KR100686096B1 - dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to improve the pumping performance of the washing water, to reduce the height of the sump, and to provide a dishwasher capable of minimizing the residue of food waste on the various components during the drain stroke .

To this end, the present invention, the sump 110, the washing water is received; A washing pump 120 for pumping the washing water of the sump; Housing assemblies (130, 140, 150) having flow paths for guiding the pumped wash water to the wash arms; A cover 160 disposed to cover an upper end of the sump; A filter device (170) disposed in the sump through the cover and filtering the washing water falling on the cover and then flowing into the sump; In addition, it is in communication with the filter device, and provides a dishwasher comprising a drain pump 180 for discharging the waste water filtered in the filter device and the washing water in the sump to the outside during the drain stroke.

Dishwasher, Sump, Filter Unit

Description

Dishwasher {dish washer}

1 is a block diagram showing a schematic configuration of a conventional dish washer.

Figure 2 is an exploded perspective view showing a drive unit of the dish washing machine of Figure 1;

3 is a top view illustrating a flow path structure of the filter housing of FIG. 2.

4 is a cross-sectional view showing the flow of the washing water during the washing stroke in the drive unit of FIG.

Figure 5a is a top view showing the flow of the washing water in the washing stroke in the filter housing of Figure 2;

Figure 5b is a top view showing the flow of the wash water during the drain stroke in the filter housing of Figure 2;

Figure 6 is an exploded perspective view showing the configuration of the dishwasher according to the present invention.

Figure 7 is a side sectional view showing a flow state of the washing water in the washing stroke of the dishwasher of Figure 6;

Figure 8 is a side cross-sectional view showing a flow state of the washing water in the drain stroke of the dishwasher of Figure 6;

Explanation of symbols on the main parts of the drawings

110: sump 111: dirt receiving chamber

112: discharge passage 120: washing pump

130: lower housing 140: upper housing

150: housing for connection 160: cover

116: filter ball 170: filter device

171: lower filter 176: upper filter

180: drain pump 190: flow path control valve

The present invention relates to a dishwasher, and more particularly, to provide a dishwasher capable of improving washing performance and simplifying an assembly process.

A general dish washer is a device that sprays and washes dishes and washes and dries and / or sterilizes the dishes.

Hereinafter, a conventional dishwasher will be described with reference to the accompanying drawings.

1 is a block diagram showing a schematic configuration of a conventional dish washer, Figure 2 is an exploded perspective view showing a drive unit of the dish washing machine of Figure 1, Figure 3 is a top view showing the flow path structure of the filter housing of Figure 2, 4 is a cross-sectional view showing the flow of the washing water during the washing stroke in the drive unit of Figure 2, Figure 5a is a top view showing the flow of the washing water during the washing stroke in the filter housing of Figure 2, Figure 5b is a drain stroke in the filter housing of Figure 2 Top view showing the flow of wash water.

A schematic configuration of a conventional dish washing machine will be described with reference to FIG. 1.

The dishwasher is provided with upper and lower washing arms 4 and 5, upper and lower racks 6 and 7, and a driving unit 10 inside the tub 1.

The drive unit 10 is connected to the upper and lower connecting pipes (2, 3) for pumping the washing water and the drain hose (9) for draining the washing water, and the upper / lower connecting pipes (2, 3) Lower wash arms 4 and 5 are connected. An upper rack 6 is installed above the upper washing arm 4, and a lower rack 7 is installed above the lower washing arm 5.

The upper and lower washing arms 4 and 6 are rotatably installed on the upper side of the driving unit 10. At this time, each of the washing arms is formed with a spray hole so as to spray the washing water to the rack. In addition, a separate injection hole is formed in the lower washing arm so as to drop food waste blocking the filter of the driving unit.

Referring to Figure 2, it will be described in detail with respect to the drive unit.

The driving unit 10 includes a sump 20 to receive the washing water, a heater 30 installed on the sump to warm the washing water, washing pumps 41 and 42 installed on the sump to pump the washing water, and the sump. Drain pumps (51, 52) installed in the drainage to wash water and comprises a filtering means for guiding some of the pumped wash water to the wash arm, and filtering the rest.

The sump 20 is formed with a wash water accommodating portion 21, which is a space capable of substantially accommodating washing water, and a drain chamber 22 is formed to be partitioned from the accommodating portion. In addition, a flow path control device 25 is installed outside the washing water container, and a flow path control valve 26 is axially coupled to the flow path control device.

