JPH0692874B2 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH0692874B2 JPH0692874B2 JP25147585A JP25147585A JPH0692874B2 JP H0692874 B2 JPH0692874 B2 JP H0692874B2 JP 25147585 A JP25147585 A JP 25147585A JP 25147585 A JP25147585 A JP 25147585A JP H0692874 B2 JPH0692874 B2 JP H0692874B2
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- heat exchanger
- flat tubes
- fins
- flat
- 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 - Fee Related
Links
- 238000011144 upstream manufacturing Methods 0.000 description 10
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
- F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
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器等に用いられる熱交換器に関
するものである。TECHNICAL FIELD The present invention relates to a heat exchanger used for an air conditioner, a refrigerator, and the like.
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形状フィンを
備えた熱交換器がすでに実用化されている。2. Description of the Related Art In recent years, the performance of heat exchangers has been remarkably improved, and heat exchangers having corrugated fins, which have a large air-side heat transfer area, have already been put into practical use.
以下図面を参照しながら、上述した従来の熱交換器につ
いて説明を行う。The above-mentioned conventional heat exchanger will be described below with reference to the drawings.
第２図は従来の熱交換器の形状を示すものである。第２
図において、１は蛇行状に屈曲した偏平管で、鉛直方向
に直管部を多数平行に備えている。２は偏平管１の向い
合う直管部相互間にほぼ水平となるよう設けられたルー
バーフィンで、波形状に一定間隔で重積されている。３
は偏平管１の端部に設けられたヘッダーである。FIG. 2 shows the shape of a conventional heat exchanger. Second
In the figure, reference numeral 1 denotes a flat tube bent in a meandering shape, which is provided with a large number of straight tube portions in parallel in the vertical direction. Reference numeral 2 denotes a louver fin provided so as to be substantially horizontal between the facing straight pipe portions of the flat pipe 1, and the louver fins are stacked in a wave shape at regular intervals. Three
Is a header provided at the end of the flat tube 1.
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 described above will be described below.
ルーバーフィン２のフィン間に流れる気流Ａと、ヘッダ
ー３で分流されて偏平管１の管内を流れる熱媒体の間
で、ルーバーフィン２及び偏平管１を介して熱交換が行
なわれる。Heat exchange is performed via the louver fins 2 and the flat tubes 1 between the airflow A flowing between the fins of the louver fins 2 and the heat medium that is split in the header 3 and flows in the flat tubes 1.
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、ルーバーフィン２
の表面に生じる気流Ａの温度境界層は十分に分断されず
に下流へ行くに従って厚くなり、特に気流Ａ方向に長い
熱交換器の場合にルーバーフィン２と気流Ａの間の平均
的な熱伝達率が極端に低下し、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, in the above-mentioned configuration, the louver fin 2
The temperature boundary layer of the air flow A generated on the surface of the air flow becomes thicker as it goes downstream without being sufficiently divided, and particularly in the case of a heat exchanger long in the air flow A direction, the average heat transfer between the louver fins 2 and the air flow A. There was a problem that the rate was extremely reduced and the heat exchange capacity was reduced.
本発明は上記問題点に鑑み、気流方向に長い熱交換器に
おいても大きい熱交換能力の得られる熱交換器を提供す
るものである。In view of the above problems, the present invention provides a heat exchanger that has a large heat exchange capacity even in a heat exchanger that is long in the air flow direction.
問題点を解決するための手段 上記問題点を解決するために本発明の熱交換器は、偏平
管及びフィンを気流方向で数列に分断し、かつ気流方向
で隣り合う列の偏平管を気流方向から見て互いに交差す
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 divides the flat tubes and the fins into several rows in the air flow direction, and divides the flat tubes in adjacent rows in the air flow direction into the air flow direction. It has a structure in which they intersect each other when viewed from above.
作用 本発明は上記した構成によって、フィン表面及び偏平管
表面に生じる気流の温度境界層が気流方向の各列で上流
側と異なった方向に発達するために、前記温度境界層は
列間で完全に分断されて各列前縁部から新たに発生する
こととなり、下流側の列でも上流側と同等の熱伝達率を
得ることができることとなる。Effect According to the present invention, the temperature boundary layer of the air flow generated on the fin surface and the flat tube surface develops in a direction different from the upstream side in each row of the air flow direction due to the above-described configuration, and thus the temperature boundary layer is completely formed between the rows. It is divided into two parts and newly generated from the front edge part of each row, so that the heat transfer coefficient equivalent to that of the upstream side can be obtained in the row on the downstream side.
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。Embodiment A heat exchanger according to an embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例における熱交換器の斜視図を
示すものである。第１図において、４は蛇行状に屈曲し
た偏平管で、気流Ｂ方向に対して上流側4aと下流側4bに
分断されており、その直管部を上流側4aは鉛直に、下流
側4bは水平となるよう気流Ｂ方向から見て互いに交差し
ている。５は偏平管４の向い合う直管部相互間に設けら
れたルーバーフィンで、波形状に一定間隔で重積される
と共に、偏平管４と同様気流Ｂ方向に対して上流側5aと
下流側5bに分断されてある。６はヘッダーで、上流側偏
平管4aと下流側偏平管4bの流路を連結するよう設けられ
てある。FIG. 1 is a perspective view of a heat exchanger according to an embodiment of the present invention. In FIG. 1, reference numeral 4 denotes a flat tube bent in a meandering shape, which is divided into an upstream side 4a and a downstream side 4b in the air flow B direction, and the straight tube portion is connected to the upstream side 4a vertically and the downstream side 4b. Intersect with each other when viewed from the direction of the air flow B so that they are horizontal. Reference numeral 5 denotes louver fins provided between the facing straight pipe portions of the flat pipe 4, which are piled up in a wave shape at regular intervals, and are the same as the flat pipe 4 with respect to the air flow B direction in the upstream side 5a and the downstream side. Divided into 5b. Reference numeral 6 denotes a header, which is provided so as to connect the flow paths of the upstream flat tube 4a and the downstream flat tube 4b.
