EP 0633342 A1 19950111 - Method and device for automatically optimising the use of detergent in a washing machine, washing-drying machine, dishwasher or the like, by measuring the water hardness.
Title (en)
Method and device for automatically optimising the use of detergent in a washing machine, washing-drying machine, dishwasher or the like, by measuring the water hardness.
Title (de)
Verfahren und Vorrichtung zum automatischen Optimieren der Waschmittelmenge in einer Waschmaschine, einem Waschtrockner, einer Geschirrspülmaschine oder Dergleichen durch Messung der Wasserhärte.
Title (fr)
Procédé et dispositif pour optimiser automatiquement la quantité de détergent dans une machine à laver, une machine à laver et à sècher, un lave vaisselle ou similaire en mesurant la dureté de l'eau.
Publication
Application
Priority
EP 93110763 A 19930706
Abstract (en)
A method for automatically optimizing the use of detergent in a washing machine, washing-drying machine, dishwasher or the like comprising a usual detergent container or drawer (35), said method consisting of monitoring, at least at the commencement of a machine wash cycle, the conductivity of the water entering the machine and hence its hardness, and on the basis of this feeding a suitable quantity of detergent into the wash tub or environment, this quantity being proportional at least to the measured water hardness. A device for implementing the aforesaid method comprises water conductivity measurement means (1) connected to means (3) for evaluating the measured conductivity value and which control selector means (30) for feeding a suitable quantity of detergent into the wash tub or environment. <IMAGE>
IPC 1-7
IPC 8 full level
D06F 39/00 (2006.01); D06F 39/02 (2006.01)
CPC (source: EP US)
A47L 15/0055 (2013.01 - EP US); A47L 15/449 (2013.01 - EP); D06F 33/57 (2020.02 - EP US); D06F 34/22 (2020.02 - EP US); A47L 2401/11 (2013.01 - EP); A47L 2401/30 (2013.01 - EP); A47L 2501/07 (2013.01 - EP); D06F 2103/20 (2020.02 - EP US); D06F 2105/02 (2020.02 - EP US); D06F 2105/42 (2020.02 - EP US); D06F 2105/58 (2020.02 - EP US)
Citation (search report)
- [XA] US 3223108 A 19651214 - MARTZ JR ARTHUR F
- [A] US 3645669 A 19720229 - RAUSCH GERHARD
- [A] DD 232518 A1 19860129 - SCHWARZENBERG WASCHGERAETE [DD]
- [A] EP 0506137 A1 19920930 - HITACHI LTD [JP]
Citation (third parties)
Third party :
- DE 1517562 A1 19700205 - PHILIPS PATENTVERWALTUNG
- DE 2419387 A1 19741121 - HONEYWELL INC
- DE 2917859 C2 19901115
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0633342 A1 19950111; EP 0633342 B1 19990113; DE 69323073 D1 19990225; DE 69323073 T2 19990805
DOCDB simple family (application)
EP 93110763 A 19930706; DE 69323073 T 19930706