Patent ID: 11906490
Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A micro gas chromatography system comprising:
a fluid feeder configured to feed a fluid composed of a carrier gas and a gas mixture containing at least one analyte component to a micro gas preconcentrator chip;
the micro gas preconcentrator chip configured to concentrate and desorb the analyte component contained in the fluid composed of the carrier gas and the gas mixture;
a micro gas chromatography chip into which the fluid containing the analyte component desorbed from the micro gas preconcentrator chip is introduced and from which the analyte component contained in the fluid is separately eluted,
a micro transfer column provided at a preceding stage of the micro gas chromatography chip, wherein the micro transfer column includes a micro heater as a heat source, a thermoelectric element, and a temperature sensor for adjusting temperature of the analyte component to a preset temperature; and
a micro sensing unit including a gas detector configured to detect the analyte component eluted from the micro gas chromatography chip,
wherein,
the micro gas chromatography chip includes a micro separation column having a rectangular, circular, or serpentine micro-channel formed in one surface of a substrate, the micro-channel having a plurality of bumps formed on an inside wall surface thereof, wherein some of the bumps are formed on a first side of the inside wall surface of the micro-channel, the other bumps are formed on a second side that is opposite to the first side, and the bumps formed on the first side and the bumps formed on the second side are alternate with each other,
the gas detector is a micro thermal conductivity detection sensor, and the micro thermal conductivity detection sensor is sealed using a glass cover, and includes a heating resistor on an inner periphery, wherein the heating resistor has a serpentine shape, and
the micro gas preconcentrator chip is mounted on a replaceable micro gas preconcentrator module,
wherein,
the replaceable micro gas preconcentrator module comprises an upper cover, a lower cover, a tray, and a lower body,
the upper cover comprises a fluid inlet and a fluid outlet, wherein the replaceable micro gas preconcentrator module is configured such that the fluid from the fluid feeder enters the fluid inlet and is concentrated on the micro gas preconcentrator chip and the analyte is desorbed from the micro gas preconcentrator chip and discharged through the fluid outlet to the micro gas chromatography chip,
the replaceable micro gas preconcentrator module is configured such that the micro gas preconcentrator chip is positioned between the upper cover and the lower cover and is supported on the tray, and the tray is mounted on the upper surface of the lower cover, and
the replaceable micro gas preconcentrator module and the micro gas preconcentrator chip are assembled by stacking in the order of the lower body, the lower cover, the tray, the micro gas preconcentrator chip, and the upper cover.