KR101700185B1 - Controlling Method of Washing Machine - Google Patents

Abstract

The present invention includes a tub for storing wash water, a drum rotatably installed in the tub for inputting laundry, a motor for rotating the drum, and a display unit for displaying a cycle time defined as a running time based on the amount of laundry A method of controlling a washing machine comprising the steps of: determining a quantity of laundry to be charged into the drum before washing water is supplied to the tub; determining a cycle time based on the quantity measured in the first quantity A water supply step of supplying the washing water to the tub, a second laundry amount determination step of determining the amount of laundry laid on the drum, and a second laundry amount determination step of determining the laundry amount determined in the first laundry amount step and the second laundry amount If the batches determined in the determination step are different from each other, the cycle time is reset based on the batch amount determined in the secondary batch determination step And a primary resetting display step of displaying the reset cycle time on the display unit. The present invention also relates to a control method of a washing machine.

Washing machine, batch verification, textured paper, cycle time change, control data change

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control method of a washing machine, which can accurately determine the amount of laundry loaded in a washing machine.

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, the amount of detergent required, the actual rate of the motor, the cycle time of the washing machine, and the like are set based on the replenishing amount.

Therefore, when the amount of waste is not properly determined, erroneous control data is set. Therefore, it is impossible to perform optimal washing according to the amount of waste.

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.

It is another object of the present invention to provide a washing machine capable of judging the quality of laundry to be judged on the type of laundry loaded in the drum.

It is another object of the present invention to provide a control method of a washing machine which can verify a measured laundry quantity, correct a cycle time, and control the washing machine with a modified cycle time.

The present invention includes a tub for storing wash water, a drum rotatably installed in the tub for inputting laundry, a motor for rotating the drum, and a display unit for displaying a cycle time defined as a running time based on the amount of laundry A method of controlling a washing machine comprising the steps of: determining a quantity of laundry to be charged into the drum before washing water is supplied to the tub; determining a cycle time based on the quantity measured in the first quantity A water supply step of supplying the washing water to the tub, a second laundry amount determination step of determining the amount of laundry laid on the drum, and a second laundry amount determination step of determining the laundry amount determined in the first laundry amount step and the second laundry amount If the batches determined in the determination step are different from each other, the cycle time is reset based on the batch amount determined in the secondary batch determination step A cycle resetting step and a primary resetting display step of displaying the reset cycle time on the display unit.

In this case, it is preferable that the method further includes the step of verifying the amount of waste determined in the first discharging step and the amount of discharging determined in the second discharging amount determining step, and a precision sensing informing step of informing the user of the progress of the discharging amount verification step can do.

In addition, the primary discharge amount determination step and the secondary discharge amount determination step may be performed by measuring a current value supplied to the motor to rotate the drum by a reference angle.

In addition, the primary discharging amount determining step may further include a primary discharging amount determining step of setting a primary discharging amount level based on the measured current value.

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.

The cycle time resetting step may be performed when the primary discharge level and the secondary discharge level are different from each other.

The method may further include determining a type of laundry classified according to the moisture content using the current value measured in the secondary quantity determination step and the current value measured in the first quantity determination step.

Further, the present invention may further comprise a second cycle time resetting step of resetting the cycle time based on the measured porosity.

The porosity determination step may be defined as a variation load amount that is a difference between a current value measured in the second discharge amount determination step and a current value measured in the first discharge amount determination step, By comparing the reference fluctuation load amount.

Further, the present invention may further comprise a secondary data resetting step of changing the cycle time based on the measured porosity when the fluctuating load amount is larger than the reference fluctuating load amount.

According to another aspect of the present invention, there is provided a washing machine comprising a tub for storing washing water, a drum rotatably installed in the tub for inputting laundry, a motor for rotating the drum, and a display unit And a start motion in which the drum is rotated by a predetermined reference angle in a direction opposite to the predetermined direction before the drum is rotated in the predetermined direction for washing the laundry, A cycle time setting step of setting a cycle time based on a quantity value measured in the first discharge amount determination step, a water supply step of supplying the washing water to the tub, The current value supplied to the motor for rotating the drum by the reference angle is measured while the running motion is being performed And determining a quantity of the laundry to be charged into the drum when the amount of the laundry determined in the first discharging step is different from the amount of the laundry determined in the second discharging amount determining step, A cycle time resetting step of resetting the cycle time based on the cycle time and a primary resetting display step of displaying the reset cycle time on the display unit .

In this case, the primary 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 the reference angle of the start motion.

Further, it is preferable that the primary discharging amount determining step further includes a primary discharging amount determining step of setting a primary discharging amount level based on the measured current value, And a second secondary release level determining step of setting a release level.

The cycle time resetting step may be performed when the primary discharge level and the secondary discharge level are different from each other.

Further, the present invention may further include a dead-rate verification step of determining whether the primary release level and the secondary release level are different from each other, and a precision detection notification step of informing a user of the progress of the release amount verification step.

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 the effect of providing a washing device capable of judging the quality of the laundry.

In addition, the present invention can provide a control method of a washing machine capable of verifying a measured amount of laundry, correcting a cycle time, and controlling the washing machine with a modified cycle time.

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 for allowing the laundry to enter and exit, and a door 113 for selectively opening and closing the opening.

The drum 130 forms a space for washing the laundry. 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.

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 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 increases as the amount of the charged powder charged to the drum increases. Therefore, if the current value data supplied to the motor is secured to rotate the drum up to the reference angle according to the amount of the charged particles, It is possible to judge the amount of the laundry put into the drum through the current value supplied when rotating.

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 discharge level determining step S15 is performed by comparing the discharge level data classified according to the range of the predetermined current value and the current value measured in the primary current value measuring step.

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 the classification reference of the level of the accumulated amount is converted into the range of the current value, the level of coverage corresponding to the range of the current value to which the current value measured in the measurement of the primary current value belongs, Can be set to the levitation 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 level of the discharged amount in the drum is determined through the first discharging amount determination step (S10), a cycle time setting step (S20) is performed to set a cycle time based on the measured discharged amount level.

The cycle time may be defined as a sum of the washing times required when the laundry course selected by the user is performed according to the amount of laundry put on the drum.

That is, in the washing machine including the washing cycle, the rinsing cycle, the dewatering cycle and the drying cycle, the cycle time is a sum of the time required for each cycle. On the other hand, in the washing machine having no drying function, the cycle time will be the sum of the time required for the washing, rinsing and dewatering processes.

However, the control method of the washing machine of the present invention may also mean the individual time required for each cycle of the cycle time. That is, the cycle type setting step may set the wash cycle time, the rinse cycle time, and the dewatering cycle time separately according to the amount of the laundry.

When the cycle time is set based on the amount of the laundry, the cycle time display step S30 is performed to display the set cycle time on the display unit so that the user can check the time required for washing.

On the other hand, there is a problem that when the laundry loaded in the drum is wet (when a cloth is put in), the laundry apparatus for determining the laundry amount by only the first laundry amount determination step S10 can not detect an 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 cycle time setting step (S20) may set the cycle time based on the incorrectly determined amount, and then control the washing device based on the cycle time. The once set cycle time is not corrected I did.

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 (S42), a secondary discharge amount determination step (S42), and a primary discharge amount determination step (S10) are performed so as to prevent the above- (S50) 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 cycle time display step S30, an initial washing step S40 is carried out including a feeding means S41 for supplying the washing water to the tub and a secondary laundry amount determining step S42. The initial washing step S40 is a step for removing dirt from the laundry based on the cycle time set by the laundry amount determined in the first laundry amount determination step S10, S42) is a step for verifying the accuracy of the volume level set in the primary volume determination step by measuring the current value supplied to the motor to rotate the drum to the reference angle and measuring the current value after the water supply.

The amount of the washing water supplied in the water supplying step S41 may be set to a quantity based on the amount of the laundry (or the laundry amount) measured in the first laundry amount determining step S10. That is, the amount of the washing water to be supplied to the tub can be determined through experimental level data that can guarantee the washing performance according to the amount of the laundry.

However, although the case where the watering step S41 is performed after the cycle time display step S30 in the present embodiment has been described, the above steps may be performed at the same time.

