JPH04152972A - Washing and drying machine - Google Patents

Abstract

PURPOSE:To suppress the wrinkles of clothes due to drying by executing alternately a forward rotation and a backward rotation after the dehydrating process is finished. CONSTITUTION:After the dehydrating process is finished, a forward rotation and a backward rotation of a washing tank are executed alternately as a pre- processing of a drying process, and clothes stuck to the inside peripheral wall of a drum 3 in the course of dehydration in the dehydrating process are peeled off. Subsequently, in the drying process, a motor 75 is subjected to reciprocating turn in a set time in an operation cycle of, for instance, 15 seconds ON - one second OFF, and also, a drying heater 4 is energized, and hot air is fed into the drum 3 by a blower 22 and an axial fan, and clothes in the drum 3 are dried.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a washing/drying machine that performs a washing process, a rinsing process, a spin-drying process, and a drying process by rotating a washing tub disposed in an outer tub.

[Prior art]

An outer tub is supported within the frame, and a drum made of synthetic resin, which is a horizontal axis type washing tub, is rotatably or rotatably supported within the outer tub, and the drum is rotated back and forth at low speed. A drum that executes a washing process and a rinsing process, executes a dehydration process by rotating the drum at high speed, and executes a drying process by blowing warm air heated by a heater into the drum while rotating the drum. The type washer/dryer was published in 1970-49570.
It is disclosed in the publication No.

In such a washing/drying machine, the washing process, the rinsing process, the dehydration process, and the drying process as described above are sequentially executed to automatically perform the process from washing to drying of clothes.

[Problem to be solved by the invention]

However, in the above-mentioned washer/dryer, the centrifugal force during the dewatering process causes the clothes to stick to the inner peripheral wall of the drum, and after the dehydrating process ends, the clothes remain stuck to the inner peripheral wall of the drum. Since the drying process is performed in such a state, there is a problem that the clothes may be dried with wrinkles formed on them.

The present invention has been made in view of the above circumstances, and provides a washer/dryer that suppresses wrinkles in clothes due to drying by controlling the separation of clothes from the drum after the completion of the dehydration process and then executing the drying process. The purpose is to provide.

[Means to solve the problem]

The washer/dryer according to the present invention includes an outer tub and a washing tub that rotates inside the outer tub, and performs a washing process by rotating the washing tub.
A washing/drying machine configured to sequentially perform a rinsing process, a dewatering process, and a drying process, characterized in that the washing tub is alternately rotated forward and reverse after the dehydration process is completed. do.

[Effect]

During the dehydration process, the laundry in the washing tub sticks to the inner wall of the washing tub due to the centrifugal force during dehydration, but after the completion of this dehydration process,
When the washing tub rotates forward and reverse alternately, the laundry sticks to the inner wall of the washing tub due to the impact force applied to the laundry when switching from normal (or reverse) to reverse (or forward) rotation. It loosens and peels off from the inner wall. Thereafter, in the subsequent drying step, the laundry loosened in the washing tub is dried.

〔Example〕

The present invention will be specifically described below based on drawings showing embodiments thereof.

FIG. 1 is a schematic perspective view of a washer/dryer according to the present invention. In the figure, numeral 1 is a frame made of sheet metal in the shape of a prism with a bottom. The front edge of the upper surface of the frame 1 is an upper panel made of synthetic resin that accommodates equipment such as electronic components, and is equipped with a keyboard 11 on the upper surface of which is provided with various operation keys to be described later. At the rear edge of the upper surface of the frame 1, an accommodating section 9b, which is a synthetic resin upper plate for accommodating equipment such as a water supply device, is expanded and formed. Further, a rectangular upper clothing input port 10a is provided between the operating portion 9a and the storage portion 9b on the upper surface of the frame 1, and the upper clothing input port 10a is arranged in the direction indicated by the white arrow in the figure. An upper IE 14 made of synthetic resin that opens and closes is provided.

Inside the frame 1, an outer tank 2, which is a synthetic resin water tank formed in the shape of a horizontal drum, is disposed. 3 is disposed coaxially and rotatably with the outer tank 2.

