WO2022107868A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2022107868A1
WO2022107868A1 PCT/JP2021/042509 JP2021042509W WO2022107868A1 WO 2022107868 A1 WO2022107868 A1 WO 2022107868A1 JP 2021042509 W JP2021042509 W JP 2021042509W WO 2022107868 A1 WO2022107868 A1 WO 2022107868A1
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plate
vertical
plates
flow path
heat exchanger
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PCT/JP2021/042509
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French (fr)
Japanese (ja)
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周平 松坂
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株式会社ティラド
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Priority to JP2022563836A priority Critical patent/JPWO2022107868A1/ja
Publication of WO2022107868A1 publication Critical patent/WO2022107868A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins

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  • cup-shaped plates are laminated to form a first flow path and a second flow path alternately every other plate, and heat exchange is performed between the two fluids.
  • the exchanger Regarding the exchanger.
  • FIGS. 4 (A) and 4 (B) The structure of the oil cooler described in Patent Document 1 below is shown in FIGS. 4 (A) and 4 (B).
  • the oil cooler is formed in a cup shape in which the outer periphery of each of the plates 2a and 3a is formed with a stepped portion including vertical portions 7a and 9a and inclined portions 6a and 8a. Then, the vertical portions 7a and 9a of the first plate 2a and the second plate 3a and the inclined portions 6a and 8a were joined to each other and laminated to form flow paths 4a and 5a between the plates 2a and 3a. It is a thing.
  • the convex portion 11a protrudes from the base plane 1a of one of the opposing first plates 2a, and the convex portion 11a is joined to the base plane 1a of the other second plate 3a. ing.
  • the convex portion 11a is formed on the base plane 1a of one of the first plates 2a as shown in FIG. 4, and the convex portion 11a is formed. Is to be joined to the other second plate 3a, it is necessary to form a convex portion 11a having a high height. However, it is difficult to form a convex portion 11a having a high height from the viewpoint of molding processability. Therefore, in the flow paths 4a and 5a having a high flow path, it is necessary to form convex portions 11a on both of the opposing plates 2a and 3a and to join the tops of the opposing convex portions 11a to each other.
  • the height of the flow path is defined by the "stepped portion on the outer periphery of each plate 2a and 3a", but it is difficult to form the height of the facing convex portion 11a according to the stepped portion.
  • FIG. 5 shows the problems caused by it. That is, when the height of the opposing convex portions 11a is formed low, a gap S is formed between the opposing convex portions 11a as shown in FIG. 5A. In this case, since there is a possibility that their joining may be defective, the convex portion 11a is formed so as not to be lowered in height. However, by forming in this way, as shown in FIG.
  • the present invention according to claim 1 is a cup-shaped first plate in which an aluminum material or an aluminum alloy plate material is raised with respect to the entire peripheral edge of the base plane 1 as a whole and inclined outward from the center thereof. 2 and the second plate 3 are alternately laminated with an interval in the thickness direction, and the first flow path 4 and the second flow path 5 are alternately formed between the plates in the stacking direction.
  • the first plate 2 has an inclined portion 6 that is inclined outward at an acute angle with respect to the perpendicular line L erected from the peripheral edge of the base plane 1, and stands substantially parallel to the perpendicular line L from the edge of the inclined portion 6.
  • the raised vertical portion 7 and the inclined portion 6 raised from the edge of the vertical portion 7 at an acute angle outward with respect to the perpendicular line L.
  • the second plate 3 has a vertical portion 9 raised substantially parallel to the perpendicular line L from the peripheral edge of the base plane 1, and an inclined portion 8 raised at an acute angle outward from the peripheral edge of the vertical portion 9.
  • a vertical portion 9 raised substantially parallel to the perpendicular line L from the edge of the inclined portion 8 is provided.
  • the inclined portion 6 and the vertical portion 7 of the first plate 2, and the inclined portion 8 and the vertical portion 9 of the second plate 3 are formed at obtuse angles, respectively, and each of the plates 2 and 3 is formed in a stepped cup shape.
  • the vertical portions 7 and 9 of the first plate 2 and the second plate 3 and the inclined portions 6 and 8 are aligned with each other.
  • a large number of convex portions 11 having a dome-shaped cross section are formed on the opposite surface sides of the first plate 2 and the second plate 3 of the second flow path 5, and the tops of the convex portions 11 are in contact with each other.
  • Each contact part of each plate is brazed and joined,
  • the heat is characterized in that the plate thickness of the plate material is 0.4 mm to 1.0 mm, the diameter D of the convex portion 11 is 2 mm to 9 mm, and the height of the second flow path 5 is 0.8 mm to 2.6 mm. It is an exchanger.
  • the present invention according to claim 2 is the heat exchanger according to claim 1.
  • a gap is formed between the inclined portion 6 of the first plate 2 and the inclined portion 8 of the second plate in a free state when the plates are laminated. It is a heat exchanger configured so that the convex portions 11 come into contact with each other by eliminating the gap when each plate is compressed in the thickness direction.
  • the plate thickness of the plate material is 0.4 mm to 1.0 mm
  • the diameter D of the convex portion 11 is 2 mm to 9 mm
  • the height of the second flow path 5 is 0.8 mm.