In addition, since the second laundry amount determining step S42 is a step of determining the laundry amount after the laundry is wet through the water supply, it may proceed during the water supplying step S41 or after the water supplying step ends.

The case where the second squeezing amount determination step is performed after completion of the water supply step and the case where the second squeezing amount determination step (S42) is performed during the progress of the water supply step is very small, and therefore, for convenience of explanation, The case where the second secondary discharging amount determination step S42 proceeds will be described as an example.

In the water supply step S41, the motor is controlled not only to feed the wash water but also to rotate the drum by the set drum motion, thereby performing the operation of removing the dust, the bubble dispersion, the detergent solution and the dirt buried in the laundry.

In the present invention, the means for determining the amount of waste 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 the current with the amount of collected data (or the amount of collected amount data) based on the current value. (S42) can be performed while the water supply step S41 is in progress, because the secondary drum discharge amount determining step S42 includes the drum motion which is the rotation pattern of the drum.

On the other hand, after the start of the water supply step (S41), 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 S42 is performed.

The secondary discharge amount determination step S42 may include a secondary current value measurement step S421 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, (Step S423) of setting a release level based on the value of the second release amount level.

However, in the case of the same basilisk, the catch level measured for the second catch level determination step (S423) may be the same as the catch level determined in the first catch level determination step .

That is, the batch level data for proceeding to the secondary batch level determination step (S423) is divided into batch levels at the same number of batch levels as the batch level data for proceeding to the first batch level determination step (S15) It is preferable that the current value range for distinguishing the level is provided by converting the range of the current value used for the primary battery level data into the range of the current value for the battery.

This is for verifying the accuracy of the quantity measured in the first-quantity-of-the-first-quantity determination step (S15) in the quantity-of-quantity verification step (S53), which will be described later.

After the secondary sump determination step S42, an accurate sump quantity determination step S50 is performed to determine whether the sump quantity measured in the primary sump quantity determination step S15 is correct, And may include a detection notification step (S51) and a volume verification step (S53).

The fine detection notification step S51 may be performed through the display unit to notify the user that the second batch determination step is in progress for accurate determination of the batch quantity.

Conventional washing machines equipped with a function for detecting the amount of waste have not been able to verify whether the amount set through the detection of the quantity is correct or not, and there is no way to check whether the cycle time based on the measured quantity is proper.

Therefore, the precise detection notifying step S51 may include: a mass inspecting step S53 of notifying the user that the mass level set in the first mass inspecting step S10 is proceeded, followed by a precise sensing notifying step S51; It is possible to improve the user's trust in the washing machine by displaying the reset cycle time through the reset display step S57.

The bulk verification step S53 is performed by comparing the level of the primary dose (primary dose level) set in the first primary dose determination step S10 with the level of the secondary dose (secondary dose level) set in the secondary secondary dose determination step S42 .

If the first discharge volume level and the second discharge volume level are the same, the volume determined in the first discharge volume determination step is correct, and the cycle time based on this 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 (S10) is erroneously set and the cycle time 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 volume level I of the natural gas introduced into the actual drum, and the cycle time will be set based on the volume level II to proceed with the laundry .

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 determination step (S423), which proceeds after the water supply, 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-cleaning step S60 is immediately performed. However, if the primary release level and the secondary release level are different from each other, the set cycle time is corrected based on the primary release level The present invention proceeds to the washing step S60 after the cycle time reset step S55 and the reset display step S57.

The cycle time resetting step S55 is a step of setting a cycle time based on the second discharge amount level, and the resetting display step S57 is a step of notifying the user of the reset cycle time through the display unit.

Therefore, the present invention can provide an effective control method of a laundry apparatus capable of accurately measuring a discharged amount and capable of optimizing control over the amount of discharged by resetting a set cycle time based on a discharged amount when a discharged amount is mistaken It will be.

Meanwhile, the cycle time resetting step S55 may be performed in a manner of changing the total time set in each of the strokes (washing stroke, rinse stroke, dehydration stroke, drying stroke, etc.) provided in the washing course selected by the user, The total cycle time of the first set cycle time may be maintained but the ratio of each cycle time set in each cycle may be changed.

The post-washing step (S60) refers to a washing step that is performed after the precise amount detection step (S51) in a defined step for convenience of explanation. Therefore, the initial washing step (S40) and the post-washing step (S60) may be understood as a step of forming one washing step and distinguishing the precise amount detection step (S51) from the starting point.

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

The present embodiment is characterized in that the cycle time can be reset by classifying the type of laundry (porosity) 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 includes a primary laundry step S10 for measuring the amount of laundry laid on the drum, a cycle time setting step S20 based on the measured laundry amount, An initial washing step S40 including a water supplying step S41 for supplying washing water to the tub and a secondary discharging amount determining step S42 for measuring the amount of the foreign matter in the tub, And a step S50 for detecting a large quantity of the measured quantity.

The precise amount detection step S50 includes a precision detection notification step S51, a bulk amount verification step S52, and a porosity determination step S55.

The precision detection informing step S51 is a step of notifying the user whether the accurate amount detecting step S50 is performed to verify whether the cycle time set in the cycle time setting step S20 is optimal or not, (S52) is a step for confirming whether the primary release level and the secondary release level are equal to each other, and the same description as in the embodiment shown in FIG. 2 is omitted.

After the completion of the amount-of-discharge verification step (S52), the porosity determination step (S55) is performed. The porosity judgment step S55 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, in the case where it is necessary to change the cycle time based on the porosity through the porosity determination step S55, the present embodiment resets the preset cycle time (the cycle time set in the cycle time setting step or the first cycle time resetting step) Thereby providing a user with an effect of providing the user with the cycle time maximized in the amount of the waste and the quality of the waste.

The porosity determination step S55 is a step of determining the porosity of the battery by comparing the current value (secondary current value) measured in the secondary current value measuring step S421 and the current value (primary current value) measured in the primary current value measuring step S13 A variable load determination step S551 for calculating a variable load amount defined as a difference and a variable load comparison step S553 for determining whether the variable load amount is equal to or greater than a predetermined reference variation 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). Preferably, the reference porosity is set by the manufacturer, and even if washing is performed at the cycle time set in the cycle time set in the cycle time setting step (S20) or the cycle time set in the first cycle resetting step (S53) without changing the cycle time It can be defined as a free form. In addition, it is preferable that a plurality of the reference porosities are set according to the level of the granules (granule standard).

Accordingly, the fluctuating load comparison step S553 compares the measured variable load amount with the reference fluctuation load, and when the measured fluctuation load amount is equal to or greater than the reference fluctuation load, the second cycle time resetting step (S56) The cycle time display step S57 is performed.

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 of less than the reference fluctuation load means that it is not necessary to change the cycle time without changing the cycle time based on the porosity, so it is not necessary to change the cycle time.

However, the above embodiment does not exclude the case where the cycle time is reset when the variable load amount is less than the reference fluctuation load amount. That is, the step of increasing the cycle time is performed in the case of the reference fluctuation load amount or more, the step of decreasing the cycle time in the case of less than the reference fluctuation load amount is performed, and the step of displaying the changed cycle time may be extended You may.

In particular, the secondary cycle time resetting step S56 may be performed in a manner of changing the total time set in each of the strokes (washing, rinsing, dehydrating, drying, etc.) provided in the washing course selected by the user have.

Furthermore, the second cycle time resetting step S56 may be performed by maintaining the sum of the initially set cycle times, but changing the ratio of each cycle time set in each stroke. This would be an efficient resetting method to improve the wash performance if it is advantageous to increase the cycle time of a particular stroke depending on the porosity.

Meanwhile, the feature of resetting the cycle time through the above-mentioned textured paper may be implemented in combination with the embodiment of FIG. 2 as shown in FIG. 3, but may be performed separately from the embodiment of FIG.

That is, the precise amount detection step (S50) of the embodiment disclosed in FIG. 3 may be followed by the precursory determination step (S55) immediately after the precise detection notification step (S51). In this case, since the bulk amount verification step S52, the cycle time primary resetting step S53, and the primary reset cycle time display step S54 are excluded, the fluctuation load comparison step S553 of the porosity determination step S55 The cycle time secondary resetting step and the secondary resetting cycle time displaying step will proceed according to the result.

