JP2002159775A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently replace laundry up and down and to the left and right even in the case where the amount of the laundry is large and to efficiently dry it without drying irregularities in a washing and drying machine provided with a process of blowing hot air into an inner tub provided with a rotation center axis in the vertical direction and drying clothes. SOLUTION: The inner tub 4 provided with the rotation center axis in the vertical direction is freely rotatably supported inside an outer tub 3 elastically hung inside a case body 1, a rotary blade 5 is freely rotatably provided on the inner bottom part of the inner tub 4 and the inner tub 4 or the rotary blade 5 is driven by a motor 9. Circulation air heated by a heater 13 is blown into the inner tub 4 by a blower 12 for drying, cooling air is introduced into the case body 1 by the blower 17 for cooling and a drying process is controlled by a control means. The control means is provided with two or more of the processes of the different time ratios of a tub rotation mode for drying while rotating the inner tub 4 and a rotary blade rotation mode for drying while rotating the rotary blade 5 and the process for which the time ratio of the rotary blade rotation mode is high is performed as the drying advances.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing / drying process which has a process of drying clothes by blowing warm air into an inner tub having a rotation center axis in a vertical direction, and capable of performing washing to drying consistently. It is about the machine.

[0002]

2. Description of the Related Art Conventionally, this type of washing / drying machine has a rotating center axis set vertically in an outer tub elastically suspended in a housing as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-276661. The inner tub is rotatably supported, and the rotating wings are rotatably provided on the inner bottom of the inner tub. In the washing and rinsing steps, the rotating wings are rotated to wash laundry (clothes) in the inner tub. ,
In addition to rinsing, in the dehydration step, the inner tub is rotated at a high speed to perform dehydration, and in the drying step subsequent to the dehydration step, air heated by the heating device is blown into the inner tub by a blower to be dried.

The operation of the above construction will be briefly described. After the spin-drying process, the rotating blades are rotated at a rotational speed of 130 r / m.
In the cycle of 1 second on and 0.5 second off, the clockwise and counterclockwise rotations were alternately repeated to carry out a scraping process of 2 to 3 reciprocations, and adhered to the inner wall surface of the inner tank by centrifugal force during dehydration. Scrub the laundry.

[0004] Next, after the scraping process, a drying process is started. First, the rotating blades are turned on at a rotation speed of 130 r / min for 0.5 seconds and then turned clockwise and counterclockwise alternately with a 0.5 second off cycle. After performing the loosening process of repeatedly reciprocating 5 to 10 times, the laundry dispersed on the rotor is randomly replaced and loosened, and then the hot air heated by the heating device is supplied into the inner tub for several minutes. Dry the laundry. And
The degree of drying is determined, and if it is dry, the drying is completed and the operation is shifted to air blowing. If it is not dried, the above-described loosening process and drying operation are repeated again.

[0005]

In such a conventional washing / drying machine, a loosening operation for 10 to 20 seconds and a stop operation for several minutes from the beginning of drying are merely repeated until the end of drying, and the ratio of the loosening process is low. Until now, drying proceeds, so if the amount of laundry is large, sufficient replacement operation will not be performed, the drying speed of the upper laundry that is easily exposed to warm air will be faster, and the drying speed of the lower laundry will be slower As a result, there is a problem that drying unevenness easily occurs.

An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to sufficiently replace laundry vertically and horizontally even when there is a large amount of laundry so that drying can be performed efficiently without drying unevenness.

[0007]

According to the present invention, in order to achieve the above object, an inner tank having a rotation center axis in a vertical direction is rotatably supported in an outer tank elastically suspended in a housing. A rotatable blade is rotatably provided on the inner bottom of the inner tank, the inner tank or the rotatable blade is driven by a driving means, a circulating air is blown into the inner tank by a blowing means, and an air blown by the blowing means is heated by the blowing means. Heating, cooling air is introduced from the outside into the housing by the cooling air blowing means, the driving means by the control means,
The drying process is controlled by controlling the operation of the blowing means, heating means, cooling blowing means, etc., and the control means comprises a tank rotation mode for drying while rotating the inner tank and a rotation for drying while rotating the rotating blades. It has two or more strokes with different time ratios in the blade rotation mode, and performs a stroke with a high time ratio in the rotor rotation mode as drying proceeds.

