초록 ▼

The present invention is an improved modular cooling device for cooling gas chromatography analyte sample injectors. The invention is embodied in a series of tubes connected in fluid communication from a coolant supply valve to the injector heating block. A flexible supply tube capable of carrying c

The present invention is an improved modular cooling device for cooling gas chromatography analyte sample injectors. The invention is embodied in a series of tubes connected in fluid communication from a coolant supply valve to the injector heating block. A flexible supply tube capable of carrying coolant while maintaining structural integrity at temperatures up to about 150.degree. C., and having a low thermal conductivity is connected in fluid connection with a coolant supply at one end, and a transition tube at the other. A transition tube, in fluid communication with the supply tube at one end and with the cooling tube at the other, is selected to maintain structural integrity at temperatures up to 450.degree. C. and to have a low thermal conductivity. The cooling tube is in fluid communication with the transition tube at a receiving end and with an exhaust at an exhaust end, and has an outer surface that is physically engageable with a surface of the heating block. The cooling tube is capable of maintaining structural integrity at temperatures up to 450.degree. and has a high thermal conductivity (at least about 200 watts/meter .degree. C.) to facilitate heat transfer. The cooling tube further has a flattened surface for creating a greater surface area for physical engagement with the heating block to provide greater cooling effect.

대표청구항 ▼

[ What is claimed is:] [1.] A cooling apparatus for cooling a gas chromatography analyte sample injector, comprising:a coolant delivery pathway for carrying coolant from a coolant supply to the gas chromatography injector, said delivery pathway havinga supply tube, said supply tube being flexible to

[ What is claimed is:] [1.] A cooling apparatus for cooling a gas chromatography analyte sample injector, comprising:a coolant delivery pathway for carrying coolant from a coolant supply to the gas chromatography injector, said delivery pathway havinga supply tube, said supply tube being flexible to allow elastic deformation, anda cooling tube connected in fluid communication with said supply tube, said cooling tube having a thermal conductivity of at least about 200 watts/meter .degree. C., said cooling tube configured such that at least a portion of said cooling tube is engageable in physical contact with a portion of the injector to permit heat exchange between cooling fluid flowing within the cooling tube and the injector; anda coolant exhaust, in fluid connection with said cooling tube, for exhausting coolant away from the injector.