JPH0938390A - Clothes dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently perform the loosening of clothes to be dried, and suppress the generation of an uneven drying, wrinkles and the deformation of clothes by a method wherein a data-detecting means for clothes to be dried, which detects the data of clothes to be dried being housed in a drum, is provided, and the drum is normally or reversely rotated by a cycle which is set based on the detection result. SOLUTION: A pair of electrodes 29 are attached at a lower part of a drum front support 6 in such a manner that they may face the inside of a drum 4. With the electrodes 29, clothes being housed in the drum 4 come into contact by stirring by the rotation of the drum 4, and at every contact, the resistance value between the electrodes 29 changes from the value in a non-contact state, and the amount of clothes, a dehydrating factor and a drying factor are detected by measuring the number of times of the changes of the resistance value between the electrodes 29 per unit period of time. Then, a microcomputer makes the drum perform a loosening operation by normally or reversely rotating the drum 4 by a set cycle in response to the detection results. Thus, by performing the loosening operation by a pattern which is suitable for the actual data of clothes, the clothes can be sufficiently loosened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type clothes dryer, and more particularly to a clothes dryer which is operated for loosening.

[0002]

Conventionally, in a drum type clothes dryer, it is intended that the clothes to be dried are agitated and dried by the drum containing and rotating the clothes to be dried. However, in fact, there is a problem that the folding and the clothes to be dried are entangled with each other, resulting in unevenness in drying, wrinkling, and loss of shape, and in addition, the drying time is prolonged.

For this reason, there is provided an apparatus in which clothes to be dried are loosened during the drying operation. In the conventional loosening operation, the drum is normally or reversely rotated in a short cycle at the beginning of the drying operation, or the drum is reversed when the drying rate of the clothes to be dried reaches a predetermined drying rate. However, in each case, there is only one pattern of forward and reverse rotation or reverse rotation, and it is not possible to obtain a sufficient effect for loosening clothes to be dried.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to sufficiently loosen clothes to be dried, and to prevent uneven drying, wrinkling, and deformation from occurring. , To provide a clothes dryer capable of shortening the drying time.

[0005]

In order to achieve the above object, in a clothes dryer of the present invention, firstly, a drum for containing clothes to be dried, a drum driving device for rotating and driving the drum, and A warm air supply device for supplying warm air into the drum, comprising a dried clothes data detection means for detecting data of the dried clothes contained in the drum, and based on the detection result. It is characterized in that the drum is controlled to perform a loosening operation by rotating the drum forward and backward at a set cycle. According to the first means, the unraveling operation is performed in which the drum is normally and reversely rotated at a cycle according to the actual data (for example, the amount, the type, the degree of wetness, etc.) of the clothes to be dried contained in the drum.

Secondly, in the clothes dryer of the present invention,
During the unraveling operation, the drum is controlled so as to rotate in the forward and reverse directions even when the number of times is set based on the detection result of the dried clothes data detecting means. According to the second means, the unraveling operation is performed not only in the cycle corresponding to the actual data of the clothes to be dried accommodated in the drum but also in the normal and reverse rotation of the drum in the number of times.

Thirdly, in the clothes dryer of the present invention,
During the unraveling operation, the drum is controlled so as to rotate forward and backward even at a rotation speed set based on the detection result of the dried clothes data detection means. This third
According to the means, the unraveling operation is further performed by rotating the drum forward and backward not only in the cycle and the number of times according to the actual data of the clothes to be dried contained in the drum but also in the rotation speed.

Fourthly, in the clothes dryer of the present invention,
It is characterized in that the unraveling operation is controlled at the initial stage of the drying operation. According to the fourth means, the clothes to be dried are disentangled in the initial stage of the drying operation, and the subsequent drying operation is performed in the disentangled state.

Fifth, in the clothes dryer of the present invention,
It is characterized in that the unraveling operation is controlled after the drying rate of the clothes to be dried reaches a predetermined drying rate. According to the fifth means, the loosening operation is performed without losing the timing of its execution.

Sixth, in the clothes dryer of the present invention,
After the loosening operation is performed, the dried clothes data detecting means again detects the clothes to be dried data, and the subsequent operation is controlled based on the detection result. According to the sixth means, the operation after the loosening operation is performed according to the data of the clothes to be dried, which is the result of the loosening operation.

Seventh, in the clothes dryer of the present invention,
It is characterized in that the forward / reverse rotation cycle of the drum is increased / decreased stepwise or randomly so as to perform a loosening operation. According to the seventh means, the loosening operation is performed in a more varied manner.

Eighth, in the clothes dryer of the present invention,
Instead of the normal and reverse rotation of the drum, the control is performed such that the loosening operation is performed by intermittent rotation in one direction.
According to the eighth means, the loosening operation is performed with a more economical structure.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
This will be described with reference to FIGS. 1 to 9. First, FIG. 2 shows the overall structure of the clothes dryer. A clothes entrance 2 is formed in the center of the front part of the outer box 1, and a door 3 for opening and closing the entrance 2 is pivotally installed. A drum 4 that constitutes a drying chamber is housed inside the outer box 1, and a large-diameter opening 5 on the front surface of the drum 4 is fixed to a portion of the outer box 1 around the clothes inlet / outlet 2. The drum front support 6 is rotatably supported, and the shaft 7 provided at the center of the rear surface is also rotatably supported by the drum rear support 8 installed on the rear portion of the outer box 1.

A casing 9 is provided between the rear surface of the drum 4 and the drum rear support 8, and a fan 10 can be rotated on the shaft 7 of the drum 4 in the casing 9. It is attached to and installed in.

Here, the fan 10 has a double-blade shape having a front blade portion 10a and a rear blade portion 10b, and is made of a heat exchange material (heat transfer material) so that it can also function as a dehumidifier as described later. A motor 11 arranged in the upper part of the outer box 1 outside the drum 4 is rotationally driven via a pulley 12, a belt 13 and a pulley 14.
Further, the drum 4 is rotatably driven by the motor 11 via the pulley 15 and the belt 16, so that they function as a drum driving device for rotatably driving the drum 4. The motor 11 can rotate in both forward and reverse directions.

In the rear half of the casing 9, the central portion is the outside air passage 17 formed in the drum rear support 8 and the outer case back plate 1.
An outside air intake 19 formed in the central portion of 8 communicates with the outside of the machine, and a lower part communicates with the outside of the machine through an outside air return port 20 formed in a lower part of the outer case back plate 18.

On the other hand, in the front half of the casing 9, the central portion has an intake port 21 formed in the casing 9 and an exhaust port 22 formed in the rear central portion of the drum 4, so that the filter 2
3 is placed in between and communicates with the inside of the drum 4, and the lower portion has an outlet port 24 formed in the casing 9, a connecting duct 25 connected thereto, and a heater duct 2 connected to the connecting duct 25.
6, and the warm air outlet 27 formed in the lower part of the front portion of the drum front support 6 communicates with the inside of the drum 4. A heater 28 is disposed in the heater duct 26. In particular, the heater 28 is composed of a PTC heater having a positive temperature characteristic, and further, as shown in FIG. 3, a first heater 28a and a second heater 28a. It consists of 28b.

When the motor 11 is turned on, the motor 11 rotates the drum 4 from the pulley 15 via the belt 16, and at the same time, the fan 10 is driven from the pulley 12 via the belt 13 and the pulley 14. Is rotated.
By the rotation of the fan 10, the air in the drum 4 passes through the filter 23, and further from the exhaust port 22 of the drum 4 to the intake port 21 of the casing 9, the front half of the casing 9, the exhaust port 24, the connecting duct 25, the heater duct 26. In order,
It is returned to the drum 4. Further, from the rear of the outer case 1, the air outside the machine passes through the outer air intake 19 of the outer case back plate 18 through the outer air vent 17, the latter half of the casing 9 and the outer air return port 20 in order, and then the outer case 1 In the casing 9, the air inside the drum 4 and the air outside the outer box 1 contact with the fan 10 as a boundary to exchange heat with each other, thereby dehumidifying the air inside the drum 4.

When the heater 28 is turned on, the dehumidified air is heated by the heater 28 into warm air in the process of passing through the heater duct 26, and is supplied into the drum 4 to be covered. The dried clothes (not shown) are used for drying, and therefore, the casing 9, fan 10, motor 11, pulley 12, belt 13, pulley 14, connecting duct 25, heater duct 26, and heater 28 thereof are used for the drum 4. It functions as a warm air supply device for supplying warm air into the inside.

At the lower part of the drum front support 6, a pair of electrodes 29 is attached so as to face the inside of the drum 4. This electrode 2
In the drum 9, the clothes to be dried contained in the drum 4 are
The contact between the electrodes 29 changes with each contact due to the agitation caused by the rotation of the electrodes 29, and the resistance value between the electrodes 29 changes lower than that in the non-contact state. By measuring the number of emitted signals) it is possible to detect the amount of clothes to be dried. FIGS. 4 and 5 show the relationship between the amount of clothes to be dried and the number of signals emitted from the electrodes 29, the difference in the kinds of clothes to be dried (towel and round neck shirt) (FIG. 4), and the dehydration rate of the clothes to be dried. The difference in (wetness) (FIG. 5) indicates that, regardless of the type of clothes to be dried and the dehydration rate, the greater the amount of clothes to be dried, the greater the number of signals emitted from the electrodes 29. I understand.

Further, in this case, regarding the type of clothes to be dried, the pile weave towel has a larger surface area than the plain weave round neck shirt and is more likely to come into contact with the electrode 29, so that the number of signals emitted from the electrode 29 is also towel. Is more than a round neck shirt, and thus the electrode 29 can detect the type of clothes to be dried. On the other hand, with respect to the dehydration rate of the clothes to be dried, the lower the dehydration rate (the higher the degree of wetness), the heavier the weight becomes, and the number of signals emitted from the electrode 29 also has the higher the degree of dehydration (the lower the degree of wetness). Therefore, the electrode 29 can detect the dehydration rate (wetness) of the clothes to be dried.

However, the amount and type of the clothes to be dried and the dehydration rate (wetness) are data of the clothes to be dried, and therefore the electrode 29 functions as a means for detecting the clothes to be dried. In addition, in this case, the degree of change in the resistance value between the electrodes 29 becomes smaller as the amount of water remaining in the clothes to be contacted decreases. Therefore, the degree of change in the resistance value between the electrodes 29 is measured. By doing
It is possible to detect the drying rate of the clothes to be dried, and therefore, the electrode 29 also functions as a drying rate detecting means.

Now, FIG. 3 shows main components of the control circuit, which is the center of the microcomputer 30.
Is designed to function as a control means, and the power source 31
Is supplied with the required DC power from the rectifier circuit 32. Also, this microcomputer 30
Is supplied with a clock pulse from the clock pulse generation circuit 33, and in addition, it is arranged at the intake port 21 of the casing 9 to detect the temperature of the warm air discharged from the drum 4. A temperature detection signal is input from the temperature sensor 34 (see FIG. 2), and a switch input unit 3 including various operation switches including a start switch
Various operation switch signals are input from 5 and the electrode 29
A signal indicating the data of the clothes to be dried and the drying rate is converted into a pulse signal by the detection processing circuit 36 and input.

Then, based on those inputs and the control program stored in advance, the microcomputer 30 causes the heater 28 (the first heater 28a and the second heater 28b), the motor 11, and the buzzer serving as a notification means. A drive control signal is applied to a drive circuit 38 for driving 37. Further, a power switch 39 is inserted and connected to a circuit from the power supply 31 to the heater 28, the motor 11, and the buzzer 37.

Next, the operation of the above configuration will be described. As shown in FIG. 1, when the microcomputer 30 is powered on and a start switch is turned on,
When the operation is started, first, the electrode 2
The detection of the amount of clothes to be dried in the drum 4 by 9 is started (step S1). In this detection, the motor 11 is turned on in the normal rotation (step S2), for example, it is determined whether or not 2 [minutes] have elapsed (step S3), and when it is determined that it has elapsed, the detection is terminated. (Step S
4) That is, the amount of clothes to be dried is detected by the normal rotation of the drum 4 due to the normal rotation of the motor 11 for 2 [minutes].

Next, based on the detection result, the drum 4
The forward / reverse rotation cycle T of the (motor 11) and the forward / reverse rotation number N are set (step S5). FIG. 6 shows the relationship between the number of signals emitted from the electrode 29, the detection result (the amount of clothes to be dried), the set forward / reverse rotation cycle T of the drum 4, and the set forward / reverse rotation number N. As is apparent from FIG. 6, if the detected amount of clothes to be dried is "large", the set forward / reverse rotation cycle T of the drum 4 is 10 [seconds] for both the forward rotation time T1 and the reverse rotation time T2. If the detected amount of clothes to be dried is "medium", the set forward / reverse rotation cycle T of the drum 4 is 20 [sec] for both the forward rotation time T1 and the reverse rotation time T2, and the detected amount of dried clothes is If "small", the set forward / reverse rotation cycle T of the drum 4 is 30 [seconds] for both the forward rotation time T1 and the reverse rotation time T2.

On the other hand, if the detected amount of clothes to be dried is "large", the number N of forward and reverse rotations of the drum 4 is 10, and if the detected amount of clothes to be dried is "medium", the drum 4 is rotated. The set number N of forward / reverse rotations of 5 is 5, and if the detected amount of clothes to be dried is “small”, the number N of forward / reverse rotations set of the drum 4 is 3.

After setting the forward / reverse rotation cycle T and the forward / reverse rotation number N of the drum 4 in this way, the microcomputer 30 sets the count value n of the forward / reverse rotation number of the drum 4 by a counter (not shown) to "0" (step S6). ), And then, in the loosening operation, while continuing the forward rotation of the motor 11,
The heater 28 is turned on (step S7). Then, after that, it is judged whether or not the on-time t of the motor 11 has reached the set forward rotation time T1 of the drum 4 (step S8). When it is judged that it has been reached, the motor 11 and the heater 28 are
Are both turned off (step S9).

After this, it is judged whether or not a time, for example, 10 seconds, has been passed in anticipation of the drum 4 including the inertial rotation and stopped (step S10). , The motor 11 is turned on in reverse, and the drum 4 is rotated in reverse (step S11). And motor 1
It is judged whether or not the on-time t of 1 has reached the set reverse rotation time T2 of the drum 4 (step S12), and when it is judged that it has been reached, the motor 11 is turned off (step S1).
3).

Further, after that, it is judged whether or not 10 seconds, which is a time period in anticipation of the drum 4 including the inertial rotation, has stopped (step S14), and it is judged that the time has passed. By the way, "1" is added to the count value n of the number of forward and reverse rotations of the drum 4 by a counter (not shown) (step S15). Then, the count value n based on the result
Determines whether or not the set number N of forward and reverse rotations of the drum 4 has been reached (step S16).
It returns to step S7.

On the other hand, if it is determined in step S15 that the count value n has reached the set number N of forward and reverse rotations of the drum 4 (the forward and reverse rotations of the drum 4 have been performed the set number N of times), the loosening is performed. In order to finish the operation and perform the normal drying operation, the motor 11 is turned on in the normal rotation and the heater 2
8 is also turned on (step S17). And drum 4
It is judged whether or not the clothes to be dried in the clothes have been dried to a predetermined degree of dryness (step S18), and when it is judged that the clothes have been dried, a finishing operation is carried out for a certain time (step S).
19) After that, both the motor 11 and the heater 28 are turned off (step S20), and the entire operation is completed. Note that FIG. 7 shows a pattern of the loosening operation in the above case.

As described above, in this structure, the electrode 29 detects the data (in this case, the amount) of the clothes to be dried contained in the drum 4, and the drum 4 is moved forward at a set cycle T according to the detection result. It reverses the loosening operation, and unlike the conventional one that only loosens the pattern, the loosening operation can be performed in a pattern that matches the actual data of the clothes to be dried. You can fully loosen dry clothes.

FIG. 8 shows this. As the amount of clothes to be dried increases, the set forward rotation time T1 and the reverse rotation time T2 in the set forward / reverse rotation cycle T of the drum 4 are shortened, and the more frequently the clothes are covered. By moving the dry clothes, the entanglement can be reduced, that is, the dry clothes can be loosened. Thus, in the case of this structure, it is possible to suppress the occurrence of drying unevenness, wrinkles, and deformation, and it is possible to shorten the drying time.

In addition, in the case of the above structure, the unraveling operation is performed by rotating the drum 4 in the normal and reverse directions even for the number of times set according to the data of the clothes to be dried detected by the electrode 29.
As a result, the unraveling operation can be performed in a pattern that more closely matches the actual data of the clothes to be dried.

FIG. 9 shows this. When the amount of clothes to be dried is small, the movement of the clothes to be dried in the drum 4 is large. The clothes to be dried can be unraveled without applying the clothes. On the other hand, when the amount of clothes to be dried is large, the movement of the clothes to be dried in the drum 4 becomes small. By setting a lot and taking time,
You can loosen clothes to be dried.

Further, in the case of the above-mentioned constitution, the unraveling operation is carried out in the initial stage of the drying operation, whereby the subsequent drying operation can be carried out with the clothes to be dried unraveled. Further, it is possible to more surely suppress the occurrence of shape deformation, and it is possible to further shorten the drying time.

