KR102442970B1 - A Laundry Treatment Machine - Google Patents

Abstract

The present invention relates to a laundry treatment device.
A laundry treatment apparatus according to the present invention includes a tub; a drum provided with a drum body positioned inside the tub and having a hole formed therein, and a drum base coupled to a lower portion of the drum body; a filter assembly disposed on the inner surface of the drum body and filtering wash water flowing inside the drum; a pulsator rotatably disposed above the drum base; And a first flow path coupled to the outside of the drum base, coupled with the drum base, for guiding the washing water flowing on the upper side of the drum base to the filter assembly when the pulsator rotates in one direction, and the other of the pulsator and a base bracket forming a second flow path for guiding wash water flowing above the drum base to the filter assembly when rotating in the direction.

Description

Laundry Treatment Machine {A Laundry Treatment Machine}

The present invention relates to a laundry treatment apparatus, and more particularly, to a laundry treatment apparatus for filtering wash water with a filter assembly.

In general, the laundry treatment apparatus performs washing using the frictional force between the washing tub and the laundry rotating by receiving the driving force of a motor in a state in which detergent, washing water, and laundry are put into the washing tub, so that there is little damage to the laundry and the laundry is not tangled with each other It can produce an undesirable washing effect.

Some of the conventional laundry treatment machines include a circulation passage provided in the drum to move water to the upper portion of the drum when the agitator rotates, and a filter device provided in the circulation passage to filter water.

The filter device provided in the conventional laundry treatment equipment is provided in the form of a mesh, so there is a problem that the mesh is damaged by collision with the clothes during washing. there was a problem with

In addition, since the net filter only filters foreign substances contained in the wash water, and cannot spray the wash water into the laundry, it is difficult to implement a function of increasing washing efficiency.

In order to solve this problem, Korean Patent Application Laid-Open No. 10-2017-0011116 discloses a device for attaching a filter device to the inner circumferential surface of the drum to filter the water flowing inside the drum when the drum rotates.

However, the laundry treatment device using such a filter device has a structure that can effectively filter the wash water flowing inside the drum only when the flow rate of the wash water supplied to the filter device (or “filter assembly”) is high.

An object of the present invention is to provide a laundry treatment device that increases the flow rate of wash water supplied to a filter assembly.

Another object of the present invention is to provide a laundry treatment device that effectively filters the wash water circulating inside the tub.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the laundry treatment apparatus according to the present invention is a tub; a drum provided with a drum body positioned inside the tub and having a hole formed therein, and a drum base coupled to a lower portion of the drum body; a filter assembly disposed on the inner surface of the drum body and filtering wash water flowing inside the drum; a pulsator rotatably disposed above the drum base; And a first flow path coupled to the outside of the drum base, coupled with the drum base, for guiding the washing water flowing on the upper side of the drum base to the filter assembly when the pulsator rotates in one direction, and the other of the pulsator Two flow paths for supplying wash water to the filter assembly in consideration of the rotation direction of the pulsator, including a base bracket that forms a second flow path for guiding the washing water flowing above the drum base to the filter assembly when the drum base is rotated have

The base bracket of the laundry treatment apparatus according to the present invention forms a filter connection flow path for guiding the washing water flowing through the first flow path or the second flow path to the filter assembly by being coupled to the drum base, thereby forming a first flow path. Alternatively, the wash water supplied to the second flow passage is supplied with the filter assembly through the filter connection passage.

The first flow path and the second flow path of the laundry treatment apparatus according to the present invention are formed in a direction inclined to an imaginary normal line formed on the outer periphery of the drum base, and the first flow path and the second flow path are each As the distance from the center of the drum base increases, the flow passages are formed so as to be adjacent to each other, and the flow passages are formed closer to the tangential direction of the outer circumference of the drum base.

The first flow path of the laundry treatment device according to the present invention is formed in a direction in which the water flow formed by the rotation of the pulsator in one direction flows, and the second flow path is the direction in which the water flow formed by the rotation of the pulsator in the other direction flows is formed to form a flow path close to the tangential direction of the outer circumference of the drum base.

The drum base of the laundry treatment apparatus according to the present invention has a first inlet hole opened to communicate the inside of the drum with the first flow path, and a second inlet hole opened to communicate the inside of the drum with the second flow path. The first inflow hole is opened in the direction in which the first flow passage is formed, and the second inlet hole is opened in the direction in which the second flow passage is formed, and is formed close to the tangential direction of the outer circumference of the drum base. It can lead to washing water.

