| Abstract: A freeze-thaw valve and a method of micro-machining the freeze-thaw valve
is provided and includes a valve housing, wherein the valve housing
defines a housing cavity and includes a housing inlet, a housing vent, a
capillary tubing inlet and a capillary tubing outlet. A valve body is
provided, at least a portion of which is lithographically constructed,
wherein the valve body includes a refrigerant inlet, a refrigerant outlet
and an expansion chamber. The expansion chamber is disposed to
communicate the refrigerant inlet with the refrigerant outlet and
includes a restriction region having a flow restriction. Additionally,
the valve body is disposed within the housing cavity to form an
insulating channel between the valve housing and the valve body. |
| Filed: 9/15/2004 |
| Application Number: 10/941216 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Attribution for Derwent World Patents Index Records published on Sandia ® Clarivate. All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |