KR101638539B1 - Washing machine and method for controlling washing machine - Google Patents

Abstract

The present invention relates to a laundry processing apparatus and a control method thereof. A laundry processing apparatus and a control method thereof according to the present invention detect a state of laundry in a drum or a balance state of a laundry processing apparatus by using a current value of a motor measured while the drum of the laundry processing apparatus is rotated, Thus, it is possible to prevent damage to the laundry processing apparatus while improving the stability of the laundry processing apparatus.

Laundry, processing equipment, laundry quantity, quantity, detection, balance state, current

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry processing apparatus and a control method thereof, and more particularly, to a laundry processing apparatus and a control method thereof for detecting a state of laundry and a balanced state of laundry processing apparatus.

BACKGROUND OF THE INVENTION [0002] Generally, a drum washing machine in a laundry processing apparatus performs washing by using friction between a rotating drum and laundry in response to a driving force of a motor in a state where detergent, washing water and laundry are put in a drum, No laundry is tangled with each other, and can be washed and scrubbed.

After the washing and rinsing process is completed, the dewatering process is performed. In order for the dewatering process to proceed, it is necessary to accurately detect the amount of laundry. For this, various coefficients such as characteristic speed value, rotation angle at a specific speed, time to a specific speed, and duty (PWM) value of a specific speed are used. However, this method has a problem that the related coefficient is too large, and the related coefficient must be set or adjusted differently as other conditions such as motor, dehydration pattern, and the like are changed, so that a complicated process is required. This method has a problem in that, when the model of the waste disposal apparatus is changed, there are many coefficients to be re-adjusted, and the process is also difficult to apply to new products by completing the process.

Further, when the amount of laundry is sensed as described above, the accuracy is low, and even if the laundry drum is an empty drum in which no laundry is accidentally inserted by the user, a laundry course is set, and when the operation command is input, Washing, rinsing, and dewatering operations. Accordingly, there is a problem that the laundry is unnecessarily operated despite the absence of laundry in the drum.

Further, when the laundry is caught in the gap, the laundry processing device may be damaged due to an increased degree of wear of the laundry, which may affect the rotation of the motor and lead to damage to the motor.

In addition, when installing the laundry processing apparatus, the height of the legs of the laundry processing apparatus is adjusted in consideration of the condition of the bottom of the laundry processing apparatus. However, when the laundry processing apparatus operates, large and small vibrations are generated in the laundry processing apparatus. Therefore, when a long time elapses, the laundry processing apparatus is gradually moved and the screws of the legs are worn. . When the balance of the laundry processing apparatus is not balanced, the vibration of the laundry processing apparatus is increased, the noise is increased, and the laundry processing apparatus is also damaged during high-speed rotation.

Accordingly, there is a demand for a method of measuring the amount of the laundry more easily and accurately, and checking the condition of the laundry and the condition of the laundry processing apparatus.

The object of the present invention is to provide a laundry processing device and a control method thereof for detecting a state of laundry in a drum or a balance state of a laundry processing device using a current value of a motor sensed during a drum rotation operation of a laundry processing device.

According to another aspect of the present invention, there is provided a method of controlling a laundry processing apparatus, the method comprising: rotating a drum to which laundry is charged, Stopping the motor when the speed of the drum reaches a predetermined rotational speed; Measuring a current value of the motor while the drum is rotating; Detecting a state of the drum according to the presence or absence of the laundry in the drum corresponding to the current value; And outputting a notification indicating that the vehicle is in a disabled state if the detection result is in a disabled state.

According to another aspect of the present invention, there is provided a method of controlling a laundry processing apparatus, the method comprising: rotating a drum to which laundry is charged, Stopping the motor when the speed of the drum reaches a predetermined rotational speed; Measuring a current value of the motor while the drum is rotating; Detecting whether the laundry is pinched corresponding to the current value; And outputting a guide according to the insertion of the laundry when the detection of the insertion of the laundry is detected as a result of the detection.

According to another aspect of the present invention, there is provided a control method for a laundry processing apparatus, comprising: increasing a rotational speed of a motor connected to a drum to a maximum rotational speed when a test mode is set; Measuring a current value of the motor during a period in which the rotation speed is increased or maintained; And comparing the measured current value with a reference current to sense a balance state and displaying a balance or an imbalance.

According to an aspect of the present invention, there is provided a laundry processing apparatus comprising: a drum rotated by a motor and rotated by a laundry; A current sensing unit that senses a current flowing through the motor during a certain period of the rotation angle while the drum rotates at a predetermined rotation angle; Controlling the motor so as to rotate the drum, and controlling the amount of the laundry, the insertion of the laundry, the presence or absence of the drum, and the installation of the drum in response to the current measured by the current sensing unit during the rotation of the drum And a balance state according to the detected state; And a display unit for displaying the detection result.

According to the present invention, the state of the laundry can be detected quickly and accurately by using the current value of the motor measured during the rotation of the drum of the laundry processing apparatus. When it is determined that the laundry is empty, It is possible to change the operation setting so that the operation can be completed within a short period of time by considering the user as a very small amount depending on the case. Therefore, unnecessary operation is minimized, energy is saved, and convenience for the user is greatly improved. Further, it is possible to minimize the wear of the laundry and to prevent the malfunction of the laundry processing apparatus by detecting and indicating that the laundry is trapped in the laundry processing apparatus or the laundry processing apparatus is unbalanced by using the current value of the motor, Of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a perspective view illustrating a laundry processing apparatus according to an embodiment of the present invention.

1, the laundry processing apparatus 100 includes a cabinet 110 forming an outer appearance of the laundry processing apparatus 100, a tub 110 disposed in the cabinet 110 and supported by the cabinet 110, A motor 130 for driving the drum 122 and a drum 130 disposed outside the cabinet body 111 and disposed inside the cabinet 110. The drum 120 is disposed inside the cabinet 110, (Not shown) for supplying wash water, and a drain (not shown) formed below the tub 120 for discharging wash water to the outside.

The drum 122 is provided with a plurality of through holes 122A through which wash water is passed. The drum 122 is lifted up to a certain height during rotation of the drum 122, (124) may be disposed.

The cabinet 110 includes a cabinet body 111 and a cabinet cover 112 disposed on the front surface of the cabinet body 111 and coupled to the cabinet body 111. The cabinet 110 is disposed above the cabinet cover 112, And a top plate 116 disposed on the control panel 115 and coupled to the cabinet main body 111. The cabinet main body 111 includes a top plate 116,

The cabinet cover 112 includes a pouch-in / out hole 114 formed to allow the pouch to enter and exit and a door 113 pivotally movable from side to side so that the pouch-in / pouch hole 114 can be opened and closed.

The control panel 115 includes operation keys 117 for operating the laundry processing apparatus 100 and a display unit 118 for displaying the operation state of the laundry processing apparatus 100, ).

The operation keys 117 and the display unit 118 in the control panel 115 are electrically connected to a control unit (not shown), and a control unit (not shown) electrically controls each component of the laundry processing apparatus 100 . The operation of the control unit (not shown) will be described later.

FIG. 2 is an internal block diagram of the clothes washing machine of FIG. 1. FIG.

2, the laundry processing apparatus includes an operation key 117, a display unit 118, a drum 122, a motor 130, a current sensing unit 220, And a control unit 210 for controlling the first half.

At this time, in addition to the current sensing unit 220, the laundry processing apparatus includes at least one sensing unit that senses temperature, pressure, voltage, current, water level, and rotation speed, and applies data sensed or measured to the control unit 210 . For example, it is possible to measure the water level at the time of water supply or drainage in the laundry processing apparatus, and measure the temperature of the water supplied, the rotation speed of the washing tub or the drum, and the like. In addition, the laundry processing apparatus further includes a memory for storing data, a water supply unit for controlling water supply and drainage, and a drainage unit, but a description thereof will be omitted in the following.

The operation keys 117 are arranged on the control panel as described above, and are operated by a user to input predetermined signals or data to the control unit 210. [ At this time, the operation key 117 includes at least one input means, and may be a button, a dome switch, a touch pad (static / static), a jog wheel, a jog switch, a finger mouse, a rotary switch, And can be applied to any device that generates predetermined input data by an operation such as pressing, rotating, pressure, contact, or the like. The operation keys 117 may be configured to apply a signal different from that in one operation to the controller 210 according to the number of consecutive operations and the operation time so that the laundry processing apparatus can perform a specified operation.

In response to the control command of the control unit 210, the display unit 118 displays information input by the operation keys 117, information on the operation being performed by the laundry processing apparatus, and information upon completion of the operation on the screen. Also, an error relating to a malfunction when the appliance malfunctions is displayed. In this case, the laundry processing apparatus may further include output means such as a lamp or a vibrating element to be turned on or off in addition to the display unit 118, and a description thereof will be omitted in the following.

The control unit 210 receives an operation signal from the operation key 117 and performs an operation. In response to the washing course and the operation setting selected by the operation keys 117, the control unit 210 controls the motor and controls water supply and drainage to perform the main washing, rinsing and dewatering.

The control unit 210 displays the operation state of the laundry processing apparatus 100 through the display unit 118 and displays information on the washing course and the operation setting inputted through the operation key 117 as described above. For example, the progress of the operations such as washing, rinsing, and dewatering can be displayed using at least one of letters, numbers, special characters, emoticons, and images.

Here, the control unit 210 controls the motor 130 for the main washing, rinsing, and dewatering steps by using an inverter. For example, the control unit 210 applies a PWM (Pulse Width Modulation) switching control signal to the inverter as shown in FIG. 3, which will be described later, and the inverter performs a high- (130).

The motor 130 operates as an AC power source supplied from the inverter and the drum 122 connected to the motor 130 rotates as the motor 130 rotates.

The drum 122 is disposed inside the tub 120 as shown in FIG. 1, and laundry is inserted and operated by rotation of the motor 130. As the drum 122 is rotated by the motor 130, the laundry charged into the drum 122 is washed, rinsed, and dehydrated to remove contaminants.

The current sensing unit 220 senses the current flowing through the motor 130, that is, the output current io. The current sensing unit 220 may include various sensors such as a hall sensor, an encoder, and the like. The current sensing unit 220 periodically senses a current io flowing through the motor 130 and inputs the sensed current io to the controller 210. [

The control unit 210 senses the amount of laundry based on the current io sensed by the current sensing unit 220.

The laundry processing apparatus may further include an eccentricity detecting unit (not shown) for detecting the bias (eccentricity) of laundry laid on the drum 122, that is, the unbalance (UB) of the drum 122. The eccentricity sensing unit can perform unbalance sensing based on the amount of change in the rotational speed of the drum 122, that is, the amount of change in the rotational speed of the motor 130. [ For this purpose, a speed sensing unit (not shown) for sensing the rotation speed of the motor 130 may be separately provided or may be provided based on the output current value io of the motor 130 sensed by the current sensing unit 220 And the eccentricity can be detected based on the calculated rotation speed. The eccentricity sensing unit may be provided in the control unit 210.

When the controller 210 detects the amount of laundry, the control unit 210 outputs a guide to the unloading of the laundry through the display unit 118 when it is determined that the laundry is not inserted into the drum and is empty.

At this time, the control unit 210 changes the setting after detecting the empty state in response to the user command inputted through the operation key 117, so that the control unit 210 operates. For example, when the operation progress command is inputted after the guidance of the no laundry introduction, or when the user command for the predetermined time guidance is not input, it is determined that the laundry is very small and the water level or the like corresponding thereto is reset, The operation of the next step is performed or the operation is performed for a time shorter than the preset time so that the washing time is shortened.

On the other hand, the controller 310 senses the amount of the laundry when the laundry is caught in the door or some gap, and outputs the guide through the display unit 118.

When the test mode is set by the input of the operation key 117, the control unit 310 controls the operation so that the motor is rotated and stopped. By using the current value of the motor sensed through the current sensing unit 220, The balance state of the laundry processing apparatus is determined. The control unit 310 outputs the determined balance state through the display unit 118.

3 is an internal block diagram of the control unit of FIG.

The controller 210 includes a speed calculator 305, a current command generator 310, a voltage command generator 320, and a switching control signal output unit 330, as shown in FIG.

The speed calculating section 305 calculates the rotor speed v of the motor 130 based on the detected output current io. The speed calculating section 305 can calculate the position of the rotor in addition to the speed of the rotor.

The current command generation unit 310 generates the current command values i * d and i * q based on the operation speed v and the speed command value v *. That is, the current command generation section 310 includes a PI controller (not shown) for generating a current command value i * d, i * q based on the estimated speed v and a speed command value v * * d, i * q) may be set so that they do not exceed a predetermined value, respectively.

The voltage command generation section 320 generates voltage command values v * d and v * q based on the current command values i * d and i * q and the detected current io. That is, the voltage command generation section 420 includes a PI controller (not shown) that generates voltage command values v * d and v * q based on the current command values i * d and i * And a voltage command restricting unit (not shown) for restricting the level so that the voltage command values v * d and v * q do not exceed the predetermined values, respectively.

The switching control signal output section 330 generates a switching control signal Sic for the inverter, which is a PWM signal, based on the voltage command values v * d and v * q, and outputs it to an inverter (not shown).

By the inverter switching control signal Sic, the motor 130 operates in accordance with the speed command value v *. The speed command value v * may be, for example, 50 rpm in order to perform the laundry amount detection based on the current value of the motor 130 while rotating the motor 130 to a predetermined angle.

The current value of the motor 130 is preferably the output current io of the motor 130 sensed by the current sensing unit 220. The present invention is not limited thereto and the current command value i * d, i * q ). The output current io of the motor 130 flows following the current command values i * d and i * q so that the laundry amount detection can be performed based on the current command values i * d and i * q have.

FIG. 4 is a graph showing a change in a current value measured according to the state of laundry in the laundry processing apparatus of FIG. 1;

When washing, rinsing, dewatering and drying are performed in the laundry processing apparatus, the amount of laundry can be detected before dewatering, before the dewatering stroke, and before the drying stroke when dewatering before or during the washing stroke. At this time, the controller 210 may determine whether the drum is in a busy state.

In the following, the values of x-axis in FIGS. 4A to 4C indicate the weight (kg) of the laundry in the range of 0 to 12, the type of the laundry after 13, 13 in the baby clothes, 14 in the jeans, 18 and 19 represent spring autumn or winter bar, and 20 represents towel material. At this time, x value 0 means an empty drum in which laundry is not supplied.

FIG. 4 (a) is a graph showing the measured values of the amount of laundries detected before, during, and after the washing of laundry.

As shown in the figure, the amount of laundry to be sensed increases as the weight of the laundry in the dry state increases in units of 1 kg. In this case, since the amount of laundry is measured by using the current value of the motor, a constant value is measured even in the case of an empty drum having no laundry having a weight of 0, and this value is set as a reference value for detecting the in- have.

That is, in the laundry processing apparatus, the amount of laundry is measured as described above. In this case, when the value corresponding to the weight 0 of the laundry is calculated as described above, the controller 210 determines that the drum is an empty drum Can be detected.

In addition, since the amount of laundry to be measured differs depending on the type of laundry, the controller 210 performs an operation of detecting the amount of laundry in the laundry processing apparatus, so that the controller 210 determines the type of laundry can do.

FIG. 4 (b) shows the amount of laundry before dewatering, which is a result of the amount of laundry detected while the laundry is wet. As shown in FIG. 4 (b), as the weight of the laundry increases, the amount of laundry to be sensed also increases proportionally. At this time, the controller 210 may determine whether the drum is empty drum by using a value measured in the case of an empty drum without laundry in the drum.

Fig. 4 (b) is for the laundry in a wet state before dewatering, so that the detected value is larger than that of Fig. 4 (a).

Particularly, in the case of baby clothes, jeans, towel, and jumper, the difference between the values detected in the dry state is larger than the values detected in the dry state, so that the types of laundry can be more easily distinguished. In case of towel, since it absorbs a lot of water, the wet state is detected as a larger value than the dry state, and it is detected that the value is larger than the towel in the jumper.

