JPH02215416A - Manufacture of metallic thermos bottle - Google Patents
Manufacture of metallic thermos bottleInfo
- Publication number
- JPH02215416A JPH02215416A JP3726589A JP3726589A JPH02215416A JP H02215416 A JPH02215416 A JP H02215416A JP 3726589 A JP3726589 A JP 3726589A JP 3726589 A JP3726589 A JP 3726589A JP H02215416 A JPH02215416 A JP H02215416A
- Authority
- JP
- Japan
- Prior art keywords
- bottle
- exhaust port
- metal
- sealing
- vacuum
- 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 description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 239000007769 metal material Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000003566 sealing material Substances 0.000 claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010936 titanium Substances 0.000 claims abstract description 15
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 15
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 9
- 238000005304 joining Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007747 plating Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010792 warming Methods 0.000 abstract 1
- 238000010494 dissociation reaction Methods 0.000 description 6
- 230000005593 dissociations Effects 0.000 description 6
- 238000005219 brazing Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 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］
この発明は、金属製魔法瓶の製造方法に関し、保温性能
の良好な金属製魔法瓶を低コストで製造できるようにし
たものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a metal thermos flask, and is a method for manufacturing a metal thermos flask with good heat retention performance at a low cost.
［従来技術とその課題］
従来の金属製魔法瓶としては、第４図に示したように、
内瓶ｌと外１に２との間の空隙部４を真空断熱層７とし
た二重構造のものが種々提供されている。[Prior art and its problems] As shown in Figure 4, the conventional metal thermos flask is
Various double-structured bottles are provided in which the gap 4 between the inner bottle 1 and the outer bottle 1 is a vacuum insulation layer 7.
この種の金属製魔法瓶を製造するには、第５図に示した
ように、外表面に輻射率の低い金属からなるめっき層５
が設けられた内瓶１と、底部に排気口３が設けられ、か
つ内表面に内瓶１と同様にめっき層５が設けられた有底
筒状の外瓶２とを、空隙部４が形成されるように口部で
接合する。ついでこれを倒立して、排気口３にろう材等
の封止材８を間欠的に配置して、その上に封止板６を置
いて真空加熱炉内に収容して、真空加熱状態で上記排気
口３がら空隙部４内の排気を行Ｌ）、空隙部４内を真空
とした後、排気口３上の固形ろう材等の封止材８を溶融
して載置された封止板６を自重落下させ外瓶２の底部の
排気口３を封止する方法が用いられている。In order to manufacture this kind of metal thermos flask, as shown in Fig.
A gap 4 connects an inner bottle 1 which is provided with Join at the mouth so that it is formed. Next, it is turned upside down, a sealing material 8 such as a brazing material is placed intermittently at the exhaust port 3, a sealing plate 6 is placed on top of the sealing material 8, and the sealing plate 6 is placed in a vacuum heating furnace and heated in a vacuum state. After exhausting the air inside the gap 4 through the exhaust port 3 and making the inside of the gap 4 a vacuum, a sealing material 8 such as a solid brazing material on the exhaust port 3 is melted and placed. A method is used in which the plate 6 is allowed to fall under its own weight and the exhaust port 3 at the bottom of the outer bottle 2 is sealed.
ところで通常、内瓶１、外瓶２および封止板６等を構成
する金属の表面には、一般に酸化被膜が形成されている
のが普通である。これらの酸化被膜はろう材等の封止材
８の濡れ性を低下させることとなる。それ故、排気口３
を封止する際には、封止材８の濡れ性を良好にするため
に、従来は高温加熱により、外瓶２および封止板６表面
の酸化被膜を解離させることによって行っているのが実
状である。ところが金属の酸化被膜の解離条件は、たと
えば金属製魔法瓶に好適に用いられるステンレス鋼では
Ｉ Ｘ Ｉ Ｏ−’ｔｏｒｒ以下の圧力下で９５０℃以
」二の加熱、さらに軽量化を目的として好適に用いられ
るチタンにあっては上記圧力下で１２００℃以上の高温
加熱というようなものであり、金属製魔法瓶の製造コス
トを高くする要因となっていた。By the way, an oxide film is generally formed on the surfaces of the metals that constitute the inner bottle 1, the outer bottle 2, the sealing plate 6, and the like. These oxide films reduce the wettability of the sealing material 8 such as a brazing material. Therefore, exhaust port 3
Conventionally, in order to improve the wettability of the sealing material 8, the oxide film on the surfaces of the outer bottle 2 and the sealing plate 6 is dissociated by high-temperature heating. This is the actual situation. However, the dissociation conditions for the metal oxide film are, for example, for stainless steel, which is suitably used for metal thermos flasks, heating at 950°C or higher under a pressure of less than I The titanium used must be heated at a high temperature of 1200° C. or higher under the above pressure, which is a factor that increases the manufacturing cost of metal thermos flasks.
さらに内瓶ｌまたは外瓶２がチタンまたはチタン合金か
らなるチタン製魔法瓶では、酸化被膜解離温度にまで加
熱すると、チタンは非常に化学活性の高い金属であるた
めに、めっき層５の金属と反応し、輻射率の高い合金を
形成し、金属製魔法瓶の保温性能を低下させるという不
都合もあった。Furthermore, in a titanium thermos flask in which the inner bottle 1 or the outer bottle 2 is made of titanium or a titanium alloy, when heated to the oxide film dissociation temperature, titanium reacts with the metal of the plating layer 5 because titanium is a highly chemically active metal. However, it also has the disadvantage that it forms an alloy with high emissivity, reducing the heat retention performance of metal thermos flasks.
この発明は、上記課題を解決するためになされたもので
あって、予め排気口の周部に低温還元性金属材を接合し
た後、排気口を真空封止することにより、保温性能の良
好な金属製魔法瓶を低い製造コストで得られるような製
造方法を提供することを目的としている。This invention was made in order to solve the above problem, and has good heat retention performance by bonding a low-temperature reducing metal material around the exhaust port in advance and then vacuum sealing the exhaust port. The purpose is to provide a manufacturing method that allows a metal thermos flask to be obtained at low manufacturing cost.
［課題を解決するための手段］
この発明の請求項Ｉ記載の金属製魔法瓶の製造方法は、
金属製の内瓶と外瓶とからなり、これら内外瓶間の空隙
部を真空断熱層とした金属製魔法瓶を製造するにあたり
、いずれか一方に排気口を設けてなる内瓶と外瓶とを口
部で接合して二重構造とした後、上記排気口の周部に封
止材を介して封止板を載置し、これを真空加熱炉で真空
加熱処理して上記排気口より上記空隙部内を真空排気し
、真空断熱層を形成しつつ排気口を封止する金属製魔法
瓶の製造方法であって、上記排気口周部を予め低温還元
性金属材で形成せしめておくことを、また請求項２記載
の製造方法は、金属製の内瓶と外瓶とからなり、これら
内外瓶間の空隙部を真空断熱層とした金属製魔法瓶を製
造するにあたり、いずれか一方に排気口を設けてなる内
瓶と外瓶とを口部で接合して二重構造とした後、上記排
気口の周部に封止材を介して封止板を載置し、これを真
空加熱炉で真空加熱処理して上記排気口より上記空隙部
内を真空排気し、真空断熱層を形成しつつ排気口を封止
する金属製魔法瓶の製造方法であって、上記封止板に低
温還元性金属材を用いることを、それぞれの解決手段と
した。[Means for Solving the Problems] The method for manufacturing a metal thermos flask according to claim I of the present invention includes:
In manufacturing a metal thermos flask, which consists of a metal inner bottle and an outer bottle, and the gap between the inner and outer bottles is a vacuum insulation layer, the inner bottle and the outer bottle are provided with an exhaust port on either side. After joining at the mouth to form a double structure, a sealing plate is placed around the exhaust port via a sealing material, and this is vacuum heated in a vacuum heating furnace to form a double structure from the exhaust port. A method for manufacturing a metal thermos flask, which evacuates the inside of the cavity and seals the exhaust port while forming a vacuum heat insulating layer, the method comprising: forming the peripheral part of the exhaust port in advance with a low-temperature reducible metal material; Further, the manufacturing method according to claim 2 provides an exhaust port in one of the metal thermos flasks, which is composed of an inner bottle and an outer metal bottle, and the gap between the inner and outer bottles is a vacuum insulation layer. After the inner bottle and outer bottle are joined at the mouth to form a double structure, a sealing plate is placed around the exhaust port via a sealing material, and this is heated in a vacuum heating furnace. A method for manufacturing a metal thermos flask, in which the cavity is evacuated through the exhaust port through vacuum heat treatment, and the exhaust port is sealed while forming a vacuum insulation layer, the sealing plate being provided with a low-temperature reducible metal material. The solution was to use .
