EP2981643B1 - Waschzyklus für waschmaschine mit verbesserter effizienz - Google Patents

Waschzyklus für waschmaschine mit verbesserter effizienz Download PDF

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Publication number
EP2981643B1
EP2981643B1 EP13716755.7A EP13716755A EP2981643B1 EP 2981643 B1 EP2981643 B1 EP 2981643B1 EP 13716755 A EP13716755 A EP 13716755A EP 2981643 B1 EP2981643 B1 EP 2981643B1
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EP
European Patent Office
Prior art keywords
water
rotary drum
rpm
washing machine
motor
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Application number
EP13716755.7A
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English (en)
French (fr)
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EP2981643A1 (de
Inventor
Cemal Murat Dora
Omer Dogan
Ilkan Erdem
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.)
Arcelik AS
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Arcelik AS
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Publication of EP2981643A1 publication Critical patent/EP2981643A1/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

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.
  • EP 2 110 474 A2 discloses a method for controlling drum rotation speed during water supply.
  • DE 102 34 473 A1 discloses a method comprising alternating drum rotation control.
  • 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.
  • 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.

Claims (1)

  1. Verfahren zum Betrieb einer Waschmaschine (1), wobei die genannte Waschmaschine (1) einen Trommel (3), in welche die Gewebematerialen eingelegt werden, eine Waschwanne (2), in welche die drehbare Trommnel (3) gedreht wird, einen Motor (7), der die drehbare Trommel (3) antreibt, eine Umwälzpumpe (4), die das Wasser, das in der Waschwanne (2) gespeichert ist, abzieht und mittels einer Sprühdüseleitung (9) das in der Umwälzleitung (5) unter Druck stehendes Wasser zu einer Sprühdüse (8) weiterleitet, umfasst, wobei die Sprühdüse (8) das Waschwasser in das innere Zentrum der Trommel (3) verspritzt, dadurch gekennzeichnet; dass
    das Verfahren den ersten Schritt umfasst, bei dem das Gewebe mit einer Wasserrückhaltemittel und Waschwasser imprägniert wird, wobei die drehbare Trommel (3) eine Spitzengeschwindigkeit von 100 rpm hat und anschließend die Geschwindigkeit der drehbaren Trommnel (3) gleich nach dem Erreichen der Spitzengeschwindigkeit verändert wird und wenn man die Umwälzpumpe (4) laufen läßt, jedes Paar der ersten und zweiten Spitzengeschwindigkeiten im Vorasussetzung, dass die drehbare Trommel (3) gedreht wird, in alternierenden Richtungen kontinuierlich wiederholend in einer noch wenigeren Spitzengeschwindigkeit im Bereich von etwa 50-55 rpm gedreht wird und
    wobei das Verfahren den zweiten Wasserfreigabeschritt umfasst, bei dem die Umwälzpumpe (4) gestoppt und der Motor (7) wahlweise in gegenübergesetzten Richtungen etwa mit etwa 50-55 rpm gedreht wird,
    wobei das Verfahren einen letzten Schritt umfasst, bei dem in nicht häufigen Zeitintervallen die Spitzengeschwindigkeiten von 100 rpm durchgeführt werden, deren Frequenzen gegenüber dem Hauptbogen von 40-45 rpm wesentlich kleiner werden, und bei dem eine kontinuierliche Geschwindigkeit des Motors (7) von 40-45 rpm wahlweise in gegenübergesetzten Richtungen durchgeführt wird.
EP13716755.7A 2013-04-04 2013-04-04 Waschzyklus für waschmaschine mit verbesserter effizienz Active EP2981643B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/057100 WO2014161579A1 (en) 2013-04-04 2013-04-04 Improved efficiency wash cycle for washing machine

Publications (2)

Publication Number Publication Date
EP2981643A1 EP2981643A1 (de) 2016-02-10
EP2981643B1 true EP2981643B1 (de) 2017-06-21

Family

ID=48128278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13716755.7A Active EP2981643B1 (de) 2013-04-04 2013-04-04 Waschzyklus für waschmaschine mit verbesserter effizienz

Country Status (3)

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EP (1) EP2981643B1 (de)
AU (1) AU2013385216B2 (de)
WO (1) WO2014161579A1 (de)

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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100689338B1 (ko) * 2001-01-16 2007-03-08 주식회사 엘지이아이 세탁기의 헹굼 방법
DE10234473A1 (de) * 2002-07-29 2004-02-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum beschleunigten Benetzen von Wäsche in einer Trommelwaschmaschine
DE102005012426A1 (de) 2005-03-17 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Benetzungsprozess für die Wäsche in einer programmgesteuerten Waschmaschine
KR101526966B1 (ko) * 2008-04-14 2015-06-11 엘지전자 주식회사 세탁기의 제어방법
JP2012205625A (ja) * 2011-03-29 2012-10-25 Panasonic Corp ドラム式洗濯機

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
EP2981643A1 (de) 2016-02-10
AU2013385216A1 (en) 2015-10-08
WO2014161579A1 (en) 2014-10-09
AU2013385216B2 (en) 2018-01-25

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