Free piston with time varying clearance seal

Details Free piston with time varying clearance seal Free piston with time varying clearance seal

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 1/06 (2006.01)

Patent

CA 2559964

A free piston device which is particularly applicable for use with a linear motor for providing acoustic energy to a cryocooler for generating refrigeration at cryogenic temperatures which comprises a time varying clearance seal to counteract piston drift by reducing or eliminating the time averaged flow of working fluid which would otherwise occur.

La présente invention concerne un dispositif à piston libre qui convient particulièrement pour un moteur linéaire destiné à fournir une énergie acoustique à un refroidisseur cryogénique permettant de générer une réfrigération à température cryogénique, qui comprend un joint surdimensionné variable destiné à contrer la dérive du piston par réduction ou élimination de l'écoulement moyen de fluide de travail qui surviendrait sans ce joint.

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