EP0821095B1 - Machine à laver utilisant un procédé de lavage amélioré - Google Patents

Machine à laver utilisant un procédé de lavage amélioré Download PDF

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Publication number
EP0821095B1
EP0821095B1 EP97202248A EP97202248A EP0821095B1 EP 0821095 B1 EP0821095 B1 EP 0821095B1 EP 97202248 A EP97202248 A EP 97202248A EP 97202248 A EP97202248 A EP 97202248A EP 0821095 B1 EP0821095 B1 EP 0821095B1
Authority
EP
European Patent Office
Prior art keywords
detergent
water
tank
washing machine
supply duct
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.)
Expired - Lifetime
Application number
EP97202248A
Other languages
German (de)
English (en)
Other versions
EP0821095A3 (fr
EP0821095A2 (fr
Inventor
Giuseppe Tornari
Fiorenzo Parolini
Ernesto Rebolini
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.)
PHILCO ITALIA SpA
Original Assignee
PHILCO ITALIA SpA
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 PHILCO ITALIA SpA filed Critical PHILCO ITALIA SpA
Publication of EP0821095A2 publication Critical patent/EP0821095A2/fr
Publication of EP0821095A3 publication Critical patent/EP0821095A3/fr
Application granted granted Critical
Publication of EP0821095B1 publication Critical patent/EP0821095B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D06F39/086—Arrangements for avoiding detergent wastage in the discharge conduit

Definitions

  • the present invention refers to an improved laundry washing machine.
  • a first category of said systems includes a pump for the forced recirculation of the washing liquid during the operative cycle of the washing machine.
  • a second category provides for the addition of a shut-off valve on the discharge tube of the wash tank.
  • a third category provides for the addition of a supplementary tube for the recirculation of the washing liquid, recirculation that is determined by the movement of the basket during washing.
  • a laundry washing machine is also known, having the features listed in the preamble of annexed claim 1; in this known machine, a water supply pipe to a detergent container is provided with a change-over valve, adapted to by-pass water for the washing process through a feed pipe into the washing tank, said pipe being preferably arranged for leading directly into the outlet of the tank itself. In this way, detergent being subsequently conveyed with water from the container to the tank cannot enter the drain outlet of the latter, which results in being already filled with water.
  • the object of the present invention is to provide a laundry washing machines that permits to keep down the consumption of detergents without requiring the installation of further components in the machine.
  • a detergent savings is achieved, due to the fact that in the pre-filling step of (clean) water only the discharge tube is filled, and during the successive water and detergent loading step - given that the basket is kept in rotation, preferably in one direction - the detergent is kept as far away from the discharge tube as possible, so as to present the detergent itself, not yet dissolved in the water, from precipitating into the discharge tube.
  • FIG. 1 a washing machine is schematically shown in section view according to a vertical plane.
  • the washing machine comprises a washing tank 1, inside which a rotatable basket 2 is lodged, rotated by a motor 3.
  • Tank 1 has an inlet tube 4 with an upper part connected to a detergent dispenser 5, and an outlet tube 6 connected, at one end, with the bottom of the tank 1 and, at the other end, to a discharge pump 7.
  • the inside of the detergent dispenser comprises a number of compartments 8A, 8B, 8C separated from each other. To each compartment is associated a respective derivation 9A, 9B, 9C of a clean water supply duct 9. Between each of the derivations 9A, 9B, 9C and the duct 9 is interposed a respective intercepting valve 10A, 10B, 10C individually controlled by a control unit 11, for example composed of a timer normally included in the known washing machines. Timer 11 also controls the activation of motor 3.
  • a control unit 11 for example composed of a timer normally included in the known washing machines. Timer 11 also controls the activation of motor 3.
  • the first compartment 8A of the detergent dispenser 5 is empty, while in the second compartment 8B the detergent (typically in powder form) is loaded.
  • the third compartment 8C can, for example, contain a softener to be employed during the rinsing step.
  • the washing process carried out by the laundry machine according to the present invention comprises a first step during which valve 10A associated with the first compartment 8A of the detergent dispenser (the empty one) is opened so as to load a pre-established quantity of clean water, which determines a pre-filling of the discharge duct 6 and also, partially, of tank 1.
  • the basket can be left still. The duration of this step depends on the quantity of water that one may want to pre-load into the washing tank.
  • valve 10A is shut off and valve 10B associated with the second compartment 8B of dispenser 5 (the one containing powdered detergent) is opened.
  • timer 11 commands the activation of motor 3 to bring about the rotation of the basket 2 (in the example, clockwise).
  • the water coming from derivation 9B of the duct 9 passes into compartment 8B, draws out the detergent and carries it into tank 1 where the water with the detergent can pass into basket 2 through holes normally provided in the walls of the same.
  • the detergent is not completely dissolved yet. Nevertheless, thanks to the fact that the discharge tube 6 was pre-filled before and that the basket rotates, it is possible to avoid that the particles of detergent still in a solid state can precipitate into the discharge tube 6, where it would remain useless and wasted.
  • the quantity of water that is loaded in the pre-filling step of the tank, the position of inlet tube 4, the position of discharge tube 6, and the direction of rotation of the basket during the water loading step (with detergent added) must be determined in such a way that the solid detergent which descends into the tank together with the water remains substantially all inside the tank itself and is not allowed to descend into the dead zones (discharge tube) connected to the tank.

