WO2020261486A1 - Heat exchange element and heat exchange ventilation device - Google Patents

Heat exchange element and heat exchange ventilation device Download PDF

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Publication number
WO2020261486A1
WO2020261486A1 PCT/JP2019/025595 JP2019025595W WO2020261486A1 WO 2020261486 A1 WO2020261486 A1 WO 2020261486A1 JP 2019025595 W JP2019025595 W JP 2019025595W WO 2020261486 A1 WO2020261486 A1 WO 2020261486A1
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WO
WIPO (PCT)
Prior art keywords
air passage
width
air
heat exchange
holding member
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PCT/JP2019/025595
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French (fr)
Japanese (ja)
Inventor
一 外川
Original Assignee
三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/025595 priority Critical patent/WO2020261486A1/en
Priority to JP2021528784A priority patent/JP7126617B2/en
Publication of WO2020261486A1 publication Critical patent/WO2020261486A1/en

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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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning

Definitions

  • the present invention relates to a heat exchange element and a heat exchange ventilation device that exchange heat between air streams.
  • a heat exchange ventilation device that exchanges heat between the air supply from the outside to the room and the exhaust flow from the room to the outside is known.
  • By performing ventilation using a heat exchange ventilation device it is possible to improve the efficiency of heating and cooling in the room and the efficiency of dehumidification and dehumidification, and reduce the energy used for air conditioning in the room.
  • the heat exchange ventilation device is equipped with a heat exchange element that exchanges heat.
  • the heat exchange element is provided with an air supply air passage and an exhaust air passage.
  • the air supply air passage and the exhaust air passage are independent air passages with a partition member in between.
  • heat is transferred between the air supply airflow flowing through the air supply air passage and the exhaust flow flowing through the exhaust air passage through the partition member.
  • the heat exchange element is required to improve the heat exchange efficiency.
  • Patent Document 1 discloses a technique for improving heat exchange efficiency by increasing the heat transfer area and generating turbulence of the air flow by providing unevenness on the partition member.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a heat exchange element capable of improving heat exchange efficiency.
  • the heat exchange elements according to the present invention include a first heat transfer unit that forms a first air passage and a second heat transfer unit that forms a second air passage.
  • the first and second air passages are a first width air passage extending from the air flow inlet toward the downstream side along the air flow direction, and a first width air passage on the downstream side of the first width air flow. It has two or more second width air passages formed by branching the air passage into two or more.
  • the air passage width of the second width air passage is narrower than the air passage width of the first width air passage.
  • FIG. 1 An exploded perspective view showing a heat exchange element according to the first embodiment of the present invention.
  • FIG. 1 is an exploded perspective view showing a heat exchange element 1 according to the first embodiment of the present invention.
  • the heat exchange element 1 includes a plurality of first heat transfer units 2a forming the first air passage 5 and a plurality of second heat transfer units 2b forming the second air passage 6.
  • the first heat transfer unit 2a and the second heat transfer unit 2b are alternately stacked.
  • the first heat transfer unit 2a and the second heat transfer unit 2b may be collectively referred to as "heat transfer unit 2".
  • Each heat transfer unit 2 is a plurality of spacing members that form a first air passage 5 or a second air passage 6 between one partition member 3 and the adjacent partition members 3 installed on the partition member 3. 4 and. That is, the heat exchange element 1 includes a plurality of partition members 3 arranged at intervals from each other, and a plurality of interval holding members 4 for maintaining the distance between the partition members 3.
  • the first air passage 5 and the second air passage 6 are partitioned by a partition member 3.
  • the first air passage 5 and the second air passage 6 are alternately provided with the partition member 3 interposed therebetween.
  • the first air flow 7 is an air supply from the outside to the inside of the room.
  • the second air flow 8 is an exhaust flow from the room to the outside.
  • a first air flow 7 flows through the first air passage 5.
  • a second air flow 8 flows through the second air passage 6.
  • the heat exchange element 1 is a orthogonal flow type total heat exchange element in which the flow direction of the first air flow 7 and the flow direction of the second air flow 8 are orthogonal to each other. In the heat exchange element 1, heat is transferred between the first air flow 7 and the second air flow 8 via the partition member 3.
  • the flow direction of the air flow may be referred to as an "air flow direction”
  • the direction orthogonal to the flow direction of the air flow may be referred to as an "orthogonal direction”.
  • the partition member 3 is a plate-shaped member formed in a quadrangular shape in a plan view.
  • a functional paper made of highly beaten pulp, a composite resin film using a hydrophilic resin, or the like is used.
  • a member to which a hygroscopic agent for promoting a hygroscopic action is added may be used.
  • a deliquescent material such as lithium chloride or calcium chloride, a material having a mild moisture absorbing / releasing action such as a desiccant agent, or a material having an adsorptive action such as zeolite or silica gel may be used.
  • a resin plate, a resin film, or the like having no moisture permeable effect may be used.
  • it works as a heat exchange element that exchanges only the temperature, but PET (Polyethylene terephthalate), PP (Polypropylene), ABS (Acrylonitrile Butadinee Styrene), PS (Polystyrene), etc. are used for the resin plate.
  • the resin film a composite resin film using a thin film such as polyurethane or polyethylene may be used.
  • a non-woven fabric such as polyester in order to provide manufacturing strength and rigidity.
  • the shape of the spacing member 4 is not particularly limited, but in the present embodiment, it is a square pillar.
  • the spacing member 4 extends along the air flow direction.
  • the interval holding member 4 needs a material and a structure for accurately maintaining the interval dimension of the partition member 3.
  • the space-holding member 4 is a square material made of a resin material such as PP, ABS, PS, a square material made of paper using a pulp mold, a PET or PP resin material formed in a hollow shape, or a hollow material obtained by bending a paper or resin film. It may be formed of a member.
  • the partition member 3 is not provided with a moisture permeable effect, the interval holding member 4 and the partition member 3 can be integrally molded with the same material. In this way, productivity can be increased and costs can be reduced. Further, by making the interval holding member 4 hollow, the weight of the heat exchange element 1 can be reduced.
  • FIG. 2 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the first embodiment of the present invention.
  • a plurality of spacing members 4 having different lengths are installed on one partition member 3.
  • three types of spacing members 4 having different lengths along the air flow direction are used.
  • the longest interval holding member 4 is the “first interval holding member 41”
  • the second longest interval holding member 4 is the “second interval holding member 42”
  • the shortest interval holding member 4 is the "third interval holding member 43”. ".
  • the upstream side and the downstream side mean the upstream side and the downstream side along the flow direction of the air flow.
  • the first interval holding member 41 is a member that defines the air passage width X1 of the first width air passage 9.
  • the first interval holding member 41 is installed over the entire length of both ends of the partition member 3 along the direction orthogonal to the flow direction of the air flow.
  • a first width air passage 9 is formed between the two first spacing holding members 41 on the upstream side of the second spacing holding member 42. The first width air passage 9 will be described in detail later.
  • the second interval holding member 42 is a member that defines the air passage width X2 of the second width air passage 10.
  • the second interval holding member 42 is installed between the two first interval holding members 41.
  • the two second spacing members 42 are installed at intervals along the orthogonal direction. The distance between the two second gap holding members 42 and the distance between the adjacent second gap holding member 42 and the first gap holding member 41 are equal.
  • the second spacing member 42 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end surface 42a of the second spacing member 42 is located downstream of the windward end surface 41a of the first spacing member 41.
  • a second width air passage 10 is formed between the two second gap holding members 42 on the upstream side of the third gap holding member 43. Further, a second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41 on the upstream side of the third gap holding member 43.
  • the second width air passage 10 will be described in detail later.
  • the third interval holding member 43 is a member that defines the air passage width X3 of the third width air passage 11.
  • the three third spacing members 43 are installed at intervals along the orthogonal direction.
  • the third interval holding member 43 is installed one by one between the adjacent first interval holding member 41 and the second interval holding member 42 and between the adjacent second interval holding member 42.
  • the third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end surface 43a of the third spacing member 43 is located downstream of the windward end surface 41a of the first spacing member 41 and the windward end surface 42a of the second spacing member 42. The distance between the adjacent third gap holding member 43 and the first gap holding member 41 and the distance between the adjacent second gap holding member 42 and the first gap holding member 41 are equal.
  • a third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41. Further, a third width air passage 11 is formed between the adjacent third interval holding member 43 and the second interval holding member 42. The third width air passage 11 will be described in detail later.
  • the width of the first air passage 5 gradually narrows toward the downstream side along the air flow direction.
  • the first air passage 5 has a first width air passage 9 extending from the inlet 22 of the first air flow 7 toward the downstream side along the air flow direction, and a first width on the downstream side of the first width air passage 9.
  • Two or more second width air passages 10 formed by branching the air passage 9 into two or more, and the second width air passage 10 branched into two or more on the downstream side of the second width air passage 10. It has two or more third width air passages 11 formed.
  • a case where one first width air passage 9, three second width air passages 10, and six third width air passages 11 are provided is illustrated, but the width air passages 9, 10, and 11 are provided. It is not intended to limit the number.
  • the air passage width X1 of the first width air passage 9 is the widest in the first air passage 5.
  • the first width air passage 9 extends along the air flow direction with a first air passage length Y1.
  • the air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9.
  • the second width air passage 10 extends along the air flow direction with a second air passage length Y2.
  • the air passage width X3 of the third width air passage 11 is narrower than the air passage width X1 of the first width air passage 9 and the air passage width X2 of the second width air passage 10.
  • the third width air passage 11 extends along the air flow direction with a third air passage length Y3.
  • the air passage height Z1 of the first air passage 5 is constant over the entire length in the air flow direction. That is, the heights of the first width air passage 9, the second width air passage 10, and the third width air passage 11 are the same.
  • the first air passage length Y1 of the first width air passage 9, the second air passage length Y2 of the second width air passage 10, and the third air passage length Y3 of the third width air passage 11 are the lengths of the approach sections. It is less than or equal to.
  • the run-up section is a section in which turbulence of the air flow occurs moderately.
  • the length LL1 of the approach section of the first width air passage 9 is represented by the following equation (1).
  • Re is the Reynolds number of the first air flow 7.
  • D1 is the equivalent diameter of the first width air passage 9.
  • the equivalent diameter of the first width air passage 9 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the first width air passage 9 from the viewpoint of the flow of air flow.
  • LL1 0.056 x Re x D1 ... (1)
  • the first air passage length Y1 of the first width air passage 9 along the flow direction of the air flow is preferably equal to or less than the length LL1 of the approach section of the first width air passage 9. Therefore, it is preferable that the following equation (2) holds. Y1 ⁇ 0.056 x Re x D1 ... (2)
  • the length LL2 of the approach section of the second width air passage 10 is represented by the following equation (3).
  • Re is the same as the above equation (1).
  • D2 is the equivalent diameter of the second width air passage 10.
  • the equivalent diameter of the second width air passage 10 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the second width air passage 10 from the viewpoint of the flow of air flow.
  • LL2 0.056 x Re x D2 ... (3)
  • the second air passage length Y2 of the second width air passage 10 along the flow direction of the air flow is preferably equal to or less than the length LL2 of the approach section of the second width air passage 10. Therefore, it is preferable that the following equation (4) holds. Y2 ⁇ 0.056 x Re x D2 ... (4)
  • the length LL3 of the approach section of the third width air passage 11 is represented by the following equation (5).
  • Re is the same as the above equation (1).
  • D3 is the equivalent diameter of the third width air passage 11.
  • the equivalent diameter of the third width air passage 11 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the third width air passage 11 from the viewpoint of the flow of air flow.
  • LL3 0.056 x Re x D3 ... (5)
  • the third air passage length Y3 of the third width air passage 11 along the flow direction of the air flow is preferably not more than the length LL3 of the approach section of the third width air passage 11. Therefore, it is preferable that the following equation (6) holds. Y3 ⁇ 0.056 x Re x D3 ... (6)
  • the equivalent diameter D1 of the first width air passage 9 is represented by the following equation (7).
  • S1 is the air passage cross-sectional area of the first width air passage 9.
  • L1 is the peripheral length of the cross section of the first width air passage 9, that is, the wet edge length of the first width air passage 9.
  • the unit of air passage cross-sectional area is m 2 .
  • D1 4 ⁇ S1 / L1 ... (7)
  • the equivalent diameter D2 of the second width air passage 10 is represented by the following equation (8).
  • S2 is the air passage cross-sectional area of the second width air passage 10.
  • L2 is the peripheral length of the cross section of the second width air passage 10, that is, the wet edge length of the second width air passage 10.
  • the unit of air passage cross-sectional area is m 2 .
  • D2 4 ⁇ S2 / L2 ... (8)
  • the equivalent diameter D3 of the third width air passage 11 is represented by the following equation (9).
  • S3 is the air passage cross-sectional area of the third width air passage 11.
  • L3 is the peripheral length of the cross section of the third width air passage 11, that is, the wet edge length of the third width air passage 11.
  • the unit of air passage cross-sectional area is m 2 .
  • D3 4 ⁇ S3 / L3 ... (9)
  • the first width air passage 9 is considered to have a rectangular cross section, and the air passage cross-sectional area S1 of the first width air passage 9 is represented by the following equation (10).
  • Z1 is the air passage height of the first air passage 5.
  • S1 X1 ⁇ Z1 ... (10)
  • the second width air passage 10 is considered to have a rectangular cross section, and the air passage cross-sectional area S2 of the second width air passage 10 is represented by the following equation (11).
  • S2 X2 ⁇ Z1 ... (11)
  • the third width air passage 11 is considered to have a rectangular cross section, and the air passage cross-sectional area S3 of the third width air passage 11 is represented by the following equation (12).
  • S3 X3 ⁇ Z1 ... (12)
  • the wet edge length L1 of the first width air passage 9 is represented by the following equation (13).
  • L1 2 ⁇ (X1 + Z1) ... (13)
  • the wet edge length L2 of the second width air passage 10 is represented by the following equation (14).
  • L2 2 ⁇ (X2 + Z1) ... (14)
  • the wet edge length L3 of the third width air passage 11 is represented by the following equation (15).
  • L3 2 ⁇ (X3 + Z1) ...
  • the Reynolds number Re of the first width air passage 9 is expressed by the following equation (16).
  • V1 is the average flow velocity of the first air flow 7 in the first width air passage 9.
  • the unit of V is meters per second.
  • ⁇ is the kinematic viscosity coefficient of the first air flow 7 in the first air passage 5.
  • the unit of ⁇ is square meters per second.
  • the kinematic viscosity coefficient ⁇ is generally 1.5 ⁇ 10 -6 m 2 / s.
  • Re (D1) ⁇ (V1) / ( ⁇ ) ⁇ ⁇ ⁇ (16)
  • the average flow velocity V1 of the first air flow 7 in the first width air passage 9 is represented by the following equation (17).
  • Q1 is the flow rate of the first air flow 7 flowing through the first width air passage 9.
  • the unit of Q is cubic meters.
  • V1 Q1 / S1 ... (17)
  • the Reynolds number Re of the second width air passage 10 is expressed by the following equation (18).
  • V2 is the average flow velocity of the first air flow 7 in the second width air passage 10.
  • Re (D2) ⁇ (V2) / ( ⁇ ) ⁇ ⁇ ⁇ (18)
  • the average flow velocity V2 of the first air flow 7 in the second width air passage 10 is represented by the following equation (19).
