JPH08296990A - Manufacture of header pipe of parallel flow type heat exchanger - Google Patents

Manufacture of header pipe of parallel flow type heat exchanger

Info

Publication number
JPH08296990A
JPH08296990A JP11164596A JP11164596A JPH08296990A JP H08296990 A JPH08296990 A JP H08296990A JP 11164596 A JP11164596 A JP 11164596A JP 11164596 A JP11164596 A JP 11164596A JP H08296990 A JPH08296990 A JP H08296990A
Authority
JP
Japan
Prior art keywords
end plate
tank
heat exchanger
header pipe
flow type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11164596A
Other languages
Japanese (ja)
Other versions
JP3026754B2 (en
Inventor
Kunihiko Nishishita
邦彦 西下
Takashi Sugita
隆司 杉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Corp
Original Assignee
Zexel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zexel Corp filed Critical Zexel Corp
Priority to JP8111645A priority Critical patent/JP3026754B2/en
Publication of JPH08296990A publication Critical patent/JPH08296990A/en
Application granted granted Critical
Publication of JP3026754B2 publication Critical patent/JP3026754B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0219Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224Header boxes formed by sealing end plates into covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/053Heat-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
    • F28D1/0535Heat-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
    • F28D1/05366Assemblies of conduits connected to common headers, e.g. core type radiators

Landscapes

  • 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)

Abstract

PURPOSE: To provide the header structure of a heat exchanger which is not affected by the adverse influence by expansion head while maintaining the high pressure resistance of the end plate. CONSTITUTION: The header structure of a parallel flow type heat exchanger comprises many tubes 1 arranged in parallel with each other, and header pipes 4 connected to both the ends of the tubes 1 and split to a tank 7 and an end plate 11 in the tube connecting direction, wherein a holding piece 10 for holding the other of the, tank 7 and the plate 11 from the exterior is formed along the curved surface of the other at the one coupling part of the plate 11.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、ヘッダパイプがチ
ューブ接続方向に二分割されたパラレルフロータイプの
熱交換器のヘッダ構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a header structure of a parallel flow type heat exchanger in which a header pipe is divided into two in the tube connection direction.

【0002】[0002]

【従来の技術】パラレルフロータイプの熱交換器は、多
数の偏平チューブが波状フィンを介して互いに平行に積
層され、これらの偏平チューブの両端にはそれぞれヘッ
ダパイプが接続されている。また、ヘッダパイプとして
は、チューブ接続方向にタンクとエンドプレートとに二
分割されたものが知られており、例えば、(1)実願平
1−17546号や(2)特開平1−114697号に
記載されたものがある。
2. Description of the Related Art In a parallel flow type heat exchanger, a large number of flat tubes are laminated in parallel with each other via corrugated fins, and header pipes are connected to both ends of these flat tubes. Further, as the header pipe, a pipe divided into a tank and an end plate in the tube connecting direction is known. For example, (1) Japanese Patent Application No. 11-17546 and (2) Japanese Patent Application Laid-Open No. 1-114697. There is one described in.

【0003】上記(1)の熱交換器によれば、ヘッダパ
イプのタンクとエンドプレートの双方を外方へ膨出する
曲面に形成し、それぞれの結合部を互いに嵌合すること
により一体に接合される。また、タンク側の結合部がエ
ンドプレート側の結合部の外側に結合され、高圧冷媒に
対する耐圧性の向上を図っている。このようなヘッダパ
イプでは、予めアルゴン溶接で双方の結合部の数箇所
を、点溶接により仮付けした後一体ろう付けが行なわれ
る。
According to the heat exchanger of (1), both the tank of the header pipe and the end plate are formed into curved surfaces that bulge outward, and the respective joint portions are fitted together to integrally join them. To be done. In addition, the tank-side connecting portion is connected to the outside of the end plate-side connecting portion to improve the pressure resistance against the high-pressure refrigerant. In such a header pipe, several parts of both joints are previously brazed by argon welding in advance by spot welding and then integrally brazed.

【0004】上記(2)の熱交換器によれば、二分割さ
れたヘッダパイプのタンクとエンドプレートの結合部が
側方に延在し、互いに面突き当てすることにより接合さ
れる構造となっている。また、エンドプレートの結合部
にはつめ部が突設され、このつめ部をU字状に折曲げて
タンク側の結合部をエンドプレート側の結合部とともに
挟み付けることにより、双方の結合部の接合を確実にし
ており、つめ部で挟み付けた状態で一体ろう付けが行な
われる。
According to the heat exchanger of (2), the connecting portion of the tank and the end plate of the header pipe divided into two extends laterally and is joined by abutting against each other. ing. Further, a claw portion is provided so as to project from the coupling portion of the end plate, and the claw portion is bent in a U shape to sandwich the tank side coupling portion together with the end plate side coupling portion. The joint is ensured, and the brazing is performed in a state of being sandwiched by the claws.

