KR20220021862A - Clothes Treating Apparatus and Controlling Method thereof - Google Patents

Abstract

In accordance with one embodiment of the present invention, a clothes treatment apparatus includes: a cabinet; a tub including a space in which water is stored; a drum provided in the tub to be rotatable, and including an open surface through which clothes are carried in and out, and a floor surface located opposite the open surface; a rotating part including a floor part located on the floor surface, a pillar part projected from the floor part toward the open surface, and blades provided in a circumferential direction of the pillar part to be placed apart from each other, and extended from the floor part toward the open surface in a direction inclined to a longitudinal direction of the pillar part, and installed on the floor surface to be rotatable in the drum; a water supply part supplying water into the tub; an injector receiving the water from the water supply part to inject the water into the drum; a drain part discharging the water in the tub to the outside of the cabinet; and a control part controlling the rotation of the drum and the rotating part and the operation of the water supply part and the drain part. During a rinsing operation, the water is continuously injected from the injector with the drain part closed, and the drum and the rotating part are rotated in the same direction. Therefore, the present invention is capable of securing rinsing performance while preventing the filling of water.

Description

Cloths Treating Apparatus and Controlling Method thereof

The present invention relates to a laundry treatment apparatus, and to a laundry treatment apparatus having a rotating part in a drum.

A laundry treatment device is a device that removes contamination from laundry by putting clothes, bedding, etc. (hereinafter referred to as laundry) into the drum. The laundry treatment apparatus can perform processes such as washing, rinsing, dehydration, and drying, and the laundry treatment apparatus can perform a top loading method and a front loading method based on a method of putting laundry into a drum. can be distinguished

The laundry treatment apparatus may include a housing that forms an exterior, a tub accommodated in the housing, a drum rotatably mounted inside the tub and into which laundry is put, and a detergent supply device that supplies detergent to the inside of the drum.

When the drum rotates by the motor in a state in which wash water is supplied to the laundry accommodated in the drum, dirt on the laundry may be removed by friction between the drum and the wash water.

Meanwhile, a rotating part may be provided inside the drum to improve the washing effect of laundry. The rotating part may be rotated inside the drum to form a water flow, and the washing effect of laundry may be improved by the rotating part.

Korean Patent Registration No. 10-0186729 discloses a laundry treatment apparatus including a rotating part provided inside a drum. The laundry treatment apparatus improves washing efficiency by rotating a rotating part to form a water flow.

An efficient design is required so that the water flow formed according to the rotation of the rotating unit can improve washing efficiency, and further, a design capable of effectively reducing the load on the motor by effectively reducing the load on the rotation of the rotating unit is required.

Therefore, it is an important task in the art to design the rotating unit so that the rotating unit can rotate to effectively improve washing efficiency and effectively reduce the load on the rotating unit for rotation.

According to embodiments of the present invention, it is an object of the present invention to provide a laundry treatment apparatus capable of securing rinsing performance while minimizing the amount of water used and rinsing time required, and a method for controlling the same.

Another object of the present invention is to provide a laundry treatment apparatus that allows a fabric softener to be present in the laundry treatment apparatus for a long time, and a method for controlling the same.

As an example for solving the above problems, there are provided a laundry treatment apparatus capable of performing rinsing while spraying water in a state in which a drain unit is closed, and a method for controlling the same.

In addition, the present invention provides a laundry treatment apparatus capable of securing rinsing performance while repeatedly increasing and decreasing the RPM of the drum and the rotating unit, and a method for controlling the same.

More specifically, according to an embodiment of the present invention, a cabinet, a tub including a space for storing water, an open surface provided to be rotatable inside the tub, an open surface through which clothing enters and exits, and a floor located on the opposite side of the open surface A drum including a surface, a bottom portion positioned on the bottom surface, a pillar portion protruding from the bottom portion toward the open surface, and provided along the circumferential direction of the pillar portion are arranged to be spaced apart from each other, and inclined with respect to the longitudinal direction of the pillar portion It includes a blade extending from the bottom side to the open surface side along the photograph direction, and a rotating part installed to be rotatable on the bottom surface inside the drum, a water supply part supplying water into the tub, and water from the water supply part A spraying device receiving the supply and spraying it into the drum, a drainage unit discharging the water in the tub to the outside of the cabinet, and a control unit for controlling rotation of the drum and the rotating unit and operations of the water supply unit and the drain unit In the control method of a clothes treatment apparatus, the injection device in a state in which the drain part is closed after the fabric softener input step in which the fabric softener is introduced into the drum through the water provided from the water supply part and the fabric softener input step are completed Clothes treatment comprising a; water spraying step in which water is sprayed to the drum through A method for controlling a device is provided.

In addition, the rinsing rotating step provides a method of controlling a laundry treatment apparatus in which the RPM of the drum and the rotating unit is controlled to vary.

In addition, in the rinsing rotation step, the drum and the rotating unit are controlled such that a first rotation for forming an ascending water flow is performed and a second rotation for forming a descending water flow is performed after the first rotation, and in the rinsing rotation step, the drum and the rotating unit provides a method of controlling a laundry treatment apparatus in which the first rotation and the second rotation are alternately performed.

In addition, there is provided a method of controlling a laundry treatment apparatus in which RPM of the drum and the rotating unit are repeatedly increased and decreased in the rinsing rotation step.

In addition, there is provided a method for controlling a laundry treatment apparatus in which a draining step and a dehydrating step are performed after the rinsing rotation step is performed.

In addition, according to another embodiment, a cabinet, a tub including a space for storing water, a tub rotatably provided inside the tub, including an open surface through which clothes enter and exit, and a bottom surface located on the opposite side of the open surface A drum, a bottom portion positioned on the bottom surface, a pillar portion protruding from the bottom portion toward the open surface, and provided along the circumferential direction of the pillar portion are spaced apart from each other and disposed along a direction inclined with respect to the longitudinal direction of the pillar portion It includes a blade extending from the bottom side to the open surface side, a rotating unit rotatably installed on the floor surface inside the drum, a water supply unit supplying water into the tub, and receiving water from the water supply unit. A spraying device for spraying into the drum, a drain for discharging the water in the tub to the outside of the cabinet, and a control unit for controlling rotation of the drum and the rotating part, and the operation of the water supply and the drain, when rinsing Provided is a laundry treatment apparatus in which water is continuously sprayed from the spraying device in a state in which the drain part is closed, and the drum and the rotating part are rotated in the same direction.

In addition, there is provided a laundry treatment apparatus in which the RPMs of the drum and the rotating part are variable when water is continuously sprayed from the spraying device in a state in which the draining part is closed.

In addition, the control unit controls the drum and the rotating unit to perform a first rotation to form an ascending water flow and to perform a second rotation to form a descending water flow after the first rotation, and the drum and the rotating unit to the first rotation Provided is a laundry treatment apparatus in which rotation and the second rotation are alternately performed.

In addition, there is provided a laundry treatment apparatus in which the RPM of the drum and the rotating unit is repeatedly increased and decreased.

In addition, the control unit controls the drainage unit to drain the water in the tub to the outside of the cabinet after rinsing is completed, and the control unit controls the drum or the rotating unit to perform dehydration after the drainage is completed. processing equipment is provided.

According to embodiments of the present invention, it is possible to secure rinsing performance while using a small amount compared to the deep rinse method.

In addition, rinsing may be performed while evenly distributing the fabric.

In addition, even when rinsing is performed using a spraying device, the water scorching phenomenon can be prevented by adjusting the rotational speed of the drum and the rotating part.

1 is a view showing the inside of a clothes treatment apparatus according to an embodiment of the present invention.
2 is a view illustrating a rotating shaft coupled to a drum and a rotating unit in the laundry treatment apparatus according to an embodiment of the present invention.
3 is a perspective view illustrating a rotating part of a laundry treatment apparatus according to an embodiment of the present invention.
4 is a view showing a blade made of a plurality of divided bodies in a laundry treatment apparatus according to another embodiment of the present invention.
5 is a view showing a drum and a rotating unit in the laundry treatment apparatus according to an embodiment of the present invention.
6 is a view showing an injector according to an embodiment of the present disclosure;
Figure 7 is a view showing a state in which water is sprayed from the spraying device to the drum according to an embodiment of the present disclosure;
8 is a view showing a rinsing cycle of a conventional laundry treatment apparatus;
9 is a diagram illustrating a control method of a laundry treatment apparatus according to an embodiment;
10 is an operation diagram of the control method shown in FIG.
11 is a view illustrating a series of washing processes of the laundry treatment apparatus according to an embodiment;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, devices, and/or systems described herein. However, this is merely an example, and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. And, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification. The terminology used in the detailed description is for the purpose of describing embodiments of the present invention only, and should in no way be limiting. Unless explicitly used otherwise, expressions in the singular include the meaning of the plural. In this description, expressions such as “comprising” or “comprising” are intended to indicate certain features, numbers, steps, acts, elements, some or a combination thereof, one or more other than those described. It should not be construed to exclude the presence or possibility of other features, numbers, steps, acts, elements, or any part or combination thereof.

1 shows the inside of the laundry treatment apparatus 1 according to an embodiment of the present invention. The laundry treatment apparatus 1 may include a cabinet 10 , a tub 20 , and a drum 30 .

The cabinet 10 may be provided in any shape as long as it can accommodate the tub 20 , and FIG. 1 illustrates an example in which the cabinet 10 forms the exterior of the laundry treatment apparatus 1 . did it

Clothing openings 12 for supplying clothes to the drum 30 or for taking out clothes stored in the drum 30 to the outside may be formed in the cabinet 10, and to open and close the clothes openings 12 A clothing door 13 for this may be provided.

In FIG. 1 , a clothing opening 12 is formed on the upper surface 11 of the cabinet 10 according to an embodiment of the present invention, and a clothing door 13 for opening and closing the clothing opening 12 on the upper surface 11 . ) is shown. However, the clothing opening 12 and the clothing door 13 are not necessarily limited to being provided on the upper surface 11 of the cabinet 10 .

The tub 20 is a means for storing water necessary for washing clothes, and the tub 20 may be provided with a tub opening 22 communicating with the clothes opening 12 . For example, one side of the tub 20 may be opened to form the tub opening 22 , and at least a portion of the tub opening 22 is positioned to face the clothing opening 12 so that the clothing opening 12 and can be communicated.

1 shows a clothes treatment apparatus 1 of a top-loading method according to an embodiment of the present invention. Accordingly, in FIG. 1 , an upper surface of the tub 20 is opened to form a tub opening 22, and the tub The opening 22 is positioned below the clothing opening 12 to communicate with the clothing opening 12 .

The tub 20 is fixed inside the cabinet 10 through a tub 20 support part, and the tub 20 support part may be provided in a structure capable of damping vibrations generated in the tub 20 .

The tub 20 is supplied with water through the water supply unit 60, the water supply unit 60 may be provided as a water supply pipe connecting the water supply source and the tub 20, and a valve for opening and closing the water supply pipe.

The laundry treatment apparatus 1 according to an exemplary embodiment of the present invention may include a detergent supply device capable of storing detergent and supplying the detergent through the tub 20 . The water supply unit 60 supplies water to the detergent supply device, so that water passing through the detergent supply device may be supplied to the tub 20 together with the detergent.

In addition, the laundry treatment apparatus 1 according to an embodiment of the present invention may include a water spraying device for spraying water into the tub 20 through the tub opening 22 . The water supply unit 60 may be connected to the water spraying device to supply water directly into the tub 20 through the water spraying device.

The water stored in the tub 20 is discharged to the outside of the cabinet 10 through the drain 65 , and the drain 65 is a drain pipe that guides the water inside the tub 20 to the outside of the cabinet 10 . , may be provided as a drain pump or drain valve provided in the drain pipe.

The drum 30 may be rotatably provided inside the tub 20 . The drum 30 may be provided to have a circular cross-section in order to be rotatable inside the tub 20 . For example, the drum 30 may be provided in a cylindrical shape as shown in FIG. 1 .

The drum 30 may be provided with an opening located below the tub opening 22 and communicating with the inlet opening. As described later, one side of the drum 30 may be opened to form an open surface 31 , and the open surface 31 may correspond to the opening of the drum 30 .

On the outer peripheral surface of the drum 30, a plurality of drum 30 through-holes communicating the inside and the outside of the drum 30, that is, the inside of the drum 30 and the inside of the tub 20 divided by the drum 30 This may be provided. Accordingly, the water supplied to the tub 20 may be supplied into the drum 30 in which clothes are stored through the through hole of the drum 30 .

The drum 30 may be rotated by the driving unit 50 . The driving unit 50 is provided to pass through a motor providing a rotational force, a stator that is fixed to the outside of the tub 20 and forms a rotating magnetic field when current is supplied, a rotor that rotates by the rotating magnetic field, and the tub 20 It may be provided as a rotating shaft 40 connecting the drum 30 and the like to the rotor.

As shown in FIG. 1 , the rotation shaft 40 may be provided to form a right angle with respect to the bottom surface 33 of the tub 20 . In this case, the clothing opening 12 is the upper surface of the cabinet 10 . 11 , the tub opening 22 may be provided on the upper surface of the tub 20 , and the drum 30 opening may be provided on the upper surface of the drum 30 .

On the other hand, when the drum 30 rotates with the clothes concentrated in a certain area inside the drum 30 , a state (unbalance) of dynamic balance occurs in the drum 30 . When the unbalanced drum 30 rotates, the drum 30 vibrates and rotates by the centrifugal force acting on the clothes. The vibration of the drum 30 is transmitted to the tub 20 or the cabinet 10 to reduce noise. may cause problems.

In order to prevent such a problem, the present invention may further include a balancer 39 for controlling the unbalance of the drum 30 by generating a force that offsets or attenuates the centrifugal force acting on the clothes.

Meanwhile, referring to FIG. 1 , a space in which water can be stored may be formed in the tub 20 , and the drum 30 may be rotatably provided inside the tub 20 . The drum 30 may include an open surface 31 through which clothes enter and exit, and a bottom surface 33 located on the opposite side of the open surface 31 .

1 shows an upper surface of the drum 30 corresponding to the open surface 31 and a lower surface corresponding to the bottom surface 33 of the drum 30 according to an embodiment of the present invention, as described above. The open surface 31 may correspond to a surface through which clothes inputted through the clothing opening 12 of the cabinet 10 and the tub opening 22 of the tub 20 pass.

Meanwhile, the water supply unit 60 may be provided to supply water into the tub 20 by being connected to a means such as a detergent supply device or a water spray device, as described above. On the other hand, an embodiment of the present invention may include a control unit 70 that controls the water supply unit 60 to adjust the water supply amount in the washing process.

The control unit 70 is provided to adjust the amount of water supplied to the tub 20 in the washing process or the rinsing process, etc. Alternatively, it may be determined through the load of the driving unit 50 .

The control unit 70 may be provided to control the water supply unit 60 according to any one of a plurality of water supply amounts in advance, and based on a command selected by a user during a washing process, etc.

Meanwhile, as shown in FIG. 1 , an embodiment of the present invention may further include a rotating unit 100 . The rotating part 100 may be rotatably installed on the bottom surface 33 inside the drum 30 .

In an embodiment of the present invention, the drum 30 and the rotating unit 100 may be provided to be rotatable, respectively. The rotation of the drum 30 and the rotating unit 100 creates a water flow, and friction or collision with the laundry may occur, so that laundry or rinsing may be performed.

Meanwhile, FIG. 2 shows a state of the rotating shaft 40 coupled to the drum 30 and the rotating unit 100 according to an embodiment of the present invention.

The drum 30 and the rotating unit 100 may be respectively connected to the driving unit 50 through the rotating shaft 40 to receive rotational force. In an embodiment of the present invention, the drum 30 is rotated by coupling a first rotation shaft 41 to the bottom surface 33 , and the rotation unit 100 passes through the bottom surface 33 and the first rotation shaft A second rotation shaft 42 that is separately rotated with respect to 41 may be coupled and rotated.

The second rotation shaft 42 may be rotated in the same direction as the first rotation shaft 41 or rotated in the opposite direction. The first rotating shaft 41 and the second rotating shaft 42 may be provided to receive power through one driving unit 50 , and the driving unit 50 is a first rotating shaft 41 and a second rotating shaft 42 . It may be connected to a gear set 45 capable of distributing power and controlling the direction of rotation.

That is, the drive shaft of the driving unit 50 is connected to the gear set 45 to transmit power to the gear set 45 , and the first rotation shaft 41 and the second rotation shaft 42 are each connected to the gear set 45 . ) to receive power.

The first rotation shaft 41 may be provided as a hollow shaft, and the second rotation shaft 42 may be provided as a solid shaft disposed inside the first rotation shaft 41 . Accordingly, in one embodiment of the present invention, power can be effectively provided to the first rotation shaft 41 and the second rotation shaft 42 parallel to each other through one driving unit 50 .

2 shows the gear set 45 of the planetary gear type, and the drive shaft, the first rotation shaft 41 and the second rotation shaft 42 are respectively coupled to the gear set 45 is shown. Referring to FIG. 2 , the rotational relationship between the first rotational shaft 41 and the second rotational shaft 42 in an embodiment of the present invention will be described as follows.

The driving shaft of the driving unit 50 may be connected to the central sun gear in the planetary gear set 45 . When the drive shaft rotates, the gear set 45 may rotate with the satellite gear and the ring gear by the rotation of the sun gear.

The first rotation shaft 41 coupled to the bottom surface 33 of the drum 30 may be connected to a ring gear positioned at the outermost portion of the gear set 45 . The second rotation shaft 42 coupled to the rotation unit 100 may be connected to a satellite gear disposed between the sun gear and the ring gear in the gear set 45 .

Meanwhile, the gear set 45 may include a first clutch element 46 and a second clutch element 47 that can limit the rotation of each rotation shaft 40 as needed. The gear set 45 may further include a gear housing fixed to the tub 20, and the first clutch element 46 is provided in the gear housing to selectively rotate the first rotation shaft 41 connected to the ring gear. It may be provided to limit.

The second clutch element 47 may be provided to mutually restrict or release the rotation of the drive shaft and the ring gear. That is, the rotation of the ring gear or the rotation of the first rotation shaft 41 may be synchronized with or desynchronized with the driving shaft by the second clutch element 47 .

In an embodiment of the present invention, when the first clutch element 46 and the second clutch element 47 are in the released state, the first rotational shaft 41 and the second rotational shaft 42 are rotate in opposite directions to each other. That is, the drum 30 and the rotating unit 100 rotate in opposite directions.

On the other hand, when the first clutch element 46 is in the restricted state, the rotation of the ring gear and the first rotation shaft 41 is limited and the rotation of the second rotation shaft 42 is made. That is, the drum 30 is in a stationary state and only the rotating part 100 rotates. In this case, the rotational direction of the rotating unit 100 may be determined according to the rotating direction of the driving unit 50 .

On the other hand, when the second clutch element 47 is in a restricted state, the rotation between the drive shaft and the first rotation shaft 41 is mutually restricted, and the drive shaft, the first rotation shaft 41 and the second rotation shaft ( 42) can be constrained to each other. That is, the drum 30 and the rotating part 100 rotate in the same direction as each other.

When the first clutch element 46 and the second clutch element 47 are in the restricted state at the same time, the drive shaft, the first rotation shaft 41 and the second rotation shaft 42 are all in a stationary state. The controller 70 may implement a necessary driving state by appropriately controlling the driving unit 50 , the first clutch element 46 , the second clutch element 47 , etc. in the washing process and the rinsing process.

Meanwhile, FIG. 3 is a perspective view of the rotating part 100 according to an embodiment of the present invention. In an embodiment of the present invention, the rotating part 100 may include a bottom part 110 , a pillar part 150 , and a blade 170 .

The bottom part 110 may be located on the bottom surface 33 of the drum 30 . The bottom part 110 may be positioned in parallel with the bottom surface 33 of the drum 30 to be rotatable on the bottom surface 33 . The aforementioned second rotation shaft 42 may be coupled to the bottom part 110 .

That is, the first rotating shaft 41 is coupled to the drum 30 , and the second rotating shaft 42 provided as a solid shaft inside the hollow first rotating shaft 41 is the bottom surface 33 of the drum 30 . ) through and may be coupled to the bottom portion 110 of the rotating unit 100 .

The rotating part 100 coupled to the second rotating shaft 42 may rotate independently with respect to the drum 30 . That is, the rotating unit 100 may be rotated in the same direction as the drum 30 or rotated in the opposite direction, and this rotating direction may be selected by the control unit 70 or the like as necessary.

The first rotation shaft 41 may be coupled to the center of the bottom surface 33 of the drum 30 . 1 shows a state in which the upper surface of the drum 30 is opened to form an open surface 31 and the lower surface corresponds to the bottom surface 33 according to an embodiment of the present invention.

That is, the laundry treatment apparatus 1 shown in FIG. 1 corresponds to a top loader, and the drum 30 may have a side surface connecting the upper surface and the lower surface, that is, an outer peripheral surface, and the drum 30 may be rotated for balancing the rotation. The cross-section may have a circular shape. That is, the drum 30 may have a cylindrical shape.

The bottom part 110 of the rotating part 100 may be coupled to the second rotating shaft 42 in the center thereof. The bottom portion 110 may have a second rotational shaft 42 coupled to one surface, that is, a lower surface, facing the drum 30 , and the second rotational shaft 42 penetrates the center of the drum 30 to the bottom portion 110 . can be coupled to

The bottom part 110 may have a circular cross-section in consideration of rotational balancing. The bottom part 110 may be rotated about the second rotation shaft 42 coupled to the center, and the center of the bottom part 110 may coincide with the center of the drum 30 .

The bottom part 110 may have a basic disk shape, and a specific shape may be determined in consideration of the connection relationship between the protrusion part 130 and the pillar part 150 , as will be described later.

The bottom 110 may be provided to cover at least a portion of the drum 30 . The bottom part 110 may be provided to facilitate rotation by being spaced apart between the lower surface and the drum 30 . However, the separation distance between the bottom part 110 and the bottom surface 33 of the drum 30 may be varied as needed.

Meanwhile, as shown in FIG. 3 , the pillar part 150 may have a shape protruding from the bottom part 110 toward the open surface 31 . The pillar part 150 may be integrally formed with the bottom part 110 or may be separately manufactured and coupled to the bottom part 110 .

The pillar part 150 may be rotated together with the bottom part 110 . The pillar part 150 may extend from the center of the bottom part 110 toward the open surface 31 . 1 illustrates a pillar portion 150 that protrudes upwardly from the bottom portion 110 according to an embodiment of the present invention. The pillar part 150 may have a circular cross-section, and the protrusion height L1 from the bottom part 110 may vary.

The pillar portion 150 may have a curved side surface to form an outer circumferential surface 162 , the rotating unit 100 may include a blade 170 , and the blade 170 may have an outer circumferential surface 162 of the pillar portion 150 . ) can be provided.

The blade 170 may be provided to protrude from the pillar part 150 , and may extend along the pillar part 150 to form a water flow inside the drum 30 when the pillar part 150 rotates.

The blade 170 is provided in plurality and is spaced apart along the circumferential direction (C) of the pillar part 150, and the bottom part ( 110) side may extend toward the open surface 31 side.

Specifically, as shown in FIG. 3 , the blade 170 may extend approximately along the longitudinal direction L of the pillar part 150 . The blade 170 may be provided in plurality, and the number may vary as needed. 3 shows a state in which three blades 170 are provided on the outer circumferential surface 162 of the pillar part 150 according to an embodiment of the present invention.

The blades 170 may be uniformly disposed along the circumferential direction (C) of the pillar portion (150). That is, the distance between the blades 170 may be the same. When viewed from the open surface 31 of the drum 30 , the blades 170 may be spaced apart from each other while forming an angle of 120 degrees with respect to the center O of the column part 150 .

The blade 170 may extend along a direction inclined with respect to the longitudinal direction (L) or the circumferential direction (C) of the column part 150 . The blade 170 may extend obliquely from the bottom 110 side to the open surface 31 side on the outer peripheral surface 162 of the pillar part 150 . The extended length L3 of the blade 170 may vary as needed.

As the blade 170 extends in an inclined direction, when the rotating part 100 is rotated, a rising or falling water flow may be formed in the water inside the drum 30 by the blade 170 of the pillar part 150 . .

For example, when the blade 170 is inclined toward one direction C1 of the circumferential direction C of the column part 150 from the bottom part 110 side and extends toward the open surface 31 side, the rotating part 100 is When rotating in the one direction (C1), a descending water flow can be formed by the inclined shape of the blade 170, and when the rotating part 100 is rotated in the other direction (C2), an ascending water flow is formed by the blade 170. can

In one embodiment of the present invention, one direction (C1) and the other direction (C2) with respect to the circumferential direction (C) of the column part 150 correspond to opposite directions with respect to the outer circumferential surface 162 of the column part 150 and , may be in a direction perpendicular to the longitudinal direction L of the pillar portion 150 .

One direction C1 and the other direction C2 with respect to the circumferential direction C of the column part 150 may correspond to the rotation direction of the rotating part 100 . Since the rotational direction of the rotating part 100 and the circumferential direction C of the column part 150 are parallel to each other, the rotating part 100 may be rotated in the one direction C1 or the other direction C2.

In one embodiment of the present invention, as a plurality of blades 170 are provided and spaced apart from each other, the water flow can be uniformly generated by the column poles, and by the inclined extension form of the blades 170, the rotation unit 100 is During rotation, not a simple rotational water flow, but an ascending water flow in which the water under the drum 30 moves to the upper side or a descending water flow in which the water above the drum 30 moves to the lower side may be generated.

According to an embodiment of the present invention, it is possible to form a three-dimensional water flow through the rotating unit 100, and thus the washing efficiency for laundry can be greatly improved in the washing process. In addition, various washing methods can be implemented by appropriately utilizing the rising water flow and the falling water flow.

The blade 170 of the present invention may correspond to a screw type. That is, the blade 170 is provided in plurality and is spaced apart along the circumferential direction C of the pillar part 150 , and the open surface 31 is separated from one end 171 facing the bottom part 110 . It may extend to the other end 173 facing it in the form of a screw.

In other words, in one embodiment of the present invention, the pillar portion 150 has the plurality of blades from one end 152 toward the bottom 110 to the other end 154 toward the open surface 31 . A 170 may be wound around the outer circumferential surface 162 and extend.

On the other hand, referring to FIG. 3 , in one embodiment of the present invention, the blade 170 moves in one direction (C) of the column part 150 with respect to the longitudinal direction (L) of the column part 150 . C1) and may extend from the one end 171 to the other end 173.

That is, the blade 170 may be provided to be inclined in only one direction (C1) and not to be inclined in the other direction (C2). If the inclination direction of the blade 170 is changed to the other direction C2 during extension, a portion of the blade 170 generates an ascending water flow and the remaining portion generates a descending water flow when the rotation unit 100 rotates. .

In this case, it may be difficult to maximize the effect of either the rising or falling of water because the rising water flow and the falling water flow may occur simultaneously in the rotation of the rotating part 100 in one direction (C1).

Accordingly, in one embodiment of the present invention, the blade 170 extends obliquely with respect to the longitudinal direction (L) of the column part 150, and is inclined toward one direction (C1) of the circumferential direction (C) of the column part 150 . It is extended to maximize the water flow characteristics for rotation in one direction (C1) and the other direction (C2) of the rotation unit 100 . The one direction C1 may be any one of a clockwise direction and a counterclockwise direction, and the other direction C2 may be the other one.

Meanwhile, as shown in FIG. 3 , in an embodiment of the present invention, the blade 170 may continuously extend from the one end 171 to the other end 173 . That is, the blade 170 may extend continuously without being cut between the one end 171 and the other end 173 .

In addition, the blade 170 may extend from the one end 171 to the other end 173 to be continuously inclined in the longitudinal direction L of the pillar portion 150 . That is, the blade 170 may be provided in an inclined shape as a whole without a portion parallel to the longitudinal direction L of the pillar portion 150 .

When at least a part of the blade 170 is parallel to the longitudinal direction (L) or the circumferential direction (C) of the column part 150, it may be disadvantageous to the formation of an ascending or descending water flow according to the rotation of the column part 150, Accordingly, in one embodiment of the present invention, the blade 170 may be provided to be inclined with respect to the longitudinal direction L of the pillar portion 150 over the entire length (L2).

Meanwhile, another embodiment of the present invention is shown in FIG. 4 . Referring to FIG. 4 , in another embodiment of the present invention, the blade 170 may include a plurality of divided bodies 175 separated between the one end 171 and the other end 173 .

In another embodiment of the present invention, the resistance of water acting on the blade 170 during rotation of the rotating unit 100 may be reduced, and thus the load of the driving unit 50 with respect to the rotation of the rotating unit 100 may be reduced. .

4 shows a state in which one blade 170 is composed of two divided bodies 175 according to another embodiment of the present invention. However, in FIG. 4 , the two divided bodies 175 positioned side by side in the vertical direction do not constitute one blade 170 together, and the divided body 175 located at the upper part in FIG. 4 is any one of the blades. (170) Corresponds to the upper part, and the divided body 175 located in the lower part corresponds to the lower part of the blade 170 adjacent to any one of the blades 170.

In the present invention, whether the blade 170 is continuously formed as a whole or formed of a plurality of divided bodies 175 may be selected in consideration of the load of the driving unit 50 and washing efficiency, etc., which are typically expected in the laundry treatment apparatus 1 . can

Meanwhile, FIG. 5 shows the rotating part 100 disposed inside the drum 30 according to an embodiment of the present invention.

The length L1 of the pillar 150 may be related to washing performance and the load of the driving unit 50 . For example, if the length L1 of the pillar 150 is increased, washing performance may be improved, but an excessive load may be applied to the driving unit 50 , and when the length L1 of the pillar 150 is decreased, the driving unit 50 may be ) can be reduced, but washing performance can also be reduced.

In consideration of the above relationship, in one embodiment of the present invention, the ratio between the length L1 of the column part 150 and the diameter W2 of the bottom part 110 may be determined. If the length L1 of the pillar portion 150 is too short, when the amount of laundry is large and the amount of water supplied is large, the area where the water flow is formed by the pillar portion 150 and the blade 170 is reduced compared to the overall washing performance. can be lowered

If the length L1 of the pillar portion 150 is excessively long, the surplus length of the pillar portion 150 that does not come into contact with laundry and water in the washing process becomes excessive, leading to material loss and unnecessary load increase of the driving unit 50 . can

In addition, as will be described later, the bottom part 110 has a protrusion 130 and the like to contribute to the formation of a water flow, and thus the length relationship between the bottom part 110 and the pillar part 150 is determined by the bottom part 110 . It corresponds to determining the influence of the water flow and the influence of the water flow by the column part 150 .

For the various diameters W2 of the bottom 110 and the length L1 of the pillar 150 , the length L1 of the pillar 150 is 0.8 times the diameter W2 of the bottom 110 . In the case of , the rising and falling of laundry can occur effectively together with water, and when the length (L1) of the column part 150 is 1.2 times or less with respect to the diameter (W2) of the bottom part 110, the rotation part 100 for rotation The load of the driving unit 50 may be properly maintained.

The diameter W2 of the bottom part 110 is the diameter of the pillar part 150 , the sizes of the tub 20 and the drum 30 of the laundry treatment apparatus 1 , and the allowable amount of laundry in the laundry treatment apparatus 1 . And it may be variously determined in consideration of the amount of water supplied.

The length (L1) of the column part 150 is the diameter (W1) of the drum 30, as well as the height of the drum 30, the diameter of the column part 150, the inclination angle (A) of the blade 170, etc. can be determined in various ways.

One embodiment of the present invention determines the allowable ratio between the length L1 of the column part 150 and the diameter W2 of the bottom part 110, and accordingly, the water flow by the column part 150 is effectively formed while It is possible to implement the rotation unit 100 in which the load of the driving unit 50 is within an allowable range.

Meanwhile, in an embodiment of the present invention, the diameter W2 of the bottom part 110 may be 0.7 times or more and 0.9 times or less of the diameter W1 of the drum 30 . However, the present invention is not necessarily limited thereto.

Since the bottom 110 is positioned on the bottom surface 33 of the drum 30 and rotates, the diameter W2 of the bottom 110 with respect to the diameter W1 of the drum 30 needs to be considered. , when the diameter W2 of the bottom part 110 is too small, the influence of the water flow by the rotation of the bottom part 110 may be too small, and when the diameter W2 of the bottom part 110 is too large, the laundry is caught This is easy to occur and it is disadvantageous to rotation according to the load of the driving unit 50 and the like.

In consideration of the above relationship, in one embodiment of the present invention, the diameter W2 of the bottom part 110 is provided to be 0.7 times or more of the diameter W1 of the drum 30, and the bottom part (W2) for the entire drum 30 110) In order to be effective in the effect of the water flow according to the rotation, the diameter W2 of the bottom part 110 is provided to be 0.9 times or less of the diameter W1 of the drum 30, so that it is strong against pinching of laundry and the load of rotation can be minimized.

The diameter W1 of the drum 30 may be variously determined in consideration of the capacity or water supply amount allowed by the laundry treatment apparatus 1 and the relationship with the tub 20 .

On the other hand, in an embodiment of the present invention, the blade 170 has a height L2 from one end 171 to the other end 173 based on the longitudinal direction L of the pillar portion 150 . It may be provided to be 0.5 times or more of the total height L1 of the pillar part 150 .

The height L4 of one end 171 and the height of the other end 173 of the blade 170 may be defined as a vertical distance with respect to the upper surface of the bottom 110 as shown in FIGS. 5 and 6 . A height L2 from one end 171 to the other end 173 of the blade 170 may be defined as the height of the blade 170 .

The height L2 of the blade 170 may be determined in consideration of the relationship between the amount of rise and fall of the water flow by the blade 170 and the load of the driving unit 50 .

For example, as the height L2 of the blade 170 is lower, it means that the area in which the blade 170 is formed is reduced, and the amount of rise and fall of the water flow may be reduced.

In addition, as the height L2 of the blade 170 is higher, the forming force of the water flow by the blade 170 becomes stronger, but the load of the driving unit 50 may be increased. In addition, the height L2 of the blade 170 may be related to the inclination angle A of the blade 170 , the diameter of the column 150 , and the like.

In an embodiment of the present invention, the height L2 of the blade 170 may be provided to be at least 0.5 times the length L1 of the pillar portion 150 . Accordingly, in one embodiment of the present invention, the blade 170 can form an effective rising water flow and an effective falling water flow inside the drum 30 when the column part 150 rotates. When the height L2 of the blade 170 is less than 0.5 times the length L1 of the column part 150 , it may be difficult to effectively form a water flow by the blade 170 .

The height L2 of the blade 170 is the size of the drum 30, the diameter W2 of the bottom 110, the height L1 of the column 150, the height of the protrusion 130, the cap 165 may be variously determined according to the location of the

On the other hand, in an embodiment of the present invention, the blade 170 has a length L3 extending from the one end 171 to the other end 173 in the extending direction in the longitudinal direction ( Based on L), the height L2 from the one end 171 to the other end 173 may be 1.4 times or more and 1.8 times or less. However, this means an optimal design value and is not necessarily limited thereto.

A length L3 extending from one end 171 to the other end 173 along the extension direction of the blade 170 may be defined as the extension length of the blade 170 , and one end 171 of the blade 170 . ) to the other end 173 , the height L2 may be defined as the height of the blade 170 .

For example, when the number of turns in which the blade 170 is wound around the column 150 at the same height L2 of the blade 170 is increased, the extended length L3 of the blade 170 is increased.

When the extension length L3 of the blade 170 according to the height L2 of the blade 170 becomes longer, the contact area between the blade 170 and water is increased, and the inclination angle A of the blade 170 can be increased. Therefore, although the influence of water flow formation on water may be increased, the load of the driving unit 50 may also be increased.

On the other hand, when the extended length L3 of the blade 170 is excessively reduced, the load of the driving unit 50 may be reduced, but the water flow forming ability may be excessively reduced, thereby reducing washing efficiency.

In one embodiment of the present invention, the extended length (L3) of the blade 170 is provided to be 1.4 times or more with respect to the height (L2) of the blade 170, the inclination angle (A) of the blade 170 to effectively form a water flow It can be secured and can be effectively secured with a contact area between the blade 170 and water.

In addition, in one embodiment of the present invention, the extended length L3 of the blade 170 is provided to be 1.8 times or less with respect to the height L2 of the blade 170 so that the load of the driving unit 50 does not deviate from the allowable range. It may be advantageous to form a rotational water flow of water by 170 .

The extended length L3 of the blade 170 is determined by the height L2 of the blade 170, the diameter of the pillar 150, the inclination angle A of the blade 170, the load amount of the driving unit 50, the water flow formation level, etc. may be determined in various ways.

Meanwhile, as described above, an embodiment of the present invention may include a water supply unit 60 and a control unit 70 . The water supply unit 60 is provided to supply water into the tub 20, and the controller 70 may control the water supply unit 60 during the washing process to adjust the water supply amount.

The control unit 70 may control the water supply unit 60 to supply a preset amount of water supply to the inside of the tub 20 based on the amount of laundry selected by the user by manipulating the operation unit during the washing process.

For example, when the user selects the minimum amount of laundry or when the amount of laundry is recognized as the minimum amount through a sensor, etc., the control unit 70 sets the minimum amount of water supply corresponding to the minimum amount of laundry, and the control unit 70 controls the tub ( 20) The water supply unit 60 may be controlled so that the minimum amount of water is supplied to the inside.

In addition, when the amount of laundry is determined as the maximum amount by the user or the sensor, the maximum amount of water supply corresponding to the maximum amount of laundry is preset in the control unit 70 , and the control unit 70 controls the maximum amount of water supplied in the tub 20 . The water supply unit 60 may be controlled to supply water.

Minimum standards for the amount of laundry may vary. For example, in the standard washing capacity test in the United States, the amount of laundry of 3 kg or 8 lb is suggested as a small amount, and in one embodiment of the present invention, the minimum amount of water supply may be a preset amount of water supply for the amount of laundry corresponding to 8 lb. there is. The maximum criterion for the amount of laundry may also be determined variously.

In an embodiment of the present invention, the water surface S1 corresponding to the minimum water supply amount and the water surface S2 corresponding to the maximum water supply amount are shown in FIG. 5 . Referring to FIG. 5 , in one embodiment of the present invention, the control unit 70 controls the water supply unit 60 so that the water supply amount is greater than or equal to a preset minimum water supply amount in the washing process, and the blade 170 is the The height L4 of the one end 171 with respect to the bottom 110 may be provided to be less than or equal to the height of the water surface S1 corresponding to the minimum water supply.

When the blade 170 is not submerged in water, even if the rotating part 100 rotates, the rising water flow and the falling water flow by the blade 170 do not occur, which is disadvantageous. Accordingly, in one embodiment of the present invention, at least the minimum water supply amount is supplied to the inside of the tub 20 during the washing process, and the one end 171 of the blade 170 is always located below the water surface despite the change in the water supply amount. It may be located below the water surface (S1) height for a preset minimum water supply amount to be submerged in the.

As described above, the minimum water supply amount may be a water supply amount for 8 lb laundry, which is a standard for a small load test in an authorized washing test in the United States.

Meanwhile, in an embodiment of the present invention, the blade 170 may have a height L4 of the one end 171 of 0.25 times or less of a diameter W1 of the drum 30 . This means an optimal design value and is not necessarily limited thereto.

In one embodiment of the present invention, one end 171 of the blade 170 is always submerged in water in the washing process or rinsing process, so that the water flow forming effect by the rotation of the rotating part 100 can occur effectively, and this To this end, the height L4 of one end 171 of the blade 170 may be designed to be 0.25 times the diameter W1 of the drum 30 .

The height L4 of the one end 171 of the blade 170 may be specifically determined according to the minimum water supply amount and the diameter W1 of the drum 30 . For example, the greater the minimum water supply amount, the higher the height L4 of the one end 171 of the blade 170 may be determined, and the greater the diameter W1 of the drum 30, the greater the height of the one end 171 of the blade 170 ( L4) can be lower.

In one embodiment of the present invention, as described above, the minimum water supply amount may be the water supply amount for the 8 lb laundry amount, and considering the diameter (W1) of the drum 30, which is usually determined for this, the blade 170, one end ( The height L4 of 171 may be located below the water surface S1 at 0.25 times or less of the diameter W1 of the drum 30 .

When the height L4 of the one end 171 of the blade 170 exceeds 0.25 times the diameter W1 of the drum 30, the one end of the blade 170 is higher than the height of the water surface S1 of the minimum water supply amount ( In order to decrease the height L4 of the 171 , the diameter W1 of the drum 30 needs to be smaller than necessary.

As shown in FIG. 5 , when the pillar part 150 is provided to protrude upward from the bottom part 110 , the height L4 of the one end 171 of the blade 170 corresponds to the vertical upward distance from the bottom part 110 . can be

In one embodiment of the present invention, as the height L4 of the one end 171 of the blade 170 is provided to be 0.25 times or less with respect to the diameter W1 of the drum 30, the blade 170 is The one end 171 may be in contact with water and at the same time the diameter W1 of the drum 30 may be sufficiently secured, which may be advantageous for washing performance.

On the other hand, in an embodiment of the present invention, the blade 170 has one end 171 located below the water surface of the water stored in the tub 20 during the washing process, and the other end 173 is above the water surface. can be located in

5 shows the height of the water surface S1 at the minimum water supply and the height of the water surface S2 at the maximum water supply according to an embodiment of the present invention, and one end 171 of the blade 170 is It is located closer to the bottom 110 than the water level S1, and the other end 173 of the blade 170 is located further from the bottom 110 than the water level S2 according to the maximum water supply amount. has been

In one embodiment of the present invention, the other end 173 of the blade 170 is always provided to be spaced apart from the surface of the water stored in the tub 20 toward the open surface 31, so that it is stored in the tub 20 during the washing process. Even if the amount of water is changed, the water flow by the blade 170 can always be formed up to the top of the water.

The position of the other end 173 of the blade 170 may be determined in consideration of various factors, such as the diameter W1 of the drum 30 , the maximum water supply amount, and the length L1 of the column 150 .

Meanwhile, in the laundry treatment apparatus 1 according to an embodiment of the present invention, the control unit 70 controls the water supply unit 60 so that the water supply amount is equal to or less than a preset maximum water supply amount during the washing process, and the blade ( 170) may be provided such that the height of the other end 173 with respect to the bottom 110 is greater than or equal to the height of the water surface S2 corresponding to the maximum water supply.

The amount of water supplied to the tub 20 may vary depending on the amount of laundry or the result of the user operating the control unit, and an embodiment of the present invention relates to the maximum amount of water supplied to the tub 20 during the washing process. By allowing the other end 173 of the blade 170 to be positioned above the water level S2, even if the amount of water supplied changes, the water flow by the blade 170 can be formed up to the upper portion of the water stored in the tub 20. .

Figure 6 shows an injection device according to an embodiment of the present disclosure. Figure 6 (a) is a front view of the injection device, Figure 6 (b) is a bottom view of the injection device, Figure 6 (c) shows a side cross-sectional view of the injection device.

6(a), 6(b), and 6(c), the injector 80 is connected to the water supply unit 60 to receive water supplied from the water supply unit 60. The nozzle supply It may include a pipe 81 and a nozzle unit 87 coupled to the nozzle supply pipe 81 to spray water supplied through the nozzle supply pipe 81 into the drum 30 .

The nozzle supply pipe 81 may be coupled through the clothing opening 12 . One end of the nozzle supply pipe 81 may pass through the clothing opening 12 and be connected to the water supply unit 60 . Water supplied from the water supply unit 60 may be supplied to the injection device 80 through the nozzle supply pipe 81 . However, it is also possible that the nozzle supply pipe 81 does not pass through the clothes opening 12 , but the water supply unit 60 passes through the clothes opening 12 and is coupled to the nozzle supply pipe 81 . Various structures in which the nozzle supply pipe 81 can be supplied with water from a water supply source through the water supply unit 60 may be applied.

The water supplied to the nozzle supply pipe 81 may flow to the nozzle unit 87 along the nozzle supply pipe 81 . A nozzle branching part 85 may be formed at one end of the nozzle supply pipe 81 located in a direction away from the water supply part 60 . Water passing through the nozzle branching part 85 may flow along the nozzle part 87 . With the nozzle branching part 85 as a starting point, the nozzle part 87 may include a first nozzle 871 and a second nozzle 873 that separate the flow of water in different directions. The direction of the water flowing along the nozzle supply pipe 81 from the nozzle branching part 85 as a starting point may change rapidly. For example, water flowing in the direction parallel to the ground in the nozzle supply pipe 81 may flow in a direction perpendicular to the ground while passing the nozzle branch 85 . Since the above case is merely an example, water may flow in various paths and directions.

Since the first nozzle 871 and the second nozzle 873 guide water in different directions, they may be formed to be spaced apart from each other. The first nozzle 871 and the second nozzle 873 may receive external force and vibration due to the flow of a fluid generated therein, and thus structural stability may be deteriorated. In order to improve structural stability as described above, a nozzle connection part 86 for connecting the first nozzle 871 and the second nozzle 873 from the front may be formed. The nozzle connection part 86 is connected to the first nozzle 871 and the second nozzle 873 without affecting the internal flow path and the fluid flow of the first nozzle 871 and the second nozzle 873 . can be supported externally.

A spray mounting part 82 may be provided between the nozzle supply pipe 81 and the nozzle branch part 85 . The spray mounting part 82 may be manufactured in a circular shape having a diameter larger than the diameter of the flow path of the nozzle supply pipe 81 . The spray mounting part 82 may extend radially from one end of the nozzle supply pipe 81 to reinforce the bonding strength with the upper surface 11 of the cabinet. There is an effect of increasing the cross-sectional area to increase the friction surface with the upper surface 11 of the cabinet.

The spray mounting part 82 may increase the friction surface with the upper surface 11 of the cabinet, and may provide a surface on which the other coupling structure is formed. An elastic protrusion 84 formed to have an elastic force in the front-rear direction of the spray mounting part 82 may be provided on one side of the spray mounting part 82 . The elastic protrusion 84 may be coupled to a coupling groove formed on the upper surface 11 of the cabinet. When the elastic protrusion 84 is inserted into the coupling groove and rotated to the coupling position, the spray mounting part 82 can be firmly coupled to the upper surface 11 of the cabinet by the elastic force of the elastic protrusion.

A coupling protrusion 83 may be formed to protrude backward from the rear surface of the spray mounting part 82 . The coupling protrusion 83 may be formed to be inserted into the coupling groove formed on the upper surface 11 of the cabinet. The coupling protrusion 83 may have a small cross-sectional area in a portion extending from the rear surface of the spray mounting part 82 , and a large cross-sectional area in the protruding portion. The coupling groove of the upper surface 11 of the cabinet into which the coupling protrusion 83 is inserted is formed with a groove so that the coupling protrusion 83 can be inserted, and the width of the groove depends on the rotation direction of the coupling protrusion 83 . This can be reduced. Therefore, when the coupling protrusion 83 is initially inserted into the coupling groove, it can be easily inserted or withdrawn, but when rotating along the coupling groove after inserting the coupling protrusion 83 into the coupling groove, the coupling groove and the Due to the difference in the cross-sectional area of the coupling protrusion 83, the coupling protrusion 83 may not be easily drawn out from the coupling groove. In this way, the spray mounting part 82 may be coupled to the upper surface 11 of the cabinet. That is, the injection device 80 can be more firmly coupled to the upper surface 11 of the cabinet.

The injector 80 may be firmly coupled to the upper surface 11 of the cabinet as described above. However, it is not limited to being coupled to the upper surface 11 of the cabinet and may be coupled to various positions capable of spraying water into the drum 30 . The elastic protrusion 84 or the coupling protrusion 83 may be used as a method of strengthening the coupling.

Looking at the nozzle unit 87 , the nozzle unit 87 may include a first nozzle 871 and a second nozzle 873 that spray water in different directions. When it is required to spray water in various directions, the first nozzle 871 and the second nozzle 873 are not limited to, and may be formed to include a variety of nozzles.

A first jet port 872 and a second jet port 874 through which water is sprayed may be formed in the first nozzle 871 and the second nozzle 873 , respectively. Water that has passed through the first nozzle 872 or the second injection hole 874 may be introduced into the drum 30 under the influence of inertia and gravity.

Water sprayed through the first injection hole 872 and the second injection hole 874 may be sprayed in different directions. The water passing through the first jet port 872 or the second jet port 874 may be affected by various external forces, such as gravity, in addition to the jet force. Accordingly, the straightness of the sprayed water may be deteriorated. In addition, since the radial resistance disappears when the jetted water passes through the jetting hole, the jetted water expands in the radial direction as the distance from the jetting hole is increased. Therefore, when the sprayed water reaches the object, it can reach a larger area than the injection hole.

As described above, the first injection port 872 and the second injection port 874 may be injected in different directions, where the injection direction refers to the direction of the velocity that the fluid passing through the injection port has at the time of passage. there is. That is, when the injection hole is viewed as a plane, it may mean an average of the vector values of the velocity of the water particles existing on the plane.

In addition, the injection direction may refer to a direction normal to the plane when the first injection hole 872 or the second injection hole 874 is viewed in a plane. A normal line means a line perpendicular to a specific plane.

In the present specification, the injection direction may mean a direction of a normal line extending from the center of gravity of the injection hole as described above.

As mentioned above, the first nozzle and the second nozzle may spray the water supplied from the water supply unit 60 through the nozzle supply pipe 81 in different injection directions. In addition, rather than simply spraying in different directions, it is possible to spray in different directions based on the pillar part 150 installed inside the drum 30 .

When viewed from the injection device 80 in the direction of the pillar portion 150, the first nozzle 871 sprays water toward the drum 30 located on the left side of the pillar portion 150, and the The second nozzle may spray water toward the drum 30 located on the right side of the pillar part 150 . It is not simply limited thereto, and the first nozzle 871 sprays water toward the right space of the column part 150 and the second nozzle 873 toward the left space of the column part 150 . can The injection direction in which each nozzle sprays water may be appropriately selected.

As described above, when the first nozzle 871 sprays water toward the left side of the pillar part 150 , the sprayed water is applied to the bottom surface 33 of the drum or the inner circumferential surface of the drum 30 . can reach and scatter. The scattered water may reach the right side of the pillar part 150 . However, in this specification, spraying water in a specific direction will mean a direction at the time when water passes through the injection hole or a normal direction extending from the center of gravity of the injection hole as mentioned above, and the location where the sprayed water reaches can be understood independently of the injection direction.

That is, based on the pillar part 150 , the first nozzle 871 and the second nozzle 873 spray water into a different space of the drum 30 , and further inside the drum 30 . Water can be sprayed evenly. When water is uniformly sprayed into the drum 30 , it is possible to prevent a decrease in washing and rinsing efficiency due to concentration of water in a specific part.

7 (a), 7 (b), 7 (c) is a representation of the spray pattern of water sprayed from the spray device according to an embodiment of the present disclosure. 7(a) is a front view of the spray pattern, FIG. 7(b) is a side view of the spray pattern, and FIG. 7(c) is a top view of the spray pattern.

Assuming an imaginary plane S1 connecting the pillar part 150 and the injector 80 with reference to FIG. 7C , the space inside the drum 30 is the imaginary plane S1 . It may be divided into a first drum space R1 and a second drum space R2 divided by When the inside of the drum 30 is divided in this way, the first nozzle 871 and the second nozzle 873 spray the water supplied through the nozzle supply pipe 81 toward different spaces. can As described above, the spraying device 80 may spray water in various ways, but water may not be sprayed to the pillar part 150 and the blade 170 installed inside the drum 30 . . The spraying direction of the water sprayed from the nozzle part 87 may be designed so that it does not face the pillar part 150 or the blade 170 , and passes through the first spray hole 872 and the second spray hole 874 . It may be designed so that one water reaches the inside of the drum 30 without reaching the pillar 150 and the blade 170 .

However, even in this case, the water sprayed from the spraying device 80 may bounce off the inner peripheral surface of the drum 30 or the bottom surface 33 of the drum to reach the pillar part 150 or the blade 170 . . In this specification, "spraying water by avoiding the pillar 150 or the blade 170" refers to components other than the pillar 150 and the blade 170, such as the drum 30, primarily. It may include all of the water sprayed as being reflected and scattered to reach the pillar part 150 or the blade 170 .

6 and 7 ( a ), the first nozzle 871 constituting the nozzle part 87 of the injection device 80 according to an embodiment of the present disclosure is a circumferential surface of the drum 30 . The water supplied through the nozzle supply pipe 81 may be sprayed in a direction toward the In addition, the second nozzle 873 may spray the water supplied through the nozzle supply pipe 81 in a direction toward the bottom surface 33 of the drum.

As described above, spraying water in the direction toward the circumferential surface means that a straight line perpendicular to the first injection port 872 from the center of the first injection port 872 formed at the end of the first nozzle 871 is It may mean an extension direction. The direction toward the bottom surface 33 of the drum, which is the direction of the water sprayed from the second nozzle 873, may also be understood as the same meaning.

7(a), 7(b) and 7(c) show the upper part of the drum 30, the rotating part 100, and the tub 20, and spraying, except for other components of the laundry treatment apparatus 1 Only the device 80 is shown, and the spray pattern of water sprayed from the spray device 80 is shown.

A spray pattern of water sprayed from the first nozzle 871 formed on the left side of the spray device 80 will be viewed with reference to FIGS. 6 and 7 ( a ). The center line of the spray pattern is shown to face the inner peripheral surface of the drum (30). The center line may refer to a direction toward the inner circumferential surface of the aforementioned drum. As can be seen in Figure 7 (a), the water sprayed in the direction toward the inner circumferential surface of the drum does not reach only the inner circumferential surface of the drum 30, but the bottom surface 33 of the drum or the rotating part 100 can reach the bottom 110 of the However, according to the definition of the spraying direction described above, it may be understood that the first nozzle sprays the water supplied through the nozzle supply pipe 81 toward the inner circumferential surface of the drum 30 .

Referring to FIG. 7( c ), the spray pattern of the water sprayed from the first nozzle 871 and the second nozzle 873 avoids the pillar part 150 and the blade 170 into the drum. You can see the spraying.

In other words, the first nozzle 871 and the second nozzle 873 spray water into the drum 30 , but spray water into a space other than the pillar part 150 and the blade 170 . can do. Since the space inside the drum 30 is defined by the bottom surface 33 of the drum and the inner peripheral surface of the drum 30, the space except for the pillar part 150 and the blade 170 can be specified. will be.

Referring again to FIGS. 6 and 7 ( a ), it can be seen that the water sprayed through the second nozzle 873 formed on the right is sprayed toward the bottom surface 33 of the drum. A direction in which an imaginary line perpendicular to the center of the second injection hole 874 formed at the end of the second nozzle 873 extends may be understood as a direction toward the bottom surface 33 of the drum. As can be seen in FIGS. 6 and 7 ( a ), the second nozzle 873 sprays water in the direction of the bottom surface 33 of the drum, and the sprayed water pattern is the inner circumferential surface of the drum 30 . It may not be sprayed directly on the However, the present invention is not limited thereto, and “spraying water in the direction toward the bottom surface 33 of the drum” is a process in which water is initially sprayed from the second nozzle 873 toward the bottom surface 33 of the drum. After that, it can be understood as a concept including the injection of water to the inner circumferential surface of the drum 30 during the water flow process.

As described above, the direction in which the first nozzle 871 and the second nozzle 873 constituting the nozzle part 87 face the inner peripheral surface of the drum 30 and the bottom surface 33 of the drum When the water is designed to be sprayed in a direction facing, water can be supplied from various directions to the clothes accommodated in the drum 30 in the process of using the clothes treatment apparatus. When water is sprayed in the direction of the inner circumferential surface of the drum 30 , the water may directly reach a relatively high position of the drum 30 . In addition, by spraying water on the inner circumferential surface of the drum 30, water is effectively pumped along the inner wall of the drum 30 to the bottom surface 33 of the drum even when clothes are filled in the drum 30 by a certain height or more. can supply

Since the second nozzle 873 sprays water in two directions toward the bottom surface 33 of the drum, when clothes are stored in the drum 30 over a certain level, the bottom surface 33 of the drum ), the sprayed water does not effectively reach the clothes stored adjacent to it. Therefore, when a large amount of clothes are stored as described above, it may be effective for washing and rinsing to spray water in a direction toward the inner circumferential surface of the drum 30 .

On the other hand, when a small amount of clothing is stored inside the drum 30 , when water is sprayed onto the inner circumferential surface of the drum 30 , water may not be directly sprayed onto the stored clothing. Since water sprayed onto the inner circumferential surface of the drum 30 primarily reaches the inner wall of the drum 30 and loses momentum, the rinsing effect may be reduced compared to that directly sprayed onto clothes. In such a case, the second nozzle 873 that directly sprays water in the direction toward the bottom surface 33 of the drum can perform the washing and rinsing process more effectively.

That is, as the first nozzle 871 sprays water in the direction of the inner circumferential surface of the drum and the second nozzle 873 sprays water in the direction of the bottom surface 33 of the drum, a small amount inside the drum 30 The washing and rinsing process may be appropriately performed even when a large amount of clothes are stored as well as when the clothes of the user are stored.

Meanwhile, the area of the first injection hole 872 formed at the end of the first nozzle 871 may be larger than the area of the second injection hole 874 formed at the end of the second nozzle 873 . The water branched from the nozzle branching part 85 and flowing may flow more toward the larger flow path among the first nozzle 871 and the second nozzle 873 . Accordingly, it may be designed to spray more water from the first nozzle 871 . Lengths of the first nozzle 871 and the second nozzle 873 may be similar in view of the structural characteristics of the injector 80 . Therefore, it is possible to adjust the amount of water sprayed by using the difference in the area of the first jetting hole 872 or the second jetting hole 874 . In order to increase the flow rate of the first nozzle 871 , the area of the first injection hole 872 may be increased.

However, the present invention is not limited thereto, and when designing to spray more water from the second nozzle 873 , the area of the second injection hole 874 can be made larger than the area of the first injection hole 872 . There will be.

On the other hand, the first angle (a1), which is the angle formed by the first injection direction (D1), which is the direction in which the water is discharged from the center of the first injection port, and the reference direction, which is the direction in which the water freely falls, is the It may be formed to be larger than the second angle (a2), which is an angle between the second injection direction (D2), which is the direction in which the water is discharged from the center, and the reference direction. The reference direction (G) may be understood as a direction of gravity.

As described above, the first injection direction D1 and the second injection direction D2 may be defined as directions of water passing through the first injection hole 872 and the second injection hole 874 . Water can be sprayed over a larger area as the angle formed with the reference direction, which means the direction of gravity, is larger. That is, the first angle a1 is designed to be larger than the second angle a2 , so that the first nozzle 871 can spray water in a larger area than the second nozzle 873 . However, the present invention is not limited thereto, and the second angle a2 may be larger than the first angle a1 if necessary. In other words, rather than a plurality of nozzles spraying water equally, a specific nozzle may be designed to spray water over a wider area than other nozzles. In this way, the spraying device 80 can improve washing and rinsing performance by spraying water in various patterns.

Referring to Figure 7 (c), the spray pattern of the water sprayed from the spray device is shown from the upper side. The angle formed by the pattern of water sprayed from the first nozzle 871 located on the left is the first injection angle a3, and the angle formed by the pattern of water sprayed from the second nozzle 873 located on the right is the second It can be defined as the injection angle (a4).

According to the first injection angle (a3) and the second injection angle (a4), the sprayed water is sprayed avoiding the pillar part 150 and the blade 170, or the pillar part 150 and the It may be sprayed to reach the blade 170 .

The first injection angle a3 and the second injection angle a4 may be appropriately selected in the design process. As the first spray angle (a3) and the second spray angle (a4) are larger, water can be sprayed over a larger area to increase the effect of washing and rinsing, but the first spray angle (a3) and the second spray angle (a4) When the second injection angle a4 is excessively large, it is unavoidable that water is injected into the pillar part 150 and the blade 170 because it is injected within a limited space.

Accordingly, the first injection angle a3 and the second injection angle a4 may be appropriately adjusted according to the positions of the first nozzle 871 and the second nozzle 873 .

In addition, the first injection amount, which is the amount of water sprayed from the first nozzle for the reference time, may be greater than the second injection amount, which is the amount of water sprayed from the second injection hole for the reference time. The first injection amount may mean a volume of water injected per second, and as a unit of use, m3/s, cm3/s, mm3/s, or the like may be used. As described above, the washing and rinsing effects can be improved by setting the spraying amount from each nozzle differently and spraying water into the drum 30 in various patterns.

8 is a view illustrating a rinsing method of a method of spraying water among rinsing methods of a conventional laundry treatment apparatus.

Specifically, FIG. 8(a) is a diagram illustrating water supply into the tub 20, and FIG. 8(b) is a diagram illustrating a rinsing cycle performed while spraying water.

Briefly describing the conventional rinsing method, it can be largely divided into a method in which water is stored and rinsed (deep rinse) and a method in which rinsing is performed while spraying water (jet spray).

When describing the deep rinse type rinsing method, water is put into the tub 20 to the extent that the clothes are submerged, and then the rinse cycle is performed.

In the case of the deep rinse method, if there is no significant restriction on the amount of water used, there is no major problem in water supply. However, since water must be supplied to have a certain water level in the tub 20, the amount of water required increases as the size of the tub 20 increases. There is a problem with growing. In addition, as the amount of supplied water increases, it takes a long time for water supply and drainage.

In addition to this, since agitation must be performed after water supply, damage to the fabric may be greater. However, nevertheless, there is an advantage in that the rinsing performance is excellent.

On the other hand, in the case of the jet spray method that sprays water, rinsing is performed while water is sprayed from the detergent inlet and a separate nozzle while dehydration is in progress.

In the case of the jet spray method, unlike the deep rinse method, it has the advantage of less water usage and faster time, but has a disadvantage in that the rinsing performance is inferior compared to the deep rinse method.

Specifically, in the case of the conventional jet spray method, the fabric softener is supplied together with water, and water is sprayed together with the dehydration process.

The rinsing method of the jet spray method is performed in such a way that the water flow passes through the fabric during the dehydration process to cause rinsing. When the drum 30 is rotated at a rotation speed of about 120 RPM or more to generate centrifugal force of a certain level or more, water is sprayed.

In the case of this jet spray method, in order to prevent the phenomenon that drainage does not occur while the RPM is lowered, the drainage part is opened in an open state.

Keeping the drain part open is a necessary part to perform dehydration and rinsing, but it is difficult to expect a rinsing effect.

9 is a diagram illustrating a control method of the laundry treatment apparatus according to an embodiment of the present disclosure, FIG. 10 is an operation diagram of the laundry treatment apparatus according to the control method of FIG. 9 , and FIG. 11 is an embodiment of the present disclosure It is a view showing the washing process of the laundry treatment apparatus according to the

Fig. 10 (a) is a view showing a fabric softener input step, Fig. 10 (b) is a view showing a water spraying step, and Fig. 10 (c) is a view showing a rinsing rotation step.

Hereinafter, a rinsing process and a series of washing processes of the laundry treatment apparatus will be described with reference to FIGS. 9 to 11 .

The control method of the laundry treatment apparatus according to an embodiment of the present disclosure may include a fabric softener input step (S1), a water spray step (S2), and a rinsing rotation step (S3).

The fabric softener input step (S1) may be performed after the washing cycle is finished. Specifically, at the end of the washing cycle, the UB reduction algorithm for reducing the unbalance operates, and after the drainage proceeds, the spin-drying cycle operates after washing. After washing, the dehydration cycle operates at a high pm to dehydrate the residual detergent and moisture remaining on the fabric, and then stops at 0 rpm, and then the rinsing cycle according to an embodiment of the present invention is started.

The fabric softener input step S1 is a step in which the fabric softener is introduced into the drum 30 through water provided from the water supply unit 60 .

As described above, the detergent supply device may contain a detergent for washing, a fabric softener for softening the fabric, and the like. In addition, the detergent supply device may be provided so that the fabric softener is introduced into the drum 30 through the water provided from the water supply unit 60 .

The fabric softener input step (S1) may be ended when the fabric softener input is completed.

Even in the fabric softener input step (S1), the drum 30 and the rotating unit 100 may be rotated to agitate the clothes. Even in the fabric softener input step (S1), when the drum 30 and the rotating unit 100 are rotated, the fabric is stirred while preventing the fabric softener from being deposited on only a portion.

When the fabric softener input step (S1) is finished, the water spray step (S2) may be performed. The water spraying step ( S2 ) may be a step in which water is sprayed from the spraying device 80 to the drum.

Specifically, the water spraying step (S2) is a step in which water is sprayed into the tub 20 or the drum 30 through the spraying device 80 with the drain 65 closed.

That is, the injector 80 may inject water into at least one of the space between the tub 20 and the drum 30 and the inner space of the drum 30 . In the water spraying step (S2), the drum 30 and the rotating unit 100 may be rotated.

In the water spraying step (S2), the drum 30 and the rotating part 100 are rotated so that the cloth can be fully wetted with water. At this time, the drum 30 and the rotating unit 100 may be rotated in the same direction.

In the water spraying step (S2), the drain 65 may maintain a closed state. This is to prevent the water input through the injector 80 from being discharged to the outside of the cabinet 10 .

The rinsing rotation step S3 may be a step in which water is continuously sprayed from the spraying device 80 and the drum 30 and the rotating unit 100 are rotated in the same direction.

The rotation unit 100 may be controlled such that the first rotation forming the rising water flow and the second rotation forming the falling water flow are alternately performed.

That is, in the rinsing rotation step ( S3 ), the drum 30 and the rotating unit 100 are rotated in the same direction to disperse the cloth so that the cloth can be rinsed evenly.

The drum 30 and the rotating unit 100 may be controlled so that the RPM is varied in the rinsing rotation step (S3). Specifically, the drum 30 and the rotating unit 100 may be controlled by being varied from 60 to 120 RPM depending on the load.

More specifically, the RPM of the drum 30 and the rotating unit 100 may be repeatedly increased and decreased. When the RPM rises and falls are repeatedly performed, the water sinking phenomenon in the drum 30 (the phenomenon in which the RPM is lowered without draining) can be prevented.

That is, if the drum 30 and the rotating part 100 are stirred when water is sprayed from the spraying device 80 in a state in which the drain 65 is closed, an effect similar to the deep rinse method is exhibited, and the rinsing performance is improved. can be

Unlike the deep rinse method, in the case of the jet spray method, rinsing is performed by centrifugal force, but the rinsing performance is reduced in the case of fabrics located below or heavy fabrics. On the other hand, according to the control method of the laundry treatment apparatus according to the embodiment of the present invention, the rinsing performance may be improved as the drain unit 65 is closed despite the water supply using the spraying device 80 .

In the rinsing rotation step S3 , the drum 30 and the rotating unit 100 may be rotated in the same direction, and the rotating unit 100 may be controlled in such a way that the first rotation is performed first and the second rotation is performed.

The RPM of the drum 30 and the rotating unit 100 in the rinsing rotation step S3 may be lower than the RPM of the drum 30 and the rotating unit 100 in the dehydration step. In the rinsing rotation step (S3), it is not a step of removing moisture from the cloth, but a step of removing foreign substances remaining in the cloth and softening the cloth, so it does not need to be rotated at a high RPM as in the dehydration cycle.

The rinsing rotation step (S3) may be performed for a longer time than the time required for the fabric softener input step (S1) and the water spray step (S2). This is because the water level in the drum 30 may continuously rise as the rinsing rotation step S3 is performed.

After the rinsing rotation step S3 is finished, drainage may proceed. After the drainage proceeds, a dehydration step may be performed. Specifically, after the washing cycle is finished, a cycle for reducing unbalance may be performed, and after the washing water is drained, the washing/dehydration cycle may be performed. When the washing/dehydration cycle is finished, the rinsing cycle according to the present disclosure may be performed.

By performing the rinsing rotation step (S3), unnecessary waste water can be saved and the effect of the fabric softener can be maximized. Therefore, less water is used compared to the deep rinse method, and higher rinsing performance and effects can be obtained than the jet spray method.

Although representative embodiments of the present invention have been described in detail above, those of ordinary skill in the art to which the present invention pertains will understand that various modifications are possible within the limits without departing from the scope of the present invention with respect to the above-described embodiments. . Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims described below as well as the claims and equivalents.

1: clothes processing device 10: cabinet
12: clothing opening 13: clothing door
20: tub 22: tub opening
30: drum 31: open side
33: bottom surface 39: balancer
41: first rotational shaft 42: second rotational shaft
45: gear set 46: first clutch element
47: second clutch element 50: driving unit
60: water supply part 65: drainage part
70: control unit 100: rotation unit
110: bottom 130: protrusion
132: main protrusion 135: first sub protrusion
137: second sub-projection 150: pillar portion
156: cap coupling part 165: cap part
170: blade

Claims (10)

A cabinet, a tub including a space for storing water, a drum rotatably provided inside the tub, the drum including an open surface through which clothes enter and exit and a floor surface located on the opposite side of the open surface, the drum being located on the floor surface A bottom portion, a pillar portion protruding from the bottom portion toward the open surface, and provided along the circumferential direction of the pillar portion are arranged to be spaced apart from each other, from the bottom side to the open surface side along a direction inclined with respect to the longitudinal direction of the pillar portion A rotating unit including an extending blade and rotatably installed on the bottom surface inside the drum, a water supply unit supplying water into the tub, a spraying device receiving water from the water supply unit and spraying it into the drum; In the control method of the laundry treatment apparatus, comprising: a drainage unit for discharging water from the tub to the outside of the cabinet;
a fabric softener input step in which the fabric softener is introduced into the drum through water provided from the water supply unit;
a water spraying step of spraying water into the drum through the spraying device in a state in which the drain is closed after the fabric softener input step is completed; and
and a rinsing rotation step in which water is continuously sprayed from the spraying device in a state in which the drain part is closed, and the drum and the rotating part are rotated in the same direction. According to claim 1,
In the rinsing rotation step, the control method of the laundry treatment apparatus is controlled so that the RPM of the drum and the rotating part are variable. 3. The method of claim 2,
In the rinsing rotation step, the drum and the rotating unit are controlled such that a first rotation for forming an ascending water flow is performed and a second rotation for forming a descending water flow is performed after the first rotation,
In the rinsing rotation step, the first rotation and the second rotation of the drum and the rotating unit are alternately performed. 3. The method of claim 2,
In the rinsing rotation step, the RPM of the drum and the rotating unit is repeatedly increased and decreased. According to claim 1,
A method of controlling a laundry treatment apparatus in which the draining step and the dehydrating step are performed after the rinsing rotation step is performed. cabinet;
a tub including a space in which water is stored;
a drum provided rotatably inside the tub, the drum including an open surface through which clothes enter and exit and a bottom surface located on the opposite side of the open surface;
A bottom portion positioned on the bottom surface, a pillar portion protruding from the bottom portion toward the open surface, and the pillar portion provided along the circumferential direction are spaced apart from each other, and the bottom portion along a direction inclined with respect to the longitudinal direction of the pillar portion a rotating part including a blade extending from the negative side to the open surface side and rotatably installed on the bottom surface inside the drum;
a water supply unit for supplying water into the tub;
a spraying device receiving water from the water supply and spraying it into the drum;
a drain unit for discharging the water in the tub to the outside of the cabinet; and
A control unit for controlling the rotation of the drum and the rotating unit and the operation of the water supply unit and the drain unit;
During rinsing, water is continuously sprayed from the spraying device in a state in which the drain part is closed, and the drum and the rotating part are rotated in the same direction. 7. The method of claim 6,
A laundry treatment apparatus in which RPMs of the drum and the rotating unit are variable when water is continuously sprayed from the spraying device in a state in which the draining part is closed. 8. The method of claim 7,
The control unit controls the drum and the rotating unit so that a first rotation to form an ascending water flow is performed and a second rotation to form a descending water flow after the first rotation is performed,
The drum and the rotating unit are configured to alternately perform the first rotation and the second rotation. 8. The method of claim 7,
A laundry treatment apparatus in which RPM of the drum and the rotating unit is repeatedly increased and decreased. 7. The method of claim 6,
The control unit controls the drainage unit to drain the water in the tub to the outside of the cabinet after rinsing is completed,
The control unit controls the drum or the rotating unit to perform spin-drying after drainage is complete.

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