EP0490577B1 - Dispositif diffuseur - Google Patents

Dispositif diffuseur Download PDF

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Publication number
EP0490577B1
EP0490577B1 EP91311313A EP91311313A EP0490577B1 EP 0490577 B1 EP0490577 B1 EP 0490577B1 EP 91311313 A EP91311313 A EP 91311313A EP 91311313 A EP91311313 A EP 91311313A EP 0490577 B1 EP0490577 B1 EP 0490577B1
Authority
EP
European Patent Office
Prior art keywords
hollow body
composition
holes
dispensing
aperture
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
EP91311313A
Other languages
German (de)
English (en)
Other versions
EP0490577A1 (fr
Inventor
Alan Edward Clark
Robin John Green
Mary-Anne Christine Hodgens
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10686662&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0490577(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP0490577A1 publication Critical patent/EP0490577A1/fr
Application granted granted Critical
Publication of EP0490577B1 publication Critical patent/EP0490577B1/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 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/024—Devices for adding soap or other washing agents mounted on the agitator or the rotating drum; Free body dispensers

Definitions

  • This invention relates to a device for dispensing detergent or other composition in a washing machine.
  • Such dispensing devices can be useful in the washing of laundry with both liquid detergent and solid detergent such as in powdered, granular, flake or particulate form particularly when the compositions are difficult to dispense by means of automatic dosing systems incorporated into the washing machine or, even if they can be automatically dispensed by such automatic dosing systems, the dosing systems and the design of the washing machine are such that a proportion of the detergent composition flows to dead areas of the machine and is not fully drawn into the wash liquor in contact with the laundry.
  • the detergent composition prefferably dispensed from such a dispensing device at the commencement, or shortly after the commencement, of the washing cycle of the machine in order to maximise the exposure of the laundry to wash liquor containing the detergent composition. This is particularly important when the wash cycle time of the machine is relatively short.
  • EP 343070 examples of dispensing devices for use in the washing of laundry in washing machines with a particulate detergent are proposed in EP 343070 which essentially comprise a flexible bag shaped sleeve having a mouth attached to a rigid ring member which maintains the mouth of the bag open during the wash.
  • the bag is made from material which allows the aqueous washing solution to penetrate through the bag but which is capable of retaining the particulate product while it is still solid.
  • the ring member is a relatively complex plastics moulding to which the separately manufactured flexible bag has to be attached and the embodiment in commercial use in the UK corresponds substantially to the construction shown in Figure 17 which comprises three individual plastics mouldings which are assembled together with the flexible bag.
  • JP Utility Model No. 51-47412 describes a dispensing device for granular or liquid detergent compositions having a casing with a smooth spherical shaped exterior.
  • the casing may be separated into two halves, one of which is provided with a plurality of outlet apertures, for filling with the detergent composition, the composition being filled into a casing halve having an imperforate wall. After filling and closing the two halves together, the device is placed on laundry in the washing machine drum.
  • a float chamber is incorporated in the imperforate halve so that as soon as the device floats in water in the machine, the device will adopt a position with the float chamber uppermost and the outlet apertures downwards to dispense the detergent composition into the water.
  • This construction suffers from the disadvantage that it comprises three individual mouldings and the user is required to separate the two halves for filling which can result in one halve being mislaid. Furthermore if water enters the float chamber the device will not function effectively in a washing machine in which the drum axis is vertical.
  • US 3 400 808 describes a dispenser for dispensing bleach powder, or powders other than bleach, or mixtures of powders in automatic washing machines which like that of JP 51-47412 is in two halves, one of which is imperforate and the other is perforated by dispensing apertures. To ensure that the powder is transferred to the perforated halve during the time the dispenser is moving about in the wash of a washing machine, the perforate halve is weighted. As with the device of JP 51-47412, the device is in two halves which the user has to separate and join together again when filling.
  • a dispensing device for dispensing a detergent or like composition in a washing machine according to the preamble of claim 1 comprising a hollow body having a filling and dispensing opening and a smooth resilient wall deformable within the drum of the machine by wash liquor loaded laundry articles and resilient to return to the original shape when the deforming force is removed.
  • a device is economically manufactured in a single plastics moulding and can be re-used very many times before it has to be discarded, thus minimising the amount of plastics material to be dispcsed of.
  • the device does not however readily dispense all detergent or like compositions in a all types of washing machines.
  • a device for dispensing a detergent or other composition in a washing machine comprising a unitary hollow body for containing the composition and having a permanently open filling and dispensing aperture wherein the hollow body comprises a self standing body wall and the body wall opposite the filling aperture is provided with one or more unobstructed holes having a size through which wash liquor can enter and leave the hollow body whilst preventing the escape of the composition prior to the device being contacted by the wash liquor.
  • Such a device can be readily and economically manufactured in, eg. plastics material such as PVC or polyurethane and can be used in washing machines having the axis of the drum horizontal or vertical without damaging the laundry to maximise the effectiveness of the composition being dispensed.
  • the hole or holes allow wash liquor to enter and leave the hollow body therethrough in addition to through the filling opening, thus facilitating the dispensing of the composition and in particular ensuring that all the composition is dispensed as early as possible in the machine cycle.
  • Providing the hole or holes opposite the filling opening ensures that the hole or holes are submersed when the filled device is allowed to float in water.
  • the device is thus particularly suited for use in a machine having a drum with a vertical axis in which the device is filled with the desired measure of the composition and placed on top of the laundry to be treated.
  • the device As the water level in the drum reaches the top of the laundry, water contacts the underside of the hollow body and enters through the hole or holes so that the device rapidly sinks below the water level.
  • the composition is effectively dispensed out through the unobstructed hole or holes and the filling aperture by even the most gentle of agitation of the wash liquor.
  • the entry of the water to the underside of the bed of the measure of composition filled into the hollow body is effective in facilitating the dilution or dissolving of the composition and particularly in the case of a solid composition helps to dislodge the composition from the inside wall of the device.
  • the device according to the invention can equally be used in washing machines having the drum axis horizontal.
  • the unobstructed hole or holes again allow ready entry of the wash liquor into the hollow body and thus facilitate the dispensing of the composition.
  • the exterior wall of the hollow body should preferably be smooth, that is to say free from corners, edges, re-entrant surfaces or other irregularities which could damage the laundry.
  • the hollow body is provided with a self-restoring flexible wall.
  • a self-restoring flexible wall Particularly when the device is used in a machine with the drum axis horizontal, the effect of the laundry falling into the device from time to time and deforming the resilient wall further assists in dislodging any composition, especially solid composition, from the inside wall of the body.
  • the wall is self-restoring so that it returns to its original shape when the deforming force is removed. Whilst the deforming forces applied to the hollow body will be less in a machine with the drum axis vertical, the resilient walls also have the advantage of minimising noise when the device contacts the drum which is of benefit in both types of washing machine.
  • each of the hole or holes is determined by the detergent composition or like to be contained within the body.
  • the size of a hole will depend upon the thickness of the wall as well as the viscosity and structure of the liquid.
  • the device is particularly suitable for solid compositions in particulate form and we have found that a hole having a diameter of less than 2.00 mm and preferably less than 0.75 mm in a wall thickness of 1.1 mm is effective in preventing a concentrated detergent powder from escaping from the hollow body before use. If the hole is too small, there can be a tendency for the powder to clog in the hole and prevent the ingress of water so the minimum hole diameter should be 0.1 mm and preferably 0.5 mm.
  • the number of holes may be varied according to the size of hole and nature of the composition but should be sufficient in number and size that the device, when filled with a measure of the composition, is filled through the holes with a quantity wash liquor to sink the device entirely below the wash liquor level in less than three minutes without any agitation, preferably less than one minute and more preferably in 30 seconds or less. If this parameter is met the device will be capable of enhanced dispensing in both types of washing machine and the number of holes required can be as low as one. Preferably at least four holes are provided to minimise any risk that a temporary blockage unduly restricts the entry of wash liquor.
  • a suitable number of holes has been found to be between 8 and 36, conveniently 24.
  • the holes are preferably equispaced on one or more circles, the centres of which lie on a line passing through the centre of the filling aperture at right angles to the plane of the aperture. Arranging the holes in this way tends to ensure that compositions filled through the filling aperture covers the holes so that in use the wash liquor enters through the holes directly into the composition.
  • the unobstructed hole or holes can be of any shape.
  • a hole when the composition is solid, a hole can be a slot having a width which prevents the escape of the composition and a length greater than the width. Two or more such slots may also be in intersecting relationshp provided the maximum size of hole at the intersection does not allow the composition to escape.
  • the device is provided with a flattened base area on which it can stand with the filling and dispensing aperture uppermost, the plurality of holes being disposed in the hollow body adjacent the base.
  • the device can be stood on the base as it is being filled with the composition and since the holes are adjacent the base it is ensured that they are below the fill level and covered by the composition filled into the hollow body.
  • an insert can be disposed within the filling aperture, the insert having a number of openings therein through which the composition can be filled into the hollow body.
  • the openings in the insert can be so shaped and arranged that whilst still allowing the filling of the hollow body, the insert nevertheless minimises the dispensing of the composition before it is at least partially diluted or dissolved in the wash liquor thus minimising the risk of the composition in concentrated form contacting the laundry when concentrated composition might damage the laundry.
  • a device for dispensing a detergent or other composition in a washing machine comprising a unitary hollow body containing a measure of the composition to be dispensed, the device having a permanently open filling and dispensing aperture, the hollow body wall opposite the filling aperture being provided with at least one unobstructed hole having a size through which wash liquor can enter and leave the hollow body whilst preventing the escape of composition prior to the device being contacted by wash liquor, the number and position of the holes being such that when the device is floated on water with the filling aperture uppermost the device sinks below the water level is less than one minute.
  • the invention also provides a method of washing laundry in the drum of a washing machine in which a re-usable dispensing device is filled with a detergent or other composition and placed in the drum together with the laundry the device comprising a unitary hollow body having a self standing body wall with a smooth exterior wall and a permanently open filling and dispensing aperture and at least one unobstructed hole opposite the filling aperture the size and shape of which prevents the escape of the composition prior to contact with the water, water entering the hollow body therethrough to facilitate the dispensing of the composition.
  • the drum of the washing machine can be vertical, the water entering the hollow body through the hole or holes and sinking the dispensing device in less than one minute. This ensures that the composition is rapidly dispensed shortly after the commencement of the washing cycle to ensure that the laundry is subjected to the detergent composition for most of the washing cycle time.
  • the dispensing device indicated generally by reference numeral 1 has an external smooth outer surface 2 of generally spherical shape having a flattened base area 3 on which the device can stand.
  • the device has a thin wall 4 to form a hollow body 5 which can be filled through a filling and dispensing aperture 6 with the composition to be dispensed.
  • the filling aperture 6 is arranged to be uppermost when the device is stood on the base area 3 with the planes of the base 3 and aperture 6 parallel to one another.
  • the peripheral rim of the aperture 6 is slightly enlarged as shown at 7 to avoid any possibility of an edge which in use might contact and damage laundry.
  • a plurality of holes 8 are provided in the hollow body 5 which pass completely through the wall 4.
  • the holes are equispaced on two concentric circles, the centres of which lie on a line 9 passing through the centre of the filling aperture at right angles to the plane of the aperture. This arrangement ensures that the holes are distributed around the hollow body and below the opening so that composition filled through the aperture 6 will lie over the holes 8.
  • One or more fill lines 10 can be marked on the hollow body to indicate to the user the quantity of composition to be filled into the device, the fill lines 10 being above the holes 8 so that all the holes 8 are covered by composition when initially filled.
  • the wall 4 is transparent or translucent so that the user can observe the level of the composition in the hollow body and compare that level to the fill line 10.
  • a device as shown in the drawings can be readily made of plastics material such as polyurethane. Typical dimensions for dispensing a dose of 83.5 ml of detergent composition would be a diameter of 77 mm and a height of 60 mm giving a fill line level passing approximately through the centre of the spherical shape. A filling aperture of 56 mm diameter allows the device to be readily filled without undue risk of spilling. With 24 holes as shown on two concentric circles, each hole being 0.5 mm diameter and 1.1 mm long, the device when filled with a concentrated detergent powder to the indicated level and floated in water has sunk below the water level in less than one minute.
  • the composition has been rapidly dispensed into the wash liquor.
  • the wash liquor entered the holes 8 and wetted the composition as soon as the water level reached the underside of the device.
  • the water tended to enter as fine jets and minimise any tendency of the composition to adhere to the inner wall surface. Any clogging of the holes 8 by the wetted composition is temporary and the holes 8 and aperture 6 ensured that the entire contents of the device were dispensed even with gentle agitation.

Landscapes

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

Claims (13)

  1. Dispositif (1) servant à distribuer une composition de détergents ou une composition autre dans une machine à laver, comprenant un corps creux (5) unitaire servant à contenir la composition et ayant un orifice (6) de remplissage et de distribution ouvert en permanence, le corps creux (5) comprenant une paroi (4) de corps autoporteur, caractérisé en ce que la paroi du corps (4), placée à l'opposé de l'orifice de remplissage (6), est pourvue d'un ou de plusieurs trous non obstrués (8) ayant une dimension à travers laquelle le bain de lessive peut entrer et sortir du corps creux (5), tout en empêchant la composition de s'échapper avant que le dispositif (1) vienne en contact avec le bain de lessive.
  2. Dispositif (1) selon la revendication 1, caractérisé en ce que le corps creux (5) a une paroi extérieure lisse (4) exempte d'irrégularités qui pourraient abîmer le linge.
  3. Dispositif (1) selon la revendication 1 ou 2, caractérisé en ce que la paroi (4) du corps creux est une paroi (4) flexible reprenant automatiquement sa forme initiale.
  4. Dispositif (1) selon la revendication 1 ou 2 ou 3, caractérisé en ce que le ou les trous (8) ont la forme d'une fente.
  5. Dispositif (1) selon la revendication 1 ou 2 ou 3, caractérisé en ce que le ou les trous (8) sont circulaires avec un diamètre inférieur à 2,00 mm.
  6. Dispositif (1) selon la revendication 5, caractérisé en ce que le diamètre du trou (8) est supérieur à 0,1 mm.
  7. Dispositif (1) selon la revendication 6, caractérisé en ce que le diamètre du trou (8) est compris entre 0,5 mm et 0,75 mm.
  8. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu entre 8 et 36 trous (8).
  9. Dispositif (1) selon la revendication 8, caractérisé en ce que les trous (8) sont placés à équidistance sur un ou plusieurs cercles centrés sur une ligne passant par le centre de l'orifice de remplissage (6) à angles droits par rapport au plan de l'orifice (6).
  10. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps creux (5) est pourvu d'une zone de base aplatie (3) sur laquelle il peut tenir debout, l'orifice de remplissage et de distribution (6) étant sur le dessus, le ou les trous (8) étant disposés dans le corps creux (5) adjacent à la base (3).
  11. Dispositif (1) selon la revendication 1, caractérisé en ce que le nombre et la position des trous (8) sont tels que, lorsque le dispositif (1) flotte dans l'eau, le dispositif (1) est rempli à travers les trous (8) avec une quantité de bain de lessive permettant de faire descendre le dispositif (1) sous le niveau du bain de lessive en moins de trois minutes.
  12. Procédé de lavage du linge dans le tambour d'une machine à laver dans laquelle un dispositif distributeur (1) réutilisable est rempli avec une composition de détergents ou une composition autre et est placé dans le tambour avec le linge, le dispositif (1) comprenant un corps creux (5) unitaire ayant une paroi (4) de corps autoporteur avec une paroi extérieure (4) lisse et un orifice (6) de remplissage et de distribution ouvert en permanence, caractérisé en ce que la paroi (4) du corps autoporteur est pourvue au moins d'un trou (8) non obstrué placé à l'opposé de l'orifice de remplissage, dont la taille et la forme empêchent la composition de s'échapper avant d'être en contact avec l'eau, l'eau entrant dans le corps creux (5) par ce trou pour faciliter la distribution de la composition.
  13. Procédé selon la revendication 12, dans lequel le tambour de la machine à laver est vertical, caractérisé en ce que l'eau pénètre dans le corps creux (5) et fait descendre le dispositif distributeur (1) en moins d'une minute.
EP91311313A 1990-12-07 1991-12-04 Dispositif diffuseur Expired - Lifetime EP0490577B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9026663 1990-12-07
GB909026663A GB9026663D0 (en) 1990-12-07 1990-12-07 Dispensing device

