WO2023286110A1 - Heat exchange element - Google Patents

Heat exchange element Download PDF

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Publication number
WO2023286110A1
WO2023286110A1 PCT/JP2021/026095 JP2021026095W WO2023286110A1 WO 2023286110 A1 WO2023286110 A1 WO 2023286110A1 JP 2021026095 W JP2021026095 W JP 2021026095W WO 2023286110 A1 WO2023286110 A1 WO 2023286110A1
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WO
WIPO (PCT)
Prior art keywords
heat exchange
heat transfer
exchange element
heat
strip
Prior art date
Application number
PCT/JP2021/026095
Other languages
French (fr)
Japanese (ja)
Inventor
覚司 脇田
佑一郎 池内
史恭 三宅
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP21950054.3A priority Critical patent/EP4372304A4/en
Priority to CN202180100277.XA priority patent/CN117651841A/en
Priority to CA3226203A priority patent/CA3226203A1/en
Priority to PCT/JP2021/026095 priority patent/WO2023286110A1/en
Priority to US18/559,975 priority patent/US20240240880A1/en
Priority to JP2023534435A priority patent/JPWO2023286110A1/ja
Publication of WO2023286110A1 publication Critical patent/WO2023286110A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F28F2275/065—Fastening; Joining by welding by ultrasonic or vibration welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/04—Means for preventing wrong assembling of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F28F9/0268—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box in the form of multiple deflectors for channeling the heat exchange medium

Definitions

  • the present disclosure relates to a counterflow heat exchange element formed by stacking heat transfer plates.
  • Patent Literature 1 discloses a heat exchange element formed into a hexagonal prism by stacking hexagonal heat transfer plates.
  • a part of the side surface serves as an inlet/outlet for heat exchange air.
  • the edges other than the edge facing the side surface serving as the air inlet/outlet are bonded between the stacked heat transfer plates to prevent air leakage from the heat exchange element.
  • Edge-to-edge bonding is accomplished by heat welding or gluing using epoxy.
  • An object of the present invention is to obtain a heat exchange element which can be easily performed.
  • the joint edges of the plurality of stacked heat transfer plates are in contact with each other and are joined by ultrasonic welding, and the joint edges include a first protrusion that protrudes along the stacking direction, A concave portion into which the first convex portion of the adjacent heat transfer plate is fitted is formed.
  • a heat exchange element in which the positions of the heat transfer plates can be accurately and easily positioned without displacement even when the heat transfer plates constituting the heat transfer element are fixed to each other by ultrasonic welding. Obtainable.
  • FIG. 1 is a perspective view of a heat exchange element according to Embodiment 1.
  • FIG. 2 is an exploded perspective view of the heat exchange element according to the first embodiment.
  • FIG. 3 is a perspective view of part of the heat exchange element according to the first embodiment.
  • the heat exchange element 50 is formed by alternately stacking hexagonal first heat transfer plates 1 and second heat transfer plates 2 to form a hexagonal prism as a whole.
  • the lamination direction of the first heat transfer plate 1 and the second heat transfer plate 2 is simply referred to as the lamination direction.
  • the heat exchange element 50 has a first inflow surface 61 that serves as an inflow port for air into the heat exchange element 50 , one of the six rectangular side surfaces.
  • a side surface facing the opposite direction to the first inflow surface 61 serves as a first outflow surface 71 through which the air flowing in from the first inflow surface 61 flows out.
  • an air passage 3 connecting the first inflow surface 61 and the first outflow surface 71 is formed inside the heat exchange element 50.
  • One of the two side surfaces adjacent to the first outflow surface 71 is the second inflow surface 62 that serves as an air inlet into the heat exchange element 50 .
  • a side surface facing the opposite direction to the second inflow surface 62 serves as a second outflow surface 72 through which the air flowing in from the second inflow surface 62 flows out.
  • the first inflow surface 61 and the second outflow surface 72 are adjacent to each other.
  • an air passage 4 connecting the second inflow surface 62 and the second outflow surface 72 is formed inside the heat exchange element 50 . The air passages 3 and 4 do not intersect inside the heat exchange element 50 .
  • the heat exchange element 50 is provided, for example, inside a ventilation device, and allows an exhaust air flow from the room to the outside to pass through the air passage 3, and an air supply flow from the outdoor to the room to pass through the air passage 4. and the exhaust stream.
  • FIG. 4 is a plan view of the first heat transfer plate in Embodiment 1.
  • the first heat transfer plate 1 has a hexagonal shape in plan view.
  • the air passage 3 is formed on one side of the first heat transfer plate 1
  • the air passage 4 is formed on the first heat transfer plate 1.
  • the first heat transfer plate 1 is provided with a heat exchange portion 5 for exchanging heat between the air passing through the air passage 3 and the air passing through the air passage 4 .
  • the heat exchanging portion 5 has a side surface on which the first inflow surface 61, the first outflow surface 71, the second inflow surface 62, and the second outflow surface 72 are not formed among the side surfaces of the heat exchange element 50.
  • the heat exchanging portion 5 is formed in a corrugated shape having a plurality of unevenness.
  • the air passing through the air passage 3 and the air passing through the air passage 4 pass in parallel and in opposite directions.
  • the first heat transfer plate 1 is provided with a first header portion 6a having a triangular shape in plan view.
  • the first header portion 6 a has a side 1 c facing the first inflow surface 61 of the heat exchange element 50 and a side 1 d facing the second outflow surface 72 .
  • the first heat transfer plate 1 is formed with a second header portion 6b having a triangular shape in plan view.
  • the second header portion 6 b has a side 1 e facing the first outflow surface 71 of the heat exchange element 50 and a side 1 f facing the second inflow surface 62 .
  • the first header portion 6a and the second header portion 6b are provided on one side and the other side with the heat exchange portion 5 interposed therebetween.
  • the sides 1a and 1b of the first heat transfer plate 1 are sides that are not in contact with the first header portion 6a and the second header portion 6b.
  • a rib 8 is formed on the first header portion 6a and the second header portion 6b.
  • a rib 8 formed in the first header portion 6a extends toward the heat exchange portion 5 from the side 1c.
  • the ribs 8 formed in the first header portion 6a extend substantially parallel to the side 1d, and smoothly pass the air flowing in from the first inflow surface 61, that is, the side 1c toward the heat exchange portion 5. .
  • a step 41 is provided in order to allow the inflow of air from the side 1c and prevent the inflow of air from the side 1d.
  • the outflow of air from the side 1e is allowed, and in order to prevent the outflow of air from the side 1f, there is a gap between the strip-shaped plane portion 23 and the strip-shaped plane portion 24 along the stacking direction.
  • a step 42 is provided.
  • the strip-shaped plane portion 23 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 24 is formed at a position above the strip-shaped plane portion 23 . It should be noted that the strip-shaped plane portion 23 and the region where the ribs 8 are formed may be formed on the same plane.
  • strip-shaped plane portions 25 and 26 which are strip-shaped plane regions extending along the side 1a, are provided.
  • the strip-shaped plane portion 25 and the strip-shaped plane portion 26 are formed with a step 43 provided between them at an intermediate portion in the direction along the side 1a.
  • the flat strip portion 26 is formed above the flat strip portion 25 .
  • strip-shaped plane portions 27 and 28 which are strip-shaped plane regions extending along the side 1b, are provided.
  • the strip-shaped plane portion 27 and the strip-shaped plane portion 28 are formed with a step 44 provided between them at an intermediate portion in the direction along the side 1b.
  • the flat strip portion 28 is formed above the flat strip portion 27 .
  • the first heat transfer plate 1 has a point-symmetrical shape about the center position of a hexagon in plan view.
  • FIG. 5 is a plan view of the second heat transfer plate in Embodiment 1.
  • FIG. The second heat transfer plate 2 has a hexagonal shape in plan view. Components similar to those of the first heat transfer plate 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the second heat transfer plate 2 is a mirror image of the first heat transfer plate 1 .
  • the air passage 4 is formed on one side of the second heat transfer plate 2, and the air passage 3 is formed on the second heat transfer plate 2. is formed on the other side of the
  • the second heat transfer plate 2 is provided with a heat exchange portion 5 for exchanging heat between the air passing through the air passage 3 and the air passing through the air passage 4 .
  • the heat exchange portion 5 includes the first inflow surface 61 , the first outflow surface 71 , the second inflow surface 62 , the second outflow surface among the side surfaces of the heat exchange element 50 . It is formed of a rectangular region whose short sides are sides 2a and 2b facing the side surfaces where 72 is not formed.
  • the second heat transfer plate 2 is provided with a third header portion 6c having a triangular shape in plan view.
  • the third header portion 6 c has a side 2 c facing the first inflow surface 61 of the heat exchange element 50 and a side 2 d facing the second outflow surface 72 .
  • the second heat transfer plate 2 is formed with a fourth header portion 6d having a triangular shape in plan view.
  • the fourth header portion 6 d has a side 2 e facing the first outflow surface 71 of the heat exchange element 50 and a side 2 f facing the second inflow surface 62 .
  • the third header portion 6c and the fourth header portion 6d are provided on one side and the other side with the heat exchange portion 5 interposed therebetween.
  • the sides 2a and 2b of the second heat transfer plate 2 are sides that do not contact the third header portion 6c and the fourth header portion 6d.
  • a rib 8 is formed on the third header portion 6c and the fourth header portion 6d.
  • a rib 8 formed in the third header portion 6c extends toward the heat exchange portion 5 from the side 2d.
  • the ribs 8 formed on the third header portion 6c extend substantially parallel to the side 2c, allowing the air from the heat exchange portion 5 to pass smoothly toward the side 2d.
  • the rib 8 formed in the fourth header portion 6d extends from the side 2f toward the heat exchange portion 5.
  • the ribs 8 formed on the fourth header portion 6d extend substantially parallel to the side 2e, and smoothly pass the air flowing in from the second inflow surface 62, that is, the side 2f toward the heat exchanging portion 5. .
  • a step 51 is provided in the second heat transfer plate 2, in order to allow the air to flow out from the side 2d and prevent the air to flow out from the side 2c.
  • the strip-shaped plane portion 32 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 31 is formed at a position above the strip-shaped plane portion 32 . It should be noted that the strip-shaped plane portion 32 and the region where the ribs 8 are formed may be formed on the same plane.
  • a strip-shaped plane portion 33 which is a strip-shaped plane region extending along the side 2e, is provided on the outer edge of the fourth header portion 6d.
  • a strip-shaped plane portion 34 which is a strip-shaped plane region extending along the side 2f, is provided on the outer edge of the fourth header portion 6d.
  • the inflow of air from the side 2f is allowed, and in order to prevent the inflow of air from the side 2e, there is a gap between the strip-shaped plane portion 33 and the strip-shaped plane portion 34 along the stacking direction.
  • a step 52 is provided.
  • strip-shaped plane portions 35 and 36 which are strip-shaped plane regions extending along the side 2a, are provided.
  • the strip-shaped plane portion 35 and the strip-shaped plane portion 36 are formed with a step 53 provided at an intermediate portion in the direction along the side 2a.
  • the strip-shaped flat portion 35 is formed above the strip-shaped flat portion 36 .
  • strip-shaped plane portions 37 and 38 which are strip-shaped plane regions extending along the side 2b, are provided.
  • the strip-shaped plane portion 37 and the strip-shaped plane portion 38 are formed with a step 54 provided between them at the intermediate portion in the direction along the side 2b.
  • the flat strip portion 37 is formed above the flat strip portion 38 .
  • the second heat transfer plate 2 has a point-symmetrical shape about the center position of the hexagon in plan view.
  • FIG. 6 is a partially enlarged sectional view enlarging the protrusion and the base portion in the heat exchange element according to the first embodiment.
  • FIG. 7 is a partially enlarged perspective cross-sectional view of the heat exchange element according to the first embodiment, in which the projection and the base portion are enlarged.
  • 8 is a plan view of the pedestal according to Embodiment 1.
  • the protrusion 13 is formed so as to protrude downward.
  • the protrusion 13 is a second protrusion.
  • the rear surface of the protrusion 13 is a recess.
  • a plurality of protrusions 13 are formed along sides 1c, 1e, 2d, and 2f serving as air inlets and outlets.
  • a plurality of projections 13 are formed on each side 1c, 1e, 2d and 2f.
  • the projections 13 are formed at positions dividing the lengths of the sides 1c, 1e, 2d, and 2f at equal intervals.
  • the height of the projection 13 has a ratio of 1 or less to the diameter at the root of the projection 13 . With this ratio, when the heat transfer plates 1 and 2 are formed by vacuum forming, it is possible to prevent the material from becoming too thin and forming holes.
  • the pedestal 14 is formed so as to protrude upward.
  • the pedestal 14 has a trapezoidal cross-sectional shape.
  • a flat area is provided on the top of the pedestal 14, and a recess 14a that is recessed downward is formed in the flat area.
  • the planar shape of the pedestal 14 is a diamond shape.
  • the recess 14a has an elongated hole shape whose longitudinal direction is the direction toward the center of the heat transfer plates 1 and 2 in a plan view.
  • the width of the recess 14a along the width direction is a width in which the protrusion 13 is fitted.
  • the projection 13 and the base 14 are formed at positions that overlap each other in a plan view when the first heat transfer plate 1 and the second heat transfer plate 2 are stacked. As shown in FIGS. 6 and 7 , when the heat transfer plates 1 and 2 are stacked, the planar area of the top of the pedestal 14 contacts the heat transfer plates 1 and 2 stacked above. Also, the projection 13 fits into the recess 14a of the base 14. As shown in FIG. Since the protrusion 13 is fitted in the recess 14a, it is not exposed to the air paths 3 and 4. - ⁇ Note that the projection 13 may protrude upward and the pedestal 14 may protrude downward.
  • the cone cover 15 is formed on the strip-shaped plane portions 25, 27, 36, 38 of the heat transfer plates 1, 2.
  • a plurality of cone covers 15 are formed for each of the strip-shaped plane portions 25 , 27 , 36 , 38 .
  • the cone cover 15 is formed at a position that divides the length of each strip-shaped plane portion 25, 27, 36, 38 into equal intervals.
  • the cone cover 15 is formed at a position closer to the heat exchanging portion 5 than the widthwise center of each of the flat strip portions 25 , 27 , 36 , 38 .
  • the cone 16 is a first convex part that is convex upward.
  • the cone 16 is formed in a conical shape with a curved tip.
  • the flat strip portion 21 contacts the flat strip portion 31 below.
  • the flat strip portion 22 abuts on the flat strip portion 32 above.
  • the flat strip portion 23 contacts the flat strip portion 33 below.
  • the flat strip portion 24 abuts on the flat strip portion 34 above.
  • the flat strip portion 25 contacts the flat strip portion 35 below.
  • the flat strip portion 26 abuts on the flat strip portion 36 above.
  • the flat strip portion 27 abuts on the flat strip portion 37 below.
  • the flat strip portion 28 contacts the flat strip portion 38 above.
  • the contacting flat strips 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 37, and 38 are joined by ultrasonic welding. It becomes the joint edge that is connected.
  • the cone cover 15 and the cone 16 are formed at positions that overlap each other in plan view when the heat transfer plates 1 and 2 are laminated.
  • the cone 16 fits into the recess of the cone cover 15.
  • the concave portion of the cone cover 15 may be concaved downward, and the cone 16 may be convex downward.
  • 13 to 16 are diagrams showing manufacturing steps of the heat exchange element according to the first embodiment.
  • the protrusion 13 fits into the hole of the receiving base 17 and is positioned.
  • the tips of the guide pins 18 are fitted into the recesses on the rear surface of the protrusions 13 of the second heat transfer plate 2 to be laminated next, and then, as shown in FIG.
  • the heat transfer plates 2 are laminated.
  • the belt-like plane portions 22, 24, 26, 28, 32, 34, 36, and 38 that are in contact with each other are arranged in a state in which both the upper and lower heat transfer plates 1 and 2 are positioned by the manufacturing apparatus. is fixed by ultrasonic welding.
  • the first heat transfer plate 1 to be laminated next is laminated while being positioned using guide pins 19 .
  • the tips of the guide pins 18 and 19 are fitted into the concave portions on the back surface of the protrusion 13, and the upper heat transfer plates 1 and 2 are pressed against the lower heat transfer plates 1 and 2, so that the protrusion 13 is fitted. Frictional resistance is generated between the flat portion of the pedestal 14 and the areas of the header portions 6a, 6b, 6c, 6d that contact the flat portion of the pedestal 14. As shown in FIG. This improves the reliability of ultrasonic welding and improves the yield.
  • the protrusions 13, the pedestal 14, the cone cover 15, and the cone 16 formed on the heat transfer plates 1 and 2 make it difficult for misalignment to occur in the stacked state. Therefore, the heat transfer plates 1 and 2 are less likely to be misaligned even by ultrasonic welding that vibrates the heat transfer plates 1 and 2 . Further, simply by stacking the heat transfer plates 1 and 2, the protrusions 13 are fitted into the recesses 14a of the pedestal 14, and the cones 16 are fitted into the cone cover 15, so that positioning can be performed accurately and easily. Further, if the projection 13 is tightly fitted in the recess 14a of the base 14 and the cone 16 is tightly fitted in the cone cover 15, it is possible to further prevent misalignment.
  • the heat transfer plates 1 and 2 shrink toward the center after molding. Since the recess 14a has an elongated hole shape whose longitudinal direction is the direction toward the center of the heat transfer plates 1 and 2 in plan view, the position of the pedestal 14 is shifted by the contraction toward the center of the heat transfer plates 1 and 2. Even if it is displaced, the projection 13 is easily fitted into the recess 14a. Further, since the heat transfer plates 1 and 2 are prevented from being displaced in a direction different from the direction toward the center of the heat transfer plates 1 and 2 due to the contact between the protrusions 13 and the recesses 14a, the positioning accuracy can be improved. be done.
  • the projection 13 and the base 14 are located near the belt-like plane portions 22, 24, 31, and 33 even within the areas of the header portions 6a, 6b, 6c, and 6d. Since it is in the parts 25, 26, 27, 28, 35, 36, 37, 38, even if a force to shift the heat transfer plates 1, 2 by ultrasonic welding acts, the bending stress generated in the heat transfer plates 1, 2 stays within a short distance, it is possible to make it difficult for the heat transfer plate to bend.
  • the protrusion 13, the pedestal 14, the cone cover 15, and the cone 16 each have a belt-like plane portion 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 37, By forming a plurality of grooves with respect to 38, it becomes even more difficult for misalignment to occur.
  • the base 14 is provided so that the longer diagonal of the two diagonals of the rhombus is aligned with the direction of air flow, and the top of the base 14 is in contact with the adjacent heat transfer plates 1 and 2. Therefore, the pedestal 14 is less likely to obstruct the flow of air.
  • the flow of air around the base 14 and the sides 1d, 1f, 2c, and 2e is reduced compared to the case where no gap is provided. turbulence can be reduced, and the occurrence of pressure loss can be suppressed.
  • the pedestals 14 linearly in the air flow direction, it is possible to similarly reduce turbulence in the air flow and suppress the occurrence of pressure loss. By arranging the pedestal 14 and the sides 1d, 1f, 2c and 2e as close to each other as possible with a gap therebetween, the distance between the welding point and the pedestal 14 becomes as short as possible, and positioning during welding can be made more effective.
  • the bases 14 are provided on the header portions 6a, 6b, 6c, and 6d, the bases 14 are provided on the flat strip portions 21, 22, 23, 24, 31, 32, 33, and 34, respectively.
  • the width of 21, 22, 23, 24, 31, 32, 33, 34 can be narrowed. If the heat transfer plates 1 and 2 are of the same size, the narrower the width of the flat strip portions 21, 22, 23, 24, 31, 32, 33, 34, the wider the header portions 6a, 6b, 6c, 6d. .
  • the pedestal 14 is provided in the flow path, the pedestal 14 can be attached to the strip-shaped plane portions 21, 22, 23, 24, 31, 32, 33, and 34 by widening the header portions 6a, 6b, 6c, and 6d.
  • the pressure loss of the heat exchange element 50 can be made lower than when it is provided.
  • the configuration shown in the above embodiment shows an example of the content of the present disclosure.
  • the configuration of the embodiment can be combined with another known technique. A part of the configuration of the embodiment can be omitted or changed without departing from the gist of the present disclosure.

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

Abstract

This heat exchange element is formed by stacking a plurality of heat transfer plates (1), each of the heat transfer plates (1) having a heat exchange unit (5) for allowing air that has passed by one stacking-direction side of the plurality of heat transfer plates (1) and air that has passed by the other stacking-direction side of the heat transfer plates (1) to pass therethrough in mutually opposite directions and carrying out heat exchange, header parts (6a, 6b) provided to the one side and the other side sandwiching the heat exchange unit (5) as seen along the stacking direction, and joining edge parts (25-28) provided along a side of the heat exchange unit (5) that does not touch the header parts (6a, 6b). The joining edge parts (25-28) provided to the stacked plurality of heat transfer plates (1) are brought into contact with one another and are joined to one another through ultrasonic welding. A first protrusion (16) that protrudes along the stacking direction, and a recess (15) into which a first protrusion (16) of an adjacent heat transfer plate fits, are formed on the joining edge parts (25-28).

Description

熱交換素子heat exchange element
　本開示は、伝熱板を積層させて形成された対向流型の熱交換素子に関する。 The present disclosure relates to a counterflow heat exchange element formed by stacking heat transfer plates.
　対向流型の熱交換素子では、樹脂シートで形成された伝熱板を積層させたものがある。例えば、特許文献１には、六角形形状の伝熱板を積層させて六角柱に形成された熱交換素子が開示されている。六角柱の熱交換素子では、側面の一部が熱交換する空気の出入り口となる。また、伝熱板の縁部のうち空気の出入口となる側面に面する縁部以外の縁部は、積層される伝熱板同士で接合され、熱交換素子からの空気の漏れが防がれる。縁部同士の接合は、熱溶着またはエポキシを使用した接着によって行われる。 　In the counterflow type heat exchange element, there is one in which heat transfer plates formed of resin sheets are laminated. For example, Patent Literature 1 discloses a heat exchange element formed into a hexagonal prism by stacking hexagonal heat transfer plates. In a hexagonal columnar heat exchange element, a part of the side surface serves as an inlet/outlet for heat exchange air. In addition, of the edges of the heat transfer plate, the edges other than the edge facing the side surface serving as the air inlet/outlet are bonded between the stacked heat transfer plates to prevent air leakage from the heat exchange element. . Edge-to-edge bonding is accomplished by heat welding or gluing using epoxy.
特開２００４－２９３８６２号公報JP 2004-293862 A
　近年では、伝熱板同士の接合方法に超音波溶着が用いられる場合がある。超音波溶着を用いることで、伝熱板同士の接合時間の短縮を図ることができる。超音波溶着では、縁部を挟んだ工具を通して縁部に超音波振動が伝えられる。超音波溶着を用いた伝熱板同士の接合では、超音波振動によって伝熱板の位置がずれてしまうという問題があった。 In recent years, ultrasonic welding is sometimes used to join heat transfer plates together. By using ultrasonic welding, it is possible to shorten the bonding time between the heat transfer plates. In ultrasonic welding, ultrasonic vibrations are transmitted to the edge through a tool that clamps the edge. In joining heat transfer plates using ultrasonic welding, there is a problem that the heat transfer plates are displaced due to ultrasonic vibration.
　本開示は、上記に鑑みてなされたものであって、熱交換素子を構成する伝熱板同士の固定を超音波溶着で行っても位置がずれることがなく、伝熱板同士の位置決めを正確かつ容易に行なえる熱交換素子を得ることを目的とする。 The present disclosure has been made in view of the above. An object of the present invention is to obtain a heat exchange element which can be easily performed.
　上述した課題を解決し、目的を達成するために、本開示にかかる熱交換素子は、複数の伝熱板が積層されて形成された熱交換素子であって、伝熱板は、複数の伝熱板の積層方向の一方側を通過する空気と積層方向の他方側を通る空気とを互いに対向する方向で通過させて熱交換させる熱交換部と、積層方向に沿って見て熱交換部を挟んで一方側と他方側とに設けられたヘッダ部と、熱交換部のうちヘッダ部と接しない辺に沿って設けられた接合縁部と、を有する。積層された複数の伝熱板が有する接合縁部同士は、互いに接触して超音波溶着によって接合されており、接合縁部には、積層方向に沿って凸となる第１の凸部と、隣接する伝熱板の第１の凸部が嵌まる凹部とが形成されている。 In order to solve the above-described problems and achieve the object, a heat exchange element according to the present disclosure is a heat exchange element formed by stacking a plurality of heat transfer plates, wherein the heat transfer plate includes a plurality of heat transfer plates. A heat exchange part that allows air passing through one side of the hot plate in the stacking direction and air passing through the other side of the stacking direction to pass in opposite directions to exchange heat, and a heat exchange part viewed along the stacking direction It has a header portion provided on one side and the other side of the heat exchange portion, and a joint edge portion provided along a side of the heat exchange portion that does not contact the header portion. The joint edges of the plurality of stacked heat transfer plates are in contact with each other and are joined by ultrasonic welding, and the joint edges include a first protrusion that protrudes along the stacking direction, A concave portion into which the first convex portion of the adjacent heat transfer plate is fitted is formed.
　本開示によれば、熱交換素子を構成する伝熱板同士の固定を超音波溶着で行っても位置がずれることがなく、伝熱板同士の位置決めを正確かつ容易に行なえる熱交換素子を得ることができる。 According to the present disclosure, there is provided a heat exchange element in which the positions of the heat transfer plates can be accurately and easily positioned without displacement even when the heat transfer plates constituting the heat transfer element are fixed to each other by ultrasonic welding. Obtainable.
実施の形態１にかかる熱交換素子の斜視図1 is a perspective view of a heat exchange element according to Embodiment 1. FIG. 実施の形態１にかかる熱交換素子の分解斜視図1 is an exploded perspective view of a heat exchange element according to Embodiment 1. FIG. 実施の形態１にかかる熱交換素子の一部を抜き出した斜視図FIG. 2 is a perspective view of a part of the heat exchange element according to the first embodiment; 実施の形態１における第１の伝熱板の平面図Plan view of the first heat transfer plate in Embodiment 1 実施の形態１における第２の伝熱板の平面図Plan view of the second heat transfer plate in Embodiment 1 実施の形態１にかかる熱交換素子における突起と台座部分を拡大した部分拡大断面図FIG. 4 is a partially enlarged cross-sectional view enlarging the protrusion and the base portion in the heat exchange element according to the first embodiment; 実施の形態１にかかる熱交換素子における突起と台座部分を拡大した部分拡大斜視断面図Partially enlarged perspective cross-sectional view enlarging the protrusion and the base portion in the heat exchange element according to the first embodiment 実施の形態１における台座の平面図Plan view of the pedestal in Embodiment 1 実施の形態１にかかる熱交換素子におけるコーンカバーとコーン部分を拡大した部分拡大断面図FIG. 4 is a partially enlarged sectional view enlarging the cone cover and the cone portion in the heat exchange element according to the first embodiment; 実施の形態１にかかる熱交換素子におけるコーンカバーとコーン部分を拡大した部分拡大斜視断面図Partially enlarged perspective cross-sectional view enlarging the cone cover and the cone portion in the heat exchange element according to the first embodiment 実施の形態１にかかる熱交換素子の製造装置の概略構成を示す図1 is a diagram showing a schematic configuration of a heat exchange element manufacturing apparatus according to a first embodiment; FIG. 図１１に示したガイドピンが突起に嵌まった状態を示す斜視断面図FIG. 12 is a perspective cross-sectional view showing a state in which the guide pin shown in FIG. 11 is fitted in the projection; 実施の形態１にかかる熱交換素子の製造工程を示す図4A to 4C show manufacturing steps of the heat exchange element according to the first embodiment; 実施の形態１にかかる熱交換素子の製造工程を示す図4A to 4C show manufacturing steps of the heat exchange element according to the first embodiment; 実施の形態１にかかる熱交換素子の製造工程を示す図4A to 4C show manufacturing steps of the heat exchange element according to the first embodiment; 実施の形態１にかかる熱交換素子の製造工程を示す図4A to 4C show manufacturing steps of the heat exchange element according to the first embodiment;
　以下に、実施の形態にかかる熱交換素子を図面に基づいて詳細に説明する。 The heat exchange element according to the embodiment will be described in detail below with reference to the drawings.
実施の形態１．
　図１は、実施の形態１にかかる熱交換素子の斜視図である。図２は、実施の形態１にかかる熱交換素子の分解斜視図である。図３は、実施の形態１にかかる熱交換素子の一部を抜き出した斜視図である。熱交換素子５０は、六角形形状の第１の伝熱板１と第２の伝熱板２とが交互に積層されて、全体が六角柱に形成されている。なお、以下の説明では、第１の伝熱板１と第２の伝熱板２との積層方向を単に積層方向と称する。また、図１の紙面上での上下方向を熱交換素子５０における上下方向として説明する。 Embodiment 1.
FIG. 1 is a perspective view of a heat exchange element according to Embodiment 1. FIG. 2 is an exploded perspective view of the heat exchange element according to the first embodiment. FIG. 3 is a perspective view of part of the heat exchange element according to the first embodiment. FIG. The heat exchange element 50 is formed by alternately stacking hexagonal first heat transfer plates 1 and second heat transfer plates 2 to form a hexagonal prism as a whole. In the following description, the lamination direction of the first heat transfer plate 1 and the second heat transfer plate 2 is simply referred to as the lamination direction. Also, the up-down direction on the paper surface of FIG.
　熱交換素子５０は、方形形状となる６つの側面のうちの１つの側面が、熱交換素子５０の内部への空気の流入口となる第１の流入面６１となる。第１の流入面６１と反対方向を向く側面が、第１の流入面６１から流入した空気が流出する第１の流出面７１となる。熱交換素子５０の内部には、第１の流入面６１と第１の流出面７１とを結ぶ風路３が形成される。 The heat exchange element 50 has a first inflow surface 61 that serves as an inflow port for air into the heat exchange element 50 , one of the six rectangular side surfaces. A side surface facing the opposite direction to the first inflow surface 61 serves as a first outflow surface 71 through which the air flowing in from the first inflow surface 61 flows out. Inside the heat exchange element 50, an air passage 3 connecting the first inflow surface 61 and the first outflow surface 71 is formed.
　第１の流出面７１と隣接する２つの側面のうちの一方の側面が、熱交換素子５０の内部への空気の流入口となる第２の流入面６２となる。第２の流入面６２と反対方向を向く側面が、第２の流入面６２から流入した空気が流出する第２の流出面７２となる。第１の流入面６１と第２の流出面７２は互いに隣接する。熱交換素子５０の内部には、第２の流入面６２と第２の流出面７２とを結ぶ風路４が形成される。熱交換素子５０の内部で風路３と風路４とは交わらない。 One of the two side surfaces adjacent to the first outflow surface 71 is the second inflow surface 62 that serves as an air inlet into the heat exchange element 50 . A side surface facing the opposite direction to the second inflow surface 62 serves as a second outflow surface 72 through which the air flowing in from the second inflow surface 62 flows out. The first inflow surface 61 and the second outflow surface 72 are adjacent to each other. Inside the heat exchange element 50, an air passage 4 connecting the second inflow surface 62 and the second outflow surface 72 is formed. The air passages 3 and 4 do not intersect inside the heat exchange element 50 .
　熱交換素子５０は、例えば換気装置の内部に設けられて、室内から室外に向かう排気流を風路３に通過させ、室外から室内に向かい給気流を風路４に通過させることで、給気流と排気流との間で熱交換させることができる。 The heat exchange element 50 is provided, for example, inside a ventilation device, and allows an exhaust air flow from the room to the outside to pass through the air passage 3, and an air supply flow from the outdoor to the room to pass through the air passage 4. and the exhaust stream.
　図４は、実施の形態１における第１の伝熱板の平面図である。第１の伝熱板１は、平面視において六角形形状となっている。第１の伝熱板１と第２の伝熱板２との積層によって、風路３は第１の伝熱板１の一方面側に形成され、風路４は第１の伝熱板１の他方面側に形成される。第１の伝熱板１には、風路３を通過する空気と風路４を通過する空気との間で熱交換をさせる熱交換部５が設けられている。熱交換部５は、熱交換素子５０の側面のうち、第１の流入面６１、第１の流出面７１、第２の流入面６２、第２の流出面７２が形成されていない側面に面する辺１ａ，１ｂを短辺とする長方形の領域で形成されている。詳細な構造の説明は省略するが、熱交換部５には複数の凹凸を有する波形形状が形成されている。熱交換部５では、風路３を通過する空気と風路４を通過する空気とが互いに平行かつ反対向きに通過する。 FIG. 4 is a plan view of the first heat transfer plate in Embodiment 1. FIG. The first heat transfer plate 1 has a hexagonal shape in plan view. By laminating the first heat transfer plate 1 and the second heat transfer plate 2, the air passage 3 is formed on one side of the first heat transfer plate 1, and the air passage 4 is formed on the first heat transfer plate 1. is formed on the other side of the The first heat transfer plate 1 is provided with a heat exchange portion 5 for exchanging heat between the air passing through the air passage 3 and the air passing through the air passage 4 . The heat exchanging portion 5 has a side surface on which the first inflow surface 61, the first outflow surface 71, the second inflow surface 62, and the second outflow surface 72 are not formed among the side surfaces of the heat exchange element 50. It is formed of a rectangular area with sides 1a and 1b as short sides. Although a detailed description of the structure is omitted, the heat exchanging portion 5 is formed in a corrugated shape having a plurality of unevenness. In the heat exchange section 5, the air passing through the air passage 3 and the air passing through the air passage 4 pass in parallel and in opposite directions.
　第１の伝熱板１には、平面視において三角形形状である第１のヘッダ部６ａが設けられている。第１のヘッダ部６ａは、熱交換素子５０における第１の流入面６１に面する辺１ｃと、第２の流出面７２に面する辺１ｄとを有する。 The first heat transfer plate 1 is provided with a first header portion 6a having a triangular shape in plan view. The first header portion 6 a has a side 1 c facing the first inflow surface 61 of the heat exchange element 50 and a side 1 d facing the second outflow surface 72 .
　第１の伝熱板１には、平面視において三角形形状である第２のヘッダ部６ｂが形成されている。第２のヘッダ部６ｂには、熱交換素子５０における第１の流出面７１に面する辺１ｅと、第２の流入面６２に面する辺１ｆとを有する。第１のヘッダ部６ａと第２のヘッダ部６ｂとは、熱交換部５を挟んだ一方側と他方側に設けられている。第１の伝熱板１の辺１ａ，１ｂは第１のヘッダ部６ａと第２のヘッダ部６ｂと接しない辺である。 The first heat transfer plate 1 is formed with a second header portion 6b having a triangular shape in plan view. The second header portion 6 b has a side 1 e facing the first outflow surface 71 of the heat exchange element 50 and a side 1 f facing the second inflow surface 62 . The first header portion 6a and the second header portion 6b are provided on one side and the other side with the heat exchange portion 5 interposed therebetween. The sides 1a and 1b of the first heat transfer plate 1 are sides that are not in contact with the first header portion 6a and the second header portion 6b.
　第１のヘッダ部６ａおよび第２のヘッダ部６ｂにはリブ８が形成されている。第１のヘッダ部６ａに形成されたリブ８は、辺１ｃから熱交換部５に向かって延びている。第１のヘッダ部６ａに形成されたリブ８は、辺１ｄとほぼ平行に延びており、第１の流入面６１すなわち辺１ｃ側から流入した空気を熱交換部５に向けて円滑に通過させる。 A rib 8 is formed on the first header portion 6a and the second header portion 6b. A rib 8 formed in the first header portion 6a extends toward the heat exchange portion 5 from the side 1c. The ribs 8 formed in the first header portion 6a extend substantially parallel to the side 1d, and smoothly pass the air flowing in from the first inflow surface 61, that is, the side 1c toward the heat exchange portion 5. .
　第２のヘッダ部６ｂに形成されたリブ８は、辺１ｅから熱交換部５に向かって延びている。第２のヘッダ部６ｂに形成されたリブ８は、辺１ｆとほぼ平行に延びており、熱交換部５からの空気を辺１ｅに向けて円滑に通過させる。 The rib 8 formed on the second header portion 6b extends from the side 1e toward the heat exchange portion 5. The ribs 8 formed in the second header portion 6b extend substantially parallel to the side 1f, allowing the air from the heat exchange portion 5 to smoothly pass toward the side 1e.
　第１のヘッダ部６ａの外縁には、辺１ｃに沿って延びる帯状の平面領域である帯状平面部２１が設けられている。第１のヘッダ部６ａの外縁には、辺１ｄに沿って延びる帯状の平面領域である帯状平面部２２が設けられている。第１の伝熱板１では、辺１ｃからの空気の流入は可能とし、辺１ｄからの空気の流入は防ぐため、帯状平面部２１と帯状平面部２２との間には積層方向に沿った段差４１が設けられている。より具体的には、帯状平面部２１はリブ８が形成された領域よりも下方となる位置に形成され、帯状平面部２２は帯状平面部２１よりも上方となる位置に形成されている。なお、帯状平面部２１と、リブ８が形成された領域とが同一面で形成されていてもよい。 A strip-shaped plane portion 21, which is a strip-shaped plane region extending along the side 1c, is provided on the outer edge of the first header portion 6a. A strip-shaped plane portion 22, which is a strip-shaped plane region extending along the side 1d, is provided on the outer edge of the first header portion 6a. In the first heat transfer plate 1, in order to allow the inflow of air from the side 1c and prevent the inflow of air from the side 1d, there is a gap between the strip-shaped plane portion 21 and the strip-shaped plane portion 22 along the stacking direction. A step 41 is provided. More specifically, the strip-shaped plane portion 21 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 22 is formed at a position above the strip-shaped plane portion 21 . It should be noted that the strip-shaped flat portion 21 and the region where the ribs 8 are formed may be formed on the same plane.
　第２のヘッダ部６ｂの外縁には、辺１ｅに沿って延びる帯状の平面領域である帯状平面部２３が設けられている。第２のヘッダ部６ｂの外縁には、辺１ｆに沿って延びる帯状の平面領域である帯状平面部２４が設けられている。第１の伝熱板１では、辺１ｅからの空気の流出は可能とし、辺１ｆからの空気の流出を防ぐために、帯状平面部２３と帯状平面部２４との間には積層方向に沿った段差４２が設けられている。より具体的には、帯状平面部２３はリブ８が形成された領域よりも下方となる位置に形成され、帯状平面部２４は帯状平面部２３よりも上方となる位置に形成されている。なお、帯状平面部２３と、リブ８が形成された領域とが同一平面で形成されていてもよい。 A strip-shaped plane portion 23, which is a strip-shaped plane region extending along the side 1e, is provided on the outer edge of the second header portion 6b. A strip-shaped plane portion 24, which is a strip-shaped plane region extending along the side 1f, is provided on the outer edge of the second header portion 6b. In the first heat transfer plate 1, the outflow of air from the side 1e is allowed, and in order to prevent the outflow of air from the side 1f, there is a gap between the strip-shaped plane portion 23 and the strip-shaped plane portion 24 along the stacking direction. A step 42 is provided. More specifically, the strip-shaped plane portion 23 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 24 is formed at a position above the strip-shaped plane portion 23 . It should be noted that the strip-shaped plane portion 23 and the region where the ribs 8 are formed may be formed on the same plane.
　熱交換部５の外縁には、辺１ａに沿って延びる帯状の平面領域である帯状平面部２５，２６が設けられている。帯状平面部２５と帯状平面部２６とは、辺１ａに沿った方向の中間部分で互いに段差４３を設けて形成されている。帯状平面部２６のほうが帯状平面部２５よりも上方に形成されている。 At the outer edge of the heat exchanging portion 5, strip-shaped plane portions 25 and 26, which are strip-shaped plane regions extending along the side 1a, are provided. The strip-shaped plane portion 25 and the strip-shaped plane portion 26 are formed with a step 43 provided between them at an intermediate portion in the direction along the side 1a. The flat strip portion 26 is formed above the flat strip portion 25 .
　熱交換部５の外縁には、辺１ｂに沿って延びる帯状の平面領域である帯状平面部２７，２８が設けられている。帯状平面部２７と帯状平面部２８とは、辺１ｂに沿った方向の中間部分で互いに段差４４を設けて形成されている。帯状平面部２８のほうが帯状平面部２７よりも上方に形成されている。第１の伝熱板１は、平面視において六角形形状の中心位置を中心とする点対称な形状となっている。 At the outer edge of the heat exchanging portion 5, strip-shaped plane portions 27 and 28, which are strip-shaped plane regions extending along the side 1b, are provided. The strip-shaped plane portion 27 and the strip-shaped plane portion 28 are formed with a step 44 provided between them at an intermediate portion in the direction along the side 1b. The flat strip portion 28 is formed above the flat strip portion 27 . The first heat transfer plate 1 has a point-symmetrical shape about the center position of a hexagon in plan view.
　図５は、実施の形態１における第２の伝熱板の平面図である。第２の伝熱板２は、平面視において六角形形状となっている。第１の伝熱板１と同様の構成については同じ符号を付して詳細な説明を省略する。第２の伝熱板２は、第１の伝熱板１と鏡像関係となっている。 FIG. 5 is a plan view of the second heat transfer plate in Embodiment 1. FIG. The second heat transfer plate 2 has a hexagonal shape in plan view. Components similar to those of the first heat transfer plate 1 are denoted by the same reference numerals, and detailed description thereof is omitted. The second heat transfer plate 2 is a mirror image of the first heat transfer plate 1 .
　第１の伝熱板１と第２の伝熱板２との積層によって、風路４は第２の伝熱板２の一方面側に形成され、風路３は第２の伝熱板２の他方面側に形成される。第２の伝熱板２には、風路３を通過する空気と風路４を通過する空気との間で熱交換をさせる熱交換部５が設けられている。第２の伝熱板２では、熱交換部５は、熱交換素子５０の側面のうち、第１の流入面６１、第１の流出面７１、第２の流入面６２、第２の流出面７２が形成されていない側面に面する辺２ａ，２ｂを短辺とする長方形の領域で形成されている。 By laminating the first heat transfer plate 1 and the second heat transfer plate 2, the air passage 4 is formed on one side of the second heat transfer plate 2, and the air passage 3 is formed on the second heat transfer plate 2. is formed on the other side of the The second heat transfer plate 2 is provided with a heat exchange portion 5 for exchanging heat between the air passing through the air passage 3 and the air passing through the air passage 4 . In the second heat transfer plate 2 , the heat exchange portion 5 includes the first inflow surface 61 , the first outflow surface 71 , the second inflow surface 62 , the second outflow surface among the side surfaces of the heat exchange element 50 . It is formed of a rectangular region whose short sides are sides 2a and 2b facing the side surfaces where 72 is not formed.
　第２の伝熱板２には、平面視において三角形形状である第３のヘッダ部６ｃが設けられている。第３のヘッダ部６ｃは、熱交換素子５０における第１の流入面６１に面する辺２ｃと、第２の流出面７２に面する辺２ｄとを有する。 The second heat transfer plate 2 is provided with a third header portion 6c having a triangular shape in plan view. The third header portion 6 c has a side 2 c facing the first inflow surface 61 of the heat exchange element 50 and a side 2 d facing the second outflow surface 72 .
　第２の伝熱板２には、平面視において三角形形状である第４のヘッダ部６ｄが形成されている。第４のヘッダ部６ｄには、熱交換素子５０における第１の流出面７１に面する辺２ｅと、第２の流入面６２に面する辺２ｆとを有する。第３のヘッダ部６ｃと第４のヘッダ部６ｄとは、熱交換部５を挟んだ一方側と他方側に設けられている。第２の伝熱板２の辺２ａ，２ｂは第３のヘッダ部６ｃと第４のヘッダ部６ｄと接しない辺である。 The second heat transfer plate 2 is formed with a fourth header portion 6d having a triangular shape in plan view. The fourth header portion 6 d has a side 2 e facing the first outflow surface 71 of the heat exchange element 50 and a side 2 f facing the second inflow surface 62 . The third header portion 6c and the fourth header portion 6d are provided on one side and the other side with the heat exchange portion 5 interposed therebetween. The sides 2a and 2b of the second heat transfer plate 2 are sides that do not contact the third header portion 6c and the fourth header portion 6d.
　第３のヘッダ部６ｃおよび第４のヘッダ部６ｄにはリブ８が形成されている。第３のヘッダ部６ｃに形成されたリブ８は、辺２ｄから熱交換部５に向かって延びている。第３のヘッダ部６ｃに形成されたリブ８は、辺２ｃとほぼ平行に延びており、熱交換部５からの空気を辺２ｄ側に向けて円滑に通過させる。 A rib 8 is formed on the third header portion 6c and the fourth header portion 6d. A rib 8 formed in the third header portion 6c extends toward the heat exchange portion 5 from the side 2d. The ribs 8 formed on the third header portion 6c extend substantially parallel to the side 2c, allowing the air from the heat exchange portion 5 to pass smoothly toward the side 2d.
　第４のヘッダ部６ｄに形成されたリブ８は、辺２ｆから熱交換部５に向かって延びている。第４のヘッダ部６ｄに形成されたリブ８は、辺２ｅとほぼ平行に延びており、第２の流入面６２すなわち辺２ｆ側から流入した空気を熱交換部５に向けて円滑に通過させる。 The rib 8 formed in the fourth header portion 6d extends from the side 2f toward the heat exchange portion 5. The ribs 8 formed on the fourth header portion 6d extend substantially parallel to the side 2e, and smoothly pass the air flowing in from the second inflow surface 62, that is, the side 2f toward the heat exchanging portion 5. .
　第３のヘッダ部６ｃの外縁には、辺２ｃに沿って延びる帯状の平面領域である帯状平面部３１が設けられている。第３のヘッダ部６ｃの外縁には、辺２ｄに沿って延びる帯状の平面領域である帯状平面部３２が設けられている。第２の伝熱板２では、辺２ｄからの空気の流出は可能とし、辺２ｃからの空気の流出は防ぐため、帯状平面部３１と帯状平面部３２との間には積層方向に沿った段差５１が設けられている。より具体的には、帯状平面部３２はリブ８が形成された領域よりも下方となる位置に形成され、帯状平面部３１は帯状平面部３２よりも上方となる位置に形成されている。なお、帯状平面部３２と、リブ８が形成された領域とが同一平面で形成されていてもよい。 A strip-shaped plane portion 31, which is a strip-shaped plane region extending along the side 2c, is provided on the outer edge of the third header portion 6c. A strip-shaped plane portion 32, which is a strip-shaped plane region extending along the side 2d, is provided on the outer edge of the third header portion 6c. In the second heat transfer plate 2, in order to allow the air to flow out from the side 2d and prevent the air to flow out from the side 2c, there is a gap between the flat strip portion 31 and the flat strip portion 32 along the stacking direction. A step 51 is provided. More specifically, the strip-shaped plane portion 32 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 31 is formed at a position above the strip-shaped plane portion 32 . It should be noted that the strip-shaped plane portion 32 and the region where the ribs 8 are formed may be formed on the same plane.
　第４のヘッダ部６ｄの外縁には、辺２ｅに沿って延びる帯状の平面領域である帯状平面部３３が設けられている。第４のヘッダ部６ｄの外縁には、辺２ｆに沿って延びる帯状の平面領域である帯状平面部３４が設けられている。第２の伝熱板２では、辺２ｆからの空気の流入は可能とし、辺２ｅからの空気の流入を防ぐために、帯状平面部３３と帯状平面部３４との間には積層方向に沿った段差５２が設けられている。より具体的には、帯状平面部３４はリブ８が形成された領域よりも下方となる位置に形成され、帯状平面部３３は帯状平面部３４よりも上方となる位置に形成されている。なお、帯状平面部３４と、リブ８が形成された領域とが同一平面で形成されていてもよい。 A strip-shaped plane portion 33, which is a strip-shaped plane region extending along the side 2e, is provided on the outer edge of the fourth header portion 6d. A strip-shaped plane portion 34, which is a strip-shaped plane region extending along the side 2f, is provided on the outer edge of the fourth header portion 6d. In the second heat transfer plate 2, the inflow of air from the side 2f is allowed, and in order to prevent the inflow of air from the side 2e, there is a gap between the strip-shaped plane portion 33 and the strip-shaped plane portion 34 along the stacking direction. A step 52 is provided. More specifically, the strip-shaped plane portion 34 is formed at a position below the region where the ribs 8 are formed, and the strip-shaped plane portion 33 is formed at a position above the strip-shaped plane portion 34 . It should be noted that the strip-shaped plane portion 34 and the region where the ribs 8 are formed may be formed on the same plane.
