KR20090061479A

KR20090061479A - Dish washer

Info

Publication number: KR20090061479A
Application number: KR1020070128504A
Authority: KR
Inventors: 이용재
Original assignee: 엘지전자 주식회사
Priority date: 2007-12-11
Filing date: 2007-12-11
Publication date: 2009-06-16

Abstract

The present invention relates to a dishwasher, and because the filter mechanism is rotated or moved by the water pressure of the washing water supplied from the water supply port when washing the dishes, the filter mechanism is separated because the foreign matter accumulated in the filter mechanism is separated from the surface of the filter mechanism. The phenomenon of clogging by foreign matters is prevented, whereby the washing performance of the dishwasher is advantageously secured.

Description

Dishwasher {Dish washer}

The present invention relates to a dishwasher having a filter mechanism inside the sump, and more particularly, to a dishwasher capable of preventing the filter mechanism from being clogged by foreign matter filtered from the washing water in the sump.

In general, the dishwasher is a device for washing dishes by spraying the washing water to the dishes with food or dirt. That is, the dishwasher supplies clean washing water to the sump disposed in the lower part of the washing tank, and then the washing water spraying mechanism sprays the washing water to the dishes in the washing tank to wash the dishes. The washing water used to wash the dishes is recovered to the sump and then supplied to the washing water spraying mechanism through a filter mechanism in the sump.

When the dishes are washed in the above manner, all of the washing water present in the washing tank and the sump is drained to the outside. At this time, the foreign matter filtered by the filter mechanism during the washing of the dishes is discharged to the outside of the dishwasher with the washing water.

However, the conventional dishwasher has a problem that the filter mechanism is clogged by the foreign matter because foreign matter continues to accumulate inside the filter mechanism when the dishes are washed. That is, when washing the dishes, the washing water sprayed from the washing water spraying mechanism is recovered into the sump after washing the dishes, and the washing water in the sump flows to the washing water spraying mechanism after the foreign matter is filtered while passing through the filter mechanism. . Therefore, when the washing of the dishes proceeds for a long time, foreign matter is continuously accumulated on one side of the filter device corresponding to the washing water spraying mechanism so that one side of the filter device is clogged with foreign matter.

Since the foreign matter deposited on the filter mechanism acts as a flow resistance of the wash water, the flow rate and flow rate of the wash water passing through the filter mechanism is reduced because the flow of the wash water is disturbed by the foreign matter. As the washing water supplied to the washing water spraying mechanism is reduced, the washing performance of the dish washing machine is also reduced.

On the other hand, the foreign matter is deposited very firmly on one side of the filter mechanism due to the water pressure of the washing water flowing from the sump to the washing water injection mechanism during the washing of the dishes, foreign matter does not easily fall off the filter mechanism, the filter mechanism at the end of the operation of the dishwasher There is a problem that the foreign matter remains in the. If foreign matter remains in the filter mechanism as described above, odor is generated in the cleaning tank due to the decay of the foreign matter.

An object of the present invention is to provide a dishwasher capable of preventing the filter mechanism from being clogged by foreign substances and thus ensuring the washing performance of the dishwasher.

In addition, another object of the present invention is to provide a dishwasher capable of preventing foreign substances remaining in the interior of the dishwasher by easily discharging the foreign matter in the filter mechanism when draining the washing water.

The present invention, the sump is formed in the lower portion of the washing tank and the washing water is stored and the water supply port is formed on one side and the washing water is supplied from the outside and the outlet is formed on the other side and the outlet is discharged to the washing water injection mechanism, and is disposed inside the sump A filter mechanism for filtering foreign substances in the washing water flowing to the outlet, and a filter rotating mechanism provided in at least one of the filter mechanism and the sump to rotate or move the filter mechanism by the water pressure of the washing water supplied from the water supply port. To provide a dishwasher. The filter mechanism may be rotated or moved at least once by the filter rotation mechanism by washing water being supplied to the water inlet at least once when the washing water injection mechanism is operated.

The filter rotating mechanism includes a plurality of filter blades protruding from the filter mechanism so as to obtain an operating force of the filter mechanism by interference with the washing water supplied from the water supply port. On the other hand, the filter mechanism may be formed in a cylindrical shape rotatably disposed in the interior of the sump, the water supply port and the outlet may be disposed on the side of the sump. The filter blades may be spaced apart along the circumference of the side of the filter mechanism corresponding to the water inlet. The water inlet may be formed in the sump to supply the washing water in the tangential direction of the filter mechanism. The filter blades may protrude to the side of the filter mechanism so as to interfere with the flow direction of the washing water supplied from the water supply port. In addition, the filter blades, may be formed to be inclined to the side of the filter mechanism so that the water pressure of the washing water in the direction in which the filter mechanism is mounted on the sump and the rotation direction of the filter mechanism at the same time.

The filter rotation mechanism may further include a water supply nozzle formed in the water supply port and spraying the washing water to at least one of the filter blades. The filter rotating mechanism may further include a filter guide provided between the filter mechanism and the sump to rotatably support the filter mechanism.

In the dishwasher of the present invention, since the filter mechanism is rotated or moved by the water pressure of the washing water supplied from the water inlet when the dishes are washed, the foreign matter accumulated in the filter mechanism falls off from the surface of the filter mechanism. There is an advantage that the clogging phenomenon is prevented.

In addition, if the filter mechanism is not blocked by foreign matter, the flow rate and flow rate of the washing water passing through the filter mechanism is sufficiently secured, there is an advantage that the washing water is sufficiently supplied to the washing water injection mechanism to ensure the washing performance of the dishwasher.

In addition, the dishwasher of the present invention, since all the foreign matter in the filter mechanism is discharged together with the washing water discharged to the outside of the dishwasher when draining the wash water, the phenomenon that the foreign matter remains inside the filter mechanism at the end of the dishwasher is prevented foreign matter There is an advantage that the occurrence of odor due to corruption of the prevention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a cross-sectional view showing a dishwasher according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the main part of the dishwasher shown in Figure 1, Figure 3 is a disassembled filter mechanism in the sump shown in FIG. 4 and 5 are a side view and a perspective view showing a filter mechanism with the filter rotating mechanism shown in FIG. 3, FIG. 6 is a view illustrating a state in which the filter mechanism is rotated in the dish washing machine according to an embodiment of the present invention. It is the top view shown.

Referring to FIG. 1, the dishwasher 1 of the present invention includes a cabinet 2 forming an exterior, a washing tank 4 disposed in the cabinet 2 and forming a space in which dishes are washed; Dispensing the washing water into a plurality of racks (6) (8) and the dishes placed on the racks (6) (8) and the plurality of racks are arranged to be withdrawn inside the washing tank (4) In order to include the cabinet 2 and the washing water spraying mechanism 10 disposed in the washing tank (4). The cabinet 2 and the washing tank 4 are formed to correspond to the entrances to the front to allow the dishes to enter and exit. In addition, the cabinet 2 is rotatably disposed with a door 12 that opens and closes the entrances and exits. The door 12 is rotated in a drop-down manner. The rear side of the door 12 is provided with a detergent supply mechanism 14 for introducing detergent and rinse into the washing tank (4).

The washing water injection mechanism 10 is disposed in the sump 30 to wash the pumping water in the sump 30, and the washing water pumped from the washing pump 20 to the rack 6. And a plurality of nozzles 22 spraying to the dishes stored in (8), and a washing water flow passage 24 formed between the nozzles 22 and the washing pump 20. The nozzles 22 are each rotatably disposed at the bottom of the racks 6 and 8 for dispensing the washing water from under the dishes.

1 and 2, the dishwasher 1 is disposed between a sump 30 to be described later and an external water source 25 to supply clean washing water to the sump 30, and the It further includes a drain mechanism 26 disposed between the sump 30 and the outside of the cabinet 2 to discharge the washing water from the sump 30 to the outside of the cabinet 2. The water supply device 25 is a water supply hose 25a for guiding the washing water from the external water source disposed outside the cabinet 2 to the sump 30, and is disposed on the water supply hose 25a and the washing water. It includes a water supply valve (25b) for intermittent supply of. One end of the water supply hose 25a is connected to the side surface of the sump 30, and the other end of the water supply hose 25a is connected to the external water source. The water supply valve 25b is fixed to the cabinet 2. In addition, the drain mechanism 26, a drain hose (26a) for guiding the washing water in the sump (30) to the outside of the cabinet (2), and disposed on the drain hose (26a) for pumping the wash water A drain pump 26b. One end of the drain hose 26a is connected to the lower side surface of the sump 30, and the other end of the drain hose 26a is disposed outside the cabinet 2. The drain pump 26b includes an impeller disposed at a connection portion between the drain hose 26a and the sump 30, and a drain motor connected to a rotating shaft to the impeller and mounted on a side of the sump 30. do.

