JPH0819684A - Drum type washing dryer - Google Patents

Abstract

PURPOSE:To provide a washing machine capable of washing and drying a blanket with good finishing. CONSTITUTION:A blanket course to perform washing, rinsing, dewatering and drying is set on this drum type washing machine. During washing and rinsing, the water level is kept higher than the standard level and the drum is reversely rotated within 2 turns and the rest time between reverse turns of the drum 4 is set longer than the rotation time. Rinsing is performed with water feeding by only the volume of the water overflown from the overflow opening 40. After completion of washing and rinsing, intermediate dewatering is performed by turning in a rotation direction with smaller quantity of unbalance selected by detected unbalance quantity. Corresponding to the quality of the blanket, drying is performed in succession or after stopping for a time, but when the cloth volume of the blanket is smaller than a designated one, the operation from washing to drying is carried out in succession regardless of the quality of the blanket.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention covers from washing to drying in 1
More specifically, the present invention relates to a drum type washer / dryer which is operated by two drums, and more specifically to an operation control for washing and drying a blanket.

[0002]

2. Description of the Related Art A drum type washer / dryer has a structure in which a drum rotates about a horizontal axis in a water tank. Since washing and drying can be performed by the same drum, washing, rinsing, dehydration and drying are performed. It has become a typical washing and drying machine that combines functions.

A conventional drum type washer / dryer is shown in FIGS. This drum type washer / dryer has a double structure of a water tank 2 installed in an outer box 1 and a drum 4 supported inside the water tank 2 so as to rotate around a horizontal shaft 3. The water tank 2 is suspended from the outer box 1 by a spring in order to absorb vibration during operation, and has a function of storing and discharging a washing liquid and a rinsing liquid. The drum 4 is formed with a large number of small holes 5 aligned on the entire peripheral wall thereof so as to allow water supply during washing, drainage during dehydration, and ventilation during drying.

An inlet / outlet opening 7 communicating with the opening 6 of the drum 4 is formed on the front surface of the water tank 2, and a door 8 for loading / unloading laundry is attached to the front surface of the outer box 1 so as to be openable / closable. The door 8 has a structure in which the space between the door 8 and the inlet / outlet 7 of the water tank 2 is sealed by a packing 9, and is automatically locked so as not to open during operation. Further, an operation panel 10 including operation keys and a display unit is provided on the front upper part of the outer box 1, and a control circuit is attached to the back side of the operation panel 10.

On the lower surface of the water tank 2, a motor 1 capable of forward and reverse rotation is provided.
1, a belt 14 is wound between a motor pulley 12 and a driven pulley 13 fixed to the horizontal shaft 3,
A driving device for rotating the drum 4 is constituted by these components, the driving force of the motor 11 is transmitted to the drum 4, and the drum 4 is rotated normally.

A water supply passage 16 having a water supply valve 15 as a water supply device is arranged above the water tank 2, and the water supply passage 16 communicates with the lower portion of the water tank 3 along the rear surface of the water tank 3. A water level sensor 18 is connected to the lowermost part of the water tank 3 via a pipe 17, and the water level is detected by a pressure fluctuation in the pipe 17 that fluctuates depending on whether the water level is high or low. In addition, the water supply channel 16
Is branched from the immediate downstream of the water supply valve 15, and a hot air duct 19 communicating with the upper part of the water tank 2 is formed. The drying heater 2 for warming the drying air in the hot air duct 19 is formed.
0 and a blower 21 for circulating hot air are provided, and serve as a circulation path from the hot air duct 19 through the water tank 2 to the water supply passage 16 and again to the hot air duct 19.

A drainage hole 22 is formed on the lower surface of the water tank 2, and a drainage path 23 communicating with the outside of the machine is connected to the drainage hole 22. In the drainage channel 23, a thread waste filter 24, an opening / closing valve 25, and a drainage pump 26 are provided in this order to form a drainage device. The lint filter 24 is detachable and can be removed from the lower front portion of the outer box 1. In the figure, 27 is a washing heater for heating washing water to perform hot water washing, 28 is an injection nozzle for injecting a washing liquid or a rinsing liquid on the laundry, and 29 is a clogging state of the thread waste filter 24. It is a sensor for detecting.

In the washing process, the laundry is put in the drum 4, the weight and the cloth quality of the laundry are detected by the capacity sensing and the cloth quality sensing, and the washing condition is set based on the detected data. Then, the washing liquid in which the detergent is dissolved is jetted from the jet nozzle 28, or is poured from the water supply passage 16 to be contained in the laundry, and the drum 4 is rotated at a low speed after the water is supplied to the set water level. The laundry in the drum 4 is lifted to near the top of the drum 4 by the centrifugal force generated by the rotation of the drum 4 and a baffle (not shown),
It falls by its own weight (this is called tumbling).
By repeating this tumbling, the laundry is knocked and washed by the impact force when it falls. The rinsing process is performed in the same manner.

In the dehydration process, the drum 4 is rotated at high speed,
The centrifugal force is used to press the laundry against the inner surface of the peripheral wall of the drum 4. At this time, the water is blown out from the small holes 5 of the drum 4, guided along the inner surface of the water tank 2 to the lower part thereof, and discharged to the outside of the machine through the drainage channel 23 by the drainage pump 26.

In the drying step, the drum 4 is rotated at a low speed while the air heated by the drying heater 20 and having a high temperature is blown into the drum 4 by the blower 21. The air in the water tank 2 heated by the drying heater 20 and having a high temperature is
The rotation of the drum 4 causes the temperature of the entire inside of the water tub 2 including the laundry to be increased, thereby evaporating the moisture contained in the laundry. The air in the high-temperature and high-humidity state is in direct contact with the cooling water flowing in the water supply passage 16 to condense the water until it reaches the warm air duct 19 through the water supply passage 16, and the water is discharged to the outside of the machine. Is dehumidified. The laundry is dried by repeating the cycle in which the dehumidified air is heated again by the drying heater 20.

[0011]

In the conventional drum type washer / dryer, a plurality of courses such as a standard course, a wool course and a delicate course can be selected depending on the type of laundry. However, the course for washing and drying the blanket is not set, the finish is poor when the blanket is washed in the standard course, the intermediate dehydration does not occur when washing in the wool course, and the rinse is insufficient. There was a problem such as becoming.

[0012] Further, there are few proposals for washing and drying blankets in a drum type washer-dryer, and in the present circumstances, there have been almost no studies on improvement for treating up to drying including dehydration. Japanese Laid-Open Patent Publication No. 5-200187 proposes washing, dehydration, and drying with less damage to bedding and the like, but a basket-like structure is placed inside the drum to regulate movement of the laundry. Since this method is adopted, the laundry is fixed in the drum, and washing and rinsing are insufficient. Moreover, since the basket-like structure is put in the drum, the size of the blanket or the like that can be washed and dried is significantly limited, and most of the blankets are used for household use or a small drum type washer / dryer with a washing capacity of 10 kg or less. There is a problem that it cannot be processed. In addition, Japanese Patent Publication No. 63-12639 discloses a proposal for improving the finish in a drum-type washing machine, although it does not mention washing or drying of blankets. In this proposal, the laundry is allowed to float with the cleaning liquid by reciprocating reciprocating rotation of the drum within one rotation, and no consideration is given to the washing water level, rinsing, intermediate dehydration, and the like. Further, since the drum is rotated within 360 degrees, there is a problem that the detergent is not sufficiently dissolved. It should be noted that this is almost the same as the wool course that has been conventionally adopted in the drum type washing machine.

On the other hand, a fully automatic washing machine having a blanket course has hitherto been commercialized, but it is necessary to use a blanket washing net (for example, JP-A-4-144592), and a vertical shaft. Unlike the drum type washer / dryer, it cannot be applied to the drum type washer / dryer as it is, unlike the drum type washer / dryer because the structure for vibration reduction during dewatering is different. Furthermore, the fully automatic washing machine does not have a drying function, and it requires additional work such as using a dryer, which is complicated.

As described above, none of the blankets can improve the finished state of the blanket in a series of steps from washing to drying, and the present invention provides a drum type washer / dryer capable of washing and drying the blanket in a satisfactory state. For the purpose of providing.

[0015]

As shown in FIGS. 1 and 2, a means for solving the problems according to the present invention comprises a water tank 2 installed inside an outer box 1,
An unbalance detecting means for detecting an unbalance at the time of dehydration, and a drum 4 which is provided with a drum 4 rotatably supported in the water tank 2 through a horizontal shaft 3 and having a plurality of small holes 5 in a peripheral wall thereof. It has a cloth quality detecting means for detecting, and a cloth amount detecting means for detecting the weight of the laundry, and provides a blanket course for washing, rinsing, dehydrating and drying the blanket to raise the water level above the standard water level. The rotation of the drum 4 is reduced, that is, the drum 4 is normally reversed within 2 revolutions at the time of washing and rinsing, and the pause time between the normal rotation of the drum 4 is equal to or longer than the rotation time of the drum 4.

At the time of rinsing, rinsing is performed while supplying water, only the water overflowing from the overflow port 40 is discharged to the outside of the machine, and the unbalance amount is detected at the time of intermediate dehydration after washing and rinsing. Select a small rotation direction for dehydration, and determine whether to dry continuously after dehydration or to pause and then dry depending on the quality of the blanket. When the value is less than the value, control is performed such that continuous operation is performed from washing to drying regardless of the material of the blanket.

[0017]

In the above means for solving problems, a blanket is put in the drum 4 and the weight and quality of the blanket are determined. As a result, operating conditions such as the water level and operating time for washing and rinsing in the blanket course are set. After that, the washing process is started, water is supplied to a water level higher than that of the standard course, and the drum 4 is rotated at a low speed twice in the forward rotation direction so that the drum 4 is rotated.
Wash the inner blanket by tumbling. The drum 4 is stopped for a pause time longer than this rotation time, and the drum 4 is rotated twice in the reverse direction to take a longer pause time again. A high-bulk blanket fits well into the washing liquid, and by taking a long pause between forward and reverse, the impact on the blanket is reduced and damage can be reduced.

When the washing process is completed, the water is drained, and then preliminarily dehydrated in both rotation directions at a low speed, the unbalance amount at this time is detected, and the intermediate dehydration is performed in the rotation direction with the small unbalance amount. By this intermediate dehydration, the washing liquid contained in the blanket is discharged, and the burden of rinsing in the next process is reduced,
Also, dehydration vibration is reduced.

In the rinsing process, rinsing is performed while supplying water, and the water overflowing from the overflow port 40 is discharged to the outside of the machine. By performing the water-injection rinse, the defoaming is improved and the insufficient rinse is not caused. When the rinsing is completed, drainage is performed, and then intermediate dehydration is performed in the same manner as the intermediate dehydration after the washing process, and then dehydration is performed at a high speed rotation. By doing so, the water contained in the blanket is discharged to some extent, and the blanket is stuck to the inner wall of the drum 4, so that the unevenness of the blanket is reduced, and the drum 4 is rotated at high speed for dehydration. Even if it goes, it is possible to suppress the occurrence of vibration due to imbalance.

In the drying process, if the blanket is cotton with short naps or chemical fiber with long naps and the weight is not more than a predetermined value,
Even if the machine automatically shifts to the drying operation, there is little hair fallover or change in texture during drying, and drying is possible. On the other hand, when the blanket is a long-haired chemical fiber and has a weight of a predetermined value or more, the temporary operation is stopped. Take out the blanket in this state,
After the entanglement is loosened and the shape is adjusted, it is put in the drum 4 again and a drying operation is performed. As a result, the drying of the entire blanket is promoted, and a good finished state after drying can be secured. Therefore, for all blankets, the performance in washing and drying is improved, a good finished state is obtained, and the vibration in dehydrating is also reduced.

[0021]

EXAMPLE FIG. 1 shows a drum type washer / dryer of the present embodiment. The basic structure is the same as that of the conventional drum type washer / dryer shown in FIG. Hereinafter, the mechanism and control relating to the washing and drying of the blanket of the present invention will be mainly described.

In the drum type washer / dryer of this embodiment, an overflow port 40 is provided on the rear surface of the water tank 2 and is located at a position slightly higher than the lower end of the inlet / outlet port 7.
Is connected between the on-off valve 25 of the drainage path 23 and the drainage pump 26. Further, it has a cloth amount detecting means for detecting the weight of the laundry, a cloth quality detecting means for detecting the cloth quality of the laundry, and an unbalance detecting means for detecting an imbalance at the time of dehydration. Motor 1 based on signal
1, drainage pump 26, circulation pump, drying heater 20,
The washing heater 27, the opening / closing valve 25, and the water supply valve 15 are provided with a control circuit 42 that controls driving.

The cloth amount detecting means is to judge by the time until the number of rotations of the rising of the motor 11 reaches a predetermined value when the laundry is put in the drum 4 and rotated before water supply. The larger the amount of cloth, the longer the time. This allows the amount of cloth to be determined in a short time.

The cloth quality detecting means detects a change in water level by putting laundry in the drum 4 and supplying water up to a constant water level to perform tumbling for a short time. Then, tumbling is performed again for a short time to detect a change in water level. The cloth quality is estimated from the above two changes in water level and the detected volume. For example, since water absorbs a large amount of cotton, the amount of water level change is large, and chemical fibers such as polyester and cotton / polyester blended fibers do not have a large amount of water absorption, and therefore the amount of water level change is not large. As another method, when the laundry is put in and the drum 4 is rotated and stopped, the drum 4
The inertia also causes the motor 11 to rotate and generate an electromotive force.
Utilizing the fact that this electromotive force changes depending on the weight of the laundry, first the weight of the laundry before water absorption is detected, then the weight of the absorbed water is detected, and the degree of water absorption from both is detected. Calculated,
This represents the quality of the laundry. With this method, the amount and quality of laundry can be detected at once.

The unbalance detecting means uses a vibration sensor 43 attached to the outer wall of the water tank 2 to detect the amount of unbalance during the spin-drying rotation. As the vibration sensor 43, an acceleration sensor such as an acceleration pickup or a piezoelectric sensor is used. Accelerometers are suitable from the viewpoints of cost and frequency domain, since displacement sensors and distance sensors such as equations can be used.

The control circuit 42, as shown in FIG.
A microcomputer chip 45 having U, ROM, and RAM, a power supply transformer 47 connected to an AC power supply through a power supply switch 46, a power supply circuit section of a rectifier circuit 48, a voltage regulator 49, and a drive signal to each drive device. Output driver 50, relay 51, triac 52
And a processing circuit 54 for converting detection signals from the water level sensor 18 and the door switch 53. Also,
The control circuit 42 is connected to the power switch 46, the start / pause key 55, the washing / drying course setting key 56, the time reservation key 57, etc. provided on the operation panel 10 shown in FIG. The fluorescent display tube 61 of the display unit 60 is driven and turned on according to the contents. As shown in FIG. 4, the display unit 60 displays various information such as the set course and time.

The control circuit 42 is provided with a blanket course in addition to the conventional function of executing each washing course, and has the following functions for washing and drying the blanket. That is, the capacity sensing function for detecting the weight of the blanket before the start of the washing step, the cloth quality sensing function for detecting the cloth quality of the blanket, and the water level higher than the standard water level determined from the capacity of the laundry in the washing and rinsing steps. The drum 4 is set to the water level and the drum 4 is normally reversed within two revolutions, and the pause time between the normal rotation of the drum 4 is set to the drum 4
A drum drive control function that makes the rotation time longer than the above, a function that performs rinsing while supplying water, and a drain function that closes the opening / closing valve 25 and drives the drain pump 26 to drain only the water overflowing from the overflow port 40, Water supply valve 15 at the time of this water supply
The water supply volume control function that intermittently opens and closes the water, the intermediate dewatering function that performs intermediate dewatering at a rotation speed lower than the final dewatering rotation speed after the washing and rinsing process, and the normal dewatering speed lower than the intermediate dewatering rotation speed during dewatering. Preliminary dewatering is performed for a certain period of time in each rotation direction of inversion, and each debalance amount is detected and dewatering is performed in the rotation direction with a small unbalance amount, and drying is performed after dewatering depending on the quality of the blanket. A dry operation control function that determines whether to perform continuous operation or to perform drying after a temporary stop, and continuous operation control that continuously operates from washing to drying regardless of the material of the blanket when the blanket capacity is below a specified value. Function and.

The drying operation control function is such that, when continuous operation from washing to drying is set in the blanket course, if the blanket is determined to be a chemical fiber, the door lock is performed when the intermediate dehydration after the final rinsing is completed. Is released to perform a temporary stop, and after the opening / closing of the door 8 is detected, the process proceeds to the drying process. However, even when the opening / closing of the door 8 is not detected, the drying process is automatically started after a certain period of time. Further, when it is determined that the blanket is cotton, it is controlled so that continuous operation is automatically performed without pausing from washing to drying.

