KR20210097456A - Laundry Treatment Apparatus and Control Method for the same - Google Patents

Abstract

The present invention provides a control method of a clothing treatment apparatus which can minimize power consumption and shorten dehydration time through a dehydration step capable of minimizing the vibration of a drum. The control method of a clothing treatment apparatus comprises: a water supply step of supplying water to a tub; a water current forming step of forming a water current in a drum rotatably provided in the tub by rotating only an agitator rotatably provided in the drum without rotating the drum; a first draining step of discharging water stored in the tub out of the tub; a first acceleration step of accelerating the drum and the agitator to preset first RPM; a second acceleration step of accelerating the drum and the agitator to first dehydration RPM set to be larger than the first RPM if the vibration of the drum measured during the first acceleration step is lower than or equal to a preset first reference value; a first dehydration step of maintaining the number of revolutions of the drum and the agitator at the first dehydration RPM if the vibration of the drum measured during the second acceleration step is lower than or equal to a preset second reference value; and a second dehydration step of maintaining the number of revolutions of the drum and the agitator at second dehydration RPM set to be larger than the first dehydration RPM if the dehydration vibration value of the drum measured during the first dehydration step is lower than or equal to a preset dehydration reference value. The control method of a clothing treatment apparatus performs: a first acceleration ending step of ending the first acceleration step if the vibration of the drum measured during the first acceleration step is larger than the first reference value; an additional water supply step of supplying water to the tub; a cloth untangling step of alternately performing clockwise rotation and counterclockwise rotation of the agitator; and a second draining step of discharging the water from the tub.

Description

{Laundry Treatment Apparatus and Control Method for the same}

The present application relates to a laundry treatment apparatus and a method for controlling the laundry treatment apparatus.

In general, a laundry treatment apparatus is a concept including an apparatus for washing clothes (a laundry object, an object to be dried), an apparatus for drying clothes, and an apparatus for performing both washing and drying of clothes.

Among the conventional laundry treatment apparatuses, a cabinet, a tub provided in the cabinet to store water, a drum provided in the tub, a stirring unit provided in the drum, a drum rotating shaft rotating the drum, and provided to pass through the drum rotating shaft There was a thing including a rotating shaft of the stirring unit connected to the stirring unit and the rotor of the motor, and a clutch connecting the drum rotating shaft and the rotor. In the conventional laundry treatment apparatus described above, when the clutch is positioned to connect the drum rotating shaft and the rotor, the drum and the stirring unit rotate together, and when the clutch is positioned to separate the drum rotating shaft and the rotor, only the stirring unit rotates.

In the above-described clothes treatment apparatuses, a water supply step of supplying water to the tub, a washing step of rotating the stirring unit to separate dirt from clothes, a rinsing step of removing detergent from clothes by rotating the stirring unit, and draining the water from the tub It was provided to include a draining step to separate the water from the clothes by rotating the drum and the stirring unit in the same direction.

The dehydration step of the conventional laundry treatment apparatus includes a first acceleration step of accelerating the drum to a preset first spin-drying RPM, a first maintenance step of maintaining the rotational speed of the drum at the first spin-drying RPM, and a preset second spin-drying RPM. It was provided to include a second acceleration step of accelerating the drum up to and including a second maintenance step of maintaining the number of revolutions of the drum at the second spin-drying RPM.

In addition, in the conventional laundry treatment apparatus, the vibration of the drum is measured during the second acceleration step, and when the measured vibration exceeds a preset reference value, the drum stops rotating and then the first acceleration step, the first acceleration step, and the second acceleration step are performed. The first maintenance step, the second acceleration step, and the second maintenance step were sequentially re-executed.

When the vibration of the drum during the second acceleration step is severe, the conventional dewatering step of stopping the rotation of the drum and then proceeding with the dewatering step again can solve the problem of increasing the vibration of the drum in the second holding step to some extent. However, the method of stopping the rotation of the drum only during the progress of the second acceleration step has a disadvantage in that it is difficult to expect a great effect when the clothes are tangled severely.

An object of the present application is to provide a clothes treatment apparatus capable of shortening the spin-drying time and minimizing power consumption through a dehydration step capable of minimizing vibration of a drum and a method for controlling the laundry treatment apparatus.

In addition, the present application measures the vibration of the drum for each acceleration step provided in the dewatering step, and when the measured vibration is greater than or equal to a preset reference value, stops the rotation of the drum and then proceeds with the dehydration step again. An object of the present invention is to provide a laundry treatment apparatus capable of minimizing vibration of a drum and a control method of the laundry treatment apparatus.

The present application provides a water supply step of supplying water to the tub; a water flow forming step of rotating only the agitator among the drum rotatably provided in the tub and the stirrer rotatably provided in the drum to form a water flow in the drum; a first draining step of discharging the water stored in the tub to the outside of the tub; a first acceleration step of accelerating the drum and the stirrer to a preset first RPM; a second acceleration step of accelerating the drum and the stirrer to a first dehydration RPM set greater than the first RPM when the vibration of the drum measured during the first acceleration step is less than or equal to a preset first reference value; a first dehydration step of maintaining the number of rotations of the drum and the stirrer at the first dehydration RPM when the vibration of the drum measured during the second acceleration step is less than or equal to a preset second reference value; and if the dewatering vibration value of the drum measured during the first dehydration step is less than or equal to a preset dehydration reference value, the number of rotations of the drum and the stirrer is maintained at a second dehydration RPM set greater than the first dehydration RPM. a second dehydration step; and, when the vibration of the drum measured during the first acceleration step is greater than the first reference value, a first acceleration termination step of terminating the first acceleration step, water in the tub An additional water supply step of supplying an additional water supply step, a popping step of alternating clockwise and counterclockwise rotation of the stirrer, and a second draining step of discharging the water inside the tub to the outside of the tub; proceed To provide a method for controlling a laundry treatment apparatus.

