JPH0587793A - Temperature-raising oven for gas chromatograph - Google Patents
Temperature-raising oven for gas chromatographInfo
- Publication number
- JPH0587793A JPH0587793A JP24999491A JP24999491A JPH0587793A JP H0587793 A JPH0587793 A JP H0587793A JP 24999491 A JP24999491 A JP 24999491A JP 24999491 A JP24999491 A JP 24999491A JP H0587793 A JPH0587793 A JP H0587793A
- Authority
- JP
- Japan
- Prior art keywords
- oven
- temperature
- internal
- air
- fan
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/30—Control of physical parameters of the fluid carrier of temperature
- G01N2030/3084—Control of physical parameters of the fluid carrier of temperature ovens
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガスクロマトグラフの
昇温オ―ブンに関し、更に詳しくは、石油精製工業や石
油化学工業の分野で、ガソリン、ナフサ、若しくは軽油
などの蒸溜性状を測定したりエチレングリコ―ル類のよ
うな高沸点液体を測定したりするのに使用されるプロセ
ス用ガスクロマトグラフに用いて好適なガスクロマトグ
ラフの昇温オ―ブンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature raising oven for a gas chromatograph, and more specifically, in the fields of the petroleum refining industry and petrochemical industry, for measuring the distillation properties of gasoline, naphtha, light oil, etc. The present invention relates to a gas chromatograph heating oven suitable for use in a process gas chromatograph used for measuring a high boiling point liquid such as ethylene glycol.
【０００２】[0002]
【従来の技術】図３はプロセス用ガスクロマトグラフな
どに従来から装着されているガスクロマトグラフ用昇温
オ―ブンの構成断面図であり、図中、１はガスクロマト
グラフ用昇温オ―ブンの外部オ―ブン、２は外部オ―ブ
ン１内に収容された内部オ―ブン、３は空気導入口４か
ら導入される空気を加熱するヒ―タ、５は空気導出口、
６は内部オ―ブン２内の温度を検出する温度センサ―、
７は例えば分離カラムでなるカラム、８は分析すべき試
料などを一定量採取する試料採取弁、９は例えば熱伝導
度検出器でなる検出器、１０は空気導出口５から排出さ
れる空気を冷却する冷却器である。2. Description of the Related Art FIG. 3 is a cross-sectional view of a gas chromatograph heating oven conventionally installed in a process gas chromatograph or the like. In the figure, 1 is the outside of the gas chromatograph heating oven. The oven 2, 2 is an internal oven housed in the external oven 1, 3 is a heater for heating the air introduced from the air inlet 4, 5 is an air outlet,
6 is a temperature sensor for detecting the temperature in the internal oven 2,
7 is, for example, a column composed of a separation column, 8 is a sample collection valve for collecting a certain amount of a sample to be analyzed, 9 is a detector such as a thermal conductivity detector, and 10 is air discharged from the air outlet 5. It is a cooler for cooling.
【０００３】このような構成からなる従来例において、
外部オ―ブン１の温度Ｔ1 は、図示しない外部オ―ブン
用ヒ―タと外部オ―ブン用温度センサなどによって一定
温度（例えば、１００゜Ｃ）に調節されている。また、
内部オ―ブン２の温度Ｔ2 は、例えば６０゜Ｃを基点と
して、一定速度（例えば毎分２０゜Ｃ）で例えば２００
゜Ｃまで昇温され、その温度での分析が終了した後、冷
却されて基点まで降温するようになっている。In the conventional example having such a structure,
The temperature T 1 of the external oven 1 is adjusted to a constant temperature (for example, 100 ° C.) by an external oven heater, an external oven temperature sensor and the like (not shown). Also,
The temperature T 2 of the internal oven 2 is, for example, 200 at a constant speed (for example, 20 ° C./min) with 60 ° C. as a base point.
After the temperature is raised to ° C and the analysis at that temperature is completed, it is cooled and the temperature is lowered to the base point.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、上記従来
例においては、昇温操作のために大量の空気（例えば、
毎分５０〜７０リットル）を空気導入口４から内部オ―
ブン２内に供給しなければならない上、その空気を加熱
するため大きな電力（例えば１１５ＶＡＣで１０〜１５
Ａ）を必要とする欠点があった。また、内部オ―ブン２
内の温度分布のバラツキも大きく（例えば５〜１０゜
Ｃ）、温度が不均一であるという欠点があった。However, in the above-mentioned conventional example, a large amount of air (for example,
(50 to 70 liters per minute) from the air inlet 4 to the inside
It has to be supplied to the bun 2 and has a large electric power to heat the air (for example, 10 to 15 at 115 VAC).
There was a drawback that required A). Also, the internal oven 2
There is also a drawback that the temperature distribution in the inside is large (for example, 5 to 10 ° C) and the temperature is non-uniform.
【０００５】本発明は、かかる従来例の欠点などに鑑み
てなされたものであり、その目的は、昇温時に外部から
の空気の供給が不要なうえ内部オ―ブン内の温度分布の
バラツキが小さいガスクロマトグラフ用昇温オ―ブンを
提供することにある。The present invention has been made in view of the drawbacks of the conventional example, and its purpose is to eliminate the need for supplying air from the outside when the temperature rises and to cause the variation in the temperature distribution in the internal oven. It is to provide a small heating oven for a gas chromatograph.
【０００６】[0006]
【課題を解決するための手段】本発明は、ガスクロマト
グラフの昇温オ―ブンにおいて、一定温度に温度調節さ
れた外部オ―ブン内に収容された内部オ―ブンと、該内
部オ―ブン内の空気を加熱するヒ―タと、内部オ―ブン
内の空気を撹拌するファンと、該ファンを回転するモ―
タと、内部オ―ブン内をカラム収納部分と前記ファンや
ヒ―タが収納されている部分に二分する網と、内部オ―
ブン内に冷却用空気を導入する管路を開閉する第１開閉
弁と、該冷却用空気を排出する管路に設けられた第２開
閉弁とを設け、内部オ―ブンの昇温時には開閉弁を閉じ
てヒ―タとファンで加熱し、内部オ―ブンの温度下降時
には開閉弁を開にして冷却用空気で内部オ―ブン内を空
冷することによって前記課題を解決したものである。DISCLOSURE OF THE INVENTION The present invention relates to an internal oven which is housed in an external oven whose temperature is adjusted to a constant temperature in a temperature-raising oven of a gas chromatograph, and the internal oven. A heater that heats the air inside, a fan that stirs the air inside the internal oven, and a motor that rotates the fan.
An internal oven, a net that divides the interior of the internal oven into a column storage part and a part that stores the fan and heater, and an internal oven.
A first opening / closing valve for opening and closing a pipe for introducing cooling air into the oven and a second opening / closing valve provided for a pipe for discharging the cooling air are provided to open and close when the temperature of the internal oven rises. The above problem is solved by closing the valve and heating with a heater and a fan, and when the temperature of the internal oven is lowered, the on-off valve is opened to cool the inside of the internal oven with cooling air.
【０００７】[0007]
【作用】本発明は次のように作用する。即ち、外部オ―
ブン内の温度Ｔ1 は、外部オ―ブン用ヒ―タと外部オ―
ブン用温度センサなどによって一定温度に調節される。
また、内部オ―ブン内の温度Ｔ2 は、温度Ｔb を基点と
して、時間ｔ1 から時間ｔ2 までの間一定速度で昇温さ
れて温度Ｔa となる。この時間ｔ1 から時間ｔ2 までの
間に所定の分析が行われる共に、温度Ｔa で時間ｔ2 か
ら時間ｔ3 までの間も所定の分析が行われることがあ
る。その後、開閉弁が開にされた状態で導入口から供給
されファンにより撹拌された空気によって時間ｔ3 から
時間ｔ4 の間冷却され、基点（温度Ｔb ）まで降温す
る。The present invention operates as follows. That is, outside
The temperature T 1 inside the oven is the same as the heater for the external oven and the external oven.
