Laundry treatment apparatus and method of controlling the same

Patent metadata

Field	Value
Publication number	US-10704187-B2
Application number	US-201715670517-A
Country	US
Kind code	B2
Filing date	Aug 7, 2017
Priority date	Aug 8, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A method of controlling a laundry treatment apparatus is disclosed. The method includes supplying water the tub, rotating only the agitator to an angle less than 360 degrees, rotating only the agitator to an angle of 360 degrees or more so as to supply water to the filter and to filter the water through the filter, and rotating only the agitator to an angle less than 360 degrees after the completion of filtering.

First claim

What is claimed is:

1. A method of controlling a laundry treatment apparatus that includes a tub having a space for containing water, a drum rotatably disposed in the tub, the drum having a space for containing laundry and a drum port provided at an upper wall thereof, a chamber to guide water, an agitator rotatably disposed in the drum to create water flow and to transfer water to the chamber, and a filter disposed at a level higher than the agitator to filter water introduced into the chamber, the method comprising:
performing a water supply operation for washing operation by supplying water to the tub;
after performing the water supply operation, performing a first dispersion operation by rotating the agitator to an angle less than 360 degrees at a rotational speed that is less than a rotational speed set for a first agitating operation;
performing a water flow creation operation by rotating the agitator and the drum in a same direction to cause water in the tub to be provided to an upper part of the tub and to be introduced into the drum through the drum port;
after performing the water flow creating operation, performing a second dispersion operation by rotating the agitator to an angle less than 360 degrees at a rotational speed that is less than a rotational speed set for the first agitation operation;
performing the first agitating operation by rotating the agitator to an angle less than 360 degrees so as to reduce laundry tangling;
performing a first filtering operation by rotating the agitator to an angle of 360 degrees or more so as to supply water to the filter and to filter the water through the filter; and
after completing the first filtering operation, performing a second agitating operation by rotating the agitator to an angle less than 360 degrees
wherein the first agitating operation, the first filtering operation, and the second agitating operation are sequentially performed or are successively performed.

2. The method according to claim 1 , wherein performing the first agitating operation includes rotating only the agitator to the angle less than 360 degrees, wherein performing the first filtering operation includes rotating only the agitator to the angle of 360 degrees or more, and wherein performing the second agitating operation including rotating only the agitator to the angle less than 360 degrees.

3. The method according to claim 1 , wherein a rotational speed of the agitator set for the first agitating operation is less than a rotational speed of the agitator set for the first filtering operation, and a rotational speed of the agitator set for the second agitating operation is less than the rotational speed of the agitator set for the first filtering operation.

4. The method according to claim 3 , wherein the rotational speed of the agitator for the first agitating operation and the rotational speed of the agitator for the second agitating operation are set such that water is not supplied to the filter.

5. The method according to claim 1 , wherein performing the first agitating operation includes:
rotating, in a clockwise direction, the agitator to an angle less than 360 degrees; and
rotating, in a counterclockwise direction, the agitator to an angle less than 360 degrees.

6. The method according to claim 1 , wherein performing the second agitating operation includes:
rotating, in a clockwise direction, the agitator to an angle less than 360 degrees; and
rotating, in a counterclockwise direction, the agitator to an angle less than 360 degrees.

7. The method according to claim 1 , wherein performing the first dispersion operation includes rotating only the agitator to the angle less than 360 degrees, and performing the second dispersion operation includes rotating only the agitator to the angle less than 360 degrees.

8. The method according to claim 1 , wherein a rotational speed of the agitator set for the water flow creation operation and a rotational speed of the drum set for the water flow creation operation are higher than a rotational speed of the agitator set for the first filtering operation.

9. The method according to claim 1 , wherein the first dispersion operation, the water flow creation operation and the second dispersion operation are performed after performing the water supply operation and prior to performing the first agitating operation.

10. The method according to claim 1 , wherein each of the first and second dispersion operations includes:
rotating, in a clockwise direction, the agitator to an angle less than 360 degrees; and
rotating, in a counterclockwise direction, the agitator to an angle less than 360 degrees.

11. The method according to claim 1 , further comprising:
after performing the second agitating operation, performing a second filtering operation by rotating, in one of a clockwise direction and a counterclockwise direction, the agitator to an angle of 360 degrees or more so as to supply water to the filter;
performing a water flow creation operation by rotating the agitator and the drum in a same direction to create a water flow at a circumferential surface of the tub; and
performing a water discharge operation by discharging water in the tub.

12. The method according to claim 11 , wherein performing the second filtering operation and performing the water flow creation operation are sequentially performed.

13. The method according to claim 11 , wherein at least a portion of performing the water flow creation operation is performed concurrently with at least a portion of performing the water discharge operation.

14. The method according to claim 13 , wherein initiation of performing the water flow creation operation is before initiation of performing the water discharge operation, and performing the water flow creation operation is completed before completion of performing the water discharge operation.

15. A method of controlling a laundry treatment apparatus that includes a tub, a drum rotatably disposed in the tub and having a space for containing laundry and a drum port, a chamber to guide water, an agitator rotatably disposed in the drum, and a filter, the method comprising:
supplying water to the tub for washing the laundry;
after supplying water to the tub, rotating only the agitator to an angle less than 360 degrees at a rotational speed that is less than a rotational speed set for the rotating of only the agitator to the angle less than 360 degrees;
rotating the agitator and the drum in a same direction to cause water in the tub to be provided to an upper part of the tub and to be introduced into the drum through the drum port;
after rotating the agitator and the drum in the same direction, rotating only the agitator to an angle less than 360 degrees at a rotational speed that is less than the rotational speed set for the rotating of only the agitator to the angle less than 360 degrees;
rotating only the agitator to an angle less than 360 degrees so as to reduce laundry tangling;
rotating only the agitator to an angle of 360 degrees or more so as to supply water to the filter and to filter the water through the filter; and
after rotating only the agitator to the angle of 360 degrees or more, rotating the agitator to an angle less than 360 degrees.

16. The method according to claim 15 , wherein a rotational speed of the agitator set for the rotating of only the agitator to the angle less than 360 degrees is less than a rotational speed of the agitator set for the rotating of only the agitator to the angle of 360 degrees or more.

17. The method according to claim 15 , further comprising:

Assignees

• Lg Electronics Inc

Inventors

• Jang Yongwoon

Classifications

• D06F39/10 Primary

  Filtering arrangements · CPC title

• D06F33/32 Primary

  Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry · CPC title

• D06F39/088 Primary

  Liquid supply arrangements · CPC title

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title

• D06F34/28

  Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress · CPC title