Method and apparatus for precooling the helium tank of a cryostat
US5201184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 1991 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | May 29, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2227/0302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method and an apparatus for the precooling of a helium tank of a cryostat, in particular an optical cryostat with optical components in the helium tank, or an NMR cryostat, or a medical NMR cryostat for magnet resonance imaging, which accepts a superconducting magnet coil, a simple and cost effective precooling is achieved in that liquid nitrogen is directed out of a storage container under small overpressure via a conduit through an opening in the helium tank of a cryostat into a heat exchanger arranged in the helium tank and therefrom, by way of an opening, out of the cryostat and, finally, into a collecting container, in particular, into a nitrogen tank surrounding the helium tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.