Washing machine and control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsHong Gil HA, Young Jin Hong, Jae Hwan Kim, Myung Sun Kang
Life of this patent
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Abstract
Disclosed herein are a washing machine that may effectively remove residual water remaining at the bottom of a tub after completion of washing, and a control method thereof. A drainage motor is driven to remove residual water remaining at the bottom of a tub when a predetermined time elapses after all washing operations are completed. Thereby, the residual water may be prevented from freezing and thus blocking the drain. Further, the residual water may be removed through a control algorithm, without adding a separate device. Thereby, manufacturing costs may be reduced.
Claims14
A control method of a washing machine including a tub to accommodate water, a drain formed at a bottom of the tub to discharge water, a drainpipe connected to the drain, and a drainage motor installed at the drainpipe to control discharge of the water, the control method comprising:
- determining whether a door of the washing machine is opened after completion of a drying operation;
- counting a door open time of the door when determining that the door is opened;
- determining whether the counted door open time has reached a first time;
- and
- performing a residual water removal operation of removing residual water at the drain by driving the drainage motor when determining that the door open time has reached the first time.
A washing machine comprising:
- a tub to accommodate water;
- a drain formed at a bottom of the tub to discharge water;
- a drainpipe connected to the drain;
- a drainage motor installed at the drainpipe to control discharge of the water;
- a washing tub installed in the tub to accommodate laundry;
- a door to open and close an inlet for introduction of the laundry;
- a door switch to detect opening or closing of the door;
- a controller to count a door open time of the door when determining that the door is opened after completion of a drying operation and to perform a residual water removal operation by driving the drainage motor when determining that the counted door open time has reached a first time.
A control method of a washing machine including a tub to accommodate water, a drain formed at a bottom of the tub to discharge water, a drainpipe connected to the drain, and a drainage motor installed at the drainpipe to control discharge of the water, the control method comprising:
- determining whether a door of the washing machine is opened;
- counting a door open time of the door when determining that the door is opened;
- determining whether the counted door open time has reached a first time;
- and
- performing a residual water removal operation of removing residual water at the drain by driving the drainage motor when determining that the door open time has reached the first time,
- wherein the residual water removal operation is performed after all operations of the washing machine are completed.
A washing machine comprising:
- a tub to accommodate water;
- a drain formed at a bottom of the tub to discharge water;
- a drainpipe connected to the drain;
- a drainage motor installed at the drainpipe to control discharge of the water;
- a washing tub installed in the tub to accommodate laundry;
- a door to open and close an inlet for introduction of the laundry;
- a door switch to detect opening or closing of the door;
- a check switched to detected if the wash tub has been moved while the door is opened;
- a controller determines if the check switch is turned on while the door is open and to count a door open time of the door when determining that the door is opened after the check switch is turn on, to perform a residual water removal operation by driving the drainage motor when determining that the counted door open time has reached a first time.
Dependencies are inferred from the claim text.