KR20070105054A - Dish washer - Google Patents

Abstract

A dishwasher is provided to improve satisfaction for users and reliability of the product by discharging fine foreign materials completely during a drain process while cleaning a filter assembly. A dishwasher comprises a sump(19), a filter assembly(100), and a water current generating member. The sump stores washing water. The filter assembly collects fine foreign materials flowing into the sump. The water current generating member separates the foreign materials attached to the filter assembly to generate rotary water current inside the sump.

Description

Dishwasher {Dish washer}

1 is a perspective view showing the structure of a dish washer according to the spirit of the present invention.

Figure 2 is an exploded perspective view showing a coupling structure of the filter assembly and the sump according to the spirit of the present invention.

3 is a partial cross-sectional view showing a sump structure according to the spirit of the present invention.

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

10: dishwasher 11: cabinet

12 door 13 upper rack

14: lower rack 15: upper nozzle

16: lower nozzle 17: top table

18: Tub 19: Sump

30: motor 31: blade

The present invention relates to a dishwasher, and more particularly, to a dishwasher equipped with a foreign substance discharge structure to allow the fine foreign substances caught in the filter assembly to be completely discharged during the drainage process, so that the sanitary condition inside the sump is clean. .

In general, the dishwasher is a home appliance for washing food residues on the surface of the dish by high-pressure washing water sprayed from the spray nozzle. In detail, the dishwasher includes a tub in which a washing tank is formed and a sump mounted on the bottom of the tub to store washing water. Then, the washing water is moved to the spray nozzle by the pumping action of the washing pump mounted inside the sump, and the washing water moved to the spray nozzle is sprayed at high pressure through the spray hole formed at the dispensing nozzle end. In addition, the washing water sprayed at a high pressure hits the surface of the tableware, and dirt, such as food residues on the tableware, falls to the bottom of the tub.

On the other hand, in the conventional dishwasher, the sump is equipped with a filter assembly for filtering food waste and other foreign matter inside. Therefore, the foreign matter falling into the sump during the cleaning process is filtered so that the foreign matter flows into the injection nozzle so that the injection nozzle is not blocked.

In detail, the filter assembly allows a plurality of filters to be combined in two or more layers to filter out bulky foreign matters to fine foreign matters. In addition, the fine foreign matter is kept away from the mesh mounted on the outermost part of the filter assembly, thereby preventing foreign matter from entering the washing pump and the spray nozzle.

On the other hand, in the case of the conventional filter assembly, the bulky foreign matter is filtered by the internal filter, and the internal filter is separated from the sump to form a structure for the user to directly discard the foreign matter.

However, the foreign matter caught in the mesh mounted on the outermost of the filter assembly has a problem that is not easy to clean. In detail, the mesh filter has a very small mesh shape with holes, and when foreign matter is caught in the mesh, the washing water is not discharged smoothly. In addition, when the washing machine is not used for a long time while the washing machine is used for a long time, the washing water may not be smoothly discharged due to clogging of the mesh and flows backward. In addition, the backwashing water flows into the washing pump together with the foreign matter, and thus the washing pump does not operate properly, or the injection hole of the injection nozzle is blocked. Moreover, since the filter assembly is a device that is caught with dirty debris, the user is reluctant to touch by hand, and the cleaning cycle becomes longer, and such problems often occur.

The present invention has been proposed to solve the above problems, and provides a dishwasher equipped with a filter assembly to be automatically discharged during the draining process, even if the user does not remove the fine foreign substances caught on the outermost of the filter assembly by hand. It aims to do it.

Dishwasher according to the present invention for achieving the above object is a sump in which the washing water is stored; A filter assembly configured to collect foreign substances introduced into the sump; It includes; a water flow generating member for generating a rotary water flow inside the sump to separate the foreign matter attached to the filter assembly.

By such a configuration, the filter assembly is automatically cleaned in the drainage process, there is an advantage that the user does not need to clean the filter assembly by hand.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

1 is a perspective view showing the structure of a dish washer according to the spirit of the present invention.

Referring to FIG. 1, a dishwasher 10 according to the present invention is protected by a cabinet 11 forming an exterior, a top table 17 covering an upper surface of the cabinet 11, and the cabinet 11. The tub 18 includes a tub 18 having a washing tank formed therein, a door 12 that opens and closes the front opening of the cabinet 11, and a dish rack that is retractable from the tub 18.

