KR101481521B1 - The filter apparatus of a washing machine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for a washing machine, and more particularly, to a filter device of a washing machine that efficiently removes foreign matter contained in washing water when washing laundry, and is easy to attach and detach from the washing machine.

The present invention relates to a filter device of a washing machine, which is formed on an inner wall of a washing tub and installed at a discharge port for discharging wash water, for filtering foreign substances contained in washing water pumped by the rotational force of the washing tub, And a detachable device installed on the cap for detachably attaching the filter device to the discharge port, wherein the filter device includes a cap having a plurality of spray holes for detachably attaching the filter device to the cap, Lt; / RTI >

A detachment device, a fitting ring,

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a filter device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device of a washing machine, and more particularly, to a filter device of a washing machine capable of efficiently filtering foreign matter contained in laundry when laundry is washed and preventing damage of laundry during washing.

1, a conventional washing machine includes a main body 5 of a washing machine and a water storage tank 70 provided inside the main body 5 to receive washing water and a washing tub 70 provided inside the water storage tank 70, A dewatering tank 80 for dewatering water and a pulsator 20 installed at a lower portion of the dewatering tank 80 to rotate and generate water flow and wash the laundry and the pulsator 20 to rotate the pulsator 20 And a driving device (50)

A water supply device 10 is installed on the upper part of the water storage tank 70 and wash water supplied from the water supply device 10 is supplied to the water storage tank 70. A drainage device 90 is installed below the water storage tank 70 And discharges the washing water to the outside through the drainage device 90.

A channel 80a is formed at one side of the inner wall of the dehydrator 80 so that the wash water at the bottom of the dehydrator 80 is circulated to the upper portion of the dehydrator 80 by the water flow generated by the rotation of the pulsator 20 And an injection port 80b is formed in the upper part of the flow path 80 so that wash water raised along the flow path 80a flows back into the dehydration tank 80. [ The jetting port (80) is provided with a filter (40) for filtering the foreign substances contained in the washing water.

In the conventional washing machine constructed as described above, the washing water that has risen along the flow path 80a due to the rotation of the pulsator 20 is separated from the washing water and foreign matter through the jetting port 80b and the water network 40, 80 are supplied with the filtered wash water.

However, in the conventional washing machine, since the reeling network 40 is protruded at a predetermined portion from the inner wall of the refrigerator, when the laundry is washed, the laundry network 40 collides with the laundry network 40 and the reeling network 40 is easily worn or torn, ) And the garment can be caught in the dirt and be damaged.

In addition, only the foreign matters included in the washing water can be filtered by the filter net 40, and the washing water passing through the filtering net 40 can not be dropped into the washing tub 80, Such as washing or rinsing of the laundry.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems described above, and it is an object of the present invention to provide a filter device having an integrated filter device, which improves the filtering efficiency of the washing water, A washing machine filter device is provided.

The present invention also provides a washing machine filter device that is easy to attach and detach from a washing machine.

In order to solve the above problems, there is provided a filter device of a washing machine installed at a discharge port formed in an inner wall of a washing tub for filtering foreign substances contained in washing water pumped by the rotational force of the washing tub, A cap having a plurality of injection holes; A sealing type filter unit coupled to the cap so as to be attached to and detached from the cap to filter the foreign matter; And a detachable device installed on the cap to detach the filter device from the discharge port.

Preferably, the injection hole is formed in a round shape. The cap includes a cap body having a plurality of injection holes formed therein, and a cap rib formed to extend rearward along a rim of the cap body to insert the hermetically- .

In addition, it is preferable that the cap rib is formed to extend outward.

The detachable device includes a detachable portion that is fitted to the insertion groove formed in the cap so that the filter device is detachable from the discharge port, and a fitting ring extending from the detachable portion and fitted to the inner peripheral surface of the cap.

In order to maintain a predetermined distance in the radial direction between the cap and the fitting ring, a plurality of protrusions spaced apart from each other by a predetermined distance may be formed on the outer circumferential surface of the fitting ring, and the fitting ring may be made of a soft material .

