JP2003164692A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the twisting or tangling of clothes when the clothes are mixed between the top and the bottom parts in a drying process, and eliminate the occurring of wrinkles and the drying unevenness. <P>SOLUTION: A tank free stirring mode wherein drying is performed by normally and reversely rotating a stirring blade 15 under a state in which an internal tank 14 is not fixed is performed by a control means 38 in the drying process. Therefore, when clothe which are kicked up in the outer peripheral direction of the stirring blade 15 by a centrifugal force generated when the stirring blade 15 is normally or reversely rotated come into contact with the internal wall side surface of the internal tank 14, the internal tank 14 is not fixed. Therefore, the internal tank 14 is co-turned by a friction with the clothes, and the twisting or tangling of the clothes is suppressed. Also, the occurance of wrinkles is suppressed, and the clothes can be evenly dried. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a process of blowing warm air into an inner tub having a central axis of rotation in a substantially vertical direction to dry laundry, and can consistently carry out from washing to drying. The present invention relates to a washer / dryer.

[0002]

2. Description of the Related Art Conventionally, this type of washing / drying machine rotatably supports an inner tub having a central axis of rotation in a vertical direction in an outer tub elastically suspended in a housing, A stirring blade is rotatably provided at the bottom, and in the washing process and the rinsing process, the stirring blade is rotated to wash and rinse the clothes in the inner tub, and in the dehydration process, the inner tub is rotated at high speed for dehydration, In the drying step following the dehydration step, the air heated by the heating device is blown into the inner tank by the blower to dry it.

The operation of the above structure will be briefly described. With the inner bowl stopped after the dehydration process, the stirring blade is normally rotated at a rotation speed of 130 r / min for 1 second and turned off for 0.5 seconds at a normal rotation. Clothes are attached to the inner wall surface of the inner tub by centrifugal force at the time of spin-drying.

Next, after the cloth peeling process, the drying process is started. First, the stirring blade is rotated at a rotation speed of 1 with the inner bowl stopped.
At 30r / min, the clothes are turned upside down by repeating the normal rotation and reversal at a cycle of 0.5 seconds ON and 0.5 seconds OFF, and a loosening process is performed. Then, with the inner tank and stirring blades stopped, the heating device is used. The heated warm air is supplied to the inner tank for several minutes to dry the clothes. Then, the degree of dryness is determined, and if it is dry, the drying process is ended, but if it is not dry, the above-mentioned loosening process and the drying operation are repeated.

[0005]

In such a conventional washer / dryer, in the loosening process by the rotation of the stirring blade, the clothes moved in the outer peripheral direction by the centrifugal force of the rotation of the stirring blade come into contact with the side surface of the inner bowl. At this time, since the clothes have a speed in the rotating direction, a speed difference occurs between the clothes and the inner rice bran which is stopped. As a result, the clothes may be twisted or entangled due to friction with the inner rice bran, wrinkles may become serious, and dryness may be uneven.

The present invention is to solve the above-mentioned conventional problems. In the drying process, the stirring blade is rotated normally and reversely in a state where the inner blade is not fixed, so that the stirring blade and the inner blade can be used to switch clothes up and down. The purpose is to reduce the friction with the clothes, to suppress the twisting and entanglement of the clothes, to prevent the generation of wrinkles, and to dry the clothes evenly.

[0007]

In order to achieve the above-mentioned object, the washing and drying machine of the present invention is a tank for drying while controlling the stirring blades in a normal state by the control means without fixing the inner tank in the drying process. The free stirring mode is performed.

