JP2012037136A - High-density laminated heat exchanger - Google Patents

High-density laminated heat exchanger Download PDF

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JP2012037136A
JP2012037136A JP2010177492A JP2010177492A JP2012037136A JP 2012037136 A JP2012037136 A JP 2012037136A JP 2010177492 A JP2010177492 A JP 2010177492A JP 2010177492 A JP2010177492 A JP 2010177492A JP 2012037136 A JP2012037136 A JP 2012037136A
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heat exchanger
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JP5601928B2 (en
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Takashi Igami
多加司 伊神
Yuta Kobayashi
勇太 小林
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T Rad Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger which has large heat capacity and is compact by laminating plates for inner fins to high density, and to prevent respective plate parts from being clogged with solder owing to soldering.SOLUTION: Fin plates 5 made of thin and long metal plates are laminated up in a thickness direction, and a height direction is matched with an internal height of a flat heat exchanger body 4. Then only both height-directional end faces of each fin plates 5 and the internal surface of a body plate 1 constituting the heat exchanger body 4 are soldered and fixed, and the fin plates 5 are not soldered to each other.

Description

本発明は、多数のインナーフィンを積層し、それらの外周をカッププレートで被蔽し、内部に冷却液を通し、カッププレート上の発熱体を冷却するヒートシンクに最適な熱交換器に関する。   The present invention relates to a heat exchanger optimal for a heat sink in which a large number of inner fins are laminated, the outer periphery thereof is covered with a cup plate, a cooling liquid is passed through the inside, and a heating element on the cup plate is cooled.

本出願人は、下記特許文献に記載の発明をすでに提案している。
これは各インナーフィンがプレス打ち抜き加工されて、それが多数の並列した縦部材とその縦部材間を連結する斜めの部材とで構成する。そして、その各インナーフィンを積層してそれぞれの縦部材を整合させるとともに、斜め部材は互いに重ならないように配置したものである。そして、積層方向の上下両端に端板を配置し、その端板に被冷却用の発熱体を接合したものである。 The present applicant has already proposed the inventions described in the following patent documents.
Each of the inner fins is formed by press punching, which is composed of a large number of juxtaposed vertical members and diagonal members that connect the vertical members. The inner fins are stacked to align the vertical members, and the diagonal members are arranged so as not to overlap each other. Then, end plates are arranged at both upper and lower ends in the stacking direction, and a heating element to be cooled is joined to the end plates.

特開２０１０−１１４１７４号公報JP 2010-114174 A

上記特許文献に記載の熱交換器は、インナーフィンをその板厚方向に積層したものであり、発熱体からの熱がその積層方向に伝熱される。その伝熱を良好に行なうため、各インナーフィンの表面にはろう材が被覆されたものが用いられ、それらを積層して組立てた状態で全体を高温の炉内に挿入し、一体にろう付け固定したものである。   The heat exchanger described in the above-mentioned patent document is formed by laminating inner fins in the plate thickness direction, and heat from the heating element is transferred in the laminating direction. In order to perform the heat transfer satisfactorily, the surface of each inner fin is coated with a brazing material, and the whole is assembled in a state of being laminated and assembled, and brazed together. It is fixed.

ところが、本発明者の実験によれば、各インナーフィンの縦部材の間隔をより狭くし、高密度にすると、その隙間にろう付け時のろう材が保持され、目詰まりを生じることがあった。それを避けるにはインナーフィンの並列した縦部材の間隔を広くする必要があり、その場合には伝熱面積が小さくなり、熱交換性能が低下するという別の問題が生じた。
そこで、本発明は可能な限り高密度で且つ、ろう材による目詰まりがなく、伝熱性の高い積層型熱交換器を提供することを課題とする。 However, according to the experiments of the present inventors, when the interval between the vertical members of the inner fins is made narrower and the density is increased, the brazing material at the time of brazing is held in the gap, which may cause clogging. . In order to avoid this, it is necessary to widen the interval between the longitudinal members in which the inner fins are arranged in parallel. In this case, another problem arises that the heat transfer area is reduced and the heat exchange performance is lowered.
Therefore, an object of the present invention is to provide a laminated heat exchanger having a high density as much as possible and being free from clogging with a brazing material and having a high heat transfer property.

