# US 2021/0277560 A1 · Method for controlling washing machine

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- Number: US 2021/0277560 A1
- Document ID: US20210277560A1
- Status: Published application
- Kind: A1
- Application number: 16/617,339
- Filed: 2018-05-10
- Published: 2021-09-09
- Earliest claimed: 2017-05-10
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Myunghun IM; Hwanjin JUNG; Kyungchul WOO; Hyundong KIM; Junghoon LEE
- Web page: https://patentgrep.com/patent/US20210277560A1

## CPC

- D06F 39/02: Devices for adding soap or other washing agents
- D06F 33/34: of water filling
- D06F 34/06: Timing arrangements
- D06F 39/022: {in a liquid state (D06F39/024 takes precedence)}
- D06F 39/08: Liquid supply or discharge arrangements (supply of soap or other washing agents D06F39/02)
- D06F 39/085: {Arrangements or adaptations of pumps}
- D06F 2103/18: Washing liquid level
- D06F 2103/24: Spin speed; Drum movements
- D06F 2105/06: Recirculation of washing liquids, e.g. by pumps or diverting valves
- D06F 2105/42: Detergent or additive supply
- D06F 2105/48: Drum speed
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES

## Abstract

A method of controlling a washing machine of the present invention includes the steps of: (a) supplying detergent contained in a dispenser together with water into an inner tub; (b) operating a pump to transfer the water supplied together with the detergent to a plurality of nozzles disposed above the inner tub; and (c) further supplying water into the inner tub, operating the pump while the water is being supplied, and rotating the inner tub so that laundry contained in the inner tub adheres to an inner surface of the inner tub by centrifugal force during the operation of the pump.

## Claims

### Claim 1

A method of controlling a washing machine, the method comprising the steps of:
(a) supplying detergent contained in a dispenser together with water into an inner tub;
(b) operating a pump to transfer the water supplied together with the detergent to a plurality of nozzles disposed above the inner tub; and
(c) further supplying water into the inner tub, operating the pump while the water is being supplied, and rotating the inner tub so that laundry contained in the inner tub adheres to an inner surface of the inner tub by centrifugal force during the operation of the pump.

### Claim 2 (depends on 1)

The method of claim 1, wherein the step (a) comprises:
opening a water supply valve for supplying water to the dispenser; and
blocking the water supply valve, when a water level in an outer tub in which the inner tub is accommodated reaches a preset first water level.

### Claim 3 (depends on 2)

The method of claim 2, wherein the step (c) comprises:
opening the water supply valve; and
blocking the water supply valve, when the water level in the outer tub reaches a preset second water level.

### Claim 4 (depends on 1)

The method of claim 1, wherein the step (c) comprises rotating the pump at a higher speed than in the step (b).

### Claim 5 (depends on 1)

The method of claim 1, wherein the step (c) further comprises increasing a rotation speed of the pump.

### Claim 6

A method of controlling a washing machine, the method comprising the steps of:
(a) supplying detergent contained in a dispenser together with water into an inner tub;
(b) operating a pump to transfer the water supplied together with the detergent to a plurality of nozzles disposed above the inner tub; and
(c) further supplying water into the inner tub through the dispenser, and operating the pump while water is being supplied,
wherein the step (c) comprises rotating the pump at a higher speed than in the step (b).

### Claim 7 (depends on 6)

The method of claim 6, wherein the step (c) further comprises rotating the inner tub so that laundry contained in the inner tub adheres to an inner surface of the inner tub by centrifugal force during the operation of the pump.

### Claim 8 (depends on 6)

The method of claim 6, wherein the step (a) comprises:
opening a water supply valve for supplying water to the dispenser; and
blocking the water supply valve, when a water level in an outer tub in which the inner tub is accommodated reaches a preset first water level.

### Claim 9 (depends on 8)

The method of claim 8, wherein the step (b) further comprises stopping the operation of the pump,
wherein the step (c) comprises operating the pump again, after the operation of the pump is stopped in the step (b) and a preset time is elapsed.

### Claim 10 (depends on 9)

The method of claim 9, wherein the step (a) further comprises stopping water supply when the water level in the outer tub reaches a preset second water level.

### Claim 11 (depends on 10)

The method of claim 10, further comprising washing laundry by controlling rotation of at least one of the inner tub and a pulsator rotatably provided in the inner tub, after the step (c).