JPH0678879B2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH0678879B2 JPH0678879B2 JP61063923A JP6392386A JPH0678879B2 JP H0678879 B2 JPH0678879 B2 JP H0678879B2 JP 61063923 A JP61063923 A JP 61063923A JP 6392386 A JP6392386 A JP 6392386A JP H0678879 B2 JPH0678879 B2 JP H0678879B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- corrosion
- present
- pitting
- brazing
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、主に空気その他の気体の熱交換器に関する。The present invention relates to a heat exchanger mainly for air and other gases.
空気あるいはその他気体を接触させ、他の気体又は液体
と熱交換させることを目的としたいわゆる空気熱交換器
は、アルミニウム又はその合金あるいは銅又はその合
金、鉄又はその合金等を組み合せて製作されることが多
く、たがいに異つた材料が接触する場合が多々あり、そ
れぞれの材料間の自然電位差によつて腐食し、装置寿命
をきわめて短くすることがしばしば起こつている。A so-called air heat exchanger for contacting air or other gas and exchanging heat with another gas or liquid is manufactured by combining aluminum or its alloy, copper or its alloy, iron or its alloy, etc. In many cases, different materials often come into contact with each other, and it often happens that corrosion is caused by the self-potential difference between the respective materials, resulting in extremely short device life.
空気熱交換器は、全体をまつたく同じ材料で作られるこ
とはきわめて少ないため、前述のような腐食事故が起こ
りやすい。そのために、従来は、表面処理をして、耐食
性を上げる塗装あるいは化学処理（例えば、めつき等）
を施して使用に供しているが、通常は、これらの処理コ
ストが高く、製品コストも非常に高くなる原因となつて
いる。Since the air heat exchanger is rarely made of the same material as a whole, the above-mentioned corrosion accident is likely to occur. Therefore, in the past, coating or chemical treatment (for example, plating) was carried out by surface treatment to improve corrosion resistance.
However, the treatment cost is usually high and the product cost is also very high.
この腐食問題を、本発明では、異材が接触する部分の面
積をできるかぎり少なくして腐食の発生確率を低減する
ことにより、解決するものである。In the present invention, this corrosion problem is solved by reducing the area of the portion where different materials come into contact as much as possible to reduce the probability of corrosion.
すなわち本発明は，管材にフイン材を接着して構成され
る熱交換器において、前記管材とフイン材とを部分的に
接着してなることを特徴とする熱交換器に関する。That is, the present invention relates to a heat exchanger configured by adhering a fin material to a pipe material, wherein the pipe material and the fin material are partially adhered to each other.
従来は、管材とフイン材とのロウ付等により連続的に接
着していたが、本発明では、これらを部分的に接着する
ものである。腐食（主に孔食）は確率的に発生するた
め、この確率面積を部分的接着により減少させるもので
ある。Conventionally, the pipe material and the fin material are continuously bonded by brazing or the like, but in the present invention, these are partially bonded. Since corrosion (mainly pitting corrosion) occurs stochastically, this probability area is reduced by partial adhesion.
故に、本発明によつて得られる空気熱交換器は、前述し
た従来の問題点を解決し、装置寿命を大幅に延長するこ
とができる。Therefore, the air heat exchanger obtained according to the present invention can solve the above-mentioned conventional problems and greatly extend the life of the device.
第１図に示した熱交換器腐食試験片について、放熱フイ
ン１の基台２上へのロウ付けを、本発明の部分的接着
と、従来の全面接着により行なつて製作したものについ
て、腐食試験を行つた。なお、使用材料は、第１表に揚
げる規格のものを用いた。Regarding the heat exchanger corrosion test piece shown in FIG. 1, the heat radiation fin 1 was brazed onto the base 2 by partial adhesion according to the present invention and conventional whole surface adhesion, and produced. I took the test. The materials used were those specified in Table 1.
第２図及び第３図は、第１図のロウ付部分３の詳細を示
す図で、第２図が本発明によつて得られたもの、第３図
が、従来法によつて得られたものであり、第2,3図中の
４はロウ材フイレツトである。2 and 3 show details of the brazed part 3 of FIG. 1, FIG. 2 being obtained by the present invention, and FIG. 3 being obtained by a conventional method. 4 in FIGS. 2 and 3 is a brazing filler material.
両者の構造的な相異は、このロウ付け部のみであり、具
体的に述べると、従来法によるものは、連続的に接着さ
れているのに対し、本発明によるものは、部分的に接着
されているところが異なつている。The structural difference between the two is only in the brazing portion. Specifically, the conventional method is continuously bonded, whereas the present invention is partially bonded. What is done is different.
この両者について、JIS2371による塩水噴霧腐食試験を
実施し、1000時間後の熱交換器の基台２に発生した孔食
の最大孔食深度と同じく深度100μｍ以上の孔食個数を
測定した。その結果を、第２表に示す。この結果から、
本発明によるものは、最大孔食深度で従来の2/3ｇ孔食
個数で1/5に減少することが確認された。A salt spray corrosion test according to JIS 2371 was carried out on both of them, and the number of pitting corrosion at a depth of 100 μm or more was measured as well as the maximum pitting corrosion depth of the pitting corrosion generated on the base 2 of the heat exchanger after 1000 hours. The results are shown in Table 2. from this result,
It was confirmed that the maximum pitting depth of the present invention was reduced to 1/5 of the conventional 2/3 g pitting number.
〔発明の効果〕 本発明によれば、空気熱交換器の腐食が、異種材料との
接触面積を減らすことにより大巾に軽減できる。 EFFECTS OF THE INVENTION According to the present invention, corrosion of the air heat exchanger can be greatly reduced by reducing the contact area with different materials.
第１図は、本発明の実施例で用いた腐食試験用熱交換器
試験片の構成図であり、第２図は、本発明によるロウ付
部分の詳細図、第３図は、従来法によるロウ付部分の詳
細図を示す。FIG. 1 is a block diagram of a heat exchanger test piece for corrosion test used in an embodiment of the present invention, FIG. 2 is a detailed view of a brazed portion according to the present invention, and FIG. 3 is a conventional method. The detailed view of a brazing part is shown.
Claims (1)
換器において、前記管材とフイン材とを部分的に接着し
てなることを特徴とする熱交換器。1. A heat exchanger configured by adhering a fin material to a pipe material, wherein the pipe material and the fin material are partially adhered to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61063923A JPH0678879B2 (en) | 1986-03-24 | 1986-03-24 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61063923A JPH0678879B2 (en) | 1986-03-24 | 1986-03-24 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62223597A JPS62223597A (en) | 1987-10-01 |
| JPH0678879B2 true JPH0678879B2 (en) | 1994-10-05 |
Family
ID=13243347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61063923A Expired - Fee Related JPH0678879B2 (en) | 1986-03-24 | 1986-03-24 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0678879B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837081U (en) * | 1981-08-28 | 1983-03-10 | 日本ラヂヱ−タ−株式会社 | Evaporator |
| JPS60105973U (en) * | 1983-12-26 | 1985-07-19 | カルソニックカンセイ株式会社 | Heat exchanger |
-
1986
- 1986-03-24 JP JP61063923A patent/JPH0678879B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62223597A (en) | 1987-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |