KR19980084734A - Dehydration Control Method of Washing Machine - Google Patents

Abstract

Dehydration control method of the washing machine according to the present invention is intermittent dehydration and dehydration between the washing tank (2) and the dehydration tank (3) when the rotation speed of the motor (5) is less than the reference rotational speed of the motor (5) in the predetermined dehydration operation It is determined that the number of revolutions is reduced due to the overloading of the motor 5 by the remaining three removers, and the bubble removing stroke is performed.

Therefore, by dehydration control method of the washing machine according to the present invention by preventing the lowering of the rotational speed of the motor (5) by the three removal products to improve the dehydration performance, and at the same time there is a foam removal administration for removing the three removal products As an example, by performing an additional rinsing, the rinsing property (cleaning) of the laundry can be improved.

Description

Dehydration Control Method of Washing Machine

The present invention relates to a dehydration control method of a washing machine, and more particularly, to a dehydration control method of the washing machine capable of performing bubble removal and dehydration by detecting intermittent dehydration and the presence or absence of bubbles in the washing tank during the main dehydration.

In general, as shown in FIG. 1, a washing machine 2 having a cylindrical shape in which washing water is contained is disposed inside the main body 1, and a dewatering tank 3 in which laundry is contained therein is rotatable. Is mounted. A plurality of through holes 3a are formed in the dehydration tank 3 so as to communicate with the washing tank 2, and a pulsator 4 is rotatably mounted on the lower side thereof. In addition, a motor 5 for forward and reverse rotation of the dehydration tank 3 is mounted on the outer side of the bottom of the washing tank 2, and in the center, the pulsator 4 is brought into the forward and reverse direction by receiving the rotational force of the motor 5 during washing. When rotating at a low speed and dewatering, a clutch mechanism 6 is mounted to receive the rotational force of the motor 5 to rotate the dewatering tank 3 at high speed.

The conventional washing method of the conventional washing machine having such a configuration is largely composed of a washing stroke, up to five rinsing strokes and a dehydrating stroke.

At this time, when the washing stroke is finished, the rinsing stroke is performed. Each process of the rinsing stroke is a drainage process of draining the washing water that has become cloudy after the washing stroke or the previous rinsing stroke, and the dehydrating tank (3) while supplying water to the washing tank (3). ) Intermittent dehydration process to rotate at high speed intermittently, the water supply process to supply the washing tank 2 to a predetermined set water level, and the rinsing process of rinsing the laundry while stirring the pulsator (4) from side to side.

In this way, when all the rinsing cycles of the predetermined number of times are finished, the dehydrating stroke is performed. By the main dehydration process to remove the wash water contained in the laundry. The intermittent dehydration processes described above are processes for correcting the tangled and twisted laundry by the main washing process and each rinsing process.

In the control method of the conventional washing machine, when the intermittent dehydration process and the dehydration process are performed, the motor 5 is driven at a high speed to rotate the dehydration tank 3 forward to remove moisture contained in the laundry. However, at this time, the de-cleaning product generated during the rinsing stroke during the drainage process of intermittent dehydration and dehydration stroke is not completely drained and remains between the washing tank 2 and the dehydration tank 3 to restrain the rotation of the dehydration tank 3. As a result, the RPM of the motor 5 does not reach the reference RPM set to a predetermined value during dehydration, so that the dehydration performance and the rinsing performance due to bubbles are deteriorated.

Accordingly, the present invention is to provide a dehydration control method of the washing machine to be able to detect the bubbles remaining in the washing tank during intermittent dehydration and dehydration administration to remove them by devising to solve such a conventional problem.

1 is a longitudinal sectional view showing a structure of a general washing machine;

2 is a control block diagram showing a configuration of a washing machine according to the present invention;

3 is a flowchart illustrating a control method of a washing machine according to the present invention;

FIG. 4 is a flowchart showing a dehydration control method in the rinsing and dehydrating strokes shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

2: washing tank, 3: dehydration tank,

5: motor, 10: control unit,

20: function selection unit, 30: rotation speed detection unit,

40: water supply valve driver, 41: water supply valve,

50: motor drive part, 70: drain valve drive part.