a tub in which water is stored; a drum rotatably provided inside the tub to store clothes; a stirrer rotatably provided inside the drum; a drum rotating shaft provided to be perpendicular to the bottom surface of the tub to rotate the drum; an agitator rotating shaft provided to pass through the drum rotating shaft to rotate the stirrer; In the control method of a laundry treatment apparatus comprising a; and a vibration sensing unit for measuring the vibration of the tub, the present application provides a water supply step of supplying water to the tub; a water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow in the drum; a first draining step of discharging the water stored in the tub to the outside of the tub; a first acceleration step of accelerating the drum and the stirrer to a preset first RPM; a second acceleration step of accelerating the drum and the stirrer to a first dehydration RPM set greater than the first RPM when the vibration of the drum measured during the first acceleration step is less than or equal to a preset first reference value; a first dehydration step of maintaining the number of rotations of the drum and the stirrer at the first dehydration RPM when the vibration of the drum measured during the second acceleration step is less than or equal to a preset second reference value; and if the dewatering vibration value of the drum measured during the first dehydration step is less than or equal to a preset dehydration reference value, the number of rotations of the drum and the stirrer is maintained at a second dehydration RPM set greater than the first dehydration RPM. A second dehydration step; provides a control method of a laundry treatment apparatus comprising a.

If the vibration of the drum measured during the first acceleration step is greater than the first reference value, the control method includes a first acceleration end step for terminating the first acceleration step, and additional water supply for supplying water to the tub steps, and a popping step of alternating clockwise and counterclockwise rotation of the stirrer, and a second draining step of discharging the water inside the tub to the outside of the tub; may be performed.

The control method may be provided to resume the first acceleration step after completion of the second draining step.

When the vibration of the drum measured during the second acceleration step is greater than the second reference value, the control method may be provided to stop the second acceleration step and then resume the first acceleration step.

The control method may further include a dehydration and drainage step of discharging the water stored in the tub to the outside of the tub during the first dehydration step.

The control method includes a laundry weight determination step of measuring the amount of clothes stored in the drum by rotating the drum and the stirrer in the same direction after the completion of the first draining step and before the start of the first acceleration step. and the first reference value, the second reference value, and the dehydration reference value may be set based on the amount of clothing measured in the weight determination step.

The first reference value may be set to be greater than the second reference value, and the second reference value may be set to be greater than the dehydration reference value.

If the vibration of the drum measured during the second acceleration step is greater than the second reference value, the control method stops the second acceleration step and then the first draining step, the laundry weight determination step, and the second 1 may be provided to resume the acceleration step.

The control method may further include a dispersing step of dispersing the clothes inside the drum by rotating the stirrer at an RPM set lower than the first RPM, which is performed after the completion of the weight determination step and before the start of the first acceleration step. can

The dispersing step may be provided to repeat clockwise and counterclockwise rotation of the stirrer.

When the dewatering vibration value of the drum measured during the first dehydration step is greater than the dewatering reference value, the control method may be provided to restart the first accelerating step after the first dewatering step is terminated.

If the dewatering vibration value of the drum measured during the first dehydration step is greater than the dewatering reference value, the control method includes the additional water supply step, the foaming step, and the second water supply step after the first dehydration step is completed. It may be provided to sequentially resume the draining step.

a tub in which water is stored; a drum rotatably provided inside the tub to store clothes; a stirrer rotatably provided inside the drum; a drum rotating shaft provided to be perpendicular to the bottom surface of the tub to rotate the drum; an agitator rotating shaft provided to pass through the drum rotating shaft to rotate the stirrer; In the control method of a laundry treatment apparatus comprising a; and a vibration sensing unit for measuring the vibration of the tub, the present application provides a water supply step of supplying water to the tub; a water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow in the drum; a first draining step of discharging the water stored in the tub to the outside of the tub; a first acceleration step of accelerating the drum and the stirrer to a preset first RPM; a second acceleration step of accelerating the drum and the stirrer to a second RPM set greater than the first RPM when the vibration of the drum measured during the first acceleration step is less than or equal to a preset first reference value; a third acceleration step of accelerating the drum and the stirrer to a first dehydration RPM set greater than the second RPM when the vibration of the drum measured during the second acceleration step is less than or equal to a preset second reference value; a first dehydration step of maintaining the number of revolutions of the drum and the stirrer at the first dehydration RPM when the vibration of the drum measured during the third acceleration step is less than or equal to a preset third reference value; and if the dewatering vibration value of the drum measured during the first dehydration step is less than or equal to a preset dehydration reference value, the number of rotations of the drum and the stirrer is maintained at a second dehydration RPM set greater than the first dehydration RPM. A second dehydration step; provides a control method of a laundry treatment apparatus comprising a.

When the vibration of the drum measured during the first acceleration step is greater than the first reference value, the control method includes a first acceleration termination step of terminating the first acceleration step, and a first supplying water to the tub. It may be provided to proceed with an additional water supply step, a first unwinding step of alternately performing clockwise and counterclockwise rotation of the stirrer, and a second draining step of discharging the water from the tub to the outside of the tub there is.

If the vibration of the drum measured during the second acceleration step is greater than the second reference value, the control method includes a second acceleration termination step of terminating the second acceleration step, and a second step of supplying water to the tub. It may be provided to proceed with an additional water supply step, a second foam unwinding step of alternately performing clockwise and counterclockwise rotation of the stirrer, and a third drain step of discharging the water from the tub to the outside of the tub there is.

The first accelerating step may be provided to resume when the second draining step is completed or when the third draining step is completed.

The amount of water supplied to the tub in the first additional water supply step may be set to be greater than the amount of water supplied to the tub in the second additional water supply step.

The operation time of the stirrer set in the first foam unwinding step may be set longer than the operation time of the stirrer set in the second foam unwinding step.

The number of rotations of the stirrer set in the first foam unwinding step may be set to be greater than the number of rotations of the stirrer set in the second foam unwinding step.

If the vibration of the drum measured during the third acceleration step is greater than the third reference value, the third acceleration step may be stopped and then the first acceleration step may be resumed.

If the vibration of the drum measured during the third acceleration step is greater than the third reference value, the control method stops the third acceleration step and then restarts the first draining step and the first acceleration step may be provided to do so.

The control method includes a laundry weight determination step of measuring the amount of clothes stored in the drum by rotating the drum and the stirrer in the same direction after the completion of the first draining step and before the start of the first acceleration step. and the first reference value, the second reference value, the third reference value, and the dehydration reference value may be set based on the amount of clothing measured in the weight determination step.

The present application has the effect of providing a clothes treatment apparatus capable of shortening the spin-drying time and minimizing power consumption through a dehydration step capable of minimizing the vibration of the drum and a control method of the laundry treatment apparatus.

In addition, the present application measures the vibration of the drum for each acceleration step provided in the dewatering step, and when the measured vibration is greater than or equal to a preset reference value, stops the rotation of the drum and then proceeds with the dehydration step again. It is effective to provide a laundry treatment apparatus capable of minimizing vibration of a drum and a control method of the laundry treatment apparatus.

1 illustrates an example of a laundry treatment apparatus.
2 shows an example of a driving unit.
3 and 4 show an example of an operation process of the driving unit.
5 is a diagram illustrating an example of a control method of the laundry treatment apparatus.
6 is a diagram illustrating another embodiment of a method for controlling a laundry treatment apparatus.

Hereinafter, a preferred embodiment of the laundry treatment apparatus will be described in detail with reference to the drawings. The configuration or control method of the device to be described below is only for explaining the embodiment of the present application and not for limiting the scope of the present application, and the same reference numbers used throughout the specification indicate the same components .

As shown in FIG. 1 , the laundry treatment apparatus 100 includes a cabinet 1 , a tub 2 provided in the cabinet to store water, and a drum 3 rotatably provided in the tub to store clothes. ), including a stirrer (4) rotatably provided inside the drum.

The cabinet 1 may be provided to form the exterior of the laundry treatment apparatus, and an inlet 11 is provided on the upper surface. The inlet 11 is opened and closed by a door 13 rotatably fixed to the cabinet 1 .

The cabinet 1 may include a control panel 15 for inputting a control command to the laundry treatment apparatus 100 and displaying information related to control of the laundry treatment apparatus. The control panel 15 may include a display unit 151 for displaying information such as a course selectable by a user, and a power switch 153 for supplying power to the laundry treatment apparatus. In addition, the control panel 15 includes a first input unit 155 for selecting a control command displayed on the display unit, and a second input unit 157 for enabling a user to request execution of a control command selected through the first input unit. may be provided.

The tub 2 includes a tub body 21 provided inside the cabinet 1 to store water, and a tub inlet provided on an upper surface of the tub body 21 to communicate the inside of the tub body with the outside ( 23) is provided to include.

The tub body 21 may be provided in a cylindrical shape with an empty interior, and is fixed to the cabinet 1 through the tub support part 22 . The tub inlet 23 is provided to be positioned below the inlet 11 .

The tub 2 receives water through a water supply unit, and discharges water stored in the tub 2 through a drain unit to the outside of the cabinet 1 . The water supply unit may be provided with a water supply pipe 24 connected to a water supply source, and a valve 25 for opening and closing the water supply pipe 24 according to a control signal from a control unit.

The water supply pipe 24 may be provided to supply water to the tub body 21 through the tub inlet 23 , and to a water supply hole (not shown) provided to pass through the upper surface of the tub body 21 . It may be provided to be connected. 1 shows the former as an example.

The drain unit includes a pump 27 , a first drain pipe 26 for guiding water inside the tub body 21 to the pump 27 , and a water discharged from the pump 27 to the outside of the cabinet 1 . It may be provided as a second drain pipe 28 to guide.

In order to detect the water level inside the tub body 21 , the tub 2 may further include a water level detecting unit 29 . The water level sensing unit 29 may be provided in any shape as long as it can detect the water level inside the tub body 21 . In FIG. 1 , the water level sensing unit 29 uses the pressure of the tub body 21 . A case provided to determine the water level is shown as an example.

The drum 3 provided inside the tub 2 may be provided as a cylindrical drum body 31 having a drum inlet 33 on its upper surface. Since the drum inlet 33 is located below the tub inlet 23 , the clothes supplied through the inlet 11 are supplied to the drum body 31 through the tub inlet 23 and the drum inlet 33 . will be supplied with A plurality of drum through-holes 32 are provided on the bottom and circumferential surfaces of the drum body 31 . The inner space of the drum body 31 communicates with the inner space of the tub body 21 through the drum through hole 32 .

The laundry treatment apparatus 100 is provided to include a stirrer 4 rotatably provided on the drum body 3 to form a water flow in the drum body. 1 illustrates a case in which the stirrer 4 is rotatably provided on the bottom surface of the drum body 31 as an example. The stirrer 4 according to this embodiment is a hub 41 forming a center of rotation. , may be provided with a plurality of arms 43 fixed to the hub. The plurality of arms 43 may be provided as a plurality of bars radially protruding from the hub 41 toward the circumferential surface of the drum body 31 .

The drum body 31 and the stirrer 4 are rotated by a driving unit 5 . The driving unit 5 includes a stator 52 fixed to the outside of the tub body 21 to form a rotating magnetic field, a rotor 53 provided outside the tub body 21 to rotate by the rotating magnetic field, It is provided to penetrate the bottom surface of the tub body, one end is fixed to the drum body 31, and the free end is a drum rotation shaft (first rotation shaft, 54) positioned outside the tub body 21, the first rotation shaft It is provided to pass through 54, and one end is fixed to the rotor 53, and the other end includes a stirrer rotating shaft (second rotating shaft, 55) fixed to the hub 41 of the stirrer.

The stator 52 may be provided in a ring shape, and is provided to include a coil that forms a rotating magnetic field when current is supplied. The stator 52 may be directly fixed to the bottom surface of the tub body 21 or may be provided to be fixed to the support part 51 fixed to the tub body.

The rotor 53 is provided in a cylindrical shape with one surface open, and the circumferential surface of the stator 52 is provided to face the inner circumferential surface of the rotor 53 . A plurality of permanent magnets 351 are provided on the inner circumferential surface of the rotor, and the permanent magnets 351 must be fixed to the inner circumferential surface of the rotor so that N poles and S poles are alternately exposed.

As shown in FIG. 2 , the first rotating shaft 54 is provided to pass through a shaft body 541 provided to penetrate the bottom surface of the tub body 21 , and the shaft body 541 to pass through the shaft body. A shaft through-hole 543 provided along the longitudinal direction (Y-axis direction) of It may be provided to include. The drum fastening part 545 may be provided as a disk fixed to the shaft body 541 .

A first shaft gear 547 provided along a longitudinal direction (Y-axis direction) of the first rotation shaft is provided on a circumferential surface of the shaft body 541 . The first shaft gear 547 should be provided in a space exposed to the outside of the tub body 21 among the spaces provided by the shaft body 541 . FIG. 2 illustrates an example in which the first shaft gear 547 is provided at the free end of the shaft body 541 .

The second rotation shaft 55 is inserted into the shaft through hole 543 , and one end is fixed to the hub 41 , and the other end is fixed to the rotor 53 . The second rotation shaft 55 may be rotatably fixed to the first rotation shaft 54 by being inserted into the bearing 551 fixed inside the shaft through hole 543 .

The second rotation shaft 55 always maintains a state connected to the rotor 53, but the first rotation shaft 54 may be connected to the rotor 53 by a power transmission unit T, and the rotor ( 53) can also be isolated.

The power transmission unit T includes a stopper 56 fixed to the bottom surface of the tub body 21 , a fixing unit 57 provided in the rotor 53 to which the second rotation shaft 55 is fixed, and the It may be provided to include a clutch 58 provided to reciprocate between the stopper 56 and the fixing part 57 in a state coupled to the first shaft gear 547 .

1 , the stopper 56 may be fixed to the bottom surface of the tub body through the support part 51 . As shown in FIG. 2 , the stopper 56 is provided to pass through the stopper body 561 fixed to the support part 51 and the stopper body, and the stopper through-hole 563 into which the shaft body 541 is inserted. ), the stopper body 561 may be provided to include a first fastening portion 565 to which the upper surface of the clutch 58 is fixed. FIG. 2 illustrates a case in which the first fastening part 565 is provided with a plurality of grooves provided along the edge of the stopper through hole 563 as an example.

The fixing part 57 is fixed to the bottom surface of the rotor 53, the fixing body 571 to which one end of the second rotation shaft 55 is fixed, the fixing body 571 in the height direction of the fixing body ( Y-axis direction) may be provided to include the second axis gear 575 provided along.

The second shaft gear 575 is provided to surround the circumferential surface of the second rotation shaft 55 , and the diameter of the second shaft gear 575 is set to be the same as the diameter of the first shaft gear 547 . It is preferable to be

The fixed body 571 may further include a second fastening portion 573 to which the lower surface of the clutch 58 is fixed. The second fastening portion 573 may be provided on the fixed body 571 and may be provided with a plurality of protrusions disposed to surround the second shaft gear 575 .

The clutch 58 is provided to pass through the clutch body 581 positioned between the first fastening part 565 and the second fastening part 573, the clutch body, into which the first rotating shaft 54 is inserted. It includes a clutch through hole 587 and a clutch gear 589 provided in the clutch through hole 587 and fastened to the first shaft gear 547 .

Since the clutch body 581 maintains a state connected to the first rotation shaft 54 through the first shaft gear 547 and the clutch gear 589, the clutch body 581 is connected to the first rotation shaft ( 54) is movable along the height direction (Y-axis direction).

The clutch gear 589 connects the first shaft gear 547 and the second shaft gear 575 according to the position of the clutch body 581 . That is, when the clutch body 581 moves toward the rotor 53 , the upper end of the clutch gear 589 remains connected to the first shaft gear 547 , and The lower end may maintain a state connected to the second shaft gear 575 .

A clutch first fastening part 583 that is detachably coupled to the first fastening part 565 is provided on the upper surface of the clutch body 581 , and the second fastening part 583 is provided on the lower surface of the clutch body 581 . A clutch second fastening part 585 detachably coupled to the part 573 is provided.

The clutch first fastening part 583 is provided such that a plurality of protrusions protruding from the upper surface of the clutch body 581 are arranged to form a ring, and the clutch second fastening part 585 is the clutch body 581 . ), a plurality of grooves provided on the lower surface may be provided by being arranged to form a ring.

When the first coupling part 583 of the clutch is coupled to the first coupling part 565, the clutch gear 589 is in a state in which the first shaft gear 547 and the second shaft gear 575 are separated ( (a state in which the first rotating shaft and the rotor are separated). On the contrary, when the clutch second fastening part 585 is coupled to the second fastening part 573 , the clutch gear 589 is connected to the first shaft gear 547 and the second shaft gear 575 . A state (a state in which the first rotational shaft and the rotor are connected) is created.

3 and 4 , the power transmission unit T having the above-described structure is reciprocable between the first point P1 and the second point P2 through the clutch transfer units 59a and 59b. The first point P1 is a point at which the first shaft gear 547 and the second shaft gear 575 are maintained in a separated state, and the second point P2 is the first shaft gear 547 . ) and the second shaft gear 575 are maintained in a connected state.

1, the clutch transfer unit may be provided to include a motor 59a for generating a rotational force, and a power conversion unit 59b for converting the rotational force of the motor into a linear reciprocating motion of the clutch 58. there is.

As shown in FIG. 3 , the power conversion unit 59b includes a rotating plate 592 rotating by a rotating shaft 591 of the motor, a connecting bar 593 connected to the rotating plate, and a housing by the connecting bar 593 . A piston 595 reciprocating linearly inside 596 may be provided to include an operation bar 597 having one end connected to the piston 595 and the other end supporting the clutch body 581 .

The operation bar 597 may be provided to include a clutch support portion 597a supporting the lower surface of the clutch body 581 and a piston connecting portion 597b connecting the clutch support portion 597a and the piston 595 to each other. can The operation bar 597 is rotatably fixed to the support part 51 through a bar rotation shaft 598 . In FIG. 3 , the bar rotation shaft 598 rotates the clutch support part 597a to the support part 51 . A case in which it is possible is shown as an example. Through the rotation of the rotating plate 592, the clutch 58 will repeat the state of FIG. 3 and the state of FIG.

That is, when the rotating plate 592 in the state of FIG. 3 is rotated by the motor 59a, the piston 595 pushes the piston connecting portion 597b in the direction of the first rotational shaft 54 . When the piston connecting part 597b moves toward the first rotational shaft 54, the free end of the clutch support part 597a moves in a direction away from the stopper 56, and in this process, the clutch 58 engages the It will move until it is connected to the fixing part 57 (state of FIG. 4, it will move until it reaches the second point). When electric power is supplied to the stator 52 in this state, only the agitator among the drum 3 and the agitator 4 will rotate.

In addition, when the rotating plate 592 in the state of FIG. 4 rotates, the piston 595 moves the piston connecting portion 597b in a direction away from the first rotating shaft 54 . When the piston connection part 597b moves in a direction away from the first rotation shaft 54, the free end of the clutch support part 597a moves toward the stopper 56, and in this process, the clutch 58 moves the It will move until it connects to the stopper 56 (state of FIG. 3, it will move until it reaches the first point). When electric power is supplied to the stator 52 in this state, the drum 3 and the stirrer 4 will rotate in the same direction.

The laundry treatment apparatus 100 is provided with a vibration sensing unit 6 that measures vibration generated when the drum 3 rotates. The vibration sensing unit 6 may be provided to detect the number of rotations of the rotor 53 to measure the vibration of the drum, and the vibration of the drum 3 by measuring the vibration of the tub 2 . It may be provided to estimate . 1 illustrates an example in which the vibration sensing unit 6 is fixed to the tub body 21 to estimate the vibration of the drum.

5 is a diagram illustrating an example of a control method of the laundry treatment apparatus. The control method of FIG. 5 is a water supply step (S10) of supplying water to the tub body 21 by controlling the valve 25 of the water supply part, and rotating only the stirrer among the drum 3 and the stirrer 4 and a water flow forming step (S20) of forming a water flow inside the drum (3).

The water flow forming step (S20) is a process of forming a water flow inside the drum 3 to separate foreign substances or detergents from the clothes. proceed with In the water flow forming step ( S20 ), the clutch 58 is located at a first point P1 that maintains the separated state between the first rotation shaft 54 and the rotor 53 . In addition, in the water flow forming step (S20), the stirrer 4 is preferably controlled to repeat clockwise rotation and counterclockwise rotation.

During the process of the water flow forming step (S20), the control method determines whether the running time of the water flow forming step reaches a preset time (S25). When the running time of the water flow forming step (S20) reaches the set time, the control method operates the pump 27 of the drain unit to discharge the water stored in the tub 2 to the outside of the cabinet 1 A first draining step (S30) is performed.

After completion of the first draining step (S30), the control method proceeds to the dewatering steps (S50, S71, S80, S90). The dehydration step is an acceleration step (S50) of accelerating the drum 3 and the stirrer 4 to a preset first dehydration RPM in the same direction (S50), and the number of rotations of the drum 3 and the stirrer 4 is set to the first The first dehydration step of maintaining the dehydration RPM (S71), the step of accelerating the drum 3 and the stirrer 4 to a preset second dehydration RPM (S80), and the drum 3 and the stirrer 4 It may be provided to include a second spin-drying step (S90) of maintaining the rotation speed at the second spin-drying RPM (set to a rotation speed greater than the first spin-drying RPM).

In the dehydration step (S50, S71, S80, S90), since the drum 3 and the stirrer 4 must rotate in the same direction at the same time, the clutch 58 is connected to the first rotation shaft 54 and the rotor 53 ) is located at the second point P2 to maintain the combined state.

The accelerating step (S50) is a first accelerating step (S51) of accelerating the drum 3 and the stirrer 4 to a preset first RPM (the number of revolutions set smaller than the first spin-drying RPM), the drum 3 and It may be provided to include a second acceleration step (S54) of accelerating the stirrer 4 from the first RPM to the first dehydration RPM.

The control method proceeds with a first measurement step (S52) in which the vibration sensing unit 6 measures the vibration of the drum 3 during the first acceleration step (S51). When the first measuring step (S52) is completed, the control method proceeds to a step (S53) of comparing the first vibration value measured in the first measuring step (S52) with a preset first reference value. The second acceleration step (S54) is preferably provided to start when the first vibration value is equal to or less than the first reference value.

On the other hand, if the first vibration value is greater than the first reference value, the control method is a first acceleration end step (S531) to end the first acceleration step, by controlling the valve 25 to the tub (2) An additional water supply step (S533) of supplying water into It may be provided to proceed with the second draining step (S537). In order to proceed with the unpacking step ( S535 ), the clutch 58 must move to a first point P1 at which the first rotation shaft 54 and the rotor 53 are maintained in a separated state. When the second draining step S537 is completed, the control method resumes the first accelerating step S51.

The control method proceeds with a second measurement step (S55) in which the vibration sensing unit 6 measures the vibration of the drum while the second acceleration step (S54) is in progress. When the second measuring step (S55) is completed, the control method proceeds to a step (S56) of comparing the second vibration value measured in the second measuring step (S55) with a preset second reference value.

If the second vibration value is equal to or less than the second reference value, the control method proceeds to the first dehydration step (S71). However, if the second vibration value is greater than the second reference value, the control method stops the rotation of the drum 3 and the stirrer 4 to temporarily terminate the dehydration step (S60). ) is carried out. When the dehydration stopping step S60 is completed, the control method may be provided to resume the first accelerating step S51 or to resume the first draining step S30.

The first dehydration step (S71) is a step of maintaining the rotational speed of the drum and the stirrer at the first dehydration RPM, and the control method is the pump 27 of the drain unit during the first dehydration step (S71). can be controlled to perform a dehydration and drainage step (S75) of discharging the water inside the tub to the outside of the cabinet.

In addition, the control method proceeds with a dehydration vibration measurement step (S73) of measuring the vibration of the drum (3) during the first dehydration step (S71). When the step of measuring the spin-drying vibration (S73) is completed, the control method proceeds to a step (S77) of comparing the measured spin-drying vibration value with a preset spin-drying reference value.

If the measured dehydration vibration value is less than or equal to the dehydration reference value, the control method includes accelerating the rotational speed of the drum and the stirrer to the second dehydration RPM (S80), and a second dehydration maintaining the second dehydration RPM. It proceeds to step S90. The second dehydration step (S90) is terminated (S95) when a preset dehydration period has elapsed.

However, if the measured dewatering vibration value is greater than the dewatering reference value, the control method is provided to complete the rotation of the drum and the stirrer (S60) and then proceed with the draining step (S30) or the first acceleration step (S51) can be On the other hand, if the measured dewatering vibration value is greater than the dewatering reference value, the control method ends the rotation of the drum and the stirrer (S531) and then the additional water supply step (S533), the foaming step (S535), and the first It may be provided to proceed with the double draining step (S537). The first accelerating step S51 is resumed after the second draining step S537 is completed.

The first reference value, the second reference value, and the spin-drying vibration reference value may be set differently according to the amount of clothes (weight) stored in the drum 3 . To determine the laundry weight, the control method may further include a laundry weight determination step ( S40 ). In the laundry weight determination step (S40), the amount of current supplied to the stator 52 or the number of revolutions of the drum 3 to rotate the drum 3 and the stirrer 4 by a preset rotation angle is set to a preset rotation. It may be provided as a process of determining the amount of clothing by measuring the amount of current supplied to the stator 52 in order to accelerate up to the number.

The first reference value, the second reference value, and the dehydration reference value are determined as reference values performed between the weight determination step (S40) and the step (S53) of comparing the first vibration value with the first reference value It may be provided to be set through each step.

The laundry weight determination step (S40) may be performed at any time if no water is stored in the tub (2). Accordingly, the laundry weight determination step ( S40 ) may be provided before the water supply step ( S10 ) or may be provided to proceed after the completion of the draining step ( S30 ). Also, the laundry weight determination step (S40) may be performed before the water supply step (S10) and after the drain step (S30) is completed, respectively. The water supply step ( S10 ) may be provided to supply water up to a reference water level set differently according to the amount of clothes put into the drum 3 .

Although not shown in the drawings, the control method includes clockwise rotation and counterclockwise rotation of the stirrer at an RPM set lower than the first RPM before the first acceleration step S51 after completion of the laundry weight determination step S40. It may further include a dispersion step of alternately executing the direction rotation. This is to disperse the clothes inside the drum 3 before the start of the acceleration step S50.

The first reference value may be set to be greater than the second reference value, and the second reference value may be set to be greater than the dehydration reference value. That is, the dehydration reference value may be set to a smallest value, and the first reference value may be set to a largest value. As the dehydration step (S50, S71, S80) proceeds, the rotational speed of the drum 3 increases, and as the rotational speed of the drum increases, a fine change in rotational inertia (distribution of mass relative to the rotational axis of the drum) This is because the drum can vibrate greatly even when (changes from a symmetric state to an asymmetric state).

Although not shown in FIG. 5 , the control method may further include measuring the vibration of the drum while accelerating the drum and the stirrer to the second dehydration RPM. In this case, the second dehydration step (S90) may be started when the second dehydration vibration value measured while the drum and the stirrer are accelerated to the second dehydration RPM is less than or equal to a preset second dehydration reference value.

On the other hand, if the second dehydration vibration value is greater than the preset second dehydration reference value, the control method restarts the first acceleration step (S51) or the additional water supply step (S533) after stopping the rotation of the drum and the stirrer may be provided to do so.

6 is a diagram illustrating another embodiment of a method for controlling a laundry treatment apparatus.

The control method according to this embodiment also includes a water supply step (S10), a water flow forming step (S20, S25) for a set time, a first draining step (S30), a laundry weight determination step (S40), and a dehydration step (S50, S71) , S80, S90).

The water supply step (S10), the water flow forming step (S20, S25), the first drain step (S30), and the laundry weight determination step (S40) are the same as each step provided in the embodiment of FIG. 5 , so detailed descriptions will be omitted. .

The dehydration step of FIG. 6 includes an acceleration step (S50) of accelerating the drum and agitator to a preset first dehydration RPM, a first dehydration step (S71) of maintaining the rotational speed of the drum and agitator at the first dehydration RPM (S71), the A step of accelerating the drum and agitator to the second dehydration RPM (S80), and a second dehydration step (S90) of maintaining the rotation speed of the drum and the stirrer at a second dehydration RPM set to a rotation speed greater than the first dehydration RPM include

The acceleration step is a first acceleration step (S51) of accelerating the drum 3 and the stirrer 4 to a first RPM (set to a rotation speed smaller than the first dehydration RPM), the drum and the stirrer than the 1RM It may be provided to include a second acceleration step (S54) of accelerating to a large set P second RPM, and a third acceleration step (S57) of accelerating the drum and the stirrer to the first spin-drying RPM.

The control method is a first measurement in which the vibration sensing unit 6 measures the vibration of the drum during the first acceleration step (S51), the second acceleration step (S54), and the third acceleration step (S57). Step S52, the second measurement step S55, and the third measurement step S58 are performed.

In this case, the second acceleration step (S54) is started when the first vibration value measured in the first measurement step (S52) is equal to or less than a preset first reference value (S53), and the third acceleration step (S57) ) is started when the second vibration value measured in the second measurement step (S55) is less than or equal to a preset second reference value (S56), and the first dehydration step (S71) is performed in the third measurement step (S58) It may be provided to start when the measured third vibration value is less than or equal to a preset third reference value (S59).

