KR101138881B1 - Washing machine and method to control laundry thereof - Google Patents

Abstract

The present invention relates to a washing machine and a washing control method thereof, and to prevent the cloth from being damaged by friction and strong water flow of the laundry during washing by acting as a cushion to reduce the friction between the laundry by washing with foam, The purpose is to remove the dirt effectively with the high detergent concentration of the foam.

To this end, the present invention provides a control method of a washing machine that performs washing using foam, comprising the steps of: supplying detergent liquid and wash water into a space between a rotating drum and a water tank so as not to contact laundry loaded in a rotating drum; Generating bubbles from the detergent water mixed with the detergent solution and the wash water and supplying the laundry to the laundry; And washing the laundry using the foam.

Description

Washing machine and method to control laundry

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

2 is a control block diagram of a laundry control apparatus for a washing machine according to the present invention;

3 is a flow chart of the overall operation of the washing control method using foam in the washing machine according to the present invention;

4 is a detailed operation flowchart of the washing administration using foam in the washing machine according to the present invention,

5 is a graph showing the shrinkage rate of laundry when washing with the same concentration and washing the water in the washing stroke only,

6 is a graph comparing the degree of washing of the 60MU contaminated cloth when the same concentration of detergent water and foam immersion,

7 is a detailed operation flowchart of the first stroke for removing the foam after washing the foam in the washing machine according to the present invention,

8 is a detailed operation flowchart of the second stroke for removing the foam after washing the foam in the washing machine according to the present invention;

9 is a detailed flowchart of a third row definition for removing bubbles after lathering in a washing machine according to the present invention.

* Description of the symbols for the main parts of the drawings *

11: tank 12: rotating drum

17: water level detection unit 19: detergent supply device

20: water supply device 22: water supply pipe

24: water supply valve 25: connection pipe

30: detergent liquid supply device 31: supply water pipe

32: supply water valve 33: detergent liquid inlet valve

40: drying device 60: air supply device

61: air motor 62: air supply pipe

63 porous member 130 control unit

The present invention relates to a washing machine for washing laundry only with foam and a laundry control method thereof.

In general, a washing machine (usually a drum washing machine) includes a drum-type water tank containing wash water and a rotating drum rotatably installed inside the water tank to rotate laundry into which laundry is inserted. The device is to be washed by the force to drop the laundry to the upper side and falling.

When the user selects the washing course, the washing machine determines the washing water quantity according to the weight of the laundry (loading amount), waters a large amount of water into the tank according to the determined washing water amount, adds detergent, and then rotates the rotating drum. Laundry will be washed using a drop.

However, these washing machines need to fill the space between the water tank and the rotating drum for washing, so a large amount of water is used, and thus a large amount of energy is required to raise the temperature of the water. There was a problem that a large amount of detergent is used for a large amount of consumption and high concentration of laundry.

In addition, there is a problem that the damage to the cloth is large in the case of laundry that requires delicate washing, such as wool or silk fabrics by the friction of water and friction between the laundry and the rotation of the rotating drum.

Accordingly, the present invention is to solve the conventional problems as described above, an object of the present invention is to provide a washing machine and its washing control method that allows the laundry to be effective washing only foam without touching the water.

Another object of the present invention, the washing machine that can reduce the damage to the cloth in the case of laundry that requires a delicate washing by foaming serves as a cushion to reduce the friction between laundry, and can increase the cleaning power by a high concentration detergent on the foam surface and its washing To provide a control method.

Still another object of the present invention is to provide a washing machine and a washing control method thereof capable of adjusting a water supply amount and a detergent input amount for generating bubbles at a predetermined concentration.

It is still another object of the present invention to provide a washing machine and washing control method thereof capable of generating foam of an appropriate concentration according to the degree of contamination of laundry.

In order to achieve the above object, the present invention provides a control method of a washing machine that performs washing using foam, passing a predetermined amount of washing water to a detergent in a detergent supply device, and supplying the predetermined amount of washing water and the detergent to a detergent liquid. Feed to the device to produce a detergent liquid; The detergent liquid and the washing water are supplied into the space between the water tank and the rotating drum, and the level of the detergent water mixed with the detergent liquid and the washing water is previously set between the water tank and the rotating drum so as not to contact the laundry put into the rotating drum. Supplying the detergent liquid and the wash water so as to be supplied up to a set first level; When the level of the detergent water reaches the first level, the supply of the detergent liquid and the wash water is stopped, and air is supplied to the detergent water through an air supply pipe to generate bubbles between the water tank and the rotating drum. ; Bubbles generated between the water tank and the rotating drum are introduced into the rotating drum through the holes of the rotating drum; Performing a laundry administration for washing laundry in the rotating drum by using the foam filled in the rotating drum; As the washing process proceeds, it is determined whether the level of the detergent water reaches a second level set lower than the first level, and when the level of the detergent water reaches the second level, the detergent liquid and the wash water. It characterized in that the supply.

In addition, the detergent solution is characterized in that the predetermined amount of washing water is passed through the detergent in the detergent supply device, the predetermined amount of the washing water and the detergent is characterized in that it is produced by supplying to the detergent liquid supply device.

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In addition, the detergent solution is characterized in that for supplying a predetermined amount of detergent liquid in the space between the rotating drum and the water tank so that the concentration of the detergent water.

In addition, the supply flow rate of the wash water is controlled by a predetermined ratio and the supply amount of the detergent liquid in the space between the rotating drum and the water tank so that the concentration of the detergent water is constant.

In addition, when the water level of the detergent water reaches the first water level so as not to touch the laundry, it characterized in that the supply of the wash water is controlled by stopping the supply of the wash water.

In addition, when the detergent water is above the bubble generation water, it is characterized in that to generate air by spraying air to the detergent water.

In addition, the present invention is characterized in that for driving the rotating drum the laundry is introduced when the foam is generated.

In addition, the present invention further includes the step of removing the foam remaining in the laundry after performing the washing using the foam.

In addition, the step of removing the foam, after the washing drainage to remove the foam by intermittent dehydration to rotate or stop the rotating drum at a predetermined time interval; After removing the foam by washing the air with a drying fan after or at the same time as the washing drainage; and to remove the foam by supplying a certain amount of washing water after the washing drainage; characterized in that at least one or more.

In addition, when blowing air to the drying fan is characterized in that for supplying hot air by operating a drying heater.

In addition, the present invention has a rotating drum and a bath in which laundry is put, washing machine performing washing using foam, the water supply apparatus for controlling the supply of the washing water through the water supply valve; A detergent supply device receiving the washing water through a water supply pipe and supplying a detergent necessary for generating bubbles together with the washing water so as not to contact the laundry introduced into the rotary drum; A detergent liquid supply device for passing a predetermined amount of wash water through the water supply pipe to the detergent in the detergent supply device, and generating a detergent liquid, and supplying the generated detergent liquid for the foaming; An air supply device installed at a lower portion of the tank to supply air for bubble generation; And controlling the water supply device and the detergent solution supplying device to supply detergent water mixed with the wash water and the detergent solution to a space between the rotary drum and the water tank, and the detergent water contacts laundry loaded into the rotary drum. In order to prevent the level of detergent water is maintained between the rotating drum and the water tank to control the air supply device to supply the air to the detergent water to generate bubbles between the water tank and the rotating drum, the water tank And a control unit configured to perform washing by introducing bubbles generated between the rotating drum into the rotating drum through the holes of the rotating drum.

In addition, the present invention further comprises a detergent solution supply device for supplying a detergent solution for the foaming, the control unit supplies a predetermined amount of the wash water to the detergent supply device through the water supply pipe, the detergent supply device Dissolving the detergent to produce the detergent liquid in the detergent liquid supply device.

In addition, further comprising a water level detection unit for detecting the water level of the detergent water supplied to the space between the rotating drum and the water tank; The control unit is characterized in that for controlling the level of the detergent water supplied to the space between the rotating drum and the water tank.

In addition, the water level detection unit is characterized in that consisting of a water level sensor for detecting the level of the detergent water between the rotating drum and the water tank.

In addition, the water level detection unit detects a first water level sensor for detecting the first water level so that the water level of the detergent water does not touch the laundry, and the second water level for detecting the water level of the detergent water is the minimum level required for foaming Characterized in that the second water level sensor.

In addition, the water supply device and the detergent liquid supply device further comprises a valve; The controller may be configured to stop the supply of the wash water and the detergent solution from the water supply device and the detergent solution supply device by blocking the respective valves when the water level of the first water level sensor is detected.

In addition, the water supply device and the detergent liquid supply device further comprises a valve; The control unit may open the respective valves to start the supply of the washing water and the detergent solution from the water supply device and the detergent solution supply device when the water level of the second water level sensor is detected.

In addition, the detergent liquid supply device is characterized in that it further comprises a first flow control valve for controlling the flow rate to supply a predetermined amount of detergent liquid.

In addition, the water supply device further comprises a second flow rate control valve for controlling the flow rate of the supplied wash water; The controller may control the first and second flow rate control valves such that the washing water is supplied at a predetermined ratio with the supply flow rate of the detergent liquid.

In addition, the air supply device is installed in the lower portion of the water tank to supply air, an air supply pipe for delivering the air supplied from the air motor, and is installed at the end of the air supply pipe to inject the delivered air Characterized in that consisting of a porous member to.

