JPH053990A - Fully automatic washing machine with dryer - Google Patents

Abstract

PURPOSE:To prevent the overdrying of washed articles by measuring the quantity of washed articles in a drum in the washing process from a motor electric current and memorizing the quantity of the washed articles, and setting the drying time in correspondence with the quantity. CONSTITUTION:Since the dc motor 12 of a water tank 5 is controlled through the PWM method by a PWM controller 12 through a control circuit MC, if the revolution driving torque of a drum 7 increases, the electric current value increases automatically, and control is performed, keeping the prescribed number of revolution. The electric current supplied to the dc motor 12 is memorized and calculated by the controller MC, and used as the data in the fuzzy estimation for the quality and quantity of washed articles W. Since the quantity of the washed article W is memorized in the controller MC, the drying completion time can be estimated approximately in the continuous process from washing to drying, and drying is allowed to proceed through the fuzzy estimation and control. And the thermal output of a heater 30 is varied nearly at the drying completion time, and drying can be completed with a desired degree of drying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum-type fully automatic washer / dryer, and more particularly to a placing process for laundering clothes (clothes to be washed and dried) stored in a drum, a washing process, The present invention relates to a fully automatic washer / dryer that performs a rinsing step, a dehydrating step and a drying step.

[0002]

2. Description of the Related Art In recent years, a method for performing washing and drying of clothes in a single apparatus has been required even in general households from the viewpoint of rationalization of life, and a drum type washer / dryer has begun to spread as one solution to this problem. There is. Since the drum-type washer / dryer is washed by tumbling, there is little entanglement of the laundry in the washing process, there is little damage to the laundry, and the amount of water used is small. On the other hand, in the clothes dryer, there is a static drying method in which clothes are dried without tumbling, but tumbling drying by a drum is efficient, and there are advantages such as less damage to the cloth. From the above circumstances, an integrated drum type washer / dryer that doubles as a washing drum and a drying drum is in the limelight in line with the needs for social life rationalization.

Since the washing of the drum type washer / dryer is a natural drop impact due to tumbling, it is unavoidable that the washing degree varies depending on the amount of laundry even if the laundry is washed for the same time, and when the amount of laundry is large, the washing degree is large. The deviation is large, and the time required for washing is greater than that of the current pulsator type fully automatic washing machine.
It takes about twice as much, but the damage to the clothes is about half that of the pulsator type, and it can be said that this is an extremely clothes-friendly washing method. The reason why washing takes a long time and the degree of washing deviation is large is that there is no active mechanical force that contributes to washing, and the state of clothes is hard to change (it is remarkable when the load is heavy). In the drying process, a tumbling drying method is used to detect the dry hot air and exhaust air introduced into and discharged from the drum with a humidity sensor, or to detect the temperature difference between the hot air temperature introduced to the drum and the exhaust air temperature from the drum. The degree of dryness is detected and the drying operation is performed. For the end of drying, two temperature sensors detect the end of drying due to the temperature difference between the hot and cold air flowing into and out of the drum. However, the temperature change after the moisture content of the laundry evaporates Inevitability is inevitable. Also, in order to eliminate unevenness in drying and obtain good drying, the purpose of drying is to be achieved by putting the entire clothes in an overdried state. There is a difficult side. In order to improve the cleaning performance and the drying performance, the rotation of the drum is sometimes rotated in the reverse direction to perform the operation, which leads to the improvement of the performance.

Japanese Patent Laid-Open No. 1-274797 discloses a washing machine which uses fuzzy inference. In this structure, the scheduled washing time is expressed in the form of a membership function,
It indicates the likelihood that washing will be completed at each time. To determine the end of washing during washing, the membership function of the over-scheduled washing time is integrated and normalized so that the maximum grade value becomes 1. It indicates how likely it is that washing will be completed after a certain period of time. The value of the degree of cleansing is obtained by the degree of change in the output of the optical sensor within a fixed time. The washing degree is compared with the integral of the scheduled washing time, and the washing is finished when the value of the washing degree is lower than the integral value of the scheduled washing time.

[0005]

A drum type washer / dryer capable of automatically operating from washing to drying has become popular as a product that meets the needs for rationalized living. This drum type washer / dryer is a device in which the process of transferring the laundry from the washing machine to the dryer by the user is omitted, and the drum required for washing, the drum required for drying, that is, an essential component essential to both machines ( By integrating the objectives of each drum), it is possible to say that the device is one step closer to human since it matches the needs of labor saving.

However, the distance between the device and the human is still large. Currently, the interface between the device and humans is left only to the operation panel of the device. In order to satisfy the requirements in each process from washing to drying, the operation procedure of the operation panel is complicated and the display is confusing. On the other hand, due to the operability and simplification of the display, it is not uncommon for the user to be dissatisfied with insufficient performance.

That is, it is desired that the device approaches a human by improving the interface between the device and the human. In the current laundry machines, it is hard to say that washing and drying are achieved by automatic control from washing to drying as desired by the user, and it depends largely on how the user uses the device. In other words, the essence expected of a washer / dryer is to remove dirt without damaging clothes and to secure a desired dry state (dryness) without unevenness of clothes without damaging clothes.

These problems are as follows. 1) Since the control functions of the washing process, the dehydration process and the drying process are independent of each other and not organically combined, the information obtained in the previous process and the data of the result of execution etc. Since it is not reflected in the post-process, the post-process becomes immature and the essence of washing to drying (to remove stains without damaging clothes and to secure the desired dry state (dryness) without damaging clothes without damaging clothes) ) Is insufficiently achieved. For example, the amount, quality, and temperature of washing water obtained in the washing process are not fully utilized as control information for each process of rinsing, dehydration, and drying. 2) The function of the detergent enzyme depends on the water temperature and the immersion time, and if the water temperature and environment are optimal, the stains can be decomposed quickly. Therefore, the washing time can be shortened and the washing strength can be weakened to reduce the damage to the cloth. Although it is possible, the current equipment does not perform detailed washing in response to changes in conditions (water temperature, immersion time, degree of dirt, quality of laundry, quantity, etc.). Also, in the rinsing process, the amount of rinsing water, the rinsing time, the rinsing strength, etc., are not precisely handled according to the water temperature and the quality and quantity of laundry. 3) With respect to drying, it is difficult to detect the degree of dryness with high accuracy, so drying unevenness is prevented by ending the drying process in an overdry state. It is extremely difficult to finish the drying process.

Further, since there is no preferable drying means for the delicate clothes drying method, it is left to manuals such as hand washing and shade drying. 4) The washer / dryer has an advanced space-saving feature by integrating the washing function and the drying function by sharing the drum, but the control function is not limited to the series from washing to drying. Since the processes are not integratedly controlled, the goodness of being an integrated type is not fully demonstrated. The function of detecting the quantity and quality of laundry (washing load detection) and the drying load detection function is not provided, and the data obtained in the previous step (washing step) is not used for the subsequent step (drying step). It is difficult to use it as a database for integrated control because the sensor function in each process of washing, dehydration and drying intervenes according to the purpose. The amount that can be washed or dried in the same drum is greatly separated, and the expected function of integrated washing and drying cannot be fully exerted.

The current level is as follows: Washing volume ratio (load kg / drum volume l) = 9.5-10, Drying volume ratio = 18-23
Therefore, dry load kg / laundry dose kg≈0.5. That is, in a washing / drying machine capable of washing 6 kg of laundry, 3 kg
However, there is a problem that the upper limit is drying. The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a fully automatic washer / dryer capable of drying laundry by effectively utilizing information on the amount of laundry measured in the washing process. Is.

[0011]

SUMMARY OF THE INVENTION According to the present invention, there is provided a drum, which is rotatably supported in a water tank and has a plurality of through holes for water and ventilation in a peripheral wall, a motor for rotating the drum, and a washing machine. In a fully automatic washer / dryer including a control means for controlling the rotation of the drum in each of the dehydration and drying steps, the control means detects the amount of laundry in the drum in the washing step by detecting the current supplied to the motor. The measuring means for measuring, the storing means for storing the amount of laundry measured by the measuring means, and the drying time setting means for setting at least the drying time in the drying step corresponding to the amount stored in the storing means It is a fully automatic washer / dryer that can change the drying time according to the amount of laundry.

In the above structure, the measuring means measures the amount of laundry from the energizing current of the motor for rotating the drum in the washing process, and stores it in the storage means. In the drying step, the drying time setting means sets the drying time corresponding to the amount stored in the storage means. Overdrying of the laundry is prevented by performing the drying process with the set drying time.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an illustrated embodiment. The present invention is not limited to the embodiments. 1 and 2 are schematic mechanism diagrams showing a drum type fully automatic washer / dryer according to an embodiment of the present invention. As shown in FIGS. 1 and 2, a drum type fully automatic washer / dryer 1
Is a water tank 5 that is suspended by a spring 3 and supported by an absorber 4 inside an outer box 2 that is the exterior thereof, and a water tank 5
And a drum 7 which is rotatably supported around the horizontal shafts 6 and 6'and accommodates the laundry W therein. The horizontal shaft 6'of the drum 7 can be fixed to the water tank 5 such that the horizontal shaft 6'can be rotated forward / reversely on one side wall surface of the drum 7 and the forward and reverse rotations are individually prevented from rotating. The system bearing mechanism 9 is rotatably provided in the water tank 5, and the bidirectional fixed bearing control device 8 is configured to control rotation / fixation. The drum 7 is rotatably supported by a bearing 1010 ', and the horizontal shaft 6'supports a rocking disk 11 provided adjacent to the side wall of the drum so that the rocking disk 11 is rotatable and can be fixed in forward and reverse rotation of the drum 7. The swing disk 11 has projections 11a for stirring laundry in a washing process or a drying process,
A plurality of 11a are provided, and oscillating disk circulation air holes H ₁ , H ₂ ... H through which the circulation air for drying passes in the drying process.
Many _n are provided.

The bidirectional rotary bearing control device 8 and the bidirectional fixed type bearing mechanism 9 have the principle mechanism shown in FIGS. 3, 4 and 5, and FIG. 3 is a schematic configuration diagram showing the entire mechanism. 4 and 5 show bar-shaped bearings 9a, 9
FIG. 6 shows a state diagram in which positions b and 9c are position-controlled by control pins 52a, 52b, and 52c in the bearing case 52 of the bearing mechanism 9. That is, FIG. 4 shows that the control pins 52a, 52b, 5 are inserted into the bearing case 52.
2C is a schematic cross-sectional view of a state in which 2c is inserted, and FIG. 5 shows control pins 52a, 52b, 52 in a bearing case 52.
3 is a schematic state cross-sectional view when c is not present. The magnet 54 receives a signal from the control device MC shown in FIG. 12, and controls the pin fixing plate 53 having the control pins 52a, 52b, 52c fixed thereto by the plunger 55 so as to be freely taken in and out. Spacers 56a, 56b, and 56c are provided between the rod-shaped bearings 9a, 9b, and 9c to improve the movement of the bearings. In FIG. 5, which shows that the horizontal shaft 6'is rotated in either the forward or reverse direction, the two bearings 9a, 9b,
One side of 9c (clockwise or counterclockwise, respectively)
Is locked and the drum 7 tumbles the laundry W in either forward or reverse directions, and the rocking disk 11 does not rotate with the laundry W on the drum 7 and keeps its position. Further, in FIG. 4, the control pins 52a, 52b,
The rod-shaped bearings 9a, 9b, 9c sandwiched by 52c do not hinder the rotation of the horizontal shaft 6 '.

The drum 7 has a cylindrical shape, and is controlled by a DC motor 12 mounted on the water tank 5 to control the controller MC.
Rotation is performed by a signal from (FIG. 14), and the rotation sensor 43 detects the number of rotations and performs normal rotation or reverse rotation control at a designated rotation number. In the washing process, the drum 7 is controlled for washing (tumbling washing) at a rotation speed ωs that is lower than the critical rotation speed ωo for tumbling the laundry W, or is washed at a rotation speed ωh that is higher than the critical rotation speed ωo. The washing power is controlled by light washing and washing in which the washing liquid is allowed to pass through while being stuck on the drum wall. Alternatively, the oscillating disk 11 is fixed and external force (mechanical force) is applied to the laundry W while the tumbling by the drum 7 provides the washing power. The operation is controlled as an enhanced high cleaning method. The critical rotation speed ωo is obtained by the following formula, that is, mg = mrωo ² (1)

[0016]

[Equation 1]

Here, m is the mass of the laundry, r is the radius of the drum, and g is the acceleration of gravity. Therefore, the critical rotation speed ωo and the rotation speed required for tumbling are the vibrations of the drum 7 (the laundry W
If the distribution in the drum is not uniform and the mass distribution is not uniform, the combined mass center of gravity of the laundry W is
The force F generated due to (existing on 6 ′ and causing vibration) is obtained by the following equation, that is, F = M + m _A rω ² sin ωt (3) However, m _A shows an unbalanced mass.