The drum base of the laundry treatment device according to the present invention forms a discharge hole opened so that the wash water introduced into the first inlet hole or the second inlet hole flows to the filter assembly disposed above the drum base, Wash water flowing into the inlet hole or the second inlet hole may be supplied to the filter assembly.

The drum base of the laundry treatment apparatus according to the present invention includes: a base plate forming a bottom surface; an upward perimeter bent upward from the outer periphery of the base plate; and a curved periphery extending from the upward periphery in a direction away from the center of the drum base and connected to the drum body, wherein the upward perimeter is a first opened to communicate the inside of the drum with the first flow path. An inlet hole and a second inlet hole opened to communicate the inside of the drum and the second flow path are formed, and the curved circumference portion is disposed on the upper side of the drum base for the wash water introduced into the first inlet hole or the second inlet hole. A discharge hole opened to flow to the filter assembly may be formed to supply wash water to the filter assembly through the first flow path or the second flow path according to the flow direction of the wash water flowing through the upper side of the drum base.

The base bracket of the laundry treatment apparatus according to the present invention includes: a main guide plate for guiding the washing water flowing into the first inlet hole or the second inlet hole to the filter assembly; a side guide plate bent toward the drum base at both ends of the main guide plate to guide wash water to the filter assembly; and a central guide plate protruding from one side of the lower guide plate to partition the first flow path and the second flow path into the first flow path or the second flow path according to the flow direction of the wash water flowing through the upper side of the drum base. Wash water can be supplied to the filter assembly.

The details of other embodiments are included in the detailed description and drawings.

According to the laundry treatment apparatus of the present invention, there are one or more of the following effects.

First, two flow paths supplied to the filter assembly are formed in a range close to the tangent line of the drum base to minimize the vortex region generated in the wash water supplied to the filter assembly, so that a larger amount of wash water is supplied to the filter assembly. have.

Second, since a larger amount of wash water is supplied to the filter assembly, there is an advantage that a larger amount of wash water flowing inside the tub can be filtered.

Third, since a large amount of wash water is supplied to the filter assembly and a large amount of wash water is filtered, there is also an advantage in that dust contained in the wash water flowing inside the tub can be effectively removed.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a laundry treatment device according to an embodiment of the present invention.
2 is a view for explaining the internal structure of the laundry treatment apparatus according to an embodiment of the present invention.
3 is a view showing a drum mounted with a base bracket according to an embodiment of the present invention.
4 is a view for explaining the configuration and arrangement of a filter assembly according to an embodiment of the present invention.
5 is a combined perspective view of a drum base and a base bracket according to an embodiment of the present invention.
FIG. 6 is a bottom view of FIG. 5 .
7 is a front view of FIG. 5 .
8 is a perspective view of a drum base according to an embodiment of the present invention.
9 is a side view of FIG. 8 ;
FIG. 10 is a bottom view of FIG. 8 .
11 is a perspective view of a base bracket according to an embodiment of the present invention.
12 is a cross-sectional view taken along line X-X' of FIG. 3, and is a view for explaining a flow path formed by the drum base and the base bracket according to the present embodiment.
Figure 13a is a view showing the direction of the water flow formed according to the one-way rotation of the flow path and the pulsator formed by the drum base and the base bracket in contrast to the present invention.
13B is a view illustrating a direction of a water flow formed in a direction opposite to that of FIG. 13A.
14A is a view illustrating a flow path formed by a drum base and a base bracket according to an embodiment of the present invention and a direction of a water flow formed according to one-way rotation of the pulsator.
14B is a view showing a direction of a water flow formed in a direction opposite to that of FIG. 14A.
15A is a view showing the flow and flow rate of wash water when the water flow is formed in FIG. 13A.
15B is a view showing the flow and flow rate of wash water when the water flow is formed in FIG. 14A.
16 is data comparing the flow rate of wash water flowing to the filter assembly as a result according to FIGS. 15A and 15B.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only this embodiment allows the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a laundry treatment apparatus 10 according to embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view of a laundry treatment device according to an embodiment of the present invention. 2 is a view for explaining the internal structure of the laundry treatment apparatus according to an embodiment of the present invention.

Hereinafter, the overall configuration of the laundry treatment apparatus according to the present embodiment will be described with reference to FIGS. 1 to 2 .

