WO2018012852A1

WO2018012852A1 - Washing machine

Info

Publication number: WO2018012852A1
Application number: PCT/KR2017/007419
Authority: WO
Inventors: 이중희; 강정훈; 홍관우; 김민성; 강대욱; 김경한; 한주범
Original assignee: 삼성전자 주식회사
Priority date: 2016-07-12
Filing date: 2017-07-11
Publication date: 2018-01-18

Abstract

Disclosed is a washing machine comprising a washing tub which can enhance a laundry washing effect and laundry dewatering efficiency. The disclosed washing machine comprises: a body; a cylindrical washing tub, which is rotatably arranged inside the body and receives laundry; a plurality of recessed parts, which are formed on an inner circumferential surface of the washing tub and are arranged along the circumferential direction of the washing tub to form a pattern; and a first dewatering hole formed through each of the recessed parts, wherein the each recessed part is formed along the lengthwise direction of the washing tub.

Description

washer

The present invention relates to a washing machine including a washing tank that can increase the washing effect of the laundry.

Generally, a washing machine is 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.

In the case of the pulsator method, the drive 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. The washing machine of the pulsator type washes the laundry and the pulsator by the motor while the laundry and the washing 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 to be made by freefall. A lifter for lifting the laundry upward is disposed in the washing tank.

In the case of the pulsator type and the drum type, a dewatering hole is provided at the periphery of the washing tank to allow the water of the tank to flow into the washing tank, and to allow the water of the washing tank to be discharged from the washing tank during drainage and dehydration.

In the related art, dehydration holes are arranged on the inner surface of a flat washing tank, and in this case, the friction between the inner surface of the washing tank and the laundry is not large, and thus there is a limit in increasing the washing effect due to friction.

In addition, in the conventional drum type washing machine, laundry may be driven to the inlet side (frontward) during washing or dehydration, and the laundry collected at the inlet side may include a diaphragm or a door and an inlet connecting the main body and the water tank. There was a case of being damaged between them.

According to one embodiment of the present invention, it is possible to provide a washing machine that can improve the washing effect and dehydration efficiency.

In addition, according to one embodiment of the present invention, the dehydration bottleneck can be prevented to increase the dehydration rate.

In addition, as the pattern region is continuously provided on the surface of the washing tub, the rigidity of the washing tub may be increased.

In addition, according to an embodiment of the present invention, it is possible to prevent the laundry from gathering in front of the washing tank.

Washing machine according to an embodiment of the present invention, the main body; A cylindrical washing tub rotatably provided inside the main body to accommodate laundry; A plurality of recesses formed on an inner circumferential surface of the washing tub and arranged in a plurality in a circumferential direction of the washing tub to form a pattern; And first dehydration holes formed in the recesses, and the recesses are formed along the longitudinal direction of the washing tank.

The depression may be formed in a direction parallel to the drive shaft for driving the washing tank.

The pattern includes a first pattern region and a second pattern region spaced apart along the driving shaft direction, and at least one second dehydration formed between the first pattern region and the second pattern region. It may further include a ball.

The first dehydration hole may be located at both ends of the depression.

The depression is recessed from the inner circumferential surface of the washing tank toward the outside of the washing tank, the second inclined surface inclined downward along the circumferential direction of the washing tank and the second inclined upward in the circumferential direction of the washing tank It may include an inclined surface.

The first dewatering hole may be formed at a contact portion of the first inclined surface and the second inclined surface.

The depression may have a connection surface for smoothly connecting the first inclined surface and the second inclined surface.

The first dehydration hole may be formed in the connection surface.

The depression includes a guide groove formed on the connection surface, the first dehydration hole is located in the guide groove, the guide groove may be inclined toward the first dewatering hole.

The depression may be arranged in a direction inclined with respect to the drive shaft for driving the washing tank.

In addition, the washing machine of the present invention for achieving the above object, the main body having an inlet formed on the front; A cylindrical washing tank rotatably disposed in the main body and accommodating laundry introduced through the inlet; And a plurality of protrusions protruding from the inner circumferential surface of the washing tank toward the inside of the washing tank to form a pattern, wherein each of the protrusions may be bent in a spiral direction at least partially in a direction away from the inlet from a side adjacent to the inlet. have.

The washing tub is configured to rotate in a counterclockwise direction when dewatering, and the at least a portion of the protrusion may be bent in a right screw direction.

The protrusion includes a front end close to the inlet, a center part connected to the front end part, and a rear end part connected to the center part, the center part is bent in the right screw direction, and the front end part and the rear end part are parallel to the rotating shaft of the washing tub. can do.

The protrusion may include a plurality of depressions formed along the longitudinal direction of the protrusion.

The depression may be in the shape of an ellipse extending in the longitudinal direction of the protrusion.

The protrusion may include at least one first dehydration hole formed in the depression.

The protrusion may include at least one second dehydration hole formed between the plurality of depressions.

The plurality of protrusions may be arranged side by side along the circumferential direction of the washing tank.

The washing tank may include at least one third dehydration hole formed between the plurality of protrusions.

The protrusion may have a shape of a helix extending from the front end of the washing tub toward the rear end of the washing tub in a direction opposite to the rotation direction of the washing tub.

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

Figure 2 is an exploded perspective view showing a washing tank according to an embodiment of the present invention.

3 is a plan view illustrating an unfolded state of the washing tub according to an embodiment of the present invention.

4 is a cross-sectional view taken along line “A-A '” of FIG. 3.

5 is a plan view showing a state in which the washing tub is unfolded according to another embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along line "B-B '" of FIG.

7 is a plan view showing a state in which the washing tub is unfolded according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view taken along the line "C-C '" shown in FIG.

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

FIG. 10 is a sectional view taken along the line "D-D '" shown in FIG.

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

12 is a perspective view of the laundry tub shown in FIG. 11 as viewed from the front.

FIG. 13 is an exploded view of the washing tub shown in FIG. 12.

FIG. 14 is an enlarged view of the protrusion illustrated in FIG. 13.

FIG. 15 is an enlarged perspective view of a part of the washing tub shown in FIG. 12.

FIG. 16 is a cross-sectional view of the laundry tub of FIG. 15 taken along the line “E-E”. FIG.

17 is a perspective view of the laundry tub according to another embodiment of the present invention as viewed from the front.

18 is an exploded view of the washing tub shown in FIG. 17.

Hereinafter, embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 18. The embodiments described below will be described based on the embodiments best suited for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the embodiments described below. Illustrates that the present invention can be implemented as in the embodiments.

Accordingly, the present invention may be modified in various ways within the technical scope of the present invention through the embodiments described below, and such modified embodiments fall within the technical scope of the present invention. And in order to help the understanding of the embodiments described below, in the reference numerals described in the accompanying drawings, among the components having the same function in each embodiment, the related components are denoted by the same or extension number.

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 full load washing machine of a top load method.

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

1 and 2, the washing machine according to an embodiment of the present invention is installed in the main body 10, the inlet 11 is formed in the front, and the washing machine 10 is stored in the main body 10 to store the wash water The water tank 20, the washing tank 30 is provided rotatably inside the 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 inclined at a predetermined angle with respect to the installation surface of the washing machine 1 so that the front portion 20a having the inlet is positioned higher than the rear portion 20b, and the washing tank 30 inside the water tank 20 is also It is installed to be 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 rotatably supported by the drive shaft 13 passing through the rear portion 20b of the water tank 20. In addition, a drive motor 14 for rotating the drive shaft 13 is installed outside the rear portion 20b of the water tank 20. As the driving motor 14 rotates the drive shaft 13, the washing tank 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.

A drainage device 50 for draining the wash water of the water tank 20 and a wash water circulator 60 for supplying the wash water inside the water tank 20 to the inside of the washing tank 30 are disposed at an outer lower portion of the water tank 20. Is installed. The drainage device 50 may include a first drain pipe 52 connected to the drain port 51 under the water tank 20, a drain pump 53 installed on the first drain pipe 52, and a drain pump 53 connected to the outlet side. 2 includes a drain pipe (54).

The washing water circulation system 60 extends from the flow path switching valve 61 installed at the second drain pipe 54 at the outlet side of the drain pump 53 to the inlet 31 of the washing tank 30 from the flow path switching valve 61. And a spray nozzle 63 installed at the outlet of the water circulation pipe 62 and the wash water circulation pipe 62. The flow path switching valve 61 may change the flow path so that the washing water at the outlet of the drain pump 53 is drained to the outside or flows toward the washing water circulation pipe 62.

The flow path switching valve 61 may be composed of a conventional electric three-way valve. This is because when the drain pump 53 is operated while the flow path switching valve 61 is operated so that the washing water flows toward the washing water circulation pipe 62, the washing water in the water tank 20 is the first drain pipe 52 and the washing water. It is to be injected into the washing tank 30 through the circulation pipe (62). When the drain pump 53 operates while the flow path switching valve 61 is operated so that the wash water flows toward the second drain pipe 54 for guiding the wash water to the outside, the wash water of the water tank 20 is drained.

Washing tub 30 may be cylindrical, the rear portion 30a coupled to the drive shaft 13, the front portion 30b is formed with the inlet 31, both ends are coupled to the front portion 30b and the rear portion 30a, respectively It includes a cylindrical circumference 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 pattern 40 including at least one recess 42 and at least one dehydration hole 43 is arranged on an inner surface of the washing tub 30.

The inner surface of the circumferential portion 30c of the washing tub 30 constitutes an inner circumferential surface of the washing tub 30.

3 is a plan view illustrating an unfolded state of the washing tub according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line “A-A '” of FIG. 3.

3 and 4, at least one pattern 40 may be provided inside the washing tub 30 according to an exemplary embodiment. Hereinafter, a description will be given with reference to one pattern 40, but an embodiment in which a plurality of patterns 40 are provided will be described later.

The pattern 40 may be formed of a plurality of depressions 42 formed along the longitudinal direction of the washing tub 30 on the inner circumferential surface of the washing tub 30. That is, the plurality of depressions 42 may be formed on the inner circumferential surface of the washing tub 30, and may be arranged in plural along the circumferential direction of the washing tub 30 to form the pattern 40. In addition, each recess 42 is formed along the longitudinal direction of the washing tub (30).

The depression 42 is formed to extend toward the rear portion 30a coupled to the drive shaft 13 from the front portion 30b in which the inlet 31 is formed, and the washing tub 30 has the depression 42 and the depression ( It may include a first dehydration hole 43 formed in 42. The depression 42 may have a longitudinal direction parallel to the drive shaft 13 for driving the washing tub 30. In addition, the depressions 42 may be arranged in plurality along the circumferential direction of the washing tank 30.

In one example, the depression 42 is recessed from the inner circumferential surface of the washing tub 30 toward the outside of the washing tub 30. In addition, the depression 42 is connected to the first inclined surface 421 and the first inclined surface 421 inclined downward along the circumferential direction of the washing tub 30 and the second inclined upward in the circumferential direction of the washing tub 30. It may be formed by the inclined surface 422. The first dehydration hole 43 may be positioned at a contact portion to which the first inclined surface 421 and the second inclined surface 422 are connected, and are spaced apart at equal intervals along the longitudinal direction of the recess 42. Can be.

The third inclined surface 423 is connected to the second inclined surface 422 in a shape corresponding to the first inclined surface 421, and the fourth inclined surface 424 is in a shape corresponding to the second inclined surface 422. 423). That is, the depressions 42 may be continuously arranged along the circumferential direction of the washing tub 30.

The contact portion to which the second inclined surface 422 and the third inclined surface 423 are connected may be defined as the protrusion 41, and the protrusion 41 may have a triangular shape. The protrusion 41 may have a predetermined height h ₁ based on the bottom (or outer circumferential surface) of the washing tub 30. When the height of the protrusion 41 satisfies at least 2 mm or more, it is effective for improving the water content (weight after washing-weight before washing / weight before washing * 100 (%)).

In addition, the straight line distance d ₁ of the second inclined surface 422 and the third inclined surface 423 may be provided to have 20 mm or more. When the straight line distance d ₁ is less than 20 mm, the effect of improving the moisture content is insignificant, but when the straight line distance d ₁ is 20 mm or more, the water content improvement effect of about 3% or more may be improved.

In addition, the washing force may be increased by increasing the friction force between the laundry and the washing tub 30 by increasing the friction force between the laundry and the washing tub 30 through the triangular protrusion 41 pattern 40.

FIG. 5 is a plan view illustrating an unfolded state of a washing tub according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line “B-B '” of FIG. 5. Hereinafter, a description will be given focusing on differences from a washing tub according to an embodiment of the present invention described with reference to FIGS. 1 to 4, and a description omitted may be replaced with the above description.

5 and 6, at least one pattern 40a may be provided inside the washing tub 30 according to another exemplary embodiment of the present invention.

Pattern 40a according to another embodiment of the present invention is a recessed portion (42a) and recessed portion extending from the front portion (30b) in which the inlet 31 is formed toward the rear portion (30a) coupled to the drive shaft 13 ( It may include a first dehydration hole (43a) formed in 42a). The depression 42a may be arranged in a direction inclined with respect to the drive shaft 13 for driving the washing tub 30. In addition, the depressions 42a may be formed side by side along the circumferential direction of the washing tub 30. The first dehydration hole 43a may be located in the depression 42a. A protrusion 41 may be provided between the depression 42a and the depression 42a, and the cross section of the protrusion 41 may have a triangular shape.

FIG. 7 is a plan view illustrating an unfolding state of a washing tub according to another embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along the line “C-C” of FIG. 7.

7 and 8, at least one pattern 40b may be provided inside the washing tub 30 according to another exemplary embodiment of the present invention.

Pattern 40b according to another embodiment of the present invention is a recessed portion (42b) and the depression extending from the front portion (30b) in which the inlet 31 is formed toward the rear portion (30a) coupled to the drive shaft 13 It may include a dehydration hole (43b) formed in (42b). The depression 42b may have a lengthwise direction parallel to the drive shaft 13 for driving the washing tub 30. In addition, the depression 42b may be formed side by side in the circumferential direction of the washing tub 30.

For example, the depression 42b may have a length less than 1/2 of the length of the front and rear portions of the washing tub 30, and when the depression 42b has a length less than 1/2, the driving shaft ( 13) may be spaced apart along the direction.

For example, referring to FIG. 7, the depressions 42b may be arranged in four rows spaced apart along the direction of the driving shaft 13. As a result, the pattern 40b may include a plurality of pattern sections. As an example, as shown in FIG. 7, the pattern 40b may include the first to the fourth along the direction of the driving shaft 13. The pattern areas 40ba, 40bb, 40bc, and 40bd may be included. As described above, each of the recesses 42b is provided with first dehydration holes 43b. In addition, the first dehydration holes 43b may be formed at both ends of the depressions 42b, respectively, and at least one first dehydration hole at equal intervals between the first dehydration holes 42b respectively positioned at both ends. 42b) may be further provided.

For example, the straight line distance d ₂ between the first dehydration holes 42b formed in the second pattern region 40bb positioned closest to the first dehydration holes 42b formed in the first pattern region 40ba is at least. It may be positioned to be spaced apart by more than 10mm. In addition, the linear distance d ₂ between the second pattern region 40bb and the first dewatering hole 42b formed in the third pattern region 40bc and the third pattern region 40bc and the fourth pattern region 40bd. The linear distance d ₂ between the first dehydration holes 42b may also be positioned to be spaced apart by at least 10 mm or more. The linear distances d ₂ spaced apart from each other between the first dehydration holes 42b provided in the respective pattern regions 40ba, 40bb, 40bc, and 40bd may be the same. This is to improve the processability of the washing tub 30 and to maintain the strength at the same time.

In addition, a second second dehydration hole 46b may be formed between each of the pattern regions 40ba, 40bb, 40bc, and 40bd. The second dehydration hole 46b is formed between the pattern areas 40ba, 40bb, 40bc, and 40bd, so that dehydration bottleneck occurs due to the concentration of dehydration in the first dewatering hole 42b of the preset pattern. Can be prevented in advance to increase the dehydration rate.

FIG. 9 is a plan view illustrating an unfolded state of a washing tub according to another embodiment of the present invention, and FIG. 10 is a cross-sectional view taken along line “D-D” of FIG. 9. Hereinafter, a description will be given focusing on a difference from the washing tub according to FIGS. 7 and 8, and the description omitted may be replaced with the above description.

At least one pattern 40c may be provided inside the washing tub 30.

Various accessories may be coupled to the inside of the washing tub 30. Examples of accessories include lifters 33 and guide filters. The lifter 33 is mainly used in the drum washing machine for the smooth flow of the laundry, the guide filter may be mainly used in the fully automatic washing machine. The portion of the washing tub 30 to which these accessories are coupled is defined as the coupling portion 48c.

Each pattern 40c positioned inside the washing tub 30 may be positioned at the boundary of the coupling portion 48c. That is, when the coupling part 48c is one, two patterns 40c may be provided. When the coupling part 48c is two, three patterns 40c may be provided.

The pattern 40c is a first dewatering formed in the depression 42c and the depression 42c extending from the front portion 30b having the inlet 31 formed toward the rear portion 30a coupled to the drive shaft 13. Ball 43c. The depression 42c may have a lengthwise direction parallel to the drive shaft 13 for driving the washing tub 30. In addition, the depression 42c may be formed side by side in the circumferential direction of the washing tub 30. The depressions 42c may be arranged in plural and spaced apart along the direction of the driving shaft 13.

9 and 10, the depressions 42c may be arranged in a plurality of rows spaced apart along the direction of the driving shaft 13. In one example, the depressions 42c may be arranged in eight rows along the direction of the drive shaft 13. As described above, each recess 42c is provided with a first dehydration hole 43c. In addition, the first dehydration hole (43c) is located at both ends of the depression 42c, respectively, between the first dehydration holes (43c) respectively located at both ends are separate first dewatering hole (43c) is located at equal intervals It may be arranged further. In addition, a second dehydration hole 46c may be formed between each of the depressions 42c.

The depression 42c is connected to the first inclined surface 421c and the first inclined surface 421c which are inclined downward along the circumferential direction of the washing tub 30 and the second inclined surface which is inclined upward in the circumferential direction of the washing tub 30 ( 422c and the first connection surface 44c which connects the first inclined surface 421c and the second inclined surface 422c to be flat. In addition, the depression 42c may further include a second connection surface 47c connecting the first connection surface 421c and the respective

inclined surfaces

421c and 422c, respectively. The protrusion 41c connecting the first inclined surface 421c and the second inclined surface 422c may have a rounded shape.

A plurality of first dehydration holes 43c may be provided at both ends of the first connection surface 44c, respectively. Although not shown, the first dehydration hole 43c may be further provided between the first dehydration holes 43c respectively positioned at both ends.

Guide grooves 430c may be formed in the first connection surface 44c. The guide groove 430c may be positioned to have the same center as the first dewatering hole 43c with an outer diameter larger than the first dewatering hole 43c formed in the connection surface 44c. The guide groove 430c may have a shape in which a cross-sectional area decreases toward the first dehydration hole 43c. For example, the distance between the outer circumferential surface of the guide groove 430c and the outer circumferential surface of the first dehydration hole 43c may be 1 mm or more. The water content of the laundry can be improved by 1% or more by setting the distance between the dehydration holes 43c from the outer circumferential surface of the guide groove 430c to 1 mm or more.

That is, by using the

patterns

40, 40a, 40b, and 40c according to various embodiments of the present disclosure, it is possible to provide a washing machine 1 capable of increasing washing power of laundry and maximizing dewatering efficiency of the laundry. In addition, by providing the

patterns

40, 40a, 40b, and 40c of the improved structure, the rigidity of the washing tub 30 can be maximized so that the user can prolong the use of the washing tub 30 and the washing machine 1.

11 is a cross-sectional view of the washing machine 2 according to another embodiment of the present invention.

Since the washing machine 2 shown in FIG. 11 is similar in structure to most of the washing machine 1 shown in FIG. 1, a description overlapping with the washing machine 1 of FIG. 1 will be omitted.

However, in the washing machine 2 according to another embodiment of the present invention, the water tank 20 and the washing tank 70 disposed inside the main body 10 are disposed in a substantially horizontal direction with the installation surface of the washing machine 2. There is a difference from the washing machine 1 shown in FIG.

However, as described above, the arrangement structure of the water tank 20 and the washing tank 70 is not limited thereto, and the water tank 20 and the washing tank 70 are the same as the washing machine 1 according to the embodiment of the present invention. It may be disposed to be inclined with respect to the installation surface of the washing machine.

The washing machine 2 includes a main body 10 having an inlet 11 for inputting laundry, a water tank 20 installed inside the main body 10 to store wash water, and an inside of the water tank 20. It includes a washing tub 70 rotatably provided to accommodate laundry.

The washing tub 70 is coupled to the rear portion 70a and rotatably supported by the drive shaft 13 passing through the rear portion 20b of the water tank 20.

The drive shaft 13 is coupled to the drive motor 14. Through this, the washing tank 70 may be rotated by receiving the driving force of the drive motor 14 from the drive shaft (13). The driving motor 14 rotates the washing tank 70 in one direction or the other direction at the time of washing, and rotates the washing tank 70 in one direction at the time of dehydration.

As described above, since the water tank 20 and the washing tank 70 are disposed in the horizontal direction with the installation surface of the washing machine 2, the drive shaft 13 is also disposed in the horizontal direction with the installation surface of the washing machine 2. Therefore, the center axis line 13a of the drive shaft 13 may be parallel to the installation surface of the washing machine 2.

FIG. 12 is a perspective view of the washing tub 70 illustrated in FIG. 11, and FIG. 13 is an exploded view of the washing tub 70 illustrated in FIG. 12.

Hereinafter, a washing tank 70 according to another embodiment of the present invention will be described with reference to FIGS. 11 to 13.

For convenience of description, the door 12 side shown in FIG. 11 is defined as the front, and the drive motor 14 is defined as the rear. In addition, in FIG. 12 and FIG. 13, only the circumference 70c in which the plurality of protrusions 100 are formed on the inner surface is illustrated in FIG. 12 and FIG. 13, and the rear portion 70a and the front portion 70b which are omitted are illustrated in FIG. 12. The rear portion 30a and the front portion 30b shown in FIG. 2 may be replaced.

The washing tub 70 may have a cylindrical shape open toward the front to be connected to the inlet 11 formed on the front side of the washing machine 1. Since the washing tank 70 is similar in structure to most of the washing tank 30 shown in FIG. 2, redundant description thereof will be omitted.

The washing tub 70 has a rear portion 70a coupled to the drive shaft 13, a front portion 70b having an inlet 71 through which laundry is input, and a circumference 70c connecting the rear portion 70a and the front portion 70b. ). In addition, a plurality of lifters 73 are provided on the inner side of the circumference 70c to lift and drop the laundry according to the rotation of the washing tub 70.

