KR100713300B1 - A filth gathering structure of a dish washer - Google Patents

Abstract

The present invention relates to a dish washer, and more particularly, to a dirt collecting structure of a dish washer capable of collecting dust contained in the washing water effectively.

The waste collection structure of the dish washing machine according to the present invention comprises: a lower nozzle having a waste discharge nozzle for discharging waste water from the introduced washing water; And a sump coupled to the lower nozzle and having at least one dirt inlet formed on the upper surface of the waste discharged from the waste discharge nozzle.

 According to the present invention, the dirt flowing into the lower nozzle can be separated by the dirt guide, and thus, the dirt collection performance is improved, and even if the dirt is stuck in the filter network of the washing filter and the filter network is clogged, the washing water flows back through the inlet By doing so, there is an effect that the washing water is prevented from draining.

Dirt inlet, dirt guide

Description

A filth gathering structure of a dish washer}

1 is a perspective view showing an appearance configuration of a dish washer according to the present invention.

Figure 2 is a perspective view showing the appearance of the sump according to the present invention.

3 is an exploded perspective view of the sump;

4 is a perspective view showing a midnight filter according to the present invention;

5 is a perspective view showing a sump cover according to the present invention.

6 is a perspective view of the flow path guide according to the present invention.

7 is a perspective view of a pump lower according to the present invention.

8 is a cross-sectional view taken along line II ′ of FIG. 1.

<Explanation of symbols for the main parts of the drawings>

160: lower nozzle 162: dirt discharge nozzle 163: filter cleaning nozzle

164: dirt guide 200: sump 210: nozzle holder

220: midnight filter 229: dirt inlet 230: sump cover

240: Euro guide 270: pump lower 290: sump case

The present invention relates to a dish washer, and more particularly, to a dirt collecting structure of a dish washer capable of collecting dust contained in the washing water effectively.

In general, the dishwasher is a home appliance for cleaning the food residue on the surface of the dish by the high-pressure washing water sprayed from the spray nozzle. In detail, the dishwasher includes a tub in which a washing tank is formed and a sump mounted on the bottom of the tub to store washing water. Then, the washing water is moved to the spray nozzle by the pumping action of the washing pump mounted inside the sump, and the washing water moved to the spray nozzle is sprayed at high pressure through the spray hole formed at the dispensing nozzle end. In addition, the washing water sprayed at a high pressure hits the surface of the tableware, and dirt, such as food residues on the tableware, falls to the bottom of the tub.

In addition, the conventional dishwasher is equipped with a midnight filter to filter the dirt on the upper surface of the sump and at the same time to filter foreign matter contained in the wash water flowing back to the tub in the sump. In addition, a plurality of recovery holes are formed in the sump to recover the washing water jetted from the injection nozzle.

In addition, injection holes are formed on upper and lower surfaces of the lower nozzle mounted at the center of the sump, so that the midnight filter is washed by the water pressure of the washing water sprayed downward of the lower nozzle.

However, in the process of filtering the dirt by the midnight filter, a small volume of dirt flows into the sump through the recovery hole, and is again sprayed through the spray nozzle, so that the clean water is sprayed on the tableware. Will occur.

In addition, when dirt is fixed on the upper and lower surfaces of the midnight filter, the filter network of the midnight filter may be clogged even when the midnight filter is washed by the lower nozzle. Furthermore, if the wash water flowing back to the midnight filter does not flow back into the tub, a problem arises in that the wash water is naturally drained even though the drain pump does not operate even if the drain pump does not operate.

The present invention has been proposed to solve the above problems, and an object of the present invention is to propose a waste collection structure of the dishwasher, in which wastewater flowing into the lower nozzle is separable.

In addition, an object of the present invention is to propose a waste collection structure of a dish washing machine in which the washing water is prevented from draining even when the filter network of the midnight filter is blocked.

The waste collection structure of the dish washing machine according to the present invention for achieving the object as described above is a lower nozzle is formed a waste discharge nozzle for discharging the dirt in the washing water introduced; And a sump coupled to the lower nozzle and having at least one dirt inlet formed on the upper surface thereof to allow the waste discharged from the waste discharge nozzle to flow therein.

