EP2723934B1 - Waschmaschine mit filtrationseinheit - Google Patents

Waschmaschine mit filtrationseinheit Download PDF

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Publication number
EP2723934B1
EP2723934B1 EP12729137.5A EP12729137A EP2723934B1 EP 2723934 B1 EP2723934 B1 EP 2723934B1 EP 12729137 A EP12729137 A EP 12729137A EP 2723934 B1 EP2723934 B1 EP 2723934B1
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EP
European Patent Office
Prior art keywords
water
reservoir
filtration unit
tub
line
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
EP12729137.5A
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English (en)
French (fr)
Other versions
EP2723934A1 (de
Inventor
Ilkan Erdem
Zehra Ulger
Emre Ozturk
Serife Birgul Tantekin ERSOLMAZ
William Bill KRANTZ
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 date
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL12729137T priority Critical patent/PL2723934T3/pl
Publication of EP2723934A1 publication Critical patent/EP2723934A1/de
Application granted granted Critical
Publication of EP2723934B1 publication Critical patent/EP2723934B1/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
    • 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

Definitions

  • the present invention relates to a washing machine comprising a filtration unit used for the water softening process (see US-A-20050252533 ).
  • Ca ++ and Mg ++ ions that increase the hardness of water are present in the water received from the water mains and used in the washing process.
  • the ions that increase water hardness join with the surfactants present in the detergent and decrease the cleaning properties of these agents thus the desired cleanliness of the laundry cannot be achieved.
  • the ions that increase water hardness furthermore cause lime accumulation on components like the heater by forming deposits in hot water.
  • water softening devices are used for decreasing the hardness of the washing water and for providing an effective washing.
  • the water softening device comprises an ion exchanger and a salt container that provides the regeneration process to be performed by keeping the resin in salty water at the ion exchanger in the regeneration process.
  • the conventional water softening devices provide an unpractical solution for the user since they need addition of salt periodically.
  • the salty and hard water having excessively corrosive effect is discharged to the outside due to the regeneration of the ion exchanger and rinsing thereof at the end of regeneration. This waste water formed in regeneration processes causes rusting in the metal components of the washing machine.
  • cross-flow filtration systems In the state of the art, utilization of cross-flow filtration systems is also known for decreasing the hardness of water.
  • water is passed tangentially over a membrane and water is separated into two as soft and hard water.
  • this type of filtration systems water has to be transferred under pressure on the membrane and capacity of producing soft water is low.
  • the aim of the present invention is the realization of a washing machine wherein water is softened by means of a cross-flow filtration unit and water saving is provided.
  • the washing machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a reservoir connected to the water inlet valve and open to atmospheric pressure, a filtration unit that provides the water to be softened by being filtered and a soft water line that transfers the soft water filtered in the filtration unit to the tub and a rinsing water line that delivers the hard water collected in the reservoir into the tub for use in the rinsing steps and a water outlet valve that is provided on this line.
  • the control unit opens the water outlet valve in the laundry rinsing steps executed after the main washing program with detergent and provides the hard water collected in the reservoir to be transferred to the tub.
  • the washing machine comprises the soft water line and the rinsing water line that transfer water to the tub from an inlet opening on the tub independently from the detergent dispenser.
