EP1256308B1 - Lave-vaisselle avec dispositif de broyage des déchets - Google Patents

Lave-vaisselle avec dispositif de broyage des déchets Download PDF

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Publication number
EP1256308B1
EP1256308B1 EP02009729A EP02009729A EP1256308B1 EP 1256308 B1 EP1256308 B1 EP 1256308B1 EP 02009729 A EP02009729 A EP 02009729A EP 02009729 A EP02009729 A EP 02009729A EP 1256308 B1 EP1256308 B1 EP 1256308B1
Authority
EP
European Patent Office
Prior art keywords
dishwashing machine
rotor
shredding apparatus
machine according
garbage
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
EP02009729A
Other languages
German (de)
English (en)
Other versions
EP1256308A2 (fr
EP1256308A3 (fr
Inventor
Piero Durazzani
Daniele Favaro
Ugo Favret
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.)
HydroMaid International Inc
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
HydroMaid International Inc
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 Electrolux Home Products Corp NV, HydroMaid International Inc filed Critical Electrolux Home Products Corp NV
Publication of EP1256308A2 publication Critical patent/EP1256308A2/fr
Publication of EP1256308A3 publication Critical patent/EP1256308A3/fr
Application granted granted Critical
Publication of EP1256308B1 publication Critical patent/EP1256308B1/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 refers to a dishwashing machine of the type incorporating a garbage shredder adapted to enable the soil being removed from the dishes and the other washload items in general to be cut into tiny particles under corresponding improvement in the performance and effectiveness of the filtering system and, ultimately, the entire dishwashing machine.
  • Garbage shredding apparatuses are generally known to usually comprise an array of knives adapted to rotate with respect to an array of stationary blades. As such, they are also generally known as being subject to jamming due to the presence of particularly hard soil matters, such as chicken bones or the like, which practically prevent them from operating in a correct manner.
  • This problem is of particularly great significance in dishwashing machines, in which, owing mainly to problems deriving from the need to reduce space requirements, the available power for driving the garbage shredding apparatus is relatively low, while particularly tough soil matters capable of causing the garbage shredding apparatus to jam are on the other hand quite frequently present inside such machines.
  • a hydraulically operated garbage shredding apparatus such as the one that is for instance described in US-A-6 012 662.
  • an alternating piston is driven by water under pressure in an annular chamber and is connected to the rotating knives of the garbage shredding apparatus.
  • a valve is provided with an alternating control piston so as to be able to selectively divert the water under pressure in said annular chamber on to opposite sides of the actuating piston.
  • the rotating knives are operated so as to be capable to rotate in opposite directions, in particular when they happen to be jammed by particularly tough soil matters. Conclusively, it can therefore be said that the garbage shredder is capable of working effectively under any operating conditions.
  • a garbage shredder of the above described type is relatively bulky, ie. needs quite a lot of space, and requires a connection to a water supply line capable of supplying water at a particularly high pressure (as is the case in the USA, for instance). It in fact becomes practically ineffective if it is connected to a water supply line with a rather reduced supply pressure, eg. as this is the case in European counties, or as in US 3 401 892.
  • a further purpose of the present invention is to provide a dishwashing machine of the above cited kind, which is provided with a filtering system that is particularly simple, rational and effective, such as to be instrumental in substantially improving the washing performance capabilities of the dishwashing machine.
  • Another purpose yet of the present invention is to provide a dishwashing machine of the above cited kind, which is provided with a water circuit that is particularly adapted to boost the performance capabilities of the built-in garbage shredding apparatus.
  • the dishwashing machine mainly comprises a washing vessel 1 (shown only partially) provided on its bottom portion with a water collecting sump 2, to which there is connected the suction side 3 of a circulation pump 4, the delivery side 5 of which is connected to at least a rotating spray arm 6 so as to spray washing liquor on to the washload items arranged in appropriate support racks (not shown for reasons of greater simplicity).
  • the washing vessel 1 also accommodates, below the rotating spray arm 6, a filtering system arranged in the flow-path of the washing liquor which, upon having been so sprayed on to the washload items, collects into the sump 2 in view of being taken in again by the circulation pump 4.
  • said filtering system comprises a planar or frusto-conical, preferably coarse-mesh filter portion 7, which is provided with a mouth 8 between the edge of which and the bottom of the sump 2 there extends the main filter portion, which is generally indicated at 9 in the Figure.
