KR20110053735A - Control method of washing machine and washing machine - Google Patents

Abstract

PURPOSE: A washing method and washing machine are provided to reduce noise and vibration in the dehydration entry and to reduce the dehydration entry time. CONSTITUTION: A control unit supplies washing water inside an outer tank and an inner tank(110). The inner tank is equipped within the outer tank. The laundry is accepted within the inner tank. The control unit washes and cleans the laundry through one rotation of a pulsator(100,200). The pulsator is included in the inner tank. The control unit drains the washing water while accelerating the inner tank(330).

Description

Washing method and washing machine {Control method of washing machine and washing machine}

The present invention relates to a washing method and a washing machine, and more particularly, to a washing method and a washing machine having reduced dehydration entry time and reducing noise and vibration when entering dewatering.

In general, a washing machine supplies various detergents such as detergents, bleaches, and fabric softeners and water, and also processes washing, rinsing, and dehydration to remove contaminants on laundry, such as clothes or bedding, by using mechanical rotation. As an apparatus for washing laundry through the laundry, a washing tank in which water, detergents, and laundry are accommodated, and a pulsator forming rotational water flow in the washing tank is rotated by a driving mechanism to wash the laundry.

A clutch is provided for selectively transmitting the rotational force generated by the drive mechanism to the washing tank or the pulsator side to selectively rotate the washing tank and the pulsator.

In a conventional washing machine, after washing or rinsing by rotating a pulsator, the washing tank is rotated at a high speed to enter a dehydration path to dehydrate the laundry, so that the driving force of the driving device being transmitted to the pulsator is transmitted to the inner tank. By operating the clutch, there was a problem that the dehydration entry time was delayed.

In addition, in order to prevent excessive noise and vibration from occurring due to an eccentricity, which means that the laundry is unevenly distributed in the washing tank during rinsing or washing, a variety of laundrys commonly called inflated so that the laundry is uniformly distributed once again after dehydration. The washing tank rotation algorithm of the type was devised, and the overall dehydration time was increased.

An object of the present invention is to provide a washing method and a washing machine for reducing the dehydration entry time, and to reduce the noise and vibration during dewatering entry.

The present invention provides a wash water in the outer tank and the inner tank rotatably provided in the outer tank, the laundry is rinsed or rinsed by rotating any one of the inner tank or a pulsator rotatably provided in the inner tank. The present invention provides a laundry method for dehydrating laundry by draining the washing water while accelerating the inner tank while the inner tank is rotating.

In addition, the present invention is rotatably provided in the outer tank and the outer tank to supply the washing water in the inner container in which the laundry is accommodated, washing or rinsing the laundry by selectively rotating the inner tank or the pulsator rotatably provided in the inner tank And a washing or rinsing stroke terminated while the inner tub is rotated, and a dewatering stroke for draining the washing water while accelerating the rotating inner tub after completion of the dehydration or rinsing stroke.

In addition, the present invention is an outer tank containing the wash water, the inner tank rotatably provided in the outer tank to accommodate the laundry, a pulsator rotatably provided in the inner tank, a pump for draining the wash water in the outer tank, The washing is performed while the inner tub is rotated so that any one of the pulsator and the inner tub is rotated while the washing water is filled in the inner tub to wash or rinse the laundry, and the laundry or rinsed laundry is dehydrated. Or a control unit for terminating the rinsing stroke, controlling the dewatering stroke to be performed by operating a pump to accelerate the inner tank in rotation and drain the laundry water dewatered from the laundry.

The present invention also provides a washing or rinsing stroke and a washing machine in which a dehydration stroke is performed after the washing or rinsing stroke, comprising: an outer tank containing laundry water, an inner tank rotatably provided in the outer tank to accommodate laundry, and an inner tank. A pulsator rotatably provided, and during washing or rinsing stroke, rotates any one of the inner tank or pulsator so that washing or rinsing of the laundry is performed, and the washing or rinsing stroke being performed while the inner bath is rotating. And a control unit for controlling the dewatering stroke to be performed by operating a pump to accelerate the inner tank in rotation and drain the wash water dewatered from the laundry.

The washing method of the present invention has an effect of reducing the dehydration entry time.

In addition, the washing method of the present invention has the effect of reducing the noise and vibration generated during dehydration.

In addition, the washing method of the present invention can reduce the overall washing time including the dehydration time.

Washing machine according to the present invention, it is possible to reduce the dehydration entry time, it is possible to reduce the overall washing time, by reducing the power consumption by eliminating the unnecessary inflation step during the dehydration process.