According to another aspect of the present invention, a soil collecting structure of the dish washing machine includes a lower nozzle; A lower nozzle holder connected to the lower nozzle; A midnight filter on which the lower nozzle holder is seated, a washing filter provided in a circumferential direction, and at least one dirt inlet through which dirt discharged from the lower nozzle is introduced; A sump cover on which the midnight filter is seated; A flow path guide coupled to the lower side of the sump cover by heat fusion and guiding the flow of the washing water; A pump lower including a dirt chamber in which the flow path guide is seated on an inner upper part, and a dirt chamber in which dirt introduced through the dirt inlet is accumulated; And a sump case in which the pump lower is seated on the upper side, and the wash water is stored.

By the dirt collection structure of the dish washing machine according to the present invention, the dirt flowing into the lower nozzle can be separated by the dirt guide, thereby improving the dirt collection performance.

In addition, even if dirt is stuck to the filter net of the washing filter and the filter net is clogged, the washing water can be flowed back through the dirt inlet, thereby preventing the washing water from being drained.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

1 is a perspective view showing an appearance configuration of a dish washing machine according to the present invention.

Referring to FIG. 1, the dishwasher 100 according to the present invention includes a case 101 forming an appearance and opening the front, and a door 102 sealing the opened front of the case 101. Tub 110 is disposed inside the case 101 to form a washing tank, and the sump 200 is formed in the center of the bottom surface of the tub 110 to store the washing water.

In addition, a washing pump 400 connected to the sump 200 and pumping the washing water stored in the sump 200 at high pressure and a washing motor 410 driving the washing pump 400 are included.

In addition, the water guide 140 and the upper portion of the sump 200, which is a path for the washing water pumped from the washing pump 400, the lower portion formed on the bottom of the washing tank to spray the washing water upwards The nozzle 160, the upper nozzle 150 is attached to the upper portion of the water guide 140, extending in the vertical direction from the water guide 140 and positioned in the center of the washing tank, the tub 110 It is formed on the ceiling of the) includes a top nozzle (not shown) for spraying the washing water vertically downward.

In addition, the upper rack 120 is mounted on the upper side of the upper nozzle 150 so that the dishes are washed by the upper nozzle 150, and the lower nozzle 160 so that the dishes are washed by the lower nozzle 160. Lower rack 130 is mounted to the upper side of the) is included.

In detail, the upper rack 120 is supported by the rail 108 provided on the inner surface of the tub 110, and performs the front and rear movement.

And, the door 102 is coupled to the tub 110 by a hinge (not shown) at the lower end of the door 102, it is possible to rotate in the vertical direction about the hinge by the user's operation.

In addition, an exhaust fan 104 may be formed at a predetermined position of the door 102 to allow the internal air of the tub 110 to be forcibly discharged to the outside by the exhaust fan 104.

In addition, a detergent box 106 is formed on the inner surface of the door 102 by a predetermined amount of detergent, and a rinse box 108 is formed at one side of the detergent box 106 to supply a rinse during washing. .

Hereinafter will be described the operation of the dishwasher 100 according to the present invention.

First, the user opens the door 102 of the dishwasher 100 and pulls the upper rack 120 and / or the lower rack 130 out of the washing tank. In addition, dishes are stored in the racks 120 and 130. Then, close the door 102 and apply power to the dishwasher to operate.

On the other hand, when power is applied to the dishwasher 100 and a washing step is performed, washing water flows into the sump 200, and when the washing water inflow step is completed, the washing motor 410 operates. In addition, by rotating the impeller (see 250 of FIG. 3) provided in the washing pump 400 axially connected to the washing motor 410, the washing water is pumped to the lower nozzle 160 and the water guide 140. do.

In addition, the washing water pumped to the water guide 140 is finally moved to the top nozzle and the upper nozzle 150 is injected into the washing tank. In addition, the dishes stored in the racks 120 and 130 are washed by the sprayed washing water.

Here, the top nozzle sprays the washing water vertically downward, and the upper nozzle 150 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 120.

In addition, the lower nozzle 160 sprays the washing water vertically upward, thereby washing the dishes stored in the lower rack 130. In addition, by forming an injection hole in the bottom surface of the upper nozzle 150, the washing water is sprayed in both the up and down directions, it can be configured to simultaneously wash the upper side of the dishes accommodated in the lower rack (130).

In addition, when the washing step is completed, the dirty washing water collected in the sump 200 is discharged to the outside of the dishwasher 100 through the drain pump 350.

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 200 again through an inlet, and sprayed through the spray nozzles 150 and 160 in the same manner as the washing step. The dishware is rinsed by the sprayed clean water. Then, after the rinsing step is completed, the washing operation is completed by going through the drying step.

Figure 2 is a perspective view showing the appearance of the sump according to the present invention, Figure 3 is an exploded perspective view of the sump.

2 and 3, the sump 200 according to the present invention is located at the bottom of the sump case 290, the washing water is stored therein, and the sump cover for covering the upper surface of the sump case (290) ( 230, a midnight filter 220 seated on the upper side of the sump cover 230 by a predetermined height, and a lower nozzle holder seated at the center of the midnight filter 220 and connected to the lower nozzle 160. 210, a washing motor 410 mounted on the bottom of the sump case 290 and generating a rotational force, and a drain pump 350 mounted on the side of the sump case 290 to discharge washing water to the outside; Drainage motor 340 is included.

In addition, the sump 200 is mounted on the inner bottom surface of the sump case 290 is connected to the heater 200 for heating the wash water, and the motor shaft 411 of the washing motor 410 is connected to the motor shaft 411 Pump lower 270 including a disposer 280 for grinding food waste while rotating together with a dust chamber (see 273 in FIG. 7) which is seated on an upper surface of the sump case 290 and collects food waste. ), A washing pump formed between the sump cover 230 and the pump lower 270, and a pump formed between the pump lower 270 and the passage guide 240 to pump the washing water. 400 and a screen filter mounted between the pump lower 170 and the disposer 280 to prevent food waste, which is ground by the disposer 280, from entering the washing pump 400. 279).

In detail, the screen filter 279 is a filter for forming a plurality of small holes to catch food waste, and is attached to the bottom of the pump lower 270.

The washing pump 400 is seated at the center of the pump lower 270, and the washing water rising by the impeller 250 and the impeller 250 are connected to the motor shaft 411 to rotate. It consists of a pump case 271. In addition, a flow path is formed on the upper surface of the flow path guide 240 to guide the washing water pumped by the cleaning pump 290 to the upper nozzle 150 or the lower nozzle 160. The flow path will be described later with reference to the drawings.

In addition, the sump 200 is mounted on one side of the sump case 290 so as to alternately move the washing water pumped from the washing pump 400 to the upper nozzle 150 or the lower nozzle 160 ( 310 and a turbidity sensor 320 mounted at a straight distance from the variuo valve 310 to measure the degree of contamination of the washing water collected in the sump 200 during the washing process. In addition, the pump seal 260 is inserted into the groove formed in the upper surface of the pump lower 270, and further includes a pump sealing 260 to prevent the washing water leaks to the edge of the washing pump 400 and the vario valve 310 do.

Hereinafter, the operation of the sump 200 having the above configuration will be described.

First, when the washing process starts, the washing water is introduced into the sump case 290 from the water supply device, and the impeller 250 is rotated by the operation of the washing motor 410. In addition, when the impeller 250 rotates, the washing water flows into the pump case 271, and the washing water flowing into the pump case 271 is moved to the vario valve 310. In addition, the washing water moved to the vario valve 310 is moved to the water guide 140 or the lower nozzle holder 210 along the flow path moved on the upper surface of the flow path guide 240. In addition, the washing water moved to the water guide 140 or the lower nozzle holder 210 is sprayed into the tub 110 through the upper nozzle 150 and the top nozzle or the lower nozzle 160. Then, the dirt on the tableware is washed off by the injection pressure of the washing water. In addition, the washing water sprayed into the tub 110 falls to the bottom surface of the tub 110. Then, the dropped washing water is stored back into the sump case (290).

On the other hand, a portion of the washing water moving from the washing pump 400 to the variuo valve 310 is branched and moved to the turbidity sensor 320. Then, the contaminated wash water in which turbidity is detected while passing through the turbidity sensor 320 is moved to the drain pump 350, and the wash water moved to the drain pump 350 is dished out by the operation of the drain motor 340. Drained out of the washer.

4 is a perspective view showing a midnight filter according to the present invention.

Referring to FIG. 4, the self-cleaning filter 220 according to the present invention is mounted on the upper side of the sump cover 230 at all times, and has undergone turbidity detection while passing through the turbidity sensor 320. When the back flow toward the bottom surface of the tub 110 from the sump 200, the foreign material is filtered to function.

In detail, the midnight filter 220 is disposed under the upper frame 221 and the upper frame 221 to filter out foreign substances, and the lower filter filter 228 is placed below the cleaning filter 228. A lower frame 222 is included to keep the cleaning filter 228 taut. In addition, the upper frame 221 and the lower frame 122 are integrated by heat fusion.

