KR20120043932A - Washing machine and method to control thereof - Google Patents

Abstract

PURPOSE: A washing machine and a control method thereof are provided to sufficiently dissolve detergent without fast rotation of a washing tub and a pulsator and generate bubbles while supplying washing water step by step. CONSTITUTION: A control unit supplies washing water to a tube step by step up to a set water level during a washing process(110). The control unit generates bubbles in each process(116). The control unit drives a pulsator so that the bubbles enter into a washing tub(120). The control unit stops the pulsator if the time for driving the pulsator is over(122,124).

Description

Washing machine and method to control

A washing machine using a bubble and a control method thereof.

In general, a washing machine is a device that separates contaminants from a laundry cloth by applying energy such as impact to the laundry cloth, and the washing machine may be divided into a pulsator washing machine, an agitator washing machine, and a drum washing machine according to a method of applying energy to the laundry cloth.

Here, the pulsator washing machine is a method of washing with water generated by rotating the disk-shaped pulsator, the agitator washing machine is a method of washing by rotating the wing-shaped stirrer to the left and right in the center of the washing tank, washing the drum The method of washing the laundry cloth by dropping the laundry cloth by the rotation of the drum to give a shock to the laundry cloth.

Since the washing machine proceeds after most washing water is supplied through a single water supply to the set water level, washing is possible only after the detergent is dissolved in a large amount of water. Therefore, it is difficult to dissolve the detergent sufficiently in the early stage of washing, and therefore, it is difficult to increase the effect of removing the contaminants by the chemical action of the detergent. In addition, because the amount of washing is large, washing is performed with relatively low concentration of tax solution, which makes it difficult to effectively dissolve and remove contaminants.

In order to compensate for the above problems, a washing machine of a washing-type method was proposed in which a detergent was sufficiently dissolved in the wash water to perform washing with a high concentration of tax liquor from the beginning of washing. Such a washing machine waters a small amount of water in the washing tank, rotates the washing tank and the pulsator at a high speed to form a high concentration of the detergent solution in which detergent is sufficiently dissolved, and then supplies the washing water to the set water level again. However, this type of washing machine is mainly affected by the amount of the tax on the laundry located below a small level of water supplied in the washing tank to form a high concentration of the tax. Therefore, there is a problem in that the laundry is not uniformly distributed throughout the laundry distributed vertically in the washing tank, the non-uniform washing is performed. And there is a problem that damage to the laundry occurs in the process of rotating the washing tank and pulsator at high speed to dissolve the detergent sufficiently.

In one aspect of the present invention, while the detergent solution is sufficiently dissolved in the detergent tank without the high-speed rotation of the washing tank and pulsator while supplying the wash water step by step so that a high concentration of the detergent solution is sufficiently delivered to the laundry inside the washing tank It provides a washing machine and a method of controlling the same.

The control method of the washing machine according to an embodiment of the present invention for the control method of the washing machine including a tub, a washing tub installed in the tub, a pulsator installed to be rotatable in the washing tank, up to the set water level during the washing administration Supplying the wash water to the tub step by step a plurality of times; Generating bubbles for each step of supplying the wash water to the tub; And drive the pulsator to allow the bubble to flow into the wash tub.

The step of supplying the wash water to the tub in a plurality of times up to a set water level, setting the detailed water level of each step of supplying the wash water; The wash water may be supplied to the tub to reach the detailed water level of each step.

Setting the detailed water level of each step of supplying the washing water may be set according to the amount of laundry put into the washing tank.

The first level of detail may be set so that the nozzle which is installed at the lower part of the tub and supplies the bubble to the tub may be locked.

The generation time of the bubble may be adjusted in proportion to the interval between the water levels.

The driving time of the pulsator may be adjusted in proportion to the interval between the water levels.

Driving the pulsator may drive the pulsator for a predetermined time in either the clockwise or counterclockwise direction.

The preset time may be about 1 minute or less.

The driving of the pulsator may alternately drive the pulsator clockwise and counterclockwise for a predetermined time.

To alternately drive the pulsator clockwise and counterclockwise for a predetermined time period, when the driving direction of the pulsator is switched clockwise or counterclockwise, the driving of the pulsator is stopped for a predetermined time and then the drive is performed. You can switch directions.