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 described above will be described below.
ルーバーフィン５のフィン間を流れる気流Ｂとベッダー
６で分流されて偏平管４の管内を流れる熱媒体の間で、
ルーバーフィン５及び偏平管４を介して熱交換が行なわ
れる。その際、ルーバーフィン５及び偏平管４の表面に
気流Ｂの温度境界層が発達するわけであるが、上流側の
列と下流側の列では異なった方向に発達するため、上流
側のルーバーフィン5a及び偏平管4aの表面に発達した温
度境界層は列間で完全に分断され、下流側のルーバーフ
ィン5b及び偏平管4bの前縁部から新たに温度境界層は発
生することとなり、下流側の列でも上流側と同等の大き
い熱伝達率を得ることができる。Between the air flow B flowing between the fins of the louver fins 5 and the heat medium which is split by the bedder 6 and flows in the flat tubes 4,
Heat exchange is performed via the louver fins 5 and the flat tubes 4. At that time, the temperature boundary layer of the air flow B develops on the surfaces of the louver fins 5 and the flat tubes 4, but the upstream row and the downstream row develop in different directions. The temperature boundary layer developed on the surfaces of 5a and the flat tubes 4a is completely divided between the rows, and a new temperature boundary layer is generated from the front edge portions of the louver fins 5b and the flat tubes 4b on the downstream side, and the downstream side. The same heat transfer coefficient as that of the upstream side can be obtained in the row.
以上のように本実施例によれば、偏平管４及びルーバー
フィン５を気流Ｂ方向で２列に分断し、かつ気流Ｂ方向
から見て上流側偏平管4aと下流側偏平管4bとを交差させ
ることにより、下流側でも上流側と同等の大きい熱伝達
率を得て熱交換能力を高めることができる。As described above, according to this embodiment, the flat tubes 4 and the louver fins 5 are divided into two rows in the air flow B direction, and the upstream flat tubes 4a and the downstream flat tubes 4b intersect each other when viewed from the air flow B direction. By doing so, it is possible to obtain the same large heat transfer coefficient on the downstream side as on the upstream side and enhance the heat exchange capacity.
尚、本実施例では列数を２列としたが、分断する列数は
３列以上としてもよい。Although the number of columns is two in this embodiment, the number of columns to be divided may be three or more.
発明の効果 以上のように本発明は、偏平管及びフィンを気流方向で
数列に分断し、かつ気流方向で隣り合う列の偏平管を気
流方向から見て互いに交差するように設けることによ
り、気流方向に長い熱交換器においても、下流へ行くに
従って熱伝達率を低下させることなく、平均的に大きい
熱交換能力を得ることができる。As described above, the present invention divides the flat tubes and the fins into several rows in the air flow direction, and provides the flat tubes in the rows adjacent to each other in the air flow direction so as to intersect each other when viewed from the air flow direction. Even in a heat exchanger long in the direction, a large heat exchange capacity can be obtained on average without decreasing the heat transfer coefficient as it goes downstream.
第１図は本発明の一実施例における熱交換器の斜視図、
第２図は従来の熱交換器の斜視図である。 ４……偏平管、５……ルーバーフィン、６……ヘッダ
ー。FIG. 1 is a perspective view of a heat exchanger in one embodiment of the present invention,
FIG. 2 is a perspective view of a conventional heat exchanger. 4 ... Flat tube, 5 ... Louver fin, 6 ... Header.
Claims (1)
管の間に波形状に重積したフィンとを備え、前記偏平管
及びフィンは気流方向で数列に分断されると共に、気流
方向で隣り合う列の偏平管が気流方向から見て互いに交
差することを特徴とする熱交換器。1. A plurality of flat tubes arranged in parallel and fins stacked in a corrugated shape between adjacent flat tubes, wherein the flat tubes and the fins are divided into a plurality of rows in the air flow direction, and at the same time, in the air flow direction. In the heat exchanger, the flat tubes in adjacent rows intersect with each other when viewed from the air flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25147585A JPH0692874B2 (en) | 1985-11-08 | 1985-11-08 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25147585A JPH0692874B2 (en) | 1985-11-08 | 1985-11-08 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62112989A JPS62112989A (en) | 1987-05-23 |
| JPH0692874B2 true JPH0692874B2 (en) | 1994-11-16 |
Family
ID=17223365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25147585A Expired - Fee Related JPH0692874B2 (en) | 1985-11-08 | 1985-11-08 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0692874B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0645154Y2 (en) * | 1989-02-28 | 1994-11-16 | 昭和アルミニウム株式会社 | Heat exchanger |
-
1985
- 1985-11-08 JP JP25147585A patent/JPH0692874B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62112989A (en) | 1987-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |