JPH073319B2 - Heat transfer tube - Google Patents
Heat transfer tubeInfo
- Publication number
- JPH073319B2 JPH073319B2 JP60283511A JP28351185A JPH073319B2 JP H073319 B2 JPH073319 B2 JP H073319B2 JP 60283511 A JP60283511 A JP 60283511A JP 28351185 A JP28351185 A JP 28351185A JP H073319 B2 JPH073319 B2 JP H073319B2
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- transfer tube
- flow path
- refrigerant
- slits
- 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
- 239000002826 coolant Substances 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Landscapes
- 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 本発明はエアコンや冷蔵庫等に用いられる管内を気液二
相流動する流体用の伝熱管に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer tube for a fluid used in an air conditioner, a refrigerator or the like, which causes a gas-liquid two-phase flow in the tube.
従来の技術 従来のこの種の伝熱管は第４図のような構造になってい
た。すなわち、伝熱管１は全体として偏平形状であり、
その内部に複数の矩形流路２が形成されており、通常押
し出し成形等により製作される。そして、複数の矩形流
路２は縦長比がかなり大きい長方形である。Conventional Technology A conventional heat transfer tube of this type has a structure as shown in FIG. That is, the heat transfer tube 1 has a flat shape as a whole,
A plurality of rectangular flow paths 2 are formed in the inside thereof and are usually manufactured by extrusion molding or the like. The plurality of rectangular flow paths 2 are rectangular with a large aspect ratio.
このような構成において、例えば蒸発器に用いた場合、
複数の矩形流路２内を流動する冷媒は伝熱管１外を流動
する空気と熱交換し蒸発していく。In such a configuration, when used in an evaporator, for example,
The refrigerant flowing in the plurality of rectangular flow paths 2 exchanges heat with the air flowing outside the heat transfer tube 1 to evaporate.
発明が解決しようとする問題点 しかし、このような構造のものでは、第５図に示すよう
に冷媒の表面張力の影響により、液冷媒は矩形流路２の
短辺部に多量に偏在して流動し長辺には殆んど存在しな
い。However, in the case of such a structure, as shown in FIG. 5, due to the influence of the surface tension of the refrigerant, the liquid refrigerant is unevenly distributed in a short side portion of the rectangular flow path 2. It flows and almost does not exist on the long side.
管外流体と熱交換する伝熱面は矩形流路２の長辺部であ
る。従ってそこに蒸発すべき液冷媒がないから伝熱性能
が著しく低い。The heat transfer surface that exchanges heat with the fluid outside the tube is the long side portion of the rectangular flow path 2. Therefore, since there is no liquid refrigerant to be evaporated there, the heat transfer performance is extremely low.
そこで、本発明は縦長比がかなり大きい矩形流路の長辺
部に液冷媒を流動させて伝熱性能を著しく向上させた伝
熱管を提供するものである。Therefore, the present invention provides a heat transfer tube in which a liquid refrigerant is made to flow in the long side portion of a rectangular flow path having a considerably large aspect ratio, and the heat transfer performance is remarkably improved.
問題点を解決するための手段 本発明の伝熱管は、冷媒流路となる平行なスリットを複
数本設けた平板状の流路部材の両面に、前記複数のスリ
ットに対応した部分に各々複数の微細溝を設けた平板状
の外壁部材を積層一体化してなるものである。Means for Solving the Problems The heat transfer tube of the present invention has a plurality of parallel slits serving as a refrigerant flow path on both sides of a flat plate-like flow path member, each of which has a plurality of portions corresponding to the plurality of slits. It is formed by laminating flat plate-shaped outer wall members provided with fine grooves.
作 用 このような手段により形成される縦長比のかなり大きい
矩形流路の長辺部に微細溝が設けられることになり表面
張力の影響により微細溝に液冷媒が保持されるので伝熱
性能が著しく向上する。The fine groove is formed on the long side of the rectangular flow path formed by such means with a considerably large aspect ratio, and the liquid refrigerant is held in the fine groove due to the effect of surface tension, so the heat transfer performance is improved. Remarkably improved.