Dehydration control method of the washing machine according to the present invention for realizing this object is a washing machine having a washing tank containing the wash water, a dehydration tank in which the laundry is contained in the washing tank and a motor for rotating the dehydration tank at high speed during the dehydration administration. In the dehydration control method of the step, detecting the rotational speed of the motor during the dehydration operation, comparing the detected rotational speed of the motor with a predetermined rotation speed set as the reference rotational speed when dehydration, the comparison result the rotational speed of the motor If it is less than the number it is characterized in that it comprises a step of stopping the drive of the motor, performing a rinsing stroke.

In addition, in the dehydration control method of the washing machine according to the present invention, the rinsing operation is a water supply step of supplying the washing water to a predetermined level in the washing tank, the rinsing step of rinsing while stirring the laundry left and right when the water supply is completed, the rinsing step is Ending is characterized in that it comprises a drainage step for draining the water in the washing tank.

Hereinafter, the configuration and the effect according to the preferred embodiment of the present invention will be described in detail. First, Figure 1 is a longitudinal cross-sectional view showing the configuration of a washing machine according to the present invention, Figure 2 is a control block diagram showing the configuration of a washing machine according to the present invention. As shown in FIG. 1, in the washing machine according to the present invention, a cylindrical washing tank 2 in which washing water is contained is disposed inside the main body 1, and a dewatering tank 3 in which laundry is contained is rotated inside the washing machine. Possibly mounted. A plurality of through holes 3a are formed in the dehydration tank 3 so as to communicate with the washing tank 2, and a pulsator 4 is rotatably mounted on the lower side thereof. In addition, a motor 5 for forward and reverse rotation of the dehydration tank 3 is mounted on the outer side of the bottom of the washing tank 2, and in the center, the pulsator 4 is brought into the forward and reverse direction by receiving the rotational force of the motor 5 during washing. When rotating at a low speed and dewatering, a clutch mechanism 6 is mounted to receive the rotational force of the motor 5 to rotate the dewatering tank 3 at high speed. Under the washing tank 2, a drain valve 7 for draining the water in the washing tank 2 is formed, and a drain valve driver 70 (see FIG. 2) for controlling opening and closing of the drain valve 7 is mounted. do.

In addition, as shown in Figure 2, the washing machine according to the present invention, the control unit 10 for controlling the overall operation of the washing stroke, rinsing stroke and dehydration stroke, etc. of the washing machine, and the desired type of stroke and each stroke performed by the user The function selection unit 20 which receives the time, the water supply level, and the like, rotates the pulsator 4 forward and backward at a predetermined time period during the washing stroke or the rinsing stroke, and during the dehydration stroke, rotates the dehydration tank 3 at high speed. A motor 5, a motor driver 50 for forward and reverse rotation of the motor 5 under the control of the controller 10, a rotation speed sensing unit 30 for sensing the rotation speed of the motor 5, and A water supply valve driving unit 40 connected to an external water supply source and controlling the opening and closing of the water supply valve 41 according to the control of the water supply valve 41 and the controller 10 to supply the washing water into the washing tank 2, and a controller Drain valve (7) for draining the water in the washing tank (2) under the control of (10) And a drain valve driving unit 70 for controlling the opening and closing.

On the other hand, the control method of the washing machine according to the present invention consists of a washing stroke (s10), a rinsing stroke (s20, s30, ..., s40) and a dehydration stroke (s50), as shown in the flowchart shown in FIG. .

At this time, the rinsing stroke (s20) is the washing cycle (s10) or the rinsing process (s26) is finished, the drainage process (s21) for draining the turbidity wash water, while supplying the washing tank (2) intermittently high-speed rotation Intermittent dehydration process (s22), the dehydration process (s23) to remove the water contained in the laundry by rotating the washing tank 2 at a high speed before performing the rinsing process (s26) to be described later, the stop process for stopping the washing tank (2) (s24), the water supply process (s25) for supplying water to the washing tank 2 to the set water level and the rinsing process (s26) for rinsing the laundry while stirring the left and right.

In this way, when all the rinsing cycles (s20-s40) of the predetermined number of times are completed, the dehydration stroke (s50) is performed, and the dehydration stroke (s50) again drains the washing water completely (s51), intermittent dehydration as described above. The process (s52) and while rotating the wash water at high speed consists of a main dehydration process (s53) for removing the wash water contained in the laundry by centrifugal force.

In this series of washing machines, the dehydration control method of the washing machine according to the present invention includes the intermittent dehydration process (s22, s52) and the dehydration process (s23, s53) of the rinsing stroke (s20-s40) and the dehydrating stroke (s50). As applied, it is as shown in the flowchart shown in FIG.

