JP2017013032A - Method for producing moisture control element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily producing a moisture control element.SOLUTION: Provided is a method for easily producing a moisture control element comprising: a step where a pair of planar members made of resin formed so as to be a planar shape are made into an integrated composite sheet 11, the integrated sheet 11 is immersed into the first coating liquid 21 containing a moisture absorbent and is pulled up to form the coating film a of the first coating liquids 21 on both the sides of the composite sheet 11, and thereafter, the composite sheet 11 is peeled to obtain a one side coating plate member having the first face including the coating film a and the second face not including the coating film a; a step where the second planer member made of resin formed so as to be a corrugated shape is immersed into the second coating liquid 21 including a moisture absorption agent and is pulled up to obtain a both side coating plate member having the coating film a on both the sides of the second planar member; and a step where the first face of one side coating plating member and the crest part of both side coating plate member are adhered.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a method for manufacturing a humidity control element.

Conventionally, a humidity control element using a hygroscopic action by a hygroscopic agent is known. This type of humidity control element alternately stacks flat plate members and corrugated plate members, and bonds the flat plate members and corrugated plate members at the crests of the corrugated plate members, A plurality of gas flow paths partitioned by corrugated plate members are formed. Thereby, the processing target air to be cooled and the heat exchange air are circulated to the gas flow paths adjacent to each other through the flat plate member among the plurality of gas flow paths, and the processing target air is passed through the flat plate member. The heat to be held can be conducted to the heat exchange air to cool the air to be treated.
Furthermore, if a hygroscopic layer formed by adhering a hygroscopic agent is provided on the surface of the flat plate member and the corrugated plate member facing the gas flow path through which the air to be treated flows, the moisture of the moisture-absorbing air as the air to be treated is hygroscopic. By making the agent absorb moisture, it is possible to promote heat dissipation from the moisture-absorbing air and to enhance the cooling efficiency by the heat exchange air.

Here, a gravure roll coater for forming a coating film by applying a coating liquid containing a hygroscopic agent with a roll in order to provide a hygroscopic layer only on one surface facing the gas flow path through which air to be treated flows in the flat plate member. It is used (for example, cited document 1).
However, the method using a gravure roll coater has a long facility and is complicated to control, and a humidity control element cannot be easily manufactured.

As another method of providing a moisture absorption layer on the humidity control element, for example, a method of providing a moisture absorption layer on the surface of a member forming the humidity control element by dip coating in which the humidity control element itself is immersed in a coating liquid containing a moisture absorbent. Is known (for example, Patent Document 2).
However, dip coating is simple in both equipment and process, but since a coating film is formed on all surfaces that come into contact with the coating liquid, a moisture absorbing layer is provided only on the necessary part of the humidity control element for easy humidity control. The device could not be manufactured.

JP 2012-170832 A JP 2007-010181 A

  In such dip coating, a method of manufacturing a humidity control element by masking with a mask material at a place where a moisture absorption layer is not provided and providing a moisture absorption layer only at a necessary portion can be considered. However, this method is not preferable because a mask material is required separately. Therefore, it has become necessary to provide a new method that can easily manufacture a humidity control element.

  An object of this invention is to provide the manufacturing method of a humidity control element which manufactures a humidity control element simply in view of the said situation.

  The characteristic configuration of the manufacturing method of the humidity control element according to the present invention is that a pair of resin-made first plate-like members formed in a flat plate shape are formed as an integral composite sheet with their surfaces facing each other, and a hygroscopic agent is used. After immersing the composite sheet in the first coating liquid to be contained and pulling up to form a coating film of the first coating liquid on the back surface of the first plate-like member, the composite sheet is peeled off and the coating film is removed. A step of obtaining a single-side coated plate member having a first surface having a second surface and a second surface not having the coating film, and a second plate-shaped member made of resin formed into a corrugated plate, containing a hygroscopic agent A step of obtaining a double-sided coated plate member having a coating film on both sides of the second plate-shaped member after being dipped in the coating liquid, the first surface of the single-sided coated plate member, and a pile of the double-sided coated plate member And a step of bonding the parts.

  According to this configuration, the surface of the first plate-like member is masked by the surface of the other first member by forming the pair of first plate-like members as an integral composite sheet with the surfaces facing each other. be able to. If it does so, when the said composite sheet is immersed in the 1st coating liquid containing a hygroscopic agent, a contact with each surface and 1st coating liquid can be prevented. Therefore, when this composite sheet is peeled off, the back surface in contact with the first coating liquid is the first surface having a coating film containing a hygroscopic agent, the masked surface is the second surface having no coating film, A single-sided application member having one surface and a second surface can be obtained. And when this single-sided application member is used for a humidity control element, since this coating film contains a hygroscopic agent, it can function as a hygroscopic layer.

  Furthermore, when the second plate-like member is immersed in a second coating solution containing a hygroscopic agent, a double-sided coated member having a coating film containing the hygroscopic agent on both surfaces thereof can be obtained. In the same manner as described above, since this coating film contains a hygroscopic agent, it can function as a hygroscopic layer.

And if the 1st surface of a single-sided coating member and the peak part of a double-sided coating member are adhere | attached, the gas flow path divided by the 1st surface of a single-sided coating member and a double-sided coating member can be formed. Then, since this flow path is provided with a moisture absorption layer on the inner wall surface of the flow path, it is possible to adsorb moisture in the air to be treated, and the adsorption heat when the moisture absorption layer adsorbs moisture is the Since heat can be exchanged with the outside via the two surfaces, it functions as a humidity control unit capable of heat exchange. And the humidity control part manufactured in this way can be used as a humidity control element.
That is, by doing in this way, a simple method for manufacturing a humidity control element can be provided.

  The further characteristic structure of the manufacturing method of the humidity control element which concerns on this invention exists in the point which has further the process of adhere | attaching the said 2nd surface of the said single-sided application board member, and the peak part of a said 2nd plate-shaped member.