さらにこの発明の請求項３記載の製造方法にあっては外
瓶をチタンまたはチタン合金製とすることを、請求項４
記載の製造方法にあっては、低温還元性金属材として鉄
、銅、ニッケルから選ばれた１１あるいはこれらの合金
であることを、それぞれの解決手段とした。Furthermore, in the manufacturing method according to claim 3 of the present invention, the outer bottle is made of titanium or a titanium alloy.
In the manufacturing method described, the solution is to use 11 selected from iron, copper, and nickel, or an alloy thereof, as the low-temperature reducible metal material.
［作用］
この発明の請求項！記載の製造方法では、予め排気口周
部に低温還元性金属材を形成し、請求項２記載の製造方
法では、封止板に低温還元性金属材を用いたので、いず
れの製造方法であっても低温還元性金属材か低い加熱温
度によって酸化被膜を解離するので、封止材の濡れ性を
良好にすることができ、排気口を容易に封止することが
できる。[Operation] Claims of this invention! In the manufacturing method described above, a low-temperature reducible metal material is formed in advance around the exhaust port, and in the manufacturing method according to claim 2, a low-temperature reducible metal material is used for the sealing plate. Since the oxide film is dissociated by the low heating temperature of the low-temperature reducible metal material, the wettability of the sealing material can be improved, and the exhaust port can be easily sealed.
［実施例］ 以下、この発明の詳細な説明する。[Example] The present invention will be described in detail below.
第１図は、この発明の請求項１記載の製造方法によって
得られた金属製魔法瓶の一例を示したもので、第１図に
示したものが第４図に示したものと異なるところは、た
とえば外［２の底部に形成された排気口３の周部に円環
状の低温還元性金属材板９を設けたところである。この
ような金属製魔法瓶は、第２図に示したように、内瓶Ｉ
と外瓶２とを口部で接合し、かっ外瓶２の底部に設けら
れた排気口３の周部に低温還元性金属材９を接合したの
ち、封止材８と封止板６とを載置し、これを真空加熱炉
内にて真空加熱処理して空隙部４内を真空排気しつつ加
熱して排気口３を封止することにより製造することがで
きる。FIG. 1 shows an example of a metal thermos bottle obtained by the manufacturing method according to claim 1 of the present invention, and the differences between the one shown in FIG. 1 and the one shown in FIG. 4 are as follows. For example, an annular low-temperature reducible metal plate 9 is provided around the exhaust port 3 formed at the bottom of the outer plate 2. As shown in Figure 2, such a metal thermos flask has an inner bottle I.
After joining the outer bottle 2 and the outer bottle 2 at the mouth and joining the low temperature reducing metal material 9 around the exhaust port 3 provided at the bottom of the outer bottle 2, the sealing material 8 and the sealing plate 6 are bonded. This can be manufactured by placing a vacuum heat treatment on this in a vacuum heating furnace, heating the space 4 while evacuating the inside of the gap 4, and sealing the exhaust port 3.
