EP2561790B1 - Verbesserte Wasserenthärtervorrichtung - Google Patents

Verbesserte Wasserenthärtervorrichtung Download PDF

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Publication number
EP2561790B1
EP2561790B1 EP12181443.8A EP12181443A EP2561790B1 EP 2561790 B1 EP2561790 B1 EP 2561790B1 EP 12181443 A EP12181443 A EP 12181443A EP 2561790 B1 EP2561790 B1 EP 2561790B1
Authority
EP
European Patent Office
Prior art keywords
water
tank
branch
softening
valve
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.)
Active
Application number
EP12181443.8A
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English (en)
French (fr)
Other versions
EP2561790A1 (de
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
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Publication date
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Priority to PL12181443T priority Critical patent/PL2561790T3/pl
Publication of EP2561790A1 publication Critical patent/EP2561790A1/de
Application granted granted Critical
Publication of EP2561790B1 publication Critical patent/EP2561790B1/de
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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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/007—Arrangements of water softeners

Definitions

  • the present invention relates to a water-softening device for an electrical household washing machine, such as a dishwasher or a washing machine for laundry purposes.
  • a device of this kind comprises:
  • a device of this kind is described in patent application PCT WO-2005/060 817 and, owing to the presence of the aforesaid switching valve, allows the water to be directed alternatively into the first or second tank.
  • the first mode relates to the normal operation condition in which the water passes through the water-softening substances and is thus softened in such a way that it can then be directed into the washing chamber of the household appliance without causing harmful incrustations or the like.
  • the second mode relates to the step of regeneration which must be carried out periodically in order to reactivate the water-softening substances.
  • the brine formed in the second tank is subsequently made to pass through the water-softening substances, typically ion-exchange resins, contained in the first tank, which are thus regenerated.
  • EP-1 844 693 describes a water-softening device of the general type described above, which is provided with a switching and mixing valve, instead of a switching valve, as a result of which the flow passing through the first branch of the supply line and directed towards the tank containing the water-softening substances is never shut off.
  • a valve of the switching and mixing type is intrinsically more noisy and less robust than a switching valve.
  • the object of the present invention is to provide an improved water-softening device, particularly a device free of the drawbacks mentioned above.
  • this object is achieved by means of a device of the type mentioned at the start of the present description, characterized in that the aforesaid switching valve further comprises a passage which puts into communication said water supply line and said first branch, independently of the position of the shutter, and in particular independently of whether or not the shutter closes the aperture of the valve seat which forms the inlet of the first branch.
  • the device according to the invention does not require a tank for collecting the water to be supplied to the salt containing tank. At the same time, because of the presence of the passage, the flow within the first branch of the supply line towards the tank containing the water-softening substance is not shut off in any operating configuration of the valve. Therefore, even if the inlet and/or outlet openings of the salt-containing tank become obstructed, the water supplied to the device can still flow out of it without creating harmful excess pressures.
  • the regeneration step is carried out by supplying both mains water and brine simultaneously to the tank for containing the water-softening substances.
  • the brine is thus diluted, with the advantage that it is less aggressive in relation to the water-softening substances.
  • the device according to the invention is also advantageous by comparison with that described in the further prior document EP-1 844 693 . This is because it uses a switching valve which is less noisy and more robust than a valve of the switching and mixing type. Furthermore, in the device according to the invention the ratio between the amounts of flow in the two branches is determined in a more precise way, since it depends on the apertures of the passage and of the valve seat, which are fixed and not dependent on the positioning of a movable member such as a shutter, which is intrinsically subject to inaccuracies.
  • a further object of the present invention is an electrical household washing machine comprising a water-softening device of the type described above.
  • a water-softening device for an electrical household washing machine includes ( Figs. 1 and 2 ) a supply line 10 which has an upstream portion in which a filling valve 12 and a flow gauge 14 are fitted, and which has a subsequent air head portion 16. Downstream of the latter, the line 10 has a branch-off point 18 into a first and a second branch 20, 22.
  • the device further comprises a first tank 24 for containing substances with water-softening properties, having an inlet opening 26 for water to be softened and an outlet opening 28 for softened water, and a second salt-containing tank 30, having a water inlet opening 32 and an outlet opening 34 for a regenerating brine formed following the dissolution of the salt in the water.
  • a line 36 on which a one-way valve 37 is positioned, connects the second tank 30 to the first tank 24 so that the brine formed in the second tank 30 can flow out towards the first tank 24.
  • the first branch 20 of the supply line 10 opens into the inlet opening 26 of the first tank 24, while the second branch 22 opens into the inlet opening 32 of the second tank 30.
  • a switching valve 38 is located at the branch-off point 18.
  • the valve has a shutter 39 adapted to cause the water to flow into the first branch 20 or the second branch 22, by closing the free aperture of one or other of the valve seats 40a, 40b which forms the inlet of the branch 20, 22 respectively.
  • the valve 38 further comprises a supplementary passage 42 which puts into constant communication the water supply line 10 and the first branch 20 independently of the position of the shutter 39.
  • the shutter 39 of the valve 38 assumes a first operating configuration in which it blocks the outflow from the supply line 10 towards the second branch 22, by closing the aperture of the seat 40b, while it allows the flow into the first branch 20 towards the first tank 24 through the aperture of the seat 40a.
  • all of the water flowing in the line 10 is directed, through the aperture of the seat 40a or the passage 42, directly into the first branch 20 and then into the first tank 24, where it is softened (see the path 44).
  • the shutter 39 of the valve 38 assumes a second operating configuration in which it allows the outflow from the supply line 10 towards the second branch 22, by closing the aperture of the seat 40a and leaving open the aperture of the seat 40b.
  • the water supplied to the second branch 22 is directed into the second tank 30, where it forms a brine which, when it subsequently passes through the first tank 24 (see path 46), regenerates the water-softening substances.
  • the ratio between the water flows in the first and second branches 20, 22 depends on the apertures of the passage 42 and of the seats 40a, 40b, in other words on fixed geometrical quantities which can be provided with very high precision and low tolerances, thus ensuring highly precise operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Massaging Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Multiple-Way Valves (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (3)

  1. Wasserenthärtungsvorrichtung für elektrische Haushaltsgeräte, umfassend:
    - einen ersten Behälter (24), um Substanzen mit wasserenthärtenden Eigenschaften zu enthalten, welcher wenigstens eine Einlassöffnung (26) für zu enthärtendes Wasser und eine Auslassöffnung (28) für enthärtetes Wasser aufweist,
    - einen zweiten Salz enthaltenden Behälter (30), welcher wenigstens eine Wassereinlassöffnung (32) und eine Auslassöffnung (34) für eine regenerierende Sole, die sich beim Lösen des Salzes in dem Wasser bildet, aufweist,
    - eine Leitung (36), welche den zweiten Behälter (30) mit dem ersten Behälter (24) verbindet, so dass die in dem zweiten Behälter (30) gebildete Sole in Richtung des ersten Behälters (24) ausfließen kann,
    - eine Wasserversorgungsleitung (10), welche einen Verzweigungspunkt (18) in einen ersten Zweig (20), der den ersten Behälter (24) versorgt, und in einen zweiten Zweig (22), der zu der Einlassöffnung (32) des zweiten Behälters (30) führt, aufweist, und
    - ein Umschaltventil (38) mit einem Schieber, welches dazu eingerichtet ist, zu bewirken, dass Wasser in den ersten oder zweiten Zweig (20, 22) strömt,
    wobei die Vorrichtung dadurch gekennzeichnet ist, dass das Ventil (38) ferner einen Durchgang (42) umfasst, welcher die Wasserversorgungsleitung (10) und den ersten Zweig (20) unabhängig von der Lage des Schiebers in Kommunikation bringt.
  2. Vorrichtung nach Anspruch 1, wobei das Verhältnis zwischen den Wasserströmungen in dem ersten und zweiten Zweig (20, 22) von den Öffnungen des Durchgangs (42) und der Ventilsitze (40a, 40b), mit welchen der Schieber (39) zusammenwirkt, abhängt.
  3. Elektrisches Haushaltswaschgerät, umfassend eine Wasserenthärtungsvorrichtung nach einem der vorhergehenden Ansprüche.
EP12181443.8A 2011-08-25 2012-08-23 Verbesserte Wasserenthärtervorrichtung Active EP2561790B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12181443T PL2561790T3 (pl) 2011-08-25 2012-08-23 Ulepszone urządzenie do zmiękczania wody

