JP2000176193A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable drying in a short time which hardly causes any wrinkles by intermittently driving a pulsator at the time of drying to agitate laundry, lengthening pulsator driving time in a unit of time according to the progress of the drying, and gradually increasing the number of agitation of the laundry in a unit of time. SOLUTION: In a washing process, a clutch 15 is disengaged, and a pulsator 12 is rotated by a drive motor 14 via a decelerating mechanism 11 to wash and rinse laundry in a washing drum 7. At the time of proceeding with a hydroextracting process, a drain valve 26 is opened, and the clutch 15 is connected to rotate the washing drum 7 by the rotation of the drive motor 14. In a drying process after that, the clutch 15 is disengaged again, and a drying device 19 formed of a heater 20 and an air blower 21 is activated to blow warm air into the washing drum 7 as the pulsator 12 is intermittently rotated. At this time, with the progress of the drying operation, pulsator driving time in a unit of time is lengthened to increase the number of agitation of the laundry in a unit of time gradually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing / drying machine for rotating a pulsator and drying laundry by hot air or the like, and more particularly to a method of moving a pulsator during drying.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Laid-Open Publication No.
No. 888, the method includes a step of alternately repeating a step (A) of driving the pulsator in one direction and a step (B) of driving the pulsator in the opposite direction in drying, wherein the steps (A) and (B) are performed. Are characterized by including a step of repeating the step (a) of rotating the pulsator and the step (b) of stopping the rotation of the pulsator at least N times.

[0003]

Since the laundry immediately after the start of drying is moist, the laundry is clinged to by agitation by a pulsator, and is easily dried and wrinkled. For this reason, it is desirable to minimize the agitation of the laundry immediately after the start of drying and the like.

However, in the above-mentioned conventional control method, since the method of rotating the pulsator is the same from the start to the end of the drying, for example, by suppressing the agitation of the laundry at the start of the drying and considering wrinkles, the stirring until the end of the drying is performed. The drying time was prolonged and drying unevenness sometimes occurred. Also, in consideration of the drying time, the laundry must be stirred to some extent from the beginning, and the laundry may be wrinkled at the end of the drying.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a washing / drying machine in which the drying time is not long and wrinkles of the laundry are not easily generated at the end of the drying.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of intermittently driving a pulsator during drying to stir laundry, and increasing the pulsator driving time per unit time as drying progresses. The number of times of stirring the laundry per hour is gradually increased.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 is an outer tank, a receiving cylinder elastically suspended in the outer tank, and rotatably supported in the receiving cylinder for drying. A washing tub for accommodating the laundry, a substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, and heating the laundry in the washing tub to remove moisture. A heater that evaporates the air, a blower that blows warm air from the heater into the washing tub, and drying detection means for detecting the degree of drying of the laundry. Stir the laundry by intermittently driving, increase the pulsator driving time per unit time as drying progresses,
The number of times the laundry is agitated per unit time is gradually increased.

According to this configuration, the wet laundry immediately after the start of drying is vigorously agitated, so that it does not wrinkle by drying. Even if the driving time per unit time of the pulsator immediately after the start of drying is short, the driving time gradually increases with the progress of drying, and thus the drying time does not increase.

[0009] The invention according to claim 2 provides an outer tank,
A receiving cylinder elastically suspended and supported in the outer tub, a washing tub rotatably supported in the receiving tub and containing laundry for drying, and a rotatable inner bottom of the washing tub. A supported substantially pan-shaped pulsator, and a motor for driving the pulsator;
A heater that heats laundry in the washing tub to evaporate moisture, a blower that blows warm air from the heater into the washing tub, and a drying detection unit that detects a degree of drying of the laundry, With the washing tub fixed during drying, the pulsator is intermittently driven to stir the laundry, the drying process is divided into the first and second half, and the number of times the laundry is agitated per unit time in the first half of drying is reduced. Similarly, the number of times of stirring is increased.

According to this configuration, since the pulsator is controlled only in the first and second half in the drying process, the control of the pulsator is simplified and the cost is reduced.

[0011] The invention according to claim 3 is based on claim 1.
Alternatively, in addition to the invention described in any one of the above items 2, the stop time during the intermittent driving of the pulsator in the drying process is shortened as drying proceeds.

According to this configuration, in addition to the effect described in any one of the first and second aspects, the stop time of the pulsator is gradually shortened, so that the pulsator moves frequently, and the pulsator is moved frequently. Laundry piled up in the tub tends to collapse. This makes it easy for the laundry to be replaced in the washing tub, so that all the laundry is exposed to warm air, and the drying efficiency is improved.

The invention described in claim 4 is the first invention.
Alternatively, in addition to the invention described in any one of the above items 2, the driving time at the time of intermittent driving of the pulsator in the drying step is made longer as the drying progresses.

According to this configuration, the driving time of the pulsator gradually increases, so that the laundry can be stirred well and the drying efficiency can be improved.

[0015] Further, the invention described in claim 5 is the third invention.
Or, in addition to the invention described in any one of 4 above, a cloth amount detecting means for detecting the amount of laundry in the washing tub is provided, and the total agitation of the laundry during drying according to the amount of laundry is provided. The number of times is almost constant.

According to this configuration, the total number of times of agitation is substantially constant in accordance with the amount of the laundry, so that the laundry is easily agitated more than necessary, and the laundry is easily entangled.
Does not cause damage.

The invention described in claim 6 is the first invention.
In addition to the invention described in any one of (5) to (5), the pulsator is driven for a short time when the temperature in the washing tub rises rapidly while the pulsator is stopped during intermittent driving of the pulsator in the drying process. It is.

According to this configuration, even when the hot air outlet is blocked by the laundry when the pulsator is stopped, and the temperature of the laundry and the various parts of the washing and drying machine suddenly rises while the pulsator is stopped, the pulsator is still operated. To drive for a short time,
The laundry that has blocked the hot air outlet moves, ensuring safety.

The invention according to claim 7 is characterized in that an outer tank,
A receiving cylinder elastically suspended in the outer tub, a washing tub rotatably supported in the receiving tub and containing laundry for drying, and a rotatable inner bottom of the washing tub. A supported substantially pan-shaped pulsator, a motor for driving the pulsator, a heater for applying hot air to the laundry in the washing tub to evaporate moisture, and supplying the hot air from the heater to the washing tub. A blower that blows air into the inside, and drying detection means for detecting the degree of drying of the laundry. During drying, the pulsator is intermittently driven to stir the laundry, and as the drying proceeds, the rotation speed of the pulsator is gradually increased. It is like that.

According to this configuration, the wet laundry immediately after the start of drying is vigorously agitated, so that it does not wrinkle by being dried as it is. In addition, the rotation speed of the pulsator gradually increases with the progress of the drying, so that the pulsator moves frequently with the progress of the drying, and the laundry piled up in the washing tub at the time of driving tends to collapse. This makes it easy for the laundry to be replaced in the washing tub,
The warm air hits all the laundry, and the drying efficiency is improved. Also, the slow rotation speed of the pulsator at the beginning of the drying process does not weaken the agitation force of the laundry and increase the drying time.

The invention according to claim 8 is characterized in that the outer tank comprises:
A receiving cylinder elastically suspended in the outer tub, a washing tub rotatably supported in the receiving tub and containing laundry for drying, and a rotatable inner bottom of the washing tub. A supported substantially pan-shaped pulsator, a motor for driving the pulsator, a heater for applying hot air to the laundry in the washing tub to evaporate moisture, and supplying the hot air from the heater to the washing tub. A blower that blows air into the inside and drying detection means that detects the degree of drying of the laundry are provided.During drying, the pulsator is intermittently driven to agitate the laundry, and as the drying proceeds, the stop time during the intermittent driving is shortened. Or the driving time during intermittent driving is lengthened.

According to this configuration, the wet laundry immediately after the start of drying is vigorously agitated, so that it does not wrinkle by being dried as it is. In addition, as the drying progresses, the stop time during intermittent driving is shortened or the driving time during intermittent driving is lengthened, so that the pulsator moves more frequently as drying progresses, and the pulsator moves in the washing tub during driving. The stacked laundry is easily broken. This makes it easy for the laundry to be replaced in the washing tub, so that all the laundry is exposed to warm air, and the drying efficiency is improved. Further, the drying time does not become longer because the stop time during the intermittent driving of the pulsator is long or the driving time during the intermittent driving is short at the beginning of the drying process.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In FIGS. 1 and 2, a receiving tube 3 elastically suspended by a suspension 2 is provided in an outer tub 1, and a vibration during dehydration is absorbed by the suspension 2. I have. In the receiving cylinder 3, a washing tub 7 for both laundry and laundry (hereinafter simply referred to as the washing tub 7).
Are rotatably supported. The washing tub 7 has a pulsator 12 for stirring the laundry rotatably disposed on the inner bottom, and has a small hole 5 and a fluid balancer 6 on the inner peripheral wall. The pulsator 12 is shaped like a pan having an outer peripheral surface with an inclined surface, so that the laundry in the drying process can easily fly upward along the inclined surface by centrifugal force generated by the rotation of the pulsator 12.

Reference numeral 4 denotes a hollow dehydrating shaft, which is supported by a dehydrating bearing 8 provided at the center of the bottom of the receiving cylinder 3. The upper end of the dehydrating shaft 4 is fixed to the bottom of the washing tub 7 and rotates the washing tub 7. Reference numeral 9 denotes a washing shaft whose upper end is fixed to the pulsator 12 so that the pulsator 12 is rotated. The washing shaft 9 is disposed coaxially with the hollow portion of the dewatering shaft 4, and is disposed in the hollow portion of the dewatering shaft 4. It is supported by the provided washing bearing 10.

Reference numeral 11 denotes a speed reduction mechanism which is included in the dehydrating shaft 4 and reduces the number of rotations by a group of gears. In order to prevent abnormal rotation due to imbalance of the washing tub 7 during dehydration, preferably a plurality of gears are symmetrical. A reduction mechanism with planetary gears arranged in the form of is used. The washing shaft 9 is connected to the output side of the speed reduction mechanism 11, and the washing input shaft 13 is connected to the input side. The washing input shaft 13 is supported by an input bearing 16 provided in a lower hollow portion of the dehydrating shaft 4. Reduction mechanism 11
The dehydrating shaft 4 including the above is enclosed by a case 17, and a lower portion of the dehydrating shaft 4 is supported by a bearing 18 provided at a lower portion of the case 17. The case 17 is fixed to the bottom of the receiving cylinder 3.

A drive motor 14 rotates the spinning shaft 4 and the washing input shaft 13 and is connected to a lower portion of the washing input shaft 13.

Reference numeral 15 denotes a clutch for transmitting or not transmitting the rotation of the drive motor 14 to the dehydrating shaft 4. The clutch 15 connects the washing input shaft 13 and the spinning shaft 4 during spin-drying, and the washing input shaft 1 during washing, rinsing and drying.
The washing tub 7 is fixed by separating the dehydrating shaft 3 from the dehydrating shaft 4.

A drying device 19 is attached to a part of the outer tub 1 and dries the laundry in the washing tub 7. The drying device 19 has a heater 20 for blowing hot air on the laundry to evaporate moisture. A blower 21 for blowing warm air from the heater 20 into the washing tub 7; and a water cooler for directly cooling the warm air containing steam of the laundry discharged from the small holes 5 to the outside of the washing tub 7 by water cooling. And a heat exchanger 22 for condensing.

Reference numerals 23 and 24 denote elastic bellows A and B for connecting the upper and lower portions of the receiving cylinder 3 and the drying device 19, respectively.
A gate valve 25 is provided between the bellows B24 and the lower part of the receiving cylinder 3, and is provided so as to close the passage during washing and dehydration and open the passage during drying. Reference numeral 26 denotes a drain valve provided between the gate valve 25 and the lower part of the receiving cylinder 3, which is used for washing water and rinsing water during washing, water or the like spouted from the laundry by centrifugal force during dehydration, and drying during drying. It is set to drain water for cooling hot air and condensed water obtained by cooling hot air containing water vapor of clothes. A trap 27 is provided at the end of the drain valve 26, and is configured such that warm air containing water vapor of clothes does not leak from the drain valve 26 during drying. 28 is a solenoid for moving the clutch 15. Reference numeral 29 denotes a filter provided behind the trap 27.

Numeral 30 denotes a drying detecting means for detecting the degree of drying of the laundry.

As shown in FIG. 2, which shows the relationship between the driving time per unit time of the pulsator 12 and the passage of time, the pulsator 12 is intermittently driven at the time of drying to stir the laundry, and as the drying progresses, the pulsator 12 is driven per unit time. The driving time of the pulsator 12 is gradually increased, and the number of times the laundry is stirred per unit time is gradually increased.

In the present embodiment, the closed-cycle circulation system having a dehumidifying mechanism in the air passage is used, but there is no problem with the exhaust system.

