KR20180034154A - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine. The washing machine comprises: a water supply portion supplying wash water; a dissolving portion which mixes internal air and water which is supplied to dissolve air stored in water supplied from the water supply portion and in which air is stored therein; a bubble generating portion in which water in which air is dissolved inflows from the dissolving portion to generate bubbles; a drain valve which is capable of discharging water mixed with air remaining in the dissolving portion to the outside of the dissolving portion and which is provided at the dissolving portion; and a control portion controlling the water supply portion and the drain valve and blocking the inflow of water in which air supplied to the bubble generating portion is dissolved.

Description

Washing machine {WASHING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing machine used for washing laundry by generating bubbles during washing or rinsing.

Generally, a washing machine generally rinses laundry by friction between water and laundry by rotation of a pulsator installed inside the washing tub. Specifically, a large number of perforations are formed in the outer circumferential surface of the washing tub located inside the tub, so that the water introduced into the tub flows into the tub, or water in the tub is discharged to the tub. That is, during washing, rinsing, and dewatering, the water in the tub is discharged to the outside of the tub through the drain line provided at the bottom of the tub.

Accordingly, the laundry contained in the washing tub is washed by the rotation of the washing water stored in the tub and the washing tub by the rotation of the pulsator, and by the contact of the laundry.

However, when the detergent or foreign matter remaining on the surface of the laundry remains in the laundry, there is a problem that the wearer repeatedly wears such clothes to cause skin irritation such as atopy.

In order to prevent this, a variety of techniques for supplying the washing water to the surface in a minute size have been applied. However, there is a problem that a separate device such as a pump for generating washing water in a minute size is installed. In such a case, noise due to the driving of the pump and maintenance work due to repetitive use thereof are difficult.

An embodiment of the present invention provides a washing machine for supplying bubbles to remove detergent or foreign substances remaining in laundry from laundry.

According to an embodiment of the present invention, a washing machine includes a water supply unit for supplying washing water, a dissolving unit for mixing air supplied from the water supply unit and water supplied from the water supply unit, A bubble generating unit for generating bubbles by flowing water dissolved in air from the dissolving unit; a drain valve installed at the dissolving unit and capable of discharging water mixed with air remaining in the dissolving unit to the outside of the dissolving unit; And a controller for controlling the water supply unit and the drain valve to block the inflow of the dissolved water supplied to the bubble generator.

The washing machine may further include a water level sensor provided in the dissolving unit and detecting the water level inside the dissolving unit and providing information detected by the controller.

In addition, when the information detected by the water level sensor is equal to or greater than a predetermined first level information value, the controller may cut off the supply of wash water to the water supply unit and open the drain valve.

The control unit may close the drain valve when the information detected by the water level sensor is less than a predetermined second level information value after the drain valve is opened.

Further, the control unit may close the drain valve after a predetermined time after the drain valve is opened.

An outer body having one side opened and a hollow interior; an inner body having one side opened and an outer circumferential surface separated from the inner circumferential surface of the outer body so as to form a solution flow path; A dissolving cap coupled to one side of the body and having a dissolving inlet formed therein to supply water supplied from the outside to the inside of the inner body; A dissolution guide for guiding a water to the bubble generator, and a dissolution drain disposed at the outer body and spaced apart from the dissolution guide.

The dissolving unit may further include an inner hole formed on the other side of the inner body and communicating with the dissolving channel.

The dissolving unit may further include an air supply check valve installed in the dissolving cap and opened when the water is discharged through the dissolving drain port to allow air to flow into the outer body and the inner body.

The above-described washing machine may further include a housing, a tub installed inside the housing to supply bubbles generated by the bubble generator, and a washing machine installed in the tub to receive laundry.

Further, the dissolving unit may be disposed between the housing and the tub, and may be disposed adjacent to a lower portion of the tub than an upper portion of the tub.

According to another aspect of the present invention, there is provided a washing machine comprising: a housing; a washing tub disposed inside the housing; a washing tub disposed inside the tub to receive laundry; a water supply unit for supplying washing water; A dissolving unit for mixing the supplied air with the internal air so that the air stored in the water supplied from the water supply unit is dissolved and the water dissolving the air from the dissolving unit to generate bubbles, A drain valve installed at the dissolving unit and capable of discharging water mixed with air remaining in the dissolving unit to the outside of the dissolving unit; and a controller for controlling the water supply unit when stopping the supply of the bubbles to the tube, The supply of the washing water is interrupted and the drain valve is controlled to be opened so that the water mixed with the air remaining in the dissolution part And discharging it to the outside of the dissolution part.

The control unit may close the drain valve when it is determined that the water mixed with the air remaining in the dissolving unit has been discharged.

According to the embodiments of the present invention, the washing machine supplies a permeable bubble to the laundry to reduce the surface tension between the laundry and detergent remaining in the laundry, thereby effectively removing the detergent or foreign matter remaining in the laundry.

1 is a view illustrating a washing machine according to an embodiment of the present invention.
Fig. 2 is a perspective view of the dissolving unit and the tub of Fig. 1. Fig.
Fig. 3 is a diagram showing the configuration of the washing machine of the present invention.
4 is a cross-sectional view of the dissolving portion and the bubble generating portion of Fig. 1;
Fig. 5 is an exploded perspective view of the dissolving portion of Fig. 1;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures are exaggerated or reduced in size for clarity and convenience in the figures, and any dimensions are merely illustrative and not restrictive. And to the same structural elements or parts appearing in more than one drawing, the same reference numerals are used to denote similar features.

The embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various variations of the illustration are expected. Thus, the embodiment is not limited to any particular form of the depicted area, but includes modifications of the form, for example, by manufacture.

Hereinafter, a washing machine 101 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

1 to 3, a washing machine 101 according to an embodiment of the present invention includes a water supply unit 130, a dissolving unit 300, a bubble generator 400 and a drain valve 900, And a control unit 700.

The water supply unit 130 supplies the wash water. Specifically, the washing water stored in the washing machine 101 or the outside can be supplied from the washing water supply source.

The dissolving unit 300 stores air therein. In addition, water is supplied from the water supply unit 130 into the dissolving unit 300. And the water supplied into the dissolving unit 300 is mixed with the stored air so that the stored air is dissolved in the supplied water.

Specifically, the washing machine 101 includes a housing 100, a tub 200, a washing tub 250, a pulsator 260, and a driving unit 270.

The housing 100 forms an appearance of the washing machine 101. The tub 200 is disposed inside the housing 100 to store washing water. The washing tub 250 is disposed inside the tub 200 to receive the laundry. The pulsator 260 is disposed below the inside of the washing tub 250 to generate a water flow inside the washing tub 250. The driving unit 270 is installed at a lower portion of the housing 100 and provides power to rotate the pulsator 260 and the washing tub 250.

That is, the dissolving unit 300 is disposed between the tub 200 and the housing 100, as shown in FIG. More specifically, the dissolving unit 300 is arranged to be relatively adjacent to the lower part of the tub 200 than the upper part of the tub 200, and when the upper part of the housing 100 and the tub 200 are supported by the suspension unit Can be effectively installed without interference according to their installation positions. In other words, the dissolving unit 300 is disposed relatively adjacent to the lower portion of the tub 200 than the upper portion of the tub 200, so that the space between the narrow housing 100 and the tub 200, Can be installed without interfering with the degree of freedom of installation.

The bubble generator 400 receives the dissolved water from the dissolution part 300 to generate bubbles. 4, the bubble generator 400 includes a bubble body 410 including a bubble inlet 411 formed at one side and a bubble outlet 412 formed at the other side, A bubble nozzle 420 having a bubble passage 421 disposed inside the bubble inlet 411 to generate bubbles with a larger inner diameter from the bubble inlet 411 to the bubble outlet 412, A reduced pressure region 440 disposed between the bubble discharge ports 412 and reducing the pressure of bubbles generated through the bubble nozzle 420 and a reduced pressure region 440 disposed between the bubble inlet 411 and the bubble nozzle 420, And a bubble check valve 430 for guiding the dissolved water from the bubble inlet 411 to the bubble nozzle 420.

The water level sensor 190 detects the water level inside the dissolving unit 300. Specifically, the water level sensor 190 may be installed inside the dissolving unit 300 to detect the water level stored in the dissolving unit 300.

The drain valve 900 is capable of discharging air and dissolved water stored in the dissolving unit 300 to the outside of the dissolving unit 300. Further, the drain valve 900 may be installed in the dissolving unit 300. Specifically, the drain valve 900 can discharge the air remaining in the dissolving unit 300 and the dissolved water to the outside of the dissolving unit 300 without being supplied to the bubble generating unit 400.

For example, the drain valve 900 may be configured to drain air remaining in the dissolving unit 300 and dissolved water using the drain line 210 installed at the lower portion of the tub 200 storing the wash water. Alternatively, the drain valve 900 may be installed inside the pipe connecting the dissolving unit 300 and the drain line 210.

The control unit 700 determines the bubble generation state of the bubble generator 400 according to the information detected by the water level sensor 190. Specifically, the controller 700 can calculate the amount of air stored in the dissolving unit 300 based on the water level inside the dissolving unit 300 detected by the water level sensor 190. The control unit 700 can determine whether the bubble generator 400 can effectively generate bubbles by dissolving the air stored in the dissolving unit 300 in the supplied water.

The control unit 700 selectively controls the drain valve 900 and the water supply unit 130. For example, the drain valve 900 may include a variety of valves, such as an electronic control valve, a solenoid valve, and an on-off valve controlled by the control unit 700, for discharging air remaining in the dissolving unit 300 and dissolved water Or < / RTI >

Accordingly, the controller 700 can control the amount of air in the dissolving unit 300 so that the bubble generator 400 can effectively generate bubbles.

In addition, the control unit 700 can cut off the supply of the washing water from the water supply unit 130 when the information detected by the water level sensor 190 is equal to or greater than the preset first level information value. At this time, the controller 700 may open the drain valve 900.

The first level information value may be preset in the control unit 700. [ When the level of the dissolution part 300 detected by the water level sensor 190 is equal to or greater than the first water level information value, the controller 700 controls the bubble generator 400 to supply the dissolved water required for bubble generation It is possible to determine that the air stored in the present dissolving unit 300 is less soluble than the water currently supplied to the dissolving unit 300 and can not effectively dissolve the stored air in the supplied water.

That is, when the level of the dissolving unit 300 detected by the water level sensor 190 is equal to or greater than the first water level information value, the controller 700 can determine that the air is to be filled in the present dissolving unit 300. Accordingly, the control unit 700 blocks the supply of the washing water from the water supply unit 130 to the dissolving unit 300 and opens the drain valve 900. At this time, the water stored in the dissolving unit 300 by the opened drain valve 900 is discharged to the outside of the dissolving unit 300 instead of being supplied to the bubble generating unit 400.

Also, the controller 700 of the washing machine 101 according to an embodiment of the present invention can compare whether the information detected by the water level sensor 190 is less than a predetermined second level information value.

The second level information value may be preset in the control unit 700. [ The second water level information value is a value relatively lower than the first water level information value and is a value that enables the controller 700 to determine whether the water remaining in the dissolving unit 300 is discharged to the outside of the dissolving unit 300 .

When the information detected by the water level sensor 190 is less than the predetermined second level information value after the drain valve 900 is opened, the controller 700 controls the water level of the water remaining in the dissolving unit 300 to be discharged to the outside of the dissolving unit 300 It can be judged that it has been discharged. At this time, the controller 700 may close the drain valve 900.

Alternatively, the control unit 700 of the washing machine 101 according to another embodiment of the present invention may close the drain valve 900 after a predetermined time period after the drain valve 900 is opened.

The control unit 700 may be provided with a time required for discharging the water stored in the dissolving unit 300 to the outside. Specifically, the controller 700 may receive time information from a timer or the like that counts time, and may control the drain valve 900 to be closed.

That is, the controller 700 may control the drain valve 900 to be closed after a predetermined time after the drain valve 900 is opened.

4 and 5, the dissolving unit 300 of the washing machine 101 according to an embodiment of the present invention includes an outer body 310, an inner body 320, a dissolving cap 330, A dissolution guide 311, and a dissolution drain 312. The dissolution guide 311 may be any of a variety of materials.

The outer body 310 may have a hollow interior. In addition, the outer body 310 is formed by opening one side. The other side of the outer body 310 may be formed in a hemispherical shape. That is, the cross-section of the outer body 310 may be formed in a "U" shape.

A dissolution water inlet 331 is formed in the dissolution cap 330 to allow water supplied from the water supply unit 130 to pass therethrough. In addition, the dissolution cap 330 may be formed in a hemispherical shape, and the dissolution water inlet 331 may be formed in the highest region of the dissolution cap 330.

In addition, the dissolving cap 330 may be engaged with an open side of the outer body 310. Accordingly, the air can be efficiently stored in a region where the dissolving cap 330 and the outer body 310 are partitioned.

The inner body 320 may be formed by opening one side. In addition, the other side of the inner body 320 may be formed in a hemispherical shape. The inner body 320 may be disposed inside the outer body 310. That is, the outer circumferential surface of the inner body 320 and the inner circumferential surface of the outer body 310 may be spaced from each other to form a dissolving path.

One side of the inner body 320 may be hooked on one side of the outer body 310. Specifically, one end of the inner body 320 may be hooked to an open side of the outer body 310. That is, one area on one side of the inner body 320 may be formed larger than the other area of the inner body 320 and may be hooked on one side of the opened side of the outer body 310, A dissolution passage may be formed between the outer circumferential surface and the inner circumferential surface of the outer body 310. In other words, one side of the outer body 310 may be coupled to the dissolving cap 330 and also support the inner body 320.

The porous body 321 may be formed on one side of the inner body 320. The porous portion 321 may guide water flowing into the inner body 320 through the dissolution inlet 331 along the longitudinal direction of the inner body 320 and overflowing into the dissolving channel. Accordingly, the air stored in the dissolving unit 300 is moved along the inner body 320, the porous body 321, and the dissolving channel by the water supply pressure of the water supplied into the dissolving unit 300 through the dissolving inlet 331 And can be dissolved in the mixed water supplied.

The dissolution guide 311 may be formed in the outer body 310. In addition, the dissolution guide 311 may guide the dissolved water in the dissolution part 300 to be supplied to the bubble generation part 400. Specifically, the dissolution guide 311 may protrude in the circumferential direction on the other side of the outer body 310.

For example, the dissolution guide 311 may be connected to the bubble inlet 411 to guide the dissolved water to the bubble generator 400.

The dissolution drain 312 may be formed in the outer body 310. Further, the dissolution drain port 312 may be spaced apart from the dissolution guide 311. [ A drain valve 900 may be installed in the dissolution drain port 312. Accordingly, the drain valve 900 can open and close the dissolution drain port 312 to allow the water stored in the dissolution section 300 to be discharged to the outside of the dissolution section 300.

The dissolving unit 300 of the washing machine 101 according to an embodiment of the present invention may further include an inner hole 322 as shown in FIG.

The inner hole 322 may be formed on the other side of the inner body 320. Specifically, the inner hole 322 may be formed on the lowest surface of the hemispherical inner body 320. The inner hole 322 may be formed to have a minute area to prevent water supplied from the water supply unit 130 from being supplied to the inner body 320 and then discharged directly into the dissolving channel.

That is, when the water supply part 130 cuts off the supply of water to the inside of the dissolving unit 300, the water stored in the inner body 320 flows into the dissolving drain hole 312 through the dissolving channel, As shown in FIG.

In addition, the dissolving unit 300 of the washing machine 101 according to an embodiment of the present invention may further include an air supply check valve 340.

The supply check valve 340 may be installed in the dissolving cap 330. The supply check valve 340 may be selectively opened according to the pressure inside the dissolving unit 300 to allow external air to flow into the dissolving unit 300. Specifically, the air supply check valve 340 may be spaced apart from the dissolution inlet 331 in the dissolution cap 330.

The pressure inside the dissolving unit 300 may be lowered when the water remaining in the dissolving unit 300 is discharged to the outside of the dissolving unit 300 through the dissolving drainage hole 312. At this time, as the water inside the dissolving unit 300 is discharged, the pressure inside the dissolving unit 300 is lowered according to the lowered water level, and the air supply check valve 340 is opened to allow the outside air to flow into the dissolving unit 300 can do.

In addition, as the water in the dissolving unit 300 is discharged through the dissolving / discharging port 312, the air introduced from the outside through the supply check valve 340 is discharged through the dissolving / discharging port 312 It can be guided to be discharged more effectively.

After the drain valve 900 is closed so that the discharge of the water is stopped through the dissolution drain port 312, the supply check valve 340 is filled with air inside the dissolution part 300 so that the internal pressure of the dissolution part 300 is constant If it is abnormal, it is closed. That is, the supply check valve 340 can prevent the air inside the dissolving unit 300 from being discharged to the outside of the dissolving unit 300 when the pressure inside the dissolving unit 300 is higher than a certain level.

The washing machine 101 may further include a housing 100, a tub 200, and a washing tub 250, as shown in FIG.

The housing 100 forms the outer shape of the washing machine 101. The tub 200 may store laundry water necessary for washing laundry such as clothes. In addition, the tub 200 is disposed inside the housing 100.

The washing tub 250 accommodates laundry such as clothes. Further, the washing tub 250 is installed inside the tub 200.

The dissolving unit 300 of the washing machine 101 according to an embodiment of the present invention is disposed between the housing 100 and the tub 200 as shown in FIG.

The dissolving unit 300 is disposed between the housing 200 and the tub 200 separated from the housing 100. Specifically, the dissolving unit 300 includes a washing tub 250 installed in a lower portion of the tub 200 or a driving unit installed in the washing tub 250 to drive a pulsator 260 forming a water stream in the washing tub 250 270 adjacent to each other. That is, the dissolving unit 300 is disposed adjacent to the lower portion of the tub 200 rather than the opened upper portion of the tub 200, so that the tub 200 is not interfered with the housing 100 when the tub 200 is supported by the housing 100, So that it can be installed without restriction.

The washing machine 101 according to an embodiment of the present invention includes a housing 100, a tub 200, a washing tub 250, a water supply unit 130, a dissolving unit 300, a bubble generator 400, A valve 900, and a control unit 700.

The housing 100 forms the appearance of the washing machine. The tub 200 is installed inside the housing 100 to store washing water required for washing laundry such as clothes. The washing tub 250 is disposed inside the tub 200 to receive clothes such as clothes.

The water supply unit 130 supplies washing water necessary for washing laundry. For example, the water supply unit 130 may supply the washing water to the tub 200 and the dissolving unit 300 while branching the wash water.

Air is stored in the dissolving unit 300 and water is supplied from the water supplying unit 130 to dissolve the air stored in the dissolving unit 300 and the supplied water. Specifically, the air stored in the dissolving unit 300 is mixed by the movement of the water supplied from the water supplying unit 130.

The bubble generator 400 is installed inside the housing 100. In addition, the bubble generator 400 generates bubbles from the dissolved water, which is supplied from the dissolving unit 300, and supplies the generated bubbles to the tub 200. Therefore, the water supplied to the tub 200 contains bubbles.

The drain valve 900 is installed in the dissolving unit 300 so that water mixed with air remaining in the dissolving unit 300 can be discharged to the outside. Specifically, the water mixed with the air discharged to the outside of the dissolving unit 300 through the drain valve 900 may be discharged to the outside of the washing machine 101 through the drain line 210. Further, the drain valve 900 is controlled by the controller 700.

The control unit 700 determines that the supply of the washing water and the bubbles necessary for washing the laundry stored in the washing tub 250 is completed by the tub 200 according to a predetermined washing process. At this time, the control unit 700 stops supplying the bubbles to the tub 200. Specifically, the control unit 700 controls the water supply unit 130 to cut off the supply of the washing water supplied to the dissolving unit 300. In addition, the controller 700 opens the drain valve 900 so that the water mixed with the remaining air in the dissolving unit 300 is discharged.

Accordingly, the controller 700 can effectively prevent contamination of the inside of the dissolving unit 300 or winter waves of the dissolving unit 300, which may occur when water mixed with air exists in the dissolving unit 300.

The control unit 700 of the washing machine 101 according to an embodiment of the present invention determines that the water mixed with the air remaining in the dissolving unit 300 is discharged from the dissolving unit 300, (900) can be closed.

The controller 700 controls the amount of water mixed with the air remaining in the dissolving unit 300 through a predetermined time or a separate detecting means such as a water level sensor inside the dissolving unit 300, It is possible to judge completion of the discharge of the water mixed with the remaining air. That is, when the control unit 700 determines that the discharge of the mixed water with the air remaining in the dissolving unit 300 is completed, the drain valve 900 can be closed.

With such a configuration, the washing machine 101 can effectively prevent the water mixed with the air remaining in the dissolving unit 300 from freezing in winter and breaking the dissolving unit 300.

Hereinafter, the operation of the washing machine 101 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

1 and 2, the washing machine 101 includes a tub 200 for storing washing water and a washing machine 200 installed below the tub 200 to discharge washing water stored in the tub 200 to the outside A drain line 210, and a supply nozzle 220 that is capable of supplying wash water into the tub 200.

Water is supplied into the dissolution part 300 through the dissolution inlet 331 of the dissolution part 300 through the water supply part. The water supplied into the dissolving unit 300 moves along the inside of the dissolving unit 300 so that the air stored in the dissolving unit 300 dissolves in water. Specifically, the water introduced through the dissolution inlet 331 flows into the interior of the inner body 320 and is stored inside the hollow body of the inner body 320. At this time, water continuously supplied through the dissolution inlet 331 and water stored inside the hollow body of the inner body 320 collide with each other and move along the inner wall of the inner body 320, And flows into the dissolving channel between the inner peripheral surface of the outer body 310 and the outer peripheral surface of the inner body 320 through the pores 321 formed in one region of the inner body 320 adjacent to the opened one side of the inner body 320.

The water flowing into the dissolving unit 300 moves along the dissolving channel between the inner body 320 and the inner body 320 and the outer body 310 and the dissolving unit 300 is rotated without a separate pump or agitator. The air can be effectively mixed with the air stored in the interior of the water inlet port 331 to dissolve air into the water introduced into the water inlet port 331.

The water overflowed into the dissolving channel is mixed with air previously stored in the dissolving unit 300, and air is dissolved in the water and supplied to the bubble generating unit 400 through the dissolution guide 311.

The water in which the air supplied through the bubble inlet 411 is dissolved passes through the bubble passage 421 of the bubble nozzle 420 and the air contained in the water in which the air is dissolved is deaerated to generate a bubble. The generated bubbles may be discharged to the outside of the bubble generator 400 through the bubble outlet 412 and supplied to the tub 200 through the supply nozzle 220.

Thus, the bubbles supplied to the tub 200 can reduce the surface tension between the residual detergent and the foreign matter on the surface of the laundry, thereby effectively washing the laundry.

When water is supplied from the water supply unit 130 to the dissolution unit 300, water is stored in the dissolution unit 300.

The water level sensor 190 detects the water level inside the dissolving unit 300 and transmits this information to the control unit 700. At this time, the controller 700 can control the water supply unit 130 and the drain valve 900 according to the internal level of the dissolving unit 300 detected by the water level sensor 190.

When the information detected by the water level sensor 190 is equal to or greater than the preset first water level information value, the controller 700 may determine that air is required to be filled into the dissolving unit 300. At this time, the controller 700 disables the water supply unit 130 from supplying the washing water into the dissolving unit 300. The control unit 700 opens the drain valve 900 to allow the water stored in the dissolving unit 300 to be drained to the drain line 210 through the dissolution drain port 312.

That is, when the information detected by the water level sensor 190 is equal to or greater than the preset first water level information value, it is determined that bubbles can not be effectively generated by the bubble generator 400 as air remaining in the dissolver 300, The drain valve 900 may be opened to discharge the water stored in the dissection 300 to the drain line 210 through the dissolution drain port 312.

When the information detected by the water level sensor 190 is less than the predetermined first level information value, the controller 700 determines that the air remaining in the dissolving unit 300 is dissolved in the water supplied from the water supplying unit 130, It can be determined that the generation unit 400 can effectively generate bubbles.

The water remaining in the dissolving unit 300 is discharged to the drain line 210 through the dissolving drain port 312 by the drain valve 900 opened by the control unit 700, The water level is lowered. Then, the pressure inside the dissolving unit 300 is lowered, and the air supply check valve 340 is opened to allow the outside air to flow into the dissolving unit 300.

Due to the opening of the air supply check valve 340, the air introduced into the dissolving unit 300 can more effectively discharge the water discharged to the dissolving drain port 312.

 If the information detected by the predetermined time or the water level sensor 190 is less than the second water level information value, the control unit 700 determines that all the remaining water in the dissolving unit 300 has been discharged through the dissolution drain port 312 .

At this time, the controller 700 closes the drain valve 900.

The air supply check valve 340 may be closed when the air exceeding a predetermined pressure is filled in the dissolving unit 300 to block the inflow of air into the dissolving unit 300.

Then, the control unit 700 controls the water supply unit 130 to supply the water to the dissolution unit 300 again.

With such a structure, the washing machine 101 according to an embodiment of the present invention effectively generates bubbles and effectively removes foreign matter or remaining detergent attached to the surface of the laundry when washing or rinsing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

101: Washing machine 130: Water supply unit
190: Level sensor 300:
310: outer body 311: melting guide
312: Dissolution drain 320: Internal body
321: Punching 322: Inner hole
330: dissolution cap 331: dissolution inlet
340: air supply check valve 700:
900: drain valve 400: bubble generator

Claims (12)

A water supply part for supplying washing water;
A dissolution part for storing air inside and mixing the supplied air with the internal air so that the air stored in the water supplied from the water supply part dissolves;
A bubble generator for generating a bubble by flowing water dissolved in air from the dissolution part;
A drain valve installed in the dissolving unit and capable of discharging water mixed with air remaining in the dissolving unit to the outside of the dissolving unit; And
And a controller for controlling the water supply unit and the drain valve to block the inflow of the water supplied to the bubble generator,
. The method of claim 1,
And a water level sensor installed at the dissolving unit for detecting the water level inside the dissolving unit and providing the information detected by the control unit. 3. The method of claim 2,
Wherein,
And when the information detected by the water level sensor is equal to or greater than a predetermined first water level information value, the supply of wash water to the water supply unit is cut off and the drain valve is opened. 4. The method of claim 3,
Wherein,
And closes the drain valve when the information detected by the water level sensor is less than a predetermined second water level information value after the drain valve is opened. 4. The method of claim 3,
Wherein,
And closes the drain valve after a predetermined time after the drain valve is opened. The method of claim 1,
The dissolving unit
An outer body having one side open and a hollow interior;
An inner body disposed inside the outer body such that one side is open and an outer circumferential surface is spaced apart from the inner circumferential surface of the outer body to form a dissolving flow path;
A dissolution cap coupled to one side of the outer body and having a dissolution inlet to supply water supplied from the outside to the inside of the inner body;
A shed formed in one region of the inner body;
A dissolving guide formed in the outer body and guiding water passing through the dissolving passage to the bubble generator; And
A drain hole formed in the outer body and spaced apart from the dissolution guide,
. The method of claim 6,
The dissolving unit
And an inner hole formed on the other side of the inner body and communicating with the dissolving channel. The method of claim 6,
The dissolving unit
Further comprising an air supply check valve installed in the dissolution cap and opened when the water is discharged through the dissolution drain port to allow air to flow into the outer body and the inner body. The method of claim 1,
housing;
A tub installed in the housing and supplied with bubbles generated by the bubble generator; And
A washing tub installed in the tub for storing laundry,
And a washing machine. The method of claim 9,
Wherein the dissolving unit is disposed between the housing and the tub and is disposed adjacent to a lower portion of the tub than an upper portion of the tub. housing;
A washing tub installed inside the housing;
A washing tub disposed inside the tub to receive laundry;
A water supply part for supplying washing water;
A dissolution part for storing air inside and mixing the supplied air with the internal air so that the air stored in the water supplied from the water supply part dissolves;
A bubble generator for generating a bubble by supplying the dissolved water from the dissolving unit to the tub;
A drain valve installed in the dissolving unit and capable of discharging water mixed with air remaining in the dissolving unit to the outside of the dissolving unit; And
When the supply of the bubbles to the tub is stopped, the water supply unit is controlled so as to shut off the supply of the washing water supplied to the dissolving unit and control the drain valve to be opened so that water mixed with the air remaining in the dissolving unit is discharged to the dissolving unit A control unit
. 12. The method of claim 11,
Wherein the control unit closes the drain valve when it is determined that the water mixed with the remaining air in the dissolving unit has been discharged.

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