According to this configuration, when the second surface of the single-side application member and the peak portion of the second plate-like member are further bonded, the cooling unit having a gas flow path partitioned by the single-side application member and the second plate-like member is provided. Can be formed. Then, this cooling unit can exchange heat with the humidity control unit via the single-sided application member. As a result, the heat of adsorption when the moisture absorption layer adsorbs moisture is efficiently removed by the cooling unit, so that the moisture absorption capability of the moisture absorption layer can be improved.
That is, by doing in this way, the manufacturing method of the humidity control element with a high moisture absorption ability which has a humidity control part and a cooling part simply can be provided.

  A further characteristic configuration of the method for manufacturing a humidity control element according to the present invention is that the first surface of the single-sided coated plate member and the peak portion of the double-sided coated plate member are bonded to each other. With the first surfaces of the members facing each other, the double-sided coating plate member is disposed between the pair of single-sided coating members, and the first surface and the peak portion of the double-sided coating plate member, It has the process of adhering.

  According to this configuration, with the first surfaces of the pair of single-sided application plate members facing each other, the double-sided application plate member is disposed between the pair of single-sided application members, and the first surface and the double-sided application plate member By adhering the crests, gas flow paths partitioned by the first surface of the single-sided application member and the double-sided application member can be formed on both sides of the double-sided application member.

  A further characteristic configuration of the method of manufacturing a humidity control element according to the present invention is a process of bonding the second surface of the single-side coated plate member and a peak portion of the second plate-shaped member in a pair of the single-sided coatings. With the second surfaces of the plate members facing each other, the second plate-shaped member is disposed between the pair of single-sided application members, and the second surface and the second plate-shaped member It has the process which adhere | attaches a mountain part.

  According to this configuration, with the second surfaces of the pair of single-side coating plates facing each other, the second plate-shaped member is disposed between the pair of single-side coating members, and the second surface and the second plate By adhering the crests of the shaped member, gas flow paths partitioned by the first surface of the single-sided application member and the double-sided application member can be formed on both sides of the double-sided application member.

  In a further characteristic configuration of the method for manufacturing a humidity control element according to the present invention, the first plate-like member is constituted by a plate member mainly composed of a polyester-based resin, and the second plate-like member is mainly composed of a polyester-based resin. It is composed of a plate member as a component, the hygroscopic agent is composed of a member mainly composed of a polyacrylic acid resin, and the binder of the first coating liquid and the second coating liquid is composed mainly of a urethane emulsion. It is in the point comprised with the resin material to do.

According to this configuration, since the first plate-like member and the second plate-like member are plate members mainly composed of a polyester-based resin, this humidity control element can be made lightweight and durable.
Moreover, by using the hygroscopic agent as a member mainly composed of a polyacrylic acid resin, it is possible to give the humidity control element high moisture absorption performance while keeping the humidity control element lightweight.
The main component of the binder of the first coating liquid and the second coating liquid is a urethane-based emulsion, so that a flexible base material mainly composed of urethane and a good binding property to a polyester-based resin can be used. A film can be formed.

  Furthermore, the polyacrylic acid-based resin expands and contracts its volume greatly during moisture adsorption / desorption, but by making the base material of the first coating liquid and the second coating liquid into urethane with excellent flexibility, The coating film can be maintained without being peeled off while absorbing the expansion and contraction of the acrylic resin and maintaining the moisture absorption performance.

  The further characteristic structure of the manufacturing method of the humidity control element which concerns on this invention exists in the point which has a metal vapor deposition layer on said 2nd surface.

  According to this configuration, since the metal vapor deposition layer has high thermal conductivity, the thermal conductivity of the entire single-sided coating member is increased, and the heat exchange efficiency of the entire humidity control element is increased. Can be increased.

Schematic of an air conditioning system using a humidity control element according to the present embodiment Schematic diagram of humidity control device according to this embodiment Main part explanatory drawing of the humidity control element which concerns on this embodiment Assembly schematic diagram of humidity control element according to this embodiment Schematic of the moisture absorption layer of the humidity control element according to the present embodiment The figure which shows the method of obtaining the composite sheet which concerns on this embodiment Explanatory drawing of the method of forming the coating film concerning this embodiment Assembly schematic diagram of humidity control element according to this embodiment

The humidity control element manufacturing method according to the embodiment of the present invention includes, for example, a humidity control element D (D1, D1, D1, D2) that adjusts the temperature and humidity of the air to be processed and the heat exchange air of the desiccant air conditioning system 100 as shown in FIG. It is used as a production method of D2).
As shown in FIGS. 2 and 3, the humidity control elements D1 and D2 include a back surface 14 (first surface) having a moisture absorption layer a (coating film) and a surface 13 (second surface) not having the moisture absorption layer a. Corrugated plate member A (single-sided coated plate member), corrugated plate member C (second plate-shaped member) formed in a corrugated plate shape, and corrugated plate member B (double-sided coated plate) having a moisture absorption layer a on both sides of the corrugated plate member C Member) are sequentially laminated.
The gas flow path 1 is formed as a flow path in which the flat plate member A and the corrugated plate member B are bonded to each other at the peak portion Ba of the corrugated plate member B and are partitioned by the corrugated plate member B between the flat plate members A. .
The gas flow path 2 is formed as a flow path in which the flat plate member A and the corrugated plate member C are bonded to each other at the crest portion Ca of the corrugated plate member C and partitioned by the corrugated plate member C between the flat plate members A. .
The gas flow path 1 and the gas flow path 2 are alternately arranged for each adjacent stage in a direction in which the flow directions in a plan view intersect each other.
A hygroscopic layer a formed by adhering a hygroscopic agent a1 (hygroscopic agent) is provided on the back surface 14 of the flat plate member A facing the gas flow path 1 and both surfaces of the corrugated plate member B.
A metal vapor deposition layer c is provided on the surface 13 of the flat plate member A facing the gas flow path 2.

