EP0441756A1 - Filtre auto-nettoyant pour machines à laver - Google Patents

Filtre auto-nettoyant pour machines à laver Download PDF

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Publication number
EP0441756A1
EP0441756A1 EP91830026A EP91830026A EP0441756A1 EP 0441756 A1 EP0441756 A1 EP 0441756A1 EP 91830026 A EP91830026 A EP 91830026A EP 91830026 A EP91830026 A EP 91830026A EP 0441756 A1 EP0441756 A1 EP 0441756A1
Authority
EP
European Patent Office
Prior art keywords
filter
water
washing
discharge
filtering element
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.)
Withdrawn
Application number
EP91830026A
Other languages
German (de)
English (en)
Inventor
Luigi Taj˩
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0441756A1 publication Critical patent/EP0441756A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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

Definitions

  • the present invention concerns a filter that, placed downstream of one single charging and discharging pump already known in dish washers and similar, always catches all the circulating waterfor obtaining an optimal washing of the dishes or similar, having only clean, i.e. filtered water, in circulation.
  • the filter according to the present invention is kept always clean as it is washed counter-stream and with already filtered (therefore clean) water, each time a water discharge takes place.
  • the filtering element is angularly displaced by an electromagnet controlled by the washing programme; the displacement is requested for closing the water passage from the washing whirlpool and, at the same time, opening the discharge that may however be reached by the water only after having passed through the filter washing it counter-stream.
  • a dish washer realized according to the present invention comprises a filter with wide holes of the known kind for keeping, upstream of the pump, the great impurities or foreign bodies; furthermore the pump and the corresponding self-cleaning filter, forming the object of the present invention.
  • Figures 1 and 2 show a scheme of the filter according to the present invention and the section A-A.
  • Figures 3 and 4 show a section according to line B-B of figure 1 of the filter according to the present invention, respectively placed in the water charging phase to the whirlpools and in the discharging phase.
  • the water coming from the only pump of the dish washer gets into duct 1 that, where required, may be out of one piece with the pump's outlet.
  • the timer that controls thepump for performing the discharge operated an electromagnet 10 that makes rotate the filter body, e.g., of 45°.
  • Said filter gets places so as to show to the dirty water only one side provided with the small net, through which the water passes depositing the residuals taken from the dishes; the filtered water is therefore clean and forced to wash counter-stream the other side of the filter from which it takes away the food residuals already placed on the small net and leads them to the discharge 7 which is made accessible due to the rotation of the filter body 3.
  • the body 3 of the filter contains a helicoidal spring or any other suitable device which, when pushing on the cover 8, realizes a sealing closing on the internal (circular) surface of the frame 9 of the filter on which are provided the ducts 4 for charging to whirlpools and 7 for discharge.
  • a second electromagnet 10 or any other control device moves the filter body 3 in the direction opposite to the precedentone, allowing the counter-stream washing with clean water of the other side of the filter.
  • a simple spring game makes filter 3 placed centrally until one of the two electromagnets gets not excited for putting the filter into washing position.
  • the water aspired from the recollection basin by means of the pump, before getting to the whirlpools (the lower and the upper one) passes through the filter and leaves inside the same all residuals in circulation.
  • the filter In the position exemplified in figure 3, the filter is working on both sides, which makes the whole of the filter's surface disposable.
  • the filter At each discharge, the filter is placed, by means of an electromagnet, in such position as to present to the dirty water only one side of the filter, as shown in figure 4; the water passes through said surface and therefore leaves all residuals before washing in counter-stream the surface of the filter.
  • the filter gets placed on the opposite side washing in counter-stream the surface of the filter previously used.
  • the filter according to the present invention may be automatically controlled following to the exploitation of said pressure variation between inlet and outlet of the fluid from said filter.
  • the device according to the present invention which in its structure is extremely simple, may be completely realized out of plastic and its optimal position is at the outlet of the only pump (for charging and discharging) provided in the dish washer.
EP91830026A 1990-02-02 1991-01-30 Filtre auto-nettoyant pour machines à laver Withdrawn EP0441756A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4759190 1990-02-02
IT47591A IT1239791B (it) 1990-02-02 1990-02-02 Filtro autopulente per macchine lavapiatti.

Publications (1)

Publication Number Publication Date
EP0441756A1 true EP0441756A1 (fr) 1991-08-14

Family

ID=11261297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830026A Withdrawn EP0441756A1 (fr) 1990-02-02 1991-01-30 Filtre auto-nettoyant pour machines à laver

Country Status (2)

Country Link
EP (1) EP0441756A1 (fr)
IT (1) IT1239791B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131914A1 (de) * 1991-09-25 1993-04-01 Licentia Gmbh Siebkombination fuer haushalt-geschirrspuelmaschinen
EP0702928A1 (fr) * 1994-09-22 1996-03-27 Whirlpool Europe B.V. Méthode pour la rinçage dans une machine à laver la vaisselle et dispositif pour la mise en oeuvre du procédé
WO2011076685A1 (fr) * 2009-12-22 2011-06-30 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de filtration, appareil électroménager et procédé de filtration
WO2012049039A1 (fr) * 2010-10-15 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de nettoyage pour un élément exposé aux peluches, appareil ménager pour l'entretien du linge comprenant un tel dispositif de nettoyage ainsi que procédé pour nettoyer un élément exposé aux peluches
EP2443985A3 (fr) * 2012-02-06 2012-07-25 V-Zug AG Appareil ménager doté d'un agencement de filtre dans le système d'écoulement
US8240321B2 (en) 2009-12-18 2012-08-14 Whirlpool Corporation Magnetic drive controlled rotation for dishwasher spray arm
WO2013079348A3 (fr) * 2011-11-28 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Filtre et appareil électroménager à circulation d'eau
WO2019017848A1 (fr) * 2017-07-20 2019-01-24 Planet Care Procédé et dispositif d'élimination de particules, de préférence de microfibres, des eaux usées
CN114855430A (zh) * 2022-05-16 2022-08-05 Tcl家用电器（合肥）有限公司 洗衣机的净水装置和洗衣机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512394A (en) * 1945-05-12 1950-06-20 Apex Electrical Mfg Co Self-cleaning lint trap
US2629390A (en) * 1946-02-13 1953-02-24 Frank G Walker Dishwashing machine
US2649765A (en) * 1946-07-18 1953-08-25 Landers Frary & Clark Self-cleaning strainer arrangement for dishwashing machines
US3429444A (en) * 1966-10-31 1969-02-25 Whirlpool Co Cone filter for an automatic washer
US3774418A (en) * 1972-03-28 1973-11-27 Whirlpool Co Integral self-cleaning filter and side check valve for automatic washer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512394A (en) * 1945-05-12 1950-06-20 Apex Electrical Mfg Co Self-cleaning lint trap
US2629390A (en) * 1946-02-13 1953-02-24 Frank G Walker Dishwashing machine
US2649765A (en) * 1946-07-18 1953-08-25 Landers Frary & Clark Self-cleaning strainer arrangement for dishwashing machines
US3429444A (en) * 1966-10-31 1969-02-25 Whirlpool Co Cone filter for an automatic washer
US3774418A (en) * 1972-03-28 1973-11-27 Whirlpool Co Integral self-cleaning filter and side check valve for automatic washer

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131914A1 (de) * 1991-09-25 1993-04-01 Licentia Gmbh Siebkombination fuer haushalt-geschirrspuelmaschinen
EP0702928A1 (fr) * 1994-09-22 1996-03-27 Whirlpool Europe B.V. Méthode pour la rinçage dans une machine à laver la vaisselle et dispositif pour la mise en oeuvre du procédé
US5711325A (en) * 1994-09-22 1998-01-27 Whirlpool Europe B.V. Method of rinsing in a dishwasher and device for carrying out the method
US8240321B2 (en) 2009-12-18 2012-08-14 Whirlpool Corporation Magnetic drive controlled rotation for dishwasher spray arm
CN102686793A (zh) * 2009-12-22 2012-09-19 Bsh博世和西门子家用电器有限公司 过滤装置，家用器具和用于过滤的方法
WO2011076685A1 (fr) * 2009-12-22 2011-06-30 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de filtration, appareil électroménager et procédé de filtration
CN102686793B (zh) * 2009-12-22 2015-07-22 Bsh家用电器有限公司 过滤装置,家用器具和用于过滤的方法
CN103154352A (zh) * 2010-10-15 2013-06-12 Bsh博世和西门子家用电器有限公司 用于被纤维屑加载的构件的清洁装置，具有这类清洁装置的护理衣物用家用器具以及用于清洁被纤维屑加载的构件的方法
WO2012049039A1 (fr) * 2010-10-15 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de nettoyage pour un élément exposé aux peluches, appareil ménager pour l'entretien du linge comprenant un tel dispositif de nettoyage ainsi que procédé pour nettoyer un élément exposé aux peluches
CN103154352B (zh) * 2010-10-15 2016-02-17 Bsh家用电器有限公司 被纤维屑加载的构件的清洁装置、相应的家用器具及方法
EA023610B1 (ru) * 2010-10-15 2016-06-30 Бсх Хаусгерете Гмбх Устройство для очистки от ворсинок компонента бытового прибора для обработки белья, бытовой прибор для обработки белья с таким устройством и способ очистки от ворсинок компонента бытового прибора для обработки белья
WO2013079348A3 (fr) * 2011-11-28 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Filtre et appareil électroménager à circulation d'eau
EP2443985A3 (fr) * 2012-02-06 2012-07-25 V-Zug AG Appareil ménager doté d'un agencement de filtre dans le système d'écoulement
WO2019017848A1 (fr) * 2017-07-20 2019-01-24 Planet Care Procédé et dispositif d'élimination de particules, de préférence de microfibres, des eaux usées
EP3655365B1 (fr) * 2017-07-20 2022-06-08 Planet Care Resitve za okolje, d.o.o Procédé et dispositif d'élimination de particules des eaux usées
CN114855430A (zh) * 2022-05-16 2022-08-05 Tcl家用电器（合肥）有限公司 洗衣机的净水装置和洗衣机
CN114855430B (zh) * 2022-05-16 2024-04-30 Tcl家用电器（合肥）有限公司 洗衣机的净水装置和洗衣机

Also Published As

Publication number Publication date
IT9047591A0 (it) 1990-02-02
IT1239791B (it) 1993-11-15
IT9047591A1 (it) 1991-08-02

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