WO2019124286A1 - Élément d'échange de chaleur, et dispositif de ventilation de type à échange de chaleur faisant appel à celui-ci - Google Patents

Élément d'échange de chaleur, et dispositif de ventilation de type à échange de chaleur faisant appel à celui-ci Download PDF

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Publication number
WO2019124286A1
WO2019124286A1 PCT/JP2018/046222 JP2018046222W WO2019124286A1 WO 2019124286 A1 WO2019124286 A1 WO 2019124286A1 JP 2018046222 W JP2018046222 W JP 2018046222W WO 2019124286 A1 WO2019124286 A1 WO 2019124286A1
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WIPO (PCT)
Prior art keywords
flow path
heat exchange
heat transfer
path rib
transfer plate
Prior art date
Application number
PCT/JP2018/046222
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English (en)
Japanese (ja)
Inventor
洋祐 浜田
正太郎 山口
村山　拓也
郁 佐藤
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from JP2017246536A external-priority patent/JP6950517B2/ja
Priority claimed from JP2018055442A external-priority patent/JP2019168148A/ja
Priority claimed from JP2018058396A external-priority patent/JP2019168199A/ja
Priority claimed from JP2018062429A external-priority patent/JP2019174054A/ja
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2019124286A1 publication Critical patent/WO2019124286A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • 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

Definitions

  • the present disclosure relates to a heat exchange element that is used in a cold area or the like, and exchanges heat between an exhaust gas flow that exhausts indoor air to the outdoor air and a charge air flow that supplies outdoor air to the indoor air. It relates to a replaceable ventilator.
  • Patent Document 1 Conventionally, as a configuration of a heat exchange element used in this type of heat exchange type ventilator, for example, one described in Patent Document 1 is known in order to improve productivity.
  • FIG. 8 is a bird's-eye view showing the structure of a conventional heat exchange element 1001.
  • the heat exchange element 1001 is configured by laminating a large number of flat plates 1002 having heat conductivity.
  • Each flat plate 1002 includes a rising portion 1003.
  • the rising portion 1003 forms a gap between a pair of flat plates stacked adjacent to each other to form an air passage.
  • the flat plates 1002 are stacked such that air passages between the rising portions 1003 are orthogonal to each other.
  • a powder adhesive is printed in a strip shape on the flat plate 1002 in advance, and the printed portion is bent in a mountain shape and heated to join the flat plates 1002 bent in a mountain shape with the powder adhesive, and a rising portion 1003 is formed. It is done.
  • the flat plate having the heat conductivity is set up to maintain the distance between the flat plates. Therefore, when the strength necessary to maintain the distance between the flat plates is lost, the air passage is crushed, which causes the air flowing through the heat exchange element to be uneven, and the heat exchange efficiency decreases. Had. For example, when the temperature difference between the inside and the outside of the room is large, condensation occurs when heat exchange occurs between the air supply flow and the exhaust flow, and the rising portion of the flat plate absorbs the dewdrops, thereby separating the flat plates from each other. You may lose the strength needed to maintain it.
  • the present disclosure is to provide a heat exchange element having high heat exchange efficiency and a heat exchange type ventilator using the same by eliminating the deviation of air flowing through the heat exchange element by suppressing the blockage of the air passage. To aim.
  • the heat exchange element stacks a plurality of heat transfer plates with a predetermined gap and alternately arranges a charge flow and an exhaust flow in the clearance one by one. Ventilation allows heat exchange between the charge air flow and the exhaust gas flow.
  • the heat exchange element includes flow path ribs that form a flow path for rectifying and ventilating the air supply flow or the exhaust flow into the gap.
  • the flow path rib is formed by raising the heat transfer plate, and has the flow path rib reinforcement in the formed rising portion.
  • the heat exchange element when the temperature difference between the charge air flow and the exhaust gas flow is large, the temperature is transmitted by the heat transfer plate, and either gas of the charge air flow or the exhaust gas flow is cooled, and water droplets condensed on the heat transfer plate surface are generated.
  • the rising portion of the heat transfer plate absorbs the water droplets condensed to lose the necessary strength, and the gap between the flat plates can not be maintained, and the air passage may be blocked.
  • the heat exchange element according to one aspect of the present disclosure has the flow path rib reinforcing material in the flow path rib formed in the gap between the adjacent heat transfer plates, thereby suppressing the blocking of the air path. be able to.
  • FIG. 1 is a schematic view showing an installation example of a heat exchange ventilator according to the first embodiment of the present disclosure.
  • FIG. 2 is a schematic view showing the structure of the heat exchange ventilator according to the first embodiment.
  • FIG. 3 is an exploded view showing the structure of the heat exchange element according to the first embodiment.
  • FIG. 4 is a partial enlarged view showing the structure of the flow path rib according to the first embodiment.
  • FIG. 5 is a partially enlarged view showing the structure of the air gap according to the first embodiment.
  • FIG. 6 is a partially enlarged view showing the fiber direction of the flow path rib reinforcing material according to the first embodiment.
  • FIG. 7 is a partially enlarged view showing another structural example of the flow path rib according to the first embodiment.
  • FIG. 1 is a schematic view showing an installation example of a heat exchange ventilator according to the first embodiment of the present disclosure.
  • FIG. 2 is a schematic view showing the structure of the heat exchange ventilator according to the first embodiment.
  • FIG. 3 is an
  • FIG. 8 is a bird's-eye view showing the structure of a conventional heat exchange element.
  • FIG. 9 is a schematic view showing an installation state of a heat exchange ventilator according to Embodiment 2 of the present disclosure in a house.
  • FIG. 10 is a schematic view showing a structure of a heat exchange type ventilator according to a second embodiment.
  • FIG. 11 is an exploded perspective view showing the structure of the heat exchange element according to the second embodiment.
  • FIG. 12 is a partially enlarged view showing the structure of the flow path rib according to the second embodiment.
  • FIG. 13 is a partially enlarged view showing a structural example of the flow path rib according to the second embodiment.
  • FIG. 14 is a partially enlarged view showing a structural example of flow passage ribs according to a modification of the second embodiment.
  • FIG. 10 is a schematic view showing a structure of a heat exchange type ventilator according to a second embodiment.
  • FIG. 11 is an exploded perspective view showing the structure of the heat exchange element according to the
  • FIG. 15 is a partially enlarged view showing a structural example of flow passage ribs according to a modification of the second embodiment.
  • FIG. 16 is a partially enlarged view showing a structural example of flow passage ribs according to a modification of the second embodiment.
  • FIG. 17 is a schematic view showing an installation state of the heat exchange ventilator according to the third embodiment of the present disclosure.
  • FIG. 18 is a schematic view showing a structure of a heat exchange ventilator according to the third embodiment.
  • FIG. 19 is an exploded perspective view showing the structure of the heat exchange element used in the heat exchange ventilator according to the third embodiment.
  • FIG. 20 is a partially enlarged view showing the structure of flow passage ribs provided in the heat transfer plate of the heat exchange element according to the third embodiment.
  • FIG. 21 is a schematic diagram showing an installation example of a heat exchange type ventilation device provided with a heat exchange element according to Embodiment 4 of the present disclosure.
  • FIG. 22 is a schematic view showing the structure of the heat exchange ventilator according to the fourth embodiment.
  • FIG. 23 is an exploded view showing a structure of the heat exchange element according to the fourth embodiment.
  • FIG. 24 is a partial enlarged view showing the structure of the flow path rib according to the fourth embodiment.
  • FIG. 25 is a schematic view showing the structure of the heat exchange element piece according to the fourth embodiment.
  • FIG. 26 is a schematic view showing the structure of the heat exchange element piece according to the fifth embodiment.
  • FIG. 27A is a partially enlarged view showing a gap according to Embodiment 9.
  • FIG. 27B is a front view of the air gap according to Embodiment 9, viewed from the direction of VIIb.
  • FIG. 27C is a cross-sectional view of the air gap according to the ninth embodiment cut in the direction of VIIc.
  • FIG. 28 is a partial enlarged view showing the fiber direction of the rib reinforcing material according to the tenth embodiment.
  • FIG. 29 is a partial enlarged view showing a structural example of the flow path rib according to the eleventh embodiment.
  • Embodiment 1 In the heat exchange element according to the present disclosure, the plurality of heat transfer plates are stacked by providing a predetermined gap by the spacing member provided on the outer peripheral portion of the heat transfer plate, and the air flow and the exhaust flow are alternately ventilated in the gap. Exchange energy between the charge air flow and the exhaust gas flow.
  • the heat exchange element includes a flow path rib that rises from a heat transfer plate provided in an air supply path that ventilates the air supply flow and an exhaust air path that ventilates the exhaust flow, and forms a flow path in the gap.
  • the surface facing the flow path is covered with a heat transfer plate, and the flow path rib covered with the heat transfer plate has a flow path rib reinforcing material having hygroscopicity.
  • the flow path rib reinforcement With hygroscopicity, the temperature difference between the charge air flow and the exhaust flow is large, the temperature is transmitted by the heat transfer plate, and the gas in either the charge air flow or the exhaust flow is cooled, Even under the condition that water droplets condensed on the surface of the heat transfer plate are generated, the water droplets generated by the flow path rib reinforcing material can absorb the water droplets condensed by the flow channel rib reinforcing material by the generated water droplets coming into contact with each other.
  • the heat transfer plate may have moisture permeability
  • the flow path rib reinforcing material may be made of a material having thermoplasticity
  • the heat transfer plate can absorb the dewdrops generated on the air supply passage and the exhaust passage. Furthermore, since the flow path rib reinforcing material has thermoplasticity, the heat transfer plate and the flow path rib reinforcing material can be directly bonded by thermal welding, so that the moisture diffusion resistance from the heat transfer plate to the flow path rib reinforcing material is reduced. As a result, it is possible to efficiently transmit the condensed water droplets absorbed by the heat transfer plate to the flow path rib reinforcing material.
  • the heat transfer plate may have moisture permeability
  • the heat transfer plate and the flow path rib reinforcement may be bonded by an adhesive having moisture permeability
  • the heat transfer plate can absorb the dewdrops generated in the air supply path and the exhaust path, so that the adhesive can be diffused in humidity, and the dewdrops can be efficiently transmitted to the flow path rib reinforcement.
  • Can. By absorbing the water droplets condensed by the flow path rib reinforcement, the water droplets condensed from the supply air passage and the exhaust air passage are removed, so that the deviation of the air flowing through the heat exchange element can be eliminated. A high heat exchange element can be obtained.
  • the spacing member may be made of a material having lower hygroscopicity than the flow path rib reinforcement.
  • the dew condensation generated in the supply air passage and the exhaust air passage is absorbed by the flow passage rib in a large amount, so that it is possible to suppress the expansion of the spacing member due to the absorption of the condensed water droplets. That is, by suppressing the expansion of the spacing member, it is possible to maintain the predetermined spacing between the heat transfer plates, so it is possible to suppress the deviation of the air flowing through the heat exchange element, and heat exchange with high heat exchange efficiency. An element can be obtained.
  • a gap may be provided between the flow path rib and the adjacent heat transfer plate.
  • channel rib reinforcing material may be configured using paper in which the fiber direction is parallel to the rising direction of the channel rib.
  • Paper has the property of being easily expanded in the direction perpendicular to the fiber direction by absorbing moisture.
  • paper for the flow path rib reinforcement and making the fiber direction of the paper parallel to the rising direction of the flow path rib, when the paper that is the flow path rib reinforcement absorbs moisture in water, the paper is in the fiber direction Expand in the direction perpendicular to the That is, it can be expanded in a direction perpendicular to the rising direction of the flow path rib parallel to the fiber direction.
  • the flow path rib reinforcing material when condensed water droplets are absorbed by the flow path rib reinforcing material, the flow path rib reinforcing material expands in a direction perpendicular to the rising direction of the flow path rib and does not easily expand in the rising direction of the flow path rib .
  • the expansion of the flow path rib in the rising direction it is possible to suppress the pressure loss and deformation of the adjacent heat transfer plate by absorbing the water droplets condensed by the flow path rib. That is, since the distance between the flat plates can be maintained, it is possible to suppress the deviation of the air flowing through the heat exchange element, and to obtain the heat exchange element with high heat exchange efficiency.
  • a heat exchange type ventilator using a heat exchange element may be used.
  • FIG. 1 is a schematic view showing an installation example of a heat exchange type ventilation device 102 according to the first embodiment.
  • a heat exchange ventilator 102 is installed indoors in a house 101.
  • the heat exchange type ventilation device 102 is a device for ventilating while exchanging heat between indoor air and outdoor air.
  • the black arrows indicate an exhaust flow 103 which is a flow of air released indoors and outdoors via the heat exchange ventilator 102.
  • white arrows indicate the air supply flow 104 which is a flow of air taken into the room from the outside through the heat exchange ventilator 102.
  • the heat exchange type ventilator 102 performs ventilation and, at the time of this ventilation, transfers the heat of the exhaust stream 103 to the charge air stream 104 to suppress the release of unnecessary heat.
  • FIG. 2 is a schematic view showing the structure of the heat exchange type ventilator.
  • a heat exchange element 106, an exhaust fan 107, and an air supply fan 110 are disposed in the main body case 105.
  • the heat exchange element 106 is a member for performing heat exchange between the exhaust flow 103 and the charge air flow 104.
  • the heat exchange type ventilator 102 drives the exhaust fan 107 to suck the exhaust stream 103 from the inner air port 108, and discharge the exhaust stream 103 from the exhaust port 109 to the outside via the heat exchange element 106 and the exhaust fan 107.
  • the heat exchange type ventilator 102 drives the air supply fan 110 to suck the air supply flow 104 from the outside air port 111, passes through the heat exchange element 106 and the air supply fan 110, and goes indoors from the air supply port 112. And supply.
  • FIG. 3 is an exploded perspective view showing the structure of the heat exchange element 106. As shown in FIG. 3
  • the heat exchange element 106 is oriented such that the heat exchange element piece 116 having a configuration in which the spacing member 114 and the flow path rib 115 are erected from the heat transfer plate 113 is orthogonal to one another.
  • the configuration is made by laminating a plurality of sheets by changing the.
  • the lamination interval of the heat exchange element piece 116 is maintained by the spacing member 114 coming into contact with the upper and lower heat exchange element pieces 116, and the gap sandwiched by the left and right spacing members 114 and the upper and lower heat transfer plates 113 is a wind. It functions as a road.
  • Heat exchange can be performed between the exhaust gas flow 103 and the charge air flow 104 by alternately flowing the exhaust gas flow 103 and the charge air flow 104 to the air passage.
  • the flow path rib 115 stands from the heat transfer plate 113 at a predetermined interval, and ventilates the surface of the heat transfer plate 113 with a uniform air flow by rectifying the exhaust flow 103 or the air supply flow 104 flowing in the air path. be able to. By this effect, heat can be efficiently transferred between the exhaust flow 103 and the charge flow 104, so that the heat exchange element 106 with high heat exchange efficiency can be obtained.
  • FIG. 4 is a partially enlarged view showing the structure of the flow path rib 115. As shown in FIG.
  • the flow path rib 115 has a quadrangular prism shape, and is formed of a flow path rib reinforcing member 117 and a heat transfer plate 113.
  • the flow path rib reinforcing material 117 is a member for maintaining the strength of the flow path rib 115, and has hygroscopicity.
  • the portion facing the flow path rib side surface 119 and the flow path rib top surface 118 which is the air path surface formed by the flow path rib 115, transfers heat. It is covered by a plate 113.
  • the flow path rib reinforcing material 117 is exposed. That is, the flow path rib 115 has a structure in which the flow path rib reinforcing material 117 having a quadrangular prism shape is accommodated in the rising portion of the heat transfer plate 113 from below. The flow path rib reinforcing material 117 extends in the direction along the air path, similarly to the flow path rib 115.
  • the temperature of the charge air flow 104 is lower than that of the exhaust gas flow 103, the heat of the exhaust gas flow 103 is absorbed by the charge air flow 104 through the heat transfer plate 113, so the temperature of the exhaust gas flow 103 in contact with the heat transfer plate 113 decreases.
  • the surface temperature of the heat transfer plate 113 is lower than the dew point temperature of the exhaust flow 103, the water contained in the exhaust flow 103 is condensed to form water droplets and adheres to the heat transfer plate 113. If water droplets due to condensation remain in the air passage, the air flow resistance around the generated water droplets decreases because the air flow resists the exhaust flow 103 passing through the air passage.
  • the exhaust flow 103 flows with an uneven air volume balance to the heat transfer plate 113, so that the heat exchange efficiency of the heat exchange element 106 is reduced.
  • the condensed water droplets can be removed from the air path by being absorbed by the flow path rib reinforcing material 117, so that an increase in ventilation resistance due to the condensed water droplets can be suppressed.
  • the air volume balance of the exhaust stream 103 flowing through the heat transfer plate 113 can be maintained, and the heat exchange element 106 having high heat exchange efficiency can be obtained.
  • the condensed water droplets are absorbed by the heat transfer plate 113.
  • the water droplets absorbed by the heat transfer plate 113 diffuse inside the heat transfer plate 113 and are absorbed by the flow path rib reinforcing member 117 from the flow path rib top surface 118 or the flow path rib side surface 119.
  • water droplets due to generated condensation are absorbed from the flow path rib bottom surface 120 not covered by the heat transfer plate 113 into the flow path rib reinforcing material 117.
  • the condensed water droplets are absorbed from the flow path rib bottom surface 120 into the flow path rib reinforcing material 117.
  • the heat transfer plate 113 may have moisture permeability in addition to heat conductivity, and the flow path rib reinforcing material 117 may have thermoplasticity.
  • the flow path rib reinforcing material 117 and the heat transfer plate 113 can be heated and pressure-bonded in the manufacturing process of the heat exchange element 106. Water droplets condensed due to moisture permeability of the heat transfer plate 113 are also absorbed by the heat transfer plate 113, and the heat transfer plate 113 is absorbed by the heat transfer plate 113 and the flow path rib reinforcing material 117 being in direct contact with each other. Water due to condensation can be efficiently diffused to the flow path rib reinforcing material 117.
  • the heat transfer plate 113 may have moisture permeability in addition to heat conductivity, and the heat transfer plate 113 and the flow path rib reinforcing material 117 may be bonded by an adhesive having moisture permeability.
  • the channel rib reinforcing material 117 and the heat transfer plate 113 are bonded by a moisture-permeable adhesive, and the heat transfer plate 113 has moisture permeability, so that the condensation is absorbed by the heat transfer plate 113, It can be diffused to the flow path rib reinforcing material 117 efficiently through the adhesive.
  • the spacing member 114 may be formed of a material having lower hygroscopicity than the flow path rib reinforcing member 117.
  • a large amount of condensed water droplets generated on the surface of the heat transfer plate 113 is absorbed by the highly hygroscopic flow path rib reinforcing member 117, whereby the amount of water absorbed by the spacing member 114 can be suppressed.
  • the heat exchange element piece 116 is defined in height by the spacing member 114. Therefore, for example, when water droplets condensed on the surface of the exhaust stream 103 and the heat transfer plate 113 are generated, the distance members 114 absorb the condensed water droplets and the distance members 114 expand toward the adjacent heat transfer plate
  • the air flow path through which the exhaust flow 103 flows is wide, and the size differs from the air flow path through which the other air supply flow 104 flows. As a result, the amount of air passing through the heat exchange element piece 116 of each of the exhaust flow 103 and the charge air flow 104 varies, thereby reducing the heat exchange efficiency of the heat exchange element 106.
  • the amount of water absorbed by the spacing member 114 can be suppressed, so expansion of the spacing member 114 can be suppressed even when a large amount of water droplets are condensed, and the heat exchange element pieces 116 Maintain a gap of That is, since variations in the amount of air passing through the heat exchange element piece 116 can be suppressed, it is possible to obtain the heat exchange element 106 having high heat exchange efficiency even under dew condensation conditions.
  • FIG. 5 is a partially enlarged view showing the structure of the air gap 122. As shown in FIG. 5
  • a gap 122 may be provided between the flow path rib 115 and the adjacent heat transfer plate 113.
  • the flow path rib reinforcing material 117 absorbs the water droplets condensed and expands, the flow path ribs 115 expand toward the adjacent heat transfer plate 113. Even in such a case, the expansion volume integral of the flow path rib 115 is absorbed by the gap 122 between the flow path rib 115 and the heat transfer plate 113 provided in the heat exchange element piece 116 located above and below. be able to. That is, expansion of the flow path rib 115 can prevent the upper and lower heat exchange element pieces 116 from colliding with each other and colliding with the upper and lower heat exchange element pieces 116.
  • the gap between the heat exchange element pieces 116 can be maintained, and variations in the air volume passing through the heat exchange element piece 116 can be suppressed, so that the heat exchange element 106 having high heat exchange efficiency can be obtained even under dew condensation conditions. .
  • FIG. 6 is a partially enlarged view showing the fiber direction 123 of the flow path rib reinforcing material 117. As shown in FIG.
  • the flow path rib reinforcing material 117 may be configured using paper in which the fiber direction 123 is parallel to the rising direction of the flow path rib 115.
  • expansion of the flow path rib 115 can prevent the upper and lower heat exchange element pieces 116 from colliding with each other and deforming the upper and lower heat exchange element pieces 116. That is, since the gap between the heat exchange element pieces 116 can be maintained, it is possible to suppress the variation of the air volume passing through the heat exchange element piece 116, and to obtain the heat exchange element 106 having high heat exchange efficiency even under dew condensation conditions.
  • heat exchange element 106 of the above configuration may be used as the heat exchange type ventilator 102.
  • the heat exchange element 106 with high heat exchange efficiency can be used even when the temperature / humidity difference is large inside and outside the room and dew condensation occurs on the surface of the heat transfer plate 113, so the heat exchange efficiency is high.
  • a heat exchange ventilator 102 can be obtained.
  • the heat transfer plate 113 is a thin sheet having heat conductivity, and may be of a nature that does not allow gas to permeate. Furthermore, when the heat transfer plate 113 is provided with moisture permeability, as described above, it is easy to diffuse the water into the flow path rib reinforcing material 117, and the following effects can also be obtained. That is, for example, when the exhaust flow 103 condenses and water droplets are generated, the water contained in the exhaust flow 103 can be diffused to the charge air flow 104, so the amount of condensed water generated from the exhaust flow 103 can be reduced. It is more preferable.
  • a resin sheet having no moisture permeability such as metal, polypropylene, polyethylene, or polystyrene can be used.
  • a moisture-permeable resin film or a cellulose fiber based on polyethylene terephthalate, a cellulose fiber, a ceramic fiber, a paper material based on glass fiber, etc. can be used.
  • a paper material based on cellulose fiber is more suitable because it is easy to bend and to easily cover the flow path rib reinforcement 117.
  • a resin material such as polypropylene, polyethylene, polyethylene terephthalate, etc., or a paper material or metal based on cellulose fiber, ceramic fiber, glass fiber may be used if it has a certain strength. it can.
  • thermoplastic resin when used as the flow path rib reinforcing material 117, the type of resin may be, for example, polyvinyl acetate, ethylene-vinyl alcohol copolymer resin, etc., so that thermoplasticity and hygroscopicity can be compatible. is there.
  • moisture-permeable adhesive for bonding the flow path rib reinforcing material 117 and the heat transfer plate 113 for example, one having a hydrophilic functional group based on a polyurethane-based adhesive or an epoxy resin-based adhesive Can be mentioned.
  • the distance is designed according to the standing dimension and moisture absorption rate of the flow path rib reinforcing material 117. For example, when the moisture absorption rate in the standard state is 20%, by providing a gap corresponding to 20% of the standing dimension, the upper side adjacent to the flow path rib 115 even if the flow path rib reinforcement 117 absorbs moisture to the maximum.
  • the heat transfer plate 113 is only in contact with the heat transfer plate 113, and deformation of the air passage can be suppressed.
  • the structure of the spacing member 114 may be, for example, the same structure as the flow path rib 115 in addition to the structure in which the above-mentioned material is provided on the heat transfer plate 113. With the same structure, the manufacturing process can be omitted, and productivity can be improved. In this case, in order to form the spacing member 114 of a material having lower hygroscopicity than the flow path rib reinforcing material 117 as described above, for example, the hygroscopicity of the reinforcing material in the spacing member 114 is higher than that of the flow path rib reinforcing material 117 It can be realized by lowering it.
  • the adhesion between the flow path rib reinforcing material 117 and the heat transfer plate 113 may be partially provided with an adhesion surface or may be adhered over the entire contact surface.
  • the heat transfer plate 113 absorbs the water droplets due to the generated condensation, and the generated water droplets are transmitted to the flow path rib reinforcing material 117 by diffusion, by adhering the entire surface, the area through which the generated water droplets can pass increases.
  • the moisture permeation resistance from the heat plate 113 to the flow path rib reinforcement member 117 is reduced, which is more preferable.
  • the flow path rib reinforcing material 117 is clearly shown as a single member, the same effect can be obtained even if it is made of a composite material.
  • a corrugated cardboard sheet 126 as the flow path rib reinforcing material 117 will be described.
  • FIG. 7 is a partially enlarged view showing another structural example of the flow path rib 115. As shown in FIG. 7
  • the corrugated cardboard sheet 126 which is an example of the flow path rib reinforcing material 117, has a structure in which the core 125 is sandwiched between the two liners 124 and is covered by the heat transfer plate 113.
  • the flow path rib reinforcement 117 can be provided with hygroscopicity.
  • the spacing member 114 may have the same configuration as the flow path rib 115. That is, the spacing member 114 may have a structure including a reinforcing member made of a composite material and the heat transfer plate 113.
  • Second Embodiment As a structure of the heat exchange element used for the conventional heat exchange type ventilator, what was described, for example in patent document 1 in order to improve productivity is known.
  • the heat exchange element 1001 is configured by laminating a large number of flat plates 1002 having heat conductivity.
  • the flat plate 1002 is provided with a plurality of rising portions 1003 which are erected in the vertical direction with respect to the flat plate 1002 and longitudinally cut on the flat plate 1002 at predetermined intervals in parallel.
  • the rising portion 1003 creates a gap between a pair of flat plates stacked adjacent to each other to form an air passage.
  • the heat exchange element 1001 is formed such that a plurality of gaps are stacked, and the blowing directions of the respective air passages in the adjacent gaps are configured to be orthogonal to each other.
  • the rising portion 1003 of the flat plate 1002 is formed by bending the flat plate 1002 into a mountain shape.
  • a powder adhesive is printed in a band shape in advance in a portion where the flat plates 1002 contact with each other by bending the flat plate 1002, and the rising portions 1003 are joined by bending in a mountain shape and then heating.
  • the flat plate having the heat conductivity and the hygroscopicity is bent in a mountain shape, and the rising portion is provided to maintain the distance between the flat plates. Therefore, with the expansion and contraction of the flat plate due to the temperature and humidity change, the height of the rising portion of the flat plate is changed. When the height of the rising portion changes, partial deformation occurs in the cross section of the air passage, which causes the air flowing through the heat exchange element to be uneven, and thus has a problem that the heat exchange efficiency is lowered.
  • the present disclosure eliminates the deviation of air flowing through the heat exchange element by suppressing the partial deformation of the air passage cross section caused by the expansion and contraction of the rising portion of the flat plate, and a heat exchange element having high heat exchange efficiency. And it aims at providing a heat exchange type ventilator using it.
  • a plurality of heat transfer plates are stacked with a predetermined gap, and in the plurality of gaps formed by the plurality of heat transfer plates, the charge air flow and the exhaust flow are alternately orthogonal.
  • the air is ventilated so as to be adjacent to each other, and heat exchange between the charge air flow and the exhaust gas flow is performed via the heat transfer plate.
  • the gap is formed by a flow path rib rising from the heat transfer plate, and forms an air flow path of the supply air flow and the exhaust flow in the space.
  • the flow path rib is configured such that the heat transfer plate covers the flow path rib reinforcing material, and the flow path rib reinforcing material is formed of a material whose expansion ratio due to temperature and humidity changes is smaller than that of the heat transfer plate.
  • the contraction of the flow path rib due to the temperature and humidity change can be suppressed. That is, the contraction of the height of the rib is reduced by the flow path rib reinforcing material, and the partial deformation of the air passage cross section is suppressed, so that the air passing through the air passage can be uniformly blown without bias. Therefore, the heat exchange efficiency can be maintained high by blowing the inside of the air passage of the heat exchange element at a uniform wind speed and pressure.
  • the flow path rib may be formed by adhesion of the flow path rib reinforcing material and the heat transfer plate.
  • the heat transfer plate can be fixed to the flow path rib reinforcing material having a smaller expansion and contraction ratio to the temperature and humidity change than the heat transfer plate. That is, since the flow path rib reinforcement and the heat transfer plate are adhered and fixed, the expansion and contraction of the height of the portion covering the flow path rib in the heat transfer plate and the generation of wrinkles are reduced, and By suppressing the deviation of the cross section, the air passing through the air passage can be uniformly blown without deviation. Therefore, the heat exchange efficiency can be maintained high by blowing the inside of the air passage of the heat exchange element at a uniform wind speed and pressure.
  • the adhesive used for bonding the flow path rib reinforcing material and the heat transfer plate may be disposed at a position to be the bottom surface in the rising direction of the flow path rib.
  • FIG. 9 is a schematic view showing an installation state of a heat exchange type ventilator 202 according to Embodiment 2 in a house.
  • a heat exchange ventilator 202 is installed indoors in the house 201.
  • the heat exchange type ventilation device 202 is a device that performs ventilation while exchanging heat between indoor air and outdoor air.
  • the black arrows indicate an exhaust flow 203 which is a flow of air released indoors and outdoors through the heat exchange ventilator 202.
  • white arrows indicate the air supply flow 204 which is a flow of air taken into the room from the outside through the heat exchange ventilator 202.
  • the heat exchange type ventilator 202 ventilates by moving the air inside and outside the room, and at the time of this ventilation, transfers the heat of the exhaust flow 203 to the charge air flow 204 to suppress the release of the heat in the room.
  • FIG. 10 is a schematic view showing the structure of the heat exchange ventilator 202.
  • a heat exchange element 206 In the main body case 205, a heat exchange element 206, an exhaust fan 207, and an air supply fan 210 are disposed.
  • the heat exchange element 206 is a member for performing heat exchange between the exhaust flow 203 and the charge flow 204.
  • the heat exchange type ventilator 202 drives the exhaust fan 207 to suck the exhaust flow 203 from the inner air port 208, and discharge the exhaust stream 203 from the exhaust port 209 to the outside via the heat exchange element 206 and the exhaust fan 207.
  • the heat exchange type ventilator 202 drives the air supply fan 210 to suck the air supply flow 204 from the outside air port 211, and passes the heat exchange element 206 and the air supply fan 210 to go indoors from the air supply port 212. And supply.
  • FIG. 11 is an exploded perspective view showing the structure of the heat exchange element 206.
  • the heat exchange element 206 is formed by laminating a plurality of heat exchange element pieces 215 having a configuration in which the flow path ribs 214 are erected from the heat transfer plate 213 in the thickness direction of the heat transfer plate 213. It is formed of The heat exchange element pieces 215 are stacked in different directions so that the longitudinal directions of the flow path ribs 214 are orthogonal to each other. A gap formed by laminating the heat exchange element piece 215 is formed by the flow path rib 214 contacting the heat transfer plate 213 of the adjacent heat exchange element piece 215. That is, the heat exchange element 206 shown in FIG.
  • Heat exchange can be performed between the exhaust gas flow 203 and the charge air flow 204 by alternately flowing the exhaust gas flow 203 and the charge air flow 204 in the air path one by one.
  • the flow path ribs 214 rise from the heat transfer plate 213 at predetermined intervals, and ventilate the surface of the heat transfer plate 213 with a uniform air flow by rectifying the exhaust flow 203 or the air supply flow 204 flowing in the air path. be able to.
  • the heat exchange element 206 with high heat exchange efficiency can be obtained.
  • FIG. 12 is a partially enlarged view showing the structure of the flow path rib 214.
  • the flow path rib 214 has a quadrangular prism shape, and includes a flow path rib reinforcement 216 and a heat transfer plate 213.
  • the flow path rib reinforcing member 216 is a member for maintaining the strength of the flow path rib 214, and the expansion and contraction ratio to the temperature and humidity change is smaller than that of the heat transfer plate 213.
  • the portion facing the flow path rib side surface 218 and the flow path rib top surface 217 which become the air path surface formed by the flow path rib 214, transfers heat. It is covered by a plate 213.
  • the flow path rib reinforcement 216 is exposed. That is, the flow path rib 214 has a structure in which the flow path rib reinforcing material 216 having a quadrangular prism shape is accommodated in the rising portion of the heat transfer plate 213 from below.
  • the flow path rib reinforcement 216 extends in the direction along the air path, similarly to the flow path rib 214.
  • the humidity of the air supply flow is lower than the humidity of the exhaust flow
  • the flat plate 1002 has a property of shrinking under low humidity conditions.
  • the flat plate 1002 on the surface of the rising portion 1003 in contact with the air supply flow tends to contract more than the flat plate 1002 on the surface of the rising portion 1003 in contact with the exhaust flow. Therefore, the flat plate 1002 on the surface of the rising portion 1003 in contact with the air supply flow exerts a force in a direction to lower the height of the rising portion 1003 in contact with the air supply flow.
  • the height of the rising portion 1003 in contact with the air supply flow contacts the exhaust flow due to the force acting in the direction to lower the height of the rising portion 1003 in contact with the air supply flow.
  • the height is lower than the height of the rising portion 1003. That is, since a difference in the height of the air passage cross section occurs between the air passage of the air supply flow and the air passage of the exhaust flow, the heat exchange element 1001 is generated by the air supply flow and the exhaust flow flowing with an uneven air volume balance. Heat exchange efficiency is reduced.
  • the flow path rib 214 according to the second embodiment shown in FIG. 11 has a structure in which the heat transfer plate 213 covers the flow path rib reinforcing material 216 whose expansion ratio to the temperature and humidity change is smaller than that of the heat transfer plate 213. Therefore, the flow path rib reinforcing material 216 can suppress the contraction of the heat transfer plate 213 due to the decrease in humidity. Thereby, the contraction of the height of the flow path rib 214 is reduced, and it is possible to suppress the partial change of the air passage cross section in the air passage of the supply flow 204 and the air passage of the exhaust flow 203. Therefore, the air volume balance of the air supply flow 204 and the exhaust flow 203 flowing through the heat transfer plate 213 can be maintained, and the heat exchange element 206 with high heat exchange efficiency can be obtained.
  • FIG. 13 is a partially enlarged view showing a structural example of the flow path rib 214.
  • the contact surface between the heat transfer plate 213 and the flow path rib reinforcing material 216 may be bonded by an adhesive 221.
  • the heat transfer plate 213 expands due to temperature and humidity changes, the heat transfer plate 213 is wrinkled on the surface of the flow path rib 214.
  • the adhesive force suppresses the formation of wrinkles of the heat transfer plate 213, and prevents the height change and variation of the minute ribs derived from the wrinkles. Can.
  • FIG. 14 is a partial enlarged view showing a structural example of the flow path rib 214.
  • the adhesive 221 C used for bonding the heat transfer plate 213 and the flow path rib reinforcing material 216 may be disposed at the boundary between the flow path rib bottom surface 219 and the heat transfer plate bottom surface 222. With this configuration, it is possible to prevent the surface of the flow path rib 214 from swelling due to the unevenness of the amount of the adhesive 221C used for bonding the flow path rib reinforcement 216 and the heat transfer plate 213, and the cross-sectional shape of the flow path rib 214 It can be made uniform.
  • the heat transfer plate 213 may be a thin sheet having heat conductivity, and may be of a nature that does not allow gas permeation.
  • a resin sheet having no moisture permeability such as metal, polypropylene, polyethylene, or polystyrene can be used.
  • a material having moisture permeability a moisture-permeable resin film or a cellulose fiber based on polyurethane or polyethylene terephthalate, a paper material based on a ceramic fiber, a glass fiber or the like can be used.
  • a paper material based on cellulose fiber is more preferable because it is easy to bend and easy to cover the flow path rib reinforcement 216.
  • the material of the flow path rib reinforcing material 216 is less in dimensional change due to moisture absorption and release than the heat transfer plate 213, and can be used if it has a certain strength, and resin members such as polypropylene, polyethylene, polyethylene terephthalate or cellulose fibers Ceramic fibers, paper materials based on glass fibers or metals can be used.
  • FIG. 15 is a partially enlarged view showing a structural example of the flow path rib 214A according to the modification.
  • the flow path rib 214A is a flow path rib which becomes two side surfaces (the air path surface formed by the flow path rib 214A) of the surface of the flow path rib reinforcing member 216A having a substantially triangular prism shape.
  • the portion facing the side surface 218A) is covered with the heat transfer plate 213A.
  • the flow path rib reinforcement 216A is exposed at the rib bottom surface 219A and the flow path rib end surface 220A. That is, the flow path rib 214A has a structure in which the flow path rib reinforcing material 216A having a substantially triangular prism shape is stored from below in the rising portion of the heat transfer plate 213A.
  • the contact surface between the heat transfer plate 213A and the flow path rib reinforcement 216A is bonded by an adhesive 221A.
  • the flow path rib top surface 217A is configured by a portion obtained by bending the heat transfer plate 213A in a convex shape, the movement of the heat transfer plate 213A with respect to the flow path rib reinforcement 216A is unlikely to occur in the flow path rib top surface 217A.
  • the heat transfer plate 213A is firmly adhered to the flow path rib reinforcement 216A.
  • FIG. 16 is a partially enlarged view showing a structural example of a flow path rib 214B according to another modification.
  • the portion facing the flow path rib side surface 218B and the flow path rib top surface 217B which is the air path surface formed by the flow path rib 214B, It is covered by a heat transfer plate 213B.
  • the flow path rib reinforcement 216B is exposed at the flow path rib bottom surface 219B and the flow path rib end surface 220B.
  • the contact surface between the heat transfer plate 213B and the flow path rib reinforcing material 216B is bonded by the adhesive 221B.
  • the shape of the flow path rib reinforcing member 216B is a substantially quadrangular prism shape, and in the flow path rib top surface 217B of the side surfaces of the substantially quadrangular prism shape, a concave portion is uniformly provided along the longitudinal direction. ing. Further, the surface provided with the recess is bonded to the heat transfer plate 213B at the flow path rib top surface 217B.
  • the flow path rib 214B has a structure in which the flow path rib reinforcing material 216B having a substantially square pole shape is accommodated from below in the rising portion of the heat transfer plate 213B.
  • the recessed portion is provided in the flow path rib reinforcing member 216B in the flow path rib top surface 217B, a portion in which the heat transfer plate 213B is bent in a convex shape is generated at both ends of the flow path rib top surface 217B.
  • the movement of the heat transfer plate 213B with respect to the flow path rib reinforcing material 216B is less likely to occur, and the heat transfer plate 213B is firmly adhered to the flow path rib reinforcing material 216B.
  • the heat transfer plate 213B is firmly bonded to the flow passage rib reinforcing member 216B on the flow passage rib top surface 217B, expansion and contraction of the heat transfer plate 213B on the flow passage rib top surface 217B and generation of wrinkles are further suppressed.
  • the variation in height of the flow path rib 214B resulting from the change in height of the wrinkles is suppressed.
  • the heat exchange element 1001 is configured by laminating a large number of flat plates 1002 having heat conductivity and hygroscopicity.
  • the flat plate 1002 is provided with a plurality of rising portions 1003 which are erected in the vertical direction with respect to the flat plate 1002 and longitudinally cut on the flat plate 1002 at predetermined intervals in parallel.
  • the rising portion 1003 creates a gap between a pair of flat plates stacked adjacent to each other to form an air passage.
  • the heat exchange element 1001 is formed such that a plurality of gaps are stacked, and the blowing directions of the air passages in the adjacent gaps are configured to be orthogonal to each other.
  • the rising portion 1003 of the flat plate 1002 is formed by bending the flat plate 1002 into a mountain shape.
  • a powder adhesive is printed in a band shape in advance in a portion where the flat plates 1002 contact with each other by bending the flat plate 1002, and the rising portions 1003 are joined by bending in a mountain shape and then heating.
  • the flat plate having the heat conductivity and the hygroscopicity is raised to maintain the distance between the flat plates. Therefore, when the temperature difference between the inside and outside of the room is large, there is a problem that condensation occurs and blocks the air path when the air flow formed by a plurality of stacked flat plates exchanges heat between the air supply flow and the exhaust flow. Was.
  • the strength necessary for maintaining the distance between the flat plates is lost by absorbing the water droplets condensed by the rising portions of the flat plates, the air path may be crushed to cause the flow through the heat exchange element. There is a problem that the air is biased and the heat exchange efficiency is lowered.
  • the present disclosure eliminates the blockage of the air passage due to dew condensation, thereby eliminating the bias of the air flowing through the heat exchange element, and a heat exchange element having high heat exchange efficiency and a heat exchange ventilator using the same. Intended to be provided.
  • the plurality of heat transfer plates are stacked by providing a predetermined gap by the spacing member provided on the outer peripheral portion of the heat transfer plate, and the air flow and the exhaust flow are alternately ventilated in the gap. Exchange energy between the charge air flow and the exhaust gas flow.
  • the heat transfer plate provided in the air supply air path for ventilating the air supply flow and the exhaust air flow path for ventilating the exhaust flow forms a flow path rib which rises from the base surface of the heat transfer plate to form a flow path in the gap;
  • a flow path rib reinforcing material having hygroscopicity is provided inside the flow path rib, and a base surface on which the flow path rib is erected and a side surface of the flow path rib reinforcement are adhered.
  • the flow path rib reinforcement in the flow path rib formed in the gap between the adjacent heat transfer plates is hygroscopic, whereby the gas in either the charge air flow or the exhaust flow is cooled, and the heat transfer is generated.
  • the channel rib reinforcement can absorb the generated water droplets even under the condition that the water droplets condensed on the surface of the plate are generated.
  • the flow path rib has a configuration in which the base surface upstanding the flow path rib adheres to the side surface of the flow path rib reinforcement, an adhesive is provided between the side surface of the flow path rib reinforcement and the flow path rib side surface By not being disposed, it is possible to widen the effective area of the flow path rib reinforcing material that absorbs condensed water droplets.
  • the base surface and the side surface of the flow path rib reinforcing material are bonded by a water resistant adhesive.
  • a heat exchange type ventilator using a heat exchange element may be used.
  • FIG. 17 is a schematic view showing the installation state of the heat exchange type ventilation device 302 according to the third embodiment.
  • a heat exchange ventilator 302 is installed indoors in a house 301.
  • the heat exchange type ventilation device 302 is a device that performs ventilation while exchanging heat between indoor air and outdoor air.
  • the black arrows indicate an exhaust flow 303 which is a flow of air released indoors and outdoors through the heat exchange ventilator 302.
  • white arrows indicate the air supply flow 304 which is a flow of air taken into the room from the outside through the heat exchange ventilator 302.
  • the heat exchange type ventilation device 302 performs ventilation, and at the time of this ventilation, transfers the heat of the exhaust flow 303 to the charge flow 304 to suppress the release of the heat.
  • FIG. 18 is a schematic view showing the structure of the heat exchange type ventilation device 302. As shown in FIG.
  • a heat exchange element 306, an exhaust fan 307, and an air supply fan 310 are disposed in the main body case 305.
  • the heat exchange element 306 is a member for performing heat exchange between the exhaust flow 303 and the charge flow 304.
  • the heat exchange type ventilation device 302 drives the exhaust fan 307 to suck the exhaust flow 303 from the inner air port 308, and discharge the exhaust flow 303 from the exhaust port 309 to the outside via the heat exchange element 306 and the exhaust fan 307.
  • the heat exchange type ventilator 302 drives the air supply fan 310 to suck the air supply flow 304 from the outside air opening 311, and passes the heat exchange element 306 and the air supply fan 310 to go indoors from the air supply opening 312. And supply.
  • FIG. 19 is an exploded perspective view showing the structure of the heat exchange element 306. As shown in FIG.
  • the heat exchange element 306 is oriented such that the heat exchange element piece 316, which is a configuration in which the spacing member 314 and the flow path rib 315 are erected from the heat transfer plate 313, is alternately orthogonal to each other.
  • the configuration is made by laminating a plurality of sheets by changing the.
  • the lamination interval of the heat exchange element piece 316 is maintained by the spacing member 314 coming into contact with the upper and lower heat exchange element pieces 316, and the gap sandwiched by the left and right spacing members 314 and the upper and lower heat transfer plates 313 is a wind. It functions as a road.
  • Heat exchange can be performed between the exhaust flow 303 and the supply flow 304 by alternately flowing the exhaust flow 303 and the supply flow 304 one by one to the air path.
  • the flow path ribs 315 rise from the base surface 323 of the heat transfer plate 313 at predetermined intervals, and are uniform to the surface of the heat transfer plate 313 by rectifying the exhaust flow 303 or the air supply flow 304 flowing in the air path. It can be ventilated by the air volume. By this effect, heat can be efficiently transferred between the exhaust flow 303 and the charge flow 304, so that the heat exchange element 306 with high heat exchange efficiency can be obtained.
  • FIG. 20 is a partially enlarged view showing the structure of the flow path rib 315. As shown in FIG.
  • the flow path rib 315 has a quadrangular prism shape, and is formed of a flow path rib reinforcement 317 and a heat transfer plate 313.
  • the flow path rib reinforcement 317 is a member for maintaining the strength of the flow path rib 315, and has hygroscopicity.
  • the portion facing the flow path rib side surface 319 and the flow path rib top surface 318 which is the air path surface formed by the flow path rib 315, transfers heat. It is covered by a plate 313.
  • the flow path rib reinforcement 317 is exposed.
  • the flow path rib 315 has a structure in which the flow path rib reinforcing material 317 having a quadrangular prism shape is stored in the rising portion of the heat transfer plate 313 from below.
  • the flow path rib reinforcement 317 extends in the direction along the air path, similarly to the flow path rib 315.
  • the base surface 323 of the heat transfer plate 313 and the side surface of the flow path rib reinforcing member 317 are bonded by the bonding portion 322.
  • the heat transfer plate 313 and the flow path rib reinforcement 317 are bonded and fixed to form the flow path rib 315.
  • the base surface 323 of the heat transfer plate 313 is a surface located below the heat transfer plate 313 in the vertical direction, and the heat transfer which is not erected by the flow path rib 315 It is the surface of the plate 313. That is, the bonding portion 322 is a boundary portion between the base surface 323 of the heat transfer plate 313 and the rising portion.
  • the temperature of the charge air flow 304 is lower than that of the exhaust gas flow 303, the heat of the exhaust gas flow 303 is absorbed by the charge air flow 304 via the heat transfer plate 313, so the temperature of the exhaust gas flow 303 in contact with the heat transfer plate 313 decreases.
  • the surface temperature of the heat transfer plate 313 is lower than the dew point temperature of the exhaust flow 303, the water contained in the exhaust flow 303 is condensed to form water droplets and adheres to the heat transfer plate 313. If water droplets due to condensation remain in the air passage, the air flow resistance around the generated water droplets decreases because the air flow resists the exhaust flow 303 passing through the air passage.
  • the exhaust flow 303 flows to the heat transfer plate 313 with an uneven air volume balance, so that the heat exchange efficiency of the heat exchange element 306 is reduced.
  • the condensed water droplets can be removed from the air path by being absorbed by the flow path rib reinforcing member 317. Therefore, an increase in ventilation resistance due to the condensed water droplets can be suppressed. As a result, the air volume balance of the exhaust flow 303 flowing through the heat transfer plate 313 can be maintained, and the heat exchange element 306 having high heat exchange efficiency can be obtained.
  • the condensed water droplets are absorbed by the heat transfer plate 313.
  • the water droplets absorbed by the heat transfer plate 313 diffuse inside the heat transfer plate 313 and are absorbed by the flow path rib reinforcing member 317 from the flow path rib top surface 318 or the flow path rib side surface 319.
  • water droplets due to generated condensation are absorbed from the flow path rib bottom surface 320 not covered by the heat transfer plate 313 into the flow path rib reinforcement 317.
  • the condensed water droplets are absorbed from the flow path rib bottom surface 320 into the flow path rib reinforcing material 317.
  • the base surface 323 of the heat transfer plate 313 and the side surface of the flow path rib reinforcing member 317 are bonded by the bonding portion 322.
  • the heat transfer plate 313 and the flow path rib reinforcement 317 are bonded and fixed to form the flow path rib 315.
  • the adhesive is not disposed between the side surface of the flow path rib reinforcing member 317 and the flow path rib side surface 319, it is possible to widen the effective area capable of absorbing the condensed water droplets.
  • the base surface 323 of the heat transfer plate 313 and the side surface of the flow path rib reinforcement 317 are bonded by the bonding portion 322.
  • the heat transfer plate 313 and the flow path rib reinforcing member 317 are bonded and fixed, and the flow path rib 315 is configured.
  • the adhesive used for bonding the flow path rib reinforcing material 317 and the heat transfer plate 313 protrudes from the surface of the flow path rib 315 forming the air path. Accordingly, the surface of the flow path rib 315 can be prevented from swelling due to the unevenness of the amount of adhesive, and the size of the flow path rib 315 can be made uniform.
  • the heat exchange efficiency can be maintained high by blowing the inside of the air passage of the heat exchange element 306 at a uniform wind speed and pressure.
  • the adhesive used for the adhesive portion 322 may be a water resistant adhesive.
  • heat exchange element 306 of the above configuration may be used as the heat exchange type ventilator 302.
  • the heat exchange element 306 with high heat exchange efficiency can be used even when condensation is generated on the surface of the heat transfer plate 313 because the temperature / humidity difference is large inside and outside the room, so the heat exchange efficiency is high.
  • a heat exchange ventilator 302 can be obtained.
  • the heat transfer plate 313 may be a thin sheet having heat conductivity, and may be of a nature that does not allow gas to permeate. Furthermore, when moisture permeability is provided, it becomes easy to diffuse water in the flow path rib reinforcing material 317 as described above, and for example, when the exhaust flow 303 condenses and water droplets are generated, the moisture of the exhaust flow 303 is supplied Since it can be diffused to 304, the amount of condensed water generated from the exhaust flow 303 can be reduced, which is more preferable.
  • a resin sheet having no moisture permeability such as metal, polypropylene, polyethylene, or polystyrene can be used.
  • a moisture-permeable resin film or a cellulose fiber based on polyethylene terephthalate, a cellulose fiber, a ceramic fiber, a paper material based on glass fiber, etc. can be used.
  • a paper material based on cellulose fiber is more preferable because it is easy to bend and easy to cover the flow path rib reinforcement 317.
  • a resin material such as polypropylene, polyethylene, polyethylene terephthalate, etc., or a paper material or metal based on cellulose fiber, ceramic fiber, glass fiber can be used if it has a certain strength. it can.
  • thermoplastic resin when used as the flow path rib reinforcing material 317, the type of resin may be, for example, polyvinyl acetate, ethylene-vinyl alcohol copolymer resin, etc., so that thermoplasticity and hygroscopicity can be compatible. is there.
  • an acrylic resin emulsion adhesive having water resistance among water-based adhesives, or vinyl acetate Solvent-based adhesives such as resin-based solvent-type adhesives and acrylic resin-based solvent-type adhesives, or self-reactive adhesives such as urethane resin, epoxy resin, silicone resin, ethylene vinyl acetate co-use by heat melting Hot melt adhesives such as polymeric resins are mentioned.
  • the structure of the spacing member 314 may be, for example, the same structure as the flow path rib 315 in addition to the structure in which the above-mentioned material is provided on the heat transfer plate 313. With the same structure, the manufacturing process can be omitted, and productivity can be improved.
  • Embodiment 4 As a structure of the heat exchange element used for the conventional heat exchange type ventilator, what was described, for example in patent document 1 in order to improve productivity is known.
  • the heat exchange element 1001 is configured by laminating a plurality of heat conductive flat plates 1002 having a plurality of rising portions 1003 arranged in parallel.
  • the flat plates 1002 are alternately turned so that the air passages between the rising portions 1003 are orthogonal to each other and stacked, and the distance between the flat plates 1002 is maintained by the rising portions 1003.
  • the air flow between the rising portions 1003 alternately ventilate between the air supply flow and the exhaust flow for each flat plate 1002, and heat exchange is performed between the air supply flow and the exhaust flow.
  • powder adhesive is printed in a strip shape on the flat plate 1002 in advance, and the printed portion is bent in a mountain shape and heated, and the flat plates 1002 bent in a mountain shape are joined by the powder adhesive to form a rising portion 1003 doing.
  • the rising portion 1003 of the flat plate 1002 absorbs the water droplets condensed to lose the strength necessary to maintain the interval between the flat plates 1002 and the air path is crushed, and the air flowing through the heat exchange element 1001 has a bias. It had the subject that it arose and heat exchange efficiency fell.
  • the present disclosure eliminates the blockage of the air passage due to dew condensation, thereby eliminating the bias of the air flowing through the heat exchange element, and a heat exchange element having high heat exchange efficiency and a heat exchange ventilator using the same. Intended to be provided.
  • a plurality of heat transfer plates are stacked with a predetermined gap provided by a spacing member provided on the outer peripheral portion of the heat transfer plate,
  • the exhaust flow is alternately ventilated for each heat transfer plate to exchange energy between the charge flow and the exhaust flow.
  • the heat transfer plate has moisture permeability.
  • the heat exchange element includes a flow path rib and a flow path rib reinforcement. The flow path rib is formed by protruding the heat transfer plate in the gap in the direction parallel to the spacing member, and forms a flow path for ventilating the air supply flow or the exhaust flow.
  • the surface of the flow path rib on the flow path side is covered with the heat transfer plate, and the inside of the flow path rib covered with the heat transfer plate has higher hygroscopicity than the heat transfer plate.
  • the heat transfer plate has irregularities formed in a direction not parallel to the direction in which the flow path rib is provided on the surface facing the flow path.
  • the air supply flow or the exhaust flow ventilates the flow path formed by the flow path rib of the heat transfer plate.
  • the charge air flow and the exhaust gas flow are alternately ventilated for each heat transfer plate, and energy exchange between the charge air flow and the exhaust gas flow is performed.
  • the temperature difference between the charge air flow and the exhaust gas flow is large, condensation occurs and water droplets are generated on the heat transfer plate. Since the heat transfer plate has moisture permeability, the water droplets pass through the heat transfer plate and are absorbed by the flow path rib reinforcing material having water absorption.
  • the flow path rib reinforcing material absorbs the water droplets condensed to remove the water droplets condensed from the supply air passage and the exhaust air passage, so that the deviation of the air flowing through the heat exchange element can be eliminated. There is an effect that a heat exchange element with high exchange efficiency can be obtained.
  • the water droplets generated on the heat transfer plate enter the concavo-convex recess formed in the direction non-parallel to the flow path rib.
  • the water droplets entering the recess are pushed by the pressure of the charge or exhaust flow. Since the recess is formed non-parallel to the flow path rib, the water droplet reaches the flow path rib.
  • the water droplets that reach the flow path ribs pass through the heat transfer plate. Water droplets that have passed through the heat transfer plate are absorbed by the flow path rib reinforcing agent.
  • water droplets generated on the heat transfer plate can be reliably absorbed by the flow path rib reinforcing material. Therefore, by suppressing the blockage of the air passage due to the dew condensation, it is possible to eliminate the deviation of the air flowing through the heat exchange element, and to prevent the reduction of the heat exchange efficiency.
  • the heat transfer plate may be formed of a heat transfer paper having hygroscopicity and in which the fiber direction is oriented in a certain direction, and the flow path rib may be provided in a direction not parallel to the fiber direction.
  • the flow path rib may be provided in a direction oblique to the fiber direction.
  • the flow path rib may be provided in the direction orthogonal to the fiber direction.
  • heat transfer plate and the flow path rib reinforcement may be bonded by an adhesive having moisture permeability.
  • the flow path rib reinforcing material may be made of a heat-softening material that is softened by heating.
  • the spacing member may be made of a material that is less hygroscopic than the flow path rib reinforcement.
  • the height at which the flow path rib is raised may be lower than the height of the gap formed by the spacing member.
  • the flow path rib reinforcing material may be paper in which the fiber direction is parallel to the protrusion direction of the flow path ribs.
  • a heat exchange type ventilator using a heat exchange element may be used.
  • FIG. 21 is a schematic view showing an installation example of a heat exchange type ventilation device 402 provided with a heat exchange element 406.
  • FIG. 22 is a schematic view showing the structure of the heat exchange type ventilation device 402. As shown in FIG.
  • a heat exchange ventilator 402 is installed indoors in a house 401.
  • the heat exchange type ventilation device 402 is a device that performs ventilation while exchanging heat between indoor air and outdoor air.
  • the exhaust stream 403 is discharged to the outside through the heat exchange ventilator 402 as indicated by the black arrows.
  • the exhaust flow 403 is a flow of air exhausted from indoor to outdoor.
  • the charge air flow 404 is taken into the room via the heat exchange ventilator 402 as indicated by a white arrow.
  • the charge air flow 404 is a flow of air taken from the outside into the room.
  • the exhaust flow 403 may reach 20-25 ° C., whereas the supply flow 404 may reach below freezing.
  • the heat exchange type ventilator 402 performs ventilation and, at the time of the ventilation, transfers the heat of the exhaust flow 403 to the charge flow 404, thereby suppressing the release of unnecessary heat.
  • the heat exchange type ventilation device 402 is provided with a main body case 405, a heat exchange element 406, an exhaust fan 407, an inside air opening 408, an air exit 409, an air supply fan 410, an outside air opening 411, and an air supply opening 412.
  • the main body case 405 is an outer frame of the heat exchange ventilator 402.
  • An inner air opening 408, an exhaust opening 409, an outer air opening 411, and an air supply opening 412 are formed on the outer periphery of the main body case 405.
  • the inside air port 408 is a suction port that sucks the exhaust stream 403 into the heat exchange ventilator 402.
  • the exhaust port 409 is a discharge port for discharging the exhaust stream 403 from the heat exchange type ventilation device 402 to the outside.
  • the outside air port 411 is a suction port that sucks the air supply flow 404 into the heat exchange type ventilation device 402.
  • the air supply port 412 is a discharge port for discharging the air supply flow 404 from the heat exchange ventilator 402 into the room.
  • the heat exchange element 406 is a member for performing heat exchange between the exhaust flow 403 and the charge flow 404.
  • the exhaust fan 407 is a blower for drawing in the exhaust flow 403 from the inside air port 408 and discharging it from the exhaust port 409.
  • the air supply fan 410 is a blower for drawing in the air supply flow 404 from the outside air port 411 and discharging the air from the air supply port 412.
  • the exhaust stream 403 sucked by the exhaust fan 407 is exhausted to the outside from the exhaust port 409 via the heat exchange element 406 and the exhaust fan 407. Further, the air supply flow 404 sucked by the air supply fan 410 is supplied to the room from the air supply port 412 via the heat exchange element 406 and the air supply fan 410.
  • FIG. 23 is an exploded view showing the structure of the heat exchange element 406.
  • the heat exchange element piece 416 in which the spacing member 414 and the flow path rib 415 are raised (raised) parallel to one direction from the substantially square heat transfer plate 413 one by one A plurality of sheets are stacked while changing their directions so that the spacing members 414 are orthogonal to each other. This allows the exhaust flow 403 and the charge flow 404 to flow alternately one step at a time, and allows heat exchange between them.
  • the heat exchange element piece 416 is one unit that constitutes the heat exchange element 406.
  • the heat transfer plate 413 is a plate-like member for exchanging heat when the exhaust flow 403 and the charge air flow 404 flow with the heat transfer plate 413 interposed therebetween.
  • the heat transfer plate 413 is formed of a heat transfer paper 413p (see FIG. 25) based on cellulose fiber, and has heat conductivity, moisture permeability and hygroscopicity.
  • the heat transfer paper 413p is produced while flowing the pulp in a fixed direction, the cellulose fibers of the heat transfer paper 413p are aligned in the flow direction of the pulp. The direction in which the cellulose fibers are aligned is called the fiber direction.
  • Spacing members 414 are provided on a pair of opposite sides of heat transfer plate 413, and form a square pole shape that forms a gap between heat transfer plates 413 to ventilate exhaust flow 403 or supply flow 404 when heat transfer plates 413 are stacked. It is a member of As the material of the spacing member 414, a resin material such as polypropylene, polyethylene, polyethylene terephthalate, etc., or a paper material or metal based on cellulose fiber, ceramic fiber, glass fiber can be used if it has a certain strength. it can.
  • the flow path rib 415 is provided between the pair of spacing members 414 provided on the opposite side so as to be parallel to the spacing member 414, and rectifies and ventilate the exhaust flow 403 or the supply flow 404 in the gap. It is a member for forming the flow path for.
  • FIG. 24 is a partially enlarged view showing the structure of the flow path rib 415.
  • the flow path rib 415 has a quadrangular prism shape, and the lower part of the heat transfer plate 413 is a convex portion (rising portion) where the flow rib reinforcement 417 having a quadrangular prism shape is raised (raised). It is stored from.
  • the channel rib reinforcing member 417 is covered with the heat transfer plate 413 at a portion in contact with the channel rib side surface 419 and the channel rib top surface 418 serving as the air channel surface formed by the channel rib 415.
  • the heat transfer plate 413 is fixed to the side surface 419 and the flow path rib top surface 418. At the flow path rib bottom surface 420 and the flow path rib end face 421, the flow path rib reinforcements 417 are exposed. Similar to the flow path rib 415, the flow path rib reinforcement 417 extends in the direction along the air path.
  • the flow path rib reinforcing material 417 is a member for absorbing the moisture generated by condensation while maintaining the strength of the flow path rib 415.
  • the hygroscopicity of the flow path rib reinforcing material 417 is higher than the hygroscopicity of the heat transfer plate 413.
  • FIG. 25 is a schematic view showing the structure of the heat exchange element piece 416. As shown in FIG. As shown in FIG. 25, the fiber direction 430 of the cellulose fiber of the heat transfer paper 413 p is aligned in the direction oblique to the flow path rib 415.
  • the heat transfer paper 413p absorbs water
  • the heat transfer paper 413p expands in a direction orthogonal to the fiber direction 430 on the plane of the heat transfer paper 413p. That is, the heat transfer paper 413 p expands in the non-orthogonal direction with the flow path rib 415.
  • the heat transfer paper 413p is fixed to the flow path rib reinforcing member 417 by the flow path rib 415, expansion due to water absorption is suppressed. Therefore, in the heat transfer paper 413p, wrinkles occur in a direction parallel to the fiber direction 430, and asperities are formed in the direction intersecting the flow path rib 415. Thereby, the concave portion 431 is formed in the direction obliquely intersecting with the flow path rib 415.
  • the temperature of the charge air flow 404 is lower than that of the exhaust gas flow 403, the heat of the exhaust gas flow 403 is absorbed by the charge air flow 404 via the heat transfer plate 413, so the temperature of the exhaust flow 403 in contact with the heat transfer plate 413 decreases. Do. When the surface temperature of the heat transfer plate 413 falls below the dew point temperature of the exhaust flow 403, the water contained in the exhaust flow 403 is condensed to form water droplets and adheres to the heat transfer plate 413. If the water droplets by condensation remain in the air passage, the air flow resistance around the generated water droplets decreases because the air flow resists the exhaust flow 403 passing through the air passage.
  • the exhaust flow 403 flows with a non-uniform air volume balance to the heat transfer plate 413, so that the heat exchange efficiency of the heat exchange element 406 is reduced.
  • the heat exchange element 406 according to the fourth embodiment can be removed from the air path by absorbing the condensed water droplets in the flow path rib reinforcing material 417 having water absorbability, and therefore, can suppress an increase in ventilation resistance due to the condensed water droplets. .
  • the air volume balance of the exhaust flow 403 flowing through the heat transfer plate 413 can be maintained, and the heat exchange element 406 having high heat exchange efficiency can be obtained.
  • the water droplets which have condensed are collected in the concave portion 431 formed in the heat transfer plate 413.
  • the water droplets entering the recess 431 are pushed by the pressure of the exhaust stream 403 or the charge stream 404.
  • the recess 431 is formed nonparallel to the flow channel rib 415 (in the direction oblique to the flow channel rib 415), so the water droplet reaches the flow channel rib 415.
  • the water droplets that have reached the flow path rib 415 pass through the heat transfer plate 413.
  • the water droplets having passed through the heat transfer plate 413 are absorbed by the flow path rib reinforcing material 417 having hygroscopicity.
  • the water droplets can be removed from the air path by being absorbed by the flow path rib reinforcing material 417, it is possible to suppress an increase in the ventilation resistance due to the water droplets that have condensed. Therefore, the air volume balance of the exhaust stream 403 flowing through the heat transfer plate 413 can be maintained, and the heat exchange element 406 having high heat exchange efficiency can be obtained. Therefore, it is effective in the ability to prevent that heat exchange efficiency falls by the water droplet which generate
  • the exhaust flow 403 and the charge flow 404 flow along the flow channel rib 415 in a direction parallel to the flow channel rib 415.
  • the unevenness of the heat transfer plate 413 is formed in a direction oblique to the flow of the exhaust flow 403 or the supply flow 404. Therefore, the unevenness can soften the possibility of obstructing the flow of the exhaust flow 403 or the supply flow 404. As a result, the bias of the air flowing through the heat exchange element 406 can be reduced, and the reduction of the heat exchange efficiency can be reduced.
  • the amount of air that pushes the water droplets that the exhaust flow 403 or the air supply flow 404 enters the recess 431 toward the flow channel rib 415 increases, so that the water droplets can reach the flow channel rib 415 more quickly.
  • the water droplets can be quickly removed from the heat transfer plate 413. Therefore, it is effective in the ability to prevent that heat exchange efficiency falls by the water droplet which generate
  • the fiber direction 430 of the heat transfer paper 413 p is in a direction intersecting the flow path rib 415.
  • the fiber direction 430 of the heat transfer paper 413 p is orthogonal to the flow path rib 415.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 26 is a schematic view showing the structure of the heat exchange element piece 416 according to the fifth embodiment. As shown in FIG. 26, the fiber direction 430 of the cellulose fiber of the heat transfer paper 413 p is aligned in the direction orthogonal to the flow path rib 415.
  • the heat transfer paper 413p absorbs water
  • the heat transfer paper 413p expands in a direction orthogonal to the fiber direction 430 on the plane of the heat transfer paper 413p. That is, the heat transfer paper 413 p expands in a direction parallel to the flow path rib 415.
  • the heat transfer paper 413 p is fixed to the flow passage rib reinforcing member 417 by the flow passage rib 415
  • the heat transfer paper 413 p is restrained from expanding in the flow passage rib 415. Therefore, in the heat transfer paper 413p, wrinkles occur in a direction parallel to the fiber direction 430, and asperities are formed in a direction orthogonal to the flow path rib 415.
  • the recess 431 is formed in the direction orthogonal to the flow path rib 415.
  • Water droplets generated by condensation gather in the recess 431.
  • the water droplets entering the recess 431 are pushed by the pressure of the exhaust stream 403 or the charge stream 404.
  • the concave portion 431 is formed in the direction orthogonal to the flow path rib 415, the water droplet reaches the flow path rib 415 with a short moving distance.
  • the water droplet generated on the heat transfer plate 413 can be absorbed into the flow path rib reinforcing material 417 more quickly. Therefore, there is an effect that it is possible to promptly prevent the heat exchange efficiency from being reduced by the water droplets generated by the condensation.
  • heat exchange element 406 according to the fifth embodiment has the same effect as the fourth embodiment.
  • the heat transfer plate 413 is raised (raised) in a quadrangular prism shape to provide the flow path rib 415. More specifically, the rectangular rib-shaped hygroscopic channel rib reinforcing material 417 is accommodated from below in a raised portion (raised portion) of the heat transfer plate 413 raised (raised) and fixed by flowing. Road ribs 415 were provided.
  • the channel rib reinforcing member 417 is covered with the heat transfer plate 413 at a portion in contact with the channel rib side surface 419 and the channel rib top surface 418 serving as the air channel surface formed by the channel rib 415.
  • the heat transfer plate 413 was fixed by the side surface 419 and the flow path rib top surface 418.
  • the heat exchange element 406 adheres the flow path rib reinforcing material 417 with a moisture-permeable adhesive to transmit the flow path rib side surface 419 and the flow path rib top surface 418. It is fixed to the heat plate 413.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • an adhesive based on a polyurethane-based adhesive or an epoxy resin-based adhesive and provided with a hydrophilic functional group for example, a hydroxy group or the like
  • a hydrophilic functional group for example, a hydroxy group or the like
  • heat exchange element 406 according to the sixth embodiment has the same effect as the fourth embodiment with the same configuration.
  • the heat transfer plate 413 is raised (raised) in a quadrangular prism shape to provide the flow path rib 415. More specifically, the flow path rib 415 is provided by storing the flow path rib reinforcing material 417 having a hygroscopic property in the shape of a quadrangular prism in the protruding portion (upstanding portion) of the heat transfer plate 413 from below.
  • the heat exchange element 406 according to the seventh embodiment is made of a heat-softening material that softens the flow path rib reinforcing material 417 by heating.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • polyvinyl acetate, ethylene-vinyl alcohol copolymer resin, etc. can be used as the material having heat softening property and hygroscopic property, which are softened by heating.
  • the heat transfer plate 413 and the flow path rib reinforcement 417 can be directly adhered to each other by heat welding by making the material of the flow path rib reinforcement 417 soft and heat-softenable. Thereby, the moisture diffusion resistance from the heat transfer plate 413 to the flow path rib reinforcing material 417 is reduced, and the water droplets absorbed by the heat transfer plate 413 can be efficiently transmitted to the flow path rib reinforcing material 417.
  • heat exchange element 406 according to the seventh embodiment achieves the same effect by the same configuration as the fourth embodiment.
  • the spacing member 414 has a certain strength.
  • the heat exchange element 406 according to the eighth embodiment is lower than the hygroscopicity of the flow path rib reinforcing material 417.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • the spacing member 414 is made of a material that is less hygroscopic than the flow path rib reinforcement 417. As a result, the water droplet generated by the condensation is more absorbed by the flow path rib reinforcing member 417 than the spacing member 414. Therefore, expansion of the spacing member 414 due to the absorption of the condensed water droplets can be suppressed. That is, by suppressing the expansion of the spacing member 414, the predetermined spacing between the heat transfer plates 413 can be maintained, so that the deviation of the air flowing through the heat exchange element 406 can be suppressed. There is an effect that a high heat exchange element 406 can be obtained.
  • heat exchange element 406 according to the eighth embodiment has the same effect as the fourth embodiment with the same configuration.
  • a heat exchange element 406 according to Embodiment 9 will be described with reference to FIGS. 27A to 27C.
  • the heat transfer plate 413 is raised (raised) to provide the flow path rib 415.
  • the heat exchange element 406 according to the ninth embodiment is configured such that the height at which the flow path rib 415 is raised (raised) is lower than the height of the gap formed by the spacing member 414.
  • An air gap 432 is provided between the heat transfer plate 415 and the heat transfer plate 413.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 27A is a partially enlarged view showing the air gap 432 according to the ninth embodiment.
  • FIG. 27B is a front view of the air gap 432 as seen from the direction of arrow VIIb.
  • FIG. 27C is a cross-sectional view in which the air gap 432 is cut in the VIIc direction.
  • the height (height at which the heat transfer plate 413a is raised (raised)) of the flow path rib 415a is the spacing member 414a.
  • the distance between the heat transfer plate 413a and the heat transfer plate 413b is smaller than the height of the gap formed by the distance.
  • the heat exchange element piece 416b stacked on the heat exchange element piece 416a is in contact with the spacing member 414a of the heat exchange element piece 416a but not in contact with the flow path rib 415a. That is, the air gap 432 is provided between the flow path rib 415a and the heat transfer plate 413b opposed to the flow path rib 415a.
  • the flow channel rib reinforcing material 417 of the flow channel rib 415 a absorbs and expands the water droplets condensed, and the flow channel rib 415 a expands toward the heat transfer plate 413 b facing the flow channel rib 415 a, the flow channel rib 415 a
  • the air gap 432 between the heat exchange element piece 416b and the heat exchange element piece 416b can absorb the expansion volume of the flow path rib 415a. Therefore, the expansion of the flow path rib 415a can suppress the deformation of the heat exchange element piece 416b due to the collision with the heat exchange element piece 416b.
  • the gap between the heat exchange element pieces 416 can be maintained, and variations in the amount of air passing between the heat exchange element pieces 416 can be suppressed, so that the heat exchange element 406 having high heat exchange efficiency can be obtained even under dew condensation conditions. It has the effect of
  • the air gap 432 is designed by the protrusion (rise) dimension and moisture absorption of the flow path rib reinforcing material 417.
  • the moisture absorption rate in the standard state is 20%
  • the flow path rib 415 is provided with a gap corresponding to 20% of the raised (raised) dimension, so that the flow path rib 415 is fully absorbed.
  • the upper heat transfer plate 413 adjacent to each other, and deformation of the air passage can be suppressed.
  • heat exchange element 406 according to the ninth embodiment exhibits the same effect by the same configuration as the fourth embodiment.
  • the heat exchange element 406 according to the fourth embodiment uses the flow path rib reinforcing material 417 having hygroscopicity higher than the hygroscopicity of the heat transfer plate 413.
  • the heat exchange element 406 according to the tenth embodiment uses a paper whose fiber direction 433 is parallel to the convex (rising) direction of the flow path rib 415 as the flow path rib reinforcing material 417.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 28 is a partially enlarged view showing the fiber direction 433 of the flow path rib reinforcement 417 according to the tenth embodiment.
  • the flow path rib reinforcing material 417 uses, as its material, a paper in which the fiber direction 433 is parallel to the convex (rising) direction of the flow path rib 415.
  • the flow path rib reinforcement 417 is covered with the heat transfer plate 413 on the flow path rib side surface 419, even if the flow path rib reinforcement 417 absorbs water even if the water is evaporated, the flow The channel rib reinforcement 417 is pushed back to the heat transfer plate 413. Therefore, it can be prevented that the flow path rib reinforcing material 417 remains stretched in the direction orthogonal to the fiber direction 433 (the direction orthogonal to the protrusion direction (upstanding direction)).
  • expansion of the flow path rib 415 can prevent the upper and lower heat exchange element pieces 416 from colliding with each other and colliding with the upper and lower heat exchange element pieces 416. Therefore, the gap between the heat exchange element pieces 416 can be maintained, so that the variation of the air volume passing through the heat exchange element piece 416 can be suppressed, and the heat exchange element 406 having high heat exchange efficiency can be obtained even under dew condensation conditions. effective.
  • the heat exchange element 406 according to the tenth embodiment achieves the same effect by the same configuration as the fourth embodiment.
  • the flow path rib reinforcing material 417 is a single member having a square pole shape.
  • the flow path rib reinforcing material 417 is a composite member including a plurality of members.
  • the other configuration of the heat exchange element 406 is the same as that of the fourth embodiment, and thus the description thereof is omitted.
  • the same components as those in the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • FIG. 29 is a partially enlarged view showing a structural example of the flow path rib 415 according to the eleventh embodiment.
  • a corrugated cardboard sheet 436 is used as the flow path rib reinforcement 417.
  • the corrugated sheet 436 has a structure in which a core 435 is sandwiched between two liners 434, and is covered by a heat transfer plate 413.
  • the cardboard sheet 436 made of paper By using the cardboard sheet 436 made of paper, hygroscopicity can be imparted to the flow path rib reinforcing material 417.
  • the surface area of the flow path rib reinforcement 417 can be increased, there is also an effect that the water absorbed by the flow path rib reinforcement 417 can be evaporated faster.
  • heat exchange element 406 according to the eleventh embodiment has the same effect as the fourth embodiment.
  • the fifth embodiment may be implemented by combining any one of the sixth to eleventh embodiments or a plurality thereof.
  • a plurality of Embodiment 6 to Embodiment 11 may be implemented in combination with Embodiment 4.
  • the flow path rib reinforcement The material 417 may be fixed to the heat transfer plate 413 with a moisture-permeable adhesive.
  • the flow path rib reinforcement The material 417 may be made of a heat-softening material that softens by heating, or the spacing member 414 may be a material having a lower hygroscopicity than the flow path rib reinforcing material 417.
  • the flow path rib 415 may be provided between the flow path rib 415 and the heat transfer plate 413 opposed to each other by setting the height of the protrusion (raising) lower than the height of the gap formed by the spacing member 414.
  • a paper in which the fiber direction 433 is parallel to the projecting direction (upstanding direction) of the flow path rib 415 may be used as the flow path rib reinforcement 417, and a composite in which the flow path rib reinforcement 417 is formed of a plurality of members. It may be a member.
  • the flow path rib reinforcing material 417 having heat softening property that is softened by heating may be fixed to the heat transfer plate 413 with an adhesive having moisture permeability.
  • the channel rib reinforcing member 417 is directly fixed to the heat transfer plate 413 by using the heat softening property without using an adhesive on the channel rib side surface 419, and the channel rib top surface 418 is flowed using the adhesive.
  • the channel rib reinforcement 417 may be fixed to the heat transfer plate 413.
  • the flow path rib reinforcing material 417 can be fixed to the heat transfer plate 413 by two different fixing methods, even if one of the fixing methods becomes weak due to deterioration with time, the flow path The rib reinforcement 417 can be fixed to the heat transfer plate 413.
  • the spacing member 414 is shown in FIG. 27C as a material having lower hygroscopicity than the flow path rib reinforcing member 417 and further between the flow path rib 415 and the heat transfer plate 413 opposed to each other.
  • An air gap 432 may be provided.
  • the spacing member 414 is a material having lower hygroscopicity than the flow path rib reinforcement 417, the flow path rib reinforcement 417 absorbs moisture, suppresses expansion of the spacing member 414, and the spacing between the heat transfer plates 413 is reduced. Can be maintained.
  • the air gap 432 can prevent the flow path rib 415 from coming into contact with the heat transfer plate 413 opposed to the flow path rib 415.
  • the possibility of the occurrence of air flow deviation can be further reduced.
  • the heat transfer plate 413 is formed of the heat transfer paper 413p, but is not limited to this.
  • the heat transfer plate 413 may be a material having moisture permeability, and for example, a moisture-permeable resin film based on polyurethane or polyethylene terephthalate, or a cellulose fiber, a ceramic fiber, a paper material based on glass fiber, etc. can be used.
  • a non-hygroscopic material is used, no wrinkles are generated, so that the surface of the heat transfer plate 413 is provided in advance with irregularities in the direction non-parallel to the flow path rib 415 to allow water droplets collected in the recess 431 to flow
  • the rib reinforcement 417 can be absorbed.
  • the paper material based on cellulose fiber has an advantage of being easy to bend and covering the flow path rib reinforcing material 417 easily. Moreover, as described above, since wrinkles are formed by moisture absorption, it is not necessary to provide asperities in advance, which is more preferable.
  • the heat transfer plate 413 may be a thin sheet having heat conductivity, and may be of a nature that does not allow gas permeation.
  • the heat exchange type ventilation device 402 may be configured to use the heat exchange element 406 of any of the above embodiments.
  • the heat exchange element 406 with high heat exchange efficiency can be used, so heat with high heat exchange efficiency can be used. There is an effect that the exchange type ventilator 402 can be obtained.
  • the spacing member 414 a resin member such as polypropylene, polyethylene, polyethylene terephthalate or a material such as paper material or metal based on cellulose fiber, ceramic fiber, glass fiber or the like on the heat transfer plate 413.
  • the heat transfer plate 413 is raised (raised) to be the same as the height of the flow path rib 415, and a member made of a quadrangular prism-shaped material from the bottom is accommodated in the raised portion (standing portion).
  • the spacer member 414 may be provided by fixing the heat transfer plate 413 with the top surface.
  • the members used for the spacing member 414 can be fixed to the heat transfer plate 413, thereby eliminating the need for separate manufacturing steps and improving productivity. be able to.
  • the hygroscopicity of a member made of a quadrangular prism shape material in the spacing member 414 It can be realized by lowering it.
  • the heat transfer plate 413 When the heat transfer plate 413 is raised (raised) so that the heights of the flow passage ribs 415 become the same, the heat transfer plates stacked on the heat transfer plate 413 having the flow passage ribs 415 and the flow passage ribs 415 The air gap 432 shown in FIG. 27C is not provided between the heat plate 413.
  • the flow path rib reinforcing material 417 may be a paper in which the fiber direction is parallel to the protruding direction (upstanding direction) of the flow path rib 415. Accordingly, when the flow path rib reinforcing material 417 absorbs moisture, it expands in the direction orthogonal to the fiber method (the direction orthogonal to the convex direction (upright direction) of the heat transfer plate 413).
  • the flow path rib 415 can be prevented from extending in the direction of protrusion (upstanding direction).
  • the flow path rib reinforcement 417 is covered with the heat transfer plate 413 on the flow path rib side surface 419, the flow path rib reinforcement 417 is pushed back to the heat transfer plate 413 if the moisture evaporates, and the flow path rib It is possible to prevent the reinforcing material 417 from extending in the direction orthogonal to the fiber direction 433 (the direction orthogonal to the direction of protrusion (the direction of rising of the heat transfer plate 413)).
  • the heat transfer plate 413 is raised (raised), and the protruding portion (rising portion) has a quadrangular prism material from the bottom (for example, a resin member such as polypropylene, polyethylene, polyethylene terephthalate or cellulose fiber, ceramic fiber, A member made of glass fiber-based paper material, metal) is housed.
  • a resin member such as polypropylene, polyethylene, polyethylene terephthalate or cellulose fiber, ceramic fiber, A member made of glass fiber-based paper material, metal
  • the spacing member 414 is provided by fixing the heat transfer plate 413 by the side surface and the top surface, the height at which the flow path rib 415 is raised may be lower than the height of the gap formed by the spacing member 414 .
  • the air gap 432 shown in FIG. 27C can be provided between the flow path rib 415 and the heat transfer plate 413 opposite to each other.
  • the adhesion between the flow path rib reinforcement 417 and the heat transfer plate 413 may be partially provided with an adhesive surface, or the entire contact surface may be adhered.
  • the heat transfer plate 413 absorbs the water droplets due to the generated condensation and the generated water droplets are diffused to the flow path rib reinforcing material 417, by adhering to the entire contact surface, the area through which the generated water droplets can pass increases. This is more preferable because the moisture permeation resistance from the heat transfer plate 413 to the flow path rib reinforcement 417 is reduced.
  • the heat exchange element according to the present embodiment can maintain high heat exchange efficiency even when the temperature and humidity difference is large and dew condensation occurs inside and outside the room, and thus the heat exchange type ventilator It is useful as a heat exchange element used for etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Cet élément d'échange de chaleur inclut une pluralité de plaques de transfert thermique qui sont empilées les unes au-dessus des autres avec un espacement prescrit entre elles, et met en œuvre un échange de chaleur entre un flux d'alimentation et un flux d'évacuation amenant le flux d'alimentation et le flux d'évacuation à travers les espacements dans des niveaux alternés. Des nervures de passage de flux formant des passages de flux pour amener la traversée du flux d'alimentation ou du flux d'évacuation d'une manière rectifiée sont formées dans les espacements. Les nervures de passage de flux sont formées en amenant la plaque de transfert de chaleur à se tenir dressée, et un matériau de renforcement de nervures de passage de flux est inclus dans les parties dressées qui ont été formées.
PCT/JP2018/046222 2017-12-22 2018-12-17 Élément d'échange de chaleur, et dispositif de ventilation de type à échange de chaleur faisant appel à celui-ci WO2019124286A1 (fr)

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JP2017246536A JP6950517B2 (ja) 2017-12-22 2017-12-22 熱交換素子とそれを用いた熱交換形換気装置
JP2017-246536 2017-12-22
JP2018-055442 2018-03-23
JP2018055442A JP2019168148A (ja) 2018-03-23 2018-03-23 熱交換素子とそれを用いた熱交換形換気装置
JP2018058396A JP2019168199A (ja) 2018-03-26 2018-03-26 熱交換素子とそれを用いた熱交換形換気装置
JP2018-058396 2018-03-26
JP2018-062429 2018-03-28
JP2018062429A JP2019174054A (ja) 2018-03-28 2018-03-28 熱交換素子とそれを用いた熱交換形換気装置

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WO2021039064A1 (fr) * 2019-08-28 2021-03-04 パナソニックＩｐマネジメント株式会社 Élément d'échange de chaleur et dispositif de ventilation à échange de chaleur l'utilisant
US20220178630A1 (en) * 2019-02-27 2022-06-09 Panasonic Intellectual Property Management Co., Ltd. Heat exchange element and heat exchange-type ventilation device using same
US20220205729A1 (en) * 2020-12-28 2022-06-30 Huawei Digital Power Technologies Co., Ltd. Heat exchanger, modular indirect evaporation cooling system, and method for controlling modular indirect evaporation cooling system

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JPH06185887A (ja) * 1992-12-15 1994-07-08 Toshiba Corp 熱交換器及びその製造方法
JPH0829087A (ja) * 1994-07-18 1996-02-02 Daikin Ind Ltd 熱交換エレメント
JP2005140362A (ja) * 2003-11-05 2005-06-02 Matsushita Electric Ind Co Ltd 熱交換器
WO2011033624A1 (fr) * 2009-09-16 2011-03-24 三菱電機株式会社 Élément d'échange de chaleur à enthalpie totale
JP2013137179A (ja) * 2011-12-01 2013-07-11 Mitsubishi Electric Corp 全熱交換素子及び全熱交換器

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JPH06185887A (ja) * 1992-12-15 1994-07-08 Toshiba Corp 熱交換器及びその製造方法
JPH0829087A (ja) * 1994-07-18 1996-02-02 Daikin Ind Ltd 熱交換エレメント
JP2005140362A (ja) * 2003-11-05 2005-06-02 Matsushita Electric Ind Co Ltd 熱交換器
WO2011033624A1 (fr) * 2009-09-16 2011-03-24 三菱電機株式会社 Élément d'échange de chaleur à enthalpie totale
JP2013137179A (ja) * 2011-12-01 2013-07-11 Mitsubishi Electric Corp 全熱交換素子及び全熱交換器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220178630A1 (en) * 2019-02-27 2022-06-09 Panasonic Intellectual Property Management Co., Ltd. Heat exchange element and heat exchange-type ventilation device using same
WO2021039064A1 (fr) * 2019-08-28 2021-03-04 パナソニックＩｐマネジメント株式会社 Élément d'échange de chaleur et dispositif de ventilation à échange de chaleur l'utilisant
US20220205729A1 (en) * 2020-12-28 2022-06-30 Huawei Digital Power Technologies Co., Ltd. Heat exchanger, modular indirect evaporation cooling system, and method for controlling modular indirect evaporation cooling system

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