JPH05213295A - Heat pipe - Google Patents
Heat pipeInfo
- Publication number
- JPH05213295A JPH05213295A JP4004364A JP436492A JPH05213295A JP H05213295 A JPH05213295 A JP H05213295A JP 4004364 A JP4004364 A JP 4004364A JP 436492 A JP436492 A JP 436492A JP H05213295 A JPH05213295 A JP H05213295A
- Authority
- JP
- Japan
- Prior art keywords
- ammonia
- heat
- heat pipe
- pipe
- aluminum alloy
- 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.)
- Withdrawn
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
- F28D15/0258—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 means to remove contaminants, e.g. getters
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はヒートパイプに関し、特
に人工衛星などの宇宙機の熱制御用に利用するヒートパ
イプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pipe, and more particularly to a heat pipe used for heat control of a spacecraft such as an artificial satellite.
【０００２】[0002]
【従来の技術】従来の、アンモニアを作動液とするアル
ミニウム合金管のヒートパイプは、図２に示すようにウ
イック（ｗｉｃｋ）１を有する中空のウイック付アルミ
ニウム素管６及び内部に封入されたアンモニア蒸気８及
びアンモニア液９から構成されている。2. Description of the Related Art A conventional heat pipe of an aluminum alloy tube using ammonia as a working fluid is a hollow aluminum wick-equipped tube 6 having a wick 1 and ammonia enclosed therein as shown in FIG. It is composed of steam 8 and ammonia liquid 9.
【０００３】ヒートパイプの動作原理について図２を引
用して説明する。まず、加熱部７から加えられた熱は、
アンモニア液９に伝えられる。これにより、アンモニア
液９は気化してアンモニア蒸気８となり、凝縮部へ移動
する。凝縮部２において、アンモニア蒸気８はアルミニ
ウム合金素管６へ熱を放出し、アンモニア液９へ戻る。
アンモニア液９は、ウイック１の毛細管力により、再び
加熱部７へ運ばれる。これらの熱輸送サイクルが繰り返
されることにより、大量の熱を加熱部７から凝縮部２へ
輸送することが可能となっている。The operating principle of the heat pipe will be described with reference to FIG. First, the heat applied from the heating unit 7 is
It is transmitted to the ammonia solution 9. As a result, the ammonia liquid 9 is vaporized into the ammonia vapor 8 and moves to the condenser. In the condenser 2, the ammonia vapor 8 releases heat to the aluminum alloy base pipe 6 and returns to the ammonia liquid 9.
The ammonia solution 9 is carried to the heating section 7 again by the capillary force of the wick 1. By repeating these heat transport cycles, it is possible to transport a large amount of heat from the heating unit 7 to the condensing unit 2.
【０００４】[0004]
【発明が解決しようとする課題】上述した従来のヒート
パイプでは、アンモニアの封入前のアルミニウム合金素
管のベーキングの不足等で、アルミニウム中の水分の除
去が不完全であると、アンモニアを封入後に上述した水
分がヒートパイプ内部に漏洩する。水分の存在下では、
アンモニアはアルカリ性を示すため、アンモニアがアル
ミニウムと化学反応を起こし、水素ガスを発生させる。In the above-mentioned conventional heat pipe, if the moisture in aluminum is not completely removed due to insufficient baking of the aluminum alloy raw pipe before the ammonia is filled, the ammonia is filled after the ammonia is filled. The water content described above leaks into the heat pipe. In the presence of moisture,
Since ammonia has an alkaline property, ammonia chemically reacts with aluminum to generate hydrogen gas.
【０００５】また、上述した反応とは別に、宇宙放射線
の影響により、ヒートパイプ内部のアンモニアが水素ガ
ス、窒素ガス等に分解する。これにより生じた水素ガ
ス、窒素ガス等はヒートパイプ内部に蓄積され、これら
のガスがヒートパイプの凝縮部を占有するために、ヒー
トパイプの伝熱特性を著しく劣化させることが避けられ
ないという欠点がある。In addition to the above reaction, ammonia in the heat pipe is decomposed into hydrogen gas, nitrogen gas, etc. under the influence of cosmic radiation. Hydrogen gas, nitrogen gas, etc. generated by this are accumulated inside the heat pipe, and these gases occupy the condensing part of the heat pipe, so that it is unavoidable that the heat transfer characteristics of the heat pipe are significantly deteriorated. There is.