The detachable portion may be formed as a hook, and the hook includes a pressing portion for pressing a force by the user when the filter device is attached to or detached from the discharge port, and an insertion portion extending from the pressing portion to be inserted into the discharge port.

The upper surface of the pressing portion may be provided with concave and convex portions, the rim of the insertion portion may be formed substantially in a curved shape, and a lower portion of the insertion groove formed in the cap may have a locking protrusion for restricting the movement of the pressing portion.

In addition, it is preferable that the filter device and the discharge port are formed in the same symmetrical structure in the upper and lower parts and the left and right sides.

The present invention provides an integrated closed filter device to improve the filter function of the washing water and to prevent damage to the filter device and the laundry.

In addition, the washing efficiency can be improved by spraying washing water on the laundry, and when the user removes the filter device from the washing machine, it is easy to attach and detach the washing machine from the filter device.

The present invention is applicable to a washing machine, and the washing machine can be applied to various types of washing machines such as a pulsator and a vertical axis type in which a washing tub is rotated. Hereinafter, the present invention will be described by way of example with reference to a vertical axis type washing machine in which a pulsator rotates.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing the internal construction of a washing machine provided with a tether according to the prior art, FIG. 2 is a view showing the internal structure of a washing machine equipped with the washing machine filter device according to the present invention, FIG. 4A is a perspective view illustrating a closed filter unit of the washing machine filter device according to the present invention in a closed state. FIG.

FIG. 4B is a perspective view showing a state in which the closed filter unit of the washing machine filter device according to the present invention is opened, FIG. 5 is a view showing a state before the cap and the closed filter unit are coupled, FIG. 6 is a view showing a cap of a washing machine filter device according to the present invention, FIG. 7 is a view showing a detachment device installed in a cap of a washing machine filter device according to the present invention, FIG. 8 is a rear view of the cap shown in FIG. And FIG. 9 is a rear view of the washing machine filter device according to the present invention.

2, the washing machine 100 according to the present invention includes a main body 50 for forming an outer appearance, a washing tub 800 provided inside the main tub 50 for rotating the laundry around the vertical axis, And a water storage tank 700 installed outside the water storage tank 700 to receive wash water.

A pulsator 120 is installed on the lower side of the washing tub 800 so that the washing water rises to the upper portion of the circulating flow path 800a through the circulation flow path 800a from below the pulsator 120. [ The washing tub 800 and the pulsator 120 are rotated by a driving unit 500 and a shaft unit 600 installed below the water storage tank 700.

The discharge port 820 is formed on one side of the inner wall of the washing tub 800 so that the washing water raised along the circulating flow path 800a is pumped into the washing tub 800 by the pumping pressure.

 A water supply device 150 connected to an external water supply source is installed on the upper part of the water storage tank 700 to supply wash water to the water storage tank 700.

The filter device 400 may be detachably installed at the discharge port to filter the foreign substances contained in the washing water sprayed into the washing tub 800 along the discharge port 820.

The filter device 400 will be described below with reference to FIGS. 3 to 6. FIG.

The filter device 400 includes a cap 200 for spraying washing water to the washing tub 800 and a hermetically sealed filter unit 300 detachably coupled to the cap to filter foreign substances, (250) for attaching / detaching the cartridge (400) to / from the discharge port.

The washing machine filter device 400 according to the present invention may have a circular cap body 214 and a cap body 214 to be associated with the hermetic filter unit 300. [ And a cap rib 216 formed to extend rearward along the rim and to interpose the hermetically sealed filter unit 300 therebetween.

The cap body 214 has a plurality of spray holes 210 radially formed at predetermined intervals to strongly spray the washing water into the washing tub 800 so that the laundry can be washed by giving an impact to the laundry.

In addition, when the laundry in the washing tub 800 is washed, the laundry 200 contacts the laundry while the laundry rotates. Accordingly, since the laundry may be damaged when the cap 200 is in contact with the laundry, the laundry may be prevented from being damaged by rounding the periphery of the injection hole 210.

 4A and 4B, the hermetically-sealed filter unit 300 is hermetically sealed with the front cover 320 and the front cover 320 for separating the foreign substances contained in the washing water, And a rear cover 340. The front cover 320 and the rear cover 340 are pivotally coupled to each other to open and close the front cover 320 and the rear cover 340. The hinge member 330 is disposed between the front cover 320 and the rear cover 340, And the rear cover 340 can be opened and closed.

The front cover 320 is formed of a mesh 322 and separates and filters the foreign substances contained in the washing water when the washing water passes through the front cover 320. The washing water flowing through the discharge opening passes through the rear cover 340, An inlet port 342 may be formed to allow the gas to flow into the interior of the chamber 340.

 The filter device 400 of the washing machine according to the present invention further includes a detachable device 250 provided between the cap 200 and the hermetic filter unit 300 to detach the filter device 400 from the discharge port .

The structure of the detachable device 250 will be described with reference to FIGS. 7 to 9. FIG.

The detachable device 250 is inserted into the cap ribs 216 of the cap 200 so that the detachable portion 240 is detached from the detachable portion 240 to allow the filter device 400 to be detached from the detachable portion 820, And a fitting ring 230 which is formed to be fitted into the cap 200.

8, the cap ribs 216 formed on the upper and lower sides of the cap body 214 are formed with insertion grooves 205 for the corresponding insertion / removal portions 240 to be correspondingly inserted into the cap ribs 216. As shown in FIG. And the detachable portion 240 is inserted into the insertion groove 205 and inserted.

The detachable unit 240 may be detachable from the detachable unit 240. The detachable unit 240 may be detachable from the detachable unit 240. The detachable unit 240 may be detachable from the detachable unit 240, respectively.

The hook device 240 includes a pressing part 243 for pressing a force by the user when the filter device 400 is attached to or detached from the discharge port 820 and a detachable groove 242 formed on the discharge port 820, 825, respectively.

The pressing portion 243 is a portion in which the user presses the force in the vertical direction to separate or join the filter device 400 installed at the discharge port 820 at the discharge port 820.

The upper surface of the pressing portion 243 is formed with a plurality of protrusions 243a, so that slipping can be prevented when the user holds the pressing portion 243.

The insertion portion 245 extends from the pressing portion 243 and is inserted into the attachment / detachment groove 825 formed in the ejection port 820 and inserted into the attachment / detachment groove 825 formed in the ejection port 820 The rim of the insertion portion 245 is preferably round-processed.

On the other hand, in the lower portion of the insertion groove 205 formed in the cap rib 216, a locking protrusion 207 for limiting the movement of the pressing portion 243 is formed when a user applies a force to the pressing portion 243 .

When the user presses the pressing portion 243 in the vertical direction when the user removes the filter device 420 mounted on the discharge port 820 from the discharge port 820, 207 are formed so that the pressing portion 243 can be restricted to move only a certain distance.

The pressing portion 243 of the detachable device 250 is provided so as to protrude from the inner wall of the washing tub 800 to press the pressing portion 243 when the user removes the filter device 400 and presses the pressing portion 243 The insertion portion 245 extending from the insertion opening 820 is inserted into or detached from the attachment / detachment groove 825 formed in the ejection opening 820.

9, the fitting ring 230 constituting the attaching / detaching device 250 is formed in a ring shape in which two detachable portions 240 are connected to each other. The fitting ring 230 is formed on the rear surface of the cap 200, that is, As shown in Fig. Further, a hermetic filter unit 300 is inserted and fitted in the inner peripheral surface of the fitting ring 230.

Therefore, the fitting ring 230 is positioned between the inner circumferential surface of the cap 200 and the outer circumferential surface of the hermetic filter unit 300, and the fitting ring 230 prevents the hermetic filter unit 300 from being detached from the cap 200 It is preferable that the filter unit 300 is formed of a soft material such as rubber or plastic so that the filter unit 300 can be fitted easily.

