KR20170018374A - Controlling Method of Washing Machine - Google Patents

Abstract

The present invention relates to a method for controlling a washing machine, which is capable of accurately determining the amount of laundry. According to the present invention, provided is the method for controlling a washing machine including a tub adapted to store washing water, a drum rotatably provided in the tub and configured to accommodate laundry, and a motor configured to rotate the drum, the method comprising: a primary laundry amount determination step of determining the amount of laundry put into the drum before washing water is supplied to the tub; a data setting step of setting control data required for control of the washing machine based on the amount of laundry measured at the primary laundry amount determination step; a water supply step of supplying washing water to the tub; a secondary laundry amount determination step of determining the amount of laundry put into the drum; and a data resetting step of, when the amount of laundry determined at the primary laundry amount determination step is different from the amount of laundry determined at the secondary laundry amount determination step, resetting the control data based the amount of laundry determined at the secondary laundry amount determination step. In the primary and secondary laundry amount determination steps, the amount of laundry is determined by measuring a current value supplied to the motor in order to rotate the drum in a stationary state by a reference angle in a direction opposite to a direction set for washing, and the drum is rotated in the set direction by using potential energy acquired during the rotation in the opposite direction.

Description

[0001] The present invention relates to a control method of a washing machine,

The present invention relates to a control method of a washing machine capable of verifying control data set based on the amount of laundry laid on a washing machine and correcting control data set according to a verification result.

Generally, a washing device is a device for removing dirt buried in laundry through the action of water and a detergent.

The washing machine is roughly classified into a stirring type, a vortex type and a drum type washing machine. In the agitation type, the washing rods rising in the center of the washing tub are washed by rotating the washing rods to the left and right, and the swirl type washing is performed by using the frictional force between the water and the laundry to rotate the disk- Put the water, detergent and laundry in the drum and wash it.

The drum type washing machine includes a tub having an inside of a cabinet forming an outer appearance, a tub accommodating washing water, a drum accommodating the laundry in the tub, and a motor and a shaft for rotating the drum are provided on a rear surface of the tub .

When the laundry is started, the drum-type washing machine having the above-described configuration determines the amount of laundry loaded into the drum and sets control data necessary for controlling the washing machine. That is, the amount of washing water to be supplied to the tub, the appropriate amount of detergent required for washing, the actual rate of the motor capable of exhibiting the desired washing performance, the cycle time, which is the driving time of the washing machine, .

Therefore, when the amount of the waste to be dispensed is not good, optimized control data is not set, which makes it impossible to carry out optimal washing according to the waste amount.

SUMMARY OF THE INVENTION The present invention provides a control method of a washing machine capable of accurately determining the amount of laundry laid on a drum.

Another object of the present invention is to provide a control method of a washing machine, which can verify a measured laundry quantity, correct control data, and control the washing machine through the corrected control data.

Another object of the present invention is to provide a washing machine capable of modifying control data according to the type of laundry after judging the type of laundry laid on the drum.

The present invention provides a method of controlling a washing machine including a tub for storing wash water, a drum rotatably installed in the tub, and a motor for rotating the drum, Determining a quantity of laundry loaded into the drum before the washing water is supplied to the tub, and setting a control data required for controlling the washing apparatus based on the quantity measured at the first quantity measuring step A water supplying step of supplying the washing water to the tub, a second supplying amount determining step of determining the amount of the laundry introduced into the drum, a determining step of determining the amount of laundry to be discharged from the drum, And a data resetting unit for resetting the control data based on the batch determined in the secondary batch determination step when the determined batches are different from each other And determining the amount of current supplied to the motor in order to rotate the drum in the stopped state in the direction opposite to the set direction for washing in the primary discharging amount determining step and the secondary discharging amount determining step, And rotating the drum in the predetermined direction by using the position energy obtained during the rotation in the opposite direction.

According to still another embodiment of the present invention, the first primary discharge amount determination step may further include a first primary discharge amount determination step of setting a primary discharge amount level based on the measured current value.

According to an embodiment of the present invention, the secondary discharge amount determination step may further include a secondary discharge amount level determination step of setting a secondary release amount level based on the measured current value.

Further, in an embodiment of the present invention, the data resetting step may be performed when the primary release level and the secondary release level are different from each other.

According to another aspect of the present invention, there is provided a method for controlling a washing machine, comprising the steps of: determining a type of laundry using a current value measured in the second discharging amount determining step and a current value measured in the first discharging amount determining step; The porosity determination step may include determining a fluctuation load amount that is a difference between the current value measured in the second discharge amount determination step and the current value measured in the first discharge amount determination step, And comparing the load of the washing machine with the washing machine.

