JPS62197100A - Control of dehymidifying type dryer utilizing midnight power - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dryer that uses late-night electricity, and particularly to a method of controlling a dehumidifying dryer.

(Prior Art) Conventionally, there has been no dryer that uses electricity late at night, and dryers can be operated at any time using regular electricity.

In addition, dryers, especially dehumidifying dryers, remove moisture from the air by exchanging heat with outside air after contributing to drying, and then heat the dehumidified air again with a heater to raise its temperature and return it to the drying chamber. Since the structure is such that the drying air is repeatedly fed into the air and repeatedly contributes to the drying of the material to be dried, the dehumidification efficiency of the drying air is high when the outside temperature is low, and good results can be obtained in terms of drying performance.

(Problem to be solved by the invention) Dryers generally consume a large amount of power, and since such dryers had to be operated using regular electricity, which has high electricity costs, the electricity bill was high and a heavy burden, and drying It was also meant to reduce the amount of equipment used.

Also, if you operate a dehumidifying dryer during the day when the outside temperature is high,
The dehumidification efficiency of the drying air was poor, and this type of dryer was not very suitable for use.

(Means for Solving the Problems) The content of the present invention will be explained with reference to FIG. 1. Late-night power is supplied to the dryer 1 through a late-night power supply section 2. Then, the operation start control means 3 determines the drying start time based on the end time of the late-night power supply and the required drying time (for example, the drying operation time arbitrarily set by the user, the longest drying time predetermined by experiment, etc.). The operation of the dryer 1 is set to end before the end time of late-night power, and the operation of the dryer 1 is controlled to start when the drying start time comes.

(Function) When the start time of late-night power comes, the late-night power supply section 2 is turned on.
become a state. However, the dryer 1 does not operate immediately, but waits until the drying start time that is set based on the end time of the late-night power supply and the required drying time, and when the dryer 1 reaches the drying start time, the instruction from the operation start means 3 Start operation. At this time, it is generally early in the morning when the outside temperature is low, and the dryer 1 can be operated using low-cost late-night electricity with good drying performance.

(Embodiment) The embodiment of the present invention shown in FIGS. 2 to 4 will be described in detail below.

FIG. 2 is a schematic cross-sectional configuration diagram showing a dehumidifying dryer in an embodiment of the present invention. 4 is a dryer outer casing, 5 is a door for opening and closing the input port of the dryer outer casing 4, 6 is a rotating drum whose interior is a drying chamber 7, and has an intake section 8 on the front and an exhaust section 9 on the rear, 10 12 is a drying air circulation path that communicates between the intake section 8 and exhaust section 9 of the rotating drum 6 and includes a heater 11 in the vicinity of the intake section 8; 12 is a drying air flowing through the circulation path 10 and outside air; It is a double-blade fan that also serves as a heat exchanger and dehumidifies the drying air by blocking the air and exchanging heat between the two, and has a fan section 13 that circulates the drying air and a section that circulates the cooling air (outside air). It has a fan section 14. 15 is a dehumidified water outlet, and 16 is a motor that rotates the rotating drum 6 and the double-winged fan 12 via bells 17 and 18.

In the dehumidifying dryer having such a structure, the material to be dried 19 is loosened by the rotation of the rotary drum 6, and the drying air is sent to the drying chamber 7 and the exhaust section by the fan part 13 of the double-winged fan 12 as shown by the arrow. 9, the circulation path 10, and the air intake section 8 in this order, the material to be dried 19 is dried. That is,
The air for drying is heated by a heater 11 and the material to be dried 19 is heated.
Drying is carried out by repeatedly removing moisture from the air and dehumidifying it through heat exchange with the outside air.

Figure 3 is a block diagram showing the control system of the dryer.
0 is a program/fixed data memory (ROM), 21 is a temporary memory/memo IJ (RAM), 22 is a control section consisting of a microcomputer and an I10 section (input/output section), 23
is a timer, 24 is a normal power supply unit, 25 is a power switch, 26 is a key switch group, 27 is a display unit, 28 is a late-night power supply unit that supplies late-night power to the heater 11 and motor 16 during the late-night power hours ( For example, from 11pm to 7am
(until the time) is in the ON state.

The control will be explained below according to the flowchart of FIG.

First, after putting the material to be dried 19 into the rotating drum 6, the power switch 25 is turned ON and then a desired drying operation time T is set by key operation. Then, the control unit 22 determines the end time of late-night power (for example, 7 a.m.) and the set drying operation time T.
(for example, 80 minutes), the drying start time T1 is determined, and the time T1 is stored in the RAM 21. Then, at drying start time T (5:40 a.m. in the example), the control unit 22 turns on both the heater 11 and the motor 16.
The dryer will be operated using late-night electricity. At this time, the outside temperature is at its lowest during the day, so the drying air is efficiently cooled by the outside air, achieving high dehumidification efficiency, and the dryer can be operated with good drying performance. Then, when the set drying operation time T has elapsed from the start of operation, the operation of the dryer ends. That is, the operation of the dryer ends at the end time of the late-night power supply.

In the above embodiment, the end time of the dryer operation is made to coincide with the end time of the late-night power supply, but it is not necessary to make them coincide, and the dryer operation is controlled to end before the end time of the late-night power supply. In addition, for automatic control type dryers that automatically detect the degree of dryness of the material to be dried and end the operation, the maximum drying time is determined in advance through experiments, and the maximum drying time is determined in advance and the end of the midnight electricity is set to 0. The drying start time (fixed) may be determined based on the time. However, in this case, there will be variations in the time when the dryer operation ends, but in either case, the operation will end before the end time of the late-night power supply, and the intended purpose can be achieved.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings; for example, the structure of a dehumidifying dryer, etc.
It goes without saying that the invention may be modified and implemented as appropriate without departing from the spirit of the invention.

(Effects of the Invention) As described above, according to the present invention, the dryer can be operated using low-cost late-night electricity, the electricity bill is low and the burden is lightened, and the frequency of use is increased. Moreover, it can be used at favorable times, and is of practical benefit.

[Brief explanation of drawings]

Fig. 1 is a diagram for explaining the present invention in detail, Fig. 2 is a schematic cross-sectional configuration diagram showing a dehumidifying type dryer in an embodiment of the present invention, and Fig. 3 is a block diagram showing the control system of the dryer. , 4th
The figure is a flowchart of the same control. 1: Dryer, 2: Late-night power supply section, 3: Operation start control means. Agent Patent Attorney Takeshi Sugiyama (and 1 other person) Dedicated figure 1 figure 2 figure 3 figure

Claims (1)

[Claims] 1.Equipped with an operation start control means that sets a drying start time based on the end time of the late-night power supply and the required drying time and starts operating the dryer when the drying start time reaches the end time of the late-night power supply, and before the end time of the midnight power supply. A control method for a dehumidifying dryer that uses electricity late at night, which controls the dryer to end its operation.