EP2462272B1 - Wasserführendes hausgerät mit einer filtereinrichtung im abpumpstrang und speicher - Google Patents

Wasserführendes hausgerät mit einer filtereinrichtung im abpumpstrang und speicher Download PDF

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Publication number
EP2462272B1
EP2462272B1 EP10736724.5A EP10736724A EP2462272B1 EP 2462272 B1 EP2462272 B1 EP 2462272B1 EP 10736724 A EP10736724 A EP 10736724A EP 2462272 B1 EP2462272 B1 EP 2462272B1
Authority
EP
European Patent Office
Prior art keywords
water
filter
filter device
pumping
water reservoir
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
EP10736724.5A
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German (de)
English (en)
French (fr)
Other versions
EP2462272A1 (de
Inventor
Hans Eglmeier
Hartmut Schaub
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL10736724T priority Critical patent/PL2462272T3/pl
Publication of EP2462272A1 publication Critical patent/EP2462272A1/de
Application granted granted Critical
Publication of EP2462272B1 publication Critical patent/EP2462272B1/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 
    • D06F39/10—Filtering arrangements
    • 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 
    • D06F39/20—Arrangements for water recovery

Definitions

  • the invention relates to a water-conducting domestic appliance, in particular a laundry treatment appliance for washing and / or drying laundry. Specifically, the invention relates to the field of washing machines and washer-dryers.
  • a circulation pump is provided, which promotes via a filter element with high capacity wastewater in an intermediate container. From the intermediate container, the waste water can be pumped back or pumped back into a laundry drum or the like. Furthermore, an additional filter device is provided, from which water can be filtered from the intermediate container. The device is independent of a domestic appliance, but can be used to treat waste water from a domestic appliance.
  • the from the U.S. Patent 5,868,937 known device and the method known from it have the disadvantage that the cost of filtering is relatively large. In addition, there is a certain maintenance, since the filter elements must be replaced after a certain time.
  • the DE 197 09 085 A1 discloses a method for washing laundry in which the washing water is collected in an intermediate container, filtered and collected in a storage. Since a cross-flow filter is used as the filter, several cycles are required. In addition, the filter device is arranged parallel to the pumping line, which requires two storage containers. Such a construction is technically complex and requires a lot of space, which generally lacks in a washing machine.
  • An object of the invention is to provide a water-conducting household appliance, in which a possible water storage is improved.
  • a water-conducting domestic appliance in particular a laundry treatment appliance for washing and / or drying laundry, in which a treatment area, a pumping line connected to the treatment area, a drain pump arranged in the pumping line, a water reservoir and a filter device are provided, wherein stored in the water storage water is feasible in the treatment area, wherein the filter device between the treatment area and the drain pump is arranged in the Abpumpstrang, wherein the filter means is connected to the water reservoir to divert water from the arranged in the Abpumpstrang filter device in the water reservoir, wherein the filter device comprises a filter which filters the wastewater diverted into the water reservoir and wherein the water reservoir is connected to the filter device via a bidirectional pump.
  • the filter device is arranged between the treatment area and the drain pump in the pumping line. In this case, it is also advantageous that the filter device is arranged on a suction side of the drain pump. As a result, an advantageous mode of operation of the water-conducting domestic appliance for storing filtered water in the water storage is made possible.
  • the water reservoir is used to store a certain amount of water, which is branched off from the arranged in the Abpumpstrang filter device into the water reservoir.
  • the water is filtered in an advantageous manner by the filter device, so that filtered water can be obtained from the wastewater discharged via the pumping line.
  • the filter device can filter the water more or less.
  • the extent of filtering depends on the expected contamination of the wastewater used for filtering and the intended use for the stored water.
  • the water-bearing domestic appliance can be configured such that the water branched off into the water reservoir is diverted during a wash cycle, preferably the last wash cycle. The pollution of the waste water of the last wash cycle is in the Usually relatively low.
  • the stored water can be used for a Vorrvaschgang, which is followed by a main wash cycle.
  • the requirements for the filter device also depend on the expected service life of the water in the water reservoir.
  • the filter device can also be used for filtering bacteria and the like.
  • the filter device can be adapted to the particular application.
  • the filter device has a filter chamber and a filter arranged in the filter chamber, that the filter filters the waste water diverted into the water reservoir, wherein residues accumulate in the filter, and that passed through the Abpumpstrang to an outlet wastewater through the filter device is guided, that a entrainment of residues collected in the filter is made possible by the wastewater.
  • the water branched off into the water reservoir can thereby be guided in an advantageous manner through the filter of the filter device.
  • the desired purity of the water stored in the water reservoir can be achieved.
  • the filter becomes clogged with residues over time.
  • these residues are taken along by the wastewater, which is passed through the pumping line to the outlet.
  • the waste water passes through the filter chamber, whereby it flows past the filter, that a cleaning effect is achieved with respect to the filter.
  • a maintenance-free design of the filter device or at least a longer service life of the filter can be achieved.
  • a user-friendly design of the water-bearing household appliance is possible, whereby the water consumption can be reduced by the stored water.
  • the filter is configured as a hollow-fiber membrane filter, that the filter device has a flange, that the water reservoir is at least indirectly connected to the flange and that the two ends of the hollow fibers of the hollow fiber membrane filter are connected to the flange.
  • a high surface in relation to the required volume can be used for filtering.
  • a bundle with 100 to 1000 fibers bent in a U-shape and the front side can be taken in the flange.
  • the wastewater to be filtered is led into the filter room and driven by a pressure difference between the filter chamber and the flange through the pores in the fiber cladding.
  • the thereby deposited substances form residues that accumulate on the outside of the surface of the shell of the individual hollow fibers, while the purified water is passed through the cavity of the hollow fibers via the flange to the water reservoir. Due to the very large surface area of the hollow-fiber membrane filter, even at a relatively low pressure, for example at a pressure difference of 50 kPa (0.5 bar), filtration and thus filling of the water reservoir can take place.
  • the required pressure difference also depends on the desired cleaning effect.
  • the hollow-fiber membrane filter comprises a multiplicity of hollow fibers which are arranged in the filter chamber such that the stream of wastewater guided through the pumping-down strand to the outlet mechanically moves the hollow fibers towards one another.
  • the hollow fibers of the hollow-fiber membrane filter are arranged in the filter chamber such that they rub against one another during the mechanical movement caused by the flow of the wastewater.
  • the water reservoir is connected via a pump to the filter device.
  • the pump can advantageously as a against the Be configured ambient pressure working suction pump, since the pressure to be applied when using a hollow fiber membrane filter is relatively low.
  • a controller is provided and that the controller for draining water from the arranged in the Abpumpstrang filter device in the water storage shuts off the drain pump and the pump, via which the water storage is connected to the filter device, turns on.
  • the pump via which the water reservoir is connected to the filter device, is designed as a bidirectional pump. It is advantageous that the control switches off the drain pump in a filter cleaning mode and activates the pump, via which the water reservoir is connected to the filter device, in the opposite direction in order to assist filter cleaning of the filter of the filter device by backwashing water from the water reservoir into the filter chamber of the filter device.
  • the cleaning effect by backwashing during pumping can be further supported.
  • a cleaning program can thus be integrated into a normal washing process.
  • the filter cleaning can be carried out, for example, after a certain number of program runs.
  • the system of water storage, filter device and pumps is designed to be compact and robust and can be accommodated, for example, additionally in the bottom area of a designed as a front load water-bearing household appliance together with other, optionally required auxiliary components.
  • the inventive water-bearing domestic appliance and its advantageous developments also define advantageous process steps for controlling the water-bearing household appliance.
  • Fig. 1 shows functional components and assemblies of a water-bearing household appliance 1 in a schematic representation.
  • the water-bearing domestic appliance 1 can in particular be configured as a laundry treatment appliance and serve for washing and / or drying laundry.
  • the water-bearing domestic appliance 1 can be configured as a washing machine or washer-dryer.
  • the features of the water-conducting household appliance 1 specifically explained here are also suitable for other applications, in particular, the domestic appliance can be designed as a dishwasher.
  • the water-bearing domestic appliance 1 has a container 2, which is designed in this embodiment as a tub.
  • the container 2 encloses a treatment area 3 of the water-conducting household appliance 1.
  • the water-bearing domestic appliance 1 has a connection 4, on which the water-bearing domestic appliance 1 can be connected to a fresh water line.
  • a line 5, in which a check valve 6 is arranged leads to an induction bowl 7.
  • a treatment agent in particular a laundry treatment agent, can be provided.
  • the fresh water passes through a free air gap in the dispenser 7 and rinses the laundry treatment agent, in particular a detergent or a softener, from the dispenser 7 via a connecting channel 8 in the container 2.
  • the laundry treatment agent in particular a detergent or a softener
  • the wastewater can be pumped out of the treatment area 3 via a pumping line 9 by means of a drain pump 10 arranged in the pumping line 9.
  • a connection 11 is provided, with which the pumping line 9 of the water-conducting household appliance 1 can be connected to a sewage pipe.
  • fresh water can be fed several times via the line.
  • one or more rinses may be provided to rinse the laundry provided in the treatment area 3.
  • At least part of the rinsing water can be temporarily stored in a water storage 12 of the water-bearing household appliance 1.
  • the water reservoir 12 is connected via a line 13 to the connecting channel 8.
  • a pump 14 is arranged.
  • the water stored in the water storage 12 may replace a part of the supplied fresh water in another application. This can save water.
  • a portion of the supplied via the line 5 fresh water can be replaced by the water stored in the water tank 12.
  • the water storage 12 may for example have a storage volume of 12 liters.
  • a filter device 20 is arranged in the Abpumpstrang 9 .
  • the filter device 20 has a filter chamber 21 and a filter 22 arranged in the filter chamber 21.
  • the filter device 20 between the container 2, which surrounds the treatment area 3, and the drain pump 10 is arranged in the Abpumpstrang 9.
  • the filter device 20 may be arranged on a suction side 23 of the drain pump 10.
  • the water-bearing domestic appliance 1 of this embodiment has a controller 24.
  • a pump 25 is provided, via which the filter device 20 is connected to the water reservoir 12.
  • the pump 25 is arranged in a line 26 which is connected on the one hand with a flange 27 of the filter device 20 and on the other hand with the water reservoir 12.
  • the controller 24 is connected via a control line 28 to the drain pump 10, via a control line 29 to the pump 25 and via a control line 30 to the pump 14.
  • the controller 24 operates the drain pump 10.
  • the controller 24 switches off the drain pump 10 and actuates the pump 25. This is preferably done after a rinse.
  • the controller 24 is located in the filter chamber 21 relatively clean water, which is filtered when operating the pump 25 via the filter 22.
  • the filtered water through the filter 22 can be cached in the water storage 12 for later use.
  • the controller 24 shuts off the pump 25.
  • the remaining residual water can then be completely pumped out of the container 2 by actuating the drain pump 10.
  • the controller 24 operates the pump 14th
  • the filter 22 of the filter device 20 is designed as a hollow fiber membrane filter.
  • the filter 22 a plurality of hollow fibers 31, wherein in the Fig. 1 For simplicity of illustration only the hollow fiber 31 is indicated. In this case, for example, about 100 to 1000 such hollow fibers 31 may be provided.
  • Each of the hollow fibers 31 is bent in a U-shape, wherein both an end 32 of the hollow fiber 31 and an end 33 of the hollow fiber 31 are gripped in the end face of the flange 27. Over the lateral surface of the hollow fiber 31, the water passes from the filter chamber 21 into the interior of the hollow fiber 31. From the interior of the hollow fiber 31, the filtered water is conveyed through the pump 25 into the water reservoir 12.
  • the pump 25 may be designed as a suction pump, which applies a pressure of about 50 kPa (0.5 bar) against the ambient pressure.
  • the design and arrangement of the filter device 20 enables a cleaning of the filter 22 and thus prevents a progressive clogging of the filter 22.
  • a cleaning of the filter 22, which consists of the plurality of hollow fibers 31, be realized by relatively low mechanical energy input. Due to the arrangement of the filter device 20 in the pumping line 9, in particular at the given by the suction side 23 inlet of the drain pump 10, the pumped out of the container 2 via the drain pump 10 to the port 11 wastewater flows around the outside (surface) of Hohtmaschinen 31. Thus Residues that have accumulated on the outside of the hollow fibers 31, while washing off the waste water constantly washed off. The washing of the hollow fibers 31 of the filter 22 takes place on the one hand by the mechanical movement of the stream of wastewater (wastewater stream).
  • the wastewater enriched with the residues of the filter 22 reaches the connection 11 from the water-conducting domestic appliance 1.
  • the individual hollow fibers 31 are arranged in the filter space 21 so that they rub against each other. Through this mechanical friction, a further cleaning effect is generated, which is used to remove the when filtering left behind residues on the outside of the hollow fibers 31 leads.
  • the filling of the water reservoir 12 takes place relatively late within a washing program, for example during the last rinse cycle.
  • the filter chamber 21 to the port 11 through-flowing wastewater is gradually cleaner. This corresponds to the normal course of the washing program, which may consist of pre-washing, main washing and one or more rinses.
  • the degree of purification of the filter 22 also gradually improves.
  • the filter 22 is at least largely cleaned during the last rinse.
  • the standing in the filter chamber 21 wastewater is here deducted from the pump 25 on the flange 27 of the hollow fiber membrane filter 22.
  • the configuration of the hollow fibers 31 of the filter 22 is predetermined with respect to the respective application. Specifically, a pore width of the hollow fiber membranes may be selected from a relatively wide range. Specifically, hollow fibers 31 having pores having a pore width of about 6 nm may be selected. By such a pore size and bacteria or the like can be filtered off.
  • the filter chamber 21 may be configured as a filter chamber. The filter chamber 21 may in this case also be formed by a chamber on the suction side 23 of the drain pump 10, which is formed within the housing of the drain pump 10.
  • the water-bearing domestic appliance 1 may also include a filter cleaning mode.
  • the pump 25 is designed as a bidirectional pump 25 so that it can pump water from the water reservoir 12 in the filter chamber 21 of the filter device 20 in the opposite direction.
  • the controller 24 controls the pump 25 in the opposite direction, while the drain pump 10 for pumping waste water through the Abpumpstrang 9 to the port (output) 11 runs.
  • the cleaning of the filter 22 from the residues is in this case supported by the backwashing of water from the water reservoir 12 into the filter chamber 21.
  • improved cleaning of the hollow fibers 31 of the filter 22 can occur.
  • the cleaning mode may be automatically executed by the controller 24 after a certain period of operation or after a certain number of program runs.
  • the controller 24 may operate the pump 25 to fill the water reservoir 12 even during the pump down, in which the drain pump 10 is running.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP10736724.5A 2009-08-07 2010-07-27 Wasserführendes hausgerät mit einer filtereinrichtung im abpumpstrang und speicher Active EP2462272B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10736724T PL2462272T3 (pl) 2009-08-07 2010-07-27 Prowadzące wodę urządzenie domowe z zespołem filtracyjnym w toku wypompowywania i zasobnikiem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028357.9A DE102009028357B4 (de) 2009-08-07 2009-08-07 Wasserführendes Hausgerät mit einem Abpumpstrang
PCT/EP2010/060833 WO2011015487A1 (de) 2009-08-07 2010-07-27 Wasserführendes hausgerät mit einer filtereinrichtung im abpumpstrang und speicher

Publications (2)

Publication Number Publication Date
EP2462272A1 EP2462272A1 (de) 2012-06-13
EP2462272B1 true EP2462272B1 (de) 2014-04-02

Family

ID=42937292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10736724.5A Active EP2462272B1 (de) 2009-08-07 2010-07-27 Wasserführendes hausgerät mit einer filtereinrichtung im abpumpstrang und speicher

Country Status (6)

Country Link
EP (1) EP2462272B1 (zh)
CN (1) CN102471981B (zh)
DE (1) DE102009028357B4 (zh)
EA (1) EA019780B1 (zh)
PL (1) PL2462272T3 (zh)
WO (1) WO2011015487A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8157923B1 (en) 2010-11-08 2012-04-17 Whirlpool Corporation Method of reusing wash and rinse liquid in a dishwasher
DE102011083208B4 (de) * 2011-09-22 2016-05-04 BSH Hausgeräte GmbH Geschirrspülmaschine mit einem Flottenspeicher und Verfahren zum Betrieb derselben
DE102012207980A1 (de) 2012-05-14 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Zwischenspeichern von Betriebsflüssigkeit
DE102013223917A1 (de) 2012-12-20 2014-06-26 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsmaschine mit einem Laugenbehälter und einem Wärmespeicher
CN103556435B (zh) * 2013-11-07 2015-07-15 乐金电子研发中心(上海)有限公司 实现水循环利用的洗衣机和洗衣方法
CN104805652B (zh) * 2014-01-24 2017-01-18 海尔集团技术研发中心 洗衣机
CN104805650B (zh) * 2014-01-24 2017-01-18 海尔集团技术研发中心 洗衣机
DE102014214351A1 (de) * 2014-07-23 2016-01-28 BSH Hausgeräte GmbH Haushaltsgerät mit einem Umpumpsystem
WO2016085431A1 (en) * 2014-11-28 2016-06-02 Arcelik Anonim Sirketi A laundry dryer
DE102016212481A1 (de) * 2016-07-08 2018-01-11 BSH Hausgeräte GmbH Haushaltsgerät mit einem Pumpenfilter
DE102019205919B4 (de) * 2019-04-25 2022-12-15 E.G.O. Elektro-Gerätebau GmbH Wasserführendes Haushaltsgerät und Verfahren zu seinem Betrieb
CN112726141A (zh) * 2020-12-25 2021-04-30 珠海格力电器股份有限公司 一种洗涤水循环系统以及洗涤水循环方法

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DE2910140A1 (de) * 1979-03-15 1980-09-25 Wfk Testgewebe Gmbh Verfahren und vorrichtung zum automatischen waschen und spuelen von waesche
JPS588524A (ja) * 1981-07-07 1983-01-18 Hitachi Plant Eng & Constr Co Ltd 「ろ」過装置
US4668401A (en) * 1985-06-19 1987-05-26 Mitsubishi Rayon Co., Ltd. Hollow-fiber filter module and filtration method using the same
JPH0768136A (ja) * 1993-09-02 1995-03-14 Tsuchiya Mfg Co Ltd 中空糸膜型分離モジュ−ル及びその製造方法
ITPN940011A1 (it) * 1994-02-25 1995-08-25 Zanussi Elettrodomestici Lavatrice con sistema di recupero dell'acqua
US5868937A (en) 1996-02-13 1999-02-09 Mainstream Engineering Corporation Process and system for recycling and reusing gray water
DE19709085C2 (de) * 1996-05-15 2002-05-08 Miele & Cie Verfahren zum Waschen von Wäsche unter Verwendung eines Filtrationsverfahrens
DE10161095C1 (de) * 2001-12-12 2002-11-07 Klaus Vosenkaul Verfahren zur Membranfiltration in Flüssigkeiten

Also Published As

Publication number Publication date
EA019780B1 (ru) 2014-06-30
CN102471981B (zh) 2014-02-26
PL2462272T3 (pl) 2014-09-30
DE102009028357A1 (de) 2011-02-10
EA201270243A1 (ru) 2012-09-28
WO2011015487A1 (de) 2011-02-10
CN102471981A (zh) 2012-05-23
EP2462272A1 (de) 2012-06-13
DE102009028357B4 (de) 2014-12-18

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