WO2018016431A1

WO2018016431A1 - Water vapor flow control unit and drying device using same

Info

Publication number: WO2018016431A1
Application number: PCT/JP2017/025682
Authority: WO
Inventors: 田中　裕之; 良男荒井; 康芳荒井
Original assignee: 国立大学法人東京工業大学; 株式会社セルロンジャパン
Priority date: 2016-07-19
Filing date: 2017-07-14
Publication date: 2018-01-25
Also published as: CN109526209B; JP2018012048A; CN109526209A; JP6099179B1

Abstract

This water vapor flow control unit is provided with: a solid moisture permeable structure that contains a sheet having therein holes each of which has a diameter of 0.4 nm to 2 µm; and an airflow generator 2 that generates an airflow along one surface of the solid moisture permeable structure.

Description

Water vapor flow control unit and drying apparatus using the same

The present invention relates to a steam flow control unit and a drying apparatus using the same, for example, a drying apparatus for drying high-water-content biomass at a low temperature (35 ° C. to 60 ° C.).

In general, the drying apparatus for high water content biomass having a specific shape such as food organic waste and wood is a box type. There exist a vacuum system, a pressure reduction system, a heat pump system, and a hot-air system (refer: nonpatent literature 1) as a box type drier of this kind.

The vacuum system requires a vacuum pump, and the pressure reduction system requires a pressure reduction fan for pressure reduction, a circulation fan for circulation, and the heat pump system requires a heat pump, so the manufacturing cost and consumption of the drying apparatus Power is high.

On the other hand, the hot air system requires a heater and a blower fan, but the manufacturing cost is low. However, the hot air system is an air non-circulation system in which the hot air is sent from the outside to evaporate the moisture of the object and is exhausted to the outside, so the heat amount used for drying is about 25 to 40% of the input heat amount. The amount of heat is mainly discharged by the discharged hot air (see: Non-Patent Document 2). Therefore, the power consumption is high. In addition, although the air circulation system can be introduced to the hot air system, in this case, when operating at a low temperature, the drying rate greatly decreases due to the increase of humidity, and the power consumption further increases (see: Non-patent document 3). .

On the other hand, in the first conventional drying apparatus which does not use equipment such as a vacuum pump, a pressure reducing fan, a circulating fan, a heat pump, and a blower fan, a frame such as a ceiling, a wall and a floor of a drying chamber is an inner plate, an intermediate layer and an outer A hygroscopic material (for example, cardboard) in which a large amount of deliquescent hygroscopic agent is impregnated or coated in the middle layer is inserted without gaps, and natural ore emitting far infrared rays is provided in the drying chamber ( Reference: Patent Document 1). Therefore, the intermediate layer absorbs and diffuses the moisture evaporating from the inner plate in a short time, and the outer plate removes the moisture absorbed by the intermediate layer. Therefore, the moisture permeability by the moisture absorbent and the heat insulating property by the plate material are simultaneously achieved.

Here, the moisture permeability has three properties: hygroscopicity that absorbs moisture inside, internal diffusivity that diffuses absorbed moisture outward, and dehumidification that dehumidifies diffused moisture outward. Say.

Also, in the second conventional drying apparatus that does not use equipment such as vacuum pump, decompression fan, circulation fan, heat pump, etc., frame members such as the ceiling, wall and floor of the drying chamber are made of plate material, and heat is further generated. The heat source and the blowing means which sends the heat from a heat source to a drying chamber are provided (refer: patent document 2). Thereby, the moisture permeability which discharges the inner side water vapor outside can be secured.

JP, 2006-132911, A JP 2011-217628 A

However, although the above-mentioned first conventional drying apparatus can achieve both moisture permeability and heat insulation, salts and the like used as a deliquescent hygroscopic agent can not target food for safety reasons. There is a problem that the manufacturing cost is high due to the triple structure in which the intermediate layer is inserted between the double wall of the inner plate and the outer plate.

In the second conventional drying device described above, no deliquescent hygroscopic agent is used. However, if the plate material is thinned, high moisture permeability can be obtained but high heat insulation can not be obtained. On the other hand, if the plate material is thickened, high heat insulation can be obtained but high moisture permeability can not be obtained. That is, there is a trade-off relationship between the moisture permeability and the heat insulation, and there is a problem that it is impossible to achieve both.

Furthermore, in the first and second conventional drying devices described above, there is no means for preventing the growth of mold fungus generated inside and outside the drying device, and therefore causing the growth of mold fungus on the material to be dried. There is also a problem that

In order to solve the above-described problems, the steam flow control unit according to the present invention comprises a solid moisture permeable structure containing a sheet having a hole with a diameter of 2 μm or less and a diameter of 0.4 nm or more, and one surface of the solid moisture permeable structure And an air flow generator for generating an air flow therealong. The size smaller than 2 μm is smaller than all the spores, and the solid moisture-permeable structure containing a sheet with holes of such diameter has high moisture permeability and high thermal insulation, in the presence of air flow.

The above-mentioned solid moisture-permeable structure can contain an antimicrobial component. This prevents the growth of mold fungus.

Further, the drying device according to the present invention comprises a main drying chamber, a heat source provided in the main drying chamber, and a drying object installation chamber provided in the main drying chamber for installing the object to be dried, The ceiling, the wall, the floor and at least a part of the open / close door of the main drying room are constituted by the solid moisture permeable structure described above.

Furthermore, the drying device according to the present invention is provided in the main drying chamber, in the main drying chamber, and provided in the vicinity of a space between the main drying chamber and the reduced pressure drying chamber, and a reduced pressure drying chamber for installing the object to be dried. The ceiling of a main drying room, a wall, a floor, and at least one part of an opening-and-closing door are constituted by the above-mentioned solid moisture-permeable structure.

Furthermore, the above-described drying apparatus includes a non-moisture-permeable chamber that accommodates the main drying chamber, a condensing unit that cools air from the air outlet of the non-moisture-permeable chamber to condense the evaporation component, and drying that removes the evaporation component. A heating means for heating the air and a blowing means for returning the air to the air inlet of the impermeable chamber are provided. In particular, a heat pump or an adsorption refrigerator is desirable as a means for realizing these. The drying device also comprises a drain unit for accumulating the condensed evaporation component. This drying device is particularly suitable for the drying of herbs.

According to the present invention, the solid moisture permeable structure has high moisture permeability based on the presence of air flow and high thermal insulation, so that the power consumption of the drying device using it can be reduced. In addition, since less equipment is required, the manufacturing cost of the drying apparatus can also be reduced.

It is a sectional view showing a 1st embodiment of a steam flow control unit concerning the present invention. It is a flowchart for demonstrating the manufacturing method of the solid moisture-permeable structure of FIG. It is a sectional view showing a 2nd embodiment of a steam flow control unit concerning the present invention. It is a flowchart for demonstrating the manufacturing method of the solid moisture-permeable structure of FIG. It is a perspective view which shows the example of a change of the solid moisture-permeable structure of FIG. 1 (FIG. 3). It is the schematic which shows the 1st drying apparatus using the solid moisture-permeable structure of FIG. 1 (FIG. 3). It is a table | surface explaining the effect of the drying apparatus of FIG. 6, (A) shows the drying process data of a commercially available drying apparatus, (B) shows the drying process data of the drying apparatus of FIG. It is the schematic which shows the 2nd drying apparatus using the solid moisture-permeable structure of FIG. 1 (FIG. 3). It is the schematic which shows the example of a change of the drying apparatus of FIG. 6 (FIG. 8).

FIG. 1 is a cross-sectional view showing a first embodiment of a steam flow control unit according to the present invention.

In FIG. 1, the solid moisture-permeable structure 1 is in the form of a sheet, and is composed of nanocellulose 1a which is a cellulose nanofiber and / or a cellulose nanocrystal. The air flow generator 2 is a fan, for example, and generates an air flow A such as an air curtain on one surface of the solid moisture permeable structure 1.

Cellulose nanofibers are plant fibers having a width of 4 to 100 nm and a length of 5 μm or more, and cellulose nanocrystals are crystals of plant fibers having a width of 10 to 50 nm and a length of 100 to 500 nm. On the other hand, the diameter (longitudinal size) of the water vapor particles of the water vapor flow V is about 0.4 nm. That is, nanocellulose 1a has a gap smaller than all spores (greater than 2 μm) and larger than the longitudinal size (0.4 nm) of water vapor molecules. Accordingly, the movement of harmful microorganisms such as mold consisting of mycelium and spores can be prevented, and the water vapor flow V can pass between the nanocelluloses.

In the steam flow control unit of FIG. 1, the solid moisture permeable structure 1 has hygroscopicity, internal diffusivity and dehumidification, ie moisture permeability, of the steam flow V on the basis of the presence of the air flow A. The moisture permeability of the moisture permeable structure 1 is maintained. Specifically, the water vapor flow V is absorbed by the air flow A side portion 1A of the solid moisture permeable structure 1, and further absorbed and diffused by the interior 1B of the solid moisture permeable structure 1, and finally, the air flow of the solid moisture permeable structure 1 It is dehumidified from the opposite part 1C of A and exhibits high moisture permeability. In addition, the nanocellulose of the solid moisture-permeable structure 1 exhibits high thermal insulation at an appropriate thickness t. Therefore, when the thickness t of the solid moisture-permeable structure 1 is set to an appropriate value, the water vapor flow control unit of FIG. 1 exhibits high moisture permeability and high heat insulation. For example, the thickness t is
t = 10 to 30 mm
It is.

In the solid moisture-permeable structure 1 of FIG. 1, carbide particles can be included as a tempering material. This improves the temperability. The solid moisture-permeable structure 1 of FIG. 1 can be impregnated with a solvent containing an antibacterial component produced using a natural substance or biomass as a raw material and dried. Also, in this case, the solvent may be fulvic acid solution and / or vinegar which are natural antibacterial substances. Furthermore, as the antibacterial component, antibacterial nanoparticles (trademark) (antibacterial acrylic nanopolymer particles) manufactured by Nanocam Co., Ltd. may be used.

Below, the manufacturing method of the solid moisture-permeable structure 1 of FIG. 1 is demonstrated with reference to FIG.

First, in the nanocellulose preparation step 201, nanocellulose is prepared. For example, if it is a cellulose nanofiber, a plant cell wall is manufactured by mechanical disintegration etc., and if it is a cellulose nanocrystal, it will be manufactured by acid hydrolysis.

Next, in the dispersing step 202, the cellulose nanofibers or cellulose nanocrystals are dispersed in a solvent such as water and placed in a mold. In this case, carbide particles can be dispersed in a solvent as a tempering material. Furthermore, antibacterial ingredients produced from natural or biomass can also be dispersed. For example, the solvent is fulvic acid and / or vinegar. Furthermore, as an antibacterial component, antibacterial nanoparticles (trademark) manufactured by Nanocam Co., Ltd. may be dispersed.

Next, in a drying step 203, the solvent is evaporated to dry the cellulose nanofibers or cellulose nanocrystals.

Finally, in the cutting step 204, the cellulose nanofibers or cellulose nanocrystals are removed from the mold and cut to the desired size.

In addition, since the cut | disconnected nanocellulose itself maintains solidity, ie, mechanical strength, the means for maintaining solidity is unnecessary.

FIG. 3 is a sectional view showing a second embodiment of the steam flow control unit according to the present invention.

In FIG. 3, the solid moisture permeable structure 1 'is in the form of a sheet, and is made of a polyester sheet 1'a. Although the polyester sheet 1'a itself can maintain solidity, the polyester sheet 1'a is configured by a polyester plain weave as shown in FIG. 3 so as to maintain solidity. The polyester sheet 1'a has holes of about 0.1 to 100 μm in diameter. That is, the polyester sheet 1'a has a gap smaller than all spores (greater than 2 μm) and larger than the longitudinal size (0.4 nm) of water vapor molecules. Therefore, the movement of harmful microorganisms such as mold consisting of mycelium and spores can be prevented, and the water vapor flow V having a diameter (longitudinal size) of about 0.4 nm can pass through the polyester sheet 1'a. As a result, the polyester sheet 1'a has high moisture permeability and high thermal insulation at the proper thickness t due to the presence of the air flow A. Also in this case, the thickness t of the solid moisture permeable structure 1 ′ is
t = 10 to 30 mm
It is.

Below, the manufacturing method of the solid moisture-permeable structure 1 of FIG. 3 is demonstrated with reference to FIG.

First, in the polyester plain weave preparation step 401, a polyester plain weave is prepared.

Next, in the dispersing step 402, the polyester plain weave is dispersed in a solvent such as water and placed in a mold. In this case, carbide particles can be dispersed in a solvent as a tempering material. Furthermore, antibacterial ingredients produced from natural or biomass can also be dispersed. For example, the solvent is fulvic acid and / or vinegar. Furthermore, as an antibacterial component, antibacterial nanoparticles (trademark) manufactured by Nanocam Co., Ltd. may be dispersed.

Next, in a drying step 403, the solvent is evaporated to dry the polyester plain weave.

Finally, in a cutting step 404, the polyester plain weave is removed from the mold and cut to the desired size.

In addition, since the cut polyester plain weave itself maintains solidity or mechanical strength, a means for maintaining solidity is unnecessary.

As shown in FIG. 5A, in order to further maintain the mechanical strength of the solid moisture-permeable structure 1, the solid moisture-

permeable structures

1, 1 ′ of FIGS. 1 and 3 are mesh-like members 3-1, 3 -2 Fix by cross over an iron round bar with a diameter of 2.5 mm, for example, baked with melamine.

Further, as shown in FIG. 5B, in order to facilitate assembly, disassembly, and removal, the solid moisture permeable structures 1 and 1 'of FIGS. 1 and 3 are made into a unit 4 of a predetermined size.

FIG. 6 is a schematic view showing a first drying apparatus using the solid moisture permeable structure 1 (1 ') of FIG. 1 (FIG. 3).

In FIG. 6, the drying apparatus comprises a main drying chamber 10 comprising a ceiling 11, a wall 12, a floor 13 and an open / close door (not shown), and three-stage trays 14-1 and 14-2 for setting objects to be dried. , 14-3, the heater 15, the blower fans 16-1 and 16-2, the temperature sensor 17 for detecting the temperature T of the main drying chamber 10, and the temperature T of the temperature sensor 17 The control unit (microcomputer) 18 controls the heater 15 and the blower fans 16-1 and 16-2.

In FIG. 6, the ceiling 11, the wall 12, the floor 13, and the open / close door (not shown) of the main drying chamber 10 are constituted by the solid moisture permeable structure 1 (1 ') of FIG. 1 (FIG. 3). Further, on the inner surface of the ceiling 11, the wall 12, the floor 13, and the open / close door (not shown), there is an airflow A by the blower fans 16-1 and 16-2 as an airflow generator. Therefore, the ceiling 11, the wall 12, the floor 13, and the open / close door together with such an air flow generator constitute the steam flow control unit of FIGS. 1 and 3, respectively.

The operation of the dryer of FIG. 6 will now be described.

First, materials to be dried, such as vegetables and herbs, are placed on the trays 14-1, 14-2, and 14-3 in the material installation chamber 14. Next, a predetermined temperature T _0, for example, 40 ° C., is set, and the heater 15 and the blower fans 16-1 and 16-2 are activated. Control unit 18 for turning on and off the heater 15 so that the temperature T of the temperature sensor 17 reaches a predetermined temperature T _0. As a result, the air flow A heated by the heater 15 passes through the trays 14-1, 14-2, and 14-3 to dry the material to be dried, and descends along the ceiling 11 and the wall 12. It circulates. At this time, the water vapor pressure of the air flow A which has been dried rises, and the water vapor flow V contained in the air is a solid moisture permeable structure that constitutes the ceiling 11, the wall 12, the floor 13, and the open / close door (not shown) Is discharged from the inside to the outside of the drying device.

The interior of the solid moisture-permeable structure of the ceiling 11, the wall 12, the floor 13, and the open / close door (not shown) is a circulating type, and heat other than the heat required for drying is not leaked by the heat insulation of the solid moisture-permeable structure. Or, if leaked, the heat is small and is circulated in the non-circulating dryer. On the other hand, since the steam flow V is discharged by the solid moisture permeable structure, the steam pressure of the circulated air flow A becomes low, and the material to be dried can be dried.

