JPH04134256A - Heating furnace for thermal analysis device - Google Patents
Heating furnace for thermal analysis deviceInfo
- Publication number
- JPH04134256A JPH04134256A JP25988990A JP25988990A JPH04134256A JP H04134256 A JPH04134256 A JP H04134256A JP 25988990 A JP25988990 A JP 25988990A JP 25988990 A JP25988990 A JP 25988990A JP H04134256 A JPH04134256 A JP H04134256A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heating furnace
- liquid level
- tank
- amount
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 43
- 238000002076 thermal analysis method Methods 0.000 title claims description 5
- 239000003507 refrigerant Substances 0.000 claims abstract description 77
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000930 thermomechanical effect Effects 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 102000016941 Rho Guanine Nucleotide Exchange Factors Human genes 0.000 description 1
- 108010053823 Rho Guanine Nucleotide Exchange Factors Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、試料を加熱し適当な荷重を加えてその熱的
変化に伴う効果を測定する熱機械分析装置や試料を加熱
し試料重量の変化を測定する熱重量測定装置等で用いら
れる熱分析装置の加熱炉に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a thermomechanical analyzer that heats a sample, applies an appropriate load, and measures the effect accompanying the thermal change; The present invention relates to a heating furnace for a thermal analysis device used in a thermogravimetric measurement device that measures changes.
従来、熱分析装置を用いて測定試料を低温領域（氷点下
−１００°Ｃ以下）まで冷却する場合には、第２図に示
すように、ヒータ線を巻装し試料を挿入した加熱炉２１
全体を別個の液体窒素（Ｎ２）等の冷媒を入れた冷媒［
２３で覆い、この冷媒槽２３によってシールドカバー２
２を介して加熱炉２１を間接的に冷却するか、若しくは
気化した冷媒の低温気体を加熱炉２１に吹きつけて冷却
するという方法が用いられていた。Conventionally, when using a thermal analyzer to cool a measurement sample to a low temperature range (below -100°C), as shown in Fig. 2, a heating furnace 21 in which a heater wire is wound and a sample is inserted is used.
A refrigerant containing a separate refrigerant such as liquid nitrogen (N2) [
23, and the shield cover 2 is covered by this refrigerant tank 23.
A method has been used in which the heating furnace 21 is indirectly cooled through the heating furnace 2, or the heating furnace 21 is cooled by blowing low-temperature gas of a vaporized refrigerant onto the heating furnace 21.
上記するように、加熱炉全体を冷媒槽によって間接的に
冷却する方法では大容量の槽が必要となり装置全体が大
きくなると共に使用する冷媒も大量に必要でありコスト
高となる。また、気化した低温気体を加熱炉に吹きつけ
る方法では気化することによる温度上昇によって冷却能
力も低下し測定精度も悪くなる。この発明はかかる課題
を解決するためになされたものである。As described above, the method of indirectly cooling the entire heating furnace with a refrigerant tank requires a large-capacity tank, which increases the size of the entire apparatus and requires a large amount of refrigerant, resulting in high costs. Furthermore, in the method of blowing vaporized low-temperature gas into a heating furnace, the temperature rise due to vaporization lowers the cooling capacity and the measurement accuracy deteriorates. This invention has been made to solve this problem.
即ち、上記する課題を解決するためにこの発明２こかか
る熱分析用加熱炉は、炉内部うこ測定試料を設置し周囲
にはヒータ線を巻装しシールドカバ等で覆った加熱炉本
体と、前記加熱炉本体を覆う外側カバー等に取付けられ
槽内部に前記加熱炉本体の下部のみを冷却する冷媒を入
れた冷媒槽と、前記冷媒槽内の液面に設置され冷媒の液
面レベルが一定レベル以下になると冷媒タンクより供給
管を介して前記冷媒槽内に冷媒を供給するように設置さ
れた液面センサと、より成ることを特徴とする。That is, in order to solve the above-mentioned problems, the heating furnace for thermal analysis according to the present invention 2 has a heating furnace main body in which a sample to be measured for scale inside the furnace is installed, a heater wire is wound around the furnace body, and the main body is covered with a shield cover or the like. A refrigerant tank that is attached to an outer cover or the like that covers the heating furnace main body and contains a refrigerant inside the tank that cools only the lower part of the heating furnace main body, and a refrigerant tank that is installed on the liquid level in the refrigerant tank so that the liquid level of the refrigerant is constant. It is characterized by comprising a liquid level sensor installed to supply refrigerant from a refrigerant tank to the refrigerant tank via a supply pipe when the temperature drops below the level.
この発明にかかる熱分析装置用加熱炉を上記手段とすれ
ば次のように作用する。即ち、添付図の符号を参照して
説明すると、加熱炉本体１は下部の冷媒槽５に浸けた冷
媒６による熱伝導で冷却される。また前記冷媒槽５内の
冷媒の一部の気化による低温気体が上昇して加熱炉本体
１外周部を冷却し、冷媒槽５による冷媒の冷却と合わせ
て加熱炉本体１を効率良く冷却する。更に、冷媒槽５内
の冷媒量は液面センサ１１によってその液面レベルを常
に監視され、気化した量の分は直ちに冷媒タンクから補
給するようにしているので冷媒量は安定し且つ安定した
試料測定が可能となる。If the heating furnace for a thermal analyzer according to the present invention is used as the above means, it will function as follows. That is, to explain with reference to the reference numerals in the attached drawings, the heating furnace main body 1 is cooled by heat conduction by a refrigerant 6 immersed in a lower refrigerant tank 5. In addition, low-temperature gas due to the vaporization of a part of the refrigerant in the refrigerant tank 5 rises and cools the outer circumference of the heating furnace main body 1, and together with the cooling of the refrigerant by the refrigerant tank 5, the heating furnace main body 1 is efficiently cooled. Furthermore, the liquid level of the refrigerant in the refrigerant tank 5 is constantly monitored by the liquid level sensor 11, and the vaporized amount is immediately replenished from the refrigerant tank, so that the refrigerant amount is stable and a stable sample can be obtained. Measurement becomes possible.
以下、この発明の具体的実施例について図面を参照して
説明する。Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第１図はこの発明にかかる熱分析装置用加熱炉とその周
囲の断面図である。１は加熱炉本体であって周囲にはヒ
ータ線２が巻装してあり高温測定の場合には該ヒータ線
２により加熱する。測定試料は加熱炉本体内のほぼ中心
、即ちヒータ線２の中心付近である０部に設置される。FIG. 1 is a sectional view of a heating furnace for a thermal analyzer according to the present invention and its surroundings. Reference numeral 1 denotes a heating furnace main body, around which a heater wire 2 is wound.In the case of high temperature measurement, heating is performed by the heater wire 2. The measurement sample is placed approximately at the center of the heating furnace body, that is, at the 0 section near the center of the heater wire 2.
即ち、熱重量測定装置では吊線により試料皿が、熱機械
分析装置では試料支持管により試料台が０部付近にに設
置される。尚、該ヒータ線２の周囲はセラミック製ヒー
タカバー３で覆い、更に該ヒータカバー３の外側からシ
ールドカバー４で覆い、前記加熱炉本体１内の温度を安
定させるようにしである。That is, in a thermogravimetric measuring device, a sample dish is installed near 0 by a hanging wire, and in a thermomechanical analyzer, a sample stage is installed near 0 by a sample support tube. The heater wire 2 is surrounded by a ceramic heater cover 3, and is further covered with a shield cover 4 from the outside of the heater cover 3 to stabilize the temperature inside the heating furnace body 1.
５は冷媒槽であって内部に液体窒素等の冷媒６が入れで
ある。該冷媒槽５の冷媒６には前記加熱炉本体１の下部
のみが浸けられている。この冷媒槽５の最下部には中空
状のフェルール７が加熱炉本体１の外側に嵌められ金具
８で押さえられ固定されている。従って冷媒６が漏れる
ことはない。5 is a refrigerant tank in which a refrigerant 6 such as liquid nitrogen is placed. Only the lower part of the heating furnace body 1 is immersed in the refrigerant 6 of the refrigerant tank 5. At the lowest part of the refrigerant tank 5, a hollow ferrule 7 is fitted onto the outside of the heating furnace body 1 and is held and fixed by a metal fitting 8. Therefore, the refrigerant 6 will not leak.
また上記するように、冷媒６は前記加熱炉本体ｌの下部
のみに接触しており該加熱炉本体１内に漏れることはな
い。Further, as described above, the refrigerant 6 contacts only the lower part of the heating furnace main body 1 and does not leak into the heating furnace main body 1.
次に、前記冷媒槽５は外側カバー９にネジ止めされ、更
に冷媒タンク（図示せず）より供給管１０から供給され
るようになっている。冷媒６は回りとの温度差により一
部気化するが、この低温気体は冷媒槽５の上方へ流れ、
前記シールドカバー４内に入って前記加熱炉本体１の外
壁周囲を冷却する。また前記冷媒槽５内の冷媒は液面に
液面センサ１１が設置され、常にその量を監視されてい
る。即ち、該液面センサ１１により冷媒６の液面レベル
が一定レベル以下になると前記冷媒タンク（図示せず）
より冷媒が前記供給管１０を通じて冷媒槽５内に供給さ
れる。このように冷媒の量を常に一定に保つのは冷却温
度を安定させ、定常状態で試料の測定を行うためである
。Next, the refrigerant tank 5 is screwed to the outer cover 9, and is further supplied from a refrigerant tank (not shown) through a supply pipe 10. The refrigerant 6 partially vaporizes due to the temperature difference with its surroundings, but this low-temperature gas flows upward into the refrigerant tank 5.
It enters the shield cover 4 and cools the area around the outer wall of the heating furnace main body 1. Further, a liquid level sensor 11 is installed on the liquid level of the refrigerant in the refrigerant tank 5, and the amount of the refrigerant is constantly monitored. That is, when the liquid level of the refrigerant 6 becomes below a certain level by the liquid level sensor 11, the refrigerant tank (not shown)
The refrigerant is supplied into the refrigerant tank 5 through the supply pipe 10. The reason why the amount of refrigerant is always kept constant in this way is to stabilize the cooling temperature and measure the sample in a steady state.
この発明にかかる熱分析用加熱炉は以上のような構成か
らなる。The heating furnace for thermal analysis according to the present invention has the above configuration.
而して、加熱炉本体１は下部の冷媒槽５に浸けた冷媒６
による熱伝導で冷却され、また前記冷媒槽５内の冷媒の
一部の気化による低温気体が上昇して加熱炉本体１外周
部を冷却し、冷媒槽５による冷媒の冷却と合わせて加熱
炉本体１を効率良く冷却する。更に、冷媒槽５内の冷媒
量は液面センサ１１によってその液面レベルを常に監視
され、気化量分は直ちに冷媒タンク（図示せず）から補
給するようにしているので冷媒量は安定し且つ安定した
試料測定が可能となる。Thus, the heating furnace main body 1 has a refrigerant 6 immersed in the refrigerant tank 5 at the lower part.
In addition, low-temperature gas due to the vaporization of a part of the refrigerant in the refrigerant tank 5 rises and cools the outer peripheral part of the heating furnace main body 1. To efficiently cool 1. Furthermore, the liquid level of the refrigerant in the refrigerant tank 5 is constantly monitored by the liquid level sensor 11, and the vaporized amount is immediately replenished from the refrigerant tank (not shown), so that the refrigerant amount is stable and Stable sample measurement becomes possible.
この発明にかかる熱分析装置用加熱炉は以上詳述したよ
うな構成としたので、加熱炉本体の下部を冷媒で直接冷
却すると同時に測定試料の設置される加熱炉本体の上部
近傍を気化した冷媒の低温気体で冷却することにより、
比較的小容量の冷媒槽で冷却能力の優れた小型の熱重量
分析用或いは熱機械分析用の加熱炉を提供することが出
来る。Since the heating furnace for a thermal analyzer according to the present invention has the configuration described in detail above, the lower part of the heating furnace body is directly cooled with the refrigerant, and at the same time, the vaporized refrigerant is used in the vicinity of the upper part of the heating furnace body where the measurement sample is installed. By cooling with low temperature gas,
It is possible to provide a small-sized heating furnace for thermogravimetric analysis or thermomechanical analysis that has excellent cooling ability with a relatively small capacity refrigerant tank.
また使用する冷媒も少量で済むのでコストの低い経済的
な加熱炉を提供することが出来る。Further, since only a small amount of refrigerant is required, it is possible to provide an economical heating furnace at low cost.
第１図はこの発明にかかる熱分析装置用加熱炉とその周
囲の断面図、第２図は従来の熱分析装置用加熱炉とその
周囲の断面図である。
１−一加熱炉本体 ２−・ヒータ
４・−シールドカバー ５−冷媒槽 ６−冷媒９−外側
カバー １（１−冷媒供給管
１１−液面センサ
出願人 株式会社 島 津 製 作 所代理人 弁理士
河 崎 眞 樹
第
図
７− フェルール
８−一一一金具
１０−−−一供給管
１１・−液面センサFIG. 1 is a sectional view of a heating furnace for a thermal analyzer according to the present invention and its surroundings, and FIG. 2 is a sectional view of a conventional heating furnace for a thermal analyzer and its surroundings. 1--Heating furnace body 2--Heater 4--Shield cover 5-Refrigerant tank 6-Refrigerant 9-Outer cover 1 (1-Refrigerant supply pipe 11-Liquid level sensor Applicant Shimazu Corporation Manufacturing Agent Patent attorney Masaki Kawasaki Figure 7 - Ferrule 8 - 11 Metal fitting 10 - Supply pipe 11 - Liquid level sensor
Claims (1)
装しシールドカバー等で覆った加熱炉本体と、前記加熱
炉本体を覆う外側カバー等に取付けられ槽内部に前記加
熱炉本体の下部のみを冷却する冷媒を入れた冷媒槽と、
前記冷媒槽内の液面に設置され冷媒の液面レベルが一定
レベル以下になると冷媒タンクより供給管を介して前記
冷媒槽内に冷媒を供給するように設置された液面センサ
とより成ることを特徴とする熱分析装置用加熱炉。(1) A heating furnace body with a measurement sample placed inside the furnace, a heater wire wrapped around it, and covered with a shield cover, etc., and a heating furnace body attached to an outer cover, etc. that covers the heating furnace body and placed inside the tank. A refrigerant tank containing refrigerant that cools only the lower part of the
and a liquid level sensor installed on the liquid level in the refrigerant tank so as to supply refrigerant from the refrigerant tank to the refrigerant tank via a supply pipe when the liquid level of the refrigerant falls below a certain level. A heating furnace for thermal analysis equipment characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259889A JPH0795047B2 (en) | 1990-09-27 | 1990-09-27 | Heating furnace for thermal analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259889A JPH0795047B2 (en) | 1990-09-27 | 1990-09-27 | Heating furnace for thermal analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04134256A true JPH04134256A (en) | 1992-05-08 |
| JPH0795047B2 JPH0795047B2 (en) | 1995-10-11 |
Family
ID=17340347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2259889A Expired - Fee Related JPH0795047B2 (en) | 1990-09-27 | 1990-09-27 | Heating furnace for thermal analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795047B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424744A (en) * | 2015-12-22 | 2016-03-23 | 欧优科学仪器南京有限公司 | Single-tray-structured high-temperature differential scanning calorimeter |
| CN113758969A (en) * | 2021-11-09 | 2021-12-07 | 山东国创风叶制造有限公司 | Casting temperature curve measuring device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6459047A (en) * | 1987-08-31 | 1989-03-06 | Rigaku Keisoku Kk | Thermal analysis sample cooler |
-
1990
- 1990-09-27 JP JP2259889A patent/JPH0795047B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6459047A (en) * | 1987-08-31 | 1989-03-06 | Rigaku Keisoku Kk | Thermal analysis sample cooler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424744A (en) * | 2015-12-22 | 2016-03-23 | 欧优科学仪器南京有限公司 | Single-tray-structured high-temperature differential scanning calorimeter |
| CN113758969A (en) * | 2021-11-09 | 2021-12-07 | 山东国创风叶制造有限公司 | Casting temperature curve measuring device |
| CN113758969B (en) * | 2021-11-09 | 2022-04-08 | 山东润博机械装备有限公司 | Casting temperature curve measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0795047B2 (en) | 1995-10-11 |
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