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1. (WO2018161840) METHOD AND WASHING MACHINE FOR WASHING KNITTED WOOLEN ITEM

Pub. No.:    WO/2018/161840    International Application No.:    PCT/CN2018/077747
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: D06F 33/02
Applicants: QINGDAO HAIER WASHING MACHINE CO., LTD.
青岛海尔洗衣机有限公司
Inventors: FANG, Yanping
方艳萍
WEI, Xin
魏新
HAN, Xinhua
韩新华
YANG, Ming
杨铭
ZENG, Jingfeng
曾靖峰
Title: METHOD AND WASHING MACHINE FOR WASHING KNITTED WOOLEN ITEM
Abstract:
A method and washing machine for washing a knitted woolen item. The method comprises the following steps: a water input step; a washing step, wherein a wash tub is driven to rotate back and forth intermittently, a lifting rib on the wash tub drives and forms vortex flows in different directions, an internal compartment of the lifting rib is filled with water, rinsing with water is performed after emerging from the water, and the knitted woolen item is agitated to remove dirt; and a water removal step, comprising a discharging phase wherein rinsing water is discharged to an empty level, a slow water removal phase using a speed of 120-200 rpm for water removal, and an actual water removal phase using a speed of 500-700 rpm for water removal. The invention accelerates wetting of the knitted item and improves washing uniformity. Reasonable configuration of the rotating speed improves a water rinsing height of the lifting rib, generating stronger agitating forces to agitate and remove dirt from the knitted woolen item. During a slow water removal process of the water removal step, the knitted woolen item is pressed tightly against a wall of the wash tub so as to eliminate relative motion, prevent friction and pulling of the knitted woolen item, and reduce rotation unbalance, thus helping to maintain the form of the knitted woolen item.