実施例 第１図は本発明の一実施例の平板状伝熱管11の分解斜視
図である。流路部材12には冷媒流路となるスリット13が
複数本平行に設けられている。スリット13の幅は流路部
材12の板厚に比べ５倍以上とかなり大きい。流路部材12
の両側には積層時に冷媒流路外壁となる外壁部材14が位
置する。Embodiment FIG. 1 is an exploded perspective view of a flat plate heat transfer tube 11 according to an embodiment of the present invention. The flow path member 12 is provided with a plurality of slits 13 serving as a coolant flow path in parallel. The width of the slit 13 is considerably larger than the plate thickness of the flow path member 12 by 5 times or more. Flow path member 12
Outer wall members 14 that serve as outer walls of the refrigerant flow path when laminated are located on both sides of the outer wall member 14.
外壁部材14は流路部材12と同一の外寸法を有し、流路部
材12に設けられた複数のスリット13を互に連通させ、し
かも冷媒の出入口管15に通ずるヘッダー部を構成する隆
起16が設けられている。さらに外壁部材14には流路部材
12に設けられた複数のスリット13に対応した部分に各々
複数の微細溝17をエッチング加工等により設けている。
この場合、複数の微細溝17はスリット13で形成される冷
媒流路に平行になるよう設けている。The outer wall member 14 has the same outer dimension as that of the flow path member 12, the plurality of slits 13 provided in the flow path member 12 are communicated with each other, and a ridge 16 that constitutes a header part communicating with the refrigerant inlet / outlet pipe 15 is formed. Is provided. Furthermore, the outer wall member 14 has a flow path member.
A plurality of fine grooves 17 are provided in portions corresponding to the plurality of slits 13 provided in 12 by etching or the like.
In this case, the plurality of fine grooves 17 are provided so as to be parallel to the coolant passage formed by the slit 13.
上記３枚の部材12,14を積層し一体化ることにより平板
状伝熱管11が構成されている。The plate-shaped heat transfer tube 11 is formed by stacking and integrating the above three members 12 and 14.
このようにして形成される矩形流路の１つの拡大断面図
を第２図に示す。すなわちスリット13で形成される冷媒
流路は縦長比の大きい矩形であり、しかも管外流体と熱
交換する伝熱面となる長辺部に複数の微細溝17が設けら
れている。One enlarged cross-sectional view of the rectangular flow path formed in this way is shown in FIG. That is, the refrigerant flow path formed by the slit 13 is a rectangle having a large aspect ratio, and moreover, a plurality of fine grooves 17 are provided on the long side portion which is a heat transfer surface for exchanging heat with the fluid outside the tube.
したがって冷媒流路内において、液冷媒18は表面張力の
影響によって微細溝17内に保持されながら流動するの
で、蒸発熱伝達が向上し伝熱性能が著しく向上する。Therefore, in the refrigerant channel, the liquid refrigerant 18 flows while being held in the fine grooves 17 due to the influence of the surface tension, so that the evaporation heat transfer is improved and the heat transfer performance is remarkably improved.
またこの微細溝17は、ヘッダ部を構成する隆起16の部分
にも設けられているので、気液二相で隆起16に流入した
冷媒がスリット13で形成される複数の冷媒流路に分岐さ
れる時も各微細溝17に液冷媒が保持され、蒸発に必要な
液冷媒を各冷媒流路に均等に分流することが可能にな
り、この面からも伝熱性能が向上する。Further, since the fine groove 17 is also provided in the portion of the ridge 16 that constitutes the header portion, the refrigerant flowing into the ridge 16 in the gas-liquid two-phase is branched into a plurality of refrigerant flow paths formed by the slit 13. The liquid refrigerant is retained in each of the fine grooves 17 during the cooling, and the liquid refrigerant required for evaporation can be evenly divided into the respective refrigerant flow paths, which also improves the heat transfer performance.
次に第３図は本発明の他の一実施例であり、外壁部材14
には流路部材12に設けられた複数のスリット13に対応し
た部分に各々複数の微細溝をスリット13で形成される冷
媒流路に垂直になるよう設けている。この場合も作用効
果は前述の第１図に示す実施例の場合と同様である。Next, FIG. 3 shows another embodiment of the present invention.
At the portion corresponding to the plurality of slits 13 provided in the flow path member 12, a plurality of fine grooves are provided so as to be perpendicular to the refrigerant flow path formed by the slits 13. In this case also, the function and effect are the same as in the case of the embodiment shown in FIG.
発明の効果 本発明の伝熱管は、冷媒流路となる平行なスリットを複
数本設けた平板状の流路部材の両面に、前記複数のスリ
ットに対応した部分に各々複数の微細溝を設けた平板状
の外壁部材を積層一体化した構成であるから、比較的簡
単な加工で微細溝を外壁部材に構成でき、これによって
微細溝に液冷媒が保持されて伝熱性能が著しく向上する
と共に液冷媒の均等分流も可能となる。EFFECTS OF THE INVENTION The heat transfer tube of the present invention has a plurality of parallel slits serving as a coolant channel, and both sides of a flat plate-shaped channel member provided with a plurality of fine grooves at portions corresponding to the plurality of slits. Since the flat outer wall members are laminated and integrated, the fine grooves can be formed in the outer wall member by a relatively simple process, whereby the liquid refrigerant is retained in the fine grooves and the heat transfer performance is significantly improved and the liquid Even distribution of the refrigerant is possible.
第１図は本発明の一実施例による伝熱管の分解斜視図、
第２図はスリットで形成される冷媒流路の拡大断面図、
第３図は他の実施例による伝熱管の要部斜視図、第４
図，第５図は従来例による伝熱管の斜視図および断面図
である。 11……伝熱管、12……流路部材、13……スリット、14…
…外壁部材、17……微細溝。FIG. 1 is an exploded perspective view of a heat transfer tube according to an embodiment of the present invention,
FIG. 2 is an enlarged cross-sectional view of a coolant channel formed by a slit,
FIG. 3 is a perspective view of a main part of a heat transfer tube according to another embodiment, FIG.
FIG. 5 and FIG. 5 are a perspective view and a sectional view of a conventional heat transfer tube. 11 ... Heat transfer tube, 12 ... Flow path member, 13 ... Slit, 14 ...
… Outer wall member, 17 …… Fine groove.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西脇 文俊 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 実開 昭60−16890（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fumitoshi Nishiwaki 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References
Claims (1)
けた平板状の流路部材の両面に、前記複数のスリットに
対応した部分に各々複数の微細溝を設けた平板状の外壁
部材を積層一体化し、縦長比が十分大きい矩形流路を構
成した伝熱管。1. A flat plate-shaped outer wall member in which a plurality of fine grooves are provided in portions corresponding to the plurality of slits on both sides of a flat plate-shaped flow channel member provided with a plurality of parallel slits serving as a coolant flow channel. Is a heat transfer tube that has a rectangular flow path with a sufficiently long aspect ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60283511A JPH073319B2 (en) | 1985-12-17 | 1985-12-17 | Heat transfer tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60283511A JPH073319B2 (en) | 1985-12-17 | 1985-12-17 | Heat transfer tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62142997A JPS62142997A (en) | 1987-06-26 |
| JPH073319B2 true JPH073319B2 (en) | 1995-01-18 |
Family
ID=17666483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60283511A Expired - Lifetime JPH073319B2 (en) | 1985-12-17 | 1985-12-17 | Heat transfer tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073319B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6016890U (en) * | 1983-07-14 | 1985-02-05 | 三菱アルミニウム株式会社 | Heat exchanger |
-
1985
- 1985-12-17 JP JP60283511A patent/JPH073319B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62142997A (en) | 1987-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |