KR20100081221A - Washing machine - Google Patents

Abstract

PURPOSE: A washing machine is provided to decrease the size of a device and to prevent detergent from making direct contact with laundry by effectively controlling the amount of the detergent by controlling only the operation of a solenoid. CONSTITUTION: A washing machine(100) is composed of a water supply part(130), a detergent supply part(140), and a supply controller(150). Washing water is supplied through the water supply part. The detergent supply part supplies detergent to the water supply part. The supply controller controls the detergent supply part. The detergent supply part is composed of a housing and a supply part. Detergent is stored in the housing. The supply part is communicated with the water supply part. The supply part is formed in the housing.

Description

Washing machine {WASHING MACHINE}

The present invention relates to a washing machine, and more particularly to a washing machine having a detergent supply function.

In general, a washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of detergent, friction action of water flow caused by rotation of the pulsator, and impact action of the pulsator on laundry. Appearing automatic washing machine automatically performs a series of processes leading to washing, rinsing and dehydration without user intervention in the middle.

Such a washing machine may be classified into a top-loading washing machine in which the washing tank is set up and a drum washing machine in which the washing tank is laid, depending on the type of the washing tank in which the laundry is accommodated. Compared to this, not only can the overall height be reduced, but the washing capacity can be increased, and problems such as entanglement are rarely generated, and thus the demand is increasing.

1 is a cross-sectional view schematically showing the structure of a drum type washing machine.

Referring to FIG. 1, a washing machine includes a tub 2 elastically supported by a spring 6 and a damper 7 in a main body 1, and a drum rotatably installed in the tub 2 to accommodate laundry. 3) and a drive unit 4 axially connected to the drum 3. The drive unit 4 is composed of a rotor (not shown) and a stator (not shown), and a drive shaft is connected to the rotor to transmit the driving force of the rotor to the drum 3.

The upper part of the drum (3), the detergent container (8) which is connected to the water supply line (10) is provided, the detergent container drawer (9) which is detachably installed inside the detergent container (8) so that the user can put the detergent ) Is provided. In addition, the front surface of the main body 1 is provided with the door 5 rotatably from side to side at a position facing the opening of the drum 3.

The washing machine configured as described above, after putting the detergent and bleach and the softener of the powder into the detergent container drawer (9) before washing, and set the type of laundry or washing time through a control panel (not shown) Press the start button to automatically run a series of steps from washing to rinsing and dehydration.

On the other hand, liquid detergents that are well diluted in washing water and excellent in emulsification have recently been widely spread. When the liquid detergent is to be put into the washing machine, it is impossible to inject the detergent by opening the door 5 while the washing water is supplied due to the characteristics of the drum washing machine. It must be introduced through the detergent container (8).

According to the above washing machine, when the liquid detergent is directly added to the laundry, the laundry is damaged, and when the liquid detergent is introduced through the detergent container, the detergent input amount is not accurate due to the structural characteristics of the powder detergent. Problems arise. In other words, the detergent container has a structure in which the powder detergent is diluted by an appropriate amount of water to be supplied to the drum, but in the case of the liquid detergent, the detergent can be directly added to the drum even if it is not diluted in the washing water due to its fluidity. The silver powder is for the detergent and the amount of dilution of the powder detergent and the liquid detergent by the wash water can not but be different, which causes a problem that it is difficult to control the amount of detergent detergent. Therefore, there is a need for improvement.

The present invention was devised to improve the above problems, and an object thereof is to provide a washing machine having an improved structure so as to supply a desired amount of liquid detergents in a timely manner.

Washing machine according to the present invention includes: a water supply unit to which washing water is supplied; Detergent supply unit for supplying a detergent to the water supply unit; And a supply control unit controlling the detergent supply unit.

Here, the detergent supply unit, the housing in which the detergent is stored; And a supply part provided in the housing to communicate with the water supply part.

The supply control unit may include an opening and closing unit for opening and closing the supply unit; And an operation control unit for controlling the operation of the opening and closing unit so that the opening and closing unit is moved between a first position for supplying the detergent to the water supply unit and a second position for not supplying the detergent to the water supply unit.

In addition, the operation control unit, the opening and closing the connecting portion is installed; And a connection control unit for controlling the operation of the connection unit to move between the first position and the second position.

In addition, the connection control unit, the fixing member is installed the connection unit; And an elastic member for elastically supporting the fixing member.

In addition, the connection control unit preferably further comprises a solenoid for moving the fixing member between the first position and the second position.

In addition, the opening and closing portion, the first opening and closing member for opening the supply in the first position and closing the supply in the second position; And a second opening and closing member spaced apart from the first opening and closing member.

In addition, the second opening and closing member is preferably disposed in a position to close the supply in the first position and open the supply in the second position.

The supply control unit may further include a detergent amount sensing unit for sensing the level of the detergent stored in the housing.

The detergent amount sensing unit may include: a first sensing unit disposed in the housing to sense a maximum level value of the detergent; And a second sensing unit disposed in the supply unit to sense a minimum level value of the detergent.

In addition, the detergent supply unit preferably further comprises an injection unit for supplying the detergent to the housing.

The water supply unit may include: a water supply pipe through which washing water is supplied; And it is preferable to have a water supply valve for opening and closing the water supply pipe.

In addition, the water supply pipe is preferably provided to be inclined so that the outlet side is located at the bottom.

In addition, the present invention is a drum for receiving laundry; And a weight sensing unit for sensing a weight value of laundry applied to the drum.

According to the washing machine of the present invention, in consideration of the weight value of the wash water at the time of washing automatically by supplying a mixture of detergent and wash water, such as liquid detergent, there is no hassle of the user to put the detergent every time when washing the desired amount Not only can the detergent be supplied in a timely manner, but the detergent does not come in direct contact with the laundry, so there is little risk of laundry damage.

In addition, the present invention can efficiently control the detergent supply amount only by controlling the operation of the supply control unit, more specifically, the solenoid operation, so that a complicated control program is unnecessary, and the structure is simple. There is an advantage that it is easy and easy to manufacture and the volume and weight of the entire apparatus is reduced.

In addition, the present invention, when the level value of the detergent exceeds the maximum level value or less than the minimum level value, since the detergent amount detection unit detects this and sends out a warning message to the user, the detergent supply amount adjustment as described above Problems can be prevented from occurring.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a washing machine according to the present invention. For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

2 is a perspective view illustrating a washing machine according to an embodiment of the present invention, FIG. 3 is a cross-sectional view illustrating the washing machine shown in FIG. 2, and FIGS. 4 and 5 schematically illustrate a part of the washing machine shown in FIG. 2. 6 is a schematic view illustrating a structure of the washing machine illustrated in FIG. 2.

2 to 6, the washing machine 100 according to an embodiment of the present invention includes a cabinet 110, a tub 120, a water supply unit 130, a detergent supply unit 140, and a supply control unit. And 150.

The cabinet 110 forms an appearance of the washing machine 100 according to the present embodiment. The cabinet 110 accommodates the tub 120 and many other devices.

The tub 120 is horizontally installed inside the cabinet 110. The tub 120 may be formed of a metal material, a plastic material, a synthetic resin, or the like, and wash water is introduced into the tub 120. Inside the tub 120, a drum 125 for receiving laundry is rotatably received.

The water supply unit 130 is connected to an external water source and is connected to the tub 120 to supply washing water to the tub 120. The water supply unit 130 may be directly connected to the tub 120, it may be connected to the tub 120 and may be connected to the detergent container 160 for supplying powder detergent, fabric softener, etc. to the tub 120. In this embodiment, the water supply unit 130 is illustrated as being connected to the tub 120 through the detergent container 160, but is not limited thereto.

The water supply unit 130 as described above includes a water supply pipe 132 and a water supply valve 134. The water supply pipe 132 is connected to the tub 120, preferably the detergent container 160 is connected to the tub 120, the water supply valve 134 is provided to open and close the water supply pipe 132.

The water supply pipe 132 is disposed between the external water source and the tub 110, that is, the detergent container 160 connected to the tub 120, and is connected to the detergent supply unit 140 to be described later. The water supply pipe 132 is a passage through which the washing water supplied from an external water source moves to the detergent container 160 and the tub 120, and the detergent supplied from the detergent supply unit 140 is the detergent container 160 and the tub 120. It is a passage to go to.

In addition, the water supply pipe 132 is preferably provided so as to be inclined so that the portion connected to the outlet, that is, the detergent container 160 or the tub 120 is located below. As such, the water supply pipe 132 provided to be inclined may improve water supply performance and suppress generation of residual water in the water supply pipe 132.

The detergent supply unit 140 is accommodated in the cabinet 110 and is connected to the water supply unit 130, more specifically, the water supply pipe 132. The liquid supply unit 140 supplies a detergent, more specifically, a liquid detergent (hereinafter referred to as "detergent") formed of liquid to the wash water that is moved through the water supply pipe 132. The detergent supply unit 140 includes a housing 142 and the supply unit 144.

The housing 142 is accommodated in the cabinet 110 and stores detergent. The lower part of the housing 142 is provided with a supply unit 144. The supply unit 144 communicates with the housing 142 and is connected to the water supply pipe 132 of the water supply unit 130 to connect the water supply unit 130 and the detergent supply unit 140.

The detergent supply unit 140 may further include an injection unit 146 to allow a user to inject detergent into the housing 142. The injection part 146 communicates with the housing 142 and is provided to be opened and closed.

The injection portion 146 protrudes from the housing 142 to be exposed to the outside of the cabinet 110 so that a user can inject detergent into the housing 142 from the outside of the cabinet 110, preferably the cabinet It is provided to be exposed to the top of the (110).

As the injection part 146 exposed to the outside of the cabinet 110 may damage the aesthetics of the washing machine 100 as described above, the cabinet 110 may be provided with a cover part 112. In the washing machine 100 of the present embodiment, the cover part 112 is provided to be opened and closed, so that the cover part 112 is opened to expose the injection part 146 when the detergent is injected, and the injection part 146 is normally used. Aesthetics can be maintained by preventing exposure.

The supply control unit 150 is provided on the detergent supply unit 140 to control the supply of the detergent. The supply control unit 150 includes an opening and closing unit 151 and the operation control unit 155.

The opening and closing unit 151 is provided to open and close the supply unit 144. The opening and closing part 151 includes a first opening and closing member 152 and a second opening and closing member 153 moved between the first position and the second position. Here, the first position is defined as the position in which the opening and closing portion 151 supplies the detergent to the water supply portion 130, and the second position is the position in which the opening and closing portion 151 does not supply the detergent to the water supply portion 130. Is defined.

The first opening and closing member 152 is disposed below the supply unit 144. The first opening / closing member 152 opens the supply part 144 at a first position, that is, at a position that is separated from the supply part 144 and is located inside the water supply pipe 132 of the water supply part 130, The supply part 144 is closed at a position in close contact with the lower part of the supply part 144.

The second opening and closing member 153 is disposed to be spaced apart from the first opening and closing member 152, and is preferably disposed above the supply part 144. The second opening / closing member 153 closes the supply part 144 at the first position, that is, the position which is in close contact with the upper part of the supply part 144, and is separated from the second position, that is, the supply part 144, so that the inside of the housing 142 is closed. The supply unit 144 is opened at a position located at.

Meanwhile, a space S is formed between the first opening / closing member 152 and the second opening / closing member 153 spaced apart from each other. Detergent is stored in the space (S) when the opening and closing portion 151 is located in the first position, the detergent stored in the space (S) is water supply unit 130 when the opening and closing portion 151 is located in the second position. ) Is supplied to the water supply pipe 132. Specifically, the area of the space S is determined as the space between the first opening / closing member 152 positioned at the first position and the top of the supply unit 144.

The volume of the space (S) is preferably formed to store an appropriate amount of detergent to be supplied when washing once. The volume of the space S may be appropriately adjusted by adjusting the distance between the first opening and closing member 152 and the second opening and closing member 153.

The operation controller 155 includes a connection unit 156 and a connection control unit 157.

The connection part 156 is provided between the connection control part 157 and the opening / closing part 151. The opening and closing portion 151 is installed at the connection portion 156. That is, the first opening / closing member 152 is installed at the lower portion of the connecting portion 156, and the second opening / closing member 153 is installed at an upper portion thereof to be spaced apart from the first opening / closing member 152. The connection portion 156 is provided to move between the first position and the second position to move the opening and closing portion 151 between the first position and the second position.

The connection control unit 157 is connected to the connection unit 156. The connection part 157 controls the operation of the connection part 156 so that the connection part 156 is moved between a 1st position and a 2nd position. The connection control unit 157 includes a fixing member 157a and an elastic member 157b.

The fixing member 157a is disposed above the housing 142. The fixing portion 157a is provided to be movable between the first position and the second position, and the fixing portion 157a is provided with a connecting portion 156. The fixing part 157a moves the connecting part 156 between the first position and the second position by moving between the first position and the second position.

The elastic member 157b is provided to elastically support the fixing member 157a. The elastic member 157b serves to return the fixing member 157a moved from the second position to the first position by elastically supporting the fixing member 157a in the second position direction.

According to the present embodiment, the connection controller 157 may further include a solenoid 157c. The solenoid 157c moves the fixing member 157a between the first position and the second position by electrical control.

On the other hand, according to the connection control unit 157 of the present embodiment, the fixing member 157a is illustrated as being moved by the solenoid 157c, but the present invention is not limited thereto. The connection control unit 157 of the present invention may have a structure that is connected to the fixing member 157a and has an operation button exposed to the outside of the cabinet 110 and allows the user to press the operation button to move the fixing member 157a. Various modifications are possible, such as that.

Hereinafter, the operation relationship of the supply control unit 150 will be described.

When the water supply valve 134 is opened and the wash water flows into the water supply pipe 132, the wash water is supplied into the tub 110 through the detergent container 160.

At this time, as shown in FIG. 5, when the solenoid 157c is operated to move the fixing member 157a to the first position, the connection part 156 connected to the fixing member 157a is moved to the first position to open and close the opening portion ( 151 is moved to the first position.

As the opening and closing portion 151 is moved to the first position, the first opening and closing member 152 is moved to the first position to open the lower portion of the supply portion 144. Accordingly, the detergent stored in the space (S) is supplied to the water supply pipe 132 through the lower portion of the supply unit 144 and mixed with the wash water, and the mixed wash water and the detergent are supplied to the tub 110 through the detergent container 160. It is supplied internally.

At this time, since the second opening and closing member 154 is moved to the first position to close the upper part of the supply unit 144, only the detergent stored in the space S is supplied to the water supply pipe 132, and The above detergent supply is not made. In addition, the washing water flowing through the water supply pipe 132 to the housing 142 is also blocked by the second opening and closing member 154.

After the supply of the detergent is completed, as shown in Figure 4, when the fixing member 157a is returned to the second position, the connecting portion 156 connected to the fixing member 157a is moved to the second position to open and close the portion 151 Move to the second position.

As the opening and closing part 151 is moved to the second position, the first opening and closing member 152 is moved to the second position to close the lower part of the supply unit 144, and the second opening and closing member 152 is moved to the second position. To open the top of the supply unit 144. Accordingly, the detergent stored in the housing 142 flows into the space S, and thus, the detergent S of the proper amount to be supplied upon washing once is stored in the space S.

In addition, the supply control unit 150 of the present embodiment may further include a detergent amount detection unit 159 for detecting the level of detergent stored in the housing 142. The detergent amount sensing unit 159 includes a first sensing unit 159a and a second sensing unit 159b.

Among these, the first sensing unit 159a is provided inside the housing 142 and is disposed at a position corresponding to the maximum level value of the detergent that can be stably stored in the housing 142 without overflowing from the housing 142. .

In addition, the second detection unit 159b is provided inside the supply unit 144, and the detergent supply unit 140 is positioned at a position corresponding to the minimum level value of the detergent required to supply the appropriate amount of the detergent to be supplied at a time of washing once. Is placed. To this end, the second sensing unit 159b is disposed above the supply unit 144, that is, above the area occupied by the space S.

On the other hand, the washing machine 100 of the present embodiment, as shown in Figure 6, may further include a weight sensing unit 170 and the controller 180.

The weight sensing unit 170 detects a weight value applied to the drum 125, that is, a weight value of laundry. The weight sensing unit 170 is configured to include a weight sensor for sensing the weight value of the drum (125). The controller 180 controls the operation of the entire washing machine 100 according to the present embodiment, and is connected to the solenoid 157c (see FIG. 4), the detergent amount sensing unit 159, and the weight sensing unit 170.

The controller 180 transmits a warning signal to the user according to the control signal transmitted from the detergent amount sensing unit 159 as described above, and the solenoid of the supply control unit 150 according to the control signal transmitted from the weight sensing unit 170. The operation of 159c is controlled. Detailed description thereof will be described later.

7 is a flowchart illustrating a control method of the washing machine shown in FIG. 2.

Hereinafter, the operation and control method of the washing machine 100 according to the present embodiment will be described with reference to FIGS. 2 to 7.

