KR20070107215A - Drum-type washing machine - Google Patents

Abstract

A drum type washing machine is provided to reduce a fabrication cost by integrally forming a filter unit case with a tub and to reduce noise by eliminating foreign material from water. A drum type washing machine comprises a tub(20), a filter unit case(510), a filter unit, and a guide(506). The tub stores water, wherein a first drain port(502) is formed at its lower part. The filter unit case is communicated with the first drain port. The filter unit case is integrally formed at a lower part of the tub. The filter unit is installed in the filter unit case and filtering foreign material from water. The guide is formed at an internal surface of the tub and guiding foreign material to the first drain port.

Description

Drum washing machine

1 is an internal configuration of a drum washing machine according to the prior art

Figure 2 is a perspective view of the incision showing the drum washing machine according to the present invention

3 is a perspective view illustrating a state in which the filter unit case and the filter unit are separated;

** Description of symbols for the main parts of the drawing **

10: K 20: Tub

30: drum 40: motor

52: drain hose 54: filter housing

56: drain pump 502: first drain

504: second drain 506: guide

510: filter case 520: connector

530: filter unit 532: filter body

534: first filter

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine that effectively filters foreign substances or impurities that may be present in a tub when washing or dehydrating, and facilitates separation or coupling of a filter.

In general, the drum washing machine puts laundry into a cylindrical drum, and performs washing by using friction with laundry caused by rotation of the drum while washing water and detergent are supplied. At this time, the wash water is accommodated in the tub, and the water supply and drainage are repeated while washing and rinsing and dehydration.

Looking at the structure of the drum washing machine according to the prior art with reference to Figure 1 as follows.

The conventional drum washing machine has a case 10 forming an appearance, a tub 20 installed in the case 10 and receiving wash water, and a cylindrical drum 30 rotatably installed in the tub 20. And, installed on the rear side of the tub 20 is made of a large motor 40 for generating a rotational force by receiving power.

The control panel 12 for controlling the operation of the drum washing machine is installed on the front of the case 10 so that the user can designate and select the overall operation of the drum washing machine. The door 14 is installed at the front center of the case 10 so that laundry can be put into the drum 30 and taken out. The door 14 is hinged to the case 10 to open and close.

A hanging spring 22 through which the tub 20 is suspended is installed between an upper side of the outer peripheral surface of the tub 20 and an inner side of the upper surface of the case 10, and a lower side of the outer peripheral surface of the tub 20 and the case 10. The damper 24 is provided between the lower surfaces to damp the vibration of the tub 20 generated during dehydration. On the other hand, in recent years, the tub 20 has been adopted in a number of structures that are integrally formed and fixed to the case 10.

A gasket 26 is provided between the door 14 and the tub 20 to prevent the leakage of the wash water, thereby maintaining airtightness.

In addition, the motor 40 is composed of a stator (not shown) fixed to the rear of the tub 20 and a rotor (not shown) installed outside the stator (not shown), the drum shaft 42 is the rotor (Not shown) connects the drum 30 directly to transfer the rotational force to the drum 30.

On the other hand, the tub 20 is formed with a drain outlet 50 through which the washing water is discharged, and a drain hose 52 is installed to communicate with the drain hole 50 to guide the washing water discharged to the filter housing 54. . The filter housing 54 is coupled to the drain pump 56, and the washing water is discharged to the outside of the drum washing machine through the drain pipe 58 by pumping the drain pump 56.

A cover cap 16 is provided on the front surface of the case 10 adjacent to the filter housing 54 to remove the filters installed in the filter housing 54 to remove the filtered foreign substances.

Looking at the operation of the drum washing machine configured as described above is as follows.

First, after the laundry is put into the drum 30, when the user drives the drum washing machine washing water and detergent are supplied to the tub 20, the washing administration starts.

During the washing process, some washing water is discharged through the drain 50 and the drain hose 52. Then, the discharged wash water is supplied to the tub 20 through a circulation passage (not shown) provided to connect one side of the drain pump 56 and the upper side of the tub 20. That is, some washing water is circulated in the washing administration, thereby improving washing performance.

At this time, after the foreign matter is filtered by the filter installed inside the filter housing 54, the filtered wash water is supplied again.

On the other hand, the washing water discharged at the completion of the washing or rinsing stroke or in the dehydration stroke is similarly guided to the filter housing 54 through the drain port 50 and the drain hose 52, and installed inside the filter housing 54. After the foreign matter is filtered by the filter, the pump is discharged to the outside of the drum washing machine via the drain pipe 58 through the pumping of the drain pump 56.

By the way, according to the wash water filtration structure as described above, since the wash water is filtered using only the filter coupled to the drain pump 56, the removal efficiency of foreign matters is lowered, and smooth drainage is not performed by the foreign matter caught in the filter. .

In addition, the fine foreign matter passing through the filter is stacked and stacked in the drain pump 56 to interfere with the operation of the drain pump 56, the case may be damaged the impeller installed in the drain pump (56).

In addition, noise may be generated during washing and dehydration due to the foreign matter remaining in the tub 20 without being discharged, and vibration characteristics may deteriorate.

The present invention has been made to overcome the problems of the prior art, the object of the present invention is to discharge the foreign matter contained in the wash water so as not to remain in the tub, and effectively filter the foreign substances discharged from the tub to drain pump It is to provide a drum washing machine that can improve the performance and prevent damage to the parts.

Drum washing machine according to the present invention for achieving the above object and the tub is provided with a first drain port in the bottom receiving the wash water, the first drain and the filter unit is formed integrally with the tub at the bottom of the tub It is installed in the case and the filter unit case and comprises a filter unit for filtering the washing water to filter foreign matter.

A guide is formed on the inner surface of the tub to guide the foreign matter to the first drain.

On the other hand, the filter unit case is preferably formed in the lower front center of the tub.

Here, the filter unit comprises a first filter for filtering the washing water to filter foreign matter, and a filter body for accommodating the first filter, the filter unit is attached to the filter unit case detachably.

At this time, one end of the filter main body is formed with a stopper so that the filter main body is fitted into the filter unit case, the handle portion is formed on the stopper to easily rotate the stopper.

Meanwhile, the drum washing machine according to the present invention may further include a drain hose communicating with the filter part case, and a drain pump communicating with the drain hose and pumping to discharge the wash water.

Preferably, a filter housing having a second filter may be further included to filter the wash water discharged through the drain hose.

Here, the filter part case is in communication with the drain hose by a connecting pipe, the drain hose is in communication with the tub through a second drain hole provided in the lower portion of the tub.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

Figure 2 is a cutaway perspective view showing a drum washing machine according to the present invention, Figure 3 is a perspective view showing a state in which the filter unit case and the filter unit separated.

2 and 3, the drum washing machine according to the present invention includes a tub 20, a filter part case 510 integrally formed with the tub 20 under the tub 20, and the filter part case. It includes a filter unit 530 installed inside the 510.

As described above, the tub 20 is installed to be supported by a hanging spring (see FIGS. 1 and 22) and a damper (FIGS. 1 and 24) inside the case 10.

The tub 20 serves to receive the wash water during the washing and rinsing strokes, and a first drain 502 is provided under the tub 20 to discharge the washing water upon completion of each stroke. At this time, the first drain 502 is preferably provided at the bottom of the tub 20 to increase the drain efficiency.

On the other hand, a guide 506 is formed on the inner surface of the tub 20 to guide foreign matter to the first drain 502. In most cases, foreign matters are introduced from the front of the drum (see Fig. 1 and 30), that is, the doors (see Fig. 1 and 14), and foreign substances introduced from the front of the drum (see Fig. 1 and 30) are mainly tubs. 20) Guided to the inside of the guide 506 is guided to the first drain 502.

The lower portion of the tub 20 is provided with a filter unit case 510 to communicate with the first drain 502. The filter unit case 510 may be separately manufactured and attached to a tub 20 at a predetermined distance, but may be integrally provided to be adjacent to the tub 20.

As such, when the filter unit case 510 is integrally provided in the tub 20, the filter unit case 510 may be manufactured integrally in one mold to reduce manufacturing costs. In addition, since the wash water flows from the tub 20 to the filter unit case 510 without passing through a separate drain passage, foreign matters can be directly filtered out, thereby improving foreign matter removal efficiency and drainage efficiency.

The filter part case 510 may have a shape of a polygonal pillar such as a square pillar, and preferably, may have a cylindrical shape.

And, the filter unit case 510 is preferably formed in the lower front center of the tub 20 to facilitate the attachment and detachment of the filter unit 530 to be described later. In this case, the first drain 502 is also provided at the lower front center of the tub 20 so as to correspond thereto, and the guide 506 also has a tub 20 at both inner sides with respect to the lower front center of the tub 20. Is formed along the circumferential direction.

On the other hand, the filter unit case 510 is provided with a filter unit 530 that filters the foreign matter by filtering the wash water.

The filter unit 530 includes a first filter 534 for filtering laundry water to filter foreign matter, a filter main body 532 for accommodating the first filter 534, and one side of the filter main body 532. And a stopper portion 536 and a handle portion 538 formed on the stopper portion 536.

Here, the first filter 534 is attached to the middle of the filter body 532 in the horizontal direction, the washing water flowing down from the first drain 502 on the filter body 532, the first filter 534 Openings are formed to be guided to.

In addition, the filter unit 530 is detachable from the filter unit case 510, the outer peripheral portion of the plug portion 536 is fitted to the filter unit case 510 by the filter unit 530 filter unit case 510 Is attached to. In addition, the filter unit 530 is separated from the filter unit case 510 by rotating the stopper 536 in reverse. At this time, the user can easily rotate the stopper 536 through the handle 538 formed on the stopper 536.

In addition, another cover cap (not shown) may be separated from the case (see FIGS. 1 and 10) adjacent to the filter unit case 510 to separate the filter unit 530 outside the case (see FIGS. 1 and 10). ) May be provided.

On the other hand, one side of the filter unit case 510 is in communication with the drain hose 52 by the connecting pipe 520. One end of the drain hose 52 communicates with a second drain hole provided at the tub 20, and the other end thereof is connected to a drain pump (see FIG. 1, 56) for pumping to discharge the wash water.

At this time, the connection pipe 520 connecting the filter part case 510 and the drain hose 52 communicates with the drain hose 52 through a predetermined hole formed in the middle of the body of the drain hose 52. Therefore, the washing water discharged through the first drain port 502 and the second drain port 504 are both guided to the drain pump (see FIG. 1 and 56) by the drain hose 52.

Since the tub 20 vibrates during washing or dehydration, the drain hose 52 may be formed of an elastic member, in particular rubber, to prevent noise caused by vibration and to prevent vibration from being transmitted to the drain pump (see FIG. 1 and 56). Can be done.

On the other hand, in the case of the drain hose 52 made of rubber, there is a disadvantage that damage may occur such as crushing or tearing, as described above, the tub 20 is fixed to the case (see Fig. 1, 10) and the drum (Fig. 1, in the case of the drum washing machine adopting a structure in which the vibration of 30 is not transmitted to the tub 20, it can be prevented from being crushed or torn by using a metal tube such as a copper tube.

The drain pump (see Fig. 1, 56) is installed in combination with the existing filter housing (see Fig. 1, 54), the wash water is guided by the drain hose 52 immediately drain pump (see Fig. 1, 56) Rather than being connected to, it is once again filtered by a second filter (not shown) in the filter housing (see Figs. 1 and 54) and passes through the drain pump (see Fig. 1 and 56) and the drain pipe (see Fig. 1 and 58). It is discharged to the outside of the drum washing machine through.

The installation structure or function of the filter housing (see Fig. 1, 54) coupled with the drain pump (see Fig. 1, 56) is well known to those skilled in the art, and a detailed description thereof will be omitted.

Looking at the operation of the drum washing machine configured as described above are as follows.

First, power is supplied to the drum washing machine, and when the washing level and the detergent and the total washing time are set according to the amount of laundry put into the drum (see FIG. 1 and 30), the washing water is supplied into the tub 20 together with the detergent. . Then, the drum (see Fig. 1, 30) is rotated by a motor (see Fig. 1, 40) to perform the washing operation.

When the washing administration is completed, the turbid washing water is discharged in the tub 20, and new washing water is supplied to the tub 20 to perform a rinsing cycle of rinsing for a predetermined number of times, thereby discharging the washing water. . At this time, the wash water is discharged through the first drain 502 or the second drain 504.

In particular, the wash water discharged through the first drain 502 includes a large amount of foreign matter induced by the guide 506. Washing water flowing into the first drain 502 is guided to the filter main body 532 installed in the filter unit case 510, the seam from the wash water by the first filter 534 attached to the filter main body 532. And after the foreign matter such as lint is filtered, it flows into the drain hose 52 through the connecting pipe 520.

On the other hand, the wash water flowing through the second drain 504 flows straight into the drain hose (52).

Here, the wash water flowing into the drain hose 52 is filtered in the filter housing (see Fig. 1, 54) and then guided to the drain pump (see Fig. 1, 56).

Therefore, the washing water discharged through the first drain 502 is filtered twice in the filter unit case 510 and the filter housing (see FIG. 1, 54), and the washing water discharged through the second drain is also filter housing. At least once in (see FIG. 1, 54), the foreign matter contained in the wash water can be effectively removed.

In addition, since the washing water without foreign matter flows into the drain pump (see FIGS. 1 and 56), the efficiency of the drain pump (see FIGS. 1 and 56) is improved, and the possibility of breakage of components such as an impeller is also reduced.

In addition, a separate circulation pump (not shown) may be provided at one side of the drain pump (see FIG. 1 and 56). Specifically, a part of the wash water accommodated in the tub 20 during the laundry administration is discharged and supplied along the circulation passage (not shown) connected to the circulation pump (not shown) by the pump of the circulation pump (not shown), It is sprayed again from the tub 20.

The washing water recirculation structure can improve the washing efficiency with only a small amount of washing water. In this case, the washing water discharged in this case is both the filter unit case 510 and the filter housing (see FIG. 1 and 54). By filtering through only the filter housing (see FIG. 1, 54), clean laundry water free of foreign matter can be resupplied.

According to the drum washing machine according to the present invention described above, since another filter attached to the tub performs a filtration function redundantly, foreign substances are introduced into the drain pump rather than using a filter directly connected to the pump. The fall can be prevented more effectively.

In addition, by guiding the foreign matter contained in the wash water by the guide formed inside the tub to the first drain, it is possible to reduce the foreign matter remaining in the tub without being discharged, as a result, noise and vibration that may be caused by the remaining foreign matter Can be reduced.

On the other hand, since the filter unit case is provided integrally in the tub can be manufactured integrally in one mold to reduce the manufacturing cost. In addition, since the washing water flows from the tub without passing through a separate drain passage, the foreign matter can be immediately filtered, thereby improving foreign matter removal efficiency and drainage efficiency.

Claims (11)

A tub accommodating the wash water and having a first drain hole at a lower portion thereof; A filter unit case communicating with the first drain and integrally formed with the tub at the bottom of the tub; And The drum washing machine is installed inside the filter part case and comprises a filter part for filtering the washing water to filter foreign substances. The method of claim 1, Drum washing machine characterized in that the guide is formed on the inner surface of the tub to guide the foreign matter to the first drain hole The method according to claim 1 or 2, The filter unit case is a drum washing machine, characterized in that formed in the lower front center of the tub The method of claim 1, The filter unit comprises a drum washing machine comprising: a first filter for filtering foreign substances to filter the washing water; and a filter main body accommodating the first filter. The method of claim 4, wherein The filter unit drum washing machine, characterized in that attached to the filter unit case detachable The method of claim 5, One side of the filter main body is a drum washing machine, characterized in that the cap is formed so that the filter body is rotated to the filter unit case The method of claim 6, Drum washing machine, characterized in that the handle portion is formed on the stopper portion so as to easily rotate the stopper portion. The method of claim 1, A drum washing machine further comprising a drain hose communicating with the filter part case and a drain pump communicating with the drain hose and pumping to discharge the wash water. The method of claim 8, The filter unit case further comprises a connection pipe to communicate with the drain hose drum washing machine The method of claim 8, The drum washing machine further comprises a filter housing having a second filter to filter the washing water discharged through the drain hose. The method according to any one of claims 8 to 10, The drain hose is in communication with the tub through the second drain provided in the tub lower drum washing machine, characterized in that

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