EP1732433B1 - Geschirrspülmaschine und steuerverfahren - Google Patents

Geschirrspülmaschine und steuerverfahren Download PDF

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Publication number
EP1732433B1
EP1732433B1 EP05702820A EP05702820A EP1732433B1 EP 1732433 B1 EP1732433 B1 EP 1732433B1 EP 05702820 A EP05702820 A EP 05702820A EP 05702820 A EP05702820 A EP 05702820A EP 1732433 B1 EP1732433 B1 EP 1732433B1
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EP
European Patent Office
Prior art keywords
flow rate
circulating pump
spraying arm
low
water
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
EP05702820A
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English (en)
French (fr)
Other versions
EP1732433A1 (de
Inventor
Songul Bayraktar
Ertan Cetinkaya
Bulent Kucukcoskun
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Publication date
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Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL05702820T priority Critical patent/PL1732433T3/pl
Publication of EP1732433A1 publication Critical patent/EP1732433A1/de
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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
    • A47L15/0052—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
    • 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
    • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
    • 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
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • 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
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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

  • This invention relates to a dishwasher with an improved washing performance and a control method thereof.
  • the washing process is accomplished by spraying water, simultaneously or consecutively, from the lower and upper sprayers to the items to be washed which are placed onto the lower and upper baskets. Since, generally, very dirty dishes are placed to the lower basket and slightly dirty dishes to the upper basket; the lower sprayer is supplied with high-pressure water while the upper sprayer is supplied with low-pressure water. Usually, the lower and upper sprayers are operated consecutively, and by alternately supplying the sprayers, water and energy is used to heat the water are saved.
  • an interval program is selectable; in a first interval only the upper spraying lever and in a second interval only the lower spraying lever is supplying rinsing liquid and the number of revolutions of the pump motor is adjustable as a function of the respective interval.
  • the revolution rate of the circulating pump is regulated according to the varying supply amount, during a changeover from one sprayer or group of sprayers to another.
  • the aim of the present invention is the realization of a dishwasher and a control method thereof wherein water is saved and the washing performance is increased.
  • Fig.1 - is a schematic representation of a dishwasher.
  • Fig.2 - is a graph illustrating the change of the number of revolutions of the circulating pump according to the active periods of the spraying arms, in a dishwasher in accordance with the current state of the art.
  • Fig.3 - is a graph illustrating the change of the number of revolutions of the circulating pump according to the active periods of the spraying arms, in a dishwasher in accordance with the application of the present invention.
  • Fig.4, 5 - are graphs illustrating the change of the number of revolutions of the circulating pump according to the active periods of the spraying arms, in a dishwasher in accordance with alternative applications of the present invention.
  • Fig. 6 is a similar graph, in a dishwasher which does not form part of the invention but represents background art that is useful for understanding the invention.
  • the dishwasher (1) comprises a washing tank (2) where the items to be washed are placed in, a sump (3) at the bottom of the washing tank (2), where the water in the washing tank (2) accumulates during the washing process, a heater (7) used to heat the washing water, which preferably operates during the circulation of the washing water, a circulating pump (4) which supplies the water in the sump (3) back to the washing tank (2) and, is driven by an electric motor with variable speed, a multi-way valve (5) at the outlet of the circulating pump (4) which provides that the water to be send to both or either one of the lower and upper supply lines, a discharge pump (6) whereby the water accumulated in the sump (3) at the end of the washing process, is discharged out of the dishwasher (1), a filter (8) which prevents the dirt particles from reducing the washing efficiency by entering the circulation, more than one baskets (11, 111) where the items that are washed are placed, a high flow rate spraying arm (12) used for very dirty dishes, wherein the water is sprayed at a high flow rate
