JPH0481104B2 - - Google Patents
Info
- Publication number
- JPH0481104B2 JPH0481104B2 JP59016711A JP1671184A JPH0481104B2 JP H0481104 B2 JPH0481104 B2 JP H0481104B2 JP 59016711 A JP59016711 A JP 59016711A JP 1671184 A JP1671184 A JP 1671184A JP H0481104 B2 JPH0481104 B2 JP H0481104B2
- Authority
- JP
- Japan
- Prior art keywords
- fins
- heat exchanger
- needle
- exchanger tube
- air
- 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
Links
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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
- F28F1/124—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 being formed of pins
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
【発明の詳細な説明】
本発明は、空調用熱交換器、空冷用熱交換器、
空気予熱器、空気（ガス）加熱冷却器等のフイン
付伝熱管の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an air conditioning heat exchanger, an air cooling heat exchanger,
This article relates to improvements in heat exchanger tubes with fins for air preheaters, air (gas) heating coolers, etc.
空気熱交換器の分野においては、空気側の伝熱
面に、直径が１mm以下の針金状のフイン（以下針
状フインと呼ぶ）を用いたものがある。この場
合、伝熱管に偏平形伝熱管を用いた場合を例とし
て、その概要を、第１図乃至第３図により説明す
る。 In the field of air heat exchangers, some use wire-like fins (hereinafter referred to as needle-like fins) with a diameter of 1 mm or less on the air-side heat transfer surface. In this case, an outline of the case where a flat heat exchanger tube is used as the heat exchanger tube will be explained with reference to FIGS. 1 to 3.
第１図は、従来の針金フイン付伝熱管の構造を
示す斜視図で、複数段（本例では３段）の偏平形
伝熱管１の相隣るものの間には、多数の針状フイ
ン２が、第２図に示すように一定の間隔を距てて
配置され、空気３の流れ方向（矢印方向）に平行
な列と、これと直角な方向の列を形成している。
そして、伝熱管１の内部には、液体または気体
（ガス）の加熱源または冷熱源が流され、その外
部を矢印方向に流れる空気３が、該伝熱管１及び
針状フイン２を介して加熱または冷却されて、熱
交換が行なわれるようになつている。 FIG. 1 is a perspective view showing the structure of a conventional heat exchanger tube with wire fins, in which a large number of needle-like fins 2 are arranged between adjacent flat heat exchanger tubes 1 in multiple stages (three stages in this example). As shown in FIG. 2, they are arranged at regular intervals, forming a row parallel to the flow direction of the air 3 (arrow direction) and a row perpendicular thereto.
A liquid or gas heating source or cold source is flowed inside the heat exchanger tube 1, and air 3 flowing outside in the direction of the arrow is heated via the heat exchanger tube 1 and the needle fins 2. Or it is cooled and heat exchange takes place.
この熱交換時に、空気３の流れは、第３図に示
す如く、針状フイン２の熱伝達に際して、そのま
わりに温度境界層４が形成されるが、該温度境界
層４は、上流側の針状フイン２のまわりのものよ
りも、後流側の針状フイン２-1，２-2の方が厚く
発達するため、後流側の針金フイン２-1，２-2の
方が熱伝達特性が劣つてきて、伝熱性能が低下す
るという欠点が、上記従来のフイン付伝熱管には
あつた。 During this heat exchange, as shown in FIG. 3, the flow of air 3 forms a temperature boundary layer 4 around the needle fins 2 as shown in FIG. Since the needle fins 2 -1 and 2 -2 on the downstream side develop thicker than those around the needle fin 2, the wire fins 2 -1 and 2 -2 on the downstream side receive more heat. The above-mentioned conventional finned heat exchanger tube has the drawback that the transfer characteristics are deteriorated and the heat transfer performance is lowered.
本発明は、上記従来のフイン付伝熱管の欠点を
解消し、伝熱性能の優れたフイン付伝熱管を提供
することを目的として提案されたもので、流体の
流れ方向に沿つて断続的に一定の間隔を距てて配
置された多数の針状フインまたは平板状フインを
有するフイン付伝熱管において、各フインの太さ
を伝熱管外の流体の流れに沿つて、上流側から後
流に段階的に太く設定してなることを特徴とする
フイン付伝熱管に係るものである。 The present invention was proposed for the purpose of eliminating the drawbacks of the conventional finned heat exchanger tubes and providing a finned heat exchanger tube with excellent heat transfer performance. In a finned heat exchanger tube that has a large number of needle-like fins or flat plate-like fins arranged at regular intervals, the thickness of each fin is adjusted from the upstream side to the downstream side along the flow of fluid outside the heat exchanger tube. The present invention relates to a heat exchanger tube with fins, which is characterized by being made thicker in stages.
以下、第４図に示す実施例により本発明につき
具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to an embodiment shown in FIG.
同図において、１は上記偏平伝熱管とほぼ同一
構造の偏平伝熱管（同一符号が付されている。）
で、該伝熱管１は上下方向に複数段設けられてお
り、上下の相隣る偏平伝熱管の間に、多数の針状
フインが配設されていることは、上記従来のもの
とほぼ同様であるが、本発明はそれら針状フイン
太さの配列状態に特別な配慮を講じた点で、上記
従来のものと構成を異にしている。すなわち本発
明では第４図に示す如く、空気３の流れ方向（矢
印方向）に沿う列の針状フイン４−1，４−2，４
−3，４−ｉ，…４−ｎの直径D1，D2，D3，Di…
Dnが、D1＜D2＜D3＜Di…＜Dnの関係にあるよ
うに、段階的に変化させて上流側から後流側に向
つて太く設定した構成を特徴とするものである。
なお、空気３の流れ方向に直角な方向における斜
状フイン４間の間隔は、従来のものと同様に等し
く設定される。 In the figure, 1 is a flat heat exchanger tube having almost the same structure as the above-mentioned flat heat exchanger tube (the same reference numerals are attached).
The heat exchanger tubes 1 are provided in multiple stages in the vertical direction, and a large number of needle-like fins are arranged between the upper and lower adjacent flat heat exchanger tubes, which is almost the same as the conventional one. However, the present invention differs from the above-mentioned conventional structure in that special consideration has been taken to the arrangement of the needle-like fin thicknesses. That is, in the present invention, as shown in FIG. 4, needle fins 4-1 , 4-2 , 4 are arranged in a row along the flow direction (arrow direction) of the air 3.
-3,4 -i,...4-n diameter D1 , D2 , D3 , Di...
It is characterized by a configuration in which Dn is changed stepwise and set thicker from the upstream side to the downstream side so that Dn is in the relationship D 1 <D 2 <D 3 <Di...<Dn.
Note that the spacing between the oblique fins 4 in the direction perpendicular to the flow direction of the air 3 is set to be equal as in the conventional case.
本発明では、上記の如く針金フイン４の直径Ｄ
が空気の流れの上流側から後流側に向つて段階的
に太くなるように設定されているため、各々の針
状フイン４-1，４-2，４-3等のまわりには、同じ
程度の温度境界層が発達し、後流側に位置する針
状フインの熱伝達特性が低下することなく、その
伝熱性能が向上する。 In the present invention, as described above, the diameter D of the wire fin 4 is
is set to become thicker in stages from the upstream side to the downstream side of the air flow, so around each needle-like fin 4-1 , 4-2 , 4-3, etc. A moderate temperature boundary layer develops, and the heat transfer performance of the needle-like fins located on the downstream side is improved without deterioration of the heat transfer characteristics.
従つて、本発明によれば、上記従来のフイン付
伝熱管の欠点を解消し、伝熱性能の優れたフイン
付伝熱管を実現できるという実用的効果を挙げる
ことができる。つぎに、第５図に示す本発明の他
の実施例は、数本の針状フイン５-1，５-2，５−
ｉ毎に、フイン直径d1，d2，di等を、空気３の流
れの方向に段階的に変化させ、d1＜d2＜diとなる
ように構成した点が異なるが、上記実施例例と同
様な作用、効果を奏するものである。 Therefore, according to the present invention, the drawbacks of the conventional finned heat exchanger tubes can be solved and a finned heat exchanger tube with excellent heat transfer performance can be realized, which is a practical effect. Next, another embodiment of the present invention shown in FIG .
