EP 4063552 A1 20220928 - WASHING MACHINE WITH LINEN MASS DETERMINATION
Title (en)
WASHING MACHINE WITH LINEN MASS DETERMINATION
Title (de)
WASCHMASCHINE MIT WÄSCHEMASSENBESTIMMUNGSMENGE
Title (fr)
MACHINE À LAVER AVEC DÉTERMINATION DE POIDS DU LINGE
Publication
Application
Priority
IT 202100007244 A 20210325
Abstract (en)
A method for determining a linen mass (M) through a washing machine (1) or dryer, with an electric motor (14) connected with a linen drum (5) for containing the linen, comprises:A) performing a first sequence of consecutive inrush steps, each inrush step comprising:- actuating a motor (14) of the washing machine (1) to accelerate the linen drum in rotation from an initial speed (v_init) equal to zero to a maximum predetermined speed (v_max), with a predetermined acceleration (STP_1),- upon reaching the maximum predetermined speed (v_max), slowing down the motor so as to make the linen drum (5) decelerate until reaching the initial speed (v_init) again, which is equal to zero,- in a detection time interval during the acceleration of the linen drum in rotation from the initial speed (v_init) equal to zero up to the predetermined maximum speed (v_max), detecting the inrush current (I_inrush) absorbed by the electric motor (14), the rotation speed (v) of the electric motor (14), and the time (t) (STP_2),B) calculating for each individual inrush step a rotational power parameter (P) generated by the electric motor (14) depending on the inrush current (I_inrush) (STP_3),C) calculating for the entire first sequence of consecutive inrush steps an average value (P_avg) of the rotational power parameters (P) calculated for the individual inrush steps (STP_5),D) determining the mass (M) of the linen in the linen drum (5) depending on the average value (P_avg) of the rotational power parameters (P) and predetermined parameters (P_0, A) characterizing the washing machine (1) (STP_13).
IPC 8 full level
D06F 34/18 (2020.01); D06F 103/04 (2020.01); D06F 103/46 (2020.01)
CPC (source: CN EP)
D06F 33/50 (2020.02 - CN); D06F 34/14 (2020.02 - CN); D06F 34/18 (2020.02 - CN EP); D06F 33/46 (2020.02 - EP); D06F 34/28 (2020.02 - EP); D06F 58/48 (2020.02 - EP); D06F 2103/04 (2020.02 - CN EP); D06F 2103/24 (2020.02 - CN); D06F 2103/38 (2020.02 - CN); D06F 2103/46 (2020.02 - EP)
Citation (search report)
- [XYI] US 2011202303 A1 20110818 - PETRONILHO ANDRE [BR], et al
- [X] EP 3162943 A1 20170503 - ELECTROLUX APPLIANCES AB [SE]
- [Y] US 2005028299 A1 20050210 - JEON SI MOON [KR], et al
- [Y] US 2020109506 A1 20200409 - IM MYUNGHUN [KR], et al
- [A] EP 1561851 A1 20050810 - SANYO ELECTRIC WORKS [JP]
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)
EP 4063552 A1 20220928; CN 115125698 A 20220930; IT 202100007244 A1 20220925; WO 2022200927 A1 20220929
DOCDB simple family (application)
EP 22161448 A 20220310; CN 202210307653 A 20220325; IB 2022052380 W 20220316; IT 202100007244 A 20210325