KR102358753B1 - Dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a tub for providing a washing space; a sump formed to recover the washing water sprayed into the tub; a supply pump configured to supply the washing water stored in the sump into the tub; and a first body installed in the sump, having upper and lower sides open and having a plurality of first holes formed along the circumference of the side, and a plurality of second holes disposed radially inside the first body and formed along the circumference of the side A dishwasher comprising a filter device having a second body, wherein the second body includes an outer wall portion having the second hole formed therein and an inner wall portion extending vertically from the radially inner side of the outer wall portion will be.

Description

Dishwasher {DISHWASHER}

The present invention relates to a dishwasher, and more particularly, to a dishwasher having a filter device capable of smoothing the flow of washing water and filtering out foreign substances in the form of sticks.

Dishwasher is a device that washes contaminants such as food residues on dishes or cooking utensils (hereinafter also referred to as 'cleaning objects') using detergent and washing water.

In general, a dishwasher includes a tub that provides a washing space, a rack provided in the tub to receive a washing object, a jet arm that sprays washing water to the rack, a sump that stores washing water, and a sump that supplies washing water stored in the sump to the jet arm. It is common to include a supply pump.

For example, Korean Patent Application Laid-Open No. 10-2011-0045758 (hereinafter also referred to as "conventional dish washing machine") discloses a filter device provided in a dish washing machine.

Such a conventional dishwasher is composed of a first filter having holes of a specific size on the periphery and a second filter on which a mesh member is installed on the periphery.

Therefore, in order for the washing water to be drained, it must pass through the first filter and the second filter, and when foreign substances are accumulated in the first filter and the second filter, the filter may be clogged and may interfere with the flow of the washing water.

Recently, there is a demand for a filter device capable of draining the dirt included in the washing water when draining the washing water without disturbing the flow of the washing water.

However, in the case of a stick-shaped foreign material (eg, a toothpick, etc.), there is a high possibility that it passes through the filter device and flows into the drain passage. In addition, when the stick-type foreign material passes through the filter device, it may block the drain passage and interfere with the drainage of the washing water.

An object of the present invention is to provide a dishwasher having a filter device capable of efficiently filtering out foreign substances of various sizes without interfering with the flow of washing water.

Another object of the present invention is to provide a dishwasher having a filter device capable of efficiently filtering out stick-type foreign substances.

Another object of the present invention is to provide a dishwasher capable of preventing clogging of a drain passage by a stick-type foreign material.

The present invention is to achieve the above object, the tub for providing a washing space; a sump formed to recover the washing water sprayed into the tub; a supply pump configured to supply the washing water stored in the sump into the tub; and a first body installed in the sump, having upper and lower sides open and having a plurality of first holes formed along the circumference of the side, and a plurality of second holes disposed radially inside the first body and formed along the circumference of the side A dishwasher comprising a filter device having a second body, wherein the second body includes an outer wall portion having the second hole formed therein and an inner wall portion extending vertically from the radially inner side of the outer wall portion do.

In this case, the inner wall portion may be formed to extend further downward than the lower end of the outer wall portion.

In addition, a plurality of ribs protruding outward in a radial direction of the inner wall portion may be provided on a side circumference of the inner wall portion.

In addition, the plurality of ribs may be formed to extend from an outer surface of the inner wall portion to an inner surface of the outer wall portion.

For example, each of the plurality of ribs may be formed to block a circumferential flow path of a space formed between the inner wall portion and the outer wall portion.

In addition, each of the plurality of ribs may include an upper rib disposed at a position corresponding to the inner surface of the outer wall portion and a lower rib extending downward from a lower end of the upper rib.

In this case, it is preferable that the protruding width of the lower portion of the rib is larger than the protruding width of the upper portion of the rib.

In addition, the length of the upper portion of the rib and the length of the lower portion of the rib may be formed to be the same.

In addition, the second body is formed in a dome shape, a flat portion is provided at an upper end of the second body, and the plurality of second holes are formed around a side surface of the second body except for the flat portion. can

In addition, the plurality of ribs may be formed to extend over the entire length direction of the inner wall portion.

In addition, the plurality of ribs may be disposed to be spaced apart from each other at a predetermined interval along the periphery of the inner wall portion.

Meanwhile, the first body includes an upper body in which the first hole is formed and a lower body extending downwardly from the upper body, and a mesh member may be provided on a periphery of a side surface of the lower body.

In addition, a connection portion for connecting the first body and the second body may be provided between the outer periphery of the lower end of the second body and the inner periphery of the first body.

The connection part may be formed to prevent the washing water from flowing downward from the space between the upper body and the second body.

Meanwhile, a filter insertion hole may be formed on an upper surface of the sump, an inclined portion inclined toward the filter insertion hole may be provided on the upper surface of the sump, and at least a portion of the filter device may be inserted into the filter insertion hole.

Specifically, a filter installation sheet may be formed around the filter insertion hole, and when the filter device is installed in the filter insertion hole, an upper portion of the filter device may be exposed over the filter installation sheet.

More specifically, the upper body and the second body may be exposed over the filter installation sheet.

On the other hand, it is preferable that the shape of the first hole and the shape of the second hole are different from each other.

For example, the area of the first hole is preferably larger than the area of the second hole.

In addition, the first body and the second body may be integrally formed through injection molding.

On the other hand, the dishwasher according to an embodiment of the present invention is provided in the tub, one or more racks formed to accommodate the object to be washed; And it may further include one or more spray arms formed to spray the washing water supplied by the supply pump toward the rack.

According to the present invention, it is possible to provide a dishwasher having a filter device capable of efficiently filtering out foreign substances of various sizes without interfering with the flow of washing water.

In addition, according to the present invention, it is possible to provide a dishwasher having a filter device capable of efficiently filtering out stick-type foreign substances.

In addition, according to the present invention, it is possible to provide a dishwasher capable of preventing clogging of a drain passage by a stick-type foreign material.

1 shows a dishwasher according to an embodiment of the present invention.
FIG. 2 is a perspective view of a filter device provided in the dishwasher shown in FIG. 1 .
FIG. 3 is a perspective view in which a part of the filter device of FIG. 2 is visible.
4 is a perspective view of the filter device of FIG. 2 viewed from below.
5 is a cross-sectional view of the filter device of FIG.
6 is a diagram schematically illustrating a state in which the filter device of FIG. 2 is coupled to a sump.
FIG. 7 is a view showing the principle of filtering stick-shaped foreign substances by the filter device of FIG. 2 .

Hereinafter, a cold water supply apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings show exemplary forms of the present invention, which are only provided to explain the present invention in detail, and the technical scope of the present invention is not limited thereby.

In addition, regardless of the reference numerals, the same or corresponding components are given the same reference numerals and redundant description thereof will be omitted, and for convenience of description, the size and shape of each component shown may be exaggerated or reduced. have.

1 shows a dishwasher according to an embodiment of the present invention.

Referring to FIG. 1 , a dishwasher 100 according to an embodiment of the present invention includes a cabinet 1 , a tub 11 providing a washing space, and one or more racks 191 and 193 providing a space in which an object to be washed is accommodated. ), one or more jet arms (3, 5) for spraying washing water, a sump (13) providing a space for storing washing water, and a supply supplying washing water stored in the sump (13) to the jet arms (3, 5) It includes a pump (8), and a filter device (2) installed in the sump.

The cabinet 1 forms the exterior of the dishwasher 100 . Also, a door 16 formed to open and close the tub 11 may be provided in the cabinet 1 .

The tub 11 may be provided in the cabinet 1 and may be formed to provide a space for cleaning an object to be cleaned. Also, the tub 11 may be provided on the sump 13 .

The one or more racks 191 and 193 may include a first rack 191 and a second rack 193 positioned under the first rack 191 . In this case, the first rack 191 and the second rack 193 may be represented as an upper rack and a lower rack.

The upper rack 191 and the lower rack 193 may be provided to be withdrawn from the cabinet 1 when the door 16 opens the tub 11 .

That is, a rail (not shown) guiding the movement of the racks 191 and 193 toward the door 16 is provided on the inner circumferential surface of the tub 11 , and the racks are supported by the rail (not shown). A roller (not shown) may be further provided.

The one or more spray arms (3, 5) are provided inside the tub (11), the lower arm (5) for washing the object to be washed stored in the second rack (193), the washing housed in the first rack (191) It may include an upper arm (3) for washing the object.

The lower arm 5 and the upper arm 3 may receive washing water through the supply pump 8 and the supply passage 7 . The supply passage 7 selectively connects the first supply passage 71 connected to the lower arm 5 , the second supply passage 73 connected to the upper arm 3 , and each of the supply passages 71 and 73 . It may include a switching valve 75 to open.

When the lower arm 5 is rotatably provided inside the tub 11 , the lower arm 5 is rotatably coupled to the holder 17 provided in the cover 15 , and the first supply passage 71 may be provided to supply washing water to the holder 17 .

Meanwhile, if the upper arm 3 is rotatably provided inside the tub 11 , the upper arm 3 may be rotatably coupled to the end of the second supply passage 73 .

The sump 13 may be formed to recover the washing water sprayed into the tub 11 . In addition, the sump 13 may be formed to store the recovered washing water.

In addition, the sump 13 includes a storage unit 133 for storing washing water, a cover 15 positioned above the storage unit to separate the tub 11 from the storage unit 133 , and the storage unit 133 . may include a side portion 131 for connecting to the cover 15 , and a bottom surface 132 constituting the lower end of the sump 13 . In this case, the cover 15 may form the upper surface of the sump 13 .

The storage unit 133 may be formed to receive washing water through a water supply passage 135 connected to a water supply source (not shown). That is, the sump 13 may be formed to receive washing water through a water supply passage 135 connected to a water supply source.

The supply pump 8 may be configured to supply the washing water stored in the sump 13 into the tub 11 . Specifically, the supply pump 8 may be configured to inject the washing water stored in the sump 13 into the tub 11 through the spray arms 3 and 5 .

Specifically, the supply pump 8 includes a housing 81 provided with an impeller 85 , an inlet 84 through which washing water is introduced into the housing 81 , and an outlet through which washing water inside the housing 181 is discharged. (82), a motor 87 provided outside the housing 181 to rotate the impeller 186 may be included.

The inlet 84 may be connected to the storage unit 133 through an inlet connecting pipe 97 , and the outlet 82 may be connected to the switching valve 75 through an outlet connecting pipe 99 .

Therefore, when electric power is supplied to the motor 87 and the impeller 85 rotates, the water flowing into the housing 81 from the sump 13 moves to the selector valve 75 through the outlet 82, and the selector valve The water supplied to (75) may be supplied to the upper arm (3) or the lower arm (5) along the supply passages (71, 73) opened by the switching valve (75).

The filter device 2 may be installed on the sump 13 to filter out foreign substances contained in the washing water. For example, when the washing water sprayed into the tub 11 is recovered into the sump 13 , the washing water may include foreign substances separated from the object to be washed.

In this case, the filter device 2 may be formed to filter out foreign substances from the washing water recovered into the sump 13 .

On the other hand, the structure of the filter device 2 may affect the flow and drainage efficiency of the washing water.

Hereinafter, the filter device 2 according to an embodiment of the present invention will be described in detail with reference to other drawings.

FIG. 2 is a perspective view of a filter device provided in the dishwasher shown in FIG. 1 , FIG. 3 is a perspective view of the filter device of FIG. 2 cut away so that the inside of the filter device is visible, and FIG. 4 is a perspective view of the filter device of FIG. 2 from below. This is a perspective view, and FIG. 5 is a cross-sectional view of the filter device of FIG. 2 .

2 to 5 , the filter device 2 provided in the dishwasher 100 according to an embodiment of the present invention includes a first body 21 having upper and lower sides open and the first body 21 . A second body 22 disposed on the radially inner side of the may be provided. An upper end of the second body 22 may be lower than an upper end of the first body 21 . In addition, the first body 21 and the second body 22 may be integrally formed through injection molding.

Specifically, a plurality of first holes 215 may be formed in the first body 21 along the periphery of the side surface. For example, the first body 21 may be formed in a hollow cylindrical shape, and a plurality of first holes 215 may be provided along a periphery of a side surface of the first body 21 .

The plurality of first holes 215 may be formed to have a horizontal length greater than a vertical height. In the illustrated embodiment, the plurality of first holes 215 may be spaced apart from each other at a preset interval and disposed along the periphery of the side surface of the first body 21 .

In addition, a plurality of second holes 225 may be formed along the side circumference of the second body 22 as well. Accordingly, by the first hole 215 formed in the first body 21 and the second hole 225 formed in the second body 22, foreign substances can be filtered through two steps.

Also, the first hole 215 and the second hole 225 may be disposed to be spaced apart from each other in a radial direction. That is, the surface on which the first hole 215 is formed on the first body 21 and the surface on which the second hole 225 is formed on the second body 22 may be disposed to be spaced apart from each other in a radial direction. .

In this case, the shape of the first hole 215 and the shape of the second hole 225 may be different from each other. Accordingly, different types of foreign substances can be filtered by the first hole 215 formed in the first body 21 and the second hole 225 formed in the second body 22 .

For example, the first hole 215 may be formed to be larger than the second hole 225 . That is, the area of the first hole 215 may be larger than the area of the second hole 225 . Accordingly, a relatively large foreign material may be filtered out of the first hole 215 , and a relatively small foreign material may be filtered out of the second hole 225 .

As another example, the width (ie, length) of the first hole 215 may be greater than the height. In addition, the second hole 225 may be formed to have the same height and width. Even in this case, the area of the first hole 215 may be larger than the area of the second hole 225 .

In addition, the second body 22 may be formed in a dome shape, and a flat portion 226 may be provided at an upper end of the second body 22 . In this case, the plurality of second holes 225 may be formed around the side surface of the second body 22 excluding the flat part 226 .

Accordingly, foreign substances (especially, stick-shaped foreign substances) falling toward the upper surface of the second body 22 from above the second body 22 (that is, toward the flat portion 226) are transferred to the second body 22 can be prevented from entering the inside of the

Meanwhile, the second body 22 may include an outer wall portion 221 and an inner wall portion 222 . Specifically, the second body 22 may include an outer wall portion 221 in which the second hole 225 is formed and an inner wall portion 222 extending vertically from the radially inner side of the outer wall portion 221 . can

In this case, the inner wall portion 222 may extend in the vertical direction so that the upper end of the inner wall portion 222 is in contact with the upper surface of the outer wall portion 221 . In addition, the outer surface of the inner wall portion 222 and the inner surface of the outer wall portion 221 may be formed to be spaced apart from each other at a predetermined interval. In addition, the inner wall portion 222 may be formed in a hollow cylindrical shape.

Accordingly, stick-shaped foreign substances introduced through the first hole 215 and the second hole 225 may be filtered by the inner wall portion 222 .

In addition, the inner wall portion 222 may be formed to extend further downward than the lower end of the outer wall portion 221 .

For example, the lower end of the inner wall part 222 may be positioned lower than the lower end of the outer wall part 221 , and positioned higher than the lower end of the first body 21 .

Accordingly, even stick-shaped foreign substances introduced obliquely through the first hole 215 and the second hole 225 may be filtered out by the inner wall portion 222 .

In addition, a plurality of ribs 223 protruding outward in a radial direction of the inner wall portion 222 may be provided around the side surface of the inner wall portion 222 .

For example, the plurality of ribs 223 may be disposed to be spaced apart from each other at a predetermined interval along the periphery of the side surface of the inner wall portion 222 .

The plurality of ribs 223 may be formed to extend from an outer surface of the inner wall portion 222 to an inner surface of the outer wall portion 221 .

Accordingly, stick-shaped foreign substances introduced along the circumferential direction of the inner wall portion 222 through the first hole 215 and the second hole 225 may be filtered by the plurality of ribs 223 . .

Furthermore, each of the plurality of ribs 223 may be formed to block the circumferential flow path of the space S formed between the inner wall portion 222 and the outer wall portion 221 .

That is, since the inner wall portion 222 is disposed radially inwardly from the outer wall portion 221 , there is a space S through which the washing water flows between the inner wall portion 222 and the outer wall portion 221 . can be formed (see FIGS. 4 and 5 ).

At this time, each of the plurality of ribs 223 prevents the washing water and foreign substances from flowing in the space S between the inner wall portion 222 and the outer wall portion 221 along the outer circumferential direction of the outer wall portion 221 . can be prevented

In other words, all of the plurality of ribs 223 block the outer wall portion ( 221) may extend to the inner surface.

Accordingly, even stick-shaped foreign substances introduced in any direction through the plurality of first holes 215 and the plurality of second holes 225 can be filtered by the inner wall portion 222 and the plurality of ribs 223 . have.

Of course, the washing water may flow downward of the filter device 2 through the first hole 215 , the second hole 225 and the space S.

Meanwhile, each of the plurality of ribs 223 is formed from an upper rib disposed at a position corresponding to the inner surface of the outer wall portion 221 , and a lower end of the rib upper portion 223 - 1 and the rib upper portion 223 - 1 . A rib lower portion 223 - 2 extending downward may be provided.

Of course, the upper rib 223-1 and the lower rib 223-2 may be integrally formed.

In this case, it is preferable that the protruding width of the lower rib 223-2 is larger than the protruding width of the upper rib 223-1. That is, it is preferable that the protruding height of the lower rib 223-2 is greater than the protruding height of the upper rib 223-1.

In other words, the protruding width of the rib upper portion 223 - 1 may be limited by the radial width of the outer wall portion 221 . And, since the lower rib 223-2 is located below the lower end of the outer wall portion 221 , the protruding width of the lower rib 223-2 is determined by the radial width of the outer wall portion 221 . not limited

In addition, the length (ie, the longitudinal length) of the upper rib 223-1 and the length (ie, the vertical length) of the lower rib 223-2 may be formed to be the same. That is, the lower rib 223 - 2 may extend further downward by the length of the upper rib 223 - 1 than the lower end of the outer wall 221 .

In addition, the plurality of ribs 223 may be formed to extend over the entire length direction of the inner wall portion 222 .

Accordingly, foreign substances in the form of sticks that are introduced in the direction away from and downward from the inner wall portion 222 through the first hole 215 and the second hole 225 are transferred to the inner wall portion 222 and the lower part of the rib ( 223-2) can be effectively filtered.

Meanwhile, referring to FIG. 2 , the first body 21 may include an upper body 21-1 and a lower body 21-2 extending downward from the upper body 21-1.

The above-described first hole 215 may be formed in the upper body 21-1. In addition, the lower body 21-2 may extend downward from the lower end of the upper body 21-1. In this case, the upper body 21-1 and the lower body 21-2 may be integrally formed.

In addition, a mesh member 219 may be provided around the side surface of the lower body 21-2. Accordingly, fine foreign substances passing through the first hole 215 and the second hole 225 may be filtered by the mesh member 219 .

In addition, between the outer periphery of the lower end of the second body 22 and the inner periphery of the first body 21, a connection part C for connecting the first body 21 and the second body 22 is provided. may be provided (see FIG. 3 ).

In this case, the connection part (C) may be formed to prevent the washing water from flowing from the space between the upper body (21-1) and the second body (22) to the lower side of the connection part (C).

Meanwhile, an installation part 227 protruding radially outward of the first body 21 may be provided at a position corresponding to the connection part C in the first body 21 . That is, the installation part 227 extending along the circumferential direction of the first body 21 may be provided under the first hole 215 in the first body 21 .

Hereinafter, a configuration in which the filter device 2 is coupled to the sump 13 through the installation part 227 will be described with reference to other drawings.

6 is a diagram schematically illustrating a state in which the filter device of FIG. 2 is coupled to a sump.

1 and 6 together, a filter insertion hole 155 may be formed on the upper surface of the sump 13 . That is, the filter insertion hole 155 may be formed in the cover 15 forming the upper surface of the sump 13 . The upper surface of the sump 13 and the cover 15 may represent the same portion. Accordingly, the filter device 2 may be detachably installed in the insertion hole 155 .

Specifically, an inclined portion 151 inclined toward the filter insertion hole 155 may be provided on the upper surface of the sump 13 . Also, at least a portion of the filter device 2 may be inserted into the filter insertion hole 155 .

Accordingly, the washing water and foreign substances falling on the upper surface of the sump 13 may be guided toward the filter device 2 along the inclined portion 151 .

More specifically, a filter installation sheet 152 may be formed around the filter insertion hole 155 . That is, the filter installation sheet 152 may be provided at an end of the inclined portion 151 facing the filter insertion hole 155 .

Also, when the filter device 2 is installed in the filter insertion hole 155 , an upper portion of the filter device 2 may be exposed above the filter installation sheet 152 . For example, the upper end of the filter device 2 may be exposed above the upper surface of the sump 13 .

Specifically, the installation part 227 protruding outward in the radial direction of the first body 21 may be seated on the filter installation sheet 152 . In this case, the above-described upper body 21-1 and the second body 22 may be exposed above the filter installation sheet 152 .

Accordingly, the washing water falling onto the upper surface of the sump 13 passes through the first hole 215 formed in the upper body 21-1 and the second hole 225 formed in the second body 22 of the filter device. (2) It can flow inward.

In addition, foreign substances falling on the upper surface of the sump 13 are primarily filtered through the first hole 215 formed in the upper body 21-1, and the second hole formed in the second body 22 ( 225) can be secondarily filtered.

Meanwhile, a drain hole D for draining the washing water stored in the sump 13 and foreign substances contained in the filter device 2 may be formed in the bottom surface 132 of the sump 13 .

Specifically, the lower end of the filter device 2 may be opened. In addition, the lower end of the filter device 2 may be formed to communicate with the drain hole (D).

That is, when the filter device 2 is installed in the sump 13 , the lower end of the filter device 2 is coupled to the bottom surface 132 of the sump 13 and communicates with the drain hole D can be arranged to do so.

In addition, a drain line 137 may be connected to the drain hole D, and a drain pump 139 may be provided in the drain line 137 .

Hereinafter, the configuration in which the washing water in the sump 13 is supplied back to the inside of the tub 11 after passing through the filter device 2 (that is, the circulation of washing water) and the washing water in the sump 13 and the filter device 2 A configuration in which foreign substances are drained (that is, washing water and drainage of foreign substances) will be described.

First, for circulation of the washing water, the supply pump 8 may be driven and the operation of the drain pump 139 may be stopped. That is, in order to circulate the washing water, only the supply pump 8 should be driven among the supply pump 8 and the drain pump 139 .

When the supply pump 8 is driven, the washing water that has fallen to the upper surface of the sump 13 may flow through the filter device 2 along the arrow A direction shown in FIG. 6 . At this time, the fine foreign matter contained in the washing water may be filtered by the mesh member 219 provided in the filter device (2).

That is, minute foreign substances contained in the washing water flowing along the arrow A direction shown in FIG. 6 may be filtered by the mesh member 219 around the side surface of the lower body 21-2.

In addition, the washing water from which fine foreign substances are filtered may be supplied back into the tub 11 through the pump 8 shown in FIG. 1 .

Meanwhile, in order to drain the washing water and foreign substances, the drain pump 130 may be driven and the driving of the supply pump 8 may be stopped. That is, only the drain pump 139 of the supply pump 8 and the drain pump 139 needs to be driven in order to drain the washing water and foreign substances.

When the drain pump 139 is driven, foreign substances filtered by the mesh member 219 of the filter device 2 may be discharged to the outside through the drain line 137 together with the washing water in the sump 13 .

That is, the fine foreign matter filtered by the mesh member 219 of the filter device 2 may flow along with the washing water along the arrow B direction shown in FIG. 6 . In addition, washing water and fine foreign substances may be discharged to the outside by driving the drain pump 139 .

At this time, as described above, since the elongated stick-shaped foreign matter is filtered out by the filter device 2 , it is possible to prevent the drain line 137 from being blocked or the inlet of the drain pump 139 from being blocked.

Hereinafter, with reference to other drawings, the principle of filtering the stick-shaped foreign matter by the filter device (2) will be described.

FIG. 7 is a view showing the principle of filtering stick-shaped foreign substances by the filter device of FIG. 2 .

Referring to FIG. 7 , at least a portion of the stick-shaped foreign material ST having an elongated shape is introduced into the filter device 2 through the first hole 215 and the second hole 225 formed in the filter device 2 . can be brought in

And, if there is no cylindrical inner wall portion 222 and the plurality of ribs 223 , the stick-shaped foreign material ST enters the first body 21 through the first hole 215 and the second hole 225 . can be imported. That is, the stick-shaped foreign material ST may be introduced into the lower body 21 - 2 of the first body 21 through the first hole 215 and the second hole 225 .

The stick-shaped foreign material ST introduced into the lower body 21-2 may block the inlet of the drain line 137 or the drain pump 139 shown in FIG. 1, thereby causing poor flow of washing water or poor drainage. .

However, according to the present invention, the stick-shaped foreign material ST by the cylindrical inner wall portion 222 provided in the second body 2 and the plurality of ribs 223 formed along the circumferential direction of the inner wall portion 222 . This can be filtered out.

Accordingly, poor flow and poor drainage of washing water due to the stick-shaped foreign material ST can be prevented by the inner wall portion 222 and the plurality of ribs 223 formed along the circumferential direction of the inner wall portion 222 .

In particular, according to the present invention, as the problem that the inlet of the drain line 137 or the drain pump 139 shown in FIG. 1 is blocked by the stick-shaped foreign material ST is solved, the washing water can be drained smoothly. have.

Although the preferred embodiment of the present invention has been described in detail as described above, those of ordinary skill in the art to which the present invention pertains, without departing from the spirit and scope of the present invention as defined in the appended claims The present invention may be practiced with various modifications. Accordingly, modifications of future embodiments of the present invention will not depart from the teachings of the present invention.

1: Cabinet 2: Filter unit 11: Tub
13: sump 21: first body 21-1: upper body
21-2: lower body 22: second body 15: cover
137: drain line 139: drain pump 151: inclined portion
152: filter installation sheet 155: installer 215: first hole
219: mesh member 221: outer wall portion 222: inner wall portion
223: rib 223-1: upper rib 223-2: lower rib
225: second hole 226: flat part 227: installation part
C: Connection ST: Stick-shaped foreign object

Claims (18)

a tub providing a washing space;
a sump formed to recover the washing water sprayed into the tub;
a supply pump configured to supply the washing water stored in the sump into the tub; and
A first body installed in the sump, having upper and lower sides open and having a plurality of first holes formed along the circumference of the side, and a second body disposed radially inside the first body and having a plurality of second holes along the circumference of the side Including a filter device having two bodies,
The second body includes an outer wall portion in which the second hole is formed and an inner wall portion extending vertically from the radially inner side of the outer wall portion,
The inner wall portion is formed to extend further downward than the lower end of the outer wall portion, and a plurality of ribs protruding radially outwardly of the inner wall portion are provided on a side circumference of the inner wall portion. delete According to claim 1,
The plurality of ribs are formed to extend from an outer surface of the inner wall portion to an inner surface of the outer wall portion. 4. The method of claim 3,
Each of the plurality of ribs is formed to block a circumferential flow path of a space formed between the inner wall portion and the outer wall portion. 4. The method of claim 3,
Each of the plurality of ribs has a rib upper portion disposed at a position corresponding to the inner surface of the outer wall portion and a rib lower portion extending downward from a lower end of the rib upper portion,
The dishwasher, characterized in that the protruding width of the lower portion of the rib is larger than the protruding width of the upper portion of the rib. 4. The method of claim 3,
Each of the plurality of ribs has a rib upper portion disposed at a position corresponding to the inner surface of the outer wall portion and a rib lower portion extending downward from a lower end of the rib upper portion,
The dishwasher, characterized in that the length of the upper part of the rib and the length of the lower part of the rib are the same. According to claim 1,
The second body is formed in a dome shape, and a flat part is provided at an upper end of the second body,
The plurality of second holes are formed around side surfaces of the second body except for the flat part. According to claim 1,
The plurality of ribs are formed to extend over the entire length direction of the inner wall portion. According to claim 1,
The plurality of ribs are arranged to be spaced apart from each other at a predetermined interval along a side circumference of the inner wall portion. According to claim 1,
The first body includes an upper body in which the first hole is formed and a lower body extending downward from the upper body,
A dishwasher, characterized in that the mesh member is provided on the side circumference of the lower body. 11. The method of claim 10,
A connection portion for connecting the first body and the second body is provided between the outer periphery of the lower end of the second body and the inner periphery of the first body,
The connection part is formed to prevent the washing water from flowing from a space between the upper body and the second body to a lower side of the connection part. 11. The method of claim 10,
A filter insertion hole is formed in the upper surface of the sump,
An inclined portion inclined toward the filter insertion hole is provided on the upper surface of the sump,
At least a portion of the filter device is inserted into the filter insertion hole. 13. The method of claim 12,
A filter installation sheet is formed around the filter insertion hole,
The dishwasher, characterized in that when the filter device is installed in the filter insertion hole, an upper portion of the filter device is exposed above the filter installation sheet. 14. The method of claim 13,
The dishwasher characterized in that the upper body and the second body are exposed above the filter installation sheet. According to claim 1,
The shape of the first hole and the shape of the second hole are different from each other. 16. The method of claim 15,
An area of the first hole is larger than an area of the second hole. According to claim 1,
The dishwasher, characterized in that the first body and the second body are integrally formed through injection molding. According to claim 1,
one or more racks provided inside the tub and configured to accommodate a cleaning object; and
The dishwasher according to claim 1, further comprising one or more spray arms configured to spray the washing water supplied by the supply pump toward the rack.

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