Since the sum of the suspended masses of the water tank 7, which is supported by the spring 3 and the absorber 4, the drum 5, the DC motor 12, etc., is M, concrete blocks, iron blocks, etc. are used as vibration damping weights in the water tank. It mounted Although it is possible to mitigate the total weight was greater (M»m _a rω ² sinωt) vibration of the vibrating body, is not preferred weight of the machine body becomes heavy.

In the present invention, since the rotation speed of the DC motor 12 can be freely set, the laundry W in the drum 7 can be set.
Rotation of the drum 7 (ω >> ω0) by making the distributed mass of the drum 7 uniform (the position of the composite center of gravity of the laundry W distributed in the drum coincides with the horizontal axes 6 and 6 ').
It is possible to make the vibration at time close to the vibration at no load. As the laundry W in the drum 7 is gradually attached to the peripheral wall of the drum 7 as the rotation speed of the drum 7 increases, the pattern until all the laundry W is distributed in a donut shape and the flow chart of the control at that time are shown in FIG. As shown in.

In the dewatering step, as shown in FIG. 6, the laundry W tumbled in the drum 7 is gradually adhered and fixed to the peripheral wall of the drum as the rotation of the drum is accelerated. The inner ring diameter of the attached clothes is reduced, and eventually all the laundry is attached to the inner surface of the peripheral wall of the drum 7. If the mass distribution of the laundry W is good, the center of gravity of the laundry distributed in the peripheral wall of the drum 7 will coincide with the axes of the horizontal shafts 6 and 6'which support the drum 7 for rotation, and centrifugal dehydration (800 ~
Even at 1000 RPM, only a very low vibration occurs. In the dewatering process, the horizontal shaft 6'fixing the rocking disk 11 is controlled to be rotatable forward and backward (state of FIG. 4), so that the rocking disk 11 is carried by the drum 7 and the laundry W. Rotate synchronously.

In FIG. 6, the washing process (step S
1), a rinsing process (step S2) and a draining process (step S3) are sequentially performed, and then the drum 7 is, for example, 50 times.
It is rotated at a low speed of r.p.m. (step S4). In this low speed rotation, the laundry W is loosened by tumbling and becomes as shown in FIG. After that, the DC motor 12 is controlled to perform balance rotation control so that the rotation speed of the drum is, for example, 60 to 120 rpm (step S5). The vibration sensor 42 detects the vibration of the drum 7 in the vertical direction and the horizontal direction (step S
6) If the vibration is large, execute step S4 again,
If it is small, the high-speed dehydration process (step S7) is executed. After this, the process proceeds to the drying process (step S8).

In the drying process, the rocking disk 11 is controlled so as to be rotatable (FIG. 4) or fixed (FIG. 5) with respect to the forward and reverse rotation of the drum 7, and the drum 7 rotates. The number ω depends on the signal from the control device MC and ω ≦
It is operated at a predetermined rotation speed under the condition of ωo and the condition of ω> ωo. The drum 7 is driven by the DC motor 12 as described above, but the driving force for forward / reverse rotation is generated by the lower pulley 13, the belt 14, and the upper pulley 15 on the horizontal shaft 6.
And the drum 7 is rotationally driven in both forward and reverse directions. The horizontal shaft 6 is supported by a bearing 10 '. On the peripheral wall of the drum 7, the drum wall hole 16, as a part of the warm air supply means, and as an inlet / outlet for washing water,
17 are provided. A fan motor 19 for blowing air is provided as a part of the blowing air circulation means in the warm air circulation path 18 outside the water tank 5 in the outer box 2.

The blower ducts 20 and 21 including the blower fan motor 19 have a sprinkler 23 for spraying dehumidified water supplied from the dehumidified water feed valve 22 from one side wall to the other side wall of the water tank 5. They are connected in a closed pool shape via a dehumidifier 24, and the circulating air L flows in the direction of the arrow to form the side wall holes 2
5a, 25b and oscillating disc circulating warm air holes H ₁ , H ₂ ...
Warm air is circulated through H _n to dehumidify and dry the laundry W.

The laundry W and the detergent put into the drum 7 by opening the exterior lid 26 and the drum lid 27 are mixed with the water supplied from the water supply valve 28 and the water supply hose 29 into the water tank 5, and are mixed by the water level sensor 32. The lower part of the drum 7 whose regulated amount is regulated is submerged in water to immerse the laundry W, and the washing process is started. In the washing process, the laundry W is impregnated with washing water by tumbling by the rotation of the drum 7.
The water level in the water tank 5 is lowered by the amount of water absorbed by the water level sensor 32, and the reduced water level is detected by the water level sensor 32. The amount of water absorbed by the laundry W is in the order of cotton> blended spinning> synthetic fiber.

When the washing process is further continued, the bubbles in the clothes are expelled, and the apparent water level is further reduced, and the water level sensor 3
2 again detects the water level. Replenishment water is supplied from the water supply valve 28 only for the reduced water content, and the supplied water supply amount is calculated by the controller MC and used as data when the quality and quantity of the laundry W are fuzzy inferred by the fuzzy inference unit in the control board. ..

DC motor 1 attached to water tank 5
Since No. 2 is controlled by the PWM method by the PMW control device 12 'through the control circuit MC, the current value automatically increases when the rotational driving torque of the drum 7 increases, and the rotational control is performed while maintaining a predetermined rotational speed. To be done. That is, although there is a large difference between the required rotational torque when the laundry W is lifted to the upper part of the drum 7 by the baffle 44 in the drum 7 half rotation and when the laundry W drops half the rotation,
A stable drum rotation speed can be obtained by the WM control.

Since laundry of cotton has a high water content and a relatively high density, a large rotating torque is required even with a small load, but synthetic fibers also have a low water content and are more bulky than cotton even after the water content. Due to its large size, a small rotating torque is sufficient even if it has the same mass as cotton. This is because the combined center of gravity of the laundry W approaches the axis of the drum 7. When the laundry W near the laundry storage capacity limit of the drum 7 is in the drum 7, it is always bulky upward due to the horizontal shafts 6 and 6'of the drum 7. It is relatively small and may show the same value as the rotation torque when the laundry W is small, but the amount of water reduction during water supply is large. The amount of laundry W is determined based on two types of data, the water reduction data and the current value data required for the rotation torque.

The value of the current supplied to the DC motor 12 is stored in the control unit MC and is calculated by the control unit MC to obtain the data when the quality and quantity of the laundry W are fuzzy inferred by the fuzzy inference unit in the control board. Used as. A water reservoir WTK is provided below the water tank 5, and the water reservoir WTK
The heater 30 is provided so as to be submerged in water regardless of which of the washing course and the steam refreshing course is selected. However, when the steam refresh course is selected, the water level is controlled by the rotation of the drum 7 so that the water surface does not come into contact with the outer peripheral wall of the drum 7. In the drying process, the heater 30 is heated in air, but heat resistance is taken into consideration. At the end of drying, the temperature of the laundry W becomes high and the laundry W is heat-damaged, or the thermistor 37 provided in the air circulation system is installed so as to prevent the laundry W from being over-dried and the cooling process being prolonged after the laundry is finished. Based on the data of the temperature change Δt detected by the controller MC, the controller MC calculates and the supply current value is controlled. The steps of this control will be described later.

In the setting process of the laundry W and the washing process, after the water level sensor 32 sets a predetermined water level, the heater 30 is energized to start heating the washing water. When the water temperature sensor 31 detects the water temperature and determines that the temperature is sufficient for washing, the heater 3
In some cases, heating by 0 may not be performed. The temperature of the washing water is detected and controlled by the water temperature sensor 31, and is used as data for fuzzy control by determining the length of time for placing the rack, the strength of the washing in the washing process, and the fuzzy control of the length of the washing time. Be seen.

During the rack placing process, the drum 7 rotates intermittently (about half a rotation) to maintain good contact between the washing liquid and the laundry W and activate the enzyme so that fuzzy reasoning is performed and fuzzy washing is performed. It is designed to enhance cleaning by control. Detergent enzymes are generally activated at about 10 ° C, peak at 30-40 ° C, and gradually deactivate at 50 ° C or higher.

During the washing with a pot, the intermittent operation is increased when the water temperature is relatively low, and the water temperature is high at 35 to 40 ° C.
Then, by reducing the number of intermittent operations, the total sum of activation by mechanical force and activation by temperature is made approximately the same, and when the water temperature is low, the fuzzy inference is performed so that the soaking time is long and the number of intermittent operations is increased to bring out the enzyme effect. Fuzzy controlled. When the washing is completed, the drain valve 33 is opened to drain water from the drain hose 33A, and then the dehydration process is performed.

As described above, the drum 7 is the DC motor 1
60 rpm to loosen the unevenness of the laundry W rotated at about 50 rpm and loosen the lump of cloth due to the entanglement and then distribute it evenly on the peripheral wall of the drum 7.
Approximately 120 times from the above loosening rotation, the speed is increased to 120 rpm while rotating at a predetermined rotation speed for a predetermined time.
A vibration sensor 4 fixed to a water tank 5 for the vibration value v generated in each step up to rpm and for detecting vibration in the vertical direction and the horizontal direction.
2 and compares it with the vibration level stored in the controller MC in advance, and fuzzy infers whether or not the distribution state of the laundry W in the drum 7 is good, and performs high-speed rotation (ω
>>> ω0) or the control device MC determines whether it is necessary to make the distribution of the clothes uniform by performing the initial loosening rotation again to reduce the vibration during high-speed rotation.

The controller MC judges that the balance rotation control of the drum 7 (about 60 rpm → about 70 rpm → about 80 rpm)
.. (about 120 rpm) is input to the control device MC and is compared with a specified value to be calculated, and fuzzy inference / fuzzy dehydration operation is performed. Then, the control device MC outputs a signal for starting the automatic operation of the drying process. That is, the DC motor 12 is operated, the heater 30 is energized, and the rotation of the drum 7 causes rotation of the drum 7 between the outer peripheral wall of the drum 7 and the inner peripheral wall of the water tank 5 to generate a rotating flow of air 3 due to the rotation of the drum 7.
5 is generated, and the air heated by the heater 30 is introduced into the drum 7 as the introduction air 36 through the drum wall hole 17.

When the laundry is sufficiently heated after a lapse of a predetermined time (depending on the amount of laundry), the drum air temperature sensor 40 provided in the water tank 5 detects a specified temperature and blows air. The fan motor 19 is driven, circulation air is started, circulation air 34a, 34b, 34c is generated, mixed with the warm air 36 introduced into the drum 7, and after the evaporation is prompted, by the water spray 24A from the dehumidifier 23. Dehumidified.

The wet mixed gas 34c is sprinkled with water 24A.
When the laundry W is dried in accordance with the temperature characteristics of the thermistors 37 and 38 as shown in FIG. 7, the drying process reaches the drying end period after the constant rate drying period. Then, the temperature of the laundry W starts to rise, and if it is left as it is, after the drying of the laundry W is completed (100% dry), the temperature of the laundry W becomes high and becomes overdried (104 to 107% dry). In order to prevent the unnecessary temperature rise of the laundry W, the temperature change of the thermistor 37 is detected, the input current of the heater 30 corresponding to the temperature rise is controlled so as to be reduced, and stored in the controller MC. Drying is completed by maintaining the temperature of the laundry in the drum at about the same temperature as the constant rate drying period temperature. The fact that the laundry is heated to a high temperature or is over-dried is conventionally carried out intentionally in order to eliminate unevenness in drying, but in the present invention, the swing disk 11 resists the rotation of the drum 7. Is fixed or the signal of the thermistor 37 is calculated to control the current value of the heater 30, so that the laundry is well dried and there is no need to overdry or raise the temperature.

After the drying is completed, the power supply to the heater 30 is stopped, and the laundry is cooled down by the blower fan motor 19 to reach a predetermined temperature and the drying is completed. FIG. 7 shows the progress of the current control to the heater 30 and the temperature change of the thermistor 37 after the constant rate drying period, and the temperature change when the heat output of the heater 30 is changed during the constant rate drying period.
It will be described below based on. The figure shows the temperature t measured by the thermistor 37. Conventionally, after the temperature drying measured by the two thermistors is completed, the temperature is controlled so that the drying is completed when the temperature difference reaches a set value ΔT.

In the present invention, when the drying progresses and the temperature change Δt of the thermistor 37 becomes substantially zero, the controller MC stores the constant rate drying temperature CT. After that, when the temperature change Δt of the thermistor 37 is detected, the control device MC calculates the heat output of the heater 30 almost commensurate with the temperature rise, and reduces the heater current value of the heater control device 31 to control.
If the laundry W has been dried, the temperature of the laundry W will rise again after a while, and the heater current value will be controlled to decrease so that the temperature does not rise further. This temperature change detection and current control are repeated to balance the heat radiation loss calorie corresponding to the heat radiation loss from the air flow path or the water tank and the heat supply from the heater 30, so that the laundry becomes hotter than necessary and overdried. The temperature of the laundry W is maintained at a substantially constant drying temperature CT without causing any change. Therefore, no wasteful power is consumed for the dry finish, and no wasteful time is required for the cooldown after the completion of drying. When the current value to the heater 30 is intentionally reduced during the constant rate drying period, the thermistor 3 is affected by the heat of evaporation of the laundry W.
The temperature t of 7 rapidly decreases, but when the drying end period is approached, the temperature decrease becomes gentle because the laundry W contains less water. Then, when the output of the heater 30 is returned to the original value, the thermistor 3 is used in the early and middle stages of drying with a high water content.
The recovery of the temperature t of 7 is gradual, and the recovery becomes steeper as it approaches the drying end period. For example, in the ironing course, when it is desired to finish at a desired degree of dryness of about 80 to 90% before complete drying, the heat output of the heater 30 is changed to store the changing speed of the temperature t of the thermistor 37 in the ROM in advance. The degree of dryness of the laundry W can be detected by performing a comparison calculation with the temperature change rate.

Since the capacity of the laundry W detected at the time of washing is stored in the controller MC, it is possible to roughly predict the end of drying period in the continuous process from washing to drying.
The heat output to the heater 30 is frequently changed and the thermistor 37
It is not necessary to detect the temperature change of the temperature t. Then, the drying is advanced by the fuzzy inference / fuzzy control, and the heat output of the heater 30 is intentionally changed when the drying end period is approached, and the change rate ΔT of the circulating hot air temperature t temperature.
By inferring the progress of drying from u, it is possible to finish the drying at a desired degree of drying.

Further details will be described with reference to the flow charts shown in FIGS. First, the heater 30 is energized (step s301), and when the temperature rise of the thermistor 37 starts, the temperature rise rate ΔTu is detected and stored in the control device MC (microcomputer) (step s302). When the drying reaches the constant rate drying period, the temperature change of the thermistor 37 disappears (Δt ₂ ≈0) and the constant rate drying temperature is stored in the microcomputer as CT (step s303). Then, when the constant rate drying period changes for a while at a constant temperature and the temperature change Δt is detected (step s304), the microcomputer controls (decreases) the current to the heater 30 (step s305). Then, the state of the temperature t of the thermistor 37 is checked in steps s306 and s3.
07, s308, and control the progress to the drying end step (step s309) depending on the temperature change state, or continue the operation for a preset time to proceed with the drying (step s310) and then finish the drying step. The process proceeds to (step s309).

Disturbance during constant rate drying (laundry W in the drum W
When the temperature temporarily rises due to the temporary tumbling of the thermistor) or the like, the temperature t of the thermistor 37 is rapidly lowered due to the decrease in the heat output of the heater 30, and becomes lower than the CT stored in the microcomputer. Therefore, the heat output of the heater 30 is increased (restored) (step s31
1) After checking whether the detected temperature t has recovered to the CT stored in the microcomputer (step s312), step s304 is executed and the drying is controlled while controlling. Therefore, it does not become undried or overdried.

On the other hand, in the ironing course, etc., FIG.
When the user wants to finish the drying with the degree of dryness desired by the user (steps s313a, s313b, s313).
c, s313d) and the like. In this case, control is performed to intentionally change the heat output of the heater 30 (step s31
4) Then, the temperature drop rate ΔTD is stored in the microcomputer (step s315), and then the supply current to the heater 30 is restored (step s316).

The rate of increase in temperature recovery ΔTu is compared with ΔTm stored in the microcomputer to fuzzyly infer the dryness.
The process is ended while performing fuzzy control (step s31).
3a, s313b, s313c, s313d). Here, F1, F2, F3, and F4 are coefficients, which are experimentally obtained by the unique coefficients of the apparatus of this embodiment. In the present embodiment, when the non-tumbling drying (rotating the drum at the critical rotation speed or more) course is selected, drying unevenness is likely to occur particularly when the load is small, and the constant rate drying period is short and short. The temperature t of the thermistor 37 changes. In this case, when the temperature rise Δt is detected, the rotation speed of the drum 7 is ω <
After rotating down to ωo (critical rotation speed), the clothes are tumbled by the drum 7, the state of the clothes distribution is changed, and the operation is performed again at the non-tumbling rotation speed (ω> ωo) to advance the drying. Then, the rotation speed is automatically changed until the drying is completed. It also has a heater 30 control function capable of performing the above-described drying operation by selecting the output of the heater 30 as strong, medium, or weak depending on the type and amount of load.

The non-tumbling (ω> ωo) drying will be described below in detail with reference to the flowcharts of FIGS. 10 and 11, and the heater 30 is turned on (step s44).
0), the drum 7 rotates non-tumbling (ω> ωo) (step s441), and the non-tumbling drying process starts. Based on load data (load capacity, cloth quality, rinsing water amount, dehydration degree, etc.) and manual input data in the washing process, the microcomputer calculates and approximates the dry time fuzzy, and the output of the heater 30 is strong / medium / weak. Is selected (step s442). The temperature rise of the laundry W is detected (step s443), and the temperature rise rate Δ
Tu is stored in the microcomputer (step s444). The subsequent temperature change is detected (step s445), and when the temperature becomes almost constant, the constant rate drying temperature CT is stored in the microcomputer (step s446). After that, the temperature change is observed (step s447), and when the temperature rise is recognized, the drum rotation speed is controlled to the tumbling rotation speed, the operation is performed several times (step s448), and then the non-tumbling rotation speed is returned again (step s449). .. From step s447 onward
S449 may be repeated.

Then, the subsequent process is operation-controlled by the above-mentioned steps s304 to s312 to complete the drying. FIG. 12 shows changes in the temperature of the laundry and current values during normal drying. When the temperature change in the drying completion period is detected and the current value to the heater 30 is reduced,
Steps s306, s307, s308, s309,
Drying is completed by s310.

FIG. 13 shows a change in current and a change in temperature when the current value of the heater 30 is lowered in order to check the dryness (steps s314 to s31 in FIG. 9).
6) illustrates the process of automatically reaching the drying end period after the first change in current and drying. In some cases, the current change may be intentionally and automatically performed multiple times to predict the desired degree of dryness.

