EP0575837B1 - Machine à laver la vaisselle - Google Patents

Machine à laver la vaisselle Download PDF

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Publication number
EP0575837B1
EP0575837B1 EP93109380A EP93109380A EP0575837B1 EP 0575837 B1 EP0575837 B1 EP 0575837B1 EP 93109380 A EP93109380 A EP 93109380A EP 93109380 A EP93109380 A EP 93109380A EP 0575837 B1 EP0575837 B1 EP 0575837B1
Authority
EP
European Patent Office
Prior art keywords
substance
chamber
water
washing tank
waste pipe
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
EP93109380A
Other languages
German (de)
English (en)
Other versions
EP0575837A1 (fr
Inventor
Enzo Brignone
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.)
Bitron SpA
Original Assignee
Bitron 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 Bitron SpA filed Critical Bitron SpA
Publication of EP0575837A1 publication Critical patent/EP0575837A1/fr
Application granted granted Critical
Publication of EP0575837B1 publication Critical patent/EP0575837B1/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
    • A47L15/4229—Water softening arrangements

Definitions

  • the present invention relates to a domestic electric appliance, in particular a dishwasher, including:
  • a domestic electric appliance of the type described above is known from British patent application No. 2210256.
  • the chamber for receiving the used brine and the water used for rinsing the substance with decalcifying properties is disposed hydraulically upstream of the washing tank and is connected to the lower portion thereof, which is known as the sump.
  • the used brine and the rinsing water can thus be discharged to the sump and are then conveyed into the general waste pipe of the domestic electric appliance.
  • the sump Since the used brine has corrosive properties, the sump has to be made of plastics material, unlike the other parts of the washing tank which are made of metal.
  • the subject of the present invention is a domestic electric appliance of the type indicated above, further comprising the features specified in the characterizing portion of claim 1.
  • the used brine and the water used to rinse the substance with decalcifying properties flow from the chamber into the general waste pipe of the domestic electric appliance downstream of the washing tank, preventing corrosion problems from arising therein.
  • an air break chamber is indicated 10
  • a container for a substance with decalcifying properties for example, an ion-exchange resin
  • a salt reservoir is indicated 14
  • a metering chamber is indicated 16
  • a washing tank is indicated 18
  • a chamber for receiving used brine is indicated 20
  • an electric pump positioned in a general waste pipe 24 of the domestic electric appliance is indicated 22.
  • the water supplied from the duct 26 flows firstly into the tank 10 and most of it is then sent into the ion-exchange resin container 12 where it is decalcified.
  • the decalcified water is then admitted to the metering chamber 16 and then to the tank 18 from which, upon completion of the washing cycle, it is discharged through the waste pipe 24 in which the electric pump 22 is disposed.
  • the rest of the water supplied is sent from the tank 10 to the salt reservoir 14, where it forms a brine which is passed through the ion-exchange resin container 12 so as to regenerate the resin after it has been used to soften the water to be sent to the metering chamber 16.
  • Any residues of saline substances or calcareous deposits are then rinsed from the ion-exchange resin container 12 by a further flow of rinsing water from the tank 10.
  • the used brine and rinsing water are drained into the chamber 20, the outlet duct 28 of which joins the general waste pipe 24 of the domestic electric appliance downstream of the washing tank 18 so that the chamber 20 is disposed hydraulically in parallel therewith.
  • the outlet duct 28 of the chamber 20 may join the general waste pipe 24 either upstream of the electric pump 22 (as shown in Figure 1) or downstream of the electric pump 22 (as shown in Figure 2).
  • the chamber 20 may be emptied, for example, by gravity.
  • the portion of the general waste pipe 24 including the point at which it joins the outlet duct 28 of the chamber 20 may be shaped like a Venturi tube. In this case, the flow of liquid through this portion generates a vacuum which sucks the liquid out of the chamber 20, even if it is positioned below the general waste pipe 24.

Landscapes

  • Detergent Compositions (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (1)

  1. Appareil ménager électrique, en particulier un lave-vaisselle, comprenant :
    - une cuve de lavage (18),
    - un conteneur (12) pour une substance ayant des propriétés décalcifiantes, à travers lequel l'eau à fournir à la cuve de lavage (18) doit s'écouler préalablement,
    - un réservoir (14) pour contenir une substance saline, à travers lequel l'eau doit s'écouler de façon à dissoudre la substance saline et à former une saumure pour régénérer la substance ayant des propriétés décalcifiantes,
    - une pompe (22), et
    - une chambre (20) pour recevoir la saumure usée qui s'est écoulée à travers le conteneur pour la substance ayant des propriétés décalcifiantes et/ou l'eau utilisée pour rincer la substance ayant des propriétés décalcifiantes,
       caractérisé en ce que ladite chambre (20) est disposée parallèlement, d'un point de vue hydraulique, à la cuve de lavage (18),
       ladite pompe (22) est appropriée pour amener l'évacuation du contenu de la chambre (20) dans un tuyau général d'eaux usées (24), et
       la partie du tuyau général d'eaux usées (24), comprenant le point au niveau duquel elle rejoint la conduite de sortie (28) de la chambre (20), a une forme de tube de Venturi.
EP93109380A 1992-06-22 1993-06-11 Machine à laver la vaisselle Expired - Lifetime EP0575837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO920530 1992-06-22
ITTO920530A IT1259587B (it) 1992-06-22 1992-06-22 Apparecchio elettrodomestico.

Publications (2)

Publication Number Publication Date
EP0575837A1 EP0575837A1 (fr) 1993-12-29
EP0575837B1 true EP0575837B1 (fr) 1996-11-27

Family

ID=11410551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109380A Expired - Lifetime EP0575837B1 (fr) 1992-06-22 1993-06-11 Machine à laver la vaisselle

Country Status (4)

Country Link
EP (1) EP0575837B1 (fr)
DE (1) DE69306177T2 (fr)
ES (1) ES2094964T3 (fr)
IT (1) IT1259587B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413432C1 (de) * 1994-04-18 1995-08-31 Bauknecht Hausgeraete Programmgesteuerte Geschirrspülmaschine
DE19645274A1 (de) * 1996-11-02 1998-05-07 Miele & Cie Verfahren zum Regenerieren des Ionenaustauschers einer Enthärtungseinrichtung einer programmgesteuerten Geschirrspülmaschine, sowie Geschirrspülmaschine zur Durchführung des Verfahrens
IT1288831B1 (it) * 1996-11-15 1998-09-24 Bitron Spa Dispositivo decalcificatore perfezionato
IT1294124B1 (it) * 1997-04-23 1999-03-22 Electrolux Zanussi Elettrodome Macchina lavatrice automatica con sistema di rigenerazione di mezzi addolcitori d'acqua
DE19934954A1 (de) * 1999-07-26 2001-02-01 Aweco Appliance Sys Gmbh & Co Haushaltsmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH468504A (de) * 1966-10-06 1969-02-15 Licentia Gmbh Verfahren zum Betreiben einer Waschmaschine
BE807973A (fr) * 1973-11-29 1974-03-15 Solvay Machine a laver
DE3527182A1 (de) * 1985-07-30 1987-02-12 Licentia Gmbh Programmgesteuerte wasch- oder geschirrspuelmaschine

Also Published As

Publication number Publication date
EP0575837A1 (fr) 1993-12-29
IT1259587B (it) 1996-03-20
ITTO920530A1 (it) 1993-12-22
ITTO920530A0 (it) 1992-06-22
DE69306177D1 (de) 1997-01-09
DE69306177T2 (de) 1997-03-20
ES2094964T3 (es) 1997-02-01

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