JP2003079997A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economize an important water resource by carrying out circulating cleaning by low level washing water, and improve cleaning performance by washing by high concentration washing water in a washing machine performing washing and rinsing by circulating washing water. SOLUTION: A washing and spin-drying tub 2 storing washing is rotatably stored in a water receiving tub 1. The washing and spin-drying tub 2 is rotationally driven with a motor 8. A pump chamber 3 is formed inside the water receiving tub 1. By rotating the washing and spin-drying tub 2, washing water between the outside of the washing and spin-drying tub 2 and the water receiving tub 1 is collected in the pump chamber 3, and pumped up through a circulation route 4 connected to the pump chamber 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine that circulates washing water to perform washing and rinsing.

[0002]

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

As shown in FIG. 10, the water receiving tub 17 includes a washing / dehydrating tub 18 rotatably arranged therein, and the hanging rod 1
It is hung on the outer frame 20 of the washing machine by means of 9. Motor 21
Drives the washing / dehydrating tub 18 through the speed reducing mechanism 22. The water supply valve 23 supplies water into the washing / dehydrating tub 18, the water level detecting means 24 detects the water level in the water receiving tub 17, and the drain valve 25 detects the washing water in the water receiving tub 17. It drains water.

The controller 26 includes a motor 21 and a water supply valve 2
3. By controlling the drainage valve 25, etc., the steps of washing, rinsing and dehydrating are sequentially controlled.

The operation of the above structure will be described. When laundry and detergent are put into the washing / dehydrating tub 18 and the operation is started, the water supply valve 23 is operated by the control device 26 so that water is put into the washing / dehydrating tub 18. Supply water. When the water level detection means 24 detects a predetermined water level, a signal is sent to the control device 26 and the operation of the water supply valve 23 is stopped. Then, the motor 21 is operated by the control device 26 to rotate the washing / dehydrating tub 18.

As shown in FIG. 11, the centrifugal force generated by the rotation of the washing / dehydrating tub 18 causes the water surface of the washing water in the water receiving tub 17 to have a mortar shape, so that the washing / dehydrating tub 18 and the water receiving tub 17 are separated from each other. The water surface between the two rises and the central part falls. When the rotation speed of the washing / dehydrating tub 18 is increased, the centrifugal force is increased, and accordingly, the water surface between the outside of the washing / dehydrating tub 18 and the water receiving tub 17 is further raised. And
Finally, the surface of the washing water exceeds the height of the upper end of the washing / dehydrating tub 18 and is sprinkled and circulated inside the washing / dehydrating tub 18.

As described above, by rotating the washing / dehydrating tub 18 at a predetermined number of revolutions with the predetermined amount of washing water stored in the water receiving tub 17, the washing water can be sprinkled and circulated. . Then, by circulating the washing water, it is possible to accelerate the dissolution of the introduced detergent, reach the saturation of dissolution at an early stage of the washing process, and the detergent component can effectively act on the dirt of the laundry. Therefore, the washing performance of the laundry can be improved. Further, in this configuration, since the mechanical force is not directly applied to the laundry even when the washing water is circulated, the laundry is not damaged.

[0008]

However, in such a conventional structure, the centrifugal force generated by the rotation of the washing / dehydrating tank 18 causes the surface of the washing water in the water receiving tank 17 to have a mortar-like shape. In order to spray water over the height of the upper end of the washing / dehydrating tub 18, the amount of water filling at least the space between the washing / dehydrating tub 18 and the water receiving tub 17 and the washing / dehydrating tub 18 should be The total amount of water existing in the central part is required, and at a water level below that, water cannot be sprinkled even if the rotation speed is increased.

That is, in order to spray water over the height of the upper end of the washing / dehydrating tub 18, the water level of the washing water must be higher than a certain level, and naturally there is a limit to saving water resources. was there. Furthermore, when a certain amount of detergent is added to a small amount of washing water, the washing water has a high concentration and the detergency can be increased, but there is a limit to the saving of the amount of water, which is also a limitation.

Further, since such a circulation cleaning only circulates the washing water directly, lint such as thread waste contained in the washing water cannot be recovered.

The present invention solves the above-mentioned conventional problems. By circulating washing with low-level washing water, valuable water resources are saved, and further washing performance is improved by washing with high-concentration washing water. The purpose is to improve.

[0012]

In order to achieve the above object, the present invention rotatably accommodates a washing / dehydrating tub for containing laundry in a water receiving tub, and the washing / dehydrating tub is rotated by a driving means. It is configured to drive, and a pump chamber is formed on the inner surface of the water receiving tub, and by rotating the washing / dehydrating tub, the washing water between the outside of the washing / dehydrating tub and the water receiving tub is collected in the pump chamber, The water is pumped upward through the connected circulation path.

As a result, it is possible to circulate and wash with low-level washing water, save valuable water resources, and improve washing performance by washing with high-concentration washing water.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a washing and dewatering tub for containing laundry, a water receiving tub for rotatably accommodating the washing and dewatering tub, and the washing and dewatering. Drive means for rotating and driving the water tub, a pump chamber is formed on the inner surface of the water receiving tub, and the washing water between the outside of the washing and dehydrating tub and the water receiving tub is rotated by the rotation of the washing and dehydrating tub. It is configured to collect in the pump chamber and pump upward through a circulation path connected to the pump chamber.When the washing / dehydrating tub is driven to rotate, the washing water is concentrated in the pump chamber on the inner surface of the water receiving tub. By doing so, the water pressure becomes high, and even when the water level is low, the washing water can be circulated and washed, saving valuable water resources and improving washing performance by washing with high-concentration washing water. You can

According to a second aspect of the present invention, in the first aspect of the present invention, a shower nozzle is provided at the tip of the circulation path, and water is sprayed from above the shower nozzle into the washing / dehydrating tub. With this configuration, it is possible to efficiently spray high-concentration washing water onto laundry and improve washing performance.

According to a third aspect of the present invention, in the invention according to the first aspect, a lint filter is arranged at the tip of the circulation path, and water is discharged from the lint filter into the washing and dehydrating tank. Therefore, the lint contained in the wash water can be recovered in the circulation cleaning in which the washing / dehydrating tank is rotated.

The invention according to claim 4 is the invention according to claim 1 or 2, wherein a lint filter is connected in the middle of the circulation path and a shower nozzle is arranged at the tip of the circulation path. It is configured to sprinkle water from above into the washing and dehydrating tub,
In circulation cleaning in which the washing / dehydrating tub is rotated, lint contained in the washing water can be recovered, and high-concentration washing water can be efficiently sprayed on the laundry, so that the washing performance can be improved. .

According to a fifth aspect of the present invention, in the first aspect of the present invention, a device for changing the property of the wash water is connected in the middle of the circulation path.
The washing water can be further activated and the washing performance can be further improved.

The invention according to claim 6 is the above-mentioned claim 1.
In the invention described in 5, the rotation speed of the washing / dehydrating tub is changed according to the water level of the washing water in the water receiving tub, and constant washing water can be circulated even if the water level is different. Even when the water level is low, the circulation amount does not decrease too much, and the detergency can be improved stably, and even when the water level is high, the circulation amount does not increase too much and foaming can be suppressed. At the same time, it is possible to suppress the consumption of extra power.

The invention according to claim 7 is the above-mentioned claim 1.
In the invention as set forth in 6, the pump chamber has a direction so that water is pumped by rotating the washing / dehydrating tub only in one of the right and left directions, and the washing / dehydrating tub also rotates in the other direction. The lint such as thread waste adhering to the inlet of the pump chamber can be automatically removed by the rotating water flow in the other direction, and the accumulated lint can be prevented from accumulating. .

According to an eighth aspect of the present invention, in the invention according to the seventh aspect, the washing / dehydrating tub is constructed so that water is pumped by rotating the washing / dehydrating tub only in either one of the right and left directions. When the dewatering tub rotates in the other direction, the rotation of the washing / dehydrating tub causes the washing water between the outside of the washing / dehydrating tub and the receiving tub to rise, and sprinkles water into the washing / dehydrating tub from above. It is configured according to the rotation direction, and the current system that circulates through the circulation path when the water level is low,
When the water level is high to medium, the water level of the washing water exceeds the height of the upper end of the washing / dehydrating tub and the conventional method of spraying water into the washing / dehydrating tub can be switched. As a result, general clothing circulates high-concentration washing water at a low water level through the circulation path, and large clothing such as blankets goes over the height of the upper edge of the washing / dehydrating tub into the washing / dehydrating tub. It can be switched to spray water.

According to a ninth aspect of the present invention, in the invention according to the seventh aspect, the washing / dewatering tub is constructed so that water is pumped by rotating the washing / dehydrating tub only in one of the right and left directions.
The washing and dewatering tub is configured to rotate in the other direction at the time of dehydration, and even when high-concentration wash water remains after washing, the circulation path at the time of dehydration It is possible to prevent the washing water from being sprinkled on the laundry.

The invention according to claim 10 is the above-mentioned claim 7.
In the invention described in, the washing and dewatering tub is configured to pump water by rotating in either one of right or left rotation,
The washing and dewatering tub is configured to rotate in the same direction even during dewatering, and during the final dewatering after rinsing, the air collected in the pump chamber is blown through the circulation path to improve dewatering efficiency. Can be increased.

[0024]

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

(Embodiment 1) As shown in FIG. 1, the water receiving tank 1 has a pump chamber 3 which is open inward at the bottom of the inner surface thereof, and the pump chamber 3 is provided above the water receiving tank 1. The circulation path 4 communicating therewith is connected, and a shower nozzle 5 is arranged at the tip of the circulation path 4.

The washing / dehydrating tub 2 is rotatably arranged in the water receiving tub 1, and the water receiving tub 1 is suspended by the hanging rod 6 on the outer frame 7 of the washing machine. The motor (driving means) 8 is a reduction mechanism 9
The washing and dehydrating tub 2 is rotationally driven via the. The water supply valve 10 supplies water into the washing / dehydrating tub 2, the water level detection means 11 detects the water level in the water receiving tub 1, and the drain valve 12 wash water in the water receiving tub 1. To drain the water.

The controller 13 includes a motor 8, a water supply valve 10,
The drainage valve 12 and the like are controlled to sequentially control the washing, rinsing, and dehydrating processes.

The operation of the above structure will be described. When laundry and detergent are put into the washing / dehydrating tub 2 and the operation is started, the water supply valve 10 is operated by the control device 13 to cause water in the washing / dehydrating tub 2. Water is supplied. When the water level detection means 11 detects a predetermined water level, it sends a signal to the control means 13 and the water supply valve 1
0 operation is stopped. After that, the controller 8 drives the motor 8 to rotate the washing / dehydrating tub 2.

As shown in FIG. 2, due to the rotational force generated by the rotation of the washing / dehydrating tub 2, the washing water in the water receiving tub 1 is concentrated in the pump chamber 3 and the water pressure in the pump chamber 3 rises.
When the rotation speed of the washing and dehydrating tub 2 is increased, the rotating force is increased, and the water pressure in the pump chamber 3 is further increased accordingly.
The washing water rises through the circulation path 4, and finally is sprayed from the shower nozzle 5 at the tip of the circulation path 4 into the washing / dehydrating tub 2 and circulated.

As described above, by rotating the washing / dehydrating tub 2 at a predetermined number of revolutions with a small amount of washing water stored in the water receiving tub 1, the washing water can be sprinkled and circulated in the laundry. it can. By sprinkling and circulating the wash water, it is possible to accelerate the dissolution of the introduced detergent, reach the solution saturation at the early stage of the washing process, and make the detergent components act effectively on the dirt of the laundry. Therefore, the washing performance of the laundry can be improved.

Further, in this structure, since the mechanical force is not directly applied to the laundry even when the washing water is circulated, the laundry is not damaged. Furthermore, since the washing water can be circulated at a low water level, valuable water resources can be saved, and washing with a high concentration of washing water can be performed, so that the washing performance can be improved.

The rinsing water may be circulated not only for washing but also for rinsing. This can save valuable water resources.

(Embodiment 2) As shown in FIG. 3, one end of the circulation path 4a is connected to the pump chamber 3 and communicates above the water receiving tank 1. The lint filter 14 is provided at the tip of the circulation path 4a. Is disposed and water is discharged from the lint filter 14 into the washing / dehydrating tank 2. The other structure is the same as that of the first embodiment.

The operation of the above structure will be described. When the washing / dehydrating tub 2 is rotated, the washing water in the water receiving tub 1 is concentrated in the pump chamber 3 by the rotational force generated by the rotation of the washing / dehydrating tub 2, and the pump is pumped. The water pressure in the chamber 3 rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3 is further increased, the washing water is increased through the circulation path 4a, and finally the tip of the circulation path 4a. The water is discharged from the lint filter 14 into the washing / dehydrating tank 2 and circulated.

As described above, the washing / dewatering tub 2 is rotated at a predetermined number of revolutions in a state where the washing water is accumulated in the water receiving tub 1 in a predetermined amount, so that the washing water is discharged and circulated through the lint filter 14. The lint can be recovered.

(Third Embodiment) As shown in FIG. 4, one end of the circulation path 4b is connected to the pump chamber 3 and communicates above the water receiving tank 1. The lint filter 15 is provided in the middle of the circulation path 4b. In addition, a shower nozzle 5 is provided at the tip of the circulation path 4b, and water is sprayed from above the shower nozzle 5 into the washing / dehydrating tub 2 from above. The other structure is the same as that of the first embodiment.

The operation of the above structure will be described. When the washing / dehydrating tub 2 is rotated, the washing water in the water receiving tub 1 is concentrated in the pump chamber 3 by the rotational force generated by the rotation of the washing / dehydrating tub 2, and the pump is pumped. The water pressure in the chamber 3 rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3 is further increased, the washing water is increased through the circulation path 4b, and finally in the middle of the circulation path 4b. After passing through the lint filter 15 connected to, the water is sprayed from the shower nozzle 5 at the tip of the circulation path 4b into the washing / dehydrating tank 2 and circulated.

As described above, the washing / dehydrating tub 2 is rotated at a predetermined number of revolutions with the predetermined amount of washing water stored in the water receiving tub 1, so that the washing water can pass through the lint filter 14. Yes, lint can be collected.

Furthermore, since the laundry can be sprinkled on the laundry while circulating the washing water, it is possible to accelerate the dissolution of the introduced detergent, and to reach the solution saturation at an early stage of the washing process, so that the detergent components can be washed. Since it can effectively act on dirt, the washing performance of the laundry can be improved.

(Embodiment 4) As shown in FIG. 5, one end of the circulation path 4c is connected to the pump chamber 3 and communicates above the water receiving tank 1. A heater 16 is provided in the middle of the circulation path 4c. In addition to being connected, a shower nozzle 5 is arranged at the tip of the circulation path 4c, and water is sprayed from above the shower nozzle 5 into the washing / dehydrating tub 2 from above. The other structure is the same as that of the first embodiment.

The operation of the above structure will be described. When the washing / dehydrating tub 2 is rotated, the washing water in the water receiving tub 1 is concentrated in the pump chamber 3 by the rotational force generated by the rotation of the washing / dehydrating tub 2, and the pump is pumped. The water pressure in the chamber 3 rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3 is further increased, the washing water is increased through the circulation path 4c, and finally in the middle of the circulation path 4c. Through the heater 16 connected to the circulation path 4c
Water is circulated from the shower nozzle 5 at the tip of the inside of the washing / dehydrating tub 2.

