EP0425815B1 - Machine à laver améliorée - Google Patents
Machine à laver améliorée Download PDFInfo
- Publication number
- EP0425815B1 EP0425815B1 EP90118538A EP90118538A EP0425815B1 EP 0425815 B1 EP0425815 B1 EP 0425815B1 EP 90118538 A EP90118538 A EP 90118538A EP 90118538 A EP90118538 A EP 90118538A EP 0425815 B1 EP0425815 B1 EP 0425815B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- hardness
- washing
- washing machine
- machine
- 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
Links
Images
Classifications
-
- 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
-
- 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 refers to a washing machine, particularly a domestic laundry- or dish-washer, comprising means which reduces the hardness of the water supplied to the machine and at least a hardness sensor device for said water.
- the quantity of detergent to use in a given type of washing directly depends on the hardness of the water which is used for the washing itself. In fact, if the detergent quantity is insufficient, the calcium (Ca++) and magnesium (Mg++) ions, responsible for the water hardness, neutralize the surface-active part of the detergent, which has the principal function in the washing action, so that the washing results to be unsatisfactory.
- washing machines In order to act on the water hardness, reducing it to medium levels and not to oblige the user to change the detergent dosages, some washing machines use specific artifices; particularly, dishwashers have a softening device for the washing and rinsing water, which exchanges the Ca++ and Mg++ ions of the water with the sodium (Na+) ion, contained in appropriate resins arranged into the softnening device, and not impairing the action of the detergent or the aspect of the washed items.
- Some laundry machines use an agent, which is usually contained in the detergent, which can reduce the water hardness and which operates according to its concentration during the use.
- the document DE-A-1 642 488 discloses a laundry- or dish-washer comprising means which reduces the hardness of the water supplied to the machine and at least a hardness sensor device in order to determine the regeneration time.
- the subject of the present invention is a washing machine, particularly a domestic laundry- or dish-washer, comprising means which reduces the hardness of the water supplied to the machine and at least a hardness sensor device for said water, characterized in that there are provided control means which, at least during a washing cycle, activate the means which reduces the water hardness in function of the result of the measuring effected by the sensor device.
- a dishwashing machine showing the supply hydraulic system for the washing; it comprises a connection to the water mains 1 which supplies the running water to a softener 2.
- the resin in the softener 2 exchanges its Na+ ions with the Ca++ and Mg++ ions of the water.
- the softened water is analysed by a sensor 3, of known type, which verifies the good operation of said softener 2.
- the results obtained from the analisys are then collected by a programmer (timer) 4 which can transform them into signals recognizable by the user or by the machine itself.
- these signals allow, the user to verify istantaneously the hardness of the softened water, necessary for the washing and/or the rinse of the dishes; in this way it will be possible to do the ions regenerating phase only when these ones have lost their exchange capability, and not during any cycle.
- the water hardness levels detected instantaneously and which correspond to the resin consumption, are memorized and integrated by means of digital or analogic means, and if a predetermined threshold is exceeded, the latter informs the programmer in order to to enable the regeneration.
- the water analysed in this way is then supplied to the washing tank 5 by means of the hydraulic pump 6 which conveys it to the rotating collectors 7.
- Figure 2 shows a variant of the dishwashing machine of figure 1, where said sensor 3, measuring the water hardness, is arranged upstream the softener 2, in respect of the direction of the water flow.
- the timer or the user have the possibility to know how much the resin is used, and to operate a regeneration with the quantity of solution strictly necessary to restore the resin to the initial conditions.
- the information of the analysis is collected by the programmer 4 which, by means of automatic means or signallers recognizable by the user, commands the execution of the regeneration.
- Figure 3 shows a further variant of the figures 1 and 2; it consists in the use of two sensors 3a and 3b or, in alternative, only a sensor which performs two analysis of the water, respectively upstream and downstream the softener. In this way it is possible to control completely the operating condition of the resin, and to realize an optimal regeneration.
- the hardness of the water supplied from the mains is analysed by means of the sensor 3a, and the water treated by the resin is analized by means of the sensor 3b, so having istantaneously, on the basis of these results, the value of the correct operation of the softener.
- the operation of the softening device is optimized, with the consequent reduction of the consumption of the salt (NaCl) used to obtain the necessary solution for the regenerating phase; a lesser pollution is obtained because a salt which is not completely used is never discharged, like it happens in the case of the known machines; the user can refill the salt container of the softener with intervals longer than in the known embodiments; the regeneration of the resin is done automatically, after a control of the information supplied by the sensors, which inform the timer about the exceeding of a hardness threshold.
- the salt NaCl
- the water hardness sensor which analyses the water during each supplying of the machine, measures its hardness, which can change depending on the season and the weather conditions, and for this reason it conditions the machine operation so to optimize it; this fact is not possible with the devices controlled by a machine or by an user which do not know istantaneously the hardness of the water used for the washing and/or the rinsing.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Claims (11)
- Machine à laver, en particulier lave-linge ou lave-vaisselle domestique, comprenant un dispositif qui réduit la dureté de l'eau fournie à la machine et au moins un dispositif détecteur de dureté pour ladite eau, caractériseé en ce qu'il est prévu des dispositifs de commande qui, au moins pendant un cycle de lavage, activent le dispositif qui réduit la dureté de l'eau en fonction du résultat de la mesure réalisée par le dispositif détecteur (3).
- Machine à laver selon la revendication 1, caractérisée en ce qu'il est prévu des dispositifs analogiques, numériques ou optiques qui intègrent le résultat de la mesure réalisée par le dispositif détecteur (3).
- Machine à laver selon la revendication 1 ou 2, caractérisée en ce qu'il est prévu des dispositifs détecteurs de seuil qui provoquent l'activation du dispositif qui réduit la dureté de l'eau lorsque le seuil est franchi.
- Machine à laver selon la revendication 3, caractérisée en ce que lesdits dispositifs détecteurs de seuil sont remis à zéro lorsque le seuil est franchi.
- Machine à laver selon l'une des revendications précédentes, caractérisée en ce que lesdits dispositifs de commande informent automatiquement et instantanément l'utilisateur du résultat de la mesure de la dureté de l'eau par activation d'éléments indicateurs.
- Machine à laver selon la revendication 5, caractérisée en ce que lesdits dispositifs de commande sont disposés à l'intérieur de l'horloge de lavage (4).
- Machine à laver selon la revendication 6, caractérisée en ce que le dispositif détecteur (3) analyse la dureté de l'eau provenant de la conduite d'eau principale (1) et qui doit être fournie dans les cycles de lavage.
- Machine à laver selon la revendication 7, caractérisée en ce que l'eau fournie par la conduite d'eau principale contourne le dispositif qui réduit la dureté si ladite eau fournie par la conduite d'eau principale (1) est analysée comme étant douce par ledit détecteur (3).
- Machine à laver selon la revendication 6, caractérisée en ce que le dispositif détecteur (3) analyse l'eau après un processus de réduction de la dureté de l'eau.
- Machine à laver selon les revendications 7 et 9, caractérisée en ce qu'un ou plusieurs détecteurs (3a, 3b) analysent l'eau avant et après le processus de réduction de la dureté.
- Machine à laver selon l'une quelconque des revendications précédentes, caractérisée en ce que le processus de réduction de la dureté de l'eau est accompli par un adoucisseur (2) ou par des agents chimiques de lavage introduits dans la machine à laver.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT6781989 | 1989-09-29 | ||
IT8967819A IT1232595B (it) | 1989-09-29 | 1989-09-29 | Macchina di lavaggio perfezionata |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0425815A2 EP0425815A2 (fr) | 1991-05-08 |
EP0425815A3 EP0425815A3 (en) | 1991-09-04 |
EP0425815B1 true EP0425815B1 (fr) | 1994-08-31 |
Family
ID=11305524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90118538A Expired - Lifetime EP0425815B1 (fr) | 1989-09-29 | 1990-09-27 | Machine à laver améliorée |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0425815B1 (fr) |
DE (1) | DE69012045T2 (fr) |
ES (1) | ES2058716T3 (fr) |
