KR102491974B1 - washing machine and controlling method of washing machine - Google Patents

Abstract

The present invention relates to a washing machine and a control method of the washing machine, comprising: a tub for storing wash water; a drum rotatably provided inside the tub and storing laundry; a drive motor provided in the tub and rotating the drum; and A vibration measuring device provided in the tub to detect the vibration of the tub, a water level sensor to detect the water level stored in the tub and the vibration detected by the vibration measuring device, and excessive bubbles inside the tub according to the water level detected by the water level sensor. and a control unit for determining the occurrence or occurrence of a water drop phenomenon.

Description

Washing machine and control method of washing machine {washing machine and controlling method of washing machine}

The present invention relates to a washing machine and a method for controlling the washing machine, and more particularly, in detecting unbalance of laundry when the washing machine enters the spin cycle, the washing machine and control of the washing machine for entering the spin cycle according to the cause of the imbalance. It's about how.

In general, a washing machine is a machine that, when a user puts contaminated laundry into a washing tub, performs a washing process by properly mixing detergent and wash water, and then completes a washing operation through a rinsing and spin-drying process.

Also, the drum washing machine has a structure in which a washing operation is performed while a drum loaded with laundry is horizontally rotated. Looking at the operation process of the drum washing machine, when a user puts laundry into the drum and turns on a start switch, the control unit detects the weight of the laundry put into the drum, determines an appropriate amount of water for the weight of the laundry, and starts supplying water.

When water is supplied and stored up to a water level set in the water storage tank surrounding the drum, the drum rotates according to the driving of the motor, and washing is performed by dropping the laundry. This washing is performed for a time set by the weight of the laundry.

Thereafter, when the washing cycle is completed, a drainage operation of discharging the contaminated wash water from the reservoir to the outside by a drain pump and a spin-drying cycle are performed simultaneously, followed by supplying water again as many times as the set number of times, and then repeating the washing cycle for a predetermined number of times. In addition, when the washing operation is completed, a rinsing operation and a spin-drying operation are subsequently performed.

However, when the laundry in the drum is tilted to one side during the high-speed rotation for the spin-drying cycle, the rotation center axis of the drum is off-centre and biased, resulting in vibration. Due to these vibrations, the drum washing machine according to the prior art not only shortens the life of the machine and causes noise, but also causes a problem in that a sufficient dehydration effect cannot be obtained.

In order to solve this problem, Korean Patent Publication No. 10-2008-0086308 discloses noise and dehydration time by controlling unbalance through the sum and difference of signals detected from a plurality of speed sensors attached to the side of a tub of a washing machine. A drum washing machine capable of reducing is disclosed.

However, in the conventional drum washing machine, although the magnitude of vibration can be known using the magnitude of unbalance using a plurality of overspeed sensors, there is a problem in that the exact position of unbalance cannot be known due to a structure using a simple sum and difference. .

In particular, in a section where the laundry is spread diagonally, the vibration may be small in the low RPM section and the normal section, but the vibration may be large in the resonance section. However, in the prior art, there is a problem in that the increase in vibration in the resonance section cannot be detected.

In addition, the cause of unbalance may be caused by causes other than the eccentricity of the weight of the laundry, such as excessive generation of bubbles (hereinafter referred to as 'excessive bubbles') and washing water remaining in the tub during spin-drying (hereinafter referred to as 'water clogging phenomenon'). In this case, there is a problem in that washing time and spin-drying time are increased by repeatedly performing an unnecessary unbalance resolution operation because appropriate follow-up measures are not performed.

The present invention was made to solve the above problems, and the present invention uses the phase and magnitude of a signal input through a vibration measuring device capable of detecting the vibration of the outer surface of the tub to determine the location and size of the unbalance. It is an object of the present invention to provide a drum washing machine and a control method thereof capable of improving dehydration performance and efficiency by determining.

In addition, the present invention has been devised to solve the above problems, and the present invention detects the detection result of a vibration measuring device capable of detecting vibration of the outer surface of the tub and the washing water level in the tub to detect excess water in the tub. An object of the present invention is to provide a drum washing machine and a control method thereof capable of improving dehydration performance and efficiency by determining the generation of bubbles and water clogging.