Thus, the speed difference between the clothes and the inner rice cake when the clothes are switched up and down by the agitating blade is reduced by the inner rice cake rotating together, and the friction between the clothes and the inner rice cake is suppressed, and the clothes are twisted or twisted. Entanglement can be suppressed, wrinkles can be suppressed, and even drying can be achieved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is such that an outer tank elastically suspended in a housing and an inner tank having a rotation center axis in a substantially vertical direction and rotatably supported in the outer tank. A tank, a stirring blade rotatably provided on the inner bottom of the inner tank, a motor for rotating the inner tank or the stirring blade, and the rotation of the motor is switched to either the inner tank or the stirring blade Communicate,
And a driving unit that can realize a state in which the inner tank is not fixed when the stirring blade is rotated, a blowing unit that blows circulating air into the inner tank, and a heating unit that heats the air blown by the blowing unit, A tank for controlling the operation of the motor, the driving unit, the air blowing unit, and the heating unit, wherein the control unit is a tank for drying while rotating the stirring blade in the normal direction without fixing the inner tank in the drying process. It is designed to perform a free stirring mode, and when the clothes that are sprung up in the outer peripheral direction of the stirring blade by the centrifugal force generated by reversing the stirring blade in normal contact with the inner wall side surface of the inner tank,
Since the inner tub is not fixed and it circulates due to friction with the clothes, it is possible to reduce the speed difference between the rotation of the garment and the inner tub, and to reduce the friction between the clothes and the inner tub after being circulated. It is possible to suppress twisting and entanglement of clothes, suppress the occurrence of wrinkles, and evenly dry the clothes.

According to a second aspect of the present invention, in the first aspect of the invention, the control means controls the motor and the driving means in the drying process to rotate the inner tank in addition to the tank-free stirring mode. It is configured to perform at least one mode of the tank rotation mode of drying while performing the tank rotation and the tank fixed stirring mode of drying by rotating only the stirring blade in a state where the inner tank is fixed. In the early stage of drying because it is easy to get entangled, the tank rotation mode that does not move the clothes at all mainly performs the drying, so that the clothes are not twisted or entangled at all, and the drying rate is high. As the clothes become harder to get tangled, the tank-free stirring mode gradually shifts to the main process, and while twisting clothes up and down, suppressing twisting and entanglement of clothes and drying them , In further dried finishing stages of,
By switching to the tank fixed stirring mode, without changing the inertial rotation of the inner tank, the stirring blades are frequently rotated in the normal direction, so that clothes can be switched up and down quickly, and warm air can be applied uniformly to quickly It is possible to perform fine control such that the clothes can be appropriately moved according to the water content of the clothes in the drying process, such as finishing the drying, and suppress wrinkles and make the clothes evenly dry.

According to a third aspect of the present invention, in the above-mentioned first or second aspect of the invention, the control means in the tank-free stirring mode controls the ON / OFF of the motor for a certain period of time so that the stirring blade is rotated normally. The OFF time is set to a time long enough to stop the inertial rotation of the inner tank.This allows the inertial rotation around the right rotation of the inner tank that occurs when the stirring blade is rotated to the right, for example. Do not rotate the stirring blade counterclockwise before the rotation is completed. For this reason, twisting or entanglement is not generated by applying the rotating force of the counter to the clothes that rotate together with the inner tub, so that wrinkles can be suppressed and the clothes can be dried evenly.

According to a fourth aspect of the present invention, in the above-mentioned first or second aspect of the present invention, the inner tank rotation detecting means for detecting the rotation of the inner tank is provided, and the control means in the tank-free stirring mode is a normal rotation. When switching the inversion, the motor is turned on after detecting that the inertial rotation of the inner tank has stopped, so that the right rotation of the inner tank that occurs when the stirring blade is rotated, for example, to the right The stirring blade is not rotated to the left before the inertial rotation of is completed. For this reason, twisting or entanglement is not generated by applying the rotating force of the counter to the clothes that rotate together with the inner tub, so that wrinkles can be suppressed and the clothes can be dried evenly.

The invention according to claim 5 is the above-mentioned claim 1.
In the invention described in any one of 4 above, a rib extending in a vertical direction is provided on the inner wall side surface of the inner tank, and by a centrifugal force generated by reversing the stirring blade in the tank-free stirring mode, When the clothes bounced up in the outer peripheral direction of the stirring blade contacts the inner wall side surface of the inner tank,
Since it can be surely caused, it is possible to surely reduce the friction between the clothes and the inner tub after being circulated, suppress the twisting and entanglement of the clothes, suppress the generation of wrinkles, and evenly dry the clothes. .

According to a sixth aspect of the invention, in the invention according to the fifth aspect, the height of the rib is 0 near the outer circumference of the stirring blade, and the height of the rib increases in a taper shape as it goes upward. Yes, the centrifugal force generated by reversing the stirring blade in the tank-free stirring mode causes the centrifugal force generated in the tank to stir up the clothes. Since it is possible to stably cause the inner tank to circulate without being disturbed, it is possible to suppress twisting and entanglement of the clothes, suppress the generation of wrinkles, and evenly dry the clothes.

According to a seventh aspect of the invention, in the invention according to the fifth or sixth aspect, the upper end of the rib is cut at a substantially central portion in the height direction of the inner tank, and the rib is the inner tank. Since it does not extend to the upper part of the rib, the rib does not become a physical or psychological obstacle when the user puts on the clothes.

According to the invention described in claim 8, in the invention described in claim 7, the height of the rib at the upper end is 0, and the height of the rib increases as it goes downward, and the rib exists on the rib. When the clothes are caught by the upper ends of the ribs, the clothes are not damaged or twisted or entangled, and it is possible to prevent wrinkles and evenly dry the clothes.

[0017]

EXAMPLE 1 Example 1 of the present invention will be described with reference to FIGS.

The case 11 has an outer tank 13 elastically suspended and supported therein by a plurality of suspensions 12,
The suspension 12 absorbs vibrations during operation. Inside the outer tub 13, an inner tub 14 having a central axis of rotation in a substantially vertical direction and accommodating clothes is rotatably supported, and a stirring blade 15 for stirring the clothes is rotatably provided on an inner bottom portion of the inner tub 14. It is provided. The stirring blade 15 is provided with a rib 17 on which clothes are hooked, and a taper portion 16 is provided on the outer peripheral side to form a pot shape.

A large number of dehydration holes 18 are formed on the inner peripheral wall of the inner tank 14.
Is provided, and a fluid balancer 19 is provided above it.
The motor 20 and the motor 20 are provided on the bottom of the outer tank 13.
Drive means for transmitting the rotation of No. 1 to the inner tank 14 and the stirring blade 15 is attached.

The driving means is a hollow dehydrating shaft 21 connected to the inner tank 14, a hollow portion of the dehydrating shaft 21, the upper end thereof is connected to the stirring blade 15, and the lower end thereof is the rotor 2 of the motor 20.
Clutch plate 25 and clutch plate 25, which switch between rotation and non-transmission of rotation of the rotor 20a to the dehydration shaft 21 by slidingly fitting the washing shaft 22 connected to 0a and the dehydration shaft 21 and moving up and down. And a geared motor 39 for driving the clutch lever 26.

As shown in FIG. 1, when the clutch plate 25 is below the movable range, the lower teeth 25a provided on the lower side of the clutch plate 25 and the rotating teeth 20b provided on the rotor 20a are engaged with each other. The rotation of the rotor 20a is transmitted to the inner tank 14 via the dehydration shaft 21. As shown in FIG. 2, when the clutch plate 25 is moved upward in the movable range by the clutch lever 26 driven by the geared motor 39, the lower teeth 25a of the clutch plate 25 and the rotating teeth 20b of the rotor 20a are disengaged from each other. The rotation of the rotor 20a is transmitted to only the stirring blade 15 via the washing shaft 22. At this time, the upper teeth 25b provided on the upper side of the clutch plate 25 and the stationary teeth 27a provided on the stationary portion 27 are not meshed with each other, and the dehydration shaft 21 is not fixed, so that the inner tank 14 is in a rotation-free state. is there. When the clutch plate 25 is moved further upward, as shown in FIG. 3, the upper teeth 25b provided on the upper side of the clutch plate 25 and the stationary teeth 27a provided on the stationary portion 27 engage with each other to fix the dehydration shaft 21, The inner tank 14 is fixed.

The control means 38 can drive the geared motor 39 and switch the above three clutch states via the clutch lever 26 as required.

A passage is formed from the lower part of the outer tub 13 to a circulation duct 29 via an expandable lower bellows-shaped hose 28, and an outlet of the circulation duct 29 is a blower for drying (blower means).
It is connected to 30 entrances. The outlet of the drying blower 30 is connected to the passage 29a, a heater (heating means) 31 is provided in the passage 29a, and an expandable upper bellows-shaped hose 32 is connected to the passage 29a. A jet duct 33 is connected to the tip of the upper bellows-shaped hose 32 and opens toward the inner tank 14. Since the inner tank 14 communicates with the outer tank 13 through the dehydration hole 18 in the inner peripheral wall, these passages form a circulation path.

