JPH1033883A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly sprinkle washing water from an ejection port to clothes, to reduce washing irregularity and to improve washing performance even in the case that a water level is set relatively low and the water amount of the washing water ejected from the upper part of a circulation water path is little. SOLUTION: A pulsator 2 is freely rotatably disposed to the bottom part of a washing tank 1 and the circulation water path 16 for sending water is constituted from a pump chamber 14 formed on the back surface side of the pulsator 2 to the side wall upper part of the washing tank 1 by a guide wall part 17. For the guide wall part 17, an almost L-shaped part 17b is extended so as to form the ejection port 18 between a front wall upper end part 17a on the rear wall upper end side and the front wall upper end part 17a is formed in an almost circular arcuate shape projected upwards.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention circulates washing water by using a circulation channel provided in a washing tub to promote the dissolution of the detergent, and to wash the clothes while applying the washing water to the clothes from above the washing tub. It relates to a washing machine.

[0002]

2. Description of the Related Art Conventionally, this type of washing machine has been configured as shown in FIG. Hereinafter, the configuration will be described.

[0003] As shown in the figure, a washing tub 1 has a pulsator 2 rotatably arranged on the bottom surface, and a mounting flange 3 on the back surface of the bottom surface. A fluid balancer 4 containing a liquid is fixed to an upper portion of the washing tub 1. Aquarium 5
Includes a washing tub 1 and a substrate 6 attached to an outer bottom thereof, and a motor 8 for driving the pulsator 2 via a driving mechanism 7 on the substrate 6. In addition, the water tank 5 is supported from the upper corner of the outer frame 9 via a suspension 10 for vibration isolation.

A circulating water channel 12 is provided on the inner surface of the washing tub 1 and is enclosed by a guide wall 11 which is open upward, and when the pulsator 2 rotates, the washing water on the back of the pulsator 2 causes the washing water on the back of the pulsator 2 to flow. Pump chamber 1 formed on the outer periphery of blade 13
4 through the circulating water channel 12 and discharge from the discharge port 15 provided above the circulating water channel 12 into the washing tub 1.

[0005]

However, in such a conventional washing machine, the shape of the flow of the washing water discharged from the discharge port 15 in the upper part of the circulation channel 12 depends on the type and amount of the clothes. The size of the movement of the clothes in the inside, the positional relationship between the discharge port 15 and the water surface, and the shape of the discharge port 15 are greatly affected, and it is not possible to sprinkle the washing water uniformly on the clothes in the washing tub 1 at all times, Wash tub 1 containing washing water and foam containing detergent
There was a problem that the powder was scattered outside and the washing unevenness was increased.

The present invention solves the above-mentioned problem, and even when the water level is set relatively low and the amount of washing water discharged from above the circulation channel is small, the washing water from the discharge port is uniformly applied to the clothes. The purpose is to sprinkle, reduce uneven washing and improve washing performance.

[0007]

According to the present invention, in order to achieve the above object, a pulsator is rotatably arranged at the bottom of a washing tub, and a pump tub formed on a back side of the pulsator by a guide wall portion is provided with a washing tub. The guide wall has a substantially L-shaped portion extending from the upper end of the guide wall to form a discharge port between the upper end of the front wall and the upper end of the front wall. The upper end is formed in a substantially arc shape projecting upward.

Thus, even when the water level is set relatively low and the amount of washing water discharged from the upper part of the circulation channel is small, the washing water from the discharge port can be evenly sprinkled on the clothes, and uneven washing can be achieved. The cleaning performance can be reduced and the cleaning performance can be improved.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 of the present invention comprises a washing tub, a pulsator rotatably disposed at the bottom of the washing tub, and a pump chamber formed on the back side of the pulsator. A guide wall portion that constitutes a circulation channel for feeding water toward the upper side of the side wall of the washing tub, wherein the guide wall portion has a substantially L shape so as to form a discharge port between the upper end portion of the rear wall and the upper end portion of the front wall. The upper end of the front wall is formed in a substantially circular arc shape protruding upward, and at the center of the discharge port, the gap between the substantially L-shaped portion and the upper end of the front wall is narrow. Since the space between the substantially L-shaped portion and the upper end of the front wall is widened, the water discharged from above the circulation channel can disperse the mainstream momentum from the center of the discharge port to both ends, and Even if the water level of the washing water in the inside is low and the amount of water discharged is relatively small, it can be washed over a wide area and evenly Can sprinkled, it is possible to improve the cleaning performance by reducing the washing unevenness.

According to a second aspect of the present invention, in the first aspect of the present invention, the substantially L-shaped portion is inclined upward with respect to the horizontal direction, and is provided between the substantially L-shaped portion and the upper end of the substantially arc-shaped front wall. With a discharge port formed, the water level of the wash water in the washing tub is low, and even when the amount of water to be discharged is small, the wash water discharged from the discharge port can reach the vicinity of the center of the washing tub, and Since the upper end of the front wall is formed in a substantially circular arc shape protruding upward, the washing water can be evenly sprinkled over a wide area. In addition, by suppressing the upward inclination of the substantially L-shaped portion, when a plurality of discharge ports are present on a substantially diagonal line of the washing tub and a relatively large amount of water is discharged, the washing discharged from the plurality of discharge ports is performed. It is possible to suppress the scattering of detergents and bubbles generated by the collision of water with each other.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the substantially L-shaped portion is provided so that the upper end portion of the front wall of the guide wall portion is formed from above in both the radial direction and the radial direction. Covering and diverging toward the center of the washing tub. The washing water rises in the circulation channel, and is discharged in a substantially fan shape along the lower surface of the upper L-shaped portion. Regardless of the size of the movement of the clothes, such as when washing, the washing water can be evenly sprinkled on the clothes in the washing tub from the inner end of the washing tub over a wide range every time the pulsator is inverted, The generation of a portion that hangs on clothing and a portion that does not hang can prevent unevenness in washing that occurs.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIGS. 1 and 2, the circulation water passage 16 is contained in a guide wall portion 17,
Pump chamber 1 formed on the outer periphery of back blade 13 of pulsator 2
4 to the lower part of the fluid balancer 4. The guide wall portion 17 has a substantially L-shaped portion 17b extending so as to form a discharge port 18 between the rear wall upper end portion and the front wall upper end portion 17a,
The upper end portion 17a of the front wall is formed in a substantially arc shape projecting upward. Here, the interval between the front wall upper end portion 17a and the substantially L-shaped portion 17b in the discharge port 18 is S = 4 to 10 mm at the center,
It is configured so that T = 6 to 12 mm at both ends and T−S> 2.

The operation of the above configuration will be described. Clothes and detergent are put into the washing tub 1 and water is supplied to a predetermined water level. Then, in synchronization with the rotation of the pulsator 2, the washing water on the back surface of the pulsator 2 is changed every time it is inverted. The water is discharged from the pump chamber 14 formed on the outer periphery of the back blade 13 through the circulation channel 16 into the washing tub 1 through the discharge port 18 between the upper end 17a of the front wall of the guide wall 17 and the substantially L-shaped portion 17b. You.

Here, since the distance between the discharge port 18 and the substantially L-shaped portion 15b of the upper end portion 17a of the front wall increases from the center to both ends (S <T), the water level in the washing tub 1 is increased. Is low, the amount of washing water pumped up and discharged above the circulation channel 16 is relatively small, and the discharge pressure is also low. When the main flow at the center of the circulation channel 16 reaches the front wall upper end 17a, the discharge port Disperse from the center of 18 toward both ends.
For this reason, the shape of the flow of the washing water discharged from the discharge port 18 becomes wide, and the washing water can be sprinkled uniformly over a wide area of the garment while maintaining a substantially fan shape, thereby reducing unevenness in washing. Performance can be improved.

(Embodiment 2) As shown in FIG.
Are arranged substantially diagonally to each other,
Are included in the guide wall 20. The guide wall portion 20
Then, the discharge port 21 is provided between the upper end of the wall and the upper end 20a of the front wall.
The L-shaped portion 20b is extended so as to form the following. The substantially L-shaped portion 20b has an upward angle W of 5 to 15 degrees with respect to the horizontal direction. The upper end portion 20a of the front wall is formed in a substantially arc shape projecting upward. Other configurations are the same as those in the first embodiment.

The operation of the above construction will be described. After the clothes and the detergent are put into the washing tub 1 and water is supplied to a predetermined water level, the washing water on the back surface of the pulsator 2 is inverted every time the pulsator 2 is rotated, in synchronization with the rotation of the pulsator 2. The water is discharged from the pump chamber 14 formed on the outer periphery of the back blade 13 through the circulation channel 19 into the washing tub 1 through the discharge port 21 between the upper end 20a of the front wall of the guide wall 20 and the substantially L-shaped portion 20b. You.

