Closed cycle cryogenic cooling apparatus
US4566291A · kind A · utility
17Cited by
27References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1984 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Oct 15, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/912
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A miniaturized high efficiency closed cycle cryogenic cooling system employs an integral electrically-actuated diaphragm compressor and expander arranged to enable the work of expansion of a portion of compressed gas to be applied to the compressor via a fluid coupling to reduce the external input power requirements of the compressor. Another portion of compressed gas is expanded through an expansion valve and liquefied at the cryogenic temperature. The expanded gas from the expander and the expansion valve is returned to the compressor through a heat exchanger to pre cool the portions of compressed gas prior to expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.