JPH11137895A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save water and a detergent, to prevent the laundry from being contaminated by black mold, and further, to effectively dry the dehydrated laundry. SOLUTION: This washing machine comprises a disentangling member 9 attached to the inner wall face of a laundry dehydrator 1 so as to be pushed toward the center part of the laundry dehydrator 1 and for disentangling the dewatered laundry, a pushing means for pushing the disentangling member 9 toward the center part of the laundry dehydrator 1, and a dehumidifier 17. An annular waste pipe 7 has an annular opening 7a in the inner wall part, the laundry dehydrator 1 has a plurality of exhaust ports 1a at a position facing the annular opening 7a, and the diameter of the dehydrator increases from the bottom toward the top. A second cylindrical rotation axis 6a has at its upper side wall a hole communicating with the laundry dehydrator 1 and at its lower end part an exhaust air passage connected so as to rotate coaxially and relatively for guiding dry air from the dehumidifier 17 into the laundry dehydrator 1 by changing over a three way valve 19, a waste water passage for draining the wash water in the washing and dehydrating tub 1 out, and a three way branch pipe 18 which forms a shut-off passage for stopping the wash water from flowing out of the laundry dehydrator 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view showing a main part of a conventional washing machine.

In FIG. 1, reference numeral 21 denotes a cylindrical washing tub having a bottom, which is fixed to a rotating shaft 22. 23 is a pulley for rotating the washing tub 21. 21a is a washing tub 21
A large number of drain holes are provided at regular intervals in the circumferential direction and the vertical direction. Reference numeral 24 denotes a pulsator mounted on the bottom of the washing tub 21, which is configured to rotate coaxially with the rotation shaft 22. 25 is a pulley for a pulsator.

[0004] Reference numeral 26 denotes a water receiving tank disposed outside the washing tub 21 at regular intervals, reference numeral 27 denotes a drain pipe thereof, and reference numeral 28 denotes a drain valve provided in the drain pipe 27. 29 is an exterior case.

[0005] Since the conventional washing machine has the above-described configuration, the drain valve 28 is closed during washing and the washing tub 2 is closed.
The pulsator 24 may be rotated by supplying water to 1, adding a detergent, loading laundry, and so on. At the time of rinsing, the drain valve 28 is opened, and the pulsator 24 may be rotated while supplying water. Further, at the time of dehydration, the water supply and the pulsator 24 may be stopped, and the washing tub 21 may be rotated.

[0006]

However, the conventional washing machine has the following problems.

(1) The water tub 26 is disposed outside the washing tub 21. Since the drainage hole 21a is provided in the washing tub 21, the water level in the washing tub 21 and the water receiving tub 26 are the same. become.

Therefore, during washing, depending on the amount of laundry, 10 to 30% of detergent and water enter the gap between the two tubs 21 and 26, and become dead water and dead detergent. turn into. When rinsing, the same amount of water is dead and wasted. Not only that, but the time of water supply and drainage is wasted as much as dead water.

(2) Washing, rinsing, and dewatering require two tubs, a washing tub 21 and a water receiving tub 26, and it is necessary to seal the space between the rotating shaft 22 and the water receiving tub 26 that does not want to leak water. As the cost increases.

(3) Black mold may be generated outside the washing tub 21 on the side of the water receiving tub 26, thereby contaminating the laundry.

(4) Since it is a vertical washing machine, it can be washed and dehydrated but cannot be dried. Only a horizontal drum type washing machine can be dried. The reason that drying cannot be performed by the vertical washing machine is that when dehydration is completed, the laundry adheres to the inner wall surface of the dehydration tub 21 and a flow path of dry air cannot be secured between the laundry and the dehydration tub 21. That's why.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and has a structure in which water and detergent can be saved, and a laundry is not contaminated with black mold and the like. It is an object of the present invention to provide an inexpensive washing machine provided with a drying mechanism for drying the laundry.

Another object of the present invention is to provide a vertical washing machine provided with a drying mechanism for drying laundry after dehydration.

