JPH0632077Y2 - Dryer controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention is to store the material to be dried such as clothes in a rotary drum and blow the hot air into the rotary drum while rotating the rotary drum. The present invention relates to a control device for a dryer that dries a material to be dried such as clothes for drying a dried material.

<Prior Art> In a conventional drum dryer, an object to be dried is housed inside a rotary drum that rotates in one direction, and hot air is blown into the inside to dry the object to be dried.

However, when the material to be dried is a long-sleeved shirt or a strip of apron, or when a large amount of material to be dried (clothes) is put into the rotating drum, the material to be dried becomes entangled and forms a dumpling, The material to be dried on the inner side is more difficult to dry than the material to be dried on the outer side, and uneven drying occurs.

Therefore, a controller for a dryer has been proposed, which intermittently reverses the rotating drum during normal rotation of the rotating drum.

<Problems to be Solved by the Invention> In the above conventional technology, since the rotating drum and the fan for hot air backwind are generally driven by the same electric motor, the fan also reverses during the reverse rotation of the rotating drum. The amount of air blown by is extremely reduced. In particular, if the reverse operation is performed while the temperature of the material to be dried in the initial stage of operation is increased, the temperature increase rate during that time decreases, and the time until the end of drying becomes long.

Therefore, an object of the present invention is to provide a controller for a dryer, which can prevent the material to be dried from being entangled with each other and can shorten the operation time.

<Means for Solving the Problems> The means for solving the problems according to the present invention is, as shown in FIGS. 1 to 6, housed in a rotary drum of an article to be dried such as clothes and rotating the rotary drum. In a dryer for drying the material to be dried by blowing hot air into the rotating drum,
The operation start means 2 for generating the operation start signal Y2, the normal rotation means 3 for generating the normal rotation signal Y3 of the rotary drum 1 when the operation start means 2 generates the operation start signal Y2, and the operation start means 2 Temperature detection means 51 for detecting a temperature change in the rotary drum 1 after the generation of the operation start signal Y2, and a time point when the temperature in the rotary drum 1 detected by the temperature detection means 51 reaches a set certain temperature. Temperature determining means 54 and 55 for determining that the temperature in the rotating drum 1 has reached a certain temperature by detecting the temperature for a certain time from the above and entering a flat section in which the temperature stabilizes during the certain temperature. A delay unit that intermittently generates a reverse rotation signal Y4 of the rotary drum 1 after the temperature inside the rotary drum 1 reaches a constant temperature as determined by the temperature determination units 54 and 55, and a reverse rotation signal Y4 generated by the delay unit 4. Based on And reversing means 5 for reversing the rotary drum 1 Te in which is provided.

<Operation> In the above-mentioned problem solving means, the delay means 4 has the reverse rotation signal Y4 of the rotary drum 1 until the inside of the rotary drum 1 reaches a constant temperature after the operation start signal Y2 is generated by the operation start means 2.
Does not occur. Therefore, the reverse operation is not performed at the stage of increasing the temperature of the dried object at the initial stage of operation, and it is possible to prevent the temperature increase rate from decreasing during that period, and it is possible to shorten the time until the end of drying.

Then, after the inside of the rotary drum 1 reaches a certain temperature, Y4 is intermittently generated, so that it is possible to prevent the matter to be dried from being entangled.

<Embodiment> First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a functional block diagram of a controller for a dryer showing a first embodiment of the present invention, FIG. 2 is the same flow chart, FIG. 3 is a vertical sectional view of the dryer, and FIG. 4 is an electric circuit diagram of the same. 5 is a diagram showing the relationship between the time from the start of the operation and the temperature, and FIG. 6 is a diagram showing the relationship between the time from the start of the operation and the rotating direction of the rotary drum.

Then, as shown in the drawing, the controller of the dryer according to the present embodiment stores the material to be dried such as clothes in the rotary drum 1 and blows hot air into the rotary drum 1 while rotating the rotary drum 1. In the dryer for drying the object to be dried by the operation start means 2 for generating the operation start signal Y2,
A normal rotation means 3 for generating a normal rotation signal Y3 of the rotary drum 1 when the operation start means 2 generates an operation start signal Y2;
After the operation start signal Y2 is generated by the operation start means 2,
Temperature detecting means 51 for detecting a temperature change in the rotary drum 1
And a flatness which is stable during a certain temperature by detecting the temperature for a certain period from the time when the temperature inside the rotary drum 1 detected by the temperature detecting means 51 reaches a certain certain temperature. Temperature determining means 54 and 55 for determining that the temperature in the rotary drum 1 has reached a certain temperature by entering the section;
A delay unit that intermittently generates a reverse rotation signal Y4 of the rotary drum 1 after the temperature inside the rotary drum 1 reaches a constant temperature as determined by the temperature determination units 54 and 55, and a reverse rotation signal Y4 generated by the delay unit 4. And a reversing means 5 for reversing the rotating drum 1 on the basis of the above.

The dryer of the present embodiment is a rotary drum 1 which is internally provided in a dryer main body 6 and which accommodates articles to be dried such as clothes and is rotatably formed.
And a drum drive device 7 for rotating the rotary drum 1,
Drying device 8 for drying the material to be dried in the rotary drum 1
It is equipped with

The rotary drum 1 is a horizontal cylindrical type having a horizontal rotation axis, and is rotatably held by the dryer body 6. An input port 10 is formed on the outer peripheral surface of the rotary drum 1, and an input port lid 11 is arranged on the input port 10 so as to slide and open. Further, an opening 12 is formed on the upper surface of the dryer main body 6, and an upper lid 13 is provided on the opening 12.

The drum driving device 7 includes an AC electric motor 15 arranged below the dryer main body 6, a drum driving pulley 17 externally fitted and fixed to a rotary shaft 16 of the electric motor 15, a drum driving pulley 17 and a rotary drum 1. The drum belt 18 is wound around the outer circumference.

The drying device 8 forms a flow of air from the intake port 20 of the rotary drum 1 to the exhaust port 21 and also serves as a heat exchanger, and a double-blade fan 22 and air dehumidified by the double-blade fan 22 to the intake port 20. A circulation duct 23 for returning, a heater 24 for heating air arranged in the circulation duct 23, and the like,
The two-blade fan 22 is rotatably fitted onto a rotary shaft 25 supported by the dryer main body 6 of the rotary drum 1. A partition plate 26 is fitted on the outer circumference of the double-blade fan 22 so that the air inside the rotary drum 1 and the air outside the rotary drum 1 are not mixed.

A fan pulley 27 that is rotatably fitted around the rotary shaft 25 is provided adjacent to the double-blade fan 22, and the fan pulley 27 and the double-blade fan 22 are integrally formed. Further, a fan belt 29 is wound around the fan pulley 27 and a fan drive pulley 28 fitted and fixed to the rotary shaft 16 of the electric motor 15.

In the figure, 30 is a thread waste filter and 31 is a drain port.

The temperature detector 51 for measuring the temperature change in the rotary drum 1 includes a first temperature detector 52 arranged near the exhaust port 21 inside the rotary drum 1 and an upstream of the heater 24 in the circulation duct 23. Temperature detector 53 disposed at the position
It consists of and.

The control circuit 35 for controlling the electric motor 15, the both-wing fans 22, the heater 24, etc. is provided with a general one-chip microcomputer 36 as shown in FIG. 4, and the microcomputer 36 is a central processing unit. (C
PU), read only memory (ROM) random access memory (RAM), input / output device (I / O), and timer device 36a. The input terminal of the microcomputer 36 has a key input section 37 including a drying start switch as the operation starting means 2, a door switch 38 for detecting opening / closing of the inlet lid 11 and the upper lid 13, and a material to be dried. A dry end sensor 39 or the like for detecting the fact that the above is done is connected. In addition, the output terminal of the microcomputer is a buzzer 40 for notifying the end of drying.
In addition to the display unit 41 that displays various information, the electric motor 15 meets the third triac 44 through the first bidirectional thyristor (hereinafter, referred to as a triac) 42 and the second triac 43, and the heater. 24 and the both-wing fan 22 are connected. In the figure, 45 is a power switch,
46 is a commercial AC power supply.

Then, the normal rotation means 3, the delay means 4 and the reverse rotation means 5
Is constituted by the microcomputer 36. In addition, the first temperature detector 52 and the second temperature detector 53
Is connected to the control circuit 35 via determination circuits 54 and 55 that relatively determine the temperatures detected by the first and second temperature detectors 52 and 53.

The operation of the above configuration will be described with reference to FIG.

First, when the drying start switch 2 is turned on, an operation start signal Y2 is generated, and the normal rotation means 3 which has received this signal outputs the normal rotation signal Y2.
3 is generated, the first triac 42 and the third triac 44 are brought into conduction, and the electric motor 15 and the heater 24
To the heater 24 as the rotary drum 1 rotates.
Heats up. At this time, the both-wing fan 22 also starts to rotate at the same time (S11).

By the way, if this state is continued, the first temperature detector 52
As shown in FIG. 5, the temperature detected by the second temperature detector 53 monotonously increases until it reaches a certain value (section A in the figure), and then the drying of the material to be dried ends. It keeps a constant value up to (section B) and rises again when the drying is completed (section C).

Therefore, in the present embodiment, when it is detected that the temperature change has entered the section B where the temperature change is flat, the delay unit 4 operates and the reversing unit 5 operates.
To intermittently invert the rotary drum 1. Therefore, it is possible to prevent the time until the inside of the rotary drum 1 reaches a certain temperature from becoming long, and it is possible to shorten the time until the end of drying.

Further, its operation will be described in detail. The temperature values detected by the first and second temperature detectors 53 are relatively judged by the judgment circuits 54 and 55. Then, the delay unit 4 measures the temperature change for a certain time tn from the time when the set certain temperature To is reached, and if the temperature is stable between the certain temperature To and Th, the temperature change is flat. It is determined that the section B has been entered, and the reverse rotation signal Y4 is generated (S13).

In response to this, the reversing means 5 turns off the first triac 42 and the third triac 44, and stops energization of the electric motor 15 and the heater 24 from time t11 to time t12 as shown in FIG. 6 (S14). ). After that, the second triac 43 is turned on, and the inversion drive of the electric motor 15 is performed from time t12 to time t13 (S15, S
16).

At time t13, the delay means 4 releases the reverse rotation signal Y4, and the normal rotation means 3 receiving this releases the second reverse triac 43.
And the third triac 44 is turned off, and the electric motor 1
5 and heater 24 are energized from time t13 to time t1.
After a short stop until 4 (S17), the normal rotation signal Y3 is generated, the first triac 42 and the third triac 44 are turned on, the electric motor 15 and the heater 24 are driven, and the normal normal rotation drying operation is performed. Perform (S18). Then, at time t15 without the completion of drying being detected (S19), the reverse operation is repeated (S20).

Then, when the material to be dried in the rotary drum 1 is dried and the temperatures detected by the first temperature detector 52 and the second temperature detector 53 both become equal to or higher than the constant temperature Th, the intermittent operation of the reverse operation is not performed. , Only forward rotation. Also, as shown by the broken line D and the broken line E in FIG.
When only the temperature of the first temperature detector 52 rises, it is determined that the material to be dried has become a dumpling, and even if the time t15 at which the reverse rotation operation is performed again has not been reached, the reverse rotation is given priority over the original reverse rotation operation. Take action.

By the way, according to the conventional drum type dryer, since the rotary drum is constantly rotating and the clothes as the material to be dried are always rubbed, the cloth is damaged, and it can be used for drying expensive clothes and the like. Can not. Further, noise and vibration are generated due to the driving of the rotary drum, which is a problem especially when performing a dry operation at night. There is also a hanging type dryer as shown in FIGS. 12 (a) and 12 (b), but there is a problem that dry spots, wrinkles, etc. occur because there is no movement of the material to be dried. . In FIGS. 12 (a) and 12 (b), reference numeral 61 denotes a dried object storage chamber,
62 is a blower fan, 63 is an exhaust fan, 64 is a heater,
Reference numeral 65 is a hanger, and 66 is a shelf for placing a material to be dried.

Therefore, hereinafter, a controller of a dryer is proposed, which can prevent shrinkage, damage, wrinkles, etc. of clothes as an object to be dried, can expand the kinds of objects to be dried that can be dried, and can achieve quietness at the same time. .

Hereinafter, the controller of this dryer will be described with reference to FIGS. 7 to 11. FIG. 7 is a functional block diagram of a dryer control device showing a second embodiment of the present invention, FIG. 8 is the same flowchart, FIG. 9 is the same vertical sectional view of the dryer, and FIG. 10 is the same electric circuit diagram. , FIG. 11 is a diagram showing the relationship between the time from the start of operation and the temperature.

Then, as shown in the figure, the controller of the dryer according to the present invention is
In a dryer having a rotary drum 1 for containing a material to be dried and a drying device 8 for drying the material to be dried in the rotary drum 1, an operation start means 2 for generating an operation start signal Y2.
And a drying device driving device 71 that generates a driving signal Y71 for the drying device 8 when the driving start means 2 generates a driving start signal Y2, and the driving start means 2 causes the driving start signal Y2.
Intermittent driving means 72 for intermittently outputting the drive signal Y72 of the rotary drum 1 (the stop time is longer than the rotation time) and a temperature detector for measuring the temperature of the air in the rotary drum 1. 51, and an end determining means 73 for generating an operation end signal Y73 based on the detection result of the temperature detector 51 during the driving of the rotary drum 1.

In the dryer according to the present invention, as shown in FIG. 9, the non-drying substance inlet 10 is formed on the front surface of the dryer main body 6, and the drum driving motor 74 and the both-wing fan driving motor 75 are separately provided. A clutch device or the like may be provided on the output shaft so that the drum drive motor 74 and the double-blade fan drive motor 75 can be combined into a single motor.

In addition, the temperature detector 5 is provided near the exhaust port 21 of the rotary drum 1.
1 is arranged, and the temperature detector 51, as shown in FIG.
It is connected to the input terminal of the microcomputer 36 via the determination circuit 76. Also, the microcomputer 3
The drum drive motor 74 is connected to the output terminal of 6 via the fourth triac 77, the double-blade fan drive motor 75 is connected via the fifth triac 78, and the heater 24 is connected via the sixth triac 79. .

Other configurations are the same as those in the first embodiment, and the same functional parts are designated by the same reference numerals.

The operation of the above configuration will be described.

First, when the user operates the drying start switch 2, an operation start signal Y2 is generated, the drying device driving means 71 operates, and the drying device 8 is driven (S21). That is, the fifth triac 78 and the sixth triac 79 are turned on to energize the both-wing fan 22 and the heater 24,
At the same time as rotating the double-blade fan 22, the heater 24 is caused to generate heat. The rotary drum 1 is stationary at this point.

Then, when the temperature detected by the temperature detector 51 is judged by the judgment circuit 76 (S22) and reaches the constant temperature To, the drum intermittent driving means 72 generates the drum driving signal Y72 and turns on the fourth triac 77. By doing so, the rotary drum 1 is rotationally driven (S23). The duration of this rotation drive is set to a constant time t21 determined by the timer device 36a (S24), and after the constant time t21, the drum drive signal Y72 generated by the intermittent drum driving means 72 is released, the fourth triac 77 is turned off, and the rotation is continued. Drum 1
Stops. Even while the rotary drum 1 is being driven, the drying device driving means 71 is always driving the drying device 8, and the both blade fans 22 and the heater 24 are being driven.

Then, from the time when the rotary drum 1 is stopped, the timer device 36
When the constant time t22 (t21 <t22) determined by a has elapsed (S26), the process returns to step S23, and the rotary drum 1 is rotationally driven again for the constant time t21. This operation is periodically repeated while the temperature detected by the temperature detector 51 is between To and Th, that is, in the region of the drum intermittent drive time tn shown in FIG.

When the temperature detected by the temperature detector 51 does not drop below a certain constant temperature th (S27,
S28), the end determining means 73 generates the operation end signal Y73, and the drying device driving means 71 receiving this signal stops the driving of the drying device 8 (S30), and the intermittent drum driving device 72.
Stops the generation of the drum drive signal Y72,
The driving ends.

It should be noted that the present invention is not limited to the above embodiment, and many modifications and changes are naturally made to the above embodiment within the scope of the present invention.

<Effects of the Invention> As is apparent from the above description, according to the present invention, the material to be dried such as clothes is housed in the rotary drum, and hot air is blown into the rotary drum while rotating the rotary drum, whereby In a dryer for drying a dried product, an operation start means for generating an operation start signal, a normal rotation means for generating a normal rotation signal of the rotating drum when the operation start signal generates an operation start signal, and the operation start means Temperature detection means for detecting a temperature change in the rotary drum after the generation of the operation start signal by the temperature detection means, and for a fixed time from the time when the temperature in the rotary drum detected by the temperature detection means reaches a set certain temperature. A temperature determining means for detecting the temperature and determining that the temperature in the rotating drum has reached a constant temperature by entering a flat section in which the temperature is stable during a certain constant temperature; and the temperature determining means. There is provided a delay unit that intermittently generates a reverse rotation signal of the rotary drum after the temperature in the rotary drum reaches a constant temperature according to the determination, and a reverse unit that reverses the rotation drum based on the reverse signal generated by the delay unit. Since the reverse signal of the rotating drum is not generated until the temperature inside the rotating drum reaches a certain temperature by the temperature detecting means and the temperature judging means, the reverse operation is performed at the stage of raising the temperature of the non-dried matter at the initial stage of the operation It is possible to prevent a decrease in the temperature rise rate during that time and to shorten the time until the end of drying.
Further, since the delay signal for performing the reverse rotation operation is generated according to the temperature detection and temperature determination states of the temperature detection means and the temperature determination means for detecting the temperature in the rotary drum, the amount of non-dry matter in the rotary drum may be changed. Even if there are variations, the timing of the reverse operation can be set with certainty, and the optimum drying operation without loss can be performed. In addition, since the reverse rotation signal is intermittently generated after the temperature inside the rotary drum reaches a certain temperature, it is possible to prevent the non-dry matter from being entangled.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a controller for a dryer showing a first embodiment of the present invention, FIG. 2 is the same flowchart, and FIG.
The same figure shows a longitudinal section of the dryer, FIG. 4 also shows an electric circuit diagram, FIG. 5 shows a diagram showing the relationship between time and temperature from the start of operation, and FIG. 6 shows time and rotation from the start of operation. FIG. 7 is a diagram showing the relationship with the rotating direction of the drum, FIG.
Fig. 8 is a functional block diagram of the controller of the dryer of the embodiment of Fig. 8, Fig. 8 is the same flowchart, Fig. 9 is the same vertical sectional view of the dryer, Fig. 10 is the same electric circuit diagram, and Fig. 11 is the same from the start Diagram showing the relationship between time and temperature in
Figure (a) is a vertical sectional view showing a conventional hanging dryer,
FIG. (B) is also a vertical side view. 1: rotating drum, 2: operation starting means, 3: forward rotation means,
4: delaying means, 5: reversing means, 6: dryer main body, 7: drum driving device, 8: drying device, 15: electric motor, 22: both blade fan, 23: circulation duct, 24: heater, Y2: operation start signal , Y3: forward rotation signal, Y4: reverse rotation signal.

Claims (1)

[Scope of utility model registration request] 1. A drier for drying an article to be dried by containing articles to be dried such as clothes in a rotating drum and blowing hot air into the rotating drum while rotating the rotating drum. Generating operation start means, normal rotation means for generating a normal rotation signal of the rotating drum when the operation starting means generates an operation start signal, and temperature change in the rotating drum after the operation start signal is generated by the operation starting means Between the temperature detecting means for detecting the temperature and the temperature for a certain time from the time when the temperature in the rotating drum detected by the temperature detecting means reaches a certain certain temperature. Temperature determining means for determining that the temperature in the rotating drum has reached a constant temperature by entering a stable flat section at
Delay means for intermittently generating a reverse rotation signal of the rotary drum after the temperature inside the rotary drum reaches a constant temperature as judged by the temperature judgment means, and reverse rotation of the rotary drum based on the reverse rotation signal generated by the delay means. A controller for a dryer, which is provided with a reversing means.