Cooling apparatus and cooling trap including such an apparatus
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorRaymond Le Diouron
Life of this patent
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Abstract
The region 1 to be cooled contains the evaporator of a heat pipe 2 which contains a diphase fluid adapted to the desired temperature between about 0.degree. and -100.degree. C. The condenser 7 of the heat pipe is cooled to a set temperature by a copper ring 8 which is cooled by a regulated liquid nitrogen current. Applications in the freeze trapping of solvents contained in a gaseous current.
Claims14
An apparatus for cooling a region at a set temperature below ambient temperature but substantially above liquid nitrogen boiling temperature, said apparatus comprising at least one sealed heat pipe including an evaporator portion disposed in said region and a condenser portion disposed outside said region, an isothermal device disposed outside said region and in thermal exchange relation with said condenser portion, and means for supplying a regulated current of liquid nitrogen for maintaining said isothermal device substantially at said set temperature, said heat pipe containing a diphasic fluid whose boiling domain extends on either side of said set temperature.
A cooling trap for a mixture of fluids, said trap comprising a container, means for circulating said mixture through said container from an inlet to an outlet thereof, and an apparatus for cooling said container at a set temperature below ambient temperature but substantially above liquid nitrogen boiling temperature, said apparatus comprising at least one sealed heat pipe including an evaporator portion disposed in said container and a condenser portion disposed outside said container, an isothermal device disposed outside said region and in thermal exchange relation with said condenser portion, and means for supplying a regulated current of liquid nitrogen for maintaining said isothermal device at said set temperature, said heat pipe containing a diphasic fluid having a boiling domain which extends on either side of said set temperature.
Dependencies are inferred from the claim text.