1 to 2 , the laundry treatment apparatus 10 according to an embodiment of the present invention includes a top load type laundry treatment apparatus 10 in which the cloth is inserted into the drum 26 in the upper direction. to be. Such a top-loaded laundry treatment device 10 is a concept including a laundry treatment device 10 in which a cloth is inserted to perform washing, rinsing and dehydration, or a dryer in which a wet cloth is inserted to perform drying. Hereinafter, the laundry The processing device 10 will be mainly described.

The laundry treatment device 10 according to the present embodiment includes a case 12 forming an exterior, and a door 14 rotatably provided in the case 12 to open and close an entrance hole through which laundry enters and exits.

The case 12 includes a cabinet 16 having an open upper surface and an open lower surface, forming a side surface of the laundry treatment device 10 , and a top cover 18 installed to cover the open upper surface of the cabinet 16 , , and a base 20 installed on the open lower surface of the cabinet 16 .

The door 14 opens and closes the fore entrance/exit hole of the top cover 18 . At least a part of the door 14 may be made of glass so that the inside can be seen.

The laundry treatment device 10 includes a control panel that provides a user interface with operation keys for receiving various control commands from a user, and a display for displaying information on the operating state of the laundry treatment device 10 . The control panel 22 may be mounted on one side of the top cover 18 .

The laundry treatment device 10 includes a tub 24 containing washing water (including water used for a washing cycle or a rinsing cycle), and a drum 26 rotatably provided in the tub 24 to accommodate laundry. can be provided. A balancer 66 for compensating for eccentricity generated when the drum 26 rotates may be provided on one side of the drum 26 .

The drum 26 according to the present embodiment is an inner tub or washing tub in which the fabric is contained, the upper surface of which is opened for entry and exit of the fabric, and is rotatably positioned inside the tub 24 .

In the drum 26 , a plurality of hand holes 40 are formed through which washing water or rinsing water enters and exits the drum 26 , and the water dehydrated from the cloth is discharged to the outside of the drum 26 .

The drum 26 is formed in a hollow cylindrical shape and includes a drum body 28 that forms the peripheral exterior of the drum 26, and a drum coupled to the lower portion of the drum body 28 and forming the lower exterior of the drum 26. and a base 30 .

In the drum base 30, a pulsator shaft 62 for rotating the pulsator 52 passes through the center, and a central hole 34 for washing water, rinsing water, and water dehydrated from the cloth to pass is formed.

The drum 26 according to the present embodiment may have a dual structure of the drum body 28 and the drum base 30 . In the drum 26 according to this embodiment, the drum body 28 and the drum base 30 are made of a high-strength metal material such as stainless steel, and the drum body 28 made of stainless steel and the drum base 30 made of stainless material. It may consist of a combination.

In the drum base 30 according to the present embodiment, a first inlet hole 44 , a second inlet hole 45 , and a discharge hole 46 for flowing wash water to a filter assembly to be described below are formed.

The laundry treatment device 10 according to the present embodiment includes a pulsator 52 (pulsator) that forms a rotational water flow of the wash water accommodated in the tub 24 . The pulsator 52 is disposed on the bottom surface of the drum 26 . The pulsator 52 is rotated inside the drum 26 to flow wash water and cloth.

The pulsator 52 is disposed spaced apart from the bottom surface of the drum base 30 at regular intervals. The pulsator 52 may include a plurality of lower ribs 54 that protrude downward from the lower side and extend radially from the central portion. The pulsator 52 flows the wash water on the upper side of the drum base 30 to the first inlet hole 44 or the second inlet hole 45 . The lower rib 54 forms a water flow in the radial direction when the pulsator 52 rotates, and the wash water flowing from the upper side of the drum base 30 is fed into the first inlet hole 44 formed in the drum base 30 or It flows through the second inlet hole (45). The pulsator 52 is disposed above the first inlet hole 44 and the second inlet hole 45 formed on one side of the drum base 30 .

The laundry treatment device 10 according to the present embodiment includes a driving device for rotating the pulsator 52 or rotating the pulsator 52 and the drum 26 together. The driving device according to this embodiment includes a motor 60 as a driving source, a pulsator shaft 62 as a washing shaft connected to the pulsator 52, a dewatering shaft 64 for rotating the drum 26, and a motor ( 60) includes a clutch for transmitting the driving force of the pulsator shaft 62 or the driving force of the motor 60 to the pulsator shaft 62 and the dehydration shaft 64 together.

