KR20190028036A - Laundry Treatment Apparatus and Method for Controlling the same - Google Patents

Abstract

The present invention relates to a laundry treatment apparatus capable of automatically providing a liquid detergent to laundry and a control method thereof. According to the present invention, the laundry treatment apparatus comprises: a cabinet; a tub disposed in the cabinet to store water; a drum rotationally disposed in the tub to store laundry; a body inlet disposed in the cabinet; a door to open/close the body inlet; a storage body providing a space for storage of a liquid detergent and inserted into the cabinet through the body inlet; a connection pipe detachably coupled to the storage body; a chamber to provide a space for storing a liquid detergent; a detergent pump to move the detergent stored in the storage body to the chamber through the connection pipe; and a supply flow path to connect the chamber with the tub. Moreover, the control method of the laundry treatment apparatus comprises: a closing detection step of determining whether the door closes the body inlet; a detergent pump control step of operating the detergent pump for a predetermined reference time when it is determined that the door closes the body inlet; and a detergent detection step of determining whether the detergent flows in the chamber.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a laundry processing apparatus,

The present invention relates to a clothes processing apparatus and a control method of the clothes processing apparatus.

The garment processing apparatus is a concept that includes a device for washing clothing, a device for drying clothes, and a device capable of performing both washing and drying of clothes.

Conventional clothes processing apparatuses include a cabinet, a tub provided in the cabinet for storing water, a drum rotatably installed in the tub, a drum for storing clothes, a storage for storing a detergent, A water supply channel for supplying water to the storage body, and a connection channel for connecting the storage body and the tub.

The garment treating apparatus having the above-described structure includes a process of supplying a proper amount of detergent to the storage body after the user draws the storage body out of the cabinet, a process of supplying water through the water supply channel when the storage body storing the detergent is inserted into the cabinet The detergent was supplied to the tub.

However, the conventional clothes processing apparatus that supplies the detergent through the above-described processes has inconvenience that the user must input a certain amount of detergent into the storage body every time the laundry is washed. In addition, since the conventional clothes processing apparatus has to determine the amount of detergent to be supplied to the garment, there is a problem that it is difficult to supply detergent in an appropriate amount depending on the amount of garment.

The present invention relates to a clothes processing apparatus capable of automatically supplying a liquid detergent to clothes, and a control method thereof.

The present invention also relates to a clothes processing apparatus and a control method thereof that can determine whether a storage body storing liquid detergent is mounted in a cabinet and whether a liquid detergent exists in the storage body.

cabinet; A tub provided in the cabinet for storing water; A drum rotatably installed in the tub to store clothing; A body loading port provided in the cabinet; A door for opening and closing the body loading port; A storage body for providing a space for storing the liquid detergent and inserted into the cabinet through the body inlet; A connection pipe detachably coupled to the storage body; A chamber for providing a space in which the liquid detergent is stored; A detergent pump for moving the liquid detergent stored in the storage body to the chamber through the connector; And a supply passage connecting the chamber and the tub, the method comprising: a closing detection step of determining whether the door has closed the body inlet; A detergent pump control step of operating the detergent pump for a preset reference time if the door is determined to have closed the body inlet; And a detergent sensing step of determining whether a liquid detergent has been introduced into the chamber.

The reference time may be set as the operating time of the detergent pump to cause liquid detergent below the volume of the chamber to be discharged from the storage body.

If it is determined that the liquid detergent has been introduced into the chamber in the detergent sensing step, the present invention can supply the liquid detergent to the tub by operating the detergent pump.

If the liquid detergent does not flow into the chamber in the detergent sensing step, the present invention can perform a notification step of displaying a text message requesting the detergent replenishment through a notification unit provided in the cabinet.

If the liquid detergent does not flow into the chamber during the detergent detection step, the present invention can execute a notification step of generating a voice message requesting the detergent replenishment through the notification unit provided in the cabinet.

The present invention may include: an opening sensing step of determining whether the door has opened the body inlet after completing the notification step; A water supply step of supplying water to the tub when the door is detected as not opening the body inlet at the opening sensing step; And a drum rotating step of rotating the drum.

The present invention further includes an opening sensing step of sensing whether or not the door has opened the body inlet after completing the notification step, wherein the closing sensing step, the detergent pump controlling step, And may be repeated when the door is detected as opening the body inlet at the sensing step.

If the number of repetitions of the closing detection step, the detergent pump control step, and the detergent detection step is equal to or greater than a predetermined reference number, the present invention may include: a water supply step of supplying water to the tub; And a drum rotating step of rotating the drum.

The present invention is characterized in that the method includes measuring a quantity of clothing stored in the drum and detecting a quantity of laundry before the detergent detection step; And a detergent supply step of supplying the liquid detergent to the tub by operating the detergent pump when it is determined that the liquid detergent has been introduced into the chamber in the detergent sensing step, The operating time may be set to increase in proportion to the amount of the laundry that is measured in the laundry detecting step.

INDUSTRIAL APPLICABILITY The present invention can provide a clothes processing apparatus capable of automatically supplying a liquid detergent to clothes and a control method thereof.

In addition, the present invention can provide a clothes processing apparatus and a control method thereof that can determine whether a storage body storing a liquid detergent is mounted in a cabinet and whether a liquid detergent exists in the storage body.

Fig. 1 and Fig. 2 show an example of the clothes processing apparatus of the present invention.
Fig. 3 shows an example of a control method of the clothes processing apparatus of the present invention.
4 shows another embodiment of the control method of the clothes processing apparatus of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the present invention is not limited to the details of the embodiments described below, .

1, the clothes processing apparatus 100 of the present invention includes a cabinet 1, a tub 2 provided inside the cabinet 1 to provide a space for storing water, And a detergent supply unit 8 for supplying a liquid detergent to the tub.

The cabinet 1 may be provided to form an outer appearance of the clothes processing apparatus. In the front face of the cabinet 1, there are provided a slot 11 provided to insert clothes into the drum 4, And a door 13 (first door) which is rotatably coupled to the loading port 11 to open or close the loading port 11 is provided.

A control panel 15 for controlling the clothes processing apparatus 100 is provided on one of the front surface of the cabinet 1 and the door 13. Figure 1 shows a state in which the control panel 15 is connected to the cabinet 1 1) according to an embodiment of the present invention.

The control panel 15 may include an input unit 151 and a notification unit 153. The input unit 151 is a means for the user to input a control command to a control unit May be provided as a display device for displaying a control command selectable by the control unit (not shown) or an execution procedure of a control command selected by the user. Furthermore, the notification unit 153 may further include a speaker for providing a sound signal or a voice signal to the user.

The cabinet 1 further includes a body inlet 17 for allowing the detergent supply unit 8 to be inserted into the cabinet 1 or detached from the cabinet 1. The body input port 17 may be positioned below the input port 11 and may be opened and closed by a body input port door 171 which is rotatably coupled to the cabinet 1.

In order to detect whether the second door 171 is in the opened state or in the closed state, the door detection unit may further be provided in the present invention. The door sensing unit includes a magnet 191 provided in the second door 171 and a magnetic force sensing unit 180 provided in the cabinet 1 to generate an electrical signal depending on the intensity of the magnetic force emitted from the magnet 191 193).

The magnetic force sensing unit 193 may be configured to transmit the magnitude of the magnetic force emitted from the magnet 191 to a control unit (not shown) when the magnitude of the magnetic force is equal to or greater than a preset reference value. In this case, the controller determines that the second door 171 closes the body inlet 17 when the electric signal is received from the magnetic force sensing unit 193, and the electric signal is detected by the magnetic force sensing unit 193 If it is not received, it can be determined that the body input port 17 is in the open state.

The tub 2 may be a cylinder having an empty interior and may be fixed to the inside of the cabinet 1 through a supporting part 25. [ The support portion 25 may include a spring connecting the upper region of the tub 2 to the cabinet 1 and a damper connecting the lower region of the tub to the bottom surface of the cabinet.

On the front surface of the tub, a tub inlet 21 communicating with the inlet 11 is provided. The inlet (11) and the tub inlet (21) may be connected by a gasket (23) to prevent water stored in the tub from leaking to the outside of the tub.

The tub 2 receives water through a water supply unit, and the water stored in the tub is discharged to the outside of the cabinet 1 through a drainage unit. The water supply unit may include a water supply pipe 71 connecting the water supply source and the tub 2, and a water supply valve 73 for opening or closing the water supply pipe by the control unit.

The drainage unit includes a drainage pump 77, a first drainage pipe 75 for transferring the water stored in the tub to the drainage pump 75, a drainage pump 75 for guiding water discharged from the drainage pump 77 to the outside of the cabinet 1, 2 water pipe (79).

The drum 4 may be provided in a cylindrical shape which is hollow inside and can be positioned inside the tub 2. [ A drum inlet 41 communicating with the tub inlet 21 is provided on the front surface of the drum 4. Therefore, the user can insert the clothes into the drum 4 through the inlet 11, the tub inlet 21, and the drum inlet 41 after opening the inlet 11 with the door 13. [ The drum 4 is provided with a plurality of through holes 43. So that water supplied to the tub 2 can be supplied into the drum.

The drum 4 is rotated by a driving unit 5 having a stator 51 fixed to the back surface of the tub 2 and forming a rotating field when current is supplied thereto, And a rotary shaft 53 extending through the tub 2 and connecting the drum 4 and the rotor 55 to each other.

The permanent magnet 551 is provided on the rotor 55 so that the N pole and the S pole are alternately exposed. Accordingly, when a control unit (not shown) supplies current to the stator 51 to form a rotating system, the rotor 55 is rotated by the permanent magnets 551, and when the rotor 55 rotates, The rotating shaft 53 and the drum 4 will rotate.

The sensing unit 6 may further include a sensing unit 6 for sensing the rotational speed of the drum 4 or the rotational angle of the drum. And a sensor that generates different electrical signals when the N pole and S pole of the permanent magnet 551 pass through the sensing unit 6 when the rotor 55 rotates. In this case, the control unit can determine the rotation angle of the drum through the change amount of the electrical signal provided by the sensing unit 6, and can control the number of revolutions or rotation of the drum through the change period of the electrical signal provided by the sensing unit 6. [ You will be able to judge the speed.

The detergent supply unit 8 includes a storage body 82 for providing a space for storing the liquid detergent and inserted into the cabinet 1 through the body inlet 17, And a receiving body 81 for providing a space in which the receiving portion 82 is received.

2, the storage body 82 and the receiving body 81 are formed in a hexahedron shape (e.g., a rectangular parallelepiped shape). The storage body 82 can be formed in any shape as long as it can provide a space for accommodating the storage body 82, As shown in FIG. In this case, the front surface of the receiving body 81 should have an opening or a through hole communicating with the body inlet 17.

The storage body 82 is provided with three supply supplies 821 and a lead 823 on the upper surface thereof and the user removes the supply 822 from the storage body 82, And the user can supply the liquid detergent to the storage body 82 through the three supply supplies 821 from which the lead 823 has been removed.

The detergent supplying unit 8 may further include a connecting pipe 85 fixed to the receiving body 81 and detachably coupled to the storing body 82. In this case, the storage body 82 may further include a coupling tube coupling hole into which the coupling tube 85 is inserted, and a coupling hole valve 825 provided in the coupling tube coupling hole.

The connection pipe engagement hole is provided at a position where the connection pipe 85 can be inserted into the storage body 82 when the storage body 82 is inserted into the accommodation body 81, The valve 825 is preferably provided as a check valve which is opened by the connection pipe 85 when the connection pipe 85 is inserted into the connection pipe fastening hole.

The detergent supply unit 8 includes a detergent pump 87 for discharging the liquid detergent contained in the storage body 82 to the outside of the storage body 82 through the connection pipe 85, And a supply passage 88 connecting the chamber 89 and the tub 2 to guide the liquid detergent in the chamber to the turbine, .

The detergent pump 87 includes a housing 871 having an inlet 873 and an outlet 875 and a liquid detergent which is rotatably installed inside the housing and flows into the inlet 873 to the outlet 875 And a pump motor (not shown) provided outside the housing to rotate the impeller.

The inlet 873 is connected to the connecting pipe 85 and the outlet 875 is connected to the chamber 89. The supply passage 88 may be directly connected to the tub 2 (see FIG. 1) or may be connected to the tub 2 through a first drain pipe 75. Therefore, when the impeller 877 rotates, the liquid detergent in the storage body 82 flows into the tub 2 through the connecting pipe 85, the housing 871, the chamber 89 and the supply passage 88 Will be supplied.

The connection pipe 85 is provided inside the connection pipe 85 so that the liquid detergent in the storage body 82 can be moved to the chamber 89 only when the detergent pump 88 operates. A connection pipe valve 851 for opening and closing can be further provided. The connection pipe valve 851 may be provided as a check valve for allowing the liquid detergent to move only from the storage body 82 to the chamber 89 and may be opened or closed in accordance with a control signal of the control unit Valve.

A detergent sensing unit may further be provided in the chamber 89 to sense whether the liquid detergent flows into the chamber 89. The detergent sensing unit may be provided in any form as long as it is possible to determine whether liquid detergent has been introduced into the chamber 89. Figure 2 shows a detergent sensing unit including a first metal plate 891 connected to either the positive electrode or the negative electrode, A second metal plate 893 connected to the other one of the first metal plate and the second metal plate, and a current sensing unit 895 for sensing whether a current flows in a circuit formed by the first metal plate and the second metal plate will be.

The first metal plate 891 and the second metal plate 893 may be fixed to the upper surface of the chamber. One end of the first metal plate 891 may be located outside the chamber 89 and the other end of the first metal plate 891 may be located inside the chamber 89. The second metal plate 893 is also preferably positioned at one end outside the chamber 89 and at the other end inside the chamber 89. However, the first metal plate 891 and the second metal plate 893 should be spaced apart from each other.

When the liquid detergent is supplied to the chamber 89, the first metal plate 891 and the second metal plate 893 are electrically connected by the liquid detergent, and the first metal plate 891 and the second metal plate 893 are electrically The current sensing unit 895 will sense the current flowing in the circuit. Accordingly, if the current sensing unit 895 is configured to transmit an electrical signal to the control unit when the current of the circuit is sensed, the control unit may determine whether liquid detergent has been introduced into the chamber 89.

FIG. 3 illustrates an example of a control method of a garment processing apparatus having the above-described structure. The control method of the present invention includes a closing detection step of determining whether the second door 171 has closed the body inlet 17 A detergent pump control step S40 of operating the detergent pump 87 for a predetermined reference time if the second door 171 determines that the body inlet 17 is closed, (S50) for judging whether the liquid detergent has been introduced into the liquid detergent (89).

In the closing detection step S30, the controller determines whether the body inlet 17 is closed based on the electrical signal provided by the magnetic force sensing unit 193.

There are various methods for determining whether or not the storage body 82 is mounted on the clothes processing apparatus in the clothes processing apparatus 100 provided with the detergent supply unit 8 described above. That is, when the door detecting units 191 and 193 are provided in the clothes processing apparatus, the controller controls the second door 171 to open the body inlet 17 based on a signal transmitted from the magnetic force sensing unit 193, It is possible to determine whether or not the storage body 82 is mounted on the receiving body 81 by determining whether the state of the body filling port is closed and whether the body filling port is closed in sequence. When the second door 171 is sequentially opened and closed in the process of opening and closing the body inlet 17, the user removes the storage body 82 from the receiving body 81, This is because it is likely to be reinstalled.

When the storage body 82 is further inserted into the accommodating body 81 and a mounting sensing unit (not shown) for transmitting an electrical signal to the controller is further provided in the accommodating body 81, Whether or not it is mounted on the body 81 may be judged through the mounting sensing part.

However, the method of determining whether the storage body 82 is mounted to the receiving body 81 through the door sensing units 191 and 193 is not limited to the case where the storage body 82 is not mounted on the receiving body 81 There is a problem to be mistaken for being installed.

The method of determining whether the storage body 82 is mounted on the receiving body 81 through the door sensing units 191 and 193 and the mounting sensing unit may be determined by whether the liquid detergent remains in the storage body 82 It is difficult to judge whether or not it exists.

It may be considered to detect whether liquid detergent is present in the storage body 82 by providing a sensor for detecting whether liquid detergent remains in the storage body 82. However, It is difficult to ensure the performance of the sensor. In addition, if a sensor is installed in the storage body 82 detachably coupled to the receiving body 81, a means for supplying electric power to the sensor and a communication means for connecting the sensor and the controller are required.

The detergent pump control step S40 and the detergent detection step S50 may be performed by using a liquid detergent solution in the storage body 82 without using a separate sensor for detecting whether detergent is present in the storage body 82. [ There is an effect of detecting whether or not there is a presence.

The detergent pump control step S40 is a process of moving the liquid detergent stored in the storage body 82 to the chamber 89 by operating the impeller 877 provided in the detergent pump for the reference time. The detergent pump control step (S40) is preferably performed for a preset reference time. The reference time is preferably set as the operating time of the detergent pump 87 to cause liquid detergent in the chamber 89 to be discharged from the storage body 82. So that the detergent is prevented from being supplied to the tub 2 at a time when the detergent should not be supplied to the tub 2.

The detergent sensing step S50 determines whether the liquid detergent has been introduced into the chamber 89 through the detergent sensing units 891, 893 and 895 provided in the chamber 89. If the liquid detergent remains in the storage body 82, the liquid detergent in the storage body 82 may be discharged through the connecting pipe 85 and the housing 871 of the detergent pump during operation of the detergent pump 87, (89).

In this case, since the liquid detergent introduced into the chamber will electrically connect the two metal plates 891 and 893, the current sensing unit 895 is configured such that current flows in a circuit configured to include two metal plates 891 and 893 and electrodes And the controller may determine that the liquid detergent is stored in the storage body 82 when the current sensor 895 transmits an electrical signal.

If it is determined that the detergent is present in the storage body 82 through the detergent detection step S50, the control method of the present invention controls the operation of the detergent pump 87 to supply detergent to the tub 2 Steps S61 and S63 are executed. However, the detergent supply steps S61 and S63 may be performed in a step S60 to determine whether the amount of clothes stored in the drum 4 has reached the detergent detection step S50 The operation time of the detergent pump 87 can be controlled differently.

The amount of clothes to be used for determining the amount of clothes stored in the drum 4 may be determined in various manners. The amount of the electric current supplied to the stator 51 for rotating the drum 4 up to a preset reference angle may be determined It can be an example. In this case, the control unit determines whether the rotation angle of the drum 4 has reached the reference angle through the sensing unit 6, and determines the amount of current supplied to the stator 51 through the current amount measuring unit (not shown) Measurement.

If it is determined that the quantity detection step has been performed before the detergent detection step (S50), the detergent supply step activates the detergent pump (S63) for a preset time corresponding to the quantity of the detergent. The set time is the operating time of the detergent pump which is set to increase in proportion to the amount of laundry. Therefore, the set time is set to increase as the amount of cloth is increased.

However, if it is determined that the surplus amount sensing step has not proceeded before the detergent sensing step (S50), the detergent supply step may supply the set amount of the liquid detergent to the tub 2 regardless of the amount of the detergent, (S61).

On the other hand, if it is determined that the detergent is not introduced into the chamber 89 in the detergent detection step S50, the control method of the present invention may include a notification step S51 for requesting replacement of the detergent through the notification unit 153 . The notification step S51 may be configured to display a text message through a display unit provided in the notification unit or to generate a voice message through a speaker provided in the notification unit.

After the informing step S51 or after the informing step S51 is completed, the control method of the present invention may include an opening sensing step S55 for determining whether the second door 171 has opened the body inlet 17, .

If it is detected through the opening detection step S55 that the second door 171 is opened to the body inlet 17, the present invention may be applied to the closing detection step S30, the detergent pump control step S40, The detergent detection step (S50) is repeated.

However, if the number of repetitions of the closing detection step S30, the detergent pump control step S40, and the detergent detection step S50 is equal to or greater than a preset reference number S53 or the opening detection step S55, When the second door 171 is detected as not opening the body inlet 17, the present invention does not supply the liquid detergent to the tub 2. [

FIG. 4 illustrates another embodiment of the control method of the present invention. The control method according to the present embodiment includes a course selection step (S10) of receiving a control command from a user, And further includes step S20.

The course selection step S10 is a step in which the control unit receives a control command input by the user through the input unit 151. [ The quantity detection step S20 may include measuring the amount of clothes stored in the drum through the sensing unit 6 and the current amount sensing unit as described above.

After the completion of the quantity detection step S20, the control method of the present invention executes the closing detection step S30, the detergent pump control step S40, and the detergent detection step S50. Since the closing detection step S30, the detergent pump control step S40, and the detergent detection step S50 have been described in detail with reference to the embodiment of FIG. 3, detailed description of each step will be omitted.

If it is determined that the liquid detergent has been introduced into the chamber 89 through the detergent detection step S50, the control method according to the present embodiment activates the detergent pump during the set time corresponding to the draining, The detergent supply step (S63) for supplying the liquid detergent to the detergent dispenser.

During the progress of the detergent supply step (S63) or after the detergent supply step (S63), the control method according to this embodiment executes the water supply step (S70) and the drum rotation step (S80).

The water supplying step S70 is a step of supplying water to the tub 2 by controlling the water supply valve 73. The amount of water supplied to the tub in the water supplying step S70 is proportional to the amount of clothes put into the drum To be increased.

The drum rotation step S80 is a step (rinsing or rinsing) of rubbing the clothes stored in the drum and the water stored in the tub by supplying a current to the stator 51. In the drum rotation step S80, the drum 4 may be controlled so as to alternately perform clockwise rotation and counterclockwise rotation, or may be controlled to rotate in only one direction, It may be controlled to repeat. The drum rotation step S80 is executed during the set time set in the control command selected by the user or the set time input by the user through the course selection step S10 in step S90.

Meanwhile, if it is determined that the liquid detergent does not flow into the chamber 89 in the detergent detection step S50, the control method according to the present embodiment executes the notification step S51 for requesting the detergent replenishment. Since the notification step S51 has been described in detail with reference to the embodiment of FIG. 3, detailed description of each step will be omitted.

After the informing step S51 or after the informing step S51 is completed, the control method according to the present embodiment may include an open sensing step of determining whether the second door 171 has opened the body inlet 17 (S55).

If it is detected through the opening detection step S55 that the second door 171 is opened to the body inlet 17, the present invention may be applied to the closing detection step S30, the detergent pump control step S40, The detergent detection step (S50) is repeated.

However, if the number of repetitions of the closing detection step S30, the detergent pump control step S40, and the detergent detection step S50 is equal to or greater than a preset reference number S53 or the opening detection step S55, If it is detected that the second door 171 does not open the body inlet 17, the present invention executes the water supply step S70 and the drum rotation step S80 and S90.

Accordingly, the present invention provides a garment processing apparatus capable of automatically supplying a liquid detergent to clothes and determining whether the storage body is mounted in a cabinet, whether liquid detergent exists in the storage body, and a control method thereof It is effective.

The present invention may be embodied in various forms without departing from the scope of the invention. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: Clothing processing apparatus 1: Cabinet 151: Input unit
153: Notification section 17: Body entry port 171: Body entry door
2: tub 4: drum 5:
6: Detection unit 71: Water supply pipe 77: Drain pump
8: detergent supply part 81: accommodating body 82: storage body
825: fastening hole valve 85: connecting pipe 851: connecting pipe valve
87: Detergent pump 871: Housing 873: Inlet
875: outlet 877: impeller 88:
89: chamber 891: first metal plate 893: second metal plate
895:

Claims (9)

cabinet; A tub provided in the cabinet for storing water; A drum rotatably installed in the tub to store clothing; A body loading port provided in the cabinet; A door for opening and closing the body loading port; A storage body for providing a space for storing the liquid detergent and inserted into the cabinet through the body inlet; A connection pipe detachably coupled to the storage body; A chamber for providing a space in which the liquid detergent is stored; A detergent pump for moving the liquid detergent stored in the storage body to the chamber through the connector; And a supply passage connecting the chamber and the tub, the method comprising:
A closing detection step of determining whether the door has closed the body inlet;
A detergent pump control step of operating the detergent pump for a preset reference time if the door is determined to have closed the body inlet; And
And a detergent detection step of determining whether a liquid detergent has been introduced into the chamber. The method according to claim 1,
Wherein the reference time is set to an operating time of the detergent pump that causes liquid detergent of a volume or less of the chamber to be discharged from the storing body. The method according to claim 1,
Wherein when the detergent detection step determines that the liquid detergent has been introduced into the chamber, the detergent pump is operated to supply the liquid detergent to the tub. 3. The method of claim 2,
And a notification step of displaying a text message requesting supplemental detergent through the notification unit provided in the cabinet if the liquid detergent does not flow into the chamber in the detergent sensing step . 3. The method of claim 2,
And a notification step of generating a voice message for requesting a detergent replenishment through a notification unit provided in the cabinet if the liquid detergent does not flow into the chamber in the detergent sensing step . 5. The method of claim 4,
An opening sensing step of determining whether or not the door has opened the body inlet after completing the notification step;
A water supply step of supplying water to the tub when the door is detected as not opening the body inlet at the opening sensing step; And
And a drum rotating step of rotating the drum. 5. The method of claim 4,
And an opening sensing step of sensing whether or not the door has opened the body inlet after completing the notification step,
Wherein the closing detection step, the detergent pump controlling step, and the detergent detecting step are repeated when the door is detected as opening the body inlet in the opening sensing step. 8. The method of claim 7,
A water supply step of supplying water to the tub when the number of repetitions of the closing detection step, the detergent pump control step, and the detergent detection step is equal to or greater than a preset reference number; And a drum rotating step of rotating the drum. 9. The method according to any one of claims 1 to 8,
Measuring an amount of clothes stored in the drum and detecting the amount of laundry before the detergent detection step; And
And a detergent supply step of supplying the liquid detergent to the tub by operating the detergent pump when it is determined that the liquid detergent has been introduced into the chamber in the detergent sensing step,
Wherein the operating time of the detergent pump in the detergent supply step is set so as to increase in proportion to the amount of laundry measured in the detecting step.

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