　熱交換部５の外縁には、辺２ａに沿って延びる帯状の平面領域である帯状平面部３５，３６が設けられている。帯状平面部３５と帯状平面部３６とは、辺２ａに沿った方向の中間部分で互いに段差５３を設けて形成されている。帯状平面部３５のほうが帯状平面部３６よりも上方に形成されている。 At the outer edge of the heat exchanging portion 5, strip-shaped plane portions 35 and 36, which are strip-shaped plane regions extending along the side 2a, are provided. The strip-shaped plane portion 35 and the strip-shaped plane portion 36 are formed with a step 53 provided at an intermediate portion in the direction along the side 2a. The strip-shaped flat portion 35 is formed above the strip-shaped flat portion 36 .
　熱交換部５の外縁には、辺２ｂに沿って延びる帯状の平面領域である帯状平面部３７，３８が設けられている。帯状平面部３７と帯状平面部３８とは、辺２ｂに沿った方向の中間部分で互いに段差５４を設けて形成されている。帯状平面部３７のほうが帯状平面部３８よりも上方に形成されている。第２の伝熱板２は、平面視において六角形形状の中心位置を中心とする点対称な形状となっている。 At the outer edge of the heat exchanging portion 5, strip-shaped plane portions 37 and 38, which are strip-shaped plane regions extending along the side 2b, are provided. The strip-shaped plane portion 37 and the strip-shaped plane portion 38 are formed with a step 54 provided between them at the intermediate portion in the direction along the side 2b. The flat strip portion 37 is formed above the flat strip portion 38 . The second heat transfer plate 2 has a point-symmetrical shape about the center position of the hexagon in plan view.
　次に、第１の伝熱板１および第２の伝熱板２に形成されている突起１３、台座１４、コーンカバー１５、コーン１６について説明する。 Next, the protrusions 13, bases 14, cone covers 15, and cones 16 formed on the first heat transfer plate 1 and the second heat transfer plate 2 will be described.
　突起１３および台座１４は、ヘッダ部６ａ，６ｂ，６ｃ，６ｄに形成されている。図６は、実施の形態１にかかる熱交換素子における突起と台座部分を拡大した部分拡大断面図である。図７は、実施の形態１にかかる熱交換素子における突起と台座部分を拡大した部分拡大斜視断面図である。図８は、実施の形態１における台座の平面図である。 The projections 13 and the bases 14 are formed on the header portions 6a, 6b, 6c, 6d. FIG. 6 is a partially enlarged sectional view enlarging the protrusion and the base portion in the heat exchange element according to the first embodiment. FIG. 7 is a partially enlarged perspective cross-sectional view of the heat exchange element according to the first embodiment, in which the projection and the base portion are enlarged. 8 is a plan view of the pedestal according to Embodiment 1. FIG.
　突起１３は、下方に向けて凸となるように形成されている。突起１３は、第２の凸部である。突起１３の裏面は凹みとなっている。図４および図５に戻って、突起１３は、空気の出入口となる辺１ｃ，１ｅ，２ｄ，２ｆに沿って複数形成されている。各辺１ｃ，１ｅ，２ｄ，２ｆに対して複数の突起１３が形成されている。突起１３は、各辺１ｃ，１ｅ，２ｄ，２ｆの長さを等間隔に分ける位置に形成されている。突起１３の高さは、突起１３の根元での直径に対して比率が１以下となっている。この比率によって、伝熱板１，２を真空成形で成形した場合に、素材が薄くなりすぎて孔があくことを防ぐことができる。 The protrusion 13 is formed so as to protrude downward. The protrusion 13 is a second protrusion. The rear surface of the protrusion 13 is a recess. Returning to FIGS. 4 and 5, a plurality of protrusions 13 are formed along sides 1c, 1e, 2d, and 2f serving as air inlets and outlets. A plurality of projections 13 are formed on each side 1c, 1e, 2d and 2f. The projections 13 are formed at positions dividing the lengths of the sides 1c, 1e, 2d, and 2f at equal intervals. The height of the projection 13 has a ratio of 1 or less to the diameter at the root of the projection 13 . With this ratio, when the heat transfer plates 1 and 2 are formed by vacuum forming, it is possible to prevent the material from becoming too thin and forming holes.
　図６および図７に示すように、台座１４は、上方に向けて凸となるように形成されている。台座１４は、断面形状が台形形状となっている。台座１４の頂部には平面である領域が設けられており、その平面である領域には下方に凹む凹み１４ａが形成されている。図８に示すように、台座１４の平面形状はひし形形状となっている。凹み１４ａは、平面視において伝熱板１，２の中心に向かう方向を長手方向とする長穴形状となっている。凹み１４ａの短手方向に沿った幅は、突起１３が嵌まる幅となっている。 As shown in FIGS. 6 and 7, the pedestal 14 is formed so as to protrude upward. The pedestal 14 has a trapezoidal cross-sectional shape. A flat area is provided on the top of the pedestal 14, and a recess 14a that is recessed downward is formed in the flat area. As shown in FIG. 8, the planar shape of the pedestal 14 is a diamond shape. The recess 14a has an elongated hole shape whose longitudinal direction is the direction toward the center of the heat transfer plates 1 and 2 in a plan view. The width of the recess 14a along the width direction is a width in which the protrusion 13 is fitted.
　台座１４は、ひし形の２本の対角線のうち長いほうの対角線が、その台座１４が沿う辺１ｄ，１ｆ，２ｃ，２ｅと平行となるように設けられる。すなわち、ひし形の２本の対角線のうち長いほうの対角線を空気の流れ方向に沿わせて台座１４が設けられていればよい。台座１４は、帯状平面部２２，２４，３１，３３に可能な限り近傍であるが間に空隙を設け、台座１４と帯状平面部２２，２４，３１，３３とが重ならない程度に離れた位置に空気の流れ方向と概ね平行となる一直線上に設けられている。なお、本実施の形態では、台座１４は、帯状平面部２２，２４，３１，３３と概ね平行となる一直線上に配置されているとも言い換えできる。 The pedestal 14 is provided so that the longer diagonal of the two diagonals of the rhombus is parallel to the sides 1d, 1f, 2c, 2e along which the pedestal 14 extends. In other words, the pedestal 14 may be provided such that the longer diagonal of the two diagonals of the rhombus is aligned with the direction of air flow. The pedestal 14 is located as close as possible to the flat strips 22, 24, 31, 33, but with a gap therebetween, and is positioned far enough away from the flat strips 22, 24, 31, 33 so that the pedestal 14 and the flat strips 22, 24, 31, 33 do not overlap. are provided on a straight line substantially parallel to the direction of air flow. In addition, in the present embodiment, it can be said that the base 14 is arranged on a straight line substantially parallel to the flat strip portions 22 , 24 , 31 , 33 .
　突起１３と台座１４とは、第１の伝熱板１と第２の伝熱板２とを積層したときに、平面視において互いに重なる位置に形成されている。図６および図７に示すように、伝熱板１，２を積層させたとき、台座１４の頂部の平面となる領域は上方に積層された伝熱板１，２に当接する。また、突起１３は台座１４の凹み１４ａに嵌まる。突起１３は凹み１４ａに嵌まるので風路３，４には露出しない。なお、突起１３が上方に凸となり、台座１４が下方に凸となっていてもよい。 The projection 13 and the base 14 are formed at positions that overlap each other in a plan view when the first heat transfer plate 1 and the second heat transfer plate 2 are stacked. As shown in FIGS. 6 and 7 , when the heat transfer plates 1 and 2 are stacked, the planar area of the top of the pedestal 14 contacts the heat transfer plates 1 and 2 stacked above. Also, the projection 13 fits into the recess 14a of the base 14. As shown in FIG. Since the protrusion 13 is fitted in the recess 14a, it is not exposed to the air paths 3 and 4. - 特許庁Note that the projection 13 may protrude upward and the pedestal 14 may protrude downward.
　図４および図５に示すように、コーンカバー１５は、伝熱板１，２の帯状平面部２５，２７，３６，３８に形成されている。コーンカバー１５は、各帯状平面部２５，２７，３６，３８に対して複数形成されている。コーンカバー１５は、各帯状平面部２５，２７，３６，３８の長さを等間隔に分ける位置に形成されている。コーンカバー１５は、各帯状平面部２５，２７，３６，３８の幅方向中心よりも熱交換部５に近い位置に形成されている。 　As shown in Figs. 4 and 5, the cone cover 15 is formed on the strip-shaped plane portions 25, 27, 36, 38 of the heat transfer plates 1, 2. A plurality of cone covers 15 are formed for each of the strip-shaped plane portions 25 , 27 , 36 , 38 . The cone cover 15 is formed at a position that divides the length of each strip-shaped plane portion 25, 27, 36, 38 into equal intervals. The cone cover 15 is formed at a position closer to the heat exchanging portion 5 than the widthwise center of each of the flat strip portions 25 , 27 , 36 , 38 .
　図９は、実施の形態１にかかる熱交換素子におけるコーンカバーとコーン部分を拡大した部分拡大断面図である。図１０は、実施の形態１にかかる熱交換素子におけるコーンカバーとコーン部分を拡大した部分拡大斜視断面図である。コーンカバー１５は、下方から上方に向けて凹んだ凹部である。コーンカバー１５は、凹部の裏面側では凸となっている。コーンカバー１５は、先端が平面となる円錐状で形成されている。コーンカバー１５の高さは、熱交換部５とコーンカバー１５との隙間距離に対して比率１以下となっている。この比率によって、伝熱板１，２を真空成形で成形した場合に、素材が薄くなりすぎて孔があくことを防ぐことができる。コーンカバー１５の凹部は、各帯状平面部２５，２７，３６，３８の長さ方向に延びた長穴形状となっている。 FIG. 9 is a partially enlarged sectional view enlarging the cone cover and the cone portion in the heat exchange element according to the first embodiment. 10 is a partially enlarged perspective cross-sectional view showing an enlarged cone cover and cone portion in the heat exchange element according to the first embodiment. FIG. The cone cover 15 is a recess that is recessed upward from below. The cone cover 15 is convex on the back side of the recess. The cone cover 15 is formed in a conical shape with a flat tip. The height of the cone cover 15 has a ratio of 1 or less to the gap distance between the heat exchange part 5 and the cone cover 15 . With this ratio, when the heat transfer plates 1 and 2 are formed by vacuum forming, it is possible to prevent the material from becoming too thin and forming holes. The concave portion of the cone cover 15 has an elongated hole shape extending in the longitudinal direction of each of the belt-like flat portions 25, 27, 36, and 38. As shown in FIG.
　図４および図５に示すように、コーン１６は、伝熱板１，２の帯状平面部２６，２８，３５，３７に形成されている。コーン１６は、各帯状平面部２６，２８，３５，３７に対して複数形成されている。コーン１６は、各帯状平面部２６，２８，３５，３７の長さを等間隔に分ける位置に形成されている。コーン１６は、各帯状平面部２６，２８，３５，３７の幅方向中心よりも熱交換部５に近い位置に形成されている。コーン１６の高さは、熱交換部５とコーン１６との隙間距離に対して比率１以下となっている。この比率によって、伝熱板１，２を真空成形で成形した場合に、素材が薄くなりすぎて孔があくことを防ぐことができる。 　As shown in Figs. 4 and 5, the cones 16 are formed on the strip-shaped plane portions 26, 28, 35, 37 of the heat transfer plates 1, 2. A plurality of cones 16 are formed for each of the belt-shaped plane portions 26 , 28 , 35 , 37 . The cones 16 are formed at positions dividing the lengths of the strip-shaped plane portions 26, 28, 35, 37 at equal intervals. The cone 16 is formed at a position closer to the heat exchanging portion 5 than the widthwise center of each of the flat strip portions 26 , 28 , 35 , 37 . The height of the cone 16 has a ratio of 1 or less to the gap distance between the heat exchanging portion 5 and the cone 16 . With this ratio, when the heat transfer plates 1 and 2 are formed by vacuum forming, it is possible to prevent the material from becoming too thin and forming holes.
　図９および図１０に示すようにコーン１６は、上方に向けて凸となる第１の凸部である。コーン１６は、先端が曲面となる円錐状で形成されている。 　As shown in Figs. 9 and 10, the cone 16 is a first convex part that is convex upward. The cone 16 is formed in a conical shape with a curved tip.
　伝熱板１，２を積層したときに、帯状平面部２１は下方の帯状平面部３１と当接する。帯状平面部２２は上方の帯状平面部３２と当接する。帯状平面部２３は下方の帯状平面部３３と当接する。帯状平面部２４は上方の帯状平面部３４と当接する。帯状平面部２５は下方の帯状平面部３５と当接する。帯状平面部２６は上方の帯状平面部３６と当接する。帯状平面部２７は下方の帯状平面部３７と当接する。帯状平面部２８は上方の帯状平面部３８と当接する。後に詳説するが、当接した帯状平面部２１，２２，２３，２４，２５，２６，２７，２８，３１，３２，３３，３４，３５，３６，３７，３８同士は、超音波溶着によって接合される接合縁部となる。 When the heat transfer plates 1 and 2 are stacked, the flat strip portion 21 contacts the flat strip portion 31 below. The flat strip portion 22 abuts on the flat strip portion 32 above. The flat strip portion 23 contacts the flat strip portion 33 below. The flat strip portion 24 abuts on the flat strip portion 34 above. The flat strip portion 25 contacts the flat strip portion 35 below. The flat strip portion 26 abuts on the flat strip portion 36 above. The flat strip portion 27 abuts on the flat strip portion 37 below. The flat strip portion 28 contacts the flat strip portion 38 above. As will be described in detail later, the contacting flat strips 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 37, and 38 are joined by ultrasonic welding. It becomes the joint edge that is connected.
　コーンカバー１５とコーン１６とは、伝熱板１，２を積層したときに平面視において互いに重なる位置に形成されている。図９および図１０に示すように伝熱板１，２を積層したときに、コーン１６がコーンカバー１５の凹部に嵌まる。なお、コーンカバー１５の凹部が下方に凹んでおり、コーン１６が下方に凸となっていてもよい。 The cone cover 15 and the cone 16 are formed at positions that overlap each other in plan view when the heat transfer plates 1 and 2 are laminated. When the heat transfer plates 1 and 2 are stacked as shown in FIGS. 9 and 10, the cone 16 fits into the recess of the cone cover 15. As shown in FIG. In addition, the concave portion of the cone cover 15 may be concaved downward, and the cone 16 may be convex downward.
　次に、熱交換素子の製造工程について説明する。図１１は、実施の形態１にかかる熱交換素子の製造装置の概略構成を示す図である。製造装置は、伝熱板１，２を置くための受け台１７を備えている。受け台１７には伝熱板１，２を吸着などの方法で保持する機能の他、突起１３と同じ位置となる箇所に位置決めのための穴（図示を省略）が設けられている。さらに製造装置の上方には突起１３と同じ位置となる箇所にガイドピン１８とガイドピン１９を備えている。図１２は、図１１に示したガイドピンが突起に嵌まった状態を示す斜視断面図である。ガイドピン１８は上下に移動可能となっており、下方に移動することで図１２に示すようにその先端が突起１３の裏面の凹みに差し込まれる。これは、ガイドピン１９も同様である。 Next, the manufacturing process of the heat exchange element will be explained. FIG. 11 is a diagram showing a schematic configuration of a heat exchange element manufacturing apparatus according to the first embodiment. The manufacturing apparatus includes a cradle 17 on which the heat transfer plates 1 and 2 are placed. The cradle 17 has a function of holding the heat transfer plates 1 and 2 by means of adsorption or the like, and also has holes (not shown) for positioning at the same positions as the projections 13 . Furthermore, guide pins 18 and 19 are provided at the same positions as the projections 13 above the manufacturing apparatus. FIG. 12 is a perspective cross-sectional view showing a state in which the guide pin shown in FIG. 11 is fitted in the protrusion. The guide pin 18 is vertically movable, and by moving downward, the tip thereof is inserted into the recess on the back surface of the projection 13 as shown in FIG. This is the same for the guide pin 19 as well.
　熱交換素子５０の製造工程では、第１の伝熱板１と第２の伝熱板２の積層と固定が繰り返される。図１３から図１６は、実施の形態１にかかる熱交換素子の製造工程を示す図である。 In the manufacturing process of the heat exchange element 50, the lamination and fixing of the first heat transfer plate 1 and the second heat transfer plate 2 are repeated. 13 to 16 are diagrams showing manufacturing steps of the heat exchange element according to the first embodiment.
　熱交換素子５０の製造工程では、図１３に示すように、まず、積層の１枚目となる第１の伝熱板１を受け台１７に置く、このとき、突起１３を受け台１７の穴に合せることで、突起１３が受け台１７の穴に嵌って位置決めがなされる。 In the manufacturing process of the heat exchange element 50, as shown in FIG. , the protrusion 13 fits into the hole of the receiving base 17 and is positioned.
　次に、図１４に示すように、ガイドピン１８の先端を、次に積層する第２の伝熱板２の突起１３の裏面の凹部に嵌めてから、図１５に示すように、第２の伝熱板２を積層する。こうすることで、上層、下層のどちらの伝熱板１，２も製造装置によって位置決めされた状態で、当接している帯状平面部２２，２４，２６，２８，３２，３４，３６，３８同士を超音波溶着で固定する。次に、図１６に示すように、次に積層する第１の伝熱板１に対してガイドピン１９を用いて位置決めしながら積層する。このように、第１の伝熱板１と第２の伝熱板２との積層と固定を交互に繰り返して任意の高さまで積層する。製造工程の説明で分かるように、ガイドピン１８は第２の伝熱板２の位置決めに用いられ、ガイドピン１９は第１の伝熱板１の位置決めに用いられる。 Next, as shown in FIG. 14, the tips of the guide pins 18 are fitted into the recesses on the rear surface of the protrusions 13 of the second heat transfer plate 2 to be laminated next, and then, as shown in FIG. The heat transfer plates 2 are laminated. By doing so, the belt- like plane portions 22, 24, 26, 28, 32, 34, 36, and 38 that are in contact with each other are arranged in a state in which both the upper and lower heat transfer plates 1 and 2 are positioned by the manufacturing apparatus. is fixed by ultrasonic welding. Next, as shown in FIG. 16, the first heat transfer plate 1 to be laminated next is laminated while being positioned using guide pins 19 . In this way, the lamination and fixing of the first heat transfer plate 1 and the second heat transfer plate 2 are alternately repeated to stack them up to an arbitrary height. As can be seen from the description of the manufacturing process, the guide pins 18 are used for positioning the second heat transfer plate 2 and the guide pins 19 are used for positioning the first heat transfer plate 1 .
　また、ガイドピン１８，１９の先端が突起１３の裏面の凹部に嵌まって、上層の伝熱板１，２を下方の伝熱板１，２に押し当てていることで、突起１３が嵌まった台座１４の平面部と、ヘッダ部６ａ，６ｂ，６ｃ，６ｄのうち台座１４の平面部に当接する領域との間に摩擦抵抗が発生する。これにより、超音波溶着の確実性が向上し、歩留まりが向上する。 Also, the tips of the guide pins 18 and 19 are fitted into the concave portions on the back surface of the protrusion 13, and the upper heat transfer plates 1 and 2 are pressed against the lower heat transfer plates 1 and 2, so that the protrusion 13 is fitted. Frictional resistance is generated between the flat portion of the pedestal 14 and the areas of the header portions 6a, 6b, 6c, 6d that contact the flat portion of the pedestal 14. As shown in FIG. This improves the reliability of ultrasonic welding and improves the yield.
　以上に示した熱交換素子５０によれば、伝熱板１，２に形成された突起１３、台座１４、コーンカバー１５、コーン１６によって、積層された状態での位置ずれが発生しにくくなる。したがって、伝熱板１，２に振動を与える超音波溶着によっても伝熱板１，２に位置ずれが発生しにくくなる。また、伝熱板１，２を重ねるだけで、突起１３が台座１４の凹み１４ａに嵌まり、コーン１６がコーンカバー１５に嵌まるので、位置決めを正確かつ容易に行うことができる。また、突起１３が台座１４の凹み１４ａにきつく嵌まり、コーン１６がコーンカバー１５にきつく嵌まるようにすれば、より一層位置ずれを生じにくくすることができる。また、伝熱板１，２は、成型後にその中心に向かって収縮する。凹み１４ａが平面視において伝熱板１，２の中心に向かう方向を長手方向とする長穴形状となっていることで、伝熱板１，２の中心に向かった収縮によって台座１４の位置が変位した場合であっても、突起１３が凹み１４ａに嵌まりやすくなっている。また、突起１３が凹み１４ａとの当接により、伝熱板１，２の中心に向かう方向と異なる方向への伝熱板１，２同士のずれが防がれるので、位置決め精度の向上も図られる。 According to the heat exchange element 50 described above, the protrusions 13, the pedestal 14, the cone cover 15, and the cone 16 formed on the heat transfer plates 1 and 2 make it difficult for misalignment to occur in the stacked state. Therefore, the heat transfer plates 1 and 2 are less likely to be misaligned even by ultrasonic welding that vibrates the heat transfer plates 1 and 2 . Further, simply by stacking the heat transfer plates 1 and 2, the protrusions 13 are fitted into the recesses 14a of the pedestal 14, and the cones 16 are fitted into the cone cover 15, so that positioning can be performed accurately and easily. Further, if the projection 13 is tightly fitted in the recess 14a of the base 14 and the cone 16 is tightly fitted in the cone cover 15, it is possible to further prevent misalignment. Moreover, the heat transfer plates 1 and 2 shrink toward the center after molding. Since the recess 14a has an elongated hole shape whose longitudinal direction is the direction toward the center of the heat transfer plates 1 and 2 in plan view, the position of the pedestal 14 is shifted by the contraction toward the center of the heat transfer plates 1 and 2. Even if it is displaced, the projection 13 is easily fitted into the recess 14a. Further, since the heat transfer plates 1 and 2 are prevented from being displaced in a direction different from the direction toward the center of the heat transfer plates 1 and 2 due to the contact between the protrusions 13 and the recesses 14a, the positioning accuracy can be improved. be done.
　また、突起１３と台座１４は、ヘッダ部６ａ，６ｂ，６ｃ，６ｄの領域内にあっても帯状平面部２２，２４，３１，３３に近い位置にあり、コーンカバー１５とコーン１６も帯状平面部２５，２６，２７，２８，３５，３６，３７，３８にあるので、超音波溶着によって伝熱板１，２をずらそうとする力が働いても伝熱板１，２に生じる曲げ応力は短い距離の範囲に留まるので伝熱板がたわむ状態になり難くすることができる。 Moreover, the projection 13 and the base 14 are located near the belt- like plane portions 22, 24, 31, and 33 even within the areas of the header portions 6a, 6b, 6c, and 6d. Since it is in the parts 25, 26, 27, 28, 35, 36, 37, 38, even if a force to shift the heat transfer plates 1, 2 by ultrasonic welding acts, the bending stress generated in the heat transfer plates 1, 2 stays within a short distance, it is possible to make it difficult for the heat transfer plate to bend.
　また、突起１３、台座１４、コーンカバー１５、およびコーン１６は各帯状平面部２１，２２，２３，２４，２５，２６，２７，２８，３１，３２，３３，３４，３５，３６，３７，３８に対して複数形成されていることによって、より一層位置ずれが生じにくくなる。 Moreover, the protrusion 13, the pedestal 14, the cone cover 15, and the cone 16 each have a belt- like plane portion 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 37, By forming a plurality of grooves with respect to 38, it becomes even more difficult for misalignment to occur.
　また、突起１３が先細り形状であること、コーンカバー１５が円錐状であること、コーン１６が円錐状であることから、伝熱板１，２同士または伝熱板と製造装置との位置決めの際に芯出しがしやすくなり、伝熱板１，２同士の位置決めを容易に行なうことができる。 In addition, since the protrusion 13 is tapered, the cone cover 15 is conical, and the cone 16 is conical, the positioning of the heat transfer plates 1 and 2 or between the heat transfer plates and the manufacturing apparatus Centering becomes easy, and the positioning of the heat transfer plates 1 and 2 can be easily performed.
　また、正確に位置決めされた状態で超音波溶着を行うことで、溶着される範囲が他の範囲に及んでしまったり、溶着不良となる箇所が発生したりしにくくなる。これにより、余分な溶着による目詰まり、および熱交換素子５０からの空気の漏れを防ぐことができる。 In addition, by performing ultrasonic welding in a state of being accurately positioned, it is less likely that the welded range will extend to other areas or that defective welding will occur. As a result, clogging due to excess welding and air leakage from the heat exchange element 50 can be prevented.
　また、台座１４がひし形の２本の対角線のうち長いほうの対角線を空気の流れ方向に沿わせて設けられていること、台座１４の頂部が隣接する伝熱板１，２に当接していることから、台座１４が空気の流れの妨げになりにくい。また、台座１４と帯状平面部２２，２４，３１，３３との間に空隙を設けることで、空隙を設けない場合に比べて台座１４および辺１ｄ，１ｆ，２ｃ，２ｅの周辺の風の流れの乱れを少なくでき圧力損失の発生を抑制できる。また、台座１４を空気の流れ方向に直線状に配置することで同様に流れの乱れを少なくでき、圧力損失の発生を抑制できる。また、台座１４と辺１ｄ，１ｆ，２ｃ，２ｅとを空隙を挟んで極力近傍に配置することで、溶着点と台座１４との距離が極力短くなり、溶着時に位置決めをより効果的にできる。 In addition, the base 14 is provided so that the longer diagonal of the two diagonals of the rhombus is aligned with the direction of air flow, and the top of the base 14 is in contact with the adjacent heat transfer plates 1 and 2. Therefore, the pedestal 14 is less likely to obstruct the flow of air. In addition, by providing gaps between the base 14 and the belt-shaped plane portions 22, 24, 31, and 33, the flow of air around the base 14 and the sides 1d, 1f, 2c, and 2e is reduced compared to the case where no gap is provided. turbulence can be reduced, and the occurrence of pressure loss can be suppressed. Further, by arranging the pedestals 14 linearly in the air flow direction, it is possible to similarly reduce turbulence in the air flow and suppress the occurrence of pressure loss. By arranging the pedestal 14 and the sides 1d, 1f, 2c and 2e as close to each other as possible with a gap therebetween, the distance between the welding point and the pedestal 14 becomes as short as possible, and positioning during welding can be made more effective.
　また、台座１４をヘッダ部６ａ，６ｂ，６ｃ，６ｄに設けているので、帯状平面部２１，２２，２３，２４，３１，３２，３３，３４に台座１４を設ける場合に比べて帯状平面部２１，２２，２３，２４，３１，３２，３３，３４の幅を狭くすることができる。同じサイズの伝熱板１，２であれば帯状平面部２１，２２，２３，２４，３１，３２，３３，３４の幅が狭いほうがヘッダ部６ａ，６ｂ，６ｃ，６ｄを広くすることができる。台座１４が流路に設けられることになるものの、ヘッダ部６ａ，６ｂ，６ｃ，６ｄが広くなることで、帯状平面部２１，２２，２３，２４，３１，３２，３３，３４に台座１４を設けた場合よりも熱交換素子５０の圧力損失を低くすることができる。 Moreover, since the bases 14 are provided on the header portions 6a, 6b, 6c, and 6d, the bases 14 are provided on the flat strip portions 21, 22, 23, 24, 31, 32, 33, and 34, respectively. The width of 21, 22, 23, 24, 31, 32, 33, 34 can be narrowed. If the heat transfer plates 1 and 2 are of the same size, the narrower the width of the flat strip portions 21, 22, 23, 24, 31, 32, 33, 34, the wider the header portions 6a, 6b, 6c, 6d. . Although the pedestal 14 is provided in the flow path, the pedestal 14 can be attached to the strip-shaped plane portions 21, 22, 23, 24, 31, 32, 33, and 34 by widening the header portions 6a, 6b, 6c, and 6d. The pressure loss of the heat exchange element 50 can be made lower than when it is provided.
　以上の実施の形態に示した構成は、本開示の内容の一例を示すものである。実施の形態の構成は、別の公知の技術と組み合わせることが可能である。本開示の要旨を逸脱しない範囲で、実施の形態の構成の一部を省略または変更することが可能である。 The configuration shown in the above embodiment shows an example of the content of the present disclosure. The configuration of the embodiment can be combined with another known technique. A part of the configuration of the embodiment can be omitted or changed without departing from the gist of the present disclosure.
　１　第１の伝熱板、１ａ，１ｂ，１ｃ，１ｄ，１ｅ，１ｆ　辺、２　第２の伝熱板、２ａ，２ｂ，２ｃ，２ｄ，２ｅ，２ｆ　辺、３，４　風路、５　熱交換部、６ａ　第１のヘッダ部、６ｂ　第２のヘッダ部、６ｃ　第３のヘッダ部、６ｄ　第４のヘッダ部、８　リブ、１３　突起、１４　台座、１４ａ　凹み、１５　コーンカバー、１６　コーン、１７　受け台、１８，１９　ガイドピン、２１，２２，２３，２４，２５，２６，２７，２８，３１，３２，３３，３４，３５，３６，３７，３８　帯状平面部、４１，４２，４３，４４，５１，５２，５３，５４　段差、５０　熱交換素子、６１　第１の流入面、６２　第２の流入面、７１　第１の流出面、７２　第２の流出面。 1 first heat transfer plate, 1a, 1b, 1c, 1d, 1e, 1f side, 2 second heat transfer plate, 2a, 2b, 2c, 2d, 2e, 2f side, 3, 4 air passage, 5 heat replacement part, 6a first header part, 6b second header part, 6c third header part, 6d fourth header part, 8 rib, 13 projection, 14 base, 14a recess, 15 cone cover, 16 cone, 17 Cradle, 18, 19 Guide pin, 21, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 37, 38 Belt-shaped plane part, 41, 42, 43 , 44, 51, 52, 53, 54 steps, 50 heat exchange elements, 61 first inflow surface, 62 second inflow surface, 71 first outflow surface, 72 second outflow surface.

Claims (7)

  1. 　複数の伝熱板が積層されて形成された熱交換素子であって、
    　前記伝熱板は、複数の前記伝熱板の積層方向の一方側を通過する空気と前記積層方向の他方側を通る空気とを互いに対向する方向で通過させて熱交換させる熱交換部と、前記積層方向に沿って見て前記熱交換部を挟んで一方側と他方側とに設けられたヘッダ部と、前記熱交換部のうち前記ヘッダ部と接しない辺に沿って設けられた接合縁部と、を有し、
    　積層された複数の前記伝熱板が有する前記接合縁部同士は、互いに接触して超音波溶着によって接合されており、
    　前記接合縁部には、前記積層方向に沿って凸となる第１の凸部と、隣接する前記伝熱板の前記第１の凸部が嵌まる凹部とが形成されていることを特徴とする熱交換素子。     A heat exchange element formed by stacking a plurality of heat transfer plates,
    The heat exchanger plate includes a heat exchange unit that allows air passing through one side of the plurality of heat exchanger plates in the stacking direction and air passing through the other side of the heat exchanger plate to pass in opposite directions to exchange heat; Header portions provided on one side and the other side of the heat exchange portion when viewed along the stacking direction, and a joint edge provided along a side of the heat exchange portion not in contact with the header portion. and
    The joint edges of the plurality of stacked heat transfer plates are in contact with each other and are joined by ultrasonic welding,
    The joint edge is formed with a first convex portion that protrudes along the stacking direction and a concave portion into which the first convex portion of the adjacent heat transfer plate is fitted. heat exchange element.
  2. 　前記ヘッダ部には、前記積層方向に沿って凸となり、その頂部に凹みが形成された台座と、隣接する前記伝熱板の前記凹みに嵌まる第２の凸部とが形成されていることを特徴とする請求項１に記載の熱交換素子。 The header portion is formed with a pedestal that protrudes along the stacking direction and has a recess formed at the top thereof, and a second protrusion that fits into the recess of the adjacent heat transfer plate. The heat exchange element according to claim 1, characterized by:
  3. 　前記台座の頂部には平面領域が設けられており、隣接する前記伝熱板に前記平面領域が当接することを特徴とする請求項２に記載の熱交換素子。 The heat exchange element according to claim 2, wherein a flat area is provided on the top of the pedestal, and the flat area abuts on the adjacent heat transfer plate.
  4. 　前記伝熱板は前記積層方向に沿って見て六角形形状であり、
    　前記第１の凸部および前記台座は前記六角形形状のいずれかの辺に沿って設けられており、
    　前記第１の凸部および前記台座は、前記第１の凸部および前記台座が沿う辺に対して複数形成されていることを特徴とする請求項２または３に記載の熱交換素子。     The heat transfer plate has a hexagonal shape when viewed along the stacking direction,
    The first convex portion and the pedestal are provided along one side of the hexagonal shape,
    4. The heat exchange element according to claim 2, wherein a plurality of said first protrusions and said pedestals are formed along a side along which said first protrusions and said pedestals are formed.
  5. 　複数の前記第１の凸部および前記台座は、前記第１の凸部および前記台座が沿う辺の長さを等間隔に分ける位置に設けられていることを特徴とする請求項４に記載の熱交換素子。 5. The method according to claim 4, wherein the plurality of first protrusions and the pedestals are provided at positions that divide the length of the side along which the first protrusions and the pedestals are aligned at equal intervals. heat exchange element.
  6. 　前記台座は、前記積層方向に沿って見てひし形の形状であり、２本の対角線のうち長いほうの対角線を、前記ヘッダ部を通過する空気の流れ方向に沿わせて形成されていることを特徴とする請求項２から５のいずれか１つに記載の熱交換素子。 The pedestal has a rhombic shape when viewed along the stacking direction, and is formed such that the longer diagonal of two diagonals is aligned with the flow direction of the air passing through the header section. 6. The heat exchange element according to any one of claims 2 to 5.
  7. 　前記第１の凸部の高さは、前記第１の凸部の根元での直径に対する比率が１以下であることを特徴とする請求項１から６のいずれか１つに記載の熱交換素子。 7. The heat exchange element according to any one of claims 1 to 6, wherein the ratio of the height of the first protrusion to the diameter at the root of the first protrusion is 1 or less. .
PCT/JP2021/026095 2021-07-12 2021-07-12 Heat exchange element WO2023286110A1 (en)

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EP21950054.3A EP4372304A4 (en) 2021-07-12 2021-07-12 Heat exchange element
CN202180100277.XA CN117651841A (en) 2021-07-12 2021-07-12 Heat exchange element
CA3226203A CA3226203A1 (en) 2021-07-12 2021-07-12 Heat exchange element
PCT/JP2021/026095 WO2023286110A1 (en) 2021-07-12 2021-07-12 Heat exchange element
US18/559,975 US20240240880A1 (en) 2021-07-12 2021-07-12 Heat exchange element
JP2023534435A JPWO2023286110A1 (en) 2021-07-12 2021-07-12

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JP2004003824A (en) * 2002-03-28 2004-01-08 Matsushita Ecology Systems Co Ltd Heat exchanger
JP2004293862A (en) 2003-03-26 2004-10-21 Matsushita Electric Ind Co Ltd Heat exchanger
JP2007285691A (en) * 2006-03-22 2007-11-01 Matsushita Electric Ind Co Ltd Heat exchanger
JP2008107071A (en) * 2006-09-28 2008-05-08 Matsushita Electric Ind Co Ltd Heat exchanging element

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KR100724225B1 (en) * 2005-11-30 2007-05-31 마쓰시타 에코시스테무즈 가부시키가이샤 Heat exchanger
KR100783599B1 (en) * 2007-03-09 2007-12-07 충남대학교산학협력단 Heat exchanger for ventilation system
CN102183077A (en) * 2011-01-30 2011-09-14 霍尼韦尔（中国）有限公司 Energy recovery device

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Publication number Priority date Publication date Assignee Title
JP2004003824A (en) * 2002-03-28 2004-01-08 Matsushita Ecology Systems Co Ltd Heat exchanger
JP2004293862A (en) 2003-03-26 2004-10-21 Matsushita Electric Ind Co Ltd Heat exchanger
JP2007285691A (en) * 2006-03-22 2007-11-01 Matsushita Electric Ind Co Ltd Heat exchanger
JP2008107071A (en) * 2006-09-28 2008-05-08 Matsushita Electric Ind Co Ltd Heat exchanging element

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Title
See also references of EP4372304A4

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EP4372304A1 (en) 2024-05-22
EP4372304A4 (en) 2024-08-21

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