JPS62172192A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPS62172192A JPS62172192A JP1516686A JP1516686A JPS62172192A JP S62172192 A JPS62172192 A JP S62172192A JP 1516686 A JP1516686 A JP 1516686A JP 1516686 A JP1516686 A JP 1516686A JP S62172192 A JPS62172192 A JP S62172192A
- Authority
- JP
- Japan
- Prior art keywords
- airflow
- fin
- heat exchanger
- slit piece
- fins
- 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
- 238000000034 method Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005057 refrigeration Methods 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
- F28F1/126—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 consisting of zig-zag shaped fins
- F28F1/128—Fins with openings, e.g. louvered fins
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
本発明は空調機器や冷凍機器等に用いられる熱交換器に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchanger used in air conditioning equipment, refrigeration equipment, etc.
従来の技術
近年、熱交換器の性能向上は目ざましいものがあり、空
気側伝熱面積が大きいことを特徴とする波型フィンを備
えだ熱交換器が自動車用を中心としてすでに実用化され
ている。Conventional technology In recent years, there has been a remarkable improvement in the performance of heat exchangers, and heat exchangers equipped with wave-shaped fins that have a large heat transfer area on the air side have already been put into practical use mainly for automobiles. .
以下図面を参照しながら、上述した従来の熱交換器につ
いて説明を行なう。The conventional heat exchanger mentioned above will be explained below with reference to the drawings.
第５図は従来の熱交換器の概略形状を示し、第６図はそ
のフィン形状を示すものである。第５図〜第６図におい
て、１は蛇行状に屈曲した偏平管で直管部１′をほぼ平
行に備えている。２は偏平管１の向かい合う直管部１′
相互間に設けられたフィンで、波型状に一定間隔で偏平
管１に固定されている。３はフィン２０表面に設けられ
たルーバ片で、前縁部３ａが気流Ａと対向し、かつルー
バ面３ｂが気流Ａと傾斜を持って構成されている。FIG. 5 shows a schematic shape of a conventional heat exchanger, and FIG. 6 shows its fin shape. In FIGS. 5 and 6, reference numeral 1 is a meanderingly bent flat tube having straight tube portions 1' substantially parallel to each other. 2 is a straight pipe part 1' facing the flat pipe 1;
The fins are provided between each other and are fixed to the flat tube 1 in a wave shape at regular intervals. Reference numeral 3 denotes a louver piece provided on the surface of the fin 20, with a front edge 3a facing the airflow A and a louver surface 3b inclined with respect to the airflow A.
以上のように構成された熱交換器について、以下その動
作について説明する。The operation of the heat exchanger configured as above will be described below.
フィン２のフィン間を流れる気流Ａと偏平管１の管内を
流れる熱媒体の間で、フィン２及び偏平管１を介して熱
交換が行なわれる。その際、フィン２の表面に設けられ
たルーバ片３により、フィン２の表面に生じる気流Ａの
温度境界層の発達が分断されて温度境界層の平均厚さが
薄くなる効果と、フィン２の両面を流れる気流Ａが前記
ルーバ片により混合されて乱される効果により、気流Ａ
とフィン２の間で大きい熱伝達率を得ている。Heat exchange is performed between the airflow A flowing between the fins of the fins 2 and the heat medium flowing inside the flat tube 1 via the fins 2 and the flat tube 1. At this time, the louver piece 3 provided on the surface of the fin 2 interrupts the development of the temperature boundary layer of the airflow A generated on the surface of the fin 2, reducing the average thickness of the temperature boundary layer, and Due to the effect that the airflow A flowing on both sides is mixed and disturbed by the louver piece, the airflow A
A large heat transfer coefficient is obtained between the fins 2 and fins 2.
発明が解決しようとする問題点
しかしながら上記のような構成では、ルーバ片３による
通風抵抗の増大が著しく大きいことと、フィン２０表面
に生じる気流Ａの温度境界層が完全に分断されずに下流
へ行くに従って厚くなり、気流Ａとフィン２の間の熱伝
達率が下流へ行く程低下することとなり、特に気流Ａ方
向に長い熱交換器の場合に極端に熱交換能力が低下する
という問題点を有していた。Problems to be Solved by the Invention However, with the above configuration, the increase in ventilation resistance due to the louver pieces 3 is significantly large, and the temperature boundary layer of the airflow A generated on the surface of the fin 20 is not completely separated and flows downstream. As the thickness increases, the heat transfer coefficient between the airflow A and the fins 2 decreases as it goes downstream, which causes the problem that the heat exchange ability is extremely reduced especially in the case of a heat exchanger that is long in the direction of the airflow A. had.
本発明は上記問題点に鑑み、気流方向に長い熱交換器に
おいてもフィンと気流の間の熱伝達率が低下せず、熱交
換能力の大きい熱交換器を提供するものである。In view of the above-mentioned problems, the present invention provides a heat exchanger that has a large heat exchange capacity without reducing the heat transfer coefficient between the fins and the airflow even in a heat exchanger that is long in the direction of the airflow.
問題点を解決するだめの手段
上記問題点を解決するために本発明の熱交換器は、フィ
ン表面に前縁部が気流と対向するスリット片を設け、か
つスリット片の切起こし面が前記フィンに対して平行な
面と傾斜した面とから形成されているという構成を備え
たものである。Means for Solving the Problems In order to solve the above problems, the heat exchanger of the present invention has a slit piece on the fin surface whose front edge faces the airflow, and a cut and raised surface of the slit piece facing the fin. It has a configuration in which it is formed of a plane parallel to the plane and a plane inclined to the plane.
作 用
本発明は上記した構成によってフィン表面に生じる気流
の温度境界層の発達がスリット片によって分断されて温
度境界層の平均的な厚さが薄くなると共に、スリット片
を形成する切起こし面のフィンに対して傾斜した面によ
シフイン間を流れる気流がフィン表面に対して垂直方向
に混合されるることとなる。Effects of the present invention With the above-described configuration, the development of the temperature boundary layer of the airflow generated on the fin surface is divided by the slit pieces, so that the average thickness of the temperature boundary layer becomes thinner, and the cut and raised surfaces forming the slit pieces are The airflow flowing between the fins is mixed in a direction perpendicular to the fin surface due to the surface inclined with respect to the fin.
実施例
以下本発明の一実施例の熱交換器について、図面を参照
しながら説明する。EXAMPLE Hereinafter, a heat exchanger according to an example of the present invention will be described with reference to the drawings.
第１図〜第４図は本発明の一実施例における熱交換器を
示すものである。第１図〜第４図において、１は偏平管
で従来の構成と同じものである。1 to 4 show a heat exchanger in one embodiment of the present invention. In FIGS. 1 to 4, numeral 1 denotes a flat tube having the same structure as the conventional one.
４は偏平管１の向かい合う直管部１′相互間に設けられ
たフィンで、波型状に一定間隔で偏平管１に固定されて
いる。５はフィン４の表面に設けられたスリット片で、
前縁部６ａが気流Ｂと対向する方向に設けである。また
スリット片５は、脚部５ｂと切起こし面５Ｃとからなり
、更に切起こし面５Ｃはフィン６に対して平行面５ｄと
傾斜面５ｄ’とから形成されている。また、前記傾斜面
ｓ ｄ’は気流Ｂ方向で千鳥配列となるよう切起こし面
６Ｃに形成されている。Fins 4 are provided between the opposing straight pipe portions 1' of the flat tube 1, and are fixed to the flat tube 1 at regular intervals in a wave shape. 5 is a slit piece provided on the surface of the fin 4;
The front edge 6a is provided in a direction facing the airflow B. The slit piece 5 is made up of a leg portion 5b and a cut and raised surface 5C, and the cut and raised surface 5C is formed of a parallel surface 5d and an inclined surface 5d' with respect to the fin 6. Further, the inclined surface s d' is formed on the cut and raised surface 6C so as to be arranged in a staggered manner in the direction of the airflow B.
以上のように構成された熱交換器について、以下その動
作について説明する。The operation of the heat exchanger configured as above will be described below.
フィン４のフィン間を流れる気流Ｂと偏平管１の管内を
流れる熱媒体の間で、フィン４及び偏平管１を介して熱
交換が行なわれる。その際、フィン４０表面に生じる気
流Ｂの温度境界層の発達がスリット片６により分断され
て温度境界層の平均厚さが薄くなる。寸だ、スリット片
５の切起こし面５ｃの傾斜面６ｃ“によりフィン４の両
面を流れる気流Ｂがフィン４に対して垂直方向に混合さ
れると共に、千鳥配列された傾斜面５ｄｌにより気流Ｂ
はフィン４表面に沿う方向にも大きく乱される。Heat exchange is performed between the airflow B flowing between the fins of the fins 4 and the heat medium flowing inside the flat tube 1 via the fins 4 and the flat tube 1. At this time, the development of the temperature boundary layer of the airflow B generated on the surface of the fin 40 is divided by the slit piece 6, and the average thickness of the temperature boundary layer becomes thinner. The airflow B flowing on both sides of the fins 4 is mixed in the direction perpendicular to the fins 4 by the sloped surface 6c'' of the cut and raised surface 5c of the slit piece 5, and the airflow B is mixed by the staggered sloped surfaces 5dl.
is also greatly disturbed in the direction along the surface of the fin 4.
また、切起こし而５Ｃは平行面５ ｃ／も備えているだ
め、大きく通風抵抗を増大させることもない。Moreover, since the cut and raised part 5C also has a parallel surface 5c/, the ventilation resistance does not increase significantly.
以上のように本実施例によれば、フィン４の表面にスリ
ット片５を設け、かつスリット片６を形成する切起こし
面５Ｃに平行面５ ｃ’と傾斜面５０″を気流Ｂ方向で
千鳥配列に設けることにより、通風抵抗を大きく増大さ
せることなく、気流Ｂの温度境界層厚さを平均的に薄く
することと、気流Ｂの流れを大きく乱して、気流Ｂとフ
ィン４の間で極めて大きい熱伝達率を得、しかも気流Ｂ
はフィン４表面に沿う方向にも大きく乱されるだめ、気
流Ｂ方向に長い熱交換器であっても下流へ行くに従って
熱伝達率が低下するということはなく、大きい熱交換能
力を得ることができるａ
発明の効果
以上のように本発明は、フィン表面に前縁部が気流と対
向するスリット片を設け、かつスリット片を形成する切
起こし面を前記フィンに対して平行な面と傾斜した面か
ら形成することにより、フィンと気流の間で大きい熱伝
達率を得、かつ気流方向に長い熱交換器でも下流側へ行
くに従って熱伝達率を低下させることなく、熱交換能力
の優れた熱交換器を得ることができる。As described above, according to this embodiment, the slit piece 5 is provided on the surface of the fin 4, and the cut and raised face 5C forming the slit piece 6 has a parallel surface 5c' and an inclined surface 50'' in a staggered manner in the direction of the airflow B. By providing the fins in an array, it is possible to reduce the thickness of the temperature boundary layer of the airflow B on average without greatly increasing the ventilation resistance, and to greatly disturb the flow of the airflow B, thereby increasing the temperature between the airflow B and the fins 4. Obtains extremely high heat transfer coefficient, and airflow B
is also greatly disturbed in the direction along the surface of the fins 4, so even if the heat exchanger is long in the direction of the airflow B, the heat transfer coefficient will not decrease as it goes downstream, and a large heat exchange capacity can be obtained. Possible a Effect of the Invention As described above, the present invention provides a slit piece whose front edge faces the airflow on the fin surface, and a cut and raised surface forming the slit piece that is inclined with respect to a plane parallel to the fin. By forming the fins into a flat surface, a large heat transfer coefficient can be obtained between the fins and the airflow, and even if the heat exchanger is long in the direction of the airflow, the heat transfer coefficient will not decrease as it goes downstream. You can get an exchanger.
第１図は本発明の一実施例における熱交換器のフィン形
状を示す要部斜視図、第２図は第１図の平面図、第３図
は第２図のＣ−Ｃ線の断面図、第４図は第２図のＤ−Ｄ
線の断面図、第５図は従来の熱交換器の形状を示す斜視
図、第６図は第５図のフィン形状を示す要部斜視図であ
る。
４・・・・・・フィン、５・・・・・・スリット片、５
ａ・・・・・・前縁部、６ｂ・・・・・・脚部、５Ｃ
・・・・・・切起こし面、５ｃ’・・・・・・平行面、
５ ｃ／／、・・・・・傾斜面。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ａ
Ｂ ／
第５図
凍６図Fig. 1 is a perspective view of a main part showing the fin shape of a heat exchanger in an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a cross-sectional view taken along line C-C of Fig. 2. , Figure 4 is D-D in Figure 2.
5 is a perspective view showing the shape of a conventional heat exchanger, and FIG. 6 is a perspective view of a main part showing the fin shape of FIG. 5. 4...Fin, 5...Slit piece, 5
a... Front edge, 6b... Leg, 5C
......Cut and raised surface, 5c'...Parallel surface,
5 c//,...slope surface. Name of agent: Patent attorney Toshio Nakao and 1 other persona B / Figure 5, Figure 6
Claims (1)
に重積したフィンとを備え、前記フィン表面に前縁部が
気流と対向するスリット片を設け、かつスリット片の切
起こし面を前記フィンに対して平行な面と傾斜した面と
から形成したことを特徴とする熱交換器。A flat tube bent in a serpentine shape and a fin stacked in a wave shape between the flat tubes, a slit piece having a front edge facing the airflow is provided on the surface of the fin, and a cut and raised surface of the slit piece is provided. A heat exchanger characterized in that the fins are formed of a surface parallel to the fins and a surface inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1516686A JPS62172192A (en) | 1986-01-27 | 1986-01-27 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1516686A JPS62172192A (en) | 1986-01-27 | 1986-01-27 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62172192A true JPS62172192A (en) | 1987-07-29 |
Family
ID=11881214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1516686A Pending JPS62172192A (en) | 1986-01-27 | 1986-01-27 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62172192A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2453234A (en) * | 2007-09-27 | 2009-04-01 | Toshiba Carrier Corp | Heat exchanger |
| FR2924491A1 (en) * | 2007-12-04 | 2009-06-05 | Valeo Systemes Thermiques | WIRELESS INTERCALIARY WITH PERSIANS FOR HEAT EXCHANGER |
| US20150000880A1 (en) * | 2008-08-06 | 2015-01-01 | Delphi Technologies, Inc. | Heat exchanger with varied louver angles |
| JP2017161186A (en) * | 2016-03-11 | 2017-09-14 | パナソニックＩｐマネジメント株式会社 | Fin tube heat exchanger |
| EP3255369A1 (en) * | 2016-06-08 | 2017-12-13 | Mahle International GmbH | Fin element for a heat transferer |
-
1986
- 1986-01-27 JP JP1516686A patent/JPS62172192A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2453234A (en) * | 2007-09-27 | 2009-04-01 | Toshiba Carrier Corp | Heat exchanger |
| GB2453234B (en) * | 2007-09-27 | 2010-07-14 | Toshiba Carrier Corp | Heat exchanger and air conditioner |
| FR2924491A1 (en) * | 2007-12-04 | 2009-06-05 | Valeo Systemes Thermiques | WIRELESS INTERCALIARY WITH PERSIANS FOR HEAT EXCHANGER |
| EP2068106A1 (en) * | 2007-12-04 | 2009-06-10 | Valeo Systèmes Thermiques | Corrugated fin with louvers for a heat exchanger |
| JP2009139085A (en) * | 2007-12-04 | 2009-06-25 | Valeo Systemes Thermiques | Louver type corrugated insert for heat exchanger |
| US20150000880A1 (en) * | 2008-08-06 | 2015-01-01 | Delphi Technologies, Inc. | Heat exchanger with varied louver angles |
| JP2017161186A (en) * | 2016-03-11 | 2017-09-14 | パナソニックＩｐマネジメント株式会社 | Fin tube heat exchanger |
| EP3255369A1 (en) * | 2016-06-08 | 2017-12-13 | Mahle International GmbH | Fin element for a heat transferer |
| CN107478085A (en) * | 2016-06-08 | 2017-12-15 | 马勒国际公司 | Fin element for heat exchanger |
| CN107478085B (en) * | 2016-06-08 | 2021-05-11 | 马勒国际公司 | Fin element for a heat exchanger |
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