Further, in the case of the above-mentioned structure, the dried clothes data detecting means detects the data of the clothes to be dried by the pair of electrodes 29, and the drying rate detecting means detects the drying rate of the clothes to be dried. Since it also functions as, it can be used as it is, and loosening operation can be performed with a more economical configuration. Further, the temperature sensor 34 may be used to detect the data of the clothes to be dried and may be detected from the difference between the exhaust temperature from the drum 4 and the outside air temperature. It is also highly accurate and therefore can be unraveled in a pattern that more accurately matches the actual data of the clothes to be dried.

In addition, in the case of the above configuration, the drum drive device and the warm air supply device use the common motor 11 as a drive source. Therefore, when the drum 4 is rotated in the reverse direction, the fan 10 is also rotated in the reverse direction, and the casing 9 is rotated. Due to the shape (spiral shape), the blowing efficiency is reduced, and the air volume and velocity are reduced. When the wind speed decreases in this way, the distribution range of the warm air from the warm air outlet 27 into the drum 4 becomes small, and the warm air tends to stay near the hot air outlet 27. Therefore, the clothes to be dried may be exposed to a high temperature in the vicinity of the hot air outlet 27. On the other hand, in the configuration described above, when the drum 4 is reversed, the heating means of the hot air supply device is used. Since the heater 28 is turned off, mere air is supplied into the drum 4 and the warm air outlet 2
Since the clothes to be dried are not exposed to high temperatures near 7, the damage to the clothes to be dried can be eliminated.

In contrast to the above, FIG. 10 shows a different example of the dried clothes data detecting means. The magnet 41 is attached to the pulley 12 on the motor 11 side of the warm air supply device and the motor 11 corresponding thereto. The rotation sensor 44 including a magnetic sensor 43 such as a Hall element mounted on the mounting base 42 is used.

In this case, as the amount of clothes to be dried increases, the rotational load of the motor 11 increases, and it becomes difficult for the pulley 12 attached to the rotary shaft of the motor 11 together with the pulley 15 to rotate. The rotation sensor 4
By detecting with the magnet 41 and the magnetic sensor 43 of No. 4, the amount of the data of the clothes to be dried can be detected.

FIG. 11 shows a further different example of the dried clothes data detecting means. The magnet 45 is attached to the pulley 14 on the fan 10 side of the warm air supply device, and correspondingly is attached to the drum rear support 8. A rotation sensor 47 including a magnetic sensor 46 and a magnetic sensor 46 is shown.

Also in this case, the larger the amount of clothes to be dried,
The rotation load of the motor 11 increases, and the pulley 12
Since it becomes difficult for the pulley 14 connected by the belt 13 to rotate, the rotation of the pulley 14 is detected by the magnet 45 and the magnetic sensor 46 of the rotation sensor 47 so that the amount of the data of the clothes to be dried can be reduced. Can be detected.

FIG. 12 shows a configuration in which these rotation sensors 44 and 47 are incorporated in a control circuit. A rotation detection signal is inputted from the rotation sensors 44 and 47 to the microcomputer 30 as data of the clothes to be dried. Then, based on this, the microcomputer 30 sets the forward / reverse rotation cycle T of the drum 4 and the forward / reverse rotation number N in the same manner as described above. The rotation sensors 44 and 47 are the magnetic sensors 4
It is also possible to replace the magnets 3 and 46 with a light emitting element such as an LED and a light receiving element, and replace the magnets 41 and 45 with a reflecting plate to provide an optical sensor type.

FIG. 13 shows that the drum drive device and the warm air supply device are respectively provided with dedicated motors 48 and 49 as drive sources. With this configuration, even when the drum 4 is rotated in the reverse direction, the fan 10 can be rotated in the normal direction, so that the air volume and the wind speed do not decrease, and thus the heater 2
It is not necessary to turn off 8 either. Therefore, warm air can be supplied into the drum 4 even when the drum 4 is rotated in reverse, and the drying efficiency can be improved without damaging the clothes to be dried. FIG. 14 shows a configuration in which these motors 48 and 49 are incorporated in a control circuit. These motors 48 and 49 are also drive-controlled by the microcomputer 30 via the drive circuit 38 like the above-mentioned motor 11. To be done.

FIG. 15 and FIG. 16 show examples of different execution contents of the loosening operation.
As what is performed once, the heater 28 is not turned on in the first loosening operation. In this case, specifically, the aforementioned step S7 is omitted, and only the motor 11 is turned off in step S101 which replaces step S9.

By doing so, only the wind is supplied to the drum 4 while avoiding the supply of the warm air during the entire period of the first loosening operation, whereby the temperature of the warm air (generally, 120) is supplied. It is possible to prevent the occurrence of wrinkles, deformation of shape, and deterioration of feeling due to [° C].

In this case, after step S16,
Steps S102 to S10 similar to steps S1 to S5
6 and steps S108 to S118 similar to steps S6 to S16, the second loosening operation is executed. Further, it is judged whether or not the clothes to be dried in the drum 4 have reached the predetermined drying rate χ between step S106 and step S108 during the second loosening operation (step S107). When it is determined that it has been performed, the process proceeds to step S108.

That is, in this case, the second loosening operation is executed after the drying rate of the clothes to be dried reaches a predetermined drying rate, and the clothes to be dried are easily dried such as synthetic fibers. In this case, if the loosening operation is performed at an appropriate time, the clothes to be dried may have dried up before that and the loosening operation may be meaningless. By performing the unraveling operation after the drying rate of the clothes to be dried reaches the predetermined drying rate, the unraveling operation can be performed without losing the timing of the execution, thus The clothes can be surely loosened and dried.

Further, in this case, steps S102 to S1
In 05, the amount of clothes to be dried is detected again, and based on the detection result, in step S106, the forward / reverse rotation cycle T of the loosening operation and the forward / reverse rotation number N are reset. By doing so, the second loosening operation is performed according to the data of the clothes to be dried, which is the result of the first loosening operation, and the loosening operation is performed in the pattern that matches the latest data of the clothes to be dried. Can be effective. In this case, the content set based on the re-detection of the amount of clothes to be dried may be the time of the finishing operation in step S19. In this case, the finishing operation is efficiently performed with the latest data of the clothes to be dried. be able to.

FIG. 17 shows a further different example of the contents of execution of the loosening operation, and step S2 instead of step S5.
01 indicates that the forward / reverse rotation cycle T and the forward / reverse rotation number N of the drum 4 are set based on the detection result of the amount of clothes to be dried, and the rotation speed R is also set.

Here, FIG. 6 also shows the relationship between the detected amount of clothes to be dried and the set rotation speed R of the drum 4, and if the detected amount of clothes to be dried is "large", The set rotation speed R of the drum 4 is 50 [rpm], and if the detected amount of clothes to be dried is "medium", the set rotation speed R of the drum 4 is 40 [rpm] and the detected amount of clothes to be dried If the amount is “small”, the set rotation speed R of the drum 4 is 35 [r
pm].

In this case, step S7 and step S
8, it is judged whether or not the rotation speed r of the drum 4 detected by the rotation sensors 44 and 47 is the set rotation speed R (step S202), and it is judged that the rotation speed r is not the set rotation speed R. Then, the energization ratio to the motor 11 is changed so that the rotation speed r of the drum 4 becomes the set rotation speed R (step S203). This control is also performed between steps S11 and S12 (steps S204 and S2).
05).

By doing so, the disassembling operation can be performed at the rotation speed of the drum 4 which matches the actual data of the clothes to be dried, and thus the clothes to be dried can be sufficiently disentangled.

18 to 20 show different examples of the loosening operation pattern, and FIG. 18 shows the drum 4
In FIG. 19, the forward rotation time T1 and the reverse rotation time T2 are different (in the illustrated example, the reverse rotation time T2 is shorter than the normal rotation time T1). 20 (in the case of the illustrated example, the forward and reverse rotation times T1 and T2 in the subsequent stage are made shorter than the forward and reverse rotation times T1 and T2 in the preceding stage). Each of them is shown to be intermittently rotated in the direction (the forward rotation direction in the illustrated example).

It should be noted that all of them have the opposite pattern (see FIG.
In the case shown in FIG. 8, the forward rotation time T1 is set shorter than the reverse rotation time T2. In the case shown in FIG. 19, the forward / reverse rotation time T1 of the preceding stage
, T2 are made shorter than the forward and reverse rotation times T1 and T2 in the subsequent stage.
In the one shown in FIG. 20, the drum 4 may be intermittently rotated in the reverse rotation direction. Further, in the one shown in FIG.
The forward rotation time T1 and the reverse rotation time T2 may be randomly increased or decreased.

The unraveling operation is to prevent the clothes to be dried in the drum 4 from being applied with a constant direction and a constant force.
Various variations as described above are possible. When a certain direction and a certain force are applied to the clothes to be dried, the clothes to be dried are skewed so that, for example, a rectangular cloth is deformed into a parallelogram, and a change in shape, that is, a shape change occurs. or,
In particular, when the clothes to be dried are entangled with each other and a certain force is applied in a certain direction, not only the shape is deformed, but also wrinkles are formed and unevenness in drying occurs.

