JPH06186218A - Internal-pressure explosion-proof type constant temperature oven - Google Patents
Internal-pressure explosion-proof type constant temperature ovenInfo
- Publication number
- JPH06186218A JPH06186218A JP4336129A JP33612992A JPH06186218A JP H06186218 A JPH06186218 A JP H06186218A JP 4336129 A JP4336129 A JP 4336129A JP 33612992 A JP33612992 A JP 33612992A JP H06186218 A JPH06186218 A JP H06186218A
- Authority
- JP
- Japan
- Prior art keywords
- container
- fan
- purge gas
- drive
- chamber
- 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
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
- Devices For Use In Laboratory Experiments (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プロセスガスクロマト
グラフに用いられる内圧防爆型恒温槽に係わり、特に内
圧防爆型恒温槽の温度調節機構の改善に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal pressure explosion-proof thermostatic chamber used in a process gas chromatograph, and more particularly to improvement of a temperature control mechanism of the internal pressure explosion-proof thermostatic chamber.
【０００２】[0002]
【従来の技術】プロセスガスクロマトグラフに用いら
れ、カラムや検出器等を収納する恒温槽には防爆構造の
ものが用いられ、耐圧防爆型と内圧防爆型がある。そし
て内圧防爆型のものは、不活性ガス又は空気を恒温槽内
に導入して恒温槽内のカラムや検出器等に導入される危
険ガスを内部からパージすることにより防爆させるもの
である。2. Description of the Related Art A constant temperature chamber used for a process gas chromatograph and having a column, a detector and the like has an explosion proof structure, and there are a pressure proof type and an internal pressure proof type. The internal pressure explosion-proof type is an explosion-proof type in which an inert gas or air is introduced into a constant temperature tank and a dangerous gas introduced into a column or a detector in the constant temperature tank is purged from the inside.
【０００３】従来の内圧防爆型恒温槽をエアバス式恒温
槽を例に取り図を用いて説明する。図３は、従来のエア
バス式恒温槽の構成を示す図である。図３において、内
圧防爆構造の容器１０の内部にカラム１１と加熱部１７
と温度センサ（図示しない）が収容され、この加熱部１
７内にはヒーター１２が収容されている。A conventional internal pressure explosion-proof thermostatic chamber will be described with reference to the drawings by taking an air bath thermostatic chamber as an example. FIG. 3 is a diagram showing a configuration of a conventional air bath type constant temperature bath. In FIG. 3, a column 11 and a heating unit 17 are provided inside a container 10 having an internal pressure explosion-proof structure.
And a temperature sensor (not shown) are housed in this heating unit 1.
A heater 12 is housed inside 7.
【０００４】カラム１１には被検出試料を検出器（図示
しない）に運ぶキャリアガスＧ３が導入される。そして
加熱部１７は容器１０の外部とパイプ１８を通じて連結
され、空気Ｇ４がパイプ１８を通じて外部から加熱部１
７内に送り込まれる。A carrier gas G3 for carrying a sample to be detected to a detector (not shown) is introduced into the column 11. The heating unit 17 is connected to the outside of the container 10 through the pipe 18, and the air G4 is supplied from the outside through the pipe 18 to the heating unit 1.
It is sent within 7.
【０００５】そして、温度センサは容器１０内部の温度
を検出し、その温度を容器１０の外部に設けられヒータ
ー１２に接続されたコントローラー（図示しない）にフ
ィードバックし、空気Ｇ４は、コントローラーの指示に
よって出力を制御されるヒーター１２によって加熱され
て容器１０内に放出され、容器１０に外部と通じて設け
られたパイプ１９より排気される。Then, the temperature sensor detects the temperature inside the container 10 and feeds back the temperature to a controller (not shown) provided outside the container 10 and connected to the heater 12, and the air G4 is instructed by the controller. It is heated by the heater 12 whose output is controlled, discharged into the container 10, and exhausted through a pipe 19 provided in the container 10 so as to communicate with the outside.
【０００６】エアバス式恒温槽はこのようにして、容器
１０内に引き込まれるガス（例えばキャリアガスＧ３や
検出器が容器１０内に収納される場合には検出器に導入
されるガスなど）が可燃性ガスであり容器１０内にリー
クした場合に、容器１０が爆発しないように容器１０内
の温度を一定に保持し、内圧を所定の圧力以上に保持す
るものである。In the air bath type constant temperature chamber, the gas drawn into the container 10 (for example, the carrier gas G3 or the gas introduced to the detector when the detector is housed in the container 10) is thus flammable. It is a volatile gas and keeps the temperature inside the container 10 constant so that the container 10 does not explode if it leaks into the container 10 and keeps the internal pressure above a predetermined pressure.
【０００７】[0007]
【発明が解決しようとする課題】このようなエアバス式
恒温槽は温度応答が良い為、カラム温度を予め定められ
た計画に従って時間と共に変化させる昇温分析が可能で
あるが、温度応答と、温度分布の均一性や温度の安定性
などの恒温槽の特性を維持する為には、多くの空気量を
必要とし、またその分ヒーター容量も大きく取る必要が
あり消費電力が大きくなるという問題点があった。本発
明は、従来の有するこのような問題点に鑑みてなされた
ものであり、その目的とするところは、恒温槽の特性を
維持する為のパージガスの消費量及びヒーターの消費電
力を削減した内圧防爆型恒温槽を提供することである。Since such an air bath type constant temperature bath has a good temperature response, it is possible to perform a temperature rise analysis in which the column temperature is changed with time according to a predetermined plan. In order to maintain the constant temperature bath characteristics such as distribution uniformity and temperature stability, a large amount of air is required, and the heater capacity needs to be increased accordingly, resulting in a large power consumption. there were. The present invention has been made in view of the above problems of the related art, and an object thereof is to reduce the internal pressure of the purge gas and the power consumption of the heater for maintaining the characteristics of the constant temperature bath. It is to provide an explosion-proof constant temperature bath.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項１においては、ヒーターを収納する
容器の内部に導入されるパージガスを前記ヒーターによ
って加熱して前記容器の外部に排出し前記容器の内部の
温度と圧力を調整する内圧防爆型恒温槽において、前記
容器の外部に設けられた駆動用ファンを収納する駆動室
と、前記容器と前記駆動室とを連通させる少なくとも一
つの連通孔と、前記連通孔の一つを貫通して設けられた
回転軸を介して前記駆動用ファンに前記容器の内部で接
続される攪拌用ファンと、を具備し、前記パージガスを
前記駆動室に導入し前記連通孔を通して前記容器の内部
に放出させると共に前記駆動用ファンを回転させて前記
攪拌用ファンを回転させることにより前記パージガスを
攪拌することを特徴とする内圧防爆型恒温槽であり、請
求項２においては、ヒーターを収納する容器の内部に導
入される低温のパージガスを前記ヒーターによって加熱
して前記容器の外部に排出し前記容器の内部の温度と圧
力を調整する内圧防爆型恒温槽において、前記容器の外
部に設けられた駆動用ファンを収納する駆動室と、前記
容器と前記駆動室とを連通させる連通孔と、前記連通孔
を貫通し前記容器の内部の部分に放出孔が設けられた中
空構造の回転軸を介して前記駆動用ファンに前記容器の
内部で接続される攪拌用ファンと、を具備し、前記パー
ジガスを前記回転軸内に導入し前記放出孔から前記容器
の内部に放出させると共に前記駆動室に駆動用ガスを通
過させて前記駆動用ファンを回転させ前記攪拌用ファン
を回転させることにより前記パージガスを攪拌すること
を特徴とする内圧防爆型恒温槽である。In order to achieve the above object, according to claim 1 of the present invention, a purge gas introduced into a container accommodating a heater is heated by the heater to the outside of the container. In an internal-pressure explosion-proof thermostatic chamber that discharges and adjusts the temperature and pressure inside the container, a drive chamber that houses a drive fan provided outside the container, and at least one that connects the container and the drive chamber. And a stirring fan that is connected to the driving fan inside the container via a rotary shaft that penetrates through one of the communication holes. The purge gas is introduced into a chamber and discharged into the container through the communication hole, and the drive fan is rotated to rotate the stirring fan to stir the purge gas. The internal pressure explosion-proof thermostatic chamber according to claim 2, wherein the low-temperature purge gas introduced into the container containing the heater is heated by the heater and discharged to the outside of the container, and the temperature inside the container is increased. In an internal pressure explosion-proof thermostatic chamber for adjusting the pressure, a drive chamber for accommodating a drive fan provided outside the container, a communication hole for communicating the container and the drive chamber, and a communication hole penetrating the communication hole. An agitation fan connected inside the container to the drive fan through a rotary shaft having a hollow structure in which a discharge hole is provided in an inner portion of the container, and the purge gas is supplied into the rotary shaft. Is introduced into the container and discharged into the container through the discharge hole, and the driving gas is passed through the driving chamber to rotate the driving fan and rotate the stirring fan to purge the purge gas. A pressure explosion-proof thermostat characterized by agitating the scan.
【０００９】[0009]
【作用】このような本発明では、請求項１においては、
容器はヒーターと攪拌用ファンとを収納し、駆動室は駆
動用ファンを収納し、連通孔は容器と駆動室とを連通さ
せ、回転軸は連通孔を貫通して駆動用ファンと攪拌用フ
ァンとを接続し、パージガスは駆動室に導入されて駆動
用ファンを回転させ、連通孔を通過して容器内でヒータ
ーによって加熱され、駆動用ファンは攪拌用ファンを回
転させ、攪拌用ファンはパージガスを攪拌して容器の内
部の温度と圧力を調整する。請求項２においては、容器
はヒーターと攪拌用ファンとを収納し、駆動室は駆動用
ファンを収納し、連通孔は容器と駆動室とを連通させ、
回転軸は連通孔を貫通して駆動用ファンと攪拌用ファン
とを接続し、駆動用ガスは駆動室を通過して駆動用ファ
ンを回転させ、パージガスは回転軸内に導入されて放出
孔から容器内に放出され、容器内でヒーターによって加
熱され、駆動用ファンは攪拌用ファンを回転させ、攪拌
用ファンはパージガスを攪拌して容器の内部の温度と圧
力を調整する。According to the present invention as described above, in claim 1,
The container houses the heater and the agitation fan, the drive chamber houses the drive fan, the communication hole connects the container and the drive chamber, and the rotary shaft penetrates the communication hole to drive the drive fan and the agitation fan. And the purge gas is introduced into the drive chamber to rotate the drive fan, passes through the communication hole and is heated by the heater in the container, the drive fan rotates the agitation fan, and the agitation fan uses the purge gas. Is stirred to adjust the temperature and pressure inside the container. In Claim 2, the container houses the heater and the stirring fan, the drive chamber houses the drive fan, and the communication hole connects the container and the drive chamber,
The rotary shaft penetrates the communication hole to connect the drive fan and the agitation fan, the drive gas passes through the drive chamber to rotate the drive fan, and the purge gas is introduced into the rotary shaft to be discharged from the discharge hole. After being discharged into the container and heated by the heater in the container, the driving fan rotates the stirring fan, and the stirring fan stirs the purge gas to adjust the temperature and pressure inside the container.
【００１０】[0010]
【実施例】次に、本発明の実施例について図面を用いて
説明する。尚、以下の図面において、図３と重複する部
分は同一番号を付してその説明は適宜に省略する。Embodiments of the present invention will now be described with reference to the drawings. In the drawings below, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be appropriately omitted.
【００１１】図１は請求項１に記載された発明の一実施
例を示す図である。図１において、内圧防爆型恒温槽
は、容器１０と、容器１０の内部に収容されるカラム１
１、ヒーター１２、攪拌用ファン１３と、容器１０の外
部に設けられる駆動室２０と、この駆動室２０の内部に
収容される駆動用ファン２１とで構成されている。FIG. 1 is a diagram showing an embodiment of the invention described in claim 1. In FIG. In FIG. 1, an internal pressure explosion-proof thermostatic chamber is composed of a container 10 and a column 1 housed inside the container 10.
1, a heater 12, a stirring fan 13, a drive chamber 20 provided outside the container 10, and a drive fan 21 housed inside the drive chamber 20.
【００１２】攪拌用ファン１３と駆動用ファン２１と
は、容器１０と駆動室２０とを連通させる連通孔１５を
貫通する回転軸４０を介して接続され、駆動室２０には
外部からパージガスＧ１が導入されてその噴流により駆
動用ファン２１を回転させる位置にパージガスＧ１の導
入口２２が設けられ、容器１０にはパージガスＧ１の排
気口１４が設けられている。The stirring fan 13 and the drive fan 21 are connected via a rotary shaft 40 that penetrates a communication hole 15 that connects the container 10 and the drive chamber 20, and the drive chamber 20 is supplied with purge gas G1 from the outside. An inlet 22 for the purge gas G1 is provided at a position where the drive fan 21 is rotated by the jet flow introduced therein, and an exhaust port 14 for the purge gas G1 is provided in the container 10.
【００１３】次に、図１に示した内圧防爆型恒温槽の動
作を説明する。導入口２２からパージガスＧ１が駆動室
２０の内部に導入されると、パージガスＧ１は駆動用フ
ァン２１を回転させて連通孔１５を通過して容器１０の
内部に放出される。Next, the operation of the internal pressure explosion-proof thermostatic chamber shown in FIG. 1 will be described. When the purge gas G1 is introduced into the drive chamber 20 through the inlet 22, the purge gas G1 rotates the drive fan 21, passes through the communication hole 15, and is discharged into the container 10.
【００１４】駆動用ファン２１の回転によって回転軸４
０を介して攪拌用ファン１３が回転して容器１０の内部
に放出されたパージガスＧ１を攪拌し、パージガスＧ１
は、容器１０の内部に設けられた温度センサ（図示しな
い）と外部で接続されたコントローラー（図示しない）
でその出力を制御されるヒーター１２によって温度制御
され、その大部分は容器１０内を循環する循環流とな
り、その一部分が排気口１４から容器１０の外部に排気
される。The rotation of the drive fan 21 causes the rotation shaft 4 to rotate.
The stirring fan 13 is rotated through 0 to stir the purge gas G1 released inside the container 10 to generate the purge gas G1.
Is a controller (not shown) externally connected to a temperature sensor (not shown) provided inside the container 10.
The temperature is controlled by the heater 12, the output of which is controlled by the heater 12. Most of the temperature is a circulating flow that circulates in the container 10.
【００１５】この場合、攪拌用ファン１３に例えば数ｍ
3／ｍｉｎ程度の風量を与えることが出来るようにパー
ジガスＧ１の供給圧力を設定すれば、その流量は多くを
必要としない。In this case, the stirring fan 13 has, for example, several meters.
If the supply pressure of the purge gas G1 is set so that an air volume of about 3 / min can be given, the flow rate does not need to be large.
【００１６】またパージガスＧ１は攪拌されるので容器
１０内の温度を均一とする為に、多量の流量を必要とせ
ず、必要なパージガス流量は容器１０の内圧を防爆基準
を満たす所定の圧力以上に維持し、容器１０内に引き込
まれる可燃性ガスとして例えばキャリアガスＧ３が容器
１０内にリークした場合に容器１０が爆発しない程度に
希釈できる流量だけとなる。従って、その分ヒーターの
容量も小さくすることができるので、消費電力を大幅に
削減することができる。Further, since the purge gas G1 is agitated, a large amount of flow rate is not required in order to make the temperature in the container 10 uniform, and the required purge gas flow rate is such that the internal pressure of the container 10 is higher than a predetermined pressure satisfying the explosion proof standard. As the combustible gas that is maintained and drawn into the container 10, for example, when the carrier gas G3 leaks into the container 10, the flow rate is such that the container 10 does not explode and is diluted. Therefore, the capacity of the heater can be reduced accordingly, and the power consumption can be significantly reduced.
【００１７】一方、図１に示す構成で恒温槽を低温にし
て使用する場合には、パージガスＧ１を予め低温にして
おくが、駆動用ファン２１を回転させることで熱交換さ
れてしまい恒温槽の温度を効果的に下げられない。また
パージガスＧ１の冷却装置として例えばボルテックスチ
ューブを用いた場合、チューブに背圧が加わるとその冷
却効率が悪くなるが、パージガスＧ１で駆動用ファン２
１を回転させる為には圧力が必要であるのでチューブに
背圧が加わってしまい十分な低温を得ずらいということ
がある。従って恒温槽を短時間で冷却して低温で使用す
る場合には、このような恒温槽は必ずしも適当ではな
い。On the other hand, in the case of using the thermostatic chamber at a low temperature in the structure shown in FIG. 1, the purge gas G1 is set to a low temperature in advance, but heat is exchanged by rotating the driving fan 21 and the temperature of the thermostatic chamber is changed. The temperature cannot be lowered effectively. Further, when a vortex tube is used as a cooling device for the purge gas G1, cooling efficiency deteriorates when back pressure is applied to the tube.
Since a pressure is required to rotate 1, the back pressure may be applied to the tube, and it may be difficult to obtain a sufficient low temperature. Therefore, when the constant temperature bath is cooled in a short time and used at a low temperature, such a constant temperature bath is not necessarily suitable.
【００１８】図２は請求項２に記載された発明の一実施
例を示し、低温での使用に適した内圧防爆型恒温槽の構
成を示す図である。図２において、内圧防爆型恒温槽
は、容器１０と、容器１０の内部に収容されるカラム１
１、ヒーター１２、ヒーター１２に対して対称に配置さ
れた攪拌用ファン１３と、容器１０の外部に設けられる
駆動室３０と、この駆動室３０の内部に収容される駆動
用ファン２１とで構成されている。FIG. 2 shows an embodiment of the invention described in claim 2 and is a view showing the structure of an internal pressure explosion-proof constant temperature bath suitable for use at low temperature. In FIG. 2, the internal pressure explosion-proof constant temperature bath is composed of a container 10 and a column 1 housed inside the container 10.
1, a heater 12, a stirring fan 13 arranged symmetrically with respect to the heater 12, a drive chamber 30 provided outside the container 10, and a drive fan 21 housed inside the drive chamber 30. Has been done.
【００１９】攪拌用ファン１３と駆動用ファン２１と
は、容器１０と駆動室３０とを連通させる連通孔１６を
貫通する回転軸５０を介して接続され、この回転軸５０
は中空構造となっており、容器１０の外部の部分にはパ
ージガスＧ１の導入口５１が、容器１０の内部の部分に
はパージガスＧ１の放出口５２が設けられ、容器１０に
はパージガスＧ１の排気口１４が設けられている。The stirring fan 13 and the driving fan 21 are connected to each other via a rotary shaft 50 penetrating a communication hole 16 that connects the container 10 and the drive chamber 30.
Has a hollow structure, an inlet 51 for the purge gas G1 is provided outside the container 10, and an outlet 52 for the purge gas G1 is provided inside the container 10, and the container 10 is exhausted with the purge gas G1. A mouth 14 is provided.
【００２０】そして駆動室３０には外部から駆動ガスＧ
２が導入されて駆動用ファン２１を回転させる位置に駆
動用ガス導入口３１が設けられ、また駆動ガスＧ２を外
部に排気する駆動ガス排気口３２が設けられている。The driving gas G is supplied to the driving chamber 30 from the outside.
A drive gas introduction port 31 is provided at a position where 2 is introduced to rotate the drive fan 21, and a drive gas exhaust port 32 for exhausting the drive gas G2 to the outside is provided.
【００２１】次に、図２に示した内圧防爆型恒温槽の動
作を説明する。パージガスＧ１がボルテックスチューブ
（図示しない）によって冷却されて、導入口５１から回
転軸５０内に導入されるとそのパージガスＧ１は放出口
５２から容器１０の内部に放出される。Next, the operation of the internal pressure explosion-proof thermostatic chamber shown in FIG. 2 will be described. When the purge gas G1 is cooled by a vortex tube (not shown) and introduced into the rotary shaft 50 through the introduction port 51, the purge gas G1 is discharged into the container 10 through the discharge port 52.
