JP3464335B2 - Washing and drying machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer / dryer having a preheat drying function for performing a dehydration process while feeding hot air into a rotating tub rotating at a high speed during final dehydration at the end of washing, and more particularly to the above final dehydration. By performing the dehydration process while loosening the laundry stuck to the inner wall of the rotating tub,
The present invention relates to a washer / dryer that reduces unevenness in dryness of laundry and wrinkles.

[0002]

2. Description of the Related Art Conventionally, a so-called drum type washer / dryer as shown in the cross-sectional view of FIG. 5 has been known. This drum type washer / dryer has a water tank 105 supported by a suspension 103 in an outer box 101, and a rotary tank 107 rotatably provided in the water tank 105 so as to be coaxial with a horizontal axis X of the water tank 105. And a fan 102 that forms a wind to be sent into the rotary tank 107, and the fan 102.
Dehumidifier 10 for dehumidifying the wind formed by
9 and 9.

Further, the drum type washer / dryer has a heater 111 for turning the air dehumidified by the dehumidifier 109 into warm air, a motor 104 for rotationally driving the rotary tub 107, and the motor 104. Of the rotary shaft 104a, a pulley 108 provided on the rotary shaft 107a of the rotary tank 107, and a rotary belt 11 hung over the pulleys 106, 108.
0 and a water supply valve 112 for supplying water to the water tank 105.
And a drain valve 114 for draining the washing liquid, rinse water, etc. in the water tank 105.

When washing is performed with such a drum type washer / dryer, the user opens the opening / closing door 115 and opens the rotary tub 1 as described above.
The laundry (and the washing agent) is put into 07, and the washing start key is turned on. When the washing start key is turned on, a microcomputer detects it and controls the water supply valve 112 to supply water into the water tank 105. Then, when the water supply is completed, the motor 104 is controlled to rotate at a predetermined rotation speed.

When the motor 104 is rotationally driven, this rotational force is applied to each pulley 10 by the rotary belt 110.
It is transmitted to the rotary tank 107 via 6, 108. As a result, the rotary tub 107 is rotationally driven according to the rotation of the motor 104, and the laundry is washed by running water in the rotary tub 107.

Thereafter, the microcomputer controls the above-mentioned respective parts so as to sequentially perform the steps of drainage (drainage of washing liquid), water supply, rinsing, drainage, dehydration and drying.

Here, such a washer / dryer is provided with a preheat drying function for dehydrating the laundry while sending warm air into the rotary tub 107 during the dehydration process.

[0008] That is, the microcomputer, when the dehydration process is performed, the fan 102, the dehumidifier 109 and the heater 11
1 is turned on and the motor 104 is driven to rotate at high speed. As a result, wind is formed by the fan 102. The air is dehumidified by the dehumidifier 109, turned into warm air by the heater 111, and sent into the rotary tank 107 that is rotated at high speed through the ventilation holes 113. The warm air sent into the rotary tank 107 is returned to the fan 102 through the hole 116 of the rotary tank 107 that is rotationally driven and the hot air extraction hole 105a, and thereafter, the dehumidification treatment and the warming are performed as described above. After being weathered, it is circulated in the drum type washer / dryer so as to be fed again into the rotary tank 107.

As a result, the water temperature of the water contained in the laundry can be increased, and the dewatering effect can be increased by decreasing the viscosity of the water and the surface tension. Therefore, the time required for the dehydration process and the time required for the drying process after the dehydration process can be shortened.

[0010]

However, since the conventional washing and drying machine is capable of shortening the time required for the dehydration process and the time required for the drying process after the dehydration process, it is preferable that the above-mentioned preheating function is employed. However, there is a problem that the laundry after this dehydration process has uneven dryness and wrinkles.

That is, according to the above dehydration process, the rotary tank 10
When 7 is rotated at high speed, the laundry enters the hole 116 of the rotary tub 107, and the laundry is stuck to the inner peripheral wall of the rotary tub 107. Then, due to the centrifugal force generated by the rotation of the rotary tub 107, the laundry is exposed to the warm air while the inner peripheral wall of the rotary tub 107 remains attached to the inner wall of the rotary tub 107. The dehydration process proceeds while the portion located on the inner peripheral wall side is always located on the inner peripheral wall side. Therefore, the rotary tub 1 of the laundry
The dehydration process ends with unevenness in dryness between the portion of the 07 located on the inner peripheral wall side and the surface portion of the laundry, which causes the laundry to wrinkle.

The present invention has been made in view of the above-mentioned problems, and it is possible to realize good preheat drying without causing uneven drying of laundry and wrinkling of laundry. The purpose is to provide such a washer / dryer.

[0013]

A washing and drying machine according to the present invention sequentially carries out a washing process, a dehydration process and a drying process of the laundry in a rotary tub, and at the same time, in the rotary tub during the dehydration process. In order to solve the above-mentioned problems, a washing and drying machine that spins the rotary tub at a high speed while feeding warm air to dehydrate the laundry is characterized by including the following means.

That is, in order to solve the above-mentioned problems, the washing / drying machine according to the present invention performs the unraveling step, which is a step of unraveling the laundry in the rotary tub at least once during the dehydration step. Thus, the control means for controlling the rotation of the rotary tank is provided.

In the loosening process, the control means temporarily stops the rotation of the rotary tank during the dehydration process, and controls the rotation of the rotary tank so that the forward rotation and the reverse rotation are repeated at short intervals. The process is such that the laundry stuck to the inner peripheral wall of the rotary tub is evenly scattered in the rotary tub. By performing the dehydration process with such a loosening process sandwiched between them, warm air can be applied to the entire laundry being dehydrated, and the dehydration process can be performed without causing uneven dryness. Therefore, it is possible to prevent the laundry from wrinkling.

Next, the washer / dryer according to the present invention uses, as the control means, the rotary tub so that the laundry attached to the inner peripheral wall of the rotary tub is dropped by the dehydration process immediately before the loosening process. A device that controls the rotation of the cloth (a stripping process) is provided.

Specifically, this cloth peeling process includes:
For example, rotation control is performed such that the rotary tank is rotated at high speed and a sudden brake is applied. Further, when the washing / drying machine is applied to a washing / drying machine in which a rotating tub is rotated in a direction perpendicular to the ground for washing, etc., the rotating tub is rotated at an extremely low speed, for example, 90 degrees. , 180 degrees, 270 degrees, etc., rotation control is performed such that rotation and stop are repeated at predetermined angles.

When the rotation control is performed in which the rotary tub is rotated at a high speed and a sudden brake is applied, the laundry attached to the inner peripheral wall of the rotary tub is peeled off due to inertial force. Further, the washing / drying machine is applied to a washing / drying machine that rotates a rotary tub in a direction perpendicular to the ground for washing and the like, and controls rotation of the rotary tub to rotate at an ultra-low speed, or
When rotation control is performed such that rotation and stop are repeated at predetermined angles such as 0 degree, 180 degrees, and 270 degrees, the laundry attached to the inner peripheral wall of the rotary tub is 90 degrees, 1 degree from the ground.
It is lifted to the position of 80 degrees or 270 degrees and peeled off due to gravity.

By performing the above-mentioned loosening process after such a stripping process, the time of the subsequent loosening process can be shortened. Further, in the unraveling process after the above-mentioned stripping process, the laundry in the rotary tub can be sprinkled more evenly, and a better dehydrated state can be realized.

Next, in the washer / dryer according to the present invention, as the control means, when the loosening stroke is performed a plurality of times, the rotational speed of the rotary tank gradually approaches the steady rotational speed each time the loosening stroke is performed. Thus, a device for controlling the rotation of the rotary tank is provided.

This is an invention made by paying attention to the fact that the number of rotations at which the laundry sticks to the inner peripheral wall of the rotating tub differs before and after the loosening process. That is, the water content of the laundry in the rotary tub is reduced by controlling the rotation of the rotary tub before the loosening process. The decrease in the water content makes it difficult for the laundry to stick to the inner wall of the rotary tub in the rotation control of the rotary tub after the loosening process.

