JP2001255091A - Heat exchanger - Google Patents

Heat exchanger

Info

Publication number
JP2001255091A
JP2001255091A JP2000071405A JP2000071405A JP2001255091A JP 2001255091 A JP2001255091 A JP 2001255091A JP 2000071405 A JP2000071405 A JP 2000071405A JP 2000071405 A JP2000071405 A JP 2000071405A JP 2001255091 A JP2001255091 A JP 2001255091A
Authority
JP
Japan
Prior art keywords
heat exchanger
fin
fins
flat
tank
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.)
Pending
Application number
JP2000071405A
Other languages
Japanese (ja)
Inventor
Soichi Kato
宗一 加藤
Mutsumi Fukushima
睦 福島
Muneo Sakurada
宗夫 桜田
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.)
Valeo Thermal Systems Japan Corp
Original Assignee
Zexel Valeo Climate Control 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 Valeo Climate Control Corp filed Critical Zexel Valeo Climate Control Corp
Priority to JP2000071405A priority Critical patent/JP2001255091A/en
Publication of JP2001255091A publication Critical patent/JP2001255091A/en
Pending 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
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • 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
    • F28D1/05391Assemblies 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

Abstract

PROBLEM TO BE SOLVED: To prevent the straight part of a meandering fin from buckling with pressure added in stacking direction at brazing of a heat exchanger. SOLUTION: In a heat exchanger where flat tubes and meandering fins are stacked alternately and which has a tank at one end at feast of the above flat tube, the above meandering fin is alternately constituted of curve parts and straight parts, but the two sections on straight part side of the above curve part are made small in diameter, and they are coupled with each other through a pipe with a larger diameter than the above small diameter, whereby that curve part has spring effect.

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】この発明は、主に自動車のエ
バポレータやヒータコアに使用される熱交換器に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger mainly used for an evaporator and a heater core of an automobile.

【0002】[0002]

【従来の技術】自動車の熱交換器として、アルミニウム
合金の成形プレートを最中状に接合して扁平状のチュー
ブを形成し、このチューブとフィンを交互に所望数積層
してその両端又は一方にタンクを配して構成されてい
る。ここに用いられるフィンとしては、湾曲部と直線部
とが交互に連続して形成のいわゆるコルゲート状のフィ
ンである。
2. Description of the Related Art As a heat exchanger of an automobile, a flat tube is formed by joining an aluminum alloy forming plate in the middle, and a desired number of such tubes and fins are alternately laminated and placed on both ends or one of them. It is configured with a tank. The fin used here is a so-called corrugated fin in which a curved portion and a straight portion are formed alternately and continuously.

【0003】これらのコルゲート状のフィンの先行例と
して、特開平5−106985号公報、特開平2−21
198号公報、特開昭63−61892号公報等があ
る。前記特開平5−106985号では、湾曲端部の曲
げ半径は0.14から0.37mm範囲内に設定すると
しており、エバポレータやコンデンサでは、フィンのピ
ッチが細かすぎ、特にエバポレータでは凝縮水の排水性
が悪く、目詰まりの問題があった。
As prior examples of these corrugated fins, JP-A-5-106985 and JP-A-2-21 are known.
198 and JP-A-63-61892. In JP-A-5-106985, the bending radius of the curved end is set within a range of 0.14 to 0.37 mm. In an evaporator or a condenser, the fin pitch is too small. Poor performance and clogging problem.

【0004】特開平2−11198号公報にあっては、
コルゲートフィンの谷部を平坦面とし、この平坦な谷部
を上記扁平形チューブの扁平面に溶接したので、接合強
度が大きくなると共に、熱伝導接触面も大きくなるとの
開示がある。
[0004] In JP-A-2-11198,
It is disclosed that, since the valleys of the corrugated fins are flat and the flat valleys are welded to the flat surface of the flat tube, the joint strength is increased and the heat conduction contact surface is also increased.

【0005】[0005]

【発明が解決しようとする課題】しかし、この例では、
積層型の熱交換器で、ジグにて組み立て積層方向に若干
の加圧力を加えながらろう付を行うが、フィンの頂部に
湾曲部(R形状)がないので、フィンの直線部Aが加圧
力を受け座屈しやすく、図5に示す2点鎖状のように、
ろう付時にフィンの直線部が座屈してしまう問題があっ
た。
However, in this example,
In the stacking type heat exchanger, brazing is performed while applying a slight pressing force in the assembly lamination direction with a jig. However, since there is no curved portion (R shape) at the top of the fin, the linear portion A of the fin has a pressing force. Buckles easily, as shown by the two-dot chain in FIG.
There was a problem that the straight portion of the fin buckled during brazing.

【0006】また、特開昭63−61892号公報にあ
っては、頂部R形状がフィンのピッチが1/2以上であ
ることが提案されている。この例にあっても、フィンで
は頂部R形状とルーバの切り起されている直線部との接
続部が角に曲げられているため、積層時の加圧力に対し
頂部R形状がスプリング効果(作用)を発揮できず、前
記特開平2−11198号と同じように直線部が座屈す
る現象が発生してしまう。また、この公報にある従来例
であっても、頂部形状が円弧状のために直線部の方が弱
く、座屈する危険性を有していた。
In Japanese Patent Application Laid-Open No. 63-61892, it is proposed that the top R shape has a fin pitch of 1/2 or more. Also in this example, since the connection between the top R shape and the straight portion cut and raised by the louver is bent at the corner in the fin, the top R shape exerts a spring effect (action) on the pressing force during lamination. ) Cannot be exhibited, and a phenomenon in which the linear portion buckles occurs as in the case of Japanese Patent Application Laid-Open No. 2-1198. Further, even in the conventional example described in this publication, the straight portion is weaker due to the arc shape of the top portion, and has a risk of buckling.

【0007】このため、この発明では、蛇行状のフィン
の直線部の座屈を防ぐためと、フィンとチューブの接触
面積の拡大を図ることを両立させることを目的とするも
のである。
SUMMARY OF THE INVENTION It is an object of the present invention to achieve both the prevention of the buckling of the straight portion of the meandering fin and the enlargement of the contact area between the fin and the tube.

【0008】[0008]

【課題を解決するための手段】この発明は、両側に平坦
面を有する扁平チューブと、蛇行状のフィンとを交互に
積層し、少なくとも前記扁平チューブの一端にタンクを
有する熱交換器において、前記蛇行状のフィンは、湾曲
部と直線部とが交互に形成され、該湾曲部は直線部側の
2つの部位を小径とすると共に、該小径間をそれより大
きい径で結んで形成し、ろう付時に加えられる前記扁平
チューブの積層方向からの圧力にて前記フィンの湾曲部
が弾性変形して該フィンの座屈を防ぐと共に、前記した
チューブとの接触面積を増加させること(請求項1)。
そして、好ましくは、小径の半径は、フィンピッチの1
/4未満の値とすること(請求項2)。及び、大径の半
径は、フィンピッチの1/4以上の値とすることにある
(請求項3)。
According to the present invention, there is provided a heat exchanger in which flat tubes having flat surfaces on both sides and meandering fins are alternately laminated, and at least one flat tube has a tank at one end. In the meandering fin, a curved portion and a straight portion are alternately formed, and the curved portion is formed by making the two portions on the straight portion side a small diameter and connecting the small diameters with a larger diameter. The curved portion of the fin is elastically deformed by the pressure applied in the laminating direction of the flat tubes to prevent the fins from buckling, and the contact area with the tube is increased (claim 1). .
And preferably, the radius of the small diameter is one of the fin pitch.
The value should be less than / 4 (claim 2). Further, the radius of the large diameter is set to a value equal to or more than 1/4 of the fin pitch (claim 3).

【0009】したがって、ろう付時にジグにて熱交換器
は固定され、積層方向に圧力が加えられるが、加えられ
る圧力により、フィンの湾曲部の小径と大径との連続的
な形状が直線に近い形状となり、スプリング作用が働い
て直線部を座屈から保護すると共にチューブの平坦面と
の接触面積が拡大するものである。以下、この発明の実
施の形態を図面をもとに説明する。
Therefore, the heat exchanger is fixed by the jig at the time of brazing, and pressure is applied in the laminating direction. However, due to the applied pressure, the continuous shape of the small diameter and the large diameter of the curved portion of the fin becomes linear. The shape becomes close, and the spring action works to protect the straight portion from buckling and to increase the contact area with the flat surface of the tube. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

【0010】[0010]

【発明の実施の形態】この発明の実施の形態を図面にも
とづいて説明する。
Embodiments of the present invention will be described with reference to the drawings.

【0011】図1において、この発明の熱交換器が示さ
れ、熱交換器1は2パスの熱交換器1で、空気の流れ方
向に前後するチューブ2a,2bとコルゲート状のフィ
ン3とを交互に積層すると共に、その積層方向の両端に
エンドプレート4を配し、別体の上方及び下方のタンク
5,6が各チューブ2a,2bの長手方向両端に連通す
るようにろう付接合されている。この熱交換器1を構成
するチューブ2a,2bは、一枚の板材をロールフォー
ミング成形により製造され、断面が扁平状となってい
る。
FIG. 1 shows a heat exchanger according to the present invention. The heat exchanger 1 is a two-pass heat exchanger 1 comprising tubes 2a and 2b which are arranged in front and rear in the direction of air flow and corrugated fins 3. The plates are alternately laminated, and end plates 4 are arranged at both ends in the laminating direction. Separate upper and lower tanks 5, 6 are brazed and joined so as to communicate with the longitudinal ends of the tubes 2a, 2b. I have. The tubes 2a and 2b constituting the heat exchanger 1 are manufactured by roll forming of one sheet material, and have a flat cross section.

【0012】下方のタンク6は、アルミニウム合金材が
用いられ、独立した入口側通路9と出口側通路10を備
えると共に、その一方側にチューブ2a,2bが挿入さ
れる一対の挿入孔11,11が等間隔で多数形成されて
いる。そして、長手方向両端(片方が図示されず)に閉
塞板14,14が前記各通路9,10を閉塞するため長
孔13を介して挿入されている。なお、入口側通路9と
出口側通路10には、冷凍サイクルに接続する入口パイ
プ17と出口パイプ18がそれぞれ接続されている。
The lower tank 6 is made of an aluminum alloy material, has an independent inlet passage 9 and an independent outlet passage 10, and has a pair of insertion holes 11, 11 into which tubes 2a, 2b are inserted on one side. Are formed at equal intervals. At both ends in the longitudinal direction (one of them is not shown), closing plates 14, 14 are inserted through long holes 13 to close the passages 9, 10. In addition, an inlet pipe 17 and an outlet pipe 18 connected to the refrigeration cycle are connected to the inlet-side passage 9 and the outlet-side passage 10, respectively.

【0013】上方のタンク(Uターン側のタンク)5
は、アルミニウム合金材が用いられ、長手方向に長く中
空部22が形成され、その一方側面に前記チューブ2
a,2bが挿入される図示しない挿入孔が等間隔で多数
形成されている。そして、このタンク5には、その長手
方向両端(片方しか図示されず)の閉塞板21が中空部
22を閉塞するため、長孔(図示せず)を介して挿入さ
れている。
Upper tank (U-turn side tank) 5
Is made of an aluminum alloy material, has a long hollow portion 22 formed in the longitudinal direction, and has the tube 2
A large number of insertion holes (not shown) into which a and 2b are inserted are formed at equal intervals. The tank 5 is inserted through oblong holes (not shown) in order to close the hollow portion 22 with closing plates 21 at both ends in the longitudinal direction (only one is shown).

【0014】また、前記タンク5,6と前記チューブ2
a,2bとは炉中ろう付されるが、タンク5,6が押し
出し成形のためにろう材層が外面に形成されていないの
で、図示しないが、ろう材シートを介在しながら挿入孔
11に挿入されるものである。また、ろう材シートの代
わりにタンク6の表面にろう材層を塗布しても良いもの
である。また更にタンク5,6には、耐腐食性向上のた
めに、亜鉛Znを外面に塗布して外面に犠牲腐食層を形
成している。
The tanks 5 and 6 and the tube 2
a and 2b are brazed in a furnace. However, since the brazing material layers are not formed on the outer surfaces of the tanks 5 and 6 for extrusion molding, they are not shown, but are inserted into the insertion holes 11 while interposing a brazing material sheet. It is what is inserted. Further, a brazing material layer may be applied to the surface of the tank 6 instead of the brazing material sheet. Further, in the tanks 5 and 6, zinc Zn is applied to the outer surface to form a sacrificial corrosion layer on the outer surface in order to improve corrosion resistance.

【0015】このような構成の熱交換器1にあっては、
冷媒がタンク6の入口側通路9から入り、そして後方側
のチューブ2b内を流れ、上方のタンク5内に至り、再
び前方側のチューブ2a内に流れてタンク6の出口側通
路10に至り、外部機器へ流出される。
In the heat exchanger 1 having such a configuration,
Refrigerant enters through the inlet side passage 9 of the tank 6, flows through the tube 2b on the rear side, reaches the inside of the upper tank 5, flows again into the tube 2a on the front side, and reaches the outlet side passage 10 of the tank 6, Spilled to external equipment.

【0016】図2において、この発明の熱交換器1のタ
ンクを外したチューブとフィンの拡大斜視図が示されて
いる。この図におけるチューブ2a,2bは、空気の流
れに対して前後に配され、共に外面にろう材層を持つア
ルミニウム合金をロールホーミング成形にて製造され、
断面方向から見て扁平状で、短手方向で外面に平坦面1
5a,15bを、長手方向両端に一対の円弧部20a,
20bを有し、一方の円弧部20aは巻き締め加工が施
されている。このチューブ2a,2bは、その内部にイ
ンナーフィン25,25がそれぞれ挿入さて、熱交換器
1の炉中ろう付時に他の部品と共にろう付されており、
該チューブ2a,2b内の冷媒の流れを乱す作用を行っ
ている。
FIG. 2 is an enlarged perspective view of the tubes and fins of the heat exchanger 1 of the present invention from which the tank has been removed. The tubes 2a and 2b in this figure are arranged before and after with respect to the flow of air, and both are manufactured by roll homing an aluminum alloy having a brazing material layer on the outer surface.
Flat when viewed from the cross-sectional direction, flat surface 1
5a, 15b, a pair of arc portions 20a, 20a,
20b, and one of the arc portions 20a is subjected to a winding process. Inner fins 25, 25 are inserted into the tubes 2a, 2b, respectively, and are brazed together with other parts when brazing the heat exchanger 1 in the furnace.
It acts to disrupt the flow of the refrigerant in the tubes 2a, 2b.

【0017】図3、図4において、前記したフィン3の
拡大断面図が示されている。このフィン3はロール成形
により加工され、湾曲部30と直線部31を持ち、これ
が交互に形成した蛇行状のもので、湾曲部30はその直
線部側の2つの部位を小径30a,30aとし、その両
小径間を該小径よりも大きな大径30bとして一連に形
成されている。
FIGS. 3 and 4 are enlarged sectional views of the fin 3 described above. The fin 3 is processed by roll forming and has a curved portion 30 and a straight portion 31 which are alternately formed in a meandering shape. The curved portion 30 has two portions on the straight portion side as small diameters 30a, 30a. The space between the two small diameters is formed in series as a large diameter 30b larger than the small diameter.

【0018】なお、湾曲部30の小径30a,30aの
半径は、例えばフィンピッチPの1/4未満ぐらいの値
が好ましい。フィンピッチfPが3〜4mmぐらいであ
るので、仮に4mmとすると、半径Rとして1mm未満
の値となるものである。したがって、その小径間を繋ぐ
大径30bは前記した小径の半径(フィンピッチの1/
4)よりも大きな値となること当然である。ここでのフ
ィン3のフィン高さHは、ほぼ8mmぐらいである。
The radius of the small diameters 30a of the curved portion 30 is preferably, for example, less than 1/4 of the fin pitch P. Since the fin pitch fP is about 3 to 4 mm, assuming that the fin pitch is 4 mm, the radius R is a value less than 1 mm. Therefore, the large diameter 30b connecting the small diameters is equal to the radius of the small diameter (1/3 of the fin pitch).
Naturally, the value becomes larger than 4). The fin height H of the fins 3 here is about 8 mm.

【0019】以上のように、フィン3は、チューブ2
a,2bとの間に介在されて、ジグが介して熱交換器が
組み立てられると、チューブ2a,2bの積層方向から
圧力が加えられるので、図4に示すように湾曲部30が
二点鎖状のようにへこみ(弾性変形)、直線部31へ加
わる圧力を緩和させるようになり、該直線部31の座屈
が防がれる。また、湾曲部30がへこむ(弾性変形)こ
とで、主に大径30bが直線状となり、チューブ2a,
2bの平坦面との接触面積が拡大することになる。な
お、熱交換器1は炉中ろう付されるので、湾曲部30は
へこんだ状態(直線に近い状態)にてろう付されて製品
となるものである。
As described above, the fin 3 is connected to the tube 2
When the heat exchanger is assembled through the jig and interposed between the tubes 2a and 2b, pressure is applied from the laminating direction of the tubes 2a and 2b. As a result, the pressure applied to the linear portion 31 is reduced by dents (elastic deformation), and buckling of the linear portion 31 is prevented. In addition, when the curved portion 30 is dented (elastic deformation), the large diameter 30b mainly becomes linear, and the tubes 2a,
The contact area of the flat surface 2b with the flat surface is increased. In addition, since the heat exchanger 1 is brazed in a furnace, the curved portion 30 is brazed in a dented state (a state close to a straight line) to be a product.

【0020】[0020]

【発明の効果】以上のように、この発明によれば、ろう
付時にチューブの積層方向に加えられる圧力がフィンに
伝えられるが、該フィンの湾曲部が弾性変形して直線部
への圧力が緩和されることから、直線部の座屈が防がれ
るものである。また湾曲部が直線に近い形状となり、チ
ューブの平坦面との接触面積が拡大することになり、熱
交換効率の向上が図られるものである。
As described above, according to the present invention, the pressure applied in the laminating direction of the tubes at the time of brazing is transmitted to the fins, but the curved portions of the fins are elastically deformed and the pressure on the linear portions is reduced. Since it is alleviated, buckling of the straight portion is prevented. Further, the curved portion has a shape close to a straight line, and the contact area with the flat surface of the tube is increased, so that the heat exchange efficiency is improved.

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

【図1】この発明に係る熱交換器の斜視図である。FIG. 1 is a perspective view of a heat exchanger according to the present invention.

【図2】同上のタンクを外した状態のチューブとフィン
とよりなる熱交換器の拡大斜視図である。
FIG. 2 is an enlarged perspective view of a heat exchanger composed of tubes and fins with the tank removed from the above.

【図3】同上の熱交換器に用いられるフィンの拡大断面
図である。
FIG. 3 is an enlarged cross-sectional view of a fin used in the above heat exchanger.

【図4】フィンの湾曲部付近にあって、熱交換器のチュ
ーブ間に挿入されて組み立てられた状態の該フィンの湾
曲部の作用説明図である。
FIG. 4 is an operation explanatory view of the bent portion of the fin in a state near the bent portion of the fin and inserted between tubes of the heat exchanger and assembled.

【図5】フィンの頂部を直線状とした例における直線部
の座屈を示す拡大説明図である。
FIG. 5 is an enlarged explanatory view showing buckling of the linear portion in an example in which the top of the fin is linear.

【符号の説明】[Explanation of symbols]

1 熱交換器 2a,2b チューブ 3 フィン 5 タンク 6 タンク 9 入口側通路 10 出口側通路 15a,15b 平坦面 20a,20b 円弧部 25 インナーフィン 30 湾曲部 31 直線部 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2a, 2b Tube 3 Fin 5 Tank 6 Tank 9 Inlet side passage 10 Outlet side passage 15a, 15b Flat surface 20a, 20b Arc part 25 Inner fin 30 Curved part 31 Linear part

───────────────────────────────────────────────────── フロントページの続き (72)発明者 桜田 宗夫 埼玉県大里郡江南町大字千代字東原39番地 株式会社ゼクセル江南工場内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Muneo Sakurada 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama Pref.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 両側に平坦面を有する扁平チューブと、
蛇行状のフィンとを交互に積層し、少なくとも前記扁平
チューブの一端にタンクを有する熱交換器において、 前記蛇行状のフィンは、湾曲部と直線部とが交互に形成
され、該湾曲部は直線部側の2つの部位を小径とすると
共に、該小径間をそれより大きい径で結んで形成し、ろ
う付時に加えられる前記扁平チューブの積層方向からの
圧力にて前記フィンの湾曲部が弾性変形して該フィンの
座屈を防ぐと共に、前記したチューブとの接触面積を増
加させることを特徴とする熱交換器。
1. A flat tube having flat surfaces on both sides,
In a heat exchanger having meandering fins alternately stacked and having a tank at least at one end of the flat tube, the meandering fins are formed such that a curved portion and a straight portion are formed alternately, and the curved portion is straight. The two fins have a small diameter and are formed by connecting the small diameters with a larger diameter, and the curved portion of the fin is elastically deformed by the pressure applied in the laminating direction of the flat tubes during brazing. And preventing the fins from buckling and increasing the contact area with the tube.
【請求項2】 小径の半径は、フィンピッチの1/4未
満の値とすることを特徴とする請求項1記載の熱交換
器。
2. The heat exchanger according to claim 1, wherein the radius of the small diameter is less than 1/4 of the fin pitch.
【請求項3】 大径の半径は、フィンピッチの1/4以
上の値とすることを特徴とする請求項1記載の熱交換
器。
3. The heat exchanger according to claim 1, wherein the radius of the large diameter is a value equal to or more than 4 of the fin pitch.
JP2000071405A 2000-03-15 2000-03-15 Heat exchanger Pending JP2001255091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000071405A JP2001255091A (en) 2000-03-15 2000-03-15 Heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000071405A JP2001255091A (en) 2000-03-15 2000-03-15 Heat exchanger

Publications (1)

Publication Number Publication Date
JP2001255091A true JP2001255091A (en) 2001-09-21

Family

ID=18589995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000071405A Pending JP2001255091A (en) 2000-03-15 2000-03-15 Heat exchanger

Country Status (1)

Country Link
JP (1) JP2001255091A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2875896A1 (en) * 2004-09-29 2006-03-31 Valeo Thermique Moteur Sas INTERCHANGE OF HEAT EXCHANGE FOR A HEAT EXCHANGE DEVICE
JP2006138620A (en) * 2004-07-15 2006-06-01 Showa Denko Kk Heat exchanger
JP2006170600A (en) * 2004-07-05 2006-06-29 Showa Denko Kk Heat exchanger
JP2006170601A (en) * 2004-07-05 2006-06-29 Showa Denko Kk Evaporator
JP2006194576A (en) * 2004-12-16 2006-07-27 Showa Denko Kk Evaporator
DE102006035209A1 (en) * 2006-07-29 2008-01-31 Modine Manufacturing Co., Racine Corrugated rib i.e. flat top fins, for heat exchanger, has bending edge formed in such manner that adjusted resilience is reduced during bending, and crests and troughs that are made soft so that crests and troughs are drawn back
CN101870023A (en) * 2010-06-25 2010-10-27 三花丹佛斯(杭州)微通道换热器有限公司 Clamping device for welding heat exchanger
US8037929B2 (en) 2004-12-16 2011-10-18 Showa Denko K.K. Evaporator
DE102013226542A1 (en) * 2013-12-18 2015-06-18 MAHLE Behr GmbH & Co. KG heater

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006170600A (en) * 2004-07-05 2006-06-29 Showa Denko Kk Heat exchanger
JP2006170601A (en) * 2004-07-05 2006-06-29 Showa Denko Kk Evaporator
JP2006138620A (en) * 2004-07-15 2006-06-01 Showa Denko Kk Heat exchanger
JP4599245B2 (en) * 2004-07-15 2010-12-15 昭和電工株式会社 Heat exchanger
FR2875896A1 (en) * 2004-09-29 2006-03-31 Valeo Thermique Moteur Sas INTERCHANGE OF HEAT EXCHANGE FOR A HEAT EXCHANGE DEVICE
WO2006035149A1 (en) * 2004-09-29 2006-04-06 Valeo Systemes Thermiques Heat exchange insert for a heat exchange device
JP2006194576A (en) * 2004-12-16 2006-07-27 Showa Denko Kk Evaporator
US8037929B2 (en) 2004-12-16 2011-10-18 Showa Denko K.K. Evaporator
DE102006035209A1 (en) * 2006-07-29 2008-01-31 Modine Manufacturing Co., Racine Corrugated rib i.e. flat top fins, for heat exchanger, has bending edge formed in such manner that adjusted resilience is reduced during bending, and crests and troughs that are made soft so that crests and troughs are drawn back
CN101870023A (en) * 2010-06-25 2010-10-27 三花丹佛斯(杭州)微通道换热器有限公司 Clamping device for welding heat exchanger
CN105364256A (en) * 2010-06-25 2016-03-02 杭州三花微通道换热器有限公司 Clamping device of welding heat exchanger
DE102013226542A1 (en) * 2013-12-18 2015-06-18 MAHLE Behr GmbH & Co. KG heater

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