Further, an embodiment of the present invention may further include a secondary data resetting step of changing the control data based on the measured porosity when the variable load amount is larger than the reference fluctuation load amount.

Further, an embodiment of the present invention provides a control method of a washing machine, wherein the control data is an actual rate defined as a ratio of an ON time to a sum of an ON time and an OFF time of the motor.

Further, an embodiment of the present invention provides a method of controlling a washing machine, wherein the control data is a cycle time defined as an operating time of the washing machine set based on the laundry amount.

According to another aspect of the present invention, there is provided a washing machine comprising a tub for storing wash water, a drum rotatably installed in the tub for inputting laundry, and a motor for rotating the drum, And a start motion in which the drum is rotated by a predetermined reference angle in a direction opposite to the rotation before the drum is rotated, the method comprising the steps of: determining a quantity of laundry charged in the drum before the washing water is supplied to the tub; A data setting step of setting control data necessary for controlling the washing machine on the basis of the quantity value measured in the first discharging determination step, a water supplying step of supplying washing water to the tub, To rotate the drum in the stopped state by a predetermined reference angle in the opposite direction before the rotation in the set direction, Determining a quantity of the laundry to be charged into the drum by measuring a current value supplied to the drum; determining whether the quantity of laundry determined in the first discharging step and the amount of laundry determined in the second discharging amount determining step are different; And a data resetting step of resetting the control data on the basis of the batch amount determined in the batch determination step and rotating the drum in the set direction by using the potential energy obtained while the drum rotates in the opposite direction The present invention provides a control method for a washing machine.

The first discharge amount determination step may be performed by measuring a current value supplied to the motor to rotate the drum at an angle equal to a reference angle of the start motion. As shown in FIG.

According to still another embodiment of the present invention, the first primary discharge amount determination step may further include a first primary discharge amount determination step of setting a primary discharge amount level based on the measured current value.

According to an embodiment of the present invention, the secondary discharge amount determination step may further include a secondary discharge amount level determination step of setting a secondary release amount level based on the measured current value.

Further, in an embodiment of the present invention, the data resetting step may be performed when the primary release level and the secondary release level are different from each other.

According to the control method of the washing machine according to the present invention, it is possible to provide a control method of the washing machine which can accurately determine the amount of laundry loaded into the drum.

In addition, the present invention can provide an effect of providing a control method of a washing machine capable of verifying a measured amount to be corrected, modifying control data, and controlling the washing machine through the modified control data.

In addition, the present invention can provide a washing device capable of correcting control data according to the type of laundry after judging the type of laundry laid on the drum.

1 is a perspective view of a washing machine.
2 is a flowchart illustrating a method of controlling a washing machine according to an embodiment of the present invention.
3 is a flow chart according to another embodiment of the method of controlling the washing machine of the present invention.
4 is a conceptual diagram of the start motion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

It is to be understood that the present invention is not limited to the details of the embodiments described below, .

1 is a perspective view of a washing machine to be controlled by the washing machine of the present invention.

The washing machine includes a cabinet 110 forming an outer appearance, a tub 120 provided in the cabinet and supported by the cabinet, a drum 130 rotatably installed in the tub and into which laundry is introduced, A motor 140 for applying a torque to the drum to rotate the drum, and a control panel 115 allowing a user to select and execute a washing course.

The cabinet 110 includes a main body 111, a cover 112 attached to a front surface of the main body, and a top plate 116 coupled to an upper portion of the main body. The cover 112 may include an opening 114 that allows the laundry to enter and exit, and a door 113 that selectively opens and closes the opening.

The drum 130 forms a space for washing the laundry, and the drum 130 is rotated by receiving power from the motor 140. Since the drum 130 has a plurality of through holes 131, the washing water stored in the tub 120 can be introduced into the drum 130 through the through holes 131, The number can be leaked to the turbine. Therefore, when the drum rotates, the laundry introduced into the drum is removed from the washing water in the process of rubbing against the washing water stored in the tub.

Meanwhile, the drum 130 may further include a lifter 135 for stirring the laundry.

The control panel 115 is a configuration that allows a user to input information related to washing, as well as to confirm information relating to washing. That is, it is a configuration for interfacing with a user.

