EP2138624B1 - Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung - Google Patents

Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung Download PDF

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Publication number
EP2138624B1
EP2138624B1 EP09158273A EP09158273A EP2138624B1 EP 2138624 B1 EP2138624 B1 EP 2138624B1 EP 09158273 A EP09158273 A EP 09158273A EP 09158273 A EP09158273 A EP 09158273A EP 2138624 B1 EP2138624 B1 EP 2138624B1
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EP
European Patent Office
Prior art keywords
tank
liquid
washing
laundry
machine
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.)
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Application number
EP09158273A
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English (en)
French (fr)
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EP2138624A1 (de
Inventor
Silvano Fumagalli
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Candy SpA
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Candy SpA
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Application filed by Candy SpA filed Critical Candy SpA
Priority to EP09158273A priority Critical patent/EP2138624B1/de
Publication of EP2138624A1 publication Critical patent/EP2138624A1/de
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    • 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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • 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
    • 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
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • the present invention relates to a method for washing and/or rinsing in a laundry washing machine of the type comprising a tank, said tank being provided with a bottom portion, a drum with perforated walls for the laundry to be washed arranged inside the tank and mounted for rotating around a substantially horizontal axis, a hydraulic system comprising a plurality of nozzles for releasing the liquids into the tank and an opening in the lowest part of the tank bottom portion for the discharge of said liquids, a reservoir arranged below the bottom portion of the tank and able to hold a predetermined amount of washing and/or rinsing liquid, said reservoir being hydraulically connected to said nozzles, to said opening in the lowest part of the tank bottom portion, to an outlet outside the machine, to a water source, to a pump for discharging liquids from the machine and to a pump for recirculating liquids from and to the tank passing through said reservoir, said method comprising a phase of wetting the laundry placed in the drum by loading a predetermined amount of washing and/
  • Laundry washing machines operating in accordance with the washing and/or rinsing method described above are known in the art of this field.
  • the liquid for wetting the laundry placed in the drum in order to be washed is initially loaded via the release into the tank of a specific amount of liquid, depending substantially on the weight of the laundry to be washed, drawn from an appropriate source of hot or cold water.
  • the liquid passes through the laundry and accumulates in the bottom of the tank until reaching a particular level through which the drum with the laundry passes, resulting in the liquid permeating the laundry during rotation thereof.
  • This occurrence reflects the need to include an electric motor in the machine provided with suitable torque and therefore suitable power, with relative absorption of energy, in order to rotate the drum even during the initial phase of wetting the laundry.
  • the amount of liquid when released into the hydraulic system of the machine and in particular into the tank of said machine in order to wet the laundry, reaches a pressure head in static conditions which necessarily exceeds the plane tangential to the edge of the drum since, only in dynamic conditions due to the recirculation during the operative washing and/or rinsing phases, the level of liquid is made to decrease to the level of the aforementioned plane tangential to the edge of the drum.
  • the object of the present invention is to be able to further reduce the absorption of energy by the laundry washing machine, thus reducing the torque and power necessary for the electric motor rotating the drum as well as that necessary for heating the washing liquid.
  • FIG. 1 a cross-section of a tank for a laundry washing machine with an associated drum is shown.
  • the tank of a laundry washing machine is indicated by the reference numeral 1.
  • the tank 1 is provided with a bottom portion la having a circular shape.
  • a drum 2 is arranged, which, in a conventional manner, is set in rotation by an appropriate electric motor and relative mechanical transmission, not shown, around a substantially horizontal axis X-X.
  • a reservoir 3 is provided below the bottom portion of the tank 1 and it is connected to the lowest part of the bottom portion of the tank, where an opening 4 is provided, via a conduit 5 and to a plurality of nozzles 6 via the recirculation conduit illustrated by the line 7.
  • the reservoir 3 is shown in the drawing as being vertically below the tank 1, is should be understood in the description and in the relevant claims that it can be located below the tank but at a side of the vertical line passing through the opening 4 of the tank bottom portion.
  • the nozzles 6 are arranged in the upper part of the tank 1 and allow washing and/or rinsing liquid to be released through the perforated peripheral wall of the drum 2.
  • Another nozzle 8 fed via the conduit illustrated by line 9, is in turn connected to the conduit 7, and may be provided for releasing washing and/or rinsing liquid at the access door to the drum 2.
  • conduits 7 and 9 feeding the nozzles 6 and 8 are connected to a recirculation pump 10 provided on the reservoir 3, upon which a discharge pump 11 is also mounted.
  • Said discharge pump 11 is connected via a conduit 12 to an outlet 13 outside the laundry washing machine.
  • An external water source identified with the reference numeral 14 loads the hydraulic system with the necessary and predetermined amount of liquid for operation of the machine via a valve 15 and a conduit 16.
  • a detergent cassette drawer 17 may be inserted into the path of the conduit 16 if the machine programme provides for this.
  • a pressure gauge 18 is arranged on the reservoir 3 for measuring and thus regulating the height of the liquid column which is introduced into the hydraulic system of the machine when the valve 15 is opened.
  • the reservoir 3 comprises a resistance element 19 powered electrically via external terminals 20.
  • a conventional filter is also inserted into the hydraulic system of the machine, for example in the discharge conduit 12 or, alternatively, in the recirculation conduit 7.
  • the phase of wetting the laundry placed in the drum 2 is carried out by activating the recirculation pump 10 and loading a predetermined amount of liquid into the hydraulic system of the machine.
  • the recirculation pump 10 sends the liquid to the nozzles 6 and 8 resulting in the laundry being wetted, even with a small amount of liquid.
  • this amount of liquid is such that a dynamic level is able to be established in the system which does not exceed the horizontal plane A tangential to the edge 2a of the drum 2, when considered at its lowest point having regard to the axis of rotation X-X.
  • the drum 2 is simultaneously set in rotation in order to wet the laundry and to diffuse liquid thereinto, it rotates without there being a level of liquid in the tank which may resist the movement.
  • Recirculation during the phase of wetting the laundry allows the hydraulic system of the laundry washing machine to be loaded and thus used even with a reduced amount of liquid relative to the amount strictly necessary, so the dynamic level does not exceed or remains at the level of the horizontal plane A tangential to the edge 2a of the drum 2, having regard to the axis of rotation X-X.
  • the reduced amount of water also results in a significant saving of electrical energy used for heating the water during the successive washing phases.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (4)