In detail, the dish rack includes an upper rack 15 located above the tub 18 and a lower rack 14 located below the tub. In addition, the tub is provided with a spray nozzle for spraying the washing water, and the spray nozzle has a top nozzle (not shown) mounted on the ceiling of the lower nozzle 16, the upper nozzle 15, and the tub 18. Included.

In addition, a lower sump 19 (see FIG. 2) in which the washing water is stored is mounted below the tub 18, and a filter assembly 100 filtering the foreign matter is installed in the sump 19. In addition, a cover filter 182 having holes of a predetermined size is mounted on the bottom surface 181 of the tub 18 on which the sump 19 is mounted.

Referring to the operation of the dishwasher 10 having the configuration described above, the user first stores the dishes in the upper rack 13 or the lower rack 14 and closes the door 12. Then, when the operation button is pressed, the washing water is introduced into the sump 19, and the introduced washing water is pumped by a washing pump (not shown) and sprayed into the spray nozzle. Then, the washing water sprayed through the spray nozzle hits the surface of the tableware so that foreign matters on the tableware fall onto the tub bottom surface 181. In addition, the washing water falling to the tub bottom surface 181 is re-introduced into the sump 19 through a hole formed in the cover filter 182. In addition, the foreign matter included in the washing water is caught by the cover filter 182 or is introduced into the filter assembly 100 and filtered. Here, the tub bottom surface 181 is formed to be slightly inclined toward the filter assembly 100 to form a structure to allow the washing water and foreign substances to flow into the filter assembly 100. Therefore, foreign matter is filtered by the filter assembly 100 and the cover filter 182, and only the washing water flows into the sump. In addition, the washing water introduced into the sump is pumped by the washing pump and sprayed to the spray nozzle is repeatedly performed during the washing process.

In addition, when the entire process of cleaning is finished, the user disassembles and cleans the filter assembly 100 at regular intervals, and the sump inside is kept clean.

Figure 2 is an exploded perspective view showing a coupling structure of the filter assembly and the sump according to the spirit of the present invention.

Referring to FIG. 2, the filter assembly 100 according to the present invention has a structure in which three filters are combined.

In detail, the filter assembly 100 includes an inner filter 110, a middle filter 120 coupled to an outer circumference of the inner filter 120, and an outer filter 130 coupled to an outer circumference of the middle filter 120. Is done.

In more detail, the inner filter 110 is formed of a plastic injection molding, and a plurality of large holes are formed in the outer circumference. In addition, a plurality of ribs are formed on the bottom surface of the inter filter 110 to form holes having a predetermined size. Therefore, the bulky foreign matter is caught by the inner filter 110. In addition, the inner part of the filter 110 is protruded from the tub bottom surface 181 so that the user can easily separate by hand. Therefore, the user can separate and clean the inner filter 110 from the tub bottom surface 181 at regular intervals.

In addition, the middle filter 120 has holes of a smaller size than the holes formed in the inner filter 110 on the outer circumferential surface thereof at regular intervals. Therefore, the foreign matter passing through the inner filter 110 is caught by the middle filter 120.

In detail, the inner filter 110 is hooked inside the middle filter 120 to form a structure that can be easily separated from the middle filter 120. In addition, the middle filter 120 forms a structure coupled to the cover filter 182.

On the other hand, the outer filter 130 is coupled to the outer circumference of the middle filter 120. In detail, the outer filter 130 is a mesh net in which fine holes are densely arranged so that foreign matters of a small size not filtered by the inner filter 110 and the middle filter 120 are filtered out.

By the configuration as described above, foreign matter falling to the tub bottom surface 181 is filtered by the filter assembly 100, only the wash water passes through the filter assembly 100. In addition, the passed washing water is repeatedly moved to the washing pump and re-injected into the tub through the spray nozzle. Then, in the process of the cleaning process is completed and the drainage is performed, the foreign matter caught in the outer filter 130 of the foreign matter caught in the filter assembly 100 is discharged to the outside in the drainage process.

Hereinafter, a structure for allowing the foreign matter caught in the outer filter 130 to be smoothly discharged in the drainage process will be described in detail with reference to the accompanying drawings.

3 is a partial cross-sectional view showing a sump structure according to the spirit of the present invention.

Referring to FIG. 3, the sump 19 is coupled to the bottom of the tub bottom 181. In addition, the cover filter 182 is positioned above the sump 19 to allow the washing water to fall into the sump 19.

