KR20050003491A - A drain constitution of the pulsator in the washing machines - Google Patents

Abstract

PURPOSE: A drain structure of a double-pulsator for a washing machine is provided to reduce assembling processes of the washing machine by preventing the flow reduction of the water even if an assembly error is generated in combining upper and lower pulsators and to shorten the drainage time. CONSTITUTION: A drain structure of a double-pulsator(20) composed of upper and lower pulsators(20a,20b) has a drain hole formed to pump out the water. Upper drain holes(22) are aligned on the upper pulsator. Lower drain holes(24) are arranged on the lower pulsator to communicate with at least one upper drain hole. The area of the lower drain hole is larger than that of the upper drain hole. The distance between insides of the upper drain holes is much shorter than the distance between insides of the lower drain holes. Accordingly, the water is smoothly discharged through the lower drain holes even if the upper and lower drain holes are not aligned for each other.

Description

Drainage structure of washing machine double pulsator {A DRAIN CONSTITUTION OF THE PULSATOR IN THE WASHING MACHINES}

The present invention relates to a drainage structure formed in the double pulsator in the washing machine, and more particularly, to improve the processing of the drain hole formed in the double pulsator of the washing machine to facilitate the manufacture and assembly of the double pulsator It relates to a drainage structure.

In a typical washing machine, a washing tank is installed inside a washing machine to receive water while receiving laundry in the washing tank, and to perform washing by friction of water flow or by chemical action of detergent.

Since the size of the washing tub, that is, the capacity of the washing machine, determines a single throughput of the laundry, a relatively large amount of washing water is supplied and drained in a large capacity washing machine. The water supply and drainage of the wash water is repeated at least once or more times according to the setting of the washing and dehydration process, and the washing time, which is a repetition time of the washing and dehydration process, is determined by the water supply time, the washing setting time, the draining time, and the like. Typically, such a shortening of the washing time can be an advantage of the washing machine.

A general pulsator type washing machine is shown in FIG. 1.

In FIG. 1, the washing tub 110 is installed inside the washing machine body 100. A pulsator 120 that forms a stream of water is rotatably installed on the bottom of the washing tank 110. The washing machine of the pulsator type generally performs washing in the washing tank 110 because the washing tank 110 and the pulsator 120 respectively rotate to form water.

On the other hand, the valve 130 for supplying water to the washing tub 110 of the washing machine is installed. In addition, as a drainage structure for circulating and recirculating the washing water in the washing tank 110 and drainage, the through-hole 140 formed on the side wall of the washing tank 110 and the drainage gap formed between the washing tank 110 and the pulsator 120 ( It is common to have a drainage structure configured to include 145.

Such a drainage time of the washing machine is determined by the through-hole 140 of the side wall of the washing tank 110, and the basal drainage discharged through the drainage gap 145, a manufacturing parameter for determining the basal drainage as a through-hole 140 Is the diameter and size of the drainage gap 145.

In the pulsator type washing machine as described above, in recent years, a drainage hole is formed on the surface of the pulsator to shorten the washing time while forming a double pulsator for assembling the pulsator. In such a washing machine, the total drainage time is the result of the sum of the basal drainage and the pulsator drainage drained through the drain hole formed in the pulsator. In addition, although the total drainage time is largely determined as the basal drainage amount, the drainage amount due to the drain hole formed on the pulsator surface also affects the shortening of the washing time. In practice, the basic drainage is often difficult to change from the design conditions of the washing machine, and the largest factor that determines the total drainage time of the washing machine is often the drainage of the pulsator drain hole. Therefore, a problem arises in the design and processing of the pulsator drain hole for shortening the washing time.

On the other hand, the prior art in which the drain hole is formed on the surface of the pulsator is disclosed in Korean Patent Registration No. 373781 registered February 13, 2003.

In the above technique, a configuration for solving the problem of causing assembly deviations due to misalignment of the drainage holes formed in the upper pulsator and the lower pulsator, causing the laundry to be easily caught, and reducing the drainage flow.

To this end, in the present invention, a flange portion is formed to be integrally bent downward along the inner circumference of the drainage hole of the upper pulsator and inserted into the drainage hole of the lower pulsator, and the drainage hole of the upper pulsator is the drainage of the lower pulsator. It was formed with a smaller diameter than the hole.

However, in the above invention, since the drain hole of the upper pulsator must be inserted into the drain hole of the lower pulsator to a certain depth, it requires a processing precision that the center axis of each drain hole must coincide, in particular, the processing precision. In order to alleviate to some extent, assembly tolerances such as assembly deviations and assembly intervals are allowed, from which problems remain that foreign matters contained in the wash water fall into the assembly tolerances.

The present invention has been made to solve the above problems, an object of the present invention is to drain even if the central axis of the drain hole formed in the upper and lower pulsator, respectively, when a double pulsator having a drainage means for drainage is manufactured It would be desirable to provide a drainage structure for a washing machine double pulsator to prevent debris from remaining in the drain.

For the above purpose, the present invention in the drainage structure including a drain hole formed in the double pulsator composed of the upper pulsator and the lower pulsator to drain the wash water, the upper pulsator is formed in the upper drain aligning The lower pulsator provides a drainage structure of the washing machine double pulsator, characterized in that the lower drain hole is formed in communication with at least one upper drain hole.

1 is a partial cross-sectional view showing the interior of a typical pulsator washing machine.

2 is an exploded perspective view of a double pulsator in accordance with the present invention.

Figure 3 is a partial cross-sectional view showing the drain hole of the double pulsator in accordance with the present invention.

4 is an exploded perspective view of another embodiment of a dual pulsator in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

20: double pulsator 20a: upper pulsator

20b: lower pulsator 21: rotary vane

22: upper drain hole 24, 24a: lower drain hole

25: Rib

In the washing machine, the time required for the water supply and drainage of the washing water accounts for a large proportion of the total washing time. Since the normal washing time is set according to the washing amount, it is not changed by the design of the washing machine itself. However, since the drainage and water supply time can be changed by the design of the washing machine, the washing time can be shortened, which is a design requirement that can have the advantages of the washing machine.

In addition, foreign matters generated from laundry, fiber residues and detergents should be discharged quickly without remaining. If these foreign substances remain, the performance of the washing machine is degraded and may cause a failure.

Characteristic features of such a washing machine is made through a drainage structure and the conventional drainage structure is as described above. That is, drainage is performed through a drainage structure such as a through hole formed in the side wall of the washing tank, a drainage gap formed between the washing tank and the pulsator, and a drain hole formed in the pulsator. In addition, the drain hole formed in the pulsator due to the design characteristics of the washing machine is very important for shortening the washing time. However, the drain holes formed in the double pulsator composed of the upper pulsator and the lower pulsator should preferably coincide with each other and should not have any unnecessary shape or processing scratches between the drain holes. That is, in order to improve the performance of the washing machine as a whole, a scheme and an easy assembly ability to overcome the processing error of the drain hole formed in the double pulsator are raised.

To this end, in the present invention, in forming the drain holes formed in the double pulsator of the drainage structure of the washing machine, the upper pulsator is formed in a row aligned with the upper drain holes, the lower pulsator to communicate with at least one of the phase drain holes To form a drain hole. This will be described in detail with reference to the drawings.

Referring to Fig. 2, a dual pulsator in accordance with the present invention is shown.

The upper pulsator 20a is installed toward the upper part of the washing tank, and a plurality of rotary vanes 21 are formed to generate the water flow of the washing water. In addition, the upper pulsator 20a is formed by arranging the phase drain holes 22 for drainage. The illustrated upper phase drain hole 22 is only a part of the upper drain hole 20a and may be changed according to the shape of the upper pulsator 20a.

The lower pulsator 20b is coupled to the upper pulsator 20a and is installed on the bottom of the washing tank, and a plurality of ribs 25 are formed to prevent deformation of the torsion during rotation. In addition, the lower pulsator 20b is formed with a lower drain hole 24 for drainage, the size of the lower drain hole 24 is larger than the size of the upper drain hole 22 and in communication with one or more upper drain holes 22. . The lower drain hole 24 is illustrated, but is not limited to the lower drain hole 24 in the form of a long hole in communication with the two upper drain hole (22). In addition, although the position of the lower drain hole 24 may be arranged differently according to the position of the rib 25, the lower drain hole 24 is formed to communicate with at least one or more upper drain holes 22 according to the gist of the present invention.

3 is a partial cross-sectional view of the double pulsator having the upper and lower drain holes 24 configured as described above.

The mutual coupling of the upper pulsator 20a and the lower pulsator 20b is formed so that the surfaces which abut each other do not become spaced apart or open.

In the upper drain hole 22 formed in the upper pulsator 20a, two upper drain holes 22 communicate with the lower drain hole 24 of the lower pulsator 20b, and the one or more upper drain holes 22 as described above. It is possible to change so as to correspond to this one drain hole (24).

Among the upper drain holes 22 communicating with the lower drain holes 24, the diameter d between the innermost parts disposed at the longest distance from each other is preferably the same as the inner diameter D of the lower drain holes 24, so the upper drain holes 22 ) And the lower drain hole 24 are processed so that there is no gap or unnecessary scratches between the inner surface.

