JPH078679A - Fully automatic washing machine - Google Patents

Abstract

(57) [Summary] [Purpose] In a washing machine for washing clothes by sprinkling washing liquid onto the clothes from the upper part of the washing / dehydrating tub, an extra space between the water receiving tub and the washing / dehydrating tub generated by circulation of the washing liquid. The purpose is to suppress the foaming. [Structure] A circulating water passage 7 is provided from the pump chamber provided on the outer circumference of the lower blade of the pulsator to the upper portion of the washing / dehydrating tank 3.
A sprinkling nozzle 11 is provided in an opening 10 facing the inside of the washing / dehydrating tub 3 above the circulating water passage 7. A branch water channel 20 for branching a part of the washing liquid circulating from the circulation water channel 7 is provided,
The nozzle opening 21 of the branch water passage 20 is made to face between the water receiving tank 1 and the washing / dehydrating tank 3, and the washing liquid is sprinkled on the foam between the water receiving tank 1 and the washing / dehydrating tank 3. Impede growth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine for washing clothes by sprinkling washing liquid onto the clothes from above the washing / dehydrating tub.

[0002]

2. Description of the Related Art In recent years, protection of the global environment has become a very important issue. Resource saving is also an important theme among them, and in the washing machine, water saving and detergent saving are strongly desired.

Conventionally, various methods have been proposed for saving water and detergent in a fully automatic washing machine. For example, as disclosed in JP-A-1-146584, a water channel forming cover is provided on a part of the inner wall of the washing tub to form a water channel between the water tub and the lower wing of the pulsator. In some pumps, the washing liquid on the lower side of the washing tub is guided to the upper part of the washing tub through the water channel, and the washing liquid is discharged from the plurality of discharge holes of the annular ring and poured onto the laundry. In this one,
Since the washing liquid is constantly poured into the laundry, it can be sufficiently washed even if the water level at the time of washing is a little low, so that it is possible to save water and detergent, which is extremely useful.

[0004]

However, in such a conventional fully automatic washing machine, when the circulation amount of the washing liquid is increased in order to enhance the effects of water saving and detergent, the flow of the washing liquid in the water receiving tub is increased. It becomes violent and the bubbles in the water receiving tank become violent. If the amount of foaming increases, bubbles rise while growing between the water receiving tank and the washing / dehydrating tank, and moreover, it may overflow from the upper part of the water receiving tank, so increase the circulation amount easily. I couldn't. Even if it does not overflow from the upper part, if there are many bubbles generated between the water receiving tub and the washing tub, the load at the time of dehydration due to the bubbles will increase, the rinse efficiency will decrease due to the increase in the residual amount of detergent, and mold due to soap residue will adhere. There was a problem that adverse effects such as the occurrence of

The present invention has been made to solve the above problems, and an object of the present invention is to prevent the foaming between the water receiving tank and the washing / dehydrating tank to suppress excessive foaming and to eliminate the harmful effects of foaming.

[0006]

In order to achieve the above object, the present invention rotatably supports a water receiving tank, a washing / dehydrating tank disposed in the water receiving tank, and a bottom surface of the washing / dewatering tank. The pulsator provided, the pump chamber formed on the outer periphery of the lower blade of the pulsator, the circulating water passage extending from the pump chamber to the upper portion of the washing / dehydrating tank, and the washing / dehydrating tank above the circulating water passage. A nozzle provided at an opening facing the inside, and a branch water channel for branching a part of the circulating washing liquid is provided in the circulation water channel, and a nozzle port of the branch water channel is provided between the water receiving tank and the washing / dehydrating tank. It is a means to solve the problem.

[0007]

According to the present invention, a part of the washing liquid circulating in the washing / dehydrating tub is diverted from the upper part of the washing / dehydrating tub and the water receiving tub is provided from the nozzle opening of the upper part of the washing / dehydrating tub by the above means for solving the problems. By pouring the washing liquid over the foam by pouring it into the washing / dehydrating tub, it is possible to prevent the growth of the foam and suppress excessive foaming, prevent the foam from overflowing, and increase the circulation amount of the washing liquid. The harmful effects can be eliminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a water receiving tub 1 includes a washing / dehydrating tub (hereinafter referred to as a washing tub) 3 having a pulsator 2 rotatably arranged at the bottom thereof, and a hanging rod 4 is used to wash the washing machine. It is suspended on the outer frame 5. A plurality of circulating water passage covers 6 are attached to the inner surface of the washing tub 3 to form a plurality of independent circulating water passages 7 with the washing tub 3. A lower blade 8 is integrally provided on the back surface of the pulsator 2, and a pump chamber 9 formed on the outer periphery of the lower blade 8 communicates with a plurality of circulating water channels 7. The upper portions of the plurality of circulating water channels 7 are opened toward the inside of the washing tub 3 to form openings 10, and the water spray nozzles 11 (nozzles) are provided in the openings 10. The motor 12 is disposed below the water receiving tub 1, and drives the pulsator 2 via the V-belt 13 and the speed reduction mechanism 14 during washing and spins the washing tub 3 during dehydration. The drain valve 15 controls drainage of the washing liquid, and is arranged below the water receiving tank 1. Reference numeral 16 is a water supply valve for controlling water supply. Reference numeral 17 is a lid provided on the upper side of the washing machine outer frame 5, and 18 is a control device for controlling the motor 12, the drain valve 15, the water supply valve 16, and the like. 1
Reference numeral 9 denotes a fluid balancer for reducing vibration of the washing tub 3 at the time of dehydration, which is provided on the upper part of the washing tub 3.

As shown in FIGS. 2 and 3, the circulating water channel 7 is provided with a branching water channel 20 so that a part of the washing liquid circulating in the circulating water channel 7 is branched and the nozzle port 21 of the branching water channel 20 is provided. A nozzle 22 for defoaming and spraying water is formed so as to face the water receiving tub 1 and the washing tub 3.

The operation of the above structure will be described. First, as shown in FIG. 1, when the laundry 23 is put into the washing tub 3 and the start switch (not shown) is pressed, the controller 18 supplies water. The valve 16 is controlled to supply water to a predetermined water level, and the washing process is started. When the washing process is started, the motor 12 is controlled by the control device 18 to rotate right, pause, rotate left, and pause so as to form a predetermined washing water flow. The rotation of the controlled motor 12 is controlled by the V-belt 13 and the speed reduction mechanism 1.
It is transmitted to the pulsator 2 via 4. Therefore,
The pulsator 2 and the lower blade 8 rotate according to the rotation of the motor 12, the laundry 23 and the washing liquid in the washing tub 3 are agitated, and the laundry 23 is washed. On the other hand, the washing liquid between the lower blade 8 and the water receiving tub 1 is pushed outward by the centrifugal force by the rotation of the lower blade 8, passes through the circulating water passage 7, and is sprayed from the sprinkling nozzle 11 into the washing tub 3. In addition, it is poured intermittently according to the rotation of the motor 12.

New washing liquid is supplied from below the central portion of the lower blade 8 to the traces of the washing liquid pushed out into the circulating water channel 7 by the lower blade 8. That is, the water receiving tub 1 and the washing tub 3
The washing liquid between the water receiving tub 1 and the washing tub 3 becomes lower than the washing liquid level b in the washing tub 3. However, a hole for dehydration of the washing tub 3 (not shown)
Also, since the washing liquid flows into the water receiving tub 1 through the gap between the washing tub 3 and the pulsator 2, the difference in liquid level is balanced and constant at a certain value. Due to the fluctuation of the liquid level and the flow of the washing liquid, bubbles 24 are generated between the water receiving tub 1 and the washing tub 3.

Next, the operation in the vicinity of the defoaming / sprinkling nozzle 22 will be described. First, the washing liquid pushed up by the rotation of the lower blade 8 of the pulsator 2 climbs up through the circulating water passage 7 and is divided into the water spray nozzle 11 and the branch water passage 20.
The washing liquid directed to the sprinkling nozzle 11 is sprinkled in the washing tub 3. The washing liquid branched to the branch water channel 20 flows into the defoaming sprinkler nozzle 22, and is sprinkled from the nozzle port 21 between the water receiving tub 1 and the washing tub 3 to form the water receiving tub 1 and the washing tub 3.
Pour over the foam 24 between. Here, the size and shape of the branch water passage 20 and the nozzle port 21 are determined so that the amount of circulating water flowing through the branch water passage 20 is smaller than the amount of circulating water flowing toward the sprinkling nozzle 11. The washing liquid sprinkled from the nozzle port 21 can prevent the growth of bubbles between the water receiving tub 1 and the washing tub 3 and prevent the bubbles 24 from overflowing from the upper part of the water receiving tub 1.

In the above embodiment, the sprinkler nozzle 11 is provided in the opening 10 facing the inside of the washing tub 4 above the circulating water passage 7.
Although the structure in which the filter is provided has been described, it is needless to say that the effect of preventing the growth of bubbles is the same even if the filter for collecting lint is provided in the opening 10.
Needless to say, a variation of the configuration in which there are a plurality of circulating water channels, some of which are provided with a filter and the rest of which is provided with a water spray nozzle, is the same as described above.

[0015]

As is apparent from the above embodiments, according to the present invention, the water receiving tank, the washing / dehydrating tank disposed in the water receiving tank, and the bottom surface of the washing / dehydrating tank are rotatable. The pulsator provided, the pump chamber formed on the outer periphery of the lower blade of the pulsator, the circulating water passage extending from the pump chamber to the upper portion of the washing / dehydrating tank, and the washing / dehydrating tank above the circulating water passage. With a nozzle provided in the opening facing the inside,
The circulation water passage is provided with a branch water passage for branching a part of the circulating washing liquid, and the nozzle opening of the branch water passage is faced between the water receiving tank and the washing / dehydrating tank. It is possible to suppress the excessive foaming, reduce the foaming load during dehydration, improve the rinsing efficiency, and prevent the harmful effects of foaming such as the prevention of soap residue adhesion. Further, the amount of circulating water can be further increased, and the cleaning rate can be further improved.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of a defoaming / sprinkling nozzle section of the fully automatic washing machine.

FIG. 3 is a front view of a nozzle for defoaming and watering of the fully automatic washing machine.

[Explanation of symbols]

 1 Water Receiving Tank 2 Pulsator 3 Washing / Dehydrating Tank 7 Circulating Water Channel 8 Lower Blade 9 Pump Room 10 Opening 11 Sprinkling Nozzle (Nozzle) 20 Branching Water Channel 21 Nozzle Mouth

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Fujii 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A water receiving tub, a washing / dehydrating tub disposed in the water receiving tub, a pulsator rotatably disposed on the bottom of the washing / dehydrating tub, and lower blades of the pulsator. A pump chamber formed on the outer circumference, a circulating water channel provided from the pump chamber to an upper part of the washing / dehydrating tank, and a nozzle provided at an opening facing the inside of the washing / dehydrating tank above the circulating water channel, A fully automatic washing machine in which a branch water channel for branching a part of the circulating washing liquid is provided in the water channel, and a nozzle port of the branch water channel is faced between a water receiving tank and a washing / dehydrating tank.