EP2058523A2 - Procédé destiné à l'exécution d'un programme de rinçage - Google Patents

Procédé destiné à l'exécution d'un programme de rinçage Download PDF

Info

Publication number
EP2058523A2
EP2058523A2 EP20080019144 EP08019144A EP2058523A2 EP 2058523 A2 EP2058523 A2 EP 2058523A2 EP 20080019144 EP20080019144 EP 20080019144 EP 08019144 A EP08019144 A EP 08019144A EP 2058523 A2 EP2058523 A2 EP 2058523A2
Authority
EP
European Patent Office
Prior art keywords
speed
circulation pump
circulating pump
program
lowered
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.)
Withdrawn
Application number
EP20080019144
Other languages
German (de)
English (en)
Inventor
Walter Assmann
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2058523A2 publication Critical patent/EP2058523A2/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

  • the present invention relates to a method for carrying out a rinsing program in which rinsing liquid circulates in a circuit by means of a circulating pump, wherein the circulating pump has at least one hydrodynamic sliding bearing.
  • washing programs are used in particular dishwashers.
  • a sliding bearing 1 comprises a generally horizontally arranged bearing sleeve 2, in which a rotatable shaft 3 is arranged.
  • Figure 1A is the shaft 3 in an operating condition in which a certain distance to the sleeve 2 is present on all sides and therefore only fluid friction occurs.
  • the central axis M1 of the sleeve 2 and the center axis M2 of the shaft 3 are arranged vertically and horizontally offset from one another.
  • the shaft 3 runs on the bottom of the sleeve 2, as in FIG. 1B is shown.
  • the central axis M2 of the shaft 3 is located below the central axis M1 of the sleeve 2. If the shaft 3 is now moved, a friction occurs between the shaft 3 and the sleeve 2.
  • FIG. 2 the various states of friction in relation to the speed of the shaft 3 are shown. From the resting state occurs during a rotation of the shaft 3 almost exclusively a friction as in dry-run-like conditions, resulting in considerable wear. The stronger the shaft 3 is rotated, the greater the influence of the liquid, which is arranged within the sleeve 2.
  • a mixed friction occurs before at a transition speed n ü only a fluid friction occurs and no more dry friction. Therefore, the friction in the range of the transition speed n ü is very low.
  • a rotational speed n 1 is used as the rotational speed for a hydrodynamic slide bearing, which is higher than the transition rotational speed n ü , in order not to come within the range of mixed friction and thus a low wear is ensured.
  • FIG. 3 the sequence of a washing program of a dishwashing machine according to the prior art is shown.
  • the circulation pump rotates at a speed n 1 and thus promotes a volume flow V 1 , so that circulating rinsing fluid can clean the dishes.
  • the circulation pump is switched off and the rinsing liquid is changed.
  • the circulation pump with the hydrodynamic sliding bearing started again and a second program section runs off. This can be repeated several times until the washing program is completed. Due to the frequent start-up of the circulation pump, a certain bearing wear occurs in the range of rotation up to the transitional speed, which decisively influences the service life of the bearing. If the bearing of the circulation pump is defective, considerable repairs must be carried out.
  • a circulating pump is initially run up to an operating speed in the method and, after a program section has elapsed, the speed of the circulating pump is lowered to a speed at which fluid friction is still present at the hydrodynamic sliding bearing. At reduced speed then a water change is performed before the circulation pump is raised again to an operating speed. These steps may be repeated as often as necessary during a wash program before the circulation pump is finally shut down.
  • the circulation pump is either maintained at an operating speed to deliver a certain amount of flushing fluid or a lowered speed with fluid friction.
  • the speed of the circulating pump is kept at a speed just above the transition speed when lowering to a speed, so that one is still relatively safe in the field of fluid friction.
  • the speed of the circulating pump in the lowered state between 2% to 10% above the transition speed.
  • the speed of the circulation pump is preferably lowered at least three times.
  • FIG. 4 a method for performing a washing program is shown schematically, wherein the individual program sections are shown over time.
  • both the rotational speed of a circulating pump for circulating rinsing liquid and the conveyed amount of rinsing liquid are shown, wherein the flow rate and speed of course behave proportional to each other.
  • a circulating pump with at least one hydrodynamic plain bearing is raised to an operating speed n 1 , whereby a volume flow V 1 of a rinsing liquid is conveyed.
  • the circulation pump moves only a lowered speed n A , which is above a transition speed, that is in the range of pure fluid friction for the hydrodynamic sliding bearing.
  • the delivered volume flow V A at reduced speed can go to zero, which means that the remaining rinse liquid is only stirred, but no circulation takes place in a dishwasher more. It is of course possible to promote even a low flow at reduced speed.
  • the rinsing liquid is changed.
  • the circulation pump is brought to an operating speed n 2 , whereby the volume flow V 2 is conveyed.
  • the speed of the circulating pump is lowered again to a lowered level Speed n A driven, the startup and lowering of the circulating pump depending on the washing program can be made so often until finally the circulation pump should be turned off.
  • the circulation pump is always driven above the transition speed after the start of the wash program, so that the wear on the hydrodynamic sliding bearing is extremely low.
  • the circulation pump is not switched off, but operated only at the lowered speed, which keeps the bearing wear very low.
  • the transition speed n ü can be influenced depending on the choice of the coefficients of friction of the sleeve 2 and the shaft 3 and the bearing geometry.
  • the transition speed n u is preferably in a range of 300 to 500 min -1 , so that the lowered speed may be, for example, in a range of 700 to 1000 min -1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Sliding-Contact Bearings (AREA)
EP20080019144 2007-10-31 2008-10-31 Procédé destiné à l'exécution d'un programme de rinçage Withdrawn EP2058523A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710052333 DE102007052333B4 (de) 2007-10-31 2007-10-31 Verfahren zur Durchführung eines Spülprogramms

