JPH0645174Y2

JPH0645174Y2 - heat pipe

Info

Publication number: JPH0645174Y2
Application number: JP1988084769U
Authority: JP
Inventors: 和夫多賀
Original assignee: 昭和アルミニウム株式会社
Priority date: 1988-06-27
Filing date: 1988-06-27
Publication date: 1994-11-16
Anticipated expiration: 2003-06-27
Also published as: JPH027484U

Description

【考案の詳細な説明】産業上の利用分野この考案は、水平に配置されて用いられるヒートパイプ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a heat pipe horizontally arranged and used.

従来の技術従来、水平に配置されて用いられるヒートパイプであっ
て、管体内面に凝縮部から蒸発部にかけて放射状の細溝
が設けられ、各細溝の深さが凝縮部側の端から蒸発部側
の端へ向かって次第に浅くなされているものが知られて
いる（特開昭55−160287号参照）。2. Description of the Related Art Conventionally, a heat pipe that is horizontally arranged and used, has radial narrow grooves provided on the inner surface of the tube from the condensation part to the evaporation part, and the depth of each narrow groove evaporates from the end on the condensation part side. It is known that the depth is gradually reduced toward the end on the part side (see JP-A-55-160287).

考案が解決しようとする課題上記ヒートパイプは、管体内面に凝縮部から蒸発部にか
けて放射状でかつ単に全長にわたって同じ深さの細溝が
設けられた水平配置のヒートパイプより作動流体の循環
効率がよい。しかしながら、溝底が凝縮部から蒸発部に
向かって下り勾配になっているのは、管体横断面におい
て直径の1/2の高さを越える部分の細溝に限られる。そ
して、各細溝は水平直線状であるから、液相作動流体加
熱箇所より上方の位置で終っている。したがって、作動
流体の循環効率はなお十分とはいえなかった。DISCLOSURE OF THE INVENTION Problem to be Solved by the Invention The heat pipe has a working fluid circulation efficiency higher than that of a horizontally arranged heat pipe in which narrow grooves having the same depth are provided radially from the condensation part to the evaporation part on the inner surface of the pipe and simply over the entire length. Good. However, the bottom of the groove has a downward slope from the condensing part to the evaporating part only in the narrow groove at the portion exceeding half the diameter in the cross section of the tubular body. Since each thin groove is horizontal and straight, it ends at a position above the liquid phase working fluid heating point. Therefore, the circulation efficiency of the working fluid was still insufficient.

この考案の目的は、水平配置でありながら作動流体の循
環効率のきわめてよ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 provide a heat pipe which is horizontally arranged and has an excellent circulation efficiency of a working fluid.

課題を解決するための手段この考案の水平に配置されて用いられるヒートパイプ
は、管体内面に凝縮部から蒸発部にかけて、互いに平行
な２本以上の突条からなる突条群が少なくとも１組設け
られ、突条群のうちの隣り合う突条の相互間隔が、両突
条間の作動流体を表面張力により常に保持しうるような
間隔とされており、１組の突条群は、凝縮部側の端から
蒸発部側の端へ向かって上部から次第に下部へねじれて
伸びているものである。Means for Solving the Problems The heat pipe horizontally arranged and used in the present invention has at least one ridge group consisting of two or more ridges parallel to each other from the condensation section to the evaporation section on the inner surface of the tube. The adjacent ridges of the ridge group are provided such that the mutual spacing between adjacent ridges is such that the working fluid between the ridges can always be held by surface tension. It gradually twists from the upper part to the lower part from the end on the part side to the end on the evaporation part side.

作用この考案の水平に配置されて用いられるヒートパイプ
は、管体内面に凝縮部から蒸発部にかけて、互いに平行
な２本以上の突条からなる突条群が少なくとも１組設け
られ、突条群のうちの隣り合う突条の相互間隔が、両突
条間の作動流体を表面張力により常に保持しうるような
間隔とされており、１組の突条群は、凝縮部側の端から
蒸発部側の端へ向かって上部から次第に下部へねじれて
伸びているから、主として凝縮部の上部で凝縮して液相
となった作動流体は、高低差のある突条間の溝を重力の
作用を受けながら、凝縮部の上部から蒸発部の下部へと
確実に流下する。Function The heat pipe horizontally arranged and used in the present invention is such that at least one ridge group composed of two or more ridges parallel to each other is provided on the inner surface of the tube from the condensation section to the evaporation section. The distance between the adjacent ridges is such that the working fluid between the two ridges can always be held by surface tension, and one ridge group evaporates from the end on the condensation section side. Since it gradually twists from the upper part to the lower part toward the end on the part side, the working fluid condensed into the liquid phase mainly in the upper part of the condensing part acts on the groove between the ridges with different heights by the action of gravity. While receiving, it surely flows down from the upper part of the condensing part to the lower part of the evaporating part.

