JPH06198376A - Metallic tube with fin for heat exchanger and its manufacture - Google Patents
Metallic tube with fin for heat exchanger and its manufactureInfo
- Publication number
- JPH06198376A JPH06198376A JP34915792A JP34915792A JPH06198376A JP H06198376 A JPH06198376 A JP H06198376A JP 34915792 A JP34915792 A JP 34915792A JP 34915792 A JP34915792 A JP 34915792A JP H06198376 A JPH06198376 A JP H06198376A
- Authority
- JP
- Japan
- Prior art keywords
- slits
- tube material
- fin
- heat exchanger
- tube
- 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
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、たとえばヒートパイ
プ式熱交換器や、フィンチューブ式熱交換器に用いられ
るフィン付き金属管およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pipe type heat exchanger, a finned metal tube used in a fin tube type heat exchanger, and a method for manufacturing the same.
【0002】[0002]
【従来の技術】従来、この種熱交換器に使用されるフィ
ン付き金属管として、外周面にスパイラル状フィンが、
転造丸ダイスを用いた転造加工により一体に形成された
ものが広く知られている。2. Description of the Related Art Conventionally, as finned metal tubes used in this type of heat exchanger, spiral fins are provided on the outer peripheral surface.
One that is integrally formed by a rolling process using a rolling round die is widely known.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、このフ
ィン付き金属管を上記のような熱交換器に使用した場
合、フィンの表面に厚い境界層が発生するので、熱交換
性能が十分ではないという問題があった。However, when this finned metal tube is used in the heat exchanger as described above, a thick boundary layer is generated on the surface of the fin, so that the heat exchange performance is not sufficient. was there.
【0004】この発明の目的は、上記問題を解決した熱
交換器用フィン付き金属管およびその製造方法を提供す
ることにある。An object of the present invention is to provide a finned metal tube for a heat exchanger and a method for manufacturing the same, which solves the above problems.
【0005】[0005]
【課題を解決するための手段】この発明による熱交換器
用フィン付き金属管は、外周面にスパイラル状フィンが
一体に形成されており、スパイラル状フィンに、その周
縁側から複数条のスリットが全体としてねじれ状となる
ように形成されているものである。DISCLOSURE OF THE INVENTION In a metal tube with fins for a heat exchanger according to the present invention, a spiral fin is integrally formed on the outer peripheral surface, and the spiral fin has a plurality of slits from the peripheral side thereof as a whole. Is formed to have a twisted shape.
【0006】この発明による熱交換器用フィン付き金属
管の製造方法は、金属管素材の外周面に、長さ方向にの
びる凹溝を円周方向に間隔をおいて複数形成しておき、
この金属管素材に転造丸ダイスを用いた転造加工を施す
ことにより、複数条のスリットを有するスパイラル状フ
ィンを形成することを特徴とするものである。In the method for manufacturing a finned metal pipe for a heat exchanger according to the present invention, a plurality of concave grooves extending in the length direction are formed at intervals in the circumferential direction on the outer peripheral surface of the metal pipe material.
This metal tube material is characterized by forming a spiral fin having a plurality of slits by performing a rolling process using a rolling round die.
【0007】[0007]
【作用】外周面に一体に形成されたスパイラル状フィン
に、その周縁側から複数条のスリットが全体としてねじ
れ状となるように形成されていると、熱交換器に使用し
た場合に発生する境界層が、スリットの部分で切れるこ
とになり、したがってその厚さの増大が防止される。When the spiral fin integrally formed on the outer peripheral surface is formed with a plurality of slits in a spiral shape from the peripheral side, the boundary generated when used in the heat exchanger The layer will break at the slit, thus preventing an increase in its thickness.
【0008】また、金属管素材の外周面に、長さ方向に
のびる凹溝を円周方向に間隔をおいて一体に形成してお
き、この金属管素材に転造丸ダイスを用いた転造加工を
施すと、スパイラル状フィンの形成と同時に複数条のス
リットを形成することができる。Further, concave grooves extending in the length direction are integrally formed on the outer peripheral surface of the metal tube material at intervals in the circumferential direction, and the metal tube material is rolled using a rolling round die. When processed, a plurality of slits can be formed simultaneously with the formation of the spiral fin.
【0009】[0009]
【実施例】以下、この発明の実施例を、図面を参照して
説明する。この実施例は、この発明をフィン付き金属2
重管に適用したものである。Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is a finned metal 2
It is applied to heavy pipes.
【0010】図1および図2はフィン付き金属2重管を
示し、図3および図4はその製造方法を示す。1 and 2 show a metal double tube with fins, and FIGS. 3 and 4 show a manufacturing method thereof.
【0011】図1および図2において、フィン付き金属
2重管(1) は、銅(銅合金も含む。以下同じ)製内管
(2) と、内管(2) の周囲に密に嵌め被せられ、かつ外周
面にスパイラル状フィン(4) が一体に形成されたアルミ
ニウム(アルミニウム合金も含む。以下同じ)製外管
(3) とよりなる。外管(3) の外周面に形成されたスパイ
ラル状フィン(4) に、その周縁側から複数条のスリット
(5) が全体としてねじれ状となるように形成されてい
る。スリット(5) の数は図示のものに限られない。In FIGS. 1 and 2, a metal double tube with fins (1) is an inner tube made of copper (including copper alloy; the same applies hereinafter).
(2) and an outer tube made of aluminum (including an aluminum alloy; the same applies hereinafter) that is tightly fitted around the inner tube (2) and has spiral fins (4) integrally formed on the outer peripheral surface.
It consists of (3). On the spiral fin (4) formed on the outer peripheral surface of the outer tube (3), multiple slits are provided from the peripheral side.
(5) is formed to have a twisted shape as a whole. The number of slits (5) is not limited to that shown in the figure.
【0012】次に、図3および図4を参照してフィン付
き金属2重管(1) の製造方法について説明する。Next, a method of manufacturing the finned metal double tube (1) will be described with reference to FIGS.
【0013】まず、銅製内管素材(10)と、アルミニウム
製外管素材(11)とを用意しておく。外管素材(11)の外周
面に、長さ方向にのびる凹溝(12)を円周方向に間隔をお
いて複数形成しておく。凹溝(12)を有する外管素材(11)
は、たとえば押出により成形される。凹溝(12)の数は、
形成すべきスリット(5) の数と同一にしておく。First, a copper inner tube material (10) and an aluminum outer tube material (11) are prepared. On the outer peripheral surface of the outer tube material (11), a plurality of concave grooves (12) extending in the length direction are formed at intervals in the circumferential direction. Outer tube material (11) with groove (12)
Is molded, for example, by extrusion. The number of grooves (12) is
The number is the same as the number of slits (5) to be formed.
【0014】そして、内管素材(10)をマンドレル(13)の
周囲に緩く嵌め被せるとともに、外管素材(11)を内管素
材(10)の周囲に緩く嵌め被せる。ついで、3つの転造丸
ダイス(14)を回転させておき、両素材(10)(11)を移動さ
せてこれらのダイス(14)間に侵入させる。すると、外管
素材(11)の外周面に、複数条のスリット(5) を有するス
パイラル状フィン(4) が形成される。なお、転造加工の
さいに、摩擦によりスリット(5) が全体としてねじれ状
となる。また、転造丸ダイス(14)を通過するさいに、内
管素材(10)がマンドレル(13)の外周面に密着させられる
とともに、外管素材(11)が内管素材(10)に密着させられ
る。こうして、フィン付き金属2重管(1) が製造され
る。Then, the inner tube material (10) is loosely fitted around the mandrel (13), and the outer tube material (11) is loosely fitted around the inner tube material (10). Then, the three rolled round dies (14) are rotated, and both materials (10) and (11) are moved so as to enter between these dies (14). Then, a spiral fin (4) having a plurality of slits (5) is formed on the outer peripheral surface of the outer tube material (11). During the rolling process, the slit (5) becomes twisted as a whole due to friction. When passing through the rolled round die (14), the inner pipe material (10) is brought into close contact with the outer peripheral surface of the mandrel (13), and the outer pipe material (11) is brought into close contact with the inner pipe material (10). To be made. In this way, the finned metal double tube (1) is manufactured.
【0015】上記において、転造加工のさいに、凹溝(1
2)の底部に亀裂が発生し、この亀裂が製造されたフィン
付き2重管(1) の外管(3) の周壁にまで及ぶことがある
が、2重管式となっているので、内管(2) 内の流体の漏
れを防止できる。In the above, during the rolling process, the concave groove (1
A crack may occur at the bottom of 2) and the crack may extend to the peripheral wall of the outer tube (3) of the finned double tube (1), but since it is a double tube type, The leakage of fluid in the inner pipe (2) can be prevented.
【0016】上記実施例においては、内管(2) が銅製で
外管(3) がアルミニウム製であるが、これに限るもので
はなく、適宜変更可能である。なお、内管(2) の素材は
耐食性および強度を考慮して決められるものであり、内
管(3) は合成樹脂で形成されることもある。また、上記
実施例においては、この発明をフィン付き金属2重管に
適用した場合が示されているが、これに限るものではな
く、1重金属管や、3重以上の金属管にも適用可能であ
る。In the above embodiment, the inner pipe (2) is made of copper and the outer pipe (3) is made of aluminum. However, the present invention is not limited to this and can be changed as appropriate. The material of the inner pipe (2) is determined in consideration of corrosion resistance and strength, and the inner pipe (3) may be made of synthetic resin. Further, in the above embodiment, the case where the present invention is applied to a metal double tube with fins is shown, but the present invention is not limited to this, and can be applied to a single metal tube or a metal tube having three or more layers. Is.
【0017】[0017]
【発明の効果】この発明のフィン付き金属管によれば、
上述のように、熱交換器に使用した場合に発生する境界
層が、スリットの部分で切れることになり、したがって
その厚さの増大が防止されるので、熱交換性能が向上す
る。According to the finned metal tube of the present invention,
As described above, the boundary layer generated when used in the heat exchanger is broken at the slit portion, and therefore the increase in the thickness thereof is prevented, so that the heat exchange performance is improved.
【0018】また、この発明の方法によれば、複数条の
スリットを有するスパイラル状フィンを有する金属管を
簡単に製造することができる。Further, according to the method of the present invention, it is possible to easily manufacture a metal tube having a spiral fin having a plurality of slits.
【図1】この発明によるフィン付き2重管の一部切欠き
斜視図である。FIG. 1 is a partially cutaway perspective view of a double tube with fins according to the present invention.
【図2】同じく横断面図である。FIG. 2 is a transverse sectional view of the same.
【図3】この発明によるフィン付き2重管の製造方法を
示す内管素材の周囲に外管素材を嵌め被せた段階での横
断面図である。FIG. 3 is a transverse cross-sectional view showing a method of manufacturing a double tube with fins according to the present invention when an outer tube material is fitted around an inner tube material.
【図4】この発明によるフィン付き2重管の製造方法を
示すスパイラル状フィンを形成する段階での斜視図であ
る。FIG. 4 is a perspective view showing a method of manufacturing a double tube with fins according to the present invention at a stage of forming spiral fins.
1 フィン付き2重管 4 スパイラル状フィン 5 スリット 1 Double tube with fin 4 Spiral fin 5 Slit
Claims (2)
成されており、スパイラル状フィンに、その周縁側から
複数条のスリットが全体としてねじれ状となるように形
成されている熱交換器用フィン付き金属管。1. A fin for a heat exchanger, wherein a spiral fin is integrally formed on an outer peripheral surface, and a plurality of slits are formed in a spiral shape from the peripheral side of the spiral fin as a whole. Metal tube.
る凹溝を円周方向に間隔をおいて複数形成しておき、こ
の金属管素材に転造丸ダイスを用いた転造加工を施すこ
とにより、複数条のスリットを有するスパイラル状フィ
ンを形成することを特徴とする熱交換器用フィン付き金
属管の製造方法。2. A rolling process using a rolling round die for the metal pipe material, wherein a plurality of concave grooves extending in the length direction are formed at intervals in the circumferential direction on the outer peripheral surface of the metal pipe material. The method for producing a metal tube with a fin for a heat exchanger, characterized in that a spiral fin having a plurality of slits is formed by applying.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34915792A JPH06198376A (en) | 1992-12-28 | 1992-12-28 | Metallic tube with fin for heat exchanger and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34915792A JPH06198376A (en) | 1992-12-28 | 1992-12-28 | Metallic tube with fin for heat exchanger and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06198376A true JPH06198376A (en) | 1994-07-19 |
Family
ID=18401860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34915792A Pending JPH06198376A (en) | 1992-12-28 | 1992-12-28 | Metallic tube with fin for heat exchanger and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06198376A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020048366A (en) * | 2002-06-04 | 2002-06-22 | 핀튜브텍(주) | Fin tube type heat exchanger and airconditioner and refrigerator using the heat exchanger |
KR20030042841A (en) * | 2001-11-24 | 2003-06-02 | 핀튜브텍(주) | Intercooler For Diesel Engine And Fin-Tube Manufacturing Method |
KR20040029834A (en) * | 2002-10-02 | 2004-04-08 | 주식회사 경동보일러 | High Finned Tube Structure of Gas Boiler |
KR20040029835A (en) * | 2002-10-02 | 2004-04-08 | 주식회사 경동보일러 | High Finned Tube Structure of Gas Boiler |
KR100640290B1 (en) * | 2005-01-29 | 2006-11-10 | 강림기연 주식회사 | Manufacture method of tube using for heat exchanger |
KR100721032B1 (en) * | 2004-12-10 | 2007-06-27 | 이주헌 | Fin-tube in the aluminium heat exchanger and aluminium heat exchanger utilizing thereof |
JP2008542034A (en) * | 2005-06-10 | 2008-11-27 | エジョット ゲーエムベーハー ウント コンパニー カーゲー | Hollow bolt with longitudinal holes |
CN103317047A (en) * | 2013-07-02 | 2013-09-25 | 山东美陵化工设备股份有限公司 | Device and method for rolling conical-fin condensing tubes |
-
1992
- 1992-12-28 JP JP34915792A patent/JPH06198376A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030042841A (en) * | 2001-11-24 | 2003-06-02 | 핀튜브텍(주) | Intercooler For Diesel Engine And Fin-Tube Manufacturing Method |
KR20020048366A (en) * | 2002-06-04 | 2002-06-22 | 핀튜브텍(주) | Fin tube type heat exchanger and airconditioner and refrigerator using the heat exchanger |
KR20040029834A (en) * | 2002-10-02 | 2004-04-08 | 주식회사 경동보일러 | High Finned Tube Structure of Gas Boiler |
KR20040029835A (en) * | 2002-10-02 | 2004-04-08 | 주식회사 경동보일러 | High Finned Tube Structure of Gas Boiler |
KR100721032B1 (en) * | 2004-12-10 | 2007-06-27 | 이주헌 | Fin-tube in the aluminium heat exchanger and aluminium heat exchanger utilizing thereof |
KR100640290B1 (en) * | 2005-01-29 | 2006-11-10 | 강림기연 주식회사 | Manufacture method of tube using for heat exchanger |
JP2008542034A (en) * | 2005-06-10 | 2008-11-27 | エジョット ゲーエムベーハー ウント コンパニー カーゲー | Hollow bolt with longitudinal holes |
KR101311926B1 (en) * | 2005-06-10 | 2013-09-25 | 에요트 게엠베하 운트 콤파니 카게 | Hollow bolt comprising a longitudinal bore |
CN103317047A (en) * | 2013-07-02 | 2013-09-25 | 山东美陵化工设备股份有限公司 | Device and method for rolling conical-fin condensing tubes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5975196A (en) | Heat transfer tube | |
US4476704A (en) | Method for producing finned tubes | |
US3407874A (en) | Fin tube assemblage for heat exchangers | |
US6182743B1 (en) | Polyhedral array heat transfer tube | |
US6167950B1 (en) | Heat transfer tube | |
JPH06201286A (en) | Heat transfer pipe | |
KR960001709A (en) | Metal fin tube | |
US1909005A (en) | Method of making corrugated wall tubing | |
JPH06198376A (en) | Metallic tube with fin for heat exchanger and its manufacture | |
US4866830A (en) | Method of making a high performance, uniform fin heat transfer tube | |
JP2012097920A (en) | Heat exchanger | |
US3559437A (en) | Method and apparatus for making heat transfer tubing | |
US6427767B1 (en) | Nucleate boiling surface | |
US2362694A (en) | Method of manufacturing tubes for heat exchange devices | |
US4360958A (en) | Method of making heat exchangers | |
JPS6397309A (en) | Production of clad pipe | |
JPH04105734A (en) | Manufacture of heat exchanger | |
JPH11351791A (en) | Aluminum inner face grooved tube | |
US3820215A (en) | Method of making a curved spined heat exchanger tube | |
JP3786789B2 (en) | Internal grooved heat transfer tube and manufacturing method thereof | |
US2025036A (en) | Heat exchanger element | |
GB2160450A (en) | Method of manufacture of an enhanced boiling surface heat transfer tube and the tube produced thereby | |
JPH0345034Y2 (en) | ||
JPS6396492A (en) | Finned tubular body and manufacture thereof | |
JP4251746B2 (en) | Tube manufacturing method |