zu öffnen und andere zu schließenFrom EP-OS 05 47 011 it is known, for example, by means of a hydraulically operated flap valve arranged between liquid supply lines to the spraying devices alternately open one of the liquid supply lines and at the same time the other liquid supply lines close. From EP-OS 02 37 994 it is also known, for example, by means of a ball in the pressure port of the circulation pump, which if the Operation of the circulation pump changes the position, alternately one of the liquid supply lines to open and close the other at the same time. Furthermore, for example, from the EP-PS 05 85 905 known, by means of a motor-driven, rotating horizontal Washer with holes to one or more entrances to liquid supply lines open and close others

Beim Umschalten der Klappe nach der EP-OS 05 47 011 wie auch bei der Lageänderung der Kugel nach der EP-OS 02 37 994 und auch beim Verdrehen der Scheibe von einer Bohrung zu einer nächsten Bohrung nach dem EP-PS 05 85 905 kommt es unweigerlich zu einem kurzzeitigen Beschicken der Spülflüssigkeit in beide Zuleitungen. Bei diesem kurzzeitigen, gleichzeitigen Zweiebenenbetrieb kommt es zu einem kurzzeitigen Hochfahren der Drehzahl der Umwälzpumpe, was zu einer erhöhten Geräuschentwicklung durch die Umwälzpumpe führt.When switching the flap according to EP-OS 05 47 011 as well as when changing the position Ball according to EP-OS 02 37 994 and also when turning the disc from a hole The next hole according to EP-PS 05 85 905 will inevitably lead to a short time Feed the rinsing liquid into both feed lines. With this brief, simultaneous In two-level operation there is a brief increase in the speed of the circulation pump, which leads to increased noise from the circulation pump.

Erfindungsgemäß ist die Drehzahl der Umwälzpumpe regelbar.According to the invention, the speed of the circulation pump can be regulated.

Um beim Umschalten durch Umsteuereinrichtungen, z.B. wie oben geschildert, eine bei dem unvermeidlichen kurzzeitigen, gleichzeitigen Zweiebenenbetrieb erhöhten Geräuschentwicklung durch die Umwälzpumpe zu vermeiden, wird erfindungsgemäß die Drehzahl der Umwälzpumpe während des Wechsels von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen reduziert und damit einem kurzzeitigen Hochfahren der Drehzahl der Umwälzpumpe entgegengewirkt.In order to switch over by reversing devices, e.g. as described above, one with the inevitable short-term, simultaneous two-level operation increased noise To avoid by the circulation pump, according to the invention, the speed of the circulation pump during the change from a spray device or a group of spray devices reduced to a further spray device or group of spray devices and thus counteracted a brief ramp-up of the speed of the circulation pump.

Mit der Erfindung wird bei einer Haushalt-Geschirrspülmaschine der eingangs genannten Art beim Wechsel von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen auf einfache Art und Weise eine erhöhte Geräuschentwicklung vermieden.With the invention is in a household dishwasher of the type mentioned when changing from one spray device or a group of spray devices to one another spray device or group of spray devices in a simple manner Avoided increased noise.

Claims (1)

Haushalt-Geschirrspülmaschine mit wechselnder Beschickung von wenigstens zwei Sprüheinrichtungen bzw. Gruppen von Sprüheinrichtungen, die von einer Umwälzpumpe mit Spülflüssigkeit zur Beaufschlagung von zu reinigendem Gut beliefert werden,
dadurch gekennzeichnet,
daß die Drehzahl der Umwälzpumpe regelbar ist, wobei während des Wechsels von einer Sprüheinrichtung bzw. einer Gruppe von Sprüheinrichtungen zu einer weiteren Sprüheinrichtung bzw. Gruppe von Sprüheinrichtungen die Drehzahl der Umwälzpumpe reduziert wird.Household dishwasher with alternating loading of at least two spray devices or groups of spray devices, which are supplied by a circulating pump with washing liquid for loading goods to be cleaned,
characterized by
that the speed of the circulation pump is controllable, the speed of the circulation pump being reduced during the change from a spray device or a group of spray devices to a further spray device or group of spray devices.
EP00101981A 1999-02-19 2000-02-01 Household dishwasher Revoked EP1029496B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19907188A DE19907188A1 (en) 1999-02-19 1999-02-19 Household dishwasher
DE19907188 1999-02-19