In order to achieve the above object, a washing machine according to an embodiment of the present invention includes a cabinet forming an external shape, a tub in which wash water is stored, a drum provided to rotate inside the tub and storing laundry, and provided in the tub A drive motor for rotating the drum, a water supply unit for supplying wash water to the tub, a drainage unit for draining wash water from the tub, a vibration measuring device provided in the tub to detect vibration of the tub, and water stored in the tub. and a water level sensor for detecting the level of washing water and a control unit for controlling each component to perform a washing, rinsing, and spin-drying cycle. Within this setting range, if the water level sensed by the water level sensor is below the set water level, the wash water is additionally supplied through the water supply unit, and if the water level detected by the water level sensor is above the set water level, the wash water is supplied through the drain unit. It is desirable to drain the

Preferably, the control unit maintains a constant rotational speed of the driving motor during the water supplying time of the water supplying unit when the water level detected by the water level sensor is equal to or less than a set water level.

In addition, the control unit may decelerate the rotational speed of the drive motor for a drainage time of the drainage unit and maintain the rotational speed of the driving motor for a predetermined time when the water level sensed by the water level sensor is equal to or higher than a set water level.

Preferably, the control unit detects that excessive bubbles are generated in the tub when the water level detected by the water level sensor is equal to or less than a set water level.

Preferably, the control unit detects that a water level phenomenon has occurred inside the tub when the water level detected by the water level sensor is equal to or higher than a set water level.

Meanwhile, a washing machine according to another embodiment of the present invention for achieving the above object includes a cabinet, a tub for storing wash water, a drum rotatably provided inside the tub and storing laundry, and provided in the tub. a driving motor for rotating the drum; a vibration measuring device provided in the tub to sense vibration of the tub; a water level sensor to sense the level of wash water stored in the tub; and vibration sensed by the vibration measuring device. And, it is preferable to have a control unit for determining the generation of excessive bubbles or the occurrence of water overflow in the tub according to the water level sensed by the water level sensor.

In addition, the vibration measuring device is preferably one selected from an inertial sensor, a multi-axis inertial sensor, an acceleration sensor, an optical sensor, an angular velocity sensor, a gyro sensor, and the like.

In addition, the vibration measuring device is preferably provided at the rear of the upper part of the tub.

The tub may further include a water supply unit disposed above the tub to supply wash water to the tub, and the control unit may supply wash water through the water supply unit when the excessive foam is generated.

Preferably, a drainage unit is provided at a lower portion of the tub and drains the wash water stored in the tub, and the control unit drains the wash water in the tub through the drainage unit when the water flooding phenomenon occurs. Do.

In addition, the controller preferably determines that excessive bubbles occur when the water level sensed by the water level sensor is less than or equal to a set water level, and determines that a water drop phenomenon occurs when the water level detected by the water level sensor is greater than or equal to a set water level.

Meanwhile, a method for controlling a washing machine according to another embodiment of the present invention for achieving the above object includes driving a driving motor for rotating a drum accommodating laundry, and a vibration amount of a tub accommodating the drum. A step of measuring the volume through a vibration measuring device, calculating the size of unbalance according to the measurement result of the vibration measuring device, and measuring the water level of washing water inside the tub through a water level sensor, wherein the calculation It is preferable to include the step of determining the generation of excessive bubbles or the occurrence of a water drop phenomenon according to the measured water level value when the measured unbalance size is less than or equal to the set value.

Preferably, the calculating of the unbalance may include, when the calculated unbalance is equal to or greater than a set value, decelerating the speed of the driving motor and performing laundry unwinding again.

In addition, in the step of determining the generation of excessive bubbles or the occurrence of a water drop phenomenon according to the measured water level value, it is preferable to determine that excessive bubbles have occurred when the measured water level is less than or equal to a set value.

The method may further include additionally supplying wash water to the tub for a predetermined period of time when it is determined that the excessive foam is generated.

In addition, it is preferable that the number of revolutions of the drum is kept constant while the additional water supplying step is in progress.

The method may further include a draining step of draining the wash water in the tub when the additional supply of the wash water is completed.

In addition, in the step of determining the generation of excessive bubbles or the water dipping phenomenon according to the measured water level value, it is preferable to determine that the water dipping phenomenon has occurred when the measured water level is greater than or equal to a set value.

In addition, it is preferable to further include additionally draining the wash water of the tub for a predetermined period of time when it is determined that the water flooding phenomenon has occurred.

Also, while the additional draining step is in progress, it is preferable that the rotational speed of the drum is reduced for a certain period of time.

According to the washing machine according to the present invention, the position and size of the unbalance can be accurately determined through the amplitude of the signal input through the vibration measuring device provided in the tub.

In addition, according to the washing machine according to the present invention, it is possible to determine the occurrence of excessive foam and water leakage in the tub by detecting the detection result of the vibration measuring device provided in the tub and the washing water level in the tub.

Therefore, if the size and location of unbalance, excessive foaming, and water splashing exceed the set standards before entering the dehydration operation, the occurrence of vibration is prevented by eliminating the unbalance by taking measures corresponding to the unbalanced, excessive foaming, water splashing, etc. and the drum can maintain a stable state even during dewatering operation in which the drum rotates at high speed, thereby saving dehydration time.

1 is a perspective view showing a washing machine according to the present invention.
Figure 2 is a simplified view showing the internal structure of the washing machine according to the present invention.
3 is a configuration diagram showing the configuration of a washing machine according to the present invention.
4 is a flowchart illustrating a control method of a washing machine according to the present invention.
5 is a graph showing a change in motor revolutions for resolving unbalance in the method of controlling a washing machine according to the present invention.
6 is a graph showing a change in motor rotation speed for eliminating excessive foam in the method for controlling a washing machine according to the present invention.
7 is a graph showing a change in motor revolutions for resolving a water drop phenomenon in the control method of a washing machine according to the present invention.

Hereinafter, a washing machine and a control method of the washing machine according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the names of each defined element are defined in consideration of functions in the present invention. Therefore, it should not be understood as limiting the technical components of the present invention. In addition, each of the names defined for each component may be called a different name in the art.

First, a washing machine according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a washing machine according to the present invention, Figure 2 is a simplified view showing the internal structure of the washing machine according to the present invention, Figure 3 is a configuration diagram showing the configuration of the washing machine according to the present invention.

As shown in FIGS. 1 to 3, the washing machine 100 according to the present invention has a cabinet 110 including a base 111 and a base 111 provided inside the cabinet 110 to store wash water. The tub 120, the drum 150 rotatably provided inside the tub 120 in the axial direction, and applying rotational force to the drum 150 to wash, rinse, and spin-dry the laundry put into the drum 150 A drive motor 160, a device control unit 170 for controlling each component to operate the washing machine 100, and a control unit 117 for controlling each component in association with the device controller 170 and the washing machine 100 It includes a display unit 116 for displaying the operating state of the.

The cabinet 110 forms the exterior of the washing machine 100 according to this embodiment, and various components to be described later are mounted on the inside and outside. At the front side of the cabinet 110, a door 115 for putting in laundry is rotatably provided.

The cabinet 110 has a base 111 forming the lower part of the washing machine 100 and an opening 114 forming the front surface of the washing machine 100, opened and closed by a door 115, and into which laundry is put. It includes a front panel 113, a top panel 119 forming an upper surface of the washing machine 100, and side panels 118 forming both side and rear surfaces of the washing machine 100.

In addition, a water supply hose 131 and a water supply valve 132 installed on the water supply hose 131 to control the entry and exit of water are provided on the inner upper part of the cabinet 110 so as to supply water from an external water source to the inside of the tub 120. ), and a detergent supply device 133 for supplying wash water supplied through the water supply hose 131 together with detergent into the tub 120. The water supply unit 130 is provided.

In addition, a drain unit 140 composed of a drain hose 142 and a drain pump 142 is provided at the inner lower portion of the cabinet 110 to discharge wash water used for washing and rinsing to the outside.

The tub 120 is provided inside the cabinet 110 to accommodate wash water, and an inlet 121 for inserting laundry is formed on the front surface of the tub 120 . A gasket is provided between the inlet 121 of the tub 120 and the opening 114 of the front panel 113 to prevent leakage of wash water.

In addition, a drive motor 160 for rotating the drum 150 is mounted on the rear surface of the tub 120 . The rotation speed of the driving motor 160 is controlled according to the control of the device controller 170 .

The structure and type of the driving motor 160 are widely known to those skilled in the art and various embodiments are possible, so detailed descriptions thereof will be omitted.

Meanwhile, the tub 120 is elastically supported by an upper spring 124 and a lower damper 125 . Accordingly, when the vibration generated when the drum 150 rotates by the driving motor 160 is transferred to the cabinet 110 through the tub 120, the spring 124 and the damper 125 buffer and dampen the drum ( Transmission of vibration caused by rotation of the cabinet 150 to the cabinet 110 is reduced.

Here, a vibration measuring device 123 for detecting a vibration state of the tub 120 is provided at the rear of the upper part of the tub 120, and the vibration measuring device 123 measures the inside of the drum 150 when the drum 150 rotates. By sensing the vibration generated by the eccentricity of the laundry, the position of the eccentricity and the size of the vibration can be sensed and determined.

The vibration measuring device 123 may be selected and used from an inertial sensor, an acceleration sensor, an optical sensor, a multi-axis inertial sensor, an angular velocity sensor, a gyro sensor, and the like.

In addition, a water level sensor 143 for detecting the amount of wash water injected into the tub 120 is provided adjacent to the drainage part 140 at a lower portion of the tub 120 .

Here, the water level sensor 143 not only detects the amount of wash water put into the tub 120, but also detects the amount of wash water remaining in the tub 120 during spin-drying, so that excessive foam is generated in the tub 120. It can be judged whether or not water flooding has occurred.

The drum 150 is rotatably provided on the inside of the tub 120, and laundry inputted into the door 115 is put and stacked on the inside of the drum 150. A plurality of drain holes 152 through which wash water passes are formed in the drum 150, and when the drum 150 is rotated, the laundry loaded in the drum 150 is lifted and then dropped. A plurality of lifts 153 are formed, and washing performance can be improved according to the flow of laundry by the lifts 153. And, the rotation shaft 151 connected to the drive motor 160 is connected to the rear of the drum 150 .

On the other hand, in the case of the washing machine 100 as described above, the drum 150 is rotated for washing, rinsing, and spin-drying of laundry, so that the wash water stored in the tub 120 and the inside of the drum 150 It removes various contaminants attached to the laundry by using friction and impact with the loaded laundry.

Meanwhile, the device controller 170 may calculate the magnitude and phase of the vibration measured by the vibration measuring device 123 by calculating a signal input from the vibration measuring device 123 . Here, the magnitude of unbalance can be calculated through the magnitude (ie, amplitude) of the vibration measured by the vibration measuring device 123, and the position of unbalance can be calculated through the difference in phase.

In addition, it is possible to determine whether or not to enter into operation of the dehydration process/foam dispersion/foam removal/water drain removal through the unbalance size and location information calculated by the device control unit 170.

In particular, the position of unbalance can be identified even at low RPM at the beginning or just before entering dehydration operation, and through the position information of unbalance, it is possible to predict the occurrence of large vibrations in the resonance band, thereby stopping dehydration operation or high-speed rotation. be able to

Accordingly, the operation of the washing machine according to an embodiment of the present invention will be described in detail through examples. Each element mentioned below should be understood with reference to the above description and drawings.

4 is a flow chart showing a control method of a washing machine according to the present invention, and FIGS. 5 to 7 are graphs showing changes in motor revolutions according to the control method of a washing machine according to the present invention.

First, in the case of the present invention, when the washing machine 100 enters the spin-drying stroke, unbalance detection, foam removal, and water trap removal are related, and the washing, rinsing, spin-drying, and drying steps of the washing machine 100 are briefly described, and dehydration The detection of unbalance during stroke, the detection of excessive bubbles, the detection of water overflow, the elimination of unbalance, the removal of excessive bubbles, and the removal of water bubbles will be described in detail.

First, when the washing operation is performed by a user's manipulation, the amount of water suitable for the laundry and the washing time are determined by determining the weight of the laundry stored in the drum 150, that is, the load.

In addition, a set amount of wash water is supplied to the inside of the tub 120 through the water supply unit 130 to wet the laundry inside the drum 150 . At this time, detergent and fabric softener may be supplied together into the tub 120 through the detergent supply device 133 connected to the water supply unit 130 .

Thereafter, after the set amount of wash water is supplied, the drive motor 160 rotates the drum 150 forward and backward, and at this time, the lift 153 inside the drum 150 lifts the laundry inside the drum 150. The laundry is washed by repeating the process of raising and then dropping the laundry.

After the washing cycle is completed, the contaminated wash water inside the tub 120 is drained through the drainage unit 140, and when the wash water is drained, new wash water is supplied to proceed with the rinsing cycle.

Meanwhile, after the haenggung cycle is completed, the contaminated washing water inside the tub 120 is drained through the drainage unit 140, and the washing and rinsing cycles proceed with tangle-free laundry.

Thereafter, after the rinsing cycle is completed, the dehydration cycle is performed while detecting an imbalance of the laundry stored in the drum 150, detection of excessive bubbles, and detection of water clogging.

Hereinafter, a control method of a washing machine according to an embodiment of the present invention will be described with reference to FIG. 4 attached thereto.

As shown in FIG. 4, the device control unit 170 drives the driving motor 160 at a low rpm before entering the dehydration cycle or at the beginning of the dehydration cycle, and the load applied to the drive motor 160 before entering the full-scale dehydration cycle and The unbalance of the drum is detected by measuring the vibration state of the tub 120 through the vibration measuring device 123 (step S110).

Specifically, when the drum 150 is rotated by the driving of the driving motor 160, the vibration generated in the drum 150 is transmitted to the tub 120. At this time, the vibration transmitted to the tub 120 may vary according to the arrangement state of the laundry accommodated in the drum 150, that is, the position or distribution of the laundry load.

Accordingly, the eccentricity size and eccentricity position of the laundry may be determined according to the amount of load applied to the drive motor 160 and the magnitude and direction of vibration transmitted from the vibration measuring device 123 to the tub 120 .

On the other hand, the device control unit 170 compares the calculated phase and amplitude with a set unbalance standard. It may be determined that the size is out of the set standard. (Step S120)

At this time, the apparatus controller 170 may grasp the unbalanced position of the first half and the second half of the tub 120, that is, the angular position between the unbalanced first half and second half of the tub 120 according to the calculated phase angle.

Here, the device control unit 170 increases the number of rotations of the drive motor 160 up to the dehydration speed to proceed with the dehydration cycle in order to proceed with the dehydration cycle when the calculated unbalance is lower than the set standard. (FIG. 5 Reference)

On the other hand, when the calculated size of unbalance deviates from a set standard, the device controller 170 may reduce the number of revolutions of the drive motor 160 to change the position of the laundry in the drum 150 to perform the bag distribution again. Yes. (Step S125)

Thereafter, when the fabric dispersion step (step S125) is completed, the device control unit 170 detects the unbalance of the drum 150 again using the vibration measuring device 123, and if the detected unbalance is within the set value, the drive motor ( 160) may be increased to the dehydration speed during the normal dehydration cycle to proceed with the dehydration cycle. (Step S140, see FIGS. 4 and 5)

Here, in the case of the fabric dispersion step (step S125), it may be repeated several times according to the size of unbalance according to the size of vibration detected by the vibration measuring device 123, and when the amount of unbalance is detected excessively large, the driving motor 160 is stopped to stop the dehydration process, and the user can be notified through the display unit 116.

On the other hand, in the step of determining the size of unbalance (step S120), when the calculated size of unbalance is equal to or less than the set value, the water level of the wash water inside the tub 120 is detected to prevent excessive bubbles or water from entering the tub 120. What happened can be judged.

That is, excessive foam may be generated inside the tub 120 due to the detergent remaining in the laundry during the dehydration cycle. In addition, water drained from the laundry may remain in the tub 120, causing a water overflow phenomenon.

Such excessive bubbles and water clogging increase the load of the drive motor 160 that rotates the drum, and causes a problem in that the drum 150 does not enter the desired spin-drying speed for the spin-drying stroke.

Therefore, when excessive bubbles and water overflow occur inside the tub 120, the bubbles generated in the tub 120 are removed or the wash water remaining in the tub 120 is drained so that the drum 150 enters at a normal spin speed. should be able to

On the other hand, as described above, when excessive bubbles and water overflow occur during the dehydration cycle, the load applied to the drive motor 160 and the water level of the wash water detected by the water level sensor 143 of the tub 120 are used to measure the excessive water level. It can be judged by distinguishing between the generation of bubbles and the occurrence of water swarming.

That is, when the load of the drive motor 160 increases and the rotational speed of the drum 150 does not enter the normal spin-drying speed, the device controller 170 uses the water level of the water level sensor to generate excessive bubbles and water dripping. can be judged separately.

In conclusion, the device control unit 170, when the load of the drive motor 160 increases in a state where the calculated unbalance is less than the set value and the rotational speed of the drum 150 does not enter the normal spin speed, the water level sensor 143 detects By detecting the detected wash water level, the generation of excessive foam and the water drop phenomenon are detected. (Step S130)

Here, when the water level sensed by the water level sensor 143 is equal to or higher than the set value, it may be determined that an excessive amount of washing water remains in the tub 120 as a water overflow phenomenon.

Accordingly, the device controller 170 operates the drain unit 140 to drain the wash water inside the tub 120 . At this time, the device control unit 170 operates the drain pump 142 of the drain unit 140 to drain the washing water inside the tub 120 through the drain hose 142, thereby solving the water overflow phenomenon occurring inside the tub 120. Yes. (Step S134)

At this time, the device control unit 170 controls the drive motor 160 to reduce the rotational speed of the drum 150 by one speed, maintains the speed for a predetermined period of time, and operates the drain pump 142 for a predetermined period of time to wash the tub 120. The water can be drained.

In addition, after the operation of the drain pump 142 has elapsed for a predetermined time, the rotational speed of the driving motor 160 may be accelerated to increase the rotational speed of the drum 150 to the dehydration speed of the normal dehydration cycle. (Step S140, See Figures 4 and 6)

On the other hand, when the water level sensed by the water level sensor 143 is equal to or less than the set value, it may be determined that too much foam has been generated by the detergent included in the wash water inside the tub 120 . Accordingly, the apparatus controller 170 operates the water supply unit 130 of the tub 120 to supply washing water to the inside of the tub 120 and removes bubbles generated therefrom.

At this time, the device control unit 170 opens the water supply valve 132 of the water supply unit 130 to supply washing water to the tub 120 through the water supply hose 131 to remove bubbles generated in the tub 120.

In addition, the device control unit 170 may operate the drain pump 142 after supplying the wash water for a predetermined time to drain the additionally supplied wash water and remaining foam through the drain hose 141 to remove the foam. (Step S132)

Here, the device controller 170 controls the drive motor 160 to maintain the rotational speed of the drum 150 at the same speed, and at the same time opens the water supply valve 132 for a predetermined period of time to supply wash water to the tub 120. After a certain period of time, the rotational speed of the driving motor 160 is accelerated to increase the rotational speed of the drum 150 to the dehydration speed of the normal dehydration stroke (step S140, see FIGS. 4 and 7).

As described above, according to one embodiment of the present invention, the position and magnitude of unbalance can be accurately determined through the amplitude of a signal input through the vibration measuring device 123 provided in the tub 120 .

In addition, according to an embodiment of the present invention, the detection result of the vibration measuring device 123 provided in the tub 120 and the washing water level in the tub 120 are detected to generate excessive foam and water splashing in the tub 120. occurrence can be determined.

Therefore, if the size and location of unbalance, excessive foaming, and water splashing exceed the set standards before entering the dehydration operation, the occurrence of vibration is prevented by eliminating the unbalance by taking measures corresponding to the unbalanced, excessive foaming, water splashing, etc. and the drum can maintain a stable state even during dewatering operation in which the drum rotates at high speed, thereby saving dehydration time.

Although the preferred embodiments of the present invention have been described in detail as described above, those skilled in the art to which the present invention pertains, without departing from the spirit and scope of the present invention defined in the appended claims. Various modifications of the present invention may be practiced. Accordingly, changes in future embodiments of the present invention will not deviate from the technology of the present invention.

100: washing machine 110: cabinet
120: tub 123: vibration measuring device
130: water supply part 140: drainage part
141: water level sensor 150: drum
160: drive motor

Claims (20)

A cabinet forming an external shape, a tub for storing wash water, a drum provided to rotate inside the tub and storing laundry, a drive motor provided in the tub to rotate the drum, and a water supply unit for supplying wash water to the tub , a drainage unit for draining wash water in the tub, a vibration measuring device provided in the tub and sensing vibration of the tub, a water level sensor for detecting the level of wash water stored in the tub, and washing by controlling each of the components It includes a control unit that proceeds with administration, rinsing, and dehydration,
The control unit,
1) When the vibration detected by the vibration measurement device during the dehydration cycle is included in the set range,
1-1) When the water level sensed by the water level sensor is below the set water level, it is determined that excessive foam has occurred inside the tub, and the rotation speed of the drum is kept constant to additionally supply the wash water through the water supply unit,
1-2) When the water level sensed by the water level sensor is equal to or higher than the set water level, it is determined that water clogging has occurred inside the tub, and the rotation speed of the drum is reduced for a certain period of time to drain the wash water through the drainage unit;
2) When the vibration detected by the vibration measurement device is out of the set range during the dehydration cycle,
2-1) A washing machine characterized in that the laundry is dispersed in the drum by reducing the number of revolutions of the drive motor. The washing machine according to claim 1, wherein the control unit maintains a rotational speed of the driving motor constant during the water supplying time of the water supplying unit when the water level detected by the water level sensor is equal to or less than a set water level. The washing machine according to claim 1, wherein the controller decelerates the rotational speed of the drive motor for a draining time of the draining part and maintains it for a predetermined time when the water level sensed by the water level sensor is equal to or higher than a set water level. delete delete delete The washing machine according to claim 1, wherein the vibration measuring device is one selected from an inertial sensor, a multi-axis inertial sensor, an acceleration sensor, an optical sensor, an angular velocity sensor, and a gyro sensor. The washing machine according to claim 1, wherein the vibration measuring device is provided at the rear of the upper part of the tub. delete delete delete driving a driving motor for rotating a drum in which laundry is accommodated;
measuring the amount of vibration of the tub in which the drum is accommodated through a vibration measuring device;
Calculating the magnitude of unbalance according to the measurement result of the vibration measuring device;
Including; measuring the water level of the washing water inside the tub through a water level sensor,
When the calculated unbalance size is less than or equal to a set value, determining whether excessive bubbles or water drop phenomena occur according to the measured water level value,
The step of determining the occurrence of the excessive foam or the occurrence of the water phenomenon,
1) If the vibration detected in the step of measuring through the vibration measuring device is included in the set range,
1-1) determining that excessive foam is generated when the measured water level is less than a set value, and additionally supplying wash water to the tub for a predetermined time by maintaining a constant rotation speed of the drum; or
1-2) if the measured water level is equal to or greater than the set value, it is determined that the water overflow has occurred, and the rotation speed of the drum is decelerated for a predetermined period of time to additionally drain the washing water of the tub for a predetermined period of time;
2) If the vibration detected in the step of measuring through the vibration measuring device does not include the set range,
2-1) The washing machine control method further comprising the step of distributing the laundry in the drum by reducing the number of revolutions of the drive motor. 13. The method of claim 12, wherein the step of calculating the size of the unbalance comprises reducing the speed of the drive motor and performing the unwinding of the laundry again when the size of the unbalance calculated is equal to or greater than a set value. A control method of a washing machine that does. delete delete delete delete delete delete delete

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