JPH08110186A - Spiral pipe for cooling, its manufacture, and cooling device employing it - Google Patents
Spiral pipe for cooling, its manufacture, and cooling device employing itInfo
- Publication number
- JPH08110186A JPH08110186A JP24625794A JP24625794A JPH08110186A JP H08110186 A JPH08110186 A JP H08110186A JP 24625794 A JP24625794 A JP 24625794A JP 24625794 A JP24625794 A JP 24625794A JP H08110186 A JPH08110186 A JP H08110186A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- spiral
- cooling
- flat
- bending
- 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- Withdrawn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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0472—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
- F28D1/0473—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled the conduits having a non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、オイルや水等の流体
を冷却するための螺旋管とその製造方法、及びその螺旋
管を用いた冷却装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral tube for cooling a fluid such as oil or water, a method for manufacturing the spiral tube, and a cooling device using the spiral tube.
【０００２】[0002]
【従来の技術】自動車等の輸送機械や各種の産業機械に
は、オイルや水等の流体を冷却するための冷却装置が多
く装備されている。2. Description of the Related Art Many transport machines such as automobiles and various industrial machines are equipped with cooling devices for cooling fluids such as oil and water.
【０００３】この種の冷却装置は、熱媒体となる流体を
流通させるための曲線状又は螺旋状に屈曲させた冷却用
の通路を備え、その通路内部に流体を移動させること
で、放熱作用によって流体から熱を奪い、冷却するよう
になっている。This type of cooling device is provided with a curved or spirally bent cooling passage for circulating a fluid serving as a heat medium, and by moving the fluid inside the passage, a heat radiating action is provided. It takes heat from the fluid and cools it.
【０００４】上記の冷却装置においては、大きな放熱効
果を得る上で冷却通路の内部表面積が出来る限り大きい
ことが求められ、また、機械内部に組込むための全体が
コンパクトな形状におさまることが要求される。さら
に、自動車等の輸送機械では、冷却装置が出来るだけ軽
量であることが求められる。In the above cooling device, it is required that the internal surface area of the cooling passage is as large as possible in order to obtain a large heat radiation effect, and that the whole of the cooling passage to be incorporated into the machine should be compact in shape. It Further, in transportation machines such as automobiles, the cooling device is required to be as light as possible.
【０００５】このような要求に応える手段として、冷却
用通路を扁平な形状とし、かつその通路を出来るだけ小
さい径で螺旋状に巻き付ける方法があり、これにより、
通路の内部表面積を大きくし、全体形状をコンパクトに
形成することができる。As a means to meet such a demand, there is a method in which the cooling passage has a flat shape and the passage is spirally wound with a diameter as small as possible.
The internal surface area of the passage can be increased and the overall shape can be made compact.
【０００６】[0006]
【発明が解決しようとする課題】ところが、扁平にした
金属パイプ等の管部材は、その扁平にした方向の機械的
強度が増大するため、その管部材を小さな径で螺旋状に
巻き付けることは難しく、全体形状が大きくなりやすい
問題がある。However, since a flattened pipe member such as a metal pipe has an increased mechanical strength in the flattened direction, it is difficult to spirally wind the pipe member with a small diameter. However, there is a problem that the entire shape tends to be large.
【０００７】逆に、管部材を螺旋状に巻き付けた後、押
しつぶして扁平な形状にする方法もあるが、螺旋状に曲
げられた管部材の内周面には強い圧縮応力が作用してい
るため、管部材を強く押しつぶすと、内周面に異常変形
や割れ等が生じやすく、充分に薄い扁平な形状に成形で
きない不具合がある。On the contrary, there is also a method in which the pipe member is spirally wound and then crushed into a flat shape, but a strong compressive stress acts on the inner peripheral surface of the spirally bent pipe member. Therefore, when the pipe member is strongly crushed, abnormal deformation and cracks easily occur on the inner peripheral surface, and there is a problem that it cannot be formed into a sufficiently thin flat shape.
