KR100267941B1 - Dish washer - Google Patents

Abstract

The present invention provides a sump case having a main body forming a washing tank, a spray nozzle installed in the washing tank and spraying the washing water, and installed at a bottom of the washing tank, and having a downwardly recessed catching portion for collecting the washing water in the washing tank. A dishwasher having a washing water pump for sucking the washing water in the water collecting unit through a suction channel and supplying the spray nozzle through a main water supply channel, the washing machine being installed in the water collecting unit and having relatively large residues in the washing water flowing into the water collecting unit. A normal filter for filtering; A microfiltration chamber installed at a bottom of the washing tank and installed to communicate with the washing tank; A microfiltration chamber auxiliary water supply for supplying the washing water from the washing water pump to the microfiltration chamber; It is characterized in that it comprises a fine filter installed in the microfiltration chamber to filter out relatively small debris in the wash water passing through the microfiltration chamber. As a result, a dishwasher is provided to smoothly collect the fine dregs in the washing water and to improve the washing performance by smoothly discharging the fine dregs collected during the drainage to the outside together with the washing water.

Description

dish washer

The present invention relates to a dishwasher, and more particularly, a main body forming a washing tank, a spray nozzle installed in the washing tank and spraying the washing water, and a lower portion of the washing tank for collecting the washing water in the washing tank. It relates to a dishwasher having a sump case having a recessed catchment portion, and a wash water pump for sucking the wash water in the catchment portion through a suction passage and supplying the spray nozzle through a main water supply passage.

6 is a longitudinal cross-sectional view of a conventional dishwasher. As shown in this figure, the dishwasher has a main body 101 having a washing tank 103 formed therein, and a door 109 for opening and closing the front opening of the washing tank 103 in a vertical direction. The lower side of the washing tank 103 is provided with a water supply and drainage type washing water pump 107 for adjusting the water supply and drainage of the washing water by forward and reverse driving. In the upper and lower regions of the washing tank 103, a main water supply passage 105 for supplying the washing water from the washing water pump 107 to the washing tank 103 is provided.

Upper and lower dish baskets 111 and 113 are respectively installed in the upper and lower regions of the washing tank 103 to accommodate the dishes to be washed. Each of the dish baskets 111 and 113 is provided with a main water supply in the upper and lower regions. The upper injection nozzle 115 and the lower part injection nozzle 117 are respectively attached to receive the washing water from the furnace 105 and spray the washing water toward the corresponding dish baskets 111 and 113.

On the other hand, the bottom of the washing tank 103 is provided with a sump case 120 having a rectangular shape that is upwardly opened to collect the washing water. The sump case 120 is provided with a normal filter 123 for filtering relatively large debris in the washing water, and a fine filter 135 for filtering relatively small debris in the washing water. On the bottom side of the sump case 120, a collecting part 121 for collecting the washing water passing through the normal filter 123 and the fine filter 135 is recessed downward.

FIG. 7 is an enlarged cross-sectional view of the bottom of the dishwasher of FIG. 6, and FIG. 8 is a view illustrating a state of circulating washing water in the washing stroke of FIG. 7. As shown in these figures, a normal filter 123 formed of a rectangular plate-shaped member is coupled to an upper region of the sump case 120 to block an upward opening of the sump case 120. In the normal filter 123, a plurality of filter holes 126 are formed through the plate surface, and a fine filter accommodation hole 136 is formed in the central region of the normal filter 123 to accommodate the fine filter 135. .

The fine filter 135 has a cylindrical frame 134 and a reticular portion 138 coupled to the upper and circumferential surfaces of the frame 134. The fine filter 135 is installed so that the upper surface thereof protrudes from the plate surface of the normal filter 123, and the lower surface of the fine filter 135 faces the water collecting part 121 formed in the sump case 120. It is coupled to the fine filter accommodation hole (136).

A discharge port 131 is formed at one side of the collecting unit 121 to be connected to the suction side of the washing water pump 107 to discharge the collected washing water, and a washing water pump 107 is provided at the bottom thereof so that the washing water including the residue can be introduced therein. A collecting portion 133 branched from the discharge side of the discharge portion extends in the vertical direction toward the inside of the fine filter 135.

By such a configuration, when the washing course is selected, the control unit (not shown) allows the washing water to be supplied into the washing tank 103 and rotates the washing water pump 107 forward. The washing water supplied in the washing tank 103 is collected by the water collecting unit 121 of the sump case 120 and is sucked by the washing water pump 107 to the upper and lower four nozzles 115 and 117 through the main water supply passage 105. Each is supplied. The washing water supplied to the upper and lower partial nozzles 115 and 117 is sprayed through the respective injection nozzles 115 and 117 to wash the dishes accommodated in the upper and lower dish baskets 111 and 113.

After washing the dishes, the washing water dropped to the bottom area is filtered through the normal filter 123 provided in the sump case 120, and after the relatively large debris in the washing water is filtered, the water collecting part 121 of the sump case 120 Temporarily accepted. The wash water accommodated in the water collecting unit 121 is provided by the washing water pump 107 and then supplied into the washing tank 103 via the main water supply channel 105. At this time, a part of the washing water flows into the fine filter 135 provided in the sump case 120 through the collecting portion 133 branched from the discharge side of the washing water pump 107. The washing water introduced into the fine filter 135 is introduced into the washing tank 103 through the fine filter 135, and the fine debris in the washing water is caught by the reticular portion 138 of the fine filter 135 and collected by the catching part ( 121).

Fine debris collected in the collecting unit 121 is sucked by the washing water pump 107 during the drainage stroke and discharged to the outside together with the washing water through the drainage passage 104.

However, in the conventional dishwasher, the fine filter 135 is installed to be combined with the normal filter 123 to be accommodated in the collecting part 121 of the sump case 120, and passes through the normal filter 123. Debris in the wash water may interfere with the inflow to the catchment 121. In addition, the washing water pump 107 and the fine filter 135 is relatively spaced apart, the pumping force of the washing water pump 107 may be lowered. In addition, since the discharge port 131 of the collecting unit 121 is always open, there may be a problem in that fine waste collected in the collecting unit 121 is continuously circulated during the washing operation.

Accordingly, an object of the present invention is to provide a dishwasher capable of easily collecting fine debris in the primary filtered washing water and smoothly discharging the collected debris together with the washing water during the drainage stroke.

1 is a longitudinal sectional view of the dishwasher according to the present invention;

2 is an enlarged cross-sectional view of the bottom of the dishwasher 1 of FIG.

3 is a plan sectional view of the dish washing machine taken along line III-III of FIG.

Figure 4 is a washing water circulation state of the washing stroke of Figure 2,

5 is a washing water circulation state in the drainage stroke of Figure 2,

6 is a longitudinal cross-sectional view of a conventional dishwasher;

7 is an enlarged cross-sectional view of the bottom of the dishwasher of FIG.

8 is a washing water circulation state diagram in the washing administration of FIG.

* Explanation of symbols for the main parts of the drawings

1: body 3: washing tank

5: main water supply 7: washing water pump

9: door 15: upper injection nozzle

17: lower part nozzle 20: sump case

21: collecting part 23: normal filter

25: microfiltration chamber 31: outlet

33: water collecting part 35: fine filter

37: Microfiltration auxiliary water supply passage 39: catchment communication passage

The object is, according to the present invention, the main body forming the washing tank, the spray nozzle is installed in the washing tank to spray the washing water, and the bottom of the washing tank is installed in the bottom of the washing tank, the down-cold catching portion for collecting the washing water in the washing tank A dishwasher having a sump case and a washing water pump which sucks the washing water in the collecting portion through a suction passage and supplies the spray nozzle to the spray nozzle through a main water supply passage, the washing machine installed in the collecting portion and flowing into the collecting portion. A normal filter for filtering relatively large debris; A microfiltration chamber installed at a bottom of the washing tank and installed to communicate with the washing tank; A microfiltration chamber auxiliary water supply for supplying the washing water from the washing water pump to the microfiltration chamber; Is installed in the microfiltration chamber is achieved by a dishwasher comprising a fine filter for filtering out relatively small debris in the wash water passing through the microfiltration chamber.

Here, it is preferable that the microfiltration chamber and the collecting part further include a collecting part communication path communicating with each other.

Preferably, the collecting part communication path extends inclined downward from the microfiltration chamber and extends to the collecting part.

The microfiltration chamber extends along the vertical axis, and the upper end portion is preferably opened toward the washing tank.

It is preferable that the microfiltration chamber auxiliary water supply branch is branched from the main water supply channel and connected to a lower end of the microfiltration chamber.

The fine filter is preferably installed to block the top opening of the microfiltration chamber.

The microfiltration chamber preferably has a funnel shape having a larger cross-sectional area toward the top.

It is preferable to further include a water collecting portion which guides a part of the washing water through the main water supply passage to the water collecting unit.

It is preferable that the distal end portion of the water collecting portion extends vertically in the water collecting portion.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal sectional view of the dishwasher according to the present invention. As shown in this figure, the dishwasher according to the present invention has a main body 1 having a washing tank 3 formed therein, and a door 9 for opening and closing the front opening of the washing tank 3 along the vertical direction. . Under the washing tank 3, a water supply and drainage type washing water pump 7 for adjusting the water supply and drainage of the washing water by forward and reverse driving is provided. In the upper and lower regions of the washing tank 3, a main water supply passage 5 for supplying the washing water from the washing water pump 7 to the washing tank 3 is provided.

An upper table basket 11 and a lower table basket 13 are respectively installed in the upper and lower regions of the washing tank 3 to accommodate the dishes to be washed. Each of the dish baskets includes a main water supply channel 5 provided in the upper and lower regions. The upper injection nozzle 15 and the lower part injection nozzle 17 are respectively attached so as to receive the washing water and spray the washing water toward the corresponding dish baskets 11 and 13.

The bottom of the washing tank 3 is provided with a sump case 20 having a quadrangular shape upwardly opened for collecting wash water. A washing water pump 7 is installed at one side of the sump case 20, and a main water supply passage 5 connecting the washing water pump 7 and the lower part sand nozzle 17 is provided at the discharge side of the washing water pump 7. .

Figure 2 is an enlarged cross-sectional view of the bottom of the dishwasher of Figure 1, Figure 3 is a plan sectional view of the dishwasher according to line III-III of Figure 1, Figure 4 is a washing water circulation state diagram of the washing stroke of Figure 2, Figure 5 2 shows the state of washing water circulation in the drainage stroke. As shown in these figures, the sump case 20 is provided with a normal filter 23 for filtering relatively large debris in the washing water, and a microfiltration chamber 25 for filtering relatively small debris in the washing water. On the recessed side of the sump case 20, a collecting part 21 for collecting the washing water passing through the normal filter 23 and the microfiltration chamber 25 is provided.

The normal filter 23 is installed to block the upward opening of the sump case 20 by the rectangular plate-like member, the inclined surface 24 disposed to be inclined downward toward one side, and the depression of the cylindrical shape recessed from the lower portion of the inclined surface 24. It has a portion 22. A plurality of filter holes 26 penetrating the plate surface are formed in the inclined surface 24 and the depression 22. The normal filter 23 is installed in the sump case 20 so that the depression 22 is accommodated in the water collecting portion 21 formed on the depression side of the sump case 20.

On the other hand, the microfiltration chamber 25 has an upwardly open funnel shape having a larger flow cross-sectional area toward the upper side. The microfiltration chamber 25 is coupled to one side of the collecting portion 21 and accommodated in the sump case 20 so that the upper end portion protrudes from the bottom of the washing tank 3. In the upper region of the microfiltration chamber 25, the fine filter 35 of the reticular body allowing the first filtered water to pass through the normal filter 23 and blocking the fine debris and remaining in the microfiltration chamber 25 is provided. Are combined. The bottom of the microfiltration chamber 25 is in communication with the microfiltration auxiliary water supply passage 37 branched from the main water supply passage 5 from the washing water pump 7 to the lower part nozzle No. 17. In addition, at the bottom side of the microfiltration chamber 25, a collecting part communication path 39 communicating with the collecting part 21 of the sump case 20 extends inclined downward toward the collecting part 21 of the sump case 20. have.

One side of the water collecting unit 21 is connected to the inlet 53 of the washing water pump 7 is formed with a discharge port 31 for discharging the collected water, the bottom of the washing water pump so that the washing water including the debris can be introduced ( A water collecting partial flow passage 33 branched from the main water supply channel 5 from 7) to the lower partial sand nozzle 17 extends in the vertical direction toward the inside of the water collecting portion 21.

By such a configuration, when the washing course is selected, the controller not shown rotates the washing water pump 7 so that the washing water is supplied into the washing tank 3. The washing water supplied into the washing tank 3 is collected by the water collecting unit 21 of the sump case 20, and then is sucked by the washing water pump 7 and the upper and lower sand nozzles 15 and 17 through the main water supply passage 5. Are each supplied. The washing water supplied to the upper and lower part sand nozzles 15 and 17 is sprayed through the respective spray nozzles to wash the dishes accommodated in the upper and lower dish baskets 11 and 13.

After washing the dishes, the washing water dropped to the bottom region is filtered through the normal filter 23 provided in the sump case 20, and after the relatively large debris in the washing water is filtered, the water collecting part 21 of the sump case 20 is washed. Temporarily accepted. The washing water contained in the water collecting unit 21 is provided into the washing tank 3 via the main water supply line 5 sucked by the washing water pump 7.

The water collecting portion road 33 branched from the main water supply passage 5 supplies some of the washing water toward the spray nozzle through the main water supply passage 5 into the water collecting portion 21. The washing water supplied from the water collecting portion 33 to the water collecting portion 21 is circulated through some of the fine waste introduced from the microfiltration chamber 25 through the water collecting passage 39 and the main water supply passage 5. The fine debris collected in the collecting part 21 is left in the collecting part 21.

On the other hand, the washing water supplied from the microfiltration chamber auxiliary water supply passage 37 to the microfiltration chamber 25 is supplied into the washing tank 3 through the microfilter 35 provided on the upper surface of the microfiltration chamber 25. . At this time, the fine debris in the washing water is filtered by the fine filter 35 and remains in the microfiltration chamber 25.

When the washing stroke is finished and the drainage stroke is progressed, the washing water in the water collecting part 21 is sucked by the washing pump 7 and discharged to the outside through the drainage passage 4. At this time, when the water level of the collecting portion 21 is lowered as the drainage stroke proceeds, the fine residues remaining in the microfiltration chamber 25 along the collecting passage communicating passage 39 communicated with the microfiltration chamber 25. It is discharged to the outside with the wash water.

As described above, according to the present invention, by providing a separate microfiltration room to collect the fine debris passed through the normal filter, by washing the fine debris collected in the microfiltration chamber with the washing water discharged during the drainage stroke A dishwasher is provided that can improve performance.

Claims (9)

A sump case having a main body forming a washing tank, a spray nozzle installed in the washing tank and spraying washing water, a sump case installed at a bottom of the washing tank, and having a downwardly recessed collecting portion for collecting the washing water in the washing tank; In the dishwasher having a washing water pump for sucking the washing water through the suction passage and supplying the spray nozzle through the main water supply passage, A normal filter installed in the water collecting part to filter out relatively large debris in the washing water flowing into the water collecting part; A microfiltration chamber installed at a bottom of the washing tank and installed to communicate with the washing tank; A microfiltration chamber auxiliary water supply for supplying the washing water from the washing water pump to the microfiltration chamber; And a fine filter installed in the microfiltration chamber to filter out relatively small debris in the washing water passing through the microfiltration chamber. The method of claim 1, And a water collecting unit communication path communicating the microfiltration chamber with the water collecting unit. The method of claim 2, The water collecting unit communication passage is inclined downward from the microfiltration chamber to extend to the water collecting unit. The method of claim 1, The microfiltration chamber extends along a vertical axis, and an upper end thereof is opened toward the washing tank. The method of claim 1, The microfiltration chamber auxiliary water supply branch is branched from the main water supply channel, the dishwasher, characterized in that connected to the lower end of the microfiltration chamber. The method of claim 1, The fine filter is a dishwasher, characterized in that installed to block the top opening of the microfiltration chamber. The method of claim 1, The microfiltration chamber dishwasher, characterized in that having a funnel shape having a wide cross-sectional area toward the top. The method of claim 1, And a water collecting portion unit for guiding a portion of the washing water through the main water supply passage to the water collecting unit. The method of claim 8, And a distal end of the water collecting portion unit extending in the water collecting portion in a vertical direction.