A comparison was made between a commercially available drying device (manufactured by Tomei Tec Co., Ltd., product name: Puchimarenggi, model name: TTM-435S) and the drying device shown in FIG. Common conditions are as follows.
Set drying temperature: 50 ° C
Drying time: 5 hours Sample to be dried (per piece): 30-70 mm in diameter, 12 mm wide circular slice vegetables Drying outside temperature at start of drying: 21.5 ° C.
At the end of drying Temperature outside the dryer: 17.0 ° C
Humidity outside the dryer at the start of drying: 38.5%
The humidity outside the dryer at the end of drying: 40.0%
Moreover, the conditions of the drying apparatus of FIG. 6 are as follows.
Dimensions: Width 535 mm, depth 415 mm, length 355 mm
Ceiling, wall, six sides of the floor: Solid moisture-permeable structure 1 'consisting of the polyester sheet of Fig. 3

The results shown in FIG. 7A were obtained for the commercially available drying apparatus, and the results shown in FIG. 7B were obtained for the drying apparatus shown in FIG. That is, the amount of water loss was 129.3 for the commercial drying device and 125.4 for the drying device of FIG. Therefore, the drying rate was hardly changed. On the other hand, the power consumption required for drying was 0.89 kWh for the commercial drying device and 0.55 kWh for the drying device of FIG. Therefore, a large power consumption reduction effect was recognized.

In the drying apparatus shown in FIG. 6 described above, the ceiling 11, the wall 12, the floor 13, and the open / close door are constituted by the solid moisture permeable structure 1 (1 ′) of FIG. 1 (FIG. 3). The wall 12, the floor 13, and at least a part of the open / close door may be configured by the solid moisture permeable structure 1 (1 ') of FIG. 1 (FIG. 3).

Further, in the drying apparatus shown in FIG. 6 described above, the air flow may be natural convection without providing the blower fans 16-1 and 16-2. In this case, the air flow generator is the drying object installation chamber 14 itself.

Furthermore, in the drying apparatus shown in FIG. 6 described above, the heater 15 composed of a heat exchanger usually requires high power. Therefore, instead of the heater 15, a heat pipe such as a conduction tube (trademark) may be used to utilize low heat of 100 ° C. or less from the outside.

Since the heat pipe transfers heat by vaporization and liquefaction of the medium as compared with a conventional heat exchanger, it can transfer heat even if the heat transfer rate is large and the temperature difference between the heat-producing medium and the heat-absorbing medium is small. In particular, in the case of the heat pipe, in the CONDUCTION TUBE (TM), the evaporative working fluid is enclosed in a double-tube vacuum sealed chamber consisting of an outer chamber and an inner core pipe to evaporate the evaporative working fluid. And liquefaction to exchange heat between the fluid flowing through the core pipe and the fluid outside the chamber. Therefore, ultrasonic waves and far infrared rays are generated when the vaporized medium liquefies inside the tube, so heat can be transmitted to the inside of the object to be dried, and the drying speed can be increased and the uniformity of drying can be realized.

Furthermore, the drying device shown in FIG. 6 described above can be applied to a drying device having a rotary kiln (cylindrical) main drying chamber. The rotary kiln-type main drying chamber has a sideways cylindrical shape and is suitable for drying okara and the like. In this case, at least a part of the cylindrical wall of the rotary kiln type main drying chamber is constituted by the solid moisture permeable structure 1 (1 ') of FIG. 1 (FIG. 3).

FIG. 8 is a schematic view showing a second drying apparatus using the solid moisture permeable structure 1 (1 ') of FIG. 1 (FIG. 3).

In FIG. 8, the drying apparatus is provided in a main drying chamber 20, in the main drying chamber 20, and includes a reduced pressure drying chamber 30 for installing a material to be dried, and a control unit (microcomputer) 40.

The main drying room 20 comprises a ceiling 11, a wall 12, a floor 13, and an open / close door (not shown).

Three-stage trays 31-1, 31-2, and 31-3 for installing the material to be dried in the reduced-pressure drying chamber 30, the reduced-pressure fan 32 and the circulating fan 33 provided in the vicinity of the boundary with the main drying chamber 20. A temperature sensor 34 and a pressure sensor 35 for detecting the temperature T and the pressure P of the reduced-pressure drying chamber 30 are provided.

The control unit 40 controls the pressure reducing fan 32 and the circulating fan 33 based on the temperature T of the temperature sensor 34 and the pressure P of the pressure sensor 35.