  • the number of revolutions of the circulating pump (4) is kept constant during a changeover from the high flow rate spraying arm (12) to the low flow rate spraying arm (112) and from the low flow rate spraying arm (112) to the high flow rate spraying arm (12), whereas the number of revolutions of the circulating pump (4) is changed before or after a changeover from one spraying arm (12, 112) to another, at a different time than the changeover period.
  • N1 is the number of revolutions of the circulating pump (4), for the spraying arms (12, 112) to spray water at a high flow rate.
  • N2 is the number of revolutions of the circulating pump (4), for the spraying arms (12, 112) to spray water at a low flow rate.
  • T1 is the predetermined cycle time of the spraying arm (12) which mostly sprays water at a high flow rate, during consecutive operating.
  • T2 is the predetermined cycle time of the spraying arm (112) which mostly sprays water at a low flow rate, during consecutive operating.
  • P is the changeover period when the cycle time of one of the spraying arms (12, 112) ends and the cycle time of the other one begins.
  • ⁇ T1 is the predetermined time interval in one cycle time (T1) of the high flow rate spraying arm (12) when the said spraying arm is supplied with water at a low flow rate, during consecutive operating.
  • ⁇ T2 is the predetermined time interval in one cycle time (T2) of the low flow rate spraying arm (112) when the said spraying arm is supplied with water at a high flow rate, during consecutive operating.
  • the circulating pump (4) is operated at a high revolution rate (N I) for a period of T1- ⁇ T1 whereas it is operated at a low revolution rate (N2) for a period of ⁇ T1, considering the high flow rate spraying arm (12).
  • N I revolution rate
  • N2 revolution rate
  • the cycle time (T1) of the high flow rate spraying arm (12) ends and the cycle time (T2) of the low flow rate spraying arm (112) begins.
  • the circulating pump (4) is operated at a low revolution rate (N2) for a period of T2 - ⁇ T2 whereas it is operated at a high revolution rate (N1) for a period of ⁇ T2.
  • N2 low revolution rate
  • N1 high revolution rate
  • P changeover period
  • the cycle time (T2) of the low flow rate spraying arm (112) ends and the cycle time (T1) of the high flow rate spraying arm (12) begins ( Fig.3 ).
  • the high flow rate spraying arm (12) is operated while the circulating pump (4) is at a high revolution rate (N1), whereas the revolution rate is decreased (N2) at the end of the cycle time (T1) for a period of ⁇ T1 and, at the changeover point (P) while the circulating pump (4) continues to operate at a low revolution rate (N2), the cycle time (T2) of the low flow rate spraying arm (112) begins, and it ends with the same revolution rate (N2) ( Fig. 4 ).
  • the low flow rate spraying arm (112) is operated while the circulating pump (4) is at a low revolution rate (N2), whereas the revolution rate is increased (N1) at the end of the cycle time (T2) for a period of ⁇ T2 and, at the changeover point (P) while the circulating pump (4) continues to operate at a high revolution rate (N1), the cycle time (T1) of the high flow rate spraying arm (12) begins, and it ends with the same revolution rate (N1) ( Fig. 5 ).
  • the spraying arms (12, 112) are operated simultaneously at the same revolution rate (N2) by also supplying the low flow rate spraying arm (112) via a multi-way valve (5) during the period #T1 when the flow rate of the water sprayed by the high flow rate spraying arm (12) is reduced, and similarly, that for the period ⁇ T2, the spraying arms (12, 112) arc operated simultaneously at the same revolution rate (N1) by also supplying the high flow rate spraying arm (12) via a multi-way valve (5) during the period ⁇ T2 when the flow rate of the water sprayed by the low flow rate spraying arm (12) is increased, and thereby it is accomplished to prevent the noise generated at the multi-way valve (5) and water-carrying pipes as a result of the sudden flow acceleration at the time of a changeover from one spraying arm (12, 112) to another during consecutive operating ( Fig. 6 ).
  • the subject of the present invention it is achieved to prevent the noise generated as a result of the sudden flow acceleration at the time of a changeover from one spraying arm (12, 112) to another, by fixing the number of revolutions of the circulating pump (4) during the changeover and, to increase the washing performance by changing the revolution rate of the circulating pump (4) at predetermined time intervals inside the cycle times of the spraying arms (12, 112).

Claims (5)

  1. Geschirrspüler (1), umfassend einen Sumpf (3), in dem sich während des Spülvorgangs Wasser ansammelt, eine Zirkulationspumpe (4), die das Wasser im Sumpf (3) zurückleitet und von einem Elektromotor mit variabler Drehzahl angetrieben wird, einen Sprüharm mit hoher Durchflussgeschwindigkeit (12), wobei das Wasser mit hoher Durchflussgeschwindigkeit auf die zu spülenden Artikel gesprüht wird, indem die Zirkulationspumpe (4) hauptsächlich bei einer hohen Drehzahl betrieben wird, und einen einen Sprüharm mit niedriger Durchflussgeschwindigkeit (112), wobei das Wasser mit niedriger Durchflussgeschwindigkeit gesprüht wird, indem die Zirkulationspumpe (4) hauptsächlich bei einer niedrigen Drehzahl betrieben wird, während die Sprüharme (12, 112) aufeinanderfolgend betätigt werden, wobei die Drehzahl der Zirkulationspumpe (4) bei der hohen Drehzahl oder der niedrigen Drehzahl während einer Umschaltperiode (P) vom Sprüharm mit hoher Durchflussgeschwindigkeit (12) zum Sprüharm mit niedriger Durchflussgeschwindigkeit (112) und vom Sprüharm mit niedriger Durchflussgeschwindigkeit (112) zum Sprüharm mit hoher Durchflussgeschwindigkeit (12) konstant gehalten wird, dadurch gekennzeichnet, dass die Drehzahl der Zirkulationspumpe (4) in einem im Voraus festgelegten Zeitintervall (ΔT1, ΔT2) vor und/oder nach einer Umschaltperiode (P) von einem Sprüharm (12, 112) zum anderen geändert wird.
  2. Steuerverfahren für einen Geschirrspüler (1), umfassend einen Sumpf (3), in dem sich während des Spülvorgangs Wasser ansammelt, eine Zirkulationspumpe (4), die das Wasser im Sumpf (3) zurückleitet und von einem Elektromotor mit variabler Drehzahl angetrieben wird, einen Sprüharm mit hoher Durchflussgeschwindigkeit (12), wobei das Wasser mit hoher Durchflussgeschwindigkeit auf die zu spülenden Artikel gesprüht wird, indem die Zirkulationspumpe (4) hauptsächlich bei einer hohen Drehzahl betrieben wird, und einen einen Sprüharm mit niedriger Durchflussgeschwindigkeit (112), wobei das Wasser mit niedriger Durchflussgeschwindigkeit gesprüht wird, indem die Zirkulationspumpe (4) hauptsächlich bei einer niedrigen Drehzahl betrieben wird, während die Sprüharme (12, 112) aufeinanderfolgend betätigt werden, folgende Schritte umfassend:
    - Konstanthalten der Drehzahl der Zirkulationspumpe (4) bei der hohen Drehzahl oder der niedrigen Drehzahl während einer Umschaltperiode (P) vom Sprüharm mit hoher Durchflussgeschwindigkeit (12) zum Sprüharm mit niedriger Durchflussgeschwindigkeit (112) und vom Sprüharm mit niedriger Durchflussgeschwindigkeit (112) zum Sprüharm mit hoher Durchflussgeschwindigkeit (12), und
    - Ändern der die Drehzahl der Zirkulationspumpe (4) in einem im Voraus festgelegten Zeitintervall (ΔT1, ΔT2) vor und/oder nach einer Umschaltperiode (P) von einem Sprüharm (12, 112) zum anderen.
  3. Steuerverfahren für einen Geschirrspüler (1) nach Anspruch 2, folgende Schritte umfassend: während die Sprüharme (12, 112) aufeinanderfolgend betätigt werden, wird die Zirkulationspumpe (4) für einen Zeitraum T1-ΔT1 unter Berücksichtigung des Sprüharms mit hoher Durchflussgeschwindigkeit (12) bei einer hohen Drehzahl (N1) betrieben; wohingegen die Zirkulationspumpe (4) für einen Zeitraum ΔT1 bei einer niedrigen Drehzahl (N2) betätigt wird; in der Umschaltperiode (P) endet die Zykluszeit (T1) des Sprüharms mit hoher Durchflussgeschwindigkeit (12), während die Zirkulationspumpe (4) weiterhin bei einer niedrigen Drehzahl (N2) arbeitet; die Zykluszeit (T2) des Sprüharms mit niedriger Durchflussgeschwindigkeit (112) beginnt; die Zirkulationspumpe (4) wird für einen Zeitraum T2-ΔT2 bei einer niedrigen Drehzahl (N2) betrieben; wohingegen die Zirkulationspumpe (4) für einen Zeitraum ΔT2 bei einer hohen Drehzahl (N1) betrieben wird; in der Umschaltperiode (P) endet die Zykluszeit (T2) des Sprüharms mit niedriger Durchflussgeschwindigkeit (112) und die Zykluszeit (T1) des Sprüharms mit hoher Durchflussgeschwindigkeit (12) beginnt, während die Zirkulationspumpe (4) weiterhin bei einer hohen Drehzahl (N1) arbeitet.
  4. Steuerverfahren für einen Geschirrspüler (1) nach Anspruch 2, wobei die Drehzahl der Zirkulationspumpe (4) während der Zykluszeit (T2) des Sprüharms mit niedriger Durchflussgeschwindigkeit (112) konstant gehalten wird.
  5. Steuerverfahren für einen Geschirrspüler (1) nach Anspruch 2, wobei die Drehzahl der Zirkulationspumpe (4) während der Zykluszeit (T1) des Sprüharms mit hoher Durchflussgeschwindigkeit (12) konstant gehalten wird.
EP05702820A 2004-01-29 2005-01-27 Geschirrspülmaschine und steuerverfahren Active EP1732433B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05702820T PL1732433T3 (pl) 2004-01-29 2005-01-27 Zmywarka do naczyń oraz sposób sterowania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400171 2004-01-29
PCT/IB2005/050365 WO2005072595A1 (en) 2004-01-29 2005-01-27 A dishwasher and a control method

