KR102147819B1 - Washing Machine and Control Method Thereof - Google Patents

Abstract

The present invention relates to a washing machine and a method of controlling the same.An aspect of the present invention relates to a cabinet forming the exterior, a tub that is located inside the cabinet and stores washing water, a rotating tub that is disposed inside the tub to receive laundry, and rotates A driving device that rotates the tank, the auxiliary washing tub that is located inside the rotating tub and is detachable from the rotating tub, the balancer that is located at the top of the tub, and the auxiliary washing tub is located on one side of the auxiliary washing tub, and the auxiliary washing tub is detachable from the balancer. It provides a washing machine, characterized in that it comprises a coupling portion to be possible, a coupling portion receiving portion positioned on at least one side of the balancer and provided in a shape corresponding to the coupling portion.
According to the embodiments of the present invention, since laundry can be simultaneously performed by inputting laundry into the rotating tub and the auxiliary washing tub, respectively, washing can be performed simultaneously depending on the laundry. In addition, by improving the coupling structure between the auxiliary washing tub and the rotating tub, it is possible to provide a washing machine having a strong bonding force so that the auxiliary washing tub is not separated even when the washing machine is operated.

Description

Washing Machine and Control Method Thereof

The present invention relates to a washing machine and a control method thereof, and more particularly, to a washing machine including an auxiliary washing tub located inside a rotating tub and a control method thereof.

A washing machine is a machine for washing clothes using electric power.In general, a washing machine is a fully automatic washing machine that agitates laundry and washing water through rotation of a pulsator and creates laundry water to wash laundry, and laundry through a lifter formed on a drum. It can be classified as a drum-type washing machine for washing laundry by falling.

The fully automatic washing machine includes a tub that stores washing water, a rotating tub that is rotatably installed inside the tub, a pulsator that is rotatably installed at the bottom of the rotating tub, and a driving device for rotating the rotating tub and the pulsator. do.

When the rotary tub and the pulsator rotate while the laundry and washing water are added to the inside of the rotary tub, the pulsator removes dirt from the laundry by agitating the laundry put into the rotary tub together with the washing water.

In recent years, it is possible to separate laundry by installing an auxiliary washing tank inside the rotating tank. This has the advantage of being efficient in terms of time and economy when a consumer uses a washing machine because washing can be performed separately according to the type of laundry.

However, in connection with the combination of the auxiliary washing tub and the rotating tub, in the related art, a fixing structure is used so that the protrusion is caught in the groove. However, in this case, there is a problem in that the rotating tub rotates during the spin-drying process to move the laundry and pushes the auxiliary washing tub upward so that the auxiliary washing tub may be separated.

An aspect of the present invention provides a washing machine having an improved coupling structure of the auxiliary washing tub so as to prevent the auxiliary washing tub from being separated.

An aspect of the present invention is a cabinet forming the exterior, a tub located inside the cabinet and storing washing water, a rotating tub disposed inside the tub to receive laundry, a driving device rotating the rotating tub, and the rotating tub An auxiliary washing tub located inside and detachably coupled from the rotating tub, a balancer in which the auxiliary washing tub is coupled and positioned above the tub, and located at one side of the auxiliary washing tub, so that the auxiliary washing tub is detachable from the balancer. It provides a washing machine, characterized in that it comprises a coupling portion for, and a coupling portion accommodating portion positioned at least one side of the balancer and provided in a shape corresponding to the coupling portion.

At least one insertion groove for accommodating the coupling part may be provided on the upper surface of the auxiliary washing tub.

The coupling portion includes a body portion inserted into the insertion groove, a first head portion extending from the body portion and bent into the auxiliary washing tub, and a second head extending from the body portion and bent outward of the auxiliary washing tub May contain wealth.

The coupling portion accommodating portion includes a protruding portion protruding so as to be coupled to the second head portion, and the protruding portion may be provided in a shape corresponding to the second head portion.

A fastening member for coupling the coupling part to the insertion groove may be coupled to a lower side of the insertion groove.