In FIG. 8, the ceiling 21, the wall 22, the floor 23 and the opening / closing door (not shown) of the main drying chamber 20 form the solid moisture permeable structure 1 (1 ′) of FIG. 1 (FIG. 3). Moreover, the airflow A by the pressure reduction fan 32 as an airflow generator exists in the inner surface of the ceiling 21, the wall 22, the floor 23, and an opening-closing door (not shown). Therefore, the ceiling 21, the wall 22, the floor 23, and the open / close door (not shown) together with such an air flow generator constitute the water vapor flow control unit of FIGS. 1 and 3 respectively. Further, since the main drying chamber 20 is thermally insulated, the vacuum drying chamber 30 does not have to be thermally insulated.

In the reduced pressure drying chamber 30, the air in the reduced pressure drying chamber 30 is exhausted into the main drying chamber 20 by the on / off operation of the reduced pressure fan 32 and the circulation fan 33, and the pressure in the reduced pressure drying chamber 30 is reduced. At this time, the temperature of the air sucked into the reduced-pressure drying chamber 30 from the main drying chamber 20 is raised by the heat generated from the reduced-pressure fan 32 and the circulation fan 33. In this way, drying under reduced pressure is performed. A heat exchanger or a heat pipe, particularly a conduction tube (trademark) may be provided in the reduced pressure drying chamber 30 as a heat source.

The operation of the dryer of FIG. 8 will now be described.

First, the material to be dried, such as vegetables and herbs, is placed on trays 31-1, 31-2, and 31-3. Next, predetermined temperature T ₀ and pressure P ₀ are set, and the pressure reducing fan 32 and the circulating fan 33 are activated. Control unit 40 for turning on and off the vacuum fan 32 and the circulating fan 33 so that the pressure P of and the pressure sensor 35 as the temperature T of the temperature sensor 34 becomes a predetermined temperature T ₀ is a predetermined pressure P _0. As a result, the air flow A sucked from the main drying chamber 20 passes through the trays 31-1, 31-2, and 31-3 to dry the material to be dried, and descends along the ceiling 21 and the wall 22. It circulates. At this time, the water vapor pressure of the air flow A which has been dried is increased, and the water vapor flow V contained in the air is a solid moisture permeable structure constituting the ceiling 21, the wall 22, the floor 23 and the open / close door (not shown) Thus, the inside of the main drying chamber 20 is discharged to the outside.

As described above, in the drying apparatus shown in FIG. 8, since the insulation of the reduced-pressure drying chamber required in the conventional reduced-pressure drying apparatus becomes unnecessary, the manufacturing cost can be reduced. In addition, power consumption can be reduced because heat conversion between intake and exhaust is unnecessary.

In the drying apparatus shown in FIG. 8 described above, if the pressure and temperature of the decompression drying chamber 30 can be controlled only by the decompression fan 32, the circulation fan 33 becomes unnecessary.

FIG. 9 is a schematic view showing a modified example of the drying device of FIG. 6 and FIG.

In FIG. 9, the main drying chamber 10 (20) of the solid moisture-permeable structure of FIG. 6 (FIG. 8) is accommodated in the non-moisture-permeable chamber. The moisture impermeable chamber 50 may be either heat insulation or non heat insulation, and includes, for example, nanocellulose and / or nanofibers. The moisture impermeable chamber 50 has an air outlet 50-1 and an air inlet 50-2 connected to the primary side and the secondary side of the heat pump 51. On the primary side of the heat pump 51, the air flow A and the steam flow V from the air outlet 50-1 of the moisture impermeable chamber 50 are cooled to condense the evaporation component V ′ and discharge it to the drain unit 52. On the other hand, the dry air flow A from which the evaporation component is discharged is heated on the secondary side of the heat pump 51 and returned to the air inlet 50-2 of the impermeable chamber 50. The temperature of the moisture impermeable chamber 50 can be freely set to, for example, 20.degree. The drying device of FIG. 9 is particularly effective when used for drying herbs, and the herb components can be recovered to the drain unit 52.

The present invention can be applied to any modifications within the obvious scope of the above-described embodiment.

The drying device using the water vapor flow control unit according to the present invention can be used for drying equipment for trees, plants other than drying equipment for vegetables, herbs and the like, waterproof equipment, and the like.

1, 1 ': Solid moisture permeable structure 1a: nanocellulose 1'a: polyester sheet 2: air flow generator 3-1, 3-2: mesh-like member
4: Unit 10: Main drying room
11: ceiling 12: wall 13: floor
14: Drying object installation room 14-1, 14-2, 14-3: Tray
15: Heaters 16-1, 16-2: Blower fan 17: Temperature sensor 18: Control unit 20: Main drying room 21: Ceiling 22: Wall 23: Floor
30: reduced pressure drying chamber 31-1, 31-2, 31-3: tray
32: decompression fan 33: circulation fan 34: temperature sensor 35: pressure sensor 40: control unit 50: non moisture permeable chamber 50-1: air outlet 50-2: air inlet 51: heat pump 52: drain unit A: air flow V : Steam flow

Claims

A solid moisture-permeable structure containing a sheet having pores with a diameter of 2 μm or less and 0.4 nm or more;
An air flow generator for generating an air flow along one surface of the solid moisture permeable structure.
The steam flow control unit of claim 1, wherein the solid moisture permeable structure comprises one of nanocellulose and a polyester sheet.
The water vapor flow control unit according to claim 2, wherein the nanocellulose is cellulose nanofibers and / or cellulose nanocrystals.
The water vapor flow control unit according to claim 2, wherein the polyester sheet is a polyester plain weave.
The water vapor flow control unit according to claim 1, wherein the solid moisture permeable structure further contains a tempering material.
The steam flow control unit according to claim 5, wherein the refining material is carbide particles.
The water vapor flow control unit according to claim 1, wherein the solid moisture permeable structure further contains an antimicrobial component.
The steam flow control unit according to claim 7, wherein the antibacterial component is fulvic acid and / or an vinegar component.
The water vapor flow control unit according to claim 7, wherein the antibacterial component is antibacterial nanoparticles (trademark).
The water vapor flow control unit according to claim 1, wherein the solid moisture permeable structure is fixed by a mesh-like member.
The water vapor flow control unit according to claim 1, wherein the solid moisture permeable structure is unitized into a predetermined size.
Main drying room,
A heat source provided in the main drying chamber;
A drying material installation chamber provided in the main drying chamber for installing a drying object;
A drying apparatus constituted by the solid moisture permeable structure according to any one of claims 1 to 11, wherein at least a part of a ceiling, a wall, a floor and an open / close door of the main drying chamber.
13. The drying apparatus of claim 12, wherein the airflow generator comprises a blower fan.
With a rotary kiln type main drying room,
A heat source provided in the rotary kiln type main drying chamber;
A drying apparatus constituted by the solid moisture permeable structure according to any one of claims 1 to 11, at least a part of the cylindrical wall of the rotary kiln type main drying chamber.
Main drying room,
A vacuum drying chamber provided in the main drying chamber for installing a material to be dried;
A vacuum fan provided in the vicinity between the main drying chamber and the vacuum drying chamber
Equipped with
A drying apparatus constituted by the solid moisture permeable structure according to any one of claims 1 to 11, wherein at least a part of a ceiling, a wall, a floor and an open / close door of the main drying chamber.
The drying apparatus according to claim 15, further comprising a circulating fan provided in the vicinity between the main drying chamber and the reduced-pressure drying chamber.
The drying apparatus according to claim 15, further comprising a heat source provided in the reduced-pressure drying chamber.
The drying apparatus according to claim 12, wherein the heat source is a heat pipe.
19. The drying apparatus of claim 18, wherein the heat pipe is a conduction tube (trademark).
further,
A non-permeable chamber containing the main drying chamber;
Condensing means for cooling the air from the air outlet of the non-moisture permeable chamber to condense the evaporation component;
Heating means for heating the dry air from which the evaporation component has been removed;
The drying device according to any one of claims 12 to 19, further comprising: blowing means for returning to the air inlet of the non-moisture permeable chamber.
21. The drying apparatus according to claim 20, further comprising a drain unit for accumulating the condensed evaporation component.
21. The drying apparatus of claim 20, wherein the moisture impermeable chamber comprises nanocellulose and / or nanofibers.