The laundry treatment apparatus 10 according to the present embodiment may further include a hub 56 that transmits the rotational force of the motor 54 to the drum 26 .

The hub 56 has a spin-drying shaft 64 that is rotated by a motor 60 connected to the center, and parts other than the center are fastened to the drum base 30 with a plurality of fastening members, and transmitted through the spin-drying shaft 64 . The rotational force is transmitted to the drum base 30 through a plurality of parts other than the center. The hub 56 can rotate the drum 26 stably even though the size of the drum 26 is large due to the structure as described above.

When the hub 56 is connected to a plurality of parts other than the center of the drum base 30 , even if the size of the drum 26 is large, the drum 26 has little distortion or unbalance and can be rotated stably.

The laundry treatment machine may include a plurality of suspensions (not shown) for suspending the tub 24 from the inner upper portion of the cabinet 16 . One end of the suspension may be coupled to an inner upper portion of the cabinet 16 , and the other end may be coupled to a lower portion of the tub 24 . The suspension may be coupled to the top cover 18 which is one of the components constituting the case 12 . However, the present invention is not limited thereto, and may be coupled to any fixed portion of the case 12 .

The laundry treatment device 10 according to the present embodiment includes a water supply assembly 68 for supplying wash water into the tub 24 and a drain assembly for draining the wash water from the tub 24 after washing or dehydration is completed. (74) is arranged.

The water supply assembly 68 includes an external hose for guiding wash water supplied from an external faucet to the laundry treatment device 10, and a water supply valve 70 connected to the external hose to control the supply of wash water; and a water supply hose 72 connecting the water supply valve 70 and the detergent supply unit. The water supply valve 70 and the water supply hose 72 form a water supply passage for supplying wash water.

The drain assembly 74 is formed on the lower surface of the tub 24 and includes a drain hose 76 forming a drain passage, and a drain pump 78 for pumping wash water flowing through the drain passage to the outside of the laundry treatment device 10 . ) is included. The drain assembly 74 may be disposed between the tub 24 and the base 20 .

3 is a view showing a drum mounted with a base bracket according to an embodiment of the present invention. 4 is a view for explaining the configuration and arrangement of a filter assembly according to an embodiment of the present invention. 5 is a combined perspective view of a drum base and a base bracket according to an embodiment of the present invention. FIG. 6 is a bottom view of FIG. 5 . FIG. 7 is a front view of FIG. 5 . 8 is a perspective view of a drum base according to an embodiment of the present invention. 9 is a side view of FIG. 8 ; FIG. 10 is a bottom view of FIG. 8 . 11 is a perspective view of a base bracket according to an embodiment of the present invention. 12 is a cross-sectional view taken along line X-X' of FIG. 3 and is a view for explaining a flow path formed by the drum base and the base bracket according to the present embodiment.

First, a filter assembly according to the present embodiment will be described with reference to FIG. 4 . The laundry treatment device 10 according to this embodiment includes a filter assembly 80 that filters the washing water flowing inside the drum 26 . The filter assembly 80 according to the present embodiment is disposed on the inner surface of the drum body 28 . The filter assembly 80 according to the present embodiment is vertically disposed along the drum body 28 from the upper side of the drum base 30 .

The laundry treatment device 10 according to this embodiment flows the wash water flowing through the upper side of the drum base 30 to the filter assembly 80 due to the rotation of the pulsator 52 . The filter assembly 80 filters the wash water introduced by the rotation of the pulsator 52 .

The filter assembly 80 is connected to the discharge hole 46 of the drum base 30 . The filter assembly 80 is connected to a first flow passage 48 or a second flow passage 49 to be described below. The filter assembly 80 filters the wash water introduced through the first flow path 48 or the second flow path 49 .

The laundry treatment apparatus 10 according to the present embodiment includes at least one filter assembly. The laundry treatment apparatus 10 according to the present embodiment may include two filter assemblies disposed to face each other at positions opposite to the inner circumferential surface of the drum body 28 .

The filter assembly 80 forms the outer shape of the filter assembly, a filter frame 82 vertically disposed inside the drum 26, a filter inside the drum 26, and supplying filtered wash water to the inside of the drum 26 It includes a filter body 84 and a non-return valve 86 disposed inside the filter body 84 to induce a one-way flow of wash water inside the filter body 84 . The filter body 84 according to the present embodiment may be detachably disposed on the filter frame 82 . The filter body 84 is formed with a plurality of holes that are opened toward the inside of the drum 26 .

