EP0855165B1 - Improved filtering device for dishwashers - Google Patents
Improved filtering device for dishwashers Download PDFInfo
- Publication number
- EP0855165B1 EP0855165B1 EP19980830010 EP98830010A EP0855165B1 EP 0855165 B1 EP0855165 B1 EP 0855165B1 EP 19980830010 EP19980830010 EP 19980830010 EP 98830010 A EP98830010 A EP 98830010A EP 0855165 B1 EP0855165 B1 EP 0855165B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filtering
- filtering device
- covering member
- slots
- cylindrical body
- 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.)
- Expired - Lifetime
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
-
- 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
- A47L15/4206—Tubular filters
Definitions
- the present invention relates to dishwashing machines for domestic use, and in particular to an improved filtering device to be used in said machines.
- the filtering group generally includes a plane filter with a comparatively large-mesh net (1-2 mm.) located on the tank bottom and having a concave shape. Therefore this filter conveys a portion of the water towards a lower central area, where there is arranged an assembly of two or three vertical concentric filters with progressively smaller passage ports.
- the object of the present invention is to provide a filtering device suitable to overcome the above-mentioned drawback.
- the main advantage of the filtering device according to the present invention is to provide a high filtration without clogging problems, so as to validly contribute to a good washing effectiveness of the dishwasher.
- Another advantage of the present device is that it is made up of few simple pieces, which positively affects its cost and ease of assembly and disassembly.
- a plane filter 1 with a large-mesh net (1-2 mm), having a concave shape and centrally provided in the lowermost area with a seat for the filtering device according to the present invention.
- Said device is substantially made up of a covering member 2 fixed at the top of a first filtering member 3 introduced into a second filtering member 4, the latter being in turn introduced into a third filtering member 5 with a close-mesh net (0,25-0,40 mm), a so-called microfilter.
- the working of the present filtering device is not different from that of known filters as far as the general operation is concerned.
- the water sprayed onto the dishes brings therewith food residues while falling down on the tank bottom, the larger residues being retained at the surface of the filtering group by the plane filter 1. In this way they are clearly visible to the user which can remove them manually before the following washing cycle.
- Most of the water (about 80%) goes through the plane filter 1 and is directly sucked in by the washing pump, whereas the remaining portion enters the central filtering device through a plurality of passage ports P, as it will be better explained further on. Since during the washing cycle the water contained in the dishwasher is recycled by the washing pump about 10-12 times per minute, it may be assumed with a good approximation that during the whole cycle all the particles in the water will finally go through the filtering device.
- a washing duct CL having a plurality of nozzles which tangentially spray the microfilter 5.
- Water coming from the washing pump is periodically fed into the duct CL, e.g. at the beginning of each rinsing step, by opening an electrovalve EV. In this way the whole surface of microfilter 5, which is rotatably mounted in its seat, is washed by a counter-current from the nozzles of duct CL.
- the covering member 2 (figs.3a-3c) has a substantially frustoconical circular shape with a concave lateral surface 6 having a curvature radius "R" (fig.1) between 15 and 25 mm, preferably 20 mm.
- R curvature radius
- a circular axial hole 8 having a diameter "d" (fig.1) between 5 and 7 mm, preferably 7 mm.
- the concave surface 6 is divided into four equal portions by four vertical orthogonal fins 9 extending from the edge of the axial hole 8 to the periphery 10 of cover 2.
- the fixing of the covering member 2 on the first filtering member 3 is performed through a pair of opposite teeth 11 integrally formed, together with a pair of reference pins 12, on the lower face of cover 2. Teeth 11 and pins 12 engage corresponding holes 13 formed in the first filtering member 3 (fig1 and fig.4a), so as to keep cover 2 centered and spaced with respect to the first filter 3.
- the diameter of cover 2 is smaller than that of the top inner periphery 14 of the first filter 3, so that between said periphery 14 and the edge 10 of cover 2 there is a circular ring-shaped space having a width "L" (fig.1) between 4,5 and 6,5 mm, preferably 5,4 mm.
- Said circular ring-shaped space, slots 7 and the axial hole 8 of cover 2 together are the above-mentioned passage ports P which allow the water to enter the filtering device according to the present invention.
- the first filtering member 3 (figs.4a-4c) has a circular cylindrical body 15 ending at the top with a disk 16 in which the above-mentioned holes 13 are formed.
- These slots 17 extend from disk 16 almost until the lower end of the cylindrical body 15.
- two opposite vertical lugs 18 shaped so as to engage in corresponding seats 19 formed in the second filtering member 4 (fig.5a). In this way, the first filter 3 is restrained against axial rotation with respect to the second filter 4 in which it is introduced.
- the second filtering member 4 (figs.5a-5c) also has a circular cylindrical body 20, whose diameter is reduced at about mid-height.
- These slots 21 extend from the lower end of the cylindrical body 20 almost until the top, with a discontinuity at the change in diameter.
- the structural integrity of body 20 is assured by a lower base in which there are formed a central seat 22, for introducing the first filter 3, as well as a plurality of holes 23, sixteen holes in the illustrated embodiment, symmetrically arranged for draining the filtered particles.
- microfilter 5 (figs. 1, 2) which simply consists of a cylindrical net, with 0,25 mm mesh, provided with top and bottom reinforced edges.
- the global assembly of the various members of the present filtering device is achieved by coupling the top edge of microfilter 5 with the outer periphery of disk 16 of the first filter 3, which projects with respect to the second filter 4.
Landscapes
- Washing And Drying Of Tableware (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Centrifugal Separators (AREA)
- Filtration Of Liquid (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI970111 | 1997-01-22 | ||
ITMI970111 IT1289186B1 (it) | 1997-01-22 | 1997-01-22 | Dispositivo di filtrazione perfezionato per macchine lavastoviglie |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0855165A2 EP0855165A2 (en) | 1998-07-29 |
EP0855165A3 EP0855165A3 (en) | 1999-01-13 |
EP0855165B1 true EP0855165B1 (en) | 2003-04-16 |
Family
ID=11375690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980830010 Expired - Lifetime EP0855165B1 (en) | 1997-01-22 | 1998-01-15 | Improved filtering device for dishwashers |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0855165B1 (it) |
DE (1) | DE69813327T2 (it) |
ES (1) | ES2198041T3 (it) |
IT (1) | IT1289186B1 (it) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1318186B1 (it) * | 2000-07-18 | 2003-07-23 | Candy Spa | Apparato di filtraggio per lavastoviglie |
US8828148B2 (en) | 2007-02-06 | 2014-09-09 | Electrolux Home Products, Inc. | Dishwasher with accessible control unit, and associated method |
US20080237154A1 (en) * | 2007-02-06 | 2008-10-02 | Electrolux Home Products, Inc. | Filter device for a dishwasher, and associated apparatus and method |
EP2087830B1 (en) * | 2008-02-08 | 2010-01-06 | Bonferraro S.p.A. | Filter assembly for industrial dishwasher |
KR20100037459A (ko) * | 2008-10-01 | 2010-04-09 | 엘지전자 주식회사 | 식기 세척기 |
KR101582877B1 (ko) * | 2009-04-03 | 2016-01-07 | 엘지전자 주식회사 | 식기세척기 |
PL2263512T5 (pl) * | 2009-06-17 | 2019-05-31 | Bonferraro Spa | Przemysłowa zmywarka kapturowa z ulepszonym zespołem filtracyjnym |
DE102009027910A1 (de) * | 2009-07-22 | 2011-01-27 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit einem optimierten Siebsystem |
US8667974B2 (en) | 2009-12-21 | 2014-03-11 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US8746261B2 (en) | 2009-12-21 | 2014-06-10 | Whirlpool Corporation | Rotating drum filter for a dishwashing machine |
US8627832B2 (en) * | 2010-12-13 | 2014-01-14 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US9119515B2 (en) | 2010-12-03 | 2015-09-01 | Whirlpool Corporation | Dishwasher with unitary wash module |
US9918609B2 (en) | 2009-12-21 | 2018-03-20 | Whirlpool Corporation | Rotating drum filter for a dishwashing machine |
US9687135B2 (en) | 2009-12-21 | 2017-06-27 | Whirlpool Corporation | Automatic dishwasher with pump assembly |
CN102695445B (zh) * | 2009-12-31 | 2016-04-13 | 阿塞里克股份有限公司 | 包括微过滤器的洗碗机 |
KR101669282B1 (ko) * | 2010-03-31 | 2016-10-25 | 엘지전자 주식회사 | 식기 세척기 |
US9668636B2 (en) | 2010-11-16 | 2017-06-06 | Whirlpool Corporation | Method and apparatus for dishwasher with common heating element for multiple treating chambers |
US9113766B2 (en) | 2010-11-16 | 2015-08-25 | Whirlpool Corporation | Method and apparatus for dishwasher with common heating element for multiple treating chambers |
US9034112B2 (en) | 2010-12-03 | 2015-05-19 | Whirlpool Corporation | Dishwasher with shared heater |
US8733376B2 (en) | 2011-05-16 | 2014-05-27 | Whirlpool Corporation | Dishwasher with filter assembly |
US9107559B2 (en) | 2011-05-16 | 2015-08-18 | Whirlpool Corporation | Dishwasher with filter assembly |
US9861251B2 (en) | 2011-06-20 | 2018-01-09 | Whirlpool Corporation | Filter with artificial boundary for a dishwashing machine |
US9005369B2 (en) | 2011-06-20 | 2015-04-14 | Whirlpool Corporation | Filter assembly for a dishwasher |
US9010344B2 (en) | 2011-06-20 | 2015-04-21 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US20120318296A1 (en) | 2011-06-20 | 2012-12-20 | Whirlpool Corporation | Ultra micron filter for a dishwasher |
US9265401B2 (en) | 2011-06-20 | 2016-02-23 | Whirlpool Corporation | Rotating filter for a dishwashing machine |
US9301667B2 (en) | 2012-02-27 | 2016-04-05 | Whirlpool Corporation | Soil chopping system for a dishwasher |
US9237836B2 (en) | 2012-05-30 | 2016-01-19 | Whirlpool Corporation | Rotating filter for a dishwasher |
US9730570B2 (en) | 2012-05-30 | 2017-08-15 | Whirlpool Corporation | Reduced sound with a rotating filter for a dishwasher |
US9532700B2 (en) | 2012-06-01 | 2017-01-03 | Whirlpool Corporation | Dishwasher with overflow conduit |
US9833120B2 (en) | 2012-06-01 | 2017-12-05 | Whirlpool Corporation | Heating air for drying dishes in a dishwasher using an in-line wash liquid heater |
US9451862B2 (en) | 2012-06-01 | 2016-09-27 | Whirlpool Corporation | Dishwasher with unitary wash module |
US9554688B2 (en) | 2012-10-23 | 2017-01-31 | Whirlpool Corporation | Rotating filter for a dishwasher and methods of cleaning a rotating filter |
KR102343467B1 (ko) * | 2015-02-16 | 2021-12-28 | 삼성전자주식회사 | 식기 세척기 |
EP3747335B1 (en) * | 2015-07-21 | 2021-09-29 | LG Electronics Inc. | Dishwasher |
TR201619887A2 (tr) * | 2016-12-28 | 2018-07-23 | Arcelik As | Mi̇krofi̇ltre i̇çeren bi̇r bulaşik maki̇nasi |
WO2020094297A1 (en) * | 2018-11-09 | 2020-05-14 | Arcelik Anonim Sirketi | A dishwasher comprising a filter |
CN112915582B (zh) * | 2021-01-25 | 2022-11-29 | 江西永通科技股份有限公司 | 一种唇釉制作中红心火龙果中水溶性天然色素提取工具 |
EP4368094A1 (en) | 2022-11-07 | 2024-05-15 | Arçelik Anonim Sirketi | A dishwasher comprising a filtering mechanism |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1197983B (it) * | 1986-11-13 | 1988-12-21 | Candy Elettrodomestici | Ciclo di lavaggio per macchine lavatrici, in particolare lavastoviglie e macchina lavatrice operante secondo tale ciclo |
IT1276718B1 (it) * | 1995-06-14 | 1997-11-03 | Smeg Spa | Dispositivo per controllare il lavaggio del filtro di una macchina lavastoviglie |
-
1997
- 1997-01-22 IT ITMI970111 patent/IT1289186B1/it active IP Right Grant
-
1998
- 1998-01-15 ES ES98830010T patent/ES2198041T3/es not_active Expired - Lifetime
- 1998-01-15 EP EP19980830010 patent/EP0855165B1/en not_active Expired - Lifetime
- 1998-01-15 DE DE1998613327 patent/DE69813327T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ES2198041T3 (es) | 2004-01-16 |
IT1289186B1 (it) | 1998-09-29 |
EP0855165A2 (en) | 1998-07-29 |
DE69813327D1 (de) | 2003-05-22 |
EP0855165A3 (en) | 1999-01-13 |
ITMI970111A1 (it) | 1998-07-22 |
DE69813327T2 (de) | 2003-12-11 |
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