【０００８】一方、上記のような問題を解決するものと
して、特開平６−１５９８８８号公報には、図９に示す
ように直線管４１の外側に、螺旋状に変形させた２枚の
板材４２、４３を巻き付けて接合し、その板材４２、４
３の間に扁平な冷却用通路４４を形成したものが提案さ
れている。On the other hand, as a solution to the above problem, Japanese Patent Laid-Open No. 6-159888 discloses that two plate members 42, which are spirally deformed, are formed on the outside of the straight pipe 41 as shown in FIG. , 43 are wound and joined, and the plate members 42, 4
It is proposed that a flat cooling passage 44 is formed between the three.
【０００９】この提案の構造では、確かに扁平な冷却用
通路４４を小さな径の螺旋で積層させることができる利
点があるが、各板材４１、４２の端部は溶接等によって
接合させる必要があるため、製造に多くの手間とコスト
がかかる問題がある。The proposed structure has the advantage that the flat cooling passages 44 can be stacked with a spiral having a small diameter, but the ends of the plate members 41 and 42 must be joined by welding or the like. Therefore, there is a problem that manufacturing requires a lot of labor and cost.
【００１０】また、各板材４１、４２の端部全周を溶接
等によって液密に接合することは難しく、冷却用通路４
４内の流体が外部に漏れやすい欠点がある。Further, it is difficult to liquid-tightly join the entire circumferences of the end portions of the plate members 41 and 42 by welding or the like, and the cooling passage 4
There is a drawback that the fluid in 4 easily leaks to the outside.
【００１１】そこで、この発明は、上記の問題を解決
し、簡単な方法により扁平で螺旋状の冷却用通路を精度
よく形成できる冷却用螺旋管と、その製造方法を提供す
ることを目的としている。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems and provide a cooling spiral tube capable of accurately forming a flat spiral cooling passage by a simple method, and a manufacturing method thereof. .
【００１２】また、この発明の他の目的は、上記の螺旋
管を用いて高い放熱効果を発揮できる冷却装置を提供す
ることである。Another object of the present invention is to provide a cooling device which can exhibit a high heat radiation effect by using the above spiral tube.
【００１３】[0013]
【課題を解決するための手段】上記の課題を解決するた
め、この発明の冷却用螺旋管は、扁平なパイプを、その
扁平方向とは直交する軸を中心として螺旋状に巻き付
け、そのパイプの表面に、螺旋の中心軸から放射方向に
延びる複数の凹凸が形成されているものとしたのであ
る。In order to solve the above-mentioned problems, the cooling spiral tube of the present invention has a flat pipe spirally wound around an axis orthogonal to the flat direction of the flat pipe. A plurality of irregularities extending from the central axis of the spiral in the radial direction are formed on the surface.
【００１４】また、この発明の螺旋管の製造方法は、パ
イプの表面に長さ方向に沿って複数の凹凸を形成する凹
凸成形工程と、上記パイプを螺旋状に巻き付ける曲げ工
程と、上記パイプを螺旋が進む方向とは直交する方向に
扁平にしぼり込むつぶし工程とから成る方法を採用した
のである。Further, in the method for manufacturing a spiral pipe according to the present invention, a concavo-convex forming step of forming a plurality of concavities and convexities along the length direction on the surface of the pipe, a bending step of spirally winding the pipe, and the pipe The method comprises a squeezing step of flattening in a direction orthogonal to the direction in which the spiral advances.
【００１５】なお、上記の製造方法にあっては、凹凸成
形工程において、パイプの表面全周を一定のピッチで拡
径又は縮径させて凹凸を形成し、全体としてジャバラ管
状のパイプを成形したり、パイプの表面に不等ピッチで
凹凸を形成することができる。In the above-mentioned manufacturing method, in the concavo-convex forming step, the entire circumference of the surface of the pipe is expanded or reduced at a constant pitch to form concavities and convexities, and a bellows tubular pipe is molded as a whole. Alternatively, irregularities can be formed on the surface of the pipe at unequal pitches.
