JP3146846B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for circulating detergent liquid by using a circulating water channel provided in a washing and dewatering tub to promote the dissolution of the detergent and for washing while applying circulating water to clothes from above. It is about the 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 and dewatering tub 1 has a pulsator 2 rotatably arranged on the bottom surface and a mounting flange 3 attached to the back surface of the bottom surface. Water receiving tank 4
Is provided outside the washing and dewatering tub 1, and a motor 5 for driving the washing and dewatering tub 1 and the pulsator 2 is attached to the back surface of the water receiving tub 4. The water receiving tank 4 is supported on the outer frame 6 by a suspension 7 so as to prevent vibration. A fluid balancer 8 containing a liquid is fixed to the upper portion of the washing and dewatering tub 1.

A circulating water passage 9 is formed on the side surface of the washing and dewatering tub 1, and the pump on which the water on the back of the pulsator 2 is formed on the outer periphery of the lower blade 10 of the pulsator 2 by the rotation of the pulsator 2. From the chamber 11, through the circulation channel 9, the fluid reaches the fluid balancer 8, and is discharged from the opening 12 of the circulation channel 9 into the washing and dewatering tub 1.

[0005]

In such a conventional washing machine, the amount of water circulated and discharged through the circulating water passage 9 is greatly affected by the positional relationship between the opening 12 and the water surface, and the amount of clothes to be washed is small and the water level is low. Sometimes, the amount of water circulated and discharged is small, and there is a problem that it is difficult to promote the dissolution of the detergent and to improve the washing by applying the detergent solution to the clothes.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to make it possible to obtain a sufficient amount of discharged water even when the water level in a washing and dewatering tub is low, to promote the dissolution of detergent, and to improve the cleaning performance. This is the first purpose.

It is a second object of the present invention to make the discharge pattern from the circulating water channel substantially fan-shaped and to sprinkle the clothes in the washing and dewatering tub evenly.

[0008]

In order to achieve the first object, the present invention provides a pulsator rotatably disposed at the bottom of a washing and dewatering tub, and an pulsator disposed at an upper portion of the washing and dewatering tub. Fluid balancer, a substantially cylindrical first circulating water passage formed from the pump chamber formed on the outer periphery of the lower blade of the pulsator to the fluid balancer, and an upper part having the same shape as the first circulating water passage. A second circulation channel formed halfway along the side wall of the washing and dewatering tub, wherein the second circulation channel has an opening of a discharge port provided in a center direction and a horizontal direction of the washing and dehydration tub. Is the first problem solving means.

Further, in order to achieve the second object, the second circulating water channel of the first means for solving the above problems is to increase the opening area of the water channel in front of the discharge port, and to wash the opening of the discharge port with washing. The second problem-solving means is provided in a substantially arc shape that is convex toward the center of the dewatering tank.

[0010]

According to the first aspect of the present invention, there is provided:
Since the position of the discharge port of the second circulation channel is provided in the middle of the side wall of the washing and dewatering tub, a sufficient discharge amount can be obtained even when the water level in the washing and dewatering tub is low. Even if it is low, the dissolution of the detergent is promoted, and the washing by applying the detergent liquid to the clothes can be improved.

According to the second means for solving the problem, the discharge pattern from the second circulating water channel has a substantially fan shape, so that the clothes in the washing and dewatering tub can be evenly sprinkled.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the first circulation channel 13 has:
It is formed in a substantially cylindrical shape from a pump chamber 11 formed on the outer periphery of the lower blade 10 of the pulsator 2 to a fluid balancer 8. The second circulation channel 14 has the same shape as the first circulation channel 13, and has an upper portion formed partway along the side wall of the washing and dewatering tub 1. In the second circulation channel 14, the opening 15 of the discharge port is provided in the center direction and the horizontal direction of the washing and dewatering tub 1, and as shown in FIG. 2, the opening area of the channel is increased in front of the discharge port, and The opening 15 of the discharge port is provided in a substantially arc shape that is convex toward the center of the washing and dewatering tub.