  • the invention according to claim 2 has a gap between the inclined portion 6 of the first plate 2 and the inclined portion 6 of the second plate 3 in a free state when the plates 2 and 3 are laminated. When each plate is compressed in the thickness direction, the gap is eliminated so that the convex portions 11 come into contact with each other. As a result, when the plates are compressed in the thickness direction in the temporary fixing before brazing, the convex portions 11 are surely in contact with each other, so that they can be surely brazed.
  • FIG. 1A and 1B are heat exchangers of the present invention
  • FIG. 1A is a cross-sectional view taken along line I-I of FIG. 2
  • FIG. 1B is an enlarged view of part B of FIG. 1A
  • 2A and 2B are a plan view (A) and a front view (B) of the heat exchanger
  • 3A and 3B are a plan view (A) and a front view (B) of the second plate 3 used in the heat exchanger
  • FIGS. 3C and 3D are a plan view (C) and a front view (D) of the first plate 2.
  • FIG. 4 is a vertical cross-sectional view (A) of the conventional heat exchanger
  • FIG. 4 (B) is an enlarged view of part B of FIG. 4 (A).
  • FIG. 5 is an explanatory diagram showing a problem of a heat exchanger in which a convex portion 11a is formed on each of the plates 2 and 3.
  • FIG. 1 (A) is a vertical sectional view thereof
  • FIG. 1 (B) is an enlarged view of part B of FIG. 1 (A)
  • FIG. 2 is a plan view thereof.
  • A), front view (B), and FIG. 3 are a plan view (A) and a front view (B) of the second plate 3 constituting the heat exchanger, and a plan view (C) and a front view of the first plate 2. (D).
  • This heat exchanger is made of a press-formed body of an aluminum material or an aluminum alloy plate material, and is a cup-shaped first plate 2 that is stepped from the center to the outside with respect to the entire peripheral edge of the base plane 1 as a whole.
  • the second plate 3 are alternately laminated with an interval in the thickness direction, and are formed alternately between the plates in the stacking direction of the first flow path 4 and the second flow path 5.
  • the first plate 2 has an inclined portion 6 raised with an acute angle outward with respect to a perpendicular line L erected from the peripheral edge of the base plane 1, and an inclined portion 6 thereof.
  • the vertical portion 7 raised substantially parallel to the vertical line L from the edge, and an inclined portion 6 raised from the edge of the vertical portion 7 at an acute angle outward with respect to the vertical line L.
  • the inclined portion 6 and the vertical portion 7 of the first plate 2 are formed in the reverse order of formation, and the vertical portion 9 is raised substantially parallel to the perpendicular line L from the peripheral edge of the base plane 1.
  • a vertical portion 8 is provided on the peripheral edge of the vertical portion 9 so as to be inclined outward at a sharp angle, and a vertical portion 9 which is raised substantially parallel to the vertical line L from the edge of the inclined portion 8. .
  • the inclined portion 6 and the vertical portion 7 of the first plate 2 and the inclined portion 8 and the vertical portion 9 of the second plate 3 are each bent at an obtuse angle, and each of the plates 2 and 3 is formed in a stepped cup shape. ing.
  • the vertical portions 7 of the first plate 2 and the vertical portions 9 of the second plate 3 are aligned with each other, and the inclined portions 6 of the first plate 2 and the inclined portions 8 of the second plate 3 are aligned with each other.
  • Each plate 2, 3 is connected.
  • the inner fin 10 is interposed in the first flow path 4. Further, a large number of convex portions 11 are formed on the base plane 1 of the first plate 2 and the second plate 3.
  • the second plate 3 has a large number of protrusions 11 projecting on the second flow path 5 side of the base plane 1, and the first plate 2 has a large number of protrusions on the second flow path 5 side of the base plane 1.
  • the part 11 is projected.
  • the forming position of the convex portion 11 of the first plate 2 and the forming position of the convex portion 11 of the second plate 3 are arranged so as to be substantially aligned with each other.
  • the entrance / exit 16 of the base plate 14 communicates with the first flow path 4 side
  • the pipe 15 communicates with the second flow path 5 side.
  • the fluid to be cooled flows in from the inlet / outlet 16 of the base plate 14, and the refrigerant flows in from the pipe 15. Then, heat exchange is performed between the refrigerant and the fluid to be cooled.
  • the feature of the heat exchanger of the present invention is that the top of the convex portion 11 formed on the base plane 1 of the first plate 2 and the top of the convex portion 11 formed on the base plane 1 of the second plate 3 come into contact with each other. , The second flow path 5 is formed. As shown in FIG. 1B, these convex portions 11 have a dome-shaped cross section.
  • the plate thickness of the plate material of the first plate 2 and the second plate 3 is formed to be 0.4 mm to 1.0 mm.
  • the diameter D of the convex portion 11 formed on the base plane 1 of the first plate 2 and the second plate 3 is formed to be 2 mm to 9 mm.
  • the height of the second flow path 5 is formed to be 0.8 mm to 2.6 mm.
  • each convex portion 11 formed on each of the plates 2 and 3 is preferably approximately half the height of the second flow path 5 (0.4 mm to 1.3 mm). As the inclination angle of the inclined portion 6 of the first plate 2 and the inclination angle of the inclined portion 8 of the second plate 3, an optimum inclination angle can be appropriately adopted.
  • the present invention is mainly a caseless heat exchanger and can be used for an oil cooler or the like.
  • Base plane 2 1st plate 3 2nd plate 4 1st flow path 5 2nd flow path 6 Inclined part 7 Vertical part 8 Inclined part 9 Vertical part 10 Inner fin 11 Convex part 12 Bottom plate 13 Top plate 14 Base plate 15 Pipe 16 Doorway S Gap N Deformation part L Perpendicular line D Diameter of convex part 11

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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

Provided is a heat exchanger obtained by laminating cup-shaped plates having on the outer periphery thereof a stepped surface wherein, when a first flow passage and a second flow passage are formed, dome-shaped protrusions protruding toward the interior of the second flow passage are formed from each of the plates which oppose each other with the second flow passage sandwiched therebetween, and these protrusions are joined to each other, deformation of the base surface of each plate is prevented while ensuring formability of the protrusions.　A plurality of protrusions (11) having a dome-shaped cross section are formed in the respective opposing surfaces of a first plate (2) and a second plate (3) of a second flow passage (5), the apexes of the protrusions (11) are brought into contact with each other, the contact portions of those plates are joined by brazing, the plate thickness of the plate material of the plates (2, 3) is set to 0.4 mm to 1.0 mm, the diameter (D) of the protrusions (11) formed on the base surface (1) of the plates (2, 3) is 2 mm to 9 mm, and the height of the second flow passage (5) is formed at 0.8 mm to 2.6 mm.

Description

熱交換器Heat exchanger
　本発明は、カップ状のプレートを積層して各プレートの１枚置きに第１流路と第２流路とを交互に形成し、二つの流体間に熱交換を行わせるプレート積層型の熱交換器に関する。 In the present invention, cup-shaped plates are laminated to form a first flow path and a second flow path alternately every other plate, and heat exchange is performed between the two fluids. Regarding the exchanger.
　下記特許文献１に記載のオイルクーラの構造を、図４（Ａ）、同図（Ｂ）に示す。
　このオイルクーラは、各プレート２ａ、３ａの外周が垂直部７ａ、９ａ及び傾斜部６ａ、８ａからなる段付き部が形成されたカップ状に形成されている。そして、第１プレート２ａと第２プレート３ａとの各垂直部７ａ、９ａどうし及び傾斜部６ａ、８ａどうしが接合され、積層されて各プレート２ａ、３ａ間に流路４ａ、５ａが形成されたものである。
　この例では、図４（Ｂ）に示す如く、対向する一方の第１プレート２ａのベース平面１ａに凸部１１ａが突出し、その凸部１１ａが他方の第２プレート３ａのベース平面１ａに接合されている。 The structure of the oil cooler described in Patent Document 1 below is shown in FIGS. 4 (A) and 4 (B).
The oil cooler is formed in a cup shape in which the outer periphery of each of the plates 2a and 3a is formed with a stepped portion including vertical portions 7a and 9a and inclined portions 6a and 8a. Then, the vertical portions 7a and 9a of the first plate 2a and the second plate 3a and the inclined portions 6a and 8a were joined to each other and laminated to form flow paths 4a and 5a between the plates 2a and 3a. It is a thing.
In this example, as shown in FIG. 4B, the convex portion 11a protrudes from the base plane 1a of one of the opposing first plates 2a, and the convex portion 11a is joined to the base plane 1a of the other second plate 3a. ing.
特開２０１９−７０４７４号公報Japanese Unexamined Patent Publication No. 2019-070474
　ここで、流路の高さが高い流路４ａ、５ａが形成されている場合に、図４のように凸部１１ａを一方の第１プレート２ａのベース平面１ａに形成し、その凸部１１ａを他方の第２プレート３ａに接合しようとすると、高さの高い凸部１１ａを形成する必要がある。
　しかしながら、成形加工性の観点から高さの高い凸部１１ａを形成することは困難である。
　そこで、流路の高さが高い流路４ａ、５ａにおいては、対向するプレート２ａ、３ａの双方に凸部１１ａを形成し、対向する凸部１１ａの頂部どうしを接合する必要がある。
　ここで、当該流路の高さは「各プレート２ａ、３ａの外周の段付き部」で規定されるが、それに合わせて前記対向する凸部１１ａの高さを成形することは困難である。
　図５は、それにより生じる問題点を示している。
　つまり、前記対向する凸部１１ａの高さが低く形成された場合には、図５（Ａ）に示す如く、対向する凸部１１ａどうしの間に隙間Ｓが生じる。この場合、それらの接合が不良となるおそれがあるので、前記凸部１１ａの高さが低くならないように形成することになる。
　しかしながら、そのように形成することにより、図５（Ｂ）に示す如く、対向する凸部１１ａどうしが押し合い、凸部１１ａ周辺の各プレート２ａ、３ａのベース平面１ａが同図中のＮに示すように変形するおそれがある。
　また、当該凸部１１ａ周辺の各プレート２ａ、３ａのベース平面１ａにインナフィン１０ａが設置されていた場合、前記ベース平面１ａの変形により、各プレート２ａ、３ａと当該インナフィン１０ａとの接合が損なわれるおそれがある。
　そこで、本発明は上記問題点を解決する熱交換器を提供することを課題とする。 Here, when the flow paths 4a and 5a having a high flow path are formed, the convex portion 11a is formed on the base plane 1a of one of the first plates 2a as shown in FIG. 4, and the convex portion 11a is formed. Is to be joined to the other second plate 3a, it is necessary to form a convex portion 11a having a high height.
However, it is difficult to form a convex portion 11a having a high height from the viewpoint of molding processability.
Therefore, in the flow paths 4a and 5a having a high flow path, it is necessary to form convex portions 11a on both of the opposing plates 2a and 3a and to join the tops of the opposing convex portions 11a to each other.
Here, the height of the flow path is defined by the "stepped portion on the outer periphery of each plate 2a and 3a", but it is difficult to form the height of the facing convex portion 11a according to the stepped portion.
FIG. 5 shows the problems caused by it.
That is, when the height of the opposing convex portions 11a is formed low, a gap S is formed between the opposing convex portions 11a as shown in FIG. 5A. In this case, since there is a possibility that their joining may be defective, the convex portion 11a is formed so as not to be lowered in height.
However, by forming in this way, as shown in FIG. 5B, the opposing convex portions 11a are pressed against each other, and the base plane 1a of the plates 2a and 3a around the convex portions 11a is shown by N in the figure. There is a risk of deformation.
Further, when the inner fins 10a are installed on the base plane 1a of the plates 2a and 3a around the convex portion 11a, the deformation of the base plane 1a impairs the bonding between the plates 2a and 3a and the inner fins 10a. There is a risk.
Therefore, it is an object of the present invention to provide a heat exchanger that solves the above problems.
　請求項１に記載の本発明は、夫々アルミニウム材またはアルミニウム合金の板材を、ベース平面１の全周縁に対して全体としてその中心から外側に向かって傾斜して立上げたカップ状の第１プレート２と第２プレート３とが、厚み方向に間隔を有して交互に積層し、各プレート間に第１流路４と、第２流路５とが積層方向に交互に形成され、
　第１プレート２は、ベース平面１の周縁から立てた垂線Ｌに対して外側へ鋭角に傾斜して立上げられた傾斜部６と、その傾斜部６の縁から前記垂線Ｌに略平行に立上げられた垂直部７と、その垂直部７の縁から前記垂線Ｌに対して外側に鋭角に傾斜して立ち上げられた傾斜部６と、
　第２プレート３は、ベース平面１の周縁から垂線Ｌに略平行に立上げられた垂直部９と、その垂直部９の周縁に外側へ鋭角に傾斜して立上げられた傾斜部８と、その傾斜部８の縁から前記垂線Ｌに略平行に立ち上げられた垂直部９と、を具備し、
　第１プレート２の傾斜部６及び垂直部７、並びに第２プレート３の傾斜部８及び垂直部９は、夫々鈍角に曲折形成され、各プレート２、３は段付のカップ状に形成され、
　第１プレート２と第２プレート３の各垂直部７、９どうし及び、各傾斜部６、８どうしが整合されており、
　第１流路４にはインナフィン１０が介装されている熱交換器において、
　第２流路５の第１プレート２および第２プレート３には、夫々対向する面側に断面ドーム状の多数の凸部１１が形成されて、各凸部１１の頂部どうしが接して、それら各プレートの各接触部がろう付接合され、
　前記板材の板厚が０．４ｍｍ~１．０ｍｍ、前記凸部１１の直径Ｄが２ｍｍ~９ｍｍ、第２流路５の高さが０．８ｍｍ~２．６ｍｍであることを特徴とする熱交換器である。
　請求項２に記載の本発明は、請求項１に記載の熱交換器において、
　第１プレート２および第２プレート３のろう付接合前、各プレートを積層したときの自由状態で、第１プレート２の前記傾斜部６と第２プレートの前記傾斜部８との間に隙間を有し、厚み方向に各プレートを圧縮したとき、前記隙間をなくして、凸部１１どうしが接触するように構成した熱交換器である。 The present invention according to claim 1 is a cup-shaped first plate in which an aluminum material or an aluminum alloy plate material is raised with respect to the entire peripheral edge of the base plane 1 as a whole and inclined outward from the center thereof. 2 and the second plate 3 are alternately laminated with an interval in the thickness direction, and the first flow path 4 and the second flow path 5 are alternately formed between the plates in the stacking direction.
The first plate 2 has an inclined portion 6 that is inclined outward at an acute angle with respect to the perpendicular line L erected from the peripheral edge of the base plane 1, and stands substantially parallel to the perpendicular line L from the edge of the inclined portion 6. The raised vertical portion 7 and the inclined portion 6 raised from the edge of the vertical portion 7 at an acute angle outward with respect to the perpendicular line L.
The second plate 3 has a vertical portion 9 raised substantially parallel to the perpendicular line L from the peripheral edge of the base plane 1, and an inclined portion 8 raised at an acute angle outward from the peripheral edge of the vertical portion 9. A vertical portion 9 raised substantially parallel to the perpendicular line L from the edge of the inclined portion 8 is provided.
The inclined portion 6 and the vertical portion 7 of the first plate 2, and the inclined portion 8 and the vertical portion 9 of the second plate 3 are formed at obtuse angles, respectively, and each of the plates 2 and 3 is formed in a stepped cup shape.
The vertical portions 7 and 9 of the first plate 2 and the second plate 3 and the inclined portions 6 and 8 are aligned with each other.
In the heat exchanger in which the inner fin 10 is interposed in the first flow path 4,
A large number of convex portions 11 having a dome-shaped cross section are formed on the opposite surface sides of the first plate 2 and the second plate 3 of the second flow path 5, and the tops of the convex portions 11 are in contact with each other. Each contact part of each plate is brazed and joined,
The heat is characterized in that the plate thickness of the plate material is 0.4 mm to 1.0 mm, the diameter D of the convex portion 11 is 2 mm to 9 mm, and the height of the second flow path 5 is 0.8 mm to 2.6 mm. It is an exchanger.
The present invention according to claim 2 is the heat exchanger according to claim 1.
Before brazing joining of the first plate 2 and the second plate 3, a gap is formed between the inclined portion 6 of the first plate 2 and the inclined portion 8 of the second plate in a free state when the plates are laminated. It is a heat exchanger configured so that the convex portions 11 come into contact with each other by eliminating the gap when each plate is compressed in the thickness direction.
　請求項１に記載の熱交換器のように、その板材の板厚を０．４ｍｍ~１．０ｍｍ、凸部１１の直径Ｄを２ｍｍ~９ｍｍ、第２流路５の高さを０．８ｍｍ~２．６ｍｍとしたことにより、凸部１１をプレス加工によって容易に成形することが可能となる。
　また、上記範囲とすることにより、プレス加工により減肉した凸部１１と、減肉のない凸部１１周辺のプレート２、３のベース平面１との剛性比が最適となり、対向する凸部１１どうしが押し合った場合でも、局所的に凸部１１が変形するにとどまるので、凸部１１周辺のプレート２、３のベース平面１の変形が防止される。
　そして、その変形が防止されることによって、当該プレート２、３と第１流路４内のインナフィン１０との接合が損なわれることも防止される。
　請求項２に記載の発明は、各プレート２、３を積層したときの自由状態で、第１プレート２の前記傾斜部６と第２プレート３の前記傾斜部６との間に隙間を有し、厚み方向に各プレートを圧縮したとき、その隙間をなくして、凸部１１どうしを接触するように構成したものである。
　これにより、ろう付前の仮固定において各プレートを厚み方向に圧縮した際に、凸部１１どうしが確実に接触するので、それらを確実にろう付けすることができる。 Like the heat exchanger according to claim 1, the plate thickness of the plate material is 0.4 mm to 1.0 mm, the diameter D of the convex portion 11 is 2 mm to 9 mm, and the height of the second flow path 5 is 0.8 mm. By setting the thickness to ~ 2.6 mm, the convex portion 11 can be easily formed by press working.
Further, by setting the above range, the rigidity ratio between the convex portion 11 thinned by press working and the base plane 1 of the plates 2 and 3 around the convex portion 11 without thinning is optimized, and the convex portions 11 facing each other. Even when they are pressed against each other, the convex portion 11 is only locally deformed, so that the deformation of the base plane 1 of the plates 2 and 3 around the convex portion 11 is prevented.
Further, by preventing the deformation, it is also possible to prevent the joint between the plates 2 and 3 and the inner fin 10 in the first flow path 4 from being impaired.
The invention according to claim 2 has a gap between the inclined portion 6 of the first plate 2 and the inclined portion 6 of the second plate 3 in a free state when the plates 2 and 3 are laminated. When each plate is compressed in the thickness direction, the gap is eliminated so that the convex portions 11 come into contact with each other.
As a result, when the plates are compressed in the thickness direction in the temporary fixing before brazing, the convex portions 11 are surely in contact with each other, so that they can be surely brazed.
　図１は本発明の熱交換器であって、（Ａ）は図２のＩ−Ｉ線横断面図、（Ｂ）は図１（Ａ）のＢ部拡大図。
　図２は同熱交換器の平面図（Ａ）、同正面図（Ｂ）。
　図３は同熱交換器に用いられる第２プレート３の平面図（Ａ）及び正面図（Ｂ）、第１プレート２の平面図（Ｃ）及び正面図（Ｄ）。
　図４は従来型熱交換器の縦断面図（Ａ）、（Ｂ）は図４（Ａ）のＢ部拡大図。
　図５は各プレート２、３のそれぞれに凸部１１ａを形成した熱交換器の問題点を示す説明図。 1A and 1B are heat exchangers of the present invention, FIG. 1A is a cross-sectional view taken along line I-I of FIG. 2, and FIG. 1B is an enlarged view of part B of FIG. 1A.
2A and 2B are a plan view (A) and a front view (B) of the heat exchanger.
3A and 3B are a plan view (A) and a front view (B) of the second plate 3 used in the heat exchanger, and FIGS. 3C and 3D are a plan view (C) and a front view (D) of the first plate 2.
FIG. 4 is a vertical cross-sectional view (A) of the conventional heat exchanger, and FIG. 4 (B) is an enlarged view of part B of FIG. 4 (A).
FIG. 5 is an explanatory diagram showing a problem of a heat exchanger in which a convex portion 11a is formed on each of the plates 2 and 3.
　次に、図面に基づいて本発明の実施の形態を説明する。
　図１~図３は、本発明の熱交換器を示し、図１（Ａ）はその縦断面図、図１（Ｂ）は図１（Ａ）のＢ部拡大図、図２はその平面図（Ａ）及び正面図（Ｂ）、図３は同熱交換器を構成する第２プレート３の平面図（Ａ）及び正面図（Ｂ）、第１プレート２の平面図（Ｃ）及び正面図（Ｄ）である。
　この熱交換器は、アルミニウム材またはアルミニウム合金の板材のプレス成形体からなり、そのベース平面１の全周縁に対して全体として中心から外側に向かって段付に傾斜したカップ状の第１プレート２と第２プレート３とが厚み方向に間隔を有して交互に積層され、各プレート間に第１流路４と第２流路５との積層方向に交互に形成されたものである。
　その第１プレート２は、図１（Ｂ）に示す如く、ベース平面１の周縁から立てた垂線Ｌに対して外側に鋭角に傾斜して立ち上げられた傾斜部６と、その傾斜部６の縁から垂線Ｌに略平行に立ち上げられた垂直部７と、その垂直部７の縁から前記垂線Ｌに対して外側に鋭角に傾斜して立ち上げられた傾斜部６と、を有する。
　また、第２プレート３は、第１プレート２の傾斜部６と垂直部７の形成順序が逆に形成されており、ベース平面１の周縁から垂線Ｌに略平行に立ち上げられた垂直部９と、垂直部９の周縁に外側に鋭角に傾斜して立ち上げられた傾斜部８と、その傾斜部８の縁から前記垂線Ｌに略平行に立ち上げられた垂直部９と、を具備する。
　さらに、第１プレート２の傾斜部６及び垂直部７と、第２プレート３の傾斜部８及び垂直部９は夫々鈍角に曲折形成され、各プレート２、３は段付きのカップ状に形成されている。
　これらの第１プレート２の垂直部７と第２プレート３の垂直部９どうしが整合し、そして、第１プレート２の各傾斜部６と第２プレート３の傾斜部８どうしが整合されて、各プレート２、３が接続されている。
　この例では、第１流路４にインナフィン１０が介装されている。
　また、第１プレート２及び第２プレート３のベース平面１には、多数の凸部１１が形成されている。第２プレート３には、そのベース平面１の第２流路５側に多数の凸部１１が突設され、第１プレート２にはそのベース平面１の第２流路５側に多数の凸部１１が突設されている。
　第１プレート２の凸部１１の形成位置と、第２プレート３の凸部１１の形成位置は、略整合するように配置されている。
　この例では、図１、図２に示す如く、第１流路４側にはベースプレート１４の出入口１６が連通しており、第２流路５側にはパイプ１５が連通している。一例として、ベースプレート１４の出入口１６から被冷却流体（この例ではオイル）が流入し、パイプ１５から冷媒が流入する。そして、冷媒と被冷却流体との間に熱交換が行われるものである。
　本発明の熱交換器の特徴は、第１プレート２のベース平面１に形成された凸部１１の頂部と、第２プレート３のベース平面１に形成された凸部１１の頂部が接触して、第２流路５が形成されている。これらの凸部１１は、図１（Ｂ）に示す如く、その断面がドーム状に形成されている。
　この例では、第１プレート２，第２プレート３を積層したとき自由状態では、両プレート２、３の傾斜部６、８間に極めて微小な隙間を形成させ、各第１プレート２，第２プレート３を厚み方向に押圧したとき、その隙間を無くし且つ、凸部１１同士が僅かに変形して接触する構造にしている。
　第１プレート２と、第２プレート３の板材の板厚は、０．４ｍｍ~１．０ｍｍに形成されている。
　第１プレート２と、第２プレート３のベース平面１に形成された凸部１１の直径Ｄは、２ｍｍ~９ｍｍに形成されている。
　そして、第２流路５の高さは、０．８ｍｍ~２．６ｍｍに形成されている。
　これらの数値は、実験的に確認されたものである。
　上記の寸法で形成することにより、プレス加工により減肉した凸部１１と、減肉のない凸部１１周辺のプレートとの剛性比が最適となり、対向する凸部同士が押し合った場合でも、局所的に凸部が変形するにとどまり、凸部周辺のプレートの変形が防止される。
　なお、各プレート２、３に形成された各凸部１１の高さは、第２流路５の高さの略半分（０．４ｍｍ~１．３ｍｍ）とすることが好ましい。第１プレート２の傾斜部６の傾斜角度と、第２プレート３の傾斜部８の傾斜角度は、適宜最適な傾斜角度を採用することができる。 Next, an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show the heat exchanger of the present invention, FIG. 1 (A) is a vertical sectional view thereof, FIG. 1 (B) is an enlarged view of part B of FIG. 1 (A), and FIG. 2 is a plan view thereof. (A), front view (B), and FIG. 3 are a plan view (A) and a front view (B) of the second plate 3 constituting the heat exchanger, and a plan view (C) and a front view of the first plate 2. (D).
This heat exchanger is made of a press-formed body of an aluminum material or an aluminum alloy plate material, and is a cup-shaped first plate 2 that is stepped from the center to the outside with respect to the entire peripheral edge of the base plane 1 as a whole. And the second plate 3 are alternately laminated with an interval in the thickness direction, and are formed alternately between the plates in the stacking direction of the first flow path 4 and the second flow path 5.
As shown in FIG. 1 (B), the first plate 2 has an inclined portion 6 raised with an acute angle outward with respect to a perpendicular line L erected from the peripheral edge of the base plane 1, and an inclined portion 6 thereof. It has a vertical portion 7 raised substantially parallel to the vertical line L from the edge, and an inclined portion 6 raised from the edge of the vertical portion 7 at an acute angle outward with respect to the vertical line L.
Further, in the second plate 3, the inclined portion 6 and the vertical portion 7 of the first plate 2 are formed in the reverse order of formation, and the vertical portion 9 is raised substantially parallel to the perpendicular line L from the peripheral edge of the base plane 1. A vertical portion 8 is provided on the peripheral edge of the vertical portion 9 so as to be inclined outward at a sharp angle, and a vertical portion 9 which is raised substantially parallel to the vertical line L from the edge of the inclined portion 8. ..
Further, the inclined portion 6 and the vertical portion 7 of the first plate 2 and the inclined portion 8 and the vertical portion 9 of the second plate 3 are each bent at an obtuse angle, and each of the plates 2 and 3 is formed in a stepped cup shape. ing.
The vertical portions 7 of the first plate 2 and the vertical portions 9 of the second plate 3 are aligned with each other, and the inclined portions 6 of the first plate 2 and the inclined portions 8 of the second plate 3 are aligned with each other. Each plate 2, 3 is connected.
In this example, the inner fin 10 is interposed in the first flow path 4.
Further, a large number of convex portions 11 are formed on the base plane 1 of the first plate 2 and the second plate 3. The second plate 3 has a large number of protrusions 11 projecting on the second flow path 5 side of the base plane 1, and the first plate 2 has a large number of protrusions on the second flow path 5 side of the base plane 1. The part 11 is projected.
The forming position of the convex portion 11 of the first plate 2 and the forming position of the convex portion 11 of the second plate 3 are arranged so as to be substantially aligned with each other.
In this example, as shown in FIGS. 1 and 2, the entrance / exit 16 of the base plate 14 communicates with the first flow path 4 side, and the pipe 15 communicates with the second flow path 5 side. As an example, the fluid to be cooled (oil in this example) flows in from the inlet / outlet 16 of the base plate 14, and the refrigerant flows in from the pipe 15. Then, heat exchange is performed between the refrigerant and the fluid to be cooled.
The feature of the heat exchanger of the present invention is that the top of the convex portion 11 formed on the base plane 1 of the first plate 2 and the top of the convex portion 11 formed on the base plane 1 of the second plate 3 come into contact with each other. , The second flow path 5 is formed. As shown in FIG. 1B, these convex portions 11 have a dome-shaped cross section.
In this example, when the first plate 2 and the second plate 3 are laminated, in the free state, an extremely small gap is formed between the inclined portions 6 and 8 of both plates 2 and 3, respectively, and the first plate 2 and the second plate 3 are formed. When the plate 3 is pressed in the thickness direction, the gap is eliminated and the convex portions 11 are slightly deformed and come into contact with each other.
The plate thickness of the plate material of the first plate 2 and the second plate 3 is formed to be 0.4 mm to 1.0 mm.
The diameter D of the convex portion 11 formed on the base plane 1 of the first plate 2 and the second plate 3 is formed to be 2 mm to 9 mm.
The height of the second flow path 5 is formed to be 0.8 mm to 2.6 mm.
These numbers are experimentally confirmed.
By forming with the above dimensions, the rigidity ratio between the convex portion 11 thinned by press working and the plate around the convex portion 11 without thinning is optimized, and even when the opposing convex portions are pressed against each other, the rigidity ratio is optimized. The convex portion is only locally deformed, and the deformation of the plate around the convex portion is prevented.
The height of each convex portion 11 formed on each of the plates 2 and 3 is preferably approximately half the height of the second flow path 5 (0.4 mm to 1.3 mm). As the inclination angle of the inclined portion 6 of the first plate 2 and the inclination angle of the inclined portion 8 of the second plate 3, an optimum inclination angle can be appropriately adopted.
　本発明は、主としてケースレス型の熱交換器であって、オイルクーラ等に利用することができる。 The present invention is mainly a caseless heat exchanger and can be used for an oil cooler or the like.
　１　ベース平面
　２　第１プレート
　３　第２プレート
　４　第１流路
　５　第２流路
　６　傾斜部
　７　垂直部
　８　傾斜部
　９　垂直部
　１０　インナフィン
　１１　凸部
　１２　下端プレート
　１３　上端プレート
　１４　ベースプレート
　１５　パイプ
　１６　出入口
　Ｓ　隙間
　Ｎ　変形部
　Ｌ　垂線
　Ｄ　凸部１１の直径 1 Base plane 2 1st plate 3 2nd plate 4 1st flow path 5 2nd flow path 6 Inclined part 7 Vertical part 8 Inclined part 9 Vertical part 10 Inner fin 11 Convex part 12 Bottom plate 13 Top plate 14 Base plate 15 Pipe 16 Doorway S Gap N Deformation part L Perpendicular line D Diameter of convex part 11

Claims (2)

  1. 　夫々アルミニウム材またはアルミニウム合金の板材を、ベース平面（１）の全周縁に対して全体としてその中心から外側に向かって傾斜して立上げたカップ状の第１プレート（２）と第２プレート（３）とが、厚み方向に間隔を有して交互に積層し、各プレート間に第１流路（４）と、第２流路（５）とが積層方向に交互に形成され、
    　第１プレート（２）は、ベース平面（１）の周縁から立てた垂線（Ｌ）に対して外側へ鋭角に傾斜して立上げられた傾斜部（６）と、その傾斜部（６）の縁から前記垂線（Ｌ）に略平行に立上げられた垂直部（７）と、その垂直部（７）の縁から前記垂線（Ｌ）に対して外側に鋭角に傾斜して立ち上げられた傾斜部（６）と、
    　第２プレート（３）は、ベース平面（１）の周縁から垂線（Ｌ）に略平行に立上げられた垂直部（９）と、その垂直部（９）の周縁に外側へ鋭角に傾斜して立上げられた傾斜部（８）と、その傾斜部（８）の縁から前記垂線（Ｌ）に略平行に立ち上げられた垂直部（９）と、を具備し、
    　第１プレート（２）の傾斜部（６）及び垂直部（７）、並びに第２プレート（３）の傾斜部（８）及び垂直部（９）は、夫々鈍角に曲折形成され、各プレート（２）（３）は段付のカップ状に形成され、
    　第１プレート（２）と第２プレート（３）の各垂直部（７）（９）どうし及び、各傾斜部（６）（８）どうしが整合されており、
    　第１流路（４）にはインナフィン（１０）が介装されている熱交換器において、
    　第２流路（５）の第１プレート（２）および第２プレート（３）には、夫々対向する面側に断面ドーム状の多数の凸部（１１）が形成されて、各凸部（１１）の頂部どうしが接して、それら各プレートの各接触部がろう付接合され、
    　前記板材の板厚が０．４ｍｍ~１．０ｍｍ、前記凸部（１１）の直径Ｄが２ｍｍ~９ｍｍ、第２流路（５）の高さが０．８ｍｍ~２．６ｍｍであることを特徴とする熱交換器。     The cup-shaped first plate (2) and the second plate (2) and the second plate (2), each of which is an aluminum material or an aluminum alloy plate that is raised by inclining outward from the center as a whole with respect to the entire peripheral edge of the base plane (1). 3) are alternately laminated with an interval in the thickness direction, and the first flow path (4) and the second flow path (5) are alternately formed between the plates in the stacking direction.