In addition, the washing machine according to the present invention, by reducing the vibration and noise generated during the dehydration, there is an advantage that can provide a durable and comfortable use environment.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

1 is a side cross-sectional view cut away to reveal the internal structure of the washing machine 1 according to an embodiment of the present invention. FIG. 2 illustrates a coupling relationship between the top cover 12 and the injection unit 27 shown in FIG. 1. 3 is a block diagram showing a control relationship between main components of the washing machine 1 shown in FIG. Figure 4 shows a washing method according to an embodiment of the present invention. 5 and 6 show the compressed water and the alpha-type water flows generated according to the rotational aspect of the inner tub 24 shown in FIG. 1, respectively. Figure 7 shows the operating state of the washing machine main configuration controlled by the washing method according to an embodiment of the present invention. 8 illustrates a display unit 52 applied to the washing machine 1 according to an embodiment of the present invention.

1 to 3, a washing machine 1 according to an embodiment of the present invention includes a cabinet 11 having an upper opening and a laundry access hole 12h coupled to an upper portion of the cabinet 11 and into which laundry is introduced. The formed top cover 12, the door 16 which is fastened to the top cover 12 to rotate and opens and closes the laundry access hole 12h, and is suspended from the top cover 12 by the support member 13, and the support member 13 Vibration generated by the operation of the washing machine 1 is dampened by the damper 14 provided at one end of the crankshaft and fastened to the upper part of the outer tub 22 in which the washing water is accommodated, and the laundry and / or laundry. An outer tub cover 26 having a central portion opened to allow water to pass therethrough, an inner tub 24 rotatably provided in the outer tub 22 to accommodate laundry, and a pulsator 25 rotatably provided in the inner tub 24. ) And a drive unit 30 for applying rotational force to the inner tank 24 and / or the pulsator 15.

The drive unit 30 includes a motor 32 generating a rotational force, a rotation shaft 34 rotated by the motor 32, and a rotation of the motor 32 and / or the pulsator 25 by the rotation shaft 34. And a clutch (not shown) that transmits rotational force.

By operating the clutch, either the inner tub 24 or the pulsator 25 is selectively rotated, or the motor 24 and the pulsator 25 are simultaneously rotated. The clutch is provided in various types in a conventional washing machine, which is not specifically illustrated in the present embodiment, but may be variously implemented by those skilled in the art.

The detergent box 15 containing the laundry detergent additives, such as laundry detergent, rinse fabric softener and / or bleach, is inserted into the detergent box accommodating portion 12a formed on the top cover 12 so as to be pulled out. 61 is connected to an external water source such as a faucet to supply the washing water to the outer tank 22 and the inner tank 24.

On the other hand, the top cover 12 is coupled to the injection nozzle 27 for spraying the wash water into the inner tank (24). The top cover 12 is formed with a jetting nozzle coupling part 12c on which the jetting nozzles 27 are mounted, and the jetting nozzle coupling part 12c has a jetting nozzle coupling hole 12b into which the jetting nozzles 27 are inserted and a jetting nozzle fitting part 12c. A fastening protrusion 12d is formed to cover the nozzle 27 so that the spray nozzle cover 28 for adjusting the spray angle of the spray nozzle 27 is fastened at a set angle.

The water supply unit 60 controls the washing water to flow into the detergent box 15 and / or the injection nozzle 27, thereby supplying the water supply passage 61 and the water supply control valve 62 provided in the water supply passage 61. In this case, the water supply passage 61 and / or the water supply control valve 62 is provided with a plurality of washing by the detergent box 15 and / or injection nozzle 27 by the appropriate control of the water supply control valve (62). Numbers can be distributed. The water supply unit 60 is commonly referred to as a dispenser and may be implemented as a water distribution unit that selectively distributes the wash water to the detergent box 15 and / or the spray nozzle 27, and in addition to this embodiment, it is conventional in the art. Various implementations will be possible by those skilled in the art. According to an embodiment of the present invention, the water supply unit 60 washes the washing water by the detergent box 15 and / or the spray nozzle by appropriate control of the controller 55 according to various operating conditions, such as washing, rinsing, or dehydration. If water supply to 27 is sufficient, the specific structure of the water supply part 60 abbreviate | omits description.

A drain passage 44 for draining the wash water supplied to the outer tank 22 by the water supply unit 50 to the outside, a drain control valve 42 and a drain pump 40 provided on the drain passage 44 are provided. Further provided, a plurality of through holes (24h) are formed in the inner tank 24 so that the wash water can be exchanged between the outer tank 22 and the inner tank (24).

Meanwhile, the top cover 12 includes an input unit 51 for inputting various control commands for overall washing machine operation, and a control unit 50 including a display unit 52 for displaying the washing machine operating state to the outside. Is provided. Referring to FIG. 8, the display unit 52 includes a progress display unit 52a that is implemented by an LCD, an LED, a light emitting diode, or the like, and displays a process in progress in response to an operation stroke of the washing machine 1. As shown, the progress indicator 52a lights up in response to the stroke in which an image indicating washing, rinsing, dehydration and drying, respectively, is currently in progress.

The controller 55 supplies the water supply unit 60, the clutch, the display unit 52, the pump 40, the motor 32, and / or the drain pump according to a control command input through the input unit 51 or by a preset algorithm. Control the operation of 44.

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

The operation process of the washing machine 1 may be largely divided into a washing stroke 100, a rinsing stroke 200, and a dehydrating stroke 300, and a drying stroke may be added in a combined washing machine.

Each of the above strokes may be performed in sequence according to a control command input to the input unit 51, or only the strokes selected by the user may be performed. Hereinafter, the washing stroke 100, the rinsing stroke 200, and the dehydration stroke 300 will be described as an example.

The washing stroke 100 alternately agitates the water tank 100 in which the washing water is supplied by the water supply unit 60 and the inner tank 24 in both directions according to a preset algorithm so that laundry can be evenly distributed in the inner tank 24. Rotation of the inflated 120 and the pulsator 25 to rotate continuously in one direction or stirring stirring alternately in both directions, and the inner tank 24 to rotate continuously in one direction to the centrifugal force It includes a centrifugal washing 140 so that the laundry adheres to the inner wall of the inner tub 24, and a simple dehydration 150 for rotating the inner tub 24 at high speed to dehydrate the laundry. The simple dewatering 150 includes an acceleration 151 for performing the centrifugal washing 140 and accelerating the rotational speed of the rotating tub 24, and a drain 152 for draining the laundry dewatered from the laundry to the outside. . In this case, the acceleration 151 and the drainage 152 may be performed at the same time, or the drainage 152 may be achieved by repeatedly operating the pump 40 in accordance with a predetermined algorithm or the water level in the outer tank 22 during the acceleration 151. It is possible.

As described above, the process in which the centrifugal washing 180 and the simple dewatering 190 is continuously performed, by accelerating the rotational speed of the inner tub 24 being rotated during the centrifugal washing 180 so that the simple dewatering 190 is made. It is not necessary to perform the conversion of the clutch, and also directly enters the simple dehydration 190 without undergoing a separate drainage process, thereby reducing the time required for entering the dehydration and washing as a whole.

In addition, since the inner tank 24 accelerates the inner tank 24 while the inner tank 24 is full of washing water, and the simple dewatering 190 proceeds, the inner tank 24 is less eccentric than the empty state. In general, vibration is most generated at the initial stage of dehydration, and thus, a process for dispersing laundry in the inner tank 24 is performed. The washing machine according to an embodiment of the present invention is washed in the inner tank 24 as described above. The dehydration proceeds immediately in the cold state, and the drainage process can be omitted by gradually draining water during the dehydration process, and the incidence of dehydration entry failure due to the dispersal failure is significantly reduced, the vibration and noise are reduced, and the dehydration is required. This can save time.

In the present embodiment, after the simple dewatering 150, the water supply 160, the stirring washing 170, the centrifugal washing 180, and the simple dewatering 150 are sequentially made, but the present invention is not limited thereto. However, it is not necessary that all of the above processes be performed in succession.

After completion of the washing stroke 100, the rinsing stroke 200 is performed. The washing stroke 100 and the rinsing stroke 200 may be distinguished by the difference of the detailed steps performed at each stroke, but may be more clearly distinguished by the status display 52a displayed to the outside through the display portion 52a. have.

When the rinsing stroke 200 is initiated, the water supply 210 is once again made to rinse the laundry, and after the water supply 210, the inflating 220 is performed. Since the water supply 210 and the bubble 220 are made in the same or similar manner as in the washing stroke 100 described above, description thereof will be omitted.

