JPS6360986B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a humidity adjustment device for controlling the relative humidity in a seaweed drying chamber to a constant level.

[Conventional technology]

In the production of seaweed, seaweed is collected in a cage and dried in a seaweed drying room.

A conventional seaweed drying apparatus will be described with reference to FIG. 4. The conventional seaweed drying apparatus 10 has a partition wall 1 in a work building 11.
2 and 13 are provided to form a drying chamber 14 with an open top, and a heat source 15 and a fan 16 are installed on the sides of the drying chamber 14.
A hot air generation chamber 17 consisting of the following is provided, and hot air is guided from the hot air generation chamber 17 into the drying chamber 14 to dry the seaweed cut into a cage in the drying chamber 14.

On the other hand, there is a close relationship between the quality of the dried seaweed product and the humidity in the drying room. If the humidity is too high, the seaweed may not dry properly.

For this reason, various proposals have been made to control the humidity in the seaweed drying room.
As described in Japanese Patent No. 53196, it has been proposed to keep the humidity constant in a seaweed drying room by combining a humidity detector and an exhaust fan.

Additionally, as stated in Japanese Patent Publication No. 57-56872, if the humidity in the nori drying room exceeds a certain level or the temperature exceeds a certain level, the burner of the combustion furnace is turned off to stop the generation of heat. It has been proposed to prevent seaweed from overdrying.

[Problem that the invention seeks to solve]

However, depending on the drying conditions,
As stated in Publication No. 53196, there are cases where humidity cannot be adjusted by controlling the exhaust fan alone (especially when the humidity is low), and in such cases, it is necessary for a person to judge the situation and take appropriate measures. It was hot.

Furthermore, in the invention disclosed in Japanese Patent Publication No. 57-56872, the main purpose was to prevent overdrying of the seaweed drying room, so it was difficult to control the humidity in the seaweed drying room at a constant level. It was hot.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a humidity adjustment device for a seaweed drying room that measures the humidity and temperature inside the drying room and automatically controls the humidity to a constant level. shall be.

[Means for solving problems]

A humidity adjusting device for a seaweed drying room according to the present invention in accordance with the above object includes a humidity detector that detects the humidity inside the seaweed drying room, a temperature sensor that detects the temperature inside the seaweed drying room, and a humidity sensor that is arranged in the seaweed drying room. The output values of the installed exhaust fan, the heater that controls the temperature inside the seaweed drying chamber, the humidity detector and the temperature detector are input and compared with reference values, and the exhaust fan and the heater are adjusted. A humidity adjusting device for a seaweed drying room, comprising a controller for controlling the temperature of the seaweed drying room, the controller having a controller for confirming that the temperature of the seaweed drying room is within a certain range based on the output value of the temperature detector. After that, if the output value of the humidity detector is higher than the reference value, first drive the exhaust fan to discharge the moisture to the outside, and even if you drive the exhaust fan, the output value of the humidity detector will be higher than the standard value. If it is higher than the standard value, gradually increase the temperature of the heater to increase the temperature of the seaweed drying room and bring the output value of the humidity detector closer to the standard value, so that the output value of the humidity detector becomes the standard value. If the humidity is lower than the reference value, first stop the exhaust fan, and if the output value of the humidity detector is still lower than the standard value even after stopping the exhaust fan, gradually lower the temperature of the heater and return the nori drying room. A control means is provided for controlling the humidity in the seaweed drying chamber to a constant value by lowering the temperature of the seaweed drying chamber and bringing the output value of the humidity detector closer to a reference value.

Although the controller can be controlled by a normal relay sequence, it is preferable to use a microcomputer from the viewpoint of reliability and longevity.

In addition, below, when humidity is simply referred to, it refers to relative humidity.

[Effect]

Next, the operation of the control method of the controller constituting the humidity adjustment device for a seaweed drying room of the present invention will be explained.

First, as a result of detecting the humidity in the seaweed drying chamber with a humidity detector, if the humidity in the seaweed drying chamber is higher than a reference value, an exhaust fan is driven to exhaust the moisture in the seaweed drying chamber to lower the humidity. Then, after a certain period of time, the humidity inside the seaweed drying chamber is measured again using the humidity detector, and if the humidity is higher than the reference value, the heater is controlled to raise the temperature of the seaweed drying chamber by a predetermined temperature. Assuming that the absolute humidity in the seaweed drying room is constant, the relative humidity should decrease by repeating this operation.
The humidity in the seaweed drying room approaches the standard value.

