EP2746451A1 - Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau - Google Patents

Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau Download PDF

Info

Publication number
EP2746451A1
EP2746451A1 EP12401254.3A EP12401254A EP2746451A1 EP 2746451 A1 EP2746451 A1 EP 2746451A1 EP 12401254 A EP12401254 A EP 12401254A EP 2746451 A1 EP2746451 A1 EP 2746451A1
Authority
EP
European Patent Office
Prior art keywords
drain pump
pump
drain
shutdown
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.)
Withdrawn
Application number
EP12401254.3A
Other languages
German (de)
English (en)
Inventor
Martin Diers
Michael Hormann
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
Priority to EP12401254.3A priority Critical patent/EP2746451A1/fr
Publication of EP2746451A1 publication Critical patent/EP2746451A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • A47L15/4225—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
    • 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
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0031—Water discharge phases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of 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
    • 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 method for pumping a liquid from a water-conducting household appliance, in particular from a washing machine, wherein the liquid is conveyed from a tub through a drain line by means of an electric lye pump at a Radiospump oder the drain pump and the power of the drain pump is then shut down in a shutdown ,
  • Such a method turns out, for example DE 10 2011 050 922 B3 known washing machine.
  • the drain pump is used to pump out between washing cycles of a wash program, and at the end of a wash program, the existing in the tub spent washing liquid from the washing machine through a drain opening to the outside. After the liquid has been completely pumped out of the tub, the drain pump is turned off.
  • the drain opening which is usually followed by a sewage hose outside the washing machine housing, is arranged above the drain pump, so that the liquid to be pumped off has to overcome a height difference in the drain line.
  • this height difference also serves as a return flow by liquid is kept in the liquid column to flow after switching off the drain pump back into the drain pump and to close there existing drain valve between the drain pump and tub.
  • a backflow preventer may also be provided in addition to the drain line in order to increase the volume of the returning liquid beyond the capacity of the drain line.
  • the invention has for its object to make the pumping out of the liquid from the water-bearing household appliance reliable and hygienic.
  • the invention is based on the consideration, during the shutdown, the drain pump not abruptly or jerkily, but gradually shut down. This means that by activating the drain pump, the energy supply to the drain pump does not switch off immediately or shuts down to a minimum, but shuts down gradually or with intermediate steps. This does not mean an unavoidable delay of the switch-off process due to the control or pump motor electronics or the pump motor mechanism (for example due to the inertia of a rotor), which would inevitably occur in all lye pumps. Rather, it is about a scheduled, controlled or defined, gradual shutdown of the pumping capacity of the drain pump. This should preferably be controlled in such a way that a reduction rate of the shut down pumping power is limited. In other words, the pump power preferably proceeds substantially steadily from the operating pump power to zero.
  • the liquid column located in the discharge line does not exceed a maximum return flow rate of 0.5 meters per second (m / s) during its downward movement.
  • a drain pump control device is accordingly provided which ensures the gradual shutdown of the drainage pump's power during the shutdown process.
  • the water-conducting household appliance is in particular a washing machine or a dishwasher.
  • this solution also works for a washing machine or a dishwasher, which have an additional circulation pump.
  • the water-bearing domestic appliance can be considered as a system of vessels or tubes communicating with each other, to which the drain line, the tub, if not separated by an outlet valve, the drain pump and possibly a vent line belong. Therefore, reducing the maximum velocity of the downflowing liquid column in the drain line also reduces the height up to which the liquid and contaminants carried therein are carried up the other ports of the pump, ie in the tub, if not separated by an outlet valve. or in the vent line.
  • the power of the drain pump is gradually shut down such that a liquid column located in the drain line has a maximum speed of 0.4 m / s, 0.3 m / s, 0.25 m / s or 0.2 m / s. This prevents that the liquid located in the drain line penetrates so far into the tub, into a vent line extending from the drain pump to the dispenser or even into the dispenser that contaminants can deposit there at heights that remain permanently below the water level. This could otherwise lead to a drying of the dirt on the inner surfaces of these areas in the household appliance.
  • the fact that the liquid column in the discharge line does not exceed a certain maximum speed or a maximum return flow rate means that the liquid in the discharge line moves downwards at a rate through the discharge line, ie in the direction of the drain pump, which in each case lies below this maximum speed ,
  • the speed of the liquid column can be measured in particular on a liquid surface or a liquid level at the upper end of the liquid column. Such a liquid surface forms in the return flow of the liquid in the direction of the drain pump when the liquid flow at the outlet of the drain line tears off.
  • the liquid column expands around the liquid stored in the return flow safety device.
  • the return safety device serves to ensure a residual filling quantity in the drain pump even when the liquid is completely pumped out, so that a drain valve present between the drain pump and the tub remains securely closed.
  • the drain line itself can be dimensioned as a return flow protection.
  • the speed of the liquid column is the speed of the liquid at about half the height of the discharge line, that is, around the Speed at which the upper liquid level passes through a central area of the drain line.
  • it may also be the velocity of the liquid as measured from the upper liquid level at the lower end of the drain line.
  • the shutdown of the power of the drain pump is at least partially in stages and / or gradually.
  • the capacity of the leach pump is first reduced to a certain first intermediate value in one or more stages before it is then gradually reduced from the first intermediate value to a second intermediate value or to zero.
  • the first intermediate value corresponds to a liquor pump power which is sufficient to build up a sufficiently high pressure so that the liquid column in the drain line does not yet move back.
  • the liquid column would slowly move back in the drain line.
  • the gradual reduction of pumping power may occur after the gradual reduction, or the shutdown may be performed substantially entirely in single stages.
  • the gradual reduction of the caustic pump power can be performed ramped.
  • the shutdown of the power of the drain pump can be at least partially ramped during shutdown.
  • the time course of the lye pump power is ramped.
  • the slope of the ramp determines the speed at which the drain pump is throttled, and thus indirectly the speed of the falling liquid column in the drain line.
  • the ramp may be composed of several partial ramps with different slopes, for example, to make the shutdown process more efficient.
  • the temporal course of the pumping power can also be composed of different ramp-shaped and / or non-ramp-shaped gradual and / or step-shaped partial progressions.
  • the drain pump is a rotary pump, which is driven at operating speed at operating speed.
  • the speed of the drain pump is reduced at least temporarily per second by less than 10%, 8%, 6% or 4% of the operating speed.
  • the speed of the lye pump is reduced, starting at the operating speed until the complete shutdown of the drain pump per second by less than said values, for example by the Speed is reduced ramp.
  • the operating speed may be, for example, more than 3500 revolutions per minute (rpm), preferably between about 3500 to 4000 rev / min, more preferably between about 3200 to 3600 rev / min.
  • a drain pump designed as a rotary pump it may be advantageous in a drain pump designed as a rotary pump that during shutdown the speed of the drain pump is at least temporarily reduced by less than 200 rev / min, 150 rev / min, 100 rev / min or 50 rev / min per second.
  • the speed of the lye pump is reduced starting at the operating speed until the complete shutdown of the drain pump by less than these values, for example by the speed is reduced in a ramp.
  • a synchronous pump is used as the drain pump.
  • the shutdown process the gradual shutdown of the performance of the drain pump is done by a drive frequency of an electrical control or an electrical supply to the drain pump is varied. Varying the drive frequency can be done using a frequency converter.
  • the liquid flows due to a difference in height by gravity from the tub in the drain pump.
  • the drain pump is not a suction pump.
  • the liquid flowing into a pump chamber of the drain pump is forced through the pumping action of the drain pump through a pump outlet into the drain line.
  • an outlet valve for example, provided with a trained as a buoyant seal between the tub and the drain pump to prevent backflow from the drain pump into the tub.
  • the Fig. 1 shows a water-conducting household appliance 1, namely in this case a washing machine, with a housing 11 and a tub 2, in which the washing drum is in the case of a washing machine.
  • a Ein Hughes meritor 5 is arranged, which can be filled with detergent.
  • a Inlet line 6 enters fresh water into the dispenser 5 and rinses the detergent in the tub 2.
  • a drain pump 3 is arranged, which pumps the liquid from the tub 2 through an opening into a drain opening 43 drain line 4 through to the outside.
  • an outlet valve 31 Between the tub 2 and the drain pump 3 is an outlet valve 31, which ensures that the leaked out of the tub 2 in the drain pump 3 liquid does not flow back into the tub 2.
  • a vent line 7 which extends between the drain pump 3 and the dispenser 5 and ensures pressure equalization.
  • the liquid is pumped out of the tub 2 by means of the drain pump 3.
  • a liquid column 41 is formed in the discharge line 4. Due to gravity, the liquid column 41 generates a backpressure dependent on the height difference, against which the drain pump 3 must work in order to convey the liquid from the household appliance 1.
  • a return fuse 42 is shown schematically in dashed lines, which is a liquid storage.
  • the drain pump 3 is shut down in a shutdown. Usually, this is done by the energy supply to the drain pump 3 abruptly turned off and / or the drain pump 3 is also braked. As a result, the pumping power of the drain pump 3 drops abruptly from the operation pumping power to a minimum pumping power or to zero. This fact is in the Fig. 2a reproduced in the case of a designed as a rotary pump drain pump 3.
  • the speed of the drain pump 3 falls here during the shutdown in no time from the operating speed, in this case 3500 U / min, to zero. This has the consequence that the pumping force maintained by the pumping power is immediately eliminated and the liquid column 41 located in the discharge line 4 is also abruptly accelerated downwards to the drain pump 3.
  • the spill valve 31 prevents the liquid from entering the tub 2, the backflowing liquid becomes in the Vent line 7 penetrate and lead to the deposition of dirt there - in the worst case up to Ein Hughes meritor 5 up.
  • the shut-off operation of the drain pump 3 is designed such that the pumping power of the drain pump 3 is gradually reduced down to zero from the operation pumping power.
  • Fig. 2b exemplified, which shows a ramped shutdown of the power of the lye pump speed from the operating speed to 3500 rpm to zero.
  • the shutdown of the performance of the drain pump for example, gradually so that a liquid column located in the drain line does not exceed a maximum return flow rate of 0.5 meters per second (m / s) at the return flow from the drain opening 43 back to the drain pump 3.
  • the speed of the liquid flowing back can be determined, for example, by measuring dirt particles in the liquid column 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP12401254.3A 2012-12-18 2012-12-18 Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau Withdrawn EP2746451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12401254.3A EP2746451A1 (fr) 2012-12-18 2012-12-18 Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12401254.3A EP2746451A1 (fr) 2012-12-18 2012-12-18 Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau

Publications (1)

Publication Number Publication Date
EP2746451A1 true EP2746451A1 (fr) 2014-06-25

Family

ID=47681572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12401254.3A Withdrawn EP2746451A1 (fr) 2012-12-18 2012-12-18 Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau

Country Status (1)

Country Link
EP (1) EP2746451A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015209705A1 (de) 2015-05-27 2016-12-01 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät mit verbesserter Betriebszustandsinformation und Verfahren zu seinem Betrieb
EP3219841A1 (fr) * 2016-03-16 2017-09-20 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil ménager à circulation d'eau comprenant un fonctionnement amélioré de la pompe
CN108113614A (zh) * 2017-12-13 2018-06-05 佛山市顺德区美的洗涤电器制造有限公司 洗碗机
EP3741899A1 (fr) 2019-05-20 2020-11-25 BSH Hausgeräte GmbH Appareil d'entretien de linge doté d'une commande

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040078902A1 (en) * 1998-11-17 2004-04-29 Fisher & Paykel Limited Laundry machine
EP1783264A2 (fr) * 2005-11-04 2007-05-09 Fisher & Paykel Appliances Ltd. Améliorations concernant les machines à laver
DE102008055022A1 (de) * 2008-12-19 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät
EP2248935A1 (fr) * 2009-05-04 2010-11-10 Coprecitec, S.L. Appareil de lavage domestique et méthode de contrôle pour celui-ci
DE102010028614A1 (de) * 2010-05-05 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpeneinrichtung sowie wasserführendes Hausgerät mit einer solchen
EP2428608A1 (fr) * 2010-09-14 2012-03-14 Miele & Cie. KG Procédé de fonctionnement d'une pompe dans un appareil transportant l'eau, système mécatronique et lave-linge
DE102011050922B3 (de) 2011-06-08 2012-10-18 Miele & Cie. Kg Waschmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040078902A1 (en) * 1998-11-17 2004-04-29 Fisher & Paykel Limited Laundry machine
EP1783264A2 (fr) * 2005-11-04 2007-05-09 Fisher & Paykel Appliances Ltd. Améliorations concernant les machines à laver
DE102008055022A1 (de) * 2008-12-19 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Abpumpen einer Flüssigkeit aus einem wasserführenden Haushaltsgerät
EP2248935A1 (fr) * 2009-05-04 2010-11-10 Coprecitec, S.L. Appareil de lavage domestique et méthode de contrôle pour celui-ci
DE102010028614A1 (de) * 2010-05-05 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpeneinrichtung sowie wasserführendes Hausgerät mit einer solchen
EP2428608A1 (fr) * 2010-09-14 2012-03-14 Miele & Cie. KG Procédé de fonctionnement d'une pompe dans un appareil transportant l'eau, système mécatronique et lave-linge
DE102011050922B3 (de) 2011-06-08 2012-10-18 Miele & Cie. Kg Waschmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015209705A1 (de) 2015-05-27 2016-12-01 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät mit verbesserter Betriebszustandsinformation und Verfahren zu seinem Betrieb
DE102015209705B4 (de) 2015-05-27 2023-01-26 BSH Hausgeräte GmbH Wasserführendes Haushaltsgerät mit verbesserter Betriebszustandsinformation und Verfahren zu seinem Betrieb
EP3219841A1 (fr) * 2016-03-16 2017-09-20 BSH Hausgeräte GmbH Procédé de fonctionnement d'un appareil ménager à circulation d'eau comprenant un fonctionnement amélioré de la pompe
CN107201632A (zh) * 2016-03-16 2017-09-26 Bsh家用电器有限公司 用于通过改善的泵运行来运行导水的家用器具的方法
CN108113614A (zh) * 2017-12-13 2018-06-05 佛山市顺德区美的洗涤电器制造有限公司 洗碗机
EP3741899A1 (fr) 2019-05-20 2020-11-25 BSH Hausgeräte GmbH Appareil d'entretien de linge doté d'une commande

Similar Documents

Publication Publication Date Title
EP2933365B1 (fr) Procédé de réglage d'un système de pompes à recirculation
EP2746451A1 (fr) Procédé de vidange d'un liquide à partir d'un appareil ménager transportant de l'eau, notamment depuis un lave-linge, et appareil ménager transportant de l'eau
EP3351674B1 (fr) Appareil d'entretien de linge doté d'une commande
DE102014206119B4 (de) Verfahren zum Betreiben einer Pumpe in einem Haushaltsgerät und wasserführendes Haushaltsgerät
DE102013100373A1 (de) Verfahren zum Betreiben eines wasserführenden Haushaltsgerätes und wasserführendes Haushaltsgerät
EP2930261B1 (fr) Procédé de fonctionnement d'un lave-linge et lave-linge
EP3411520B1 (fr) Appareil d'entretien du linge muni d'une commande de pompe
DE102012024761A1 (de) Wasserführendes Haushaltsgerät mit einem Saugheber im Ablauf
DE102016216737B4 (de) Wäschepflegegerät mit einer Steuerung
EP2420609A2 (fr) Pompe à eau de lessive pour appareils ménagers transportant de l'eau et appareil ménager transportant de l'eau
DE102009002224B4 (de) Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine
DE102015209705B4 (de) Wasserführendes Haushaltsgerät mit verbesserter Betriebszustandsinformation und Verfahren zu seinem Betrieb
DE102019117652A1 (de) Waschmaschine mit Hydrozyklon und Verfahren zu deren Betrieb
EP3387305B1 (fr) Système de soupape de commande pour un appareil ménager à circulation d'eau et appareil ménager à circulation d'eau
EP3708705B1 (fr) Procédé de fonctionnement d'un appareil électroménager acheminant des liquides et appareil électroménager acheminant des liquides
EP3387178B1 (fr) Procédé de fonctionnement d'un appareil électroménager et appareil électroménager
EP2511413A1 (fr) Appareil ménager doté d'un réservoir d'eau et d'un guidage du condensat
EP3741899B1 (fr) Appareil d'entretien du linge comprenant une pompe et un dispositif de commande et procédé correspondant de pompage de liquide de lavage
EP2933366A1 (fr) Procédé de fonctionnement d'un lave-linge avec dispositif de recirculation
DE2818464A1 (de) Programmgesteuerte waschmaschine
EP3757273B1 (fr) Dispositif de traitement du linge comprenant une pompe et le procédé pour son fonctionnement
DE102019202693A1 (de) Wäschepflegegerät mit einer Steuerung
EP2762631A1 (fr) Procédé de fonctionnement d'un lave-linge, dispositif de recirculation et lave-linge
DE102020111616A1 (de) Verfahren zur Steuerung der Umflutpumpe einer Waschmaschine oder eines Waschtrockners
DE6915619U (de) Vorrichtung zur steuerung des fluessigkeitsstandes im laugenbehaelter einer wasch- oder geschirrspuelmaschine

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

17P Request for examination filed

Effective date: 20121218

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150105

RBV Designated contracting states (corrected)

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

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: 20190702