[0014]

According to a washing machine provided by the present invention, a bottom is fixed to a first cylindrical rotating shaft, and a pulsator is attached to a second cylindrical rotating shaft inserted through the first cylindrical rotating shaft. A cylindrical dewatering tub with a bottom, an annular drainage pipe arranged coaxially with the upper part of the dehydration tub, and attached to the inner wall of the dehydration tub so that it can be pushed out toward the center of the dehydration tub
A loosening member for loosening the laundry after dehydration, an extruding means for pushing the loosening member toward the center of the washing and dewatering tub, and a dehumidifier, wherein the annular drainage pipe has an annular opening in an inner wall portion, The washing and dewatering tub has a plurality of drain holes at positions facing the annular opening, and has a diameter gradually increasing from the bottom to the top. The second cylindrical rotating shaft has a washing and dewatering tub on its upper side wall. Has a hole leading to the lower end,
An exhaust passage that is coaxially and relatively rotatably connected and guides dry air from the dehumidifier to the washing and dewatering tub by switching a three-way valve, a drainage passage that discharges washing water from the washing and dewatering tub to the outside, It is provided with a three-way branch pipe forming a closed path for stopping outflow from the water tank (hereinafter, referred to as a first washing machine).

Another washing machine provided by the present invention is:
A bottomed cylindrical washing tub having a bottom fixed to a first cylindrical rotating shaft and a pulsator attached to a second cylindrical rotating shaft inserted through the first cylindrical rotating shaft; A water receiving tub disposed coaxially with the tub, a loosening member for loosening dewatered laundry, and a loosening member attached to the inner wall surface of the washing tub so as to be able to be pushed out toward the center of the washing tub. And a dehumidifier. The second cylindrical rotary shaft has a hole in an upper side wall thereof that communicates with a water receiving tank, and a lower end portion thereof is coaxially and relatively rotatable. It is connected and has an exhaust path that guides dry air from the dehumidifier to the washing tub by switching the three-way valve, a drain path that discharges washing water from the water receiving tank to the outside, and a closed path that stops outflow of washing water from the water receiving tank. (Hereinafter referred to as a second washing machine). U).

[0016]

According to the first washing machine of the present invention, at the time of washing,
First, the loosening member is positioned from the pushing position to the retracted position, and the three-way valve of the three-way branch pipe is switched to form a closed path. Next, water is supplied to the washing dehydration tub, detergent is added, laundry is put in, and the pulsator is rotated.

At the time of rinsing, the pulsator is rotated while supplying water to the washing and dewatering tub. At this time, the water in the washing and dewatering tub is discharged from the drainage hole to the annular drainage pipe, and from there to the outside.

At the time of dewatering, the three-way valve of the three-way branch pipe is switched to form a drainage channel, the water supply and the pulsator are stopped, and the washing and dewatering tub is rotated at high speed. At this time, the water in the washing dewatering tub and the water contained in the laundry move upward along the inclined inner surface of the tub due to centrifugal force, and are discharged from the drain hole to the annular drain pipe, It is also discharged from drains. Washing water and rinsing water accumulated in the second cylindrical rotating shaft and the three-way branch pipe during washing and rinsing are discharged from the drainage channel.

At the time of drying, the laundry in the washing and dewatering tub is annularly attracted to the inner wall surface of the tub by centrifugal force during dehydration. For this reason, a ventilation path has already been formed in the central portion of the laundry during the dehydration process.

After the dehydration is completed, the loosening member is pushed out toward the center of the washing and dewatering tub by the pushing means, and the laundry stuck to the inner wall surface of the tub is loosened. In this way, a ventilation path is formed between the laundry items and between the laundry item and the laundry dehydration tub.

Next, the exhaust path is formed by switching the three-way valve of the three-way branch pipe, and the dehumidifier is operated. At this time, the air containing moisture in the outer case and the washing and dewatering tub is sucked and dehumidified by the dehumidifier. The dehumidified and dried air passes through the ventilation path through the three-way branch pipe, the second cylindrical rotation shaft, and the hole thereof. In this process, the dry air absorbs the moisture of the laundry, enters the outer case, and enters the dehumidifier. The laundry is dried by repeating the above-described cycle of dehumidification and moisture absorption. In addition, this drying and unraveling of the laundry mentioned above,
It can be repeated as appropriate.

In the second washing machine according to the present invention, at the time of washing, first, the loosening member is positioned from the pushing position to the retracted position, and the three-way valve of the three-way branch pipe is switched to form a closed path. Next, water is supplied to the washing tub, detergent is added, laundry is put in, and the pulsator is rotated.

At the time of rinsing, the pulsator is rotated while supplying water to the washing tub. At this time, the water in the washing tub is discharged outside from a drainage channel formed by switching the three-way valve of the three-way branch pipe.

At the time of dehydration, the water supply and the pulsator are stopped, and the washing tub is rotated at a high speed. At this time, the water in the washing tub and the water receiving tub and the water contained in the laundry are discharged from the drainage channel to the outside. Washing water and rinsing water accumulated in the second cylindrical rotating shaft and the three-way branch pipe during washing and rinsing are also discharged from the drainage channel.

At the time of drying, the laundry in the washing tub is annularly attracted to the inner wall surface of the washing tub by centrifugal force during dehydration. For this reason, a ventilation path has already been formed in the central portion of the laundry during the dehydration process.

After the spin-drying is completed, the loosening member is pushed out toward the center of the washing tub by the pushing means to loosen the laundry stuck to the inner wall surface of the washing tub. In this way, a ventilation path is formed between the laundry items and between the laundry item and the washing tub.

Next, an exhaust path is formed by switching the three-way valve of the three-way branch pipe, and the dehumidifier is operated. At this time, the air containing moisture in the outer case and the washing tub is sucked and dehumidified by the dehumidifier. The dehumidified and dried air passes through the ventilation path through the three-way branch pipe, the second cylindrical rotation shaft, and the hole thereof. In this process, the dry air absorbs the moisture of the laundry, enters the outer case, and enters the dehumidifier. The laundry is dried by repeating the above-described cycle of dehumidification and moisture absorption. The drying and the above-described loosening of the laundry can be appropriately repeated.

[0028]

Embodiments of the present invention will be described below with reference to embodiments.

(Embodiment 1) FIG. 1 is a sectional view of a main part of an embodiment of a first washing machine, FIG. 2 is an enlarged perspective view of a main part of FIG. 1, and FIG. It is operation | movement explanatory drawing.

In the drawing, reference numeral 1 denotes a bottomed cylindrical washing and dewatering tub whose diameter gradually increases from the bottom to the top, and is fixed to the cylindrical rotating shaft 2. The cylindrical rotating shaft 2 is
It is attached to the outer case 4 via the bearing 3.
The diameter of the top of the washing and dewatering tub 1 is 5 to 10 times that of the bottom.
It is necessary to increase by%. In this embodiment, it is formed 8% larger. Reference numeral 5 denotes a pulley for rotating the washing and dewatering tub 1.

1a is a drainage hole provided in the upper peripheral wall of the washing and dewatering tub 1 in an annular manner at a constant interval, and 1b is a drainage hole 1a.
It is a ring-shaped drain port provided in a brim-like position at the position.

Reference numeral 6 denotes a pulsator mounted on the bottom of the washing and dewatering tub 1, which is configured to rotate around a cylindrical rotary shaft 6a inserted through the rotary shaft 2 in a watertight state. 6b is a pulley for a pulsator. Reference numeral 6c denotes a hole provided to the washing and dewatering tub 1 provided on the rotating shaft 6a.

Numeral 7 denotes an annular drainage pipe disposed coaxially with the upper part of the washing and dewatering tub 1, and numeral 7a denotes an annular opening provided in the inner wall thereof. The annular drain port 1b is fitted in the annular opening 7a. The washing and dewatering tub 1 and the annular drainage pipe 7 are arranged at positions where such a fitting relationship is obtained.

Reference numeral 8 denotes a drain pipe connected to the annular drain pipe 7 for discharging the water of the washing and dewatering tub 1 flowing into the annular drain pipe 7 through the annular drain port 1b to the outside.

Reference numeral 1c denotes a low quadrangular pyramid-shaped projection provided on the inner peripheral surface of the washing and dewatering tub 1. The six convex portions 1c are provided in a line in the vertical direction, and one unit is arranged in this line, and 12 units are provided at intervals of 30 degrees in the circumferential direction.

Although not shown, a means is provided for preventing the laundry dehydration tub from vibrating due to the bias of the laundry during the dehydration.

Reference numeral 9 denotes a loosening member for loosening the dewatered laundry, which is attached to a rotating shaft 10 attached to an inner wall surface near the opening of the washing dehydration tub 1 via a bracket (not shown). The loosening member 9 has a shape and size along the inner wall surface of the washing and dewatering tub and not interfering with the pulsator 6 in the attached state. That is, as shown in FIG. 2, the loosening member 9 has a shape in which a U-shaped bar is bent into an L-shape, and the bar is disposed between the convex portions 1 c of the washing and dewatering tub 1. It has become. Relaxing member 9
Are arranged at 60-degree intervals in total.

Reference numeral 11 denotes a spring which presses the loosening member 9 against the inner wall surface of the washing and dewatering tub 1 to urge it to the retracted position.

Reference numeral 12 denotes an extrusion rod protruding from the loosening member 9, which is inserted into a drain 1 a (FIG. 3) provided between the drain 1 a of the washing and dewatering tub 1 (FIG. 3). It protrudes. The push rod 12 pushes the loosening member 9 toward the center of the washing and dewatering tub 1 against the bias of the spring when the push rod 12 comes into contact with a roller 13 which is provided at a corner portion of the pipe 7 and comes to a later-described advanced position. . G is a cushion rubber for reducing the impact when the loosening bar 9 returns to the retracted position by the spring 11 from the push-out position (advance position), and is fitted in a recess provided in the washing and dewatering tub 1.

Reference numeral 13 denotes an annular drain pipe 7 as shown in FIG.
Rollers disposed at the corners of are used to push out the loosening member 9 when the push rod 12 comes into contact. The roller 13 is attached to a keyed motor 15 via an arm 14 so as to be rotatable in the horizontal direction. The chain line position is the retreat position, and the solid line position is the advance position. Driving to both positions is performed by control means (not shown). 16 is
This is a stopper of the arm 14 of the roller 13 that has reached the advanced position.

The positional relationship and operation between the roller 13 and the loosening member 9 are as follows.

Now, when the roller 13 is moved to the advanced position and the washing / dewatering tub 1 is gently rotated in the direction of arrow R, the push rod 12 comes into contact with the roller 13 and is pushed by it. Then, each loosening member 9 is sequentially pushed out toward the center of the washing and dewatering tub 1. The laundry after dehydration is loosened by the extruded loosening member 9.

Reference numeral 17 denotes a dehumidifier, and reference numeral 18 denotes a three-way branch pipe interposed between the cylindrical rotary shaft 6a and the dehumidifier 17. The three-way branch pipe 18 includes a first branch pipe 18a, a second branch pipe 18b, and a third branch pipe 18c. The first branch pipe 18a and the cylindrical rotary shaft 6a are connected coaxially and relatively rotatably, the second branch pipe 18b is connected to a dry air outlet (not shown) of the dehumidifier 17, and the third branch pipe is provided. 18c is open to the outside air.

Reference numeral 19 denotes a three-way valve provided in the three-way branch pipe 18. When the three-way valve 19 is switched to the solid line position, the first branch pipe 18a forms a closed path for stopping the outflow of the washing water from the washing / dewatering tub 1. When the three-way valve 19 is switched by rotating it 120 degrees to the left in the drawing, the first branch pipe 18a and the second branch pipe 18b cause the dry air from the dehumidifier 17 to wash the dewatering tank 1
An exhaust path leading to the Turn the three-way valve 19 further left 12
When the rotation is switched by 0 degrees, the first branch pipe 18a and the third branch pipe 18c form a drainage channel for discharging the washing water in the washing and dewatering tub 1 to the outside. The control of the three-way valve 19 is performed by a control device (not shown). Reference numeral 20 denotes a lid of the washing machine, which is covered by an upper opening of the outer case 4.

Since the washing machine of the embodiment has the above-described configuration, during washing, the roller 13 is positioned at the retracted position, and the three-way valve 19 is switched to form a closed path.
Then, water is supplied to the washing / dewatering tub 1, a detergent is put in, the laundry is put in, and the pulsator 6 is rotated to wash the laundry. At this time, the convex portion 1c of the washing and dewatering tub 1 pushes and washes the laundry that rotates while riding on the water flow.

Rinsing can be performed by rotating the pulsator 6 while supplying water to the washing and dewatering tub 1. At this time, the water and the detergent in the washing and dewatering tub 1 are discharged into the drain holes 1a.
Flows into the annular drain pipe 7 through the annular drain port 1b, and is discharged to the outside through the drain pipe 8.

Dehydration after rinsing is performed by switching the three-way valve to form a drainage channel, stopping water supply and the pulsator 6, and rotating the washing / dehydrating tub 1 at a high speed (for example, 1000 revolutions / minute). Can be.

At this time, the water in the washing and dewatering tub 1 and the water contained in the laundry move upward along the inclined inner surface of the same tub 1 by centrifugal force, and are transferred from the drain hole 1 a to the annular drain pipe 7. At the same time, it flows in and is discharged outside through the drain pipe 8,
It is also discharged from drains. Washing water and rinsing water accumulated in the cylindrical rotating shaft 6a and the first branch pipe 18a are discharged from the drainage channel. The convex portion 1c prevents the laundry from moving upward in the dehydration process, and enhances the dehydration efficiency. In the dehydration process, the laundry in the dehydration washing tub 1 is attached to the inner wall surface of the dehydration tub 1 and the loosening member 9 by centrifugal force during dehydration and is attracted in an annular manner, thereby forming an air passage in the center of the laundry. You.

To dry the laundry, cover the lid 20 of the washing machine,
The roller 13 is brought to the advanced position, the three-way valve 19 is switched to form an exhaust path, and the washing and dewatering tub 1 is occasionally gently rotated in the direction of arrow R to loosen the dehydrated laundry by the loosening member 9. Then, the dehumidifier 17 is operated while loosening.

At this time, the air containing moisture in the outer case 4 and the washing / dewatering tub 1 is sucked by the dehumidifier 17 to be dehumidified. The dehumidified and dried air passes through the exhaust passage, the cylindrical rotary shaft 6a and the hole 6c thereof, and passes through the ventilation passage formed between the laundry. In this process, the dried air absorbs the moisture of the laundry, enters the outer case 4 and enters the dehumidifier 17. Hereinafter, this cycle is repeated, and the laundry is dried.

(Embodiment 2) A washing machine according to Embodiment 2 includes a pulsator 6 rotating on a cylindrical rotary shaft 6a in Embodiment 1 and a three-way branch in a washing tub 21 of a conventional vertical washing machine shown in FIG. It has a configuration in which a pipe 18, a dehumidifier 17, a loosening member 9, and control means for the loosening member 9 are provided. In addition, the drain pipe 27 and the drain valve 28 provided in the water receiving tank 26 of the vertical washing machine shown in FIG. 4 can be left as it is and used as needed.

According to the washing machine of the second embodiment, it is possible to obtain a conventional, that is, a vertical washing machine having a drying function in the washing machine of the first embodiment.

[0053]

As described above, according to the first washing machine, since the above-described configuration is employed, the following effects can be obtained.

(1) Washing and rinsing are performed in the washing / dewatering tub, and dehydration can be performed by utilizing centrifugal force generated by rotation of the tub, so that a conventionally required water receiving tub can be omitted. Further, the seal between the water receiving tub and the washing tub, which is conventionally required, is not required. Therefore, cost can be reduced.

(2) Since no water receiving tub is required, the gap between the washing tub and the water receiving tub in the conventional washing machine is also eliminated. Therefore, the washing water and the rinsing water do not become dead water and are not wasted. Therefore, the time for water supply and drainage can be saved accordingly.

(3) Since no water receiving tank is required, black mold on the outer surface of the washing and dewatering tank does not occur. For this reason, the contamination of the laundry by the black mold is eliminated.

(4) When a plurality of projections are provided on the inner peripheral surface of the washing and dewatering tub, the washing of the laundry can be effectively performed at the time of washing. Movement can be effectively prevented.

(5) Since the dewatered laundry is loosened by the loosening member and the dried air is circulated, the laundry can be effectively dried, and the washing, rinsing, dehydrating and drying are performed consistently. be able to.

Further, according to the second washing machine, since the above-described configuration is employed, the dehydrated laundry is loosened by the loosening member and the dried air is circulated, so that the laundry is effectively dried. This allows washing, rinsing, dewatering and drying to be performed consistently.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a washing machine according to an embodiment.

FIG. 2 is an enlarged perspective view of a loosening member in FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view of a main part of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing dewatering tub 1a Drainage hole 1b Annular drainage port 1c Convex part 2, 6a Cylindrical rotation axis 6 Pulsator 6c Hole 7 Annular drainage pipe 7a Annular opening part 8 Drainage pipe 9 Relaxing member 10 Rotary axis 11 Spring 12 Push rod 13 Roller 14 Arm 15 Geared motor 16 Stopper 17 Dehumidifier 18 Three-way branch pipe 19 Three-way valve 20 Lid

[Procedure amendment]

[Submission date] December 10, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Another washing machine provided by the present invention is:
A bottomed cylindrical washing tub having a bottom fixed to a first cylindrical rotating shaft and a pulsator attached to a second cylindrical rotating shaft inserted through the first cylindrical rotating shaft; A water receiving tub arranged coaxially with the tub, a loosening member for loosening dewatered laundry, and a washing tub mounted on the inner wall of the washing tub so as to be able to be pushed out toward the center of the washing tub. And a dehumidifier. The second cylindrical rotary shaft has a hole in an upper side wall thereof that communicates with a washing tub, and a coaxial and relatively rotatable lower end thereof. It is connected and has an exhaust path that guides dry air from the dehumidifier to the washing tub by switching the three-way valve, a drain path that discharges washing water from the water receiving tank to the outside, and a closed path that stops outflow of washing water from the water receiving tank. (Hereinafter referred to as a second washing machine). U).

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The second washing machine according to the invention, at the time of washing, first, loosening member to position the extrusion position to the retracted position, the form <br/> the closure path by switching the three-way valve of the three-way branch pipe At the same time, close the drain valve of the water receiving tank . Next, water is supplied to the washing tub, detergent is added, laundry is put in, and the pulsator is rotated.

Claims (2)

[Claims] A first cylindrical rotating shaft having a bottom fixed to the first cylindrical rotating shaft;
A bottomed cylindrical washing and dewatering tub having a pulsator attached to a second cylindrical rotating shaft inserted through the cylindrical rotating shaft, an annular drainage pipe coaxially disposed on the upper outside of the washing and dewatering tub, A loosening member for loosening the dewatered laundry, which is attached to the inner wall surface of the water tub so that it can be pushed out to the center of the water tub,
A dehumidifier, the annular drain pipe has an annular opening in the inner wall, the washing and dewatering tub has a plurality of drain holes at positions facing the annular opening, and has a diameter from the bottom to the top. The second cylindrical rotating shaft has a hole on the upper side wall thereof communicating with the washing and dewatering tub. The second cylindrical rotating shaft is coaxially and relatively rotatably connected to the lower end thereof, and is dehumidified by switching a three-way valve. An exhaust passage that guides dry air from the machine to the washing and dewatering tub, a drainage passage that discharges washing water from the washing and dewatering tub to the outside, and a three-way branch pipe that forms a closed passage that stops the outflow of washing water from the washing and dewatering tub. A washing machine comprising: a washing machine; 2. The method according to claim 1, further comprising: fixing a bottom portion to the first cylindrical rotation shaft;
A bottomed cylindrical washing tub having a pulsator attached to a second cylindrical rotating shaft inserted through the cylindrical rotating shaft, and a water receiving tub provided at a predetermined interval outside the washing tub and arranged coaxially therewith. ,
A dehumidifier, comprising: a loosening member for loosening dewatered laundry, which is attached to an inner wall surface of the washing tub so as to be able to be pushed out to the center side of the washing tub, an extrusion means for pushing the loosening member toward the center of the washing tub, and a dehumidifier. The second cylindrical rotating shaft has an upper side wall,
A hole communicating with the water receiving tub, coaxially and relatively rotatably connected to the lower end thereof, an exhaust path for guiding dry air from the dehumidifier to the washing tub by switching a three-way valve, and washing water in the water receiving tub outside. A washing machine comprising: a drainage channel for discharging water to a drainage pipe; and a three-way branch pipe forming a closed path for stopping outflow of washing water from a water receiving tank.