EP1277431A1 - Appareil domestique avec un dispositif de distributeur de liquide réglable et son procédé de commande - Google Patents

Appareil domestique avec un dispositif de distributeur de liquide réglable et son procédé de commande Download PDF

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Publication number
EP1277431A1
EP1277431A1 EP02010281A EP02010281A EP1277431A1 EP 1277431 A1 EP1277431 A1 EP 1277431A1 EP 02010281 A EP02010281 A EP 02010281A EP 02010281 A EP02010281 A EP 02010281A EP 1277431 A1 EP1277431 A1 EP 1277431A1
Authority
EP
European Patent Office
Prior art keywords
liquid
household appliance
distribution device
liquid distribution
appliance according
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
EP02010281A
Other languages
German (de)
English (en)
Other versions
EP1277431B1 (fr
Inventor
Winfried Steiner
Karlheinz Kohles
Stefan Füglein
Klaus-Martin Forst
Jürgen Vogel
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP08020671A priority Critical patent/EP2052665A1/fr
Publication of EP1277431A1 publication Critical patent/EP1277431A1/fr
Application granted granted Critical
Publication of EP1277431B1 publication Critical patent/EP1277431B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A47L15/0049—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
    • 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
    • A47L2401/09—Water level
    • 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

  • the invention relates to a household appliance, in particular a Dishwasher, with an adjustable liquid distribution device for adjusting the liquid distribution within the home appliance, as well as a control method the liquid distribution device.
  • EP 0 237 994 B1 and WO 01/03568 A1 each have one Dishwasher with a switchable distributor valve known. From the dishwasher sump of the dishwasher is sucked in by a circulating pump and rinsing liquid the distributor valve is fed to an upper and lower spray arm. A movable ball is arranged in the distributor valve, which by varying the operation of the circulation pump over time first line to the upper spray arm, a second line to lower spray arm or in an intermediate position both lines releases to both spray arms. If the circulation pump is out of operation, the switching element falls into a defined basic state inside the distribution valve. The switching of the distributor valve enables the selection of the one to be operated Spray arm so that. e.g. if there is little wash load, only one spray arm underneath Water saving is operated or the wash ware from only one Spray arm with a large amount of rinsing liquid is applied.
  • the object of the invention is to provide a household appliance and to provide for this a procedure in which the safe achievement a switching position of a liquid distribution device is verifiable.
  • the liquid is distributed within the household appliance.
  • the liquid distribution device can work linearly, i.e. the liquid distribution vary continuously or switch the liquid distribution gradually.
  • the liquid distribution device at least one control element with which the distribution of the Liquid is set within the facility. there it can happen that the control element is not controlled correctly or the desired position has not been reached. Thereby can after a switchover at the liquid distribution device the actual distribution of the liquid deviate from the desired liquid distribution. To capture such a deviation becomes a detection device provided with the actual state of the liquid is detected within the household appliance.
  • the liquid distribution device can be hydraulic, for example be switched by the liquid flow, such as. by means of the ball valve known from EP 0 237 994 B1. Or the liquid distribution device is through an adjusting element coupled to a motor drive adjusted, e.g. with a rotary valve, a valve disc or similar.
  • the motor drive is for example a magnetic switch, an electric motor, a pneumatic one or hydraulic device.
  • the liquid level can be advantageously with an analog Pressure sensor, with a float switch, a pressure switch, an ultrasonic level meter or the like.
  • the measurement can be done discretely by using different level positions be detected, or continuously, so that a possible exact level determination can take place.
  • With a pressure sensor the liquid column above the pressure sensor determine.
  • the liquid level sensor arranged on the suction side of a circulation pump. Since there is always liquid at this point, can measure liquid levels regardless of the selected distribution be performed. In addition, too Start of a rinse cycle, a wash cycle or the like Measurement of the amount of liquid filled in the household appliance be performed. This means that only one component is required the amount of liquid in the household appliance and the actual position of the liquid distribution device to capture. This is advantageously done in the bottom area of a container of the household appliance. For example in the dishwasher sump in the dishwashing container of a dishwasher, because the Flushing liquid moved comparatively slowly and an average the liquid level is particularly easy to measure.
