Washing machine and control method therefor

Patent metadata

Field	Value
Publication number	US-10655265-B2
Application number	US-201415309081-A
Country	US
Kind code	B2
Filing date	Jul 2, 2014
Priority date	May 8, 2014
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A washing machine comprises a water-containing barrel, a flocculation container and a filtering container that are successively brought into communication in a loop; the flocculation container is provided with a stirring mechanism and a washing mechanism; a rotatable filtering mechanism and a filtering and self-washing mechanism using water intake current to spray and clean the filtering mechanism are provided in the filtering container. When the washing ends, water is discharged into the flocculation container, and after the flocculation processing, the water is discharged into the water-containing barrel of the washing machine for rinsing after being filtered by the filtering container, and the processing procedure is circulated until the rinsing is completed; during the last rinsing processing, the flocculation generated in the circulated water flocculation processing is controlled to be discharged and the rinsing is completed.

First claim

What is claimed is:

1. A control method in a washing machine having a circulated water treatment function comprising:
discharging water into a flocculation container after a washing process ends;
performing a flocculation treatment, wherein the flocculation treatment includes
first introducing a quantitative flocculant;
inflooding tap water to flush the quantitative flocculant into the flocculation container;
stratifying the contents of the flocculation container after stirring for a set time and standing for a set time;
draining water in a lower layer which contains less flocculation into a filtering container; and
accumulating the flocculation which is in an upper layer in the flocculation container until a last rinse is completed;

after performing the flocculation treatment, filtering water by the filtering container, and then discharging water into a water containing drum of the washing machine for rinsing;
circulating the water repeatedly in the foregoing processing until a last rinse is completed; and
discharging flocculation generated in the flocculation treatment for circulated water during the last rinsing process and using rinsing water to wash the flocculation container after the rinsing is completed.

2. The control method in a washing machine according to claim 1 , comprising:
discharging waste water into the filtering container; and discharging the waste water from the filtering container after cleaning the flocculation container.

3. The control method in a washing machine according to claim 2 , wherein the rinsing water completes cleaning the flocculation container, and tap water is inflooded to clean the filtering container.

4. The control method in a washing machine according to claim 1 , comprising:
after the rinsing water completes cleaning the flocculation container, inflooding tap water to clean the filtering container.

5. The control method in a washing machine according to claim 1 , wherein, during the circulating water treatment, if the flocculation detected in the flocculation container exceeds an upper limit of a set value, the flocculation treatment is completed, the flocculation is discharged, and a next flocculation treatment for water is carried out.

6. The control method in a washing machine according to claim 5 , wherein, the flocculation is discharged while keeping stirring until the discharge ends.

7. The control method in a washing machine according to claim 1 , comprising:
discharging the flocculation while stirring the flocculation until the discharge ends.

8. The control method in a washing machine according to claim 1 , comprising:
determining whether it is needed to add water or not according to a comparison between a detected water level and a set water level after draining treated water into the water containing drum each time.

9. The control method in a washing machine according to claim 1 , comprising:
calculating a dose of the flocculant for the water to be processed by the flocculation treatment according to an amount of detergent, an amount of water intake for washing, and an amount of water in each flocculation treatment.

10. The control method in a washing machine according to claim 1 , wherein, after the stratification, water in the lower layer containing less flocculation is discharged into the filtering container, a discharge time is fixed by a setting amount, or calculated according to the dosage of the flocculant and the amount of water in the flocculation treatment, or measured according to a turbidity.

Assignees

• Qingdao Haier Washing Mach Co

Inventors

• Xu Sheng
• Deng Jinzhu

Classifications

• D06F39/08 Primary

  Liquid supply or discharge arrangements (supply of soap or other washing agents D06F39/02) · CPC title

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title

• D06F39/088 Primary

  Liquid supply arrangements · CPC title

• D06F39/006

  Textiles & Paper · mapped topic

• Y02B40/56

  Cross-Sectional Technologies · mapped topic