JPH07222894A - Drum type full automatic washing machine - Google Patents

Abstract

PURPOSE:To eliminate a need for spinning by the rotation of a drum at high speeds, and thereby lower vibration and noise caused by spinning. CONSTITUTION:Numbers of water through holes 7 are provided for the outer circumferential surface of a drum 2. A suction body 8 is communicated with a suction pump 37 by way of a suction pipe 35 and a drain tank 36, and the suction pump 37 is communicated with a water tank 3 through a circulation path 41. Washing S is stuck on the inner circumferential surface of the drum 2 faced to the suction body 8. When the suction pump 37 is driven, the suction body 8 becomes negative in pressure, and moisture is sucked out of the washing together with air within the drum 2. Moisture is separated from air sucked in by the drain tank 36. Air is warmed up through air-cooling for the suction pump 37 so as to be blown off after it has flowed through the circulation path 41. Warm air thus produced accelerates evaporation of moisture out of the washing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type fully automatic washing machine in which laundry is housed in a drum which is rotationally driven about a horizontal axis, is washed and rinsed, and is dehydrated without rotating the drum at a high speed.

[0002]

2. Description of the Related Art In a conventional laundry dehydrator, a method is generally known in which water is drained after washing and rinsing, and then the laundry and water are separated by centrifugal dehydration. In addition to this, a dehydration method using a vacuum pump and a heater is disclosed in JP-A-57-206.
No. 491 or Japanese Patent Laid-Open No. 57-125800.

In the former method, after washing, the laundry is dehydrated by a centrifugal separation method as usual, and subsequently, the lid and the drainage pipe in the water tank are all closed and sealed, and then the air in the water tank is removed from the water tank by a vacuum pump. To discharge. As a result, when the atmospheric pressure in the water tub drops, water is evaporated from the laundry and the water is discharged from the water tub together with the air. Further, when the laundry is heated by the heater, the saturated vapor pressure in the vicinity of the laundry increases, so that the evaporation of water in the laundry becomes active.

In the latter, the laundry is folded and folded in water, placed on a stand in a case, dehydrated, and sucked by a suction device while sending warm air to vaporize and suck water. dry.

[0005]

However, in the former case, since the heat of vaporization is carried away when water evaporates, the temperature of the water remaining in the laundry may drop and the laundry may freeze, causing damage to the fabric of the laundry. It may happen. In addition, since the structure is such that the pressure is reduced by using a vacuum pump, the washing machine is made to be robust, which imposes a heavy burden in terms of cost and structure. In addition, since a heating machine must be used, safety measures are required, which further increases the cost and structural burden.

Moreover, since centrifugal dewatering is performed first, the rotation speed is low at 55 rpm or less in the washing or rinsing process, but the high speed rotation is 600 to 1000 rpm in the dewatering process. In the acceleration stage from low speed to high speed, the laundry is not evenly distributed on the inner wall of the drum, causing eccentric rotation, and the water tub vibrates greatly. The vibration of the water tank is transmitted to the main body of the washing machine through the spring body and the cushioning body, which causes vibration disturbance and fatigue damage of the main body of the washing machine. Further, the vibrations are also transmitted to the floor surface where the washing machine is installed, which causes a large vibration of the floor surface, which gives a user an unpleasant sensation and a serious problem in terms of noise.

When the latter is applied to a fully automatic washing machine, it takes time and effort to fold the laundry, and it cannot be said to be fully automatic. Therefore, it cannot be applied to a fully automatic washing machine. Moreover, there is a problem in that the air passage resistance varies depending on the type and thickness of the laundry, hot air cannot pass through the entire laundry uniformly, and variations in dehydration occur.

In view of the above, an object of the present invention is to provide a fully automatic drum type washing machine capable of eliminating the dehydration due to the rotation of the drum and reducing the vibration and noise generated during the dehydration. Another object of the present invention is to provide a fully-automatic drum type washing machine that can cleanly dehydrate laundry and improve the dehydration efficiency to shorten the required washing time.

[0009]

As shown in FIG. 1, the problem solving means according to the present invention is applied to a drum 2 having a plurality of water passage holes 7 which are internally supported rotatably around a horizontal shaft 12 in a water tank 3. , A suction device 8 which covers the outer peripheral wall of the drum 2 and communicates with the water passage hole 7 of the drum 2, and a suction device which sucks the moisture of the laundry S attached to the inner peripheral wall of the drum 2 through the suction member 8 to dehydrate it. 9 and 9 are provided. In addition, as shown in FIG.
The water passage hole 61 of the drum 60 may have a honeycomb shape, and the water passage hole 61 is provided with an opening / closing valve 62 that opens and closes according to the suction force of the suction device 9.

The suction device 9 comprises a suction pump 37, a drainage tank 36, and a suction valve 38 that opens and closes between the drainage tank 36 and the suction body 8, and the suction pump 37 is connected to a circulation path 41. , The air is sucked into the drum 2 again by the suction device 9.
Circulate inside. The drainage tank 36 is provided with a tank valve 39 that opens and closes according to the operation of the suction device 9. Further, a suction area adjusting device 49 for adjusting the suction force by varying the coating area of the suction body 8 with respect to the outer peripheral wall of the drum 2 is provided.

A pressure sensor for detecting the suction pressure from the suction body 8 and a dehydration sensor 43 for detecting the amount of dehydration suctioned and dehydrated by the suction device 9 are provided, and the drum 2 of the drum 2 is output based on the output signals of the respective sensors. The drive device 4, the suction device 9, and the suction area adjustment device 49 are each driven and controlled.

That is, when the suction pressure at the start of dehydration is smaller than a predetermined value, the drum 2 is rotated to move the laundry S until the suction pressure exceeds the predetermined value.
Suction pressure control for driving the suction area adjusting device 49 according to the dehydration amount, laundry movement control during dehydration for rotating the drum 2 to move the laundry S when the dehydration amount decreases, and when the suction pressure exceeds a predetermined value. Suction load control for determining that the suction body 8 is not communicating with the water passage hole 7 of the drum 2 and stopping the suction device 9, and a suction area for reducing the covering area of the suction body 8 when the suction pressure is smaller than a predetermined value. The suction position control for driving the adjusting device 49 and the dehydration rotation control for simultaneously driving the suction device 9 and the driving device 4 are performed.

In addition, setting control for setting and operating the operating conditions of the suction device 9 and the driving device 4 of the drum according to the material or amount of the laundry S, the suction force of the suction device 9 with the progress of dehydration or Suction device 9 that controls the dehydration operation in which the rotation of drum 2 is variable, while supplying water during washing and rinsing
For controlling the suction and drainage for driving the drum, the drum stop control for stopping the drum 2 at the reference position, the laundry positioning control for rotating the drum 2 in the forward and reverse directions to position the laundry S at a predetermined position during the drainage of the rinse, and the injection before the suction and dehydration. The laundry close contact control for injecting water onto the laundry S by the device 73, and the suction device 9 after completion of dehydration
Is performed and the drum 2 is rotated to perform laundry loosening control.

[0014]

In the above means for solving problems, in the washing and rinsing process, the suction device 9 is driven while water is being supplied to drain water from the suction body 8. The stains peeled off from the laundry S are quickly drained, which prevents the stains from reattaching to the laundry S. Then, before draining the rinse water, the suction body 8
In order to avoid an obstacle such as a baffle in the drum 2 that hinders the suction of the drum 2, the drum 2 is stopped at the reference position, and then the drum 2 is rotated in the forward and reverse directions within a certain angle range to wash the laundry S. Collect in the lower part of 2 and close the gap of the laundry S. After draining, high-pressure water is injected from the injection device 73 into the laundry S.
Is sprayed onto the drum 2 and the laundry S is brought into close contact with the drum 2 in a uniformly spread state. This improves the efficiency of dehydration.

When the suction device 9 is driven, a pressure difference occurs between the laundry S and the inside of the drum 2 which are separated by the water passage 7. When the degree of vacuum rises, the film of water that has penetrated into the laundry S loses the pressure and is sucked into the suction body 8 together with the air. Here, when this suction pressure is detected and the value is low, the laundry S does not match the position of the suction body 8, so the drum 2
The laundry S is moved by rotating the
Suction and dehydration is performed after completely covering.

When the sucked air reaches the drainage tank 36, the water and the air are separated by the difference in weight, the water is stored in the drainage tank 36, and the air becomes warm air while cooling the suction device 9. , Is again blown into the water tank 3. When the warm air passes through the laundry S, it promotes the evaporation of water and accelerates the drying of the laundry S.

The water sucked from the laundry S is a drainage sensor 4
When the dehydration amount is constantly detected by 3 and the dehydration amount decreases, it is determined that the suctioned laundry S has the dehydration limit at the same place, and the suction device 9 is stopped and the drum 2 is rotated. Then, the laundry S moves, and the new surface of the laundry S comes to a position corresponding to the suction body 8. Then, suction dehydration is performed again. In the case of performing dehydration while rotating the drum 2, the laundry S is constantly stirred, and thus the above operation is unnecessary.

When the end stage of dehydration is approached, the output of the suction device 9 is gradually lowered, or, if the drum 2 is being rotated, the rotation speed of the drum 2 is gradually decreased.
The laundry S can be gently dehydrated. Alternatively, by reducing the covered area of the suction body 8 and reducing the load due to the loss of water in the laundry S, the suction pressure is reduced, and on the contrary, the air volume is increased, and an appropriate amount of air dries the laundry S. While passing. When the spin-drying is completed, the suction device 9 is stopped and the drum 2 is rotated to loosen the entangled laundry S so that the laundry S can be easily taken out.

By the way, since the dehydration varies depending on the material and amount of the laundry S, the suction force and the rotation speed of the drum are set, and the rotation and stop intervals of the drum are adjusted according to the material and the amount. , Perform gentle dehydration suitable for the laundry S. Further, the suction force is reduced or the rotational speed of the drum is reduced according to the progress of dehydration, so that the laundry S is dehydrated without being damaged.

[0020]

【Example】

(First Embodiment) As shown in FIG. 1, a fully automatic drum type washing machine according to the present embodiment has a drum body 2 in which a laundry S is housed and rotated in a washing machine main body 1, and the drum 2 is surrounded. Water tank 3 rotatably supported, drive device 4 for rotating drum 2 forward and backward, water supply device 5 and water tank 3 for supplying water into water tank 3.
A drainage device 6 for draining the water inside, a suction body 8 that covers the outer peripheral wall of the drum 2 and communicates with the water passage hole 7 of the drum 2, and sucks the moisture of the laundry S attached to the inner peripheral wall of the drum 2. A suction device 9 for suctioning through the body 8 and dehydrating is provided.

The drum 2 has a large number of water passage holes 7 formed in the peripheral wall thereof, and an opening 10 through which the laundry S is put in and taken out is formed in the front surface. Further, a rotation receiving portion 11 which is in sliding contact with the water tank 3 is provided in the center of the rear surface of the drum 2, and a horizontal shaft 12 is fixed to the rotation receiving portion 11. The horizontal shaft 12 penetrates the central portion of the water tank 3 and projects outward, and a drum pulley 13 is fixed to the tip end side of the horizontal shaft 12. Further, a drum driving motor 14 capable of rotating in the forward and reverse directions is attached to the lower surface of the water tank 3, and a drive pulley 15 of the motor shaft and the drum pulley 13 are connected by a belt 16. These horizontal shaft 12, drum pulley 13 and drum driving motor 1
The drive device 4 is composed of 4 and the like. The drive device 4 has a brake mechanism for stopping the rotation of the drum 2, and is configured to apply a braking force directly to the drum 2 or a pulley.

The water tub 3 has a drum 2 and a drive unit 4 and is housed in the washing machine main body 1, and the upper surface of the water tub 3 is spring 20 to absorb vibrations.
A damper 21 is provided between the lower surface of the water tub 3 and the bottom surface of the washing machine body 1 to hold the water tub 3 and damp vibrations. Further, weights 22 are attached to the upper surface and the front surface of the water tank 3 to reduce vibrations when the drum rotates. Further, a plurality of installation legs 23 are provided on the bottom surface of the washing machine body 1 to block the conduction of vibration to the floor and the like.

On the front surface of the water tub 3, a laundry entry port 24 that faces the opening 10 of the drum 2 is projectingly provided, and the washing machine body 1
A sealing lid 25 that opens and closes the input port 24 is attached to be openable and closable. In addition, a drainage port is formed on the lower surface of the water tank 3,
A drainage device 6 is provided. The drainage device 6 includes a drainage pipe 26 connected to a drainage outlet and a drainage valve 27 interposed in the drainage pipe 26, and a drainage hose 28 led to the outside of the washing machine body 1 is connected to the drainage pipe 26. Has been done.
A water supply port is formed on the upper surface of the water tank 3, and a water supply device 5 is arranged therein. The water supply device 5 includes a water supply pipe 29 connected to a water supply port, and a water supply valve 30 inserted in the water supply pipe 29, and the water supply pipe 29 is connected to a water supply or the like.
In addition, a container 31 containing a detergent, a softening agent, and the like is inserted in the middle of the water supply pipe 29 so that the detergent can be supplied together with the water supply.

As shown in FIGS. 1 and 2, the suction body 8 extends in the axial direction so as to surround a part of the lower surface of the drum 2.
It is composed of a single flat plate 32 and a connection pipe 33 connected to one end of both flat plates 32 and penetrating the water tank 3 and protruding to the outside. The connection pipe 33 is expandable and contractable. And the flat plate 3
At the other end of 2, the sealing material 34 is attached so as to be in close contact with the drum 2.
Is attached, and the outer peripheral wall of the drum 2 can be hermetically covered.

The suction device 9 includes a suction pipe 35 connected to the connection pipe 33 of the suction body 8, a drainage tank 36 arranged below the suction pipe 35, and a suction pump 37 communicating with the drainage tank 36. The suction pipe 38 is provided in the suction pipe 35. The drain port of the drainage tank 36 is connected to the drainage pipe 26 via a tank valve 39. In the drainage tank 36, a water level float 40 and a water level detection switch that is turned on and off by vertical movement of the water level float 40 are provided to prevent the stored water from overflowing, and the water level float 40 floats up and down. The switch operates to open the tank valve 39.

Further, a circulation path 41 consisting of a circulation pipe is connected to the exhaust side of the suction pump 37, and the circulation path 41 is the water tank 3.
An intake valve 42 is provided in the circulation path 41, which is connected to an intake port formed in the upper part. As a result, the air sucked from the drum 2 by the suction pump 37 is circulated along the circulation path from the suction body 8, the suction pipe 35, the drain tank 36 to the water tank 3 via the circulation path 41.

A drainage sensor 43 for detecting the amount of water passing through the suction pipe 35 is provided downstream of the suction valve 38 of the suction pipe 35. The drainage sensor 43 is an electromagnetic flowmeter, an ultrasonic flowmeter, or an oval type. Positive displacement type flow meters such as rotary vane type and piston type are used.

Further, an air hole 44 for taking in air from the outside is formed between the suction valve 38 of the suction pipe 35 and the drainage sensor 43, and a lid 45 for opening and closing the air hole 44 is provided. The lid 45 is attached to one side of an L-shaped swinging piece 47 which is rotatably supported by the washing machine body 1 around a shaft 46. The lid 45 moves to the air hole 44 with respect to the suction pipe 35 in accordance with the flow of air sucked from the air hole 44 by the negative pressure in the suction pipe 35, and serves as a pressure sensor.

In order to adjust the suction force by varying the covering area of the suction body 8 with respect to the outer peripheral wall of the drum 2 according to the movement of the lid 45, the flat plate 32 of the suction body 8 is arranged along the outer peripheral wall of the drum 2. The link rod 48 is connected to the other side of the swing piece 47. Link rod 48
Penetrates while being sealed to the water tank 3,
It is branched into two parts and the ends thereof are rotatably attached to the flat plate 32. As a result, a suction area adjustment device 49 that changes the covered area of the flat plate 32 with respect to the drum 2 according to the suction force is configured. The air holes 44 may be formed in the connection pipe 33 of the suction body 8.

The motor 14, the suction pump 37, the drain valve 27, the water supply valve 30, the suction valve 38, the intake valve 42, and the tank valve 39 are driven and controlled by a controller 50 composed of a microcomputer. The control device 50 is disposed on the upper portion of the washing machine main body 1, and performs washing and rinsing according to input from operation keys of an operation panel provided on the outer surface of the washing machine main body 1 and output signals of various sensors such as the drainage sensor 43. , Perform each process of dehydration.

The control unit 50 has a laundry discrimination function for determining the weight and cloth quality of the laundry S from the initial weight of the laundry S and the weight after water absorption, and the water supply amount and the laundry based on the determination result. In addition to the functions that a normal fully automatic washing machine has, such as the operation setting function for setting each operating condition of rinsing and dehydration, the following functions are provided. That is, the suction pressure by the suction pump 37 is changed based on the determination result of the laundry S, for example, the suction pressure is increased for cotton, and the suction pressure is decreased for silk. The suction pressure control function to reduce the suction pressure to reduce the covered area of the suction body 8 as the dehydrated amount decreases, and when the dehydrated amount decreases, the suction pump 37 is temporarily stopped and then the drum 2 is rotated to wash. This is a laundry movement control function at the time of dehydration for moving the article S.

Here, as a method for discriminating the laundry, when the laundry S is first put in the drum 2 and the motor 14 is driven to rotate the drum 2 and then stop, the drum 2
Due to the inertia of the drum 2, the drum 2 does not stop instantaneously and continues to rotate for a short time. Therefore, the motor 14 also rotates and an electromotive force is generated in the electrode terminal portion of the motor 14. Since this electromotive force changes depending on the weight of the drum 2 and the laundry S, the initial weight X of the laundry S can be detected by measuring this electromotive force. Next, after water is drained and water is supplied to the laundry S to be absorbed, the weight Y of the absorbed laundry S is detected in the same manner as above. Then, from the weight Y and the initial weight X of the absorbed laundry S, the water absorption Z of the laundry S is calculated by the following formula.
To calculate. That is, this represents the material of the laundry S. For example, water absorption is large for cotton and small for silk.

Z = (Y-X) / X In the above construction, the washing and rinsing steps are the same as those in the conventional fully automatic washing machine, and therefore the dehydration step will be described. When the rinsing process is over, the drain valve 27 is opened,
Water is drained from the aquarium 3. The laundry S stored in the drum 2 sticks to the inner peripheral wall in a state of being spread to the lower portion of the drum 2 by drainage. Then, the dehydration process is started under the dehydration operation condition set by the determination result of the laundry S.

First, the motor 14 is driven to rotate the drum 2 at a low speed for several revolutions so that the laundry S in the drum 2 is loosened and uniformly spread. After stopping the motor 14, the drain valve 27
The tank valve 39 is closed to keep the water tank 3 in a sealed state, the intake valve 42 and the suction valve 38 are opened, and the suction pump 37 is driven. Due to the suction of the suction pump 37, a negative pressure force is applied to the suction body 8 through the drainage tank 36 and the suction pipe 35. Here, the flat plate 32 of the suction body 8 is not normally in contact with the drum 2 and is separated at a certain interval, but the negative pressure in the suction pipe 35 draws the outside air from the air hole 44, and the lid is closed. A negative pressure force is applied to 45. The lid 45 is attracted to the suction pipe 35, and the air hole 44 is closed. As a result, the swing piece 47 rotates clockwise, the link rod 48 is pushed up, and the flat plate 32 is brought into close contact with the outer peripheral wall of the drum 2.

The degree of vacuum is increased in the suction body 8, and a pressure difference is generated between the laundry S and the drum 2 which are separated by the water passage hole 7.
When the degree of vacuum rises, the film of water that has penetrated into the laundry S loses the pressure and is sucked into the suction body 8 together with the air. The air containing the moisture reaches the drainage tank 36 from the suction body 8 through the suction pipe 35. At this time, water and air are separated by the difference in weight, the water is stored in the drainage tank 36, and the air is sucked into the suction pump 37. The air taken into the suction pump 37 becomes warm air by passing through the heat-generating suction pump 37 and being cooled by air, rises in the circulation path 41, passes through the intake valve 42, and is blown out into the water tank 3. When the warm air passes through the laundry S, it promotes the evaporation of water and accelerates the drying of the laundry S. Moreover, the sucked air becomes hot and humid, and the drain tank 36
However, since the temperature inside the drainage tank 36 is lower than the ambient temperature due to the water separated from the laundry S, the hot and humid air is dewed in the drainage tank 36 to remove the moisture, and is dried air. And is circulated again.

When the water sucked from the laundry S passes through the suction pipe 35, the drainage sensor 43 constantly detects the dehydration amount and outputs the detected value to the controller 50. When the amount of water dehydrated from the laundry S decreases and becomes less than the reference value, it is determined that the suctioned laundry S is at the limit of dehydration at the same place, and the suction pump 37 is stopped.
The suction body 8 is separated from the drum 2, and the motor 14 is driven to rotate the drum 2. Then, the laundry S moves, and the new surface of the laundry S comes to a position corresponding to the suction body 8. Then, the suction pump 37 is driven again to perform suction dehydration.

When the end stage of dehydration is approached, the amount of air passing through the laundry S increases as the dehydration amount decreases,
Negative pressure decreases. Along with this, the suction pressure decreases, so that the lid 45 cannot seal the air hole 44, and is slightly separated from the suction pipe 35. Then, the link rod 48 descends and the flat plate 32 tries to separate from the drum 2.
Since the negative pressure is still acting on 2, the connecting pipe 33 contracts while the sealing material 34 is in close contact with the drum 2 and the flat plate 32
Slide on the outer peripheral walls of the drum 2 toward each other, and the area covered by the suction body 8 is reduced. Therefore, the suction pressure is reduced by reducing the load caused by the loss of water in the laundry S,
On the contrary, the air volume increases, and an appropriate amount of air passes while drying the laundry S.

By performing such suction dewatering, it is not necessary to rotate the drum 2 at a high speed during dewatering, the water tank 3 does not vibrate greatly, and at the same time, mechanical noise can be minimized. , Does not cause user discomfort. Therefore, anti-vibration measures are not required, it is not necessary to make the washing machine main body robust, and simplification of the reinforcing material and the vibration damping mechanism enables significant cost reduction.

Further, by monitoring the amount of dewatering sucked from the laundry, it is possible to know the limit of dewatering of the sucked laundry at the same place. Therefore, the rotation of the drum 2 moves the laundry and the laundry is moved. It is possible to perform suction dehydration of the non-dehydrated part of the product, which allows uniform dehydration. Moreover, since it is possible to selectively dehydrate only the places that have not been dehydrated, it is possible to greatly contribute to shortening the dehydration time.

Further, since the sucked air is circulated in the water tub 3 through the suction pump 37, the suction pump 37 can be cooled, and even if a separate heating device is not provided, the warm air generated here allows the entire laundry to be washed. Since the temperature can be raised and evaporation is promoted, the dehydration time can be shortened. Moreover, it also contributes to the improvement of the dehydration rate.

A large amount of water is separated in the initial stage of dehydration and a small amount of water is sucked in in the final stage, but since the coating area of the suction body 8 is reduced according to the dehydration amount, In the stage, the amount of air passing through the laundry and the negative pressure can be utilized to the maximum, and efficient dewatering can be performed. In other words, the suction pump 37 can be driven at the maximum work rate, the negative pressure and the air volume are appropriate on the maximum work rate, and the final stage of the laundry is sucked with an appropriate negative pressure and washed with the appropriate air volume. You can dry things. As described above, in the final stage, by reducing the load due to the loss of water in the laundry, the suction pressure is decreased and the air volume is increased, so that the dehydration rate of the laundry can be improved and the dehydration time can be shortened.

(Second Embodiment) In the drum type fully automatic washing machine of the present embodiment, as shown in FIG. 3, the peripheral wall of the drum 60 is formed in a honeycomb shape or a mesh shape, and these holes serve as water passage holes 61. ing. Further, as shown in FIG. 5, an opening / closing valve 62 made of rubber is provided in all or part of the water passage hole 61 so as to open and close toward the inner side of the drum 60. The valve 62 closes the water passage hole 61 by the wind that flows from the inside to the outside of the drum 60.

On the outer peripheral wall of the lower portion of the drum 60, a connecting port 64 of a suction body 63 as shown in FIG. 4 is provided in a slender contact with the axial direction, and the suction body 63 is molded from rubber, and the drum 60 is formed. Being pressed against. Therefore, the vibration of the drum 2 can be followed, and even if the drum 60 rotates, it is always in sliding contact. A pressure sensor 65 of strain gauge type or operating capacitance type is disposed between the drainage tank 36 and the suction pump 37. The other structure is the same as that of the first embodiment.

In addition to the normal function, the control device 66 in this embodiment has a suction / drainage control function for driving the suction pump 37 while supplying water in the washing and rinsing process, and a suction while rotating the drum 60 at a low speed in the dehydration process. A dehydration rotation control function for performing dehydration, and a type drum rotation control function for changing the rotation speed of the drum 60 according to the judgment result of the laundry S, for example, increasing the rotation speed for cotton and decreasing the rotation speed for silk. When the suction pressure at the start of dehydration is smaller than the lower limit predetermined value, the drum 60 is kept until the suction pressure exceeds the lower limit predetermined value.
Is provided with a laundry movement control function for rotating the laundry S in the normal and reverse directions to move the laundry S and a laundry loosening control function for stopping the suction pump 37 and rotating the drum 60 after the completion of the dehydration.

In the above-described structure, in the washing and rinsing process, the suction pump 37 is driven while supplying water to the suction member 63.
The water is drained to the drainage tank 36 through the suction pipe 35. At this time, the tank valve 39 is opened so that the drainage tank 36 is prevented from having too much water. Laundry S
The dirt peeled off from the cloth is quickly drained, whereby the dirt is prevented from reattaching to the laundry S, a clean washing finish is possible, and the washing time can be shortened.

When the rinsing process is completed, drainage is performed and then the drainage valve 27 and the water supply valve 30 are closed. Then, the suction valve 38 and the intake valve 42 are opened, the motor 14 is driven, and the suction pump 37 is driven while rotating the drum 60. At this time, in the area where the connecting port 64 of the suction body 63 covers the drum 60, when the laundry S is placed on the inner peripheral wall of the drum 60 as shown in FIG.
The on-off valve 62 remains open as it is disturbed by. However, in the place where the laundry S is not placed, air is sucked from the inside of the drum 60 through the suction body 63, so that the opening / closing valve 62 is closed. In the region where the connecting port 64 of the suction body 63 does not cover the drum 60, air flows from the outside to the inside of the drum 60, so the on-off valve 62 remains open.

Then, as shown in FIG. 6A, the drum 60
When the laundry S is sucked with the inner peripheral wall thereof being sucked, the suction pressure detected by the pressure sensor 65 has a low value.
Then, by driving the motor 14 in the normal and reverse directions to rotate the drum 60 in the normal and reverse directions, the laundry S is swayed and spread, and the suction body 6 is moved as shown in FIG. 6B.
Three connection ports 64 completely cover the area covered by the drum 60. The above operation is executed until the suction pressure exceeds the lower limit predetermined value, and when the lower limit predetermined value is exceeded, suction dehydration is started under driving conditions according to the type of the laundry S while rotating the drum 60 in one direction. The laundry S is dehydrated gently.

During the dehydration, the laundry S is constantly moved by the low speed rotation of the drum 60, so that the laundry S is uniformly dehydrated. Further, the drum 60 rotates while vibrating, but since the connection port 64 of the suction body 63 has elasticity and is biased toward the drum, the suction force does not separate from the drum 60 and does not involve air from the surroundings. Is maintained. Since the drum 60 is rotated at a low speed, its vibration and noise are not a problem.

When the final stage of dehydration is approached, the amount of dehydration passing through the suction pipe 35 gradually decreases. In response to this, the drum 60 is controlled so as to gradually decrease the number of revolutions, which was initially high. Or suction pump 37
The output of is first increased and then gradually decreased.
It is possible to perform the same control not only on one of the drum 60 and the suction pump 37 but also on both.
By performing such control, the laundry S can be gently dehydrated without damaging the laundry S.

When the dehydration is completed, the suction pump 3
7 is stopped, and the intake valve 42 and the suction valve 38 are closed.
Subsequently, the motor 14 is driven, but forward / reverse reversal drive is performed, and the drum 60 is normally / reversely rotated to loosen the entangled laundry S so that the laundry S can be easily taken out. Finally, the motor 14 is stopped, the sealing lid 25 is opened, and the laundry S is taken out from the drum 60.

As described above, by performing suction dehydration while rotating the drum 60, it is possible to prevent unbalanced dehydration such that the laundry is uniformly stirred and a certain portion of the laundry is suctioned intensively. The laundry can be efficiently dehydrated to shorten the dehydration time. Further, since the water passage hole 61 of the drum 60 is formed in a honeycomb shape and the opening / closing valve 62 is provided in the water passage hole 61, the opening / closing valve 62 is closed in the place where the laundry is not present, which is effective in the place where the laundry is present. The suction force acts to improve the dehydration efficiency.