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 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 in the early stage of the drum motion, it may cause a problem in the safety of the washing machine. In order to secure the safety of the washing machine, if the control to change the actual rate of the motor is performed, deterioration of the washing performance may be inevitable For easy implementation of the drum motion, the above-described problem can be solved by implementing the drum motion after the start motion.

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, the point at which the Hall sensor recognizes rotation of the drum or the rotation direction of the drum reaches the point A where the potential energy of the laundry reaches the maximum. 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 at the above-mentioned 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 method control method of the present embodiment is similar to the control method disclosed in FIGS. 2 and 3, but is characterized in that the secondary discharge amount determination step () proceeds at the time of starting observation of the starting motion.

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 second replenishing 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.

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.

Claims (15)

A washing machine comprising: a tub for storing wash water; a drum rotatably installed in the tub for inputting laundry; a motor for rotating the drum; and a display unit for displaying a cycle time defined as an operation time based on the amount of laundry In the control method, Determining a quantity of the laundry to be charged into the drum before the washing water is supplied to the tub; A cycle time setting step of setting a cycle time based on a quantity value measured in the first discharge amount 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 cycle time resetting step of resetting the cycle time based on the amount of the blast determined in the second blast amount determination step when the blast amount determined in the first blast amount determination step and the blast determination amount determined in the second blast amount determination step are different from each other; A primary reset display step of displaying the reset cycle time on the display unit; And 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 a predetermined direction by using the potential energy obtained during the rotation in the opposite direction. The method according to claim 1, Determining whether the amount of the blast determined in the first blasting step and the amount of blastant determined in the second blast determination step are different from each other; And a precise sensing notifying step of informing a user of the progress of the sweep amount verification step. delete 3. The method of claim 2, The method of claim 1, wherein the determining step further comprises determining a first release level based on the measured current value. 5. The method of claim 4, 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. 6. The method of claim 5, Wherein the cycle time resetting step is performed when the first discharge amount level and the second discharge amount level are different from each other. The method according to claim 6, Determining a type of laundry classified according to a degree of absorbing the washing water by using the current value measured in the secondary discharging amount determining step and the current value measured in the first discharging amount determining step; And The porosity determination step may include: A fluctuation load amount corresponding to 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 a reference fluctuation load amount To the washing machine. 8. The method of claim 7, And a second cycle time resetting step of resetting the cycle time based on the measured porosity. delete 9. The method of claim 8, And a second data resetting step of changing the cycle time based on the measured porosity when the variable load amount is larger than the reference fluctuation load amount. A display unit that displays a cycle time defined as a running time based on the amount of laundry, a drum that is rotatably provided in the tub and into which laundry is charged, a motor that rotates the drum, A control method for a washing machine having a starting motion that rotates in a direction opposite to a predetermined reference angle before rotating in a predetermined direction for washing, Determining a quantity of the laundry to be charged into the drum before the washing water is supplied to the tub; A cycle time setting step of setting a cycle time based on a quantity value measured in the first discharge amount determination step; A water supply step of supplying washing water to the tub; The amount of laundry supplied to 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; A cycle time resetting step of resetting the cycle time based on the amount of the blast determined in the second blast amount determination step when the blast amount determined in the first blast amount determination step and the blast determination amount determined in the second blast amount determination step are different from each other; And a primary resetting display step of displaying the reset cycle time on the display unit, Wherein the drum is rotated in a predetermined direction by using a potential energy obtained while the drum rotates in the opposite direction. 12. The method of claim 11, 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. 13. The method of claim 12, Wherein the determining step includes determining a first release amount level based on the measured current value, 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. 14. The method of claim 13, Wherein the cycle time resetting step is performed when the first discharge amount level and the second discharge amount level are different from each other. 15. The method of claim 14, Determining whether the primary release level and the secondary release level are different from each other; And a precise sensing notifying step of informing a user of the progress of the sweep amount verification step.

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