When the water level in the washing and dewatering tub 1 is high (water level A), the rotation of the pulsator 2 causes the water on the back of the pulsator 2 to pass through the first circulating water channel 13 to the fluid balancer. 8 and opening 1
2 discharges into the washing and dewatering tub 1. At this time, the opening 15 of the second circulating water channel 14 is below the water surface, and the circulating water is discharged into the water.

Next, when the water level of the washing and dewatering tub 1 is low (water level B), the circulating water cannot be discharged from the opening 12 of the first circulating channel 13, but the opening 1 of the second circulating channel 14.
5 can discharge the circulating water.

At this time, the movement of the water in the second circulation channel 14 is as follows. First, in the second circulation channel 14, the water rises almost vertically, changes the direction of the flow by 90 degrees near the discharge port, and further increases the opening area of the channel near the discharge port. 15 area is the second circulation channel 1
4, the discharge direction of water from the second circulating water passage 14 is determined not by the flow of the circulating water but by the pressure of the circulating water.

The area of the channel is increased near the discharge port due to a pressure reservoir for changing the movement of the circulating water from the flow to the pressure. Without this, the discharge of the circulating water cannot be made fan-shaped, and the washing and dewatering tub 1 is not provided. Water cannot be sprayed evenly on clothing inside. Also, the second
The opening 15 of the discharge port of the circulating water channel 14 is
Is formed in a substantially arc shape so as to be convex toward the center of the circulating water, whereby the circulating water can also be discharged in a fan shape.

[0018]

As described above, the present invention comprises a pulsator rotatably disposed at the bottom of the washing and dewatering tub, a fluid balancer disposed at the top of the washing and dewatering tub, and a pulsator under the pulsator. A substantially cylindrical first circulating water channel formed from the pump chamber formed on the outer periphery of the side blade to the fluid balancer, and an upper portion formed in the same shape as the first circulating water channel halfway along the side wall of the washing and dewatering tub. And a second circulation channel,
The second circulation channel has the opening of the discharge port provided in the center direction and horizontal direction of the washing and dewatering tub, so that the first circulation channel or the second water channel regardless of whether the water level in the washing and dewatering tub is high or low. 2
The circulating water can be discharged from the circulating water channel, promoting the dissolution of the detergent regardless of the water level, making the detergent fully effective and spraying the circulating water evenly on the clothes in the washing and dewatering tub. Cleaning performance can be improved.

Further, the second circulating water channel is provided with an opening area of the water channel widened in front of the discharge port, and the opening of the discharge port is provided in a substantially arc shape convex toward the center of the washing and dewatering tub.
The discharge pattern from the second circulation channel can be substantially fan-shaped, and the clothes in the washing and dewatering tub can be evenly sprinkled.

[Brief description of the drawings]

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

FIG. 2A is a sectional view of a second circulation channel of the washing machine. FIG. 2B is a rear view of a second circulation channel of the washing machine. FIG. 2C is a top view of a second circulation channel of the washing machine.

FIG. 3 is a sectional view of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing and spin-drying tub 2 Pulsator 8 Fluid balancer 10 Lower blade 11 Pump room 13 First circulation channel 14 Second circulation channel 15 Opening

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D06F 39/08 D06F 17/04 D06F 37/12

Claims (2)

(57) [Claims] 1. A pulsator rotatably disposed at the bottom of a washing and dewatering tub, a fluid balancer disposed at an upper portion of the washing and dewatering tub, and a pump formed on an outer periphery of lower blades of the pulsator. A first circulating water channel having a substantially cylindrical shape formed from the chamber to the fluid balancer; and a second circulating water channel having the same shape as the first circulating water channel and having an upper portion formed partway along the side wall of the washing and dewatering tank. A washing machine, wherein the second circulating water channel has an opening of a discharge port provided in a center direction and a horizontal direction of a washing and dewatering tub. 2. The second circulating water channel has a substantially circular arc shape in which the opening area of the water channel is widened in front of the discharge port, and the opening of the discharge port is convex toward the center of the washing and dewatering tub. The washing machine as described.