Heating and cooling apparatus for chromatography column

Liquid purification or separation – With heater or heat exchanger

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Details

55197, 55386, 2101982, G01D 1508

Patent

active

045991693

ABSTRACT:
A baffle divides a housing into first and second compartments. The first compartment includes a chromatography oven having a fan for circulating heated air over the columns while the oven is closed and for sucking ambient temperature cooling air in the first compartment into the oven while the oven is open. Ambient air is sucked into a tortuous path in the first compartment. Cooling air from the second compartment flows into the first compartment via openings in the baffle. The cooling air flows over the oven exterior and is at least partially sucked into the oven by an oven fan while the oven is open. The oven heater, coaxial with the blades, is located between an oven wall and blades. A ring baffle, having approximately the same diameter as and coaxial with the blades, is located between the wall and the blades. A fan outside of the oven sucks air from the oven through an outlet while the oven is open. The second fan is separated from an inlet for the oven by a baffle having an opening through which air is sucked by the second fan while the oven is closed. The second compartment includes a casing for fluid flow controllers for the columns, which casing is maintained at constant temperature by ambient air sucked around the second compartment.

REFERENCES:
patent: 4038055 (1977-07-01), Varano
patent: 4070169 (1978-01-01), Iwao et al.
patent: 4111643 (1978-09-01), Welland
patent: 4181613 (1980-01-01), Welsh et al.

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