On the other hand, when the water level in the washing tub 1 is low, the amount of washing water pumped up and discharged above the circulation channel 19 is small, the discharge pressure is low, and the reach D of the washing water is short. Here, when the upward angle W of the substantially L-shaped portion 20b of the guide wall portion 20 with respect to the horizontal direction is increased, the reaching distance D of the washing water discharged from the discharge port 21 is increased as shown in FIG.

In this embodiment, the substantially L-shaped portion 20b has an upward angle W of 5 degrees or more with respect to the horizontal direction so that the washing water discharged from the discharge port 21 reaches the vicinity of the center d of the washing tub 1. be able to. Moreover, since the circulation water passage 19 is disposed substantially diagonally on the washing tub 1 and the upper end 20a of the front wall is formed in a substantially arc shape protruding upward, the washing water is widely and widely spread over the entire surface of the washing tub 1. Can be sprinkled evenly.

Next, the water level in the washing tub 1 is set to the high water level P1.
When the amount of clothes is small, the washing water pumped up and discharged above the circulation water channel 19 has a relatively large amount of water and a high discharge pressure, and thus can be easily linearly discharged in the horizontal direction. Here, if the upward angle W of the substantially L-shaped portion 20b of the guide wall portion 20 with respect to the horizontal direction is increased, the reaching distance D of the washing water discharged from the discharge port 21 becomes longer, so The washing water discharged from the discharge port 21 collides with each other considerably above the water surface, and the scattering amount F of the washing water outside the washing tub 1 increases as shown in FIG.

In this embodiment, the upward angle W of the substantially L-shaped portion 20b is 15 degrees or less with respect to the horizontal direction.
The discharged washing water has a free surface 22 in a dome shape.
While colliding near the water surface, or each of them directly falls on the water surface before colliding with each other, and the amount of the scattered washing water out of the washing tub 1 becomes f as shown in FIG. And the scattering of detergent and foam can be suppressed.

(Embodiment 3) As shown in FIGS. 6 and 7, the circulating water passage 23 is included in a guide wall portion 24,
The guide wall portion 24 is provided at the upper end side of the rear wall with the upper end portion 24 of the front wall.
a so as to form a discharge port 25 therebetween.
Has been extended. The substantially L-shaped portion 24b is located at the upper end 2 of the front wall.
4a is covered from above in both the radial direction and the radial direction, has a divergent shape toward the center of the washing tub 1, and the edge 24c is chamfered.

A rib 24d is provided on the upper surface of the substantially L-shaped portion 24b.
And is fitted to the lower part of the fluid balancer 4. Here, the substantially L-shaped portion 24b is formed at a position lower than the lower surface of the fluid balancer 4 such that the step Y between the lower end of the substantially L-shaped portion 24b and the lower surface of the balancer 4 satisfies Y ≧ 0. Other configurations are the same as those in the first embodiment.

The operation of the above construction will be described. After the clothes and detergent are put into the washing tub 1 and water is supplied to a predetermined water level, the washing water on the back of the pulsator 2 is changed every time the pulsator 2 is inverted, in synchronization with the rotation of the pulsator 2. The water is discharged from the pump chamber 14 formed on the outer periphery of the back blade 13 through the circulation channel 23 into the washing tub 1 through the discharge port 25 between the upper end 24a of the front wall of the guide wall 24 and the substantially L-shaped portion 24b. You.

At this time, the washing water passes from the circulation channel 23 to the upper end portion 24a of the front wall of the guide wall portion 24 and immediately collides with the lower surface of the substantially L-shaped portion 24b. While being guided by the substantially L-shaped portion 24b as it is,
It is not interfered by the lower surface of the fluid balancer 4 and forms a substantially fan-shaped flowing water shape 26 that spreads out and is discharged.

Therefore, when a large amount of bulky clothes are washed, even when the movement of the cloth in the washing tub 1 is suppressed due to the bulkiness, the entire surface of the washing tub 1 is extended from the peripheral end in the washing tub 1 at a high position. A wide range of washing water can be sprinkled, dissolving the detergent can be promoted to improve the washing performance, and the part where the washed washing water hangs on the clothes and the part that does not hang can prevent the uneven washing that occurs. can do. In addition, it is possible to promote the submersion of the clothes and prevent the clothes from jumping out of the washing tub 1.

In this embodiment, the case where the number of the circulation water passages 23 is one is described. However, if a plurality of circulation water passages 23 are provided in the washing tub 1, the effect is further enhanced. Nor.

[0028]

As described above, according to the first aspect of the present invention, the washing tub, the pulsator rotatably arranged at the bottom of the washing tub, and the back side of the pulsator are formed. A guide wall configured to circulate water from a pump room toward an upper side wall of the washing tub, and the guide wall forms a discharge port between the upper end of the front wall and the upper end of the front wall. Since the substantially L-shaped portion is extended as described above and the upper end of the front wall is formed in a substantially arc shape protruding upward, water discharged from the discharge port above the circulating water channel exerts the mainstream force on the discharge port. It can be dispersed from the center to both ends, and even if the amount of water discharged is relatively small, it can be spread widely and evenly over a wide area.Washing water can be evenly distributed, reducing uneven washing and improving washing performance. it can.

According to the second aspect of the present invention, the substantially L-shaped portion is inclined upward with respect to the horizontal direction, so that the discharge port is formed between the substantially L-shaped portion and the upper end of the substantially arc-shaped front wall. Even when the water level of the washing water in the washing tub is low and the amount of discharged water is small, the washing water discharged from the discharge port can reach the vicinity of the center of the washing tub, and the upper end of the front wall projects upward. Since it is formed in a substantially circular arc shape, the washing water can be sprinkled evenly and widely over a wide area. In addition, by suppressing the upward inclination of the substantially L-shaped portion, when a plurality of discharge ports are present on a substantially diagonal line of the washing tub and a relatively large amount of water is discharged, the washing discharged from the plurality of discharge ports is performed. It is possible to suppress the scattering of detergents and bubbles generated by the collision of water with each other.

According to the third aspect of the present invention, the substantially L-shaped portion covers the upper end of the front wall of the guide wall from above in both the radial direction and the radial direction, and at the same time, toward the center of the washing tub. As the washing water rises up the circulation channel and is discharged in a substantially fan-like shape along the lower surface of the upper L-shaped portion, the size of the movement of the clothes such as when washing a lot of bulky clothes is reduced. Regardless, the washing water can be evenly sprinkled on the clothes in the washing tub over a wide range every time the pulsator is inverted from the inner circumferential end of the washing tub, and the part where the discharged washing water is applied to the clothes and the part that does not splash This can prevent the occurrence of uneven washing.

[Brief description of the drawings]

FIG. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the washing machine.

FIG. 3 is a sectional view of a main part of a washing machine according to a second embodiment of the present invention.

FIG. 4 is a characteristic diagram showing an inclination angle of a substantially L-shaped portion of the washing machine and a reaching distance of discharged washing water.

FIG. 5 is a characteristic diagram showing the inclination angle of a substantially L-shaped portion of the washing machine and the amount of washing water scattered outside the washing tub.

FIG. 6 is a sectional view of a main part of a washing machine according to a third embodiment of the present invention.

FIG. 7 is a sectional view of a main part of the washing machine.

FIG. 8 is a sectional view of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing tub 2 Pulsator 14 Pump room 16 Circulation channel 17 Guide wall 17a Upper end of front wall 17b Substantially L-shaped part 18 Discharge port

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Junji Kamiya 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A washing tub, a pulsator rotatably arranged at the bottom of the washing tub, and a circulating water passage for sending water from a pump chamber formed on the back side of the pulsator toward an upper side wall of the washing tub. A substantially L-shaped portion is formed on the upper end side of the rear wall so as to form a discharge port between the upper end portion of the front wall and the upper end portion of the front wall. A washing machine formed in a substantially arc shape that protrudes from the washing machine. 2. The washing machine according to claim 1, wherein the substantially L-shaped portion is inclined upward with respect to the horizontal direction, and a discharge port is formed between the substantially L-shaped portion and an upper end of the substantially arc-shaped front wall. 3. The substantially L-shaped portion covers the upper end portion of the front wall of the guide wall portion from above in both the radial direction and the radial direction, and has a divergent shape toward the center of the washing tub. The washing machine as described.