JP2022024388A - Heat exchanger and its manufacturing method - Google Patents

Heat exchanger and its manufacturing method Download PDF

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JP2022024388A
JP2022024388A JP2020126941A JP2020126941A JP2022024388A JP 2022024388 A JP2022024388 A JP 2022024388A JP 2020126941 A JP2020126941 A JP 2020126941A JP 2020126941 A JP2020126941 A JP 2020126941A JP 2022024388 A JP2022024388 A JP 2022024388A
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heat transfer
intermediate connecting
side heat
connecting portion
heat exchanger
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JP7497640B2 (en
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俊輔 伊川
Shunsuke Ikawa
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Resonac Holdings Corp
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Showa Denko KK
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

To provide a heat exchanger capable of reducing the number of components and the number of assembling works.SOLUTION: A heat exchanger P1 includes an exterior body 2 having a skin part composed of a laminate material in which a resin layer is laminated on at least one surface of a metallic heat transfer layer. The exterior body 2 is divided into an intermediate connection portion 22, a one-side heat transfer portion 21 disposed at one side of the intermediate connection portion 22, and an other-side heat transfer portion 21 disposed at the other side, and is constituted so that the one-side heat transfer portion 21 and the other-side heat transfer portion 21 are arranged in parallel at an interval to each other through the intermediate connection portion 22 formed in a folded manner, and a heat exchange medium flowing from an inlet/outlet 25 of the one-side heat transfer portion 21, circulates in the one-side heat transfer portion 21, the intermediate connection portion 22 and the other-side heat transfer portion 21, and flows out from an inlet/outlet 25 of the other-side heat transfer portion 21.SELECTED DRAWING: Figure 1

Description

この発明は、金属製の伝熱層に樹脂層が積層されたラミネート材によって表皮部が形成された外装体を備えた熱交換器およびその製造方法に関する。 The present invention relates to a heat exchanger provided with an exterior body in which a skin portion is formed by a laminated material in which a resin layer is laminated on a metal heat transfer layer, and a method for manufacturing the same.

ハイブリッド自動車（ＨＥＶ）、電気自動車（ＥＶ）等においては、電動機を駆動するための電力を供給するバッテリー装置が搭載されている。このようなバッテリー装置としては、リチウム二次電池等の各種の二次電池からなる複数個の小型単電池が直列または並列に多数接続されて組電池の形態としたものが一般に用いられている。特に近年になって電気自動車の航続距離を延長させるために、複数の組電池が直列または並列に組み合わされて、バッテリー装置のさらなる大容量化が進められている。 Hybrid electric vehicles (HEVs), electric vehicles (EVs), and the like are equipped with a battery device that supplies electric power for driving an electric motor. As such a battery device, a battery device in which a large number of small cells made of various secondary batteries such as a lithium secondary battery are connected in series or in parallel to form an assembled battery is generally used. Particularly in recent years, in order to extend the cruising range of electric vehicles, a plurality of assembled batteries are combined in series or in parallel, and the capacity of the battery device is further increased.

一方、バッテリー装置として多く用いられるリチウム二次電池は、使用温度によって性能や寿命が大きく変化するため、長期間にわたって効率良く使用するには適正な温度に管理するのが好ましい。しかしながら、上記のような複数の組電池の形態で使用した場合、複数の組電池が密接して配置されているため、各組電池や各単電池から発生する熱を効果的に放出させることは困難であり、各組電池毎の温度が上昇してしまい、性能や寿命が低下してしまうおそれがある。 On the other hand, since the performance and life of a lithium secondary battery, which is often used as a battery device, changes greatly depending on the operating temperature, it is preferable to control the temperature to an appropriate temperature for efficient use over a long period of time. However, when used in the form of a plurality of assembled batteries as described above, since the plurality of assembled batteries are closely arranged, it is not possible to effectively release the heat generated from each assembled battery or each cell. It is difficult, and the temperature of each set of batteries may rise, resulting in a decrease in performance and life.

そこで下記特許文献１に示すような薄型の熱交換器を用いて、複数の組電池を冷却するようにした技術が開発されている。この熱交換器は、２枚の金属製皿状プレートを対向合致させて熱交換器（扁平チューブ）を形成し、複数の組電池の各間に扁平チューブがそれぞれ配置されることによって、組電池の各単電池から発せられる熱を、扁平チューブ内を流通する冷媒（冷却水）を介して外部に放出させるようにしている。 Therefore, a technique has been developed in which a plurality of assembled batteries are cooled by using a thin heat exchanger as shown in Patent Document 1 below. In this heat exchanger, two metal dish-shaped plates are opposed to each other to form a heat exchanger (flat tube), and a flat tube is arranged between each of a plurality of assembled batteries to form an assembled battery. The heat generated from each of the cells is discharged to the outside through the refrigerant (cooling water) flowing in the flat tube.

このような技術背景の下、自動車バッテリー装置としての複数の組電池を冷却するための熱交換器は、他の自動車部品と同様、薄型化、小型軽量化、低コスト化が可及的に求められ、その一環として、柔軟性の高いラミネート材を用いた熱交換器の採用が検討されている。 Against this background of technology, heat exchangers for cooling a plurality of assembled batteries as an automobile battery device are required to be thinner, smaller and lighter, and lower in cost as much as possible, like other automobile parts. As a part of this, the adoption of heat exchangers using highly flexible laminated materials is being considered.

ラミネート材を用いた熱交換器は、金属製の伝熱層の両面に樹脂製の被覆層が積層されたラミネート材によって構成された外装体を備えている。外装体には出入口が設けられており、この出入口を介して、外装体の内部に冷却液が循環できるように構成されている。そして、熱交換器を組電池に接触した状態に配置しておき、組電池の単電池から放出される熱と、外装体内を循環する冷却液との間で熱交換されることによって、組電池を冷却するようにしている。 A heat exchanger using a laminated material includes an exterior body made of a laminated material in which a resin coating layer is laminated on both sides of a metal heat transfer layer. The exterior body is provided with an entrance / exit, and the cooling liquid can be circulated inside the exterior body through the entrance / exit. Then, the heat exchanger is placed in contact with the assembled battery, and the heat exchanged between the heat released from the single battery of the assembled battery and the coolant circulating in the exterior body causes the assembled battery. I try to cool it.

特開２０１２－１９９１４９号公報Japanese Unexamined Patent Publication No. 2012-199149

ところで、上記組電池等の自動車用バッテリー装置を冷却する熱交換器、特に上記ラミネート材を用いた熱交換器において、一対の熱交換器によって、冷却対象部材を両側から挟み込んだ状態で使用するものがある。このような使用形態では、一方側の熱交換器から他方側の熱交換器に冷媒（冷却水）を流通させるために、両熱交換器間に冷媒Ｕターン用の中間ヘッダー部材等を別途取り付ける必要がある。従ってこの中間ヘッダー部材を取り付ける分、部品点数が増加して、構造の複雑化を来すという課題があった。さらに中間ヘッダー部材を組み付ける分、組付作業数も増加するため、生産効率の低下を来すという課題があった。 By the way, in a heat exchanger for cooling an automobile battery device such as the assembled battery, particularly a heat exchanger using the laminated material, the heat exchanger is used in a state where the member to be cooled is sandwiched from both sides by a pair of heat exchangers. There is. In such a usage pattern, in order to flow the refrigerant (cooling water) from the heat exchanger on one side to the heat exchanger on the other side, an intermediate header member or the like for a refrigerant U-turn is separately attached between the heat exchangers. There is a need. Therefore, there is a problem that the number of parts increases and the structure becomes complicated due to the attachment of this intermediate header member. Furthermore, since the number of assembly operations increases as the intermediate header member is assembled, there is a problem that the production efficiency is lowered.

この発明は、上記の課題に鑑みてなされたものであり、ラミネート材を用いた熱交換器において、部品点数および組付作業数を削減できて、構造の簡素化および生産効率の向上を図ることができる熱交換器を提供することを目的とする。 The present invention has been made in view of the above problems, and in a heat exchanger using a laminated material, the number of parts and the number of assembly operations can be reduced, the structure can be simplified, and the production efficiency can be improved. The purpose is to provide a heat exchanger that can be used.

上記課題を解決するため、本発明は、以下の手段を備えるものである。 In order to solve the above problems, the present invention comprises the following means.

［１］金属製の伝熱層の少なくとも片面に樹脂層が積層されたラミネート材によって表皮部が形成された外装体を備えた熱交換器であって、
前記外装体が、中間連結部と、その中間連結部の一方側に設けられた一方側伝熱部と、他方側に設けられた他方側伝熱部とに区分けされ、
折曲状に形成された前記中間連結部を介して、前記一方側伝熱部と前記他方側伝熱部とが互いに間隔をおいて並列に配置され、
前記一方側伝熱部の出入口から流入した熱交換媒体が、前記一方側伝熱部、前記中間連結部および前記他方側伝熱部を流通して前記他方側伝熱部の出入口から流出するように構成されたことを特徴とする熱交換器。 [1] A heat exchanger provided with an exterior body in which a skin portion is formed by a laminated material in which a resin layer is laminated on at least one surface of a metal heat transfer layer.
The exterior body is divided into an intermediate connecting portion, a one-sided heat transfer portion provided on one side of the intermediate connecting portion, and a other-side heat transfer portion provided on the other side.
The one-side heat transfer portion and the other-side heat transfer portion are arranged in parallel at intervals from each other via the intermediate connecting portion formed in a bent shape.
The heat exchange medium that has flowed in from the inlet / outlet of the one-side heat transfer portion flows through the one-side heat transfer portion, the intermediate connecting portion, and the other-side heat transfer portion, and flows out from the inlet / outlet of the other-side heat transfer portion. A heat transfer device characterized by being configured in.

［２］前記中間連結部の内部に、その内部の流路断面積を確保するためのスペーサが設けられている前項１に記載の熱交換器。 [2] The heat exchanger according to item 1 above, wherein a spacer is provided inside the intermediate connecting portion to secure the cross-sectional area of the flow path inside the intermediate connecting portion.

［３］前記中間連結部の前記外装体において対向し合う一対の表皮部のうち、少なくとも外側の表皮部に前記スペーサが接合されている前項２に記載の熱交換器。 [3] The heat exchanger according to item 2 above, wherein the spacer is joined to at least the outer skin portion of the pair of skin portions facing each other in the exterior body of the intermediate connecting portion.

［４］前記一対の表皮部のうち、内側の表皮部に前記スペーサが接合されていない前項３に記載の熱交換器。 [4] The heat exchanger according to item 3 above, wherein the spacer is not joined to the inner skin portion of the pair of skin portions.

［５］前記スペーサは、前記中間連結部における熱交換媒体流通方向の全域にわたって配置されている前項２～４のいずれか１項に記載の熱交換器。 [5] The heat exchanger according to any one of items 2 to 4 above, wherein the spacer is arranged over the entire area in the heat exchange medium distribution direction at the intermediate connecting portion.

［６］前記一方側伝熱部および前記他方側伝熱部の内部にインナーフィンが設けられ、
前記一方側伝熱部および前記他方側伝熱部と、前記インナーフィンとが接合されるとともに、
前記インナーフィンにおける前記中間連結部側の端縁に、前記一方側伝熱部および前記他方側伝熱部の前記外装体において対向し合う一対の表皮部のうち、内側の表皮部に対して接合されていない非接合部が設けられている前項２～５のいずれか１項に記載の熱交換器。 [6] Inner fins are provided inside the one-side heat transfer portion and the other-side heat transfer portion.
The one-side heat transfer portion, the other-side heat transfer portion, and the inner fin are joined together with each other.
Joined to the end edge of the inner fin on the intermediate connecting portion side with respect to the inner epidermis portion of the pair of epidermis portions facing each other in the exterior body of the one-side heat transfer portion and the other-side heat transfer portion. The heat exchanger according to any one of items 2 to 5 above, which is provided with a non-joint portion that is not provided.

［７］前記中間連結部の前記外装体において対向し合う一対の表皮部のうち、少なくとも内側の表皮部に、その表皮部の一部が弛んで内側に膨出した弛み変形部が設けられている前項２～６のいずれか１項に記載の熱交換器。 [7] Of the pair of epidermis portions facing each other in the exterior body of the intermediate connecting portion, at least the inner epidermis portion is provided with a slack deformed portion in which a part of the epidermis portion is loosened and bulges inward. The heat exchanger according to any one of items 2 to 6 above.

［８］金属製の伝熱層の少なくとも片面に樹脂層が積層されたラミネート材によって表皮部が形成された外装体を備え、かつ平パネル状に形成された半製品を作製する工程と、
前記半製品における前記外装体を、中間連結部と、その中間連結部の一方側に設けられた一方側伝熱部と、他方側に設けられた他方側伝熱部とに区分けするとともに、前記中間連結部を折曲することによって、前記一方側伝熱部と前記他方側伝熱部とを互いに間隔をおいて並列に配置する工程とを含み、
前記一方側伝熱部の出入口から流入した熱交換媒体が、前記一方側伝熱部、前記中間連結部および前記他方側伝熱部を流通して前記外装体から流出するように構成された熱交換器を製造するようにしたことを特徴とする熱交換器の製造方法。 [8] A step of producing a semi-finished product having an exterior body in which a skin portion is formed by a laminated material in which a resin layer is laminated on at least one surface of a metal heat transfer layer and formed in a flat panel shape.
The exterior body of the semi-finished product is divided into an intermediate connecting portion, a one-side heat transfer portion provided on one side of the intermediate connecting portion, and a other-side heat transfer portion provided on the other side. It includes a step of arranging the one-side heat transfer portion and the other-side heat transfer portion in parallel at intervals from each other by bending the intermediate connecting portion.
Heat configured so that the heat exchange medium flowing in from the inlet / outlet of the one-side heat transfer portion flows through the one-side heat transfer portion, the intermediate connecting portion, and the other-side heat transfer portion and flows out from the exterior body. A method for manufacturing a heat exchanger, characterized in that the exchanger is manufactured.

発明［１］の熱交換器によれば、折曲状の中間連結部を介して両伝熱部が互いに略平行に配置されているため、両伝熱部間が中間連結部によって連通接続されている。このため、両伝熱部をそれぞれ熱交換器として利用しつつ、両伝熱部間を連通接続するための中間ヘッダー部材等の別途取り付ける必要がなくその分、部品点数を削減できて、構造の簡素化を図ることができる。さらに熱交換器を製作するに際して、中間ヘッダー部材等の別部品を組み付ける必要がなくその分、組付作業数を削減できて、生産効率を向上させることができる。 According to the heat exchanger of the invention [1], since both heat transfer portions are arranged substantially parallel to each other via the bent intermediate connecting portion, the two heat transfer portions are communicated and connected by the intermediate connecting portion. ing. Therefore, while using both heat transfer parts as heat exchangers, it is not necessary to separately attach an intermediate header member or the like for communicating and connecting the two heat transfer parts, and the number of parts can be reduced by that amount. It can be simplified. Further, when manufacturing a heat exchanger, it is not necessary to assemble another part such as an intermediate header member, and the number of assembly operations can be reduced by that amount, and the production efficiency can be improved.

発明［２］の熱交換器によれば、中間連結部内にスペーサを配置しているため、折曲状の中間連結部の流通路を広く確保でき、良好な流動特性を得ることができ、高い熱交換性能を確実に得ることができる。 According to the heat exchanger of the invention [2], since the spacer is arranged in the intermediate connecting portion, a wide flow path of the bent intermediate connecting portion can be secured, and good flow characteristics can be obtained, which is high. Heat exchange performance can be reliably obtained.

発明［３］の熱交換器によれば、スペーサが、少なくとも外側の表皮部に接合されているため、スペーサの位置ずれを確実に防止することができ、良好な流動特性をより確実に得ることができる。 According to the heat exchanger of the present invention [3], since the spacer is bonded to at least the outer skin portion, it is possible to reliably prevent the spacer from being displaced, and to obtain good flow characteristics more reliably. Can be done.

発明［４］の熱交換器によれば、中間連結部における内側の表皮部とスペーサとが非接合状態であるため、内側の表皮部が、スペーサ等の影響を受けずに所望の形状に折曲されることにより、所定の流通路を確保でき、熱交換媒体の流動特性をより向上させることができる。 According to the heat exchanger of the invention [4], since the inner skin portion and the spacer in the intermediate connecting portion are in a non-bonded state, the inner skin portion is folded into a desired shape without being affected by the spacer or the like. By being bent, a predetermined flow path can be secured, and the flow characteristics of the heat exchange medium can be further improved.

発明［５］の熱交換器によれば、中間連結部の全域にスペーサが設けられているため、中間連結部全域において良好な流通路を確実に確保でき、良好な流動特性をより一層確実に得ることができる。 According to the heat exchanger of the invention [5], since the spacer is provided in the entire area of the intermediate connection portion, a good flow path can be surely secured in the entire area of the intermediate connection portion, and good flow characteristics can be more reliably obtained. Obtainable.

発明［６］の熱交換器によれば、インナーフィンにおける中間連結部側の端縁が、内側表皮部に接合されていない非接触部を形成しているため、内側表皮部のインナーフィン端縁との接触部に曲げ応力が集中するのを回避できて応力を分散でき、表皮部の破損を防止でき、耐久性を向上させることができる。 According to the heat exchanger of the invention [6], since the end edge of the inner fin on the intermediate connecting portion side forms a non-contact portion that is not joined to the inner skin portion, the inner fin end edge of the inner skin portion is formed. It is possible to prevent bending stress from concentrating on the contact portion with, disperse the stress, prevent damage to the skin portion, and improve durability.

発明［７］の熱交換器によれば、折曲状の中間連結部における内側の表皮部に形成される弛み変形部を、内側に膨出するように形成しているため、弛み変形部が流通路を閉塞するような不具合をより確実に防止でき、より一層流動特性を向上させることができる。 According to the heat exchanger of the invention [7], since the slack deformed portion formed on the inner epidermis portion in the bent intermediate connecting portion is formed so as to bulge inward, the slack deformed portion is formed. It is possible to more reliably prevent problems such as blocking the flow passage, and further improve the flow characteristics.

発明［８］の熱交換器の製造方法によれば、上記の熱交換器の製造プロセスを特定しているため、上記の効果を有する熱交換器を確実に製造することができる。 According to the method for manufacturing a heat exchanger according to the invention [8], since the manufacturing process for the heat exchanger is specified, it is possible to reliably manufacture the heat exchanger having the above effects.

図１はこの発明の第１実施形態である熱交換器を示す断面図である。FIG. 1 is a cross-sectional view showing a heat exchanger according to the first embodiment of the present invention. 図２は第１実施形態の熱交換器を折り曲げる前の状態で示す図であって、図（ａ）は平面図、図（ｂ）は断面図である。2A and 2B are views showing a state before bending the heat exchanger of the first embodiment, where FIG. 2A is a plan view and FIG. 2B is a sectional view. 図３はこの発明の第２実施形態である熱交換器における中間連結部の周辺を示す断面図である。FIG. 3 is a cross-sectional view showing the periphery of the intermediate connecting portion in the heat exchanger according to the second embodiment of the present invention. 図４は第２実施形態の熱交換器に採用されたスペーサを示す斜視図である。FIG. 4 is a perspective view showing a spacer adopted in the heat exchanger of the second embodiment. 図５はこの発明の第３実施形態である熱交換器における中間連結部の周辺を示す断面図である。FIG. 5 is a cross-sectional view showing the periphery of the intermediate connecting portion in the heat exchanger according to the third embodiment of the present invention. 図６は第３実施形態の熱交換器に採用されたスペーサを示す斜視図である。FIG. 6 is a perspective view showing a spacer adopted in the heat exchanger of the third embodiment. 図７はこの発明の第４実施形態である熱交換器における中間連結部の周辺を示す断面図である。FIG. 7 is a cross-sectional view showing the periphery of the intermediate connecting portion in the heat exchanger according to the fourth embodiment of the present invention. 図８は第４実施形態の熱交換器に採用されたスペーサにおける折曲前の状態の斜視図である。FIG. 8 is a perspective view of the spacer used in the heat exchanger of the fourth embodiment in a state before bending.

＜第１実施形態＞
図１および図２はこの発明の第１実施形態である熱交換器Ｐ１を示す図である。両図に示すように第１実施形態の熱交換器Ｐ１は、熱交換対象部材（冷却対象部材）Ｂとしての自動車用バッテリー装置等の冷却用に用いられるものであって、図２に示すように平面視長方形状の熱交換器作製用の半製品（前製品）１を図１に示すように２つ折りに折り曲げることによって形成されている。 <First Embodiment>
1 and 2 are views showing the heat exchanger P1 according to the first embodiment of the present invention. As shown in both figures, the heat exchanger P1 of the first embodiment is used for cooling an automobile battery device or the like as a heat exchange target member (cooling target member) B, and is as shown in FIG. It is formed by folding a semi-finished product (previous product) 1 for manufacturing a heat exchanger having a rectangular shape in a plan view in half as shown in FIG.

半製品１は、ケーシングとしての袋状の外装体２を備えている。半製品１としての外装体２は、細長い平パネル状を有しており、ラミネート材によって構成される一対の表皮フィルム（表皮部）２ａ，２ｂがその外周縁部が熱融着によって接合一体化されて形成されている。 The semi-finished product 1 includes a bag-shaped exterior body 2 as a casing. The exterior body 2 as a semi-finished product 1 has an elongated flat panel shape, and a pair of skin films (skin parts) 2a and 2b composed of a laminated material are joined and integrated with their outer peripheral edges by heat fusion. Is formed.

本実施形態においてラミネート材は、金属箔製の伝熱層と、その伝熱層の両面に積層一体化された熱可塑性樹脂製の樹脂層とを備えている。伝熱層を構成する金属は特に限定されるものではないが、アルミニウム（その合金を含む）等を好適に用いることができる。さらに樹脂層を構成する樹脂も特に限定されるものではないが、ポリエチレンやポリプロピレン等のポリオレフィン系の樹脂を好適に用いることができる。 In the present embodiment, the laminated material includes a heat transfer layer made of metal foil and a resin layer made of a thermoplastic resin laminated and integrated on both sides of the heat transfer layer. The metal constituting the heat transfer layer is not particularly limited, but aluminum (including an alloy thereof) or the like can be preferably used. Further, the resin constituting the resin layer is not particularly limited, but a polyolefin-based resin such as polyethylene or polypropylene can be preferably used.

また本発明において用いられるラミネート材は、伝熱層の少なくとも片面側に樹脂製の層が形成された２層以上の構造であれば良く、本実施形態のように３層構造であっても、４層以上の構造であっても良い。 Further, the laminated material used in the present invention may have a structure of two or more layers in which a resin layer is formed on at least one side of the heat transfer layer, and may have a three-layer structure as in the present embodiment. It may have a structure of four or more layers.

本実施形態において、半製品１の外装体２における長さ方向の中間部は、中間連結部２２として構成されて、その中間連結部２２を境に、中間連結部２２よりも一方側（例えば図２の左側）が一方側伝熱部である一方側伝熱パネル２１として構成されるとともに、他方側（例えば図２の右側）が他方側伝熱部であるの他方側伝熱パネル２１として構成されている。言うまでもなく本実施形態においては、図２の右側を一方側伝熱パネル２１とし、左側を他方側伝熱パネル２１として構成しても良い。 In the present embodiment, the intermediate portion in the length direction of the exterior body 2 of the semi-finished product 1 is configured as an intermediate connecting portion 22, and the intermediate connecting portion 22 is defined as a boundary on one side of the intermediate connecting portion 22 (for example, FIG. The left side of 2) is configured as the one-side heat transfer panel 21 which is the one-side heat transfer unit, and the other side (for example, the right side of FIG. 2) is configured as the other side heat transfer panel 21 which is the other side heat transfer unit. Has been done. Needless to say, in the present embodiment, the right side of FIG. 2 may be configured as the one-side heat transfer panel 21, and the left side may be configured as the other-side heat transfer panel 21.

また外装体１の両端部における図２の上側の表皮フィルム２ｂの両端部には、換言すると、両側伝熱パネル２１，２１の端部には、出入口２５，２５がそれぞれ設けられている。 Further, in other words, entrances 25 and 25 are provided at both ends of the upper skin film 2b in FIG. 2 at both ends of the exterior body 1, in other words, at the ends of the heat transfer panels 21 and 21 on both sides.

両伝熱パネル２１，２１の内部には、出入口２５，２５にそれぞれ対応してヘッダー部材３，３が設けられている。ヘッダー部材３，３は、半製品１の状態において出入口２５，２５を介して上方に突出するように一体成形されるパイプ部３１，３１と、伝熱パネル２１，２１内において中間連結部２２側に向けて開口する開口部３２，３２とをそれぞれ備えている。パイプ部３１および開口部３２はヘッダー部材３の内部の中空部に連通しており、パイプ部３１の先端は半製品１（熱交換器Ｐ１）の外部に開放されており、開口部３２は伝熱パネル２１内に開放されている。 Inside the heat transfer panels 21 and 21, header members 3 and 3 are provided corresponding to the entrances 25 and 25, respectively. The header members 3 and 3 are integrally molded so as to project upward through the inlets and outlets 25 and 25 in the state of the semi-finished product 1, and the intermediate connecting portions 22 side in the heat transfer panels 21 and 21. It is provided with openings 32 and 32 that open toward the surface, respectively. The pipe portion 31 and the opening 32 communicate with the hollow portion inside the header member 3, the tip of the pipe portion 31 is open to the outside of the semi-finished product 1 (heat exchanger P1), and the opening 32 is transmitted. It is open to the inside of the heat panel 21.

ヘッダー部材３は、硬質合成樹脂の成形品によって構成されており、ヘッダー部材３の外周面における外装体２との接触部が熱融着によって接合一体化されて、ヘッダー部材３が外装体２に固定されている。 The header member 3 is made of a molded product of a hard synthetic resin, and the contact portion with the exterior body 2 on the outer peripheral surface of the header member 3 is joined and integrated by heat fusion, and the header member 3 is joined to the exterior body 2. It is fixed.

外装体２の伝熱パネル２１内におけるヘッダー部材３および中間連結部２２間には、内芯材としてのインナーフィン４が収容されている。 An inner fin 4 as an inner core material is housed between the header member 3 and the intermediate connecting portion 22 in the heat transfer panel 21 of the exterior body 2.

インナーフィン４は、上記外装体２を構成するラミネート材と同様なラミネート材によって構成されている。すなわちインナーフィン４は、ラミネート材が波状に成形された成形品によって構成されている。この波状のインナーフィン４が、その谷筋方向および山筋方向が図１の左右方向に沿うように配置された状態で、山頂面および谷底面が上下の表皮フィルム２ａ，２ｂに熱融着によって接合一体化されて、インナーフィン４が外装体２に固定されている。 The inner fin 4 is made of the same laminating material as the laminating material constituting the exterior body 2. That is, the inner fin 4 is composed of a molded product in which the laminated material is molded in a wavy shape. The wavy inner fins 4 are arranged so that the valley line direction and the mountain line direction are along the left-right direction of FIG. 1, and the mountain top surface and the valley bottom surface are heat-sealed to the upper and lower skin films 2a and 2b. The inner fin 4 is fixed to the exterior body 2 by being joined and integrated.

以上の構成の半製品１において、図１に示すように中間連結部２２の部分がＵ字状に折曲されて、一方側伝熱パネル２１が他方側伝熱パネル２１に対面するように折り返すように配置される。これにより、折曲状の中間連結部２２を介して、一方側伝熱パネル２１と他方側伝熱パネル２１とが互いに間隔をおいて平行（並列）に配置された本第１実施形態の熱交換器Ｐ１が形成される。 In the semi-finished product 1 having the above configuration, as shown in FIG. 1, the portion of the intermediate connecting portion 22 is bent in a U shape, and the one-side heat transfer panel 21 is folded back so as to face the other-side heat transfer panel 21. Arranged like this. As a result, the heat of the first embodiment is arranged in parallel (parallel) with the one-side heat transfer panel 21 and the other-side heat transfer panel 21 spaced apart from each other via the bent intermediate connecting portion 22. The exchanger P1 is formed.

この構成の熱交換器Ｐ１においては例えば、両熱交換パネル２１間にバッテリー装置等の冷却対象部材Ｂを配置した状態で使用する。すなわちその状態において、冷却水等の熱交換媒体（冷媒）を一方側のヘッダー部材３内にパイプ部３１を介して流入し、その冷却水を開口部３２から一方側伝熱パネル２１内に流入させる。さらにその冷却水を一方側伝熱パネル２１に通過させた後、中間連結部２２を介して他方側伝熱パネル２１に流入させる。さらにその冷却水を他方側伝熱パネル２１に通過させた後、他方側のヘッダー部材３内に開口部３２から流入させて、そこからパイプ部３１を介して外部に流出させる。 In the heat exchanger P1 having this configuration, for example, it is used in a state where a cooling target member B such as a battery device is arranged between both heat exchange panels 21. That is, in that state, a heat exchange medium (refrigerant) such as cooling water flows into the header member 3 on one side through the pipe portion 31, and the cooling water flows into the heat transfer panel 21 on one side from the opening 32. Let me. Further, after the cooling water is passed through the one-side heat transfer panel 21, it is allowed to flow into the other-side heat transfer panel 21 via the intermediate connecting portion 22. Further, after the cooling water is passed through the heat transfer panel 21 on the other side, it is made to flow into the header member 3 on the other side from the opening 32, and then flows out from there through the pipe portion 31.

こうして冷却水を熱交換器Ｐ１内に循環させて、その循環する冷却水と、両伝熱パネル２１，２１に接触配置された冷却対象部材Ｂとの間で熱交換させることによって、冷却対象部材Ｂを冷却するものである。 In this way, the cooling water is circulated in the heat exchanger P1 and heat is exchanged between the circulating cooling water and the cooling target member B arranged in contact with both heat transfer panels 21 and 21 to cause the cooling target member. It cools B.

なお本実施形態の熱交換器Ｐ１は、複数並列に配置して使用することもできる。すなわち間隔をおいて並列に配置した複数の熱交換器Ｐ１において、上記したように各熱交換器Ｐ１の両伝熱パネル２１，２１間に冷却対象部材Ｂを配置する一方、隣り合う熱交換器Ｐ１の各間において対面し合う伝熱パネル２１，２１間に冷却対象部材Ｂを配置する。これにより、伝熱パネル２１と冷却対象部材Ｂとを交互に多数配置し、その状態で、既述したように各伝熱パネル２１に冷却水を循環させて、冷却対象部材Ｂを冷却することもできる。 A plurality of heat exchangers P1 of the present embodiment can be arranged and used in parallel. That is, in a plurality of heat exchangers P1 arranged in parallel at intervals, the cooling target member B is arranged between the heat transfer panels 21 and 21 of each heat exchanger P1 as described above, while the adjacent heat exchangers are arranged. The cooling target member B is arranged between the heat transfer panels 21 and 21 facing each other between P1. As a result, a large number of heat transfer panels 21 and cooling target members B are alternately arranged, and in that state, cooling water is circulated through each heat transfer panel 21 as described above to cool the cooling target member B. You can also.

以上のように本実施形態の熱交換器Ｐ１によれば、半製品１としての外装体２を中間連結部２２と、その両側の伝熱パネル２１，２１とに区分けして、中間連結部２２を折り曲げることによって形成しているため、それぞれ熱交換部材（熱交換器）として機能する一対の伝熱パネル２１，２１が中間連結部２２によって連通接続された構造となる。このため両側の伝熱パネル２１，２１間を連通接続するための冷媒Ｕターン用の中間ヘッダー部材等を別途取り付ける必要がなく、その分、部品点数を削減できて、構造の簡素化を図ることができる。その上さらに熱交換器Ｐ１を製作するに際して、中間ヘッダー部材等の別部品を組み付ける必要がなく、その分、組付作業数を削減できて、生産効率の向上を図ることができる。 As described above, according to the heat exchanger P1 of the present embodiment, the exterior body 2 as a semi-finished product 1 is divided into an intermediate connecting portion 22 and heat transfer panels 21 and 21 on both sides thereof, and the intermediate connecting portion 22 is divided. The pair of heat transfer panels 21 and 21 each functioning as a heat exchange member (heat exchanger) are connected to each other by an intermediate connecting portion 22. Therefore, it is not necessary to separately attach an intermediate header member for the refrigerant U-turn to connect the heat transfer panels 21 and 21 on both sides separately, and the number of parts can be reduced by that amount, and the structure can be simplified. Can be done. Further, when manufacturing the heat exchanger P1, it is not necessary to assemble another part such as an intermediate header member, and the number of assembly operations can be reduced by that amount, and the production efficiency can be improved.

なお上記実施形態においては、外装体２の両表皮フィルム２ａ，２ｂ同士を接合固定する際や、外装体２と、ヘッダー部材３およびインナーフィン４とを接合固定するに際して、熱融着によって溶着接合する場合を例に挙げて説明したが、熱融着だけに限られず、本発明においては、溶剤を用いて溶着（融着）しても良いし、接着剤を用いて接着接合するようにしても良い。さらにこれらの接合方式は、以下の第２～第４実施形態で説明するように、外装体２とスペーサ５とを接合する場合においても同様に採用することができる。 In the above embodiment, when both the skin films 2a and 2b of the exterior body 2 are bonded and fixed to each other, and when the exterior body 2 is bonded and fixed to the header member 3 and the inner fin 4, they are welded and bonded by heat welding. Although the case of this is described as an example, the present invention is not limited to heat welding, and in the present invention, welding (fusing) may be performed using a solvent, or adhesive bonding may be performed using an adhesive. Is also good. Further, these joining methods can be similarly adopted in the case of joining the exterior body 2 and the spacer 5 as described in the second to fourth embodiments below.

＜第２実施形態＞
図３はこの発明の第２実施形態である熱交換器Ｐ２の中間連結部２２の周辺を示す断面図、図４は第２実施形態の熱交換器Ｐ２に採用されたスペーサ５を示す斜視図である。 <Second Embodiment>
FIG. 3 is a cross-sectional view showing the periphery of the intermediate connecting portion 22 of the heat exchanger P2 according to the second embodiment of the present invention, and FIG. 4 is a perspective view showing the spacer 5 adopted in the heat exchanger P2 of the second embodiment. Is.

両図に示すように本第２実施形態の熱交換器Ｐ２においては、スペーサ５によって中間連結部２２内の流路断面積を十分に確保して冷却水の流動特性を向上させて熱交換性能（冷却性能）を向上させるものである。 As shown in both figures, in the heat exchanger P2 of the second embodiment, the spacer 5 sufficiently secures the cross-sectional area of the flow path in the intermediate connecting portion 22 to improve the flow characteristics of the cooling water and improve the heat exchange performance. It improves (cooling performance).

すなわち図１に示す第１実施形態の熱交換器Ｐ１において、中間連結部２２を構成する外装体２の一対（両側）の表皮フィルム２ａ，２ｂのうち、外側に配置される表皮フィルム２ｂに対し、内側に配置される表皮フィルム２ａの方は距離（寸法）が短くなるため、図１の想像線に示すように、内側の表皮フィルム２ａが外側に弛んで、その弛み変形部２３が外側の表皮フィルム２ｂ側に近接して一対の表皮フィルム２ａ，２ｂ間の冷媒流通路が閉鎖される場合がある。こうして流通路が閉鎖されると、冷却水の流動特性が低下して熱交換性能が低下するおそれがある。 That is, in the heat exchanger P1 of the first embodiment shown in FIG. 1, among the pair (both sides) of the skin films 2a and 2b of the exterior body 2 constituting the intermediate connecting portion 22, the skin film 2b arranged on the outer side Since the distance (dimensions) of the inner skin film 2a is shorter, the inner skin film 2a is loosened outward and the slack deformed portion 23 is on the outer side, as shown by the imaginary line in FIG. The refrigerant flow passage between the pair of skin films 2a and 2b may be closed in the vicinity of the skin film 2b side. When the flow passage is closed in this way, the flow characteristics of the cooling water may deteriorate and the heat exchange performance may deteriorate.

そこで本第２実施形態の熱交換器Ｐ２においては、中間連結部２２内の流通路が閉鎖されないように、一対の表皮フィルム２ａ，２ｂ間にスペーサ５を介在して流通路の通路断面積を大きく確保するようにしている。 Therefore, in the heat exchanger P2 of the second embodiment, the passage cross-sectional area of the flow passage is formed by interposing a spacer 5 between the pair of skin films 2a and 2b so that the flow passage in the intermediate connecting portion 22 is not closed. I try to secure a large size.

図４に示すように本第２実施形態において、スペーサ５は、渦巻コイル（スプリング）状に形成された硬質合成樹脂の成形品によって構成されている。 As shown in FIG. 4, in the second embodiment, the spacer 5 is made of a molded product of a hard synthetic resin formed in a spiral coil (spring) shape.

図３に示すようにこのスペーサ５が外装体２の中間連結部２２内に収容された状態で、一対の表皮フィルム２ａ，２ｂのうち、外側の表皮フィルム２ｂに熱融着によって溶着接合されて、外装体２に固定されている。なおスペーサ５は、外装体２を折り曲げる前の半製品１の状態（図２参照）で中間連結部２２内に収容固定されており、そのスペーサ取付済の半製品１が折り曲げられて、熱交換器Ｐ２が製作されるものである（以下の第３実施形態でも同様である）。 As shown in FIG. 3, in a state where the spacer 5 is housed in the intermediate connecting portion 22 of the exterior body 2, it is welded and bonded to the outer skin film 2b of the pair of skin films 2a and 2b by heat welding. , It is fixed to the exterior body 2. The spacer 5 is housed and fixed in the intermediate connecting portion 22 in the state of the semi-finished product 1 (see FIG. 2) before the exterior body 2 is bent, and the semi-finished product 1 to which the spacer is attached is bent to exchange heat. The vessel P2 is manufactured (the same applies to the third embodiment below).

この第２実施形態の熱交換器Ｐ２において他の構成は、上記第１実施形態の熱交換器Ｐ１と実質的に同様であるため、同一または相当部分に同一符号を付して重複説明は省略する。 Since the other configurations of the heat exchanger P2 of the second embodiment are substantially the same as those of the heat exchanger P1 of the first embodiment, the same or corresponding parts are designated by the same reference numerals and duplicate description is omitted. do.

この第２実施形態の熱交換器Ｐ２においても上記第１実施形態の熱交換器Ｐ１と同様の効果を得ることができる。 The heat exchanger P2 of the second embodiment can also obtain the same effect as the heat exchanger P1 of the first embodiment.

その上さらに、第２実施形態の熱交換器Ｐ２においては、中間連結部２２内にスペーサ５を配置して、中間連結部２２の流通路を広く確保しているため、折り曲げによって中間連結部２２の流通路が閉鎖されるような不具合を防止でき、良好な流動特性を得ることができ、高い熱交換性能を確実に得ることができる。 Further, in the heat exchanger P2 of the second embodiment, since the spacer 5 is arranged in the intermediate connecting portion 22 to secure a wide flow path of the intermediate connecting portion 22, the intermediate connecting portion 22 is bent. It is possible to prevent problems such as the flow passage being closed, obtain good flow characteristics, and reliably obtain high heat exchange performance.

また本第２実施形態の熱交換器Ｐ２においては、スペーサ５を中間連結部２２における一対の表皮フィルム２ａ，２ｂのうち、外側の表皮フィルム２ｂにのみ溶着し、内側の表皮フィルム２ａに対しては溶着等を行わずに非接合状態（非固定状態）とし、内側の表皮フィルム２ａがスペーサ５に対し拘束されずフリーな状態となっている。このため、中間連結部２２を所望の折曲形状に形成することができる。 Further, in the heat exchanger P2 of the second embodiment, the spacer 5 is welded only to the outer skin film 2b of the pair of skin films 2a and 2b in the intermediate connecting portion 22 to the inner skin film 2a. Is in a non-bonded state (non-fixed state) without welding or the like, and the inner skin film 2a is not restrained by the spacer 5 and is in a free state. Therefore, the intermediate connecting portion 22 can be formed into a desired bent shape.

すなわち折曲加工される中間連結部２２における内側の表皮フィルム２ａは弛み等によって、スペーサ５に対し大きく変位するため、仮に内側の表皮フィルム２ａをスペーサ５に溶着固定していると、スペーサ５の影響により内側の表皮フィルム２ａをスムーズに変形できず、内側表皮フィルム２ａを所望の形状に折曲することが困難になるおそれがある。 That is, the inner skin film 2a in the intermediate connecting portion 22 to be bent is largely displaced with respect to the spacer 5 due to slack or the like. Therefore, if the inner skin film 2a is welded and fixed to the spacer 5, the spacer 5 Due to the influence, the inner skin film 2a cannot be smoothly deformed, and it may be difficult to bend the inner skin film 2a into a desired shape.

そこで本実施形態のように、内側の表皮フィルム２ａとスペーサ５とを非接合状態とすることにより、内側の表皮フィルム２ａを、スペーサ５の存在にかかわらず自由に変形できて、内側表皮フィルム２ａを所望の形状に折曲することができる。従って、中間連結部２２を良好な折曲形状に形成でき、冷却水の流動特性をより向上させることができる。 Therefore, as in the present embodiment, by making the inner skin film 2a and the spacer 5 non-bonded, the inner skin film 2a can be freely deformed regardless of the presence of the spacer 5, and the inner skin film 2a can be freely deformed. Can be bent into a desired shape. Therefore, the intermediate connecting portion 22 can be formed into a good bent shape, and the flow characteristics of the cooling water can be further improved.

なおスペーサ５は、外側の表皮フィルム２ｂに溶着固定されているため、スペーサ５の位置ずれを確実に防止することができ、良好な流動特性をより確実に得ることができる。 Since the spacer 5 is welded and fixed to the outer skin film 2b, the spacer 5 can be reliably prevented from being displaced, and good flow characteristics can be obtained more reliably.

もっとも本発明においては、スペーサ５を、内側および外側の表皮フィルム２ａ，２ｂの両側に溶着固定しても良いし、内側の表皮フィルム２ａにのみ溶着固定しても良いし、両表皮フィルム２ａ，２ｂのいずれにも溶着固定せずに非接合としても良い（以下の第３および第４実施形態においても同じ）。 However, in the present invention, the spacer 5 may be welded and fixed to both sides of the inner and outer skin films 2a and 2b, may be welded and fixed only to the inner skin film 2a, or both skin films 2a,. It may be non-bonded without being welded and fixed to any of 2b (the same applies to the third and fourth embodiments below).

＜第３実施形態＞
図５はこの発明の第３実施形態である熱交換器Ｐ３の中間連結部２２の周辺を示す断面図、図６は第３実施形態の熱交換器Ｐ３に採用されたスペーサ６を示す斜視図である。 <Third Embodiment>
FIG. 5 is a cross-sectional view showing the periphery of the intermediate connecting portion 22 of the heat exchanger P3 according to the third embodiment of the present invention, and FIG. 6 is a perspective view showing the spacer 6 adopted in the heat exchanger P3 of the third embodiment. Is.

両図に示すようにこの第３実施形態の熱交換器Ｐ３においては、スペーサ６の形状が、上記第２実施形態のスペーサ５と異なっている。 As shown in both figures, in the heat exchanger P3 of the third embodiment, the shape of the spacer 6 is different from that of the spacer 5 of the second embodiment.

すなわち本第３実施形態に採用されるスペーサ６は、断面山型形状（逆Ｕ時形状）の合成樹脂の成形品によって構成されている。さらにこのスペーサ６には、山筋方向に沿って（図５の紙面に対し垂直方向に沿って）多数の開口部６１が所定の間隔おきに形成されている。 That is, the spacer 6 adopted in the third embodiment is made of a molded product of a synthetic resin having a mountain-shaped cross section (inverted U o'clock shape). Further, a large number of openings 61 are formed in the spacer 6 along the mountain line direction (perpendicular to the paper surface of FIG. 5) at predetermined intervals.

このスペーサ６が外装体２の中間連結部２２内に収容された状態で、一対の表皮フィルム２ａ，２ｂのうち、外側の表皮フィルム２ｂにのみ熱溶着によって溶着接合されて、外装体２に固定されている。 With the spacer 6 housed in the intermediate connecting portion 22 of the exterior body 2, only the outer skin film 2b of the pair of skin films 2a and 2b is welded and bonded by heat welding and fixed to the exterior body 2. Has been done.

この第３実施形態の熱交換器Ｐ３において他の構成は、上記第２実施形態の熱交換器Ｐ２と実質的に同様であるため、同一または相当部分に同一符号を付して重複説明は省略する。 Since the other configurations of the heat exchanger P3 of the third embodiment are substantially the same as those of the heat exchanger P2 of the second embodiment, the same or corresponding parts are designated by the same reference numerals and duplicate description is omitted. do.

この第３実施形態の熱交換器Ｐ３においても、上記第２実施形態の熱交換器Ｐ２と同様の効果を得ることができる。 The heat exchanger P3 of the third embodiment can also obtain the same effect as the heat exchanger P2 of the second embodiment.

なお上記第２および第３実施形態においては、スペーサ５，６を中間連結部２２の中間位置に一つ配置する場合を例に挙げて説明したが、それだけに限られず、本発明においては、スペーサ５，６を中間連結部２２の冷媒流通方向に沿って複数並べて配置するようにしても良い。この場合には、スペーサ５，６が中間連結部２２の折曲部の広い範囲にわたって形成されるため、以下に説明する第４実施形態と同様の効果を得ることができる。 In the second and third embodiments, the case where one of the spacers 5 and 6 is arranged at the intermediate position of the intermediate connecting portion 22 has been described as an example, but the present invention is not limited to this, and the spacer 5 is used in the present invention. , 6 may be arranged side by side along the refrigerant flow direction of the intermediate connecting portion 22. In this case, since the spacers 5 and 6 are formed over a wide range of the bent portion of the intermediate connecting portion 22, the same effect as that of the fourth embodiment described below can be obtained.

＜第４実施形態＞
図７はこの発明の第４実施形態である熱交換器Ｐ４の中間連結部２２の周辺を示す断面図、図８は第４実施形態の熱交換器Ｐ４に採用されたスペーサ７を曲げ変形前の状態で示す斜視図である。 <Fourth Embodiment>
FIG. 7 is a cross-sectional view showing the periphery of the intermediate connecting portion 22 of the heat exchanger P4 according to the fourth embodiment of the present invention, and FIG. 8 shows the spacer 7 adopted in the heat exchanger P4 of the fourth embodiment before bending and deformation. It is a perspective view which shows in the state of.

両図に示すようにこの第４実施形態の熱交換器Ｐ４においては、スペーサ７が中間連結部２２の冷媒流通方向の全域にわたって配置されている。 As shown in both figures, in the heat exchanger P4 of the fourth embodiment, the spacer 7 is arranged over the entire area of the intermediate connecting portion 22 in the refrigerant flow direction.

このスペーサ７は、波形形状を有する合成樹脂の成形品によって構成されている。さらにこのスペーサ７は、山頂部および谷底部間の立ち上がり部に、山筋方向（谷筋方向）に沿って所定の間隔おきに多数の開口部６１が形成されている。 The spacer 7 is made of a molded product of synthetic resin having a corrugated shape. Further, in this spacer 7, a large number of openings 61 are formed at predetermined intervals along the mountain line direction (valley line direction) at the rising portion between the mountain top and the valley bottom.

このスペーサ７が、外装体２の中間連結部２２内に収容される。この際、スペーサ７の山筋方向（谷筋方向）は、インナーフィン４の山筋方向（谷筋方向）と直交するように配置されるとともに、折曲された中間連結部２２の全域にわたって配置されている。 The spacer 7 is housed in the intermediate connecting portion 22 of the exterior body 2. At this time, the spacer 7 is arranged so as to be orthogonal to the mountain line direction (valley line direction) of the inner fin 4, and is arranged over the entire area of the bent intermediate connecting portion 22. Has been done.

またスペーサ７はその折曲部外側が、中間連結部２２における一対の表皮フィルム２ａ，２ｂのうち、外側の表皮フィルム２ｂにのみ熱融着によって溶着接合されている。なお内側の表皮フィルム２ａは、スペーサ７の折曲部内側に対し非接合状態であり、拘束されずにフリーな状態となっている。 Further, the outer side of the bent portion of the spacer 7 is welded and bonded only to the outer skin film 2b of the pair of skin films 2a and 2b in the intermediate connecting portion 22 by heat welding. The inner skin film 2a is in a non-bonded state to the inside of the bent portion of the spacer 7, and is in a free state without being restrained.

さらに本実施形態において、インナーフィン４における中間連結部２２側の端縁には、両伝熱パネル２１，２１における一対の表皮フィルム２ａ，２ｂのうち、内側の表皮フィルム２ａに対して溶着等によって接合されてない非接合部（非固定部）４１が設けられており、その非接合部４１において、表皮フィルム２ａはインナーフィン４に対し拘束されずフリーな状態となっている。 Further, in the present embodiment, the edge of the inner fin 4 on the intermediate connecting portion 22 side is welded to the inner skin film 2a of the pair of skin films 2a and 2b of both heat transfer panels 21 and 21 by welding or the like. A non-joined portion (non-fixed portion) 41 that is not joined is provided, and in the non-joined portion 41, the skin film 2a is not restrained by the inner fin 4 and is in a free state.

また本実施形態の熱交換器Ｐ４においては、折曲された中間連結部２２における内側の表皮フィルム２ａに、その弛みによって形成される弛み変形部２４が、内側に膨出するように形成されている。 Further, in the heat exchanger P4 of the present embodiment, the slack deformed portion 24 formed by the slack is formed on the inner skin film 2a of the bent intermediate connecting portion 22 so as to bulge inward. There is.

なおこの第４実施形態の熱交換器Ｐ４においても上記と同様、平パネル状の半製品１の段階（図２参照）で外装体２内にヘッダー部材３、インナーフィン４およびスペーサ７が収容されて所要部分が溶着固定されている。そしてその半製品１が中間連結部２２においてスペーサ７と共に折曲されることによって、本第４実施形態の熱交換器Ｐ４が製作されるものである。 Also in the heat exchanger P4 of the fourth embodiment, the header member 3, the inner fin 4 and the spacer 7 are housed in the exterior body 2 at the stage of the flat panel-shaped semi-finished product 1 (see FIG. 2) as described above. The required part is welded and fixed. Then, the semi-finished product 1 is bent together with the spacer 7 at the intermediate connecting portion 22, so that the heat exchanger P4 of the fourth embodiment is manufactured.

この第４実施形態の熱交換器Ｐ４において他の構成は、上記各実施形態と実質的に同様であるため、同一または相当部分に同一符号を付して重複説明は省略する。 Since the other configurations of the heat exchanger P4 of the fourth embodiment are substantially the same as those of the above embodiments, the same or corresponding parts are designated by the same reference numerals and duplicate description will be omitted.

この第４実施形態の熱交換器Ｐ４においても上記各実施形態と同様の効果を得ることができる。 The same effect as that of each of the above-described embodiments can be obtained in the heat exchanger P4 of the fourth embodiment.

その上さらに本第４実施形態の熱交換器Ｐ４においては、中間連結部２２の全域にわたってスペーサ７が配置されているため、冷媒の流動特性をより一層向上させることができる。 Further, in the heat exchanger P4 of the fourth embodiment, since the spacer 7 is arranged over the entire area of the intermediate connecting portion 22, the flow characteristics of the refrigerant can be further improved.

すなわち図３の想像線に示すように中間連結部２２におけるスペーサ５が設置されていない部分においては、内側の表皮フィルム２ａが弛んでその弛み変形部２３が外側の表皮フィルム２ｂに近接配置されて、流通路の一部を閉塞して冷媒の流動特性を低下させるおそれがある。 That is, as shown in the imaginary line of FIG. 3, in the portion of the intermediate connecting portion 22 where the spacer 5 is not installed, the inner skin film 2a is loosened and the loosened deformed portion 23 is arranged close to the outer skin film 2b. , There is a risk of blocking part of the flow path and degrading the flow characteristics of the refrigerant.

そこで本実施形態においては、中間連結部（折曲部）２２の全域にスペーサ５を設置することによって、中間連結部２２の全域において流通路断面を大きく確保でき、良好な流動特性をより確実に得ることができる。 Therefore, in the present embodiment, by installing the spacer 5 in the entire area of the intermediate connecting portion (bent portion) 22, a large flow passage cross section can be secured in the entire area of the intermediate connecting portion 22, and good flow characteristics can be more reliably obtained. Obtainable.

また第４実施形態の熱交換器Ｐ４においては、折曲された中間連結部２２における内側の表皮フィルム２ａに形成される弛み変形部２４を、内側に膨出するように形成しているため、弛み変形部２４が冷媒流通路を閉塞するような不具合をより確実に防止でき、より一層流動特性を向上させることができる。 Further, in the heat exchanger P4 of the fourth embodiment, since the slack deformed portion 24 formed on the inner skin film 2a in the bent intermediate connecting portion 22 is formed so as to bulge inward. It is possible to more reliably prevent the slack deformation portion 24 from blocking the refrigerant flow passage, and further improve the flow characteristics.

また第４実施形態の熱交換器Ｐ４においては、インナーフィン４の中間連結部２２側の端縁に、両伝熱パネル２１，２１における内側の表皮フィルム２ａに対して溶着接合しない非接合部４１を形成しているため、インナーフィン４の端縁による内側表皮フィルム２ａの傷付き等の不具合を確実に防止することができる。 Further, in the heat exchanger P4 of the fourth embodiment, the non-bonded portion 41 that is not weld-bonded to the inner skin films 2a of both heat transfer panels 21 and 21 at the edge of the inner fin 4 on the intermediate connecting portion 22 side. Therefore, it is possible to reliably prevent defects such as scratches on the inner skin film 2a due to the edge of the inner fin 4.

すなわちインナーフィン４の端縁を内側表皮フィルム２ａに溶着接合している状態では、中間連結部２２を折曲加工した際に、内側表皮フィルム２ａのインナーフィン端縁との接触部に曲げ応力が集中して、その接触部の表皮フィルム２ａが破損し、場合によっては液漏れが発生して耐久性を低下させるおそれがある。 That is, in a state where the edge of the inner fin 4 is welded to the inner fin film 2a, bending stress is applied to the contact portion of the inner fin film 2a with the inner fin edge when the intermediate connecting portion 22 is bent. If concentrated, the skin film 2a at the contact portion may be damaged, and in some cases, liquid leakage may occur, which may reduce the durability.

そこで本実施形態においては、インナーフィン４の端縁に、内側表皮フィルム２ａに接合されていない非接触部４１を形成しているため、中間連結部２２を折曲加工した際に、内側表皮フィルム２ａのインナーフィン端縁との接触部に曲げ応力が集中するのを回避できて応力を分散でき、表皮フィルム２ａの破損を防止でき、耐久性を向上させることができる。 Therefore, in the present embodiment, since the non-contact portion 41 not joined to the inner skin film 2a is formed on the edge of the inner fin 4, the inner skin film is formed when the intermediate connecting portion 22 is bent. It is possible to prevent bending stress from concentrating on the contact portion of 2a with the end edge of the inner fin, disperse the stress, prevent damage to the skin film 2a, and improve durability.

なお上記実施形態においては、この発明の熱交換器を冷却器として使用する場合を例に挙げて説明したが、それだけに限られず、本発明に採用される熱交換器は、加熱装置（加熱器）として使用することもできる。 In the above embodiment, the case where the heat exchanger of the present invention is used as a cooler has been described as an example, but the present invention is not limited to this, and the heat exchanger adopted in the present invention is a heating device (heater). Can also be used as.

この発明の熱交換器の連結構造は、例えばハイブリッド自動車、電気自動車等に採用される電動機駆動用バッテリー装置等の発熱体を冷却するための冷却装置として好適に用いることができる。 The connected structure of the heat exchanger of the present invention can be suitably used as a cooling device for cooling a heating element such as a battery device for driving an electric motor adopted in a hybrid vehicle, an electric vehicle, or the like.

１：半製品
２：外装体
２ａ：内側表皮フィルム（内側表皮部）
２ｂ：外側表皮フィルム（外側表皮部）
２１：伝熱パネル
２２：中間連結部
２４：弛み変形部
２５：出入口
４：インナーフィン
４１：非接合部
５～７：スペーサ
Ｐ１～Ｐ４：熱交換器 1: Semi-finished product 2: Exterior body 2a: Inner epidermis film (inner epidermis part)
2b: Outer epidermis film (outer epidermis)
21: Heat transfer panel 22: Intermediate connecting part 24: Loose deformed part 25: Doorway 4: Inner fin 41: Non-joined part 5 to 7: Spacer P1 to P4: Heat exchanger

Claims (8)

金属製の伝熱層の少なくとも片面に樹脂層が積層されたラミネート材によって表皮部が形成された外装体を備えた熱交換器であって、
前記外装体が、中間連結部と、その中間連結部の一方側に設けられた一方側伝熱部と、他方側に設けられた他方側伝熱部とに区分けされ、
折曲状に形成された前記中間連結部を介して、前記一方側伝熱部と前記他方側伝熱部とが互いに間隔をおいて並列に配置され、
前記一方側伝熱部の出入口から流入した熱交換媒体が、前記一方側伝熱部、前記中間連結部および前記他方側伝熱部を流通して前記他方側伝熱部の出入口から流出するように構成されたことを特徴とする熱交換器。 A heat exchanger having an exterior body in which a skin portion is formed by a laminated material in which a resin layer is laminated on at least one surface of a metal heat transfer layer.
The exterior body is divided into an intermediate connecting portion, a one-sided heat transfer portion provided on one side of the intermediate connecting portion, and a other-side heat transfer portion provided on the other side.
The one-side heat transfer portion and the other-side heat transfer portion are arranged in parallel at intervals from each other via the intermediate connecting portion formed in a bent shape.
The heat exchange medium that has flowed in from the inlet / outlet of the one-side heat transfer portion flows through the one-side heat transfer portion, the intermediate connecting portion, and the other-side heat transfer portion, and flows out from the inlet / outlet of the other-side heat transfer portion. A heat transfer device characterized by being configured in. 前記中間連結部の内部に、その内部の流路断面積を確保するためのスペーサが設けられている請求項１に記載の熱交換器。 The heat exchanger according to claim 1, wherein a spacer is provided inside the intermediate connecting portion to secure the cross-sectional area of the flow path inside the intermediate connecting portion. 前記中間連結部の前記外装体において対向し合う一対の表皮部のうち、少なくとも外側の表皮部に前記スペーサが接合されている請求項２に記載の熱交換器。 The heat exchanger according to claim 2, wherein the spacer is joined to at least the outer skin portion of the pair of skin portions facing each other in the exterior body of the intermediate connecting portion. 前記一対の表皮部のうち、内側の表皮部に前記スペーサが接合されていない請求項３に記載の熱交換器。 The heat exchanger according to claim 3, wherein the spacer is not joined to the inner skin portion of the pair of skin portions. 前記スペーサは、前記中間連結部における熱交換媒体流通方向の全域にわたって配置されている請求項２～４のいずれか１項に記載の熱交換器。 The heat exchanger according to any one of claims 2 to 4, wherein the spacer is arranged over the entire area in the heat exchange medium distribution direction in the intermediate connecting portion. 前記一方側伝熱部および前記他方側伝熱部の内部にインナーフィンが設けられ、
前記一方側伝熱部および前記他方側伝熱部と、前記インナーフィンとが接合されるとともに、
前記インナーフィンにおける前記中間連結部側の端縁に、前記一方側伝熱部および前記他方側伝熱部の前記外装体において対向し合う一対の表皮部のうち、内側の表皮部に対して接合されていない非接合部が設けられている請求項２～５のいずれか１項に記載の熱交換器。 Inner fins are provided inside the one-side heat transfer section and the other-side heat transfer section.
The one-side heat transfer portion, the other-side heat transfer portion, and the inner fin are joined together with each other.
Joined to the end edge of the inner fin on the intermediate connecting portion side with respect to the inner epidermis portion of the pair of epidermis portions facing each other in the exterior body of the one-side heat transfer portion and the other-side heat transfer portion. The heat exchanger according to any one of claims 2 to 5, which is provided with a non-joint portion that is not provided. 前記中間連結部の前記外装体において対向し合う一対の表皮部のうち、少なくとも内側の表皮部に、その表皮部の一部が弛んで内側に膨出した弛み変形部が設けられている請求項２～６のいずれか１項に記載の熱交換器。 A claim that a slack deformed portion in which a part of the epidermis portion is loosened and bulges inward is provided at least on the inner epidermis portion of the pair of epidermis portions facing each other in the exterior body of the intermediate connecting portion. The heat exchanger according to any one of 2 to 6. 金属製の伝熱層の少なくとも片面に樹脂層が積層されたラミネート材によって表皮部が形成された外装体を備え、かつ平パネル状に形成された半製品を作製する工程と、
前記半製品における前記外装体を、中間連結部と、その中間連結部の一方側に設けられた一方側伝熱部と、他方側に設けられた他方側伝熱部とに区分けするとともに、前記中間連結部を折曲することによって、前記一方側伝熱部と前記他方側伝熱部とを互いに間隔をおいて並列に配置する工程とを含み、
前記一方側伝熱部の出入口から流入した熱交換媒体が、前記一方側伝熱部、前記中間連結部および前記他方側伝熱部を流通して前記外装体から流出するように構成された熱交換器を製造するようにしたことを特徴とする熱交換器の製造方法。
A process for producing a semi-finished product having an exterior body in which a skin portion is formed by a laminated material in which a resin layer is laminated on at least one surface of a metal heat transfer layer and formed in a flat panel shape.
The exterior body of the semi-finished product is divided into an intermediate connecting portion, a one-side heat transfer portion provided on one side of the intermediate connecting portion, and a other-side heat transfer portion provided on the other side. It includes a step of arranging the one-side heat transfer portion and the other-side heat transfer portion in parallel at intervals from each other by bending the intermediate connecting portion.
Heat configured so that the heat exchange medium flowing in from the inlet / outlet of the one-side heat transfer portion flows through the one-side heat transfer portion, the intermediate connecting portion, and the other-side heat transfer portion and flows out from the exterior body. A method for manufacturing a heat exchanger, characterized in that the exchanger is manufactured.
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