WO2006033027A1 - Lave-vaisselle a commande a modulation par impulsion de duree variable - Google Patents

Lave-vaisselle a commande a modulation par impulsion de duree variable Download PDF

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Publication number
WO2006033027A1
WO2006033027A1 PCT/IB2005/052291 IB2005052291W WO2006033027A1 WO 2006033027 A1 WO2006033027 A1 WO 2006033027A1 IB 2005052291 W IB2005052291 W IB 2005052291W WO 2006033027 A1 WO2006033027 A1 WO 2006033027A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
washing
dishwasher
standard deviation
pwm
Prior art date
Application number
PCT/IB2005/052291
Other languages
English (en)
Inventor
Orhan Diril
Kerem Erenay
Alper Baykut
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 AT05805021T priority Critical patent/ATE439795T1/de
Priority to TR2007/00213T priority patent/TR200700213T1/xx
Priority to DE602005016124T priority patent/DE602005016124D1/de
Priority to EP05805021A priority patent/EP1778068B1/fr
Publication of WO2006033027A1 publication Critical patent/WO2006033027A1/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
    • A47L15/0018—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
    • 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
    • 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
    • A47L2501/26—Indication or alarm to the controlling device or to the user

Definitions

  • This invention relates to a dishwasher wherein the washing performance is improved.
  • the washing performance of dishwashers can be adversely affected according to conditions of use like the amount of water taken into the washing chamber, the amount of load, soil level of load and viscosity change of water in relation to the kind of soil, clogging of filters by the high density of soil, increase of foaming or misuse. It is attempted to improve the washing performance by the use of optimum amounts of water and electrical energy through appropriate washing algorithms obtained by data compiled by detecting the afore mentioned adverse conditions.
  • the washing operation in a dishwasher is determined by the way the circulation pump operates.
  • the washing performance is improved by the circulation pump functioning at variable r.p.m.'s and by the continuity of circulation with relative speeds conforming to conditions.
  • the water circulation and the spraying system in the dishwasher can lead to excess water intake and high speed circulation depending on the amount of load, the distribution of load, the amount of water intake and the rotation speed of pump, thus resulting in high water consumption together with more use of electric energy both for the heating and the circulation of water.
  • the pump In order to provide uninterrupted circulation, the pump needs sufficient amount of water with respect to the speed employed.
  • uninterrupted circulation is applied with sufficient amount of water, the difference in the input-output pressure of the pump, the power required for constant pump drive, the output power of the motor that drives the pump and the current drawn from the network by the pump motor remains constant. Lack of sufficient amount of water for the continuity of circulation results in a pressure difference between pump input-output thus leading to change in the power that should be drawn from the drive motor.
  • the current drawn from the power supply network by the drive motor demonstrates a likewise change.
  • This operation conditions can be detected by measuring the operation conditions, motor current, number of revolutions or pump pressure, however, the need arises for an additional device, sensor or electronic evaluation equipment for the afore mentioned measurements, thus leading to a rise in the cost of the commodity.
  • German Patent No. DE2646383 describes the case wherein water is taken in up to a maximum level following the pressure measurement by a pressure detector placed at pump outlet and with repeated inlet and discharge of water it is attempted to remove the foam and soil.
  • the aim of the present invention is to realize a dishwasher wherein the washing performance is improved without the need for extra measuring devices or sensors by detecting the adverse elements affecting the washing performance through the ob ⁇ servations carried out on the continuous circulation of water.
  • Figure 2 A voltage - time graph showing the adjustment of the input voltage to supply the motor in a dishwasher.
  • FIG. 3 to 6 The PWM - time graphs illustrating the state of the dishwasher when the amount of water in the washing tank increases in consecutive phases.
  • Figure 7 The PWM - time graphs illustrating the state of the dishwasher when washing water does not return as the consequence of being held on the load or when the load is increased in a dishwasher.
  • Figure 8 The PWM - time graph illustrating the state of the dishwasher when there is foaming of washing water.