The preset time is about 4 minutes or less, and the time when the pulsator is driven clockwise or counterclockwise may be set to be shorter than the time when the driving of the pulsator is stopped.

The time when the pulsator is driven clockwise or counterclockwise is about 1 minute or less, and the time when the pulsator is stopped is about 3 minutes or less.

When the set water level is reached, it may further include driving the pulsator to be washed by a mechanical force.

According to one aspect of the present invention, since the bubble is generated at each step while supplying the washing water step by step, regardless of the location of the laundry in the washing tank, a high concentration of the washing liquid is evenly delivered to the laundry through the bubble to effectively remove contaminants. Can be done.

In addition, by minimizing the rotation of the pulsator and the washing tank during the generation and supply of bubbles, it is possible to prevent the fabric from being entangled or damaged due to the high speed rotation.

1 is a sectional view of a washing machine according to an embodiment of the present invention;
2 is a control block diagram of a washing machine according to an embodiment of the present invention.
3 to 9 are views illustrating a bubble generation process in the washing machine according to an embodiment of the present invention.
10 is a flow chart showing a bubble generation and supply process of the washing machine according to an embodiment of the present invention.

Hereinafter, a washing machine and a control method of the washing machine according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the configuration of a washing machine according to an embodiment of the present invention.

As shown in Figure 1, the washing machine according to the embodiment of the present invention is installed in the main body 10, the tub 11 containing water (washing water or rinsing water), and the tub 11 to accommodate the laundry It includes a washing tub 12 rotatably installed in the interior of the plurality of holes 13 are formed. The washing tank 12 includes a pulsator 14 installed to be rotatable and generating water flow while rotating clockwise or counterclockwise.

The outer side of the tub 11 has a motor 15 for generating a driving force for rotating the washing tub 12 and the pulsator 14 and a driving force generated from the motor 15 for the washing tub 12 and the pulsator 13. ) Is provided with a power switching device 16 to transmit simultaneously or selectively.

The motor 15 is a direct drive type motor having a variable speed function, and the motor 15 drives or selectively drives the driving force to the washing tank 12 and the pulsator in accordance with the lifting or lowering operation of the power switching device 16. To pass. Instead of a direct-drive motor, a belt-pulley-powered motor can be used. Reference numeral 17 denotes a hollow dewatering contraction coupled to the washing tub 12, and reference numeral 18 denotes a dewatering contraction through the tub 11 and the dehydration shaft 17 so as to be connected to the pulsator 14. The washing shaft provided in the hollow part of 17) is shown.

The tub 11 is provided with a water level sensor 19 for detecting the amount (water level) of water in the tub 11. The water level sensor 19 may measure the water level by detecting a frequency that changes according to the amount of water supplied into the tub 11. The water level sensor 19 measures the water level, so that the desired amount of washing or rinsing water can be supplied, or the desired amount can be drained.

The upper part of the tub 11 is provided with a water supply device 20 for supplying the wash water to the tub (11). The water supply device 20 includes a water supply valve 23 for controlling water supply, and a water supply pipe 21 for connecting the water supply valve 23 and the detergent supply device 30.

One end of the water supply pipe 21 is connected to an external water source (not shown), and the other end of the water supply pipe 21 is connected to the detergent supply device 30.

The detergent supply device 30 includes a case 31 and a detergent container 33 detachably mounted to the case 31 and containing each detergent. The bottom of the case 31 is formed with a discharge port 35 for discharging the wash water in which detergent is dissolved.

Water supplied through the water supply pipe 21 is supplied into the tub 11 together with the detergent via the detergent supply device 30.

At the lower side of the tub 11, a circulation device 50 for circulating the wash water in the tub 11 and a drainage device 60 for draining the wash water in the tub 11 are provided in the pump case 40. It is installed symmetrically with each other, between the tub 11 and the pump case 40, a connection hose 41 for guiding the wash water of the tub 11 to the pump case 40 is installed.