Hereinafter, a drum base and a base bracket according to the present embodiment will be described with reference to FIGS. 3 to 11 .

The laundry treatment device 10 according to this embodiment includes a drum base 30 coupled to the lower part of the drum body 28, a pulsator 52 rotatably disposed on the upper side of the drum base 30, and the drum base ( 30) coupled to the outside of the pulsator 52, a first flow path 48 for guiding the washing water flowing above the drum base 30 to the filter assembly 80 when the pulsator 52 is rotated in one direction, and the pulsator ( 52) includes a base bracket 100 that forms a second flow path 49 for guiding wash water flowing above the drum base 30 to the filter assembly 80 when the drum base 30 rotates in the other direction opposite to the one direction. do.

The base bracket 100 according to the present embodiment is coupled to the drum base 30, and a filter connection passage for guiding the washing water flowing into the first passage 48 or the second passage 49 to the filter assembly 80 . (50) is formed. The filter connection passage 50 is connected to the discharge hole 46 of the drum base 30 . The first flow passage 48 and the second flow passage 49 are combined into one flow passage in the filter connection passage 50 .

Referring to FIG. 12 , the first flow passage 48 and the second flow passage 49 according to the present embodiment are formed in a direction inclined to an imaginary normal line A formed on the outer periphery of the drum base 30 . The first flow passage 48 and the second flow passage 49 form flow passages in a direction adjacent to each other as the distance from the center of the drum base 30 increases. The first flow path 48 according to the present embodiment is formed at an angle adjacent to the direction in which the water flow formed by the one-way rotation of the pulsator 52 flows (see FIG. 13A ). The second flow path 49 is formed at an angle adjacent to the direction in which the water flow formed by the rotation of the pulsator 52 in the other direction flows (see FIG. 13b ). The first flow passage 48 and the second flow passage 49 are formed in a direction to minimize the flow resistance of the wash water flowing above the drum base 30 due to the rotation of the pulsator 52 .

The first flow path 48 according to the present embodiment is formed close to the imaginary tangent line B formed on the outer circumference of the drum base 30 at a portion where the first flow path 48 and the drum base 30 meet. Specifically, the first flow path 48 is preferably formed in a range of ±10° to the virtual tangent line B formed on the outer periphery of the drum base 30 . Similarly, the second flow path 49 is also formed close to an imaginary tangent line formed on the outer periphery of the drum base 30 at the portion where the second flow path 49 and the drum base 30 meet, and the It can be formed in the range of ±10° to the imaginary tangent line formed on the outer circumference.

The first flow passage 48 and the second flow passage 49 according to the present embodiment have the outer circumference of the drum base 30 at the portion where the first flow passage 48 or the second flow passage 49 and the drum base 30 meet. It is formed at an angle between the imaginary normal (A) and the tangent (B) formed in .

In the direction in which the first flow passage 48 and the second flow passage 49 are directed, wash water flowing through the drum base 30 is easily introduced, and in consideration of maintaining the rigidity of the drum base 30 and the base bracket 100 , the drum It is formed at an angle between the imaginary normal line (A) and the tangent line (B) formed on the outer periphery of the base 30 .

The drum base 30 forms the lower exterior of the drum 26 , and is connected to the driving device and the dewatering shaft 64 to rotate the drum body 28 . Referring to FIG. 7 , the drum base 30 according to the present embodiment has a first inlet hole ( 44) and a second inlet hole 45 are formed. The drum base 30 according to this embodiment has a discharge hole ( 46) is formed.

Referring to FIG. 5 , the drum base 30 has a central hole 34 through which the pulsator shaft 62 penetrates, and wash water passes therethrough. A hub 56 may be disposed in the central hole 34 of the drum base 30 according to the present embodiment. The drum base 30 is fastened to the hub 56 by a plurality of fastening means. The hub 56 has a plurality of openings through which washing water passes, so that water passes through the drum base 30 up and down.

8 to 10 , the drum base 30 according to this embodiment transmits wash water flowing along the drum base 30 base plate 32 when the pulsator 52 rotates in one direction into the first flow path. The first inlet hole 44 for guiding to (48) and the first for guiding wash water flowing along the base plate 32 to the second flow path 49 when the pulsator 52 rotates in the opposite direction to one direction 2 inlet holes 45 are formed.

