JP2003144791A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotate a blowing blade in a washing and drying machine for drying at a proper rotation speed. SOLUTION: The rotation speed of the blowing blade is changed from 3200 (rpm) into 3500 (rpm), for example, at least once in a drying process during cooling operation for making it easier to take out the washing after drying. Circulation blow quantity can be increased to accelerate cooling of the washing. Waiting time for a user to take out the washing can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer / dryer in which the rotation speed of the blowing blades of a blowing device for drying is improved.

[0002]

2. Description of the Related Art In recent years, a washing / drying machine for washing and drying laundry has been provided. In this washer / dryer, an inner tank is provided inside the water tank, and a circulation path is provided outside the water tank. And, in the circulation path, an air blower having a reversing airflow blade for circulating the air inside the water tank, a heater for heating the circulating air, and a dehumidifier for dehumidifying the circulating air are provided, and by these, the inner tank After washing the laundry housed inside, it is dried.

[0003]

In the above washing and drying machine, the rotation speed of the blower blades of the blower device is always constant. The rotation speed of the blower blades of the blower should be set high in order to accelerate the progress of drying and prevent the temperature of the heater portion from rising too much. However, if you simply do so, the blower blades will rotate at high speed even in situations where it is not necessary, and the noise will be noisy,
Sometimes it is necessary to make it a durable specification.
Therefore, the rotation speed of the blower blade of the blower of the washer / dryer has to be set to an appropriate rotation speed.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to provide a washer / dryer which can be operated by rotating the blower blades of a blower device at a rotation speed suitable for the situation.

[0005]

In order to achieve the above object, the washing and drying machine of the present invention comprises, firstly, a water tank and an inner tank which is disposed inside the water tank and communicates with the inside of the water tank. A blower having a circulation path provided outside the water tank, a blower blade for circulating the air inside the water tank through the circulation path, a heater for heating the air circulated by the blower, and the blower A dehumidifier for dehumidifying the air circulated by the device, for washing and drying the laundry contained in the inner tub, wherein the blower blades of the blower device rotate during the drying process. It is characterized by comprising a control means for changing the speed at least once (the invention of claim 1).

According to this, by changing the rotation speed of the blower blade of the blower device at least once during the drying process, which is effective when changed, the blower blade of the blower device can be adjusted to the situation. It can be operated by rotating at a speed.

In this case, the control means may change the rotational speed of the blowing blades of the blowing device during the cooling operation as compared with the drying operation during the drying process (the invention of claim 2). In this one, by increasing the rotation speed of the blower blades of the blower during the cooling operation as compared with the drying operation during the drying process,
The cooling can be accelerated. In particular, at the end of the drying process, in order to make it easier to take out the dried laundry, the cooling operation period is performed by turning off the heater and rotating the inner tub and rotating the blower blades (air blower) of the blower. However, at this time, the rotation speed of the blower blades of the blower is made higher than that during the previous drying operation to increase the amount of circulating air and accelerate the cooling, thereby shortening the waiting time of the user who takes out the laundry. be able to.

Further, the control means may change the rotational speed of the blower blades of the blower device when the heater is energized or the heater is strongly energized during the drying process, when the heater is deenergized or the heater is deenergized. Invention of 3). In this device, the temperature drop can be accelerated by increasing the rotation speed of the blower blade of the blower when the heater is deenergized or the heater is deenergized as compared to when the heater is energized or the heater is energized during the drying process. In this case, conversely, by lowering the rotation speed of the blower blade of the blower, it is possible to suppress the temperature rise of the motor that rotationally drives the blower blade.

In particular, during the drying process, if the temperature in the inner tub may exceed a predetermined value by detecting the temperature in the inner tub, in order to protect the laundry or the parts. When the temperature in the inner tank becomes lower than a predetermined value by temporarily turning off the heater or switching to the weak energization, the heater is controlled to be energized or switched to the strong energization again. When this heater is temporarily turned off or switched to weak energization, the rotation speed of the blower blades of the blower can be increased to increase the amount of circulating air and speed up the temperature drop, thus shortening the time required to finish drying. it can.

Further, when the heater is turned off or switched to weak energization, the amount of heat generated from the heater is small,
Since the amount of heat to be taken from this heater may be small, it does not matter even if the rotation speed of the blower blade of the blower is lowered, and rather, the temperature rise of the motor that rotationally drives the blower blade can be suppressed thereby, so that the motor When there is no margin in heat resistance, it is possible to control it appropriately.

Further, the control means may change the rotation speed of the blower blades of the blower according to the degree of progress of drying during the drying process (the invention of claim 4). In this product, in the first half of the drying process when the laundry contains a large amount of water, the rotation speed of the blower blades of the air blower is increased to increase the amount of circulating air to accelerate the drying of the laundry and In the latter half of the drying process after drying to some extent, the rotation speed of the blower blades of the blower is reduced to reduce the amount of circulating air required to finish the drying residue of the laundry and avoid the generation of unnecessary air volume. , Can improve efficiency.

In addition, the control means may change the rotation speed of the blower blades of the blower in accordance with the change of the rotation speed of the inner tank or the change of the rotation mode during the drying process (the invention of claim 5). . During the drying process, by changing the rotation speed and the rotation mode of the inner tub according to the degree of progress of drying, the position of the laundry in the inner tub can be changed to accelerate the progress of drying,
It is possible to reduce unevenness in drying. Then, by changing the rotation speed of the blower blades of the blower according to the change of the rotation speed or the rotation mode of the inner tank, the above-described effect of accelerating the progress of drying or reducing the unevenness of drying can be achieved. be able to.

For example, at the beginning of the drying process in which the laundry contains a large amount of water, the rotation of the inner tub is made to be low at a long cycle to vigorously agitate the laundry, and in accordance with this, the blowing blades of the blowing device By rotating at a high speed, the circulating air volume is increased, and a large amount of warm air is blown to each part of the laundry to raise the temperature of the laundry and accelerate the progress of drying.

After that, when the laundry is dried, the laundry spreads in the inner tub so that the hot air cannot pass easily, or only the laundry near the entrance of the warm air is easily exposed to the hot air, resulting in unevenness in drying. Therefore, by rotating the inner tub at a high speed with a short cycle, the laundry can be moved to the peripheral wall of the inner tub by centrifugal force so that warm air can easily pass through it, and the laundry in the inner part of the inner tub can be washed. Make sure that the items are exposed to warm air, and place the laundry more frequently. In accordance therewith, by lowering the rotation speed of the blower blades of the blower, it is possible to make the contact between the laundry and the warm air appropriate and prevent uneven drying.

Secondly, the washing and drying machine of the present invention comprises a water tank,
An air blower having an inner tank that is disposed inside the water tank and communicates with the inside of the water tank, a circulation path that is provided outside the water tank, and a reversing airflow blade that circulates the air inside the water tank through the circulation path. And a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower, for washing and drying the laundry contained in the inner tub. What is performed is characterized by comprising control means for changing the rotation speed of the blower blades of the blower during a dehydration step before the drying step and during a drying operation during the drying step (claim 6). invention).

When the temperature of the inner tub and the laundry is raised by sending warm air into the inner tub during the dehydration step before the drying step,
Subsequent drying can be performed in a short time. At this time,
By increasing the rotation speed of the blower blades of the blower during the dehydration process before the drying process compared to during the drying operation during the drying process, a large amount of warm air is sent to raise the temperature of the inner tub and laundry. Therefore, the subsequent drying can be performed in a shorter time. However, in this case,
The rotation noise of the blower blades is added to the rotation noise of the inner tank, and the noise increases.If you want to suppress this noise, set the rotation speed of the blower blades to a lower speed than during the drying operation during the drying process. good.

Thirdly, the washing and drying machine of the present invention comprises a water tank,
An air blower having an inner tank that is disposed inside the water tank and communicates with the inside of the water tank, a circulation path that is provided outside the water tank, and a reversing airflow blade that circulates the air inside the water tank through the circulation path. And a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower, for washing and drying the laundry contained in the inner tub. What is done is characterized by comprising control means for changing the rotational speed of the blower blades of the blower according to the output of the heater during the drying process (the invention of claim 7).

According to this, when the heater output is manually set, or when the heater output is automatically selected and set based on the temperature detection result in the inner tank, the blower of the blower is adjusted according to the heater output. By changing the rotation speed of the blower blade, the air volume can be adjusted to match the amount of heat generated by the heater, and the blower blade can be rotated more than necessary to waste power consumption or shorten the life of the blower. Can be suppressed.

Fourthly, the washing and drying machine of the present invention comprises a water tank,
An air blower having an inner tank that is disposed inside the water tank and communicates with the inside of the water tank, a circulation path that is provided outside the water tank, and a reversing airflow blade that circulates the air inside the water tank through the circulation path. And a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower, for washing and drying the laundry contained in the inner tub. What is done is characterized by comprising control means for changing the rotational speed of the blower blades of the blower during the drying process according to the amount of the laundry stored in the inner tub (the invention of claim 8). ).

As the above-mentioned laundry is dried, the laundry spreads in the inner tub so that it is difficult for hot air to pass through, and it is easy for hot air to hit only the laundry near the hot air inlet. The phenomenon such as uneven drying is more likely to occur as the amount of laundry stored in the inner tub increases.
Therefore, for example, based on the result of detecting the amount of laundry stored in the inner tub at the beginning of the washing process or the beginning of the drying process,
The larger the amount of laundry, the higher the rotation speed of the blower blades of the blower, the better the contact between the laundry and warm air, and the effect of suppressing uneven drying.

Fifth, the washing and drying machine of the present invention comprises a water tank,
An air blower having an inner tank that is disposed inside the water tank and communicates with the inside of the water tank, a circulation path that is provided outside the water tank, and a reversing airflow blade that circulates the air inside the water tank through the circulation path. And a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower, for washing and drying the laundry contained in the inner tub. In what is done, depending on the voltage applied to the heater during its drying process,
The present invention is characterized by comprising control means for changing the rotation speed of the blower blade of the blower (invention of claim 9).

The amount of heat generated by the heater changes depending on the voltage applied to the heater. The higher the applied voltage, the greater the amount of heat generated by the heater. Therefore, by changing the rotation speed of the blower blades of the blower according to the voltage applied to the heater, it is possible to obtain a circulating air flow rate that matches the amount of heat generated by the heater, and thus to keep the temperature of the warm air constant.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. First, as shown in FIG. 2, a laundry entrance / exit 2 is formed in the center of the outer box 1 forming the outer shell of the washer / dryer, and a door 3 for opening / closing the laundry entrance / exit 2 is provided. It is provided. On the back side of the front surface of the outer case 1, an operation circuit unit 4 is provided on the upper side and a control circuit unit 5 is provided on the lower side.

A water tank 6 is arranged inside the outer box 1.
The water tank 6 has a cylindrical shape (drum shape), and has a horizontal axis shape whose axial direction is the front-rear direction (right and left in the figure), and is arranged in a front rising slope to form a pair of left and right (see the figure). (See 3)
It is supported by the elastic support device 7.

Inside the water tank 6, an inner tank 8 is arranged coaxially with the water tank 6 (horizontal axis, inclined forwardly upward). The inner tub 8 is a drum that functions as a washing tub, a dehydrating tub, and a drying tub.
There are a large number of small holes 9 that are both water holes and air holes in the entire body (only a part of which is shown in FIG. 2), so that the inside of the inner tank 8 becomes the inside of the water tank 6. It is in communication.
In addition, a plurality of baffles 10 for scraping laundry are provided on the inner peripheral portion of the body of the inner tub 8 (only one of which is shown).

Both the water tub 6 and the inner tub 8 have openings 11 and 12 for loading and unloading laundry on the front surface, and the opening 11 of the water tub 6 among them is the laundry entry / exit 2 of the outer box 1. Watertightly connected to the opening 1 of the inner tank 8 by the bellows 13.
2 is exposed to the opening 11 of the water tank 6. A ring-shaped rotary balancer 14 is provided around the opening 12 of the inner tank 8.
Is provided.

On the back surface of the water tank 6, a motor 15 is arranged as a drive device for rotating the inner tank 8. In this case, the motor 15 is of an outer rotor type, and the stator 15a thereof is attached to the outer periphery of a bearing housing 16 attached to the central portion of the back of the water tank 6,
Inside the rotor, the rotating shaft 15 mounted at the center of the rotor 15b
c is inserted and is rotatably supported by two bearings 17. Then, from the bearing housing 16 to the water tank 6
The central portion of the back portion of the inner tank 8 is attached to the front end portion of the rotating shaft 15c protruding inward.

A water reservoir 18 is attached to the lower surface of the water tank 6, and a heater 1 for heating washing water is provided inside the water reservoir 18.
9, and a drain hose 21 is connected to the rear of the water reservoir 18 via a drain valve 20. On the other hand, outside the water tank 6,
Particularly, in this case, the circulation path 22 is provided from the front surface portion to the upper surface portion and the rear surface portion. In detail, the circulation path 22 is composed of a duct 23, a heating device case 24, a blower device case 25, and a dehumidifier case 26, and one end of the duct 23 is connected to the opening 11 of the water tank 6. The upper side of is penetrated into the water tank 6 (inner tank 8).

The heating device case 24 has a duct 2 at one end.
3 is connected to the other end of the heating device case 24
One end of the blower case 25 communicates with the other end of the. Then, one end of the dehumidifier case 26 communicates with the other end of the blower case 25, and the other end of the dehumidifier case 26 is connected to the water tank 6 as shown in FIGS. 3 and 4. Water tank 6 through a through hole 27 formed in the lower part of the rear wall
It communicates inside.

A heater 28 for generating warm air is arranged in the heating device case 24, and a heating device 29 is constituted by these. Further, the blower blades 30 are arranged inside the blower case 25, and the motor 3 is provided outside the blower case 25.
1 and a belt transmission mechanism 32 for transmitting the rotational power of the motor 31 to the blower blades 30 are provided to form a blower device 33. In this case, the motor 30 of the blower device 33 is an induction motor so that the rotation speed can be changed by controlling the phase of the induction motor. However, instead of this, as a DC brushless motor, it is controlled by an inverter. The rotation speed may be changed.

Inside the dehumidifier case 26, as shown in FIG. 3, a plurality of walls 34 forming zigzag passages are provided, while on the other hand, on the upper part of the dehumidifier case 26, the dehumidifier case 26 is provided. A water injection pipe 35 for injecting water is connected therein, and these constitute a dehumidifier 36. In the dehumidifier 36, the water injected from the water injection pipe 35 flows down in the dehumidifier case 26 as indicated by the arrow A,
This is a water-cooling type in which air passing through the dehumidifier case 26 as shown by an arrow B is brought into contact with the flowing water to be cooled (heat exchange), thereby condensing water vapor contained in the air to dehumidify.

The dehumidifier case 26 has a shape curved concentrically with respect to the rotation shaft 15c of the motor 15, which is the center of rotation of the inner tank 8, and avoids the motor 15.
It is located on the middle left side. Further, the water injection pipe 35 is, as shown in FIG. 2, a water injection valve 3 disposed in the upper rear part of the outer box 1.
7 has a base end connected to the outlet, and a water supply hose 39 having a base connected to the outlet of a water supply valve 38 (see FIG. 5) for supplying water into the inner tank 8 is provided on the side thereof. Similarly, the tip of this is connected to a water supply case 40 for supplying water into the inner tank 8.

In addition, in the inside of the dehumidifier case 26, for the lowermost portion where the water injected by the water injection pipe 35 and used for dehumidification accumulates as shown by the chain double-dashed line in FIG. A first temperature sensor 41 as a water temperature detecting means for detecting the temperature of the water used for dehumidification is provided, and the temperature of the air passing through the dehumidifier case 26 is provided above the first temperature sensor 41 so as not to be immersed in the accumulated water. A second temperature sensor 42 is provided as an air temperature detecting means for detecting.

In contrast to the above, FIG. 5 shows the microcomputer 43, and this microcomputer 43
Is included in the control circuit unit 5 and functions as control means for controlling the overall operation of the washer / dryer. Various operation signals are input to the microcomputer 43 from an operation input section 44 including various operation switches of an operation panel (not shown). The operation input section 44 is included in the operation circuit unit 4. There is.

In addition, the microcomputer 43 includes the first temperature sensor 41 and the second temperature sensor 4
A temperature detection signal is input from each of 2 and 2, and a rotation detection signal is input from a rotation sensor 45 provided to detect the rotation of the motor 15.

The microcomputer 43, based on the detection result of the rotation sensor 45 when the inner tub 8 containing the laundry is rotated by the motor 15 with a predetermined input, the inner tub 8
And the fall required time until the inner tank 8 inertially rotates after the drive is stopped and the fall required time to fall to the predetermined rotation speed are measured and added. . This added value increases as the amount of laundry stored in the inner tub 8 increases, and decreases as the amount decreases. Thus, the amount of laundry stored in the inner tub 8 is detected, and therefore the rotation sensor 45 and the microcomputer 43 function as a laundry amount detecting means.

In addition, the microcomputer 43 includes
A voltage detection signal is inputted from a voltage sensor 46 which is a voltage detection means.
For example, the power supply voltage applied to the entire washer / dryer is detected and the voltage detection signal is output.

Then, the microcomputer 43 supplies a drive control signal to the inverter circuit 47 for driving the motor 15 based on those inputs and the control program stored in advance. Here, the motor 15 is of the outer rotor type described above and is composed of, for example, a DC brushless motor, and the microcomputer 43 controls the rotation speed and the rotation direction of the motor 15 via the inverter circuit 47. Has become.

In addition, the microcomputer 43 is
The heater 19 for heating the washing water, the drain valve 20, the heater 28 for generating warm air, the motor 31 of the blower 33, the water supply valve 3
8 and a drive circuit 48 for driving the water injection valve 37 are provided with a drive control signal.

Next, the operation of the above structure will be described. The operation of the washer / dryer is roughly divided into a washing step for washing to dehydration (washing, rinsing, and dehydration) and a drying step.

Among them, the washing operation is the laundry entrance / exit 2.
Then, by putting laundry (not shown) in the inner tub 8 and starting the operation with the door 3 closed, the microcomputer 43 detects the amount of laundry, and based on the detection result, the inner tub 8 A necessary amount of water is supplied therein by a water supply valve 38, and at the same time, a necessary amount of detergent is also supplied (detergent supply device is not shown), and the inner tub 8 is rotated by a motor 15, particularly alternately in forward and reverse directions. It is done with the content to rotate. By this operation, the laundry is stirred and washed with the water and the detergent supplied in the inner tub 8.

The microcomputer 4 also operates the rinsing operation.
3 is performed in such a manner that the inner tank 8 is rotated by the motor 15, particularly, the inner tank 8 is alternately rotated in both forward and reverse directions. By this operation, the laundry is stirred and rinsed with the water supplied into the inner tub 8. The dehydration operation is performed by the microcomputer 43 rotating the inner tub 8 in one direction by the motor 15, especially at a high speed. By this operation, the laundry is drained by draining the contained water through the small holes 9 of the inner tub 8.

In the drying process, the microcomputer 43 causes the motor 15 to rotate the inner tank 8 and, in this case as well, alternately rotates the inner tank 8 in both forward and reverse directions, and at the same time, the blower 33
The blower blade 30 of is heated by the motor 31 and the heater 28 for generating warm air of the heating device 29 is energized to generate heat.
Water is injected by the water injection valve 37 into the dehumidifier case 26.

By this operation, when the laundry in the inner tub 8 is agitated, the air in the water tub 6 (air in the inner tub 8) becomes
As shown by the arrow B in FIGS. 2 and 3, the dehumidifier case 2
The inside of 6 is passed through the lower opening 27 to the upper part. Further, at this time, the water injected by the water injection valve 37 flows into the dehumidifier case 26 from above as shown by an arrow A in the figure, whereby the inside of the dehumidifier case 26 is moved to the above-mentioned state. The passing air is dehumidified.

Then, the dehumidified air is
Being sent to the heating device 29 from the downstream air blower 33,
The warm air is generated by being heated by the warm air generating heater 28, and then returned to the inside of the inner tank 8 through the duct 23.
The air returned into the inner tub 8 comes into contact with the laundry in the inner tub 8 to remove moisture in the process of passing through the inner tub 8, and thereafter, again inside the dehumidifier case 26 from the lower part to the upper part. Passing is repeated and circulated, thus,
The laundry is dried.

During the drying process, the microcomputer 43 detects the temperature of the water used for dehumidification in the dehumidifier case 26 by the first temperature sensor 41, and the second temperature sensor 42. The temperature of the air (circulation air) passing through the dehumidifier case 26 is detected. Then, the laundry drying rate at the present time is determined from the detection results, and therefore the microcomputer 43 also functions as a drying rate determining means.

Here, FIG. 6 shows changes with time in the temperature Ta of the air passing through the dehumidifier case 26 and changes with time in the temperature Tw of the water used for dehumidification in the dehumidifier case 26 during the drying process. Since the evaporation of water from the laundry is small in the initial stage of the drying process, both temperatures are not affected to a large extent and rise rapidly. After this, when the evaporation of water from the laundry becomes vigorous, the temperature Ta of the air passing through the dehumidifier case 26 becomes almost constant without increasing.
The temperature Tw of the water used for dehumidification in the dehumidifier case 26 also becomes almost constant.

Since the evaporation of water from the laundry decreases as the laundry is dried, the temperature Tw of the water used for dehumidification with the air passing through the dehumidifier case 26 has a heat exchange rate of As it decreases, it drops rapidly. This water temperature T
The time when the first temperature sensor 41 detects that w has decreased by ΔT1 is the first detection time ta, and the drying rate of the laundry is 90%, for example. After that, the temperature Ta of the air passing through the dehumidifier case 26 rapidly rises, and the second temperature sensor 42 detects that the temperature Tw of the water has risen by ΔT2, but at the second detection time tb. There, the drying rate of the laundry is, for example, 97%.

After this, the microcomputer 43 performs a finishing operation for drying and finishing the laundry by continuing the drying operation up to that time for a predetermined time, and then performs a cooling operation (cool down operation) for a predetermined time. . In this cooling operation, the heater 28 is cut off to rotate the inner tank 8 and blow the air 33.
It is performed only by rotating (blower) the blower blades 30 of
This allows the dried laundry to be cooled for easy removal.

At this time, as shown in FIG.
The rotation speed of the blower blade 30 of No. 3 is higher than, for example, 3200 [rpm] up to then (drying operation period), for example, 3
Set to 500 [rpm]. As a result, the amount of circulating air can be increased to speed up the cooling of the laundry, and the waiting time of the user who takes out the laundry can be shortened.

In contrast to the above, FIGS. 7 to 17 show the second to eleventh embodiments of the present invention. The description of the same parts as those of the first embodiment will be omitted and only the different parts will be described. .

[Second Embodiment] In the second embodiment shown in FIG. 7, the microcomputer 43 controls the rotation speed of the blower blades 30 of the blower device 33 when the heater 28 is energized or strongly energized during the drying process. On the other hand, it is changed when the heater 28 is disconnected or weakly energized. Specifically, the blower device 3 when the heater 28 is energized or strongly energized during the drying process.
The rotation speed of the blower blade 30 of 3 is, for example, 3200 [rp
m], the rotational speed of the blower blade 30 when the heater 28 is cut off or weakly energized is set to, for example, 3500 [rp].
m].

By doing so, the heater 28
It is possible to accelerate the temperature drop when the power is cut off or when a weak current is applied. In particular, the temperature of the air passing through the inside of the dehumidifier 31 detected by the second temperature sensor 42 is the temperature of the air discharged from the inside of the inner tub 8, that is, the temperature of the air inside the inner tub 8, therefore, The second temperature sensor 42 also functions as a temperature detecting means for detecting the air temperature in the inner tank 8.

Therefore, during the drying process, the microcomputer 43 detects the temperature in the inner tank 8 by the second temperature sensor 42 so that the temperature in the inner tank 8 becomes equal to or higher than a predetermined value. In some cases, the heater 28 is temporarily turned off or weakly energized to protect the laundry or parts, and when the temperature in the inner tub 8 falls below a predetermined value, the heater 28 is energized again. Control is performed. When the heater 28 is temporarily cut off or switched to weak energization, the rotation speed of the blower blades 30 of the blower device 33 is changed to a high value as described above, so that the circulating air volume can be increased and the temperature drop can be accelerated, so that the drying is completed. It is possible to reduce the time required until.

[Third Embodiment] In the third embodiment shown in FIG. 8, the microcomputer 43, contrary to the above, sets the rotation speed of the blower blades 30 of the blower device 33 to the heater 28 during the drying process. For example, 320 when energized or strongly energized
On the other hand, the speed is set to 0 [rpm], but when the heater 28 is cut off or weakly energized, it is changed to a low value such as 3000 [rpm]. By doing so, it is possible to suppress the temperature rise of the motor 31 that rotationally drives the blower blade 30.

When the heater 28 is turned off or switched to weak energization, the amount of heat emitted from the heater 28 is small, and the amount of heat to be taken from the heater 28 is small. Therefore, the rotation speed of the blower blades 30 of the blower device 33. It does not matter even if you lower. Rather, by doing so,
Since the temperature rise of the motor 31 that rotationally drives the blower blade 30 can be suppressed, when the heat resistance of the motor 31 has no margin, the control suitable for it can be performed.

[Fourth Embodiment] In a fourth embodiment shown in FIG. 9, the microcomputer 43 changes the rotation speed of the blower blades 30 of the blower device 33 in accordance with the degree of progress of drying during the drying process. I am trying. Specifically, in the first half of the drying operation, the rotation speed of the blower blades 30 of the blower 33 is set to, for example, 3500 [rpm], whereas the rotation speed of the blower blades 30 of the blower 33 is changed in the latter half of the drying operation. For example, it is changed to a low value of 3200 [rpm].

As described above, the microcomputer 43
The first temperature sensor 41 detects the temperature of water used for dehumidification in the dehumidifier case 26, and the second temperature sensor 42 detects the temperature of air passing through the dehumidifier case 26. . Then, the dryness rate of the laundry at the present time is determined from those detection results. The drying operation can be divided into, for example, the first half and the second half according to the determined drying rate of the laundry, that is, the degree of progress of the drying.

FIG. 6 shows the early and late stages of the divided drying operation. In this case, the first temperature sensor 4
The first term is the first term, and the second term is the latter term, at the time point ta when 1 detects the decrease of ΔT1 of the temperature Tw of the water used for dehumidifying the air passing through the dehumidifier case 26.

At the time of dividing the drying operation into the first term and the second term, the dehumidifier case 2 whose first temperature sensor 41 is the first is used.
The time point tb may be the time point tb when the increase in the temperature .DELTA.T2 of the air passing through the inside 6 is detected. Further, as the dehumidifier, unlike the dehumidifier 36, there is an air-cooling type that dehumidifies by cooling the air passing through the dehumidifier with outside air such as air having a temperature lower than that,
When this air-cooling type dehumidifier is adopted, the temperature of the dehumidified air may be detected to divide the drying operation into the first period and the second period.

However, in the first half of the drying operation, the laundry contains a large amount of water, and in the first half of the drying operation, the rotation speed of the blower blades 30 of the blower device 33 is increased to increase the circulating air volume. The laundry can be dried faster. Then, in the latter stage of the drying operation after the laundry is dried to some extent, the rotation speed of the blower blades 30 of the blower device 33 is reduced to reduce the amount of circulating air required to finish the drying residue of the laundry, It is possible to improve efficiency by avoiding generation of useless air volume.

[Fifth Embodiment] In the fifth embodiment shown in FIG. 10, the microcomputer 43 controls the blower 33.
The rotation speed of the blower blade 30 is changed according to the change of the rotation speed or the rotation mode of the inner tank 8 during the drying process. Specifically, in the initial stage of the drying process shown in FIG. 6, as shown in FIG.
The rotation speed is, for example, a stepwise change of 30 to 65 [rpm], and the rotation mode is, for example, 57 seconds of forward rotation (normal rotation)
And rest for 3 seconds, reverse rotation for 57 seconds (reverse rotation)
The rotation speed of the blower blades 30 of the blower device 33 is set to, for example, 3500 [rpm] in accordance with the pattern in which the pause for 3 seconds is alternately repeated.

Next, before the first detection time ta, as a standard content, as shown in FIG. 11B, the rotational speed of the inner tank 8 is gradually increased by 40 to 80 [rpm]. ,
The rotation mode is, for example, a pattern in which a forward rotation for 27 seconds and a pause for 3 seconds, and a reverse rotation for 27 seconds and a pause for 3 seconds are alternately repeated.
The rotation speed of the blower blade 30 is, for example, 3200 [rpm]
I am trying.

Next, after the first detection time ta, as shown in FIG. 11C, the rotation speed of the inner tank 8 is, for example, 65.
With a rapid increase of ~ 90 [rpm], the rotation mode is, for example, 5
The rotation speed of the blower blades 30 of the blower device 33 is, for example, 3000 [rpm] in accordance with the pattern in which the forward rotation for 2 seconds and the pause for 2 seconds and the reverse rotation for 5 seconds and the pause for 2 seconds are alternately repeated. ]]

Next, after the second detection time tb, as in the case before the first detection time ta (as shown in FIG. 11B), the rotation speed of the inner tank 8 is, for example, 40 to 80 [rpm]. With the gradual increase change, the rotation mode is, for example, a pattern in which a forward rotation for 27 seconds, a pause for 3 seconds, and a reverse rotation for 27 seconds and a pause for 3 seconds are alternately repeated. The rotation speed of 30 is, for example, 3200 [r
pm].

During the cooling operation in the drying process, the rotation speed of the inner tank 8 is, for example, 40 to 80 [rp] as described above.
m] and the rotation mode is, for example, a pattern in which a forward rotation of 27 seconds and a pause of 3 seconds, and a reverse rotation of 27 seconds and a pause of 3 seconds are alternately repeated. The rotation speed of the blower blade 30 is set to, for example, 3500 [rpm] in the first embodiment.

As described above, during the drying process, the position of the laundry in the inner tub 8 is changed by changing the rotation speed and the rotation mode of the inner tub 8 in accordance with the degree of progress of drying, and the progress of the drying is accelerated. Or, it is possible to reduce unevenness in drying. Then, by changing the rotation speed of the blower blades 30 of the blower device 33 in accordance with the change of the rotation speed or the rotation mode of the inner tub 8, it is possible to accelerate the above-mentioned drying or reduce the unevenness of drying. The effect can be improved.

For example, at the beginning of the drying process in which the laundry contains a large amount of water, the inner tub 8 is rotated for 57 seconds and then rotated for 3 seconds.
Stirring (raising and lowering) of the laundry is vigorously performed by setting a low speed of 30 to 65 [rpm] in a long cycle of a pause for a second, and the blower blades 30 of the blower unit 33 are set to 3500 [r] in accordance with the stirring.
By rotating the laundry at a high speed of [pm], the circulating air volume is increased, and a large amount of warm air is blown to each part of the laundry to raise the temperature of the laundry and accelerate the progress of drying.

After that, when the laundry is dried (after the first detection time ta), the laundry spreads in the inner tub 8 so that hot air cannot pass easily, or the inlet of the warm air (in the inner tub 8) Opening 12
Hot air is liable to be applied only to the laundry near the part) and uneven drying occurs. Therefore, the inner tub 8 is rotated for 5 seconds, and for a short period of 3 seconds, the cycle is 65 to 90 [rp].
m], the laundry can be washed by centrifugal force to the inner tub 8
The warm air can be easily passed to the peripheral walls of the inner wall of the inner tub 8 and the warm air can be applied to the laundry in the inner tub 8 as well. In accordance therewith, by lowering the rotation speed of the blower blades 30 of the blower device 33 to 3000 [rpm], it is possible to make the contact between the laundry and warm air appropriate and prevent uneven drying.

[Sixth Embodiment] In the sixth embodiment shown in FIG. 12, the microcomputer 43 causes the blower 3 to operate during the dehydration step before the drying step and during the drying operation during the drying step.
The rotation speed of the blower blade 30 of No. 3 is changed. Specifically, the air blower 3 during the drying operation during the drying process
The rotation speed of the blower blade 30 of 3 is, for example, 3200 [rp
m], the rotation speed of the blower blades 30 of the blower device 33 during the dehydration step before the drying step is, for example, 3500.
I am trying to change it to a higher [rpm].

During the dehydration step before the drying step, the temperature of the inner tub 8 and the laundry is raised by sending the warm air generated by the heat generation of the heater 28 and the rotation of the blower blades 30 into the inner tub 8 ( Preheating) and subsequent drying can be performed in a short time. At this time, the blower 3 during the dehydration process before the drying process
By setting the rotation speed of the blower blade 30 of 3 to be higher than that during the drying operation in the drying process as described above, a large amount of warm air can be sent to more easily raise the temperature of the inner tub 8 and the laundry, Therefore, the subsequent drying can be performed in a shorter time.

[Seventh Embodiment] In a seventh embodiment shown in FIG. 13, the microcomputer 43, contrary to the above, sets the rotation speed of the blower blades 30 of the blower device 33 at the time of the drying operation during the drying process. For example, while the speed is set to 3200 [rpm], it is set to, for example, 3000 during the dehydration process before the drying process.
I am trying to change it to a lower [rpm].

When the rotation speed of the blower blade 30 of the blower device 33 during the dehydration step before the drying step is set higher than that during the drying operation during the drying step, the rotation noise of the inner tank 8 causes the blower blade 30 to rotate. Noise is increased by the addition of rotational noise. On the other hand, noise can be suppressed by setting the rotation speed of the blower blades 30 during the dehydration step before the drying step to be lower than that during the drying operation during the drying step as described above.

[Eighth Embodiment] In the eighth embodiment shown in FIG. 14, the microcomputer 43 changes the rotation speed of the blower blades 30 of the blower device 33 by the output of the heater 28 during the drying process. ing. Specifically, when the output of the heater 28 is, for example, 1400 [W], the rotation speed of the blower blade 30 is, for example, 3500 [r].
pm] and the output of the heater 28 is, for example, 800 [W], the rotation speed of the blower blade 30 is, for example, 320.
0 [rpm] and the output of the heater 28 is, for example, 600
When it is [W], the rotation speed of the blower blade 30 is set to, for example, 3000 [rpm]. That is, the heater 2
As the output of No. 8 becomes smaller, the rotation speed of the blower blade 30 is also gradually decreased.

The washer / dryer has a function of manually setting the output of the heater 28 and a function of automatically selecting and setting the output of the heater 28 based on the temperature detection result in the inner tub 8. There is. With these functions, when the output of the heater 28 is manually set, or when the output of the heater 28 is automatically selected and set based on the temperature detection result in the inner tank 8, it is adjusted to the output of the heater 28. Blower 33
By changing the rotation speed of the blower blades 30 as described above, the air volume can be adjusted to match the amount of heat generated by the heater 28, and the blower blades 33 can be rotated more than necessary to wastefully consume electric power, or the blower device. It is possible to prevent the life of 33 from being shortened.

[Ninth Embodiment] In a ninth embodiment shown in FIG. 15, the microcomputer 43 controls the rotation speed of the blower blades 30 of the blower unit 33 in the inner tub 8 during the drying process. I am trying to change it depending on the amount.

Specifically, based on the result of detecting the amount of laundry stored in the inner tub 8 at the beginning of the above-mentioned washing process, the detected amount of laundry is, for example, 4 [kg]. Sometimes, the rotation speed of the blower blade 30 is set to, for example, 3500.
[Rpm], when the amount of laundry is, for example, 3 [kg], the rotation speed of the blower blade 30 is, for example, 3200.
[Rpm], when the amount of laundry is, for example, 2 to 1 [kg], the rotation speed of the blower blade 30 is, for example, 300.
It is set to 0 [rpm]. That is, the rotation speed of the blower blade 30 is set to increase as the amount of laundry increases.

As the laundry is dried, the laundry spreads in the inner tub 8 and it becomes difficult for hot air to pass through.
The phenomenon in which hot air is easily applied to only the laundry near the hot air inlet and uneven drying occurs
The higher the amount of laundry stored inside, the more likely it is. Therefore, as described above, based on the result of detecting the amount of laundry, as the amount of laundry is larger, the blower 33
By increasing the rotation speed of the blower blades 30, the contact between the laundry and warm air is improved, and the effect of suppressing unevenness in drying is exerted. In this case, the amount of laundry may be detected not at the beginning of the washing process but at the beginning of the drying process.

[Tenth Embodiment] In the tenth embodiment shown in FIG. 16, the microcomputer 43 uses the voltage applied to the heater 28 during the drying process to blow the air 3
The rotation speed of the blower blade 30 of No. 3 is changed. Specifically, in this case, when the power supply voltage including the voltage applied to the heater 28 detected by the voltage sensor 46 is 105 [V], for example, the blower blade 30
When the power supply voltage is, for example, 100 [V], the rotation speed of the blower blades 30 is, for example, 3200 [rpm], and when the power supply voltage is, for example, 95 [V], the air is blown. The rotation speed of the blades 30 is, for example, 3000 [rpm]. That is, the higher the voltage applied to the heater 28, the higher the rotation speed of the blower blade 30.

The amount of heat generated by the heater 28 varies depending on the voltage applied to the heater 28. The higher the applied voltage, the more
The amount of heat generated by the heater 28 increases. Therefore, the heater 28
By changing the rotation speed of the blower blades 30 of the blower device 33 according to the voltage applied to the air blower 33 as described above, the amount of circulating air can be adjusted to the amount of heat generated by the heater 28, and the temperature of the warm air can be kept constant. . In this case, the detected voltage may be a voltage directly applied to the heater 28 instead of the power supply voltage.

[Eleventh Embodiment] In the eleventh embodiment shown in FIG. 17, the entire washer-dryer has a vertical axis.
More specifically, in this vertical type washer / dryer, the laundry entrance / exit 1 is provided on the upper surface of the outer box 101 that forms the outer shell of the entire machine.
02, and a lid 103 having a double-fold structure, for example, for opening and closing the laundry inlet / outlet 102 is provided. or,
A unit 104 of an operation circuit and a control circuit is provided on the front side of the upper surface of the outer box 101.

A water tank 105 is arranged inside the outer box 101. This water tank 105 has a bottomed cylindrical shape, and is arranged in a vertical axis whose axial direction is vertical, and the hanging rod 1
It is supported by a plurality of sets (only one set is partially shown) of elastic support devices 107 mainly including 06.

Inside the water tank 105, an inner tank 108 is arranged coaxially with the water tank 105 (vertical axis shape). This inner tank 1
08 also functions as a washing tub, a dehydrating tub, and a drying tub, and has a large number of small holes 109 that are both water passages and ventilation holes all over the body. Cage (only a part of which is shown)
The inside of the tank is communicated with the inside of the water tank 105. Inner tank 10
An agitator 110 for washing is rotatably arranged in the lower part of the inner part 8.

Each of the water tub 105 and the inner tub 108 has openings 111 and 112 for loading and unloading laundry on the upper surface, and a ring-shaped tub cover 113 is attached to the opening 111 of the water tub 105. Then, the opening 1 of the inner tank 108
A ring-shaped rotary balancer 114 is also provided around the periphery of 12.
I am wearing.

On the lower surface of the water tank 105, a motor 1 is provided as a drive device for rotating the inner tank 108 and the stirring body 110.
15 are arranged. In this case, the motor 115 also
It is an outer rotor type DC brushless motor whose rotation speed and rotation direction can be changed by being controlled by an inverter.
The rotary shaft 115c, which is attached to the center of the outer lower surface of 05 and is attached to the center of the rotor 115b, is inserted from the water tank 105 into the inner tank 108, and the stirring body 110 is attached to the upper end thereof.

Although not shown, a clutch mechanism for selectively transmitting the rotation of the rotor 115b to the inner tank 8 is provided in the motor 115. In addition, a drain valve 116 is provided on the lower surface of the water tank 105, connected to a drain port 117 formed at the bottom of the water tank 105, and a drain hose 118 is connected to the drain valve 116.

On the other hand, outside the water tank 105, particularly in this case,
A circulation path 119 is provided from the lower portion to the side portion and the upper surface portion. This circulation path 119 is described in detail in the lower duct 1.
20, a dehumidifier pipe 121, and an upper duct 122, one end of a lower duct 120 of which is connected to the water tank 105 near the drain outlet 117 to communicate with the water tank 105 (inner tank 108). I am letting you.

The dehumidifier pipe 121 has a lower end, which is one end, communicated with the other end of the lower duct 120. The upper end, which is the other end of the dehumidifier pipe 121, has one end of the upper duct 122. Are in communication. Then, the other end of the upper duct 122 is made to face the inside of the water tank 105 through the opening 111 of the water tank 105 so as to communicate with the inside of the water tank 105.

Here, the dehumidifier pipe 121 is formed in a bellows shape, and an air blowing guide 123 and a dehumidifying air blowing device 124 are provided outside the dehumidifier pipe 121 at the upper part thereof, and water is injected. The tip of the tube 125 is introduced to form the dehumidifier 126. This dehumidifier 126
The air introduced from the outside of the outer box 101 by the dehumidifying air blower 124 is, as indicated by an arrow C, a blower guide 123.
Of the dehumidifier pipe 121, and the water injected from the water injection tube 125 flows down in the dehumidifier pipe 121 at the same time as indicated by the arrow D. Cool the passing air as indicated by arrow E by external air and internal running water (heat exchange)
Therefore, it is an air-cooled or water-cooled type that condenses water vapor contained in the air to dehumidify.

In this case, the water injection tube 125 is
One of the outlets of a water supply valve 127 formed of a three-way valve is connected to the other outlet, and the other outlet of the water supply valve 127 is connected to the inner tank 10
8, a water supply pipe 128 for supplying water is communicated with the water supply pipe 8 so that the water supply into the inner tank 108 and the water injection into the dehumidifier pipe 121 are selectively performed.

Further, in the upper duct 122, the blower blade 1
29 and a heater 130 for generating warm air are sequentially arranged from the lower side to the upper side, and the blower blade 129 among them is driven to rotate by a motor (not shown).
31 is configured. In this case, the motor of the blower device 131 is also an induction motor so that the rotation speed can be changed by controlling the phase of the induction motor. However, instead of this, a DC brushless motor may be used for inverter control. The rotation speed may be changed by.

Then, of the inside of the lower duct 120,
A temperature sensor 132 that functions in the same manner as the first temperature sensor 41 described above is provided at the lowermost portion where the water injected by the water injection tube 125 and used for dehumidification is stored.
The second temperature sensor 4 described above is provided near the drain port 117 of 08.
A temperature sensor 133 that functions in the same manner as 2 is provided. In addition, the unit 104 of the operation circuit and the control circuit is provided with a microcomputer 134 which functions as a control means and the like like the microcomputer 43 described above. The electrical configuration of the above vertical axis type washer / dryer is the same as that shown in FIG. 5, and the illustration thereof is omitted.

In the above vertical axis type washer / dryer, the washing operation is carried out by putting laundry (not shown) into the inner tub 108 from the laundry inlet / outlet 102 and starting the operation with the lid 103 closed. Microcomputer 134
Detects the amount of laundry and supplies the required amount of water into the inner tub 108 from the water supply valve 127 through the water supply pipe 128 based on the detection result, and at the same time supplies the required amount of detergent (the detergent supply device (Not shown), and the stirrer 110 is rotated by the motor 115, in particular, the stirrer 110 is rotated alternately in both forward and reverse directions. By this operation, the laundry is stirred and washed with the water and the detergent supplied in the inner tub 108.

The microcomputer 1 also performs the rinsing operation.
34 is performed by rotating the stirring body 110 by the motor 115, in particular, alternately rotating the stirring body 110 in both forward and reverse directions. By this operation, the laundry is stirred and rinsed with the water supplied into the inner tub 108. The dehydration operation is performed by the microcomputer 134 rotating the inner tub 108 in one direction by the motor 115, particularly rotating at high speed.
By this operation, the laundry is drained by draining the contained water from the small holes 109 of the inner tub 108.

In the drying process, the microcomputer 134 causes the motor 115 to rotate the inner tub 108, and in this case also, the inner wing 108 is alternately rotated in both forward and reverse directions, and at the same time, the blower blades 129 of the blower 131 are rotated by a motor (not shown). Then, the hot air generating heater 130 is energized to generate heat, the dehumidifying blower 124 is operated, and water is further injected into the dehumidifier pipe 121 from the water supply valve 127 through the water injection tube 125.

As a result of this operation, when the laundry in the inner tub 108 is agitated, the air in the water tub 105 (air in the inner tub 108) is, as indicated by arrow E, the dehumidifier pipe 12
The inside of 1 is passed from the lower part of the drain port 117 to the upper part.
At this time, the air introduced from the outside of the outer casing 101 by the dehumidifying blower 124 flows around the outside of the dehumidifier pipe 121 as indicated by an arrow C, and the water supply valve is provided inside the dehumidifier pipe 121. The water injected from 127 through the water injection tube 125 flows down as shown by the arrow D. By these, the air passing through the dehumidifier pipe 121 is dehumidified.

Then, the dehumidified air is
The air is sent from the downstream air blower 131 to the warm air generating heater 130 and heated to be warmed, and then returned to the inner tank 108 through the upper duct 122. The air returned into the inner tub 108 comes into contact with the laundry in the inner tub 108 to remove moisture in the process of passing through the inner tub 108, and then again in the dehumidifier pipe 121 from the lower part to the upper part. The fact that it is passed is repeated and circulated,
Thus, the laundry is dried.

Therefore, during this drying process, the microcomputer 134 detects the temperature of the water used for dehumidification in the dehumidifier pipe 121 by the first temperature sensor 132 and the second temperature sensor 133 by the second temperature sensor 133. Dehumidifier pipe 12
The temperature of the air (circulating air) passing through 1 is detected. Then, the drying rate of the laundry at the present time is determined from the detection results (change in temperature is the same as in FIG. 6). Then, the rotation speed of the blower blade 129 of the blower 131 is controlled (changed).
Also, the same operation is performed as in the first to tenth embodiments. Therefore,
Also in the eleventh embodiment, it is possible to obtain the same effects as the first to tenth embodiments.

In any of the structures of the first and second embodiments, the control of the first to tenth embodiments is
They may be obtained not only individually but also in an appropriate combination. In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be appropriately modified and implemented without departing from the scope of the invention.

[0100]

As described above, according to the washer / dryer of the present invention, the rotation speed of the blower blade of the blower device for drying is changed at least once during the drying process in which the change is effective. By changing it, the blower blades of the blower can be rotated and operated at a speed suitable for the situation.

Whether the drying can be performed in a shorter time by changing the rotation speed of the blower blades of the blower between the dehydration step before the drying step and the drying operation during the drying step. Alternatively, noise can be suppressed. Further, by changing the rotation speed of the blower blades of the blower according to the output of the heater during the drying process, the blower blades are rotated more than necessary to wastefully consume the power, and the life of the blower is shortened. It is possible to suppress shortening.

In addition, unevenness in drying can be suppressed by changing the rotation speed of the blowing blades of the blower during the drying process according to the amount of the laundry stored in the inner tub. In addition, the temperature of the warm air can be kept constant by changing the rotation speed of the blower blades of the blower according to the voltage applied to the heater during the drying process.

[Brief description of drawings]

FIG. 1 is a diagram showing a control content showing a first embodiment of the present invention.

[Figure 2] Vertical side view of the entire washer / dryer

[Figure 3] Rear view of the entire washer / dryer with the outer case back plate removed

FIG. 4 is an enlarged vertical side view of the lower portion of the dehumidifier.

FIG. 5 is a block diagram of an electrical configuration.

FIG. 6 is a diagram showing changes over time in the temperature of circulating air and the temperature of dehumidifying water in the drying process.

FIG. 7 is a diagram corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 8 is a diagram corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 9 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 1 showing a fifth embodiment of the present invention.

FIG. 11 shows changes with time in the rotation speed and rotation mode of the inner tank.
The figure shown in the form of type (a, b, c)

FIG. 12 is a view corresponding to FIG. 1 showing a sixth embodiment of the present invention.

FIG. 13 is a view corresponding to FIG. 1 showing a seventh embodiment of the present invention.

FIG. 14 is a view corresponding to FIG. 1 showing an eighth embodiment of the present invention.

FIG. 15 is a view corresponding to FIG. 1 showing a ninth embodiment of the present invention.

FIG. 16 is a view corresponding to FIG. 1 showing a tenth embodiment of the present invention.

FIG. 17 is a view corresponding to FIG. 2, showing an eleventh embodiment of the present invention.

[Explanation of symbols]

6 is a water tank, 8 is an inner tank, 15 is a motor, 22 is a circulation path, 2
8 is a heater, 30 is a blower blade, 33 is a blower, 36 is a dehumidifier, 43 is a microcomputer (control means), 1
Reference numeral 05 is a water tank, 108 is an inner tank, 115 is a motor, 119 is a circulation path, 126 is a dehumidifier, 129 is a blower blade, 130 is a heater, 131 is a blower, and 134 is a microcomputer (control means).

Claims (9)

[Claims] 1. A water tank, an inner tank that is disposed inside the water tank and communicates with the inside of the water tank, a circulation path provided outside the water tank, and the air inside the water tank is circulated through the circulation path. An air blower having a reversing air blower blade, a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower are contained in the inner tank. What is claimed is: 1. A washing and drying machine for washing and drying laundry, comprising a control means for changing the rotational speed of the blower blades of the blower device at least once during the drying process. 2. The washing / drying machine according to claim 1, wherein the control means changes the rotational speed of the blowing blades of the blowing device during the cooling operation as compared with during the drying operation during the drying process. 3. The control means changes the rotation speed of the blower blades of the blower when the heater is energized or the heater is strongly energized during the drying process, when the heater is deenergized or the heater is deenergized. Item 3. The washer / dryer according to item 1. 4. The washing / drying machine according to claim 1, wherein the control means changes the rotation speed of the blowing blades of the blowing device in accordance with the degree of progress of drying during the drying process. 5. The control means changes the rotation speed of the blower blades of the blower device in accordance with the change of the rotation speed of the inner tank or the change of the rotation mode during the drying process. Washing and drying machine. 6. A water tank, an inner tank which is disposed inside the water tank and communicates with the inside of the water tank, a circulation path provided outside the water tank, and air inside the water tank is circulated through the circulation path. An air blower having a reversing air blower blade, a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower are contained in the inner tank. In the case where the laundry is washed and dried, the control means for changing the rotation speed of the blower blade of the blower is provided during the dehydration step before the drying step and the drying operation during the drying step. Characteristic washer-dryer. 7. A water tank, an inner tank disposed inside the water tank and communicating with the inside of the water tank, a circulation path provided outside the water tank, and air circulating inside the water tank through the circulation path. An air blower having a reversing air blower blade, a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower are contained in the inner tank. What is claimed is: 1. A washing and drying machine for washing and drying laundry, comprising control means for changing a rotation speed of a blower blade of the blower according to an output of the heater during a drying process. 8. A water tank, an inner tank arranged inside the water tank and communicating with the inside of the water tank, a circulation path provided outside the water tank, and air inside the water tank is circulated through the circulation path. An air blower having a reversing air blower blade, a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower are contained in the inner tank. And a control means for changing the rotational speed of the blower blades of the blower during the drying process according to the amount of the laundry stored in the inner tub. And a washer / dryer. 9. A water tank, an inner tank disposed inside the water tank and communicating with the inside of the water tank, a circulation path provided outside the water tank, and air inside the water tank is circulated through the circulation path. An air blower having a reversing air blower blade, a heater for heating the air circulated by the air blower, and a dehumidifier for dehumidifying the air circulated by the air blower are contained in the inner tank. In the case of washing and drying the laundry, the washing / drying is characterized by comprising control means for changing the rotation speed of the blower blades of the blower according to the voltage applied to the heater during the drying process. Machine.