Cryogenic cooler with annular regenerator and clearance seals
US4277948A · kind A · utility
14Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1980 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Jun 27, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2309/003
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A Stirling Cooler with a three stage cold finger. The finger includes a sped displacer in a stepped cylinder. The cylinder is loosely surrounded by an outer shell, with regenerator material in the space between the outer shell and the cylinder. The displacer-cylinder define three swept expansion spaces each communicating with the regenerator space. Clearance seals exist between the displacer and the cylinder because of small diametrical clearance and long axial length with respect to the diametrical clearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.