The difference is that the fin diameters d 1 , d 2 , di, etc. are changed stepwise in the direction of the flow of the air 3 for each i, so that d 1 < d 2 < di. It has the same action and effect as the example.
なお、上記各実施例では、針状フイン４，５を
用いた例を示したが、針状フイン４，５に代えて
板状フインを用いてもよい。また、上記各実施例
に於いて、各フインの間隔を上流側から下流側に
段階的に設定することもできる。 In each of the above embodiments, the needle-like fins 4 and 5 are used, but plate-like fins may be used instead of the needle-like fins 4 and 5. Furthermore, in each of the above embodiments, the intervals between the fins can be set stepwise from the upstream side to the downstream side.
第１図は、従来のフイン付伝熱管の斜視図、第
２図は第１図の−線に沿う断面図、第３図は
従来のフイン付伝熱管のフインまわりの温度境界
線の形成態様説明図、第４図は本発明の一実施例
の第２図に相当する断面図、第５図は本発明の他
の実施例の第２図に相当する断面図である。
１：偏平伝熱管、２，２-1，２-2：針状フイ
ン、３：空気、４，４−1，４−2，４−3，４−
ｉ，４−ｎ：針状フイン、５，５-1，５-2，５−
ｉ：針状フイン。
Fig. 1 is a perspective view of a conventional finned heat exchanger tube, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a form of formation of temperature boundary lines around the fins of a conventional finned heat exchanger tube. The explanatory diagram, FIG. 4, is a cross-sectional view corresponding to FIG. 2 of one embodiment of the present invention, and FIG. 5 is a cross-sectional view corresponding to FIG. 2 of another embodiment of the present invention. 1: Flat heat exchanger tube, 2, 2-1 , 2-2 : Acicular fin, 3: Air, 4, 4- 1 , 4- 2 , 4- 3 , 4-
i, 4-n: needle-like fin, 5, 5-1 , 5-2 , 5-
i: Needle-like fins.
Claims (1)
を距てて配置された多数の針状フインまたは平板
状フインを有するフイン付伝熱管において、各フ
インの太さを伝熱管外の流体の流れに沿つて、上
流側から後流に段階的に太く設定してなることを
特徴とするフイン付伝熱管。1. In a finned heat transfer tube having a large number of needle-like fins or flat plate-like fins arranged intermittently at regular intervals along the flow direction of the fluid, the thickness of each fin is determined based on the thickness of the fluid outside the heat transfer tube. A heat exchanger tube with fins that is made thicker in stages from the upstream side to the downstream side along the flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1671184A JPS60162189A (en) | 1984-02-01 | 1984-02-01 | Heat transfer tube with fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1671184A JPS60162189A (en) | 1984-02-01 | 1984-02-01 | Heat transfer tube with fin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60162189A JPS60162189A (en) | 1985-08-23 |
| JPH0481104B2 true JPH0481104B2 (en) | 1992-12-22 |
Family
ID=11923847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1671184A Granted JPS60162189A (en) | 1984-02-01 | 1984-02-01 | Heat transfer tube with fin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60162189A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000161880A (en) * | 1998-11-26 | 2000-06-16 | Toshiba Corp | Heat pipe cooler |
| DE10025486A1 (en) * | 2000-05-23 | 2001-11-29 | Behr Gmbh & Co | Heat transfer block, e.g. for vehicle air conditioner, has several heat-conducting rods spaced out between outer walls and extending through all walls to link flow chambers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4257031A (en) * | 1979-07-18 | 1981-03-17 | The Bendix Corporation | Digital remote control system |
-
1984
- 1984-02-01 JP JP1671184A patent/JPS60162189A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60162189A (en) | 1985-08-23 |
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