Low vibration cryogenic refrigerator
AssigneeSemi Conductor Devices—An Elbit Systems-Rafael Partnership
InventorAlexander Veprik
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Abstract
A mechanical system, such as cryogenic refrigerator system, is described. The system comprises two or more axial moving elements generating two or more cyclic forces along parallel axes and a vibration attenuation unit. The cyclic forces are provided with common frequency and certain phase difference between them. The vibration attenuation unit is configured for attenuating vibrations corresponding to two or more modes of vibrations characterized by a frequency corresponding to operation frequency of said two or more cyclic forces.
Claims15
A cryogenic refrigerator comprising:
- linear Split Stirling unit having an expander unit and a compressor unit mounted in a side by side configuration upon a common frame, and a vibration attenuation unit attached to said Split Stirling unit;
- wherein said vibration attenuation unit being configured for attenuation of two or more modes of vibration characterized by a frequency corresponding to operation frequency of said linear Split Stirling unit.
A system comprising a mechanical system comprising two or more axial moving elements generating two or more cyclic forces along parallel axes, said two or more cyclic forces having common frequency and certain phase difference between them, and a vibration attenuation unit;
- said vibration attenuation unit comprising flexural bearing connectable to said mechanical system and to a proof mass assembly, wherein total mass and arrangement of masses of said proof mass assembly are configured to provide resonant frequencies corresponding to two or more modes of vibrations to be similar to said common frequency of the cyclic forces of said mechanical system, thereby providing vibration attenuation along said two or more modes of vibrations.
Dependencies are inferred from the claim text.