It is adjusted to a constant temperature by a temperature sensor for bun.
Further, the temperature T 2 in the internal oven is raised from the temperature T b as a base point at a constant rate from the time t 1 to the time t 2 to reach the temperature T a . The predetermined analysis may be performed from the time t 1 to the time t 2 , and the predetermined analysis may be performed at the temperature T a from the time t 2 to the time t 3 . After that, with the on-off valve opened, the air is supplied from the inlet and agitated by the fan to cool the air for a period from time t 3 to time t 4 and lower the temperature to the base point (temperature T b ).
【０００８】[0008]
【実施例】以下、本発明について図を用いて詳細に説明
する。図１は本発明実施例の構成断面図であり、図中、
図３と同一記号は同一意味を持たせて使用しここでの重
複説明は省略する。また、１１は内部オ―ブン２内の空
気を撹拌するファン、１２はファン１１を回転させるモ
―タ、１３は内部オ―ブン２内をカラム収納部分とファ
ン１１やヒ―タ３が収納されている部分に二分する網、
４は内部オ―ブン２を覆う断熱材、１５ａ，１５ｂは開
閉弁である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of the configuration of an embodiment of the present invention.
The same symbols as those in FIG. 3 are used with the same meanings, and the duplicate description is omitted here. Further, 11 is a fan that stirs air in the internal oven 2, 12 is a motor that rotates the fan 11, 13 is a column storage part in the internal oven 2, and the fan 11 and the heater 3 are stored. A net that divides into two parts,
Reference numeral 4 is a heat insulating material that covers the internal oven 2, and 15a and 15b are opening / closing valves.
【０００９】図２は、本発明実施例を用いて昇温操作を
行った場合の温度変化を示す温度特性図であり、図中、
横軸は時間ｔを示し縦軸は温度Ｔを示している。以下、
図１と図２を用いて本発明実施例の動作について詳しく
説明する。まず、図１のような構成からなる本発明の実
施例において、外部オ―ブン１内の温度Ｔ1 は、図示し
ない外部オ―ブン用ヒ―タと外部オ―ブン用温度センサ
などによって一定温度（例えば、１００゜Ｃ）に調節さ
れる。FIG. 2 is a temperature characteristic diagram showing a temperature change when a temperature raising operation is performed using the embodiment of the present invention.
The horizontal axis represents time t and the vertical axis represents temperature T. Less than,
The operation of the embodiment of the present invention will be described in detail with reference to FIGS. First, in the embodiment of the present invention having the configuration as shown in FIG. 1, the temperature T 1 in the external oven 1 is kept constant by an external oven heater, an external oven temperature sensor, etc. (not shown). Adjusted to temperature (eg 100 ° C).
【００１０】また、内部オ―ブン２内の温度Ｔ2 は、図
２に示すように、温度Ｔb(例えば６０゜Ｃ）を基点とし
て、時間ｔ1 から時間ｔ2 までの間一定速度（例えば毎
分５゜Ｃ）で昇温されて温度Ｔa （例えば２００゜Ｃ）
となる。この時間ｔ1 から時間ｔ2 までの間に所定の分
析が行われると共に、温度Ｔa で時間ｔ2 から時間ｔ3
までの間も所定の分析が行われることがある。その後、
図１の開閉弁１５ａ，１５ｂが開にされると、内部オ―
ブン２内は導入口４から供給されファン１１により撹拌
された空気によって時間ｔ3 から時間ｔ4 の間冷却さ
れ、基点（温度Ｔb ）まで降温する。尚、時間ｔ1 から
時間ｔ2 までの間においても、ファン１１は回転し続
け、ヒ―タ３によって加熱された空気を内部オ―ブン２
内に均一に分布させている。Further, as shown in FIG. 2, the temperature T 2 in the internal oven 2 is constant at a constant speed (from time t 1 to time t 2 ) with the temperature T b ( for example, 60 ° C.) as a base point. For example, the temperature is raised at 5 ° C./min to reach the temperature T a (for example, 200 ° C.)
Becomes A predetermined analysis is performed between the time t 1 and the time t 2 , and at the temperature Ta , the time t 2 to the time t 3
Predetermined analysis may be performed up to. afterwards,
When the on-off valves 15a and 15b shown in FIG.
The inside of the oven 2 is cooled from the time t 3 to the time t 4 by the air supplied from the inlet 4 and stirred by the fan 11, and the temperature is lowered to the base point (temperature T b ). The fan 11 continues to rotate during the period from the time t 1 to the time t 2 , and the air heated by the heater 3 is transferred to the internal oven 2.
It is evenly distributed inside.
【００１１】以上の動作は、時間ｔ5 から時間ｔ8 の間
においても同様に行われると共に、時間ｔ9 以降も繰り
返される。尚、本発明は図１の実施例に限定されること
なく種々の変形が可能であり、例えば、導入口４から供
給される空気に代えて安全性が高い窒素やアルゴンなど
の不活性ガスを用いても良いものとする。The above operation is similarly performed from time t 5 to time t 8 and is repeated after time t 9 . The present invention is not limited to the embodiment shown in FIG. 1, and various modifications can be made. For example, instead of the air supplied from the inlet 4, a highly safe inert gas such as nitrogen or argon can be used. It may be used.
【００１２】[0012]
【発明の効果】以上詳しく説明したような本発明によれ
ば、内部オ―ブンの昇温を内部オ―ブン内空気の撹拌に
よって行うような構成であるため、前記従来例に比し
て、内部オ―ブン内の温度分布のバラツキを少なくする
ことができるという利点がある。従って、本発明によれ
ば、繰返し再現性に優れた測定結果が得られるようにな
る。 また、導入口から内部オ―ブン内に供給される空
気の消費量も、前記従来例の場合に比して少なく、その
結果、電力消費量も前記従来例に比して少なくなるとい
う利点がある。According to the present invention as described in detail above, since the internal oven is heated by agitating the air in the internal oven, the internal oven is heated more than the conventional example. There is an advantage that it is possible to reduce variations in temperature distribution in the internal oven. Therefore, according to the present invention, it is possible to obtain a measurement result having excellent repeatability. Further, the amount of air supplied from the inlet into the internal oven is smaller than that of the conventional example, and as a result, the power consumption is also smaller than that of the conventional example. is there.
【図１】本発明実施例の構成断面図である。FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention.
【図２】温度特性図である。FIG. 2 is a temperature characteristic diagram.
【図３】従来例の構成断面図である。FIG. 3 is a configuration cross-sectional view of a conventional example.
１ 外部オ―ブン ２ 内部オ―ブン ３ ヒ―タ ７ カラム １１ ファン １２ モ―タ １３ 網 １４ 断熱材 １５ａ，１５ｂ 開閉弁 1 Outer oven 2 Inner oven 3 Heater 7 Column 11 Fan 12 Motor 13 Net 14 Thermal insulation 15a, 15b Open / close valve
Claims (1)
て、一定温度に温度調節された外部オ―ブン内に収容さ
れた内部オ―ブンと、該内部オ―ブン内の空気を加熱す
るヒ―タと、前記内部オ―ブン内の空気を撹拌するファ
ンと、該ファンを回転するモ―タと、前記内部オ―ブン
内をカラム収納部分と前記ファンやヒ―タが収納されて
いる部分に二分する網と、前記内部オ―ブン内に冷却用
空気を導入する管路を開閉する第１開閉弁と、該冷却用
空気を排出する管路に設けられた第２開閉弁とを具備
し、前記内部オ―ブンの昇温時には前記開閉弁を閉じて
前記ヒ―タとファンで加熱し、前記内部オ―ブンの温度
下降時には前記開閉弁を開にして前記冷却用空気で前記
内部オ―ブン内を空冷することを特徴とするガスクロマ
トグラフの昇温オ―ブン。1. In a heating oven of a gas chromatograph, an internal oven housed in an external oven whose temperature is adjusted to a constant temperature and a heater for heating air in the internal oven. A fan, a fan that stirs air in the internal oven, a motor that rotates the fan, a column storage portion in the internal oven, and a portion in which the fan and heater are stored. And a first opening / closing valve for opening and closing a pipe for introducing cooling air into the internal oven, and a second opening / closing valve provided for the pipe for discharging the cooling air. Then, when the temperature of the internal oven is raised, the on-off valve is closed and heated by the heater and the fan, and when the temperature of the internal oven is lowered, the on-off valve is opened and the internal air is cooled by the cooling air. Temperature increase of gas chromatograph characterized by air cooling inside oven Down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24999491A JPH0587793A (en) | 1991-09-30 | 1991-09-30 | Temperature-raising oven for gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24999491A JPH0587793A (en) | 1991-09-30 | 1991-09-30 | Temperature-raising oven for gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0587793A true JPH0587793A (en) | 1993-04-06 |
Family
ID=17201262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24999491A Pending JPH0587793A (en) | 1991-09-30 | 1991-09-30 | Temperature-raising oven for gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0587793A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6834531B2 (en) * | 2000-12-29 | 2004-12-28 | Christopher J. Rust | Gas chromatograph modular auxiliary oven assembly and method for analyzing a refinery gas |
| JP2007536520A (en) * | 2004-05-04 | 2007-12-13 | パーキンエルマー・エルエーエス・インコーポレーテッド | Chromatography oven with heat exchange function and usage |
| WO2008102872A1 (en) | 2007-02-23 | 2008-08-28 | Tosoh Corporation | Column oven with double temperature control |
| CN104101670A (en) * | 2013-04-02 | 2014-10-15 | 株式会社岛津制作所 | Column unit and gas chromatography device provided with the same |
| JP2018072048A (en) * | 2016-10-25 | 2018-05-10 | 株式会社システック | Explosion-proof constant temperature bath |
| WO2019058476A1 (en) * | 2017-09-21 | 2019-03-28 | 株式会社島津製作所 | Column oven |
| JPWO2020080404A1 (en) * | 2018-10-17 | 2021-09-02 | 株式会社島津製作所 | An online analysis system including a temperature control analyzer and the temperature control analyzer. |
-
1991
- 1991-09-30 JP JP24999491A patent/JPH0587793A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6834531B2 (en) * | 2000-12-29 | 2004-12-28 | Christopher J. Rust | Gas chromatograph modular auxiliary oven assembly and method for analyzing a refinery gas |
| JP2007536520A (en) * | 2004-05-04 | 2007-12-13 | パーキンエルマー・エルエーエス・インコーポレーテッド | Chromatography oven with heat exchange function and usage |
| WO2008102872A1 (en) | 2007-02-23 | 2008-08-28 | Tosoh Corporation | Column oven with double temperature control |
| JP5040990B2 (en) * | 2007-02-23 | 2012-10-03 | 東ソー株式会社 | Column oven double temperature control |
| US8319155B2 (en) | 2007-02-23 | 2012-11-27 | Tosoh Corporation | Column oven with double temperature control |
| CN104101670A (en) * | 2013-04-02 | 2014-10-15 | 株式会社岛津制作所 | Column unit and gas chromatography device provided with the same |
| US9194849B2 (en) | 2013-04-02 | 2015-11-24 | Shimadzu Corporation | Column unit and gas chromatography device provided with the same |
| JP2018072048A (en) * | 2016-10-25 | 2018-05-10 | 株式会社システック | Explosion-proof constant temperature bath |
| WO2019058476A1 (en) * | 2017-09-21 | 2019-03-28 | 株式会社島津製作所 | Column oven |
| JPWO2020080404A1 (en) * | 2018-10-17 | 2021-09-02 | 株式会社島津製作所 | An online analysis system including a temperature control analyzer and the temperature control analyzer. |
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