    The first plate (2) has an inclined portion (6) raised at an acute angle outward with respect to a perpendicular line (L) erected from the peripheral edge of the base plane (1), and an inclined portion (6) thereof. A vertical portion (7) raised substantially parallel to the vertical line (L) from the edge, and a vertical portion (7) raised from the edge of the vertical portion (7) at an acute angle outward with respect to the vertical line (L). Inclined part (6) and
    The second plate (3) has a vertical portion (9) raised substantially parallel to the perpendicular line (L) from the peripheral edge of the base plane (1) and an acute angle outward from the peripheral edge of the vertical portion (9). It is provided with an inclined portion (8) raised up and a vertical portion (9) raised substantially parallel to the vertical line (L) from the edge of the inclined portion (8).
    The inclined portion (6) and the vertical portion (7) of the first plate (2), and the inclined portion (8) and the vertical portion (9) of the second plate (3) are each bent at an obtuse angle, and each plate ( 2) (3) is formed in a stepped cup shape.
    The vertical portions (7) and (9) of the first plate (2) and the second plate (3) and the inclined portions (6) and (8) are aligned with each other.
    In the heat exchanger in which the inner fin (10) is interposed in the first flow path (4),
    In the first plate (2) and the second plate (3) of the second flow path (5), a large number of convex portions (11) having a dome-shaped cross section are formed on the opposite surface sides, respectively, and each convex portion ( 11) The tops of each plate are in contact with each other, and each contact portion of each of these plates is brazed and joined.
    The plate thickness of the plate material is 0.4 mm to 1.0 mm, the diameter D of the convex portion (11) is 2 mm to 9 mm, and the height of the second flow path (5) is 0.8 mm to 2.6 mm. Characterized heat exchanger.
  2. 　請求項１に記載の熱交換器において、
    　第１プレート（２）および第２プレート（３）のろう付接合前、各プレートを積層したときの自由状態で、第１プレート（２）の前記傾斜部（６）と第２プレートの前記傾斜部（８）との間に隙間を有し、厚み方向に各プレートを圧縮したとき、前記隙間をなくして、凸部（１１）どうしが接触するように構成した熱交換器。     In the heat exchanger according to claim 1,
    Before brazing joining of the first plate (2) and the second plate (3), the inclined portion (6) of the first plate (2) and the inclined portion of the second plate are in a free state when the plates are laminated. A heat exchanger having a gap between the plate and the portion (8) so that when each plate is compressed in the thickness direction, the gap is eliminated and the convex portions (11) are in contact with each other.
PCT/JP2021/042509 2020-11-20 2021-11-11 Heat exchanger WO2022107868A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10206067A (en) * 1997-01-27 1998-08-07 Honda Motor Co Ltd Supporting structure for heat-exchanger
JP2000146477A (en) * 1998-11-17 2000-05-26 Calsonic Corp Laminated heat exchanger
JP2007248031A (en) * 2006-03-20 2007-09-27 T Rad Co Ltd Laminate type heat exchanger and its manufacturing method
JP2013029296A (en) * 2011-07-29 2013-02-07 T Rad Co Ltd Header plateless heat exchanger
JP2019070474A (en) * 2017-10-06 2019-05-09 株式会社ティラド Caseless oil cooler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10206067A (en) * 1997-01-27 1998-08-07 Honda Motor Co Ltd Supporting structure for heat-exchanger
JP2000146477A (en) * 1998-11-17 2000-05-26 Calsonic Corp Laminated heat exchanger
JP2007248031A (en) * 2006-03-20 2007-09-27 T Rad Co Ltd Laminate type heat exchanger and its manufacturing method
JP2013029296A (en) * 2011-07-29 2013-02-07 T Rad Co Ltd Header plateless heat exchanger
JP2019070474A (en) * 2017-10-06 2019-05-09 株式会社ティラド Caseless oil cooler

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