In addition, the water tank in which the air supply device is installed is characterized in that the air hole for allowing the air from the air supply device is formed.

In addition, the control unit is characterized in that to remove the foam by the intermittent dehydration drive to rotate or stop the rotating drum at a predetermined time interval after the washing using the foam is completed.

In addition, further comprising a drying fan; The control unit is characterized in that to remove the foam by blowing air into the rotating drum by operating the drying fan after the washing using the foam is completed.

In addition, further comprising a drying heater; The control unit is characterized in that to remove the foam by blowing hot air into the rotary drum by operating the drying heater and the drying fan at the same time after the washing using the foam is completed.

In addition, the water supply device is further provided with a water supply nozzle for spraying the wash water in the form of a shower; The control unit is characterized in that to remove the foam by driving the rotary drum dewatering while spraying the washing water in the shower form after the washing using the foam is completed.

Hereinafter, 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 using the foam of the present invention.

In Figure 1, the washing machine using the foam of the present invention is for the fresh water of the wash water, the drum-shaped water tank 11 is installed inside the main body 10, and is rotatably installed in the water tank (11) Rotating drum 12 formed with a plurality of dehydration holes.

The lower part of the tank 11 is provided with a motor 13 for rotating the rotating drum 12 in the forward or reverse direction to perform the washing, rinsing and dehydration operation, and select the user's water temperature in the lower side of the tank 11. Washing heater 16 for heating the wash water supplied into the municipal water tank 11, and the water level detection unit for detecting the amount (water level) of the washing water (specifically, detergent water) supplied to the water tank 11 17 is installed.

The first water level sensor 17 detects the highest washing level (hereinafter referred to as a first water level) such that detergent water does not flow into the rotating drum 12 into which laundry is put in order to wash only with foam. (17-1) and a second water level sensor (17-2) for detecting the minimum washing level (hereinafter referred to as the second water level) required for foaming, the amount of detergent water supplied during washing is the first When the water level is reached, the supply of detergent liquid and wash water is stopped to prevent the inflow of detergent water into the rotating drum 12, and the amount of detergent water gradually decreases due to the foaming to lower the second water level. In order to supply the detergent water again, the detergent solution in the detergent solution supply device 30 is controlled to be supplied to the water tank 11 together with the wash water.

In addition, the water level detection unit 17 controls to maintain the foaming level of the bubble generation without washing water to the laundry through continuous water level detection in addition to the first and second water level, and also controls the flow rate during washing The water level is reduced through time control and controlled to supply the required amount of detergent solution and wash water for foaming at a certain concentration.

An opening 14 is formed in front of the water tank 11 and the rotating drum 12 so that a user can take out clothing from the front of the main body 10, and opens and closes the opening 14 in front of the main body 10. The door 15 is installed.

A detergent supply device 19 for supplying a detergent to the upper portion of the water tank 11, a detergent solution supply device 30 for generating and storing a predetermined amount of detergent solution for generating a certain concentration of foam, the detergent supply device 19 And a water supply device 20 for supplying washing water to the detergent solution supply device 30.

The detergent supply device 19 is divided into a plurality of spaces inside, and is installed on the front side of the main body 10 so that the user can easily put detergent and rinsing agent in each space.

The water supply device 20 has a water supply pipe 22 for supplying the wash water and a water supply valve 24 installed in the water supply pipe 22 to control the water supply of the water supply pipe 22, and the water supply pipe 22 is provided from the outside. It is connected with the detergent supply device 19 so that the water supplied can be supplied toward the detergent supply device 19. In addition, between the detergent supply device 19 and the water tank 11, the wash water passed through the detergent supply device 19 is introduced into the detergent liquid supply device 30 together with the detergent, and the detergent liquid for generating bubbles of a certain concentration (detergent in water). Is in a concentrated state). A separate connection pipe 25 is installed between the detergent solution supply device 30 and the water tank 11 so that the detergent solution generated in the detergent solution supply device 30 can be supplied to the water tank 11. A water supply nozzle 26 is installed at the outlet of the pipe 25. This is because the detergent solution in the detergent solution supply device 30 is supplied to the inside of the water tank 11 together with the wash water to form detergent water for generating a certain concentration of foam between the water tank 11 and the rotary drum 12. will be.

The detergent solution supplying device 30 is insufficient in the detergent water (washing water in which detergent solution is dissolved) due to foaming, when the wash water is additionally supplied through the water supply device 20, the concentration of the foam according to the additional wash water Is connected to the detergent supply unit 19 so that detergent liquid (a state where the detergent is highly concentrated in the washing water) is supplied with additional washing water to prevent the initial bubble concentration from changing. After the production, the detergent solution is to be supplied between the water tank 11 and the rotating drum 12. The detergent supply device 19 is provided on one side of the connection pipe 25 connected to the detergent solution supply device 30. A supply water pipe 31 connected to the water supply pipe 22 so that the washing water is additionally supplied to the water tank 11 without going through it, and a supply water valve installed at the supply water pipe 31 to control the additional supply of washing water to the water tank 11. (32) to the detergent liquid supply device (30) It is provided with a detergent liquid inlet valve 33 for controlling the supply of the generated high concentration detergent liquid in an amount necessary for the foaming of a certain concentration.

The feed water valve 32 is a three-way valve for controlling the direction of the wash water supplied through the water supply pipe 22 toward the detergent supply device 19 or the supply water pipe 31, and the detergent in the detergent supply device 19. A small amount of the detergent supply device 19 at an initial stage of the water supply to dissolve the detergent solution supply device 30 so as to generate a high concentration of detergent solution by dissolving the detergent in the detergent supply device. The wash water is supplied once, and then the water supply direction of the wash water is adjusted such that the wash water is directly supplied to the water tank 11 through the supply water pipe 31 together with the detergent solution generated in the detergent solution supply device 30.

In addition, the present invention includes a drying device 40 for drying the laundry (clothing).

The drying apparatus 40 includes a drying fan 41 installed on the top of the water tank 11, an air inlet 45 formed above the discharge port 41b of the drying fan 41 and the opening 14 of the water tank 11. Condensation mounted on the rear of the water tank 11 to connect between the drying duct 42, the air outlet 46 formed in the rear lower portion of the water tank 11 and the inlet 41a of the drying fan 41 to connect between And a duct 43.

The drying device 40 is a drying heater 44 installed inside the drying duct 42 to supply hot air into the water tank 11, and the condensation duct 43 is wet steam generated by drying the clothes. It includes a condenser installed in the condensation duct 43 so that the water is condensed in the process of passing through.

The condenser is installed on the inner upper portion of the condensation duct 43 and the cooling water injection nozzle 53 for injecting the cooling water into the condensation duct 43 and the water supply device 20 to supply the cooling water to the cooling water injection nozzle 53. Cooling water supply pipe 54 and the cooling water valve 55 is connected to the.

The condenser has a dehumidifying effect by allowing the cooling water injected from the cooling water spray nozzle 53 on the upper portion to flow down to the lower portion along the inner surface of the condensation duct 43 so that the contact of the humid air rising from the lower portion with the cooling water is increased. It is to be improved.

In addition, the present invention is provided with a drainage device 50 for draining the water in the water tank (11). The drainage device 50 includes a drain pipe 51 connected to the lower part of the water tank 11 to guide the water in the water tank 11 to the outside, and a drain pump 52 installed on the water drain pipe 51.

In addition, the washing machine of the present invention is provided with an air supply device 60 to allow the laundry in the rotating drum 12 to be washed by the foam. The air supply device 60 is installed in the lower portion of the water tank 11, the air motor 61 for supplying air, the air supply pipe 62 for delivering the air supplied from the air motor 61, and the air supply pipe ( 62 includes a porous member 63 installed at the end of the air to disperse the supplied air, and the air supplied from the air motor 61 is dispersed while passing through the porous member 63 via the air supply pipe 62. Since bubbles are generated by bubbles in the detergent water mixed with the detergent solution and the washing water, the laundry inside the rotating drum 12 can be washed with only the foam.

In addition, an air hole 64 through which the air from the air supply device 60 flows is formed in the water tank 11 in which the air supply device 60 is installed, and the air dispersed in the porous member 63 is provided in the water tank ( 11) and into the space between the rotating drum (12).

2 is a control configuration diagram of a washing machine washing apparatus according to the present invention, in addition to the apparatus shown in FIG. 1, a signal input unit 100, a temperature sensing unit 110, a drying sensing unit 120, a control unit 130, and a driving unit And 140.

The signal input unit 100 controls the washing course that the user selects according to the type of laundry (for example, foam washing course or general washing course) and operation information such as washing temperature, dehydration rpm, rinse addition, etc. In the foam washing course using the foam, selection information such as foam concentration is input to the controller 130.

The temperature detection unit 110 detects the temperature of the wash water supplied to the water tank 11, the dry detection unit 120 detects the temperature and humidity of the laundry to detect the dry state of the laundry.

The control unit 130 is a microcomputer that controls the washing machine according to the driving information input from the signal input unit 100, and the motor RPM and the driving rate (motor on-off time) set according to the load amount (weight of laundry) in the selected washing course. Saves the laundry time.

Therefore, the controller 130 controls the washing water supply amount and the detergent liquid supply amount together with the generation of bubbles during washing the foam, controlling the motor RPM and the operation rate according to the load amount, and controlling the foam concentration according to the degree of contamination of the laundry. The driving of the motor 13, the water supply device 20, and the detergent solution supply device 30 is controlled to obtain an optimal washing effect while reducing damage.

