EP1371319B1 - Lave-vaisselle avec cuve de lavage divisible en deux secteurs - Google Patents

Lave-vaisselle avec cuve de lavage divisible en deux secteurs Download PDF

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Publication number
EP1371319B1
EP1371319B1 EP02425374A EP02425374A EP1371319B1 EP 1371319 B1 EP1371319 B1 EP 1371319B1 EP 02425374 A EP02425374 A EP 02425374A EP 02425374 A EP02425374 A EP 02425374A EP 1371319 B1 EP1371319 B1 EP 1371319B1
Authority
EP
European Patent Office
Prior art keywords
water
sectors
dishwasher according
sector
tank
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
EP02425374A
Other languages
German (de)
English (en)
Other versions
EP1371319A1 (fr
Inventor
Ezio Gobbi
Franco Balestrazzi
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
Application filed by Bonferraro SpA filed Critical Bonferraro SpA
Priority to ES02425374T priority Critical patent/ES2214468T3/es
Priority to AT02425374T priority patent/ATE259620T1/de
Priority to EP02425374A priority patent/EP1371319B1/fr
Priority to DE60200222T priority patent/DE60200222T2/de
Publication of EP1371319A1 publication Critical patent/EP1371319A1/fr
Application granted granted Critical
Publication of EP1371319B1 publication Critical patent/EP1371319B1/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
    • A47L15/4251—Details of the casing
    • 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
    • A47L15/4246—Details of the tub
    • A47L15/4248—Arrangements for dividing the tub compartment, e.g. for simultaneous washing of delicate and normal crockery

Definitions

  • the present invention relates to dishwashing machines, and in particular to a dishwasher for domestic use provided with means for dividing the washing tank into two sectors which can be used separately.
  • a dishwasher of this type is for example disclosed in DE 7105474U.
  • dishwashers for domestic use are provided with various arrangements for adapting them to the number and type of dishes to be washed, such as the setting of low-temperature, or energy-recovery, cycles or the feeding of one sprinkler only and so on. Regardless of the adopted solution, in known dishwashers the washing affects the whole tank and therefore the whole structure of the machine is heated through the contact with hot water.
  • the actual energy saving with respect to the conventional full load operation does not exceed 20%.
  • the object of the present invention is to provide a dishwasher which overcomes the above-mentioned drawbacks.
  • the main advantage of the dishwasher according to the present invention is exactly that of being able to achieve a total operating differentiation between the two sectors, each of which can operate according to its own cycle with specific parameters of temperature, duration and type of detergent even in different moments with respect to the other sector.
  • a second significant advantage of this dishwasher is that it can actually operate at half load, heating only half of the machine with an energy saving close to 50%.
  • a further advantage of this type of machine stems from the fact that when the tank is undivided and the operation is conventional it still achieves better washing results thanks to the plurality of sprinklers and filters.
  • a dishwasher conventionally includes a plurality of known elements: an electrovalve W controlling the entrance of water from the network, a meter F which measures the amount of water entering the machine, a unit for softening the water by means of decalcifying resins located in a container R", which includes a chamber A for the collection of water intended for the regeneration of said resins by means of a sodium chloride solution which is formed in a salt container S connected to container R" through an electrovalve VR, and a drain duct D.
  • the novel aspect of the present dishwasher consists of a horizontally extending washing tank with two racks R, R' side by side rather than one on top of the other, and a removable central dividing baffle S which performs the division of the tank into two independent sectors T, T'.
  • each of the two sectors there are provided all the elements required for the individual operation: a collecting sump from which the water reaches a wash pump WP and WP' and a drain pump DP and DP', a heating resistor H and H', a bottom sprinkler L and L' and a top sprinkler U and U'.
  • the feeding of the water coming from the common softening unit takes place through a deviating valve VD which directs the water to the respective supply ducts, and similarly the draining takes place through a connector Y which converges the drain ducts of the two sectors into the common drain duct D.
  • baffle S it would be possible to use a single rack, having a width equal to the tank width, which is capable of receiving particularly large dishes, i.e. having a side longer than 60 cm, which can not presently be washed in the domestic dishwashers available on the market.
  • the fact of having two smaller collecting sumps allows to provide the maximum filtering effectiveness and to optimize the used amount of water.
  • the two separate filters have a combined filtering surface greater than that of the single filter of a conventional dishwasher, and the smaller area of each sump allows for a greater inclination of the bottom which favours the flowing of the water towards the filter and therefore allows for a greater useful height of the sump.
  • the dishwasher door is preferably one but provided with two detergent/rinse aid distributors, one for each sector, so as to introduce the products only in the distributor corresponding to the sector to be used. It is clear that if the two sectors operate simultaneously according to the same cycle, regardless of the presence of baffle S, the detergent should be divided between the two distributors but this not being the case there is also provided a connection system (described further on) which assures a uniform distribution thereof.
  • the dividing baffle S is designed so as to assure along the four sides a sufficient water tightness, but in order to make easier its introduction and removal into and from the tank there is not provided a forced coupling. In fact even possible leakages from one sector to the other in case of separate operation are not a problem, and upon the final drain of the cycle also the drain pump of the inoperative sector is activated for some seconds to drain out said possible leakages.
  • a sensor for detecting the presence of baffle S which can be made in various known ways such as a microswitch in a vertical baffle seat, or a magnet mounted on the baffle which activates a reed sensor mounted on the tank or on the door.
  • the microprocessor will not accept the setting of separate cycles in the absence of baffle S and will give a relevant indication to the user, e.g. by lighting up a symbol on the display.
  • connection system between the two sectors T, T' which allows to automatically adjust the water level between the two sumps in case of simultaneous operation.
  • the element which performs the connection is a four-way manifold C, substantially shaped as a flattened X, which receives water from the wash pumps WP and WP' through respective ducts N, N' in which the flow is controlled by respective valves V, V'.
  • Manifold C also mutually connects the two sumps through respective ducts M, M' for the equalization of the water through the communicating vessels principle.
  • ducts M, M' can be separated by a central valve VC, whose opening is controlled by a thermoactuator TA same as valves V, V'.
  • a thermoactuator TA same as valves V, V'.
  • all the valves of manifold C are normally in the closed position, under the action of a spring, and their opening must be ordered by the microprocessor by activating the relevant thermoactuator.
  • valve VC open, so as to connect the two sectors, and with valves V, V' which are open during the water load step and the first minutes of the cycle whereas they remain closed in the subsequent steps.
  • valves V, V' causes the passage in ducts M, M' of pressurized water coming from pumps WP, WP' thus achieving the cleaning of said ducts from possible residues which may settle down when the water flows from one sump to the other during the operating cycle.
  • the microprocessor can take into account possible differences in performance between one sector and the other and carry out slight changes of the cycle in order to "realign" the two sectors.
  • the duration of the activation of resistors H, H' is controlled by respective temperature sensors but it may occur that in one of the two sectors the desired temperature is reached before than in the other sector, due to a different calibration of the sensors, or to a power difference in the resistor or to the type and amount of dishes present in the respective rack or to any combination of these factors.
  • the microprocessor provides an extension of the activation time of the wash pump of the sector which is "early" in order to obtain thereafter a simultaneous drain.
  • the presence of the two resistors H, H' can be advantageous also to achieve short washing cycles since it can be provided to select (e.g. via software) a series connection thereof for normal use, or a parallel connection to double the power and decrease the water heating time.

Claims (10)

  1. Lave-vaisselle comprenant une électrovalve (W) commandant l'entrée d'eau à partir du réseau, une unité d'adoucissement d'eau, une cuve de lavage, un conduit de drainage (D) et un microprocesseur, ladite cuve de lavage comprenant deux étagères (R, R') arrangées côte à côte et un déflecteur diviseur central amovible (S) qui réalise la division de la cuve en deux secteurs indépendants (T, T') dont chacun est pourvu d'une citerne de collecte avec un filtre approprié à partir de laquelle l'eau atteint une pompe de lavage (WP ; WP') et une pompe de drainage (DP ; DP'), une résistance de chauffage (H ; H'), un distributeur de détergent et au moins un gicleur, caractérisé en ce que l'alimentation de l'eau venant de ladite unité d'adoucissement a lieu à travers une valve de déviation (VD) qui dirige l'eau vers les conduits d'alimentation respectifs desdits secteurs (T, T'), le drainage étant réalisé à travers un connecteur (Y) qui fait converger les conduits de drainage des deux secteurs (T, T') dans ledit conduit de drainage (D), et en ce qu'un collecteur à quatre voies (C) est prévu, ledit collecteur recevant l'eau issue desdites pompes de lavage (WP ; WP') à travers des conduits respectifs (N, N') dans lesquels l'écoulement est commandé par des valves respectives (V ; V'), et ledit collecteur (C) connectant également mutuellement les deux citernes à travers des conduits respectifs (M, M') qui sont séparés par une valve centrale (VC) du collecteur (C).
  2. Lave-vaisselle selon la revendication 1, caractérisé en ce que chaque secteur (T, T') comprend un gicleur supérieur (U ; U') et un gicleur inférieur (L ; L').
  3. Lave-vaisselle selon la revendication 1 ou 2, caractérisé en ce que les valves (V, V', VC) du collecteur (C) sont normalement maintenues en position fermée par un ressort et chacune d'elle est commandée pour s'ouvrir par un thermo-actionneur respectif (TA) commandé par le microprocesseur.
  4. Lave-vaisselle selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la cuve de lavage est fermée par une seule porte pourvue de deux distributeurs de détergent/aide au rinçage, un pour chaque secteur (T, T').
  5. Lave-vaisselle selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que chaque secteur (T, T') est fermé par une porte respective pourvue d'un distributeur de détergent/aide au rinçage.
  6. Lave-vaisselle selon la revendication 5, caractérisé en ce que les deux portes peuvent être connectées mutuellement.
  7. Lave-vaisselle selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le déflecteur diviseur (S) est monté dans la cuve par un couplage approprié pour assurer le long des quatre côtés une étanchéité à l'eau adéquate tout en permettant une introduction et un retrait aisés de celui-ci.
  8. Lave-vaisselle selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend un capteur pour détecter la présence du déflecteur diviseur (S).
  9. Lave-vaisselle selon la revendication 8, caractérisé en ce que le capteur pour détecter la présence du déflecteur (S) comprend un aimant monté sur le déflecteur (S) de manière à activer un capteur à contact monté dans la cuve ou sur la porte.
  10. Lave-vaisselle selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend des moyens pour connecter sélectivement les résistances de chauffage (H, H') en série ou en parallèle.
EP02425374A 2002-06-07 2002-06-07 Lave-vaisselle avec cuve de lavage divisible en deux secteurs Expired - Lifetime EP1371319B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES02425374T ES2214468T3 (es) 2002-06-07 2002-06-07 Lavavajillas con deposito de lavado divisible en dos sectores.
AT02425374T ATE259620T1 (de) 2002-06-07 2002-06-07 Geschirrspülmaschine mit in zwei teile teilbarem spülbehälter
EP02425374A EP1371319B1 (fr) 2002-06-07 2002-06-07 Lave-vaisselle avec cuve de lavage divisible en deux secteurs
DE60200222T DE60200222T2 (de) 2002-06-07 2002-06-07 Geschirrspülmaschine mit in zwei Teile teilbarem Spülbehälter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425374A EP1371319B1 (fr) 2002-06-07 2002-06-07 Lave-vaisselle avec cuve de lavage divisible en deux secteurs

Publications (2)

Publication Number Publication Date
EP1371319A1 EP1371319A1 (fr) 2003-12-17
EP1371319B1 true EP1371319B1 (fr) 2004-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425374A Expired - Lifetime EP1371319B1 (fr) 2002-06-07 2002-06-07 Lave-vaisselle avec cuve de lavage divisible en deux secteurs

Country Status (4)

Country Link
EP (1) EP1371319B1 (fr)
AT (1) ATE259620T1 (fr)
DE (1) DE60200222T2 (fr)
ES (1) ES2214468T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150000268A (ko) * 2013-06-24 2015-01-02 삼성전자주식회사 식기세척기
US8932411B2 (en) 2010-08-06 2015-01-13 Whirlpool Corporation Method for controlling zonal washing in a dishwasher

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20040157U1 (it) * 2004-04-09 2004-07-09 Bonferraro Spa Lavastoviglie con vasca di lavaggio divisa in due settori
ES2265632T3 (es) * 2004-04-26 2007-02-16 Bonferraro S.P.A. Lavavajillas de doble deposito con circuito de interconexion hidraulica.
DE102009003012A1 (de) * 2009-05-11 2010-12-23 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit mehreren Modulen
US9265398B2 (en) * 2010-03-08 2016-02-23 Whirlpool Corporation Dishwasher with separate sump for concentrated fluid supply
US9743821B2 (en) 2012-04-16 2017-08-29 Whirlpool Corporation Dispenser for multi-compartment dishwasher
DE202015000655U1 (de) * 2015-01-29 2016-05-02 Erich Bartholomé Geschirrspülmaschinenvorrichtung
WO2020078035A1 (fr) * 2018-10-16 2020-04-23 佛山市顺德区美的洗涤电器制造有限公司 Lave-vaisselle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7105474U (de) * 1971-08-19 Brueggemann H Automatische Geschirrspulvornchtung, insbesondere fur Haushaltszwecke
DE3337369A1 (de) * 1983-10-14 1985-04-25 Jakobus Janhsen Geschirrspuelmaschine
KR940009563B1 (ko) * 1992-09-04 1994-10-15 대우전자주식회사 식기 세척기
WO1999008810A1 (fr) * 1997-08-16 1999-02-25 Baljit Singh Lave-vaisselle incorpore a un evier
US6289908B1 (en) * 1999-12-01 2001-09-18 Marjorie K. Kelsey Double dishwasher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8932411B2 (en) 2010-08-06 2015-01-13 Whirlpool Corporation Method for controlling zonal washing in a dishwasher
KR20150000268A (ko) * 2013-06-24 2015-01-02 삼성전자주식회사 식기세척기

Also Published As

Publication number Publication date
DE60200222T2 (de) 2004-12-09
ATE259620T1 (de) 2004-03-15
ES2214468T3 (es) 2004-09-16
EP1371319A1 (fr) 2003-12-17
DE60200222D1 (de) 2004-03-25

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