In the present embodiment, the washing shaft 9 is
Although it is interlocked with the drive motor 14 via 1, there is no problem if it is directly connected to the drive motor 14.

In this embodiment, a small hole 5 provided in the inner peripheral wall of the washing tub 7 is provided for the passage of warm air from the washing tub 7 to the receiving cylinder 3.
However, there is no problem even if a small hole is provided in the pulsator 12 or the like as a passage for the warm air.

Next, the operation of this embodiment will be described.

In the washing process, the clutch 15 separates the washing input shaft 13 and the dehydrating shaft 4 from each other, the rotation of the drive motor 14 is not transmitted to the dehydrating shaft 4, and the washing input shaft 13, the speed reduction mechanism 11, the washing shaft 9 Only through the pulsator 12 to provide mechanical power to the laundry. Thus, the washing and rinsing of the laundry stored in the washing tub 7 proceeds.

When the washing process is completed, a dehydration process is started.
In this dehydration step, the water in the washing tub 7 is discharged from the drain valve 26, and at the same time, the solenoid 28 is energized, and the clutch 15 is operated to connect the washing input shaft 13 and the dehydration shaft 4. As a result, the rotation of the drive motor 14
The pulsator 12 and the washing tub 7 fixed to the dehydrating shaft 4 rotate through the washing shaft 9. The moisture of the laundry that has been washed by the rotation of the washing tub 7 is
By the centrifugal force, it is squeezed out into the receiving cylinder 3 from many small holes 5 provided on the inner peripheral wall of the washing tub 7. The laundry is thus dehydrated. During dehydration, the receiving cylinder 3 is naturally shaken due to the imbalance of the dewatering tank 7 and the like, but the swing is absorbed by the suspension 2 and the fluid balancer 6. Movable part receiving cylinder 3
Is connected to the drying device 19, which is a fixed portion attached to a part of the outer tub 1, by a bellows A23 and a bellows B24.
There is no hindrance to that movement.

When the dehydration step is completed, the drying step is started.
In this drying step, the washing input shaft 13 and the spin-drying shaft 4 are disconnected by the clutch 15 in the same manner as in the washing process, and the rotation of the drive motor 14 is not transmitted to the spin-drying shaft 4. Only transmitted to the pulsator 12 via the mechanism 11 and the washing shaft 9, the dehydrating shaft 4 and the dehydrating shaft 4
Are fixed to the stopped state. In this state, the drive motor 14 is energized, the pulsator 12 starts rotating (intermittent operation), and the drying device 19 is also energized, and the warm air heated by the heater 20 is blown by the blower 21.
Thus, the air is blown out from the upper part of the receiving cylinder 3 toward the laundry in the washing tub 7 through the bellows A23. The moisture gradually evaporates from the laundry stirred by the pulsator 12 due to the warm air, and the warm air containing the moisture is sent to the receiving cylinder 3 through the small hole 5 of the first rinsing tub 7 and then from the lower part of the receiving cylinder 3 After passing through the gate valve 25 and the bellows B24, it is sent to the rear heat exchanger 22. Then, it comes into direct contact with the cooling water in the heat exchanger 22 to condense the water contained in the hot air, and dehumidification proceeds.

At this time, as shown in FIG.
The intermittent drive is used to stir the laundry, and as the drying progresses, the drive time per unit time is set to 10 seconds per 10 seconds, for example, from 1 second drive for 9 seconds to 2 seconds drive for 8 seconds. The driving time per unit is gradually increased from 1 second to 2 seconds, and the number of times of washing of the laundry per unit time is gradually increased. For this reason, the wet laundry immediately after the start of the drying is vigorously agitated so that the laundry is not dried and wrinkled. Even if the driving time per unit time of the pulsator 12 immediately after the start of drying is short, the driving time gradually increases with the progress of drying, so that the drying time does not increase.

(Embodiment 2) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. FIG. 3 shows the number of times of stirring of the pulsator 12 per unit time in the first and second half of the drying process, and a cloth amount detecting means (not shown).
For example, the drying time is assumed in advance based on the amount of the laundry put into the washing tub 7, and the drying process is divided into the first and second half based on this, so that the number of times the laundry is stirred per unit time in the first half of the drying process is reduced. (For example, about 1000 times with 3 kg of laundry), and in the latter half of drying, increase the number of times of stirring (for example, laundry 3
2,000 kg).