A lid 3 which can be opened and closed is provided on the outer tank 13.
5 is provided so that the user can open the clothes when putting them in and out and close the circulation path by closing the clothes when performing the drying operation. The cooling blower 36 includes the housing 11
Is attached to the side surface of the inner tank 14 and is configured to cool the lower portion of the inner tank 14 and the circulation duct 29. The drain valve 37 drains the water in the outer tub 3 through the drain hose 43.

The control means 38 controls the operations of the motor 20, the drive means, the drying blower 30, the heater 31, the cooling blower 36, the drain valve 37, etc. to control the washing, rinsing, dehydrating and drying processes.

The operation of the above configuration will be described. First,
In the washing process, the control means 38 drives the motor 20 with the clutch plate 25 in the lower part of the movable range as shown in FIG. 1, thereby rotating the inner tub 14 containing the clothes and the washing water. At this time, the drain valve 37 is closed.

As a result, the outer peripheral portion of the wash water in the inner tub 14 rises due to the centrifugal force. Along with this, the inner tank 1
The washing water between the outer tub 13 and the outer tub 13 rises along the inner wall of the outer tub 13, and then is sprayed from the upper part of the inner tub 14 into the inner tub 14,
It will circulate. As a result, the washing water passes through the clothes in the inner tub 14 and is washed.

After that, the clothes are rinsed and rinsed in the same manner as in the washing step, and in the dehydration step, the drain valve 37 is opened to drain the water from the drain hose 43, and then in the clutch state as shown in FIG. 20 is driven to rotate the inner tub 14 containing the clothes at a high speed. The centrifugal force generated by this causes the clothes to be pressed against the inner wall of the inner tub 14, and the centrifugal force separates the water from the clothes, drains the water from the dehydration hole 18 to the outer tub 13, and is drained from the drain hose 43 to perform the dehydration process. proceed.

In the drying step, dry warm air is blown into the inner tub 14 through the upper bellows-shaped hose 32 and the ejection duct 33 by the blowing of the drying blower 30 and the heat generation of the heater 31. The warm air sent to the inner tank 14 removes water from the clothes when passing through the gaps between these clothes, and after leaving the inner tank 14 inside the outer tank 13 in a damp state, the lower bellows-shaped hose 28 To reach the circulation duct 29. When the hot air containing moisture is passing through the inner wall of the outer tub 13 and the inside of the circulation duct 29, the cooling blower 36 cools the lower part of the outer tub 13 and the outer wall of the circulation duct 29. Moisture in the moist air is condensed on its inner wall, and the moist warm air is dehumidified and returns to the drying blower 30. The water that has condensed on the inner walls of the outer tub 13 and the circulation duct 29 is discharged from the drain hose 43 by opening the drain valve 37 as needed. After completion of the drying process, the heater 31 is turned off and the drying blower 3
0, the air blow process for driving the blower 36 for cooling is performed, and after the dried clothes are cooled down, the process ends. Here, an air-cooling dehumidification system using cooling air as a means for cooling the moist hot air is used, but a water-cooling dehumidification system may be used.

In the drying process, the control means 38 controls the operation of the motor 20, the driving means, the drying blower 30, the heater 31, and the cooling blower 36 as described below. When the washing process is completed and the drying process is started, first, the clothes are attached to the wall surface of the inner tub 14 at the last dehydration of the washing process. Therefore, remove the clothes, and sufficiently loosen them to remove air from the clothes. The stripping process is performed to increase the contact area.

Specifically, the geared motor 39 is driven to move the clutch plate 25 upward via the clutch lever 26, and the motor 20 is turned on for 0.4 seconds in the clutch state as shown in FIG. With the time being OFF for 2 seconds, the stirring blades 15 are reciprocated 3 times with the inner tank 14 fixed while rotating in the normal direction. By doing so, the clothes attached to the wall surface of the inner tub 14 at the time of dehydration are peeled off, and the cloth volume of the clothes is increased to increase the contact area with the air, so that the subsequent drying process can be accelerated. To do.

Next, in the clutch state as shown in FIG.
The motor 20 is rotated, and the inner tank 14 is rotated in one direction at a rotation speed of 35 r / min for drying while rotating in one direction for 15 minutes. In the tank rotation mode, since the inner tank 14 is only slowly rotated in one direction, the clothes do not move inside the inner tank 14. For this reason, at the initial stage of drying, which is easy to be entangled due to the high water content, no twisting or entanglement of the clothes occurs, and the high water content allows the clothes to dry sufficiently even without moving them. .

Next, the rotation of the inner tank 14 is stopped, and the geared motor 39 is driven to the clutch state as shown in FIG.
The tank-free agitation mode is performed for 30 seconds, in which the normal rotation is reversed at the time of 5 seconds ON and 4.5 seconds OFF, and the inner tank 14 is not fixed and is dried at the rotation speed of 160 r / min while being rotated normally. . At this time, the clothes move toward the outer peripheral side of the stirring blade 15 by the centrifugal force generated by the rotation while being hooked on the rib 17 provided on the stirring blade 15, and receive the upward force by the taper portion 16. , Is flipped up at the outer peripheral end of the stirring blade 15, and by repeating this, clothes are switched up and down. The clothes that are flipped up while rotating contact the side surface of the inner wall of the inner tub 14, but the inner tub 14 is in a rotation-free state, so that the inner tub 14 is rotated in the same direction due to the friction between the clothes and the inner tub 14. To do. As a result, clothes and inner tank 1
4 and the friction between the clothes and the inner tub 14 is suppressed thereafter. For this reason, it is possible to suppress twisting and entanglement of the clothes, prevent wrinkles, and evenly dry the clothes even if the clothes are switched up and down. Further, when the inner tank 14 is rotated, the inertia rotation of the circulation continues, but since the OFF time is as large as 4.5 seconds, it is not possible to reverse the stirring blade 15 before the inertia rotation is stopped. Absent. For this reason, twisting or entanglement does not occur by applying the rotational force of the counter to the clothes that rotate together with the inner tub 14, so that wrinkles can be suppressed and the clothes can be dried evenly.

Then, the tank rotation mode is performed again, and the tank rotation mode and the tank-free stirring mode are sequentially repeated thereafter. As the drying progresses, the tank rotation mode time is shortened and the tank free stirring mode time is lengthened. Then, the frequency of changing clothes is increased and the drying is evenly promoted.

When the finishing stage near the end of drying is entered, the clutch state is switched as shown in FIG. 3, and the motor 20 is rotated in the forward direction for 0.4 seconds ON and 1.2 seconds OFF, and the inner tank is rotated. With the 14 fixed, the stirring blade 15 is set to 160 r / mi.
A fixed tank agitation mode is performed in which drying is performed while reversing the normal rotation at a rotation speed of n. In the tank fixed agitation mode, the agitating blades 15 are frequently rotated normally and inverted without waiting for the inertial rotation of the inner tank 14 to be stopped, so that clothes can be switched up and down quickly, and warm air can be uniformly applied to dry the clothes quickly. Can be finished. Then, the heater 31 is turned off, and a blower stroke for driving the drying blower 30 and the cooling blower 36 is performed,
After the clothes have cooled down, the entire drying process is completed.

As described above, according to this embodiment, the control means 3
8 is a state in which the inner tank 14 is not fixed in the drying process,
By performing the tank-free stirring mode in which the stirring blades 15 are dried while reversing the rotation of the stirring blades 15, the inner tank 14 when the clothes that are splashed up in the outer peripheral direction of the stirring blades 15 by the centrifugal force comes into contact with the inner wall side surface of the inner tank 14 Since the rotation speed of the clothes and the inner tub 14 can be reduced and the friction can be suppressed,
Even if clothes are swapped up and down, twisting and entanglement can be suppressed, wrinkles can be suppressed, and even drying can be achieved.

Further, the control means 38 causes the clothes to be twisted or entangled at all in the early stage of drying when the water content is liable to be entangled, by mainly performing the drying in the tank rotation mode in which the clothes are not moved at all. As the drying rate increases and the clothes become harder to get entangled, the tank-free stirring mode gradually shifts to the main process, and the clothes are twisted and entangled while suppressing the twist and entanglement. In addition, by frequently rotating the rotary blades 15 in the forward and reverse directions at the finishing stage of drying, the tank fixed agitation mode, which allows the clothes to be swapped up and down quickly, shifts to the main stroke, which results in a uniform distribution. Since it is dried by applying warm air, it is possible to suppress the generation of wrinkles and dry it evenly.

In the tank-free stirring mode, the control means 38 reverses the stirring blade 15 in the normal direction by controlling ON / OFF of the motor 20 to stop the inertial rotation of the inner tank 14 during the OFF time. Because it's long enough to
The stirring blade 15 is not inverted before the inertial rotation of the inner tank 14 in the same direction, which occurs when the stirring blade 15 is rotated, is completed. For this reason, twisting or entanglement does not occur by applying the rotational force of the counter to the clothes that rotate together with the inner tub 14, so that wrinkles can be suppressed and the clothes can be dried evenly.

In this embodiment, the driving means for directly transmitting the rotation of the rotor to the stirring blade 15 is used, but the driving means having a speed reducing mechanism for decelerating and transmitting the rotation of the motor 20 to the stirring blade 15 is used. It may be a means. The control means 38
In the drying process, the motor 20 and the driving means are controlled to control a tank-free stirring mode, a tank rotation mode in which the inner tank is dried while rotating, and a stirring blade 15 alone with the inner tank 14 fixed. Although the tank fixed stirring mode for drying is performed, the present invention is not necessarily limited to this, and the tank free stirring mode may be combined with at least one other mode.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. The inner tank 14 is provided with a plurality of magnets 42 above the fluid balancer 19. The inner tank rotation detecting means 40 for detecting the magnetism of the magnets 42 and detecting the rotation of the inner tank 14 is provided with the lid 35 of the outer tank 13.
It is provided in the vicinity of. Further, a plurality of ribs 41 extending in the vertical direction are provided on the inner wall side surface of the inner tank 14, and the height of the ribs 41 is 0 in the vicinity of the outer circumference of the stirring blade 15, and becomes larger in a taper shape as it goes upward, Further, the rib 41 at the upper end is cut at a substantially central portion of the inner tank 14 and has a height of 0, and becomes larger in a taper shape as it goes downward. Other configurations are the same as those in the first embodiment, and the same reference numerals are given and the description thereof is omitted.

With the above-mentioned structure, the control means 38 controls the inner tank 14 at the time of switching the forward rotation and the reverse rotation in the tank-free stirring mode.
Turn on the motor 20 after detecting that the inertial rotation of the
Therefore, the stirring blade 15 is not inverted before the inertial rotation due to the rotation of the stirring blade 15 in the same direction as the inner tank 14 is finished. For this reason, twisting or entanglement does not occur by applying the rotational force of the counter to the clothes that rotate together with the inner tub 14, so that wrinkles can be suppressed and the clothes can be dried evenly.

Further, since the rib 41 extending in the vertical direction is provided on the side surface of the inner wall of the inner tank 14, the centrifugal force generated by reversing the stirring blade 15 in the normal direction flips it up in the outer peripheral direction of the stirring blade 15. Since rotation of the inner tub 14 when the clothes come into contact with the inner wall side surface of the inner tub 14 can be surely caused, friction between the clothes and the inner tub 14 after the rotation can be surely reduced, It suppresses twisting and entanglement of clothes, suppresses the generation of wrinkles, and allows uniform drying. Further, the height of the rib 41 is 0 near the outer circumference of the stirring blade 15, and is made to increase in a taper shape as it goes upward. Therefore, the stirring blade 15 is rotated by the normal rotation and the centrifugal force generated by the stirring blade 15 causes the stirring blade 15 to rotate. When the clothes bounced up in the outer peripheral direction of 15 come into contact with the side surface of the inner wall of the inner tub 14, the lower part of the rib 41 does not hinder the leaping up, and the supply of the inner tub 14 can be stably caused. it can. For this reason,
It suppresses twisting and entanglement of clothes, suppresses the generation of wrinkles, and allows uniform drying. Moreover, since the upper end of the rib 41 is cut at a substantially central portion in the height direction of the inner tub 14, the rib 41 does not extend to the upper part of the inner tub 14, so that the rib 41 is not pulled when the user puts on the clothes. No physical or psychological obstacles. The height of the rib 41 at the upper end is 0.
So, as it gets larger in a taper shape as it goes downward,
When the clothes existing on the ribs 41 are caught by the upper ends of the ribs 41, the clothes are not damaged or twisted or entangled, and it is possible to suppress the generation of wrinkles and evenly dry the clothes.

[0043]

As described above, according to the washer / dryer of the present invention, the control means performs the tank-free agitation mode in which the agitating blade is normally rotated and inverted in the drying process without fixing the inner tank. Therefore, when the clothes bounced up in the outer peripheral direction of the stirring blade due to the centrifugal force generated by reversing the stirring blade in the normal direction comes into contact with the inner wall side surface of the inner tank, the inner tank is not fixed. For this reason, the inner tub circulates due to friction with the clothing, so that the speed difference between the rotation of the garment and the inner tub can be reduced, and the friction between the clothing and the inner tub after the circulation can be reduced. In addition, it is possible to suppress twisting and entanglement of clothes, suppress the generation of wrinkles, and evenly dry the clothes.

[Brief description of drawings]

FIG. 1 is a sectional view of a washer / dryer in a tub rotation mode according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the washer / dryer in the same tank-free stirring mode.

FIG. 3 is a sectional view of the washer / dryer in the same tank fixed stirring mode.

FIG. 4 is a sectional view of a washer / dryer according to a second embodiment of the present invention.

[Explanation of symbols]

11 housing 13 outer tank 14 inner tank 15 stirring blades 20 motor 30 Drying blower (Blower means) 31 Heater (heating means) 38 Control means 40 Inner tank rotation detection means 41 rib

Continued front page    (72) Inventor Shinichi Matsuda             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 3B155 AA16 BA09 CB07 CB49 CB52                       CB55 DC14 DC25 HB02 HB03                       HB35 KA33 LA02 LA04 LB16                       LB25 LC02 MA02

Claims (8)

[Claims] 1. An outer tub elastically suspended in a housing, an inner tub having a rotation center axis in a substantially vertical direction and rotatably supported in the outer tub, and an inner bottom of the inner tub. A stirring blade that is freely provided, a motor that rotates the inner tank or the stirring blade, and the rotation of the motor is transmitted by switching to either the inner tank or the stirring blade. A driving unit that can realize a state in which the tank is not fixed; a blowing unit that blows circulating air into the inner tank; a heating unit that heats the air blown by the blowing unit;
A tank-free stirring mode in which a controller for controlling the operations of the driving unit, the blowing unit, and the heating unit is provided, and the controller controls the stirring blade to dry while rotating the stirring blade in the normal state without fixing the inner tank in the drying process. Do washer / dryer. 2. The control means controls the motor and the driving means in the drying process to add to the tank-free stirring mode,
A combination of at least one mode of a tank rotation mode for drying while rotating the inner tank and a tank fixed stirring mode for rotating and drying only the stirring blade with the inner tank fixed.
The washer / dryer described in 1. 3. The control means, in the tank-free stirring mode, controls the ON / OFF of the motor for a time to reverse the rotation of the stirring blade, and the OFF time is long enough to stop the inertial rotation of the inner tank. 3. The washer / dryer according to claim 1, wherein the washing and drying time is used. 4. An inner tank rotation detecting means for detecting rotation of the inner tank is provided, wherein the control means detects a stop of inertial rotation of the inner tank at the time of switching between forward rotation and reverse rotation in the tank-free stirring mode, and then the motor. The washer / dryer according to claim 1 or 2, which is turned on. 5. The washer / dryer according to claim 1, wherein a vertical rib is provided on a side surface of an inner wall of the inner tank. 6. The height of the rib is 0 near the outer circumference of the stirring blade.
The washing / drying machine according to claim 5, wherein the washing / drying machine becomes larger in a taper shape as it goes upward. 7. The washer / dryer according to claim 5, wherein the upper end of the rib is cut at a substantially central portion in the height direction of the inner tub. 8. The washing / drying machine according to claim 7, wherein the height of the ribs at the upper end is 0, and the ribs increase in size as they go downward.