JPH0424319Y2 - - Google Patents
Info
- Publication number
- JPH0424319Y2 JPH0424319Y2 JP1983052949U JP5294983U JPH0424319Y2 JP H0424319 Y2 JPH0424319 Y2 JP H0424319Y2 JP 1983052949 U JP1983052949 U JP 1983052949U JP 5294983 U JP5294983 U JP 5294983U JP H0424319 Y2 JPH0424319 Y2 JP H0424319Y2
- Authority
- JP
- Japan
- Prior art keywords
- flat tube
- curvature
- heat exchanger
- aluminum
- radius
- 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.)
- Expired
Links
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000010405 anode material Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、主として自動車用のエアクーラに用
いられるアルミニウム製熱交換器の改良に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of an aluminum heat exchanger used mainly in air coolers for automobiles.
自動車用のエアクーラは、従来第１図に示すよ
うに流路孔１を多数形成した偏平チユーブ２の外
側にろう材によりフイン３を取り付けたもので、
Ａ材からなる前記偏平チユーブ２を電蝕から保
護するために一般にフイン３をZn，Snを含有す
るＡ材（Ａの犠牲陽極材）により形成して、
そのフイン３側を積極的に電蝕させ、偏平チユー
ブ２側を極力電蝕させないようにしている。
Conventionally, air coolers for automobiles have fins 3 attached to the outside of a flat tube 2 with a number of flow passage holes 1 formed therein, as shown in FIG. 1, using brazing material.
In order to protect the flat tube 2 made of material A from electrolytic corrosion, the fins 3 are generally made of material A (sacrificial anode material of A) containing Zn and Sn.
The fin 3 side is actively subjected to electrolytic corrosion, and the flat tube 2 side is prevented from being electrolytically eroded as much as possible.
ところで、前記偏平チユーブ２は、一般にその
左右の曲率半径Ｒがチユーブ自体の厚さｔの0.5
倍になつており、偏平チユーブ２の左端２ａ、右
端２ｂとフイン３との間の距離が長くなり、左端
２ａ、右端２ｂにおいて犠牲陽極効果が失われて
いる。そのため、相変わらず偏平チユーブ２が電
蝕によつて孔が開き、そこから冷却媒体が洩れる
という問題がある。
By the way, the flat tube 2 generally has a left and right radius of curvature R that is 0.5 of the thickness t of the tube itself.
The distance between the left end 2a and right end 2b of the flat tube 2 and the fin 3 is increased, and the sacrificial anode effect is lost at the left end 2a and right end 2b. Therefore, there is still the problem that holes are formed in the flat tube 2 due to electrolytic corrosion, and the cooling medium leaks from the holes.
そこで、従来第２図に示すような左右の曲率半
径が全くない断面短形状の偏平チユーブ４を使用
した熱交換器も採用されている。 Therefore, a heat exchanger using a flat tube 4 having a short cross-section without any left and right radii of curvature as shown in FIG. 2 has been conventionally employed.
しかし乍ら、この場合には空気抵抗が大きくな
り、放熱特性が低下するという問題がある。 However, in this case, there is a problem that air resistance increases and heat dissipation characteristics deteriorate.
本考案は上記二つの問題を同時に解決するため
になされたもので、その目的とするところは、電
蝕によつて偏平チユーブに孔が開くのを防止し、
かつ空気抵抗を少なくして冷却媒体の洩れがな
く、しかも充分な放熱特性が得られる熱交換器を
提供することにある。 This invention was made to solve the above two problems at the same time, and its purpose is to prevent holes from forming in the flat tube due to electrolytic corrosion,
Another object of the present invention is to provide a heat exchanger that reduces air resistance, prevents cooling medium from leaking, and provides sufficient heat dissipation characteristics.
本考案に係るアルミニウム製熱交換器は、アル
ミニウム製の偏平チユーブの外側にそれに対する
犠牲陽極材によつて形成されたアルミニウム製の
フインを設けたアルミニウム製熱交換器に於て、
アルミニウム製の偏平チユーブの空気導入側端部
及び空気導出側端部の曲率半径を、その厚さの
0.75乃至1.5倍の範囲にしたものである。
The aluminum heat exchanger according to the present invention is an aluminum heat exchanger in which aluminum fins formed from a sacrificial anode material are provided on the outside of an aluminum flat tube.
The radius of curvature of the air inlet end and air outlet end of the aluminum flat tube is determined by its thickness.
The range is 0.75 to 1.5 times.
本考案に於ては、アルミニウム製の偏平チユー
ブの空気導入側端部及び空気導出側端部の曲率半
径が、その厚さの0.75乃至1.5倍の範囲にあるか
ら、空気抵抗が通常の偏平チユーブと殆ど同等の
値を維持すると共に、アルミニウム製のフインに
よる犠牲陽極効果が空気導入側端部及び空気導出
側端部の全域に及び、偏平チユーブが腐蝕し難い
ようにする。
In this invention, the radius of curvature of the air inlet end and the air outlet end of the aluminum flat tube is in the range of 0.75 to 1.5 times the thickness, so the air resistance is lower than that of a normal flat tube. At the same time, the sacrificial anode effect by the aluminum fins extends over the entire area of the air inlet end and the air outlet end, making it difficult for the flat tube to corrode.
以下、図面に基づき本考案を具体的に説明す
る。
Hereinafter, the present invention will be specifically explained based on the drawings.
第３図は本考案に係る熱交換器の一実施例を示
したものである。 FIG. 3 shows an embodiment of the heat exchanger according to the present invention.
本考案の熱交換器は、多数の流路孔５を形成し
たＡ材からなる偏平チユーブ６の外側にＡ材
に対して犠牲陽極材となるZn、Snを含有するＡ
材からなるフイン７をろう材８を介して取り付
けてある。そして、その偏平チユーブ６の左右の
曲率半径R′を偏平チユーブ６自体の厚さｔの0.75
倍乃至1.5倍の範囲、例えば１倍にしてある。 The heat exchanger of the present invention has a flat tube 6 made of A material in which a large number of flow passage holes 5 are formed, and an A material containing Zn and Sn as sacrificial anode materials for the A material.
A fin 7 made of wood is attached via a brazing material 8. Then, the left and right radius of curvature R' of the flat tube 6 is 0.75 of the thickness t of the flat tube 6 itself.
The range is from 1.5 times to 1.5 times, for example, 1 time.
第４図は偏平チユーブ６の左右の曲率半径
R′と空気抵抗の関係を示したものであり、曲率
半径R′を偏平チユーブ６の厚さｔの0.5倍とした
ときの値を100％とすれば、曲率半径R′が0.5t≦
R′≦1.5tの範囲では空気抵抗はほぼ水平の曲線を
呈し、わずか上昇するに留まる。 Figure 4 shows the left and right curvature radius of the flat tube 6.
This shows the relationship between R' and air resistance. If the radius of curvature R' is 0.5 times the thickness t of the flat tube 6 and the value is 100%, then the radius of curvature R' is 0.5t≦
In the range R'≦1.5t, the air resistance exhibits an almost horizontal curve and increases only slightly.
第５図は偏平チユーブ６の左右の曲率半径
R′と耐蝕度との関係を示したものであり、曲率
半径R′を偏平チユーブ６の厚さｔの0.5倍とした
ときの値を100％とすれば、曲率半径R′が0.5t以
下では耐蝕度は傾斜直線状に低下するが、0.75t
≦R′≦1.5tの範囲ではなだらかな直線を呈し、耐
蝕性は充分保持される。 Figure 5 shows the left and right curvature radius of the flat tube 6.
This shows the relationship between R' and corrosion resistance. If the radius of curvature R' is 0.5 times the thickness t of the flat tube 6 and the value is 100%, then the radius of curvature R' is 0.5t or less. The corrosion resistance decreases in a linear manner, but at 0.75t
In the range of ≦R′≦1.5t, a gentle straight line is exhibited and corrosion resistance is sufficiently maintained.
従つて、本考案のように偏平チユーブ６の左右
の曲率半径R′を、偏平チユーブ６の左端６ａ、
右端６ｂとフイン７との間の距離が充分短かくな
つた0.75t≦R′≦1.5tの範囲にすれば、電蝕による
偏平チユーブ６の孔開きが防止され、かつ空気抵
抗が少なくなつて冷却媒体の洩れが防止され、同
時に充分な放熱特性が得られる。とりわけ、曲率
半径R′を1tの近辺としたときには、耐蝕性は極め
てよくなり、しかも空気抵抗は非常に小さくな
る。従つて信頼性の高い放熱特性の良好な熱交換
器が得られる。尚、本考案はエアクーラに限ら
ず、その他の熱交換器にも利用できるものであ
る。 Therefore, as in the present invention, the left and right radii of curvature R' of the flat tube 6 are set to the left end 6a of the flat tube 6,
If the distance between the right end 6b and the fin 7 is sufficiently short within the range of 0.75t≦R'≦1.5t, holes in the flat tube 6 due to electrolytic corrosion can be prevented and air resistance will be reduced. Leakage of the cooling medium is prevented, and at the same time sufficient heat dissipation characteristics are obtained. In particular, when the radius of curvature R' is set to around 1 t, corrosion resistance becomes extremely good and air resistance becomes extremely small. Therefore, a heat exchanger with high reliability and good heat dissipation characteristics can be obtained. Note that the present invention is applicable not only to air coolers but also to other heat exchangers.
以上述べたように本考案によれば、電蝕に起因
する偏平チユーブの孔開きが防止され、かつ空気
抵抗も少なくなつて冷却媒体の洩れのない、しか
も放熱特性が充分な熱交換器が得られる。
As described above, according to the present invention, it is possible to obtain a heat exchanger that prevents holes in the flat tube due to electrolytic corrosion, reduces air resistance, prevents leakage of the cooling medium, and has sufficient heat dissipation characteristics. It will be done.
第１図及び第２図はそれぞれ従来の熱交換器の
要部断面図、第３図は本考案に係る熱交換器の一
実施例の要部断面図、第４図は偏平チユーブの左
右の曲率半径と空気抵抗との関係を示す曲線図、
第５図は偏平チユーブの左右の曲率半径と耐蝕度
との関係を示す曲線図である。
６……偏平チユーブ、７……フイン、R′……
曲率半径、ｔ……偏平チユーブの厚さ。
1 and 2 are sectional views of the main parts of a conventional heat exchanger, FIG. 3 is a sectional view of the main parts of an embodiment of the heat exchanger according to the present invention, and FIG. 4 is a sectional view of the left and right sides of the flat tube. A curve diagram showing the relationship between the radius of curvature and air resistance,
FIG. 5 is a curve diagram showing the relationship between the left and right radii of curvature of the flat tube and the degree of corrosion resistance. 6...Flat tube, 7...Fin, R'...
Radius of curvature, t...Thickness of the flat tube.
Claims (1)
対する犠牲陽極材によつて形成されたアルミニウ
ム製のフインを設けたアルミニウム製熱交換器に
於て、アルミニウム製の偏平チユーブの空気導入
側端部及び空気導出側端部の曲率半径を、その厚
さの0.75乃至1.5倍の範囲にしたことを特徴とす
るアルミニウム製熱交換器。 In an aluminum heat exchanger in which aluminum fins formed from a sacrificial anode material are provided on the outside of an aluminum flat tube, the air inlet side end and the air outlet side of the aluminum flat tube An aluminum heat exchanger characterized in that the radius of curvature of the end portion is in the range of 0.75 to 1.5 times the thickness of the aluminum heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294983U JPS59158880U (en) | 1983-04-08 | 1983-04-08 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5294983U JPS59158880U (en) | 1983-04-08 | 1983-04-08 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59158880U JPS59158880U (en) | 1984-10-24 |
| JPH0424319Y2 true JPH0424319Y2 (en) | 1992-06-08 |
Family
ID=30183294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5294983U Granted JPS59158880U (en) | 1983-04-08 | 1983-04-08 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59158880U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6151228B2 (en) * | 2014-08-27 | 2017-06-21 | 株式会社神戸製鋼所 | Heat transfer tube for open rack type vaporizer and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56153766U (en) * | 1980-04-18 | 1981-11-17 |
-
1983
- 1983-04-08 JP JP5294983U patent/JPS59158880U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59158880U (en) | 1984-10-24 |
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