実施例以下、この考案の１つの実施例を図面を参照しながら説
明する。Embodiment One embodiment of the present invention will be described below with reference to the drawings.

第１図に示すヒートパイプ（１）は、横断面円形の管体
（２）と、管体（２）の一端を閉鎖するエンドキャップ
（３）と、管体（２）の他端を閉鎖するノズル付きエン
ドキャップ（４）とからなるコンテナ（５）内に、作動
流体として純水（図示略）が封入されたものである。The heat pipe (1) shown in FIG. 1 has a tubular body (2) having a circular cross section, an end cap (3) closing one end of the tubular body (2), and the other end of the tubular body (2). A pure water (not shown) as a working fluid is enclosed in a container (5) consisting of an end cap (4) with a nozzle.

このヒートパイプ（１）は水平に配置され、エンドキャ
ップ（３）側が蒸発部（６）として、ノズル付きエンド
キャップ（４）側が凝縮部（７）として使用される。The heat pipe (1) is arranged horizontally, and the end cap (3) side is used as the evaporation section (6) and the end cap with nozzle (4) side is used as the condensation section (7).

管体（２）の内面には互いに90°の角度をなす４組の突
条群（８）が設けられいる。すなわち、第２図〜第４図
に示すように、１組の突条群（８）は、管体（２）の中
心に向かって突出しかつ高さが管体（２）内径の約６分
の１である内側突条（8a）と、内側突条（8a）に平行で
あって高さが管体（２）内径の４分の１である外側突条
（8c）と、これら両突条（8a）（8c）に平行であってこ
れらの中間位置よりやや外側突条（8c）寄り箇所にあり
高さが内側突条（8a）のそれに等しい中間突条（8b）と
からなっている。３種の突条（8a）（8b）（8c）は同じ
肉厚とされており、また隣り合う突条（8a）（8b）（8
c）の相互間隔は、各突条（8a）（8b）（8c）の間に入
り込んだ作動流体を表面張力により常に保持しうるよう
な間隔とされている。The inner surface of the tube (2) is provided with four groups of ridges (8) forming an angle of 90 ° with each other. That is, as shown in FIG. 2 to FIG. 4, one set of ridge group (8) projects toward the center of the tube (2) and has a height of about 6 minutes of the inner diameter of the tube (2). No. 1 of the inner ridge (8a), the outer ridge (8c) parallel to the inner ridge (8a) and the height is a quarter of the inner diameter of the tubular body (2), and both these ridges. Consisting of an intermediate ridge (8b) that is parallel to the ridges (8a) (8c) and slightly closer to the outer ridge (8c) than these intermediate positions, and has a height equal to that of the inner ridge (8a) There is. The three types of ridges (8a) (8b) (8c) have the same thickness, and adjacent ridges (8a) (8b) (8
The mutual spacing of c) is such that the working fluid entering between the ridges (8a) (8b) (8c) can always be held by the surface tension.

４組の突条群（８）は、所定の金型により得られた押出
管の両端を180°時計回りにねじることによりねじられ
た状態に形成されたものである。The four sets of ridge groups (8) are formed in a twisted state by twisting both ends of an extruded tube obtained by a predetermined mold clockwise by 180 °.

これら４組の突条群（８）を第２図〜第４図の互いに直
交しかつその交点が円中心を通る２本の鎖線によって４
つに区分し、各突条群（８）を時計回りにＡ〜Ｄに区別
する。４組の突条群（８）は上記のようにねじられてい
るので、第２図（管体（２）における蒸発部（６）側の
端寄り箇所の横断面を示す）において右下にあるＡの突
条群（８）は、第３図（管体（２）長さの真中部分の横
断面を示す）においては第２図の状態から90°だけ時計
回りした左下に位置し、第４図（管体（２）における凝
縮部（７）側の端寄り箇所の横断面を示す）においては
第３図の状態からさらに90°だけ時計回りした左上に位
置している。すなわち、Ａの突条群（８）は、その凝縮
部（７）側の端から蒸発部（６）側の端へ向かって上部
から次第に下部へねじれて伸びている。These four sets of ridge groups (8) are formed by two chain lines which are orthogonal to each other in FIGS. 2 to 4 and whose intersection points pass through the center of the circle.
And divide each ridge group (8) clockwise into A to D. Since the four sets of ridge groups (8) are twisted as described above, they are located at the lower right in Fig. 2 (showing a cross section of the end portion of the tube body (2) on the side of the evaporation portion (6)). The ridge group (8) of A is located in the lower left, which is clockwise by 90 ° from the state of FIG. 2 in FIG. 3 (showing the cross section of the middle part of the length of the tube (2)). In FIG. 4 (showing a cross section of the end portion of the tube (2) on the side of the condenser (7)), it is located at the upper left, which is further rotated clockwise by 90 ° from the state of FIG. That is, the ridge group (8) of A extends from the upper end to the lower end in a gradually twisted manner from the end on the condensation section (7) side toward the end on the evaporation section (6) side.

Ｂの突条群（８）もその凝縮部（７）側の端から蒸発部
（６）側の端へ向かって上部寄りの位置から次第に下部
寄りの位置へねじれて伸びている。The ridge group (8) of B also twists from the end on the condensation section (7) side to the end on the evaporation section (6) side and gradually twists from the upper position to the lower position.

作動流体として純水が封入されたこのヒートパイプ
（１）を作動させると、凝縮部（７）において凝縮しＡ
の突条群（８）の隣り合う突条（8a）（8b）（8c）間で
保持された作動流体は、第４図に示されているように、
管体（２）内の上部に位置しており、この作動流体が重
力により蒸発部（６）側へ移動し、第３図に示されてい
るような下部寄りの位置を経て、第２図に示されている
ような管体（２）内の下部まで還流するのである。凝縮
部（７）において凝縮しＢの突条群（８）の隣り合う突
条（8a）（8b）（8c）間で保持された作動流体も、凝縮
部（７）における上部寄りの位置から蒸発部（６）の下
部寄りの位置まで重力により還流する。When this heat pipe (1) filled with pure water as a working fluid is operated, it is condensed in the condensing part (7).
As shown in FIG. 4, the working fluid retained between the adjacent ridges (8a) (8b) (8c) of the ridge group (8) of
It is located in the upper part of the pipe body (2), and this working fluid moves to the evaporation part (6) side due to gravity, and passes through the position near the lower part as shown in FIG. Reflux to the lower part in the tube (2) as shown in FIG. The working fluid condensed in the condensing part (7) and held between the adjacent ridges (8a), (8b), (8c) of the B ridge group (8) also comes from the position near the upper part of the condensing part (7). It recirculates by gravity to a position near the bottom of the evaporator (6).

ＣおよびＤの突条群（８）は、ヒートパイプ（１）の水
平配置のさい、上記実施例の状態から90°または180°
向きを変えても上記実施例と同様の作用をするように、
設けられているものである。The group of ridges (8) of C and D is 90 ° or 180 ° from the state of the above embodiment when the heat pipe (1) is arranged horizontally.
Even if the direction is changed, the same operation as in the above embodiment is performed.
It is provided.

考案の効果この考案の水平に配置されて用いられるヒートパイプに
よれば、主として凝縮部の上部で凝縮した液相作動流体
は、高低差のある突条間の溝を重力の作用を受けなが
ら、凝縮部の上部から蒸発部の下部へと確実に流下する
から、作動流体の循環効率がきわめてよい。Effect of the Invention According to the heat pipe horizontally arranged and used in the present invention, the liquid-phase working fluid condensed mainly in the upper part of the condenser is subjected to the action of gravity in the groove between the ridges having the height difference, Since it surely flows from the upper part of the condensing part to the lower part of the evaporating part, the circulation efficiency of the working fluid is very good.

[Brief description of drawings]

図面はこの考案の１つの実施例を示し、第１図は正面
図、第２図は第１図のII−II線に沿う拡大断面図、第３
図は第１図のIII−III線に沿う拡大断面図、第４図は第
１図のIV−IV線に沿う拡大断面図である。（２）…管体、（６）…蒸発部、（７）…凝縮部、
（８）…突条群、（8a）（8b）（8c）…突条。The drawings show one embodiment of the present invention, FIG. 1 is a front view, FIG. 2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG.
The drawing is an enlarged sectional view taken along the line III-III in FIG. 1, and FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. (2) ... Tube, (6) ... Evaporating part, (7) ... Condensing part,
(8) ... ridge group, (8a) (8b) (8c) ... ridge.

Claims

[Scope of utility model registration request]

1. A heat pipe horizontally arranged and used, wherein two or more ridges (8a) parallel to each other are formed on the inner surface of the tubular body (2) from the condensation part (7) to the evaporation part (6).
At least one ridge group (8) composed of (8b) and (8c) is provided, and adjacent ridges (8a) (8) of the ridge group (8) are provided.
b) The distance between (8c) is such that the working fluid between the two ridges (8a), (8b) and (8c) can always be held by surface tension. ) Is a heat pipe which is twisted from the upper end toward the lower end toward the evaporation part (6) side end from the condensation part (7) side end.