【００２２】一方、駆動用ガスＧ２が駆動用ガス導入口
３１から駆動室３０の内部に導入されると、駆動用ガス
Ｇ２の噴流によって駆動用ファン２１が回転する。そし
て駆動用ガスＧ２は駆動用ガス排出口３２から駆動室３
０の外部に排出される。On the other hand, when the driving gas G2 is introduced into the driving chamber 30 through the driving gas inlet 31, the driving fan 21 is rotated by the jet flow of the driving gas G2. The driving gas G2 is supplied from the driving gas outlet 32 to the driving chamber 3
0 is discharged to the outside.
【００２３】そして駆動用ファン２１の回転によって回
転軸５０を介して攪拌用ファン１３が回転して容器１０
の内部に放出されたパージガスＧ１を攪拌し、パージガ
スＧ１は、容器１０の内部に設けられた温度センサ（図
示しない）と外部で接続されたコントローラー（図示し
ない）でその出力を制御されるヒーター１２によって温
度制御されて排気口１４から容器１０の外部に排気され
る。Then, the rotation of the driving fan 21 causes the stirring fan 13 to rotate via the rotating shaft 50 so that the container 10
The purge gas G1 discharged into the inside of the container is stirred, and the output of the purge gas G1 is controlled by a temperature sensor (not shown) provided inside the container 10 and a controller (not shown) externally connected to the heater 12. The temperature is controlled by the gas and the gas is exhausted from the exhaust port 14 to the outside of the container 10.
【００２４】この場合、低温のパージガスＧ１は金属と
の接触面積を小さくして容器１０に導入される為熱交換
されにくく、また供給圧力も小さく出来る為ボルテック
スチューブがパージガスＧ１を冷却する効率も良くな
る。従って容器１０の温度を効率良く下げることができ
る温度制御が可能となる。In this case, the low temperature purge gas G1 is introduced into the container 10 with a small contact area with the metal, so that heat exchange is difficult and the supply pressure can be reduced, so that the vortex tube cools the purge gas G1 efficiently. Become. Therefore, it is possible to control the temperature so that the temperature of the container 10 can be efficiently lowered.
【００２５】また、攪拌用ファン１３に例えば数ｍ3／
ｍｉｎ程度の風量を与えることが出来るように駆動用ガ
スＧ２の供給圧力を設定すれば、その流量は多くを必要
としない。In addition, the stirring fan 13 has, for example, a few m 3 /
If the supply pressure of the driving gas G2 is set so that the air volume of about min can be given, the flow rate does not need to be large.
【００２６】またパージガスＧ１は攪拌されるので容器
１０内の温度を均一にする為に多量の流量を必要とせ
ず、必要なパージガス流量は容器１０の内圧を所定の圧
力以上に維持し、容器１０内に引き込まれる可燃性ガス
として例えばキャリアガスＧ３が容器１０内にリークし
た場合に容器１０が爆発しない程度に希釈できる流量だ
けとなる。従って、その分ヒーター１２の容量も小さく
することができるので、消費電力を大幅に削減すること
ができる。Further, since the purge gas G1 is agitated, a large flow rate is not required to make the temperature in the container 10 uniform, and the required purge gas flow rate maintains the internal pressure of the container 10 at a predetermined pressure or higher. As the combustible gas drawn in, for example, when the carrier gas G3 leaks into the container 10, the flow rate is such that the container 10 can be diluted so as not to explode. Therefore, since the capacity of the heater 12 can be reduced accordingly, the power consumption can be significantly reduced.
【００２７】[0027]
【発明の効果】本発明は、以上説明したように、請求項
１においてはパージガスの流量を防爆に必要な流量のみ
とするように構成されているので、恒温槽の特性を維持
する為のパージガスの消費量及びヒーターの消費電力を
削減した内圧防爆型恒温槽を提供することができ、請求
項２においてはパージガスの流量を防爆に必要な流量の
みとし、低温のパージガスを熱交換されにくく供給でき
るように構成されているので、恒温槽の特性を維持する
為のパージガスの消費量及びヒーターの消費電力を削減
し、低温での使用に適した内圧防爆型恒温槽を提供する
ことができる。As described above, according to the present invention, since the flow rate of the purge gas is set to only the flow rate necessary for explosion protection in claim 1, the purge gas for maintaining the characteristics of the thermostatic chamber is provided. It is possible to provide an internal pressure explosion-proof thermostatic chamber in which the consumption amount of the gas and the power consumption of the heater are reduced. Since it is configured as described above, it is possible to reduce the consumption of the purge gas and the power consumption of the heater for maintaining the characteristics of the constant temperature oven, and to provide an internal pressure explosion-proof constant temperature oven suitable for use at low temperature.
【図１】請求項１に記載された発明の一実施例を示す図
である。FIG. 1 is a diagram showing an embodiment of the invention described in claim 1.
【図２】請求項２に記載された発明の一実施例を示す図
である。FIG. 2 is a diagram showing an embodiment of the invention described in claim 2;
【図３】従来のエアバス式恒温槽の構成を示す図であ
る。FIG. 3 is a diagram showing a configuration of a conventional air bath type constant temperature bath.
１０ 容器 １２ ヒーター １３ 攪拌用ファン １５，１６ 連通孔 ２０，３０ 駆動室 ４０，５０ 回転軸 ５２ 放出孔 Ｇ１ パージガス Ｇ２ 駆動用ファン 10 Container 12 Heater 13 Stirring Fan 15,16 Communication Hole 20,30 Drive Chamber 40,50 Rotating Shaft 52 Release Hole G1 Purge Gas G2 Drive Fan
Claims (2)
るパージガスを前記ヒーターによって加熱して前記容器
の外部に排出し前記容器の内部の温度と圧力を調整する
内圧防爆型恒温槽において、 前記容器の外部に設けられた駆動用ファンを収納する駆
動室と、 前記容器と前記駆動室とを連通させる少なくとも一つの
連通孔と、 前記連通孔の一つを貫通して設けられた回転軸を介して
前記駆動用ファンに前記容器の内部で接続される攪拌用
ファンと、を具備し、 前記パージガスを前記駆動室に導入し前記連通孔を通し
て前記容器の内部に放出させると共に前記駆動用ファン
を回転させて前記攪拌用ファンを回転させることにより
前記パージガスを攪拌することを特徴とする内圧防爆型
恒温槽。1. An internal pressure explosion-proof thermostatic chamber for adjusting the temperature and pressure inside the container by heating the purge gas introduced into the container housing the heater by the heater and discharging the purge gas to the outside of the container, A drive chamber for accommodating a drive fan provided outside the container, at least one communication hole for communicating the container and the drive chamber, and a rotation shaft provided through one of the communication holes. An agitating fan connected to the drive fan inside the container via the drive fan and introducing the purge gas into the drive chamber to discharge the purge gas into the container through the communication hole. An internal pressure explosion-proof thermostatic chamber, wherein the purge gas is agitated by rotating the agitating fan.
