KR101003357B1 - Drum Washing Machine - Google Patents

Abstract

The washing water contained in the lifter can be sprayed from the upper part of the rotating tank toward the center of the rotating tank to provide a drum washing machine which reduces washing time and improves washing performance. The lifter has a first surface and a second surface disposed to face each other, and a plurality of first and second injection holes are formed in the first and second surfaces, respectively. The check vane is freely disposed between the first and second surfaces. The check vane moves from the lower part of the rotating tank to the rear side of the rotating tank in the first and second surfaces due to the resistance of the washing water, so that the washing water does not exit through the spray holes located downward, and the upwardly sprayed It acts to be sprayed toward the center of the rotating tank through the holes.

Description

Drum Washing Machine

1 is a cross-sectional view showing a schematic structure of a drum washing machine according to the present invention.

FIG. 2 is a perspective view of the rotating tub shown in FIG. 1 and shows that check vanes are disposed inside each lifter installed at a predetermined interval on an inner circumferential surface of the rotating tub.

3 is a cross-sectional view taken along line III-III of FIG. 1 to show the action of the check vane when the tumbler rotates clockwise.

4 is an enlarged view of a portion A of FIG. 3.

5 is a cross-sectional view taken along the line III-III of FIG. 1 to show the action of the check vane when the rotating tub rotates counterclockwise as a view corresponding to FIG.

FIG. 6 is an enlarged view of a portion B of FIG. 5.

Description of the Related Art [0002]

2: water tank 3: rotating tank

20: lifter 21: first side

21a: first injection hole 22: second surface

22a: 2nd injection hole 30: check vane

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine which improves washing performance by arranging check vanes inside a lifter so that the washing water sprayed by the lifter is sprayed toward the center of the rotary tub at a predetermined height. will be.

In general, a drum washing machine includes a housing forming an exterior, a cylindrical tank installed inside the housing and containing wash water, a cylindrical rotating tank rotatably installed inside the tank to wash laundry, and the tank. It is disposed at the rear of the drive motor for rotating the rotating tub and a door installed in the front of the housing.

In the rotary tub, a plurality of lifters protruding from the inner circumferential surface of the rotary tub toward the center of the rotary tub are arranged in the axial direction, and when the rotary tub rotates, the laundry and the washing water are lifted to the top by each lifter, and the laundry is dropped to the bottom of the rotary tub. This will be washed.

In addition, the front of the water tank and the rotating tub is provided with an opening to open or remove the laundry into the rotating tank through the openings, and when the door is closed, the tank and the rotating tub are sealed from the outside to wash the laundry.

Therefore, when the laundry machine is put into the rotating tank and the drum washing machine is operated, the rotating tank rotates clockwise and counterclockwise while washing the laundry in a state in which a predetermined amount of washing water is supplied to the tank.

When the rotating tub is rotated, the lifters are also rotated together, so that the laundry and the washing water are pulled up from the lower part of the rotating tub, and then dropped to the lower part of the rotating tub, so that the washing water containing detergent evenly wets the laundry.

However, in the conventional drum washing machine, the lifter attached to the inner circumferential surface of the rotating tub has a structure in which a plurality of injection holes are formed on the upper surface and the lower surface with respect to the rotation direction of the rotating tub. Most of the water exits through a plurality of injection holes formed in the lower surface before being pulled to the upper portion of the rotating tub so that the washing water cannot effectively wet the laundry placed in the center of the rotating tub.

Therefore, the conventional drum washing machine has a disadvantage in that the washing water in which the detergent is mixed does not evenly wet the laundry, so that the washing performance is not only degraded, but also the washing time is lengthened to sufficiently wet the laundry.

In addition, the conventional drum washing machine does not lift the detergent mixed in the wash water to a high position by the lifter, so that the laundry mixed with the detergent is not evenly sprayed on the entire laundry, so that the laundry is not uniformly washed as a whole. In addition, the detergent is not dissolved or mixed quickly and effectively in the wash water, the detergent can not be fully utilized, and thus there is a disadvantage that the washing performance is further reduced.

The present invention is to solve the problems of the conventional drum washing machine described above, an object of the present invention is to reduce the washing time and improve the washing performance by allowing the wash water contained in the lifter to be sprayed toward the center of the rotating tub from the top of the rotating tub It is to provide a drum washing machine.

Drum washing machine according to the present invention for achieving this object,

A water tank containing wash water, a rotating tank rotatably installed in the water tank, a plurality of lifters installed on an inner circumferential surface of the rotating tank, and a plurality of lifters disposed inside the lifter and placed in the lifter at the bottom of the rotating tank. Losing wash water is characterized in that it comprises a check vane to fall toward the center of the rotating tub from the top of the rotating tub.

The lifter has a first surface and a second surface disposed to face each other, the first surface and the second surface is formed with a plurality of first injection holes and second injection holes, respectively, the check vane The movement is freely arranged between the first side and the second side.

Preferably, the check vane is formed to have a size capable of covering the plurality of first and second injection holes.

The check vane is moved toward the rear side of the first and second surfaces with respect to the rotation direction of the rotary tub by the resistance of the wash water in the lower portion of the rotary tub.

The first surface and the second surface are in contact with each other by extending a predetermined length toward the inner side of the rotating tank from the inner circumferential surface of the rotating tub so that the wash water is contained in the space between the first and second surfaces.                     

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a cross-sectional view showing a schematic structure of a drum washing machine according to the present invention, Figure 2 is a perspective view of the rotating tank shown in Figure 1 that the check vanes are arranged inside each lifter installed at regular intervals on the inner peripheral surface of the rotating tank It is seen.

As shown therein, the drum washing machine according to the present invention has a substantially box shape.

A housing (1) which is formed to form an exterior, a drum-shaped tank (2) installed inside the housing (1) to contain wash water, and rotatably installed in the tank (2). A drum-shaped rotary tank 3 having a plurality of dehydration holes 4 formed on a circumferential surface thereof, and a driving motor 5 for rotating the rotary tank 3 to wash and dehydrate laundry. .

Openings (2a) and (3a) are provided on the front of the water tank (2) and the rotating tank (3) so as to put laundry into the rotating tank (3) or to take out the laundry contained in the rotating tank (3). On the front surface of 1), the door 6 for opening and closing the water tank 2 and the openings 2a and 3a of the rotary tank 3 is hinged.

In addition, the upper end of the housing 1 is provided with a water supply pipe 7 for receiving the wash water from the outside, and a detergent container 8 for mixing the detergent in the wash water supplied through the water supply pipe 7. In the bottom of the housing 1, after the washing is completed, a drain pump 9 and a drain pipe 10 for discharging the washing water to the outside of the housing 1 are installed.

The driving motor 5 is fixedly installed at the rear of the water tank 2, and the rotating shaft 5a connected to the driving motor 5 is coupled to the rear of the rotating water tank 3 to provide the rotational force of the driving motor 5. It transfers to the rotating tank 3, and makes the rotating tank 3 rotate.

A plurality of lifters 20 are disposed in the rotary tub 3, and as the rotary tub 3 rotates, the laundry is pulled up to the top of the rotary tub 3 together with the wash water mixed with detergent, and then dropped at a predetermined height. Allow the laundry to be washed.

The lifters 20 are spaced apart from each other at regular intervals on the inner circumferential surface of the rotary tub 3 and are arranged in the axial direction, and are formed to have a length extending from the rear end to the front end of the rotary tub 3 and placed in the rotary tub 3. The laundry can be lifted upwards.

The lifter 20 lifts the laundry from the lower part of the rotary tub 3 to the upper part and falls back to the lower part of the rotary tub 3 so that the first side 21 and the second surface 22 functioning as the laundry transfer surface. It is provided.

The first surface 21 and the second surface 22 extend toward the inside of the rotating tank 3 in a state separated from each other on the inner circumferential surface of the rotating tank 3 and abut the ends of the rotating tank ( The front and rear ends of the first and second surfaces 21 and 22 corresponding to the front and rear ends of 3) have a closed structure.

That is, the lifter 20 has a substantially triangular cross-section and has a structure in which a lower end corresponding to the bottom is opened so that an inner space is formed between the first face 21 and the second face 22. When the 20 is positioned below the rotary tub 3, the interior is formed through communication holes 3c formed on the circumferential surface of the rotary tub 3 between the first and second surfaces 21 and 22. Washing water flows into the space so that it can be contained.                     

A plurality of first injection holes 21a and second injection holes 22a are formed in the first surface 21 and the second surface 22, respectively, to lift the lifter 20 according to the rotational direction of the rotary tub 3. Washing water contained in it to be sprayed from the top to the bottom of the rotating tub (3).

In addition, the inside of the lifter 20 moves to the first surface 21 or the second surface 22 in accordance with the rotation direction of the rotary tub 3 to the first injection hole 21a or the second injection hole 22a. Check vanes 30 are disposed to obscure them.

The check vane 30 is formed in a thin plate shape having a size capable of covering both the first injection holes 21a and the second injection holes 22a, so that the check vanes 30 are disposed between the first surface 21 and the second surface 22. At this point the movement is freely placed.

The check vane 30 receives the resistance of the wash water in a direction opposite to the rotation direction of the rotating tub 3 at the bottom of the rotating tub 3 when the rotating tub 3 rotates clockwise or counterclockwise. The first side 21 or the second side 22 is pushed toward the rear side with respect to the rotational direction of the rotating tub 3 to move out of the lifter 20 until the wash water contained in the lifter 20 reaches the upper portion. The operation of the check vanes 30 will be described below with reference to FIGS. 3 to 6.

FIG. 3 is a cross-sectional view taken along line III-III of FIG. 1 to show the action of the check vane when the rotating tub rotates clockwise, and FIG. 4 is an enlarged view of portion A of FIG. FIG. 5 is a view corresponding to FIG. 3, which is a short cut taken along the line III-III of FIG. 1 to show the action of the check vane when the rotating tub rotates counterclockwise, and FIG. 6 is B of FIG. The part is enlarged and shown.

Open the door (6), put the laundry in the rotating tank (3), close the door (6) again and operate the control panel (not shown) to operate the washing machine through the water pipe (7) and detergent container (8) The lower part of 2) is filled with the washing water mixed with detergent. When the washing water corresponding to the amount of laundry is supplied and the water supply stroke is completed, the driving motor 5 is operated so that the rotating tub 3 rotates clockwise and counterclockwise alternately with the rotating shaft 5a. Will be washed.

As shown in FIGS. 3 and 4, when the rotary tub 3 rotates in a clockwise direction, the lifter 20 passes through the lower portion of the tank 2 while the rotary tub 3 is moved by the first surface 21. The laundry placed in the lower part of the) is pushed upward, and at the same time, the washing water mixed with the detergent is filled in the lifter 20.

In addition, the check vane 30 in the lower portion of the water tank 2 is moved to the second surface 22 by receiving the resistance of the wash water in a direction opposite to the rotation direction of the rotating tank 3 to the second surface 22. A plurality of injection holes 22a formed in the cover are covered.

The lifter 20 passing through the lower part of the water tank 2 lifts the laundry caught on the first surface 21 to the upper side, and the washing water contained in the lifter 20 faces the second surface facing downward. The second injection holes 22a formed in the 22 are covered by the check vanes 30 so as not to escape from the lifter 20 until they reach a predetermined height.

When the rotary tub 3 further rotates clockwise to raise the lifter 20 to a certain height, the plurality of first injection holes 21a having the washing water contained in the lifter 20 formed on the first surface 21. When it is sprayed to the lower part of the rotating tub 3 through, the lifter 20 is raised slightly higher so that the laundry falls from the first surface 21 of the lifter 20 to the lower part of the rotating tub 3. do.

The height of the lifter 20 to which the washing water is sprayed is in the angular range of the lifter 20 is approximately 9 o'clock to 12 o'clock in FIG. 3, and the laundry is dropped at any angle of the angular range according to the amount thereof.

When the wash water mixed with the detergent is sprayed downward from the upper portion of the rotary tub 3 toward the center of the rotary tub 3, the laundry placed on the lower portion of the rotary tub 3 is uniformly soaked and the laundry is washed. It can be done effectively and quickly.

When the rotary tub 3 continues to rotate further clockwise to move the lifter 20 at an angle of approximately three o'clock, the check vane 30 is driven by the resistance of the wash water at the lower portion of the tank 2. It is moved to the first surface 21 by gravity until it is pushed to the surface 22.

As described above, as the rotating tub 3 rotates in the clockwise direction, the check vanes 30 are moved to the second surface 22 or the first surface 21 of the lifter 20 by the resistance and gravity of the wash water. As it moves, the wash water contained in the lifter 20 does not escape until it reaches a certain height.

On the other hand, when the rotating tub 3 rotates counterclockwise, the lifter 20 and the check vane 30 are operated in the opposite direction to the above operation while dropping the laundry and the washing water from the upper portion of the rotating tub 3 to the lower portion. Thrown away.                     

That is, as shown in Figures 5 and 6, when the rotary tub 3 is rotated in the counterclockwise direction, the lifter 20 passes through the lower portion of the tank 2, while washing water is contained therein. The check vane 30 moves to the first surface 21 of the lifter 20 by the resistance of the wash water, thereby blocking the first injection holes 21a formed in the first surface 21.

Even if the lifter 20 rises with the rotation of the rotary tub 3 by the action of the check vane 30, the washing water contained in the lifter 20 does not escape downward through the first injection holes 21a. When the lifter 20 rises to a certain height, the lifter 20 is sprayed toward the center of the rotating tank 3 through the second injection holes 22a formed in the second surface 22.

The spraying of the wash water is continued until the lifter 20 reaches the maximum height, and when the lifter 20 descends again toward the lower part of the water tank 2, the check vanes 30 are gravity-induced on the second surface. Go to (22).

Repeating the above operation for a certain time, when the washing stroke is completed, the washing is completed by rinsing and dehydrating the laundry through the rinsing stroke and the dehydrating stroke, and when the washing of the laundry is completed, open the door 6 again and open the rotating tank ( The laundry is taken out from 3) to be dried outside the washing machine, or automatically dried through a drying apparatus (not shown) installed inside the housing 1.

As described in detail above, the drum washing machine according to the present invention has a structure in which the washing water contained in the lifter is sprayed toward the center of the rotating tank at a predetermined height or more without exiting until the predetermined height of the rotating tank is reached by the check vane. Therefore, the laundry is quickly and sufficiently wetted by the washing water, which shortens the washing time and improves the washing performance.

In addition, the drum washing machine according to the present invention is that the detergent mixed in the wash water contained in the lower part of the tank is effectively lifted by the lifter to be sprayed on the laundry to further improve the washing performance.

Claims (9)

A water tank in which washing water is contained, a rotating tank rotatably installed in the water tank, a plurality of lifters installed on an inner circumferential surface of the rotating tank, and freely disposed in the lifter to move freely in the lower portion of the rotating tank. And a check vane to allow the wash water contained in the lifter to fall from the upper portion of the rotating tub toward the center of the rotating tub. The method of claim 1, wherein the lifter has a first surface and a second surface disposed to face each other, the first surface and the second surface is formed with a plurality of first injection holes and second injection holes, respectively, And said check vane is freely disposed between said first and second surfaces. The drum washing machine according to claim 2, wherein the check vane is formed to cover the plurality of first and second injection holes. The drum washing machine according to claim 3, wherein the check vane is moved toward the rear side of the first and second surfaces with respect to the rotation direction of the rotary tub by the resistance of the wash water at the bottom of the rotary tub. . According to claim 2, wherein the first surface and the second surface extends a predetermined length toward the inner side of the rotating tank from the inner circumferential surface of the rotating tub to contact each other so that the wash water is contained in the space between the first surface and the second surface Drum washing machine characterized in that the. A plurality of lifters having a water tank containing washing water mixed with detergent, a rotating water tank rotatably installed in the water tank to contain laundry, a plurality of laundry transport surfaces having a plurality of spray holes, and the inside of each lifter. And a check vane arranged to move freely in the lower portion of the water tank so that the washing water contained in the lifter is sprayed through the plurality of spray holes at a predetermined height or more. According to claim 6, The laundry conveying surface is composed of a pair of the inner circumferential surface of the rotating tub extending toward the center of the rotating tub to abut each other, the check vane is arranged to move freely between the pair of laundry conveying surface Drum washing machine characterized in that the. 8. The drum washing machine according to claim 7, wherein the check vanes are formed in a plate shape having a size capable of covering a plurality of injection holes formed in each of the laundry transfer surfaces. The method of claim 8, wherein the check vane is formed on a side located at a relatively low height of the pair of laundry transfer surface to move toward a relatively low height of the pair of laundry transfer surface according to the rotation direction of the rotating tub Drum washing machine characterized in that it covers the injection holes.

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