  • Water is received into the detergent dispenser and the reservoir from two separate water inlet valves, after the detergents are flushed by receiving a small amount of water into the detergent dispenser, the water inlet valve connected to the detergent dispenser is closed and water is filled into the reservoir by opening the water inlet valve connected to the reservoir.
  • the water filled into the reservoir is transferred to the filtration unit for softening, here soft water and hard water are separated from each other and soft water and hard water are transferred to the tub without passing through the detergent dispenser.
  • Soft water is transferred to the tub from the inlet opening in the washing steps and hard water in the rinsing steps.
  • one end of the soft water line is connected to the filtration unit, the other end to the detergent dispenser and soft water is transferred to the tub through the detergent dispenser.
  • a soft water valve is disposed on the soft water line and pressurized soft water is transferred to the detergent dispenser.
  • the rinsing water line is connected to the detergent dispenser together with the soft water line and hard water is transferred to the tub through the detergent dispenser.
  • the existing detergent dispenser connection is used for transferring hard water to the tub and utilization of a separate line is not deemed necessary.
  • the hard water separated from the filtration unit in the water softening process is not discharged outside and by using in the laundry rinsing processes water saving is provided.
  • the washing machine (1) comprises a tub (2) wherein the washing process is performed, at least one water inlet valve (3, 103) that provides water intake into the tub (2) from the water mains (S) to be used in the washing program, a cross-flow type filtration unit (4), functioning as "water softening device", that separates ions like Ca ++ , Mg ++ by passing water through a nanofilter (NF) thus providing the removal of the hardness of water, a soft water line (5) that provides transferring of the water removed of hardness by being filtered in the filtration unit (4) to the tub (2), a detergent dispenser (6) wherein the cleaning agents such detergents, etc. are placed, a discharge pump (7) providing water to be discharged at the end of the washing program and a control unit (8) that regulates the water softening processes and the washing programs.
  • a cross-flow type filtration unit (4) functioning as "water softening device", that separates ions like Ca ++ , Mg ++ by passing water through a nanofilter (NF) thus providing
  • the washing machine (1) furthermore comprises a reservoir (9) connected to the first water inlet valve (3) and open to atmospheric pressure, a supply line (10) that provides continuous circulation of water between the reservoir (9) and the filtration unit (4), transferring water to the filtration unit (4), a return conduit (11) that provides the transfer of the hard water running down from the nanofilter (NF) (not passing through) by flowing together with the substances trapped on the surface of the nanofilter (NF) in the filtration unit (4) to the reservoir (9) and a circulation pump (12) disposed on the supply line (10), providing the circulation of the water between the reservoir (9) and the filtration unit (4) and the transfer of the water in the reservoir (9) under pressure to the filtration unit (4).
  • a circulation pump (12) disposed on the supply line (10), providing the circulation of the water between the reservoir (9) and the filtration unit (4) and the transfer of the water in the reservoir (9) under pressure to the filtration unit (4).
  • the washing machine (1) of the present invention comprises
  • the control unit (8) closes the water outlet valve (14) in the water softening process performed by circulating water between the filtration unit (4) and the reservoir (9) and in the main washing steps wherein detergent is used, thus preventing the hard water collected in the reservoir (9) from being transferred to the tub (2).
  • main washing with detergent soft water is used which is produced in the filtration unit (4) and transferred to the tub (2) from the soft water line (5).
  • the control unit (8) opens the water outlet valve (14) in the rinsing steps wherein detergent is not used and provides the hard water collected in the reservoir (9) to be transferred to the tub (2).
  • the water removed of its hardness is transferred to the tub (2) by means of the soft water line (5) in order to be used in the main washing processes.
  • the hard water leaving the filtration unit (4) is transferred to the reservoir (9) through the return conduit (11) and continues to be circulated between the filtration unit (4) and the reservoir (9) by means of the circulation pump (12).
  • the ratio of hard water/soft water leaving the filtration unit (4) is approximately 5/1 - 6/1, the circulation of water between the reservoir (9) and the filtration unit (4) continues and at the end of the water softening process, the ratio of hard water/soft water becomes 1/1 approximately. If for example 2 units of water is received from the first water inlet valve (3), 1 unit of soft water leaving the filtration unit (4) is transferred to the tub (2) and 1 unit of hard water is collected in the reservoir (9). The hard water collected in the reservoir (9) is not discharged, but transferred to the tub (2) by opening the water outlet valve (14) in the rinsing steps and the laundry is rinsed.
  • the washing machine (1) comprises an inlet opening (16) disposed on the tub (2) wherefrom the rinsing water line (13) is connected to the tub (2) ( Figure 1 , Figure 2 ).
  • the washing machine (1) comprises the soft water line (5), one end connected to the filtration unit (4), the other end connected to the inlet opening (16) by joining with the rinsing water line (13), thus transferring the soft water received from the filtration unit (4) to the tub (2) independently from the detergent dispenser (6) ( Figure 2 ).
  • the soft water line (5) and the rinsing water line (13) are joined on the inlet opening (16), in the main washing steps the soft water received from the soft water line (5) and in the rinsing steps the hard water received from the rinsing water line (13) is transferred to the tub (2).
  • the first water inlet valve (3) is connected to the reservoir (9), the second water inlet valve (103) to the detergent dispenser (6), at the start of the washing program, first the second water inlet valve (103) is opened by the control unit (8) to receive water into the detergent dispenser (6) sufficient enough for flushing the detergents, for example 3 - 5 liters and the cleaning agents in the detergent dispenser (6) are flushed with the small amount of water received from outside and transferred into the tub (2).
  • the second water inlet valve (103) is closed by the control unit (8), the first water inlet valve (3) is opened and water is received into the reservoir (9) for softening, the received water is softened in the filtration unit (4) and is transferred directly to the tub (2) by means of the soft water line (5) and the inlet opening (16), to be used in the main washing step.
  • the hard water collected in the reservoir (9) is transferred directly to the tub (2) by means of the rinsing water line (13) and the inlet opening (16).
  • one end of the soft water line (5) is connected to the filtration unit (4) and the other end to the detergent dispenser (6).
  • the washing machine (1) comprises a soft water pump (15), situated on the soft water line (5) between the filtration unit (4) and the detergent dispenser (6), which provides the soft water leaving the filtration unit (4) to be pressurized and transferred to the detergent dispenser (6).
  • the soft water pump (15) pressurizes the water flowing from the soft water line (5) to the detergent dispenser (6), thereby providing the cleaning agents in the detergent dispenser (6) to be effectively flushed ( Figure 4 ).
  • the washing machine (1) comprises the rinsing water line (13), whereof one end is connected to the reservoir (9) and the other end to the detergent dispenser (6).
  • the existing detergent dispenser (6) pathway is used for transferring hard water to the tub (2) and utilization of a separate pathway is not deemed necessary ( Figure 3 ).
  • the soft water leaving the filtration unit (4) having a cross-flow type nanofilter (NF) and functioning as water softening device, is used in the main washing steps with detergent, the hard water leaving the filtration unit (4) is utilized in the rinsing steps wherein detergent is not used. Receiving additional water from the water mains (S) is not necessary for the laundry rinsing activities and water saving is provided.
  • NF cross-flow type nanofilter