Publications (2)

Publication Number Publication Date
EP0490577A1 EP0490577A1 (fr) 1992-06-17
EP0490577B1 true EP0490577B1 (fr) 1996-03-06

Family

ID=10686662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91311313A Expired - Lifetime EP0490577B1 (fr) 1990-12-07 1991-12-04 Dispositif diffuseur

Country Status (9)

Country Link
EP (1) EP0490577B1 (fr)
JP (1) JPH0736876B2 (fr)
AU (1) AU8883291A (fr)
BR (1) BR9105286A (fr)
CA (1) CA2057170C (fr)
DE (1) DE69117693T2 (fr)
ES (1) ES2086500T3 (fr)
GB (1) GB9026663D0 (fr)
ZA (1) ZA919651B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0641881A1 (fr) * 1993-08-10 1995-03-08 The Procter & Gamble Company Dispositif diffuseur
FR2723752B1 (fr) * 1994-08-22 1997-05-16 Henkel France Recipient doseur et diffuseur de produits de lavage
DE4429774C1 (de) * 1994-08-22 1995-11-23 Henkel Kgaa Behältnis zur Aufnahme eines Wäschebehandlungsmittels
FR2723751B1 (fr) * 1994-08-22 1996-11-15 Henkel France Recipient doseur et diffuseur de produits de lavage
US6095380A (en) * 1998-10-27 2000-08-01 The Procter & Gamble Company Dosing device for a highly viscous liquid
US6574883B2 (en) * 2000-12-28 2003-06-10 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Dispensing for dryer
CN106702682A (zh) * 2016-11-30 2017-05-24 无锡小天鹅股份有限公司 洗衣球和具有洗衣球的洗衣机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400808A (en) * 1966-03-01 1968-09-10 Colgate Palmolive Co Combination dispensing and measuring vessel
JPS5147412A (ja) * 1974-10-22 1976-04-23 Tokyo Shibaura Electric Co Jikikirokusaiseisochi
JPS61119296A (ja) * 1984-11-14 1986-06-06 松下電器産業株式会社 一槽式遠心脱水洗濯機
DE3803645C1 (fr) * 1988-02-06 1989-08-17 Henkel Kgaa, 4000 Duesseldorf, De
DE8801837U1 (fr) * 1988-02-12 1989-06-15 Henkel Kgaa, 4000 Duesseldorf, De
FR2641551B2 (fr) * 1988-05-18 1991-11-22 Procter & Gamble Procede et dispositif pour le lavage du linge en machine avec un produit particulaire
GB8826403D0 (en) * 1988-11-11 1988-12-14 Unilever Plc Method & device for treating textile articles
DE3844368C1 (fr) * 1988-12-30 1990-04-12 Henkel Kgaa, 4000 Duesseldorf, De

Also Published As

Publication number Publication date
BR9105286A (pt) 1992-08-18
AU8883291A (en) 1992-06-11
DE69117693D1 (de) 1996-04-11
ES2086500T3 (es) 1996-07-01
ZA919651B (en) 1993-06-07
JPH0736876B2 (ja) 1995-04-26
DE69117693T2 (de) 1996-07-18
JPH04292198A (ja) 1992-10-16
CA2057170C (fr) 1998-06-23
EP0490577A1 (fr) 1992-06-17
GB9026663D0 (en) 1991-01-23
CA2057170A1 (fr) 1992-06-08

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