KR20150001592A

KR20150001592A - Dish washing machine and sump assembly thereof

Info

Publication number: KR20150001592A
Application number: KR20130169460A
Authority: KR
Inventors: 유수형; 홍승기; 이제원; 박찬영; 이창욱; 주재만
Original assignee: 삼성전자주식회사
Priority date: 2013-06-27
Filing date: 2013-12-31
Publication date: 2015-01-06

Abstract

Provided is a dish water which is improved to smooth the flow of washing water to a spray unit in a sump assembly. The dish washer according to an embodiment of the present invention includes: a water storage chamber which stores washing water; a sump housing which has a side wall part and a bottom part which form the water storage chamber; a fine filter which is arranged in the upper part of the sump housing and has an opening which connects a washing chamber with the water storage chamber; a course filter of a cylindrical shape which is installed in the opening; and a sump assembly which includes a microfilter installed in the water storage chamber and having a flat shape in order to form a solid waste collecting chamber which collects solid waste with a part of the side wall part of the sump housing and a part of the bottom part of the sump housing.

Description

DISHWASHING MACHINE AND SUMP ASSEMBLY THEREOF [0002]

The present invention relates to a dishwasher provided at a lower portion of a washing tub and having a sump assembly for storing washing water.

The dishwasher includes a sump assembly having a main body provided with a washing tank therein, a basket accommodating the dishware, a spraying unit spraying wash water, a water storage chamber for storing wash water, and a plurality of filters for filtering the dirt, And a washing pump for pumping the washing water into the spray unit.

Generally, the plurality of filters for filtering the dirt are provided at the bottom of the washing tank, and are provided with a fine filter having a relatively medium-sized through-hole, a course filter provided at the opening of the fine filter and having a relatively large through- a coarse filter, and a micro filter provided in the water storage chamber and having a relatively fine-sized through-hole.

Here, the microfilter has a cylindrical shape whose upper and lower surfaces are opened, and is disposed inside the water storage space. The washing water that has passed through the course filter flows into the interior of the microfilter through the opened top surface of the microfilter and the dirt having a larger size than the fine holes formed on the circumferential surface of the microfilter is collected inside the microfilter.

Therefore, the microfilter itself forms a dust collection chamber therein, and a circulation chamber connected to the circulation flow path is formed between the micro filter and the sump housing.

One aspect of the present invention discloses a dishwasher including a sump assembly having a microfilter having a flat shape rather than a cylindrical shape.

One aspect of the present invention discloses a dishwasher including a sump assembly formed by a microfilter, a sidewall portion of a sump housing, and a bottom portion.

One aspect of the present invention discloses an improved dishwasher in which the circulation flow of wash water to the sump unit is smooth in the sump assembly.

One aspect of the present invention discloses a dishwasher in which sealing with a sump of a microfilter is enhanced.

According to an aspect of the present invention, a dishwasher includes: a main body; a washing tub provided inside the main body; a basket provided inside the washing tub to store a tableware; unit; And a sump assembly provided at a lower portion of the washing tank to store wash water, wherein the sump assembly includes: a sump housing having a water storage chamber for storing washing water, a sidewall portion for forming the water storage chamber and a bottom portion; A fine filter provided at an upper portion of the housing and having an opening communicating the cleaning tank and the water storage chamber; a cylindrical course filter mounted on the opening; And a microfilter mounted inside the water storage chamber to form a dirt collecting chamber for collecting dirt together with a part of the side wall of the sump housing and a part of the bottom, and having a flat shape.

The dishwasher further includes a remaining portion of the sidewall portion of the sump housing, a remaining portion of the bottom portion, and a circulation chamber formed by the microfilter and circulating the washing water to the injection unit.

The sidewall portion of the sump housing may have a pair of side fitting grooves through which the micro filter is fitted.

Here, the pair of side fitting grooves may be formed so that the width gradually decreases toward the bottom.

In addition, the bottom of the sump housing may have a bottom fitting groove into which the micro filter is fitted.

In addition, the microfilter includes a filter network for filtering the dirt and a filter frame for supporting the filter network, and the filter network may be formed flat.

Here, the microfilter includes a pair of fitting protrusions protruding from both sides of the filter frame for coupling with the sump housing, and the pair of fitting protrusions may be gradually narrowed downward .

The dishwasher may further include a dirt cover coupled to the sump housing to cover an open upper surface of the dirt collecting chamber.

Here, the dirt cover may be screwed to the sump housing.

The dust cover may include a through hole through which the course filter passes.

The dust cover may include a filter support protruding toward the microfilter to support the microfilter.

In addition, the sump housing may further include a cover supporting portion protruding inward to support the dirt cover.

According to another aspect of the present invention, there is provided a dishwasher including a main body, a washing tub provided inside the main body, a sump housing provided at a lower portion of the washing tub and having a water storage chamber for storing wash water, A fine filter having an opening for communicating the cleaning tank and the water storage chamber; a cylindrical course filter mounted on the opening; And a microfilter mounted on the water storage chamber so as to cross the water storage chamber and having a flat shape.

Here, the microfilter may include a filter network formed to be flat and a filter frame supporting the filter network.

The microfilter may further include a fitting protrusion protruding from the filter frame for coupling with the sump housing.

The sump housing includes a sidewall portion forming the water storage chamber and a bottom portion. A portion of the sidewall portion of the sump housing, a portion of the bottom portion, and the micro filter form a dirt collecting chamber for collecting dirt, The remaining part of the sidewall of the sump housing, the remaining part of the bottom, and the microfilter form a circulation chamber for circulating the wash water in the wash tank.

The dishwasher may further include a dirt cover coupled to the sump housing to cover an open top surface of the dirt collecting chamber.

According to another aspect of the present invention, there is provided a dishwasher comprising: a main body; a washing tank provided inside the main body; a water storage chamber provided at a lower portion of the washing tank for storing washing water; A fine filter having an opening for communicating the washing tank and the water storage chamber, a cylindrical course filter mounted on the opening, and a sump housing having a side wall and a bottom, A dirt collecting chamber formed by a part of a sidewall of the sump housing and a part of a bottom of the sump housing and communicating with the opening; And a circulation chamber formed by the microfilter, the remaining part of the sidewall of the sump housing, and the rest of the bottom, and circulating the wash water in the wash tank.

Here, the circulation chamber may have a dense shape rather than a donut shape.

In addition, the microfilter may have a flat shape.

In addition, the dishwasher may further include a dirt cover that covers an open upper surface of the dirt collecting chamber.

According to another aspect of the present invention, there is provided a dishwasher including a main body; a washing tank provided inside the main body; a water storage chamber provided at a lower portion of the washing tank and storing wash water; And a microfilter provided in the water storage chamber to divide the water storage chamber into a dirt collecting chamber for collecting dirt and a circulation chamber for circulating the wash water in the wash tank and having a non-cylindrical shape .

Here, the micro filter may have a flat shape.

The dishwasher further includes a sump housing having the water storage chamber, a sidewall portion forming the water storage chamber, and a bottom portion. The dirt collecting chamber includes a microfilter, a portion of a sidewall of the sump housing, And the circulation chamber may be formed by the microfilter, the remaining part of the side wall of the sump housing, and the rest of the bottom part.

According to an aspect of the present invention, a sump assembly for a dishwasher includes a sump housing having a water storage chamber for storing washing water, a sidewall portion for forming the water storage chamber, and a bottom portion; a sump housing provided on the sump housing, A fine filter having an opening communicating with the water storage chamber; a cylindrical course filter mounted on the opening; And a microfilter mounted inside the water storage chamber to form a dirt collecting chamber for collecting dirt together with a part of the side wall of the sump housing and a part of the bottom, and having a flat shape.

According to another aspect of the present invention, there is provided a dishwasher including a main body, a washing tub provided in the main body, a spray nozzle for spraying washing water, a sump having a water storage chamber for storing washing water, A microfilter mounted in the chamber and configured to divide the dust storage chamber into a dust collecting chamber for collecting dust and a circulation chamber for circulating washing water through the spray nozzle and having a flat filter portion; And a course filter mounted on the sump so as to pre-filter the dirt contained in the washing water flowing into the dirt collecting chamber and pressing the microfilter downward and sideways so that the sealing of the sump and the microfilter is maintained .

Here, the course filter may be mounted to the sump by being rotated downward from the unlocking position to the locking position after being inserted vertically downward into the sump.

Here, when the course filter is rotated from the unlocked position to the locked position, the course filter moves downward and the microfilter can be pressed downward.

Here, the course filter may include a downward pressing surface that presses the microfilter downward.

Here, the microfilter may include a lower corresponding surface that is pressed by the lower pressing surface.

In addition, the course filter may include a mounting projection having an upwardly inclined surface that is upward in accordance with the rotating direction of the course filter from the releasing position to the locking position.

Here, the sump may include a mounting groove into which the mounting projection is inserted, wherein the mounting groove includes a mounting groove having a downwardly inclined surface that is downwardly contacted with the upward inclined surface in accordance with the rotation direction of the course filter from the releasing position to the locking position have.

The course filter may include a side pressing surface formed by expanding a part of the outer circumferential surface in a radially outward direction so as to press the microfilter laterally at the time of rotation from the release position to the lock position.

Here, the microfilter may include a side facing surface pressed by the side pressing surface.

In addition, the microfilter may have an upper frame, a lower frame, and a frame portion having both side frames, the filter portion being provided to surround the filter portion to support the filter portion.

Here, the lower frame may include a lower sealing groove formed to be sealed to the sump.

Here, the sump may include a lower sealing protrusion inserted into a sealing groove of the lower frame.

Further, the side frame may include a side sealing projection formed to be sealed to the sump.

Here, the sump may include a side sealing groove into which the side projection of the side frame is inserted.

The dishwasher further includes a vane that moves inside the washing tub and reflects the washing water sprayed from the spray nozzle to the dish side and a rail extending rearward from the front of the washing tub to guide the movement of the vane , The course filter may be arranged to be offset to one side wall of both side walls of the washing tub.

Here, a drain hole is formed on the bottom surface of the washing tub, and the dishwasher further includes a fine filter mounted on the drain hole.

According to another aspect of the present invention, there is provided a dishwasher including a main body, a washing tub provided inside the main body and having a drain port formed on a bottom surface thereof, a fixed nozzle fixed to one side of the washing tub, A vane for moving the inside of the washing tub and reflecting the washing water sprayed from the fixing nozzle to the table side; a rail extending from the front to the rear of the washing tub to guide the movement of the vane; A sump having a water storage chamber; a fine filter installed in the water storage chamber; a dust collection chamber for collecting dirt in the water storage chamber and a circulation chamber for circulating wash water through the fixed nozzle; filter; And a course filter mounted on the sump to filter dirt of washing water flowing into the dirt collecting chamber and positioned to be offset to one side wall of both side walls of the washing tub.

In addition, the course filter may press the microfilter downward and laterally so that the sump and the microfilter are sealed.

According to the idea of the present invention, the microfilter, which is disposed in the water storage chamber and forms a dust collecting chamber for collecting dust, has a flat shape which is simpler than a conventional cylindrical shape.

As a result, the molding cost of the microfilter can be reduced.

In addition, cleaning of the microfilter can be facilitated. For example, it is possible to easily clean the microfilter by providing an injection nozzle for spraying filter wash water into the water storage chamber.

The dust collection chamber and the circulation chamber are formed by the micro filter and the sidewall and the bottom of the sump housing, respectively, so that the dust collection chamber and the circulation chamber each have a densely packed shape.

Therefore, the flow of the washing water flowing from the circulation chamber to the circulation channel is smooth, and the design of the size and detailed shape of the dust collection chamber and the circulation chamber can be facilitated.

For example, in the case of a conventional sump assembly having a cylindrical microfilter, since the circulation chamber is formed in a donut shape between the outside of the microfilter and the sump housing, the diameter of the microfilter is increased to increase the size of the dust collection chamber The flow of the washing water in the circulation chamber may be deteriorated.

However, according to the idea of the present invention, since the circulation chamber has a dense shape instead of a donut shape, the flow of the washing water is improved by itself, and the position of the microfilter is slightly changed The flow of the washing water in the circulation chamber may be unchanged even if it is moved to the circulation chamber side.

According to the idea of the present invention, the sealing between the microfilter and the sump is strengthened, so that the dust collecting ability of the dishwasher is improved and the cleaning power is improved.

Further, the course filter is provided so as to be offset toward one side wall of the both side walls, and can be easily mounted and separated without being interfered with the rail guiding the vane.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a schematic structure of a dishwasher according to an embodiment of the present invention; Fig.
2 is a view showing a structure of a lower portion of a washing tank of the dishwasher of FIG. 1;
3 shows the sump assembly of the dishwasher of FIG. 1;
FIG. 4 is an exploded perspective view of the sump assembly of FIG. 1 in an exploded perspective view; FIG.
FIG. 5 is an exploded perspective view of the sump assembly of FIG.
6 is a view showing a state in which a course filter and a fine filter are removed from a sump assembly of the dish washer of FIG. 1;
7 is a cross-sectional view taken along a line I-I in Fig.
8 is a sectional view taken along the line II-II in Fig. 3;
FIG. 9 is a view for explaining a process of collecting dirt in the sump assembly of the dishwasher of FIG. 1; FIG.
10 is a view showing a sump of a dishwasher, a course filter, and a fine filter according to another embodiment of the present invention.
FIG. 11 is a view showing the sump of the dishwasher of FIG. 10, the course filter, the fine filter, and the microfilter disassembled.
12 is a sectional view taken along the line III-III in Fig. 10;
FIG. 13 is an enlarged view of a portion B in FIG. 12; FIG.
14 is a cross-sectional view taken along the line IV-IV in Fig. 10;
Fig. 15 is an enlarged view of a portion C in Fig. 14; Fig.
Fig. 16 is a plan view showing the sump of the dishwasher and the course filter of Fig. 10, showing the locking operation of the course filter; Fig.
Fig. 17 is a side view showing the course filter of the dish washer of Fig. 10; Fig.
FIG. 18 is a view showing the sump and the course filter of the dishwasher of FIG. 10, showing the locking operation of the course filter; FIG.
Fig. 19 is a sectional view showing a sump of a dishwasher, a course filter, and a microfilter of Fig. 10; Fig.
20 is a plan view showing a course filter of the dishwasher of Fig. 10 and a part of the microfilter in an enlarged manner; Fig.
FIG. 21 is a plan view showing a lower portion of the washing tub of the dish washer of FIG. 10; FIG.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

FIG. 1 is a schematic view illustrating a structure of a dishwasher according to an embodiment of the present invention, and FIG. 2 is a view illustrating a structure of a lower portion of a washing tank of the dishwasher of FIG.

1 and 2, a dishwasher 1 according to an embodiment of the present invention includes a main body 10, a washing tank 12 provided inside the main body 10, A spraying unit 21, 22, 23 for spraying washing water to wash the dishes of the basket 17, 18; A circulation pump 43 for pumping the washing water of the sump assembly 100 to the injection units 21, 22, and 23; A circulation flow path 42 for connecting the sump assembly 100 and the spray units 21, 22 and 23; a drain pump 45 for draining the wash water of the sump assembly 100 to the outside of the main body 10; And a drainage flow path 44 connecting the sump assembly 100 and the outside of the main body 10.

The washing tub 12 is provided substantially in the shape of a box having an inner space, and the front surface of the washing tub 12 is opened for inserting and receiving the dishes. The front surface of the opened washing tub 12 can be opened and closed by the door 11. [

The baskets 17, 18 may include an upper basket 17 and a lower basket 18. The washing tub 12 may be provided with an upper rack 15 for supporting the upper basket 17 and a lower rack 16 for supporting the lower basket 18.

The spray units 21, 22, and 23 for spraying the wash water may include an upper first injection unit 21, an intermediate second injection unit 22, and a lower third injection unit 23 .

The first injection unit 21 and the second injection unit 22 may each be a rotor type that injects wash water directly toward the tableware while rotating around a rotation axis.

The third injection unit 23 is fixed to one side of the washing tub 12 so that the washing water can be sprayed in a substantially horizontal direction toward the inclined surface 31 of the reflector assembly 30, The washing water sprayed on the inclined plane 31 can be reflected from the inclined plane 31 to the dish side on the upper side. The reflector assembly 30 has a roller 32 and is capable of linear reciprocating motion along a rail 19 provided on the side wall 14 of the washing tub 12.

To this end, the dishwasher 1 is provided with a driving device for driving the reflector assembly 30. The driving device includes a driving pump 35 for generating a driving force, And a wire 37 connecting the pulley 36 and the reflector assembly 30 to each other.

When the drive pump 35 is driven, the wire 37 is pulled toward the drive pump 35 and the reflector assembly 30 connected to the wire 37 moves toward the injection nozzle 24 side of the third injection unit 23 . When the washing water is sprayed from the spray nozzle 24 while the drive pump 35 is stopped, the reflector assembly 30 can move along the spray direction of the spray nozzle 24 by the water pressure.

In this way, the reflector assembly 30 can be linearly reciprocated. Therefore, the third injection unit 23 can inject the washing water into the inside of the washing tub 12 without any gaps.

However, it is needless to say that the configuration of the driving apparatus of the present embodiment is merely an example, and various known configurations capable of implementing a linear reciprocating motion can be employed.

Further, the dishwasher of the present embodiment is provided with two rotor-type spraying units 21 and 22 and one spraying unit 23 of linear reciprocating type, but is not limited thereto.

The water supply channel (40) connects the inside of the washing tub (12) with an external water supply source. The water supply flow path 40 may be provided with a water supply valve 41 for interrupting supply of water.

The sump assembly 100 is provided at the bottom of the washing tub 12 to store washing water. The bottom surface 13 of the washing tub 12 is inclined toward the sump assembly 100 so that the washing water can be collected on the bottom surface 13 and collected in the sump assembly 100.

The sump assembly 100 includes a sump housing 150, a water storage chamber 151 (Fig. 4) provided inside the sump housing 150, and a plurality of filters for filtering the dirt contained in the wash water. The sump housing 150 may be provided with a circulation port 161 connected to the circulation flow passage 42 and a drain port 162 connected to the drainage flow passage 44.

On the other hand, the plurality of filters includes a coarse filter 110 having a relatively large passage hole, a fine filter 120 having a relatively medium passage hole, a micro filter having a relatively fine passage hole, Filter 130 (Fig. 4, micro filter). Particularly, the micro filter 330 collects dirt and forms a dirt collecting chamber 152 (FIG. 7) for discharging the dirt together with the washing water when draining the washing water.

The specific configuration of the sump assembly 100 will be described in detail below.

3 is a view showing a sump assembly of the dishwasher of FIG. Fig. 4 is an exploded perspective view of the sump assembly of Fig. 1 in an exploded perspective view. FIG. 5 is an exploded perspective view of the sump assembly of the dishwasher of FIG. 1, explaining another angle. FIG. 6 is a view showing a state in which a course filter and a fine filter are removed from a sump assembly of the dish washer of FIG. 1; FIG. 7 is a cross-sectional view taken along a line I-I in FIG. 3, and FIG. 8 is a cross-sectional view taken along a line II-II in FIG.

3 to 8, a sump assembly 100 of a dishwasher according to an embodiment of the present invention includes a sump housing 150 having a water storage chamber 151 for storing washing water, A course filter 110 mounted on the opening 123 of the fine filter 320 and a micro filter 330 provided inside the water storage chamber 151 do.

The sump housing 150 may have a hemispherical shape with an open top surface. The sump housing 150 includes a side wall portion 154 forming a water storage chamber 151 and a bottom portion 155. The water storage chamber 151 is formed in a space surrounded by the side wall portion 154 and the bottom portion 155 of the sump housing 150, and the upper surface thereof is opened.

The sump housing 150 includes a circulation port 151 that communicates with the water storage chamber 151, a drain port 152, a first aiding port 163, and a second aiding port 164. The circulation port 151 is connected to the circulation flow passage, and the drainage port 152 is connected to the drainage flow passage. A turbidity sensor and an air discharge hose may be connected to the first and second auxiliary ports 163 and 164, if necessary.

A pair of side fitting grooves 156 are formed in the side wall portion 154 of the sump housing 150 and the micro filter 330 is fitted to the bottom portion 155 of the sump housing 150, A bottom fitting groove 157 (Fig. 8) is formed.

The microfilter 330 may be removably fitted to the side fitting groove 156 of the sump housing 150 and the bottom fitting groove 157. The micro filter 330 is fitted into the sump housing 150 so that sealing between the micro filter 330 and the sump housing 150 is ensured and the dirt is prevented from being coupled between the micro filter 330 and the sump housing 150. [ Can be prevented from passing through the portion.

On the other hand, the side fitting groove 156 may be formed so that its width becomes gradually narrower downward. Therefore, the micro filter 330 can be easily inserted into the side fitting groove 156.

The microfilter 330 is fitted into the side fitting groove 156 and the bottom fitting groove 157 so that the microfilter 330 is mounted on the sump housing 150. The water storage chamber 151 is connected to the microfilter 330, 7 and Fig. 8) and the circulation chamber 153 (Fig. 7, Fig. 8).

The fine filter 320 includes a fine filter body 121, a fine passage hole 122 formed in the fine filter body 121 and having a relatively intermediate size, a fine filter (not shown) And an opening (123) formed in the body (121). The fine filter body 121 is provided so as to be inclined toward the opening 123.

The course filter 110 has a substantially cylindrical shape. The course filter 110 is mounted on the opening 123 of the fine filter 320 so as to filter the dirt contained in the washing water passing through the opening 123 of the fine filter 320. [ The course filter 110 includes a cylindrical course filter body 111, a course passage hole 112 formed in the course filter body 111 and having a relatively large size, And includes a handle 113 having a handle.

The micro filter 330 has a substantially flat shape. The micro filter 330 is fitted into the sump housing 150 and disposed inside the water storage chamber 151 of the sump housing 150. However, it is preferable that the micro filter 330 has a flat shape as in the present embodiment. Alternatively, the micro filter may not have a flat shape, but is not limited to a non-cylindrical shape.

In one example, the microfilter may be a bended shape or a zigzag shape.

That is, even a microfilter of such bent or zigzag shape can be disposed to cross the water storage chamber so as to be surrounded by the microfilter and the sump housing.

The microfilter 330 includes a filter net 131 having a flat shape and having a relatively finest through hole and a filter frame 132 for supporting the filter net 131.

The filter frame 132 may include an outer frame 133 coupled to an edge of the filter network 131 and an intermediate frame 134 provided at the center of the filter network 131. The lower end 135 of the filter frame 132 may be fitted into the bottom fitting groove 157 of the sump assembly 150.

The microfilter 330 may include a pair of fitting protrusions 136 protruding from the filter frame 132 to be fitted into the side fitting grooves 156 of the sump housing 150. The pair of fitting protrusions 136 may be formed so as to be gradually narrower toward the bottom so as to correspond to the side fitting grooves 156 of the sump housing 150.

The micro filter 330 is inserted into the sump housing 150 in such a manner as to cross the water storage chamber 151 by fitting the fitting projections 136 on both sides into the pair of side fitting grooves 156 of the sump housing 150. [ Respectively.

Accordingly, the water storage chamber 151 is divided into the two chambers 152 and 153 by the micro filter 330. One of the two chambers 152 and 153 is disposed below the opening 123 of the fine filter 320 so that the course filter 110 mounted in the opening 123 is placed in the chamber 152. [ The dust that has passed through the filter is introduced.

The dirt that can not pass through the filter film 131 of the micro filter 330 among the dirt is collected in the chamber 152. Therefore, in this sense, this chamber 152 is referred to as a dirt collecting chamber 152, and the other chamber 153 is referred to as a circulating chamber 153. The waste collection chamber 152 is connected to the drain port 162 and the circulation chamber 153 is connected to the circulation port 161.

On the other hand, the dirt collecting chamber 152 is provided in the space surrounded by the micro filter 330, a part (154a, Figures 7 and 8) of the side wall part of the sump housing and a part (155a, Figures 7 and 8) .

The circulation chamber 153 also includes a microfilter 330 and a space surrounded by the remaining portion 154b (Figures 7 and 8) of the sidewall portion of the sump housing and the remaining portion 155b (Figures 7 and 8) As shown in FIG.

This is because the microfilter 330 is arranged to cross the water storage chamber 150 with a flat shape rather than a cylindrical shape.

On the other hand, the dirt collecting chamber 152 and the circulating chamber 153 each have a densely shaped shape instead of a dispersed shape such as a donut shape. This densified shape has an effect that the flow of washing water can be smooth as compared with a dispersed shape such as a donut shape.

Meanwhile, the dishwasher may further include a dirt cover 140 coupled to an open top surface of the dirt collecting chamber 152 to prevent the dirt collected in the dirt collecting chamber 152 from flowing backward or overflowing.

The dirt cover 140 may be coupled to the sump housing 150 by a screw S. To this end, the dust cover 140 and the sump housing 150 may have screw holes 143 and 158 (FIG. 5), respectively. The sump housing 150 may include a cover supporting portion 159 protruding toward the water storage space 151 so as to support the rim of the dirt cover 140.

The dust cover 140 is provided substantially horizontally and includes a cover portion 141 covering the opened upper surface of the dust collection chamber 152 and a filter support portion 142 projecting from the cover portion 141 to support the micro filter 330 ).

The cover 141 may have a through hole 144 through which the course filter 110 passes. The filter support portion 142 may include a horizontal support portion 142a for supporting the filter frame 132 of the microfilter 330 and a vertical support portion 142b for supporting the filter net 131 of the microfilter 330 have. The vertical support portion 142b may be provided with an insertion groove 142c into which the intermediate frame 134 of the filter frame 132 is inserted.

With such a structure, the dust cover 140 can prevent the dust collected in the dust collection chamber 152 from flowing backward or overflowing, and can support the micro filter 330.

FIG. 9 is a view for explaining the process of collecting dirt in the sump assembly of the dishwasher of FIG. 1;

1 to 9, a description will be given of a dirt collecting process in the sump assembly of the dishwasher of the present invention.

The washing water sprayed from the spraying units 21, 22 and 23 to wash the dishware and fall down to the bottom 13 of the washing tub 12 together with the dirt is filtered by the inclination of the bottom 13 of the washing tub 12, .

The washing water passes over the fine filter 320, passes through the through hole 122 of the fine filter 320, and is stored in the water storage chamber 151.

Part of the dirt passing through the fine filter 320 passes through the through hole 122 of the fine filter 320 and falls into the circulation chamber 153. The remaining part of the dirt passes through the fine filter 320 by the inclination of the fine filter 320 And moves to the course filter 110 side.

The dirt having a large size among the dirt moved to the course filter 110 side can not pass through the through hole 112 of the course filter 110 and is collected outside the course filter 110, (B) through the through hole 112 of the dust collecting chamber 152.

When the circulation pump 43 is operated, the washing water in the water storage chamber 151 is pumped into the injection units 21, 22 and 23. At this time, the part of the water dropped into the circulation chamber 153 through the fine filter 320 The dirt in the dirt collecting chamber 152 can not pass through the most dense microfilter 330 and remains trapped in the dirt collecting chamber 152.

After the circulation pump 43 is operated several times and the tableware is thoroughly cleaned, the drain pump 45 is operated to drain the washing water. When the drain pump 45 is operated, the dirt in the dirt collecting chamber 152 is drained to the outside of the main body 10 together with the washing water.

10 is a view showing a sump of a dishwasher, a course filter, and a fine filter according to another embodiment of the present invention. Fig. 11 is a view showing the sump of the dishwasher of Fig. 10, the course filter, the fine filter, and the microfilter disassembled. 12 is a sectional view taken along the line III-III in Fig. 13 is an enlarged view of a portion B in Fig. 14 is a sectional view taken along the line IV-IV in Fig. 15 is an enlarged view of a portion C in Fig. Fig. 16 is a plan view showing the sump of the dishwasher and the course filter of Fig. 10, showing the locking operation of the course filter. Fig. 17 is a side view showing the course filter of the dish washer of Fig. Fig. 18 is a view showing the sump and the course filter of the dish washer of Fig. 10, showing the locking operation of the course filter. Fig. Fig. 19 is a sectional view showing the sump of the dish washer of Fig. 10, the course filter, and the microfilter. 20 is an enlarged plan view showing a course filter of the dish washer of FIG. 10 and a part of the microfilter. FIG. 21 is a plan view showing the lower part of the washing tub of the dish washer of FIG. 10; FIG.

10 to 12, a sump and filters of a dishwasher according to another embodiment of the present invention will be described.

The dishwasher according to another embodiment of the present invention includes a sump 300 for storing washing water, a circulation pump 251 for circulating washing water of the sump 300 to the spray nozzles, A drain pump 252 for discharging the water to the outside of the main body, and filters 320, 330 and 340 for filtering the dirt contained in the washing water.

The bottom plate 235 of the washing tub is provided with a drain port 250 (Figure 21) for draining the washing water to the sump 300 and the bottom plate 235 of the washing tub is connected to the drain port 250, It may have an inclination toward the side of the base plate 250.

The sump 300 may have a semi-spherical shape with an open top surface. The sump 300 includes a bottom portion 301, a side wall portion 303, a water storage chamber 310 formed in the bottom portion 301 and the side wall portion 303 for storing wash water, and a circulation pump 251 A circulation port 307 to be connected, and a drain port 308 to which a drain pump 252 is connected.

The filters 320, 330 and 340 include a fine filter 320 mounted on a drain port 250 of the bottom plate 235, a coarse filter 340 and a micro filter 330, micro filter).

The course filter 340 may have a substantially cylindrical shape. The course filter 340 may be mounted on the inner surface of the sidewall 303 of the sump 300.

The course filter 340 may have a filter portion 342 for filtering a relatively large size of dirt and a handle 341 for mounting the course filter 340. The filter portion 342 of the course filter 340 may be formed on the circumferential surface of the course filter 340.

The course filter 340 is mounted on the sump 300 through the through hole 339 of the micro filter 330 and the through hole 321 of the fine filter. The upper part of the course filter 340 protrudes into the inside of the washing tub and the lower part protrudes into the dirt collecting chamber 311 of the sump 300. The dust collecting chamber 311 will be described later.

The fine filter 320 may have a filter portion 121 for filtering dirt of a medium or larger size and a through hole 322 through which the course filter 340 passes. The fine filter 320 may be mounted approximately horizontally above the drain port 250 of the bottom plate 235 of the washing tub. The fine filter 320 may have an inclination such that the washing water is guided to the through hole 322 side by its own weight.

The washing water in the washing tank may flow toward the course filter 340 along the inclination of the fine filter 320. However, some of the washing water and dirt may flow to the water storage chamber 310 of the sump 300 through the filter portion 321 of the fine filter 320.

The micro filter 330 includes a filter portion 331 having a flat shape and filtering a dirt of a relatively small size or more, frames 332, 333 and 335 for supporting the filter portion 331, Lt; RTI ID = 0.0 > 339 < / RTI >

The frames 332, 333, and 335 include an upper frame 332, a lower frame 333, and side frames 335. The microfilter 330 is constructed so that the lower frame 333 is in close contact with the bottom portion 301 of the sump 300 and the sidewalls 300 are in contact with the sidewalls 303 of the sump 300, Respectively.

The micro filter 330 can divide the water storage chamber 310 of the sump 300 into a dust collection chamber 311 and a circulation chamber 312. A waste pump 252 is connected to the waste collection chamber 311 and a circulation pump 251 is connected to the circulation chamber 312.

As described above, the course filter 340 is provided so that its lower portion protrudes into the dirt collecting chamber 311, so that the dirt contained in the washing water and the washing water passing through the course filter 340 flows into the dirt collecting chamber 311 do.

The washing water flowing into the dust collecting chamber 311 may flow into the circulating chamber 312 through the microfilter 330. However, since the dirt contained in the washing water flowing into the dirt collecting chamber 311 can not pass through the micro filter 330, the dirt can not flow into the circulating chamber 312 but remains in the dirt collecting chamber 311 as it is.

The dust collected in the dust collecting chamber 311 may be discharged to the outside of the main body together with the washing water when the drain pump 252 is operated.

The microfilter 330 is disposed at the bottom of the sump 300 to prevent dust from the dust collection chamber 311 from flowing into the circulation chamber 312 through the gap between the micro filter 330 and the sump 300 301 and the sidewall portion 303, respectively.

A lower sealing groove 334 may be formed in the lower frame 333 of the micro filter 330 and a side sealing projection 336 may be formed in the side frame 335. [ A lower sealing projection 302 is formed in the bottom portion 301 of the sump 300 to be inserted into the lower sealing groove 334 and a side sealing projection 336 is formed in the side wall portion 303 of the sump 300 Side sealing grooves 304 may be formed.

The sealing of the microfilter 330 and the sump 300 can be strengthened by the projections and grooves of the downward and lateral directions.

Meanwhile, the course filter 340 may be inserted into the sump 300 after being inserted vertically downward into the sump 300, and then rotated from the unlocking position to the locking position.

For this, a mounting protrusion 343 is formed on the outer circumferential surface of the course filter 340. When the course filter 340 rotates from the releasing position to the locking position on the inner side surface of the side wall 303 of the sump 300, A mounting groove 305 may be formed in which the guide groove 343 is inserted in the horizontal direction.

The mounting protrusion 343 may have an upwardly inclined surface 344 that is upward in the direction of rotation from the unlocking position of the course filter 340 to the locked position. The mounting groove 305 may have a downward sloping surface 306 that is downwardly moved in the direction of rotation from the unlocking position of the course filter 340 to the locking position.

With this structure, when the course filter 340 rotates from the unlocking position to the lock position, the upward inclined face 344 of the mounting projection 343 slides on the downward inclined face 306 of the mounting groove 305, 340 can be moved downward.

The course filter 340 can downwardly push the microfilter 330 while moving downwardly as it rotates from the unlock position to the locked position. For this purpose, the course filter 340 may have a downward pressure surface 345 formed horizontally to press the microfilter 330 downward. The microfilter 330 may have a lower corresponding surface 337 formed horizontally so as to be pressed by the lower pressing surface 345.

When the course filter 340 rotates from the unlocking position to the lock position, the microfilter 330 is pressed downward to move the lower frame 333 of the microfilter 330 and the bottom of the sump 300 The sealing of the microfilter 301 can be further strengthened and lifting of the microfilter 330 can be prevented.

Further, the course filter 340 may have a side pressing surface 346 formed by expanding a part of the outer circumferential surface radially outwardly so as to press the microfilter 330 laterally when rotating from the unlocking position to the lock position . That is, the course filter 340 may have an embossed shape or an elliptical shape.

The microfilter 330 may have a lateral facing surface 338 that is laterally urged by the lateral pressure surface 346.

When the course filter 340 rotates from the unlocking position to the locked position, the microfilter 330 is pressed sideways so that the side frame 335 of the microfilter 330 and the sidewalls 303 ) Can be further strengthened.

On the other hand, as shown in Fig. 47, the course filter 340 can be arranged to be offset to one side wall of the both side walls 233 and 234 of the washing tub. That is, the course filter 340 may be arranged closer to the left side wall 233 than the right side wall 234. The course filter 340 can be easily separated without interference with the rail 440 that guides the movement of the reflector 400 when the course filter 340 is separated.

The scope of the present invention is not limited to the specific embodiments described above. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: dishwasher 10: main body
11: Door 12: Washing tank
13: washing tub bottom 14: washing tub side wall
15, 16: upper and lower racks 17, 18: upper and lower basket
19: rails 21, 22, 23: first, second and third injection units
24: Third injection unit nozzle 30: Reflector plate assembly
31: slope surface 32: roller
35: drive pump 36: pulley
37: wire 40: water supply channel
41: Water supply valve 42: Circulating flow path
43: circulation pump 44: drainage channel
45: Drain pump 100: Sump assembly
110: Course filter 111: Course body
112: Course passing ball 113: Handle
120: Fine filter 121: Fine body
122: Pine passing hole 123: An opening
130: Micro filter 131: Filter mesh
132: Filter frame 133: Outer frame
134: intermediate frame 135: filter frame bottom
136: fit projection 140: dirt cover
141: cover part 142: filter support part
142a: frame supporting portion 142b: filter net supporting portion
142c: Intermediate frame inserting groove 143: Screw engaging hole
144: Through hole 150: Sump housing
151: water storage chamber 152: waste collection chamber
153: Circulation chambers 154, 154a, 154b:
155, 155a, 155b: bottom part 156: side fitting groove
157: bottom fitting groove 158: screw fitting hole
159: Cover supporting portion 161: Circulation port
162: Drain port 163,164: Auxiliary port
232: washing tub rear wall 233, 234: left and right side walls of washing tub
235: washing tub bottom plate 250: washing tub drain
400: Vane 440: Rail
251: Circulation pump 252: Drain pump
300: Sump 301:
302: lower sealing projection 303:
304: side sealing groove 305: mounting groove
306: downward slope 307: circulation port
308: Drain port 309: Distributor coupling part
310: water storage chamber 311: waste collection chamber
312: circulation chamber 320: fine filter
321: Filter part 322: Through hole
330: Micro filter 331: Filter part
332: upper frame 333: lower frame
334: Lower sealing groove 335: Side frame
336: Side sealing projection 337: Downward facing surface
338: lateral facing surface 339: through hole
340: course filter 341: handle
342: filter portion 343: mounting projection
344: an upward inclined face 345: a downward pressing face
346: Side pressure side
S: Screw

Claims

main body;
A washing tub provided inside the main body;
A basket provided inside the washing tub to store the dishware;
A spray unit for spraying washing water to wash the dishes of the basket; And
A sump assembly provided at a lower portion of the washing tub to store wash water; Lt; / RTI >
The sump assembly includes:
A sump housing having a water storage chamber for storing washing water, a sidewall portion for forming the water storage chamber, and a bottom portion;
A fine filter provided at an upper portion of the sump housing and having an opening communicating the washing tank and the water storage chamber;
A cylindrical course filter mounted on the opening; And
A micro filter having a flat shape and mounted inside the water storage chamber to form a dirt collecting chamber for collecting dirt together with a part of the side wall part of the sump housing and a part of the bottom part; Wherein the dishwasher comprises:

The method according to claim 1,
Further comprising a remaining part of the sidewall part of the sump housing, a remaining part of the bottom part, and a circulation chamber formed by the microfilter and circulating the wash water in the spray unit.

The method according to claim 1,
Wherein the sidewall portion of the sump housing is formed with a pair of side fitting grooves into which the microfilters are fitted.

The method of claim 3,
Wherein the pair of side fitting grooves are formed to have a gradually narrower width in a downward direction.

The method according to claim 1,
Wherein the bottom of the sump housing is formed with a bottom fitting groove into which the micro filter is fitted.

The method according to claim 1,
Wherein the microfilter includes a filter network for filtering dirt and a filter frame for supporting the filter network,
Wherein the filter net is formed flat.

The method according to claim 6,
Wherein the microfilter includes a pair of fitting protrusions projecting from both sides of the filter frame for engagement with the sump housing,
Wherein the pair of fitting protrusions are formed so that their width gradually decreases toward the bottom.

The method according to claim 1,
Further comprising: a dirt cover coupled to the sump housing to cover an open upper surface of the dirt collecting chamber.

9. The method of claim 8,
Wherein the dirt cover is screwed into the sump housing.

9. The method of claim 8,
Wherein the dust cover includes a through hole through which the course filter passes.

9. The method of claim 8,
Wherein the dust cover includes a filter support portion protruding toward the microfilter so as to support the microfilter.

9. The method of claim 8,
Wherein the sump housing further comprises a cover support portion protruding inward to support the dirt cover.

main body;
A washing tub provided inside the main body;
A sump housing provided at a lower portion of the washing tub and having a water storage chamber for storing wash water;
A fine filter provided to cover the water storage chamber and having an opening communicating the cleaning tank and the water storage chamber;
A cylindrical course filter mounted on the opening; And
A microfilter mounted in the water storage chamber to cross the water storage chamber and having a flat shape; Wherein the dishwasher comprises:

14. The method of claim 13,
Wherein the microfilter comprises a filter net formed to be flat and a filter frame supporting the filter net.

14. The method of claim 13,
Wherein the microfilter further comprises a fitting protrusion protruding from the filter frame for engagement with the sump housing.

14. The method of claim 13,
Wherein the sump housing includes a side wall portion forming the water storage chamber and a bottom portion,
A portion of the sidewall portion of the sump housing, a portion of the bottom portion, and a microfilter to form a dirt collecting chamber for collecting dirt,
The remaining part of the sidewall of the sump housing, the remaining part of the bottom, and the microfilter form a circulation chamber for circulating the wash water in the wash tank.

17. The method of claim 16,
Further comprising: a dirt cover coupled to the sump housing to cover an open upper surface of the dirt collecting chamber.

main body;
A washing tub provided inside the main body;
A sump housing provided at a lower portion of the washing tank, the sump housing having a water storage chamber for storing wash water, a sidewall portion for forming the water storage chamber, and a bottom portion;
A fine filter provided to cover the water storage chamber and having an opening communicating the cleaning tank and the water storage chamber;
A cylindrical course filter mounted on the opening;
A microfilter mounted in the water storage chamber;
A dust collection chamber formed by the microfilter, a part of the side wall of the sump housing, and a part of the bottom, and communicating with the opening; And
A circulation chamber formed by the remaining part of the sidewall of the sump housing and the remaining part of the bottom and circulating the wash water in the wash tank; Wherein the dishwasher comprises:

19. The method of claim 18,
Wherein the circulation chamber has a densified shape rather than a donut shape.

19. The method of claim 18,
Wherein the microfilter has a flat shape.

19. The method of claim 18,
Further comprising: a dirt cover covering the opened upper surface of the dirt collecting chamber.

main body;
A washing tub provided inside the main body;
A water storage chamber provided at a lower portion of the washing tub and storing wash water; And
The microfilter is provided in the water storage chamber to divide the water storage chamber into a dirt collecting chamber for collecting dirt and a circulating chamber for circulating washing water through the washing tank, and has a non-cylindrical shape. Wherein the dishwasher comprises:

23. The method of claim 22,
Wherein the microfilter has a flat shape.

23. The method of claim 22,
Further comprising: a sump housing having the water storage chamber, a side wall portion forming the water storage chamber, and a bottom portion,
Wherein the dust collection chamber is formed by a portion of the sidewall of the sump housing and a portion of the bottom,
Wherein the circulation chamber is formed by the microfilter, the remaining part of the side wall of the sump housing, and the rest of the bottom.

A sump housing having a water storage chamber for storing washing water, a sidewall portion for forming the water storage chamber, and a bottom portion;
A fine filter provided at an upper portion of the sump housing and having an opening communicating the washing tank and the water storage chamber;
A cylindrical course filter mounted on the opening; And
A micro filter having a flat shape and mounted inside the water storage chamber to form a dirt collecting chamber for collecting dirt together with a part of the side wall part of the sump housing and a part of the bottom part; Wherein the sump assembly comprises:

main body;
A washing tub provided inside the main body;
A spray nozzle for spraying wash water;
A sump having a water storage chamber for storing wash water;
A micro filter installed in the water storage chamber to divide the water storage chamber into a dirt collecting chamber for collecting dirt and a circulation chamber for circulating washing water through the injection nozzle and having a flat filter portion; And
A course filter mounted on the sump so as to previously filter dirt contained in washing water flowing into the dirt collecting chamber and pressing the microfilter downward and sideways so that sealing of the sump and the microfilter is maintained; Wherein the dishwasher comprises:

27. The method of claim 26,
Wherein the course filter is mounted on the sump by being rotated downward from a release position to a locked position after being inserted vertically downward into the sump.

28. The method of claim 27,
Wherein the course filter moves downward when the course filter is rotated from the release position to the lock position, thereby pressing the microfilter downward.

29. The method of claim 28,
Wherein the course filter includes a downward pressure surface for pushing the microfilter downward.

30. The method of claim 29,
Wherein the microfilter includes a lower corresponding surface that is pressed by the lower pressing surface.

29. The method of claim 28,
Wherein the course filter includes a mounting protrusion having an upwardly inclined surface upward in accordance with a rotation direction from the releasing position to the locking position of the course filter.

32. The method of claim 31,
Wherein the sump includes a mounting groove into which the mounting projection is inserted and includes a mounting groove having a downward inclined surface that is downwardly contacted with the upward inclined surface in accordance with the rotation direction of the course filter from the releasing position to the locking position, Dishwasher.

28. The method of claim 27,
Wherein the course filter includes a side pressing surface formed by expanding a part of an outer circumferential surface in a radially outward direction so as to press the microfilter sideways when the micro filter is rotated from the release position to the lock position.

34. The method of claim 33,
Wherein the microfilter includes a side facing surface that is pressed by the side pressing surface.

27. The method of claim 26,
Wherein the microfilter includes an upper frame, a lower frame, and a frame portion having both side frames, the filter portion being provided to surround the filter portion to support the filter portion.

26. The method of claim 25,
Wherein the lower frame comprises a lower sealing groove formed to be sealed to the sump.

37. The method of claim 36,
Wherein the sump includes a lower sealing projection inserted into a sealing groove of the lower frame.

26. The method of claim 25,
Wherein the side frame includes a side sealing projection formed to be sealed to the sump.

39. The method of claim 38,
Wherein the sump includes a side sealing groove into which a side projection of the side frame is inserted.

27. The method of claim 26,
A vane for moving the inside of the washing tub and reflecting the washing water sprayed from the spray nozzle to the dish side, and a rail extending rearward from the front of the washing tub to guide the movement of the vane,
Wherein the course filter is disposed to be offset to one side wall of both side walls of the washing tub.

27. The method of claim 26,
A drain port is formed on the bottom surface of the washing tub,
And a fine filter mounted on the drain hole.

main body;
A washing tub provided inside the main body and having a drain port formed on a bottom surface thereof;
A fixed nozzle fixed to one side of the washing tub and spraying wash water;
A vane for moving the inside of the washing tub and reflecting the washing water sprayed from the fixing nozzle to the dish side;
A rail extending rearwardly from the front of the washing tub to guide movement of the vane;
A sump having a water storage chamber for storing wash water;
A fine filter mounted on the drain hole;
A microfilter mounted in the water storage chamber for dividing the water storage chamber into a dirt collecting chamber for collecting dirt and a circulation chamber for circulating washing water through the fixed nozzle; And
A course filter mounted on the sump to filter dirt of washing water flowing into the dirt collecting chamber and positioned to be offset to one side wall of both side walls of the washing tub; Wherein the dishwasher comprises:

43. The method of claim 42,
Wherein the course filter is mounted on the sump by being rotated downward from a release position to a locked position after being inserted vertically downward into the sump.

43. The method of claim 42,
Wherein the course filter presses the microfilter downward and laterally so that sealing of the sump and the microfilter is maintained.