Further, by detecting the suction pressure with the pressure sensor 65 before dehydration, it is possible to judge the state of the laundry with respect to the suction body 63, and if the laundry is in the suction body 63.
If the suction / dehydration is not performed when the connection port 64 of No. 1 is not covered, the efficiency is only inferior, and the above state can be eliminated by rotating the drum 60. It can be put into a state and the dehydration efficiency can be improved.

(Third Embodiment) In the washing machine of this embodiment, as shown in FIGS. 7 and 8, the tumbling is performed in which the laundry S is washed while being scraped up and dropped in the drum 60 having the honeycomb-shaped water passage holes 61. In order to perform the above, a plurality of baffles 70 are provided so as to project along the axial direction on the inner peripheral surface of the drum 60. A position detection sensor 71 for detecting the rotational position of the drum 60 and a speed sensor for detecting the rotational speed of the drum 60 are provided.

The position detection sensor 71 is attached to the water tank 3 so as to face the object to be detected 72 attached to the outer peripheral surface of the drum 60 at a position corresponding to each baffle 70. As the position detection sensor 71, an optical sensor or a magnetic sensor is used, and in the case of the optical sensor, the material to be detected is attached or embedded on the outer peripheral surface of the drum 60 with a material having good light reflectivity.
In the case of a magnetic sensor, a magnetic material is used as the detected object,
Similarly, it is attached or embedded on the outer peripheral surface of the drum 60. It should be noted that the detected body 72 is not largely projected from the drum surface so as not to be caught by the suction body 63 when the drum 60 rotates. As a result, the position of the baffle 70 can be directly detected. Further, the object to be detected may be attached to the rear surface of the drum 60 or the drum pulley 13 and the position detection sensor may be arranged so as to face the object.

The speed sensor is an electromagnetic sensor which directly detects the rotation speed of the motor shaft of the drum driving motor 14, or the position detection sensor 71 is used to detect the rotation speed from the detection signal of the position detection sensor 71. It may be calculated.

An injection device 73 for injecting water toward the inside of the drum 60 is provided above the water tank 3, and a plurality of injection nozzles 74 mounted through the water tank 3 and water supply to the injection nozzles 74. Water guide pipe 75 for guiding water from the pipe 29
And an injection water supply valve 76 interposed in the water conduit 75. The jet nozzle 74 is directed toward the center of the drum 60, and the jetted high-pressure water passes through the water passage holes 61 of the drum 60 and reaches the lower portion of the drum 60. In addition,
The other structure is the same as that of the second embodiment.

Further, a drain port is formed on the bottom surface of the drainage tank 36 of the suction device 9, and a tank valve 77 is provided therein so as to be openable and closable. The tank valve 77 is made by pressing an elastic material against the drain port from the inside of the drainage tank 36 with a spring, and is opened / closed by turning on / off a solenoid or the like.

Then, the control device 78 in the present embodiment.
In addition to its normal function, the drum 60 prevents the baffle 70 from coming near the upper part of the suction body 63 based on the detection signals of the position detection sensor 71 and the speed sensor before draining the rinse water in the drum 60 in the rinsing stroke. Stop function for stopping the washing machine at the reference position, a laundry positioning function for reciprocating the drum 60 in the forward and reverse directions within a range of a certain angle or less, and a jetting device 73 after the rinsing process to operate to wash the laundry S by water pressure. A function of adhering the laundry to 60 and a dehydration operation control function of driving only the suction device 9 with the rotation of the drum 60 stopped at the start of the dehydration and then performing the suction by the suction device 9 while rotating the drum 60 at the same time. And a dehydration condition setting function for automatically setting the stop and rotation times of the drum 60 according to the material and amount of the laundry S, and the operation of the suction device 9 And a tank draining function for opening and closing the tank valve 77 at a predetermined timing.

When the drum 60 is rotated during dewatering, the laundry S is rotated at 60 to 70 rpm in the case of a drum having a diameter of 45 cm so that the laundry S does not stick to the inner peripheral wall of the drum 60 due to centrifugal force and fall. Let As a result, the laundry S can be maintained in a state where the laundry S is spread evenly and thinly on the inner peripheral wall of the drum 60, and the efficiency of dehydration by suction is improved. Moreover, since the drum 60 is rotating at a low speed,
The vibration and noise are not a problem.

As shown in Table 1, the dewatering condition setting function shows that the ratio of the stationary time increases as the amount of laundry increases and as the water absorption increases, based on the result of detecting and determining the material and amount of the laundry S at the start of washing. Is increased to change the rotation and stop time of the drum 60. For example, when the laundry S has a large amount and the water absorption is small, the time ratio of stationary to rotating is 6,
Turns to 4. If the dehydration time is set to, for example, 5 minutes, the suction device 9 is operated for dehydration for the initial 3 minutes while the drum 60 is stationary, and the suction device is rotated while rotating the drum 60 for the remaining 2 minutes. 9 is operated to perform dehydration. That is, since the suction force can be exerted more strongly when the drum 60 is stationary and the suction and dehydration are performed than when the drum 60 is rotated and the suction and dehydration is performed, the stationary state is increased as the amount of laundry is increased and the water absorption is increased. The ratio of time is increasing.

[0061]

[Table 1]

In the above structure, the washing and rinsing process is the same as that of the conventional fully automatic washing machine, and therefore, the final stage of the rinsing process will be described. Before the final rinsing in the rinsing process is finished and the rinsing water is discharged from the drum, the rotation speed of the drum 60 is detected by the speed sensor, and the motor 14 is stopped based on the drum position detected by the position detection sensor 71. Or brake the pulleys,
As shown in FIG. 8, the baffle 70 of the drum 60 is attached to the suction body 6.
The drum 60 is stopped at a position not located in the vicinity of the upper part of 3.
Then, the drum 60 is reciprocally rotated in the forward and reverse directions within a range of a rotation angle of 60 degrees or less, and the laundry S is shaken in the rinsing water to collect the laundry S near the suction body 63, and the drum 60 and the laundry are washed. The drain valve 27 is opened and the rinsing water is drained from the drum 60 while adjusting so that no gap is created between S. When all the water is drained, the water supply valve 30 and the water supply valve for injection 76 are opened, water is injected from the injection nozzle 74 provided on the upper part of the water tank 3, and the laundry S is brought into close contact with the inner peripheral wall of the drum 60 by water pressure. Reduce the gap. The laundry S has a connection port 6 of the suction body 63.
The drum 4 is thinly spread and placed on the area of the drum 60 covered.

Then, the dewatering process is started under the dewatering operation conditions set as shown in Table 1 according to the result of discrimination of the laundry S.
First, in the initial stage of dehydration, the drain valve 2 with the drum 60 kept stationary
7 and the tank valve 39 are closed to keep the water tank 3 in a sealed state, the intake valve 42 and the suction valve 38 are opened, and the suction pump 37 is driven. The degree of vacuum is increased in the suction body 63, and a pressure difference is generated between the laundry S and the drum 60 that separate the water passage 61. When the degree of vacuum rises, the film of water that has penetrated into the laundry S loses its pressure and is sucked into the suction body 63 together with air. When this moisture-containing air reaches the drainage tank 36, it is separated into water and air, and the water is removed from the drainage tank 36.
Is stored in the suction pump 37 and the air is sucked into the suction pump 37. The air taken in by the suction pump 37 passes through the suction pump 37 to become warm air, and rises in the circulation path 41 to make the water tank 3
It is blown out inside. This warm air promotes the evaporation of water from the laundry S and accelerates the drying of the laundry S. Moreover,
The sucked air becomes hot and humid and is guided into the drainage tank 36, but since the inside of the drainage tank 36 is lower than the ambient temperature, the hot and humid air is condensed in the drainage tank 36 to remove moisture, and dried. It becomes recycled air and is circulated again.

Next, when the set rest time of the drum 60 elapses, the driving of the motor 14 is started and the drum 60
Is gradually rotated in one direction while rotating, and the laundry S is set according to the material and amount of the laundry S while being rotated at a speed at which the laundry S sticks to the drum 60 due to centrifugal force and does not fall down. Suction dehydration is performed only for the driving time. Although the drum 60 rotates while vibrating during dewatering, since the connection port 64 of the suction body 63 has elasticity and is biased toward the drum, it can follow the vibration of the drum 60 and cannot be separated from the drum 60. The suction force is maintained without entraining air from the surroundings.

By the way, when suction dewatering is performed, water is collected in the drain tank 36. Therefore, when the dehydration process starts, as shown in the time chart of FIG. 9, the driving device 4 of the drum 60 is initially off, the suction device 9 is on, the tank valve 77 is closed, that is, the tank valve 77 is closed and the drum 60 is closed. The suction device 9 is operated in a stationary state to start dehydration. Next, the drum 60 set according to the material and amount of the laundry S
The suction device 9 is turned off and the tank valve 77 is opened when half of the time for dehydration by operating only the suction device 9 in a stationary state is reached, that is, suction is stopped and the tank valve 77 is opened, and the drain tank Drain the water in 36. After a certain time (for example, 15 seconds), the suction device 9 is turned on and the tank valve 7
7 is closed, that is, the tank valve 77 is closed and the suction device 9 is operated to start dehydration again. The suction device 9 is turned off and the tank valve 77 is opened, that is, the suction is stopped and the tank valve 77 is stopped when the time set to operate the suction device 9 to dehydrate the drum 60 is elapsed. Is opened to drain the water in the drainage tank 36. Then, after a certain time (for example, 15 seconds), the driving device 4 for the drum 60 is turned on, the suction device 9 is turned on, the tank valve 77 is closed, that is, the tank valve 77 is closed and the suction dehydration is started while rotating the drum 60. To do. Next, the driving device 4 of the drum 60 is turned off and the suction device 9 is turned off when half of the time for operating the suction device 9 to spin the drum 60, which is set according to the material and amount of the laundry S, is rotated. Off, open tank valve 77,
That is, the rotation and suction of the drum 60 are stopped, the tank valve 77 is opened, and the water in the drain tank 36 is drained. After a certain period of time (for example, 15 seconds), the drive device 4 and the suction device 9 of the drum 60 are turned on, the tank valve 77 is closed, that is, the tank valve 77 is closed and the suction dehydration is restarted while rotating the drum 60. Then, with the drum 60 rotated, the suction device 9
When the time set so as to perform the dewatering is performed, the driving device 4 and the suction device 9 of the drum 60 are turned off, the tank valve 77 is opened, that is, the rotation and suction of the drum 60 are stopped and the tank valve 77 is stopped. Is opened to drain the water in the drainage tank 36. Then, after a certain time (for example, 15 seconds), the tank valve 77 is closed and the dehydration is completed. Therefore, the drainage tank 36 can be prevented from becoming full and overflowing, and the dehydration efficiency is not reduced.

When the dehydration is completed, the intake valve 42 and the suction valve 38 are closed. Finally, the motor 14 is stopped, the sealing lid 25 is opened, and the laundry S is taken out from the drum 60.

As described above, by performing the suction and dehydration while rotating the drum, it is possible to prevent unbalanced dehydration when the laundry is uniformly stirred and a certain portion of the laundry is intensively sucked. , The laundry can be efficiently dehydrated to shorten the dehydration time. Moreover, it is not necessary to rotate the drum at a high speed during dehydration, and vibration and noise can be reduced.

Further, since the baffle does not stop near the upper part of the suction body by stopping the drum at a fixed position, a gap may occur between the laundry when the baffle stops above the suction body. You can solve these problems.
Then, when the rinse water is drained at the end of rinsing, the drum can be rotated forward and backward and shaken to reduce the gap between the laundry and the drum, and the laundry can be collected and arranged in the vicinity of the suction body.
The gap between the laundry and the laundry can be reduced. Further, the jet of high-pressure water brings the laundry into close contact with the drum. As a result, the laundry can be uniformly dehydrated, and the dehydration efficiency can be greatly improved. Further, by rotating the laundry evenly spread over the entire drum at a speed that does not cause the laundry to fall, the laundry is spread more thinly on the drum than when the drum is stationary, which improves the efficiency of dehydration by suction. .

Further, since the passage resistance of air differs depending on the material and amount of the laundry and the time taken for water to drain varies, the dehydration varies, but in the initial stage of dehydration, the drum is not rotated and only the suction is performed to perform dehydration. In the latter half, by performing suction while rotating the drum, the dewatering efficiency can be increased first, and then the laundry can be dewatered uniformly. In particular, by changing the time for which the drum is stationary or the time for rotating the drum depending on the material and amount of the laundry, efficient dehydration suitable for the laundry can be performed.

Although the dehydration condition is set based on both the amount of laundry and the water absorption here, the same effect can be achieved by setting the dehydration condition based on only one of them. In addition, the progress of dehydration is judged based on the detection signals from the drainage sensor and the pressure sensor, or the suction force is reduced or the rotation speed of the drum is reduced with the elapse of the set dehydration time. By adding, it is possible to perform efficient dehydration without damaging the laundry.

(Fourth Embodiment) In the above-described embodiment, in the structure in which the tank valve is closed by pressing the elastic material from above the drain port, that is, from the inside of the drain tank, when the suction device operates, the elastic material of the tank valve is the drain tank. It is pulled inward and air flows into the tank, reducing the efficiency of dehydration by suction. Therefore, in this embodiment, as shown in FIG.
Drainage tank 3 so that 0 is blocked from below drain port 81.
6, which is provided outside of 6, is biased upward by a spring 82, that is, in the direction of the drainage tank 36, and an actuator 84 that is operated by a solenoid 83 is connected, and is vertically moved by turning the solenoid 83 on and off to open and close the drain port 81. It is supposed to do.

A water amount detecting sensor 85 for detecting the amount of water in the drainage tank 36 is provided.
Is composed of a water level float 86 and a capacitance type, magnetic type or optical type displacement detector 88 for detecting the vertical position of a lever 87 connected to the water level float 86. Then, in the control device, when the amount of water in the drainage tank 36 becomes a certain value or more, the tank valve 80 is opened to allow drainage.

