Cryogenic cooling apparatus
US4432216A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1982 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Nov 2, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/17
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A split type cryogenic cooling apparatus comprising a refrigerator which permits a working gas of a high pressure and an operating temperature to generate cold heat, a cryostat accommodating a vessel containing liquefied fraction of the working gas together with an object to be cooled and a plurality of shield plates surrounding the vessel and maintained at respective temperature levels, and a communicating pipe system providing a communication between the refrigerator and the cryostat and having a vacuum heat insulation. Two or more stages of heat exchangers are disposed in the cryostat with their colder ends held in thermal contact with the shield plates and the vessel of temperature levels corresponding thereto, to thereby suppress an introduction of external heat into the cryostat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.