【０００６】本発明の目的は上述した欠点を除去し、水
素ガス発生による伝熱特性の劣化を著しく抑圧したヒー
トパイプを提供することにある。An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a heat pipe in which deterioration of heat transfer characteristics due to generation of hydrogen gas is significantly suppressed.
【０００７】[0007]
【課題を解決するための手段】本発明のヒートパイプ
は、アルミ合金管にアンモニアを作動液として封入し、
人工衛星などの宇宙機の熱制御に供するヒートパイプに
おいて、内部に水素貯蔵合金を配設して、内部に発生す
る水素ガスを吸入させる構造を有する。A heat pipe according to the present invention comprises an aluminum alloy pipe filled with ammonia as a working fluid,
A heat pipe used for heat control of a spacecraft such as an artificial satellite has a structure in which a hydrogen storage alloy is disposed inside and a hydrogen gas generated inside is sucked.
【０００８】[0008]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００９】図１は本発明の一実施例のヒートパイプの
縦断面図である。FIG. 1 is a vertical sectional view of a heat pipe according to an embodiment of the present invention.
【００１０】図１に示す実施例は、ヒートパイプの凝縮
部２側に水素貯蔵合金５と、この水素貯蔵合金を内設す
る水素貯蔵合金用ブロック１０を設けている。この水素
貯蔵合金用ブロック１０は、アンモニア液９の進入を防
止する液止め３と、水素貯蔵合金５が水素貯蔵合金用ブ
ロック外に散逸することを防止する多孔性のメッシュ４
とを備えてヒートパイプ動作部分１１と分離されてい
る。In the embodiment shown in FIG. 1, a hydrogen storage alloy 5 and a hydrogen storage alloy block 10 in which the hydrogen storage alloy is installed are provided on the condensing portion 2 side of the heat pipe. The hydrogen storage alloy block 10 includes a liquid stopper 3 that prevents the ammonia solution 9 from entering, and a porous mesh 4 that prevents the hydrogen storage alloy 5 from dissipating outside the hydrogen storage alloy block.
And is separated from the heat pipe operating portion 11.
【００１１】次に、本実施例の動作について説明する。Next, the operation of this embodiment will be described.
【００１２】前述した水分の存在するときのアルミニウ
ムとアンモニアの反応や宇宙線等によるアンモニアの分
解で生じた水素ガスは、は、アンモニア蒸気８に押され
て、メッシュ４を介して水素貯蔵合金用ブロック１０に
進入し、水素貯蔵合金５に吸着される。これにより、ヒ
ートパイプの凝縮部２は水素ガスで占有されることがな
くなり、水素ガスが発生することによる、伝熱性能の劣
化を避けることができる。The hydrogen gas produced by the reaction between aluminum and ammonia in the presence of water and the decomposition of ammonia by cosmic rays is pushed by the ammonia vapor 8 and is used for hydrogen storage alloy through the mesh 4. It enters the block 10 and is adsorbed by the hydrogen storage alloy 5. As a result, the condensing part 2 of the heat pipe is not occupied by the hydrogen gas, and the deterioration of the heat transfer performance due to the generation of the hydrogen gas can be avoided.
【００１３】アンモニアの分解の場合には、水素ガス以
外に窒素ガスも発生するが、ガス体積比で考察すると７
５％は水素ガスであるので、十分な効果が確保できる。In the case of decomposing ammonia, nitrogen gas is also generated in addition to hydrogen gas.
Since 5% is hydrogen gas, a sufficient effect can be secured.
【００１４】なお、水素貯蔵合金の選定例としては、Ｌ
ａＮｉなどが考えられる。As an example of selecting a hydrogen storage alloy, L
aNi or the like is considered.
【００１５】[0015]
【発明の効果】以上説明したように本発明は、ヒートパ
イプ内部に生ずる水素ガスを、水素貯蔵合金で吸着させ
ることにより、水素ガス発生によるヒートパイプの伝熱
性能の劣化を著しく抑圧しうる効果がある。As described above, according to the present invention, the hydrogen gas generated inside the heat pipe is adsorbed by the hydrogen storage alloy, so that the deterioration of the heat transfer performance of the heat pipe due to the generation of hydrogen gas can be significantly suppressed. There is.
【図１】本発明の一実施例のヒートパイプの縦断面図で
ある。FIG. 1 is a vertical cross-sectional view of a heat pipe according to an embodiment of the present invention.
【図２】従来のヒートパイプの縦断面図である。FIG. 2 is a vertical sectional view of a conventional heat pipe.
１ ウイック ２ 凝縮部 ３ 液止め ４ メッシュ ５ 水素貯蔵合金 ６ ウイック付アルミニウム合金素管 ７ 加熱部 ８ アンモニア蒸気 ９ アンモニア液 １０ 水素貯蔵合金用ブロック １１ ヒートパイプ動作部分 1 Wick 2 Condensing part 3 Liquid stop 4 Mesh 5 Hydrogen storage alloy 6 Aluminum alloy tube with wick 7 Heating part 8 Ammonia vapor 9 Ammonia liquid 10 Hydrogen storage alloy block 11 Heat pipe working part
Claims (1)
て封入し、人工衛星などの宇宙機の熱制御に供するヒー
トパイプにおいて、内部に水素貯蔵合金を配設して、内
部に発生する水素ガスを吸入させることを特徴とするヒ
ートパイプ。1. In a heat pipe for enclosing ammonia as a working fluid in an aluminum alloy tube and providing the heat control of a spacecraft such as an artificial satellite, a hydrogen storage alloy is disposed inside to generate hydrogen gas inside. A heat pipe characterized by being inhaled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4004364A JPH05213295A (en) | 1992-01-14 | 1992-01-14 | Heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4004364A JPH05213295A (en) | 1992-01-14 | 1992-01-14 | Heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05213295A true JPH05213295A (en) | 1993-08-24 |
Family
ID=11582327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4004364A Withdrawn JPH05213295A (en) | 1992-01-14 | 1992-01-14 | Heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05213295A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007086353A1 (en) * | 2006-01-24 | 2007-08-02 | Nec Corporation | Liquid-cooled heat radiation device |
| JP2007327719A (en) * | 2006-06-09 | 2007-12-20 | Denso Corp | Exhaust heat recovery device |
| KR100984969B1 (en) * | 2008-06-05 | 2010-10-04 | 이규정 | Heat pipe |
| US10225953B2 (en) | 2014-10-31 | 2019-03-05 | Thermal Corp. | Vehicle thermal management system |
-
1992
- 1992-01-14 JP JP4004364A patent/JPH05213295A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007086353A1 (en) * | 2006-01-24 | 2007-08-02 | Nec Corporation | Liquid-cooled heat radiation device |
| US8081460B2 (en) | 2006-01-24 | 2011-12-20 | Nec Corporation | Liquid-cooled heat radiator |
| JP4892493B2 (en) * | 2006-01-24 | 2012-03-07 | 日本電気株式会社 | Liquid-cooled heat dissipation device |
| JP2007327719A (en) * | 2006-06-09 | 2007-12-20 | Denso Corp | Exhaust heat recovery device |
| KR100984969B1 (en) * | 2008-06-05 | 2010-10-04 | 이규정 | Heat pipe |
| US10225953B2 (en) | 2014-10-31 | 2019-03-05 | Thermal Corp. | Vehicle thermal management system |
| US10932392B2 (en) | 2014-10-31 | 2021-02-23 | Aavid Thermal Corp. | Vehicle thermal management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990408 |