Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Patent
1977-02-28
1978-01-24
Adee, John
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
55386, B01D 1508
Patent
active
040701697
ABSTRACT:
In a chromatographic column oven, a particular arrangement of a fan, heater and baffles provides low thermal gradients and rapid oven cool-down. Low thermal gradients are obtained by providing an air circulation pattern that promotes optimum mixing of the air within the oven enclosure. A fast cool-down time is obtained by providing a high-velocity air flow along the walls of the oven enclosure. A fan is mounted substantially at the geometric center of a first wall of the oven enclosure. A second wall of the enclosure, which faces the first wall, comprises a door for providing access to the oven enclosure. An elongate heating element is mounted on the first wall so as to substantially surround the periphery of the fan. A plurality of baffles are mounted symmetrically around the periphery of the fan on and extending perpendicularly from the first wall. A gap is provided between each particular baffle and the wall or walls intersecting the first wall nearest that particular baffle.
REFERENCES:
patent: 3165147 (1965-01-01), Roof et al.
patent: 3305000 (1967-02-01), Bullen et al.
patent: 3385099 (1968-05-01), Diem et al.
patent: 3422604 (1969-01-01), Haase
Henshaw Fritz Hunt
Iwao Kumiy Roy
Adee John
Cole Stanley Z.
Fisher Gerald M.
Morrissey John J.
Varian Associates Inc.
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