KR100213624B1 - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine, comprising: a pulsator rotatably installed at the bottom of a washing tank and having a central outlet opening upwardly opening; A sorting fan rotatably installed in the pulsator to jet washing water through the central spout to form a central upward flow; A washing machine having a dividing fan driving means for rotating the dividing fan, comprising: a thrust support member fixed to the pulsator to support an axial load of a rotating shaft of the dividing fan. As a result, a washing machine having a structure of improving the washing efficiency by preventing the tangling and twisting of the laundry by forming the central rising water stream, and supporting the sorting fan for forming the central rising water stream is simple.

Description

washer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing machine that simplifies the support structure of a split fan rotating shaft for generating a central upward flow.

The conventional dehydrating combined-use washing machine rotates in the outer casing 102 provided in the out casing 101, the outer tub 102 provided in the out casing 101, and the outer tub 102 as shown in the cross-sectional view of FIG. 6. It has the washing tank 103 installed as possible. At the bottom of the washing tub 103, a pulsator 110 for generating washing water flow is provided so as to be capable of independent rotation with respect to the washing tub 103. The lower portion of the outer tub 102 is provided with a drive motor 105 and a shaft assembly 107 for rotating the washing tank 103 and the pulsator 110. The rotational driving force of the drive motor 105 is transmitted to the shaft assembly 107 through the electric belt 106, the shaft assembly 107 is to drive the washing tank 103 and the pulsator 110 together or separately. have. In the laundry administration, the washing tank 103 is fixed and only the pulsator 110 is rotated to form the washing water to wash the laundry contained in the washing tank 103, and during the dehydration administration, the washing tank 103 and the pulsator 110 are Rotate together.

The pulsator 110 of the conventional washing machine is formed in a substantially disk and the plurality of washing blades 121 for forming water flow on the upper surface thereof are radially raised. Thus, when power is applied, the pulsator 110 is rotated forward and backward by the driving motor 105, and the washing blade 121 flows the washing water to form a rotational flow.

By the way, when the rotating water flow is formed by the rotation of the pulsator 110 in the conventional washing machine, as shown in the drawing, the washing water radially spreads from the bottom of the washing tank 103 by the rotational centrifugal force, and then the washing tank Circulating water flow that rises along the inner wall surface of 103 and descends toward the pulsator 110 at the center is generated. Accordingly, the laundry is twisted along the circulating water and moved up and down to twist each other, which is washed in a twisted state, thereby lowering washing efficiency and damaging the laundry. In addition, since laundry is entangled even after dehydration, cleaning of laundry is inconvenient. In addition, since the circulating water circulating up and down has a certain direction, it does not contribute much to improve the washing power of the laundry.

Accordingly, an object of the present invention is to improve the washing efficiency by generating the central upward flow and to suppress the circulation flow in the vertical direction, to prevent tangling or twisting of the laundry, and to easily support the classification fan for forming the central upward flow. It is to provide a washing machine to be made in a structure.

1 is a schematic cross-sectional view of a washing machine according to the present invention,

2 is a perspective view of a pulsator in a washing machine according to the present invention;

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

4 is a partial cross-sectional view taken along the line B-B of FIG.

5 is a plan view of the drust support member in the washing machine according to the present invention;

6 is a schematic cross-sectional view of a washing machine according to the prior art.

Explanation of symbols for main parts of the drawings

3: washing tank 10: pulsator

20: pulsator body 25: drust support member

26: bearing groove 30: cover member

31: central ejection outlet 35: upper support protrusion

41: radial support member 52: split fan rotation shaft

55: pivot end 56: projection receiving groove

The object is, according to the present invention, a pulsator rotatably installed at the bottom of the washing tank and having a plurality of central outlet openings, and rotatably installed in the pulsator to flush the wash water through the central jet port. A washing machine having a dividing fan for forming a central upward flow and a dividing fan driving means for rotating and driving the dividing fan, comprising: a thrust support member fixed to the pulsator to support an axial load of a rotating shaft of the dividing fan; It is achieved by a washing machine having a.

Here, the axis of rotation of the sorting fan is parallel to the axis of rotation of the pulsator, it can be configured to support the lower end of the axis of rotation of the sorting fan with the drust support member, wherein the drust support member of the sorting fan It is desirable to have a pivot support groove for receiving and supporting the lower end of the rotating shaft.

In addition, the pulsator has an upper support portion that is engaged with the upper end of the split fan rotary shaft to support the rotation, the upper support is protruding, and the upper end of the rotary shaft of the split fan has a receiving groove for receiving the upper support The upper end of the rotating shaft can be supported by a simple structure. At this time, the upper end support portion has a partial spherical shape, the upper end portion of the rotary shaft of the sorting fan is preferably formed so as to fit the upper support portion in shape.

