Apparatus for reducing noise in a cryocooler such as for magnetic resonance imaging systems
AssigneeOxford Instruments Nanotechnology Tools Limited
InventorsJohn Garside, Matthias Buehler, Dieter Jedamzik
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Abstract
An assembly for operating a cryocooler pedestal is provided. The assembly is operable when in use to provide a cryocooler pedestal with cyclical gaseous connection to high pressure and low pressure gas supply lines, and has a return conduit through which gas is caused to flow from the cryocooler pedestal into the low pressure supply line. The assembly further comprises a dispersion chamber adjacent the return conduit and in flow communication therewith through a plurality of orifices so as to reduce acoustic noise. The assembly has particular application in cooling a Magnetic Resonance Imaging system.
Claims24
An assembly for operating a cryocooler pedestal, the assembly being operable when in use to provide a cryocooler pedestal with cyclical gaseous connection to high pressure and low pressure gas supply lines, the assembly having a return conduit through which gas is caused to flow from the cryocooler pedestal into the low pressure supply line and wherein the assembly further comprises a dispersion chamber adjacent the return conduit and in flow communication therewith through a plurality of orifices so as to reduce acoustic noise.
Dependencies are inferred from the claim text.