JPH0486491A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH0486491A JPH0486491A JP19921890A JP19921890A JPH0486491A JP H0486491 A JPH0486491 A JP H0486491A JP 19921890 A JP19921890 A JP 19921890A JP 19921890 A JP19921890 A JP 19921890A JP H0486491 A JPH0486491 A JP H0486491A
- Authority
- JP
- Japan
- Prior art keywords
- fins
- plate fins
- plate
- straight pipe
- straight
- 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
- 239000003507 refrigerant Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- QEVHRUUCFGRFIF-MDEJGZGSSA-N reserpine Chemical compound O([C@H]1[C@@H]([C@H]([C@H]2C[C@@H]3C4=C(C5=CC=C(OC)C=C5N4)CCN3C[C@H]2C1)C(=O)OC)OC)C(=O)C1=CC(OC)=C(OC)C(OC)=C1 QEVHRUUCFGRFIF-MDEJGZGSSA-N 0.000 description 1
Landscapes
- 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〉
この発明は、冷蔵庫、冷凍ショーケース等の蒸発器や凝
縮器等に使用することのできる熱交換器に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a heat exchanger that can be used in evaporators, condensers, etc. of refrigerators, freezer showcases, etc.
〈従来の技術〉
熱交換器は従来から種々提案されており、例えば実公昭
５９−２３９６１号公報では、互いに平行な直管部とこ
れらの直管部を連結するはｔＵ字形の連結管部とを有す
る冷媒管の上記連結管部を扁平状とし、並列状に配列し
た多数のフィンには、上記直管部の外径よりも小さく且
つ連結管部の厚さより大きい幅を有し、且つ両端に直管
部の外径とはメ等しい内径を有する冷媒管嵌合部が設け
られた冷媒管挿入用長孔を開設し、これらの長孔に上記
冷媒管の連結管部が挿通され、直管部が各長孔の両端の
嵌合部に嵌め止めされた熱交換器が提案されている。<Prior Art> Various heat exchangers have been proposed in the past. For example, in Japanese Utility Model Publication No. 59-23961, straight pipe sections that are parallel to each other and a tU-shaped connecting pipe section that connects these straight pipe sections are used. The connecting pipe part of the refrigerant pipe is flat, and the many fins arranged in parallel have a width smaller than the outer diameter of the straight pipe part and larger than the thickness of the connecting pipe part, and have a width at both ends. A long hole for inserting a refrigerant pipe is provided with a refrigerant pipe fitting part having an inner diameter equal to the outer diameter of the straight pipe part, and the connecting pipe part of the refrigerant pipe is inserted into these long holes, and the connecting pipe part of the refrigerant pipe is inserted straight into the long hole. A heat exchanger has been proposed in which tube portions are fitted into fitting portions at both ends of each elongated hole.
〈発明が解決しようとする課題〉
ところで、熱交換器では一般に外部側の熱媒体、例えば
空気流に対して、上流側では充分な熱伝導が行なわれて
熱交換率が高いが、下流側では熱伝導率が低下し、充分
な熱交換が行なわれない場合がある。これはフィンの周
囲に温度境界層が生成し、この温度境界層の厚さが、フ
ィンの先端、即ち空気流の上流側端部では極小であるが
、下流側になるほど温度境界層の厚さが拡大し、最終的
に隣接するフィンの間、換言すると外部側熱媒体の通路
全体が境界Ｍとなって熱伝導が妨げられるためである。<Problems to be Solved by the Invention> Incidentally, in a heat exchanger, generally, sufficient heat conduction is performed on the upstream side with respect to the external heat medium, such as air flow, and the heat exchange rate is high, but on the downstream side, the heat exchange rate is high. Thermal conductivity may decrease and sufficient heat exchange may not take place. This is because a temperature boundary layer is generated around the fin, and the thickness of this temperature boundary layer is minimal at the tip of the fin, that is, at the upstream end of the airflow, but the thickness of the temperature boundary layer increases toward the downstream side. This is because the distance between adjacent fins, in other words, the entire path of the external heat medium becomes a boundary M, and heat conduction is hindered.
