EP 0741990 A3 19970108 - System for signalling the concentration of the salt used for the resins regeneration in a washing machine
Title (en)
System for signalling the concentration of the salt used for the resins regeneration in a washing machine
Title (de)
Salzkonzentrationsanzeigevorrichtung zur Harzregeneration in einer Waschmaschine
Title (fr)
Dispositif pour signaler la concentration en sel utilisé pour la régénération des résines dans une machine à laver
Publication
Application
Priority
IT TO950361 A 19950509
Abstract (en)
[origin: EP0741990A2] A signal system is described of the salt concentration used for resin regeneration in a washing machine, specifically a household dishwasher incorporating a water softening device (DD) comprising a compartment ( R ) for the resins used to reduce the degree of water hardness, a compartment (S) for the salt required for regeneration of the resins that have lost their effectiveness following execution of softening steps, means to determine salt availability in the relevant salt compartment (S), means (L) to signal the need for salt filling when the level in the salt compartment (S) lowers down to a preset minimum level, where the resin reactivating processes take place periodically in time, specifically with each wash cycle executed by the machine. According to the invention, said means to determine salt availability comprise a sensing device (A,B,C,Q,MP) of the degree of water hardness from the mains and an electronic control unit (MP) for evaluating salt the consumption as a function of the degree of water hardness from the mains, said signal means (L) being activated, if necessary, by said control unit (MP) when the evaluated salt concentration reaches a defined threshold. <IMAGE>
IPC 1-7
IPC 8 full level
A47L 15/42 (2006.01)
CPC (source: EP)
A47L 15/4229 (2013.01)
Citation (search report)
- [XA] DE 3441222 A1 19860515 - WINTERHALTER KG KARL [DE]
- [PXA] DE 4401411 A1 19950720 - LICENTIA GMBH [DE]
- [A] EP 0496957 A1 19920805 - ZANUSSI ELETTRODOMESTICI [IT]
- [A] EP 0425815 A2 19910508 - MERLONI ELETTRODOMESTICI SPA [IT]
- [A] EP 0517205 A1 19921209 - AWECO KUNSTSTOFFTECH GERAETE [DE]
- [A] EP 0249000 A2 19871216 - ZANUSSI ELETTRODOMESTICI [IT]
- [X] PATENT ABSTRACTS OF JAPAN vol. 12, no. 427 (P - 784) 11 November 1988 (1988-11-11)
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0741990 A2 19961113; EP 0741990 A3 19970108; IT 1279192 B1 19971204; IT TO950361 A0 19950509; IT TO950361 A1 19961109
DOCDB simple family (application)
EP 96107207 A 19960507; IT TO950361 A 19950509