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Pulse tube cooler having 1/4 wavelength resonator tube instead of reservoirAn improved pulse tube cooler having a resonator tube connected in place of a compliance volume or reservoir. The resonator tube has a length substantially equal to an integer multiple of 1/4 wavelength of an acoustic wave in the working gas within the resonator tube at its operating frequency, temperature and pressure. Preferably, the resonator tube is formed integrally with the inertance tube as a single, integral tube with a length approximately 1/2 of that wavelength. Also preferably, the integral tube is spaced outwardly from and coiled around the connection of the regenerator to the pulse tube at a cold region of the cooler and the turns of the coil are thermally bonded together to improve heat conduction through the coil.
Document ID
20090005212
Acquisition Source
Goddard Space Flight Center
Document Type
Other - Patent
Authors
Gedeon, David R.
Date Acquired
August 24, 2013
Publication Date
October 14, 2008
Subject Category
Engineering (General)
Funding Number(s)
CONTRACT_GRANT: NAS5-02021
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7,434,409
Patent Application
US-Patent-Appl-SN-11/209,984

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