The rinsing 230 is performed after the laundry is uniformly dispersed in the inner tub 24 by the inflating 220. Rinsing 230 is a process of removing the detergent and contaminants on the laundry by the wash water supplied in the water supply step 210 while the inner tank 24 and / or the pulsator 25 is rotated at this time for washing such as fabric softener An additive may be added.

The rinsing 230 is performed by rotating the inner tub 24 and / or the pulsator 25, where the controller 55 controls the motor 32 and the clutch so that the inner tub 24 continues in one direction continuously. It may be performed in various ways, such as to be rotated, alternately rotated in both directions, the pulsator 25 is continuously rotated in one direction, or repeatedly rotated alternately in both directions. Of course, it is also possible that the inner tub 24 and the pulsator 25 are rotated together.

After rinsing 230 is performed, liver dehydration 240 is performed. At this time, the last step of the rinsing 230 is preferably set to rotate the inner tank 24, the simple dehydration 240 is dewatering from the acceleration 241 and the laundry to accelerate the rotational speed of the rotating inner tank 24 Drain 242 for draining the wash water to the outside.

After the simple dewatering 240, the control unit 55 controls the water supply unit 60 to perform a spray rinse 250 in which the washing water is sprayed through the spray nozzle 27. In the spray rinse 250, the spray is made so that the washing water reaches the inner wall of the inner tank 24 through the spray nozzle 27. Therefore, in order to rinse the laundry effectively, it is preferable that the laundry be rotated at a speed at which the laundry adheres to the inner wall of the inner tub 24 by centrifugal force. The spray rinsing method 250 as described above has an effect of drastically reducing the amount of washing water required as well as improving rinsing performance because the washing water is directly injected to the laundry.

On the other hand, when the spray rinsing 250, the pump 40 is operated together and the drainage can be made at the same time, in this case, the rinsing performance is prevented by the second water contamination by the washing water after rinsing the laundry This is improved.

After the rinsing stroke 200 is completed, the dehydration stroke 300 is performed. In this case, as described above, the rinsing stroke 200 and the dehydrating stroke 300 may be divided by the display unit 52.

The dehydration stroke 300 includes a preliminary dehydration 310 for performing a primary acceleration 311 that primarily accelerates the rotational speed of the rotating inner tank 24 to perform the spray rinsing 250, and a preliminary dehydration 310. It includes a dewatering 320 to perform the secondary acceleration 321 to increase the rotational speed of the inner tank 24 than when).

Drainage 330 is made during the dehydration stroke 300, the drainage 330 is made in the same or similar manner as the drainage performed during the above-described washing or rinsing stroke.

On the other hand, during centrifugal washing 180 or jet rinsing 250, the inner tank 24 is rotated, wherein the inner tank 24 is rotated at a speed at which the laundry can adhere to the inner wall of the inner tank 24 by centrifugal force can do.

In this case, two types of water flows generated by the rotation of the inner tub 24 can be predicted. First, as shown in FIG. 5, the laundry m is different from the inner wall of the inner tub 24. By the centrifugal force, the washing water rises between the inner tank 24 and the outer tank 21, but the washing water rises to a position lower than the upper end of the outer tank 21, which is defined as a compressed water stream.

Second, as shown in FIG. 6, the laundry m is stuck to the inner wall of the inner tub 24, and the washing water rises between the inner tub 24 and the outer tub 21 by centrifugal force, so that the bottom surface of the outer tub cover 26 is shown. Guided along the water flow back to the inner tank 24 is defined as alpha-type water flow.

Any of the centrifugal washing (140) (180) and the spray rinsing (230), 250, the inner tank 21 can be rotated to form a compressed water or alpha-type water flow, the inner tank 21 and the outer tank 24 Accordingly, the height of the washing water rising is controlled by various variables such as the amount of the washing water, the amount of the washing water, and / or the rotational speed of the motor 32. The speed does not have to be faster than the rotational speed of the inner tub 24 at the time of the pressurized water flow.

On the other hand, in the washing method according to an embodiment of the present invention, washing or rinsing is performed while the inner tank 24 is rotated, and the washing water is drained by dehydrating the laundry while accelerating the rotating inner tank 24. This process can be done within each stroke or by successive strokes.

In the case where each stroke is made, the process of the simple dehydration 150 followed by the centrifugal washing 140 in the washing stroke 100 and the simple following the spray rinsing 230 in the rinsing stroke 200. This is the process of dehydration 240 is made. That is, during centrifugal washing 140 and jet rinsing 230, the inner tank 24 is rotated, and the quick dewatering 240 is performed by accelerating the rotating inner tank 24 at this time. At this time, the drainage can be made together with the simple dehydration 240 has been described above.

In the case of successive strokes, the dehydration stroke 300 is performed continuously after the rinsing stroke 200. The final step of the rinsing stroke 100 is spray rinsing in which the inner tank 24 is rotated. 250, and the first step of the dewatering stroke 300 performed after the spray rinsing 250 is a step of preliminary dehydration 310 to accelerate and rotate the inner tank 24 in rotation. Even when the dehydration stroke 300 is performed after the completion of the washing stroke 100, dehydration is achieved by accelerating the inner tub 24 that is rotating as above.

Referring to Figure 7, looks at the operation of each component of the washing machine (1) operation.

In the case of the water supply 110, water injection via the detergent box 15 and / or injection by the injection nozzle 27 (hereinafter referred to as water supply / injection) is performed, and the motor 32 is stirred in both directions at a low speed. Rotate to loosen the packed laundry and wet the laundry effectively.

After the washing water in the inner tank 24 reaches a certain amount, the water supply / injection is stopped, and the motor 32 rotates alternately in both directions at a speed up to RPM 1, which is faster than the water supply 110. By doing so, while the tangled laundry is released, the inflating 120 is evenly distributed in the washing tank 24. The controller 55 may quantitatively calculate the degree of eccentricity of the laundry by measuring the acceleration or deceleration degree of the rotational speed of the motor 32 in the inflated 120, and when the measured eccentricity is less than or equal to a predetermined value. It is also possible to control the inflated 120 to be repeated.

After the inflating 120, the stirring washing 130 in which the motor 32 is controlled at a speed of RPM 3 is performed so that the pulsator 25 is rotated in a continuous or bidirectional manner in one direction at a high speed to perform a washing with detergent. Washing is performed by chemical action and friction between the pulsator 25 and the laundry.

After performing the stirring washing 130, centrifugal washing 140 is performed in which the motor rotates up to the speed of RPM 2 so that the inner tank 24 is alternately rotated continuously in one direction or in both directions. RPM 1 is a speed at which compressed water or alpha-type water can be formed, and is set in consideration of variables such as the amount of laundry and the amount of wash water.

Thereafter, a simple dewatering 150 for dewatering the laundry by accelerating the inner tank 24 rotating at RPM 2 is performed, wherein the motor 32 is accelerated at a speed up to RPM 4, and the drainage by the pump 40 is increased. The display unit 52 indicates that dehydration is in progress. In FIG. 7, only the operation state of the display unit 52 is displayed as ON and OFF on the basis of the display indicating that dehydration is in progress. In addition to the display, the progress display 52a indicating the respective strokes is also turned on.

In addition, until the end of the rinse stroke 200, the motor 32 is rotated at a speed of RPM 2, the inner tank 24 is rotated and the injection rinsing 250 is performed to feed water / spray, and after entering the dehydration stroke 300 , To accelerate the inner tank 24 which is rotating until the end of the rinsing stroke 200, that is to say, the preliminary dehydration 310 for accelerating the rotational speed of the motor 32 to RPM 4 is performed, and the motor after the preliminary dehydration 310 is performed. Main dewatering 320 is performed to further increase the rotational speed of 32 to RPM 5. In the dehydration stroke 300 in which the preliminary dehydration 310 and the main dehydration 320 are performed, the pump 40 and the display unit 62 operate as in the simple dehydration 150 described above.

On the other hand, the dehydration 320 is not only the rotational speed of the motor 32 reaches the RPM 5 continuously at a time, but also increases the speed of the motor 32 step by step to reach RPM 5 through several speed steps It is also possible to be configured to.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not limiting. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted

<Explanation of symbols for the main parts of the drawings>

1 is a side cross-sectional view cut away to reveal the internal structure of a washing machine according to an embodiment of the present invention.

FIG. 2 illustrates a coupling relationship between the top cover and the injection unit shown in FIG. 1.

3 is a block diagram showing a control relationship between main components of the washing machine shown in FIG.

Figure 4 shows a washing method according to an embodiment of the present invention.

5 and 6 show the compressed water and the alpha-type water flow respectively generated according to the rotating aspect of the inner tank shown in FIG.

Figure 7 shows the operating state of the washing machine main configuration controlled by the washing method according to an embodiment of the present invention.

8 illustrates a display unit applied to a washing machine according to an embodiment of the present invention.