As described above, the washing / dehydrating tub 2 is rotated at a predetermined number of revolutions with the predetermined amount of the washing water being accumulated in the water receiving tub 1, so that the washing water can be passed through the heater 16. , The temperature of washing water can be raised. This makes it possible to sprinkle and circulate the wash water of which temperature has risen in the laundry, so that it is possible to further promote the dissolution of the introduced detergent, and to reach the saturation of dissolution at an early stage of the washing process, so that the detergent components can be washed. Since it can effectively act on the stains, the washing performance of the laundry can be further enhanced.

Although the heater 16 is connected in the middle of the circulation path 4 in this embodiment, any device such as an electrolyzed water producing device or a disinfectant introducing device may be used as long as it changes the property of water.

(Embodiment 5) The controller 13 shown in FIG.
Depending on the water level of the washing water in the water receiving tank 1, the washing and dewatering tank 2
The rotation speed of is changed. The other structure is the same as that of the first embodiment.

The operation of the above structure will be described. When the water level of the washing water in the water receiving tub 1 is high, the rotation speed of the washing / dehydrating tub 2 is lowered, and when the water level of the washing water is high, the washing / dehydrating tub 2 is operated. Increase the rotation speed of.

As a result, it is possible to circulate a constant amount of wash water even if the water level is different. That is, even when the water level is low, the circulation amount does not decrease too much, and the detergency can be improved stably, and even when the water level is high, the circulation amount does not increase too much and foaming can be suppressed. At the same time, it is possible to suppress the consumption of extra power.

(Embodiment 6) As shown in FIG. 6, a water receiving tank 1d forms a pump chamber 3d which is angled rightward when viewed from the front at the bottom of the inner surface and is open inward. . In the pump chamber 3d, a circulation path 4d leading to above the water receiving tank 1d
And a shower nozzle 5 is arranged at the tip of the circulation path 4d. The other structure is the same as that of the first embodiment.

The operation of the above configuration will be described with reference to FIG.
As shown in Fig. 4, when the washing / dehydrating tub 2 is rotated to the left, the rotational force generated by the rotation of the washing / dehydrating tub 2 causes the washing water in the water receiving tub 1d to rotate to the left and concentrate in the pump chamber 3d. Then, the water pressure in the pump chamber 3d rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3d is further increased, the washing water is increased through the circulation path 4d, and finally the circulation path 4
From the shower nozzle 5 at the tip of d, water is sprinkled into the washing and dehydrating tub 2 and circulated.

At this time, since the washing water contains lint such as lint discharged from the laundry, when the washing water rotates leftward and concentrates on the pump chamber 3d, the pump chamber 3d Lint may adhere to the constituent inlet portion 17. Therefore, after rotating the washing / dehydrating tub 2 to the left, as shown in FIG. 8, a step of rotating the washing / dehydrating tub 2 to the right is performed, whereby the washing water in the water receiving tub 1d is rotated to the right. Since the lint attached to the inlet portion 17 of the pump chamber 3d can be automatically removed, it is possible to prevent the attached lint from accumulating.

In this embodiment, the bottom of the inner surface of the water receiving tub 1d has an angle to the right when viewed from the front, but has an angle to the left and the washing / dehydrating tub 2 faces to the right. It may be configured to circulate when rotated, and to automatically remove the attached lint when rotated leftward.

(Embodiment 7) In the configuration shown in FIG. 6, the washing / dehydrating tub 2 is constructed so that water is pumped by left rotation, and when the washing / dehydrating tub 2 rotates rightward, the washing / dehydrating tub 2 is rotated. The rotation of the water raises the washing water between the outside of the washing / dehydrating tub 2 and the receiving tub 1d, and sprinkles the water into the washing / dehydrating tub 2 from above. Other configurations are the same as those in the first or sixth embodiment.
Is the same as.