Thus, even when there is a large amount of laundry, the laundry can be sufficiently exchanged up, down, left, and right to dry efficiently without drying unevenness.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to an outer tub elastically suspended in a housing, and having a rotation center axis in a vertical direction and rotatably supported in the outer tub. Inner tank,
A rotating blade rotatably provided on the inner bottom of the inner tank, a driving unit for driving the inner tank or the rotating blade, a blowing unit for blowing circulating air into the inner tank, and a blower by the blowing unit. A drying unit is controlled by controlling operations of a heating unit for heating air, a cooling and blowing unit for introducing cooling air from the outside into the housing, and operations of the driving unit, the blowing unit, the heating unit and the cooling and blowing unit. Control means, the control means comprising:
It has two or more processes having different time ratios between a tank rotation mode for drying while rotating the inner tank and a rotor rotation mode for drying while rotating the rotor, and the time of the rotor rotation mode as drying proceeds. In the first half of drying, the drying rate of the laundry is low, so that the rotation of the tub is mainly performed to reduce the occurrence of wrinkles caused by cloth entanglement, In the latter half of the drying, the rotation is mainly performed by the rotor blade rotation, so that even when there is a lot of laundry, the laundry can be switched up, down, left and right, and the warm air can be evenly applied to the laundry, so there is no drying unevenness and drying is efficient can do.

According to a second aspect of the present invention, in the first aspect of the present invention, the control means sets the time ratio of the tank rotation mode in the first stroke to 90% or more, and controls only the tank rotation. Since the laundry cannot be replaced by drying, warm air concentrates on the upper laundry and wrinkles due to thermal stress are apt to occur. By performing drying mainly in the tank rotation mode, generation of wrinkles can be suppressed, and drying can be performed efficiently without drying unevenness.

According to a third aspect of the present invention, in the second aspect of the present invention, the control means performs the rotation of the rotor in the rotor rotation mode in the first stroke, and performs the weak rotation after the strong rotation. By changing the laundry vertically and horizontally by the strong rotation of the rotary wings, hot air does not concentrate on some of the laundry, and the generation of wrinkles due to thermal stress can be suppressed. Then, by rotating the rotor blades weakly thereafter, even if the laundry becomes unbalanced in the inner tub due to strong rotation, it can be made uniform, so that the outer tub will be It is possible to prevent the occurrence of abnormal noise caused by a large whirling and hitting the housing.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the control means performs the last stroke only in the rotary blade rotation mode. Is in a high state, so there is no progress of wrinkles due to the laundry getting stuck even in the rotating blade rotation mode only, and even if there is a lot of laundry, the laundry can be switched up, down, left and right, and the warm air is evenly distributed over the laundry. Since it is applied, drying can be performed efficiently without drying unevenness, and the drying time does not become excessively long.

According to a fifth aspect of the present invention, in the first aspect of the present invention, there is provided a laundry amount detecting means for detecting an amount of the laundry in the inner tub, and the control means includes a laundry amount detecting means. The time of each process is changed based on the detected laundry amount detection result. This is because, if the time for each step is set according to the rated capacity, if the laundry is small, the drying time will be too long and the laundry will be over-dried. If you set the time, there is a problem that if there is a lot of laundry, it will end up being undried. To solve this problem, there is a method to lengthen the last stroke, but if you do so, the drying rate There is a problem that the drying time mainly in the rotary blade rotation mode becomes excessively long in a low state, and the occurrence of wrinkles in the laundry cannot be suppressed excessively. Therefore, by changing the time of each step according to the amount of the laundry, the drying can be completed in a drying time suitable for the amount of the laundry, and the drying can be performed without drying unevenness and suppressing generation of wrinkles. Can be realized.

According to a sixth aspect of the present invention, in the first or fourth aspect of the present invention, there is provided a laundry amount detecting means for detecting an amount of the laundry in the inner tub, and the control means comprises the laundry amount detecting means. Based on the laundry amount detection result detected by the means,
This is to change the rotation time of the rotor in the last stroke. In the last step, the rotation of the rotor is the main or the rotation of the rotor only, so if a fixed rotation time is applied regardless of the amount of laundry, the laundry can be moved up, down, left and right when the amount of laundry is large Can not be replaced, and uneven drying may occur. In addition, when the amount of laundry is small, the rotation time limit is too strong, and the laundry is damaged or the entanglement becomes severe. Therefore, by changing the rotation time of the rotor in the last stroke in accordance with the amount of the laundry, it is possible to realize drying without unevenness of drying and without damage or entanglement of the laundry.

According to a seventh aspect of the present invention, in the first or the fourth aspect of the present invention, there is provided a temperature detecting means for detecting the temperature of the circulating air in the circulation path, and the control means comprises:
In the last step, the end of drying is detected based on at least data from the temperature detecting means. If the last step is finished drying in a certain time, there is a problem that the laundry is not dried or over-dried depending on the amount of laundry and the ambient temperature. The reason for this is briefly explained. In this type of washing and drying machine, when the ambient temperature is high, the heating value of the heating means itself is reduced, or the heating means is limited to limit the temperature of the machine body to a certain temperature or lower. This is because the drying time becomes longer due to on / off control. Therefore, by detecting the end of drying in the last step, it is possible to end the drying in a drying time according to the amount of laundry and the ambient temperature, and it is not possible to end the drying in an undried or over-dried state.

[0016]

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

(Embodiment 1) As shown in FIG.
Is configured such that the outer tub 3 is elastically supported by a plurality of suspensions 2 therein, and vibrations during operation are absorbed by the suspensions 2. Inside the outer tub 3, the inner tub 4 having a rotation center axis in the vertical direction and accommodating laundry and a drying object (hereinafter referred to as “clothing”) is rotatably supported. The rotating blades 5 that stir are rotatably provided. The rotary blade 5 is formed in a pot shape with an outer peripheral surface having an inclined surface shape.

A number of small holes (not shown) are provided on the inner peripheral wall of the inner tank 4, and a fluid balancer 6 is provided above the small holes. And near the bottom center of the outer tank 3 and the inner tank 4,
A washing / dehydrating shaft 7 having a hollow biaxial structure and a clutch 8 for switching transmission of rotational force to the washing / dehydrating shaft 7 during washing or spinning are provided. Motor (drive means) 9
Is provided in the outer tub 3 to drive the inner tub 4 or the rotary blade 5 via the clutch 8.

A passage is formed from a lower portion of the outer tank 3 to a circulation duct 11 through a telescopic lower bellows-shaped hose 10.
The outlet of the circulation duct 11 is a drying blower (blower means) 12
Connected to the entrance. The outlet of the drying blower 12 is connected to a passage 11a, a heater 13 serving as a heating means is provided in the passage 11a, and an extendable upper bellows hose 14 is connected to the passage 11a. The upper bellows-shaped hose 14 is open toward the inner tank 4, and the inner tank 4 communicates with the outer tank 3 through a small hole in the inner peripheral wall, so that these passages constitute a circulation path.

An openable and closable inner lid 15 is provided in the upper part of the inner tank 4, and a hot air blowout hole 16 connected to an extendable upper bellows-shaped hose 14 is opened near the inner lid 15. The cooling blower (cooling blower) 17 is attached to a side surface of the housing 1 so that outside air can be introduced into the housing 1. The drain valve 18 drains water in the outer tub 3, and the switching valve 19 switches a circulation path.

The water supply valve 20 is for supplying water into the inner tank 4, and the water level detecting means 21 is for detecting the water level in the outer tank 3.

The control device 22 controls a washing process including washing, rinsing, and dehydrating processes and a drying process following the washing process based on the settings set by the operation display unit 23. It is configured as shown in FIG.

The control means 24 is constituted by a microcomputer or the like, receives the output of the water level detecting means 21 and displays the setting contents on the display means 26 based on the setting contents set by the input setting means 25. The operation of the clutch 8, the drying blower 12, the heater 13, the cooling blower 17, the drain valve 18, the switching valve 19, the water supply valve 20 and the like is controlled via a load driving means 27 composed of a bidirectional thyristor, a relay and the like. To control the washing and drying process. 2
8 is a commercial power supply.

The rotation control means 29 is a part of the control means 24 and is constituted by a microcomputer or the like. The rotation control means 29 controls the inverter circuit 32 via the drive circuit 31 based on information from the position detection means 30 to thereby control the motor 9. Is controlled to rotate.

The motor 9 is a DC brushless motor, which is not shown, and comprises a stator having three-phase windings and a rotor having two-pole permanent magnets disposed on a ring. The first winding 9a, the second winding 9b, and the third winding 9c, which constitute the winding, are wound around a slotted iron core.

The inverter circuit 32 is constituted by a switching element comprising a parallel circuit of a power transistor (IGBT) and a reverse conducting diode. A series circuit of a first switching element 32a and a second switching element 32b, a series circuit of a third switching element 32c and a fourth switching element 32d, and a fifth switching element 3
It comprises a series circuit of 2e and a sixth switching element 32f, and the series circuit of each switching element is connected in parallel.

Here, both ends of the series circuit of the switching elements are input terminals, to which a DC power supply is connected, and output terminals are respectively connected to connection points of two switching elements constituting the series circuit of the switching elements. The output terminal is 3
The U terminal, the V terminal, and the W terminal are connected to a positive voltage and a zero voltage, respectively, by connecting to the U terminal, the V terminal, and the W terminal of the phase winding and turning on and off the two switching elements forming a series circuit of the switching elements. The three states of voltage and release are set.

The switching elements are turned on and off by three position detecting means 30a, 30b and 30 each composed of a Hall IC.
It is controlled by the rotation control means 29 based on the information from c. The position detecting means 30a, 30b, 30c are arranged on the stator at intervals of 120 electrical degrees so as to face the permanent magnets of the rotor.

As shown in FIG. 3, during one rotation of the rotor, the three position detecting means 30a, 30b, 30c output pulses at the timings shown in FIG. The rotation control means 29 detects the timing of the arrow shown in the figure (when the state of any of the three position detection means changes), and detects the position detection means 30a, 30b, 3
By changing the ON / OFF state of the switching elements 32a to 32f based on the signal of 0c, the U terminal, the V terminal,
The W terminal is set to three states of positive voltage, zero voltage, and release, and the first winding 9a, the second winding 9b, and the third winding 9c of the stator are energized to generate a magnetic field and rotate the rotor. It is.

The switching elements 32a, 32c,
32e is controlled by pulse width modulation (PWM), for example, by controlling the energizing ratio of high and low at a repetition frequency of 10 kHz, thereby controlling the number of rotations of the rotor. Position detecting means 30
Each time the state of any of the signals a, 30b, and 30c changes, the cycle is detected, and the number of rotations of the rotor is calculated from the cycle, and the switching element 3 is set to the set number of revolutions.
PWM control of 2a, 32c, 32e.

The resistor 33 detects the current, and the resistor 3
3, the input current value of the inverter 32 is detected. The commercial power supply 28 is connected to the inverter 32 via a DC power converter including a diode bridge 34, a choke coil 35, and a smoothing capacitor 36. However, this is an example, and the configuration of the DC brushless motor 9, the configuration of the inverter 32, and the like are not limited thereto.

As shown in FIG. 4, the operation display unit 23 includes a water level setting switch 25a, a washing time setting switch 25b,
Input setting means 25 such as a rinse number setting switch 25c, a dehydration time setting switch 25d, a drying time setting switch 25e, a start / pause switch 25f, a course setting switch 25g, a power on / off switch 25h, a water level display section 26a, Time display section 26b, rinse number display section 26c, dehydration time display section 26d, drying time display section 26
e, display means 26 such as a remaining time display section 26f and a course display section 26g.

The operation of the above configuration will be described. First,
The washing process will be described with reference to FIG. When the clothes 37, detergent, etc. are put into the inner tank 4 and the operation is started,
The water supply valve 20 is driven by the control device 22, water is supplied until the water level detected by the water level detection means 21 reaches a predetermined water level, and the motor 9 is driven to rotate the inner tank 4. At this time, the drain valve 18 and the switching valve 19 are closed.

Accordingly, the outer peripheral portion of the water in the inner tank 4 rises due to the centrifugal force. Along with this, the water between the inner tank 4 and the outer tank 3 rises along the inner wall of the outer tank 3, and then the inner tank 4
Is sprayed into the inner tank 4 from the upper part and circulates.
As a result, the water containing the detergent passes through the clothes 37 in the inner tank 4 and is washed.

Thereafter, the drain valve 18 is opened to drain water, water is supplied again, and the clothes are rinsed in the same manner as in the washing step. In the dehydration step, the inner tub 4 containing the clothes 37 is rotated at a high speed. Due to the centrifugal force generated, the clothes 37
Is pressed against the inner wall of the inner tank 4, and the moisture is separated from the clothes 37 by this centrifugal force and dehydrated.

In the drying step, with the switching valve 19 opened, the hot air that has dried into the inner tank 4 through the upper bellows-shaped hose 14 and the hot air outlet 16 due to the blowing of the drying blower 12 and the heat generated by the heater 13. Sent in.

At this time, the garment 37 is rotating together with the inner tub 4 due to the rotation of the inner tub 4, or is flipped up or down due to the left and right rotation of the rotary wing 5, and then falls. The warm air sent into the outer tub 4 draws moisture from the garment when passing through the gaps of the movement of the garment, and exits from the inner tub 4 to the inside of the outer tub 3 in a wet state. And passes through the switching valve 19 to reach the circulation duct 11. This flow is indicated by arrows in FIG.

When warm air containing moisture passes through the inner wall of the outer tub 3 and the inside of the circulation duct 11, the outer wall of the outer tub 3 and the circulation duct 11 are cooled by the inflow of external air by the cooling blower 17. As a result, the moisture of the humid air is condensed on the inner wall, and the humid warm air is dehumidified, and the
Return to. The moisture condensed on the inner wall of the outer tank 3 is transferred to the switching valve 19.
And is appropriately discharged from the drain port 38 together with moisture condensed on the inner wall of the circulation duct 11. Then, after the drying process is completed, a blowing process for driving the drying blower 12 and the cooling blower 17 is performed, and then the process ends.

Next, a control method of the motor 9 by the control means 24 and the rotation control means 29 in the drying process is shown in FIG.
This will be described with reference to FIG.

FIG. 5 is a flow chart showing the flow of each step in the drying step of the present invention. When the washing step is completed and the drying step is started, first, in step 100, the clothes are put in the inner tub by the last dehydration of the washing step. Since it is stuck in 4, it is peeled off, and the cloth is peeled off so that it can be loosened sufficiently so that the contact area of the clothes with the air is increased.

More specifically, the rotary wing 5 is rotated right and left five times in a period of one second on and two seconds off. By doing so, the clothing stuck in the inner tub 4 at the time of dehydration is peeled off from the inner tub 4, and the cloth of the garment increases, the contact area with the air increases, and the subsequent drying proceeds quickly. To be. At this time, since the drying process is performed, dry hot air is sent into the inner tank 4 through the upper bellows-shaped hose 14 and the hot air outlet 16 due to the blowing of the drying blower 12 and the heat generated by the heater 13. 17 is also driven.

Next, steps 101 to 10
Up to 3, the first drying step to the third drying step having different time ratios between the tank rotation mode for drying while rotating the inner tank 4 and the rotary blade rotation mode for drying while rotating the rotary blade 5 are performed. Table 1 shows the operation time, tank rotation time, and rotary blade rotation time of each process.

[0043]

[Table 1]

The time of each step is determined so that the clothes are optimally dried when the garment has the rated capacity.
At 6 minutes, the time of the rotor rotation is 60 seconds with respect to the time of the tank rotation of 15 minutes, so that the time ratio of the rotor rotation is about 6%. The second drying step is 50 minutes, and the rotating blade rotation time is 60 seconds with respect to the tank rotating time of 4 minutes. Therefore, the rotating blade rotation time ratio is 20%, and the third drying step is 100%.
In minutes, the time ratio of the rotor rotation is 100%, so that the time ratio of the rotor rotation increases with the progress of the stroke.

According to the experiments conducted by the inventors, in the case of this type of washing and drying machine, drying while rotating the rotor 5 is more effective.
It has been found that the drying time can be reduced as compared with the drying while rotating the inner tank 4 or in a stationary state. For this reason, it is conceivable to use a method in which drying is mainly performed by the rotation of the rotor blades from the beginning of drying.
It causes wrinkles.

On the other hand, when the drying rate of the clothes exceeds 90%,
It was found that the entanglement and wrinkles of the clothing did not easily progress even when the rotor was mainly rotated. Therefore, by setting the three drying steps as described above, it is possible to reduce the occurrence of wrinkles caused by cloth entanglement, and to switch clothes up, down, left and right, and to apply warm air evenly to clothes. It is possible to dry efficiently without drying unevenness.

The time ratio of the tank rotation in the first drying step is about 94%. According to the experiments performed by the inventors, the first drying process mainly involves rotation of the tub, but during the rotation of the tub, the clothing is simply rotating integrally with the inner tub 4. The warm air concentrates on the upper garment near the garment, causing the temperature of the garment to rise and causing wrinkles and damage.

Therefore, in this embodiment, the periodic (16 minutes)
In order to change clothes up, down, left, and right every time, the time of the rotation of the rotor is set to one second on and two seconds off. However, it was found that when the rotation time of the rotor 5 was changed to 10% or more in the first drying step, for example, for changing the clothes up, down, left, and right, wrinkles due to the clothes becoming entangled became severe.

Therefore, the rotation time ratio of the rotary wing 5 including the strong rotation in which the clothes can be switched up, down, left and right is set to 10
%, That is, when the tank rotation time ratio is 90% or more, wrinkles are suppressed, and drying can be performed efficiently without drying unevenness.

In both the first drying step and the second drying step, the rotation time of the rotary blade 5 is 60 seconds, and a strong rotation of 1 second on and 2 seconds off, one reciprocation, 0.3 second on, and 2. Nine reciprocations are performed with a weak rotation that is off for 7 seconds. This is because, as described above, even if the tub is mainly rotated, it is necessary to perform a strong rotation in order to periodically change the clothing up, down, left, and right, which may cause the clothing in the inner tub 4 to be unbalanced. If the inner tub 4 is rotated in this state, the fluctuation becomes large, and the outer tub 3 hits the housing 1 or the like, and an abnormal sound is generated.

Therefore, even if the clothes become unbalanced due to the strong rotation, the clothes in the inner tub 4 become uniform by performing the weak rotation thereafter, and the whirling of the outer tub 3 becomes large during the subsequent rotation of the tub. As a result, it is possible to prevent the occurrence of abnormal noise caused by hitting the housing 1 or the like.

Then, after performing a blowing step for driving the drying blower 12 and the cooling blower 17 in step 104, the drying is terminated in step 105.

As described above, according to this embodiment, by increasing the time ratio of the rotation of the rotating blades in the three drying steps as the drying progresses, the occurrence of wrinkles due to cloth tangling is suppressed as much as possible. Clothes can be exchanged on the left and right, and warm air can be evenly applied to the clothes, so that drying can be performed efficiently without drying unevenness.

By setting the time ratio of the rotation of the tank in the first drying step to 90% or more, the generation of wrinkles can be suppressed, and drying can be performed efficiently without drying unevenness.

In each of the first drying step and the second drying step, the rotation of the rotary blade 5 is turned on for 1 second, turned off for 2 seconds, and then turned on for 0.3 seconds. By making nine rounds of weak rotation with the second off, the clothing can be switched up, down, left and right, and wrinkles and damage due to the concentration of warm air and excessively high clothing temperature can be prevented. Further, even if the clothes become unbalanced due to the strong rotation, the clothes are made uniform by performing the weak rotation thereafter, and the whirling of the outer tub 3 becomes large during the subsequent rotation of the tub, so that the housing 1 and the like become large. The occurrence of an abnormal sound due to hitting can be prevented beforehand.

In the present embodiment, the drying operation is controlled in three drying steps having different time ratios between the tank rotation mode and the rotary blade rotation mode. However, this is not limited to the three steps.
If the control is finely divided into more steps, there is a further effect.

The time of each stroke, the time of tank rotation in each stroke, the time of rotor rotation, the number of rotations of tank rotation, and the time limit of rotor rotation are examples of the present invention. However, the present invention is not limited to this.

As a method of realizing the strong rotation and the weak rotation of the rotor, the on-time of the motor 9 is changed. However, the same effect can be obtained by changing the rotation speed of the motor 9.

Although a DC brushless motor is used as the driving means and the inverter is controlled, this may be an induction motor.

(Embodiment 2) As shown in FIG. 6, the laundry amount detecting means 39 detects the amount of laundry in the inner tub 4 and is constituted by a microcomputer as a part of the control means 24. ing. In the drying process, the control unit 24 performs the third drying process from the first drying process based on the laundry amount detection result detected by the laundry amount detecting unit 39 as shown in (Table 2).
The time of the drying process is changed. The other configuration is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.

[0061]

[Table 2]

The operation of the above configuration will be described. Inner tank 4
When the washing and drying operation is started in a state where clothes are put in the inside, the control means 24 turns on the rotor 5 for, for example, one second.
Two rounds of clockwise and counterclockwise rotations are performed in a time-off period. At this time,
The laundry amount detecting means 39 receives the signal from the position detecting means 30a, detects the amount of inertial rotation of the rotor when the motor 9 is turned off, and detects the amount of clothes put into the inner tub 4. Detect. The control means 24 changes the water level, the washing time, the dehydration time and the like in the washing process based on the amount of clothes detected by the laundry amount detecting means 39.

Next, in the drying process, based on the amount of clothes detected in the washing process, the first
The time of the third drying step is changed from the drying step of FIG. Also,
In the third drying step, when the amount of clothing is 1 kg or less, the rotation time limit of the rotary wing 5 is turned on for 0.3 seconds and 2.7 seconds off. .5 seconds off. Other operations in each step are the same as those in the first embodiment.

As described above, according to the present embodiment, by changing the time from the first drying step to the third drying step according to the amount of clothes, the drying rate can be substantially 90% regardless of the amount of clothes.
, The third drying step can be performed, and drying can be realized without drying unevenness and with reduced wrinkles.

Further, by changing the rotation time of the rotor 5 in accordance with the amount of clothing, that is, when the amount of clothing is large, the on-time is extended, and the third drying process is performed while changing the clothing up, down, left, and right. Therefore, the problem of uneven drying is eliminated. In addition, when the amount of clothing is small, warm air is evenly applied without changing the clothing up, down, left, and right. Therefore, by shortening the ON time, it is possible to dry the clothing without damage, entanglement, and wrinkles.

In the present embodiment, the amount of clothing is divided into four stages. However, this effect can be further enhanced by dividing the amount of clothing into more stages.

As means for detecting the amount of laundry, the inertial rotation of the motor 9 when the rotor 5 is rotated is detected, but the current of the motor 9 when the rotor 5 is rotated is detected. The same effect can be obtained as a method of performing the above.

(Embodiment 3) As shown in FIGS. 7 and 8, the temperature detecting means 40 detects the temperature of the circulating air, and is provided between the outlet of the drying blower 12 and the heater 13 to control the temperature. The means 24 detects the end of drying based on at least data from the temperature detecting means 40 in the last step. The other configuration is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.

The operation of the above configuration will be described with reference to FIGS. 9 and 10. Temperature detection means 4 during drying process
The circulating air temperature detected at 0 changes as shown in FIG.

That is, when the drying process starts, the drying blower 12 and the heater 13 operate, and the hot air circulates in the circulation path. The warm air blown out from the warm air outlet 16 to the inner tank 4 is sprayed on the wet clothes agitated by the rotary wings 5 to perform efficient drying.

Further, the hot air which has been deprived of moisture from the clothes and becomes humid passes through the circulation duct 11 and exchanges heat through the wall surface of the circulation duct 11 by the air blown by the cooling blower 17. At this time, the hot air cooled to the dew point forms dew condensation on the inner wall surface of the circulation duct 11.

In the constant-rate drying period shown in FIG. 9, the amount of moisture evaporated from the clothes is constant (equilibrium state), and the cooling effect by the cooling air is consumed in a state change called condensation.
1 and the circulating air temperature detected by the temperature detection means 40 remain in an equilibrium state. Further drying proceeds, and the rate of drying evaporates from the clothing gradually decreases, and the temperature of the circulating air rises. Thus, the temperature detected by the temperature detecting means 40 in the constant rate drying period is increased. If the temperature rises by ΔT from Ta, the end of drying is detected.

FIG. 10 is a flowchart showing the flow of each step in the drying step. Steps 110 to 113, 115 and 116 are performed.
Are the same as Steps 100 to 105 in FIG. 5 described in the first embodiment, and thus description thereof will be omitted.

In step 114, it is determined whether or not the above-mentioned drying detection has been completed during the third drying process. If not, the process returns to step 113 to perform the third drying process. If the drying detection is completed in step 114, the process proceeds to step 115, in which a blowing process for driving the drying blower 12 and the cooling blower 17 is performed, and then drying is finished in step 116.

As described above, according to the present embodiment, the temperature detecting means 40 is provided between the outlet of the drying blower 12 and the heater 13 so as to detect the temperature of the circulating air. When the temperature rises by ΔT from the temperature Ta detected by the means 40, the end of drying is detected, so that the drying can be completed in a drying time according to the amount of laundry and the ambient temperature, and the state of undried or over-dried Will not end.

[0076]

As described above, according to the first aspect of the present invention, the outer tub elastically suspended from the housing and the rotation center axis is provided in the vertical direction. An inner tank rotatably supported, a rotating blade rotatably provided at an inner bottom of the inner tank, a driving unit for driving the inner tank or the rotating blade, and a blowing unit for blowing circulating air into the inner tank Heating means for heating the air blown by the blowing means, cooling blowing means for introducing cooling air from outside into the housing, and operations of the driving means, blowing means, heating means, cooling blowing means, etc. Control means for controlling the drying process by controlling the drying process, wherein the control means is a time ratio of the time period of the tank rotating mode of drying while rotating the inner tank and the rotating blade rotation mode of drying while rotating the rotating blades. It has two or more different processes, and as the drying progresses, Since the process in which the time ratio of the rotating blade rotation mode is high is performed, the drying rate of the laundry is low in the first half of the drying, so that the tub rotation is mainly performed to reduce the occurrence of wrinkles caused by cloth entanglement. In the latter half of the drying, the rotation is mainly performed by the rotor rotation, so that even if there is a lot of laundry, the laundry can be switched up, down, left, and right, and the warm air can be applied evenly to the laundry, so uneven drying And can be dried efficiently.

According to the second aspect of the present invention, the control means sets the time ratio of the tank rotation mode in the first stroke to 90%.
% Or more, laundry cannot be replaced by drying only by rotating the tub, so hot air concentrates on the upper laundry and wrinkles due to thermal stress are likely to occur. By performing drying mainly in the tank rotation mode in which the rotary blade rotation mode is periodically included, generation of wrinkles is suppressed, and drying can be performed efficiently without drying unevenness.

