KR20210097458A - 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 determine whether tangled clothing is untangled. The control method of a clothing treatment apparatus comprises: a water supply step of supplying water to a tub; a first water current forming step of forming a water current in a drum provided in the tub by rotating only an agitator provided in the drum without rotating the drum; a first measurement step of measuring the vibration of the drum while the drum and the agitator rotate in the same direction; a cloth untangling step of alternately performing clockwise rotation and counterclockwise rotation of the agitator if a first measurement value measured in the first measurement step is larger than a preset first reference value; a second measurement step which is started after completion of the cloth untangling step, and measures the vibration of the drum while the drum and the agitator rotate in the same direction; and a second water current forming step which is started if a second measurement value measured in the second measurement step is lower than or equal to the first reference value, and forms a water current in the drum by rotating only the agitator without rotating the drum.

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.

Among the conventional clothes treatment apparatuses, there is a fabric unwinding step of untangling clothes during the washing or rinsing step. However, there is a problem in that the conventional laundry treatment apparatuses provided with the cloth unwinding step do not realize the effect of the cloth unwinding step because there is no process of determining how much the tangle of the clothes has been resolved after the cloth unwinding step is completed.

The present application provides a laundry treatment apparatus capable of determining whether or not clothes are untangled by measuring the vibration of the drum after completion of the unrolling step and comparing the measured vibration with a preset reference value, and a control method of the laundry treatment apparatus. make it a task to be solved.

Also, an object of the present application is to provide a laundry treatment apparatus and a method for controlling the laundry treatment apparatus that minimize vibrations generated in the drum during the dehydration step by allowing at least some sections of the dewatering step to overlap the draining step. do it with

The present application provides a water supply step of supplying water to the tub; a first water flow forming step of rotating only the agitator among the drum provided in the tub and the stirrer provided in the drum to form a water flow in the drum; a first measurement step of measuring the vibration of the drum while the drum and the stirrer rotate in the same direction; When the first measurement value measured in the first measurement step is greater than a preset first reference value, a popping step of performing clockwise rotation and counterclockwise rotation of the stirrer; a second measuring step of measuring the vibration of the drum, which is started after completion of the popping step, and while the drum and the stirrer rotate in the same direction; It is started when the second measured value measured in the second measuring step is less than or equal to the first reference value, and a second water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow in the drum; includes; To provide a method for controlling a laundry treatment apparatus.

The control method may further include a dehydration step that is started after completion of the second water flow forming step, and separates water from clothes by rotating the drum and the stirrer in the same direction.

The dehydration step may include: a first acceleration step of accelerating the drum and the stirrer to a preset first rotational speed; a dehydration vibration measuring step of measuring the vibration of the drum while maintaining the rotation speed of the drum and the stirrer at the first rotation speed; a second acceleration step of accelerating the drum and the stirrer to a second rotational speed greater than the first rotational speed when the dewatering vibration value measured in the dewatering vibration measuring step is less than or equal to a preset vibration reference value; and a maintenance step of maintaining the drum and the stirrer at the second rotation speed.

The control method may further include a drainage step that is provided to discharge the water inside the tub to the outside of the tub, and is initiated during the first acceleration step or during the dehydration vibration measurement 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; a water level sensing unit for measuring the water level inside the tub; and a vibration sensing unit for measuring the vibration of the drum, the present application comprising: a water supply step of supplying water to the tub up to a reference water level set differently according to the amount of clothes; a first 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 measurement step of measuring the vibration of the drum while the drum and the stirrer rotate in the same direction; When the first measured value measured in the first measuring step is greater than a preset first reference value, a popping step of alternately performing clockwise rotation of the stirrer and counterclockwise rotation of the stirrer; a second measuring step of measuring the vibration of the drum, which is started after completion of the popping step, and while the drum and the stirrer rotate in the same direction; a second water flow forming step of starting when the second measured value measured in the second measuring step is equal to or less than the first reference value, and rotating only the stirrer among the drum and the stirrer to form a water flow in the drum; and a dehydration step that starts after completion of the second water flow forming step and separates water from clothes by rotating the drum and the stirrer in the same direction.

The first measuring step and the second measuring step may include: accelerating the drum and the stirrer to a resonance-inducing RPM; decelerating the drum and the stirrer to 0 RPM when the rotational speed of the drum and the stirrer reaches the resonance-inducing RPM; and measuring the degree of unbalance generated in the drum during the steps of accelerating to the resonance-inducing RPM and decelerating to 0 RPM.

The decelerating to 0 RPM may be started when the rotation speed of the drum and the stirrer reaches the resonance-inducing RPM without the process of maintaining the rotational speed of the drum and the stirrer at the resonance-inducing RPM.

The dehydration step may include: a first acceleration step of accelerating the drum and the stirrer to a preset first rotational speed; a dehydration vibration measuring step of measuring the vibration of the drum while maintaining the rotation speed of the drum and the stirrer at the first rotation speed; a second acceleration step of accelerating the drum and the stirrer to a second rotational speed greater than the first rotational speed when the dewatering vibration value measured in the dewatering vibration measuring step is less than or equal to a preset vibration reference value; and a maintaining step of maintaining the drum and the stirrer at the second rotation speed.

The control method may further include a drainage step that is provided to discharge the water inside the tub to the outside of the tub, and is initiated during the first acceleration step or during the dehydration vibration measurement step.

The control method includes the steps of, when the dehydration vibration value is greater than the vibration reference value, stopping the rotation of the drum and the stirrer; Populgi water supply step of supplying water to the tub; and a stirring step of alternately performing clockwise rotation of the stirrer and counterclockwise rotation of the stirrer; may be provided to proceed sequentially.

The water supplied to the tub through the popping water supply step may be provided to be discharged to the outside of the tub during the dehydration vibration measurement step, which is resumed after the stirring step is completed.

The control method may include a third measuring step of measuring vibration of the drum while the drum and the stirrer rotate in the same direction, which is performed before the start of the first measuring step; an additional water supply step of supplying a preset amount of water to the tub when the third measured value measured in the third measuring step is greater than a preset second reference value; and a third water flow forming step of rotating only the agitator among the drum and the stirrer to form a water flow in the drum during the progress of the additional water supply step or after the completion of the additional water supply step.

The second reference value may be set to a value smaller than the first reference value.

The control method may include a water level sensing step of measuring the amount of water stored in the tub, which is performed after the start of the third water flow forming step and before the start of the first measuring step; and when the water level measured in the water level sensing step is higher than the preset reference water level, draining the water inside the tub so that the water level inside the tub is below the reference water level; further comprising, the first measuring step includes: It may be started when the water level inside the tub is below the reference water level.

The control method may include a third measuring step of measuring vibration of the drum while the drum and the stirrer rotate in the same direction, which is performed before the start of the first measuring step; and an additional water supply step of supplying a preset amount of water to the tub when the third measured value measured in the third measuring step is greater than a preset second reference value; further comprising, wherein the second water flow forming step includes: It may be started while the additional water supply step is in progress or after completion of the additional water supply step.

In the control method, when the third measured value measured in the third measuring step is less than or equal to a preset second reference value, a third water flow forming step of rotating only the agitator among the drum and the stirrer to form a water flow in the drum ; and, the first measuring step may be started after a preset reference time has elapsed from when the third water flow forming step is started. The second reference value may be set to a value smaller than the first reference value.

The present application provides a laundry treatment apparatus capable of determining whether or not clothes are untangled by measuring the vibration of the drum after completion of the unrolling step and comparing the measured vibration with a preset reference value, and a control method of the laundry treatment apparatus. It works.

In addition, the present application has an effect of providing a laundry treatment apparatus and a control method of the laundry treatment apparatus that minimize vibrations generated in the drum during the dewatering step by allowing at least some sections of the dewatering step to overlap the draining step.

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.
7 is a view showing another embodiment of a method for controlling the 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 controlling the valve 25 of the water supply part to supply water to the tub body 21 up to a preset reference circumference (S10), the drum 3 and the agitator 4 and a first water flow forming step (S20) of rotating only the stirrer to form a water flow in the drum 3 .

The reference water level may be set differently according to the amount of clothes put into the drum 3 . In order to determine the amount of clothes put into the drum 3 , the control method may further include a laundry weight determination step performed before the water supply step ( S10 ). The weight determination step includes the amount of current supplied to the stator 52 to rotate the drum 3 by a preset rotation angle, or the stator ( 52) may be provided as a process of determining the amount of clothing by measuring the amount of current supplied to the device.

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

During the progress of the first water flow forming step (S20), the control method determines whether the running time of the first water flow forming step has reached a preset reference time (a first reference time) (S25).

When the running time of the first water flow forming step (S20) reaches the first reference time, the control method proceeds to a measuring step (S30, first measuring step) of measuring the vibration of the drum 3 . The first measuring step (S30) is a step of accelerating the drum 3 and the stirrer 4 to the resonance-inducing RPM. When the resonance-inducing RPM is reached, the number of rotations of the drum 3 and the stirrer 4 is measured. It may be provided to include the steps of decelerating to 0 RPM, and measuring the degree of unbalance generated in the drum during the steps of accelerating to the resonance-inducing RPM and decelerating to 0 RPM.

In order to rotate the drum 3 and the stirrer 4 in the same direction, the clutch 58 maintains the state in which the first rotation shaft 54 and the rotor 53 are connected at the first point P1. to the second point P2. The resonance-inducing RPM is the number of revolutions at which resonance is induced in the laundry treatment apparatus 100 , and the size thereof varies depending on the structure and weight of the laundry treatment apparatus.

In the step of decelerating the drum 3 and the stirrer 4 to 0 RPM, the rotation speed of the drum and the stirrer reaches the resonance inducing RPM without the process of maintaining the rotation speed of the drum and the stirrer at the resonance-inducing RPM. It may be provided to be initiated at one time.

When the value (first measured value) measured in the measuring step ( S30 ) is equal to or less than the preset first reference value ( S31 ), the control method proceeds to the second water flow forming step ( S40 ). The second water flow forming step (S40) is a process of forming a water flow inside the drum by rotating only the stirrer 4 among the drum 3 and the stirrer 4 .

In order to proceed with the second water flow forming step (S40), the clutch 58 should be located at a first point P1 at which the first rotation shaft 54 and the rotor 53 are maintained in a separated state. , a control unit (not shown) may control the driving unit 5 so that the stirrer 4 repeats clockwise rotation and counterclockwise rotation.

On the other hand, if the first measured value measured in the measuring step (S30) is greater than the first reference value (S31), the control method alternates the clockwise rotation of the stirrer 4 and the counterclockwise rotation of the stirrer The first unwinding step (S35) of mitigating the tangles of the clothes is performed.

However, since unrestricted repetition of the first unrolling step (S35) may cause a problem of increasing the operating time of the laundry treatment apparatus, the first unwinding step (S35) is performed in the first water flow forming step (S20). ) may be provided to proceed only when the number of executions of the first unwinding step executed during the process is less than or equal to a preset reference number (S33).

After completion of the first unwinding step (S35), the control method is a second method in which the vibration sensing unit 6 measures the vibration of the drum while the drum 3 and the stirrer 4 rotate in the same direction. A measurement step (S37) is performed. The second measuring step (S37) may be provided to measure the vibration of the drum 3 in the same manner as the above-described first measuring step (S30).

The second measuring step (S37) is a step of determining whether the tangle of the clothes has been resolved through the first unwinding step (S35). When the second measuring step S37 is executed, the second water flow forming step S40 is started only when the second measured value measured in the second measuring step S37 is equal to or less than the first reference value.

That is, if the second measured value measured in the second measuring step (S37) is equal to or less than the first reference value, the control method proceeds to the second water flow forming step (S40). However, when the second measurement value is greater than the first reference value, the control method sequentially performs the first unwinding step (S35) and the second measurement step (S37). Since the control method includes steps (S37 and S31) of determining whether or not the tangles of the clothes have been resolved through the first unwinding step (S35), the drum during the second water flow forming step (S40) is in progress. It is possible to minimize the occurrence of vibration.

The second water flow forming step (S40) is performed for a preset time. When the second water flow forming step (S40) is finished, the control method is a drain step (50) of discharging the water stored in the tub (2) to the outside of the cabinet (1) through the pump (27) of the drain unit (50); And the drum 3 and the stirrer 4 are rotated in the same direction to remove water from the clothes (S60).

The dehydration step (S60) is a first acceleration step (S61) of accelerating the drum (3) and the stirrer (4) to a preset first RPM (S61), and the number of rotations of the drum (3) and the stirrer (4) is set to the first RPM A spin-drying vibration measurement step (S63) of measuring the vibration of the drum while maintaining at If the value is less than or equal to the vibration reference value, a second acceleration step (S67) of accelerating the drum 3 and the stirrer 4 to a second RPM greater than the first RPM, and the drum 3 and the stirrer 4 It may be provided to include a maintaining step (S69) of maintaining the rotation speed at the second RPM.

In this case, the draining step (S50) may be provided to be started while the first acceleration step (S61) is in progress or the dehydration vibration measuring step (S63) is in progress. When the water inside the tub 2 is drained while the drum 3 rotates inside the tub 2 in which water is stored, the clothes can be evenly distributed in the drum 3, and through this, the dehydration step (S60) ), it is possible to minimize the vibration that occurs in the drum during the process.

On the other hand, if the dewatering vibration value measured in the dewatering vibration measuring step (S63) is greater than the preset vibration reference value (S65), the dewatering step (S60) proceeds to the second unrolling step (S70). The second unwinding step (S70) may include stopping the rotation of the drum and the stirrer (S71), and supplying and stirring water to untangle the clothes (S73). The water supply and agitation step (S73) includes a poplar water supply step of supplying water to the tub 2 by controlling the valve 25 of the water supply unit, and a clockwise rotation of the stirrer by controlling the driving unit 5 and It may be provided to include a stirring step of alternating counterclockwise rotation.

After completion of the water supply and stirring step (S73), the second foam unwinding step (S70) proceeds with a dewatering and draining step (S75) of discharging the water supplied in the foaming water supply step to the outside of the tub. After completion of the dehydration and drainage step (S75), the control method resumes the dehydration step (S60), wherein the dehydration and drainage step (S75) is the first accelerated step (S61) of the resumed dehydration step or the restarted dehydration step. It may be provided to be started during the progress of the dehydration vibration measuring step (S63). The above-described dehydration step (S60) may be set to end (S80) when a preset dehydration time elapses.

6 is a view showing another embodiment of a control method of the laundry treatment apparatus, wherein the control method according to this embodiment includes a third measuring step (S22) and a third measuring step (S22) performed before the first measuring step (S320) is started. It is characterized in that it further comprises an additional water supply step (S231) of additionally supplying water to the tub (2) according to the magnitude of the vibration measured in the measuring step.

That is, in the control method of FIG. 6 , the first water flow forming step ( S20 ) is performed after the water supply step ( S10 ) is completed. When a preset reference time (second reference time) has elapsed after the start of the first water flow forming step (S20), the control method according to the present embodiment is a third method in which the vibration sensing unit 6 measures the vibration of the drum. A measurement step (S22) is performed. Since the third measuring step (S22) may be provided to measure the vibration of the drum 3 in the same manner as the above-described first measuring step (S30), a detailed description thereof will be omitted.

If the measured value measured in the third measuring step (S22) is less than or equal to a preset reference value (second reference value), the control method of FIG. 6 rotates only the stirrer 4 to form a water flow inside the drum 3 Proceed to the water flow forming step (S24). The third water flow forming step (S24) may be provided to be started while the additional water supply step (S231) is in progress, or may be provided to be started after the completion of the additional water supply step (S231).

On the other hand, if the measured value measured in the third measuring step (S22) is greater than the second reference value, the control method of FIG. 6 controls the valve 25 of the water supply part to supply water to the tub 2 . An additional water supply step (S231) is performed.

When water is added to the tub 2 , the space in which the clothes inside the drum 3 can be dispersed is expanded, thereby reducing the possibility of the clothes getting tangled. This has the effect of minimizing the vibration generated in the drum 3 in the water flow forming steps ( S30 and S40 ) performed after the additional water supply step ( S231 ). In order to maximize this effect, the second reference value is preferably set to a value smaller than a first reference value to be described later.

The amount of water supplied to the tub through the additional water supply step (S231) may be set differently depending on the amount of clothes put into the drum, or may be set the same regardless of the amount of clothes.

During the third water flow forming step (S24), the control method of FIG. 6 proceeds with a water level detecting step (S27) of detecting the water level inside the tub through the water level detecting unit (29). The water level detecting step (S27) should be provided before the start of the first measuring step (S30), and FIG. 6 shows that the water level detecting step (S27) is performed after the first water flow forming step (S20) is started. A case in which it is provided to proceed when one reference time has elapsed is illustrated as an example.

When the first reference time elapses after the first water flow forming step (S20) is started, the control method of FIG. 6 ends the third water flow forming step (S24) and then proceeds to the water level detecting step (S27). can be provided. This is to more accurately determine the water level inside the tub (2).

If the water level measured in the water level detecting step (S27) is below the reference water level (S29), the control method of FIG. 6 is the vibration detecting unit 6 while rotating the drum 3 and the stirrer 4 in the same direction. ) proceeds to the first measurement step (S30) of measuring the vibration of the drum (3).

However, if the water level measured in the water level detection step (S27) is higher than the reference water level, the control method of FIG. 6 controls the water inside the tub 2 so that the water level inside the tub 2 is below the reference water level. A draining step (S271) is performed. The data measured by the vibration sensing unit 6 when the water level inside the tub 2 is the reference water level is data measured by the vibration sensing unit 6 when the water level inside the tub is higher than the reference water level. Since it may be different, the step of draining the water inside the tub (S271) has the effect of increasing the accuracy of the data measured in the first measuring step (S30).

Comparing the measurement value progressed after completion of the first measuring step (S30) with a first reference value (S31), comparing the execution number of the number of unwinding with the reference number (S33), the first unwinding step (S35), the second measuring step (S37), the second water flow forming step (S40), the draining step (S50), the dewatering step (S60), and the second unwinding step (S70) are the same as in the embodiment of FIG. A detailed description of the bar will be omitted.

7 is a view showing another embodiment of a method for controlling the laundry treatment apparatus. Compared with the embodiment of FIG. 6 , in the control method according to this embodiment, when the additional water supply step ( S231 ) is performed, the third water flow forming step ( S24 ) is not performed, and the second water flow forming step ( S40 ) is performed that it does

The control method of FIG. 7 is similar to the control method of FIG. 6 , the water supply step (S10), the first water flow formation step (S20), and the third measurement step (S21, S22) performed when the second reference time elapses, the above An additional water supply step (S23, S231) that is performed when the third measured value measured in the third measuring step (S22) is greater than the second reference value, and a third that is performed when the third measured value is less than or equal to the second reference value It is provided to include the water flow forming step (S23, S24).

In the control method of FIG. 7 , the second water flow forming step ( S40 ) is performed during the additional water supply step ( S231 ) or immediately after the additional water supply step ( S231 ) is completed. Processes after the third water flow forming step S24 are the same as the control method of FIG. 5 , and the processes after the second water flow forming step S40 are the same as the control method of FIG. 6 , so a detailed description will be omitted.