The operation of the above configuration will be described with reference to FIG.
As shown in Fig. 4, when the washing / dehydrating tub 2 is rotated to the left, the rotational force generated by the rotation of the washing / dehydrating tub 2 causes the washing water in the water receiving tub 1d to rotate to the left and concentrate in the pump chamber 3d. Then, the water pressure in the pump chamber 3d rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3d is further increased, the washing water is increased through the circulation path 4d, and finally the circulation path 4
From the shower nozzle 5 at the tip of d, water is sprinkled into the washing and dehydrating tub 2 and circulated.

When washing large clothes such as a blanket, it is necessary to raise the water level of the washing water and wash with a large amount of washing water. Therefore, when the water level is between the high water level and the medium water level, as shown in FIG. 9, by rotating the washing / dehydrating tank 2 to the right, the centrifugal force generated by the rotation causes the water level of the washing water in the water receiving tank 1d to be a mortar. The water surface between the washing / dehydrating tub 2 and the water receiving tub 1d rises, and the central portion falls.

When the rotation speed of the washing / dehydrating tub 2 is increased, the centrifugal force is increased, and the water surface between the outer side of the washing / dehydrating tub 2 and the water receiving tub 1d is further raised accordingly. And
Finally, the surface of the washing water can be sprayed and circulated into the inside of the washing / dehydrating tub 2 beyond the height of the upper end of the washing / dehydrating tub 2. At this time, since the water level of the wash water is high, the circulation amount of the wash water can be increased.

As described above, in the case of general laundry, the washing / dehydrating tub 2 is rotated counterclockwise to circulate and wash the wash water at a low water level and a high concentration, and in the case of washing large items such as blankets. By rotating the washing / dehydrating tub 2 to the right, a large amount of washing water can be circulated and washed at a high water level, and the optimum circulating washing can be performed depending on the rotating direction of the washing / dehydrating tub 2.

In this embodiment, the bottom of the inner surface of the water receiving tub 1d has an angle to the right when viewed from the front, but has an angle to the left and the washing / dehydrating tub 2 faces to the right. When rotated, it pumps water from the pump chamber 3d and circulates it, and when rotated to the left, the outside of the washing / dehydrating tub 2 and the receiving tub 1
You may comprise so that the washing water between d and the water may be raised and sprinkled in the washing and dehydrating tub 2 from above.

(Embodiment 8) In the structure shown in FIG. 6, the washing / dehydrating tub 2 is rotated leftward to pump water, and the washing / dehydrating tub 2 rotates rightward or leftward during dewatering. It is configured to do. Other configurations are the same as those in the first or sixth embodiment.
Is the same as.

The operation of the above configuration will be described with reference to FIG.
As shown in Fig. 4, when the washing / dehydrating tub 2 is rotated to the left, the rotational force generated by the rotation of the washing / dehydrating tub 2 causes the washing water in the water receiving tub 1d to rotate to the left and concentrate in the pump chamber 3d. Then, the water pressure in the pump chamber 3d rises. When the rotation speed of the washing / dehydrating tub 2 is increased, the rotational force is increased, and accordingly, the water pressure in the pump chamber 3d is further increased, the washing water is increased through the circulation path 4d, and finally the circulation path 4
From the shower nozzle 5 at the tip of d, water is sprinkled into the washing and dehydrating tub 2 and circulated.

Next, at the time of intermediate dewatering after washing, by rotating the washing / dehydrating tub 2 to the right, the high-concentration washing water remaining on the bottom surface of the water receiving tub 1d can be removed. Concentrate in the pump room 3d together with the air, bubbles,
It is possible to prevent the foamed detergent component from rising together with the air through the circulation path 4d and spraying the laundry from the shower nozzle 5 again.

Further, at the time of final dehydration after rinsing, by rotating the washing / dehydrating tub 2 to the left,
The air is concentrated in the pump chamber 3d, rises through the circulation path 4d, and is blown from the shower nozzle 5, whereby air is supplied to the laundry, which helps evaporation of water content and improves dehydration performance. it can.

[0061]

As described above, according to the first aspect of the present invention, a washing / dehydrating tub for storing laundry, and a water receiving tub for rotatably storing the washing / dehydrating tub, A drive means for rotating the washing / dehydrating tub, a pump chamber is formed on the inner surface of the water receiving tub, and the rotation of the washing / dehydrating tub causes a space between the outside of the washing / dehydrating tub and the water receiving tub. Since the washing water is collected in the pump chamber and pumped upward through the circulation path connected to the pump chamber, the washing water can be circulated and washed even when the water level is low, saving valuable water resources. In addition, the washing performance can be improved by washing with high-concentration washing water.

According to the second aspect of the present invention, since the shower nozzle is arranged at the tip of the circulation path and water is sprayed from above the shower nozzle into the washing / dehydrating tank, Concentrated washing water can be efficiently sprayed on the laundry, and the washing performance can be improved.

According to the third aspect of the present invention, since the lint filter is arranged at the tip of the circulation path and water is discharged from the lint filter into the washing / dehydrating tub, the washing / dehydrating tub is constructed. In circulation cleaning that rotates
The lint contained in the wash water can be collected.

According to the invention described in claim 4, a lint filter is connected in the middle of the circulation path, and
Since the shower nozzle is arranged at the tip of the circulation path and water is sprinkled from the shower nozzle into the washing / dehydrating tub from above, the lint contained in the washing water is removed during the circulation cleaning by rotating the washing / dehydrating tub. Not only can it be collected, but also high-concentration washing water can be efficiently sprayed on the laundry, and the washing performance can be improved.

Further, according to the invention of claim 5, since the device for changing the property of the washing water is connected in the middle of the circulation path, the washing water can be further activated and the washing can be performed. The performance can be further improved.

Further, according to the invention described in claim 6, since the rotation speed of the washing / dehydrating tub is changed according to the water level of the washing water in the water receiving tub, a constant washing is performed even if the water level is different. Water can be circulated, the amount of circulation does not decrease too much even when the water level is low, the cleaning power can be improved stably, and the amount of circulation does not increase too much even when the water level is high. In addition, it is possible to suppress foaming and to suppress consumption of extra power.

Further, according to the invention described in claim 7, the pump chamber is provided with directionality so that water is pumped only by rotating the washing / dehydrating tub in either one of the right direction and the left direction, and the washing is performed. Since the dewatering tank can be rotated in the other direction as well, lint such as thread waste attached to the inlet of the pump chamber can be automatically removed by the rotating water flow in the other direction, and the attached lint accumulates. Can be prevented.

According to the invention described in claim 8, the washing / dehydrating tub is constructed so that water is pumped by rotating the washing / dehydrating tub in either one of the right and left directions, and the washing / dehydrating tub is rotated in the other direction. When rotating, the rotation of the washing / dehydrating tub causes the washing water between the outside of the washing / dehydrating tub and the receiving tub to rise, and is configured to sprinkle water into the washing / dehydrating tub from above. Depending on the direction, this system circulates through the circulation path when the water level is low, and when the water level is high to medium, the surface of the washing water exceeds the height of the upper end of the washing and dewatering tank, It is possible to switch the conventional method of watering inside. As a result, general clothing circulates high-concentration washing water at a low water level through the circulation path, and large clothing such as blankets goes over the height of the upper edge of the washing / dehydrating tub into the washing / dehydrating tub. It can be switched to spray water.

According to the ninth aspect of the invention, the washing / dehydrating tub is constructed so that the washing / dehydrating tub is pumped only by rotating the washing / dehydrating tub in either one of the right and left directions. Since it is configured to rotate in the other direction, even when high-concentration washing water after washing remains on the bottom,
It is possible to prevent the washing water from being sprinkled on the laundry through the circulation path during dehydration.

