JPH04200511A - Manufacture of vacuum bottle made of double metal - Google Patents
Manufacture of vacuum bottle made of double metalInfo
- Publication number
- JPH04200511A JPH04200511A JP33721290A JP33721290A JPH04200511A JP H04200511 A JPH04200511 A JP H04200511A JP 33721290 A JP33721290 A JP 33721290A JP 33721290 A JP33721290 A JP 33721290A JP H04200511 A JPH04200511 A JP H04200511A
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- metal
- solidifying agent
- gap
- window hole
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims description 75
- 229910052751 metal Inorganic materials 0.000 title claims description 75
- 238000002844 melting Methods 0.000 claims abstract description 37
- 230000008018 melting Effects 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Thermally Insulated Containers For Foods (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、真空二重金属製魔法瓶の製造法に係るもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a vacuum double metal thermos flask.
従来からある真空二重金属製魔法瓶の製造法の概要は以
下の通りである。The outline of the conventional manufacturing method of vacuum double metal thermos flasks is as follows.
■無底の金属製外瓶の内側に有底の金属製内瓶を配設す
る。■A bottomed metal inner bottle is placed inside a bottomless metal outer bottle.
０内瓶の口部同志をシーム溶接により接合する。The mouths of the inner bottles are joined together by seam welding.
尚、シーム溶融の場合には溶接電極が損傷することのな
いよう溶接個所に水をかけながら行うのか一般である。In addition, in the case of seam melting, water is generally applied to the welding area to prevent damage to the welding electrode.
■金属製外瓶の底に窓孔を穿設した底蓋を溶着する。■Weld a bottom lid with a window hole to the bottom of the metal outer bottle.
■該窓孔の周囲にロー材を盛り、このロー材上に窓孔閉
塞板を載置する。(2) Pile brazing material around the window hole, and place a window hole closing plate on top of the brazing material.
■この状態で瓶体を真空加熱炉に収納すると、窓孔から
排気されながらロー材か溶融して窓孔閉塞板か窓孔を閉
塞し、真空二重金属製魔法瓶が製造される。■When the bottle body is stored in a vacuum heating furnace in this state, the brazing material melts while being exhausted through the window hole and closes the window hole closing plate or the window hole, producing a vacuum double metal thermos flask.
しかし、この従来法には次の欠点かあること力（確認さ
れている。However, it has been confirmed that this conventional method has the following drawbacks:
即ち、前記■の工程のシーム溶接は、溶接電極の損傷を
防ぐべく水を溶接部分にかけながら行う溶接手段である
為、該溶接完了後に必ず乾燥工程を経て前記■、■、モ
して■の真空加熱炉収納工程をとることになる。That is, since the seam welding in step (1) above is a welding method that is performed while applying water to the welded part to prevent damage to the welding electrode, the drying process must be performed after the welding is completed. A vacuum heating furnace storage process will be required.
本発明は、時間がかかり厄介なシーム溶接工程を不要に
するとともに前記乾燥工程を不要にした非常に効率の良
い真空二重金属製魔法瓶の製造法を提供することを技術
的課題とするものである。The technical object of the present invention is to provide a highly efficient method for manufacturing a vacuum double-metal thermos flask that eliminates the time-consuming and troublesome seam welding process as well as the drying process. .
添付図面を参照して本発明の詳細な説明する。 The present invention will now be described in detail with reference to the accompanying drawings.
無底の金属製外瓶１の内側に有底の金属製内瓶２を配設
し、該金属製外瓶ｌに底蓋３を設け、該金属製外瓶１と
該金属製内瓶２との間を真空にした真空二重金属製魔法
瓶の製造法であって、金属製外瓶１内面又は金属製内瓶
２外面にゲッター４を配設し、スポット溶接により金属
製外瓶１の口部１ａと金属製内瓶２の口部２ａとを仮止
めし、続いて金属製外瓶ｌの底開口部から金属製外瓶１
内面と金属製内瓶２外面との間隙５に加熱により溶融し
且つ冷却により固化する溶融固化剤６を投入して内瓶の
口部１ａ、２ａ同志の間隙５に溶融固化剤６を詰入し、
続いて、窓孔７を穿設した底蓋３を金属製外瓶ｌの底部
に設け、続いて、該窓孔７周囲に溶融固化剤８を盛り、
更に、該溶融固化剤８上に窓孔閉塞板９を載置し、上記
状態の瓶体を口部１ａ、２ａを下方にして所定気圧、所
定温度の真空加熱炉中に収納し、前記口部１ａ、２ａ同
志の間隙５に詰入した該溶融固化剤６を溶融せしめて内
瓶の口部１ａ、２ａ同志の間隙５を閉塞するとともに窓
孔閉塞板９により底Ｍ３の窓孔７を閉塞し、内瓶の間隙
５を真空間隙とすることを特徴とする真空二重金属製魔
法瓶の製造法に係るものである。A metal inner bottle 2 with a bottom is arranged inside a bottomless metal outer bottle 1, a bottom lid 3 is provided on the metal outer bottle 1, and the metal outer bottle 1 and the metal inner bottle 2 are arranged. In this method, a getter 4 is provided on the inner surface of the outer metal bottle 1 or the outer surface of the inner metal bottle 2, and the mouth of the outer metal bottle 1 is sealed by spot welding. The part 1a and the mouth part 2a of the metal inner bottle 2 are temporarily fixed, and then the metal outer bottle 1 is inserted from the bottom opening of the metal outer bottle l.
A molten solidifying agent 6 that melts by heating and solidifies by cooling is introduced into the gap 5 between the inner surface and the outer surface of the metal inner bottle 2, and the molten solidifying agent 6 is filled into the gap 5 between the mouths 1a and 2a of the inner bottle. death,
Next, a bottom lid 3 with a window hole 7 is provided at the bottom of the metal outer bottle l, and then a melting solidifying agent 8 is placed around the window hole 7.
Further, a window hole closing plate 9 is placed on the melting and solidifying agent 8, and the bottle body in the above state is placed in a vacuum heating furnace at a predetermined pressure and a predetermined temperature with the mouths 1a and 2a facing downward. The melting and solidifying agent 6 filled in the gap 5 between the parts 1a and 2a is melted to close the gap 5 between the mouth parts 1a and 2a of the inner bottle, and the window hole 7 in the bottom M3 is closed by the window hole closing plate 9. This relates to a method for manufacturing a vacuum double-metallic thermos flask, which is characterized in that the vacuum flask is closed and the gap 5 of the inner bottle is a vacuum gap.
無底の金属製外瓶ｌの内側に有底の金属製内瓶２を配設
し、該金属製外瓶ｌに底蓋３を設け、該金属製外瓶１と
該金属製内瓶２との間を真空にした真空二重金属製魔法
瓶の製造法であって、金属製外瓶１内面又は金属製内瓶
２外面にゲッター４を配設し、スポット溶接により金属
製外瓶ｌの口部１ａと金属製内瓶２の口部２ａとを仮止
めし、続いて金属製外瓶１の底開口部から金属製外瓶ｌ
内面と金属製内瓶２外面との間隙５に加熱により溶融し
且つ冷却により固化する溶融固化剤６を投入して内瓶の
口部１ａ、２ａ同志の間隙５に溶融固化剤６を詰入し、
続いて、窓孔７を穿設した底蓋３を金属製外瓶ｌの底部
に設け、続いて、該窓孔７周囲に前記溶融固化剤６より
も融点の高い溶融固他剤８を盛り、更に、該溶融固化剤
８上に窓孔閉塞板９を載置し、上記状態の瓶体を口部１
ａ、２ａを下方にして所定気圧、所定温度の真空加熱炉
中に収納し、前記口部１ａ、２ａ同志の間隙５に詰入し
た溶融固化剤６を溶融せしめて両肌の口部１ａ。A bottomed metal inner bottle 2 is arranged inside a bottomless metal outer bottle 1, a bottom lid 3 is provided on the metal outer bottle 1, and the metal outer bottle 1 and the metal inner bottle 2 are arranged. In this method, a getter 4 is provided on the inner surface of the outer metal bottle 1 or the outer surface of the inner metal bottle 2, and the mouth of the outer metal bottle l is sealed by spot welding. 1a and the opening 2a of the metal inner bottle 2, and then insert the metal outer bottle l from the bottom opening of the metal outer bottle 1.
A molten solidifying agent 6 that melts by heating and solidifies by cooling is introduced into the gap 5 between the inner surface and the outer surface of the metal inner bottle 2, and the molten solidifying agent 6 is filled into the gap 5 between the mouths 1a and 2a of the inner bottle. death,
Next, a bottom lid 3 with a window hole 7 is provided at the bottom of the metal outer bottle l, and then a molten solidifying agent 8 having a higher melting point than the molten solidifying agent 6 is filled around the window hole 7. Further, a window hole closing plate 9 is placed on the melting and solidifying agent 8, and the bottle body in the above state is placed in the mouth part 1.
The openings 1a of both skins are placed in a vacuum heating furnace at a predetermined pressure and temperature with the openings 1a and 2a facing downward, and the melting and solidifying agent 6 filled in the gap 5 between the openings 1a and 2a is melted.
２ａ同志の間隙５をまず閉塞した後溶融固化剤８を溶融
せしめて窓孔閉塞板９により底蓋３の窓孔７を閉塞し、
両肌の間隙５を真空間隙とすることを特徴とする真空二
重金属製魔法瓶の製造法に係るものである。After first closing the gap 5 between the two a, the melting and solidifying agent 8 is melted and the window hole 7 of the bottom cover 3 is closed with the window hole closing plate 9.
This relates to a method for manufacturing a vacuum double metal thermos flask, characterized in that the gap 5 between both skins is a vacuum gap.
口部１ａ、２ａ同志の間隙５に詰入された溶融固化剤６
が真空加熱により溶融して該口部１ａ、２ａ同志の間隙
５を特徴する
請求項２記載の発明の場合には口部１ａ、２ａ同志の間
隙５に詰入された溶融固化剤６が底蓋３の窓孔７周囲に
盛った溶融固化剤８よりも融点が低い為、窓孔７よりも
先に口部１ａ、２ａ同志の間隙５が閉塞されることにな
る。Melting and solidifying agent 6 filled into the gap 5 between the mouth parts 1a and 2a
In the case of the invention according to claim 2, in which the gap 5 between the openings 1a and 2a is formed by melting by vacuum heating, the molten solidifying agent 6 filled in the gap 5 between the openings 1a and 2a is melted by vacuum heating. Since the melting point is lower than that of the melting and solidifying agent 8 placed around the window hole 7 of the lid 3, the gap 5 between the openings 1a and 2a is closed before the window hole 7 is closed.
図面は本発明の製造実施工程の説明であり、以下に説明
する。The drawings are illustrative of the manufacturing implementation steps of the present invention and are described below.
口部１ａ、２ａ同志の間隙５に真空度を維持確保する為
に配するゲッター４は純チタンの板材を用いる。A getter 4 disposed in the gap 5 between the mouths 1a and 2a to maintain and ensure the degree of vacuum is made of a pure titanium plate.
口部１ａ、２ａのスポット溶接に上る仮止めは適当数ケ
所において行う。Temporary fixing beyond the spot welding of the openings 1a and 2a is performed at several appropriate locations.
金属製外瓶ｌと金属製外瓶ｌに被嵌する底蓋３とはシー
ム溶接、アルゴン溶接により密閉状態に接合する。The metal outer bottle 1 and the bottom cover 3 that fits onto the metal outer bottle 1 are hermetically joined by seam welding or argon welding.
使用する溶融固化剤６．８は、口部１ａ、２ａ同志の間
隙５に詰入する溶融固化剤６と窓孔７の周囲に盛る溶融
固化剤８とは融点が異なるものを用いる。The melting and solidifying agent 6.8 used has a different melting point from the melting and solidifying agent 6 filled in the gap 5 between the openings 1a and 2a and the melting and solidifying agent 8 placed around the window hole 7.
尚、口部１ａ、２ａ同志の間隙５に詰入する溶融固化剤
６は口部１ａ、２ａ同志の間隙５に良好に詰入し得るよ
に粉状のものが望ましく、また、該溶融固化剤６は溶融
した際、口部１ａ、２ａの間隙５内を口部１ａ、２ａに
沿ってを良好に回動流動し得るよう溶融時の粘性が低い
ものを使用することが望ましい。The melting and solidifying agent 6 to be filled into the gap 5 between the mouths 1a and 2a is preferably in powder form so that it can be filled well into the gap 5 between the mouths 1a and 2a. It is desirable that the agent 6 has a low viscosity when melted so that it can rotate well in the gap 5 between the openings 1a, 2a and along the openings 1a, 2a.
一例としては以下の通りである。An example is as follows.
口部１ａ、２ａ同志の間隙５に詰入する溶融固化剤６
福田金属箔粉工業株式会社製の「ニッケルろう」（品
名ＦＰ−６０６）
化学成分 Ｃ。０１５％（重量％）
Ｐ ：ｌＯ，０〜１２．０％（重量％）Ｎｉ：Ｂａ
ｌ。Melting and solidifying agent 6 filled into the gap 5 between the mouth parts 1a and 2a
"Nickel wax" (product name FP-606) manufactured by Fukuda Metal Foil and Powder Industries Co., Ltd. Chemical composition C. 015% (wt%) P:lO, 0-12.0% (wt%) Ni:Ba
l.
その他 、０５０％以下（重量％）
融 点 ・ ９２５〜１０２５℃性
状 ； 粉末
窓孔７の周囲に盛る溶融固化剤８ ：福田金属箔粉工業
株式会社製の［ニッケルろう」（品名Ｆ Ｐ −６０２
）
化学成分 Ｃｒ ・６０〜８．０％（重量％）Ｂ
・ ２．７５〜３．５％（重量％）Ｓｉ ・ ４０
〜５．０％（重量％）Ｆｅ ： ２．０〜４．０％
（重量％）Ｃ：０．１５％以下（重量％）
Ｎｉ：Ｂａｌ
その他 ：０５０％以下（重量％）
融 点 ： １０１０〜１１７５℃性
状 、粉末
上記実施例によると厄介なシーム溶接工程。シーム溶接
工程に付随する乾燥工程が不要となるとともに口部１ａ
、２ａ同志の間隙５が先に閉塞され、続いて窓孔７が閉
塞される為、間隙５内の排気は窓孔７のみから行なわれ
、金属製外瓶ｌと金属製内瓶２の間隙５が確実に真空排
気され且つ窓孔閉塞板９により確実な真空封止が行なわ
れることになる。Others, 050% or less (wt%) Melting point: 925-1025℃
Shape: Melting solidifying agent 8 applied around the powder window hole 7: [Nickel wax] manufactured by Fukuda Metal Foil & Powder Industry Co., Ltd. (product name FP-602)
) Chemical composition Cr ・60-8.0% (wt%)B
・2.75-3.5% (weight%) Si ・40
~5.0% (wt%) Fe: 2.0~4.0%
(wt%) C: 0.15% or less (wt%) Ni: Bal Others: 050% or less (wt%) Melting point: 1010-1175°C
According to the powder example above, the cumbersome seam welding process. The drying process associated with the seam welding process is no longer necessary, and the opening 1a
, 2a are closed first, and then the window hole 7 is closed, so the exhaust inside the gap 5 is performed only through the window hole 7, and the gap between the metal outer bottle l and the metal inner bottle 2 is closed. 5 is reliably evacuated, and the window hole closing plate 9 ensures reliable vacuum sealing.
真空加熱炉の気圧、温度は１０″−１〜１０−’Ｔ ｏ
ｒｒ。The pressure and temperature of the vacuum heating furnace are 10"-1 to 10-'T o
rr.
９００〜１１００℃程度が最適である。The optimum temperature is about 900 to 1100°C.
図中符号１０はスポット仮止め部、符号１１は溶融固化
剤６の溶融部、符号１２は金属製外瓶と底蓋３との溶接
部である。In the figure, reference numeral 10 is a spot temporary fixing part, reference numeral 11 is a melting part of the melt-solidifying agent 6, and reference numeral 12 is a welding part between the metal outer bottle and the bottom lid 3.
本発明は上述のようにしたから、請求項１．２記載の発
明においては、
イ）従来法で用いた厄介で時間を要するシーム溶接工程
が不要となる。Since the present invention is as described above, in the invention according to claim 1.2, a) the troublesome and time-consuming seam welding process used in the conventional method is unnecessary.
口）シーム溶接工程を採用すると前述したように必然的
に要求される水分乾燥工程か不要となる。口) If the seam welding process is adopted, the moisture drying process that is inevitably required as mentioned above becomes unnecessary.
等の秀れた効果を発揮することになる。It will demonstrate excellent effects such as.
そして、更に請求項２記載の発明においては、ハ）口部
側をまず、閉塞してから次に底蓋の窓孔を閉塞する為よ
り確実に真空封止が実現し得ることになる。Furthermore, in the invention as set forth in claim 2, c) the mouth side is first closed, and then the window hole of the bottom cover is closed, so that vacuum sealing can be realized more reliably.
という効果も発揮することになる。This effect will also be achieved.
以上、本発明は秀れた効果を発揮する真空二重金属製魔
法瓶の製造法を提供することになる。As described above, the present invention provides a method for manufacturing a vacuum double metal thermos flask that exhibits excellent effects.
図面は本発明の一実施例を示すもので、第１゜２．３図
は本発明の製造工程を示す説明断面図である。
１ 金属製外瓶、１ａ・・口部、２・金属製内瓶、２ａ
・・口部、３・・底蓋、４・・・ゲッター、５・間隙、
６・・・溶融固化剤、７・・窓孔、８・溶融固化剤、９
・・窓孔閉塞板。
平成 ２年１１月３０日
出願人 株式会社織田島器物製作所
発明者 織田島 俊 雄
代理人 吉 井 昭 栄The drawings show one embodiment of the present invention, and FIG. 1.2.3 is an explanatory sectional view showing the manufacturing process of the present invention. 1 Metal outer bottle, 1a...mouth, 2 Metal inner bottle, 2a
... Mouth, 3. Bottom cover, 4. Getter, 5. Gap,
6. Melting solidification agent, 7. Window hole, 8. Melting solidification agent, 9
...Window hole blocking plate. November 30, 1990 Applicant: Odajima Craftsmanship Co., Ltd. Inventor: Toshio Odajima Agent: Akie Yoshii
Claims (1)
し、該金属製外瓶に底蓋を設け、該金属製外瓶と該金属
製内瓶との間を真空にした真空二重金属製魔法瓶の製造
法であって、金属製外瓶内面又は金属製内瓶外面にゲッ
ターを配設し、スポット溶接により金属製外瓶の口部と
金属製内瓶の口部とを仮止めし、続いて金属製外瓶の底
開口部から金属製外瓶内面と金属製内瓶外面との間隙に
加熱により溶融し且つ冷却により固化する溶融固化剤を
投入して両瓶の口部同志の間隙に溶融固化剤を詰入し、
続いて、窓孔を穿設した底蓋を金属製外瓶の底部に設け
、続いて、該窓孔周囲に溶融固化剤を盛り、更に、該溶
融固化剤上に窓孔閉塞板を載置し、上記状態の瓶体を口
部を下方にして所定気圧、所定温度の真空加熱炉中に収
納し、前記口部同志の間隙に詰入した該溶融固化剤を溶
融せしめて両瓶の口部同志の間隙を閉塞するとともに窓
孔閉塞板により底蓋の窓孔を閉塞し、両瓶の間隙を真空
間隙とすることを特徴とする真空二重金属製魔法瓶の製
造法。 ２ 無底の金属製外瓶の内側に有底の金属製内瓶を配設
し、該金属製外瓶に底蓋を設け、該金属製外瓶と該金属
製内瓶との間を真空にした真空二重金属製魔法瓶の製造
法であって、金属製外瓶内面又は金属製内瓶外面にゲッ
ターを配設し、スポット溶接により金属製外瓶の口部と
金属製内瓶の口部とを仮止めし、続いて金属製外瓶の底
開口部から金属製外瓶内面と金属製内瓶外面との間隙に
加熱により溶融し且つ冷却により固化する溶融固化剤を
投入して両瓶の口部同志の間隙に溶融固化剤を詰入し、
続いて、窓孔を穿設した底蓋を金属製外瓶の底部に設け
、続いて、該窓孔周囲に前記溶融固化剤よりも融点の高
い溶融固化剤を盛り、更に、該溶融固化剤上に窓孔閉塞
板を載置し、上記状態の瓶体を口部を下方にして所定気
圧、所定温度の真空加熱炉中に収納し、前記口部同志の
間隙に詰入した溶融固化剤を溶融せしめて両瓶の口部同
志の間隙をまず閉塞した後溶融固化剤を溶融せしめて窓
孔閉塞板により底蓋の窓孔を閉塞し、両瓶の間隙を真空
間隙とすることを特徴とする真空二重金属製魔法瓶の製
造法。[Scope of Claims] 1. A metal inner bottle with a bottom is disposed inside a bottomless metal outer bottle, a bottom lid is provided on the metal outer bottle, and the metal outer bottle and the metal inner bottle are connected to each other. A method for manufacturing a vacuum double metal thermos flask that creates a vacuum between the bottle and the bottle, in which a getter is provided on the inner surface of the outer metal bottle or the outer surface of the inner metal bottle, and the mouth of the outer metal bottle and the metal are bonded by spot welding. A melting and solidifying agent that temporarily fixes the mouth of the inner bottle and then melts it by heating and solidifies by cooling from the bottom opening of the outer metal bottle into the gap between the inner surface of the outer metal bottle and the outer surface of the inner metal bottle. and fill the gap between the mouths of both bottles with the molten solidifying agent.
Next, a bottom lid with a window hole is provided on the bottom of the metal outer bottle, then a melting solidifying agent is placed around the window hole, and a window hole closing plate is placed on the melting solidifying agent. Then, the bottles in the above state are placed in a vacuum heating furnace at a predetermined pressure and temperature with the mouths facing downward, and the molten solidifying agent filled in the gap between the mouths is melted to form the mouths of both bottles. A method for producing a vacuum double metal thermos flask, which is characterized in that the gap between the two bottles is closed, and the window hole in the bottom cover is closed with a window hole closing plate, so that the gap between the two bottles becomes a vacuum space. 2 A bottomed metal inner bottle is placed inside a bottomless metal outer bottle, a bottom cover is provided on the metal outer bottle, and a vacuum is created between the metal outer bottle and the metal inner bottle. A method for manufacturing a vacuum double metal thermos flask, in which a getter is provided on the inner surface of the outer metal bottle or the outer surface of the inner metal bottle, and the mouth of the outer metal bottle and the mouth of the inner metal bottle are bonded by spot welding. Then, a molten solidifying agent that is melted by heating and solidified by cooling is poured into the gap between the inner surface of the outer metal bottle and the outer surface of the inner metal bottle from the bottom opening of the outer metal bottle, and then both bottles are sealed. Fill the gap between the mouths of the molten solidifying agent,
Next, a bottom lid with a window hole is provided at the bottom of the metal outer bottle, and then a melting and solidifying agent having a higher melting point than the melting and solidifying agent is placed around the window hole, and further, a melting and solidifying agent is placed around the window hole. A window hole closing plate is placed on top, and the bottle body in the above state is placed with the mouth facing downward in a vacuum heating furnace at a predetermined pressure and temperature, and the molten solidifying agent is filled into the gap between the mouths. First, the gap between the openings of both bottles is closed by melting the agent, and then the molten solidifying agent is melted and the window hole in the bottom cover is closed by a window hole closing plate, so that the gap between the two bottles becomes a vacuum space. A method for manufacturing a vacuum double metal thermos flask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2337212A JPH0611254B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of vacuum double metal thermos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2337212A JPH0611254B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of vacuum double metal thermos |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04200511A true JPH04200511A (en) | 1992-07-21 |
| JPH0611254B2 JPH0611254B2 (en) | 1994-02-16 |
Family
ID=18306497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2337212A Expired - Fee Related JPH0611254B2 (en) | 1990-11-30 | 1990-11-30 | Manufacturing method of vacuum double metal thermos |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611254B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133162A (en) * | 1976-04-30 | 1977-11-08 | Nippon Oxygen Co Ltd | Production of vacuum bottle fabricated from metal |
| JPS6373923A (en) * | 1986-09-17 | 1988-04-04 | 日本酸素株式会社 | Production of metal vacuum double tank |
| JPS6449519A (en) * | 1987-08-21 | 1989-02-27 | Nippon Oxygen Co Ltd | Production of metal thermos |
-
1990
- 1990-11-30 JP JP2337212A patent/JPH0611254B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133162A (en) * | 1976-04-30 | 1977-11-08 | Nippon Oxygen Co Ltd | Production of vacuum bottle fabricated from metal |
| JPS6373923A (en) * | 1986-09-17 | 1988-04-04 | 日本酸素株式会社 | Production of metal vacuum double tank |
| JPS6449519A (en) * | 1987-08-21 | 1989-02-27 | Nippon Oxygen Co Ltd | Production of metal thermos |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0611254B2 (en) | 1994-02-16 |
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