JP4978731B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine that performs washing and rinsing by circulating washing water.

  Conventionally, this type of washing machine is configured as shown in FIG. Hereinafter, the configuration will be described.

  As shown in FIG. 10, the water receiving tub 17 includes a washing / dehydrating tub 18 that is rotatably arranged, and is suspended from the washing machine outer frame 20 by a suspension bar 19. The motor 21 rotationally drives the washing / dehydrating tub 18 via the speed reduction mechanism 22. The water supply valve 23 supplies water into the washing / dehydrating tank 18, the water level detection means 24 detects the water level in the water receiving tank 17, and the drain valve 25 supplies the washing water in the water receiving tank 17. It is what drains.

  The control device 26 controls the motor 21, the water supply valve 23, the drainage valve 25, and the like to sequentially control each process of washing, rinsing, and dehydration.

  The operation in the above configuration will be described. When the laundry and detergent are put into the washing / dehydrating tub 18 and the operation is started, the control device 26 operates the water supply valve 23 to supply water into the washing / dehydrating tub 18. 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. Thereafter, the motor 21 is operated by the control device 26 to rotate the washing and dewatering tub 18.

  As shown in FIG. 11, due to the centrifugal force generated by the rotation of the washing / dehydrating tub 18, the water surface of the washing water in the water receiving tub 17 becomes a mortar shape, and between the washing / dehydrating tub 18 and the water receiving tub 17. The water surface rises and the central part falls. When the rotation speed of the washing / dehydrating tub 18 is increased, the centrifugal force increases, and accordingly, the water surface between the outside of the washing / dehydrating tub 18 and the water receiving tub 17 is further increased. Finally, the water level of the washing water exceeds the height of the upper end of the washing / dehydrating tub 18 and is sprinkled and circulated into the washing / dehydrating tub 18.

  As described above, the washing and dewatering tub 18 is rotated at a predetermined number of rotations in a state where a predetermined amount of the washing water is stored in the water receiving tub 17, whereby the washing water can be sprinkled and circulated. By circulating the washing water, it becomes possible to accelerate the dissolution of the added detergent, so that the dissolution saturation can be reached at an early stage of the washing process, and the detergent components can effectively act on the laundry stains. 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.

  However, in such a conventional configuration, the surface of the washing water in the water receiving tub 17 becomes a mortar shape due to the centrifugal force generated by the rotation of the washing / dehydrating tub 18. In order to spray water into the interior beyond the height, the amount of water that fills the space between the washing and dewatering tub 18 and the water receiving tub 17 and the total amount of water present in the center of the washing and dewatering tub 18 are at least Necessary, and water below that level cannot be sprinkled even if the rotational speed is increased.

That is, in order to sprinkle the washing and dewatering tub 18 beyond the upper end, the water level of the washing water must be higher than a certain level, and there is a natural limit to saving water resources. . Furthermore, when a certain amount of detergent is added to a small amount of washing water, it becomes high-concentration washing water and the cleaning power can be increased, but there is a limit to this because there is a limit in saving water.

  In addition, since such circulating washing only circulates washing water directly, lint such as yarn waste contained in the washing water could not be collected.

  The present invention solves the above-mentioned conventional problems, and saves precious water resources by circulating washing with low-level washing water, and further improves washing performance by washing with high-concentration washing water. It is an object.

  In order to achieve the above object, the present invention is configured such that a washing / dehydrating tub for storing laundry is rotatably accommodated in a water receiving tub, and the washing / dehydrating tub is driven to rotate right or left by a driving means. A pump chamber is formed on the inner surface of the water receiving tub on the inner surface of the water receiving tub by rotating the washing and dewatering tub in either the right or left direction only in one direction. The washing and dewatering tub is configured to rotate in a direction in which washing water or rinsing water between the water receiving tub and the water receiving tank is pumped and poured, and when dehydrating, the direction opposite to the direction in which the water is pumped and poured. The washing and dewatering tank is rotated.

  Thereby, circulation washing can be performed with low-level washing water, precious water resources can be saved, and washing performance can be improved by washing with high-concentration washing water.

  In the washing machine of the present invention, when the washing and dewatering tub is driven to rotate, the washing water concentrates in the pump chamber on the inner surface of the water receiving tub, so that the water pressure increases, and even when the water level is low, the washing water is circulated and washed. Can save valuable water resources, and washing with high-concentration washing water can improve the washing performance, and the high-concentration washing water after washing remains at the bottom. Even in such a case, it is possible to prevent the washing water from being sprinkled on the laundry through the circulation path during dehydration.