有底筒状で口部が縮径された外瓶２と、この外瓶２より
も小さな径を有する有底筒状体からなる内ｒｃｔとは、
いずれもステンレス鋼やチタン合金等の高強度で保温性
能が良好な金属または合金から製造でき、内瓶■の外表
面および外瓶２の内表面には、それぞれ必要に応じてめ
っき層５を形成する。このめっき層５は輻射率の小さな
銀などの金属めっき層であって、電気めっき法によって
形成することができるほか、銀鏡反応のような化学めっ
き法等によって形成することができる。なおこのめっき
層５は、第１図および第２図に示したように内瓶１と外
瓶２との両方に形成するほか、内瓶１あるいは外瓶２の
いずれが一方のみに形成しても、さらには全く形成しな
くとも良い。また本実施例では外瓶２の底部に排気口３
を設けているが、排気口３は内瓶ｌ、外瓶２のいずれか
一方の底部に設ければよい。次に内瓶Ｉを外瓶２内に挿
入し、口部で接合する。さらにこの排気口３の周部の外
［２の外表面には、酸化被膜の解離温度が低い低温還元
性金属材９を円環状に接合する。The outer bottle 2 has a cylindrical shape with a bottom and has a reduced diameter, and the inner RCT is a cylindrical body with a bottom and a diameter smaller than that of the outer bottle 2.
Both can be manufactured from metals or alloys with high strength and good heat retention performance, such as stainless steel or titanium alloy, and a plating layer 5 is formed on the outer surface of the inner bottle ■ and the inner surface of the outer bottle 2, respectively, as necessary. do. This plating layer 5 is a metal plating layer such as silver having a low emissivity, and can be formed by electroplating or chemical plating such as silver mirror reaction. The plating layer 5 may be formed on both the inner bottle 1 and the outer bottle 2 as shown in FIGS. 1 and 2, or may be formed on only one of the inner bottle 1 and the outer bottle 2. Or even, it may not be formed at all. In addition, in this embodiment, an exhaust port 3 is provided at the bottom of the outer bottle 2.
However, the exhaust port 3 may be provided at the bottom of either the inner bottle 1 or the outer bottle 2. Next, the inner bottle I is inserted into the outer bottle 2 and joined at the mouth. Furthermore, a low-temperature reducible metal material 9 having a low dissociation temperature of the oxide film is bonded to the outer surface of the exhaust port 3 in an annular shape.
この低温還元性金属材９としては、内瓶１および外瓶２
を構成する金属よりも酸化被膜解Ｓ温度が低い金属また
は合金であれば良く、たとえば鉄５６０℃、銅４７０℃
、ニッケル６８０℃のほか錫、コバルト、鉛等を好適に
用いることができる。これら低温還元性金属材９を外瓶
２の排気口３の周部に接合するには、拡散接合や溶接な
どの通常の接合手段を用いることができる。この低温還
元性金属材９上には、複数個の固形ろう材からなる封止
材８．８を介して封止板６を載置する。封止材８．８の
構成個数は、少なくとも２以上であることが好ましく、
このようにすると封止材８．８間に、空隙ＷＪ４内のガ
スを排気する際の通気路を確保することができる。この
封止材８．８としては内瓶１、外瓶２および低温還元性
金属材９の種類によって適宜選択することができるが、
Ａｇ−ＣｕＩｎ系合金、Ａｇ−Ｃｕ−３ｎ系合金、Ｃｕ
−Ｐ系合金、Ａｇ−Ｃｕ系合金、Ａｌ１系合金等を好適
に用いることができる。さらに封止板６としては、これ
ら封止材８．８と低温でも良好な濡れ性を有し、かつ酸
化被膜の解離温度の低い金属または合金である必要があ
り、上記低温還元性金属材９と同様のものが好ましい。The low-temperature reducible metal material 9 includes the inner bottle 1 and the outer bottle 2.
Any metal or alloy whose oxide film solution S temperature is lower than that of the constituent metals may be used, such as iron at 560°C and copper at 470°C.
, nickel at 680° C., tin, cobalt, lead, etc. can be suitably used. In order to join these low-temperature reducible metal materials 9 to the circumference of the exhaust port 3 of the outer bottle 2, ordinary joining means such as diffusion joining or welding can be used. A sealing plate 6 is placed on this low-temperature reducible metal material 9 via a sealing material 8.8 made of a plurality of solid brazing fillers. It is preferable that the number of the sealing materials 8.8 is at least 2 or more,
In this way, a ventilation path for exhausting the gas in the gap WJ4 can be secured between the sealing members 8.8. The sealing material 8.8 can be appropriately selected depending on the types of the inner bottle 1, outer bottle 2, and low-temperature reducing metal material 9.
Ag-CuIn alloy, Ag-Cu-3n alloy, Cu
-P-based alloys, Ag-Cu-based alloys, Al1-based alloys, etc. can be suitably used. Furthermore, the sealing plate 6 must be made of a metal or alloy that has good wettability with the sealing materials 8.8 even at low temperatures and has a low dissociation temperature of the oxide film, and the low-temperature reducible metal material 9. The same one is preferred.
ついで外瓶２を加熱しつつ空隙部４内を排気口３から真
空排気すると共に、排気口３の周部を加熱する。加熱し
つつ真空排気すると空隙部４内は減圧状態となるばかり
でなく、めっき層５表面に吸着されているガスが加熱に
より解離するので、排気口３を封止した後に、高い真空
度を有する真空断熱層７を形成することができる。加熱
により温度が上昇すると、低温還元性金属材９と封止板
６とは、いずれも酸化被膜解離温度の低い金属からなる
ので、この減圧加熱によりその表面の酸化被膜が解離し
て封止材８の濡れ性が良好となる。Next, while heating the outer bottle 2, the inside of the cavity 4 is evacuated from the exhaust port 3, and the circumference of the exhaust port 3 is heated. If the vacuum is evacuated while heating, not only will the inside of the cavity 4 be in a reduced pressure state, but also the gas adsorbed on the surface of the plating layer 5 will be dissociated by heating, so that a high degree of vacuum will be maintained after the exhaust port 3 is sealed. A vacuum insulation layer 7 can be formed. When the temperature rises due to heating, the low-temperature reducible metal material 9 and the sealing plate 6 are both made of metals with a low oxide film dissociation temperature, so this reduced pressure heating causes the oxide film on the surface to dissociate, causing the sealing material to dissociate. The wettability of No. 8 is good.
加熱温度がさらに上昇すると、封止材８．８が溶融し、
濡れ性が良好となった低温還元性金属材９および封止板
６の表面に浸透して、排気口３を真空封止することがで
きる。When the heating temperature further increases, the sealing material 8.8 melts,
It penetrates into the surfaces of the low-temperature reducible metal material 9 and the sealing plate 6 with good wettability, and the exhaust port 3 can be vacuum-sealed.
上記のように、この発明の請求項１記載の製造方法では
、予め排気口３の周部に低温還元性金属材９を接合して
おくと共に、酸化被膜の解離温度の低い金属によって封
止板６を構成したので、従来の製造方法に比較して低い
温度で酸化被膜が解離するようになり、封止材８の濡れ
性が良好となるので、低温封止が可能となる。よって、
金属製魔法瓶の製造コストを低下させることができる。As described above, in the manufacturing method according to claim 1 of the present invention, the low temperature reducing metal material 9 is bonded to the circumference of the exhaust port 3 in advance, and the sealing plate is made of a metal whose oxide film has a low dissociation temperature. 6, the oxide film is dissociated at a lower temperature than in conventional manufacturing methods, and the wettability of the sealing material 8 is improved, making low-temperature sealing possible. Therefore,
The manufacturing cost of metal thermos flasks can be reduced.
またこの発明の請求項２記載の製造方法は、上記のよう
に排気口３の周部に予め低温還元性金属材９を形成せし
めることにより封止板６と封止材８．８との濡れ性を良
好にするかわりに、封止板６に低温還元性金属材９を用
い、これにより封止板６と封止材８．８との濡れ性を良
好にするようにしたものである。Further, the manufacturing method according to claim 2 of the present invention is such that the sealing plate 6 and the sealing material 8.8 are wetted by forming the low-temperature reducible metal material 9 in advance around the exhaust port 3 as described above. Instead of improving the properties, a low-temperature reducible metal material 9 is used for the sealing plate 6, thereby improving the wettability between the sealing plate 6 and the sealing material 8.8.
このようにして封止板６を低温還元性金属材９によって
構成すると、金属製魔法瓶の構成部材の数を低減させる
ことができ、製造工程の簡略化および製造コストの低減
化が可能となる。When the sealing plate 6 is constructed of the low-temperature reducible metal material 9 in this manner, the number of constituent members of the metal thermos flask can be reduced, making it possible to simplify the manufacturing process and reduce manufacturing costs.
さらに外瓶１がチタンまたはチタン合金からなるこの発
明の請求項３記載の製造方法によって製造された金属製
魔法瓶にあっては、真空加熱処理の加熱温度を低くする
ことができるので、保温性能を向上させる目的で内瓶外
表面と外瓶内表面とに被覆したメツキ層の金属とチタン
とが真空加熱処理の際に、熱伝導率の高い合金となるの
を防止することができ、保温性能の良好なチタン製魔法
瓶を容易に得ることができる。Furthermore, in the metal thermos manufactured by the manufacturing method according to claim 3 of the present invention, in which the outer bottle 1 is made of titanium or a titanium alloy, the heating temperature of the vacuum heating treatment can be lowered, so that the heat retention performance can be improved. This prevents the metal and titanium of the plating layer coated on the outer surface of the inner bottle and the inner surface of the outer bottle from forming an alloy with high thermal conductivity during vacuum heat treatment to improve heat retention performance. A titanium thermos flask with good quality can be easily obtained.
さらにこの発明の請求項４記載の製造方法にあっては、
低温還元性金属材９として、安価でかつ取り扱い性およ
び加工性が良好な鉄、銅、ニッケルから選ばれた１種あ
るいはこれらの合金を用いることにより、製造工程を非
常に簡略化できるとともに製造コストをも低減すること
ができる。Furthermore, in the manufacturing method according to claim 4 of this invention,
By using one type selected from iron, copper, and nickel, or an alloy thereof, which is inexpensive and has good handling and workability, as the low-temperature reducible metal material 9, the manufacturing process can be greatly simplified and the manufacturing cost can be reduced. can also be reduced.
［発明の効果］
以上説明したように、この発明の請求項１記載の製造方
法は、排気口周部を予め低温還元性金属材で形成せしめ
ておくものであり、請求項２記載の製造方法は、封止板
に低温還元性金属材を用いるものであるので、真空封止
の際の加熱温度を従来のものよりも低くすることができ
るので、いずれも低コストで金属製魔法瓶を製造するこ
とができる。[Effects of the Invention] As explained above, the manufacturing method according to claim 1 of the present invention is such that the peripheral part of the exhaust port is formed in advance from a low-temperature reducible metal material, and the manufacturing method according to claim 2 Since the sealing plate uses a low-temperature reducing metal material, the heating temperature during vacuum sealing can be lower than that of conventional products, so both can manufacture metal thermos flasks at low cost. be able to.
さらにこの発明の請求項３記載の製造方法によって製造
されたチタンまたはチタン合金製魔法瓶にあっては、真
空封止の加熱温度を、チタンまたはチタン合金の活性化
温度よりも低くすることができるので、内瓶または外瓶
を構成しているチタンまたはチタン合金がめつき層等の
金属と反応して輻射率の高い合金となるのを防止するこ
とができ、軽量でかつ保温性能の良好なチタン製魔法瓶
を容易に得ることができる。Furthermore, in the titanium or titanium alloy thermos manufactured by the manufacturing method according to claim 3 of the present invention, the heating temperature for vacuum sealing can be lower than the activation temperature of titanium or titanium alloy. Made of titanium, which is lightweight and has good heat retention performance, it can prevent the titanium or titanium alloy that makes up the inner bottle or outer bottle from reacting with metal such as the plating layer to form an alloy with high emissivity. You can easily get a thermos.
またこの発明の請求項４記載の製造方法では、低温還元
性金属材として安価でかつ取り扱い性および加工性が良
好な鉄、銅、ニッケルから選ばれた１種あるいはこれら
の合金を用いたので、製造工程を簡略化できると共に製
造コストをも低減することができる。Further, in the manufacturing method according to claim 4 of the present invention, one type selected from iron, copper, and nickel or an alloy thereof, which is inexpensive and has good handling and workability, is used as the low-temperature reducible metal material. The manufacturing process can be simplified and manufacturing costs can also be reduced.
第１図はこの発明の請求項１記載の製造方法によって得
られた金属製魔法瓶の一例を示した概略断面図、第２図
は第１図に示した金属製魔法瓶の封止口封止前の状態を
示した概略断面図、第３図は第２図に示した金属製魔法
瓶の要部拡大図、第４図は従来方法によって得られた金
属製魔法瓶の一例を示した概略断面図、第５図は第４図
に示した金属製魔法瓶の排気口封止面の状態を示した概
略断面図である。
！・・・内瓶、
２・・・外瓶、
３・・・排気口、
４・・・空隙部、
６・・・封止板、
７・・・真空断熱部、
８・・・封止材、
９・・・低温還元性金属材。FIG. 1 is a schematic sectional view showing an example of a metal thermos bottle obtained by the manufacturing method according to claim 1 of the present invention, and FIG. 2 is a diagram showing the metal thermos bottle shown in FIG. 1 before the sealing opening is sealed. 3 is an enlarged view of the main part of the metal thermos flask shown in FIG. 2, and FIG. 4 is a schematic sectional view showing an example of the metal thermos flask obtained by the conventional method. FIG. 5 is a schematic sectional view showing the state of the exhaust port sealing surface of the metal thermos flask shown in FIG. 4. ! ...Inner bottle, 2...Outer bottle, 3...Exhaust port, 4...Gap, 6...Sealing plate, 7...Vacuum insulation part, 8...Sealing material , 9...Low-temperature reducing metal material.
Claims (4)
の空隙部を真空断熱層とした金属製魔法瓶を製造するに
あたり、いずれか一方に排気口を設けてなる内瓶と外瓶
とを口部で接合して二重構造とした後、上記排気口の周
部に封止材を介して封止板を載置し、これを真空加熱炉
で真空加熱処理して上記排気口より上記空隙部内を真空
排気し、真空断熱層を形成しつつ排気口を封止する金属
製魔法瓶の製造方法であって、 上記排気口周部を予め低温還元性金属材で形成せしめて
おくことを特徴とする金属製魔法瓶の製造方法(1) When manufacturing a metal thermos flask, which consists of a metal inner bottle and an outer bottle, and the gap between the inner and outer bottles is a vacuum insulation layer, the inner bottle and the outer bottle are provided with an exhaust port on either side. After joining the bottle and the bottle at the mouth to form a double structure, a sealing plate is placed around the exhaust port via a sealing material, and this is vacuum heated in a vacuum heating furnace to form the exhaust port. A method for manufacturing a metal thermos flask, which evacuates the inside of the cavity from the mouth and seals the exhaust port while forming a vacuum insulation layer, the peripheral part of the exhaust port being formed in advance with a low-temperature reducible metal material. A method for manufacturing a metal thermos flask characterized by
の空隙部を真空断熱層とした金属製魔法瓶を製造するに
あたり、いずれか一方に排気口を設けてなる内瓶と外瓶
とを口部で接合して二重構造とした後、上記排気口の周
部に封止材を介して封止板を載置し、これを真空加熱炉
で真空加熱処理して上記排気口より上記空隙部内を真空
排気し、真空断熱層を形成しつつ排気口を封止する金属
製魔法瓶の製造方法であって、 上記封止板に低温還元性金属材を用いることを特徴とす
る金属製魔法瓶の製造方法(2) When manufacturing a metal thermos flask, which consists of an inner bottle and an outer metal bottle, and the gap between the inner and outer bottles is a vacuum insulation layer, the inner bottle and the outer bottle are provided with an exhaust port on either side. After joining the bottle and the bottle at the mouth to form a double structure, a sealing plate is placed around the exhaust port via a sealing material, and this is vacuum heated in a vacuum heating furnace to form the exhaust port. A method for manufacturing a metal thermos flask, which evacuates the inside of the cavity from the spout and seals the exhaust port while forming a vacuum insulation layer, characterized in that the sealing plate is made of a low-temperature reducing metal material. How to manufacture metal thermos flasks
とを特徴とする請求項１または請求項２記載の金属製魔
法瓶の製造方法(3) The method for manufacturing a metal thermos flask according to claim 1 or 2, wherein the metal outer bottle is made of titanium or a titanium alloy.
た１種あるいはこれらの合金であることを特徴とする請
求項１または請求項２記載の金属製魔法瓶の製造方法(4) The method for manufacturing a metal thermos flask according to claim 1 or claim 2, wherein the low-temperature reducing metal material is one selected from iron, copper, and nickel, or an alloy thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3726589A JP2818430B2 (en) | 1989-02-16 | 1989-02-16 | Manufacturing method of metal thermos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3726589A JP2818430B2 (en) | 1989-02-16 | 1989-02-16 | Manufacturing method of metal thermos |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02215416A true JPH02215416A (en) | 1990-08-28 |
| JP2818430B2 JP2818430B2 (en) | 1998-10-30 |
Family
ID=12492837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3726589A Expired - Fee Related JP2818430B2 (en) | 1989-02-16 | 1989-02-16 | Manufacturing method of metal thermos |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2818430B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597773A1 (en) * | 1992-11-12 | 1994-05-18 | Nippon Sanso Corporation | Metallic evacuated double-walled vessel and production method therefor |
| WO2002099331A2 (en) * | 2001-01-17 | 2002-12-12 | Superconductor Technologies, Inc. | Evacuation port and closure for dewars |
| KR200470800Y1 (en) * | 2012-05-21 | 2014-01-14 | 유춘희 | Cylinder structure of vertical type steam humidifier making use of electrodes |
-
1989
- 1989-02-16 JP JP3726589A patent/JP2818430B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597773A1 (en) * | 1992-11-12 | 1994-05-18 | Nippon Sanso Corporation | Metallic evacuated double-walled vessel and production method therefor |
| EP0755646A2 (en) * | 1992-11-12 | 1997-01-29 | Nippon Sanso Corporation | Metallic evacuated double-walled vessel and production method therefor |
| EP0755646A3 (en) * | 1992-11-12 | 1997-06-11 | Nippon Oxygen Co Ltd | Metallic evacuated double-walled vessel and production method therefor |
| WO2002099331A2 (en) * | 2001-01-17 | 2002-12-12 | Superconductor Technologies, Inc. | Evacuation port and closure for dewars |
| WO2002099331A3 (en) * | 2001-01-17 | 2003-07-17 | Superconductor Tech | Evacuation port and closure for dewars |
| KR200470800Y1 (en) * | 2012-05-21 | 2014-01-14 | 유춘희 | Cylinder structure of vertical type steam humidifier making use of electrodes |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2818430B2 (en) | 1998-10-30 |
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