According to the third aspect of the present invention, the control means controls the rotation of the rotor in the rotor rotation mode in the first stroke to perform a weak rotation after a strong rotation. By switching the laundry up, down, left and right by the strong rotation of the wings, warm air does not concentrate on some of the laundry, and wrinkles due to thermal stress can be suppressed. Then, by rotating the rotor blades weakly thereafter, even if the laundry becomes unbalanced in the inner tub due to strong rotation, it can be made uniform, so that the outer tub will be It is possible to prevent the occurrence of abnormal noise caused by a large whirling and hitting the housing.

According to the fourth aspect of the present invention, since the control means sets the last stroke only to the rotary blade rotation mode, the drying rate of the laundry is high in the latter half of drying. Even in the wing rotation mode alone, there is no progress of wrinkles due to the laundry getting entangled, even if there is a lot of laundry, the laundry can be switched up, down, left and right, and the warm air can be evenly applied to the laundry, so there is no drying unevenness Drying can be performed efficiently and the drying time does not become excessively long.

According to the fifth aspect of the present invention, there is provided a laundry amount detecting means for detecting an amount of laundry in the inner tub,
The control means changes the time of each step based on the laundry amount detection result detected by the laundry amount detection means, so that the drying can be completed in a drying time suitable for the amount of laundry, It is possible to realize drying without uneven drying and suppressed generation of wrinkles.

According to the invention of claim 6, there is provided a laundry amount detecting means for detecting the amount of laundry in the inner tub,
The control means changes the rotor blade rotation time in the last stroke based on the laundry amount detection result detected by the laundry amount detection means, so that there is no uneven drying, and there is no drying and untangled drying of the laundry. Can be realized.

According to the seventh aspect of the present invention, there is provided a temperature detecting means for detecting the temperature of the circulating air in the circulation path, and the control means controls at least the temperature from the temperature detecting means in the last stroke. Since the end-of-drying detection is performed based on the data, the drying can be completed in a drying time according to the amount of laundry and the ambient temperature.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of a main part of the washing and drying machine.

FIG. 3 is a timing chart showing a method of driving a motor of the washing and drying machine.

FIG. 4 is a front view of an operation display unit of the washing and drying machine.

FIG. 5 is a main part flowchart showing a drying process of the washing and drying machine.

FIG. 6 is a main part block circuit diagram of a washing / drying machine according to a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a washing / drying machine according to a third embodiment of the present invention.

FIG. 8 is a block diagram of a main part of the washing and drying machine.

FIG. 9 is a time chart showing a temperature change in circulation air of the washing and drying machine;

FIG. 10 is a main part flowchart showing a drying process of the washing and drying machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Outer tank 4 Inner tank 5 Rotating blade 9 Motor (driving means) 12 Drying blower (blowing means) 13 Heater (heating means) 17 Cooling blower (cooling blowing means) 24 Control means

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Wataru Uchiyama 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 72) Inventor Makio Tahara 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. MA10

Claims (7)

[Claims] 1. An outer tub elastically suspended in a housing, an inner tub having a rotation center axis in a vertical direction and rotatably supported in the outer tub, and rotatable on an inner bottom of the inner tub. Rotating blades provided in the, the driving means for driving the inner tank or the rotating blades, blowing means for blowing circulating air into the inner tank, heating means for heating the air blown by the blowing means, A cooling air blowing means for introducing cooling air from outside into the housing, and a control means for controlling operations of the driving means, the air blowing means, the heating means, the cooling air blowing means and the like to control a drying process, and the control means Has two or more steps having different time ratios between a tank rotation mode for drying while rotating the inner tank and a rotor rotation mode for drying while rotating the rotor, and as the drying proceeds, the rotor rotation mode To perform a process with a high time ratio Washing and drying machine. 2. The washing and drying machine according to claim 1, wherein the control means sets the time ratio of the tub rotation mode in the first stroke to 90% or more. 3. The washing and drying machine according to claim 2, wherein the control means performs the rotation of the rotor in the rotor rotation mode in the first stroke, after the strong rotation, performs the weak rotation. 4. The washing and drying machine according to claim 1, wherein the control means performs the last stroke only in the rotary blade rotation mode. 5. A laundry amount detecting means for detecting an amount of laundry in the inner tub, wherein the control means changes the time of each stroke based on the laundry amount detection result detected by the laundry amount detecting means. The washing and drying machine according to claim 1, wherein 6. A laundry amount detecting means for detecting an amount of the laundry in the inner tub, wherein the control means detects the amount of the laundry in the inner tub. 5. The washing / drying machine according to claim 1, wherein a rotation time period is changed. 7. A temperature detecting means for detecting the temperature of the circulating air in the circulation path, wherein the control means detects the end of drying based on at least data from the temperature detecting means in the last stroke. The washing and drying machine according to claim 1 or 4, wherein