EP 3268528 A1 20180117 - METHOD FOR OPERATING A WASHING MACHINE HAVING AN IMPEDANCE SENSOR AND WASHING MACHINE SUITABLE THEREFOR
Title (en)
METHOD FOR OPERATING A WASHING MACHINE HAVING AN IMPEDANCE SENSOR AND WASHING MACHINE SUITABLE THEREFOR
Title (de)
VERFAHREN ZUM BETRIEB EINER WASCHMASCHINE MIT EINEM IMPEDANZSENSOR SOWIE HIERZU GEEIGNETE WASCHMASCHINE
Title (fr)
PROCÉDÉ POUR FAIRE FONCTIONNER UN LAVE-LINGE COMPRENANT UN CAPTEUR D'IMPÉDANCE ET LAVE-LINGE POUR LA MISE EN OEUVRE DE CE PROCÉDÉ
Publication
Application
Priority
- DE 102015204536 A 20150313
- EP 2016053135 W 20160215
Abstract (en)
[origin: WO2016146321A1] The invention relates to a method for operating a washing machine (1), comprising a container (2), a drum (3) for accommodating laundry items (4), a drive motor (5) for the drum (3), an impedance sensor (9) in the container (2) for determining an impedance signal in dependence on a composition of an aqueous liquid (7) in the container (2), and a control device (8), wherein the following steps are performed: (a) providing a sufactant-containing aqueous liquid (7) having a surfactant concentration cTensid in the container (2) in such a way that the relation CCMC ≤ cTensid < Cgrenz is satisfied, wherein CCMC is a critical micelle concentration; (b) measuring the surfactant concentration CTensid in the surfactant-containing aqueous liquid provided in step (a) by capturing and evaluating impedance signals of the impedance sensor (9) by using a relationship between the impedance signals and the surfactant concentration, which relationship is stored in the control device (8); (c) performing a washing phase in such a way that, (c1) in the case a determined surfactant concentration CTensid ≥ Cgrenz, the surfactant-containing aqueous liquid is thinned until the relation CCMC ≤ CTensid < Cgrenz is satisfied; (c2) in the case of a determined surfactant concentration CTensid < CCMC, additional detergent is added in a metered manner and/or a motion program of the drum (3) stored in the control device (8) for this surfactant concentration is performed. The invention further relates to a washing machine (1) suitable for performing the method.
IPC 8 full level
D06F 33/37 (2020.01); D06F 35/00 (2006.01); D06F 39/02 (2006.01)
CPC (source: CN EP US)
D06F 33/37 (2020.02 - CN EP US); D06F 39/022 (2013.01 - CN EP US); D06F 2103/04 (2020.02 - CN EP US); D06F 2103/18 (2020.02 - CN EP US); D06F 2103/22 (2020.02 - CN EP US); D06F 2105/42 (2020.02 - CN EP US)
Citation (search report)
See references of WO 2016146321A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102015204536 A1 20160915; CN 107429462 A 20171201; CN 107429462 B 20191105; EP 3268528 A1 20180117; EP 3268528 B1 20230705; WO 2016146321 A1 20160922
DOCDB simple family (application)
DE 102015204536 A 20150313; CN 201680015574 A 20160215; EP 16704247 A 20160215; EP 2016053135 W 20160215