Washing machine and method for supplying water thereof

• US 7,578,018 B2
• Filed: 07/07/2005
• Issued: 08/25/2009
• Est. Priority Date: 07/08/2004
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Hyo Sik
• Primary Examiner(s): Stinson; Frankie L
• Application Number:
  US11/175,327
• Publication Number:
  US 20060080787A1
• Time in Patent Office: 1,510 Days
• Field of Search: 815/8, 815/9, 68/17.R, 682/07, 134/184, 134/198
• US Class Current: 8/158
• CPC Class Codes: D06F 2103/04 Quantity, e.g. weight or variation of weight
• CPC Class Codes: D06F 2103/18 Washing liquid level
• CPC Class Codes: D06F 2105/02 Water supply
• CPC Class Codes: D06F 33/34 of water filling
• CPC Class Codes: D06F 39/087 Water level measuring or regulating devices

Abstract

A washing machine and a method for supplying water thereof are disclosed. The washing machine comprises a supply valve for supplying cold/warm water into a tub, a water level detection unit for detecting a water level in the tub, and a microcomputer for performing an intermittent water supply and a continuous water supply by controlling an amount of water supplied to the tub from the water supply valve via a detergent barrel, and for controlling water supply according to the water level in the tub detected by the water level detection unit. The intermittent and continuous water supply is performed in such a manner of supplying water and stopping the water supply, and water supply time is differently set for the primary and secondary intermittent water supply, so that the detergent can be smoothly supplied to the tub without remaining in the barrel.

Claims

1. A washing method of a washing machine, comprising:

the first step of performing a primary intermittent water supply at an initial water supply stage for allowing detergent in a detergent barrel to be supplied into a tub;

the second step of performing a primary continuous water supply for supplying water to a first reference water level in the tub;

the third step of performing a secondary intermittent water supply for removing the detergent remaining in the detergent barrel; and

the fourth step of performing a secondary continuous water supply for continuously supplying water to a second reference water level in the tub.

2. The method as set forth in claim 1, wherein at the first step, the primary intermittent water supply is repeated in such a manner of supplying the water for a short period and then stopping the water supply for a predetermined period such that the detergent is supplied to the tub together with the water supplied to the tub.

3. The method as set forth in claim 2, wherein the primary intermittent water supply is performed in such a manner of supplying the water for 0.3 seconds, and then stopping the water supply for 2 seconds.

4. The method as set forth in claim 3, wherein at the first step, the primary intermittent water supply is repeated three times.

5. The method as set forth in claim 1, wherein at the third step, the secondary intermittent water supply is repeated in such a manner of supplying the water for 5 seconds and then stopping the water supply for 12 seconds to remove the detergent remaining in the detergent barrel.

6. The method as set forth in claim 5, wherein at the third step, the secondary intermittent water supply is repeated three times.

7. The method as set forth in claim 1, further comprising:

the fourth step of detecting an amount of laundry in the tub.

8. The method as set forth in claim 7, wherein the first and second reference water levels are varied according to the detected amount of laundry.