The assembly of the double pulsator 20 comprised as mentioned above is demonstrated.

In the fastening process of the upper pulsator 20a and the lower pulsator 20b, the double pulsator 20 is coupled by an arbitrary fastening method while matching the upper drain hole 22 and the lower drain hole 24. At this time, in the fastening of the upper drain hole 22 and the lower drain hole 24, since the mutual axis is different, even if not matched, the upper drain hole 22 and the lower drain hole 24 smoothly communicate after the fastening, which is the upper drain hole 22 Since the distance (d) between both inner sides of the lower drain hole 24 is relatively much smaller than the distance D between both inner sides of the lower drain hole 24, even if the upper drain hole 22 is not exactly aligned with the position of the lower drain hole 24, It is possible to smoothly discharge through the large diameter of the drain hole (24). Therefore, the precision at the time of assembly does not need to require much.

On the other hand, the washing operation of the double pulsator 20 of the present invention assembled as described above is as follows.

During washing of the washing machine, washing water is generated by the rotary vanes 21 while the double pulsator 20 in the washing tank rotates, and washing is performed while the laundry rotates by the generated washing water flow. When washing, foreign matters generated by laundry and detergent are generated, and these foreign matters should be drained from the washing tank as much as possible when washing, and this is done by circulation and recirculation of the washing water. At this time, the wash water passes through the upper drain hole 22 of the upper pulsator 20a, and immediately after the upper drain hole 22 passes through the lower drain hole 24 having a relatively large size, the upper drain hole 22. Once the wash water has passed through, it can flow without any obstacle. In particular, the foreign matter passing through the upper drain hole 22 has to pass through the small diameter upper drain hole 22 from the lower drain hole 24 having a large size during the backflow of the wash water, so that the flow becomes difficult and passes through the double pulsator 20. The phenomenon that foreign matters flow back or become caught is significantly reduced.

In addition, since the washing water passes through the upper drain hole 22 of the upper pulsator 20a while passing through the upper drain hole 24 of the large size, the washing water substantially passes through the double pulsator 20. It can be estimated that the time depends on the passage time of the phase drain hole 22.

Thus, the time required for drainage depends on the time passing through the upper drain hole 22, and the drainage time is significantly shortened.

In addition, the foreign matter contained in the wash water is passed through the upper pulsator (20a), the flow of the wash water is free, so the phenomenon that is caught during the backflow or drainage is reduced.

Another embodiment of the present invention as described above is illustrated in FIG. 4.

In the present embodiment, the upper drain hole 22 of the upper pulsator 20a is the same, and the lower drain hole 24a of the lower pulsator 20b is formed in the circumferential direction about the axis of the double pulsator 20. do. However, in this embodiment, the lower drain hole 24a may be formed radially about the axis of the double pulsator 20, but is not limited thereto.

In the above embodiment, since the lower drain hole 24a is formed to be more expanded, it is possible to solve the processing difficulty of matching the upper drain hole 22 of the upper pulsator 20a when the double pulsator 20 is fastened. .

In addition, even when the wash water flows, the washing water passing through the upper pulsator 20a substantially passes through the double pulsator 20, so that the time required for drainage is further shortened, and foreign matters are upper and lower. It is a state difficult to accumulate in the drain hole (24).

As described above, the double pulsator of the present invention has a lower drain hole 24, 24a at least one or more phase drain holes so as to overcome the problems caused by the machining and assembly errors of the upper drain hole 22 and the lower drain hole 24, 24a. It is easy to assemble because it is fastened in correspondence with 22) and shorten the time for washing water to pass through the double pulsator.

In the dual pulsator of the present invention, even when an assembly error occurs when the upper pulsator and the lower pulsator are fastened, the flow of the wash water does not decrease, thus saving the labor of assembling the washing machine and reducing the drainage time of the wash water. Overall performance of the washing machine is improved, there is an effect that the fear of trouble due to foreign matter is significantly reduced.

Claims (4)

In the double pulsator composed of the upper pulsator and the lower pulsator in the drainage structure including a drain hole formed for the drainage of the wash water, The upper pulsator is formed to align the phase drain hole, The lower pulsator drainage structure of the washing machine double pulsator, characterized in that the lower drain hole is formed to communicate with at least one of the upper drain hole. The drainage structure of a washing machine double pulsator according to claim 1, wherein the lower drain hole has an area larger than that of the upper drain hole. The drainage structure of a washing machine double pulsator according to claim 1, wherein the lower drain hole is a long hole communicating in series with two or more of the upper drain holes. The drainage structure of a washing machine double pulsator according to claim 1, wherein the lower drain hole is a rectangular opening communicating with a plurality of the upper drain holes.