Washing machine and sensing method of laundry weight contained therein

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(11)

EP 2 194 180 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.09.2010 Bulletin 2010/36

(43)	Date of publication A2:
	09.06.2010 Bulletin 2010/23

(21)	Application number: 09156898.0

(22)	Date of filing: 31.03.2009

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International Patent Classification (IPC):

D06F 37/30^(2006.01)

D06F 39/00^(2006.01)

(84)	Designated Contracting States:
	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 SE SI SK TR
	Designated Extension States:
	AL BA RS

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Priority:

02.12.2008 KR 20080121380

(71)	Applicant: Samsung Electronics Co., Ltd.
	Suwon-si Gyeonggi-do (KR)

(72)	Inventors:
	Yang, Soon Bae Gyeonggi-do (KR) Park, Jun Hyun Gyeonggi-do (KR) Park, Chang Joo Seoul (KR) Choi, Jung Chul Gyeonggi-do (KR)

(74)	Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät
	Leopoldstrasse 4 80802 München 80802 München (DE)

(54)	Washing machine and sensing method of laundry weight contained therein

(57) A washing machine to re-perform sensing of the weight of laundry when an AC power is unstable is described. A zero-voltage detector detects a zero voltage of the AC power and generates a zero-voltage signal. If a count value counted according to the zero-voltage signal is greater than a maximum value, a microprocessor recognizes that the a voltage variation is generated due to abrupt power failure and if the count value is less than a minimum value, the microprocessor recognizes that a voltage variation is generated due to noise contained in the power. Then the microprocessor re-performs the sensing of the weight of laundry.

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