WO2014161579A1 - Cycle de lavage à efficacité améliorée pour machine à laver - Google Patents

Cycle de lavage à efficacité améliorée pour machine à laver Download PDF

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Publication number
WO2014161579A1
WO2014161579A1 PCT/EP2013/057100 EP2013057100W WO2014161579A1 WO 2014161579 A1 WO2014161579 A1 WO 2014161579A1 EP 2013057100 W EP2013057100 W EP 2013057100W WO 2014161579 A1 WO2014161579 A1 WO 2014161579A1
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WO
WIPO (PCT)
Prior art keywords
rotary drum
water
rpm
washing machine
motor
Prior art date
Application number
PCT/EP2013/057100
Other languages
English (en)
Inventor
Cemal Murat Dora
Omer Dogan
Ilkan Erdem
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to AU2013385216A priority Critical patent/AU2013385216B2/en
Priority to EP13716755.7A priority patent/EP2981643B1/fr
Priority to PCT/EP2013/057100 priority patent/WO2014161579A1/fr
Publication of WO2014161579A1 publication Critical patent/WO2014161579A1/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 operating a washing machine having an improved washing performance.
  • Washing machines are generally classified as a top loading type washing machine or a front loading type washing machine. It is well-known that a front loading type washing machine contains a tub in a cabinet for receiving washing water and a drum rotatably mounted in the tub. Typically, wash water is received in the tub, and cloth items to be washed are placed in the drum. Cloth items are then lifted and dropped by lifters while the drum is rotated so that washing and rinsing process is carried out.
  • the washing machine of the above type further incorporates a pump unit for circulating washing water in the lower part of the tub, said pump unit conveying washing water to an upper part of the tub such that a more effcient washing angle can be obtained by means of a nozzle whereby water jets from the upper part of the tub are delivered.
  • US2008189875 a prior art publication in the technical field of the invention may be referred to as US2008189875, which attempts at improving washing performance by configuration of individual phases of the wetting process so as to adjust the same in respect of the quantity and specific absorbency of the laundry.
  • the method of the present invention provides homogenous mixing and adequate impregnation of every part of cloth items with discontinuous peaks.
  • the wash water extracted from the laundry during a first rotational profile of the drum is recirculated toward the inner central region of the drum for impregnating the laundry amassed in the inner central region during a second rotational profile.
  • an enhanced mechanical effect is obtained by increasing contacting potentiality of each cloth item with other ones due to a continuous speed rate regime.
  • Speed rate is determined such that the laundry is kept centrally while at the same time causing relative movement of cloth items in contact with each other. Further, instantaneous scattering of the laundry is also ensured on an occasional basis.
  • the present invention provides a method for operating a washing machine to obtain an improved washing or rinsing efficiency, which is provided by the characterizing features as defined in Claim 1.
  • Primary object of the present invention is to provide a method for operating a washing machine with improved washing or rinsing efficiency.
  • the present invention proposes a front loading washing machine with a drum in which cloth items are placeable and a water tub in which the rotary drum is rotatable.
  • a motor conventionally provides that the drum is driven by means of a pulley mechanism disposed outside the tub.
  • a circulation pump is provided in a circulation pipe, which draws wash water stored in the water tub. Pressured water is supplied to a spray nozzle through a nozzle water conduit. In this way, the spray nozzle produce water jets targeting cloth items in the drum.
  • the spray nozzle jets wash water from a front door side above the rotary drum toward the inner region of the same.
  • the method of the invention is performed such that the rotary drum is rotated at a first peak speed followed by a lower peak speed. Peak speeds are not maintained and as such they are temporary values. Each pair of the first and second peaks is repeated in alternating directions and the circulation pump is operated alongside.
  • a second step of water releasing is then performed in which the circulation pump is not operated and the motor is rotated at a speed of about 50-55 rpm in opposite directions in an alternating manner.
  • the final step features a continuous speed rate of about 40-45 rpm in opposite direction in an alternating manner with infrequent peaks of 100 rpm in between.
  • Fig. 1 demonstrates a side cut-away view of a washing machine according to the present invention.
  • Fig. 2 demonstrates the drum’s rotation curve performed according to the first step of the wash cycle of the present invention.
  • Fig. 3 demonstrates the drum’s rotation curve performed according to the third step of the wash cycle of the present invention.
  • the present invention proposes a washing machine designated generally by the numeral 1.
  • the present invention relates to a washing machine (1) comprising a rotary drum (3) rotated around the horizontal axis and wherein the laundry is placed.
  • a water tub (2) in which said rotary drum (3) rotates is provided such that a motor (7) drives a rotary drum (3) by means of a pulley mechanism (10) disposed outside said water tub (2).
  • the latter transmits rotational movement of the motor (7) to the rotary drum (3).
  • the washing machine (1) conventionally comprises a discharge pump that discharges the wash water as stipulated by the washing process; a discharge conduit conveys the wash water accordingly.
