JPS6179993A - Fin tube heat exchanger - Google Patents
Fin tube heat exchangerInfo
- Publication number
- JPS6179993A JPS6179993A JP20572284A JP20572284A JPS6179993A JP S6179993 A JPS6179993 A JP S6179993A JP 20572284 A JP20572284 A JP 20572284A JP 20572284 A JP20572284 A JP 20572284A JP S6179993 A JPS6179993 A JP S6179993A
- Authority
- JP
- Japan
- Prior art keywords
- fin
- tube
- long axis
- thin
- circular
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular 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
- F28F1/24—Tubular 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 and extending transversely
- F28F1/32—Tubular 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 and extending transversely the means having portions engaging further tubular elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は楕円・長円・円弧円等の非円形断面の管を用い
た場合に管を備えたフィンチューブ熱交換器に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fin-tube heat exchanger equipped with a tube having a non-circular cross section such as an ellipse, an ellipse, or an arc.
従来例の構成とその問題点
従来のフィンチューブ熱交換器は第3図に示すように一
定間隔で平行に並べたアルミニウム等の薄板で作られた
平行フィン群1と、このフィン群1に直角に挿入した銅
等の薄肉円管の伝熱管群2とで構成され、空気はフィン
1間を矢印方向に流動して管内流体と熱交換を行なうよ
うになっている。Structure of the conventional example and its problems As shown in Figure 3, the conventional fin-tube heat exchanger has a group of parallel fins 1 made of thin plates such as aluminum arranged in parallel at regular intervals, and a group of parallel fins 1 made of thin plates of aluminum etc. The heat exchanger tube group 2 is a thin-walled circular tube made of copper or the like inserted into the tube, and air flows between the fins 1 in the direction of the arrow to exchange heat with the fluid inside the tubes.
ところで近年の熱交換器に対する小型・高性能化の要求
から、フィン群の間隔を細かくして同一容積でよシ多く
のフィンを使用し、熱交換器性能を高めるものが多用さ
れるようになってきだが、これに伴って空気側の圧力損
失が増大する欠点があり、これを解消し、あわせてフィ
ンの伝熱性能を高める一方法として管に楕円・長円・円
弧円等の非円形断面形状のものを使用することがある。By the way, in recent years, due to the demand for smaller size and higher performance for heat exchangers, there has been an increase in the use of devices that increase the performance of heat exchangers by narrowing the spacing between fin groups and using more fins in the same volume. However, this has the disadvantage that the pressure loss on the air side increases.One way to solve this problem and also improve the heat transfer performance of the fins is to make the tubes have non-circular cross sections such as ellipses, ellipses, and circular arcs. Shapes may be used.
第4図はその一例として楕円管を用いた場合の熱交換器
の断面の管周辺部分の拡大図を示す。なお図中の3は管
との密着を得るためにフィンの管挿入孔周囲にフィン材
を立ち上げて形成したフィンカラーである。As an example, FIG. 4 shows an enlarged view of a section around the tube of a heat exchanger using an elliptical tube. In addition, 3 in the figure is a fin collar formed by raising a fin material around the tube insertion hole of the fin in order to obtain close contact with the tube.
この第4図のような熱交換器をルームエアコン等の凝縮
器として用いた場合、通常でも管内の冷媒圧力は16〜
20にμ肩G程度となり、ルームエアコンの過負荷運転
時には24〜2 e Kp、z福G程度まで上昇するこ
とがあり、非円形断面の管ではこの圧力が管内側から外
側に向ってかかるので力は短軸方向く第6図のA−A’
方向)の方が長軸方向く第5図のB−B’方向)よりも
大きくなり、管はその断面が丸くなろうとして結果的に
短軸方向に延び、長軸方向に縮むように変形する。その
結果、フィンカラー3と管2との密着は短軸上の部分(
第5図の0部)付近が良くなり、逆に長軸上の部分(第
6図のD部)付近が悪くなり、従ってD部ではフィン1
と管2の間の伝熱抵抗が大きくなってしまうという問題
点を有していた。When a heat exchanger like the one shown in Figure 4 is used as a condenser for a room air conditioner, the refrigerant pressure in the pipes is normally between 16 and
When the room air conditioner is overloaded, it can rise to about 24 to 2 e Kp, z Fuku G, and in a pipe with a non-circular cross section, this pressure is applied from the inside of the pipe to the outside. The force is in the short axis direction, A-A' in Figure 6.
direction) becomes larger than the long axis direction (B-B' direction in Figure 5), and the tube's cross section tries to become round, resulting in it deforming so that it extends in the short axis direction and contracts in the long axis direction. . As a result, the close contact between the fin collar 3 and the tube 2 is limited to the portion on the short axis (
The area near the 0 part in Fig. 5) becomes better, and conversely, the area on the long axis (the D part in Fig. 6) becomes worse. Therefore, in the D part, the fin 1
There was a problem in that the heat transfer resistance between the pipe 2 and the pipe 2 became large.
発明の目的
そこで本発明は上記従来の問題点を解消し、楕円等の非
円形断面の管の長軸上においてもフィンカラーと管との
密着性を良好に保つことができるフィンチューブ熱交換
器を提供するものである。Purpose of the Invention The present invention solves the above conventional problems and provides a fin-tube heat exchanger that can maintain good adhesion between the fin collar and the tube even on the long axis of the tube with a non-circular cross section such as an ellipse. It provides:
発明の構成
この目的を達成するため本発明のフィンチューブ熱交換
器は、アルミニウム等の薄板のフィンを多数積層して成
るフィン群と、これに所定の配列に従って多数の楕円・
長円・円弧臼等の非円形断面形状の銅等の薄肉管を挿入
して成るフィンチューブ熱交換器において、フィン面の
非円形断面の長軸上に波状のプレス加工を施した構成で
あり、この波状プレス部分のスプリング効果により薄肉
管の長軸方向とフィンとの密着性を良好に保つことがで
きる。Structure of the Invention In order to achieve this object, the fin-tube heat exchanger of the present invention includes a fin group consisting of a large number of laminated fins made of thin plates such as aluminum, and a number of ellipsoids and fins arranged in a predetermined arrangement.
A fin-tube heat exchanger is made by inserting a thin-walled tube made of copper or other material with a non-circular cross-section such as an oval or circular arc mortar, and has a structure in which a wavy press is applied to the long axis of the non-circular cross-section of the fin surface. Due to the spring effect of this wavy pressed portion, good adhesion between the longitudinal direction of the thin-walled tube and the fins can be maintained.
実施例の説明
以下本発明の一実施例を第1図、第2図により説明する
。第1図、第2図においてフィン4の非円形孔の長軸上
外方に一定幅の波状プレス加工部5を設けている。この
プレス加工部6のスプリング効果によって長軸上に内側
(管方向)に向ってフィンカラー6を押しつける力(第
2図に矢印で示す)が働らくものである。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In FIGS. 1 and 2, a wavy pressed portion 5 having a constant width is provided outwardly on the long axis of the non-circular hole of the fin 4. Due to the spring effect of this pressed part 6, a force (indicated by the arrow in FIG. 2) that presses the fin collar 6 inward (in the tube direction) on the long axis is exerted.
上記構成のフィンを多数枚積層したフィンチューブ熱交
換器は、フィンカラー6を長軸方向の内方に向って押し
つける力が働くため、管内圧により管が変形し、長軸上
のフィンカラー6と薄肉管2が接する部分において密着
性が悪くなることを防止することができる。In a fin-tube heat exchanger in which a large number of fins having the above structure are stacked, a force that presses the fin collars 6 inward in the long axis direction causes the tube to deform due to the internal pressure, causing the fin collars 6 on the long axis to deform. It is possible to prevent poor adhesion at the portion where the thin-walled tube 2 and the thin-walled tube 2 are in contact with each other.
発明の効果
以上、実施例の説明からも明らかなように、本発明は非
円形断面形状の管を用いるフィンチューブ熱交換器のフ
ィン面の非円形孔の長軸上外方に波状のプレス加工を施
し、スプリング効果をもたせることにより、管内圧によ
る薄肉管の変形によるフィンとの密着性の低下を防止す
ることができるものである。In addition to the effects of the invention, as is clear from the description of the embodiments, the present invention is a fin-tube heat exchanger that uses tubes with a non-circular cross-sectional shape. By providing a spring effect, it is possible to prevent a decrease in adhesion with the fins due to deformation of the thin-walled tube due to internal pressure.
第1図は本発明における一実施例のフィンのフィンカラ
ー周辺の拡大断面図、第2図は第4図の楕円長軸方向に
おける断面図、第3図は従来のフィンチューブ熱交換器
の斜視図、第4図は従来例の楕円管を用いたフィンチュ
ーブ熱交換器の管周辺部断面図、第5図は第4図の楕円
管が内圧を受けた場合の変形の説明図である。
4・・・・・フィン、5・・・・・・波状のプレス加工
部、6・・非円形断面形状の薄肉管。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図
第2図Fig. 1 is an enlarged cross-sectional view of the fin collar and surrounding area of a fin according to an embodiment of the present invention, Fig. 2 is a cross-sectional view in the long axis direction of the ellipse of Fig. 4, and Fig. 3 is a perspective view of a conventional fin-tube heat exchanger. 4 is a sectional view of the tube peripheral portion of a conventional fin tube heat exchanger using elliptical tubes, and FIG. 5 is an explanatory diagram of deformation when the elliptical tube of FIG. 4 is subjected to internal pressure. 4... Fin, 5... Wavy pressed part, 6... Thin walled tube with non-circular cross section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2
Claims (1)
フィン群と、このフィン群に所定の配列に従って貫挿す
る多数の楕円・長円・円弧円等の非円形断面形状の銅等
の薄肉管と、この薄肉管が一貫挿するフィン面の非円形
孔の長軸上外方に波状のプレス加工を施こしたフィンチ
ューブ熱交換器。A fin group consisting of a large number of laminated thin plate fins made of aluminum, etc., and a large number of thin-walled pipes made of copper etc. with non-circular cross-sectional shapes such as ellipses, ellipses, circular arcs, etc. that penetrate the fin group according to a predetermined arrangement. , a fin-tube heat exchanger in which a wavy press is applied to the outside of the long axis of the non-circular hole on the fin surface into which this thin-walled tube is inserted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20572284A JPS6179993A (en) | 1984-09-27 | 1984-09-27 | Fin tube heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20572284A JPS6179993A (en) | 1984-09-27 | 1984-09-27 | Fin tube heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6179993A true JPS6179993A (en) | 1986-04-23 |
Family
ID=16511597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20572284A Pending JPS6179993A (en) | 1984-09-27 | 1984-09-27 | Fin tube heat exchanger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6179993A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7004242B2 (en) * | 2004-06-14 | 2006-02-28 | Advanced Heat Transfer, Llc | Enhanced heat exchanger apparatus and method |
-
1984
- 1984-09-27 JP JP20572284A patent/JPS6179993A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7004242B2 (en) * | 2004-06-14 | 2006-02-28 | Advanced Heat Transfer, Llc | Enhanced heat exchanger apparatus and method |
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