At this time, when the detection result of the laundry in the dry state is compared with the detection result of the laundry in the wet state, the type of the laundry can be determined in more detail.

FIG. 4C is a result of detecting the amount of laundry for the wet laundry before the drying cycle is performed after the completion of the dehydration.

At this time, since the dehydration of the laundry is completed but it is wet, the sensed value of the laundry is higher than that of the dry laundry, and the sensed value of the laundry is lower than that of the laundry before the dehydration.

When the drum is empty, the control unit 210 determines whether the drum is empty before the drying process, using the result of the detection of the amount of laundry in the dehydrated wet laundry.

As described above, the detection of whether or not the laundry is worn can be performed by operating the operation key 117 even when the laundry processing apparatus is not in operation, not in a period for detecting the amount of laundry.

FIG. 5 is a flowchart illustrating a method for detecting the amount of laundry in the laundry processing apparatus of FIG. 1 and determining the state of laundry loading.

5, the operation settings such as the washing course and the water temperature are input (S480). When the operation key or the operation key is operated to input an operation command (S490), the control unit 210 sets the inputted operation setting The washing, rinsing, dehydrating and drying operations are started.

At this time, the controller 210 controls the motor 130 to operate the drum at a predetermined rotation angle, and after stopping the drum 130, the controller 210 controls the drum 130 using the current value of the motor 130 input through the current sensing unit 220, And detects the amount of laundry loaded in the washing tub 122 (S500). At this time, align the motor position to the initial position when the motor stops.

At this time, the controller 210 determines whether or not the laundry is charged in the drum corresponding to the calculated amount of laundry as a result of detecting the amount of the laundry, and determines whether the laundry is empty or empty. At this time, the controller 210 compares the detected amount of the laundry with the reference value of the in-vaunted state to determine the in-vaunting state. The reference value for the in vain can vary depending on the state of the laundry, that is, whether it is dry or wet .

If it is determined that the laundry is not poured into the drum 122 at step S510, the control unit displays a guide indicating that the laundry is not supplied because the laundry is not poured through the display unit 118 at step S520. At this time, the output guide may be displayed in the form of at least one of letters, numbers, special symbols, emoticons, and images, and a warning sound or a warning light may be output.

In addition, the controller 210 displays a guide on whether or not to continue the set operation according to the detection of the beacon through the display unit 118 (S530).

At this time, if the set operation is inputted to continue, the amount of laundry is set to a very small amount (S550), and the washing time is recalculated and displayed (S560). Further, the eccentricity is sensed (S570), and the normal operation is performed according to the inputted operation setting (S580).

At this time, it is possible to set whether to stop the operation or ignore the operation at the time of detection of the incidents, and to automatically perform the next operation upon detection of the incidents. The user is prompted to display the guidance for the detection of the bins. Also, it is possible to set not to perform the detection of the beeping.

On the other hand, if not input, the control unit 210 stops the operation of the washing machine (S600).

If a certain amount of laundry is detected, the amount of laundry is determined according to the amount of the laundry, and the washing time is calculated and displayed (S590). At this time, the amount of laundry can be displayed on the display unit 118. At the time of dewatering, dehydration is normally performed as described above.

6 to 8 are flow charts showing an embodiment of a dewatering method at the time of detection of a bail in the laundry processing apparatus of Fig. The present invention also relates to a method of dewatering a laundry processing apparatus in a case where the operation continues even after a lane is detected.

As shown in FIG. 6, the laundry processing apparatus can determine whether the laundry is not worn in the drum by using the current value of the motor measured while the drum rotates. At this time, the motor is controlled in the same way as the amount of laundry is measured, and the current value of the motor during the operation of the motor is used.

The amount of laundry is increased by increasing the rotational speed of the motor up to a predetermined rotational speed and thereafter repeating the operation of decelerating or stopping the speed without maintaining the speed a predetermined number of times, The current value can be measured and detected.

When detecting the amount of laundry, the motor rotates the drum within one rotation, and measures the current value of the motor in the current sensing part 220 during the rotation of the drum or a part of the drum rotation. For example, the drum may stop after rotating to 90 degrees, stop after rotating to 180 degrees, and stop after one rotation.

The current sensing unit 220 measures the current value of the motor while the drum rotates up to 90 degrees and applies the current to the control unit 210. The current sensing unit 220 measures the current value of the motor by 90 to 180 degrees The current value of the motor can be measured with respect to the interval, and the current value of the motor can be measured with respect to the interval of 0 to 180 degrees in some cases. That is, the current sensing unit 220 may measure the current value of the motor continuously while the drum is rotating, but may also measure the current value of the motor during a part of the rotation of the drum.

In operation S610, the control unit 210 sets the amount of the laundry to a very small amount (S620) when the laundry is not inserted into the drum and the drum is empty.

After the amount of laundry is detected, the controller 210 controls the motor 130 to increase the rotation speed to the second rotation speed, maintains the rotation speed at the second rotation speed for a predetermined time, (S630).

At this time, the controller 210 senses the eccentricity while maintaining the second rotation speed, increases the rotation speed of the motor from the second rotation speed to the maximum rotation speed without stopping the motor, (S640).

In the case of not a hollow cylinder, it is preferable to perform the eccentricity sensing two to three times. In some cases, it may be performed more than four times.

As a result, unnecessary operation is reduced and the washing time is greatly reduced.

7 is another example according to the dewatering method at the time of detecting the incontinence.

As shown in FIG. 7, when it is determined that the amount of laundry is detected as a result of the detection of the amount of laundry (S650), the controller 210 sets the amount of laundry to a very small amount (S660). At this time, the guidance according to the detection of the beep is outputted.

The control unit 210 drives the motor 130 to increase the rotational speed to the second rotational speed A and maintain the second rotational speed for a predetermined time when the second rotational speed A is reached. At this time, the eccentricity sensing unit senses the eccentricity first (S670).

When the eccentricity is detected once, the controller 210 increases the rotational speed of the motor to the third rotational speed B and maintains the third rotational speed to perform the first dehydration (S680).

Further, after the primary dehydration for a predetermined time, the rotational speed of the motor 130 is increased to the maximum rotational speed and the secondary dehydration is performed (S690). At this time, the water penetrated into the wet laundry is discharged by the centrifugal force of the drum and is dehydrated.

The number of times of eccentricity detection is reduced when the bellows are detected, but the bellows is partially dewatered at the third rotational speed by gradually increasing the rotational speed. Second dehydration progresses at the maximum rotational speed, thereby improving the stability at high- .

8 is another example according to the dehydration method at the time of detection of the vat.

As shown in FIG. 8, if it is determined that the laundry is empty (S700), the controller 210 sets the amount of laundry to a very small amount (S710). At this time, the guidance according to the detection of the beep is outputted.

The control unit 210 drives the motor 130 to increase the rotational speed to the second rotational speed A and maintain the second rotational speed for a predetermined time when the second rotational speed A is reached. At this time, the eccentricity sensing unit senses the eccentricity first (S720).

When the eccentricity is detected once, the controller 210 ends the eccentricity sensing, increases the rotational speed of the motor from the second rotational speed to the third rotational speed B, and then maintains the third rotational speed for a predetermined time, Dehydration is performed (S730).

The control unit 210 repeats the process of increasing and decreasing the rotational speed of the motor 130 after the first dehydration for a predetermined time and then increasing the rotational speed to the maximum rotational speed, And the secondary spin-drying is performed by maintaining the maximum rotation speed for a predetermined time (S740).

Accordingly, the washing time is reduced with respect to the operation to be performed at the time of detection of a vacant lot, and the safety against high-speed rotation is improved, thereby preventing damage to the laundry processing apparatus.

Fig. 9 is a diagram showing a change in the rotational speed in the dewatering method at the time of detection of the vat. FIG. 9 (a) is a view showing a change in the rotation speed according to the dewatering method in FIG. 6, and FIG. 9 (b) is a view showing a change in the rotation speed according to the dewatering method in FIG. FIG. 9C is a view showing a change in the rotational speed according to the dewatering method at the time of detecting the bouncing state of FIG.

As shown in FIG. 9A, at the time of dewatering, the motor 130 increases the speed to the first rotational speed (611) during a period of detecting the amount of laundry, and then stops. The motor 130 repeats the rotation and stop of the motor a predetermined number of times as described above. At this time, the motor 130 does not maintain the first rotation speed after the speed increases to the first rotation speed and stops the operation immediately.

At this time, as the motor 130 is operated, the drum 122 rotates, and while the drum rotates, the current sensing unit 220 measures the current value of the motor and applies the measured current to the controller 210. The control unit 210 calculates the amount of laundry according to the current value input from the current sensing unit 220. At this time, when the amount of the laundry is less than a predetermined reference value, it is determined that there is no laundry laid in the drum and the laundry is empty. The controller 210 may output a notification informing that the laundry is in a state of being charged or in a vacant state.

In the idle state, the motor 130 increases the speed from the stop state to the second rotation speed A in response to the control command of the controller 210, and maintains the speed for a predetermined time (612). At this time, the eccentricity is detected by the eccentricity sensing unit once.

After the eccentricity is detected once, the motor 130 is not stopped, and the dehydration is performed by increasing the rotational speed from the second rotational speed A to the maximum rotational speed C set and maintaining the maximum rotational speed for a predetermined time (step 613) .

Referring to FIG. 9B, in step S651, the motor 130 increases the speed to the first rotation speed and repeats the operation of stopping the rotation of the motor 130 a predetermined number of times. At this time, the current sensing unit 220 measures the current value of the motor and applies it to the controller 210. The controller senses the amount of the laundry according to the current value.

The motor 130 increases the speed from the stopped state to the second rotational speed A and the second rotational speed A is maintained for a predetermined time corresponding to the control command of the controller 210 (652). At this time, eccentricity is detected once.

The motor 130 increases the speed from the second rotation speed to the third rotation speed B and maintains the third rotation speed B for a predetermined time and then increases the speed to the maximum rotation speed C, And then the operation is stopped (653). At this time, dehydration of laundry is performed.

In FIG. 9C, the motor 130 performs an operation for detecting the amount of laundry as described above (711), increases the speed to the second rotation speed A, and then maintains the speed (712). At this time, the eccentricity is detected once.

The motor 130 increases the speed from the second rotation speed A to the third rotation speed B, holds it for a predetermined time, increases the speed again, holds the same, When the speed reaches the maximum rotation speed (C), the operation is stopped after a predetermined time (713). The speed increases stepwise up to the maximum rotational speed, and dehydration is performed in this process.

Accordingly, when detecting a vacant position, the motor is controlled at a maximum rotation speed immediately after sensing the eccentricity once, and the drum is rotated so that unnecessary operations according to the vacant position are partially omitted, thereby shortening the washing time.

FIG. 10 is a view showing an example of a laundry pucking phenomenon in the laundry treating apparatus of FIG. 1, and FIG. 11 is a view showing a result of detecting the amount of laundry when the laundry puckering phenomenon occurs as shown in FIG.

As shown in FIG. 10, during the washing process of the laundry processing apparatus, a part of the laundry in the drum enters the clearance between the doors, and an impression image is generated.

In this case, the rotation of the drum is disturbed by the insertion of the laundry, which affects the balance during high-speed rotation as well as the wear of the laundry is increased and the wear of the door portion is caused.

The laundry processing apparatus senses the presence of such laundry in the process of detecting the amount of laundry.

At this time, the controller 210 controls the motor 130 to detect the amount of the laundry, and detects the amount of the laundry using the current value of the motor measured through the current sensor 220. Detection. When the laundry is pinched, the frictional force of the laundry is increased, which affects the rotation of the drum, so that it can be detected by using a change in the current value of the motor.

The control unit 210 controls the motor to rotate the motor at a predetermined rotation angle, when the detected current value of the motor is equal to or greater than a constant current value, or when the sensed value difference between the first rotation and the second rotation is large, It is judged that the laundry is caught in the case where the deviation of the current value is large. In this case, the control unit 210 repeats the rotation and stopping operations of the motor several times to precisely detect the insertion of the laundry, thereby distinguishing the case where the amount of laundry is large and the laundry.

As shown in FIG. 11, the controller 210 increases the current value measured as the weight of the laundry increases, so that the amount of the laundry is detected using the increased current value.

At this time, when the laundry is stuck, as shown in P2, a phenomenon that the amount of laundry is detected to be higher than that in a general case occurs.

For example, when 8 kg of laundry is placed in the laundry processing apparatus, the value according to the amount of the laundry generally calculated is about 160 to 170, while the value of 210 to 230 is calculated when the laundry is pinched. This corresponds to the case of detecting the amount of laundry of 12 kg or 13 kg.

The control unit 210 repeats the operation of rotating and stopping the motor more frequently than the case of detecting the amount of the laundry in order to distinguish between the case where the amount of the laundry is large or extremely large and the case where the laundry is caught.

When the sensed values 160 to 170 and 210 to 230 for 8 kg are respectively calculated using the current value measured through the current sensing unit 220, it is determined that the laundry is caught. Also, when the values of 210 to 230 are consistently calculated, it is judged to be extremely large.

FIG. 12 is a flowchart showing an operation method when laundry is caught in the laundry processing apparatus of FIG. 1. FIG.

As shown in FIG. 12, the laundry processing apparatus senses the amount of laundry before the laundry is started, or before the laundry is dewatered in each of the strokes, or during the dewatering cycle (S750).

The amount of laundry can be calculated by measuring the current value of the motor while the drum is rotating by repeating the process of rotating the motor at a predetermined rotation angle and stopping the operation a predetermined number of times.

At this time, the controller 210 detects the amount of the laundry by using the change of the current value in the process of detecting the amount of the laundry using the measured current value.

If the insertion of the laundry is detected (S760), the controller 210 displays a guide on the display unit 118 to request the status check of the laundry according to the detection of the insertion of the laundry (S770).

At this time, the laundry can be reintroduced. In this case, the user can open the door to sort out the laundry, thereby eliminating the burden on the laundry. Even if laundry is not added, it is called re-input for convenience.

When the laundry is re-introduced (S780), the amount of the laundry is detected again (S750), and whether or not the laundry is inserted is detected. If the insertion of the laundry is detected (S760) ).

If the laundry is pinched by the reintroduction of the laundry (S760), the normal operation is performed (830).

If the laundry is not reinserted after the guidance output according to the laundry is inserted, the water supply is performed (S790), and the laundry 130 is rotated in the left and right directions by controlling the motor 130 (S800).

After draining, the amount of laundry is re-sensed (S810), and if it is in a normal state, normal operation is performed (S830).

On the other hand, if the laundry is not removed and is sensed again, the insertion of the laundry and the corresponding status confirmation request are displayed again (S770). At this time, the controller 210 can stop the operation and display an error if the insertion of the laundry is detected more than the reference number of times.

FIG. 13 is a view showing a change in the rotation speed of the motor according to the balance state detection of the laundry processing apparatus of FIG. 1, and FIG. 14 is a diagram illustrating a balance state detection method of the laundry processing apparatus using the change in rotation speed of the motor in FIG. .

When installing the laundry processing equipment, balance the balance by adjusting the height of the laundry processing equipment considering the condition of the floor. However, when the laundry processing apparatus operates, large and small vibrations are generated in the laundry processing apparatus, so that the laundry processing apparatus gradually moves after a long time. If the floor condition is not uniform, a balance may not be obtained due to the movement of the laundry processing equipment. In addition, the legs of the laundry processing apparatus are worn out due to long use, and the balance may not be balanced.

The laundry processing apparatus senses the current value of the motor while the drum is rotated by rotating the drum, and detects the unbalance of the laundry processing apparatus.

When a balanced feeling keeping key or a plurality of keys are simultaneously operated among a plurality of operation keys 117, it is recognized as a balanced feeling and a signal is applied to the control unit 210 to start a test mode.

The control unit 210 starts the test mode in response to the input signal and controls the motor 130 to rotate and controls the balancing state of the laundry processing apparatus using the current value of the motor measured through the current sensing unit 220 It is detected whether or not it is a cognitive imbalance state.

The control unit 210 outputs the detection result of the balance state of the product through the display unit 118. [ At this time, in case of an unbalance, the degree of the unbalance corresponding to the magnitude of the measured current value can be divided and displayed in a predetermined step.

As shown in FIG. 13, when the test mode is input, the controller 210 controls the rotational speed of the motor to increase stepwise.

In response to the control command of the controller 210, the motor 130 increases the rotation speed in the stop state to maintain the constant speed at the eleventh rotation speed E and then increases to the twelfth rotation speed F Maintain a certain time. Further, the motor 130 increases the speed at the thirteenth rotational speed G and then maintains the speed at the 14th rotational speed H after a certain period of time. The twelve to fourteen rotational speeds are set at about 800 rpm to about 1,300 rpm, which corresponds to the rotational speed at the time of dewatering.

At this time, the current sensing unit 220 outputs the currents Q1 and Q3 in which the speed of the motor 130 is maintained and the periods Q2 and Q4 in which the speed of the motor is increased in response to the control command of the controller 210 And measures the current values of the motors and applies them to the control unit 210. [ At this time, the motor current value is not measured at the low rotational speeds (D, E).

If the laundry processing apparatus is installed in an unbalanced state, it affects the high-speed rotation, so that the current value is measured higher than in a general balanced state. Accordingly, the controller 210 compares the current value corresponding to each rotation speed with the measured current value to determine the balance state of the laundry processing apparatus.

The control unit 210 divides the detected balance state into three to five levels and displays the balanced state on the display unit 118.

14, when the test mode is inputted by the operation key 117 (840), the control unit 210 controls the motor 130 that has been stopped to operate so that the rotation speed is increased and maintained Thereafter, the rotation speed is increased again and maintained for a predetermined time so that the rotation speed is increased stepwise (S850).

At this time, when the rotational speed of the motor increases, the current sensing unit 220 measures the current value of the motor (S850). At this time, the current sensing unit 220 measures a current value in a section where the rotational speed of the motor increases and in a section where the rotational speed of the motor increases.

The control unit 210 compares the current measured by the current sensing unit 220 with the reference current in step S870. If the measured current is equal to or less than the reference current, the controller 210 determines whether the rotational speed of the motor is the maximum speed (S900) The rotational speed of the motor is increased and maintained again.

At this time, the current sensing unit 220 measures the current value of the motor in the section where the rotation speed is increased and maintained, and applies the measured current value to the controller 210. The controller 210 compares the measured current with the reference current S870). The control unit 210 repeats the above process until the rotational speed of the motor 130 is gradually increased and maintained until it reaches the maximum speed.

If the measured current is equal to or lower than the reference current even after reaching the maximum speed, it is determined that the laundry processing apparatus is in a balanced state and is displayed on the display unit 118 as being normal.

On the other hand, when the measured current exceeds the reference current as a result of the comparison between the measured current and the reference current, the controller 210 terminates the test for the balance state of the laundry processing apparatus (S880) Lt; / RTI > At this time, the control unit 210 can display the degree of unbalance by dividing the degree of unbalance into predetermined steps. At this time, the degree of imbalance can be judged according to the degree of the excess.

Fig. 15 is an example in which guidance on the balanced state in Fig. 14 is displayed on the display unit 118. Fig.

When the laundry processing apparatus is in a balanced state, it is displayed as shown in FIG. 15A. When the laundry processing apparatus is in an unbalanced state, the degree of the unbalance can be displayed as shown in FIG. 15B or FIG.

At this time, FIG. 15B shows a state in which the washing machine can normally operate although slight imbalance is detected. On the other hand, in the case of FIG. 15C, it indicates that there is a possibility that the laundry processing apparatus may malfunction or be damaged if the imbalance is severe and the repair is not performed.

Here, the user can confirm the displayed balance state and request the service.

Accordingly, the laundry processing apparatus and the operation method of the present invention can measure the current value of the motor to detect the amount of laundry, and can detect the state of the laundry according to whether the laundry is loaded in the drum or not, . In addition, the balance state according to the installation of the laundry processing apparatus can be sensed and displayed.

Accordingly, it is an object of the present invention to provide a washing machine, a washing machine, a washing machine, a washing machine, a washing machine, a washing machine, . In addition, unnecessary operation is minimized when detecting a vacant lot, so that energy can be saved and time can be shortened, the wear of the laundry can be sensed, wear of the laundry can be prevented, and wear of the laundry processing apparatus can be minimized. In addition, it is possible to prevent the malfunction of the laundry processing apparatus due to the unbalance of the laundry processing apparatus, to prevent the damage of the laundry processing apparatus, and to improve the safety of the laundry processing apparatus.

Meanwhile, the control method of the laundry processing apparatus of the present invention can be implemented as a code that can be read by a processor on a processor-readable recording medium provided in the laundry processing apparatus. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium readable by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also a carrier wave such as transmission over the Internet. In addition, the processor readable recording medium may be distributed over networked computer systems so that code readable by the processor in a distributed manner can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

1 is a perspective view illustrating a laundry processing apparatus according to an embodiment of the present invention.

FIG. 2 is an internal block diagram of the clothes washing machine of FIG. 1. FIG.

3 is an internal block diagram of the control unit of FIG.

FIG. 4 is a view showing a dewatering method of the laundry treatment apparatus of FIG. 1;

FIG. 5 is a flowchart illustrating a method for detecting the amount of laundry in the laundry processing apparatus of FIG. 1 and determining the state of laundry loading.

6 to 8 are flow charts showing an embodiment of a dewatering method at the time of detection of a bail in the laundry processing apparatus of Fig.