Publications (2)

Publication Number Publication Date
EP1732433A1 EP1732433A1 (de) 2006-12-20
EP1732433B1 true EP1732433B1 (de) 2013-01-09

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ID=34825346

Family Applications (1)

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EP05702820A Active EP1732433B1 (de) 2004-01-29 2005-01-27 Geschirrspülmaschine und steuerverfahren

Country Status (5)

Country Link
EP (1) EP1732433B1 (de)
ES (1) ES2402550T3 (de)
PL (1) PL1732433T3 (de)
TR (1) TR200603708T1 (de)
WO (1) WO2005072595A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101405930B1 (ko) * 2007-07-05 2014-06-12 엘지전자 주식회사 식기 세척기의 제어방법
KR101526987B1 (ko) 2008-08-21 2015-06-11 엘지전자 주식회사 식기 세척기 및 그 제어방법
US8210191B2 (en) 2008-12-09 2012-07-03 General Electric Company Dishwasher having multi-mode spray arm system
US8092611B2 (en) 2009-01-29 2012-01-10 General Electric Company Method and system for dishwasher operation
DE102013208060A1 (de) 2013-05-02 2014-11-06 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung für Behälter für menschliche Ausscheidungen
DE102014200383B4 (de) * 2014-01-13 2018-02-15 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät und Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5924432A (en) * 1995-10-17 1999-07-20 Whirlpool Corporation Dishwasher having a wash liquid recirculation system
DE19907157A1 (de) * 1999-02-19 2000-08-24 Bsh Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine
DE19907189A1 (de) * 1999-02-19 2000-08-24 Bsh Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine
IT1311214B1 (it) * 1999-03-29 2002-03-04 Electrolux Zanussi Elettrodome Lavastoviglie con getti d'acqua pulsanti

Also Published As

Publication number Publication date
TR200603708T1 (tr) 2006-10-26
PL1732433T3 (pl) 2013-06-28
WO2005072595A1 (en) 2005-08-11
ES2402550T3 (es) 2013-05-06
EP1732433A1 (de) 2006-12-20

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