KR20040063272A - Filter assembly of dish washer - Google Patents

Abstract

PURPOSE: A filter assembly of a dish washer is provided to improve the reliability of a product by preventing the transmission of the vibration of a washing pump to the overall dish washer and to enhance the performance of a filter by pulverizing the filth contained in the washing water and making the washing waste pass through multiple filters. CONSTITUTION: A filter assembly comprises a grill(82) installed on the upper face of a water collecting vessel(56) and filtering out large-sized filth or broken dishes, a flexible tube(84) installed between the water collecting vessel and a washing pump(70) and damping the vibration generated from the washing pump and transmitted to the water collecting vessel, a pulverizing unit(86) installed between the flexible tube and the washing pump and pulverizing the filth contained in the washing water flowing to the washing pump, and an intermediate filter(84) installed at the inlet of a pump case(72) and filtering filth out of the washing water passing through the pulverizing unit.

Description

Filter unit of dishwasher {Filter assembly of dish washer}

The present invention relates to a filter device of a dishwasher equipped with multiple filters, and in particular, the vibration generated from the washing pump during operation of the washing pump for circulating the washing water is not only prevented from being transmitted to the whole dishwasher, and the dirt contained in the circulating washing water. The present invention relates to a filter device of a dishwasher capable of increasing filter performance by finely crushing the washing water to pass through multiple filters.

1 is a side cross-sectional view showing a dishwasher according to the prior art, Figure 2 is a cross-sectional view showing a 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 (7,8) to be mounted on the table, and the upper and lower shelves (7, 8) connected to the sump (6) and the upper and lower shelves (7, 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 is formed in a cylindrical shape with a hole 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 opened. Holes 34a smaller in size than 32a 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, in recent years, a dish washer equipped with a third filter (not shown) for filtering fine dirt from the wash water passing through the first and second filters 32 and 34 has been developed. While the dirt is filtered and stacked in multiple filters to prevent circulation of the washing water, the user periodically cleans the filter or a nozzle hole (not shown) for cleaning the third filter separately on the lower nozzle 14 side. There is a problem that must be formed.

In addition, since the dishwasher according to the prior art is installed directly connected to the washing pump 20 on one side of the sump (6), when the washing pump 20 is operated, the vibration generated from the washing pump 20 is There is a problem in that the reliability of the product is reduced by being delivered to the washing tank 4 through the sump (6) to the entire dishwasher.

The present invention has been made in order to solve the above problems of the prior art, by pulverizing the dirt so that the washing water is circulated smoothly to discharge the filtered dirt at the same time with the wash water when draining the wash water and vibration generated from the washing pump when the washing pump operation It is an object of the present invention to provide a filter device for a dishwasher that can reduce the noise generated when the product is operated by not being transmitted to the entire dishwasher.

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;

Figure 5a is a view showing the flow of washing water in the washing water circulation in the dishwasher of the present invention,

Figure 5b is a view showing the flow of washing water in the washing water drainage in the dishwasher of 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: grill

84: flexible pipe 85: dirt circulation pipe

86a: filter mounting portion 86b: cutter

86c: cutter axis 88: intermediate filter

89: fine filter 92: auxiliary drain pipe

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 in which the dishes are washed and the sump collecting water, the grill is installed on the upper surface of the sump and filtering the relatively large dirt, and A washing pump installed at one side of the sump to pump the washing water passing through the grill into the washing tank, and installed between the sump and the washing pump so that vibration is not transmitted to the sump when the washing pump is operated. And a pulverizing means installed between the flexible pipe and the flexible pipe and the washing pump to crush dirt contained in the washing water flowing into the cleaning pump through the flexible pipe, and installed at the inlet of the washing pump. It consists of an intermediate filter that filters dirt from the wash water that has passed.

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

3 is a side cross-sectional view of the dishwasher according to the present invention, Figure 4 is a cross-sectional view showing a filter device of the dishwasher according to the present invention.

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. Upper / lower nozzles (63, 64) for spraying the washing water to the side) and installed in communication with the sump (56) at a position spaced apart from the sump (56) to the washing water in the sump (56) A washing pump 70 pumping to upper and lower flow paths 61 and 62, and installed between the sump 56 and the washing pump 70; Filter device 80 to finely crush the dirt in the clean water to discharge the filtered filth at the same time with the wash water when draining the wash water and to prevent the vibration generated during the operation of the cleaning pump 70 is not transmitted to the sump (56) side. It is configured to include.

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 installed so as to communicate with the spaced apart from the sump container 56, the inlet is formed in the axial direction, the pump case 72 and the outlet is formed in the circumferential direction, and the pump case 72 Impeller 74 is built in the pumping wash water, and the motor 76 is connected to the impeller 74 and the rotating shaft (74a) to rotate the impeller 74, the pump case 72 is The upper and lower flow paths 61 and 62 are installed to be connected to each other.

In particular, the filter device 80 is installed on the upper surface of the sump (56), as shown in Figure 4 to filter broken dishes or relatively large dirt, the sump (56) and the washing pump It is installed between the 70 and the flexible pipe 84 so that the vibration is buffered during operation of the washing pump 70 is delivered to the sump container 56, and between the flexible pipe 84 and the washing pump 70 Crushing means 86 for crushing the dirt contained in the washing water flowing into the washing pump 70 through the flexible pipe 84 and installed at the inlet of the pump case 72 is the crushing means ( 86 consists of an intermediate filter 88 for filtering dirt from the wash water passing through.

Here, the flexible pipe 84 not only allows the washing pump 70 to be installed at a position spaced apart from the sump container 56, and the material itself is a soft and soft material to buffer and transmit vibration.

In addition, the crushing means 86 is installed to connect between one side of the flexible pipe 84 and the inlet of the pump case 72, the filter mounting portion (86a) having a space therein, and the filter mounting portion (86a) inside Cutter (86b) is rotatably installed in the cutter 86b for crushing the dirt contained in the wash water, and the rotating shaft (74a) is installed to be connected to the center of the cutter (86b) connected to the motor 76 is formed to extend the cutter shaft ( 86c), but the cutter rotating shaft 86c is installed to penetrate the intermediate filter 88, and is operated at the same time when the washing pump 70 is operated.

Therefore, as the washing water is circulated, the washing water passing through the grill 82 passes through the grinding means 86, so that the dirt contained therein is crushed, so that the intermediate filter 88 filters the crushed dirt. The hole should be relatively small in size.

In addition, the filter device 80 is the cleaning pump 70 and the sump (56) so that the dirt is crushed by the cutter (86b) to filter out the fine dirt that can not be filtered by the intermediate filter (88) The waste circulation pipe 85 installed between the waste water passing through the washing pump 70 and being recycled to the sump 56 and the waste collection 56 inside the grill 82 are collected. Part (C) is further provided to form a fine filter (89) for filtering the fine dirt from the washing water introduced into the waste collection portion (C) through the waste circulation pipe (85).

At this time, a backflow prevention valve 85a, such as a check valve, is installed between the waste circulation pipe 85 and the waste collection part C to prevent the washing water flowing into the sump 56 from flowing back.

Here, the dirt circulation pipe 85 is installed to be connected to the pump case 72 in a direction in which fine dirt is concentrated by centrifugal force in the washing water discharged from the impeller 74 as the impeller 74 is rotated. .

Therefore, as the washing water is circulated, dirt contained in the washing water passing through the grill 82 is crushed by the cutter 86b and not only filtered by the intermediate filter 88, but also by the fine filter 89. Lose.

In addition, the filter device 80 further includes dirt discharge means so that the dirt filtered by the intermediate filter 88 or the fine filter 89 may be discharged simultaneously with the wash water when the wash water is drained as the wash water is circulated.

Specifically, the waste discharge means is installed so as to communicate with the filter mounting portion (86a) is a drain pipe 66 for guiding the dirt caught in the intermediate filter 88 to be discharged at the same time with the wash water when the wash water drainage, and the drain pipe 66 Drain pump (65) installed at the outlet side of the drain to drain the washing water, and installed between the waste collection portion (C) and the drain pipe (66), the dirt caught in the fine filter (89) when the wash water is drained and wash water and It consists of an auxiliary drain pipe 92 to guide the discharge at the same time.

In this case, the drainage pump 65 is operated when draining the washing water according to the dish washing order as well as the waste pump so that the wastes can be drained at the same time with the washing water when the fine dirt is stacked more than a predetermined time. Actuated according to the signal of the pressure sensor installed on the inlet side of (65).

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

5A and 5B are views illustrating the flow of the washing water when the washing water is circulated and the washing water drainage in the dish washing machine of the present invention, respectively.

First, when the dishwasher is operated, the water supply valve is opened and the washing water is supplied into 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. 5A, as the impeller 74 is rotated, the washing water on the washing tank 54 passes through the grill 82 to filter broken dishes or relatively large dirt, etc. Inflow to the filter 56 flows toward the filter mounting portion 86a along the flexible pipe 84.

