发明名称 |
Fast response Joule-Thomson cryostat |
摘要 |
<p>A cryostat (10') with a heat exchanger (13'); a valve (25') for controlling the flow of fluid through said heat exchanger (13'); and a snap disk (30') for actuating the valve (25'). In a specific embodiment, the snap disk (30') is constructed of at least two different materials (32', 34') , each having a different coefficient of thermal expansion. The snap disk (30') is mounted upon an orifice block (38') and coupled to a needle valve (25') by a connecting rod (40'). The needle valve (25') engages an orifice (16') in the orifice block (38'). The orifice (16') is in communication with the tubing (14') of a heat exchanger (13') via a channel (44') in the orifice block (38'). The geometry of the snap disk (30') is such that when the disk changes state, it snaps due to the thermal properties thereof. This ensures fast response with abrupt closure characteristics and considerable travel. In addition, the snap disk (30') allows for a simplified cryostat design with minimal weight and cost. <IMAGE></p> |
申请公布号 |
EP0825395(B1) |
申请公布日期 |
2002.09.25 |
申请号 |
EP19970306359 |
申请日期 |
1997.08.20 |
申请人 |
RAYTHEON COMPANY |
发明人 |
BUELOW, PAUL L.;SKERTIC, MATTHEW M.;RYBA, ERIC L. |
分类号 |
F17C13/00;F25B9/02;G05D23/10;(IPC1-7):F25B9/02;F25B41/06 |
主分类号 |
F17C13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|