On the other hand, especially when the loosening operation is performed according to the patterns shown in FIGS. 18 and 19, the loosening operation is performed in a more varied manner, so that uneven drying, wrinkling, and deformation are generated. Can be suppressed more reliably, and the drying time can be further shortened.

Further, in the case of performing the loosening operation in the pattern shown in FIG. 20, the loosening effect as much as the forward / reverse rotation is not obtained, but the switching element for turning on / off the motor 11 is in the forward or reverse direction. Only one of
In addition, since the motor 11 itself may rotate only in one direction, the loosening operation can be performed with a more economical structure.

FIG. 21 shows an example in which the setting contents of the loosening operation are different. As described above, not only the amount of clothes to be dried but also the type of clothes to be dried and the dehydration rate can be detected by the electrode 29. , Shows that the contents of the loosening operation are set more finely by adding these. In particular, large clothes to be dried such as sheets seem to be many in terms of quantity, but it is preferable to set the forward-reverse operation time longer and the number of times larger in loosening operation.

Further, in this case, the rotation speed of the drum 4 is not changed by the dehydration rate of the clothes to be dried.
As shown in, the lower the dehydration rate of the clothes to be dried, the higher the rotation speed of the drum 4 may be set. The lower the dehydration rate of the clothes to be dried is, the heavier the clothes are. Therefore, by setting the clothes to be dried in this way, the clothes to be dried in the drum 4 can be moved smoothly, and the clothes to be dried can be loosened sufficiently. In addition, the present invention is not limited to the embodiment described above and shown in the drawings, and can be implemented with appropriate modifications without departing from the scope of the invention.

[0061]

The clothes dryer of the present invention is as described above, and has the following effects. According to the clothes dryer of claim 1, it is possible to perform the loosening operation by rotating the drum forward and backward at a cycle that matches the actual data of the clothes to be dried contained in the drum, and to sufficiently loosen the clothes to be dried. ,
It is possible to suppress the occurrence of unevenness in drying, wrinkling, and deformation of shape, and to shorten the drying time.

According to the clothes dryer of the second aspect, it is possible to perform the unraveling operation by rotating the drum forward and backward even for the number of times that matches the actual data of the clothes to be dried, and to further unravel the clothes to be dried. According to the clothes dryer of claim 3,
Even if the rotation speed matches the actual data of the clothes to be dried, the drum can be loosened by rotating the drum forward and backward, and the clothes to be dried can be loosened more sufficiently.

According to the clothes dryer of claim 4, it is possible to carry out the subsequent drying operation with the clothes to be dried loosened, so that it is possible to more reliably suppress the occurrence of drying unevenness, wrinkles, and deformation. The time can be further shortened. According to the clothes dryer of the fifth aspect, it is possible to perform the unraveling operation without losing the timing of execution, and it is possible to surely dry the clothes to be dried.

According to the clothes dryer of claim 6, the operation after the loosening operation can be performed according to the data of the clothes to be dried resulting from the loosening operation, and the effective or efficient operation can be performed. it can. According to the clothes dryer of claim 7, it is possible to perform the loosening operation in a more varied manner, and it is possible to more reliably suppress the occurrence of unevenness in drying, wrinkling, and deformation, and to further reduce the drying time. Can be shortened.

According to the clothes dryer of the eighth aspect, only one switching element for connecting and disconnecting the motor is sufficient, and the motor itself can be rotated only in one direction. You can drive. According to the clothes dryer of claim 9, the electrode can be used to perform the unraveling operation with a more economical structure, the detection can be performed with high accuracy, and the actual data of the clothes to be dried can be further improved. You can loosen and drive in the correct pattern.

According to the clothes dryer of claim 10, even when the drum driving device and the warm air supply device use the common motor as a driving source, it is possible to avoid supplying the warm air having a slow wind speed when the drum reverses. Therefore, it is possible to prevent the clothes to be dried from being exposed to a high temperature in the vicinity of the hot air outlet, and it is possible to eliminate the damage to the clothes to be dried. According to the clothes dryer of claim 11, the fan can be rotated in the normal direction even when the drum is rotated in reverse, the air volume and the wind speed are not reduced, the heater is not required to be turned off, and the clothes to be dried are not damaged. You can improve efficiency.

[Brief description of drawings]

FIG. 1 is a flowchart for explaining the operation of an embodiment of the present invention.

FIG. 2 is a longitudinal side view of the whole with a part cut away.

FIG. 3 is a schematic electrical configuration diagram.

FIG. 4 is a characteristic diagram for determining data of clothes to be dried.

FIG. 5 is a characteristic diagram for distinguishing different data of clothes to be dried.

FIG. 6 is a diagram showing setting contents for loosening operation.

FIG. 7 is a diagram showing an operation pattern of a loosening operation.

FIG. 8 is a characteristic diagram showing the effect of the setting contents of the loosening operation.

FIG. 9 is a characteristic diagram showing the effect of different setting contents of the loosening operation.

FIG. 10 is a view corresponding to FIG. 2 showing a different example of the dried clothes data detection means.

FIG. 11 is a view corresponding to FIG. 2 showing a further different example of the dried clothes data detection means.

FIG. 12 is a view corresponding to FIG. 3 in which different clothes to be dried data detecting means are incorporated.

FIG. 13 is a view corresponding to FIG. 2 showing different drive sources of the drum drive device and the warm air supply device.

FIG. 14 is a diagram corresponding to FIG. 3 in which different drive sources are incorporated.

FIG. 15 is a diagram showing an example in which execution contents of a loosening operation are different.
First half equivalent diagram

FIG. 16 is a diagram showing an example in which execution contents of a loosening operation are different.
Second half equivalent diagram

FIG. 17 is a diagram corresponding to FIG. 1 showing a further different example of the execution content of the loosening operation.

FIG. 18 is a diagram corresponding to FIG. 7 showing an example in which the operation pattern of the loosening operation is different.

FIG. 19 is a diagram corresponding to FIG. 7 showing a further different example of the operation pattern of the loosening operation.

FIG. 20 is a diagram corresponding to FIG. 7 showing another different operation pattern of the loosening operation.

FIG. 21 is a diagram showing an example of different settings for loosening operation.
Equivalent figure

FIG. 22 is a characteristic diagram showing a further different example of the setting content of the loosening operation.

[Explanation of symbols]

4 is a drum, 10 is a fan (warm air supply device), 11 is a motor (drum drive device, warm air supply device), 25 is a connecting duct (warm air supply device), 28 is a heater (heating source of the warm air supply device) ), 29 is an electrode (drying clothes data detecting means, drying rate detecting means), 30 is a microcomputer (control means), 44 and 47 are rotation sensors (drying clothes data detecting means), and 48 is a motor (drum drive device). ) 49 indicates a motor (warm air supply device).

Claims (11)

[Claims] 1. A drum having a clothes to be dried, a drum driving device for rotating the drum, and a warm air supply device for supplying warm air into the drum.
It is provided with dry clothes data detection means for detecting the data of the clothes to be dried contained in the drum, and controls the loosening operation by rotating the drum forward and backward at a cycle set based on the detection result. A clothes dryer characterized by comprising control means. 2. The clothes dryer according to claim 1, wherein the control means controls the drum to rotate normally and reversely even during the loosening operation even when the number of times is set based on the detection result of the dried clothes data detecting means. . 3. The control means controls the drum to rotate forward and backward even at a rotational speed set based on the detection result of the dried clothes data detection means during the loosening operation. Clothes dryer. 4. The clothes dryer according to claim 1, wherein the control means controls the loosening operation at the beginning of the drying operation. 5. The clothes dryer according to claim 1, wherein the control means controls the loosening operation to be performed after the drying rate of the clothes to be dried reaches a predetermined drying rate. 6. The control means re-detects the clothes to be dried data by the clothes to be dried data detecting means after performing the loosening operation, and controls the subsequent operation based on the detection result. The clothes dryer according to claim 1. 7. The clothes dryer according to claim 1, wherein the control means controls to perform the loosening operation by gradually or randomly increasing or decreasing the forward / reverse rotation cycle of the drum. 8. The clothes dryer according to claim 1, wherein the control means controls the loosening operation by intermittent rotation in one direction instead of the forward / reverse rotation of the drum. 9. The clothes dryer according to claim 1, wherein the dried clothes data detecting means detects the data of the clothes to be dried by a pair of electrodes. 10. The drum driving device and the warm air supply device use a common motor as a drive source, and the control means controls to turn off the heating means of the warm air supply device when the drum is reversed. The clothes dryer according to claim 1. 11. The clothes dryer according to claim 1, wherein the drum drive device and the warm air supply device each have a dedicated motor as a drive source.