FIG. 2 is a vertical sectional view of the outside of the outer tub 2 of the washer/dryer according to the present invention, viewed from the front. The outer tank 2 has a flat bottom 2c, an outwardly curved side 2b, and a flat top 2c.
A is in the shape of a horizontal drum projecting upward into a rectangular tube shape, and an intermediate clothing input port 10b is provided in the upper part 2a. The upper clothing input port 10a and the intermediate clothing input port 10b are watertightly connected by a rubber gasket 12. In addition, a horizontal support part 20.20 whose bottom surface is flat is protrudingly formed at the lower part of the side parts 2b, 2b of the outer tank 2, and an iron plate is attached to the bottom surface of this horizontal support part 20.20. 29.29 is fixed. frame 1
Inside, the upper parts of the side parts 2b, 2b of the outer tank 2 are elastically suspended and supported from the upper four corners of the frame 1 by upper supports 5, 5, . . . made of elastic members. on the other hand,
The lower part of the outer tank 2 is attached to a lower support 6 made of an elastic member disposed between the plate 29 and the bottom of the frame 1.
．． 6... is supported. Further, in the vicinity of one of the upper supports 5, 5, etc., there is a device that is connected to the vibration of the upper support 5, captures the large vibration of the upper support 5 as vibration of the drum 3, and is turned on by this vibration. , an abnormal vibration switch 102 consisting of a micro-sinch that turns off is provided. The on/off signal of this abnormal vibration switch 102 is given to a first microcomputer 100, which will be described later, and the first microcomputer 100 is configured to detect a signal when the off time interval of the signal is longer than a predetermined time. A process is performed in which vibrations of the drum 3 are regarded as abnormal vibrations.

At the center of the front wall of the outer tank 2, a heater casing 40 having a generally teardrop shape when viewed from the front is disposed. The heater casing 40 has 3 parts inside the heater casing 40 from the outside.
Two mounting brackets 41, 41. ．． 41, and the drying heater 4, which has a heating element formed in the shape of a horseshoe along the side wall of the heater casing 40, is attached to these mounting brackets 41, 41.
．． It is fixed within the heater casing 40 at 41.

A circulation duct 21 is integrally formed on the left side of the heater casing 40 when viewed from the front, and communicates with the inside of the outer tank 2 through a circulation port (not shown) opened in the front wall of the outer tank 2 and extends upward. . At the top of this circulation duct 21 is a blower fan 22.
A connecting pipe 42 is provided between the upper part of the circulation duct 21 and the heater casing 40, and the inside of the circulation duct 21 and the inside of the heater casing 40 communicate with each other via the connecting pipe 42. has been done.

Further, on the right side of the heater casing 40 when viewed from the front, there is an overflow port (not shown) opened at a height position 172 on the front wall.
An overflow chamber 23 is provided for discharging overflow water from the overflow chamber 23, and an overflow hose 230 for draining overflow water in the overflow chamber 23 is connected to the bottom of the overflow chamber 23. An air trap 24 for detecting the water level in the outer tank 2 is integrally formed at the outer lower part of the front wall of the outer tank 2. This air trap 24 is connected to a water level detector 2 disposed near the operating section 9a.
5 via a pressure hose 26. The water level detector 25 detects a change in the water level in the outer tank 2 as a pressure change inside the near trap 24, moves a magnetic body within the coil in accordance with this pressure change, and as a result changes the water level by changing the inductance of the coil. It is detected as a change.

A drain port 71 having a drain port (not shown) for draining water in the outer tank 2 is provided at the bottom of the outer tank 2. A drainage hose 72 is connected to lead the water out of the machine. The overflow chamber 23 is connected to the drain hose 72 via an overflow hose 230, so that overflow water flowing into the overflow chamber 23 is led out of the machine through the drain hose 72. A drain electric valve 73 for opening and closing the drain port of the drain port portion 71 is provided between the drain port portion 71 and the drain hose 72, and as is well known, this is disposed below the outer tank 2. The valve is opened by winding the wire using the rotational force of the drainage motor 79, and on the other hand, by cutting off the rotational force, the valve returns to the closed state by the biasing force of a spring (not shown).

Furthermore, a dual water supply solenoid valve 8 is disposed within the housing portion 9b (see FIG. 1). The water supply solenoid valve 8 includes a first water supply hose 26 whose one end is connected to the side wall of the upper part 2a of the outer tank 2, and a second water supply hose (not shown) whose one end is connected to the front wall of the upper part 2a of the outer tank 2. ) is connected.