In addition, the controller 130 controls the motor RPM or controls the operation of the water supply device 20 or the drying device 40 to effectively remove the bubbles after lathering.

The drive unit 140 is a motor 13, a washing heater 16, a water supply valve 23, 24, a feed water valve 32, a detergent liquid input valve 33, in accordance with a drive control signal of the control unit 130, The drying fan 41, the drying heater 44, the drain pump 52, the air motor 61, and the like are driven.

Hereinafter, the operation process and the effect of the washing machine and the laundry control method configured as described above will be described.

The washing control method of the washing machine according to the present invention performs a general washing course for washing general laundry and a laundering course for washing laundry (foam requiring delicate washing, such as wool or silk fabrics), through fragile washing. The signal input unit 100 mentioned above is provided with a button for allowing the controller 130 to perform a bubble washing course.

Figure 3 is a flow chart of the overall operation of the washing control method using foam in the washing machine according to the present invention.

Put the laundry inside the rotating drum 12, and when the user selects the washing course (bubble washing or general washing) and the operation information such as washing temperature, dehydration rpm, and rinsing according to the type of laundry, the driving information selected by the user is displayed. It is input to the controller 130 through the signal input unit 100.

Therefore, the control unit 130 determines whether the washing course selected by the user according to the driving information input from the signal input unit 100 is a foam washing course (S200). Perform (S210).

If the washing course selected by the user is a foam washing course, after detecting the load amount (the weight of the laundry) put into the rotating drum 12 (S300), the washing water quantity, the motor RPM and the operation rate (motor on-off) according to the detected load amount Time), the washing time is set (S400).

Accordingly, the control unit 130 performs the washing stroke by the generation of foam with the set motor RPM and operation rate, the washing time (S500), to effectively remove the foam remaining inside the rotating drum 12 after washing the foam Performs a bubble removing stroke (S600).

Washing operation due to foaming can reduce cloth damage caused by friction of laundry and strong water flow as the foam acts as a cushion during washing of the laundry, and also effectively removes the time when a small amount of water is used due to the high detergent concentration of foam. This can save energy.

As such, after the washing operation is performed according to the foaming and the foam is removed, the rinsing and dehydrating stroke is set according to the load amount (S700).

Hereinafter, a process (S500) of performing a washing stroke according to the foaming which is a technical feature of the present invention will be described with reference to FIG. 4.

4 is a detailed operation flowchart of the washing administration using foam in the washing machine according to the present invention.

When the foam washing course is selected, the controller 130 controls the water supply device 20 so that a small amount of washing water required for dissolving detergent through the water supply valve 24 is passed through the water supply pipe 22 via the detergent supply device 19. It is to be supplied to the detergent solution supply device (30). At this time, the detergent in the detergent supply device 19 is dissolved together by the wash water being fed into the detergent solution supply device 30 and the detergent solution (the detergent is concentrated in the laundry water in the detergent solution supply device 30) State) is generated and stored (S502).

Thereafter, the controller 130 controls the detergent liquid inlet valve 33 to supply the detergent liquid in the detergent liquid supply device 30 to the water tank 11 through the water supply nozzle 26 through the connection pipe 25. And at the same time (S504), by controlling the feed water valve 32, the washing water is not supplied to the detergent supply device 19, but through the feed pipe (31) through the supply pipe (25) while the water tank through the water supply nozzle (26) To be supplied to (11) (S506).

In this way, at the beginning of the water supply, a small amount of washing water (a quantity capable of dissolving the detergent in the detergent supply device to generate a high concentration of detergent liquid) is supplied to the detergent supply device 19 once, and then, the detergent liquid is supplied. Control is performed such that the washing water is supplied through the supply water pipe 31 together with the detergent solution generated in the device 30.

On the other hand, in Figure 4 is shown in order to supply the detergent solution and wash water in order to help the understanding of the invention, the detergent solution and the washing water supply operation is preferably made at the same time.

As the detergent liquid and the washing water are supplied into the water tank 11, a detergent water mixed with the detergent liquid and the washing water is formed between the water tank 11 and the rotating drum 12. 17) Is the first water level detected by the pre-determined level (about 1/4 of the general washing water level to the highest level so that the washing water supplied into the tank does not flow into the rotating drum; the water level detected by the first water level sensor) Determine (S508).

If the detergent level is not the first level, the detergent liquid and the wash water are continuously supplied until the first level is reached. If the detergent level is the first level, the water supply valve 24 and the supply water valve 32 are controlled by the controller 130. ) And the detergent solution inlet valve 33 is turned off to stop supplying the detergent solution and the wash water (S510).

Subsequently, in order to wash the laundry inside the rotating drum 12 by the foam, air is supplied from the air supply device 60 to the detergent water and the washing water mixed with the detergent to generate bubbles (S512), and the washing proceeds ( S514), the method for generating bubbles in the air supply device 60 is the air supplied from the air motor 61 is passed through the porous member 63 through the air supply pipe 62 is dispersed and mixed with the detergent liquid and wash water It is introduced into the detergent water through the air hole 64 to generate bubbles.

Bubbles generated between the water tank 11 and the rotating drum 12 through the air supply device 60 is introduced into the rotating drum 12 through the hole or the front portion of the rotating drum 12, where the rotating drum 12 The foam starting to be injected into the inside is dispersed after the predetermined time (about 3 minutes) inside the rotating drum 12 to wash the laundry inside the rotating drum 12 only with foam.

When such bubbles are generated, it is preferable to use a value equal to or less than the value set for each washing course according to the load RPM, operation rate, and washing time of the rotating drum 12.

As such, when a high detergent concentration of foam dispersed throughout the rotating drum 12 is contained in the laundry, the foam is effectively removed. In this case, the bubble acts as a cushion when the freezing and friction of the laundry are caused by the rotation of the rotating drum 12. It is possible to prevent the cloth from being damaged by friction.

Thereafter, it is determined whether the washing operation due to the foaming is completed (S516). When the washing operation is completed, the process proceeds to S600 for rinsing and dehydration.

On the other hand, if the washing administration is not completed, the amount of detergent water begins to decrease as the washing administration proceeds due to foaming. At this time, the water level of the detergent water being lowered is detected by the water level detecting unit 17 and the second predetermined It is determined whether the water level (water level until the minimum water level required to generate a bubble does not go down the air supply device; the water level detected by the second water level sensor) (S518).

If the detergent level is not the second level, the process proceeds to the washing by the rotation of the rotating drum 12 with foaming until it reaches the second level after being fed back to the S512 level, and if the detergent level is the second level, then to S504. Feedback starts the supply of detergent and wash water by the amount of reduced detergent water.

In detail, the water supply valve 24 and the supply water valve 32 are opened according to the operation of the water supply device 20, and the washing water is connected to the connection pipe 25 through the supply water pipe 31 without passing through the detergent supply device 19. The washing water is additionally supplied to the water tank 11 through the water supply nozzle 26 while passing through). At the same time, the detergent liquid inlet valve 33 is opened and a high concentration of the detergent liquid generated in the detergent liquid supply device 30 is supplied together to the water tank 11.

This is because if the washing water is supplied without detergent supply due to the lack of detergent water due to the foaming, the concentration of the foam is lowered, so that it is difficult to generate a certain concentration of foam. It is to commit together.

The amount injected from the detergent liquid supply device 30 is such that when 1drop of the detergent liquid having a certain concentration flows into the water tank 11, the washing water is also supplied in proportion to the water. For example, if the number of detergents required by the water tank 11 is 10, 1 drop of detergent liquid and the washing water proportional to it flow together, and if the number of detergents required is 20, 2 drops of detergent liquid and twice the washing water proportional to it flow together. To control it.

In this way, by adding a certain amount of detergent liquid with additional wash water to ensure that the foam is always effective foaming at a constant concentration.

The results of the washing operation by the foam of the present invention is shown in Figures 5 and 6.

Figure 5 is a graph showing the shrinkage of the laundry when washing with the same concentration and washing the water reduced only in the washing stroke.

In Figure 5, the existing wool is RPM 25, operating rate 1 second ON 78 seconds OFF, washing time 10 minutes shows the shrinkage when the washing process proceeds, foam 1 is the same as the existing wool RPM 25, operating rate 1 second ON Shrinkage rate is shown when washing process is performed for 10 minutes at 78 seconds, and washing time is 10 seconds. Foam 2 has different operation rate from existing wool, RPM 25, operation rate is 2 seconds ON, 78 seconds OFF, washing time is 10 minutes. When the shrinkage is shown.

As can be seen in Figure 5, in the case of foam 1 it can be seen that the shrinkage of the laundry significantly reduced compared to the existing wool, even in the case of foam 2 was reduced the shrinkage of the laundry despite the increase in the operating rate compared to the existing wool can confirm.

FIG. 6 is a graph comparing cleanliness of 60MU (Make Up) artificial pollutants with the same concentration of detergent water and foam immersion, showing reflectance (%) at the same concentration of detergent (2g, 4g, 10g). .

As can be seen in Figure 6, it can be seen that the washing degree of the washing administration by the foam is significantly higher than the washing degree of the washing administration by the general detergent water.

Next, a process (S600) for removing the foam remaining in the rotating drum 12 after washing using the foam will be described with reference to FIGS. 7 to 9.

7 is a detailed operation flowchart of the first stroke for removing the foam after washing the foam in the washing machine according to the present invention, after the washing stroke by the foam is completed and drained the detergent water immediately rotating drum without entering the rinsing stroke A defoaming stroke is carried out to remove the remaining bubbles in (12).

After washing and draining by foaming, bubbles are removed by intermittent dehydration driving the motor 13 at a low RPM (eg, about 400 RPM) (S602).

When the time for driving the motor 13 at a low RPM is countered and a predetermined intermittent dehydration time T1 (minimum time for removing bubbles by intermittent dehydration in the rotating drum) is passed (S604), the motor 13 The driving is stopped (S606).

8 is a detailed operation flowchart of the second stroke for removing the foam after washing the foam in the washing machine according to the present invention, after the washing stroke by the foam is completed and drained the detergent water, the drum does not immediately enter the rinsing stroke A defoaming stroke is carried out to remove the remaining bubbles in (12).

When the air is blown out by the washing drainage due to the foaming or at the same time as the washing drainage, the drying heater 44 is driven to supply the hot air to remove the foam (S612).

When the driving time of the drying fan 41 or the drying heater 44 is countered, and the predetermined driving time (T2; minimum time for removing the bubbles in the rotating drum by air blowing or hot air) passes (S614), the drying fan 41 or the driving of the drying heater 44 is stopped (S616).

9 is a detailed operation flowchart of a third stroke for removing the foam after washing the foam in the washing machine according to the present invention, after the washing stroke by the foam is completed and drained the detergent water, the drum does not enter the rinsing stroke immediately A defoaming stroke is carried out to remove the remaining bubbles in (12).

While supplying the low speed RPM driving of the motor 13 and the driving of the drying fan 41 or the drying heater 44, respectively, the water supply device 20 is controlled to supply water between the rotating drum 12 and the water tank 11. A small amount of washing water is sprayed through the nozzle 26 in the form of a mist (shower) to remove bubbles (S622).

When the washing water spraying time is countered and a predetermined spraying time T3 (time for removing bubbles in the rotating drum by mist spraying) has elapsed (S624), the spraying is stopped (S626) and the foam removing stroke is completed.

As described above, according to the washing machine and the washing control method thereof according to the present invention, the laundry does not directly contact the water, and the washing can be performed only with foam, so that the foam serves as a cushion to reduce friction between the laundry, Or silk fabrics) can prevent the cloth from being damaged by friction and strong water flow of the laundry, it is possible to effectively remove the dirt with a high detergent concentration of foam.

In addition, the use of a small amount of water can reduce the water consumption, save energy for the temperature rise of the wash water, there is an effect that can prevent the damage and deformation of the laundry even in the laundry laundry.

In addition, when washing the foam can adjust the water supply and detergent input amount can generate a certain concentration of foam, and because it can generate a foam of the appropriate concentration according to the degree of contamination of the laundry, it is possible to obtain high cleaning power in general washing as well as fine washing.

Claims (29)

In the control method of the washing machine to perform the washing using foam, Passing a predetermined amount of wash water through the detergent in the detergent supply device, and supplying the predetermined amount of the wash water and the detergent to the detergent liquid supply device to generate a detergent liquid; The detergent liquid and the washing water are supplied into the space between the water tank and the rotating drum, and the level of the detergent water mixed with the detergent liquid and the washing water is previously set between the water tank and the rotating drum so as not to contact the laundry put into the rotating drum. Supplying the detergent liquid and the wash water so as to be supplied up to a set first level; When the level of the detergent water reaches the first level, the supply of the detergent liquid and the wash water is stopped, and air is supplied to the detergent water through an air supply pipe to generate bubbles between the water tank and the rotating drum. ; Bubbles generated between the water tank and the rotating drum are introduced into the rotating drum through the holes of the rotating drum; Performing a laundry administration for washing laundry in the rotating drum by using the foam filled in the rotating drum; As the washing process proceeds, it is determined whether the level of the detergent water reaches a second level set lower than the first level, and when the level of the detergent water reaches the second level, the detergent liquid and the wash water. Washing control method of the washing machine to supply. delete delete delete delete delete The method of claim 1, Washing control method of the washing machine, characterized in that for supplying a predetermined amount of detergent liquid to the space between the rotating drum and the water tank so that the concentration of the detergent water. The method of claim 1, Washing control method of the washing machine, characterized in that for controlling the concentration of the detergent water is supplied to the space between the rotating drum and the water tank in a predetermined ratio and the supply amount of the detergent liquid. The method of claim 7, wherein The washing control method of the washing machine, characterized in that to control the amount of wash water supplied by stopping the supply of the wash water when the water level of the detergent water reaches the first level so as not to touch the laundry. The method of claim 1, If the detergent water is above the bubble generation water washing control method of a washing machine characterized in that to spray the air to the detergent water to generate bubbles. The method of claim 10, Washing control method of the washing machine characterized in that to drive the rotating drum in which the laundry is introduced when the foam is generated. The method of claim 1, Washing control method of the washing machine further comprising the step of removing the foam remaining in the laundry after performing the washing using the foam. The method of claim 12, Removing the bubbles, Removing the bubbles by intermittent dehydration to rotate or stop the rotating drum at regular intervals after washing drainage; Blowing bubbles after drying or at the same time as washing drain to remove bubbles; and Removing water by washing a predetermined amount of water after washing drainage; Washing control method for a washing machine, characterized in that at least one. The method of claim 13, Washing control method of the washing machine, characterized in that for supplying hot air by operating a drying heater when blowing air to the drying fan. In the washing machine having a rotating drum and a water tank in which the laundry is put, washing using foam, A water supply device controlling a supply of wash water through a water supply valve; A detergent supply device receiving the washing water through a water supply pipe and supplying a detergent necessary for generating bubbles together with the washing water so as not to contact the laundry introduced into the rotary drum; A detergent liquid supply device for passing a predetermined amount of wash water through the water supply pipe to the detergent in the detergent supply device, and generating a detergent liquid, and supplying the generated detergent liquid for the foaming; An air supply device installed at a lower portion of the tank to supply air for bubble generation; And The water supply apparatus and the detergent solution supply device are controlled to supply detergent water mixed with the wash water and the detergent solution to a space between the rotary drum and the water tank, and the detergent water does not contact laundry loaded in the rotary drum. The air supply device is controlled so that the level of the detergent water is maintained between the rotary drum and the water tank so that the air is supplied to the detergent water to generate bubbles between the water tank and the rotary drum. And a controller configured to perform washing by introducing bubbles generated between the rotating drums into the rotating drums through the holes of the rotating drums. delete The method of claim 15, It further comprises a water level detection unit for detecting the water level of the detergent water supplied to the space between the rotating drum and the water tank; The control unit is characterized in that for controlling the level of the detergent water supplied to the space between the rotating drum and the water tank. The method of claim 17, And a water level sensor configured to detect a level of the detergent water between the rotating drum and the water tank. The method of claim 17, The water level detection unit includes a first water level sensor for detecting a first water level so that the water level of the detergent water does not touch the laundry, and a second water level for detecting the second water level where the water level of the detergent water becomes the minimum level required for foaming. Washing machine comprising a water level sensor. The method of claim 19, The water supply device and the detergent liquid supply device each further include a valve; The control unit is characterized in that when the water level of the first water level sensor is detected by blocking the respective valves to stop the supply of the wash water and the detergent solution from the water supply device and the detergent solution supply device. The method of claim 19, The water supply device and the detergent liquid supply device each further include a valve; And the control unit opens the respective valves to start the supply of the washing water and the detergent liquid from the water supply device and the detergent liquid supply device when the water level of the second water level sensor is detected. The method of claim 16, The detergent solution supply device further comprises a first flow rate control valve for controlling the flow rate to supply a predetermined amount of detergent solution. 23. The method of claim 22, The water supply device further includes a second flow rate control valve for controlling the flow rate of the wash water supplied; And the control unit controls the first and second flow rate control valves so that the washing water is supplied at a predetermined ratio with the supply flow rate of the detergent liquid. The method of claim 15, The air supply device is installed in the lower portion of the water tank for supplying air, the air supply pipe for delivering the air supplied from the air motor, and the porous pore installed in the end of the air supply pipe to inject the delivered air Washing machine comprising a member. The method of claim 24, Washing machine, characterized in that the air hole for allowing the air from the air supply device is formed in the tank in which the air supply device is installed. The method of claim 15, The control unit is a washing machine characterized in that to remove the foam by the intermittent dehydration drive to rotate or stop the rotating drum at a predetermined time interval after the washing using the foam is completed. The method of claim 15, Further comprising a drying fan; The control unit is a washing machine, characterized in that to remove the foam by blowing air into the rotary drum by operating the drying fan after the washing using the foam is completed. 28. The method of claim 27, Further comprising a drying heater; The control unit is a washing machine, characterized in that to remove the foam by blowing the hot air into the rotary drum by operating the drying heater and the drying fan at the same time after the washing using the foam is completed. The method of claim 15, The water supply device further comprises a water supply nozzle to spray the wash water in the form of a shower; The control unit is a washing machine, characterized in that to remove the foam by driving the rotary drum dewatering while spraying the washing water in the shower form after the washing using the foam is completed.

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