KR100511967B1 - Filter assembly of dish washer - Google Patents

Abstract

The present invention relates to a filter device for a dishwasher that filters dirt from washing water, and is provided at a lower portion of a washing tank in which dishware is washed, and a collecting container for collecting washing water, and installed inside the collecting container to filter relatively large dirt from washing water. A second filter for filtering the first filter and the intermediate dirt, a washing pump installed at one side of the sump and allowing the washing water passing through the first and second filters to be circulated to the washing tank, and installed between the washing pump and the sump And a waste circulation pipe for recycling a part of the washing water passing through the washing pump to the sump, and a waste collecting part is formed at one side of the sump, and fine water from the washing water introduced into the waste collection part through the waste circulation pipe. The third filter for filtering the dirt, and the fine dirt that is filtered in the waste collector at the same time discharged during the drainage of the washing water It comprises a soil discharging means by which.

Description

Filter unit of dishwasher {Filter assembly of dish washer}

The present invention relates to a filter device for a dishwasher for filtering dirt from washing water, and more particularly, to a filter device for a dishwasher, which not only filters fine dirt but also discharges fine dirt at the same time as the washing water.

1 is a side cross-sectional view showing a dishwasher according to the prior art, Figure 2 is a cross-sectional view showing a filter device of the dishwasher according to the prior art.

The dishwasher according to the prior art, as shown in Figure 1, the main body 2 with the front open, the door 3 is installed to be opened and closed on the front of the main body 2, the inside of the main body (2) A washing tank 4 provided therein and having a space for washing dishes therein, a water collecting tank 6 installed under the washing tank 4 to contain the washing water, and upper and lower sides of the washing tank 4 are respectively slidable. Upper and lower shelves 7 and 8 on which dishes are placed and placed on top of the upper and lower flow paths 11 and 12 connected to the sump container 6 and the upper and lower shelves 7 and 8. Upper / lower nozzles 13 and 14 for spraying the washing water to the side, a washing pump 20 for pumping the washing water inside the sump 6 to the upper / lower flow paths 11 and 12, and the sump 6) comprises a filter assembly (30) installed to filter the dirt from the washing water is installed inside the circulation.

Of course, the sump (6) is a water supply valve (not shown) for supplying the wash water into the sump (6) and the water supply pipe (not shown) and a drain pump for draining the wash water in the sump (6) to the outside 15 and the drain pipe 16 are provided.

At this time, the drain pipe 16 is installed to be connected to the lower side of the sump (6) in which the filter assembly 30 is mounted, the drain pump 15 is installed in the middle of the drain pipe (16).

In particular, as shown in FIG. 2, the filter assembly 30 is installed inside the sump 6 to filter relatively large dirt from the washing water, and the first filter 32 and the like. It is installed in the circumference and consists of a second filter 34 for filtering relatively small dirt from the wash water passing through the first filter (32).

Here, the first filter 32 has a cylindrical shape with holes 32a having a relatively large size on the outer circumferential surface and the lower surface thereof, and the second filter 34 has a cylindrical shape with the lower surface open at the first circumferential surface thereof. Holes 34a smaller in size than the holes 32a of the filter are formed.

Accordingly, as the washing pump 20 is operated, the washing water filtered through the filter assembly 30 is filtered by the washing pump 20 through the upper / lower nozzles 13 and 14, respectively. It is injected to the lower shelf 7, 8 side.

However, the dishwasher according to the related art, as the washing pump 20 is operated, the washing water accumulated in the sump 6 simply passes through the first and second filters 32 and 34 so that the upper / lower shelf 7 , 8) Because it is circulated to the side, there is a limit to improve the cleaning performance because it can not filter out fine dirt.

Therefore, recently, a third filter (not shown) is installed to filter fine dirt on the outer circumference of the first and second filters 32 and 34, or a third filter to filter fine dirt on the bottom surface of the washing tank 2. (Not shown) is installed, and the third filter periodically cleans the filter directly by the user because the fine water is filtered and stacked as the washing water is circulated, thereby preventing the washing water from being circulated, or at the lower nozzle 14 side. There is a problem that a nozzle hole (not shown) for cleaning the third filter must be formed separately.

The present invention has been made to solve the problems of the prior art, to provide a filter device for a dishwasher that can not only filter out fine dirt from the circulating washing water, but can also discharge the filtered fine dirt at the same time draining the washing water. The purpose is.

The filter device of the dishwasher according to the present invention for solving the above problems is installed in the lower portion of the washing tank to wash the dishes and the sump collecting water, the first is installed inside the sump to filter relatively large dirt from the washing water A filter, a second filter for filtering intermediate dirt from the washing water passing through the first filter, a washing pump installed at one side of the sump and allowing the washing water passing through the first and second filters to circulate to the washing tank; The waste pump is installed between the washing pump and the sump to allow a part of the washing water that has passed through the washing pump to be recycled to the sump, and a waste collecting part is formed in the sump. A third filter for filtering fine dirt from the washing water introduced into the dirt collecting unit, and washing the fine dirt filtered into the dirt collecting unit It comprises a waste discharge means for discharging at the same time when draining, the waste discharge means is installed in communication with the inside of the second filter, the drain pipe for washing water is drained, the drain pump installed in the drain pipe, the drain pipe and dirt Characterized in that it consists of an auxiliary drain pipe installed between the collecting portion.

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

Figure 3 is a side cross-sectional view showing a dishwasher according to the present invention, Figure 4 is a cross-sectional view showing a filter device of the dishwasher according to the invention, Figure 5 is an enlarged perspective view of A of FIG.

As shown in FIG. 3, the dishwasher according to the present invention includes a main body 52 having a front surface opened, a door 53 installed on the front surface of the main body 52 to be opened and closed, and an inside of the main body 52. Sliding in the washing tank 54 is installed in the washing tank 54 is formed therein, the sump 56 is installed in the lower portion of the washing tank 54 to contain the washing water, and the upper and lower sides of the washing tank 54, respectively The upper and lower shelves 57 and 58 where possible to be mounted and placed on the table, and the upper and lower flow paths 61 and 62 connected to the water collecting container 56, respectively, and the upper and lower shelves 57 and 58. The upper and lower nozzles 63 and 64 for spraying the washing water to the side), the washing pump 70 for pumping the washing water in the sump 56 to the upper and lower flow paths 61 and 62, and the sump (56) It is installed inside to not only filter the dirt from the circulating wash water, but also removes the filtered dirt at the same time when draining the wash water. That is configured to include a filter unit (80).

Of course, the sump (56) is a water supply valve (not shown) for supplying the wash water into the sump (56) and the water supply pipe (not shown) and a drain pump for draining the wash water in the sump (56) to the outside 65 and the drain pipe 66 are provided.

Here, the washing pump 70 is a pump case 72 in communication with the sump container 56, an impeller 74 built in the pump case 72 to pump the washing water, and the impeller 74 and It is made of a motor (76) connected to the rotating shaft (74a) to rotate the impeller (74), the pump case 72 is connected to the sump (56) and the upper and lower flow paths (61, 62), respectively It is installed as possible.

In addition, the drain pipe 66 is installed to be connected to the bottom of the sump 56, the drain pump 65 is installed in the middle of the drain pipe 66, the drain pipe 66 in the inlet side of the drain pipe 66. The first backflow prevention valve (66a) is installed so that the washing water introduced into the c) does not flow back to the sump (56).

In particular, as shown in FIG. 4, the filter device 80 is installed inside the sump 56 to filter relatively large dirt from washing water, and the first filter 82 and the like. A second filter 84 mounted around the filter to filter the intermediate dirt from the washing water passing through the first filter 82 and a part of the washing water passing through the first and second filters 82 and 84 The waste water circulation pipe 85 installed between the washing pump 70 and the sump container 56 so as to be circulated to the 56 and the washing water introduced into the sump container 56 through the waste circulation pipe 85. The third filter 86 is installed so that the dirt collecting portion (C) is formed on the lower side of the sump (56) to filter the fine dirt from the microorganisms to be discharged at the same time when the fine water filtered by the waste collecting portion (C) It consists of waste discharge means.

Specifically, the waste circulation pipe 85 is sucked in the axial direction of the impeller 74 is discharged in the radial direction as the impeller 74 is rotated when the cleaning pump 70 is operated, wherein One end is connected to the pump case 72 on the side where the fine dirt is drawn during the operation of the impeller 74 so that the washing water containing a lot of fine dirt flows into the dirt circulation tube 85, and the other end is the waste collecting part. (C) is installed to be connected to the lower side, the washing water introduced into the waste collection portion (C) through the waste circulation pipe 85 as the impeller 74 is operated at the outlet side of the waste circulation pipe (85) The second non-return valve 85a is installed to prevent the flow back to the dirt circulation pipe 85.

And, as shown in FIG. 5, the third filter 86 includes a strainer 86a in which fine holes h are formed so as to filter fine dirt from the washing water introduced into the waste collecting part C. It consists of a support frame (86b) for supporting the periphery net (86a) is installed to form a dust collecting portion (C) on the lower side of the sump (56), the center of the sieve (86a) toward the dirt collecting portion (C) side The plate-shaped cap 86c is further formed to allow the washing water introduced at a high pressure to be evenly sprayed to prevent dirt from concentrating on a specific portion.

In addition, the waste discharge means is installed between the waste collection portion (C) and the drain pipe 66, and as the wash water is circulated, the auxiliary waste pipe 92 is discharged at the same time when the filtered waste water drainage, the auxiliary drain pipe ( 92 is installed so that one end is connected to the lower end of the waste collection portion (C), and the other end is connected to the drain pipe 66 between the drain pump (65) and the first check valve (66a).

Of course, the waste discharge means should further include a drain pump 65 and a drain pipe 66 for draining the wash water so that the fine waste water can be discharged simultaneously with the wash water as well as the auxiliary drain pipe 92.

In this case, the drain pipe 66 is installed so as to communicate with the sump 56 inside the second filter 84 so that the dirt filtered by the second filter 84 when the washing water circulation can be discharged simultaneously with the washing water when draining the washing water. do.

Looking at the operation of the present invention configured as described above are as follows.

6A and 6B are views illustrating the flow of the washing water when the washing water is circulated and the washing water drainage in the dishwasher according to the present invention, respectively.

First, when the dishwasher is operated, the water supply valve is opened so that the washing water is supplied to the inside of the washing tank 54 through the water supply pipe, and the washing water accumulated on the sump container 56 is operated by the washing pump 70. As shown in FIG. 6A, as the impeller 74 is rotated, the washing water on the sump container 56 passes through the first and second filters 82 and 84 and is relatively large. The dirt is filtered and then introduced in the axial direction of the impeller 74 and discharged in the radial direction.

Here, most of the washing water passing through the impeller 74 is pumped toward the upper and lower flow passages 61 and 62, and the washing water pumped along the upper and lower flow passages 61 and 62 is upper and lower nozzles 63. , 64 is sprayed toward the upper and lower shelves 57 and 58 to wash dishes.

As described above, most of the washing water passing through the washing pump 70 is the sump 56, the pump case 72, the upper and lower flow passages 61 and 62, and the upper and lower nozzles 63 and 64. And, it is circulated along the washing tank 54 to wash the dishes.

On the other hand, a portion of the washing water passing through the impeller 74 is pumped to the waste collecting portion (C) side through the waste circulation pipe 85, the washing water introduced to the waste collecting portion (C) side is the third The fine dirt is filtered while passing through the filter 86 and then recycled to the water collecting container 56. Specifically, the washing water introduced into the dirt collecting part C is dispersed by hitting the cap 86c and the strainer 86a. ), Fine dirt is filtered and recycled to the sump container 56, and fine dirt is filtered inside the dirt collecting part (C).

At this time, since the washing water introduced into the waste collecting part C is dispersed by colliding with the cap 86c, it is possible to prevent the fine dirt from being filtered only to a specific portion of the strainer 86a.

