EP0441756A1 - A self-cleaning filter for washing machines - Google Patents
A self-cleaning filter for washing machines Download PDFInfo
- 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- Withdrawn
Links
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Washing And Drying Of Tableware (AREA)
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 (en) | 1991-08-14 |
Family
ID=11261297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91830026A Withdrawn EP0441756A1 (en) | 1990-02-02 | 1991-01-30 | A self-cleaning filter for washing machines |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0441756A1 (it) |
IT (1) | IT1239791B (it) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4131914A1 (de) * | 1991-09-25 | 1993-04-01 | Licentia Gmbh | Siebkombination fuer haushalt-geschirrspuelmaschinen |
EP0702928A1 (en) * | 1994-09-22 | 1996-03-27 | Whirlpool Europe B.V. | Method of rinsing in a dishwasher and device for carrying out the method |
WO2011076685A1 (de) * | 2009-12-22 | 2011-06-30 | BSH Bosch und Siemens Hausgeräte GmbH | Filtervorrichtung, hausgerät und verfahren zum filtern |
WO2012049039A1 (de) * | 2010-10-15 | 2012-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Reinigungsvorrichtung für ein mit flusen beaufschlagtes bauteil, hausgerät zur pflege von wäschestücken mit einer derartigen reinigungsvorrichtung sowie verfahren zum reinigen eines mit flusen beaufschlagten bauteils |
EP2443985A3 (de) * | 2012-02-06 | 2012-07-25 | V-Zug AG | Haushaltsgerät mit Filteranordnung im Ablaufsystem |
US8240321B2 (en) | 2009-12-18 | 2012-08-14 | Whirlpool Corporation | Magnetic drive controlled rotation for dishwasher spray arm |
WO2013079348A3 (de) * | 2011-11-28 | 2013-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Filter und wasserführendes haushaltsgerät |
WO2019017848A1 (en) * | 2017-07-20 | 2019-01-24 | Planet Care | METHOD AND DEVICE FOR REMOVING PARTICLES, PREFERABLY MICROFIBERS, WASTEWATER |
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)
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 |
-
1990
- 1990-02-02 IT IT47591A patent/IT1239791B/it active IP Right Grant
-
1991
- 1991-01-30 EP EP91830026A patent/EP0441756A1/en not_active Withdrawn
Patent Citations (5)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4131914A1 (de) * | 1991-09-25 | 1993-04-01 | Licentia Gmbh | Siebkombination fuer haushalt-geschirrspuelmaschinen |
EP0702928A1 (en) * | 1994-09-22 | 1996-03-27 | Whirlpool Europe B.V. | Method of rinsing in a dishwasher and device for carrying out the method |
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 (de) * | 2009-12-22 | 2011-06-30 | BSH Bosch und Siemens Hausgeräte GmbH | Filtervorrichtung, hausgerät und verfahren zum filtern |
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 (de) * | 2010-10-15 | 2012-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Reinigungsvorrichtung für ein mit flusen beaufschlagtes bauteil, hausgerät zur pflege von wäschestücken mit einer derartigen reinigungsvorrichtung sowie verfahren zum reinigen eines mit flusen beaufschlagten bauteils |
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 (de) * | 2011-11-28 | 2013-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Filter und wasserführendes haushaltsgerät |
EP2443985A3 (de) * | 2012-02-06 | 2012-07-25 | V-Zug AG | Haushaltsgerät mit Filteranordnung im Ablaufsystem |
WO2019017848A1 (en) * | 2017-07-20 | 2019-01-24 | Planet Care | METHOD AND DEVICE FOR REMOVING PARTICLES, PREFERABLY MICROFIBERS, WASTEWATER |
EP3655365B1 (en) * | 2017-07-20 | 2022-06-08 | Planet Care Resitve za okolje, d.o.o | Method and device for removing particles from waste water |
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 |
---|---|
IT1239791B (it) | 1993-11-15 |
IT9047591A0 (it) | 1990-02-02 |
IT9047591A1 (it) | 1991-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19920215 |