Washing machine and control method of washing machine
AssigneeLG Electronics Inc.
InventorHan Kim
Life of this patent
Estimating the term…
Abstract
A control method includes performing a first drum operation of supplying water by a first set amount together with a detergent into the tub and rotating the drum at a first drum rotation speed while water is supplied, operating the pump at a first pump rotation speed during the first drum operation, operating a heater to heat water in the tub, performing a second drum operation of rotating the drum at the first drum rotation speed during the operation of the heater, and operating the pump at a second pump rotation speed at least once during the second drum operation, stopping the operation of the heater, performing a third drum operation of rotating the drum at the first drum rotation speed, and operating the pump at the first pump rotation speed during the third drum operation.
Claims19
A washing machine comprising:
- a tub configured to store water;
- a drum rotatably provided in the tub;
- a driving unit configured to rotate the drum;
- a water supply unit configured to supply water supplied from an external water source to the tub;
- a pump having a pump motor, the pump being configured to pressure-feed water discharged from the tub;
- a nozzle configured to spray the water that is pressure-fed by the pump into the drum;
- a heater configured to heat the water in the tub;
- and
- a controller configured to control the driving unit, the water supply unit, the pump motor, and the heater,
- wherein the controller is configured to:
- control the water supply unit to supply water by a first set amount to the tub,
- control the driving unit to rotate the drum while water is being supplied,
- rotate the pump motor during the rotation of the drum,
- operate the heater in a state in which the first set amount of water is supplied to the tub,
- control the driving unit to rotate the drum during the operation of the heater,
- operate the pump motor during the rotation of the drum and the operation of the heater,
- stop the operation of the heater,
- control the driving unit to rotate the drum in a state in which the operation of the heater is stopped, and
- rotate the pump motor during the rotation of the drum in a state in which the operation of the heater is stopped, and
- wherein a ratio of a stop time of the drum to a rotation time of the drum when the heater is operated is greater than a ratio of a stop time of the drum to a rotation time of the drum when water is supplied to the tub.
A control method of a washing machine including a drum rotating about a horizontal rotation axis in a tub and a plurality of nozzles spraying water discharged from the tub and circulated by a pump into the drum, wherein the control method comprising:
- (a) step of performing a first drum operation of supplying water by a first set amount together with a detergent into the tub and rotating the drum at a first drum rotation speed, while water is supplied, at least once and operating the pump at a first pump rotation speed at least once during the first drum operation;
- (b) step of operating a heater to heat water in the tub, performing a second drum operation of rotating the drum at the first drum rotation speed during the operation of the heater at least once, and operating the pump at a second pump rotation speed at least once during the second drum operation, wherein the second pump rotation speed is less than the first pump rotation speed;
- and
- (c) step of stopping the operation of the heater, performing a third drum operation of rotating the drum at the first drum rotation speed at least once, and operating the pump at the first pump rotation speed at least once during the third drum operation,
- wherein a ratio of a stop time of the drum to an operation time of the drum in step (b) is greater than a ratio of a stop time of the drum to an operation time of the drum in step (a).
A control method of a washing machine including a drum rotating about a horizontal rotation axis in a tub and a plurality of nozzles spraying water discharged from the tub and circulated by a pump into the drum, wherein the control method comprising:
- (a) detecting an amount of laundry introduced into the drum;
- and
- (b) performing a first washing mode when the detected amount of the laundry is a first laundry amount, and performing a second washing mode when the detected amount of the laundry is a second laundry amount,
- wherein the first washing mode includes:
- (c-1) a step of supplying water by a first set amount together with a detergent into the tub, performing a first drum operation of rotating the drum at a first drum rotation speed, while water is supplied, at least once, and operating the pump at a first pump rotation speed at least once during the first drum operation;
- (c-2) a step of operating a heater to heat water in the tub, performing a second drum operation of rotating the drum at the first drum rotation speed at least once during the operation of the heater, and operating the pump at a second pump rotation speed during the second drum operation, wherein the second pump rotation speed is less than the first pump rotation speed;
- and
- (c-3) a step of performing a third drum operation of rotating the drum at the first drum rotation speed at least once and operating the pump at the first pump rotation speed at least once during the second drum operation, and
- the second washing mode includes:
- (d-1) a step of supplying water by a first set amount together with a detergent into the tub, performing a first drum operation of rotating the drum at the first drum rotation speed at least once, while water is supplied, and operating the pump at the first pump rotation speed at least once during the first drum operation;
- (d-2) a step of operating the heater to heat water in the tub, performing a second drum operation of rotating the drum at the first drum rotation speed at least once during the operation of the heater, and operating the pump at the second pump rotation speed at least once during the second drum operation, for a time longer than (c-2);
- and
- (d-3) a step of stopping the operation of the heater, performing a third drum operation of rotating the drum at the first drum rotation speed at least once, and operating the pump at the first pump rotation speed at least once during the second drum operation, for a time longer than that in step (c-3),
- wherein a ratio of a stop time of the drum to a rotation time of the drum in step (d-3) is greater than a ratio of a stop time of the drum to a rotation time of the drum in step (c-3).
Dependencies are inferred from the claim text.