Accordingly, the control panel 115 includes an operation unit 117 and 118 for allowing a user to input a control command, and a display unit 119 for displaying control information according to the control command. The control panel may include a control unit (not shown) for controlling the operation of the washing machine including the operation of the motor according to the control command. The display unit 119 may include an LCD panel or an LED.

FIG. 2 is a flowchart illustrating an embodiment of a method for controlling a washing machine according to the present invention. In the washing method control method of the present embodiment, the first laundry amount determining step (S10) for determining the amount of laundry (hereinafter referred to as laundry amount) inserted into the drum before supplying the washing water to the tub is performed first.

The step S10 of determining the amount of primary discharging includes a drum rotating step S11 for rotating the drum by a predetermined reference angle in one direction and a step for measuring a magnitude of a current supplied to the motor for performing the drum rotating step A current value measuring step (S13), and a primary discharging amount level judging step (S15) for setting the discharging level by converting the measured current value.

The drum rotation step S11 is a step of rotating the drum by supplying a current to the motor, and the drum is preferably provided to rotate the drum at least over a reference angle to be described later.

The primary current value measuring step S13 is a step of measuring a magnitude of a current supplied to the motor to rotate the drum up to a preset reference angle.

The current value supplied to the motor is increased as the amount of the powder charged into the drum increases. Therefore, if the sweep amount data based on the current value supplied to the motor for rotating the drum to the reference angle is secured, the sweep amount can be determined by measuring the current value supplied when rotating the water supply drum to the reference angle.

As an example of determining the amount of the discharged material using the measured current value, the present embodiment starts the step S15 of determining the first discharged amount level.

The primary discharging level determining step S15 may be performed by comparing the discharging level data for dividing the discharging amount according to the predetermined current value range and the current value measured in the primary current value measuring step S13.

That is, in order to exhibit the desired washing performance of the washing machine, the laundry level data is classified into a large volume level, which is desirable to control the washing machine by changing control data such as an actual rate or a cycle time , And if the range of coverage that has become a classification criterion of the level of the level is set in terms of a current value range, the level of coverage corresponding to the current value range to which the current value measured in the measuring of the primary current value belongs, Quot; level "

Therefore, it is preferable that the present invention is understood to be a step of setting the amount of the laundry required for the control of the washing machine by using the measured current value without having to worry about the name of the "laundry amount level ".

After the first release amount determination step S10 determines the release amount level of the drum, a data setting step S20 is performed to set control data based on the measured release amount level.

The control data means data calculated on the basis of the amount of laundry put into the drum as data necessary for controlling the washing machine.

That is, an actual rate defined as a ratio of an ON time to a sum of an ON time and an OFF time of the motor, a cycle time defined as a time for driving the washing machine to perform a washing course selected by the user, A drum rotation pattern (drum motion) for controlling a rotating direction and a speed of the drum to make a laundry flow into the drum.

In particular, the cycle time may be set to a sum of the washing times required to complete the washing course selected by the user. That is, it can be set as the sum of the time required for the washing, rinsing, dewatering and drying steps provided in the washing course.

However, it is not excluded that the cycle time is set to mean individual time required for each stroke. That is, the cycle time setting step may individually set the washing cycle time, the rinsing cycle time, and the dehydration cycle time according to the amount of the laundry.

There is a problem that when the laundry loaded in the drum is wet (when the cloth is put in), the laundry apparatus for determining the laundry amount by only the first laundry amount determination step S10 can not detect the accurate laundry amount.

Generally, the data for determining the amount of laundry is set on the basis of the case where the laundry to be charged into the drum is dried laundry (dried laver). Therefore, when the above-mentioned data is used in the case where the wet cloth is put into the drum, an error may occur in the bulk amount judgment.

That is, since the weight of the wet cloth is the combined weight of the weight of the dry cloth and the weight of the water absorbed by the dry cloth, a greater amount of laundry than the laundry put on the actual drum may be recognized as being put into the drum.

In this case, the data setting step S20 may set the control data on the basis of the mistakenly determined amount, and then control the washing device based on the set control data.

As a result, the optimized control based on the amount of waste can not be performed, resulting in a waste of washing water, a waste of washing time, and a waste of electric power for washing.

The present embodiment is characterized in that a secondary discharge amount determination step (S32) that proceeds after water supply to prevent the above-described discharge sensation, a discharge amount measured in the secondary discharge amount determination step (S32) and the primary discharge amount determination step (S10) (S40) of verifying the amount of waste measured in the first waste amount determination step (S10) by comparing the amount of waste measured in the first waste amount determination step (S10).

After the data setting step S20, an initial washing step S30 including a water supplying step S31 for supplying the washing water to the tub and a secondary laundry amount determining step S32 is performed.

The initial washing step S30 is a step for removing dirt from the laundry based on the control data such as the cycle time set by the laundry amount determined in the first laundry amount determining step S10, In the step S32, the current value supplied to the motor is measured to rotate the drum up to the reference angle, and the current value after the water supply is measured, thereby verifying the accuracy of the volume level set in the primary volume determination step.

The amount of wash water supplied in the water supply step S31 may be set as a quantity based on the volume level measured in the first discharge amount determination step S10. That is, the amount of the washing water to be supplied to the tub can be determined through the experimental washing water level data that can guarantee the washing performance according to the amount of the laundry.

During the progress of the water supplying step S31 or after the water supplying step is finished, the second discharging amount determining step S32 proceeds. The second squeezing amount determination step (S32) is a step of determining the amount of laundry after the laundry is wetted through the water supply of the washing water.

Accordingly, the secondary discharge amount determination step may be performed after completion of the water supply step S31, or may be performed when the wash water is supplied at a predetermined water level during the water supply step S31. The case where the second sump quantity determination step is performed after completion of the water supply step and the second sump volume determination step (S32) during the water supply step are progressed is small. Therefore, for convenience of description, The case where the second replenishment amount determination step (S32) proceeds will be described as an example.

The water supply step S31 controls not only the water supply of the washing water but also the drum so that the drum is rotated by the set drum motion, thereby performing the operation of removing the dirt, the bubble dispersion, the detergent solution and the dirt buried in the laundry.

In the present invention, the means for determining the amount of discharge is to measure the magnitude of the current supplied to the motor to rotate the drum by a predetermined angle, and then compare the amount of current with the amount of collected data (or the amount of collected amount data) based on the current value. Is provided with a drum motion which is a rotation pattern of the drum, the secondary squeezing amount determination step S32 can be performed while the water supplying step S31 is in progress.

That is, after the start of the water supply step S31, a predetermined amount of wash water set to sufficiently wet the laundry is supplied to the tub, and then the current value supplied to the motor is measured to rotate the drum to the reference angle, Step S32 is performed.

The secondary discharge amount determination step S32 may include a secondary current value measurement step S321 for measuring a current value supplied to the motor to rotate the drum to the same reference angle as the primary discharge amount determination step S10, (S323) of determining a secondary volume level based on the value of the secondary volume level.

However, the volume level data for proceeding to the secondary volume level determination step (S323) may be such that the volume level measured in the first volume level determination step and the volume level measured in the second volume level determination step are the same .

That is, the volume level data for proceeding to the secondary volume level determination step (S323) is divided into volume levels that are the same as the volume level data for advancing the primary volume level determination step (S15) It is preferable that the current value range for distinguishing the level is provided by converting the current value range used for the first batch volume level data into the current value range for the clothes.

This is for verifying the accuracy of the quantity measured in the first quantity determination step S10 in the quantity quantity verification step S42, which will be described later, and a detailed description will be given later.

After the second squeezing amount determination step S32, a precise squeezing amount sensing step S40 is performed to determine whether the squeezing amount measured in the first squeezing amount determination step S10 is correct, The detection notification step S41 and the volume verification step S42.

The fine detection notification step S41 may be performed through the display unit to notify the user that the second blast amount determination step for correct determination of the blast amount is in progress.

Conventional washing machines equipped with the function of detecting the discharged amount have no way of verifying whether the control data based on the measured discharged amount is proper because the user can not verify whether the set amount is correct through the detection of the discharged amount.

Accordingly, in the precise detection notification step S41, the user is informed that the step of verifying the set level is performed in the first-amount-of-droplet determination step (S10), and the volume verification step S42 The control data can be reset by means of the control unit 30 to improve user confidence in the washing machine.

The volume verification step S42 may be performed by comparing the volume level (primary volume level) set in the primary volume level determination step S10 with the volume level (secondary volume level) set in the secondary volume level determination step S32 have.

If the primary release level and the secondary release level are the same, the release amount determined at the first release amount determination step is correct, and the control data based thereon is also appropriate, so it need not be modified. However, when the primary release level and the secondary release level are different from each other, the release level set in the primary release amount determination step () is erroneously set, and the control data based on this is incorrectly set.

For example, let's assume that the level of pulp is judged when the pulp is put into the drum. (The amount of the pulp is substantially the same, but the level of the pulp that is not wetted by the washing water and the amount of the pulp which is not wetted by the washing water).

Since the weight of the wet cloth increases with the weight of the water, the current value supplied to the motor for rotating the drum to the reference angle is larger than that of the wet wet cloth. Therefore, the primary release volume level determination step (S15) will set the release volume level (II) higher than the release level (I) of the cigarette put into the actual drum, and based on this, It will proceed.

The weight of the gauze varies greatly after the water supply, but the weight of the gauze is substantially the same even after the water supply, and the volume level data used in the second volume level determining step (S323) The level of the sacrifice level determined in the secondary sacrifice level determination step is the same as the level of the sacrifice saccharide level (I) injected into the actual drum, but the level of the sacrifice level II). ≪ / RTI >

Therefore, the control method of the washing apparatus of the present invention can verify whether the primary release level and the secondary release level are equal to each other, thereby determining the release amount set in the primary release amount determination step. Further, It will be done.

If the primary release level is equal to the secondary release level, the post-wash step S50 immediately follows. However, if the primary release level and the secondary release level differ from each other, the control data set based on the primary release level may be corrected Therefore, the present invention proceeds to the washing step (S50) after the data resetting step (S43).

The data resetting step S43 is a step of setting control data based on the secondary release level.

Accordingly, the present invention can provide an effective control method of a laundry apparatus capable of accurately measuring the amount of laundry and resetting erroneously set control data when the laundry amount is mistakenly set, thereby optimally controlling the laundry amount.

The post-washing step (S50) refers to a washing process that is performed after the precise amount detection step (S40) is defined for convenience of description. Therefore, the initial washing step (S30) and the post-washing step (S50) may be understood as a step of forming one washing step and distinguishing the precise amount detection step (S40) from the starting point.

3 is a flowchart illustrating a method of controlling a washing machine according to another embodiment of the present invention.

This embodiment is characterized in that the control data can be reset by classifying the type of laundry (porcelain) in the embodiment shown in FIG. Hereinafter, features different from the embodiment disclosed in FIG. 2 will be mainly described.

The control method of the washing apparatus according to the present embodiment may include a step S10 of measuring the amount of laundry charged into the drum, a step S20 of setting data based on the measured amount of laundry, An initial washing step S30 provided with a water supply step S31 for water supply and a secondary volume determination step S32 for measuring a water supply volume after the water supply, (S40).

The precise amount detection step S40 may include a precision detection notification step S41, a quantity verification step S42 and a porosity determination step S44.

The precise detection notifying step S41 is a step of notifying a user of the progress of the precise amount detecting step for verifying whether the control data set in the data setting step S20 is optimal, The same steps as those of the embodiment shown in FIG. 2 are omitted in order to confirm whether the primary release level and the secondary release level are equal to each other.

After the completion of the amount-of-discharge verification step (S42), the porosity determination step (S44) is performed. The porosity judgment step S44 is a step for judging the type (purifying) of laundry laid on the drum.

The laundry may be classified into a laundry requiring a strong washing power depending on the porcelain and a laundry capable of exhibiting a desired washing performance only with a weak washing power.

In general, when a laundry having a porcelain (jumper, etc.) that absorbs a lot of washing water is put into the drum, it is preferable to control the washing machine by a drum motion which can increase the cycle time or exhibit a strong washing force. When a laundry having a low absorbency is put into the drum, it is preferable to set the cycle time to a short time or to control the washing machine by a drum motion exhibiting a weak washing force.

Therefore, the present embodiment is characterized in that when the change of the control data based on the porosity is required through the porosity determination step S44, the control data (the control data set in the data setting step or the primary data resetting step) By providing a control method of the apparatus, it is possible to provide the user with the effect of providing the control data maximized to the bulk and the porosity.

The porosity determination step S44 may include determining a difference between a current value (secondary current value) measured in the secondary current value measuring step S321 and a current value (primary current value) measured in the primary current value measuring step And a variable load comparing step (S443) for determining whether the variable load amount is equal to or greater than a preset reference fluctuation load.

Regardless of the porosity, if the amount of steam injected into the drum is the same, the primary current value is constant, but the secondary current value will increase as the amount of laundry that absorbs water is increased. Therefore, when the variable load is large, it means that the porosity of laundry laid on the drum is a porcelain capable of absorbing a large amount of washing water. Therefore, if the difference between the secondary current value and the primary current value is used, .

On the other hand, the reference fluctuation load can be defined as a difference between a secondary current value and a primary current value for a specific porosity (hereinafter referred to as a reference porosity). It is preferable that the reference porosity is set by the manufacturer, and even if washing is performed with the control data set in the data setting step (S20) or the primary data resetting step (S43) without changing the control data, . In addition, it is preferable that a plurality of the reference porosities are set according to the level of the granules (granule standard).

Therefore, the fluctuating load comparing step S443 compares the measured variable load with the reference fluctuation load, and proceeds to the secondary data resetting step S45 if the measured fluctuation load is equal to or greater than the reference fluctuation load.

The larger fluctuation load than the reference fluctuation load means that the load of the laundry introduced into the drum is high, which means that the weight of the laundry is large, which means that it is desirable to wash the laundry using a strong washing force and a long cycle time.

On the other hand, having a fluctuating load less than the reference fluctuation load means that it is not necessary to change the control data, such as the cycle time, based on the porosity, .

However, the above-described embodiment does not exclude the resetting of the control data when the variable load amount is less than the reference fluctuation load amount. That is, the present embodiment may be extended so that the step of increasing the control data such as the cycle time proceeds in the case of the reference fluctuation load amount or more, and the step of decreasing the control data such as the cycle time in the case of less than the reference fluctuation load amount.

On the other hand, the feature of resetting the control data through the above-mentioned textured texture may be implemented in combination with the embodiment of FIG. 2 as shown in FIG. 3, but may be implemented separately from the embodiment of FIG.

That is, the precise amount detection step S40 of the embodiment disclosed in FIG. 3 may be controlled so that the precursory determination step S44 is performed immediately after the precise detection notification step S41. In this case, since the replenishment verification step (S42) and the primary data resetting step (S43) do not proceed, the secondary data resetting step (S45) is performed according to the result of the fluctuation load comparing step (S443) .

Hereinafter, a control method of the washing apparatus according to another embodiment of the present invention will be described. The present embodiment is the same as the control method disclosed in FIG. 2 and FIG. 3, but is characterized in that the point of time at which the second discharge amount determination step is performed is performed during a start motion in which the drum motion is advanced.

The drum motion refers to a drum rotation pattern (drum motion) that controls the direction and speed of rotation of the drum to allow a specific amount of laundry to be introduced into the drum, as described above. Since the direction of dropping and the point of dropping of the laundry placed in the drum due to the drum motion are different, the flow of laundry in the drum can be different.

Since the laundry is raised by the lift 135 provided on the inner peripheral surface of the drum when the drum rotates, the shock applied to the laundry can be changed by controlling the rotating speed and the rotating direction of the drum. That is, friction between laundry, friction between laundry and washing water, and dropping impact of laundry can be different. In other words, the laundry can be knocked or rubbed for washing, and the laundry can be dispersed or turned upside down at different degrees.

Therefore, if the control method of the washing machine with various drum motions can be provided, the drum motions may be changed according to the type of laundry, the contamination degree of the laundry, the respective steps, The laundry can be treated. Accordingly, the washing efficiency of the laundry can be improved, and the washing time can be prevented from being excessively long due to a single drum motion, thereby reducing the time required.

The most basic form of the drum motion is to change the drop position of the laundry by controlling the rotating speed of the drum. It is also possible to change the flow pattern of the laundry in the drum by changing the rotational direction of the drum in addition to changing the rotating speed of the drum.

On the other hand, in the case of a starting motion (also called Active-i motion) in which the drum is rotated in the direction of rotation set in the drum motion after rotating the drum motion by a predetermined angle in the direction opposite to the rotation direction (clockwise or counterclockwise) May be included.

In executing the drum motion, if the drum is immediately rotated at a set speed (set number of revolutions, rpm) of the drum motion, a current peak at which the current value supplied to the motor sharply increases at the beginning of the drum motion may occur.

That is, since the load of the motor is greatest between the lowest point of the drum and the point of 90 degrees in the rotational direction, laundry is put into the drum before the start of the drum motion, and therefore, in order to rotate the drum at the set speed of the drum motion, And the amount of current to be supplied becomes even larger when the amount of the charged drum is large.

If a current peak occurs at the beginning of the drum motion, it may cause a problem in the safety of the washing machine. If the control to change the actual rate of the motor is performed to secure the safety of the washing machine, Implementation of the drum motion after the start motion for easy implementation of the motion can solve the above-mentioned problem.

That is, the starting motion in which the drum is rotated in the direction of rotation set in the drum motion after rotating the drum by a predetermined angle in the direction opposite to the setting direction of the drum motion uses the position energy obtained while the laundry rotates in the direction opposite to the setting direction of the drum motion Therefore, it is possible to prevent the rapid increase of the current value supplied at the beginning of the drum motion, and the current value to be supplied at the beginning of the drum motion is determined based on the amount of the drum inserted into the drum. It is possible to prevent a drastic increase in the supply current which can be caused in the drum motion.

4 is a view showing the start motion. FIG. 4A shows a state in which laundry is put into the drum before start-up motion, FIG. 4B shows a state in which the drum motion is set in a clockwise direction (Observation start) in which the drum is rotated to the reference angle.

That is, when the drum motion is set to the clockwise direction, the observation start will cause the drum to rotate counterclockwise, and if the drum motion is set to the counterclockwise direction, the observation start will cause the drum to rotate clockwise. Hereinafter, the case where the setting direction of the drum motion is clockwise will be described as a reference.

At the time of start of observation, the drum is rotated counterclockwise by a predetermined reference angle. The "reference angle" can be selected from a significant interval of 15 to 45 degrees, which can detect the amount of burdens through the current supplied to the motor (hereinafter referred to as " Fig.

In order for the drum to rotate to the reference angle, the controller supplies current to the motor. The current value supplied when the amount of laundry is large and the current value supplied when the amount of laundry is small are different.

On the other hand, the maximum value of the starting current value required at the start of observation is stored in a storage means such as a memory by the control unit, and is utilized at the time of starting the open loop described later.

When the observation start is terminated, the present invention brakes the motor in order to maximize the potential energy of the laundry. As shown in FIG. 4 (c), the laundry loaded into the drum and the drum may be elevated by a predetermined angle due to inertia of the observer's motion.

That is, the position A of the laundry shown in FIG. 4 (c) is the maximum point of the position energy of the laundry by the observation start, and the position energy of the laundry when the open loop operation There is an advantageous effect of increasing the rotating speed of the drum when the open loop is started.

On the other hand, the maximum point A of the potential energy that the laundry can have through the observation start can be determined through a sensing device such as a Hall sensor provided in the motor.

Since the motor is braked after the observation start is completed, the drum will rotate by inertia in the same rotation direction (counterclockwise direction) as the rotation direction at the start of observation, but at the point (A) where the potential energy of the laundry becomes maximum, It will rotate clockwise after stopping due to its own weight.

Therefore, when the Hall sensor recognizes the rotation of the drum or the rotation direction of the drum, the point of time when the position energy of the laundry reaches the maximum point A is reached. At this point, Start is started.

The open loop start is a section for rotating the drum clockwise using the starting current value supplied at the start of observation and corresponds to twice the angle formed by the lowest point O of the drum and the maximum energy point A of the laundry (Clockwise) to rotate the drum.

That is, in the open loop start, the angle from the lowest point O of the drum to the maximum energy point A of the laundry and the position (B, the second reference angle or the second reference position Are equal to each other. This is to maximize the potential energy secured by the observation start and to prevent current peaks in which the current value supplied to the motor sharply increases in the section (O-B section) where the load of the motor is maximized.

It is preferable that the current value supplied to the motor during the open loop start operation is supplied as the maximum value of the starting current supplied simultaneously with the observer.

If the drum motion is implemented without starting observation, or if the current required for the rpm set in the drum motion is directly supplied to the motor after the start of the observation, there may be a problem of a current peak in which the current value supplied to the motor rises sharply This is because, as described above, when the laundry passes through the position B corresponding to the maximum point A of the potential energy, the load of the motor becomes maximum and a large current is instantaneously required. Therefore, the open loop operation is performed in a period in which the load of the motor is maximized by rotating the drum to the maximum value of the starting current required for the above-described starting operation up to the position B corresponding to the maximum energy point A of the laundry Thereby preventing a sudden increase in the current value.

When the open loop start is completed, the feedback start shown in Fig. 4 (e) is started. The feedback start is a step of converting the maximum value of the starting current supplied to the motor in the open loop start to a current value required for rotating the drum at a set speed (set rotation speed, rpm) of the drum motion. The switching to the feedback operation is possible by monitoring the rotation angle of the drum through a sensing device such as the hall sensor described above. When the current value supplied to the motor through the feedback operation is changed, the predetermined drum motion proceeds .

Therefore, the washing control method of this embodiment is the same as the control method disclosed in FIGS. 2 and 3, but is characterized in that the secondary discharging amount determining step proceeds when the starting of the starting motion is started.

