KR20060115482A - Dish washer - Google Patents

Abstract

A dishwasher is provided to reduce the entire height of a driving unit of the dishwasher by forming an impeller housing in a washing pump and simplifying assembling structure, and to discharge washing water through a recovery pipe to a drain pump by easily moving residual washing water along an inclined bottom of a pollutant chamber. A dishwasher includes: a horizontal washing pump(200) installed at a side of a sump(120) and provided with a suction port(212) for sucking washing water and a discharge port(211) for pressurizing and discharging washing water; the sump containing washing water and having a supply passage communicated with the discharge port; and a pollutant chamber(170) having a washing water inlet part(171) connected to the supply passage. The washing water inlet part is protruded out of the pollutant chamber, and a couple of washing water passages(176,177) are connected to a washing arm and an inlet passage extended and connected to the washing water inlet part. A rotary control valve(300) is installed in a connection portion of the inlet passage and the washing water passages to regulate flow of washing water.

Description

Dishwasher {dish washer}

1 is a view showing the internal configuration of a typical dishwasher.

Figure 2 is an exploded perspective view showing a drive unit of the dishwasher according to the prior art.

Figure 3 is an exploded perspective view showing a drive unit of the dishwasher according to the present invention.

Figure 4 is an exploded perspective view showing a horizontal washing pump according to the present invention.

Figure 5 is a plan view showing the assembled state of the sump and dirt chamber of the dishwasher according to the present invention.

6 is a perspective view of a rotary control valve according to the present invention.

7 is a plan view showing a flow path structure of the dish washer according to the present invention.

8 is a cross-sectional view of the dishwasher according to the present invention.

* Explanation of symbols for main parts of drawings *

100: base 110: tub bottom plate

120: sump 170: dirt chamber

180: filter frame 190: filter housing

200: horizontal washing pump 300: rotary control valve

The present invention relates to a dishwasher, and more particularly, to a dishwasher having an improved flow path control structure.

In general, the dishwasher is a device for washing by spraying the washing water at a high pressure to the dish and then drying.

1 is a schematic diagram illustrating a general dish washer.

As shown in FIG. 1, the dishwasher includes a tub 1, upper and lower injection arms 4 and 5, upper and lower racks 6 and 7, and a driving unit 10.

Here, a washing space for washing dishes is formed in the tub 1, and upper and lower spray arms 4 and 5 for spraying the washing water are provided on the inner upper and lower portions of the tub 1. In addition, the dishes washed by the washing water sprayed from the injection arms are accommodated in the upper and lower racks (6, 7).

Meanwhile, the washing water sprayed through the injection arms 4 and 5 is pumped by the driving unit 10, and the driving unit 10 includes a sump and a pump. do. Wash water is stored in the sump, and the wash water stored in the sump is pumped by the pump and moved to the injection arms 4 and 5 along the upper and lower guide tubes 2 and 3.

Figure 2 is an exploded perspective view of the driving unit of the dishwasher according to the prior art.

As shown in FIG. 2, the driving unit 10 includes a sump 20, a heater 30, a washing pump, and a drain pump 50. Here, the sump 20 stores washing water, and an upper portion of the sump 20 is provided with a heater 30 for heating the washing water. In addition, after the washing is completed, the washing water is discharged to the outside by the drain pump (50).

On the other hand, the washing pump comprises a motor 40, an impeller 42, an impeller housing 60. Here, the impeller 42 is accommodated in the impeller housing 60 provided in the upper part of the sump 20, the impeller 42 is a motor 40 and the rotating shaft 41 provided in the lower part of the sump 20 Connected through.

A dirt chamber 70 is provided at an upper side of the impeller housing 60. When the impeller 42 is rotated by the driving of the motor 40, the washing water flows into one side of the dirt chamber 70 and then a control valve ( 26, it is selectively moved to the dirt flow path and the injection arms according to the opening and closing of 26). The wash water moved to the spray arms is used to wash dishes, and the wash water introduced into the dirt flow is purified as described below. Here, the impeller housing 60 is provided as a separate component, the dirt chamber 70 is assembled to the upper side around the impeller housing 60. In addition, a cover portion 75 protruding upward to cover the impeller 42 is formed at the central portion of the waste chamber 70. The cover portion 75 forms a cover portion 75 inside the waste chamber 70. The total volume is reduced.

