Gas separation: processes – With control responsive to sensed condition – Temperature sensed
Patent
1995-11-07
1997-06-03
Spitzer, Robert
Gas separation: processes
With control responsive to sensed condition
Temperature sensed
95 18, 95 87, 96102, B01D 1508
Patent
active
056349610
ABSTRACT:
A high-performance, field-portable, thermally agile, gas chromatography (GC) system employs a low-thermal-mass oven in which intake and exhaust vent apertures are aligned with respect to the rotational axis of the stirring fan. The poppets of the vent dynamically vent to ambient the air-flow generated by the stirring fan. The geometry of the vents cooperates with the axial and radial components of the stirring fan to promote conical vortex air flow, to facilitate rapid and controllable mass-flow interchange with ambient air. The resulting cooling performance in a small GC oven promotes more rapid requilibration between runs, control at temperatures closer to ambient, and the reduction of thermal overshoot; thus enhancing the performance and productivity of a field instrument.
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Hewlett--Packard Company
Spitzer Robert
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