Commissariat a L'energie Atomique

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Air Liquid

Serge Reale

Gerard Claudet

Alain Ravex

Bernard Dewanckel

A closure member (16) of the cooler is controlled by a bulb actuator (18) which defines an auxiliary gas volume (24) located in the cold part of the cooler and connected to a chamber (21) of very much larger volume located in the warm part of the cooler. Application in the cooling of infrared ray detectors.

Joule-Thomson cooler

It comprises a first cylinder (102), a displacement piston (104) sliding in the first cylinder (102), a conduit in which a thermal regenerator is included, a second cylinder (202), a second displacement piston (204) sliding in the second cylinder (202), means for displacing the first cylinder and the second cylinder in phase relation. A gas bearing (104a) is provided at the hot end of the first piston (104) and a gas bearing (104b) is provided at the intermediate temperature end of the first piston. A gas bearing (204b) is also provided at the intermediate temperature end of the second piston (204) and a gas bearing (204a) is provided at the cold end of the second piston (204).

Growing community of inventors

Grenoble, France

Serge Reale