JP3855918B2 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
JP3855918B2
JP3855918B2 JP2002336281A JP2002336281A JP3855918B2 JP 3855918 B2 JP3855918 B2 JP 3855918B2 JP 2002336281 A JP2002336281 A JP 2002336281A JP 2002336281 A JP2002336281 A JP 2002336281A JP 3855918 B2 JP3855918 B2 JP 3855918B2
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Japan
Prior art keywords
pipe
fitting
heat exchanger
flange
connecting pipe
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JP2004163073A (en
Inventor
貢 中村
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Denso Corp
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Denso Corp
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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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、流体の入口または出口にフランジ付きパイプ口金を備えた熱交換器であって、自動車空調装置のヒータコアなどに使用される熱交換器に関するものである。
【０００２】
【従来の技術】
自動車空調装置のヒータコアなどに使用される熱交換器は、図１に示す如く、流体の入口または出口に、フランジ１１が付いたパイプ口金１を備える。このパイプ口金１には、鍔２１を有する接続管２の先端が差し込まれ、フランジ１１と鍔２１とを突き合わせて連結される。パイプ口金１と接続管２の連結方法には、フランジ１１と鍔２１とを鑞付けする、特殊な形状を有するクランプでネジ止めする、直接ネジ止めをする、フランジ１１を特殊な形状にし鍔２１にかしめる、などがある。
上記した連結方法のうち、鑞付け以外の方法では、図８に示す如く、シール手段としてＯリング２３を介装してパイプ口金１と接続管２を連結している（特許文献なし）。
【０００３】
【発明が解決しようとする課題】
近年、金属材料のリサイクルが進められる中、自動車空調装置の熱交換器に主として用いられるアルミニウム材料もリサイクルの要望が大きい。この点、上記の如く、口金パイプと接続管の連結部のシール手段として用いられるＯリングはゴム製であるため、リサイクルにおいて好ましくない。一方、シール手段として鑞付けを採用すると、リサイクルにおける問題はないが、連結部を加熱する必要がある。このため、接続管の形状によっては加熱炉に入れることができず、別途の手段で連結部を加熱する必要があり作業が煩雑になる。
【０００４】
【発明の目的】
本発明の目的は、自動車空調装置の熱交換器の口金パイプと接続管との連結部のシール手段として、Ｏリングの介装および鑞付けを止め、金属材料としてのリサイクル性の向上、かつ、Ｏリングの廃止によるコストダウン、または、連結部の加熱の省略に伴う製造工程の簡略化によるコストダウンを可能とする熱交換器の提供にある。
【０００５】
【課題を解決するための手段】
〔請求項１の手段〕
請求項１の発明によると、熱交換器のパイプ口金の内面と接続管の差し込み部分の外面とを接着剤で接合し、接続管の差し込み部分の外面に設けた嵌合凹部に、パイプ口金の内面対応部に設けた嵌合凸部を嵌合したことを特徴とする。それによって、接着剤がシール手段として作用し、従来のＯリングの介装、鑞付けを廃止することができコストダウンおよびリサイクル性の向上を達成できるとともに、接続管やパイプ口金に急激なトルク負荷などがかかっても、嵌合凹部と嵌合凸部の嵌合により接続管とパイプ口金の連結が強化され、硬化した接着剤における亀裂の発生を防止することができる。
【０００６】
〔請求項２の手段〕
請求項２の発明によると、熱交換器のパイプ口金の内面と接続管の差し込み部分の外面とを接着剤で接合し、接続管の差し込み部分の外面に設けた嵌合凸部を、パイプ口金の内面対応部に設けた嵌合凹部に嵌合したことを特徴とする。それによって、請求項１と同様の効果を得ることができる。
【０００７】
〔請求項３の手段〕
請求項３の発明によると、熱交換器のパイプ口金の内面と接続管の差し込み部分をテーパ形状とし互いに摺り合わせ、摺り合わせ部同士を接着剤で接合したことを特徴とする。それによって、接着剤の使用量をさらに減らすことができ、さらなるコストダウンが達成できる。
【０００８】
〔請求項４の手段〕
請求項４の発明によると、接続管に設けられた嵌合凹部または嵌合凸部が接続管の差し込み部分の外面の最下部に設けられ、パイプ口金の内面対応部に設けた嵌合凸部または嵌合凹部に嵌合したことを特徴とする。それにより、接続管の差し込み部分における嵌合凹部または嵌合凸部の製作加工が容易になる。
【００１０】
【発明の実施の形態】
〔比較例の構成〕
本発明の実施形態に対する比較例を図１および図２に示す。熱交換器１００は、熱交換部１０１の左右両端にタンク１０２、１０３を有する。熱交換部１０１は、上下方向に平行に配列された多数の偏平チューブ１０４と、その偏平チューブ１０４に接して配された多数のコルゲートフィン１０５とからなる。タンク１０２、１０３の上端には、それぞれフランジ１１を有するパイプ口金１が接合されている。
【００１１】
パイプ口金１は、平板で円環状のフランジ１１と、フランジ１１の内周から下方にテーパ状に延長され径小となる嵌合部１２と、嵌合部１２から下方に延長された径小部１３と、径小部１３から下方に展長されたテーパ部１４と、テーパ部１４から下方に延長された溶接部１５と、フランジ１１の外周から上方に円筒状に延長されたかしめ筒部１６とを備える。接続管２は、その下面がフランジ１１の上面と突き合わされる鍔２１と、鍔２１から先端に向かってテーパ状に径小となり、パイプ口金１への差し込み部分を構成するとともに、その外面が嵌合部１２の内面と摺り合わされる嵌合部２２とを備える。
【００１２】
〔比較例の作用および効果〕
このパイプ口金１の嵌合部１２に接続管２の嵌合部２２を差し込み、フランジ１１の上面と鍔２１の下面とを突き合わせるとともに、嵌合部１２の内面と嵌合部２２の外面とを摺り合わせる。この際、嵌合部１２の内面と嵌合部２２の外面とのいずれか一方に、予め接着剤を塗布しておく。
接着剤としては、アクリル系のものなどが使用されるが、できるだけ短時間で硬化し、硬化後の強度が十分であり、高温劣化、経時劣化せず、耐クーラント性のあるものが使用される。
【００１３】
パイプ口金１と接続管２とを連結する際、嵌合部１２と嵌合部２２とが摺り合わされ、予め塗布された接着剤が硬化して接合しシール機能を有するため、Ｏリングの介装や鑞付けを行う必要がなく、コストダウンを達成できる。また、接着剤の塗布量はＯリングの質量に比べ微量であるため、リサイクル性も向上できる。
【００１４】
〔第１実施形態の構成〕
本発明の第１実施形態を図３ないし図５に示す。第１実施形態では、図３または図４に示すごとく、パイプ口金１と接続管２との連結を強化するため、パイプ口金１に嵌合凸部１２ｂ、１２ｂを設け、接続管２に嵌合凹部２２ａ、２２ａを設けている。嵌合凹部２２ａ、２２ａは、接続管２の嵌合部２２の外面の最上部に直径方向にほぼ対称となる位置に２つ設けられている。一方、嵌合凸部１２ｂ、１２ｂは、パイプ口金１の内面対応部に設けられている。
【００１５】
内面対応部とは、パイプ口金１の嵌合部１２の内面であり、パイプ口金１の嵌合部１２に接続管２の嵌合部２２を差し込み、フランジ１１の上面と鍔２１の下面とを突き合わせた際に、嵌合部２２の外面に設けられた嵌合凹部２２ａまたは後述する嵌合凸部２２ｂが嵌まり込み、嵌合部１２の内面と嵌合部２２の外面とを摺り合わせることができる位置のことである。
【００１６】
〔第１実施形態の作用および効果〕
このパイプ口金１の嵌合部１２に接続管２の嵌合部２２を差し込み、フランジ１１の上面と鍔２１の下面とを突き合わせ、嵌合凹部２２ａ、２２ａに嵌合凸部１２ｂ、１２ｂを嵌合させ、嵌合部１２の内面と嵌合部２２の外面とを摺り合わせる。この際、嵌合部１２の内面と嵌合部２２の外面とのいずれか一方に、予め接着剤を塗布しておく。
【００１７】
これにより、比較例と同様の効果が得られるとともに、嵌合凸部１２ｂ、１２ｂと嵌合凹部２２ａ、２２ａの嵌合によりパイプ口金１と接続管２との連結が強化され、急激なトルク負荷などにより硬化した接着剤の亀裂が発生することを防止することができる。なお、第１実施形態では、接着剤が硬化したのち図５に示すごとく、かしめ筒部１６を４箇所でかしめ、さらにパイプ口金１と接続管２との連結が強化されている。
【００１８】
〔第２実施形態の構成〕
本発明の第２実施形態を図６に示す。第２実施形態では、図６に示すごとく、パイプ口金１と接続管２との連結を強化するため、パイプ口金１に嵌合凹部１２ａが、接続管２に嵌合凸部２２ｂが設けられている。嵌合凸部２２ｂは、接続管２の嵌合部２２の外面の最上部に１つ設けられている。一方、嵌合凹部１２ａは、パイプ口金１の内面対応部に設けられている。
【００１９】
〔第２実施形態の作用および効果〕
このパイプ口金１の嵌合部１２に接続管２の嵌合部２２を差し込み、フランジ１１の上面と鍔２１の下面とを突き合わせ、嵌合凸部２２ｂを嵌合凹部１２ａに嵌合させ、嵌合部１２の内面と嵌合部２２の外面とを摺り合わせる。この際、嵌合部１２の内面と嵌合部２２の外面とのいずれか一方に、予め接着剤を塗布しておく。
これにより、第１実施形態と同様の効果が得られる。なお、第２実施形態でも、接着剤が硬化したのち、かしめ筒部１６を４箇所でかしめ、パイプ口金１と接続管２との連結が強化されている。
【００２０】
〔第３実施形態の構成〕
本発明の第３実施形態を図７に示す。第３実施形態にかかる接続管２では、嵌合部２２の外面の最下部に嵌合凹部２２ａが、１つ設けられている。一方、パイプ口金１に設けられる嵌合凸部１２ｂは、嵌合部１２の内面対応部に設けられている。
【００２１】
〔第３実施形態の作用および効果〕
このパイプ口金１の嵌合部１２に接続管２の嵌合部２２を差し込み、フランジ１１の上面と鍔２１の下面とを突き合わせ、嵌合凹部２２ａに嵌合凸部１２ｂを嵌合させ、嵌合部１２の内面と嵌合部２２の外面とを摺り合わせる。この際、嵌合部１２の内面と嵌合部２２の外面とのいずれか一方に、予め接着剤を塗布しておく。
【００２２】
これにより、第１実施形態または第２実施形態と同様の効果が得られる。また、嵌合凹部２２ａは嵌合部２２の最下部に位置するため、嵌合凹部２２ａの製作加工が極めて容易にできる。なお、第３実施形態でも、接着剤が硬化したのち、かしめ筒部１６を４箇所でかしめ、パイプ口金１と接続管２との連結が強化されている。
【００２３】
〔他の実施形態〕
第１実施形態ないしは第３実施形態ではかしめ筒部１６をかしめていたが、必ずしもかしめる必要はない。また、嵌合凹部１２ａ、２２ａおよび嵌合凸部１２ｂ、２２ｂは１つまたは２つしか設けられていなかったが、３つ以上設けてもよい。さらに嵌合凹部２２ａおよび嵌合凸部２２ｂの位置は接続管２の嵌合部２２の外面の最下部または最上部に限られるものではなく、最下部と最上部の間で任意の位置を選ぶことができる。これに応じて、パイプ口金１の嵌合部１２の内面対応部に設けられる嵌合凹部１２ａおよび嵌合凸部１２ｂの位置も、変更可能である。
【図面の簡単な説明】
【図１】 比較例における熱交換器、パイプ口金と接続管との連結を示す全体図である。
【図２】 比較例におけるパイプ口金と接続管との連結を示す断面図（ａ）とその要部拡大図（ｂ）である。
【図３】 第１実施形態における接続管の断面図および下面図である。
【図４】 第１実施形態におけるパイプ口金の平面図および断面図である。
【図５】 第１実施形態におけるパイプ口金と接続管の連結を示す平面図および断面図である。
【図６】 第２実施形態におけるパイプ口金と接続管の連結を示す平面図および断面図である。
【図７】 第３実施形態におけるパイプ口金と接続管の連結を示す平面図および断面図である。
【図８】 従来のパイプ口金と接続管の連結を示す断面図である。
【符号の説明】
１ パイプ口金
１１ フランジ
１２ 嵌合部
１２ａ 嵌合凹部
１２ｂ 嵌合凸部
２ 接続管
２１ 鍔
２２ 嵌合部
２２ａ 嵌合凹部
２２ｂ 嵌合凸部
１００ 熱交換器[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat exchanger provided with a flanged pipe cap at the inlet or outlet of a fluid, and relates to a heat exchanger used for a heater core of an automobile air conditioner or the like.
[0002]
[Prior art]
As shown in FIG. 1, a heat exchanger used for a heater core of an automobile air conditioner includes a pipe base 1 with a flange 11 at a fluid inlet or outlet. A tip of a connecting pipe 2 having a flange 21 is inserted into the pipe base 1, and the flange 11 and the flange 21 are abutted and connected. For connecting the pipe cap 1 and the connecting pipe 2, the flange 11 and the flange 21 are brazed, screwed with a clamp having a special shape, directly screwed, the flange 11 is made into a special shape, and the flange 21 Squeezing.
Among the connection methods described above, in methods other than brazing, as shown in FIG. 8, the pipe cap 1 and the connection pipe 2 are connected via an O-ring 23 as sealing means (no patent document).
[0003]
[Problems to be solved by the invention]
In recent years, as metal materials are being recycled, there is a great demand for recycling aluminum materials mainly used for heat exchangers of automobile air conditioners. In this respect, as described above, the O-ring used as a sealing means for the connection portion between the cap pipe and the connecting pipe is made of rubber, and thus is not preferable in recycling. On the other hand, when brazing is adopted as the sealing means, there is no problem in recycling, but the connecting portion needs to be heated. For this reason, depending on the shape of the connecting pipe, it cannot be put into the heating furnace, and it is necessary to heat the connecting portion by a separate means, and the work becomes complicated.
[0004]
OBJECT OF THE INVENTION
The object of the present invention is to stop the interposing and brazing of the O-ring as a sealing means for the connection portion between the cap pipe and the connecting pipe of the heat exchanger of the automobile air conditioner, to improve the recyclability as a metal material, and An object of the present invention is to provide a heat exchanger that can reduce the cost by eliminating the O-ring or simplifying the manufacturing process when the heating of the connecting portion is omitted.
[0005]
[Means for Solving the Problems]
[Means of Claim 1]
According to the first aspect of the present invention, the inner surface of the pipe cap of the heat exchanger and the outer surface of the insertion portion of the connection pipe are joined with an adhesive, and the fitting recess provided on the outer surface of the insertion portion of the connection pipe is connected to the pipe cap. The fitting convex part provided in the inner surface corresponding part was fitted . As a result, the adhesive acts as a sealing means, eliminating conventional O-ring intervention and brazing, reducing costs and improving recyclability, and abrupt torque load on the connection pipe and pipe cap. Even if it is applied, the connection between the connecting pipe and the pipe cap is strengthened by the fitting of the fitting concave portion and the fitting convex portion, and the occurrence of cracks in the cured adhesive can be prevented .
[0006]
[Means of claim 2]
According to the invention of claim 2, the inner surface of the pipe cap of the heat exchanger and the outer surface of the insertion portion of the connection pipe are joined with an adhesive, and the fitting convex portion provided on the outer surface of the insertion portion of the connection pipe is characterized in that fitted into the fitting recess formed on the inner surface corresponding portion of. Thereby, the same effect as that of the first aspect can be obtained.
[0007]
[Means of claim 3]
The invention according to claim 3 is characterized in that the inner surface of the pipe cap of the heat exchanger and the insertion portion of the connecting pipe are tapered and rubbed together, and the rubbed portions are joined together with an adhesive . Thereby, the amount of adhesive used can be further reduced, and further cost reduction can be achieved .
[0008]
[Means of claim 4]
According to invention of Claim 4, the fitting recessed part or fitting convex part provided in the connecting pipe was provided in the lowest part of the outer surface of the insertion part of a connecting pipe, and the fitting convex part provided in the inner surface corresponding part of a pipe cap or it is characterized in that fitted into the mating recess. Thereby, the manufacturing process of the fitting recessed part or the fitting convex part in the insertion part of a connection pipe becomes easy .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
[Configuration of Comparative Example ]
A comparative example for the embodiment of the present invention is shown in FIGS. The heat exchanger 100 includes tanks 102 and 103 at both left and right ends of the heat exchange unit 101. The heat exchange unit 101 includes a number of flat tubes 104 arranged in parallel in the vertical direction and a number of corrugated fins 105 disposed in contact with the flat tubes 104. Pipe caps 1 each having a flange 11 are joined to the upper ends of the tanks 102 and 103.
[0011]
The pipe cap 1 includes a flat and annular flange 11, a fitting portion 12 that is tapered downward from the inner periphery of the flange 11 and has a small diameter, and a small diameter portion that extends downward from the fitting portion 12. 13, a tapered portion 14 extended downward from the small-diameter portion 13, a welded portion 15 extended downward from the tapered portion 14, and a crimped tube portion 16 extended cylindrically upward from the outer periphery of the flange 11. With. The connecting pipe 2 has a flange 21 whose lower surface is abutted with the upper surface of the flange 11, and has a tapered diameter from the flange 21 toward the tip, forming an insertion portion into the pipe cap 1, and its outer surface is fitted. A fitting portion 22 that is rubbed against the inner surface of the joint portion 12 is provided.
[0012]
[Operation and effect of comparative example ]
The fitting portion 22 of the connecting pipe 2 is inserted into the fitting portion 12 of the pipe base 1, the upper surface of the flange 11 and the lower surface of the flange 21 are abutted, and the inner surface of the fitting portion 12 and the outer surface of the fitting portion 22 are Rub together. At this time, an adhesive is applied in advance to either the inner surface of the fitting portion 12 or the outer surface of the fitting portion 22.
Adhesives such as acrylic are used as adhesives, but they are cured in as short a time as possible, have sufficient strength after curing, do not deteriorate at high temperatures and do not deteriorate with time, and are resistant to coolant. .
[0013]
When the pipe cap 1 and the connecting pipe 2 are connected, the fitting portion 12 and the fitting portion 22 are slid together, the adhesive applied in advance is cured and joined, and has a sealing function. Cost reduction can be achieved without the need for brazing or brazing. In addition, since the amount of adhesive applied is very small compared to the mass of the O-ring, recyclability can also be improved.
[0014]
[Configuration of First Embodiment]
A first embodiment of the present invention is shown in FIGS. In the first embodiment, as shown in FIG. 3 or FIG. 4, fitting protrusions 12 b and 12 b are provided on the pipe base 1 to strengthen the connection between the pipe base 1 and the connection pipe 2, and the connection pipe 2 is fitted. Recesses 22a and 22a are provided. Two fitting recesses 22a and 22a are provided at positions on the outermost surface of the fitting portion 22 of the connecting pipe 2 that are substantially symmetrical in the diameter direction. On the other hand, the fitting convex portions 12 b and 12 b are provided on the inner surface corresponding portion of the pipe cap 1.
[0015]
The inner surface corresponding portion is the inner surface of the fitting portion 12 of the pipe base 1, and the fitting portion 22 of the connecting pipe 2 is inserted into the fitting portion 12 of the pipe base 1, and the upper surface of the flange 11 and the lower surface of the flange 21 are connected. At the time of abutment, a fitting recess 22a provided on the outer surface of the fitting portion 22 or a fitting convex portion 22b described later is fitted, and the inner surface of the fitting portion 12 and the outer surface of the fitting portion 22 are slid together. It is a position where you can.
[0016]
[Operation and Effect of First Embodiment]
The fitting portion 22 of the connecting pipe 2 is inserted into the fitting portion 12 of the pipe cap 1, the upper surface of the flange 11 and the lower surface of the flange 21 are abutted, and the fitting convex portions 12b and 12b are fitted into the fitting concave portions 22a and 22a. The inner surface of the fitting portion 12 and the outer surface of the fitting portion 22 are slid together. At this time, an adhesive is applied in advance to either the inner surface of the fitting portion 12 or the outer surface of the fitting portion 22.
[0017]
As a result, the same effects as those of the comparative example can be obtained, and the coupling between the pipe cap 1 and the connecting pipe 2 is strengthened by the fitting of the fitting convex portions 12b and 12b and the fitting concave portions 22a and 22a, and a sudden torque load is achieved. It is possible to prevent cracking of the cured adhesive due to the above. In the first embodiment, after the adhesive is cured, as shown in FIG. 5, the caulking tube portion 16 is caulked at four locations, and the connection between the pipe cap 1 and the connecting pipe 2 is strengthened.
[0018]
[Configuration of Second Embodiment]
A second embodiment of the present invention is shown in FIG. In the second embodiment, as shown in FIG. 6, the fitting recess 12 a is provided in the pipe cap 1 and the fitting projection 22 b is provided in the connection tube 2 in order to strengthen the connection between the pipe cap 1 and the connection tube 2. Yes. One fitting convex portion 22 b is provided on the uppermost portion of the outer surface of the fitting portion 22 of the connecting pipe 2. On the other hand, the fitting recess 12 a is provided in the inner surface corresponding part of the pipe cap 1.
[0019]
[Operation and Effect of Second Embodiment]
The fitting portion 22 of the connecting pipe 2 is inserted into the fitting portion 12 of the pipe base 1, the upper surface of the flange 11 and the lower surface of the flange 21 are butted, the fitting convex portion 22b is fitted into the fitting concave portion 12a, and the fitting is performed. The inner surface of the joint portion 12 and the outer surface of the fitting portion 22 are slid together. At this time, an adhesive is applied in advance to either the inner surface of the fitting portion 12 or the outer surface of the fitting portion 22.
Thereby, the effect similar to 1st Embodiment is acquired. Also in the second embodiment, after the adhesive is cured, the caulking tube portion 16 is caulked at four locations, and the connection between the pipe cap 1 and the connecting pipe 2 is strengthened.
[0020]
[Configuration of Third Embodiment]
A third embodiment of the present invention is shown in FIG. In the connecting pipe 2 according to the third embodiment, one fitting recess 22 a is provided at the lowermost portion of the outer surface of the fitting portion 22. On the other hand, the fitting convex portion 12 b provided on the pipe cap 1 is provided on the inner surface corresponding portion of the fitting portion 12.
[0021]
[Operation and Effect of Third Embodiment]
The fitting portion 22 of the connecting pipe 2 is inserted into the fitting portion 12 of the pipe cap 1, the upper surface of the flange 11 and the lower surface of the flange 21 are abutted, the fitting convex portion 12b is fitted into the fitting concave portion 22a, and the fitting is performed. The inner surface of the joint portion 12 and the outer surface of the fitting portion 22 are slid together. At this time, an adhesive is applied in advance to either the inner surface of the fitting portion 12 or the outer surface of the fitting portion 22.
[0022]
Thereby, the effect similar to 1st Embodiment or 2nd Embodiment is acquired. Further, since the fitting recess 22a is located at the lowermost part of the fitting portion 22, the manufacturing process of the fitting recess 22a can be very easily performed. Also in the third embodiment, after the adhesive is cured, the caulking tube portion 16 is caulked at four locations, and the connection between the pipe cap 1 and the connecting pipe 2 is strengthened.
[0023]
Other Embodiment
In the first or third embodiment, the caulking tube portion 16 is caulked, but it is not always necessary to caulk. Further, although only one or two fitting recesses 12a and 22a and fitting projections 12b and 22b are provided, three or more fitting recesses 12a and 22a and two fitting protrusions 12b and 22b may be provided. Furthermore, the positions of the fitting recess 22a and the fitting projection 22b are not limited to the lowermost or uppermost part of the outer surface of the fitting part 22 of the connecting pipe 2, and an arbitrary position is selected between the lowermost part and the uppermost part. be able to. Correspondingly, the positions of the fitting recess 12a and the fitting projection 12b provided in the inner surface corresponding portion of the fitting portion 12 of the pipe cap 1 can be changed.
[Brief description of the drawings]
FIG. 1 is an overall view showing a connection between a heat exchanger, a pipe cap and a connecting pipe in a comparative example .
FIG. 2 is a cross-sectional view (a) showing a connection between a pipe cap and a connecting pipe in a comparative example, and an enlarged view (b) thereof.
FIGS. 3A and 3B are a cross-sectional view and a bottom view of a connection pipe in the first embodiment. FIGS.
FIGS. 4A and 4B are a plan view and a cross-sectional view of a pipe cap in the first embodiment. FIGS.
FIGS. 5A and 5B are a plan view and a cross-sectional view showing a connection between a pipe cap and a connecting pipe in the first embodiment. FIGS.
FIGS. 6A and 6B are a plan view and a cross-sectional view showing a connection between a pipe cap and a connecting pipe in a second embodiment. FIGS.
FIGS. 7A and 7B are a plan view and a cross-sectional view showing a connection between a pipe cap and a connecting pipe in a third embodiment. FIGS.
FIG. 8 is a cross-sectional view showing the connection between a conventional pipe cap and a connecting pipe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pipe cap 11 Flange 12 Fitting part 12a Fitting recessed part 12b Fitting convex part 2 Connecting pipe 21 鍔 22 Fitting part 22a Fitting concave part 22b Fitting convex part 100 Heat exchanger

Claims (4)

外周に筒部を有するフランジの付いたパイプ口金を、流体の入口または出口に備え、該パイプ口金に鍔を有する接続管を差し込み、前記接続管を連結した熱交換器において、
前記パイプ口金の内面と前記接続管の差し込み部分の外面とを接着剤で接合し、
前記接続管の差し込み部分の外面に設けた嵌合凹部に、前記パイプ口金の内面対応部に設けた嵌合凸部を嵌合したことを特徴とする熱交換器。In a heat exchanger provided with a pipe base with a flange having a cylindrical part on the outer periphery at the inlet or outlet of the fluid, inserting a connecting pipe having a flange into the pipe base, and connecting the connecting pipes,
Bonding the inner surface of the pipe base and the outer surface of the insertion portion of the connecting pipe with an adhesive ,
A heat exchanger , wherein a fitting convex portion provided at an inner surface corresponding portion of the pipe base is fitted into a fitting concave portion provided on an outer surface of an insertion portion of the connection pipe . 外周に筒部を有するフランジの付いたパイプ口金を、流体の入口または出口に備え、該パイプ口金に鍔を有する接続管を差し込み、前記接続管を連結した熱交換器において、
前記パイプ口金の内面と前記接続管の差し込み部分の外面とを接着剤で接合し、
前記接続管の差し込み部分の外面に設けた嵌合凸部を、前記パイプ口金の内面対応部に設けた嵌合凹部に嵌合したことを特徴とする熱交換器。 In a heat exchanger provided with a pipe base with a flange having a cylindrical part on the outer periphery at the inlet or outlet of the fluid, inserting a connecting pipe having a flange into the pipe base, and connecting the connecting pipes,
Bonding the inner surface of the pipe base and the outer surface of the insertion portion of the connecting pipe with an adhesive,
Heat exchanger, characterized in that the fitting convex portion provided on the outer surface of the insertion portion of the connecting pipe, and fitted into the fitting recess formed on the inner surface corresponding portion of the pipe mouth. 請求項１または請求項２に記載の熱交換器において、前記パイプ口金の内面と前記接続管の差し込み部分をテーパ形状とし互いに摺り合わせ、該摺り合わせ部同士を接着剤で接合したことを特徴とする熱交換器。The heat exchanger according to claim 1 or 2, characterized in that the inner surface of the pipe base and the insertion portion of the connecting pipe are tapered and slid together, and the slidable parts are joined with an adhesive. Heat exchanger. 請求項１または請求項２に記載の熱交換器において、前記接続管に設けられた前記嵌合凹部または前記嵌合凸部が、前記接続管の差し込み部分の外面の最下部に設けられ、前記パイプ口金の内面対応部に設けた前記嵌合凸部または前記嵌合凹部に嵌合したことを特徴とする熱交換器。 The heat exchanger according to claim 1 or 2, wherein the fitting concave portion or the fitting convex portion provided in the connection pipe is provided at a lowermost portion of an outer surface of an insertion portion of the connection pipe, heat exchanger, characterized in that fitted into the fitting projection or the engaging recess provided on the inner surface corresponding portion of the pipe die.
JP2002336281A 2002-09-20 2002-11-20 Heat exchanger Expired - Fee Related JP3855918B2 (en)

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