Back to results
US 11,209,192 B2Granted
Cryogenic Stirling refrigerator with a pneumatic expander
AssigneeCryo Tech Ltd.
InventorAlexander Veprik
Life of this patent
Estimating the term…
Abstract
A split Stirling cryogenic refrigerator device may include a resonant pneumatic expander comprising a resonant displacer assembly supported by a spring and configured to slide back and forth along a longitudinal axis within a housing of the resonant pneumatic expander, the resonant displacer assembly comprising a tubular displacer containing a regenerator and coupled to a sealing piston, and a driving piston coupled to the sealing piston by an elongated radially compliant and axially rigid connecting member.
Claims19
A split Stirling cryogenic refrigerator device comprising:
- a resonant pneumatic expander comprising a resonant displacer assembly supported by a spring and configured to slide back and forth along a longitudinal axis within a housing of the resonant pneumatic expander, the resonant displacer assembly comprising
- a tubular displacer containing a regenerator and coupled to a sealing piston, and
- a driving piston coupled to the sealing piston by an elongated radially compliant and an axially rigid connecting member, wherein the connecting member comprises a preloaded helical spring with closed coils.
Dependencies are inferred from the claim text.