請求項１に記載の発明は、少なくとも一方が溝状に形成された一対の細長い本体プレート(1)を有し、その一対の本体プレート(1)の幅方向の縁部どうしが互いに接合されて内部に、その幅ｗがその高さｈに比して著しく広い偏平な流路(2)を形成し、その内部に冷却液(3)がその長手方向に流通し、偏平な外面に被冷却用の発熱体(16)が接続される熱交換器本体(4)と、
その熱交換器本体(4)の前記偏平な流路に挿入され、多数の細長いフィンプレート(5)がその厚み方向へ高密度に積層されるフィンプレート積層体(6)と、
を具備する高密度積層型熱交換器において、
それぞれの前記フィンプレート(5)は、前記偏平な流路(2)の前記高さｈに整合する高さを有する平坦な細長い金属板からなり、その金属板にプレス成形によりその厚み方向に、凸部(7)が複数互いに離間して突設され、
隣接するフィンプレート(5)の凸部(7)どうしまたは、その凸部(7)とフィンプレート(5)とが互いに接触して、全体が前記溝状の幅ｗに整合する前記フィンプレート積層体(6)を構成し、
前記本体プレート(1)と、各フィンプレート(5)の高さ方向の両端面とのみがろう付けされ、各フィンプレート(5)どうしは、ろう付けされないように構成した高密度積層型熱交換器である。 The invention according to claim 1 has a pair of elongated body plates (1) at least one of which is formed in a groove shape, and the edges in the width direction of the pair of body plates (1) are joined to each other. A flat flow path (2) whose width w is significantly wider than its height h is formed inside, and the cooling liquid (3) flows in the longitudinal direction inside, and the flat outer surface is cooled. A heat exchanger body (4) to which the heating element (16) for
A fin plate laminate (6) that is inserted into the flat flow path of the heat exchanger body (4), and a large number of elongated fin plates (5) are laminated at a high density in the thickness direction;
In a high-density laminated heat exchanger comprising:
Each of the fin plates (5) is composed of a flat and elongated metal plate having a height matching the height h of the flat channel (2), and the metal plate is press-formed in the thickness direction thereof. A plurality of convex portions (7) are provided apart from each other,
Adjacent fin plate (5) protrusions (7), or the protrusions (7) and fin plate (5) are in contact with each other, and the fin plate stack is aligned with the groove width w. Compose the body (6),
Only the main body plate (1) and both end faces in the height direction of each fin plate (5) are brazed, and the fin plates (5) are configured so as not to be brazed. It is a vessel.

請求項２に記載の本発明は、請求項１に記載の高密度積層型熱交換器において、
前記本体プレート(1)の内面には、ろう材(1a)が被覆された金属板が用いられ、各フィンプレート(5)の表面にはろう材が存在しない金属板が用いられ、それらの組立て体が炉内で一体にろう付け固定されてなる高密度積層型熱交換器である。 According to a second aspect of the present invention, in the high-density stacked heat exchanger according to the first aspect,
A metal plate coated with a brazing material (1a) is used for the inner surface of the main body plate (1), and a metal plate with no brazing material is used for the surface of each fin plate (5). This is a high-density laminated heat exchanger in which the body is brazed and fixed together in a furnace.

請求項３に記載の本発明は、請求項１または請求項２に記載の高密度積層型熱交換器において、
前記フィンプレート(5)の前記各凸部(7)は、プレス機械により、抜き孔加工を半分行った半抜きにより形成されまたは、厚み方向に切り起こし形成されたものからなり、隣接するフィンプレート(5)間の隙間とそのフィンプレート(5)の板厚とが略同一となる高密度積層型熱交換器である。 According to a third aspect of the present invention, in the high-density stacked heat exchanger according to the first or second aspect,
Each of the convex portions (7) of the fin plate (5) is formed by half punching by punching a hole by a press machine, or formed by cutting and raising in the thickness direction, and adjacent fin plates (5) This is a high-density stacked heat exchanger in which the gap between the fin plates (5) and the thickness of the fin plate (5) are substantially the same.

本発明の高密度積層型熱交換器は、細長い金属板からなる多数のフィンプレート５を積層して、フィンプレート積層体６とする。そして、それを熱交換器本体４の流路２に挿入し、その本体プレート１と、各フィンプレート５の高さ方向両端面と、のみがろう付けされている。そして、フィンプレート５どうしはろう付けされないように構成したから、ろう材の量を可及的に少なくし、流路内のフィンプレート積層体６が高密度であっても、ろう付け時にろう材による目詰まりを生じることがない。
しかも、各フィンプレート５はその高さ方向に本体プレート１とろう付けされ、その本体プレート１の偏平な外面に被冷却用の発熱体16が接触されるので、その熱は本体プレート１を介して直接各フィンプレート５に伝熱され、内部を流通する冷却液３によって効率よく熱交換される。 The high-density laminated heat exchanger of the present invention forms a fin plate laminate 6 by laminating a large number of fin plates 5 made of elongated metal plates. And it is inserted in the flow path 2 of the heat exchanger main body 4, and only the main body plate 1 and the height direction both end surfaces of each fin plate 5 are brazed. Since the fin plates 5 are configured not to be brazed, the amount of the brazing material is reduced as much as possible, and the brazing material is brazed at the time of brazing even if the fin plate laminate 6 in the flow path has a high density. It will not cause clogging.
Moreover, each fin plate 5 is brazed to the main body plate 1 in the height direction, and the heat generating body 16 to be cooled is brought into contact with the flat outer surface of the main body plate 1, so that the heat passes through the main body plate 1. Then, the heat is directly transferred to each fin plate 5 and is efficiently exchanged by the coolant 3 flowing inside.

上記構成において、本体プレート１の内面にろう材1ａを被覆し、フィンプレート５表面にはそれが存在しないようにした場合には、ろう材による目詰まりのない高密度積層型熱交換器を容易に製造できる。
上記構成において、請求項３に記載のように各フィンプレート５の凸部７をプレスにより、抜き孔加工を半分行なった半抜きにし、または、厚み方向に切り起こし形成されたものからなり、隣接するフィンプレート５間の隙間をそのフィンプレート５の板厚と略同一にした場合には、高密度でコンパクトな伝熱性の良い熱交換器を容易に量産できる。 In the above configuration, when the inner surface of the main body plate 1 is coated with the brazing material 1a and is not present on the surface of the fin plate 5, a high-density laminated heat exchanger that is not clogged by the brazing material is easy. Can be manufactured.
In the above-described configuration, the convex portion 7 of each fin plate 5 is formed by half-cutting a punched hole by pressing, or by cutting and raising in the thickness direction, as described in claim 3. When the gap between the fin plates 5 to be made is substantially the same as the plate thickness of the fin plates 5, a high-density and compact heat exchanger with good heat transfer can be easily mass-produced.

本発明の高密度積層型熱交換器の要部斜視略図。The principal part perspective schematic of the high-density lamination type heat exchanger of the present invention. 同要部平面図並びにそのＢ-Ｂ矢視断面図。The principal part top view and its BB arrow sectional drawing. 同熱交換器の分解斜視図。The exploded perspective view of the heat exchanger. 同高密度積層型熱交換器14の斜視図。FIG. 2 is a perspective view of the high-density laminated heat exchanger 14. 図４のＶ−Ｖ矢視断面図であって、ろう付け前の状態を示す。FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 and shows a state before brazing. 同ろう付け後の状態を示す。The state after brazing is shown. 本発明の高密度積層型熱交換器の他の例の要部斜視略図。The principal part schematic perspective view of the other example of the high-density laminated heat exchanger of this invention. 同熱交換器の要部断面図であって、ろう付け後の状態を示す。It is principal part sectional drawing of the same heat exchanger, Comprising: The state after brazing is shown.

次に、図面に基づいて本発明の実施の形態につき説明する。
本発明の高密度積層型熱交換器14は、図３に示すごとく上下一対の本体プレート１とその内部に挿入されるフィンプレート積層体６とを有する。
本体プレート１は、周縁にフランジ部13を有する細長く浅い皿状に形成され、その長手方向両端にそれぞれ半筒部10が形成されている。上下一対の本体プレート１を各フランジ部13が接触するように重ね合わせたとき、内部に流路２が形成される。その流路２の高さｈは、その幅ｗに比べて著しく小である。各本体プレート１はこの例ではアルミニウム材からなり、その内面側にろう材が被覆されたものが用いられる。また、本体プレート１の長手方向両端には一対の出入口パイプ11が嵌着される。 Next, embodiments of the present invention will be described with reference to the drawings.
The high-density laminated heat exchanger 14 of the present invention has a pair of upper and lower body plates 1 and a fin plate laminated body 6 inserted into the body plate 1 as shown in FIG.
The main body plate 1 is formed in an elongated and shallow dish shape having a flange portion 13 on the periphery, and half cylinder portions 10 are formed at both ends in the longitudinal direction. When the pair of upper and lower body plates 1 are overlapped so that the flange portions 13 are in contact with each other, the flow path 2 is formed inside. The height h of the flow path 2 is significantly smaller than the width w. In this example, each main body plate 1 is made of an aluminum material, and the inner surface side thereof is coated with a brazing material. A pair of inlet / outlet pipes 11 are fitted to both ends of the main body plate 1 in the longitudinal direction.

