JPH03194298A - Vacuum double-pipe - Google Patents
Vacuum double-pipeInfo
- Publication number
- JPH03194298A JPH03194298A JP1333744A JP33374489A JPH03194298A JP H03194298 A JPH03194298 A JP H03194298A JP 1333744 A JP1333744 A JP 1333744A JP 33374489 A JP33374489 A JP 33374489A JP H03194298 A JPH03194298 A JP H03194298A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- vacuum double
- heat
- inner tube
- 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.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000005452 bending Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 8
- 230000002528 anti-freeze Effects 0.000 description 4
- 210000002268 wool Anatomy 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、真空二重構造の管に関する。[Detailed description of the invention] (Industrial application field) TECHNICAL FIELD The present invention relates to vacuum double-walled tubes.
（従来の技術）
従来、真空二重管として、内管と、これに外装した外管
とを備え、外管の両端部に設けたフランジで内管との間
を密閉し、内管と外管との間に真空空間を形成したもの
が、実開昭５９−１５１９７１号公報で提案されている
。(Prior art) Conventionally, vacuum double tubes have been equipped with an inner tube and an outer tube sheathed to the inner tube, and flanges provided at both ends of the outer tube seal the space between the inner tube and the outer tube. A device in which a vacuum space is formed between the tube and the tube is proposed in Japanese Utility Model Application Laid-open No. 59-151971.
この真空二重管を用いた配管では、前記真空空間によっ
て断熱性が保たれているので、内管を流れる流体の熱損
失が極めて少ないという利点を有する。Piping using this vacuum double tube has the advantage that the heat loss of the fluid flowing through the inner tube is extremely small because the vacuum space maintains heat insulation.
ところで、前記真空二重管では、内管と外管が共に直管
で構成されているので、例えば寒冷地などにおいて、地
中の水道管に下端を接続した真空二重管を地表に立ち上
げ、その上端から屋内に配管する場合、真空二重管の上
端に曲げ継手を接続し、この曲げ継手から水平方向に配
管しなければならない。By the way, in the vacuum double pipe, both the inner pipe and the outer pipe are made up of straight pipes, so in cold regions, for example, a vacuum double pipe with its lower end connected to an underground water pipe is installed on the surface. When piping is installed indoors from its upper end, a bent joint must be connected to the upper end of the vacuum double pipe, and the piping must be run horizontally from this bent joint.
しかし、曲げ継手として、一般に使用されているエルボ
を使用すると、その部分での熱損失を防止するために断
熱材で保護する必要がある。また、完全な断熱処理を施
すことは至難の業である。However, when a commonly used elbow is used as a bending joint, it is necessary to protect it with insulation to prevent heat loss at that part. Furthermore, it is extremely difficult to perform complete heat insulation treatment.
そこで、従来、本出願人により、曲げ継手として、内管
と外管をフレキシブルチューブで構成し、これら内管と
外管との間に真空空間を形成したものが、特開平０１−
２１４６２６号公報で提案されている。Therefore, the present applicant has conventionally proposed a bending joint in which an inner tube and an outer tube are made of flexible tubes, and a vacuum space is formed between the inner tube and the outer tube.
This method is proposed in Japanese Patent No. 214626.
（発明が解決しようとする課題）
しかしながら、前記直管よりなる真空二重管にフレキシ
ブルチューブよりなる真空二重曲げ継手を接続した場合
、両者の内管接続部外周を断熱処理しなければならず、
この断熱処理が不完全ならば真空二重管を使用すること
が無意味になる。(Problem to be Solved by the Invention) However, when a vacuum double bending joint made of a flexible tube is connected to the vacuum double pipe made of a straight pipe, the outer periphery of the inner pipe connecting portion of both must be insulated. ,
If this insulation treatment is incomplete, the use of vacuum double tubes becomes meaningless.
ところか、前述したように、断熱処理に完全を期するこ
とは容易ではない。また、完全な断熱処理を行うものと
すれば、大幅な工事費のコストアップを招来する。However, as mentioned above, it is not easy to ensure perfect heat insulation treatment. Furthermore, if complete insulation treatment were to be performed, construction costs would increase significantly.
（課題を解決するための手段）
そこで、本発明は、前記問題点を解決するためになされ
たもので、内管、外管の少なくとも一箇所にそれぞれ膨
出部を連設した可撓管部を対向するように設け、前記内
管の少なくとも可撓管部外周に耐熱性を有し、柔軟性を
有する断熱スペーサを設けたものである。(Means for Solving the Problems) Therefore, the present invention has been made to solve the above-mentioned problems. are provided so as to face each other, and a heat-resistant and flexible heat-insulating spacer is provided on at least the outer periphery of the flexible tube portion of the inner tube.
（作用）
前記構成によれば、真空二重管は内管と外管の対応する
可撓管部で同時に任意の角度に折り曲げることができる
。そして、このときスペーサによって内管と外管との直
接接触が防止される。したがって、内管の中を送られる
流体の熱損失が極めて少な（なる。(Function) According to the above configuration, the vacuum double tube can be simultaneously bent at any angle at the corresponding flexible tube portions of the inner tube and the outer tube. At this time, the spacer prevents direct contact between the inner tube and the outer tube. Therefore, the heat loss of the fluid sent through the inner tube is extremely small.
（実施例）
以下、第１図を参照して前記真空二重管について説明す
る。(Example) Hereinafter, the vacuum double tube will be explained with reference to FIG.
真空二重管１は、概略、内管ＩＯ１外管２０、及び外管
２０の両端で前記二つの管１．０．２０をそれぞれ連結
するフランジ３０．３０で構成されている。The vacuum double tube 1 is generally composed of an inner tube IO1, an outer tube 20, and flanges 30.30 connecting the two tubes 1.0.20 at both ends of the outer tube 20, respectively.
内管１０は長さ数メートルのステンレスからなる直管で
、その一部がフレキシブル構造１１としてあり、該フレ
キシブル構造１１の外周がスペーサ１３で覆われている
。The inner tube 10 is a straight tube made of stainless steel and has a length of several meters, a part of which has a flexible structure 11, and the outer periphery of the flexible structure 11 is covered with a spacer 13.
フレキシブル構造１１はリング状又はスパイラル状に膨
出部１２を連設したもので、従来周知のフレキシブルチ
ューブの製造方法により形成される。The flexible structure 11 has bulges 12 arranged in a ring or spiral shape, and is formed by a conventionally known flexible tube manufacturing method.
スペーサ１３は有機質を含まないグラスウールからなり
、両端が内管１０の直管部で針金等の固一
定具１４により固定されている。なお、スペーサ１３に
は、その他、セラミックウール、ワイヤを編成したブレ
ードなども使用可能である。また、スペーサ１３は、幅
広の前記ウール等を内管１０の外周にロール状に巻いた
ものものでもよいし、前記ウール等を幅数センチメート
ルに形成した帯状物又は紐状物をスパイラル状に巻いて
構成したものでもよいし、ウール等を筒状に形成し、こ
れを外装したものでもよい。The spacer 13 is made of glass wool that does not contain organic substances, and both ends are fixed to the straight pipe portion of the inner tube 10 by fixed fixtures 14 such as wires. In addition, for the spacer 13, ceramic wool, a braid made of wire, etc. can also be used. Further, the spacer 13 may be one in which the wide wool or the like is wound around the outer circumference of the inner tube 10 in a roll shape, or a strip or string-like material formed from the wool or the like several centimeters wide in a spiral shape. It may be constructed by rolling it, or it may be formed from wool or the like into a cylindrical shape and wrapped around it.
外管２０は内管１０よりも数十センチメートル短い直管
で、内管同様にその一部が膨出部２２を連設してフレキ
シブル構造２Ｉとしである。外管２０のフレキシブル構
造２１は、外管２０を内管１０に外装して外管２０の両
端にほぼ等しく内管２０を突出さぜた状態で、内管１０
のフレキシブル構造１１が対句する位置に設けである。The outer tube 20 is a straight tube several tens of centimeters shorter than the inner tube 10, and like the inner tube, a part thereof has a bulge 22 connected thereto to form a flexible structure 2I. The flexible structure 21 of the outer tube 20 is configured such that the outer tube 20 is sheathed onto the inner tube 10 and the inner tube 20 protrudes approximately equally from both ends of the outer tube 20.