Therefore, the washing water introduced into the filter mounting portion 86a is crushed in the dirt contained therein as the cutter 86b is rotated, the washing water is flowed to the intermediate filter 88 side, the intermediate dirt contained therein is The intermediate filter 88 is filtered, and fine dirt flows in the axial direction of the impeller 74 together with the washing water and is discharged in the radial direction.

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

Thus, most of the washing water is the sump 56, the flexible pipe 84, the filter mounting portion (86a), the pump case 72, the upper / lower flow passage (61, 62), the upper / lower It is circulated along the nozzles 63 and 64 and the washing tank 54 to wash dishes.

In addition, a part of the washing water passing through the impeller 74 is circulated through the waste circulation pipe 85 to the waste collecting part C side, and the washing water introduced into the waste collecting part C side is the fine filter. Fine dirt is filtered while passing through 89, and then recycled to the sump 56 side.

As such, a part of the washing water is circulated along the sump 56, the pump case 72, the waste circulation pipe 85, and the waste collection part C, and fine dirt contained therein is filtered out.

On the other hand, when the washing pump 70 is operated because the vibration generated in the washing pump 70 is buffered while passing through the flexible pipe 84 is transferred to the sump container 56, the vibration in the dishwasher operation It is possible to reduce the noise generated by.

After the dishes are washed as described above, the drainage pump 65 is operated to drain the washing water. When the drainage pump 65 is operated as shown in FIG. 5B, the intermediate dirt filtered by the intermediate filter 88 is filtered. The water is discharged to the outside through the drain pipe 66 and the drain pump 65 at the same time as the washing water, and the dirt filtered by the fine filter 89 or the dirt collecting part C is simultaneously washed with the water. It is discharged to the outside through the auxiliary drain pipe 92, the drain pipe 66, and the drain pump 65.

Therefore, at the same time as the washing water is drained, the dirt filtered by the intermediate filter 88 or the fine filter 89 is automatically discharged, and the intermediate filter 88 and the fine filter 89 are washed.

In the filter device of the dishwasher according to the present invention configured as described above, as the washing water is circulated, the washing water is sequentially passed through the grill, the intermediate peter, and the fine filter, and is included in the washing water by a cutter installed between the grill and the intermediate filter. Since the dirt is crushed and caught in the intermediate filter and the fine filter, respectively, the washing water can be smoothly circulated, and the fine dirt can be prevented from being recycled, thereby improving the washing performance of the tableware.

In addition, when the drain pump is operated, dirt filtered out to the intermediate filter by the water flow and dirt filtered out to the fine filter are discharged along the drain pipe and the auxiliary drain pipe at the same time as the washing water, so that the user does not need to clean the filter separately. There is an advantage that can eliminate the hassle of.

In addition, since the washing pump is installed to be connected by the sump and the flexible pipe, even if the washing pump is operated, vibration generated in the washing pump is transmitted to the entire dishwasher through the sump to prevent noise from being generated. There is an advantage that can increase the reliability of the product.

Claims (6)

A collecting basin where washing water is collected by being installed at the bottom of a washing tank where dishes are washed A grill installed on an upper surface of the sump and filtering relatively large dirt; A washing pump installed at one side of the sump and pumping the washing water passing through the grill to circulate into the washing tank; A flexible pipe installed between the sump and the washing pump to prevent vibration from being transferred to the sump when the washing pump is operated; A crushing means installed between the flexible pipe and the washing pump to grind dirt contained in the washing water flowing into the washing pump through the flexible pipe; And an intermediate filter installed at the inlet of the washing pump to filter dirt from the washing water passing through the grinding means. The method of claim 1, The grinding means includes a filter mounting portion formed between the flexible pipe and the washing pump, a cutter rotatably installed on the filter mounting portion, and a cutter rotating shaft connected to a motor installed to be connected to a center of the cutter to drive an impeller of the washing pump. Filter device of the dishwasher, characterized in that consisting of. The method according to claim 1 or 2, The filter device of the dishwasher is 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 unit in the sump inside the intermediate filter. It is installed to form a filter device of the dishwasher, characterized in that it further comprises a fine filter for filtering the fine dirt from the washing water introduced into the waste collector through the waste circulation pipe. The method of claim 3, wherein 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. The method of claim 3, wherein The filter device of the dishwasher is a filter device of the dishwasher, characterized in that further comprises a waste discharge means for discharging at the same time when the waste water filtered by the intermediate filter or fine filter when draining the wash water. The method of claim 5, wherein The waste discharging means is a filter device of the dishwasher, characterized in that consisting of a drain pipe installed to communicate with the filter mounting portion, a drain pump installed on the outlet side of the drain pipe, and an auxiliary drain pipe provided between the waste collection portion and the drain pipe.