Joule-Thomson cooler
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsDominique Chazot, Alain Cottereau
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Abstract
The Joule-Thomson cooler comprises a low-pressure circuit (2) in a spiral, flat, cylindrical or conical shape, formed in a block (1) of insulating material, and a high-pressure circuit comprising at least one, typically two, branches (4a, 4b) communicating with a central expansion orifice (6) , each branch itself being wound into a helical spiral, the two branches being produced in the form of cylindrical spirals of opposite hand so that they can nestle together in the duct (2) . The cooler is particularly applicable to photodetector devices with infrared-sensitive elements (9).
Claims8
A Joule-Thomson cooler, comprising a low-pressure gas circuit and a high-pressure gas circuit extending in the low-pressure gas circuit, the high-pressure gas circuit having one end connectable to a source of gas under pressure and a gas expansion orifice at another end, the high-pressure gas circuit comprising a first and a second branch, both opening into the expansion orifice and shaped in the form of helical spirals of opposite hand nested together, the high-pressure circuit being defined at least in part by a duct formed in a body.
Dependencies are inferred from the claim text.