Fig. 9 is a diagram showing a change in the rotational speed in the dewatering method at the time of detection of the vat.

FIG. 10 is a view showing an example of the phenomenon of laundering in the laundry processing apparatus of FIG. 1;

FIG. 11 is a view illustrating a result of detecting the amount of laundry when the laundry is pinched as shown in FIG.

FIG. 12 is a flowchart showing an operation method when laundry is caught in the laundry processing apparatus of FIG. 1. FIG.

FIG. 13 is a view showing a change in rotation speed of the motor according to the balanced state detection of the laundry processing apparatus of FIG. 1;

FIG. 14 is a diagram illustrating a balanced state detecting method of a laundry processing apparatus using a change in rotation speed of a motor in FIG.

Fig. 15 is an example in which guidance on the balanced state of Fig. 14 is displayed on the display unit.

DESCRIPTION OF THE REFERENCE NUMERALS

100: laundry processing device 117: operation key

118: display portion 122: drum

130: motor 210:

220: Current sensing unit

Claims (20)

The drum into which the laundry is charged is connected to the motor and rotated at a predetermined rotation speed up to a predetermined rotation angle; Stopping the motor when the motor reaches the rotation angle; Measuring a current value of the motor while the drum is rotating; Sensing an amount of the laundry corresponding to the current value and detecting a state of the drum in accordance with the presence or absence of the laundry in the drum; And outputting a guide indicating that the drum is empty; Outputting a guide on whether or not the operation progresses; And And a step of dehydrating after detecting the eccentricity once when proceeding with the above operation. The method according to claim 1, Wherein the step of detecting the vacant state determines that the drum is empty when the amount of the laundry calculated corresponding to the current value is less than a reference value. The method according to claim 1, Wherein the control unit terminates the operation or continues the operation according to data input in response to the guidance on whether or not the operation progresses. The method according to claim 1, Further comprising the step of dewatering the motor by increasing the rotational speed of the motor to a maximum rotational speed when proceeding with the operation. The method according to claim 1, Further comprising the step of increasing the rotational speed of the motor to first dehydrate and increasing the rotational speed of the motor to a maximum rotational speed to perform second dehydration. The method according to claim 1, Further comprising the step of increasing the rotation speed of the motor and maintaining the rotation speed of the motor for a certain period of time, repeating the operation of increasing the rotating speed of the motor, . The method according to claim 1, Further comprising the step of repeating the step of rotating or detecting the state of the garbage to repeat the predetermined number of times. The drum into which the laundry is charged is connected to the motor and rotated at a predetermined rotation speed up to a predetermined rotation angle; Stopping the motor when the motor reaches the rotation angle; Measuring a current value of the motor while the drum is rotating; Detecting whether the laundry is pinched corresponding to the current value; And And outputting a guide corresponding to the insertion of the laundry when the detection of the insertion of the laundry is detected as a result of the detection, Wherein the controller determines that the laundry is caught if the amount of the laundry calculated based on the current value is equal to or greater than a reference amount or a deviation from the calculated amount of the laundry is large. . delete 9. The method of claim 8, Further comprising the steps of performing the steps of rotating and stopping the laundry when the laundry is caught in the drum, And outputting the guidance information. 9. The method of claim 8, Further comprising the steps of: re-inputting the laundry, re-executing the rotating and stopping steps, and re-detecting the insertion of the laundry when the laundry is caught. 9. The method of claim 8, Further comprising the step of rotating the drum by a predetermined number of times to rotate the laundry after the water supply is performed if the insertion of the laundry is detected. When the test mode is set, incrementing the rotational speed of the motor to which the drum is connected to the maximum rotational speed step by step; Measuring a current value of the motor during a period in which the rotation speed is increased or maintained; And Comparing the measured current value with a reference current to sense a balance state and displaying a balance or imbalance, Wherein the degree of unbalance is divided into a predetermined number of steps and displayed differently according to the degree of exceedance when the current value exceeds the reference current. 14. The method of claim 13, Wherein when the current value is equal to or less than the reference current, the controller determines that the balance state is a balanced state, and when the rotation speed reaches the maximum rotation speed, A method of controlling a processing device. delete 14. The method of claim 13, Wherein the measuring step measures a current value of the motor when the rotational speed is equal to or greater than a minimum rotational speed at the time of dewatering. A drum rotated by a motor and rotated with laundry inserted therein; A current sensing unit that senses a current flowing through the motor during a certain period of the rotation angle while the drum rotates at a predetermined rotation angle; Controlling the motor such that the drum is rotated to the rotation angle at a predetermined rotation speed and controlling the amount of the laundry, the amount of the laundry, the amount of the laundry, A controller for detecting at least one of whether the drum is in a closed state and a balanced state according to installation; And And a display unit for displaying the detection result of the control unit. 18. The method of claim 17, Wherein the control unit determines that the laundry is not in the empty state in the drum when the detected amount of the laundry is less than a reference value and displays a guidance on the empty state on the display unit. 18. The method of claim 17, The control unit determines that the laundry is caught when the detected amount of the laundry is equal to or greater than a reference amount or a deviation from the detected amount of the laundry is large and displays a guide to the laundry on the display unit Wherein the washing machine is a washing machine. 18. The method of claim 17, Wherein the control unit increases the rotation speed of the motor to a maximum rotation speed when the test mode is input, and when the current value measured by the current sensing unit exceeds the reference current, And displays the degree of unbalance on the display unit.

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