As a result, when the amount of water accumulated in the drainage tank 36 by suction and dehydration is detected by the water amount detection sensor 85, the solenoid 83
Operates to lower the tank valve 80, open the drain port 81, and drain water. Therefore, the drain tank 36 will not be filled with water and can be prevented from overflowing. Moreover, it is not necessary to open and close frequently, and the operation rotation of the tank valve 80 can be reduced, and the component failure rate can be reduced.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention. In the first embodiment, the pressure sensor 65 shown in the second embodiment may be used instead of the air hole 44 which functions as a pressure sensor.
Accordingly, when the laundry S is moved by the laundry movement control function during dehydration so that the new surface of the laundry S comes to the position corresponding to the suction position, the suction pump 37 is driven after the motor 14 is stopped. At this time, the water passage hole 7 may not be properly aligned with the position of the suction body 8. Therefore, the suction pressure of the suction pump 37 is detected by the pressure sensor, and when the suction pressure exceeds a predetermined pressure, the water passage of the drum 2 is performed. A suction load control function of stopping the suction pump 37 when it is determined that the suction body 8 does not match the hole 7 can be added.

Therefore, there is a large difference in suction pressure between the water passage hole 7 of the drum 2 and the portion without the water passage hole 7, that is, if the suction body 8 and the water passage hole 7 of the drum 2 are aligned with each other, the water tank Although it is easy to take in the air in 3, the suction pressure does not reach the maximum pressure, but if it coincides with a portion other than the water passage hole 7, the suction body 8 is blocked and an excessive load is applied to the suction pump 37. Therefore, by stopping the suction pump 37,
It is possible to prevent the occurrence of trouble such as seizure of the suction pump 37. Further, when the drum 2 is rotated to move the laundry S at this time, the suction body 8 is in close contact with the drum 2, so that the rotation of the drum 2 is hindered and a load is applied to the drum driving motor 14 at the same time. The sliding of the sealing material 34 of the suction body 8 and the drum 2 also leads to deterioration of the sealing material 34, but by stopping the suction pump 37, the load on the motor 14 can be reduced and damage to the sealing material 34 can be prevented.

Further, in the suction area adjusting device, instead of moving the flat plate 32 of the suction body 8 in conjunction with the lid 45 for opening and closing the air hole 44, the flat plate 32 may be movable by a motor. This makes it possible to provide a pressure sensor and add a suction position control function for driving the motor of the suction area adjusting device so as to reduce the covered area of the suction body 8 when the detected suction pressure is smaller than a predetermined value.

Therefore, the drum 2 is rotated in order to uniformly dehydrate the laundry S, but the laundry S may not be uniformly distributed on the water passage holes 7 in contact with the suction body 8 due to the deviation of the laundry S. When dehydration is performed in this state, the air in the water tub 3 is sucked from the portion of the water passage hole 7 where the laundry S is not present, and the laundry S cannot be dehydrated properly. In order to avoid this state, when the suction pressure is low, the motor of the suction area adjusting device is driven to move the flat plate 32 so as to reduce the covering area of the suction body 8, and the passage of the drum 2 covered by the suction body 8 is passed. Reduce the number of water holes 7. Then, the suction pressure can be efficiently applied to the laundry S, the suction pump 37 can be operated in a state of maximum work rate, and the dehydration can be performed in the most efficient state.

Further, the suction member 8 in the first embodiment may be applied to the honeycomb drum 60 in the second embodiment. At this time, the drum 60 is not rotated during the dehydration. In addition, an elastic body such as rubber is attached to the flat plate 32 of the suction body 8 and the drum 6
By allowing sliding contact with 0, the drum 60 can be rotated during dehydration.

As another embodiment of the suction body of the second embodiment,
As shown in FIG. 11, the rollers 71 are rotatably attached to both sides in the circumferential direction of the connection port of the suction body 70, and the rollers 71 are attached to the drum 60.
The compression spring 72 for urging the suction body 70
It is externally fitted and fixed to the connecting pipe 73. And drum 6
The roller 71 rolls on the outer peripheral wall of the drum 60 in accordance with the rotation of 0, and the suction body 70 can be maintained in a state where it is always in contact with the drum 60, and a decrease in suction force can be prevented. As yet another embodiment, as shown in FIG. 12, the suction body 75 is a bellows-shaped hose 76 that is expandable and contractible, and its connecting port is mounted so as to be in pressure contact with the drum 60 and expands and contracts following the rotation of the drum 60. As a result, the drum 60 can always be contacted. Therefore, by making the connecting port of the suction member contactable while following the rotational vibration of the drum, the suction member is always brought into close contact with the drum and the suction force can be exerted, so that the dehydration efficiency can be improved.

Further, the connecting port of the suction body may be formed in a honeycomb shape, and each hole may be provided with an opening / closing valve made of an elastic material that opens / closes in accordance with the suction force. As a result, the opening / closing valve opens where there is laundry at the connection port and closes where there is no laundry, so the range in which the suction force acts is limited, and dehydration efficiency can be improved.

In the opening / closing control of the tank valve in the fourth embodiment, the tank valve may be opened at a preset timing, or the tank valve may be always opened to drain water while the suction device is stopped. By doing so, it is not necessary to provide a special drainage stroke, and the washing time can be shortened.

[0082]

As is apparent from the above description, according to the present invention, by performing suction dehydration, it is not necessary to rotate the drum at high speed during dehydration, the water tank is not vibrated greatly, and mechanical noise is also generated. Can be kept to a minimum, and the user is not uncomfortable. Therefore, anti-vibration measures are not required, it is not necessary to make the washing machine main body robust, and simplification of the reinforcing material and the vibration damping mechanism enables significant cost reduction.

In particular, when the water passage hole of the drum is formed in a honeycomb shape and an opening / closing valve is provided in the water passage hole, when the laundry is opposed to the suction body with the drum sandwiched, the opening / closing valve is provided in a place where there is no laundry. Is closed, the suction force effectively acts on the place where the laundry is present, and the dehydration efficiency can be improved.

The operating conditions for suction and dehydration are set according to the material and amount of the laundry, for example, the drum is stopped first to perform the suction dehydration, and then the drum is rotated to perform the suction dehydration, or the laundry is washed. Washing can be done without damaging the laundry by setting the suction force or the rotation speed of the drum according to the material and amount, and further by decreasing the rotation speed of the drum or the output of the suction device as suction and dehydration progress. The item can be gently dehydrated, and the dehydration is efficient and suitable for laundry. Further, when the drum is subjected to suction dewatering while rotating at a low speed, the laundry is uniformly stirred while being spread over the drum, which enables efficient dewatering and shortens the dewatering time. Moreover, by stopping the suction and rotating the drum after the completion of the dehydration, the entangled laundry can be disentangled, and it can be taken out easily.

Since the sucked air is circulated in the water tank, the suction device can be cooled, and the hot air generated here can raise the temperature of the entire laundry to promote evaporation and shorten the dehydration time. In addition, the hot and humid air is condensed and removed only by the drainage tank, and the dry air is circulated, which contributes to the improvement of the dehydration rate.

Moreover, by opening and closing the tank valve of the drainage tank in response to suction and dehydration, the drainage tank does not become full of water and overflow can be prevented, and it is not necessary to open and close the tank valve frequently. Rotation can be reduced and component failure rate can be reduced.

By utilizing the fact that the suction pressure changes depending on the positional relationship between the laundry and the suction body, it can be determined that the laundry does not completely cover the suction body if the suction pressure is low at the start of dehydration. By rotating the drum to move the laundry, the position of the laundry can be corrected, and the suction and dehydration can be performed with the laundry completely covering the suction body. Therefore, it is possible to prevent unbalanced dehydration such that part of the laundry is intensively sucked, and it is possible to efficiently dehydrate the laundry and shorten the dehydration time.

If the area covered by the suction body with respect to the drum is reduced in accordance with the amount of dehydration, the amount of air passing through the laundry and the negative pressure can be maximized in the final stage of dehydration, and efficient dehydration can be performed. That is, it can be driven at the maximum work rate of the suction pump, the negative pressure and the air volume are appropriate on the maximum work rate, and suction is performed at the final stage of the laundry with an appropriate amount of negative pressure, and the laundry with the appropriate air volume is used. Can be dried. Therefore, it is possible to improve the dehydration rate of the laundry and reduce the dehydration time by reducing the suction pressure and increasing the air volume by reducing the load due to the loss of water in the laundry.

By monitoring the amount of dehydration sucked from the laundry, it is possible to know the limit of dehydration of the sucked laundry at the same place. Suction dehydration is possible,
As a result, it is possible to perform dewatering with a good balance, and it is possible to select only the places where dewatering has not been performed and to dewater intensively, which greatly contributes to shortening the dewatering time.

Further, when the water passage hole does not properly match the position of the suction body, the suction pressure exceeds the predetermined pressure, and if left as it is, the suction device will be overloaded and cause a malfunction. By stopping the operation, it is possible to prevent the suction device from being overloaded, which leads to an improvement in safety.
Moreover, when the drum is rotated, the suction body is in close contact with the drum, which hinders the rotation of the drum, which may impose a load on the drum drive motor and at the same time damage the suction body. it can.

Further, when the laundry is not evenly distributed on the water passages which come into contact with the suction body due to the deviation of the laundry, the suction pressure becomes low. Therefore, if the covering area of the suction body is reduced at this time, the suction body is reduced. The number of water passage holes of the drum covered by is reduced, the suction pressure can be efficiently applied to the laundry, and the suction pump can be operated at the maximum work rate,
It enables dehydration in the most efficient state.

In the washing and rinsing process, by driving the suction device to discharge the water from the suction body, the dirt separated from the laundry can be quickly drained, and the dirt can be reattached to the laundry. Preventing the clean washing finish, it is possible to shorten the washing time.

When the rinse water is drained at the end of rinsing, the drum is rotated forward and backward and shaken to collect and arrange the laundry in the vicinity of the suction body, which can reduce the gap between the laundry and the laundry. Dehydration is possible and the dehydration efficiency can be improved.

Further, by spraying the high-pressure water, the laundry is brought into close contact with the drum, and the laundry can be spread evenly over the entire drum, so that the efficiency of dehydration by suction is improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a drum type fully automatic washing machine according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a suction body and a covered area adjusting device.

FIG. 3 is a configuration diagram of a drum type fully automatic washing machine according to a second embodiment.

FIG. 4 is a block diagram of a suction body

FIG. 5 is a plan view showing a state of the laundry placed on the drum and an enlarged view of the water passage hole.

FIG. 6 is a plan view showing a state of the laundry placed on the drum before and after the rotation of the drum.

FIG. 7 is a block diagram of a drum type fully automatic washing machine according to a third embodiment.

FIG. 8 is a diagram showing a relationship between a suction body and a stop position of a drum.

FIG. 9: Time chart of dehydration process

FIG. 10 is a diagram showing a structure of a tank valve of a drainage tank according to a fourth embodiment.

FIG. 11 is a configuration diagram of another embodiment of the suction body.

FIG. 12 is a configuration diagram of another embodiment of the suction body.

[Explanation of symbols]

 2 Drum 3 Water tank 7 Water passage hole 8 Suction body 9 Suction device 14 Drum drive motor 36 Drain tank 37 Suction pump 41 Circulation path 43 Drainage sensor 49 Suction area adjusting device 50 Control device 65 Pressure sensor S Laundry

Claims (14)

[Claims] 1. A drive for rotating a forward and reverse direction of a washing machine, comprising a water tank elastically supported by the main body of the washing machine, and a drum having a plurality of water passage holes internally supported by the water tank so as to be rotatable about a horizontal axis. In a drum type fully automatic washing machine provided with a device, a water supply device for supplying water to the water tank and a drainage device for draining water in the water tank, a drum water passage hole covering the outer peripheral wall of the drum and A drum-type fully automatic washing machine, comprising: a suction body that communicates with the suction drum; and a suction device that sucks the moisture of the laundry stuck to the inner peripheral wall of the drum through the suction body to dehydrate the laundry. 2. The drum-type whole apparatus according to claim 1, wherein the water passage hole of the drum is formed in a honeycomb shape, and the water passage hole is provided with an opening / closing valve that opens and closes according to the suction force of the suction device. Automatic washing machine. 3. The drum type fully automatic washing machine according to claim 1, further comprising a control means for controlling the drive of the suction device and the drive device according to the material or amount of the laundry. 4. The drum type fully automatic washing machine according to claim 1, further comprising dehydration control means for driving and controlling the suction device and the drive device according to the dehydrated state of the laundry. 5. The suction device is provided with a drainage tank for separating water from the sucked air, and a circulation path is formed for circulating the air from which water has been removed into the drum again by the suction device. The drum type fully automatic washing machine according to claim 1 or 2. 6. The drum-type fully automatic washing machine according to claim 5, wherein a tank valve for draining water from the drain tank is provided, and the tank valve is opened and closed according to the operation of the suction device. 7. A pressure sensor for detecting a suction pressure from a suction body, and before dehydration for moving laundry by rotating a drum until the suction pressure exceeds a predetermined value when the suction pressure at the start of dehydration is smaller than a predetermined value. The drum type fully automatic washing machine according to claim 1 or 2, further comprising a laundry moving means. 8. A suction area adjusting device that adjusts the suction force by varying the coating area of the suction body with respect to the outer peripheral wall of the drum, a dehydration sensor that detects the amount of dehydration that is sucked and dehydrated by the suction device, and a dehydration sensor that operates in accordance with the dehydration amount. A suction pressure control means for driving the suction area adjusting device is provided.
Or the drum type fully automatic washing machine described in 2. 9. A dehydration sensor for detecting a dehydration amount sucked and dehydrated by a suction device, and a dehydration-time laundry moving means for rotating a drum to move a laundry when the dehydration amount is reduced. The drum type fully automatic washing machine according to claim 1 or 2. 10. A pressure sensor for detecting suction pressure from a suction body, and suction for stopping the suction device when it is determined that the suction body is not in communication with the water passage hole of the drum when the suction pressure exceeds a predetermined value. 10. The drum type fully automatic washing machine according to claim 9, further comprising load control means. 11. A pressure sensor for detecting a suction pressure from a suction body, a suction area adjusting device for adjusting a suction force by varying a coating area of the suction body with respect to a drum outer peripheral wall, and when the suction pressure is smaller than a predetermined value. 10. The drum-type fully automatic washing machine according to claim 9, further comprising suction position control means for driving the suction area adjusting device so as to reduce a covering area of the suction body. 12. The drum-type fully automatic washing machine according to claim 1, further comprising suction / drainage means for driving the suction device while supplying water during washing and rinsing. 13. A fully automatic drum type automatic dram according to claim 1 or 2, further comprising a laundry positioning means for arranging the laundry in a position facing the suction body by rotating the drum forward and backward when rinsing is drained. Washing machine. 14. An injection device for injecting water into the drum, and a laundry adhering means for adhering the laundry to the drum by water pressure by operating the injection device before suction and dehydration are provided. The drum type fully automatic washing machine according to claim 1 or 2.