Refrigeration – Low pressure cold trap process and apparatus
Patent
1993-02-22
1994-09-27
Bennett, Henry A.
Refrigeration
Low pressure cold trap process and apparatus
7386311, B01D 800
Patent
active
053498330
ABSTRACT:
A cryotrap for an air pollution analyzer having a core with an axial opening for receiving a cooling gas expander, a length of tubing carried on the core defining a gas flow path around the gas expander, and an electric heater on the core, with the tubing disposed between the heater and expander. The core has a helical groove around the exterior thereof, with the length of tubing positioned in the groove, and the heater positioned around the core over the tubing. A Stirling linear drive cooler charged with helium and having a gas compressor connected to one end of the gas expander with the other end of the expander positioned in the axial opening of the core.
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Pardee Michael A.
Yoong Matthias J. C.
Bennett Henry A.
Kilner Christopher
Xontech, Inc.
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