A plurality of protrusions 235 spaced at predetermined intervals in the radial direction may be formed along the circumference of the outer peripheral surface of the fitting ring 230. The protrusion 235 is formed to maintain a predetermined distance between the inner circumferential surface of the cap 200 and the outer circumferential surface of the fitting ring 230 without being completely close to each other.

When the hermetically sealed filter unit 300 is inserted into the inner circumferential surface of the fitting ring 230, the fitting ring 230 made of a flexible material can be stretched in the radial direction of the fitting ring 230 by the tensile force, A predetermined interval is maintained between the outer circumferential surface of the fitting ring 230 and the outer circumferential surface of the fitting ring 230 so that the user can easily fit the hermetic filter unit 300.

In addition, after the user inserts the hermetically-sealed filter unit 300 into the fitting ring 230, the hermetic filter unit 300 is not removed from the cap 200 by the compressive force of the fitting ring 230.

 3, the filter device 400 and the discharge port 820 formed on the inner wall of the washing tub 800 are formed to be symmetrical with respect to the upper and lower sides and the left and right sides, It is possible to attach and detach it to the discharge port 820 by rotating it by 180 degrees.

Hereinafter, a process and an operation of attaching and detaching the washing machine filter device 400 according to the present invention to the washing machine will be described.

First, a process in which the user removes the washing machine filter device 400 from the washing machine will be described.

First, the user joins the filter device 400 of the washing machine to the discharge port 820 formed in the inner wall of the washing tub 800. [

The user inserts the insertion portion 245 into the attachment / detachment groove 825 formed in the discharge port 820 while pressing the pressing portion 243.

When the filter device 400 is coupled to the discharge port 820, the outside of the filter device 400 is surrounded by the cap 200, and the cap rib 216 is formed to be inclined outwardly, .

The gap between the outer peripheral surface of the discharge port 820 and the outer peripheral surface of the cap 200, that is, the outer peripheral surface of the cap rib 216 and the outer peripheral surface of the discharge port 820 is reduced, .

When the user separates the filter device 400 from the discharge port 820, the user removes the insertion portion 245 from the attachment / detachment groove 825 formed in the discharge port 820 while pressing the pressing portion 243 So that the filter device 400 is separated from the discharge port 820.

First, the user joins the filter device 400 of the washing machine to the discharge port 820 formed in the inner wall of the washing tub.

The pulsator 120 is rotated by the driving device 500 during the washing and rinsing process and the washing water is formed by the rotating force of the pulsator 120 so as to form a strong water flow radially, The washing water rises to the upper side of the circulating flow path 800a through the flow path 800a and the washing water is circulated through the discharge port 820 formed in the circulation flow path 800 and the filter device 400 installed in the discharge port 820, Respectively.

At this time, the washing water having passed through the discharge port 820 flows into the sealed filter unit 300 through the inlet port 342 formed in the rear cover 340 of the closed filter unit 300. The foreign substances contained in the washing water are filtered by the mesh 322 formed in the front cover 320. [

 At this time, the periphery of the front cover 320 and the rear cover 340 constituting the hermetic filter unit 300 includes a first rib 324 formed on the front cover 320 and a second rib 324 formed on the rear cover 340. [ The outer peripheral surface of the hermetic type filter unit 300 is hermetically sealed by the hermetic type filter unit 344 so that the foreign matter filtered inside the hermetic type filter unit 300 is not leaked to the outside.

The channel ribs 343 are formed around the inlet port 342 to form a flow path through which the washing water flows into the closed filter unit 300 and prevent the reverse flow through the inlet port 342. [

On the other hand, the washing water having passed through the closed filter unit 300 is injected into the washing tub through the spray hole 210 formed in the cap 200. In the cap 200, a plurality of spray holes 210 may be formed to provide a strong spray pressure to the laundry contained in the washing tub 800, thereby increasing washing efficiency and rinsing efficiency of the laundry.