Next, the humidity inside the nori drying chamber is measured using a humidity detector, and if the humidity inside the nori drying chamber is lower than the standard value, the exhaust fan is stopped if it is rotating, and the nori drying chamber is If the humidity is lower than the standard value, the heater is controlled to lower the temperature of the nori drying room by a predetermined temperature. By repeating this operation, the humidity in the seaweed drying room becomes constant.

Since this operation is performed by the control method of the controller, the relative humidity is automatically controlled to be constant.

〔Example〕

Next, an embodiment embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

FIG. 2 is a schematic diagram of the controller used in the humidity adjustment device for the seaweed drying room according to the above embodiment, and FIG. 3 is a diagram of the humidity adjustment device for the seaweed drying room according to the above embodiment It is a flowchart diagram of a humidity adjustment device.

As shown in FIG. 1, a humidity adjustment device 20 for a seaweed drying room according to an embodiment of the present invention includes a humidity control device 20 for a seaweed drying room 2.
Humidity detectors 22 and 23 that detect humidity within 1;
Temperature detectors 24 and 25 that detect the temperature inside the seaweed drying chamber 21, exhaust fans 26 and 27 disposed on the ceiling inside the seaweed drying chamber 21, and air temperature inside the seaweed drying chamber 21. burners 28 and 29, which are examples of heaters that control
It is composed of: These will be explained in detail below.

Side part 21a of the seaweed drying chamber 21 shown in FIG.
is equipped with a blower fan (not shown).
The burners 28, 2 connected to the burners 28, 29
Superheated pipes 31, 3 through which the hot air generated by 9 passes
2, the heat-exchanged air enters the drying chamber 21 from the lower part.

The outputs of the humidity detectors 22, 23 and temperature detectors 24, 25 are input to the controller 30,
Upon receiving the signal from the controller 30, the exhaust fans 26,2
7 and burners 28 and 29 are controlled.

In the above embodiment, the seaweed drying room 21 is divided into two as described above, and two sets of detectors, exhaust fans, etc. are provided, and the humidity is adjusted independently by the controller 30. Since these control means have the same configuration, only the controller on one side thereof will be explained below.

The controller on one side is composed of a microcomputer, and its configuration is as shown in Figure 2.
A central processing unit 31 that performs overall control is connected to a ROM 32 in which overall control commands are stored and a RAM 32 in which temporary storage is stored, thereby forming a control means.

An input interface 34 is connected to the central processing unit 31, and the input interface 34 includes a humidity detector 22, a temperature detector 24, etc.
are connected via AD converters 35 and 36, respectively.

Further, to the input interface 34, a voltage source 37a for setting an interval time is connected via an AD converter 37, and a setting device 38 for setting reference values for humidity and temperature is also connected. On the other hand, an output interface 39 is connected to the central processing unit 31, and
The output interface 39 includes a display 40;
Burner control section 4 that controls on/off of the burner
1 and an exhaust fan motor 42 are connected.

Next, the control means of the controller will be explained in detail based on the flowchart shown in FIG.

First, along with the start command, the output value w ₁ of the humidity detector 22 and the output value T ₁ of the temperature sensor 24 are read (step 43), and then the reference values for humidity and temperature are read.
Read and store w ₀ and T ₀ (step 44). This is then displayed in step 45 and the reference value temperature is
Compare T ₀ with the temperature T ₁ inside the seaweed drying chamber 21 (step 46), and if the value of (T ₀ - _{T 1} ) is negative, the temperature inside the seaweed drying chamber 21 is too high.
The burner control unit 41 is controlled to stop the burner (step 47).

Here, if the value of (T ₀ - _{T 1} ) is positive, the temperature inside the seaweed drying chamber 21 is too low.
If the burner is not lit, ignite it (step
48).

Through the above operations, the temperature inside the drying chamber is controlled to be close to the reference value.

