Partition member for total heat exchange element, total heat exchange element, and ventilation device

Abstract

The partition member (40) for a total heat exchange element includes a sheet-like porous base material (41) and a moisture-permeable film (42) provided on the porous base material (41). The moisture-permeable film (42) contains a functional material (46) that functions to at least one of an antifungal action, an antibacterial action, and an antiviral action.

Description

Technical Field

[0001] This disclosure relates to a partition for a total heat exchange element, a total heat exchange element including the partition for the total heat exchange element, and a ventilation device including the total heat exchange element. Background Technology

[0002] As disclosed in Patent Document 1, ventilation devices including heat exchange elements are known. The heat exchange elements enable heat exchange between the supplied air and the exhaust air.

[0003] In the heat exchange element, flat plate-shaped partitions and corrugated plate-shaped spacing retaining components are alternately stacked. The partitions and spacing retaining components are bonded together with an adhesive. In the heat exchange element of Patent Document 1, the growth of bacteria and mold in the heat exchange element is inhibited by using an adhesive containing antibacterial and antifungal ingredients.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Publication No. 2011-163650 Summary of the Invention

[0007] -The technical problem the invention aims to solve-

[0008] In the heat exchange element of Patent Document 1, an adhesive containing antibacterial and antifungal components is applied to the portion of the flat partition member that contacts the corrugated spacing member. Therefore, the portions of the partition member and the spacing member that are not in contact with the adhesive cannot inhibit the growth of bacteria and mold.

[0009] The purpose of this disclosure is to keep the partition components for total heat exchange elements clean.

[0010] - Technical solutions used to solve technical problems -

[0011] The first aspect of this disclosure pertains to a partition member 40 for a total heat exchange element. This partition member 40 for a total heat exchange element is characterized by comprising a sheet-like porous substrate 41; a moisture-permeable membrane 42 disposed on the porous substrate 41; and a functional material 46, the functional material 46 serving at least one of anti-mildew, antibacterial, and antiviral functions, wherein the moisture-permeable membrane 42 contains the functional material 46.

[0012] In the first aspect, a moisture-permeable membrane 42 containing functional material 46 is disposed on a sheet-like porous substrate 41. Therefore, it is possible to keep the partition member 40 for the total heat exchange element clean.

[0013] The second aspect of this disclosure is based on the first aspect described above, characterized in that the thickness of the functional material 46 is smaller than the thickness of the moisture-permeable membrane 42.

[0014] In the second aspect, a functional material 46 with a thickness smaller than that of the permeable membrane 42 is disposed in the permeable membrane 42. Therefore, even if the functional material 46 falls off the permeable membrane 42 for some reason, the air flowing in the flow path separated by the partition member 40 of the total heat exchange element will not pass through the permeable membrane 42.

[0015] The third aspect of this disclosure pertains to a partition member 40 for a total heat exchange element. This partition member 40 is characterized by comprising a sheet-like porous substrate 41; a moisture-permeable membrane 42 disposed on the porous substrate 41; and a functional membrane 45 containing a functional material 46, the functional material 46 serving at least one of anti-mildew, antibacterial, and antiviral functions, the functional membrane 45 covering the surface of the porous substrate 41 or the moisture-permeable membrane 42.

[0016] In the third aspect, a functional membrane 45 containing functional material 46 is disposed in the partition member 40 for the total heat exchange element. Therefore, the partition member 40 for the total heat exchange element can be kept clean.

[0017] The fourth aspect of this disclosure is based on the third aspect described above, characterized in that: the functional membrane 45 is thinner than the moisture-permeable membrane 42.

[0018] In the fourth aspect, the functional membrane 45 is thinner than the moisture-permeable membrane 42. Therefore, it is possible to suppress the decrease in heat exchange capacity caused by the provision of the functional membrane 45 in the partition member 40 for the total heat exchange element.

[0019] The fifth aspect of this disclosure is based on any one of the first to fourth aspects described above, characterized in that: the moisture-permeable membrane 42 is configured to cover the surface of the porous substrate 41, and the surface of the porous substrate 41 covered by the moisture-permeable membrane 42 is subjected to a hydrophilic treatment.

[0020] In the fifth aspect, the porous substrate 41 is subjected to a hydrophilic treatment. Therefore, the process of forming a moisture-permeable membrane 42 on the surface of the porous substrate 41 becomes easier.

[0021] The sixth aspect of this disclosure is based on any one of the first to fifth aspects described above, characterized in that: the functional material 46 is a substance having pyridinethione in its molecular structure.

[0022] In the sixth aspect, a substance having pyridinethione in its molecular structure is provided as a functional material 46 in the partition component 40 for the total heat exchange element.

[0023] The seventh aspect of this disclosure pertains to a total heat exchange element 30. This total heat exchange element 30 is characterized in that it includes a plurality of total heat exchange element partitions 40, which are the total heat exchange element partitions described in any one of the first to sixth aspects. The total heat exchange element 30 includes spacing maintaining members 32, 125, and 155, which are arranged between the stacked total heat exchange element partitions 40 and maintain the spacing between adjacent total heat exchange element partitions 40. First airflow paths 36 and 121 and second airflow paths 37 and 151 are alternately formed, sandwiching the total heat exchange element partitions 40.

[0024] In the seventh aspect, a total heat exchange element 30 is formed, comprising a partition member 40 for total heat exchange elements of any one of the first to sixth aspects.

[0025] The eighth aspect of this disclosure pertains to a ventilation device 10. Furthermore, the ventilation device 10 is characterized in that it includes a total heat exchange element 30 as described in the seventh aspect above, wherein supply air from the outside to the inside flows in the first air flow paths 36, 121 of the total heat exchange element 30, and exhaust air from the inside to the outside flows in the second air flow paths 37, 151 of the total heat exchange element 30.

[0026] In the eighth aspect, a ventilation device 10 is configured to include the total heat exchange element 30 described in the seventh aspect above. Attached Figure Description

[0027] Figure 1 This is a simplified cross-sectional view of the partition component for the total heat exchange element according to the first embodiment;

[0028] Figure 2 This is a three-dimensional schematic diagram of the total heat exchange element according to the second embodiment;

[0029] Figure 3 This is a cross-sectional view of the main part of the total heat exchange element in the second embodiment;

[0030] Figure 4 This is a simplified structural diagram of the ventilation device according to the third embodiment;

[0031] Figure 5 This is a perspective view of the total heat exchange element according to the fourth embodiment;

[0032] Figure 6 This is a top view of the total heat exchange element according to the fourth embodiment;

[0033] Figure 7 This is a top view showing a portion of the total heat exchange element of the fourth embodiment after it has been removed;

[0034] Figure 8 It shows along Figure 7 A three-dimensional view of the section cut along line VIII-VIII and the periphery of that section;

[0035] Figure 9 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a first variation of other embodiments;

[0036] Figure 10 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a first variation of other embodiments;

[0037] Figure 11 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a first variation of other embodiments;

[0038] Figure 12 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a first variation of other embodiments;

[0039] Figure 13 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a second variation of other embodiments;

[0040] Figure 14 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a second variation of other embodiments;

[0041] Figure 15 This is a simplified cross-sectional view of the partition component for the total heat exchange element in a second variation of other embodiments;

[0042] Figure 16 The third variation of the other embodiments is equivalent to the total heat exchange element. Figure 3 A sectional view;

[0043] Figure 17 It is equivalent to the total heat exchange element of the fourth variation of other embodiments. Figure 3 A sectional view. Detailed Implementation

[0044] (First Implementation)

[0045] The first embodiment will be described. This embodiment relates to a partition member 40 for a total heat exchange element.

[0046] In this embodiment, the total heat exchange element 30 is configured by a partition member 40 for the total heat exchange element, which is installed in the ventilation device 10. The partition member 40 for the total heat exchange element in this embodiment is a component used to facilitate the exchange of sensible heat and latent heat (moisture) between the supply air and the exhaust air. Hereinafter, the "partition member for the total heat exchange element" will be simply referred to as the "partition member".

[0047] like Figure 1 As shown, the separating member 40 of this embodiment includes a sheet-like porous substrate 41 and a moisture-permeable membrane 42 disposed on the porous substrate 41. In the separating member 40 of this embodiment, the moisture-permeable membrane 42 is configured to cover one surface of the porous substrate 41, namely the first surface 41a.

[0048] -Porous substrate-

[0049] The porous substrate 41 is a porous sheet-like component made of, for example, a polyolefin resin. The porous substrate 41 can also be a nonwoven fabric made of fibrous resin. The thickness of the porous substrate 41 is, for example, 10 μm. The porous substrate 41 is a component that serves as a support for the moisture-permeable membrane 42, and a substrate with excellent moisture permeability is preferred.

[0050] A hydrophilic treatment is performed on one surface of the porous substrate 41, namely the first surface 41a. Examples of hydrophilic treatments include corona discharge treatment and plasma treatment. By performing this hydrophilic treatment, carboxyl, hydroxyl, or carbonyl groups can be generated on the first surface 41a of the porous substrate 41.

[0051] -Moisture permeable membrane-

[0052] The moisture-permeable membrane 42 is a membrane covering the entire first surface 41a of the porous substrate 41. The moisture-permeable membrane 42 is composed of a moisture-permeable polymer. The polymer constituting the moisture-permeable membrane 42 is a copolymer having a first structural unit and a second structural unit. The thickness of the moisture-permeable membrane 42 is, for example, 1 μm. The thickness of the moisture-permeable membrane 42 is not particularly limited, but is preferably 0.05 to 1 μm, more preferably 0.1 to 0.5 μm. If the thickness of the moisture-permeable membrane 42 is 0.05 μm or more, the film-forming properties are good, thereby improving gas barrier properties. If the thickness is 1 μm or less, the moisture permeability is even better.

[0053] Examples of monomers constituting the first structural unit include 2-methacryloyloxyethyl phosphorylcholine. Examples of monomers constituting the second structural unit include alkyl esters of (meth)acrylate, such as stearyl methacrylate, which have an alkyl group having two or more carbon atoms in the ester portion. In the copolymer constituting the breathable membrane 42, the copolymerization method of the first and second structural units is not particularly limited, and can be any of block copolymerization, alternating copolymerization, or random copolymerization.

[0054] The moisture-permeable membrane 42 contains a functional material 46 that provides anti-mildew and antibacterial effects. In this embodiment, the moisture-permeable membrane 42 contains sodium pyrithione (C5H4NNaOS) as the functional material 46. Molecules of the functional material 46, i.e., sodium pyrithione, are dispersed in the moisture-permeable membrane 42. Therefore, the size (van der Waals radius in this embodiment) of the functional material 46 contained in the moisture-permeable membrane 42 is less than 5 nm, which is smaller than the thickness of the moisture-permeable membrane 42 (approximately 1 μm).

[0055] The process of forming a moisture-permeable membrane 42 on a porous substrate 41 includes a coating process and a drying process. In the coating process, the composition for forming the moisture-permeable membrane 42 is coated onto a first surface 41a of the porous substrate 41. In the drying process, the coating film formed in the coating process is heated to evaporate the solvent. The composition used in the coating process is a composition obtained by dissolving or dispersing the aforementioned copolymer and functional material 46 in a solvent such as water. The first surface 41a of the porous substrate 41 on which the composition is to be coated in the coating process is pre-treated with a hydrophilicity treatment. Therefore, the thickness of the coating film formed on the surface of the first surface 41a is made uniform, thereby forming a moisture-permeable membrane 42 with uniform thickness.

[0056] In this embodiment, the functional material 46, sodium pyrithione, is dissolved in a solvent, namely water. Therefore, the functional material 46, sodium pyrithione, is substantially dispersed in a molecular state in the moisture-permeable membrane 42, which is formed by coating the above composition onto a porous substrate 41.

[0057] -Features of the first embodiment (1)-

[0058] In the partition member 40 of this embodiment, the moisture-permeable membrane 42 covering the entire first surface 41a of the porous substrate 41 contains a functional material 46 that provides anti-mildew and antibacterial effects. Therefore, the growth of bacteria and mold can be inhibited throughout the partition member 40, thereby keeping the entire partition member 40 clean.

[0059] -Features of the first embodiment (2)-

[0060] Functional material 46, namely sodium pyrithione, is substantially uniformly distributed in a molecular state within the moisture-permeable membrane 42 of the separator 40 in this embodiment. Therefore, bacterial and mold growth can be inhibited throughout the separator 40, thereby maintaining the cleanliness of the entire separator 40.

[0061] -Features of the first embodiment (3)-

[0062] Even though the concentration of sodium pyrithione, which is a functional material 46, in the permeable membrane 42 of this embodiment is about 4 ppm, it can still provide sufficient anti-mildew and antibacterial effects.

[0063] For example, to ensure that "4,4-(2-ethyl-2-nitrotrimethylene)bismorpholine / 4,4'-(2-ethyl-2-nitropropane-1,3-diyl)bismorpholine" and "silver (Ag)" exert sufficient antifungal and antibacterial effects, their concentration in the permeable membrane 42 needs to be set to approximately 500 ppm. Therefore, sodium pyrithione can exert antifungal and antibacterial effects at relatively low concentrations.

[0064] Therefore, according to this embodiment, the concentration of the functional material 46 in the moisture-permeable membrane 42 can be suppressed to a low level, thereby enabling the moisture-permeable membrane 42 to contain the functional material 46 that has anti-mildew and antibacterial effects without impairing the moisture permeability of the moisture-permeable membrane 42.

[0065] Substances containing pyridinethione in their molecular structure, such as sodium pyridinethione, have the property of not causing deterioration of the copolymer constituting the moisture-permeable membrane 42. Therefore, according to this embodiment, by using sodium pyridinethione as the functional material 46, the moisture-permeable membrane 42 can contain the functional material 46, which has anti-mildew and antibacterial effects, without compromising the durability of the moisture-permeable membrane 42.

[0066] -Features of the first embodiment (4)-

[0067] Here, when the functional material 46 is contained in the permeable membrane 42 in a particle (solid) state, the functional material 46 may detach from the permeable membrane 42. If the functional material 46 detaches from the permeable membrane 42, the portion where the functional material 46 was originally contained will become a void. Therefore, if the particle size of the functional material 46 is larger than the thickness of the permeable membrane 42, if the functional material 46 detaches from the permeable membrane 42, a void penetrating the permeable membrane 42 along its thickness direction will be formed on the permeable membrane 42. If such a void is formed on the permeable membrane 42, the air flowing on both sides of the separating member 40 will mix through the void in the permeable membrane 42, thus impairing the airtightness of the separating member 40.

[0068] On the other hand, in the moisture-permeable membrane 42 of the separator 40 in this embodiment, the functional material 46, namely sodium pyrithione, exists in the moisture-permeable membrane 42 in a molecular state. Therefore, the functional material 46 will not detach from the moisture-permeable membrane 42 of this embodiment. Thus, according to this embodiment, the airtightness of the separator 40 can be maintained for a longer period of time.

[0069] (Second Implementation)

[0070] The second embodiment will be described. This embodiment includes the heat exchange element 30 of the partition member 40 of the first embodiment.

[0071] like Figure 2 and Figure 3 As shown, the total heat exchange element 30 is a cross-flow heat exchanger with multiple first air flow paths 36 and multiple second air flow paths 37. The total heat exchange element 30 includes multiple partition members 40 and multiple spacing retention members 32, and the total heat exchange element 30 is generally formed in a quadrangular prism shape.

[0072] In the total heat exchange element 30, a plurality of partition members 40 and a plurality of spacing maintaining members 32 are alternately stacked. In the total heat exchange element 30, the spacing between adjacent partition members 40 is maintained substantially constant by the spacing maintaining members 32.

[0073] In the total heat exchange element 30, a first air flow path 36 and a second air flow path 37 are alternately formed in the stacking direction of the partition member 40 and the spacing maintaining member 32. Adjacent first air flow paths 36 and second air flow paths 37 are separated by the partition member 40.

[0074] The partition members 40 constituting the total heat exchange element 30 of this embodiment are formed to be approximately square when viewed from above. In the total heat exchange element 30 of this embodiment, the moisture-permeable membranes 42 of all partition members 40 face the first air flow path 36 (see reference). Figure 3 ).

[0075] The spacing maintaining member 32 is a corrugated plate-shaped member that appears approximately square when viewed from above. Multiple hills 32a and multiple valleys 32b are formed on the spacing maintaining member 32, each with a straight edge. The edges of each hill 32a and each valley 32b are substantially parallel to each other. The hills 32a and valleys 32b are formed alternately on the spacing maintaining member 32. The spacing maintaining member 32 maintains the spacing between the separating members 40 arranged on its two sides.

[0076] In the total heat exchange element 30, the members 32, separated by the spacing of the partition member 40, are arranged in a form that is substantially orthogonal to each other in the ridge direction of their respective waveforms. As a result, in the total heat exchange element 30, the first air flow path 36 opens on a pair of opposite sides of the total heat exchange element 30, and the second air flow path 37 opens on the remaining pair of opposite sides of the total heat exchange element 30.

[0077] In the total heat exchange element 30, different types of air flow through the first air flow path 36, 121 and the second air flow path 37, 151. For example, in the total heat exchange element 30 installed in the ventilation device, outdoor air supplied to the room (supply air) flows through the first air flow path 36, 121, and indoor air discharged to the outside (exhaust air) flows through the second air flow path 37, 151. In the total heat exchange element 30, sensible heat and latent heat (moisture) are exchanged between the air flowing in the first air flow path 36, 121 and the air flowing in the second air flow path 37, 151.

[0078] -Features of the second embodiment-

[0079] In the total heat exchange element 30 of this embodiment, a functional material 46 is provided on the entire portion of the surface of the partition member 40 facing the first air flow path 36. This functional material 46 serves to prevent mold and bacteria. Therefore, it is possible to inhibit the growth of bacteria and mold in almost the entire portion of the partition member 40 of the total heat exchange element 30 that is in contact with the supplied air, thereby enabling the supplied air passing through the total heat exchange element 30 to remain clean.