The circulation device 50 is a circulation pump 51 for supplying the washing water guided to the pump case 40 to the inside of the tub 11, and a circulation pipe installed at the outlet side of the circulation pump 51 to circulate the washing water. 52 are formed at the outlet of the circulation pipe 52 and are provided in the circulation nozzle 53 and the circulation nozzle 53 for supplying the washing water to the lower side of the tub 11 and are supplied to the lower side of the tub 11. Air inlet hole (54) for introducing air to generate bubbles in the wash water to be introduced, the air inside the tub 11 through the air inlet hole (56) to guide the air guide tube (54) And 55.

One end of the circulation pipe 52 is connected to the circulation pump 51 and the other end of the circulation pipe 51 is connected to the tub 11 so that the washing water in the tub 11 is connected to the connection hose ( 41 is guided to the pump case 40, the wash water guided to the pump case 40 has a structure that is supplied back to the tub 11 through the circulation pipe 52 and circulated.

The circulating nozzle 53 is composed of a venturi tube capable of lowering the pressure of the circulating turbid water, and the air introduced through the air suction hole 56 is circulated through the air inlet hole 54 through the air guide tube 55. By allowing the natural inflow into the 53, it is possible to generate bubbles by forming the detergent in the wash water as an aggregate even without a separate power supply unit for supplying air.

The circulator 50 according to the embodiment of the present invention generates bubbles in order to be washed by the foam bubbles inside the washing tank 12, the principle is as follows.

When the wash water discharged from the circulation pump 51 passes through the circulation nozzle 53 through the circulation pipe 52, the water pressure suddenly decreases, and the air in the washing tank 12 passes through the air inlet hole 54. 53). Therefore, bubbles are generated in the wash water supplied to the bottom of the tub 11 to generate a bubble combining the detergent and the air bubbles in the wash water. As the volume of the wash water increases due to the generation of the bubble, the tax solution sufficiently dissolved in the cloth located inside the washing tank 12 is evenly transferred through the bubble to allow uniform washing.

The drainage device 60 includes a drain pump 61 for draining the sludge water guided to the pump case 40 to the outside, and a drain pipe 62 installed at an outlet of the drain pump 61 to drain the sludge water. .

On the other hand, in the embodiment of the present invention has been described with the circulating pump 51 and the drain pump 61 symmetrically installed in the pump case 40 as an example, the present invention is not limited to this and the circulation pump 51 and The drain pump 61 may be installed side by side in the same direction of the main body 10, and may be applied to any structure that can circulate and drain the wash water.

2 is a control block diagram of a washing machine according to an embodiment of the present invention, the washing machine according to an embodiment of the present invention is the input unit 60, the control unit 62, the drive unit 64, the water level sensor 19 and the display Part 66 is included.

The input unit 60 transmits the washing course selected by the user (for example, a bubble washing course or a general washing course), and operation information such as dehydration RPM and rinsing to the controller 62.

The control unit 62 is a microcomputer that controls the overall operation of the washing machine such as washing, rinsing, and dehydration according to the driving information transmitted from the input unit 60. In the washing operation using the bubble, the bubble is reduced while the clothes are damaged by the mechanical force. In order to provide an algorithm that can be evenly absorbed by the fabric, it stores the wash water level, bubble generation time, and the driving cycle of the pulsator.

When the bubble washing course is input, the controller 62 sets the water level and the bubble generation time of the washing water to be supplied to the washing tank 12 according to the amount of laundry put into the washing tank 12.

The control unit 62 divides the water level of the wash water set according to the amount of laundry into a plurality of sub-levels, and supplies the water level by level without supplying the wash water at a time up to the set level of the washing water. Allow the wash water to reach a level.

The controller 62 may set the plurality of detailed water levels in proportion to the level of the washing water set according to the amount of laundry. For example, if the weight of the cloth is 3Kg and the water level set accordingly is the water level corresponding to the quantity of 15L, if the water level is divided into four sub-levels, the weight of the laundry is 1.5Kg and is set accordingly. When the water level of the wash water corresponds to a water level of 7.5L, the detailed water level can be set by dividing the water level into two water levels. The detail level may be set by dividing the level of the wash water evenly according to the weight of the laundry, but is not limited thereto. If a lot of laundry accumulates, there is a possibility that the laundry existing under the load accumulated by gravity may accumulate at a higher density than the laundry existing at the top, so that the water level at the lower portion of the stacked laundry may be set to have a smaller interval. have. The level of detail is set so that the level of detail of the next level is higher than the level of detail of the previous level.

The controller 62 controls the water supply valve 23 so that the above-described step water supply is achieved.

The control unit 62 generates a bubble by driving the circulation pump 51 during the bubble generation time set according to the amount of the laundry at each step of supplying the washing water to reach the detailed water level, and the generated bubble is the tub 11. To be supplied internally.

The control unit 62 stops the generation of bubbles when the bubble generation time has elapsed, so that the bubbles supplied to the space between the tub 11 and the washing tank 12 are introduced into the washing tank 12 to be evenly adsorbed to the laundry. The pulsator 14 is driven in accordance with the driving cycle of the pre-stored pulsator 14.

The controller 62 may drive the pulsator 14 in either a clockwise or counterclockwise direction, and may alternately drive the clockwise and counterclockwise directions.

When the pulsator 14 is driven in one direction, the driving period of the motor 15 which provides the driving force to the pulsator 14 is, for example, 2 "/ 5" (2 seconds on / 5 seconds off), 3 The driving cycle of "4" (3 sec on / 4 sec off) and 4 "/ 3" (4 sec on / 3 sec off) is the drive time that adds the on time and the off time of the motor 15 to a fixed time. It can be designed not to exceed (about 10 seconds).

When the pulsator 14 is driven alternately clockwise and counterclockwise, the driving period of the motor 15 which provides the driving force to the pulsator 14 is, for example, 1 "/ 3" / 1 "/ 3. "(Clockwise 1 second on / 3 seconds off, counterclockwise 1 second on / 3 seconds off, clockwise and counterclockwise order may be reversed. Same as below), 1.5" /2.5 "/1.5" /2.5 "(1.5 seconds on / 2.5 seconds off clockwise, 1.5 seconds on / 2.5 seconds off counterclockwise), 2" / 2 "/ 2" / 2 "(clockwise 2 seconds on / 2 seconds off, 2 counterclockwise) It is possible to design such that the driving cycle that adds the on time and the off time of the motor 15 does not exceed a predetermined time (about 10 seconds) at a drive operation rate of ultra on / 2 seconds off).

When the pulsator 14 is alternately driven clockwise and counterclockwise, but alternately twice, the driving period of the motor 15 which provides the driving force to the pulsator 14 is, for example, 0.5 "/1.5". /0.5"/1.5 "(clockwise 0.5 seconds on / 1.5 seconds off, counterclockwise 0.5 seconds on / 1.5 seconds off, clockwise and counterclockwise can be reversed) and can be repeated twice The driving operation ratio may be designed such that the driving period that adds the on time and the off time of the motor 15 does not exceed a predetermined time (about 10 seconds).

When the pulsator 14 is driven alternately in the clockwise and counterclockwise directions, the driving direction of the pulsator 14 without the time when the driving of the pulsator 14 is switched off when the driving direction of the pulsator 14 is switched. Of course, the driving cycle can be designed to be switched in the other direction.

As described above, when the on-time of the motor 15 is set to a long time when the pulsator 14 is driven, the on-time of the motor 15 is fixed for a predetermined time (about 4 seconds or less, since cloth damage is caused by mechanical friction. It is preferable to set the following.

In this way, if the pulsator 14 frequently rotates within a short driving period (on time + off time) within the driving time (about 10 seconds), the pulsator 14 is located in the space between the tub 11 and the washing tank 12 and the washing tank 12 Bubbles not introduced into the inside are introduced into the washing tank 12 by the centripetal water flow generated by the rotation of the pulsator 14. In this process, a high concentration of detergent on the bubble surface can be evenly adsorbed on the cloth accumulated in the washing tank.

As described above, the control unit 62 controls the water level of the washing water, the bubble generation time, the driving time of the pulsator during the washing operation, so that the bubble is evenly absorbed in the laundry while reducing the damage of the clothing by the mechanical force, The operation of the valve 23, the circulation pump 51 and the motor 15 is controlled.

The driver 64 drives the water supply valve 23, the circulation pump 51, the motor 15, and the like according to the drive control signal of the controller 62.

The water level sensor 19 detects a frequency varying according to the amount of wash water supplied into the tub 11 and measures the level of the wash water, so that a desired amount of water supply and drainage can be made.

The display unit 66 displays an operating state of the washing machine according to the display control signal of the controller 62.

3 to 9 are diagrams illustrating a bubble generation process according to an embodiment of the present invention. Hereinafter, the water level of the washing water set according to the amount of laundry is divided into three sub-levels, that is, the first sub-water level (①), the second sub-water level (②), and the third sub-water level (③). The case where a bubble occurs is demonstrated as an example.

Referring to FIG. 3, the washing water (water + detergent) starts to be supplied to the tub 11 and is supplied to the first detailed water level ①. The first sub-level may be determined as the level at which the circulation nozzle 53 is locked.

Referring to FIG. 4, when the washing water is supplied to the tub 11, the circulating pump 50 is operated so that the washing water discharged from the circulating pump 51 flows into the circulating nozzle 53 through the circulating pipe 52, and venturi. Pass through the circulation nozzle (53) consisting of a tube.

When the pressure of the wash water is lowered while passing through the circulation nozzle 53, the air inside the tub 11 is introduced into the circulation nozzle 53 through the air inlet hole 54. The air introduced into the circulation nozzle 53 is injected into the space between the washing water supplied to the tub 11 and the tub 11 and the washing tub 12 to form air bubbles in the washing water. Air bubbles formed in the washing water rise to the surface of the washing water between the tub 11 and the washing tub 12 to form bubbles, and the formed bubbles move to the top of the space between the tub 11 and the washing tub 12. At this time, a portion of the bubble formed between the tub 11 and the washing tank 12 passes through the lower surface hole installed on the lower surface of the washing tank 12 or through the side hole provided on the side of the washing tank 12 to the inside of the washing tank 12. Enter. However, most of the bubbles are located along the space between the tub 11 and the washing tank 12 having no moving resistance.

Referring to FIG. 5, the pulsator 14 is driven clockwise or counterclockwise to introduce bubbles located along the space between the tub 11 and the washing tub 12 into the washing tub 12. When the pulsator 14 is driven in a clockwise or counterclockwise direction, centripetal water flow is generated and bubbles located along the space between the tub 11 and the washing tub 12 are introduced into the washing tub 12. The pulsator 14 may rotate in either a clockwise or counterclockwise direction, and may alternately rotate clockwise and counterclockwise. When the bubble is introduced into the washing tank, the bubble is evenly absorbed by the laundry positioned to a certain height above the first detailed water level (①), and the high concentration of the tax solution may be delivered to the laundry.

In FIG. 6, when the rotation of the pulsator 14 is stopped and the bubble is evenly absorbed by the laundry positioned to a certain height above the first detail level ①, the second detail level higher than the first detail level ① of FIG. 3. Washing water is again supplied to the tub 11 until it reaches (②). The second sub-level (②) may be set to be below the height of the laundry is expected to be delivered through the bubble generated in the first sub-level (①). By setting the next water level at a particular water level in this way, the tax liquor can be evenly delivered to all the laden laundry.

Among the bubbles generated in the first sub-level (①), the remaining bubbles other than the bubbles adsorbed to the laundry are raised together with the washing water in the process of supplying the washing water to the second sub-level (②). In this process, after water supply to the second detailed water level ②, the remaining bubbles generated at the first detailed water level ① may be preliminarily delivered to the laundry before the generation and delivery of the bubbles in earnest.

Referring to FIG. 7, when the washing water is supplied to the second sub-level, bubbles are generated again, and the generated bubbles move to the upper portion of the space between the tub 11 and the washing tub 12. Most of the bubbles are located along the space between the tub 11 and the washing tank 12 having no movement resistance.

Referring to FIG. 8, bubbles located along the space between the tub 11 and the washing tub 12 are introduced into the washing tub 12 by the centripetal water flow generated through the rotation of the pulsator, and when the bubbles are introduced into the washing tub. Bubbles are evenly absorbed in the laundry positioned to a certain height above the second sub-level (②) so that the high concentration of the tax liquor can be delivered to the laundry.

Referring to FIG. 9, when the rotation of the pulsator 14 stops and the bubble is uniformly absorbed by the laundry positioned to a certain height above the second subwater level ②, the third elevated water level is higher than the second subwater level ② of FIG. 6. Washing water is again supplied to the tub 11 until the detailed water level (③) is reached. The third detail level may be set on the same principle as that of the aforementioned second detail level ②.

Among the bubbles generated in the second sub-level ②, the remaining bubbles other than the bubbles adsorbed to the laundry are raised together with the washing water in the process of supplying the washing water to the third sub-level ③. In this process, after watering up to the third detailed water level ③, the remaining bubbles generated at the second detailed water level ② may be preliminarily delivered to the laundry before the generation and delivery of the bubbles are made in earnest.

When the wash water is supplied to the third detailed water level ③, the bubble generation described in FIGS. 4 and 5 or the description of FIGS. 7 and 8 and the introduction of the bubble into the washing tank 12 are repeated. Through such a process, a high concentration of detergent on the bubble surface may be absorbed evenly without washing the laundry accumulated in the washing tank 12.

10 is a flow chart showing a bubble generation and supply process of the washing machine according to an embodiment of the present invention.

When the laundry is put in the washing tank 12 and the user selects driving information such as a bubble washing course, dehydration RPM, and rinsing, the driving information selected by the user is input to the controller 62 through the input unit 60.

The control unit 62 determines whether the washing course selected by the user is a bubble washing course according to the driving information input from the input unit 70 (100), and if it is not the bubble washing course, performs the general washing course in the same manner as before. (102).

When the washing course selected by the user is a bubble washing course, the controller 62 detects the amount (load) of the laundry put into the washing tank 12 (104), and then determines the washing tank 12 according to the detected laundry amount. The level of the washing water to be introduced and the bubble generation time are set (106).

Subsequently, the control unit 62 determines the detailed level of each step in which the washing water is supplied by dividing the washing water level so that the washing water can be supplied step by step until the washing water level is set according to the amount of laundry (108). ).

Subsequently, the controller controls the water supply valve 23 to allow the washing water to be supplied to the tub 11 (110). At this time, the detergent in the detergent supply device 30 is dissolved by the water supplied to the wash water (water + detergent) is supplied to the tub (11).

At this time, the water level of the wash water being supplied is detected by the water level sensor 19, and the controller 62 determines whether the water level is the Nth detailed water level (N is natural water) (112). Hereinafter, N is described as 1. If the water level is not the first sub-level, the control unit 62 continues to supply the wash water until the first sub-level is reached. If the water level is the first sub-level, the control unit 62 turns off the water supply valve 23. The supply of washing water is stopped (114).

When the supply of the wash water to the first detailed water level is completed, the controller 62 generates a bubble (116). The control unit 62 operates the circulation pump 51, and when the circulation pump 51 operates, the washing water in the tub 11 is guided to the pump case 40 through the connection hose 41, and the pump case 40. The wash water guided to) is supplied again to the lower portion of the tub 11 through the circulation pipe 52 to circulate. At this time, when the circulated washing water passes through the circulation pipe 52 and passes through the circulation nozzle 53, the water pressure suddenly decreases, and the air naturally flows into the circulation nozzle 53 through the air inlet hole 54. The air introduced into the circulation nozzle 53 is injected into the wash water supplied to the lower portion of the tub 11, and is combined with the detergent to generate bubbles at the wash water surface. In this case, most of the bubbles formed between the tub 11 and the washing tub 12 are located along the space between the tub 11 and the washing tub 12 having no moving resistance.

Subsequently, the controller 62 determines whether the bubble generation time has elapsed (118). If the bubble generation time has not elapsed, the control unit 62 continuously generates bubbles and supplies them to the tub 11.

When the bubble generation time has elapsed, the controller 62 drives the pulsator 14 to introduce all the bubbles located along the space between the tub 11 and the washing tub 12 into the washing tub 12 (120). . The controller may drive the pulsator 14 in either a clockwise or counterclockwise direction, and alternately drive the clockwise and counterclockwise directions.

Subsequently, the controller 62 determines whether the driving time of the pulsator 14 has elapsed (122), and if the driving time of the pulsator 14 has not elapsed, the control unit 62 continuously drives the pulsator to drive the aforementioned motor. When the driving time of the pulsator 14 has elapsed, the driving of the pulsator 14 is stopped (124).

After the driving of the pulsator 14 is stopped, the controller 62 determines whether the current first detailed water level is the water level of the washing water set according to the amount of laundry (126). If the current water level does not reach the level of the wash water set according to the amount of laundry, the water supply valve 23 is controlled to supply the wash water again (128). At this time, the water level of the washing water supplied is detected by the water level sensor 19, and the controller 62 determines whether the water level is the N + 1 sub-level, that is, the second sub-level (130). If the water level is not the second sub-level, the control unit 62 continues to supply the wash water until the second sub-level is reached. If the water level is the second sub-level, the control unit 62 turns off the water supply valve 23. The supply of washing water is stopped (114).

Thereafter, the control unit 62 generates the bubble, supplies it to the tub 11, and drives the pulsator 14 to repeat the above-described processes of 116 to 124. That is, the controller 62 supplies the washing water to the tub 11 step by step several times until reaching the detailed water level, and generates bubbles at each step and supplies the tub 11 to the tub 11 and the pulsator 14. By repeating the above-described process of 116 ~ 124 to drive the bubble into the washing tank 12.

After that, when the current detailed water level reaches the level of the wash water set according to the amount of the laundry, the control unit 62 performs the present washing administration to remove sweat or dirt contained in the laundry using bubbles (132). .

11: tub 12: washing tub
13: hole 14: pulsator
15: motor 19: water level sensor
20: water supply device 30: detergent device
40: pump case 50: circulator
51: circulation pump 52: circulation pipe
53: circulating nozzle 54: air inlet hole
55: air guide pipe 60: drainage
61: drain pump 62: control unit

Claims (13)

In the control method of the washing machine comprising a tub, a washing tank installed inside the tub, a pulsator installed rotatably inside the washing tank,
Supplying the wash water to the tub in a plurality of steps up to a set water level during the washing operation;
Generating bubbles for each step of supplying the wash water to the tub;
Control method of the washing machine for driving the pulsator so that the bubble can be introduced into the washing tank. The method of claim 1,
Supplying the washing water to the tub in multiple stages up to the set water level,
Setting the detailed water level of each step of supplying the washing water;
Control method of the washing machine for supplying the washing water to the tub to reach the detailed water level of each step. The method of claim 2,
Setting the detailed water level of each step of supplying the wash water,
The control method of the washing machine is set according to the amount of laundry put into the washing tank. The method of claim 3,
The first sub-level of the sub-level is installed in the lower portion of the tub, the control method of the washing machine is set so that the nozzle for supplying the bubble to the tub can be locked. The method of claim 2,
The generation time of the bubble is controlled in the washing machine is adjusted in proportion to the interval between the water level. The method of claim 2,
The driving time of the pulsator is controlled in proportion to the interval between the water level is controlled. The method of claim 1,
Driving the pulsator,
The control method of the washing machine for driving the pulsator for a predetermined time in either the clockwise or counterclockwise direction. The method of claim 7, wherein
The preset time is about 1 minute or less control method of a washing machine. The method of claim 1,
Driving the pulsator,
The control method of the washing machine for driving the pulsator alternately clockwise and counterclockwise for a predetermined time. 10. The method of claim 9,
By alternately driving the pulsator clockwise and counterclockwise for a predetermined time,
When the driving direction of the pulsator is switched to the clockwise or counterclockwise direction, the control method of the washing machine to switch the driving direction after stopping the driving of the pulsator for a predetermined time. The method of claim 10,
The preset time is about 4 minutes or less, and the time when the pulsator is driven clockwise or counterclockwise is set shorter than the time when the driving of the pulsator is stopped. The method of claim 11,
And the time when the pulsator is driven clockwise or counterclockwise is about 1 minute or less, and the time when the pulsator is stopped is about 3 minutes or less. The method of claim 1,
When the set water level is reached, the control method of the washing machine further comprising driving the pulsator to be washed by a mechanical force.

Images