Heater integrated gas chromatography column device

Patent metadata

Field	Value
Publication number	US-11879876-B2
Application number	US-201917309868-A
Country	US
Kind code	B2
Filing date	Oct 24, 2019
Priority date	Dec 28, 2018
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A heater integrated gas chromatography (GC) column device according to the present invention is capable of precisely and uniformly controlling a temperature by having a high thermal conductivity, and raising and lowering a temperature at a high speed by having a low thermal mass, such that a measuring time is significantly decreased. The GC column is in contact with a bobbin with a homogeneous temperature distribution, and thus a temperature is homogeneously distributed in each GC column. Further, the heater integrated GC column device according to the present invention has the above-described effects and may have a smaller size.

First claim

The invention claimed is:

1. A heater integrated gas chromatography (GC) column device comprising:
a bobbin formed of a metal having a high thermal conductivity;
an insulating layer including a metal oxide film formed on an inner surface of the bobbin;
a heat generating layer bonded to the insulating layer and including any one or more selected from the group consisting of carbon nanotubes and a carbon nanotube-metal composite;
a metal electrode formed to be in contact with the heat generating layer; and
a GC column wound around the bobbin while being adjacent to an outer surface of the bobbin.

2. The heater integrated GC column device of claim 1 , further comprising a bonding layer formed between the outer surface of the bobbin, and the GC column.

3. The heater integrated GC column device of claim 2 , wherein the bonding layer is formed of a heat-resistant silicone or an epoxy resin.

4. The heater integrated GC column device of claim 2 , wherein an average thickness of the bonding layer is 10 to 500 μm.

5. The heater integrated GC column device of claim 1 , wherein the metal having a high thermal conductivity is selected from the group consisting of copper, magnesium, aluminum and alloys thereof.

6. The heater integrated GC column device of claim 1 , wherein the insulating layer is a metal oxide film formed by anodizing the inner surface of the bobbin.

7. The heater integrated GC column device of claim 1 , wherein the heat generating layer includes the carbon nanotube-metal composite, and a metal of the carbon nanotube-metal composite includes any one or two or more selected from the group consisting of silver, platinum, gold, copper, nickel, iron, cobalt, and aluminum.

8. The heater integrated GC column device of claim 6 , wherein a sheet resistance of the heat generating layer is 2 to 15 Ω/sq.

9. The heater integrated GC column device of claim 1 , further comprising a noble metal layer covering the metal electrode.

10. The heater integrated GC column device of claim 1 , wherein an average thickness of the insulating layer is 2 to 100 μm and an average thickness of the heat generating layer is 20 to 100 μm.

11. The heater integrated GC column device of claim 1 , wherein the GC column is a packed column or a capillary column.

12. The heater integrated GC column device of claim 1 , further comprising any one or more temperature sensor devices selected from a contact type temperature sensor device including any one or two or more selected from a thermocouple temperature sensor, a resistive temperature detector (RTD), and a thermistor temperature sensor, and a non-contact type temperature sensor device including an infrared temperature sensor, the one or more temperature sensor devices being disposed on an inner side or an outer side of the bobbin.

Assignees

• Bioneer Corp

Inventors

• Park Han-Oh
• Kim Taeman
• Ahn Jong Rok
• Kim Jae-Ha

Classifications

• G01N30/30 Primary

  of temperature · CPC title

• G01N30/6052

  body · CPC title

• H05B3/145

  Carbon only, e.g. carbon black, graphite · CPC title

• G01N2030/025

  Gas chromatography · CPC title

• G01N2030/3053

  using resistive heating · CPC title