Washing machine and control method thereof

Patent metadata

Field	Value
Publication number	US-2021102324-A1
Application number	US-202017124871-A
Country	US
Kind code	A1
Filing date	Dec 17, 2020
Priority date	Aug 29, 2017
Publication date	Apr 8, 2021
Grant date	—

Abstract

A washing machine including a door provided to open and close an inlet, a tub having an opening corresponding to the inlet, a drum rotatably provided inside the tub and in which laundry is accommodatable, a door cleaning nozzle provided to spray washing water toward the door, a pump chamber provided at a lower portion of the tub to store the washing water discharged from the tub, a drain pump provided to pump the washing water stored in the pump chamber and discharge the washing water to the outside, and a controller provided to rotate the drum in order to tumble the laundry, spray washing water through the door cleaning nozzle, operate the drain pump to discharge the washing water stored in the pump chamber, and supply the washing water to a water supply pipe connected to a detergent supply device.

First claim

1 . (canceled)

2 . (canceled)

3 . (canceled)

4 . (canceled)

5 . (canceled)

6 . (canceled)

7 . (canceled)

8 . (canceled)

9 . (canceled)

10 . (canceled)

11 . A control method of a washing machine which includes a main body provided with an inlet at a front portion of the main body, a door provided to open and close the inlet, a tub having an opening corresponding to the inlet and provided inside the main body, a drum, rotatably provided inside the tub, in which laundry received through the inlet is accomodatable, a door cleaning nozzle provided to spray washing water toward the door, a pump chamber provided at a lower portion of the tub to store washing water discharged from the tub, a drain pump provided to pump washing water stored in the pump chamber to thereby be discharged to outside the washing machine, and a detergent supply device, the control method comprising:
by the washing machine,
rotating the drum to tumble laundry accommodated in the drum;
while the drum is rotating, or after the rotation of the drum is completed, spraying washing water by the door cleaning nozzle toward the door, wherein the sprayed washing water is discharged from the tub to the pump chamber to thereby be stored in the pump chamber;
operating a drain pump to discharge the washing water stored in the pump chamber; and
after operating the drain pump to discharge the washing water, supplying additional washing water that passes through the detergent supply device, to the tub.

12 . The control method according to claim 11 , wherein the washing machine includes a circulation duct provided to introduce air into the drum, a drying duct provided to discharge air into the drum, and a blowing fan provided to form a flow of air between the circulation duct and the drying duct, and the control method further comprising:
by the washing machine,
operating, during the rotation of the drum, the blowing fan to supply air into the drum.

13 . The control method according to claim 12 , wherein the washing machine includes a heater provided to heat the air discharged into the drum, and the control method further comprising:
by the washing machine,
controlling, during the rotation of the drum, the heater to supply hot air to an inside of the drum when the blowing fan operates.

14 . The control method according to claim 11 , wherein the washing machine includes a diaphragm provided to connect the inlet of the main body and the opening of the tub, and the control method comprises:
by the washing machine,
rotating the drum at a preset speed, and spraying washing water by the door cleaning nozzle for a preset time at a preset point to clean the diaphragm.

15 . The control method according to claim 12 , further comprising:
by the washing machine,
supplying washing water to the circulation duct before supplying the additional washing water that passes through the detergent supply device.

16 . (canceled)

17 . (canceled)

18 . (canceled)

19 . A control method of a washing machine which includes a tub, a drum rotatably provided inside the tub and in which laundry is accommodatable, at least one nozzle provided to spray washing water to an inside of the drum, a pump chamber provided at a lower portion of the tub to store washing water discharged from the tub, a drain pump provided to pump washing water stored in the pump chamber to outside the washing machine, and a detergent supply device, the control method comprising:
by the washing machine,
rotating the drum to separate contaminants from laundry accommodated in the drum;
while the drum is rotating, or after the rotation of the drum is completed, spraying washing water to the inside of the drum by the at least one nozzle;
after spraying the washing water to the inside of the drum, rotating the drum in one direction to discharge washing water contained in the laundry into a space between the drum and the tub, wherein the washing water discharged into the space is guided to the pump chamber to thereby be stored in the pump chamber;
while the drum is rotating in one direction, or after the rotation of the drum in one direction is completed, operating the drain pump to discharge the washing water stored in the pump chamber; and
after operating the drain pump to discharge the washing water, supplying additional washing water that passes through the detergent supply device, to the tub.

20 . The control method according to claim 19 , further comprising:
by the washing machine,
operating, when spraying washing water by the at least one nozzle, the drain pump to discharge the washing water when a water level of the tub reaches a reference value.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Jung Ha
• Seong Su Jin
• Park Joo Yeon
• Lee Bo-Kyung
• Pyo Sang Yeon
• Seo Ja Yeon
• Jung Woo Kyung
• Han Jeong Su

Classifications

• D06F35/005 Primary

  Methods for washing, rinsing or spin-drying · CPC title

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F25/00

  Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air  (control of washing or of washing and drying D06F33/00, D06F34/00; domestic laundry dryers D06F58/00) · CPC title

• D06F39/085

  Arrangements or adaptations of pumps · CPC title

• D06F39/083

  Liquid discharge or recirculation arrangements · CPC title