WO2009004014A1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

Info

Publication number
WO2009004014A1
WO2009004014A1 PCT/EP2008/058468 EP2008058468W WO2009004014A1 WO 2009004014 A1 WO2009004014 A1 WO 2009004014A1 EP 2008058468 W EP2008058468 W EP 2008058468W WO 2009004014 A1 WO2009004014 A1 WO 2009004014A1
Authority
WO
WIPO (PCT)
Prior art keywords
dishwasher
turbidity
water
pump motor
speed
Prior art date
Application number
PCT/EP2008/058468
Other languages
English (en)
Inventor
Songul Bayraktar
Bulent Kucukcoskun
Ebru Cetinkaya
Original Assignee
Arcelik Anonim Sirketi
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
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PL08774611T priority Critical patent/PL2175766T3/pl
Priority to DE602008002949T priority patent/DE602008002949D1/de
Priority to EP08774611A priority patent/EP2175766B1/fr
Priority to AT08774611T priority patent/ATE483392T1/de
Publication of WO2009004014A1 publication Critical patent/WO2009004014A1/fr

Links

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
    • A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
    • 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
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention

Definitions

  • the present invention relates to dishwashers comprising a turbidity sensor.
  • a washing program is implemented that is comprised of various steps such as pre-washing, main washing and rinsing.
  • turbidity sensors are used for detecting the dirt of the dishes placed in the machine or whether the dishes are properly cleaned after washing.
  • these turbidity sensors used are affected by factors such as intake of water into the washing chamber and the rotational speed of the spray arms and as a result the measurement cannot be performed accurately.
  • the aim of the present invention is the realization of a dishwasher wherein the program and program parameter selection based on turbidity detection is made with high accuracy.
  • a turbidity sensor is used for measuring the turbidity of water in order to detect the dirt amount of the dishes for determining the washing program steps and the parameters such as water temperature, duration etc. relating to these steps.
  • the turbidity sensor performs all the measurement activities while the working conditions of the spray arms are at a constant value predetermined by the producer.
  • the turbidity sensor takes measurements only while the upper spray arm is rotating. Accordingly, measurement is taken while water is sprayed into the washing chamber with a lower pressure thereby minimizing the deviation in the measurement.
  • the turbidity measurements are taken while both of the spray arms are rotating. Thus, measurements are made with identical deviations without disrupting the normal working process by taking the measurement in a frequent condition of the dishwasher during washing.
  • the turbidity is measured while the speed of the pump motor actuating the spray arms is at value predetermined by the producer.
  • the speed of the pump motor predetermined by the producer for taking measurements is not a speed at which the pump motor operates normally during the program steps of the dishwasher. For example, while the pump motor is operated at 2500-3000 rpm speed, the speed of the pump motor is reduced to 1500 rpm and measurement is performed when the turbulence that will cause deviation in the sprayed water is lower.
  • Figure 1 - is the schematic view of a dishwasher.
  • the dishwasher (1) provides cleaning of the dishes in accordance with a washing program that includes at least some of the various steps like pre-washing, main washing, rinsing, drying, regeneration.
  • the dishwasher (1) comprises a washing chamber (2) wherein the dishes to be washed are emplaced, at least one spray arm (4, 104) that sprays water on the dishes while rotating around its axis, at least one pump motor (3) for the water to be circulated and to be sprayed from the spray arms (4, 104), at least one turbidity sensor (5) that performs the wash water turbidity measurements in order to detect the dirtiness of the dishes while the speed (w) of the pump motor (3) is only at a constant value predetermined by the producer and/or while water is directed to always the same spray arm/spray arms (4, 104) ( Figure 1).
  • two spray arms (4, 104), an upper (4) one and a lower (104) one, are used.
  • the turbidity sensor (5) takes measurements only while the upper spray arm (4) is rotating.
  • the turbidity sensor (5) takes measurements while both of the spray arms (4, 104) are rotating.
  • a variable speed, brushless direct current pump motor (3) is used.
  • the turbidity sensor (5) takes measurements while the speed (w) of the pump motor (3) is at a value (w m ) predetermined by the producer.
  • the speed (w m ) of the pump motor (3) predetermined by the producer for taking measurements is a speed not normally used by the pump motor (3) during the program steps of the dishwasher (1).
  • the speed of the pump motor (3) is reduced to 1500 rpm and turbidity measurement is performed at this speed.
  • the deviation in the measurement of the turbidity sensor (5) caused by the turbulence generated due to the speed and direction of water intake into the washing chamber (2) or the motion of the spray arms (4, 104) during the washing steps is maintained to be constant thereby increasing the accuracy in selections of program and program parameters performed in accordance with the data received from the turbidity sensor (5).