An elastic member is coupled to one side of the coupling portion, and the coupling portion may be rotatable with respect to the auxiliary washing tub by the elastic force of the elastic member.

One of the coupling part and the coupling part receiving part is a protrusion protruding in the inner direction of the rotating tub, and the other is provided with a protrusion receiving part having a shape corresponding to the protrusion, and the protrusion and the protruding receiving part may be coupled.

A magnet may be positioned inside the protrusion, and a magnetic member capable of reacting with the magnet may be positioned inside the protrusion accommodating portion to couple the auxiliary washing tub and the balancer using magnetic force.

A through hole is provided in at least a portion of the auxiliary washing tub, and the washing water inside the auxiliary washing tub may be formed to be inclined to be dehydrated using a centrifugal force.

Another aspect of the present invention is a cabinet forming the exterior, a tub disposed inside the cabinet to store washing water, a rotating tub disposed inside the tub to receive laundry, a driving device driving the rotating tub, and rotating the tub An auxiliary washing tub located inside the tub and including a coupling portion detachably coupled to the rotating tub, and a balancer positioned above the tub and including a coupling portion receiving portion to which the coupling portion is coupled, and the coupling portion It provides a washing machine, characterized in that it includes a first state coupled to the balancer, and a second state capable of being separated from the balancer by rotating at least a portion of the coupling portion by pressing the coupling portion.

An elastic member is coupled to one side of the coupling portion, and the coupling portion may be rotated from the second state to the first state by the elastic restoring force of the elastic member.

The coupling portion includes a body portion, a first head portion extending from the body portion and bent into the auxiliary washing tub, and a second head portion extending from the body portion and bent outward of the auxiliary washing tub, and the body The elastic member may be coupled to one side of the part.

The coupling portion may be inserted into an insertion groove provided in the auxiliary washing tub and coupled to the auxiliary washing tub.

The coupling portion receiving portion may include a protruding portion protruding so as to be coupled to the second head portion in the first state.

Another aspect of the present invention is a cabinet, a tub positioned inside the cabinet, a rotary tub disposed inside the tub to receive laundry, a pulsator rotatably installed inside the rotary tub, and located inside the rotary tub In the control method of a washing machine including an auxiliary washing tub, determining whether the auxiliary washing tub is installed, determining whether or not washing is performed on the laundry in the rotating tub, at least one of the rotating tub and an auxiliary washing tub A water supply step of supplying washing water to the washing machine, a washing step of rotating the rotating tub alternately in a first direction and a second direction opposite to the first direction for a predetermined time, at least one of the rotating tub and the auxiliary washing tub It provides a control method of a washing machine comprising a dehydration step of dehydrating.

The water supply step may include supplying the washing water to the auxiliary washing tub by calculating an average water supply per minute of washing water supplied to the rotating tub.

The water supply step may include supplying washing water to the auxiliary washing tub and supplying washing water to the rotating tub when the auxiliary washing tub is mounted and washing is performed on the rotating tub.

The washing step may further include rotating the pulsator alternately for a predetermined time in a first direction and a second direction opposite to the first direction when washing is performed in the rotating tub.

In the dehydration step, the washing water in the auxiliary washing tank is not drained, and a washing process may be performed.

Further comprising a rinsing step of supplying water to at least one of the auxiliary washing tub and the rotating tub, wherein the rinsing step includes water supply to the auxiliary washing tub when washing is performed on the auxiliary washing tub and the rotating tub, and the auxiliary Washing water may move through the through hole of the washing tub, and water may be supplied to the rotating tub.

According to the embodiments of the present invention, since laundry can be simultaneously performed by inputting laundry into the rotating tub and the auxiliary washing tub, respectively, washing can be performed simultaneously depending on the laundry. In addition, by improving the coupling structure between the auxiliary washing tub and the rotating tub, it is possible to provide a washing machine having strong bonding force so that the auxiliary washing tub is not separated even when the washing machine is operated.

1 is a cross-sectional view of a washing machine according to an embodiment of the present invention.
2 is a view showing a state in which an auxiliary washing tub and a balancer of a washing machine are combined according to an embodiment of the present invention.
3 is an exploded view showing the auxiliary washing tub and the balancer shown in FIG.
FIG. 4 is an enlarged view of A of FIG. 1.
5 is a view showing an auxiliary washing tub of a washing machine according to an embodiment of the present invention.
6 is a view showing a first state and a second state of a coupling portion of an auxiliary washing tub of a washing machine according to an embodiment of the present invention.
7 is a view showing a balancer of a washing machine according to an embodiment of the present invention.
8 is a view showing a cross section CC' of the balancer of FIG. 7.
9 is a view showing a state in which an auxiliary washing tub and a balancer of a washing machine according to another embodiment of the present invention are combined.
10 is a view showing a state in which an auxiliary washing tub and a balancer of a washing machine according to another embodiment of the present invention are disassembled.
11 is an operation flowchart showing a control algorithm of a washing machine including an auxiliary washing tub according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

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

As shown in Figure 1, the washing machine 1 is a cabinet 10 forming an exterior, a rotating tub 30 rotatably disposed inside the cabinet 10, and a drive to rotate the rotating tub 30 Device 40.

An upper cover 15 with a laundry inlet 14 formed thereon is provided at the top of the cabinet 10 so that laundry can be injected into the rotating tub 30, and the laundry inlet 14 is opened and closed on the upper cover 15. A door 16 is provided.

A lower cover 18 to which the seating part 19 is coupled is provided under the cabinet 10 so that the washing machine 1 can be seated on the floor surface.

A suspension member (not shown) for supporting the rotating tub 30 by hanging from the cabinet 10 is connected to the upper portion of the cabinet 10.

The rotating tub 30 is rotatably disposed inside the cabinet 10, and has a plurality of through holes (not shown) formed along the circumference of the rotating tub 30 at an upper portion thereof.

A balancer 90 may be provided on the upper part of the rotating tub 30.

An auxiliary washing tub 80 detachable from the rotating tub 30 may be coupled to the balancer 90. When the auxiliary washing tub 80 is coupled to the balancer 90, it is located inside the rotating tub 30, and accordingly, laundry of different types is accommodated in the rotating tub 30 and the auxiliary washing tub 80 to proceed with washing. It is possible. The auxiliary washing tub 80 may be separated from the balancer 90, and in this case, it may be separated from the rotating tub 30 and used as a washing tub to receive laundry before and after washing.

A pulsator 35 is rotatably installed at the bottom of the rotating tub 30, and the pulsator 35 serves to agitate the laundry flowing into the rotating tub 30 together with washing water.

A water supply device 50 for supplying washing water to the inside of the rotating tub 30 is installed on the upper part of the rotating tub 30. The water supply device 50 includes a water supply valve 53 for controlling water supply, and a water supply pipe 51 connecting the water supply valve 53 and the detergent supply device 60.

One side of the water supply pipe 51 is connected to an external water supply source (not shown), and the other side of the water supply pipe 51 is connected to the detergent supply device 60. The detergent supply device 60 includes a case 63 provided inside the upper cover 15 and a detergent container 61 which is detachably mounted on the case 63 and accommodates each detergent. A discharge port 65 for discharging the washing water in which the detergent is dissolved is formed at the bottom of the case 63.

The water supplied through the water supply pipe 51 is supplied to the inside of the rotating tub 30 along with the detergent via the detergent supply device 60.

A first drain hose 82 and a second drain hose 84 for guiding the washing water to the outside of the cabinet 10 are provided below the rotating tub 30 after the washing or spinning process is completed.

The driving device 40 includes a clutch 120 that selectively rotates the rotating tub 30 and the pulsator 35, a drive motor 150 that drives the clutch 120, and a drive shaft 124 of the clutch 120. ) And the bottom of the rotary tub 30 to fix the flange member 140 to transmit the rotational force of the drive shaft 124 to the rotary tub 30, and the clutch 120 and the drive motor 150 It includes a base plate 160. In addition, it includes a pulley 135 for fixing the clutch 120 and the drive motor 150.