【００１６】一方、この発明の第１の冷却装置は、上記
の構造から成る冷却用螺旋管の両側の端部に、それぞれ
熱媒体の流出入口を形成し、上記螺旋管の内部に熱媒体
を流通させるようにしたのである。On the other hand, according to the first cooling device of the present invention, the heat medium inflow and outflow ports are respectively formed at both ends of the cooling spiral tube having the above structure, and the heat medium is provided inside the spiral tube. I decided to distribute it.
【００１７】また、第２の冷却装置は、上記構造の冷却
用螺旋管の内側に、直線管を挿通させ、その直線管とそ
れを取り巻く螺旋管の内周とを連通させ、上記直線管の
両側の端部にそれぞれ熱媒体の流出入口を形成したので
ある。In the second cooling device, a straight pipe is inserted inside the cooling spiral pipe having the above structure, and the straight pipe and the inner circumference of the spiral pipe surrounding the straight pipe are communicated with each other, and The inlet and outlet of the heat medium are formed at both ends.
【００１８】[0018]
【作用】上記の冷却用螺旋管及びその製造方法において
は、パイプの表面に複数の凹凸を設けることにより、パ
イプを変形させた際、その各凹凸部分が伸び縮みをし、
パイプ表面を柔軟に屈曲させる関節部として機能する。In the above-described cooling spiral tube and its manufacturing method, by providing a plurality of irregularities on the surface of the pipe, when the pipe is deformed, each irregularity part expands and contracts,
It functions as a joint that flexibly bends the pipe surface.
【００１９】このため、パイプを小さな力で薄い扁平な
形状につぶしたり、小さな径で螺旋状に巻き付かせるこ
とが可能となり、表面に割れ等がなくコンパクトな螺旋
管を形成することができる。Therefore, the pipe can be crushed into a thin flat shape with a small force, or can be spirally wound with a small diameter, and a compact spiral tube having no cracks on the surface can be formed.
【００２０】また、連続したパイプを螺旋状に巻き付け
るため、溶接等による接合部がなく、流体の漏れがない
冷却用通路を形成することができる。Further, since the continuous pipe is spirally wound, there is no joint by welding or the like, and a cooling passage without fluid leakage can be formed.
【００２１】一方、上記第１及び第２の冷却装置におい
ては、流体を流通させる螺旋管が扁平な形状をし、かつ
表面に複数の凹凸が形成されているため、冷却用通路の
内部表面積が著しく大きくなり、大きな放熱効果を発揮
することができる。On the other hand, in the first and second cooling devices described above, since the spiral tube through which the fluid flows has a flat shape and a plurality of irregularities are formed on the surface, the internal surface area of the cooling passage is small. It becomes remarkably large, and a large heat dissipation effect can be exhibited.
【００２２】[0022]
【実施例】以下、この発明の実施例を添付図面に基づい
て説明する。図１は実施例の冷却用螺旋管を示してい
る。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a cooling spiral tube of the embodiment.
【００２３】この螺旋管１は、扁平に成形されたパイプ
２を、その扁平方向とは直交する軸Ａを中心として螺旋
状に巻き付けてあり、そのパイプ２の一端に熱媒体であ
る流体の導入口３が、他端に流体の排出口４が形成され
ている。In this spiral tube 1, a flatly shaped pipe 2 is spirally wound around an axis A orthogonal to the flattening direction, and a fluid as a heat medium is introduced into one end of the pipe 2. A port 3 and a fluid discharge port 4 are formed at the other end.
【００２４】また、パイプ２の表面には、上記螺旋の中
心軸Ａから放射方向に延びる多数の凹凸５が形成されて
いる。その凹凸５は、扁平になったパイプ２の上下面
に、それぞれパイプ２の内径から外径側へ連続する形で
成形されており、隣接する各凹凸５のピッチは、内径側
が接近し、外径側が拡がるように形成されている。On the surface of the pipe 2, a large number of irregularities 5 extending in the radial direction from the central axis A of the spiral are formed. The concavities and convexities 5 are formed on the upper and lower surfaces of the flattened pipe 2 so as to be continuous from the inner diameter of the pipe 2 to the outer diameter side. It is formed so that the radial side expands.