る低温のパージガスを前記ヒーターによって加熱して前
記容器の外部に排出し前記容器の内部の温度と圧力を調
整する内圧防爆型恒温槽において、 前記容器の外部に設けられた駆動用ファンを収納する駆
動室と、 前記容器と前記駆動室とを連通させる連通孔と、 前記連通孔を貫通し前記容器の内部の部分に放出孔が設
けられた中空構造の回転軸を介して前記駆動用ファンに
前記容器の内部で接続される攪拌用ファンと、を具備
し、 前記パージガスを前記回転軸内に導入し前記放出孔から
前記容器の内部に放出させると共に前記駆動室に駆動用
ガスを通過させて前記駆動用ファンを回転させ前記攪拌
用ファンを回転させることにより前記パージガスを攪拌
することを特徴とする内圧防爆型恒温槽。2. An internal pressure explosion-proof thermostatic chamber for adjusting a temperature and a pressure inside the container by heating a low temperature purge gas introduced into the container containing the heater by the heater and discharging the gas to the outside of the container. A drive chamber for accommodating a drive fan provided outside the container, a communication hole for communicating the container with the drive chamber, and a discharge hole provided inside the container through the communication hole. A stirring fan that is connected to the driving fan inside the container via a rotating shaft having a hollow structure, and the purge gas is introduced into the rotating shaft to introduce the purge gas into the inside of the container. Internal pressure explosion protection, characterized in that the purge gas is discharged to the drive chamber and the drive gas is passed through the drive chamber to rotate the drive fan to rotate the stirring fan to stir the purge gas. Type constant temperature bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4336129A JP3070645B2 (en) | 1992-12-16 | 1992-12-16 | Internal pressure explosion-proof thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4336129A JP3070645B2 (en) | 1992-12-16 | 1992-12-16 | Internal pressure explosion-proof thermostat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06186218A true JPH06186218A (en) | 1994-07-08 |
| JP3070645B2 JP3070645B2 (en) | 2000-07-31 |
Family
ID=18296001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4336129A Expired - Lifetime JP3070645B2 (en) | 1992-12-16 | 1992-12-16 | Internal pressure explosion-proof thermostat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3070645B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006066326A (en) * | 2004-08-30 | 2006-03-09 | Ebara Ballard Corp | Fuel cell unit and operation method of fuel cell unit |
| CN104678032A (en) * | 2013-11-28 | 2015-06-03 | 杭州捷岛科学仪器有限公司 | Gas chromatographic column incubator |
| JP2016125912A (en) * | 2015-01-05 | 2016-07-11 | 横河電機株式会社 | Purge/cooling mechanism part |
-
1992
- 1992-12-16 JP JP4336129A patent/JP3070645B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006066326A (en) * | 2004-08-30 | 2006-03-09 | Ebara Ballard Corp | Fuel cell unit and operation method of fuel cell unit |
| CN104678032A (en) * | 2013-11-28 | 2015-06-03 | 杭州捷岛科学仪器有限公司 | Gas chromatographic column incubator |
| JP2016125912A (en) * | 2015-01-05 | 2016-07-11 | 横河電機株式会社 | Purge/cooling mechanism part |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3070645B2 (en) | 2000-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0371796B1 (en) | Apparatus and process for chemical vapor deposition | |
| JPH076956A (en) | Heat treating device | |
| US4166610A (en) | Vacuum carburizing furnace | |
| US5314583A (en) | Process for the comminution of materials and plant for carrying out the process | |
| JP3070645B2 (en) | Internal pressure explosion-proof thermostat | |
| JPH07283164A (en) | Device and method for heat treatment | |
| US5785762A (en) | External combustion oxidation apparatus | |
| US5525313A (en) | Apparatus for manufacturing a phosphor used in a display device | |
| JP2001210603A (en) | Reaction tube for vertical thermal treatment device and thermal treatment apparatus provided therewith | |
| JPH0854315A (en) | Hot airflow generator | |
| JP2852871B2 (en) | Burner for gas stove | |
| JP2007090203A (en) | Chemical reaction apparatus heated by microwave | |
| JP2002055094A (en) | Column oven for chromatograph | |
| JP3095735B2 (en) | Power generator | |
| CN113520156B (en) | Liquid heating device | |
| KR100906942B1 (en) | Movable low temperature fuel supply apparatus | |
| JPH0624851A (en) | Pressure degreasing furnace | |
| JP2003257956A (en) | Heat treatment apparatus | |
| JP3582633B2 (en) | Heating equipment | |
| JPS62234869A (en) | Heat treatment of electrode for fuel cell | |
| JP2004117069A (en) | Apparatus for controlling sample temperature | |
| JPH10274114A (en) | Heat resistance evaluating device for intake system pipe for internal combustion engine | |
| SU808554A1 (en) | Device for gas feeding to furnace | |
| JP2000320818A (en) | Waste disposing apparatus | |
| JPH1123553A (en) | High speed cooling oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080526 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090526 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100526 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100526 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110526 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130526 Year of fee payment: 13 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130526 Year of fee payment: 13 |