JP6888908B2

JP6888908B2 - Plate structure

Info

Publication number: JP6888908B2
Application number: JP2015245509A
Authority: JP
Inventors: 美代望月; 山内　崇史; 崇史山内; 貴範金子; 章博石原; 敬河原田; 省三永井; 博紀萩野
Original assignee: Fukuda Metal Foil and Powder Co Ltd; Toyota Central R&D Labs Inc
Current assignee: Fukuda Metal Foil and Powder Co Ltd; Toyota Central R&D Labs Inc
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2021-06-18
Anticipated expiration: 2035-12-16
Also published as: JP2017110854A

Description

本発明は、積層した複数枚の金属板をろう付して構成されるプレート構造に関する。 The present invention relates to a plate structure formed by brazing a plurality of laminated metal plates.

特許文献１のプレート構造では、配置工程において、予め決められた接合部に金属粉末の粉末集合体が配置され、接合工程において、金属粉末間に接合ろう材が吸引され、金属粉末の接合ろう材に含まれるバインダが蒸発される。接合ろう材が金属粉末に含浸して金属粉末の表面に接合ろう材が共晶することで、複合ろう材が形成される。一対の金属板が接合される際に、粉末集合体を構成する金属粉末が支柱となる支柱効果を発揮するため、複合ろう材により、一対の金属板を予め決められた接合部位において接合することができる。 In the plate structure of Patent Document 1, a powder aggregate of metal powder is arranged at a predetermined joint portion in the arrangement step, and in the joining step, the joining brazing material is sucked between the metal powders, and the joining brazing material of the metal powder is sucked. The binder contained in is evaporated. A composite brazing material is formed by impregnating the metal powder with the bonding brazing material and eutecticizing the bonding brazing material on the surface of the metal powder. When a pair of metal plates are joined, the metal powder constituting the powder aggregate exerts a strut effect of serving as a strut. Therefore, the pair of metal plates are joined at a predetermined joining site by using a composite brazing material. Can be done.

引用文献２のプレート構造では、一対の金属板をろう材で接合する際に、金属シートを構成する金属粉末に溶融した接合ろう材が吸引される。ここで、金属シート材を構成する金属粉末が、一対の金属板を接合する際に、支柱となる支柱効果を発揮するため、ろう材の適正厚さを確保することができる。金属シート材を配置するために、ろう付作業を容易にすることができる。つまり、引用文献２のプレート構造では、一対の金属板を接合する際に、ろう材の適正厚さを確保した上で、ろう付作業を容易にすることができる。 In the plate structure of Cited Document 2, when a pair of metal plates are joined with a brazing material, the joining brazing material melted in the metal powder constituting the metal sheet is sucked. Here, since the metal powder constituting the metal sheet material exerts a strut effect as a strut when joining a pair of metal plates, it is possible to secure an appropriate thickness of the brazing material. Since the metal sheet material is arranged, the brazing work can be facilitated. That is, in the plate structure of Cited Document 2, when joining a pair of metal plates, the brazing work can be facilitated while ensuring an appropriate thickness of the brazing material.

特開２０１５−１１０２３６号公報Japanese Unexamined Patent Publication No. 2015-10236 特開２０１３−１１１６２２号公報Japanese Unexamined Patent Publication No. 2013-11162

しかしながら、従来のプレート構造では、金属板と金属板との間に空間を設けた構成の場合、該空間の寸法、即ち、空間部分における金属板と金属板との間隔を保つための補助が無いため、複数の金属板を積層した場合に、空間部分に対応する金属板が変形してプレート構造の積層方向の寸法を管理することが困難となる。 However, in the conventional plate structure, in the case of a configuration in which a space is provided between the metal plates, there is no assistance for maintaining the dimensions of the space, that is, the distance between the metal plates in the space portion. Therefore, when a plurality of metal plates are laminated, the metal plate corresponding to the space portion is deformed, and it becomes difficult to control the dimensions of the plate structure in the stacking direction.

本発明は、複数枚の金属板を空間を有するように積層する場合に、積層方向の寸法を管理することが可能となるプレート構造を提供することを目的とする。 An object of the present invention is to provide a plate structure capable of controlling the dimensions in the stacking direction when a plurality of metal plates are laminated so as to have a space.

第１態様に記載のプレート構造は、平板状の第１金属部材と、前記第１金属部材の片面に接触して前記第１金属部材との間に空間を形成する凸部を有する第２金属部材と、を交互に積層した積層体と、接合ろう材と金属粉末とを含んで構成され、前記第１金属部材と前記第２金属部材とを接合している複合ろう材と、前記第１金属部材と前記第２金属部材との何れか一方の縁部に設けられ、前記第１金属部材と前記第２金属部材との何れか他方に当接して前記空間に対応する前記第１金属部材と前記第２金属部材との間隔を保つ第１空間確保部と、を有する。 The plate structure according to the first aspect is a second metal having a convex portion that is in contact with one side of the flat plate-shaped first metal member and forms a space between the first metal member. A composite brazing material composed of a laminated body in which members are alternately laminated, a joining brazing material and a metal powder, and joining the first metal member and the second metal member, and the first metal member. The first metal member provided on the edge of either one of the metal member and the second metal member, abuts on the other of the first metal member and the second metal member, and corresponds to the space. It has a first space securing portion that keeps a distance between the metal member and the second metal member.

第１態様に記載のプレート構造は、平板状の第１金属部材と、第１金属部材の片面に接触して第１金属部材との間に空間を形成する凸部を有する第２金属部材と、を交互に積層した積層体を含み、積層体を構成している第１金属部材と第２金属部材とは、接合ろう材と金属粉末とを含んで構成された複合ろう材によって接合されている。 The plate structure according to the first aspect includes a flat plate-shaped first metal member and a second metal member having a convex portion that contacts one side of the first metal member and forms a space between the first metal member. , And the first metal member and the second metal member constituting the laminate are joined by a composite brazing material composed of a bonding brazing material and a metal powder. There is.

複合ろう材は、金属粉末分が、第１金属部材と第２金属部材とを接合する際に、支柱（スペーサ）の役割を果たすため、金属粉末を用いずろう材のみで接合する場合に比較し、ろう材の適正厚さが確保される。 In the composite brazing material, the metal powder acts as a support column (spacer) when joining the first metal member and the second metal member, so this is compared with the case where the composite brazing material is joined only with the brazing material without using the metal powder. However, the proper thickness of the brazing material is ensured.

また、第１態様に記載のプレート構造では、第１金属部材と第２金属部材との何れか一方の縁部に、第１金属部材と第２金属部材との何れか他方に当接して空間に対応する第１金属部材と第２金属部材との間隔を保つ第１空間確保部が設けられている。このため、第１空間確保部が設けられていない場合に比較して、積層された第１金属部材、及び第２金属部材の縁部付近の変形（撓み）が抑えられ、プレート構造の積層方向の寸法を管理することができる。 Further, in the plate structure described in the first aspect , a space is provided in contact with either one of the first metal member and the second metal member at the edge of the plate structure and the other of the first metal member and the second metal member. A first space securing portion for maintaining a distance between the first metal member and the second metal member corresponding to the above is provided. Therefore, as compared with the case where the first space securing portion is not provided, the deformation (deflection) of the laminated first metal member and the vicinity of the edge portion of the second metal member is suppressed, and the stacking direction of the plate structure is suppressed. You can control the dimensions of.

第２態様に記載の発明は、第１態様に記載のプレート構造において、前記第１空間確保部は、前記第１金属部材と前記第２金属部材との何れか一方の縁部から一体的に突出した部分である。 In the invention described in the second aspect , in the plate structure according to the first aspect , the first space securing portion is integrally formed from the edge portion of either one of the first metal member and the second metal member. It is a protruding part.

第２態様に記載のプレート構造では、第１空間確保部が、第１金属部材と第２金属部材との何れか一方の縁部から一体的に突出した部分で構成されている。このため、第１空間確保部を別部品として用意する必要が無く、部品点数を最小限に抑えることができる。 In the plate structure according to the second aspect , the first space securing portion is composed of a portion integrally protruding from the edge portion of either one of the first metal member and the second metal member. Therefore, it is not necessary to prepare the first space securing portion as a separate component, and the number of components can be minimized.

第３態様に記載の発明は、第１態様または第２態様に記載のプレート構造において、前記第１空間確保部の高さをＨ、前記凸部の高さをｈ、前記複合ろう材の高さをｔとしたときに、Ｈ≦ｈ＋ｔとした。 In the invention described in the third aspect , in the plate structure according to the first aspect or the second aspect , the height of the first space securing portion is H, the height of the convex portion is h, and the height of the composite brazing material is high. When t was t, H ≦ h + t.

第１空間確保部の高さをＨ、凸部の高さをｈ、複合ろう材の高さをｔとしたときに、Ｈ≦ｈ＋ｔとすることで、複合ろう材で第１金属部材と第２金属部材とを接合できる。なお、Ｈ＞ｈ＋ｔになると、複合ろう材が、第１金属部材または第２金属部材に接触しなくなる。 When the height of the first space securing portion is H, the height of the convex portion is h, and the height of the composite brazing material is t, H ≦ h + t, so that the composite brazing material can be the first metal member and the first metal member. 2 Can be joined to metal members. When H> h + t, the composite brazing material does not come into contact with the first metal member or the second metal member.

第４態様に記載の発明は、第１態様〜第３態様の何れか一態様に記載のプレート構造において、前記第１金属部材と前記第２金属部材との何れか一方の平面部分には、前記第１金属部材と前記第２金属部材との何れか他方に当接して前記第１金属部材と前記第２金属部材との間隔を保つ第２空間確保部が形成されている。 The invention described in the fourth aspect, the plate structure according to any one aspect of the first aspect to third aspect, in any one of the planar portions of the first metal member and the second metal member, A second space securing portion is formed in which the first metal member and the second metal member are in contact with each other to maintain a distance between the first metal member and the second metal member.

第４態様に記載のプレート構造では、第１金属部材と第２金属部材との何れか一方の平面部分に、第１金属部材と第２金属部材との何れか他方に当接して第１金属部材と第２金属部材との間隔を保つ第２空間確保部が設けられている。このため、第２空間確保部が設けられていない場合に比較して、積層された第１金属部材、及び第２金属部材の平面部分における変形（撓み）が抑えられ、プレート構造の積層方向の寸法を管理することができる。 In the plate structure according to the fourth aspect , the first metal comes into contact with the flat surface portion of either the first metal member or the second metal member and the other of the first metal member and the second metal member. A second space securing portion for keeping a distance between the member and the second metal member is provided. Therefore, as compared with the case where the second space securing portion is not provided, the deformation (deflection) of the laminated first metal member and the second metal member in the flat surface portion is suppressed, and the plate structure is in the stacking direction. The dimensions can be controlled.

本発明のプレート構造によれば、第１金属部材と第２金属部材とを交互に積層した積層体の積層方向の寸法を管理することができる。 According to the plate structure of the present invention, it is possible to control the dimensions in the stacking direction of the laminated body in which the first metal member and the second metal member are alternately laminated.

第１の実施形態に係る熱交換器の側断面図である。It is a side sectional view of the heat exchanger which concerns on 1st Embodiment. （Ａ）は第１金属部材の表面を示す斜視図であり、（Ｂ）は図２（Ａ）に示す第１金属部材の２（Ｂ）−２（Ｂ）線断面図である。(A) is a perspective view showing the surface of the first metal member, and (B) is a sectional view taken along line 2 (B) -2 (B) of the first metal member shown in FIG. 2 (A). （Ａ）は第１金属部材の裏面を示す斜視図であり、（Ｂ）は図３（Ａ）に示す第１金属部材の３（Ｂ）−３（Ｂ）線断面図である。(A) is a perspective view showing the back surface of the first metal member, and (B) is a sectional view taken along line 3 (B) -3 (B) of the first metal member shown in FIG. 3 (A). （Ａ）は第２金属部材を示す斜視図であり、（Ｂ）は図４（Ａ）に示す第２金属部材の４（Ｂ）−４（Ｂ）線断面図である。(A) is a perspective view showing a second metal member, and (B) is a sectional view taken along line 4 (B) -4 (B) of the second metal member shown in FIG. 4 (A). 第１熱媒体流入管を示す斜視図である。It is a perspective view which shows the 1st heat medium inflow pipe. （Ａ）は第１の実施形態に係る熱交換器のろう付前の熱交換器本体を示す斜視図であり、（Ｂ）は図６（Ａ）に示す熱交換器本体の６（Ｂ）−６（Ｂ）線断面図である。(A) is a perspective view showing the heat exchanger main body before brazing of the heat exchanger according to the first embodiment, and (B) is 6 (B) of the heat exchanger main body shown in FIG. 6 (A). -6 (B) line sectional view. （Ａ）は第２折り曲げ部付近を示す第２金属部材の斜視図であり、（Ｂ）は、第１折り曲げ部付近を示す第２金属部材の斜視図である。(A) is a perspective view of a second metal member showing the vicinity of the second bent portion, and (B) is a perspective view of the second metal member showing the vicinity of the first bent portion. 第１の実施形態に係る熱交換器のろう付後の熱交換器本体を示す断面図である。It is sectional drawing which shows the heat exchanger main body after brazing of the heat exchanger which concerns on 1st Embodiment. （Ａ）は、第１折り曲げ部の寸法関係を示す断面図であり、（Ｂ）第２折り曲げ部の寸法関係を示す断面図である。(A) is a cross-sectional view showing the dimensional relationship of the first bent portion, and (B) is a cross-sectional view showing the dimensional relationship of the second bent portion. （Ａ）は第２の実施形態に係る熱交換器の第２金属部材を示す斜視図であり、（Ｂ）は第２の実施形態に係る熱交換器の熱交換器本体を示す斜視図である。(A) is a perspective view showing a second metal member of the heat exchanger according to the second embodiment, and (B) is a perspective view showing a heat exchanger main body of the heat exchanger according to the second embodiment. is there. 第２の実施形態に係る熱交換器の側断面図である。It is a side sectional view of the heat exchanger which concerns on 2nd Embodiment. （Ａ）は第３お実施形態に係る熱交換器の第２金属部材を示す斜視図であり、（Ｂ）は図１２（Ａ）に示す第２金属部材の１２（Ｂ）−１２（Ｂ）線断面図である。(A) is a perspective view showing the second metal member of the heat exchanger according to the third embodiment, and (B) is 12 (B) -12 (B) of the second metal member shown in FIG. 12 (A). ) Line cross-sectional view. 第３の実施形態に係る熱交換器を示す側断面図である。It is a side sectional view which shows the heat exchanger which concerns on 3rd Embodiment. （Ａ）は第４実施形態に係る熱交換器の第１金属部材の裏面を示す斜視図であり、（Ｂ）は図１４（Ａ）に示す第１金属部材の表面を示す斜視図である。(A) is a perspective view showing the back surface of the first metal member of the heat exchanger according to the fourth embodiment, and (B) is a perspective view showing the front surface of the first metal member shown in FIG. 14 (A). .. 第４の実施形態に係る熱交換器の第２金属部材を示す斜視図である。It is a perspective view which shows the 2nd metal member of the heat exchanger which concerns on 4th Embodiment. 第４の実施形態に係る熱交換器の熱交換器本体を示す斜視図である。It is a perspective view which shows the heat exchanger main body of the heat exchanger which concerns on 4th Embodiment. 第４の実施形態に係る熱交換器を示す側断面図である。It is a side sectional view which shows the heat exchanger which concerns on 4th Embodiment. 第５の実施形態に係る熱交換器の熱交換器本体を示す斜視図である。It is a perspective view which shows the heat exchanger main body of the heat exchanger which concerns on 5th Embodiment. 第５の実施形態に係る熱交換器を示す側断面図である。It is a side sectional view which shows the heat exchanger which concerns on 5th Embodiment.

［第１実施形態］
本発明に係る実施形態の一例を図面に基づき説明する。以下では、プレート構造の一例としての熱交換器１０、及び熱交換器１０の製造方法について説明する。 [First Embodiment]
An example of the embodiment according to the present invention will be described with reference to the drawings. Hereinafter, the heat exchanger 10 as an example of the plate structure and the method for manufacturing the heat exchanger 10 will be described.

（熱交換器）
図１に示すように、熱交換器１０は、筐体１２、熱交換器本体１４、第１熱媒体流入管１６、第１熱媒体流出管１８、第２熱媒体流入管２０、及び第２熱媒体流出管２２を含んで構成されている。 (Heat exchanger)
As shown in FIG. 1, the heat exchanger 10 includes a housing 12, a heat exchanger main body 14, a first heat medium inflow pipe 16, a first heat medium outflow pipe 18, a second heat medium inflow pipe 20, and a second heat exchanger. It is configured to include a heat medium outflow pipe 22.

（筐体）
筐体１２は、熱交換器本体１４を内部に収容する部材であり、一方側（図１における左側）に開口を有する箱状（直方体状）に形成された本体１２Ａと、本体１２Ａの開口を閉鎖する矩形の板状とされた蓋部材１２Ｂと、を有している。 (Case)
The housing 12 is a member that houses the heat exchanger main body 14 inside, and has a box-shaped (rectangular parallelepiped) main body 12A having an opening on one side (left side in FIG. 1) and an opening of the main body 12A. It has a rectangular plate-shaped lid member 12B that closes.

