JP2005083647A - Core structure of heat exchanger - Google Patents

Core structure of heat exchanger Download PDF

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JP2005083647A
JP2005083647A JP2003315863A JP2003315863A JP2005083647A JP 2005083647 A JP2005083647 A JP 2005083647A JP 2003315863 A JP2003315863 A JP 2003315863A JP 2003315863 A JP2003315863 A JP 2003315863A JP 2005083647 A JP2005083647 A JP 2005083647A
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heat exchanger
reinforcement
tanks
core
tube
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Mitsuru Iwasaki
充 岩崎
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Marelli Corp
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Calsonic Kansei 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
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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

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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)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core structure of a heat exchanger capable of reducing thermal stress acting on a root part of a tube adjacently arranged to reinforces, while reducing manufacturing cost, in the heat exchanger having a structure for constituting both upper and lower tanks of a cylindrical body and side patches for blocking-up by being pressed in both end opening parts of the cylindrical body. <P>SOLUTION: This heat exchanger is constituted so that upper and lower both end parts of the reinforces 5 and 6 are integrally formed with the side patches 12 and 22 for constituting a part of the tanks 1 and 2, and a connecting part of the side patches 12 and 22 and the reinforces 5 and 6, is composed of a plate inclined part 71 inclined inward to the reinforces 5 and 6 to a vertical surface, and can be deformed in the shaft direction with the inclined part 71 as the center. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、熱交換器のコア部構造に関し、特に、上下方向において対向配置される上下両タンクの両端部をレインフォースで連結した構造の熱交換器のコア部構造に関する。   The present invention relates to a core structure of a heat exchanger, and more particularly to a core structure of a heat exchanger having a structure in which both ends of both upper and lower tanks arranged opposite to each other in the vertical direction are connected by a reinforcement.

従来のこの種の熱交換器のコア部構造は、チューブおよびレインフォースの上下両端部が座板（上下両タンクの底部）に形成されるチューブ穴およびレインフォース穴に挿入され、この状態で座板、チューブ、フィンおよびレインフォースが相互に熱処理炉内でろう付けされることにより連結固定されている（例えば、特許文献１参照。）・・従来例１。   In the conventional core structure of this type of heat exchanger, the upper and lower ends of the tube and the reinforcement are inserted into the tube hole and the reinforcement hole formed in the seat plate (the bottom of the upper and lower tanks). The plate, the tube, the fin and the reinforcement are connected and fixed to each other by brazing in a heat treatment furnace (for example, refer to Patent Document 1).

ところが、このような熱交換器のコア部構造では、レインフォースの端部を座板のレインフォース穴に嵌装してろう付けにより座板に固定しているため、レインフォースの端部がろう付けされるレインフォース穴の近傍の座板の剛性が高まり、これにより、レインフォースに隣接して配置されるチューブの付け根部に亀裂が発生したり、レインフォースに歪みや亀裂変形を発生させる虞があるという問題があった。   However, in such a heat exchanger core structure, since the end of the reinforcement is fitted into the reinforcement hole of the seat plate and fixed to the seat plate by brazing, the end of the reinforcement is brazed. The rigidity of the seat plate in the vicinity of the reinforcement hole to be attached increases, which may cause cracks at the base of the tube placed adjacent to the reinforcement, or cause distortion or crack deformation in the reinforcement. There was a problem that there was.

即ち、例えば、ラジエータでは、冷水が流通しているチューブに急激に温水が流入する場合があり、このような場合には、チューブが急激に高温になり大きく熱膨張しようとするが、レインフォースの端部がろう付けされるレインフォース穴の近傍の座板の剛性が高く、また、レインフォースの温度が殆ど変化しないため、熱膨張差によりレインフォースに隣接して配置されるチューブの付け根部分に亀裂が発生したり、レインフォースを変形させる虞がある。   That is, for example, in a radiator, hot water may suddenly flow into a tube through which cold water circulates. In such a case, the tube suddenly gets hot and tends to expand greatly, The rigidity of the seat plate near the reinforcement hole where the end is brazed is high, and the temperature of the reinforcement hardly changes, so the difference in thermal expansion causes the root of the tube located adjacent to the reinforcement. There is a risk of cracks and deformation of the reinforcement.

そこで、このような問題の解決策として、前記レインフォースの端部の近傍に、肉抜き穴を形成して、レインフォースの端部の剛性を低減させることにより、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力を低減させるようにしたものがある（例えば、特許文献２参照。）・・従来例２。   Therefore, as a solution to such a problem, a hole is formed in the vicinity of the end portion of the reinforcement to reduce the rigidity of the end portion of the reinforcement, so that it is arranged adjacent to the reinforcement. There is one in which the thermal stress acting on the root portion of the tube is reduced (see, for example, Patent Document 2).

特開昭５６−１８５８９号公報 （明細書（１）頁、図３）JP 56-18589 A (page (1) of the specification, FIG. 3) 特開平１１−１４２８５号公報 （明細書（２）頁、図２、４）JP 11-14285 A (page (2) of the specification, FIGS. 2, 4)

しかしながら、従来例２にあっては、レインフォースを嵌挿固定するためのレインフォース穴の追加によりタンクに対する穴加工が多くなると共に、レインフォースはタンク構成部品とは独立形成されたものであるため部品点数が多くなり、このため、ろう付け作業前の仮止め作業に多くの手間と労力を必要とし、従って、製造コストが高くつくという問題点があった。   However, in the conventional example 2, the addition of the reinforcement hole for inserting and fixing the reinforcement increases the number of holes in the tank, and the reinforcement is formed independently of the tank components. The number of parts increases, and therefore, there is a problem that a lot of labor and labor are required for the temporary fixing work before the brazing work, and the manufacturing cost is high.

本発明の解決しようとする課題は、上下両タンクが筒状本体と該筒状本体の両端開口部内に圧入して閉塞するサイドパッチとで構成された構造の熱交換器において、製造コストの低減化を図りつつ、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力を低減させ、これにより、チューブとレインフォースとの熱膨張差によりレインフォースに隣接して配置されるチューブの付け根部分に亀裂を発生させたり、レインフォースの本体部分に歪みや亀裂変形を発生させることを防止することができる熱交換器のコア部構造を提供することにある。   The problem to be solved by the present invention is to reduce the manufacturing cost in a heat exchanger having a structure in which both upper and lower tanks are constituted by a cylindrical main body and side patches that are press-fitted into both end openings of the cylindrical main body and closed. While reducing the thermal stress acting on the root of the tube placed adjacent to the reinforcement, the tube placed adjacent to the reinforcement due to the difference in thermal expansion between the tube and the reinforcement. It is an object of the present invention to provide a core structure of a heat exchanger that can prevent cracks from occurring at the base portion of the steel and prevent distortion and crack deformation from occurring at the main body portion of the reinforcement.

上記課題を解決するため請求項１記載の熱交換器のコア部構造は、上下に所定間隔を置いて対向配置される金属製の上下両タンクの間に該上下両タンク内を連通するチューブとフィンが交互に接触配置され、該チューブとフィンがその左右両側面において前記上下両タンクの左右両端部分に固定された金属製の左右両レインフォース相互間に挟持された状態で固定され、前記上下両タンクが筒状本体と該筒状本体の両端開口部内に圧入して閉塞するサイドパッチとで構成された構造の熱交換器において、前記左右両レインフォースの少なくとも一方の上下両端部が前記タンクの対応するサイドパッチと一体的に形成され、該サイドパッチと前記レインフォースとの間に該レインフォースの長手方向の熱衝撃に対する応力を吸収可能な形状の熱応力吸収部が一体に形成されていることを特徴とする手段とした。   In order to solve the above-mentioned problems, the core part structure of the heat exchanger according to claim 1 includes a tube communicating between the upper and lower tanks between the upper and lower metal tanks opposed to each other with a predetermined interval therebetween. The fins are alternately placed in contact, and the tube and the fin are fixed in a state of being sandwiched between metal left and right reinforcements fixed to the left and right end portions of the upper and lower tanks on the left and right side surfaces, In the heat exchanger having a structure in which both tanks are constituted by a cylindrical main body and side patches that are press-fitted into both end openings of the cylindrical main body and closed, at least one of the upper and lower ends of the left and right reinforcements is the tank. The heat of the shape is formed integrally with the corresponding side patch, and can absorb the stress against the thermal shock in the longitudinal direction of the reinforcement between the side patch and the reinforcement. Force absorbing portion is a means which is characterized in that it is formed integrally.

請求項２記載の熱交換器のコア部構造は、請求項１に記載の熱交換器のコア部構造において、前記熱応力吸収部が、前記サイドパッチとレインフォースとのつなぎ部分を垂直面に対し車幅方向に傾斜させた傾斜部で構成されていることを特徴とする手段とした。   The core part structure of the heat exchanger according to claim 2 is the core part structure of the heat exchanger according to claim 1, wherein the thermal stress absorbing part has a connecting portion between the side patch and the reinforcement in a vertical plane. It is a means characterized by comprising an inclined part inclined in the vehicle width direction.

請求項３記載の熱交換器のコア部構造は、請求項１に記載の熱交換器のコア部構造において、前記熱応力吸収部が、前記サイドパッチとレインフォースとのつなぎ部分を車幅方向に湾曲させた湾曲部で構成されていることを特徴とする手段とした。   The core part structure of the heat exchanger according to claim 3 is the core part structure of the heat exchanger according to claim 1, wherein the thermal stress absorbing part connects a connecting part between the side patch and the reinforcement in a vehicle width direction. It is comprised by the curved part curved in the direction.

請求項４記載の熱交換器のコア部構造は、請求項１〜３のいずれか１項に記載の熱交換器のコア部構造において、前記上下両タンクにおける筒状本体が一枚の板を筒状に形成してその両端縁部を内側に折り込んで該折り込み部を互いに結合するように構成され、前記サイドパッチには前記筒状本体の開口部内に圧入させた際に前記折り込み部が嵌合するスリットが形成されていることを特徴とする手段とした。   The core part structure of the heat exchanger according to claim 4 is the core part structure of the heat exchanger according to any one of claims 1 to 3, wherein the cylindrical main body of the upper and lower tanks is a single plate. It is configured to be formed into a cylindrical shape and its both edge portions are folded inward to join the folded portions to each other, and when the side patch is press-fitted into the opening of the cylindrical body, the folded portion is fitted A slit is formed, and the means is characterized.

請求項１記載の熱交換器のコア部構造では、上述のように、左右両レインフォースの少なくとも一方の上下両端部が前記タンクの対応するサイドパッチと一体的に形成されることで、部品点数の減少により、ろう付け作業前の仮止め作業が簡略化されると共に、レインフォースを挿通固定するためのレインフォース穴の加工が不要になるため、製造コストの低減化が可能になる。   In the core part structure of the heat exchanger according to claim 1, as described above, the upper and lower ends of at least one of the left and right reinforcements are integrally formed with the corresponding side patch of the tank, so that the number of parts is increased. As a result, the temporary fixing work before the brazing work is simplified, and it is not necessary to process a reinforcement hole for inserting and fixing the reinforcement, so that the manufacturing cost can be reduced.

また、サイドパッチとレインフォースとの間に該レインフォースの長手方向の熱衝撃に対する応力を吸収可能な形状の熱応力吸収部が一体に形成された構成とすることにより、冷水が流通しているチューブにタンクから急激に温水が流入する際に、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力を低減させることができるようになる。
従って、チューブとレインフォースとの熱膨張差によりレインフォースに隣接して配置されるチューブの付け根部分に亀裂を発生させたり、レインフォースの本体部分に歪みや亀裂変形を発生させることを防止できるようになる。 Further, cold water is circulated by adopting a structure in which a thermal stress absorbing portion having a shape capable of absorbing stress against thermal shock in the longitudinal direction of the reinforcement is integrally formed between the side patch and the reinforcement. When hot water suddenly flows into the tube from the tank, it is possible to reduce the thermal stress acting on the root portion of the tube disposed adjacent to the reinforcement.
Therefore, it is possible to prevent cracks from occurring at the base portion of the tube disposed adjacent to the reinforcement due to the difference in thermal expansion between the tube and the reinforcement, and distortion or crack deformation to occur in the reinforcement main body. become.

また、レインフォースの支持点がタンクの開口端部となるため、レインフォースにより剛性が高められる部分（支持点）がチューブの付け根部分から最も離れた位置となるため、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力の低減効果をさらに高めることができるようになる。   In addition, because the reinforcement support point is the open end of the tank, the portion where the rigidity is enhanced (support point) is the farthest from the tube root, so it is placed adjacent to the reinforcement. It becomes possible to further enhance the effect of reducing the thermal stress acting on the root portion of the tube.

請求項２記載の熱交換器のコア部構造では、前記熱応力吸収部が、サイドパッチとレインフォースとのつなぎ部分を垂直面に対し車幅方向に傾斜させた傾斜部で構成されることにより、該傾斜部を中心として軸方向に変形することで、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力を低減させることができるようになる。   In the core part structure of the heat exchanger according to claim 2, the thermal stress absorbing part is configured by an inclined part in which a connecting part between a side patch and a reinforcement is inclined in a vehicle width direction with respect to a vertical plane. By deforming in the axial direction around the inclined portion, it is possible to reduce the thermal stress acting on the root portion of the tube disposed adjacent to the reinforcement.

請求項３記載の熱交換器のコア部構造では、前記熱応力吸収部が、前記サイドパッチとレインフォースとのつなぎ部分を車幅方向に湾曲させた湾曲部で構成されることにより、該湾曲部が軸方向に変形することで、レインフォースに隣接して配置されるチューブの付け根部分に作用する熱応力を低減させることができるようになる。   In the core part structure of the heat exchanger according to claim 3, the thermal stress absorbing part is configured by a curved part obtained by curving a connecting part between the side patch and the reinforcement in a vehicle width direction. By deforming the portion in the axial direction, it is possible to reduce the thermal stress acting on the root portion of the tube disposed adjacent to the reinforcement.

請求項４記載の熱交換器のコア部構造では、前記上下両タンクにおける筒状本体が一枚の板を筒状に形成してその両端縁部を内側に折り込んで該折り込み部を互いに結合するように構成され、サイドパッチには筒状本体の開口部内に圧入させた際に折り込み部が嵌合するスリットが形成されている構成としたことで、筒状本体の開口部にサイドパッチ部を圧入することにより、筒状本体の両端縁部を密着させた状態にすることができるため、ろう付け作業前の仮止め作業において、筒状本体の両端縁部が開かないように仮止めする治具および仮止め作業が不要になる。
従って、製造コストを低減化できるようになる。 In the core part structure of the heat exchanger according to claim 4, the cylindrical main body in the upper and lower tanks forms a single plate into a cylindrical shape, and both ends of the cylindrical body are folded inward to join the folded portions to each other. The side patch is formed with a slit that fits into the folded portion when the side patch is press-fitted into the opening of the cylindrical main body, so that the side patch portion is formed in the opening of the cylindrical main body. By press-fitting, both end edges of the cylindrical main body can be brought into close contact with each other. Therefore, in the temporary fixing work before brazing, the both ends of the cylindrical main body are temporarily fixed so as not to open. Tools and temporary fixing work become unnecessary.
Accordingly, the manufacturing cost can be reduced.

以下にこの発明の実施例を図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

この実施例１の熱交換器のコア部構造は、請求項１、２、４に記載の発明に対応する。 まず、この実施例１の熱交換器のコア部構造を図面に基づいて説明する。   The core structure of the heat exchanger according to the first embodiment corresponds to the invention described in claims 1, 2, and 4. First, the core structure of the heat exchanger according to the first embodiment will be described with reference to the drawings.

図１はこの実施例１の熱交換器のコア部構造を示す正面図、図２は同組み付け前の分解状態を示す要部の拡大斜視図、図３は図１の III−III 線における拡大断面図であり、これらの図において、Ａはラジエータ（熱交換器）を示す。   FIG. 1 is a front view showing the core structure of the heat exchanger according to the first embodiment, FIG. 2 is an enlarged perspective view of a main part showing an exploded state before the assembly, and FIG. 3 is an enlarged view taken along line III-III in FIG. It is sectional drawing and in these figures, A shows a radiator (heat exchanger).

前記ラジエータＡは、上下に所定間隔を置いて対向配置されるアルミニウム製（金属製）の上下両タンク１、２の間に該上下両タンク１、２内を連通するチューブ３とフィン４が交互に接触配置され、該チューブ３とフィン４がその左右両側面において前記上下両タンク１、２の左右両端部分に固定されたアルミニウム製（金属製）の左右両レインフォース５、６相互間に挟持された状態で固定されている。   In the radiator A, tubes (3) and fins (4) communicating between the upper and lower tanks (1, 2) are alternately arranged between aluminum (metal) upper and lower tanks (1) and (2) opposed to each other with a predetermined distance therebetween. The tube 3 and the fin 4 are sandwiched between both left and right aluminum (metal) reinforcements 5 and 6 fixed to the left and right end portions of the upper and lower tanks 1 and 2 on both left and right sides thereof. It is fixed in the state.

さらに詳述すると、前記上下両タンク１、２は、筒状本体１１、２１と該筒状本体１１、２１の両端開口部内に圧入して閉塞するサイドパッチ１２、２２とで構成されている。なお、前記上方の筒状本体１１の側面一端部にはインレットパイプ１１３が接続され、下方の筒状本体部２１の側面一端部（インレットパイプ１３とは反対側端部）にはアウトレットパイプ１４が接続されるようになっている。   More specifically, the upper and lower tanks 1 and 2 are constituted by cylindrical main bodies 11 and 21 and side patches 12 and 22 that are press-fitted into the openings at both ends of the cylindrical main bodies 11 and 21 and closed. An inlet pipe 113 is connected to one end of the side surface of the upper cylindrical main body 11, and an outlet pipe 14 is connected to one end of the side surface of the lower cylindrical main body portion 21 (the end opposite to the inlet pipe 13). Connected.

上側の筒状本体１１は、図２に示すように、一枚のアルミニウム板材を上向きおよび内向きに折曲して断面四角形の筒状に形成し、その両端側縁部を筒状本体１１の上辺の中央部分において内向き（下向き）に折り込んで該両折り込み部１１ａ、１１ａを互いに当接させることにより、角筒状に形成されるようになっている。なお、下側の筒状本体２１も同様にして角筒状に形成されている。   As shown in FIG. 2, the upper cylindrical main body 11 is formed by bending a single aluminum plate material upward and inward to form a cylindrical shape having a square cross section, and both end side edges of the cylindrical main body 11 are formed. By folding inward (downward) at the center portion of the upper side and bringing the folded portions 11a and 11a into contact with each other, a rectangular tube shape is formed. The lower cylindrical main body 21 is also formed in a rectangular tube shape in the same manner.

図１に戻り、前記上下両サイドパッチ１２、２２は一枚のアルミニウム板材をプレス成形することにより、熱応力吸収部７、７を介してレインフォース５、６とそれぞれ一体に形成されている。
即ち、前記サイドパッチ１２（２２）は、図２、３に示すように、筒状本体１１の開口部内に圧入可能な圧入部１２ａと、開口端面に当接係止される係止フランジ部１２ｂとで構成されると共に、該サイドパッチ１２の上辺中央部には、開口部に圧入部１２ａを圧入した際に前記両折り込み部１１ａ、１１ａが嵌合するスリット１２ｃが形成されている。 Returning to FIG. 1, the upper and lower side patches 12, 22 are integrally formed with the reinforcements 5, 6 via the thermal stress absorbing parts 7, 7 by press-molding a single aluminum plate material.
That is, as shown in FIGS. 2 and 3, the side patch 12 (22) includes a press-fit portion 12a that can be press-fitted into the opening of the cylindrical main body 11, and a locking flange portion 12b that is abutted and locked to the opening end surface. In addition, a slit 12c is formed at the center of the upper side of the side patch 12 so as to fit the folded portions 11a and 11a when the press-fit portion 12a is press-fitted into the opening.

また、前記レインフォース５（６）部分は、板材の両側縁部を外向きに突出形成させた断面略コ字状に形成されることにより、剛性が高められている。
そして、前記熱応力吸収部７が、サイドパッチ１２における係止フランジ部１２ｂとレインフォース５（６）とのつなぎ部分を垂直面に対しレインフォース５（６）に向けて内向きに傾斜させた平板の傾斜部７１で構成されることにより、レインフォース５（６）の長手方向（上下方向）の熱衝撃に対する応力を吸収可能な構成となっている。 Further, the reinforcement 5 (6) is formed in a substantially U-shaped cross-section in which both side edges of the plate are formed to protrude outward, thereby increasing the rigidity.
The thermal stress absorbing portion 7 inclines the connecting portion between the locking flange portion 12b and the reinforcement 5 (6) in the side patch 12 inward toward the reinforcement 5 (6) with respect to the vertical plane. By comprising the flat inclined part 71, it is the structure which can absorb the stress with respect to the thermal shock of the longitudinal direction (up-down direction) of the reinforcement 5 (6).

なお、前記各チューブ３は、その両端部を上下両タンク１、２の底部に予め形成されたチューブ穴１３内に圧入された状態で組み付けられている（図３参照）。 Each tube 3 is assembled in a state where both ends thereof are press-fitted into tube holes 13 formed in advance at the bottoms of the upper and lower tanks 1 and 2 (see FIG. 3).

次に、この実施例１の作用・効果を説明する。
この実施例１では上述のように構成されるため、各チューブ３の両端部を上下両タンク１、２における筒状本体１１、２１の底部に予め形成されたチューブ穴１３内に圧入すると共に、両筒状本体１１、２１の開口端面にサイドパッチ１２、２２におけるフランジ部１２ｂを当接係止させた状態で、両端開口部に対し圧入部１２ａを圧入させることにより、両サイドパッチ１１、２１と共にレインフォース５、６の組み付けが同時に完了する。 Next, operations and effects of the first embodiment will be described.
Since this embodiment 1 is configured as described above, both ends of each tube 3 are press-fitted into tube holes 13 formed in advance at the bottoms of the cylindrical main bodies 11 and 21 in the upper and lower tanks 1 and 2, In the state where the flange portions 12b of the side patches 12, 22 are brought into contact with and engaged with the opening end surfaces of both the cylindrical main bodies 11, 21, the press-fit portions 12a are press-fitted into the opening portions at both ends, thereby both the side patches 11, 21 are pressed. At the same time, the assembly of the reinforcements 5 and 6 is completed at the same time.

なお、両端開口部に対し圧入部１２ａを圧入させる際に両折り込み部１１ａ、１１ａがスリット１２ｃに嵌合することにより、筒状本体１１、２１の両端縁部が開かないように仮止めされた状態となる。
そこで、この状態で、熱処理炉内でろう付けされることにより、各部材の接触部がろう材によって結合固定される。 In addition, when the press-fit portion 12a was press-fitted into the both-end openings, both the folding portions 11a and 11a were fitted into the slits 12c, so that both end edges of the cylindrical main bodies 11 and 21 were temporarily fixed. It becomes a state.
Therefore, in this state, the contact portion of each member is bonded and fixed by the brazing material by brazing in the heat treatment furnace.