The flexible structure 11 is provided at the opposite position.
また、外管２０の一端側には内外を連絡する銅製のチッ
プ管２３が取り付けである。なお、図上チップ管２３の
端部は閉塞しであるが、真空二重管１の組み立て前は開
放状態になっている。Further, a copper tip tube 23 is attached to one end of the outer tube 20 to connect the inside and outside. Although the end of the tip tube 23 is closed in the figure, it is in an open state before the vacuum double tube 1 is assembled.
フランジ３０は円盤状に形成した板材３１の内縁部と外
縁部に所定長さの筒体３２．３３を同方向に突設したも
ので、内側の筒体（以下「内筒Ｊという。）３２の内径
は内管１０の直管部外径に等しく、外側の筒体（以下「
外筒Ｊという。）３３の外径は外管２０の直管部内径に
等しくしである。また、溶接作業を考慮して、内筒３２
を外筒３３より長くしである。The flange 30 is a disc-shaped plate material 31 with cylinders 32 and 33 of a predetermined length protruding from the inner and outer edges in the same direction. The inner diameter of the straight pipe part of the inner pipe 10 is equal to the outer diameter of the straight pipe part of the inner pipe 10, and the outer diameter of the outer cylinder (hereinafter "
It is called outer cylinder J. ) 33 is equal to the inner diameter of the straight pipe portion of the outer tube 20. In addition, in consideration of welding work, the inner cylinder 32
is longer than the outer cylinder 33.
以上の構成からなる真空二重管１は、次のようにして組
み立てられる。The vacuum double tube 1 having the above configuration is assembled in the following manner.
まず、例えば外管２０に内管１０を内装し、内管１０の
両端が外管２０の両端より一定の長さだけ突出するよう
に治具等で位置決めする。First, for example, the inner tube 10 is placed inside the outer tube 20 and positioned using a jig or the like so that both ends of the inner tube 10 protrude from both ends of the outer tube 20 by a certain length.
次に、フランジ３０（３０ａ）を内管１０の一端から装
着し、外管２０の端部にフランジ３０（３０ａ）の外筒
３３が重合する位置まで挿入する。Next, the flange 30 (30a) is attached from one end of the inner tube 10, and inserted into the end of the outer tube 20 to a position where the outer cylinder 33 of the flange 30 (30a) overlaps.
反対側についても同様にフランジ３０ （３０ｂ）を装
着する。Attach the flange 30 (30b) to the opposite side in the same manner.
そして、外管２０端部とフランジ３０ （３０ａ）の外
筒３３端部とを全周溶接し、続いて、内管１Ｏとフラン
ジ３０ （３０ａ）の内筒３２との接触部を全周溶接す
る。反対側についても同様である。Then, the end of the outer tube 20 and the end of the outer tube 33 of the flange 30 (30a) are welded all around, and then the contact part between the inner tube 1O and the inner tube 32 of the flange 30 (30a) is welded all the way around. do. The same goes for the opposite side.
続いて、以上のようにして組み立てた内管１０と外管２
０を高温炉（図示せず）の中で加熱し、内管１０と外管
２０の間に形成される空間Ｓの空気をチップ管２３を介
して排出し、チップ管２３の先端を潰し、前記空間Ｓを
真空空間Ｓｖとする。Next, the inner tube 10 and outer tube 2 assembled as described above are assembled.
0 in a high temperature furnace (not shown), the air in the space S formed between the inner tube 10 and the outer tube 20 is discharged through the tip tube 23, and the tip of the tip tube 23 is crushed. The space S is assumed to be a vacuum space Sv.