The longitudinal cross-sectional view of the washing machine of the 1st Embodiment of this invention Longitudinal sectional view of the operating state of the washing machine Longitudinal sectional view of the washing machine of the second embodiment of the present invention Longitudinal sectional view of a washing machine according to a third embodiment of the present invention Longitudinal sectional view of a washing machine according to a fourth embodiment of the present invention The perspective view which notched the water receiving tank of the washing machine of the 6th Embodiment of this invention partially Partially cutaway perspective view of the water receiving tank in the operating state of the washing machine Partially cutaway perspective view of the water receiving tank in the operating state of the washing machine The perspective view which notched the water receiving tank of the operation state of the washing machine of the 7th Embodiment of this invention partially notched Vertical section of a conventional washing machine Longitudinal sectional view of the operating state of a conventional washing machine

The invention according to claim 1 of the present invention is a washing and dewatering tub for storing laundry, a water receiving tub for rotatably storing the washing and dewatering tub, and rotating the washing and dewatering tub to the right or left. And a pump chamber for pumping water through the circulation path and injecting water into the washing and dewatering tub by rotation in only one of the right and left rotations of the washing and dewatering tub. Formed on the inner surface of the tub, and configured to rotate the washing / dehydrating tub in a direction of pumping and pouring washing water or rinsing water between the outside of the washing / dehydrating tub and the water receiving tub, when,
The washing and dewatering tub is rotated in a direction opposite to the direction in which the water is pumped and poured, and when the washing and dewatering tub is rotated, the washing water is concentrated in the pump chamber on the inner surface of the water receiving tub. The water pressure increases, and even when the water level is low, washing water can be circulated and washed, saving valuable water resources and improving washing performance by washing with high concentration washing water. Can do. Further, even when high-concentration wash water after washing remains in the bottom, it is possible to prevent the wash water from being sprinkled through the circulation path during dehydration.

  According to the second aspect of the present invention, a washing / dehydrating tub for storing laundry, a water receiving tub for rotatably storing the washing / dehydrating tub, and the washing / dehydrating tub can be rotated right or left. And a pump chamber for pumping water through the circulation path and injecting water into the washing and dewatering tub by rotation in only one of the right and left rotations of the washing and dewatering tub. The washing and dewatering tub is configured to rotate in the direction of pumping and pouring washing water or rinsing water between the outside of the washing and dewatering tub and the water receiving tub. The washing / dehydrating tub is rotated in the same direction as the pumping and pouring direction. 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. When the water pressure increases and the water level is low Can also be circulated to wash the washing water, it is possible to save precious water resources, by washing with a high concentration of the washing water, it is possible to improve the cleaning performance. Further, at the time of final dehydration after rinsing, the air collected in the pump chamber is blown through the circulation path, so that dehydration efficiency can be improved.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a shower nozzle is disposed at the tip of the circulation path, and water is sprinkled from above the shower nozzle into the washing and dewatering tub. It is configured, and high-concentration washing water can be efficiently sprinkled onto the laundry, and the washing performance can be improved.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, a lint filter is disposed at the tip of the circulation path, and water is discharged from the lint filter into a washing and dewatering tub. In the circulation cleaning in which the washing and dewatering tub is rotated, the lint contained in the washing water can be recovered.

  The invention according to claim 5 is the invention according to any one of claims 1 to 3, wherein a lint filter is connected in the middle of the circulation path, and a shower nozzle is disposed at the tip of the circulation path, Water is sprayed from above into the washing / dehydrating tub from the nozzle, and in the circulation washing that rotates the washing / dehydrating tub, lint contained in the washing water can be collected and high-concentration washing Water can be efficiently sprinkled on the laundry, and the cleaning performance can be improved.

  A sixth aspect of the present invention is the invention according to the first or second aspect, wherein a device for changing the temperature of the wash water or the rinse water is connected in the middle of the circulation path. Can be further activated, and the cleaning performance can be further improved.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the rotational speed of the washing and dewatering tub is changed according to the level of the washing water or the rinsing water in the water receiving tub. Even if the water level is different, it is possible to circulate a certain amount of washing water, and even when the water level is low, the circulation amount does not decrease too much, and the washing power can be improved stably and the water level Even when the flow rate is high, the amount of circulation does not increase excessively, foaming can be suppressed, and consumption of excess power can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description.

(Embodiment 1)
As shown in FIG. 1, the water receiving tank 1 forms a pump chamber 3 that opens inward at the bottom of the inner surface, and connects the circulation path 4 leading to the upper side of the water receiving tank 1 to the pump chamber 3. A shower nozzle 5 is disposed at the tip of the circulation path 4.

  The washing / dehydrating tub 2 is rotatably disposed in the water receiving tub 1, and the water receiving tub 1 is suspended from the washing machine outer frame 7 by a suspension rod 6. The motor (driving means) 8 rotationally drives the washing / dehydrating tub 2 via the speed reduction mechanism 9. The water supply valve 10 supplies water into the washing / dehydrating tank 2, the water level detection means 11 detects the water level in the water receiving tank 1, and the drain valve 12 is the washing water in the water receiving tank 1. It drains water.

  The control device 13 controls the motor 8, the water supply valve 10, the drain valve 12, and the like to sequentially control each process of washing, rinsing, and dehydration.

  The operation in the above configuration will be described. When the 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 and water is supplied into the washing / dehydrating tub 2. . When the water level detection means 11 detects a predetermined water level, a signal is sent to the control means 13 and the operation of the water supply valve 10 is stopped. Thereafter, the motor 8 is driven by the control device 13 to rotate the washing and dewatering tub 2.

  As shown in FIG. 2, 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 and dewatering tub 2, and the water pressure in the pump chamber 3 is increased. When the rotational speed of the washing / dehydrating tub 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3 increases further, the washing water rises through the circulation path 4, and finally the tip of the circulation path 4. Water is sprayed from the shower nozzle 5 to the inside of the washing and dewatering tank 2 and circulated.

  As described above, the washing and dewatering tub 2 is rotated at a predetermined rotational speed while a small amount of washing water is stored in the water receiving tub 1, whereby the washing water can be sprinkled and circulated in the laundry. By sprinkling and circulating the washing water, it is possible to accelerate dissolution of the added detergent, and to reach dissolution saturation at an early stage of the washing process, so that the detergent components 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. Furthermore, since the washing water can be circulated at a low water level, valuable water resources can be saved, and washing with high-concentration washing water can be performed, and the washing performance can be improved.

  The rinse water may be circulated not only during washing but also during rinsing. Thereby, precious water resources can be saved.

(Embodiment 2)
As shown in FIG. 3, the circulation path 4 a is connected to the pump chamber 3 at one end and communicates above the water receiving tank 1. A lint filter 14 is disposed at the tip of the circulation path 4 a, and the lint filter 14 The water is discharged into the washing and dewatering tub 2. Other configurations are the same as those of the first embodiment.

The operation in the above configuration 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 due to the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure increases. When the rotational speed of the washing / dehydrating tub 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3 increases further, the washing water rises through the circulation path 4a, and finally the tip of the circulation path 4a. Water is discharged from the lint filter 14 to the inside of the washing and dewatering tank 2 and circulated.

  As described above, the washing water can be discharged and circulated through the lint filter 14 by rotating the washing and dewatering tank 2 at a predetermined rotational speed in a state where the predetermined amount of the washing water is stored in the water receiving tank 1. The lint can be recovered.

(Embodiment 3)
As shown in FIG. 4, the circulation path 4b is connected to the pump chamber 3 at one end and communicates with the upper part of the water receiving tank 1. A lint filter 15 is connected to the middle of the circulation path 4b, and the circulation path 4b. A shower nozzle 5 is disposed at the tip of the tub, and water is sprayed from the shower nozzle 5 into the washing and dewatering tub 2 from above. Other configurations are the same as those of the first embodiment.

  The operation in the above configuration 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 due to the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure increases. When the rotational speed of the washing / dehydrating tub 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3 increases further, the washing water rises through the circulation path 4b, and finally in the middle of the circulation path 4b. The water passes through the lint filter 15 connected to the water and is sprinkled from the shower nozzle 5 at the tip of the circulation path 4b to the inside of the washing and dewatering tub 2 and circulated.

  Thus, the washing water can be passed through the lint filter 14 by rotating the washing and dewatering tank 2 at a predetermined rotational speed in a state where a predetermined amount of the washing water is stored in the water receiving tank 1, Can be recovered.

  Furthermore, since the washing water can be circulated while being sprinkled on the laundry, it is possible to accelerate the dissolution of the added detergent. Therefore, the washing performance of the laundry can be improved.

(Embodiment 4)
As shown in FIG. 5, the circulation path 4c is connected to the pump chamber 3 at one end and communicates with the upper part of the water receiving tank 1. A heater 16 is connected to the circulation path 4c and the circulation path 4c is connected to the circulation path 4c. A shower nozzle 5 is disposed at the tip, and water is sprayed from above the shower nozzle 5 into the washing and dewatering tub 2. Other configurations are the same as those of the first embodiment.

  The operation in the above configuration 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 due to the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure increases. When the rotational speed of the washing / dehydrating tub 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3 increases further, the washing water rises through the circulation path 4c, and finally in the middle of the circulation path 4c. The water passes through the heater 16 connected to the water and is sprinkled from the shower nozzle 5 at the tip of the circulation path 4c to the inside of the washing and dewatering tub 2 for circulation.

  Thus, the washing water can be passed through the heater 16 by rotating the washing and dewatering tank 2 at a predetermined number of revolutions in a state where the predetermined amount of the washing water is stored in the water receiving tank 1. The temperature can be increased. This makes it possible to sprinkle and circulate the wash water whose temperature has increased in the laundry, so that it is possible to further accelerate the dissolution of the added detergent, and to reach dissolution saturation at an early stage of the washing process, thereby allowing the detergent components to be washed. Therefore, the washing performance of the laundry can be further enhanced.

  In the present embodiment, the heater 16 is connected in the middle of the circulation path 4, but any device that changes the properties of water, such as an electrolyzed water generating device or a disinfectant supplying device, may be used.

(Embodiment 5)
The control device 13 shown in FIG. 1 changes the rotational speed of the washing and dewatering tub 2 depending on the level of the washing water in the water receiving tub 1. Other configurations are the same as those of the first embodiment.

  The operation in the above configuration 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 / dehydration tank 2 is decreased, and when the water level of the washing water is high, the rotation speed of the washing / dehydration tank 2. To raise.

  As a result, it is possible to circulate a certain amount of washing water even if the water levels are different. That is, even when the water level is low, the circulation amount does not decrease excessively, and the cleaning power can be stably improved, and even when the water level is high, the circulation amount does not increase excessively and foaming can be suppressed. At the same time, the consumption of extra power can be suppressed.

(Embodiment 6)
As shown in FIG. 6, the water receiving tank 1d forms a pump chamber 3d having an angle in the right direction and opened inward at the bottom of the inner surface when viewed from the front. The pump chamber 3d is connected to a circulation path 4d leading to the upper side of the water receiving tank 1d, and a shower nozzle 5 is disposed at the tip of the circulation path 4d. Other configurations are the same as those of the first embodiment.

  The operation in the above configuration will be described. As shown in FIG. 7, when the washing / dehydrating tub 2 is rotated leftward, the washing water in the water receiving tub 1d is left by the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure in the pump chamber 3d rises while concentrating on the pump chamber 3d while rotating in the direction. When the rotational speed of the washing and dewatering tank 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3d increases further, the washing water rises through the circulation path 4d, and finally the tip of the circulation path 4d. Water is sprayed from the shower nozzle 5 to the inside of the washing and dewatering tank 2 and circulated.

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

  In the present 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 and dewatering tub 2 is rotated to the right. It may be configured such that the lint that circulates when rotating and automatically removes the lint attached when rotated to the left is automatically removed.

(Embodiment 7)
In the configuration shown in FIG. 6, the washing and dewatering tub 2 is configured to be pumped by left rotation, and when the washing and dewatering tub 2 rotates in the right direction, the washing and dewatering tub 2 rotates to rotate the washing and dewatering tub 2 The washing water between the outer side of 2 and the receiving tub 1d rises, and water is sprinkled into the washing and dewatering tub 2 from above. Other configurations are the same as those of the first or sixth embodiment.

The operation in the above configuration will be described. As shown in FIG. 7, when the washing / dehydrating tub 2 is rotated leftward, the washing water in the water receiving tub 1d is left by the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure in the pump chamber 3d rises while concentrating on the pump chamber 3d while rotating in the direction. When the rotational speed of the washing and dewatering tank 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3d increases further, the washing water rises through the circulation path 4d, and finally the tip of the circulation path 4d. Water is sprayed from the shower nozzle 5 to the inside of the washing and dewatering tank 2 and circulated.

  Also, when washing large clothes such as blankets, it is necessary to raise the water level of the washing water and wash with a large amount of washing water. Therefore, as shown in FIG. 9, when the washing and dewatering tub 2 is rotated clockwise as shown in FIG. 9, the surface of the washing water in the water receiving tub 1 d is mortared by the centrifugal force generated by the rotation. The water surface between the washing and dewatering tub 2 and the water receiving tub 1d rises, and the central portion falls.

  When the rotational speed of the washing / dehydrating tub 2 is increased, the centrifugal force increases, and accordingly, the water surface between the outside of the washing / dehydrating tub 2 and the water receiving tub 1d is further increased. Finally, the surface of the washing water can be sprinkled and circulated into 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 washing water is high, the circulation amount of the washing water can be increased.

  As described above, in the case of general laundry, the washing and dewatering tub 2 is rotated leftward so that the washing water is circulated and washed at a low water level and high concentration. By rotating the water tank 2 in the right direction, a large amount of washing water can be circulated and washed at a high water level, and the optimum circulation washing can be performed depending on the rotation direction of the washing and dewatering tub 2.

  In the present 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 and dewatering tub 2 is rotated to the right. When the water is pumped up from the pump chamber 3d and circulated and rotated counterclockwise, the washing water between the outside of the washing / dehydrating tub 2 and the receiving tub 1d is raised, You may comprise so that it may sprinkle from upper direction.

(Embodiment 8)
In the configuration shown in FIG. 6, the washing and dewatering tub 2 is configured to be pumped up by the left rotation, and at the time of dehydration, the washing and dehydrating tub 2 is configured to rotate in the right direction or the left direction. Other configurations are the same as those of the first or sixth embodiment.

  The operation in the above configuration will be described. As shown in FIG. 7, when the washing / dehydrating tub 2 is rotated leftward, the washing water in the water receiving tub 1d is left by the rotational force generated by the rotation of the washing / dehydrating tub 2. The water pressure in the pump chamber 3d rises while concentrating on the pump chamber 3d while rotating in the direction. When the rotational speed of the washing and dewatering tank 2 is increased, the rotational force increases, and accordingly, the water pressure in the pump chamber 3d increases further, the washing water rises through the circulation path 4d, and finally the tip of the circulation path 4d. Water is sprayed from the shower nozzle 5 to the inside of the washing and dewatering tank 2 and circulated.

  Next, at the time of intermediate dehydration after washing, by rotating the washing / dehydrating tub 2 in the right direction, the high-concentration washing water remaining on the bottom surface of the water receiving tub 1d and the like is mixed with the air. Thus, the detergent component that is concentrated in the pump chamber 3d and is foamed or foamed together with the air rises through the circulation path 4d and can be prevented from watering again from the shower nozzle 5 into the laundry.

  Furthermore, at the time of final dehydration after rinsing, by rotating the washing and dewatering tank 2 counterclockwise, air is concentrated in the pump chamber 3d and rises through the circulation path 4d and is blown from the shower nozzle 5. As a result, air is supplied to the laundry, which helps to evaporate the moisture contained therein and improve the dewatering performance.

DESCRIPTION OF SYMBOLS 1 Water receiving tank 2 Washing / dehydration tank 3 Pump room 4 Circulation route 8 Motor (drive means)

Claims (7)

A washing / dehydrating tub for storing laundry, a water receiving tub for rotatably storing the washing / dehydrating tub, and a driving means for allowing the washing / dehydrating tub to be rotated right or left, The washing and dewatering tub is formed on the inner surface of the water receiving tub by pumping water into the washing and dewatering tub through the circulation path by rotating only in one of the right and left rotations of the washing and dewatering tub. The washing and dewatering tub is configured to rotate in a direction in which the washing water or the rinsing water between the outside of the water receiving tub and the water receiving tank is pumped and poured. A washing machine in which the washing and dewatering tub is rotated in a direction. A washing / dehydrating tub for storing laundry, a water receiving tub for rotatably storing the washing / dehydrating tub, and a driving means for allowing the washing / dehydrating tub to be rotated right or left, The washing and dewatering tub is formed on the inner surface of the water receiving tub by pumping water into the washing and dewatering tub through the circulation path by rotating only in one of the right and left rotations of the washing and dewatering tub. The washing and dewatering tub is configured to rotate in the direction in which the washing water or the rinsing water between the outside and the water receiving tub is pumped and injected, and the same direction as the direction in which the water is pumped and poured also during dehydration. A washing machine in which the washing and dewatering tub is rotated. The washing machine according to claim 1 or 2, wherein a shower nozzle is disposed at a tip of the circulation path, and water is sprinkled from above the shower nozzle into a washing and dewatering tub. The washing machine according to claim 1 or 2, wherein a lint filter is disposed at a tip of the circulation path, and water is discharged from the lint filter into a washing and dewatering tub. The lint filter is connected in the middle of the circulation path, and a shower nozzle is disposed at the tip of the circulation path, and water is sprayed from above the shower nozzle into the washing and dewatering tank. A washing machine according to claim 1. The washing machine according to claim 1 or 2, wherein a device for changing the temperature of washing water or rinsing water is connected in the middle of the circulation path. The washing machine according to any one of claims 1 to 6, wherein the number of rotations of the washing and dewatering tub is changed depending on the level of the washing water or the rinsing water in the water receiving tub.

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