If the first vibration value measured in the first measuring step (S52) is greater than the first reference value, the control method includes a first acceleration end step (S531) of terminating the first acceleration step (S51), the valve A first additional water supply step (S533) of supplying water to the tub (2) by controlling (25), a first unwinding step of alternately performing clockwise and counterclockwise rotation of the stirrer (4) (S535), and may be provided to proceed with a second draining step (S537) of draining the water supplied in the first additional water supply step. When the second draining step S537 is completed, the control method may be provided to resume the first accelerating step S51.

If the second vibration value measured in the second measuring step (S55) is greater than the second reference value, the control method includes a second acceleration end step (S561) of terminating the second acceleration step (S54), the valve A second additional water supply step (S563) of controlling (25) to supply water to the tub (2), a second unwinding step of alternately performing clockwise and counterclockwise rotation of the stirrer (4) (S565), and a third draining step (S567) of draining the water supplied in the second additional water supply step may be provided to proceed. When the third draining step S567 is completed, the control method may be provided to resume the first accelerating step S51.

If the third vibration value measured in the third measuring step (S58) is greater than the third reference value, the control method stops the rotation of the drum 3 and the stirrer 4 to temporarily stop the progress of the dehydration step. The dehydration stop step (S60) is performed. When the dehydration stopping step S60 is completed, the control method may be provided to resume the first accelerating step S51 or to resume the first draining step S30.

The first reference value, the second reference value, the third reference value, and the dehydration reference value may be set based on the amount of clothing measured in the weight determination step. The first reference value, the second reference value, the third reference value, and the dehydration reference value are determined between the weight determination step (S40) and the step of comparing the first vibration value with the first reference value (S53). It may be provided so as to be respectively set through the executed reference value determination step.

That is, the first reference value may be set greater than the second reference value, the second reference value may be set greater than the third reference value, and the third reference value may be set greater than the dehydration reference value. .

In addition, considering that the degree of dispersion of the clothes in the drum becomes more uniform in the first accelerating step (S51) toward the third accelerating step (S57), the second additional water supply step (S563) is applied to the tub. The amount of supplied water may be set to be less than the amount of water supplied to the tub in the first additional water supply step (S533).

For the same reason, the operating time, number of rotations, rotation angle, etc. of the stirrer 4 set in the second foam unwinding step (S565) is the operation time of the stirrer (S4) set in the first foam unwinding step (S535), It can be set shorter than the number of rotations and rotation angles.

After completion of the above-described acceleration step (S50), the control method proceeds to the first dehydration step (S71). During the first dehydration step (S71), in the control method according to the present embodiment, a dehydration vibration measuring step (S73) and a dehydration/draining step (S75) of measuring dehydration vibration may be performed. Since the dewatering vibration measuring step (S73) and the dewatering/draining step (S75) have been described in the embodiment of FIG. 5 , a detailed description thereof will be omitted.

If the dehydration vibration value measured in the dewatering vibration measuring step (S73) is less than or equal to a preset dehydration reference value, the control method of FIG. 6 accelerates the rotational speed of the drum and stirrer to the second spin-drying RPM and then maintains it for a set time (S80, S90, S95).

Although not shown in the drawings, the control method of FIG. 6 may further include a fourth measuring step of measuring the vibration of the drum while accelerating the drum and the stirrer to the second dehydration RPM. In this case, the second dehydration step S90 may be started when the second dehydration vibration value measured in the fourth measurement step is less than or equal to a preset second dehydration reference value.

On the other hand, if the second dehydration vibration value is greater than a preset second dehydration reference value, the control method may be provided to restart the first acceleration step (S51) after stopping the rotation of the drum and the stirrer, It may be provided to resume any one of the first additional water supply step (S533) and the second additional water supply step (S563).

The control methods of FIGS. 5 and 6 measure the vibration of the drum several times during the progress of the acceleration step (S50), and perform the foaming step several times according to the magnitude of the measured vibration, so that the second spin-drying RPM It is possible to attenuate the vibration of the drum more effectively compared to the conventional control methods that measure the vibration of the drum only during acceleration. Accordingly, the present application can provide a laundry treatment apparatus capable of shortening the spin-drying time and minimizing power consumption through the above control methods.

The above-described laundry treatment apparatus and the method for controlling the laundry treatment apparatus may be modified and implemented in various forms, but the scope of the rights of the present application is not limited to the above-described embodiments.

100: clothes processing device 1: cabinet 15: control panel
2: tub 21: tub body 23: tub inlet
24: water supply pipe 29: water level detection unit 3: drum
4: agitator 5: drive part 51: support part
52: stator 53: rotor 54: first rotational shaft
541: shaft body 543: shaft through hole 545: drum fastening part
547: first shaft gear 55: second rotation shaft 551: bearing
T: power transmission unit 56: stopper 561: stopper body
563: stopper through hole 565: first fastening part 57: fixing part
571: fixed body 573: second fastening part 575: second shaft gear
58: clutch 581: clutch body 583: clutch first fastening part
585: clutch second fastening part 587: clutch through hole 589: clutch gear
59a: motor 59b: power conversion unit 591: motor rotating shaft
592: rotating plate 593: connecting bar 594: bending groove
595: piston 596: housing 597: actuation bar
598: bar rotation shaft 6: vibration sensing unit

Claims (19)

a tub in which water is stored; a drum rotatably provided inside the tub to store clothes; a stirrer rotatably provided inside the drum; a drum rotating shaft provided to be perpendicular to the bottom surface of the tub to rotate the drum; an agitator rotating shaft provided to pass through the drum rotating shaft to rotate the stirrer; and a vibration sensing unit configured to measure the vibration of the tub.
a water supply step of supplying water to the tub;
a water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow in the drum;
a first draining step of discharging the water stored in the tub to the outside of the tub;
a first acceleration step of accelerating the drum and the stirrer to a preset first RPM;
a second acceleration step of accelerating the drum and the stirrer to a first dehydration RPM set greater than the first RPM when the vibration of the drum measured during the first acceleration step is less than or equal to a preset first reference value;
a first dehydration step of maintaining the number of rotations of the drum and the stirrer at the first dehydration RPM when the vibration of the drum measured during the second acceleration step is less than or equal to a preset second reference value; and
If the dewatering vibration value of the drum measured during the first dehydration step is less than or equal to a preset dehydration reference value, the second dehydration RPM set to be greater than the first dehydration RPM by rotating the drum and the stirrer 2 dehydration step; including,
a first acceleration end step of terminating the first acceleration step when the vibration of the drum measured during the first acceleration step is greater than the first reference value; an additional water supply step of supplying water to the tub; and a popping step of alternating clockwise rotation and counterclockwise rotation of the stirrer; and a second draining step of discharging the water inside the tub to the outside of the tub. According to claim 1,
and restarting the first accelerating step after the second draining step is completed. 3. The method of claim 2,
If the vibration of the drum measured during the second acceleration step is greater than the second reference value, the second acceleration step is stopped and then the first acceleration step is restarted. . 3. The method of claim 2,
and a dehydration and drainage step of discharging the water stored in the tub to the outside of the tub during the first dehydration step. 3. The method of claim 2,
After completion of the first draining step, before the start of the first acceleration step, the laundry weight determination step of measuring the amount of clothes stored in the drum by rotating the drum and the stirrer in the same direction;
The method according to claim 1, wherein the first reference value, the second reference value, and the dehydration reference value are set based on the amount of clothing measured in the weight determination step. 6. The method of claim 5,
The method of claim 1, wherein the first reference value is set to be greater than the second reference value, and the second reference value is set to be greater than the dehydration reference value. 6. The method of claim 5,
If the vibration of the drum measured during the second acceleration step is greater than the second reference value, the first draining step, the laundry weight determination step, and the first acceleration step are performed after stopping the second acceleration step. A method of controlling a laundry treatment apparatus, characterized in that it is restarted. 6. The method of claim 5,
Dispersing step of dispersing the clothes inside the drum by rotating the stirrer at an RPM set lower than the first RPM, which is performed after the completion of the weight determination step and before the start of the first acceleration step A method of controlling a clothes treatment device. 9. The method of claim 8,
The dispersing step is a control method of a laundry treatment apparatus, characterized in that provided to repeat clockwise and counterclockwise rotation of the stirrer. 3. The method of claim 2,
If the dewatering vibration value of the drum measured during the first dewatering step is greater than the dewatering reference value, the first dewatering step is terminated and then the first accelerating step is restarted. method. 3. The method of claim 2,
If the dewatering vibration value of the drum measured during the first dehydration step is greater than the dewatering reference value, the additional water supply step, the foam unwinding step, and the second drain step are sequentially performed after the first dehydration step is completed. A control method of a laundry treatment apparatus, characterized in that the restart. a tub in which water is stored; a drum rotatably provided inside the tub to store clothes; a stirrer rotatably provided inside the drum; a drum rotating shaft provided to be perpendicular to the bottom surface of the tub to rotate the drum; an agitator rotating shaft provided to pass through the drum rotating shaft to rotate the stirrer; and a vibration sensing unit configured to measure the vibration of the tub.
a water supply step of supplying water to the tub;
a water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow in the drum;
a first draining step of discharging the water stored in the tub to the outside of the tub;
a first acceleration step of accelerating the drum and the stirrer to a preset first RPM;
a second acceleration step of accelerating the drum and the stirrer to a second RPM set greater than the first RPM when the vibration of the drum measured during the first acceleration step is less than or equal to a preset first reference value;
a third acceleration step of accelerating the drum and the stirrer to a first dehydration RPM set greater than the second RPM when the vibration of the drum measured during the second acceleration step is less than or equal to a preset second reference value;
a first dehydration step of maintaining the number of revolutions of the drum and the stirrer at the first dehydration RPM when the vibration of the drum measured during the third acceleration step is less than or equal to a preset third reference value; and
If the dewatering vibration value of the drum measured during the first dehydration step is less than or equal to a preset dehydration reference value, the second dehydration RPM set to be greater than the first dehydration RPM by rotating the drum and the stirrer 2 dehydration step; including,
a first acceleration end step of terminating the first acceleration step when the vibration of the drum measured during the first acceleration step is greater than the first reference value; a first additional water supply step of supplying water to the tub; a first unwinding step of alternately performing clockwise rotation and counterclockwise rotation of the stirrer; and a second draining step of discharging the water of the tub to the outside of the tub;
a second acceleration end step of terminating the second acceleration step when the vibration of the drum measured during the second acceleration step is greater than the second reference value; a second additional water supply step of supplying water to the tub; a second unwinding step of alternately performing clockwise rotation and counterclockwise rotation of the stirrer; and a third draining step of discharging the water from the tub to the outside of the tub. 13. The method of claim 12,
and the first accelerating step is resumed when the second draining step is completed or the third draining step is completed. 14. The method of claim 13,
An amount of water supplied to the tub in the first additional water supply step is set to be greater than an amount of water supplied to the tub in the second additional water supply step. 14. The method of claim 13,
The method of claim 1, wherein the operation time of the stirrer set in the first cloth unwinding step is set longer than the operation time of the stirrer set in the second cloth unrolling step. 14. The method of claim 13,
The method of claim 1, wherein the number of revolutions of the stirrer set in the first cloth unwinding step is set to be greater than the number of revolutions of the stirrer set in the second cloth unwinding step. 14. The method of claim 13,
If the vibration of the drum measured during the third acceleration step is greater than the third reference value, the third acceleration step is stopped and then the first acceleration step is restarted. . 14. The method of claim 13,
When the vibration of the drum measured during the third acceleration step is greater than the third reference value, the third acceleration step is stopped and then the first draining step and the first acceleration step are restarted. A method of controlling a laundry treatment device. 18. The method according to any one of claims 12 to 17,
After completion of the first draining step, before the start of the first acceleration step, the laundry weight determination step of measuring the amount of clothes stored in the drum by rotating the drum and the stirrer in the same direction;
and the first reference value, the second reference value, the third reference value, and the dehydration reference value are set based on the amount of clothing measured in the laundry weight determination step.

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