JP6434786B2 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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JP6434786B2
JP6434786B2 JP2014238389A JP2014238389A JP6434786B2 JP 6434786 B2 JP6434786 B2 JP 6434786B2 JP 2014238389 A JP2014238389 A JP 2014238389A JP 2014238389 A JP2014238389 A JP 2014238389A JP 6434786 B2 JP6434786 B2 JP 6434786B2
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cap
heat exchanger
header tank
bodies
outer peripheral
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JP2016099088A (en
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雄一 松元
雄一 松元
浩隆 門
浩隆 門
祐介 飯野
祐介 飯野
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Sanden Holdings Corp
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Sanden Holdings Corp
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Priority to JP2014238389A priority Critical patent/JP6434786B2/en
Priority to DE112015005298.4T priority patent/DE112015005298B4/en
Priority to PCT/JP2015/082355 priority patent/WO2016084669A1/en
Priority to CN201580063431.5A priority patent/CN107003087B/en
Publication of JP2016099088A publication Critical patent/JP2016099088A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

この発明は、熱交換器に係り、特に、ヘッダタンクに形成された開口部を密閉する熱交換器用キャップが設けられた熱交換器に関する。   The present invention relates to a heat exchanger, and more particularly to a heat exchanger provided with a heat exchanger cap that seals an opening formed in a header tank.

従来から、空調装置などにおいて、内部を流通する熱交換流体と外部を流通する外部流体との間で熱交換を行う熱交換器が用いられている。例えば、熱交換器は、互いに平行に延びると共に所定の間隔を空けて配置された一対のヘッダタンクと、この一対のヘッダタンクの間を接続する熱交換体とをそれぞれ有する複数の熱交換器コアを並列配置して構成される。一対のヘッダタンクと熱交換体は、内部を熱交換流体が流通可能に形成されており、一対のヘッダタンクに供給される熱交換流体を熱交換体に順次流通させることにより、熱交換体の外部を流通する外部流体との間で熱交換を行うことができる。この時、一対のヘッダタンクの端部には内部と外部を連通する開口部が形成されており、この開口部を熱交換器用キャップで密閉することにより、熱交換流体を流出させることなく熱交換体内に流通させることができる。   Conventionally, in an air conditioner or the like, a heat exchanger that performs heat exchange between a heat exchange fluid that circulates inside and an external fluid that circulates outside has been used. For example, the heat exchanger includes a plurality of heat exchanger cores each having a pair of header tanks extending in parallel with each other and spaced apart from each other, and a heat exchanger that connects the pair of header tanks. Are arranged in parallel. The pair of header tanks and the heat exchanging body are formed so that the heat exchanging fluid can flow therethrough, and by sequentially flowing the heat exchanging fluid supplied to the pair of header tanks through the heat exchanging body, Heat exchange can be performed with an external fluid that circulates outside. At this time, an opening that communicates the inside and the outside is formed at the ends of the pair of header tanks, and this opening is sealed with a heat exchanger cap so that heat exchange can be performed without causing the heat exchange fluid to flow out. It can be distributed in the body.

ここで、熱交換器用キャップは、ロウ材などの接合材を用いてヘッダタンクの端部に接合されている。このため、例えば適量の接合材が付与されずに熱交換器用キャップの接合に欠陥が生じている場合には、内部を流通する熱交換流体の圧力などにより接合が破壊されて、熱交換器用キャップがヘッダタンクの端部から勢いよく飛散するといった問題があった。近年、二酸化炭素などの高圧化して用いる熱交換流体が利用されており、その危険性が高くなるおそれがある。特に、自動車などの搭乗者に近い位置に配置される熱交換器では危険性がさらに高くなるため、熱交換器用キャップをヘッダタンクの端部に確実に接合することが求められている。   Here, the cap for heat exchanger is joined to the end of the header tank using a joining material such as a brazing material. For this reason, for example, when a suitable amount of bonding material is not applied and a defect occurs in the bonding of the heat exchanger cap, the bonding is broken due to the pressure of the heat exchange fluid circulating inside, and the heat exchanger cap However, there was a problem that it scattered violently from the end of the header tank. In recent years, heat exchange fluids that are used at high pressure, such as carbon dioxide, have been used, which may increase the risk. In particular, a heat exchanger disposed at a position close to a passenger such as an automobile has a higher risk. Therefore, it is required to reliably join the heat exchanger cap to the end of the header tank.

そこで、熱交換器用キャップを確実に接合する技術として、特許文献１には、ヘッダタンクの端部間に架け渡し可能な大きさの架橋プレートにより構成され、その架橋プレートに、ヘッダタンクの開口縁部に対応して円弧状の開口縁部挿入孔がそれぞれ設けられた熱交換器用キャップが開示されている。この熱交換器用キャップでは、開口縁部挿入孔にヘッダタンクの開口縁部を挿入することで熱交換器用キャップの位置ずれが防止されるため、接合材を一定の精度で付与することができ、接合の欠陥を抑制することができる。   Therefore, as a technique for reliably joining the heat exchanger cap, Patent Document 1 includes a bridging plate having a size that can be bridged between the end portions of the header tank. The bridging plate includes an opening edge of the header tank. There is disclosed a heat exchanger cap provided with arc-shaped opening edge insertion holes corresponding to the portions. In this heat exchanger cap, since the displacement of the heat exchanger cap is prevented by inserting the opening edge of the header tank into the opening edge insertion hole, the bonding material can be given with a certain accuracy, Bonding defects can be suppressed.

特許第４１０９７４６号公報Japanese Patent No. 4109746

しかしながら、特許文献１の熱交換器用キャップは、ヘッダタンクの端部から飛散する勢いを抑制するものではなく、ヘッダタンクとの接合が破壊された場合には勢いよく飛散するおそれがあるため、その危険性を大きく低減することはできなかった。   However, the cap for the heat exchanger of Patent Document 1 does not suppress the momentum scattered from the end of the header tank, and when the joint with the header tank is broken, there is a risk that it will splash momentarily. The risk could not be greatly reduced.

この発明は、このような従来の問題点を解消するためになされたもので、ヘッダタンクの端部から熱交換器用キャップが飛散する勢いを抑制することができる熱交換器を提供することを目的とする。   This invention was made in order to solve such a conventional problem, and it aims at providing the heat exchanger which can suppress the momentum which the cap for heat exchangers scatters from the edge part of a header tank. And

この発明に係る熱交換器は、内部を熱交換流体が流通可能に形成された複数の熱交換体と、互いに平行に延びると共に端部に開口部が形成された筒形状を有し、内部に供給される熱交換流体が順次流通するように複数の熱交換体に接続された複数のヘッダタンクと、複数のヘッダタンクの開口部の内側にそれぞれ対応して配置されると共に開口部を形成するヘッダタンクの内周部に間隔を空けて対向する外周部を有し且つヘッダタンクの内周部との間が接合されることにより複数のヘッダタンクの開口部を密閉する複数のキャップ本体と、複数のキャップ本体を互いに連結する連結部とを有する熱交換器用キャップと、キャップ本体の外周部とヘッダタンクの内周部との間隔を変化させるように形成され、キャップ本体の外周部およびヘッダタンクの内周部の少なくとも一方に、同一方向に延びる複数のキャップ本体の中間線で区分けされる一半部側と他半部側のうち一半部側に偏るように設けられた間隔変化部とを備えるものである。   A heat exchanger according to the present invention has a plurality of heat exchangers formed so that a heat exchange fluid can flow therethrough, and a cylindrical shape extending in parallel with each other and having an opening at an end. A plurality of header tanks connected to the plurality of heat exchangers so that the supplied heat exchange fluid sequentially flows, and the openings are arranged corresponding to the insides of the openings of the plurality of header tanks, respectively. A plurality of cap bodies that have an outer peripheral portion facing the inner peripheral portion of the header tank at an interval and are sealed between the inner peripheral portions of the header tank to seal the openings of the plurality of header tanks; A cap for a heat exchanger having a connecting portion for connecting a plurality of cap bodies to each other, and an outer peripheral portion of the cap main body and a header formed so as to change a distance between the outer peripheral portion of the cap main body and the inner peripheral portion of the header tank. A distance changing portion provided on at least one of the inner peripheral portions of the ink tank so as to be biased toward one half side of the other half side and one half side divided by the intermediate lines of the plurality of cap bodies extending in the same direction. It is to be prepared.

ここで、間隔変化部は、一半部側と他半部側のうち一半部側に数が偏るように設けることが好ましい。   Here, it is preferable that the interval changing portion is provided so that the number is deviated toward one half portion of the one half portion side and the other half portion side.

また、複数のキャップ本体は、一列に配列され、間隔変化部は、複数のキャップ本体の中心を結ぶように延びる中間線で区分けされた一半部側と他半部側のうち一半部側に偏るように設けることが好ましい。   Further, the plurality of cap bodies are arranged in a line, and the interval changing portion is biased to one half side of the one half side and the other half side separated by an intermediate line extending so as to connect the centers of the plurality of cap bodies. It is preferable to provide as described above.

また、間隔変化部は、ヘッダタンクの内周部に圧入するようにキャップ本体の外周部から突出して設けることができる。   The interval changing portion can be provided so as to protrude from the outer peripheral portion of the cap body so as to be press-fitted into the inner peripheral portion of the header tank.

この発明に係る熱交換器は、内部を熱交換流体が流通可能に形成された複数の熱交換体と、互いに平行に延びると共に端部に開口部が形成された筒形状を有し、内部に供給される熱交換流体が順次流通するように複数の熱交換体に接続された複数のヘッダタンクと、複数のヘッダタンクの開口部の内側にそれぞれ対応して配置されると共に開口部を形成するヘッダタンクの内周部に対向する外周部を有し且つヘッダタンクの内周部との間が接合されることにより複数のヘッダタンクの開口部を密閉する複数のキャップ本体と、複数のキャップ本体を互いに連結する連結部とを有する熱交換器用キャップと、熱交換器用キャップの両端に位置する２つのキャップ本体のうち一方のキャップ本体をヘッダタンクに係合させる係合部とを備え、係合部は、一方のキャップ本体の外周部から延出する係合延出部と、係合延出部に対応してヘッダタンクを貫通するように設けられた係合受け部とを有し、係合延出部を係合受け部に挿入して一方のキャップ本体をヘッダタンクに係合させるものである。 A heat exchanger according to the present invention has a plurality of heat exchangers formed so that a heat exchange fluid can flow therethrough, and a cylindrical shape extending in parallel with each other and having an opening at an end. A plurality of header tanks connected to the plurality of heat exchangers so that the supplied heat exchange fluid sequentially flows, and the openings are arranged corresponding to the insides of the openings of the plurality of header tanks, respectively. A plurality of cap bodies having an outer peripheral portion facing the inner peripheral portion of the header tank and sealing the openings of the plurality of header tanks by being joined to the inner peripheral portion of the header tank; the provided heat exchanger cap having a connecting portion for connecting and an engagement portion engaging one of the cap body to the header tank of the two cap body located at both ends of the heat exchanger cap together, engage Has an engagement extension part extending from the outer peripheral part of one cap body, and an engagement receiving part provided so as to penetrate the header tank corresponding to the engagement extension part. The extension portion is inserted into the engagement receiving portion, and one cap body is engaged with the header tank .

また、熱交換器用キャップは、両端に位置する２つのキャップ本体のうち他方のキャップ本体の外周部から延出する支持延出部を有し、ヘッダタンクは、内周部を切欠いた切欠き部を有し、切欠き部に支持延出部が収容されることにより周方向に支持されることが好ましい。   The heat exchanger cap has a support extension extending from the outer periphery of the other cap body of the two cap bodies located at both ends, and the header tank has a notch formed by cutting out the inner periphery. It is preferable that the support extending portion is accommodated in the notch and is supported in the circumferential direction.

この発明によれば、キャップ本体の外周部およびヘッダタンクの内周部の少なくとも一方に、同一方向に延びる複数のキャップ本体の中間線で区分けされる一半部側と他半部側のうち一半部側に偏るように間隔変化部が設けられるので、ヘッダタンクの端部から熱交換器用キャップが飛散する勢いを抑制することができる熱交換器を提供することが可能となる。   According to this invention, at least one of the outer peripheral part of the cap body and the inner peripheral part of the header tank is divided into one half part and the other half part part separated by the intermediate line of the plurality of cap bodies extending in the same direction. Since the interval changing portion is provided so as to be biased to the side, it is possible to provide a heat exchanger capable of suppressing the momentum at which the heat exchanger cap scatters from the end of the header tank.

この発明の実施の形態１に係る熱交換器の構成を示す斜視図である。It is a perspective view which shows the structure of the heat exchanger which concerns on Embodiment 1 of this invention. ヘッダタンクの端部を示す斜視図である。It is a perspective view which shows the edge part of a header tank. 熱交換器用キャップの構成を示し、（Ａ）は斜視図、（Ｂ）は底面図である。The structure of the cap for heat exchangers is shown, (A) is a perspective view, (B) is a bottom view. ヘッダタンクの端部に取り付けられた熱交換器用キャップを示す図である。It is a figure which shows the cap for heat exchangers attached to the edge part of a header tank. キャップ本体をヘッダタンクに接合する接合材の状態を示す断面図である。It is sectional drawing which shows the state of the joining material which joins a cap main body to a header tank. この発明の実施の形態２に係る熱交換器の要部の構成を示す斜視図である。It is a perspective view which shows the structure of the principal part of the heat exchanger which concerns on Embodiment 2 of this invention. 実施の形態２において熱交換器用キャップがヘッダタンクの端部から外れる様子を示す斜視図である。It is a perspective view which shows a mode that the cap for heat exchangers in Embodiment 2 remove | deviates from the edge part of a header tank. この発明の実施の形態３に係る熱交換器の要部の構成を示す斜視図である。It is a perspective view which shows the structure of the principal part of the heat exchanger which concerns on Embodiment 3 of this invention. キャップ本体の外周部から窪むように形成された間隔変化部を示す底面図である。It is a bottom view which shows the space | interval change part formed so that it might become depressed from the outer peripheral part of a cap main body. キャップ本体の一半部側の外周部のみに設けられた間隔変化部を示す底面図である。It is a bottom view which shows the space | interval change part provided only in the outer peripheral part of the one half part side of a cap main body. キャップ本体の一半部側と他半部側のうち一半部側の外周部に大きさが偏るように設けられた間隔変化部を示す底面図である。It is a bottom view which shows the space | interval change part provided so that a magnitude | size may be biased to the outer peripheral part of the half part side among the half part side and other half part side of a cap main body. キャップ本体の配列方向に直交する方向に延びる中間線でキャップ本体を区分けして設けられた間隔変化部を示す底面図である。It is a bottom view which shows the space | interval change part provided by dividing the cap main body with the intermediate line extended in the direction orthogonal to the arrangement direction of a cap main body. ヘッダタンクの内周部に設けられた間隔変化部を示す図である。It is a figure which shows the space | interval change part provided in the inner peripheral part of the header tank. ヘッダタンクの内周部に設けられた係合部を示す図である。It is a figure which shows the engaging part provided in the inner peripheral part of the header tank.

以下、この発明の実施の形態を添付図面に基づいて説明する。
実施の形態１
図１に、この発明の実施の形態１に係る熱交換器の構成を示す。この熱交換器は、並列配置された３つの熱交換器コア１ａ〜１ｃを有する。熱交換器コア１ａ〜１ｃは、互いに平行に延びると共に所定の間隔を空けて配置された一対のヘッダタンク２ａ〜２ｃと、この一対のヘッダタンク２ａ〜２ｃの間を接続する熱交換体３ａ〜３ｃと、一対のヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに配置される熱交換器用キャップ５とを有する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows the configuration of a heat exchanger according to Embodiment 1 of the present invention. This heat exchanger has three heat exchanger cores 1a to 1c arranged in parallel. The heat exchanger cores 1a to 1c extend in parallel with each other and are disposed at a predetermined interval, and a pair of header tanks 2a to 2c and heat exchangers 3a to 3c that connect the pair of header tanks 2a to 2c. 3c and a heat exchanger cap 5 disposed at the ends 4a to 4c of the pair of header tanks 2a to 2c.

熱交換体３ａ〜３ｃは、一対のヘッダタンク２ａ〜２ｃの間を接続する複数の扁平チューブ６と、複数の扁平チューブ６の間に配置されたフィン７とを有する。複数の扁平チューブ６は、ヘッダタンク２ａ〜２ｃが延びる方向に並列配置され、内部を熱交換流体Ｆが流通可能に形成されている。フィン７は、複数の扁平チューブ６の外壁間を連結すると共に外部流体が熱交換体３ａ〜３ｃの配列方向に通過するように隙間を空けて形成されている。   The heat exchangers 3a to 3c include a plurality of flat tubes 6 that connect between the pair of header tanks 2a to 2c, and fins 7 that are disposed between the plurality of flat tubes 6. The plurality of flat tubes 6 are arranged in parallel in the direction in which the header tanks 2a to 2c extend, and are formed so that the heat exchange fluid F can flow therethrough. The fin 7 connects the outer walls of the plurality of flat tubes 6 and is formed with a gap so that an external fluid passes in the arrangement direction of the heat exchangers 3a to 3c.

ヘッダタンク２ａ〜２ｃは、熱交換器コア１ａ〜１ｃの配列方向に互いに隣接して１列に配列されている。また、ヘッダタンク２ａ〜２ｃは、図２に示すように、端部４ａ〜４ｃに開口部８ａ〜８ｃが形成された円筒形状を有し、内部に供給される熱交換流体Ｆが熱交換体３ａ〜３ｃの複数の扁平チューブ６に順次流通するように複数の扁平チューブ６と接続されている。また、ヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃには、その一部を切欠いた切欠き部９がヘッダタンク２ａ〜２ｃの配列方向に連続して形成されている。   The header tanks 2a to 2c are arranged in a row adjacent to each other in the arrangement direction of the heat exchanger cores 1a to 1c. Moreover, as shown in FIG. 2, the header tanks 2a to 2c have a cylindrical shape in which openings 8a to 8c are formed at the ends 4a to 4c, and the heat exchange fluid F supplied to the inside is a heat exchanger. It connects with the some flat tube 6 so that it may distribute | circulate to the some flat tube 6 of 3a-3c one by one. Further, at the end portions 4a to 4c of the header tanks 2a to 2c, a notch portion 9 in which a part thereof is cut is continuously formed in the arrangement direction of the header tanks 2a to 2c.

熱交換器用キャップ５は、１列に配列されたヘッダタンク２ａ〜２ｃの３つの開口部８ａ〜８ｃを密閉するもので、図３（Ａ）および（Ｂ）に示すように、１列に配列された３つのキャップ本体１１ａ〜１１ｃと、キャップ本体１１ａ〜１１ｃを互いに連結する連結部１２と、キャップ本体１１ｃの外周部１３から延出する支持延出部１４とを有し、キャップ本体１１ａ〜１１ｃの配列方向に延在するように形成されている。
また、キャップ本体１１ａ〜１１ｃの外周部１３には、外側に向かって突出する間隔変化部１５が設けられている。 The heat exchanger cap 5 seals the three openings 8a to 8c of the header tanks 2a to 2c arranged in a row, and is arranged in a row as shown in FIGS. 3 (A) and 3 (B). Each of the cap bodies 11a to 11c thus formed, a connecting portion 12 for connecting the cap bodies 11a to 11c to each other, and a support extending portion 14 extending from the outer peripheral portion 13 of the cap body 11c. It is formed so as to extend in the arrangement direction of 11c.
Moreover, the space | interval change part 15 which protrudes toward the outer side is provided in the outer peripheral part 13 of cap main body 11a-11c.

図４に、ヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに取り付けられた熱交換器用キャップ５を示す。
キャップ本体１１ａ〜１１ｃは、円柱形状を有し、ヘッダタンク２ａ〜２ｃの開口部８ａ〜８ｃの内側にそれぞれ対応して配置される。キャップ本体１１ａ〜１１ｃには、開口部８ａ〜８ｃを形成するヘッダタンク２ａ〜２ｃの内周部との間に間隔を空けて対向すると共にヘッダタンク２ａ〜２ｃの内周部に沿うように外周部１３が形成されている。この外周部１３とヘッダタンク２ａ〜２ｃの内周部との間が、ろう材などの接合材Ｍで接合されることにより、ヘッダタンク２ａ〜２ｃの開口部８ａ〜８ｃが密閉される。 FIG. 4 shows the heat exchanger cap 5 attached to the end portions 4a to 4c of the header tanks 2a to 2c.
The cap bodies 11a to 11c have a columnar shape and are arranged corresponding to the insides of the openings 8a to 8c of the header tanks 2a to 2c, respectively. The cap bodies 11a to 11c are opposed to the inner periphery of the header tanks 2a to 2c forming the openings 8a to 8c with a space therebetween, and the outer periphery so as to follow the inner periphery of the header tanks 2a to 2c. A portion 13 is formed. The outer peripheral portion 13 and the inner peripheral portions of the header tanks 2a to 2c are joined by a joining material M such as a brazing material, whereby the openings 8a to 8c of the header tanks 2a to 2c are sealed.

連結部１２は、キャップ本体１１ａとキャップ本体１１ｂとの間を連結すると共にキャップ本体１１ｂとキャップ本体１１ｃとの間を連結するものである。連結部１２は、キャップ本体１１ａ〜１１ｃの配列方向に延びるように形成されており、ヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに形成された切欠き部９内に収容される。
支持延出部１４は、キャップ本体１１ｃの外周部１３からキャップ本体１１ａ〜１１ｃの配列方向に延出し、ヘッダタンク２ｃの端部４ｃに形成された切欠き部９内に収容される。 The connection part 12 connects between the cap main body 11a and the cap main body 11b, and connects between the cap main body 11b and the cap main body 11c. The connecting part 12 is formed so as to extend in the arrangement direction of the cap bodies 11a to 11c, and is accommodated in the notch part 9 formed in the end parts 4a to 4c of the header tanks 2a to 2c.
The support extension 14 extends from the outer peripheral portion 13 of the cap body 11c in the arrangement direction of the cap bodies 11a to 11c, and is accommodated in a notch 9 formed at the end 4c of the header tank 2c.

間隔変化部１５は、キャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間隔を局所的に変化させるようにキャップ本体１１ａ〜１１ｃの外周部１３から突出して設けられ、滑らかに湾曲する形状を有する。間隔変化部１５は、図３（Ａ）および（Ｂ）に示すように、キャップ本体１１ａ〜１１ｃの中心を結ぶように延びる中間線Ｌで区分けされる一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に数が偏るように設けられている。具体的には、キャップ本体１１ａ〜１１ｃの他半部側Ｈ２の外周部１３には連結部１２から最も離れた位置にそれぞれ１つの間隔変化部１５が形成されているのに対し、キャップ本体１１ａ〜１１ｃの一半部側Ｈ１の外周部１３には連結部１２に隣接する位置にそれぞれ２つの間隔変化部１５が形成されている。   The interval changing portion 15 is provided to protrude from the outer peripheral portion 13 of the cap main bodies 11a to 11c so as to locally change the interval between the outer peripheral portion 13 of the cap main bodies 11a to 11c and the inner peripheral portion of the header tanks 2a to 2c. , Having a smoothly curved shape. As shown in FIGS. 3 (A) and 3 (B), the interval changing portion 15 includes an outer peripheral portion 13 on one half side H1 separated by an intermediate line L extending so as to connect the centers of the cap bodies 11a to 11c and the other half. Of the outer peripheral portion 13 on the part side H2, the outer peripheral portion 13 on the half side H1 is provided so that the number is biased. Specifically, while the outer peripheral portion 13 on the other half side H2 of the cap bodies 11a to 11c is formed with one interval changing portion 15 at the position farthest from the connecting portion 12, the cap body 11a Two interval changing portions 15 are formed at positions adjacent to the connecting portion 12 on the outer peripheral portion 13 of the half portion H1 of ˜11c.

次に、熱交換器用キャップ５をヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに取り付ける方法の一例を説明する。
まず、ろう材などの接合材Ｍをキャップ本体１１ａ〜１１ｃの外面上に被膜処理し、この外面を外側に向けてキャップ本体１１ａ〜１１ｃをヘッダタンク２ａ〜２ｃの開口部８ａ〜８ｃ内に配置すると共に連結部１２と支持延出部１４をヘッダタンク２ａ〜２ｃの切欠き部９内に配置する。
この時、キャップ本体１１ａ〜１１ｃの外周部１３に形成される間隔変化部１５は、ヘッダタンク２ａ〜２ｃの内周部に圧入されるような大きさで形成することが好ましい。これにより、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃに接合材Ｍで接合されるまでの間、キャップ本体１１ａ〜１１ｃの姿勢を一定に保つと共にキャップ本体１１ａ〜１１ｃがヘッダタンク２ａ〜２ｃの開口部８ａ〜８ｃ内から抜け落ちることを防止することができる。 Next, an example of a method for attaching the heat exchanger cap 5 to the end portions 4a to 4c of the header tanks 2a to 2c will be described.
First, the bonding material M such as brazing material is coated on the outer surfaces of the cap bodies 11a to 11c, and the cap bodies 11a to 11c are disposed in the openings 8a to 8c of the header tanks 2a to 2c with the outer surfaces facing outward. At the same time, the connecting portion 12 and the support extending portion 14 are arranged in the notch portion 9 of the header tank 2a to 2c.
At this time, it is preferable to form the space | interval change part 15 formed in the outer peripheral part 13 of the cap main bodies 11a-11c so that it may be press-fitted in the inner peripheral part of the header tanks 2a-2c. Thus, until the heat exchanger cap 5 is joined to the header tanks 2a to 2c with the joining material M, the cap bodies 11a to 11c are kept in a constant posture and the cap bodies 11a to 11c are kept in the header tanks 2a to 2c. It can be prevented from falling out of the openings 8a to 8c.

これにより、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃに仮組され、そのヘッダタンク２ａ〜２ｃが熱交換体３ａ〜３ｃの複数の扁平チューブ６に接続される。この時、熱交換器用キャップ５の連結部１２と支持延出部１４が、ヘッダタンク２ａ〜２ｃの切欠き部９内に収容されているため、ヘッダタンク２ａ〜２ｃが周方向に支持され、ヘッダタンク２ａ〜２ｃが回転するなどの周方向の動きを抑制することができる。これにより、ヘッダタンク２ａ〜２ｃにおける複数の扁平チューブ６との接続位置が一定に保たれるため、ヘッダタンク２ａ〜２ｃを複数の扁平チューブ６にスムーズに接続することができる。   Thereby, the heat exchanger cap 5 is temporarily assembled to the header tanks 2a to 2c, and the header tanks 2a to 2c are connected to the plurality of flat tubes 6 of the heat exchangers 3a to 3c. At this time, since the connection part 12 and the support extension part 14 of the cap 5 for heat exchangers are accommodated in the notch part 9 of the header tanks 2a to 2c, the header tanks 2a to 2c are supported in the circumferential direction, Circumferential movement such as rotation of the header tanks 2a to 2c can be suppressed. Thereby, since the connection positions with the plurality of flat tubes 6 in the header tanks 2 a to 2 c are kept constant, the header tanks 2 a to 2 c can be smoothly connected to the plurality of flat tubes 6.

このようにして組み立てられた熱交換器は、炉内に載置されて高温環境に曝される。これにより、熱交換器用キャップ５の外面上に被膜された接合材Ｍが溶融し、キャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間に生じた隙間に溶融した接合材Ｍが流入する。
この時、溶融した接合材Ｍは、キャップ本体１１ａ〜１１ｃの外周部１３において形状が局所的に変化する間隔変化部１５を起点としてその周囲から流入した後、間隔変化部１５から徐々に広がるように流入する。このため、間隔変化部１５から離れた箇所と比較して間隔変化部１５の近傍には多くの接合材Ｍが流入することになる。ここで、キャップ本体１１ａ〜１１ｃの外周部１３には、他半部側Ｈ２と比較して一半部側Ｈ１に多くの間隔変化部１５が形成されているため、他半部側Ｈ２と比較して一半部側Ｈ１に多くの接合材Ｍが流入する。このため、図５に示すように、一半部側Ｈ１から流入する接合材Ｍは、ヘッダタンク２ａ〜２ｃ内に長く延びるように侵入し、ヘッダタンク２ａ〜２ｃ内に露出する接合材Ｍの露出面Ｅが他半部側Ｈ２と比較して緩やかに湾曲した形状となる。 The heat exchanger assembled in this way is placed in a furnace and exposed to a high temperature environment. As a result, the bonding material M coated on the outer surface of the heat exchanger cap 5 is melted and melted in the gap formed between the outer peripheral portion 13 of the cap bodies 11a to 11c and the inner peripheral portion of the header tanks 2a to 2c. The joined material M flows in.
At this time, the melted bonding material M gradually flows from the gap changing portion 15 after flowing from the gap changing portion 15 whose shape locally changes in the outer peripheral portions 13 of the cap bodies 11a to 11c. Flow into. For this reason, compared with the location away from the space | interval change part 15, many joining materials M will flow into the vicinity of the space | interval change part 15. FIG. Here, since many space | interval change parts 15 are formed in the outer peripheral part 13 of the cap main bodies 11a-11c compared with the other half part side H2, compared with the other half part side H2, compared with the other half part side H2. Thus, a large amount of the bonding material M flows into the half portion H1. For this reason, as shown in FIG. 5, the bonding material M flowing in from the half portion side H <b> 1 enters the header tanks 2 a to 2 c so as to extend long, and the bonding material M exposed in the header tanks 2 a to 2 c is exposed. The surface E has a gently curved shape as compared with the other half side H2.

続いて、キャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間が接合材Ｍで満たされると、熱交換器が炉内から取り出される。これにより、ヘッダタンク２ａ〜２ｃの内周部とキャップ本体１１ａ〜１１ｃの外周部１３との間が接合材Ｍで一体に接合され、ヘッダタンク２ａ〜２ｃの開口部８ａ〜８ｃをキャップ本体１１ａ〜１１ｃで密閉することができる。   Subsequently, when the space between the outer peripheral portion 13 of the cap bodies 11a to 11c and the inner peripheral portion of the header tanks 2a to 2c is filled with the bonding material M, the heat exchanger is taken out from the furnace. Thereby, the inner peripheral part of the header tanks 2a to 2c and the outer peripheral part 13 of the cap bodies 11a to 11c are integrally joined by the joining material M, and the openings 8a to 8c of the header tanks 2a to 2c are connected to the cap body 11a. It can be sealed with ~ 11c.

このようにして、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに取り付けられた熱交換器は、例えば空調装置の蒸発器として用いることができる。
例えば、膨張弁で減圧された二酸化炭素などの熱交換流体Ｆが、図１に示すように、一方のヘッダタンク２ａの端部からヘッダタンク２ａ内に流入され、熱交換体３ａの複数の扁平チューブ６内を流通して他方のヘッダタンク２ａに流入する。続いて、熱交換流体Ｆは、他方のヘッダタンク２ｂに流入して、同様に、熱交換体３ｂの複数の扁平チューブ６内を流通して一方のヘッダタンク２ｂに流入する。このようにして、熱交換流体Ｆは、熱交換器コア１ａ〜１ｃ内を順次流通する。 Thus, the heat exchanger in which the heat exchanger cap 5 is attached to the end portions 4a to 4c of the header tanks 2a to 2c can be used as an evaporator of an air conditioner, for example.
For example, as shown in FIG. 1, a heat exchange fluid F such as carbon dioxide decompressed by an expansion valve flows into the header tank 2a from the end of one header tank 2a, and a plurality of flattening of the heat exchanger 3a. It flows through the tube 6 and flows into the other header tank 2a. Subsequently, the heat exchange fluid F flows into the other header tank 2b, and similarly flows through the plurality of flat tubes 6 of the heat exchange body 3b and flows into the one header tank 2b. In this way, the heat exchange fluid F sequentially flows through the heat exchanger cores 1a to 1c.

この時、熱交換器コア１ａ〜１ｃ内には、例えば約１０ＭＰａの高圧化された熱交換流体Ｆが流通されるため、ヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに取り付けられた熱交換器用キャップ５には大きな圧力が加わる。このため、熱交換器用キャップ５を接合する際の環境の変化などにより接合材Ｍの接合量が少ないといった接合の欠陥が生じている場合には、接合材Ｍによる接合が破壊されて熱交換器用キャップ５が飛散するおそれがある。特に、自動車などで用いられる熱交換器は、搭乗者に近い位置に配置されるため、その危険性は高いものとなる。   At this time, since the heat exchange fluid F having a high pressure of, for example, about 10 MPa is circulated in the heat exchanger cores 1a to 1c, for the heat exchanger attached to the end portions 4a to 4c of the header tanks 2a to 2c. A large pressure is applied to the cap 5. For this reason, in the case where there is a bonding defect such as a small amount of bonding material M due to a change in environment when the heat exchanger cap 5 is bonded, the bonding by the bonding material M is destroyed and the heat exchanger cap is used. The cap 5 may be scattered. In particular, a heat exchanger used in an automobile or the like has a high risk because it is disposed near the passenger.

ここで、ヘッダタンク２ａ〜２ｃ内には、キャップ本体１１ａ〜１１ｃの他半部側Ｈ２と比較して一半部側Ｈ１に多量の接合材Ｍが流入し、その露出面Ｅは一半部側Ｈ１と他半部側Ｈ２とで異なる形状を有する。接合材Ｍの露出面Ｅが一半部側Ｈ１と他半部側Ｈ２とで均一な形状を有する場合には、接合材Ｍによる接合が一度に破壊されて熱交換器用キャップ５は勢いよく飛散するおそれがあるが、接合材Ｍの露出面Ｅを一半部側Ｈ１と他半部側Ｈ２とで異なる形状とすることで、熱交換流体Ｆから露出面Ｅを介して接合材Ｍに加わる応力を一半部側Ｈ１と他半部側Ｈ２とでどちらか一方に偏らせることができる。
例えば、一半部側Ｈ１と比較して他半部側Ｈ２において接合材Ｍに加わる応力が強い場合には、図５に示すように、他半部側Ｈ２の接合が優先的に破壊されて、一半部側Ｈ１に起き上がるようにキャップ本体１１ａ〜１１ｃが開かれる。これにより、キャップ本体１１ａ〜１１ｃの接合を一半部側Ｈ１と他半部側Ｈ２とで段階的に破壊することができ、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散する勢いを抑制することができる。 Here, in the header tanks 2a to 2c, a large amount of the bonding material M flows into the half portion side H1 as compared with the other half portion side H2 of the cap bodies 11a to 11c, and the exposed surface E of the header tanks 2a to 2c is the half portion side H1. And the other half side H2 have different shapes. When the exposed surface E of the bonding material M has a uniform shape on the one half side H1 and the other half side H2, the bonding by the bonding material M is broken at a time, and the heat exchanger cap 5 scatters vigorously. Although there is a possibility, the stress applied to the bonding material M from the heat exchange fluid F through the exposed surface E can be reduced by making the exposed surface E of the bonding material M different in shape on the one half side H1 and the other half side H2. The one half side H1 and the other half side H2 can be biased to either one.
For example, when the stress applied to the bonding material M is strong on the other half side H2 compared to the one half side H1, as shown in FIG. 5, the joining on the other half side H2 is preferentially broken, The cap bodies 11a to 11c are opened so as to get up to the half portion H1. Thereby, joining of the cap main bodies 11a to 11c can be broken in stages on the one half side H1 and the other half side H2, and the heat exchanger cap 5 is removed from the end portions 4a to 4c of the header tanks 2a to 2c. The momentum that scatters can be suppressed.

さらに、キャップ本体１１ａ〜１１ｃは、連結部１２により互いに連結されているため、キャップ本体１１ａ〜１１ｃの一部について接合に欠陥が生じていても、その他のキャップ本体の接合により接合力を補うことができる。例えば、キャップ本体１１ｂとヘッダタンク２ｂとの間が少量の接合材Ｍで接合されている場合には、キャップ本体１１ａとヘッダタンク２ａとの接合およびキャップ本体１１ｃとヘッダタンク２ｃとの接合により接合力を補うことができ、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散することを抑制することができる。   Furthermore, since the cap main bodies 11a to 11c are connected to each other by the connecting portion 12, even if a defect occurs in the bonding of a part of the cap main bodies 11a to 11c, the bonding force is compensated by bonding of the other cap main bodies. Can do. For example, when the cap body 11b and the header tank 2b are joined with a small amount of joining material M, joining is performed by joining the cap body 11a and the header tank 2a and joining the cap body 11c and the header tank 2c. The force can be supplemented, and the heat exchanger cap 5 can be prevented from scattering from the end portions 4a to 4c of the header tanks 2a to 2c.

このようにして、熱交換流体Ｆが熱交換器コア１ａ〜１ｃ内を順次流通する一方、熱交換流体Ｆより暖かい外部流体が、熱交換体３ａ〜３ｃの配列方向にフィン７の間を通って流通する。これにより、外部流体の熱がフィン７を介して熱交換体３ａ〜３ｃ内に伝導され、熱交換流体Ｆと外部流体との間で熱交換が行われることにより、熱交換流体Ｆを気化して外部流体を冷却することができる。
そして、熱交換に伴って気化された熱交換流体Ｆは、図１に示すように、一方のヘッダタンク２ｃの端部から排出される。 In this way, the heat exchange fluid F sequentially flows through the heat exchanger cores 1a to 1c, while the external fluid warmer than the heat exchange fluid F passes between the fins 7 in the arrangement direction of the heat exchange bodies 3a to 3c. Circulate. As a result, heat of the external fluid is conducted into the heat exchange bodies 3a to 3c through the fins 7, and heat exchange is performed between the heat exchange fluid F and the external fluid, thereby vaporizing the heat exchange fluid F. The external fluid can be cooled.
And the heat exchange fluid F vaporized with heat exchange is discharged | emitted from the edge part of one header tank 2c, as shown in FIG.

本実施の形態によれば、間隔変化部１５が一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に数が偏るように設けられているため、キャップ本体１１ａ〜１１ｃとヘッダタンク２ａ〜２ｃの間を接合する接合材Ｍの接合量を偏らせることができ、接合材Ｍによるキャップ本体１１ａ〜１１ｃの接合が段階的に破壊されるため、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散する勢いを抑制することができる。   According to the present embodiment, the interval changing portion 15 is provided so that the number thereof is biased to the outer peripheral portion 13 on the one half side H1 among the outer peripheral portion 13 on the one half side H1 and the outer peripheral portion 13 on the other half side H2. Therefore, the joining amount of the joining material M joining the cap bodies 11a to 11c and the header tanks 2a to 2c can be biased, and the joining of the cap bodies 11a to 11c by the joining material M is broken stepwise. Therefore, the momentum at which the heat exchanger cap 5 scatters from the end portions 4a to 4c of the header tanks 2a to 2c can be suppressed.

実施の形態２
実施の形態１では、キャップ本体１１ａ〜１１ｃの外周部１３に間隔変化部１５を設けることにより、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃから飛散する勢いを抑制したが、キャップ本体１１ａ〜１１ｃとヘッダタンク２ａ〜２ｃとの接合力が偏るように形成されていればよく、これに限られるものではない。 Embodiment 2
In Embodiment 1, although the space | interval change part 15 was provided in the outer peripheral part 13 of cap main body 11a-11c, the cap 5 for heat exchangers suppressed the momentum scattered from header tank 2a-2c, but cap main bodies 11a-11c And the header tanks 2a to 2c may be formed so that the joining force is biased, and the present invention is not limited to this.

例えば、図６に示すように、実施の形態１の熱交換器において、間隔変化部１５を除くと共に、熱交換器用キャップ５の両端に位置する２つのキャップ本体１１ａおよび１１ｃのうちキャップ本体１１ａをヘッダタンク２ａに係合させる係合部２１を新たに設けることができる。
係合部２１は、キャップ本体１１ａの外周部１３からキャップ本体１１ａ〜１１ｃの配列方向に延出する係合延出部２２と、この係合延出部２２に対応してヘッダタンク２ａの内周部に設けられた係合受け部２３とを有する。 For example, as shown in FIG. 6, in the heat exchanger according to the first embodiment, the gap main body 11a is removed from the two cap bodies 11a and 11c located at both ends of the heat exchanger cap 5 while removing the interval changing portion 15. An engaging portion 21 to be engaged with the header tank 2a can be newly provided.
The engagement portion 21 includes an engagement extension portion 22 extending from the outer peripheral portion 13 of the cap body 11a in the arrangement direction of the cap bodies 11a to 11c, and an inner portion of the header tank 2a corresponding to the engagement extension portion 22. And an engagement receiving portion 23 provided on the peripheral portion.

係合受け部２３は、ヘッダタンク２ａの内周部から外側に向かって外壁を貫通するように形成されている。この係合受け部２３に係合延出部２２を挿入することにより、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの延びる方向に移動した際に、係合延出部２２を係合受け部２３に係合させることができる。なお、係合受け部２３は、係合延出部２２を係合させることができればよく、貫通孔に限られるものではない。例えば、ヘッダタンク２ａの内周部に形成された凹部により係合受け部２３を構成することもできる。
熱交換器用キャップ５をヘッダタンク２ａ〜２ｃに取り付ける際には、係合受け部２３に係合延出部２２を挿入しつつ、開口部８ａ〜８ｃ内にキャップ本体１１ａ〜１１ｃが配置されると共に切欠き部９内に連結部１２と支持延出部１４が配置される。そして、実施の形態１と同様に、熱交換器用キャップ５を接合材Ｍによりヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに接合する。 The engagement receiving portion 23 is formed so as to penetrate the outer wall from the inner peripheral portion of the header tank 2a toward the outside. By inserting the engagement extending portion 22 into the engagement receiving portion 23, when the heat exchanger cap 5 moves in the direction in which the header tanks 2a to 2c extend, the engagement extending portion 22 is moved to the engagement receiving portion. 23 can be engaged. In addition, the engagement receiving part 23 should just be able to engage the engagement extension part 22, and is not restricted to a through-hole. For example, the engagement receiving part 23 can also be comprised by the recessed part formed in the inner peripheral part of the header tank 2a.
When the heat exchanger cap 5 is attached to the header tanks 2a to 2c, the cap main bodies 11a to 11c are disposed in the openings 8a to 8c while the engagement extension portion 22 is inserted into the engagement receiving portion 23. At the same time, the connecting portion 12 and the support extending portion 14 are disposed in the notch portion 9. Then, similarly to the first embodiment, the heat exchanger cap 5 is joined to the end portions 4a to 4c of the header tanks 2a to 2c by the joining material M.

このようにして、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃに取り付けられた熱交換器は、内部に熱交換流体Ｆを供給して用いられる。ここで、キャップ本体１１ａから延出する係合延出部２２は、ヘッダタンク２ａに形成された係合受け部２３内に挿入されているのに対し、キャップ本体１１ｃから延出する支持延出部１４は、上部が開放された切欠き部９内に収容されている。このため、接合材Ｍによるキャップ本体１１ａ〜１１ｃとヘッダタンク２ａ〜２ｃとの接合に欠陥が生じている場合には、熱交換流体Ｆの圧力により、支持延出部１４が切欠き部９内から外側に向かって移動する一方で、係合延出部２２が係合受け部２３に係合される。このため、接合材Ｍによるキャップ本体１１ａ〜１１ｃとヘッダタンク２ａ〜２ｃとの接合は、支持延出部１４に近い箇所から順次破壊されて、図７に示すように、係合延出部２２側に起き上がるようにキャップ本体１１ａ〜１１ｃが開かれる。
このように、キャップ本体１１ａ〜１１ｃの接合が支持延出部１４から係合延出部２２に向かって段階的に破壊されるため、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散する勢いを抑制することができる。 Thus, the heat exchanger in which the heat exchanger cap 5 is attached to the header tanks 2a to 2c is used by supplying the heat exchange fluid F therein. Here, the engagement extension part 22 extending from the cap body 11a is inserted into the engagement receiving part 23 formed in the header tank 2a, whereas the support extension extending from the cap body 11c. The part 14 is accommodated in the notch part 9 whose upper part is opened. For this reason, when there is a defect in the joining of the cap bodies 11a to 11c and the header tanks 2a to 2c by the joining material M, the support extension part 14 is formed in the notch part 9 by the pressure of the heat exchange fluid F. On the other hand, the engagement extending portion 22 is engaged with the engagement receiving portion 23 while moving outward from the outer side. For this reason, the joining of the cap main bodies 11a to 11c and the header tanks 2a to 2c by the joining material M is sequentially broken from a position close to the support extension part 14, and the engagement extension part 22 as shown in FIG. The cap bodies 11a to 11c are opened so as to get up to the side.
As described above, since the joining of the cap bodies 11a to 11c is gradually broken from the support extension part 14 toward the engagement extension part 22, the heat exchanger cap 5 is connected to the end parts 4a of the header tanks 2a to 2c. The momentum scattered from ˜4c can be suppressed.

本実施の形態によれば、キャップ本体１１ａとヘッダタンク２ａを係合部２１で係合させることで接合材Ｍによる接合が段階的に破壊されるため、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散する勢いを抑制することができる。   According to the present embodiment, the cap body 11a and the header tank 2a are engaged by the engaging portion 21 so that the joining by the joining material M is broken stepwise. The momentum scattered from the end portions 4a to 4c of 2c can be suppressed.

実施の形態３
実施の形態２では、実施の形態１の間隔変化部１５が除かれたが、図８に示すように、間隔変化部１５を除くことなく、キャップ本体１１ａをヘッダタンク２ａに係合させる係合部３１を新たに設けることができる。
係合部３１は、実施の形態２と同様に、キャップ本体１１ａの外周部１３からキャップ本体１１ａ〜１１ｃの配列方向に延出する係合延出部３２と、この係合延出部３２に対応してヘッダタンク２ａの内周部に設けられた係合受け部３３とを有する。 Embodiment 3
In the second embodiment, the interval changing portion 15 of the first embodiment is removed. However, as shown in FIG. 8, the engagement between the cap main body 11a and the header tank 2a is performed without removing the interval changing portion 15. The part 31 can be newly provided.
Similar to the second embodiment, the engaging portion 31 includes an engaging extension portion 32 extending from the outer peripheral portion 13 of the cap body 11a in the arrangement direction of the cap bodies 11a to 11c, and the engaging extension portion 32. Correspondingly, it has an engagement receiving portion 33 provided on the inner peripheral portion of the header tank 2a.

このような熱交換器用キャップ５をヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃに接合材Ｍで接合する際に接合に欠陥が生じていると、キャップ本体１１ａ〜１１ｃの接合が、一半部側Ｈ１と他半部側Ｈ２とで段階的に破壊されると共に支持延出部１４から係合延出部３２に向かって段階的に破壊される。
これにより、キャップ本体１１ａ〜１１ｃの接合をより多くの多面的な段階を経て破壊することができ、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの端部４ａ〜４ｃから飛散する勢いをより確実に抑制することができる。 When such a heat exchanger cap 5 is joined to the end portions 4a to 4c of the header tanks 2a to 2c with the joining material M, if there is a defect in the joining, the joining of the cap main bodies 11a to 11c is half a side. It is broken stepwise at H1 and the other half H2 and is broken stepwise from the support extension 14 toward the engagement extension 32.
As a result, the joining of the cap bodies 11a to 11c can be broken through more multi-faceted stages, and the momentum at which the heat exchanger cap 5 scatters from the end portions 4a to 4c of the header tanks 2a to 2c is more sure. Can be suppressed.

なお、実施の形態１および３において、間隔変化部１５は、全てのキャップ本体１１ａ〜１１ｃに形成されたが、少なくとも１つのキャップ本体に形成されていればよく、これに限られるものではない。
また、実施の形態１および３において、間隔変化部１５は、キャップ本体１１ａ〜１１ｃの外周部１３から突出するように形成されたが、キャップ本体１１ａ〜１１ｃの外周部１３から窪むように形成することもできる。例えば、図９に示すように、キャップ本体１１ａ〜１１ｃの外周部１３から窪むように形成された間隔変化部４１を設けることができる。 In the first and third embodiments, the interval changing portion 15 is formed in all the cap bodies 11a to 11c, but it is only required to be formed in at least one cap body, and is not limited thereto.
Moreover, in Embodiment 1 and 3, although the space | interval change part 15 was formed so that it might protrude from the outer peripheral part 13 of cap main body 11a-11c, it forms so that it may become depressed from the outer peripheral part 13 of cap main body 11a-11c. You can also. For example, as illustrated in FIG. 9, an interval changing portion 41 formed so as to be recessed from the outer peripheral portion 13 of the cap bodies 11 a to 11 c can be provided.

また、実施の形態１および３において、キャップ本体１１ａ〜１１ｃには、一半部側Ｈ１の外周部１３にそれぞれ２つの間隔変化部１５が形成されると共に他半部側Ｈ２の外周部１３にそれぞれ１つの間隔変化部１５が形成されていたが、一半部側Ｈ１と他半部側Ｈ２のうち一半部側Ｈ１の外周部１３に数が偏るように間隔変化部１５が設けられていればよく、これに限られるものではない。例えば、図１０に示すように、実施の形態１の熱交換器用キャップ５において、他半部側Ｈ２の外周部１３には間隔変化部１５を設けずに、一半部側Ｈ１の外周部１３のみにそれぞれ１つの間隔変化部１５を設けることができる。   Further, in the first and third embodiments, the cap main bodies 11a to 11c are each formed with two interval changing portions 15 on the outer peripheral portion 13 on one half side H1, and on the outer peripheral portion 13 on the other half side H2, respectively. Although one interval changing portion 15 is formed, it is only necessary that the interval changing portion 15 is provided so that the number is biased to the outer peripheral portion 13 of the half portion side H1 of the half portion side H1 and the other half portion side H2. However, it is not limited to this. For example, as shown in FIG. 10, in the heat exchanger cap 5 according to the first embodiment, the outer peripheral portion 13 on the other half side H2 is not provided with the interval changing portion 15, and only the outer peripheral portion 13 on the one half side H1 is provided. One interval changing portion 15 can be provided in each.

また、実施の形態１および３において、間隔変化部１５は、キャップ本体１１ａ〜１１ｃの一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に数が偏るように設けられたが、接合材Ｍを溶融してキャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間に流入させる際に、接合材Ｍの流入量が一半部側Ｈ１と他半部側Ｈ２とで異なるような偏りを有する間隔変化部１５を形成すればよく、これに限られるものではない。例えば、図１１に示すように、実施の形態１の熱交換器用キャップ５において、キャップ本体１１ａ〜１１ｃの一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に大きさが偏るように形成された間隔変化部４２を設けることができる。   Moreover, in Embodiment 1 and 3, the space | interval change part 15 is the outer peripheral part 13 of the half part side H1 among the outer peripheral part 13 of the half part side H1 of the cap main bodies 11a-11c, and the outer peripheral part 13 of the other half part side H2. However, when the bonding material M is melted and flows between the outer peripheral portion 13 of the cap main bodies 11a to 11c and the inner peripheral portion of the header tanks 2a to 2c, the bonding material M What is necessary is just to form the space | interval change part 15 which has the bias | inclination from which the inflow amount differs in one half part side H1 and the other half part side H2, and is not restricted to this. For example, as shown in FIG. 11, in the heat exchanger cap 5 according to the first embodiment, one half side of the outer peripheral portion 13 on one half side H1 and the outer peripheral portion 13 on the other half side H2 of the cap bodies 11a to 11c. An interval changing portion 42 formed to have a size biased to the outer peripheral portion 13 of H1 can be provided.

また、実施の形態１および３において、間隔変化部４２は、キャップ本体１１ａ〜１１ｃの中心を結ぶように延びる中間線Ｌでキャップ本体１１ａ〜１１ｃを区分けした一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に数が偏るように設けられたが、同一方向に延びるキャップ本体１１ａ〜１１ｃの中間線Ｌで区分けした一半部側Ｈ１の外周部１３と他半部側Ｈ２の外周部１３のうち一半部側Ｈ１の外周部１３に数が偏るように設けることができればよく、これに限られるものではない。例えば、図１２に示すように、実施の形態１の熱交換器用キャップ５において、キャップ本体１１ａ〜１１ｃの配列方向に直交する方向に延びるキャップ本体１１ａ〜１１ｃの中間線Ｌで外周部１３をそれぞれ区分けした一半部側Ｈ１と他半部側Ｈ２のうち一半部側Ｈ１の外周部１３に数が偏るように形成された間隔変化部４３を設けることができる。   Moreover, in Embodiment 1 and 3, the space | interval change part 42 and the outer peripheral part 13 of the half part side H1 which divided the cap main bodies 11a-11c by the intermediate line L extended so that the center of cap main bodies 11a-11c may be tied, and others Of the outer peripheral portion 13 of the half portion side H2, the number of the outer peripheral portions 13 of the half portion side H1 is provided so as to be biased, but the half portion side H1 divided by the intermediate line L of the cap bodies 11a to 11c extending in the same direction It is only necessary that the outer peripheral portion 13 and the outer peripheral portion 13 on the other half side H2 can be provided in such a manner that the numbers are biased toward the outer peripheral portion 13 on the one half side H1, and the present invention is not limited to this. For example, as shown in FIG. 12, in the heat exchanger cap 5 according to the first embodiment, the outer peripheral portions 13 are respectively defined by the intermediate lines L of the cap bodies 11a to 11c extending in a direction orthogonal to the arrangement direction of the cap bodies 11a to 11c. The interval changing part 43 formed so that the number is biased to the outer peripheral part 13 of the half part side H1 among the divided half part side H1 and the other half part side H2 can be provided.

また、実施の形態１および３において、間隔変化部１５は、滑らかに湾曲する形状に形成されたが、キャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間に流入する接合材Ｍの流入量を変化させることができればよく、これに限られるものではない。例えば、キャップ本体１１ａ〜１１ｃの外周部１３から三角形状に突出する間隔変化部を設けることもできる。   Moreover, in Embodiment 1 and 3, although the space | interval change part 15 was formed in the shape curved smoothly, it is between the outer peripheral part 13 of the cap main bodies 11a-11c, and the inner peripheral part of the header tanks 2a-2c. It is only necessary to be able to change the inflow amount of the inflowing bonding material M, and is not limited to this. For example, an interval changing portion that protrudes in a triangular shape from the outer peripheral portion 13 of the cap bodies 11a to 11c can be provided.

また、実施の形態１および３において、間隔変化部１５は、キャップ本体１１ａ〜１１ｃの外周部１３に設けられたが、キャップ本体１１ａ〜１１ｃの外周部１３とヘッダタンク２ａ〜２ｃの内周部との間隔を変更するように、キャップ本体１１ａ〜１１ｃの外周部１３およびヘッダタンク２ａ〜２ｃの内周部の少なくとも一方に設ければよく、これに限られるものではない。例えば、図１３に示すように、キャップ本体１１ａ〜１１ｃの中心を結ぶように延びる中間線Ｌでヘッダタンク２ａ〜２ｃの内周部を区分けした一半部側Ｈ１と他半部側Ｈ２のうち一半部側Ｈ１の内周部に数が偏るように形成された間隔変化部４４を設けることができる。   Moreover, in Embodiment 1 and 3, although the space | interval change part 15 was provided in the outer peripheral part 13 of cap main body 11a-11c, the outer peripheral part 13 of cap main body 11a-11c and the inner peripheral part of header tank 2a-2c It should just be provided in at least one of the outer peripheral part 13 of the cap main bodies 11a-11c and the inner peripheral part of the header tanks 2a-2c, and it is not restricted to this. For example, as shown in FIG. 13, one half H1 and the other half H2 in which the inner peripheral portions of the header tanks 2a to 2c are separated by an intermediate line L extending so as to connect the centers of the cap bodies 11a to 11c. The interval changing part 44 formed so that the number is biased can be provided in the inner peripheral part of the part side H1.

また、実施の形態２および３において、係合部は、キャップ本体１１ａの外周部１３からキャップ本体１１ａ〜１１ｃの配列方向に延出する係合延出部と、ヘッダタンク２ａの内周部に設けられた係合受け部とから構成されたが、キャップ本体１１ａをヘッダタンク２ａに係合することができればよく、これに限られるものではない。
例えば、図１４に示すように、実施の形態２の係合部２１に換えて、ヘッダタンク２ａの内周部に係合部４５を設けることができる。この係合部４５は、ヘッダタンク２ａの内周部からキャップ本体１１ａの上面の一部を覆うように突出する形状を有し、熱交換器用キャップ５がヘッダタンク２ａ〜２ｃの延びる方向に移動した際に、ヘッダタンク２ａを係合部４５に係合させることができる。 In the second and third embodiments, the engaging portions are provided on the engaging extension portion extending from the outer peripheral portion 13 of the cap main body 11a in the arrangement direction of the cap main bodies 11a to 11c and the inner peripheral portion of the header tank 2a. However, the present invention is not limited to this, as long as the cap body 11a can be engaged with the header tank 2a.
For example, as shown in FIG. 14, instead of the engaging portion 21 of the second embodiment, an engaging portion 45 can be provided on the inner peripheral portion of the header tank 2a. The engaging portion 45 has a shape protruding from the inner peripheral portion of the header tank 2a so as to cover a part of the upper surface of the cap body 11a, and the heat exchanger cap 5 moves in the extending direction of the header tanks 2a to 2c. In doing so, the header tank 2 a can be engaged with the engaging portion 45.

１ａ〜１ｃ 熱交換器コア、２ａ〜２ｃ 一対のヘッダタンク、３ａ〜３ｃ 熱交換体、４ａ〜４ｃ ヘッダタンクの端部、５ 熱交換器用キャップ、６ 複数の扁平チューブ、７ フィン、８ａ〜８ｃ 開口部、９ 切欠き部、１１ａ〜１１ｃ キャップ本体、１２ 連結部、１３ 外周部、１４ 支持延出部、１５，４１，４２，４３，４４ 間隔変化部、２１，３１，４５ 係合部、２２，３２ 係合延出部、２３，３３ 係合受け部、Ｆ 熱交換流体、Ｌ 中間線、Ｈ１ 一半部側、Ｈ２ 他半部側、Ｍ 接合材。
1a to 1c heat exchanger core, 2a to 2c a pair of header tanks, 3a to 3c heat exchangers, 4a to 4c end of header tank, 5 heat exchanger cap, 6 flat tubes, 7 fins, 8a to 8c Opening part, 9 notch part, 11a-11c cap main body, 12 connecting part, 13 outer peripheral part, 14 support extension part, 15, 41, 42, 43, 44 interval changing part, 21, 31, 45 engaging part, 22, 32 Engagement extension part, 23, 33 Engagement receiving part, F heat exchange fluid, L intermediate line, H1 half side, H2 other half side, M bonding material.

Claims (6)

内部を熱交換流体が流通可能に形成された複数の熱交換体と、
互いに平行に延びると共に端部に開口部が形成された筒形状を有し、内部に供給される前記熱交換流体が順次流通するように複数の前記熱交換体に接続された複数のヘッダタンクと、
複数の前記ヘッダタンクの開口部の内側にそれぞれ対応して配置されると共に前記開口部を形成する前記ヘッダタンクの内周部に間隔を空けて対向する外周部を有し且つ前記ヘッダタンクの内周部との間が接合されることにより複数の前記ヘッダタンクの開口部を密閉する複数のキャップ本体と、複数の前記キャップ本体を互いに連結する連結部とを有する熱交換器用キャップと、
前記キャップ本体の外周部と前記ヘッダタンクの内周部との間隔を変化させるように形成され、前記キャップ本体の外周部および前記ヘッダタンクの内周部の少なくとも一方に、同一方向に延びる複数の前記キャップ本体の中間線で区分けされる一半部側と他半部側のうち一半部側に偏るように設けられた間隔変化部とを備える熱交換器。 A plurality of heat exchangers formed so that a heat exchange fluid can flow therethrough;
A plurality of header tanks extending in parallel with each other and having an opening formed at an end thereof, and connected to a plurality of the heat exchange bodies so that the heat exchange fluid supplied to the inside sequentially flows; ,
A plurality of header tanks, each of which is disposed corresponding to the inside of the opening, and has an outer peripheral portion facing the inner peripheral portion of the header tank that forms the opening with a space therebetween; A heat exchanger cap having a plurality of cap bodies that seal the openings of the plurality of header tanks by being joined to the periphery, and a connecting portion that connects the plurality of cap bodies to each other;
A plurality of outer peripheral portions of the cap main body and an inner peripheral portion of the header tank are formed to be changed, and extend in the same direction on at least one of the outer peripheral portion of the cap main body and the inner peripheral portion of the header tank. A heat exchanger provided with the space | interval change part provided so that it may be biased to one half part side among the one half part side and the other half part side divided by the intermediate line of the said cap main body. 前記間隔変化部は、前記一半部側と前記他半部側のうち前記一半部側に数が偏るように設けられる請求項１に記載の熱交換器。   2. The heat exchanger according to claim 1, wherein the interval changing portion is provided so that the number thereof is biased toward the one half side of the one half side and the other half side. 複数の前記キャップ本体は、一列に配列され、
前記間隔変化部は、複数の前記キャップ本体の中心を結ぶように延びる前記中間線で区分けされた一半部側と他半部側のうち一半部側に偏るように設けられる請求項１または２に記載の熱交換器。 The cap bodies are arranged in a row,
The said space | interval change part is provided so that it may be biased to one half part side among the one half part side and the other half part side divided by the said intermediate line extended so that the center of the said some cap main body may be tied. The described heat exchanger. 前記間隔変化部は、前記ヘッダタンクの内周部に圧入するように前記キャップ本体の外周部から突出して設けられる請求項１〜３のいずれか一項に記載の熱交換器。   The said space | interval change part is a heat exchanger as described in any one of Claims 1-3 provided so that it may protrude from the outer peripheral part of the said cap main body so that it may press-fit in the inner peripheral part of the said header tank. 内部を熱交換流体が流通可能に形成された複数の熱交換体と、
互いに平行に延びると共に端部に開口部が形成された筒形状を有し、内部に供給される前記熱交換流体が順次流通するように複数の前記熱交換体に接続された複数のヘッダタンクと、
複数の前記ヘッダタンクの開口部の内側にそれぞれ対応して配置されると共に前記開口部を形成する前記ヘッダタンクの内周部に対向する外周部を有し且つ前記ヘッダタンクの内周部との間が接合されることにより複数の前記ヘッダタンクの開口部を密閉する複数のキャップ本体と、複数の前記キャップ本体を互いに連結する連結部とを有する熱交換器用キャップと、
前記熱交換器用キャップの両端に位置する２つの前記キャップ本体のうち一方の前記キャップ本体を前記ヘッダタンクに係合させる係合部とを備え、
前記係合部は、一方の前記キャップ本体の外周部から延出する係合延出部と、前記係合延出部に対応して前記ヘッダタンクを貫通するように設けられた係合受け部とを有し、前記係合延出部を前記係合受け部に挿入して一方の前記キャップ本体を前記ヘッダタンクに係合させる熱交換器。 A plurality of heat exchangers formed so that a heat exchange fluid can flow therethrough;
A plurality of header tanks extending in parallel with each other and having an opening formed at an end thereof, and connected to a plurality of the heat exchange bodies so that the heat exchange fluid supplied to the inside sequentially flows; ,
A plurality of header tanks, each of which is disposed corresponding to the inside of each of the opening portions of the header tank, and has an outer peripheral portion facing the inner peripheral portion of the header tank that forms the opening portion, and the inner peripheral portion of the header tank A heat exchanger cap having a plurality of cap bodies that seal the openings of the plurality of header tanks by being joined together, and a connecting portion that connects the plurality of cap bodies to each other;
An engagement part for engaging one of the two cap bodies located at both ends of the cap for the heat exchanger with the header tank ;
The engagement portion includes an engagement extension portion extending from an outer peripheral portion of one of the cap bodies, and an engagement receiving portion provided so as to penetrate the header tank corresponding to the engagement extension portion. A heat exchanger that inserts the engagement extension portion into the engagement receiving portion and engages one of the cap bodies with the header tank . 前記熱交換器用キャップは、両端に位置する２つの前記キャップ本体のうち他方の前記キャップ本体の外周部から延出する支持延出部を有し、
前記ヘッダタンクは、内周部を切欠いた切欠き部を有し、前記切欠き部に前記支持延出部が収容されることにより周方向に支持される請求項１〜５のいずれか一項に記載の熱交換器。 The cap for the heat exchanger has a support extension that extends from the outer periphery of the other cap body of the two cap bodies located at both ends,
The header tank, the inner peripheral portion has a switching-away cutout portion, any one of the preceding claims, wherein the support extension part in the notch is supported in the circumferential direction by being accommodated The heat exchanger as described in.
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