Pneumatic refrigeration system and method
US5586440A · kind A · utility
Inventor
Key dates
| Filing date | Dec 6, 1994 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Dec 6, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/004
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In one aspect, the invention comprises a pneumatic refrigeration system having a compressor for generating a pressure increase in an air flow, a system expander downstream of the compressor for reducing the temperature of the air flow and a recycling conduit downstream of the system expander for conducting at least a part of the air flow toward the compressor. In another aspect, the invention comprises a method for cooling a refrigerant including the steps of compressing the refrigerant in a compressor, expanding a first portion of the refrigerant, exchanging heat between the first portion of the refrigerant and a second portion of the refrigerant; and expanding the second portion of the refrigerant. One object of the invention is to provide an efficient pneumatic refrigeration system which contains the air flow to reduce the likelihood of contamination by the refrigerated air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.