JPH05161796A - Drying machine - Google Patents

Abstract

PURPOSE:To prevent the damage of clothes, the occurrence of wrinkles, and drying irregularities by arranging hot-air feed ports apart laterally from the center of a rotary drum, and making the rotation direction of the rotary drum switchable to three ways: only the direction passing the hot-air feed ports from below to above, only the opposite direction, and both directions in turn. CONSTITUTION:Hot-air feed ports 24 are formed on a drum support plate 5 at positions apart laterally from the center of a rotary drum, and a heater 25 is arranged. The blast by the drive of a fan is fed to the hot-air feed ports 24 via a baffle plate 23 and fed into the rotary drum. Various course setting switches 34a-34d are provided on an operation panel 41, and the rotation direction of the rotary drum is controlled based on the operation of these switches. It is set to only the positive rotation direction passing the hot-air feed ports 24 from below to above in the standard course, it is switched to the positive and reverse directions in turn in the blanket and sheet courses, and it is controlled to only the reverse direction in the delicate course, for example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drier provided with a horizontal shaft-supporting rotary drum.

[0002]

2. Description of the Related Art Conventionally, as is well known, in a drum type dryer having a horizontal shaft-supporting rotary drum, the rotary drum is continuously rotated in a predetermined direction while hot air generated by a heater and a fan is used. The clothes in the rotary drum are dried by passing through the rotary drum.

By the way, recently, with the progress of washing machines, it has become possible to wash from large clothes to small clothes, or from rough clothes to delicate clothes.

[0004]

However, in the dryer having the above-mentioned conventional structure, the standard control method is standard in the unique control system in which the rotary drum is continuously rotated in the predetermined direction and the hot air is passed through the rotary drum. There is no problem in the case of clothes, but especially when the clothes are delicate (weak against heat and cause shrinkage etc. when mechanical force is applied), warm air directly hits the clothes It may get damaged. In addition, when the clothes are large items such as sheets, there is a problem in that entanglement often occurs and uneven drying and wrinkles occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dryer capable of drying clothes in general without causing damage to the cloth, and without causing unevenness or wrinkles. There is

[0006]

A dryer according to the present invention has a horizontal shaft-supporting rotary drum, and warm air generated by a heater and a fan is passed through the rotary drum so that clothes in the rotary drum can be conveyed. In which the hot air supply port for supplying the hot air into the rotary drum is formed at a position laterally displaced from the center of the rotary drum, and the rotary drum is The case where the inner peripheral surface rotates the warm air supply port portion only from the bottom to the top in the first rotation direction, and the first rotation direction and the second rotation opposite to the first rotation direction. It is characterized in that the control means for controlling either the case of alternately rotating in the direction of rotation or the case of rotating only in the second rotation direction is provided.

In this case, the control means may be arranged to intermittently turn on the heater when rotating the rotary drum only in the reverse rotation direction.

[0008]

When the rotating drum is rotated, the clothes inside the container are agitated by repeating the rising of the clothes in the rotating direction along with the rotation of the rotating drum and dropping at a certain height position.

However, when the rotating drum is rotated only in the first rotation direction in which the inner peripheral surface passes through the warm air supply port portion from the bottom to the top, the clothes also warm air according to the rotation. It passes through the supply port from the bottom to the top and drops when it reaches a certain height. In this case, the warm air always hits the clothes, so that the drying efficiency is good. Such a drying operation is suitable for drying clothes that are relatively resistant to heat.

Further, the alternate rotation in the first rotation direction and the second rotation direction opposite to the first rotation direction is suitable for drying large clothes. That is, when the rotating drum rotates only in one direction for large clothes, the clothes may also rotate due to the rotation, resulting in entanglement. However, if the rotating direction is alternately changed in this way, the rotating drum The clothes caught by the rotation in one direction are unraveled by the rotation in the opposite direction of the rotating drum. Therefore, large clothes can be dried without causing uneven drying and wrinkles.

Further, when the rotating drum is rotated only in the second rotating direction opposite to the first rotating direction, the inner surface of the rotating drum passes through the warm air supply port portion from the top to the bottom. Since the clothes rotate like this, the clothes rise in the rotating direction and then fall before reaching the warm air supply port. As a result, the clothes are not directly exposed to the warm air, and therefore, when delicate clothes are dried, they can be dried without causing damage to the cloth.

If the heater is intermittently turned on when the rotary drum is rotated only in the reverse rotation direction, the amount of heat applied to the clothes can be alleviated, so that the cloth damage to the clothes can be further suppressed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, in FIG.
The front cover 2 of the outer box 1 is formed with a clothing entrance / exit 3, and a door 4 for opening / closing the clothing entrance / exit 3 is pivotally installed.
Further, the drum support plate 5 is attached inward.

A front opening 7a of a rotary drum 7 forming a drying chamber 6 in the outer case 1 is rotatably supported on the drum support plate 5 and is provided at the center of the inner wall of the rotary drum 7. The drum shaft 8 thus supported is supported at the center of the front part of the fan casing 9 arranged in the inner part of the outer case 1, so that the rotary drum 7 is supported in a horizontal shaft shape. A filter 10 is attached to the center of the inner part of the rotary drum 7.

Inside the fan casing 9, the front blade portion 11a is provided.
A fan 11 having a double vane shape and having a rear blade portion 11b also serving as a heat exchanger is supported by a shaft 12, and the fan 11 is a first fan provided at the bottom of the outer casing 1.
The motor 13 is driven to rotate via a belt 14. Further, the rotary drum 7 is rotationally driven by a second motor 15 provided at the bottom of the outer case 1 via a belt 16.

The fan casing 9 has a temperature sensor 17 located at a front suction port portion facing the rotary drum 7.
Further, a casing cover 18 that is in airtight contact with the outer peripheral portion of the fan 11 is attached to the fan casing 9. A cover lid 19 and a back lid 20 are attached to the rear of the casing cover 18. Vents 19a and 20a are formed in the cover lid 19 and the back lid 20, respectively.

Next, referring to FIG. 4, a sensor 21 composed of an electrode is arranged on the inner surface of the lower portion of the drum supporting plate 5. A warm air vent 22 is formed in the lower left corner of the drum support plate 5 in the front portion of the fan 11 through a duct (not shown). It communicates with the warm air supply port 24 through 23.

The hot air supply port 24 is formed in the drum support plate 5 at a position displaced laterally (left side) from the center of the rotary drum 7. And this warm air supply port 2
A heater 25 is arranged at 4.

In FIG. 2, a control circuit 26 serving as a control means.
Is composed of a microcomputer and an A / D converter, which comprises a dry load amount judging means 27, an operating time determining means 28, a dryness setting means 29, an operation controlling means 30, a clocking means 31, and a display drive. It functions as the means 32.

The clothing contact signal from the sensor 21 is applied to the dry load amount determining means 27 and also to the operating time determining means 28 via the dryness signal output circuit 33. An operation signal from the switch group 34 is given to the dryness setting means 29 and the operation control means 30. Then, the control circuit 26
Based on the control program stored in advance inside,
In addition, according to these various inputs, the display 35 is controlled via the display drive means 32, the first motor 13 is controlled via the drive circuit 36, and the second motor 15 is controlled via the drive circuit 37. Then, the heater 25 is controlled via the drive circuit 25a.

The first motor 13 and the second motor 15 are brushless motors, and the drive circuits 36 and 37 are brushless motor drive circuits. A DC output from a converter 38 is applied to the drive circuits 36 and 37. Then, the position detection signal from the hall element (not shown) of each motor 13, 15 is detected by the hall sensor output circuit 39,
By being fed back to the drive circuits 36 and 37 via 40, the speed of the motors 13 and 15 is controlled.

On the other hand, FIG. 5 shows an operation panel 41 provided on the front surface of the outer box 1. The operation panel 41 includes:
"Standard" course to dry standard clothes, "Elaborate" course, "Finishing" course, "Ironing" course,
Course change switch 34 for setting "90 minutes" course
a, "Blanket" course setting switch 34 for drying the blanket
b, "sheets" course setting switch 34c for drying sheets, "delicate" for drying delicate clothes
A course setting switch 34d is provided, and a power supply “ON” switch 34e, a power supply “OFF” switch 34f and a start switch 34g are provided.

Now, the control circuit 26 shown in FIG. 2 controls the rotating drum 7 in the three driving modes described below during the drying operation.

That is, when the "standard" course or the "intense" course is set and the start switch 34g is operated, the second motor 15 is rotated in the forward rotation direction,
As a result, the rotary drum 7 is rotated in the forward rotation direction, which is the first rotation direction, and the first motor 13 is rotated, as shown in FIGS. Is rotated and the heater 25 is energized. The rotating direction of the rotating drum 7 at this time is the rotating direction in which the inner peripheral surface of the rotating drum 7 passes through the warm air supply port 24 portion from bottom to top.

With the rotation of the fan 11, however, the air in the drying chamber 6 is sucked toward the front side of the fan 11 and is supplied into the drying chamber 6 from the warm air supply port 24 through a duct (not shown). It When the air passes through the hot air supply port 24, it is heated by the heater 25. In this case, since the warm air supply port 24 is located laterally (left side) from the center of the rotary drum 7, the warm air mainly passes through the left lateral portion of the drying chamber 6.

On the other hand, the clothes inside the rotary drum 7 are, as shown by an arrow A in FIG.
Along with this, stirring is repeated by rising in the direction of rotation and dropping when reaching a certain height position. At this time, the inner peripheral surface of the rotary drum 7 is the hot air supply port 24.
Since the clothes rotate so as to pass through the portion from the bottom to the top, the clothes also pass through the warm air supply port 24 portion. Therefore, the warm air constantly hits the clothes, so that the drying efficiency is good, and it is suitable for drying standard clothes which are relatively resistant to heat.

[Blanket] course or "sheets"
When the course is set and the start switch 34g is operated, the warm air is generated by the fan 11 and the heater 25 in the same manner as described above and is supplied from the warm air supply port 24 into the rotary drum 7. As shown in (b) of FIG. 1, while rotating in the forward rotation direction for a predetermined time (for example, 11.5 seconds), and after a pause for a predetermined time (for example, 1.5 seconds), in the second rotation direction. It rotates in a certain reverse rotation direction (the rotation direction shown in FIG. 7) for a predetermined time (for example, 5.5 seconds). By repeating this, the rotary drum 7 is alternately rotated in the forward rotation direction and the reverse rotation direction.

Large clothes such as blankets and sheets are agitated by the rotation of the rotary drum 7 in the forward rotation direction so as to pass through the warm air supply port 24 as shown in FIG. Then, as the rotating drum 7 rotates in the reverse direction, it is agitated in the reverse direction as shown in FIG. As a result, the clothes are dried so that the clothes do not get tangled and wrinkles do not occur. In other words, if you rotate a large garment such as a blanket or sheets in only one direction, the garment will also rotate due to the rotation, and the entanglement may be dried without being removed. As in the example, when the rotating direction of the rotating drum 7 is alternately changed, the clothes entangled by the rotating drum 7 rotating in one direction are unraveled by the next rotating drum 7 rotating in the opposite direction. As a result, large clothes can be dried without causing uneven drying and wrinkles.

Further, when the "delicate" course is set and the start switch 34g is operated, the fan 11 is operated.
The warm air is generated by the heater 25 in the same manner as described above and is supplied from the warm air supply port 24 into the rotary drum 7. The rotary drum 7 is rotated by the second rotation as shown in (c) of FIG. It is rotated only in the reverse rotation direction (the rotation direction shown in FIG. 7).

As a result, the rotary drum 7 rotates so that its inner surface passes through the warm air supply port 24 from top to bottom, so that the clothes rotate as indicated by arrow B in FIG. After rising in the direction, it comes to fall before reaching the hot air supply port 24. As a result, the clothes are not directly exposed to the warm air, and therefore, when delicate clothes are dried, they can be dried without causing damage to the cloth.

Next, FIG. 8 shows a second embodiment of the present invention. In this second embodiment, "delicate" is used.
When the course is set, the rotating drum 7 is intermittently rotated in the reverse rotation direction, and the heater 25 is intermittently turned on (energized). In this case, the ON timing of the heater 25 is matched with the idle period of the rotary drum 7.

According to this embodiment, since the heater 25 is intermittently turned on, the amount of heat applied to the clothes can be alleviated, and the occurrence of cloth damage on the clothes can be further suppressed. Also,
Since the rotating drum 7 is also rotated intermittently,
This also effectively prevents the occurrence of cloth damage on the clothes.

The present invention is not limited to the above-described first and second embodiments. For example, the hot air supply port may be on the right side instead of the left side, within the scope of the invention. Various modifications can be implemented.

[0034]

As is apparent from the above description, the present invention can obtain the following effects.

According to the dryer of claim 1, a warm air supply port for supplying warm air to the inside of the rotary drum is formed at a position laterally displaced from the center of the rotary drum, and the rotary drum is In the case where the inner peripheral surface is rotated only in the first rotation direction in which the warm air supply port portion passes from the bottom to the top,
Since the control means is provided to control either one of the rotation direction of No. 1 and the second rotation direction opposite to the first rotation direction or the case of rotating only in the second rotation direction. Standard clothing, which is relatively heat resistant, can be heated with sufficient warm air to improve drying efficiency, and for large clothing, it can be dried without causing unevenness or wrinkles, making it more delicate. Such clothes can be dried without causing damage to the cloth, and as a whole, an excellent effect that the entire clothes can be satisfactorily dried.

According to the dryer of claim 2, since the heater is intermittently turned on when the rotating drum is rotated only in the reverse rotation direction, the amount of heat given to the clothes can be alleviated and the clothes are damaged. Generation can be further suppressed.

[Brief description of drawings]

FIG. 1 is a time chart showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration.

[Fig. 3] Overall vertical side view

FIG. 4 is a front view with the front lid removed.

[Fig. 5] Front view of the operation panel

FIG. 6 is a schematic side view showing a stirring condition of clothes.

FIG. 7 is a schematic side view showing a stirring condition of clothes different from that in FIG.

FIG. 8 is a time chart showing a second embodiment of the present invention.

[Explanation of symbols]

7 is a rotating drum, 11 is a fan, 13 is a first motor,
Reference numeral 15 is a second motor, 24 is a hot air supply port, 25 is a heater, and 26 is a control circuit (control means).

Claims (2)

[Claims] 1. A rotary shaft having a horizontal shaft support type rotary drum, wherein hot air generated by a heater and a fan is passed through the rotary drum to dry clothes in the rotary drum. A warm air supply port for supplying the warm air to the inside of the drum is formed at a position laterally displaced from the center of the rotary drum, and the rotary drum has an inner peripheral surface that corresponds to the hot air supply port portion. A case of rotating only in a first rotation direction passing from bottom to top, a case of alternately rotating in the first rotation direction and a second rotation direction opposite to the first rotation direction, and 2. A dryer, which is provided with control means for controlling either of the case of rotating only in the rotation direction of 2. 2. The dryer according to claim 1, wherein the control means is adapted to intermittently turn on the heater when the rotating drum is rotated only in the reverse rotation direction.