KR20140106007A - Drain device for washing machine - Google Patents

Abstract

The present invention relating to a drain device for a washing machine comprises a housing unit with a water inlet and a water outlet; a filter unit inserted in the housing unit and allowing water introduced into the water inlet to pass therethrough; a cover unit opening or covering the filter unit; and a pump unit installed in the housing unit and leading the used water which has passed through the filter unit to the water outlet. A space formed between the housing unit and the filter unit filters foreign materials, thereby preventing damage to the pump unit caused by the foreign materials.

Description

[0001] DRAIN DEVICE FOR WASHING MACHINE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drainage apparatus for a washing machine, and more particularly to a drainage apparatus for a washing machine in which efficiency of a foreign matter filter is improved while maintaining drainage performance.

Generally, the automatic washing machine is a product that removes contaminants such as clothing and bedding by using the friction and impact of the water stream due to the emulsifying action of the detergent and the rotation of the washing blade.

The automatic washing machine senses the amount and type of laundry by the sensor, automatically sets the washing method, and performs washing by microprocessor control after water supply to an appropriate level according to the amount and kind of laundry.

The automatic washing machine is equipped with a storage tank for storing wash water inside an outer case forming an outer appearance, and a washing tub having a plurality of dewatering holes is rotatably installed inside the storage tank.

A washing blade is rotatably installed in the lower center of the washing tub, and a driving device including a clutch and a motor for rotating the washing tub and the washing blade is installed in the lower part of the storage tank.

The drainage device for a fully automatic washing machine filters foreign substances while discharging the washing water stored in the storage tank to the outside.

That is, the washing water stored in the storage tank is discharged from the storage tank through the drain pipe, and then discharged to the outside of the washing machine by the pump. At this time, the filter is disposed on the movement path of the washing water to filter foreign matter.

On the other hand, the background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 1996-041482 (published Dec. 19, 1996, entitled "Fully Automatic Washing Machine").

The conventional drainage device for a washing machine can not smoothly filter out foreign matter, so that there is a problem that the frequency of foreign matter reaching the pump through the filter is high.

Particularly, when a foreign object such as a coin reaches the pump, there is a problem of damaging the pump by restricting the impeller driving of the pump.

Therefore, there is a need to improve this.

It is an object of the present invention to provide a drainage device for a washing machine, which improves a foreign matter removing performance while maintaining drainage performance.

A drainage device for a washing machine according to the present invention includes: a housing part having a water inlet and a water outlet; A filter unit inserted into the housing unit and passing washing water flowing through the inlet port; A lid part for opening and closing the filter part; And a pump unit mounted on the housing unit and guiding the wash water having passed through the filter unit to the outflow port, wherein a foreign matter is filtered in a space formed between the housing unit and the filter unit.

Wherein the housing part comprises: an inlet pipe through which the washing water is introduced by forming the inlet port; An insertion tube communicating with the inflow tube and into which the filter section is inserted; A connection pipe communicating with the insertion tube to guide wash water; A pump tube communicating with the connection pipe and having one side opened to insert the pump portion; And an outlet pipe communicating with the pump tube and having the outlet port formed therein.

Wherein the filter unit comprises: a contact unit that is in close contact with the housing unit; An engaging portion spaced apart from the contact portion and engaged with the lid portion; And a filtration unit connecting the contact unit and the coupling unit and spaced apart from the inner surface of the housing unit to filter out foreign substances.

The contact portion includes a contact plate which is in close contact with the inside of the housing portion; And a contact protrusion protruding from the contact plate, the contact protrusion being inserted into an insertion groove formed in the housing part and designating an installation position.

The contact portion may further include a contact surface formed on the contact plate, the contact surface being blocked by the insertion protrusion protruding from the housing portion to restrict the flow.

Wherein the filter unit includes a filtering plate which covers one side of the filter unit by connecting the contact unit and the coupling unit, has a filtration hole for passing wash water, and is disposed apart from the inner side surface of the housing unit; And a filtration bar formed at an end of the filtration plate and closely contacting the inside of the housing part.

The filtration unit may further include a guide bar formed inside the filter plate and guiding the wash water to the filtration hole.

The filtration unit may further include a filtration protrusion protruding from the outside of the filtration plate and preventing foreign matter contained in the wash water from moving to the connection pipe.

Wherein the filtration protrusion has a cross shape.