く課題を解決するための手段〉
本発明は上記に鑑み提案されたもので、直管部と屈曲状
の連結管部とを有した蛇行状の冷媒パイプをプレートフ
ィンに設けた冷媒管挿入用長孔に挿嵌して構成する熱交
換器において、上記プレートフィンの気流方向の長さを
一対のほゞ平行な直管部の間隔に対応させて、プレート
フィンを上記直管部を挿嵌する２段毎に独立させること
を特徴とする。Means for Solving the Problems The present invention has been proposed in view of the above, and is a method for inserting a refrigerant pipe in which a meandering refrigerant pipe having a straight pipe portion and a bent connecting pipe portion is provided on a plate fin. In a heat exchanger that is configured by being inserted into a long hole, the plate fin is inserted into the straight pipe part so that the length of the plate fin in the airflow direction corresponds to the interval between the pair of substantially parallel straight pipe parts. The feature is that each two stages are made independent.
〈作 用〉
プレートフィンの気流方向に沿った長さを一対の直管部
の間隔に対応させているので、温度境界層の生成を抑制
することができる。<Function> Since the length of the plate fin along the airflow direction is made to correspond to the distance between the pair of straight pipe parts, the generation of a temperature boundary layer can be suppressed.
〈実 施 例〉 以下、本発明を図面の実施例について説明する。<Example> Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.
第１図は本発明に係る熱交換器１の概略正面図であって
、この熱交換器１は、冷媒パイプ２を蛇行状に屈曲させ
、この屈曲した冷媒パイプ２を、プレートフィン３に設
けた長孔４に挿嵌した所謂サーペンタイプのものである
。FIG. 1 is a schematic front view of a heat exchanger 1 according to the present invention, in which a refrigerant pipe 2 is bent in a meandering manner, and the bent refrigerant pipe 2 is mounted on a plate fin 3. It is of the so-called serpen type which is inserted into the elongated hole 4.
冷媒パイプ２管は、互いにはｆ平行な直管部５とこれら
の直管部５を連結するはｔＵ字形の連結管部６とを有し
、即ち直線状のパイプ材をＵ字状に屈曲して形成するも
ので、図示の実施例では、直管部５が正面図において６
段になるように形成している。尚、上記連結管部６は若
干扁平に形成しである。The two refrigerant pipes have straight pipe portions 5 that are parallel to each other and a U-shaped connecting pipe portion 6 that connects these straight pipe portions 5. In other words, the straight pipe material is bent into a U-shape. In the illustrated embodiment, the straight pipe portion 5 is 6 in the front view.
It is formed into tiers. Incidentally, the connecting pipe portion 6 is formed to be slightly flat.
一方、プレートフィン３は、気流方向の長さ、即ちこの
実施例では気流が下から上昇するので高さｈを、一対の
はメ平行な直管部５の間隔に対応する長さとして、上記
直管部５を挿嵌する２段毎に独立させる。また、このプ
レートフィン３には上記したように直管部５を上下２段
且つ前後に２本づつ挿嵌するように、２列の長孔４を設
ける。各長孔４は、上記直管部５の外径よりも小さ（且
つ連結管部６の厚さより大きい幅を有し、且つ上下端に
直管部５の外径とはｆ等しい内径を有する冷媒管嵌合部
７が設けられている。そして、これらの長孔４に冷媒パ
イプ２の連結管部６が挿通され、直管部５が各長孔４の
両端の嵌合部７に嵌め止めされる。On the other hand, the length of the plate fin 3 in the airflow direction, that is, in this embodiment, since the airflow rises from below, the height h is set as the length corresponding to the distance between the pair of parallel straight pipe portions 5. The straight pipe portions 5 are inserted into each two stages independently. Further, as described above, the plate fin 3 is provided with two rows of elongated holes 4 so that the straight pipe portions 5 are inserted in two stages, upper and lower, and two at the front and rear. Each elongated hole 4 has a width smaller than the outer diameter of the straight pipe part 5 (and larger than the thickness of the connecting pipe part 6), and has an inner diameter at the upper and lower ends equal to the outer diameter of the straight pipe part 5. Refrigerant pipe fitting parts 7 are provided.The connecting pipe parts 6 of the refrigerant pipes 2 are inserted into these long holes 4, and the straight pipe parts 5 are fitted into the fitting parts 7 at both ends of each long hole 4. It will be stopped.
従って、プレートフィン３の高さは上下一対の直管部５
の幅より若干大きな程度となり、プレートフィン３の気
流方向の長さを極めて短（でき、温度境界層Ｐの生成を
抑制することが可能となる。即ち、従来の熱交換器のよ
うに各直管を一連のフィンに挿嵌した場合には、第３図
に鎖線で示すような大きな温度境界層Ｐ°が生成して熱
伝導率の低下等の悪影響が出るが、本発明によれば、破
線で示すように分断されて小さな温度境界層Ｐしか生成
しないので、温度境界層による悪影響がでない。Therefore, the height of the plate fin 3 is determined by the pair of upper and lower straight pipe parts 5.
The width of the plate fins 3 in the airflow direction can be made extremely short (and the generation of the temperature boundary layer P can be suppressed. In other words, unlike conventional heat exchangers, each direct When a tube is inserted into a series of fins, a large temperature boundary layer P° as shown by the chain line in FIG. 3 is generated, resulting in adverse effects such as a decrease in thermal conductivity, but according to the present invention, Since the temperature boundary layer P is divided as shown by the broken line and only a small temperature boundary layer P is generated, there is no adverse effect due to the temperature boundary layer.
第４図（Ａ）は、本発明におけるプレートフィン３の一
例を示す図であって、この実施例では、冷媒管嵌合部７
を上下に揃えて長孔４が垂直方向に並ぶように構成しで
ある。FIG. 4(A) is a diagram showing an example of the plate fin 3 in the present invention, and in this embodiment, the refrigerant pipe fitting portion 7
It is configured such that the long holes 4 are aligned vertically and aligned vertically.
また、第４図（Ｂ）は、上下の冷媒管嵌合部７の位置を
若干ズラして長孔４が斜めになるように形成しである。Further, in FIG. 4(B), the positions of the upper and lower refrigerant pipe fitting portions 7 are slightly shifted so that the elongated holes 4 are formed at an angle.
このようにすれば、直管部５が互い他の直管部５の陰に
ならないので、気流が充分に行き渡りプレートフィン３
上の温度分布が均一化され、温度境界層Ｐが生成し雛い
。また、プレートフィン３の高さを更に減少させること
がき、温度境界層Ｐの抑制が容易となる。By doing this, each straight pipe part 5 will not be in the shadow of another straight pipe part 5, so that the airflow will be sufficiently distributed and the plate fins 3
The temperature distribution above is made uniform, and a temperature boundary layer P is generated. Furthermore, the height of the plate fins 3 can be further reduced, and the temperature boundary layer P can be easily suppressed.
また、従来の熱交換器１では、熱交換容量によって熱交
換器１の大きさが決り、それに伴なってプレートフィン
３の大きさも自ら決定せれているので部材の標準化がで
きないが、本発明によれば、直管部５を２段−組として
プレートフィン３の段数を増減することが可能となる。Furthermore, in the conventional heat exchanger 1, the size of the heat exchanger 1 is determined by the heat exchange capacity, and the size of the plate fins 3 is also determined accordingly, making it impossible to standardize the components. Accordingly, it becomes possible to increase or decrease the number of stages of the plate fins 3 by forming the straight pipe portion 5 into a two-stage set.
従って、プレートフィン３の標準化ができ、コスト削減
に有効である。Therefore, the plate fins 3 can be standardized, which is effective in reducing costs.
更に、第１図に示す実施例では、直管部５を挿通する２
段毎にプレートフィン３のピッチを変えている。即ち、
上段ではプレートフィン３を密に設け、中段ではプレー
トフィン３をやや粗に設け、下段ではプレートフィン３
を粗に設けている。このようにプレートフィン３のピッ
チを変えると、冷媒の入口側と出口側における温度差を
考慮して、また、気流の上流側と下流側との温度差を考
慮して、所望の熱交換率に設定することができ、熱交換
器１における上下で熱交換量を均一にするなど実用的価
値が極めて高い。更に、着霜による目詰りも防止できる
。Furthermore, in the embodiment shown in FIG.
The pitch of the plate fins 3 is changed for each stage. That is,
In the upper stage, the plate fins 3 are arranged closely, in the middle stage, the plate fins 3 are arranged somewhat sparsely, and in the lower stage, the plate fins 3 are arranged closely.
are set roughly. By changing the pitch of the plate fins 3 in this way, the desired heat exchange rate can be achieved by taking into account the temperature difference between the inlet and outlet sides of the refrigerant, and the temperature difference between the upstream and downstream sides of the airflow. This has extremely high practical value, as it can make the amount of heat exchange uniform between the upper and lower parts of the heat exchanger 1. Furthermore, clogging due to frost formation can be prevented.
なお、第１図において８は左右の側板である。In addition, in FIG. 1, 8 is the left and right side plates.
以上、本発明を図面の実施例について説明したが、本発
明は上記した実施例に限定されるものではな（、特許請
求の範囲に記載した構成を変更しない限り適宜に実施で
きる。例えば、個々のプレートフィン３を冷媒パイプに
対し傾斜状に若しくは千鳥状に取り付けると、温度境界
層が個々の冷媒パイプの長さしか生じないので幅が極め
て狭くなる。また、図面の実施例では冷媒パイプを２列
とした場合を示したが、１列若しくは３列以上であって
も上記した実施例と同様に実施することができる。Although the present invention has been described above with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments described above. If the plate fins 3 are attached to the refrigerant pipes in an inclined or staggered manner, the width becomes extremely narrow because the temperature boundary layer is generated only the length of each refrigerant pipe. Although the case where there are two rows is shown, the same implementation as in the above-described embodiment can be performed even if there are one row or three or more rows.
〈発明の効果〉
以上要するに本発明は、直管部と屈曲状の連結管部とを
有した蛇行状の冷媒パイプをプレートフィンに設けた冷
媒管挿入用長孔に挿嵌して構成する熱交換器において、
上記プレートフィンの気流方向の長さを一対のほゞ平行
な直管部の間隔に対応させて、プレートフィンを上記直
管部を挿嵌する段毎に独立させたので、フィンの気流方
向の長さを短（構成することができ、温度境界層の生成
を抑制することが可能となり、熱交換率の優れた熱交換
器を提供することができる。また、従来、極めて困難で
あった熱交換器の標準化が可能となり、コスト低減に極
めて有効である。<Effects of the Invention> In summary, the present invention provides a heat sink constructed by inserting a meandering refrigerant pipe having a straight pipe portion and a bent connecting pipe portion into a long hole for inserting a refrigerant pipe provided in a plate fin. In the exchanger,
The length of the plate fin in the airflow direction corresponds to the distance between the pair of substantially parallel straight pipe parts, and the plate fin is made independent for each stage into which the straight pipe parts are inserted, so that the length of the fin in the airflow direction is It is possible to shorten the length of the heat exchanger, which makes it possible to suppress the formation of a temperature boundary layer, and to provide a heat exchanger with excellent heat exchange efficiency. This makes it possible to standardize exchangers, which is extremely effective in reducing costs.
図面は本発明の実施例を示し、第１図は概略正面図、第
２図は左側面図、第３図は温度境界層を示す模式図、第
４図は（Ａ）、（Ｂ）はプレートフィンの説明図である
。
１・・・熱交換器、２・・・冷媒パイプ、３・・・プレ
ートフィン、４・・・長孔、５・・・直管部、６・・・
嵌合部。The drawings show an embodiment of the present invention; FIG. 1 is a schematic front view, FIG. 2 is a left side view, FIG. 3 is a schematic diagram showing a temperature boundary layer, and FIGS. It is an explanatory view of a plate fin. DESCRIPTION OF SYMBOLS 1... Heat exchanger, 2... Refrigerant pipe, 3... Plate fin, 4... Long hole, 5... Straight pipe part, 6...
Fitting portion.
Claims (1)
イプをプレートフィンに設けた冷媒管挿入用長孔に挿嵌
して構成する熱交換器において、上記プレートフィンの
気流方向の長さを一対のほゞ平行な直管部の間隔に対応
させて、プレートフィンを上記直管部を挿嵌する２段毎
に独立させることを特徴とする熱交換器。In a heat exchanger configured by inserting a meandering refrigerant pipe having a straight pipe part and a bent connecting pipe part into a long hole for inserting a refrigerant pipe provided in a plate fin, the air flow direction of the plate fin is A heat exchanger characterized in that plate fins are provided independently for every two stages into which the straight pipe parts are inserted, the length of which corresponds to the distance between a pair of substantially parallel straight pipe parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19921890A JPH0486491A (en) | 1990-07-30 | 1990-07-30 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19921890A JPH0486491A (en) | 1990-07-30 | 1990-07-30 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0486491A true JPH0486491A (en) | 1992-03-19 |
Family
ID=16404105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19921890A Pending JPH0486491A (en) | 1990-07-30 | 1990-07-30 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0486491A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200857A (en) * | 1995-01-20 | 1996-08-06 | Sanden Corp | Refrigerator |
| WO2000053988A1 (en) * | 1999-03-10 | 2000-09-14 | Bundy Corporation | Refrigeration evaporator |
| US7028764B2 (en) | 2002-03-01 | 2006-04-18 | Ti Group Automotives Systems, Llc | Refrigeration evaporator |
| WO2011058705A1 (en) * | 2009-11-10 | 2011-05-19 | パナソニック株式会社 | Heat exchanger, and cooling system and refrigerator using the heat exchanger |
| JP2014052137A (en) * | 2012-09-07 | 2014-03-20 | Sharp Corp | Refrigerator |
| JP2014222144A (en) * | 2014-08-29 | 2014-11-27 | パナソニック株式会社 | Heat exchanger, cooling system using the same and refrigerator |
-
1990
- 1990-07-30 JP JP19921890A patent/JPH0486491A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200857A (en) * | 1995-01-20 | 1996-08-06 | Sanden Corp | Refrigerator |
| WO2000053988A1 (en) * | 1999-03-10 | 2000-09-14 | Bundy Corporation | Refrigeration evaporator |
| JP2002539406A (en) * | 1999-03-10 | 2002-11-19 | バンディ コーポレーション | Cooling evaporator |
| AU768788B2 (en) * | 1999-03-10 | 2004-01-08 | Bundy Corporation | Refrigeration evaporator |
| US7028764B2 (en) | 2002-03-01 | 2006-04-18 | Ti Group Automotives Systems, Llc | Refrigeration evaporator |
| WO2011058705A1 (en) * | 2009-11-10 | 2011-05-19 | パナソニック株式会社 | Heat exchanger, and cooling system and refrigerator using the heat exchanger |
| JP2011102656A (en) * | 2009-11-10 | 2011-05-26 | Panasonic Corp | Heat exchanger, cooling system using the same, and refrigerator |
| CN102575911A (en) * | 2009-11-10 | 2012-07-11 | 松下电器产业株式会社 | Heat exchanger, and cooling system and refrigerator using the heat exchanger |
| JP2014052137A (en) * | 2012-09-07 | 2014-03-20 | Sharp Corp | Refrigerator |
| JP2014222144A (en) * | 2014-08-29 | 2014-11-27 | パナソニック株式会社 | Heat exchanger, cooling system using the same and refrigerator |
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