  • the filter 9 has preferably a very fine mesh structure and is the section of the filtering systems that most of all contributes to the retention of the soil particles from the flow of the water circulated by the pump 4.
  • the filter 9 has substantially a frusto-conical (as shown in the Figure, actually), cylindrical or a similar shape, and is adapted to be driven rotatably, substantially about its own main axis, by the rotor 11 of a garbage shredding apparatus which is incorporated in the dishwashing machine and is generally indicated at 10 in the Figure.
  • the garbage shredding apparatus 10 comprises knives capable of rotating with respect to an array of stationary blades of the type described in US-A-6 109 551.
  • the filter 9 is rotatably integral with a driving shaft 12 of the rotor 11, to which it is connected through a frusto-conical flange 13 that forms for the garbage shredder 10 a kind of inlet hopper communicating with the washing vessel 1 upstream of the filtering system 7, 9.
  • the garbage shredder 10 also comprises an outlet aperture 14, preferably provided in the bottom of the water collecting sump 2, from which there branches off an outlet conduit 15 provided with a drain pump 16.
  • the outlet conduit 15 of the dishwashing machine branches off the sump 2 in correspondence of the garbage shredder 10.
  • the garbage shredder 10 extends from the bottom of the sump 2 up to the inlet hopper 13 with a side wall that is substantially defined by an auxiliary coarse-mesh filter 17 that is substantially surrounded by the main filter 9, of which it advantageously limits the possibility of getting clogged.
  • the rotor 11 of the garbage shredder 10 is connected to an electric-bi-directional motor 18, which is controlled by sensor means 19 adapted to either directly or indirectly detect the resisting torque applied to the rotor 11 and to cause the same rotor to reverse the direction of rotation thereof when the resisting torque is detected to exceed a pre-determined threshold value.
  • Said sensor means 19 may include a threshold-value comparator built into the programme sequence control unit of the machine (not shown in the Figure for reasons of greater simplicity, and comprising for instance a Motorola 68HC705 microprocessor) and driven by means of an input 20 with a signal that is indicative of the above mentioned resisting torque.
  • a signal may for instance be the current absorbed by the motor 18, or the phase difference between the voltage and the current of the motor 18, or the like.
  • the rotor 11 of the garbage shredder tends to become jammed due to the presence of a foreign matter that proves particularly tough and is apt to give rise to a resisting torque in excess of a pre-determined value
  • the sensor 19 causes (through the programme sequence control unit of the machine) the rotor 11 to reverse its direction of rotation, thereby ensuring a maximum extent of effectiveness in the operation of the garbage shredder 10.
  • the rotor 11 is preferably driven by the motor 18 so as to be capable to regularly reverse its direction of rotation in a cyclic manner, eg. upon each complete revolution thereof.
  • the rotor 11 is arranged to rotatably drive also the filter 9, and the latter is associated to at least an adjacent stationary nozzle 21 connected to the delivery side 5 of the circulation pump 4 via a calibrated-bore branch-pipe 22.
  • the outlet conduit 15 comprises, downstream of the drain pump 16, a flow-diverting device 24 from which a re-circulation pipe 23 communicating with the interior of the washing vessel 1 branches off.
  • a diverting device 24 is normally in a condition in which the drain pump 16 is in communication with the sole outlet conduit 15.
  • the programme sequence control unit of the machine determines the operation of the circulation pump 4 and the drive motor 18; it furthermore commands the diverter 24 to temporarily switch over to an operational position in which the delivery side of the drain pump 16, which is also operated temporarily, is in communication with the re-circulation pipe 23.
  • the soil particles that are flushed off the washload items due to the action of the rotating spray arm 6 are shredded by the garbage shredder 10 and recirculated by the pump 16 through the pipe 23 that conveys them again into the washing vessel 1 and, then, again through the garbage shredder 10.
  • the re-circulation pipe 23 enables a real closed-loop water-flow circuit, passing through the garbage shredder 10, to be realized for the soil particles conveyed by a flow of water generated by the drain pump 16, which therefore performs a twofold task.
  • the programme sequence control unit of the machine may of course cause the flow diverter 24 to switch back into its normal resting position, so as to enable the soiled water contained in the washing vessel 1 to be let off through the outlet pipe 15.
  • the resulting absence of soil on the bottom of the washing vessel 1 brings about the quite important advantage that the subsequent washing, rinsing and/or drying phases of the cycle will be able to be carried out with completely clean water and in a substantial absence of bad odours.
  • the general operation of the dishwashing machine may be of a substantially traditional kind, so that it shall not be dealt with here any further for reasons of greater simplicity.

Landscapes

  • Crushing And Pulverization Processes (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (9)

  1. Lave-vaisselle comportant un dispositif de broyage de déchets encastré (10) incorporé dans celui-ci qui a une entrée en communication avec la cuve de lavage (1) de la machine et une sortie (14) reliée à une conduite de sortie (15), ledit dispositif de broyage de déchets (10) comportant à son tour un rotor (11) adapté pour tourner de manière sélective dans les deux sens opposés, caractérisé en ce que ledit rotor (11) est entraíné par un moteur électrique bidirectionnel (18), qui est commandé par des moyens formant capteur (19) adaptés pour détecter le couple résistant appliqué au rotor (11) du dispositif de broyage de déchets (10) et pour amener le susdit rotor (11) à inverser son sens de rotation lorsque l'on détecte que le couple résistant dépasse une valeur de seuil prédéterminée.
  2. Lave-vaisselle selon la revendication 1, caractérisé en ce que lesdits moyens formant capteur (19) comportent un comparateur de valeurs de seuil commandé par un signal qui est indicatif dudit couple résistant, tel que le courant absorbé par ledit moteur électrique (18), la différence de phase entre la tension et le courant du susdit moteur (18), ou analogue.
  3. Lave-vaisselle selon la revendication 1, caractérisé en ce que le rotor (11) dudit dispositif de broyage de déchets (10) est normalement entraíné par ledit moteur (18) afin d'inverser son sens de rotation de manière cyclique.
  4. Lave-vaisselle selon la revendication 1, comportant un système de filtrage (7, 9, 17) agencé dans le trajet d'écoulement de l'eau de lavage mise en circulation par une pompe de circulation (4), caractérisé en ce qu'au moins une partie principale (9) dudit système de filtrage (7, 9, 17) est adaptée pour être conjointement entraínée de manière rotative avec le rotor (11) du dispositif de broyage de déchets (10) et est associée à au moins un gicleur (21) ou analogue, adapté pour être alimenté par ladite pompe de circulation (4) afin de produire un jet d'eau à contre-courant capable de rincer et de nettoyer ladite partie (9) dudit système de filtrage.
  5. Lave-vaisselle selon la revendication 4, caractérisé en ce que ledit gicleur (21) est relié au côté refoulement (5) de la pompe de circulation (4) par un tuyau d'embranchement à alésage calibré (22).
  6. Lave-vaisselle selon la revendication 4, caractérisé en ce que ladite partie principale (9) du système de filtrage a une forme sensiblement tronconique ou cylindrique et est reliée de manière rotative audit rotor (11) dudit dispositif de broyage de déchets (10) afin de pouvoir tourner autour de son propre axe principal, en formant un seul bloc avec celui-ci.
  7. Lave-vaisselle selon la revendication 4, caractérisé en ce que ledit dispositif de broyage de déchets (10) a au moins une paroi qui est sensiblement définie par un filtre auxiliaire (17), qui est sensiblement entouré par ledit filtre principal (9).
  8. Lave-vaisselle selon la revendication 1, caractérisé en ce que ladite conduite de sortie (15) comporte, en aval d'une pompe de vidange (16), des moyens de déviation d'écoulement normalement inopérants (24) adaptés pour relier de manière sélective, pendant une phase temporaire, le côté refoulement de ladite pompe de vidange (16) à un tuyau de retour (23) communiquant avec l'intérieur de la cuve de lavage (1), de manière à créer un circuit de transport d'eau en boucle fermée, passant à travers ledit dispositif de broyage de déchets (10), pour les particules de déchets transportées par un écoulement d'eau généré par ladite pompe de vidange (16).
  9. Lave-vaisselle selon la revendication 8, caractérisé en ce que, à la fin de ladite phase temporaire, la pompe de vidange (16) est temporairement actionnée pour évacuer, par l'intermédiaire desdits moyens de déviation (24), l'eau contenant les particules de déchets qui ont été précédemment broyées le plus finement par ledit dispositif de broyage de déchets (10).
EP02009729A 2001-05-08 2002-04-30 Lave-vaisselle avec dispositif de broyage des déchets Expired - Lifetime EP1256308B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN20010034 2001-05-08
IT2001PN000034A ITPN20010034A1 (it) 2001-05-08 2001-05-08 Lavastoviglie con tritarifiuti

Publications (3)

Publication Number Publication Date
EP1256308A2 EP1256308A2 (fr) 2002-11-13
EP1256308A3 EP1256308A3 (fr) 2003-05-28
EP1256308B1 true EP1256308B1 (fr) 2004-08-18

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Application Number Title Priority Date Filing Date
EP02009729A Expired - Lifetime EP1256308B1 (fr) 2001-05-08 2002-04-30 Lave-vaisselle avec dispositif de broyage des déchets

Country Status (4)

Country Link
EP (1) EP1256308B1 (fr)
AT (1) ATE273657T1 (fr)
DE (1) DE60200967T2 (fr)
IT (1) ITPN20010034A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102695445A (zh) * 2009-12-31 2012-09-26 阿塞里克股份有限公司 包括微过滤器的洗碗机
EP2532432A2 (fr) 2011-06-07 2012-12-12 Avermann Laser- und Kant-Zentrum GmbH Dispositif de broyage pour déchets alimentaires et de restes de repas, en particulier dans le domaine gastronomique, ainsi que le procédé de fonctionnement d'un tel dispositif de broyage
CN103188985A (zh) * 2010-09-02 2013-07-03 Lg电子株式会社 洗碟机
DE102013200164A1 (de) 2012-02-03 2013-08-08 Avermann Laser- und Kant-Zentrum GmbH Vorrichtung zur Aufbereitung von organischen Stoffen, nämlich Tiernahrung-, Speise- oder Lebensmittelabfällen und/oder Abfällen des Schlachtgewerbes unterschiedlicher Ausgangsstruktur und Konsistenz
US8574376B2 (en) 2004-12-23 2013-11-05 Bsh Bosch Und Siemens Hausgeraete Gmbh Water-conducting household appliance and method for the operation thereof
US9451867B2 (en) 2012-01-26 2016-09-27 Whirlpool Corporation Dishwasher and ozone generator
CN108289587A (zh) * 2015-10-21 2018-07-17 伊利诺斯工具制品有限公司 器皿清洗机怠速系统和方法
DE102017125154A1 (de) 2017-06-21 2018-12-27 Avermann Laser- und Kant-Zentrum GmbH Zerkleinerungsvorrichtung für Speise- und Lebensmittelabfälle, insbesondere im gastronomischen Bereich

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DE102004060950A1 (de) 2004-12-17 2006-06-29 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit wartungsarmem Siebsystem
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US8177915B2 (en) 2009-05-13 2012-05-15 Electrolux Home Products, Inc. Filtration system for a dishwasher, and associated apparatus and method
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
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
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
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
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
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
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
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
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CN106419795A (zh) * 2016-12-06 2017-02-22 江苏理工学院 餐具清洁及残羹处理设备
CN107970003A (zh) * 2017-12-12 2018-05-01 浙江帅丰电器股份有限公司 一种易于清洁的洗碗机
EP3539440B1 (fr) 2018-03-15 2022-08-03 Vestel Elektronik Sanayi ve Ticaret A.S. Système pour nettoyer d'un tuyau d'écoulement d'un appareil de lavage

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8574376B2 (en) 2004-12-23 2013-11-05 Bsh Bosch Und Siemens Hausgeraete Gmbh Water-conducting household appliance and method for the operation thereof
CN102695445A (zh) * 2009-12-31 2012-09-26 阿塞里克股份有限公司 包括微过滤器的洗碗机
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
CN103188985A (zh) * 2010-09-02 2013-07-03 Lg电子株式会社 洗碟机
US9339167B2 (en) 2010-09-02 2016-05-17 Lg Electronics Inc. Dishwasher
CN103188985B (zh) * 2010-09-02 2016-06-22 Lg电子株式会社 洗碟机
DE102011115564A1 (de) 2011-06-07 2012-12-13 Avermann Laser- und Kant-Zentrum GmbH Zerkleinerungsvorrichtung für Speise- und Lebensmittelabfälle, insbesondere im gastronomischen Bereich, sowie Verfahren zum Betreiben einer derartigen Zerkleinerungsvorrichtung
EP2532432A2 (fr) 2011-06-07 2012-12-12 Avermann Laser- und Kant-Zentrum GmbH Dispositif de broyage pour déchets alimentaires et de restes de repas, en particulier dans le domaine gastronomique, ainsi que le procédé de fonctionnement d'un tel dispositif de broyage
US9451867B2 (en) 2012-01-26 2016-09-27 Whirlpool Corporation Dishwasher and ozone generator
DE102013200164A1 (de) 2012-02-03 2013-08-08 Avermann Laser- und Kant-Zentrum GmbH Vorrichtung zur Aufbereitung von organischen Stoffen, nämlich Tiernahrung-, Speise- oder Lebensmittelabfällen und/oder Abfällen des Schlachtgewerbes unterschiedlicher Ausgangsstruktur und Konsistenz
CN108289587A (zh) * 2015-10-21 2018-07-17 伊利诺斯工具制品有限公司 器皿清洗机怠速系统和方法
DE102017125154A1 (de) 2017-06-21 2018-12-27 Avermann Laser- und Kant-Zentrum GmbH Zerkleinerungsvorrichtung für Speise- und Lebensmittelabfälle, insbesondere im gastronomischen Bereich
WO2018233879A1 (fr) 2017-06-21 2018-12-27 Avermann Laser- und Kant-Zentrum GmbH Dispositif de broyage de déchets alimentaires, en particulier dans le domaine gastronomique

Also Published As

Publication number Publication date
EP1256308A2 (fr) 2002-11-13
EP1256308A3 (fr) 2003-05-28
ATE273657T1 (de) 2004-09-15
DE60200967T2 (de) 2005-08-11
ITPN20010034A1 (it) 2002-11-08
DE60200967D1 (de) 2004-09-23

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