Title (en)

Washing machine

Title (de)

Waschmaschine

Title (fr)

Machine à laver

Publication

EP 2009169 A3 20141224 (EN)

Application

EP 08157755 A 20080606

Priority

JP 2007167142 A 20070626

Abstract (en)

[origin: EP2009169A2] A washing machine includes a drum (3) arranged to contain a laundry and to rotate, a motor (7) rotating the drum (3), a rotation speed detector (14) detecting a rotation speed of the motor (7), and a controller (31) controlling the motor (7) according to the rotation speed detected by the rotation speed detector (14), the controller (31) detecting an amount of the laundry. The controller (31) is operable to detect a first acceleration of the drum (3) while allowing the motor (7) to generate a predetermined accelerating torque to raise the rotation speed of the drum (3) from a first predetermined rotation speed to a second predetermined rotation speed. The controller (31) is operable to detect a second acceleration of the drum (3) while allowing the motor (7) to generate a predetermined decelerating torque to decrease the rotation speed of the drum (3) from a third predetermined third rotation speed to a fourth predetermined rotation speed. The controller (31) is operable to detect the amount of the laundry according to the first angular acceleration and the second angular acceleration. In the washing machine, the controller (31) can detect the amount of the laundry accurately.

IPC 8 full level

D06F 33/32 (2020.01); D06F 34/18 (2020.01)

CPC (source: EP US)

D06F 33/32 (2020.02 - EP US); D06F 34/18 (2020.02 - EP US); D06F 2101/02 (2020.02 - EP US); D06F 2101/10 (2020.02 - EP US); D06F 2105/46 (2020.02 - EP US)

Citation (search report)

• [I] US 2005028299 A1 20050210 - JEON SI MOON [KR], et al
• [A] DE 19928657 A1 20001228 - DIEHL AKO STIFTUNG GMBH & CO [DE]
• [A] WO 2004081276 A1 20040923 - MULTIBRAS ELETRODOMESTICOS SA [BR], et al
• [A] EP 1201811 A2 20020502 - TOSHIBA KK [JP]
• [A] GB 2325245 A 19981118 - TOSHIBA KK [JP]
• [A] EP 1512785 A1 20050309 - LG ELECTRONICS INC [KR]
• [A] EP 1561851 A1 20050810 - SANYO ELECTRIC WORKS [JP]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2009169 A2 20081231; EP 2009169 A3 20141224; EP 2009169 B1 20160127; CN 101333747 A 20081231; CN 101333747 B 20101215; JP 2009005723 A 20090115; JP 4375447 B2 20091202; SI 2009169 T1 20160630; TW 200934911 A 20090816; TW I361236 B 20120401

DOCDB simple family (application)

EP 08157755 A 20080606; CN 200810126105 A 20080626; JP 2007167142 A 20070626; SI 200831604 A 20080606; TW 97119690 A 20080528