Here, as shown in FIG. 5, the flat plate member A is provided with a metal vapor deposition layer c on the surface 13 of the thin film 10 (first plate-shaped member) formed in a flat plate shape mainly composed of a polyester-based resin, A hygroscopic agent a1 is provided on the back surface by adhering as a hygroscopic layer a with a binder b mainly composed of a urethane resin emulsion.
The corrugated plate member C is obtained by processing the same thin film 10 that constitutes the flat plate member A into a corrugated plate shape.
As shown in FIG. 5, the corrugated member B is obtained by adhering a hygroscopic agent a <b> 1 as a hygroscopic layer a on both surfaces of the corrugated member C with a binder b whose main component is a urethane resin emulsion.
[Air conditioning system]
Next, the air conditioning system 100 provided with the humidity control elements D1 and D2 of this embodiment is demonstrated.
FIG. 1 is a diagram illustrating a configuration of an air conditioning system 100 including humidity control elements D1 and D2. As illustrated, the air conditioning system 100 includes two humidity control elements D1 and D2. As will be described later, FIG. 1 shows a state where a dehumidifying operation is performed by the humidity control element D1 and a regeneration operation is performed by the humidity control element D2. The air conditioning system 100 causes outdoor air taken in from the outdoor space to flow as processing target air to the humidity control unit DS of one humidity control element D1, and sends the processing target air after passing through the humidity control unit DS to the indoor space. It is configured as follows. The air conditioning system 100 includes an air supply passage L1 for supplying outdoor air taken from the outdoor space into the room, and an exhaust passage L2 for discharging indoor air taken out from the indoor space to the outside. In the present embodiment, description of a fan, a blower and the like for flowing air is omitted.

  In the middle of the air supply passage L1, the humidity control element D1 and the sensible heat exchanger 30 are sequentially arranged from the outside toward the room. In the middle of the exhaust passage L2, a sensible heat exchanger 30, a heater 31, and a humidity control element D2 are sequentially arranged from the room toward the outside. The air taken into the air supply passage L1 from the outdoor space is introduced into the inlet Win of the humidity control section DS of the humidity control element D1, and after the adsorption processing is performed in the humidity control section DS, that is, the air is dehumidified. After being performed, it exits from the outlet Wout of the humidity control section DS and travels toward the sensible heat exchanger 30 via the air supply passage L1.

  In the sensible heat exchanger 30, heat is exchanged between the outdoor air after the dehumidification (moisture adsorption process) is performed by the humidity control element D1 and the indoor air taken in from the room, and the temperatures of the two approaches. It will be. In other words, the outdoor air after the moisture is reduced by the moisture adsorption process in the humidity control element D1 passes through the supply passage L1 in a state where the temperature is brought close to the temperature of the indoor air by the sensible heat exchanger 30. Through the room.

  The room air after heat exchange is performed in the sensible heat exchanger 30 is heated by a heater 31 provided in the middle of the exhaust passage L2. In the example shown in FIG. 1, a heating medium passage 32 is connected to the heater 31, and heat exchange between the heating medium flowing through the heating medium passage 32 and the indoor air flowing through the exhaust passage L2 is performed. Done. And the indoor air after temperature rising is supplied to the humidity control element D2 via the exhaust passage L2.

  The air heated by the heater 31 is introduced into the inlet Win of the humidity control section DS of the humidity control element D2 through the exhaust passage L2, and after the desorption processing is performed in the humidity control section DS, that is, After being used for regeneration of the moisture absorbent a1, it exits from the outlet Wout of the humidity control section DS and is discharged outside through the exhaust passage L2.

  In addition, the air conditioning system 100 of the present embodiment is configured such that outdoor air flows through the cooling unit CS of the humidity control element D1. Specifically, the air conditioning system 100 includes a branch portion 23 in the middle of the air supply passage L1 upstream of the humidity control element D1, and a joining portion 24 in the middle of the exhaust passage L2 downstream of the humidity control element D2. Has a branch passage L3. The outdoor air flowing through the branch passage L3 is introduced into the inlet Cin of the cooling unit CS of the humidity control element D1, and absorbs heat of adsorption generated when the humidity control unit DS performs the adsorption process through the flat plate member A. After that, it exits from the outlet Cout of the cooling part CS and reaches the merging portion 24 of the exhaust passage L2. In this way, air having a temperature obtained by adding heat of adsorption to the outdoor air flows to the humidity control section DS of the humidity control element D1, and air having a temperature equivalent to that of the outdoor air flows to the cooling section CS of the humidity control element D1. Flowing. That is, since the temperature of the air flowing through the cooling unit CS is lower than the temperature of the air flowing through the humidity control unit DS, the humidity control unit DS can be reliably cooled by the air flowing through the cooling unit CS.

  Moreover, although illustration is abbreviate | omitted, the air conditioning system 100 is provided with the switching mechanism etc. which switch the humidity control element D1 and the humidity control element D2. As a result, it becomes possible to regenerate the humidity control element D1 after being used for the adsorption process, and to use the humidity control element D2 after the regeneration of the moisture absorbent a1 for the adsorption process. . Although not shown in the figure, the air conditioning system 100 can be used to humidify the air supplied to the room.

  In the above-described configuration, in the humidity control unit DS of the humidity control element D1, the outdoor air OA supplied as the conditioned air SA is absorbed by the indoor air RA flowing through the cooling unit CS while absorbing moisture. Dehumidified and can exhibit high dehumidifying ability.

[Humidity control element D]
As shown in FIG. 2, the humidity control element D includes a humidity control unit DS and a cooling unit CS.
And the humidity control part DS is comprised by the flat plate member A and the corrugated sheet member B, and the cooling part CS is provided with the flat plate member A, the corrugated sheet member C, a side plate, etc. (not shown).
Here, the side plate is a wall surface that blocks the side surface end in the flow direction of the humidity control unit DS or the cooling unit CS, and a flow path can be formed at the end of the humidity control unit DS or the cooling unit CS. The moisture absorption layer a can be provided on the inner surface of the side plate of the humidity control section DS. Moreover, the metal vapor deposition layer c can be provided in the inner surface of the cooling unit CS.

  As shown in FIG. 4, corrugated plate members B (B1, B2,...) Are arranged in the humidity control section DS along the back surface 14 of the flat plate members A (A1, A2,...). Yes. And the back surface of a pair of flat plate member A is made to oppose, the corrugated sheet member B is pinched | interposed between them, and the back surface 14 of the flat plate member A and the peak part Ba of the corrugated sheet member B have adhere | attached. A plurality of flow paths partitioned by the back surface 14 of the flat plate member A and the corrugated sheet member B are the gas flow paths 1.

