TW201738428A - Washing machine capable of alleviating the rigidity reduction of the stirring blade and increasing the amount of circulating water without excessively increasing the rotation speed - Google Patents

Abstract

Provided is a washing machine capable of alleviating the rigidity of the stirring blade and increasing the amount of circulating water without excessively increasing the rotation speed. The stirring blade (3) includes, on the inner side of the stirring blade (3), a plurality of inner blades (33) extending in the radial direction; and outer peripheral ribs (35) and inner peripheral ribs (36, 37) extending in the circumferential direction and spaced apart from each other in the radial direction. The front end (35a) of the outer peripheral rib (35) disposed on an outer peripheral side of the stirring blade (3) is located on a side closer to a bottom surface (22a1) than a height position (Hm) of an inlet of a circulating water passage (R). The front end (36a, 37a) of the inner peripheral rib (36, 37) disposed closer to the inner peripheral side than the outer peripheral rib (35) is located farther from the bottom surface (22a1) than the front end (35a) of the outer peripheral rib (35).

Description

washing machine

The invention relates to a washing machine provided with a circulating water path for circulating water in a washing tank.

In the past, in the washing machine, an inner blade extending in the radial direction is provided on the inner side of a pulsator provided at the bottom of the washing tank, and a circulation water path is provided on the side of the washing tank, and by rotating the stirring blade, The water at the bottom of the washing tank is extruded to a circulating water path, whereby the washing water is circulated.

In addition, it is desirable to increase the amount of circulating water and to improve the washing performance, and it has been proposed to increase the amount of water taken in between the inner blades by, for example, abolishing the circumferential ribs (see Patent Document 1).

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-230554

However, as described in Patent Document 1, when the circumferential rib is scrapped, the rigidity of the stirring blade is lowered, and the amount of deformation of the stirring blade is increased. Therefore, in consideration of the amount of deformation, it is necessary to increase the gap provided between the stirring blade and the washing tub. If the gap is increased, there is a problem that the bath ratio is reduced as long as the height dimension determining the volume in the washing tank is not increased.

Further, in order to increase the amount of circulating water, it has been proposed to increase the rotational speed of the agitating blade, and the amount of circulating water is increased by the mechanical force thereof. However, if the rotation speed of the stirring blade is increased, there is a problem that the cloth is rubbed and the cloth is easily damaged.

The present invention has been made in view of the above-mentioned problems, and it is an object of the invention to provide a washing machine capable of reducing the rigidity of a stirring blade and increasing the amount of circulating water without excessively increasing the rotational speed.

The present invention relates to a washing machine characterized by comprising: a washing tank; a stirring wing provided at a bottom of the washing tank; and guiding water in the washing tank which is extruded when the stirring blade is rotated to a circulation water passage for circulating the upper portion of the washing tank, wherein the agitating blade is provided on the inner side of the agitating blade with a plurality of radial direction fins extending in the radial direction; and extending in the circumferential direction and spaced apart in the radial direction The plurality of circumferential ribs disposed on the outer circumferential side of the agitating blade, that is, the front end of the outer peripheral rib is located closer to the bottom than the height of the inlet of the circulating water passage. The inner peripheral side of the outer peripheral side rib The front end rib, that is, the front end of the inner peripheral side rib is located farther from the front end than the front end side of the outer peripheral side rib.

According to the present invention, it is possible to provide a washing machine which can reduce the rigidity of the stirring blade and increase the amount of circulating water without excessively increasing the rotational speed.

1‧‧‧Washing machine

2‧‧‧ Laundry trough

3‧‧‧Agitating wing

3a‧‧‧ hole

3b‧‧‧Depression

3c‧‧‧Bulge

3d‧‧‧ sloped surface

3e‧‧‧下下

3f‧‧‧ bushing

5‧‧‧Outer frame (frame)

6‧‧‧ drive

6a‧‧‧Rotary axis

7‧‧‧ outer trough

7a‧‧‧Drainage

8‧‧‧Anti-vibration device

9‧‧‧Top cover

9a‧‧‧Wish input

9b‧‧‧ cover

10‧‧‧Base member

11‧‧‧Drain hose

12‧‧‧Washing

13‧‧‧Drain valve

14‧‧‧Installation base

15‧‧‧Water level sensor

16‧‧‧Electromagnetic water supply valve

17‧‧‧Water supply hose connection

18‧‧‧ slot cover

19‧‧‧Control unit

21‧‧‧ body board

21a‧‧‧ Dehydration hole

21b‧‧‧ inner wall

22‧‧‧floor

22a‧‧‧ bottom (bottom)

22a1‧‧‧ bottom

22b‧‧‧ side

22c‧‧‧through holes

22d‧‧‧top

23‧‧‧balance ring

23a‧‧‧Under the balance ring

24, 25‧‧‧Circuit flow path components

24a‧‧‧Upper

24a1‧‧‧Flange

24b‧‧‧Bottom

24b1‧‧‧Flange

24c‧‧‧Waterway

26‧‧‧Crushing head trapping member

26a‧‧‧ Opening

27‧‧‧ entrance (introduction)

28‧‧‧ entrance (introduction)

31‧‧‧Exporting

32‧‧‧ gap

33‧‧‧ inner blade (diameter rib)

33A, 33B‧‧‧ inner blade group

34‧‧‧ring ribs

35‧‧‧Outer peripheral ribs (circumferential ribs)

35a‧‧‧ front end of the peripheral rib

36, 37‧‧‧ inner peripheral side ribs (circumferential ribs)

36a, 37a‧‧‧ front end of the inner peripheral rib

100‧‧‧ stirring wings

101, 102‧‧‧ Weekly ribs

101a, 102a‧‧‧ front end

110‧‧‧Circular flow path components

110a‧‧‧Upper board

120‧‧‧ laundry trough

D‧‧‧Direction

H, H1, H2, H3‧‧‧ height dimensions

Hm‧‧‧ height position of the entrance

Hs‧‧ reference position

O‧‧‧Rotary axis center

P‧‧‧ pump room

Q1, Q2, Q3, Q10, Q11, Q12‧‧‧ space

R‧‧‧Circular waterway

S‧‧‧ gap

U1, U10‧‧‧ area

W‧‧‧ Week direction

Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y10, Y11, Y12, Y13, Y14‧‧‧ White Arrow

Fig. 1 is a schematic view showing the internal structure of a washing machine of the embodiment.

Fig. 2 is a longitudinal sectional view showing the internal structure of the washing tub of the embodiment.

Figure 3 is a cross-sectional view showing the inside of the washing tank in which the stirring wings are removed.

Figure 4 is a perspective view showing the inside of the stirring blade.

Fig. 5 is a cross-sectional view showing the positional relationship between the inlet of the circulating water passage and the radial rib.

Fig. 6 is a perspective view showing the inside of the stirring blade as a comparative example.

Fig. 7 shows the flow of water by the circumferential ribs, (a) is the embodiment, and (b) is a comparative example.

Fig. 8 is a view showing the image of spray diffusion, (a) is an embodiment, and (b) is a comparative example.

Hereinafter, the form for carrying out the invention (hereinafter referred to as "embodiment") will be described in detail with reference to the drawings. Among them, the following series of washing machines that can be washed, washed, and dehydrated (so-called fully automatic washing machines) are described as an example, but can also be applied to washing machines that can be washed, washed, dehydrated, and dried (so-called vertical laundry clothes) machine).

Fig. 1 is a schematic view showing the internal structure of a washing machine of the embodiment.

As shown in Fig. 1, the washing machine 1 is configured to include a washing tank 2 in a frame (frame) 5 made of a substantially box-shaped steel plate, a stirring blade 3 provided at the bottom of the washing tank 2, and a washing water A circulating water path R.

The washing tank 2 is configured to have a bottomed cylindrical shape, and includes a main body plate 21, a bottom plate 22 provided at the bottom of the main body plate 21, and a balance ring 23 provided on the upper portion of the main body plate 21.

The agitating blades 3 (also referred to as pulsating wings, pulsator) are formed in a substantially disk shape and are provided at the bottom of the washing tub 2. Furthermore, the agitating blades 3 can be rotatably supported by the drive unit 6. Thereby, the washing water can be stirred together with the entire laundry 12 by rotating the stirring blade 3 during washing or rinsing.

The circulating water passage R is configured to be disposed on the wall surface of the washing tank 2, and the washing water (water) is pushed from the bottom of the washing tank 2 to the upper portion of the washing tank 2 by the rotation of the stirring blade 3, and is returned to the washing tank 2 Internally for circulation. Further, the circulating water passage R is provided at a plurality of locations on the wall surface of the washing tub 2.

Further, the washing machine 1 is provided with an outer tub 7 including a washing tub 2 coaxially inside the casing of the outer frame 5. The outer tub 7 is made of a synthetic resin and has a bottomed cylindrical shape, and is supported by an anti-vibration device 8 such as a coil spring or an elastic rubber that is suspended from the upper end of the outer frame 5, and the like. Further, a drain valve 13 and a drain hose 11 are provided on the outer side of the bottom of the outer tub 7, and the drain port 7a provided at the bottom of the outer tub 7 passes through the drain valve 13 and is connected to the drain hose 11.

Further, the washing machine 1 is provided with a control unit 19 as a control means, an electromagnetic water supply valve 16 as a water supply means, and a pressure-sensing water level sensor 15 for detecting a water level. When the washing process or the like is performed, the electromagnetic water supply valve 16 is opened by the instruction of the control unit 19, and the washing water is supplied with water into the outer tub 7. When the water level sensor 15 is detected to have reached the predetermined water level, the electromagnetic water supply valve 16 is closed by the instruction of the control unit 19, and the water supply is stopped. Further, when the dehydration process or the like is performed, the drain valve 13 is opened by the instruction of the control unit 19, and the washing water in the outer tub 7 is discharged to the outside of the washing machine 1 by the other end of the drain hose 11.

A top cover 9 made of synthetic resin is provided on the upper portion of the outer frame 5, and a base member 10 made of synthetic resin is provided on the lower portion of the outer frame 5. In addition, the center of the upper cover 9 has a laundry inlet 9a for taking out the laundry 12 and the like, and a lid 9b for opening and closing the laundry inlet 9a is provided. Further, a water supply hose connection port 17 connected to the water faucet is provided at the rear of the upper cover 9. The water supply hose connection port 17 is connected to the electromagnetic water supply valve 16.

Further, in the inner circumference of the outer tank 7 and the outer circumference of the washing tank 2 There is a gap therebetween, and laundry or the like does not enter the gap, and in order to maintain the rigidity of the entire outer tub 7, the upper end of the outer tub 7 is provided with a groove cover 18 that covers the upper surface of the balance ring 23.

The drive unit 6 is attached to the outer side of the bottom of the outer tub 7 through the mounting base 14 made of steel. Further, the drive unit 6 is configured to drive the stirring blade 3 through the drive motor and the speed reduction mechanism. The driving device 6 is configured to be selectively driven in a stirring mode in which the stirring blade 3 is rotated in both forward and reverse directions while the washing tank 2 is stationary; and the washing tank 2 and the stirring blade 3 are integrally formed in the same direction Rotating dehydration mode.

Fig. 2 is a longitudinal sectional view showing the internal structure of the washing tub of the embodiment. In FIG. 2, the illustration of the dehydration hole 21a (refer FIG. 1) is abbreviate|omitted.

As shown in FIG. 2, the main body plate 21 is formed into a cylindrical shape, and a plurality of dewatering holes 21a for separating and discharging the washing water contained in the laundry 12 from the laundry 12 by centrifugal force are formed in the peripheral wall (refer to Figure 1, only a part of the illustration).

Further, a circulation flow path member 24 constituting the circulating water passage R is attached to the main body plate 21. The circulation flow path member 24 is formed of a substantially plate-shaped member such as synthetic resin, and is formed to extend in a predetermined width or more.

Further, the circulation plate member 25 constituting the circulating water passage R is attached to the main body plate 21 at another position different from the circulation flow path member 24. A detachable thread collecting head collecting member 26 is attached to the circulation flow path member 25. The broken head collecting member 26 is formed with a plurality of openings 26a, A wire filter (not shown) is provided in a region where the opening 26a is disposed.

The bottom plate 22 is made of synthetic resin, and the disk-shaped member that closes the lower portion of the main body plate 21 has a bottom portion 22a that constitutes the bottom surface of the washing tub 2, and a side portion 22b that extends upward from the outer peripheral edge of the bottom portion 22a to form a side surface. It is fixed to the lower end portion of the body plate 21. Further, a plurality of through holes 22c communicating with the bottom of the outer tub 7 are formed in the bottom portion 22a.

The balance ring 23 is a synthetic resin or the like, and is formed in an annular shape and fixed to an upper end portion (upper edge portion) of the main body plate 21. Further, the balance ring 23 is configured to protrude inward in the radial direction from the inner wall surface of the main body plate 21, and the inner diameter of the balance ring 23 is smaller than the inner diameter of the main body plate 21. Further, the balance ring 23 is configured by enclosing a fluid having a large specific gravity (salt water or the like) therein, and when the laundry tank 2 rotates, when the laundry is deflected or the like is eccentric, the eccentricity is offset by the movement of the fluid, and the balance of rotation is maintained. The function.

The agitating blade 3 is configured to cover a substantially disk shape of the inside of the bottom plate 22 (the inner bottom portion of the washing tub 2), and the central portion is convex upward in the direction of the rotation axis and undulates up and down in the circumferential direction. Further, the agitation blade 3 is formed to be curved so that a part of the peripheral portion is pushed upward. Further, the agitation blade 3 is formed with a hole 3a penetrating the front side and the back side at a plurality of points, and a circular recessed portion 3b or a rib portion 3c extending in the radial direction is formed at a plurality of points.

Figure 3 is a cross-sectional view showing the inside of the washing tank in which the stirring wings are removed. 3 is a cross-sectional view of the broken-head collecting member 26 viewed from the front.

As shown in FIG. 3, the circulation flow path member 24 extends from the upper end 24a to the proximal side of the balance ring 23, and the lower end 24b extends to a position into the recess of the bottom plate 22. Further, a flange portion 24a1 formed by integrally bending a resin is formed on the inner side in the radial direction of the upper end 24a of the circulation flow path member 24. The front end of the flange portion 24a1 is set at a position that does not protrude inward in the radial direction from the balance ring 23. Further, the lower end 24b of the circulation flow path member 24 is integrally bent by resin, and a flange portion 24b1 fitted to the bottom plate 22 is formed to protrude inward in the radial direction.

Further, a water conduit 24c integrally formed of a resin is formed on the back surface of the circulation flow path member 24, and a circulation water passage R is formed between the circulation flow path member 24 and the inner wall surface 21b of the main body plate 21. In other words, a pair of ribs (not shown) that are disposed apart from each other in the left-right direction (circumferential direction) are formed on the back surface of the circulation flow path member 24, and are provided to allow the circulation flow path member 24 to be formed. The fixing portion (not shown) fixed to the main body plate 21 is fixed. A gasket (not shown) is attached to the rib to be in close contact with the inner wall surface of the circulation flow path member 24, and the circulation flow path member 24 is fixed to the main body plate 21 through the fixing portion, whereby there is no entrance 27 When the inflowing washing water leaks in the middle, it can flow to the upper end of the circulation flow path member 24.

Further, a water conduit (not shown) integrally formed of a resin is formed on the back surface of the circulation flow path member 25 provided with the broken head collecting member 26, and the inner surface of the circulation flow path member 25 and the main body plate 21 ( A circulation water path (not shown) is formed between the two (not shown). However, the circulation flow path member 25 of the present embodiment is not formed to form the washing water to the upper end. Instead of the water passage R, the opening 26a of the crushing head collecting member 26 disperses the washing water into the washing tank 2 for circulation. In addition, a slit-shaped spout that discharges the washing water may be provided above the crushing head collecting member 26 of the circulating flow path member 25, instead of being limited to the circulation flow path member configured as described above. 25 people.

An inlet (introduction port) 27 for introducing the washing water into the circulation water passage R is provided at the bottom of the washing tub 2 located below the vertical direction of the circulation flow path member 24 described above. The bottom plate 22 provided with the inlet 27 is formed to be curved in such a manner that the bottom portion 22a to the side portion 22b have an R shape. Thereby, the flow direction of the washing water can be smoothly changed to the circulating water path R extending in the vertical direction. Further, the height H of the inlet 27 is a length from the lower side of the flange portion 24b1 to a lower line drawn in the vertical direction to the length of the bottom plate 22. Further, the height position Hm of the inlet 27 (refer to FIG. 5) means the height of the lower surface of the flange portion 24b1, in other words, the height of the upper end of the inlet 27.

Further, a discharge port 31 formed by forming an opening upward in the vertical direction is formed at the upper end of the circulating water passage R. The discharge port 31 is disposed to face the lower surface 23a of the balance ring 23. Thereby, the washing water discharged from the discharge port 31 collides with the lower surface 23a of the balance ring 23, whereby the washing water is discharged from the gap 32 formed between the flange portion 24a1 and the lower surface 23a toward the washing tank 2 (dispersed water) ).

Further, an inlet (introduction port) 28 (see FIG. 3) for introducing the washing water into the circulating water passage is formed in the bottom of the washing tub 2 located below the vertical direction of the circulation flow path member 25. By the entrance 28 was The introduced washing water is introduced into the crushing head collecting member 26 through a water conduit (not shown) formed between the circulation flow path member 25 and the main body plate 21, and after the crushing head is caught, Water is dispersed into the washing tub 2 by the opening 26a.

Figure 4 is a perspective view showing the inside of the stirring blade.

As shown in FIG. 4, a plurality of inner blades 33 (diameter fins) extending in the radial direction D from the center O of the rotating shaft are formed on the back surface (lower surface) of the stirring blade 3. In other words, the inner blade 33 is formed radially from the center O of the rotation axis. The inner blade 33 has a plate shape and is formed by projecting the back surface of the stirring blade 3 downward (upward in FIG. 4) in the vertical direction. Further, the inner blades 33 are configured to be arranged in the circumferential direction W at substantially equal angles.

In the present embodiment, the inner blade groups 33A and 33A are formed on the back surfaces of the two regions that are raised above the stirring blade 3 (see FIG. 2). Thereby, it is possible to ensure a large amount of water taken in between the inner blades 33. Each of the inner blade groups 33A is composed of five inner blades 33 and is disposed at an angular range of about 90 degrees. The inner blade group 33A functions not only as a function of the washing water to be circulated, but also as a reinforcing member that suppresses the laundry 12 from being thrown into the washing tub 2 and the stirring blade 3 is flexibly deformed.

Inner blade groups 33B and 33B are formed in a region between the inner blade group 33A and the inner blade group 33A. The inner blade group 33B is formed on the back surface of two regions recessed below the stirring blade 3 (see FIG. 2). Further, the inner blade group 33B is composed of three inner blades and is disposed within an angular range of about 90 degrees. The inner blade group 33B mainly functions as a reinforcing member that suppresses the deflection deformation of the stirring blade 3.

Further, on the center side of the back surface of the stirring blade 3 (a region of about one-half of the radius), annular ribs 34, 34, 34 which are formed concentrically or substantially concentrically with the central axis of rotation O are formed. . Thereby, the stirring blade 3 and the inner blade group 33A, 33A, 33B, and 33B can be reinforced.

Further, on the back surface (lower surface) of the stirring blade 3, the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37 extending in the circumferential direction W are formed at intervals in the radial direction D. Further, the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37 are each formed to be curved with substantially the same curvature as the curvature of the stirring blade 3.

The outer peripheral side rib 35 is a circumferential rib located on the outer peripheral side, and extends from the inner blade 33 at one end of the inner blade group 33A in the circumferential direction W to the inner blade 33 at the other end, and is integrally formed of all the inner blades 33 by resin. Further, the outer peripheral side ribs 35 are located on the front end side of each of the inner blades 33 of the inner blade group 33A. Here, the front end side of the inner blade 33 means the end portion on the outer peripheral side of the inner blade 33 or the proximal end on the outer peripheral side of the inner blade 33.

The inner circumferential side ribs 36 and 37 are located on the inner circumferential side of the outer circumferential side rib 35, and the inner circumferential side rib 36 is located on the outer circumferential side of the inner circumferential side rib 37. Further, the lengths of the inner circumferential side ribs 36, 37 in the vertical direction are formed shorter than the outer circumferential side ribs 35. Further, the length of the inner peripheral side rib 36 in the vertical direction is longer than that of the inner peripheral side rib 37.

The inner peripheral side ribs 36, 37 are integrally formed with the three inner inner blades 33 among the five inner blades 33 of the inner blade group 33A.

Figure 5 shows the inlet and radial ribs of the circulating water circuit. A cross-sectional view of the positional relationship. In addition, FIG. 5 is a cross-sectional view showing that the inner blade 33 at the center among the five inner blades 33 of the inner blade group 33A is cut so as to face the front.

As shown in Fig. 5, the surface of the agitating blade 3 has a slightly convex shape at the center portion, and has an inclined surface 3d which rises from the position of the annular rib 34 toward the outer peripheral side (outer side in the radial direction). At the position shown in FIG. 5, the outer peripheral edge portion of the agitating blade 3 is located above the upper end 22d of the bottom plate 22. Further, a hanging portion 3e extending toward the inlet 27 is formed on the outer peripheral edge portion of the stirring blade 3. The front end (lower end) of the hanging portion 3e is formed above the inlet 27 (the flange portion 24b1), and a gap S is formed between the surface of the circulation flow path member 24. The size of the gap S is set to a minimum distance at which the stirring blade 3 does not contact the circulation flow path member 24 during operation.

The outer peripheral side ribs 35 and the inner peripheral side ribs 36, 37 extend toward the bottom portion 22a of the bottom plate 22 located below, respectively, and are formed to be parallel to each other. Further, the outer peripheral side rib 35 and the inner peripheral side ribs 36, 37 are located on the outer peripheral side of half (one-half) of the radius of the stirring blade 3.

The front end (lower end) 35a of the outer peripheral side rib 35 is located on the side (bottom side) of the bottom portion 22a from the height position Hm (the lower surface of the flange portion 24b1) of the inlet 27 of the circulating water passage R. In other words, the front end (lower end) 35a of the outer peripheral side rib 35 is configured to be located lower than the upper end portion (height position Hm) of the inlet 27, and the inlet 27 and the outer peripheral side rib 35 are partially connected when viewed in the radial direction. overlapping. Further, the front end (lower end) 35a of the outer peripheral side rib 35 is located above the height position of half the height dimension H of the inlet 27. Thereby, the laundry water can be suppressed from being separated by the gap S The amount of escape, and the situation in which the flow rate of the washing water introduced into the inlet 27 is reduced can be suppressed.

The front end (lower end) 36a, 37a of the inner peripheral side ribs 36, 37 is located on the side farther from the bottom portion 22a than the front end (lower end) 35a of the outer peripheral side rib 35. In other words, the front end (lower end) 36a, 37a of the inner peripheral side ribs 36, 37 is located above the front end (lower end) 35a of the outer peripheral side rib 35. Further, the front end (lower end) 36a of the inner peripheral side rib 36 is located on the side closer to the bottom portion 22a than the front end (lower end) 37a of the inner peripheral side rib 37.

Further, a boss 3f connected to the rotating shaft 6a of the driving device 6 (see Fig. 1) is provided at the center O of the rotating shaft of the stirring blade 3. The boss 3f is formed to protrude downward and is formed on the back surface of the stirring blade 3. When the front end (lower end) of the boss 3f is the reference position Hs, the height of the front end 35a of the outer peripheral side rib 35 is set to H1, and the height of the front end 36a of the inner peripheral side rib 36 is set to H2. When the height dimension of the front end 37a of the inner peripheral side rib 37 is H3, the relationship of H1 < H2 < H3 is formed.

Further, the length of the outer peripheral side rib 35 in the vertical direction from the back surface of the stirring blade 3 is set to be longer than half (one-half) of the length from the back surface to the reference position Hs. Moreover, the length of the inner peripheral side ribs 36 and 37 in the vertical direction from the back surface of the stirring blade 3 is set to be less than half (one-half) of the length from the back surface to the reference position Hs.

In the washing machine 1 provided with the circulation flow path member 24 as described above, the circulation water passage R is configured to communicate to the inner peripheral side of the bottom plate 22 (the inner bottom of the washing tank 2) and the pump chamber P formed by the inner blades 33 provided on the back surface of the stirring blade 3 (see Fig. 1).

In the washing machine 1 configured as described above, for example, the laundry 12 is put into the washing tub 2, and when the power switch is turned "ON" and the start switch (not shown) is turned on, the control unit 19 is turned on. The solenoid water supply valve 16 is controlled to be supplied with water to a predetermined water level and moved to a washing (laundry) project. In the washing process, the motor of the drive unit 6 is rotated right by the washing water flow, ‧ rest, left rotation, rest, and controlled by the control unit 19 to rotate. The rotation of the motor of the driving device 6 controlled as described above is transmitted to the agitating blade 3, the agitating blade 3 and the inner blade 33 are rotated, the laundry 12 in the washing tub 2 is stirred with the washing water, and the washing 12 is washed. . Here, the rotational speed of the motor of the drive unit 6 is set to, for example, 90 to 150 rotations per minute.

On the other hand, the washing water on the inner side of the stirring blade 3 is rotated by the inner blade 33 by the rotation of the stirring blade 3, is extruded to the outside by centrifugal force, and is pushed up in the circulating water passage R, and is discharged from the discharge port 31. It is intermittently discharged upwards. The washing water discharged from the discharge port 31 collides with the lower surface 23a of the balance ring 23, and the direction of the washing water is changed to the inside of the washing tank 2, and is intermittently injected into the washing tank 2. When the washing water is pushed out to the circulating water passage R by the inner blade 33 of the agitating blade 3, the through hole 22c (refer to FIG. 2) which is provided in the bottom portion 22a of the bottom plate 22 and communicates with the outer groove 7 is Supply new laundry water.

Fig. 6 is a perspective view showing the inside of the stirring blade as a comparative example. Among them, the stirring blade 100 of the comparative example and the stirring blade of this embodiment The shape of the ribs in the circumferential direction of the 3 series is different, and the shape of the surface of the other stirring blade 3, the shape of the inner blade 33 and the annular rib 34 are the same. In the stirring blade 100, the same components as those of the agitating blade 3 are denoted by the same reference numerals and the description thereof will not be repeated.

As shown in FIG. 6, the stirring blade 100 is equipped with the circumferential direction ribs 101 and 102. The circumferential direction rib 101 is formed at the same position as the inner circumferential side rib 36 of the present embodiment, and the circumferential rib 102 is formed at the same position as the inner circumferential side rib 37 of the present embodiment. Further, the lengths in the vertical direction of the circumferential direction ribs 101 and 102 are formed longer than the inner circumferential side ribs 36 and 37 of the present embodiment. Further, the distal ends 101a and 102a of the circumferential direction ribs 101 and 102 are disposed closer to the bottom portion 22a than the distal ends 36a and 37a of the inner circumferential side ribs 36 and 37 of the present embodiment.

Fig. 7 shows the flow of water by the circumferential ribs, (a) is the embodiment, and (b) is a comparative example. Among them, the size of the white arrow indicates the flow rate of the washing water flowing through the circulating water path R.

First, referring to the comparative example of FIG. 7(b), the circumferential ribs 101 and 102 are located on the inner peripheral side of the front end of the inner blade 33. Further, the front end 101a of the circumferential direction rib 101 is located below the half (one-half) of the height dimension H of the inlet 27. Further, the front end 102a of the circumferential direction rib 102 is located on the side closer to the bottom portion 22a than the front end 101a of the circumferential direction rib 101.

In the comparative example of Fig. 7 (b), the washing water is held between the adjacent inner blades 33, and in this state, the agitating blades 100 are rotated to exert an outward centrifugal force on the washing water system. At this time, on the outermost side The washing water of the lower portion of the space Q10 between the annular rib 34 and the circumferential rib 102 is shown by the white arrow Y10, passing between the front end 102a and the bottom 22 (the bottom surface 22a1) of the circumferential rib 102. It is extruded toward the outer peripheral side. Further, the washing water located at the upper portion of the space Q10 is restricted from flowing the washing water to the outer peripheral side by the circumferential direction ribs 102.

Further, the washing water in the lower portion of the space Q11 between the circumferential direction rib 101 and the circumferential direction rib 102 is shown by the white arrow Y11, passes through the front end 101a and the bottom portion 22a (bottom surface 22a1) of the circumferential direction rib 101. It is extruded to the outer peripheral side. Further, the washing water located at the upper portion of the space Q11 restricts the flow of the washing water to the outer peripheral side by the circumferential direction ribs 101.

Further, the washing water in the space Q12 between the circumferential direction rib 101 and the hanging portion 3e is as shown by the white arrow Y12, and a part of the washing water is directed toward the inlet 27 together with the washing water from the spaces Q10, Q11. Extrusion. Further, the remaining washing water is extruded into the washing tub 2 by the gap S between the stirring blade 100 and the circulation flow path member 24.

In the agitating blade 100 having the shape shown above, the flow rate of the washing water extruded to the outer peripheral side by the circumferential ribs 101, 102 formed at the position close to the bottom surface 22a1 of the bottom plate 22 by the front ends 101a, 102a is reduced. . Further, a space Q12 opposed to both the gap S and the inlet 27 is formed toward the outer side in the radial direction (the side where the washing water is squeezed by the centrifugal force), thereby escaped by the gap S as indicated by the white arrow Y13. The flow rate of the washing water will increase, and the flow rate of the washing water flowing to the inlet 27 as indicated by the white arrow Y14 will decrease.

On the other hand, in the present embodiment shown in Fig. 7 (a), the washing water in the lower portion of the space Q1 between the outermost annular rib 34 and the inner peripheral side rib (circumferential rib) 37 is provided. As indicated by the white arrow Y1, it is extruded toward the outer peripheral side between the front end 37a and the bottom portion 22a. Further, the washing water in the upper portion of the space Q1 is formed as a white bottom arrow Y2, and is formed by the inner peripheral side rib 37 so as to be flowed obliquely downward, and is extruded to the outer peripheral side.

Moreover, the washing water which is located in the lower part of the space Q2 between the inner peripheral side rib (circumferential rib) 36 and the inner peripheral side rib (circumferential rib) 37 is shown by the white arrow Y3, and passes through the front end. The gap between 36a and the bottom portion 22a is extruded to the outer peripheral side. Further, the washing water in the upper portion of the space Q2 is formed by the inner peripheral side rib 36 so as to be inclined downward toward the outer side, as shown by the white arrow yoke 36.

Further, the washing water in the lower portion of the space Q3 between the inner peripheral side rib (circumferential rib) 36 and the outer peripheral side rib (circumferential rib) 35 is as shown by the white arrow Y5, and is oriented toward the outer peripheral side. Extrused. Further, the washing water in the upper portion of the space Q3 is formed as a downwardly directed water flow as shown by the white arrow Y6, and is extruded to the outer peripheral side. Next, the washing water between the front end 35a of the outer peripheral side rib 35 and the bottom surface 22a1 is extruded to the inlet 27 substantially as indicated by the white arrow Y7.

In the washing machine 1 of the present embodiment configured as described above, the front ends 36a and 37a of the inner peripheral side ribs 36 and 37 are formed at positions farther from the bottom surface 22a1 than the front end 35a of the outer peripheral side rib 35, and thus The washing water of the spaces Q1 and Q2 is extruded to the outer peripheral side, and can be caused to occur The lower water flow can extrude substantially the entire amount of the washing water in the spaces Q1 and Q2 to the space Q3 on the outer peripheral side. As a result, in the present embodiment, the rigidity of the stirring blade 3 is reduced, and the rotation speed of the stirring blade 3 is not excessively increased, and the amount of circulating water can be increased more than ever.

In the present embodiment, the distal end 35a of the outer peripheral side rib 35 is located below the height position Hm (see FIG. 5) of the inlet 27 (a position close to the bottom surface 22a1 side). Thereby, the washing water can be induced to the bottom portion 22a side, and the washing water from the outer peripheral side rib 35 to the outer peripheral side can be easily introduced into the inlet 27, and the flow rate of the washing water introduced into the circulating water passage R can be increased. Further, since the front end 35a of the outer peripheral side rib 35 is located lower than the height position Hm (refer to FIG. 5) of the inlet 27, the washing water from the outer peripheral side rib 35 to the outer peripheral side can be immediately introduced to the inlet 27, such as As indicated by the white arrow Y8, the flow rate of the washing water escaped by the gap S can be further reduced than in the case of Fig. 7(b).

However, in the present embodiment, when the outer peripheral side ribs 35 are not provided and only the inner peripheral side ribs (circumferential ribs) 36 and 37 are provided, the flow rate ratio of the washing water flowing through the circulating water passage R can be made. The situation in 7(b) is even more increased, but the amount of laundry water escaped by the gap S will also increase. Therefore, in the present embodiment, the circumferential ribs are not provided with only the inner peripheral side ribs 36 and 37, but the outer peripheral side ribs 35 are additionally provided to allow the washing water flowing through the circulating water passage R. The flow rate is increased more than in the case of Fig. 7(b).

Further, in the present embodiment, the outer peripheral side rib 35 is located on the outer peripheral end side (outer peripheral end) of the inner blade 33. Thereby, the washing water can be made The amount of escape of the gap S is reduced, and the flexural deformation of the inner blade 33 can be suppressed, so that the rigidity of the agitating blade 3 can be improved.

Further, in the present embodiment, the front ends 36a and 37a of the inner peripheral side ribs 36 and 37 are located closer to the bottom portion 22a toward the outer peripheral side. Thereby, as the washing water is directed toward the outer peripheral side, it is easier to induce the washing water toward the lower side, so that it is easier to introduce more washing water into the inlet 27.

Fig. 8 is a view showing the image of spray diffusion, (a) is an embodiment, and (b) is a comparative example. In addition, any of (a) and (b) omits the illustration of the balance ring 23.

The washing tank 120 as a comparative example shown in Fig. 8(b) is provided with the upper plate 110a toward the inner side of the washing tank 120, and the upper end of the circulating flow path member 110 is formed like the circulating flow path member 24 above. Open the spit out 31. In the configuration of the washing tank 120, in the configuration of Fig. 7(b), if the washing water is discharged, as shown by the area U10 shown by the oblique line in Fig. 8(b), the diffusion angle of the washing water is restricted. Being spit out.

