KR20140046718A - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine and, more specifically, a washing machine which includes a washing tub capable of improving the effect of washing. The washing machine comprises: a body; a water tub which is provided inside the body and which stores washing water; a washing tub which is rotatably provided inside the water tub and which contains laundry; a drive unit for rotating the washing drum; multiple protrusions protruding inside the washing tub; multiple polygonal planes forming the protrusions and having a polygonal shape; multiple through holes for draining, wherein at least one through hole is provided on each protrusion and in between the protrusions. The washing drum of the washing machine according to an embodiment of the present invention is provided to include protrusions composed of polygonal planes to generate friction forces between laundry and a washing tub, thereby improving washing power; and to have through holes evenly placed around the protrusions to prevent generation of a bottle neck phenomenon due to dewatering concentrated on a specific through hole, thereby increasing dewaterability.

Description

Washing Machine {Washing Machine}

The present invention relates to a washing machine, and more particularly to a washing machine including a washing tank that can increase the washing effect.

The washing machine is generally classified into a pulsator method and a drum method according to a washing method, and both the pulsator method and the drum method include a water tank and a washing tank.

However, in the case of the pulsator method, the rotating shaft of the washing tank in which the washing is performed is provided to be perpendicular to the ground. A pulsator for generating wash water flow is installed in the lower part of the washing tank. In the pulsator type washing machine, the washing tank and the pulsator are rotated by the motor while the laundry and the detergent water are put into the washing tank, and the pulsator stirs the laundry put into the washing tank with the washing water to remove the stain on the laundry. do.

In the case of the drum type, washing is carried out by the dropping. A lifter for lifting the laundry upward is disposed in the washing tank.

In the case of the pulsator type and the drum type, the periphery of the washing tank allows water to flow into the washing tank, and through-holes are provided to allow the water of the washing tank to be discharged from the washing tank when draining and dehydrating.

Conventionally, the through-holes are arranged in the inner surface of the flat washing tank, in this case there is a limit to increase the washing effect by the friction because the friction between the inner surface of the washing tank is not large.

One aspect of the present invention provides a washing machine that improves the structure of the washing tank to increase the washing power of the laundry and at the same time the washing water efficiently flows into the washing tank.

One aspect of the invention the main body; A water tank provided inside the main body to store wash water; A washing tank rotatably provided inside the water tank to accommodate laundry; A driving device for rotating the washing tank; A plurality of protrusions configured to protrude to the inside of the washing tub; A plurality of polygonal faces constituting the protrusions and having a polygonal shape; It provides a washing machine comprising a; a plurality of through-holes provided between each of the protrusions and the protrusions for drainage.

The protrusions may be spaced apart from each other.

The multiple surfaces may be provided to have different angles.

The polygonal surface may be a triangle having a triangular edge.

The plurality of triangles may be concentrated in the center of the protrusion to form a hexagon.

The outer portion of the protrusion may be provided in a curved shape so that the protrusion is close to a circle.

The plurality of through holes may be provided in a recess provided in an outer direction of the washing tank than the protrusion.

The depression may be provided flat.

The depression may include a recess at least partially recessed.

An array of through holes provided around the one protrusion may be provided to have a shape close to a hexagon.

The plurality of protrusions may be provided to have a plurality of rows and columns.

Another aspect of the invention the main body; A water tank provided inside the main body to store wash water; A washing tank rotatably provided inside the water tank to accommodate laundry; A driving device for rotating the washing tank; A plurality of protrusions configured to protrude to one side of the washing tub; A plurality of polygonal surfaces constituting the protrusions and provided on different planes; It is provided on the outermost surface of the washing tub and provides a washing machine comprising a; through-hole provided on the same plane.

Each of the protrusions may be provided to have a predetermined pattern.

Each of the protrusions may include a first row and a second row, and a protrusion forming the second row may be disposed between each of the protrusions constituting the first row.

The plurality of through holes may be provided between the protrusion and the protrusion.

The distance between the two nearest points between the protrusion and the protrusion may be at least d to at most d + 10 mm when the diameter of the through hole is defined as d.

The polygonal surface is a triangle having a triangular edge, and each triangle is dense to form a hexagon, and a triangle is disposed around the hexagon to form one protrusion.

Between the polygonal surface and the polygonal surface may be provided to be round.

Since the washing tub of the washing machine according to the embodiment of the present invention includes a protrusion having a plurality of polygonal surfaces, the washing force may be increased by generating frictional force between the laundry and the washing tub.

In addition, since the through hole is uniformly positioned around the protrusion, it is possible to prevent the dehydration bottleneck caused by dehydration concentration for a certain through hole, thereby increasing the dehydration rate.

1 is a cross-sectional view showing a cross section of a washing machine according to an embodiment of the present invention.
2 is an exploded perspective view of a washing tub applied to a washing machine according to an embodiment of the present invention.
3 is a view showing a state in which the washing tub is unfolded according to an embodiment of the present invention.
Figure 4 is a view showing a cross section of the washing tank is unfolded in accordance with an embodiment of the present invention.
5 to 7 are views illustrating a state in which the washing tub is unfolded according to various embodiments of the present disclosure.
8 is a view showing a cross section of the washing tank is unfolded according to another embodiment of the present invention.
9 is a view showing a state in which the washing tank is unfolded according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the drum washing machine will be described as an example, but the present invention is not limited thereto. The washing tub of the present invention may be applied to a fully automatic washing machine.

1 is a cross-sectional view showing a cross section of a washing machine according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a washing tank applied to a washing machine according to an embodiment of the present invention.

As shown in FIG. 1 and FIG. 2, the washing machine 1 has a main body 10 having an inlet 11 formed therein for loading laundry, and a water tank 20 installed inside the main body 10 and storing wash water. ), The washing tank 30 is rotatably provided inside the water tank 20 to accommodate the laundry. In addition, it includes a door 12 for opening and closing the inlet 11 of the main body 10.

The water tank 20 is installed to be inclined with respect to the installation surface of the washing machine 1 so that the front portion 20a having the inlet formed at a position higher than the rear portion 20b, and the washing tank 30 inside the water tank 20. ) Is also installed inclined in the same form as the water tank (20). However, the present invention is not limited thereto, and the water tank and the washing tank may be installed so as not to tilt.

The washing tub 30 is coupled to the rear portion 30a and is rotatably supported by the rotating shaft 13 passing through the rear portion 20b of the water tank 20. In addition, a drive motor 14 for rotating the rotating shaft 13 is provided outside the rear portion 20b of the water tank 20. As the driving motor 14 rotates the rotary shaft 13, the washing tub 30 inside the water tank 20 may rotate. The driving motor 14 rotates the washing tub 30 at a low speed during washing, and rotates the washing tub 30 at one direction at high speed when dewatering.

A detergent supply device 15 for supplying detergent to the inside of the water tank 20 and a water supply device 16 for supplying wash water to the inside of the water tank 20 are installed above the water tank 20. Detergent supply device 15 is installed on the front side of the main body (10). The water supply device 16 is a first water supply pipe 16b for connecting between the external water supply pipe 16a and the detergent supply device 15, and a second water supply pipe 16c for connecting between the detergent supply device 15 and the water tank 20. And a water supply control valve 16d installed in the first water supply pipe 16b to control the water supply. This is to allow the water supplied to the inside of the water tank 20 via the detergent supply device 15 so that the detergent can be supplied to the water tank 20 together with the water.

The heater 17 for heating the washing water of the water tank 20 is installed in the lower part of the water tank 20. The heater accommodating part 20c protruding downward is provided below the water tank 20 for installation of the heater 17. The heater 17 is accommodated in the heater accommodating part 20c and at the same time, the washing water may be accumulated in the heater accommodating part 20c.

The drainage device 40 for draining the wash water of the water tank 20 and the wash water circulation device 50 for supplying the wash water in the water tank 20 to the inside of the washing tank 30 are disposed in the outer bottom of the water tank 20. Is installed. The drainage device 40 includes a first drain pipe 42 connected to the drain hole 41 at the bottom of the water tank 20, a drain pump 43 installed at the first drain pipe 42, and a drain pump 43 connected to the outlet side. And a double drain pipe 44.

The washing water circulation system 50 extends toward the inlet 31 of the washing tank 30 from the flow path switching valve 51 and the flow path switching valve 51 installed in the second drain pipe 44 at the outlet side of the drain pump 43. It includes a water injection pipe 52, the injection nozzle 53 installed at the outlet of the wash water circulation pipe (52). The flow path switching valve 51 may switch the flow path so that the washing water at the outlet of the drain pump 43 is drained to the outside or flows toward the washing water circulation pipe 52. The flow path switching valve 51 may be composed of a conventional electric three-way valve. This is because when the drain pump 43 is operated while the flow path switching valve 51 is operated so that the washing water flows toward the washing water circulation pipe 52, the washing water in the water tank 20 is the first drain pipe 42 and the washing water. It is to be injected into the washing tank 30 through the circulation pipe (52). When the drain pump 43 operates while the flow path switching valve 51 is operated so that the wash water flows toward the second drain pipe 44 which guides the wash water to the outside, the wash water of the water tank 20 is drained.

The washing tub 30 has a rear portion 30a coupled to the rotating shaft 13, a front portion 30b having an inlet 31 formed therein, and a cylindrical circumference portion coupled to both front portions 30b and rear portions 30a, respectively. 30c). A plurality of lifters 33 are installed on the inner surface of the washing tub 30 to lift and drop the laundry inside when the washing tub 30 rotates. The washing force is provided on the inner surface of the rear portion 30a of the washing tub 30. A plurality of stirring projections 32 for improvement are formed. In addition, a plurality of protrusions 34 and a plurality of through holes 36 are arranged on the inner surface of the washing tub 30, which will be described later.

3 is a view showing a state in which the washing tank is unfolded according to an embodiment of the present invention, Figure 4 is a view showing a cross section of the unfolding state of the washing tank according to an embodiment of the present invention. (a) is a figure which shows the cross section of AA 'of FIG. 3, (b) is the figure which shows the cross section of BB'.

3 and 4, a plurality of protrusions 34 are provided inside the washing tub 30, and a plurality of through holes 36 are provided around the protrusion 34. As shown in the figure, the protrusion 34 may be provided to protrude in an inward direction from the outside of the washing tub 30, but is not limited thereto. The protrusion 34 includes a plurality of polygons 35 having a polygonal shape. As shown in the figure, the polygonal surface 35 may be provided as a triangle having a triangular edge, but is not limited thereto and may be provided as a polygon other than a triangle. The multiple surfaces 35 may be arranged to have different angles with respect to the surface of the washing tub 30. That is, each polygon 35 may exist in a different plane. As described above, the protrusions 34 may be provided on the polygonal surfaces 35 respectively present in different planes.

As shown in the figure, six triangular polygonal surfaces 35 are densely formed to form hexagonal pyramids (F1), and 18 triangles are densely packed around the hexagonal pyramid so that a total of 24 triangles are densified to form one protrusion (34). To form. The hexagonal pyramid F1 located at the center of the projection 34 is defined as the first projection 34a, and the projection formed of the triangle outside the hexagonal pyramid F1 is defined as the second projection 34b. The first protrusion 34a may protrude in the inner direction of the washing tub 30 as compared to the second protrusion 34b.

The polygonal surface 35 may be provided as an equilateral triangle or an isosceles triangle. The distance when the distance between one point P1 and one point P2 of the protrusion 34 in the rotation axis direction of the washing tub 30 is the maximum based on one protrusion 34 is defined as S1, and the washing tank The distance when the distance between one point P3 and one point P4 of the protrusion 34 in the circumferential direction 30 is the maximum is defined as S2. When the polygonal surface 35 is provided as an equilateral triangle, S1 and S2 are equally provided. However, when the polygonal surface 35 is provided as an isosceles triangle, S1 may be provided at 0.5 to 2 times S2. As in the embodiment of the present invention, when the protrusion 34 is composed of 24 triangles, S2 is provided at four times the height of the triangle. However, when more than 24 triangles are provided, S2 may increase in multiples of two. For example, in the case where 48 triangles are dense to form one protrusion, S2 may be six times the height of the triangle. The depth of the protrusion 34 formed on the surface of the washing tub 30 is defined as S3. When the polygonal surface 35 is an equilateral triangle, S1 and S2 may be provided at 5 to 30 times S3. When the polygonal surface 35 is an isosceles triangle, one of S1 and S2 may be provided 5 times to 30 times S3 based on a larger value of S1 and S2. That is, for example, when the S2 dimension is 2mm, at least one of S1 and S2 may be provided in the range of 10mm to 60mm.

When the multi-sided surface 35 is provided in a triangular shape, since one protrusion 34 may include the maximum number of multi-faceted surfaces, the damage caused by the laundry contacting the inside of the protrusion 34 is minimized. Can increase the washing power. However, the polygonal face 35 is not limited to a triangular shape, and the polygonal face 35 may be formed in a shape such as a rectangle or a hexagon to form a protrusion. The sides of the polygonal surface 35 forming the outline of the protrusion 34 may be provided in a curve. Accordingly, the protrusion 34 may have a shape close to a circle. In addition, between the polygonal surface 35 and the polygonal surface 35 constituting the protrusion 34 may be provided round. For example, the round (r) between the polygonal surface 35 and the polygonal surface 35 may be 0.2r to 0.5r. Accordingly, the surface of the washing tub 30 is smoothly formed to prevent damage to the laundry. Can be.

Each protrusion 34 may be disposed to be spaced apart. In addition, it may have various arrangement structures. In addition, a plurality of through holes 36 may be provided around the protrusion 34. At least one through hole 36 may be provided between each protrusion 34 and the protrusion 34. According to one embodiment of the present invention shown in the drawings, the through hole 36 is provided between the protrusion 34 and the protrusion 34, but is not limited thereto.

The plurality of through holes 36 may be provided in the recess 37 provided in the outward direction of the washing tub 30 rather than the protrusion 34. The depression 37 may be provided flat in a state in which the washing tub 30 is unfolded. However, when the washing tub 30 is rolled and joined, the depression 37 due to rolling corresponds to a curved surface. The through hole 36 may be provided in the depression 37. In this case, since the through-hole 36 is located far from the center of the washing tub 30, the efficiency of washing water inflow and outflow increases due to the action of centrifugal force. For example, when the through hole 36 is provided in a piercing manner, the diameter d 1 (see FIG. 4) of the through hole 36 may be provided as 1.8 mm to 3.5 mm. The separation distance G (see FIG. 3) of the closest point between the protrusion 34 and the protrusion 34 may be provided as a diameter d1 of the through hole 36 to a diameter d1 of the through hole + 10 mm.

The arrangement of the protrusions 34 may be provided in various ways. According to one embodiment of the invention, the protrusion 34 may be provided to have a plurality of rows (L1, L2) and columns (R1, R2). Among the protrusions 34 constituting the rows L1 and L2, the upper row is defined as the first row L1 and the lower row is defined as the second row L2. The protrusion 34 constituting the second row L2 may be positioned between the protrusions 34 constituting the first row L1. That is, the extraction portions 34 constituting the second row L2 may be alternately arranged between the protrusions 34 of the first row L1. At least one through-hole 36 may be provided between the protrusions 34. As shown in the figure, four through holes 36 are provided around one protrusion 34, but are not limited thereto. When the four through holes 36 are connected by a virtual dotted line, a quadrangular shape F2 may be provided.

5 to 8 are views illustrating a state in which the washing tub is unfolded according to various embodiments of the present disclosure.

5-8, the protrusions 44 and the apertures 46 may be arranged in a variety of ways.

According to the exemplary embodiment of the present invention illustrated in FIG. 5, the rows L3 and L4 and the columns R3 and R4 of the protrusion 44 may be provided in parallel with each other. That is, as shown in FIG. 3, it does not correspond to the case where the protrusions 44 are arranged between the protrusions 44. Four through holes 46 may be arranged around one protrusion 44, and one protrusion 44 and the other one may be arranged because the rows L3 and L4 and the columns R3 and R4 are arranged in a line. Only one through-hole 46 may be located between the protrusions 44 of the. That is, the through holes 46 are also arranged along the rows and columns of the protrusions 44. When the through hole 46 around one protrusion 44 is connected by a dotted line, a square shape F2 is formed.

In one embodiment of the invention shown in FIG. 6, there is a difference in the arrangement of the apertures 56. The protrusion 54 located in the second row L6 is located between the protrusions 54 in the first row L5. The through hole 56 may be located around the protrusion 54. Specifically, twelve through holes 56 may be positioned in one protrusion 54. When each through hole 56 is connected by an imaginary line, the through hole 56 has a shape F3 close to a hexagon. That is, the through hole 56 may be arranged to surround the circumference of the protrusion 54 in a hexagon. Since the through holes 56 are arranged to have a predetermined pattern, and a large number of through holes 56 are provided in comparison with other embodiments, dehydration bottlenecks caused by insufficient number of through holes during dehydration may be prevented to increase the dehydration rate. Can be. In addition, in the case of washing the product using the bubble, it is possible to improve the bubble bottleneck generated in the through hole to improve the time and amount of the bubble is introduced. In addition, since the through hole has a uniform pattern and is uniformly provided, it is possible to prevent a problem that the degree of washing varies depending on the position of the laundry.

In the embodiment of the present invention shown in Figures 7 and 8, the projections 64 may be provided side by side. That is, it does not correspond to the case where the protrusions are arranged between the protrusions as shown in FIG. 3 and FIG. 6. The through hole 66 may be arranged to have a hexagonal shape around the protrusion 64.

In one embodiment of the present invention, the through hole 66 may be provided as a burring ball. In the case of burring balls, burring is performed. In the case of carrying out a burring process, the edge part 68 protrudes in the outward direction of the washing tank 30 around the through-hole 66. The edge portions 67 and 68 may include an edge inner portion 67 that narrows in the outer direction of the washing tub 30, and an edge outer portion 68 that has a diameter widening in the outer direction of the washing tub 30. The edge outer portion 68 is located outside the washing tub 30 than the edge inner portion 67.

The diameter including the edge portions 67 and 68 formed through the burring process is defined as d2, and the diameter of the through hole 64 is defined as d3. In this case, the distance G of the closest point between the protrusion 64 and the protrusion 64 may be provided as d3 to d3 + 10 mm of the through hole. When the burring process is performed, the cross-sectional area of the depression 69 is determined in consideration of the inner diameter d2 and the outer diameter d3 formed by the edges 67 and 68. Therefore, the distance G of the closest point between the protrusion 64 and the protrusion 64 is increased as compared with the case without the burring process.

If the burring process is not carried out, the laundry may be torn out through the cut surface of the through hole, but when the burring process is performed, the edges 67 and 68 are formed to form the cut surface outside the washing tub 30 to prevent the laundry from being damaged. can do.

9 is a view showing a state in which the washing tank is unfolded according to another embodiment of the present invention.

In one embodiment of the invention shown in FIG. 9, the depression 77 may include a recess 79 at least partially recessed. That is, the recessed part 79 can be recessed in the outer direction from the inner side of the washing tank 30. A portion of the recess 79 may be provided with a through hole 76. More specifically, the through hole 76 may be provided at the center of the recess 79. In this case, since the through hole 76 is located at the outermost side of the washing tub 30, the washing water may smoothly flow in and out due to the action of the centrifugal force when the washing tub 30 is rotated.

The foregoing has shown and described specific embodiments. However, it should be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the technical idea of the present invention described in the following claims .

10: main body 20: water tank
30: washing tank 34, 44, 54, 64, 74: protrusion
35, 45, 55, 65, 75: Multifaceted 36, 46, 56, 66, 76: Through
37, 47, 57, 69, 77: depression 67: inner edge
68: border outer portion 79: recessed portion

Claims (18)

main body;
A water tank provided inside the main body to store wash water;
A washing tank rotatably provided inside the water tank to accommodate laundry;
A driving device for rotating the washing tank;
A plurality of protrusions configured to protrude to the inside of the washing tub;
A plurality of polygonal faces constituting the protrusions and having a polygonal shape;
A plurality of through holes provided between the respective protrusions and the protrusions for drainage;
Wherein the washing machine comprises a washing machine. The method of claim 1,
Washing machine, characterized in that the protrusions are arranged to be spaced apart from each other. The method of claim 1,
The multi-faceted washing machine characterized in that it is provided to have a different angle. The method of claim 3,
The multi-faceted washing machine characterized in that the triangle having a triangular edge. 5. The method of claim 4,
The washing machine, characterized in that the plurality of triangles are concentrated in the center of the protrusion to form a hexagon. The method of claim 1,
Washer, characterized in that the outer portion of the protruding portion is provided in a curved shape so that the protrusion is close to the circular shape. The method of claim 1,
The plurality of through holes are provided in the recess provided in the outer direction of the washing tank than the protrusion. 8. The method of claim 7,
Washing machine, characterized in that the depression is provided flat. 8. The method of claim 7,
And said recess comprises a recess at least partially recessed. The method of claim 1,
The through-hole arrangement provided around the one protrusion is characterized in that the washing machine is provided to have a shape close to the hexagon. 3. The method of claim 2,
The washing machine, characterized in that the plurality of protrusions are provided to have a plurality of rows and columns. main body;
A water tank provided inside the main body to store wash water;
A washing tank rotatably provided inside the water tank to accommodate laundry;
A driving device for rotating the washing tank;
A plurality of protrusions configured to protrude to one side of the washing tub;
A plurality of polygonal surfaces constituting the protrusions and provided on different planes;
A through hole provided on the outermost surface of the washing tub and provided on the same plane;
Wherein the washing machine comprises a washing machine. The method of claim 12,
Washing machine, characterized in that each protrusion is provided to have a predetermined pattern. 14. The method of claim 13,
And each of the protrusions includes a first row and a second row, and a protrusion forming the second row is disposed between each of the protrusions constituting the first row. The method of claim 12,
The plurality of through holes are provided between the protrusions and the protrusions. 16. The method of claim 15,
Washing distance of the two nearest points between the protrusion and the protrusion is characterized in that the minimum d to the maximum d + 10mm when defining the diameter of the through hole d. The method of claim 12,
The polygonal surface is a triangle having a triangular edge, each triangle is dense to form a hexagon, and a triangle is disposed around the hexagon to form a protrusion. The method of claim 12,
Washing machine, characterized in that provided between the polygonal surface and the polygonal surface round.

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