From the above, when the loosening stroke is performed a plurality of times, the control means performs the rotation control such that the rotation speed of the rotary tank is stepwise increased across each loosening stroke. Thereby, the laundry can be loosened more favorably by the above-described plural loosening steps.

Next, in the washing and drying machine according to the present invention, as the control means, a heater for forming warm air to be fed into the rotary tub until the rotational speed of the rotary tub reaches a steady rotational speed. Is turned off and the heater is turned on when the rotational speed of the rotary tank reaches a steady rotational speed.

When shifting from the above-mentioned loosening process to high-speed rotation during the dehydration process, it is necessary to increase the rotational speed of the rotary tank. In order to increase the above-mentioned rotational speed to the steady rotational speed, the rotary tank is kept stationary. A larger value of current is required than when rotating at a rotational speed. In a general household, the current capacity of the power source is about 15 amps, so there is a limitation, and it is preferable that the maximum current value during the entire process of the washing / drying machine be less than or equal to the current capacity of the general household. On the other hand,
Limiting the input specifications of the heater (using a low power consumption heater) is not preferable because it takes a long time to dry the laundry.

From the above, the control means keeps the heater off until the rotation speed of the rotary tank reaches the steady rotation speed, and when the rotation speed of the rotation tank becomes the steady rotation speed. The above heater is turned on. This allows
The maximum current value of the washing / drying machine can be set to be equal to or less than the current capacity of a general household without increasing the time required for drying the laundry.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a washer / dryer according to the present invention will be described in detail with reference to the drawings. First, the washer / dryer according to the present invention can be applied to a so-called drum type washer / dryer.

The drum type washer / dryer according to the first embodiment of the present invention has an outer casing 1 as shown in the transverse sectional view of FIG.
It has a water tank 3 supported by a suspension 9 therein, and a rotary tank 5 rotatably provided in the water tank 3 so as to be coaxial with the horizontal axis X of the water tank 3. A rotary shaft 23 rotatably supported by bearings 27 along the horizontal axis X is provided on the back side of the rotary tank 5, and a pulley 31 is provided at the tip of the rotary shaft 23. There is.

In the peripheral portion of the rotary shaft 23 of the rotary tub 5, a large number of hot air intake holes 49 for taking in the hot air formed during the dehydration process and the drying process of the laundry into the rotary tub 5. Is provided, and a large number of holes 5a are provided on the peripheral wall thereof. The rotary tub 5 allows the washing liquid and the warm air to flow in and out through the hole 5a, and also drains water during dehydration.

A water supply valve 15 is provided on the upper surface side of the water tank 3, and water is supplied into the water tank 3 through the water supply valve 15. Inside the bottom surface of the water tank 3, a washing heater 11 for heating the washing liquid and the rinsing water, and a water temperature detecting sensor 55 for detecting the temperature of the washing liquid and the rinsing water heated by the washing heater 11. And are provided. Further, on the outer side of the bottom surface of the water tank 3, the water tank 3
Drainage pump 1 for draining washing liquid and rinse water inside
9 and a drain motor 17 for driving the drain pump 19
And a drainage pipe 21 for discharging the drainage from the drainage pump 19 to the outside of the washing and drying machine.

The drum type washer / dryer has a drive motor 29 on the bottom side of the water tank 3 for rotating the rotary tank 5. A pulley 33 is provided at the tip of a rotary shaft 29a of the drive motor 29. The pulley 33 and the pulley 3 provided on the rotary shaft 23 are provided.
The rotation force of the drive motor 29 is transmitted to the rotation tank 5 by hanging the rotation belt 35 over the entire length 1.

Further, the drum type washer / dryer has a motor 42 for rotationally driving a fan 41 for forming a wind during a dehydration process and a drying process, and a dehumidification process for dehumidifying the wind formed by the fan 41. And a warm air heater 45 that uses the air dehumidified by the dehumidifier 43 as warm air.
The ventilation hole 7 that forms a passage for the wind so that the wind from the fan 41 is supplied to the warm air heater 45 through the dehumidifier 43, and the temperature of the warm air formed by the warm air heater 45 are detected. It has a temperature sensor 53.

Further, the drum type washer / dryer has an opening / closing door 25 for putting laundry in and out of the rotary tub 5. Between the opening / closing door 25 and the rotary tub 5, the warm air sent into the rotary tub 5 through the warm air intake hole 49 is returned to the fan 41 side and circulated in the water tub 3. It is a hot air extraction hole 51 for making it.

In such a drum type washer / dryer, the microcomputer 13 controls each of the above parts so that the user performs the designated stroke by operating the operation keys 59 provided on the operation panel. It has become. Specifically, when the washing start is designated by the key operation of the operation key 59, the microcomputer 13 detects the amount of cloth, water supply, washing, drainage, short-time dehydration, water supply, rinse, drainage, short-time dehydration, The above-mentioned parts are controlled so that the steps of water supply, rinsing, drainage, final dehydration, and drying are sequentially performed.

That is, when the start of washing is designated, the microcomputer 13 rotationally drives the drive motor 29 before water supply, and the amount of current required until a predetermined number of rotations is reached from the cloth amount detection sensor 57. And the amount of laundry put into the rotary tub 5 is detected based on the detected current amount. Then, the water supply amount, the washing time, the dehydration time, and the drying time are determined based on the detected cloth amount. The water supply amount, the washing time, and the like are determined by referring to the ROM table in which the water amount, the time, and the like, which are predetermined according to the cloth amount, are written.

Next, the microcomputer 13 controls the opening of the water supply valve 15 to supply water into the water tank 3 and also turns on the cleaning heater 11. The microcomputer 13 detects the water supply amount based on the opening time of the water supply valve 15, and also detects the water temperature in the water tank 3 based on the detection output from the water temperature sensor 55. Then, when the water supply amount reaches a water amount corresponding to the cloth amount, the water supply valve is controlled to be closed, the cleaning heater 11 is turned off, and the drive motor 29 is rotationally driven. As a result, the rotational force of the drive motor 29 is transmitted to the rotary tub 5 by the rotary belt 35 via the pulley 33 and the pulley 31, and the washing process is started.

Next, when the washing process is performed for a predetermined time, the microcomputer 13 stops energizing the drive motor 29 and rotationally drives the drain motor 17 in order to execute the drain process. As a result, the drainage pump 19 is driven as the drainage motor 17 rotates, and the washing water in the water tub 3 is drained through the drainage pipe 21.

Next, when the drain of the washing water in the water tank 3 is completed, the microcomputer 13 drives the drive motor 29 to rotate at a high speed while driving the drainage pump 19 to perform a short-time dehydration process. As a result, the washing water contained in the laundry in the rotary tub 5 is discharged to the drainage pump 19 side through the hole 5a of the rotary tub 5, and the time required for the subsequent rinsing process can be shortened. it can.

Next, the microcomputer 13 controls the drain motor 1 described above.
The energization of 7 and the drive motor 29 is stopped, and the water supply valve 15 is opened again to supply water into the water tank 3. Note that the temperature of the rinsing water may be adjusted by controlling the washing heater 11 to be turned on during the water supply.

Next, when a predetermined amount of water is supplied to the water tank 3, the microcomputer 13 controls the opening of the water supply valve 15 and rotationally drives the drive motor 29 to rinse the laundry. . As a result, the laundry in the rotary tub 5 is rinsed with the water flow generated by the rotation of the rotary tub 5. As described above, in the washing and drying machine,
Since the dehydration process is performed for a short time before this rinsing process, the rinsing process can be completed in a short time.

Next, when the rinsing process is completed, the microcomputer 13 stops the energization of the drive motor 29 and drives the drain motor 17 to rotate. As a result, the rinse water in the water tank 3 is drained through the drain pipe 21.

Next, the microcomputer 13 performs the final dehydration process when the washing water in the water tank 3 is drained.
The drive motor 2 with the drain pump 19 being driven.
9 is driven to rotate at high speed, and the motor 42, the dehumidifier 43, and the warm air heater 45 for driving the fan 41 to rotate are driven on.