【００２５】次に、上記の螺旋管１を製造する方法につ
いて説明する。Next, a method for manufacturing the above spiral tube 1 will be described.
【００２６】図２は、実施例の製造方法の全体の工程を
示し、この方法は、パイプ２の表面に複数の凹凸５を形
成する凹凸成形工程１１と、その成形したパイプ２を螺
旋状に巻き付ける曲げ工程１２と、上記パイプ２を扁平
にしぼり込むつぶし工程１３とから構成される。FIG. 2 shows the entire steps of the manufacturing method of the embodiment. In this method, the concavo-convex forming step 11 for forming a plurality of concavities and convexities 5 on the surface of the pipe 2 and the molded pipe 2 are spirally formed. It consists of a bending step 12 of winding and a crushing step 13 of flattening the pipe 2.
【００２７】上記凹凸成形工程１１の前工程には、図示
を省略したが、平板をロール曲げしてパイプ状に成形す
る加工や、その成形したパイプ状物の合わせ部を溶接し
て接合する造管工程を設け、造管されたパイプ２を連続
して成形工程１１に供給するようにする。Although not shown in the figure, a process for forming a pipe by rolling a flat plate, or a process for welding and joining the mating portions of the formed pipe-shaped product is omitted in the preceding step of the concavo-convex forming step 11. A pipe process is provided so that the pipe 2 produced can be continuously supplied to the forming process 11.
【００２８】上記凹凸成形工程１１では、図３に示すよ
うに、送りロール１４、１４の後方に互いに接近離反す
る対の金型１５、１５を配置し、その金型１５、１５を
パイプ２に圧着することにより、パイプ表面に凹凸５を
形成する。In the concavo-convex forming step 11, as shown in FIG. 3, a pair of metal molds 15 and 15 approaching and separating from each other are arranged behind the feed rolls 14 and 14, and the metal molds 15 and 15 are attached to the pipe 2. By pressure bonding, the unevenness 5 is formed on the pipe surface.
【００２９】上記各金型１５、１５の圧着面には、半円
形をした複数の突起１６と溝１７が交互に形成され、パ
イプ２の送りと同期させて各金型１５、１５をパイプに
圧着させることで、パイプ２の表面には一定のピッチで
環状の大径部６と小径部７が連続的に形成され、全体と
してジャバラ管状のパイプ２が成形されるようになって
いる。A plurality of semicircular projections 16 and grooves 17 are alternately formed on the crimping surface of each of the molds 15 and 15, and the molds 15 and 15 are attached to the pipe in synchronization with the feeding of the pipe 2. By crimping, an annular large-diameter portion 6 and a small-diameter portion 7 are continuously formed at a constant pitch on the surface of the pipe 2, and the bellows tubular pipe 2 is formed as a whole.
【００３０】一方、曲げ工程１２は、図４及び図６に示
すように、パイプ２を大きく直角方向に屈曲させる前曲
げ工程１２ａと、その屈曲したパイプ２をガイド軸１８
の回りに螺旋状に巻き付かせる螺旋曲げ工程１２ｂとか
ら成り、この２つの工程１２ａ、１２ｂを組合せること
により、パイプ２を所要の内径で小さく螺旋状に変形さ
せる。On the other hand, in the bending step 12, as shown in FIGS. 4 and 6, a pre-bending step 12a for bending the pipe 2 in a direction at a large angle and a guide shaft 18 for bending the bent pipe 2 are provided.
And a spiral bending step 12b in which the pipe 2 is spirally wound around, and the pipe 2 is deformed into a small spiral shape with a required inner diameter by combining these two steps 12a and 12b.
【００３１】なお、図４及び図６では、前曲げ工程１２
ａに２つの駆動ロール１９と１つの案内ロール２０を、
また、螺旋曲げ工程１２ｂに３つの駆動ロール２０と１
つの案内害と２１を配置したが、これに限定されず、パ
イプ２の直径や螺旋の径に応じてロールやガイドの数や
配置を任意に選択することができる。In FIGS. 4 and 6, the pre-bending step 12 is performed.
Two drive rolls 19 and one guide roll 20 are attached to a.
Also, in the spiral bending step 12b, three drive rolls 20 and 1 are used.
Although two guide damages and 21 are arranged, the number and arrangement of rolls and guides can be arbitrarily selected according to the diameter of the pipe 2 or the diameter of the spiral.
【００３２】この曲げ工程１２においては、凹凸成形工
程１１でパイプ２表面に多数の大径部６と小径部７が交
互に形成されているため、各駆動ロール１９、２１やガ
イド２２でパイプ２に曲げ力を加えた場合、凹凸５の各
小径部７が螺旋の内径側で縮み、外径側で拡がって、パ
イプ２を柔軟に屈曲させる。すなわち、各小径部７がパ
イプの圧縮と膨張を吸収するため、パイプ２は各凹凸５
が関節部となってスムーズに屈曲する。このため、凹凸
が成形された上記パイプ２は、小さな力で任意の形状に
変形させることができ、凹凸を持たない通常の丸形パイ
プに比べて、小さな曲率の螺旋形に巻き付けることがで
きる。In this bending step 12, since a large number of large-diameter portions 6 and small-diameter portions 7 are alternately formed on the surface of the pipe 2 in the concavo-convex forming step 11, the pipe 2 is formed by the drive rolls 19 and 21 and the guide 22. When a bending force is applied to, the small-diameter portions 7 of the unevenness 5 contract on the inner diameter side of the spiral and expand on the outer diameter side to flex the pipe 2 flexibly. That is, since each small-diameter portion 7 absorbs the compression and expansion of the pipe, the pipe 2 has each unevenness 5
Becomes a joint and bends smoothly. Therefore, the pipe 2 having the unevenness can be deformed into an arbitrary shape with a small force, and can be wound into a spiral shape having a smaller curvature than an ordinary round pipe having no unevenness.
【００３３】上記つぶし工程１３は、図２及び図５に示
すように、曲げ工程１２における前曲げ工程１２ａと螺
旋曲げ工程１２ｂの間に配置されており、接近離反する
対の金型２２、２３をパイプ２に圧着することにより、
パイプ２を扁平にしぼり加工する。As shown in FIGS. 2 and 5, the crushing step 13 is arranged between the pre-bending step 12a and the spiral bending step 12b in the bending step 12, and the pair of molds 22 and 23 approaching and separating from each other. By crimping to the pipe 2,
The pipe 2 is flattened and pressed.
【００３４】このつぶし工程１３においては、パイプ２
の表面が凹凸５を持っているため、金型２２、２３でパ
イプ２を押しつぶした場合、各凹凸５の小径部７が拡径
してパイプ表面の無理な変形を吸収することになり、全
体としてパイプ２のスムーズな変形を可能にする。この
ため、パイプ２の表面に割れや異常な変形を生じさせる
ことなく、パイプ２を薄い扁平な形状に変形させること
ができる。In this crushing step 13, the pipe 2
When the pipe 2 is crushed by the molds 22 and 23, the small diameter portion 7 of each unevenness 5 expands and absorbs the excessive deformation of the pipe surface. As a result, the pipe 2 can be smoothly deformed. Therefore, the pipe 2 can be deformed into a thin flat shape without causing cracks or abnormal deformation on the surface of the pipe 2.
【００３５】なお、上記のつぶし工程１３は、曲げ工程
１２の途中ではなく、前曲げ工程１２ａの前側、又は螺
旋曲げ工程１２ｂの後側に配置するようにしてもよい。The crushing step 13 may be arranged not in the middle of the bending step 12 but on the front side of the front bending step 12a or the rear side of the spiral bending step 12b.