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step have been completed, a drying step is started. In this process, the drive motor 14 is energized and the pulsator 12 starts rotating (intermittent operation) as in the first embodiment, and the drying device 19 is energized.
The warm air heated by the heater 20 is blown out toward the laundry in the washing tub 7. As shown in FIG.
The number of agitation of laundry per unit time in the first half of the drying process, that is, the total number of agitation in the first half of the drying process is reduced to about 1,000 times with 3 kg of laundry, and the same number of agitation in the latter half of the drying process, that is, the latter half of the drying process Since the total number of agitation is set to be as high as about 2000 times for 3 kg of laundry, the wet laundry in the first half of the drying process is strongly agitated, and is not dried and wrinkled. . Further, since the control of the pulsator 12 in the drying process is limited to only the first and second half of the drying process, the control of the pulsator 12 is simplified and the cost is reduced.

(Embodiment 3) The basic structure is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. FIG. 4 shows an example of the relationship between the drive, the stop time, and the elapse of time when the pulsator 12 is intermittently driven in the drying process. In addition to the invention described in claim 1, in the drying process, The stop time at the time of intermittent driving of the pulsator 12 is provided so as to be shortened as the drying progresses (for example, from 9 seconds at 1 second to 4 seconds at 1 second), the stop time from 9 seconds to the progress of drying. And is gradually shortened up to 4 seconds).

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step are completed, the drying step is started. In this process, the drive motor 14 is energized and the pulsator 12 starts rotating (intermittent operation) as in the first embodiment, and the drying device 19 is energized.
The warm air heated by the heater 20 is blown out toward the laundry in the washing tub 7. As shown in FIG.
Is provided so as to gradually shorten the stop time during intermittent driving from 9 seconds to 4 seconds as the drying progresses, in addition to the effect according to any one of claims 1 and 2, Since the stop time of the pulsator 12 is gradually shortened, the pulsator 12 moves frequently, and the laundry piled up in the washing tub 7 at the time of driving tends to collapse. For this reason, the laundry is easily replaced in the washing tub 7, and all the laundry is exposed to warm air, so that the drying efficiency is improved.

(Embodiment 4) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. FIG. 5 shows an example of the relationship between the drive, the stop time, and the elapse of time when the pulsator 12 is intermittently driven in the drying process. In addition to the invention described in claim 1 or 2, the drying process includes The driving time at the time of intermittent driving of the pulsator 12 is set to be longer as the drying progresses (for example, the driving time starts at 1 second and stops at 1 second, for example, from 5 seconds at 1 second to 5 seconds at 3 seconds). Along with 3 seconds).

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step are completed, the drying step is started. In this process, as in the first embodiment, the drive motor 14 is energized to start the rotation of the pulsator 12, and the drying device 19 is also energized so that the warm air heated by the heater 20 is applied to the laundry in the washing tub 7. It is blown out toward. As shown in FIG. 5, the pulsator 12 is provided so as to gradually increase the driving time during intermittent driving from 1 second to 3 seconds as drying proceeds. In addition to the effects described above, the driving time of the pulsator 12 is gradually increased, so that the laundry is well stirred and the drying efficiency is improved.

(Embodiment 5) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. In FIG. 6, 3
Reference numeral 1 denotes a cloth amount detecting means for detecting an amount of laundry put into the washing tub 7. And any one of claims 3 and 4
In addition to the invention described in the item, the total number of agitation of the laundry at the time of drying is made substantially constant (for example, about 3000 times for 3 kg of the laundry) in accordance with the amount of the laundry to be introduced.

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step are completed, the drying step is started. In this process, as in the first embodiment, the drive motor 14 is energized to start the rotation of the pulsator 12, and the drying device 19 is also energized so that the warm air heated by the heater 20 is applied to the laundry in the washing tub 7. It is blown out toward. The pulsator 12 is provided so that the total number of agitation of the laundry at the time of drying is set to about 3000 times for 3 kg of the laundry in accordance with the input amount of the laundry detected by the cloth amount detecting means 31. In addition to the effects described in any one of Items 3 and 4, the laundry is agitated more than necessary times, so that the laundry is easily entangled and does not cause wrinkles, uneven drying, damage, or the like.

(Embodiment 6) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. In addition to the invention according to any one of claims 1 to 5, when the temperature in the washing tub 7 sharply rises while the pulsator 12 is stopped during intermittent driving of the pulsator 12 in the drying process, the pulsator 1
2 is provided to be driven for a short time.

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step are completed, the drying step is started. In this process, as in the first embodiment, the drive motor 14 is energized to start the rotation of the pulsator 12, and the drying device 19 is also energized so that the warm air heated by the heater 20 is applied to the laundry in the washing tub 7. It is blown out toward. The pulsator 12 stops the washing tub 7 while the pulsator 12 is stopped.
It is provided so as to be driven for a short time when the temperature of the inside rapidly rises, and in addition to the effect according to any one of claims 1 to 5, a hot air outlet when the pulsator 12 is stopped. Is blocked by laundry, then pulsator 12
Even if the temperature of the laundry or each part of the washing / drying machine suddenly rises during the stoppage, the pulsator 12 is driven for a short time, so that the laundry that has blocked the hot air outlet moves and the safety is ensured.

(Embodiment 7) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. FIG. 7 illustrates an example of the relationship between the drive rotation speed and the time lapse during the intermittent drive of the pulsator 12 in the drying process. The drive rotation speed during the intermittent drive of the pulsator 12 during the drying process is increased as the drying proceeds. (E.g., from about 20 rpm to about 200 rpm).

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the dehydrating step are completed, the drying step is started. In this process, the drive motor 14 is energized and the pulsator 12 starts rotating (intermittent operation) as in the first embodiment, and the drying device 19 is energized.
The warm air heated by the heater 20 is blown out toward the laundry in the washing tub 7. As shown in FIG.
Is provided so that the driving rotation speed during intermittent driving increases from about 20 rpm to about 200 rpm as the drying process proceeds.

Therefore, the pulsator 12 moves frequently as drying proceeds, and the laundry piled up in the washing tub 7 when the pulsator 12 is driven tends to collapse. For this reason, the change of the laundry easily occurs in the washing tub 7, the warm air is applied to all the laundry, and the drying efficiency is improved.

Even if the rotation speed of the pulsator 12 in the early stage of the drying process is as low as about 20 rpm, there is no fear that the agitation force of the laundry becomes weak and the drying time becomes long. Because at the end of the drying process, about 200
This is because the rotation speed is as high as rpm and the stirring of the laundry is improved.

Further, since the rotation speed of the pulsator 12 in the initial stage of the drying process is as low as about 20 rpm, the wet laundry immediately after the start of the drying is vigorously stirred, and the cloth is dried and wrinkled. Of course, there is nothing.

(Embodiment 8) The basic configuration is the same as that of the embodiment of the present invention described in claim 1 shown in FIG. 1, and the same portions are denoted by the same reference numerals and description thereof will be omitted. Further, in the intermittent operation at the time of the drying process, the pulsator 12 is provided so as to shorten the stop time at the time of the intermittent drive or increase the drive time at the time of the intermittent drive as the drying progresses. This is the same as FIG. 4 described in Example 3 and FIG. 5 described in Example 4, and a detailed description is omitted.

Next, the operation of this embodiment will be described.

When the washing / rinsing step and the spin-drying step are completed, a drying step is started. In this process, the drive motor 14 is energized and the pulsator 12 starts rotating (intermittent operation) as in the first embodiment, and the drying device 19 is energized.
The warm air heated by the heater 20 is blown out toward the laundry in the washing tub 7. As shown in FIGS. 4 and 5, the pulsator 12 stops the intermittent drive for 9 hours as the drying proceeds.
It is provided such that the driving time during intermittent driving gradually decreases from second to 5 seconds, or gradually increases from 1 second to 3 seconds.

Accordingly, the pulsator 12 moves frequently as the drying proceeds, and the laundry piled up in the washing tub 7 when the pulsator 12 is driven tends to collapse. For this reason, the change of the laundry easily occurs in the washing tub 7, the warm air is applied to all the laundry, and the drying efficiency is improved.

Even if the intermittent drive of the pulsator 12 at the beginning of the drying process is stopped for as long as 9 seconds, there is no concern that the drying time will be long. This is because at the end of the drying process, the stop time is as short as about 5 seconds. Alternatively, even if the driving time during the intermittent driving of the pulsator 12 in the early stage of the drying process is as short as 1 second, there is no fear that the stirring power of the laundry becomes weak and the drying time becomes long. This is because, at the end of the drying process, the driving time is as long as about 3 seconds, and the laundry is well stirred.