The water discharged from the water supply electromagnetic valve 8 is supplied into the outer tank 2 via the first water supply hose 26 and the second water supply hose,
The water flows along the inner wall of the outer tank 2 and reaches the drain port 71 .

FIG. 3 is a vertical cross-sectional view of the inside of the drum 3 of the washer/dryer according to the present invention, viewed from the front, and FIG. 4 is a vertical cross-sectional view of the inside of the drum 3, viewed from the side.

The drum 3 includes a cylindrical body 31 with a horizontal axis and a bottom, and a fluid fluid balancer 32 mounted on the open side of the body 31.
It is composed of a front plate 33 fixed to the outside of the fluid balancer 32, and is arranged in the outer tub 2 with the front plate 33 facing the front of the washer/dryer.

In the center of the front plate 33 is an inlet port 3 formed with an axial fan that also serves as a filter for inhaling dry air.
4 is formed protrudingly. One end of a support shaft 35, which serves as a rotation axis on the front side of the drum 3, is fixed to the center of the suction port 34, while the end of the body 31 on the opposite side to which the front plate 33 is fixed is fixed. At the center, a support shaft 36 is provided on the same axis as the support shaft 35 and serves as the other rotating shaft of the drum 3.
One end of is fixed. The other end of the support shaft 35 is supported by a front bearing 350 disposed at the center of the heater casing 40, and the other end of the support shaft 36 is supported at the center of the rear wall of the outer tank 2. rear bearing 36 arranged in
0, and the drum 3 is rotatable and rotatable around a support shaft 35 and a support shaft 36.

On the inner circumferential surface of the body 31 of the drum 3, a panfur 31a having a triangular cross section is formed to bulge toward the axis of the body 31.
31b and 31c are arranged in three equal parts, and this panful 31
a, 31b, and 31c are designed to scrape up the clothes inside the drum 3 when the drum 3 rotates.

Further, on the inner circumferential surface and outer circumferential surface of the body portion 31 of the drum 3, horizontal lips 301, 301.・・・
・Many protrusions are formed. Furthermore, a large number of through holes 302, 302, . Water is supplied and discharged to and from the drum 3 through...

Further, on the outer periphery of the body portion 31, a central angle 12 in the body portion 31 is provided.
Recess 3 formed by reducing the diameter of the 0 degree arc part
1d, and at the bottom of this recess 31d, a lower clothing input port 10c, which is rectangular in plan view and occupies approximately 1/2 of the bottom area of the recess 31d, is provided.

A lower clothing input port 1 is provided at the front and rear edges of the recess 31d.
Slide grooves 390, 390 extend in the circumferential direction to which a synthetic resin lid 38 that opens and closes 0c is slidably attached. The slide grooves 390, 390 are formed by attaching band-shaped slide covers 392, 392 to the upper portions of protrusions 391, 391 provided in the circumferential direction of the body portion 31, respectively. The lid body 38 is supported within the slide grooves 390, 390, and opens and closes the lower clothing input port 10c by sliding within the slide grooves 390, 390. Between one side edge of the lid 38 and the edge of the lower clothing input port 10c, there is a locking/disengaging mechanism for locking and releasing the lid 38 when the lower clothing input port 10c is closed by the lid 38. 37 are provided. Further, in the center of the upper surface of the lid body 38, a storage portion 380 for storing laundry processing side such as detergent, bleach, fabric softener, etc. is recessed in advance.

As mentioned above, the drum 3 is supported by the front bearing 350 and the rear bearing 360 with the support shaft 35 and the support shaft 36, but the shaft end of the rear bearing 360 protrudes outward from the rear wall of the outer tank 2. A drive pulley 74 is attached to the end of this shaft. Further, a motor 75 which is a three-phase induction motor and is a power source for the drum 3 is disposed outside the bottom surface of the outer tank 2. A belt 76 is connected between the drive shaft of the motor 75 and the drive pulley 74. are connected. A magnet 77 is attached to the outer tank 2 side of the driving pulley 74, and a reed switch 78 is disposed at a position facing the magnet 77 on the outer surface of the rear wall of the outer tank 2. As the drive boob IJ74 rotates, it closes when the magnet 77 approaches, and opens when it separates. That is, when the reed switch 78 opens and closes once, the drum 3 rotates once.

