JPH104934A - Dehumidifying system for production of dried laver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clehummdifying system for production of dried laver able to solve such a traditional problem that in laver drying work for laver production in cold seasons from autumn to early spring, cold outdoor air enters a laver drying room in place of the air exhausted forcibly from the lever drying room and reduces the room temperature in the drying room and tarnishes surfaces of the dried laver, thus deteriorating quality of the dried laver. SOLUTION: This dehumidifying system for production of dried laver which conveys raw lave W to be dried with a conveyor 1 into a drying room 2 installed in a dried-laver production line and dries the laver there comprises a dehumidifier unit 3 that supplies dry air A into the drying room 2, and a fan 4 that introduces the dry air from the dehumidifier unit 3 into the drying room 2 and also exhausts humid air to the outside of the drying room 2, thereby maintaining the temperature and humidity in the drying room 2 at a predetermined level to make the drying work for the laver W sufficiently performable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidification system for dry laver production for drying laver conveyed by a conveyor in a dry laver production line.

[0002]

2. Description of the Related Art As a conventional dehumidification system for drying laver in a dry laver production line, as shown in FIG.
The warm air (4) heated by the boiler 101 in the drying room 100
(0 ° C. to 50 ° C.) 102 is supplied by the ceiling fan 103, and the hot air 102 removes moisture from the laver W that is carried into the drying chamber 100 by the conveyor 104 to perform a drying operation, and the resulting moist air 105 is generated. From the skylight or the like to the outside of the drying chamber 100 or the ceiling fan 1
At 03, forced exhaust is performed outside the drying chamber 100.

[0003] Further, as shown in FIG.
The warm air 102 warmed in the above is circulated by a fan 106, and the hot air 102 performs a drying operation by removing moisture from the laver W that is carried into the drying chamber 100 by a conveyor 104. There is also known a dehumidification system in which when the humidity increases, the moist air 105 is naturally exhausted from the skylight or the like to the outside of the drying chamber 100, or forcedly exhausted to the outside of the drying chamber 100 by a ceiling fan.

[0004] In the drying operation of the laver W produced from autumn to early spring, since the ceiling fan 103 forcibly exhausts the outside of the drying chamber 100, cold and dry outside air enters through a gap or the like in the drying chamber 100. , Drying room 100
The temperature and humidity inside are reduced, and the laver W is dried by repeating this.

[0005]

The season when the most expensive and high-quality laver is harvested is autumn, but the humidity of the outside air increases on rainy days and the like. Therefore, in the related art, when the humidity of the outside air increases, the speed of the conveyor 104 is reduced to prolong the time during which the laver W stays in the drying chamber 100, or the temperature of the hot air 102 is increased by the boiler 101. However, since the drying operation is performed, there is a problem in that the productivity is lowered and the surface quality of the laver W becomes cloudy and the quality is lowered.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to maintain the relative humidity in a drying room at about 30% to thereby reduce the seaweed. An object of the present invention is to provide a dehumidification system for producing dried seaweed, which promotes and stabilizes drying, prevents clouding of products, and improves quality.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a dehumidification system for dry laver production in which laver to be dried is carried into a drying room provided in a dry laver production line and dried. A dehumidifier for supplying to the drying chamber, and a fan for guiding dry air from the dehumidifier to the drying chamber and exhausting the humid air, maintaining the temperature and humidity in the drying chamber at predetermined values, and drying the laver. Work.

In the dehumidifying device, a processing zone and a regeneration zone are defined, and a dehumidification rotor is disposed so as to straddle both of the zones. It is possible to adopt one having a structure that allows moisture adsorbed on the dehumidifying rotor to be released.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic explanatory diagram of a dehumidifying system for producing dried laver according to the present invention, and FIG. 2 is an explanatory diagram of a dehumidifying device.

