JPH0757278B2 - Dryer - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a dryer in which a start time of a drying operation can be set.

[Technical background of the invention] As is well known, in a dryer, a main body having a rotating drum, a fan, a heater and the like is provided with a drying operation start switch consisting of a manual switch, and immediately after the start operation of the start switch, The rotating drum and the fan are driven, and the heater is energized to generate heat to start the drying operation.

[Problems of background art] By the way, in recent years, there is a tendency that users have various needs for using a dryer, but in a conventional dryer, a drying operation is based on a manual ON operation of a start switch. Since it started immediately, it was sometimes difficult to meet those needs. That is, for example, for the need to use the dryer at midnight when the electricity rate is low, the time when the user should actually start the dry operation is often after the scheduled bedtime, and the bedtime is delayed. You have to wake up at bedtime. In addition, for the need to wear warm objects to be dried immediately after the drying is completed, if the scheduled wearing time is the scheduled wake-up time, the time when the drying operation should start overlaps with the bedtime. We cannot meet your needs. In general, it was inconvenient because the user could not set the desired time period for the dry operation in advance.

[Object of the Invention] An object of the present invention is to make it possible to set a desired time zone for the drying operation in advance, which is extremely convenient, and further, in the waiting time from the time the user sets the time until the drying operation is executed. It is to provide a dryer that can solve various problems such as rust generation.

SUMMARY OF THE INVENTION The present invention is capable of setting a desired drying operation start time or a desired drying operation end time in a main body having a rotating drum, a fan, and a heater, and the set desired drying operation start time or desired drying operation end time. A drive control circuit is provided for determining whether or not a waiting time until the drying operation is executed based on time is provided, and the rotary drum is intermittently driven to rotate during the waiting time, and drying is performed when the waiting time elapses. By executing the operation, it is possible to set the execution time zone of the drying operation as desired by the user's time setting, and the material to be dried is rotated on the rotating drum during the waiting time from the user's time setting time to the start of the drying operation. This is to solve various problems such as rusting caused by being retained at one place inside.

Embodiments of the Invention One embodiment of the present invention will be described below with reference to the drawings.
First, in FIG. 1, 1 is a main body, 2 is an outer box, and 3 is a rotary drum provided inside the outer box 2, to describe its schematic configuration. Reference numeral 4 denotes a fan chamber provided behind the rotary drum 3 which also serves as a heat exchange chamber. A heat exchange type double-blade fan 5 is provided in the fan chamber 4 so as to partition the fan chamber 4 into front and rear. Based on the action, the air in the rotary drum 3 is sucked from the rear of the rotary drum 3 to the front side of the fan chamber 4 and returned to the inside of the rotary drum 3 through the communication duct 6 as shown by the arrow A, and the outside air is blown by the arrow B. As shown in (4), it is sucked to the rear side of the fan chamber 4 and discharged to the outside of the machine. A heater 7 is provided in the discharge portion 6a of the communication duct 6 to heat the recirculated air into the rotary drum 3. As a result, hot air is supplied into the rotary drum 3, and the hot air contributes to the drying of the material to be dried and is then heat-exchanged with the outside air in the fan chamber 4. 8 is disposed above the inside of the outer box 2 and includes the rotating drum 3
And a motor for driving the fan 5 to rotate, and 9 for the rotary drum 3.
An electrode for detecting cloth resistance, which is disposed on the front fixing plate 10 facing inside. Reference numeral 11 is a circuit board on which a drive control circuit 26 (see FIG. 3), which will be described later, is mounted, and this is provided on the upper part of the outer box 2. Reference numeral 12 is an operation panel provided on the front surface of the outer box 3. In FIG. 2 showing the operation panel 12, 13 is a time display composed of a 7-segment type light emitting diode, and 14 to 20 are switches composed of a self-resetting push switch,
Switch 14 is for setting the current time, 15 is for setting the desired time, 16 is for determining the desired time that also serves as a start switch, 17 is for setting the "hour" unit, 18 is for setting the "minute" unit, and 19 is for switching the heater strength and weakness. , 20 are for switching the dry operation course. Switch 17 for setting the "hour" unit and switch 18 for setting the "minute" unit
Is for setting the time in the drive control circuit 26, which will be described later, according to the number of operations, and the switch 14 for setting the current time is used.
The current time is driven on the condition that the
The desired drying end time is set on condition that the switch 15 for setting the desired time is turned on. Further, the heater strength switching switch 19 selects "heater strength" by the first pressing operation and selects "heater weak" by the next pressing operation. Similarly, the switch 20 for changing the dry operation course also selects "careful course", "standard course" and "ironing course" in the order of the pressing operation. 21 to 25
Is a light emitting diode, the light emitting diodes 21 and 22 are for "heater strong" display and "heater weak" display, respectively, and the light emitting diodes 23, 24 and 25 are for "in-depth course" display respectively,
It is for displaying "standard course" and "ironing course". Next, in FIG. 3, reference numeral 26 is a drive control circuit composed of a microcomputer, which has a timekeeping function using an AC power supply. Reference numeral 27 denotes a dryness detection signal output circuit including the electrode 9, which is adapted to give a detection signal corresponding to the dryness to the drive control circuit 26. Further, the drive control circuit 26 includes the switches 14 to 18 and the switch 20.
A switching signal is given from.
Reference numeral 28 is a drive circuit for the display 13, 29 is a drive circuit for the motor 8, and 30 is a drive circuit for the heater 7. The drive control circuit 26 controls the heater 7, the motor 8 and the display 13 according to a preset program as follows.

The operation of the above configuration will be described with reference to FIG. 4 as well. First, after the material to be dried is housed in the rotary drum 3, the heat generation amount of the heater 7 is controlled by operating the switch 19 for selecting the heater strength. Select and then switch 20 for changing the dry operation course.
Select one of the "careful course", "standard course" and "ironing course" by the operation of. here,
When the "careful course" is selected, the drive control circuit 26 determines the time from when the material to be dried reaches a predetermined dryness to the end of drying.
In advance, set a long time, and if the "standard course" is selected, set the time to the standard in advance, and then perform the "ironing course".
If it is set to, the time is set short beforehand. Therefore, the time Tk required for the drying operation is set to be shorter in the order of "careful course", "standard course" and "ironing course". After that, when the switch 14 for setting the current time is operated, the drive control circuit 26 is operated based on the switching signal.
A drive signal is output from the drive circuit 28 to the display 13
Displays the current time at this point. In this case, if there is no change in the display current time, the switch 14 is operated again to set the current time to the display time, but when changing the display time, the switch 17 for setting the "hour" unit and the "Minutes'
The unit setting switch 18 is operated an appropriate number of times to change and set the current time, and then the current time setting switch 14 is operated again to confirm the changed current time. Next, the switch 15 for setting the desired time is operated, and subsequently, the switch 17 for setting the "hour" unit and the switch 18 for setting the "minute" unit are respectively operated a proper number of times to cause the drive control circuit 26 to operate. Set the desired dry operation end time. In this case, the display content of the display 13 is changed from the current time to the desired time for ending the drying operation. Thereafter, the switch 16 for fixing the desired time is operated to cause the drive control circuit 26 to set the desired dry operation end time. Thus, the drive control circuit 26 outputs a short-time drive signal to the drive circuit 29 to rotationally drive the rotary drum 3 and the fan 5, and outputs the dryness detection signal from the dryness detection signal output circuit 27. The amount of material to be dried is detected based on the rising change characteristic, and the time until the material to be dried reaches a predetermined degree of dryness is predicted and set by the detected value of the amount of material to be dried, and this predicted setting time and the set drying operation course are set. Based on the above, the time required for drying (referred to as the drying operation prediction time Ty) is set. The post-drive control circuit 26 calculates the standby time Tt from the current time to the execution of the drying operation based on the present time and the desired drying operation end time set therein and the above-described predicted drying operation time Ty. Then, with respect to the waiting time Tt, time counting is started by, for example, down counting based on the power supply frequency, and determination of whether or not the waiting time Tt has elapsed is started. Thus, the drive control circuit 26 intermittently outputs a drive signal to the drive circuit 29 in parallel with the time counting operation of the waiting time Tt, whereby the motor 8 is intermittently operated, and as a result, the rotation is stopped. The drum 3 and the fan 5 are driven intermittently. As a result, the material to be dried in the rotary drum 3 rolls in the inside intermittently. When the drive control circuit 26 determines that the waiting time Tt has elapsed, the drive control circuit 26 continuously outputs a drive signal to the drive circuits 29 and 30, whereby the rotary drum 3 and the fan 5 are output.
Is continuously driven and the heater 7 is energized to generate heat, and the original drying operation is executed. In this drying operation,
When the dryness detection signal provided from the dryness detection circuit 27 reaches a predetermined value, that is, when the material to be dried reaches a predetermined dryness, the drying operation is terminated after continuing the operation for a predetermined time from this point. . In this case, the actual dry operation time may be slightly shorter than the dry operation estimated time Ty,
In this case, the drive control circuit 26 intermittently outputs a drive signal to the drive circuit 29 for the remaining time to intermittently drive the rotary drum 3 and the fan to rotate. When the predicted dry operation time Ty elapses, a drive signal is output to the drive circuit 28 and the display 13 is clock-displayed.

According to the present embodiment as described above, the drive control which has the time counting function and can set the desired drying operation end time and measures the standby time Tt until the drying operation is executed based on the set desired dry operation end time. Since the circuit 26 is provided and the drying operation is executed when the waiting time Tt elapses, the drying operation can be executed in the period desired by the user, so that the dryer can be operated at midnight when the electricity charge is low. When the user wants to use it, the user can set the desired dry operation end time before going to bed and specify the dry operation time zone based on that setting, so that the user can extend the bed time or wake up once. If you want to wear a warm object to be dried immediately after the drying is finished, even if the wearing time is the wake-up time, this is also the same as before you go to bed. Set desired end time By leave, follow the time zone of the drying operation can specify the completion of the drying operation time, thus the warm material to be dried can be worn to the desired time, may tighten if extremely convenient.

By the way, in the case of setting the time as described above, it is usually conceivable that the dryer is in the drive stop state until the drying operation is actually started. However, in this case, during the waiting time Tt from the time setting to the start of the drying operation, the material to be dried contained in the drum 3 remains in one place inside the drum 3 for a long time. May cause the generation of rust, and since the objects to be dried are kept in close contact with each other for a long period of time, there is a possibility that an unpleasant odor is generated or wrinkles are generated.

However, according to the present embodiment, since the rotary drum 3 is intermittently rotated during the waiting time Tt from the time setting to the execution of the drying operation, it is possible that the material to be dried is retained at one place of the rotary drum 3. In addition to being eliminated, the material to be dried can be appropriately loosened, and thus these problems can be solved.

In particular, according to the present embodiment, the amount of material to be dried is detected based on the degree of dryness detection signal from the degree of dryness detection signal output circuit 27, and the drying operation prediction time Ty is set according to the amount of material to be dried. Since the waiting time Tt until the drying operation is calculated based on the set drying operation predicted time Ty, the start time of the drying operation can be changed appropriately according to the amount of the material to be dried, and the time error is minimized. You can lose it. In this case, as a means for detecting the amount of the material to be dried, a dedicated detecting means may be provided instead of also serving as the dryness detection signal generating circuit 27.

In the above embodiment, the desired drying operation end time can be set, but the desired drying operation start time may be set.

Besides, the present invention is not limited to the above-described embodiments, and can be modified and implemented without departing from the scope of the invention.

[Effects of the Invention] As is apparent from the above description, the present invention can set a desired drying operation start time or a desired drying operation end time in a main body having a rotating drum, a fan, and a heater, and the drying operation can be performed. A drive control circuit is provided to determine whether or not the waiting time until the drying operation is executed based on the desired start time of the operation or the desired end time of the drying operation is provided, and the drying operation is executed when the waiting time elapses. The first feature is that the user can carry out the drying operation in the desired time zone, and thus it is possible to meet the needs of the user and be extremely convenient. It has a second feature in that the rotating drum is intermittently driven to rotate, whereby the material to be dried is kept in a single position in the rotating drum during the waiting time from the time setting to the start of the drying operation. It can be prevented from being left in place and the material to be dried can be loosened appropriately, and as a result, rust can be prevented from being generated on the rotating drum, and an offensive odor and wrinkles can be prevented from occurring on the material to be dried. And so on.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a vertical sectional side view of the whole, Fig. 2 is a front view of an operation panel, Fig. 3 is a block diagram, and Fig. 4 is a stroke diagram. In the figure, 1 is a main body, 3 is a rotating drum, 5 is a fan, 7 is a heater, 8 is a motor, 14 is a switch for setting the present time, 15 is a switch for setting a desired drying operation end time, and 26 is a drive control circuit. Is.

Claims (1)

[Claims] 1. A main body having a rotary drum, a fan and a heater can be set with a desired drying operation start time or a desired drying operation end time, and drying is performed based on the set desired drying operation start time or desired drying operation end time. A drive control circuit is provided to determine whether or not a waiting time until the operation is executed is provided, the rotating drum is intermittently driven to rotate during the waiting time, and a drying operation is executed when the waiting time elapses. Dryer made in this way.