JP2004150673A - Joining structure and joining method for pipe header to flat tube - Google Patents

Joining structure and joining method for pipe header to flat tube Download PDF

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Publication number
JP2004150673A
JP2004150673A JP2002314953A JP2002314953A JP2004150673A JP 2004150673 A JP2004150673 A JP 2004150673A JP 2002314953 A JP2002314953 A JP 2002314953A JP 2002314953 A JP2002314953 A JP 2002314953A JP 2004150673 A JP2004150673 A JP 2004150673A
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Japan
Prior art keywords
flat tube
flat
pipe header
header
pipe
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Pending
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JP2002314953A
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Japanese (ja)
Inventor
Yasushi Yoshino
靖 吉野
Joji Inoue
丈治 井上
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Toyo Radiator Co Ltd
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Toyo Radiator Co Ltd
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Priority to JP2002314953A priority Critical patent/JP2004150673A/en
Publication of JP2004150673A publication Critical patent/JP2004150673A/en
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    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • F28D7/0033—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes the conduits for one medium or the conduits for both media being bent

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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 prevent brazing material from flowing inward from a tip of a multi-hole flat tube in a connection part of the multi-hole flat tube to a pipe header for a heat exchanger. <P>SOLUTION: A contracted part 3a that is longer than thickness of the pipe header 1 is formed at a tip part of the flat tube 3, and a flat hole 2 matching the contracted part 3a is formed in the pipe header 1. As the contracted part 3a is engaged with the flat hole 2, both are brazed and fixed to each other. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、熱交換器として用いるパイプヘッダと主として多穴管からなる偏平チューブとの接合構造および接合方法に関する。
【０００２】
【従来の技術】
従来の偏平チューブ３とパイプヘッダ１との接合構造は、アルミニュームの多穴押出管からなる偏平チューブ３の先端を図４に示す如く、パイプヘッダ１の偏平孔２に嵌着し、その嵌着部をろう付け固定してろう付け部７を形成していた。この偏平孔２は、偏平チューブ３の外周に整合する外側偏平孔と、それより僅かに小なる内側偏平孔とが段付状に形成され、その境にストッパ面２ａが形成されている。そしてそのストッパ面２ａに偏平チューブ３の先端面を当接した状態で、両者間をろう付け固定するものである（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
実開平２−６２２６９号公報（第３図）
【０００４】
【発明が解決しようとする課題】
図４に示すパイプヘッダと偏平チューブとの接合構造は、偏平チューブ３とパイプヘッダ１の偏平孔２との間をろう付けする際に、偏平チューブ３の先端から内部にろう材が浸入し、その開口を狭めたり閉塞したりするおそれがあり、それによりパイプヘッダ１と偏平チューブ３との間の流体の流通が円滑に行われない欠点があった。
【０００５】
次に、図５の如く、夫々パイプヘッダ１を有する複数の偏平チューブ３を並列すると共に、その外面を互いに接触した熱交換器を製作するには、各パイプヘッダ１と偏平チューブ３との接触部間にろう材を位置すると共に、各偏平チューブ３の平坦面間にろう材を位置し、全体を高温の炉内に挿入して一体にろう付け固定していた。このとき下側に位置する偏平チューブ３の先端部が下方に断面Ｌ字状に折れ曲がる場合には、その下側に折れ曲がった偏平チューブ３に沿ってろう材が流下し、偏平チューブ３の開口からより多くのろう材が内部に浸入し、その開口を閉塞するおそれがある。
そこで本発明は、このようなろう付けに伴う問題点を解決することを課題とする。
【０００６】
【課題を解決するための手段】
請求項１に記載の本発明は、パイプヘッダ（１） の外周に、その軸線方向に沿って偏平孔（２） を形成し、その偏平孔（２） に偏平チューブ（３） の端部を嵌着して、その嵌着部をろう付けしてなるパイプヘッダと偏平チューブとの接合構造において、
前記偏平チューブ（３） の先端部外周を、その断面の長径および短径の少なくとも一方が縮小するように加工して、そこに縮小加工部（３ａ）が形成されると共に、その縮小加工部（３ａ）の長さが、前記ヘッダパイプ（１） の厚みを越えるように形成され且つ、その縮小加工部（３ａ）とそれ以外の部分との境に位置決め用の段付き部（３ｂ）が形成され、
前記偏平孔（２） の内周が、前記偏平チューブ（３） の先端部外周に整合するように形成されたことを特徴とするパイプヘッダと偏平チューブとの接合構造である。
【０００７】
請求項２に記載の本発明は、請求項１の接合構造を製造する方法において、
前記ろう付けの際に、前記偏平チューブ（３） の少なくとも先端部が水平または上方に向くように配置し、その偏平チューブ（３） の前記縮小加工部（３ａ）を前記パイプヘッダ（１） の前記偏平孔（２） に嵌着してろう付け接合することとしたパイプヘッダと偏平チューブとの接合方法である。
【０００８】
請求項３に記載の本発明は、請求項２において、
複数の偏平チューブ（３） を並列させ、夫々の偏平チューブ（３） の両端部を水平または上方に向くように配置し、夫々の偏平チューブ（３） の両端にパイプヘッダ（１） の偏平孔（２） を嵌着してろう付け接合することとしたパイプヘッダと偏平チューブとの接合方法である。
【０００９】
【発明の実施の形態】
次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本発明のパイプヘッダと偏平チューブとの接合構造の要部横断面図であり、図２はその分解斜視図である。
この接合構造は図１および図２に示す如く、偏平チューブ３の両端（右側を省略）を切削、プレス、引延し、あるいは切り起こし等により縮小して縮小加工部３ａを形成し、それとチューブ本体との境目に段付き部３ｂが形成されたものである。
【００１０】
プレス加工の場合には、偏平チューブ３の厚み方向（断面の短径方向）が縮小し、それに直交する幅方向が僅かに膨出する。引延しによる場合には、偏平チューブ３の厚み方向および幅方向共に縮小する。また、切り起こしの場合には、図６の如く、偏平チューブの先端から同一厚みでチューブ外面を切り起こすものである。これらの場合、夫々の外周形状に整合させて、パイプヘッダの偏平孔の内周を形成すればよい。なお、縮小加工部３ａは、偏平チューブ３の断面の長径方向の両端部のみに形成してもよい。
次に、縮小加工部３ａの長さＡは、図１に示す如く、パイプヘッダ１の厚みＢよりも僅かに長く形成されている。
【００１１】
次に、パイプヘッダ１にはその軸線に平行に偏平孔２が形成される。この偏平孔２の内周は、縮小加工部３ａに整合する。そしてこの例では、パイプヘッダ１の軸線方向の両端に端蓋４が取付けられると共に、一方の端蓋４に出入口パイプ５が貫通固定されている。そして偏平チューブ３の両端を一対のパイプヘッダ１（右側省略）の偏平孔２に嵌着すると共に、パイプヘッダ１の両開口端に端蓋４を配置する。そして各接続部に予めろう材を被覆または配置しておき、それを溶融し、次いで固化すことにより接続部にろう付け部７を形成する。
【００１２】
このとき、縮小加工部３ａの先端はパイプヘッダ１の偏平孔２よりも内部に僅かに突出しているため、ろう材は縮小加工部３ａの先端の外周とパイプヘッダ１の内面との間に保持され、縮小加工部３ａの先端からそれが内部に流入することがない。従って、偏平チューブ３の開口端にはろう材が浸入することがなく、流体の流通が円滑に行われる。
【００１３】
次に、図３はこのような接続構造を有する３つの熱交換器の要素を、互いにその偏平チューブ３の平坦部で接合し、各偏平チューブ３に異なる流体を流通させそれらの間に熱交換を行うものである。この場合、夫々の偏平チューブ３の先端部は水平または上方にＬ字状に曲折した状態で、パイプヘッダ１の偏平孔２に偏平チューブ３の各縮小加工部３ａが嵌着し、各部品の接触部間が高温の炉内で一体にろう付け固定されるものである。
このとき各偏平チューブ３の端部は、水平もしくは上方にＬ字状に折れ曲がっているため、ろう材が溶融しても偏平チューブ３の開口端から内部に浸入することがない。そのため、開口をろう材が閉塞するおそれがない。
【００１４】
【発明の作用・効果】
本発明の接合構造は、偏平チューブ３の先端部外周が偏平孔２の内周に整合すると共に、偏平チューブ３の先端部外周がそのパイプヘッダ１の厚みを越える長さの縮小加工部３ａが形成され、その根元に位置決め用の段付き部３ｂが形成されているから、
偏平チューブ３の縮小加工部３ａをパイプヘッダ１の偏平孔２に嵌着することにより、縮小加工部３ａと偏平孔２との間をろう付けする際に、縮小加工部３ａの先端がパイプヘッダ１内に突出される。そのため、ろう材が偏平チューブ３の先端から内部に流入することを防止できる。それにより偏平チューブ３の開口を広く確保して、流体の流通を円滑に行い得る。
【００１５】
上記構成において、偏平チューブ３の少なくとも先端部が水平または上方に向くように配置し、偏平チューブ３の先端にパイプヘッダ１を嵌着してろう付け接合する場合には、偏平チューブ３の先端からろう材が流入することを確実に防止できる。
【００１６】