As such, a part of the washing water passing through the washing pump 70 is circulated along the sump 56, the pump case 72, the waste circulation pipe 85, and the waste collecting part C, and is fine. The dirt is filtered out.

Therefore, as the washing water is circulated, fine dirt is filtered out of the washing water, thereby preventing contamination of the dishes.

After the dishes are washed as described above, the drain pump 65 is operated to drain the washing water. As shown in FIG. 6B, as the drain pump 65 is operated, most of the washing water in the washing tank 54 is performed. The water is discharged along the drain pipe 66 through the first filter 82 or the second filter 84 on the sump container 56. At this time, the dirt filtered by the second filter 84 Simultaneously with the washing water is automatically discharged, the washing water of a portion of the inside of the washing tank 54 is passed through the third filter 86 of the sump 56 side and drained along the auxiliary drain pipe 92 and the third filter. The dirt filtered in (86) is also automatically discharged at the same time as the wash water.

Therefore, as the washing water is drained, the dirt filtered by the second filter 84 and the dirt filtered by the third filter 86 are automatically discharged.

The filter device of the dishwasher according to the present invention configured as described above is installed so that a portion of the wash water is filtered through the first and second filters to filter the relatively large dirt and intermediate dirt is formed in one side of the sump collecting waste Since it is circulated to the filter side to filter fine dirt from the circulating washing water to prevent the fine dirt is recycled, there is an advantage that can improve the washing performance of the tableware.

In addition, since the dirt filtered by the second filter and the third filter is automatically discharged at the same time as the washing water when draining the washing water, the user does not need to clean the filter directly, there is an advantage that can eliminate the user's hassle.

1 is a side cross-sectional view showing a dishwasher according to the prior art,

2 is a cross-sectional view showing a filter device of a dishwasher according to the prior art,

3 is a side sectional view showing a dishwasher according to the present invention;

4 is a cross-sectional view showing a filter device of a dishwasher according to the present invention;

5 is an enlarged perspective view of A of FIG. 4;

Figure 6a is a view showing the flow of washing water in the washing water circulation in the dishwasher according to the present invention,

Figure 6b is a view showing the flow of washing water in the washing water drainage in the dishwasher according to the present invention.

<Explanation of symbols on main parts of the drawings>

56: sump 61,62: upper and lower flow path

65: drain pump 66: drain pipe

70: washing pump 72: pump case

74: impeller 76: motor

80: filter device 82: first filter

84: second filter 85: dirt circulation pipe

86; Third filter 92: auxiliary drain pipe

Claims (6)

A water collecting tank installed at a lower portion of the washing tank in which the dishes are washed to collect washing water; A first filter installed inside the sump to filter relatively large dirt from the washing water; A second filter for filtering intermediate dirt from the washing water passing through the first filter; A washing pump installed at one side of the sump to allow the washing water passing through the first and second filters to circulate to the washing tank; A dirt circulation tube installed between the washing pump and the sump to allow a part of the washing water passing through the washing pump to be recycled to the sump; A third filter installed at the sump to form a dirt collecting part and filtering fine dirt from the washing water introduced into the dirt collecting part through the dirt circulation pipe; It comprises a dirt discharge means for discharging at the same time when the fine water collected in the filth collecting unit to wash water drainage, The waste discharging means is a dish washer, which is installed to communicate with the inside of the second filter and the wash water is drained, a drain pump installed in the drain pipe, and an auxiliary drain pipe installed between the drain pipe and the waste collector, characterized in that Filter device. The method of claim 1, And a backflow prevention valve is installed between the waste circulation pipe and the waste collection part to prevent backwash water flowing into the sump. delete delete The method of claim 1, The third filter is a filter device of the dishwasher, characterized in that consisting of a filter net formed with fine holes and a support frame installed below the sump to support the circumference of the filter net. The method of claim 5, The third filter is the filter device of the dishwasher, characterized in that it further comprises a plate-shaped cap installed in the strainer so that the washing water flowing from the dirt circulation pipe hit and evenly sprayed.