また、チップ管２３の周囲をカバー２４で覆い、その中
にシール剤２５を充填して保護する。Further, the tip tube 23 is surrounded by a cover 24, and a sealant 25 is filled therein for protection.
なお、高温炉の中は数百度と高温であるか、スペーサ１
３には耐熱性の材料が使用されているので、その性状が
変わることはない。Note that the temperature inside the high-temperature furnace is several hundred degrees, or the spacer 1
3 is made of heat-resistant material, so its properties will not change.
以」二のようにして製造された真空二重管１を用いた水
道配管の凍結防止設備を、第２図を参照して説明する。An antifreeze system for water pipes using the vacuum double pipe 1 manufactured as described above will be explained with reference to FIG. 2.
凍結防止設備１００において、地中１０１に埋設された
水道管１０２の一端には水抜きバルブ１０３が接続され
ており、家屋の屋内１０４に設けたコック１０５により
前記水抜きバルブ１．０３の開閉操作ができるようにし
である。また、水抜き７
り１０５を閉め、水抜バルブ１０３から真空二重管１、
連結管１．０６の水を地中に放出する。In the antifreeze equipment 100, a drain valve 103 is connected to one end of a water pipe 102 buried underground 101, and the drain valve 1.03 is opened and closed by a cock 105 installed indoors 104 of the house. This is so that it can be done. Also, close the water drain valve 105, and connect the vacuum double pipe 1 and the water drain valve 103 to
Water from connecting pipe 1.06 is discharged into the ground.
以」二の水抜操作を忘れることがあっても、蛇口１０７
に至るまでの内管１０はその外周の真空空間Ｓｖで断熱
保護されているため凍結することはない。Even if you forget to drain water from the faucet 107
Since the inner tube 10 up to the inner tube 10 is thermally protected by the vacuum space Sv around its outer periphery, it will not freeze.
したがって、水抜きバルブ１０３、連結管１０６を設け
ることなく、水道管＋０２を直接真空二重管１に接続す
ることも可能である。Therefore, it is also possible to directly connect the water pipe +02 to the vacuum double pipe 1 without providing the drain valve 103 and the connecting pipe 106.
また、例えば真空二重管１をフレキシブル構造１１．２
１の部分で折り曲げても、内管１０のフレキシブル構造
１１はスペーサ１３で保護されているので、内管１０と
外管２０とが直接接触することがなく、フレキシブル構
造部分からの熱損失が防止される。In addition, for example, the vacuum double tube 1 can be made into a flexible structure 11.2.
Even if it is bent at part 1, the flexible structure 11 of the inner tube 10 is protected by the spacer 13, so the inner tube 10 and the outer tube 20 do not come into direct contact, preventing heat loss from the flexible structure. be done.
前記実施例では、真空二重管１では、内管１． Ｏ５外
管２０にそれぞれ一箇所の対応するフレキシブル構造Ｉ
Ｌ２］を設けるものとしたが、内管１０及び外管２０に
それぞれ複数のフレキシブル構造を対応位置に設け、複
数の箇所で折り曲げるこバルブ１０３は、地中の連結管
１０６を介して下部を地中に埋設した真空二重管１の内
管１０に接続されている。地中１０１から立ち−Ｌがっ
た真空二重管１は、内管１０と外管２０のフランジ構造
１１、．２１の部分で水平に曲げられ、上端部が屋内１
０４に引き込まれて蛇口１０７に接続される。In the embodiment described above, in the vacuum double tube 1, the inner tube 1. One flexible structure I corresponding to each O5 outer tube 20
L2], but the inner pipe 10 and the outer pipe 20 are each provided with a plurality of flexible structures at corresponding positions, and the valve 103 is bent at a plurality of points. It is connected to the inner tube 10 of the vacuum double tube 1 buried therein. The vacuum double tube 1 that stands up from the ground 101 has a flange structure 11 of an inner tube 10 and an outer tube 20, . It is bent horizontally at the 21 part, and the upper end is indoor 1.
04 and connected to the faucet 107.
なお、前記配管作業は同等特殊技能を必要とするもので
なく、簡単容易に、かつ確実に仕上げることかできる。Note that the piping work does not require the same special skills and can be completed easily and reliably.
また、真空二重管１のフレキシブル構造１１゜２１の部
分での折り曲げは、それ自身の可撓性により極めて簡単
に行える。Further, bending of the flexible structure 11°21 of the vacuum double tube 1 can be performed extremely easily due to its own flexibility.
以上のようにして真空二重管１か接続された水道配管で
は、水抜きバルブ１０３のコック１．０５を開けた状態
で蛇口１．０７を開くと、地中に埋設された水道管１０
２、連結管１０６、真空二重管１の内管１０を介して蛇
口１．０７より水道水が供給される。In the water pipe connected to the vacuum double pipe 1 as described above, when the faucet 1.07 is opened with the cock 1.05 of the drain valve 103 open, the water pipe 1 buried underground
2. Tap water is supplied from the faucet 1.07 via the connecting pipe 106 and the inner pipe 10 of the vacuum double pipe 1.
給水を停止して真空二重管１から蛇口１０７までの水を
抜くには、蛇口１０７を開けた状態でフッ８
とがてきるようにしてもよい。このようにすれば、真空
二重管１の配管上の自由度が増し、用途の拡充等を図る
ことができる。In order to stop the water supply and drain the water from the vacuum double pipe 1 to the faucet 107, the faucet 107 may be opened while the faucet 8 is turned on. In this way, the degree of freedom in piping the vacuum double tube 1 increases, and the range of uses can be expanded.
なお、スペーサ１３はフレキシブル構造１１２１の領域
だけでな（、真空空間Ｓｖの全長に亘って介在させても
よい。このようにすれば、内管１０、外管２０にたわみ
を生しても両者が直接接触することがなく、断熱性の向
上を図ることかできる。Note that the spacer 13 is not limited to the area of the flexible structure 1121 (it may also be interposed over the entire length of the vacuum space Sv. In this way, even if the inner tube 10 and the outer tube 20 are bent, both Since there is no direct contact between the two, it is possible to improve the heat insulation properties.
また、真空二重管１には、内管１０と外管２０との間に
銅箔又はアルミニウム箔を介在させて断熱性能を向上さ
せることも可能である。なお、フレキシブル構造１１２
１の領域では、前記銅箔等はスペーサ１３の外側に配置
する。Moreover, it is also possible to interpose copper foil or aluminum foil between the inner tube 10 and the outer tube 20 of the vacuum double tube 1 to improve the heat insulation performance. In addition, the flexible structure 112
In area 1, the copper foil and the like are placed outside the spacer 13.
さらに、真空二重管１に真空空間Ｓｖを形成する方法は
、前述のように、チップ管２３を使用するものに限らな
い。Furthermore, the method of forming the vacuum space Sv in the vacuum double tube 1 is not limited to the method using the tip tube 23 as described above.
さらにまた、スペーサ■３は、その両端部を固定具Ｉ４
で内管１０に固定するものとしたか、内管１０を外管２
０に挿入するときの挿入先端側にのみ設けるようにして
もよい。Furthermore, the spacer ■3 has its both ends fixed to the fixture I4.
The inner tube 10 is fixed to the inner tube 10 with the outer tube 2.
It may be provided only on the insertion tip side when inserting into the 0 position.
そして、前記実施例では、本発明の真空二重管１を水道
配管に使用する場合について説明したか、これに限らず
、冷暖房設備、自動販売機の配管設備、化学プラントの
送液設備なと、あらゆる配管設備に利用することができ
る。In the above embodiments, the case where the vacuum double pipe 1 of the present invention is used for water piping is explained, but it is not limited to this, but it can also be used for heating and cooling equipment, piping equipment for vending machines, liquid feeding equipment for chemical plants, etc. , can be used for all types of piping equipment.
（発明の効果）
以−１−の説明で明らかなように、本発明に係る真空二
重管によれば、真空二重管をフレキシブル構造部分で任
意の角度に折り曲げて配管することができる。また、折
り曲げ部分では内管と外管との接触がスペーサによって
確実に防止される。(Effects of the Invention) As is clear from the following description of -1-, according to the vacuum double tube according to the present invention, the vacuum double tube can be bent at any angle at the flexible structure portion for piping. Furthermore, the spacer reliably prevents contact between the inner tube and the outer tube at the bent portion.
したがって、真空二重管を用いた配管設備において曲げ
継手を用いる箇所が減り、内管を送られる流体等の熱損
失を減少し、保温性に優れた給排水設備を提供すること
ができる。Therefore, in piping equipment using vacuum double pipes, the number of places where bending joints are used is reduced, heat loss of fluid etc. sent through the inner pipes is reduced, and water supply and drainage equipment with excellent heat retention can be provided.
第１図は本発明に係る真空二重管の部分縦断面図、第２
図は真空二重管を用いた凍結防止設備の断面図である。
１・・真空二重管、１０・内管、
２０・・・外管、１．１．２１・・フレキ／プル構造、
１３ ・スペーサ、３０・・・フランジ、＋００・凍結
防止設備、Ｓｖ・・・真空空間。FIG. 1 is a partial vertical cross-sectional view of a vacuum double tube according to the present invention, and FIG.
The figure is a cross-sectional view of antifreeze equipment using vacuum double tubes. 1. Vacuum double tube, 10. Inner tube, 20. Outer tube, 1.1.21. Flexible/pull structure.
13 - Spacer, 30... flange, +00 - antifreeze equipment, Sv... vacuum space.
Claims (1)
空二重管において、前記内管、外管の少なくとも一箇所
にそれぞれ膨出部を連設した可撓管部を対向するように
設け、前記内管の少なくとも可撓管部外周に耐熱性を有
し、柔軟性を有する断熱スペーサを設けたことを特徴と
する真空二重管。(1) In a vacuum double tube in which an outer tube is provided on the outer periphery of an inner tube via a vacuum space, flexible tube sections each having a bulge connected to the inner tube and the outer tube are placed opposite each other. A vacuum double tube, characterized in that a heat-resistant and flexible heat-insulating spacer is provided on at least the outer periphery of the flexible tube portion of the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1333744A JP2592153B2 (en) | 1989-12-22 | 1989-12-22 | Vacuum double tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1333744A JP2592153B2 (en) | 1989-12-22 | 1989-12-22 | Vacuum double tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03194298A true JPH03194298A (en) | 1991-08-23 |
| JP2592153B2 JP2592153B2 (en) | 1997-03-19 |
Family
ID=18269477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1333744A Expired - Fee Related JP2592153B2 (en) | 1989-12-22 | 1989-12-22 | Vacuum double tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592153B2 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04322086A (en) * | 1991-04-23 | 1992-11-12 | Toshiba Corp | Connection structure of flexible pc substrate |
| JPH0543887U (en) * | 1991-11-11 | 1993-06-15 | 日本酸素株式会社 | Tofu manufacturing equipment |
| JPH05282404A (en) * | 1992-03-31 | 1993-10-29 | Toppan Printing Co Ltd | Package design system |
| JPH0643012U (en) * | 1992-11-12 | 1994-06-07 | 象印マホービン株式会社 | Water bridge |
| JPH06277391A (en) * | 1993-03-26 | 1994-10-04 | Toshiba Corp | Overflow device for washing machine |
| JPH07293718A (en) * | 1994-04-24 | 1995-11-10 | Sanei Suisen Seisakusho:Kk | Valve having attached connection tube |
| JPH07317989A (en) * | 1994-05-25 | 1995-12-08 | Shinwa Sangyo Kk | Heat insulating double tube |
| JPH08109998A (en) * | 1994-10-11 | 1996-04-30 | Zojirushi Corp | Vacuum double bellows pipe |
| JPH08159379A (en) * | 1994-12-02 | 1996-06-21 | Zojirushi Corp | Heat insulating pipe |
| JP2001200980A (en) * | 2000-01-19 | 2001-07-27 | Osamu Muramatsu | Elbow part structure of double piping |
| CN102221100A (en) * | 2011-06-07 | 2011-10-19 | 浙江苏泊尔卫浴有限公司 | Thermal-insulation faucet |
| KR101675874B1 (en) * | 2015-06-12 | 2016-11-14 | 강준우 | Vaccum antifreezing water supply device |
| JP2018123875A (en) * | 2017-01-31 | 2018-08-09 | トヨタ自動車株式会社 | Vacuum insulation pipe |
| JP2019027604A (en) * | 2017-07-25 | 2019-02-21 | トヨタ自動車株式会社 | Double adiabatic wall-structured heating furnace |
| JP2020101280A (en) * | 2018-12-19 | 2020-07-02 | ネクサン | Flexible vacuum heat insulation line |
| WO2023228893A1 (en) * | 2022-05-24 | 2023-11-30 | 和幸 前田 | Insulation device for pipe and container |
| JP2024065889A (en) * | 2022-10-31 | 2024-05-15 | 敦信 辻本 | Elongation/contraction absorption structure of low-temperature liquefied fluid vacuum layer heat insulation double pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01214626A (en) * | 1988-02-20 | 1989-08-29 | Zojirushi Corp | Vacuum double pipe |
-
1989
- 1989-12-22 JP JP1333744A patent/JP2592153B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01214626A (en) * | 1988-02-20 | 1989-08-29 | Zojirushi Corp | Vacuum double pipe |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04322086A (en) * | 1991-04-23 | 1992-11-12 | Toshiba Corp | Connection structure of flexible pc substrate |
| JPH0543887U (en) * | 1991-11-11 | 1993-06-15 | 日本酸素株式会社 | Tofu manufacturing equipment |
| JPH05282404A (en) * | 1992-03-31 | 1993-10-29 | Toppan Printing Co Ltd | Package design system |
| JPH0643012U (en) * | 1992-11-12 | 1994-06-07 | 象印マホービン株式会社 | Water bridge |
| JPH06277391A (en) * | 1993-03-26 | 1994-10-04 | Toshiba Corp | Overflow device for washing machine |
| JPH07293718A (en) * | 1994-04-24 | 1995-11-10 | Sanei Suisen Seisakusho:Kk | Valve having attached connection tube |
| JPH07317989A (en) * | 1994-05-25 | 1995-12-08 | Shinwa Sangyo Kk | Heat insulating double tube |
| JPH08109998A (en) * | 1994-10-11 | 1996-04-30 | Zojirushi Corp | Vacuum double bellows pipe |
| JPH08159379A (en) * | 1994-12-02 | 1996-06-21 | Zojirushi Corp | Heat insulating pipe |
| JP2001200980A (en) * | 2000-01-19 | 2001-07-27 | Osamu Muramatsu | Elbow part structure of double piping |
| CN102221100A (en) * | 2011-06-07 | 2011-10-19 | 浙江苏泊尔卫浴有限公司 | Thermal-insulation faucet |
| KR101675874B1 (en) * | 2015-06-12 | 2016-11-14 | 강준우 | Vaccum antifreezing water supply device |
| JP2018123875A (en) * | 2017-01-31 | 2018-08-09 | トヨタ自動車株式会社 | Vacuum insulation pipe |
| JP2019027604A (en) * | 2017-07-25 | 2019-02-21 | トヨタ自動車株式会社 | Double adiabatic wall-structured heating furnace |
| JP2020101280A (en) * | 2018-12-19 | 2020-07-02 | ネクサン | Flexible vacuum heat insulation line |
| WO2023228893A1 (en) * | 2022-05-24 | 2023-11-30 | 和幸 前田 | Insulation device for pipe and container |
| JP2023172624A (en) * | 2022-05-24 | 2023-12-06 | 和幸 前田 | Heat insulating device for pipe and container |
| JP2024065889A (en) * | 2022-10-31 | 2024-05-15 | 敦信 辻本 | Elongation/contraction absorption structure of low-temperature liquefied fluid vacuum layer heat insulation double pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592153B2 (en) | 1997-03-19 |
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