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Title:
WASHING MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/228582
Kind Code:
A1
Abstract:
A washing machine, capable of correctly detecting an unbalanced state of a drum and eliminating the unbalanced state of the drum by injecting water to lifting ribs. The washing machine comprises: a cylindrical drum with a bottom, configured to be rotatable around an axis extending in a horizontal direction or an inclined direction; a plurality of hollow lifting ribs, provided on the inner circumferential surface of the drum in the axis direction of the drum; a water injection device, configured to inject water to the lifting ribs; an acceleration sensor, configured to detect vibration of the drum; a proximity switch, configured to send a pulse signal in response to rotation of the drum; an unbalance amount measurement part and an unbalanced position detection part as an eccentric detection unit, configured to measure an eccentricity and detect an eccentric position in the drum; and a central control part as a control unit, configured to control, when the eccentricity reaches a specified eccentricity threshold for water injection during spinning, the water injection device to inject water to a lifting rib corresponding to the eccentric position, the unbalance amount measurement part and the unbalanced position detection part detecting an eccentric position in the drum according to any one of multiple transformation equations A-D calculated on the basis of a relationship between acceleration data corresponding to the vibration of the drum and measured by the acceleration sensor and the pulse signal detected by the proximity switch.

Inventors:
KAWAGUCHI TOMONARI (JP)
Application Number:
PCT/CN2020/088969
Publication Date:
November 19, 2020
Filing Date:
May 07, 2020
Export Citation:
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Assignee:
QINGDAO HAIER WASHING MACH CO (CN)
AQUA CO LTD (JP)
HAIER SMART HOME CO LTD (CN)
International Classes:
D06F33/48; D06F37/20; D06F37/06
Domestic Patent References:
WO2018028388A12018-02-15
WO2018028389A12018-02-15
WO2018028390A12018-02-15
WO2019100695A12019-05-31
Foreign References:
CN105051282A2015-11-11
CN107532364A2018-01-02
JPH11244594A1999-09-14
EP0856604A21998-08-05
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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