On the other hand, in the washing tank 2 of the present embodiment shown in Fig. 8(a), the circulation flow rate of the washing tank 2 flowing through the circulating water passage R is caused by the outer peripheral side rib 35 and the inner peripheral side ribs 36, 37. As a result, as shown in a region U1 indicated by oblique lines in Fig. 8(a), the diffusion angle of the washing water discharged from the discharge port 31 of the circulation flow path member 24 can be made larger than that of Fig. 8(b). Thereby, in the washing process or the flushing process, the washing water can be spread to the entire laundry.

Further, in the present embodiment, the circulation water passage R is provided with a discharge port 31 that opens upward, and the discharge port 31 is disposed to face the lower surface 23a of the balance ring 23 provided in the washing tank 2. Thereby, since the upper plate 110a of the circulation flow path member 110 of FIG. 8(b) is unnecessary, the washing water can directly abut against the lower surface 23a of the balance ring 23, and the diffusion angle of the washing water can be enlarged.

Further, in the present embodiment, since the amount of circulating water can be increased, the collection rate of the foreign matter (broken head) trapped by the crushing head collecting member 26 can be improved.

However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. In the above-described embodiment, the case where four circulating flow path members 24 and 25 are provided will be described as an example. However, one, two, three, or five or more circulating flow path members may be provided. By.

In the present embodiment, the case where three circumferential ribs (the outer circumferential side rib 35 and the inner circumferential side ribs 36 and 37) are provided will be described as an example. However, the present invention is not limited to three. For example, the two circumferential ribs (the outer circumferential side rib 35 and the inner circumferential side rib) may be four or more circumferential ribs (the outer circumferential side rib 35 and the three inner circumferential side ribs). It changes suitably in the range which does not damage the rigidity of the stirring blade 3.

In the present embodiment, the case where the front end 36a of the inner peripheral side rib 36 is located below the front end 37a of the inner peripheral side rib 37 is described as an example. However, the front ends 36a and 37a may be identical to each other. Inner peripheral side ribs 36, 37 of length.

In the present embodiment, the shape in which the shape of the agitation blade 3 is undulated in the circumferential direction will be described as an example. However, the shape of the agitation blade 3 is not limited to the shape shown above, and may be applied to a shape along the circumferential direction. Stirring wing. At this time, by providing the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37, the same effects as those of the above-described embodiment can be obtained.

3‧‧‧Agitating wing

13d‧‧‧Sloping surface

3e‧‧‧下下

3f‧‧‧ bushing

6a‧‧‧Rotary axis

21‧‧‧ body board

22‧‧‧floor

22a‧‧‧ bottom (bottom)

22a1‧‧‧ bottom

22b‧‧‧ side

22d‧‧‧top

24‧‧‧Circular flow path components

24b1‧‧‧Flange

27‧‧‧ Entrance

33‧‧‧ inner blade (diameter rib)

34‧‧‧ring ribs

35‧‧‧Outer peripheral ribs (circumferential ribs)

35a‧‧‧ front end of the peripheral rib

36, 37‧‧‧ inner peripheral side ribs (circumferential ribs)

36a, 37a‧‧‧ front end of the inner peripheral rib

H, H1, H2, H3‧‧‧ height dimensions

Hm‧‧‧ height position of the entrance

Hs‧‧ reference position

O‧‧‧Rotary axis center

P‧‧‧ pump room

R‧‧‧Circular waterway

S‧‧‧ gap

Claims (5)

A washing machine characterized by comprising: a washing tank; an agitating wing provided at a bottom of the washing tank; and water guiding the water in the washing tank extruded when the agitating blade is rotated to the washing tank a circulation water passage in which the upper portion is circulated, wherein the agitating blade is provided on the inner side of the agitating blade with a plurality of radial direction fins extending in the radial direction; and extending in the circumferential direction and disposed at intervals in the radial direction a plurality of circumferential ribs, the front end rib of the outer peripheral side of the agitating blade, that is, the front end of the outer peripheral rib is located closer to the bottom than the height of the inlet of the circulating water passage, and is located at a distance from the outer periphery The front end rib of the side rib piece on the inner peripheral side, that is, the front end of the inner peripheral side rib is located farther from the front side than the front end of the outer peripheral side rib. The washing machine according to claim 1, wherein the outer peripheral side rib is located on an outer peripheral end side of the radial rib. A washing machine according to claim 1 or 2, further comprising a plurality of inner circumferential side ribs, wherein a front end of the inner circumferential side rib is located closer to the bottom side as it goes toward the outer circumferential side. The washing machine according to any one of claims 1 to 3, wherein the circulation water passage system is provided with an opening formed upward The discharge port is disposed to face the lower side of the balance ring provided in the washing tank. A washing machine characterized by comprising: a washing tank; an agitating wing provided at a bottom of the washing tank; and water guiding the water in the washing tank extruded when the agitating blade is rotated to the washing tank a circulating water passage in which the upper portion is circulated, wherein the agitating blade is provided on the inner side of the agitating blade: a radial rib extending in a radial direction; and a circumferential rib extending in a circumferential direction at an outer circumference of the agitating blade The front end rib of the side, that is, the front end of the outer peripheral side rib is located closer to the bottom than the height of the inlet of the circulating water passage.