KR100378711B1 - Dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher having an improved filtration function of a filter assembly for filtering wash water. The dishwasher according to the present invention includes a case 10, a washing tank 12 removably mounted in the case 10, A spray arm 30 installed in the washing tank 12, a water supply pump 40 for supplying pressurized washing water to the spray arm 30, a collecting tank 14 provided on the lower surface of the washing tank 12, and the house Mounted in the water tank 14, the filter assembly 50 consisting of the first and second filters 52 and 54, and the filter assembly 50 to flow into the filter assembly 50 to distribute the flow of the washing water toward the feed pump 40 side It comprises a dispersing means.

Here, the dispersing means is provided on the washing flow path between the primary filter 52 and the feed water pump 40 in the sump 14, and consists of a baffle 70 which partially blocks the washing flow path. The top of the baffle 70 is fixed, and has a structure in which a slot 70a is formed in the middle.

Therefore, according to the dishwasher according to the present invention, first, the flow rate of the washing water can be reduced to reduce the amount of washing water used. There is an advantage that the operating efficiency is improved, such as can be prevented

Description

Dishwasher {Dishwasher}

The present invention relates to a dishwasher, and more particularly, to a dishwasher having an improved filtration function of a filter assembly for filtering washing water.

In general, the drawer dishwasher is a device for automatically washing the dishes by spraying the washing water mixed with detergent, the case 10 and the washing tank 12 is removably mounted to the case 10 as shown in FIG. In addition, the rack (20) mounted on the washing tank (12) for storing dishes, the injection arm (30) installed in the washing tank 12, and pressurized supply of the washing water to the spray arm (30) and washing water It consists of a water supply pump 40 for draining, and filtration means for filtration of the washing water.

Here, the injection arm 30 is supported by the arm holder 32 so as to be horizontally rotated, and has a structure provided on the upper surface so that a plurality of injection nozzles 301 toward the rack (20).

The water supply pump 40 is a so-called washing / draining integral type in which the circulation and discharge operation of the washing water is determined by the rotational direction. As shown in FIG. 2, the driving motor 42 and the upper and lower vanes 44 connected to the same axis ( 46), the upper vane 44 is connected to the washing flow path for the circulation of the wash water, and the lower vane 46 is connected to the drainage flow path for the discharge of the wash water.

The filtration means is composed of a filter assembly 50 provided in the lower portion of the washing tank 12, and a fine filter (not shown) provided in the bottom surface of the washing tank 12, the filter assembly 50 is shown in FIG. As described above, the cylindrical primary filter (fine eye filter) 52 and the secondary filter (coarse eye filter) 54 mounted in the primary filter 52 are formed, and the sump 14 of the case lower surface is formed. It is mounted in).

According to the dishwasher according to the related art as described above, the washing water mixed with water and detergent is pressurized and supplied to the injection arm 30 through the washing flow path by the water supply pump 40, so that the rack 20 is sprayed through the injection nozzle 301. The washing of the dishes is performed by spraying the dishes seated on the).

To describe the operation of the water supply pump 40 in more detail, in the washing process, the upper vane 44 connected to the washing flow path rotates in the forward direction, thereby sucking the washing water (when the thick arrow in the drawing) through the washing suction port 402 and washing again. The washing water is discharged to the injection arm 30 through the discharge port 401. At this time, the lower vane 46 applies suction force (indicated by dotted arrows on the drawing) to the drain discharge port 403, and applies a toe output to the drain suction port 404, thereby preventing suction of washing water through the drain suction port 404. .

In addition, in the drainage process performed after the end of the washing process, the rotation operation direction of the water supply pump 40 is reversed from the washing process so that the upper and lower vanes 44 and 46 rotate in the reverse direction. Therefore, a suction force is applied to the drain suction port 404 side and a toe output is applied to the drain discharge port 403 side, so that the wash water is pressurized and drained through the drain flow passage, and the toe output by the upper vane 44 to the washing suction port 402. This is applied so that the circulation of the washing water is not made.

On the other hand, in the conventional dishwasher as described above, the washing water is filtered by the filtering means to prevent contamination weight due to circulation use, the filtration action by the filter assembly 50 is the washing water sprayed from the injection arm (30) It is made in such a way that foreign matters such as food waste mixed in the washing water are filtered while being introduced into the sump 14 and sequentially passing through the primary filter 52.

After completion of the washing process, the washing water is drained through the secondary filter 54. At this time, the foreign matter having large particles is caught by the secondary filter 54 so that the drainage passage is not blocked by the foreign matter.

On the other hand, in the prior art, in order to perform the washing operation smoothly, the washing water must be continuously supplied from the water supply pump 40 to the spraying arm 30, and the spraying arm 30 is required to exert the washing effect by strongly hitting the dishware. Since the pressure of the washing water injected from the injection nozzle 301 of the) must be more than a predetermined value, the rotational speed of the feed water pump 40 must also be maintained to exceed the reference value.

Therefore, a large amount of washing water is required in order for the washing water to be continuously sprayed from the injection nozzle 301 of the injection arm 30 above a predetermined pressure. Otherwise, the flow of the washing water is interrupted and air is supplied to the feed water pump 40. There is a problem that the cleaning efficiency is lowered by the inflow.

In addition, the washing water introduced into the filter assembly 50 by the strong suction force of the feed water pump 40 is concentrated in the direction of the feed water pump 40, and consequently, the filtration action for foreign matter is made only by a part of the primary filter 52. And even foreign matter caught by the primary filter 52 adheres to the wall surface of the filter 52.

Therefore, according to the foreign matter sticking phenomenon, the circulating efficiency of the washing water is reduced by partially blocking the washing flow path leading from the primary filter 52 to the feed water pump 40, and the foreign matter that should be discharged through the drainage flow path during the drainage operation is filtered. There is also a problem that remains in the assembly 50, increasing the degree of contamination of the replenished wash water.

The present invention has been made to solve the above-mentioned conventional problems, by dispersing the flow of the wash water concentrated on the feed water pump side to prevent foreign matter sticking in the filter to prevent the circulation efficiency of the wash water is lowered, the tableware can reduce the amount of washing water used To provide a washer.

1 is a schematic cross-sectional view showing the structure of a general dish washer.

2 is a cross-sectional view showing the structure of a water supply pump applied to a general dishwasher.

Figure 3 is a schematic diagram showing the structure of the filter assembly of the filtration means of a typical dishwasher.

Figure 4 is a cross-sectional view showing the structure of the dispersion means applied to the dishwasher according to an embodiment of the present invention.

5 is a plan view showing the flow of washing water in the dishwasher according to an embodiment of the present invention.

6 is a cross-sectional view showing the flow of the washing water in the dishwasher according to the embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: case 12: washing bath

14: sump 20: rack

30: injection arm 301: injection nozzle

40: feed pump 401: cleaning discharge port

402: cleaning inlet 403: drain discharge port

404: drain inlet 42: drive motor

44: upper vane 46: lower vane

50: filter assembly 52: primary filter

54: secondary filter 70: baffle

70a: slot

A dishwasher provided to achieve the above object includes a case, a washing tank removably mounted in the case, a spray arm installed in the washing tank, a feed pump for supplying pressurized washing water to the spray arm, and first and second And a dispersing means for distributing a flow of the washing water flowing into the filter assembly and directed toward the feed water pump.

Here, the dispersing means is provided on the washing flow path between the primary filter and the feed water pump, and made of a baffle that partially blocks the washing flow path, wherein the baffle has a structure in which a top is fixed and a slot is formed in the middle. It is characterized by.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 4 through 6, and like reference numerals refer to like parts of the present invention.

The dishwasher according to the embodiment of the present invention includes a dispersing means for dispersing the flow of the washing water flowing into the sump 14 and passing through the primary filter 52 and then to the feed water pump 40 as shown in FIG. The dispersing means is provided on the washing passage between the primary filter 52 and the feed water pump 40 in the sump 12, and a baffle 70 partially blocking the washing passage. )

Here, the baffle 70 is formed at its upper end extending from the upper side of the sump 14, the lower and left and right end sides to maintain a constant interval between the inner surface of the sump 14, slot in the longitudinal direction in the middle It consists of a structure in which 70a was formed.

According to the embodiment of the present invention configured as described above, as shown in FIGS. 5 and 6, the strong flow of the washing water injected into the sump 14 and then introduced into the sump 14 is blocked by the baffle 70. As a result, the flow rate of the washing water is lowered and turbulence is formed.

Therefore, the washing water is distributed in the left and right and the lower direction around the baffle 70 to pass through the baffle 70, and the flow of the washing part is also formed through the slot 70a at the center of the baffle 70. As the flow is dispersed, the flow rate of the wash water is reduced as a result, and foreign substances mixed in the wash water are also spread out and caught not only as a part of the primary filter 52.

Therefore, according to the present embodiment, since the speed of the washing water flowing into the water supply pump 40 from the primary filter 52 is reduced, the injection arm 30 from the water supply pump 40 even if a large amount of washing water is not initially supplied. , The phenomenon that the flow of washing water leading to the sump 14 is not broken.

In addition, the foreign matter is adhered to only a portion of the filter 52 to prevent the phenomenon that the cleaning flow path is partially blocked, when drained, the foreign matter accumulated in the filter assembly 50 is smoothly discharged.

As described above, according to the dishwasher according to the present invention, first, the flow rate of the washing water is reduced, thereby reducing the amount of washing water used. There is an advantage that the operating efficiency is improved, such as to prevent the phenomenon of contamination.

Claims (3)

With the case, A washing tank mounted in the case so as to be pulled out; An injection arm installed in the washing tank, A water supply pump for pressurizing and supplying washing water to the injection arm; A collecting container provided on the lower surface of the washing tank, A filter assembly mounted in the sump, the filter assembly consisting of first and second filters, Dispersing means for dispersing the flow of the washing water flowing into the filter assembly toward the feed water pump Dishwasher comprising a. The method of claim 1, wherein the dispersing means A dishwasher in the sump, which is provided on the washing flow path between the primary filter and the feed water pump, and comprises a baffle that partially blocks the washing flow path. The dishwasher of claim 2, wherein the baffle is fixed at an upper end thereof and has a slot formed in the middle thereof.