【0005】[0005]

【発明が解決しようとする課題】ところが、上記(1)
においては、エンドプレート側の結合部をタンク側の結
合部の内側に配して結合するので、エンドプレートの補
強には寄与するものの、ろう付けに先立って双方の結合
部が複数の点溶接により仮付けされるので、軸方向の許
容性がなくなり、ろう付け時の熱膨張に伴うタンク又は
エンドプレートの軸方向の変形が抑制されて、双方がね
じれて変形し、双方の結合部間に隙間が生じて確実に接
合されないおそれがある。また、予め点溶接が必要なの
で、外観性が悪く、更に手間がかかり量産性が難しいと
いう問題がある。
However, the above (1)
In the above, since the joint on the end plate side is arranged inside the joint on the tank side to join, it contributes to the reinforcement of the end plate, but both joints are joined by multiple spot welding prior to brazing. Since it is tentatively attached, axial tolerance is lost, axial deformation of the tank or end plate due to thermal expansion during brazing is suppressed, both are twisted and deformed, and there is a gap between both joints. May occur and the joint may not be securely made. In addition, since spot welding is required in advance, there is a problem in that the appearance is poor, and it is troublesome and mass producibility is difficult.

【0006】また、上記(2)においては、双方の結合
部が側方に延在しているので、エンドプレートの補強が
不十分の上、タンク側の結合部をつめ部により挟み付け
る構造となっているので、上記(1)と同様にタンクと
エンドプレートの軸方向の許容性が失なわれ、熱膨張に
よりねじれて変形するおそれがある。また、つめ部をき
ちんとしたU字状に曲げるのが困難であるという問題も
ある。
Further, in the above (2), since both joints extend laterally, the end plate is not sufficiently reinforced, and the joint on the tank side is sandwiched by the claws. Therefore, similarly to the above (1), the axial tolerance of the tank and the end plate is lost, and there is a possibility that the tank and the end plate may be twisted and deformed due to thermal expansion. There is also a problem that it is difficult to bend the claw portion into a proper U shape.

【0007】そこで、本発明は、エンドプレートの高耐
圧性を維持しつつ、膨張熱に伴う悪影響を受けない熱交
換器のヘッダ構造を提供することを目的とする。
Therefore, it is an object of the present invention to provide a header structure of a heat exchanger which maintains the high pressure resistance of the end plate and is not adversely affected by the expansion heat.

【0008】[0008]

【課題を解決するための手段】本発明は、互いに平行に
配列された多数のチューブの両端にそれぞれヘッダパイ
プが接続され、このヘッダパイプがチューブ接続方向に
タンクとエンドプレートに二分割されたパラレルフロー
タイプの熱交換器において、前記タンクとエンドプレー
トの一方の結合部に、エンドプレートとタンクの他方を
外方から保持する保持片を他方の曲面に沿わせて曲成し
た構成の熱交換器のヘッダ構造である。
According to the present invention, a header pipe is connected to both ends of a large number of tubes arranged in parallel with each other, and the header pipe is divided into a tank and an end plate in a parallel direction. In a flow type heat exchanger, a heat exchanger having a structure in which a holding piece for holding the other end plate and the tank from the outside is bent along one curved portion of the other end of the joining portion between the tank and the end plate. Is a header structure of.

【0009】ヘッダパイプを組付ける際には、タンクの
結合部の内側にエンドプレートの結合部を配し、保持片
によりエンドプレートとタンクの一方の外周面に当接
し、相手方を外方から保持した状態で組付けられる。
When assembling the header pipe, the end plate connecting portion is arranged inside the tank connecting portion, and the holding plate abuts against one outer peripheral surface of the end plate and the tank to hold the other side from the outside. It will be installed in the assembled state.

【0010】したがって、エンドプレートの高耐圧性が
保持されるとともに、保持片により相手方の外周面が接
合方向に保持された状態であるため、ろう付け時には熱
膨張に伴う変形が許容され、タンク又はエンドプレート
がねじれ変形を生ずることがなく、双方の結合部の確実
なる結合を可能とすることができる。
Therefore, since the end plate has a high pressure resistance and the holding piece holds the outer peripheral surface of the other side in the joining direction, deformation due to thermal expansion is allowed during brazing, and the tank or The end plate is not twisted and deformed, and it is possible to reliably connect the both connecting portions.

【0011】[0011]

【発明の実施の形態】以下に本発明の一具体例を図面に
基づいて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of the present invention will be described below with reference to the drawings.

【0012】本具体例の熱交換器1は、図3に示すよう
に、多数の偏平チューブ2が波状フィン3を介して互い
に平行に積層され、これらの偏平チューブ2の双方の端
部にはヘッダパイプ4がそれぞれ接続されたパラレルフ
ロータイプに構成されている。一方のヘッダパイプ4の
上端側には入口継手5が、他方のヘッダパイプ4の下端
側には出口継手6が接続され、双方のヘッダパイプ4内
には仕切板が設けられ、双方の継手5と6との間で冷媒
流路が複数回蛇行する複数パス構造となっている。
As shown in FIG. 3, in the heat exchanger 1 of this specific example, a large number of flat tubes 2 are laminated in parallel with each other via corrugated fins 3, and both end portions of these flat tubes 2 are arranged. The header pipes 4 are connected to each other to form a parallel flow type. An inlet joint 5 is connected to the upper end side of one header pipe 4 and an outlet joint 6 is connected to the lower end side of the other header pipe 4, and a partition plate is provided in both header pipes 4 to connect both joints 5. The structure has a multi-pass structure in which the refrigerant passage meanders a plurality of times.

