JPH0717968Y2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH0717968Y2 JPH0717968Y2 JP1989035446U JP3544689U JPH0717968Y2 JP H0717968 Y2 JPH0717968 Y2 JP H0717968Y2 JP 1989035446 U JP1989035446 U JP 1989035446U JP 3544689 U JP3544689 U JP 3544689U JP H0717968 Y2 JPH0717968 Y2 JP H0717968Y2
- Authority
- JP
- Japan
- Prior art keywords
- thin tube
- turbulent flow
- heat exchanger
- inlet
- thin
- 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 - Lifetime
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】 ［考案の目的］ （産業上の利用分野） 本考案は、ラジエータ、オイルクーラ、ヒータ、エアコ
ン等の熱交換器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a heat exchanger such as a radiator, an oil cooler, a heater, and an air conditioner.
（従来の技術） 従来の熱交換器を、第８図および第９図に示す。(Prior Art) A conventional heat exchanger is shown in FIGS. 8 and 9.
第８図に示された従来の熱交換器は、１枚のプレートに
より、フィン部10a,細管部10b,乱流発生装置（インナフ
ィン）10cが形成され、そうして、熱伝達流体は、空間1
1を通る際に乱流化される。この乱流発生装置10cは、乱
流を発生させるために必要なものであるが、熱伝達流体
８の流体抵抗が増加する問題もある。In the conventional heat exchanger shown in FIG. 8, the fin portion 10a, the narrow tube portion 10b, and the turbulent flow generator (inner fin) 10c are formed by one plate, and thus the heat transfer fluid is stored in the space. 1
It becomes turbulent when passing through 1. Although this turbulent flow generator 10c is necessary for generating turbulent flow, it also has a problem that the fluid resistance of the heat transfer fluid 8 increases.
第９図に示された従来の熱交換器は、熱伝達を行なう主
要部の細管15の内部に突起状の乱流発生装置（インナフ
ィン）16を設置し、この乱流発生装置16により、乱流熱
伝達を促進する構造である。すなわち、細管15の内壁に
乱流発生装置16がろう付等により接着されたものであ
り、熱伝達流体８は、空間17を通る際に乱流化される。
この乱流発生装置（インナフィン）16は、個々の細管15
内に一つずつ装着する手間、費用等が生ずる。In the conventional heat exchanger shown in FIG. 9, a turbulent flow generator (inner fin) 16 having a projection shape is installed inside a thin tube 15 of a main part that performs heat transfer. It is a structure that promotes flow heat transfer. That is, the turbulent flow generator 16 is adhered to the inner wall of the thin tube 15 by brazing or the like, and the heat transfer fluid 8 is turbulent when passing through the space 17.
This turbulent flow generator (inner fin) 16 has individual thin tubes 15
The labor and cost of mounting each one inside arises.
（考案が解決しようとする課題） このように、従来の熱交換器は、 細管の内部に突起状の乱流発生装置（インナフィ
ン）を設置するため、この乱流発生装置により熱伝達流
体の抵抗が増し、圧力損失が増加する問題がある。(Problems to be solved by the invention) As described above, in the conventional heat exchanger, since the protruding turbulence generator (inner fin) is installed inside the thin tube, the resistance of the heat transfer fluid is increased by the turbulence generator. And the pressure loss increases.
多数の細管内に個々に乱流発生装置（インナフィ
ン）を設置するため、その取付作業に要する時間と費用
が多大である。Since the turbulent flow generators (inner fins) are individually installed in a large number of thin tubes, the time and cost required for the mounting work are great.
細管内に突起状の乱流発生装置（インナフィン）を
設置するため、細管の断面積を小さくする場合に限度が
あり、多数の細管からなる集合体の構造上、単位体積当
りの放熱、吸熱面積（細管の断面が小さい程大きくな
る）に制限を受けやすい問題がある。Since a projecting turbulent flow generator (inner fin) is installed inside the thin tube, there is a limit when reducing the cross-sectional area of the thin tube. Due to the structure of the assembly of many thin tubes, the heat dissipation and heat absorption area per unit volume There is a problem that (the smaller the cross section of the thin tube, the larger it becomes) is easily restricted.
本考案は、乱流発生装置による流体抵抗の減少を図り、
乱流発生装置の取付容易性を向上し、細管の断面小形化
を可能にする熱交換器を提供することを目的とするもの
である。The present invention aims to reduce the fluid resistance by the turbulence generator,
It is an object of the present invention to provide a heat exchanger that improves the ease of mounting the turbulent flow generator and enables the cross-section of a thin tube to be downsized.
［考案の構成］ （課題を解決するための手段） 請求項１の考案は、熱伝達を行なう流体を通す複数の細
管と、これらの各細管に設けられたフィンとを有する熱
交換器において、前記各細管の入口の直前に、各細管の
入口にて交差する複数の長尺材により格子状に形成され
た乱流発生装置が設けられた構成の熱交換器である。[Means for Solving the Problems] (Means for Solving the Problem) The invention of claim 1 is a heat exchanger having a plurality of thin tubes through which a fluid for heat transfer is passed, and fins provided in each of these thin tubes. A heat exchanger having a structure in which a turbulent flow generation device formed in a lattice shape by a plurality of long materials intersecting at the inlet of each thin tube is provided immediately before the inlet of each thin tube.
請求項２の考案は、熱伝達を行なう流体を通す複数の細
管と、これらの各細管に設けられたフィンとを有する熱
交換器において、前記各細管の入口の直前に乱流発生装
置が設けられ、この乱流発生装置として、細管の断面形
状に近似する形状の乱流発生部が、細管の内壁に対応す
る入口部分に形成された構成の熱交換器である。According to a second aspect of the present invention, in a heat exchanger having a plurality of thin tubes through which a fluid for heat transfer is passed and fins provided in each of these thin tubes, a turbulent flow generator is provided immediately before an inlet of each thin tube. The turbulent flow generator is a heat exchanger having a structure in which a turbulent flow generator having a shape similar to the cross-sectional shape of the thin tube is formed at the inlet portion corresponding to the inner wall of the thin tube.
（作用） 請求項１の考案は、乱流発生装置を各細管の入口にて交
差する複数の長尺材により格子状に形成したから、この
長尺材により各細管内に乱流が発生し、各細管内で乱流
熱伝達が効果的になされる。(Operation) In the invention of claim 1, since the turbulent flow generator is formed in a lattice shape by a plurality of long members intersecting at the entrance of each thin tube, turbulent flow is generated in each thin tube by this long member. Turbulent heat transfer is effectively performed in each thin tube.
請求項２の考案は、乱流発生部が細管の内壁近くの境界
層を乱流化するため、乱流熱伝達をより効果的に行え
る。According to the second aspect of the invention, the turbulent flow generation section makes the boundary layer near the inner wall of the thin tube turbulent, so that the turbulent heat transfer can be performed more effectively.
（実施例） 以下、本考案を第１図乃至第７図に示される実施例を参
照して詳細に説明する。(Embodiment) Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 to 7.
第１図および第２図に示されるように、熱交換器のタン
ク１の下側にプレート２が一体に設けられ、このプレー
ト２に多数の細管３の上部が一体に嵌着されている。こ
の各細管３には多数のフィン４が設けられている。As shown in FIGS. 1 and 2, a plate 2 is integrally provided on the lower side of the tank 1 of the heat exchanger, and the upper portions of many thin tubes 3 are integrally fitted to the plate 2. Each thin tube 3 is provided with a large number of fins 4.
この熱交換器の細管３の上側に格子状の乱流発生装置５
が設けられ、各細管３の入口６の直前に乱流発生装置５
が配置されている。A lattice-shaped turbulent flow generator 5 is provided above the thin tubes 3 of the heat exchanger.
Is provided, and the turbulent flow generator 5 is provided immediately before the inlet 6 of each thin tube 3.
Are arranged.
この乱流発生装置５は、図示された例では、各細管３の
入口６にて交差する複数の線状長尺材（以下、線材とい
う）を格子状に組んで形成し、各線材の両端部を下側に
折曲げて前記プレート２に固定したものである。In the illustrated example, the turbulent flow generator 5 is formed by assembling a plurality of linear long members (hereinafter, referred to as wire rods) that intersect at an inlet 6 of each thin tube 3 in a grid shape, and both ends of each wire rod are formed. The part is bent downward and fixed to the plate 2.
前記タンク１の側面には、タンク入口７が設けられてい
る。A tank inlet 7 is provided on the side surface of the tank 1.
そうして、熱伝達を行なう熱伝達流体８は、前記タンク
入口７よりタンク１内に入り、乱流発生装置５を通り、
細管３の入口６から細管３の内部に入り、この細管内を
通過する段階で、細管３に接しているフィン４の表面か
ら熱を放出または吸収する。Then, the heat transfer fluid 8 for heat transfer enters the tank 1 through the tank inlet 7, passes through the turbulent flow generator 5,
When entering the inside of the thin tube 3 through the inlet 6 of the thin tube 3 and passing through the thin tube 3, heat is released or absorbed from the surface of the fin 4 in contact with the thin tube 3.
第３図は、細管３と格子状の乱流発生装置５との関係を
拡大して示した平面図であり、乱流発生装置５は、短径
方向ワイヤ5aと長径方向ワイヤ5bとが、細管３の２箇所
の円弧部中心で直角に交差されたものである。FIG. 3 is an enlarged plan view showing the relationship between the thin tubes 3 and the lattice-shaped turbulent flow generator 5. In the turbulent flow generator 5, the short diameter wire 5a and the long diameter wire 5b are The thin tubes 3 intersect at right angles at the centers of two arc portions.
第４図は、第３図の短径方向断面（IV−IV断面）を示
し、前記長径方向ワイヤ5bによって渦列8bが細管３の長
径ｂ（第３図に示す）の範囲で発生している。FIG. 4 shows a cross section (IV-IV cross section) in the minor axis direction of FIG. 3, in which the vortex rows 8b are generated within the range of the major axis b (shown in FIG. 3) of the thin tube 3 by the major axis wire 5b. There is.
第５図は、第３図の長径方向断面（Ｖ−Ｖ断面）を示
し、前記短径方向ワイヤ5aによって渦列8aが細管３の短
径ａ（第３図に示す）の範囲で発生している。FIG. 5 shows a cross section (VV cross section) in the major axis direction of FIG. 3, in which the vortex row 8a is generated within the range of the minor axis a (shown in FIG. 3) of the thin tube 3 by the minor diameter wire 5a. ing.
このような長径方向ワイヤ5bによる渦列8bおよび短径方
向ワイヤ5aによる渦列8aは同時に発生し、細管３の内部
は乱流熱伝達状態となる。The vortex street 8b formed by the long-diameter wire 5b and the vortex street 8a formed by the short-diameter wire 5a are simultaneously generated, and the inside of the thin tube 3 is in a turbulent heat transfer state.
次に、本考案の他の実施例として、第６図および第７図
に、それぞれ別の乱流発生装置91,92を示す。この各々
の乱流発生装置91,92は、細管３の断面形状に近似する
形状の乱流発生部91a,92aを、それぞれ各細管３の内壁
に対応する入口部分に形成してなる。各々の乱流発生部
91a,92aは、それぞれ連結部91b,92bによって連結されて
いる。なお、この乱流発生部91a,92aおよび連結部91b,9
2bは、線材でもよいが、熱伝達流体の流れ方向に幅を有
する帯材を使用するとさらによい。Next, as another embodiment of the present invention, different turbulent flow generators 91 and 92 are shown in FIGS. 6 and 7, respectively. Each of the turbulent flow generators 91, 92 is formed by forming turbulent flow generating portions 91a, 92a having a shape similar to the cross-sectional shape of the thin tube 3 at the inlet portion corresponding to the inner wall of each thin tube 3. Each turbulence generator
91a and 92a are connected by connecting portions 91b and 92b, respectively. The turbulent flow generating portions 91a and 92a and the connecting portions 91b and 9b
The wire 2b may be a wire, but it is more preferable to use a band having a width in the flow direction of the heat transfer fluid.
そうして、前記各々の乱流発生部91a,92aが細管３の内
壁近くの境界層を乱流化し、乱流熱伝達をより効果的に
行なえるようにしている。As a result, the turbulent flow generating portions 91a and 92a make the boundary layer near the inner wall of the thin tube 3 turbulent so that the turbulent heat transfer can be performed more effectively.
［考案の効果］ 請求項１の考案によれば、細管の入口の直前に乱流発生
装置を設け、従来のように細管内に乱流発生装置を設置
しないようにしたから、熱伝達する流体の抵抗が少く、
圧力損失の少い乱流熱伝達が可能となり、小型の熱交換
器を製作できる。さらに、細管内に乱流発生装置がない
ので、個々の細管の断面積を小さくして、その総数を増
やすことにより、単位体積当りの放熱、吸熱面積を大き
くすることができ、熱交換器としての性能の向上も図れ
る。[Advantage of the Invention] According to the invention of claim 1, the turbulent flow generator is provided immediately before the inlet of the thin tube, and the turbulent flow generator is not installed in the thin tube as in the conventional case. Has less resistance,
Turbulent heat transfer with little pressure loss is possible, and a small heat exchanger can be manufactured. Furthermore, since there is no turbulent flow generator inside the thin tubes, the heat dissipation and heat absorption area per unit volume can be increased by reducing the cross-sectional area of each thin tube and increasing the total number of them. The performance of can be improved.
特に、各細管の入口にて交差する複数の長尺材により格
子状に形成された乱流発生装置は製作が容易であり、製
作に要する時間および費用も少くてすむとともに、この
乱流発生装置を細管の入口の直前に設け、細管内に設置
しないので、乱流発生装置の取付も容易に行える。この
ため、乱流発生装置の既存の細管に取付けることも可能
である。In particular, a turbulent flow generator formed in a lattice shape by a plurality of long materials intersecting at the entrance of each thin tube is easy to manufacture, and the time and cost required for the manufacture are small, and the turbulent flow generator is used. The turbulent flow generator can be easily attached because the valve is provided immediately before the inlet of the thin tube and is not installed in the thin tube. For this reason, it is possible to attach it to the existing thin tube of the turbulence generator.
請求項２の考案によれば、細管の内壁近くに乱流発生部
を設けたから、この乱流発生部により細管内の境界層を
乱流化でき、より効果的に乱流熱伝達を行なうことがで
きる。According to the invention of claim 2, since the turbulent flow generation portion is provided near the inner wall of the thin tube, the boundary layer in the thin tube can be made turbulent by the turbulent flow generation portion, and the turbulent heat transfer can be performed more effectively. You can
第１図は本考案の熱交換器の一実施例を示す断面図、第
２図は第１図のII−II線断面図、第３図はその乱流発生
装置の拡大平面図、第４図は第３図のIV−IV線断面図、
第５図は第３図のＶ−Ｖ線断面図、第６図は本考案に係
る乱流発生装置の変形例を示す平面図、第７図はさらに
別の変形例を示す平面図、第８図（Ａ）は従来の熱交換
器の一例を示す平面図、第８図（Ｂ）は第８図（Ａ）の
B8−B8線断面図、第８図（ｃ）は第８図（Ａ）のC8−C8
線断面図、第９図（Ａ）は従来の熱交換器の他の例を示
す断面図、第９図（Ｂ）は第９図（Ａ）のB9−B9線断面
図、第９図（Ｃ）は第９図（Ａ）のC9−C9線断面図であ
る。 ３……細管、４……フィン、５……乱流発生装置、６…
…細管の入口、８……熱伝達流体、91,92……乱流発生
装置、91a,92a……乱流発生部。FIG. 1 is a sectional view showing an embodiment of the heat exchanger of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is an enlarged plan view of the turbulent flow generator. The figure is a sectional view taken along the line IV-IV in FIG.
5 is a sectional view taken along the line VV of FIG. 3, FIG. 6 is a plan view showing a modification of the turbulent flow generating device according to the present invention, and FIG. 7 is a plan view showing yet another modification. 8 (A) is a plan view showing an example of a conventional heat exchanger, and FIG. 8 (B) is a plan view of FIG. 8 (A).
B 8 -B 8 cross-sectional view taken along line, Figure 8 (c) is C 8 -C 8 of Figure 8 (A)
9A is a sectional view showing another example of the conventional heat exchanger, and FIG. 9B is a sectional view taken along line B 9 -B 9 in FIG. 9A. FIG. 9C is a sectional view taken along line C 9 -C 9 of FIG. 3 ... narrow tube, 4 ... fin, 5 ... turbulence generator, 6 ...
... narrow tube inlet, 8 ... heat transfer fluid, 91,92 ... turbulence generator, 91a, 92a ... turbulence generator.
Claims (2)
これらの各細管に設けられたフィンとを有する熱交換器
において、 前記各細管の入口の直前に、各細管の入口にて交差する
複数の長尺材により格子状に形成された乱流発生装置が
設けられたことを特徴とする熱交換器。1. A plurality of capillaries through which a fluid for heat transfer is passed,
In a heat exchanger having fins provided in each of these thin tubes, a turbulent flow generating device formed in a lattice shape by a plurality of long members intersecting at the inlet of each thin tube immediately before the inlet of each thin tube. A heat exchanger characterized by being provided with.
これらの各細管に設けられたフィンとを有する熱交換器
において、 前記各細管の入口の直前に乱流発生装置が設けられ、こ
の乱流発生装置として、細管の断面形状に近似する形状
の乱流発生部が、細管の内壁に対応する入口部分に形成
されたことを特徴とする熱交換器。2. A plurality of capillaries for passing a fluid for heat transfer,
In a heat exchanger having fins provided in each of these thin tubes, a turbulent flow generator is provided immediately before the inlet of each thin tube, and as this turbulent flow generator, a turbulent flow having a shape close to the cross-sectional shape of the thin tube is provided. A heat exchanger characterized in that the flow generating portion is formed at an inlet portion corresponding to the inner wall of the thin tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989035446U JPH0717968Y2 (en) | 1989-03-28 | 1989-03-28 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989035446U JPH0717968Y2 (en) | 1989-03-28 | 1989-03-28 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02127986U JPH02127986U (en) | 1990-10-22 |
| JPH0717968Y2 true JPH0717968Y2 (en) | 1995-04-26 |
Family
ID=31540816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989035446U Expired - Lifetime JPH0717968Y2 (en) | 1989-03-28 | 1989-03-28 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0717968Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5531225A (en) * | 1978-08-24 | 1980-03-05 | Toshiba Corp | Heat exchanger |
| JPS5758097A (en) * | 1980-09-22 | 1982-04-07 | Haruji Kurogo | Method and apparatus for improving heat exchanging efficiency of water pipe type heat exchanger |
-
1989
- 1989-03-28 JP JP1989035446U patent/JPH0717968Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02127986U (en) | 1990-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |