EP2511411B1 - Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge - Google Patents

Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge Download PDF

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Publication number
EP2511411B1
EP2511411B1 EP11425104.4A EP11425104A EP2511411B1 EP 2511411 B1 EP2511411 B1 EP 2511411B1 EP 11425104 A EP11425104 A EP 11425104A EP 2511411 B1 EP2511411 B1 EP 2511411B1
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EP
European Patent Office
Prior art keywords
laundry
speed
drum
stage
detergent
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.)
Active
Application number
EP11425104.4A
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German (de)
English (en)
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EP2511411A1 (fr
Inventor
Aldo Fumagalli
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.)
Candy SpA
Original Assignee
Candy 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 Candy SpA filed Critical Candy SpA
Priority to ES11425104T priority Critical patent/ES2791707T3/es
Priority to EP11425104.4A priority patent/EP2511411B1/fr
Priority to CN201210099971.7A priority patent/CN102733154B/zh
Priority to RU2012114796/12A priority patent/RU2585716C2/ru
Publication of EP2511411A1 publication Critical patent/EP2511411A1/fr
Application granted granted Critical
Publication of EP2511411B1 publication Critical patent/EP2511411B1/fr
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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
    • 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

Definitions

  • the present invention relates to a method for intensifying the activation of the detergent on the laundry in a washing machine or a washer-dryer, during the stage in which the detergent is introduced into the drum while the latter rotates in the washing tub of the machine at a speed V causing the laundry to be at least partially distributed within the drum, comprising the introduction into the tub of a specified quantity of liquid for dissolving the detergent and the recirculation of this quantity of washing liquid with detergent by drawing the liquid from the tub and subsequently introducing it so that it passes through the laundry contained therein, the recirculation taking place for a period T.
  • the operating cycle of a washing machine comprises an initial stage in which the detergent, of which a dose in powder, granular or liquid form has been loaded into a suitable compartment, is made to flow into the machine.
  • the total quantity of liquid present in the tub in the preliminary stage of the washing cycle is generally not more than 5 litres. Since the dose of detergent used is approximately 150 g for a conventional laundry load of 5 kg, the concentration of detergent in the liquid in this stage of the cycle is up to 30 g/litre.
  • the recirculation of the liquid with the detergent takes place for a sufficiently long period T, normally 10 or 12 minutes, with the drum rotating at a speed V, normally in the range from 75 to 120 revolutions per minute, known as the orbital speed, for the distribution of the laundry in the drum.
  • V normally in the range from 75 to 120 revolutions per minute, known as the orbital speed
  • the distribution of the detergent in the laundry is therefore completed at a concentration markedly lower than that present in the initial stage of introduction into the tub, resulting in a lower effectiveness of the detergent on any stains present on the fabric of the laundry.
  • the problem which the present invention is intended to resolve is that of ensuring that the effect of the detergent on the fabric to be washed is fully exploited in the first stage of the operating cycle of the machine, when the detergent is dissolved in the tub in a relatively limited quantity of water and is then recirculated while its concentration in the liquid is relatively higher than the concentration present in later washing stages in the machine.
  • the number 1 indicates the washing tub of a washing machine, indicated as a whole by 2.
  • a drum 3 for containing the laundry (not shown in the drawing) is positioned in the tub 1 in a conventional way.
  • the drum 3 is mounted in the machine in a conventional way so as to be rotatable at the different speeds and in the different directions which are characteristic of a washing machine, using suitable supports, a motor and a mechanical transmission (not shown).
  • the machine 1 is provided with a drawer 4 into which is loaded a dose of detergent, schematically indicated by 5, which can be conventionally produced in powder, tablet or liquid form.
  • the detergent drawer 4 is connected to a conduit 6 through which a preliminary quantity of liquid, generally water, is supplied to the drawer in order to make the detergent flow out through a conduit 7 from the drawer 4 to the tub 1 of the machine at the start of a washing cycle.
  • a preliminary quantity of liquid generally water
  • the tub 1 is also provided with a drainage conduit 8 which runs from the base of the tub to a liquid collection reservoir, indicated as a whole by 9, from which the liquid is recirculated by a first pump 10 into the tub 1 through a conduit 11 which feeds one or more conventional sprays 12.
  • These sprays 12 are preferably created by nozzles located around the conventional joint around which the drum 3 rotates, or in areas close to this joint. They are designed to direct the liquid spray 12 towards the centre of the load of laundry, and more particularly deeply into the centre of the annular configuration, which is known and is therefore omitted from the drawing, assumed by the items of laundry as a result of their orbital positioning in the drum 1.
  • the drum 3 is conventionally provided with walls having through holes, indicated schematically by 13, and ribs 14 for the movement and orbital distribution of the load of laundry during the rotation of the drum.
  • the dose of detergent is consequently made to flow out through the conduit 7 into the tub 1, where a further quantity of water is added by means of conventional water feed devices, in order to dissolve the detergent until a total of approximately 5 litres of liquid has been introduced, thus creating a detergent concentration of approximately 30 g per litre.
  • the line identified by H 2 O in the diagram in Figure 2 provides a qualitative indication of the quantity of water present in the tub 1 during the stage T.
  • This stage of the cycle causes the commencement of the wetting of the laundry in the drum 3 by the recirculation of the liquid and detergent by means of the pump 10 which draws the liquid from the tub 1 through the conduit 8 and subsequently introduces it through the conduit 11 and the sprays 12.
  • the drum 3 is rotated at the speed V, usually in the range from 75 to 120 revolutions per minute, in order to distribute the laundry in the drum 3 and separate the items of the laundry load from each other.
  • the combination of the rotation of the drum 3 and the recirculation provided by the pump 10 causes the liquid and detergent to be distributed over the laundry, which is initially dry but then starts to absorb the liquid, thus reducing the quantity of liquid available for recirculation.
  • the drum 3 containing the laundry load and rotating at the conventional speed V is subjected, for a period 5 in the range from 5 to 20 seconds, to at least one stage of rotation at a speed V1 equal to or greater than the speed V multiplied by a factor, which may or may not be an integer, in the range from 2 to 4, including the extreme values.
  • a stage in which the speed is returned to the initial level V.
  • the speed V1 imparted to the drum 3 for the period 5 can also reach or approach the speed imparted to the drum during the spin stage at the end of the washing cycle.
  • the stages in which the speed of the drum is brought to the level V1 can be close to each other in time, thus being paired, or separated.
  • the first stage can take place at a speed of V2 and the next stage at a speed V3, the speeds V2 and V3 being different from each other provided that they both meet the condition of being greater than the speed V multiplied by a factor in the range from 2 to 4.
  • the speed V3 of the later rotation stage in the pair of stages can be lower than the speed V2 of the preceding rotation stage.
  • the pulses of high speed imparted to the drum during the stage of dissolution of the detergent and recirculation of the liquid have the effect of squeezing the laundry, although for a limited time only, resulting in a partial recovery of liquid which is circulated by the recirculating pump 10, thus increasing the efficiency of the recirculation.
  • these pulses of high speed greater than the conventional speed for the orbital distribution of the laundry in the drum, create a mechanical force on the laundry load which tends to separate its constituent items from each other more completely, thus exposing a greater surface area of the fabric to the liquid and detergent circulated by the pump 10 and sprayed by the sprays 12 as far as possible into the load of laundry.
  • This causes the detergent to be more active on the laundry as soon as it has dissolved in the tub, when its concentration is higher than in the subsequent stages of the washing cycle. This is advantageous in terms of the overall efficiency of the machine, including the energy efficiency.

Landscapes

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

Claims (8)

  1. Procédé pour intensifier l'activation du détergent dans le linge dans un lave-linge ou une laveuse-sécheuse (2), pendant l'étape dans laquelle le détergent est introduit dans le tambour (3) tandis que ce dernier tourne dans la cuve de lavage (1) du lave-linge à une vitesse V à laquelle le linge est au moins partiellement distribué à l'intérieur du tambour (3), comprenant l'introduction dans la cuve (1) d'une quantité spécifiée de liquide pour dissoudre le détergent, et la recirculation de cette quantité de liquide de lavage contenant du détergent en la prélevant de la cuve (1) et par la suite en l'introduisant à travers le linge, la recirculation se déroulant dans une période T, caractérisé en ce que dans ladite période T la rotation du tambour (3) avec le linge comprend au moins une étape à une vitesse V1 ≥ KV pour une période t qui est inférieure à T, dans laquelle K est un facteur multiplicatif qui peut ou ne peut pas être un nombre entier, dans la plage allant de 2 à 4, incluant les valeurs extrêmes.
  2. Procédé selon la revendication 1, dans lequel la rotation du tambour avec le linge comprend une pluralité d'étapes pendant lesquelles la rotation se déroule à la vitesse V1.
  3. Procédé selon la revendication 1 et 2, caractérisé en ce que la pluralité d'étapes de rotation du tambour avec le linge comprend au moins une paire d'étapes dans lesquelles la vitesse V2 d'une étape de la paire est supérieure à la vitesse V3 de l'autre étape de la même paire, ces étapes se déroulant l'une après l'autre et les deux vitesses V2 et V3 étant supérieures ou égales à KV.
  4. Procédé selon la revendication 3, dans lequel l'étape de rotation à la vitesse V3, qui est inférieure à celle de l'autre étape de la paire se déroule après l'étape dans laquelle la vitesse de rotation est supérieure.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la vitesse de rotation V1 est comprise dans la plage allant de 300 révolutions par minute à la vitesse d'essorage du lave-linge.
  6. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel la durée t de l'étape de rotation du tambour avec le linge à la vitesse V1 et/ou V2 et/ou V3 est dans la plage comprise entre 5 et 20 secondes.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les paires d'étapes de rotation du tambour avec le linge à une vitesse V1 sont éloignées temporellement à intervalles dans la plage comprise entre 2 et 6 minutes.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'introduction du liquide de lavage avec le détergent dans l'étape de recirculation se déroule au moyen de pulvérisations (12) orientées vers le centre du linge présent dans le tambour (3) et profondément dans la configuration annulaire assumée par les articles dans le linge suite à leur positionnement orbital dans le tambour (3).
EP11425104.4A 2011-04-15 2011-04-15 Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge Active EP2511411B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES11425104T ES2791707T3 (es) 2011-04-15 2011-04-15 Método para intensificar la activación de un detergente en una lavadora o una lavadora-secadora
EP11425104.4A EP2511411B1 (fr) 2011-04-15 2011-04-15 Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge
CN201210099971.7A CN102733154B (zh) 2011-04-15 2012-04-06 用于增强洗衣机或清洗干燥机中的洗涤剂的活性化的方法
RU2012114796/12A RU2585716C2 (ru) 2011-04-15 2012-04-13 Способ усиления активизации моющего средства в стиральной машине или в стирально-сушильной машине

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11425104.4A EP2511411B1 (fr) 2011-04-15 2011-04-15 Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge

Publications (2)

Publication Number Publication Date
EP2511411A1 EP2511411A1 (fr) 2012-10-17
EP2511411B1 true EP2511411B1 (fr) 2020-05-06

Family

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Application Number Title Priority Date Filing Date
EP11425104.4A Active EP2511411B1 (fr) 2011-04-15 2011-04-15 Procédé pour intensifier l'activation d'un détergent dans un lave-linge ou un sèche-linge

Country Status (4)

Country Link
EP (1) EP2511411B1 (fr)
CN (1) CN102733154B (fr)
ES (1) ES2791707T3 (fr)
RU (1) RU2585716C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2902540B1 (fr) * 2014-01-30 2020-11-04 Candy S.p.A. Machine à laver le linge

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489574A (en) * 1981-11-10 1984-12-25 The Procter & Gamble Company Apparatus for highly efficient laundering of textiles
DE10234473A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum beschleunigten Benetzen von Wäsche in einer Trommelwaschmaschine
KR100519292B1 (ko) * 2002-11-26 2005-10-07 엘지전자 주식회사 세탁기의 포적심 알고리즘
KR20050072294A (ko) * 2004-01-06 2005-07-11 삼성전자주식회사 세탁기 및 그 제어방법
JP4111168B2 (ja) * 2004-05-18 2008-07-02 松下電器産業株式会社 ドラム式洗濯機
US7627920B2 (en) * 2006-06-09 2009-12-08 Whirlpool Corporation Method of operating a washing machine using steam
CN101451297B (zh) * 2008-11-28 2013-03-13 上海墒抢环境技术有限公司 符合洗衣粉使用方法的带循环通道的滚筒洗衣机
KR101619955B1 (ko) * 2009-01-09 2016-05-12 엘지전자 주식회사 세탁장치 및 이를 이용한 세탁방법
DE102009002782B4 (de) * 2009-05-04 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Spülen in einer Waschmaschine mit einem Spülschritt bei hoher Trommeldrehzahl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2791707T3 (es) 2020-11-05
CN102733154A (zh) 2012-10-17
RU2585716C2 (ru) 2016-06-10
RU2012114796A (ru) 2013-10-20
EP2511411A1 (fr) 2012-10-17
CN102733154B (zh) 2016-01-20

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