WO2023223455A1 - Total heat exchange element, total heat exchanger, and production method of total heat exchange element - Google Patents

Total heat exchange element, total heat exchanger, and production method of total heat exchange element Download PDF

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Publication number
WO2023223455A1
WO2023223455A1 PCT/JP2022/020653 JP2022020653W WO2023223455A1 WO 2023223455 A1 WO2023223455 A1 WO 2023223455A1 JP 2022020653 W JP2022020653 W JP 2022020653W WO 2023223455 A1 WO2023223455 A1 WO 2023223455A1
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WIPO (PCT)
Prior art keywords
total heat
heat exchange
partition
exchange element
moisture absorbent
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PCT/JP2022/020653
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French (fr)
Japanese (ja)
Inventor
一 外川
俊明 林
啓子 柴田
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三菱電機株式会社
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Priority to PCT/JP2022/020653 priority Critical patent/WO2023223455A1/en
Publication of WO2023223455A1 publication Critical patent/WO2023223455A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present disclosure relates to a total heat exchange element, a total heat exchanger, and a method for manufacturing a total heat exchange element.
  • a ventilation method that suppresses energy loss during indoor air conditioning, heating, and dehumidification a ventilation method that performs heat exchange between the supply air flow and the exhaust air flow is known.
  • total heat exchange is effective, in which both temperature (sensible heat) and humidity (latent heat) are exchanged between the supply air flow and the exhaust air flow.
  • the total heat exchange element As a total heat exchange element for performing total heat exchange, the total heat exchange element has a partition member and a spacing member that maintains the interval between the partition members, and the partition member and the spacing member are bonded together with an adhesive member. It has been known.
  • the spacing member is formed into a substantially wavy shape by corrugating, for example.
  • the air supply flow path and the exhaust flow path are formed as mutually independent flow paths with the partition member in between, and the air supply flow flowing through the air supply flow path is controlled by the partition member and the spacing member.
  • a total heat exchange takes place between the exhaust gas flow and the exhaust flow flowing through the exhaust flow path. Therefore, by ventilating indoor air using a total heat exchanger including a total heat exchange element, it is possible to suppress the loss of energy spent on indoor air conditioning and dehumidification.
  • total heat exchangers With the spread of such total heat exchangers, for example, due to the desire to increase the amount of humidification inside buildings in winter, total heat exchangers not only recover sensible heat, but also collect heat from the humidified air contained in the exhaust flow. There is a desire to increase the amount of moisture recovered in the air, and there is a need to improve not only temperature exchange efficiency but also humidity exchange efficiency.
  • a total heat exchanger In addition, in summer cooling conditions, in order to reduce the energy required for latent heat processing (dehumidification) by air conditioners, a total heat exchanger is installed, and instead of bringing high-humidity outdoor air directly into the room, the total heat exchange element uses a Ventilation designs have begun to take into consideration the reduction of ventilation load by removing moisture into the exhaust flow path. In such an environment, high humidity exchange efficiency is required.
  • the partition member has high moisture permeability.
  • the partition member generally contains a moisture absorbent in order to impart moisture permeability.
  • a moisture absorbent for example, a water-soluble moisture absorbent such as a deliquescent alkali metal salt or alkaline earth metal salt such as lithium chloride or calcium chloride is used.
  • Patent Document 1 discloses a paper base material mainly composed of cellulose fibers, and one or more types selected from the group consisting of calcium chloride, magnesium chloride, and lithium chloride held in the paper base material, and a flame retardant.
  • a partition member that does not contain a flame retardant, a paper base material mainly composed of cellulose fibers, and one or more types selected from the group consisting of calcium chloride and magnesium chloride held in the paper base material, and does not contain any other flame retardant.
  • a heat exchanger using the member is described. This heat exchanger does not lose its moisture absorption effect over time, allowing efficient heat exchange over a long period of time.
  • the present disclosure has been made to solve the above problems, and provides a total heat exchange element, a total heat exchanger, and a total heat exchange element that can ensure workability of a partition member while ensuring humidity exchange performance.
  • the present invention provides a method for manufacturing.
  • the total heat exchange element according to the present disclosure includes a plurality of partition members to which no moisture absorbent has been added in advance and a water-soluble moisture absorbent to which a water-soluble moisture absorbent has been added, and maintains a distance between adjacent partition members.
  • a total heat exchanger includes the above-mentioned total heat exchange element, a supply air blower that generates an air flow in a first flow path formed in the total heat exchange element, and a total heat exchange element formed in the total heat exchange element. and an exhaust blower that generates airflow in a second flow path independent of the first flow path.
  • a method for manufacturing a total heat exchange element includes a step of bonding a partition member to which no moisture absorbent is added and a wave-shaped spacing member to which a water-soluble moisture absorbent is added to form a partition unit. , the step of stacking the partition units so that the directions of the undulations of the spacing members intersect layer by layer, and adhering adjacent partition units.
  • the moisture absorbent is added to the spacing member and transferred to the partition member, workability of the partition member can be ensured while ensuring humidity exchange performance.
  • FIG. 1 is a perspective view of a total heat exchange element showing Embodiment 1.
  • FIG. FIG. 3 is a cross-sectional view showing the configuration of a partition member and a spacing member of the total heat exchange element showing Embodiment 1.
  • FIG. FIG. 2 is a cross-sectional view showing the configuration of the partition member and the spacing member of the total heat exchange element according to Embodiment 1 before they are bonded together.
  • FIG. 2 is a cross-sectional view showing the configuration of a partition unit of the total heat exchange element showing Embodiment 1.
  • FIG. FIG. 2 is a schematic diagram illustrating a simplified configuration of a total heat exchanger according to a second embodiment.
  • FIG. 1 is a perspective view of a total heat exchange element 1 in the first embodiment.
  • FIG. 2 is a cross-sectional view showing the structure of the partition member 10 and the spacing member 12 of the total heat exchange element 1, and is an extracted view showing the partition member 10 adhered to both sides of the spacing member 12.
  • the total heat exchange element 1 includes a partition member 10 and a spacing member 12.
  • the total heat exchange element 1 has a structure in which a partition member 10 and a spacing member 12 are stacked in multiple layers.
  • the partition member 10 has, for example, a single layer structure of specially processed paper, and is formed into a square or diamond-shaped flat plate. It is desirable that the thickness of the partition member 10 be made thin in consideration of moisture permeability, but if it is made too thin, the tensile strength during processing will be low and it will be easily torn during processing. Considering moisture permeability and tensile strength, the thickness of the partition member 10 is preferably 10 to 50 ⁇ m. As the base material of the partition member 10, for example, cellulose fiber is used. Further, a moisture absorbent is not added to the partition member 10 in advance.
  • the spacing member 12 maintains the spacing between adjacent partition members 10 and forms a flow path between the partition members 10.
  • the spacing member 12 is formed, for example, in a corrugated shape.
  • the corrugated shape is a wavy shape composed of peaks and valleys. In a state where the spacing member 12 is sandwiched between the adjacent partition members 10, the distance between the adjacent partition members 10 is maintained by the peaks and valleys of the corrugated spacing member 12, and the distance between the adjacent partition members 10 is maintained.
  • a space serving as a flow path is formed between the members 10.
  • the spacing member 12 may be any member as long as it can maintain the spacing between adjacent partition members 10 at a predetermined spacing, and may be formed in, for example, a rectangular wave shape or a triangular wave shape.
  • the spacing member 12 is arranged so that the directions of the wave lines of the spacing members 12 intersect layer by layer.
  • the angle at which the directions of the wave lines intersect is set to 90° or an angle close to it.
  • the spacing member 12 has, for example, a single-layer structure made of specially processed paper.
  • the thickness of the spacing member 12 is, for example, 50 to 200 ⁇ m.
  • a water-soluble moisture absorbent is added to the spacing member 12.
  • the water-soluble hygroscopic agent preferably has a strong hygroscopic effect, such as lithium chloride or calcium chloride.
  • a hygroscopic agent having a strong hygroscopic effect as described above, the humidity exchange efficiency and the humidity fin effect can be enhanced.
  • the amount of moisture absorbent added to the spacing member 12 is from 2 to 10 g/m 2 , preferably from 3 to 7 g/m 2 .
  • the spacing member 12 is bonded to the partition member 10.
  • the total heat exchange element 1 further includes an adhesive member 22.
  • the adhesive member 22 adheres the partition member 10 and the spacing member 12.
  • the adhesive member 22 is preferably a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water. By doing so, the water-soluble moisture absorbent can be smoothly moved from the spacing member 12 to the partition member 10.
  • adhesives include vinyl acetate emulsion adhesives, ethylene vinyl acetate copolymer (EVA) adhesives, and polyurethane-containing vinyl acetate adhesives.