以上詳細に説明してきたように、この実施例の熱交換器のコア部構造にあっては、レインフォース５、６の上下両端部がタンク１、２の一部を構成するサイドパッチ１２、２２と一体的に形成されることで、部品点数の減少により、ろう付け作業前の仮止め作業が簡略化されると共に、レインフォース５、６の上下両端部を挿通固定するためのレインフォース穴の加工が不要になるため、製造コストの低減化が可能になる。 As described above in detail, in the core structure of the heat exchanger of this embodiment, the side patches 12, 22 in which the upper and lower ends of the reinforcements 5, 6 constitute part of the tanks 1, 2. Is formed in a single piece, thereby reducing the number of parts, thereby simplifying the temporary fixing work before the brazing work, and forming the reinforcement hole holes for inserting and fixing the upper and lower ends of the reinforcements 5 and 6. Since processing is not necessary, the manufacturing cost can be reduced.

また、サイドパッチ１２、２２とレインフォース５、６との間に該レインフォース５、６の長手方向の熱衝撃に対する応力を吸収可能な形状の熱応力吸収部７が一体に形成され、この熱応力吸収部７が、サイドパッチ２１、２２とレインフォース５、６とのつなぎ部分を垂直面に対しレインフォース５（６）に向けて内向きに傾斜させた平板の傾斜部７１で構成されることにより、インレットパイプ１３からタンク１内に流入する温水が、それまで冷水が収容されていたチューブ３内に急激に流入する際に、レインフォース５に隣接して配置されたチューブ３の付け根部分に作用する熱応力を平板の傾斜部７１（熱応力吸収部７）が軸方向変形することで低減させることができるようになる。
従って、チューブ３とレインフォース５との熱膨張差によりレインフォース５に隣接して配置されるチューブ３の付け根部分に亀裂を発生させたり、レインフォース５の本体部分に歪みや亀裂変形を発生させることを防止できるようになる。 Further, a thermal stress absorbing portion 7 having a shape capable of absorbing stress against thermal shock in the longitudinal direction of the reinforcements 5 and 6 is integrally formed between the side patches 12 and 22 and the reinforcements 5 and 6. The stress absorbing portion 7 is composed of a flat plate inclined portion 71 in which a connecting portion between the side patches 21 and 22 and the reinforcements 5 and 6 is inclined inward toward the reinforcement 5 (6) with respect to the vertical plane. As a result, when the warm water flowing into the tank 1 from the inlet pipe 13 suddenly flows into the tube 3 in which cold water has been stored, the root portion of the tube 3 disposed adjacent to the reinforcement 5 The thermal stress acting on the flat plate inclined portion 71 (thermal stress absorbing portion 7) can be reduced by axial deformation.
Therefore, a crack is generated in the base portion of the tube 3 disposed adjacent to the reinforcement 5 due to a difference in thermal expansion between the tube 3 and the reinforcement 5, and a distortion or crack deformation is generated in the body portion of the reinforcement 5. Can be prevented.

また、レインフォース５、６の支持点がタンク１、２の開口端部となるため、レインフォース５、６により剛性が高められる部分（支持点）がチューブ３の付け根部分から最も離れた位置となるため、レインフォース５、６に隣接して配置されるチューブ３の付け根部分に作用する熱応力の低減効果をさらに高めることができるようになる。   In addition, since the support points of the reinforcements 5 and 6 are the open ends of the tanks 1 and 2, the portion (support point) whose rigidity is enhanced by the reinforcements 5 and 6 is farthest from the base portion of the tube 3. Therefore, the effect of reducing the thermal stress acting on the root portion of the tube 3 disposed adjacent to the reinforcements 5 and 6 can be further enhanced.

また、筒状本体１１、２１の両端開口部に対し圧入部１２ａを圧入させる際に両折り込み部１１ａ、１１ａがスリット１２ｃに嵌合することにより、筒状本体１１、２１の両端側縁部が開かないように密着させた状態で仮止めされるため、ろう付け作業前の仮止め作業において、筒状本体１１、２１の両端側縁部が開かないように仮止めする治具および仮止め作業が不要になり、従って、製造コストを低減化できるようになる。   Further, when the press-fitting portions 12a are press-fitted into the opening portions at both ends of the cylindrical main bodies 11, 21, the both folding portions 11a, 11a are fitted into the slits 12c, so that both end side edges of the cylindrical main bodies 11, 21 are fitted. Since it is temporarily fixed in close contact so as not to open, a jig and a temporary fixing operation for temporarily fixing the both ends of the cylindrical main bodies 11 and 21 so as not to open in the temporary fixing operation before the brazing operation Therefore, the manufacturing cost can be reduced.

次に、他の実施例について説明する。この他の実施例の説明にあたっては、前記実施例１と同様の構成部分については図示を省略し、もしくは同一の符号を付けてその説明を省略し、相違点についてのみ説明する。   Next, another embodiment will be described. In the description of the other embodiments, the same components as those of the first embodiment are not shown, or the same reference numerals are given and the description thereof is omitted, and only the differences are described.

この実施例２は、前記実施例１における熱応力吸収部７の変形例を示すものであり、図４の要部拡大斜視図に示すように、サイドパッチ１１、２１とレインフォース５、６とのつなぎ部分に外向き円弧状に湾曲させた湾曲部７２が形成されている構成としたものである。   The second embodiment shows a modification of the thermal stress absorbing portion 7 in the first embodiment. As shown in the enlarged perspective view of the main part of FIG. 4, the side patches 11, 21 and the reinforcements 5, 6 A bending portion 72 that is curved in an outward arc shape is formed at the connecting portion.

即ち、この実施例２では、インレットパイプ１３からタンク１内に流入する温水が、それまで冷水が収容されていたチューブ３内に急激に流入する際に、レインフォース５に隣接して配置されたチューブ３の付け根部分に作用する熱応力を湾曲部７２（熱応力吸収部７）が軸方向変形することで低減させることができるようになる。
従って、この実施例２では、前記実施例１と同様の効果が得られる。 That is, in this Example 2, when the hot water flowing into the tank 1 from the inlet pipe 13 suddenly flows into the tube 3 in which the cold water has been accommodated, it is arranged adjacent to the reinforcement 5. The thermal stress acting on the base portion of the tube 3 can be reduced by the axial deformation of the curved portion 72 (thermal stress absorbing portion 7).
Therefore, in the second embodiment, the same effect as in the first embodiment can be obtained.

以上本実施例を説明してきたが、本発明は上述の実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等があっても、本発明に含まれる。
例えば、実施例では、上下両サイドパッチ１１、２１をレインフォース５、６と一体に形成したが、一方のサイドパッチのみを一体化させるようにしてもよい。 Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.
For example, in the embodiment, the upper and lower side patches 11 and 21 are formed integrally with the reinforcements 5 and 6, but only one side patch may be integrated.

また、上下両サイドパッチ１１、２１をレインフォース５、６と一体に形成させる場合においても、サイドパッチ１１、２１のうちのいずれか一方との間にのみ熱応力吸収部７を形成させるようにしてもよい。   Further, even when the upper and lower side patches 11 and 21 are formed integrally with the reinforcements 5 and 6, the thermal stress absorbing portion 7 is formed only between one of the side patches 11 and 21. May be.

また、実施例では、熱応力吸収部７として、平板の傾斜部７１や円弧状に湾曲させた湾曲部７２で構成させたが、その他に、断面Ｓ字状、断面く字状、断面ノコ歯状等に形成させるようにしてもよい。   Further, in the embodiment, the thermal stress absorbing portion 7 is constituted by a flat inclined portion 71 or a curved portion 72 curved in an arc shape, but in addition, a cross-section S shape, a cross-section shape, a cross-section saw tooth You may make it form in a shape.

実施例１の熱交換器のコア部構造を示す正面図である。It is a front view which shows the core part structure of the heat exchanger of Example 1. FIG. 実施例１の熱交換器のコア部構造を示す組み付け前の分解状態を示す要部の拡大斜視図である。It is an expansion perspective view of the principal part which shows the decomposition | disassembly state before the assembly | attachment which shows the core part structure of the heat exchanger of Example 1. FIG. 図１の III−III 線における拡大断面図である。It is an expanded sectional view in the III-III line of FIG. 実施例２の熱交換器のコア部構造を示す要部斜視図である。It is a principal part perspective view which shows the core part structure of the heat exchanger of Example 2. FIG.

符号の説明Explanation of symbols

１ 上側のタンク
２ 下側のタンク
３ チューブ
４ フィン
５ レインフォース
６ レインフォース
７ 熱応力吸収部
１１ 筒状本体
１１ａ 折り込み部
１２ サイドパッチ
１２ａ 圧入部
１２ｂ 係止フランジ部
１２ｃ スリット
１３ インレットパイプ
１４ アウトレットパイプ
２１ 筒状本体
２２ サイドパッチ
７１ 傾斜部（熱応力吸収部）
７２ 湾曲部（熱応力吸収部） DESCRIPTION OF SYMBOLS 1 Upper tank 2 Lower tank 3 Tube 4 Fin 5 Reinforce 6 Reinforce 7 Thermal stress absorption part 11 Cylindrical main body 11a Folding part 12 Side patch 12a Press-in part 12b Locking flange part 12c Slit 13 Inlet pipe 14 Outlet pipe 21 cylindrical body 22 side patch 71 inclined part (thermal stress absorption part)
72 Curved part (thermal stress absorption part)

Claims (4)

上下に所定間隔を置いて対向配置される金属製の上下両タンクの間に該上下両タンク内を連通するチューブとフィンが交互に接触配置され、該チューブとフィンがその左右両側面において前記上下両タンクの左右両端部分に固定された金属製の左右両レインフォース相互間に挟持された状態で固定され、前記上下両タンクが筒状本体と該筒状本体の両端開口部内に圧入して閉塞するサイドパッチとで構成された構造の熱交換器において、
前記左右両レインフォースの少なくとも一方の上下両端部が前記タンクの対応するサイドパッチと一体的に形成され、該サイドパッチと前記レインフォースとの間に該レインフォースの長手方向の熱衝撃に対する応力を吸収可能な形状の熱応力吸収部が一体に形成されていることを特徴とする熱交換器のコア部構造。 Tubes and fins communicating with the upper and lower tanks are alternately placed between metal upper and lower tanks opposed to each other at a predetermined interval in the upper and lower sides, and the tubes and fins are arranged on the left and right side surfaces of the upper and lower sides. Fixed between metal left and right reinforcements fixed to the left and right ends of both tanks. The upper and lower tanks are press-fitted into the cylindrical body and the openings at both ends of the cylindrical body and closed. In a heat exchanger with a structure composed of side patches that
The upper and lower ends of at least one of the left and right reinforcements are formed integrally with the corresponding side patch of the tank, and stress against thermal shock in the longitudinal direction of the reinforcement is applied between the side patch and the reinforcement. A heat exchanger core part structure in which a heat stress absorbing part having an absorbable shape is integrally formed. 請求項１に記載の熱交換器のコア部構造において、前記熱応力吸収部が、前記サイドパッチとレインフォースとのつなぎ部分を垂直面に対し車幅方向に傾斜させた傾斜部で構成されていることを特徴とする熱交換器のコア部構造。   The core part structure of the heat exchanger according to claim 1, wherein the thermal stress absorption part is configured by an inclined part in which a connecting part between the side patch and the reinforcement is inclined in a vehicle width direction with respect to a vertical plane. A core part structure of a heat exchanger characterized by comprising: 請求項１に記載の熱交換器のコア部構造において、前記熱応力吸収部が、前記サイドパッチとレインフォースとのつなぎ部分を車幅方向に湾曲させた湾曲部で構成されていることを特徴とする熱交換器のコア部構造。   The core part structure of the heat exchanger according to claim 1, wherein the thermal stress absorbing part is configured by a curved part obtained by curving a connecting part between the side patch and the reinforcement in a vehicle width direction. The core structure of the heat exchanger. 請求項１〜３のいずれか１項に記載の熱交換器のコア部構造において、前記上下両タンクにおける筒状本体が一枚の板を筒状に形成してその両端縁部を内側に折り込んで該折り込み部を互いに結合するように構成され、
前記サイドパッチには前記筒状本体の開口部内に圧入させた際に前記折り込み部が嵌合するスリットが形成されていることを特徴とする熱交換器のコア部構造。 The core part structure of the heat exchanger of any one of Claims 1-3 WHEREIN: The cylindrical main body in the said upper and lower tank forms one board in a cylindrical shape, and folds the both-ends edge part inside. The folds are configured to be coupled to each other,
A core part structure of a heat exchanger, wherein the side patch is formed with a slit into which the folding part is fitted when pressed into the opening of the cylindrical main body.
JP2003315863A 2003-09-08 2003-09-08 Core structure of heat exchanger Pending JP2005083647A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008008710A1 (en) * 2006-07-08 2008-01-17 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
JP2010151271A (en) * 2008-12-26 2010-07-08 Showa Corp Differential device
US8844504B2 (en) 2010-03-18 2014-09-30 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
KR101462887B1 (en) * 2008-08-11 2014-11-19 한라비스테온공조 주식회사 A Condenser
US9309839B2 (en) 2010-03-18 2016-04-12 Modine Manufacturing Company Heat exchanger and method of manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008008710A1 (en) * 2006-07-08 2008-01-17 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
KR101462887B1 (en) * 2008-08-11 2014-11-19 한라비스테온공조 주식회사 A Condenser
JP2010151271A (en) * 2008-12-26 2010-07-08 Showa Corp Differential device
US8844504B2 (en) 2010-03-18 2014-09-30 Modine Manufacturing Company Heat exchanger and method of manufacturing the same
US9309839B2 (en) 2010-03-18 2016-04-12 Modine Manufacturing Company Heat exchanger and method of manufacturing the same

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