EP2263512A1 - Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré - Google Patents

Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré Download PDF

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Publication number
EP2263512A1
EP2263512A1 EP09425235A EP09425235A EP2263512A1 EP 2263512 A1 EP2263512 A1 EP 2263512A1 EP 09425235 A EP09425235 A EP 09425235A EP 09425235 A EP09425235 A EP 09425235A EP 2263512 A1 EP2263512 A1 EP 2263512A1
Authority
EP
European Patent Office
Prior art keywords
filtering element
dishwasher according
opening
sump
filter
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.)
Granted
Application number
EP09425235A
Other languages
German (de)
English (en)
Other versions
EP2263512B2 (fr
EP2263512B1 (fr
Inventor
Ezio Gobbi
Damiano Piazza
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.)
Bonferraro SpA
Original Assignee
Bonferraro SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41258766&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2263512(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bonferraro SpA filed Critical Bonferraro SpA
Priority to PL09425235T priority Critical patent/PL2263512T5/pl
Priority to EP09425235.0A priority patent/EP2263512B2/fr
Publication of EP2263512A1 publication Critical patent/EP2263512A1/fr
Application granted granted Critical
Publication of EP2263512B1 publication Critical patent/EP2263512B1/fr
Publication of EP2263512B2 publication Critical patent/EP2263512B2/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0076Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • A47L15/0081Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with vertical sliding closing doors, e.g. hood-type dishwashers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4202Water filter means or strainers
    • A47L15/4204Flat filters
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4202Water filter means or strainers
    • A47L15/4206Tubular filters

Definitions

  • the present invention relates to industrial dishwashers, and in particular to a hood-type dishwasher with an improved filter assembly aimed at a more effective and efficient washing of the dishes.
  • the object of the present invention is to provide a hood-type dishwasher with an improved filter assembly which overcomes said drawback.
  • the main advantage of the dishwasher according to the present invention is that of having a filter assembly that achieves a high filtering without clogging problems, since it is capable of retaining all those residues that could actually cause damage to the machine while letting through all those residues that could cause the clogging, so as to validly contribute to a good wash effectiveness of the dishwasher.
  • a second advantage of the above-mentioned filter assembly is that it is divided in two parts so as to maintain the possibility of removing the top filter for large residues also when the sump is full, while the wash and drain circuit remains protected by the bottom filter so as to limit the risk that during the removal of the top filter other dirt residues present along the edge of the flat filter and having a size greater than that allowed fall into the sump and end up blocking the pumps or clogging the nozzles.
  • Another advantage of the present dishwasher is that the improved filter assembly is made up of few simple parts, which positively affects its cost and the ease in assembling and disassembling it.
  • the filter assembly of a dishwasher includes a first top filtering element 1, introduced from above into a central opening 2a of a concave-shaped flat filter 2 that acts as a lid of the collecting sump 3 formed in the tank bottom 4.
  • a second bottom filtering element 5 is similarly introduced from above into a central opening 3a at the bottom of the sump 3, said opening 3a being concentric with said opening 2a in the flat filter 2, and a manifold 6 is secured under opening 3a for the connection to the wash and drain pumps.
  • the correct positioning of the bottom filtering element 5 is detected by a suitable sensor that authorizes the operation of the dishwasher.
  • a suitable sensor that authorizes the operation of the dishwasher.
  • An example of such a sensor illustrated only in Figs.1 and 2 , consists of a reed switch 7 arranged in manifold 6 so as to detect the presence of a magnet 8 located in the bottom filtering element 5.
  • the flat filter 2 consists of a perforated stainless steel sheet, with holes having a diameter indicatively between 1,5 and 2,5 mm, which has the function of letting through most (about 75-85%) of the flow rate of the wash pump, and of receiving in its central opening 2a the first filtering element 1 that is made up of two coaxial bodies 1a, 1b joined at their bases through connecting ribs that leave a circular passage 9 whose width "w" ranges from 4 to 6 mm, preferably 5 mm.
  • the inner body 1a is a closed cylinder but for openings on the top side and the outer body 1b is slightly frustoconical and has a top peripheral rim 10 for fitting into opening 2a, a diametral crossbar 11 for its handling, as well as a side wall with vertical passage slots having a width indicatively between 1 and 1,5 mm, preferably 1,2 mm.
  • the connecting ribs defining the circular passage 9 are formed with a pitch in the range from 10 to 16 mm, preferably between 12 and 14 mm.
  • the second filtering element 5 is made up of three coaxial bodies 5a, 5b and 5c of different diameter joined through a circular ring 5d provided with openings. More specifically, the inner body 5a is a solid cylinder extending above ring 5d and has an inlet 12 at the top with an inward tapering; the outer body 5b, slightly frustoconical, also extends solid above ring 5d but is much shorter than cylinder 5a and has a top peripheral rim 13 for fitting into opening 3a of sump 3; and finally the intermediate body 5c is a solid cylinder extending below ring 5d.
  • Both the latter and rim 13 are provided with passage slots having a size equal to or greater than the passage holes of the flat filter 2, indicatively 2,5 mm wide, yet such as to retain the residues having a size that could clog the wash nozzles or block the wash pump.
  • the largest residues retained within the top filtering element 1, having a size such that they can not be discharged through the drain pump, even when the machine is in the operating condition (i.e. with sump 3 full of water) can be removed by the operator by removing only element 1 for cleaning, as shown in Fig.5 .
  • This operation there is the risk that large residues possibly present along the edge of opening 2a fall into sump 3 but even if they did fall therein they would be retained, as previously explained, by ring 5d and rim 13 of the bottom filtering element 5 which, at the end of the use of the machine when sump 3 is empty, can be in turn removed from opening 3a and thoroughly washed.
  • tapered shape of inlet 12 coupling with the similarly tapered outlet 14 has the function not only of assuring a good coupling between the two filtering elements, but also to increase the horizontal distance "d" between the edge of inlet 12 and the edge of opening 2a so as to limit the risk that during the removal of the top filtering element 1 large residues present along the edge of opening 2a fall and reach the discharge region by entering the central cylinder 5 a.
  • the filtering elements 1 and 5 could even be without radial symmetry and openings 2a, 3a could be not concentric as long as the filter assembly forms a smooth path for the passage of residues of suitable size towards the drain pump.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP09425235.0A 2009-06-17 2009-06-17 Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré Active EP2263512B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09425235T PL2263512T5 (pl) 2009-06-17 2009-06-17 Przemysłowa zmywarka kapturowa z ulepszonym zespołem filtracyjnym
EP09425235.0A EP2263512B2 (fr) 2009-06-17 2009-06-17 Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09425235.0A EP2263512B2 (fr) 2009-06-17 2009-06-17 Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré

Publications (3)

Publication Number Publication Date
EP2263512A1 true EP2263512A1 (fr) 2010-12-22
EP2263512B1 EP2263512B1 (fr) 2015-06-17
EP2263512B2 EP2263512B2 (fr) 2019-01-09

Family

ID=41258766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425235.0A Active EP2263512B2 (fr) 2009-06-17 2009-06-17 Lave-vaisselle industriel de type à cloche doté d'un ensemble filtre amélioré

Country Status (2)

Country Link
EP (1) EP2263512B2 (fr)
PL (1) PL2263512T5 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120164A1 (it) * 2012-02-24 2013-08-25 Premark Feg Llc Macchina lavastoviglie con vasca migliorata, in particolare del tipo a cappa mobile
US20160374535A1 (en) * 2011-06-20 2016-12-29 Whirlpool Corporation Dishwasher with microfilter
US20170202425A1 (en) * 2011-06-20 2017-07-20 Whirlpool Corporation Ultra micron filter for a dishwasher
JP2018102557A (ja) * 2016-12-26 2018-07-05 ホシザキ株式会社 洗浄機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10893791B2 (en) 2018-07-19 2021-01-19 Whirlpool Corporation Dishwasher and sump assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096456A (en) * 1981-04-10 1982-10-20 Bosch Siemens Hausgeraete Dishwashing machine sump filter
EP0855165A2 (fr) * 1997-01-22 1998-07-29 SMEG S.p.A. Dispositif de filtrage pour machines à laver la vaisselle
EP1174075A2 (fr) * 2000-07-18 2002-01-23 CANDY S.p.A. Filtre pour lave-vaisselle
EP1386575A1 (fr) * 2002-07-31 2004-02-04 CANDY S.p.A. Lave-vaisselle avec filtre broyeur mis en rotation par le flux du liquide de lavage
EP2087830A1 (fr) * 2008-02-08 2009-08-12 Bonferraro S.p.A. Ensemble filtrant pour lave-vaisselle industriel