【0013】上記ヘッダパイプ4は、図1及び図2に示
すように、タンク7とエンドプレート11とにチューブ
接続方向へ二分割された構造であり、エンドプレート1
1にチューブ挿入孔13が設けられている。タンク7と
エンドプレート11はともに外方に膨出した曲面に形成
され、横断面が略楕円形状に構成されている。本具体例
では、耐圧性を高めるために、タンク曲面の曲率半径が
エンドプレートに対し大きく形成されている。また、タ
ンク7とエンドプレート11の両端部には軸方向に沿う
平板状の結合部8、12が形成されている。タンク7の
結合部8は、一旦側方に向った後エンドプレート11側
に屈曲し内側に段部9が形成され、この段部9にエンド
プレート11側の結合部12の先端面が当接した状態で
接合され、これにより位置決めが可能となり組付け性の
向上を図っている。尚、図中14はヘッダパイプ4の上
下開口を閉塞する盲キャップである。
As shown in FIGS. 1 and 2, the header pipe 4 has a structure in which a tank 7 and an end plate 11 are divided into two parts in the tube connecting direction.
1 is provided with a tube insertion hole 13. Both the tank 7 and the end plate 11 are formed in a curved surface that bulges outward and have a substantially elliptical cross section. In this specific example, the radius of curvature of the curved surface of the tank is formed larger than that of the end plate in order to increase the pressure resistance. Further, flat plate-shaped coupling portions 8 and 12 are formed at both ends of the tank 7 and the end plate 11 along the axial direction. The joint portion 8 of the tank 7 is bent laterally and then bent toward the end plate 11 to form a step portion 9 inside, and the tip surface of the joint portion 12 on the end plate 11 side abuts on this step portion 9. They are joined together in this state, which enables positioning and improves assembly. Reference numeral 14 in the figure denotes a blind cap that closes the upper and lower openings of the header pipe 4.

【0014】更に、タンク側の双方の結合部8にはそれ
ぞれ複数の保持片10が等間隔に突設されている。本具
体例では、例えば60cm間隔で6箇所に設けられてい
る。尚、個数としては、この他30cm間隔で10箇所
や、90cm間隔で4箇所でもよく、適宜設けてもよ
い。そして、タンク7とエンドプレート11の結合後、
これらの保持片10は、図2中の二点鎖線で示す状態か
ら実線で示す状態へとカシメ加工によりエンドプレート
11の局面状の外周面に沿って当接される。したがっ
て、これらの保持片10により、エンドプレート11が
タンク7側へ向けて押し付けられた状態で組付けられ
る。この結果ろう付け時には熱膨張に伴ってタンク7と
エンドプレート11の双方が互いに軸方向に移動が許容
されることになり、ねじれ変形が発生せず、エンドプレ
ート側結合部12の先端面とタンク側結合部8の段部9
との間に隙間を生ずることなく、確実なる一体ろう付け
が可能となる。また、ろう付けに先立って点溶接が不要
となり、外観性が損なわれることもなく、手間がかから
ず量産性に対応できる。この上、ろう付けにより各保持
片がエンドプレートに一体接合されるので、更にパイプ
の耐圧性が向上する。
Further, a plurality of holding pieces 10 are provided at equal intervals on both of the joining portions 8 on the tank side. In this specific example, they are provided at six places at intervals of 60 cm, for example. In addition, the number may be 10 at 30 cm intervals, 4 at 90 cm intervals, or may be appropriately set. Then, after joining the tank 7 and the end plate 11,
These holding pieces 10 are brought into contact with each other along the curved outer peripheral surface of the end plate 11 by caulking from the state shown by the chain double-dashed line in FIG. 2 to the state shown by the solid line. Therefore, by these holding pieces 10, the end plate 11 is assembled in a state of being pressed toward the tank 7 side. As a result, at the time of brazing, both the tank 7 and the end plate 11 are allowed to move in the axial direction with each other due to thermal expansion, no twisting deformation occurs, and the tip surface of the end plate side coupling portion 12 and the tank Step portion 9 of the side coupling portion 8
It is possible to perform reliable integral brazing without forming a gap between and. Moreover, spot welding is not required prior to brazing, appearance is not impaired, and mass productivity can be accommodated with no effort. Furthermore, since each holding piece is integrally joined to the end plate by brazing, the pressure resistance of the pipe is further improved.

【0015】次に本発明の他の具体例について説明す
る。
Next, another embodiment of the present invention will be described.

【0016】本具体例では、図4ないし図6に示すよう
に、エンドプレート11の両結合部12に保持片10を
複数個設けた構成である。図6に示すようにタンク7の
保持片10と対応する箇所には、保持片10を通す挿通
孔16がそれぞれ設けられている。これらの挿通孔16
は、保持片10の幅よりも軸方向に大きい寸法で形成さ
れ、タンク7とエンドプレート11の熱膨張に伴う相互
の軸方向の変形を許容できる構成となっている。
In this embodiment, as shown in FIGS. 4 to 6, a plurality of holding pieces 10 are provided on both joint portions 12 of the end plate 11. As shown in FIG. 6, insertion holes 16 through which the holding pieces 10 are inserted are provided at positions corresponding to the holding pieces 10 of the tank 7. These insertion holes 16
Is formed in a size larger in the axial direction than the width of the holding piece 10, and is configured to allow mutual deformation in the axial direction due to thermal expansion of the tank 7 and the end plate 11.

【0017】そして、本具体例では、各保持片10をそ
れぞれ挿通孔16から通してカシメ加工によりタンク7
の外周面に当接すると、上記同様タンク7がエンドプレ
ート側へ押付けられることになり、上記同様の効果が得
られる。
In this embodiment, the holding pieces 10 are inserted through the insertion holes 16 and caulked to form the tank 7.
When it comes into contact with the outer peripheral surface of the tank, the tank 7 is pressed to the end plate side as described above, and the same effect as described above is obtained.

【0018】尚、上述した各具体例では、保持片をタン
クかエンドプレートのどちらか一方に設けたが、これに
限らず、双方に設けるようにしてもよい。
In each of the specific examples described above, the holding piece is provided on either the tank or the end plate, but the present invention is not limited to this and may be provided on both sides.

【0019】[0019]

【発明の効果】以上説明したように、本発明によれば、
保持片により相手方を外方から保持する構造としたの
で、エンドプレートの耐圧性能を向上することができる
とともに、ろう付け時の熱膨張に伴うタンクとエンドプ
レートの軸方向の変形が許容され、双方の結合部間に隙
間など発生せず、確実なる接合が可能となる。また、従
来のような点溶接が不要となり、外観性が良好となると
ともに、点溶接工程削減に伴なって量産性を高めること
が可能となる。
As described above, according to the present invention,
Since the other side is held by the holding piece from the outside, the pressure resistance of the end plate can be improved, and the axial deformation of the tank and the end plate due to thermal expansion during brazing is allowed. No gaps are generated between the joint portions of and reliable joining is possible. In addition, the conventional spot welding becomes unnecessary, the appearance is improved, and the mass productivity can be improved as the spot welding process is reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】 ヘッダパイプの正面図である。FIG. 1 is a front view of a header pipe.

【図2】 図1中のII−II矢視断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.

【図3】 熱交換器の正面図である。FIG. 3 is a front view of a heat exchanger.

【図4】 ヘッダパイプの要部を示す正面図である。FIG. 4 is a front view showing a main part of a header pipe.

【図5】 図4中のV−V矢視断面図である。5 is a cross-sectional view taken along the line VV in FIG.

【図6】 図5中のIV−IV矢視断面図である。6 is a sectional view taken along the line IV-IV in FIG.

【符号の説明】[Explanation of symbols]

1 熱交換器 2 チューブ 4 ヘッダパイプ 7 タンク8 10 保持片 11 エンドプレート 12 結合部 1 heat exchanger 2 tube 4 header pipe 7 tank 8 10 holding piece 11 end plate 12 coupling part

【手続補正書】[Procedure amendment]

【提出日】平成8年5月27日[Submission date] May 27, 1996

【手続補正2】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】全文[Correction target item name] Full text

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【書類名】 明細書[Document name] Statement

【発明の名称】 パラレルフロータイプ熱交換器の
ヘッダパイプの製造方法
Title: Method for manufacturing header pipe of parallel flow type heat exchanger

【特許請求の範囲】[Claims]

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、タンクとエンドプ
レートに二分割されるとともに、互いに平行に配列され
た多数のチューブの両端が前記それぞれのエンドプレー
トに接続され、エンドプレートの結合部をタンクの結合
部の内側に配して一体的に接合されるパラレルフロータ
イプ熱交換器のヘッダパイプの製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is divided into a tank and an end plate, and both ends of a large number of tubes arranged in parallel with each other are connected to the respective end plates, and the joint portion of the end plate is connected to the tank. The present invention relates to a method for manufacturing a header pipe of a parallel flow type heat exchanger, which is arranged inside a joint part and integrally joined.

【0002】[0002]

【従来の技術】パラレルフロータイプの熱交換器は、多
数の偏平チューブが波状フィンを介して互いに平行に積
層され、これらの偏平チューブの両端にはそれぞれヘッ
ダパイプが接続されている。また、ヘッダパイプとして
は、チューブ接続方向にタンクとエンドプレートとに二
分割されたものが知られており、例えば、(1)実願平
1−17546号や(2)特開平1−114697号に
記載されたものがある。
2. Description of the Related Art In a parallel flow type heat exchanger, a large number of flat tubes are laminated in parallel with each other via corrugated fins, and header pipes are connected to both ends of these flat tubes. Further, as the header pipe, a pipe divided into a tank and an end plate in the tube connecting direction is known. For example, (1) Japanese Patent Application No. 11-17546 and (2) Japanese Patent Application Laid-Open No. 1-114697. There is one described in.

【0003】前記(1)の熱交換器によれば、ヘッダパ
イプのタンクとエンドプレートの双方を外方へ膨出する
曲面に形成し、それぞれの結合部を互いに嵌合すること
により一体に接合される。また、タンク側の結合部がエ
ンドプレート側の結合部の外側に結合され、高圧冷媒に
対する耐圧性の向上を図っている。このようなヘッダパ
イプでは、予めアルゴン溶接で双方の結合部の数箇所
を、点溶接により仮付けした後一体ろう付けが行われ
る。
According to the heat exchanger of (1), both the tank of the header pipe and the end plate are formed into curved surfaces that bulge outward, and the respective joint portions are fitted together to integrally join them. To be done. In addition, the tank-side connecting portion is connected to the outside of the end plate-side connecting portion to improve the pressure resistance against the high-pressure refrigerant. In such a header pipe, several parts of both joints are preliminarily brazed by argon welding and then integrally brazed.

【0004】前記(2)の熱交換器によれば、二分割さ
れたヘッダパイプのタンクとエンドプレートの結合部が
側方に延在し、互いに面突き当てすることにより接合さ
れる構造となっている。また、エンドプレートの結合部
にはつめ部が突設され、このつめ部をU字状に折曲げて
タンク側の結合部をエンドプレート側の結合部とともに
挟み付けることにより、双方の結合部の接合を確実にし
ており、つめ部で挟み付けた状態で一体ろう付けが行わ
れる。
According to the heat exchanger of (2), the joint portion between the tank and the end plate of the header pipe divided into two extends laterally and is joined by abutting against each other. ing. Further, a claw portion is provided so as to project from the coupling portion of the end plate, and the claw portion is bent in a U shape to sandwich the tank side coupling portion together with the end plate side coupling portion. The joint is secured, and brazing is performed in a state of being sandwiched by the claws.

【0005】[0005]

【発明が解決しようとする課題】ところが、前記(1)
においては、エンドプレート側の結合部をタンク側の結
合部の内側に配して結合するので、エンドプレートの補
強には寄与するものの、ろう付けに先立って双方の結合
部が複数の点溶接により仮付けされるので軸方向の移動
の許容性がなくなり、ろう付け時の熱膨張に伴うタンク
又はエンドプレートの軸方向の変形が抑制されて、双方
がねじれて変形し、双方の結合部間に隙間が生じて確実
に接合されない虞がある。また、予め点溶接が必要なの
で、外観性が悪く、更に手間がかかり量産性が難しいと
いう問題がある。
However, the above (1)
In the above, since the joint on the end plate side is arranged inside the joint on the tank side to join, it contributes to the reinforcement of the end plate, but both joints are joined by multiple spot welding prior to brazing. Since it is temporarily attached, it does not allow axial movement, and axial deformation of the tank or end plate due to thermal expansion during brazing is suppressed, and both are twisted and deformed, and between both joints. There is a possibility that a gap may be generated and the joining may not be ensured. In addition, since spot welding is required in advance, there is a problem in that the appearance is poor, and it is troublesome and mass producibility is difficult.

【0006】また、前記(2)においては、双方の結合
部が側方に延在しているので、エンドプレートの補強が
不十分であり、更に、タンク側の結合部をつめ部により
挟み付ける構造となっているので、前記(1)と同様に
タンクとエンドプレートの軸方向の許容性が失われ、熱
膨張によりねじれて変形するおそれがある。また、つめ
部をきちんとしたU字状に曲げるのが困難であるという
問題もある。
Further, in the above (2), since both joints extend laterally, the reinforcement of the end plate is insufficient, and further, the joint on the tank side is sandwiched by the claws. Since the structure is adopted, the allowance in the axial direction of the tank and the end plate is lost as in the case of (1), and there is a risk that the tank and the end plate are twisted and deformed due to thermal expansion. There is also a problem that it is difficult to bend the claw portion into a proper U shape.

【0007】そこで、本発明は、エンドプレートの高耐
圧性を維持しつつ、膨張熱に伴う悪影響を受けないパラ
レルフロータイプ熱交換器のヘッダパイプの製造方法を
提供することを目的とする。
Therefore, it is an object of the present invention to provide a method for manufacturing a header pipe of a parallel flow type heat exchanger which does not suffer from the adverse effects of expansion heat while maintaining the high pressure resistance of the end plate.

【0008】[0008]

【課題を解決するための手段】本発明は、タンクとエン
ドプレートに二分割されるとともに、互いに平行に配列
された多数のチューブの両端が前記それぞれのエンドプ
レートに接続され、エンドプレートの結合部をタンクの
結合部の内側に配して一体的に接合されるパラレルフロ
ータイプ熱交換器のヘッダパイプの製造方法において、
前記タンク及びエンドプレートは、ともに外方に膨出し
た曲面を備えて形成され、前記タンクの結合部は、側方
に屈曲形成されて、内側に段部を備えるとともに外側に
は前記チューブの長手方向に突出する複数の突片状の保
持片を有し、タンクの前記段部にエンドプレートの前記
結合部の先端面を当接させ、その後、タンクの前記保持
片を押圧して、該保持片をエンドプレートの前記曲面に
沿わせて設けた構成のパラレルフロータイプ熱交換器の
ヘッダパイプの製造方法である。
According to the present invention, a tank and an end plate are divided into two parts, and both ends of a large number of tubes arranged in parallel with each other are connected to the respective end plates, and a connecting portion of the end plates is connected. In the manufacturing method of the header pipe of the parallel flow type heat exchanger, which is arranged integrally inside the joint part of the tank and is integrally joined,
The tank and the end plate are both formed to have a curved surface that bulges outward, and the connecting portion of the tank is formed to be bent laterally, has a step portion inside, and has a longitudinal direction of the tube outside. Having a plurality of projecting piece-shaped holding pieces that project in the direction, the tip end surface of the connecting portion of the end plate is brought into contact with the step portion of the tank, and then the holding piece of the tank is pressed to hold the holding portion. It is a method of manufacturing a header pipe of a parallel flow type heat exchanger having a configuration in which a piece is provided along the curved surface of the end plate.

【0009】ヘッダパイプを組付ける際には、タンクの
結合部の内側にエンドプレートの結合部を配し、タンク
の前記段部にエンドプレートの前記結合部の先端面を当
接させ、その後、タンクの保持片を例えばカシメ加工に
よりエンドプレートの外周面に沿わせて当接させ、エン
ドプレートを外方から保持した状態で組付ける。
When assembling the header pipe, the connecting portion of the end plate is arranged inside the connecting portion of the tank, the tip surface of the connecting portion of the end plate is brought into contact with the stepped portion of the tank, and then, The holding piece of the tank is brought into contact along the outer peripheral surface of the end plate by caulking, for example, and the end plate is assembled while being held from the outside.

【0010】従って、エンドプレートの高耐圧性が保持
されるとともに、保持片によりエンドプレートの外周面
が接合方向に保持された状態であるため、ろう付け時に
は熱膨張に伴う軸方向の変形が許容され、タンク又はエ
ンドプレートがねじれ変形を生ずることがなく、双方の
結合部の確実な結合を可能とすることができる。
Therefore, since the end plate has a high withstand pressure and the outer peripheral surface of the end plate is held in the joining direction by the holding piece, axial deformation due to thermal expansion is allowed during brazing. Therefore, the tank or the end plate is not twisted and deformed, and it is possible to reliably connect the both connecting portions.

【0011】また、保持片が始めから曲げられている場
合には長手方向にスライドさせなければならず双方の組
付け性に問題を生じるが、本発明のようにタンクの段部
にエンドプレートの結合部の先端面を当接させ、その
後、タンクの保持片をエンドプレートの外周面に沿わせ
て当接させるので、タンクとエンドプレートを対峙させ
て組付けることができ、双方の組付け性が向上する。
Also, when the holding piece is bent from the beginning, it has to be slid in the longitudinal direction, which causes a problem in the assembling of both, but as in the present invention, the end plate of the end plate is attached to the step portion of the tank. The tip surface of the connecting part is brought into contact, and then the holding piece of the tank is brought into contact along the outer peripheral surface of the end plate, so the tank and the end plate can face each other and can be assembled. Is improved.

【0012】[0012]

【発明の実施の形態】以下に本発明の一具体例を図面に
基づいて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of the present invention will be described below with reference to the drawings.

【0013】本具体例の熱交換器1は、図3に示すよう
に、多数の偏平チューブ2が波状フィン3を介して互い
に平行に積層され、これらの偏平チューブ2の双方の端
部にはヘッダパイプ4がそれぞれ接続されたパラレルフ
ロータイプに構成されている。一方のヘッダパイプ4の
上端側には入口継手5が、他方のヘッダパイプ4の下端
側には出口継手6が接続され、双方のヘッダパイプ4内
には仕切板が設けられ、双方の継手5,6との間で冷媒
流路が複数回蛇行する複数パス構造となっている。
As shown in FIG. 3, in the heat exchanger 1 of this example, a large number of flat tubes 2 are laminated in parallel with each other via corrugated fins 3, and both end portions of these flat tubes 2 are arranged. The header pipes 4 are connected to each other to form a parallel flow type. An inlet joint 5 is connected to the upper end side of one header pipe 4 and an outlet joint 6 is connected to the lower end side of the other header pipe 4, and a partition plate is provided in both header pipes 4 to connect both joints 5. , 6 has a multi-pass structure in which the refrigerant flow path meanders a plurality of times.

