EP0855165B1 - Dispositif de filtrage pour machines à laver la vaisselle - Google Patents

Dispositif de filtrage pour machines à laver la vaisselle Download PDF

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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
Application number
EP19980830010
Other languages
German (de)
English (en)
Other versions
EP0855165A3 (fr
EP0855165A2 (fr
Inventor
Roberto Bertazzoni
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.)
Smeg SpA
Original Assignee
Smeg SpA
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Filing date
Publication date
Application filed by Smeg SpA filed Critical Smeg SpA
Publication of EP0855165A2 publication Critical patent/EP0855165A2/fr
Publication of EP0855165A3 publication Critical patent/EP0855165A3/fr
Application granted granted Critical
Publication of EP0855165B1 publication Critical patent/EP0855165B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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)

Claims (12)

  1. Dispositif de filtrage pour lave-vaisselle comprenant un élément de recouvrement (2) fixé sur le dessus d'un premier élément de filtrage (3) introduit dans un second élément de filtrage (4), ce dernier étant à son tour introduit dans un troisième élément de filtrage (5) à mailles serrées, le dispositif étant situé sur le fond du réservoir du lave-vaisselle au centre de la forme concave d'un filtre plan (1) à mailles larges, caractérisé en ce que l'élément de recouvrement (2) a une forme circulaire sensiblement tronconique avec une surface concave latérale (6) dans laquelle sont formées une pluralité de fentes radiales arrangées symétriquement (7), un trou axial circulaire (8) étant formé sur le dessus de l'élément de recouvrement (2), le diamètre de l'élément de recouvrement (2) étant inférieur à celui de la périphérie interne supérieure (14) dudit premier élément de filtrage (3) de telle sorte qu'entre ladite périphérie (14) et ledit bord (10) de l'élément de recouvrement (2), il y a un espace annulaire circulaire pour le passage d'eau, ayant une largeur (L) située entre 4,5 et 6,5 mm.
  2. Dispositif de filtrage selon la revendication 1, caractérisé en ce que le premier élément de filtrage (3) a un corps cylindrique circulaire (15) se terminant sur le dessus avec un disque (16) dans lequel une pluralité de trous (13) sont formés, une pluralité de fentes verticales arrangées symétriquement (17) étant formée dans ledit corps cylindrique (15) ayant une largeur située entre 2,5 et 3,5 mm, lesdites fentes (17) s'étendant à partir dudit disque (16) pratiquement jusqu'à l'extrémité inférieure du corps cylindrique (15).
  3. Dispositif de filtrage selon la revendication 2, caractérisé en ce que les fentes (17) sont au nombre de six et ont une largeur de 3 mm.
  4. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le second élément de filtrage (4) comporte un corps cylindrique circulaire (20) dans lequel une pluralité de fentes verticales arrangées symétriquement (21) sont formées qui ont une largeur située entre 0,8 et 1,2 mm, lesdites fentes (21) s'étendant à partir de l'extrémité inférieure dudit corps cylindrique (20) pratiquement jusqu'à son extrémité supérieure, le corps cylindrique (20) étant également pourvu d'une base inférieure dans laquelle sont formés un siège central (22) pour l'introduction du premier filtre (3), ainsi qu'une pluralité de trous arrangés symétriquement (23).
  5. Dispositif de filtrage selon la revendication 4, caractérisé en ce que les fentes (21) sont au nombre de quarante-huit et ont une largeur de 1,2 mm.
  6. Dispositif de filtrage selon l'une ou plusieurs des revendications 2 à 5, caractérisé en ce que le troisième élément de filtrage (5) est constitué d'un filtre cylindrique avec des mailles de 0,25 mm pourvu de bords renforcés supérieur et inférieur, ledit bord supérieur étant pourvu de moyens pour se coupler avec la périphérie externe du disque (16) du premier élément de filtrage (3).
  7. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que les fentes (7) de l'élément de recouvrement (2) sont au nombre de douze et ont une largeur située entre 1,2 et 1,6 mm, de préférence 1,4 mm.
  8. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le trou axial (8) de l'élément de recouvrement (2) a un diamètre (D) situé entre 5 et 7 mm, de préférence 7 mm.
  9. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la largeur (L) de l'espace annulaire circulaire entre l'élément de recouvrement (2) et le premier élément de filtrage (3) est égal à 5,4 mm.
  10. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la surface concave (6) de l'élément de recouvrement (2) a un rayon de courbure (R) situé entre 15 et 25 mm, de préférence 20 mm.
  11. Dispositif de filtrage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la surface concave (6) de l'élément de recouvrement (2) est divisé en quatre parties égales par quatre ailettes orthogonales verticales (9) s'étendant à partir du bord du trou axial (8) vers le bord périphérique (10).
  12. Dispositif de filtrage selon l'une ou plusieurs des revendications 2 à 11, caractérisé en ce que l'élément de recouvrement (2) est fixé sur le premier élément de filtrage (3) par l'intermédiaire d'une paire de dents opposées (11) formées de manière monobloc sur la face inférieure de l'élément de recouvrement (2) et adaptées à venir en prise avec des trous (13) formés dans le premier élément de filtrage (3).
EP19980830010 1997-01-22 1998-01-15 Dispositif de filtrage pour machines à laver la vaisselle Expired - Lifetime EP0855165B1 (fr)

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 (fr) 1998-07-29
EP0855165A3 EP0855165A3 (fr) 1999-01-13
EP0855165B1 true EP0855165B1 (fr) 2003-04-16

Family

ID=11375690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980830010 Expired - Lifetime EP0855165B1 (fr) 1997-01-22 1998-01-15 Dispositif de filtrage pour machines à laver la vaisselle

Country Status (4)

Country Link
EP (1) EP0855165B1 (fr)
DE (1) DE69813327T2 (fr)
ES (1) ES2198041T3 (fr)
IT (1) IT1289186B1 (fr)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1318186B1 (it) * 2000-07-18 2003-07-23 Candy Spa Apparato di filtraggio per lavastoviglie
US20080237154A1 (en) * 2007-02-06 2008-10-02 Electrolux Home Products, Inc. Filter device for a dishwasher, and associated apparatus and method
US8828148B2 (en) 2007-02-06 2014-09-09 Electrolux Home Products, Inc. Dishwasher with accessible control unit, and associated method
DE602008000512D1 (de) * 2008-02-08 2010-02-25 Bonferraro Spa Filteranordnung für industrielle Geschirrspüler
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
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating 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
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
EP2519137A1 (fr) * 2009-12-31 2012-11-07 Arçelik Anonim Sirketi Lave-vaisselle comportant un microfiltre
KR101669282B1 (ko) * 2010-03-31 2016-10-25 엘지전자 주식회사 식기 세척기
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9668636B2 (en) 2010-11-16 2017-06-06 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
US9010344B2 (en) * 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
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
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US20120318296A1 (en) 2011-06-20 2012-12-20 Whirlpool Corporation Ultra micron filter for a dishwasher
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
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
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
AU2016295058B2 (en) * 2015-07-21 2021-03-04 Lg Electronics Inc. Dishwasher
TR201619887A2 (tr) * 2016-12-28 2018-07-23 Arcelik As Mi̇krofi̇ltre i̇çeren bi̇r bulaşik maki̇nasi
EP3876809B1 (fr) * 2018-11-09 2023-07-12 Arçelik Anonim Sirketi Lave-vaisselle comprenant un filtre
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 (fr) 2022-11-07 2024-05-15 Arçelik Anonim Sirketi Lave-vaisselle comprenant un mécanisme de filtration

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE69813327T2 (de) 2003-12-11
IT1289186B1 (it) 1998-09-29
ITMI970111A1 (it) 1998-07-22
DE69813327D1 (de) 2003-05-22
ES2198041T3 (es) 2004-01-16
EP0855165A3 (fr) 1999-01-13
EP0855165A2 (fr) 1998-07-29

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