  • FIG. 3 is a sectional view showing the configuration of the partition member 10 and the spacing member 12 of the total heat exchange element 1 before they are bonded together.
  • FIG. 4 is a sectional view showing the configuration of the partition unit 24 of the total heat exchange element 1.
  • the partition member 10 and the spacing member 12 are bonded together using a corrugating machine to produce a partition unit 24 as shown in FIG. 4.
  • the moisture absorbent is added only to the spacing member 12, and the moisture absorbent is added to the partition member 10.
  • an adhesive member 22 is applied to the ridge of the spacing member 12 formed into a wave shape, and the partition member 10 and the spacing member 12 are bonded together and integrated. As a result, the partition unit 24 shown in FIG. 4 is manufactured.
  • the moisture absorbent added to the spacing member 12 is diffused into the partition member 10 through the bonded portion between the partition member 10 and the spacing member 12, that is, the adhesive member 22. and move.
  • the moisture absorbent is present in the partition member 10 (represented by hatching in FIG. 4), and the moisture absorbent is present in the entire partition unit 24.
  • the moisture absorbent is added only to the spacing member 12.
  • the moisture absorbent diffuses inside and on the surface of the adhesive member 22, moves, and is easily moved to the partition member 10 after being bonded. Thereby, smooth movement of the moisture absorbent to the partition member 10 can be promoted.
  • the moisture absorbent added to the spacing member 12 moves to the partition member 10, and when the moisture absorbent is contained in the partition member 10, the first airflow 18 passing through the partition member 10 and the second Humidity exchange between the airflow 20 and the airflow 20 is facilitated. Furthermore, the fact that the moisture absorbent remains in the spacing member 12 is also an important factor in promoting humidity exchange.
  • the spacing member 12 containing a moisture absorbing agent adsorbs moisture from the air flowing through the flow path in the spacing member 12, the moisture content in the spacing member 12 increases, and the moisture flow inside the spacing member 12 increases. Moisture moves more easily. In this case, the spacing member 12 acts as a humidity fin for the partition member 10, and the same effect as increasing the humidity exchange area that the partition member 10 was responsible for can be obtained.
  • the partition units 24 are stacked one by one so that the directions of the wave lines of the spacing members 12 intersect, and adjacent partition units 24 are bonded.
  • the partition units 24 are, for example, rotated by 90 degrees, stacked, and bonded.
  • the bonding member 22 is used to bond them together. By repeating this process multiple times, a total heat exchange element 1 as shown in FIG. 1 can be manufactured.
  • the total heat exchange element 1 includes a plurality of partition members 10 to which no moisture absorbent is added in advance, a water-soluble moisture absorbent added, and adjacent partition members 10 to which a water-soluble moisture absorbent is added. 10, a flow path is formed between the partition members 10, and a gap holding member 12 is bonded to the partition member 10. The water-soluble moisture absorbent is transferred from the spacing member 12 to the partition member 10 via the adhesive portion of the spacer.
  • the total heat exchange element 1 further includes an adhesive member 22 that adheres the partition member 10 and the spacing member 12, and the adhesive member 22 is a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water. It is a drug.
  • the adhesive member 22 is a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water. It is a drug.
  • the water-soluble moisture absorbent contains at least one of lithium chloride and calcium chloride.
  • lithium chloride or calcium chloride which are hygroscopic agents with a strong hygroscopic effect, the humidity exchange efficiency and the humidity fin effect can be enhanced.
  • the spacing member 12 includes cellulose fibers. In this way, by using cellulose fibers for the spacing member 12, it is possible to easily add a water-soluble material to the spacing member 12 because cellulose fiber is a hydrophilic material. Further, since the capillary effect of the spacing member 12 can be enhanced to improve the diffusivity, the humidity movement effect within the spacing member 12 can be enhanced.
  • the spacing member 12 is formed in a corrugated shape. By forming the spacing member 12 in a wave-like shape composed of such peaks and troughs, it is possible to create a structure in which it is easy to form an air passage between the partition members 10, and the spacing member 12 can have a shape that easily produces a fin effect.
  • the method for manufacturing the total heat exchange element 1 is to bond the partition member 10 to which no moisture absorbent is added and the wave-shaped spacing member 12 to which a water-soluble moisture absorbent is added.
  • the method includes a step of manufacturing the partition unit 24, and a step of stacking the partition units 24 layer by layer so that the directions of the wave lines of the spacing member 12 intersect, and bonding adjacent partition units 24. .
  • the partition unit 24 by producing the partition unit 24 by bonding the partition member 10 to which no moisture absorbent is added and the spacing member 12 to which a water-soluble moisture absorbent is added, the moisture absorbent added to the spacing retention member 12 can be made. The moisture absorbent is diffused and moved to the partition member 10 via the bonded portion between the partition member 10 and the spacing member 12, and a portion of the moisture absorbent added to the spacing member 12 remains on the spacing member 12 as it is. Thereby, the moisture absorbent remaining in the spacing member 12 can enhance the humidity fin effect of the spacing member 12, and the moisture absorbent transferred to the partition member 10 can improve the moisture permeability of the partition member 10.
  • the bonding member 22 when bonding the partition units 24 to each other, the bonding member 22 was used for bonding.
  • the adhesive member 22a that adheres the partition member 10 and the spacing member 12 when manufacturing the partition unit 24, and the adhesive member 22b that adheres the partition units 24 to each other are both as described above.
  • a water-based adhesive is preferred, but the materials may be the same or different.
  • the same adhesive as the adhesive member 22a may be used for the adhesive member 22b.
  • the productivity of the partition unit 24 can be ensured (moisture absorption (If the amount of the agent added is too large, it tends to soften.)
  • it can be used for performance adjustment such as improving the humidity exchange performance after assembly as the total heat exchange element 1.
  • FIG. 5 is a schematic diagram showing a simplified configuration of total heat exchanger 100 in this embodiment. Note that, in this embodiment, descriptions of parts similar to those in Embodiment 1 will be omitted.
  • the total heat exchanger 100 in this embodiment includes the total heat exchange element 1 described in Embodiment 1, a supply air blower 116, and an exhaust air blower 118.
  • the total heat exchange element 1 is housed in a rectangular parallelepiped-shaped housing 102 that the total heat exchanger 100 has.
  • the housing 102 is provided with an indoor suction port 104 and an air outlet 106, an outdoor air suction port 108 and an air outlet 110, an air supply flow path 112, and an exhaust air flow path 114. It is being
  • the indoor suction port 104 and the air outlet 106 are provided on one of the opposing sides of the housing 102, and the outdoor air suction port 108 and the air outlet 110 are provided on the other opposing side surface of the housing 102. There is.
  • the air supply flow path 112 is a flow path for supplying outdoor air indoors, and connects the outdoor air inlet 108 and the indoor air outlet 106 to the first flow path 14 of the total heat exchange element 1. This is a flow path that connects the
  • the exhaust flow path 114 is a flow path for exhausting indoor air to the outdoors, and connects the indoor air inlet 104 and the outdoor air outlet 110 to the second flow path 16 of the total heat exchange element 1. This is a flow path that connects the
  • the air supply blower 116 generates an air flow in the first flow path 14 of the total heat exchange element 1.
  • the first flow path 14 communicates with the air supply flow path 112, and the air supply blower 116 passes through the first flow path 14 from the suction port 108 on the outdoor side in the air supply flow path 112. This generates a flow of air toward the air outlet 106 on the indoor side.
  • the air supply blower 116 includes, for example, a casing, an impeller housed in the casing, and an electric motor that rotates the impeller.
  • the air supply blower 116 is provided, for example, in the air supply flow path 112 between the total heat exchange element 1 and the air outlet 106 on the indoor side.
  • the exhaust blower 118 generates an airflow in the second flow path 16 of the total heat exchange element 1.
  • the second flow path 16 communicates with the exhaust flow path 114, and the exhaust blower 118 passes through the second flow path 16 from the indoor suction port 104 in the exhaust flow path 114.
  • a flow of air toward the outlet 110 on the outdoor side is generated.
  • the exhaust blower 118 includes, for example, a casing, an impeller housed in the casing, and an electric motor that rotates the impeller.
  • the exhaust blower 118 is provided, for example, in the exhaust flow path 114 between the total heat exchange element 1 and the outdoor air outlet 110.
  • the supply air blower 116 and the exhaust air blower 118 are operated. Thereby, for example, cold and dry outdoor air in winter is sucked in from the outdoor side suction port 108 as a supply air flow flowing through the supply air flow path 112, passes through the first flow path 14 of the total heat exchange element 1, The air is blown out from the air outlet 106 on the indoor side.
  • the warm and humid indoor air is sucked in from the suction port 104 on the indoor side as an exhaust flow flowing through the exhaust flow path 114, passes through the second flow path 16 of the total heat exchange element 1, and passes through the air outlet on the outdoor side. It is blown out from the outlet 110.