Landscapes

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

Claims (6)

  1. Waschmaschine (1), umfassend einen Waschbehälter (2), wenigstens ein Wassereinlassventil (3, 103), das eine Wasseraufnahme in den Waschbehälter (2) vom Wasserversorgungsnetz (S) ermöglicht, eine Querstromfiltereinheit (4), die Wasser durch einen Nanofilter (NF) leitet und dadurch für das Beseitigen der Wasserhärte sorgt, eine Weichwasserleitung (5), die dafür sorgt, dass das von seiner Härte befreite Wasser in der Filtereinheit (4) an den Waschbehälter (2) übertragen wird, einen Waschmitteldosierer (6), eine Steuereinheit (8), einen Behälter (9), der mit dem ersten Wassereinlassventil (3) verbunden und gegenüber dem Luftdruck offen ist, eine Zufuhrleitung (10), die für das Zirkulieren von Wasser zwischen dem Behälter (9) und der Filtereinheit (4) sorgt und Wasser aus dem Behälter (9) an die Filtereinheit (4) überträgt, eine Rückführleitung (11), die für die Übertragung des harten Wassers, das von dem Nanofilter (NF) herabläuft, indem es zusammen mit den Substanzen, die an der Oberfläche des Nanofilters (NF) in der Filtereinheit (4) aufgefangen werden, an den Behälter (9) sorgt, und eine Zirkulationspumpe (12), die an der Zufuhrleitung (10) angeordnet ist und für die Zirkulation des Wassers zwischen dem Behälter (9) und der Filtereinheit (4) sorgt,
    gekennzeichnet durch
    - eine Spülwasserleitung (13) zum Übertragen des harten Wassers von dem Behälter (9) an den Waschbehälter (2),
    - ein Wasserauslassventil (14), das an der Spülwasserleitung (13) angeordnet ist, und
    - dadurch, dass die Steuereinheit (8) das Wasserauslassventils (14) in den Wäschespülschritten öffnet und dafür sorgt, dass das im Behälter (9) aufgenommene harte Wasser an den Waschbehälter (2) übertragen wird.
  2. Waschmaschine (1) nach Anspruch 1, gekennzeichnet durch eine Einlassöffnung (16), die an dem Waschbehälter (2) angeordnet ist und von der die Spülwasserleitung (13) mit dem Waschbehälter (2) verbunden ist.
  3. Waschmaschine (1) nach Anspruch 2, dadurch gekennzeichnet, dass ein Ende der Weichwasserleitung (5) mit der Filtereinheit (4) verbunden ist und das andere Ende sich mit der Spülwasserleitung (13) verbindet.
  4. Waschmaschine (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
    - das erste Wassereinlassventil (3) mit dem Behälter (9) verbunden ist,
    - das zweite Wassereinlassventil (103) mit dem Waschmitteldosierer (6) verbunden ist, und
    - die Steuereinheit (8) dazu dient, bei Beginn des Waschprogramms das zweite Wassereinlassventil (103) als erstes zu öffnen und dafür zu sorgen, dass Wasser im Waschmitteldosierer (6) aufgenommen wird, und das erste Wassereinlassventil (3) als zweites zu öffnen und dafür zu sorgen, dass Wasser im Behälter (9) aufgenommen wird.
  5. Waschmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass eine Weichwasserpumpe (15) in der Weichwasserleitung (5) angeordnet ist und dafür sorgt, dass das weiche Wasser, dass die Filtereinheit (4) verlässt, unter Druck an den Waschmitteldosierer (6) übertragen wird.
  6. Waschmaschine (1) nach Anspruch 5, dadurch gekennzeichnet, dass ein Ende der Spülwasserleitung (13) mit dem Behälter (9) verbunden ist und das andere Ende mit dem Waschmitteldosierer (6) verbunden ist.
EP12729137.5A 2011-06-27 2012-06-22 Waschmaschine mit filtrationseinheit Active EP2723934B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12729137T PL2723934T3 (pl) 2011-06-27 2012-06-22 Pralka z jednostką filtrującą

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2011/06342A TR201106342A1 (tr) 2011-06-27 2011-06-27 Filtreleme ünitesi içeren bir çamaşır makinası.
PCT/EP2012/062156 WO2013000839A1 (en) 2011-06-27 2012-06-22 Washing machine with filtration unit

Publications (2)

Publication Number Publication Date
EP2723934A1 EP2723934A1 (de) 2014-04-30
EP2723934B1 true EP2723934B1 (de) 2015-11-25

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ID=46331330

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EP12729137.5A Active EP2723934B1 (de) 2011-06-27 2012-06-22 Waschmaschine mit filtrationseinheit

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EP (1) EP2723934B1 (de)
PL (1) PL2723934T3 (de)
TR (1) TR201106342A1 (de)
WO (1) WO2013000839A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR201719563T4 (tr) * 2013-05-08 2018-01-22 Arcelik As Filtreleme ünitesi içeren bir çamaşır makinası.
CN103526507B (zh) * 2013-10-16 2015-09-23 无锡艾科瑞思产品设计与研究有限公司 一种节水环保洗衣机
CN105063967B (zh) * 2015-08-11 2017-09-22 珠海格力电器股份有限公司 一种洗衣机进水口的排污装置及方法
CN111424407B (zh) * 2020-03-13 2021-04-09 珠海格力电器股份有限公司 一种用于洗衣机的供水系统及供水方法、洗衣机
CN116670351A (zh) 2021-03-22 2023-08-29 三星电子株式会社 包括过滤器的排水流动通道和具有排水流动通道的洗衣机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598467A1 (de) 2004-05-17 2005-11-23 The Procter & Gamble Company Verfahren und Vorrichtung zum Waschen
KR100857460B1 (ko) * 2006-03-21 2008-11-06 선남규 자동 재생이 가능한 연수 세탁기

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Publication number Publication date
TR201106342A1 (tr) 2013-01-21
EP2723934A1 (de) 2014-04-30
WO2013000839A1 (en) 2013-01-03
PL2723934T3 (pl) 2016-05-31

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