JPS60255965A - Manufacture of heat exchanger tube for heat exchanger - Google Patents
Manufacture of heat exchanger tube for heat exchangerInfo
- Publication number
- JPS60255965A JPS60255965A JP59110112A JP11011284A JPS60255965A JP S60255965 A JPS60255965 A JP S60255965A JP 59110112 A JP59110112 A JP 59110112A JP 11011284 A JP11011284 A JP 11011284A JP S60255965 A JPS60255965 A JP S60255965A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- heat exchanger
- wire
- tube
- electric current
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/126—Detonation spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は、熱交換器用伝熱管の＃遣方法に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a method for inserting heat exchanger tubes for a heat exchanger.
熱交換器用伝熱管において、伝熱効率を高めるには、 ■ 伝熱面積を大きくする。 To increase heat transfer efficiency in heat transfer tubes for heat exchangers, ■ Increase the heat transfer area.
■ 核沸騰をおこしや丁（する ■ 毛細管現象をおごしや丁（する ■ 乱流が生じや丁（する ことが有効とされている。■Create nucleate boiling ■ Capillary action ■ Turbulent flow occurs. It is said that this is effective.
ところが、従来実用に供されている伝熱管、たとえば内
面平滑なもの（平滑管）あるいは内面にらせん溝等の付
いたもの（溝付き管〕なとは、上記項目を十分満足させ
るまでには至らず、デだまた伝熱効率の低いものであっ
た。そこで、不出願人等は、エリ一層伝熱効率の高い伝
熱管を提供丁べ（鋭意研究したところ、管の内面に熱伝
導性を有する粉粒捧を、無数接合丁れば、伝熱面積を人
さくでき、粉粒坏間に生じる空間を沸騰核として効果的
に作用させろことができ、その結果乱流を効果的に生じ
させることができ、さらに毛細管現象ｆｔ有効に生じさ
せることができる。との考えに至った。However, the heat exchanger tubes that have been put into practical use to date, such as those with a smooth inner surface (smooth tube) or those with spiral grooves on the inner surface (grooved tube), do not fully satisfy the above requirements. However, the heat transfer efficiency was low.Therefore, the applicants proposed a heat transfer tube with even higher heat transfer efficiency (after intensive research, they found that the inner surface of the tube was coated with thermally conductive powder). By connecting a large number of powder grains, the heat transfer area can be reduced, and the space created between the powder grains can effectively act as a boiling nucleus, and as a result, turbulence can be effectively generated. We have come up with the idea that, in addition, capillary action can be effectively generated.
ところが、現在のところ、このような伝熱管の有効適切
な製造方法は提供されていないのが実情であり、その方
法の開発が望まれていた。However, the current situation is that no effective and appropriate method for manufacturing such heat exchanger tubes has been provided, and the development of such a method has been desired.
本発明は、上記のように管の内面に粉粒体を接合させて
なる伝熱管？：製造するための有効適切な方法を提供す
ることを目的とする。The present invention is a heat exchanger tube formed by bonding powder and granules to the inner surface of the tube as described above. : The purpose is to provide an effective and suitable method for manufacturing.
本発明の製造方法にあっては、管内に挿通した細線を爆
発的に溶融させて金属粒を周囲に飛散させることに最大
の特徴があり、工程としては、次のイ〜ハの各工程を備
えている。The main feature of the manufacturing method of the present invention is that the thin wire inserted into the tube is explosively melted and metal particles are scattered around the tube. We are prepared.
（イ）管内に細−を神通し、この細線の両端に瞬間的に
高電圧をかけて入電流な流子工程、（ロ）細線に瞬間的
に流れた入電流により、細４１８ｉを瞬時に爆発的に浴
融させて金属粒な周囲に飛散させる工程、
←→ 細−を爆発的に溶融させた際の勢いにより、溶融
状態の飛散金属粒を、管内面に付着接合させ、金属粒な
管内面に一様に接合させる工程。(b) A flow process in which a thin wire is passed through the pipe, a high voltage is instantaneously applied to both ends of the thin wire, and a current flows through the tube. ←→ The process of explosively melting the metal particles in a bath and scattering them around the metal particles. The process of uniformly bonding the inner surface of the pipe.
なお、必要に応じて、これら各工程に加え、細線に瞬間
的に高′成圧をかけて大電流を流子的に。In addition to each of these steps, if necessary, a high current is applied to the thin wire in an instantaneous manner.
管内に不活性ガス又は還元性ガスを入れる工程を加える
と、管内が不活性又は還元性雰囲気となるので、溶融金
属の酸化、窒化が起こらず、管内面への付着・接合強度
が向上し、脱落する金属粒を低減させることができる点
で好ましζ・。By adding the process of introducing an inert gas or reducing gas into the tube, the inside of the tube becomes an inert or reducing atmosphere, so oxidation and nitridation of the molten metal do not occur, and the adhesion and bonding strength to the inner surface of the tube improves. ζ・ is preferable because it can reduce the amount of metal particles that fall off.
ここで、前記管としては、無酸素鋼、純ＡＩ。Here, the pipe is made of oxygen-free steel or pure AI.
Ａｊ！−１，２５４Ｍｎｒｚどノ金属１１で＊ ｌｔ！
、内面溝付き管などが用いられるが、内面溝付き管を使
用した場合には、金属粒が溝の上部や低部あるいは壁部
等に付着接合されるため、管内面が非常に多孔質構造と
なり突起も多くなるのでより一層の核沸騰効果や乱流効
果が得られ、伝熱効果が非常に改善される。Aj! -1,254Mnrz Donometal 11*lt!
, pipes with internal grooves are used, but when using pipes with internal grooves, the metal particles adhere and bond to the top, bottom, or wall of the groove, so the inside of the pipe has a very porous structure. As the number of protrusions increases, further nucleate boiling effects and turbulent flow effects can be obtained, and the heat transfer effect is greatly improved.
まＴ：、、細線には、無酸素鋼、Ｃｕ−１０％Ｎｉ。MaT: The thin wire is made of oxygen-free steel and Cu-10%Ni.
純ｋｌ、Ａｌ−１，２５１Ｍｎ等の金属線があげられる
。Examples include metal wires such as pure Kl, Al-1, and 251Mn.
つぎに、具体例を挙げて前記のような本発明の特徴をよ
り明らかにする。Next, specific examples will be given to clarify the characteristics of the present invention as described above.
第１図に示すよ５に、組成と大きさをそれぞれ変えた金
属管に、違った組成と径をもつ１１１Ｂ−をそれぞれ組
み合わせて、以下の手順によって熱交換器用伝熱管を得
た。As shown in FIG. 1, metal tubes 5 having different compositions and sizes were combined with 111B- having different compositions and diameters, and heat exchanger tubes for heat exchangers were obtained by the following procedure.
丁なわち、ＷＪ２図に示す工うに、金属管ｌ内に細１Ｉ
Ｉ２ヲ挿通し、該ａｍ２（７）ＡｍｌＣＩｏ、０００Ｖ
の高電圧をかけ、コンデンサの放１１Ｌを利用して大電
流を流し、ｇ時に細線を爆発的に浴融させて。In other words, as shown in Figure WJ2, there is a thin 1I inside the metal pipe.
Insert I2, am2 (7) AmlCIo, 000V
Applying a high voltage of , a large current flows using the capacitor's discharge 11L, and the thin wire is explosively melted in the bath at g.
飛散した金属粒を管内面に接合させた。The scattered metal particles were bonded to the inner surface of the tube.
なお％第１図には、前記手順の回数（丁なわち処理回数
〕及びその時の管内の雰囲気もあわせて示した。筐た実
施例４の金属管は内面溝付き管であり、１［さは０，２
ｒｎｍ、ｎピッチは０．５ｍｍである。Note that Fig. 1 also shows the number of times the above procedure was performed (in other words, the number of treatments) and the atmosphere inside the pipe at that time. is 0,2
rnm, n pitch is 0.5 mm.
七の結果得られた製品を、第３図に示す伝熱特注試験装
置で試験した。この装置中、Ｔは温度センサ、Ｐは圧力
計、ＰＤは差圧計、３はポンプ、４はパルプ、５は流量
計、６は膨張弁、７はコンプレッサ、８はサブコンデン
サ、９はサブエバボイラ、ＩＯは恒温水槽であり、［【
が供試管としての伝熱管である。そして、蒸発および凝
縮試験は、５ｍの直管（伝熱管ンを使用し、冷媒Ｒ２２
にて次の試験条件にて実施したつ
蒸発試験 凝縮試験
冷媒流量（ｋｇ刈）４０，６０．８０ ４０，６０．８
０蒸発温度（’Ｃ） ５ ５付近
過熱度 （’Ｃ） ５±０．５ ５付近凝縮温度（’Ｃ
） ４５ ４５
過冷却度（０Ｃ） １０±０．５ ５±０．５水量Ｃ１
Ｚ分） ９，０ ９，０
水 温 （’Ｃ） １５〜２５ ２５〜３５この場合、
それぞれの冷媒流ｔ（ｋｇ／Ｈ）毎に冷媒系が安定する
ように水＠を制御し、この恒温水は供試管１．１に流入
する冷媒に対し向流となるようバルブ操作した。第３図
中矢印Ａ、Ｉは。The product obtained in step 7 was tested using a custom heat transfer test device shown in FIG. In this device, T is a temperature sensor, P is a pressure gauge, PD is a differential pressure gauge, 3 is a pump, 4 is a pulp, 5 is a flow meter, 6 is an expansion valve, 7 is a compressor, 8 is a sub-condenser, 9 is a sub-evaporator boiler, IO is a constant temperature water tank, [[
is the heat exchanger tube as the test tube. Evaporation and condensation tests were conducted using a 5 m straight pipe (heat transfer tube) using refrigerant R22.
Evaporation test conducted under the following test conditions Condensation test refrigerant flow rate (kg cutting) 40, 60.80 40, 60.8
0 Evaporation temperature ('C) 5 Superheat degree near 5 ('C) 5±0.5 Condensation temperature near 5 ('C)
) 45 45 Degree of supercooling (0C) 10±0.5 5±0.5 Water amount C1
Z minutes) 9,0 9,0 Water temperature ('C) 15~25 25~35 In this case,
Water was controlled so that the refrigerant system was stabilized for each refrigerant flow t (kg/H), and a valve was operated so that this constant temperature water flowed countercurrently to the refrigerant flowing into the test tube 1.1. Arrows A and I in Figure 3 are.
それぞれ蒸発試験の場合の冷媒および水の流れ番方向な
示し、矢印Ｂ、１：ｒはそれぞれ縦ｌａ試験の場合の冷
媒および水の流れる方向？示している〇この試験の結果
、本発明の方法によって得られた伝熱貢は、第４図に示
すようは優れた伝熱特性な有することがわかった。The arrows B and 1:r indicate the flow directions of the refrigerant and water in the case of the evaporation test, respectively. As a result of this test, it was found that the heat transfer plate obtained by the method of the present invention had excellent heat transfer properties as shown in FIG.
以上説明したように１本発明によれば、管内に粉粒捧を
接合させてなる伝熱管を有効、適切に得ることができる
。As explained above, according to the present invention, it is possible to effectively and appropriately obtain a heat exchanger tube formed by joining powder particles inside the tube.
第１図は本発明の詳細な説明するための図、第２図は本
発明の詳細な説明するために示した縦断面図、第３図は
伝熱特注？：調べるための試験装置の図、第４図は試験
装置によって得られた本発明方法による伝熱管の伝熱特
性と従来の伝熱管の伝熱′＃注とを比較するための図で
ある。
■・・・金属管、２・・・細−０
出願人 三菱金属株式会社Fig. 1 is a diagram for explaining the present invention in detail, Fig. 2 is a longitudinal sectional view shown for explaining the invention in detail, and Fig. 3 is a custom-made heat transfer diagram. Figure 4 is a diagram for comparing the heat transfer characteristics of the heat transfer tube according to the method of the present invention obtained by the test device with the heat transfer characteristics of the conventional heat transfer tube. ■...Metal pipe, 2...Thin-0 Applicant Mitsubishi Metals Corporation
Claims (1)
的に高電圧をかけて入電流を流子ことにより５細巌を爆
発的に浴融させて周囲に飛散させ、その飛散金属粒を管
内面に付着接合せしめろことを特徴とする熱交換器用伝
熱管の製造方法っ（２，）前記管、内に不活性ガス又は
還元性ガスを入れて１１１１Ｂ−に高電圧をかけること
を特徴とする特許請求の範囲第１項に記載の熱交換器用
伝熱管の製造方法。(1,) A thin St is passed through the tube, and a high voltage is applied instantaneously to both ends of this thin wire to flow the incoming current, causing the five thin wire to melt explosively and scatter around. A method for manufacturing a heat transfer tube for a heat exchanger, characterized in that metal particles are adhered and bonded to the inner surface of the tube. A method for manufacturing a heat exchanger tube for a heat exchanger according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59110112A JPS60255965A (en) | 1984-05-30 | 1984-05-30 | Manufacture of heat exchanger tube for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59110112A JPS60255965A (en) | 1984-05-30 | 1984-05-30 | Manufacture of heat exchanger tube for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60255965A true JPS60255965A (en) | 1985-12-17 |
Family
ID=14527342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59110112A Pending JPS60255965A (en) | 1984-05-30 | 1984-05-30 | Manufacture of heat exchanger tube for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60255965A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02258966A (en) * | 1989-03-30 | 1990-10-19 | Mitsui Eng & Shipbuild Co Ltd | Wire explosion spraying method for inside surface of capillary |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028438A (en) * | 1973-07-16 | 1975-03-24 | ||
| JPS52117859A (en) * | 1976-03-31 | 1977-10-03 | Hitachi Metals Ltd | Method of making thin alloy plate |
| JPS5343634A (en) * | 1976-09-30 | 1978-04-19 | Eutectic Corp | Iron metal substrate coated with alloy |
| JPS54107939A (en) * | 1978-02-13 | 1979-08-24 | Nippon Tungsten | Wire explosion type molten projection method |
-
1984
- 1984-05-30 JP JP59110112A patent/JPS60255965A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5028438A (en) * | 1973-07-16 | 1975-03-24 | ||
| JPS52117859A (en) * | 1976-03-31 | 1977-10-03 | Hitachi Metals Ltd | Method of making thin alloy plate |
| JPS5343634A (en) * | 1976-09-30 | 1978-04-19 | Eutectic Corp | Iron metal substrate coated with alloy |
| JPS54107939A (en) * | 1978-02-13 | 1979-08-24 | Nippon Tungsten | Wire explosion type molten projection method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02258966A (en) * | 1989-03-30 | 1990-10-19 | Mitsui Eng & Shipbuild Co Ltd | Wire explosion spraying method for inside surface of capillary |
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