Field integrated pulse tube cryocooler with sada ii compatibility
AssigneeCarleton Life Support Systems, Inc.
InventorsLane Daniel Dicken, Arthur R. Nelson, Dennis Eugene Lund, JR., Daniel James Belk, Mark Russell Squires
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Abstract
A unitary pulse tube expander for removable attachment to a SADA II coldfinger and insertion within a Dewar assembly. The regenerator of the pulse tube expander is encased in a regenerator sleeve and a cold cap to create a unitary pulse tube expander that may function as a drop-in replacement for a Stirling type expander in a SADA II coldfinger cryocooler.
Claims6
A unitary pulse tube expander configured as a drop-in replacement for a Stirling expander in a SADA II coldfinger, said pulse tube expander comprising:
- a) a pulse tube having first and second ends;
- b) a regenerator positioned about said pulse tube;
- c) a regenerator sleeve placed in about said regenerator, said regenerator sleeve having an outer diameter;
- and
- d) a cold cap positioned over said pulse tube second end,
- whereby said regenerator sleeve outer diameter is sized for removable attachment of said pulse tube expander to a SADA II coldfinger.
A method of shipping a pulse tube expander and SADA II coldfinger to a Dewar/sensor manufacturer, said method comprising the steps of:
- a) providing a unitary pulse tube expander having a regenerator sleeve and cold end cap sized to removably attach to a SADA II coldfinger;
- b) removably attaching said unitary pulse tube expander to said SADA II coldfinger and thereby closing the interior of said pulse tube expander off to the ambient;
- c) charging said unitary pulse tube expander and SADA II coldfinger with an inert gas;
- and
- d) shipping said unitary pulse tube expander and said SADA II coldfinger to a Dewar/sensor manufacturer.
Dependencies are inferred from the claim text.