本体１２Ａの底板部１２Ａａには、第１熱媒体流入管１６が挿入される孔２４が形成されている。また、本体１２Ａの一方の側板部１２Ａｂには第２熱媒体流入管２０が挿入される孔２６が形成されており、本体１２Ａの他方の側板部１２Ａｃには第２熱媒体流出管２２が挿入される孔２８が形成されている。一方、蓋部材１２Ｂには、第１熱媒体流出管１８が挿入される孔３０が形成されている。 A hole 24 into which the first heat medium inflow pipe 16 is inserted is formed in the bottom plate portion 12Aa of the main body 12A. Further, a hole 26 into which the second heat medium inflow pipe 20 is inserted is formed in one side plate portion 12Ab of the main body 12A, and the second heat medium outflow pipe 22 is inserted in the other side plate portion 12Ac of the main body 12A. The holes 28 to be formed are formed. On the other hand, the lid member 12B is formed with a hole 30 into which the first heat medium outflow pipe 18 is inserted.

（第１熱媒体流入管、第１熱媒体流出管）
第１熱媒体流入管１６は、筐体１２の内部に突出しており、管部１６Ａの端部にはフランジ１６Ｂが形成されている。また、第１熱媒体流出管１８は、筐体１２の内部に突出しており、管部１８Ａの端部にはフランジ１８Ｂが形成されている。 (1st heat medium inflow pipe, 1st heat medium outflow pipe)
The first heat medium inflow pipe 16 projects inside the housing 12, and a flange 16B is formed at the end of the pipe portion 16A. Further, the first heat medium outflow pipe 18 projects inside the housing 12, and a flange 18B is formed at the end of the pipe portion 18A.

熱交換器本体１４は、第１金属部材３２と第２金属部材３４とを交互に積層して互いに接合することで構成されている。本実施形態では、図１に示されるように、第１熱媒体流入管１６、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、及び第１熱媒体流出管１８が、この順で積層された状態で、各部材が後述する複合ろう材５２によって接合されている。 The heat exchanger main body 14 is configured by alternately laminating the first metal member 32 and the second metal member 34 and joining them to each other. In the present embodiment, as shown in FIG. 1, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, the second metal member 34, and the first metal member 32. , The second metal member 34, the first metal member 32, and the first heat medium outflow pipe 18 are laminated in this order, and each member is joined by a composite brazing material 52 described later.

（第１金属部材）
図２（Ａ）には、第２金属部材３４と接合（ろう付）する前の第１金属部材３２の表面３２Ａが示されている。本実施形態の第１金属部材３２は、ステンレス鋼で構成され且つ平板とされた金属板である。第１金属部材３２は、矩形状に形成されており、中央には矩形孔３６が形成されている。 (1st metal member)
FIG. 2A shows the surface 32A of the first metal member 32 before being joined (brazed) to the second metal member 34. The first metal member 32 of the present embodiment is a metal plate made of stainless steel and made into a flat plate. The first metal member 32 is formed in a rectangular shape, and a rectangular hole 36 is formed in the center thereof.

図２（Ａ）、（Ｂ）に示すように、第１金属部材３２の表面３２Ａには、外周縁に沿って金属粉末を一定厚さ（高さ）、一定幅のシート状（帯状）に形成した金属シート材３８（金属粉末の集合体の一例）が設けられており、その内側にろう材を一定高さ、一定幅のシート状（帯状）に形成したろう付シート材４０が隣接して設けられている。 As shown in FIGS. 2 (A) and 2 (B), on the surface 32A of the first metal member 32, metal powder is formed into a sheet shape (strip shape) having a constant thickness (height) and a constant width along the outer peripheral edge. The formed metal sheet material 38 (an example of an aggregate of metal powder) is provided, and a brazed sheet material 40 formed by forming a brazing material into a sheet shape (strip shape) having a constant height and a constant width is adjacent to the inside thereof. It is provided.

図３（Ａ）、及び図３（Ｂ）に示すように、第１金属部材３２の裏面３２Ｂには、矩形孔３６の内周縁に沿って金属シート材３８が設けられており、その外側にろう付シート材４０が隣接して設けられている。 As shown in FIGS. 3A and 3B, the back surface 32B of the first metal member 32 is provided with a metal sheet material 38 along the inner peripheral edge of the rectangular hole 36, and a metal sheet material 38 is provided on the outer side thereof. The brazed sheet material 40 is provided adjacent to the brazed sheet material 40.

具体的には、金属シート材３８は、金属粉末と、金属粉末同士を接着させるバインダ（一例として、有機系溶剤、水系媒体）とを混合させ、これを乾燥させて、厚さ（一例として厚さ９０〔μｍ〕）一定のシート状にした部材である。なお、金属シート材３８に残存するバインダは、後述の接合工程における加熱炉内の温度（ろう付温度）以下で、蒸発するようになっている。 Specifically, the metal sheet material 38 is made by mixing a metal powder and a binder (for example, an organic solvent or an aqueous medium) for adhering the metal powders, and drying the metal powder to obtain a thickness (as an example, a thickness). 90 [μm]) It is a member in the form of a constant sheet. The binder remaining on the metal sheet material 38 evaporates below the temperature (brazing temperature) in the heating furnace in the joining step described later.

本実施形態の金属粉末は、第１金属部材３２、及び第２金属部材３４と同様の組成であるステンレス鋼の粉末が用いられ、ろう付温度で、ろう材が、金属粉末に含浸して金属粉末の表面に共晶結合するようになっている。なお、金属粉末としては、一例として、粒径１０〜４５〔μｍ〕のステンレス鋼の粉末が用いられる。 As the metal powder of the present embodiment, stainless steel powder having the same composition as that of the first metal member 32 and the second metal member 34 is used, and the brazing material impregnates the metal powder with the metal at the brazing temperature. It is designed to be eutectic bonded to the surface of the powder. As the metal powder, as an example, a stainless steel powder having a particle size of 10 to 45 [μm] is used.

また、ろう材は、ステンレス鋼製の第１金属部材３２、及び第２金属部材３４に対して融点が低く、さらに、第１金属部材３２、及び第２金属部材３４のステンレス鋼と共晶結合可能なものが用いられる。ろう材として、例えば、Ｎｉ基（ニッケル）ろう材、Ｆｅ基（鉄）ろう材、Ａｇ基（銀）ろう材、又はＴｉ基（チタン）ろう材を用いることが可能であるが、本実施形態では、ろう材としてＮｉ基（ニッケル）ろう材が用いられている。 Further, the brazing material has a lower melting point than the first metal member 32 and the second metal member 34 made of stainless steel, and is eutectic bonded to the stainless steel of the first metal member 32 and the second metal member 34. What is possible is used. As the brazing material, for example, a Ni-based (nickel) brazing material, an Fe-based (iron) brazing material, an Ag-based (silver) brazing material, or a Ti-based (titanium) brazing material can be used. , A Ni-based (nickel) brazing material is used as the brazing material.

そして、熱交換器１０を製造する際の後述する接合工程において、金属シート材３８のバインダが蒸発すると共に、溶融したろう材が金属粉末に含浸して後述する複合ろう材５２を構成するようになっている。 Then, in the joining step described later when manufacturing the heat exchanger 10, the binder of the metal sheet material 38 evaporates, and the molten brazing material impregnates the metal powder to form the composite brazing material 52 described later. It has become.

したがって、複合ろう材５２は、ステンレス鋼の粉末である金属粉末にＮｉ基ろう材であるろう材が、ろう付温度で共晶結合することで形成されるようになっている。さらに、この複合ろう材５２においては、金属粉末に対するろう材の体積比は、例えば、２５％以上５０％以下とされている。なお、この体積比については、質量と真密度との関係から算出することで得られる。 Therefore, the composite brazing material 52 is formed by eutectic bonding of a brazing material, which is a Ni-based brazing material, to a metal powder, which is a powder of stainless steel, at a brazing temperature. Further, in the composite brazing material 52, the volume ratio of the brazing material to the metal powder is, for example, 25% or more and 50% or less. It should be noted that this volume ratio can be obtained by calculating from the relationship between the mass and the true density.

（第２金属部材）
図４（Ａ），（Ｂ）に示すように、本実施形態の第２金属部材３４は、ステンレス鋼で構成された金属板をプレス加工することにより形成されている。第２金属部材３４は、外形が矩形状とされた平坦部３４Ａを有し、平坦部３４Ａの中央には、図４（Ｂ）に示すように、凹状空間４２が形成されるように押し出された第１凸部４４が形成されている。第１凸部４４は平面視で矩形状とされ、凹状空間４２は直方体形状とされている。第１凸部４４の頂部４４Ａの中央には、頂部４４Ａを厚み方向に貫通する矩形孔４６が形成されている。なお、第２金属部材３４の矩形孔４６は、第１金属部材３２の矩形孔３６と同等の形状、及び大きさとされている。 (Second metal member)
As shown in FIGS. 4A and 4B, the second metal member 34 of the present embodiment is formed by pressing a metal plate made of stainless steel. The second metal member 34 has a flat portion 34A having a rectangular outer shape, and is extruded so as to form a concave space 42 in the center of the flat portion 34A as shown in FIG. 4 (B). The first convex portion 44 is formed. The first convex portion 44 has a rectangular shape in a plan view, and the concave space 42 has a rectangular parallelepiped shape. A rectangular hole 46 is formed in the center of the top portion 44A of the first convex portion 44 so as to penetrate the top portion 44A in the thickness direction. The rectangular hole 46 of the second metal member 34 has the same shape and size as the rectangular hole 36 of the first metal member 32.

平坦部３４Ａの互いに対向する端縁３４Ａａ、端縁３４Ａｂには、中央部分に第１折り曲げ部４８が一体的に形成されている。第１折り曲げ部４８は、平坦部３４Ａから一体的、かつ矩形状に突出した部分を第１凸部４４の突出方向にプレス加工で折り曲げることで形成されている。 A first bent portion 48 is integrally formed at a central portion of the flat portion 34A at the end edges 34Aa and the edge 34Ab facing each other. The first bent portion 48 is formed by bending a portion integrally protruding from the flat portion 34A in a rectangular shape in the protruding direction of the first convex portion 44 by press working.

また、第１凸部４４の頂部４４Ａに形成されている矩形孔４６の端縁には、凹状空間４２に向けて突出する第２折り曲げ部５０が一体的に形成されている。第２折り曲げ部５０は、頂部４４Ａから一体的、かつ矩形状に突出した部分を凹状空間４２に向けてプレス加工で折り曲げることで形成されている。 Further, a second bent portion 50 projecting toward the concave space 42 is integrally formed at the end edge of the rectangular hole 46 formed in the top portion 44A of the first convex portion 44. The second bent portion 50 is formed by bending a portion integrally protruding from the top 44A in a rectangular shape toward the concave space 42 by press working.

（熱交換器の製造方法）
以下に熱交換器１０の製造方法の製造方法を説明する。熱交換器１０の製造方法は、以下に説明する準備工程と、配置工程と、接合工程と、収容工程と、を有している。 (Manufacturing method of heat exchanger)
The manufacturing method of the manufacturing method of the heat exchanger 10 will be described below. The method for manufacturing the heat exchanger 10 includes a preparation step, a placement step, a joining step, and a housing step described below.

（準備工程）
準備工程では、筐体１２の本体１２Ａ、蓋部材１２Ｂ、第１熱媒体流入管１６、第１熱媒体流出管１８、第２熱媒体流入管２０、第２熱媒体流出管２２、複数（本実施形態では４個）の第１金属部材３２、複数（本実施形態では３個）の第２金属部材３４を準備する。 (Preparation process)
In the preparatory step, the main body 12A of the housing 12, the lid member 12B, the first heat medium inflow pipe 16, the first heat medium outflow pipe 18, the second heat medium inflow pipe 20, the second heat medium outflow pipe 22, a plurality (main). A first metal member 32 (4 pieces in the embodiment) and a plurality of second metal members 34 (3 pieces in the present embodiment) are prepared.

（配置工程）
図２、及び図３に示すように、第１金属部材３２の両面に金属シート材３８とろう付シート材４０とを配置する。 (Placement process)
As shown in FIGS. 2 and 3, the metal sheet material 38 and the brazed sheet material 40 are arranged on both sides of the first metal member 32.

また、図５に示すように、第１熱媒体流入管１６のフランジ１６Ｂにおける管部１６Ａが形成された側とは反対側の面に、金属シート材３８と、ろう付シート材４０とを環状に配置する。なお、図示は省略するが、第１熱媒体流出管１８のフランジ１８Ｂにも、第１熱媒体流入管１６のフランジ１６Ｂと同様に金属シート材３８と、ろう付シート材４０とを環状に配置する。 Further, as shown in FIG. 5, the metal sheet material 38 and the brazed sheet material 40 are annularly formed on the surface of the flange 16B of the first heat medium inflow pipe 16 opposite to the side on which the pipe portion 16A is formed. Place in. Although not shown, the metal sheet material 38 and the brazed sheet material 40 are arranged in an annular shape on the flange 18B of the first heat medium outflow pipe 18 as well as the flange 16B of the first heat medium inflow pipe 16. To do.

これら金属シート材３８、及びろう付シート材４０の配置作業（配置動作）は、作業者又は装置によって行われる。また、溶融したろう材が金属粉末に吸引される後述の吸引効果が発揮される限りにおいて、金属シート材３８及びろう付シート材４０とは、隙間を有して配置されていてもよい。 The arrangement work (arrangement operation) of the metal sheet material 38 and the brazed sheet material 40 is performed by an operator or an apparatus. Further, the metal sheet material 38 and the brazed sheet material 40 may be arranged with a gap as long as the suction effect described later in which the molten brazing material is sucked into the metal powder is exhibited.

（接合工程）
接合工程では、図６（Ａ），（Ｂ）に示すように、まず、第１熱媒体流入管１６、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、及び第１熱媒体流出管１８を、この順で積層する。 (Joining process)
In the joining step, as shown in FIGS. 6A and 6B, first, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, and the second metal member 34, the first metal member 32, the second metal member 34, the first metal member 32, and the first heat medium outflow pipe 18 are laminated in this order.

次に、第１熱媒体流入管１６のフランジ１６Ｂの金属シート材３８、及びろう付シート材４０を第１金属部材３２の表面３２Ａの中央部に接触させる。このとき、第１熱媒体流入管１６と第１金属部材３２の矩形孔３６とを連通させる。 Next, the metal sheet material 38 of the flange 16B of the first heat medium inflow pipe 16 and the brazed sheet material 40 are brought into contact with the central portion of the surface 32A of the first metal member 32. At this time, the first heat medium inflow pipe 16 and the rectangular hole 36 of the first metal member 32 are communicated with each other.

第１金属部材３２と第２金属部材３４とは以下のように積層する。
先ず、第１金属部材３２の裏面３２Ｂに第２金属部材３４の第１凸部４４の頂部４４Ａを向かい合わせて第１金属部材３２と第２金属部材３４とを互いに押し付ける。これにより、図６（Ｂ）に示すように、第１金属部材３２の裏面３２Ｂに設けられた金属シート材３８及びろう付シート材４０が、第２金属部材３４の第１凸部４４の頂部４４Ａに接触すると共に、図７（Ｂ）に示すように、第２金属部材３４の第１折り曲げ部４８の端部が第１金属部材３２の裏面３２Ｂに当接する。 The first metal member 32 and the second metal member 34 are laminated as follows.
First, the top portion 44A of the first convex portion 44 of the second metal member 34 faces the back surface 32B of the first metal member 32, and the first metal member 32 and the second metal member 34 are pressed against each other. As a result, as shown in FIG. 6B, the metal sheet material 38 and the brazed sheet material 40 provided on the back surface 32B of the first metal member 32 are formed on the top of the first convex portion 44 of the second metal member 34. In addition to contacting 44A, as shown in FIG. 7B, the end of the first bent portion 48 of the second metal member 34 comes into contact with the back surface 32B of the first metal member 32.

そして、第２金属部材３４の平坦部３４Ａの第１凸部４４が突出している側とは反対側の面と、第１金属部材３２（図６（Ｂ）において、右から２番目第１金属部材３２）の表面３２Ａとを向かい合わせて第１金属部材３２と第２金属部材３４とを互いに押し付ける。これにより、第１金属部材３２の表面３２Ａの金属シート材３８及びろう付シート材４０が、第２金属部材３４の平坦部３４Ａに接触すると共に、図７（Ａ）に示すように、第２金属部材３４の第１凸部４４に設けられた第２折り曲げ部５０の端部が、第１金属部材３２の表面３２Ａに当接する。 Then, the surface of the flat portion 34A of the second metal member 34 opposite to the side on which the first convex portion 44 protrudes and the first metal member 32 (in FIG. 6B, the second first metal from the right). The first metal member 32 and the second metal member 34 are pressed against each other so that the surface 32A of the member 32) faces each other. As a result, the metal sheet material 38 and the brazed sheet material 40 on the surface 32A of the first metal member 32 come into contact with the flat portion 34A of the second metal member 34, and as shown in FIG. 7A, the second metal member member 32 comes into contact with the flat portion 34A. The end of the second bent portion 50 provided on the first convex portion 44 of the metal member 34 comes into contact with the surface 32A of the first metal member 32.

最後に、第１熱媒体流出管１８のフランジ１８Ｂを、図６（Ｂ）に示す最も左側の第１金属部材３２の裏面３２Ｂに設けた金属シート材３８、及びろう付シート材４０に当接させる。 Finally, the flange 18B of the first heat medium outflow pipe 18 is brought into contact with the metal sheet material 38 and the brazed sheet material 40 provided on the back surface 32B of the leftmost first metal member 32 shown in FIG. 6 (B). Let me.

そして、これら第１熱媒体流入管１６、第１金属部材３２、第２金属部材３４、第１熱媒体流出管１８を、これらの部材で金属シート材３８、及びろう付けシート材４０が挟持された状態で、図示せぬ加熱炉内に入れて、全体を加熱し、ろう材を溶融させる。なお、加熱炉内の温度については、Ｎｉ基ろう材は溶融するが、第１熱媒体流入管１６、第１金属部材３２、第２金属部材３４、及び第１熱媒体流出管１８は溶融しないように設定されている（例えば、１１００°Ｃ）。 Then, the metal sheet material 38 and the brazing sheet material 40 are sandwiched between the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, and the first heat medium outflow pipe 18. In this state, it is placed in a heating furnace (not shown) to heat the whole and melt the brazing material. Regarding the temperature inside the heating furnace, the Ni-based brazing material melts, but the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, and the first heat medium outflow pipe 18 do not melt. (For example, 1100 ° C).

接合工程では、各部材を積層した結果、第１熱媒体流入管１６、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、第２金属部材３４、第１金属部材３２、及び第１熱媒体流出管１８の順で積層された状態になっていればよい。すなわち、各部材を積層する作業（動作）の順番は、前述の順番でなくてもよい。 In the joining step, as a result of laminating each member, the first heat medium inflow pipe 16, the first metal member 32, the second metal member 34, the first metal member 32, the second metal member 34, the first metal member 32, the first The two metal members 34, the first metal member 32, and the first heat medium outflow pipe 18 may be laminated in this order. That is, the order of the work (operation) of laminating each member does not have to be the above-mentioned order.

これにより、金属シート材３８のバインダが蒸発すると共に、金属シート材３８を構成する金属粉末に溶融したろう材が吸引される（吸引効果）。そして、ろう材が金属粉末に含浸し、この含浸により金属粉末の表面にろう材が共晶結合することで、図８に示すような、複合ろう材５２が形成される。 As a result, the binder of the metal sheet material 38 evaporates, and the brazing material melted in the metal powder constituting the metal sheet material 38 is sucked (suction effect). Then, the brazing material is impregnated into the metal powder, and the brazing material is eutectic bonded to the surface of the metal powder by this impregnation, whereby the composite brazing material 52 as shown in FIG. 8 is formed.

さらに、金属粉末に含浸されたろう材は、第１金属部材３２及び第２金属部材３４の接合界面で拡散して第１金属部材３２及び第２金属部材３４と共晶結合する。そして、複合ろう材５２を冷却することで、第１金属部材３２と第２金属部材３４とが、複合ろう材５２により接合される（ろう付される）。 Further, the brazing material impregnated with the metal powder diffuses at the bonding interface of the first metal member 32 and the second metal member 34 and eutectic bond with the first metal member 32 and the second metal member 34. Then, by cooling the composite brazing material 52, the first metal member 32 and the second metal member 34 are joined (brazed) by the composite brazing material 52.

具体的には、第２金属部材３４の凹状空間４２の開口が第１金属部材３２で閉鎖されるように、第２金属部材３４の平坦部３４Ａと第１金属部材３２の表面３２Ａとが接合される。このように、第２金属部材３４の平坦部３４Ａと第１金属部材３２の表面３２Ａとが接合されることで、第２金属部材３４の凹状空間４２の開口が第１金属部材３２で閉鎖される。これにより、凹状空間４２を内部空間とする熱交換器本体１４が形成される。 Specifically, the flat portion 34A of the second metal member 34 and the surface 32A of the first metal member 32 are joined so that the opening of the concave space 42 of the second metal member 34 is closed by the first metal member 32. Will be done. By joining the flat portion 34A of the second metal member 34 and the surface 32A of the first metal member 32 in this way, the opening of the concave space 42 of the second metal member 34 is closed by the first metal member 32. To. As a result, the heat exchanger main body 14 having the concave space 42 as the internal space is formed.

また、第２金属部材３４の第１凸部４４に第１金属部材３２が接合されることで、第１凸部４４の外周側の周囲には、平坦部３４Ａと該第１金属部材３２との間に、矩形枠状の枠状空間４３が形成される（図１参照）。 Further, by joining the first metal member 32 to the first convex portion 44 of the second metal member 34, the flat portion 34A and the first metal member 32 are formed around the outer peripheral side of the first convex portion 44. A rectangular frame-shaped frame-shaped space 43 is formed between the two (see FIG. 1).

第１金属部材３２と第２金属部材３４とが接合された状態で、複合ろう材５２の厚さは、配置工程で第１金属部材３２に配置された金属シート材３８の厚さ及びろう付シート材４０の厚さと同等となっている。これは、後述するように、金属粉末が支柱（スペーサ）の役割を果たすためである。 With the first metal member 32 and the second metal member 34 joined, the thickness of the composite brazing material 52 is the thickness of the metal sheet material 38 arranged on the first metal member 32 and the brazing. It is equivalent to the thickness of the sheet material 40. This is because the metal powder acts as a support (spacer) as described later.

（収容工程）
収容工程では、第１熱媒体流入管１６の管部１６Ａが、筐体１２の本体１２Ａの孔２４に挿入されるように、第１熱媒体流入管１６と第１熱媒体流出管１８とが接合された熱交換器本体１４を、筐体１２の本体１２Ａに収容する。そして、第１熱媒体流出管１８が蓋部材１２Ｂの孔３０に挿入されるように、蓋部材１２Ｂを閉じることで熱交換器１０が製造される。なお、本体１２Ａと蓋部材１２Ｂとは、例えば、溶接により接合される。また、複合ろう材５２を用いて、本体１２Ａと蓋部材１２Ｂとを接合してもよい。 (Accommodation process)
In the accommodating step, the first heat medium inflow pipe 16 and the first heat medium outflow pipe 18 are inserted so that the pipe portion 16A of the first heat medium inflow pipe 16 is inserted into the hole 24 of the main body 12A of the housing 12. The joined heat exchanger main body 14 is housed in the main body 12A of the housing 12. Then, the heat exchanger 10 is manufactured by closing the lid member 12B so that the first heat medium outflow pipe 18 is inserted into the hole 30 of the lid member 12B. The main body 12A and the lid member 12B are joined by welding, for example. Further, the main body 12A and the lid member 12B may be joined by using the composite brazing material 52.

これにより、図１に示すように、第２金属部材３４の凹状空間４２と、第１熱媒体流入管１６の内部と、第１熱媒体流出管１８の内部とが連通し、熱交換器本体１４の内部には、第１熱媒体５４（図１において、密度の低い網点）が流通する第一流通空間５６が構成される。第１熱媒体５４としては、例えば、水を用いることができるが、水以外の液体や気体であっても良い。 As a result, as shown in FIG. 1, the concave space 42 of the second metal member 34, the inside of the first heat medium inflow pipe 16 and the inside of the first heat medium outflow pipe 18 communicate with each other, and the heat exchanger main body. Inside the 14, a first distribution space 56 through which the first heat medium 54 (a net point having a low density in FIG. 1) flows is configured. As the first heat medium 54, for example, water can be used, but a liquid or gas other than water may be used.

筐体１２の内部には、これら第１金属部材３２と第２金属部材３４の外側に、これら第１金属部材３２と第２金属部材３４によって第一流通空間５６と仕切られ、第２熱媒体５８（図１において、密度の高い網点）が流通する第二流通空間６０が構成される。第２熱媒体としては、例えば、水を用いることができるが、水以外の液体や気体であっても良い。 Inside the housing 12, the first metal member 32 and the second metal member 34 are separated from the first flow space 56 by the first metal member 32 and the second metal member 34, and the second heat medium is separated from the first flow space 56. A second distribution space 60 through which 58 (dense halftone dots in FIG. 1) circulates is configured. As the second heat medium, for example, water can be used, but a liquid or gas other than water may be used.

外側の第二流通空間６０を流通する第２熱媒体５８は、本体１２Ａの一方の側板部１２Ａｂに取り付けられた第２熱媒体流入管２０、及び本体１２Ａの他方の側板部１２Ａｃに取り付けられた第２熱媒体流出管２２を通じて筐体１２の内部に対して、流入及び流出するようになっている。
このように構成された熱交換器１０では、第一流通空間５６を流通する第１熱媒体５４と、第二流通空間６０を流通する第２熱媒体５８との間で熱交換がなされる。 The second heat medium 58 flowing through the outer second flow space 60 was attached to the second heat medium inflow pipe 20 attached to one side plate portion 12Ab of the main body 12A and to the other side plate portion 12Ac of the main body 12A. It flows in and out of the inside of the housing 12 through the second heat medium outflow pipe 22.
In the heat exchanger 10 configured in this way, heat exchange is performed between the first heat medium 54 flowing through the first distribution space 56 and the second heat medium 58 flowing through the second distribution space 60.

（本実施形態の作用、効果）
本実施形態では、前述のように、接合工程において、金属粉末にろう材が含浸して金属粉末の表面にろう材が共晶結合することで、複合ろう材５２が形成される。ここで、金属シート材３８を構成する金属粉末が、第１金属部材３２と第２金属部材３４とを接合する際に、支柱（スペーサ）の役割を果たす。このため、複合ろう材５２が押し潰されず、複合ろう材５２が任意の厚みを保持した状態を維持する。このように、本実施形態では、金属粉末を用いずろう材のみで接合する場合に比較し、ろう材の適正厚さを確保することができる。また、第２金属部材３４の平坦部３４Ａと、平板とされた第１金属部材３２とを接合するので、ろう付の厚み（接合間隔）が管理しやすい。 (Action and effect of this embodiment)
In the present embodiment, as described above, the composite brazing material 52 is formed by impregnating the metal powder with the brazing material and eutectic bonding the brazing material to the surface of the metal powder in the joining step. Here, the metal powder constituting the metal sheet material 38 plays a role of a support (spacer) when joining the first metal member 32 and the second metal member 34. Therefore, the composite brazing material 52 is not crushed, and the composite brazing material 52 maintains an arbitrary thickness. As described above, in the present embodiment, it is possible to secure an appropriate thickness of the brazing material as compared with the case where the brazing material is used alone without using the metal powder. Further, since the flat portion 34A of the second metal member 34 and the first metal member 32 formed as a flat plate are joined, the thickness of brazing (joining interval) can be easily managed.

さらに、本実施形態では、第２金属部材３４の第１折り曲げ部４８は、第２金属部材３４の平坦部３４Ａの縁部３４Ａａ、及び縁部３４Ａｂに設けられおり、第１折り曲げ部４８の端部（先端）が第１金属部材３２の裏面３２Ｂの外周縁部近傍に当接することで、第２金属部材３４の平坦部３４Ａが第１金属部材３２側へ変形すること、及び第１金属部材３２の外周縁付近が第２金属部材３４側へ変形することが抑えられ、第２金属部材３４の外周縁と第１金属部材３２の外周縁との間隔（枠状空間４３の厚さ）が狭くなることが抑制される。 Further, in the present embodiment, the first bent portion 48 of the second metal member 34 is provided on the edge portion 34Aa and the edge portion 34Ab of the flat portion 34A of the second metal member 34, and the end of the first bent portion 48. When the portion (tip) abuts near the outer peripheral edge of the back surface 32B of the first metal member 32, the flat portion 34A of the second metal member 34 is deformed toward the first metal member 32, and the first metal member The vicinity of the outer peripheral edge of the 32 is suppressed from being deformed toward the second metal member 34, and the distance between the outer peripheral edge of the second metal member 34 and the outer peripheral edge of the first metal member 32 (thickness of the frame-shaped space 43) is increased. Narrowing is suppressed.

さらに、第２金属部材３４の第２折り曲げ部５０は、第１凸部４４の頂部４４Ａの中央付近に設けられているため、第２折り曲げ部５０の端部（先端）が第１金属部材３２の表面３２Ａに当接することで、頂部４４Ａが第１金属部材３２側に変形すること、及び第１金属部材３２の中央付近が第２金属部材３４側へ変形することが抑えられ、第２金属部材３４の頂部４４Ａと第１金属部材３２との間隔（凹状空間４２の厚さ）が狭くなることが抑制される。 Further, since the second bent portion 50 of the second metal member 34 is provided near the center of the top portion 44A of the first convex portion 44, the end portion (tip) of the second bent portion 50 is the first metal member 32. By abutting on the surface 32A of the metal member 32A, the top portion 44A is prevented from being deformed toward the first metal member 32, and the vicinity of the center of the first metal member 32 is prevented from being deformed toward the second metal member 34. The narrowing of the distance (thickness of the concave space 42) between the top 44A of the member 34 and the first metal member 32 is suppressed.

このようにして、全ての第１金属部材３２と第２金属部材３４とを積層し、全ての第２金属部材３４の第１折り曲げ部４８の端部、及び第２折り曲げ部５０の端部を第１金属部材３２に当接させることで、熱交換器本体１４の積層方向の高さ寸法を維持、管理できる。 In this way, all the first metal members 32 and the second metal members 34 are laminated, and the ends of the first bent portion 48 and the ends of the second bent portions 50 of all the second metal members 34 are formed. By bringing it into contact with the first metal member 32, the height dimension of the heat exchanger main body 14 in the stacking direction can be maintained and managed.

図９（Ａ）に示すように、第１折り曲げ部４８の高さをＨ１、第１凸部４４の高さをｈ１、上側の第１金属部材３２の裏面３２Ｂに設けられた金属シート材３８の高さをｔ１としたときに、Ｈ１≦ｈ１＋ｔ１とすることが好ましい。Ｈ１＞ｈ１＋ｔ１とすると、第１金属部材３２の金属シート材３８が第２金属部材３４の第１凸部４４の頂部４４Ａに接触しなくなる。 As shown in FIG. 9A, the height of the first bent portion 48 is H1, the height of the first convex portion 44 is h1, and the metal sheet material 38 provided on the back surface 32B of the upper first metal member 32. When the height of is t1, it is preferable that H1 ≦ h1 + t1. When H1> h1 + t1, the metal sheet material 38 of the first metal member 32 does not come into contact with the top portion 44A of the first convex portion 44 of the second metal member 34.

また、図９（Ｂ）に示すように、第２折り曲げ部５０の高さをＨ２、下側の第１金属部材３２の表面３２Ａに設けられた金属シート材３８の高さをｔ２としたときに、Ｈ２≦ｈ１＋ｔ２とすることが好ましい。Ｈ２＞ｈ１＋ｔ２とすると、第１金属部材３２の金属シート材３８が第２金属部材３４の平坦部３４Ａに接触しなくなる。 Further, as shown in FIG. 9B, when the height of the second bent portion 50 is H2 and the height of the metal sheet material 38 provided on the surface 32A of the lower first metal member 32 is t2. In addition, it is preferable that H2 ≦ h1 + t2. When H2> h1 + t2, the metal sheet material 38 of the first metal member 32 does not come into contact with the flat portion 34A of the second metal member 34.

なお、本実施形態では、第１折り曲げ部４８、及び第２折り曲げ部５０が第２金属部材３４の縁部から一体的に突出した部分で構成されているため、第１折り曲げ部４８、及び第２折り曲げ部５０を別部品として用意する必要が無く、部品点数を最小限に抑えることができる。 In the present embodiment, since the first bent portion 48 and the second bent portion 50 are integrally projected from the edge portion of the second metal member 34, the first bent portion 48 and the second bent portion 48 are formed. 2 It is not necessary to prepare the bent portion 50 as a separate part, and the number of parts can be minimized.

［第２の実施形態］
次に、本発明の第２の実施形態に係る熱交換器１０を図１０、及び図１１にしたがって説明する。なお、第１の実施形態と同一構成には同一符号を付し、その説明は省略する。 [Second Embodiment]
Next, the heat exchanger 10 according to the second embodiment of the present invention will be described with reference to FIGS. 10 and 11. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

本実施形態の熱交換器本体１４では、第１の実施形態の第２金属部材３４に代えて、図１０（Ａ）に示す第２金属部材６２が用いられている。本実施形態の第２金属部材６２は、平坦部６２Ａの中央に平面視で矩形状とされた第１凸部６４が形成され、第１凸部６４の頂部６４Ａの中央に、平面視で矩形状とされた第２凸部６６が形成されている。第２凸部６６の頂部６６Ａの中央には、矩形孔６８が形成されており、この矩形孔６８の縁部に第２折り曲げ部７０が形成されている。また、第２金属部材６２の平坦部６２Ａの各辺の縁部には、第１折り曲げ部７２が形成されている。 In the heat exchanger main body 14 of the present embodiment, the second metal member 62 shown in FIG. 10A is used instead of the second metal member 34 of the first embodiment. In the second metal member 62 of the present embodiment, a first convex portion 64 having a rectangular shape in a plan view is formed in the center of the flat portion 62A, and a rectangular shape in a plan view is formed in the center of the top 64A of the first convex portion 64. A shaped second convex portion 66 is formed. A rectangular hole 68 is formed in the center of the top portion 66A of the second convex portion 66, and a second bent portion 70 is formed at the edge of the rectangular hole 68. Further, a first bent portion 72 is formed at an edge of each side of the flat portion 62A of the second metal member 62.

図１０（Ｂ）、及び図１１に示すように、本実施形態の熱交換器本体１４は、複数枚の第２金属部材６２と第１金属部材３２とが積層され、図１１に示すように、第２金属部材６２の第１折り曲げ部７２が一方の第１金属部材３２の裏面３２Ｂに当接し、第２金属部材６２の第２折り曲げ部７０が他方の第１金属部材３２の表面３２Ａに当接している。 As shown in FIGS. 10B and 11, in the heat exchanger main body 14 of the present embodiment, a plurality of second metal members 62 and first metal members 32 are laminated, and as shown in FIG. , The first bent portion 72 of the second metal member 62 abuts on the back surface 32B of one first metal member 32, and the second bent portion 70 of the second metal member 62 comes into contact with the surface 32A of the other first metal member 32. It is in contact.

図１１に示すように、図面の最も左側の第２金属部材６２において、第２凸部６６の頂部６６Ａに第１熱媒体流出管１８のフランジ１８Ｂが接合されている。
本実施形態においても、第１の実施形態と同様に、準備工程と、配置工程と、接合工程と、収容工程とを経て、熱交換器１０が製造される。 As shown in FIG. 11, in the second metal member 62 on the leftmost side of the drawing, the flange 18B of the first heat medium outflow pipe 18 is joined to the top 66A of the second convex portion 66.
In the present embodiment as well, as in the first embodiment, the heat exchanger 10 is manufactured through the preparation step, the arrangement step, the joining step, and the accommodating step.

本実施形態では、８個の第１金属部材３２と８個の第２金属部材６２とが交互に積層されているが、第１折り曲げ部７２が一方の第１金属部材３２の裏面３２Ｂに当接し、第２折り曲げ部７０が他方の第１金属部材３２の表面３２Ａに当接することで、第１の実施形態と同様に、熱交換器本体１４の積層方向の高さ寸法を維持、管理できる。 In the present embodiment, eight first metal members 32 and eight second metal members 62 are alternately laminated, but the first bent portion 72 hits the back surface 32B of one of the first metal members 32. When the second bent portion 70 comes into contact with the surface 32A of the other first metal member 32, the height dimension of the heat exchanger main body 14 in the stacking direction can be maintained and managed as in the first embodiment. ..

また、本実施形態によれば、第２金属部材６２が複数の第１凸部６４、及び第２凸部６６を有するため、第１熱媒体５４、及び第２熱媒体５８と接触する第２金属部材６２の表面積が増え、第１熱媒体５４と第２熱媒体５８との熱交換効率を向上させることができる。
［第３の実施形態］
次に、本発明の第３の実施形態を図１２、及び図１３にしたがって説明する。本実施形態は、第２の実施形態の変形例であり、第２の実施形態と同一構成には同一符号を付し、その説明は省略する。 Further, according to the present embodiment, since the second metal member 62 has a plurality of first convex portions 64 and second convex portions 66, the second metal member 62 comes into contact with the first heat medium 54 and the second heat medium 58. The surface area of the metal member 62 is increased, and the heat exchange efficiency between the first heat medium 54 and the second heat medium 58 can be improved.
[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. 12 and 13. This embodiment is a modification of the second embodiment, and the same components as those of the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図１２、及び図１３に示すように、本実施形態の熱交換器本体１４では、第２の実施形態の第２金属部材６２に代えて、図１２に示す第２金属部材７４が用いられている。
本実施形態の第２金属部材７４では、第１凸部６４の頂部６４Ａに、第１凸部６４の突出する側に突出する複数（本実施形態では４個）の円錐台形状の突起７６と、第１凸部６４の突出する側にとは反対側に突出する複数（本実施形態では４個）の突起７８とが設けられている。これらの突起７６、及び突起７８は、プレス加工により押出し成形されている。 As shown in FIGS. 12 and 13, in the heat exchanger main body 14 of the present embodiment, the second metal member 74 shown in FIG. 12 is used instead of the second metal member 62 of the second embodiment. There is.
In the second metal member 74 of the present embodiment, the top 64A of the first convex portion 64 has a plurality of (four in the present embodiment) truncated cone-shaped protrusions 76 protruding toward the protruding side of the first convex portion 64. , A plurality of (four in the present embodiment) protrusions 78 that protrude on the opposite side to the protruding side of the first convex portion 64 are provided. These protrusions 76 and 78 are extruded by press working.

第１金属部材３２と第２金属部材７４とを積層した際に、突起７６は、第１凸部６４の突出側に配置される第１金属部材３２の裏面３２Ｂに当接し、突起７８は、第１凸部６４の突出側とは反対側に配置される第１金属部材３２の表面３２Ａに当接する。 When the first metal member 32 and the second metal member 74 are laminated, the protrusion 76 comes into contact with the back surface 32B of the first metal member 32 arranged on the protruding side of the first convex portion 64, and the protrusion 78 is formed. It abuts on the surface 32A of the first metal member 32 arranged on the side opposite to the protruding side of the first convex portion 64.

本実施形態においても、前述の製造方法と同様に、準備工程と、配置工程と、接合工程と、収容工程とを経て、熱交換器１０が製造される。 Also in the present embodiment, the heat exchanger 10 is manufactured through the preparation step, the placement step, the joining step, and the accommodating step, as in the above-mentioned manufacturing method.

本実施形態では、第２金属部材７４の第１凸部６４の頂部６４Ａに設けた突起７６、及び突起７８が、一方の第１金属部材３２、及び他方の第１金属部材３２に当接することで、第２金属部材７４においては頂部６４Ａの変形が抑えられ、第１金属部材３２においては、頂部６４Ａと対向する部分の変形が抑えられる。 In the present embodiment, the protrusion 76 and the protrusion 78 provided on the top 64A of the first convex portion 64 of the second metal member 74 come into contact with one first metal member 32 and the other first metal member 32. Therefore, the deformation of the top portion 64A is suppressed in the second metal member 74, and the deformation of the portion facing the top portion 64A is suppressed in the first metal member 32.

また、本実施形態では、第２金属部材７４では、突起７６、及び突起７８を設けた分だけ、第２金属部材７４の表面積が増え、更に熱交換効率を向上させることができる。 Further, in the present embodiment, in the second metal member 74, the surface area of the second metal member 74 is increased by the amount of the protrusion 76 and the protrusion 78, and the heat exchange efficiency can be further improved.

［第４の実施形態］
次に、本発明の第４の実施形態を図１４乃至図１７にしたがって説明する。なお、本実施形態は、第２の実施形態の変形例であり、第２の実施形態と同一構成には同一符号を付し、その説明は省略する。 [Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 14 to 17. It should be noted that this embodiment is a modification of the second embodiment, and the same components as those of the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

本実施形態では、第２の実施形態の第１金属部材３２に代えて、図１４に示す第１金属部材８０が用いられ、第２の実施形態の第２金属部材６２に代えて、図１５に示す第２金属部材８２が用いられている。 In the present embodiment, the first metal member 80 shown in FIG. 14 is used instead of the first metal member 32 of the second embodiment, and the second metal member 62 of the second embodiment is replaced with FIG. The second metal member 82 shown in the above is used.

図１４に示すように、本実施形態の第１金属部材８０には、２個の矩形孔３６が形成されている。 As shown in FIG. 14, two rectangular holes 36 are formed in the first metal member 80 of the present embodiment.

図１５に示すように、本実施形態の第２金属部材８２は、第１凸部６４の頂部６４Ａに、平面視で矩形状とされた第２凸部６６が間隔を開けて２個形成されている。各々の第２凸部６６の頂部６６Ａの中央に、矩形孔６８が形成されており、この矩形孔６８の縁部に形成された第２折り曲げ部７０が図１７に示すように、第１金属部材８０の表面８０Ａに当接している。 As shown in FIG. 15, in the second metal member 82 of the present embodiment, two second convex portions 66 having a rectangular shape in a plan view are formed on the top portion 64A of the first convex portion 64 at intervals. ing. A rectangular hole 68 is formed in the center of the top 66A of each second convex portion 66, and the second bent portion 70 formed at the edge of the rectangular hole 68 is a first metal as shown in FIG. It is in contact with the surface 80A of the member 80.

図１５に示すように、第２金属部材８２第１凸部６４の頂部６４Ａには、第１凸部６４の突出している側に突出する矩形状の突起８４と、第１凸部６４の突出している側とは反対側に突出する矩形状の突起８６とが、第２凸部６６と第２凸部６６との間に設けられている。これらの突起８４、及び突起８６は、プレス加工により押出し成形されている。 As shown in FIG. 15, on the top 64A of the second metal member 82 first convex portion 64, a rectangular protrusion 84 protruding toward the protruding side of the first convex portion 64 and a protrusion of the first convex portion 64 A rectangular protrusion 86 that protrudes to the side opposite to the side where the metal is formed is provided between the second convex portion 66 and the second convex portion 66. These protrusions 84 and 86 are extruded by press working.

本実施形態では、図１６、及び図１７に示すように、第１金属部材８０と第２金属部材８２とが積層されることで熱交換器本体１４が構成され、この熱交換器本体１４に２本の第１熱媒体流入管１６、及び２本の第１熱媒体流出管１８が接続される。 In the present embodiment, as shown in FIGS. 16 and 17, the heat exchanger main body 14 is formed by laminating the first metal member 80 and the second metal member 82, and the heat exchanger main body 14 is formed. Two first heat medium inflow pipes 16 and two first heat medium outflow pipes 18 are connected.

第１金属部材８０と第２金属部材８２とが積層されると、第２金属部材８２の突起８４が、一方の第１金属部材８０の裏面８０Ｂに当接し、突起８６が、他方の第１金属部材８０の表面８０Ａに当接するため、第１金属部材８０、及び第２金属部材８２の中央付近の変形が抑えられる。 When the first metal member 80 and the second metal member 82 are laminated, the protrusion 84 of the second metal member 82 comes into contact with the back surface 80B of one first metal member 80, and the protrusion 86 comes into contact with the other first metal member 80. Since it comes into contact with the surface 80A of the metal member 80, deformation of the first metal member 80 and the second metal member 82 near the center is suppressed.

これにより、本実施形態の熱交換器１０では、前述した実施形態と同様に、熱交換器本体１４の積層方向の高さ寸法を維持、管理できる。 Thereby, in the heat exchanger 10 of the present embodiment, the height dimension of the heat exchanger main body 14 in the stacking direction can be maintained and managed as in the above-described embodiment.

また、本実施形態の第２金属部材８２では、第１凸部６４の頂部６４Ａに第２凸部６６が２個形成され、さらに、頂部６４Ａに突起８４、及び突起８６が形成されているため、第３の実施形態の第２金属部材７４に比較して表面積が増え、更に熱交換効率を向上させることができる。 Further, in the second metal member 82 of the present embodiment, two second convex portions 66 are formed on the top 64A of the first convex portion 64, and further, the protrusion 84 and the protrusion 86 are formed on the top 64A. , The surface area is increased as compared with the second metal member 74 of the third embodiment, and the heat exchange efficiency can be further improved.

（第５の実施形態）
次に、本発明の第５の実施形態を図１８、及び図１９にしたがって説明する。なお、本実施形態は、第４の実施形態の変形例であり、第４の実施形態と同一構成には同一符号を付し、その説明は省略する。 (Fifth Embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. 18 and 19. It should be noted that this embodiment is a modification of the fourth embodiment, and the same components as those of the fourth embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図１８、及び図１９に示すように、本実施形態の熱交換器１０では、第４の実施形態の熱交換器本体１４と略同一の構成とされているが、図１９の図面最も右側の第１金属部材８０が筐体１２の本体１２Ａの内壁面にろう付されている点、一方の第２凸部６６に第１熱媒体流入管１６が接続され、他方の第２凸部６６に第１熱媒体流出管１８が接続されている点が第４の実施形態と異なる。 As shown in FIGS. 18 and 19, the heat exchanger 10 of the present embodiment has substantially the same configuration as the heat exchanger main body 14 of the fourth embodiment, but is on the far right side of the drawing of FIG. The point where the first metal member 80 is brazed to the inner wall surface of the main body 12A of the housing 12, the first heat medium inflow pipe 16 is connected to one second convex portion 66, and the other second convex portion 66. It differs from the fourth embodiment in that the first heat medium outflow pipe 18 is connected.

本実施形態の熱交換器１０においても、第４の実施形態と同様に、熱交換器本体１４の積層方向の高さ寸法を維持、管理できる。
また、本実施形態の熱交換器１０では、熱交換器本体１４の片側に第１熱媒体流入管１６、及び第１熱媒体流出管１８が配置されているため、図面左右方向の寸法を詰めることができる。 Similarly to the fourth embodiment, the heat exchanger 10 of the present embodiment can maintain and manage the height dimension of the heat exchanger main body 14 in the stacking direction.
Further, in the heat exchanger 10 of the present embodiment, since the first heat medium inflow pipe 16 and the first heat medium outflow pipe 18 are arranged on one side of the heat exchanger main body 14, the dimensions in the left-right direction of the drawing are reduced. be able to.

（その他の実施形態）
本発明は、上記の実施形態に限るものではなく、その主旨を逸脱しない範囲内において種々の変形、変更、改良が可能である。例えば、上記に示した変形例は、適宜、複数を組み合わせて構成してもよい。 (Other embodiments)
The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made within a range that does not deviate from the gist thereof. For example, the above-mentioned modified examples may be configured by combining a plurality of them as appropriate.

上記第１の実施形態では、第２金属部材３４に第１空間確保部としての第１折り曲げ部４８が設けられていたが、本発明はこれに限らず、第１金属部材３２に端縁に第１折り曲げ部４８を形成し、その第１折り曲げ部４８を第２金属部材３４に当接させても良い。 In the first embodiment, the second metal member 34 is provided with the first bent portion 48 as the first space securing portion, but the present invention is not limited to this, and the first metal member 32 is provided at the edge. The first bent portion 48 may be formed, and the first bent portion 48 may be brought into contact with the second metal member 34.

上記実施形態では、本発明のプレート構造を熱交換器本体１４に適用した例を示したが、本発明のプレート構造は、２種類の金属部材を積層する熱交換器本体以外の構成にも適用可能である。 In the above embodiment, an example in which the plate structure of the present invention is applied to the heat exchanger main body 14 is shown, but the plate structure of the present invention is also applied to a configuration other than the heat exchanger main body in which two types of metal members are laminated. It is possible.

１４熱交換器本体（積層体）
３２第１金属部材
３４第２金属部材
４２凹状空間（空間）
４３枠状空間（空間）
４４第１凸部（凸部）
４８第１折り曲げ部（第１空間確保部）
５０第２折り曲げ部（第１空間確保部）
６２第２金属部材
６４第１凸部（凸部）
７２第１折り曲げ部（第１空間確保部）
７０第２折り曲げ部（第１空間確保部）
７４第２金属部材
７６突起（第２空間確保部）
７８突起（第２空間確保部）
８０第１金属部材
８２第２金属部材
８４突起（第２空間確保部）
８６突起（第２空間確保部） 14 Heat exchanger body (laminated body)
32 First metal member 34 Second metal member 42 Concave space (space)
43 Frame-shaped space (space)
44 First convex part (convex part)
48 1st bending part (1st space securing part)
50 2nd bending part (1st space securing part)
62 Second metal member 64 First convex portion (convex portion)
72 1st bending part (1st space securing part)
70 2nd bending part (1st space securing part)
74 Second metal member 76 Protrusion (second space securing part)
78 protrusion (second space securing part)
80 1st metal member 82 2nd metal member 84 Protrusion (2nd space securing part)
86 protrusion (second space securing part)

Claims

A laminated body in which a flat plate-shaped first metal member and a second metal member having a convex portion forming a space between the first metal member are alternately laminated.
It is composed of a bonding brazing material and a metal powder, is sandwiched between the first metal member and the second metal member in the laminating direction of the laminated body, and is said to have a thickness maintained in the laminating direction . A composite brazing material that joins one metal member and the second metal member,
It is provided on the edge of either one of the first metal member and the second metal member, and abuts on the other of the first metal member and the second metal member in a non-bonded state to enter the space. A first space securing unit that keeps a distance between the corresponding first metal member and the second metal member,
Plate structure with.

The plate structure according to claim 1, wherein the first space securing portion is a portion integrally protruding from an edge portion of either one of the first metal member and the second metal member.

The first or second aspect, wherein H ≦ h + t, where H is the height of the first space securing portion, h is the height of the convex portion, and t is the height of the composite brazing material. Plate structure.

The flat portion of either one of the first metal member and the second metal member is in contact with the other of the first metal member and the second metal member, and the first metal member and the first metal member are in contact with each other. 2. The plate structure according to any one of claims 1 to 3, wherein a second space securing portion for maintaining a distance from the metal member is formed.