上記構成において、複数の偏平チューブ３を並列させ、夫々の偏平チューブ３の両端部を水平または上方に向くように配置し、夫々の偏平チューブ３の両端にパイプヘッダ１を嵌着してろう付け接合する場合には、複数の偏平チューブ３の全てにおいて、ろう付け時に偏平チューブ３の先端からろう材が内部に流入することを防止できる。
【図面の簡単な説明】
【図１】本発明のパイプヘッダと偏平チューブとの接合構造の要部横断面図。
【図２】同接合構造の分解斜視図。
【図３】本発明の接合構造を有する熱交換器の一部分解斜視図。
【図４】従来型パイプヘッダと偏平チューブとの接合構造の要部横断面図。
【図５】同接合構造を有する従来型熱交換器の要部斜視図。
【図６】本発明の他の接合構造に用いられる偏平チューブの要部断面図。
【符号の説明】
１ パイプヘッダ
２ 偏平孔
２ａ ストッパ面
３ 偏平チューブ
３ａ 縮小加工部
３ｂ 段付き部
４ 端蓋
５ 出入口パイプ
６ 仕切部
７ ろう付け部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a joining structure and a joining method for a pipe header used as a heat exchanger and a flat tube mainly composed of a multi-hole tube.
[0002]
[Prior art]
A conventional joint structure between a flat tube 3 and a pipe header 1 is such that the tip of a flat tube 3 made of an aluminum multi-hole extruded tube is fitted into a flat hole 2 of a pipe header 1 as shown in FIG. The brazing portion 7 is formed by brazing and fixing the attachment portion. The flat hole 2 has an outer flat hole aligned with the outer periphery of the flat tube 3 and an inner flat hole slightly smaller than the outer flat hole in a stepped shape, and a stopper surface 2a is formed at the boundary. Then, in a state where the distal end surface of the flat tube 3 is in contact with the stopper surface 2a, the two are brazed and fixed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2-62269 (FIG. 3)
[0004]
[Problems to be solved by the invention]
In the joint structure between the pipe header and the flat tube shown in FIG. 4, when brazing between the flat tube 3 and the flat hole 2 of the pipe header 1, the brazing material penetrates into the inside from the tip of the flat tube 3, There is a possibility that the opening may be narrowed or closed, which causes a drawback that the fluid does not flow smoothly between the pipe header 1 and the flat tube 3.
[0005]
Next, as shown in FIG. 5, in order to manufacture a heat exchanger in which a plurality of flat tubes 3 each having a pipe header 1 are arranged in parallel and the outer surfaces thereof are in contact with each other, the contact between each pipe header 1 and the flat tube 3 is required. The brazing material was located between the flat tubes 3 and the flat surface of each flat tube 3, and the whole was inserted into a high-temperature furnace and fixed integrally by brazing. At this time, when the distal end of the flat tube 3 located on the lower side is bent downward in an L-shaped cross section, the brazing material flows down along the flat tube 3 bent on the lower side, and from the opening of the flat tube 3. There is a risk that more brazing material will penetrate into the interior and block its opening.
Then, this invention makes it a subject to solve the problem accompanying such brazing.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, a flat hole (2) is formed in the outer periphery of the pipe header (1) along the axial direction thereof, and the end of the flat tube (3) is formed in the flat hole (2). In the joint structure between the flat tube and the pipe header formed by fitting and brazing the fitting portion,
The outer periphery of the distal end portion of the flat tube (3) is processed so that at least one of the major axis and the minor axis of the cross section thereof is reduced, and a reduced processing portion (3a) is formed there, and the reduced processing portion (3a) is formed. 3a) The length of the header pipe (1) is formed so as to exceed the thickness of the header pipe (1), and a stepped portion (3b) for positioning is formed at the boundary between the reduced portion (3a) and the other portion. And
A joint structure between a pipe header and a flat tube, wherein an inner periphery of the flat hole (2) is formed so as to match an outer periphery of a distal end portion of the flat tube (3).
[0007]
According to a second aspect of the present invention, there is provided a method for manufacturing a joint structure according to the first aspect,
At the time of the brazing, the flat tube (3) is arranged so that at least a tip portion thereof is directed horizontally or upward, and the reduced portion (3a) of the flat tube (3) is attached to the pipe header (1). This is a method for joining a pipe header and a flat tube to be fitted into the flat hole (2) and brazed.
[0008]
The present invention described in claim 3 is the invention according to claim 2,
A plurality of flat tubes (3) are arranged side by side, and both ends of each flat tube (3) are arranged so as to face horizontally or upward, and flat holes of the pipe header (1) are provided at both ends of each flat tube (3). (2) This is a method of joining a pipe header and a flat tube, which is to be fitted and brazed.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a main part of a joint structure between a pipe header and a flat tube according to the present invention, and FIG. 2 is an exploded perspective view thereof.
As shown in FIGS. 1 and 2, this joint structure reduces the both ends (not shown on the right side) of the flat tube 3 by cutting, pressing, stretching, or cutting and raising to form a reduced processed portion 3a. A stepped portion 3b is formed at a boundary with the main body.
[0010]
In the case of press working, the thickness direction of the flat tube 3 (the direction of the minor axis of the cross section) is reduced, and the width direction orthogonal thereto is slightly expanded. In the case of stretching, the flat tube 3 is reduced in both the thickness direction and the width direction. In the case of cutting and raising, as shown in FIG. 6, the outer surface of the tube is cut with the same thickness from the tip of the flat tube. In these cases, the inner periphery of the flat hole of the pipe header may be formed in conformity with the respective outer peripheral shapes. In addition, you may form the reduction process part 3a only in the longitudinal direction both ends of the cross section of the flat tube 3. FIG.
Next, as shown in FIG. 1, the length A of the reduced processing portion 3 a is formed slightly longer than the thickness B of the pipe header 1.
[0011]
Next, a flat hole 2 is formed in the pipe header 1 in parallel with its axis. The inner circumference of the flat hole 2 is aligned with the reduced processing portion 3a. In this example, end covers 4 are attached to both ends of the pipe header 1 in the axial direction, and an entrance / exit pipe 5 is fixed to one end cover 4. Then, both ends of the flat tube 3 are fitted into the flat holes 2 of the pair of pipe headers 1 (omitted on the right side), and the end covers 4 are arranged at both open ends of the pipe header 1. Then, a brazing material is coated or arranged on each connection portion in advance, and is melted and then solidified to form a brazing portion 7 at the connection portion.
[0012]
At this time, the leading end of the reduced portion 3a slightly projects into the flat hole 2 of the pipe header 1 so that the brazing material is held between the outer periphery of the leading end of the reduced portion 3a and the inner surface of the pipe header 1. Therefore, it does not flow into the inside from the tip of the reduced processing portion 3a. Therefore, the brazing material does not enter the open end of the flat tube 3 and the fluid can flow smoothly.
[0013]
Next, FIG. 3 shows that the elements of the three heat exchangers having such a connection structure are joined to each other at the flat portions of the flat tubes 3, and different fluids are passed through the flat tubes 3 to exchange heat between them. Is what you do. In this case, the respective reduced processing portions 3a of the flat tubes 3 are fitted into the flat holes 2 of the pipe header 1 in a state where the distal end portions of the respective flat tubes 3 are bent horizontally or upward in an L-shape. The contact portions are integrally brazed and fixed in a high-temperature furnace.
At this time, since the end of each flat tube 3 is bent horizontally or upward in an L-shape, even if the brazing material is melted, the flat tube 3 does not enter the inside from the open end of the flat tube 3. Therefore, there is no possibility that the brazing material will close the opening.
[0014]
[Action and Effect of the Invention]
In the joint structure of the present invention, the outer periphery of the distal end of the flat tube 3 is aligned with the inner periphery of the flat hole 2, and the outer periphery of the distal end of the flat tube 3 is reduced in length to exceed the thickness of the pipe header 1. Is formed and the stepped portion 3b for positioning is formed at the base thereof,
By fitting the reduced processing portion 3a of the flat tube 3 into the flat hole 2 of the pipe header 1, when brazing between the reduced processing portion 3a and the flat hole 2, the tip of the reduced processing portion 3a is connected to the pipe header. 1 is protruded. Therefore, it is possible to prevent the brazing material from flowing into the flat tube 3 from the front end thereof. Thereby, the opening of the flat tube 3 can be secured widely, and the fluid can flow smoothly.
[0015]
In the above-described configuration, when the flat tube 3 is disposed such that at least the front end thereof is directed horizontally or upward, and the pipe header 1 is fitted to the front end of the flat tube 3 and brazed, the flat tube 3 starts from the front end. The inflow of the brazing material can be reliably prevented.
[0016]
In the above configuration, a plurality of flat tubes 3 are arranged in parallel, and both ends of each flat tube 3 are arranged so as to face horizontally or upward, and a pipe header 1 is fitted to both ends of each flat tube 3 and brazed. In the case of joining, in all of the plurality of flat tubes 3, it is possible to prevent the brazing material from flowing into the inside from the tip of the flat tubes 3 at the time of brazing.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a joint structure between a pipe header and a flat tube according to the present invention.
FIG. 2 is an exploded perspective view of the joint structure.
FIG. 3 is a partially exploded perspective view of a heat exchanger having the joint structure of the present invention.
FIG. 4 is a cross-sectional view of a main part of a joint structure between a conventional pipe header and a flat tube.
FIG. 5 is a perspective view of a main part of a conventional heat exchanger having the same joint structure.
FIG. 6 is a sectional view of a main part of a flat tube used in another joining structure of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pipe header 2 Flat hole 2a Stopper surface 3 Flat tube 3a Reduction processing part 3b Stepped part 4 End cover 5 Door pipe 6 Partition part 7 Brazing part

Claims (3)

パイプヘッダ（１） の外周に、その軸線方向に沿って偏平孔（２） を形成し、その偏平孔（２） に偏平チューブ（３） の端部を嵌着して、その嵌着部をろう付けしてなるパイプヘッダと偏平チューブとの接合構造において、
前記偏平チューブ（３） の先端部外周を、その断面の長径および短径の少なくとも一方が縮小するように加工して、そこに縮小加工部（３ａ）が形成されると共に、その縮小加工部（３ａ）の長さが、前記ヘッダパイプ（１） の厚みを越えるように形成され且つ、その縮小加工部（３ａ）とそれ以外の部分との境に位置決め用の段付き部（３ｂ）が形成され、
前記偏平孔（２） の内周が、前記偏平チューブ（３） の先端部外周に整合するように形成されたことを特徴とするパイプヘッダと偏平チューブとの接合構造。A flat hole (2) is formed on the outer periphery of the pipe header (1) along the axial direction, and the end of the flat tube (3) is fitted into the flat hole (2), and the fitting portion is formed. In the joint structure between the brazed pipe header and the flat tube,
The outer periphery of the distal end portion of the flat tube (3) is processed so that at least one of the major axis and the minor axis of the cross section thereof is reduced, and a reduced processing portion (3a) is formed there, and the reduced processing portion (3a) is formed. 3a) The length of the header pipe (1) is formed so as to exceed the thickness of the header pipe (1), and a stepped portion (3b) for positioning is formed at the boundary between the reduced portion (3a) and the other portion. And
A joint structure between a pipe header and a flat tube, wherein an inner periphery of the flat hole (2) is formed so as to match an outer periphery of a distal end portion of the flat tube (3). 請求項１の接合構造を製造する方法において、
前記ろう付けの際に、前記偏平チューブ（３） の少なくとも先端部が水平または上方に向くように配置し、その偏平チューブ（３） の前記縮小加工部（３ａ）を前記パイプヘッダ（１） の偏平孔（２） に嵌着して、その嵌着部をろう付け接合することとしたパイプヘッダと偏平チューブとの接合方法。The method for manufacturing a joint structure according to claim 1,
At the time of the brazing, the flat tube (3) is arranged so that at least a tip portion thereof is directed horizontally or upward, and the reduced portion (3a) of the flat tube (3) is attached to the pipe header (1). A method of joining a pipe header and a flat tube, wherein the pipe header is fitted into a flat hole (2) and the fitting portion is brazed. 請求項２において、
複数の偏平チューブ（３） を並列させ、夫々の偏平チューブ（３） の両端を水平または上方に向くように配置し、夫々の偏平チューブ（３） の両端の縮小加工部（３ａ）に夫々パイプヘッダ（１） を嵌着してろう付け接合することとしたパイプヘッダと偏平チューブとの接合方法。In claim 2,
A plurality of flat tubes (3) are arranged side by side, and both ends of each flat tube (3) are arranged so as to face horizontal or upward, and pipes are respectively inserted into reduction processing portions (3a) at both ends of each flat tube (3). A method for joining a pipe header and a flat tube, wherein the header (1) is fitted and brazed.
JP2002314953A 2002-10-29 2002-10-29 Joining structure and joining method for pipe header to flat tube Pending JP2004150673A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006024750A1 (en) * 2004-08-03 2006-03-09 Valeo Systemes Thermiques Easy-to-mount heat exchanger with improved heat transfer
US8037930B2 (en) 2006-01-24 2011-10-18 Denso Corporation Heat exchanger
KR101191810B1 (en) * 2010-11-19 2012-10-16 주식회사 한국번디 Heat exchnager and method for manufacturing the same
WO2015063875A1 (en) * 2013-10-30 2015-05-07 三菱電機株式会社 Laminated header, heat exchanger, and air-conditioning apparatus
CN107941065A (en) * 2017-11-13 2018-04-20 山东同创汽车散热装置股份有限公司 Necking heat exchanger tube
US20220065544A1 (en) * 2020-08-27 2022-03-03 Lg Electronics Inc. Heat exchanger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006024750A1 (en) * 2004-08-03 2006-03-09 Valeo Systemes Thermiques Easy-to-mount heat exchanger with improved heat transfer
US8037930B2 (en) 2006-01-24 2011-10-18 Denso Corporation Heat exchanger
KR101191810B1 (en) * 2010-11-19 2012-10-16 주식회사 한국번디 Heat exchnager and method for manufacturing the same
WO2015063875A1 (en) * 2013-10-30 2015-05-07 三菱電機株式会社 Laminated header, heat exchanger, and air-conditioning apparatus
JPWO2015063875A1 (en) * 2013-10-30 2017-03-09 三菱電機株式会社 Laminated header, heat exchanger, heat exchanger manufacturing method, and air conditioner
CN107941065A (en) * 2017-11-13 2018-04-20 山东同创汽车散热装置股份有限公司 Necking heat exchanger tube
US20220065544A1 (en) * 2020-08-27 2022-03-03 Lg Electronics Inc. Heat exchanger

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