Claims (18)

It is rotatably provided in the outer tank and the outer tank to supply the washing water in the inner tank to accommodate the laundry, Washing or rinsing the laundry by rotating any one of the inner tank or a pulsator rotatably provided in the inner tank, Washing method for dehydrating the laundry by draining the washing water while accelerating the inner tank while the inner tank is rotating. The method of claim 1, The acceleration of the inner tank, Washing method accommodated in the inner tank to accelerate the inner tank is rotating at a speed that can be in close contact with the side of the inner tank. The method of claim 1, The acceleration of the inner tank, And the laundry adheres to the side surface of the inner tub, and accelerates the inner tub being rotated at a speed that the washing water rises between the inner tub and the outer tub and can be guided into the inner tub. The method of claim 1, Acceleration of the inner tank And the laundry adheres to the side of the inner tub, and accelerates the inner tub being rotated at such a rate that the washing water can rise between the inner tub and the outer tub to a position lower than the top of the outer tub. The method of claim 1, Washing method in which the inner tank is accelerated and dehydration is displayed. The laundry is supplied into the outer tub and the inner tub rotatably provided in the outer tub, and the laundry is rinsed or rinsed by selectively rotating the inner tub or a pulsator rotatably provided in the inner tub. Washing or rinsing strokes terminated while being rotated; And And a dewatering stroke for draining the wash water while accelerating the rotating inner tank after the dehydration or rinsing stroke. The method of claim 6, Washing method is displayed that the dehydration stroke is started. The method of claim 7, wherein The dehydration process is initiated washing method displayed on the display provided in the control panel. The method of claim 6, The washing or rinsing stroke is, Washing method that is terminated while the inner tub is rotated at a speed that the laundry contained in the inner tub can be in close contact with the side of the inner tub. The method of claim 6, The washing or rinsing stroke is, The laundry is in close contact with the side of the inner tank, the washing method is finished while the inner tank is rotated at a speed that can be guided into the inner tank after the washing water rises between the inner tank and the outer tank. The method of claim 6, The washing or rinsing stroke is, The laundry is in close contact with the side of the inner tank, the washing method is terminated while the inner tank is rotated at a rate that the washing water can be raised to a position lower than the upper end of the outer tank between the inner tank and the outer tank. A bath containing washing water; An inner tub rotatably provided in the outer tub to accommodate laundry; A pulsator rotatably provided in the inner tank; A pump for draining the washing water in the outer tank; And The washing is performed while the inner tub is rotated so that any one of the pulsator and the inner tub is rotated while the washing water is filled in the inner tub to wash or rinse the laundry, and the laundry or rinsed laundry is dehydrated. Or a control unit for terminating the rinsing stroke, controlling the dewatering stroke to be performed by operating a pump to accelerate the inner bath in rotation and drain the wash water dewatered from the laundry. 13. The method of claim 12, The control unit, When washing or rinsing the laundry, the laundry is rotated for a predetermined time at a speed that the laundry can be in close contact with the side of the inner tank, and then the rotating inner tank is accelerated and the pump is operated. 13. The method of claim 12, The control unit, When washing or rinsing the laundry, the laundry adheres to the side of the inner tank, and after washing water rises between the inner tank and the outer tank, the inner tank is rotated at a speed that can be guided into the inner tank, and the rotating inner tank Washing machine to accelerate the operation and operate the pump. 13. The method of claim 12, The control unit, When washing or rinsing the laundry, the laundry is in close contact with the side surface of the inner tank, and the washing water is rotated at a speed at which the washing water can be raised to a position lower than the upper end of the outer tub along the inner tank and the outer tank, Washing machine for accelerating rotating tank and operating the pump. A washing or rinsing stroke and a washing machine in which a dehydration stroke is performed after the washing or rinsing stroke, A bath containing washing water; An inner tub rotatably provided in the outer tub to accommodate laundry; A pulsator rotatably provided in the inner tank; And In the washing or rinsing stroke, the inner tub or pulsator is selectively rotated so that washing or rinsing of the laundry is performed, ending the washing or rinsing stroke in progress while the inner tub is rotating, accelerating the inner tub, And a control unit for controlling the dewatering stroke to operate the pump. The method of claim 16, Further comprising a display unit for displaying the operating state of the washing machine, The control unit, The washing machine for controlling the washing or rinsing stroke and the dehydration stroke to be displayed differently through the display unit. The method of claim 17, The control unit, And a washing machine that displays the washing or rinsing stroke displayed on the display unit to change to an indication indicating that the washing or rinsing stroke is in progress.

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