KR20000010506A - Pulsator of washing machine - Google Patents

Abstract

PURPOSE: The pulsator of a washing machine is provided to reduce the whirlpool, and to improve the washing force by changing the flow direction of the washing water and by increasing the intensity of the current by improving the form of a wing. CONSTITUTION: The washing machine has: a cylindrical water tank(11) opened the upper face to be able to fill the washing water inside a body case(10) formed an appearance; a rotating tub(12) stood to be able to rotate inside the water tank, and punched many dehydrating slots in the wall; a pulsator(20) to form the washing current by rotating and by reversely rotating in the lower part of the rotating tub(12); the pulsator(20) to agitate the washing water by installing inside the rotating tub(12), formed to bend the end of a wing toward the rotating direction to be able to prevent the twist of the washing by minimizing the whirlpool.

Description

Pulsator in washing machine

The present invention relates to a washing machine, and more particularly, to a pulsator installed inside the rotating tub to form a washing water flow.

In general, a washing machine performs washing strokes, rinsing strokes, and dehydrating strokes by rotating a rotating tub and a pulsator using a driving force of a motor. And an apparatus for washing using friction of the rotating tub.

The washing machine is provided with a water tank and a rotating tank inside the main body case, and a pulsator for stirring the washing water is provided inside the rotating tank. A driving motor for driving the rotary tub and the pulsator is installed at the bottom of the tank, and a clutch for controlling the power transmission to selectively drive the rotary tub and the pulsator by receiving the driving force of the driving motor in the center of the bottom of the tank. Is installed.

On the other hand, the pulsator is provided in a circular plate shape, as shown in Figure 1, a plurality of wings 3 are formed on the upper surface of the rotating plate 2 to stir the wash water. In addition, the pulsator 1 rotates forward and reverse by driving the drive motor. At this time, the washing water is agitated by the vanes 3 of the pulsator 1, and the laundry is pulsator 1. ) Will be rubbed and washed.

Here, the washing water is energized by the rotation of the pulsator 1 to cause a flow in the circumferential direction from the center of rotation of the pulsator. At this time, the flow of the fluid as shown in Figure 2, the tangential velocity component in the tangential direction in accordance with the rotation of the tangential velocity component (w) and the pulsator (1), which is the tangential velocity component with respect to the blade (3) curve ( u) flows in the synthesized direction (v).

However, the pulsator 1 of the conventional washing machine configured as described above has a relative speed component w acting in the outward direction as the shape of the blade 3 forming the washing water flow is composed of a straight line from the center of rotation to the outer periphery. Under the influence, the washing water flows toward the outer circumference of the pulsator 1 and hits the wall surface of the rotating tub to form an upward flow. And this rising water caused a large vortex, causing the laundry to be twisted or entangled, causing damage to the laundry.

The present invention is to solve such a problem, an object of the present invention is to improve the shape of the pulsator wings to change the flow direction of the wash water and to increase the intensity of the water flow, vortex is reduced and washing power is improved pulsator washing machine To provide.

1 is a perspective view showing a pulsator structure of a conventional washing machine.

2 is a view showing the flow of the fluid in the plan view of FIG.

3 is a cross-sectional view showing the overall configuration of a washing machine to which the pulsator according to the present invention is applied.

4 is a perspective view showing the structure of a pulsator according to the present invention.

5 is a view showing the flow of the fluid in the plan view of FIG.

6A and 6B illustrate structures of inclined surfaces formed on both sides of the curved wing according to another embodiment of FIG. 4.

Figure 7a, b shows another embodiment of the present invention, showing the structure of the blower cap and the discharge guide duct installed in the center and the straight wing formed between the curved wing.

Explanation of symbols on the main parts of the drawings

10: main body case, 11: tank,

12: rotary tub, 13: drive motor,

14: clutch, 15: belt,

20: pulsator, 21: rotating plate,

22: curved wing, 22a, 22b: inner surface,

22c, 22d: slope, 23: straight wing,

30: blowout duct, 31: inlet,

32: ejection cap, 33: ejection opening.

The present invention for achieving the above object, the water tank containing the wash water, a rotating tank rotatably installed in the inner side of the water tank, a plurality of wings are installed on the inner side of the rotating tank to agitate the wash water In the washing machine provided with the formed pulsator,

When the pulsator is rotated to include a plurality of curved wings having an inner surface curved in the direction of rotation toward the outer side of the pulsator so as to wind the wash water toward the center of rotation of the pulsator It is a characteristic structure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 3 is a side cross-sectional view showing the overall configuration of a washing machine applied pulsator according to the present invention, Figure 4 is a perspective view showing the structure of the pulsator according to the present invention, Figure 5 is a plan view of Figure 4 to drive the pulsator The figure shows the flow of the fluid. 6a, b and 7a, b illustrate another embodiment of the present invention.

In the washing machine according to the present invention, as shown therein, a cylindrical water tank 11 having an upper side opening is installed in the body case 10 to form an exterior so that washing water can be filled. The inside of the water tank 11 is rotatably set up, and the rotating tank 12 is provided with a plurality of dehydration holes perforated on the wall surface. At the bottom of the rotating tub 12, a pulsator 20 is formed which rotates forward and backward to form a washing stream.

In addition, a driving unit for driving the rotating tank 12 and the pulsator 20 is provided below the water tank 11. The drive unit includes a drive motor 13 for generating power and a clutch 14 for simultaneously or selectively rotating the pulsator 20 and the rotating tub 12 by the rotational force of the drive motor 13. Here, between the drive motor 13 and the clutch 14, a belt 15 for transmitting power is installed.

In addition, a drain valve 16 for discharging the wash water in the tank to the outside is installed at the lower portion of the water tank 11.

On the other hand, the pulsator 20 is installed inside the rotating tub 12 to stir the wash water is a characteristic element of the present invention is rotated the end of the wing to minimize the generation of vortex to prevent the twist of the laundry It is designed to bend in the direction.

4 and 5, the pulsator 20 according to the present invention is provided in a circular plate shape, the rotating plate 21 is formed with a plurality of irregularities on the upper surface, and the rotating plate to stir wash water to form a washing water flow It consists of a plurality of curved blades 22 formed radially on the upper surface of 21. Therefore, when the pulsator 20 is rotated forward and reverse, the washing water hits both sides of the pulsator curved wing 22 to generate water flow. That is, the wash water is energized by the rotation of the pulsator 20 to cause flow in the circumferential direction from the center of rotation of the pulsator 20.

At this time, the curved wing 22 of the pulsator according to the present invention is configured to be bent toward the outer direction toward both sides so that the washing water flowing in the circumferential direction flows in the rotation direction of the pulsator 20 to minimize the vortex. That is, both side surfaces of each of the outer ends of the curved wing 22 are composed of inner curved surfaces 22a and 22b that are bent in the rotational direction. Here, the inner curved surfaces 22a and 22b are formed on both sides of the wing end, and the movement of the pulsator 20 for forward rotation and reverse rotation is considered.

In more detail, when the pulsator 20 is rotated, the wash water is tangential to the blade tangential velocity component w that is to flow in a tangential direction with respect to the curved blade 22 curve, and the tangential direction according to the rotation of the pulsator 20. The circumferential velocity component (u) of is flowed in the synthesized direction (v). Here, the curved wing 22 according to the present invention is configured so that the ends of both sides are bent in the rotational direction, the blade tangential velocity component (w) is biased toward the rotational direction so that the flow direction of the fluid (v) is a pulsator 20 ) Is guided in the direction of rotation. That is, the inner curved surfaces 22a and 22b which are formed to be curved are wound around the fluid flowing outward to guide the inside, thereby lowering the outer head of the wash water and reducing the outer vortex.

6A and 6B illustrate another embodiment of FIG. 4, in which a lower side of a curved blade having both surfaces is formed of inclined surfaces 22c and 22d spreading on an upper surface of the rotating plate, thereby increasing upflow. That is, the cross-sectional structure of the curved wing 22 is to be larger from the top to the bottom.

7A and 7B illustrate still another embodiment of the present invention, wherein a straight wing 23 is formed between the curved wing 22 and the curved wing 22 in a linear shape. This is made by combining the characteristics of the curved blade 22 to lower the outer head of the wash water and reduce the outer vortex to prevent twisting, and the characteristics of the straight blade 23 to increase the washing effect due to the large stirring force, The purpose of the present invention is to improve the washing power of laundry while minimizing the vortex of the washing water generated at the outside.

In addition, the pulsator 20 shown in Figures 7a and 7b guides the flow of the fluid so that the washing water under the pulsator is jetted to the upper portion of the center of the pulsator by the rotational force of the pulsator, at least one of the jet pressure generated The jet guide duct 30 is installed at the bottom of the pulsator 20. And, the central upper portion of the pulsator 20 is provided with a jet cap 32 is formed with a jet port 33 so that the washing water guided through the duct 30 can rise vertically.

This configuration increases the washing effect of the laundry by causing the washing water introduced into the inlet portion 31 of the jetting guide trough 30 toward the jetting cap 32 at the center when the pulsator is rotated to generate a rising water flow. This is to prevent the laundry from twisting.

Next will be described the operation of the washing machine according to the present invention configured as described above.

When the user starts the washing machine, the washing machine performs a washing stroke, a rinsing stroke, and a dehydrating stroke. This series of strokes is programmed and automatically controlled by a controller (not shown).

In the washing stroke, the washing water is filled in the water tank 11 and the rotating tank 12 while the laundry is put into the rotating tank 12, and the pulsator 20 repeats the forward rotation and the reverse rotation by receiving power from the driving unit. . At this time, the washing water in which the detergent is added is filled to the water level line of a predetermined height so that all the laundry can be locked, and the laundry is bent together with the laundry by the forward and reverse rotational movement of the pulsator 20 to proceed with the washing.

The rinsing stroke is performed in the same operation as the washing stroke except for the addition of detergent, and the dehydrating stroke is washed by centrifugal force by rotating the rotary tub 12 at a high speed while the water in the tank 11 is drained through the drain pipe. It will dehydrate the remaining water.

Here, the pulsator 20 is rotated during the washing stroke and the rinsing stroke, the pulsator 20 according to the present invention is the end of the curved wing 22 is bent in the rotational direction of the pulsator 20 Consists of inner curved surfaces (22a, 22b) to wrap the fluid around the pulsator rotation to send the inside, it is possible to minimize the vortex of the wash water generated from the outside to minimize the twisting and tangling of the laundry.

That is, in the related art, washing water flowing outwardly is raised along the inner wall of the rotating tub 12 to generate a large vortex. However, since the inner curved surfaces 22a and 22b change the washing direction of the washing water in the rotational direction, the vortex Instead of being reduced, large wash streams are formed, which can increase the washing effect.

In addition, when the pulsator 20 is rotated, an upward stream of water is ejected from the central portion of the pulsator to increase the washing effect, and to prevent twisting of the laundry.

As described in detail above, the pulsator of the washing machine according to the present invention was composed of curved wings bent in the rotational direction of the pulsator both sides of the blade formed radially on the upper surface of the rotating plate. Therefore, when the pulsator is rotated, the washing water flowing to the outside is enclosed and sent to the inside, thereby minimizing the vortex of the washing water to prevent twisting and tangling of the laundry, and forming a strong washing water, thereby improving the washing power of the laundry. .

Claims (4)

A washing machine including a water tank containing washing water, a rotating tank rotatably installed inside the water tank, and a pulsator having a plurality of wings formed on an upper surface of the rotating water tank to stir the washing water. When the pulsator 20 is rotated, the inner side surfaces 22a and 22b of which the side surfaces of the wings are bent toward the outer side of the pulsator so as to wind the wash water toward the center of rotation of the pulsator are provided. Pulsator of the washing machine comprising a plurality of curved wings (22). The method of claim 1, The inner curved surface (22a, 22b) is a pulsator of the washing machine, characterized in that formed on both sides of the blade so as to have the same effect during the forward and reverse rotation of the pulsator (20). The method of claim 1, The pulsator of the washing machine, characterized in that between the curved wing 22 and the curved wing is provided with a straight wing 23 formed in a straight line in the circumferential direction from the center of rotation of the pulsator 20. The method of claim 3, A jet cap 32 having a jet port 33 is installed at a central portion of the pulsator so that upward flow is generated in the central portion of the pulsator 20, and when the pulsator is rotated, the wash water at the bottom of the pulsator 20 The pulsator of the washing machine, characterized in that the jet guide duct 30 is installed at the bottom of the pulsator to guide to the jet port.