In addition, a filter frame 80 is provided above the dirt chamber 70, and holes 82 communicating with the sump 20 are formed at an outer edge of the filter frame 80. In addition, a filter housing 90 is mounted on the filter frame 80, and the filter housing 90 is provided with a filter 94 for filtering dirt contained in the washing water. Here, the filter 94 is provided on the upper side of the dirt chamber 70, except for the cover portion 75 protruding from the central portion of the dirt chamber 70 in order to purify the wash water containing dirt more effectively. It is preferably provided to cover the part.

Accordingly, the washing water introduced into the dirt flow path is purified while overflowing the upper side of the filter 94, and then is again recovered to the sump 20 through the holes 82 formed in the filter frame 80. .

In addition, a guide tube support member 96 connected to the lower guide tube (3 in FIG. 1) is coupled to a central portion of the filter housing 90 as a separate component.

However, the dishwasher according to the prior art had the following problems.

First, since the motor and the impeller of the washing pump used in the dishwasher are provided separately in the vertical direction, there was a problem that it is difficult to assemble. In particular, since the impeller housing is provided as a separate part, the sealing between the impeller housing and the dirt chamber is not stable and there is a problem in that pressure loss due to leakage of the washing water occurs.

Second, since the dirt chamber is formed along the circumference of the impeller housing, there is a problem in that the volume of the dirt chamber is reduced due to the cover part formed to protrude upward from the central part of the dirt chamber. Thus, there was a limit to increasing the amount of wash water purified by the filter when overflowed through the dirt chamber.

In order to solve the above problems, the present invention provides a dishwasher having a washing water flow path of an improved structure.

In order to achieve the above object, the dishwasher according to the present invention is provided with a suction port in which the washing water is sucked, and the discharge port is discharged by pressing the sucked washing water side by side horizontal washing pump mounted to the side of the sump; A sump accommodating the washing water and having a supply passage communicating with the discharge port; And it is preferably made to include a dirt chamber having a washing water inlet connected to the supply passage.

Here, the washing water inlet is preferably provided to protrude outward from the dirt chamber. The dirt chamber has an inflow passage extending to be connected to the washing water inlet and a pair of washing water passages connected to at least one washing arm, and at a point where the inflow passage and the pair of washing water passages meet, a rotary type for controlling the flow of the washing water. A control valve may be provided. At the meeting point, a boundary wall forming a boundary of each flow path may be provided at 120 ° intervals.

The rotary control valve may include a first partition wall configured to close any one of the flow paths as the rotary control valve is rotated, and a second partition wall provided at an opposite portion of the first partition wall to be in contact with any one of the boundary walls. desirable. The first and second barrier ribs penetrate through each other, and the facing portions of the barrier ribs may be streamlined. One side of the inflow passage is connected to a sampling passage, and the sampling passage is preferably provided along an edge of the dirt chamber.

And, one side of the waste chamber is connected to the drain pump, the bottom surface of the waste chamber is preferably formed to be inclined toward one side connected to the drain pump.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to FIGS. 3 to 8.

3 is an exploded perspective view of the dishwasher driving unit according to the present invention.

As shown in FIG. 3, the driving unit of the dishwasher includes a horizontal washing pump 200 and a sump 120. Here, the sump 120 is preferably provided with a heater 123 for heating the washing water. In addition, the edge of the sump 120 is inserted into and fixed to the hole 111 formed at the center of the tub lower plate 110, and the base 100 is provided below the tub lower plate 110. A ring-shaped packing member 115 is provided between the edge of the hole 111 and the edge of the sump 120 to prevent leakage of washing water.

A predetermined gap is formed between the bottom surface of the tub lower plate 110 and the bottom surface of the base 100, and the horizontal washing pump 200 is positioned in the space forming the gap. Therefore, after the sump 120 is inserted into the hole 111 formed in the tub lower plate 110 and the horizontal washing pump 200 is assembled to the sump 120, the tub lower plate 110 is connected to the base 100. Is loaded on top of the

Preferably, the horizontal washing pump 200 includes a suction port 212 through which the washing water is sucked, and a discharge port 211 through which the sucked washing water is pressurized and discharged. In addition, the sump 120 is provided with a connector 127 and a supply port 126 connected to the suction port 212 and the discharge port 211, respectively.

In detail, the sump 120, the washing water is stored, the washing water is sucked into the horizontal washing pump 200 through the connector 127 and the suction port 212, the sucked washing water is pressurized by an impeller It flows into the supply port 126 through the discharge port 211.

Here, the suction port 212 and the discharge port 211 is preferably directly connected to the connector 127 and the supply port 126, thereby eliminating the need to connect a separate washing water hose can facilitate the assembly convenience. have.

The connector 127 and the supply port 126 is preferably provided side by side along the horizontal direction on the ground. Through this, the overall height of the sump 120 can be reduced and the horizontal washing pump 200 is also fastened to the sump 120 in a horizontally laid state, thereby increasing the space utilization inside the dishwasher. .

On the other hand, the top of the sump 120 is provided with a dirt chamber 170. Here, since the existing impeller housing is provided inside the horizontal washing pump as described below, it is possible to simplify the configuration of the upper sump.

Referring to the configuration of the horizontal washing pump for pumping the washing water in more detail as follows.

Figure 4 is an exploded perspective view showing an embodiment of a horizontal washing pump of the dishwasher according to the present invention.

As shown in FIG. 4, the horizontal washing pump 200 includes an impeller 250, an impeller housing 240, and a front casing 270. Here, the rear of the impeller housing 240 is preferably fixed to the motor 230, the impeller 250 is connected to the motor 230 is provided rotatably. Here, the motor 230 is made of a BLDC motor, the rear of the motor 230 is preferably fixed to the dishwasher frame by a fixed holder 400.

An impeller 250 connected through the motor 230 and the rotating shaft 231 is accommodated in the impeller housing 240, and a connection part of the impeller 250 and the rotating shaft 231 is sealed to prevent leakage of washing water. Member 245 is provided. In addition, the internal space of the impeller housing 240 is partitioned and communicated with the suction port 212 and the discharge port 211. The front casing 270 is directly fastened to the front of the impeller housing 240, the inlet 212 and the discharge port 211 is formed integrally divided into one casing 270, respectively.

Therefore, when the impeller 250 is rotated, the washing water introduced through the suction port 212 is pressurized in the impeller housing 240 and pumped through the discharge port 211. Here, it is preferable to reduce the cross-sectional area of the discharge port 211 than the cross-sectional area of the suction port 212, which is to facilitate the flow of the pressurized fluid.

Here, the suction port is preferably provided with a mesh screen (mesh screen) for filtering the bulky dirt.

In addition, the suction port 212 is preferably made of a flat shape. This is to limit the height of the suction port 212 that should have a relatively large area to a certain level or less. In more detail, the width of the cross section of the suction port is preferably formed larger than the height. In addition, the connector (127 of FIG. 3) formed in the sump to be coupled to the suction port 212 also has a shape corresponding to the shape of the suction port 212.

The fixing structure between the washing motor and the sump is as follows.

3 and 4, the impeller housing 240 and the front casing 270 are formed with a plurality of holes 248 and 278 into which screws or bolts are inserted at predetermined intervals along the circumferential direction. In addition, the edge of the connector and the supply port formed in the sump is provided with a fastening portion (not shown) to which the bolt is fastened. Accordingly, when the bolts penetrating the hole parts 248 and 278 are fastened to the fastening part, the front casing 270 is clamped and fixed between the impeller housing 240 and the outer circumferential surface of the sump.

In addition, protruding suction guides 272 and discharge guides 271 are formed on the front side of the front casing 270, respectively. The suction guide 272 is inserted into the connector 127, the discharge guide 271 is preferably configured to be inserted into the supply port 126.

On the outer circumferential surfaces of the guides 271 and 272, grooves into which the waterproof rings 275 and 276 to prevent leakage of the washing water and the vibration rings 277 and 278 to block the vibration generated from the motor 230 are inserted are formed, respectively. do.

Accordingly, the above-described bolt is fastened so that the horizontal washing pump 200 is fixed to the side of the sump 120, and the suction port and the connection port, and the discharge port and the supply port communicate with each other.

On the other hand, when the motor 230 is not stably fixed, leakage of washing water occurs and very loud noise is generated. In order to prevent this, the rear of the motor 230 is preferably fixed to the base 100 by a fixed holder 400. Here, the dustproof packing member 410 is preferably provided between the rear of the motor 230 and the fixed holder 400.

As shown in Figure 4, the fixing holder 400 is bent in the 'L' shape, one surface 430 is coupled to the rear of the washing pump 200. In detail, the fixing holder 400 is preferably fastened by using a bolt or the like behind the motor 230. In addition, in order to reinforce the strength of the bent portion of the fixed holder 400, it is preferable that the bead 430a is formed in the bent portion.

Meanwhile, the movement of the washing water on the sump 120 will be described in detail as follows.

5 is a plan view illustrating a state in which a waste chamber is assembled on an upper side of the sump.

As shown in FIG. 5, the washing water pumped through the supply port 126 is introduced into the washing water inlet 171 of the dirt chamber 170 through the supply passage 121 formed in the sump 120. Here, it is preferable that an O-ring made of rubber or the like is provided between the supply passage and the dirt chamber 170 to prevent leakage of the washing water.