Claims (4)

  1. Machine à laver le linge comportant
    une cuve de lavage (1), ayant un tube d'entrée (4) et un tube de sortie (6),
    un panier (2) logé de façon rotative dans ladite cuve (1),
    des moyens de moteur (3) destinés à entraíner en rotation ledit panier (2),
    un distributeur de détergent (5) qui est relié à ladite cuve (1) au moyen dudit tube d'entrée (4),
    un conduit d'alimentation en eau (9), qui est relié audit distributeur de détergent (5),
    des moyens de soupape (10A, 10B, 10C) destinés à commander l'admission de l'eau propre dudit conduit d'alimentation (9) vers ledit distributeur de détergent (5),
    des moyens de commande (11), qui commandent lesdits moyens de moteur (3) et lesdits moyens de soupape (10A, 10B, 10C),
    le fonctionnement de la machine prévoyant une étape de chargement d'eau et de détergent dans ladite cuve de lavage (1) précédée par une étape de pré-remplissage de la cuve de lavage (1) avec de l'eau seulement,
    caractérisée en ce que lesdits moyens de soupape comportent plusieurs soupapes d'interception (10A, 10B, 10C), chacune d'elles étant interposée entre ledit conduit d'alimentation (9) et une dérivation respective (9A, 9B, 9C) qui est définie à une extrémité du conduit d'alimentation en eau (9), chaque dérivation (9A, 9B, 9C) étant associée à un compartiment de détergent respectif (8A, 8B, 8C) dudit distributeur (5), lesdites soupapes d'interception (10A, 10B, 10C) pouvant être commandées individuellement par lesdits moyens de commande (11), lesdits moyens de commande (11) étant prévus pour
    actionner une première (10A) desdites soupapes d'interception (10A, 10B, 10C) afin de permettre à de l'eau propre provenant dudit conduit d'alimentation (9) d'atteindre, par l'intermédiaire d'une première (9A) desdites dérivations (9A, 9B, 9C), un premier (8A) desdits compartiments (8A, 8B, 8C) qui est vide de détergent, et d'atteindre ensuite par l'intermédiaire dudit tube d'entrée (4) ladite cuve de lavage (1), afin de charger dans cette dernière une première quantité d'eau,
    actionner une deuxième (10B) desdites soupapes d'interception (10A, 10B, 10C) afin de permettre à de l'eau propre provenant dudit conduit d'alimentation (9) d'atteindre, par l'intermédiaire d'une deuxième (9B) desdites dérivations (9A, 9B, 9C), un deuxième (8B) desdits compartiments (8A, 8B, 8C) contenant du détergent solide, et d'atteindre ensuite par l'intermédiaire dudit tube d'entrée (4) ladite cuve de lavage (1), afin de charger dans cette dernière une deuxième quantité d'eau qui est mélangée au détergent,
    actionner lesdits moyens de moteur (3) afin d'entraíner en rotation ledit panier (2) alors que ladite deuxième quantité d'eau est chargée dans ladite cuve (1).
  2. Machine à laver le linge selon la revendication 1, caractérisée en ce qu'au moins un troisième compartiment de détergent (8C) est défini dans ledit distributeur (5), auquel est associée une dérivation respective (9C), portant une soupape d'interception respective (10C).
  3. Machine à laver le linge selon la revendication 2, caractérisée en ce que ledit deuxième compartiment (8B) est prévu pour contenir un détergent sous forme de poudre et ledit troisième compartiment (8C) est prévu pour contenir un assouplissant.
  4. Machine à laver le linge selon la revendication 1, caractérisée en ce que lesdits moyens de commande (11) prévoient de maintenir constant le sens de rotation dudit panier (2) tandis que ladite deuxième quantité d'eau est chargée dans ladite cuve (1).
EP97202248A 1996-07-22 1997-07-17 Machine à laver utilisant un procédé de lavage amélioré Expired - Lifetime EP0821095B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI961522 1996-07-22
IT96MI001522A IT1283476B1 (it) 1996-07-22 1996-07-22 Procedimento di lavaggio perfezionato per macchina lavabiancheria, e macchina llavabiancheria che attua tale procedimento

Publications (3)

Publication Number Publication Date
EP0821095A2 EP0821095A2 (fr) 1998-01-28
EP0821095A3 EP0821095A3 (fr) 1998-09-09
EP0821095B1 true EP0821095B1 (fr) 2002-05-22

Family

ID=11374632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97202248A Expired - Lifetime EP0821095B1 (fr) 1996-07-22 1997-07-17 Machine à laver utilisant un procédé de lavage amélioré

Country Status (5)

Country Link
EP (1) EP0821095B1 (fr)
AT (1) ATE217920T1 (fr)
DE (1) DE69712680T2 (fr)
ES (1) ES2180884T3 (fr)
IT (1) IT1283476B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008119630A1 (fr) * 2007-03-29 2008-10-09 Arcelik Anonim Sirketi Lave-linge avec mélangeur contribuant à la dissolution de la lessive
JP4831188B2 (ja) * 2009-03-09 2011-12-07 パナソニック株式会社 ドラム式洗濯機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396821A (de) * 1961-11-15 1965-08-15 Bauknecht Gmbh G Waschmaschine
IT1083309B (it) * 1977-05-13 1985-05-21 Zanussi A Spa Industrie Macchina lavabiancheria provvista di mezzi per imedire perdite del detersivo
DE3734117A1 (de) * 1987-10-09 1989-04-20 Bauknecht Hausgeraete Trommelwaschmaschine
JPH0231796A (ja) * 1988-07-22 1990-02-01 Toshiba Corp 洗濯機

Also Published As

Publication number Publication date
DE69712680T2 (de) 2003-01-30
ATE217920T1 (de) 2002-06-15
EP0821095A3 (fr) 1998-09-09
DE69712680D1 (de) 2002-06-27
ES2180884T3 (es) 2003-02-16
EP0821095A2 (fr) 1998-01-28
IT1283476B1 (it) 1998-04-21
ITMI961522A1 (it) 1998-01-22
ITMI961522A0 (fr) 1996-07-22

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