The drainage device for washing machine according to the present invention has the effect of preventing foreign matters such as coins and clips from being caught in the space formed between the filter part and the insertion tube and damaging the pump part due to them.

In the drainage device for a washing machine according to the present invention, the contact protrusion is seated in an insertion groove formed in the insertion tube, so that an installation position of the filter part is designated.

The drainage device for a washing machine according to the present invention has an effect that the flow of the filter part is limited since the contact surface formed on the contact plate is caught by the insertion step formed in the insertion tube.

The drainage device for a washing machine according to the present invention has an effect that the vortex of the washing water flowing into the filter portion by the guide bar is suppressed and is moved to the filtering hole.

In the drainage device for washing machine according to the present invention, the filtration protrusions protrude from the connection pipe to filter the foreign substances flowing into the connection pipe.

1 is a view schematically showing a drainage apparatus for a washing machine according to an embodiment of the present invention.
2 is a view schematically showing a housing part of a drainage device for a washing machine according to an embodiment of the present invention.
3 is a front view schematically showing a front portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.
4 is a perspective view schematically showing a front portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.
5 is a front view schematically showing a rear portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.
6 is a perspective view schematically showing a rear portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.
7 is a view schematically showing a flow of washing water passing through a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a washing machine drainage apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a view schematically showing a drainage device for a washing machine according to an embodiment of the present invention, and FIG. 2 is a view schematically showing a housing part of a drainage device for a washing machine according to an embodiment of the present invention.

FIG. 3 is a front view schematically showing a front portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention, FIG. 4 is a perspective view schematically showing a front portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention, to be.

FIG. 5 is a front view schematically showing a rear portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention, FIG. 6 is a perspective view schematically showing a rear portion of a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention, to be.

7 is a view schematically showing a flow of washing water passing through a filter unit in a washing machine drainage apparatus according to an embodiment of the present invention.

1 and 2, a washing machine drainage apparatus 1 according to an embodiment of the present invention includes a housing unit 10, a filter unit 20, a lid unit 30 and a pump unit 40, .

The housing part 10 is provided with a water inlet 101 and a water outlet 102 to discharge washing water discharged from a water storage tank (not shown) to the outside of the washing machine.

At this time, a water inlet pipe 101 for guiding the washing water stored in the water storage tank to the housing unit 10 is connected to the inlet 101, and washing water having passed through the housing unit 10 is guided to the outside of the washing machine A water pipe 202 is connected.

The filter unit 20 is inserted into the housing unit 10 and allows the washing water flowing through the inlet 101 to pass therethrough.

The outside of the filter portion 20 and the inside of the housing portion 10 are spaced apart from each other. A part of the washing water moved to the space formed between the filter unit 20 and the housing unit 10 does not pass through the space formed between the filter unit 20 and the housing unit 10 so that the foreign matter is filtered.

That is, the foreign matter having the same size as the coin or clip is difficult to flow into the space formed between the filter unit 20 and the housing unit 10, and these foreign matter remains in the filter unit 20.

The lid part 30 opens and closes the filter part 20. The lid 30 is exposed to the outside of the washing machine, and the user operates the lid 30 to open and close the filter 20.

The pump unit 40 is mounted to the housing unit 10 and guides the washing water having passed through the filter unit 20 to the outlet port 102.

For example, the pump unit 40 is provided with an impeller which is inserted into the housing unit 10 to forcibly move the washing water, and a pump motor that rotates the impeller.

The housing part 10 according to an embodiment of the present invention is provided with an inflow pipe 11, an insertion pipe 12, a connection pipe 13, a pump pipe 14 and an outlet pipe 15.

At this time, the portion of the washing machine facing the user is referred to as the front surface of the washing machine, and the positional relationship of the housing portion 10 will be described.

An inlet pipe 101 is formed at one end of the inlet pipe 11 and an inlet pipe 201 is connected to the inlet pipe 101. For example, the inlet pipe 11 is formed to have a length in the front-rear direction of the washing machine, and the inlet 101 is formed at the rear end.

The insertion tube 12 is disposed on one side of the inflow tube 11. Since the insertion tube 12 communicates with the inflow tube 11, the washing water having passed through the inflow tube 11 is transferred to the insertion tube 12. For example, the insertion tube 12 is disposed on the right side of the inflow pipe 11 with reference to Fig. 1, and is formed to have a length in the front-rear direction of the washing machine.

The front end of the insertion tube 12 is opened and exposed to the outside of the front cabinet of the washing machine. The front end of the insertion tube 12 is engaged with the front cabinet of the washing machine.

The connection tube 13 is disposed at one side of the insertion tube 12 and communicates with the insertion tube 12. [ For example, the connecting tube 13 is formed to have a length in the left-right direction of the washing machine, and the left end is connected to the insertion tube 12.

The connection tube 13 is formed with an air tube 131. The air tube 131 discharges the air formed on the washing water flow path to the outside, thereby suppressing the noise generated when the washing water is moved.

The pump tube 14 communicates with the connection pipe 13 and has a shape in which one side is opened so as to insert the pump unit 40.

For example, the pump tube 14 is provided with an extension body 141 communicating with the right end of the connection pipe 13, a mounting body 142 extending from the extension body 141 and on which the pump unit 40 is mounted, And a support body 143 extending from a lower portion of the mounting body 142 and supporting the bottom surface of the pump body 40.

The expansion body 141 has an inner diameter larger than that of the connection pipe 13 so that the impeller of the pump unit 40 is embedded to pump the washing water.

The mounting body 142 has a shape protruding rightward from the expander 141 and having a right end opened, and a portion opened by the pump unit 40 is covered.

The outflow pipe (15) is open at the other end to form an outlet port (102) and communicates with the pump pipe (14). An outflow pipe (202) is connected to the outflow port (102).

For example, the outflow pipe 15 communicates with the extension body 141, is formed to have a length in the front-rear direction of the washing machine, and has a water outlet 102 formed at the front end thereof.

3 to 7, the filter unit 20 according to an embodiment of the present invention includes a contact unit 21, a coupling unit 22, and a filtration unit 23.

At this time, the portion of the washing machine facing the user is referred to as the front surface of the washing machine, and the positional relationship of the filter portion 20 will be described.

The filter portion 20 is formed to have a length in the front-rear direction of the washing machine, and the contact portion 21, the engaging portion 22, and the filtering portion 23 can be integrally injection-molded.

The contact portion 21 is in close contact with the housing portion 10. For example, in the housing portion 10, the insertion tube 12 has a cylindrical shape, and the contact portion 21 having a disk shape is in close contact with the inside of the rear end portion of the insertion tube 12.

The engaging portion 22 is disposed so as to be spaced apart from the abutting portion 21. The lid portion 30 is detachably attached to the engaging portion 22 (see Fig. 1).

The filtration part 23 connects the contact part 21 and the engaging part 22. A space is formed between the outer side of the filtration part 23 and the inner side of the insertion tube 12 to move the wash water.

Between the filtration part 23 and the insertion tube 12, a space having a size that restricts the passage of foreign substances such as coins and clips is formed.

The contact portion 21 according to an embodiment of the present invention includes a contact plate 211 and a contact protrusion 212.

The contact plate 211 is in close contact with the inner surface of the housing part 10. For example, the contact plate 211 is in the shape of a disk, and the rear end of the contact plate 211 is in close contact with the inner surface of the rear end of the insertion tube 12 having a closed tube shape.

The contact protrusion 212 protrudes from the contact plate 211 and is inserted into the insertion groove 122 formed in the housing portion 10 (see FIG. 2). For example, the insertion groove 122 is formed in the insertion tube 12.

When the contact protrusion 212 is inserted into the insertion groove 122, the installation position of the filter unit 20 can be fixedly set even if the filter unit 20 is frequently mounted on the insertion tube 12.

The contact portion 21 according to an embodiment of the present invention is further provided with a contact surface 213. The contact surface 213 is caught by the insertion step 123 formed on the inside of the housing part 10 to restrict the flow of the filter part 20.

For example, the contact surface 213, which is formed by cutting a part of the edge of the contact plate 211 having a disk shape, is engaged with the insertion jaw 123 protruding from the inner surface of the rear end of the insertion tube 12.

The filtration unit 23 according to an embodiment of the present invention is provided with a filtration plate 231 and a filtration bar 232.

The filtering plate 231 covers one side of the filter portion 20 by connecting the contact portion 21 and the engaging portion 22 and forms a filtration hole 233 for passing wash water. The filter plate 231 is spaced apart from the inner surface of the housing part 10.

For example, the filter plate 231 has a semi-cylindrical shape and is connected to the inside of the contact portion 21 and the engaging portion 22 to be spaced apart from the inner surface of the insertion tube 12. The washing water having passed through the filtration hole 233 is moved to a space formed between the insertion tube 12 and the filter plate 231.

The filter bar 232 is formed at the end of the filter plate 231 and is in close contact with the inside of the housing part 10. Both end portions of the filtration bar 232 are connected to the contact portion 21 and the engagement portion 22, respectively.

For example, the filtration bars 232 are arranged such that the pairs are facing each other. 3), and a portion where the outer surface of the filter plate 232 is visible is referred to as a rear surface portion of the filter portion 20 (refer to FIG. 3) (See FIG. 5).

The washing water flowing into the insertion tube 12 passes through the front portion of the filter unit 20 and then through the filtration hole 233 and then to the connection pipe 13. The foreign substances included in the washing water pass through the filtration holes 233 And is caught in a space formed between the filter plate 231 and the insertion tube 12 (see FIG. 7).

At this time, the contact portion 21, the coupling portion 22, and the filtration bar 232 are brought into close contact with the inner surface of the insertion tube 12 so that the washing water passes through the filtration hole 233, And is spaced apart from the inner surface of the insertion tube 12 to form a space by the movement of wash water.

The filter unit 23 according to an embodiment of the present invention further includes a guide bar 234. The guide bar 234 is formed inside the filter plate 231 and guides the washing water flowing through the inflow pipe 11 to the filtration hole 233.

For example, the guide bar 234 is formed to have a length in the direction of the engaging portion 22 from the abutting portion 21, thereby suppressing the washing water vortexing inside the filtering plate 231.

The end of the guide bar 234 is formed to have an inclination in the direction of the filtration hole 233 so that the washing water striking the guide bar 234 can be guided to the filtration hole 233.

In addition, since the guide bar 234 is protruded from the inside of the filter plate 231, the rigidity of the filter plate 231 in contact with the washing water can be increased.

The filtration part 23 according to an embodiment of the present invention is further provided with a filtration projection 235.

The filtration protrusions 235 protrude from the outside of the filter plate 231 and are arranged in line with the connection pipe 13 to prevent foreign substances contained in the washing water from moving to the connection pipe 13.

More specifically, the filtration protrusion 235 has a cross shape and protrudes toward the connection pipe 13, and is located at the inlet of the connection pipe 13. Since the filtration protrusion 235 has an effect of dividing the flow path of the connection pipe 13 into four equal parts, it is possible to prevent the foreign matter from passing through the connection pipe 13 and damaging the impeller of the pump unit 40.

For example, the filtration projection 235 is provided with a vertical projection 351 and a horizontal projection 352.

The vertical protrusion 351 protrudes from the contact portion 21 to have a length in the direction of the engaging portion 22 and the horizontal protrusion 352 protrudes across the vertical protrusion 351.

At this time, both ends of the vertical protrusion 351 are inclined so as to suppress eddy current of the washing water and guide the washing water to the connection pipe 13. [

On the other hand, the filtration protrusion 235 is further provided with a blocking protrusion 353. The blocking protrusion 353 is formed at the end of the vertical protrusion 351 to distribute the washing water having passed through the filtration hole 233 in both directions to suppress overflow of the washing water to the filtration protrusion 235.

At this time, the blocking protrusion 353 is formed to have a length corresponding to the vertical protrusion 351, facing the vertical protrusion 351, and having both ends inclined so as to suppress eddy current of the washing water.

The operation of the drainage device for a washing machine according to one embodiment of the present invention having the above-described structure will now be described.

The housing part 10 is mounted in the washing machine and the filter part 20 is incorporated in the housing part 10. The lid part 30 assembled to the filter part 20 is exposed to the outside, The filter unit 20 is operated by operating the filter unit 30 to remove the foreign matter filtered by the filter unit 20. [

The washing water stored in the water storage tank together with the start of drainage is introduced into the inflow pipe 11, the insertion pipe 12, the connection pipe 13, the pump pipe 14 and the outflow pipe 15), and then discharged to the outside of the washing machine.

At this time, a space is formed between the filter unit 20 inserted into the insertion tube 12 and the insertion tube 12, and a foreign substance such as a coin or a clip is caught in the space to damage the pump unit 40 prevent.

The filter process of the filter unit 20 according to the movement of the washing water will be described in more detail as follows.

3, 5 and 7, the washing water flowing through the inflow pipe 11 passes through the filtration hole 233 and flows between the outer surface of the filter plate 231 and the inner surface of the insertion tube 12 Passes through the space, and is moved to the connector pipe (13).

On the other hand, the guide bar 234 formed inside the filter plate 231 guides the washing water flowing into the filter plate 231 into the filtration hole 233.

That is, the washing water flowing through the inflow pipe 11 reaches the filtering plate 231 having a curvature to form a vortex, but it collides against the guide bar 234 formed at the center of the filtering plate 231, .

The washing water impinging on the guide bar 234 moves along the guide bar 234 and passes through the filtration hole 233.

The washing water having passed through the filtration hole 233 is transferred to the connection pipe 13 through the space between the filter plate 231 and the insertion tube 12.

At this time, foreign substances larger than the space between the outer surface of the filter plate 231 and the inner surface of the insertion tube 12 in the washing water remain in the filter unit 20 and are firstly filtered.

The filtration protrusion 235 formed on the outer side of the filter plate 231 is protruded so as to have a cross shape so as to divide the inlet of the connection tube 13 into four equal parts and is moved to a space between the filtration plate 231 and the insertion tube 12 Foreign matter caught on the filtration protrusion 235 of the laundry remains without being moved to the coupling pipe 13.

For example, even if a foreign substance such as a coin or a clip is moved through the space formed between the filter plate 231 and the insertion tube 12, the movement to the connection tube 13 is restricted by the filtration projection 235.

The filter bar 232 is closely attached to the inside of the insertion tube 12 so that the foreign matter caught by the filtration protrusion 235 passes through the filtration bar 232 and passes through the space formed between the filtration plate 231 and the insertion tube 12 .

When the user pulls the filter unit 20 out of the insertion tube 12, the foreign matter is discharged to the outside of the washing machine cabinet together with the filter unit 20 and removed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

10: housing part 11: inlet pipe
12: insertion tube 13: connector tube
14: pump tube 15: outlet tube
20: filter portion 21: contact portion
22: engaging portion 23: filtration portion
30: lid part 40: pump part
101: inlet 102: outlet
122: insertion groove 123: insertion jaw
201: incoming pipe 202: outgoing pipe
211: contact plate 212: contact projection
213: contact surface 231: filtration plate
232: Filtration bar 233: Filtration hole
234: guide bar 235: filtration projection
351: vertical projection 352: horizontal projection
353:

Claims (9)

A housing part in which a water inlet and a water outlet are formed;
A filter unit inserted into the housing unit and passing washing water flowing through the inlet port;
A lid part for opening and closing the filter part; And
And a pump unit mounted to the housing unit and guiding the wash water having passed through the filter unit to the outlet,
Wherein a foreign matter is filtered in a space formed between the housing part and the filter part.
2. The apparatus of claim 1, wherein the housing portion
An inlet pipe through which the washing water is introduced by forming the inlet port;
An insertion tube communicating with the inflow tube and into which the filter section is inserted;
A connection pipe communicating with the insertion tube to guide wash water;
A pump tube communicating with the connection pipe and having one side opened to insert the pump portion; And
And an outlet pipe communicating with the pump tube and having the outlet port formed therein.
The filter according to claim 1,
A contact portion which is brought into close contact with the housing portion;
An engaging portion spaced apart from the contact portion and engaged with the lid portion; And
And a filtration unit that connects the contact unit and the coupling unit and separates foreign matter from the inner surface of the housing unit.
4. The connector according to claim 3,
A contact plate in close contact with the inside of the housing portion; And
And a contact protrusion protruding from the contact plate and inserted into an insertion groove formed in the housing part to designate an installation position.
5. The connector according to claim 4, wherein the contact portion
Further comprising a contact surface formed on the contact plate, the contact surface being blocked by the insertion protrusion protruding from the housing part, thereby limiting the flow of the washing water.
The apparatus of claim 3, wherein the filtering unit
A filtering plate that covers one side of the filter unit by connecting the contact unit and the coupling unit, has a filtration hole for passing wash water, and is disposed apart from the inner side surface of the housing unit; And
And a filtration bar formed at an end of the filtration plate and closely contacting the inside of the housing part.
7. The filter according to claim 6,
And a guide bar formed on the inner side of the filter plate to guide the washing water to the filtering hole.
7. The filter according to claim 6,
Further comprising a filtration protrusion protruding from the outside of the filtration plate and preventing foreign matter contained in the wash water from moving to the connection pipe.
9. The method of claim 8,
Wherein the filtration protrusion has a cross shape.

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