KR20000009781A - Dish washer - Google Patents

Abstract

PURPOSE: A dish washer is provided to easily collect a fine dreg in a washing water being filtered for a first step and to prevent the fine dreg from being stuck to a fine filter for filtering the fine dreg in the first filtered washing water. CONSTITUTION: A dish washer is composed of:a main body(1) containing a washing container(3); a door(9) for rotatively opening and closing the front surface opening of the washing container along the up and down directions; a washing water pump(7) of a supply and drain integrally formed type being installed in the lower side of the washing container for adjusting the supply and the drain of the washing water by a right and reverse movement; a main supply water passage(5) being arranged in the upper unit and a lower unit areas of the washing container for supplying the washing water from the washing pump to the washing container; an upper dish basket(11) and a lower dish basket(13) being installed in the upper unit and the lower unit area of the washing container for storing the dish to be washed; and an upper unit spraying nozzle(15) and a lower unit spraying nozzle(17) being combined to the dish baskets for spraying the washing water toward the corresponding dish baskets by receiving the washing water from the main supply water passage being arranged in the upper unit and the lower unit area.

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.

5 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. 6 is an enlarged cross-sectional view of the bottom of the dishwasher of FIG. 5, and FIG. 7 is a view illustrating a state of circulating washing water in the washing stroke of FIG. 6. 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 fine debris in the wash water supplied from the water collecting portion 133 to the fine filter 135 is attached to the upper reticular portion of the fine filter 135 and is not discharged together with the washing water during the drainage stroke and is attached to the fine filter. There is a fear that the problem of polluting the washing tank remains.

Therefore, an object of the present invention, the dishwasher capable of easily collecting the fine debris in the first filtered wash water, and prevent the fine debris from being attached to the fine filter that filters the fine debris in the primary filtered wash water. To provide.

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 longitudinal cross-sectional view of a conventional dishwasher;

6 is an enlarged cross-sectional view of the bottom of the dishwasher of FIG. 5;

7 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

44: rotation axis 46: upper nozzle ball

48: downward injection unit 49: lower nozzle ball

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 part through a suction path and supplies the spray nozzle through a main water supply passage, wherein the main water passage passes between the sump case and the injection nozzle. A microfiltration chamber arranged to allow the opening; A fine filter installed in the microfiltration chamber to filter out relatively small debris in the washing water passing through the microfiltration chamber; It is achieved by the dishwasher provided in the injection nozzle and comprises a downward injection unit for spraying the washing water toward the fine filter.

Here, the downward injection unit preferably has at least one nozzle hole formed to open downward in the lower surface of the injection nozzle.

It is preferred that the washing water pump further comprises a microfiltration chamber auxiliary water supply for supplying the washing water to the microfiltration chamber.

It is preferable that the microfiltration chamber further comprises a water collecting unit communication passage communicating with the water collecting unit.

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

The microfiltration chamber is preferably the upper end is opened toward the washing tank.

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.

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 115 and the lower partial nozzle 117 are respectively attached to spray the washing water toward the corresponding dish baskets 11 and 13.

FIG. 2 is an enlarged cross-sectional view of the bottom of the dishwasher of FIG. 1, FIG. 3 is a plan sectional view of the dishwasher according to line III-III of FIG. 1, and FIG. As shown in these figures, in the bottom region of the washing tank 3, a main water supply passage 5, one end of which is connected to the water supply port 2 of the washing water pump 7, is coupled through the sump case 20, At the upper end of the main water supply passage 5, a tubular rotary shaft 44 is provided to stand. In the upper region of the rotating shaft 44, the lower part yarn nozzle 17 of the hollow body is connected to the rotating shaft 44 so as to be rotatable. A plurality of upper nozzle holes 46 are formed in the upper region of the lower part nozzle 17 to spray the washing water toward the lower dish basket 13, and the washing water is sprayed toward the fine filter 35 in the lower region. The downward injection unit 48 is provided so that it can be made. The downward injection portion 48 has a plurality of lower nozzle holes 49 disposed to face each other with the rotation shaft 44 interposed therebetween.

The bottom of the washing tank 3 is provided with a sump case 20 having a quadrangular shape upwardly opened for collecting wash water. 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, and at one side of the collecting part 21 of the washing water pump 7 A discharge port 31 connected to the suction port 53 and discharging the collected wash water is formed.

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, and passes the main water supply passage 5 between the sump case 20 and the lower part nozzle (17). Is arranged to allow. 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.

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 upper and lower part nozzles 15 and 17 are rotated by the hydraulic pressure of the washing water, and the washing water sprayed through the respective spray nozzles 15 and 17 is accommodated in the upper and lower dish baskets 11 and 13. The dishes will be washed.

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. It is temporarily accepted. The washing water contained in the water collecting unit 21 is sucked by the washing water pump 7 and is provided into the washing tank 3 via the main water supply line 5.

A part of the washing water supplied to the lower part sand nozzle 17 from the main water supply channel 5 is sprayed downward toward the fine filter 35 through the lower nozzle hole 49 formed in the downward injection part 48. The washing water sprayed through the lower nozzle hole 49 desorbs the fine debris attached to the network of the upper surface region of the micro filter 35 to the inside of the microfiltration chamber 25 by the rotation of the lower partial nozzle 17. To the filtration chamber 25.

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, a separate microfiltration chamber and a downward injection unit are provided in the injection nozzle to collect the primary filtered micro debris, and the micro debris supplied to the microfiltration chamber during the washing stroke is attached to the micro filter. After being collected in the microfiltration chamber is discharged with the washing water in the drainage administration is provided a dishwasher that can improve the cleaning performance.

Claims (8)

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 microfiltration chamber disposed between the sump case and the injection nozzle to allow passage of the main water supply passage and upwardly opened; A fine filter installed in the microfiltration chamber to filter out relatively small debris in the washing water passing through the microfiltration chamber; Dishwasher provided in the spray nozzle comprising a downward injection unit for spraying the washing water toward the fine filter. The method of claim 1, And the downward injection unit has at least one nozzle hole formed to downwardly open to a lower surface of the jet nozzle. The method of claim 1, And a microfiltration chamber auxiliary water supply passage for supplying the washing water from the washing water pump to 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 4, wherein 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, And the upper end is opened toward the washing tank. 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.