  • Q2 is the flow rate of the first air flow 7 flowing through the second width air passage 10.
  • V2 Q2 / S2 ... (19)
  • the Reynolds number Re of the third width air passage 11 is expressed by the following equation (20).
  • V3 is the average flow velocity of the first air flow 7 in the third width air passage 11.
  • Re (D3) ⁇ (V3) / ( ⁇ ) ⁇ ⁇ ⁇ (20)
  • the average flow velocity V3 of the first air flow 7 in the third width air passage 11 is represented by the following equation (21).
  • Q3 is the flow rate of the first air flow 7 flowing through the third width air passage 11.
  • V3 Q3 / S3 ... (21)
  • the length LL1 of the approach section of the first width air passage 9 and the first air passage length Y1 of the first width air passage 9 obtained by the above formula are made equal. Further, the length LL2 of the approach section of the second width air passage 10 and the second air passage length Y2 of the second width air passage 10 were made equal. Further, the length LL3 of the approach section of the third width air passage 11 and the third air passage length Y3 of the third width air passage 11 were made equal.
  • the first air passage 5 and the second air passage 6 are a first width air passage 9 extending from the inflow port 22 toward the downstream side along the flow direction of the air flow, and a first width.
  • Three second width air passages 10 formed by branching the first width air passage 9 into three on the downstream side of the air passage 9, and a second width air passage 10 on the downstream side of the second width air passage 10. It has six third width air passages 11 formed by branching into six.
  • the air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9, and the air passage width X3 of the third width air passage 11 is the air passage width X3 of the second width air passage 10. It is narrower than the air passage width X2.
  • the approach section is repeatedly generated over the entire length of the first air passage 5 and the second air passage 6 in the air flow direction, and the air flow is suppressed while suppressing the separation of the air flow from the heat transfer surface of the partition member 3. Disturbance can be generated moderately.
  • the contact area where the air comes into contact with the heat transfer surface can be increased, and by generating the turbulence of the air flow, the first air passage 5 and the first air passage 5 and the first 2
  • the heat transfer coefficient and the material transfer rate to the inner wall surface of the air passage 6 are increased. As a result, the total heat exchange efficiency of the heat exchange element 1 can be improved.
  • each width air passage 9, 10 and 11 is made longer than the approach section, and the air flow in the approach space and the air flow after passing the approach section. It was found that the air flow was more likely to be turbulent in the approach section than after the approach section was passed.
  • the air passage of the heat exchange element 1 in which air flows while transferring heat and substances to the inner wall surface of the air passage the temperature and humidity of the air flow are mixed due to the turbulence of the air flow, and the temperature boundary layer and humidity The boundary layer is destroyed. Therefore, the heat transfer coefficient and the substance transfer coefficient to the inner wall surfaces of the first air passage 5 and the second air passage 6 are higher in the approach section than after passing the approach section.
  • the air flow is easily separated from the heat transfer surface of the partition member, so that a region having poor heat transfer efficiency may be created. As a result, the total heat exchange efficiency of the heat exchange element may not be improved.
  • the run-up section is repeatedly generated over the entire length of the first air passage 5 and the second air passage 6 in the air flow direction, so that the air from the heat transfer surface of the partition member 3 is generated. The separation of the flow can be suppressed. As a result, the region where the heat transfer efficiency is poor can be reduced as compared with the conventional technique, so that the total heat exchange efficiency of the heat exchange element 1 can be improved.
  • the partition member 3 and the interval holding member 4 are manufactured individually, they are bonded by an adhesive or, if the material is a resin, by heat transfer, as shown in FIG.
  • the heat transfer unit 2 can be firmly manufactured.
  • the structural strength of the heat exchange element 1 can be improved even when a plurality of heat transfer units 2 are laminated in a state where the length directions of the interval holding members 4 are orthogonal to each other as shown in FIG.
  • FIG. 3 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the second embodiment of the present invention.
  • the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
  • the shape of the space holding member 4 is a corrugated shape in the present embodiment.
  • the interval holding member 4 is formed in a substantially triangular shape that is convex in the direction away from the partition member 3.
  • the cross-sectional shapes of the first width air passage 9, the second width air passage 10, and the third width air passage 11 are trapezoidal or triangular.
  • the inside of the space holding member 4, that is, the space surrounded by the space holding member 4 and the partition member 3 also serves as an air passage.
  • first interval holding member 41 the longest interval holding member 4
  • second interval holding member 42 the second longest interval holding member 4
  • third interval holding member 43 the third longest interval holding member 43
  • fourth interval holding member 44 the shortest interval holding member 44
  • the first interval holding member 41 is a member that defines the air passage width X1 of the first width air passage 9.
  • the first interval holding member 41 is installed over the entire length of both ends of the partition member 3 along the direction orthogonal to the flow direction of the air flow.
  • a first width air passage 9 is formed between the two first spacing holding members 41 on the upstream side of the second spacing holding member 42. The first width air passage 9 will be described in detail later.
  • the second interval holding member 42 is a member that defines the air passage width X2 of the second width air passage 10.
  • the second interval holding member 42 is installed between the two first interval holding members 41.
  • the distance between the adjacent second gap holding member 42 and one first gap holding member 41 and the distance between the adjacent second gap holding member 42 and the other first gap holding member 41 are equal. That is, the second interval holding member 42 is installed at an intermediate position between the two first interval holding members 41 in the orthogonal direction.
  • the second spacing member 42 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end of the second spacing member 42 is located downstream of the windward end of the first spacing member 41.
  • a second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41 on the upstream side of the third gap holding member 43. The second width air passage 10 will be described in detail later.
  • the third interval holding member 43 is a member that defines the air passage width X3 of the third width air passage 11.
  • the two third spacing members 43 are installed so as to be spaced apart from each other along the orthogonal direction.
  • the third interval holding member 43 is installed one by one between the adjacent first interval holding member 41 and the second interval holding member 42.
  • the third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end of the third spacing member 43 is located downstream of the windward end of the first spacing member 41 and the windward end of the second spacing member 42.
  • the distance between the adjacent third gap holding member 43 and the first gap holding member 41 and the distance between the adjacent third gap holding member 43 and the second gap holding member 42 are equal.
  • a third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41 on the upstream side of the fourth interval holding member 44. Further, a third width air passage 11 is formed between the adjacent third gap holding member 43 and the second gap holding member 42 on the upstream side of the fourth gap holding member 44. The third width air passage 11 will be described in detail later.
  • the fourth interval holding member 44 is a member that defines the air passage width X4 of the fourth width air passage 12.
  • the four fourth spacing members 44 are installed at intervals along the orthogonal direction.
  • One fourth space holding member 44 is provided between the adjacent first space holding member 41 and the third space holding member 43, and between the adjacent second space holding member 42 and the third space holding member 43. They are installed one by one.
  • the fourth interval holding member 44 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end of the fourth spacing member 44 is closer to the windward end of the first spacing member 41, the windward end of the second spacing member 42, and the windward end of the third spacing member 43. It is located on the downstream side.
  • a fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the first interval holding member 41. Further, a fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the second interval holding member 42. Further, a fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the third interval holding member 43. The fourth width air passage 12 will be described in detail later.
  • the width of the first air passage 5 gradually narrows toward the downstream side along the air flow direction.
  • the first air passage 5 includes a first width air passage 9 extending from the inflow port 22 toward the downstream side along the air flow direction, and two first width air passages 9 on the downstream side of the first width air passage 9. It has two or more second width air passages 10 formed by being branched as described above.
  • the first air passage 5 includes two or more third width air passages 11 formed by branching the second width air passage 10 into two or more on the downstream side of the second width air passage 10, and a third air passage 5. It has two or more fourth width air passages 12 formed by branching the third width air passage 11 into two or more on the downstream side of the width air passage 11.
  • a case where one first width air passage 9, two second width air passages 10, four third width air passages 11, and eight fourth width air passages 12 are provided is illustrated. However, it is not intended to limit the number of each width air passage 9, 10, 11, 12.
  • the air passage width X1 of the first width air passage 9 is the widest in the first air passage 5.
  • the first width air passage 9 extends along the air flow direction with a first air passage length Y1.
  • the air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9.
  • the second width air passage 10 extends along the air flow direction with a second air passage length Y2.
  • the air passage width X3 of the third width air passage 11 is narrower than the air passage width X1 of the first width air passage 9 and the air passage width X2 of the second width air passage 10.
  • the third width air passage 11 extends along the air flow direction with a third air passage length Y3.
  • the air passage width X4 of the fourth width air passage 12 is the narrowest in the first air passage 5.
  • the fourth width air passage 12 extends along the air flow direction with a fourth air passage length Y4.
  • the air passage height Z2 of the first air passage 5 is constant over the entire length in the air flow direction. That is, the heights of the first width air passage 9, the second width air passage 10, the third width air passage 11, and the fourth width air passage 12 are the same.
  • the cross-sectional shapes of the first air passage 5 and the second air passage 6 according to the present embodiment are different from the cross-sectional shapes of the first air passage 5 and the second air passage 6 according to the first embodiment. Therefore, it is necessary to examine the equivalent diameter and the length of the approach section that changes accordingly, but the basic idea is the same as that described in the first embodiment. That is, also for the first air passage 5 and the second air passage 6 according to the second embodiment, the length of the approach section can be obtained by calculating the equivalent diameter and the Reynolds number.
  • the cross-sectional shapes of the first air passage 5 and the second air passage 6 may be regarded as being similar to a trapezoid or a substantially triangular shape. Since the cross-sectional shape of the first air passage 5 of the present embodiment is a general geometric shape, the description of the air passage cross-sectional area and the wet edge length will be omitted.
  • the first space holding member 41, the second space holding member 42, the third space holding member 43, and the fourth space holding member 44 having different lengths are formed or folded.
  • Each of the manufactured interval holding members 4 can be joined to the partition member 3. Further, one long corrugated member was prepared and cut to the lengths of the first interval holding member 41, the second interval holding member 42, the third interval holding member 43, and the fourth interval holding member 44.
  • Each of the interval holding members 4 can also be joined to the partition member 3.
  • the fourth interval holding member 44 can also be manufactured.
  • a corrugated member having a length of 41 or more is prepared by extrusion molding, and by cutting the corrugated member, the first interval holding member 41, the second interval holding member 42, and the third interval holding member 42 are prepared. 43 and the fourth spacing member 44 can also be manufactured.
  • the paper corrugated technique when used, the paper having holes periodically is passed through the core making machine to pass the first interval holding member 41, the second interval holding member 42, the third interval holding member 43 and the fourth.
  • the interval holding member 44 can also be manufactured.
  • the first interval holding member 41, the second interval holding member 42, the third interval holding member 43, and the fourth interval holding member 44 are formed by cutting the corrugated cardboard. It can also be manufactured.
  • the inside of the space holding member 4 also becomes a hollow air passage, so that the pressure loss of the heat exchange element 1 can be reduced.
  • continuous production can be performed by taking advantage of the productivity of corrugated production. As a result, the pressure loss can be reduced and the heat exchange element 1 with high productivity can be obtained.
  • FIG. 4 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the third embodiment of the present invention.
  • the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
  • the present embodiment is different from the first embodiment in that the second interval holding member 42 is offset from the third interval holding member 43 on the upstream side along the air flow direction.
  • the second interval holding member 42 is offset from the third interval holding member 43 on the upstream side along the air flow direction.
  • the third interval holding member 43 is longer than the second interval holding member 42, but the lengths of both may be the same, or the second interval holding member 42 may be longer than the third interval holding member 43. You may.
  • the third interval holding member 43 is installed between the two first interval holding members 41.
  • the six third spacing members 43 are installed at intervals along the orthogonal direction.
  • the third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side.
  • the windward end surface 43a of the third spacing member 43 is located downstream of the windward end surface 41a of the first spacing member 41 and the windward end surface 42a of the second spacing member 42.
  • the spacing between adjacent third spacing members 43 is equal.
  • the distance between the adjacent third gap holding members 43 is wider than the distance between the adjacent third gap holding member 43 and the first gap holding member 41.
  • a third width air passage 11 is formed between adjacent third interval holding members 43.
  • the third width air passage 11 formed between the adjacent third interval holding members 43 will be referred to as a “third main width air passage 11a”.
  • a third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41.
  • the third width air passage 11 formed between the adjacent third interval holding member 43 and the first interval holding member 41 will be referred to as a "third sub-width air passage 11b".
  • the air passage width X32 of the third sub-width air passage 11b is formed to be half the size of the air passage width X31 of the third main width air passage 11a in the present embodiment.
  • the air passage width X31 of the third main width air passage 11a and the air passage width X32 of the third sub width air passage 11b are narrower than the air passage width X1 of the first width air passage 9.
  • a case where five third main width air passages 11a and two third sub width air passages 11b are provided is illustrated, but the third main width air passage 11a and the third sub width air passage 11b are illustrated. It is not intended to limit the number of.
  • the second interval holding member 42 is installed between the two first interval holding members 41.
  • the three second spacing members 42 are installed at intervals along the orthogonal direction.
  • the second interval holding member 42 is offset from the third interval holding member 43 on the upstream side along the air flow direction.
  • the second interval holding member 42 is arranged on the upstream side of the third main width air passage 11a.
  • the second spacing member 42 is installed every other time with respect to the five third main width air passages 11a.
  • the distances between the adjacent second gap holding members 42 are equal.
  • the distance between the adjacent second gap holding members 42 is wider than the distance between the adjacent second gap holding member 42 and the first gap holding member 41.
  • a second width air passage 10 is formed between the adjacent second gap holding members 42.
  • the second width air passage 10 formed between the adjacent second gap holding members 42 will be referred to as a “second main width air passage 10a”.
  • a second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41.
  • the second width air passage 10 formed between the adjacent second interval holding member 42 and the first interval holding member 41 will be referred to as a “second sub-width air passage 10b”.
  • the air passage width X22 of the second sub-width air passage 10b is formed to be half the size of the air passage width X21 of the second main width air passage 10a.
  • the air passage width X21 of the second main width air passage 10a and the air passage width X22 of the second sub width air passage 10b are narrower than the air passage width X1 of the first width air passage 9.
  • the air passage width X21 of the second main width air passage 10a and the air passage width X22 of the second sub width air passage 10b are the air passages of the air passage width X31 of the third main width air passage 11a and the air passage 11b of the third sub width air passage 11b. Wider than width X32.
  • the air flow can easily hit the windward end surface 43a of the third interval holding member 43. .. Since the air flow that hits the windward end surface 43a of the third interval holding member 43 is divided, it is possible to promote the turbulence of the air flow in the first air passage 5 and the second air passage 6. As a result, the heat transfer coefficient and the substance transfer coefficient to the inner wall surfaces of the first air passage 5 and the second air passage 6 can be increased, and the total heat exchange efficiency of the heat exchange element 1 can be improved.
  • the ratio of the air passage 11b to the air passage width X32 may be appropriately changed.
  • the air passage width X22 of the second sub-width air passage 10b is set to 1.5 times the air passage width X21 of the second main width air passage 10a.
  • the air passage width X32 of the three sub-width air passages 11b may be 1.5 times as large as the air passage width X31 of the third main width air passage 11a.
  • FIG. 5 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the fourth embodiment of the present invention.
  • the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
  • a plurality of heat transfer units 2 according to the first embodiment are installed side by side on the same plane.
  • a plurality of first heat transfer units 2a and second heat transfer units 2b arranged on the same plane are alternately stacked to form a heat exchange element 1.