It is a matter of course that the wet laundry immediately after the start of drying is vigorously agitated, attached, dried and left without wrinkling.

[0068]

As apparent from the above embodiment, according to the first aspect of the present invention, the outer tub, the receiving cylinder elastically suspended in the outer tub, and the A washing tub rotatably supported and containing laundry for drying, and a substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub;
A motor for driving the pulsator, a heater for heating laundry in the washing tub to evaporate moisture, a blower for blowing warm air from the heater into the washing tub, and detecting a degree of drying of the laundry. With the washing tub fixed during drying, the pulsator is intermittently driven to agitate the laundry, and the pulsator driving time per unit time is increased as drying progresses, and washing per unit time is performed. Since the number of times of agitation of the articles is gradually increased, the wet laundry immediately after the start of drying is vigorously agitated so that the laundry is not dried and wrinkled. Further, even if the driving time per unit time of the pulsator 12 immediately after the start of drying is short, the driving time gradually increases with the progress of drying, so that the drying time does not become long.

According to the second aspect of the present invention, the outer tub, the receiving cylinder elastically suspended in the outer tub, and the rotatable support in the receiving tub for drying. A washing tub accommodating the laundry, a substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, and heating the laundry in the washing tub to remove moisture. A heater for evaporating, a blower for blowing warm air from the heater into the washing tub, and drying detection means for detecting the degree of drying of the laundry, wherein the pulsator is intermittently fixed with the washing tub fixed during drying. The laundry was stirred by driving it, and the drying process was divided into the first and second half, and the number of agitation of the laundry per unit time in the first half of drying was reduced, and the number of agitation in the second half of drying was increased. The pulsator is controlled only in the first and second half of the process. Control of the pulsator becomes simple, also leads to cost down.

According to the third aspect of the present invention, in addition to the first aspect of the present invention, the stop time during the intermittent driving of the pulsator in the drying process is shortened as the drying proceeds. As a result, in addition to the effect described in any one of claims 1 and 2, the stop time of the pulsator is gradually shortened, the pulsator is moved frequently, and the pulsator is stacked in the washing tub during driving. Laundry is likely to collapse. This makes it easier for the laundry to be replaced in the washing tub, so that all laundry is exposed to warm air,
Drying efficiency is improved.

According to the fourth aspect of the present invention, in addition to the first aspect of the present invention, the driving time of the intermittent driving of the pulsator in the drying process is increased as the drying proceeds. As a result, in addition to the effects described in any one of claims 1 and 2, the driving time of the pulsator gradually increases, and the agitation of the laundry improves.
Drying efficiency is improved.

According to the fifth aspect of the present invention, in addition to the third or fourth aspect of the present invention, there is provided a cloth amount detecting means for detecting an amount of laundry put in the washing tub. ,
The total number of agitation of the laundry during drying is almost constant according to the amount of the laundry, and the total number of agitation is substantially constant according to the amount of the laundry. This makes the laundry easier to entangle and does not cause wrinkles, uneven drying, or damage.

According to the invention described in claim 6, in addition to the invention described in any one of claims 1 to 5, during the intermittent driving of the pulsator in the drying step, the pulsator is stopped.
When the temperature in the washing tub rises rapidly, the pulsator is driven for a short time.When the pulsator stops, the hot air outlet is blocked by the laundry. Even if the temperature of each part of the washer / dryer rises rapidly, the pulsator is driven for a short time, so the laundry that has blocked the hot air outlet moves.
Safety is ensured.

According to the seventh aspect of the present invention, the wet laundry immediately after the start of drying is vigorously agitated to attach the laundry.
It does not dry and wrinkle. In addition, the rotation speed of the pulsator gradually increases with the progress of the drying, so that the pulsator moves frequently with the progress of the drying, and the laundry piled up in the washing tub at the time of driving tends to collapse. This makes it easy for the laundry to be replaced in the washing tub, so that all the laundry is exposed to warm air, and the drying efficiency is improved. Also, the slow rotation speed of the pulsator at the beginning of the drying process does not weaken the agitation force of the laundry and increase the drying time.

According to the eighth aspect of the present invention, the wet laundry immediately after the start of drying is vigorously agitated to attach the laundry.
It does not dry and wrinkle. In addition, as the drying progresses, the stop time during intermittent driving is shortened or the driving time during intermittent driving is lengthened, so that the pulsator moves more frequently as drying progresses, and the pulsator moves in the washing tub during driving. The stacked laundry is easily broken. This makes it easy for the laundry to be replaced in the washing tub, so that all the laundry is exposed to warm air, and the drying efficiency is improved. Further, the drying time does not become longer because the stop time during the intermittent driving of the pulsator is long or the driving time during the intermittent driving is short at the beginning of the drying process.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the overall configuration of a washing and drying machine according to a first embodiment of the present invention.

FIG. 2 is a time chart showing the pulsator driving time and the lapse of time.

FIG. 3 is a time chart of the number of agitation per unit time in the first and second half of the pulsator according to the second embodiment of the present invention.

FIG. 4 is a time chart showing a drive time and a stop time of a pulsator according to a third embodiment of the present invention.

FIG. 5 is a time chart showing a driving time and a stopping time of a pulsator according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing the overall configuration of a washing / drying machine according to a fifth embodiment of the present invention.

FIG. 7 is a time chart showing a pulsator rotation speed and a lapse of drying time according to a seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer tub 3 Receiving cylinder 7 Washing tub 12 Pulsator 14 Drive motor 19 Drying device 20 Heater 21 Blower 30 Drying detecting means 31 Cloth amount detecting means

Claims (8)

[Claims] An outer tub, a receiving cylinder elastically suspended in the outer tub, a washing tub rotatably supported in the receiving tub, and containing laundry for drying; A substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, a heater for heating the laundry in the washing tub to evaporate moisture, and a temperature from the heater. A blower that blows air into the washing tub, and a drying detection unit that detects the degree of drying of the laundry are provided.In a state where the washing tub is fixed at the time of drying, the pulsator is intermittently driven to stir the laundry, and drying is performed. A washing and drying machine that increases the pulsator driving time per unit time as the process progresses, and gradually increases the number of times of stirring the laundry per unit time. 2. An outer tub, a receiving cylinder elastically suspended in the outer tub, a washing tub rotatably supported in the receiving tub, and containing laundry for drying. A substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, a heater for heating the laundry in the washing tub to evaporate moisture, and a temperature from the heater. A blower that blows air into the washing tub, and a drying detection unit that detects the degree of drying of the laundry are provided.In a state where the washing tub is fixed at the time of drying, the pulsator is intermittently driven to stir the laundry, and drying is performed. A washing / drying machine that divides the process into the first and second half and reduces the number of agitation of laundry per unit time in the first half of drying, and increases the number of agitation in the second half of drying. 3. The washing / drying machine according to claim 1, wherein the stop time during the intermittent driving of the pulsator in the drying process is shortened as drying proceeds. 4. The washing and drying machine according to claim 1, wherein the driving time during the intermittent driving of the pulsator in the drying step is increased as the drying progresses. 5. A laundry amount detecting means for detecting an amount of laundry loaded in a washing tub, wherein a total number of agitation of the laundry during drying is made substantially constant according to the loaded amount of laundry. Or the washing / drying machine according to 4. 6. The washing apparatus according to claim 1, wherein the pulsator is driven for a short time when the temperature in the washing tub rises rapidly while the pulsator is stopped during the intermittent driving of the pulsator in the drying process. Dryer. 7. An outer tub, a receiving cylinder elastically suspended and supported in the outer tub, a washing tub rotatably supported in the receiving tub, and for storing laundry for drying, A substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, a heater for applying hot air to the laundry in the washing tub to evaporate moisture, and A blower that blows warm air from a heater into the washing tub, and a drying detection unit that detects a degree of drying of the laundry, and at the time of drying, intermittently drives the pulsator to stir the laundry,
A washer / dryer that gradually increases the rotation speed of the pulsator as drying proceeds. 8. An outer tub, a receiving cylinder elastically suspended in the outer tub, a washing tub rotatably supported in the receiving tub, and for storing laundry for drying, A substantially pan-shaped pulsator rotatably supported at the inner bottom of the washing tub, a motor for driving the pulsator, a heater for applying hot air to the laundry in the washing tub to evaporate moisture, and A blower that blows warm air from a heater into the washing tub, and a drying detection unit that detects a degree of drying of the laundry, and at the time of drying, intermittently drives the pulsator to stir the laundry,
With the progress of drying, shorten the stop time during intermittent drive,
Or a washer / dryer that extends the drive time during intermittent drive.