When the pulsator 52 rotates, the washing water flowing between the drum base 30 and the pulsator 52 by the lower rib 54 of the pulsator 52 forms a rotational water flow along the base plate 32 . do. Wash water forming the rotational water flow along the base plate 32 flows to the first inlet hole 44 or the second inlet hole 45 formed in the upward circumferential portion 36 by centrifugal force. The first inlet hole 44 is opened in the direction in which the washing water flow is formed when the pulsator 52 rotates in one direction. The second inlet hole 45 is opened in the direction in which the washing water flow is formed when the pulsator 52 rotates in the other direction. Wash water flows to the first inlet hole 44 or the second inlet hole 45 according to the rotational direction of the pulsator 52 .

8 to 10, the drum base 30 according to the present embodiment includes a base plate 32 forming a bottom surface, an upward perimeter portion 36 bent upward from the outer periphery of the base plate 32, and It extends in a direction away from the center of the drum base 30 in the upward circumferential portion 36 and includes a curved circumferential portion 40 forming a curved surface.

A central hole 34 is formed in the center of the base plate 32 . The base plate 32 is formed with a plurality of fastening holes for fastening with the hub and fastening means. A plurality of reinforcing grooves 35 for maintaining rigidity are formed in the base plate 32 . An upward peripheral portion 36 is disposed on the outer periphery of the base plate 32 .

The upward perimeter 36 is bent upwardly from the outer periphery of the base plate 32 . The upward periphery 36 has a first inlet hole 44 for communicating the inside of the drum 26 with the first flow passage 48 , and a second inlet hole for communicating the inside of the drum 26 with the second flow passage 49 . (45) is formed. The first inflow hole 44 is opened in the direction in which the first flow path 48 is formed. The second inflow hole 45 is opened in the direction in which the second flow passage 49 is formed. The first inlet hole 44 and the second inlet hole 45 are formed under the base plate 32 and the upward circumferential portion 36 connected thereto. The drum base 30 is disposed between the first inlet hole 44 and the second inlet hole 45 and includes a partition portion 47 that separates the first inlet hole 44 from the second inlet hole 45 . do. The partition part 47 prevents the washing water from flowing between the first flow path 48 and the second flow path 49 .

The upward circumferential part 36 according to the present embodiment may be divided into a first upward peripheral part 37 connected to the base plate 32 and a second upward peripheral part 38 connected to the curved peripheral part 40 . have. The first upward circumferential portion 37 and the second upward circumferential portion 38 are connected in a stepped manner through the connecting bent portion 39 . The outer perimeter of the pulsator 52 is disposed inside the second upward perimeter 38 . A first inflow hole 44 and a second inflow hole 45 are formed in the first upward circumferential portion 37 .

The curved circumferential portion 40 extends from the outside of the upward circumferential portion 36 and is connected to the drum body 28 . The curved perimeter portion 40 is formed to be convex in the lower direction. The curved peripheral portion 40 is formed with a reinforcing bent portion 42 for maintaining the rigidity of the drum base 30 . The curved peripheral portion 40 is formed with a discharge hole 46 for sending the wash water flowing in the first flow passage 48 or the second passage 49 to the filter assembly 80 . The discharge hole 46 is opened upward in which the filter assembly 80 is disposed.

A base bracket 100 for guiding wash water flowing through the drum base 30 to the filter assembly is disposed outside the drum base 30 . The base bracket 100 connects the opened first inlet hole 44 or the second inlet hole 45 and the discharge hole 46 of the drum base 30 . 3 to 7 , the base bracket 100 according to the present embodiment is coupled to the outside of the drum base 30 . The base bracket 100 is coupled to the drum base 30 to form a first flow path 48 and a second flow path 49 for guiding the washing water to the filter assembly 80 .

Referring to FIG. 11 , the base bracket 100 according to the present embodiment is a main guide plate ( 110), a pair of side guide plates 112 bent toward the drum base 30 at both ends of the main guide plate 110 and guiding the washing water to the filter assembly 80, the main guide plate 110 It protrudes from the center and includes a central guide plate 114 that divides the first passage 48 and the second passage 49 .

The side guide plate 112 and the central guide plate 114 transfer a part of the wash water flowing from the upper side of the drum base 30 and the base plate 32 by the pulsator 52 to the first flow path 48 or the second flow path. You will be guided to Euro 49. The main guide plate 110 guides the washing water flowing into the side guide plate 112 and the central guide plate 114 to the filter assembly 80 disposed above the drum base 30 .

