Vuilleumier refrigerator with separate pneumatically operated cold displacer
US4024727A · kind A · utility
17Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1974 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Mar 1, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02G2250/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The Vuilleumier refrigerator cold free piston type displacer operates on pressure pulses generated by relative heating and cooling of gas to raise and lower the pressure in the entire interconnected system. The cold displacer operates with differential areas against which the line pressure acts, and a pneumatic spring to cause reciprocation of the displacer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.