Cryogenic refrigeration apparatus
US5099650A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Apr 26, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A technique for producing a cold environment in a refrigerant system in which input fluid from a compressor at a first temperature is introduced into an input channel of the system and is pre-cooled to a second temperature for supply to one of at least two stages of the system, and to a third temperature for supply to another stage thereof. The temperatures at such stages are reduced to fourth and fifth temperatures below the second and third temperatures, respectively. Fluid at the fourth temperature from the one stage is returned through the input channel to the compressor and fluid at the fifth temperature from the other stage is returned to the compressor through an output channel so that pre-cooling of the input fluid to the one stage occurs by regenerative cooling and counterflow cooling and pre-cooling of the input fluid to the other stage occurs primarily by counterflow cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.