As shown in FIG. 1, the dehumidification system for producing dried laver is provided in a drying laver production line, and includes a drying chamber 2 through which the laver W conveyed from the previous process by the conveyor 1 passes for a predetermined time, and a drying chamber. A dehumidifier 3 installed in the drying chamber 2 for supplying dry air controlled at a predetermined temperature and humidity to the drying chamber 2;
The drying chamber 2 includes a fan 4 provided at an upper portion such as a ceiling. Note that the dehumidifying device 3 does not necessarily need to be installed in the drying chamber 2, as long as desired drying air can be supplied to the drying chamber 2.

The drying chamber 2 is formed by a floor 5, a wall 6, and a ceiling 7. Then, the conveyor 1 is installed from the entrance of the drying chamber 2 provided on one wall 6 to the exit provided on the other wall 6 opposed thereto, and the laver W which is placed and conveyed on the conveyor 1 from the previous process. Is dried when passing through the drying chamber 2, and is conveyed to a subsequent process.

The dehumidifier 3 is installed on the floor 5 of the drying room 2. As shown in FIG. 2, the dehumidifying device 3 is divided into a processing zone Z1 and a regeneration zone Z2 by a partition wall 8, and the first dehumidification rotor 9 and the second dehumidification zone extend over the processing zone Z1 and the regeneration zone Z2. A rotor 10 is arranged. In addition, the dehumidifying device may be constituted only by the first dehumidifying rotor 9, and two or three such dehumidifying devices may be provided.

The first and second dehumidifying rotors 9 and 10 are slowly rotated around their axes by a motor, and have a honeycomb structure which allows air to flow in the axial direction. Fine holes capable of adsorbing water molecules in the air are densely formed on the surface of the hole.

The air intake 11 of the processing zone Z1
Is mounted with a filter 12. The air intake 11 may be provided in the drying chamber 2 or may be provided in the drying chamber 2.
It may be provided outside. The dry air outlet 13 is provided in the drying chamber 2.

On the other hand, the air inlet 15 of the regeneration zone Z2
Is provided with a heater 16, and a filter 17 is provided between the heater 16 and the second dehumidifying rotor 10. Furthermore,
A heater 18 is disposed between the second dehumidification rotor 10 and the first dehumidification rotor 9 in the regeneration zone Z2. And the air intake 15 may be provided in the drying chamber 2 or may be provided outside the drying chamber 2. The air outlet 19 of the regeneration zone Z2 is provided outside the drying chamber 2.

A fan 4 provided at an upper portion of the drying chamber 2 such as a ceiling rotates at a low speed so as to discharge the moist air by the drying operation to the outside of the drying chamber 2 by an amount supplied from the drying air outlet 13. I do.

In the above, the air A1 flowing from the air inlet 11 of the processing zone Z1 comes into contact with the surface of the first dehumidifying rotor 9 after passing through the filter 12, so that the moisture in the air is reduced to the minute surface of the rotor. Adsorbed in the recess,
Moisture is removed.

The dried air A2 from which the moisture has been removed further passes through the second dehumidifying rotor 10, whereby the remaining moisture in the dried air A2 is adsorbed by the fine concave portions on the rotor surface, and the moisture is removed. Is done.

Next, the dry air is supplied from the dry air outlet 13 into the drying chamber 2 as warm dry air A3. Then, the seaweed W conveyed from the previous step by the conveyor 1 is dried by passing through the drying chamber 2 to which the warm drying air A3 is supplied for a predetermined time.

Part of the air that has received moisture from the laver W and has increased in humidity enters the upstream side of the first dehumidification rotor 9 again through the air intake port 11 and again enters the first dehumidification rotor 9.
While passing through the inside, moisture is removed, and further passes through the second dehumidification rotor 10 to become warm and dry air A3 and blown into the drying chamber 2. Further, a part of the humid air is discharged out of the drying chamber 2 by the fan 4.

On the other hand, the first dehumidifying rotor 9 is rotating slowly, and the portion of the processing zone Z1 that has absorbed moisture moves to the regeneration zone Z2 with the passage of time.
In the regeneration zone Z2, the high-temperature air heated by the heater 18 is sent to the first dehumidification rotor 9, and the water adsorbed on the surface is evaporated by heat while passing through the first dehumidification rotor 9. As a result, the rotor zone in which the surface does not adsorb moisture enters the processing zone Z1.