Since the drum motion is always provided in the washing machine for washing, it is possible to provide the starting motion before proceeding with the drum motion, and to control the secondary laundry amount during the starting operation of the starting motion to improve the stability of the washing machine Effect and the effect of judging the secondary discharge amount can be realized at the same time.

However, in this case, the reference angle required for performing the second blast amount determination step should be set to be the same as the reference angle for the observation start, and the reference angle required for performing the first blast amount determination step is determined as the second blast amount determination It is preferable to set the reference angle equal to the reference angle of the observer. Therefore, the current value measured in the secondary current value measuring step becomes the starting current value measured at the time of starting observation.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

110: Cabinet
120: the tub
130: Drums
140: motor

Claims (13)

A control method of a washing machine comprising a tub for storing washing water, a drum rotatably installed in the tub for inputting laundry, and a motor for rotating the drum,
Determining a quantity of the laundry to be charged into the drum before the washing water is supplied to the tub;
A data setting step of setting control data necessary for the control of the washing machine on the basis of the quantity value measured in the first discharging determination step;
A water supply step of supplying washing water to the tub;
Determining a quantity of laundry to be charged into the drum;
A data resetting step of resetting the control data on the basis of the amount determined in the second dispensing amount determination step when the amount of the material determined in the first dispensing step and the amount of material determined in the second dispensing amount determination step are different from each other;
Wherein in the determining of the primary discharging amount and the determining of the secondary discharging amount, the current value supplied to the motor is measured to determine the discharging amount so as to rotate the drum in the stopped state in the opposite direction to the set direction for washing, And rotating the drum in the predetermined direction by using the position energy obtained during the rotation in the opposite direction. The method according to claim 1,
The method of claim 1, wherein the determining step further comprises determining a first release level based on the measured current value. 3. The method of claim 2,
And determining the secondary laundry amount based on the measured current value. The method of claim 1, further comprising: determining a second laundry amount level based on the measured current value. The method of claim 3,
Wherein the data resetting step is performed when the primary release level and the secondary release level are different from each other. 5. The method of claim 4,
Further comprising the step of determining the type of laundry using the current value measured in the secondary discharging amount determining step and the current value measured in the first discharging amount determining step,
The porosity determination step
A variable load amount which is a difference between a current value measured in the secondary discharge amount determination step and a current value measured in the primary discharge amount determination step,
And comparing the reference fluctuation load amount defined as the fluctuating load amount of the standard valve set according to the fluid level. 6. The method of claim 5,
And a secondary data resetting step of changing the control data based on the measured porosity when the variable load amount is larger than the reference fluctuation load amount. The method according to claim 1,
Wherein the control data is an actual rate defined as a ratio of an ON time to a sum of an ON time and an OFF time of the motor. The method according to claim 1,
Wherein the control data is a cycle time defined as an operation time of the washing machine set on the basis of the laundry amount. A drum rotatably installed in the tub for inputting laundry, and a motor for rotating the drum, wherein the drum rotates in a direction opposite to a predetermined direction A control method for a washing machine having a starting motion rotated by an angle,
Determining a quantity of the laundry to be charged into the drum before the washing water is supplied to the tub;
A data setting step of setting control data necessary for the control of the washing machine on the basis of the quantity value measured in the first discharging determination step;
A water supply step of supplying washing water to the tub;
The amount of laundry introduced into the drum is measured by measuring a current value supplied to the motor to rotate the drum in the stopped state by a predetermined reference angle in the reverse direction before the rotation in the set direction, Determining a second replenishing amount to be determined;
And a data resetting step of resetting the control data on the basis of the amount determined in the second dispensing amount determination step when the amount of the material determined in the first dispensing step and the amount of material determined in the second dispensing amount determination step are different,
Wherein the drum is rotated in the predetermined direction by using the potential energy obtained while the drum rotates in the opposite direction. 10. The method of claim 9,
Wherein the determining step is performed by measuring a current value supplied to the motor to rotate the drum at an angle equal to a reference angle of the starting motion. 11. The method of claim 10,
The method of claim 1, wherein the determining step further comprises determining a first release level based on the measured current value. 12. The method of claim 11,
And determining the secondary laundry amount based on the measured current value. The method of claim 1, further comprising: determining a second laundry amount level based on the measured current value. 13. The method of claim 12,
Wherein the data resetting step is performed when the primary release level and the secondary release level are different from each other.

Images