  As shown in FIG. 4, corrugated plate members C (C1, C2,...) Are disposed in the cooling unit CS along the surface 13 of the flat plate member A (A1, A2,...). . And the surface 13 of a pair of flat plate member A is made to oppose, the corrugated sheet member C is pinched | interposed between them, and the surface 13 of the flat plate member A and the peak part Ca of the corrugated sheet member C are adhere | attached. A plurality of flow paths partitioned by the surface 13 of the flat plate member A and the corrugated sheet member C are the gas flow paths 2.

  And as shown in FIG. 4, the corrugated sheet member B (B1,...) Disposed in the humidity control section DS and the corrugated sheet member C (C1,...) Disposed in the cooling section CS. Is arranged by alternately stacking the humidity control section DS and the cooling section CS in a state where the waves of the wave front are orthogonal to each other. That is, the gas flow path 1 and the gas flow path 2 are alternately arranged for each adjacent stage in a direction in which the flow directions in a plan view intersect each other.

  That is, as shown in FIG. 1, each of the pair of humidity control elements D1 and D2 includes a humidity control unit DS that forms a gas flow path 1 that absorbs moisture contained in the passing moisture absorption air, and the processing target air that passes. And the cooling part CS forming the gas flow path 2 as the gas flow path for receiving the heat generated by the moisture absorption in the humidity control section DS are alternately stacked for each adjacent stage while being partitioned by the flat plate member A. It is configured.

As a result, the humidity control elements D1 and D2 absorb moisture by passing the air to be processed from a specific direction to the humidity control section DS in the stacking direction view of the humidity control section DS and the cooling section CS. The cooling air is made to flow from the direction orthogonal to the specific direction with respect to the cooling unit CS so that the heat of moisture absorption due to moisture absorption in the humidity control unit DS can be recovered.
Further, in the cooling unit CS, the heat radiation in the humidity control unit DS is efficiently transmitted to the cooling unit CS by the metal vapor deposition layer c. Further, since the heat transferred here is conducted in the direction crossing the plurality of flow paths defined by the corrugated plate member B in the adjacent humidity control section DS, the surface 13 of the flat plate member A is transferred to the heat transfer surface. As a form that can be used very effectively.

[Operation method of air conditioning system]
As shown in FIG. 1, the switching mechanism includes a first flow state in which the humidity control element D1 on one side is the moisture absorption side and the humidity control element D2 on the other side is the regeneration side, and illustration is omitted. It is configured to be able to switch between a second flow state in which the humidity control element D2 on the side is the moisture absorption side and the humidity control element D1 on the one side is the regeneration side.

  When the explanation is added, the switching mechanism causes the air supply passage R1 to be in a state in which the processing target air taken in from the outdoor space flows through the humidity control section DS of the humidity control element D1 on one side, and the exhaust passage L2 The cooling air taken out from the space is the evaporator J, the cooling part CS of the humidity control element D1 on one side, the condenser G, and the humidity control part DS of the humidity control element D2 on the other side in the order of description. Although not shown, the first flow state in which the flow is performed and the air to be processed that has taken in the supply passage R1 from the outdoor space flow through the humidity control section DS of the humidity control element D2 on the other side. The cooling air taken out from the indoor space through the exhaust passage L2 becomes the evaporator J, the cooling part CS of the humidity control element D2 on the other side, the condenser G, and the humidity control element D1 on the one side. The humidity control unit DS is configured to be switchable between a second flow state in which the humidity control unit DS flows in the order described. To have.

  Incidentally, when the switching mechanism switches the air flow state to the first flow state, the outdoor air OA is cooled while being dehumidified by passing through the humidity control section DS of the humidity control element D1. Cooled by room air RA passing through the section CS, and supplied to the indoor space as conditioned air SA. On the other hand, the humidity control section DS of the humidity control element D2 is regenerated because the room air RA heated by the condenser G is supplied.

[About flat plate member A, corrugated plate member B, and corrugated plate member C]
As the flat plate member A, the corrugated plate member B, and the corrugated plate member C, those obtained by processing the thin film 10 based on a polyester resin are used.
Examples of such polyester resins include polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polyethylene naphthalate (PEN), and these polyester resin raw materials are copolymerized together with other resin components. A polyester blend material obtained by mixing a polyester copolymer or another resin material can be used.
In addition, when the polyester resin is the main component, the polyester resin is the main component if the resin raw material constituting the polyester is used in the weight ratio more than any of the resin raw materials not forming the polyester. And additives other than resin raw materials are not considered. The definition of this principal component is the same in other examples.

In this example, the flat plate member A is formed by depositing a metal on the surface 13 of the thin film 10 to provide a metal vapor deposition layer c, and further adhering a moisture absorbent a1 to the back surface 14 to form the moisture absorption layer a. By providing the metal vapor deposition layer c, the thermal conductivity of the flat plate member A can be increased.
As the flat plate member A, a material in which the hygroscopic layer a is formed by adhering the hygroscopic agent a1 to the back surface 14 of the thin film 10 provided with the metal vapor deposition layer c in advance may be used.
The thin film 10 is preferably a PET film having a thickness (plate thickness) of 30 to 100 μm. Typically, the thickness (plate thickness) of the thin film 10 is particularly preferably 60 to 100 μm.
The flat plate member A preferably has a thickness (plate thickness) of 50 to 250 μm. Typically, the thickness (plate thickness) of the flat plate member A is particularly preferably 100 to 150 μm.
If the thickness of the flat plate member A is too thin, the strength is weak, and if it is too thick, the humidity control element D is large and heavy.

In this example, the corrugated member C is a corrugated member C obtained by corrugating the thin film 10.
In order to corrugate the thin film 10, for example, two corrugated rolls (not shown) each having a corrugated shape are arranged in parallel to the axial direction of the corrugated roll, and the peaks and valleys of the corrugated roll are further arranged. The thin film 10 may be guided to the corrugated portion of the two corrugated rolls and molded into a waveform.
As the corrugated member C, a commercially available corrugated material may be used.

In this example, the corrugated plate member B is formed by adhering the hygroscopic agent a1 to both surfaces of the corrugated plate member C to form the hygroscopic layer a.
Moreover, it is preferable that the corrugated sheet member B is 70-300 micrometers in thickness (plate thickness). Typically, the thickness (plate thickness) of the corrugated plate member B is particularly preferably 120 to 200 μm.
If the corrugated member B is too thin, the strength is weak, and if it is too thick, the humidity control element D is large and heavy.

In this example, the thickness of the corrugated member B or the corrugated member C (thickness including ridges) can be 6 mm, for example. Typically, it is adjusted to about 3 to 10 mm. If the height is too low, when configured as the humidity control element D, the pressure loss of the ventilation of the entire humidity control element D becomes too large, which is not preferable. If the height is too large, the area contributing to moisture absorption and heat exchange becomes too small in addition to the size of the humidity control element D, which is not preferable.
Moreover, the distance on the plate | board surface of the corrugated sheet member B with the adjacent peak part of the corrugated sheet member B (length corresponding to 1/2 of the wave wavelength of the corrugated sheet) can be 3 mm, for example. Typically, it is adjusted to about 2 to 5 mm. If the distance is too close, when configured as the humidity control element D, the pressure loss of the ventilation of the entire humidity control element D becomes too large, which is not preferable. If the distance is too large, the area contributing to moisture absorption and heat exchange with respect to the size of the humidity control element D becomes too small, which is not preferable.

[Hygroscopic agent]
In this example, the hygroscopic agent a1 is made of a polyacrylic acid resin as a main component and formed into a granular shape.
The polyacrylic acid-based resin has a hydrophilic carboxyl group and exhibits high water absorption by incorporating a large number of water molecules into the network structure to form a gel structure.

As for the polyacrylic acid-type resin shape | molded into the particle | grains used as the hygroscopic agent a1, it is preferable that the average particle diameter of the particle | grain is 20-200 micrometers at the time of drying and a moisture absorption state, and it is more preferable that it is 30-100 micrometers.
If the particle diameter of the polyacrylic acid resin is too small, the particles are buried in the moisture absorption layer a (coating film), cannot contact the air passing through the gas flow path 1, and cannot absorb or release moisture.
If the particle diameter of the polyacrylic resin is too large, it will protrude greatly from the moisture absorption layer a. If it does so, it will become easy to detach | leave from the moisture absorption layer a by the distortion accompanying the volume change (expansion / shrinkage) of the polyacrylic acid-type resin accompanying moisture absorption or moisture release, and it will become unable to function as the moisture absorbent a1.

As a specific example of the hygroscopic agent a1, for example, Tuftic (registered trademark) HU-750P (trade name) manufactured by Nippon Exlan Industry Co., Ltd. can be used.
Whether or not the main component is a polyacrylic acid resin is determined by the ratio of the polyacrylic acid resin contained in the resin raw material that functions as a moisture absorbent excluding various additives.
As the hygroscopic agent a1, other general water-absorbing resins used for disposable diapers, cold insulation agents and the like can also be widely used.

[Binder]
The binder b contains a urethane resin as a main component. As this urethane resin, what was synthesize | combined by using a polyol and bifunctional isocyanate as a raw material can be used.
This urethane resin can be obtained, for example, by removing the dispersion medium of the urethane resin emulsion by drying. As a specific example, for example, Superflex E-2000 (trade name), which is an aqueous urethane resin manufactured by Daiichi Kogyo Seiyaku Co., Ltd., can be used as the urethane resin emulsion.

[Manufacturing method of humidity control element D]
The manufacturing method of the humidity control element according to the embodiment of the present invention is a PET (resin) that is formed in a flat plate shape and has a metal vapor deposition layer c on its surface 13 (second surface) as shown in FIGS. A pair of thin films 10 (first plate-like members) made of a composite sheet 11 with the surfaces 13 facing each other so that the surfaces 13 are masked with each other to form an integrated composite sheet 11, and containing a moisture absorbent a1 The composite sheet 11 is dipped in the liquid 21 (first coating liquid) and then pulled up to form the moisture absorbing layer a (coating film) of the coating liquid 21 on the back surface 14 of the thin film 10, and then the composite sheet 11 is peeled off to form the moisture absorbing layer. a step of obtaining a flat plate member A (single-side coated plate member) having a back surface 14 (first surface) having a and a front surface 13 not having a moisture absorption layer a, and a corrugated plate member C made of resin formed in a corrugated shape After immersing (second plate-like member) in coating liquid 21 (second coating liquid) The corrugated sheet member B having a moisture absorption layer a on both sides of the corrugated sheet member C (double-sided coated sheet member) is bonded to the back surface 14 of the flat sheet member A and the peak portion Ba of the corrugated sheet member B. The process of carrying out. And it has the process of adhere | attaching the surface 13 of the flat plate member A, and the peak part Ca of the corrugated sheet member C further.
Here, the thin film 10 is composed of a plate member mainly composed of polyester resin, the corrugated sheet member C is composed of a plate member mainly composed of polyester resin, and the hygroscopic agent a1 is mainly composed of polyacrylic resin. Consists of components as components,
The binder b of the coating liquid 21 is composed of a resin material whose main component is a urethane emulsion.

  Hereinafter, a specific example of manufacturing the humidity control element D will be described.

[Adjustment of coating liquid]
Prepare urethane emulsion (E-2000: Superflex (trade name), which is an aqueous urethane resin manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), which is the main raw material for binder b, and use modified alcohol (AP-7: Nippon Alcohol Sales). Dilute slowly with stirring with Solmix (registered trademark). Furthermore, polyhydric acid resin (HU-750P: Tuftic (registered trademark) manufactured by Nippon Exlan Industry Co., Ltd., particle size 50 μm) as a moisture absorbent a1 is added to this diluted solution in an amount of 10 to 30 parts per 100 parts by weight of the coating solution. The coating liquid 21 is prepared while adding parts by weight in small portions and slowly stirring and dispersing.