  • Figure 9 The PWM - time graph illustrating the state when there is clogging of the filter in a dishwaher.
  • Figure 10- The PWM - time graph illustrating the state when the viscosity of the washing water in a dishwasher increases.
  • the said dishwasher(l) comprises of a washing tank (2) wherein dishware is placed, a washing chamber (3) positioned below the washing tank (2) to collect water in the washing tank (2) during the washing process, a circulation pump (4) which transfers water in the washing chamber (3) onto the dishware in the washing tank (2) thus attaining circulation, a variable speed DC (direct current) motor (5), preferably brushless, that drives the circulation pump (4), a drain pump (6) that discharges the water collected in the washing tub (3) to the outside of the dishwasher (1) upon completion of the washing process, preferably PI (proportional integral) or PID (proportional integral derivative) type speed controller (7) which maintains the motor speed at a determined speed by comparing the real speed of the motor with a preset reference speed , a control card (8) which observes the modulations of PWM dutycycle rate determined by the PWM (pulse width modulation) drives of the output signals of speed controller (7) in relation to time and a control card (8) that adjusts motor (5) input voltage using standard deviation and mean average information
  • the speed controller (7) constantly compares the real speed of the motor (5) with the reference speed and tries to adjust the motor speed to the reference level.
  • the motor (5) chops the input voltage (V ), dc applies V and V voltages in T and T periods relatively, reaching the phase control switch with square waving, wherein the transformed voltage (V app ) reaches the desired value and reaches the motor (5) via the motor (5) phase control switch .
  • the output signal of speed controller (7) is generated as PWM (pulse width modulation) control signals.
  • the control card (8) starting out with PWM signals reaches the variation data of T /(T +T ) ratio with respect to time. T /(T +T ) ratio is denoted as PWM (pulse width modulation) dutycycle.
  • the PWM dutycycle is perceived as a graphic that changes with time according to the varying power requirement of the motor (5), the PWM dutycycle generates different profiles that express different operating conditions of the motor (5) confronted with various load conditions.
  • the input voltage (V dc ) is controlled by a low value PWM dutycycle, the applied voltage (V app ) to the motor (5) is low, whereas if controlled by a high value PWM dutycycle, the applied voltage (V app ) to the motor (5) is high.
  • V dc *PWM dutycycle R * I + E where it can be seen that the PWM dutycycle is directly proportional to current (I) .
  • the circulation pump (4) gradually needs more power to pump the water (Figure 10).
  • the circulation pump (4) is operated at a low rotation speed, if no improvement is observed in PWM dutycycle, then it is decided that washing water is not suitable and washing water is drained and clean water is taken in.
  • the average and standard deviations of PWM dutycycle are observed by the control card (8) for detecting and solving problems like the amount of water required for continuity of circulation, correct amount of water intake relative to load, foaming, increase in viscosity, clogging of filter, and due to precise measurements obtained and easy inter ⁇ pretation of observed data, there is no need for extra measurement devices for detecting the input current (I) drawn by the motor (5), the rotation moment (M) executed by the motor shaft and the pressure (P) of the circulation pump (4).

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un lave-vaisselle (1) dans lequel les signaux produits par le régulateur de vitesse (7) du moteur à vitesse variable (5) qui entraîne la pompe de circulation (4) sont observés par la carte de commande (9) et la tension d'entrée du moteur (5) est ajustée. Des éléments qui altèrent la capacité de lavage, comme le colmatage du filtre, le moussage, l'augmentation de la viscosité ou une quantité inappropriée d'eau dans la chambre de lavage (3) sont détectés.
PCT/IB2005/052291 2004-07-21 2005-07-11 Lave-vaisselle a commande a modulation par impulsion de duree variable WO2006033027A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT05805021T ATE439795T1 (de) 2004-07-21 2005-07-11 Geschirrspülmaschine mit pulsweitenmodulatorsteuerung
TR2007/00213T TR200700213T1 (tr) 2004-07-21 2005-07-11 Darbe genişlik modülasyonu olan bir bulaşık makinası
DE602005016124T DE602005016124D1 (de) 2004-07-21 2005-07-11 Geschirrspülmaschine mit pulsweitenmodulatorsteuerung
EP05805021A EP1778068B1 (fr) 2004-07-21 2005-07-11 Lave-vaisselle a commande a modulation par impulsion de duree variable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2004/01786 2004-07-21
TR200401786 2004-07-21

Publications (1)

Publication Number Publication Date
WO2006033027A1 true WO2006033027A1 (fr) 2006-03-30

Family

ID=35056864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/052291 WO2006033027A1 (fr) 2004-07-21 2005-07-11 Lave-vaisselle a commande a modulation par impulsion de duree variable

Country Status (6)

Country Link
EP (1) EP1778068B1 (fr)
AT (1) ATE439795T1 (fr)
DE (1) DE602005016124D1 (fr)
ES (1) ES2330029T3 (fr)
TR (1) TR200700213T1 (fr)
WO (1) WO2006033027A1 (fr)

Cited By (11)

* 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
WO2009143220A1 (fr) * 2008-05-21 2009-11-26 Premark Feg L.L.C. Procédé de fonctionnement d'un lave-vaisselle et lave-vaisselle
WO2011128176A1 (fr) * 2010-04-14 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle avec détection de dysfonctionnement
DE102011075020A1 (de) * 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
ITTO20111247A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di uno o più recipienti posizionati con concavità rivolte verso l'alto all'interno di detta lavastoviglie
ITTO20111249A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di una perdita di liquido da detta lavastoviglie
ITTO20111246A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di schiuma all'interno di detta lavastoviglie
ITTO20111248A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di un mancato afflusso di acqua all'interno di detta lavastoviglie
EP2609845A1 (fr) * 2011-12-30 2013-07-03 Indesit Company S.p.A. Lave-vaisselle et méthode de détection d'anomalies de fonctionnement.
WO2018137988A1 (fr) * 2017-01-30 2018-08-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Dispositif et procédé de détection d'un colmatage de filtre
WO2022002557A1 (fr) * 2020-06-30 2022-01-06 BSH Hausgeräte GmbH Lave-vaisselle, procédé de fonctionnement d'un lave-vaisselle et produit de programme informatique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9220393B2 (en) 2012-09-13 2015-12-29 Whirlpool Corporation Dishwasher with controlled rotation of lower spray arm
KR102584504B1 (ko) 2018-08-29 2023-10-05 베스텔 일렉트로닉 사나이 베 티카레트 에이에스 식기세척기 및 방법

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400877A1 (de) * 1994-01-14 1995-07-20 Licentia Gmbh Verfahren zur Erkennung verschmutzter Siebe in Haushalt-Geschirrspülmaschinen
DE4418721A1 (de) * 1994-05-28 1995-11-30 Licentia Gmbh Steuerungsverfahren für Laugenumwälz-Pumpen in Haushalt-Geschirrspülmaschinen
DE19630357A1 (de) * 1996-07-26 1998-02-05 Aweco Kunststofftech Geraete Vorrichtung zur Regelung der Wassermenge in vorzugsweise Spülmaschinen
EP0838192A1 (fr) * 1996-09-26 1998-04-29 BITRON S.p.A. Dispositif pour surveiller la marche du moteur de lavage d'une machine à laver la vaisselle
DE19736347A1 (de) * 1997-08-21 1999-02-25 Wunnibald Kunz Einrichtung zur Dosierung der optimalen Wassermenge in einem Geschirrspüler
EP1211344A1 (fr) * 2000-12-04 2002-06-05 Whirlpool Corporation Machine à laver avec détecteur pour la mesure en continu du niveau d'eau
WO2002058225A1 (fr) * 2001-01-04 2002-07-25 Aquadane Aps Procede et appareil permettant de commander un moteur electrique et utilisation dudit appareil
US20040019979A1 (en) * 2000-12-01 2004-02-05 Jea-Kyum Kim Method for controlling speed in drum-type washing machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400877A1 (de) * 1994-01-14 1995-07-20 Licentia Gmbh Verfahren zur Erkennung verschmutzter Siebe in Haushalt-Geschirrspülmaschinen
DE4418721A1 (de) * 1994-05-28 1995-11-30 Licentia Gmbh Steuerungsverfahren für Laugenumwälz-Pumpen in Haushalt-Geschirrspülmaschinen
DE19630357A1 (de) * 1996-07-26 1998-02-05 Aweco Kunststofftech Geraete Vorrichtung zur Regelung der Wassermenge in vorzugsweise Spülmaschinen
EP0838192A1 (fr) * 1996-09-26 1998-04-29 BITRON S.p.A. Dispositif pour surveiller la marche du moteur de lavage d'une machine à laver la vaisselle
DE19736347A1 (de) * 1997-08-21 1999-02-25 Wunnibald Kunz Einrichtung zur Dosierung der optimalen Wassermenge in einem Geschirrspüler
US20040019979A1 (en) * 2000-12-01 2004-02-05 Jea-Kyum Kim Method for controlling speed in drum-type washing machine
EP1211344A1 (fr) * 2000-12-04 2002-06-05 Whirlpool Corporation Machine à laver avec détecteur pour la mesure en continu du niveau d'eau
WO2002058225A1 (fr) * 2001-01-04 2002-07-25 Aquadane Aps Procede et appareil permettant de commander un moteur electrique et utilisation dudit appareil

Cited By (16)

* 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
WO2009143220A1 (fr) * 2008-05-21 2009-11-26 Premark Feg L.L.C. Procédé de fonctionnement d'un lave-vaisselle et lave-vaisselle
WO2011128176A1 (fr) * 2010-04-14 2011-10-20 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle avec détection de dysfonctionnement
CN102843948A (zh) * 2010-04-14 2012-12-26 Bsh博世和西门子家用电器有限公司 可识别故障的洗碗机
US9445703B2 (en) 2010-04-14 2016-09-20 BSH Hausgeräte GmbH Dishwasher with fault identification
DE102011075020A1 (de) * 2011-04-29 2012-10-31 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine
ITTO20111248A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di un mancato afflusso di acqua all'interno di detta lavastoviglie
ITTO20111246A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di schiuma all'interno di detta lavastoviglie
ITTO20111249A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di una perdita di liquido da detta lavastoviglie
EP2609845A1 (fr) * 2011-12-30 2013-07-03 Indesit Company S.p.A. Lave-vaisselle et méthode de détection d'anomalies de fonctionnement.
ITTO20111247A1 (it) * 2011-12-30 2013-07-01 Indesit Co Spa Lavastoviglie e metodo per la rilevazione di uno o più recipienti posizionati con concavità rivolte verso l'alto all'interno di detta lavastoviglie
EP2609845B1 (fr) 2011-12-30 2018-06-27 Whirlpool EMEA S.p.A Lave-vaisselle et méthode de détection d'anomalies de fonctionnement.
WO2018137988A1 (fr) * 2017-01-30 2018-08-02 Ebm-Papst Mulfingen Gmbh & Co. Kg Dispositif et procédé de détection d'un colmatage de filtre
US11358085B2 (en) 2017-01-30 2022-06-14 Ebm-Papst Mulfingen Gmbh & Co. Kg Device and method for detecting filter clogging
EP4119214A1 (fr) * 2017-01-30 2023-01-18 ebm-papst Mulfingen GmbH & Co. KG Dispositif de détection d'une obstruction d'un filtre
WO2022002557A1 (fr) * 2020-06-30 2022-01-06 BSH Hausgeräte GmbH Lave-vaisselle, procédé de fonctionnement d'un lave-vaisselle et produit de programme informatique

Also Published As

Publication number Publication date
EP1778068A1 (fr) 2007-05-02
EP1778068B1 (fr) 2009-08-19
DE602005016124D1 (de) 2009-10-01
TR200700213T1 (tr) 2007-04-24
ES2330029T3 (es) 2009-12-03
ATE439795T1 (de) 2009-09-15

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