  • two heat transfer units 2 are provided side by side along the flow direction of the air flow and the direction orthogonal to the flow direction of the air flow.
  • a plurality of heat transfer units 2 according to the second and third embodiments may be provided side by side along the flow direction of the air flow and the direction orthogonal to the flow direction of the air flow.
  • the heat transfer unit 2 since the inlets 22 of the first air passage 5 and the second air passage 6 have a large opening width, the larger the square size of the heat exchange element 1, the larger the inlet 22 of the heat transfer units 2. It is necessary to devise ways to maintain the strength of the surroundings. Further, since the air passage widths of the first air passage 5 and the second air passage 6 become narrower toward the downstream side along the air flow direction, it is necessary to suppress an increase in pressure loss. Therefore, in the present embodiment, the heat transfer unit 2 according to the first embodiment is set as one unit, and a plurality of units of the heat transfer unit 2 are provided in series along the air flow direction and the orthogonal direction.
  • the plurality of heat transfer units 2 By arranging the plurality of heat transfer units 2 in the orthogonal direction, it is possible to suppress the deflection of the heat transfer units 2 around the inflow port 22. Further, since the plurality of heat transfer units 2 are arranged in the air flow direction, the air flow passing through one heat transfer unit 2 is guided to the first width air passage 9 of the heat transfer unit 2 located on the downstream side. The second width air passage 10 and the third width air passage 11 flow in this order. That is, the air flow passes through the wide air passage and the narrow air passage of one heat transfer unit 2, and then passes through the wide air passage and the narrow air passage of the next heat transfer unit 2. It will pass.
  • the air passage width is narrower than that in the case where only one heat transfer unit 2 is provided in the air flow direction. It is possible to suppress an increase in pressure loss due to conversion.
  • FIG. 6 is a schematic view showing the heat exchange ventilation device 100 according to the fifth embodiment of the present invention.
  • the same reference numerals are given to the parts overlapping with the first embodiment, and the description thereof will be omitted.
  • the heat exchange ventilation device 100 includes an air supply blower 14, an exhaust blower 15, a heat exchange element 1, and a casing 13. Note that FIG. 6 schematically shows a state in which the inside of the casing 13 is viewed from above.
  • the casing 13 is a box-shaped member that houses the air supply blower 14, the exhaust blower 15, and the heat exchange element 1. Inside the casing 13, an air supply air passage 16 through which the first air flow 7 passes and an exhaust air passage 17 through which the second air flow 8 passes are provided.
  • the first air flow 7 is an air supply from the outside to the inside of the room.
  • the second air flow 8 is an exhaust flow from the room to the outside.
  • a supply air outlet 20 and an exhaust suction port 19 are provided on the side surface of the casing 13 on the indoor side.
  • a supply air suction port 18 and an exhaust air outlet 21 are provided on the outdoor side surface of the casing 13.
  • the air supply blower 14 is arranged in the air supply air passage 16.
  • the air supply blower 14 takes in outdoor air from the air supply suction port 18 into the air supply air passage 16 to generate a first air flow 7.
  • the first air flow 7 flows through the air supply air passage 16 and is blown out from the air supply outlet 20 toward the room.
  • the air supply blower 14 sends the first air flow 7 from the outside to the inside to the first air passage 5 shown in FIG.
  • the exhaust blower 15 is arranged in the exhaust air passage 17.
  • the exhaust blower 15 takes in indoor air from the exhaust suction port 19 into the exhaust air passage 17 to generate a second air flow 8.
  • the second air flow 8 flows through the exhaust air passage 17 and is blown out from the exhaust outlet 21 toward the outside.
  • the exhaust blower 15 sends the second air flow 8 from the room to the outside to the second air passage 6 shown in FIG.
  • any one of the heat exchange elements 1 according to the above embodiments 1 to 4 is used.
  • the heat exchange element 1 is provided at a position where the air supply air passage 16 and the exhaust air passage 17 intersect.
  • the heat exchange element 1 performs total heat exchange between the first air flow 7 flowing through the supply air passage 16 and the second air flow 8 flowing through the exhaust air passage 17.
  • the heat exchange ventilation device 100 recovers the sensible heat and latent heat of the exhaust flow from the room by total heat exchange in the heat exchange element 1, and transfers the recovered sensible heat and latent heat to the air supply airflow. Further, the heat exchange ventilation device 100 recovers the sensible heat and the latent heat of the air supply from the outdoor by exchanging the total heat with the heat exchange element 1, and transfers the recovered sensible heat and the latent heat to the exhaust flow.
  • the heat exchange ventilation device 100 can improve the efficiency of heating and cooling in the room and the efficiency of dehumidification and dehumidification, and can reduce the energy used for air conditioning in the room.
  • the heat exchange element 1 may be configured to transmit only sensible heat between the exhaust flow and the air flow.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchange element (1) is equipped with first heat transfer units (2a) forming first air passages (5), and second heat transfer units (2b) forming second air passages (6). The first air passages (5) and second air passages (6) have a first-width air passage (9), which extends downstream in the airflow direction from an air flow inflow opening (22), and two or more second-width air passages (10), which are formed by dividing the first-width air passage (9) into two or more passages on the downstream side of the first-width air passage (9). The air passage width of the second-width air passages (10) is less than the air passage width of the first-width air passages (9).

Description

熱交換素子および熱交換換気装置Heat exchange element and heat exchange ventilation system
　本発明は、空気流同士の間で熱交換を行う熱交換素子および熱交換換気装置に関する。 The present invention relates to a heat exchange element and a heat exchange ventilation device that exchange heat between air streams.
　従来、室外から室内への給気流と室内から室外への排気流との間で熱交換を行う熱交換換気装置が知られている。熱交換換気装置を使用した換気を行うことで、室内の冷暖房の効率と除加湿の効率とを向上させ、室内の空調に使用されるエネルギーの低減を図ることができる。 Conventionally, a heat exchange ventilation device that exchanges heat between the air supply from the outside to the room and the exhaust flow from the room to the outside is known. By performing ventilation using a heat exchange ventilation device, it is possible to improve the efficiency of heating and cooling in the room and the efficiency of dehumidification and dehumidification, and reduce the energy used for air conditioning in the room.
　熱交換換気装置は、熱交換を行う熱交換素子を備える。熱交換素子には、給気風路と排気風路とが設けられている。給気風路と排気風路とは、仕切部材を挟んで互いに独立した風路となっている。熱交換素子では、給気風路を流れる給気流と排気風路を流れる排気流との間で、仕切部材を介して熱が伝達される。熱交換素子には、熱交換効率の向上が求められる。 The heat exchange ventilation device is equipped with a heat exchange element that exchanges heat. The heat exchange element is provided with an air supply air passage and an exhaust air passage. The air supply air passage and the exhaust air passage are independent air passages with a partition member in between. In the heat exchange element, heat is transferred between the air supply airflow flowing through the air supply air passage and the exhaust flow flowing through the exhaust air passage through the partition member. The heat exchange element is required to improve the heat exchange efficiency.
　特許文献１には、仕切部材に凹凸を設けることで伝熱面積を増加させるとともに空気流の乱れを発生させて、熱交換効率の改善を図る技術が開示されている。 Patent Document 1 discloses a technique for improving heat exchange efficiency by increasing the heat transfer area and generating turbulence of the air flow by providing unevenness on the partition member.
特開平４－２７３９９３号公報Japanese Unexamined Patent Publication No. 4-273939
　しかし、特許文献１に開示された技術では、仕切部材の凸部で乱流が発達しすぎたり、仕切部材の凹部が深すぎたりすることで、仕切部材の伝熱面から空気流が剥離されやすいため、伝熱効率の悪い領域ができてしまう場合がある。これにより、熱交換効率の改善が不十分となる可能性があるという問題がある。 However, in the technique disclosed in Patent Document 1, the turbulent flow develops too much at the convex portion of the partition member, or the concave portion of the partition member becomes too deep, so that the air flow is separated from the heat transfer surface of the partition member. Since it is easy, a region with poor heat transfer efficiency may be created. As a result, there is a problem that the improvement of heat exchange efficiency may be insufficient.
　本発明は、上記に鑑みてなされたものであって、熱交換効率を向上させることができる熱交換素子を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to obtain a heat exchange element capable of improving heat exchange efficiency.
　上述した課題を解決し、目的を達成するために、本発明にかかる熱交換素子は、第１風路を形成する第１伝熱ユニットと、第２風路を形成する第２伝熱ユニットとを備える。第１風路および第２風路は、空気流の流入口から空気流の流れ方向に沿った下流側に向けて延びる第１幅風路と、第１幅風路の下流側で第１幅風路を２つ以上に分岐させて形成された２つ以上の第２幅風路とを有する。第２幅風路の風路幅は、第１幅風路の風路幅よりも狭い。 In order to solve the above-mentioned problems and achieve the object, the heat exchange elements according to the present invention include a first heat transfer unit that forms a first air passage and a second heat transfer unit that forms a second air passage. To be equipped. The first and second air passages are a first width air passage extending from the air flow inlet toward the downstream side along the air flow direction, and a first width air passage on the downstream side of the first width air flow. It has two or more second width air passages formed by branching the air passage into two or more. The air passage width of the second width air passage is narrower than the air passage width of the first width air passage.
　本発明によれば、熱交換効率を向上させることができるという効果を奏する。 According to the present invention, there is an effect that the heat exchange efficiency can be improved.
本発明の実施の形態１にかかる熱交換素子を示す分解斜視図An exploded perspective view showing a heat exchange element according to the first embodiment of the present invention. 本発明の実施の形態１にかかる熱交換素子の伝熱ユニットの斜視図Perspective view of the heat transfer unit of the heat exchange element according to the first embodiment of the present invention. 本発明の実施の形態２にかかる熱交換素子の伝熱ユニットの斜視図Perspective view of the heat transfer unit of the heat exchange element according to the second embodiment of the present invention. 本発明の実施の形態３にかかる熱交換素子の伝熱ユニットの斜視図Perspective view of the heat transfer unit of the heat exchange element according to the third embodiment of the present invention. 本発明の実施の形態４にかかる熱交換素子の伝熱ユニットの斜視図Perspective view of the heat transfer unit of the heat exchange element according to the fourth embodiment of the present invention. 本発明の実施の形態５にかかる熱交換換気装置を示す模式図Schematic diagram showing the heat exchange ventilation device according to the fifth embodiment of the present invention.
　以下に、本発明の実施の形態にかかる熱交換素子および熱交換換気装置を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 The heat exchange element and the heat exchange ventilation device according to the embodiment of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to this embodiment.
実施の形態１．
　図１は、本発明の実施の形態１にかかる熱交換素子１を示す分解斜視図である。熱交換素子１は、第１風路５を形成する複数の第１伝熱ユニット２ａと、第２風路６を形成する複数の第２伝熱ユニット２ｂと備える。第１伝熱ユニット２ａと第２伝熱ユニット２ｂは、交互に積み重ねられている。以下、第１伝熱ユニット２ａと第２伝熱ユニット２ｂを総称して「伝熱ユニット２」という場合もある。 Embodiment 1.
FIG. 1 is an exploded perspective view showing a heat exchange element 1 according to the first embodiment of the present invention. The heat exchange element 1 includes a plurality of first heat transfer units 2a forming the first air passage 5 and a plurality of second heat transfer units 2b forming the second air passage 6. The first heat transfer unit 2a and the second heat transfer unit 2b are alternately stacked. Hereinafter, the first heat transfer unit 2a and the second heat transfer unit 2b may be collectively referred to as "heat transfer unit 2".
　各伝熱ユニット２は、１つの仕切部材３と、仕切部材３の上に設置されて隣り合う仕切部材３の間に第１風路５または第２風路６を形成する複数の間隔保持部材４とを備える。すなわち、熱交換素子１は、互いに間隔を空けて配置される複数の仕切部材３と、仕切部材３同士の間隔を保持する複数の間隔保持部材４とを備える。 Each heat transfer unit 2 is a plurality of spacing members that form a first air passage 5 or a second air passage 6 between one partition member 3 and the adjacent partition members 3 installed on the partition member 3. 4 and. That is, the heat exchange element 1 includes a plurality of partition members 3 arranged at intervals from each other, and a plurality of interval holding members 4 for maintaining the distance between the partition members 3.
　第１風路５と第２風路６との間は、仕切部材３で仕切られている。第１風路５と第２風路６は、仕切部材３を挟んで交互に設けられている。第１空気流７は、室外から室内への給気流である。第２空気流８は、室内から室外への排気流である。第１風路５には、第１空気流７が流れる。第２風路６には、第２空気流８が流れる。熱交換素子１は、第１空気流７の流れ方向と第２空気流８の流れ方向とが互いに直交する直交流型の全熱交換素子である。熱交換素子１では、第１空気流７と第２空気流８との間で、仕切部材３を介して熱が伝達される。以下、空気流の流れ方向を「空気流れ方向」と称し、空気流の流れ方向と直交する方向を「直交方向」と称する場合もある。 The first air passage 5 and the second air passage 6 are partitioned by a partition member 3. The first air passage 5 and the second air passage 6 are alternately provided with the partition member 3 interposed therebetween. The first air flow 7 is an air supply from the outside to the inside of the room. The second air flow 8 is an exhaust flow from the room to the outside. A first air flow 7 flows through the first air passage 5. A second air flow 8 flows through the second air passage 6. The heat exchange element 1 is a orthogonal flow type total heat exchange element in which the flow direction of the first air flow 7 and the flow direction of the second air flow 8 are orthogonal to each other. In the heat exchange element 1, heat is transferred between the first air flow 7 and the second air flow 8 via the partition member 3. Hereinafter, the flow direction of the air flow may be referred to as an "air flow direction", and the direction orthogonal to the flow direction of the air flow may be referred to as an "orthogonal direction".
　仕切部材３は、平面視で四角形状に形成された板状部材である。仕切部材３には、高叩解したパルプを用いて作製した機能紙、親水性樹脂を用いた複合樹脂膜などが使用される。仕切部材３には、吸湿作用を促すための吸湿剤が添加されているものを用いてもよい。吸湿剤には、塩化リチウム、塩化カルシウムなどの潮解性を持つ材料、デシカント剤などの緩やかな吸湿および放湿作用を持つ材料、ゼオライト、シリカゲルなどの吸着作用のある材料を用いてもよい。 The partition member 3 is a plate-shaped member formed in a quadrangular shape in a plan view. For the partition member 3, a functional paper made of highly beaten pulp, a composite resin film using a hydrophilic resin, or the like is used. As the partition member 3, a member to which a hygroscopic agent for promoting a hygroscopic action is added may be used. As the hygroscopic agent, a deliquescent material such as lithium chloride or calcium chloride, a material having a mild moisture absorbing / releasing action such as a desiccant agent, or a material having an adsorptive action such as zeolite or silica gel may be used.
