JPH04220552A - Forming apparatus for low temperature environment - Google Patents
Forming apparatus for low temperature environmentInfo
- Publication number
- JPH04220552A JPH04220552A JP40448990A JP40448990A JPH04220552A JP H04220552 A JPH04220552 A JP H04220552A JP 40448990 A JP40448990 A JP 40448990A JP 40448990 A JP40448990 A JP 40448990A JP H04220552 A JPH04220552 A JP H04220552A
- Authority
- JP
- Japan
- Prior art keywords
- low
- temperature
- sample
- container
- liquid nitrogen
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 49
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 17
- 238000009835 boiling Methods 0.000 claims description 11
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【０００１】0001
【産業上の利用分野】本発明は、低温環境形成装置に係
り、特に、液体窒素の沸点効果によって得られる低温を
利用して低温雰囲気を形成するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature environment forming apparatus, and more particularly, to a low-temperature environment forming apparatus that utilizes the low temperature obtained by the boiling point effect of liquid nitrogen.
【０００２】0002
【従来の技術】低温環境形成装置は、試料を低温環境内
に収容して低温特性を測定する場合に使用される。2. Description of the Related Art A low-temperature environment forming apparatus is used to store a sample in a low-temperature environment and measure its low-temperature characteristics.
【０００３】該低温環境形成装置の内部を低温状態とす
る方法としては、液体ヘリウムや液体窒素の潜熱を利用
してこれらの沸点温度近傍の低温環境を形成することが
行われている。[0003] As a method for bringing the inside of the low-temperature environment forming device into a low-temperature state, the latent heat of liquid helium or liquid nitrogen is used to create a low-temperature environment near the boiling point temperature of these liquid helium or liquid nitrogen.
【０００４】0004
【発明が解決しようとする課題】しかし、液体ヘリウム
は、高価でかつ取り扱いが複雑であり、かつ、液体窒素
によって低温を得る場合には、液体窒素の沸点が７７Ｋ
であることから、これよりも低い温度を得ることができ
ないという難点がある。[Problems to be Solved by the Invention] However, liquid helium is expensive and complicated to handle, and when obtaining a low temperature with liquid nitrogen, the boiling point of liquid nitrogen is 77K.
Therefore, it is difficult to obtain a temperature lower than this.
【０００５】本発明は、このような事情に鑑みてなされ
たもので、液体窒素の沸点より低い温度の低温環境を安
価な液体窒素によって得ることを目的としている。[0005] The present invention was made in view of the above circumstances, and an object of the present invention is to obtain a low-temperature environment with a temperature lower than the boiling point of liquid nitrogen using inexpensive liquid nitrogen.
【０００６】[0006]
【課題を解決するための手段】かかる課題を解決するた
め、液体窒素が貯留される低温容器と、該低温容器の内
部気体を吸引して減圧雰囲気とする排気ポンプと、低温
容器の内部に挿入され窒素より沸点の低い伝熱ガスが満
たされるサンプル収納容器と、該サンプル収納容器の内
部に抜き差し可能に挿入されその先端に試料が取り付け
られる試料保持手段とを具備する構成の低温環境形成装
置としている。[Means for Solving the Problem] In order to solve this problem, we have provided a low-temperature container in which liquid nitrogen is stored, an exhaust pump that sucks the internal gas of the low-temperature container to create a reduced pressure atmosphere, and an exhaust pump that is inserted into the inside of the low-temperature container. A low-temperature environment forming device comprising: a sample storage container filled with a heat transfer gas having a boiling point lower than that of nitrogen; and a sample holding means that is removably inserted into the sample storage container and has a sample attached to its tip. There is.
【０００７】[0007]
【作用】液体窒素を収納している低温容器を真空状態の
近傍まで減圧すると、約６３Ｋの温度が得られるように
なり、低温容器の内部に挿入されているサンプル収納容
器の冷却が促進され、また、伝熱ガスを介して試料の吸
熱がなされ、試料が約６３Ｋまで冷却される。試料保持
手段を抜き差ししてその位置を変更することによって、
試料の環境温度が変化させられる。[Function] When the low temperature container containing liquid nitrogen is depressurized to near vacuum state, a temperature of approximately 63K can be obtained, which accelerates the cooling of the sample storage container inserted inside the low temperature container. Also, heat is absorbed from the sample through the heat transfer gas, and the sample is cooled to about 63K. By inserting and removing the sample holding means and changing its position,
The ambient temperature of the sample is changed.
【０００８】[0008]
【実施例】以下、第１図に基づいて本発明に係る低温環
境形成装置の一実施例を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the low temperature environment forming apparatus according to the present invention will be described below with reference to FIG.
【０００９】第１図において、符号１は低温容器、２は
排気ポンプ、３はサンプル収納容器、４は試料保持手段
である。In FIG. 1, reference numeral 1 is a low temperature container, 2 is an exhaust pump, 3 is a sample storage container, and 4 is a sample holding means.
【００１０】前記低温容器１は、その内部に適量の液体
窒素Ｒが貯留される。[0010] The cryogenic container 1 stores an appropriate amount of liquid nitrogen R therein.
【００１１】前記排気ポンプ２は、低温容器１に排気管
５を介して接続され、その内部気体である窒素ガスを吸
引することによって、真空に近い例えば１００分の１気
圧程度まで低温容器１の内部を減圧雰囲気とするもので
あり、排気管５の途中には圧力計６が設けられている。The exhaust pump 2 is connected to the low-temperature container 1 through an exhaust pipe 5, and pumps the low-temperature container 1 to a level close to vacuum, for example, about 1/100 atmospheric pressure, by sucking nitrogen gas, which is the internal gas. A reduced pressure atmosphere is created inside the exhaust pipe 5, and a pressure gauge 6 is provided in the middle of the exhaust pipe 5.
【００１２】前記サンプル収納容器３は、低温容器１の
口部にシール部７を介して気密状態に、かつ、上下移動
可能に組み合わせられて、先端 （下端）が低温容器１
の内部の液体窒素Ｒに没するまで挿入可能とされ、また
、その内部が伝熱ガス供給源８に接続され、窒素より沸
点の低い伝熱ガス （例えばヘリウムガス）が満たされ
る。The sample storage container 3 is attached to the mouth of the cryocontainer 1 through a seal 7 in an airtight manner and movable up and down, so that the tip (lower end) is connected to the cryocontainer 1.
It can be inserted until it is immersed in the liquid nitrogen R inside it, and its inside is connected to a heat transfer gas supply source 8, and is filled with a heat transfer gas (for example, helium gas) having a lower boiling point than nitrogen.
【００１３】前記試料保持手段４は、サンプル収納容器
３に対して抜き差し可能にかつシール部７を介して気密
状態に挿入され、その先端 （下端）に試料Ｓを取り付
けて熱伝達を行うためのヒートシンク９が設けられ、該
ヒートシンク９の上部にサンプル収納容器３との間の熱
伝達を妨げる断熱材１０が配される。そして、試料保持
手段４には、各種ケーブル等を介して低温物性測定装置
１１が接続される。The sample holding means 4 is inserted into and removed from the sample storage container 3 in an airtight manner via a sealing portion 7, and has a sample S attached to its tip (lower end) for heat transfer. A heat sink 9 is provided, and a heat insulating material 10 is disposed above the heat sink 9 to prevent heat transfer with the sample storage container 3. A low temperature physical property measuring device 11 is connected to the sample holding means 4 via various cables and the like.
【００１４】このような低温環境形成装置であると、低
温容器１の中に液体窒素Ｒを収納しておいて、排気ポン
プ２及び伝熱ガス供給源８を作動させ、低温容器１の減
圧及びサンプル収納容器３への伝熱ガス供給を行う。In such a low-temperature environment forming device, liquid nitrogen R is stored in the low-temperature container 1, and the exhaust pump 2 and heat transfer gas supply source 8 are operated to reduce the pressure in the low-temperature container 1 and Heat transfer gas is supplied to the sample storage container 3.
【００１５】低温容器１を真空状態の近傍、例えば大気
圧の１００分の１程度まで減圧すると、低温容器１の内
部温度が液体窒素の沸点約６３Ｋまで低下する。このた
め、ヒートシンク９及び伝熱ガスを介して、サンプル収
納容器３の内部の吸熱がなされ、試料保持手段４に取り
付けられた試料Ｓの環境が、目的とする低温に設定され
る。When the pressure of the low-temperature container 1 is reduced to near a vacuum state, for example, to about 1/100 of atmospheric pressure, the internal temperature of the low-temperature container 1 drops to about 63K, the boiling point of liquid nitrogen. Therefore, heat is absorbed inside the sample storage container 3 via the heat sink 9 and the heat transfer gas, and the environment of the sample S attached to the sample holding means 4 is set to the desired low temperature.
【００１６】試料保持手段４を抜き差しすることによっ
て、サンプル収納容器３の内部における試料Ｓの位置を
変えると、外部から低温容器１の内部への熱伝達状態が
、液体窒素Ｒの液位の位置との関係、熱伝達路の長さ、
断熱材１０の存在等によって変化するために、試料Ｓの
環境を目的とする温度に調整することができる。When the position of the sample S inside the sample storage container 3 is changed by inserting and removing the sample holding means 4, the state of heat transfer from the outside to the inside of the low temperature container 1 changes to the position of the liquid nitrogen R. relationship, length of heat transfer path,
Since the temperature changes depending on the presence of the heat insulating material 10, etc., the environment of the sample S can be adjusted to a desired temperature.
【００１７】なお、窒素より沸点の低い伝熱ガスとして
、前述したヘリウムガス以外に水素ガスを使用すること
も可能である。[0017] In addition to the aforementioned helium gas, it is also possible to use hydrogen gas as a heat transfer gas having a boiling point lower than that of nitrogen.
【００１８】[0018]
【発明の効果】以上説明したように、本発明に係る低温
環境形成装置によれば、以下に述べるような効果を奏す
る。（１） 液体窒素を収納する低温容器の内部気体
を吸引して減圧雰囲気とし、低温容器の内部に挿入され
た液体窒素の沸点効果によって低温を発生させ、低い伝
熱ガスが満たされるサンプル収納容器に挿入された試料
保持手段に取り付けた試料を冷却するものであるから、
液体窒素を真空圧に近づけることによって、大気圧雰囲
気における液体窒素の沸点７７Ｋより下の低温環境を容
易にかつ経済的に形成することができる。（２） ま
た、試料保持手段をサンプル収納容器に対して抜き差し
することによって、試料を広範囲の環境温度で任意に計
測することができる。[Effects of the Invention] As explained above, the low temperature environment forming apparatus according to the present invention provides the following effects. (1) A sample storage container that sucks the internal gas of a low-temperature container containing liquid nitrogen to create a reduced pressure atmosphere, generates a low temperature by the boiling point effect of the liquid nitrogen inserted into the low-temperature container, and is filled with a low heat transfer gas. It cools the sample attached to the sample holding means inserted into the
By bringing liquid nitrogen close to vacuum pressure, a low-temperature environment below the boiling point of 77K of liquid nitrogen in an atmospheric pressure atmosphere can be easily and economically created. (2) Furthermore, by inserting and removing the sample holding means into and out of the sample storage container, the sample can be arbitrarily measured at a wide range of environmental temperatures.
【図１】本発明に係る低温環境形成装置の一実施例を示
す正断面図である。FIG. 1 is a front cross-sectional view showing an embodiment of a low-temperature environment forming apparatus according to the present invention.
１ 低温容器 ２ 排気ポンプ ３ サンプル収納容器 ４ 試料保持手段 ５ 排気管 ６ 圧力計 ７ シール部 ８ 伝熱ガス供給源 ９ ヒートシンク １０ 断熱材 １１ 低温物性測定装置 Ｒ 液体窒素 Ｓ 試料 1 Low temperature container 2 Exhaust pump 3 Sample storage container 4 Sample holding means 5 Exhaust pipe 6 Pressure gauge 7 Seal part 8 Heat transfer gas supply source 9 Heat sink 10 Insulation material 11 Low temperature physical property measuring device R Liquid nitrogen S sample
Claims (1)
温容器の内部気体を吸引して減圧雰囲気とする排気ポン
プと、低温容器の内部に挿入され窒素より沸点の低い伝
熱ガスが満たされるサンプル収納容器と、該サンプル収
納容器の内部に抜き差し可能に挿入されその先端に試料
が取り付けられる試料保持手段とを具備することを特徴
とする低温環境形成装置。[Claim] A low-temperature container in which liquid nitrogen is stored, an exhaust pump that sucks the internal gas of the low-temperature container to create a reduced pressure atmosphere, and a heat transfer gas inserted into the low-temperature container and having a boiling point lower than that of nitrogen is filled. A low-temperature environment forming device comprising a sample storage container and a sample holding means that is removably inserted into the sample storage container and has a sample attached to its tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40448990A JPH04220552A (en) | 1990-12-20 | 1990-12-20 | Forming apparatus for low temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40448990A JPH04220552A (en) | 1990-12-20 | 1990-12-20 | Forming apparatus for low temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04220552A true JPH04220552A (en) | 1992-08-11 |
Family
ID=18514158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40448990A Pending JPH04220552A (en) | 1990-12-20 | 1990-12-20 | Forming apparatus for low temperature environment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04220552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167487A (en) * | 2014-05-07 | 2014-09-11 | Neturen Co Ltd | Cooling liquid management method |
-
1990
- 1990-12-20 JP JP40448990A patent/JPH04220552A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014167487A (en) * | 2014-05-07 | 2014-09-11 | Neturen Co Ltd | Cooling liquid management method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19990330 |