The main guide plate 110 fastens the base bracket 100 to the drum base 30 . The main guide plate 110 is fastened to the base plate 32 from one side, and is fastened to the curved circumference portion 40 from the other side. The main guide plate 110 forms a curved surface curved upward to guide the washing water flowing into the first flow path 48 or the second flow path 49 to the filter assembly 80 disposed on the upper side.

The central guide plate 114 forms a pair of side guide plates 112 formed on both sides of the main guide plate 110 , and a first flow path 48 and a second flow path 49 . The central guide plate 114 is formed to protrude upward from the main guide plate 110 . The central guide plate 114 has a '∧' shape so that the first flow path 48 and the second flow path 49 are merged in the downstream. The central guide plate 114 abuts against the partition portion 47 of the drum base 30 . The central guide plate 114 is in contact with the partition portion 47 of the drum base 30 and has a triangular shape. The central guide plate 114 and the partitioning portion prevent the flow path from being formed in the normal direction of the outer periphery of the base plate 32 .

Figure 13a is a view showing the direction of the water flow formed according to the one-way rotation of the flow path and the pulsator formed by the drum base and the base bracket in contrast to the present invention. 13B is a view illustrating a direction of a water flow formed in a direction opposite to that of FIG. 13A. 14A is a view illustrating a flow path formed by a drum base and a base bracket according to an embodiment of the present invention and a direction of a water flow formed according to one-way rotation of the pulsator. 14B is a view showing a direction of a water flow formed in a direction opposite to that of FIG. 14A. 15A is a view showing the flow and flow rate of wash water when the water flow is formed in FIG. 13A. 15B is a view showing the flow and flow rate of wash water when the water flow is formed in FIG. 14A. 16 is data comparing the flow rate of wash water flowing to the filter assembly as a result according to FIGS. 15A and 15B.

Hereinafter, with reference to FIGS. 13A to 16 , a case in which a flow path is formed in a direction normal to the outer periphery of the drum base by the coupling of the drum base and the base bracket, and the first flow path and the second flow path are formed as in this embodiment Compare the flow rate of wash water flowing through the filter assembly of the case.

The laundry treatment apparatus according to FIGS. 13A and 13B is a combination of the drum base 30 ′ and the base bracket 100 ′, so that one flow path 48 ′ is formed in a direction normal to the outer periphery of the drum base 100 ′. to form The flow path 48 ′ formed as shown in FIG. 13A or 13B is formed perpendicular to the rotational water flow generated by the rotation of the pulsator. As shown in Fig. 13a, when the washing water flow is formed by the rotation of the pulsator in one direction and when the washing water flow is formed by the rotation of the pulsator in the other direction as shown in Fig. 13b, the washing water flows through one flow path in the direction normal to the outer periphery of the drum base. move

When a rotational water flow is formed between the drum base and the pulsator due to the rotation of the pulsator in the laundry treatment apparatus having a flow path as shown in FIG. 13A or 13B, as shown in FIG. 15A, the flow path 48' through which the washing water is supplied to the filter assembly It can be seen that the supply of wash water to the filter assembly is reduced due to the vortex occurring in most sections.

On the other hand, as shown in Figure 14a or Figure 14b, the laundry treatment apparatus according to the present embodiment, the drum base 30 and the base bracket 100 are combined, the drum base 30 when the pulsator 52 is rotated in one direction. A first flow path 48 for guiding the washing water flowing through the filter assembly 80 to the filter assembly 80, and a washing that flows above the drum base 30 when the pulsator 52 rotates in the other direction opposite to the one direction. A second flow path 49 for guiding water to the filter assembly 80 is formed.

The first flow passage 48 and the second flow passage 49 according to the present embodiment are formed in a direction inclined to an imaginary normal line formed on the outer periphery of the drum base 30, and the first flow passage 48 and the second flow passage 49 are formed. The flow paths 49 form flow paths in directions adjacent to each other as the distance from the center of the drum base 30 increases.

Accordingly, when the washing water flow occurs in one direction of the pulsator 52 as shown in FIG. 14A as shown in FIG. 14A, the washing water flows into the first flow path, and when the washing water flow occurs in the other direction by the rotation of the pulsator 52 as shown in FIG. 14B, the second flow path wash water flows through

Referring to FIG. 15B , when the washing water flow is formed between the drum base and the pulsator due to one-way rotation of the pulsator, the washing water is introduced into the first flow path. It can be seen that the first flow path is formed adjacent to the direction in which the washing water flow flows, so that a vortex hardly occurs in the first flow path, so that the amount of wash water supplied to the filter assembly is not reduced.