　仕切部材３には、透湿作用を持たない樹脂板、樹脂膜などを用いてもよい。この場合、温度のみを交換させる顕熱交換素子として働くが、樹脂板にはＰＥＴ（Polyethylene　Terephthalate）、ＰＰ（Polypropylene）、ＡＢＳ（Acrylonitrile　Butadiene　Styrene）、ＰＳ（Polystyrene）などが使用される。また、樹脂膜には、ポリウレタン、ポリエチレンなどの薄膜を利用した複合樹脂膜を用いてもよい。薄膜を利用する場合には、製造上の強度および剛性を持たせるためにポリエステルなどの不織布を使用するのが好ましい。 For the partition member 3, a resin plate, a resin film, or the like having no moisture permeable effect may be used. In this case, it works as a heat exchange element that exchanges only the temperature, but PET (Polyethylene terephthalate), PP (Polypropylene), ABS (Acrylonitrile Butadinee Styrene), PS (Polystyrene), etc. are used for the resin plate. Further, as the resin film, a composite resin film using a thin film such as polyurethane or polyethylene may be used. When a thin film is used, it is preferable to use a non-woven fabric such as polyester in order to provide manufacturing strength and rigidity.
　間隔保持部材４の形状は、特に制限されないが、本実施の形態では四角柱である。間隔保持部材４は、空気流れ方向に沿って延びている。間隔保持部材４には、仕切部材３の間隔寸法を精度よく保つ材料および構造が必要である。間隔保持部材４は、ＰＰ、ＡＢＳ、ＰＳなどの樹脂材料を利用した角材、パルプモールドを利用した紙製の角材、中空に成形されたＰＥＴまたはＰＰの樹脂材、紙または樹脂膜を折り曲げた中空部材で形成されてもよい。仕切部材３に透湿作用を持たせない場合には、間隔保持部材４と仕切部材３とを同一素材で一体成形することもできる。このようにすると、生産性を高めることができ、コストを低減することができる。また、間隔保持部材４を中空形状とすることで熱交換素子１の軽量化も図ることができる。 The shape of the spacing member 4 is not particularly limited, but in the present embodiment, it is a square pillar. The spacing member 4 extends along the air flow direction. The interval holding member 4 needs a material and a structure for accurately maintaining the interval dimension of the partition member 3. The space-holding member 4 is a square material made of a resin material such as PP, ABS, PS, a square material made of paper using a pulp mold, a PET or PP resin material formed in a hollow shape, or a hollow material obtained by bending a paper or resin film. It may be formed of a member. When the partition member 3 is not provided with a moisture permeable effect, the interval holding member 4 and the partition member 3 can be integrally molded with the same material. In this way, productivity can be increased and costs can be reduced. Further, by making the interval holding member 4 hollow, the weight of the heat exchange element 1 can be reduced.
　図２は、本発明の実施の形態１にかかる熱交換素子１の伝熱ユニット２の斜視図である。１枚の仕切部材３の上には、長さの異なる複数の間隔保持部材４が設置されている。本実施の形態では、空気流れ方向に沿って長さが異なる３種類の間隔保持部材４を用いている。以下、最も長い間隔保持部材４を「第１間隔保持部材４１」、二番目に長い間隔保持部材４を「第２間隔保持部材４２」、最も短い間隔保持部材４を「第３間隔保持部材４３」と称する。本実施の形態では、２本の第１間隔保持部材４１、２本の第２間隔保持部材４２、３本の第３間隔保持部材４３を設置する場合を例示する。以下の説明で、上流側および下流側とは、空気流の流れ方向に沿った上流側および下流側を意味する。 FIG. 2 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the first embodiment of the present invention. A plurality of spacing members 4 having different lengths are installed on one partition member 3. In this embodiment, three types of spacing members 4 having different lengths along the air flow direction are used. Hereinafter, the longest interval holding member 4 is the "first interval holding member 41", the second longest interval holding member 4 is the "second interval holding member 42", and the shortest interval holding member 4 is the "third interval holding member 43". ". In this embodiment, a case where two first interval holding members 41, two second interval holding members 42, and three third interval holding members 43 are installed is illustrated. In the following description, the upstream side and the downstream side mean the upstream side and the downstream side along the flow direction of the air flow.
　第１間隔保持部材４１は、第１幅風路９の風路幅Ｘ１を規定する部材である。第１間隔保持部材４１は、仕切部材３のうち空気流の流れ方向と直交する方向に沿った両端部の全長に亘って設置されている。２本の第１間隔保持部材４１の間のうち第２間隔保持部材４２よりも上流側には、第１幅風路９が形成されている。第１幅風路９については後に詳しく説明する。 The first interval holding member 41 is a member that defines the air passage width X1 of the first width air passage 9. The first interval holding member 41 is installed over the entire length of both ends of the partition member 3 along the direction orthogonal to the flow direction of the air flow. A first width air passage 9 is formed between the two first spacing holding members 41 on the upstream side of the second spacing holding member 42. The first width air passage 9 will be described in detail later.
　第２間隔保持部材４２は、第２幅風路１０の風路幅Ｘ２を規定する部材である。第２間隔保持部材４２は、２本の第１間隔保持部材４１の間に設置されている。２本の第２間隔保持部材４２は、直交方向に沿って互いに間隔を空けて設置されている。２本の第２間隔保持部材４２の間隔および隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間隔は、等しい。第２間隔保持部材４２は、仕切部材３の風下側端部３１から上流側に向かって延びている。第２間隔保持部材４２の風上側端面４２ａは、第１間隔保持部材４１の風上側端面４１ａよりも下流側に位置している。２本の第２間隔保持部材４２の間のうち第３間隔保持部材４３よりも上流側には、第２幅風路１０が形成されている。また、隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間のうち第３間隔保持部材４３よりも上流側には、第２幅風路１０が形成されている。第２幅風路１０については後に詳しく説明する。 The second interval holding member 42 is a member that defines the air passage width X2 of the second width air passage 10. The second interval holding member 42 is installed between the two first interval holding members 41. The two second spacing members 42 are installed at intervals along the orthogonal direction. The distance between the two second gap holding members 42 and the distance between the adjacent second gap holding member 42 and the first gap holding member 41 are equal. The second spacing member 42 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end surface 42a of the second spacing member 42 is located downstream of the windward end surface 41a of the first spacing member 41. A second width air passage 10 is formed between the two second gap holding members 42 on the upstream side of the third gap holding member 43. Further, a second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41 on the upstream side of the third gap holding member 43. The second width air passage 10 will be described in detail later.
　第３間隔保持部材４３は、第３幅風路１１の風路幅Ｘ３を規定する部材である。３本の第３間隔保持部材４３は、直交方向に沿って互いに間隔を空けて設置されている。第３間隔保持部材４３は、隣り合う第１間隔保持部材４１と第２間隔保持部材４２との間および隣り合う第２間隔保持部材４２の間に１本ずつ設置されている。第３間隔保持部材４３は、仕切部材３の風下側端部３１から上流側に向かって延びている。第３間隔保持部材４３の風上側端面４３ａは、第１間隔保持部材４１の風上側端面４１ａおよび第２間隔保持部材４２の風上側端面４２ａよりも下流側に位置している。隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間隔および隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間隔は、等しい。隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間には、第３幅風路１１が形成されている。また、隣り合う第３間隔保持部材４３と第２間隔保持部材４２との間には、第３幅風路１１が形成されている。第３幅風路１１については後に詳しく説明する。 The third interval holding member 43 is a member that defines the air passage width X3 of the third width air passage 11. The three third spacing members 43 are installed at intervals along the orthogonal direction. The third interval holding member 43 is installed one by one between the adjacent first interval holding member 41 and the second interval holding member 42 and between the adjacent second interval holding member 42. The third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end surface 43a of the third spacing member 43 is located downstream of the windward end surface 41a of the first spacing member 41 and the windward end surface 42a of the second spacing member 42. The distance between the adjacent third gap holding member 43 and the first gap holding member 41 and the distance between the adjacent second gap holding member 42 and the first gap holding member 41 are equal. A third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41. Further, a third width air passage 11 is formed between the adjacent third interval holding member 43 and the second interval holding member 42. The third width air passage 11 will be described in detail later.
　次に、図２を参照して、第１幅風路９、第２幅風路１０および第３幅風路１１について説明する。なお、第１風路５と第２風路６とは空気流が流れる向きが異なるだけでその他の構成は同一であるため、ここでは第１風路５を例にとって説明し、第２風路６の説明は省略する。第１風路５の風路幅は、空気流れ方向に沿った下流側に向かうほど段階的に狭まる。第１風路５は、第１空気流７の流入口２２から空気流れ方向に沿った下流側に向けて延びる第１幅風路９と、第１幅風路９の下流側で第１幅風路９を２つ以上に分岐させて形成された２つ以上の第２幅風路１０と、第２幅風路１０の下流側で第２幅風路１０を２つ以上に分岐させて形成された２つ以上の第３幅風路１１とを有する。本実施の形態では、１つの第１幅風路９、３つの第２幅風路１０、６つの第３幅風路１１を設ける場合を例示するが、各幅風路９，１０，１１の数を限定する趣旨ではない。 Next, with reference to FIG. 2, the first width air passage 9, the second width air passage 10, and the third width air passage 11 will be described. Since the first air passage 5 and the second air passage 6 differ only in the direction in which the air flow flows and have the same other configurations, the first air passage 5 will be described as an example here, and the second air passage will be described. The description of 6 will be omitted. The width of the first air passage 5 gradually narrows toward the downstream side along the air flow direction. The first air passage 5 has a first width air passage 9 extending from the inlet 22 of the first air flow 7 toward the downstream side along the air flow direction, and a first width on the downstream side of the first width air passage 9. Two or more second width air passages 10 formed by branching the air passage 9 into two or more, and the second width air passage 10 branched into two or more on the downstream side of the second width air passage 10. It has two or more third width air passages 11 formed. In the present embodiment, a case where one first width air passage 9, three second width air passages 10, and six third width air passages 11 are provided is illustrated, but the width air passages 9, 10, and 11 are provided. It is not intended to limit the number.
　第１幅風路９の風路幅Ｘ１は、第１風路５の中で最も広い。第１幅風路９は、空気流れ方向に沿って第１風路長さＹ１で延びている。 The air passage width X1 of the first width air passage 9 is the widest in the first air passage 5. The first width air passage 9 extends along the air flow direction with a first air passage length Y1.
　第２幅風路１０の風路幅Ｘ２は、第１幅風路９の風路幅Ｘ１よりも狭い。第２幅風路１０は、空気流れ方向に沿って第２風路長さＹ２で延びている。 The air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9. The second width air passage 10 extends along the air flow direction with a second air passage length Y2.
　第３幅風路１１の風路幅Ｘ３は、第１幅風路９の風路幅Ｘ１および第２幅風路１０の風路幅Ｘ２よりも狭い。第３幅風路１１は、空気流れ方向に沿って第３風路長さＹ３で延びている。第１風路５の風路高さＺ１は、空気流れ方向の全長に亘って一定である。つまり、第１幅風路９、第２幅風路１０および第３幅風路１１の高さは、同一である。 The air passage width X3 of the third width air passage 11 is narrower than the air passage width X1 of the first width air passage 9 and the air passage width X2 of the second width air passage 10. The third width air passage 11 extends along the air flow direction with a third air passage length Y3. The air passage height Z1 of the first air passage 5 is constant over the entire length in the air flow direction. That is, the heights of the first width air passage 9, the second width air passage 10, and the third width air passage 11 are the same.
　第１幅風路９の第１風路長さＹ１、第２幅風路１０の第２風路長さＹ２、第３幅風路１１の第３風路長さＹ３は、助走区間の長さ以下とする。助走区間とは、空気流の乱れが適度に発生する区間のことをいう。第１幅風路９の助走区間の長さＬＬ１は、下記式（１）で表される。Ｒｅは、第１空気流７のレイノルズ数とする。Ｄ１は、第１幅風路９の等価直径とする。第１幅風路９の等価直径とは、空気流の流動の観点から、第１幅風路９と等価とみなし得る円筒風路の内径である。
　ＬＬ１＝０．０５６×Ｒｅ×Ｄ１・・・（１） The first air passage length Y1 of the first width air passage 9, the second air passage length Y2 of the second width air passage 10, and the third air passage length Y3 of the third width air passage 11 are the lengths of the approach sections. It is less than or equal to. The run-up section is a section in which turbulence of the air flow occurs moderately. The length LL1 of the approach section of the first width air passage 9 is represented by the following equation (1). Re is the Reynolds number of the first air flow 7. D1 is the equivalent diameter of the first width air passage 9. The equivalent diameter of the first width air passage 9 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the first width air passage 9 from the viewpoint of the flow of air flow.
LL1 = 0.056 x Re x D1 ... (1)
　空気流の流れ方向に沿った第１幅風路９の第１風路長さＹ１は、第１幅風路９の助走区間の長さＬＬ１以下であることが好ましい。よって、下記式（２）が成立することが好ましい。
　Ｙ１≦０．０５６×Ｒｅ×Ｄ１・・・（２） The first air passage length Y1 of the first width air passage 9 along the flow direction of the air flow is preferably equal to or less than the length LL1 of the approach section of the first width air passage 9. Therefore, it is preferable that the following equation (2) holds.
Y1 ≤ 0.056 x Re x D1 ... (2)
　第２幅風路１０の助走区間の長さＬＬ２は、下記式（３）で表される。Ｒｅは、上記式（１）と同じである。Ｄ２は、第２幅風路１０の等価直径とする。第２幅風路１０の等価直径とは、空気流の流動の観点から、第２幅風路１０と等価とみなし得る円筒風路の内径である。
　ＬＬ２＝０．０５６×Ｒｅ×Ｄ２・・・（３） The length LL2 of the approach section of the second width air passage 10 is represented by the following equation (3). Re is the same as the above equation (1). D2 is the equivalent diameter of the second width air passage 10. The equivalent diameter of the second width air passage 10 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the second width air passage 10 from the viewpoint of the flow of air flow.
LL2 = 0.056 x Re x D2 ... (3)
　空気流の流れ方向に沿った第２幅風路１０の第２風路長さＹ２は、第２幅風路１０の助走区間の長さＬＬ２以下であることが好ましい。よって、下記式（４）が成立することが好ましい。
　Ｙ２≦０．０５６×Ｒｅ×Ｄ２・・・（４） The second air passage length Y2 of the second width air passage 10 along the flow direction of the air flow is preferably equal to or less than the length LL2 of the approach section of the second width air passage 10. Therefore, it is preferable that the following equation (4) holds.
Y2 ≤ 0.056 x Re x D2 ... (4)
　第３幅風路１１の助走区間の長さＬＬ３は、下記式（５）で表される。Ｒｅは、上記式（１）と同じである。Ｄ３は、第３幅風路１１の等価直径とする。第３幅風路１１の等価直径とは、空気流の流動の観点から、第３幅風路１１と等価とみなし得る円筒風路の内径である。
　ＬＬ３＝０．０５６×Ｒｅ×Ｄ３・・・（５） The length LL3 of the approach section of the third width air passage 11 is represented by the following equation (5). Re is the same as the above equation (1). D3 is the equivalent diameter of the third width air passage 11. The equivalent diameter of the third width air passage 11 is the inner diameter of the cylindrical air passage that can be regarded as equivalent to the third width air passage 11 from the viewpoint of the flow of air flow.
LL3 = 0.056 x Re x D3 ... (5)
　空気流の流れ方向に沿った第３幅風路１１の第３風路長さＹ３は、第３幅風路１１の助走区間の長さＬＬ３以下であることが好ましい。よって、下記式（６）が成立することが好ましい。
　Ｙ３≦０．０５６×Ｒｅ×Ｄ３・・・（６） The third air passage length Y3 of the third width air passage 11 along the flow direction of the air flow is preferably not more than the length LL3 of the approach section of the third width air passage 11. Therefore, it is preferable that the following equation (6) holds.
Y3 ≤ 0.056 x Re x D3 ... (6)
　第１幅風路９の等価直径Ｄ１は、下記式（７）で表される。Ｓ１は、第１幅風路９の風路断面積とする。Ｌ１は、第１幅風路９の断面の周長、すなわち第１幅風路９の濡れぶち長さとする。風路断面積の単位はｍ2とする。
　Ｄ１＝４×Ｓ１／Ｌ１・・・（７） The equivalent diameter D1 of the first width air passage 9 is represented by the following equation (7). S1 is the air passage cross-sectional area of the first width air passage 9. L1 is the peripheral length of the cross section of the first width air passage 9, that is, the wet edge length of the first width air passage 9. The unit of air passage cross-sectional area is m 2 .
D1 = 4 × S1 / L1 ... (7)
　第２幅風路１０の等価直径Ｄ２は、下記式（８）で表される。Ｓ２は、第２幅風路１０の風路断面積とする。Ｌ２は、第２幅風路１０の断面の周長、すなわち第２幅風路１０の濡れぶち長さとする。風路断面積の単位はｍ2とする。
　Ｄ２＝４×Ｓ２／Ｌ２・・・（８） The equivalent diameter D2 of the second width air passage 10 is represented by the following equation (8). S2 is the air passage cross-sectional area of the second width air passage 10. L2 is the peripheral length of the cross section of the second width air passage 10, that is, the wet edge length of the second width air passage 10. The unit of air passage cross-sectional area is m 2 .
D2 = 4 × S2 / L2 ... (8)
　第３幅風路１１の等価直径Ｄ３は、下記式（９）で表される。Ｓ３は、第３幅風路１１の風路断面積とする。Ｌ３は、第３幅風路１１の断面の周長、すなわち第３幅風路１１の濡れぶち長さとする。風路断面積の単位はｍ2とする。
　Ｄ３＝４×Ｓ３／Ｌ３・・・（９） The equivalent diameter D3 of the third width air passage 11 is represented by the following equation (9). S3 is the air passage cross-sectional area of the third width air passage 11. L3 is the peripheral length of the cross section of the third width air passage 11, that is, the wet edge length of the third width air passage 11. The unit of air passage cross-sectional area is m 2 .
D3 = 4 × S3 / L3 ... (9)
　第１幅風路９は、本実施形態では矩形状の断面を成しているとみなし、第１幅風路９の風路断面積Ｓ１は、下記式（１０）で表される。Ｚ１は、第１風路５の風路高さである。
　Ｓ１＝Ｘ１×Ｚ１・・・（１０） In the present embodiment, the first width air passage 9 is considered to have a rectangular cross section, and the air passage cross-sectional area S1 of the first width air passage 9 is represented by the following equation (10). Z1 is the air passage height of the first air passage 5.
S1 = X1 × Z1 ... (10)
　第２幅風路１０は、本実施形態では矩形状の断面を成しているとみなし、第２幅風路１０の風路断面積Ｓ２は、下記式（１１）で表される。
　Ｓ２＝Ｘ２×Ｚ１・・・（１１） In the present embodiment, the second width air passage 10 is considered to have a rectangular cross section, and the air passage cross-sectional area S2 of the second width air passage 10 is represented by the following equation (11).
S2 = X2 × Z1 ... (11)
　第３幅風路１１は、本実施形態では矩形状の断面を成しているとみなし、第３幅風路１１の風路断面積Ｓ３は、下記式（１２）で表される。
　Ｓ３＝Ｘ３×Ｚ１・・・（１２） In the present embodiment, the third width air passage 11 is considered to have a rectangular cross section, and the air passage cross-sectional area S3 of the third width air passage 11 is represented by the following equation (12).
S3 = X3 × Z1 ... (12)
　第１幅風路９の濡れぶち長さＬ１は、下記式（１３）で表される。
　Ｌ１＝２×（Ｘ１＋Ｚ１）・・・（１３） The wet edge length L1 of the first width air passage 9 is represented by the following equation (13).
L1 = 2 × (X1 + Z1) ... (13)
　第２幅風路１０の濡れぶち長さＬ２は、下記式（１４）で表される。
　Ｌ２＝２×（Ｘ２＋Ｚ１）・・・（１４） The wet edge length L2 of the second width air passage 10 is represented by the following equation (14).
L2 = 2 × (X2 + Z1) ... (14)
　第３幅風路１１の濡れぶち長さＬ３は、下記式（１５）で表される。
　Ｌ３＝２×（Ｘ３＋Ｚ１）・・・（１５） The wet edge length L3 of the third width air passage 11 is represented by the following equation (15).
L3 = 2 × (X3 + Z1) ... (15)
　第１幅風路９のレイノルズ数Ｒｅは、下記式（１６）で表される。Ｖ１は、第１幅風路９における第１空気流７の平均流速とする。Ｖの単位はメートル毎秒とする。νは、第１風路５における第１空気流７の動粘性係数とする。νの単位は平方メートル毎秒とする。大気圧下の空気が２０℃の場合、動粘性係数νは、１．５×１０-6ｍ2／ｓが一般的に使用される。
　Ｒｅ＝（Ｄ１）×（Ｖ１）/（ν）・・・（１６） The Reynolds number Re of the first width air passage 9 is expressed by the following equation (16). V1 is the average flow velocity of the first air flow 7 in the first width air passage 9. The unit of V is meters per second. ν is the kinematic viscosity coefficient of the first air flow 7 in the first air passage 5. The unit of ν is square meters per second. When the air under atmospheric pressure is 20 ° C., the kinematic viscosity coefficient ν is generally 1.5 × 10 -6 m 2 / s.
Re = (D1) × (V1) / (ν) ・ ・ ・ (16)
　第１幅風路９における第１空気流７の平均流速Ｖ１は、下記式（１７）で表される。Ｑ１は、第１幅風路９を流れる第１空気流７の流量とする。Ｑの単位は立法メートルとする。
　Ｖ１＝Ｑ１／Ｓ１・・・（１７） The average flow velocity V1 of the first air flow 7 in the first width air passage 9 is represented by the following equation (17). Q1 is the flow rate of the first air flow 7 flowing through the first width air passage 9. The unit of Q is cubic meters.
V1 = Q1 / S1 ... (17)
　第２幅風路１０のレイノルズ数Ｒｅは、下記式（１８）で表される。Ｖ２は、第２幅風路１０における第１空気流７の平均流速とする。
　Ｒｅ＝（Ｄ２）×（Ｖ２）/（ν）・・・（１８） The Reynolds number Re of the second width air passage 10 is expressed by the following equation (18). V2 is the average flow velocity of the first air flow 7 in the second width air passage 10.
Re = (D2) × (V2) / (ν) ・ ・ ・ (18)
　第２幅風路１０における第１空気流７の平均流速Ｖ２は、下記式（１９）で表される。Ｑ２は、第２幅風路１０を流れる第１空気流７の流量とする。
　Ｖ２＝Ｑ２／Ｓ２・・・（１９） The average flow velocity V2 of the first air flow 7 in the second width air passage 10 is represented by the following equation (19). Q2 is the flow rate of the first air flow 7 flowing through the second width air passage 10.
V2 = Q2 / S2 ... (19)
　第３幅風路１１のレイノルズ数Ｒｅは、下記式（２０）で表される。Ｖ３は、第３幅風路１１における第１空気流７の平均流速とする。
　Ｒｅ＝（Ｄ３）×（Ｖ３）/（ν）・・・（２０） The Reynolds number Re of the third width air passage 11 is expressed by the following equation (20). V3 is the average flow velocity of the first air flow 7 in the third width air passage 11.
Re = (D3) × (V3) / (ν) ・ ・ ・ (20)
　第３幅風路１１における第１空気流７の平均流速Ｖ３は、下記式（２１）で表される。Ｑ３は、第３幅風路１１を流れる第１空気流７の流量とする。
　Ｖ３＝Ｑ３／Ｓ３・・・（２１） The average flow velocity V3 of the first air flow 7 in the third width air passage 11 is represented by the following equation (21). Q3 is the flow rate of the first air flow 7 flowing through the third width air passage 11.
V3 = Q3 / S3 ... (21)
　本実施の形態では、上記式で求められる第１幅風路９の助走区間の長さＬＬ１と第１幅風路９の第１風路長さＹ１を等しくした。また、第２幅風路１０の助走区間の長さＬＬ２と第２幅風路１０の第２風路長さＹ２を等しくした。また、第３幅風路１１の助走区間の長さＬＬ３と第３幅風路１１の第３風路長さＹ３を等しくした。 In the present embodiment, the length LL1 of the approach section of the first width air passage 9 and the first air passage length Y1 of the first width air passage 9 obtained by the above formula are made equal. Further, the length LL2 of the approach section of the second width air passage 10 and the second air passage length Y2 of the second width air passage 10 were made equal. Further, the length LL3 of the approach section of the third width air passage 11 and the third air passage length Y3 of the third width air passage 11 were made equal.
　次に、熱交換素子１の作用効果について説明する。 Next, the action and effect of the heat exchange element 1 will be described.
　本実施の形態では、第１風路５および第２風路６は、流入口２２から空気流の流れ方向に沿った下流側に向けて延びる１つの第１幅風路９と、第１幅風路９の下流側で第１幅風路９を３つに分岐させて形成された３つの第２幅風路１０と、第２幅風路１０の下流側で第２幅風路１０を６つに分岐させて形成された６つの第３幅風路１１とを有する。また、第２幅風路１０の風路幅Ｘ２は、第１幅風路９の風路幅Ｘ１よりも狭く、第３幅風路１１の風路幅Ｘ３は、第２幅風路１０の風路幅Ｘ２よりも狭い。そのため、第１風路５および第２風路６の空気流れ方向の全長に亘って助走区間を繰り返し発生させて、仕切部材３の伝熱面からの空気流の剥離を抑制しながら空気流の乱れを適度に発生させることができる。仕切部材３の伝熱面からの空気流の剥離を抑制することで空気が伝熱面に接触する接触面積を増やすことができ、空気流の乱れを発生させることで第１風路５および第２風路６の内壁面に対する熱伝達率および物質伝達率が高まる。これにより、熱交換素子１の全熱交換効率を向上させることができる。なお、本発明者の実験および研究によれば、各幅風路９，１０，１１の長さを助走区間よりも長くして、助走空間の空気流と助走区間を過ぎた後の空気流とを比較すると、助走区間を過ぎた後よりも助走区間の方が空気流の乱れが生じやすくなることが判明した。空気が風路の内壁面に伝熱および物質伝達をしながら流れる熱交換素子１の風路内においては、空気流の乱れにより空気流の温度および湿度が混ざり合い、温度の境界層および湿度の境界層が破壊される。そのため、助走区間を過ぎた後よりも助走区間の方が第１風路５および第２風路６の内壁面に対する熱伝達率および物質伝達率が高くなる。 In the present embodiment, the first air passage 5 and the second air passage 6 are a first width air passage 9 extending from the inflow port 22 toward the downstream side along the flow direction of the air flow, and a first width. Three second width air passages 10 formed by branching the first width air passage 9 into three on the downstream side of the air passage 9, and a second width air passage 10 on the downstream side of the second width air passage 10. It has six third width air passages 11 formed by branching into six. Further, the air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9, and the air passage width X3 of the third width air passage 11 is the air passage width X3 of the second width air passage 10. It is narrower than the air passage width X2. Therefore, the approach section is repeatedly generated over the entire length of the first air passage 5 and the second air passage 6 in the air flow direction, and the air flow is suppressed while suppressing the separation of the air flow from the heat transfer surface of the partition member 3. Disturbance can be generated moderately. By suppressing the separation of the air flow from the heat transfer surface of the partition member 3, the contact area where the air comes into contact with the heat transfer surface can be increased, and by generating the turbulence of the air flow, the first air passage 5 and the first air passage 5 and the first 2 The heat transfer coefficient and the material transfer rate to the inner wall surface of the air passage 6 are increased. As a result, the total heat exchange efficiency of the heat exchange element 1 can be improved. According to the experiments and studies of the present inventor, the length of each width air passage 9, 10 and 11 is made longer than the approach section, and the air flow in the approach space and the air flow after passing the approach section. It was found that the air flow was more likely to be turbulent in the approach section than after the approach section was passed. In the air passage of the heat exchange element 1 in which air flows while transferring heat and substances to the inner wall surface of the air passage, the temperature and humidity of the air flow are mixed due to the turbulence of the air flow, and the temperature boundary layer and humidity The boundary layer is destroyed. Therefore, the heat transfer coefficient and the substance transfer coefficient to the inner wall surfaces of the first air passage 5 and the second air passage 6 are higher in the approach section than after passing the approach section.
　仕切部材に凹凸を設ける従来技術では、仕切部材の伝熱面から空気流が剥離されやすいため、伝熱効率の悪い領域ができてしまう場合がある。これにより、熱交換素子の全熱交換効率が向上しない可能性がある。これに対して、本実施の形態では、第１風路５および第２風路６の空気流れ方向の全長に亘って助走区間を繰り返し発生させることで、仕切部材３の伝熱面からの空気流の剥離を抑制することができる。これにより、従来技術に比べて、伝熱効率の悪い領域を減らすことができるため、熱交換素子１の全熱交換効率を向上させることができる。 In the conventional technique of providing unevenness on the partition member, the air flow is easily separated from the heat transfer surface of the partition member, so that a region having poor heat transfer efficiency may be created. As a result, the total heat exchange efficiency of the heat exchange element may not be improved. On the other hand, in the present embodiment, the run-up section is repeatedly generated over the entire length of the first air passage 5 and the second air passage 6 in the air flow direction, so that the air from the heat transfer surface of the partition member 3 is generated. The separation of the flow can be suppressed. As a result, the region where the heat transfer efficiency is poor can be reduced as compared with the conventional technique, so that the total heat exchange efficiency of the heat exchange element 1 can be improved.
　本実施の形態では、仕切部材３と間隔保持部材４とを個別に製造する場合には、接着剤による接着、または、材料が樹脂であれば熱溶着による接合を行うことで、図２に示す伝熱ユニット２を強固に作製することができる。これにより、図１に示すように間隔保持部材４の長さ方向を直交させた状態で複数の伝熱ユニット２を積層した場合でも、熱交換素子１の構造強度を向上させることができる。 In the present embodiment, when the partition member 3 and the interval holding member 4 are manufactured individually, they are bonded by an adhesive or, if the material is a resin, by heat transfer, as shown in FIG. The heat transfer unit 2 can be firmly manufactured. As a result, the structural strength of the heat exchange element 1 can be improved even when a plurality of heat transfer units 2 are laminated in a state where the length directions of the interval holding members 4 are orthogonal to each other as shown in FIG.
実施の形態２．
　図３は、本発明の実施の形態２にかかる熱交換素子１の伝熱ユニット２の斜視図である。なお、実施の形態２では、前記した実施の形態１と重複する部分については、同一符号を付して説明を省略する。 Embodiment 2.
FIG. 3 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the second embodiment of the present invention. In the second embodiment, the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
　間隔保持部材４の形状は、本実施の形態ではコルゲート形状である。間隔保持部材４は、仕切部材３から離れる方向に凸となる概ね三角形状に形成されている。第１幅風路９、第２幅風路１０および第３幅風路１１の断面形状は、台形状または三角形状である。なお、間隔保持部材４の内部、すなわち間隔保持部材４と仕切部材３とに囲まれた空間も風路となる。 The shape of the space holding member 4 is a corrugated shape in the present embodiment. The interval holding member 4 is formed in a substantially triangular shape that is convex in the direction away from the partition member 3. The cross-sectional shapes of the first width air passage 9, the second width air passage 10, and the third width air passage 11 are trapezoidal or triangular. The inside of the space holding member 4, that is, the space surrounded by the space holding member 4 and the partition member 3 also serves as an air passage.
　本実施の形態では、空気流れ方向に沿って長さが異なる４種類の間隔保持部材４を用いている。以下、最も長い間隔保持部材４を「第１間隔保持部材４１」、二番目に長い間隔保持部材４を「第２間隔保持部材４２」と称する。また、三番目に長い間隔保持部材４を「第３間隔保持部材４３」、最も短い間隔保持部材４を「第４間隔保持部材４４」と称する。本実施の形態では、２本の第１間隔保持部材４１、１本の第２間隔保持部材４２、２本の第３間隔保持部材４３、４本の第４間隔保持部材４４を設置する場合を例示する。 In this embodiment, four types of spacing members 4 having different lengths along the air flow direction are used. Hereinafter, the longest interval holding member 4 will be referred to as a "first interval holding member 41", and the second longest interval holding member 4 will be referred to as a "second interval holding member 42". Further, the third longest interval holding member 4 is referred to as a "third interval holding member 43", and the shortest interval holding member 4 is referred to as a "fourth interval holding member 44". In the present embodiment, there are cases where two first interval holding members 41, one second interval holding member 42, two third interval holding members 43, and four fourth interval holding members 44 are installed. Illustrate.
　第１間隔保持部材４１は、第１幅風路９の風路幅Ｘ１を規定する部材である。第１間隔保持部材４１は、仕切部材３のうち空気流の流れ方向と直交する方向に沿った両端部の全長に亘って設置されている。２本の第１間隔保持部材４１の間のうち第２間隔保持部材４２よりも上流側には、第１幅風路９が形成されている。第１幅風路９については後に詳しく説明する。 The first interval holding member 41 is a member that defines the air passage width X1 of the first width air passage 9. The first interval holding member 41 is installed over the entire length of both ends of the partition member 3 along the direction orthogonal to the flow direction of the air flow. A first width air passage 9 is formed between the two first spacing holding members 41 on the upstream side of the second spacing holding member 42. The first width air passage 9 will be described in detail later.
　第２間隔保持部材４２は、第２幅風路１０の風路幅Ｘ２を規定する部材である。第２間隔保持部材４２は、２本の第１間隔保持部材４１の間に設置されている。隣り合う第２間隔保持部材４２と一方の第１間隔保持部材４１との間隔および隣り合う第２間隔保持部材４２と他方の第１間隔保持部材４１との間隔は、等しい。すなわち、第２間隔保持部材４２は、直交方向で２本の第１間隔保持部材４１の中間位置に設置されている。第２間隔保持部材４２は、仕切部材３の風下側端部３１から上流側に向かって延びている。第２間隔保持部材４２の風上側端部は、第１間隔保持部材４１の風上側端部よりも下流側に位置している。隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間のうち第３間隔保持部材４３よりも上流側には、第２幅風路１０が形成されている。第２幅風路１０については後に詳しく説明する。 The second interval holding member 42 is a member that defines the air passage width X2 of the second width air passage 10. The second interval holding member 42 is installed between the two first interval holding members 41. The distance between the adjacent second gap holding member 42 and one first gap holding member 41 and the distance between the adjacent second gap holding member 42 and the other first gap holding member 41 are equal. That is, the second interval holding member 42 is installed at an intermediate position between the two first interval holding members 41 in the orthogonal direction. The second spacing member 42 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end of the second spacing member 42 is located downstream of the windward end of the first spacing member 41. A second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41 on the upstream side of the third gap holding member 43. The second width air passage 10 will be described in detail later.
　第３間隔保持部材４３は、第３幅風路１１の風路幅Ｘ３を規定する部材である。２本の第３間隔保持部材４３は、直交方向に沿って互いに間隔を空けて設置されている。第３間隔保持部材４３は、隣り合う第１間隔保持部材４１と第２間隔保持部材４２との間に１本ずつ設置されている。第３間隔保持部材４３は、仕切部材３の風下側端部３１から上流側に向かって延びている。第３間隔保持部材４３の風上側端部は、第１間隔保持部材４１の風上側端部および第２間隔保持部材４２の風上側端部よりも下流側に位置している。隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間隔および隣り合う第３間隔保持部材４３と第２間隔保持部材４２との間隔は、等しい。隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間のうち第４間隔保持部材４４よりも上流側には、第３幅風路１１が形成されている。また、隣り合う第３間隔保持部材４３と第２間隔保持部材４２との間のうち第４間隔保持部材４４よりも上流側には、第３幅風路１１が形成されている。第３幅風路１１については後に詳しく説明する。 The third interval holding member 43 is a member that defines the air passage width X3 of the third width air passage 11. The two third spacing members 43 are installed so as to be spaced apart from each other along the orthogonal direction. The third interval holding member 43 is installed one by one between the adjacent first interval holding member 41 and the second interval holding member 42. The third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end of the third spacing member 43 is located downstream of the windward end of the first spacing member 41 and the windward end of the second spacing member 42. The distance between the adjacent third gap holding member 43 and the first gap holding member 41 and the distance between the adjacent third gap holding member 43 and the second gap holding member 42 are equal. A third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41 on the upstream side of the fourth interval holding member 44. Further, a third width air passage 11 is formed between the adjacent third gap holding member 43 and the second gap holding member 42 on the upstream side of the fourth gap holding member 44. The third width air passage 11 will be described in detail later.
　第４間隔保持部材４４は、第４幅風路１２の風路幅Ｘ４を規定する部材である。４本の第４間隔保持部材４４は、直交方向に沿って互いに間隔を空けて設置されている。第４間隔保持部材４４は、隣り合う第１間隔保持部材４１と第３間隔保持部材４３との間、および、隣り合う第２間隔保持部材４２と第３間隔保持部材４３との間に１本ずつ設置されている。第４間隔保持部材４４は、仕切部材３の風下側端部３１から上流側に向かって延びている。第４間隔保持部材４４の風上側端部は、第１間隔保持部材４１の風上側端部、第２間隔保持部材４２の風上側端部および第３間隔保持部材４３の風上側端部よりも下流側に位置している。隣り合う第４間隔保持部材４４と第１間隔保持部材４１との間隔、隣り合う第４間隔保持部材４４と第２間隔保持部材４２との間隔、および、隣り合う第４間隔保持部材４４と第３間隔保持部材４３との間隔は、等しい。隣り合う第４間隔保持部材４４と第１間隔保持部材４１との間には、第４幅風路１２が形成されている。また、隣り合う第４間隔保持部材４４と第２間隔保持部材４２との間には、第４幅風路１２が形成されている。また、隣り合う第４間隔保持部材４４と第３間隔保持部材４３との間には、第４幅風路１２が形成されている。第４幅風路１２については後に詳しく説明する。 The fourth interval holding member 44 is a member that defines the air passage width X4 of the fourth width air passage 12. The four fourth spacing members 44 are installed at intervals along the orthogonal direction. One fourth space holding member 44 is provided between the adjacent first space holding member 41 and the third space holding member 43, and between the adjacent second space holding member 42 and the third space holding member 43. They are installed one by one. The fourth interval holding member 44 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end of the fourth spacing member 44 is closer to the windward end of the first spacing member 41, the windward end of the second spacing member 42, and the windward end of the third spacing member 43. It is located on the downstream side. The distance between the adjacent fourth gap holding member 44 and the first gap holding member 41, the distance between the adjacent fourth gap holding member 44 and the second gap holding member 42, and the adjacent fourth gap holding member 44 and the first The distance from the three-space holding member 43 is the same. A fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the first interval holding member 41. Further, a fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the second interval holding member 42. Further, a fourth width air passage 12 is formed between the adjacent fourth interval holding member 44 and the third interval holding member 43. The fourth width air passage 12 will be described in detail later.
　次に、第１幅風路９、第２幅風路１０、第３幅風路１１および第４幅風路１２について説明する。なお、第１風路５と第２風路６とは空気流の流れ方向が異なるだけでその他の構成は同一であるため、ここでは第１風路５を例にとって説明し、第２風路６の説明は省略する。第１風路５の風路幅は、空気流れ方向に沿った下流側に向かうほど段階的に狭まる。第１風路５は、流入口２２から空気流れ方向に沿った下流側に向けて延びる第１幅風路９と、第１幅風路９の下流側で第１幅風路９を２つ以上に分岐させて形成された２つ以上の第２幅風路１０とを有する。また、第１風路５は、第２幅風路１０の下流側で第２幅風路１０を２つ以上に分岐させて形成された２つ以上の第３幅風路１１と、第３幅風路１１の下流側で第３幅風路１１を２つ以上に分岐させて形成された２つ以上の第４幅風路１２とを有する。本実施の形態では、１つの第１幅風路９と、２つの第２幅風路１０と、４つの第３幅風路１１と、８つの第４幅風路１２を設ける場合を例示するが、各幅風路９，１０，１１，１２の数を限定する趣旨ではない。 Next, the first width air passage 9, the second width air passage 10, the third width air passage 11, and the fourth width air passage 12 will be described. Since the first air passage 5 and the second air passage 6 differ only in the flow direction of the air flow and have the same other configurations, the first air passage 5 will be described as an example here, and the second air passage will be described. The description of 6 will be omitted. The width of the first air passage 5 gradually narrows toward the downstream side along the air flow direction. The first air passage 5 includes a first width air passage 9 extending from the inflow port 22 toward the downstream side along the air flow direction, and two first width air passages 9 on the downstream side of the first width air passage 9. It has two or more second width air passages 10 formed by being branched as described above. Further, the first air passage 5 includes two or more third width air passages 11 formed by branching the second width air passage 10 into two or more on the downstream side of the second width air passage 10, and a third air passage 5. It has two or more fourth width air passages 12 formed by branching the third width air passage 11 into two or more on the downstream side of the width air passage 11. In the present embodiment, a case where one first width air passage 9, two second width air passages 10, four third width air passages 11, and eight fourth width air passages 12 are provided is illustrated. However, it is not intended to limit the number of each width air passage 9, 10, 11, 12.
　第１幅風路９の風路幅Ｘ１は、第１風路５の中で最も広い。第１幅風路９は、空気流れ方向に沿って第１風路長さＹ１で延びている。 The air passage width X1 of the first width air passage 9 is the widest in the first air passage 5. The first width air passage 9 extends along the air flow direction with a first air passage length Y1.
　第２幅風路１０の風路幅Ｘ２は、第１幅風路９の風路幅Ｘ１よりも狭い。第２幅風路１０は、空気流れ方向に沿って第２風路長さＹ２で延びている。 The air passage width X2 of the second width air passage 10 is narrower than the air passage width X1 of the first width air passage 9. The second width air passage 10 extends along the air flow direction with a second air passage length Y2.
　第３幅風路１１の風路幅Ｘ３は、第１幅風路９の風路幅Ｘ１および第２幅風路１０の風路幅Ｘ２よりも狭い。第３幅風路１１は、空気流れ方向に沿って第３風路長さＹ３で延びている。 The air passage width X3 of the third width air passage 11 is narrower than the air passage width X1 of the first width air passage 9 and the air passage width X2 of the second width air passage 10. The third width air passage 11 extends along the air flow direction with a third air passage length Y3.
　第４幅風路１２の風路幅Ｘ４は、第１風路５の中で最も狭い。第４幅風路１２は、空気流れ方向に沿って第４風路長さＹ４で延びている。第１風路５の風路高さＺ２は、空気流れ方向の全長に亘って一定である。つまり、第１幅風路９、第２幅風路１０、第３幅風路１１および第４幅風路１２の高さは、同一である。 The air passage width X4 of the fourth width air passage 12 is the narrowest in the first air passage 5. The fourth width air passage 12 extends along the air flow direction with a fourth air passage length Y4. The air passage height Z2 of the first air passage 5 is constant over the entire length in the air flow direction. That is, the heights of the first width air passage 9, the second width air passage 10, the third width air passage 11, and the fourth width air passage 12 are the same.
　本実施の形態にかかる第１風路５および第２風路６の断面形状は、実施の形態１にかかる第１風路５および第２風路６の断面形状と異なる。そのため、等価直径とそれに伴って変化する助走区間の長さについて検討する必要が生じるが、基本的な考え方は実施の形態１で述べた内容と同様である。すなわち、実施の形態２にかかる第１風路５および第２風路６についても、等価直径およびレイノルズ数を計算することで助走区間の長さを求めることができる。第１風路５および第２風路６の断面形状は台形または概ね三角形に近似するものとみなせばよい。風路断面積、濡れぶち長さについては、本実施の形態の第１風路５の断面形状が一般的な幾何形状であるため、その説明を省略する。 The cross-sectional shapes of the first air passage 5 and the second air passage 6 according to the present embodiment are different from the cross-sectional shapes of the first air passage 5 and the second air passage 6 according to the first embodiment. Therefore, it is necessary to examine the equivalent diameter and the length of the approach section that changes accordingly, but the basic idea is the same as that described in the first embodiment. That is, also for the first air passage 5 and the second air passage 6 according to the second embodiment, the length of the approach section can be obtained by calculating the equivalent diameter and the Reynolds number. The cross-sectional shapes of the first air passage 5 and the second air passage 6 may be regarded as being similar to a trapezoid or a substantially triangular shape. Since the cross-sectional shape of the first air passage 5 of the present embodiment is a general geometric shape, the description of the air passage cross-sectional area and the wet edge length will be omitted.
　コルゲート形状の間隔保持部材４を使用する場合には、長さの異なる第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４を成形または紙折りによって個別に製造して、製造した間隔保持部材４のそれぞれを仕切部材３に接合することができる。また、１本の長いコルゲート形状部材を用意し、第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４の長さに切断して、切断した間隔保持部材４のそれぞれを仕切部材３に接合することもできる。 When the corrugated space holding member 4 is used, the first space holding member 41, the second space holding member 42, the third space holding member 43, and the fourth space holding member 44 having different lengths are formed or folded. Each of the manufactured interval holding members 4 can be joined to the partition member 3. Further, one long corrugated member was prepared and cut to the lengths of the first interval holding member 41, the second interval holding member 42, the third interval holding member 43, and the fourth interval holding member 44. Each of the interval holding members 4 can also be joined to the partition member 3.
　また、図３に示す風路幅Ｘ１、風路幅Ｘ２、風路幅Ｘ３、風路幅Ｘ４、第１風路長さＹ１、第２風路長さＹ２、第３風路長さＹ３、第４風路長さＹ４、風路高さＺ２の寸法関係になるように真空成形またはプレス成形で１度に第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４を製造することもできる。また、押出成形で第１間隔保持部材４１以上の長さのコルゲート形状部材を用意し、コルゲート形状部材を切断することで第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４を製造することもできる。 Further, the air passage width X1, the air passage width X2, the air passage width X3, the air passage width X4, the first air passage length Y1, the second air passage length Y2, and the third air passage length Y3 shown in FIG. The first interval holding member 41, the second interval holding member 42, the third interval holding member 43 and the first interval holding member 41 and the third interval holding member 43 at a time by vacuum forming or press forming so as to have a dimensional relationship of the fourth air passage length Y4 and the air passage height Z2. The fourth interval holding member 44 can also be manufactured. Further, a corrugated member having a length of 41 or more is prepared by extrusion molding, and by cutting the corrugated member, the first interval holding member 41, the second interval holding member 42, and the third interval holding member 42 are prepared. 43 and the fourth spacing member 44 can also be manufactured.