Publications (1)

Publication Number Publication Date
EP2058523A2 true EP2058523A2 (fr) 2009-05-13

Family

ID=40473949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080019144 Withdrawn EP2058523A2 (fr) 2007-10-31 2008-10-31 Procédé destiné à l'exécution d'un programme de rinçage

Country Status (2)

Country Link
EP (1) EP2058523A2 (fr)
DE (1) DE102007052333B4 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010079021A3 (fr) * 2008-12-19 2010-10-14 BSH Bosch und Siemens Hausgeräte GmbH Procédé de vidange d'un liquide d'un appareil électroménager à circulation d'eau
WO2011126524A1 (fr) * 2010-03-30 2011-10-13 Nidec Motor Corporation Pompes de lave-vaisselle à orifice d'admission décalé
US8968483B2 (en) 2012-09-10 2015-03-03 Whirlpool Corporation Method of using liquid in a dishwasher
US9186034B2 (en) 2012-09-05 2015-11-17 Whirlpool Corporation Methods of reusing liquid in a dishwasher
US10595702B2 (en) 2016-09-19 2020-03-24 Haier Us Appliance Solutions, Inc. Single drive axis motor for a dishwasher appliance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014000765A1 (de) * 2014-01-24 2015-07-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotorische Wasserpumpe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358970A1 (de) * 2003-12-16 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit Zwischenpumpbetrieb
DE102004059722A1 (de) * 2004-12-11 2006-06-14 Electrolux Home Products Corporation N.V. Verfahren zum Betrieb einer Geschirrspülmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010079021A3 (fr) * 2008-12-19 2010-10-14 BSH Bosch und Siemens Hausgeräte GmbH Procédé de vidange d'un liquide d'un appareil électroménager à circulation d'eau
US9609996B2 (en) 2008-12-19 2017-04-04 BSH Hausgeräte GmbH Method for pumping a fluid out of an aquiferous household device
WO2011126524A1 (fr) * 2010-03-30 2011-10-13 Nidec Motor Corporation Pompes de lave-vaisselle à orifice d'admission décalé
US9186034B2 (en) 2012-09-05 2015-11-17 Whirlpool Corporation Methods of reusing liquid in a dishwasher
US8968483B2 (en) 2012-09-10 2015-03-03 Whirlpool Corporation Method of using liquid in a dishwasher
US10595702B2 (en) 2016-09-19 2020-03-24 Haier Us Appliance Solutions, Inc. Single drive axis motor for a dishwasher appliance

Also Published As

Publication number Publication date
DE102007052333A1 (de) 2009-05-07
DE102007052333B4 (de) 2009-07-30

Similar Documents

Publication Publication Date Title
EP2058523A2 (fr) Procédé destiné à l'exécution d'un programme de rinçage
EP2930262B1 (fr) Commande d'amenée d'eau
EP2246469B1 (fr) Procédé de functionnement d'un lave-linge et lave-linge doté d'une pompe à circulation et d'une phase d'essorage
DE1225569B (de) Verfahren und Vorrichtung zum Wasserenthaerten fuer Wasch- und Geschirrspuelmaschinen
DE102014206119B4 (de) Verfahren zum Betreiben einer Pumpe in einem Haushaltsgerät und wasserführendes Haushaltsgerät
DE102019121736B4 (de) Geschirrspülmaschine und Verfahren zum Betrieb einer Geschirrspülmaschine
EP2205140B1 (fr) Appareil ménager à circulation d'eau doté d'un filtre autonettoyant
EP2381827B1 (fr) Procédé de vidange d'un liquide d'un appareil électroménager à circulation d'eau
DE102009002782B4 (de) Verfahren zum Spülen in einer Waschmaschine mit einem Spülschritt bei hoher Trommeldrehzahl
EP2511413A1 (fr) Appareil ménager doté d'un réservoir d'eau et d'un guidage du condensat
CH704603B1 (de) Waschmaschine mit Wassermischung in der Waschmittelzuführung.
DE102019117652A1 (de) Waschmaschine mit Hydrozyklon und Verfahren zu deren Betrieb
EP1669017B2 (fr) Procédé d'exploitation d'un lave-vaisselle
DE602004013115T2 (de) Verfahren zum Ansteuern eines Zweirichtungsmotors zum Antrieb von Umwälzpumpen
DE102023201351B3 (de) Mischvorrichtung zum Durchmischen eines Zusatzstoffes mit einer Flüssigkeit in einer Waschmaschine, Waschmaschine und Verfahren
DE102011051356A1 (de) Verfahren zur Durchführung eines Wassereinlaufs in den Spülbehälter eines Geschirrspülautomaten
EP3411520A1 (fr) Appareil d'entretien du linge muni d'une commande de pompe
EP2898811A1 (fr) Pompe d'évacuation d'un liquide et appareil domestique avec une telle pompe
EP3757273B1 (fr) Dispositif de traitement du linge comprenant une pompe et le procédé pour son fonctionnement
DE202013105323U1 (de) Fahrzeugwaschanlage
EP1699341B1 (fr) Lave-vaisselle avec fonctionnement simultané de la pompe de circulation et de la pompe à lessive
EP2888986A1 (fr) Pompe d'évacuation d'un liquide et appareil domestique avec une telle pompe
CH703489B1 (de) Haushaltsgerät mit Warmwasseranschluss.
EP2762631B1 (fr) Procédé de fonctionnement d'un lave-linge avec un dispositif de recirculation
DE1965828B2 (de) Automatische Geschirrspülmaschine mit Fliehkraftabscheider

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160503