JPH0697150B2 - How to inject the working fluid into the heat pipe - Google Patents
How to inject the working fluid into the heat pipeInfo
- Publication number
- JPH0697150B2 JPH0697150B2 JP14634386A JP14634386A JPH0697150B2 JP H0697150 B2 JPH0697150 B2 JP H0697150B2 JP 14634386 A JP14634386 A JP 14634386A JP 14634386 A JP14634386 A JP 14634386A JP H0697150 B2 JPH0697150 B2 JP H0697150B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- temperature
- working fluid
- heat pipe
- hydraulic fluid
- 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
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
- F28D15/0283—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)
- Jet Pumps And Other Pumps (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、ヒートパイプを製造するにあたり、その容
器（コンテナ）内に熱の輸送を行なう作動液を注入する
方法に関し、特に内径の小さい小型のヒートパイプを製
造する場合に有効に適用することのできる注入方法に関
するものである。Description: TECHNICAL FIELD The present invention relates to a method for injecting a working liquid into a container of a heat pipe for producing a heat pipe, and more particularly to a small heat pipe having a small inner diameter. The present invention relates to an injection method that can be effectively applied when manufacturing pipes.
従来の技術 周知のようにヒートパイプは容器（コンテナ）内部に封
入した作動液が外部からの入熱によって蒸発し、その蒸
気が容器内の温度の低い箇所に流れて放熱かつ凝縮する
ことにより、作動液の潜熱として熱の輸送を行なうもの
である。したがって作動液のこのような挙動を確実なら
しめるために、容器内から空気などの非凝縮性ガスを真
空排気した状態で作動液を注入する必要があり、従来、
その方法として、加熱追出し法やガス液化法あるいは真
空ポンプ法が、例えば「実用ヒートパイプ」（日刊工業
新聞社発行）によって紹介されている。ここで加熱追出
し法は、作動液を注入した容器を外部から加熱し、その
蒸気で容器の内部を満することにより空気を排気する方
法であり、またガス液化法は、常温常圧で気体となる作
動流体を減圧した容器内に移しかえ、しかる後例えば容
器を加熱してフラッシングを行なって作動流体蒸気で空
気を排気する方法である。さらに真空ポンプ法は、容器
に真空ポンプと作動液タンクとをバルブを介してそれぞ
れ接続しておき、真空ポンプにより容器内からの吸引排
気と作動液タンクからの容器内への作動液の注入とを交
互に行なう方法である。As is well known in the prior art, in heat pipes, the working fluid sealed inside the container (container) evaporates due to heat input from the outside, and the steam flows to a location with low temperature inside the container to radiate and condense, It transfers heat as latent heat of the hydraulic fluid. Therefore, in order to ensure such behavior of the hydraulic fluid, it is necessary to inject the hydraulic fluid in a state where the non-condensable gas such as air is evacuated from the container.
As the method, a heat-discharging method, a gas liquefaction method, or a vacuum pump method is introduced by, for example, "Practical heat pipe" (published by Nikkan Kogyo Shimbun). Here, the heating-discharging method is a method in which the container in which the working fluid is injected is heated from the outside and the air is exhausted by filling the inside of the container with the vapor, and the gas liquefaction method is a gas at normal temperature and normal pressure. In this method, the working fluid is transferred to a depressurized container, and then the container is heated to perform flushing and the air is exhausted by the working fluid vapor. Further, in the vacuum pump method, a vacuum pump and a hydraulic fluid tank are connected to a container through a valve, respectively, and suction and exhaust from the inside of the container and injection of the hydraulic fluid from the hydraulic fluid tank into the container are performed by the vacuum pump. Is an alternate method.
発明が解決しようとする問題点 しかるに前述した加熱追出し法やガス液化法では、何ら
かの方法で作動液を容器の内部に予め入れる必要がある
が、容器に設けてある注入ノズルは、封止を容易かつ確
実ならしめるために内径が2mm程度の細いものであるか
ら、作動液の注入が困難であり、特に加熱追出し法で
は、容器の内部が大気圧となっているから、空気の排気
を予め行なわなければならない。加熱追出し法に比べて
ガス液化法や真空ポンプ法では、容器の内部を減圧する
から、細いノズルであっても作動液が容器の内部に流れ
込むが、細いノズルに対する真空ポンプ接続が困難であ
るのみならず、その作業に時間がかかる問題があった。Problems to be Solved by the Invention However, in the heating-discharging method and the gas liquefaction method described above, it is necessary to put the working liquid into the container in advance by some method, but the injection nozzle provided in the container is easy to seal. In addition, it is difficult to inject the hydraulic fluid because it has a thin inner diameter of about 2 mm to ensure reliable operation.In particular, in the heating-discharging method, since the inside of the container is at atmospheric pressure, air is exhausted beforehand. There must be. In the gas liquefaction method and the vacuum pump method, the pressure inside the container is reduced compared to the heating-discharging method, so the working fluid flows into the container even with a thin nozzle, but it is difficult to connect the vacuum pump to the thin nozzle. However, there was a problem that the work took time.
この発明は上記の事情に鑑み、一定量の作動液の注入を
正確かつ容易に行なうことができ、しかも小型のートパ
イプに対して有利な注入方法を提供することを目的とす
るものである。The present invention has been made in view of the above circumstances, and an object thereof is to provide an injection method which can accurately and easily inject a fixed amount of hydraulic fluid and which is advantageous for a small pipe.
問題点を解決するための手段 この発明は、上記の目的を達成するために、一方の端部
を開口させたヒートパイプ用容器に蒸発および凝縮を行
なって熱の輸送を行なう作動液を注入するにあたり、前
記容器を凝固点以上の予め定めた第１温度に維持した作
動液中に開口端まで浸漬する操作と、前記第１温度より
高くかつ作動液の沸点以下の予め定めた第２温度にその
容器を維持する操作とを交互に行なって容器内に作動液
を吸入させることを特徴とする方法である。Means for Solving the Problems In order to achieve the above-mentioned object, the present invention injects a working fluid for vaporizing and condensing and transporting heat into a heat pipe container having one end opened. At this time, an operation of immersing the container up to the open end in a working fluid maintained at a predetermined first temperature equal to or higher than the freezing point, and a second temperature higher than the first temperature and lower than a boiling point of the working fluid The method is characterized in that the operation of maintaining the container is alternately performed to suck the working fluid into the container.
作用 容器を第１温度の作動液中に浸漬した後、その容器を第
２温度に設定すれば、内部の空気等の気体が膨張し、そ
の膨張分の気体が排気される。ついでその容器を第１温
度に維持した作動液中に浸漬すれば、内部の気体が収縮
することにより、その収縮分に応じて作動液が容器内に
吸入される。これを再度第２温度まで昇温すれば、内部
の気体が膨張して膨張分が排気され、したがって更にそ
の容器を第１温度の作動液中に浸漬すれば、内部の気体
が収縮分に応じた作動液が容器中に吸入される。以降、
同様の操作を繰返すことにより作動液が容器に吸入さ
れ、その量は第１温度と第２温度との温度差および繰返
し回数によって決まる。When the container is set to the second temperature after the container is immersed in the hydraulic fluid at the first temperature, the gas such as the air inside expands and the expanded gas is exhausted. Then, when the container is immersed in the working liquid maintained at the first temperature, the gas inside contracts, and the working liquid is sucked into the container according to the contracted amount. When the temperature is raised again to the second temperature, the gas inside expands and the expansion is exhausted. Therefore, if the container is further immersed in the working fluid at the first temperature, the gas inside contracts according to the contraction. Working fluid is sucked into the container. Or later,
The hydraulic fluid is sucked into the container by repeating the same operation, and the amount thereof is determined by the temperature difference between the first temperature and the second temperature and the number of repetitions.
実施例 つぎにこの発明の方法を第１図に示す実施例に基づいて
詳細に説明する。Embodiment Next, the method of the present invention will be described in detail based on the embodiment shown in FIG.
この発明の方法を実施するにあたって、先ずヒートパイ
プとすべき容器１を用意する。この容器１には予め洗浄
を施すとともに、一方の端部に内径が2mm程度のノズル
２を取り付け、かつ他方の端部を密閉しておき、封入す
べき作動液３の凝固点よりわずか高い程度の第１温度T0
（Ｋ）の容器１を作動液３の沸点よりわずか低い第２温
度T1（Ｋ）に設定した恒温槽４に入れる。容器１の全体
が第２温度T1になった後に、その容器１を第１温度T0に
維持した作動液３中にノズル２を上向きにして完全に浸
漬する。したがって容器１はT0→T1→T0の順に昇温およ
び冷却されることになるから、容器１の容積（すなわち
当初の空気の容積）をV0とした場合、その昇温および冷
却の１サイクルで容器１内に残留する空気の容積V1は、
ボイル・シャルルの法則に従い、 V1＝V0・T0/T1＝Ａ・V0 となり、また作動液の吸入量はVc1は、 Vc1＝V0−V1＝（１−Ａ）・V0 となる。In carrying out the method of the present invention, first, the container 1 to be a heat pipe is prepared. This container 1 is preliminarily washed, and a nozzle 2 having an inner diameter of about 2 mm is attached to one end and the other end is hermetically sealed so that the working liquid 3 to be enclosed has a temperature slightly higher than the freezing point. First temperature T0
The container 1 of (K) is placed in a constant temperature bath 4 set to a second temperature T1 (K) slightly lower than the boiling point of the hydraulic fluid 3. After the entire container 1 reaches the second temperature T1, the container 1 is completely immersed in the hydraulic fluid 3 which is maintained at the first temperature T0 with the nozzle 2 facing upward. Therefore, since the container 1 is heated and cooled in the order of T0 → T1 → T0, if the volume of the container 1 (that is, the initial volume of air) is V0, the container is heated and cooled in one cycle. The volume V1 of air remaining in 1 is
According to Boyle-Charles' law, V1 = V0 · T0 / T1 = A · V0, and the intake amount of hydraulic fluid Vc1 is Vc1 = V0−V1 = (1-A) · V0.
このようにして作動液の吸入を行なった容器１を再度恒
温槽４に入れると、残留している空気が膨張して膨張分
が排気され、しかる後容器１を作動液３中に前述の場合
と同様に浸漬すると、空気が収縮して作動液３を吸入す
る。その場合の空気残量V2は、 V2＝V0・T0/T1＝A2・V0 となり、かつ作動液３の吸入量Vc2は、 Vc2＝V0−V2＝（１−A2）V0 となる。When the container 1 that has sucked the working fluid in this way is put into the constant temperature bath 4 again, the remaining air is expanded and the expanded portion is exhausted. Thereafter, the container 1 is placed in the working fluid 3 in the above-mentioned case. When immersed similarly to, the air contracts and sucks the hydraulic fluid 3. Air remaining V2 in that case, V2 = V0 · T0 / T1 = A 2 · V0 becomes, and inhalation volume Vc2 of the hydraulic fluid 3 becomes Vc2 = V0-V2 = (1 -A 2) V0.
したがって上述したT0→T1→T0の昇温・冷却サイクルを
ｎ回行なった場合のｎ回目の作動液３の吸入量Vcnは、 Vcn＝（１−Ａｎ）V0 となり、それまでの吸入量の総和が容器１の内部の作動
液３の量となる。すなわち上記の方法では、第１温度T0
と第２温度T1との差および昇温・冷却サイクルの繰返し
回数ｎによって任意の量の作動液３を容器１内に注入す
ることができる。なお、第１温度T0と第２温度T1との差
が小さいほど１サイクル当りの吸入量が少なくなるか
ら、容器１内の作動液３の量が目標量に近付いた場合に
は、第１温度T0と第２温度T1との差を小さくして注入量
の微調整を行なうことが好ましい。Therefore, when the above-described temperature increasing / cooling cycle T0 → T1 → T0 is performed n times, the nth suction amount Vcn of the hydraulic fluid 3 becomes Vcn = (1−A n ) V0, The sum total is the amount of the hydraulic fluid 3 inside the container 1. That is, in the above method, the first temperature T0
Between the second temperature T1 and the second temperature T1 and the number of times n the temperature rising / cooling cycle is repeated, an arbitrary amount of the hydraulic fluid 3 can be injected into the container 1. Note that the smaller the difference between the first temperature T0 and the second temperature T1, the smaller the suction amount per cycle, so if the amount of the hydraulic fluid 3 in the container 1 approaches the target amount, the first temperature It is preferable that the difference between T0 and the second temperature T1 be reduced to finely adjust the injection amount.
上述のようにして作動液３の定量注入を行なった容器１
をヒートパイプとするには、内部の作動液３の一部を加
熱蒸発させることにより加熱追出し法によって内部の空
気を脱気し、しかる後ノズル２を封止（ピンチオフ）す
ればよい。Container 1 in which a fixed amount of hydraulic fluid 3 has been injected as described above
In order to use as a heat pipe, the inside air may be degassed by the heating-discharging method by heating and evaporating a part of the working fluid 3 inside, and then the nozzle 2 may be sealed (pinch off).
発明の効果 以上の説明から明らかなようにこの発明の方法によれ
ば、予め設定した第１温度と第２温度との間での容器の
昇温および浸漬冷却を繰返し行なうことにより、規定量
の作動液を正確に注入することができ、また容器内の温
度を下げて圧力を低くすることにより作動液を吸入する
のであるから、一度に多数の容器に作動液の注入を行な
うことができ、さらに小径の小型のヒートパイプにも有
効に適用することができる。EFFECTS OF THE INVENTION As is apparent from the above description, according to the method of the present invention, the temperature of the container is raised and the immersion cooling is repeated between the preset first temperature and the second temperature, so that the specified amount of The working fluid can be injected accurately, and since the working fluid is sucked by lowering the temperature and the pressure in the container, it is possible to inject the working fluid into many containers at once. Further, it can be effectively applied to a small heat pipe having a small diameter.
第１図はこの発明の方法を説明するための説明図であ
る。 １……容器、２……ノズル、３……作動液、４……恒温
槽、T0……第１温度、T1……第２温度。FIG. 1 is an explanatory diagram for explaining the method of the present invention. 1 ... Container, 2 ... Nozzle, 3 ... Working fluid, 4 ... Constant temperature bath, T0 ... First temperature, T1 ... Second temperature.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 益子 耕一 東京都江東区木場１丁目５番１号 藤倉電 線株式会社内 (72)発明者 伊藤 雅彦 東京都江東区木場１丁目５番１号 藤倉電 線株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Masuko 1-5-1, Kiba, Koto-ku, Tokyo Within Fujikura Electric Wire Co., Ltd. (72) Inventor Masahiko Ito 1-1-5, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd.
Claims (1)
器に蒸発および凝縮を行なって熱の輸送を行なう作動液
を注入するにあたり、 前記容器を凝固点以上の予め定めた第１温度に維持した
作動液中に開口端まで浸漬する操作と、前記第１温度よ
り高くかつ作動液の沸点以下の予め定めた第２温度にそ
の容器を維持する操作とを交互に行なって容器内に作動
液を吸入させることを特徴とするヒートパイプの作動液
注入方法。1. When injecting a working liquid for evaporating and condensing and transporting heat into a heat pipe container having one end opened, the container is maintained at a predetermined first temperature equal to or higher than a freezing point. The operation liquid is placed in the container by alternately performing the operation of immersing the container in the operating liquid up to the opening end and the operation of maintaining the container at a predetermined second temperature higher than the first temperature and not higher than the boiling point of the operation liquid. A method for injecting a working fluid into a heat pipe, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14634386A JPH0697150B2 (en) | 1986-06-23 | 1986-06-23 | How to inject the working fluid into the heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14634386A JPH0697150B2 (en) | 1986-06-23 | 1986-06-23 | How to inject the working fluid into the heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS633177A JPS633177A (en) | 1988-01-08 |
| JPH0697150B2 true JPH0697150B2 (en) | 1994-11-30 |
Family
ID=15405555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14634386A Expired - Lifetime JPH0697150B2 (en) | 1986-06-23 | 1986-06-23 | How to inject the working fluid into the heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0697150B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0887573A4 (en) * | 1996-12-13 | 2003-05-07 | Toyo Boseki | RESIN SHOCK |
-
1986
- 1986-06-23 JP JP14634386A patent/JPH0697150B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS633177A (en) | 1988-01-08 |
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