[Single-side coating step (step for obtaining flat plate member A)]
As shown in FIG. 6, a pair of flat PET films (thin film 10) having the same shape and having a metal vapor deposition layer c on the surface 13 and having a thickness of 75 μm, with the surfaces 13 facing each other, respectively. A pair of thin films 10 are fixed to each other with a commercially available tape 12 so as to mask the surfaces 13 of each other, and an integrated flat plate-like composite sheet 11 is produced. Thus, when making the composite sheet 11, it fixes so that the perimeter edge part may be covered with the tape 12, as shown in FIG.
Thus, by covering the whole grain edge part of the composite sheet 11 with the tape 12, when the composite sheet 11 is immersed in the coating liquid 21, the coating liquid 21 infiltrates between the pair of surfaces 13 to be superimposed. Can be prevented.
As this tape 12, for example, a polytetrafluoroethylene film can be used as a substrate, and a silicone-based adhesive can be used as an adhesive. As a specific example, for example, PTFE tape (model: 5490) manufactured by 3M can be used.

  Next, as shown in FIG. 7, the composite sheet 11 is immersed in the coating liquid 21 stored in the coating tank 20 in advance at a slow speed v <b> 1 and then maintained for a predetermined time t <b> 1 in the immersed state. Then, after the composite sheet 11 is lifted from the coating liquid 21 at a slow and constant speed v2 to form a coating film (dip coating), the coating film is heated at 90 ° C. in a thermostatic bath (not shown). Let dry for 20 minutes. If it does so, the moisture absorption layer a in which the hygroscopic agent a1 was adhere | attached through the binder b on both surfaces of the composite sheet 11 can be formed.

  Then, as shown in FIG. 8, when the tape 12 of the composite sheet 11 on which the moisture absorption layer a is formed and peeled again into two films, each has a metal vapor deposition layer c on the surface of the thin film 10, Furthermore, the flat plate member A which has the moisture absorption layer a on the back surface can be obtained.

  If the speed v1 is too slow, the production time (application time) becomes longer and the productivity is lowered, which is not preferable. If it is too early, air is entrained together with the composite sheet 11, and the entrained air is attached to the back surface 14 as bubbles, and this bubble inhibits the contact between the coating liquid 21 and the back surface 14, for example, a moisture absorption layer a. In some cases, a non-uniform flat plate member A in which a part of the flat plate member is missing may be obtained.

The time t1 may be set appropriately. If the time t1 is set to be long, for example, even if the speed determined as the speed v1 is too fast and bubbles are attached to the composite sheet 11, while maintaining the immersed state, The bubbles may be removed, and the contact inhibition between the coating liquid 21 and the back surface 14 may be eliminated.
In this example, in order to promote the removal of bubbles, the composite sheet 11 is moved alternately up and down at intervals of 10 mm per second, such as every 10 seconds, while maintaining the immersed state. Also good. By doing in this way, when intermittently moving up and down, the bubbles attached to the composite sheet 11 are stimulated with kinetic energy, and the separation of the bubbles is promoted.
However, if the time t1 is set too long, the manufacturing time (application time) becomes long and the productivity is lowered, which is not preferable. In this manufacturing method, the time t1 may be about 5 seconds to 500 seconds.

[Double-sided coating process (process for obtaining corrugated sheet member B)]
First, a corrugated sheet member in which the same liquid mixture as in the single-sided coating step is dip-coated on a corrugated sheet member C made of PET having a thickness (plate thickness) of 75 μm, which has been processed into a corrugated shape in advance, and a hygroscopic layer a is formed on both surfaces. B.
Specifically, the ridge direction of the corrugated sheet member C is set as a dipping direction, maintained for a predetermined time t2 in the dipped state, and lifted at a slow and constant speed v4 to form a coating film (dip coating). Then, the moisture absorption layer a to which the moisture absorbent a1 was adhered was formed on the corrugated plate member B by drying the coating film in a thermostatic bath at 90 ° C. for 20 minutes.

As described above, when the ridge direction of the corrugated sheet member C is set as the dipping direction, the coating liquid does not stay in the unevenness of the ridge of the corrugated sheet member C. Therefore, in the single-side coating process, a flat composite sheet is formed. The speed v3, time t2, and speed v4 can be set in substantially the same manner as in the case where the moisture absorption layer a is formed on 11.
That is, in this embodiment, when the corrugated plate member C is immersed in the coating liquid 21 or when the corrugated sheet member C is pulled up from the coating liquid 21, the peak direction of the corrugated sheet member C is set as the immersion direction. Approximately similar to speed v1, time t2 can be set approximately similar to time t1, and speed v4 can be set approximately similar to speed v2.
In addition, when the direction different from the peak direction of the corrugated plate member C (for example, the direction orthogonal to the peak direction of the corrugated plate member C) is the immersion direction, the coating liquid stays on the concave and convex portions of the corrugated plate member C. Therefore, it is necessary to set a speed v3, a time t2, and a speed v4 that are significantly different from the case where the moisture absorption layer a is formed on the flat composite sheet 11 in the single-side coating process.

[Formation process of humidity control part DS]
In this step, as shown in FIGS. 2 to 4, the gas separated by the back surface 14 of the flat plate member A and the corrugated plate member B is bonded to the back surface 14 of the flat plate member A and the peak portion of the corrugated plate member B. The humidity control section DS having the flow path 1 is formed.
In this example, the corrugated plate member B (B1) is disposed between the flat plate member A1 and the flat plate member A2 with the back surfaces 14 of the pair of flat plate members A (A1, A2) facing each other, and the back surface 14 and the peak portion Ba of the corrugated plate member B (B1) are bonded with a heat conductive adhesive, and the gas flow path 1 partitioned by the rear surface 14 of the flat plate member A (A1, A2) and the corrugated member B is formed. A plurality of humidity control sections DS are formed.

