JPH0820194B2 - Heat pipe - Google Patents
Heat pipeInfo
- Publication number
- JPH0820194B2 JPH0820194B2 JP61274736A JP27473686A JPH0820194B2 JP H0820194 B2 JPH0820194 B2 JP H0820194B2 JP 61274736 A JP61274736 A JP 61274736A JP 27473686 A JP27473686 A JP 27473686A JP H0820194 B2 JPH0820194 B2 JP H0820194B2
- Authority
- JP
- Japan
- Prior art keywords
- heat pipe
- container
- copper
- hydrogen gas
- water
- 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
Classifications
-
- 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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
-
- 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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0283—Means for filling or sealing heat pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、作動液として水が使用され、コンテナの
材料として水と反応して水素ガスを発生する銅が使用さ
れているヒートパイプに関する。Description: TECHNICAL FIELD The present invention relates to a heat pipe in which water is used as a working fluid and copper which reacts with water to generate hydrogen gas is used as a material of a container.
この明細書において、「銅」という語は、純銅の他に
銅合金を含むものとする。In this specification, the term "copper" shall include copper alloy in addition to pure copper.
従来技術とその問題点 銅製コンテナ内に水が封入されたヒートパイプでは、
銅と水とが反応して水素ガスが発生し、短時間でヒート
パイプの伝熱性能を劣化させるという問題があった。Conventional technology and its problems With a heat pipe in which water is enclosed in a copper container,
There is a problem that copper and water react with each other to generate hydrogen gas, which deteriorates the heat transfer performance of the heat pipe in a short time.
なぜなら、発生した水素ガスは、原子状態でコンテナ
の壁内を拡散し、一部は一定速度でコンテナ外に放出さ
れるが、大部分は次第にコンテナ内の凝縮部に溜まるた
め、蒸気の凝縮を妨げてヒートパイプの伝熱性能の劣化
をまねくのみならず、この劣化は時間の経過とともに加
速度的に進行して増大するので、ヒートパイプの寿命は
使用時間が増えるにつれて急激に短縮するからである。Because the generated hydrogen gas diffuses inside the container wall in an atomic state, and part of it is released outside the container at a constant speed, but most of it gradually accumulates in the condensation part inside the container, so vapor condensation occurs. Not only does this hinder the deterioration of the heat transfer performance of the heat pipe, but this deterioration accelerates and increases with the passage of time, so the life of the heat pipe sharply shortens as the usage time increases. .
そこで、従来、上記のような水素ガスの発生と、水素
ガス発生によるヒートパイプの性能劣化を防止するため
に、コンテナの凝縮部を水素透過性の良いパラジウムに
より形成したり（実開昭50−49064号公報参照）、ある
いはコンテナの凝縮部位にパラジウム線を挿設する（実
公昭56−142号公報参照）ことにより、ヒートパイプ内
に溜まった水素ガスをパラジウムを介してヒートパイプ
の外へ排出するようにしたものが提案されている。しか
しながら、このようなヒートパイプでは、高温度下での
使用の際に増大する水素ガスの発生に対して、水素ガス
の透過排出が追いつかず、伝熱性能の劣化を完全には防
止できないばかりか、高価なパラジウムが必要なために
製造コストが高くなるという問題があった。Therefore, conventionally, in order to prevent the generation of hydrogen gas as described above and the deterioration of the performance of the heat pipe due to the generation of hydrogen gas, the condensation part of the container is formed of palladium having good hydrogen permeability (actually, 49064), or by inserting a palladium wire in the condensing part of the container (see Japanese Utility Model Publication No. 56-142), the hydrogen gas accumulated in the heat pipe is discharged to the outside of the heat pipe via palladium. Something that has been done is proposed. However, in such a heat pipe, permeation and discharge of hydrogen gas cannot catch up with the increase in generation of hydrogen gas during use at high temperature, and not only the deterioration of heat transfer performance cannot be completely prevented. However, there is a problem that the manufacturing cost becomes high because expensive palladium is required.
この発明の目的は、上記の問題を解決し、長期間にわ
たって伝熱性能の劣化を起こすことがなく、しかもコス
トの安いヒートパイプを提供することにある。An object of the present invention is to solve the above problems and to provide a heat pipe that does not cause deterioration of heat transfer performance for a long period of time and is inexpensive.
問題点を解決するための手段 この発明は、作動液として水が使用され、コンテナの
材料として銅が使用されているヒートパイプにおいて、
ウィックとして複合ウィックが使用されており、この複
合ウィックは、コンテナ本体の内面全体に接する円筒状
CuO焼結体の内面がステンレスメッシュ製円筒の外面で
密着状に覆われ、同円筒の両端部がコンテナ本体の内面
にろう付けされてなるものであることを特徴とするもの
である。Means for Solving the Problems The present invention relates to a heat pipe in which water is used as a hydraulic fluid and copper is used as a material of a container,
A composite wick is used as the wick, and this composite wick has a cylindrical shape that contacts the entire inner surface of the container body.
The inner surface of the CuO sintered body is closely covered with the outer surface of the stainless mesh cylinder, and both ends of the cylinder are brazed to the inner surface of the container body.
作用 この発明のヒートパイプは、作動液として水が使用さ
れ、コンテナの材料として銅が使用されているヒートパ
イプにおいて、ウィックとして複合ウィックが使用され
ており、この複合ウィックは、コンテナ本体の内面全体
に接する円筒状CuO焼結体の内面がステンレスメッシュ
製円筒の外面で密着状に覆われ、同円筒の両端部がコン
テナ本体の内面にろう付けされてなるものであるから、
作動液である水とコンテナの銅とが反応して水素ガスが
発生したとしても、この水素ガスは高い性能を有する複
合ウィック中のうちでも表面積の大きい円筒状酸化銅焼
結体により酸化されて効率よく水に戻される。Action The heat pipe of the present invention uses water as the working fluid and copper as the material of the container. In the heat pipe, the composite wick is used as the wick. Since the inner surface of the cylindrical CuO sintered body in contact with is closely covered with the outer surface of the stainless mesh cylinder, both ends of the cylinder are brazed to the inner surface of the container body.
Even if water, which is the working fluid, reacts with copper in the container to generate hydrogen gas, this hydrogen gas is oxidized by the cylindrical copper oxide sintered body with a large surface area in the composite wick having high performance. It is efficiently returned to water.
実施例 以下、この発明の実施例を図面を参照しながら説明す
る。Embodiments Embodiments of the present invention will be described below with reference to the drawings.
第１図および第２図に示されているヒートパイプ（1
1）は、作動液として純水（図示略）が使用され、コン
テナ（２）の材料として銅が使用され、ウィックとして
複合ウィック（13）が使用されている。この複合ウィッ
ク（13）は、コンテナ本体（４）の内面全体に接する円
筒状CuO焼結体（13a）の内面が＃150のステンレスメッ
シュ製円筒（13b）の外面で密着状に覆われ、同円筒（1
3b）の両端部がコンテナ本体（４）の内面にろう付けさ
れてなるものである。The heat pipe (1
In 1), pure water (not shown) is used as the working liquid, copper is used as the material of the container (2), and the composite wick (13) is used as the wick. In this composite wick (13), the inner surface of the cylindrical CuO sintered body (13a) contacting the entire inner surface of the container body (4) is closely covered with the outer surface of the # 150 stainless mesh cylinder (13b). Cylinder (1
Both ends of 3b) are brazed to the inner surface of the container body (4).
ヒートパイプ（11）の蒸発部（11b）側の端部には、
エンドキャップ（６）が、凝縮部（11c）側の端部に
は、ノズル付きエンドキャップ（７）がそれぞれ取り付
けられている。At the end of the heat pipe (11) on the evaporation section (11b) side,
An end cap (7) with a nozzle is attached to each end of the end cap (6) on the side of the condenser (11c).
ヒートパイプ（11）の使用時に、作動液である水とコ
ンテナ（２）の銅との反応により発生した水素ガスは、
酸化銅焼結体（13）によって酸化され、つぎの反応によ
り水に戻る。When the heat pipe (11) is used, the hydrogen gas generated by the reaction between the working fluid water and the copper in the container (2) is
It is oxidized by the copper oxide sintered body (13) and returned to water by the following reaction.
CuO＋H2→Cu＋H2O 発明の効果 この発明のヒートパイプによれば、作動液である水と
コンテナの銅とが反応して水素ガスが発生したとして
も、この水素ガスは高い性能を有する複合ウィック中の
表面積の大きい円筒状酸化銅焼結体により酸化されて効
率よく水に戻されるので、発生した水素ガスによるヒー
トパイプの伝熱性能の劣化が抑制される。CuO + H 2 → Cu + H 2 O Effect of the Invention According to the heat pipe of the present invention, even if hydrogen, which is a working fluid, reacts with copper in the container to generate hydrogen gas, the hydrogen gas has a high performance. Since it is oxidized by the cylindrical copper oxide sintered body having a large surface area and efficiently returned to water, deterioration of heat transfer performance of the heat pipe due to generated hydrogen gas is suppressed.
さらに、上記従来品のようにパラジウムなどの高価な
材料を用いることがないので、この発明によれば、製造
コストの安いヒートパイプを提供することが可能にな
る。Further, unlike the conventional products described above, an expensive material such as palladium is not used, so that according to the present invention, it is possible to provide a heat pipe whose manufacturing cost is low.
第１図はこの発明によるヒートパイプの縦断面図、第２
図は第１図に示すヒートパイプの横断面図である。 （２）……コンテナ、（11）……ヒートパイプ、（13）
ウィック、（13a）……ステンレスメッシュ製円筒、（1
3b）……円筒状CuO焼結体。1 is a longitudinal sectional view of a heat pipe according to the present invention, FIG.
The figure is a cross-sectional view of the heat pipe shown in FIG. (2) …… Container, (11) …… Heat pipe, (13)
Wick, (13a) …… Stainless steel mesh cylinder, (1
3b) ... Cylindrical CuO sintered body.
Claims (1)
（２）の材料として銅が使用されているヒートパイプ
（11）において、ウィックとして複合ウィック（13）が
使用されており、この複合ウィック（13）は、コンテナ
本体（４）の内面全体に接する円筒状CuO焼結体（13a）
の内面がステンレスメッシュ製円筒（13b）の外面で密
着状に覆われ、同円筒（13b）の両端部がコンテナ本体
（４）の内面にろう付けされてなるものであることを特
徴とするヒートパイプ。1. A composite wick (13) is used as a wick in a heat pipe (11) in which water is used as a hydraulic fluid and copper is used as a material for a container (2). 13) is a cylindrical CuO sintered body (13a) that contacts the entire inner surface of the container body (4)
The inner surface of the cylinder is closely covered with the outer surface of the stainless mesh cylinder (13b), and both ends of the cylinder (13b) are brazed to the inner surface of the container body (4). pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61274736A JPH0820194B2 (en) | 1986-11-18 | 1986-11-18 | Heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61274736A JPH0820194B2 (en) | 1986-11-18 | 1986-11-18 | Heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63129297A JPS63129297A (en) | 1988-06-01 |
| JPH0820194B2 true JPH0820194B2 (en) | 1996-03-04 |
Family
ID=17545861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61274736A Expired - Fee Related JPH0820194B2 (en) | 1986-11-18 | 1986-11-18 | Heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0820194B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0469260A1 (en) * | 1990-07-30 | 1992-02-05 | Abb Air Preheater, Inc. | Heat pipe heat exchanger and heat pipe therefor |
| CN100416210C (en) * | 2004-11-04 | 2008-09-03 | 李嘉豪 | heat pipe multilayer capillary tissue forming structure |
| CN108801019B (en) * | 2018-07-26 | 2024-05-07 | 华南理工大学 | Phase change heat transfer element with multi-layer liquid wick structure and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0740855Y2 (en) * | 1985-08-08 | 1995-09-20 | 株式会社フジクラ | Heat pipe |
-
1986
- 1986-11-18 JP JP61274736A patent/JPH0820194B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63129297A (en) | 1988-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |