Cryogenic refrigerator
US7308797B2 · kind B2 · utility
0Cited by
4References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A cryogenic refrigerator includes a first refrigerant tube and a second refrigerant tube each comprising two tubes that are arranged on a cooling stage substantially parallel to each other and communicate with each other through a gas passage formed in the cooling stage. Phase differences are provided to oscillating gas pressures in the first and second refrigerant tubes, to cancel vibration of the cooling stage. Thus, the cryogenic refrigerator can be provided which can effectively reduce the vibration of the cooling stage caused by the oscillating gas pressure and can reduce the size thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.