KR100800001B1 - dish washer - Google Patents

Abstract

The present invention improves the pumping performance of the wash water and reduces the height of the driving unit, and provides a dishwasher capable of minimizing the residue of food waste on various components during drainage.

To this end, the present invention, the sump is received washing water; An impeller generating a pumping force for the washing water in the sump; A washing motor that imparts rotational force to the impeller and is disposed in an upright drive type in which the shaft is approximately vertical; A housing assembly having a flow path for guiding the pumped wash water to the wash arm; A cover disposed to cover an upper end of the sump; The dishwasher is disposed in the sump through the cover, and includes a filter device for filtering the washing water falling on the cover and then introducing the washing water into the sump.

Dishwasher, sump, filter

Description

Dishwasher {dish washer}

1 is a view schematically showing the overall configuration of a conventional dish washer

2 is an exploded perspective view showing in detail the driving unit of the dish washing machine of FIG.

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 washing water in 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 cross-sectional view showing the 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 the flow of the washing water in the drain stroke of the dishwasher of Figure 6

9A is a detailed perspective view of the housing assembly of FIG. 6.

9B is an exploded perspective view of FIG. 9A

10A to 10C are plan views illustrating a main flow path control state for each rotation position of the flow control valve in a state where the connection housing is removed;

FIG. 11 is a reference view of FIG. 10A and is a plan view illustrating a state in which the upper housing is removed in FIG. 10A.

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 schematic view showing an overall configuration of a conventional dishwasher, FIG. 2 is an exploded perspective view showing the driving unit of the dishwasher of FIG. 1 in detail, FIG. 3 is a top view showing the flow path structure of the filter housing of FIG. 4 is a cross-sectional view showing the flow of the washing water during the washing stroke in the drive unit of FIG.

And, 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 top view showing the flow of the washing water during the drain stroke in the filter housing of Figure 2.

First, a schematic configuration of a conventional dish washer 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, a driving unit 10, and the like 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.

Next, the driving unit structure of the dishwasher will be described in detail with reference to FIG. 2.

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. And a drainage pump (51, 52) installed in the drain to wash water, and filtering means for guiding some of the pumped wash water to the wash arms (4,5; see FIG. 1) 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 collection chamber 75 or the like is formed in the filter housing, and a drain pipe 75a communicating with the drainage chamber 22 is formed in the dirt collection chamber. At this time, the drain pipe (75a) is projected to a predetermined length downward relative to the bottom of the filter housing is located in the drain chamber 22 during assembly.

A filter 81 is installed in the cover 80 to correspond to the dirt collection 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.

Hereinafter, the filter housing 70 in a state where the flow path control valve 26 is installed will be described in detail with reference to FIG. 3 but with reference to FIG. 2.

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 The dirt collection chamber 75 connected to the sampling flow path is formed. At this time, the drain pipe 75a of the waste collection chamber is provided with an opening / closing valve so as to discharge the washing water and food waste of the waste collection chamber to the drainage chamber 22 (see FIG. 2) during the drainage stroke.

The sampling flow path 74 is a flow path formed to continuously filter foreign substances contained in the wash water collected by the sump 20 by using a part of the wash water flowing into the wash water inlet 72.

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 25 is provided in the sump 20. : See FIG. 2). 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 is selectively controlled to open one of the main flow paths 73a among the two main flow paths as shown in FIG. Alternatively, although not shown, the two main flow paths 73a and 73b are opened at the same time. That is, the open state of the main flow path varies depending on the rotational position of the flow path control valve 26.

Therefore, most of the washing water of the washing water inlet 72 is the upper and lower injection arms (4, 6) through the open passage of the main passage (73a, 73b) under the control of the flow path control device 25 by the microcomputer It is introduced into the injection arm of either or both, and the remainder is introduced into the waste collection chamber 75 through the sampling flow path (74).

In the above, the flow path control valve 26 is controlled so that the two main flow paths 73a and 73b are kept open at the same time so that the washing water is supplied to both the upper and lower injection arms, or among the two main flow paths 73a and 73b. Only one may be controlled to open alternately with each other as well as to remain open until the end of the wash.

On the other hand, irrespective of which main flow path the flow control valve 26 opens, a portion of the wash water always flows into the sampling flow path 74. The reason for this is that foreign substances filtering for the wash water is continuously performed. For losing.

The washing water introduced into the waste collection chamber 75 through the sampling flow path 74 overflows through the filter 81 located above the waste collection chamber. At this time, the filter 81 filters out foreign substances contained in the washing water.

In this way, the filtered wash water and the sprayed water dropped into the cover 80 after being injected through the upper and lower spray arms 4 and 5 flow into the sump 20 through the recovery hole 82 of the cover 80. .

The filtering effect on the wash water through the sampling flow path may not be significant if the flow rate through the sampling flow path is small for a short time. The effect is that filtering is performed on almost all wash water.

On the other hand, after this washing stroke is completed, the drain stroke starts.

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 waste collection chamber 75 also flows into the drain pumps 51 and 52 through the drain pipe 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 collection 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 collection chamber. In addition, when the filter part is blocked, since the hydraulic pressure acts largely on the dirt collection chamber, the wash water of the dirt collection chamber is drained through the drainage hose, and the wash water is wasted, and fatigue accumulates in the filter part.

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 has to separately form the sampling flow path and the dirt collection chamber to filter the wash water, there is a problem that the wash water flow path becomes 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 dust collecting chamber is installed on the upper side of the pump housing, so that the structure of the driving unit itself becomes complicated. There is a problem that the height of the remarkably 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 waste collection chamber or the filter part during the drainage operation, the remaining food waste has a problem of causing odor in the dishwasher over time. . Furthermore, when food waste remains on various flow paths such as a dirt collection chamber, there was a problem in that it was inconvenient to remove it.

In order to solve the above-mentioned problems, an object of the present invention is to ensure that all the pumped wash water is sprayed to the dishware through the wash arm, thereby improving the washing performance and allowing the application of a small-capacity washing pump, and the washing stroke It is to provide a dishwasher so that the amount of wash water actually required in the city can be significantly reduced.

That is, the present invention is to provide a dishwasher that can prevent the washing water is unnecessarily drained, reducing the amount of consumption and power consumption of the washing water.

In addition, the present invention, by simplifying the wash water flow path by eliminating the separate sampling flow path and dirt collection chamber to filter the wash water, the flow resistance is reduced, the pumping pressure of the wash water is significantly increased, as a result of the smaller capacity It is to provide a dishwasher to which a washing pump can be applied.

In addition, the present invention, by eliminating the disposer and the screen, to simplify the structure of the drive unit itself, significantly reduce the height of the drive unit, increase the space inside the sump, and as the size of the drive unit is reduced It is to provide a dishwasher that can relatively increase the capacity of the tub.

In addition, an object of the present invention is to provide a dish washer that minimizes the residue of food in the sump during the drainage stroke, and which can easily clean the filtered food residue.

According to one embodiment of the present invention for achieving the above object, a sump containing washing water; An impeller generating a pumping force for the washing water in the sump; A washing motor that imparts rotational force to the impeller and the shaft is disposed in an upright drive type in which the shaft is approximately vertical; A housing assembly having a flow path for guiding the pumped wash water to the wash arm; A cover disposed to cover an upper end of the sump; It is disposed in the sump through the cover, the filter device for filtering the washing water falling on the cover and flowing into the sump; is provided with a dishwasher comprising a.

At this time, the washing motor, characterized in that the outer rotor type of the brushless direct current motor (BLDC motror) is applied.

In addition, the sump is characterized in that the waste is filtered in the filter device is stored and the waste receiving chamber in communication with the drain pump is formed.

The dirt receiving chamber is also formed at the bottom of the sump.

On the other hand, the dirt receiving chamber is preferably formed to be inclined toward the drain pump side.

The lower end of the filter device is formed to be opened, and the lower end of the filter device is coupled to the waste accommodation chamber.

And, the lower end of the filter device and the bottom surface of the dirt receiving chamber is characterized in that spaced apart a predetermined interval.

Further, a drain passage is formed to communicate the waste accommodation chamber with the drain pump.

A drain chamber is formed in the sump to mount a drain pump, and the drain chamber and the waste accommodation chamber communicate with each other by a drain channel.

On the other hand, the filter device, the upper filter penetrates the cover, and filters the large dirt in the wash water dropped to the cover; And a lower filter coupled to the upper filter and the waste receiving chamber, the lower end of the lower filter being able to filter smaller dirts among the waste included in the wash water passing through the upper filter.

And, the upper and / or lower filter is characterized in that it is detachably installed on the cover.

The upper filter may be installed to protrude a predetermined height from an upper surface of the cover.

And, the cover is preferably installed inclined toward the filter device side.

The cover has a plurality of filter holes are formed so that a portion of the washed water is filtered and flows directly into the tub, it is preferable that the filter holes are disposed in the portion avoiding the housing assembly.

On the other hand, the housing assembly, the pump chamber in which the impeller connected to the cleaning motor is disposed; A flow path control chamber communicating with the pump chamber and having a flow path control valve disposed therein; And, the main flow path for guiding the washing water in the flow path control room to each washing arm.

At this time, the pump chamber and the flow path control chamber is preferably arranged on the same plane.

The main flow path is disposed above the pump chamber and the flow path control chamber.

On the other hand, the housing assembly, the 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. It is coupled to cover the upper side of the upper housing, and comprises a connecting housing coupled to the connection pipe connected to the cleaning arm.

The flow path control valve may include a rotation shaft coupled to the shaft of the motor; And a flow path opening and closing plate disposed on an upper end of the rotation shaft and formed in a plate shape as a whole and spaced apart from each other by a communication hole having a different area at a predetermined position so as to selectively open or close the main flow path as it is rotated. .

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.

On the other hand, Figure 9a is a detailed perspective view of the housing assembly of Figure 6, Figure 9b is an exploded perspective view of Figure 9a, Figures 10a to 10c is a main flow path control for each rotation position of the flow path control valve in a state in which the housing for connection is removed A reference diagram showing the state.

11 is a plan view illustrating a state in which the upper housing is removed in FIG. 10A as a reference diagram of FIG. 10A.

With reference to the accompanying drawings, it will be described an embodiment of a dishwasher according to the present invention.

The dishwasher of the present invention includes a housing 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. The assembly 100, the cover 160 disposed to cover the upper end of the sump 110, and the wash water disposed in the sump 110 through the cover 160 and dropped on the cover 160 are filtered. And a drainage pump communicating with the filter device 170 and flowing into the sump 110 and discharging the waste water filtered by the filter device and the wash water in the sump 110 to the outside during the drainage stroke ( 180).

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 washing motor 121 is disposed in an upright drive type in which the shaft is approximately vertical, and it is preferable that an outer rotor type BDC motor (BLDC motror) is applied. 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.

Meanwhile, the housing assembly 100 includes a lower housing 130, an upper housing 140 coupled to cover the lower housing, and a connection housing coupled to the upper housing and connected to a connection pipe connected to the cleaning arm. Consists of 150.

That is, by combining the upper and lower housings 140 and 130, the pump chamber 131 in which the impeller 122 constituting the washing pump 120 is disposed, and the pump chamber 131 communicate with each other, and the flow path control valve A flow path control room 132 in which the 190 is disposed is provided.

The upper housing 140 has main passages 141 and 142 for guiding the washing water to the washing arms.

In addition, the connection housing 150 is coupled to cover the main flow passages 141 and 142 on the upper side of the upper housing 140, and coupling portions are formed at both ends to be coupled to a connection pipe (not shown) connected to the cleaning arm.

Here, 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.

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 100 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 100.

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 these filter holes 161 are disposed only at a portion that avoids the housing assembly 100. 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 ( And a flow channel opening and closing plate 192 having communication holes 192a and 192b for selectively or simultaneously opening and closing 141 and 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.

Meanwhile, the communication openings 192a and 192b having different areas are formed in the flow path opening and closing plate 192, thereby allowing selective control of the main flow path according to the rotational position of the flow path opening and closing plate.

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.

7 and 9b and 10a to 10c, 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.

That is, in the state in which the opening and closing plate 192 of the flow path control valve 190 is shown in FIG. 10A, the washing water is sent to the upper washing arm 4 (see FIG. 1) through the main flow passage 142, and FIG. 10B. In this state, the washing water is sent through the main passage 141 to the lower washing arm 5 (see FIG. 1). In the state as shown in FIG. 10C, the washing water is transferred to both the upper and lower washing arms through the main passages 141 and 142. Washing water is sent.

At this time, since the dish washing machine of the present invention does not have a separate sampling flow path, the pumped washing water is sent to the washing 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 dirt not filtered in the upper filter 176 is filtered in the lower filter 171. As a result, only the wash water in which the dirt is filtered flows into the sump 110. do.

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.

This washing stroke proceeds for a predetermined time, and over time, the food waste collected in the filter device 170 gradually increases, and when this washing stroke is completed, the draining stroke is started.

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 collection chamber for filtering the wash water, the flow resistance is reduced, and the pumping pressure of the wash water is significantly increased, and as a result, There is an effect to apply a washing pump of the capacity.

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 (8)

Tub where the tableware is located; A sump having a collecting part for providing a space for collecting the washing water dropped and dropped in the tub; A washing pump pumping all the washing water collected in the collecting unit to the tub side through a main flow path; A filter device provided at one side of the collection part to filter at least a part of the washing water; Dishwasher comprising a. The method of claim 1, wherein the filter device, And the washing water is directed to the collecting part only through the side wall of the filter device. The method of claim 2 The lateral side of the collecting unit is further provided with a waste accommodation chamber for receiving waste The filter device is a dishwasher, characterized in that the lower end is opened so that the dirt falls into the waste accommodating chamber, and seated above the waste accommodating chamber. The method of claim 3, The waste container is dishwasher, characterized in that provided in the lower side of the side of the collecting portion. According to claim 3, wherein the filter device, A lower filter opening at a lower end thereof and seated on the waste accommodation chamber; An upper filter for filtering large dirt of washing water before the lower filter; Dishwasher comprising a. The method of claim 5, Further comprising a cover covering the upper end of the sump, And the upper filter penetrates the cover and is detachably coupled to the lower filter. The washing pump of claim 1, And an impeller provided on one side of the filter device at an upper portion of the collection unit. The method of claim 7, wherein And an upper and lower housing assembly provided at one side of the filter device, the upper and lower housing assemblies having a pump chamber in which the impeller is disposed and a channel control chamber in which a flow path control valve is disposed.

Images