JP5999969B2

JP5999969B2 - Laminate heat exchanger

Info

Publication number: JP5999969B2
Application number: JP2012107485A
Authority: JP
Inventors: 満柳澤; 隼人京増; 山崎　丈嗣; 丈嗣山崎
Original assignee: T Rad Co Ltd
Current assignee: T Rad Co Ltd
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2016-09-28
Anticipated expiration: 2032-05-09
Also published as: JP2013235967A

Description

本発明は、パワートランジスタや集積回路パッケージ等の発熱体を冷却する積層型熱交換器に関する。 The present invention relates to a stacked heat exchanger for cooling a heating element such as a power transistor or an integrated circuit package.

半導体素子等の発熱体を冷却する冷却装置の一例として、小孔を多数穿設したパンチングプレートを積層すると共に、その外周をケーシングで被嵌するものが提案されている。そして発熱体をそのケーシングの外面にビス等により固定し、内部に冷媒を流通させるものである。その発熱体をケーシング及びパンチングプレートにビス止めするため、それらに雌ネジ孔が形成されている。そしてそのネジ孔の外周は島状に形成され、そこには小孔がパンチングされない。その理由は、ネジ孔の周縁を液密に保つ必要があるからである。
その場合、ネジ孔周縁の流路が分断され、熱交換性能が低下するおそれがある。そこで下記特許文献１には、ネジ孔周縁部にバイパス流路を設けた提案がなされている。 As an example of a cooling device that cools a heating element such as a semiconductor element, a punching plate having a large number of small holes is stacked and the outer periphery thereof is fitted with a casing. And a heat generating body is fixed to the outer surface of the casing with a screw etc., and a refrigerant is circulated inside. In order to screw the heating element to the casing and the punching plate, female screw holes are formed in them. And the outer periphery of the screw hole is formed in an island shape, and a small hole is not punched there. The reason is that it is necessary to keep the periphery of the screw hole liquid-tight.
In that case, the flow path at the periphery of the screw hole is divided, and the heat exchange performance may be reduced. Therefore, in Patent Document 1 below, a proposal is made in which a bypass channel is provided at the periphery of the screw hole.

特開２００５−１６６７３７号公報JP 2005-166737 A 特開２００２−１６４４８９号公報JP 2002-164489 A

特許文献１には、ネジ孔の周縁の島部によって遮断される流体を迂回させるため、バイパス路を設けている。しかしその場合には、そのバイパス路において流体抵抗が増加し、結果としてネジ孔周縁部の冷媒の流れが円滑に行われないおそれがある。
そこで、本発明は係る欠点を取り除き、ネジ孔またはボルト孔周縁部においても冷媒を円滑に流通させ、熱交換器の各部の放熱性を可能な限り均一に維持することを課題とする。 In Patent Document 1, a bypass path is provided in order to bypass the fluid blocked by the island part at the periphery of the screw hole. However, in that case, fluid resistance increases in the bypass passage, and as a result, there is a possibility that the refrigerant flow around the peripheral portion of the screw hole is not smoothly performed.
Therefore, the present invention aims to eliminate such drawbacks and to allow the refrigerant to flow smoothly even in the peripheral part of the screw hole or the bolt hole, and to maintain the heat radiation property of each part of the heat exchanger as uniformly as possible.

請求項１に記載の本発明は、それぞれ多数の開口部（１）と非開口部（１０）とが交互に二次元に並列して穿設された平坦な複数の金属製のパンチングプレート（２）（３）を有し、各パンチングプレート（２）（３）が互いに接触して積層されると共に、隣接する各パンチングプレート（２）（３）の各開口部（１）は互いに平面方向に位置ずれされたコア（４）と、
そのコア（４）の外周を被嵌し、端部に冷媒のマニホールド部（５）を有するケーシング（６）と、
その積層方向のケーシング（６）の外面およびそれに隣接するパンチングプレート（２）（３）に穿設された取付孔（７）と、を具備し、
それら各部品間が一体にろう付け固定されて、ケーシング（６）の外面に発熱体が取付られると共に、冷媒（８）が各パンチングプレート（２）（３）の各開口部（１）内を前記平面方向に流通する積層型熱交換器において、
前記ケーシング（６）に隣接するパンチングプレート（２）（３）の前記取付孔（７）の周縁には前記開口部（１）が存在しない島部（９）を有し、
前記冷媒（８）の流通方向で、島部（９）が遮る位置にある第１開口部（１ａ）と、その流通方向に交差する方向で、その島部（９）が遮らない位置にある島部周縁の第２開口部（１ｂ）との間の非開口部（１０）が取り除かれて、そこに各開口部より大きな大径口部（１１）が形成され、
各パンチングプレート（２）（３）の取付孔（７）の中心に対して対角位置に、一対の前記大径口部（１１）が互いに逆向きに形成され、
積層された一方のパンチングプレート（２）と、それに隣接する他方のパンチングプレート（３）では、取付孔（７）の中心に対して逆の対角位置に前記大径口部（１１）が形成され、
一方のパンチングプレート（２）の前記取付孔（７）の上流側に位置する大径口部（１１）の幅方向の中央位置には、前記第１開口部（１ａ）が連通し、
その第１開口部（１ａ）から大径口部（１１）に流入する冷媒は、大径口部（１１）内を前記取付孔（７）の周縁方向に沿って回り込むようにしてその下流端側に収束され、
次いで、それに隣接する他方のパンチングプレート（３）の大径口部（１１）内ではその冷媒がその大径口部（１１）内を拡散して、そこから下流側の各開口部（１）に供給されることを特徴とする積層型熱交換器である。 The present invention according to claim 1 is a flat metal punching plate (2) in which a large number of openings (1) and non-openings (10) are alternately drilled in two dimensions in parallel. ) (3), and the punching plates (2) and (3) are stacked in contact with each other, and the openings (1) of the adjacent punching plates (2) and (3) A misaligned core (4);
A casing (6) fitted around the outer periphery of the core (4) and having a refrigerant manifold (5) at its end;
A mounting hole (7) drilled in the outer surface of the casing (6) in the stacking direction and the punching plates (2) and (3) adjacent thereto,
These parts are integrally brazed and fixed, and a heating element is attached to the outer surface of the casing (6), and the refrigerant (8) passes through the openings (1) of the punching plates (2) and (3). In the stacked heat exchanger that circulates in the planar direction,
On the periphery of the mounting hole (7) of the punching plate (2) (3) adjacent to the casing (6), there is an island (9) where the opening (1) does not exist,
In the flow direction of the refrigerant (8) , the island (9) is in a position where the island (9) is blocked, and the island (9) is in a position where the island (9) is not blocked in the direction intersecting the flow direction. The non-opening part (10) between the second opening part (1b) on the periphery of the island part is removed, and a large-diameter mouth part (11) larger than each opening part is formed there,
A pair of large-diameter mouth portions (11) are formed in opposite directions with respect to the center of the mounting hole (7) of each punching plate (2) (3),
In one of the stacked punching plates (2) and the other adjacent punching plate (3), the large-diameter opening (11) is formed at a diagonal position opposite to the center of the mounting hole (7). And
The first opening (1a) communicates with the center position in the width direction of the large-diameter opening (11) located on the upstream side of the mounting hole (7) of one punching plate (2),
The refrigerant flowing from the first opening (1a) into the large-diameter opening (11) wraps around in the large-diameter opening (11) along the peripheral direction of the mounting hole (7), and the downstream end thereof. Converged to the side
Next, in the large-diameter opening (11) of the other punching plate (3) adjacent thereto, the refrigerant diffuses in the large-diameter opening (11), and each downstream opening (1) from there. It is a laminated heat exchanger characterized by being supplied to .

請求項２に記載の本発明は、請求項１に記載の積層型熱交換器において、
前記大径口部(11)の島部(9)側の孔縁(11a) は、前記取付孔(7)から略等距離になるように、その取付孔(7)の回りに傾斜または湾曲形成された積層型熱交換器である。 According to a second aspect of the present invention, in the stacked heat exchanger according to the first aspect,
The hole edge (11a) on the island part (9) side of the large diameter mouth part (11) is inclined or curved around the mounting hole (7) so as to be substantially equidistant from the mounting hole (7). It is the formed laminated heat exchanger.

請求項３に記載の本発明は、それぞれ多数の開口部（１）と非開口部（１０）とが交互に二次元に並列されて穿設されたフィン部（１６）および、その外周の端部に一体に枠部（１７ａ）が突設されて、その枠部（１７ａ）の内側にマニホールド部（１７）が形成された平坦な複数の金属製のパンチングプレート（１８）（１９）を有し、各パンチングプレート（１８）（１９）が互いに接触して積層されると共に、隣接する各パンチングプレート（１８）（１９）の各開口部（１）は互いに平面方向に位置ずれされたコア（２０）と、
各パンチングプレート（１８）（１９）の積層方向の両端に配置された一対の閉塞板（２１）と、
その閉塞板（２１）の外面およびそれに隣接するパンチングプレート（１８）（１９）に穿設された取付孔（７）と、を具備し、
それら各部品間が一体にろう付け固定されて、閉塞板（２１）の外面に発熱体が取付られると共に、冷媒（８）が各パンチングプレート（１８）（１９）の各開口部（１）内を前記平面方向に流通する積層型熱交換器において、
前記閉塞板（２１）に隣接するパンチングプレート（１８）（１９）の前記取付孔（７）の周縁には前記開口部（１）が存在しない島部（９）を有し、
前記冷媒（８）の流通方向で、島部（９）が遮る位置にある第１開口部（１ａ）と、その流通方向に交差する方向で、その島部（９）が遮らない位置にある島部周縁の第２開口部（１ｂ）との間の非開口部（１０）が取り除かれて、そこに各開口部より大きな大径口部（１１）が形成され、
各パンチングプレート（１８）（１９）の取付孔（７）の中心に対して対角位置に、一対の前記大径口部（１１）が互いに逆向きに形成され、
積層された一方のパンチングプレート（１８）と、それに隣接する他方のパンチングプレート（１９）では、取付孔（７）の中心に対して逆の対角位置に前記大径口部（１１）が形成され、
一方のパンチングプレート（１８）の前記取付孔（７）の上流側に位置する大径口部（１１）の幅方向の中央位置には、前記第１開口部（１ａ）が連通し、
その第１開口部（１ａ）から大径口部（１１）に流入する冷媒は、大径口部（１１）内を前記取付孔（７）の周縁方向に沿って回り込むようにしてその下流端側に収束され、
次いで、それに隣接する他方のパンチングプレート（１９）の大径口部（１１）内ではその冷媒がその大径口部（１１）内を拡散して、そこから下流側の各開口部（１）に供給されることを特徴とする積層型熱交換器である。 The present invention according to claim 3 includes a fin portion (16) in which a large number of openings (1) and non-openings (10) are alternately arranged in two dimensions, and an outer peripheral end thereof. A plurality of flat metal punching plates (18) and (19) each having a frame portion (17a) projecting integrally therewith and having a manifold portion (17) formed inside the frame portion (17a). The punching plates (18) and (19) are stacked in contact with each other, and the openings (1) of the adjacent punching plates (18) and (19) are mutually displaced in the plane direction. 20)
A pair of blocking plates (21) disposed at both ends in the stacking direction of each punching plate (18) (19);
A mounting hole (7) drilled in the outer surface of the closing plate (21) and the punching plates (18) (19) adjacent to the outer surface,
These parts are integrally brazed and fixed, and a heating element is attached to the outer surface of the closing plate (21), and the refrigerant (8) is placed in each opening (1) of each punching plate (18) (19). In the laminated heat exchanger that circulates in the planar direction,
On the periphery of the mounting hole (7) of the punching plate (18) (19) adjacent to the closing plate (21), there is an island (9) where the opening (1) does not exist,
In the flow direction of the refrigerant (8), the island (9) is in a position where the island (9) is blocked, and the island (9) is in a position where the island (9) is not blocked in the direction intersecting the flow direction. The non-opening part (10) between the second opening part (1b) on the periphery of the island part is removed, and a large-diameter mouth part (11) larger than each opening part is formed there,
A pair of large-diameter mouth portions (11) are formed in opposite directions with respect to the center of the mounting hole (7) of each punching plate (18) (19),
In one of the stacked punching plates (18) and the other adjacent punching plate (19), the large-diameter opening (11) is formed at a diagonal position opposite to the center of the mounting hole (7). And
The first opening (1a) communicates with the center position in the width direction of the large-diameter opening (11) located on the upstream side of the mounting hole (7) of one punching plate (18),
The refrigerant flowing from the first opening (1a) into the large-diameter opening (11) wraps around in the large-diameter opening (11) along the peripheral direction of the mounting hole (7), and the downstream end thereof. Converged to the side
Next, in the large-diameter opening (11) of the other punching plate (19) adjacent thereto, the refrigerant diffuses in the large-diameter opening (11), and each downstream opening (1) from there. It is a laminated heat exchanger characterized by being supplied to .

請求項１および請求項３に記載の本発明の積層型熱交換器は、そのパンチングプレート２、３および、パンチングプレート１８，１９と、それの島部９の回りの第１開口部１ａと大径口部１１とが連通され、そこに各開口部より大きな大径口部１１を一体に形成したものである。
そのため、島部９で遮断されるべき第１開口部１ａの流体を、大径口部１１を介して下流側へ流通させることができる。しかも、その大径口部１１が各開口より大きく形成されているため、各第１開口部１ａおよびその近傍の流体の流通を円滑に行い、その流通に伴う圧損を低下して、熱交換を促進できる。
さらに、取付孔７の中心に対して対角位置に、一対の前記大径口部１１が互いに逆向きに形成され、
積層された一方のパンチングプレート２と、それに隣接する他方のパンチングプレート３及び、一方のパンチングプレート１８と、それに隣接する他方のパンチングプレート１９では、取付孔７の中心に対して逆の対角位置に前記大径口部１１が形成され、
一方のパンチングプレート２及び、一方のパンチングプレート１８の前記取付孔７の上流側に位置する大径口部１１の幅方向の中央位置には、前記第１開口部１ａが連通し、
その第１開口１ａから大径口部１１に流入する冷媒は、大径口部１１内を前記取付孔７の周縁方向に沿って回り込むようにしてその下流端側に収束され、
次いで、それに隣接する他方のパンチングプレート３及び、他方のパンチングプレート１９の大径口部１１内ではその冷媒がその大径口部１１内を拡散して、そこから下流側の各開口部１に供給されるから、島部９の回りに沿って円滑に導かれ、冷媒の流通抵抗を可及的に低く抑えることができる。 The laminated heat exchanger according to the first and third aspects of the present invention includes a punching plate 2, 3, punching plates 18, 19, a first opening 1 a around the island portion 9, and a large size. The diameter port part 11 is connected, and the large diameter port part 11 larger than each opening part is integrally formed there.
Therefore, the fluid of the 1st opening part 1a which should be interrupted | blocked by the island part 9 can be distribute | circulated downstream via the large diameter opening part 11. FIG. In addition, since the large-diameter opening portion 11 is formed larger than each opening, each of the first openings 1a and the fluid in the vicinity thereof can be smoothly circulated, pressure loss associated with the circulation is reduced, and heat exchange is performed. Can promote.
Furthermore, a pair of the large-diameter mouth portions 11 are formed in opposite directions with respect to the center of the mounting hole 7,
In the stacked one punching plate 2, the other punching plate 3 adjacent thereto, the one punching plate 18, and the other punching plate 19 adjacent thereto, opposite diagonal positions with respect to the center of the mounting hole 7 The large-diameter opening 11 is formed in
The first opening 1a communicates with the central position in the width direction of the large diameter opening 11 located on the upstream side of the mounting hole 7 of the one punching plate 2 and the one punching plate 18,
The refrigerant flowing into the large-diameter mouth portion 11 from the first opening 1a is converged on the downstream end side so as to circulate in the large-diameter mouth portion 11 along the peripheral direction of the mounting hole 7,
Next, the refrigerant diffuses in the large-diameter opening 11 in the other punching plate 3 adjacent thereto and the large-diameter opening 11 of the other punching plate 19, and from there to each opening 1 on the downstream side. Since it is supplied, it is smoothly guided along the island portion 9 and the flow resistance of the refrigerant can be suppressed as low as possible.

請求項２に記載の本発明のように大径口部１１の島部９側の孔縁１１ａを、取付孔７から略等距離になるように、その取付孔７の回りに傾斜または湾曲形成した場合には、島部９を取付孔７の回りに略円形に近く形成して、島部９の面積を必要最小限とし、熱交換を促進できる。 The hole edge 11a on the island 9 side of the large-diameter mouth portion 11 is inclined or curved around the mounting hole 7 so as to be substantially equidistant from the mounting hole 7 as in the present invention described in claim 2. In this case, the island portion 9 is formed in a substantially circular shape around the mounting hole 7 to minimize the area of the island portion 9 and promote heat exchange.

本発明の第１実施例の積層型熱交換器の分解斜視図。The exploded perspective view of the lamination type heat exchanger of the 1st example of the present invention. 同熱交換器の冷媒８の流れを示す説明図。Explanatory drawing which shows the flow of the refrigerant | coolant 8 of the same heat exchanger. 同熱交換器に用いられるパンチングプレート２，３の要部を示す平面図であって、（Ａ）はパンチングプレート２，３を積層した状態であり、（Ｂ）はパンチングプレート２の平面図、（Ｃ）はパンチングプレート３の平面図。It is a top view which shows the principal part of the punching plates 2 and 3 used for the same heat exchanger, (A) is the state which laminated | stacked the punching plates 2 and 3, (B) is a top view of the punching plate 2, (C) is a plan view of the punching plate 3. 図３におけるＩＶ−ＩＶ矢視断面略図。FIG. 4 is a schematic cross-sectional view taken along IV-IV in FIG. 3. 図３のＶ−Ｖ矢視断面略図。FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 3. 他の積層型熱交換器に用いられるパンチングプレート２の大径口部11の説明図。Explanatory drawing of the large diameter opening | mouth part 11 of the punching plate 2 used for another laminated heat exchanger. 図６に比較した第１実施例のパンチングプレート２の大径口部11の説明図。Explanatory drawing of the large diameter opening part 11 of the punching plate 2 of 1st Example compared with FIG. 本発明の他の実施例の積層型熱交換器の分解斜視図。The disassembled perspective view of the laminated heat exchanger of the other Example of this invention. 同熱交換器に用いられるパンチングプレート18，19の平面図。The top view of punching plates 18 and 19 used for the heat exchanger. 同パンチングプレート18及びパンチングプレート19を重ね合わせた状態の平面図。The top view of the state which piled up the punching plate 18 and the punching plate 19. FIG. 同熱交換器の図１０におけるＸＩ−ＸＩ矢視断面略図であって、冷媒８の流れを示す説明図。FIG. 11 is a schematic cross-sectional view taken along the line XI-XI in FIG. 10 of the heat exchanger, illustrating the flow of the refrigerant 8.

次に、図面に基づいて本発明の各実施の形態につき説明する。
図１〜図５は、本発明の第１の実施の形態を示す積層型熱交換器である。
この熱交換器は、第１のパンチングプレート２と第２のパンチングプレート３とが交互に積層されてコア４を構成し、そのコア４の外周を一対のプレートからなるケーシング６によって被嵌したものである。
第１のパンチングプレート２と第２のパンチングプレート３は、図３（Ｂ）及び（Ｃ）にその要部を示す如く、夫々多数の同一形状の長方形の小孔からなる開口部１を非開口部10を介して二次元に並列する。その第１のパンチングプレート２の開口部１と、第２のパンチングプレート３の開口部１とは、図３に示す如く、半ピッチ冷媒８の流通方向に位置ずれする。そして両パンチングプレート２，３を交互に積層したとき、図３（Ａ）に示す如く、一方のパンチングプレート２の開口部１内に、他方のパンチングプレート３の非開口部10が位置する。 Next, each embodiment of the present invention will be described with reference to the drawings.
1 to 5 show a stacked heat exchanger according to a first embodiment of the present invention.
In this heat exchanger, a first punching plate 2 and a second punching plate 3 are alternately stacked to constitute a core 4, and the outer periphery of the core 4 is fitted with a casing 6 made of a pair of plates. It is.
As shown in FIGS. 3B and 3C, the first punching plate 2 and the second punching plate 3 each have a non-opening made of a plurality of rectangular small holes having the same shape. Parallel in two dimensions via part 10. The opening 1 of the first punching plate 2 and the opening 1 of the second punching plate 3 are displaced in the flow direction of the half-pitch refrigerant 8 as shown in FIG. When the punching plates 2 and 3 are alternately laminated, the non-opening portion 10 of the other punching plate 3 is positioned in the opening portion 1 of the one punching plate 2 as shown in FIG.

両パンチングプレート２，３には、互いに整合する位置に開口部１の存在しない島部９が設けられ、その島部９の中心に取付孔７が穿設されている。そして各プレート２，３の取付孔７は整合すると共に、ケーシング６に設けられた取付孔７もパンチングプレート２，３の取付孔７と整合する。
これら各部品は、互いに圧接した積層状態で、一体的にろう付け固定され、その後に各取付孔７に雌ネジが螺刻される。なお、その取付孔７は、ろう付け後にそれをケーシング６の外面側から穿設してもよい。この取付孔７は、図示しない半導体等をケーシング６の外面に取り付けるためのビス孔である。この取付孔７の周りには開口部１を設けず、島部９とする。理由は、積層方向に液密性を保持するためである。 Both punching plates 2 and 3 are provided with an island portion 9 where the opening 1 does not exist at a position where they are aligned with each other, and an attachment hole 7 is formed at the center of the island portion 9. The mounting holes 7 of the plates 2 and 3 are aligned, and the mounting holes 7 provided in the casing 6 are also aligned with the mounting holes 7 of the punching plates 2 and 3.
These components are integrally brazed and fixed in a stacked state in pressure contact with each other, and then female screws are screwed into the mounting holes 7. The mounting hole 7 may be drilled from the outer surface side of the casing 6 after brazing. The attachment hole 7 is a screw hole for attaching a semiconductor or the like (not shown) to the outer surface of the casing 6. The opening 1 is not provided around the mounting hole 7, and the island 9 is used. The reason is to maintain liquid tightness in the stacking direction.

ところが、その島部９は冷媒８の流れを遮断してしまう。
そこで本発明では、島部９の周りで、その島部９が冷媒８を遮断する位置にある第１開口部1aと、遮断する位置にはない第２開口部1bとを大径口部11で連結する。この大径口部11は、第１開口部1a及び第２開口部1bの何れよりも大きな開口である。この例の大径口部11は、その各部が図７に示す如く、異形の台形または略三角形に形成され、その斜辺が取付孔７の孔縁11aから略等距離にある。そして取付孔７の周りの島部９の外周を略円形に保持して、その液密性を高めている。なお、第１のパンチングプレート２の大径口部11は、取付孔７の回りで、それに対して対角位置に一対、配置されている。 However, the island portion 9 blocks the flow of the refrigerant 8.
Therefore, in the present invention, the large-diameter mouth portion 11 includes the first opening portion 1a at the position where the island portion 9 blocks the refrigerant 8 and the second opening portion 1b which is not at the blocking position. Connect with The large-diameter opening 11 is an opening larger than both the first opening 1a and the second opening 1b. As shown in FIG. 7, each of the large-diameter mouth portions 11 in this example is formed in a deformed trapezoidal shape or a substantially triangular shape, and its hypotenuse is substantially equidistant from the hole edge 11 a of the mounting hole 7. And the outer periphery of the island part 9 around the attachment hole 7 is hold | maintained in substantially circular shape, and the liquid-tightness is improved. A pair of large-diameter mouth portions 11 of the first punching plate 2 are disposed around the mounting hole 7 and diagonally with respect to the mounting hole 7.

次に、第２のパンチングプレート３には、第１のパンチングプレート２とは線対称位置に大径口部11が形成されている。そして、両パンチングプレート２、３が交互に積層されることにより、図３（Ａ）の如く、上側のパンチングプレート２の第１開口部1a及びその近傍に流通する冷媒８を上側プレートの大径口部11を介して第２開口部1bに合流させ、次いでそれが下側パンチングプレート３の大径口部11に流通し、そこで各開口部１に冷媒８を分流させ、各部に分配する。
なお、冷媒８は図４及び図５に示す如く、第１のパンチングプレート２と第２のパンチングプレート３の各開口部１を蛇行状に流通する。 Next, the second punching plate 3 is formed with a large-diameter mouth portion 11 at a line symmetrical position with respect to the first punching plate 2. Then, by alternately laminating the punching plates 2 and 3, as shown in FIG. 3A, the first opening 1a of the upper punching plate 2 and the refrigerant 8 flowing in the vicinity thereof are passed through the large diameter of the upper plate. It merges with the second opening 1b through the mouth 11, and then flows into the large-diameter mouth 11 of the lower punching plate 3, where the refrigerant 8 is diverted to each opening 1 and distributed to each part.
As shown in FIGS. 4 and 5, the refrigerant 8 circulates in a meandering manner through the openings 1 of the first punching plate 2 and the second punching plate 3.

そして大径口部11を通過するときは、それが開口部１より大きくなっているため、各部の冷媒８を円滑に集め、下流側に流通させることができる。そのとき、冷媒の流通抵抗を可及的に低く抑えることができる。
なお、本発明の大径口部11の形状は上記実施例に限定されるものでは勿論無く、図６の如く、略方形に形成しても良い。 And when passing through the large-diameter opening 11, since it is larger than the opening 1, the refrigerant 8 of each part can be smoothly collected and circulated downstream. At that time, the flow resistance of the refrigerant can be suppressed as low as possible.
Note that the shape of the large-diameter opening 11 of the present invention is not limited to the above embodiment, and may be formed in a substantially square shape as shown in FIG.

次に、図８〜図１１は本発明の積層型熱交換器の他の実施例であり、この例では、第１のパンチングプレート18と第２のパンチングプレート19とが、夫々フィン部16と一対の枠部17aとを有する。そして、枠部17aの内側に一対のマニホールド部17を形成したものである。他の構造は前記実施例と同一であるので、記載を省略する。
このような第１のパンチングプレート18と第２のパンチングプレート19とを、前記実施例と同様にして、交互に積層し、その積層方向の両端に一対の閉塞板21を配置したものである。この例では、上側の閉塞板21の端部に設けた一対の孔24に入口パイプ14及び出口パイプ15が接続される。そして冷媒８が図１０及び図１１の如く、一方の孔24からマニホールド部17を介し各フィン部16を流通して、他方のマニホールド部17より孔24に流出する。そして閉塞板21の取付孔７には、図示しない放熱体がビス等を介し、取付けられる。
なお、この例でも冷媒８の大径口部11における流れは、第１実施例と同一である。 Next, FIGS. 8 to 11 show another embodiment of the laminated heat exchanger according to the present invention. In this example, the first punching plate 18 and the second punching plate 19 are respectively connected to the fin portions 16. And a pair of frame portions 17a. A pair of manifold portions 17 is formed inside the frame portion 17a. Since the other structure is the same as that of the above embodiment, the description is omitted.
Such first punching plate 18 and second punching plate 19 are alternately stacked in the same manner as in the above embodiment, and a pair of closing plates 21 are arranged at both ends in the stacking direction. In this example, the inlet pipe 14 and the outlet pipe 15 are connected to a pair of holes 24 provided at the ends of the upper closing plate 21. Then, as shown in FIGS. 10 and 11, the refrigerant 8 flows through the fin portions 16 from the one hole 24 through the manifold portion 17 and flows out from the other manifold portion 17 to the hole 24. A radiator (not shown) is attached to the attachment hole 7 of the closing plate 21 via a screw or the like.
In this example as well, the flow of the refrigerant 8 at the large-diameter opening 11 is the same as in the first embodiment.

１開口部
1a 第１開口部
1b 第２開口部
２パンチングプレート
３パンチングプレート
４コア
５マニホールド部
６ケーシング
７取付孔
８冷媒 1 opening
1a First opening
1b Second opening 2 Punching plate 3 Punching plate 4 Core 5 Manifold 6 Casing 7 Mounting hole 8 Refrigerant

９島部
10 非開口部
11 大径口部
11a 孔縁
12 フランジ部
13 偏平凹陥部
14 入口パイプ
15 出口パイプ
16 フィン部 9 island
10 Non-opening
11 Large diameter mouth
11a hole edge
12 Flange
13 Flat recess
14 Inlet pipe
15 Outlet pipe
16 Fin part

17 マニホールド部
17a 枠部
18 パンチングプレート
19 パンチングプレート
20 コア
21 閉塞板
24 孔 17 Manifold section
17a Frame
18 punching plate
19 Punching plate
20 cores
21 Blocking plate
24 holes

Claims

Each of the punching plates has a plurality of flat metal punching plates (2) and (3) in which a large number of openings (1) and non-openings (10) are alternately drilled in two dimensions in parallel. The plates (2) and (3) are stacked in contact with each other, and the openings (1) of the adjacent punching plates (2) and (3) have a core (4) displaced in the plane direction from each other;
A casing (6) fitted around the outer periphery of the core (4) and having a refrigerant manifold (5) at its end;
A mounting hole (7) formed in the outer surface of the casing (6) in the stacking direction and the punching plates (2) and (3) adjacent to the outer surface;
These parts are integrally brazed and fixed, and a heating element is attached to the outer surface of the casing (6), and the refrigerant (8) passes through the openings (1) of the punching plates (2) and (3). In the stacked heat exchanger that circulates in the planar direction,
On the periphery of the mounting hole (7) of the punching plate (2) (3) adjacent to the casing (6), there is an island (9) where the opening (1) does not exist,
In the flow direction of the refrigerant (8) , the island (9) is in a position where the island (9) is blocked, and the island (9) is in a position where the island (9) is not blocked in the direction intersecting the flow direction. The non-opening part (10) between the second opening part (1b) on the periphery of the island part is removed, and a large-diameter mouth part (11) larger than each opening part is formed there,
A pair of large-diameter mouth portions (11) are formed in opposite directions with respect to the center of the mounting hole (7) of each punching plate (2) (3),
In one of the stacked punching plates (2) and the other adjacent punching plate (3), the large-diameter opening (11) is formed at a diagonal position opposite to the center of the mounting hole (7). And
The first opening (1a) communicates with the center position in the width direction of the large-diameter opening (11) located on the upstream side of the mounting hole (7) of one punching plate (2),
The refrigerant flowing from the first opening (1a) into the large-diameter opening (11) wraps around in the large-diameter opening (11) along the peripheral direction of the mounting hole (7), and the downstream end thereof. Converged to the side
Next, in the large-diameter opening (11) of the other punching plate (3) adjacent thereto, the refrigerant diffuses in the large-diameter opening (11), and each downstream opening (1) from there. A laminated heat exchanger characterized by being supplied to

The stacked heat exchanger according to claim 1, wherein
The hole edge (11a) on the island (9) side of the large-diameter mouth portion (11) is inclined or curved around the mounting hole (7) so as to be substantially equidistant from the mounting hole (7). The formed laminated heat exchanger.

A fin portion (16) in which a large number of openings (1) and non-opening portions (10) are alternately arranged in two dimensions, and a frame portion (17a) are integrally formed at the outer periphery of the fin portion (16). It has a plurality of flat metal punching plates (18) and (19) which are projectingly provided and have a manifold portion (17) formed inside the frame portion (17a). Each punching plate (18) (19 ) Are stacked in contact with each other, and each opening (1) of each adjacent punching plate (18) (19) has a core (20) displaced in the plane direction from each other;
A pair of blocking plates (21) disposed at both ends in the stacking direction of each punching plate (18) (19);
A mounting hole (7) drilled in the outer surface of the closing plate (21) and the punching plates (18) (19) adjacent to the outer surface,
These parts are integrally brazed and fixed, and a heating element is attached to the outer surface of the closing plate (21), and the refrigerant (8) is placed in each opening (1) of each punching plate (18) (19). In the laminated heat exchanger that circulates in the planar direction,
On the periphery of the mounting hole (7) of the punching plate (18) (19) adjacent to the closing plate (21), there is an island (9) where the opening (1) does not exist,
In the flow direction of the refrigerant (8), the island (9) is in a position where the island (9) is blocked, and the island (9) is in a position where the island (9) is not blocked in the direction intersecting the flow direction. The non-opening part (10) between the second opening part (1b) on the periphery of the island part is removed, and a large-diameter mouth part (11) larger than each opening part is formed there,
A pair of large-diameter mouth portions (11) are formed in opposite directions with respect to the center of the mounting hole (7) of each punching plate (18) (19),
In one of the stacked punching plates (18) and the other adjacent punching plate (19), the large-diameter opening (11) is formed at a diagonal position opposite to the center of the mounting hole (7). And
The first opening (1a) communicates with the center position in the width direction of the large-diameter opening (11) located on the upstream side of the mounting hole (7) of one punching plate (18),
The refrigerant flowing from the first opening (1a) into the large-diameter opening (11) wraps around in the large-diameter opening (11) along the peripheral direction of the mounting hole (7), and the downstream end thereof. Converged to the side
Next, in the large-diameter opening (11) of the other punching plate (19) adjacent thereto, the refrigerant diffuses in the large-diameter opening (11), and each downstream opening (1) from there. A laminated heat exchanger characterized by being supplied to