The washing pump includes a washing motor 41 installed in the lower part of the sump 20 to generate a driving force, and an impeller 42 installed in the filtering means to pump the washing water. At this time, the disposer 45 for crushing the food debris is rotated to the shaft of the washing pump, and the upper side of the disposer 45 has a predetermined mesh to filter the large food debris. Screen 46 is disposed.

The drain pump is also installed in the sump chamber 22 of the sump. This drain pump is composed of a drain motor 51 and an impeller 52.

The filtering means may include a pump housing 60 having a space in which the impeller 42 is installed, a filter housing 70 installed to cover the upper side of the pump housing, and an upper side of the filter housing and the sump. The cover 80 is configured. In this case, the pump housing 60 is disposed on the lower surface of the filter housing 70, and the cover 80 is disposed on the upper surface of the filter housing.

A dirt chamber 75 or the like is formed in the filter housing, and a drain 75a is formed in the dirt chamber so as to communicate with the drain chamber 22. At this time, the drain portion 75a protrudes a predetermined length below the dirt chamber 75 and is inserted into the drain chamber 22. This filter housing will be described in detail below.

A filter 81 is installed in the cover 80 to correspond to the dirt chamber 75 of the filter housing 60, and a plurality of recovery holes 82 are formed outside the filter 81. The recovery hole 82 communicates with the sump 20.

Referring to FIG. 3, the filter housing will be described.

The filter housing 70 includes a washing water inlet 72 formed to introduce the washing water pumped from the impeller 42, main passages 73a and 73b and a sampling passage 74 connected to the washing water inlet, and A dirt chamber 75 or the like connected to the sampling flow path is formed. At this time, the drain portion 75a of the waste chamber is provided with an opening / closing valve so as to discharge the washing water and food waste of the waste chamber to the drainage chamber 22 (see FIG. 2) during the drainage stroke.

In addition, a flow path control valve 26 is rotatably seated on the washing water inlet 72 of the filter housing 70 so as to open and close the main flow path, and the flow path control valve is provided in the sump 20. 2) is axially coupled. At this time, the opening and closing rib 26a is formed at the edge of the flow path control valve 26 to open and close the main flow path.

Referring to the operation of the dishwasher configured as described above are as follows.

The dishwasher washes the dishes while sequentially or selectively performing pre-washing, main washing, rinsing, heating rinsing and drying. A drain stroke is performed between each of these strokes. Hereinafter, the main washing and draining operations will be described.

When the main washing stroke is started, the impeller 42 is rotated as the washing motor is rotated. This impeller pumps the wash water (including detergent) of the sump 20 to the wash water inlet 72 (see FIG. 3) of the pump housing 60 as shown in FIG. 4.

At this time, as the flow path control device 25 is rotated, the flow path control valve 26 simultaneously opens the two main flow paths 73a and 73b as shown in FIG. 5A, or is not illustrated but is optional. To open. Accordingly, some of the washing water of the washing water inlet 72 is introduced into the upper and / or washing arms 4 and 6 through the main flow passages 73a and 73b, and the remaining portion is the waste chamber through the sampling passage 74. Flows into (75).

At this time, the flow path control valve 26 is open at the same time or alternately open the two main flow paths (73a, 73b) so that the washing water is supplied to both the upper / lower wash arms.

At the same time, a part of the washing water always flows into the sampling flow path 74 regardless of which main flow path the flow path control valve 26 opens.

The washing water of the sampling flow path 74 directly flows into the waste chamber 75, and the washing water overflows through the filter 81 (see FIG. 2) located above the waste chamber 75. At this time, the filter 81 filters out foreign substances contained in the washing water.

The filtered washing water and the washing water separated from the upper and lower washing arms flow back into the sump 20 through the recovery hole 82 of the cover 80.

This filtered wash water seems to be partially filtered in a short time, but almost all wash water is filtered out during the main washing process.

After this wash stroke is completed, the drain stroke begins.

When the drain stroke is started, the drain pumps 51 and 52 are operated. At this time, the washing water and food waste of the sump 20 to the suction power of the drain pump is introduced into the drain pump (51, 52). At the same time, the washing water and food waste in the dirt chamber 75 are also introduced into the drain pumps 51 and 52 through the drain portion 75a as shown in FIG. 5B. The washing water and food waste introduced into the drain pumps 51 and 52 are drained to the outside through the drain hose 9 (see FIG. 1).

However, the conventional dishwasher has the following problems.

First, since only a part of the pumped washing water is sprayed through the washing arm, there is a problem that the washing performance is lowered as the spraying amount of the washing water for washing the dishes is substantially reduced. In addition, since the washing water must be pumped in consideration of the amount of the washing water circulated through the sampling flow path, there is a problem in that the capacity of the washing pump should be increased to maintain the injection amount of the washing water.

Second, both the amount of washing water that can be sufficiently sprayed to the tableware through the washing arm, the amount of washing water that is filtered while being circulated through the sampling flow path and the amount of washing water that is sprayed to the filter unit from the lower washing arm to drop food waste Since it should be considered, there was a problem that the amount of wash water required during the wash administration substantially increased significantly.

Third, since the wash water pumped from the sump flows directly into the waste chamber through the sampling flow path, there is a problem in that the filter part of the cover is clogged as a large amount of waste flows into the waste chamber. In addition, when the filter part is clogged, since the hydraulic pressure acts largely on the dirt chamber, the wash water of the dirt chamber is drained through the drainage hose, and the wash water is wasted, and fatigue accumulates in the filter part and deforms.

Fourth, when the wash water is unnecessarily drained, it is necessary to replenish the wash water and to heat the wash water supplemented by the heater during the heat washing, thereby increasing the amount and power consumption of the wash water.

Fifth, since the dish washing machine must separately form a sampling passage and a dirt chamber in order to filter the washing water, there is a problem in that the washing water passage is complicated. In addition, as the flow path becomes complicated, the pumping pressure of the washing water is significantly reduced, and as a result, there is a problem that a larger capacity washing pump must be applied.

Sixth, the washing pump is installed in an upright driving manner, a disposer is installed on the shaft of the washing pump, and a dirt chamber is installed on the upper side of the pump housing, so that the structure of the driving unit itself becomes complicated. There was a problem that the height is significantly increased, or the space inside the sump is bound to be reduced. Furthermore, as the size of the driving unit increases, there is a problem in that the capacity of the tub is relatively reduced.

Seventh, since the dish washer has a complicated flow path, and food waste remains in the dirt chamber or the filter during the drainage, the remaining food waste has a problem of decaying in the dishwasher as time passes. Further, when food residues remain on various flow paths such as a dirt chamber, there was a problem that it is inconvenient to remove them.

In order to solve the above-mentioned problems, an object of the present invention is to allow all pumped wash water to be sprayed into the dishware through the wash arm, thereby improving the washing performance, reducing the capacity of the washing pump, and substantially requiring the washing stroke. It is to provide a dishwasher in which the amount of washing water is significantly reduced.

In addition, another object of the present invention is to provide a dishwasher capable of preventing the washing water from draining unnecessarily, thereby reducing the amount and power consumption of the washing water.

In addition, another object of the present invention is to simplify the wash water flow path by eliminating a separate sampling flow path and a dirt chamber to filter the wash water, thereby reducing the flow resistance and significantly increasing the pumping pressure of the wash water. To provide a dishwasher that can be applied to a smaller capacity wash pump.

Further, another object of the present invention is to eliminate the disposer and screen, to simplify the structure of the drive unit itself, to significantly reduce the height of the drive unit, to increase the space inside the sump, and to reduce the drive unit To provide a dishwasher that can increase the capacity of the tub relatively.

Still another object of the present invention is to provide a dish washer that minimizes food residues remaining in the sump during the drainage stroke, and which can easily clean the filtered food residues.

The dishwasher according to the present invention for achieving the above object, the sump in which the washing water is accommodated; A washing pump installed to pump the washing water of the sump and drive upright; A housing assembly installed at one side of the sump and having a flow path for guiding the washing water pumped from the washing pump to a washing arm; A filter device installed at the other side of the sump to filter the washing water after washing to flow into the housing assembly; And it is in communication with the filter device, characterized in that it comprises a drain pump for discharging the dirt filtered by the filter device and the washing water in the sump to the outside during the drain stroke.
In addition, the housing assembly and the filter device are arranged in substantially parallel in the sump.
The apparatus may further include a cover covering an upper end of the sump, and the filter device is disposed in the sump through the cover to filter the washing water dropped on the cover.
In addition, it is provided on one side of the sump is characterized in that it further comprises a waste accommodating chamber is stored in the filtration filtered by the filter device and in communication with the drain pump.
In addition, the dirt receiving chamber is characterized in that formed inclined at a predetermined angle so that the stored dirt easily flows to the drain pump side.
In addition, the filter device is characterized in that it comprises an opening that is formed in the lower end and in communication with each other in combination with the dirt receiving chamber.
In addition, it characterized in that it further comprises a drain passage to communicate the waste receiving chamber and the drain pump.
The apparatus may further include a drainage chamber provided on the sump and mounted with the drainage pump so that the drainage chamber and the waste accommodation chamber communicate with each other by the drainage flow path.
In addition, the filter device is installed through the cover and the upper filter for filtering a large dirt in the wash water dropped on the cover, respectively coupled to the upper filter and the dirt receiving chamber, the lower end is opened, the upper filter Characterized in that it comprises a lower filter for filtering the dirt passed through again.
In addition, at least one of the upper filter and the lower filter is characterized in that the detachably installed on the cover.
The upper filter may be installed to protrude a predetermined height from an upper surface of the cover.
In addition, the cover is characterized in that it is installed to be inclined at a predetermined angle so that the washing water flows easily to the filter device side.
In addition, the cover is characterized in that it comprises a plurality of filter holes for filtering the wash water dropped to the cover.
In addition, the filter holes are characterized in that they are disposed in the portion avoiding the housing assembly.
The housing assembly may further include a pump chamber in which the washing water passing through the filter device is pumped by the washing pump, a flow path control chamber communicating with the pump chamber and provided with a flow path control valve, and guiding the washing water in the flow path control chamber to each washing arm. It characterized in that it comprises a main flow path.
The pump chamber and the flow path control chamber may be arranged on the same plane.
The main flow path may be disposed above the pump chamber and the flow path control chamber.
The housing assembly may further include a lower housing having the pump chamber and the flow path control chamber, and an upper housing coupled to cover the upper side of the lower housing and having the main flow path.
In addition, it is coupled to cover the upper side of the upper housing, characterized in that it comprises a housing for the connection coupled to the connection pipe connected to the cleaning arm.
The flow path control valve may include a control motor, a rotation shaft connected to the control motor, and a flow path opening and closing plate formed at an upper end of the rotation shaft to rotate together with the rotation shaft to open and close the main flow path. It is characterized by.
The washing pump further includes a washing motor generating a rotational force, a shaft rotated by the washing motor and disposed substantially vertically in the housing assembly, and installed on the shaft and disposed in the pump chamber to pump washing water. It characterized in that it comprises an impeller.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

Therefore, according to the present invention, it is possible to improve the washing performance, to reduce the capacity of the washing pump, to significantly reduce the amount of washing water substantially required in the washing stroke, to reduce the amount of consumption and the power consumption of the washing water, and the flow resistance To increase the pumping pressure of the washing water, to simplify the structure of the driving unit itself, to significantly reduce the height of the driving unit, to increase the space inside the sump, and to allow food waste to remain in the sump during the drain stroke. It can be minimized.

With reference to the accompanying drawings, a preferred embodiment according to the present invention that can specifically realize the above object will be described.

Figure 6 is an exploded perspective view showing the configuration of the dishwasher according to the present invention, Figure 7 is a side cross-sectional view showing the flow of the washing water during the washing stroke of the dishwasher of Figure 6, Figure 8 is a drain stroke of the dishwasher of Figure 6 Is a side cross-sectional view showing the flow of washing water.

Referring to Figure 6, it will be described an embodiment of the dishwasher according to the present invention.

The dishwasher includes a housing assembly having a sump 110 in which washing water is received, a washing pump 120 for pumping the washing water of the sump 110, and flow paths 141 and 142 for guiding the pumped washing water to the washing arm. 130, 140 and 150, the cover 160 disposed to cover the upper end of the sump 110, the cover 160 penetrates the cover 160 and is disposed in the sump 110, and then the washing water dropped to the cover 160 is filtered. A filter device 170 which flows into the sump 110 and a drain pump 180 which communicates with the filter device 170 and discharges the dirt filtered by the filter device and the washing water in the sump 110 to the outside during the drainage stroke. It is configured to include.

At this time, it is preferable that a heater for warming the washing water is installed inside the sump 110. In FIG. 6, illustration of such a heater is omitted. Of course, it is also understood that the heater may be installed on the bottom surface of the tub.

The sump 110 is provided with a dirt accommodating chamber 111 in which dirt filtered by the filter device 170 is stored and communicated with the drain pump 180. At this time, the dirt receiving chamber 111 is preferably installed on the bottom surface of the sump (110). In addition, the dirt receiving chamber 111 is more preferably formed to be inclined (α) toward the drain pump 180 side. This is to allow the waste collected in the waste accommodating chamber 111 to be easily discharged to the drain pump 180.

In addition, the discharge passage 112 is formed to communicate the waste accommodation chamber 111 with the drain pump 180. At this time, the dirt receiving chamber 111 and the drainage chamber 113 is preferably communicated by the discharge flow path (112).

In addition, a drain chamber 113 is formed in the sump 110 to mount the drain pump 180. The drain chamber 113 is provided with a space in which the impeller is disposed and a space in which dirt is sucked.

The washing pump 120 is configured to include a washing motor 121 for generating a driving force, and an impeller 122 axially coupled to the washing motor 121. At this time, the cleaning motor 121 is disposed in an upright drive type in which the shaft is approximately vertical. In addition, the drain pump 180 includes a drain motor (not shown) and an impeller (not shown). This drain pump 180 is arranged in a horizontal drive type, the shaft is approximately horizontal.

The housing assembly may include a pump chamber 131 in which an impeller 122 of the washing pump 120 is disposed, and a flow path control chamber 132 in communication with the pump chamber 131 and in which a flow path control valve 190 is disposed. And main flow passages 141 and 142 for guiding the washing water in the flow path control chamber 132 to the washing arms.

At this time, the pump chamber 131 and the flow path control chamber 132 is preferably disposed on the same plane. This is to reduce the height of the housing assembly (130, 140, 150), and to increase the internal space of the sump (110). In addition, the main passages 141 and 142 may be disposed above the pump chamber 131 and the flow path control chamber 132. This is to reduce the width of the housing assembly.

An example of such a housing assembly will be described.

The housing assembly is coupled to cover the lower housing 130 having the pump chamber 131 and the flow path control chamber 132 and the upper side of the lower housing 130, and the upper housing having the main flow paths 141 and 142. 140). In this case, the lower housing 130 and the upper housing 140 may be formed as a separate member, as shown in Figure 6, or may be formed integrally, although not shown.

In this case, the housing assembly is coupled to cover the upper side of the upper housing 140, it is preferable to further comprise a connecting housing 150 is coupled to the connection pipe (not shown) connected to the cleaning arm. The coupling housing 150 is formed with a coupling portion to be coupled to the connection pipe.

In addition, the cover 160 covering the sump 110 may be installed to be inclined toward the filter device 170 (β: see FIG. 7). This is to allow the washing water and dirt dropped on the cover 160 to easily flow to the filter device 170.

In this case, it is preferable that a plurality of filter holes 161 are formed in the cover 160 so that some of the separated washing water is filtered and flows directly into the tub. It is more preferable that the filter holes 161 are disposed only at a portion of the housing assembly 130, 140, or 150. This is to minimize contamination of the outer surface of the housing assembly by the contaminated washing water.

On the other hand, the lower end of the filter device 170 is formed to be open. At this time, the opened lower end of the filter device 170 is coupled to the waste accommodation chamber 111. At this time, the lower end of the filter device 170 and the bottom surface of the dirt receiving chamber 111 is preferably spaced apart from the predetermined interval. For example, the stepped portion 111a is formed at the upper end of the waste accommodating chamber 111 so that the opened lower end of the filter device 170 is supported by the stepped portion 111a. In addition, the discharge passage 112 is disposed below the stepped portion 111a of the waste accommodation chamber 111. Therefore, the dirt in the dirt accommodating chamber 111 is discharged to the drain chamber 113 through the discharge flow path 112 without interference of the filter device 170.

The filter device 170 may include an upper filter 176 that passes through the cover 160 and passes washing water and dirt dropped from the cover 160, and the upper filter 176 and the dirt accommodating chamber 111. And a lower filter 171 which is coupled to the lower end and which filters the dirt in the washing water.

The upper filter 176 or / and the lower filter 171 is preferably installed detachably to the cover 160. The upper filter 176 filters large food debris, and the lower filter 171 filters small food debris that cannot be filtered by the upper filter 176.

In this case, the upper filter 176 is preferably installed to protrude a predetermined height from the upper surface of the cover 160. This is to make it easy for the user to grasp and remove the upper filter 176. Of course, the upper filter 176 does not necessarily need to be disposed to protrude on the top surface of the cover 160 as long as the user can easily grasp it.

In addition, the flow path control valve 190, the rotary shaft 191 coupled to the shaft of the control motor 200, disposed on the upper end of the rotary shaft 191, is formed in a plate shape as a whole, as the main flow path ( It is configured to include a flow path opening and closing plate 192 is formed with a communication hole (192a) for opening and closing the 141, 142. The flow path control valve 190 may be formed in a plate shape because the main flow paths 141 and 142 are disposed above. In addition, the flow path control valve 190 has a structure in which the pumping pressure of the washing pump 120 acts on the upper side, so that the pumping pressure is squeezed to the upper housing 140 to be stably supported without shaking.

The operation of the dishwasher according to the present invention configured as described above will be described. The dishwasher washes the dishes while sequentially or selectively performing pre-washing, main washing, rinsing, heating rinsing and drying. A drain stroke is performed between each of these strokes. Hereinafter, the main washing and draining operations will be described.

Referring to FIG. 7, the washing stroke of the dish washing machine will be described.

When the impeller 122 rotates as the washing motor 121 operates, the washing water of the sump 110 flows into the pump chamber 131 and the flow path control chamber 132.

At this time, the flow path control valve 190 rotates to communicate the main flow paths (141, 142) and the flow path control chamber 132. Here, the flow path control valve 190 may selectively open only one main flow path (141, 142) or open two main flow paths (141, 142) at the same time. In addition, each main flow path can be opened and closed alternately.

When the main flow passages 141 and 142 are opened, the washing water of the flow path control chamber 132 is sent along the main flow passages 141 and 142 to the corresponding washing arms and sprayed.

At this time, since there is no separate sampling flow path unlike in the prior art, all the pumped wash water is sent to the wash arm. Therefore, the amount of washing water sprayed on the dishware is increased, and since substantially all pumped washing water is used only to wash the dishware, a smaller capacity washing pump 120 can be applied, and the amount of washing water is also significantly reduced. do. In addition, unlike the related art, since the wash water flow path is simplified, the resistance of the flow path of the wash water is reduced, and consequently, the pumping capacity can be improved even with the washing pump 120 having the same capacity.

The washing water sprayed from the washing arm falls into the cover 160 after washing the dishes. At this time, since the cover 160 is inclined toward the filter device 170, the washing water and the dirt dropped on the cover 160 flow into the upper filter 176. In addition, some of the washing water flows directly into the sump 110 through the filter hole 161 of the cover 160.

Large dirt is filtered in the upper filter 176, and unfiltered dirt in the upper filter 176 is filtered in the lower filter 171. As a result, only the filtered washing water flows into the sump 110.

Here, unlike the prior art, since it is not necessary to periodically wash the filter device 170 during the washing stroke, even if a smaller amount of washing water is pumped than before, the same injection amount can be obtained, and the use amount of the washing water can be reduced.

As the washing process proceeds for a predetermined time, the dishes are washed while the washing water is filtered. At this time, the food waste collected in the filter device 170 is gradually increased over time. When this wash stroke is completed, the drain stroke begins.

Referring to Figure 8, it will be described with respect to the drainage stroke of the dishwasher.

When the drain pump 180 is operated, the wash water of the sump 110 is introduced into the waste accommodating chamber 111 through the lower filter 171 by the suction force of the drain pump 180, and the washing water is supplied to the waste accommodating chamber ( It is introduced into the drainage chamber 113 together with the dirt collected in the 111. At this time, since the waste accommodating chamber 111 is inclined toward the drain chamber 113, dirt is smoothly introduced into the drain chamber 113. Subsequently, the dirt and the washing water of the drain chamber 113 are discharged to the outside through the drain hole and the drain hose of the drain chamber 113.

Here, since the drainage section (the flow path between the waste accommodation chamber 111 and the drainage chamber 113) is significantly shorter than in the related art, dirt is hardly left in this drainage section.

By this action, the waste collected in the waste accommodating chamber 111 during the drainage stroke is cleanly discharged to the outside.

The effect of the dish washing machine according to the present invention described above will be described.

First, according to the present invention, all the pumped wash water is sprayed to the dishware through the wash arm, which improves the washing performance, reduces the capacity of the washing pump, and significantly reduces the amount of washing water substantially required in the washing stroke. It works.

Secondly, according to the present invention, the washing water is prevented from being unnecessarily drained, thereby reducing the amount of consumption and power consumption of the washing water.

Third, according to the present invention, by simplifying the wash water flow path by eliminating the separate sampling flow path and the dirt chamber for filtering the wash water, the flow path resistance is reduced, and the pumping pressure of the wash water is increased significantly, resulting in a smaller capacity. It is effective to apply the washing pump.

Fourth, according to the present invention, by eliminating the disposer and the screen, the structure of the drive unit itself is simplified, the height of the drive unit can be significantly reduced, the space inside the sump can be increased, and the drive unit is low and small. Therefore, there is an effect that can increase the capacity of the tub relatively.

Fifth, according to the present invention, there is an effect of minimizing food residues remaining in the sump during the drainage stroke and easily cleaning the filtered food residues.

Claims (21)

Sump containing washing water; A washing pump installed to pump the washing water of the sump and drive upright; A housing assembly installed at one side of the sump and having a flow path for guiding the washing water pumped from the washing pump to a washing arm; A filter device installed at the other side of the sump to filter the washing water after washing to flow into the housing assembly; And And a drain pump communicating with the filter device and discharging the waste water filtered by the filter device and the wash water in the sump to the outside during a drain stroke. The method of claim 1, And the housing assembly and the filter arrangement arranged substantially parallel in the sump. The method according to claim 1 or 2, Further comprising a cover covering the top of the sump, And the filter device is disposed in the sump through the cover to filter the washing water dropped on the cover. The method according to claim 1 or 2, And a dirt receiving chamber provided at one side of the sump, in which the dirt filtered by the filter device is stored and in communication with the drainage pump. The method of claim 4, wherein And the waste accommodating chamber is formed to be inclined at an angle so that stored soil easily flows to the drain pump side. The method of claim 4, wherein The filter device is formed in the lower end of the dishwasher, characterized in that it comprises an opening that is in communication with each other in combination with the dirt receiving chamber. The method of claim 4, wherein And a drain passage to communicate the waste accommodation chamber with the drain pump. The method of claim 7, wherein Further comprising a drain chamber provided in the sump is mounted to the drain pump, And the drain chamber and the waste accommodation chamber communicate with each other by the drain channel. The filter device according to any one of claims 3 to 5, wherein An upper filter installed through the cover and filtering large dirt in the washing water dropped on the cover; And a lower filter coupled to the upper filter and the waste receiving chamber, respectively, and having a lower end thereof and filtering the dirt passing through the upper filter again. The method of claim 9, At least one of the upper filter and the lower filter is detachably installed on the cover. The method of claim 10, And the upper filter is installed to protrude a predetermined height from an upper surface of the cover. The method of claim 2, The cover is dishwasher, characterized in that the inclined at a predetermined angle so that the washing water flows easily to the filter device side. The method of claim 12, wherein the cover, And a plurality of filter holes to filter the washing water falling on the cover. The method of claim 13, And the filter balls are disposed in a portion avoiding the housing assembly. The method of claim 1, wherein the housing assembly, A pump chamber in which the washing water passing through the filter device is pumped by the washing pump; A flow path control chamber communicating with the pump chamber and provided with a flow path control valve; And a main flow path for guiding the washing water in the flow path control room to each of the cleaning arms. The method of claim 15, And the pump chamber and the flow path control chamber are arranged on the same plane. The method of claim 16, And the main flow path is disposed above the pump chamber and the flow path control chamber. The method according to any one of claims 15 to 17, wherein the housing assembly, A lower housing having the pump chamber and the flow path control chamber; And an upper housing coupled to cover the upper side of the lower housing and having the main flow path. The method of claim 18, And a connection housing coupled to cover the upper side of the upper housing and coupled to a connection pipe connected to the washing arm. The method of claim 15, wherein the flow path control valve, With control motor, A rotating shaft connected to the control motor; And a flow path opening and closing plate disposed at an upper end of the rotation shaft and having a communication hole for rotating with the rotation shaft and opening and closing the main flow path. The method of claim 15, wherein the washing pump, A washing motor that generates rotational force, A shaft rotated by the cleaning motor and disposed substantially vertically within the housing assembly; And an impeller installed on the shaft and disposed in the pump chamber to pump the washing water.

Images