First, when a user inputs laundry to the drum 125 (S10) and operates the corresponding button of the control panel 185 related to the operation of the detergent supply unit 140 and the supply control unit 150 (S20), the detergent amount detection unit The first detecting unit 159a and the second detecting unit 159b of 159 are operated to detect the level of detergent stored in the housing 142 (S30).

When the water level of the detergent is less than the minimum level value, the detergent amount detecting unit 159 transmits a control signal corresponding thereto to the control unit 180 (S40), and the control unit 180 receiving the control signal transmits a screen or A warning message is sent to the user through the sound (S42). Accordingly, the user may recognize that the level of the detergent is below the minimum level value through a warning message, and may inject the detergent through the injection unit 146 such that the level of the detergent is greater than or equal to the minimum level value (S44).

Meanwhile, even when the level of the detergent exceeds the maximum level when the detergent is injected, a warning message may be sent to the user through the above process.

In addition, the weight sensing unit 170 detects the weight value of the laundry and transmits a control signal to the controller 180 (S50).

The weight value of the laundry may be divided into the capacity of the washing machine 100 and the number of pieces of furniture as needed. In this embodiment, the weight value of the laundry is illustrated as being divided into two values, but is not limited thereto.

Hereinafter, a case where the weight value of the laundry is divided into two values, low weight and high weight, will be described as an example.

The controller 180 receiving the control signal from the weight sensing unit 170 calculates the amount of water supplied and the amount of detergent supplied (S60). When the water supply amount and the detergent supply amount are calculated, the controller 180 controls the water supply valve 134 to be opened so that the washing water is supplied (S70) and stops the operation of the second detection unit 159b (S80). The controller 150 controls to operate (S90).

As the supply control unit 150 is operated, the solenoid 157c moves the connecting portion 156 from the second position to the first position, and thus the opening and closing portion 151 is connected to the first position at the second position by the connecting portion 156. It is moved to a position to open the supply unit 144. The detergent stored in the space S is supplied to the water supply pipe 132 of the water supply unit 130 by opening the supply unit 144, mixed with the wash water in the water supply pipe 132, and the tub 120 through the detergent container 160. Is fed into the interior.

When the detergent supply is completed, the control unit 180 stops the operation of the supply control unit 150 (S100). As the operation of the supply control unit 150 is stopped, the solenoid 157c moves the connecting portion 156 from the first position to the second position again, and the opening and closing portion 151 is connected to the first position at the second position by the connecting portion 156. It is moved back into position to close the supply 144. At this time, the appropriate amount of detergent to be supplied when washing once is stored in the space S again.

The controller 180 determines a next operation according to whether the weight value of the laundry is a low weight or a high weight (S110).

When the weight value of the laundry is low, the controller 180 controls the water supply valve 134 to be closed when water supply is completed so that the supply of the wash water is stopped (S120), so that the washing machine 100 starts the washing operation. Control (S130).

If the weight value of the laundry is heavy, the controller 180 controls the second sensing unit 159b to be operated again (S111). When the level of the detergent is less than the minimum level, the detergent level detecting unit 159 transmits a control signal corresponding to the detergent level (S112), and the controller 180 receiving the control signal transmits a screen or sound. A warning message is sent to the user through S113. Accordingly, the user may recognize that the level of the detergent falls below the minimum level value through a warning message, and may inject the detergent through the injection unit 156 such that the level of the detergent is greater than or equal to the minimum level value (S114).

Meanwhile, even when the level of the detergent exceeds the maximum level when the detergent is injected, a warning message may be sent to the user through the above process.

When the level of the detergent is between the minimum level value and the maximum level value, the controller 180 controls the supply control unit 150 to be operated again (S115).

As the supply control unit 150 is operated again, the detergent stored in the space S is once more supplied to the water supply pipe 132 of the water supply unit 130 by opening the supply unit 144, and the washing water is supplied from the water supply pipe 132. The mixture is supplied to the inside of the tub 120 via the detergent container 160.

When the detergent supply is completed, the controller 180 stops the operation of the supply controller 150 (S116). As the operation of the supply control unit 150 is stopped, the opening and closing unit 151 is moved back from the second position to the first position to close the supply unit 144. At this time, the appropriate amount of detergent to be supplied when washing once is stored in the space S again.

Then, the controller 180 controls the water supply valve 134 to be closed when water supply is completed to stop the supply of the washing water (S120), and controls the washing machine 100 to start the washing operation (S130).

Washing machine 100 of the present embodiment as described above, in consideration of the weight value of the wash water at the time of washing automatically by supplying a detergent and a wash water, such as liquid detergent, by the time the user inputs the detergent daily laundry There is no risk of damage to the laundry as it can be supplied in a timely manner and the amount of detergent desired, and the detergent does not come in direct contact with the laundry.

In addition, the washing machine 100 of the present embodiment can efficiently control the detergent supply amount only by simple operation control that controls only the operation of the supply control unit 150, more specifically, the operation of the solenoid 157c. There is no need to prepare a, the structure is simple, easy to manufacture, easy to manufacture, there is an advantage that the volume and weight of the entire device is reduced.

In addition, the washing machine 100 of the present embodiment, when the water level value of the detergent exceeds the maximum water level value or less than the minimum water level value, since the detergent amount detection unit 159 detects this and sends out a warning message to the user. As described above, it can be prevented that a problem occurs in adjusting the amount of detergent supply.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. In addition, the drum type washing machine has been described as an example, but this is merely exemplary, and the present invention may be applied to a washing machine other than the drum type washing machine. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a cross-sectional view schematically showing the structure of a drum type washing machine.

2 is a perspective view showing a washing machine according to an embodiment of the present invention.

3 is a cross-sectional view of the washing machine shown in FIG. 2.

4 and 5 are schematic diagrams schematically showing a part of the washing machine shown in FIG.

6 is a configuration diagram showing the configuration of the washing machine shown in FIG.

7 is a flowchart illustrating a control method of the washing machine shown in FIG. 2.

Explanation of symbols on the main parts of the drawings

100: washing machine 110: cabinet

112: cover 120: tub

130: water supply unit 132: water supply pipe

134: water supply valve 140: detergent supply unit

142: housing 144: supply

146: injection unit 150: supply control unit

151: opening and closing part 152: first opening and closing member

153: second opening and closing member 155: operation control unit

156: connection unit 157: connection control unit

159: detergent amount detection unit 160: detergent container

170: weight detection unit 180: control unit

Claims (14)

A water supply unit to which washing water is supplied; Detergent supply unit for supplying a detergent to the water supply unit; And Washing machine comprising a supply control unit for controlling the detergent supply. According to claim 1, wherein the detergent supply unit, A housing in which the detergent is stored; And And a supply part provided in the housing so as to communicate with the water supply part. The method of claim 2, wherein the supply control unit, An opening and closing unit for opening and closing the supply unit; And Washing machine comprising an operation control unit for controlling the operation of the opening and closing portion so that the opening and closing portion is moved between the first position for supplying the detergent to the water supply and the second position for not supplying the detergent to the water supply. . The method of claim 3, wherein the operation control unit, A connection part to which the opening and closing part is installed; And Washing machine comprising a connection control unit for controlling the operation of the connection unit to be moved between the first position and the second position. The method of claim 4, wherein the connection control unit, A fixing member in which the connection part is installed; And Washing machine comprising an elastic member for elastically supporting the fixing member. The method of claim 5, The connection control unit further comprises a solenoid for moving the fixing member between the first position and the second position. The method of claim 3, wherein the opening and closing portion, A first opening / closing member for opening the supply part in a first position and closing the supply part in a second position; And Washing machine comprising a second opening and closing member spaced apart from the first opening and closing member. The method of claim 7, wherein And the second opening / closing member is disposed at a position of closing the supply part at a first position and opening the supply part at a second position. The method of claim 3, The supply control unit, the washing machine further comprises a detergent amount sensing unit for sensing the level of the detergent stored in the housing. The method of claim 9, wherein the detergent amount detection unit, A first sensing unit disposed in the housing to sense a maximum level value of the detergent; And The washing machine, characterized in that provided with a second sensing unit disposed in the supply unit for detecting the minimum level value of the detergent. The method of claim 2, The detergent supply unit further comprises an injection unit for supplying the detergent to the housing. According to claim 1, The water supply unit, A water supply pipe to which washing water is supplied; And Washing machine comprising a water supply valve for opening and closing the water supply pipe. The method of claim 12, The water supply pipe is a washing machine, characterized in that it is provided to be inclined so that the exit side is located at the bottom. The method of claim 1, A drum for receiving laundry; And Washing machine further comprises a weight sensing unit for sensing the weight value of the laundry applied to the drum.

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