　また、紙コルゲートの技術を用いる場合には、周期的に穴の開いた紙を芯製造機に通して第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４を製造することもできる。また、従来の段ボール製造技術を用いる場合には、コルゲート形状の段ボールを切断することで第１間隔保持部材４１、第２間隔保持部材４２、第３間隔保持部材４３および第４間隔保持部材４４を製造することもできる。 Further, when the paper corrugated technique is used, the paper having holes periodically is passed through the core making machine to pass the first interval holding member 41, the second interval holding member 42, the third interval holding member 43 and the fourth. The interval holding member 44 can also be manufactured. Further, when the conventional corrugated cardboard manufacturing technique is used, the first interval holding member 41, the second interval holding member 42, the third interval holding member 43, and the fourth interval holding member 44 are formed by cutting the corrugated cardboard. It can also be manufactured.
　コルゲート形状の間隔保持部材４を用いると、間隔保持部材４の内部も中空の風路となるため、熱交換素子１の圧力損失を低減させることができる。また、コルゲート製造の生産性を生かして連続生産を行うことができる。これにより、圧力損失が低減するとともに生産性の高い熱交換素子１を得ることができる。 When the corrugated space holding member 4 is used, the inside of the space holding member 4 also becomes a hollow air passage, so that the pressure loss of the heat exchange element 1 can be reduced. In addition, continuous production can be performed by taking advantage of the productivity of corrugated production. As a result, the pressure loss can be reduced and the heat exchange element 1 with high productivity can be obtained.
実施の形態３．
　図４は、本発明の実施の形態３にかかる熱交換素子１の伝熱ユニット２の斜視図である。なお、実施の形態３では、前記した実施の形態１と重複する部分については、同一符号を付して説明を省略する。 Embodiment 3.
FIG. 4 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the third embodiment of the present invention. In the third embodiment, the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
　本実施の形態では、第２間隔保持部材４２を第３間隔保持部材４３と空気流れ方向に沿った上流側にオフセット配置した点が前記した実施の形態１と異なる。本実施の形態では、２本の第１間隔保持部材４１、３本の第２間隔保持部材４２、６本の第３間隔保持部材４３を設置する場合を例示する。本実施の形態では第３間隔保持部材４３が第２間隔保持部材４２より長いが、両者の長さを同等にしてもよいし、第２間隔保持部材４２を第３間隔保持部材４３より長くしてもよい。 The present embodiment is different from the first embodiment in that the second interval holding member 42 is offset from the third interval holding member 43 on the upstream side along the air flow direction. In this embodiment, a case where two first interval holding members 41, three second interval holding members 42, and six third interval holding members 43 are installed will be illustrated. In the present embodiment, the third interval holding member 43 is longer than the second interval holding member 42, but the lengths of both may be the same, or the second interval holding member 42 may be longer than the third interval holding member 43. You may.
　第３間隔保持部材４３は、２本の第１間隔保持部材４１の間に設置されている。６本の第３間隔保持部材４３は、直交方向に沿って互いに間隔を空けて設置されている。第３間隔保持部材４３は、仕切部材３の風下側端部３１から上流側に向かって延びている。第３間隔保持部材４３の風上側端面４３ａは、第１間隔保持部材４１の風上側端面４１ａおよび第２間隔保持部材４２の風上側端面４２ａよりも下流側に位置している。隣り合う第３間隔保持部材４３の間隔は、等しい。隣り合う第３間隔保持部材４３の間隔は、隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間隔よりも広い。 The third interval holding member 43 is installed between the two first interval holding members 41. The six third spacing members 43 are installed at intervals along the orthogonal direction. The third interval holding member 43 extends from the leeward end 31 of the partition member 3 toward the upstream side. The windward end surface 43a of the third spacing member 43 is located downstream of the windward end surface 41a of the first spacing member 41 and the windward end surface 42a of the second spacing member 42. The spacing between adjacent third spacing members 43 is equal. The distance between the adjacent third gap holding members 43 is wider than the distance between the adjacent third gap holding member 43 and the first gap holding member 41.
　隣り合う第３間隔保持部材４３の間には、第３幅風路１１が形成されている。以下、隣り合う第３間隔保持部材４３の間に形成される第３幅風路１１を「第３メイン幅風路１１ａ」と称する。隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間には、第３幅風路１１が形成されている。以下、隣り合う第３間隔保持部材４３と第１間隔保持部材４１との間に形成される第３幅風路１１を「第３サブ幅風路１１ｂ」と称する。第３サブ幅風路１１ｂの風路幅Ｘ３２は、本実施の形態では第３メイン幅風路１１ａの風路幅Ｘ３１の半分の大きさに形成されている。第３メイン幅風路１１ａの風路幅Ｘ３１および第３サブ幅風路１１ｂの風路幅Ｘ３２は、第１幅風路９の風路幅Ｘ１よりも狭い。本実施の形態では、５つの第３メイン幅風路１１ａと、２つの第３サブ幅風路１１ｂとを設ける場合を例示するが、第３メイン幅風路１１ａと第３サブ幅風路１１ｂの数を限定する趣旨ではない。 A third width air passage 11 is formed between adjacent third interval holding members 43. Hereinafter, the third width air passage 11 formed between the adjacent third interval holding members 43 will be referred to as a “third main width air passage 11a”. A third width air passage 11 is formed between the adjacent third interval holding member 43 and the first interval holding member 41. Hereinafter, the third width air passage 11 formed between the adjacent third interval holding member 43 and the first interval holding member 41 will be referred to as a "third sub-width air passage 11b". The air passage width X32 of the third sub-width air passage 11b is formed to be half the size of the air passage width X31 of the third main width air passage 11a in the present embodiment. The air passage width X31 of the third main width air passage 11a and the air passage width X32 of the third sub width air passage 11b are narrower than the air passage width X1 of the first width air passage 9. In the present embodiment, a case where five third main width air passages 11a and two third sub width air passages 11b are provided is illustrated, but the third main width air passage 11a and the third sub width air passage 11b are illustrated. It is not intended to limit the number of.
　第２間隔保持部材４２は、２本の第１間隔保持部材４１の間に設置されている。３本の第２間隔保持部材４２は、直交方向に沿って互いに間隔を空けて設置されている。第２間隔保持部材４２は、第３間隔保持部材４３と空気流れ方向に沿った上流側にオフセット配置されている。第２間隔保持部材４２は、第３メイン幅風路１１ａの上流側に配置されている。第２間隔保持部材４２は、５つの第３メイン幅風路１１ａに対して１つおきに設置されている。隣り合う第２間隔保持部材４２の間隔は、等しい。隣り合う第２間隔保持部材４２の間隔は、隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間隔よりも広い。 The second interval holding member 42 is installed between the two first interval holding members 41. The three second spacing members 42 are installed at intervals along the orthogonal direction. The second interval holding member 42 is offset from the third interval holding member 43 on the upstream side along the air flow direction. The second interval holding member 42 is arranged on the upstream side of the third main width air passage 11a. The second spacing member 42 is installed every other time with respect to the five third main width air passages 11a. The distances between the adjacent second gap holding members 42 are equal. The distance between the adjacent second gap holding members 42 is wider than the distance between the adjacent second gap holding member 42 and the first gap holding member 41.
　隣り合う第２間隔保持部材４２の間には、第２幅風路１０が形成されている。以下、隣り合う第２間隔保持部材４２の間に形成される第２幅風路１０を「第２メイン幅風路１０ａ」と称する。隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間には、第２幅風路１０が形成されている。以下、隣り合う第２間隔保持部材４２と第１間隔保持部材４１との間に形成される第２幅風路１０を「第２サブ幅風路１０ｂ」と称する。第２サブ幅風路１０ｂの風路幅Ｘ２２は、本実施の形態では第２メイン幅風路１０ａの風路幅Ｘ２１の半分の大きさに形成されている。本実施の形態では、２つの第２メイン幅風路１０ａと、２つの第２サブ幅風路１０ｂとを設ける場合を例示するが、第２メイン幅風路１０ａと第２サブ幅風路１０ｂの数を限定する趣旨ではない。第２メイン幅風路１０ａの風路幅Ｘ２１および第２サブ幅風路１０ｂの風路幅Ｘ２２は、第１幅風路９の風路幅Ｘ１よりも狭い。第２メイン幅風路１０ａの風路幅Ｘ２１および第２サブ幅風路１０ｂの風路幅Ｘ２２は、第３メイン幅風路１１ａの風路幅Ｘ３１および第３サブ幅風路１１ｂの風路幅Ｘ３２よりも広い。 A second width air passage 10 is formed between the adjacent second gap holding members 42. Hereinafter, the second width air passage 10 formed between the adjacent second gap holding members 42 will be referred to as a “second main width air passage 10a”. A second width air passage 10 is formed between the adjacent second gap holding member 42 and the first gap holding member 41. Hereinafter, the second width air passage 10 formed between the adjacent second interval holding member 42 and the first interval holding member 41 will be referred to as a “second sub-width air passage 10b”. In the present embodiment, the air passage width X22 of the second sub-width air passage 10b is formed to be half the size of the air passage width X21 of the second main width air passage 10a. In the present embodiment, a case where two second main width air passages 10a and two second sub width air passages 10b are provided is illustrated, but the second main width air passage 10a and the second sub width air passage 10b are illustrated. It is not intended to limit the number of. The air passage width X21 of the second main width air passage 10a and the air passage width X22 of the second sub width air passage 10b are narrower than the air passage width X1 of the first width air passage 9. The air passage width X21 of the second main width air passage 10a and the air passage width X22 of the second sub width air passage 10b are the air passages of the air passage width X31 of the third main width air passage 11a and the air passage 11b of the third sub width air passage 11b. Wider than width X32.
　本実施の形態では、第２間隔保持部材４２と第３間隔保持部材４３とを空気の流れ方向でオフセット配置することで、第３間隔保持部材４３の風上側端面４３ａに空気流が当たりやすくなる。第３間隔保持部材４３の風上側端面４３ａに当たった空気流は分流するため、第１風路５および第２風路６における空気流の乱れを助長させることができる。これにより、第１風路５および第２風路６の内壁面に対する熱伝達率および物質伝達率を高めて、熱交換素子１の全熱交換効率を向上させることができる。 In the present embodiment, by arranging the second interval holding member 42 and the third interval holding member 43 at offset in the air flow direction, the air flow can easily hit the windward end surface 43a of the third interval holding member 43. .. Since the air flow that hits the windward end surface 43a of the third interval holding member 43 is divided, it is possible to promote the turbulence of the air flow in the first air passage 5 and the second air passage 6. As a result, the heat transfer coefficient and the substance transfer coefficient to the inner wall surfaces of the first air passage 5 and the second air passage 6 can be increased, and the total heat exchange efficiency of the heat exchange element 1 can be improved.
　なお、第２メイン幅風路１０ａの風路幅Ｘ２１と第２サブ幅風路１０ｂの風路幅Ｘ２２との比率、および、第３メイン幅風路１１ａの風路幅Ｘ３１と第３サブ幅風路１１ｂの風路幅Ｘ３２との比率は、適宜変更してよい。例えば、圧力損失の増加を抑制したい場合には、第２サブ幅風路１０ｂの風路幅Ｘ２２を第２メイン幅風路１０ａの風路幅Ｘ２１の１．５倍の大きさにして、第３サブ幅風路１１ｂの風路幅Ｘ３２を第３メイン幅風路１１ａの風路幅Ｘ３１の１．５倍の大きさにしてもよい。 The ratio of the air passage width X21 of the second main width air passage 10a to the air passage width X22 of the second sub width air passage 10b, and the air passage width X31 and the third sub width of the third main width air passage 11a. The ratio of the air passage 11b to the air passage width X32 may be appropriately changed. For example, when it is desired to suppress an increase in pressure loss, the air passage width X22 of the second sub-width air passage 10b is set to 1.5 times the air passage width X21 of the second main width air passage 10a. The air passage width X32 of the three sub-width air passages 11b may be 1.5 times as large as the air passage width X31 of the third main width air passage 11a.
実施の形態４．
　図５は、本発明の実施の形態４にかかる熱交換素子１の伝熱ユニット２の斜視図である。なお、実施の形態４では、前記した実施の形態１と重複する部分については、同一符号を付して説明を省略する。 Embodiment 4.
FIG. 5 is a perspective view of the heat transfer unit 2 of the heat exchange element 1 according to the fourth embodiment of the present invention. In the fourth embodiment, the parts that overlap with the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
　実施の形態４にかかる熱交換素子１では、実施の形態１にかかる伝熱ユニット２が同一平面上に複数並べて設置されている。図示は省略するが、同一平面上に複数並べられた第１伝熱ユニット２ａと第２伝熱ユニット２ｂとが交互に積み重ねられて熱交換素子１が形成される。伝熱ユニット２は、本実施の形態では空気流の流れ方向および空気流の流れ方向と直交する方向に沿って２枚ずつ並べて設けられている。なお、実施の形態２，３にかかる伝熱ユニット２が、空気流の流れ方向および空気流の流れ方向と直交する方向に沿って複数並べて設けられてもよい。 In the heat exchange element 1 according to the fourth embodiment, a plurality of heat transfer units 2 according to the first embodiment are installed side by side on the same plane. Although not shown, a plurality of first heat transfer units 2a and second heat transfer units 2b arranged on the same plane are alternately stacked to form a heat exchange element 1. In the present embodiment, two heat transfer units 2 are provided side by side along the flow direction of the air flow and the direction orthogonal to the flow direction of the air flow. A plurality of heat transfer units 2 according to the second and third embodiments may be provided side by side along the flow direction of the air flow and the direction orthogonal to the flow direction of the air flow.
　伝熱ユニット２は、第１風路５および第２風路６の流入口２２が大きな開口幅を持つため、熱交換素子１の角寸サイズが大きくなるほど、伝熱ユニット２のうち流入口２２周りの強度を保つ工夫が必要になる。また、第１風路５および第２風路６の風路幅が空気流れ方向に沿った下流側に向かうほど狭くなるため、圧力損失の増加を抑制する必要がある。そこで、本実施の形態では、実施の形態１にかかる伝熱ユニット２を１単位として、空気流れ方向および直交方向に沿って直列に複数単位の伝熱ユニット２を設けた。複数の伝熱ユニット２が直交方向で並んでいることで、伝熱ユニット２のうち流入口２２周りのたわみを抑制することができる。また、複数の伝熱ユニット２が空気流れ方向で並んでいることで、１つの伝熱ユニット２を通過した空気流は下流側に位置する伝熱ユニット２の第１幅風路９に導かれて第２幅風路１０、第３幅風路１１の順に流れる。つまり、空気流は、１つの伝熱ユニット２の風路幅が広い風路と狭い風路とを通過した後に、次の伝熱ユニット２の風路幅が広い風路と狭い風路とを通過することになる。本実施の形態では風路幅が広い風路と狭い風路とを交互に空気流が通過するため、空気流れ方向に１つの伝熱ユニット２のみを設ける場合と比べて、風路幅の狭小化による圧力損失の増加を抑制することができる。 In the heat transfer unit 2, since the inlets 22 of the first air passage 5 and the second air passage 6 have a large opening width, the larger the square size of the heat exchange element 1, the larger the inlet 22 of the heat transfer units 2. It is necessary to devise ways to maintain the strength of the surroundings. Further, since the air passage widths of the first air passage 5 and the second air passage 6 become narrower toward the downstream side along the air flow direction, it is necessary to suppress an increase in pressure loss. Therefore, in the present embodiment, the heat transfer unit 2 according to the first embodiment is set as one unit, and a plurality of units of the heat transfer unit 2 are provided in series along the air flow direction and the orthogonal direction. By arranging the plurality of heat transfer units 2 in the orthogonal direction, it is possible to suppress the deflection of the heat transfer units 2 around the inflow port 22. Further, since the plurality of heat transfer units 2 are arranged in the air flow direction, the air flow passing through one heat transfer unit 2 is guided to the first width air passage 9 of the heat transfer unit 2 located on the downstream side. The second width air passage 10 and the third width air passage 11 flow in this order. That is, the air flow passes through the wide air passage and the narrow air passage of one heat transfer unit 2, and then passes through the wide air passage and the narrow air passage of the next heat transfer unit 2. It will pass. In the present embodiment, since the air flow alternately passes through the air passage having a wide air passage width and the air passage having a narrow air passage width, the air passage width is narrower than that in the case where only one heat transfer unit 2 is provided in the air flow direction. It is possible to suppress an increase in pressure loss due to conversion.
実施の形態５．
　次に、熱交換素子１を備える熱交換換気装置１００について説明する。図６は、本発明の実施の形態５にかかる熱交換換気装置１００を示す模式図である。なお、実施の形態５では、前記した実施の形態１と重複する部分については、同一符号を付して説明を省略する。 Embodiment 5.
Next, the heat exchange ventilation device 100 including the heat exchange element 1 will be described. FIG. 6 is a schematic view showing the heat exchange ventilation device 100 according to the fifth embodiment of the present invention. In the fifth embodiment, the same reference numerals are given to the parts overlapping with the first embodiment, and the description thereof will be omitted.
　熱交換換気装置１００は、給気送風機１４と、排気送風機１５と、熱交換素子１と、ケーシング１３とを備える。なお、図６では、ケーシング１３の内部を上から見た状態を模式的に表している。 The heat exchange ventilation device 100 includes an air supply blower 14, an exhaust blower 15, a heat exchange element 1, and a casing 13. Note that FIG. 6 schematically shows a state in which the inside of the casing 13 is viewed from above.
　ケーシング１３は、給気送風機１４、排気送風機１５および熱交換素子１を収容する箱状の部材である。ケーシング１３の内部には、第１空気流７が通過する給気風路１６と、第２空気流８が通過する排気風路１７とが設けられている。第１空気流７は、室外から室内への給気流である。第２空気流８は、室内から室外への排気流である。ケーシング１３のうち室内側の側面には、給気吹出口２０と排気吸込口１９とが設けられている。ケーシング１３のうち室外側の側面には、給気吸込口１８と排気吹出口２１とが設けられている。 The casing 13 is a box-shaped member that houses the air supply blower 14, the exhaust blower 15, and the heat exchange element 1. Inside the casing 13, an air supply air passage 16 through which the first air flow 7 passes and an exhaust air passage 17 through which the second air flow 8 passes are provided. The first air flow 7 is an air supply from the outside to the inside of the room. The second air flow 8 is an exhaust flow from the room to the outside. A supply air outlet 20 and an exhaust suction port 19 are provided on the side surface of the casing 13 on the indoor side. A supply air suction port 18 and an exhaust air outlet 21 are provided on the outdoor side surface of the casing 13.
　給気送風機１４は、給気風路１６内に配置されている。給気送風機１４は、室外の空気を給気吸込口１８から給気風路１６へ取り込んで第１空気流７を発生させる。第１空気流７は、給気風路１６を流れて、給気吹出口２０から室内へ向けて吹き出される。給気送風機１４は、室外から室内に向けた第１空気流７を図１に示す第１風路５に送る。 The air supply blower 14 is arranged in the air supply air passage 16. The air supply blower 14 takes in outdoor air from the air supply suction port 18 into the air supply air passage 16 to generate a first air flow 7. The first air flow 7 flows through the air supply air passage 16 and is blown out from the air supply outlet 20 toward the room. The air supply blower 14 sends the first air flow 7 from the outside to the inside to the first air passage 5 shown in FIG.
　排気送風機１５は、排気風路１７内に配置されている。排気送風機１５は、室内の空気を排気吸込口１９から排気風路１７へ取り込んで第２空気流８を発生させる。第２空気流８は、排気風路１７を流れて、排気吹出口２１から室外へ向けて吹き出される。排気送風機１５は、室内から室外に向けた第２空気流８を図１に示す第２風路６に送る。 The exhaust blower 15 is arranged in the exhaust air passage 17. The exhaust blower 15 takes in indoor air from the exhaust suction port 19 into the exhaust air passage 17 to generate a second air flow 8. The second air flow 8 flows through the exhaust air passage 17 and is blown out from the exhaust outlet 21 toward the outside. The exhaust blower 15 sends the second air flow 8 from the room to the outside to the second air passage 6 shown in FIG.
　熱交換素子１には、上記実施の形態１から４にかかる熱交換素子１のうちいずれか１つが用いられる。熱交換素子１は、給気風路１６と排気風路１７とが交差する位置に設けられている。熱交換素子１は、給気風路１６を流れる第１空気流７と排気風路１７を流れる第２空気流８との全熱交換を行う。熱交換換気装置１００は、熱交換素子１での全熱交換により、室内からの排気流の顕熱と潜熱とを回収して、回収された顕熱と潜熱とを給気流へ伝達させる。また、熱交換換気装置１００は、熱交換素子１での全熱交換により、室外からの給気流の顕熱と潜熱とを回収して、回収された顕熱と潜熱とを排気流へ伝達させる。熱交換換気装置１００は、室内の冷暖房の効率と除加湿の効率とを向上させ、室内の空調に使用されるエネルギーを低減させることができる。なお、熱交換素子１は、排気流と空気流との間で顕熱のみを伝達させる構成にしてもよい。 As the heat exchange element 1, any one of the heat exchange elements 1 according to the above embodiments 1 to 4 is used. The heat exchange element 1 is provided at a position where the air supply air passage 16 and the exhaust air passage 17 intersect. The heat exchange element 1 performs total heat exchange between the first air flow 7 flowing through the supply air passage 16 and the second air flow 8 flowing through the exhaust air passage 17. The heat exchange ventilation device 100 recovers the sensible heat and latent heat of the exhaust flow from the room by total heat exchange in the heat exchange element 1, and transfers the recovered sensible heat and latent heat to the air supply airflow. Further, the heat exchange ventilation device 100 recovers the sensible heat and the latent heat of the air supply from the outdoor by exchanging the total heat with the heat exchange element 1, and transfers the recovered sensible heat and the latent heat to the exhaust flow. .. The heat exchange ventilation device 100 can improve the efficiency of heating and cooling in the room and the efficiency of dehumidification and dehumidification, and can reduce the energy used for air conditioning in the room. The heat exchange element 1 may be configured to transmit only sensible heat between the exhaust flow and the air flow.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　熱交換素子、２　伝熱ユニット、２ａ　第１伝熱ユニット、２ｂ　第２伝熱ユニット、３　仕切部材、４　間隔保持部材、５　第１風路、６　第２風路、７　第１空気流、８　第２空気流、９　第１幅風路、１０　第２幅風路、１０ａ　第２メイン幅風路、１０ｂ　第２サブ幅風路、１１　第３幅風路、１１ａ　第３メイン幅風路、１１ｂ　第３サブ幅風路、１２　第４幅風路、１３　ケーシング、１４　給気送風機、１５　排気送風機、１６　給気風路、１７　排気風路、１８　給気吸込口、１９　排気吸込口、２０　給気吹出口、２１　排気吹出口、２２　流入口、３１　風下側端部、４１　第１間隔保持部材、４１ａ，４２ａ，４３ａ　風上側端面、４２　第２間隔保持部材、４３　第３間隔保持部材、４４　第４間隔保持部材、１００　熱交換換気装置。 1 heat exchange element, 2 heat transfer unit, 2a 1st heat transfer unit, 2b 2nd heat transfer unit, 3 partition member, 4 spacing member, 5 1st air passage, 6 2nd air passage, 7 1st air flow , 8 2nd airflow, 9 1st width air passage, 10 2nd width air passage, 10a 2nd main width air passage, 10b 2nd sub width air passage, 11 3rd width air passage, 11a 3rd main width air passage. Road, 11b 3rd sub-width air passage, 12 4th width air passage, 13 casing, 14 air supply air blower, 15 exhaust air blower, 16 air supply air passage, 17 exhaust air passage, 18 air supply air inlet, 19 exhaust air inlet, 20 air supply air outlet, 21 exhaust air outlet, 22 air inlet, 31 leeward end, 41 first interval holding member, 41a, 42a, 43a wind upper end face, 42 second interval holding member, 43 third interval holding member , 44 4th interval holding member, 100 heat exchange ventilation device.

Claims (8)

  1. 　第１風路を形成する第１伝熱ユニットと、
    　第２風路を形成する第２伝熱ユニットと、を備え、
    　前記第１風路および前記第２風路は、空気流の流入口から前記空気流の流れ方向に沿った下流側に向けて延びる第１幅風路と、前記第１幅風路の下流側で前記第１幅風路を２つ以上に分岐させて形成された２つ以上の第２幅風路と、を有し、
    　前記第２幅風路の風路幅は、前記第１幅風路の風路幅よりも狭いことを特徴とする熱交換素子。     The first heat transfer unit that forms the first air passage,
    It is equipped with a second heat transfer unit that forms a second air passage.
    The first air passage and the second air passage are a first width air passage extending from an air flow inlet toward a downstream side along the flow direction of the air flow, and a downstream side of the first width air passage. It has two or more second width air passages formed by branching the first width air passage into two or more.
    A heat exchange element characterized in that the air passage width of the second width air passage is narrower than the air passage width of the first width air passage.
  2. 　前記空気流の流れ方向に沿った前記第１幅風路の長さは、前記第１幅風路の助走区間の長さ以下であり、
    　前記空気流の流れ方向に沿った前記第２幅風路の長さは、前記第２幅風路の助走区間の長さ以下であることを特徴とする請求項１に記載の熱交換素子。     The length of the first width air passage along the flow direction of the air flow is equal to or less than the length of the approach section of the first width air passage.
    The heat exchange element according to claim 1, wherein the length of the second width air passage along the flow direction of the air flow is equal to or less than the length of the approach section of the second width air passage.
  3. 　前記第１風路および前記第２風路は、前記第２幅風路の下流側で前記第２幅風路を２つ以上に分岐させて形成された２つ以上の第３幅風路をさらに有し、
    　前記第３幅風路の風路幅は、前記第２幅風路の風路幅よりも狭いことを特徴とする請求項２に記載の熱交換素子。     The first air passage and the second air passage are two or more third width air passages formed by branching the second width air passage into two or more on the downstream side of the second width air passage. Have more
    The heat exchange element according to claim 2, wherein the air passage width of the third width air passage is narrower than the air passage width of the second width air passage.
  4. 　前記空気流の流れ方向に沿った前記第３幅風路の長さは、前記第３幅風路の助走区間の長さ以下であることを特徴とする請求項３に記載の熱交換素子。 The heat exchange element according to claim 3, wherein the length of the third width air passage along the flow direction of the air flow is equal to or less than the length of the approach section of the third width air passage.
  5. 　前記助走区間の長さＬＬは、レイノルズ数をＲｅ、前記第１風路または前記第２風路の等価直径をｄｅとしたときに、ＬＬ＝０．０５６×Ｒｅ×ｄｅの式で表されることを特徴とする請求項４に記載の熱交換素子。 The length LL of the approach section is expressed by the equation of LL = 0.056 × Re × de, where Reynolds number is Re and the equivalent diameter of the first air passage or the second air passage is de. The heat exchange element according to claim 4, wherein the heat exchange element is characterized in that.
  6. 　前記第１伝熱ユニットと前記第２伝熱ユニットは、交互に積み重ねられ、
    　前記第１伝熱ユニットおよび前記第２伝熱ユニットは、仕切部材と、前記仕切部材の上に設置されて隣り合う前記仕切部材の間に前記第１風路または前記第２風路を形成する複数の間隔保持部材と、を備え、
    　前記間隔保持部材は、前記第１幅風路の風路幅を規定する２本の第１間隔保持部材と、前記第１間隔保持部材の間に設置されて前記第２幅風路の風路幅を規定する第２間隔保持部材と、前記第１間隔保持部材の間に設置されて前記第３幅風路の風路幅を規定する第３間隔保持部材と、を有し、
    　前記第２間隔保持部材は、前記第３間隔保持部材と前記空気流の流れ方向に沿った上流側にオフセット配置され、前記第３幅風路の前記空気流の流れ方向に沿った上流側に配置されていることを特徴とする請求項３から５のいずれか１項に記載の熱交換素子。     The first heat transfer unit and the second heat transfer unit are alternately stacked and stacked.
    The first heat transfer unit and the second heat transfer unit form the first air passage or the second air passage between the partition member and the adjacent partition member installed on the partition member. With multiple spacing members,
    The space holding member is installed between two first space holding members that define the air passage width of the first width air passage and the first space holding member, and is installed between the air passages of the second width air passage. It has a second spacing member that defines the width and a third spacing member that is installed between the first spacing members and defines the width of the third width air passage.
    The second interval holding member is offset from the third interval holding member on the upstream side along the flow direction of the air flow, and is located on the upstream side of the third width air passage along the flow direction of the air flow. The heat exchange element according to any one of claims 3 to 5, wherein the heat exchange element is arranged.
  7. 　前記第１伝熱ユニットおよび前記第２伝熱ユニットは、前記空気流の流れ方向および前記空気流の流れ方向と直交する方向に沿って複数並べて設けられることを特徴とする請求項１から６のいずれか１項に記載の熱交換素子。 A plurality of the first heat transfer unit and the second heat transfer unit are provided side by side along the flow direction of the air flow and the direction orthogonal to the flow direction of the air flow, according to claims 1 to 6. The heat exchange element according to any one item.
  8. 　請求項１から７のいずれか１項に記載の熱交換素子と、
    　室外から室内に向けた第１空気流を前記第１風路に送る給気送風機と、
    　室内から室外に向けた第２空気流を前記第２風路に送る排気送風機と、
    　前記熱交換素子、前記給気送風機および前記排気送風機を収容するケーシングと、を備えることを特徴とする熱交換換気装置。     The heat exchange element according to any one of claims 1 to 7.
    An air supply blower that sends the first air flow from the outside to the inside of the room to the first air passage,
    An exhaust blower that sends a second air flow from the room to the outside to the second air passage,
    A heat exchange ventilator comprising the heat exchange element, the air supply blower, and a casing accommodating the exhaust blower.
PCT/JP2019/025595 2019-06-27 2019-06-27 Heat exchange element and heat exchange ventilation device WO2020261486A1 (en)

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JPS6412142U (en) * 1987-07-06 1989-01-23
JPH04313694A (en) * 1991-04-10 1992-11-05 Matsushita Electric Ind Co Ltd Heat exchanger device
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