Referring to FIG. 16 , the flow rate of wash water supplied to the filter assembly is determined by using the drum base and the base bracket according to FIG. 13A or 13B in the laundry treatment device (b) using the drum base and the base bracket according to the present embodiment. It can be seen that the washing water flow rate is increased by about 30% compared to the laundry treatment device (a).

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

10: laundry treatment device 24: tub
26: drum 28: drum body
30: drum base 32: base plate
36: upper perimeter 40: curved perimeter
44: first inflow hole 45: second inflow hole
46: discharge hole 48: first flow path
49: second flow path 50: filter connection flow path
52: pulsator 56: hub
80: filter assembly 82: filter frame
84: filter body 100: base bracket
110: main guide plate 112: side guide plate
114: center guide plate

Claims (13)

tub;
a drum provided with a drum body positioned inside the tub and having a hole formed therein, and a drum base coupled to a lower portion of the drum body;
a filter assembly disposed on the inner surface of the drum body and filtering wash water flowing inside the drum;
a pulsator rotatably disposed above the drum base; and
A first flow path coupled to the outside of the drum base, coupled to the drum base, for guiding wash water flowing on the upper side of the drum base to the filter assembly when the pulsator rotates in one direction, and the other direction of the pulsator and a base bracket forming a second flow path for guiding wash water flowing on the upper side of the drum base to the filter assembly during rotation,
The drum base is
a base plate forming a bottom surface;
an upward perimeter bent upward from the outer periphery of the base plate; and
It extends in a direction away from the center of the drum base in the upward perimeter and includes a curved perimeter connected to the drum body,
The upward periphery is formed with a first inlet hole opened to communicate the inside of the drum and the first flow path, and a second inlet hole opened to communicate the inside of the drum and the second flow path,
The curved perimeter portion has a discharge hole that is opened so that the wash water flowing into the first inlet hole or the second inlet hole flows to the filter assembly disposed on the upper side of the drum base is formed. The method of claim 1,
The base bracket is coupled to the drum base to form a filter connection flow path for guiding wash water flowing through the first flow path or the second flow path to the filter assembly. The method of claim 1,
The first flow passage and the second flow passage are formed in a direction inclined to an imaginary normal line formed on the outer periphery of the drum base,
Each of the first flow path and the second flow path forms a flow path to be adjacent to each other as the distance from the center of the drum base increases. The method of claim 1,
The first flow path is formed in a direction in which the water flow formed by the one-way rotation of the pulsator flows,
The second flow path is a laundry treatment device formed in a direction in which the water flow formed by the rotation of the pulsator in the other direction flows. The method of claim 1,
The drum base has a first inlet hole opened to communicate the inside of the drum with the first flow path, and a second inlet hole opened to communicate the inside of the drum with the second flow path. 6. The method of claim 5,
The first inlet hole is opened in a direction in which the first flow path is formed,
The second inlet hole is opened in a direction in which the second flow path is formed. 6. The method of claim 5,
The drum base may have a discharge hole that is opened to allow the wash water introduced into the first inlet hole or the second inlet hole to flow to the filter assembly disposed above the drum base. delete 6. The method of claim 5,
The base bracket is
a main guide plate for guiding the wash water flowing into the first inlet hole or the second inlet hole to the filter assembly;
a side guide plate bent toward the drum base at both ends of the main guide plate to guide wash water to the filter assembly; and
and a central guide plate protruding from one side of the main guide plate to partition the first flow path and the second flow path. 10. The method of claim 9,
The center guide plate is a laundry treatment machine forming a pair of the side guide plates formed on both sides of the main guide plate, and the first flow path and the second flow path. 10. The method of claim 9,
The central guide plate is a laundry treatment machine having a '∧' shape such that the first flow path and the second flow path are merged downstream. 10. The method of claim 9,
The drum base is disposed between the first inlet hole and the second inlet hole and includes a partition for dividing the first inlet hole and the second inlet hole,
The central guide plate is a laundry treatment machine disposed in contact with the compartment. The method of claim 1,
The pulsator is a laundry treatment device including a plurality of lower ribs protruding downward from the lower side and extending radially from the central portion.

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