In addition, the filter device 400 of the washing machine according to the present invention can prevent the damage of the clothes or the filter device due to rounding of the injection hole 210 formed in the cap 200 even when the filter device 400 contacts the laundry in the washing process .

It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

1 is a view showing an internal configuration of a washing machine provided with a dirt net according to a conventional invention

2 is a view showing the internal structure of a washing machine provided with a washing machine filter device according to the present invention

3 is a perspective view showing a state before the washing machine filter device according to the present invention is separated and mounted in the washing machine.

4A is a perspective view showing a closed filter unit of the washing machine filter device according to the present invention in a closed state.

4B is a perspective view showing a state in which the hermetic type filter unit of the washing machine filter device according to the present invention is opened.

5 is a view showing a state before the cap and the closed filter unit of the washing machine filter device according to the present invention are joined together

6 is a view showing a cap of a washing machine filter device according to the present invention

7 is a view showing a detachable device installed in a cap of a washing machine filter device according to the present invention

Fig. 8 is a perspective view showing the rear side of the cap of Fig.

9 is a rear view of the washing machine filter device according to the present invention

Description of the Related Art [0002]

200: cap 205: insertion groove

207: jaw jaw 210: injection hole

214: cap body 216: cap rib

230: fitting ring 235: projection

240: detachable portion 243: pressing portion

245: Insertion part 300: Hermetic filter unit

320: front cover 324: first rib

330: hinge portion 340: rear cover

342: Inlet port 343:

344: second rib 400: filter device

820: Discharge port 825:

Claims (12)

A filter device for a washing machine provided in a discharge port formed in an inner wall of a washing tub for filtering foreign substances contained in washing water pumped by a rotational force of a washing tub, A cap having a plurality of spray holes formed at predetermined intervals in a radial direction for spraying washing water to the washing tub; A sealing type filter unit coupled to the cap so as to be attached to and detached from the cap to filter the foreign matter; And And a detachment device installed on the cap to detach the filter device from the discharge port, Wherein the hermetically sealed filter unit includes a front cover having a front surface formed by a mesh, and a rear cover provided to press the front cover, Wherein the rear cover includes an inlet for introducing the washing water into the inside of the closed filter unit and a flow rib formed around the inlet for forming the flow path of the washing water. The method according to claim 1, Wherein the injection hole is formed in a round shape. The method according to claim 1, Wherein the cap includes a cap body having a plurality of jet holes formed therein and a cap rib extending rearward along a rim of the cap body to sandwich the closed filter unit. The method of claim 3, Wherein the cap rib is formed outwardly. The method of claim 3, Wherein the detachable device includes a detachable portion fitted to the insertion groove formed in the cap so that the filter device is detachable from the discharge port and a fitting ring extending from the detachable portion and fitted to the inner peripheral surface of the cap. Washing machine filter device. 6. The method of claim 5, And a plurality of protrusions spaced apart from each other by a predetermined distance are formed on the outer circumferential surface of the fitting ring to maintain a predetermined distance in the radial direction between the cap and the fitting ring. 6. The method of claim 5, Wherein the fitting ring is formed of a soft material. 6. The method of claim 5, Wherein the detachable portion is a hook. 9. The method of claim 8, Wherein the hook includes a pressing portion for pressing a force when the filter device is attached to or detached from the discharge port, and an insertion portion extending from the pressing portion and inserted into the discharge port. 10. The method of claim 9, Wherein a concave and a convex are formed on an upper surface of the pressing portion, and a rim of the insertion portion is formed in a substantially curved shape. 10. The method of claim 9, Wherein a lower portion of the insertion groove formed in the cap is formed with a latching protrusion for restricting movement of the pressing portion. The method according to claim 1, Wherein the filter device and the discharge port are symmetrically formed in the upper and lower portions and the left and right sides.

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