Column oven for gas chromatography device and gas chromatography device using the same

Abstract

The invention relates to a column oven for a gas chromatography device and the gas chromatography device using the same. Even if combustible gas left in a column oven main body is ignited, on one hand, the scale of the explosion can be reliably reduced and on the other hand, a door is prevented from being opened suddenly caused by air pressure during explosion to cause a user to be in a dangerousstate. A latch that holds the door to be in a locked state has a latch arm that extends linearly on both sides across a latch shaft. One end of the latch arm on the back side forms a hook-shaped part.The hook-shaped part is clamped to the column oven main body or to a hooking part arranged a housing of gas chromatography device main body including the column oven main body. When an explosion occurs in the internal space and the airflow suddenly flows out through the gap between the inner door and the front edge portion of the right side wall, the airflow will strike the latch arm on the frontside with respect to the latch shaft. Thus, the latch is subjected to a force in a counterclockwise direction, and the clamping between the hook-shaped part and the hooking part is enhanced, so the clamping is prevented from being loosen to cause the door to be opened.

Description

Technical field [0001] The invention relates to a column thermostat for a gas chromatograph used for temperature adjustment of a chromatographic column for a gas chromatograph (GC), and a gas chromatograph device using the same. Background technique [0002] In a gas chromatography device, a gaseous sample is introduced into a chromatographic column along with the flow of a carrier gas, and while the sample passes through the chromatographic column, various compounds in the sample are separated in the time direction. Then, the sample gas from the outlet end of the chromatographic column is introduced into the detector, and the compounds contained in the sample gas are sequentially detected in the detector. The chromatographic column is housed in a column thermostat for temperature adjustment. During the execution of the analysis, the column thermostat is used to maintain the chromatographic column at a specified temperature, or to increase the temperature with the passage of time...

AI Technical Summary

Problems solved by technology

In this way, the door 15 will be pushed open suddenly by the air pressure applied to the entire inner door 152, so that there is a danger that the door 15 will come into contact with a user located in front of the door 15.

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