In addition, the washing water inlet 171 is preferably provided to protrude outward from the dirt chamber (170). This is to prevent the space in which the wash water containing dirt is reduced when the wash water inlet 171 is located at the center portion of the dirt chamber 170.

On the other hand, the dirt chamber 170 is provided with an inflow passage extending to be connected to the washing water inlet 171 and a pair of washing water passages 176 and 177 connected to at least one washing arm. Here, the pair of wash water passages 176 and 177 guide the wash water introduced through the wash water inlet 171 to the upper and lower arms, respectively.

The washing water introduced into the washing water inlet 171 is discharged to the washing water channel 176 connected to the upper arm or the washing water channel 177 connected to the lower arm by the control valve 300.

On the other hand, Figure 6 is a perspective view showing a rotary control valve applied to the dishwasher.

As shown in FIG. 6, the rotary control valve 173 has a partially hollow cylindrical shape, and selectively opens and closes each flow path as it is rotated.

In detail, the rotary control valve 300 may include a first partition 301 for selectively closing one of the flow paths by rotation, and a second partition provided at a portion facing the first partition 301. A rotating part 305 having a 302. Here, the first partition 301 and the second partition 302 pass through and function as a flow path.

A motor 307 is provided below the rotating part 305, and the rotating part 305 connected by the motor and the rotating shaft is selectively rotated. Here, the selective rotation of the motor 307 is controlled by a controller (not shown).

7 is a plan view showing the structure of the flow path of the dishwasher according to the present invention.

As shown in FIG. 7, the washing water introduced through the washing water inlet 171 flows into the inflow passage 311. Here, the rotary control valve 300 for controlling the flow of the washing water is provided at the point where the inflow passage 311 and the pair of washing water passages 176 and 177 meet.

At the meeting point, the boundary wall 320 forming the boundary of each of the flow paths is preferably provided with a spacing of 120 °. That is, at the points where the three flow paths meet, each flow path 311, 312, 313 is disposed at equal angles from the center of the point. Of course, when there are three or more flow paths, the boundary wall 320 may be arranged at equal intervals as the number of the flow paths.

Therefore, as the rotary control valve 300 is rotated about 120 ° or 240 °, the first partition 301 shields any one of the two washing water flow paths 312 and 313. At this time, the boundary wall 320 is in contact with each side of the first partition 301, either one of the boundary wall 320 or the first partition 301 is provided with a sealing member is preferably to prevent the leakage of the wash water. Do.

In addition, the second partition 302 formed at an opposite portion of the first partition 301 is in contact with any one of the boundary walls 320. Here, the space between the first partition 301 and the second partition 302 is a passage through which the washing water is moved, in order to ensure the smooth movement of the washing water, the first partition 301 and the second partition wall Opposite sides of 302 are preferably rounded in a smooth streamline.

Here, the rotary control valve 300 is rotated by stirring left and right to supply the washing water to each of the washing water flow passages (176, 177), the washing water moved through the flow path through the upper / lower arms through the upper / lower arms It is sprayed on the dishes accommodated in the racks to perform a washing stroke.

On the other hand, one side of the inflow passage 311 is connected to the sampling passage 175, the sampling passage 175 is preferably provided along the edge of the dirt chamber 170. As a result, the sampling flow path 175 may be prevented from narrowing the inner space of the dirt chamber 170, so that the washing water containing the dirt introduced into the dirt chamber 170 may be more stably purged.

In addition, regardless of whether the rotary control valve 300 is rotated, the sampling flow path 175 is always kept open, and a part of the washing water introduced through the washing water inlet always flows into the sampling flow path 175. .

8 is a cross-sectional view of the dishwasher according to the present invention.

Referring to Figures 3 and 8, the process of purifying the washing water introduced into the sampling flow path will be described.

First, the washing water supplied to the sampling flow path 175 is preferably dropped through the connection pipe 178 to the drain pump connecting portion (125 of FIG. 3) provided on one side of the sump 120. At this time, the large volume of dirt contained in the washing water is accumulated in the lower side of the drain pump connecting portion 125 (wherein, the dirt accumulated in the lower side of the drain pump connecting portion 125 is a washing water discharge stroke after the washing stroke of the dish is completed). When the drain pump 130 is driven is discharged to the outside with the wash water). At this time, in the drain pump connecting portion 125 to which the drain pump 130 and the sump 120 are connected, when the pressure of the drain pump connecting portion is high, a check valve 400 for blocking the washing water from being introduced into the sump 120. Is preferably provided. That is, the check valve 400 is opened only when the wash water flows out from the sump 120 to the drain pump 130, and the inflow of the wash water from the drain pump connection part 125 to the sump 120 is blocked. do.

On the other hand, the washing water dropped to the drain pump connection portion is wrapped around the outside of the connection pipe 178 with a predetermined interval in the form of the cross-section of the waste chamber 170 along the recovery pipe 179 made of an annular or double pipe (duct) shape. Flows back to the inner side.

The filter frame 180 and the filter housing 190 mounted on the upper surface of the central portion of the filter frame are provided on the dirt chamber 170. Here, the dirt chamber 170 and the filter housing 190 are preferably fixed by welding. In addition, the support member 196 for supporting and fixing the guide tube connected to the upper injection arm is preferably welded to the filter housing 190 in the center portion of the filter housing 190.

In addition, the filter housing 190 is provided with a filter 194 along the circumferential direction, the through-holes 185 corresponding to the filter is formed in the filter frame 180 and the sump 120 on the outer surface ) A plurality of recovery holes 182 are formed. Therefore, the washing water introduced into the dirt chamber 170 is overflowed and purified while passing through the filter 194, and is recovered to the sump 120 through the recovery hole 182.

In this way, some of the washing water is purified, and the purified washing water is again sprayed into the dishes through the spraying arm.

On the other hand, as described above, one side of the dirt chamber 179 is connected to the drain pump 130 through the recovery pipe 179. Here, the bottom surface of the dirt chamber 179, as shown, is preferably formed to be inclined toward the portion formed with the recovery pipe 179 connected to the drain pump 130. Through this, after the washing operation is completed, the washing water remaining in the dirt chamber 170 is more easily moved along the inclined bottom surface, and flows into the drain pump 130 through the collecting pipe 179 to the outside. May be discharged.

Each embodiment of the present invention as described above is configured to help the understanding of the present invention, and is not limited to the above-described embodiment only, various modifications may be made without departing from the technical spirit of the present invention.

The dishwasher according to the present invention described above has the following effects.

First, since the impeller housing of the washing pump is provided in the washing pump, it is easy to manufacture the washing motor unit, and the assembly structure of the parts provided on the sump can be simplified. In addition, the overall height of the dishwasher driving unit may be lowered as compared with the case where the impeller housing is separated and assembled on the upper part of the sump.

Second, since there is no need to assemble a separate impeller housing in the lower portion of the dirt chamber, it may be easy to configure so that the pumped washing water does not leak.

Third, since the washing water inflow portion into which the washing water pumped from the washing pump flows protrudes outward from the soil chamber and the sampling flow path is disposed along the edge of the soil chamber, the washing water is stored in the waste chamber. Can be increased. Therefore, the filter frame may be provided with a filter in a larger area, and the amount of washing water purified by the filter when overflowed through the dirt chamber may be increased.

Fourth, since the bottom surface of the dirt chamber is inclined, the washing water remaining in the dirt chamber is more easily moved along the inclined bottom surface after the washing stroke is completed, and is introduced into the drainage pump through the collecting pipe and discharged to the outside. Can be.

Claims (8)

A horizontal washing pump having a suction port through which the washing water is sucked and a discharge port through which the sucked washing water is pressurized and discharged and mounted on the side of the sump; A sump accommodating the washing water and having a supply passage communicating with the discharge port; And And a waste chamber having a washing water inlet connected to the supply passage. The method of claim 1, And the washing water inlet protrudes outward from the dirt chamber. The method of claim 1, The dirt chamber is It has an inflow passage extending to be connected to the washing water inlet and a pair of washing water passages connected to at least one washing arm, And a rotary control valve for controlling the flow of the washing water at a point where the inflow passage meets the pair of washing water passages. The method of claim 3, wherein The dishwasher is characterized in that the boundary wall forming the boundary of each flow path is provided with a 120 ° interval at the meeting point. The method of claim 4, wherein The rotary control valve A first partition wall configured to close any one of the flow paths as it is rotated; And a second partition provided at an opposite portion of the first partition to be in contact with any one of the boundary walls. The method of claim 5, The first and second partitions penetrate between the partition walls, the partitions facing each other characterized in that the dishwasher is made of a streamlined. The method of claim 3, wherein One side of the inflow passage is connected to the sampling flow path, the sampling flow path, characterized in that provided along the edge of the dirt chamber. The method of claim 1, One side of the waste chamber is connected to the drain pump, the bottom surface of the waste chamber dishwasher, characterized in that formed inclined toward one side connected to the drain pump.

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