JP5341863B2 - Heat exchanger and heat exchanger assembly method - Google Patents

Heat exchanger and heat exchanger assembly method Download PDF

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JP5341863B2
JP5341863B2 JP2010243173A JP2010243173A JP5341863B2 JP 5341863 B2 JP5341863 B2 JP 5341863B2 JP 2010243173 A JP2010243173 A JP 2010243173A JP 2010243173 A JP2010243173 A JP 2010243173A JP 5341863 B2 JP5341863 B2 JP 5341863B2
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heat exchanger
flat tube
pair
slit
row
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JP2011242114A (en
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雄一 松元
祐介 飯野
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Sanden Corp
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Sanden Corp
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Priority to JP2010243173A priority Critical patent/JP5341863B2/en
Priority to EP11771872A priority patent/EP2562508A1/en
Priority to PCT/JP2011/058763 priority patent/WO2011132536A1/en
Priority to US13/642,402 priority patent/US20130032317A1/en
Priority to CN2011800195659A priority patent/CN102869946A/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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F28F9/0217—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions the partitions being separate elements attached to header boxes
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Description

本発明は、一対のヘッダタンクとこれらのヘッダタンクを連通する複数の扁平チューブとを含んで構成される熱交換器に関するもので、特にヘッダタンクと扁平チューブとの組立構造及び組立方法に関する。   The present invention relates to a heat exchanger including a pair of header tanks and a plurality of flat tubes communicating with these header tanks, and more particularly to an assembly structure and an assembly method of a header tank and flat tubes.

従来の熱交換器として、特許文献１に示されるように、互いに平行に延びる一対のヘッダタンクと、これら一対のヘッダタンクを連通する互いに平行に２列に並べられた複数の扁平チューブとを含んで構成されるものがある。   As shown in Patent Document 1, as a conventional heat exchanger, a pair of header tanks extending in parallel with each other and a plurality of flat tubes arranged in two rows in parallel with each other to communicate with the pair of header tanks are included. There is what is composed of.

特開２００３−０７５０２４号公報JP 2003-075024 A

しかしながら、従来の熱交換器におけるヘッダタンクと扁平チューブとの組立構造では、ヘッダタンクの扁平チューブ挿入用のスリットに扁平チューブの端部を挿入することになるが、挿入部のクリアランスが小さいため、挿入は容易ではない。
このため、扁平チューブの端部に、つぶし等によるテーパ状の端末加工を施して、ヘッダタンク側のスリットへの挿入性を確保しているが、この端末加工のために、生産性が悪く、自動化も困難である。また、端部をテーパ状にして挿入すると、突き当て部がないため、挿入寸法の管理が面倒である。また、つぶし処理は、流路面積を狭め、熱交換性能への影響も少なくない。 However, in the assembly structure of the header tank and the flat tube in the conventional heat exchanger, the end of the flat tube is inserted into the slit for inserting the flat tube of the header tank, but the clearance of the insertion portion is small, Insertion is not easy.
For this reason, the end of the flat tube is subjected to a tapered end processing by crushing or the like to ensure the insertability into the slit on the header tank side, but because of this end processing, productivity is poor, Automation is also difficult. Moreover, if the end portion is inserted in a tapered shape, there is no abutting portion, and therefore management of the insertion dimension is troublesome. In addition, the crushing process narrows the flow path area and has a considerable influence on the heat exchange performance.

また、２列の扁平チューブをその長手方向に挿入して一対のヘッダダンク間に位置させる場合、扁平チューブを１列ずつ一対のヘッダタンク間に取付けようとすると、１列目の取付け後は２列目の取付けが困難となる。従って、２列の扁平チューブを同時に挿入しなければならない。しかし、２列の同時挿入は、挿入方向及び位置に正確さが必要であり、生産性が悪い。   In addition, when two rows of flat tubes are inserted in the longitudinal direction and positioned between the pair of header danks, if the flat tubes are installed one by one between the pair of header tanks, 2 after the first row is installed. It becomes difficult to install the rows. Therefore, two rows of flat tubes must be inserted simultaneously. However, the simultaneous insertion of two rows requires accuracy in the insertion direction and position, and the productivity is poor.

本発明は、このような実状に鑑み、扁平チューブに端末加工を施すことなく、ヘッダタンクと扁平チューブとを容易に組み立てることができるようにすることを課題とする。   In view of such a situation, an object of the present invention is to make it possible to easily assemble a header tank and a flat tube without subjecting the flat tube to terminal processing.

上記の課題を解決するために、本発明に係る組立構造では、ヘッダタンク側の扁平チューブとの連通部は、ヘッダタンクのこれと対をなす他方のヘッダタンクとの対向面の幅方向中央部側から、幅方向の一方の端部側で前記中央部より対向方向と反対方向に後退する部位にかけて形成された第１のスリット、及び、前記対向面の幅方向中央部側から、幅方向の他方の端部側で前記中央部より対向方向と反対方向に後退する部位にかけて形成された第２のスリットとする。そして、扁平チューブの端部は、ヘッダタンクの前記第１及び第２のスリットに、ヘッダタンクの側面側から挿入可能で、扁平チューブは、その幅方向には、前記第１及び第２のスリットの前記対向面中央部側の端部の第１の突当部に突き当てられる構成とする。
前記後退する部位は、ヘッダタンクの側面であってもよいし、ヘッダタンクの対向面と側面とのつながり部であってもよい。また、前記つながり部は、アール部をなしていてもよいし、面取り状の傾斜部をなしていてもよい。 In order to solve the above-described problems, in the assembly structure according to the present invention, the communication portion with the flat tube on the header tank side is the central portion in the width direction of the opposite surface of the header tank facing the other header tank. A first slit formed from one side to a portion retreating from the central portion in the opposite direction to the opposing direction on one end side in the width direction, and from the width direction central portion side of the opposing surface, The second slit is formed on the other end side from the central portion to a portion retreating in a direction opposite to the facing direction. And the edge part of a flat tube can be inserted in the said 1st and 2nd slit of a header tank from the side surface side of a header tank, and a flat tube has the said 1st and 2nd slit in the width direction. It is set as the structure abutted on the 1st abutting part of the edge part of the said opposing surface center part side.
The retreating part may be a side surface of the header tank, or a connecting portion between the opposing surface and the side surface of the header tank. Moreover, the said connection part may comprise the rounded part, and may comprise the chamfered inclined part.

前記第１及び第２のスリットの前記後退する部位側の端部は、前記対向面中央部側の端部と直角に設け、前記扁平チューブは、長手方向には、前記第１及び第２のスリットの前記後退する部位側の端部の第２の突当部に突き当てられるようにするとよい。
更に、前記扁平チューブがその長手方向に突き当てられる前記第１及び第２のスリットの前記後退する部位側の端部に、段差を設けて、前記扁平チューブが幅方向に突き当てられる第３の突当部を形成し、前記段差の高さは、前記対向面の高さより低くするとよい。 The end portions of the first and second slits on the retreating portion side are provided at right angles to the end portions on the opposed surface central portion side, and the flat tube has the first and second slits in the longitudinal direction. It is good to make it hit | abut on the 2nd abutting part of the edge part by the side of the said retreating part of a slit.
Furthermore, a step is provided at the end portion of the first and second slits where the flat tube is abutted in the longitudinal direction, and the flat tube is abutted in the width direction. An abutting portion is formed, and the height of the step is preferably lower than the height of the facing surface.

又は、前記第１及び第２のスリットの前記後退する部位側の端部は、前記対向面中央部側の端部と平行に設け、前記扁平チューブは、長手方向には、前記第１及び第２のスリットを貫通して、前記ヘッダタンク内の第４の突当部に突き当てられるようにしてもよい。
ここで、前記第１及び第２のスリットの前記後退する部位側の端部のスリット孔方向の前端及び後端について、
前記扁平チューブの板厚をＤ１、
前記扁平チューブの前記対向面から、前記前端までの後退方向の距離をＤ２、
前記後端から、前記扁平チューブの端部までの距離をＤ３とすると、
Ｄ２≧Ｄ１、及び、Ｄ３＞０
好ましくは、
Ｄ２＞Ｄ１、及び、Ｄ３＞０
に設定するとよい。 Alternatively, end portions of the first and second slits on the retreating portion side are provided in parallel with an end portion on the opposed surface central portion side, and the flat tube has the first and first slits in the longitudinal direction. You may make it abut | abut against the 4th abutting part in the said header tank through 2 slits.
Here, the front end and the rear end in the slit hole direction of the end portion of the first and second slits on the retreating part side,
The thickness of the flat tube is D1,
The distance in the backward direction from the facing surface of the flat tube to the front end is D2,
If the distance from the rear end to the end of the flat tube is D3,
D2 ≧ D1 and D3> 0
Preferably,
D2> D1 and D3> 0
It is good to set to.

また、上記構造の熱交換器の組立方法としては、次の第１及び第２の組立方法を提案する。
第１の組立方法は、１列目の扁平チューブをその幅方向端部を上側にして配列する第１工程と、前記１列目の扁平チューブの両端部に、上側から、一対のヘッダタンクの一方の側面側の第１のスリットを嵌合させる第２工程と、前記一対のヘッダタンクの他方の側面側の第２のスリットに、上側から、２列目の扁平チューブを嵌合させる第３工程とを含む。 Further, the following first and second assembling methods are proposed as an assembling method of the heat exchanger having the above structure.
The first assembling method includes a first step of arranging the first row of flat tubes with the end in the width direction on the upper side, and a pair of header tanks from above on both ends of the first row of flat tubes. A second step of fitting the first slit on one side surface, and a third step of fitting the second row of flat tubes from above into the second slit on the other side surface of the pair of header tanks. Process.

第２の組立方法は、一対のヘッダタンクをその一方の側面を上側にして配置する第１工程と、前記一対のヘッダタンクの前記一方の側面側の第１のスリットに、１列目の扁平チューブの両端部を嵌合する第２工程と、嵌合している前記一対のヘッダタンクと前記１列目の扁平チューブとを裏返す第３工程と、前記一対のヘッダタンクの他方の側面側の第２のスリットに、上側から、２列目の扁平チューブを嵌合する第４工程とを含む。   The second assembly method includes a first step in which a pair of header tanks are arranged with one side face up, and a first row of flats in the first slit on the one side face of the pair of header tanks. A second step of fitting both ends of the tube, a third step of turning over the pair of header tanks fitted and the flat tube in the first row, and the other side of the pair of header tanks And a fourth step of fitting the second row of flat tubes into the second slit from above.

ここで、前記第１の組立方法での第３工程、又は、前記第２の組立方法での第４工程では、前記一対のヘッダタンクの第２のスリットに２列目の扁平チューブを嵌合させる前に、前記一対のヘッダタンクの上端を外側に開き、嵌合後に、閉じるとよい。   Here, in the third step of the first assembling method or the fourth step of the second assembling method, the second row of flat tubes are fitted into the second slits of the pair of header tanks. The upper ends of the pair of header tanks may be opened outward before closing, and closed after fitting.

本発明の組立構造によれば、扁平チューブの端部をヘッダタンクの側面側からスリットに挿入するため、扁平チューブの幅方向端部のアール部がガイドとなり、特別な端末処理を施すことなく、挿入性を確保できる。
また、扁平チューブに対し、各種の突当部を有する構成とすることにより、挿入位置を安定させて、組み立てを容易化することができると共に、位置決め状態の保持もより容易となる。 According to the assembly structure of the present invention, since the end portion of the flat tube is inserted into the slit from the side surface side of the header tank, the rounded portion at the width direction end portion of the flat tube serves as a guide, and without performing a special terminal treatment, Insertability can be secured.
Further, by adopting a configuration having various abutting portions with respect to the flat tube, the insertion position can be stabilized, the assembly can be facilitated, and the positioning state can be easily maintained.

また、本発明の第１及び第２の組立方法によれば、ヘッダタンクの側面より扁平チューブを挿入できる利点を活かして、一対のヘッダタンクと２列の扁平チューブとを効率的に組み立てることができる。   Moreover, according to the 1st and 2nd assembly method of this invention, taking advantage of the advantage that a flat tube can be inserted from the side surface of a header tank, a pair of header tanks and two rows of flat tubes can be assembled efficiently. it can.

本発明の実施形態を示す熱交換器の概略斜視図The schematic perspective view of the heat exchanger which shows embodiment of this invention ヘッダタンクと扁平チューブとの組立構造の第１実施形態を示す平面図The top view which shows 1st Embodiment of the assembly structure of a header tank and a flat tube 同上第１実施形態の側面図Side view of the first embodiment ヘッダタンクと扁平チューブとの組立構造の第２実施形態を示す平面図The top view which shows 2nd Embodiment of the assembly structure of a header tank and a flat tube 同上第２実施形態の側面図Side view of the second embodiment 同上第２実施形態の要部拡大図The principal part enlarged view of 2nd Embodiment same as the above 第１の具体的組立方法を示す図The figure which shows the 1st specific assembly method 第２の具体的組立方法を示す図The figure which shows the 2nd concrete assembly method ヘッダタンクと扁平チューブとの組立構造の第３実施形態を示す平面図The top view which shows 3rd Embodiment of the assembly structure of a header tank and a flat tube 同上第３実施形態の組立状態での平面図The top view in the assembly state of 3rd Embodiment same as the above 同上第３実施形態での寸法関係を示す平面図The top view which shows the dimensional relationship in 3rd Embodiment same as the above. 図１１のＸ矢視図X arrow view of FIG.

以下、本発明の実施の形態について、詳細に説明する。
図１は本発明の実施形態を示す熱交換器の概略斜視図である。
本実施形態の熱交換器は、互いに平行に延びる一対のヘッダタンク１、２と、これら一対のヘッダタンク１、２を連通する互いに平行に２列に並べられた複数の扁平チューブ３（１列目の扁平チューブ３Ａと２列目の扁平チューブ３Ｂ）と、各列の扁平チューブ３、３間に設けられたフィン４と、を含んで構成される。図中の矢印は熱交換用空気の通流方向を示している。 Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic perspective view of a heat exchanger showing an embodiment of the present invention.
The heat exchanger according to the present embodiment includes a pair of header tanks 1 and 2 extending in parallel with each other, and a plurality of flat tubes 3 (one row) arranged in two rows in parallel with each other and communicating with the pair of header tanks 1 and 2. The flat tube 3 </ b> A of the eye and the flat tube 3 </ b> B of the second row, and the fins 4 provided between the flat tubes 3 and 3 of each row are configured. The arrows in the figure indicate the direction of heat exchange air flow.

図２及び図３はヘッダタンク１、２と扁平チューブ３との組立構造の第１実施形態を示す平面図及び側面図である。
ヘッダタンク１、２は、図２に示されるような略矩形断面のアルミ製筒状体である（但し本実施形態では分割体から構成してある）。そして、ヘッダタンク１、２には、その延在方向に沿って内部空間を２分する仕切壁５が設けられ、これにより第１通路６と第２通路７とに画成される。 2 and 3 are a plan view and a side view showing a first embodiment of the assembly structure of the header tanks 1 and 2 and the flat tube 3.
The header tanks 1 and 2 are aluminum cylindrical bodies having a substantially rectangular cross section as shown in FIG. 2 (however, in the present embodiment, the header tanks 1 and 2 are composed of divided bodies). The header tanks 1 and 2 are provided with a partition wall 5 that divides the internal space into two along the extending direction, thereby defining a first passage 6 and a second passage 7.

ここで、一対のヘッダタンク１、２のうち、一方のヘッダタンク１には、その第１通路６に冷媒の入口パイプ（図示せず）が接続され、第２通路７に冷媒の出口パイプ（図示せず）が接続される。
他方のヘッダタンク２には、その仕切壁５に連通孔８が設けられ、ヘッダタンク２の第１通路６と第２通路７とは連通している。従って、ヘッダタンク２については仕切壁５そのものをなくしてもよい。 Here, of the pair of header tanks 1, 2, one header tank 1 is connected to a refrigerant inlet pipe (not shown) in the first passage 6, and a refrigerant outlet pipe (not shown) in the second passage 7. (Not shown) are connected.
The other header tank 2 is provided with a communication hole 8 in the partition wall 5, and the first passage 6 and the second passage 7 of the header tank 2 communicate with each other. Therefore, the partition wall 5 itself may be omitted for the header tank 2.

扁平チューブ３は、図３に示されるような断面扁平なアルミ製のチューブで、幅方向（図３の左右方向）の両端部はアール部となっている。そして、複数の扁平チューブ３は、互いに扁平面を向かい合わせにして、ヘッダタンク１、２の延在方向に並べてある。従って、前記扁平面は、ヘッダタンク１、２間の空間を通過する熱交換用空気の通流方向と平行をなす。   The flat tube 3 is an aluminum tube having a flat cross section as shown in FIG. 3, and both end portions in the width direction (left-right direction in FIG. 3) are rounded portions. The plurality of flat tubes 3 are arranged in the extending direction of the header tanks 1 and 2 with the flat surfaces facing each other. Therefore, the flat surface is parallel to the flow direction of the heat exchange air passing through the space between the header tanks 1 and 2.

また、かかる扁平チューブ３の列を２列にして、１列目の扁平チューブ３Ａが、ヘッダタンク１の第１通路６とヘッダタンク２の第１通路６とを連通するようにし、２列目の扁平チューブ３Ｂが、ヘッダタンク１の第２通路７とヘッダタンク２の第２通路７とを連通するようにしてある。ここで、各連通部はろう付けにより接合される。
フィン４（図１）は、例えばコルゲートフィンであり、扁平チューブ３の扁平面間にろう付けにより接合されて配置される。 Further, the flat tubes 3 are arranged in two rows so that the flat tubes 3A in the first row communicate with the first passage 6 of the header tank 1 and the first passage 6 of the header tank 2 in the second row. The flat tube 3 </ b> B communicates the second passage 7 of the header tank 1 and the second passage 7 of the header tank 2. Here, each communicating part is joined by brazing.
The fins 4 (FIG. 1) are, for example, corrugated fins, and are arranged by being joined by brazing between the flat surfaces of the flat tube 3.

ここにおいて、冷媒は、ヘッダタンク１の第１通路６から１列目の扁平チューブ３Ａ内を流れて、ヘッダタンク２の第１通路６へ流れ、これと連通しているヘッダタンク２の第２通路７から２列目の扁平チューブ３Ｂ内を流れて、ヘッダタンク１の第２通路７へ流れる。従って、１列目の扁平チューブ３Ａと２列目の扁平チューブ３Ｂとでは冷媒の流れが逆向きとなり、いわゆるカウンターフローとなる。そして、冷媒が扁平チューブ３Ａ、３Ｂ内を流れるときに、コルゲートフィン４を介し、ヘッダタンク１、２間の空間を通過する熱交換用空気との間で熱交換がなされる。   Here, the refrigerant flows from the first passage 6 of the header tank 1 through the first row of flat tubes 3A to the first passage 6 of the header tank 2, and the second of the header tank 2 in communication therewith. It flows through the second row of flat tubes 3 </ b> B from the passage 7 and flows to the second passage 7 of the header tank 1. Therefore, the flow of the refrigerant is reversed between the first row of flat tubes 3A and the second row of flat tubes 3B, which is a so-called counter flow. When the refrigerant flows through the flat tubes 3 </ b> A and 3 </ b> B, heat is exchanged with the air for heat exchange passing through the space between the header tanks 1 and 2 via the corrugated fins 4.

次に、本実施形態の熱交換器におけるヘッダタンク１、２と扁平チューブ３との組立構造について説明する。
ヘッダタンク１側の扁平チューブ３との連通部は、対をなす他方のヘッダタンク２との対向面１ａと、これに連なる一方の側面１ｂとの間の角部（アール部）に、これらの両面１ａ、１ｂに跨って形成された第１のスリット１１、及び、前記対向面１ａと、これに連なる他方の側面１ｃとの間の角部（アール部）に、これらの両面１１ａ、１１ｃに跨って形成された第２のスリット１２とする。また、第１及び第２のスリット１１、１２の前記対向面１ａ側の端部ａ、ａ’はアール部とする。第１及び第２のスリット１１、１２の前記側面１ｂ、１ｃ側の端部ｂ、ｃにはアール部を設けない。 Next, an assembly structure of the header tanks 1 and 2 and the flat tube 3 in the heat exchanger of the present embodiment will be described.
The communicating portion with the flat tube 3 on the header tank 1 side is formed in the corner portion (the rounded portion) between the opposing surface 1a of the other header tank 2 that forms a pair and the one side surface 1b that is connected to the opposing surface 1a. The first slit 11 formed over both surfaces 1a and 1b, and the corner portion (the round portion) between the opposing surface 1a and the other side surface 1c connected to the first slit 11 are formed on the both surfaces 11a and 11c. The second slit 12 is formed so as to straddle. Further, end portions a and a ′ on the facing surface 1a side of the first and second slits 11 and 12 are rounded portions. The first and second slits 11 and 12 are not provided with rounded portions at the end portions b and c on the side surfaces 1b and 1c.

言い換えれば、ヘッダタンク１側の扁平チューブ３との連通部は、対をなす他方のヘッダタンク２との対向面１ａの幅方向中央部側から、幅方向の一方の端部側で前記中央部より対向方向と反対方向に後退する部位（側面１ｂ、又は、対向面１ａと側面１ｂとのつながり部）にかけて形成された第１のスリット１１、及び、前記対向面１ａの幅方向中央部側から、幅方向の他方の端部側で前記中央部より対向方向と反対方向に後退する部位（側面１ｃ、又は、対向面１ａと側面１ｃとのつながり部）にかけて形成された第２のスリット１２とする。尚、本例では、対向面１ａと側面１ｂ、１ｃとのつながり部は、アール部をなしている。また、第１及び第２スリット１１、１２の前記後退する部位側の端部ｂ、ｃにおける前記対向面１ａからの後退距離は、ヘッダタンク２（その対向面１ａ部分）の板厚よりも大である。また、前記第１及び第２のスリット１１、１２の前記後退する部位側の端部ｂ、ｃは、前記対向面１ａ側の端部ａ、ａ’と直角に設けられる。
ヘッダタンク２側の扁平チューブ３との連通部についても同様である。 In other words, the communication portion with the flat tube 3 on the header tank 1 side is the center portion on the one end portion side in the width direction from the width direction center portion side of the facing surface 1a with the other header tank 2 forming a pair. From the first slit 11 formed over a portion (side surface 1b or a connecting portion between the facing surface 1a and the side surface 1b) that is further retracted in the direction opposite to the facing direction, and the width direction central portion side of the facing surface 1a. A second slit 12 formed over a portion (side surface 1c or a connecting portion between the facing surface 1a and the side surface 1c) that recedes in the direction opposite to the facing direction from the central portion on the other end side in the width direction; To do. In this example, the connecting portion between the facing surface 1a and the side surfaces 1b and 1c forms a rounded portion. Further, the retreat distance from the facing surface 1a at the retreating portion side ends b and c of the first and second slits 11 and 12 is larger than the plate thickness of the header tank 2 (the facing surface 1a portion). It is. Further, the end portions b and c on the retreating portion side of the first and second slits 11 and 12 are provided at right angles to the end portions a and a ′ on the facing surface 1a side.
The same applies to the communication portion with the flat tube 3 on the header tank 2 side.

前記第１のスリット１１には、１列目の扁平チューブ３Ａの端部が挿入され、前記第２のスリット１２には、２列目の扁平チューブ３Ｂの端部が挿入される。
ここで、１列目の扁平チューブ３Ａの端部は、ヘッダタンク１の第１のスリット１１に、ヘッダタンク１の一方の側面１ｂから挿入可能であり、２列目の扁平チューブ３Ｂの端部は、ヘッダタンク１の第２のスリット１２に、ヘッダタンク１の他方の側面１ｃから挿入可能である。 The end of the flat tube 3A in the first row is inserted into the first slit 11, and the end of the flat tube 3B in the second row is inserted into the second slit 12.
Here, the end of the flat tube 3A in the first row can be inserted into the first slit 11 of the header tank 1 from one side surface 1b of the header tank 1, and the end of the flat tube 3B in the second row Can be inserted into the second slit 12 of the header tank 1 from the other side surface 1 c of the header tank 1.

そして、１列目の扁平チューブ３Ａの端部は、その幅方向には、第１のスリット１１の対向面１ａ側の端部（アール部）ａに突き当てられ、長手方向には、第１のスリット１１の側面１ｂ側の端部ｂに突き当てられる。また、２列目の扁平チューブ３Ｂの端部は、その幅方向には、第２のスリット１２の対向面１ａ側の端部（アール部）ａ’に突き当てられ、長手方向には、第２のスリット１２の側面１ｃ側の端部ｃに突き当てられる。ここで、端部ａ、ａ’が第１の突当部をなし、端部ｂ、ｃが第２の突当部をなす。
１列目及び２列目の扁平チューブ３Ａ、３Ｂの端部と、ヘッダタンク２の第１及び第２のスリット１１、１２との関係も上記と同様である。 The end portion of the flat tube 3A in the first row is abutted against the end portion (R portion) a on the facing surface 1a side of the first slit 11 in the width direction, and the first portion in the longitudinal direction. Of the slit 11 is abutted against the end b on the side surface 1b side. Further, the end portion of the flat tube 3B in the second row is abutted against the end portion (R portion) a ′ on the facing surface 1a side of the second slit 12 in the width direction, and the end portion in the longitudinal direction is the first portion. 2 is abutted against the end c on the side surface 1 c side of the slit 12. Here, the end portions a and a ′ constitute the first abutting portion, and the end portions b and c constitute the second abutting portion.
The relationship between the ends of the flat tubes 3A and 3B in the first row and the second row and the first and second slits 11 and 12 of the header tank 2 is the same as described above.

かかる構成によれば、ヘッダタンク１、２に１列目の扁平チューブ３Ａを組み付けるときは、ヘッダタンク１、２の第１のスリット１１に対し、１列目の扁平チューブ３Ａの端部を、ヘッダタンク１、２の側方（側面１ｂ側）から挿入して、扁平チューブ３Ａの幅方向の端部（アール部）を第１のスリット１１の対向面１ａ側の端部（アール部）ａに突き当て、また、扁平チューブ３Ａの長手方向の端部（端面）を第１のスリット１１の側面１ｂ側の端部（直角部）ｂに突き当てる。   According to such a configuration, when assembling the first row of flat tubes 3A to the header tanks 1 and 2, the end of the first row of flat tubes 3A with respect to the first slits 11 of the header tanks 1 and 2, Inserted from the side (side 1b side) of the header tanks 1 and 2, the end portion (R-shaped portion) in the width direction of the flat tube 3 </ b> A is the end portion (R-shaped portion) a on the facing surface 1 a side of the first slit 11. Further, the end portion (end surface) in the longitudinal direction of the flat tube 3A is abutted against the end portion (right angle portion) b on the side surface 1b side of the first slit 11.

また、ヘッダタンク１、２に２列目の扁平チューブ３Ｂを組み付けるときも同様で、ヘッダタンク１、２の第２のスリット１２に対し、２列目の扁平チューブ３Ｂの端部を、ヘッダタンク１、２の側方（側面１ｃ側）から挿入して、扁平チューブ３Ｂの幅方向の端部（アール部）を第２のスリット１２の対向面１ａ側の端部（アール部）ａ’に突き当て、また、扁平チューブ３Ｂの長手方向の端部（端面）を第２のスリット１２の側面１ｃ側の端部（直角部）ｃに突き当てる。   Similarly, when the second row of flat tubes 3B is assembled to the header tanks 1 and 2, the end of the second row of flat tubes 3B is connected to the header tank 1 with respect to the second slits 12 of the header tanks 1 and 2. Inserted from the side of 1 and 2 (side 1c side), the end portion (R-shaped portion) of the flat tube 3B in the width direction becomes the end portion (R-shaped portion) a 'on the facing surface 1a side of the second slit 12 Also, the end (end surface) in the longitudinal direction of the flat tube 3B is abutted against the end (right angle portion) c on the side surface 1c side of the second slit 12.

従って、扁平チューブ３Ａ、３Ｂの端部をヘッダタンク１、２の側面側からスリット１１、１２に挿入するため、扁平チューブ３Ａ、３Ｂの幅方向端部のアール部がガイドとなり、特別な端末処理を施すことなく、挿入性を確保できる。また、扁平チューブ３Ａ、３Ｂは、幅方向及び長手方向に突き当てられるため、挿入位置も安定させることができる。従って、組み立てを容易化することができる。
尚、ヘッダタンク１と扁平チューブ３Ａ、３Ｂとは、上記のように組み付けた後、挿入部の周囲をろう付けにより接合する。 Therefore, since the end portions of the flat tubes 3A and 3B are inserted into the slits 11 and 12 from the side surfaces of the header tanks 1 and 2, the rounded portions at the end portions in the width direction of the flat tubes 3A and 3B serve as a guide, and special terminal processing is performed. Insertability can be ensured without applying. Moreover, since the flat tubes 3A and 3B are abutted in the width direction and the longitudinal direction, the insertion position can also be stabilized. Therefore, assembly can be facilitated.
The header tank 1 and the flat tubes 3A and 3B are assembled as described above and then joined around the insertion portion by brazing.

図４及び図５はヘッダタンク１、２と扁平チューブ３との組立構造の第２実施形態を示す平面図及び側面図である。また、図６は同上第２実施形態の要部拡大図である。
この第２実施形態（図４〜図６）において、第１実施形態（図２、図３）と同一要素には同一符号と付して説明を簡略化し、異なる要素を中心に主に図６を参照して説明する。 4 and 5 are a plan view and a side view showing a second embodiment of the assembly structure of the header tanks 1 and 2 and the flat tube 3. FIG. 6 is an enlarged view of a main part of the second embodiment.
In the second embodiment (FIGS. 4 to 6), the same elements as those in the first embodiment (FIGS. 2 and 3) are denoted by the same reference numerals, and the description will be simplified. Will be described with reference to FIG.

ヘッダタンク１側の扁平チューブ３との連通部は、対をなす他方のヘッダタンク２との対向面１ａの幅方向中央部側から、幅方向の一方の端部側で前記中央部より対向方向と反対方向に後退する部位（側面１ｂ、又は、対向面１ａと側面１ｂとのつながり部）にかけて形成された第１のスリット１１、及び、前記対向面１ａの幅方向中央部側から、幅方向の他方の端部側で前記中央部より対向方向と反対方向に後退する部位（側面１ｃ、又は、対向面１ａと側面１ｃとのつながり部）にかけて形成された第２のスリット１２とする。尚、本例でも、対向面１ａと側面１ｂ、１ｃとのつながり部は、アール部をなしている。   The communication part with the flat tube 3 on the header tank 1 side is the opposite direction from the central part on one end side in the width direction from the central part side in the width direction of the opposing surface 1a with the other header tank 2 that makes a pair. Width direction from the first slit 11 formed over the portion (side 1b or the connecting portion between the facing surface 1a and the side surface 1b) retreating in the opposite direction to the width direction central portion side of the facing surface 1a The second slit 12 is formed on a portion (side surface 1c or a connecting portion between the facing surface 1a and the side surface 1c) that recedes in the direction opposite to the facing direction from the central portion on the other end side. In this example, the connecting portion between the facing surface 1a and the side surfaces 1b and 1c forms a rounded portion.

この第２の実施形態では、扁平チューブ３Ａ、３Ｂがその長手方向に突き当てられる第１及び第２のスリット１１、１２の側面１ｂ、１ｃ側の端部ｂ、ｃの各外側寄りに、段差（段差壁）を設けて、扁平チューブ１１、１２が幅方向に突き当てられる第３の突当部ｄ、ｅを形成してある。また、前記段差（段差壁）の高さ（第２の突当部ｂ、ｃからの突出高さ）ｈ１は、同方向の対向面１ａの高さｈ２より低くしてある。   In the second embodiment, the flat tubes 3A and 3B are stepped on the outer sides of the end portions b and c on the side surfaces 1b and 1c of the first and second slits 11 and 12 with which the flat tubes 3A and 3B are abutted in the longitudinal direction. (Step wall) is provided to form third abutting portions d and e against which the flat tubes 11 and 12 are abutted in the width direction. Further, the height (projection height from the second abutting portions b and c) h1 of the step (step wall) is lower than the height h2 of the facing surface 1a in the same direction.

従って、ヘッダタンク１（第１のスリット１１）と扁平チューブ３Ａとの関係で説明すると、この第２実施形態では、扁平チューブ３Ａは、第１実施形態と同様、その幅方向には、第１のスリット１１の対向面１ａ側の端部ａの第１の突当部に突き当てられ、長手方向には、第１のスリット１１の側面１ｂ側の端部ｂの第２の突当部に突き当てられる他、
第２実施形態の特徴として、幅方向の反対側では、第３の突当部ｄに突き当てられる。 Therefore, when it demonstrates with the relationship between the header tank 1 (1st slit 11) and the flat tube 3A, in this 2nd Embodiment, the flat tube 3A is 1st in the width direction similarly to 1st Embodiment. Of the slit 11 is abutted against the first abutting portion of the end portion a on the facing surface 1a side, and in the longitudinal direction, the second abutting portion of the end portion b on the side surface 1b side of the first slit 11 Besides being hit,
As a feature of the second embodiment, it is abutted against the third abutting portion d on the opposite side in the width direction.

従って、扁平チューブ３Ａは、第１の突当部ａと第３の突当部ｄとに突き当てられ、言い換えれば、これらの間に挿入されることで、幅方向の位置が規制される。そして、扁平チューブ３Ａは、長手方向には、第２の突当部ｂ、ｃに突き当てられ、挿入長さが規制される。
そして、前記段差の高さｈ１を対向面１ａの高さｈ２より低くすることで、挿入動作は２アクションになるものの、ヘッダタンク１の側方からの扁平チューブ３Ａの挿入を可能にしている。 Therefore, the flat tube 3A is abutted against the first abutting part a and the third abutting part d, in other words, the position in the width direction is regulated by being inserted between them. The flat tube 3A is abutted against the second abutting portions b and c in the longitudinal direction, and the insertion length is restricted.
Then, by making the height h1 of the step lower than the height h2 of the facing surface 1a, the flat tube 3A can be inserted from the side of the header tank 1 although the insertion operation becomes two actions.

すなわち、扁平チューブ３Ａをヘッダタンク１の第１のスリット１１にヘッダタンク１の側方から挿入して、第１の突当部ａに突き当てた後（この状態では長手方向にはｈ２−ｈ１分挿入されている）、扁平チューブ３Ａの長手方向に（更にｈ１分）押込んで、第１突当部ａと第３の突当部ｄとに案内させつつ、扁平チューブ３Ａの端部を第２の突当部ｂに突き当てるようにする。   That is, after the flat tube 3A is inserted into the first slit 11 of the header tank 1 from the side of the header tank 1 and abuts against the first abutting portion a (in this state, h2-h1 in the longitudinal direction). Are pushed in the longitudinal direction of the flat tube 3A (further h1) and guided to the first abutting portion a and the third abutting portion d, and the end of the flat tube 3A is 2 is abutted against the abutting portion b.

このように、更に、第３の突当部ｄ、ｅを有する構成とすることにより、挿入動作は２アクションとなるが、第１の突当部ａ、ａ’と第３の突当部ｄ，ｅとで幅方向両側を規制でき、位置決め状態の保持がより容易となる。   As described above, the structure having the third abutting portions d and e further allows the insertion operation to have two actions, but the first abutting portions a and a ′ and the third abutting portion d. , E can regulate both sides in the width direction, and it becomes easier to maintain the positioning state.

次に、ヘッダタンクと扁平チューブとのより具体的な組立方法について提案する。
図７は第１の具体的組立方法を示している。
工程１では、１列目の扁平チューブ３Ａをその幅方向端部を上側にして治具等を用いて複数配列する。
工程２では、１列目の扁平チューブ３Ａの両端部に、上側から、一対のヘッダタンク１、２の一方の側面にある第１のスリット１１を嵌合させる。このとき、前記第１実施形態の構造では１アクション、前記第２実施形態の構造では２アクションとなる。 Next, a more specific assembling method of the header tank and the flat tube is proposed.
FIG. 7 shows a first specific assembling method.
In step 1, a plurality of flat tubes 3A in the first row are arranged using a jig or the like with the end in the width direction on the upper side.
In step 2, the first slits 11 on one side surface of the pair of header tanks 1 and 2 are fitted into both ends of the flat tube 3A in the first row from above. At this time, the structure of the first embodiment is 1 action, and the structure of the second embodiment is 2 actions.

工程３では、一対のヘッダタンク１、２の他方の側面にある第２のスリット１２に、上側から、２列目の扁平チューブ３Ｂを複数嵌合させる。このときは、最初に一対のヘッダタンク１、２の上端を少し外側に広げ、次いで一対のヘッダタンク１、２の上側の第２のスリット１２に２列目の扁平チューブ３Ｂを嵌合させ、嵌合後に、一対のヘッダタンク１、２の上端を閉じる。これにより、組立が完了し、この後、ろう付けにより接合する。   In step 3, a plurality of flat tubes 3B in the second row are fitted into the second slit 12 on the other side surface of the pair of header tanks 1 and 2 from above. At this time, first widen the upper ends of the pair of header tanks 1 and 2 slightly outward, then fit the second row of flat tubes 3B into the second slits 12 on the upper side of the pair of header tanks 1 and 2, After fitting, the upper ends of the pair of header tanks 1 and 2 are closed. As a result, the assembly is completed, and thereafter, joining is performed by brazing.

図８は第２の具体的組立方法を示している。
工程１では、一対のヘッダタンク１、２をその一方の側面を上側にして治具等を用いて配置する。
工程２では、一対のヘッダタンク１、２の前記一方の側面（上側の側面）にある第１のスリット１１に、１列目の複数の扁平チューブ３Ａの両端部を嵌合する。このとき、前記第１実施形態の構造では１アクション、前記第２実施形態の構造では２アクションとなる。 FIG. 8 shows a second specific assembling method.
In step 1, the pair of header tanks 1 and 2 are arranged using a jig or the like with one side face of the header tanks 1 and 2 facing upward.
In step 2, both ends of the plurality of flat tubes 3A in the first row are fitted into the first slits 11 on the one side surface (upper side surface) of the pair of header tanks 1 and 2. At this time, the structure of the first embodiment is 1 action, and the structure of the second embodiment is 2 actions.

工程３では、嵌合させた一対のヘッダタンク１、２と１列目の扁平チューブ３Ａとを裏返す。
工程４では、一対のヘッダタンク１、２の他方の側面（裏返して上側にきた側面）にある第２のスリット１２に、上側から、２列目の複数の扁平チューブ３Ｂを嵌合する。このときも、最初に一対のヘッダタンク１、２の上端を少し外側に広げ、次いで一対のヘッダタンク１、２の上側の第２のスリット１２に２列目の扁平チューブ３Ｂを嵌合させ、嵌合後に、一対のヘッダタンク１、２の上端を閉じる。これにより、組立が完了し、この後、ろう付けにより接合する。 In step 3, the paired header tanks 1, 2 and the flat tube 3A in the first row are turned over.
In step 4, the plurality of flat tubes 3B in the second row are fitted into the second slit 12 on the other side surface (the side surface turned upside down) of the pair of header tanks 1 and 2 from the upper side. At this time, the upper ends of the pair of header tanks 1 and 2 are first widened slightly outward, and then the second row of flat tubes 3B are fitted into the second slits 12 on the upper side of the pair of header tanks 1 and 2, After fitting, the upper ends of the pair of header tanks 1 and 2 are closed. As a result, the assembly is completed, and thereafter, joining is performed by brazing.

上記第１及び第２の具体的組立方法によれば、ヘッダタンク１、２の側面より扁平チューブ３Ａ、３Ｂを挿入できる利点を活かして、一対のヘッダタンク１、２と２列の扁平チューブ３Ａ、３Ｂとを効率的に組み立てることができる。特に、１列目の扁平チューブ３Ａと２列目の扁平チューブ３Ｂとを同時に挿入する必要がないので、組み立ての自動化も容易となる。   According to the first and second specific assembling methods described above, a pair of header tanks 1 and 2 and two rows of flat tubes 3A are utilized by taking advantage of the ability to insert the flat tubes 3A and 3B from the side surfaces of the header tanks 1 and 2. 3B can be assembled efficiently. In particular, since it is not necessary to insert the flat tube 3A in the first row and the flat tube 3B in the second row at the same time, automation of assembly is facilitated.

図９はヘッダタンク１（又は２）と扁平チューブ３との組立構造の第３実施形態を示す平面図である。また、図１０は同上第３実施形態の組立状態での平面図、図１１は同上第３実施形態での寸法関係を示す平面図、図１２は図１１のＸ矢視図である。
この第３実施形態（図９〜図１２）においても、第１実施形態（図２、図３）と同一要素には同一符号と付して説明を簡略化し、異なる要素を中心に説明する。 FIG. 9 is a plan view showing a third embodiment of the assembly structure of the header tank 1 (or 2) and the flat tube 3. FIG. 10 is a plan view in the assembled state of the third embodiment, FIG. 11 is a plan view showing the dimensional relationship in the third embodiment, and FIG. 12 is a view taken in the direction of the arrow X in FIG.
In the third embodiment (FIGS. 9 to 12) as well, the same elements as those in the first embodiment (FIGS. 2 and 3) are denoted by the same reference numerals, and the description will be simplified.

ヘッダタンク１側の扁平チューブ３（３Ａ、３Ｂ）との連通部は、対をなす他方のヘッダタンクとの対向面１ａの幅方向中央部側から、幅方向の一方の端部側で前記中央部より対向方向と反対方向に後退する部位（対向面１ａと側面１ｂとのつながり部）にかけて形成された第１のスリット１１、及び、前記対向面１ａの幅方向中央部側から、幅方向の他方の端部側で前記中央部より対向方向と反対方向に後退する部位（対向面１ａと側面１ｃとのつながり部）にかけて形成された第２のスリット１２とする。尚、本例では、対向面１ａと側面１ｂ、１ｃとのつながり部は、面取り状の傾斜部１ｄ、１ｅをなしている。   The communication part with the flat tube 3 (3A, 3B) on the header tank 1 side is the center on the one end side in the width direction from the width direction center part side of the facing surface 1a with the other header tank that makes a pair. From the first slit 11 formed over a portion (a connecting portion between the facing surface 1a and the side surface 1b) that recedes in the opposite direction from the facing direction, and the widthwise central portion side of the facing surface 1a, On the other end side, a second slit 12 is formed that extends from the central portion to a portion that retreats in the direction opposite to the facing direction (the connecting portion between the facing surface 1a and the side surface 1c). In this example, connecting portions between the facing surface 1a and the side surfaces 1b and 1c form chamfered inclined portions 1d and 1e.

ここで、前記第１及び第２のスリット１１、１２の前記後退する部位（傾斜部１ｄ、１ｅ）側の端部ｆ、ｇは、前記対向面中央部側の端部ａ、ａ’と平行に設ける。
そして、扁平チューブ３は、長手方向には、前記第１及び第２のスリット１１、１２を貫通して、ヘッダタンク１内の第４の突当部ｈ、ｉに突き当てられるようにする。尚、第４の突当部ｈ、ｉは、仕切壁５の根元部に形成してある。 Here, the end portions f and g of the first and second slits 11 and 12 on the side of the retreating portion (inclined portions 1d and 1e) are parallel to the end portions a and a ′ on the opposing surface central portion side. Provided.
The flat tube 3 penetrates the first and second slits 11 and 12 in the longitudinal direction so as to abut against the fourth abutting portions h and i in the header tank 1. The fourth abutting portions h and i are formed at the base portion of the partition wall 5.

従って、本実施形態では、例えば扁平チューブ３Ａをヘッダタンク１の第１のスリット１１にヘッダタンク１の側方から挿入して、第１の突当部ａに突き当てた後（この状態では長手方向には後述するＤ２分挿入されている）、扁平チューブ３Ａの長手方向に押込んで、第１のスリット１１の長孔（ａ、ｆ間）に挿入し、扁平チューブ３Ａの端部を第４の突当部ｈに突き当てるようにする。扁平チューブ３Ｂの挿入についても同様である。   Therefore, in this embodiment, for example, after the flat tube 3A is inserted into the first slit 11 of the header tank 1 from the side of the header tank 1 and abuts against the first abutting portion a (in this state, the longitudinal tube 3A is long). Is inserted in the longitudinal direction of the flat tube 3A and inserted into the long hole (between a and f) of the first slit 11, and the end of the flat tube 3A is inserted into the fourth portion. It is made to abut against the abutting part h. The same applies to the insertion of the flat tube 3B.

このように構成することにより、挿入動作は２アクションとなるが、第１及び第２のスリット１１、１２の長孔により扁平チューブ３（３Ａ、３Ｂ）の幅方向両側を規制でき、位置決め状態の保持がより容易となる。   By configuring in this way, the insertion operation becomes two actions, but both sides in the width direction of the flat tube 3 (3A, 3B) can be regulated by the long holes of the first and second slits 11, 12, and the positioning state is Holding becomes easier.

ここで、図１１及び図１２を参照し、前記第１及び第２のスリット１１、１２の前記後退する部位（傾斜部１ｄ、１ｅ）側の端部ｆ、ｇのスリット孔方向の前端及び後端については、
前記扁平チューブ３の板厚をＤ１、
前記扁平チューブの前記対向面から、前記前端までの後退方向の距離をＤ２、
前記後端から、前記扁平チューブの端部までの距離をＤ３とすると、
Ｄ２≧Ｄ１、及び、Ｄ３＞０
好ましくは、
Ｄ２＞Ｄ１、及び、Ｄ３＞０
に設定する。 Here, referring to FIG. 11 and FIG. 12, the front and rear ends of the first and second slits 11 and 12 in the slit hole direction of the end portions f and g on the retreating portion (inclined portions 1d and 1e) side. For the edge,
The plate thickness of the flat tube 3 is D1,
The distance in the backward direction from the facing surface of the flat tube to the front end is D2,
If the distance from the rear end to the end of the flat tube is D3,
D2 ≧ D1 and D3> 0
Preferably,
D2> D1 and D3> 0
Set to.

Ｄ２≧Ｄ１、好ましくは、Ｄ２＞Ｄ１とすることにより、ヘッダタンク１の第１及び第２のスリット１１、１２に対し、ヘッダタンク１の側方から、扁平チューブ３（３Ａ、３Ｂ）を挿入する際に、挿入代を大きくとることができ、側方からの挿入が容易となることで、自動化が容易となる。特にヘッダタンク１の板厚が小さい場合に効果がある。
また、Ｄ３＞０とすることにより、ヘッダタンク１内側での扁平チューブ３（３Ａ、３Ｂ）とのろう付け時に、ろう付けのろうが扁平チューブ３（３Ａ、３Ｂ）内に入り込みを防止することができる。チューブ内にろうが入り込むと、冷媒の流れを阻害するようになるからである。 By setting D2 ≧ D1, preferably D2> D1, the flat tubes 3 (3A, 3B) are inserted from the side of the header tank 1 into the first and second slits 11, 12 of the header tank 1. In doing so, the insertion allowance can be increased and automation from the side is facilitated by facilitating insertion from the side. This is particularly effective when the thickness of the header tank 1 is small.
Further, by setting D3> 0, the brazing brazing prevents the brazing brazing from entering the flat tube 3 (3A, 3B) when brazing the flat tube 3 (3A, 3B) inside the header tank 1. Can do. This is because if the wax enters the tube, the refrigerant flow is inhibited.

この第３実施形態についても、前述の第１の具体的組立方法、又は第２の具体的組み立て方法を用いて、同様に組み立てを行うことができる。   The third embodiment can be similarly assembled using the first specific assembling method or the second specific assembling method described above.

尚、図示の実施形態はあくまで本発明を例示するものであり、本発明は、説明した実施形態により直接的に示されるものに加え、特許請求の範囲内で当業者によりなされる各種の改良・変更を包含するものであることは言うまでもない。   The illustrated embodiments are merely examples of the present invention, and the present invention is not limited to those directly described by the described embodiments, and various improvements and modifications made by those skilled in the art within the scope of the claims. Needless to say, it encompasses changes.

１、２ ヘッダタンク
１ａ、２ａ 対向面
１ｂ、２ｂ 側面
１ｃ、２ｃ 側面
ａ、ａ’ 第１の突当部
ｂ、ｃ 第２の突当部
ｄ、ｅ 第３の突当部
ｈ、ｉ 第４の突当部
３、３Ａ、３Ｂ 扁平チューブ
４ コルゲートフィン
５ 仕切壁
６ 第１通路
７ 第２通路
８ 連通孔
１１ 第１のスリット
１２ 第２のスリット 1, 2 Header tank 1a, 2a Opposing surface 1b, 2b Side surface 1c, 2c Side surface a, a ′ First abutting portion b, c Second abutting portion d, e Third abutting portion h, i First 4, abutting portions 3, 3A, 3B flat tube 4 corrugated fin 5 partition wall 6 first passage 7 second passage 8 communication hole 11 first slit 12 second slit

Claims (14)

互いに平行に延びる一対のヘッダタンクと、これら一対のヘッダタンクを連通する互いに平行に２列に並べられた複数の扁平チューブと、を含んで構成される、熱交換器において、
前記ヘッダタンク側の前記扁平チューブとの連通部は、
前記ヘッダタンクのこれと対をなす他方のヘッダタンクとの対向面の幅方向中央部側から、幅方向の一方の端部側で前記中央部より対向方向と反対方向に後退する部位にかけて形成された第１のスリット、
及び、前記対向面の幅方向中央部側から、幅方向の他方の端部側で前記中央部より対向方向と反対方向に後退する部位にかけて形成された第２のスリットであり、
前記扁平チューブの端部は、前記ヘッダタンクの前記第１及び第２のスリットに、前記ヘッダタンクの側面側から挿入可能で、
前記扁平チューブは、その幅方向には、前記第１及び第２のスリットの前記対向面中央部側の端部の第１の突当部に突き当てられることを特徴とする、熱交換器。 In a heat exchanger including a pair of header tanks extending in parallel with each other and a plurality of flat tubes arranged in two rows in parallel with each other to communicate with the pair of header tanks,
The communication part with the flat tube on the header tank side is:
It is formed from the width direction central portion side of the opposite surface of the header tank to the other header tank that forms a pair, to one end portion side in the width direction extending from the central portion to the opposite direction from the opposite direction. The first slit,
And the second slit formed from the width direction center part side of the facing surface to the part retreating in the opposite direction from the center part on the other end side in the width direction,
The end of the flat tube can be inserted into the first and second slits of the header tank from the side of the header tank,
The heat exchanger according to claim 1, wherein the flat tube is abutted against a first abutting portion at an end portion of the first and second slits on the center side of the facing surface in the width direction. 前記後退する部位は、前記ヘッダタンクの側面であることを特徴とする、請求項１記載の熱交換器。   The heat exchanger according to claim 1, wherein the retreating portion is a side surface of the header tank. 前記後退する部位は、前記ヘッダタンクの対向面と側面とのつながり部であることを特徴とする、請求項１記載の熱交換器。   The heat exchanger according to claim 1, wherein the retreating portion is a connection portion between an opposing surface and a side surface of the header tank. 前記つながり部は、アール部をなすことを特徴とする、請求項３記載の熱交換器。   The heat exchanger according to claim 3, wherein the connecting portion forms a rounded portion. 前記つながり部は、面取り状の傾斜部をなすことを特徴とする、請求項３記載の熱交換器。   The heat exchanger according to claim 3, wherein the connecting portion forms a chamfered inclined portion. 前記第１及び第２のスリットの前記後退する部位側の端部は、前記対向面中央部側の端部と直角に設けられ、
前記扁平チューブは、長手方向には、前記第１及び第２のスリットの前記後退する部位側の端部の第２の突当部に突き当てられることを特徴とする、請求項１〜請求項５のいずれか１つに記載の熱交換器。 The end portions of the first and second slits on the retreating portion side are provided at right angles to the end portions on the opposed surface central portion side,
The said flat tube is abutted by the 2nd abutting part of the edge part by the side of the said retreating part of the said 1st and 2nd slit in a longitudinal direction, The Claims 1- Claim characterized by the above-mentioned. The heat exchanger according to any one of 5. 前記扁平チューブがその長手方向に突き当てられる前記第１及び第２のスリットの前記後退する部位側の端部に、段差を設けて、前記扁平チューブが幅方向に突き当てられる第３の突当部を形成し、前記段差の高さは、前記対向面の高さより低くしたことを特徴とする、請求項６記載の熱交換器。   A third abutment in which the flat tube is abutted in the width direction by providing a step at the retreating portion side end portions of the first and second slits where the flat tube is abutted in the longitudinal direction. The heat exchanger according to claim 6, wherein a height of the step is lower than a height of the facing surface. 前記第１及び第２のスリットの前記後退する部位側の端部は、前記対向面中央部側の端部と平行に設けられ、
前記扁平チューブは、長手方向には、前記第１及び第２のスリットを貫通して、前記ヘッダタンク内の第４の突当部に突き当てられることを特徴とする、請求項１、請求項３、請求項４、請求項５のいずれか１つに記載の熱交換器。 The end portions of the first and second slits on the retreating portion side are provided in parallel with the end portions on the opposed surface central portion side,
The said flat tube penetrates the said 1st and 2nd slit in a longitudinal direction, and is abutted by the 4th abutting part in the said header tank, The Claim 1 characterized by the above-mentioned. The heat exchanger according to any one of claims 3, 4, and 5. 前記第１及び第２のスリットの前記後退する部位側の端部のスリット孔方向の前端及び後端について、
前記扁平チューブの板厚をＤ１、
前記扁平チューブの前記対向面から、前記前端までの後退方向の距離をＤ２、
前記後端から、前記扁平チューブの端部までの距離をＤ３とすると、
Ｄ２≧Ｄ１、及び、Ｄ３＞０
に設定したことを特徴とする、請求項８記載の熱交換器。 About the front end and the rear end in the slit hole direction of the end portion on the side of the retreating side of the first and second slits,
The thickness of the flat tube is D1,
The distance in the backward direction from the facing surface of the flat tube to the front end is D2,
If the distance from the rear end to the end of the flat tube is D3,
D2 ≧ D1 and D3> 0
The heat exchanger according to claim 8, wherein the heat exchanger is set as follows. 前記Ｄ１、Ｄ２について、
Ｄ２＞Ｄ１
に設定したことを特徴とする、請求項９記載の熱交換器。 About D1 and D2,
D2> D1
The heat exchanger according to claim 9, wherein the heat exchanger is set as follows. 請求項１〜請求項１０のいずれか１つに記載の熱交換器の組立方法であって、
１列目の扁平チューブをその幅方向端部を上側にして配列する第１工程と、
前記１列目の扁平チューブの両端部に、上側から、一対のヘッダタンクの一方の側面側の第１のスリットを嵌合させる第２工程と、
前記一対のヘッダタンクの他方の側面側の第２のスリットに、上側から、２列目の扁平チューブを嵌合させる第３工程とを含む、熱交換器の組立方法。 It is an assembly method of the heat exchanger as described in any one of Claims 1-10,
A first step of arranging the first row of flat tubes with the end in the width direction facing upward;
A second step of fitting the first slits on one side of the pair of header tanks from above to both ends of the flat tubes in the first row;
And a third step of fitting a second row of flat tubes from above into the second slit on the other side of the pair of header tanks. 前記第３工程では、前記一対のヘッダタンクの第２のスリットに２列目の扁平チューブを嵌合させる前に、前記一対のヘッダタンクの上端を外側に開き、嵌合後に、閉じることを特徴とする、請求項１１記載の熱交換器の組立方法。   In the third step, before the second row of flat tubes are fitted into the second slits of the pair of header tanks, the upper ends of the pair of header tanks are opened to the outside and closed after the fitting. The method for assembling a heat exchanger according to claim 11. 請求項１〜請求項１０のいずれか１つに記載の熱交換器の組立方法であって、
一対のヘッダタンクをその一方の側面を上側にして配置する第１工程と、
前記一対のヘッダタンクの前記一方の側面側の第１のスリットに、１列目の扁平チューブの両端部を嵌合する第２工程と、
嵌合している前記一対のヘッダタンクと前記１列目の扁平チューブとを裏返す第３工程と、
前記一対のヘッダタンクの他方の側面側の第２のスリットに、上側から、２列目の扁平チューブを嵌合する第４工程とを含む、熱交換器の組立方法。 It is an assembly method of the heat exchanger as described in any one of Claims 1-10,
A first step of arranging a pair of header tanks with one side face up;
A second step of fitting both ends of the first row of flat tubes into the first slit on the one side surface of the pair of header tanks;
A third step of turning over the paired header tanks and the flat tubes in the first row;
A method of assembling a heat exchanger, comprising: a fourth step of fitting a second row of flat tubes from above into a second slit on the other side of the pair of header tanks. 前記第４工程では、前記一対のヘッダタンクの第２のスリットに２列目の扁平チューブを嵌合させる前に、前記一対のヘッダタンクの上端を外側に開き、嵌合後に、閉じることを特徴とする、請求項１３記載の熱交換器の組立方法。   In the fourth step, before the second row of flat tubes are fitted into the second slits of the pair of header tanks, the upper ends of the pair of header tanks are opened outward and closed after the fitting. The method for assembling a heat exchanger according to claim 13.
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