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US 11,885,056 B2Granted
Laundry treatment machine
AssigneeLG Electronics Inc.
InventorsJungmoon Je, Kiwook Lee
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a laundry treatment machine. The laundry treatment machine according to an embodiment of the present disclosure includes a controller configured to start dewatering after a first period from completion of drainage when a lift is at a first level, and to start the dewatering after a second period from the completion of the drainage when the lift is at a second level greater than the first level, wherein the second period is longer than the first period. Accordingly, based on the lift, it is possible to change the dewatering entry period after drainage is completed.
Claims16
A laundry treatment machine comprising:
- a washing tub;
- a driver to drive the washing tub;
- a drain pump;
- a motor to drive the drain pump;
- a converter to output a direct current (DC) power;
- an inverter to convert the DC power at a DC terminal into an alternating current (AC) power based on a switching operation and to output the converted AC power to the motor;
- and
- a controller configured to start dewatering after a first period from completion of drainage in response to a lift being at a first level, and to start the dewatering after a second period from the completion of the drainage in response to the lift being at a second level greater than the first level,
- wherein the second period is longer than the first period,
- wherein the lift is a difference between a water level of a water introduction part through which water flows into the drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump,
- wherein the controller is configured to drive the motor with a first power in response to the lift being at the first level during the drainage, and
- the controller is configured to perform the dewatering after the first period in response to a power supplied to the motor being out of a first allowable range based on the first power.
9 more elements
A laundry treatment machine comprising:
- a washing tub;
- a driver to drive the washing tub;
- a drain pump;
- a motor to drive the drain pump a converter to output a direct current (DC) power;
- an inverter to convert the DC power at a DC terminal into an alternating current (AC) power based on a switching operation and to output the converted AC power to the motor;
- and
- a controller configured to start dewatering after a first period from completion of drainage in response to a lift being at a first level, and to start the dewatering after a second period from the completion of the drainage in response to the lift being at a second level greater than the first level,
- wherein the second period is longer than the first period,
- wherein the lift is a difference between a water level of a water introduction part through which water flows into the drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump,
- wherein in response to the lift being at the first level during the drainage, the controller is configured to drive the motor with a power within a first allowable range based on a first power, without decreasing over time, from a first time point after the drainage is started until the completion of the drainage, and
- in response to the lift being at the second level, the controller is configured to drive the motor with a power within the first allowable range based on the first power, without decreasing over time, from the first time point until the completion of the drainage.
8 more elements
A laundry treatment machine comprising:
- a washing tub;
- a driver to drive the washing tub;
- a drain pump;
- a motor to drive the drain pump;
- a converter to output a direct current (DC) power;
- an inverter to convert the DC power at a DC terminal into an alternating current (AC) power based on a switching operation and to output the converted AC power to the motor;
- and
- a controller to change a dewatering entry time point based on a level of a lift, in response to drainage being completed,
- wherein the lift is a difference between a water level of a water introduction part through which water flows into the drain pump and a water level of a water discharge part through which the water is discharged out of the drain pump,
- wherein the controller is configured to perform power control of the motor in response to the drainage being started, and
- wherein the controller is configured to terminate the power control of the motor in response to a residual water level being reached.
8 more elements
Dependencies are inferred from the claim text.