KR20050045257A - Drum washing machine - Google Patents

Abstract

Disclosed is a drum washing machine that improves the washing performance by improving the structure of lifters disposed axially on an inner circumferential surface of a rotating tub installed to be inclined upward. The upper end of the lifters are made of a corrugated structure formed by arranging a plurality of mountains and valleys at a predetermined pitch, and each of the mountains and valleys is provided with a plurality of watering holes for sprinkling the washing water sprayed by each lifter downward. Watering holes are formed in a plurality of rows along the longitudinal direction at the upper end of each lifter, each row is arranged in a straight line. Each lifter has a structure protruding from the inner circumferential surface of the rotating tub in a state where the upper end of each lifter forms a horizontal line when located at the bottom of the rotary tub.

Description

Drum Washing Machine

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine, which improves washing performance by improving the structure of lifters disposed axially on an inner circumferential surface of a rotating tub installed by being inclined upwardly to facilitate loading and unloading of laundry. It is about.

In general, a drum washing machine includes a housing forming an exterior, a cylindrical water tank installed inside the housing, in which washing water is contained, a rotary water tank rotatably installed in the water tank, and washing laundry. It is provided with a drive motor which is disposed in the rear portion to rotate the rotating tub, and the door is installed in the front of the housing.

In the rotary tub, a plurality of lifters formed by protruding a predetermined length from the inner circumferential surface of the rotary tub are disposed in the axial direction, and when the rotary tub rotates, the laundry and the washing water are lifted upward by the lifters, and the laundry is washed downward. .

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.

As described above, the drum washing machine puts in or takes out the laundry through a door installed at the front of the housing. Typically, the height of the housing of the drum washing machine is very low compared to the height of the person, and the opening of the rotating tub is disposed forward. Opening the door and putting or removing the laundry through the opening of the rotating tub causes the inconvenience of lowering the posture by bending a lot.

In order to alleviate this inconvenience, a drum washing machine has been developed that allows the user to put in or take out the laundry even if the user does not bend or bends slightly by installing the rotating tub inclined upward so that the opening of the rotating tub can be disposed upward. .

When the rotating tub is installed at an inclined angle, a lot of laundry is concentrated at the rear end of the relatively low rotating tub, and only a small amount of laundry is placed at the tip of the relatively high rotating tub, but the lifter is located on the inner circumferential surface of the rotating tub. Since it is formed to protrude to a certain height from the front end to the rear end, laundry is accumulated on the lifter at the rear end of the rotary tub, while laundry is placed only under the lifter at the front end of the rotary tub.

Therefore, if the rotary tank is rotated while a large amount of laundry is concentrated at the rear end of the rotary tub, the laundry stacked on the lifter is not lifted by the lifter at the rear stage of the rotary tub, so that washing is not performed well. At the tip of the rotating tub, there is not much laundry to be lifted by the lifter, so that the lifter operates inefficiently.

In addition, laundry that is not lifted by the lifter at the rear end of the rotating tub is twisted and tangled as the lifter is rotated together with the rotating tub, resulting in damage of the laundry and inconvenience of having to unfold the laundry after the washing is completed. .

In addition, in the front end of the rotating tub relatively less laundry is distributed laundry can be lifted smoothly by the lifter so that the laundry is pushed to the rear end of the rotating tub to further increase the phenomenon that the laundry is concentrated at the rear end of the rotating tub.

In addition, if the laundry is concentrated only at the rear end of the rotary tub as described above, the load is greatly applied to the rear end of the lifter, while the load is applied to the front end of the lifter so that dynamic unbalance is applied to the rotary tub, thereby smoothly rotating the rotary tub. It will not be done.

In addition, since the rotating tub has a structure inclined upward toward the front, the washing water mixed with the detergent liquid introduced from the bottom of the rotating tub to the tip of the lifter is only partially vertical as the lifter is rotated upward. It is sprinkled downward, and most of it flows down to the rear end of the lifter so that the washing water mixed with the detergent liquid is concentrated at the rear end of the lifter. Accordingly, the laundry placed on the front end of the rotating tub is not sufficiently wetted with the washing water mixed with the detergent solution, so that washing is not performed well.