The inner side surface of the circumference 70c of the washing tub 70 constitutes the inner circumferential surface of the washing tub 70.

The inlet 71 of the washing tub 70 is connected to the inlet 11 formed on the front surface of the main body 10. Through this, the washing tub 70 may accommodate the laundry introduced through the inlet 11 and the inlet (71).

12 and 13, the washing tub 70 includes a plurality of protrusions 100 protruding from the inner circumferential surface of the washing tub 70 toward the inside of the washing tub 70. Specifically, the plurality of protrusions 100 may be formed on the inner side of the circumference 70c to form a pattern. In describing the structure of the protrusion 100, the inner circumferential surface of the washing tub 70 and the inner surface of the circumference 70c may refer to the same configuration and may be mixed.

The plurality of protrusions 100 may be arranged side by side along the circumferential direction of the washing tank 70, so that the plurality of protrusions 100 may easily contact the laundry introduced into the washing tank 70.

The washing tub 70 includes a plurality of fastening portions 71 formed on the inner side of the circumference 70c to which the plurality of lifters 73 are coupled.

As shown in FIG. 13, a plurality of fastening portions 71 may be disposed between the plurality of protrusions 100 arranged side by side.

Accordingly, the plurality of protrusions 100 arranged side by side between the plurality of fastening parts 71 may constitute respective patterns, and the fastening parts 71 may be disposed between the patterns.

In addition, the plurality of fastening portions 71 may each include a plurality of fastening holes, and the plurality of lifters 73 may be coupled to the inner circumferential surface of the washing tub 70 through the fastening holes of the corresponding fastening portions 71, respectively. .

Hereinafter, the structure of the plurality of protrusions 100 will be described in detail.

Each protrusion 100 protrudes from the inner circumferential surface of the washing tank 70 toward the inside of the washing tank 70 and extends in a direction away from the inlet 11 from a side adjacent to the inlet 11 of the inner circumferential surface of the washing tank 70. .

In addition, each of the protrusions 100 may be replaced by recesses recessed outward from the inner circumferential surface of the washing tub 70. However, hereinafter, each protrusion 100 will be described as an example that protruded toward the inside of the washing tank (70).

The plurality of protrusions 100 protruding toward the inside of the washing tub 70 may be shaped to protrude upwardly inwardly from both ends based on the width direction of each of the protrusions 100, and may be a surface of each protrusion 100. May be composed of curved surfaces.

Each protrusion 100 may extend along the longitudinal direction of the washing tub (70). In addition, each protrusion 100 may extend from the front end 70F of the circumference 70c adjacent to the inlet 11 toward the rear end 70R opposite to the front end 70F. have.

In addition, at least a portion of each protrusion 100 is curved in a helix direction. Meaning that at least a portion of the protrusion 100 is bent in a helical direction means that at least a portion of the protrusion 100 extends in a spiral shape along the longitudinal direction of the washing tub 70 on the inner circumferential surface of the washing tub 70.

Through this, the plurality of protrusions 100 may interfere with the laundry in the washing tank 70, and may move the laundry on the inner circumferential surface of the washing tank 70.

Specifically, at least a portion of the protrusion 100 may be bent in a helical direction to move the laundry in the washing tub 70 in a desired direction while the washing machine 2 operates in the dehydration mode. As an example, the washing tub 70 according to an embodiment of the present invention is configured to rotate at a high speed in a counterclockwise direction when dewatering, and at least a portion of each protrusion 100 is bent in a right handed screw direction. Can be configured.

At least a portion of each protrusion 100 is bent in the right-handed direction, so that the laundry contained in the washing tub 70 is rotated by a plurality of protrusions while the washing tub 70 rotates at a high speed in a counterclockwise direction and performs dehydration of the laundry. Interfering with 100 and may move in a direction away from the inlet 11 along the plurality of protrusions 100 on the inlet 11 side. That is, the plurality of protrusions 100 may guide the laundry so that the laundry accommodated in the washing tub 70 moves from the front end 70F of the washing tub 70 to the rear end 70R when dewatering.

In addition, when the washing tub 70 is configured to rotate at a high speed in the clockwise direction when dewatering, at least a portion of each protrusion 100 is configured to be bent in the direction of the left hand screw, thereby washing laundry inside the washing tub 70 during dehydration. It can be moved toward 70R of rear ends of 70.

In addition, each protrusion 100 may be understood that at least a portion of the protrusion 100 is bent in a direction opposite to the rotation direction of the washing tub (70).

The meaning that the plurality of protrusions 100 are bent may be understood as a part or all of the plurality of protrusions 100 curved along the inner circumferential surface of the washing tub 70 having a curved surface.

In FIG. 12 and FIG. 13, the rotation direction of the washing tub 70 rotating in the counterclockwise direction is indicated by the arrow "R", and the curved direction of the protrusion 100 at least partially bent in the right-hand direction is indicated by the arrow "C1". It was.

As described above, the rotation direction R of the washing tub 70 at the time of dehydration may be set in the counterclockwise direction. In addition, the rotation direction R of the washing tub 70 rotating in the counterclockwise direction based on the developed view of the washing tub 70 illustrated in FIG. 13 may be displayed in a left to right direction.

As shown in FIG. 12, at least a portion of the protrusion 100 may be in the shape of a spiral bent in the right-hand direction.

In addition, when looking at the washing tank 70 from the front upper side of the washing tank 70, it is understood that the curved direction (C1) of each protrusion 100 located in the inner lower portion of the washing tank 70 is bent from the right to the left. Can be. However, since the washing tub 70 rotates, when looking at the washing tub 70 from the front lower side of the washing tub 70, the direction C of each of the protrusions 100 located at the inner upper portion of the washing tub 70 is bent from the left side. It appears to be curved in the right direction.

Referring to FIG. 13, the rotation direction R of the circumferential portion 70c of the washing tub 70 rotating in the counterclockwise direction may be displayed from left to right based on the developed view of the washing tub 70.

In addition, the curved direction C1 of each protrusion 100 may be displayed to be inclined from the right side to the left side. Therefore, the direction in which at least a portion of each protrusion 100 is bent may be described as being a direction opposite to the rotation direction of the washing tub 70.

In manufacturing the washing tub 70 according to another embodiment of the present invention, the circumference 70c forms a plurality of protrusions 100 bent in a right-to-left direction C1 on a rectangular metal plate, The metal plate on which the protrusion 100 is formed may be manufactured by bending the cylindrical plate.

Through this, each of the protrusions 100 formed on the inner circumferential surface of the cylindrical washing tub 70 may be configured to be bent in the direction of the right screw at least a portion corresponding to the washing tub 70 rotating in the counterclockwise direction, a plurality of protrusions ( 100 may move the laundry which is driven to the inlet 11 side during dehydration to the rear end 70R side of the washing tank 70. However, the degree of bending of each protrusion 100 may move the laundry from the front end 70F of the washing tank 70 toward the rear end 70R, and prevent the laundry from gathering at the rear portion 70a of the washing tank 70. It is desirable to bend to the extent that it is. For example, the direction C1 of bending at least a portion of each protrusion 100 based on FIG. 13 may form an obtuse angle with the rotation direction R of the washing tub 70, and the obtuse angle may be greater than 90 degrees and less than or equal to 135 degrees. Can be.

In addition, in explaining the relationship between the rotation direction of the washing tank 70 and the direction in which the protrusion 100 is bent, the washing tank 70 is divided into upper and lower parts based on the central axis 13a shown in FIG. 12. can do.

In the description of the washing tub 70 rotating in the counterclockwise direction and the plurality of protrusions 100 squeezed in a direction opposite to the rotation direction R of the washing tub 70, each protrusion located at the lower portion of the washing tub 70 ( 100 moves from left to right and at least a portion of each protrusion 100 located below the washing tub 70 is bent from right to left.

In addition, the protrusion 100 positioned on the upper portion of the washing tub 70 moves from the right side to the left side, and at least a portion of each protrusion 100 disposed on the upper portion of the washing tub 70 is bent from the left side to the right side. However, since the washing tank 70 rotates based on the central axis 13a, the upper and lower portions of the washing tank 70 described above are relative parts of the rotating washing tank 70.

Therefore, the meaning that at least a portion of each of the protrusions 100 is bent in a direction opposite to the rotation direction R of the washing tank 70 means that each of the protrusions at least a portion of each of the protrusions 100 is rotated according to the rotation of the washing tank 70. It can be understood that it is bent in a direction opposite to the instantaneous movement direction of (100), and, on the basis of the development of the circumference (70c), each projection in the direction opposite to the rotation direction (R) of the washing tub (70) It can be understood that at least a portion of 100 is bent.

As such, the plurality of protrusions 100 protruding from the inner circumferential surface of the washing tub 70 are each bent in a direction opposite to the rotation direction R of the washing tub 70, thereby allowing laundry inside the rotating washing tub 70 to enter the inlet 11. Can be moved away from).

In addition, the plurality of protrusions 100 may be continuously disposed along the circumferential direction of the washing tank 70 to effectively move the laundry rotating in contact with the inner surface of the circumference 70c from the front to the rear.

Through this, the washing tank 70 having a plurality of protrusions 100 can prevent the laundry from moving to the inlet 11 side during the washing and dehydration process, and the laundry between the inlet 11 and the door 12. Damage to the gap or diaphragm (not shown) of the can be prevented.

However, in the above-described embodiment, in order to prevent the laundry from being damaged by being driven to the inlet 11 side during dehydration, the laundry is transferred from the front end 70F of the washing tank 70 to the rear end 70R through the plurality of protrusions 100. Although the structure for moving toward one example has been described as an example, the laundry inside the washing tub 70 may be moved in a desired direction in a dehydration process by changing a bending direction and a degree of bending of at least a portion of each protrusion 100. .

FIG. 14 is an enlarged view of the protrusion 100 illustrated in FIG. 13.

Referring to FIG. 14, each protrusion 100 includes a front end portion 100a proximate to the inlet 11, a central portion 100b connected to the front end portion 100a, and a rear end portion 100c connected to the central portion 100b. .

As shown in FIG. 14, the front end portion 100a of the protrusion 100 close to the inlet 11 is a portion of the protrusion 100 adjacent to the front end 70F of the washing tub 70, and the rear end portion 100c is It may be composed of a portion of the protrusion 100 adjacent to the rear end 70R of the washing tub 70.

In addition, the central portion 100b is bent in the spiral direction. As an example, when the washing tub 70 is configured to rotate in the counterclockwise direction when dewatering, the central portion 100b may be configured to be bent in the right-hand direction. That is, the central portion 100b is bent in the direction C1 opposite to the rotational direction R of the washing tub 70, and the front end portion 100a and the rear end portion 100c are rotating shafts (driving shaft 13 of the washing tub 70). It can be formed in parallel with)).

As such, the washing tub 70 is configured to rotate in a counterclockwise direction when dewatering, and the central portion 100b of the protruding portion 100 is bent in the right-handed direction, so that the laundry that interferes with the central portion 100b during dewatering is rear end. To 100c.

That is, each of the protrusions 100 is bent in the direction (C1) opposite the rotation direction (R) of the washing tank 70, the central portion (100b), to move the laundry in contact with the central portion (100b) toward the rear end portion (100c). You can.

In addition, the rear end portion 100c may be formed in parallel with the drive shaft 13 to move the laundry moved to the rear end portion 100c back and forth on the rear end portion 100c. Through this, the rear end portion 100c may disperse the laundry on the rear end portion 100c and prevent the laundry from being agglomerated or twisted on the rear portion 70a of the washing tub 70.

In addition, the front end portion (100a) is also formed in parallel with the drive shaft 13, it is possible to distribute the laundry on the front end portion (100a). Through this, the laundry on the front end portion (100a) can be more effectively entered into the central portion (100b).

In order to effectively guide the movement of the laundry, it is preferable that the central portion 100b of each protrusion 100 is configured to be longer than the front end portion 100a and the rear end portion 100c.

In addition, each of the protrusions 100 may be configured to be bent in the direction of the right-hand screw without the division of the front end portion (100a), the center portion (100b) and the rear end portion (100c), the entire protrusion portion 100 of the washing tank 70 It may be configured to be bent in the direction (C1) opposite to the rotation direction (R) of. In addition, the protrusion 100 may be composed of only the front end portion 100a and the central portion 100b or the central portion 100b and the rear end portion 100c.

However, the detailed structure of each protrusion 100 is not limited to the above-described example, and the laundry may be replaced with various structures that are bent along the protrusion 100 such that laundry moves in a direction away from the inlet 11 at the inlet 11 side. have.

FIG. 15 is an enlarged perspective view of a portion of the washing tub 70 illustrated in FIG. 12, and FIG. 16 is a cross-sectional view of the washing tub 70 illustrated in FIG. 15 taken along the line “E-E”.

14 to 16, each protrusion 100 includes a plurality of depressions 110 formed along the longitudinal direction of the protrusion 100.

Each of the protrusions 100 protrudes from the inner circumferential surface of the washing tank 70 toward the inside of the washing tank 70, and the plurality of recesses 110 formed inside the protrusion 100 are washed from the inner circumferential surface of the washing tank 70. 70) is formed concave toward the outside.

Therefore, in each of the protrusions 100, the protrusions protruding from the inner circumferential surface of the washing tub 70 and the recesses 110 concave from the inner circumferential surface of the washing tub 70 are sequentially disposed in a direction away from the inlet 11 side. Through this, the laundry can be moved more effectively in the direction away from the inlet 11 from the inlet 11 side.

In addition, each depression 110 may be in the shape of an ellipse extending along the longitudinal direction of the protrusion 100. Through this, the laundry may move more effectively along the plurality of protrusions 100 from the front of the washing tank 70 to the rear.

In addition, the washing tank 70 includes a plurality of

dewatering holes

121, 122, and 123 formed in the plurality of protrusions 100.

In detail, each of the protrusions 100 includes at least one first dehydration hole 121 formed in the depression 110.

The water separated from the laundry in the dehydration process can be easily moved to the depression 110, the water moved to the depression 110 is easily discharged to the outside of the washing tank 70 through the first dewatering hole 121. Can be.

In FIGS. 14 to 16, two first dehydration holes 121 are formed in each recess 110, but the size and quantity of the first dehydration holes 121 formed in the depression 110 are illustrated in FIGS. Various changes are possible.

In addition, as a replacement of the protrusion 100 described above, the pattern of the washing tub may be composed of a plurality of depressions formed concave from the inner circumferential surface of the washing tub. Can be formed. In addition, the first dewatering hole is formed between the inner side of the recessed portion and the outer side of the protruding portion, so that the water moved to the inner side of the recessed recessed portion can be easily discharged.

In addition, each of the protrusions 100 includes at least one second dehydration hole 122 formed between the plurality of recesses 110.

As illustrated in FIGS. 14 and 15, three second dehydration holes 122 may be disposed between the plurality of recesses 110 in the width direction of the protrusion 100.

A second dehydration hole 122 may be formed between each of the depressions 110 formed in the protrusion 100 and the adjacent depressions 110. Through this, the water in the washing tank 70 may be discharged to the outside more effectively. You can.

In addition, the washing tank 70 includes at least one third dehydration hole 123 formed between the plurality of protrusions 100.

Since a plurality of protrusions 100 formed on the inner circumferential surface of the washing tub 70 protrudes toward the inside of the washing tub 70, the height between the plurality of protrusions 100 is lower than that of the protruding protrusion 100. Therefore, the water separated from the laundry in the dehydration process can be easily moved between the plurality of protrusions (100).

Accordingly, the third dewatering hole 123 formed between the plurality of protrusions 100 may easily discharge the water moved between the plurality of protrusions 100 to the outside of the washing tank 70.

In addition, since the plurality of protrusions 100 are continuously disposed along the circumferential direction of the washing tub 70, the third dehydration hole 123 may be formed on the boundary between each of the protrusions 100 and the adjacent protrusions 100. have. In addition, the plurality of third dehydration holes 123 may be disposed along the length direction of the protrusion 100 on the boundary between the plurality of protrusions 100.

17 is a perspective view of the washing tub 80 according to another embodiment of the present invention, and FIG. 18 is an exploded view of the washing tub 80 illustrated in FIG. 17.

Hereinafter, the structure of the washing tub 80 according to another embodiment of the present invention will be described with reference to FIGS. 17 and 18. However, since the washing tank 80 illustrated in FIGS. 17 and 18 has the same structure as that of the washing tank 70 illustrated in FIGS. 12 and 13, a redundant description thereof will be omitted.

The washing tub 80 includes a plurality of protrusions 200 protruding from the inner side. A plurality of protrusions 200 are formed on the inner surface (inner circumferential surface of the washing tub 80) of the circumference 80c, each protrusion 200 extends in a direction away from the inlet 11 from the side adjacent to the inlet 11 Is formed.

In addition, each of the protrusions 200 may be at least partially bent in a spiral direction and may be understood to be bent in a direction C2 opposite to the rotation direction R of the washing tub 80.

Specifically, as shown in FIG. 17, the rotation direction R of the washing tub 80 at the time of dehydration may be set in a counterclockwise direction, and the protrusion 200 may be configured to be bent at least a portion in a right screw direction. .

In addition, the rotation direction R of the washing tub 80 rotating in the counterclockwise direction based on the developed view of the washing tub 80 illustrated in FIG. 18 may be displayed in a left to right direction. In addition, each protrusion 200 may have a straight line shape inclined in a direction opposite to the rotation direction R of the washing tub 80 on the developed view of the circumference 80c.

In manufacturing the washing tub 80 according to another embodiment of the present invention, the circumferential portion 80c, the plurality of protrusions 200 of the linear shape inclined in a right-to-left direction (C2) to a rectangular metal plate It can be produced by bending a metal plate formed with a plurality of protrusions 200 is formed in a cylindrical shape. Through this, each of the protrusions 200 formed on the inner surface of the washing tub 80 may be configured to be bent in the direction of the right screw at least a portion corresponding to the washing tub 80 to rotate in the counterclockwise direction, each protrusion 200 May be bent in a direction C2 opposite to the rotation direction R of the washing tub 70 rotating in a counterclockwise direction.

In addition, the plurality of protrusions 200 formed on the inner surface of the washing tub 80 are respectively rearward end 80R of the washing tub 80 from the front end 80F of the washing tub 80 in a direction opposite to the rotation direction of the washing tub 80. It may be in the shape of a helix extending toward the helix.

Through this, the plurality of protrusions 200 formed on the inner surface of the washing tub 80 can move the laundry in the washing tub 80 in a direction away from the inlet 11 from the inlet 11 side, the laundry (inlet) It can be prevented from being damaged by being pinched between 11) and the door 12.

In addition, each of the protrusions 200 includes a plurality of depressions formed along the longitudinal direction of the protrusions 200, and the water tank 80 includes a plurality of dehydration holes formed in the inner surface.

Since the plurality of hamball portion and the plurality of dewatering holes formed in each protrusion 200 are similar to the structure of the ball portion 110 and the first to third dewatering holes 121, 122, 123 shown in FIG. Description is omitted.

As such, the washing machine 2 according to another embodiment of the present invention corresponds to the

washing tanks

70 and 80 configured to rotate in a counterclockwise direction when dewatering, and a plurality of washing machines 2 protrude in the inner surfaces of the

washing tanks

70 and 80. At least a portion of the

protrusions

100 and 200 are bent in the right-screw direction (at least a portion of the

protrusions

100 and 200 is bent in the direction C2 opposite to the rotation direction R of the washing tubs 70 and 80). The laundry on the inlet 11 side can be moved away from the inlet 11. Through this, the laundry inside the rotating washing tank (70, 80) can be prevented from being caught between the inlet 11 and the door 12 by being driven to the inlet (11) side.

In addition, the

washing tanks

70 and 80 may include the first and second dehydration holes 121 and 122 formed on the plurality of

protrusions

100 and 200, respectively, and the third dewatering hole 123 formed between the plurality of protrusions 100. By including, it is possible to effectively improve the moisture content.

In the above, various embodiments of the present invention have been described separately, but each embodiment is not necessarily implemented alone, and the configuration and operation of each embodiment may be implemented in combination with at least one other embodiment.

In addition, specific embodiments have been shown and described above. However, the present invention is not limited only to the above embodiments, and those skilled in the art may make various changes without departing from the spirit of the technical idea of the invention as set forth in the claims below.

Claims

main body;

A cylindrical washing tub rotatably provided inside the main body to accommodate laundry;

A plurality of recesses formed on an inner circumferential surface of the washing tub and arranged in a plurality in a circumferential direction of the washing tub to form a pattern; And

And first dewatering holes formed in the recesses,

Each recess is formed in the longitudinal direction of the washing tank.
The method of claim 1,

The recess is formed in a direction parallel to the drive shaft for driving the washing tank.
The method of claim 2,

The pattern includes a first pattern region and a second pattern region spaced apart along the driving shaft direction,

The washing machine further comprises at least one second dehydration hole formed between the first pattern region and the second pattern region.
The method of claim 1,

The depression is recessed from the inner circumferential surface of the washing tank toward the outside of the washing tank, the second inclined surface inclined downward along the circumferential direction of the washing tank and the second inclined upward in the circumferential direction of the washing tank Washing machine including slopes.
The method of claim 4, wherein

The first dewatering hole is formed in the contact portion of the first inclined surface and the second inclined surface.
The method of claim 4, wherein

The recess has a washing machine having a connection surface in which the first inclined surface and the second inclined surface are flat and the first dehydration hole is formed.
The method of claim 6,

The depression includes a guide groove formed in the connection surface,

The first dehydration hole is located in the guide groove,

The guide groove is a washing machine inclined toward the first dewatering hole.
A main body having an inlet formed on the front surface thereof;

A cylindrical washing tank rotatably disposed in the main body and accommodating laundry introduced through the inlet; And

And a plurality of protrusions protruding toward the inside of the washing tub from the inner circumferential surface of the washing tub to form a pattern.

Each of the protrusions is bent in a spiral direction at least a portion in a direction away from the inlet from the side adjacent to the inlet.
The method of claim 8,

The washing tank is configured to rotate counterclockwise upon dehydration,

The at least part of the protrusion is bent in the right screw direction.
The method of claim 9,

The protrusion includes a front end proximate to the inlet, a center part connected to the front end part, and a rear end connected to the center part,

The central portion is bent in the right screw direction,

The front end and the rear end washing machine parallel to the rotation axis of the washing tank.
The method of claim 8,

The protrusion includes a plurality of depressions formed along the longitudinal direction of the protrusion.
The method of claim 11,

The protrusion includes at least one first dewatering hole formed in the depression.
The method of claim 11,

The protrusion includes at least one second dewatering hole formed between the plurality of recesses.
The method of claim 8,

The plurality of protrusions are arranged side by side along the circumferential direction of the washing tank.
The method of claim 14,

The washing tank includes at least one third dewatering hole formed between the plurality of protrusions.