JPH0716389A - Washing machine - Google Patents

Abstract

PURPOSE:To speed up the dissolution of a detergent by increasing the circulating flow rate of a washing liquid, and improve the washing power for a washing machine which washes clothes by circulating a washing liquid between a washing tank and water receiving tank. CONSTITUTION:A lower blade 8 is provided on a pulsator 2 which is rotatably provided on the bottom surface of a washing tank 3, a plurality of independent circulating water passages 7 are provided from a pump chamber 9 which is formed on the outer periphery of the lower blade 8 to the top of the washing tank 3. Then, the top of one of the circulating water passages 7 is opened toward the inside of the washing tank 3 and a detachable lint filter 10 is arranged on the opening. Then, on the top of the washing tank 3, an annular water passage 11 which communicates with the pump chamber 9 by the circulating water passages 7 is provided, and a plurality of first openings 12 which face the inside of the washing tank 3 are provided on the annular water passage 11. Then, water is poured on laundry in the washing tank 3 from the first openings 12 as circulating water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulsator type washing machine for washing clothes by circulating a washing liquid between a washing tub and a water receiving 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 this type of washing machine. For example, as disclosed in JP-A-62-304816, a waterway forming cover is provided on a part of the inner wall of the washing tub to form a waterway between the washing tub and the blades on the lower side of the pulsator. There is a pump action by which 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 poured on the laundry. According to this thing, the laundry liquid is constantly poured into the laundry,
Even if the water level at the time of washing is a little low, it can be sufficiently washed, so that it is possible to save water and detergent.

[0004]

However, in the one described in Japanese Patent Laid-Open No. 62-304816, since there is only one water channel, the water flow created by the lower blades of the pulsator is efficiently collected in the water channel. This is structurally unreasonable and has a problem that it is difficult to pour a large amount of washing liquid onto the laundry from above. In addition, the problem that the detergent dissolution speed is slow with conventional water flow and circulating water amount, occupies a considerable amount of washing time until the originally required washing concentration is reached, and the washing effect cannot be sufficiently obtained with the remaining washing time. Had.

The present invention is to solve the above-mentioned problems, and increases the circulating water amount of the washing liquid to accelerate the dissolution rate of the detergent,
The purpose is to improve detergency.

[0006]

In order to achieve the above object, the present invention provides a pulsator rotatably provided on the bottom of a washing tub with a lower blade, and a pump chamber formed on the outer periphery of the lower blade. To the upper part of the washing tub, a plurality of independent circulating water channels are provided, and at least one of the circulating water channels has an upper part open toward the inside of the washing tub and a removable filter is arranged, A first problem solving means is to provide an annular water passage communicating with the pump chamber by the plurality of circulation water passages, and to provide a plurality of first openings facing the inside of the washing tub in the annular water passage.

Further, in place of the first opening of the first problem solving means, a plurality of second openings are provided in the circulating water channel toward the inside of the washing tub. I am trying.

Further, in place of the first opening portion of the first problem solving means, a third opening portion facing inward is provided at a substantially intermediate water level position of the washing tub of the circulating water passage. It is used as a means for solving problems.

Further, a lower vane is provided on a pulsator rotatably arranged on the bottom of the washing tub, and a pressure chamber communicating with a pump chamber formed on the outer periphery of the lower vane is a washing tub on the outer periphery of the pulsator. A fourth problem solving means is provided in the bottom portion, and the pressurizing chamber is provided with a plurality of fourth openings toward the inside of the washing tub.

Further, a water inlet is provided below the washing tub in which a pulsator is rotatably arranged on the bottom surface, and the water inlet is provided.
A fifth problem-solving means is that the upper part of the washing tub is opened to the inside and communicates with a discharge port having a horizontally long nozzle shape through an external circulation pump.

[0011]

According to the first means for solving the above problems, the present invention provides:
Since the pump chamber formed on the outer periphery of the lower blade of the pulsator and the annular water passage are communicated with each other by a plurality of independent circulation water passages, a large amount of washing liquid can be circulated and the detergent can be quickly dissolved, Moreover, since the circulating water is dispersed from the annular water channel and the circulating water is poured onto the laundry, the splash of water is small, and the chances of contact between the active washing liquid and the dirt are increased, so that the washing power can be improved.

Further, according to the second means for solving the problem, a part of the circulating water can be poured from the side surface of the washing tub onto the laundry clothes, and the rest can circulate a large amount of washing liquid from below the water surface on the side surface.
Dissolution of the detergent is stopped, and since part of the circulating water circulates from below the surface of the water, it is possible to reduce foaming without involving air. From this fact, the mechanical force of the pulsator can be effectively applied to the clothing because there are few bubbles.

Further, according to the third means for solving the problems, the dissolution of the detergent is stopped by circulating a large amount of washing liquid,
Since the third opening is provided at approximately the middle water level of the washing tub, the difference in the level with the water surface is low when the water level is low, which reduces foaming, and when the water level is high, the third opening is below the water level. The rotation of the laundry can also be assisted by the discharge force from the opening of 3.

By the fourth means for solving the problem, the circulating water is not dropped on the surface of the water, so that there is no problem of foaming or water splashing, and the dissolution of the detergent can be stopped by circulating a large amount of washing liquid. You can

Further, since the washing liquid is circulated by the external circulation pump by the fifth means for solving the problems, the circulating water amount can be reduced even if the rotation speed of the pulsator is reduced or the on time of the pulsator is shortened. No, it can stop the dissolution of detergent. Further, even if the amount of washing water is reduced, the active washing liquid can be poured onto the laundry clothes on the water surface, and the washing power can be improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, the water receiving tub 1 includes a washing tub (washing / dehydrating tub) 3 in which a pulsator 2 is rotatably arranged at the bottom, and a hanging bar 4 is attached to a washing machine outer frame 5. It's hanging. A plurality of circulating water channel covers 6 are attached to the inner surface of the washing tub 3, and a plurality of independent circulating water channels 7 are provided between the circulating water channel cover 6 and the washing tub 3.
Is formed. 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. At least one of the circulating water channels 7 has an upper part opened toward the inside of the washing tub 3 and a detachable lint filter (filter) 10 is arranged. The annular water channel 11 is provided in the upper part of the washing tub 3 and communicates with the pump chamber 9 by a plurality of circulating water channels 7.
1 is provided with a plurality of first openings 12 facing the inside of the washing tub 3. The motor 13 drives the pulsator 2 via the V belt 14 and the speed reduction mechanism 15. Reference numeral 16 is a drain valve, and 17 is an electromagnetic water supply valve.

The operation of the above structure will be described. First, when the laundry is put in the washing tub 3 and the start button (not shown) is pushed, the motor 13 is rotated and the V belt 14 is pushed.
Then, the pulsator 2 is rotated for several seconds via the deceleration mechanism 15 to detect the amount of cloth, and the amount of detergent is displayed on the panel (not shown) in a pictorial representation of the cup.

Next, after the electromagnetic water supply valve 17 supplies water to the washing tub 3 up to the amount of water corresponding to the amount of cloth, the pulsator 2
Rotates to start washing. During the washing, the washing liquid in the water receiving tub 1 sucked into the lower part of the pulsator 2 is pumped to the plurality of circulating water channels 7 by the lower blade 8 of the pulsator 2, and the lint is discharged from one of the circulating water channels 7. The water is poured into the washing tub 3 through the filter 10, the other circulating water channels are communicated with the annular water channel 11 arranged at the upper part of the washing tub 3, and the first opening 12 over the laundry clothes in the washing tub 3. Is poured into. At this time, the water level a in the water receiving tub 1 is lower than the water level b in the washing tub 3, so that the washing liquid in the washing tub 3 is drained when the washing tub 3 is dehydrated (not shown). ) To the water receiving tub 1 side, and acts to balance the water level a in the water receiving tub 1 and the water level b in the washing tub 3 to circulate the washing liquid.

In this way, by providing a plurality of circulating water channels 7 communicating with the annular water channel 11, the amount of circulating water can be increased, and the washing liquid can be evenly poured from the first opening 12 of the annular water channel 11. As a result, the dissolution speed of the detergent can be stopped and the washing power can be improved, and since the washing liquid is poured onto the laundry clothes, water can be saved.

Next, a second embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, a plurality of circulation channel covers 18 forming the circulation channel 7 are attached to the inner surface of the washing tub 3,
Instead of the first opening of the first embodiment, a plurality of second openings 19 are provided from the lower part to the upper part toward the inside of the washing tub 3.

To explain the operation of the above structure, the washing liquid in the water receiving tub 1 sucked into the lower part of the pulsator 2 during washing is pumped to the circulating water passage 7 by the lower blade 8.
While being poured into the washing tub 3 through the lint filter 10, the other circulating water passage 7 is circulated through the plurality of second openings 19 of the circulating water passage cover 18 provided on the side surface of the washing tub 3. That is, the circulating water is poured onto the water surface or the clothes from the second opening portion 19 above the water surface, and the circulating water is supplied into the water from the second opening portion 19 in the water.
At this time, the water level a in the water receiving tub 1 is the water level b in the washing tub 3.
Since the washing liquid in the washing tub 3 becomes lower than the washing tub 3
It moves to the water receiving tub 1 side through a water draining hole (not shown) at the time of dehydration, and acts to balance the water level a in the water receiving tub 1 and the water level b in the washing tub 3, Circulate the washing liquid.

Since the amount of circulating water can be increased in this way, the solubility of the detergent can be stopped and the cleaning power can be improved. Furthermore, since the second opening 19 for discharging the circulating water is divided into the washing liquid and above the water surface, less foaming occurs when pouring all the circulating water from above the water surface onto the clothes, Moreover, it is possible to save water when the amount of laundry is low and the water level is low.

Next, a third embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, a plurality of circulating water channel covers 20 forming the circulating water channel 7 are attached to the inner surface of the washing tub 3,
Instead of the first opening of the first embodiment, a third opening 21 directed inward is provided at approximately the intermediate water level of the washing tub 3.

The operation of the above configuration will be described with reference to FIG.
Indicates a high water level, and the washing liquid in the water receiving tub 1 sucked into the lower part of the pulsator 2 during washing is the lower blade 8
Is pumped to the circulating water passage 7 by the lint filter 10 and poured into the washing tub 3 through the lint filter 10, and the other circulating water passage 7
Is discharged into the washing liquid from the third opening 21 provided in the circulating water channel cover 20 arranged on the side surface of the washing tub 3. At this time, since the water level a in the water receiving tub 1 is lower than the water level b in the washing tub 3, the washing liquid in the washing tub 3 has a hole for draining water when the washing tub 3 is dehydrated (not shown). To move to the water receiving tub 1 side through the action to balance the water level a in the water receiving tub 1 and the water level b in the washing tub 3 to circulate the washing liquid. When the water level is low, the washing liquid is poured on the clothes or the water surface.

As a result, the amount of circulating water is increased, the dissolution speed of the detergent is no longer increased, and the cleaning power can be improved. In addition, when the water level is low, the washing liquid is poured on the surface of the water, but since the head is small, foaming can be suppressed to a small level, and when washing a small amount, the washing water is poured on the clothes so that water is saved. Is also possible.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, a pressurizing chamber 23 is provided at the bottom of the washing tub 22, and the pressurizing chamber 23 communicates with the pump chamber 9 formed on the outer periphery of the lower blade 8 of the pulsator 2, It is provided on the outer circumference of the sweater 2. A plurality of fourth openings 24 are provided in the pressurizing chamber 23 toward the inside of the washing tub 22.