Further, a drum temperature detector 43 consisting of a thermistor that detects the temperature of the drum 3 by detecting the temperature of the mounting bracket 41 is mounted on any one of the mounting brackets 4L41.41.
is installed. Further, a water boiling heater 27 with a heating element attached parallel to the bottom surface of the outer tank 2 is fixed in the outer tank 2 by a water boiling heater mounting bracket 270, and the water boiling heater 27 can be used to heat water. It is used when washing clothes, and the water in the outer tub 2 is heated. A water temperature detector 28 is attached to the water boiling heater mounting bracket 270 to detect the water temperature in the outer tank 2 by detecting the temperature of the water boiling heater mounting bracket 270.

FIG. 5 is a plan view of the keyboard 11 of the operating section 9a.
In the figure, reference numeral 117 indicates a reservation key group consisting of a plurality of keys that are operated to make a reservation for starting the operation at a predetermined time. A display screen 118 is provided that displays errors in input information and malfunctions in control during operation as error messages.

Further, on the right side of the reservation key group 117, there is a water temperature setting key 1 for setting the water temperature in the outer tank 2 (water temperature value, 35°C, 45°C).
11a, washing time setting key 111b for setting the washing process time (5 minutes, 10 minutes, 15 minutes), number of rinses (2 times,
a rinse number setting key 111c for setting (3 times, 5 times);
Dehydration power setting key 111 to set the dehydration power (strong, medium 1 weak)
d, and the output of the drying heater 4 (strong.

A row of heater output setting keys 111e are provided for setting the medium (lower than 1). At a position a suitable distance away from the heater output setting key 111e to the right are a washing course setting key 113a for setting a washing course (standard, wool, etc.) according to the type of clothing, and a washing course setting key 113a for setting a washing course (standard, wool, etc.) according to the type of clothing, etc. Drying course setting keys 113b to be set are arranged in a row.

In addition, the water temperature setting key 111a and the washing time setting key
1llb, rinse frequency setting key 111c, dehydration power setting key 1lld, heater output setting key 111e, washing course setting key 113a, and drying course setting key 113
Behind each key b, there is a water temperature setting display LED group 112a, which is made up of a plurality of LEDs that light and display information selected by these keys, and a wash time setting display LED group 1.
12b Rinse number setting display LED group 112c, dehydration power setting display LED group 112d, heater output setting display LE
A D group 112e, a washing course setting display LED group 114a, and a drying course setting display LED group 114b are provided, respectively.

The water temperature setting key 111a, washing time setting key 111b
.

Rinse number setting key 111c, dehydration power setting key 111d
.

Heater output setting key 111e, washing course setting key 11
3a and the drying course setting key 113b are each key 1.
Each time the button is operated, each setting can be changed, and the lighting display of each LED group is changed accordingly.

In particular, the water temperature setting key 111a, wash time step/setting key 111b, rinse number setting key 111c, dehydration power setting key 111d, and heater output setting key 111e are operated a predetermined number of times so that execution of each process can be omitted. It has become.

Further, on the right side of the drying course setting display group LED 114b is a favorite course start key 115a which is a key for starting a washing course according to the user's preference.

A standard course start key 115b, which is a key to start a predetermined standard washing course, a 7-block key 115c, which stops the operation of the washer/dryer, and a lid open key 115d, which opens the top lid 14, are arranged in a row. ing. In front of each of these keys is a favorite course start key acceptable display LE0116a that illuminates to indicate that operation of these keys is possible.

Standard course start key acceptance display LHD 116b
.

A stop key acceptance indication LED 116c and a lid open key acceptance indication LHD 116d are provided, respectively.

These favorite course start key 115a, standard course start key 115b, stop key 115c, and lid open key 115d each have a corresponding acceptance display L.
Key operations are enabled only when the ED is lit.

By operating these keys, the user can drive the vehicle according to his/her preference. For example, when performing a predetermined standard operation, operate the standard course start key 115b to start the operation,
When performing other operations, a desired washing course is set by operating the various keys as described above, and the desired course start key 1158 is operated to start the operation.

Next, the configuration of the control system of the washer/dryer according to the present invention will be explained. FIG. 6 is a schematic block diagram showing the configuration of the control system of the washer/dryer.

In the figure, 100 is a first microcomputer that mainly controls the washer/dryer, and 200 is a second microcomputer that mainly controls the inverter of the motor 75.

These first microcomputer 100 and second microcomputer 200 are connected by a communication line, and can communicate information between them via this communication line.

The first microcomputer 100 includes an input key circuit 101 consisting of various operation keys as described above, the water level detector 25. The drum temperature detector 43. Said water temperature detector 28. The abnormal vibration switch 102 and the upper lid 14
A signal is input from the top cover switch 103, which opens and closes in conjunction with the opening and closing of the top cover switch 103. The first microcomputer 100 includes a first drive circuit 1 that is a circuit that drives a plurality of devices, respectively.
05 and a second drive circuit 107 are connected, and a control signal for driving the device is given to these based on the input signal as described above. Further, the first microcomputer 100 is connected to an LED display circuit 104 made up of each LED as described above, and the first microcomputer 100 sends setting information of the washing course and the operating status of the washer/dryer to the LED display circuit 104. Information for LED display is given, such as information. The first drive circuit 105 is connected to a power-off AC solenoid 106, a drainage motor 79, and a blower fan 22, to which the first drive circuit 105 supplies respective drive signals. The second drive circuit 107 includes a water supply XI valve 8.
．． Auxiliary agent injection valve 1 for introducing an auxiliary agent such as a softener into the outer tank 2
08. Top lid lock release solenoid 109 for unlocking the top lid 14. A water boiling heater 27 and a drying heater 4 are connected, and a second drive circuit 10 is connected to them.
Each drive signal is given from 7.

An inverter drive circuit 110 that drives the motor 75 using an inverter and a reed switch 78 are connected to the second microcomputer 200 . A signal regarding the rotation of the drum 3 is given to the second microcomputer 200 from the reed switch 78. A control signal for controlling the rotation of the motor 75 is given from the second microcomputer 200 to the inverter drive circuit 110. In addition, the inverter drive circuit 110 provides drive signals for forward/reverse control and rotation speed control to the motor 75 connected thereto based on the control signal given from the second microcomputer 200.

The first microcomputer 100 has a first power supply circuit 111.
1 is supplied with power for its operation, and in addition to the power supply line, between the first power supply circuit 111 and the first microcomputer 100, there is a power supply line between the first microcomputer 100 and the first microcomputer 100 when the power is turned on. In order to determine whether the frequency of the power supplied from the reset circuit 113 and the first power supply circuit 111 is 50Hz or 60Hz, and to cause the first microcomputer 100 to perform an operation in synchronization with the frequency determined as a result of the determination. frequency synchronization circuit 115
Further, the second microcomputer 200 is supplied with power for its operation from the second power supply circuit 112, and the second microcomputer 200 is connected in parallel with the second power supply circuit 112 and the second microcomputer 200, in addition to the power supply line. microcomputer 20
0, a reset circuit 114 is connected to initialize the second microcomputer 200 when the power is turned on.

The first drive circuit 105 and the device driven thereby, the second drive circuit 107 and the device driven thereby, the inverter drive circuit 110 and the motor 75 driven thereby. Power is supplied from the AC power supply 300 to the first power supply circuit 111 and the second power supply circuit 112 . A power switch 116 is provided in the power supply path from this AC power source 300, and when this power switch 116 is turned on, power is supplied to the control system as described above, and the washer/dryer is enabled to operate. It's supposed to be.

In the washer/dryer configured as above, the first microcomputer 100 and the second microcomputer 200
By controlling the washing process - rinsing process -
While a washing course consisting of a dehydration process and a drying process is performed sequentially, it is also possible to perform each process selectively. The rinsing step is configured, for example, as follows: first intermediate dehydration operation - first rinsing operation - second intermediate dehydration operation - second rinsing operation, and before the rinsing operation and the rinsing operation. This intermediate dehydration operation is repeated multiple times. Further, after the dewatering process is completed, as a pretreatment for the drying process, the rotation of the drum 3 is alternately rotated in forward and reverse rotations as described later, and after this control is completed, the drying process is started. It has become.

Such a washer/dryer is operated by performing operations as described below.

After turning on the power, when the standard course start key 115b is operated (pressed) on the keyboard 111, each L
Information on the standard washing course (standard setting information such as setting time and number of operations for each process) is displayed on the ED, and operation of the standard washing course is started. In addition, when performing an operation other than the standard washing cycle, first press the water temperature setting key 11.
1a, select the process to be executed by operating the washing time setting key 111b, the number of rinse setting key 111c, the dehydration power setting key 111d, the heater output setting key 111e, the washing course setting key 113a, and the drying course setting key 113b, and select it. Set the set time and number of operations for the process. When the user presses the favorite course start key 1158, only the selected steps are sequentially executed.

When the operation is started, in the washing process, first, water is supplied into the outer tank 2 up to the set water level, and at the same time, power is supplied to the water heater 27, and the washing water is heated up to the set water temperature set by operating the water temperature setting key 111a. heat up. Next, the motor 75 is repeatedly rotated back and forth within a set time with an operation cycle of, for example, 9 seconds on and 3 seconds off. As a result, the drum 3 rotates back and forth, and inside the drum 3, the clothes are separated by baffles 31a, 31.
b, 31c, and the so-called slapping washing is performed. Further, at the same time as the motor 75 is turned off as described above, DC braking is applied to the motor 75 for, for example, 2 seconds.

As a result, the drum 3 suddenly stops, and the clothes are washed against the inner wall of the drum 3 by the reaction.

Further, in the rinsing operation during the rinsing process, the motor 75 is controlled in the same way as in the washing process, and rinsing is executed.

In the intermediate dehydration operation and dehydration step during the rinsing step,
A drum 3 for dehydration whose water level in the outer tank 2 is set in advance
When the water level reaches the recent water level, which is a low set water level that allows rotation of the drum 3, the rotation speed of the motor 75 is increased, and the drum 3 is rotated in one direction at high speed. As a result, the clothes in the drum 3 are dehydrated by centrifugal force.

After the dewatering process is completed, as a pretreatment for the drying process, the washing tub is alternately rotated in the forward and reverse directions as described below, and the clothes stuck to the inner peripheral wall of the drum 3 during dehydration in the dehydration process are removed. is peeled off. In the drying step, the motor 75 is rotated back and forth within a set time with an operation cycle of, for example, 15 seconds on and 1 second off, and the drying heater 4 is energized, and the air blower 22 and the axial fan blow air. Warm air is fed into the drum 3, and the clothes inside the drum 3 are dried.

Next, a method of controlling the rotation of the drum 3 after the dewatering process in the washer/dryer configured as described above will be described.

FIG. 7 is a flowchart showing the procedure for controlling the rotation of the drum 3 after the dewatering process is completed.

First, the first microcomputer 100 initializes the time count Tc to 0 (step 1), and starts measuring time (step 2).

Next, step 3) determines whether 1 second has elapsed.
Only when it is determined that 1 second has passed, the time count Tc
Add 1 to (Step 4). In this way, the count value of the time count Tc is increased by 1 every second.

Next, after starting such time counting, it is determined whether or not the time count Tc is 5 or more (step 5).

In step 5, if it is determined that the time count Tc is not 5 or more, the drum 3 is rotated clockwise at 50 rpm (
(normal rotation) (step 6), return to step 3, and repeat the above-mentioned process. On the other hand, if it is determined in step 5 that the time count Tc is 5 or more, it is determined whether the time count Tc is 10 or more (step 7).

In step 7, if it is determined that the time count T is not 10 or more, the rotation direction of the drum 3 is switched, the drum 3 is rotated counterclockwise (reversely) at 50 rpm (step 8), and the process returns to step 3. Repeat the process.

On the other hand, if it is determined in step 7 that the time count TC is 10 or more, the time count Tc is set to O (step 9), and the process ends.

In this control, after the dewatering process is completed, the drum 3 is rotated forward and reverse for 5 seconds each without any time interval, and the drum 3 is rotated by the impact force applied to the drum 3 during the forward and reverse rotation.
Loosen and peel off any clothing stuck to the inner periphery.