The second dehumidifying rotor 10 is also slowly rotating, like the first dehumidifying rotor 9, and the portion of the processing zone Z1 that has absorbed moisture moves to the regeneration zone Z2 with the passage of time. In the regeneration zone Z2, the high-temperature air heated by the heater 16 is sent to the second dehumidification rotor 10, and the water adsorbed on the surface is evaporated by heat while passing through the second dehumidification rotor 10. As a result, the rotor zone in which the surface does not adsorb moisture enters the processing zone Z1.

Then, from the air outlet 19, a high temperature
The high humidity air B2 is discharged out of the drying chamber 2. Note that B1
Is the outside air entering the regeneration zone Z2 from the air intake 15 or the circulating air in the drying chamber 2.

By repeating the above operation, dry air A3 having a relative humidity of 10% or less and a temperature of 50 ° C. or less is constantly circulated in the drying chamber 2.

Also, in the drying operation of the laver W, the leaf temperature of the laver W is an important factor in quality, and
It is preferable to keep the temperature around 5 ° C. However, in the related art, it was not easy to lower the humidity without raising the temperature of the air, and the drying time was increased, resulting in poor workability.

In the present invention, hot air drying by a heater is not mainly performed. Instead, the dehumidifier 3 puts dry air A3 having a relative humidity of 10% or less and a temperature of 50 ° C. or less in the drying chamber 2.
Therefore, the temperature in the drying chamber 2 can be maintained at about 36 ° C., the humidity can be maintained at about 40%, and the leaf temperature of the laver W can be maintained at about 25 ° C.

Further, the temperature of the dry air supplied from the dehumidifying device 3 is 30 to 35 ° C. due to heat (adhesion heat) generated when moisture is removed from the air by the dehumidifying device 3.
Even when the outside air temperature is low, the heating frequency of the air by a heating means such as a boiler can be reduced, which contributes to energy saving.

[0028]

According to the present invention as described above,
Since the hot air drying with a heater was not the main method, the seaweed was dried by using a dehumidifier and supplying dry air with a relative humidity of 5% or less and a temperature of 50 ° C or less to a drying chamber. A product excellent in aroma, luster and stiffness can be obtained without destroying the umami component of the laver. In addition, since the laver can be produced while maintaining the temperature and humidity in the drying room at predetermined values without being affected by the temperature and humidity of the outside air, the quality of the product can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a dehumidification system for producing dried laver according to the present invention.

FIG. 2 is an explanatory view of a dehumidifier.

FIG. 3 is an explanatory view of a conventional dehumidification system for producing dried laver.

FIG. 4 is an explanatory diagram of a conventional dehumidification system for producing dried seaweed.

[Description of Signs] 1 ... Conveyor, 2 ... Drying chamber, 3 ... Dehumidifying device, 4 ... Fan, 8 ... Partition wall, 9 ... First dehumidifying rotor, 10 ... Second dehumidifying rotor, 11 ... Air intake port, 12, 17 ... filters, 1
3: Dry air outlet, 15: Air intake, 16, 1
8: heater, 19: air outlet, Z1: processing zone,
Z2: regeneration zone, W: nori.

Claims (2)

[Claims] 1. A dehumidifying system for producing dried laver for loading and drying a dried laver to be dried in a drying chamber provided in a dried laver production line, comprising: a dehumidifier for supplying dry air to the drying chamber; A fan for guiding dry air into the drying chamber and discharging the humid air out of the drying chamber, maintaining the temperature and humidity in the drying chamber at predetermined values, and performing a drying operation of the nori, Dehumidification system. 2. The dehumidification system for dry laver production according to claim 1, wherein the dehumidification device is divided into a treatment zone and a regeneration zone, and a dehumidification rotor is disposed across both the zones. A dehumidification system for dry laver production, wherein moisture in the air is adsorbed by a dehumidification rotor, and moisture adsorbed on the dehumidification rotor is released in a regeneration zone.