KR20030012679A - Filtering device of washing machine - Google Patents

Abstract

PURPOSE: A filtering device of a washing machine is provided to increase the impurity collecting efficiency by introducing a larger amount of water into the filtering unit and simplify the cleaning of the filter case. CONSTITUTION: A filtering device of washing machine includes a filter case mounted to a side surface of a washing tub for guiding the lifting of water and having an oval filter coupling hole, a filter having oval front and rear bodies(100a,100b) coupled together, a mesh(104) provided to a grid between the front and rear bodies, and water inlets formed to side surfaces of the front and rear bodies, and a check valve(105) provided to the inside of the filter for preventing the backflow of the lifting water.

Description

Filtering device of washing machine

The present invention relates to a washing machine, and more particularly, to improve the structure of the foreign matter filtering device that filters foreign matters such as lint during washing so that a larger amount of washing water is introduced into the filter and the filter case is easily cleaned. It is.

In general, a washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of detergent, friction action of water flow caused by rotation of the pulsator, and impact action of the pulsator on laundry. Appearing automatic washing machine automatically performs a series of processes leading to washing, rinsing and dehydration without user intervention in the middle.

Meanwhile, an example of a conventional washing machine and a foreign material filtering device applied thereto are described in detail in Korean Patent Application No. 97 -39040, which will be described below.

1 shows a configuration of a conventional fully automatic washing machine, which is mounted on the bottom surface of the outer tub 12 and the outer tub 12 for storing the washing water installed inside the main body 10 forming the exterior of the washing machine and storing the washing water. The power transmission device 18 receives the driving force of the motor 14 via the belt 16.

On the other hand, the outer tub 12 is provided with a washing tank 20 for dewatering the laundry by centrifugal force due to the rotation of the power transmission device 18, the upper portion of the washing tank 20 to maintain the horizontal when dewatering the laundry Balancer 22 is installed, the pulsator (26) coupled to the power transmission device (18) in order to make a special water flow of the wash water introduced through the water inlet 24 on the bottom surface of the washing tank (20) ) Is rotatably imparted.

In addition, the lower side of the outer tank 12 is provided with a drain 28 for discharging the contaminated washing water during the washing and rinsing process, the inner wall of the washing tank 20 by the rising water flow due to the rotation of the pulsator 26 The filter shown in FIGS. 2 and 3 is installed to filter out foreign matters in the flow of laundry.

On the other hand, Figure 3 is a view showing a foreign material filtering device according to the prior art, the washing machine by making a special water flow while rotating by receiving the driving force of the drive motor 14 to the bottom surface of the outer tank 12 including the washing tank 20 The pulsator 26 is installed so as to be carried out, and a foreign material filtering device for filtering foreign substances generated in the laundry during the washing operation is installed on the inner wall of the washing tank 20.

At this time, the foreign material filtering device is composed of a filter-shaped filter (60) formed with a rectangular rectangular hole (60a) and a pocket-shaped filter (62) for collecting the foreign matter is detachably mounted forward to the square hole (60a). The inflow hole 60b is formed on the bottom surface of the square hole 60a of the filter case 60 so that the water flow generated by the pulsator 26 passes.

In addition, an insertion hole 60c communicating with the square hole 60a is formed in the upper portion of the front surface of the filter case 60 to easily separate the filter 62.

At this time, the filter 62 discharges the wash water introduced through the inlet hole (60b) into the washing tank (20) and at the same time to filter the foreign substances generated in the laundry sieve (64, 66) Each of the front cover 68 and the rear cover 70 hinged thereto are attached, and the upper portion of the front cover 68, the locking portion to lock and release the filter 62 in the filter case 60 The 72 is integrally molded, and the lower portion of the locking portion 72 is provided with a discharge hole 68a for discharging the water flow up along the flow path formed when the filter case 60 is installed to the waterfall.

An accommodating groove 70a is formed in the inner lower portion of the rear cover 70, and an escape preventing protrusion 74 is integrally formed on the bottom and the wall of the accommodating groove 70a, and a drainage stroke or power is formed in the accommodating groove 70. When the rotation of the delivery device 18 is stopped, a check valve 80 made of a rubber material having a flexibility to block the foreign matter collected in the filter 62 and the remaining wash water from being discharged into the washing tank 20 is provided. It is detachably fixed.

The check valve 80 is formed integrally with the fixing portion 82 fitted into the receiving groove 70a, and the reverse flow blocking portion 84 having one end intermittently contacting the inner surfaces of the front and rear covers 68 and 70. It is provided with, and the stepped portion 86 is processed to a predetermined depth for a flexible intermittent flow at the boundary between the fixing portion 82 and the backflow blocking portion 84.

The operation of the foreign material filtering device according to the prior art configured as described above will be described.