The present invention is to solve the problems of the conventional drum washing machine described above, an object of the present invention is to provide a drum washing machine to improve the washing performance by improving the structure of the lifters disposed in the axial direction on the inner peripheral surface of the rotary tub installed inclined upward It is.

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

A housing, a rotating tub installed inclined upwardly at a predetermined angle toward the front of the housing, and a plurality of lifters disposed in an axial direction on an inner circumferential surface of the rotating tub, wherein a plurality of uneven portions are formed at upper ends of the lifters. do.

Preferably, the upper end of the lifter is made of a waveform structure formed by arranging a plurality of hills and valleys in a predetermined pitch, a plurality of spray holes for spraying the washing water sprayed by the respective lifters downward on each hill and valley Is provided.

The watering holes are formed in a plurality of rows along the longitudinal direction at the upper end of each lifter, each row is arranged in a straight line.

Each lifter has a structure protruding from the inner circumferential surface of the rotating tub when the upper end of each lifter forms a horizontal line when located at the bottom of the rotary tub.

In addition, the lifters are formed with a length extending from the rear end to the tip of the rotary tub.

In addition, the height of the lifter is increased from the front end to the rear end of the lifter.

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 plurality of lifters according to the present invention having a structure in which the height is reduced toward the front and the upper end is formed in a waveform is disposed on the inner peripheral surface of the rotary tub It is a perspective view of the rotating tank which showed that.

As shown in the drawing, the drum washing machine according to the present invention has a substantially box-shaped housing (1) and the drum-shaped water tank (2) installed inside the housing (1) to contain wash water. And a drum-shaped rotary tub 3 in which a plurality of dehydration holes 4 are formed on the circumferential surface thereof and rotatably installed in the water tank 2, and the laundry is rotated by rotating the rotary tub 3. Is provided with a drive motor (5) to be washed and dehydrated.

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 hose 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 tank 3 to rotate the rotational force of the driving motor 5. It transfers to the tank 3, and the rotating tank 3 is rotated.

The rotating tank 3 is disposed in an inclined state upward upward at a predetermined angle toward the front of the housing 1 so that laundry can be put in or taken out without bending the body. Accordingly, the water tank 2 may also be rotated with the rotating tank 3. It is arranged in an inclined state upward at the same angle and is suspended in the housing 1. Of course, in some cases, the inclination angles of the rotating tank 3 and the water tank 2 may be arrange | positioned differently.

The rotating tank 3 is inclined upward by the angle of α toward the front of the housing 1 so that the horizontal center line C1 of the rotating tank 3 crosses the horizontal line H1 at an angle of α. . Therefore, a relatively large amount of laundry is placed at the rear end of the rotating tub 3 compared to the front end thereof.

The angle of inclination α of the rotating tub 3 is advantageously made as large as possible so that laundry can be easily put in and taken out from the front of the housing 1. However, if the angle of inclination of the rotating tub 3 is too large, only the rear end of the rotating tub 3 may be used. The laundry is so crowded that it will degrade the laundry performance. Therefore, it is preferable to set the inclination angle α of the rotary tub 3 within a range of 5 degrees to 15 degrees in consideration of the simple loading of laundry and washing performance.

A plurality of lifters 20 are disposed in the rotary tub 3 so as to rotate the rotary tub 3 together with the wash water to raise the laundry to the top, and then drop the laundry at a predetermined height.

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 entire laundry can be lifted upwards.

In addition, the lifters 20 have a rear side of the housing 1 rather than a front end of the rotating tub 3 adjacent to the door 6 because the rotary tub 3 is disposed to be inclined upward toward the front of the housing 1. It has a structure that the height is lowered toward the front end from the rear end of the rotating tub (3) so as to smoothly lift the laundry positioned to be biased to the rear end of the rotating tub (3) adjacent to.

That is, each lifter 20 has a constant inclination toward the tip from the rear end of the rotary bath 3 such that the upper end 21 and the lower end 22 of the lifter 20 intersect at an angle α similarly to the rotary bath 3. When the lifter 20 is positioned at the lowest point of the rotary tub 3, the upper end 21 of the lifter 20 is parallel to the horizontal line H1.

Here, the lower end portion 22 of the lifter 20 refers to a portion in contact with the inner circumferential surface of the rotary tub 3, and the upper end 21 of the lifter 20 protrudes from the rotary tub 3 to the maximum. It means one part.

This arrangement of the lifter 20 allows the lifter 20 to lift a relatively large amount of laundry at the rear end of the lifter 20 having a relatively high protruding height with the lifter 20 positioned at the lowest point of the rotary tub 3. It is possible to lift the relatively small amount of laundry at the tip of the lifter 20 having a relatively low protrusion height, and thus the rotating tub 3 rotates smoothly and dynamically washes the entire laundry evenly. You can do it.

In addition, since a small amount of laundry is distributed and washed at the front end of the lifter 20 having a relatively low protrusion height, the laundry located at the front end of the lifter 20 is pushed to the rear end of the rotary tub 3. It does not occur.

3 and 4 are a perspective view and a cross-sectional view of the lifter shown to show the structure of the lifter according to the present invention, respectively.

As shown in the drawing, the lifter 20 according to the present invention has a structure in which the height of the protrusion is constantly lowered from the rear end toward the tip so that the upper end portion 21 has the same inclination angle α as the rotating tub 3 (Fig. Inclined to 1).

The inclined upper end 21 of the lifter 20 has a smooth wavy structure to have a plurality of uneven parts so that the plurality of peaks 21a and the valleys 21b are arranged at a predetermined pitch. A watering hole 23 formed in a plurality of rows in the longitudinal direction is provided. These sprinkling holes 23 are formed so that each row is in a line at each peak 21a and valley 21b of the upper end portion 21 having a wave shape.

The lower end 22 of the lifter 20 is opened to allow washing water to flow into the lifter 20 through the lower end 22, and a pair of bosses 24 are integrated in the lifter 20. The bosses 24 are provided with threaded fastening holes 25. Therefore, the lifter 20 is fixed to the rotary tub 3 by fastening the screw 26 (see FIG. 2) to the fastening hole 25 outside the rotary tub 3.

A plurality of openings 27 are formed in a portion where the lifter 20 is coupled in the rotary tub 3, so that when the lifter 20 is placed at the lowest rotational position, the lifter 20 is lifted through the lower end 22 of the lifter 20. Washing water can flow into the interior of the 20).

Therefore, the washing water introduced into the lifter 20 through the lower end 22 of the lifter 20 at the bottom of the rotary tank 3 is connected to the sprinkling holes 23 at the top of the rotary tank 3. Since it is sprayed downward through the washing water mixed with detergent liquid soaks the laundry sufficiently, the washing is made quickly.

Of course, although not shown in the drawings, it is also possible to form a plurality of watering holes on both sides of the lifter so that water can also be sprayed in the lateral direction.

Referring to the process of washing the laundry by the drum washing machine according to the present invention configured as described above are as follows.

First, when the laundry is simply put in a state in which the posture is not lowered in the rotating tub 3 inclined upward by opening the door 6, a relatively large amount of laundry is positioned at the rear end of the rotating tub 3, A relatively small amount of laundry is placed at the tip of the rotating tub 3.

In this state, when the door 6 is closed and the washing machine is operated by operating a control panel (not shown), the washing water mixed with detergent is filled in the lower part of the water tank 2 through the water supply pipe 7 and the detergent container 8. . 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.

In the laundry administration, a relatively large amount of laundry is placed at the rear end of the inclined rotary tank 3, but the lifter 20 is formed because the protrusion height of the rear end is higher than the protrusion height of the front end. The laundry can be washed by lifting upwards without difficulty, while the rotating tub 3 is also dynamically rotated in a stable state.

When the lifter 20 is rotated to a position adjacent to the upper portion of the rotary tub 3 while lifting the laundry, the laundry falls downward while washing is performed, and at the bottom of the rotary tub 3, the lifter 20 is rotated. The washing water mixed with the detergent liquid introduced through the lower part 22 is soaked to the laundry while being sprayed downward through the plurality of spray holes 23 provided at the upper end of the lifter 20.

At this time, since the upper end portion 21 of the lifter 20 according to the present invention has a corrugated structure, the washing water does not flow directly from the leading end portion of the lifter 20 to the rear end portion of each of the mountains 21a of the upper end portion 21a. It is soaked in the sprayed through the sprinkling holes (23) to the lower portion of the rotating tank (3), thereby allowing a sufficient amount of washing water can also be sprayed from the tip of the lifter (20).

In addition, the watering hole 23 of the mountain 21a having a relatively high position by the structure of the lifter 20 in which the watering holes 23 are formed in the plurality of mountains 21a and the valleys 21b of the upper end 21. The wash water that could not escape through the water flows directly into the lower mountain 21a while being able to escape through the sprinkling holes 23 formed there. Therefore, the washing water does not flow immediately along the rear end portion of the lifter 20 so that the washing water is not scattered intensively only at the rear end portion of the lifter 20.

In addition, since the lifter 20 according to the present invention has a corrugated structure in which the upper end portion 21 has a plurality of peaks 21a and valleys 21b, the rotating tub 3 is clockwise and counterclockwise. By applying friction to the laundry during the rotation process alternately, the laundry can be washed more effectively.

When the laundry administration is completed, the washing of the laundry is completed by rinsing and dehydrating the laundry through a rinsing stroke and a dehydration stroke.

When the washing of the laundry is completed again to open the door (6) to take out the laundry from the rotating tub (3), at this time, the rotating tub (3) according to the present invention is arranged to be inclined upwards without washing the posture without significantly lowering the posture You can easily take out.

As described above in detail, the drum washing machine according to the present invention is disposed with the rotating tub tilted upward toward the front of the housing, and the inner peripheral surface of the rotating tub with the upper end of the lifter forming a horizontal line when each lifter is located at the bottom of the rotating tub. Since it has a structure protruding from, even if a relatively large amount of laundry is located at the rear end of the inclined rotary tub, there is an effect that the laundry can be made smoothly and quickly by lifting the laundry without any problem.

In addition, the drum washing machine according to the present invention has the effect that the rotating tub can be rotated in a dynamically stable state because the laundry located at the rear end of the rotating tub is lifted stably by the lifter due to the configuration features as described above. have.

In addition, the drum washing machine according to the present invention is not tangled or agglomerated laundry due to the configuration features as described above when the laundry is dehydrated laundry does not rotate unbalanced, the effect of eliminating the need to unfold the laundry is complete There is.

In addition, since the drum washing machine according to the present invention has a structure in which the upper end of the lifter is corrugated and has a structure in which a plurality of spray holes are arranged in rows with each acid and valley, washing water mixed with a detergent liquid is sufficient even at the tip of the lifter. It can be sprinkled, and thus the laundry located at the tip of the rotating tub having a relatively high height can be washed quickly and effectively.

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 a rotating tub showing that a plurality of lifters according to the present invention having a structure in which the protrusion height is reduced toward the front and the upper end is formed in a wave shape is disposed on the inner peripheral surface of the rotating tub.

3 is a perspective view of the lifter shown in FIG. 2.

4 is a cross-sectional view taken along the line IV-IV of FIG. 3.

* Description of symbols on the main parts of the drawings

1: housing 2: countertop

3: rotating tank 5: driving motor

6: door 20: lifter

21: upper part 21a: mountain

21b: Goal 22: lower part

23: Sprinkler Hall

Claims (6)

A drum having a housing, a rotating tub installed inclined upwardly at a predetermined angle toward the front of the housing, and at least one lifter disposed on an inner circumferential surface of the rotating tub, wherein the upper end of the lifter has a plurality of irregularities formed therein. washer. According to claim 1, wherein the upper end of the lifter is formed of a wave structure formed by arranging a plurality of hills and valleys in a predetermined pitch, each of the hills and valleys for spraying the washing water sprayed by the lifter downward Drum washing machine characterized in that the watering hole is provided. The drum washing machine according to claim 2, wherein the watering holes are formed in a plurality of rows along the longitudinal direction at the upper end of the lifter, and the rows are arranged in a straight line. The drum washing machine according to claim 1, wherein the lifter has a structure protruding from an inner circumferential surface of the rotating tub such that the upper end of the lifter is horizontal with respect to the housing when the lifter is positioned at the lowest end of the rotary tub. The drum washing machine according to claim 1, wherein the lifter has a length extending from the rear end to the front end of the rotary tub. The drum washing machine according to claim 1, wherein the height of the lifter increases from the front end to the rear end of the lifter.