FIG. 14 is a block diagram of the controller.
Various processes of the fully automatic washing and drying machine selected by the user from the operation panel 34 are input to the control circuit MC including a microcomputer, ROM and RAM, and various sensors (thermistor 37, water level sensor 32, drum wind temperature sensor 4).
0, the vibration sensor 42, the rotation sensor 43, and the water temperature sensor 31), the control circuit 32 controls the heater 30, the motor (the DC motor 12, the blower fan motor 19) and the like.

15 to 22 show a system control flowchart of the fully automatic washer / dryer of one embodiment of the present invention, which is controlled based on the control device configuration of FIG. 14, which will be described in detail below. Explaining the "mounting step" which is the first step in FIGS. 15 to 16, the start switch of the operation panel 34 is turned on (step s501). Water is supplied from the water supply valve 28 (step s502), the drum is rotated after the water level sensor 32 controls the water level to the specified level, and tumbling of the cloth (step s503) is started. The water reduction amount is detected (step s504), and after the operation for a certain period of time, the water level sensor 32 detects the latter period water reduction amount again (step s505). In FIG. 23, 17a indicates a water reduction curve of cotton,
b shows the water-reduction curve of synthetic fibers. Generally, cotton-based clothing has a large initial water-reduction amount (17a ₁ ), and the air contained in the clothing or the fiber portion in the clothing after sufficient water is contained in the clothing. (Bubbles) are expelled and the late water reduction amount (17a ₂ ) is detected. When there are many synthetic fibers, the initial water reduction (17b ₁ )
The amount of water loss in the latter half (17b ₂ ) is slightly less than that of cotton. Then, the total amount of water reduction is detected, and the initial value /
The whole is calculated, and the amount of clothing (step s507) and the quality (step s508) are estimated by fuzzy inference (step s506) from the total amount of water reduction. Then, the reduced water is replenished from the water supply valve 28 and the detergent is added (step s509). Then, the washing process is started, and the water temperature sensor 31 detects the water temperature (step s51).
0). Washing time (step s5) by fuzzy inference (step s511) from data of quantity and quality of clothes and water temperature
12) and the washing strength (step s513) (whether only tumbling or a combination of a stirrer and tumbling) are fuzzy controlled. Since the detergency of the detergent enzyme is greatly affected by the water temperature, the soaking time (step s514) is determined from the water temperature data, and the drum 7 is used during the soaking time.
Rotates (step s515) to help activate the enzyme action.

On the other hand, when the hot water course is selected because the water temperature is low in step s510, the designated temperature (step s5
16), the soaking time (step s517) is determined, and after the soaking time, the soaking process ends. Next, the washing process will be described with reference to FIGS. 17 to 18. There are cases where the washing process starts from the soaking and placing process and sometimes starts from the direct washing process. It is determined whether or not it is continuous from the soaking step (step s518), and when starting from direct washing, the same detection check as in steps s502 to s509 is performed. Fuzzy washing time (step s512), fuzzy washing strength (step s513)
By doing so, a safety check is performed to see if foam has been abnormally generated in the washing process in which washing (step s519) proceeds (step s520), and the fuzzy washing time determined based on the water temperature, the quality and quantity of clothes, etc. ends ( Step s521)
Then, the washing process is completed.

The rinse dehydration process will be described with reference to FIGS. 19 to 20.
After step 2) is completed, the drum 7 is operated at a speed of about 50 rpm for a prescribed time in order to loosen unevenness or entanglement of the clothes (step s523). At this time, the rocking disk 11 rotates synchronously with the drum 7 as the laundry is washed. The amount of clothing specified in step s506 (step s50
7), quality (step s508) to step s50
From the water reduction amount (initial value / total) of 4 to s506, a chart of the appropriate rotation number of the drum 7 for evenly distributing the laundry on the peripheral wall of the drum 7 is obtained by fuzzy reasoning (step s52).
4) and the chart is determined (step s525), and the DC motor 12 drives for the time determined by the determined drum rotation speed ω. For example, in the case of laundry of 1 kg of cotton shirt and 1 kg of synthetic fiber underwear for a total of 2 kg, the total between the drum rotation speed and the time is 60 rpm = 10 seconds, 70 rp.
m = 15 seconds, 80 rpm = 10 seconds, 90 rpm = 5 seconds,
100 rpm = 2 seconds and 120 rpm = 5 seconds, and clothes stick to the peripheral wall of the drum 7 as the drum rotation speed increases. Then, the stage in which the sticking proceeds (step s5
26), the drum amplitude and amplitude deviation (step s52
7, s528) is detected, and based on this data, it is fuzzy inferred (step s529) whether or not the drum 7 is transferred to the centrifugal high speed rotation (about 800 to 1000 rpm).
An O or NOT signal is output (step s53).
0). If it is larger than the specified value, the drum rotation speed is lowered, and the drum is accelerated again to 120 rpm from the loosening step (step s523) to check the state of drum vibration.

In step s524 of Fuzzy3, in addition to the quality and quantity of the clothes that have already been read in, fuzzy inference is performed based on the data that contributes to the determination of quality and quantity, that is, the accuracy of quality and quantity. Up. Since the water temperature during dehydration affects the drying time, the water temperature can also be detected. Although the washing process and the rinsing step are omitted here, rinsing water supply → drainage → intermediate dewatering is performed after drainage. The vibration amplitude data (s531) in this intermediate dehydration process is also calculated in step 5
Used in 29.

Transition to centrifugal high-speed rotation In the case of GO determination,
The drum rotation speed is further increased, and the amplitude is checked (step s533) at a drum rotation speed slightly smaller than the resonance vibration rotation speed of the device, for example, 180 rpm (step s532), and the high speed rotation speed determined by Fuzzy4 (step s534). The operation is controlled (step s536) for the time determined in step (step s535). Vibration abnormalities due to imbalance during high-speed dehydration are checked (steps
537) Dehydration is completed. If the vibration is abnormally high, the safety device operates and the dehydration process is stopped.

The drying process will be described in detail with reference to FIGS. 21 to 22.
The basic rotation speed for drying is set (step s538) based on the output data of the amount of clothes of zzy1,3. The heating movement of the laundry is started (step s539), and the initial temperature, the initial temperature rise rate, the water temperature at the end of the dehydration and the Fuzzy1,3,3.
Fuzzy inference is performed by the input from 4 (step s54
0) The drying time until the end of drying is fuzzy controlled, the remaining time is displayed, and the remaining time is corrected depending on the condition of the initial temperature rise rate (depending on the amount of laundry and the water content, that is, the degree of dehydration).

When the initial warming period ends, the temperature of the laundry is
Drying starts and changes at an almost constant temperature (constant rate drying period temperature). The time until the temperature reaches the constant temperature is counted, and the heat capacity of the load is calculated. That is, after being decomposed into a heat capacity according to the amount of clothes and a heat capacity for water content, the microcomputer calculates and analyzes the heat quantity necessary for evaporation, and then the time until the end of drying is calculated and the remaining time display is corrected.

The temperature of the laundry reaches the set value (step s
541), water for dehumidification is started to be supplied from the water supply valve 22, water sprinkling 24A is started, the fan motor 19 is operated, and dehumidification and drying are performed (step s542). Fu
The set time determined by zzy1 and 3 has passed (step s
Then, the speed of the drum 7 is increased (step s544). Then, the fuzzy drying operation (step s54) is a combination of drum rotations (low speed, high speed, reverse rotation, etc.).
5) is performed, and the state of the laundry in the drum is estimated by performing fuzzy inference (step s546) based on the data such as the temperature change by the thermistors 37 and 38, the temperature in the drum, and the input of the heater 30. Step s547).
When the drying progresses and the degree of dryness reaches about 80%, the ironing course is selected (step s548). This is because the course is instructed in advance and the desired degree of dryness (about 80% to 95%) is reached. It is performed by control operation control (step s549).

In the case of the standard course, the dryness is about 100.
After detecting that the percentage has reached (step s550),
Cool down to a predetermined temperature (step s55
1) Drying is completed. The thermistor 37, the water level sensor 32, the drum air temperature sensor 40, the vibration sensor 42, the rotation sensor 43, and the water temperature sensor 31 which constitute each measuring means.
Measurement values from the above are input to the arithmetic device 102 via the input / output device 101 in the control circuit MC.

In the present embodiment, six fuzzy control devices 80 (fuzzy inference functions Fuzzy1-6) are provided, and each block can freely output / input necessary data. The data input to Fuzzy 1 to 6 is the thermistor 37, water level sensor 32, drum wind temperature sensor 40, vibration sensor 42, rotation sensor 4
3, the current value of the water temperature sensor 31 and the motor control device.

In Fuzzy 1, the water level sensor 31
The fuzzy inference value is output by inputting and the fuzzy inference value is output as the cloth amount and the cloth quality. Fu in Fuzzy2
ZZy1 cloth quality and quantity output and the water temperature of the water sensor are input and fuzzy inference is performed for the placement time, washing time and washing strength, and the results are output. In Fuzzy3, the amount of cloth of Fuzzy1, the output of cloth quality, the water temperature of the water temperature sensor 31 and the value of the current supplied to the motor are input, and fuzzy inference is performed to output the balance dehydration chart and the time required for drying. Fuzzy4
In, the vibration value from the vibration sensor 42 is input, fuzzy inference is performed, and a comparison operation is performed to determine whether the vibration value is larger or smaller than the specified vibration value, to make a decision on high-speed rotation and a rotation speed operation chart.
The operating time is output. In Fuzzy5, Fuz
Fuzzy inference is performed based on the outputs of zy1, 3, 4 and the inputs from the thermistor 37 and the water temperature sensor 31, and the remaining time of the drying time is output. In Fuzzy6, the thermistor 37,
By inputting the drum warm air sensor 40 and the heater supply current value and performing fuzzy inference, the state of tumbling in the drum 7 is inferred and the rotation of the drum 7 is fuzzy controlled.
Then, the state of changes in the initial water reduction amount and the latter period water reduction amount at the time of water supply, the sum of the water reduction amount, the current value (change value) of the motor and the time until the temperature change of the thermistor 37 disappears (owning until Δt ≈ 0 The holding time until the drying is completed is highly accurately deduced by fuzzy inferring the (time) input, and is displayed on the operation unit by the signal of the microcomputer.

A fuzzy controller 80 (Fu) shown in FIG.
In zzy1 to 6), a control index value for fuzzy set evaluation is created in the preprocessing device 81, and the fuzzy inference device 82 inputs the control index value from the preprocessing device 81 to perform fuzzy inference. Fuzzy reasoning device 82
The output from is given to the fuzzy output determination device 83, and the output is the DC motor 12, the heater 30, the blower fan motor 1
The operation of each step is carried out by being given to the vehicle.

Here, while the operation is performed by fuzzy control, the detection data from each detector is input and compared with the specified value, and the difference is fuzzy inferred again to correct the specified value and the operation is continued. The fuzzy inference method by the fuzzy inference apparatus 82 is a generally performed membership function in the conditional part, a membership function in the conclusion part, and a fuzzy operation according to the control regulation using the input value.
A method is used in which a composite fuzzy set is calculated, the maximum value (Max) of the fuzzy set is used as an output compositing function, and the center of gravity of this output compositing function is used as the output of fuzzy inference.

Since the fuzzy control is performed in each step as described above, it is possible to operate with the optimum washing strength and washing time even if the washing conditions, that is, the amount and quality of the laundry, the water temperature, etc., change. It is possible to reflect the stain removal effect due to the action of water temperature and enzyme on the washing strength and washing time. Further, in the dehydration step, it is possible to fuzzyly select the washing strength and washing time suitable for the quality and quantity of the laundry. Data obtained during the washing process (data for estimating the quantity and quality of laundry by reducing the amount of water and data for estimating laundry by motor current value)
It is also possible to select a low-vibration dewatering chart that is predicted in advance to perform low-speed to medium-speed dewatering, estimate the uniform distribution state of laundry in the drum from its vibration value, and perform high-speed centrifugal dewatering under low vibration. it can.

In the drying step, the water content contained in the laundry is estimated from the possession time until the temperature rise rate of the thermistor becomes zero, or the laundry is dried by estimating the quantity and quality of clothes and the water content. The end time can be predicted. As a result, it is possible to efficiently check the dryness state at the end of drying. Further, it is possible to avoid the heat damage to the clothes and finish the drying to the desired degree of dryness.

[0062]

According to the present invention as described above, the following effects can be achieved. (1) Since the amount of laundry is measured in the washing process and the drying time is set based on the measurement data, the measurement data can be effectively used and overdrying of the laundry can be prevented.

(2) It is possible not only to wash clothes under low damage and dehydrate under low vibration conditions, but also to dry to a desired dryness under low damage. (3) By heating the washing water, the action of detergent enzyme is enhanced,
It is possible to reduce washing (mechanical strength) with a washing machine (washing time, washing strength). That is, by increasing the water temperature, the oxygen decomposition of dirt can be promoted, and it can be removed from soiled clothes with as little mechanical force as possible to shorten the washing time or weaken the washing strength by the washing effect of oxygen action. Is possible. When the water temperature is high, leave it as it is and decide the length of time to keep it in consideration of the water temperature, washing strength (tumbling washing or mixed washing combining the action of rocking disc) and washing time (drum). It is possible to easily carry out washing that suits the degree of dirt and washing with warm water that matches the type of laundry by deciding the operating time).

(4) By uniformly distributing the laundry on the peripheral wall of the drum in the process of accelerating the rotation of the drum beyond the tumbling critical rotation speed, the center of gravity of the entire laundry is made to substantially coincide with the drum axis. It is possible. If a vibration sensor is installed and the value is above the specified value, the tumbling operation is returned and the speed is increased again to detect that the vibration is below the specified value (the distribution of the laundry in the drum is uniform) and centrifuge.
By shifting to high-speed rotation (800 to 1000 rpm) for dehydration, low vibration can be easily ensured. Therefore, it is possible to reduce the weight without requiring a weight for preventing vibration.

(5) By adopting the DC motor by PMW control, the drum rotates under the fluctuation of the laundry in the drum (instantaneous fluctuation due to tumbling, that is, low torque when high torque falls when lifting by the baffle). Is 58 to 63 rpm, and in the dehydration step, it can be initially rotated at 60, 70, 80, 90, 100, 120 rpm for a certain period of time and then rotated at a high speed of 800 to 1000 rpm to complete the dehydration.
In addition to the basic rotation speed of 63 rpm, the rotation speed of 65 to 80 rpm can be freely set.

Further, in the drying step, if the tumbling rotation is reduced as much as possible to perform the drying, the external force (mechanical force) applied to the clothes is reduced and the damage can be reduced. That is, by adding a non-tumbling step in the drying step, the drying of the clothes can be promoted, and by occasionally adding a tumbling step, it is possible to lead to the end of drying while avoiding uneven drying of the clothes, which is suitable for delicate clothes drying. Also, by combining the rotation speed change by the DC motor and the normal / reverse rotation operation, it is possible to achieve a dry finish without unevenness in dryness.

As described above, the washing time, the washing strength, the rotation speed of the drum, the rotation mode, the vibration at the time of high-speed rotation, which are the objects of control of the present invention, are predicted, and "GO or NO" for that process
Fuzzy inference and control of the dehydration chart of the re-dehydration process including the judgment of “T” and the vibration analysis result of NOT in the case of NOT, and each output such as prediction of the time until the end of each process as a fuzzy set. Because the control output is evaluated and the control output is determined by fuzzy reasoning, stable washing / dehydration under various external factors (water temperature, amount of cloth, cloth quality, degree of dirt, distribution of clothes in the drum, etc.) Provide high added value that drying can be achieved without damaging clothes.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a drum type drying and washing machine shown as an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram when the drum wall surface of FIG. 1 is a front surface.

FIG. 3 is a schematic configuration diagram of a bearing that can rotate in both directions and is lockable in both directions according to an embodiment of the present invention.

FIG. 4 is a state explanatory view showing a state in which the bearing of FIG. 3 is position-controlled in a bearing case.

5 is a state explanatory view showing a state in which the bearing of FIG. 3 is position-controlled in a bearing case.

FIG. 6 is a state diagram showing a flowchart of drum rotation control in the dehydration process of the embodiment and a pattern of a state of sticking to the drum peripheral wall at each rotation speed.

FIG. 7 is a state diagram showing temperature characteristics of the thermistor of the embodiment.

FIG. 8 is a flowchart showing a method for detecting dryness in the drying process of the example.

FIG. 9 is a flowchart showing a method for detecting the degree of dryness in the drying process of the example.

FIG. 10 is a flowchart of a heater control method according to the embodiment.

FIG. 11 is a flowchart of a heater control method of the embodiment.

FIG. 12 is a characteristic diagram showing a temperature change and a current value of the laundry in the drying process of the example.

FIG. 13 is a characteristic diagram showing the relationship between the heater current and the drying temperature when the heater current is changed in the embodiment.

FIG. 14 is a block diagram of a control device in the embodiment.

FIG. 15 is a flow chart showing an operation state of a rack placing step in the embodiment.

FIG. 16 is a flow chart showing an operation state of a rack placing step in the embodiment.

FIG. 17 is a flowchart showing an operating state of a washing step in the example.

FIG. 18 is a flowchart showing an operating state of a washing process in the example.

FIG. 19 is a flow chart diagram showing an operating state of a rinsing / dewatering process in an example.

FIG. 20 is a flow chart showing the operating state of the rinsing / dehydrating process in the example.

FIG. 21 is a flow chart showing the operating state of the drying process in the example.

FIG. 22 is a flow chart showing the operating state of the drying process in the example.

FIG. 23 is a characteristic diagram showing a change in water reduction in the process in which laundry is put in the drum of the embodiment to supply water and the tumbling operation is performed.

FIG. 24 is a characteristic diagram showing an amplitude state when a laundry is put in the drum of the embodiment and balanced.

FIG. 25 is a block diagram of a fuzzy inference apparatus according to an embodiment.

[Explanation of symbols]

 1 Main body of fully automatic washer / dryer 5 Water tank 6 Horizontal shaft 7 Drum 8 Bidirectional fixed bearing controller 11 Swing disk 12 DC motor 19 Blower fan motor 20,21 Blower duct 30 Heater 31 Water temperature sensor 32 Water level sensor 34a, b , C Circulating air 35 Rotating air flow 36 Introducing air 37 Thermistor 40 Drum warm air sensor 42 Vibration sensor 43 Rotation sensor 80 Fuzzy control device 81 Pre-processing device 82 Fuzzy inference device

Claims (1)

Claim: What is claimed is: 1. A drum, which is rotatably supported in a water tank and has a plurality of through holes for water and ventilation in a peripheral wall, a motor for rotating the drum, and a drum for washing, dehydrating and drying. In a fully automatic washer / dryer including control means for controlling the rotation of the drum in each step, the control means measures the amount of laundry in the drum in the washing step by detecting the energizing current of the motor. And a storage means for storing the amount of laundry measured by the measuring means, and a drying time setting means for setting at least a drying time in the drying step corresponding to the amount stored in the storage means. Fully automatic washer / dryer with variable drying time according to