  • the spacing member 12 acts as an expanded moisture permeable area of the partition member 10 by absorbing and releasing moisture from each airflow and promoting the movement of moisture.
  • the supply air flow is warmed and humidified before being supplied indoors, and the exhaust air flow is cooled and dehumidified before being discharged outdoors. Therefore, by performing ventilation with the total heat exchanger 100, the indoor air can be replaced while suppressing the loss of energy for heating and cooling the indoor air conditioner.
  • the total heat exchanger 100 in this embodiment includes a total heat exchange element 1, a supply air blower 116 that generates an air flow in a first flow path 14 formed in the total heat exchange element 1, and a total heat exchange It is provided with an exhaust blower 118 that generates an air flow in a second flow path 16 formed in the exchange element 1 and independent of the first flow path 14 .
  • the humidity exchange performance of the total heat exchanger 100 can be improved.
  • a total heat exchange element a total heat exchanger, and a method for manufacturing a total heat exchange element that can ensure workability of a partition member while ensuring humidity exchange performance.

Abstract

A total heat exchange element (1) is provided with: a plurality of partition members (10) to which a moisture absorbent has not been added in advance; and a spacing member (12) to which a water-soluble moisture absorbent has been added, and which maintains a space between adjacent partition members (10), which forms a channel between partition members (10), and which is bonded to the partition members (10). The water-soluble moisture absorbent is caused to be contained in the partition member (10) by moving from the spacing member (12) to the partition member (10) via sections at which the spacing member (12) and the partition member (10) are bonded together.

Description

全熱交換素子、全熱交換器、および全熱交換素子の製造方法Total heat exchange element, total heat exchanger, and method for manufacturing total heat exchange element
　本開示は、全熱交換素子、全熱交換器、および全熱交換素子の製造方法に関する。 The present disclosure relates to a total heat exchange element, a total heat exchanger, and a method for manufacturing a total heat exchange element.
　室内の空調の冷暖房や除加湿のエネルギーの損失を抑える換気方法として、給気流と排気流との間で熱交換を行わせる換気方法が知られている。熱交換の効率を向上させるためには、給気流と排気流との間で温度（顕熱）の交換とともに湿度（潜熱）の交換も同時に行う全熱交換が有効である。 As a ventilation method that suppresses energy loss during indoor air conditioning, heating, and dehumidification, a ventilation method that performs heat exchange between the supply air flow and the exhaust air flow is known. In order to improve the efficiency of heat exchange, total heat exchange is effective, in which both temperature (sensible heat) and humidity (latent heat) are exchanged between the supply air flow and the exhaust air flow.
　全熱交換を行うための全熱交換素子として、仕切部材と、仕切部材の間隔を保持する間隔保持部材とを有し、仕切部材と間隔保持部材とが接着部材により接着された全熱交換素子が知られている。間隔保持部材は、例えばコルゲート加工によって略波形状に形成されている。このような全熱交換素子では、仕切部材および間隔保持部材によって、給気流路と排気流路とが、仕切部材を挟んで互いに独立した流路として形成されており、給気流路を流れる給気流と排気流路を流れる排気流との間で全熱交換が行われる。このため、全熱交換素子を備える全熱交換器を用いて室内の空気を換気することによって、室内の空調の冷暖房や除加湿に費やしたエネルギーの損失を抑制することができる。 As a total heat exchange element for performing total heat exchange, the total heat exchange element has a partition member and a spacing member that maintains the interval between the partition members, and the partition member and the spacing member are bonded together with an adhesive member. It has been known. The spacing member is formed into a substantially wavy shape by corrugating, for example. In such a total heat exchange element, the air supply flow path and the exhaust flow path are formed as mutually independent flow paths with the partition member in between, and the air supply flow flowing through the air supply flow path is controlled by the partition member and the spacing member. A total heat exchange takes place between the exhaust gas flow and the exhaust flow flowing through the exhaust flow path. Therefore, by ventilating indoor air using a total heat exchanger including a total heat exchange element, it is possible to suppress the loss of energy spent on indoor air conditioning and dehumidification.
　このような全熱交換器の普及に伴い、例えば、冬場の建物内での加湿量増加の要望から、全熱交換器においては、顕熱の回収のみならず、排気流に含まれる加湿空気内の湿分の回収量を増加したいという要望があり、温度交換効率の向上とともに湿度交換効率の向上が要求されている。また、夏場の冷房条件では、空調機による潜熱処理（除湿）エネルギーを低減するため、全熱交換器を設置して、室外の高湿空気をそのまま室内に入れずに、全熱交換素子によって湿度の交換を行うことで、排気流路に排湿し、換気負荷の低減を考慮した換気設計がなされるようになってきた。このような環境では、高い湿度交換効率が要求される。 With the spread of such total heat exchangers, for example, due to the desire to increase the amount of humidification inside buildings in winter, total heat exchangers not only recover sensible heat, but also collect heat from the humidified air contained in the exhaust flow. There is a desire to increase the amount of moisture recovered in the air, and there is a need to improve not only temperature exchange efficiency but also humidity exchange efficiency. In addition, in summer cooling conditions, in order to reduce the energy required for latent heat processing (dehumidification) by air conditioners, a total heat exchanger is installed, and instead of bringing high-humidity outdoor air directly into the room, the total heat exchange element uses a Ventilation designs have begun to take into consideration the reduction of ventilation load by removing moisture into the exhaust flow path. In such an environment, high humidity exchange efficiency is required.
　湿度交換効率を向上させる観点から、仕切部材の透湿性能は高いことが好ましい。このため、仕切部材には、透湿性を付与するため、一般に、吸湿剤を含有させている。吸湿剤としては、例えば、塩化リチウムや塩化カルシウム等に代表される潮解性のアルカリ金属塩やアルカリ土類金属塩等の水溶性吸湿剤が用いられる。 From the viewpoint of improving humidity exchange efficiency, it is preferable that the partition member has high moisture permeability. For this reason, the partition member generally contains a moisture absorbent in order to impart moisture permeability. As the moisture absorbent, for example, a water-soluble moisture absorbent such as a deliquescent alkali metal salt or alkaline earth metal salt such as lithium chloride or calcium chloride is used.
　特許文献１には、セルロース繊維を主成分とする紙基材と前記紙基材に保持された塩化カルシウム、塩化マグネシウム及び塩化リチウムからなる群から選択される一種以上を含み、その他に難燃剤を含まない仕切部材と、セルロース繊維を主成分とする紙基材と前記紙基材に保持された塩化カルシウム及び塩化マグネシウムからなる群から選択される一種以上を含み、その他に難燃剤を含まない間隔部材を用いた熱交換器が記載されている。この熱交換器では、経時により吸湿効果が落ちにくく、長期間効率的な熱交換が可能となっている。 Patent Document 1 discloses a paper base material mainly composed of cellulose fibers, and one or more types selected from the group consisting of calcium chloride, magnesium chloride, and lithium chloride held in the paper base material, and a flame retardant. a partition member that does not contain a flame retardant, a paper base material mainly composed of cellulose fibers, and one or more types selected from the group consisting of calcium chloride and magnesium chloride held in the paper base material, and does not contain any other flame retardant. A heat exchanger using the member is described. This heat exchanger does not lose its moisture absorption effect over time, allowing efficient heat exchange over a long period of time.
特開２０２１－５５８７３号公報JP 2021-55873 Publication
　特許文献１に記載された熱交換器では、仕切部材および間隔部材の両方に吸湿剤が含まれているため、全体の湿度吸着能力は向上すると考えられる。しかし、高い湿度交換効率を得るために薄膜化した仕切部材が吸湿により強度低下し、加工性が悪く、歩留まりが悪いという問題があった。 In the heat exchanger described in Patent Document 1, since both the partition member and the spacing member contain a moisture absorbent, the overall humidity adsorption capacity is thought to be improved. However, there have been problems in that the strength of the partition member, which has been made thin to obtain high humidity exchange efficiency, decreases due to moisture absorption, resulting in poor workability and poor yield.
　本開示は、上記のような課題を解決するためになされたもので、湿度交換性能を確保しつつ、仕切部材の加工性を確保できる全熱交換素子、全熱交換器、および全熱交換素子の製造方法を得るものである。 The present disclosure has been made to solve the above problems, and provides a total heat exchange element, a total heat exchanger, and a total heat exchange element that can ensure workability of a partition member while ensuring humidity exchange performance. The present invention provides a method for manufacturing.
　本開示に係る全熱交換素子は、予め吸湿剤が添加されていない複数の仕切部材と、水溶性の吸湿剤が添加されており、隣り合う仕切部材の間隔を保持し、仕切部材の間に流路を形成し、仕切部材に接着された間隔保持部材と、を備え、仕切部材には、間隔保持部材と仕切部材との接着部分を介して間隔保持部材から仕切部材に移動した水溶性の吸湿剤が含まれているものである。 The total heat exchange element according to the present disclosure includes a plurality of partition members to which no moisture absorbent has been added in advance and a water-soluble moisture absorbent to which a water-soluble moisture absorbent has been added, and maintains a distance between adjacent partition members. a spacing member that forms a flow path and is bonded to the partition member; Contains a moisture absorbent.
　本開示に係る全熱交換器は、上記の全熱交換素子と、全熱交換素子に形成された第一の流路に気流の流れを発生させる給気用送風機と、全熱交換素子に形成された、第一の流路とは独立した第二の流路に気流の流れを発生させる排気用送風機と、を備えるものである。 A total heat exchanger according to the present disclosure includes the above-mentioned total heat exchange element, a supply air blower that generates an air flow in a first flow path formed in the total heat exchange element, and a total heat exchange element formed in the total heat exchange element. and an exhaust blower that generates airflow in a second flow path independent of the first flow path.
　本開示に係る全熱交換素子の製造方法は、吸湿剤が添加されていない仕切部材と水溶性の吸湿剤が添加された波形状の間隔保持部材とを接着して仕切ユニットを形成する工程と、仕切ユニットを、間隔保持部材の波の目の方向が一層ずつ交差するように積層し、隣り合う仕切ユニットを接着する工程と、を備えるものである。 A method for manufacturing a total heat exchange element according to the present disclosure includes a step of bonding a partition member to which no moisture absorbent is added and a wave-shaped spacing member to which a water-soluble moisture absorbent is added to form a partition unit. , the step of stacking the partition units so that the directions of the undulations of the spacing members intersect layer by layer, and adhering adjacent partition units.
　本開示によれば、間隔保持部材に吸湿剤を添加し、仕切部材に移動させるので、湿度交換性能を確保しつつ、仕切部材の加工性を確保できる。 According to the present disclosure, since the moisture absorbent is added to the spacing member and transferred to the partition member, workability of the partition member can be ensured while ensuring humidity exchange performance.
実施の形態１を示す全熱交換素子の斜視図である。1 is a perspective view of a total heat exchange element showing Embodiment 1. FIG. 実施の形態１を示す全熱交換素子の仕切部材および間隔保持部材の構成を示す断面図である。FIG. 3 is a cross-sectional view showing the configuration of a partition member and a spacing member of the total heat exchange element showing Embodiment 1. FIG. 実施の形態１を示す全熱交換素子の仕切部材および間隔保持部材の接着前の構成を示す断面図である。FIG. 2 is a cross-sectional view showing the configuration of the partition member and the spacing member of the total heat exchange element according to Embodiment 1 before they are bonded together. 実施の形態１を示す全熱交換素子の仕切ユニットの構成を示す断面図である。FIG. 2 is a cross-sectional view showing the configuration of a partition unit of the total heat exchange element showing Embodiment 1. FIG. 実施の形態２を示す全熱交換器の構成を簡略化して示す模式図である。FIG. 2 is a schematic diagram illustrating a simplified configuration of a total heat exchanger according to a second embodiment.
　以下、添付図面を参照しながら、実施の形態について説明する。各図において同一または相当する部分には同一の符号を付している。 Hereinafter, embodiments will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are given the same reference numerals.
実施の形態１．
　図１は、実施の形態１における全熱交換素子１の斜視図である。図２は、全熱交換素子１の仕切部材１０および間隔保持部材１２の構成を示す断面図であり、間隔保持部材１２の両側に仕切部材１０が接着された状態を抜き出して示した図である。本実施の形態では、全熱交換素子１は、仕切部材１０と、間隔保持部材１２と、を備えている。全熱交換素子１は、仕切部材１０と間隔保持部材１２とが複数層に重ね合わせられた構成を有している。 Embodiment 1.
FIG. 1 is a perspective view of a total heat exchange element 1 in the first embodiment. FIG. 2 is a cross-sectional view showing the structure of the partition member 10 and the spacing member 12 of the total heat exchange element 1, and is an extracted view showing the partition member 10 adhered to both sides of the spacing member 12. . In this embodiment, the total heat exchange element 1 includes a partition member 10 and a spacing member 12. The total heat exchange element 1 has a structure in which a partition member 10 and a spacing member 12 are stacked in multiple layers.
　仕切部材１０は、例えば、特殊加工紙の単層構造を有しており、正方形や菱形の平板状に形成されている。仕切部材１０の厚さは、透湿性能を考慮すると薄膜化することが望ましいが、薄くしすぎると加工時の引張強度が小さくなり、加工時に破れやすくなる。透湿性能および引張強度を考慮すると、仕切部材１０の厚さは、１０～５０μｍが好ましい。仕切部材１０の基材としては、例えばセルロース繊維が用いられる。また、仕切部材１０には、予め吸湿剤を添加することを行っていない。 The partition member 10 has, for example, a single layer structure of specially processed paper, and is formed into a square or diamond-shaped flat plate. It is desirable that the thickness of the partition member 10 be made thin in consideration of moisture permeability, but if it is made too thin, the tensile strength during processing will be low and it will be easily torn during processing. Considering moisture permeability and tensile strength, the thickness of the partition member 10 is preferably 10 to 50 μm. As the base material of the partition member 10, for example, cellulose fiber is used. Further, a moisture absorbent is not added to the partition member 10 in advance.
　間隔保持部材１２は、隣り合う仕切部材１０の間隔を保持し、仕切部材１０の間に流路を形成する。間隔保持部材１２は、例えばコルゲート状に形成されている。コルゲート状とは、山部と谷部とで構成される波形の形状である。隣り合う仕切部材１０の間に間隔保持部材１２が挟み込まれた状態において、コルゲート状の間隔保持部材１２の山部と谷部とにより隣り合う仕切部材１０の間隔が保持されるとともに、隣り合う仕切部材１０の間に流路となる空間が形成される。なお、間隔保持部材１２は、隣り合う仕切部材１０の間隔を所定の間隔に保持できるものであればよく、例えば矩形波状または三角波状に形成されていてもよい。 The spacing member 12 maintains the spacing between adjacent partition members 10 and forms a flow path between the partition members 10. The spacing member 12 is formed, for example, in a corrugated shape. The corrugated shape is a wavy shape composed of peaks and valleys. In a state where the spacing member 12 is sandwiched between the adjacent partition members 10, the distance between the adjacent partition members 10 is maintained by the peaks and valleys of the corrugated spacing member 12, and the distance between the adjacent partition members 10 is maintained. A space serving as a flow path is formed between the members 10. Note that the spacing member 12 may be any member as long as it can maintain the spacing between adjacent partition members 10 at a predetermined spacing, and may be formed in, for example, a rectangular wave shape or a triangular wave shape.
　全熱交換素子１において仕切部材１０と間隔保持部材１２とが積層された状態において、間隔保持部材１２は、その波形の波の筋の方向が一層ずつ交差するように配置されている。本実施の形態では、波の筋の方向が交差する角度は、９０°またはそれに近い角度に設定されている。このような間隔保持部材１２の配置により、一方の波の筋の方向に沿って設けられる第一の流路１４と、他方の波の筋の方向に沿って設けられる第二の流路１６とが、互いに独立して形成される。第一の流路１４と第二の流路１６とは、平面視において互いに交差する。全熱交換素子１では、第一の流路１４を流れる第一の気流１８と、第二の流路１６を流れる第二の気流２０との間で、仕切部材１０を媒体として潜熱および顕熱が交換される。 In the state in which the partition member 10 and the spacing member 12 are stacked in the total heat exchange element 1, the spacing member 12 is arranged so that the directions of the wave lines of the spacing members 12 intersect layer by layer. In this embodiment, the angle at which the directions of the wave lines intersect is set to 90° or an angle close to it. By arranging the spacing member 12 in this manner, a first flow path 14 provided along the direction of one wave line, and a second flow path 16 provided along the direction of the other wave line. are formed independently of each other. The first flow path 14 and the second flow path 16 intersect with each other in plan view. In the total heat exchange element 1, latent heat and sensible heat are transferred between the first air flow 18 flowing through the first flow path 14 and the second air flow 20 flowing through the second flow path 16 using the partition member 10 as a medium. is exchanged.
　間隔保持部材１２は、例えば特殊加工紙の単層構造を有している。間隔保持部材１２の基材としては、例えばセルロース繊維が用いられる。セルロース繊維は親水性素材であるため、セルロース繊維を用いることで、間隔保持部材１２に水溶性素材を添加しやすくすることができる。また、間隔保持部材１２の毛細管効果を高めて拡散性を上げることができるので、間隔保持部材１２内の湿度移動効果を高める、すなわち湿度フィン効果として機能しやすくすることができる。間隔保持部材１２の厚さは、例えば５０～２００μｍである。 The spacing member 12 has, for example, a single-layer structure made of specially processed paper. As the base material of the spacing member 12, for example, cellulose fiber is used. Since cellulose fiber is a hydrophilic material, by using cellulose fiber, it is possible to easily add a water-soluble material to the spacing member 12. Further, since the capillary effect of the spacing member 12 can be enhanced to increase the diffusivity, the humidity movement effect within the spacing member 12 can be enhanced, that is, it can be made easier to function as a humidity fin effect. The thickness of the spacing member 12 is, for example, 50 to 200 μm.
　間隔保持部材１２には、水溶性の吸湿剤が添加されている。水溶性の吸湿剤としては、吸湿作用の強いものが好ましく、例えば塩化リチウムや塩化カルシウム等が用いられる。このように吸湿作用の強い吸湿剤を用いることで、湿度交換効率および湿度フィン効果を高めることができる。間隔保持部材１２に添加される吸湿剤の量は、２～１０ｇ／ｍ２であり、好ましくは３～７ｇ／ｍ２である。 A water-soluble moisture absorbent is added to the spacing member 12. The water-soluble hygroscopic agent preferably has a strong hygroscopic effect, such as lithium chloride or calcium chloride. By using a hygroscopic agent having a strong hygroscopic effect as described above, the humidity exchange efficiency and the humidity fin effect can be enhanced. The amount of moisture absorbent added to the spacing member 12 is from 2 to 10 g/m 2 , preferably from 3 to 7 g/m 2 .
　間隔保持部材１２は、仕切部材１０に接着されている。本実施の形態では、全熱交換素子１は、接着部材２２をさらに備えている。図２に示すように、接着部材２２は、仕切部材１０と間隔保持部材１２とを接着する。接着部材２２は、高分子接合材が水溶媒によって溶解または水中に分散された水系接着剤であることが望ましい。このようにすることで、間隔保持部材１２から仕切部材１０への水溶性の吸湿剤の移動をスムーズに行うことができる。このような接着剤としては、例えば、酢酸ビニル系エマルジョン接着剤や、エチレン酢酸ビニル共重合体（ＥＶＡ）系接着剤、ポリウレタン含有酢酸ビニル系接着剤等が挙げられる。 The spacing member 12 is bonded to the partition member 10. In this embodiment, the total heat exchange element 1 further includes an adhesive member 22. As shown in FIG. 2, the adhesive member 22 adheres the partition member 10 and the spacing member 12. The adhesive member 22 is preferably a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water. By doing so, the water-soluble moisture absorbent can be smoothly moved from the spacing member 12 to the partition member 10. Examples of such adhesives include vinyl acetate emulsion adhesives, ethylene vinyl acetate copolymer (EVA) adhesives, and polyurethane-containing vinyl acetate adhesives.
　次に、全熱交換素子１の製造方法について、図３および図４を参照して説明する。図３は、全熱交換素子１の仕切部材１０および間隔保持部材１２の接着前の構成を示す断面図である。図４は、全熱交換素子１の仕切ユニット２４の構成を示す断面図である。 Next, a method for manufacturing the total heat exchange element 1 will be described with reference to FIGS. 3 and 4. FIG. 3 is a sectional view showing the configuration of the partition member 10 and the spacing member 12 of the total heat exchange element 1 before they are bonded together. FIG. 4 is a sectional view showing the configuration of the partition unit 24 of the total heat exchange element 1.
　まず、コルゲート加工機により、仕切部材１０と間隔保持部材１２とを接着し、図４に示すような仕切ユニット２４を作製する。ここで、図３の状態、すなわち仕切部材１０と間隔保持部材１２とが接着される前の状態では、間隔保持部材１２にのみ吸湿剤が添加されており、仕切部材１０には吸湿剤が添加されていない（図３においてハッチング無しで表現している。）。図３に示すように、波形状に成形された間隔保持部材１２の稜部に接着部材２２を塗布し、仕切部材１０と間隔保持部材１２とを貼り合わせて一体化する。これにより、図４に示す、仕切ユニット２４が作製される。 First, the partition member 10 and the spacing member 12 are bonded together using a corrugating machine to produce a partition unit 24 as shown in FIG. 4. Here, in the state shown in FIG. 3, that is, before the partition member 10 and the spacing member 12 are bonded, the moisture absorbent is added only to the spacing member 12, and the moisture absorbent is added to the partition member 10. (It is expressed without hatching in Figure 3.) As shown in FIG. 3, an adhesive member 22 is applied to the ridge of the spacing member 12 formed into a wave shape, and the partition member 10 and the spacing member 12 are bonded together and integrated. As a result, the partition unit 24 shown in FIG. 4 is manufactured.
　仕切部材１０と間隔保持部材１２とを接着すると、仕切部材１０と間隔保持部材１２との接着部分、すなわち接着部材２２を介して、間隔保持部材１２に添加された吸湿剤が仕切部材１０に拡散し、移動する。これにより、仕切部材１０に吸湿剤が存在する状態になり（図４においてハッチング有りで表現している。）、仕切ユニット２４全体に吸湿剤が存在することとなる。なお、図３の状態、すなわち仕切部材１０と間隔保持部材１２とが接着される前の状態では、間隔保持部材１２にのみ吸湿剤が添加された状態であるため、間隔保持部材１２に添加された吸湿剤が、接着部材２２の内部および表面に拡散し、移動して、接着後の仕切部材１０へと移動しやすい構成となっている。これにより、仕切部材１０への吸湿剤のスムーズな移動を促進できる。 When the partition member 10 and the spacing member 12 are bonded together, the moisture absorbent added to the spacing member 12 is diffused into the partition member 10 through the bonded portion between the partition member 10 and the spacing member 12, that is, the adhesive member 22. and move. As a result, the moisture absorbent is present in the partition member 10 (represented by hatching in FIG. 4), and the moisture absorbent is present in the entire partition unit 24. Note that in the state shown in FIG. 3, that is, before the partition member 10 and the spacing member 12 are bonded together, the moisture absorbent is added only to the spacing member 12. The moisture absorbent diffuses inside and on the surface of the adhesive member 22, moves, and is easily moved to the partition member 10 after being bonded. Thereby, smooth movement of the moisture absorbent to the partition member 10 can be promoted.
　上述のように間隔保持部材１２に添加された吸湿剤が仕切部材１０に移動し、仕切部材１０に吸湿剤が含まれている状態では、仕切部材１０を通した第一の気流１８と第二の気流２０との間の湿度交換が促進される。また、間隔保持部材１２に吸湿剤が残ることも湿度交換を促進するうえで重要な要素である。吸湿剤を含む間隔保持部材１２が、間隔保持部材１２に流路内を流通する空気から湿分を吸着すると、間隔保持部材１２内の含水率が上昇し、水分流として間隔保持部材１２内を湿分が移動しやすくなる。この場合、間隔保持部材１２は仕切部材１０に対する湿度フィンとして作用し、仕切部材１０が担っていた湿度交換面積を増やすことと同等の効果が得られる。 As described above, the moisture absorbent added to the spacing member 12 moves to the partition member 10, and when the moisture absorbent is contained in the partition member 10, the first airflow 18 passing through the partition member 10 and the second Humidity exchange between the airflow 20 and the airflow 20 is facilitated. Furthermore, the fact that the moisture absorbent remains in the spacing member 12 is also an important factor in promoting humidity exchange. When the spacing member 12 containing a moisture absorbing agent adsorbs moisture from the air flowing through the flow path in the spacing member 12, the moisture content in the spacing member 12 increases, and the moisture flow inside the spacing member 12 increases. Moisture moves more easily. In this case, the spacing member 12 acts as a humidity fin for the partition member 10, and the same effect as increasing the humidity exchange area that the partition member 10 was responsible for can be obtained.
　仕切ユニット２４を作製した後、仕切ユニット２４を、間隔保持部材１２の波の筋の方向が一層ずつ交差するように積層し、隣り合う仕切ユニット２４を接着する。仕切ユニット２４は、例えば９０°回転させて積層して接着する。仕切ユニット２４同士を接着する場合には、接着部材２２を用いて接着する。この工程を複数回繰り返すことにより、図１に示すような全熱交換素子１を製作することができる。 After producing the partition units 24, the partition units 24 are stacked one by one so that the directions of the wave lines of the spacing members 12 intersect, and adjacent partition units 24 are bonded. The partition units 24 are, for example, rotated by 90 degrees, stacked, and bonded. When the partition units 24 are to be bonded together, the bonding member 22 is used to bond them together. By repeating this process multiple times, a total heat exchange element 1 as shown in FIG. 1 can be manufactured.
　以上に説明したように、本実施の形態に係る全熱交換素子１は、予め吸湿剤が添加されていない複数の仕切部材１０と、水溶性の吸湿剤が添加されており、隣り合う仕切部材１０の間隔を保持し、仕切部材１０の間に流路を形成し、仕切部材１０に接着された間隔保持部材１２と、を備え、仕切部材１０には、間隔保持部材１２と仕切部材１０との接着部分を介して間隔保持部材１２から仕切部材１０に移動した水溶性の吸湿剤が含まれているものである。 As explained above, the total heat exchange element 1 according to the present embodiment includes a plurality of partition members 10 to which no moisture absorbent is added in advance, a water-soluble moisture absorbent added, and adjacent partition members 10 to which a water-soluble moisture absorbent is added. 10, a flow path is formed between the partition members 10, and a gap holding member 12 is bonded to the partition member 10. The water-soluble moisture absorbent is transferred from the spacing member 12 to the partition member 10 via the adhesive portion of the spacer.
　このように、仕切部材１０には予め吸湿剤が添加されていないので、間隔保持部材１２との接着前の仕切部材１０では吸湿による強度低下を抑制でき、仕切部材１０の加工性を確保することができる。また、間隔保持部材１２に添加された水溶性の吸湿剤は、間隔保持部材１２と仕切部材１０との接着部分を介して仕切部材１０に移動するため、仕切部材１０および間隔保持部材１２の両方に水溶性の吸湿剤が含まれる状態となる。このため、全熱交換素子１の湿度交換性能を確保することができる。加えて、間隔保持部材１２には添加された水溶性の吸湿剤が残りやすくなるため、間隔保持部材１２に湿度フィン効果を高めることができる。 In this way, since no moisture absorbent is added to the partition member 10 in advance, the strength reduction due to moisture absorption can be suppressed in the partition member 10 before it is bonded to the spacing member 12, and the workability of the partition member 10 can be ensured. Can be done. Furthermore, since the water-soluble moisture absorbent added to the spacing member 12 moves to the partitioning member 10 via the adhesive portion between the spacing member 12 and the partitioning member 10, both the partitioning member 10 and the spacing member 12 contains a water-soluble moisture absorbent. Therefore, the humidity exchange performance of the total heat exchange element 1 can be ensured. In addition, since the added water-soluble hygroscopic agent tends to remain in the spacing member 12, the humidity fin effect of the spacing member 12 can be enhanced.
　また、従来の特許文献１に記載された熱交換器では、仕切部材および間隔部材の各々に吸湿剤を添加するための加工を施す必要があるため、生産性が上がらず、コストを抑制することが困難であった。これに対して、本実施の形態における全熱交換素子１では、仕切部材１０に吸湿剤を添加するための加工は不要であるため、従来よりも仕切部材１０および仕切ユニット２４の生産性を向上させることができ、コストを抑制できる。 In addition, in the conventional heat exchanger described in Patent Document 1, it is necessary to perform processing to add a moisture absorbent to each of the partition members and the spacing members, so productivity does not increase and it is difficult to suppress costs. was difficult. On the other hand, in the total heat exchange element 1 according to the present embodiment, processing for adding a moisture absorbent to the partition member 10 is not necessary, so that the productivity of the partition member 10 and the partition unit 24 is improved compared to the conventional one. It is possible to reduce costs.
　加えて、従来の特許文献１に記載された熱交換器では、仕切部材および間隔部材の両方に吸湿剤が添加されることから、吸湿剤の添加量が多すぎるために、高湿度の環境下で自己結露が発生し、吸湿剤が流失する可能性があった。これに対して、本実施の形態における全熱交換素子１では、仕切部材１０に予め吸湿剤を添加していないため、高湿度の環境下での全熱交換素子１の使用において、結露水の発生の原因となり得る吸湿剤の使用量を抑制することができる。 In addition, in the conventional heat exchanger described in Patent Document 1, a hygroscopic agent is added to both the partition member and the spacing member, so the added amount of the hygroscopic agent is too large, so it cannot be used in a high humidity environment. There was a possibility that self-condensation would occur and the moisture absorbent would be washed away. On the other hand, in the total heat exchange element 1 according to the present embodiment, since no moisture absorbent is added to the partition member 10 in advance, when the total heat exchange element 1 is used in a high humidity environment, condensed water can It is possible to suppress the amount of moisture absorbent used, which can cause moisture generation.
　また、全熱交換素子１は、仕切部材１０と間隔保持部材１２とを接着する接着部材２２をさらに備え、接着部材２２は、高分子接合材が水溶媒によって溶解または水中に分散された水系接着剤である。このように、仕切部材１０と間隔保持部材１２とを接着する接着部材２２に水系接着剤を用いることで、間隔保持部材１２から仕切部材１０への水溶性の吸湿剤の移動、および間隔保持部材１２と仕切部材１０との間の水分の移動をスムーズに行うことができる。 The total heat exchange element 1 further includes an adhesive member 22 that adheres the partition member 10 and the spacing member 12, and the adhesive member 22 is a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water. It is a drug. In this way, by using a water-based adhesive for the adhesive member 22 that adheres the partition member 10 and the spacing member 12, the movement of the water-soluble moisture absorbent from the spacing member 12 to the partition member 10, and the movement of the water-soluble moisture absorbent from the spacing member 12 to the spacing member Moisture can smoothly move between the partition member 12 and the partition member 10.
　水溶性の吸湿剤は、塩化リチウムおよび塩化カルシウムの少なくとも一方を含む。このように、吸湿作用の強い吸湿剤である塩化リチウムや塩化カルシウムを用いることで、湿度交換効率および湿度フィン効果を高めることができる。 The water-soluble moisture absorbent contains at least one of lithium chloride and calcium chloride. In this way, by using lithium chloride or calcium chloride, which are hygroscopic agents with a strong hygroscopic effect, the humidity exchange efficiency and the humidity fin effect can be enhanced.
　間隔保持部材１２は、セルロース繊維を含む。このように、間隔保持部材１２にセルロース繊維を用いることで、セルロース繊維は親水性素材であるため、間隔保持部材１２に水溶性素材を添加しやすくすることができる。また、間隔保持部材１２の毛細管効果を高めて拡散性を上げることができるので、間隔保持部材１２内の湿度移動効果を高めることができる。 The spacing member 12 includes cellulose fibers. In this way, by using cellulose fibers for the spacing member 12, it is possible to easily add a water-soluble material to the spacing member 12 because cellulose fiber is a hydrophilic material. Further, since the capillary effect of the spacing member 12 can be enhanced to improve the diffusivity, the humidity movement effect within the spacing member 12 can be enhanced.
　間隔保持部材１２は、コルゲート状に形成されている。このような山部と谷部とで構成される波形の形状に間隔保持部材１２を形成することで、仕切部材１０の間に風路を形成しやすい構造とすることができるとともに、間隔保持部材１２がフィン効果を出しやすい形状とすることができる。 The spacing member 12 is formed in a corrugated shape. By forming the spacing member 12 in a wave-like shape composed of such peaks and troughs, it is possible to create a structure in which it is easy to form an air passage between the partition members 10, and the spacing member 12 can have a shape that easily produces a fin effect.
　また、本実施の形態に係る全熱交換素子１の製造方法は、吸湿剤が添加されていない仕切部材１０と水溶性の吸湿剤が添加された波形状の間隔保持部材１２とを接着して仕切ユニット２４を作製する工程と、仕切ユニット２４を、間隔保持部材１２の波の筋の方向が一層ずつ交差するように積層し、隣り合う仕切ユニット２４を接着する工程と、を備えるものである。 Further, the method for manufacturing the total heat exchange element 1 according to the present embodiment is to bond the partition member 10 to which no moisture absorbent is added and the wave-shaped spacing member 12 to which a water-soluble moisture absorbent is added. The method includes a step of manufacturing the partition unit 24, and a step of stacking the partition units 24 layer by layer so that the directions of the wave lines of the spacing member 12 intersect, and bonding adjacent partition units 24. .
　このように、仕切部材１０には予め吸湿剤が添加されていないので、間隔保持部材１２との接着前の仕切部材１０では吸湿による強度低下を抑制でき、仕切部材１０の加工性を確保することができる。また、吸湿剤が添加されていない仕切部材１０と水溶性の吸湿剤が添加された間隔保持部材１２とを接着して仕切ユニット２４を作製することで、間隔保持部材１２に添加された吸湿剤が、仕切部材１０と間隔保持部材１２との接着部分を介して仕切部材１０に拡散し、移動するとともに、間隔保持部材１２に添加された吸湿剤の一部はそのまま間隔保持部材１２に残る。これにより、間隔保持部材１２に残った吸湿剤によって間隔保持部材１２の湿度フィン効果を高めつつ、仕切部材１０に移動した吸湿剤によって仕切部材１０の透湿性能を高めることができる。 In this way, since no moisture absorbent is added to the partition member 10 in advance, the strength reduction due to moisture absorption can be suppressed in the partition member 10 before it is bonded to the spacing member 12, and the workability of the partition member 10 can be ensured. Can be done. In addition, by producing the partition unit 24 by bonding the partition member 10 to which no moisture absorbent is added and the spacing member 12 to which a water-soluble moisture absorbent is added, the moisture absorbent added to the spacing retention member 12 can be made. The moisture absorbent is diffused and moved to the partition member 10 via the bonded portion between the partition member 10 and the spacing member 12, and a portion of the moisture absorbent added to the spacing member 12 remains on the spacing member 12 as it is. Thereby, the moisture absorbent remaining in the spacing member 12 can enhance the humidity fin effect of the spacing member 12, and the moisture absorbent transferred to the partition member 10 can improve the moisture permeability of the partition member 10.
　なお、上述した本実施の形態において、仕切ユニット２４同士を接着する場合に、接着部材２２を用いて接着した。このとき、図２に示すように、仕切ユニット２４を作製する際に仕切部材１０と間隔保持部材１２とを接着する接着部材２２ａと、仕切ユニット２４同士を接着する接着部材２２ｂとは、共に上述した水系接着剤であることが望ましいが、材料は同じものでも異なるものでもよい。 Note that in the present embodiment described above, when bonding the partition units 24 to each other, the bonding member 22 was used for bonding. At this time, as shown in FIG. 2, the adhesive member 22a that adheres the partition member 10 and the spacing member 12 when manufacturing the partition unit 24, and the adhesive member 22b that adheres the partition units 24 to each other are both as described above. A water-based adhesive is preferred, but the materials may be the same or different.
　また、仕切ユニット２４を作製した後に、吸湿剤の添加量を抑えながら全熱交換素子１を作製したい場合には、接着部材２２ｂには接着部材２２ａと同じ接着剤を使用すればよい。しかし、例えば、吸湿剤の添加量が不足することが判明した場合には、接着部材２２ｂに予め上述した水溶性の吸湿剤を添加しておくことにより、仕切ユニット２４の生産性を確保（吸湿剤の添加量が多すぎると軟化しやすい。）しつつ、全熱交換素子１としてアセンブリした後の湿度交換性能を改善する、等の性能調整に活用することができる。 Furthermore, after producing the partition unit 24, if it is desired to produce the total heat exchange element 1 while suppressing the amount of moisture absorbent added, the same adhesive as the adhesive member 22a may be used for the adhesive member 22b. However, for example, if it is found that the amount of moisture absorbent added is insufficient, the productivity of the partition unit 24 can be ensured (moisture absorption (If the amount of the agent added is too large, it tends to soften.) However, it can be used for performance adjustment such as improving the humidity exchange performance after assembly as the total heat exchange element 1.
実施の形態２．
　次に、実施の形態２について、図５を参照して説明する。図５は、本実施の形態における全熱交換器１００の構成を簡略化して示す模式図である。なお、本実施の形態のうち、実施の形態１と同様の部分の説明は省略する。 Embodiment 2.
Next, Embodiment 2 will be described with reference to FIG. 5. FIG. 5 is a schematic diagram showing a simplified configuration of total heat exchanger 100 in this embodiment. Note that, in this embodiment, descriptions of parts similar to those in Embodiment 1 will be omitted.
　本実施の形態における全熱交換器１００は、実施の形態１で説明した全熱交換素子１と、給気用送風機１１６と、排気用送風機１１８と、を備える。 The total heat exchanger 100 in this embodiment includes the total heat exchange element 1 described in Embodiment 1, a supply air blower 116, and an exhaust air blower 118.
　全熱交換素子１は、全熱交換器１００が有する直方体状の筐体１０２内に収容されている。本実施の形態では、筐体１０２には、室内側の吸込口１０４および吹出口１０６と、室外側の吸込口１０８および吹出口１１０と、給気流路１１２と、排気流路１１４と、が設けられている。室内側の吸込口１０４および吹出口１０６は、筐体１０２の対向する側面の一方に設けられ、室外側の吸込口１０８および吹出口１１０は、筐体１０２の対向する側面の他方に設けられている。給気流路１１２は、室外の空気を室内へ供給するための流路であり、室外側の吸込口１０８と室内側の吹出口１０６とを、全熱交換素子１の第一の流路１４を介して結ぶ流路である。排気流路１１４は、室内の空気を室外に排気するための流路であり、室内側の吸込口１０４と室外側の吹出口１１０とを、全熱交換素子１の第二の流路１６を介して結ぶ流路である。 The total heat exchange element 1 is housed in a rectangular parallelepiped-shaped housing 102 that the total heat exchanger 100 has. In this embodiment, the housing 102 is provided with an indoor suction port 104 and an air outlet 106, an outdoor air suction port 108 and an air outlet 110, an air supply flow path 112, and an exhaust air flow path 114. It is being The indoor suction port 104 and the air outlet 106 are provided on one of the opposing sides of the housing 102, and the outdoor air suction port 108 and the air outlet 110 are provided on the other opposing side surface of the housing 102. There is. The air supply flow path 112 is a flow path for supplying outdoor air indoors, and connects the outdoor air inlet 108 and the indoor air outlet 106 to the first flow path 14 of the total heat exchange element 1. This is a flow path that connects the The exhaust flow path 114 is a flow path for exhausting indoor air to the outdoors, and connects the indoor air inlet 104 and the outdoor air outlet 110 to the second flow path 16 of the total heat exchange element 1. This is a flow path that connects the
　給気用送風機１１６は、全熱交換素子１の第一の流路１４に気流の流れを発生させる。本実施の形態では、第一の流路１４は給気流路１１２と連通しており、給気用送風機１１６は、給気流路１１２において室外側の吸込口１０８から第一の流路１４を通って室内側の吹出口１０６へ向かう空気の流れを発生させる。給気用送風機１１６は、例えば、ケーシングと、ケーシング内に収納された羽根車と、羽根車を回転させる電動機とから構成されている。給気用送風機１１６は、例えば給気流路１１２において全熱交換素子１と室内側の吹出口１０６と間に設けられている。 The air supply blower 116 generates an air flow in the first flow path 14 of the total heat exchange element 1. In this embodiment, the first flow path 14 communicates with the air supply flow path 112, and the air supply blower 116 passes through the first flow path 14 from the suction port 108 on the outdoor side in the air supply flow path 112. This generates a flow of air toward the air outlet 106 on the indoor side. The air supply blower 116 includes, for example, a casing, an impeller housed in the casing, and an electric motor that rotates the impeller. The air supply blower 116 is provided, for example, in the air supply flow path 112 between the total heat exchange element 1 and the air outlet 106 on the indoor side.
　排気用送風機１１８は、全熱交換素子１の第二の流路１６に気流の流れを発生させる。本実施の形態では、第二の流路１６は排気流路１１４と連通しており、排気用送風機１１８は、排気流路１１４において室内側の吸込口１０４から第二の流路１６を通って室外側の吹出口１１０へ向かう空気の流れを発生させる。排気用送風機１１８は、例えば、ケーシングと、ケーシング内に収納された羽根車と、羽根車を回転させる電動機とから構成されている。排気用送風機１１８は、例えば排気流路１１４において全熱交換素子１と室外側の吹出口１１０と間に設けられている。 The exhaust blower 118 generates an airflow in the second flow path 16 of the total heat exchange element 1. In this embodiment, the second flow path 16 communicates with the exhaust flow path 114, and the exhaust blower 118 passes through the second flow path 16 from the indoor suction port 104 in the exhaust flow path 114. A flow of air toward the outlet 110 on the outdoor side is generated. The exhaust blower 118 includes, for example, a casing, an impeller housed in the casing, and an electric motor that rotates the impeller. The exhaust blower 118 is provided, for example, in the exhaust flow path 114 between the total heat exchange element 1 and the outdoor air outlet 110.
　全熱交換器１００が運転されると、給気用送風機１１６と排気用送風機１１８とが作動する。これにより、例えば、冬季における冷たく乾燥した室外の空気は、給気流路１１２を流れる給気流として、室外側の吸込口１０８から吸い込まれ、全熱交換素子１の第一の流路１４を通り、室内側の吹出口１０６から吹き出される。また、暖かく湿度の高い室内の空気は、排気流路１１４を流れる排気流として、室内側の吸込口１０４から吸い込まれ、全熱交換素子１の第二の流路１６を通り、室外側の吹出口１１０から吹き出される。 When the total heat exchanger 100 is operated, the supply air blower 116 and the exhaust air blower 118 are operated. Thereby, for example, cold and dry outdoor air in winter is sucked in from the outdoor side suction port 108 as a supply air flow flowing through the supply air flow path 112, passes through the first flow path 14 of the total heat exchange element 1, The air is blown out from the air outlet 106 on the indoor side. In addition, the warm and humid indoor air is sucked in from the suction port 104 on the indoor side as an exhaust flow flowing through the exhaust flow path 114, passes through the second flow path 16 of the total heat exchange element 1, and passes through the air outlet on the outdoor side. It is blown out from the outlet 110.
　全熱交換素子１では、給気流および排気流の２つの異なる気流が仕切部材１０を隔ててそれぞれ流れる。このとき、仕切部材１０を介して各気流の熱が伝わり、また仕切部材１０を水蒸気が透過することで、給気流と排気流との間で顕熱および潜熱の交換が行われる。同時に、間隔保持部材１２も各気流との吸放湿および湿分の移動促進を行うことで、仕切部材１０の拡大透湿面積として作用する。これにより、給気流は暖められるとともに加湿されて室内に供給され、排気流は冷やされるとともに減湿されて室外へと排出される。したがって、全熱交換器１００で換気を行うことで、室内の空調の冷暖房のエネルギーの損失を抑えつつ、室内の空気を入れ替えることができる。 In the total heat exchange element 1, two different airflows, an intake airflow and an exhaust airflow, flow through the partition member 10, respectively. At this time, the heat of each airflow is transmitted through the partition member 10, and water vapor permeates through the partition member 10, so that sensible heat and latent heat are exchanged between the supply air flow and the exhaust air flow. At the same time, the spacing member 12 also acts as an expanded moisture permeable area of the partition member 10 by absorbing and releasing moisture from each airflow and promoting the movement of moisture. As a result, the supply air flow is warmed and humidified before being supplied indoors, and the exhaust air flow is cooled and dehumidified before being discharged outdoors. Therefore, by performing ventilation with the total heat exchanger 100, the indoor air can be replaced while suppressing the loss of energy for heating and cooling the indoor air conditioner.
　本実施の形態における全熱交換器１００は、全熱交換素子１と、全熱交換素子１に形成された第一の流路１４に気流の流れを発生させる給気用送風機１１６と、全熱交換素子１に形成された、第一の流路１４とは独立した第二の流路１６に気流の流れを発生させる排気用送風機１１８と、を備えるものである。このように、全熱交換器１００は、湿度交換性能に優れた全熱交換素子１を有しているので、全熱交換器１００の湿度交換性能を向上させることができる。 The total heat exchanger 100 in this embodiment includes a total heat exchange element 1, a supply air blower 116 that generates an air flow in a first flow path 14 formed in the total heat exchange element 1, and a total heat exchange It is provided with an exhaust blower 118 that generates an air flow in a second flow path 16 formed in the exchange element 1 and independent of the first flow path 14 . As described above, since the total heat exchanger 100 includes the total heat exchange element 1 having excellent humidity exchange performance, the humidity exchange performance of the total heat exchanger 100 can be improved.
　なお、上述した各実施の形態を、適宜、組み合わせたり、変形や省略したりすることも、実施の形態で示された技術的思想の範囲に含まれる。 Note that it is also within the scope of the technical idea shown in the embodiments to combine, modify, or omit the embodiments described above as appropriate.
　本開示によれば、湿度交換性能を確保しつつ、仕切部材の加工性を確保できる全熱交換素子、全熱交換器、および全熱交換素子の製造方法を提供できる。 According to the present disclosure, it is possible to provide a total heat exchange element, a total heat exchanger, and a method for manufacturing a total heat exchange element that can ensure workability of a partition member while ensuring humidity exchange performance.
　１　全熱交換素子、１０　仕切部材、１２　間隔保持部材、１４　第一の流路、１６　第二の流路、１８　第一の気流、２０　第二の気流、２２、２２ａ、２２ｂ　接着部材、２４　仕切ユニット、１００　全熱交換器、１０２　筐体、１０４、１０８　吸込口、１０６、１１０　吹出口、１１２　給気流路、１１４　排気流路、１１６　給気用送風機、１１８　排気用送風機。 1 Total heat exchange element, 10 Partition member, 12 Spacing member, 14 First flow path, 16 Second flow path, 18 First air flow, 20 Second air flow, 22, 22a, 22b Adhesive member, 24 Partition unit, 100 Total heat exchanger, 102 Housing, 104, 108 Suction port, 106, 110 Air outlet, 112 Air supply flow path, 114 Exhaust flow path, 116 Air supply blower, 118 Exhaust air blower.

Claims (7)

  1. 　予め吸湿剤が添加されていない複数の仕切部材と、
    　水溶性の吸湿剤が添加されており、隣り合う前記仕切部材の間隔を保持し、前記仕切部材の間に流路を形成し、前記仕切部材に接着された間隔保持部材と、
    　を備え、
    　前記仕切部材には、前記間隔保持部材と前記仕切部材との接着部分を介して前記間隔保持部材から前記仕切部材に移動した前記水溶性の吸湿剤が含まれている全熱交換素子。     a plurality of partition members to which no moisture absorbent has been added in advance;
    a spacing member to which a water-soluble moisture absorbent is added, which maintains a distance between the adjacent partition members, forms a flow path between the partition members, and is bonded to the partition member;
    Equipped with
    A total heat exchange element, wherein the partition member contains the water-soluble hygroscopic agent that has moved from the space holding member to the partition member via an adhesive portion between the space holding member and the partition member.
  2. 　前記仕切部材と前記間隔保持部材とを接着する接着部材をさらに備え、
    　前記接着部材は、高分子接合材が水溶媒によって溶解または水中に分散された水系接着剤である請求項１に記載の全熱交換素子。     further comprising an adhesive member that adheres the partition member and the spacing member,
    2. The total heat exchange element according to claim 1, wherein the adhesive member is a water-based adhesive in which a polymer bonding material is dissolved in a water solvent or dispersed in water.
  3. 　前記水溶性の吸湿剤は、塩化リチウムおよび塩化カルシウムの少なくとも一方を含む請求項１または２に記載の全熱交換素子。 The total heat exchange element according to claim 1 or 2, wherein the water-soluble moisture absorbent contains at least one of lithium chloride and calcium chloride.
  4. 　前記間隔保持部材はセルロース繊維を含む請求項１から請求項３のいずれか１項に記載の全熱交換素子。 The total heat exchange element according to any one of claims 1 to 3, wherein the spacing member includes cellulose fibers.
  5. 　前記間隔保持部材はコルゲート状に形成されている請求項１から請求項４のいずれか１項に記載の全熱交換素子。 The total heat exchange element according to any one of claims 1 to 4, wherein the spacing member is formed in a corrugated shape.
  6. 　請求項１から請求項５のいずれか１項に記載の全熱交換素子と、
    　前記全熱交換素子に形成された第一の流路に気流の流れを発生させる給気用送風機と、
    　前記全熱交換素子に形成された、前記第一の流路とは独立した第二の流路に気流の流れを発生させる排気用送風機と、
    　を備える全熱交換器。     The total heat exchange element according to any one of claims 1 to 5,
    an air supply blower that generates an air flow in a first flow path formed in the total heat exchange element;
    an exhaust blower that generates an airflow in a second flow path that is formed in the total heat exchange element and is independent of the first flow path;
    Total heat exchanger equipped with.
  7. 　吸湿剤が添加されていない仕切部材と水溶性の吸湿剤が添加された波形状の間隔保持部材とを接着して仕切ユニットを作製する工程と、
    　前記仕切ユニットを、前記間隔保持部材の波の筋の方向が一層ずつ交差するように積層し、隣り合う前記仕切ユニットを接着する工程と、
    　を備える全熱交換素子の製造方法。     producing a partition unit by bonding a partition member to which no moisture absorbent is added and a wave-shaped spacing member to which a water-soluble moisture absorbent is added;
    stacking the partition units so that the directions of the wave lines of the spacing members intersect layer by layer, and adhering adjacent partition units;
    A method for manufacturing a total heat exchange element comprising:
PCT/JP2022/020653 2022-05-18 2022-05-18 Total heat exchange element, total heat exchanger, and production method of total heat exchange element WO2023223455A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011012894A (en) * 2009-07-02 2011-01-20 Panasonic Corp Material for total heat exchange element and heat exchange type ventilation device using the material
WO2015098592A1 (en) * 2013-12-26 2015-07-02 東レ株式会社 Method for manufacturing total heat exchanger element, and total heat exchanger element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011012894A (en) * 2009-07-02 2011-01-20 Panasonic Corp Material for total heat exchange element and heat exchange type ventilation device using the material
WO2015098592A1 (en) * 2013-12-26 2015-07-02 東レ株式会社 Method for manufacturing total heat exchanger element, and total heat exchanger element

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