| CPC G01N 30/30 (2013.01) [G01N 2030/025 (2013.01)] | 5 Claims |
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1. A gas chromatograph comprising:
a main body having internal space;
a column cartridge disposed in the internal space of the main body and including a case, a heater and a separation column for separating components in sample gas, wherein the separation column is accommodated in the case together with the heater, the case is provided with an intake port through which air for cooling the separation column is taken into the case, the case includes a first lateral surface, a second lateral surface positioned on an opposite side with respect to the first lateral surface, and another surface which extends between the first lateral surface and the second lateral surface and intersects with the first lateral surface the and second lateral surface, the intake port is provided on the second lateral surface, and pipes, each connected to an inlet and an outlet of the separation column, exit from the first lateral surface of the case;
a sample gas supplier for supplying a sample gas to the separation column, the sample gas supplier being attached to the main body and being fluidly connected to the inlet of the separation column;
a detector for detecting components separated in the separation column, the detector being attached to the main body and being fluidly connected to the outlet of the separation column;
an interface part that is provided separately from the column cartridge in the internal space of the main body, and includes a heat exchange block and a heater for heating the heat exchange block, wherein the heat exchange block is in contact with the pipes so as to adjust the temperature of the pipes;
a first fan provided to face to the second lateral surface and for supplying first air from outside of the main body into the case of the column cartridge via the intake port; and
a second fan which is different from the first fan, and is for cooling the column cartridge directly by intaking second air from outside of the main body and blowing the second air from outside the main body to the column cartridge, wherein
the first lateral surface of the case of the column cartridge, from which the pipes exit, faces the interface part, and
the second fan is provided to face to an area, which is closer to the first lateral surface than the second lateral surface, of the another surface of the case of the column cartridge and blows the second air from outside of the main body directly to the area so as to dissipate the heat which is transferred to the column cartridge via the pipes.
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