In detail, the filter assembly 100 is mounted on one side of the sump 19, and the middle filter 120 constituting the filter assembly 100 is coupled to the cover filter 182. In addition, the inner filter 110 is detachably coupled to the inside of the middle filter 120. In addition, the outer filter 130 is coupled to the outside of the middle filter 120, and the bottom surface of the sump 19 is formed to be stepped to a little depth so that the bottom surface of the filter assembly 100 is in close contact. In addition, a cylindrical sleeve 192 having a predetermined diameter extends from a lower end portion of the sump 19, that is, the stepped portion 194, and the sleeve 192 has a tub 18 seated thereon. It is fixed to the base 24. In detail, the sleeve 192 is secured by a protrusion 241 extending to the upper surface of the base 24. In addition, a hollow part is formed in the sleeve 192, and the inside of the sleeve 192 has a shape blocked by the diaphragm 193.

Meanwhile, a blade 31 generating a rotational force is installed in a space from the stepped portion 194 to the diaphragm 193, and the blade 31 is mounted on the lower end of the diaphragm 193. To rotate. In addition, a drainage hole 191 is formed at one side of the sleeve 192, and the drainage hole 191 communicates with the drainage pump 20.

In detail, the drain pump 20 includes a pump case 22 having a predetermined volume and an impeller 21 rotating inside the pump case 22. In addition, the impeller 21 is rotated by the driving of the drainage motor 23.

According to the sump structure having the above configuration, when the drainage is started and the drainage motor 23 is operated, the motor 30 connected to the blade 31 is also rotated at the same time.

In detail, when the blade 31 rotates, the washing water contained in the sump 19 rotates to cause a vortex. In other words, centripetal force acts on the washing water by the rotation of the blade 31. In addition, due to the centripetal force, the center of rotation of the washing water, that is, the center of the blade 31 is lowered. Thus, inside the sump 19 a conical vortex as shown is formed. In addition, the foreign matter of a fine size inserted in the outer filter 130 is separated by the centripetal force. Then, the separated foreign matter is collected toward the center of the filter assembly 100. In addition, due to the centripetal force generated by the rotation of the blade 31 in the drainage process, foreign matter separated from the outer filter 130 is moved to the drain pump 20 through the drain hole 191 together with the washing water. . Therefore, even if the outer filter 130 is not cleaned separately, the foreign matter is automatically removed so that the filter assembly 100 maintains the kyunging state. In addition, foreign matters caught by the inner filter 110 and the middle filter 120 need only be cleaned by the user by separating the inner filter 110.

On the other hand, the blade 31 is not limited in shape or type, it turns out that all the rotating member that can generate a rotational force is applicable. In addition, the motor 30 driving the blade 31 may be programmed to simultaneously drive the drainage motor 23 so that the motor 30 is always driven in the drainage process.

By the dishwasher according to the present invention having the above configuration, there is an effect that the fine foreign matter caught in the filter assembly is completely discharged in the draining process.

In addition, since the filter assembly is cleaned at the same time during the drainage process, fine foreign matter is discharged together, so that the user does not need to clean the filter assembly frequently by hand, thereby increasing customer satisfaction.

Furthermore, the phenomenon in which the filter is clogged by the fine foreign matter is eliminated, the backflow of the washing water is prevented, and the failure of the washing pump or the clogging of the spray nozzle is eliminated, thereby increasing the reliability of the product.

Claims (8)

Sump in which washing water is stored; A filter assembly configured to collect foreign substances introduced into the sump; And a water flow generating member generating rotary water flow inside the sump to separate foreign matter attached to the filter assembly. The method of claim 1, The water flow generating member is a blade rotatably installed at the lower end of the filter assembly, Dishwasher comprising a motor for driving the blade. The method of claim 1, Further comprising a drain pump for draining the washing water in the sump, One side of the sump on which the filter is seated, the dishwasher, characterized in that the communication hole is formed in communication with the drain pump. The method of claim 1, The foreign matter attached to the filter assembly is separated by the centripetal force generated by the water flow generating member, the dishwasher, characterized in that toward the center of the filter assembly. The method of claim 1, The filter assembly includes an inner filter for catching bulky foreign matter, A middle filter coupled to an outer circumference of the inner filter to take a foreign substance having a smaller volume than foreign substances filtered by the inner filter; A dishwasher including an outer filter that catches fine foreign matter smaller than the foreign matter filtered by the middle filter. The method of claim 5, The outer filter is a dishwasher, characterized in that the mesh. The method of claim 5, The foreign matter attached to the outer filter is separated by the centripetal force generated by the water flow generating member, the foreign matter separated from the outer filter is discharged to the outside in the drainage process. The method of claim 1, And the water flow generating member operates in a draining process.

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