Hereinafter, an embodiment of a washing machine according to the present invention will be described in detail with reference to the drawings.

1 is a schematic cross-sectional view of a washing machine according to the present invention. As shown in this figure, the washing machine according to the present invention has an out casing 1 for forming the washing machine exterior, an outer tub 2 for holding wash water, and a washing tank 3 for holding laundry. . The outer tub 2 is installed in the outcasing 1, the lower part of which is supported by the suspension 4 which is connected to the upper part of the outcasing 3, and on the bottom thereof is a rotary drive of the washing tub 3 and the pulsator 10. The drive motor 5 and the shaft assembly 7 for the installation are provided. In addition, the washing tank 3 is installed in the outer tank 2 and is also called a dehydration tank. A pulsator 10 for generating washing water flow is installed on the bottom of the washing tank 3 so as to be able to rotate independently of the washing tank 3.

The rotational driving force of the drive motor 5 is transmitted to the shaft assembly 7 through the electric belt 6, and the shaft assembly 7 rotates the washing tub 3 and the pulsator 10 together or separately. have. In the laundry administration, the washing tank 3 is fixed and only the pulsator 10 is rotated to form the washing water, washing the laundry contained in the washing tank 3, and during the dehydration administration, the washing tank 3 and the pulsator 10 Rotate together.

2 is a perspective view of a pulsator in a washing machine according to the present invention, Figure 3 is a cross-sectional view taken along the line A-A of FIG. As shown in these figures, the pulsator 10 is composed of a pulsator body 20 formed almost as a disk and a cover member 30 coupled to a central portion of the pulsator body 20. In the pulsator main body 20, several washing blades 21 are raised on the upper surface along the radial direction. The washing blade 21 extends from the edge of the cover member 30 to the edge of the pulsator body 20 in the radial direction, and rotates the wash water and the laundry in the washing tank 3 when the pulsator 10 rotates. It serves to generate the washing water flow to flow.

In addition, the cover member 30 has a central ejection opening 31 upwardly opened in the axial direction in the central region, and accommodates a pair of sorting fans 50 for generating a central upward flow through the central ejection opening 31. It is formed in a cylindrical shape so that the pair of fan chambers 45 and the flow of water from each fan chamber 45 are guided to the central jet port 31 against each other with respect to the line of rotation axis 8 of the pulsator 10. The duct member 49 is provided. The duct member 49 is installed in the center of the cover member 30 in the form of a bent flat plate, and guides the flow of water formed by the dividing fan 50 from one side of the fan chamber 45 to the central spout 31. A flow path duct 48 that is a water flow path is formed.

Inlet 40 is formed in the lower portion of the fan chamber 45 for the inflow of the washing water, and a plurality of scattering water holes 32 communicating with the fan chamber 45 are formed at the upper edge of the cover member 30. have. In addition, the central ejection port 31 ejects upwardly the jet stream provided through the flow path duct 48 from the two split fans 50 at the center of the pulsator 10 to form a rising column, and the splash stream 32 ) Discharges the washing water flow applied in the radial direction by the dividing fan 30 in the radial direction upward to form the scattering water flow.

As shown in FIG. 3, the split fan 50 rotatably housed in the fan chamber 45 of the cover member 30 has a rotating shaft 51 parallel to the line of the rotating shaft 8 of the pulsator 10. And a plurality of fan blades 51 fixed radially along the rotational axis 52 in the axial direction. The pinion 62 is mounted to the lower end region of the rotary shaft 52 so as to be integrally rotated with the rotary shaft 52. Corresponding to the pinion 62, the drive gear 61 is fixedly installed on the bottom of the washing tub so that the pinion 62 is toothed. As a result, the fractionation fan 50 rotates with the rotation of the pulsator 10, and the driving gear 61 which is relatively stopped with respect to the pulsator 10 is engaged with the pinion 62 of the fractionation fan 10. The sorting fan 50 is rotated by this.

4 is a partial cross-sectional view taken along line B-B of FIG. 2 for explaining the support structure of the rotating shaft of the splitter fan, and FIG. 5 is a plan view of the drust support member. As can be seen in these figures, the axis of rotation 52 of the splitter fan 50 has a pivot end portion 55 protruding hemispherically at the lower end portion, which pivot end portion 55 is fixed to the pulsator body 20. It is accommodated in the shaft support groove 26 of the thrust support member 25. The rotary shaft 52 has a projection receiving groove 56 recessed in a partial spherical shape along the axial direction at the upper end, and the projection receiving groove 56 accommodates the upper support projection 35 protruding from the cover member 30. do. In this way, the rotation shaft 52 is pivotally supported at the upper and lower ends to rotate.

The drust support member 25 is formed as a long film object, and the bearing groove 26 is formed at the center thereof. Screw holes 28 for screwing into the pulsator body 20 by screws are formed at both ends of the thrust support member 25, and are fitted to fit around the lower edge of the pulsator body 20. The outer edge rib 27 is formed to protrude upward. The outer edge rib 27 plays a secondary role of increasing the rigidity of the thrust member 25. In addition, the thrust support member 25 is formed to be wider in a radially outer direction from the center where the bearing groove 26 is located, and has sufficient rigidity to support the fractionation fan 50 while reducing material. Are considered.

On the other hand, as can be seen in FIG. 4, a radial support member 41 is provided between the fan blade 51 and the pinion 62 to support the rotation shaft 52 of the split fan 50 in the radial direction. The radial support member 41 is formed on the pulsator 10 so as to be fixed to the pulsator 10 in the region of the inlet opening 46 of the fan chamber 45 so as to surround the journal portion of the rotary shaft 52. By sliding the journal portion of), the splitter fan 50 can be stably rotated without shaking in the axial direction.

With this configuration, when power is applied in the washing mode to operate the driving motor 5, the pulsator 10 is rotated through the shaft assembly 7. The pulsator 10 rotates, and the sorting fan 50 installed in the pulsator 10 revolves about the rotation axis 8 line of the pulsator 10, wherein the pinion 62 of the splitting fan 50 is rotated. The sorting fan 50 rotates by the interaction of the drive gear 61 fixed to the washing tank 3. When the fan blade 51 is rotated by the rotation of the split fan 50, the washing water flows in the centrifugal direction in the fan chamber 45 of the cover member 30, and the flow of water formed in this way is the cover member 30. Is led to the central jet port 31 along the flow path duct 48 of the pump, and is upwardly jetted as a central upward flow in the central jet port 31. A portion of the flow stream is discharged through the fly flow hole 32 directly from the fan chamber 45 to form the fly flow that is scattered upward in the radial direction.

The central upward flow formed in the central jet port 31 suppresses the flow downward from the center of the longitudinal circulating streams formed in the washing tank 3 by the rotation of the pulsator 10, and in the scattering flow hole 32 The formed splash flow stimulates the laundry locally and at the same time forms turbulence in the washing tank 3, thereby making the overall pressure distribution of the washing tank 3 uniform, preventing twisting or tangling of the laundry and improving washing power.

Here, the axial load and the rotational movement are pivotally supported at the upper and lower ends of the split fan 50 accommodated in the fan chamber 45 of the pulsator 10, and in particular, at the lower end, by the simply formed thrust support member 25. It is supported. The upper and lower pivot support portions 35, 53, 55, and 26 of the rotating shaft 52 adopt simple concave-convex and bite structures, and thus can be manufactured with excellent assembly workability and low cost. In addition, the radial support member 41 is provided for radial support so that the split fan 50 can be stably supported.

As described above, according to the present invention, by providing a central rising water flow to improve the washing efficiency, to prevent tangling or twisting of the laundry, and to provide a washing machine having a simple structure for supporting the sorting fan for forming the central rising water flow. do.

Claims (6)

A pulsator rotatably installed at the bottom of the washing tank and having a central spout which is upwardly opened, a sorting fan rotatably installed in the pulsator to spout the wash water through the central spout to form a central upward flow; A washing machine having a dividing fan driving means for rotating and driving a dividing fan, And a drust support member fixed to the pulsator to support the axial load of the rotational shaft of the splitter fan. The method of claim 1, The rotary shaft of the splitter fan is parallel to the rotary axis of the pulsator, and the thrust support member supports the lower end of the splitter fan rotary shaft. The method of claim 2, The drum support member is characterized in that it has a shaft support groove for receiving the lower end of the sorting fan rotation shaft. The method of claim 3, wherein The pulsator is a washing machine, characterized in that it has an upper support projection for rotating and engaged with the upper end of the split fan rotation shaft. The method of claim 4, wherein The upper support protrusion is formed projecting, the upper end of the sorting fan rotary shaft characterized in that it has a projection receiving groove for receiving the upper support projection. The method of claim 5, The upper support protrusion has a partial spherical shape, the upper end portion of the split fan rotating shaft is formed to accommodate the upper support protrusion in a shape is formed.

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