  1. Verfahren zum Waschen und/oder Spülen in einer Wäschewaschmaschine des Typs, der beinhaltet eine Wanne (1), wobei die Wanne vorgesehen ist mit einem Bodenbereich (1a), einer in der Wanne angeordneten Trommel (2) zum Waschen von Wäsche, die zur Rotation um eine im Wesentlichen horizontale Achse (X-X) angebracht ist, ein Hydrauliksystem, das eine Vielzahl von Düsen (6, 8) zum Einleiten der Flüssigkeiten in die Wanne (1) umfasst, und eine Öffnung (4) im untersten Teil des Bodenbereichs (1a) der Wanne zum Ablassen der Flüssigkeiten, einen Behälter (3), der unter dem Bodenbereich der Wanne angeordnet ist und der eine bestimmte Menge an Wasch- oder Spülflüssigkeit enthalten kann,
    wobei der Behälter (3) hydraulisch mit den Düsen (6, 8) verbunden ist, mit der Öffnung (4) im untersten Teil des Bodenbereichs der Wanne, mit einem Ablauf (13) außerhalb der Maschine, mit einer Wasserquelle (14), mit einer Pumpe (11) zum Ablassen der Flüssigkeiten aus der Maschine und mit einer Pumpe (10) zum erneuten Zirkulieren der Flüssigkeiten aus und in die Wanne (1), wobei der Behälter (3) durchlaufen wird,
    wobei das Verfahren umfasst eine Phase, in der die in der Trommel (2) angeordnete Wäsche benässt wird, indem eine bestimmte Menge an Wasch- und/oder Spülflüssigkeit in das Hydrauliksystem der Maschine geladen wird, eine Mehrzahl an erneuten Zirkulationsphasen der Wasch- und/oder Spülflüssigkeit zum Waschen und Spülen der Wäsche,
    und schließlich mindestens eine Phase des Ablassens der gebrauchten Wasch- und/oder Spülflüssigkeit,
    dadurch gekennzeichnet, dass
    die Phase des Benässens der Wäsche in der Trommel dadurch verwirklicht wird, indem in das Hydrauliksystem der Maschine eine Flüssigkeitsmenge geladen wird, so dass daraus bei der erneuten Zirkulation ein dynamischer Level an Flüssigkeit entsteht, der die horizontale Ebene (A) tangential zur Kante (2a) der Trommel (2) nicht übersteigt, wenn man die niedrigste Position davon mit Bezug zur Rotationsachse (X-X) berücksichtigt.
  2. Verfahren gemäß Anspruch 1, wobei die in das Hydrauliksystem der Maschine geladene Flüssigkeitsmenge dergestalt ist, dass ihr Level in statischen Zuständen nicht die horizontale Ebene (B) tangential zum untersten Teil des Bodenbereichs (1a) der Wanne (1) übersteigt.
  3. Verfahren gemäß Anspruch 1, wobei der Anteil der Flüssigkeit, die in der Phase des Benässens der Wäsche in der Trommel über die erneute Zirkulation verwendet wird, in statischen Zuständen betrachtet im Wesentlichen ¾ der Gesamtmenge der im Hydrauliksystem vorhandenen Flüssigkeit entspricht.
  4. Verfahren gemäß einem der Ansprüche 1 bis 3, wobei die Flüssigkeitsmenge, die aus der Wasserquelle stammt und in das Hydrauliksystem geladen wird, zwischen 400 und 600 Milliliter liegt.
EP09158273A 2008-06-24 2009-04-20 Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung Active EP2138624B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09158273A EP2138624B1 (de) 2008-06-24 2009-04-20 Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08425442 2008-06-24
EP09158273A EP2138624B1 (de) 2008-06-24 2009-04-20 Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung

Publications (2)

Publication Number Publication Date
EP2138624A1 EP2138624A1 (de) 2009-12-30
EP2138624B1 true EP2138624B1 (de) 2011-11-30

Family

ID=39967982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09158273A Active EP2138624B1 (de) 2008-06-24 2009-04-20 Verfahren zum Waschen und/oder Spülen von einer Waschmaschine mit erhöhter Energieeinsparung

Country Status (3)

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EP (1) EP2138624B1 (de)
AT (1) ATE535639T1 (de)
ES (1) ES2376614T3 (de)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626588B1 (fr) 1988-01-28 1991-04-26 Martinez Georges Machine a laver le linge dont la cuve est equipee d'elements de lestage
DE4222944C2 (de) 1992-07-11 1998-06-18 Aeg Hausgeraete Gmbh Programmgesteuerte Trommelwasch- und Schleudermaschine mit einem schwingend aufgehängten Waschaggregat
IT1256377B (it) 1992-11-09 1995-12-04 Silvano Fumagalli Macchina lavabiancheria a flusso dinamico
US5345637A (en) 1993-04-27 1994-09-13 Whirlpool Corporation High performance washing system for a horizontal axis washer
FR2706915B1 (de) 1993-06-24 1995-09-08 Martinez Georges Mathias
IT1275186B (it) 1995-02-10 1997-07-30 Candy Spa Procedimento di lavaggio per macchina lavabiancheria
IT1282275B1 (it) * 1995-12-06 1998-03-16 Electrolux Zanussi Elettrodome Lavabiancheria con cicli di risciacquo a basso consumo
FR2828503B1 (fr) 2001-08-08 2003-10-31 Georges Mathias Martinez Machine a laver et a essorer a concept de cuve recyclant l'eau
KR100504501B1 (ko) * 2003-04-14 2005-08-02 엘지전자 주식회사 증기분사식 드럼세탁기의 세탁방법
DE102004039662A1 (de) * 2004-08-16 2006-02-23 BSH Bosch und Siemens Hausgeräte GmbH Programmgesteuerte Waschmaschine
KR100657478B1 (ko) * 2004-10-21 2006-12-13 엘지전자 주식회사 드럼 세탁기의 제어 방법
PL1734167T3 (pl) * 2005-06-17 2008-03-31 Electrolux Home Products Corp Nv Sposób nawilżania prania i pralki

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ES2376614T3 (es) 2012-03-15
ATE535639T1 (de) 2011-12-15
EP2138624A1 (de) 2009-12-30

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