JP6458638B2 - Chromatograph oven and chromatograph using the same - Google Patents

Chromatograph oven and chromatograph using the same Download PDF

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JP6458638B2
JP6458638B2 JP2015103836A JP2015103836A JP6458638B2 JP 6458638 B2 JP6458638 B2 JP 6458638B2 JP 2015103836 A JP2015103836 A JP 2015103836A JP 2015103836 A JP2015103836 A JP 2015103836A JP 6458638 B2 JP6458638 B2 JP 6458638B2
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oven
main body
chromatograph
heat insulating
insulating material
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JP2016217912A (en
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龍太 渋谷
龍太 渋谷
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Shimadzu Corp
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    • 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

Description

本発明は、クロマトグラフ用オーブン及びそれを用いたクロマトグラフに関する。   The present invention relates to a chromatographic oven and a chromatograph using the same.

ガスクロマトグラフでは、試料が移動相に押されてカラムの入口端からカラム内に導入される。これにより、試料に含まれる各化合物は、カラム内を通過する間に時間軸方向に分離されて、カラムの出口端に到達することになる。このとき、試料を所定の温度でカラム内を通過させるために、オーブン内部にカラムを収容して、オーブン内部の温度（例えば４５０℃までの任意の温度）を調節することができるガスクロマトグラフが用いられている（例えば、特許文献１参照）。   In a gas chromatograph, a sample is pushed by a mobile phase and introduced into the column from the inlet end of the column. Thereby, each compound contained in the sample is separated in the time axis direction while passing through the column, and reaches the outlet end of the column. At this time, in order to pass the sample through the column at a predetermined temperature, a gas chromatograph that can accommodate the column in the oven and adjust the temperature inside the oven (eg, any temperature up to 450 ° C.) is used. (For example, refer to Patent Document 1).

ここで、図５は、従来のガスクロマトグラフの一例を示す概略構成図であり、図６は、図５に示すガスクロマトグラフの密閉状態でのＸＹ平面における断面図であり、図７は、図５に示すガスクロマトグラフの開放状態でのＸＹ平面における断面図であり、図８は、図５に示すガスクロマトグラフの密閉状態における正面図である。なお、地面に水平な一方向をＸ方向とし、地面に水平でＸ方向と垂直な方向をＹ方向とし、Ｘ方向とＹ方向とに垂直な方向をＺ方向とする。
ガスクロマトグラフ１０１は、空気循環方式のオーブン１１０と、オーブン１１０の上部に配置された試料導入部３１及び検出器３２と、カラム３０とを備える。 Here, FIG. 5 is a schematic configuration diagram showing an example of a conventional gas chromatograph, FIG. 6 is a cross-sectional view in the XY plane of the gas chromatograph shown in FIG. 5 in a sealed state, and FIG. FIG. 8 is a cross-sectional view in the XY plane of the gas chromatograph shown in FIG. 5, and FIG. 8 is a front view of the gas chromatograph shown in FIG. One direction horizontal to the ground is defined as an X direction, a direction horizontal to the ground and perpendicular to the X direction is defined as a Y direction, and a direction perpendicular to the X direction and the Y direction is defined as a Z direction.
The gas chromatograph 101 includes an air circulation type oven 110, a sample introduction unit 31 and a detector 32 disposed on the top of the oven 110, and a column 30.

オーブン１１０は、略立方体形状のオーブン本体部１１と、前面壁となる前面扉１２０と、ヒータ１２と、ファン１３とを備える。
オーブン本体部１１は、上面壁１１ａと下面壁１１ｂと背面壁１１ｃと左側壁１１ｄと右側壁１１ｅとを有する。そして、上面壁１１ａは、例えばグラスウール製で厚さ２０ｍｍの断熱材１４を２枚の金属板で挟んだ３層構造となっている。なお、他の壁面（下面壁１１ｂ、背面壁１１ｃ、左側壁１１ｄ、右側壁１１ｅ）も上面壁１１ａと同様の構成となっている。 The oven 110 includes an oven body 11 having a substantially cubic shape, a front door 120 serving as a front wall, a heater 12, and a fan 13.
The oven body 11 includes an upper wall 11a, a lower wall 11b, a back wall 11c, a left wall 11d, and a right wall 11e. The top wall 11a has a three-layer structure in which, for example, a heat insulating material 14 made of glass wool and having a thickness of 20 mm is sandwiched between two metal plates. The other wall surfaces (lower wall 11b, back wall 11c, left wall 11d, and right wall 11e) have the same configuration as the upper wall 11a.

前面扉１２０は、前面扉本体１２１と、前面扉本体１２１の内面に取り付けられた例えばグラスウール製で厚さ２０ｍｍの断熱材２２と、２個の板バネ（弾性体）１２５とを有する。そして、前面扉本体１２１の左部には、左側壁１１ｄの前部とＺ方向を回転軸とするように回転軸部材２３が形成されている。また、右側壁１１ｅの前部と前面扉本体１２１の右部とには、前面扉１２０を固定するための係合部材２４が形成されている。   The front door 120 includes a front door main body 121, a heat insulating material 22 made of, for example, glass wool and having a thickness of 20 mm, and two leaf springs (elastic bodies) 125 attached to the inner surface of the front door main body 121. A rotation shaft member 23 is formed on the left portion of the front door main body 121 so that the front portion of the left side wall 11d and the Z direction are the rotation axes. An engaging member 24 for fixing the front door 120 is formed at the front portion of the right side wall 11e and the right portion of the front door main body 121.

これにより、分析者等によって前面扉１２０の左部を回転軸として前面扉１２０が開かれることにより、オーブン本体部１１の内部空間が開放される（開放状態）。また、分析者等によって前面扉１２０の左部を回転軸として前面扉１２０が閉められ、前面扉１２０が係合部材２４で固定されることにより、オーブン本体部１１の内部空間が断熱材１４、２２で密閉される（密閉状態）。   As a result, an analyst or the like opens the front door 120 around the left portion of the front door 120 as a rotation axis, thereby opening the internal space of the oven body 11 (open state). Further, the front door 120 is closed with the left part of the front door 120 as a rotation axis by an analyst or the like, and the front door 120 is fixed by the engaging member 24, so that the internal space of the oven main body 11 is made of the heat insulating material 14, 22 (sealed state).

ヒータ１２とファン１３とは、オーブン本体部１１の内部空間に配置されており、オーブン本体部１１の内部空間の温度を調節する。
また、カラム３０の入口端は試料導入部３１と接続されるとともに、カラム３０の出口端は検出器３２と接続されており、カラム３０の中央部はオーブン本体部１１の内部空間に配置されている。そして、カラム３０の中央部の内部には微粒子等の充填剤が充填されており、試料がカラム３０内を通過する際には、各化合物と充填剤との相互作用により、カラム３０の出口端から順次排出される。 The heater 12 and the fan 13 are disposed in the internal space of the oven main body 11 and adjust the temperature of the internal space of the oven main body 11.
In addition, the inlet end of the column 30 is connected to the sample introduction part 31, the outlet end of the column 30 is connected to the detector 32, and the central part of the column 30 is arranged in the internal space of the oven main body 11. Yes. And the inside of the center part of the column 30 is filled with a filler such as fine particles, and when the sample passes through the column 30, the outlet end of the column 30 is caused by the interaction between each compound and the filler. Are discharged sequentially.

ところで、上述したオーブン１１０では、前面扉本体１２１の内面に板バネ１２５を介して断熱材２２が取り付けられており、密閉状態ではオーブン本体部１１の内部空間が断熱材１４、２２で密閉されるようになっている。
板バネ１２５は、例えば金属製で厚さ０．５ｍｍの板状体であり、ＹＺ平面となる左部と、ＹＺ平面となる右部と、左部と右部とから−Ｘ方向に所定距離となるＺＸ平面部を介してＹＺ平面となる中央部と有する。 Incidentally, in the oven 110 described above, the heat insulating material 22 is attached to the inner surface of the front door main body 121 via the leaf spring 125, and in the sealed state, the internal space of the oven main body 11 is sealed with the heat insulating materials 14 and 22. It is like that.
The leaf spring 125 is a plate-like body made of metal, for example, having a thickness of 0.5 mm, and is a predetermined distance in the −X direction from the left portion that becomes the YZ plane, the right portion that becomes the YZ plane, and the left portion and the right portion. And a central portion that becomes a YZ plane through a ZX plane portion.