  • the Condition of the liquid with a liquid flow meter detected.
  • the liquid measurement can be done directly by a Lever, which is deflected by the fluid pressure, by a measuring wheel or indirectly through a pressure sensor on the Liquid back pressure reacts to be measured.
  • a Lever which is deflected by the fluid pressure
  • a measuring wheel or indirectly through a pressure sensor on the Liquid back pressure reacts to be measured.
  • the flow rate of the liquid depends on the individual line sections, which switching state the liquid distribution device occupies.
  • At least one flow sensor is advantageous here Inlet and / or at least one outlet of the liquid distribution device arranged.
  • the signal detected by the detector about the state the liquid is advantageous via a signal line sent to a control device.
  • the control device is the program sequence control of the household appliance.
  • the washing program control one Dishwasher.
  • the control device is in turn connected to a control line the liquid distribution device and / or a circulation pump connected. Depending on whether the liquid distribution device is converted by a motor drive or e.g. due to the timing of the circulation pump, corresponding Control signals provided by the control device.
  • the function is a adjustable liquid distribution device of a household appliance based on the state of the liquid after adjusting the liquid distribution device actually ingested is recorded.
  • the current state of the liquid is also advantageous compared to a predetermined target value.
  • a predetermined target value e.g. a predetermined target value
  • Setpoints e.g. a predetermined one Setpoints.
  • each switching state is compared using its own setpoint, so that a clear assignment can take place.
  • the liquid distribution device via an intermediate position again switched to the selected position if based on a deviation the current state of the liquid from the setpoint it was detected that the desired position was not reached.
  • an adjustment device of the liquid distribution device jammed for a short time or due to contamination not tightly closing in the liquid at an outlet opening, so this state is preferred by interposing of the idle state, and again controlling the desired Position brought about.
  • the number of repetitions is preferably limited, whereby if the number is exceeded and further malfunction of the Liquid distribution device issued an error message becomes. This will make the user of the household appliance above it informs that maintenance must be carried out. in this connection can be provided that the household appliance despite the malfunction continues to operate.
  • the Setpoint for a given position of the liquid distribution device not fixed unchangeably, but will adjusted based on other operating parameters of the household appliance.
  • the specified setpoint is corresponding to the Adjusted the amount of rinsing liquid.
  • Standardization of the target value or values in one is advantageous specified operating state of the dishwasher carried out.
  • By normalizing the specified setpoint For example, there may be a deviation in the total amount of liquid filled be balanced. This is e.g. a correction in a dishwasher if increased Wash liquid sticks to the wash ware. Can continue with it operational wear and tear, e.g. the circulation pump can be taken into account with little effort.
  • Fig. 1 is a schematic representation of a rinsing liquid circuit in a dishwasher
  • Fig. 2 different rinsing liquid levels in the dishwasher sump at different positions of a ball switch.
  • Fig. 1 shows a schematic representation of the rinsing liquid circuit in a dishwasher.
  • a flushing room 1 of the dishwasher is an upper spray arm 2, a lower spray arm 3 and an upper and lower crockery basket 4 arranged .
  • the spray arms 2, 3 in the crockery baskets 4 stored items to be washed with washing liquid, the then in the wash cabinet 1 or the wash tank in the dishwasher sump 5 collects.
  • the rinsing liquid is supplied by a circulating pump 6 sucked out of the dishwasher sump 5 and through a connecting line 7 promoted to a changeover valve 8 or ball switch.
  • the rinsing liquid from the circulation pump 6 optionally through a first line 9 to the upper Spray arm 2, through a second line 10 to the lower spray arm 3, or both to the lower and upper spray arm 2, 3 passed.
  • a bypass line 11 leads from the valve body to the suction side the circulation pump 6.
  • a flow guide body is located within the valve body of the changeover valve 8 18 arranged by the circulation pump 6 incoming liquid flow streamlined to the first and / or second line 9, 10 deflects. Furthermore is inside of the valve body a ball 14 movably mounted, which in Fig. 1 marked I, II and III switch positions can take. In switch position I the bypass line 11, in switch position II, the first line 9 and in the Position III closed the second line 10. In the position I is the ball 14 by the pressure difference between the flowing into the switching valve 8 rinsing liquid and inlet-side suction held in front of the circulation pump 6. additionally flows around the ball through the flow guide 18 14 prevented in position I.
  • the liquid level of the washing liquid in the dishwasher sump 5 depends on whether the circulation pump 6 is in operation and which position the ball 14 occupies. As soon as the fresh water supply was turned off and the circulation pump 6 out of operation is, the rinsing liquid runs from lines 9 and 10 and the spray arms 2, 3 back or out and collects in the Dishwasher sump 5. At this point, there is a maximum Rinse liquid level in the dishwasher sump 5, such as it is marked with the level A in FIG. 2.
  • a pressure sensor 21 or ultrasound level meter arranged the the middle level of the rinsing liquid detected in the dishwasher sump 5 .
  • the corresponding signal is from the pressure sensor 21 via a signal line 22 to a control unit 20 transferred to the dishwasher.
  • the control unit 20 compares the signal from the pressure sensor 21 with one Setpoint and causes the circulation pump 6 in the event of a deviation of the actual value from the setpoint for a new activation of the desired Position of the ball 14 in the changeover valve 8. For this becomes a control signal from the control unit 20 via the control line 25 sent to the drive unit 24 of the circulation pump 6.
  • the setpoint is advantageously used a standardization is established. This will be for the washing program required fresh water is introduced and circulated for a short time. After switching off the circulation pump 6 'and a short waiting time the setpoint for basic level A is then set, in which a certain amount of washing liquid adheres to the wash ware or was collected in it. Regarding this standardized Basic level A now becomes levels B, C and D as relative setpoints set. Through this standardization e.g. Fluctuations in fresh water supply or differences the washing liquid adhering to the items to be washed is compensated.
  • the setpoints which with the actual values in the different positions are compared, also depend on the selected speed of the circulation pump 6, because the amount of liquid in the lines 9, 10 and Spray arms 2, 3 and the one currently distributed in the wash cabinet 1 Flushing liquid from the liquid pressure and from the pump speed depend.
  • flow sensors 30, 32 or pressure sensors are provided.
  • the Flow meters 30, 32 have a driver 31, which in the Line 9 or 10 protrudes and through the liquid flow is operated. This is based on the flow of the liquid of the driver 31 detected and it can be determined whether and through which of the lines 9, 10 rinsing liquid flows.
  • the basic position i.e. when the circulation pump is switched off 6 none of the flow sensors 30, 32 responds. Is the ball 14 in position II, only the flow sensor 32 detects Signal that is sent to the control unit 20 via a signal line 33 is directed.
  • position III only the flow sensor detects 30 a signal that is sent via a signal line 34 the control unit 20 is directed. Detect in position I. both the first and the second flow sensors 30, 32 Signal.
  • control unit In the control unit is obtained by comparing the Signals from the flow sensors 30, 32 and at the desired one Position expected signals a malposition of the Switch valve 8 detected.
  • a malposition or deviation e.g. a changeover of the changeover valve 8 made by means of the circulation pump 6, as in the above determined deviation based on the measured with the pressure sensor 21 Liquid level is described.
  • a pressure sensor is used instead of the flow sensors 30, 31, so can be due to the resulting in the lines 9, 10 Dynamic pressure, a pressure change can be detected, and so likewise, whether the lines 9, 10 flow with flushing liquid become. A malposition of the changeover valve 8 can then accordingly as described for the flow sensors 30, 32, be recorded.
EP20020010281 2001-07-18 2002-05-21 Appareil domestique avec un dispositif de distributeur de liquide réglable et son procédé de commande Expired - Fee Related EP1277431B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08020671A EP2052665A1 (fr) 2001-07-18 2002-05-21 Appareil ménager doté d'un dispositif de distribution de liquide réglable et son procédé de contrôle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134916 2001-07-18
DE2001134916 DE10134916A1 (de) 2001-07-18 2001-07-18 Haushaltsgerät mit einer einstellbaren Flüssigkeitsverteilungseinrichtung und Verfahren zu deren Kontrolle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08020671A Division EP2052665A1 (fr) 2001-07-18 2002-05-21 Appareil ménager doté d'un dispositif de distribution de liquide réglable et son procédé de contrôle

Publications (2)

Publication Number Publication Date
EP1277431A1 true EP1277431A1 (fr) 2003-01-22
EP1277431B1 EP1277431B1 (fr) 2008-12-03

Family

ID=7692198

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20020010281 Expired - Fee Related EP1277431B1 (fr) 2001-07-18 2002-05-21 Appareil domestique avec un dispositif de distributeur de liquide réglable et son procédé de commande
EP08020671A Withdrawn EP2052665A1 (fr) 2001-07-18 2002-05-21 Appareil ménager doté d'un dispositif de distribution de liquide réglable et son procédé de contrôle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08020671A Withdrawn EP2052665A1 (fr) 2001-07-18 2002-05-21 Appareil ménager doté d'un dispositif de distribution de liquide réglable et son procédé de contrôle

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EP (2) EP1277431B1 (fr)
DE (3) DE20122927U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20090684A1 (it) * 2009-09-07 2011-03-08 Bitron Spa Procedimento per il controllo del funzionamento di una macchina lavastoviglie.
EP2156778A3 (fr) * 2008-08-21 2011-05-18 LG Electronics Inc. Lave-vaisselle et son procédé de contrôle
WO2012059349A1 (fr) * 2010-11-03 2012-05-10 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour faire fonctionner un appareil ménager à circulation d'eau

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050102457A (ko) * 2004-04-22 2005-10-26 엘지전자 주식회사 식기 세척기의 과급수 방지구조 및 방법
DE102011000287B4 (de) * 2011-01-24 2014-09-11 Miele & Cie. Kg Verfahren zur Einstellung eines von einer Umwälzpumpe in einem wasserführenden Haushaltgerät geförderten Volumenstroms
DE102013226637A1 (de) 2013-12-19 2015-06-25 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung und Verfahren zur Reinigung von Reinigungsgut
DE102018209076A1 (de) * 2018-06-07 2019-12-12 BSH Hausgeräte GmbH Geschirrspülmaschine, Verfahren zum Betreiben einer Geschirrspülmaschine und Computerprogrammprodukt

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237994A2 (fr) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide
EP0534213A1 (fr) * 1991-09-26 1993-03-31 ZANUSSI GRANDI IMPIANTI S.p.A. Dispositif de contrôle des cycles de lavage et rinçage pour machines à laver la vaisselle
DE19828768A1 (de) * 1998-06-27 2000-01-05 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einer Umwälzpumpe und Verfahren zum Betreiben derselben
FR2789451A1 (fr) * 1999-02-08 2000-08-11 Siebe Appliance Controls Sa Dispositif de commande de l'orientation d'un fluide
WO2001003568A1 (fr) * 1999-07-13 2001-01-18 Electrolux Zanussi S.P.A. Lave-vaisselle ameliore avec vanne de distribution de liqueur
EP1088509A1 (fr) * 1999-10-01 2001-04-04 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle domestique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237994A2 (fr) * 1986-03-19 1987-09-23 INDUSTRIE ZANUSSI S.p.A. Lave-vaisselle avec une soupape de distribution dans le cycle du liquide
EP0534213A1 (fr) * 1991-09-26 1993-03-31 ZANUSSI GRANDI IMPIANTI S.p.A. Dispositif de contrôle des cycles de lavage et rinçage pour machines à laver la vaisselle
DE19828768A1 (de) * 1998-06-27 2000-01-05 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit einer Umwälzpumpe und Verfahren zum Betreiben derselben
FR2789451A1 (fr) * 1999-02-08 2000-08-11 Siebe Appliance Controls Sa Dispositif de commande de l'orientation d'un fluide
WO2001003568A1 (fr) * 1999-07-13 2001-01-18 Electrolux Zanussi S.P.A. Lave-vaisselle ameliore avec vanne de distribution de liqueur
EP1088509A1 (fr) * 1999-10-01 2001-04-04 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle domestique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2156778A3 (fr) * 2008-08-21 2011-05-18 LG Electronics Inc. Lave-vaisselle et son procédé de contrôle
CN101655698B (zh) * 2008-08-21 2013-01-16 Lg电子株式会社 洗碗机及其控制方法
EP2156778B1 (fr) 2008-08-21 2016-09-21 LG Electronics Inc. Lave-vaisselle et son procédé de contrôle
ITTO20090684A1 (it) * 2009-09-07 2011-03-08 Bitron Spa Procedimento per il controllo del funzionamento di una macchina lavastoviglie.
EP2292139A1 (fr) * 2009-09-07 2011-03-09 BITRON S.p.A. Procédé de contrôle d'une machine lave-vaisselle
WO2012059349A1 (fr) * 2010-11-03 2012-05-10 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour faire fonctionner un appareil ménager à circulation d'eau
US20130220374A1 (en) * 2010-11-03 2013-08-29 BSH Bosch und Siemens Hausgeräte GmbH Method for operating a water-conducting domestic appliance
US10004375B2 (en) 2010-11-03 2018-06-26 BSH Hausgeräte GmbH Method for operating a water-conducting domestic appliance

Also Published As

Publication number Publication date
DE10134916A1 (de) 2003-04-24
DE50213070D1 (de) 2009-01-15
DE20122927U1 (de) 2010-04-08
EP2052665A1 (fr) 2009-04-29
EP1277431B1 (fr) 2008-12-03

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