When the driving motor 14 is operated, the driving force thereof is transmitted to the power transmission device 18, thereby rotating the pulsator 26 in the bottom surface of the washing tank 20 to start the washing operation while making water flow.

That is, the water flow generated by the centrifugal force due to the rotation of the pulsator 26 is raised along the inlet hole 60b of the filter case 60 while being pushed to the inner wall of the washing tank 20 so that the front and rear covers 68 and 70 are 70. Is discharged to the washing tank 20 side through the sieve (64) (66) attached to the), and at the same time ascending along the flow path (P) formed between the washing tank 20 and the filter case 60 to the front cover (68) Washing water converted into a waterfall flow into the discharge hole 68a is provided to increase the washing efficiency.

At this time, the reverse flow blocking portion 84 of the check valve 80 fitted in the receiving groove 70a of the rear cover 70 is in contact with the inner surface of the rear cover 70 while intermittently flowing by the rising water pressure. Maintaining a state in communication with the inlet (60b) of 60), the foreign substances generated in the wash water and the laundry is introduced into the filter 62 to collect the foreign substances.

Then, when the washing stroke is completed and the washing water is drained, the reverse flow blocking part 84 of the check valve 80 in contact with the inner surface of the rear cover 70 by the jet pressure of the washing water flowing back through the inlet of the filter 62. Is back to the initial state, that is, to contact the inner surface of the front cover 68 is to block the foreign matter and the remaining wash water is discharged into the washing tank (20).

However, such a conventional foreign matter trapping device structurally has the following problems.

First, when the pulsator 26 rotates left and right, the washing water rises through the flow path, but the direction of the rising water flows through the force to push in the washing tank wall direction, the force to rotate in the circumferential direction of the washing tank, and the washing tank wall surface. Three ascending forces are combined and determined.

By the way, the conventional foreign matter trapping device has a problem in collecting the wash water smoothly because the inlet of the wash water is formed in the plane of the lower filter 62.

That is, since only the water flow rising on the wall of the washing tank introduces the washing water into the filter of the foreign material filtering device, the inflow of the washing water is small and the efficiency of the filter is lowered.

In addition, when the filter 62 is immersed in water, when the pulsator 26 rotates, the washing water is pushed toward the wall surface of the washing tank, at which time the lint is attached to the strainer 66 attached to the rear cover 70. There was a problem that the cleaning is difficult to be sandwiched between the mesh 66 and the filter case 60 through the mesh formed.

In addition, the conventional foreign matter trapping device has a problem that the filter has a rectangular structure and has a flat structure, so that the laundry is prevented from rotating in the washing tank and may cause cloth damage.

The present invention has been made to solve the above problems, by improving the structure of the foreign matter filtering device for filtering foreign matters such as lint during washing to increase the foreign matter collection efficiency by introducing a larger amount of washing water into the foreign material filtering device and In addition, its purpose is to facilitate the cleaning of the filter case.

1 is a perspective view showing a cross-sectional appearance of a washing machine according to the prior art

2 is an enlarged view of a portion “A” of FIG. 1;

3 is an exploded perspective view showing the foreign material filtering device of FIG.

Figure 4 is a perspective view showing a state in which the foreign matter trapping apparatus of the present invention mounted inside the washing tank

5 is a perspective view showing a closed state of the filter of FIG.

6 is a perspective view showing an open state of the filter of FIG.

Explanation of symbols on the main parts of the drawings

100: filter 100a: front body

100b: rear body 101: washing water inlet

102: handle groove 103: interval maintenance projection

104: mesh 105: check valve

106: handle projection 107: snap detachable device

200: filter case 201: filter fastening

In order to achieve the above object, the present invention is installed on the side of the washing tank to guide the rise of the wash water and the filter case is provided with an elliptical filter fastening hole on the surface, the elliptical front body and the elliptical rear coupled thereto It is made of a body, a mesh provided on the grid of the front body and the rear body, a filter having a washing water inlet is provided on the front body and the rear body side, and provided to prevent the reverse flow of water flow rising inside the filter There is provided a foreign material filtering device of a washing machine comprising a check valve that is configured.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6.

Figure 4 is a perspective view showing a state in which the foreign matter trapping apparatus of the present invention is mounted in the washing tank, Figure 5 is a perspective view showing a closed state of the filter of Figure 4, Figure 6 is a perspective view showing the open state of the filter of Figure 4 , The foreign material filtering device of the present invention is installed on the side of the washing tank 20 to guide the rise of the washing water and the filter case 200 is provided with an elliptical filter fastening hole 201 on the surface, and the elliptical front body ( 100a) and an elliptical rear body 100b coupled thereto, and a mesh 104 provided on the lattice of the front body 100a and the rear body 100b, and the front body 100a and the rear body. It comprises a filter 100 having a washing water inlet 101 on the side (100b), and a check valve 105 provided to prevent the reverse flow of the water flow rising inside the filter (100).

At this time, the oval front body 100a and the oval rear body 100b are hinged.

In addition, a projection 103 for maintaining a distance from the rear body 100b is formed at the center of the grid of the front body 100a, and a handle groove 102 is provided at the side of the front body 100a, and the rear body. The handle protrusion 106 is provided on the side of the (100b).

In addition, the mesh 104 is a wire mesh, and the filter 100 is molded by insert-injecting a resin into a mesh made of a wire mesh.

In addition, the mesh structure of the mesh 104 of the rear body 100b is more dense than the mesh 104 of the front body 100a so that foreign matter does not escape through the mesh 104 of the rear body 100b. Have it.

On the other hand, the upper end of the front body (100a) is provided with a snap-type detachable device 17 for detachment to the filter case 200.

The operation of the present invention configured as described above is as follows.

In the present invention, in the lint collecting device, since the washing water inlet 101 is inclined, a large amount of washing water can be introduced, thereby maximizing foreign matter collecting ability and the filter 100 ring efficiency.

That is, the present invention is formed on the side of the front body (100a) and the rear body (100b) as the washing water inlet 101 is inclined form, when the pulsator 26 performs the left and right reverse, Since both the water flow and the water flow along the circumferential direction are introduced, the flow rate of the incoming washing water is significantly increased.

In addition, the present invention is formed on the side of the front body (100a) and the rear body (100b) check to prevent the backflow inside the filter 100 corresponding to the highest top position of the washing water inlet 101 having an inclined shape The valve 105 is mounted to prevent the collected foreign substances from leaving the filter 100.

At this time, the installation direction of the check valve for preventing the check flow 105 is installed inclined toward the front body (100a) starting from the wall of the rear body (100b) in consideration of the fact that the lint is collected toward the rear body (100b) as a result of the experiment. .

In addition, the filter 100 of the present invention has an elliptical structure that does not protrude from the filter case 200, so that the filter 100 does not collide with the clothes, thereby preventing damage to the cloth, and the flow of water flowing into the filter 100 is increased by the filter ( 100) As the vortex is generated inside, the filter 100 may not escape, thus preventing the foreign substance from being introduced into the washing tank 20 again.

In addition, when the filter 100 is immersed in the wash water, when the pulsator 26 rotates, water flow toward the wall of the washing tub 20 occurs, and at this time, the rear body 100b is more than the mesh 104 of the front body 100a. ) Mesh 104 has a more dense mesh so that it cannot escape through mesh 104 of rear body 100b.

Accordingly, the phenomenon in which foreign matters accumulate between the rear body 100b and the filter case 200 and the phenomenon in which foreign matters accumulate around the hook for coupling the filter case 200 to the washing tub 20 are prevented. 200) is easy to clean.

Meanwhile, in the present invention, a semicircular handle groove 102 is formed in the front body 100a, and a handle protrusion 106 is formed in the rear body 100b, thereby forming the front body 100a and the rear body 100b. It can be easily separated.

While the present invention has been described with reference to the preferred embodiments, one of ordinary skill in the art to which the present invention pertains can be embodied in a modified embodiment within the essential technical scope of the present invention. Here, the essential technical scope of the present invention is shown in the claims, and the modified forms within the equivalent range will be construed as being included in the present invention.

As described above, the present invention improves the structure of the foreign matter filtering device for filtering foreign matters such as lint during washing to increase the foreign matter collecting efficiency by introducing a larger amount of washing water into the foreign material filtering device and to clean the filter case. This makes it possible to improve product reliability.

Claims (7)

A filter case installed at the side of the washing tank to guide the rise of the washing water and having an oval filter fastening hole on the surface; A filter having an oval front body and an oval rear body coupled thereto, a mesh provided on the lattice of the front body and the rear body, and a washing water inlet provided at the front body and the rear body side; The foreign material filtering device of the washing machine, characterized in that it comprises a check valve provided to prevent the reverse flow of the water flow rising inside the filter. The method of claim 1, The oval front body and the oval rear body is a foreign body filtering device of the washing machine, characterized in that the hinge is coupled. The method of claim 1, Foreign body filtering device of the washing machine, characterized in that the front body is formed with a projection for maintaining a distance from the rear body. The method of claim 1, The side of the front body is provided with a handle groove, the foreign body filtering device of the washing machine, characterized in that the handle is provided on the side of the rear body. The method of claim 1, The check valve is installed at the top of the inclined washing water inlet formed on the side of the front body and the rear body, foreign body filtering device of the washing machine, characterized in that installed inclined toward the front body from the rear body. The method of claim 1, The foreign material filtering device of the washing machine, characterized in that the mesh is a wire mesh. The method according to claim 1 or 6, The foreign body filtering device of the washing machine, characterized in that the mesh of the rear body has a denser mesh than the mesh of the front body.