【００３６】上記のような方法で形成される螺旋管１
（図１参照）は、パイプ２の内部に形成される冷却用通
路８が扁平で螺旋状に巻き付けられ、かつ表面全体に多
数の凹凸５が形成されているため、冷却用通路８の表面
積は、丸パイプを螺旋状に巻き付けた従来の螺旋管や、
特開平６−１５９８８８号公報で提案された螺旋管に比
べて著しく大きくなる。このため、熱媒体であるオイル
や水等の流体を導入口３から冷却用通路８に導入し、そ
の通路８内部を流通させた場合、大きな放熱作用が得ら
れ、効率のよい冷却を行なうことができる。The spiral tube 1 formed by the above method
In (see FIG. 1), since the cooling passage 8 formed inside the pipe 2 is flat and spirally wound and a large number of irregularities 5 are formed on the entire surface, the surface area of the cooling passage 8 is , A conventional spiral tube in which a round pipe is wound spirally,
The size is significantly larger than that of the spiral tube proposed in JP-A-6-159888. Therefore, when a fluid such as oil or water, which is a heat medium, is introduced from the inlet 3 into the cooling passage 8 and circulated in the passage 8, a large heat radiation effect is obtained and efficient cooling is performed. You can
【００３７】また、パイプ２は、丸形のパイプから連続
的に成形され、周面に溶接部などの接合部分を持たない
ため、冷却用通路８から流体が漏れ出すことがない。Further, since the pipe 2 is continuously formed from a round pipe and has no joint portion such as a welded portion on the peripheral surface, the fluid does not leak from the cooling passage 8.
【００３８】図７はパイプ表面に形成する凹凸の他の実
施例を示しており、図７（ａ）のものは、パイプ２表面
に不等ピッチで凹凸５を形成したものである。また、図
７（ｂ）のものは、パイプ２表面に螺旋状の突起９を形
成し、全体を凹凸形状としたものである。FIG. 7 shows another embodiment of the unevenness formed on the surface of the pipe. In FIG. 7A, the unevenness 5 is formed on the surface of the pipe 2 at an unequal pitch. Further, in FIG. 7 (b), a spiral projection 9 is formed on the surface of the pipe 2 so that the entire surface has an uneven shape.
【００３９】このように、凹凸を不等ピッチとしたり、
螺旋形としても、各凹凸の大径部と小径部がパイプ表面
の圧縮と膨張を吸収するため、スムーズで無理のないパ
イプの屈曲を行なうことができる。In this way, the unevenness has an uneven pitch,
Even in the spiral shape, since the large diameter portion and the small diameter portion of each unevenness absorb the compression and expansion of the pipe surface, the pipe can be bent smoothly and comfortably.
【００４０】一方、図８は、実施例の冷却装置を示して
いる。この装置は、前述の方法で形成された螺旋管１の
内側に直線管３１を挿入し、その直線管３１と螺旋管１
の内周面に開口３２を設け、両者の内部を連通させてい
る。On the other hand, FIG. 8 shows a cooling device of the embodiment. In this device, a straight tube 31 is inserted inside the spiral tube 1 formed by the above-described method, and the straight tube 31 and the spiral tube 1 are inserted.
An opening 32 is provided on the inner peripheral surface of the so as to communicate the insides of both.
【００４１】また、直線管３１の両端部にそれぞれ流体
の導入口３３と排出口３４を設け、流体を直線管３１と
螺旋管１の内部に環流させるようになっている。Further, a fluid inlet 33 and a fluid outlet 34 are provided at both ends of the straight tube 31 so that the fluid is circulated into the straight tube 31 and the spiral tube 1.
【００４２】[0042]
【効果】以上のように、この発明は、パイプ表面に複数
の凹凸を設け、その凹凸で変形を吸収してパイプをスム
ーズに変形させるので、扁平でかつ小さな曲率で巻かれ
た冷却用螺旋管を精度よく形成することができる。As described above, according to the present invention, a plurality of irregularities are provided on the surface of the pipe, and the irregularities absorb the deformation to smoothly deform the pipe, so that the cooling spiral tube is flat and wound with a small curvature. Can be accurately formed.
【００４３】また、パイプ表面に設けた凹凸によりパイ
プの表面積が大きくなり、パイプ自体に溶接等の接合部
分がないため、冷却用通路の内部表面積を著しく大きく
でき、通路からの流体の漏れ出しも完全に防止できる。Further, the surface area of the pipe is increased due to the unevenness provided on the surface of the pipe, and since the pipe itself has no joint portion such as welding, the internal surface area of the cooling passage can be remarkably increased, and leakage of fluid from the passage is also prevented. Can be completely prevented.
【００４４】したがって、この発明の螺旋管を用いれ
ば、コンパクトで放熱効果の大きい冷却用通路を形成で
き、極めて効率のよい冷却を行なうことができる。Therefore, by using the spiral tube of the present invention, it is possible to form a compact cooling passage having a large heat dissipation effect, and it is possible to perform extremely efficient cooling.
【図１】実施例の冷却用螺旋管を示す斜視図FIG. 1 is a perspective view showing a cooling spiral tube according to an embodiment.
【図２】実施例の製造方法の全体工程を示す図FIG. 2 is a diagram showing an overall process of a manufacturing method according to an embodiment.
【図３】同上の凹凸成形工程を示す斜視図FIG. 3 is a perspective view showing a concavo-convex forming process of the same.
【図４】前曲げ工程を示す斜視図FIG. 4 is a perspective view showing a front bending step.
【図５】つぶし工程を示す斜視図FIG. 5 is a perspective view showing a crushing process.
【図６】螺旋曲げ工程を示す斜視図FIG. 6 is a perspective view showing a spiral bending process.
【図７】（ａ）（ｂ）はそれぞれ他の凹凸成形例を示す
図7 (a) and 7 (b) are views showing other examples of concavo-convex molding.
【図８】冷却装置の他の実施例を示す断面図FIG. 8 is a sectional view showing another embodiment of the cooling device.
【図９】従来例を示す断面図FIG. 9 is a sectional view showing a conventional example.
１ 螺旋管 ２ パイプ ３ 導入口 ４ 排出口 ５ 凹凸 ６ 大径部 ７ 小径部 ８ 冷却用通路 ９ 突起 １１ 凹凸成形工程 １２ 曲げ工程 １３ つぶし工程 1 spiral pipe 2 pipe 3 inlet 4 discharge 5 unevenness 6 large diameter part 7 small diameter part 8 cooling passage 9 protrusion 11 unevenness forming process 12 bending process 13 crushing process
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｄ 31/00 2126−4Ｆ Ｆ２８Ｄ 1/047 Ａ Ｆ２８Ｆ 1/08 Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location B29D 31/00 2126-4F F28D 1/047 A F28F 1/08
Claims (6)
する軸を中心として螺旋状に巻き付け、そのパイプの表
面には、螺旋の中心軸から放射方向に延びる複数の凹凸
が形成されていることを特徴とする冷却用螺旋管。1. A flat pipe is spirally wound around an axis orthogonal to the flat direction, and a plurality of irregularities extending from the central axis of the spiral in a radial direction are formed on the surface of the pipe. A spiral tube for cooling, which is characterized in that
凹凸を形成する凹凸成形工程と、上記パイプを螺旋状に
巻き付ける曲げ工程と、上記パイプを螺旋が進む方向と
は直交する方向に扁平にしぼり込むつぶし工程とから成
ることを特徴とする冷却用螺旋管の製造方法。2. A concavo-convex forming step of forming a plurality of concavities and convexities along a length direction on a surface of the pipe, a bending step of winding the pipe in a spiral shape, and a direction orthogonal to a spiral traveling direction of the pipe. A method of manufacturing a spiral spiral tube for cooling, comprising a flattening step.
面全周を一定のピッチで拡径又は縮径させて凹凸を形成
し、全体としてジャバラ管状のパイプを成形することを
特徴とする請求項２に記載の冷却用螺旋管の製造方法。3. The concavo-convex forming step, wherein the entire circumference of the surface of the pipe is enlarged or reduced at a constant pitch to form concavities and convexities, and a bellows tubular pipe as a whole is molded. A method for manufacturing the spiral spiral tube for cooling according to.
面に不等ピッチで凹凸を形成することを特徴とする請求
項２に記載の冷却用螺旋管の製造方法。4. The method for manufacturing a spiral tube for cooling according to claim 2, wherein in the unevenness forming step, unevenness is formed on the surface of the pipe at unequal pitches.
端部に、それぞれ熱媒体の流出入口を形成し、上記螺旋
管の内部に熱媒体を流通させるようにしたことを特徴と
する冷却装置。5. The cooling medium pipe according to claim 1, characterized in that heat medium outlets and inlets are formed at both ends of the cooling spiral pipe so that the heat medium can be circulated inside the spiral pipe. Cooling system.
に、直線管を挿通させ、その直線管とそれを取り巻く螺
旋管の内周とを連通させ、上記直線管の両側の端部にそ
れぞれ熱媒体の流出入口を形成したことを特徴とする冷
却装置。6. A straight pipe is inserted into the cooling spiral pipe according to claim 1, and the straight pipe and the inner circumference of the spiral pipe surrounding the straight pipe are communicated with each other, and both ends of the straight pipe are connected. The cooling device is characterized in that the heat medium inflow and outflow ports are formed in the respective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24625794A JPH08110186A (en) | 1994-10-12 | 1994-10-12 | Spiral pipe for cooling, its manufacture, and cooling device employing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24625794A JPH08110186A (en) | 1994-10-12 | 1994-10-12 | Spiral pipe for cooling, its manufacture, and cooling device employing it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08110186A true JPH08110186A (en) | 1996-04-30 |
Family
ID=17145836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24625794A Withdrawn JPH08110186A (en) | 1994-10-12 | 1994-10-12 | Spiral pipe for cooling, its manufacture, and cooling device employing it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08110186A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1195572A2 (en) * | 2000-10-06 | 2002-04-10 | Cohnen Beteiligungs-GmbH & Co. KG | Cooler, more particularly for automotive vehicle |
| WO2007096013A1 (en) * | 2006-02-21 | 2007-08-30 | Siemens Ag Österreich | Heat sink comprising a tube through which cooling medium flows |
| CN102397927A (en) * | 2011-10-31 | 2012-04-04 | 浙江摩多巴克斯汽配有限公司 | Elbow pipe device of EGR (exhaust gas recirculation) pipe fitting and forming technique thereof |
| CN111272530A (en) * | 2018-12-05 | 2020-06-12 | 中广核工程有限公司 | Manufacturing method of coil pipe of nuclear power high-temperature sampling cooler |
| CN112045006A (en) * | 2020-07-10 | 2020-12-08 | 张家港市昆仑管业有限公司 | Bending method of reverse-rotation spiral pipe |
-
1994
- 1994-10-12 JP JP24625794A patent/JPH08110186A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1195572A2 (en) * | 2000-10-06 | 2002-04-10 | Cohnen Beteiligungs-GmbH & Co. KG | Cooler, more particularly for automotive vehicle |
| EP1195572A3 (en) * | 2000-10-06 | 2002-10-16 | Cohnen Beteiligungs-GmbH & Co. KG | Cooler, more particularly for automotive vehicle |
| WO2007096013A1 (en) * | 2006-02-21 | 2007-08-30 | Siemens Ag Österreich | Heat sink comprising a tube through which cooling medium flows |
| CN102397927A (en) * | 2011-10-31 | 2012-04-04 | 浙江摩多巴克斯汽配有限公司 | Elbow pipe device of EGR (exhaust gas recirculation) pipe fitting and forming technique thereof |
| CN111272530A (en) * | 2018-12-05 | 2020-06-12 | 中广核工程有限公司 | Manufacturing method of coil pipe of nuclear power high-temperature sampling cooler |
| CN111272530B (en) * | 2018-12-05 | 2023-04-18 | 中广核工程有限公司 | Manufacturing method of coil pipe of nuclear power high-temperature sampling cooler |
| CN112045006A (en) * | 2020-07-10 | 2020-12-08 | 张家港市昆仑管业有限公司 | Bending method of reverse-rotation spiral pipe |
| CN112045006B (en) * | 2020-07-10 | 2022-02-15 | 张家港市昆仑管业有限公司 | Bending method of reverse-rotation spiral pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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