2, 3, and 6, the dishwasher 1 further includes a sump 30 formed in the lower portion of the washing tank 4 to store the washing water supplied from the outside and the washing water for washing the dishes. Include. One side of the sump 30 is formed with a washing water storage unit 30a for storing the washing water. And, the other side of the sump 30 is formed with a washing water guide part 30b for pumping the washing water of the washing water storage unit 30a and then distributing the washing water to the washing water passage 24. On the upper surface of the sump 30, a sump cover 31 for guiding the washing water in the washing tank 4 to the washing water storage unit 30a is detachably mounted.

A water supply port 32 connected to the water supply hose 25a is formed at one side of the washing water storage unit 30a. The water supply port 32 is formed to protrude to the outer side of the sump 30 is coupled to the end of the water supply hose (25a). On the other side of the wash water storage unit 30a, an outlet 33 communicating with the wash water guide unit 30b is formed. The outlet 33 is formed at a position opposite to the water inlet 32. A drain hole 34 is formed at a lower portion of the wash water storage unit 30a in communication with the drain hose 26a. The drain hole 34 is formed to be inclined downward toward the drain hose 26a so that the wash water and the foreign matter in the wash water storage unit 30a can be easily discharged to the drain hose 26a. An inlet 35 through which washing water for washing the dishes is formed in an upper portion of the washing water storage unit 30a.

The lower portion of the washing water guide portion 30b is equipped with a washing pump 20 for pumping the washing water from the outlet 33 to the washing water flow passage 24. A plurality of connectors 36 are formed on the washing water guide part 30b to connect the washing water flow passages 24 connected to the plurality of nozzles 22, respectively. On the other hand, the flow path opening and closing means 37 for selectively supplying the washing water to the connector 36 is formed in the washing water guide portion 30b. The flow path opening and closing means 37 is disposed on a flow path branched by the connector 36 and is mounted on the opening and closing panel 38 for selectively opening and closing the flow paths and the lower portion of the washing water guide part 30b. It includes an opening and closing motor 39 for operating the opening and closing panel 38.

2 to 6, the dishwasher 1 is rotatably disposed in the washing water storage unit 30a to filter foreign substances in the washing water flowing to the outlet 33. More). The filter mechanism 40 is formed in a cylindrical shape and is detachably mounted in the vertical direction through the inlet 35. An upper surface of the filter mechanism 40 is disposed in communication with the inlet 35, and a lower surface of the filter mechanism 40 is disposed in communication with the drain 34. Therefore, the upper and lower surfaces of the filter mechanism 40 are formed in an open structure to allow the inflow and drainage of the washing water. In addition, the filter mechanism 40 is prevented from being separated by the sump cover 31. That is, the filter mechanism 40, the lower portion is rotatably seated on the bottom surface of the wash water storage unit 30a, the upper portion is rotatably disposed below the sump cover 31.

The filter mechanism 40 is disposed inside the washing water storage unit 30a and is provided with a cylindrical filter frame 42 through which the washing water passes, and is mounted to the side of the filter frame 42 and the filter frame 42. It includes a mesh filter 44 for filtering the foreign matter in the wash water flowing out to the outlet 33 through the). The filter frame 42 is a skeleton for maintaining the shape of the filter mechanism 40 and is injection molded into a cylindrical shape using a plastic material. The mesh filter 44 is a mesh-shaped member through which washing water is passed and foreign substances are filtered out. The mesh filter 44 is mounted on the side of the filter frame 42. Therefore, since the wash water in the filter mechanism 40 passes through the mesh filter 44 and then flows out to the outlet 33, foreign matter in the wash water is introduced into the filter mechanism 40 by the mesh filter 44. Will remain.

2 to 5, the dishwasher 1 is provided in at least one of the filter mechanism 40 and the sump 30 and is formed by the water pressure of the washing water supplied from the water supply port 32. The filter mechanism 40 further includes a filter rotating mechanism 50 to rotate. The filter rotating mechanism 50 is formed to protrude in the filter mechanism 40, the plurality of filter blades 52 and interfere with the wash water supplied from the water supply port 32, and the water supply port 32 A water supply nozzle 54 is formed to spray washing water to at least one of the filter blades 52 at high pressure, and is provided between the filter mechanism 40 and the sump 30 to rotate the filter mechanism 40. And possibly a filter guide 56.

The filter blades 52 are formed to protrude outwardly from the side of the filter mechanism 40 so as to obtain the rotational force of the filter mechanism 40 from the water pressure of the washing water supplied from the water supply port 32. The filter blades 52 are formed in a plate shape perpendicular to the side of the filter frame 42 in a vertical direction, and are injection molded integrally with the filter frame 42. The filter blades 52 are arranged to be spaced apart from each other along the circumference of the filter mechanism 40. Hereinafter, it will be described that the filter blades 52 are disposed radially on the side of the filter mechanism 40.

The water supply nozzle 54 is formed to protrude from the water inlet 32 to increase the water pressure of the washing water supplied to the washing water storage unit 30a and to spray the washing water to the filter blades 52. . In FIGS. 3 and 6, the water supply nozzle 54 is formed to protrude inward from the side of the washing water storage unit 30a, but in order to avoid interference with the filter mechanism 40, the washing water storage unit 30a may be used. It is also possible to form so that it does not protrude inside. The water supply nozzle 54 has an outlet smaller than the inlet in order to increase the injection pressure of the washing water. The water supply nozzle 54 is formed to protrude in a tangential direction with respect to the side surface of the filter mechanism 40. When the washing water is sprayed in the tangential direction of the side of the filter mechanism 40 by the water supply nozzle 54 as described above, the washing water hits any one of the filter blades 52 and the filter mechanism 40 stores the washing water. The inside of the part 30a is rotated. On the other hand, since the filter blades 52 are formed vertically in the vertical direction to the side of the filter mechanism 40, in order to maximize the rotational force of the filter mechanism 40, the water supply nozzle 54 is the filter blade 52 It is formed in the washing water storage unit 30a in a horizontal direction perpendicular to the.

The filter guide 56 is detachably disposed between the upper portion of the filter mechanism 40 and the sump 30 to rotatably support the upper portion of the filter mechanism 40. That is, an upper portion of the filter guide 56 is disposed on the sump cover 31, and a lower portion of the filter guide 56 penetrates the sump cover 31 and then on an inner side surface of the filter mechanism 40. Is placed. On the other hand, the side of the filter mechanism 40 is formed with a plurality of guide ribs 46 in contact with the lower portion of the filter guide 56 to protrude inward. The guide ribs 46 are injection molded integrally with the filter frame 42 such that the guide ribs 46 are formed vertically in the vertical direction on the side of the filter frame 42. The guide ribs 46 are spaced apart from each other along the circumference of the filter mechanism 40. Therefore, since the lower portion of the filter guide 56 and the guide ribs 46 are in linear contact with each other, the contact area between the filter mechanism 40 and the filter guide 56 is reduced, thereby reducing frictional resistance and friction noise. The installation position of the filter mechanism 40 is set by the guide ribs 46 and the lower portion of the filter guide 56.

Looking at the operation of the dishwasher 1 according to the present invention configured as described above are as follows.

First, the dishes are placed on the racks 6 and 8, and the racks 6 and 8 are pushed into the washing tank 4. Then, the door 12 is lifted up to seal the entrance and exit of the washing tank 4, and then the washing step of the dish washer 1 is performed. In the washing step, the water supply device 25 supplies clean washing water to the washing water storage unit 30a of the sump 30, and the washing water spraying unit 10 supplies the washing water in the washing water storage unit 30a to the rack 6 (8) to the tableware to spray. The washing water washing the dishes flows down to the lower portion of the washing tank 4 and then flows along the sump cover 31 to the inlet 35 of the sump 30. Then, the washing water is recovered to the filter mechanism 40 in the washing water storage unit 30a through the inlet 35. The washing water introduced into the filter mechanism 40 passes through the side surface of the filter mechanism 40 and then flows out to the washing water injection mechanism 10 through the outlet 33. The filter device 40 as described above filters foreign matters from the wash water and prevents the foreign matter in the wash water from leaking to the wash water injection mechanism 10.

On the other hand, if the washing step continues for a certain time, the amount of foreign matter accumulated on the side of the filter mechanism 40 is continuously increased, the foreign matter is tightly adhered by the water pressure of the washing water flowing out to the outlet 33. That is, since the side portion of the filter mechanism 40 corresponding to the outlet 33 is blocked by the foreign matter, the flow rate and flow rate of the washing water flowing into the washing water injection mechanism 10 is likely to be reduced. Therefore, the filter device 40 is rotated by supplying the washing water to the washing water storage unit 30a of the sump 30 by the water supply device 25. When the filter mechanism 40 is rotated as described above, the foreign matter accumulated on the side of the filter mechanism 40 falls down, and the portion of the side of the filter mechanism 40 in which no foreign matter is accumulated is the outlet 33. It may be arranged to correspond to.

When the filter mechanism 40 is rotated in more detail, the washing water supplied through the water inlet 32 is discharged from the filter blades 52 of the filter mechanism 40 by the water supply nozzle 54. Either one is sprayed at high pressure. In addition, the rotational power of the filter mechanism 40 is generated by the interaction between the washing water sprayed from the feed water nozzle 54 and the filter blades 52. By the rotational force generated by the filter blade 52 and the washing water, the filter mechanism 40 is rotated in one direction in the washing water storage unit (30a). As the filter mechanism 40 is rotated, the water pressure of the washing water is sequentially applied to the filter blades 52.

The rotation of the filter mechanism 40 can be adjusted by controlling the operation of the water supply mechanism 25. That is, when the washing water supplied to the water supply port 32 is controlled by the water supply mechanism 25, the rotation time, the rotation amount, the number of rotations, and the like of the filter mechanism 40 are adjusted. The rotation time of the filter mechanism 40, the washing water injection mechanism 10 is operated for a predetermined time is preferably a time when a predetermined amount or more foreign matter deposited on the side of the filter mechanism (40). The amount of rotation and the number of rotations of the filter mechanism 40 are appropriately determined according to the washing capacity of the dishwasher 1. The filter mechanism 40 may be operated while repeating rotation and stop at a predetermined interval as necessary.

When the washing step is completed, after the operation of the washing water injection mechanism 10 is stopped, the drainage mechanism 26 drains the washing water in the sump 30 to the outside, and proceeds to the rinsing step of the dishwasher 1 do. The foreign matter in the filter mechanism 40 is discharged together with the washing water through the drain mechanism (26). In the rinsing step, the water supply device 25 is operated to supply clean washing water to the inside of the sump 30, and the washing water spraying device 10 is operated to rinse the dishes with the washing water. On the other hand, later in the rinsing step, the detergent supply mechanism 14 supplies the rinse inside the washing tank (4).

When the rinsing step is completed, after the operation of the washing water injection mechanism 10 is stopped, the drainage mechanism 26 drains the washing water in the sump 30 to the outside, and proceeds to drying the dish washer 1 Let's do it. In the drying step, the dishes are dried by supplying dry hot air into the washing tank 4. When the drying step is completed, the operation of the dishwasher 1 is terminated.

7 is a side view showing the filter mechanism in the dishwasher according to another embodiment of the present invention. In FIG. 7, the same reference numerals as those of the filter mechanism of the dish washing machine shown in FIGS. 1 to 6 denote the same members. Hereinafter, descriptions will be made mainly on points different from the dishwasher illustrated in FIGS. 1 to 6.

Referring to FIG. 7, the dishwasher 100 illustrated in FIG. 7 is different from the dishwasher 1 illustrated in FIGS. 1 to 6, so that the filter blades 152 of the filter rotating mechanism may include the filter mechanism 140. It is a point formed obliquely to the side of. The filter blades 152 are side surfaces of the filter mechanism 140 such that water pressure of the washing water may be simultaneously acted in the rotation direction B of the filter mechanism 140 and the mounting direction C of the filter mechanism 140. It may be formed to be inclined to. Therefore, the side of the filter frame 142 of the filter mechanism 140 is also preferably formed to be inclined in the same manner as the filter blade 152.

That is, the washing water sprayed from the feed nozzle 54 in the horizontal direction A impinges on the inclined surfaces of the filter blades 52. A portion of the hydraulic pressure of the washing water is acted in the direction (B) of rotation of the filter mechanism 40, the remaining portion of the hydraulic pressure of the washing water is acted in the lower direction (C) on which the filter mechanism 40 is mounted. Therefore, the filter mechanism 40 may not only be rotated by the water pressure of the washing water, but also may be stably disposed in the washing water storage unit 30a.

As described above with reference to the drawings illustrated in the dishwasher according to the present invention, the present invention is not limited to the above embodiments and drawings, and various modifications are possible by those skilled in the art within the scope of the technical idea of the invention Of course. That is, the filter mechanism may be arranged to be movable inside the sump so as to have a straight or curved moving path. In addition, a separate washing water supply mechanism for applying hydraulic pressure to the filter turning mechanism may be disposed on the sump.

Employing the dishwasher according to the present invention, it is possible to prevent the phenomenon that the filter mechanism in the sump during the washing of the dishes by the foreign matter can be manufactured dishwasher that ensures a stable washing performance.

1 is a cross-sectional view showing a dishwasher according to an embodiment of the present invention;

2 is a cross-sectional view showing the main part of the dishwasher shown in FIG.

3 is an exploded view of the filter mechanism in the sump shown in FIG.

4 is a side view of the filter mechanism having the filter rotating mechanism shown in FIG.

5 is a perspective view of the filter mechanism having the filter rotating mechanism shown in FIG.

Figure 6 is a plan view showing a rotation state of the filter mechanism in the dishwasher according to an embodiment of the present invention,

7 is a side view showing the filter mechanism in the dishwasher according to another embodiment of the present invention;

1, 100: dishwasher 2: cabinet

4: washing tank 10: washing water spray mechanism

30: sump 32: water inlet

33: outlet 40, 140: filter mechanism

50, 150: filter turning mechanism 52, 152: filter blade

54: water supply nozzle 56: filter guide

Claims

A sump formed at a lower portion of the washing tank to store the washing water, and at one side thereof, a water supply hole for supplying the washing water from the outside, and an outlet for forming the water outlet on the other side of the washing water;

A filter mechanism disposed inside the sump to filter foreign substances in the washing water flowing to the outlet;

And a filter rotating mechanism provided in at least one of the filter mechanism and the sump to rotate or move the filter mechanism by the water pressure of the washing water supplied from the water supply port.

The method according to claim 1,

The filter device is a dishwasher, the washing water is supplied at least once to the water supply port during the operation of the washing water injection mechanism is rotated or moved at least once by the filter rotation mechanism.

The method according to claim 2,

The filter rotating mechanism includes a plurality of filter blades protruding from the filter mechanism to obtain an operating force of the filter mechanism by interference with the washing water supplied from the water supply port.

The method according to claim 3,

The filter mechanism is formed in a cylindrical shape rotatably disposed in the interior of the sump, the water supply port and the outlet is disposed on the side of the sump,

The filter blades are disposed in the dishwasher spaced apart along the circumference on the side of the filter mechanism corresponding to the water inlet.

The method according to claim 4,

The water inlet is formed in the sump to supply the washing water in the tangential direction of the filter mechanism, the filter blades protrude on the side of the filter mechanism so as to interfere with the flow direction of the washing water supplied from the water inlet.

The method according to claim 5,

The filter blades, dishwasher is formed to be inclined to the side of the filter mechanism so that the water pressure of the washing water in the direction in which the filter mechanism is mounted to the sump and the rotation direction of the filter mechanism at the same time.

The method according to any one of claims 2 to 6,

The filter rotating mechanism, the dishwasher further comprises a water supply nozzle which is formed in the water supply port for spraying the washing water to at least one of the filter blades.

The method according to any one of claims 2 to 6,

The filter rotating mechanism further comprises a filter guide provided between the filter mechanism and the sump to rotatably support the filter mechanism.