  • a circulation pump (4) placed in a circulation pipe (5) draws wash water stored in the water tub (2) and pressurizes the wash water flowing in a nozzle water conduit (9) for conveying it into the rotary drum (3).
  • This mechanism allows the wash water stored in the water tub (2) to run through the nozzle water conduit (9) and to circulate to the rotary drum (3).
  • a motor is drivingly coupled to the circulation pump (4) which delivers pressured water to a spray nozzle (8) via the nozzle water conduit (9).
  • a conventional drum-type washing machine jets the wash water from a front door (6) side toward the inner part of the rotary drum (3) through the spray nozzle (8) placed above the rotary drum (3) at the front door (6) side.
  • the wash cycle of the present invention comprises the steps of water retention and impregnating laundry with wash water, water release and main wash cycles.
  • wash water is received in the rotary drum (3), this phase typically taking about five minutes.
  • the rotary drum (3) is rotated at a speed of about 100 rpm followed by lower peaks of about 50-55 rpm.
  • the speed characteristic of the motor (7) in this water retention and impregnation step requires that a first peak of about 100 rpm is followed by a second lower peak of about 50-55 rpm.
  • the motor (7) is operated such that its speed is changed and decreased immediately after the peak values are reached. In other words, it is not operated continuously at peak speeds.
  • the first peaks in this regime serves to the purpose of fixating the laundry to the rotary drum’s (3) lateral walls.
  • the second lower peaks will help homogenous mixing of the laundry as cloth items will disengage from the rotary drum’s (3) wall surfaces at these speeds. Homogenous mixing is important as it enables impregnation of every part of cloth items with the wash water.
  • the wash water discharged by the discharge pump is recirculated into the rotary drum (3) by the circulation pump (4) through the spray nozzle (8).
  • This provides that the wash water containing detergents extracted from the laundry during operation of the motor (7) around the first peaks is recirculated toward the inner central region of the rotary drum (3), hence impregnating the laundry that is made disengaged from the rotary drum (3) walls during speeds around the second lower peaks.
  • the motor of the circulation pump (4) is continuously operated as long as the motor’s (7) shaft rotates the rotary drum (3).
  • the motor (7) is operated such that each pair of the first and second peaks is repeated in alternating directions.
  • the first step is very effective in ensuring that a homogenous mixing as well as an improved water consumption performance is obtained.
  • water releasing step is performed such that the circulation pump (4) is stopped and the motor (7) is rotated at around 50-55 rpm in opposite directions in an alternating manner.
  • a certain amount of the wash water is taken out of the rotary drum (3) by the discharge pump.
  • the final step of the wash cycle according to the present invention is the main wash cycle.
  • the main purpose of this step is to enhance mechanical effect by increasing contacting potentiality of each cloth item with other cloth items as much as possible. This is accomplished by a motor (7) speed of 40-45 rpm, which is slightly lower than the lower peak value of the first step. Since the laundry is already homogenously mixed and adequately wet at this final stage, a regime with continuous speed rate, i.e. having no discrete peak values is adopted. Continuous speed rate regime is advantageous in that the laundry is more and more amassed in the inner central region of the rotary drum (3) rather than being adhered to lateral walls, accordingly enhancing mechanical contact among cloth items.
  • the speed is even lower than the second lower peak value in the first step of the wash cycle because it is considered as an optimal speed value for keeping the laundry centrally while at the same time causing relative movement of cloth items in contact with each other.
  • the present invention proposes a washing machine (1) comprising a rotary drum (3) in which cloth items are placeable, a water tub (2) in which the rotary drum (3) is rotatable, a motor (7) providing the rotary drum (3) to be driven by means of a pulley mechanism (10), the latter disposed outside the tub (2).
  • a circulation pump (4) in a circulation pipe (5) draws wash water stored in the water tub (2) and delivers pressured water to a spray nozzle (8) via a nozzle water conduit (9), the spray nozzle (8) jetting the wash water from a front door (6) side above the rotary drum (3) toward the inner part of the same.
  • the present invention provides that the laundry is first adhered to the rotary drum’s (3) lateral walls and then amassed in the inner central region thereof. This movement provides homogenous mixing and adequate impregnation of every part of cloth items with the wash water.
  • the first step comprises a first and a second motor speed values in the form of discontinuous peaks.
  • the wash water containing detergents extracted from the laundry during the first peaks is recirculated toward the inner central region of the rotary drum (3) for impregnating the laundry amassed in the inner central region during the second lower peaks.
  • the third step which is the main wash cycle, an enhanced mechanical effect is obtained by increasing contacting potentiality of each cloth item with other ones due to a continuous speed rate regime.
  • Speed rate is determined such that the laundry is kept centrally while at the same time causing relative movement of cloth items in contact with each other. Further, instantaneous scattering of the laundry is also ensured on an occasional basis.

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

Abstract

La présente invention concerne une machine à laver (1) comprenant un tambour rotatif (3) dans lequel peuvent être placés des tissus, une cuve à eau (2) dans lequel peut tourner le tambour rotatif (3), un moteur (7) qui réalise l'entraînement du tambour rotatif (3) à l'aide d'un mécanisme à poulie (10), ce dernier étant disposé à l'extérieur de la cuve (2), une pompe de circulation (4) dans un tuyau de circulation (5) qui soutire l'eau de lavage stockée dans la cuve à eau (2) et qui délivre de l'eau pressurisée à une buse de pulvérisation (8) par le biais d'une conduite à eau de buse (9), la buse de pulvérisation (8) projetant l'eau de lavage depuis un côté de porte avant (6) au-dessus du tambour rotatif (3) en direction de la partie intérieure de celui-ci.
PCT/EP2013/057100 2013-04-04 2013-04-04 Cycle de lavage à efficacité améliorée pour machine à laver WO2014161579A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2013385216A AU2013385216B2 (en) 2013-04-04 2013-04-04 Improved efficiency wash cycle for washing machine
EP13716755.7A EP2981643B1 (fr) 2013-04-04 2013-04-04 Cycle de lavage à efficacité améliorée pour machine à laver
PCT/EP2013/057100 WO2014161579A1 (fr) 2013-04-04 2013-04-04 Cycle de lavage à efficacité améliorée pour machine à laver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/057100 WO2014161579A1 (fr) 2013-04-04 2013-04-04 Cycle de lavage à efficacité améliorée pour machine à laver

Publications (1)

Publication Number Publication Date
WO2014161579A1 true WO2014161579A1 (fr) 2014-10-09

Family

ID=48128278

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/057100 WO2014161579A1 (fr) 2013-04-04 2013-04-04 Cycle de lavage à efficacité améliorée pour machine à laver

Country Status (3)

Country Link
EP (1) EP2981643B1 (fr)
AU (1) AU2013385216B2 (fr)
WO (1) WO2014161579A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109820462B (zh) * 2019-03-28 2021-06-11 佛山市百斯特电器科技有限公司 一种控制电机的方法及洗碗机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002057530A1 (fr) * 2001-01-16 2002-07-25 Lg Electronics Inc. Procede de commande de rinçage pour lave-linge
DE10234473A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum beschleunigten Benetzen von Wäsche in einer Trommelwaschmaschine
US20080189875A1 (en) 2005-03-17 2008-08-14 Bsh Bosch Und Siemens Hausgerate Gmbh Wetting Process for the Laundry Inside a Program-Controlled Washing Machine
EP2110474A2 (fr) * 2008-04-14 2009-10-21 LG Electronics Inc. Procédé de commande de machine à laver
WO2012132272A1 (fr) * 2011-03-29 2012-10-04 パナソニック株式会社 Machine à laver à tambour

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002057530A1 (fr) * 2001-01-16 2002-07-25 Lg Electronics Inc. Procede de commande de rinçage pour lave-linge
DE10234473A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum beschleunigten Benetzen von Wäsche in einer Trommelwaschmaschine
US20080189875A1 (en) 2005-03-17 2008-08-14 Bsh Bosch Und Siemens Hausgerate Gmbh Wetting Process for the Laundry Inside a Program-Controlled Washing Machine
EP2110474A2 (fr) * 2008-04-14 2009-10-21 LG Electronics Inc. Procédé de commande de machine à laver
WO2012132272A1 (fr) * 2011-03-29 2012-10-04 パナソニック株式会社 Machine à laver à tambour

Also Published As

Publication number Publication date
AU2013385216B2 (en) 2018-01-25
EP2981643B1 (fr) 2017-06-21
AU2013385216A1 (en) 2015-10-08
EP2981643A1 (fr) 2016-02-10

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