Gas component detection device

A gas component detection device comprising:

• a column configured to separate a component of gas to be detected;
• a sensor connected to a downstream side of the column and configured to detect the component of the gas to be detected;
• a downstream flow path connecting the column and the sensor;
• and
• a flow path switch arranged in the downstream flow path, wherein
• the flow path switch configured to switch between and execute a measurement mode in which the gas to be detected discharged from the column is caused to flow into the sensor, a discharge mode in which the gas to be detected discharged from the column is discharged to outside, and a backflow mode in which gas is caused to flow back from the downstream flow path in a manner passing through the column so that the column is cleaned,
• the flow path switch includes a valve or a blower having a straightening function, and
• the gas to be detected is released to outside as the valve or the blower is controlled by a control unit.