In addition, the upper frame 221 and the lower frame 222 has the same shape, is formed inside the outer edge of the leakage collection chamber cover 224 to cover the upper portion of the leakage collection chamber 232b to be described later, and A nozzle holder seating portion 226 is included in the leak collecting chamber cover 224 to recess the nozzle holder 210. In addition, a nozzle holder insertion hole 227 is formed in the nozzle holder seat 226 to insert a predetermined portion of the nozzle holder 210.

In addition, the cleaning filter 228 is attached in an annular band between the leak collection chamber cover 224 and the outer rim.

The washing filter 228 extends in a radial direction from an outer circumferential surface of the leak collecting chamber cover 224 and is partitioned into a predetermined size by a frame bridge 225 connecting an outer edge of the midnight filter 220. . Here, the frame bridge 225 functions to keep the cleaning filter 228 taut.

In addition, the midnight filter 220 has a dirt inlet 229 having a predetermined size to allow the dirt discharged from the lower nozzle 160 to be introduced. In addition, a plurality of the dirt inlets 229 are formed along the circumferential direction of the midnight filter 220 in order to easily introduce the dirt, and is formed larger than the size of the filter net of the washing filter 288. Here, the dirt introduced through the dirt inlet 229 is accumulated in the dirt chamber (see 273 in FIG. 7) through the washing water backflow hole (see 239a in FIG. 5), which will be described later.

In addition, the foreign matter is fixed to the cleaning filter 228 in the process of flowing back through the turbidity sensor 320 to the bottom surface of the tub 110 inside the sump 200. Although the wash water does not flow back through the wash filter 228, the wash water flows back through the dirt inlet 229. Accordingly, as the washing water is allowed to flow back through the dirt inlet 229, the foreign matter is fixed to the washing filter 228, so that the pressure of the washing pump 400 acts toward the drainage as the washing filter 228 is blocked. Therefore, the phenomenon of drainage of the washing water is prevented.

In addition, the self-cleaning filter 220 includes a sump cover fastening hole 223 through which a fastening member to be coupled to the sump cover 230 passes through at least one position. In addition, a sump case fastening hole 223a through which a fastening member penetrates is further formed at an outer edge of the midnight filter 220 to be coupled to the sump case 290 separately from the sump cover fastening hole 223. .

On the other hand, the outer edge of the midnight filter 220 extends a predetermined length downward, the midnight filter 220 is coupled stepwise with the upper surface of the sump cover 130. That is, the upper surface of the cleaning filter 228 and the sump cover 230 forms a predetermined height difference. This is to prevent the mesh filter 228 with the sump cover 230 from being immersed in the wash water when the wash water is stored in the sump. In other words, it is to prevent the foreign matter attached to the cleaning filter 228 is not removed because the washing water sprayed from the lower nozzle 160 does not contact the cleaning filter 228.

5 is a perspective view showing a sump cover according to the present invention.

Referring to FIG. 5, the sump cover 230 according to the present invention covers the upper surface of the sump case 290 as described above.

In detail, the sump cover 230 is arranged near the edge, and the plurality of recovery holes 231 for collecting the washing water sprayed from the injection nozzle to the sump, and surrounded by a predetermined height inside the recovery hole 231 A process of moving to the lower nozzle holder 210 by surrounding the filter support sleeve 232 to allow the midnight filter 220 to be seated, and a predetermined height spaced inwardly from the filter support sleeve 232. Leakage collection sleeve (232a) that traps the wash water leaking from the. In detail, a leak collecting chamber 232b is formed inside the leak collecting sleeve 232a to store the leaked washing water.

In addition, the sump cover 230 has a nozzle holder support rib 235 coupled to the lower nozzle holder 210 at a central portion thereof, and a washing water outlet formed at a predetermined diameter inside the nozzle holder support rib 235. 235a). In addition, at least one nozzle holder fastening boss 236 for coupling the lower nozzle holder 210 is formed inside the leak collecting chamber 232b. In addition, a water drain hole 238 is formed near the edge of the leak collecting chamber 232b to allow the wash water collected in the leak collecting chamber 232b to fall into the sump case 190.

In addition, between the filter support sleeve 232 and the leak collecting sleeve 232a, the washing water flowing back from the drain pump 350 flows back into the tub through the midnight filter 220. The part is formed, and the other part is formed with a foreign matter collection membrane 239 for collecting the wash water flowing back through the wash water backflow hole 239a. And a midnight filter fastening boss for projecting the inner peripheral surface of the filter support sleeve 232, the outer peripheral surface of the leak collecting sleeve 232a, and the foreign matter collecting film 239 to a predetermined height so that the midnight filter 220 is coupled. At least one 237 is formed.

In addition, a water guide connecting portion 234 for mounting the lower end of the water guide 140 is protruded in a cylindrical shape on one side of the edge of the sump cover 230. In addition, a fastening member through hole 237a through which a fastening member inserted into a sump cover fastening boss 297a to be described later is formed at a side of the water guide connection part 234. In addition, the outer circumferential surface of the sump cover 230 may include a sump case seating rib 233 bent downward a predetermined length and at least one foreign material missing hole 233a in which a part of the sump case seating rib 233 is cut to a predetermined width. ) Is formed. In detail, the foreign substance missing hole 233a is formed so that food waste flowing into a portion where the bottom surface of the tub 110 and the sump cover 230 come into contact with each other is easily introduced into the sump case 290.

By the sump cover 230 having the configuration described above, the washing water falling into the tub 110 flows into the sump case 290 through the recovery hole 231 and the foreign substance missing hole 233a. do. In addition, the washing water flowed back from the drain pump 350 is flowed back to the bottom surface of the tub 110 through the washing water backflow hole 239a, and then again through the recovery hole 231 and the foreign matter removing hole 233a. It is introduced into the sump case 290. In addition, the washing water pumped by the washing pump 400 is moved to the lower nozzle 160 or the upper nozzle 150 through the washing water outlet 235 or the water guide connecting portion 234.

In addition, the washing water leaked into a gap between the nozzle holder support rib 235 and the lower nozzle holder 210 while the washing water is moved to the lower nozzle 160 is collected in the leak collecting chamber 232b. In addition, the collected washing water is introduced into the sump case 290 through the water draining hole 238.

In addition, a portion of the washing water flowing back through the washing water backflow hole 239a is accumulated on the foreign matter collecting membrane 239, and when the draining process is started, the draining pump 350 through the washing water backflow hole 239a. Is moved to.

6 is a perspective view of a flow guide according to the present invention.

Referring to FIG. 6, the flow path guide 240 according to the present invention is mounted on the bottom surface of the sump cover 230.

In detail, the flow path guide 240 is formed with a flow path through which the washing water pumped from the washing pump 400 is moved to the upper nozzle 150 or the lower nozzle 160.

In more detail, the flow guide 240 is formed in a tangential direction between the washing pump cover 241 and the washing pump cover 241 covering the pump case 271 at the center thereof, and is pumped by the washing pump 400. Vario valve guide flow path 244 for rinsing the washing water is guided to the variuo valve 310, and the varios formed at the end of the variuo valve guide flow path 244 is inserted into the vario valve 310 The valve insertion hole 243 and the turbidity sensor insertion hole 248 formed at a position spaced apart from the variegated valve insertion hole 243 by a predetermined distance are included.

In addition, the other end of the lower nozzle flow path 245 and one end of which is connected to the variuo valve insertion hole 243, the other end to the center of the washing pump cover 241, and the variuo valve insertion hole 243 A water guide flow path 246 is included starting from the point and allowing the wash water to be guided to the water guide 140.

In addition, one of the turbidity sensor flow path 248a branched at one point of the vario valve guide flow path 244 and connected to the turbidity sensor insertion hole 248 and one of the turbidity sensor insertion hole 248. Starting at the point, the drain flow path 248b for allowing the washing water flowing through the turbidity sensor flow path 248a to be moved to the drain pump 350, and formed at the end of the drain flow path 248b so that the wash water is formed in the drain pump ( A drain pump connecting hole 249 for falling to 350 is included.

In addition, the washing pump cover 241 is inserted into the nozzle holder fastening boss 236 of the sump cover 230 to the sump cover 230 by a fastening member fitted to the lower nozzle holder 210. A sump cover fastening boss 242 is formed to attach the flow guide 240. In addition, a water drain hole 247 is formed at a position spaced apart from the cleaning flow path guide 242 so that the washing water accumulated in the leakage collection chamber 232b of the sump cover 230 falls to the sump case 290. do. In addition, the flow path guide 240 is attached to the lower side of the sump cover 230 by heat fusion.

By the above configuration, the washing water pumped from the washing pump 400 is moved to the vario valve 310 mounted to the vario valve insertion hole 243 through the vario valve guide flow passage 244. . In addition, the variuos valve 310 selectively distributes the lower nozzle flow path 245 and the water guide flow path 246. In addition, a part of the washing water flows into the turbidity sensor 320 mounted in the turbidity sensor insertion hole 248 through the turbidity sensor flow path 248a branched from the vario valve guide flow path 244. The contamination degree of the washing water is detected by the turbidity sensor 320, and the washing water passing through the turbidity sensor 320 passes through the drain passage 248b and the drain pump connecting hole 249. Is moved to. In addition, the leaked washing water that falls through the dripping hole 238 formed in the sump cover 230 is dropped into the sump case 290 through the dripping hole 247 of the flow path guide 240.

7 is a perspective view of a pump lower according to the present invention.

Referring to FIG. 7, the pump lower 270 according to the present invention is seated on an upper surface of the sump case 290.

In detail, the pump lower 270 includes at least one sump case fastening boss 270a for fastening the midnight filter 220 and the sump case 290 together on an outer circumferential surface thereof, and a predetermined inside of the sump case 290. It includes a self-cleaning filter fastening boss 270b protruding at intervals to be coupled to the midnight filter 220, and a wash water suction hole 272 allowing suction water to be sucked by the rotation of the impeller 250 at a central portion thereof. .

In addition, a pump case 271 comprising an impeller seating groove 271b recessed to seat the impeller 250 and a pumping passage 271a for rotating the washing water sucked by the impeller 250 by centrifugal force is provided. Included. Here, the connecting portion from the end of the pumping flow path (271a) to the variuo valve insertion hole 274 is formed to be inclined at a predetermined angle, so that the wash water easily flows into the variuo valve (310). In addition, a turbidity sensor is formed at a distance between the variio valve insertion hole 274 connected to the end of the pumping flow path 271a and the variuo valve insertion hole 274 to insert the turbidity sensor 320. A drain pump connection pipe line 276 formed at a predetermined distance from the insertion hole 275 and the turbidity sensor insertion hole 275 to allow the washing water passing through the turbidity sensor 320 to fall into the drain pump 350. ) Is included.

In addition, between the pump case 271 and the turbidity sensor insertion hole 275 in order to allow the washing water dropped through the water drain hole 247 of the flow path guide 240 to flow into the sump case 290. A water dripping hole 277 is further included. In addition, the pump lower 270 further includes a drain pump connecting pipe 276a extending to a predetermined length on a bottom surface of the point where the drain pump connecting pipe 276 is located and connected to the drain pump 350.

In addition, the pump lower 270 is formed along the outer circumference of the pump case 271 and the variio valve insertion hole 274, so that the pump sealing seating groove 278 may be inserted and seated. And a waste chamber 273 which is dropped into the drain pump connecting pipe 276 and the drain pump connecting pipe 276a and flows into the drain pump 350 and flows back with the washing water.

In detail, the dirt chamber 273 is formed to be curved along the outer circumferential shape of the pump lower 270. The dirt contained in the wash water passing through the turbidity sensor 320 is accumulated on the bottom surface of the dirt chamber 273. In addition, the dirt discharged from the lower nozzle 160 and introduced through the dirt inlet 229 is accumulated in the dirt chamber 273.

In addition, the accumulated dirt flows into the drain pump 350 and is discharged to the outside in the drainage process.

By the configuration as described above, the washing water sucked by the rotation of the impeller 250 is moved to the vario valve 310 while rotating along the pumping passage 271a inside the pump case 271. Here, the food waste contained in the washing water introduced into the washing pump 400 by the impeller 250 is filtered by the screen filter 279 mounted below the washing water suction hole 272. As described above, the turbidity sensor 320 flows into the drain pump 350 and then flows back. Then, the backwashed water flows into the dirt chamber 273. The washing water flowing into the dirt chamber 273 is flowed back to the bottom of the tub 110 while being filtered by the washing filter 228 of the midnight filter 220 through the recovery hole 231 of the sump cover 230. It is reflowed into the sump case 290. In addition, the food waste accumulated in the waste chamber 273 is moved to the drain pump 350 in the draining process and finally discharged to the outside. Here, the washing water introduced into the waste chamber 273 is filtered by the washing filter 228 and flows back to the bottom of the tub 110. The washing filter 228 is fixed with dirt to fix the washing filter 228. Even if the blockage is blocked as described above it is possible to flow back to the bottom surface of the tub 110 through the waste inlet (229).

8 is a cross-sectional view taken along line II ′ of FIG. 1.

Referring to FIG. 8, the lower nozzle 160 is mounted on the lower nozzle holder 210 of the sump 200 and positioned above the sump 200. Then, the washing water is sprayed upward to wash the dishes stored in the lower rack 130.

In detail, the lower nozzle 160 is formed at an upper side, and a plurality of washing water discharge nozzles 161 are formed to allow the washing water to be sprayed to the lower rack 130.

In addition, a plurality of waste discharge nozzles 162 are formed at the lower side of the lower nozzle 160 to discharge the dirt contained in the washing water introduced into the lower nozzle 160. In addition, the dirt discharge nozzles 162 are formed to be symmetrical with each other. The dirt discharge nozzle 162 is formed above the dirt inlet 229 of the midnight filter 220. Thus, dirt contained in the washing water introduced into the lower nozzle 160 is discharged through the dirt discharge nozzle 162, and the discharged dirt is introduced into the dirt inlet 229 formed vertically downward.

In addition, the lower nozzle 160 is protruded inward to form a dirt guide 164 to easily discharge the dirt to the dirt discharge nozzle 162. In detail, the dirt guide 164 is bent to form a substantially "┏" shape. That is, it is bent and molded in a direction opposite to the flow direction of the washing water. Therefore, dirt is easily collected by the bent portion of the dirt guide 164, so that there is an advantage of improving the collecting performance of the dirt.

In addition, a plurality of filter cleaning nozzles 163 are formed below the lower nozzle 160. The filter washing nozzle 163 washes the washing filter 228 by allowing the washing water to be sprayed downward. Here, the respective filter cleaning nozzles 163 are formed to be symmetrical with each other, and are formed approximately vertically above the cleaning filter 228. Thus, the washing filter 228 is washed by the washing water sprayed from the filter washing nozzle 163, thereby preventing the phenomenon that the dirt adheres to the washing filter 228.

According to the present invention as proposed, the dirt flowing into the lower nozzle can be separated by the dirt guide, there is an effect that the dirt collection performance is improved.

In addition, even if dirt is stuck to the filter net of the washing filter and the filter net is clogged, the washing water can be flowed back through the dirt inlet, thereby preventing the washing water from being drained.

Claims (9)

A lower nozzle having a dirt discharge nozzle for discharging dirt in the introduced washing water; And And a sump coupled to the lower nozzle, the sump having at least one dirt inlet formed at the upper surface thereof to allow the waste discharged from the waste discharge nozzle to flow therein. The method of claim 1, And the waste discharge nozzle is formed at a position corresponding to the waste inlet. The method of claim 1, The dirt collection structure of the dishwasher, characterized in that the lower nozzle is formed with a dirt guide to easily collect the dirt. The method of claim 3, wherein The dirt guide is a dirt collection structure of the dishwasher, characterized in that formed in the "┏" shape. The method of claim 3, wherein And the dirt guide is bent and formed in a direction opposite to a flow direction of the washing water flowing in the lower nozzle. Lower nozzle; A lower nozzle holder connected to the lower nozzle; A midnight filter on which the lower nozzle holder is seated, a washing filter provided in a circumferential direction, and at least one dirt inlet through which dirt discharged from the lower nozzle is introduced; A sump cover on which the midnight filter is seated; A flow path guide coupled to the lower side of the sump cover by heat fusion and guiding the flow of the washing water; A pump lower including a dirt chamber in which the flow path guide is seated on an inner upper part, and a dirt chamber in which dirt introduced through the dirt inlet is accumulated; And And a sump case in which the pump lower is seated on the upper side, and a sump case in which the washing water is stored. The method of claim 6, The lower nozzle is formed in a position corresponding to the waste inlet, the waste collection structure of the dishwasher, characterized in that the waste discharge nozzle is formed to discharge the waste. The method of claim 6, And a filter washing nozzle formed at the lower nozzle to spray washing water for washing the washing filter. The method of claim 6, Soil collection structure of the dishwasher, characterized in that the lower nozzle is formed with a dirt guide to easily collect the waste to be discharged to the waste discharge nozzle.

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