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2832084A1 (de) 1978-07-21 1980-01-31 Licentia Gmbh Geschirrspuelmaschine
DE3021081C2 (de) 1980-06-04 1983-02-24 Aweco Apparate- und Gerätebau GmbH & Co KG, 7995 Neukirch Einrichtung zur Niveauregelung bei Geschirrspül- oder Waschmaschinen
DE3626351A1 (de) 1986-08-04 1988-02-11 Licentia Gmbh Verfahren zum betreiben einer geschirrspuelmaschine
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
IT211726Z2 (it) 1987-04-08 1989-04-07 Zanussi Elettrodomestici Macchina lavastoviglie con filtro di ricircolo atupoulente.
DE3842640C2 (de) 1988-12-18 1996-07-18 Hobart Corp N D Ges Des Staate Geschirrspülmaschine
CA2047928A1 (fr) 1990-07-27 1992-01-28 Munehiro Nogi Methode et appareil de lavage de vaisselle, agent anti-adherent et agent de rincage
DE4236931C3 (de) 1991-11-13 2002-08-01 Miele & Cie Sammeltopf einer Geschirrspülmaschine mit einer Siebkombination
KR970010423B1 (ko) 1995-09-19 1997-06-26 엘지전자 주식회사 식기세척기의 오물 처리방법 및 그 장치
US5762080A (en) 1997-01-24 1998-06-09 White Consolidated Industries, Inc. Dishwasher cycle pulsing pump out of collection chamber
DE19906791A1 (de) 1999-02-18 2000-08-24 Miele & Cie Programmgesteuerte Geschirrspülmaschine
ITTO20010353A1 (it) 2001-04-11 2002-10-11 T & P Spa Sistema per il controllo della durezza dell'acqua di lavaggio in una macchina di lavaggio e relativo metodo di controllo.
KR100529879B1 (ko) 2002-11-28 2005-11-22 엘지전자 주식회사 식기세척기의 필터 청소장치
SE0301209D0 (sv) 2003-04-25 2003-04-25 Electrolux Home Prod Corp Filter system for a household dishwasher
EP1477552A1 (fr) 2003-05-13 2004-11-17 Ecolab Inc. Procédé de nettoyage d'articles au moyen d'un lave-vaisselle
ES2251674T3 (es) 2003-07-16 2006-05-01 Bonferraro S.P.A. Lavaplatos con medios para reducir el consumo de agua y energia.
DE102004004104A1 (de) 2003-12-23 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit alternierendem Pumpenbetrieb
DE102006026817A1 (de) 2006-06-09 2008-01-03 Premark Feg L.L.C., Wilmington Gewerbliche Geschirrspülmaschine in Form eines Programmautomaten
ES2327876T3 (es) 2007-09-28 2009-11-04 Bonferraro S.P.A. Ciclo de funcionamiento para lavavajillas industrial.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096456A (en) * 1981-04-10 1982-10-20 Bosch Siemens Hausgeraete Dishwashing machine sump filter
EP0855165A2 (fr) * 1997-01-22 1998-07-29 SMEG S.p.A. Dispositif de filtrage pour machines à laver la vaisselle
EP1174075A2 (fr) * 2000-07-18 2002-01-23 CANDY S.p.A. Filtre pour lave-vaisselle
EP1386575A1 (fr) * 2002-07-31 2004-02-04 CANDY S.p.A. Lave-vaisselle avec filtre broyeur mis en rotation par le flux du liquide de lavage
EP2087830A1 (fr) * 2008-02-08 2009-08-12 Bonferraro S.p.A. Ensemble filtrant pour lave-vaisselle industriel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160374535A1 (en) * 2011-06-20 2016-12-29 Whirlpool Corporation Dishwasher with microfilter
US20170202425A1 (en) * 2011-06-20 2017-07-20 Whirlpool Corporation Ultra micron filter for a dishwasher
US10813525B2 (en) * 2011-06-20 2020-10-27 Whirlpool Corporation Ultra micron filter for a dishwasher
ITTO20120164A1 (it) * 2012-02-24 2013-08-25 Premark Feg Llc Macchina lavastoviglie con vasca migliorata, in particolare del tipo a cappa mobile
WO2013126482A1 (fr) * 2012-02-24 2013-08-29 Premark Feg L.L.C. Lave-vaisselle à réservoir amélioré, en particulier de type à capot mobile
JP2018102557A (ja) * 2016-12-26 2018-07-05 ホシザキ株式会社 洗浄機

Also Published As

Publication number Publication date
PL2263512T3 (pl) 2015-11-30
PL2263512T5 (pl) 2019-05-31
EP2263512B2 (fr) 2019-01-09
EP2263512B1 (fr) 2015-06-17

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