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 (11)

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; a water level sensing unit for measuring the water level inside the tub; and a vibration sensing unit configured to measure the vibration of the drum.
a water supply step of supplying water to the tub up to a reference water level set differently according to the amount of clothing;
a first 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 measurement step of measuring the vibration of the drum while the drum and the stirrer rotate in the same direction;
If the first measurement value measured in the first measurement step is greater than a preset first reference value, a popping step of alternately performing clockwise rotation of the stirrer and counterclockwise rotation of the stirrer;
a second measuring step of measuring the vibration of the drum, which is started after completion of the popping step, and while the drum and the stirrer rotate in the same direction;
a second water flow forming step of starting when the second measured value measured in the second measuring step is equal to or less than the first reference value, and rotating only the stirrer among the drum and the stirrer to form a water flow in the drum; and
It is started after the completion of the second water flow forming step, and a dehydration step of separating the water from the clothes by rotating the drum and the stirrer in the same direction;
The first measuring step and the second measuring step are
accelerating the drum and the stirrer to a resonance-inducing RPM;
decelerating the drum and the stirrer to 0 RPM when the rotational speed of the drum and the stirrer reaches the resonance-inducing RPM; and
and measuring the degree of unbalance generated in the drum during the steps of accelerating to the resonance-induced RPM and decelerating to 0 RPM. According to claim 1,
The step of decelerating to 0 RPM is started when the rotation speed of the drum and the stirrer reaches the resonance-inducing RPM without the process of maintaining the rotation speed of the drum and the stirrer at the resonance-inducing RPM. How to control the device. According to claim 1,
The dehydration step
a first acceleration step of accelerating the drum and the stirrer to a preset first rotational speed;
a dehydration vibration measuring step of measuring the vibration of the drum while maintaining the rotation speed of the drum and the stirrer at the first rotation speed;
a second acceleration step of accelerating the drum and the stirrer to a second rotational speed greater than the first rotational speed when the dewatering vibration value measured in the dewatering vibration measuring step is less than or equal to a preset vibration reference value; and
and a maintaining step of maintaining the drum and the stirrer at the second rotation speed. 4. The method of claim 3,
and a drainage step that is provided to discharge the water inside the tub to the outside of the tub, and is initiated during the first acceleration step or during the dehydration vibration measurement step. control method. 4. The method of claim 3,
stopping rotation of the drum and the stirrer when the dewatering vibration value is greater than the vibration reference value;
Populgi water supply step of supplying water to the tub; and
A method of controlling a laundry treatment apparatus, characterized in that sequentially performing a stirring step of alternately performing clockwise rotation of the stirrer and counterclockwise rotation of the stirrer. 6. The method of claim 5,
The method of claim 1, wherein the water supplied to the tub through the popping water supply step is discharged to the outside of the tub during the dehydration vibration measuring step, which is resumed after the stirring step is completed. 7. The method according to any one of claims 1 to 6,
a third measurement step of measuring the vibration of the drum while the drum and the stirrer rotate in the same direction, which is performed before the start of the first measurement step;
an additional water supply step of supplying a preset amount of water to the tub when the third measured value measured in the third measuring step is greater than a preset second reference value; and
A third water flow forming step of rotating only the agitator among the drum and the stirrer to form a water flow in the drum during the progress of the additional water supply step or after the completion of the additional water supply step; A method of controlling a processing device. 8. The method of claim 7,
and the second reference value is set to a value smaller than the first reference value. 8. The method of claim 7,
a water level sensing step of measuring the amount of water stored in the tub after the start of the third water flow forming step and before the start of the first measuring step; and
When the water level measured in the water level sensing step is higher than the preset reference water level, draining the water inside the tub so that the water level inside the tub is below the reference water level; further comprising,
The first measuring step is started when the water level inside the tub is below the reference water level. 7. The method according to any one of claims 1 to 6,
a third measurement step of measuring the vibration of the drum while the drum and the stirrer rotate in the same direction, which is performed before the start of the first measurement step; and
When the third measured value measured in the third measuring step is greater than a preset second reference value, an additional water supply step of supplying a preset amount of water to the tub; further comprising,
The method of claim 1, wherein the second water flow forming step is started during the additional water supply step or after the additional water supply step is completed. 11. The method of claim 10,
When the third measurement value measured in the third measurement step is less than or equal to a preset second reference value, a third water flow forming step of rotating only the stirrer among the drum and the stirrer to form a water flow inside the drum; further comprising do,
The method of claim 1, wherein the first measuring step is started after a preset reference time has elapsed from when the third water flow forming step is started.

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