Next, the output value w ₁ of the humidity detector 22 is compared with the humidity reference value w ₀ (step 49). And (w ₀
-w ₁ ) is positive, the seaweed drying room 21
Since the humidity inside is too low, exhaust fan 2
The motor 42 of No. 6 is stopped (step 50), and a short interval time is counted by the small timer 2 (step 51). Then, count at this point (step 51). When the small timer 2 completes counting, it is determined whether or not the small timer 2 has counted a predetermined number of times (step 52). If the small timer 2 has not counted up, the process returns to step 43 and repeats the above steps. However, if the value of (w ₀ - _{w 1} ) is positive even after repeating the above steps, the humidity in the seaweed drying chamber 21 is too low, and the small timer 2 has counted up a predetermined number of times. Check the set temperature of the burner
Lower w ₀ (standard value) by 1°C (step
53). The second burner lowers the temperature.
This is done by controlling the voltage source 37a connected to the AD converter 37 shown in the figure. This lowers the temperature inside the seaweed drying chamber 21, so if the absolute humidity is the same, the relative humidity will increase. By repeating the above steps, the humidity in the seaweed drying chamber 21 is controlled to be constant.

Next, if the value of (w ₀ -w ₁ ) is negative, ventilation is performed by rotating the motor 42 of the exhaust fan 26 (step 54) for a short interval time. When the count of this small timer 1 is completed,
It is determined whether or not the small timer 1 has counted a predetermined number of times (step 56). If it has not counted up, the process returns to step 43 and repeats the above steps. Therefore, if the value of (w ₀ −w ₁ ) is no longer negative as a result of this, the above steps are not repeated. However, even after repeating the above steps, the result is (w ₀ -w ₁ ), and after confirming that the small timer 1 has counted a predetermined number of times, the burner temperature is raised by 1° C. (step 57). As a result, the temperature inside the seaweed drying chamber 21 increases.

Therefore, by repeating the above steps,
If the absolute humidity is the same, the relative humidity will decrease, so the humidity in the seaweed drying chamber 21 will be kept constant.

Although not shown, there are harmful effects if the temperature in the seaweed drying chamber 21 rises or falls too much, so the set temperature of the seaweed drying chamber 21 has certain upper and lower limits.

〔Effect of the invention〕

Since the humidity adjustment device for a seaweed drying room according to the present invention is configured as described above, it is possible to automatically keep the humidity in the seaweed drying room constant over a wide range.

Since this control can be performed without the need for human labor, it has become extremely easy to adjust the humidity in the nori drying chamber.

Furthermore, since the humidity in the seaweed drying chamber can be reliably controlled, it is now possible to prevent the generation of defective seaweed due to insufficient drying.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a humidity adjustment device for a seaweed drying room according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a controller used in the humidity adjustment device for a seaweed drying room according to the above embodiment. FIG. 3 is a flowchart of the humidity adjustment device for the seaweed drying room according to the above embodiment;
The figure is a schematic explanatory diagram of a conventional seaweed drying apparatus. [Explanation of symbols], 20... Humidity adjustment device for seaweed drying room, 21... Seaweed drying room, 22, 23... Humidity detector, 24, 25... Temperature detector, 26, 2
7... Exhaust fan, 28, 29... Burner (heater), 30... Controller, 31, 32... Overheating pipe.

Claims (1)

[Scope of Claims] 1. A humidity detector for detecting the humidity in the seaweed drying chamber, a temperature detector for detecting the temperature in the seaweed drying chamber, an exhaust fan disposed in the seaweed drying chamber, and a humidity sensor for detecting the humidity in the seaweed drying chamber. A heater for controlling the temperature inside the drying chamber, and a controller for controlling the exhaust fan and the heater by inputting the output values of the humidity detector and the temperature detector and comparing them with a reference value. The humidity adjustment device for a seaweed drying room is configured such that the controller adjusts the output value of the humidity sensor after confirming that the temperature of the seaweed drying room is within a certain range based on the output value of the temperature sensor. If the humidity is higher than the standard value, first drive the exhaust fan to discharge the moisture to the outside, and even if the exhaust fan is driven, if the output value of the humidity detector is higher than the standard value, the heating will start. Gradually raise the temperature of the drying chamber to bring the output value of the humidity detector closer to the reference value, and if the output value of the humidity detector is lower than the reference value, first turn on the exhaust fan. If the output value of the humidity detector is still lower than the reference value even if the exhaust fan is stopped, the temperature of the heater is gradually lowered to lower the temperature of the nori drying room, and the humidity detector is 1. A humidity adjustment device for a seaweed drying room, comprising: a control means for controlling the humidity in the seaweed drying room to a constant value by bringing the output value of the humidity controller closer to a reference value. 2. The humidity adjustment device for a seaweed drying room according to claim 1, wherein the controller is controlled by a microcomputer.