2 is a view showing a state in which an auxiliary washing tub and a balancer of a washing machine according to an embodiment of the present invention are combined, and FIG. 3 is an exploded view showing the auxiliary washing tub and the balancer shown in FIG. 2, and FIG. 4 is 1A is an enlarged view, and FIG. 5 is a view showing an auxiliary washing tub of a washing machine according to an embodiment of the present invention.

As shown in FIGS. 2 to 5, the auxiliary washing tub 80 may be coupled to the balancer 90. One side of the auxiliary washing tub 80 may be provided with a coupling unit 81 that allows the auxiliary washing tub 80 to be detachably coupled to the balancer 90.

The coupling unit 81 is coupled to one side of the coupling portion 82 and the coupling portion 82 to guide the movement of the coupling portion 82, an elastic member 84, the coupling portion 82, the auxiliary washing tub 80 It may be composed of a fastening member 83 for coupling to. One side of the balancer 90 may be provided with a coupling portion accommodating portion 91 for accommodating the coupling portion 82. The coupling part receiving part 91 may be provided in a shape corresponding to the coupling part 82.

The balancer 90 may be provided in a ring shape. The balancer 90 may be provided by combining the upper plate 93a and the lower plate 93b. The balancer 90 may be coupled so that the auxiliary washing tub 80 is detachably attached to the balancer 90. The auxiliary washing tub 80 is accommodated in the opening 92 of the balancer 90, and the balancer 90 includes a coupling portion receiving portion 91 so that the coupling portion 82 of the auxiliary washing tub 80 can be coupled. I can. The coupling part receiving part 91 may be provided in a shape corresponding to the coupling part 82. The balancer 90 will be described later.

The coupling portion 82 includes a body portion 82c, and a first head portion 82a and a second head portion 82d extending from the body portion 82c. The first head portion 82a may extend from the upper side of the body portion 82c and may be bent in the inner direction of the auxiliary washing tub 80. The second head portion 82d may extend from the lower side of the body portion 82c and be bent in an outer direction of the auxiliary washing tub 80. A bent portion 82b may be provided between the first head portion 82a and the body portion 82c so as to be bent toward the inside of the auxiliary washing tub 80. The coupling portion 82 may have weaker rigidity because the first head portion 82a is pressed in the outer direction of the auxiliary washing tub 80 and the second head portion 82d rotates in the inner direction of the auxiliary washing tub 80. However, this point can be compensated by the bent portion 82b. The coupling portion 82 may include a hinge shaft 82e that is hinged to rotate with respect to the auxiliary washing tub 80. In addition, a guide portion 82f for guiding the rotation of the second head portion 82d may be provided in the coupling portion 82. The guide part 82f may be provided to protrude in the circumferential direction of the auxiliary washing tub 80 from one side of the body part 82c.

An insertion groove 85 into which the coupling part 82 is inserted may be provided at one side of the auxiliary washing tub 80. The insertion groove 85 may be provided in the rim part 88 of the upper surface of the auxiliary washing tub 80. The rim portion 88 may be provided to protrude from the surface of the auxiliary washing tub 80.

An elastic member 84 for guiding the rotation of the coupling portion 82 may be coupled to one side of the coupling portion 82. According to an embodiment of the present invention, one side of the elastic member 84 is coupled to one side of the hinge shaft 82e, and the other side is coupled to the guide portion 82f. Accordingly, when the user presses the first head portion 82a, the second head portion 82d rotates within a certain range by the elastic force of the elastic member 84. In addition, in a state in which no force is applied to the first head portion 82a, the second head portion 82d is formed by the elastic restoring force of the elastic member 84, so that the second head portion 82d is less than the state in which the force is applied to the first head portion 82a. It is located on the outside of (80).

A fastening member 83 for coupling the coupling portion 82 to the auxiliary washing tub 80 may be coupled to the coupling portion 82. Since the fastening member 83 is coupled to the hinge shaft 82e, it may be provided to correspond to the shape of the hinge shaft 82e. A hole 85b for coupling the fastening member 83 to the auxiliary washing tub 80 is provided on the lower surface of the circumferential portion 88 to be adjacent to the insertion groove 85. Since the fastening member 83 is coupled to the auxiliary washing tub 80 through the hole 85b to accommodate the hinge shaft 82e, the coupling unit 82 may be coupled to the auxiliary washing tub 80.

A plurality of through holes 80a may be provided in the upper portion of the cylindrical portion of the auxiliary washing tub 80. In addition, the cylindrical portion of the auxiliary washing tub 80 may be formed to be inclined. Accordingly, when the auxiliary washing tub 80 rotates, the washing water in the auxiliary washing tub 80 may be drained through the through hole 80a by centrifugal force.

6 is a view showing a first state and a second state of a coupling portion of an auxiliary washing tub of a washing machine according to an embodiment of the present invention.

Fig. 6(a) refers to a first state, and Fig. 6(b) refers to a second state.

The first state refers to a state in which the auxiliary washing tub 80 is coupled to the balancer 90, and the second state refers to a state in which the auxiliary washing tub 80 can be separated from the balancer 90.

In the first state, the second head portion 82d is rotated to the outside of the auxiliary washing tub 80 by the elastic restoring force of the elastic member 84. When the user grips the first head portion 82a and presses the first head portion 82a, the second head portion 82d rotates in the inner direction of the auxiliary washing tub 80, and accordingly, the second head portion 82d ) And the protrusion 91c of the balancer 90 are separated from each other, the auxiliary washing tub 80 can be separated from the balancer 90. That is, unless the first head portion 82a is pressed, the second head portion 82d and the protruding portion 91c are in a coupled state, so even when the washing machine 1 is operated, the auxiliary washing tub 80 is ) Does not deviate from.

7 is a diagram illustrating a balancer of a washing machine according to an embodiment of the present invention, and FIG. 8 is a view showing a cross section of CC′ of the balancer of FIG. 7.

7 and 8, the coupling portion receiving portion 91 may be provided on the inner side of the balancer 90. The protrusion 91c may be positioned so that the second head portion 82d can be coupled in the coupling portion receiving portion 91.

Departure prevention portions 91b may be provided on both sides of the coupling portion receiving portion 91 to guide the coupling position of the coupling portion 82 and prevent the coupling portion 82 from being separated in the left and right directions. The separation prevention part 91b may be provided to surround at least a portion of the circumference of the coupling part 82. According to an embodiment of the present invention, both sides of the coupling portion 82 are in contact with the separation preventing portion 91b, and the second head portion 82d of the coupling portion 82 may contact the protruding portion 91c. have.

According to an embodiment of the present invention, the coupling portion receiving portion 91 includes a base portion 91a, and a departure preventing portion 91b and a protruding portion 91c may extend from the base portion 91a. However, the present invention is not limited thereto, and the protrusion 91c and the departure prevention part 91b may be extended from the inner surface of the balancer 90.

9 is a view showing a state in which an auxiliary washing tub and a balancer of a washing machine according to another embodiment of the present invention are combined, and FIG. 10 is a diagram illustrating a state in which the auxiliary washing tub and balancer of a washing machine according to another exemplary embodiment of the present invention are disassembled. It is a drawing.

9 and 10, the auxiliary washing tub 180 is coupled to the balancer 190. A coupling portion 181 is provided in the auxiliary washing tub 180, and a coupling portion receiving portion 192 is provided in the balancer 190. At least one of the coupling part 181 and the coupling part receiving part 192 is provided in the shape of a protrusion protruding in the inner direction of the rotating tub 30, and the other is provided in the shape of a protrusion receiving part having a shape corresponding to the protrusion. The protrusion and the protrusion receiving portion may be combined. According to an embodiment of the present invention, the coupling portion receiving portion 192 of the balancer 190 may be provided in a protruding shape, and the protruding receiving portion may be provided in the coupling portion 181 of the auxiliary washing tub 180. The protrusion receiving portion may be provided in a shape corresponding to the protrusion. According to an embodiment of the present invention, both sides of the coupling portion 181 because the coupling portion receiving portion 192 is provided in a protruding shape and the coupling portion 181 of the auxiliary washing tub 180 is provided in the shape of the protruding receiving portion It may be provided to protrude from the surface of the auxiliary washing tub 180.

In addition, according to one aspect of the present invention, the balancer 190 and the auxiliary washing tub 180 are positioned on a magnet in one of the balancer 190 and the auxiliary washing tub 180, and a magnetic member is positioned in the other to couple the balancer 190 and the auxiliary washing tub 180 by magnetic force. I can. Accordingly, since a certain or more force must be applied to separate the auxiliary washing tub 180 from the balancer 190, the auxiliary washing tub 180 is prevented from being separated from the balancer 190 due to vibration generated by the operation of the washing machine 1 can do.

11 is an operation flowchart showing a control algorithm of a washing machine including an auxiliary washing tub according to an embodiment of the present invention.

As shown in Fig. 11, in the water supply step, the control unit (not shown) determines whether the auxiliary washing tub 80 is installed. (S100) Washing the auxiliary washing tub 80 and the rotating tub 30 A case in which this is performed is defined as a first mode, a case in which washing is performed only for the auxiliary washing tub 80 is defined as a second mode, and a case in which washing is performed only for the rotating tub 30 is defined as a third mode. . When the auxiliary washing tub 80 is coupled to the balancer 90, the first mode or the second mode may proceed. When the auxiliary washing tub 80 is not installed, the third mode proceeds.

When the auxiliary washing tub 80 is installed, it is determined whether or not washing is performed with respect to the rotating tub 30 (S200). The washing is not performed for the rotating tub 30 and only the auxiliary washing tub 80 is washed. When this is in progress, the first mode is executed, and when washing is performed for the auxiliary washing tub 80 and the rotary tub 30, the second mode is executed.

In the case of the first mode in which the auxiliary washing tub 80 is mounted and washing is performed on the rotating tub 30 and the auxiliary washing tub 80, washing water is supplied to the auxiliary washing tub 80 (S300-1) The washing water is supplied to 30). (S400-1) The water supply of the auxiliary washing tub 80 and the rotating tub 30 may be performed according to the amount of cloth in the auxiliary washing tub 80 and the rotating tub 30. Water is supplied to the auxiliary washing tub 80 at a predetermined level or higher, and washing water flows out through the through hole 80a formed in the auxiliary washing tub 80 to fill the rotary tub 30.

In the washing step of the first mode, the rotating tub 30 is rotated alternately for a predetermined time in a first direction and a second direction opposite to the first direction (S500-1). In this process, the clutch 120 may be switched to the rotating tub 30 rotation mode. That is, the rotating tub 30 may be rotated in a clockwise direction in the first direction for t1 hours, and in a counterclockwise direction in the second direction for t2 hours. A step of stopping or decelerating the driving motor 150 for t3 hours may be included between the rotation in the first direction and the rotation in the second direction. In addition, the driving motor 150 may be stopped or decelerated for t4 hours between the rotation in the second direction and the rotation in the first direction. The rotation and stop of the rotating tub 30 may be repeated according to the washing time specified in the washing program selected by the user according to each garment.

The pulsator 35 is rotated in a first direction and a second direction opposite to the first direction for a predetermined period of time (S600-1). In this process, the clutch 120 may be switched to the pulsator 35 rotation mode. The pulsator 35 may be rotated in a clockwise direction in the first direction for t5 hours, and in a counterclockwise direction in the second direction for t6 hours. During the rotation of the pulsator 35, the auxiliary washing tub 80 may perform a washing process without draining.

Thereafter, a dehydration step of dewatering the washing water of the rotating tub 30 and the auxiliary washing tub 80 is performed (S700-1), and the rinse water is supplied into the rotating tub 30 and the auxiliary washing tub 80 (S800). -One)

In the second mode in which the auxiliary washing tub 80 is mounted and washing is not performed on the rotating tub 30, washing water is supplied only to the auxiliary washing tub 80 (S300-2). The water supply can be supplied by a fixed amount. That is, if water is supplied to the rotary tub 30 according to the amount of cloth in the rotary tub 30 in advance, the time at which water is supplied to the rotary tub 30 is defined as T, and the water supply is defined as L, the average water supply per minute is It can be defined as L/T. Accordingly, the time required for water supply of the auxiliary washing tub 80 can be calculated, and the washing water is supplied to the auxiliary washing tub 80 by operating the water supply valve 53 for a predetermined time (S300-2).

In the washing step, the rotating tub 30 is rotated alternately in a first direction and a second direction opposite to the first direction for a predetermined time (S500-2). Due to the rotation of the rotating tub 30, the auxiliary washing tub 80 also rotates, and accordingly, laundry in the auxiliary washing tub 80 may be washed. In the second mode, the rotation of the rotary tub 30 may be rotated alternately for a predetermined time in the first direction and the second direction, respectively, as described above.

Thereafter, a dehydration step of dewatering the washing water in the auxiliary washing tub 80 is performed (S700-2), and the rinse water is supplied into the auxiliary washing tub 80 (S800-2).

In the case of the third mode in which the auxiliary washing tub 80 is not installed, washing water is supplied to the rotating tub 30 (S300-3). In addition, in the progress of the washing step, as described above, the rotating tub 30 is alternately rotated in the first direction and the second direction for a predetermined time (S500-3), and the pulsator 35 is rotated in the first direction and the second direction. Each rotates alternately for a predetermined time in the second direction (S600-3). After the washing process, the washing water in the rotating tub is dehydrated (S700-3), and the rinse water is supplied into the rotating tub. (S800-3)

To proceed with the rinsing step (S900), water is supplied to the auxiliary washing tub 80 (S800-1, S800-2, S800-3). The water supply can also be made to the rotating tub 30 through the through hole 80a of the auxiliary washing tub 80, and the water supply is terminated when a certain water level is reached.

In the above, specific embodiments have been illustrated and described. However, it is not limited only to the above-described embodiments, and those of ordinary skill in the technical field to which the invention pertains will be able to perform various changes without departing from the gist of the technical idea of the invention described in the following claims. .

1: washing machine 10: cabinet
20: tub 30: rotating tank
35: pulsator 80, 180: auxiliary washing tank
82, 181: coupling portion 83: fastening member
84: elastic member 90, 190: balancer
91, 191: coupling portion receiving portion

Claims (20)

Cabinets forming the exterior;
A tub located inside the cabinet and storing washing water;
A rotating tank disposed inside the tub to receive laundry;
A driving device for rotating the rotating tub;
An auxiliary washing tub located inside the rotating tub and coupled to be detachable from the rotating tub;
A balancer to which the auxiliary washing tub is coupled and located above the tub;
A coupling part positioned on one side of the auxiliary washing tub and allowing the auxiliary washing tub to be detachable from the balancer;
A coupling portion receiving portion positioned on at least one side of the balancer and provided in a shape corresponding to the coupling portion;
An elastic member coupled to one side of the coupling portion and allowing the coupling portion to rotate with respect to the auxiliary washing tub by an elastic force;
Including,
At least one insertion groove for receiving the coupling portion is provided on the upper surface of the auxiliary washing tub,
The coupling portion may include a body portion inserted into the insertion groove, a first head portion extending upward from the body portion and bent inward of the auxiliary washing tub, and extending downward from the body portion, A second head bent outward, a hinge shaft hinged to the auxiliary washing tub so as to be rotatable with respect to the auxiliary washing tub, and a second head provided so as to protrude from one side of the body in the circumferential direction of the auxiliary washing tub to rotate the second head portion Including a guide portion to guide the,
One side of the elastic member is coupled to one side of the hinge shaft and the other side is coupled to the guide unit, so that when the first head unit is pressed, the second head unit rotates within a predetermined range by the elastic force of the elastic member. Washing machine characterized by. delete delete The method of claim 1,
And the coupling part receiving part includes a protruding part protruding so as to be coupled to the second head part, and the protruding part has a shape corresponding to the second head part. The method of claim 1,
A washing machine, characterized in that a fastening member for coupling the coupling part to the insertion groove is coupled to a lower side of the insertion groove. delete The method of claim 1,
A washing machine, characterized in that one of the coupling part and the coupling part receiving part is a protrusion protruding in the inner direction of the rotating tub, and the other is provided with a protrusion receiving part having a shape corresponding to the protrusion, and the protrusion and the protruding receiving part are coupled to each other. . The method of claim 7,
A washing machine, characterized in that a magnet is positioned inside the protrusion, and a magnetic member capable of reacting with the magnet is positioned inside the protrusion accommodating part to couple the auxiliary washing tub and the balancer using magnetic force. The method of claim 1,
A washing machine, characterized in that: a through hole is provided in at least a portion of the auxiliary washing tub, and the washing water inside the auxiliary washing tub is formed to be inclined to be dehydrated using a centrifugal force. Cabinets forming the exterior;
A tub disposed in the cabinet and storing washing water;
A rotating tank disposed inside the tub to receive laundry;
A driving device for driving the rotating tub;
An auxiliary washing tub located inside the rotating tub and including a coupling unit detachably coupled to the rotating tub;
A balancer located above the tub and including a coupling portion receiving portion to which the coupling portion is coupled;
Including,
The coupling portion includes a first state coupled to the balancer, and a second state capable of being separated from the balancer by rotating at least a portion of the coupling portion by pressing the coupling portion,
An elastic member is coupled to one side of the coupling portion, and the coupling portion is rotated from the second state to the first state by the elastic restoring force of the elastic member,
The coupling part includes a body part, a first head part extending upward from the body part and bent toward the inside of the auxiliary washing tub, and a second head part extending downward from the body part and bent outward of the auxiliary washing tub. A head portion, a hinge shaft hingedly coupled to the auxiliary washing tub to be rotatable with respect to the auxiliary washing tub, and a guide portion provided to protrude from one side of the body portion in the circumferential direction of the auxiliary washing tub to guide the rotation of the second head portion and,
One side of the elastic member is coupled to one side of the hinge shaft and the other side is coupled to the guide unit, so that when the first head unit is pressed, the second head unit rotates within a predetermined range by the elastic force of the elastic member. Washing machine characterized by. delete delete The method of claim 10,
The washing machine, characterized in that the coupling part is inserted into the insertion groove provided in the auxiliary washing tub and coupled to the auxiliary washing tub. The method of claim 10,
And a protruding portion protruding so as to be coupled to the second head portion in the first state. A washing machine comprising a cabinet, a tub located inside the cabinet, a rotating tub disposed inside the tub to receive laundry, a pulsator rotatably installed inside the rotating tub, and an auxiliary washing tub located inside the rotating tub In the control method,
Determining whether the auxiliary washing tub is installed;
Determining whether or not washing is performed on the laundry in the rotating tub;
A water supply step of supplying washing water to at least one of the rotating tub and the auxiliary washing tub;
A washing step of rotating the rotating tub alternately in a first direction and a second direction opposite to the first direction for a predetermined time;
A dehydration step of dehydrating at least one of the rotating tub and the auxiliary washing tub;
Control method of a washing machine comprising a. The method of claim 15,
The water supply step comprises supplying the washing water to the auxiliary washing tub by calculating an average water supply per minute of the washing water supplied to the rotating tub. The method of claim 15,
The water supply step,
And when the auxiliary washing tub is mounted and washing is performed on the rotating tub, water is supplied to the auxiliary washing tub and the washing water is supplied to the rotating tub. The method of claim 15,
The washing step,
The control method of a washing machine, further comprising rotating the pulsator alternately for a predetermined time in a first direction and a second direction opposite to the first direction when washing is performed in the rotating tub. The method of claim 15,
In the dehydration step, the washing water in the auxiliary washing tank is not drained, and the washing process is performed. The method of claim 15,
Further comprising a rinsing step of supplying water to at least one of the auxiliary washing tub and the rotating tub, wherein the rinsing step includes water supply to the auxiliary washing tub when washing is performed on the auxiliary washing tub and the rotating tub, and the auxiliary The control method of a washing machine, characterized in that the washing water moves through the through hole of the washing tub and water is supplied to the rotating tub.

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