Column thermostat for gas chromatograph and gas chromatograph using it

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 present invention relates to a gas chromatograph column thermostat for adjusting the temperature of a gas chromatograph (GC) column, and a gas chromatograph using the same. Background technique [0002] In a gas chromatograph, a gaseous sample is introduced into a column along with the flow of a carrier gas, and various compounds in the sample are separated in the time direction while the sample passes through the column. Then, the sample gas from the outlet end of the column is introduced into a detector, and the compounds contained in the sample gas are sequentially detected in the detector. The column is housed in a column thermostat for temperature regulation, by which the column is maintained at a fixed temperature during the execution of the analysis, or in a manner in which the temperature rises with the lapse of time according to a prescribed temperature rise program. way to adjust. [0003] The above-mentioned column oven is generally fo...

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.

Images