KR20100037459A - Washing machine - Google Patents

Abstract

PURPOSE: A dish washer is provided to improve the filtering performance by increasing the contact area between washing water and the mesh units. CONSTITUTION: A dish washer includes a sump and a filter(50). The sump temporarily stores washing water discharged from a washing tub. The rotary filter is installed in the sump and rotates filtering the washing water in the sump. The filter is installed in the sump and includes a plurality of mesh units(51,52) arranged at regular intervals in the flow direction of washing water. The mesh units have mesh holes of different sizes.

Description

Dishwasher {Washing machine}

The present invention relates to a dishwasher, and more particularly, to a dishwasher, in which the filtering area is increased and the filtering performance can be improved.

In general, a dishwasher is a device that cleans contaminants such as food waste on dishware or cooking utensils (hereinafter, referred to as `` dishware '') by using detergent and washing water.

The dishwasher includes a main body including a washing tank, a door for opening and closing the opening of the main body, a sump disposed under the washing tank for storing the washing water, a washing pump for pumping the washing water stored in the sump, and the washing pump. Injecting the pumped washing water in the washing tank comprises a spray arm.

In addition, the sump is equipped with a filter for filtering the foreign matter from the wash water containing the foreign matter. The performance of the filter may vary depending on the size of the filter.

However, since the dishwasher according to the related art has a limited space in which the filter can be installed in the sump, there is a problem in that the size of the filter is increased to improve the filtering performance.

It is an object of the present invention to provide a dishwasher equipped with a filter having improved filtering performance.

The dishwasher according to the present invention includes a filter having a sump in which washing water from a washing tank is temporarily stored, and a plurality of mesh portions disposed in the sump, disposed in the sump, and disposed at predetermined intervals in a direction in which the washing water flows. .

In the present invention, the plurality of mesh portions are formed differently in size of each mesh hole.

In the present invention, the plurality of mesh portions are each formed in a cylindrical shape with the same height in the vertical direction, and are arranged to be spaced apart at predetermined intervals in the radial direction.

In the present invention, the plurality of mesh portions are formed to have a smaller size of the mesh hole toward the radial direction.

In the present invention, the upper and lower surfaces of the plurality of mesh portions are formed to be opened, respectively, and the filter further includes a frame portion integrally connecting the upper and lower ends of the plurality of mesh portions.

In the present invention, the dishwasher further comprises a washing pump disposed in the lateral direction of the filter, the washing pump filtered by the filter to pump through the side of the filter.

In the present invention, at least one of the plurality of mesh portions may be formed to be multiple bent.

In the present invention, at least one of the plurality of mesh portions may be embossed.

Since the dishwasher according to the present invention is provided with a filter having a plurality of mesh portions, the filtering area of the washing water is increased, and the filtering performance can be improved because the dish washing machine is filtered a plurality of times. In addition, since the filter is made of an integral structure including the first and second mesh parts, the filter is simple in structure, easy to mount, and does not require design change of an existing mounting unit.

In addition, when at least one of the plurality of mesh portions is formed to be bent in a wave shape, the area in which the wash water and the mesh portion contact each other is increased, and thus the filtering performance may be further improved.

In addition, when at least one of the plurality of mesh portions is formed by embossing, the area in which the wash water and the mesh portion contact each other is increased, and thus the filtering performance may be further improved.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a longitudinal sectional view schematically showing a dish washing machine according to a first embodiment of the present invention, FIG. 2 is a perspective view of a sump with an open sump cover shown in FIG. 1, and FIG. 3 is a filter shown in FIG. 2. 4 is a longitudinal cross-sectional view of the filter shown in FIG. 3.

Referring to FIG. 1, the dishwasher according to the first embodiment of the present invention includes a main body 2 having an opening through which washing products such as dishes are introduced, and a door 6 installed to open and close the opening.

The inner surface of the door 6 is provided with a blower assembly (not shown) for blowing the humid air inside the outside when the dishes are dried. In addition, any one of the main body 2 and the door 6 is provided with a detergent supply device (not shown) for temporarily storing the detergent and supplying it into the washing tank 4.

The main body 2 includes a washing tank 4 forming a space for washing the dishes, a rack assembly disposed inside the washing tank 4 to accommodate the dishes, and a bottom surface of the washing tank 4. And a sump 40 in which washing water is collected, and nozzles 8, 9 and 10 for spraying the washing water of the sump 40 into the washing tank 4.

The rack assembly is installed to be withdrawn from the washing tank (4). The rack assembly may be provided with a plurality, wherein the upper rack 20 and the lower rack 30 is composed of.

The nozzles 8, 9, and 10 are disposed above the sump 40, and are provided from the lower nozzle 8, which sprays the washing water to the lower portion of the washing tank 4, and supplied from the sump (not shown). An upper nozzle 9 for spraying the washing water to the upper portion of the washing tank 4, and a top nozzle 10 for spraying the washing water downward from the upper side of the washing tank (4).

The sump 40 is connected to the water guide 11 for guiding the washing water to the upper side of the washing tank (4). The upper nozzle 9 and the top nozzle 10 are connected to the water guide 11 to receive the washing water from the sump 40.

The sump 40 is formed to have an upper surface open, and a sump cover 41 is disposed to cover the opened upper surface.

1 and 2, the sump 40 includes a washing pump 42 that pumps the washing water in the sump 40, and guides the pumped washing water to the nozzles 8, 9, and 10. A housing assembly 44 forming a flow path, a filter 50 for filtering the washing water introduced from the washing tank 4 into the sump 40, and a lower portion of the filter 50 in communication with the lower portion of the filter 50. A drain pump 60 for discharging the dirt filtered at 50 and the washing water in the sump 40 to the outside is installed.

In addition, a heater (not shown) may be installed in the sump 40 to warm the washing water in the sump 40.

In addition, the sump 40 is provided with a dirt chamber 62 in which dirt filtered by the filter 50 is stored and in communication with the drain pump 60. The dirt chamber 62 may be formed on the bottom surface of the sump 40.

The washing pump 42 includes a washing motor (not shown) for generating a driving force, and an impeller (not shown) axially coupled to the washing motor (not shown).

The housing assembly 44 is disposed above the wash pump 42. The housing assembly 44 communicates with a pump chamber (not shown) in which an impeller (not shown) of the washing pump 42 is disposed, and a flow path control valve (not shown) is disposed therein. In addition, a flow passage is formed inside the housing assembly 44 to guide the washing water to the upper nozzle 9 and the lower nozzle 8, respectively. The upper nozzle 9 or the top nozzle 10 connected to the water nozzle 11 and a lower nozzle connecting portion 44a for guiding the washing water to the lower nozzle 8 above the housing assembly 44. Water guide connection portion 44b for guiding the washing water is formed.

The sump cover 41 is formed to be inclined toward the filter 50 so that the washing water and dirt separated from the sump cover 41 can easily flow to the filter 50.

The sump 40 is provided with a filter seating groove 40a to seat the filter 50.

The filter 50 is formed so that the upper and lower surfaces are respectively opened. The upper surface of the filter 50 serves as an inlet through which the washing water from the washing tank 4 is introduced.

The lower surface of the filter 50 is disposed in the dirt chamber 62, and serves as a drain hole through which the washing water is drained during the operation of the drain pump 60.

Side of the filter 50 is composed of a mesh unit 51, 52, the washing water introduced through the upper surface of the filter 50 during the operation of the washing pump 42, the mesh unit 51, 52 After filtering through, it is circulated through the housing assembly 44 to the washing tank (4).

The filter 50 includes a plurality of mesh portions 51 and 52 having a cylindrical shape, and a frame portion integrally connecting upper and lower ends of the plurality of mesh portions 51 and 52. Hereinafter, the plurality of mesh portions 51 and 52 will be described as being composed of two mesh portions.

The plurality of mesh portions 51 and 52 may include a first mesh portion 51 and a second mesh portion 52 disposed radially spaced apart from the first mesh portion 51 in a radial direction. That is, the second mesh unit 52 is disposed outside the first mesh unit 51.

The first mesh part 51 and the second mesh part 52 are each formed in a cylindrical shape, and the heights of the up and down directions are formed to be the same.

Sizes of the mesh holes of the first mesh part 51 and the second mesh part 52 are different from each other. That is, the size of the mesh hole of the second mesh part 52 is smaller than that of the mesh hole of the first mesh part 51.

The frame part includes an upper frame part 53 connecting an upper end of the first mesh part 51 and an upper end of the second mesh part 52, a lower end of the first mesh part 51, and the second mesh. It consists of a lower frame portion 54 connecting the lower end of the portion 52, and a vertical frame portion 55 connecting the upper frame portion 53 and the lower frame portion 54.

The upper frame part 53 is formed in a ring shape so as to be coupled to an upper end of the first ring part 53a having a ring shape and coupled to an upper end of the first mesh part 51 and the second mesh part 52. And a second ring portion 53b and an upper connection portion 53c connecting the first ring portion 53a and the second ring portion 53b. Fitting grooves are formed in the first ring part 53a and the second ring part 53b, respectively, and upper ends of the first mesh part 51 and the second mesh part 52 may be fitted to each other. The upper connecting portion 53c may be formed to be spaced apart from a plurality of predetermined intervals.

The lower frame portion 54 is formed in a ring shape to be coupled to a lower end of the second ring portion 54a and a third ring portion 54a formed in a ring shape so as to be coupled to the lower end of the first mesh portion 51. And a fourth ring portion 54b and a lower connection portion 54c connecting the third ring portion 54a and the fourth ring portion 54b. Insertion grooves are formed in the third ring portion 54a and the fourth ring portion 54b, respectively, and lower ends of the first mesh portion 51 and the second mesh portion 52 may be fitted to each other. The lower connection portion 54c may be formed to be spaced apart from a plurality of predetermined distances.

The vertical frame part 55 may be vertically formed to connect the first ring part 53a and the third ring part 54a. The vertical frame part 55 also serves to support the first mesh part 51.

Referring to the operation of the dishwasher according to the first embodiment of the present invention configured as described above are as follows.

During the washing stroke of the dishwasher, when the washing pump 42 is operated, the washing water in the sump 40 passes through the housing assembly 44 to the upper nozzle 9, the lower nozzle 8, and the top nozzle ( 10).

The washing water sprayed by the upper nozzle 9 and the lower nozzle 8 washes the dishes and then falls to the sump cover 41. Washing water and dirt dropped on the sump cover 41 are introduced into the filter 50.

The washing water including the dirt introduced into the filter 50 is filtered through the side of the filter 50, and then goes to the washing pump 42.

That is, relatively large dirt is filtered while the washing water flowing into the filter 50 passes through the first mesh unit 51. The dirt filtered out of the first mesh part 51 is collected in the dirt chamber 62 while falling to the inner lower part of the first mesh part 51.

The washing water exiting the first mesh unit 51 passes through the second mesh unit 52, and the small dirt remaining without being filtered out of the first mesh unit 51 is filtered out. The dirt filtered by the second mesh part 52 is collected in the dirt chamber 62 by falling down inside the second mesh part 52.

The washing water filtered by the filter 50 is sprayed through the housing assembly 44 to the upper nozzle 9 and the lower nozzle 8 in accordance with the operation of the washing pump 42.

The dirt filtered by the filter 50 is collected in the dirt chamber 62 and then drained to the outside during the drainage stroke. That is, when the washing pump 42 is stopped during the drain stroke and the drain pump 60 is operated, the washing water in the sump 40 is discharged by the suction force of the drain pump 60. Flows into. Washing water and dirt collected in the waste chamber 62 is discharged to the outside through the drain hose.

Therefore, in the filter 50 according to the present embodiment, since the washing water passes through the first mesh part 51 and the second mesh part 52 in order, the area in which the washing water is filtered is increased.

In addition, since the wash water is filtered twice, the filtering performance of the wash water can be improved.

In addition, since the filter 50 has an integral structure, the structure is simple and easy to mount.

On the other hand, Figure 5 is a perspective view of the filter of the dishwasher according to a second embodiment of the present invention, Figure 6 is a plan view showing the top surface of the filter shown in FIG.

5 and 6, the filter 80 of the dish washing machine according to the second embodiment of the present invention includes a plurality of mesh portions, and at least one of the plurality of mesh portions is configured to be multi-bent. And since the operation can be carried out in the same manner as in the first embodiment of the present invention described above, the overlapping description with the first embodiment of the present invention can be omitted.

The filter 80 may be formed to be spaced apart from the first mesh portion 81 and the first mesh portion 81 by a predetermined distance in a radial direction, and formed to have a smaller size than the mesh hole of the first mesh portion 81. Two meshes 82, and the upper and lower frame portions connecting the upper and lower ends of the first mesh portion 81 and the second mesh portion 82, respectively.

The first mesh portion 81 is bent in a wave shape in the circumferential direction.

The upper frame portion 83 includes an upper wave portion 83a coupled to an upper end of the first mesh portion 81, an upper ring portion 83b coupled to an upper end of the second mesh portion 82, and the And an upper connecting portion 83c connecting the upper wave portion 83a and the upper ring portion 83b. The upper wave portion 83a is bent in a wave shape to correspond to the upper end of the first mesh portion 81.

The lower frame portion 84 includes a lower wave portion (not shown) coupled to the lower end of the first mesh portion 81, a lower ring portion 84b coupled to the lower end of the second mesh portion 82, and And a lower connection part (not shown) connecting the lower wave part and the lower ring part 84b. The lower wave portion is bent in a wave shape to correspond to the lower end of the first mesh portion 82.

Therefore, in the filter according to the second embodiment, since the first mesh portion 81 is formed in a wave shape, the area in which the wash water and the first mesh portion 81 are in contact with each other may be increased, thereby increasing the filtering area. have.

In addition, the second mesh portion 82 is formed in a cylindrical shape, it is not required to change the design of the existing filter mounting groove, it is easy to install, no interference with the peripheral portion.

In addition, since the first mesh portion and the second mesh portion are arranged to be spaced apart by a predetermined interval, the washing water is filtered twice, and thus the filtering performance may be improved.

7 is a perspective view illustrating a filter of a dish washing machine according to a third embodiment of the present invention.

Referring to FIG. 7, the filter 90 of the dish washing machine according to the third embodiment of the present invention includes a plurality of mesh portions, and at least one of the plurality of mesh portions is configured and functions other than those embossed. Since the same as the first embodiment of the present invention can be implemented similarly, the description of the overlapping with the first embodiment of the present invention can be omitted.

The filter 90 may be formed to be spaced apart from the first mesh portion 91 and the first mesh portion 91 by a predetermined distance in a radial direction, and formed to have a smaller size than the mesh hole of the first mesh portion 91. The upper and lower frame portions 93 and 94 connect the two mesh portions 92 and the upper and lower ends of the first mesh portion 91 and the second mesh portion 92, respectively.

The first mesh portion 91 is embossed to be convex, and the area where the washing water and the first mesh portion 91 are increased may increase the filtering area.

1 is a longitudinal sectional view schematically showing a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the sump in which the sump cover shown in FIG. 1 is opened.

3 is a perspective view of the filter shown in FIG. 2.

4 is a longitudinal cross-sectional view of the filter shown in FIG. 3.

5 is a perspective view illustrating a filter of a dish washing machine according to a second embodiment of the present invention.

FIG. 6 is a plan view illustrating the top surface of the filter illustrated in FIG. 5.

7 is a perspective view illustrating a filter of a dish washing machine according to a third embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

2: body 4: washing tank

40: sump 50: filter

51: first mesh portion 52: second mesh portion

53: upper frame portion 54: lower frame portion

Claims (8)

A sump in which washing water from the washing tank is temporarily stored; And a filter disposed in the sump and having a plurality of mesh portions spaced apart from each other by a predetermined interval in a direction in which the washing water flows. The method according to claim 1, The plurality of mesh portion dishwasher formed with a different size of each mesh hole. The method according to claim 1, The plurality of mesh portions each made of a cylindrical shape having the same height in the vertical direction, arranged in a radial interval spaced apart. The method according to claim 3, The plurality of mesh portion dishwasher formed in the radial direction toward the smaller the size of the mesh hole. The method according to claim 1, The plurality of mesh portions are formed so that the upper and lower surfaces are open, respectively, The filter further comprises a frame unit for integrally connecting the upper and lower ends of the plurality of mesh units. The method according to claim 1, The dishwasher, And a washing pump disposed laterally of the filter to pump the washing water filtered by the filter through the side of the filter. The method according to claim 1, At least one of the plurality of mesh unit is formed in a multiple bent dish washer. The method according to claim 1, At least one of the plurality of mesh portion is embossed dishwasher.

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