EP0862891A2 - Appareil domestique avec dispositif de mesure pour déterminer le degré d'encrassement du liquide de nettoyage - Google Patents

Appareil domestique avec dispositif de mesure pour déterminer le degré d'encrassement du liquide de nettoyage Download PDF

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Publication number
EP0862891A2
EP0862891A2 EP98100428A EP98100428A EP0862891A2 EP 0862891 A2 EP0862891 A2 EP 0862891A2 EP 98100428 A EP98100428 A EP 98100428A EP 98100428 A EP98100428 A EP 98100428A EP 0862891 A2 EP0862891 A2 EP 0862891A2
Authority
EP
European Patent Office
Prior art keywords
rinsing liquid
degree
determining
dishwasher
liquid
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
EP98100428A
Other languages
German (de)
English (en)
Other versions
EP0862891B1 (fr
EP0862891A3 (fr
Inventor
Rainer Dr. Stamminger
Jürgen Vogel
Wolf-Dieter Krüger
Walter Sams
Michael Feser
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.)
AEG Hausgeraete GmbH
Original Assignee
AEG 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
Application filed by AEG Hausgeraete GmbH filed Critical AEG Hausgeraete GmbH
Publication of EP0862891A2 publication Critical patent/EP0862891A2/fr
Publication of EP0862891A3 publication Critical patent/EP0862891A3/fr
Application granted granted Critical
Publication of EP0862891B1 publication Critical patent/EP0862891B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity

Definitions

  • the invention relates to a dishwasher with a Device for determining the degree of pollution of a Flushing liquid according to the preamble of claim 1.
  • Such a dishwasher is from DE-OS 41 22nd 988 known.
  • the measuring device has one Luminous element for emitting light and two Luminous element arranged opposite light receiving elements to receive the emitted light, with between the rinsing liquid for the transmitter and the receivers is passed through.
  • the intensity of the from the light element emitted and by the light receiving elements absorbed light depends on the degree of pollution the rinsing liquid.
  • the measurement of the degree of contamination of the rinsing liquid takes place during so-called dynamic operation, d. H. with flowing rinsing liquid.
  • dynamic operation d. H. with flowing rinsing liquid.
  • disturbing factors occur during operation (e.g. air bubbles in the rinsing liquid), which is the measurement result falsify so that it leads to incorrect measurements.
  • the present invention is therefore based on the object the basis for a dishwasher in question to take measures with which the actual degree of contamination of the rinsing liquid without Extension of the washing program is measurable, whereby Incorrect measurements can be avoided.
  • the object is achieved in that at a dishwasher with a device for Determine the degree of contamination of a rinsing liquid the determination during the circulation of the rinsing liquid the degree of soiling at least partially immobile rinsing liquid can be carried out.
  • a dishwasher according to the invention has one Device for determining the degree of pollution of a Rinsing liquid to with the help of the determined value to be able to set the further program sequence.
  • Around disruptive influences with a flowing liquid exclude for the measurement is the Determination of the degree of contamination at least partially almost immobile rinsing liquid during the running Circulation operation feasible.
  • washing liquid If the washing liquid is almost immobile, they are in it particles of dirt in the balance and possibly are air bubbles carried during the flow largely escaped. Such conditions are for the Determination of the degree of contamination of the rinsing liquid Particularly suitable to rule out incorrect measurements.
  • the Prerequisite for an almost immobile rinsing liquid for the particularly good measurement conditions at otherwise running circulation operation is particularly due to this achievable that only part of the washing liquid is unmoved. This part of the rinsing liquid takes on Cleaning process not part at the time of measurement. Of the Most of the washing liquid circulates for the purpose the cleaning of the wash ware in a circulation circuit.
  • Dishwasher is one in the circulation circuit Reversing device includes the rinsing liquid alternately in at least two separate channels directs.
  • the rinsing liquid is carried in a channel while in the at least one other channel Partial amount of the rinsing liquid in an almost calm state remains.
  • the device for determining the Degree of contamination of the rinsing liquid one of these Assign channels.
  • the Degree of pollution can be measured at a time which is the channel to which the device for determining the Degree of pollution is assigned, not by the Reversing device is controlled.
  • the selection of the channel for the arrangement of the measuring device basically arbitrary, as a result of the alternating Control of the channels in each of the channels an almost immobile at different times Flush liquid can be found.
  • the degree of pollution in both Perform channels alternately, for example the light from a light source is fed into both channels becomes. The additional effort is essentially reduced to the second set of light receivers.
  • the invention is based on the drawing of a Embodiment explained in more detail.
  • the figure shows the longitudinal section of a household dishwasher.
  • a household dishwasher includes one Rinsing container 1 for arranging items to be washed and three Spray devices, a lower spray arm 3, an upper Spray arm 5 and a ceiling shower 7.
  • the spray devices 3, 5, 7 are from a circulation pump 9 with rinsing liquid fed.
  • the circulation pump 9 sucks out the rinsing liquid the sump 11 of the washing container 1, in which the returning rinsing liquid collects.
  • the circulation pump 9 is connected downstream of a reversing valve 13, which the the rinsing liquid supplied to the circulating pump 9 alternately a riser pipe 15 or a connecting hose 17 feeds.
  • the riser pipe 15 carries the rinsing liquid upper spray arm 5 too.
  • the connecting hose 17 branches itself in a connector 19 to the lower spray arm 3 and in a connecting hose 21, the mouth side with the Ceiling shower 7 is coupled.
  • the supply of fresh water takes place through a water supply hose 25 Flushing liquid is used at the end of the washing program a drain pump 27 removed from the device.
  • the dishwasher also has one Turbidity sensor 23 for determining the degree of contamination the rinsing liquid.
  • the turbidity sensor 23 is Connection hose 21 coupled such that the Degree of contamination of the rinsing liquid contained therein can be detected.
  • the measurement is not carried out during the activation phase of the connecting hose 17 through the reversing valve 13 but at a time too which the rinsing liquid is fed to the upper spray arm 5 becomes. In this way it is located at the measuring point in the Connection hose 21 an almost immovable rinsing liquid.
  • the turbidity sensor 23 Because of the principle of communicating tubes, it is required that the turbidity sensor 23 to a maximum be arranged at the same height with the lower spray arm 3 so that rinsing liquid is present at the measuring location. Preferably however, it is in the base area of the dishwasher arranged so that it is below the operating level the rinsing liquid.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP98100428A 1997-02-17 1998-01-13 Appareil domestique avec dispositif de mesure pour déterminer le degré d'encrassement du liquide de nettoyage Expired - Lifetime EP0862891B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19705927A DE19705927A1 (de) 1997-02-17 1997-02-17 Geschirrspülmaschine mit einer Einrichtung zum Ermitteln des Verschmutzungsgrades einer Spülflüssigkeit
DE19705927 1997-02-17

Publications (3)

Publication Number Publication Date
EP0862891A2 true EP0862891A2 (fr) 1998-09-09
EP0862891A3 EP0862891A3 (fr) 1999-02-17
EP0862891B1 EP0862891B1 (fr) 2003-12-17

Family

ID=7820418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100428A Expired - Lifetime EP0862891B1 (fr) 1997-02-17 1998-01-13 Appareil domestique avec dispositif de mesure pour déterminer le degré d'encrassement du liquide de nettoyage

Country Status (2)

Country Link
EP (1) EP0862891B1 (fr)
DE (2) DE19705927A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1297780A2 (fr) * 2001-09-21 2003-04-02 Miele & Cie. GmbH & Co. Dispositif avec détecteur de turbidité pour un lave-vaisselle ou une machine à laver
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
US10349805B2 (en) 2011-05-11 2019-07-16 Whirlpool Corporation Dishwasher with rack corner spray system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19949801A1 (de) * 1999-10-15 2001-04-19 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zur Bestimmung der Art und Konzentration von Beimischungsanteilen in einer Flüssigkeit
DE10059112C1 (de) * 2000-11-28 2002-05-08 Miele & Cie Geschirrspülmaschine mit einer Einrichtung zur Verhinderung einer Schaum- oder Luftblasenansammlung in der Messzone eines Trübungssensors
US8778094B2 (en) 2011-05-11 2014-07-15 Whirlpool Corporation Dishwasher with multi-feed washing system
US9034114B2 (en) 2012-09-14 2015-05-19 Whirlpool Corporation Dishwasher with booster agent dispersal system
DE102015204540A1 (de) * 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit einem elektrochemischen Sensor sowie hierzu geeignete Waschmaschine
DE102017123048A1 (de) 2016-10-19 2018-04-19 Miele & Cie. Kg Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122988A1 (de) * 1990-07-12 1992-01-16 Alps Electric Co Ltd Automatische wasch- bzw. reinigungsvorrichtung
EP0569733A1 (fr) * 1992-05-12 1993-11-18 AEG Hausgeräte GmbH Machine à laver la vaisselle
JPH06129986A (ja) * 1992-10-19 1994-05-13 Toshiba Corp 食器洗浄機用汚れ検知装置
DE4243869A1 (de) * 1992-12-23 1994-07-07 Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122988A1 (de) * 1990-07-12 1992-01-16 Alps Electric Co Ltd Automatische wasch- bzw. reinigungsvorrichtung
EP0569733A1 (fr) * 1992-05-12 1993-11-18 AEG Hausgeräte GmbH Machine à laver la vaisselle
JPH06129986A (ja) * 1992-10-19 1994-05-13 Toshiba Corp 食器洗浄機用汚れ検知装置
DE4243869A1 (de) * 1992-12-23 1994-07-07 Bosch Siemens Hausgeraete Haushalt-Geschirrspülmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 420 (P-1782), 5. August 1994 -& JP 06 129986 A (TOSHIBA CORP), 13. Mai 1994 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1297780A2 (fr) * 2001-09-21 2003-04-02 Miele & Cie. GmbH & Co. Dispositif avec détecteur de turbidité pour un lave-vaisselle ou une machine à laver
EP1297780A3 (fr) * 2001-09-21 2006-04-12 Miele & Cie. KG Dispositif avec détecteur de turbidité pour un lave-vaisselle ou une machine à laver
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
EP1543764A3 (fr) * 2003-12-19 2006-05-24 Electrolux Home Products Corporation N.V. Lave-vaisselle avec distributeur de fluide et procédé pour la commutation du distributeur
US10349805B2 (en) 2011-05-11 2019-07-16 Whirlpool Corporation Dishwasher with rack corner spray system

Also Published As

Publication number Publication date
EP0862891B1 (fr) 2003-12-17
EP0862891A3 (fr) 1999-02-17
DE59810428D1 (de) 2004-01-29
DE19705927A1 (de) 1998-08-20

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