JPS6392394A - Dryer - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a dryer that predicts and displays the drying operation time at the beginning of the drying operation.

(Prior art) As a conventional example of this type of dryer, for example,
There is one described in Publication No. 48198. In this device, the amount of material to be dried is determined by detecting the degree of change in exhaust gas temperature at the beginning of drying operation using a temperature sensor such as a thermistor, and based on the results, the drying operation time is predicted and displayed on the display. At the same time, the displayed value is sequentially subtracted and displayed in units of one minute, and this displayed value is used as a guide for the remaining time required for the drying operation. Then, at the final stage of the drying operation, when the drying rate of the material to be dried reaches a predetermined value (95%), a timer-controlled operation is executed to end the drying operation, and this time-controlled operation period Inside, the control operation time is displayed on the display, and the displayed value is also subtracted sequentially in units of one minute.

(Problems to be Solved by the Invention) By the way, the value displayed on the display before shifting to time-controlled operation is only a guideline for the remaining time required for drying operation.
Although it does not display the exact remaining time required, after the transition to time control operation, the timer will display the accurate remaining time required. However, in the conventional system described in -1-, the time median of the display value on the display is exactly the same as before, 111th place (about 1 minute tit), even though the display value has shifted to time control operation. Just by looking at the display on the device, it was not possible to distinguish whether the system had shifted to time-controlled operation or not, and therefore whether the displayed value was the 1 low time for force or the exact 11.4 period.

Therefore, in reality, the displayed value is L before starting time control operation.
Even though the time is 1 low, it is easy for users to misunderstand this time as the correct time, which can easily lead to the misunderstanding that the displayed value is incorrect.

The present invention aims to solve these problems,
Therefore, the purpose is to provide a dryer in which it is possible to easily distinguish whether the displayed value is the approximate time or the accurate time, and to provide the user with information regarding the remaining time required for drying operation without misunderstanding. be.

"Structure of the Invention" (Means for Solving Point Ij!l a) The dryer of the present invention has a drying operation time of 1"-1t-II at the beginning of drying operation.
The displayed value is sequentially subtracted and displayed by a predetermined time 'l'-71'/ as the drying operation progresses, and after shifting to the time control operation, the control operation is The time is displayed, and the displayed value is sequentially subtracted and displayed in units of time smaller than the predetermined time (11-th place) as the drying operation progresses.

(Function) With the transition to time-controlled operation, the displayed value is
Since the value becomes small, it is easy to distinguish whether the displayed value is the 11th low time or the IF accurate time depending on the magnitude of the time 11j.

(Example) Hereinafter, one example of the present invention will be described based on the drawings. First, in Figure 2 showing the overall configuration, 1 is the outer box of the dryer,
Inside it is a rotating drum (not shown) that constitutes a drying chamber.
is rotatably provided. Reference numeral 2 denotes a door for opening and closing the entrance/exit of the dried material 1 on the front surface of the outer box 1, and 3 a vertically long operation panel disposed on the right side of the door 2 on the front surface of the outer box 1.

In FIG. 2 showing this operation panel 3, 4 is a power switch, 5 is a start/stop switch for starting or stopping the drying operation, and 6 is a course changeover switch for changing the operation course. The driving course is the ``Standard'' course, where dry charcoal is standard,
The "Iron" course is suitable for ironing when the product is half-dry, and the "Kurairi" course is for drying the product. Reference numeral 7 indicates three light emitting elements for displaying the driving course, and reference numeral 8 indicates a heater changeover switch, which switches the energization between a strong heater 9 (see Fig. 1) and a weak heater 10, which have different amounts of heat generated. It is something. 11 is the two light emitting elements that display the heater's 1 strong and weak j, and 12 is the display that displays the predicted value of the drying operation time and the remaining time; for example, 7.
It consists of a three-digit digital display in which three segment-shaped light emitting diode 1' display elements are arranged in horizontal rows, thereby making it possible to display three-digit time in units of one minute.

On the other hand, the configuration related to the control of drying operation will be explained based on FIG. Reference numeral 13 denotes a detection electrode, which is disposed at a location in the rotating tram where it can come into contact with the object to be dried, and its output signal is input to both the contact degree detection circuit 14 and the drying rate detection circuit 15. In this case, the contact degree detection circuit 14
For example, each time the object to be dried comes into contact with the detection electrode 13, a pulse signal is manually inputted to the microcomputer 16, and the microcomputer 16 increases the number of pulse signals within a certain period of time by one, thereby causing the detection electrode 13 and the object to be dried to be connected to each other. The frequency of contact and therefore his drying ability is determined.

Further, the drying rate detection circuit 15 inputs a voltage signal corresponding to the electrical resistance value of the object to be dried that is in contact with the detection electrode 13 and thus the drying rate to the microcomputer 16, thereby determining the drying rate of the object to be dried. During the drying operation, the microcomputer 16 switches the operation to a time-controlled operation using a timer when the drying rate of the material to be dried reaches a predetermined value. After running for a predetermined period of time depending on the article, the motor 17 is stopped to end the drying operation. Note that 18 is a buzzer for notification.

Therefore, during drying operation 11, between 1'' and 1''-i'flll f
Direction (hereinafter referred to as "p measurement time") is the amount of dried material detected via the detection electrode 13, that is, the number N of pulse signals manually input from the contact degree detection circuit 14 to the microcomputer 16 within a certain period of time in this embodiment. Based on this, it is determined as follows depending on the type of driving course and the strength of the heaters 9 and 10. For example, if the "Standard" course is selected and the high heater 9
4, the relationship between the number N of pulse signals (contact frequency) and the predicted time is set in stages as shown by the solid line in FIG. In this case, the number of pulse signals N
If an attempt is made to calculate the predicted time by formulating the relationship between and the predicted time as a mathematical formula, the mathematical formula will become a curved formula shown by the dotted line in FIG. 4, which is not a simple formula. Moreover, considering that even if the predicted time is calculated in detail from such a mathematical formula, the prediction accuracy is not very high, it can be concluded that the calculated value in units of less than 10 minutes does not have a very important meaning. It can be understood. Therefore, in this embodiment, the time unit of the prediction time is set to 100 minutes in consideration of prediction accuracy, and each of the prediction times when the prediction time is 30 minutes, 40 minutes, 50 minutes, ..., 120 minutes. The range of the number N of pulse signals is determined in advance, and these data are stored in the microcomputer 16. Then, the number N of pulse signals detected at the beginning of the drying operation
Based on this, the predicted time T is determined according to the flowchart in FIG. Specifically, when N≦200, T=30 minutes, 2
00<N≦600, T-40 minutes, 600<N≦110
0, T=50 minutes,..., N>7800, T
=120 minutes. The predicted time determined in this way is displayed on the display 12. This displayed value is sequentially subtracted at 10 minutes t114 as the drying operation progresses, and the remaining time required for the drying operation (hereinafter referred to as "remaining operating time")
1” low. After shifting to the time-controlled operation using the above-mentioned timer, the controlled operation time is displayed on the display 12, and the displayed value is changed to a time unit smaller than the above-mentioned time unit, for example, 1 as the drying operation progresses.
Accurately display remaining driving time by sequentially subtracting minute by minute. Then, when this display value reaches 0 minutes, the motor 17
is stopped and the drying operation ends.

In addition, even in the case of driving courses other than the "standard" course, the estimated time and remaining driving time are displayed in 10 minutes #11 in the same way as described in -1-, and the time is shifted to time-controlled driving. After that, the value displayed on the display 12 is sequentially subtracted in units of one minute.

According to the embodiment described above, the time unit of the displayed value on the display 12 decreases from 100 minutes to 1 minute as the operation shifts to time-controlled operation, so the size of the time unit reduces the time unit. It is possible to easily distinguish whether the displayed value is a guide time or an accurate time, and it is possible to prevent a user from misunderstanding a 1" approximate time as an accurate time. In other words, if it is displayed in units of 100 minutes, it is easy to see that the time has not yet shifted to time-controlled operation and is a guideline time, and if it is displayed in units of 1 minute + 1j, it is easy to understand that the time has not yet shifted to time-controlled operation. It is easy to see that the drying operation is at the correct time, and based on this displayed value, the end time of the drying operation can be accurately determined.
Therefore, information regarding the remaining operating time can be given to the user without misunderstanding based on the value displayed on the display 12.

In the above embodiment, the display 12 is constructed from a digital display, but the present invention is not limited to this. For example, a clock scale may be provided on the operation panel, and a large number of clock scales may be provided corresponding to the clock scale. A light emitting element may be provided and the time may be displayed by selectively lighting the light emitting element. In addition, in the embodiment mentioned above, the time unit of the display value on the display 12 before shifting to time-controlled operation was set to 100 minutes, but it may be changed to 200 minutes or 5 minutes depending on the level of prediction accuracy. Also good. Similarly, the time unit of the displayed value after transitioning to time-controlled operation is not limited to 1 minute, but may be in units of 5 minutes, 10 seconds, etc. as long as it is smaller than the time unit of the previous displayed value. good.

Furthermore, in the above embodiment, the predicted time is determined based on the frequency of contact between the detection electrode 13 and the amount of material to be dried. The means for doing so are not specified in -1-, such as a configuration in which the predicted time is determined based on the detected value.

[Effects of the Invention] As is clear from the explanation in -1- below, the display value of the present invention becomes intermediate or small with the shift to time-controlled operation. Power - 1
This has an excellent effect in that it is possible to easily distinguish whether the time is low or accurate, and information regarding the remaining time required for drying operation can be given to the user without misunderstanding.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. FIG. 1 is a block diagram, FIG. 2 is an overall perspective view, FIG. 3 is a front view of the operation panel, and FIG. 4 shows the number of pulse signals (contact frequency). ) and the predicted time, and FIG. 5 is a diagram that does not show flowchart 1. In the drawing, 12 is a display, 13 is a detection electrode, and 16 is a microcomputer.

Claims (1)

[Claims] 1. After the drying rate of the material to be dried reaches a predetermined value, a timer-controlled operation is executed to end the drying operation, and the drying operation time is predicted and displayed at the beginning of the drying operation. The value is sequentially subtracted and displayed in predetermined time units as the drying operation progresses, and after shifting to the time control operation, the control operation time is displayed and the displayed value is used as the drying operation progresses. Accordingly, the dryer is characterized in that the display is performed by sequentially subtracting time units smaller than the predetermined time unit.