As a result, the fan 42 is driven to rotate and wind is formed. This air is dehumidified by the dehumidifier 43, and the hot air heater 45 passes through the ventilation holes 7.
Is supplied to. Then, the hot air heater 45 turns the air into hot air, and the hot air is sent into the rotary tank 5 through the hot air intake holes 49 of the rotary tank 5.

The warm air sent into the rotary tub 5 is applied to the laundry in the rotary tub which is driven to rotate at high speed, and is returned to the fan 41 through the hot air take-out hole 51 and the like.
Then, after that, the dehumidifying process and the warming process are carried out as described above, and the sample is again sent into the rotary tank 5 and circulated in the washing and drying machine.

As described above, by sending hot air into the rotary tub 5 while performing the dehydration process, the water temperature of the water contained in the laundry is increased, which lowers the viscosity of the water and the surface tension. Through this, the dehydration effect can be increased. Therefore, the laundry in the rotary tub 5 can be dried to some extent before the subsequent drying process, and the drying process time can be shortened.

Here, the washing / drying machine executes the final dehydration step while feeding warm air into the rotary tub 5 during the final dehydration step, and temporarily stops the rotation during the final dehydration step. The loosening process for loosening the laundry in the rotary tub 5 is performed, and the final dehydration process is performed again after the loosening process.

That is, the microcomputer 13 stops energizing the drive motor 29 when a predetermined time has elapsed since the start of the final dehydration process. Then, after this energization is stopped, the rotary tank 5 performs a loosening process in which the rotation of the drive motor 29 is controlled so that the forward rotation and the reverse rotation are repeated at short intervals. The washing / drying machine is designed to perform such a loosening process, for example, three times during the final dehydration process as shown in the low level period (releasing process period) in FIGS. 2 (a) and 2 (b). There is.

In the final dehydration step, since the rotary tub 5 is rotated at a high speed, the laundry adheres to the inner peripheral wall of the rotary tub 5, but the dehydration step is temporarily interrupted during the process. By performing this unraveling process, the laundry attached to the inner peripheral wall of the rotary tub 5 can be put into the rotary tub 5 and evenly scattered to be unraveled. For this reason, when the dehydration process is started again, the hot air can be blown to the entire laundry being dehydrated, and the dehydration process can be completed without causing uneven drying. Therefore, it is possible to prevent the laundry from wrinkling.

Next, when the final dehydration process is completed in this way, the microcomputer 13 drives the drive motor 29 to rotate at a medium speed and also drives the fan 41 to rotate to bring warm air into the rotary tank 5. To carry out the drying process. As described above, the washing and drying machine is
Since the laundry is loosened by the above-mentioned loosening process and hot air is sent to the rotary tub 5 for dehydration,
This drying step can be performed after the laundry is dried to some extent, and the time required for the drying step can be shortened. Then, when the drying process is completed, the entire washing process is completed.

Next, a drum type washer / dryer according to a second embodiment of the present invention will be described. In the drum type washer / dryer according to the second embodiment, the microcomputer 13 is a process of dropping the laundry stuck to the inner peripheral wall of the rotary tub 5 by the dehydration process immediately before the loosening process. The peeling process is performed.

More specifically, the microcomputer 13 performs the loosening process before executing the loosening process.
As shown in FIG. 3, the rotary tank 5 is rotated at an extremely low speed, and the drive motor 29 is stopped so as to stop at a position of 90 °, a position of 180 °, or a position of 270 ° with respect to the ground (0 °). Control rotation.

As a result, the laundry stuck to the inner peripheral wall of the rotary tub 5 due to the high speed rotation in the dehydration step is lifted to the position of 90, 180 or 270 degrees from the ground, and the gravity thereof causes the inner peripheral wall to be lifted. It can be peeled off and dropped into the rotary tank 5.

Next, the microcomputer 13 controls each part so as to perform the above-mentioned loosening process after performing such a cloth peeling process. As a result, the laundry loosened from the inner peripheral wall of the rotary tub 5 can be subjected to the unraveling process, so that the laundry in the rotary tub 5 can be evenly scattered and unraveled. A dehydration state can be realized. In addition, the time required for the loosening process can be shortened.