[0080] (Third Implementation)

[0081] The third embodiment will be described. This embodiment is a ventilation device 10 that includes the total heat exchange element 30 of the second embodiment.

[0082] like Figure 4 As shown, the ventilation device 10 includes a housing 15 that houses the total heat exchange element 30. An external air intake 16, an air supply port 17, an internal air intake 18, and an exhaust port 19 are provided on the housing 15. An air supply passage 21 and an exhaust passage 22 are formed within the internal space of the housing 15. One end of the air supply passage 21 is connected to the external air intake 16, and the other end is connected to the air supply port 17. One end of the exhaust passage 22 is connected to the internal air intake 18, and the other end is connected to the exhaust port 19.

[0083] The total heat exchange element 30 is arranged to cross the air supply side passage 21 and the exhaust side passage 22. The total heat exchange element 30 is installed in the housing 15 with the first air flow path 36 connected to the air supply side passage 21 and the second air flow path 37 connected to the exhaust side passage 22.

[0084] The ventilation device 10 also includes an air supply fan 26 and an exhaust fan 27. The air supply fan 26 is arranged in the air supply side passage 21 downstream of the total heat exchange element 30 (i.e., the air supply port 17 side). The exhaust fan 27 is arranged in the exhaust side passage 22 downstream of the total heat exchange element 30 (i.e., the exhaust port 19 side).

[0085] In the ventilation device 10, outdoor air flows into the room through the supply-side passage 21, and indoor air flows outward through the exhaust-side passage 22. The outdoor air flowing in the supply-side passage 21 and the indoor air flowing in the exhaust-side passage 22 exchange sensible heat and moisture (latent heat) in the total heat exchange element 30.

[0086] -Features of the third embodiment-

[0087] The ventilation device 10 of this embodiment includes the total heat exchange element 30 of the second embodiment. In the total heat exchange element 30 of the second embodiment, the growth of bacteria and mold is inhibited in almost the entire portion of the partition member 40 that is in contact with the supplied air. Therefore, according to this embodiment, the cleanliness of the supplied air to the room through the total heat exchange element 30 can be maintained for a long period of time.

[0088] (Fourth Implementation)

[0089] The fourth embodiment will be described. This embodiment includes the total heat exchange element 30 of the partition member 40 of the first embodiment. Similar to the total heat exchange element 30 of the second embodiment, the total heat exchange element 30 of this embodiment is provided in the ventilation device 10 of the third embodiment, so that sensible heat and latent heat (moisture) are exchanged between the supply air and the exhaust air.

[0090] -Structure of total heat exchange element-

[0091] like Figure 5 As shown, the total heat exchange element 30 is formed as a column with a polygonal end face. In this embodiment, the end face of the total heat exchange element 30 is an octagon with a relatively long transverse length. Also as... Figure 6 As shown, a main heat exchange section 111 and two auxiliary heat exchange sections 112a and 112b are formed in the total heat exchange element 30.

[0092] The main heat exchange section 111 is located in the total heat exchange element 30, such as Figure 6 The center point in the left-right direction shown. In Figure 6 In the top view of the total heat exchange element 30 shown, the main heat exchange section 111 is a rectangular portion with a relatively long lateral length. The auxiliary heat exchange sections 112a and 112b are located in the total heat exchange element 30 at intervals from the main heat exchange section 111. Figure 6 Laterally in the left and right directions. In the total heat exchange element 30, the main heat exchange section 111 is located at... Figure 6 On each of the left and right sides in the left and right direction, there is a secondary heat exchange section 112a and 112b. Figure 6 In the top view of the total heat exchange element 30 shown, each of the sub-heat exchange sections 112a and 112b is trapezoidal.

[0093] The total heat exchange element 30 includes a plurality of first elements 120 and a plurality of second elements 150. In the total heat exchange element 30, the first elements 120 and the second elements 150 are alternately overlapped. The first elements 120 form a first airflow path 121, which is the path through which supplied air flows. The second elements 150 form a second airflow path 151, which is the path through which discharged air flows. In the total heat exchange element 30, the first airflow path 121 and the second airflow path 151 are alternately formed in the stacking direction of the first elements 120 and the second elements 150.

[0094] On the side surface of the total heat exchange element 30 (the surface extending along the stacking direction of the first element 120 and the second element 150), a first inlet 122a, a first outlet 122b, a second inlet 152a, and a second outlet 152b are formed. The first inlet 122a and the first outlet 122b are formed on the first element 120 and communicate with the first air flow path 121. The second inlet 152a and the second outlet 152b are formed on the second element 150 and communicate with the second air flow path 151.

[0095] Just like Figure 6 and Figure 7 As shown, the first inlet 122a, the first outlet 122b, the second inlet 152a, and the second outlet 152b are formed on different sides of the total heat exchange element 30. In one secondary heat exchange section 112a of the total heat exchange element 30, the first inlet 122a is located on one side, and the second outlet 152b is located on the other side. In another secondary heat exchange section 112b of the total heat exchange element 30, the first outlet 122b is located on one side, and the second inlet 152a is located on the other side.

[0096] like Figure 8 As shown, the first element 120 includes a first frame 125 and a partition member 40 of the first embodiment, and the second element 150 includes a second frame 155 and a partition member 40 of the first embodiment.

[0097] The first frame 125 and the second frame 155 are flat resin components formed by injection molding. The first frame 125 and the second frame 155 are spacing-maintaining components that maintain the distance between adjacent separating components 40. When viewed from above, the first frame 125 and the second frame 155 are each formed as an octagon with a longer lateral length (see reference). Figure 7 When viewed from above, the shapes of the frames 125 and 155 are substantially the same as the shapes of the end faces of the total heat exchange element 30.

[0098] In the first element 120, the separator 40 covers one side of the first frame 125. Figure 8 Almost the entire lower surface of the first element 120. In the first element 120, the separator 40 is bonded to the first frame 125 with the moisture-permeable membrane 42 facing the first frame 125. In the first element 120, the moisture-permeable membrane 42 of the separator 40 faces the first airflow path 121 formed by the first element 120.

[0099] In the second element 150, the separator 40 covers one side of the second frame 155. Figure 8 The lower surface of the second element 150 is almost entirely covered by the second element 155. In the second element 150, the separator 40 is bonded to the second frame 155 with the second surface 41b of the porous substrate 41 facing the second frame 155. In the second element 150, the moisture-permeable membrane 42 of the separator 40 faces the first airflow path 121, which is formed by the first element 120 adjacent to the second element 150.

[0100] - Airflow and heat exchange -

[0101] like Figure 6 As shown, in the total heat exchange element 30, outdoor air OA flows into the first inlet 122a, and indoor air RA flows into the second inlet 152a. The outdoor air OA that has flowed into the first inlet 122a flows as supply air in the first air flow path 121, passing sequentially through a secondary heat exchange section 112a, a main heat exchange section 111, and another secondary heat exchange section 112b, and then flows out from the first outlet 122b to be supplied to the room. The indoor air RA that has flowed into the second inlet 152a flows as exhaust air in the second air flow path 151, passing sequentially through another secondary heat exchange section 112b, a main heat exchange section 111, and another secondary heat exchange section 112a, and then flows out from the second outlet 152b to be exhausted to the outside.

[0102] In each of the secondary heat exchange sections 112a and 112b of the total heat exchange element 30, the supply air flowing in the first air flow path 121 and the exhaust air flowing in the second air flow path 151 flow in directions that intersect each other. In the main heat exchange section 111 of the total heat exchange element 30, the supply air flowing in the first air flow path 121 and the exhaust air flowing in the second air flow path 151 flow in opposite directions to each other.

[0103] In the total heat exchange element 30, sensible heat and latent heat (moisture) are exchanged between the supply air flowing in the first air flow path 121 and the exhaust air flowing in the second air flow path 151. In the total heat exchange element 30, heat moves from the supply air to the exhaust air, which has a higher temperature. Moisture also moves from the supply air to the exhaust air, which has a lower humidity level.

[0104] In the total heat exchange element 30 of this embodiment, the supply air flowing in the first air flow path 121 and the exhaust air flowing in the second air flow path 151 exchange sensible heat and latent heat mainly in the main heat exchange section 111. Therefore, the total heat exchange element 30 of this embodiment is a counter-flow heat exchanger.

[0105] -Features of the fourth embodiment-

[0106] In the total heat exchange element 30 of this embodiment, a functional material 46 is provided on the entire portion of the surface of the partition member 40 facing the first air flow path 121. This functional material 46 serves to prevent mold and bacteria. Therefore, it is possible to inhibit the growth of bacteria and mold in almost the entire portion of the partition member 40 of the total heat exchange element 30 that is in contact with the supplied air, thereby enabling the supplied air passing through the total heat exchange element 30 to remain clean.

[0107] (Other implementation methods)

[0108] -First variation-

[0109] The structure of the partition member 40 for the total heat exchange element is not limited to the structure of the partition member 40 in the first embodiment.

[0110] For example, Figure 9 The partition member 40 shown includes a porous substrate 41 and two moisture-permeable membranes 42. In this partition member 40, one moisture-permeable membrane 42 covers the first surface 41a of the partition member 40, and the other moisture-permeable membrane 42 covers the second surface 41b of the partition member 40.

[0111] exist Figure 10 In the partition member 40 shown, a portion of the moisture-permeable membrane 42 enters the porous substrate 41. During the manufacture of this partition member 40, an aqueous composition used to form the moisture-permeable membrane 42 is impregnated into the interior of the porous substrate 41. Then, in this partition member 40, a portion of the moisture-permeable membrane 42 covers the first surface 41a of the porous substrate 41, while the remaining portion enters the interior of the porous substrate 41.

[0112] exist Figure 11 In the shown separator 40, the entire moisture-permeable membrane 42 is inserted into the porous substrate 41. During the manufacture of this separator 40, an aqueous composition for forming the moisture-permeable membrane 42 is injected into the interior of the porous substrate 41. In this separator 40, the moisture-permeable membrane 42 is formed at the central portion in the thickness direction of the porous substrate 41.

[0113] Figure 12The shown separator 40 includes two porous substrates 41 and a moisture-permeable membrane 42. In this separator 40, a porous substrate 41 is disposed on each side of the moisture-permeable membrane 42 in the thickness direction. One side of the moisture-permeable membrane 42 of the separator 40 contacts the first side 41a of one porous substrate 41, and the other side of the moisture-permeable membrane 42 of the separator 40 contacts the second side 41b of the other porous substrate 41.

[0114] - Second variation -

[0115] The structure of the partition member 40 for the total heat exchange element is not limited to the structure of the partition member 40 in the first embodiment.

[0116] In addition to the porous substrate 41 and the moisture-permeable membrane 42, the separator 40 may also include a functional membrane 45 containing a functional material 46. In this modified example, the moisture-permeable membrane 42 of the separator 40 does not contain the functional material 46. Here, the application of this modified example to the separator 40 of the first embodiment will be described.

[0117] exist Figure 13 In the partition member 40 shown in this modified example, the functional membrane 45 is configured to cover the entire surface of the moisture-permeable membrane 42. The functional membrane 45 is a membrane containing functional material 46. The thickness of the functional membrane 45 is, for example, 0.5 μm. The functional membrane 45 is thinner than the moisture-permeable membrane 42.

[0118] like Figure 14 As shown, the functional membrane 45 can also be disposed between the porous substrate 41 and the moisture-permeable membrane 42. In this case, the functional membrane 45 is configured to cover the first surface 41a of the porous substrate 41, and the moisture-permeable membrane 42 is configured to cover the surface of the functional membrane 45.

[0119] like Figure 15 As shown, the functional membrane 45 can also be configured to cover the second surface 41b of the porous substrate 41. In this case, the functional membrane 45 covers the surface of the porous substrate 41 opposite to the moisture-permeable membrane 42.

[0120] -Third variation-

[0121] like Figure 16 As shown, in the total heat exchange element 30 of the second and fourth embodiments, the moisture-permeable membranes 42 of all the partition components 40 can also face the second air flow paths 37 and 151. It should be noted that... Figure 16 This illustrates the application of this variation to the total heat exchange element 30 of the second embodiment.

[0122] In the total heat exchange element 30 of this modified example, the second surface 41b of the porous substrate 41 of the partition member 40 faces the first air flow path 36, 121 through which the supplied air flows, and the moisture-permeable membrane 42 of the partition member 40 faces the second air flow path 37, 151 through which the discharged air flows.

[0123] - Fourth variation -

[0124] In the total heat exchange element 30 of the second and fourth embodiments, the partition member 40 of the moisture-permeable membrane 42 facing the first air flow path 36, 121 and the partition member 40 of the moisture-permeable membrane 42 facing the second air flow path 37, 151 may also coexist.

[0125] For example, in Figure 17 In the total heat exchange element 30 shown, the partition members 40 of the moisture-permeable membrane 42 facing the first air flow paths 36, 121 and the partition members 40 of the moisture-permeable membrane 42 facing the second air flow paths 37, 151 are alternately arranged in the stacking direction of the partition members 40 and the spacing maintaining members 32, 125, 155. It should be noted that... Figure 17 This illustrates the application of this variation to the total heat exchange element 30 of the second embodiment.

[0126] - Fifth variation -

[0127] The partition component 40 in the above embodiments and modifications may also include zinc pyrithione (C 10 Zinc pyridinethione (H8N2O2S2Zn) is used as functional material 46 to provide anti-mildew and antibacterial effects. Zinc pyridinethione, as functional material 46, is dispersed in the breathable membrane 42 or functional membrane 45 in a particulate state.

[0128] When the functional material 46 is contained in the permeable membrane 42 in the form of particles, the particle size (e.g., major axis diameter) of the particles as functional material 46 is preferably smaller than the thickness of the permeable membrane 42. If the particle size of the particles as functional material 46 is smaller than the thickness of the permeable membrane 42, the airtightness of the permeable membrane 42 can be maintained even if the functional material 46 detaches from the permeable membrane 42 for some reason.

[0129] In the above embodiments and variations, the partition component 40 may also contain a quaternary ammonium salt antiviral agent (e.g., 3-(triethoxysilyl)propyldimethyloctadecylammonium chloride) as a functional material 46 that plays an antiviral role.

[0130] The embodiments and variations have been described above, but it should be understood that various changes can be made to the manner and specific details without departing from the spirit and scope of the claims. The embodiments and variations described above can also be appropriately combined or substituted, as long as the function of the object of this disclosure is not affected. The terms "first," "second," "third," etc., used in the specification and claims are only used to distinguish statements containing these terms and do not limit the number or order of such statements.

[0131] -Industry Applicability-

[0132] In summary, this disclosure is useful for partition components for total heat exchange elements, total heat exchange elements including the partition components for total heat exchange elements, and ventilation devices including total heat exchange elements.

[0133] - Symbol Explanation -

[0134] 10. Ventilation device

[0135] 32 Spacing Maintaining Components

[0136] 36 First airflow path

[0137] 37 Second airflow path

[0138] 40 Separation components for total heat exchange elements

[0139] 41 Porous Substrate

[0140] 41a (first surface of porous substrate)

[0141] 42 Moisture permeable membrane

[0142] 45 Functional Membranes

[0143] 46 Functional Materials

[0144] 121 First airflow path

[0145] 125 First Frame (Spacing Maintenance Component)

[0146] 151 Second Airflow Path

[0147] 155 Second Frame (Gap Maintaining Component)

Claims

1. A separator component for a total heat exchange element, characterized in that: The partition component for the total heat exchange element includes: Sheet-shaped porous substrate (41); A moisture-permeable membrane (42) is disposed on the porous substrate (41); and Functional material (46), wherein the functional material (46) performs at least one of the following functions: anti-mildew, antibacterial, and antiviral. The moisture-permeable membrane (42) contains the functional material (46). The moisture-permeable membrane (42) is configured to cover the surface of the porous substrate (41). The porous substrate (41) covered by the moisture-permeable membrane (42) is subjected to a hydrophilic treatment to generate carboxyl, hydroxyl or carbonyl groups.

2. The partition component for a total heat exchange element according to claim 1, characterized in that: The thickness of the functional material (46) is smaller than the thickness of the moisture-permeable membrane (42).

3. A separator component for a total heat exchange element, characterized in that: The partition component for the total heat exchange element includes: Sheet-shaped porous substrate (41); A moisture-permeable membrane (42) is disposed on the porous substrate (41); and A functional membrane (45) contains a functional material (46), which performs at least one of the following functions: anti-mildew, antibacterial, and antiviral. The functional membrane (45) covers the surface of the porous substrate (41) or the moisture-permeable membrane (42). The moisture-permeable membrane (42) is configured to cover the surface of the porous substrate (41). The porous substrate (41) covered by the moisture-permeable membrane (42) is subjected to a hydrophilic treatment to generate carboxyl, hydroxyl or carbonyl groups.

4. The partition component for a total heat exchange element according to claim 3, characterized in that: The functional membrane (45) is thinner than the moisture-permeable membrane (42).

5. The partition component for a total heat exchange element according to any one of claims 1 to 4, characterized in that: The functional material (46) is a substance that contains pyridinethione in its molecular structure.

6. A total heat exchange element, characterized in that: The total heat exchange element includes a plurality of partition components (40) for total heat exchange elements, wherein the partition components (40) for total heat exchange elements are the partition components for total heat exchange elements as described in any one of claims 1 to 5. Furthermore, the total heat exchange element includes spacing maintaining members (32, 125, 155), which are arranged between the stacked total heat exchange element separating members (40) and maintain the spacing between adjacent total heat exchange element separating members (40). The first air flow path (36, 121) and the second air flow path (37, 151) are alternately formed with the total heat exchange element sandwiched between the partition member (40).

7. A ventilation device, characterized in that: The ventilation device includes the total heat exchange element (30) as described in claim 6. Supply air from the outside to the inside flows in the first air flow path (36, 121) of the total heat exchange element (30), and exhaust air from the inside to the outside flows in the second air flow path (37, 151) of the total heat exchange element (30).

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