【0014】前記ヘッダパイプ4は、図1及び図2に示
すように、タンク7とエンドプレート11とにチューブ
接続方向へ二分割された構造であり、エンドプレート1
1にチューブ挿入孔13が設けられている。タンク7と
エンドプレート11はともに外方に膨出した曲面に形成
され、横断面が略楕円形状に構成されている。本具体例
では、耐圧性を高めるために、タンク曲面の曲率半径が
エンドプレートに対し大きく形成されている。また、タ
ンク7とエンドプレート11の両端部には軸方向に沿う
平板状の結合部8,12が形成されている。タンク7の
結合部8は、一旦側方に向った後エンドプレート11側
に屈曲し内側に段部9が形成され、この段部9にエンド
プレート11側の結合部12の先端面が当接した状態で
接合され、これにより位置決めが可能となり組付け性の
向上を図っている。尚、図中14はヘッダパイプ4の上
下開口を閉塞する盲キャップである。
As shown in FIGS. 1 and 2, the header pipe 4 has a structure in which a tank 7 and an end plate 11 are divided into two parts in the tube connecting direction.
1 is provided with a tube insertion hole 13. Both the tank 7 and the end plate 11 are formed in a curved surface that bulges outward and have a substantially elliptical cross section. In this specific example, the radius of curvature of the curved surface of the tank is formed larger than that of the end plate in order to increase the pressure resistance. Further, flat plate-shaped coupling portions 8 and 12 are formed at both ends of the tank 7 and the end plate 11 along the axial direction. The joint portion 8 of the tank 7 is bent laterally and then bent toward the end plate 11 to form a step portion 9 inside, and the tip surface of the joint portion 12 on the end plate 11 side abuts on this step portion 9. They are joined together in this state, which enables positioning and improves assembly. Reference numeral 14 in the figure denotes a blind cap that closes the upper and lower openings of the header pipe 4.

【0015】更に、タンク側の双方の結合部8にはそれ
ぞれ複数の保持片10が等間隔に突設されている。本具
体例では、例えば60cm間隔で6箇所に設けられてい
る。尚、個数としては、この他30cm間隔で10箇所
や、90cm間隔で4箇所でもよく、適宜設けてもよ
い。そして、タンク7とエンドプレート11の結合後、
これらの保持片10は、図2中の二点鎖線で示す状態か
ら実線で示す状態へとカシメ加工によりエンドプレート
11の曲面状の外周面に沿って当接される。従って、こ
れらの保持片10により、エンドプレート11がタンク
7側へ向けて押し付けられた状態で組付けられる。この
結果ろう付け時には熱膨張に伴ってタンク7とエンドプ
レート11の双方が互いに軸方向に移動が許容されるこ
とになり、ねじれ変形が発生せず、エンドプレート側結
合部12の先端面とタンク側結合部8の段部9との間に
隙間を生ずることなく、確実な一体ろう付けが可能とな
る。また、ろう付けに先立って点溶接が不要となり、外
観性が損われることもなく、手間がかからず量産性に対
応できる。その上、ろう付けにより各保持片がエンドプ
レートに一体接合されるので、更にパイプの耐圧性が向
上する。
Further, a plurality of holding pieces 10 are provided at equal intervals on both of the joining portions 8 on the tank side. In this specific example, they are provided at six places at intervals of 60 cm, for example. In addition, the number may be 10 at 30 cm intervals, 4 at 90 cm intervals, or may be appropriately set. Then, after joining the tank 7 and the end plate 11,
These holding pieces 10 are brought into contact with each other along the curved outer peripheral surface of the end plate 11 by caulking from the state shown by the chain double-dashed line in FIG. 2 to the state shown by the solid line. Therefore, the end plate 11 is assembled in a state of being pressed toward the tank 7 side by these holding pieces 10. As a result, at the time of brazing, both the tank 7 and the end plate 11 are allowed to move in the axial direction with each other due to thermal expansion, no twisting deformation occurs, and the tip surface of the end plate side coupling portion 12 and the tank It is possible to perform reliable integral brazing without forming a gap between the side coupling portion 8 and the step portion 9. Moreover, spot welding is not required prior to brazing, appearance is not impaired, and mass productivity can be accommodated without labor. Moreover, since each holding piece is integrally joined to the end plate by brazing, the pressure resistance of the pipe is further improved.

【0016】[0016]

【発明の効果】以上説明したように、本発明によれば、
保持片によりエンドプレートを外方から保持する構造と
したので、エンドプレートの耐圧性能を向上することが
できるとともに、ろう付け時の熱膨張に伴うタンクとエ
ンドプレートの軸方向の変形が許容され、双方の結合部
間に隙間等が発生せず、確実な接合が可能となる。ま
た、従来のような点溶接が不要となり、外観性が良好と
なるとともに、点溶接工程削減に伴って量産性を高める
ことが可能となる。
As described above, according to the present invention,
Since the holding plate holds the end plate from the outside, the pressure resistance of the end plate can be improved, and the tank and the end plate can be deformed in the axial direction due to thermal expansion during brazing. A gap or the like does not occur between the both joints, and reliable joining is possible. In addition, the conventional spot welding becomes unnecessary, the appearance is improved, and the mass productivity can be improved as the spot welding process is reduced.

【0017】更に、タンクの段部にエンドプレートの結
合部の先端面を当接させ、その後、タンクの保持片をエ
ンドプレートの外周面に沿わせて当接させるので、タン
クとエンドプレートを対峙させて組付けることができ
て、双方の組付け性が向上する。
Further, since the tip end surface of the connecting portion of the end plate is brought into contact with the step portion of the tank, and then the holding piece of the tank is brought into contact with along the outer peripheral surface of the end plate, the tank and the end plate face each other. They can be assembled together, and the assemblability of both sides is improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】 ヘッダパイプの正面図である。FIG. 1 is a front view of a header pipe.

【図2】 図1中のII−II矢視断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.

【図3】 熱交換器の正面図である。FIG. 3 is a front view of a heat exchanger.

【符号の説明】 1 熱交換器 2 チューブ 4 ヘッダパイプ 7 タンク 8 結合部 9 段部 10 保持片 11 エンドプレート 12 結合部[Explanation of Codes] 1 heat exchanger 2 tube 4 header pipe 7 tank 8 joint portion 9 step portion 10 holding piece 11 end plate 12 joint portion

【手続補正3】[Procedure 3]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】図4[Name of item to be corrected] Fig. 4

【補正方法】削除[Correction method] Delete

【手続補正4】[Procedure amendment 4]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】図5[Name of item to be corrected] Figure 5

【補正方法】削除[Correction method] Delete

【手続補正5】[Procedure Amendment 5]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】図6[Name of item to be corrected] Figure 6

【補正方法】削除[Correction method] Delete

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 互いに平行に配列された多数のチューブ
の両端にそれぞれヘッダパイプが接続され、このヘッダ
パイプがチューブ接続方向にタンクとエンドプレートに
二分割されたパラレルフロータイプの熱交換器におい
て、 前記タンクとエンドプレートの一方の結合部に、エンド
プレートとタンクの他方を外方から保持する保持片を他
方の曲面に沿わせて曲成したことを特徴とする熱交換器
のヘッダ構造。
1. A parallel flow type heat exchanger in which a header pipe is connected to both ends of a large number of tubes arranged in parallel with each other, and the header pipe is divided into a tank and an end plate in the tube connection direction. A header structure of a heat exchanger, wherein a holding piece for holding the other of the end plate and the tank from the outside is bent along one curved portion of the other end of the tank and the end plate along the curved surface of the other.
JP8111645A 1996-05-02 1996-05-02 Method of manufacturing header pipe for parallel flow type heat exchanger Expired - Lifetime JP3026754B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8111645A JP3026754B2 (en) 1996-05-02 1996-05-02 Method of manufacturing header pipe for parallel flow type heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8111645A JP3026754B2 (en) 1996-05-02 1996-05-02 Method of manufacturing header pipe for parallel flow type heat exchanger

Publications (2)

Publication Number Publication Date
JPH08296990A true JPH08296990A (en) 1996-11-12
JP3026754B2 JP3026754B2 (en) 2000-03-27

Family

ID=14566576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8111645A Expired - Lifetime JP3026754B2 (en) 1996-05-02 1996-05-02 Method of manufacturing header pipe for parallel flow type heat exchanger

Country Status (1)

Country Link
JP (1) JP3026754B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412162A (en) * 2004-02-23 2005-09-21 Denso Corp Header for a heat exchanger
CN103442821A (en) * 2010-12-07 2013-12-11 法雷奥热系统公司 Assembly of two parts crimped one over the other

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105400A (en) * 1986-10-21 1988-05-10 オースチン・ローヴアー・グループ・リミテッド Heat exchanger and assembling method thereof
JPH01114697A (en) * 1987-10-29 1989-05-08 Nippon Denso Co Ltd Heat exchanger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63105400A (en) * 1986-10-21 1988-05-10 オースチン・ローヴアー・グループ・リミテッド Heat exchanger and assembling method thereof
JPH01114697A (en) * 1987-10-29 1989-05-08 Nippon Denso Co Ltd Heat exchanger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412162A (en) * 2004-02-23 2005-09-21 Denso Corp Header for a heat exchanger
US7210520B2 (en) 2004-02-23 2007-05-01 Denso Corporation Heat exchanger
CN100425937C (en) * 2004-02-23 2008-10-15 株式会社电装 Heat exchanger
GB2412162B (en) * 2004-02-23 2009-01-28 Denso Corp Heat exchanger
CN103442821A (en) * 2010-12-07 2013-12-11 法雷奥热系统公司 Assembly of two parts crimped one over the other

Also Published As

Publication number Publication date
JP3026754B2 (en) 2000-03-27

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