JPS6226703Y2

JPS6226703Y2 -

Info

Publication number: JPS6226703Y2
Application number: JP1982146565U
Authority: JP
Priority date: 1982-09-27
Filing date: 1982-09-27
Publication date: 1987-07-08
Also published as: JPS5955280U

Description

【考案の詳細な説明】産業上の利用分野本考案は、空気調和装置等に使用されるフイン
チユーブ形熱交換器に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a finch tube heat exchanger used in air conditioners and the like.

従来例の構成とその問題点従来、空気調和装置等における熱交換器として
第１図に示すような形式のフインチユーブ形熱交
換器が使用されている。すなわち、多数のフイン
１ａを所定間隔ごとに平行に並べて平板フイン群
１を形成し、この平板フイン群１に直角に伝熱管
２を多段にわたつて直交することによりフインチ
ユーブ形熱交換器が構成されている。そして空気
は各平板フイン１ａの相互間を矢印方向に流れ
て、伝熱管２内の冷媒と熱交換を行う。Conventional Structure and Problems Conventionally, a finch tube heat exchanger as shown in FIG. 1 has been used as a heat exchanger in an air conditioner or the like. That is, a fin fin type heat exchanger is constructed by arranging a large number of fins 1a in parallel at predetermined intervals to form a flat plate fin group 1, and by orthogonally extending heat transfer tubes 2 in multiple stages to the flat plate fin group 1. ing. The air flows in the direction of the arrow between the flat fins 1a and exchanges heat with the refrigerant in the heat transfer tubes 2.

ところが、このような熱交換器の伝熱管２風下
側には、第２図に示すように、止水域３が存在す
るので、伝熱管２の風下側の平板フイン１ａ表面
の空気側局所伝達率は著しく低く、熱交換器とし
ての伝熱性能が悪いという欠点を有していた。 However, on the leeward side of the heat exchanger tubes 2 of such a heat exchanger, as shown in FIG. was extremely low, and had the disadvantage of poor heat transfer performance as a heat exchanger.

考案の構成本考案は、フイン群の各フインにおける伝熱管
群の風下側に発生する止水域部を切り起して開口
を設け、前記切り起しを折り曲げて止水域部外へ
位置させたもので、本来止水域にあつて熱伝達に
あまり寄与することのなかつたフインの一部分
が、流れている空気と接触して熱交換するように
なるので、フイン表面の熱伝達率が大幅に向上す
るものである。Structure of the invention In the present invention, the cut-off area that occurs on the leeward side of the heat transfer tube group in each fin of the fin group is cut and raised to form an opening, and the cut-and-raised part is bent and positioned outside the cut-off area. Then, a part of the fin that was originally a static water area and did not contribute much to heat transfer comes into contact with the flowing air and exchanges heat, greatly improving the heat transfer coefficient on the fin surface. It is something.

実施例の説明以下本考案を、その一実施例を示す第３図およ
び第４図を参考に説明する。ここで、本考案のフ
インチユーブ形熱交換器は基本的に従来のフイン
チユーブ形熱交換器と同様の構成をなすものであ
るが、フインの構造が従来と異なるものである。DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to FIGS. 3 and 4 showing one embodiment thereof. Here, the finch tube heat exchanger of the present invention basically has the same structure as the conventional finch tube heat exchanger, but the structure of the fins is different from the conventional one.

第３図、第４図において、平板フイン１ａは、
一定間隔でバーリングされたフインカラー部１ｂ
を有している。このフインカラー部１ｂには伝熱
管２が挿入される。４は前記フイン１ａに形成さ
れた切り起しで、フインカラー部１ｂの近傍にお
ける、矢印方向の空気流れの風下側に存在する止
水域から切り起して、空気の流れる領域まで折り
曲げられている。 In FIGS. 3 and 4, the flat fin 1a is
Fin collar portion 1b burred at regular intervals
have. A heat transfer tube 2 is inserted into this fin collar portion 1b. Reference numeral 4 denotes a cut-and-raised cut formed on the fin 1a, which is cut and raised from a cut-off area that exists on the leeward side of the air flow in the direction of the arrow near the fin collar portion 1b, and is bent up to the area where the air flows. .

上記の構成において、切り起し４は、流れてい
る空気と接触して熱交換することができるため、
元の止水域内にあつた場合と比較して、空気との
熱伝達率は増大し、伝熱性能が大幅に向上する。
また、切り起し４は、空気の流れを乱すので、伝
熱性能がさらに大幅に向上する。 In the above configuration, the cut-and-raised portion 4 can contact and exchange heat with the flowing air;
Compared to the case where it was within the original still water area, the heat transfer coefficient with the air increases, and heat transfer performance is greatly improved.
Moreover, since the cut-and-raised portions 4 disturb the air flow, the heat transfer performance is further significantly improved.

考案の効果本考案のフインチユーブ形熱交換器は、フイン
群の各フインにおける伝熱管群の風下側に発生す
る止水域部を切り起して開口を設け、前記切り起
しを折り曲げて止水域部外へ位置させたもので、
元来止水域にあつて熱伝達にあまり寄与すること
のなかつたフインの一部分が、流れている空気と
接触して熱交換するようになるので、フイン表面
の熱伝達率が大幅に向上し、また前記切り起し
は、空気の流れを乱すので、伝熱性能がさらに大
幅に向上するものである。Effects of the invention In the finch-tube heat exchanger of the present invention, an opening is provided by cutting up the cut-off area that occurs on the leeward side of the heat transfer tube group in each fin of the fin group, and the cut-out area is bent to form the cut-off area. It is located outside,
A portion of the fin that was originally in a still area and did not contribute much to heat transfer comes into contact with the flowing air and exchanges heat, greatly improving the heat transfer coefficient on the fin surface. Furthermore, since the cut and raised portions disturb the air flow, the heat transfer performance is further significantly improved.

[Brief explanation of the drawing]

第１図は従来例のフインチユーブ形熱交換器の
斜視図、第２図は同熱交換器の伝熱管周辺におけ
る熱流体特性図、第３図は本考案の一実施例にお
けるフインチユーブ形熱交換器の要部平面図、第
４図は第３図の−線による断面図である。１……フイン群、１ａ……平板フイン、１ｂ…
…フインカラー部、２……伝熱管、４……切り起
し。 Fig. 1 is a perspective view of a conventional finch tube heat exchanger, Fig. 2 is a thermal fluid characteristic diagram around the heat exchanger tubes of the same heat exchanger, and Fig. 3 is a finch tube heat exchanger according to an embodiment of the present invention. FIG. 4 is a sectional view taken along the - line in FIG. 3. 1...Fin group, 1a...Flat fin, 1b...
...Fin collar part, 2...Heat transfer tube, 4...Cut up.

Claims

[Scope of utility model registration request]

A fin group consisting of a large number of fins arranged in parallel at predetermined intervals and through which air flows, and a cylindrical heat transfer tube group that crosses the fin group orthogonally in multiple stages and through which a refrigerant passes. and providing an opening by cutting up a cutoff area occurring on the leeward side of the heat transfer tube group in each fin of the fin group,
A finch-tube heat exchanger in which the above-mentioned cut-and-raised portion is bent and positioned outside the cut-off area.