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000775A ITTO20110775A1 (it) 2011-08-25 2011-08-25 Dispositivo decalcificatore perfezionato

Publications (2)

Publication Number Publication Date
EP2561790A1 EP2561790A1 (de) 2013-02-27
EP2561790B1 true EP2561790B1 (de) 2014-12-24

Family

ID=44899187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12181443.8A Active EP2561790B1 (de) 2011-08-25 2012-08-23 Verbesserte Wasserenthärtervorrichtung

Country Status (5)

Country Link
EP (1) EP2561790B1 (de)
CN (1) CN102976500B (de)
ES (1) ES2533302T3 (de)
IT (1) ITTO20110775A1 (de)
PL (1) PL2561790T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10646098B2 (en) 2015-06-19 2020-05-12 Bitron S.P.A. Integrated component for a dishwashing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20130339A1 (it) 2013-04-24 2014-10-25 Bitron Spa Sistema di alimentazione e trattamento di acqua per una macchina lavastoviglie
ITTO20130338A1 (it) * 2013-04-24 2014-10-25 Bitron Spa Sistema di alimentazione e trattamento di acqua per una macchina lavatrice, in particolare una macchina lavastoviglie
DE202015007584U1 (de) 2014-11-03 2016-02-15 Bitron S.P.A. Verbesserter Wasserenthärtungskreislauf für ein Wasserbearbeitungssystem für eine Waschmaschine/Geschirrspüler und eine Maschine hierfür
EP3216909A1 (de) * 2016-03-11 2017-09-13 Electrolux Appliances Aktiebolag Heimwäschebehandlungsmaschine und verfahren zur steuerung derselben
CN108529718A (zh) * 2017-03-02 2018-09-14 三花亚威科电器设备（芜湖）有限公司 水软化装置
IT201900010461A1 (it) * 2019-06-28 2020-12-28 Tp Reflex Group Spa Sistema per abbattere il grado di durezza dell’acqua di lavaggio in una macchina di lavaggio, in particolare una lavastoviglie, e relativo metodo

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8511185U1 (de) * 1985-04-16 1985-05-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Haushalt-Geschirrspülmaschine
DE3710511C2 (de) * 1987-03-30 1995-12-21 Bauknecht Hausgeraete Einrichtung zum Regeln der Salzmengenzufuhr beim Regenerieren von Wasserenthärtungsanlagen, insbesondere für Geschirrspüler
CN2536575Y (zh) * 2002-03-05 2003-02-19 广东美的集团股份有限公司 一种家用洗碗机的水质软化装置
JP4052903B2 (ja) * 2002-08-28 2008-02-27 シャープ株式会社 食器洗い乾燥機
DE102004019330A1 (de) * 2003-12-22 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einem System zur Wasserenthärtung
EP1701647B1 (de) * 2003-12-22 2012-05-23 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einem system zur wasserenthärtung
ITTO20060165A1 (it) * 2006-03-07 2007-09-08 Bitron Spa Dispositivo perfezionato di alimentazione e trattamento di acqua per macchina lavastoviglie.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10646098B2 (en) 2015-06-19 2020-05-12 Bitron S.P.A. Integrated component for a dishwashing machine

Also Published As

Publication number Publication date
ITTO20110775A1 (it) 2013-02-26
CN102976500A (zh) 2013-03-20
EP2561790A1 (de) 2013-02-27
ES2533302T3 (es) 2015-04-09
CN102976500B (zh) 2016-01-20
PL2561790T3 (pl) 2015-06-30

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