次に、フィンプレート積層体６は、図１および図２に示すごとく、多数の細長いフィンプレート５をその厚み方向に重ね合わせたものである。このフィンプレート５の高さは、一対の本体プレート１の内部に形成された流路２の高さｈに等しい。各フィンプレート５は、その両面に多数の凸部７が突設されている。この凸部７は、プレス機械による抜き孔加工を半分行なった半抜きにより形成されたものからなり、その凸部７の裏面側には凹部９が形成されている。凸部７の高さは、フィンプレート５の厚みの略半分である。   Next, as shown in FIGS. 1 and 2, the fin plate laminate 6 is obtained by superposing a large number of elongated fin plates 5 in the thickness direction. The height of the fin plate 5 is equal to the height h of the flow path 2 formed inside the pair of main body plates 1. Each fin plate 5 has a large number of protrusions 7 projecting from both sides thereof. This convex part 7 consists of what was formed by the half punching which performed the punching process by a press machine half, and the recessed part 9 is formed in the back surface side of the convex part 7. FIG. The height of the convex portion 7 is substantially half of the thickness of the fin plate 5.

各フィンプレート５は、それぞれの凸部７が互いに当接するように、図２のごとく重ね合わされる。すると、各フィンプレート５の間に凸部７の２つ分の隙間が形成され、それがそれぞれフィンプレート５の厚みに略等しい。なお、積層方向の両端には、端部フィンプレート5aが配置されている。この端部フィンプレート5aは、その一方の外面側にのみ凸部７が突設されている。そして、それが本体プレート１の皿状の立上がり面に接する。その端部フィンプレート5aの両面側の隙間はそれぞれ凸部７の突出量のみである。これは他のフィンプレート５間の隙間の半分である。端部には冷却水が他の位置より流通しやすいので、他の半分の隙間で十分である。
なお、各フィンプレート５および端部フィンプレート5aは、その表面にろう材が被覆されていないアルミニウム材又はその合金が使用される。或いは、その両面に犠牲陽極材を被覆したアルミ合金を使用することができる。 The fin plates 5 are overlapped as shown in FIG. 2 so that the convex portions 7 are in contact with each other. Then, a gap corresponding to two of the convex portions 7 is formed between each fin plate 5, which is substantially equal to the thickness of the fin plate 5. Note that end fin plates 5a are disposed at both ends in the stacking direction. The end fin plate 5a has a protruding portion 7 protruding only on one outer surface side thereof. And it contacts the dish-shaped rising surface of the main body plate 1. The gaps on both sides of the end fin plate 5a are only the protruding amounts of the convex portions 7, respectively. This is half of the gap between the other fin plates 5. The cooling water is more likely to flow through the end than the other positions, so the other half of the gap is sufficient.
The fin plate 5 and the end fin plate 5a are made of an aluminum material whose surface is not coated with a brazing material or an alloy thereof. Or the aluminum alloy which coat | covered the sacrificial anode material on the both surfaces can be used.

フィンプレート積層体６の幅は、本体プレート１の流路２の幅ｗに等しい。そして、図３に示すごとくフィンプレート積層体６を一対の本体プレート１の流路２内に嵌着するとともに、本体プレート１の両端部に一対の出入口パイプ11を配置し、上下一対の本体プレート１のフランジ部13どうしを接触させる。それとともに、本体プレート１の４隅に設けた孔にそれぞれ熱交換器取付用のボス12を配置する。このように組立てた状態で全体を高温の炉内に挿入し、一体にろう付け固定する。   The width of the fin plate laminate 6 is equal to the width w of the flow path 2 of the main body plate 1. Then, as shown in FIG. 3, the fin plate laminate 6 is fitted into the flow path 2 of the pair of main body plates 1, and the pair of inlet / outlet pipes 11 are disposed at both ends of the main body plate 1. 1 flange parts 13 are brought into contact with each other. At the same time, bosses 12 for mounting the heat exchanger are arranged in holes provided at the four corners of the main body plate 1. In the assembled state, the whole is inserted into a high-temperature furnace and brazed and fixed together.

図５は、そのろう付け前の状態を示し、一対の本体プレート１の内面のみにろう材1ａが被覆されている。ろう付け後には図６に示すごとく、一対の本体プレート１どうしがそのフランジ部13で接合されるとともに、各本体プレート１とフィンプレート５の高さ方向両端面との間がろう付けされ、そこにろうフィレット15が形成される。なお、積層方向の端部に存在する端部フィンプレート5aは唯一その凸部７と本体プレート１との間が接合される。そして、他のフィンプレート５どうしは全くろう付けされることがない。それによって、フィンプレート５間の隙間をろう材により閉塞されるおそれがない。   FIG. 5 shows a state before the brazing, in which only the inner surfaces of the pair of main body plates 1 are coated with the brazing material 1a. After the brazing, as shown in FIG. 6, a pair of main body plates 1 are joined to each other by their flange portions 13, and the height between both main body plates 1 and fin plates 5 is brazed. An enamel fillet 15 is formed. The end fin plate 5a existing at the end in the stacking direction is joined only between the convex portion 7 and the main body plate 1. The other fin plates 5 are not brazed at all. Accordingly, there is no possibility that the gap between the fin plates 5 is blocked by the brazing material.

図４は、本発明の高密度積層型熱交換器14の完成状態を示し、その高密度積層型熱交換器14は上下一対の本体プレート１によって熱交換器本体４を構成し、その熱交換器本体４の平坦面にパワートランジスタ等の発熱体16が接合される。そして、一方の出入口パイプ11から冷却液３が流入し、それがマニホールド８を介して流路２内に導かれる。そして、各フィンプレート５間を流通し、他方のマニホールド８および出入口パイプ11よりそれが外部に流出する。そして、発熱体16の熱が本体プレート１を介して各フィンプレート５に伝熱され、冷却液３との間に熱交換が行なわれる。
この高密度積層型熱交換器14は一例として車両に取付けられ、冷却液３としてエンジン冷却水が導入される。そして、発熱体16としては各種電子部品等がその表面に接合され、その放熱を良好に行い、それが所定温度以上、上昇することを防止し、その性能を維持する。 FIG. 4 shows a completed state of the high-density laminated heat exchanger 14 according to the present invention. The high-density laminated heat exchanger 14 comprises a heat exchanger body 4 composed of a pair of upper and lower body plates 1, and the heat exchange thereof. A heating element 16 such as a power transistor is joined to the flat surface of the main body 4. Then, the coolant 3 flows from one of the inlet / outlet pipes 11 and is guided into the flow path 2 through the manifold 8. And it distribute | circulates between each fin plate 5, and it flows out outside from the other manifold 8 and the inlet / outlet pipe 11. FIG. Then, the heat of the heating element 16 is transferred to each fin plate 5 through the main body plate 1, and heat exchange with the cooling liquid 3 is performed.
The high-density laminated heat exchanger 14 is attached to a vehicle as an example, and engine coolant is introduced as the coolant 3. And as the heat generating body 16, various electronic parts etc. are joined to the surface, the heat dissipation is performed well, it is prevented from rising above a predetermined temperature, and its performance is maintained.

次に、図７、図８は本発明の高密度積層型熱交換器の他の例の要部斜視略図および、
同熱交換器の要部断面図であって、ろう付け後の状態を示す。この例が、前記実施例の図１、図６の例と異なる点は、凸部７の形状およびプレス成形の仕方である。この例は、凸部７がプレス機械により、切り起こし形成されたものである。その凸部７の高さは、フィンプレート５の厚みと同一である。なお、端部フィンプレート5aでは、その外側の凸部が板厚の半分の厚さであり、内側のそれは端部フィンプレート5aの厚みと同一である。 Next, FIG. 7 and FIG. 8 are schematic perspective views of main parts of another example of the high-density laminated heat exchanger of the present invention,
It is principal part sectional drawing of the same heat exchanger, Comprising: The state after brazing is shown. This example is different from the example of FIGS. 1 and 6 of the above embodiment in the shape of the convex portion 7 and the method of press molding. In this example, the convex portion 7 is cut and raised by a press machine. The height of the convex portion 7 is the same as the thickness of the fin plate 5. Note that in the end fin plate 5a, the outer convex portion is half the thickness of the plate, and the inner one is the same as the thickness of the end fin plate 5a.

１ 本体プレート
1a ろう材
２ 流路
３ 冷却液
４ 熱交換器本体
５ フィンプレート
5a 端部フィンプレート 1 Body plate
1a Brazing material 2 Flow path 3 Coolant 4 Heat exchanger body 5 Fin plate
5a End fin plate

６ フィンプレート積層体
７ 凸部
８ マニホールド
９ 凹部
10 半筒部
11 出入口パイプ 6 Fin Plate Laminate 7 Convex 8 Manifold 9 Concave
10 Half tube
11 Entrance pipe

12 ボス
13 フランジ部
14 高密度積層型熱交換器
15 ろうフィレット
16 発熱体 12 Boss
13 Flange
14 High-density laminated heat exchanger
15 wax fillet
16 Heating element

Claims (3)

少なくとも一方が溝状に形成された一対の細長い本体プレート(1)を有し、その一対の本体プレート(1)の幅方向の縁部どうしが互いに接合されて内部に、その幅ｗがその高さｈに比して著しく広い偏平な流路(2)を形成し、その内部に冷却液(3)がその長手方向に流通し、偏平な外面に被冷却用の発熱体(16)が接続される熱交換器本体(4)と、
その熱交換器本体(4)の前記偏平な流路に挿入され、多数の細長いフィンプレート(5)がその厚み方向へ高密度に積層されるフィンプレート積層体(6)と、
を具備する高密度積層型熱交換器において、
それぞれの前記フィンプレート(5)は、前記偏平な流路(2)の前記高さｈに整合する高さを有する平坦な細長い金属板からなり、その金属板にプレス成形によりその厚み方向に、凸部(7)が複数互いに離間して突設され、
隣接するフィンプレート(5)の凸部(7)どうしまたは、その凸部(7)とフィンプレート(5)とが互いに接触して、全体が前記溝状の幅ｗに整合する前記フィンプレート積層体(6)を構成し、
前記本体プレート(1)と、各フィンプレート(5)の高さ方向の両端面とのみがろう付けされ、各フィンプレート(5)どうしは、ろう付けされないように構成した高密度積層型熱交換器。 It has a pair of elongated body plates (1) at least one of which is formed in a groove shape, the edges in the width direction of the pair of body plates (1) are joined together, and the width w is the height A flat flow channel (2) that is significantly wider than the length h is formed, the coolant (3) flows in the longitudinal direction inside, and the heating element (16) to be cooled is connected to the flat outer surface. A heat exchanger body (4) to be
A fin plate laminate (6) that is inserted into the flat flow path of the heat exchanger body (4), and a large number of elongated fin plates (5) are laminated at a high density in the thickness direction;
In a high-density laminated heat exchanger comprising:
Each of the fin plates (5) is composed of a flat and elongated metal plate having a height matching the height h of the flat channel (2), and the metal plate is press-formed in the thickness direction thereof. A plurality of convex portions (7) are provided apart from each other,
Adjacent fin plate (5) protrusions (7), or the protrusions (7) and fin plate (5) are in contact with each other, and the fin plate stack is aligned with the groove width w. Compose the body (6),
Only the main body plate (1) and both end faces in the height direction of each fin plate (5) are brazed, and the fin plates (5) are configured so as not to be brazed. vessel. 請求項１に記載の高密度積層型熱交換器において、
前記本体プレート(1)の内面には、ろう材(1a)が被覆された金属板が用いられ、各フィンプレート(5)の表面にはろう材が存在しない金属板が用いられ、それらの組立て体が炉内で一体にろう付け固定されてなる高密度積層型熱交換器。 The high-density laminated heat exchanger according to claim 1,
A metal plate coated with a brazing material (1a) is used for the inner surface of the main body plate (1), and a metal plate with no brazing material is used for the surface of each fin plate (5). A high-density stacked heat exchanger in which the body is brazed and fixed together in a furnace. 請求項１または請求項２に記載の高密度積層型熱交換器において、
前記フィンプレート(5)の前記各凸部(7)は、プレス機械により、抜き孔加工を半分行った半抜きにより形成されまたは、厚み方向に切り起こし形成されたものからなり、隣接するフィンプレート(5)間の隙間とそのフィンプレート(5)の板厚とが略同一となる高密度積層型熱交換器。 The high-density laminated heat exchanger according to claim 1 or 2,
Each of the convex portions (7) of the fin plate (5) is formed by half punching by punching a hole by a press machine, or formed by cutting and raising in the thickness direction, and adjacent fin plates (5) A high-density stacked heat exchanger in which the gap between the fin plate (5) and the fin plate (5) have substantially the same thickness.
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