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Table Devices Or Equipment (AREA)
  • Lubricants (AREA)
  • Harvesting Machines For Specific Crops (AREA)

Abstract

L'invention concerne un lave-vaisselle (1) dans lequel on maintient constant l'écart relatif à la mesure fournie par le capteur de turbidité (5) qui survient suite à la turbulence qu'engendrent la direction de l'eau et la vitesse d'admission dans la chambre de lavage (2) ou le mouvement des bras pulvérisateurs (4, 104) durant les étapes de lavage, ce qui permet d'effectuer les sélections de programme et de paramètres de programme avec une précision élevée.
PCT/EP2008/058468 2007-07-02 2008-07-02 Lave-vaisselle WO2009004014A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL08774611T PL2175766T3 (pl) 2007-07-02 2008-07-02 Zmywarka do naczyń
DE602008002949T DE602008002949D1 (de) 2007-07-02 2008-07-02 Geschirrspülmaschine
EP08774611A EP2175766B1 (fr) 2007-07-02 2008-07-02 Lave-vaisselle
AT08774611T ATE483392T1 (de) 2007-07-02 2008-07-02 Geschirrspülmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200704577 2007-07-02
TRA2007/04577 2007-07-02

Publications (1)

Publication Number Publication Date
WO2009004014A1 true WO2009004014A1 (fr) 2009-01-08

Family

ID=39720111

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/058468 WO2009004014A1 (fr) 2007-07-02 2008-07-02 Lave-vaisselle

Country Status (5)

Country Link
EP (1) EP2175766B1 (fr)
AT (1) ATE483392T1 (fr)
DE (1) DE602008002949D1 (fr)
PL (1) PL2175766T3 (fr)
WO (1) WO2009004014A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2201885B2 (fr) † 2008-12-22 2020-07-08 Whirlpool EMEA S.p.A Lave-vaisselle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040079400A1 (en) * 2002-10-25 2004-04-29 Young Raymond A. Dishwasher having a variable speed circulation pump controlled responsive to sensed turbidity
US20040216774A1 (en) * 2003-04-29 2004-11-04 Miele & Cie. Kg Device for a turbidity sensor for a dishwasher or washing machine
EP1543764A2 (fr) * 2003-12-19 2005-06-22 Electrolux Home Products Corporation N.V. Lave-vaisselle avec distributeur de fluide et procédé pour la commutation du distributeur
US20050268948A1 (en) * 2004-06-05 2005-12-08 Jeong Mun G Sump assembly for dishwasher
US20060021637A1 (en) * 2004-07-28 2006-02-02 Lg Electronics Inc. Sump assembly in dishwasher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040079400A1 (en) * 2002-10-25 2004-04-29 Young Raymond A. Dishwasher having a variable speed circulation pump controlled responsive to sensed turbidity
US20040216774A1 (en) * 2003-04-29 2004-11-04 Miele & Cie. Kg Device for a turbidity sensor for a dishwasher or washing machine
EP1543764A2 (fr) * 2003-12-19 2005-06-22 Electrolux Home Products Corporation N.V. Lave-vaisselle avec distributeur de fluide et procédé pour la commutation du distributeur
US20050268948A1 (en) * 2004-06-05 2005-12-08 Jeong Mun G Sump assembly for dishwasher
US20060021637A1 (en) * 2004-07-28 2006-02-02 Lg Electronics Inc. Sump assembly in dishwasher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2201885B2 (fr) † 2008-12-22 2020-07-08 Whirlpool EMEA S.p.A Lave-vaisselle

Also Published As

Publication number Publication date
ATE483392T1 (de) 2010-10-15
DE602008002949D1 (de) 2010-11-18
EP2175766A1 (fr) 2010-04-21
EP2175766B1 (fr) 2010-10-06
PL2175766T3 (pl) 2011-01-31

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