Cryostat throttle
AssigneeAPD Cryogenics, Inc.
InventorGlenn Bonney
Life of this patent
Estimating the term…
Abstract
The throttling sensitivity of a demand flow cryostat may be controlled and stabilized by selectively exposing refrigerant to the surface of a sensor which actuates a refrigerant throttle valve. The sensor is formed of a plastic material such as high density polyethylene which has a high coefficient of thermal contraction.
Claims19
A cryostat, comprising:
- refrigerant inlet means;
- heat exchanger means for receiving refrigerant from said refrigerant inlet means;
- support means for supporting said heat exchanger on said cryostat;
- a throttle mechanism mounted within said support means;
- valve means including a valve closure means mechanism connected to said throttle mechanism for throttling said refrigerant from said heat exchanger means and seat valve means for throttling said refrigerant from said heat exchanger means, said valve closure means cooperating with said valve seat means;
- and
- at least one access port formed through said support means for allowing said refrigerant throttled through said valve means to flow through said access port and access said throttle mechanism.
A cryostat, comprising:
- refrigerant inlet means;
- heat exchanger means for receiving refrigerant from said refrigerant inlet means;
- support means for supporting said heat exchanger on said cryostat;
- a throttle mechanism comprising a sensor formed of polyethylene and mounted to said support means;
- valve means including a valve closure means connected to said throttle mechanism for throttling said refrigerant from said heat exchanger means and valve seat means connected to said heat exchanger means for throttling said refrigerant from said heat exchanger means, said valve closure means cooperating wit said valve seat means.
A method of controlling the throttling of refrigerant through a temperature actuated cryostat valve which comprises a valve actuator mounted within a support member having at least one refrigerant access port formed therein, and wherein said method comprises releasing said refrigerant through said valve and allowing said refrigerant to flow through said access port and onto said valve actuator.
Dependencies are inferred from the claim text.