The operation of the above structure will be described. The washing liquid in the water receiving tub 1 sucked into the lower part of the pulsator 2 during washing is pumped to the circulating water passage 7 by the lower blade 8.
It is poured into the washing tub 22 through the lint filter 10. At the same time, a pressurizing chamber 23 provided at the bottom of the washing tub 22
Is discharged into the washing liquid through the plurality of fourth openings 24. At this time, the water level a in the water receiving tub 1 is lower than the water level b in the washing tub 22, so that the washing liquid in the washing tub 22 is a hole for draining water when the washing tub 22 is dehydrated (not shown). The water moves to the water receiving tub 1 side through the water and acts to balance the water level a in the water receiving tub 1 and the water level b in the washing tub 22 to circulate the washing liquid.

As a result, the amount of circulating water increases, the dissolution speed of the detergent becomes longer, and the cleaning power can be improved. On the other hand, since the circulating water is discharged into water, there is no problem of foaming. In addition,
No water can be saved because circulating water is not poured on the clothes.

Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, in the washing tub 25, a pulsator 26 is rotatably arranged on the bottom surface, and a water inlet 27 is provided in the water receiving tub 1 below the washing tub 25.
And the discharge port 28 provided at the upper part of the washing tub 25 are communicated with each other via an external circulation pump 29. Outlet 2
No. 8 opens toward the inside of the washing tub 25, and as shown in FIG. 5 (b), it has a horizontally long nozzle shape so that water can be sprayed in a fan shape. Further, the external circulation pump 29 is shown in FIG.
As shown in, the mounting plate 3 placed at the bottom of the water receiving tank 1
The discharge port 28 is arranged in the upper gap between the water receiving tub 1 and the washing tub 25.

The operation of the above structure will be described. The washing liquid in the water receiving tub 1 is absorbed by the water suction port 27 and the external circulation pump 2.
9. Water is sprayed into the washing tub 25 in a fan shape through the discharge port 28. At this time, since the water level a in the water receiving tub 1 is lower than the water level b in the washing tub 25, the washing liquid in the washing tub 25 is a hole for draining water when the washing tub 25 is dehydrated (not shown). The water moves to the water receiving tub 1 side through the water and acts to balance the water level a in the water receiving tub 1 and the water level b in the washing tub 25 to circulate the washing liquid.

As a result, the amount of circulating water of the washing liquid is increased, the dissolution speed of the detergent is reduced, and the washing power can be improved. Further, since the circulating water is poured onto the laundry clothes, not only can the water be saved, but the amount of the circulating water can be controlled regardless of the pulsator 26. Therefore, when the water is saved, the rotation of the pulsator 26 is weakened and the laundry is washed without damaging it. it can.

[0037]

As is apparent from the above embodiments, according to the present invention, a pulsator rotatably disposed on the bottom of a washing tub is provided with a lower blade, and a pump chamber formed on the outer periphery of the lower blade. To an upper part of the washing tub, a plurality of independent circulating water channels are provided, and at least one of the plurality of circulating water channels has an upper part open toward the inside of the washing tub and a removable filter is arranged. An annular water passage communicating with the pump chamber by the circulating water passage is provided in the upper part, and a plurality of first openings facing the inside of the washing tub are provided in the annular water passage. Therefore, the pump formed on the outer periphery of the lower blade of the pulsator. Since a plurality of independent circulating water channels communicate between the room and the circular water channel, a large amount of washing liquid can be circulated, the detergent can be quickly dissolved, and the circulating water can be dispersed from the annular water channel to wash clothes. Pouring on , Scattering of water is small and further,
The chances of contact between the active washing liquid and dirt are increased, and the washing power can be improved.

Further, in place of the first opening, a plurality of second openings are provided in the circulating water channel toward the inside of the washing tub, so that a part of the circulating water flows from the side surface of the washing tub onto the laundry. A large amount of washing liquid can be circulated from below the water surface on the side, the dissolution of the detergent can be stopped, and part of the circulating water circulates from below the water surface, so there is no air entrapment and less foaming. Even if the detergent has a lot of foaming, the cover portion on the upper part of the water receiving tank will not be stained with foam (whitening residue of the detergent) and the start-up at the time of dehydration will not be disturbed. From this,
Since there are few bubbles, the mechanical force of the pulsator can be effectively applied to the clothing.

Further, instead of the above-mentioned first opening, a third opening inwardly is provided at a substantially intermediate water level position of the washing tub of the circulating water channel, so that the circulating water is moved from an approximately intermediate water level position of the washing tub. Since it is poured into the washing tub, not only is the detergent dissolved quickly to improve the washing power, but the circulating water is poured into the water at a high water level where the distance to the upper part of the water receiving tub is short, so there is no foaming due to water injection. Also, when the water level is low, not only is it possible to save water because it can supply active washing liquid to the laundry,
Since the head of water injection is small and the distance to the top of the water receiving tank is long, the cover on the top of the water receiving tank is white (dry residue of detergent).
It doesn't get dirty.

A lower wing is provided on a pulsator rotatably arranged on the bottom of the washing tub, and a pressure chamber communicating with a pump chamber formed on the outer circumference of the lower wing is provided with a pressurizing chamber on the outer circumference of the pulsator. Since a plurality of fourth openings are provided at the bottom and the pressurizing chamber is directed toward the inside of the washing tub, there is no problem of foaming even when discharged from the bottom of the washing tub into the washing liquid. By circulating the washing liquid, the detergent can be quickly dissolved and the washing power can be improved.

Further, a water inlet is provided below the washing tub in which a pulsator is rotatably arranged on the bottom surface, and the water inlet is
Since the discharge port having an oblong nozzle shape and opening inward at the upper part of the washing tub is communicated with the external circulation pump, the washing liquid can be circulated by the external circulation pump. By controlling the mechanical force of the pulsator so that the water flow is suitable for the above, it is possible to change the contribution ratio of the cleaning force by the mechanical force and the chemical cleaning force by the detergent.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of a washing machine according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional view of a washing machine according to a third embodiment of the present invention.

FIG. 4 is a vertical sectional view of a washing machine according to a fourth embodiment of the present invention.

FIG. 5 (a) is a vertical cross-sectional view of a washing machine according to a fifth embodiment of the present invention. FIG.

[Explanation of symbols]

 2 Pulsator 3 Washing tank 7 Circulating water channel 8 Lower blade 9 Pump room 10 Lint filter (filter) 11 Annular water channel 12 First opening

Claims (5)

[Claims] 1. A pulsator rotatably disposed on the bottom of a washing tub is provided with a lower blade, and a plurality of independent circulating water channels are provided from a pump chamber formed on the outer periphery of the lower blade to an upper portion of the washing tub. At least one of the circulating water channels has an upper part open toward the inside of the washing tub and a removable filter is disposed, and an annular water channel communicating with the pump chamber by the plurality of circulating water channels is provided on the upper part of the washing tub. A washing machine in which a plurality of first openings facing the inside of the washing tub are provided in the annular water passage. 2. A plurality of second openings are provided in the circulating water channel instead of the first openings toward the inside of the washing tub.
The described washing machine. 3. The washing machine according to claim 1, wherein instead of the first opening, a third opening facing inward is provided at a substantially intermediate water level position of the washing tub of the circulating water channel. 4. A washing tub on the outer periphery of the pulsator, wherein a lower blade is provided on a pulsator rotatably arranged on the bottom of the washing tub, and a pressure chamber communicating with a pump chamber formed on the outer periphery of the lower blade is provided. A washing machine provided at a bottom part, wherein a plurality of fourth openings are provided in the pressurizing chamber toward the inside of the washing tub. 5. A water suction port is provided below a washing tub in which a pulsator is rotatably disposed on the bottom surface, and the water suction port and an upper portion of the washing tub are open toward the inside and have a horizontally elongated nozzle shape. A washing machine that communicates with the outlet via an external circulation pump.