According to the invention described in claim 10,
The washing / dehydrating tub was configured to pump water only in one direction, either right or left rotation, and the washing / dehydrating tub was also rotated in the same direction during dewatering. At the time of dehydration or the like, the air collected in the pump chamber is blown through the circulation path to enhance the dehydration efficiency.

[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 cross-sectional view of the operating state of the washing machine.

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

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

FIG. 5 is a vertical sectional view of a washing machine according to a fourth embodiment of the present invention.

FIG. 6 is a partially cutaway perspective view of a water receiving tub of a washing machine according to a sixth embodiment of the present invention.

FIG. 7 is a partially cutaway perspective view of the water receiving tank in the operating state of the washing machine.

FIG. 8 is a partially cutaway perspective view of the water receiving tank in the operating state of the washing machine.

FIG. 9 is a partially cutaway perspective view of the water receiving tank in the operating state of the washing machine according to the seventh embodiment of the present invention.

FIG. 10 is a vertical sectional view of a conventional washing machine.

FIG. 11 is a vertical cross-sectional view of an operating state of a conventional washing machine.

[Explanation of symbols]

1 water receiving tank 2 laundry and dehydration tank 3 pump rooms 4 circulation routes 8 motors (driving means)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuko Omura             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 3B155 AA19 BA08 BB08 BB14 CA16                       CB06 CB44 DB13 DB14 LA02                       MA01 MA02

Claims (10)

[Claims] 1. A water receiver comprising: a washing / dehydrating tub for containing laundry, a water receiving tub for rotatably accommodating the washing / dehydrating tub, and drive means for rotatably driving the washing / dehydrating tub. A pump chamber is formed on the inner surface of the tub, and by rotating the washing / dehydrating tub, the washing water between the outside of the washing / dehydrating tub and the water receiving tub is collected in the pump chamber and passed through a circulation path connected to the pump chamber. A washing machine configured to pump water upwards. 2. The washing machine according to claim 1, wherein a shower nozzle is arranged at the tip of the circulation path, and water is sprayed from above the shower nozzle into the washing / dehydrating tub from above. 3. The washing machine according to claim 1, wherein a lint filter is arranged at the tip of the circulation path, and water is discharged from the lint filter into the washing / dehydrating tub. 4. A lint filter is connected in the middle of the circulation path, a shower nozzle is arranged at the tip of the circulation path, and water is sprayed from above the shower nozzle into the washing / dehydrating tank. Or the washing machine described in 2. 5. The washing machine according to claim 1, wherein a device for changing the property of washing water is connected in the middle of the circulation path. 6. The number of rotations of the washing / dehydrating tank is changed according to the level of the washing water in the water receiving tank.
The washing machine according to any one of 5 above. 7. The pump room is provided with directionality such that the washing / dehydrating tub can be rotated by rotating the washing / dehydrating tub in either one of the right and left directions, and the washing / dehydrating tub can be rotated in the other direction. The washing machine according to any one of claims 1 to 6, wherein the washing machine is used. 8. The washing / dehydrating tub is constructed so that water is pumped by rotating the washing / dehydrating tub in either one of the right and left directions, and when the washing / dehydrating tub rotates in the other direction, the washing / dehydrating tub rotates. 8. The washing machine according to claim 7, wherein the washing water between the outside of the washing / dehydrating tub and the receiving tub rises and is sprinkled into the washing / dehydrating tub from above. 9. The washing / dehydrating tub is configured to pump water by rotating the washing / dehydrating tub only in one direction, that is, in the right or left direction, and is rotated in the other direction during dewatering. Item 7. A washing machine according to Item 7. 10. The washing / dehydrating tub is configured to pump water by rotating in either one direction, right rotation or left rotation, and the washing / dehydrating tub is rotated in the same direction during dewatering. 7. The washing machine described in 7.