Publications (3)

Publication Number Publication Date
EP1029496A2 true EP1029496A2 (en) 2000-08-23
EP1029496A3 EP1029496A3 (en) 2000-11-22
EP1029496B1 EP1029496B1 (en) 2006-05-24

Family

ID=7898183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101981A Revoked EP1029496B1 (en) 1999-02-19 2000-02-01 Household dishwasher

Country Status (4)

Country Link
EP (1) EP1029496B1 (en)
AT (1) ATE326897T1 (en)
DE (2) DE19907188A1 (en)
ES (1) ES2264913T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1240863A2 (en) * 2001-02-07 2002-09-18 T & P S.p.A. Bypass valve for washing machine and relative methods of application
EP1669017A1 (en) * 2004-12-11 2006-06-14 Electrolux Home Products Corporation N.V. Method for operating a dishwasher
EP2156778A3 (en) * 2008-08-21 2011-05-18 LG Electronics Inc. Dishwasher and controlling method thereof
EP2798993A3 (en) * 2013-04-29 2015-01-14 Miele & Cie. KG Device for performing a flushing programme

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163184B4 (en) * 2001-12-21 2008-09-04 BSH Bosch und Siemens Hausgeräte GmbH dishwasher

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237994A2 (en) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Washing machine having a liquid flow distribution valve
EP0547011A1 (en) * 1991-12-11 1993-06-16 Colged S.R.L. A washing method for a dishwashing machine of industrial type
EP0610766A1 (en) * 1993-02-06 1994-08-17 Licentia Patent-Verwaltungs-GmbH Pump assembly with an adjustable speed motor
CA2186797A1 (en) * 1995-10-17 1997-04-18 Edward L. Thies Dishwasher having a wash liquid recirculation system
EP0943282A2 (en) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Dishwasher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237994A2 (en) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Washing machine having a liquid flow distribution valve
EP0547011A1 (en) * 1991-12-11 1993-06-16 Colged S.R.L. A washing method for a dishwashing machine of industrial type
EP0610766A1 (en) * 1993-02-06 1994-08-17 Licentia Patent-Verwaltungs-GmbH Pump assembly with an adjustable speed motor
CA2186797A1 (en) * 1995-10-17 1997-04-18 Edward L. Thies Dishwasher having a wash liquid recirculation system
EP0943282A2 (en) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Dishwasher

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1240863A2 (en) * 2001-02-07 2002-09-18 T & P S.p.A. Bypass valve for washing machine and relative methods of application
EP1240863A3 (en) * 2001-02-07 2002-12-18 T & P S.p.A. Bypass valve for washing machine and relative methods of application
EP1669017A1 (en) * 2004-12-11 2006-06-14 Electrolux Home Products Corporation N.V. Method for operating a dishwasher
EP2156778A3 (en) * 2008-08-21 2011-05-18 LG Electronics Inc. Dishwasher and controlling method thereof
EP2156778B1 (en) 2008-08-21 2016-09-21 LG Electronics Inc. Dishwasher and controlling method thereof
EP2798993A3 (en) * 2013-04-29 2015-01-14 Miele & Cie. KG Device for performing a flushing programme

Also Published As

Publication number Publication date
ATE326897T1 (en) 2006-06-15
EP1029496A3 (en) 2000-11-22
DE50012795D1 (en) 2006-06-29
DE19907188A1 (en) 2000-08-24
ES2264913T3 (en) 2007-02-01
EP1029496B1 (en) 2006-05-24

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