In the above construction, when a course other than the blanket course is selected, the operation from the washing step to the drying step is executed as in the prior art. The operation when the blanket course is selected is the flowchart of FIGS. 6 and 7 and FIG.
The operation timing chart will be described. First,
Open the door 8 and put the blanket in the drum 4. As a folding method when the blanket is put into the drum 4, two methods shown in FIG. 5 can be considered. Fig. 5 (A) is called folding screen folding, and it is a method of folding a blanket into four in the longitudinal direction and folding it into smaller pieces. (B) is a method called roll winding and four blankets in the longitudinal direction. It is a method of folding into a roll and then rolling into a roll, and the folding method may be selected depending on the size of the blanket, the size of the opening of the door, and the like. And
When the power switch 46 is turned on, the power is turned on and the display is initialized. Therefore, when a course is selected from preset driving courses such as washing only, washing to dehydration, washing to drying, and the start key 55 is pressed, the operation is started.

The weight of the blanket is determined by rotating the drum 4 and measuring the time until the number of rotations of the rising of the motor 11 reaches a predetermined value. After this capacity sensing is completed, the water supply valve 15 is opened, and water is poured along with the detergent by an automatic detergent feeding device or the like. At this time, the on-off valve 25 is closed and the drainage pump 26 is stopped. When the water level sensor 18 detects that the water level has reached a certain level, the drum 4 is rotated to perform tumbling for a short time, and a change in the water level is detected and stored. Next, tumbling is performed again for a short time to detect and store the change in water level. The quality of the cloth is estimated from the amount of change in the water level twice and the weight of the blanket detected previously. As a result, operating conditions such as the water level for washing and rinsing and operating time are automatically set.

After that, the process proceeds to the washing step, water is supplied up to a higher water level than in the standard course, and the drum 4 is rotated twice in the forward direction at a low speed to wash the blanket in the drum 4 by tumbling. When the drum 4 is stopped and a pause time longer than this rotation time elapses, the drum 4 is rotated twice in the reversing direction to take a long pause time again. This is repeated for the set time. By setting the water level to a high level, the blanket having a high bulk is sufficiently adapted to the washing liquid, and by taking a long down time between the normal reversal, the impact on the blanket is reduced and the damage can be reduced.

When the washing process is completed, the rotation of the drum 4 is stopped, the opening / closing valve 25 is opened, the drainage pump 26 is driven, and the washing liquid is discharged to the outside of the machine. The washing liquid reaches the drainage pump 26 from the drainage hole 22 of the water tank 2 through the thread waste filter 24. At this time, the lint included in the washing liquid is the lint filter 2
4 to prevent the drainage channel 23, the drainage pump 26, etc. from being blocked by the thread waste. When drainage is completed, first 10
Preliminary dehydration is performed clockwise at a low speed of 0 rpm or less for a certain period of time, and the amount of imbalance at this time is detected and stored.
Next, preliminary dehydration is performed counterclockwise at the same number of revolutions, and the unbalance amount is detected and stored as in the case of clockwise rotation. When the pre-dehydration is over, the stored imbalance amount is compared,
Intermediate dehydration is performed at a rotation speed lower than the standard course dehydration rotation speed (generally 1000 to 2000 rpm) in the direction in which the amount of unbalance is small. The rotational speed of the intermediate dehydration is appropriately 700 rpm or less, which is the rotational speed at which the floor of the wooden house does not resonate even if imbalance occurs. By this intermediate dehydration, the washing liquid contained in the blanket is discharged, the burden of rinsing in the next process is reduced, and the rinsing performance is improved,
The rinsing process time can be shortened. In addition, blanket 4
The imbalance of the blanket is larger than that of general clothing, and it is difficult to correct it, because the dewatering vibration causes a difference in the dewatering rotation direction due to the bias of the blanket when it is thrown in and the deviation due to the tumbling. Therefore, since the rotation direction of the drum 4 is selected to be a direction having a small unbalance amount before dehydration, dehydration vibration can be reduced.

After the completion of the dehydration, water is supplied up to the set water level and the rinsing process is started. When the blanket is washed, the movement in the drum 4 is suppressed to be smaller than that in the case of washing general clothes, so that the detergent is less out of foam. Therefore, after the water supply is completed, the opening / closing valve 25 is closed, the water supply valve 15 is intermittently opened / closed to rotate the drum 4 at a low speed, and water containing no washing liquid is included in the blanket to perform tumbling while supplying water. The water overflowing from the overflow port 40 is drainage 23
And is discharged by driving the drainage pump 26. After rinsing for a predetermined time, drainage is performed, and then intermediate dehydration is performed in the same manner as the intermediate dehydration after the washing process. This water supply, rinse,
The rinsing process is completed by repeating a series of operations of drainage and intermediate dehydration 2-3 times. By performing the water-injection rinsing in this way, it is possible to improve the rinsing performance without causing shortage of bubbles and insufficient rinsing. However, if rinsing is performed while supplying water, the advantage of the drum type washer / dryer that the amount of supplied water becomes unnecessarily large and the amount of used water is small is impaired. Therefore, by intermittently opening and closing the water supply valve 15, It is possible to secure an appropriate amount of water by limiting
Moreover, it is possible to achieve high functionality at low cost without adding any special parts.

When the final intermediate dehydration is completed, the dehydration process is started, and the medium speed dehydration is performed at a rotational speed slightly higher than the rotational speed of the intermediate dehydration. At this time, the rotation direction of the drum 4 may be the same as that of the previous intermediate dehydration, or the rotation direction may be set again by detecting the unbalance amount in each rotation direction. The drum 4 rotates at a high speed, and the water contained in the blanket is blown out from the small holes 5 of the drum 4 by the centrifugal force, is guided along the inner surface of the water tank 2 to the lower portion thereof,
It is forcibly discharged to the outside of the machine by the drainage pump 26 through the drainage channel 23. Water contained in the blanket is discharged to some extent by the intermediate dehydration after rinsing, and the blanket is stuck to the inner wall of the drum 4, so that the blanket is less biased and the drum 4 is rotated at high speed. Even if it does, it is possible to suppress the occurrence of vibration due to imbalance.

After the dehydration step, if the drying step is not set, the door lock is released and the blanket is placed on the drum 4
Remove from the car and the operation ends. When the drying process is set, the result of the capacity sensing and the cloth quality sensing performed first is called, and if the blanket is cotton or chemical fiber and the weight is the predetermined value A or less, the operation automatically shifts to the drying operation. . While the air heated by the drying heater 20 and having a high temperature is blown into the drum 4 by the blower 21, the drum 4 is rotated at a low speed. Further, the water evaporated from the blanket during the drying operation flows into the water supply passage 16 together with the warm air, and the water supply valve 1
By contacting with the cooling water supplied from No. 5, water is condensed and removed. When this cooling water comes into contact with the warm air discharged from the drum 4, it captures the fine thread waste (cotton dust-like substance) contained in the warm air while draining from the drain hole 22 through the drainage channel 23. It is discharged outside the machine by the pump 26. At this time, the captured thread waste is collected by the thread waste filter 24. When the drying is completed, the door lock is released and the operation is completed.

On the other hand, when it is determined that the blanket is the chemical fiber and has the weight of the predetermined value A or more, the door lock is released and the temporary operation is stopped. In this state, the door 8 is opened, the blanket is taken out, the entanglement is loosened and the shape is adjusted, and then the drum 4 is put into the drum 4 again and the door 8 is closed. When the door switch 53 detects the closed state of the door 8, the door is locked and the drying operation is automatically performed.
By doing so, it is possible to apply warm air to the entire blanket, promote drying, and improve the finished state. Even when the door 8 is not opened or closed, the door is locked and the drying operation is automatically started after a certain period of time, and when the drying operation ends, the door lock is released again and the operation ends.

The reason for controlling the drying operation as described above is that the blanket made of chemical fiber generally has a longer foot than that of the cotton blanket, and therefore, when the hair is rinsed and rinsed, the hair is not rectified and the hair falls over when it is dried. This leads to deterioration of the finished state. Therefore, by suspending the blanket before the drying so that the condition of the blanket in the drum 4 is adjusted, a good finished state after the drying can be secured. However, even if the chemical fiber is small in shape (that is, light in weight), tumbling in the drum 4 at the time of drying is good and the finish is also good. Therefore, the ratio of the blanket weight to the drum volume is predetermined. If the value is less than the value, it is possible to improve the convenience while ensuring a good finished state by automatically shifting to the drying. In addition, since a cotton blanket generally has short naps and little deterioration in texture in terms of material, a good finished state can be ensured even when automatically shifting to drying without a temporary stop. Therefore, with respect to all blankets, performance in washing and drying is improved, a good finished state is obtained, and vibration in dehydration can be reduced.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

[0039]

As is apparent from the above description, according to claims 1 and 2 of the present invention, the water level is set higher than the standard water level,
By rotating the drum normally within 2 revolutions at the time of washing and rinsing, and washing and rinsing the blanket with the dwell time between the forward and reverse rotations of the drum being equal to or longer than the rotation time of the drum,
It is possible to set an appropriate water level and operating conditions, ensure a finished state that cannot be obtained under the same operating conditions as general laundry washing and drying, and provide a washing and drying machine with excellent usability. You can Moreover, even with a bulky blanket, it can be thoroughly applied to the washing liquid and the rinsing liquid, and the occurrence of uneven washing and uneven washing is eliminated.
The damage to the blanket can be reduced.

According to the third aspect of the present invention, rinsing is performed while supplying water, and only the water overflowing from the overflow port is discharged to the outside of the machine. Therefore, the defoaming of the detergent can be improved, and the rinsing performance can be maintained without insufficient rinsing. Can be improved.

According to the present invention, since the amount of unbalance is detected during the intermediate dehydration performed after washing and rinsing, and the rotation direction with the smaller amount of unbalance is selected for dehydration, the occurrence of vibration due to unbalance is reduced. it can. Therefore, intermediate dewatering becomes possible, the washing liquid contained in the blanket is discharged to improve the efficiency of rinsing, and the blanket is evenly attached to the drum to reduce vibration during dewatering. The burden can be eased, and the overall time can be shortened and the rinsing performance and the drying performance can be improved.

According to the fifth and sixth aspects, it is determined whether the drying is continuously performed after the dehydration or the drying is performed after a temporary stop, depending on the quality of the blanket. On the other hand, a good finish can be ensured by temporarily stopping and adjusting the condition of the blanket in the drum. In addition, for a blanket with a short foot or a blanket with a predetermined amount of cloth or less, by continuously operating from washing to drying,
A good finished state can be maintained without much trouble, and convenience can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a drum type washer / dryer showing an embodiment of the present invention.

FIG. 2 is a block diagram of a control circuit

FIG. 3 is a diagram showing an operation panel

FIG. 4 is an enlarged view of the display section of the operation panel.

FIG. 5 is an explanatory diagram of how to fold a blanket.

[Figure 6] Blanket course operation flowchart

[Fig. 7] Blanket course operation flowchart

[Fig. 8] Operation timing chart from washing process to dehydration process

FIG. 9 is a configuration diagram of a conventional drum type washer / dryer.

FIG. 10 is a perspective view of a drum type washer / dryer.

[Explanation of symbols]

 1 Outer Box 2 Water Tank 3 Horizontal Axis 4 Drum 5 Small Hole 11 Motor 15 Water Supply Valve 18 Water Level Sensor 20 Drying Heater 25 Open / Close Valve 26 Drain Pump 40 Overflow Port 43 Vibration Sensor

Claims (6)

[Claims] 1. A water tank installed in an outer box, a drum rotatably supported in the water tank via a horizontal shaft and having a plurality of small holes in its peripheral wall, a drive device for rotating the drum, and a water supply device. And a drainage device, and a drum type washer / dryer in which the process from washing to drying is performed in the drum, a blanket washing means for washing and rinsing by lowering the rotation of the drum by raising the water level above a standard water level is provided. Drum type washer / dryer characterized by 2. A drum drive control means is provided for normally reversing the drum within two revolutions at the time of washing and rinsing, and for making a pause time between the normal reversal of the drum not less than a rotation time of the drum. The drum type washer / dryer according to claim 1. 3. The water tank is provided with an overflow port, and when rinsing is performed while supplying water, a discharging means is provided for discharging only the water overflowing from the overflow port to the outside of the machine. Drum type washer / dryer. 4. An unbalance detecting means for detecting an unbalance during dehydration is provided, and the amount of unbalance is detected during intermediate dehydration performed after the completion of washing and rinsing, and the rotation direction having a small unbalance is selected to perform dehydration. The drum type washer / dryer according to claim 1, further comprising an intermediate dehydration operation means for performing the above. 5. A cloth quality detecting means for detecting the cloth quality of the laundry is provided, and whether to perform drying continuously after dehydration or to perform drying after a temporary stop depending on the detected cloth quality of the blanket. 2. The drum type washer / dryer according to claim 1, further comprising a drying operation control means for determining whether the drum type washer / dryer is used. 6. A cloth amount detecting means for detecting the weight of the laundry is provided, and when the amount of the blanket is less than a predetermined value, a continuous operation control means for continuously operating from washing to drying is provided regardless of the material of the blanket. The drum type washer / dryer according to claim 5, wherein the drum type washer / dryer is provided.