IT (1) | IT1232595B (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4142464C2 (de) * | 1991-12-20 | 2000-07-13 | Bsh Bosch Siemens Hausgeraete | Wasserführendes Haushaltgerät mit einer Merkeinrichtung für die Wasserhärte |
GR1001227B (el) * | 1992-04-20 | 1993-06-30 | Dimitrios Pachopoulos | Νεου τυπου πλυντηριο πιατων υψηλης αισθητικης και λειτουργικοτητας. |
IT1279192B1 (it) * | 1995-05-09 | 1997-12-04 | Merloni Elettrodomestici Spa | Sistema per la segnalazione della concentrazione del sale che viene utilizzato per la rigenerazione di resine in una macchina di lavaggio. |
IT1279191B1 (it) * | 1995-05-09 | 1997-12-04 | Merloni Elettrodomestici Spa | Disposizione per la rigenerazione delle resine di addolcimento della acqua in una macchina di lavaggio |
DE29611091U1 (de) * | 1996-06-25 | 1997-10-23 | AEG Hausgeräte GmbH, 90429 Nürnberg | Flüssigkeitsführendes Hausgerät mit einer Programmsteuerung |
GB2321588B (en) * | 1997-01-30 | 2000-11-15 | Ferex Ltd | A washing machine |
DE19825981C2 (de) * | 1998-06-10 | 2003-04-10 | Bsh Bosch Siemens Hausgeraete | Verfahren und wassführendes Haushaltsgerät zur Wasserenthärtung |
GB2386381A (en) * | 2002-03-14 | 2003-09-17 | Darren Keats | Water softener for a washing machine |
DE10260160A1 (de) * | 2002-12-20 | 2004-07-08 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine |
ITTO20040212A1 (it) * | 2004-03-30 | 2004-06-30 | Bitron Spa | Dispositivo di controllo della durezza dell'acqua alimentata ad una macchina lavatrice, in particolare a una macchina lavastoviglie |
DE102005005039A1 (de) * | 2005-02-03 | 2006-08-10 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes Haushaltgerät |
EP1995367B1 (fr) * | 2007-05-16 | 2012-03-14 | Samsung Electronics Co., Ltd. | Machine à laver disposant d'un dispositif d'adoucissement de l'eau |
TR201716783T3 (tr) | 2009-10-09 | 2017-12-21 | Arcelik As | Su yumuşatma ünitesi içeren bir çamaşır makinası. |
DE102011081703B4 (de) * | 2011-08-29 | 2017-05-24 | BSH Hausgeräte GmbH | Verfahren zum Betrieb eines Haushaltsgerätes mit einem Durchlauferhitzer und Haushaltsgerät mit Durchlauferhitzer |
DE102012212638C5 (de) | 2012-07-18 | 2020-07-30 | Premark Feg L.L.C. | Spülmaschine sowie Verfahren zum Betreiben einer Spülmaschine |
DE102013206359A1 (de) | 2013-04-11 | 2014-10-16 | Henkel Ag & Co. Kgaa | Verfahren zum Waschen von Textilien |
EP3090084B1 (fr) * | 2013-12-30 | 2017-11-29 | Electrolux Appliances Aktiebolag | Lave-linge dispositif d'adoucissement d'eau et son procédé de commande |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1642488A1 (de) * | 1967-04-08 | 1971-05-06 | Miele & Cie | Wasch- oder Geschirrspuelmaschine mit einer Einrichtung zur UEberwachung des Enthaerters |
DE1816452A1 (de) * | 1968-12-21 | 1970-08-13 | Bosch Hausgeraete Gmbh | Geschirrspuelmaschine |
DE1950224A1 (de) * | 1969-10-04 | 1971-04-15 | Miele & Cie | UEberwachungseinrichtung bei Waschoder Geschirrspuelmaschinen-Enthaerter |
DE3527047A1 (de) * | 1985-07-27 | 1987-02-05 | Licentia Gmbh | Programmgesteuerte wasch- oder geschirrspuelmaschine |
DE3533098A1 (de) * | 1985-09-17 | 1987-03-19 | Holzer Walter | Vorrichtung zum enthaerten von wasser |
DE3810649A1 (de) * | 1988-03-29 | 1989-10-19 | Licentia Gmbh | Verfahren zur dosierung von wasserenthaertungsmitteln in waschmaschinen |
-
1989
- 1989-09-29 IT IT8967819A patent/IT1232595B/it active
-
1990
- 1990-09-27 EP EP90118538A patent/EP0425815B1/fr not_active Expired - Lifetime
- 1990-09-27 DE DE69012045T patent/DE69012045T2/de not_active Expired - Fee Related
- 1990-09-27 ES ES90118538T patent/ES2058716T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0425815A3 (en) | 1991-09-04 |
EP0425815A2 (fr) | 1991-05-08 |
IT1232595B (it) | 1992-02-26 |
DE69012045T2 (de) | 1995-01-26 |
ES2058716T3 (es) | 1994-11-01 |
DE69012045D1 (de) | 1994-10-06 |
IT8967819A0 (it) | 1989-09-29 |
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