That is, in step S70, as shown in the flowchart of FIG. 4, it is determined whether the motor 5 is driven according to whether the intermittent dehydration and dehydration process is started. In step 10, a predetermined control signal is output in step S71 to rotate the motor 5 forward at high speed. Therefore, the start of driving of the motor 5 and the Deutsche dehydration tank 3 are rotated forward at a high speed to dehydrate the laundry. At this time, in step s72, the elapsed time after the motor 5 starts to drive is counted. In step s73, it is determined whether the predetermined time elapses after the motor 5 is driven based on the counted time. To judge. If it is determined in step S73 that the predetermined time has elapsed and the motor 5 is being driven at a predetermined speed or more, then in step S74, the rotation speed detecting unit 30 causes the current drive time of the motor 5 to be driven. The whole thing is detected.

In step S75, the rotation speed of the motor 5 sensed in step S74 is compared with the reference rotation speed preset by the normal rotation speed of the motor 5 at the time of dehydration stroke. As a result of the comparison, when the rotation speed of the motor 5 is less than the reference rotation speed, the detergent foam generated during the rinsing cycle or the washing stroke cannot be drained into the space between the washing tank 2 and the dehydrating tank 3, and thus the dehydrating tank It is determined that the rotation of (3) is restrained. That is, overloading occurs when the motor 5 rotates the dehydration tank 3 due to the detergent foam, and therefore, it is determined that the rotation speed of the motor 5 is lowered below the reference rotation speed.

Therefore, if the current rotation speed of the motor 5 is less than the reference speed as a result of the comparison of the step (s75), the defoaming stroke is performed in step (s80), and the defoaming stroke (s80) is an example of the motor 5. Stop process (S81) to stop the operation of the water supply, the water supply process (s82) to supply the water inside the washing tank (2) to a certain level, the rinsing to rinse the laundry while stirring the pulsator (4) left and right for a predetermined time when the water supply is completed Process (s83), it consists of a drainage process (s84) for draining the wash water is completed rinsing.

When the foam removal stroke (s80) is completed, the process returns to the intermittent dehydration process (s22, s52) and the dehydration process (s23, s53), and the washing tank (2) and the dehydration tank (3) according to the rotational speed detection of the motor (5). The presence of bubbles in between will be judged again.

On the other hand, if the current rotation speed of the motor (5) is greater than the reference speed as a result of the comparison of the step (s75), it is determined that there is no bubble between the washing tank (2) and the dehydration tank (3), the normal dehydration in step (s90) Will perform the administration. That is, in the rinsing operation, the intermittent dehydration or dehydration process is performed, and in the dehydration process, the motor 5 is continuously rotated at high speed for a predetermined dehydration time to remove moisture contained in the laundry.

As described above, the dehydration control method of the washing machine according to the present invention is the motor by the three removal products remaining in the washing tank and the dehydration irradiation when the rotational speed of the motor during intermittent dehydration and dehydration is less than the reference rotational speed of the motor during the predetermined dehydration administration It is determined that the rotational speed is lowered due to the overload, and the foam removal stroke is performed.

Therefore, the dewatering control method of the washing machine according to the present invention improves the dehydration performance by preventing the rotational speed of the motor by the descaling product, and at the same time as an example of the defoaming process for removing the descaling product when the descaling product is present By performing the additional rinsing, the rinsing property (cleaning) of the laundry can also be improved.

Claims (3)

In the dewatering control method of the washing machine having a washing tank containing the washing water, a dehydration tank in which the laundry is contained inside the washing tank and a motor for rotating the dehydration tank at high speed during the dehydration administration, Detecting the rotational speed of the motor during dehydration operation, Comparing the detected rotational speed of the motor with a predetermined rotational speed set as a reference rotational speed when dewatering, And a step of stopping the driving of the motor and performing a rinsing stroke when the rotation speed of the motor is less than the reference rotation speed as a result of the comparison. According to claim 1, The rinsing stroke is a water supply step of supplying the washing water to a predetermined level in the washing tank, Rinse step of rinsing while stirring the laundry left and right when water supply is complete, Dehydration control method of a washing machine comprising a draining step of draining the water in the washing tank when the rinsing step is completed. The method of claim 1, wherein the dehydration stroke is repeatedly performed when the rinsing cycle is ended, and if the rotation speed of the motor is greater than the reference speed during the dehydration stroke, normal dehydration is performed for a set time.