In the drum type washer / dryer according to the second embodiment, in the cloth peeling process,
The rotary tank 5 is, for example, 90 degrees, 180 degrees or 270 degrees.
Although it was rotated to each position of the degree, this may be any number as long as it can peel off and drop the laundry stuck to the inner peripheral wall of the rotary tub 5, and if it is adjusted to an arbitrary angle. Good.

Further, as the above-mentioned cloth peeling process, when the above-mentioned loosening process is executed, a rapid braking may be applied to the rotary tank 5 rotating at a high speed. In this case, since the rotating tub 5 rotating at high speed is suddenly braked, the laundry stuck to the inner peripheral wall of the rotating tub 5 is peeled off due to inertial force. Therefore, the loosened laundry can be subjected to the above-described loosening process, and the same effect as described above can be obtained.

Next, a drum type washer / dryer according to a third embodiment of the present invention will be described. In the drum type washer / dryer according to the third embodiment, attention is paid to the fact that the rotation speed at which the laundry adheres to the inner peripheral wall of the rotary tub 5 differs before and after the loosening stroke, and the microcomputer 13 The rotation of the drive motor 29 is controlled so that the number of revolutions of the rotary tank 5 gradually approaches the steady number of revolutions each time the above-described loosening process is performed.

That is, the rotary tank 5 before the loosening process
The water content of the laundry in the rotary tub 5 is reduced by the dehydration process of. Since the water content decreases, the laundry is less likely to stick to the inner peripheral wall of the rotary tub 5 in the dehydration process of the rotary tub 5 after the loosening process.

From the above, the microcomputer 13
When performing the loosening stroke a plurality of times, as shown in FIG. 4, such as the first rotation speed, the second rotation speed, the third rotation speed, the steady rotation speed, etc., with each loosening stroke sandwiched, The drive motor 29 so as to increase the rotation speed of the rotary tank 5 step by step.
To rotate. Thereby, the laundry can be more easily unraveled by the plural unraveling steps.

Next, a drum type washer / dryer according to a fourth embodiment of the present invention will be described. In the drum type washer / dryer according to the fourth embodiment, in the final dewatering step, the microcomputer 13 keeps the rotation tank 5 in the rotation tank 5 until the rotation speed of the rotation tank 5 becomes a steady rotation speed. The hot air heater 45 for forming the warm air to be sent is turned off, and the hot air heater 45 is turned on when the rotational speed of the rotary tank 5 reaches a steady rotational speed.

When shifting from the loosening process to the high speed rotation during the dehydration process, it is necessary to increase the rotation speed of the rotary tank 5, and in order to increase the rotation speed to the steady rotation speed,
A larger current is required than when the rotary tank 5 is rotationally driven at a constant rotational speed. In a general household, the current capacity of the power source is about 15 amps, so there is a limitation, and it is preferable that the maximum current value during the entire stroke of the washing / drying machine be less than or equal to the current capacity of the general household (for example, 1500 W). It is preferable to suppress it below.). On the other hand, limiting the input specifications of the warm air heater 45 (using a heater with low power consumption) is not preferable because it takes a long time to dry the laundry.

From the above, the above-mentioned microcomputer 13
The hot air heater 45 is turned off until the rotational speed of the rotary tank 5 reaches the steady rotational speed, and when the rotational speed of the rotary tank 5 reaches the steady rotational speed, the hot air heater 45 is turned on. ON control. As a result, the maximum current value of the washing / drying machine can be suppressed to be equal to or lower than the current capacity of a general household without increasing the time required for the drying process.

In the description of each of the above-mentioned embodiments, the washer / dryer according to the present invention is applied to the drum type washer / dryer. This is because the rotary tub rotates in the horizontal direction with respect to the ground. It may be applied to a washing and drying machine.

Further, the above description of each embodiment is merely an example of the present invention, and other than the above, various modifications are made according to the design etc. within the scope not departing from the technical idea of the present invention. Of course, it is possible.

[0063]

The washing / drying machine according to the present invention is configured such that the laundry in the rotary tub is unraveled at least once during the dehydration process in which hot air is sent to the rotary tub for dehydration. Therefore, it is possible to perform dehydration while applying hot air to the entire laundry being dehydrated, and it is possible to prevent uneven dryness and wrinkles on the laundry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a drum type washer / dryer that is a first embodiment of a washer / dryer according to the present invention.

FIG. 2 is a time chart for explaining a loosening process performed in a dehydration process of the drum type washer / dryer according to the first embodiment.

FIG. 3 is a diagram for explaining a cloth peeling process performed immediately before a loosening process by the drum type washer / dryer of the second embodiment of the washer / dryer according to the present invention.

FIG. 4 is a time chart for explaining stepwise rotation control of a rotary tub performed by a drum type washer / dryer according to a third embodiment of the present invention before and after a loosening process.

FIG. 5 is a cross-sectional view of a conventional drum type washer / dryer.

[Explanation of symbols]

1 Outer Box of Drum Type Washer / Dryer 3 Water Tank 5 Rotating Tank 5a Rotating Tank Hole 7 Ventilation Hole 9 Suspension 11 Cleaning Heater 13 Microcomputer 15 Water Supply Valve 17 Drain Motor 19 Drain Pump 21 Drain Pipe 23 Rotating Shaft 25 Open / Close Door 27 Bearing 29
Drive motors 31, 33 Pulleys 35 Rotating belts 41 Fans 43 Dehumidifiers 45 Hot air heaters 49 Hot air intake holes 51 Hot air extraction holes 53 Temperature sensor 55 Water temperature detection sensor 57 Cloth amount detection sensor 59 Operation keys

Front page continuation (72) Inventor Kappei Katsuhei 8 Shinsita-cho, Isogo-ku, Yokohama, Kanagawa Pref. In-house Toshiba Living Space Systems Technology Research Institute (72) Inventor Masumi 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Toshiba Living Space System Technology Research Laboratory (72) Inventor Fumihiro Imamura 8 Shinsita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture In-house Toshiba Living Space Systems Technology Research Laboratory (72) Inventor Fumitaka Yamazaki 8 Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa Prefecture Address: Toshiba Living Space Systems Technology Research Center (72) Inventor Masanori Niwa 3-3-9 Shimbashi, Minato-ku, Tokyo (72) Instructor, Toshiba Abuei Co., Ltd. Shojiro Sato Shimbashi, Minato-ku, Tokyo 3-3-9 TOSHIBA AVEE Co., Ltd. (56) References Actual Development Sho 60-2982 (JP, U) Actual Development Flat 3-84079 (JP, U) (58) Fields investigated ( Int.Cl. ⁷ , DB name) D06F 1/00-51/02

Claims (4)

(57) [Claims] 1. The washing process of the laundry in the rotary tub, the dehydration process and the drying process are sequentially performed, and at the time of the dehydration process, the rotary tub is rotated at a high speed while blowing warm air into the rotary tub. In a washing and drying machine for dehydrating laundry, control means for controlling rotation of the rotary tub so as to perform an unraveling step of unraveling the laundry in the rotary tub at least once during the dehydration step. A washer / dryer characterized by having. 2. The control means controls the rotation of the rotary tub so that the laundry attached to the inner peripheral wall of the rotary tub is dropped into the rotary tub by the dewatering process immediately before performing the loosening process. The washer / dryer according to claim 1. 3. The control means, when performing the loosening stroke a plurality of times, rotationally controlling the rotary tank such that the rotation speed of the rotary tank gradually approaches a steady rotation speed each time the loosening stroke is performed. The washer / dryer according to claim 1 or 2, characterized in that. 4. The control means turns off a heater for forming warm air to be fed into the rotary tank until the rotational speed of the rotary tank reaches a steady rotational speed, thereby rotating the rotary tank. The heater is ON-controlled when the number of rotations reaches a steady rotation speed.
The described washer / dryer.