FIG. 8 is a flowchart showing another example of the procedure for controlling the rotation of the drum 3 after the completion of the dewatering process.

First, the first microcomputer 100 initializes the time count Tc to 0 (step 11) and starts time counting (step 12).

Next, it is necessary to determine whether 0.5 seconds have passed or not.
13) Add 1 to the time count Tc only if it is determined that 0.5 seconds have passed (step 14).

In this way, the count value of the time count Tc is increased by 1 every 0.5 seconds.

Next, after starting time measurement in this way, the time count Tc reaches 10
It is determined whether or not this is the case (step 15).

If it is determined in step 15 that the time count Tc is not 10 or more, the drum 3 is rotated clockwise at 5 rpm (step 16), and the process returns to step 13 to repeat the above-described process. On the other hand, if it is determined in step 15 that the time count Tc is 10 or more, it is determined whether the time count Tc is 11 or more (step 17).

In step 17, if it is determined that the time Tc is not 11 or more, the drum 3 is stopped and the
Step 18), return to step 13 and repeat the above process. On the other hand, in step 17, time count T
If it is determined that c is 11 or more, it is determined whether the time count Tc is 21 or more (step 19
).

If it is determined in step 19 that the time count Tc is 21 or more, the drum 3 is rotated counterclockwise at 50 rpm+n (step 20), and the process returns to step 13 to repeat the above-described process. On the other hand, if it is determined in step 19 that the time count Tc is 21 or more, it is determined whether the time count Tc is 22 or more (step 21).

If it is determined in step 22 that the time count TC is not 22 or more, the drum 3 is stopped (step 22), the process returns to step 13, and the above-mentioned process is repeated.Meanwhile, in step 21, the time count TC is If it is determined that it is not 22 or more, the time count T,
is set to 0, and step 23) ends the process.

In this control, after the dewatering process is finished, the drum 3 is rotated forward and reverse for 5 seconds each, with a time interval of 0.5 seconds, and the drum 3 is rotated by the impact force applied to the drum 3 during the forward and reverse rotation. Peel off any clothing stuck to the inner circumference.

In other words, in such control, the drum 3 is rotated forward and backward without any time interval or at extremely short time intervals such as O-5 seconds, thereby applying an impact force to the clothing stuck to the inner circumferential wall of the drum 3. Loosen this and peel it off.

After the above-mentioned control is performed, in the drying process, the drum 3 is rotated back and forth at a predetermined operation cycle as described above to perform drying, thereby drying the clothes.

In this example, after the dewatering process was completed, the drum 3 was rotated once in the normal direction and once in the reverse direction as a pretreatment for the drying process. However, the present invention is not limited to this. You can go twice.

〔effect〕

As detailed above, in the washer/dryer according to the present invention,
After the spin-drying process is complete, if the washing tub is rotated in forward and reverse directions alternately, the impact force applied to the washing tub when the rotational direction of the washing tub changes will loosen the laundry stuck to the inner wall of the washing tub. In the drying step, which is carried out continuously, the laundry loosened in the washing tub is dried, making it possible to suppress wrinkles in the clothes due to drying. has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a washer/dryer according to the present invention, and FIG.
The figure is a vertical sectional view of the outside of the outer tank viewed from the front, Figure 3 is a vertical sectional view of the inside of the drum viewed from the front, Figure 4 is a vertical sectional view of the inside of the drum viewed from the side, and Figure 5 6 is a schematic block diagram showing the configuration of the washer/dryer control system. FIG. 7 is a flowchart showing the procedure for controlling the rotation of the drum after the dewatering process is completed. FIG. 8 is a plan view of the keyboard of the operation unit. is a flowchart showing another example of drum rotation control after the dewatering process is completed. 2...Outer tank 3...Drum 100...1st
Microcomputer 200...Second microcomputer patent Applicant: Sanyo Electric Co., Ltd. Agent
Patent Attorney Noboru Kono Spark ■ Figure Figure Figure 1991! Monthly visit to Japan

Claims (1)

[Scope of Claims] 1. An outer tub and a washing tub that rotates inside the tub, and the washing tub is rotated to sequentially perform a washing process, a rinsing process, a spin-drying process, and a drying process. A washer/dryer characterized in that the washing tub is alternately rotated forward and reversely after the dewatering process is completed.