そして、１個の板バネ１２５の左部は前面扉本体１２１の左上部にネジ２６で固定されているとともに、板バネ１２５の右部は前面扉本体１２１の右上部にネジ２６で固定されている。また、板バネ１２５の中央部内面には断熱材２２の上部がネジ２６で固定されている。
さらに、他の１個の板バネ１２５の左部は前面扉本体１２１の左下部にネジ２６で固定されているとともに、板バネ１２５の右部は前面扉本体１２１の右下部にネジ２６で固定されている。また、板バネ１２５の中央部内面には断熱材２２の下部がネジ２６で固定されている。 The left part of one leaf spring 125 is fixed to the upper left part of the front door body 121 with a screw 26, and the right part of the leaf spring 125 is fixed to the upper right part of the front door body 121 with a screw 26. Yes. Further, the upper portion of the heat insulating material 22 is fixed to the inner surface of the central portion of the leaf spring 125 with a screw 26.
Further, the left part of the other one leaf spring 125 is fixed to the lower left part of the front door body 121 with a screw 26, and the right part of the leaf spring 125 is fixed to the lower right part of the front door body 121 with a screw 26. Has been. Further, the lower part of the heat insulating material 22 is fixed to the inner surface of the central portion of the leaf spring 125 with a screw 26.

このようなオーブン１１０によれば、密閉状態では、断熱材２２がオーブン本体部１１の上面壁１１ａと下面壁１１ｂと左側壁１１ｄと右側壁１１ｅとの前面に対し板バネ１２５によってＸ方向に所定圧力（１０Ｎ）以上で押し付けられる。   According to such an oven 110, in a sealed state, the heat insulating material 22 is predetermined in the X direction by the leaf spring 125 with respect to the front surfaces of the upper surface wall 11a, the lower surface wall 11b, the left side wall 11d, and the right side wall 11e of the oven main body 11. Pressed at pressure (10N) or higher.

特開平１１−３２６３０１号公報JP-A-11-326301

しかしながら、上述したようなオーブン１１０では、密閉状態のオーブン本体部１１の内部空間に、何らかの原因で漏れた可燃性ガス（水素等）が充満して引火した際には、上昇したガス圧の退避場所が制限され、オーブン１１０の構成部品を飛散させるような大きな爆発が起こることがあった。
そこで、本発明は、オーブン本体部の内部空間の可燃性ガスに引火した場合に、ガス圧を減少させて爆発の規模を低減することができるクロマトグラフ用オーブン及びそれを用いたクロマトグラフを提供することを目的とする。 However, in the oven 110 as described above, when the internal space of the sealed oven main body 11 is filled with flammable gas (hydrogen or the like) leaked for some reason and ignited, the increased gas pressure is saved. The location was limited and a large explosion could occur that would scatter the components of the oven 110.
Accordingly, the present invention provides a chromatographic oven capable of reducing the gas pressure and reducing the scale of explosion when a flammable gas in the internal space of the oven main body ignites, and a chromatograph using the same. The purpose is to do.

上記課題を解決するためになされた本発明のクロマトグラフ用オーブンは、断熱性を有する器壁により内部空間が形成されたオーブン本体部と、前記内部空間を密閉するための開閉可能な扉とを備え、前記扉は、扉本体部と、当該扉本体部の内面に弾性体を介して取り付けられた断熱材とを有するクロマトグラフ用オーブンであって、前記弾性体は、閉扉時には前記断熱材が前記オーブン本体部の器壁に所定圧力で押し付けられるように前記弾性体が伸縮するとともに、前記オーブン本体部の圧力が前記所定圧力以上となった場合に前記断熱材が前記扉本体部の内面に向かって移動するように前記弾性体が伸縮するように形成されている。 The oven for chromatography of the present invention made in order to solve the above-mentioned problem comprises an oven main body portion in which an internal space is formed by a heat insulating wall, and an openable / closable door for sealing the internal space. wherein the door includes a door body portion, an oven for chromatography having a said door body portion inner surface insulation mounted via an elastic body member of said elastic body, said heat insulating material at the time of closing is The elastic body expands and contracts so as to be pressed against the wall of the oven main body with a predetermined pressure, and when the pressure of the oven main body exceeds the predetermined pressure, the heat insulating material is applied to the inner surface of the door main body. The elastic body is formed to expand and contract so as to move toward it.

ここで、「所定圧力」とは、設計者等によって予め決められた任意の数値であり、例えば、試料を測定する際に、断熱材によってオーブン本体部の内部空間が密閉される数値となり、具体的には１０Ｎ等となる。   Here, the “predetermined pressure” is an arbitrary numerical value determined in advance by a designer or the like. For example, when the sample is measured, the internal space of the oven main body is sealed by the heat insulating material. Specifically, it is 10N.

本発明のクロマトグラフ用オーブンによれば、オーブン本体部の内部空間に漏れた可燃性ガスに引火した場合でも、断熱材が弾性体の縮みしろだけ移動して、オーブン本体部の内部空間のガス圧を逃がすことができる。これにより爆発の規模を大幅に低減することができるとともに、爆発時にオーブンの構成部品が飛散しにくくなり、分析者等の使用時の安全性を向上させることができる。   According to the chromatographic oven of the present invention, even when the flammable gas leaking into the internal space of the oven main body ignites, the heat insulating material moves only by the shrinkage of the elastic body, and the gas in the internal space of the oven main body portion. The pressure can be relieved. As a result, the scale of the explosion can be greatly reduced, and the components of the oven are less likely to scatter during the explosion, thereby improving the safety when used by analysts.

（その他の課題を解決するための手段及び効果）
また、本発明のクロマトグラフ用オーブンにおいて、前記弾性体は、前記扉本体部の内面に向かって５ｍｍ以上縮むことが可能となっているようにしてもよい。
また、本発明のクロマトグラフ用オーブンにおいて、前記所定圧力は、１０Ｎであるようにしてもよい。 (Means and effects for solving other problems)
In the chromatographic oven of the present invention, the elastic body may be capable of shrinking by 5 mm or more toward the inner surface of the door main body.
In the chromatograph oven of the present invention, the predetermined pressure may be 10N.

また、本発明のクロマトグラフ用オーブンは、前記弾性体は、一端部と、他端部と、前記一端部と前記他端部とから第一所定距離で下がった後、前記第一所定距離より短い第二所定距離で上がった連結部を介した中央部と有する板バネであり、前記断熱材は、前記板バネの中央部の上面に取り付けられているようにしてもよい。
このような本発明のクロマトグラフ用オーブンは、断熱材がオーブン本体部の器壁に所定圧力以上で押し付けられ、かつ、弾性体は扉本体部の内面に向かって５ｍｍ以上縮むことが可能となるように形成しやすい。 Further, in the chromatographic oven according to the present invention, the elastic body is lowered at a first predetermined distance from one end, the other end, the one end and the other end, and then from the first predetermined distance. A leaf spring having a central portion via a connecting portion raised by a short second predetermined distance, and the heat insulating material may be attached to the upper surface of the central portion of the leaf spring.
In such a chromatographic oven according to the present invention, the heat insulating material is pressed against the wall of the oven main body at a predetermined pressure or more, and the elastic body can be contracted by 5 mm or more toward the inner surface of the door main body. So easy to form.

そして、本発明のクロマトグラフは、上述したようなクロマトグラフ用オーブンと、試料導入部と、検出器と、前記内部空間に配置され、前記試料導入部と前記検出器との間に接続されたカラムとを備えるようにしてもよい。   The chromatograph according to the present invention is arranged in the chromatograph oven, the sample introduction unit, the detector, and the internal space, and is connected between the sample introduction unit and the detector. And a column.

本発明のガスクロマトグラフの一実施形態を示す概略構成図。The schematic block diagram which shows one Embodiment of the gas chromatograph of this invention. 図１に示すガスクロマトグラフの密閉状態でのＸＹ平面における断面図。Sectional drawing in the XY plane in the sealing state of the gas chromatograph shown in FIG. 図２同様の開放状態を示す断面図。Sectional drawing which shows the open state similar to FIG. 図１に示すガスクロマトグラフの密閉状態での正面図。The front view in the sealed state of the gas chromatograph shown in FIG. 従来のガスクロマトグラフの一例を示す概略構成図。The schematic block diagram which shows an example of the conventional gas chromatograph. 図５に示すガスクロマトグラフの密閉状態でのＸＹ平面における断面図。Sectional drawing in the XY plane in the sealing state of the gas chromatograph shown in FIG. 図６同様の開放状態を示す断面図。Sectional drawing which shows the open state similar to FIG. 図５に示すガスクロマトグラフの密閉状態での正面図。The front view in the sealed state of the gas chromatograph shown in FIG.

以下、本発明の実施形態について図面を用いて説明する。なお、本発明は、以下に説明するような実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々の態様が含まれる。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and includes various modes without departing from the spirit of the present invention.

図１は、本発明のガスクロマトグラフの実施形態の一例を示す概略構成図であり、図２は、図１に示すガスクロマトグラフの密閉状態でのＸＹ平面における断面図であり、図３は、図１に示すガスクロマトグラフの開放状態でのＸＹ平面における断面図であり、図４は、図１に示すガスクロマトグラフの密閉状態における正面図である。なお、上述したガスクロマトグラフ１０１と同様のものについては同じ符号を付している。
ガスクロマトグラフ１は、空気循環方式のオーブン１０と、オーブン１０の上部に配置された試料導入部３１及び検出器３２と、カラム３０とを備える。 1 is a schematic configuration diagram illustrating an example of an embodiment of a gas chromatograph of the present invention, FIG. 2 is a cross-sectional view in an XY plane of the gas chromatograph illustrated in FIG. 1 in a sealed state, and FIG. FIG. 4 is a cross-sectional view in the XY plane of the gas chromatograph shown in FIG. 1, and FIG. 4 is a front view of the gas chromatograph shown in FIG. In addition, the same code | symbol is attached | subjected about the thing similar to the gas chromatograph 101 mentioned above.
The gas chromatograph 1 includes an air circulation type oven 10, a sample introduction unit 31 and a detector 32 arranged on the top of the oven 10, and a column 30.

オーブン１０は、略立方体形状のオーブン本体部１１と、前面壁となる前面扉２０と、ヒータ１２と、ファン１３とを備える。
オーブン本体部１１は、上面壁１１ａと下面壁１１ｂと背面壁１１ｃと左側壁１１ｄと右側壁１１ｅとを有する。 The oven 10 includes an oven body 11 having a substantially cubic shape, a front door 20 serving as a front wall, a heater 12, and a fan 13.
The oven body 11 includes an upper wall 11a, a lower wall 11b, a back wall 11c, a left wall 11d, and a right wall 11e.

前面扉２０は、前面扉本体２１と、２個の板バネ（弾性体）２５と、前面扉本体２１の内面に板バネ２５を介して取り付けられた例えばグラスウール製で厚さ２０ｍｍの断熱材２２とを有する。
そして、前面扉本体２１の左部には、左側壁１１ｄの前部とＺ方向を回転軸とするように回転軸部材２３が形成されている。また、右側壁１１ｅの前部と前面扉本体２１の右部とには、前面扉２０を固定するための係合部材２４が形成されている。 The front door 20 includes a front door main body 21, two leaf springs (elastic body) 25, and a heat insulating material 22 made of, for example, glass wool and attached to the inner surface of the front door main body 21 via the leaf spring 25. And have.
A rotation shaft member 23 is formed on the left portion of the front door body 21 so that the front portion of the left side wall 11d and the Z direction are the rotation axes. Further, an engaging member 24 for fixing the front door 20 is formed at the front portion of the right side wall 11e and the right portion of the front door main body 21.

板バネ２５は、例えば金属製で厚さ０．５ｍｍの板状体であり、ＹＺ平面となる左部と、ＹＺ平面となる右部と、左部と右部とから−Ｘ方向に第一所定距離となった後、Ｘ方向に第二所定距離となった連結部を介してＹＺ平面となる中央部と有する。
そして、１個の板バネ２５の左部は前面扉本体２１の左上部にネジ２６で固定されているとともに、板バネ２５の右部は前面扉本体２１の右上部にネジ２６で固定されている。また、板バネ２５の中央部内面には断熱材２２の上部がネジ２６で固定されている。
さらに、他の１個の板バネ２５の左部は前面扉本体２１の左下部にネジ２６で固定されているとともに、板バネ２５の右部は前面扉本体２１の右下部にネジ２６で固定されている。また、板バネ２５の中央部内面には断熱材２２の下部がネジ２６で固定されている。 The leaf spring 25 is a plate-like body made of, for example, metal and having a thickness of 0.5 mm. The leaf spring 25 is first in the −X direction from the left portion that is the YZ plane, the right portion that is the YZ plane, and the left and right portions. After the predetermined distance, it has a central portion that becomes a YZ plane through a connecting portion that is a second predetermined distance in the X direction.
The left part of one leaf spring 25 is fixed to the upper left part of the front door body 21 with a screw 26, and the right part of the leaf spring 25 is fixed to the upper right part of the front door body 21 with a screw 26. Yes. Further, the upper portion of the heat insulating material 22 is fixed to the inner surface of the central portion of the leaf spring 25 with a screw 26.
Furthermore, the left part of the other one leaf spring 25 is fixed to the lower left part of the front door body 21 with a screw 26, and the right part of the leaf spring 25 is fixed to the lower right part of the front door body 21 with a screw 26. Has been. Further, the lower part of the heat insulating material 22 is fixed to the inner surface of the central portion of the leaf spring 25 with a screw 26.

上記第二所定距離は、上記第一所定距離より短く設定されており、上記第一所定距離及び第二所定距離は、設計者等によって予め決められた任意の数値であって、例えば、上記弾性体が扉本体部の内面に向かって５ｍｍ以上縮むことが可能となるように決定されることが好ましく、１０ｍｍ以上縮むことが可能となるように決定されることがより好ましく、２５ｍｍ以上縮むことが可能となるように決定されることが特に好ましい。   The second predetermined distance is set shorter than the first predetermined distance, and the first predetermined distance and the second predetermined distance are arbitrary numerical values determined in advance by a designer or the like, for example, the elasticity It is preferable that the body is determined so that it can be contracted by 5 mm or more toward the inner surface of the door main body, and it is more preferable that the body is determined so that it can be contracted by 10 mm or more. It is particularly preferred that it is determined to be possible.

これにより、分析者等によって前面扉２０の左部を回転軸として前面扉２０が開かれることにより、オーブン本体部１１の内部空間が開放される（開放状態）。また、分析者等によって前面扉２０の左部を回転軸として前面扉２０が閉められ、前面扉２０が係合部材２４で固定されることにより、断熱材２２が上面壁１１ａの前面と下面壁１１ｂの前面と背面壁１１ｃの前面と左側壁１１ｄの前面と右側壁１１ｅの前面とに板バネ２５によってＸ方向に所定圧力（１０Ｎ）以上で押し付けられ、オーブン本体部１１の内部空間が断熱材１４、２２で密閉される（密閉状態）。さらに、オーブン本体部１１の内部空間に漏れた可燃性ガスに引火した際には、断熱材２２が−Ｘ方向に板バネ２５の縮みしろだけ移動し、オーブン本体部１１の内部空間の可燃性ガス（水素等）を逃がしてガス圧を下げることができる。   As a result, an analyst or the like opens the front door 20 around the left portion of the front door 20 as a rotation axis, thereby opening the internal space of the oven body 11 (open state). Further, the front door 20 is closed with the left portion of the front door 20 as a rotation axis by an analyst or the like, and the front door 20 is fixed by the engaging member 24, so that the heat insulating material 22 is connected to the front surface and the lower surface wall of the upper surface wall 11 a. The front surface of 11b, the front surface of the back wall 11c, the front surface of the left side wall 11d, and the front surface of the right side wall 11e are pressed by the leaf spring 25 in the X direction at a predetermined pressure (10N) or more, and the internal space of the oven body 11 is insulated. 14 and 22 (sealed state). Further, when the flammable gas leaked into the internal space of the oven main body 11 is ignited, the heat insulating material 22 moves in the −X direction by the contraction of the leaf spring 25, and the combustibility of the internal space of the oven main body 11 is reached. Gas (hydrogen etc.) can escape and gas pressure can be lowered.

以上のように、本発明のガスクロマトグラフ１によれば、ガス漏れ時の爆発の規模を大幅に低減することができるとともに、爆発時にオーブン１０の構成部品が飛散しにくくなり、分析者等の使用時の安全性を向上させることができる。   As described above, according to the gas chromatograph 1 of the present invention, the scale of the explosion at the time of gas leakage can be greatly reduced, and the components of the oven 10 are less likely to be scattered during the explosion. Safety at the time can be improved.

本発明は、例えばクロマトグラフ等に利用することができる。   The present invention can be used for chromatographs, for example.

１： ガスクロマトグラフ
１０： オーブン
１１： オーブン本体部
２０： 前面扉
２１： 扉本体部
２２： 断熱材
２５： 板バネ（弾性体） 1: Gas chromatograph 10: Oven 11: Oven main body 20: Front door 21: Door main body 22: Insulating material 25: Leaf spring (elastic body)

Claims (5)

断熱性を有する器壁により内部空間が形成されたオーブン本体部と、
前記内部空間を密閉するための開閉可能な扉とを備え、
前記扉は、扉本体部と、当該扉本体部の内面に弾性体を介して取り付けられた断熱材とを有するクロマトグラフ用オーブンであって、
前記弾性体は、閉扉時には前記断熱材が前記オーブン本体部の器壁に所定圧力で押し付けられるように前記弾性体が伸縮するとともに、前記オーブン本体部の圧力が前記所定圧力以上となった場合に前記断熱材が前記扉本体部の内面に向かって移動するように前記弾性体が伸縮することを特徴とするクロマトグラフ用オーブン。 An oven main body in which an internal space is formed by a wall having heat insulation properties;
An openable / closable door for sealing the internal space,
The door is a chromatographic oven having a door main body and a heat insulating material attached to the inner surface of the door main body via an elastic body ,
When the elastic body expands and contracts so that the heat insulating material is pressed against the wall of the oven main body portion with a predetermined pressure when the door is closed, and the pressure of the oven main body portion becomes equal to or higher than the predetermined pressure. The chromatograph oven , wherein the elastic body expands and contracts so that the heat insulating material moves toward the inner surface of the door main body . 前記弾性体は、前記扉本体部の内面に向かって５ｍｍ以上縮むことが可能となっていることを特徴とする請求項１に記載のクロマトグラフ用オーブン。   The chromatograph oven according to claim 1, wherein the elastic body can be shrunk by 5 mm or more toward an inner surface of the door main body. 前記所定圧力は、１０Ｎであることを特徴とする請求項１又は請求項２に記載のクロマトグラフ用オーブン。   The chromatograph oven according to claim 1 or 2, wherein the predetermined pressure is 10N. 前記弾性体は、一端部と、他端部と、前記一端部と前記他端部とから第一所定距離で下がった後、前記第一所定距離より短い第二所定距離で上がった連結部を介した中央部と有する板バネであり、
前記断熱材は、前記板バネの中央部の上面に取り付けられていることを特徴とする請求項２又は請求項３に記載のクロマトグラフ用オーブン。 The elastic body includes a first end portion, a second end portion, and a connecting portion that is lowered by a first predetermined distance from the first end portion and the other end portion, and is then raised by a second predetermined distance shorter than the first predetermined distance. A leaf spring with a central part
The chromatograph oven according to claim 2 or 3, wherein the heat insulating material is attached to an upper surface of a central portion of the leaf spring. 請求項１〜請求項４のいずれか１項に記載のクロマトグラフ用オーブンと、
試料導入部と、
検出器と、
前記内部空間に配置され、前記試料導入部と前記検出器との間に接続されたカラムとを備えることを特徴とするクロマトグラフ。 The oven for chromatography according to any one of claims 1 to 4,
A sample introduction unit;
A detector;
A chromatograph comprising a column disposed in the internal space and connected between the sample introduction unit and the detector.
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