In this example, the back surface 14 and the peak portion Ba are bonded with a heat conductive adhesive as follows. First, an appropriate amount of adhesive is applied to the entire length of the top (peak) of the peak portion Ba. Then, in a state where the back surfaces 14 of the pair of flat plate members A (A1, A2) are opposed to each other, the corrugated plate member B (B1) coated with an adhesive on the peak portion Ba is disposed and sandwiched between the flat plate members A. The back surface 14 and the peak portion Ba of (A1, A2) are brought into contact with each other so that the back surface 14 and the peak portion Ba are connected via an adhesive. The corrugated plate member B (B1) is pressed from each of the flat plate member A1 and the flat plate member A2, and the adhesive is solidified by a predetermined method according to the adhesive to complete the bonding.
As the thermally conductive adhesive, for example, an adhesive based on an epoxy resin can be used. As a specific example, for example, a thermally conductive epoxy adhesive (model: EW2070) manufactured by 3M can be used.
In order to bond the flat plate member A and the corrugated plate member B, various known means such as fusion can be applied in addition to bonding with a heat conductive adhesive.

[Formation process of cooling part CS]
In this step, as shown in FIGS. 2 to 4, the surface 13 of the flat plate member A and the crest portion Ca of the corrugated plate member C are bonded, and the surface 13 of the flat plate member A and the corrugated plate member C are partitioned. A cooling part CS having the gas flow path 2 is formed.
In this example, in a state where the surfaces 13 of the pair of flat plate members A (A2, A3) are opposed to each other, the corrugated plate member C (C1) is disposed and sandwiched therebetween, and the crests of the surface 13 and the corrugated plate member C are sandwiched therebetween. Ca is bonded with a heat conductive adhesive, and a plurality of gas flow paths 2 partitioned by the surface 13 of the flat plate member A (A2, A3) and the corrugated plate member C are formed to be the cooling unit CS.

In this example, the adhesion between the surface 13 and the peak portion Ca with a heat conductive adhesive is performed as follows. First, an appropriate amount of adhesive is applied to the total length of the top (peak) of the peak portion Ca. Then, with the surfaces 13 of the pair of flat plate members A (A2, A3) facing each other, the corrugated plate member C (C1) coated with an adhesive on the peak portion Ca is disposed and sandwiched between the flat plate members A. The surface 13 and the peak portion Ba of (A2, A3) are brought into contact with each other so that the surface 13 and the peak portion Ba are connected via an adhesive. The corrugated plate member C (C1) is pressed from each of the flat plate member A2 and the flat plate member A3, and the adhesive is solidified by a predetermined method corresponding to the adhesive to complete the bonding.
As the thermally conductive adhesive, for example, an adhesive based on an epoxy resin can be used. As a specific example, for example, a thermally conductive epoxy adhesive (model: EW2070) manufactured by 3M can be used.
In order to bond the flat plate member A and the corrugated plate member C, various known means such as fusion can be applied in addition to bonding with a heat conductive adhesive.

[Formation of humidity control element D]
The cooling part CS is further formed on the surface 13 of the flat plate member A (A2) of the humidity control part DS formed in the process of forming the humidity control part DS, so that the flat plate member A (A2, A3) and the corrugated plate member C are formed. By forming the cooling unit CS with (C1), the cooling unit CS can be stacked and disposed on the humidity control unit DS. Further, the humidity control section DS is formed on the back surface 14 of the flat plate member A (A3) of the cooling section CS, and the humidity control section DS is formed by the flat plate members A (A3, A4) and the corrugated plate member B (B2). Then, the humidity control element D having an arbitrary number of layers is formed as shown in FIG.

  At this time, the corrugated plate member B (B1,...) Disposed in the humidity control unit DS and the corrugated plate member C (C1,...) Disposed in the cooling unit CS have wavefront waves. The humidity control unit DS and the cooling unit CS are alternately stacked in a state of being orthogonal to each other. In this way, the gas flow path 1 and the gas flow path 2 are alternately arranged for each adjacent stage in a direction in which the flow directions in a plan view intersect each other.

  That is, as shown in FIG. 1, each of the pair of humidity control elements D1 and D2 includes a humidity control unit DS that forms a gas flow path 1 that absorbs moisture contained in the passing moisture absorption air, and the processing target air that passes. And the cooling part CS forming the gas flow path 2 as the gas flow path for receiving the heat generated by the moisture absorption in the humidity control section DS are alternately stacked for each adjacent stage while being partitioned by the flat plate member A. Configure.

[Another embodiment]
(1) In the above embodiment, as the gas flow path, the gas flow paths 1 and the gas flow paths 2 formed in directions in which the flow directions in a plan view intersect with each other are alternately arranged. The gas flow path 1 and the gas flow path 2 may be formed in the same flow direction or in opposite directions.

(2) In the above embodiment, when the composite sheet 11 is formed, the surfaces 13 are opposed to each other so that the surfaces 13 are masked with each other, and the pair of thin films 10 are formed with the commercially available tape 12. Although they are fixed to each other to form an integrated flat plate-like composite sheet 11, any method may be used as long as the thin film 10 can be overlapped with the surfaces 13 facing each other to form the integrated composite sheet 11. For example, the composite sheet 11 may be formed by applying and bonding an adhesive or a glue to the entire periphery of the end portion of the surface 13.

(3) In the above embodiment, the thin film 10 and the corrugated plate member C are PET films, but the thin film 10 and the corrugated plate member C are formed of a single resin material like a PET film. Not exclusively. For example, instead of depositing the metal deposition layer c, a film in which PET and another resin are formed in two layers may be used. Such a two-layer film can be produced, for example, by coextrusion. Specifically, when the first layer is made of PET and the second layer is formed of another resin in which a filler for improving thermal conductivity is kneaded, the flat plate member A is formed in the same manner as the method for providing the metal vapor deposition layer c. The thermal conductivity of can be improved.

(4) In the above embodiment, the adhesion of the back surface 14 and the peak portion Ba with the heat conductive adhesive is first performed by applying an appropriate amount of adhesive to the total length of the top (peak) of the peak portion Ba, In a state where the back surfaces 14 of the pair of flat plate members A (A1, A2) are opposed to each other, a corrugated plate member B (B1) coated with an adhesive on the mountain portion Ba is disposed and sandwiched between the flat plate members A (A1). , A2) The back surface 14 and the peak portion Ba are brought into contact with each other and the back surface 14 and the peak portion Ba are connected to each other via an adhesive. It is not restricted to what was illustrated. For example, after the back surface 14 of one flat plate member A and the peak portion Ba of the corrugated plate member B (B1) are brought into contact with each other and the back surface 14 and the peak portion Ba are connected via an adhesive, The back surface 14 of the other flat plate member A and the crest portion Ba of the corrugated plate member B (B1) may be brought into contact with each other to connect the back surface 14 and the crest portion Ba via an adhesive.

(5) In the above embodiment, the adhesion of the surface 13 and the mountain portion Ca with the thermally conductive adhesive is first performed by applying an appropriate amount of adhesive to the total length of the top (peak) of the mountain portion Ca, In a state where the surfaces 13 of the pair of flat plate members A (A2, A3) are opposed to each other, a corrugated plate member C (C1) coated with an adhesive on the crest portion Ca is disposed and sandwiched between the flat plate members A (A2). , A3) The back surface 14 and the peak portion Ba are brought into contact with each other and the back surface 14 and the peak portion Ba are connected to each other via an adhesive. It is not restricted to what was illustrated. For example, after bringing the surface 13 of one flat plate member A and the peak portion Ba of the corrugated plate member C (C1) into contact with each other and connecting the surface 13 and the peak portion Ba via an adhesive, The surface 13 of the other flat plate member A and the peak portion Ba of the corrugated plate member C (C1) may be brought into contact with each other to connect the surface 13 and the peak portion Ba via an adhesive.

(6) In the above-described embodiment, each of the pair of humidity control elements D1 and D2 includes the humidity control unit DS that forms the gas flow path 1 that absorbs moisture contained in the passing moisture absorption air and the processing target air that passes. The cooling part CS that forms the gas flow path 2 as a gas flow path for receiving heat generated by moisture absorption in the humidity control part DS is alternately stacked for each adjacent stage while being partitioned by the flat plate member A However, when regenerating the humidity control section DS, the gas flow path 1 of the humidity control section DS is a flow path for releasing moisture absorbed in the passing moisture release air (regeneration air). And the gas flow path 2 of the cooling unit CS functions as a gas flow path through which heating air that supplies heat necessary for dehumidification in the humidity control unit DS is passed by the passing moisture release air. be able to.

That is, when the humidity control unit DS is regenerated, the humidity control elements D1 and D2 allow the moisture release air to flow from the specific direction to the humidity control unit DS as viewed in the stacking direction of the humidity control unit DS and the cooling unit CS. The dehumidifying heat necessary for dehumidification in the humidity control unit DS can be supplied by allowing the heating air to flow from the direction orthogonal to the specific direction to the cooling unit CS in a state where the moisture is released. Yes.
At this time, in the cooling unit CS, the heat absorption in the humidity control unit DS is efficiently transmitted from the cooling unit CS by the metal vapor deposition layer c.

(7) It is obvious that the humidity control element D can be applied not only to the air conditioning system of FIG. 1 but also to various known air conditioning systems.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  The method for manufacturing a humidity control element according to the present invention can be used, for example, as a method for manufacturing the humidity control element D used in a desiccant air conditioning system.

10: Thin film (first plate member)
11: Composite sheet 13: Front surface 14: Back surface 21: Coating liquid (first coating liquid, second coating liquid)
A: Flat plate member (single-side coated plate member)
A1: Flat plate member (single-side coated plate member)
A2: Flat plate member (single-side coated plate member)
A3: Flat plate member (single-side coated plate member)
B: Corrugated plate member (double-sided coated plate member)
Ba: Mountain portion C: Corrugated plate member (second plate member)
Ca: Yamabe D: Humidity control element D1: Humidity control element D2: Humidity control element a: Hygroscopic layer (coating film)
a1: Hygroscopic agent b: Binder c: Metal vapor deposition layer

Claims (6)

A pair of resin-made first plate-like members formed in a flat plate shape are made into an integral composite sheet with their surfaces facing each other, and the composite sheet is dipped in a first coating liquid containing a hygroscopic agent and then pulled up After forming the coating film of the first coating liquid on the back surface of the first plate member, the composite sheet is peeled off, and the first surface having the coating film and the second surface not having the coating film Obtaining a single-side coated plate member having
A double-sided coated plate member having a coating film on both sides of the second plate-like member, which is formed by immersing the resin-made second plate-like member formed in a corrugated shape in a second coating liquid containing a hygroscopic agent And obtaining
The manufacturing method of a humidity control element which has the process of adhere | attaching said 1st surface of the said single-sided application board member, and the peak part of the said double-sided application board member.   The method for manufacturing a humidity control element according to claim 1, further comprising a step of bonding the second surface of the single-side coated plate member and a peak portion of the second plate-shaped member. In the step of bonding the first surface of the single-side coated plate member and the peak portion of the double-side coated plate member,
In a state where the first surfaces of the pair of single-sided coating plate members are opposed to each other, the double-sided coating plate member is disposed between the pair of single-sided coating members, and the first surface and the double-sided coating plate, respectively. The method for manufacturing a humidity control element according to claim 1, further comprising a step of adhering a peak portion of the member. In the step of bonding the second surface of the single-side coated plate member and the peak portion of the second plate-shaped member,
In a state where the second surfaces of the pair of single-sided application plate members are opposed to each other, the second plate-like member is disposed between the pair of single-sided application members, and each of the second surface and the second surface is arranged. The method for manufacturing a humidity control element according to claim 2, further comprising a step of bonding the peak portion of the plate-like member. The first plate-like member is composed of a plate member mainly composed of a polyester-based resin,
The second plate-like member is composed of a plate member mainly composed of a polyester-based resin,
The hygroscopic agent is composed of a member mainly composed of polyacrylic acid resin,
The method for manufacturing a humidity control element according to any one of claims 1 to 4, wherein the binder of the first coating liquid and the second coating liquid is made of a resin material having a urethane emulsion as a main component.   The manufacturing method of the humidity control element as described in any one of Claims 1-5 which has a metal vapor deposition layer in said 2nd surface.

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